Title of Invention: Gastric obstruction device deployment assembly and methods of delivering and deploying a gastric obstruction device Abstract: The present invention relates to gastric obstruction device deployment systems and a device for intermittently obstructing a bodily opening, such as a gastric opening, and includes a proximal occluding member connected to a distal occluding member by a tether. The proximal occluding member is formable from an elongated and narrower configuration to a contracted or expanded but wider configuration. When employed in the stomach, the gastric obstruction device may be arranged transluminally with the distal occluding member disposed in the duodenum and the proximal occluding member disposed against the pyloric valve, intermittently occluding the pyloric valve and preventing or delaying the flow of gastric contents through the pyloric valve. Detailed Description: Part general_description_paragraphs: Part CROSS-REFERENCE TO RELATED APPLICATIONS: This application claims the benefit of priority to U.S. Provisional Application No. 62/449,511 filed Jan. 23, 2017, which is incorporated herein by reference in its entirety. Part TECHNICAL FIELD: The present invention relates to a gastro-intestinal device deployment system for delivering, deploying, reconfiguring, and releasing a gastric obstruction device for treating obesity and other medical conditions. More particularly, the gastric obstruction device can be a device that is positioned transluminally in a patient's gastro-intestinal tract to intermittently obstruct or reduce the flow of gastric contents and deployment systems for delivering, reconfiguring, and releasing such intermittently obstructive devices. Part BACKGROUND: Obesity is a condition of epidemic proportions in the United States. Recent government studies have indicated that up to 40% of Americans are obese and that, among those, almost 20% are morbidly obese. Patients who are obese are tend to suffer from cardiovascular disease, heart disease, stroke, diabetes, and obstructive sleep apnea. Recent studies have indicated that obesity can reduce a person's lifespan by an average of three years in adults and twenty years in children. Many attempts have been made in the prior art to provide medications, devices, and surgical procedures for the treatment of obesity, all of which either have serious side effects or are basically ineffective. For example, various diets, supplements and pharmaceuticals have been developed and marketed, but none have shown any significant benefits to date in the treatment of obesity with the exception of some pharmaceuticals, which have unfortunately been found to cause a number of serious, life-threatening medical conditions. To date, there are no commercially available supplements or drugs that have been proven to be effective in promoting significant weight loss and at the same time that are free from serious collateral side effects. Recognizing that no cure has been developed to date that is both effective and safe, the medical industry has introduced more extreme procedures, an example of which is the Roux-En-Y gastric bypass. This extensive and invasive surgery is highly effective but is also potentially lethal, with a 1-2% mortality rate, a six month recovery period, and a cost of tens of thousands of dollars, yet it is becoming increasingly popular because other available treatments do not produce the desired results. Gastric reduction, or simply removing a large segment of the stomach, is another procedure that is similar to gastric bypass and that, like gastric bypass, has also been associated with potentially lethal complications. Data from recent studies have indicated that even in the lowest risk groups, obesity surgery causes an average one-year mortality rate of nearly 5%. In another attempt to treat obesity, devices have also been developed in the prior art that are aimed at providing a sense of fullness to a patient, so to cause the patient to reduce food intake. Such devices may be configured as stents that support the stomach or the pyloric valve or that may be configured as permanent occluders. Unfortunately, these devices are implanted in the patient on an essentially permanent basis and typically include complex mechanical or electrical features that may stop working properly over time or that may require maintenance from time to time. Examples of such devices in the prior art can be found in U.S. Pat. Nos. 5,509,888; 6,067,991; 6,527,701; 6,689,046; 7,011,621; 7,037,344; 7,120,498; 7,122,058 and 7,167,750, and in U.S. Patent Application Publications Nos. 2004/0172142; 2005/0273060; 2007/0016262; 2007/0027548; and 2007/0083224. Evidence has been developed showing that benefits can be derived from reducing gastroduodenal flow. In unpublished, but recently presented data at the American Society for Bariatric Surgery conference of June 2003, stimulation of the gastric vagus nerve with subsequent reduction in gastric motility resulted in a loss of over 20% of excess weight over a nine-month period. Furthermore, there is data suggesting that gastric vagotomy is also effective in the treatment of obesity through a similar mechanism. Unfortunately, these therapies require highly invasive, sometimes irreversible, surgical procedures, making them undesirable for a large segment of the obese population. Part SUMMARY: Disclosed is a gastro-intestinal device deployment system for delivering, deploying, reconfiguring, and releasing a gastric obstruction device for treating obesity and other medical conditions. It is also an object of the present invention to provide a device for the treatment of obesity and related conditions that is well tolerated by the stomach and in general, by the gastro-intestinal tract. It is a further object of the present invention to provide a device for the treatment of obesity and related conditions that can be implanted and removed with medical procedures that are safe and relatively simple to perform. The delivery and deployment assembly for delivering and deploying an intermittently obstructive gastric obstruction device can comprise a delivery tube having a lumen there through and a distal opening; a control tube slidably positioned through the delivery tube; a control assembly attached at a proximal end of the delivery tube; one or more tension lines extending through the control assembly and through the delivery tube; a tensioning mechanism within the control assembly and in communication with each of the one or more tension lines for maintaining the tension lines under tension; and an advancement control positioned along the control assembly and operatively coupled to the control tube. The tensioning mechanism can be configured to release the one or more tension lines to release the tension. The assembly can further comprise a mechanism for cutting or releasing the one or more tension lines. The gastric obstruction device can be positioned within the lumen of the delivery tube while in an elongated and collapsed configuration. A compliant pyloric contact section of the gastric obstruction device can be coupled to a distal end of the control tube. The one or more tension lines extending through the delivery tube can further extend through the gastric obstruction device when at least part of the gastric obstruction device is within the delivery tube. In addition, an anchor line can be positioned through the control assembly and can pass through the gastric obstruction device. The delivery and deployment assembly can include a control interface along the control assembly. The control interface can have one or more actuation mechanisms coupled to a corresponding tension line for further applying a tensile force to the corresponding tension line. The control tube can be configured to slidably advance to a distal position where the control tube decouples from the advancement control. The control tube can extend at least partially within the control assembly. The delivery and deployment assembly can further include a plunger slidably translatable within the delivery tube and extending from the control assembly and into the delivery tube to push the gastric obstruction device out of the delivery tube. The plunger can define one or more projections or depressions along a length of the plunger for engagement with the advancement control. The delivery and deployment assembly can also comprise a first carriage slidably positioned through the control assembly, the first carriage being attached to a proximal end of the control tube and further comprising a plunger release mechanism which releases the plunger from the carriage when actuated. The assembly can also comprise a pressure indicator in fluid communication with the delivery tube. In addition, the assembly can also comprise a pressure regulator or mechanism in communication with the pressure indicator and a port in fluid communication with the delivery tube. The assembly can also comprise one or more wire access handles positioned along the control assembly, wherein the one or more tension lines pass through a corresponding shaft of the wire access handle. The assembly can further comprise a flange extending from a distal end of the delivery tube. The assembly can also comprise a device cover attached to the flange. The assembly can further comprise an access sheath slidably positionable over the delivery tube. The assembly can also comprise an inflatable member positioned at or near a distal end of the access sheath. A method of delivering and deploying an intermittently obstructive gastric obstruction device is also disclosed. The method involves advancing a delivery tube distal end per-orally into proximity of a stomach of a patient; advancing a control tube slidably positioned through the delivery tube, wherein a conforming portion of the gastric obstruction device positioned within the delivery tube is released from the delivery tube by the control tube; advancing the gastric obstruction device while maintaining a position of the control tube relative to the delivery tube distal end such that the gastric obstruction device is advanced distally of the delivery tube distal end and nests into a compacted configuration; tightening one or more lock lines passing through the gastric obstruction device in its compacted configuration until a corresponding tensioning wire pin is locked to maintain the compacted configuration; and releasing the gastric obstruction device from the delivery tube. Another method of delivering and deploying an intermittently obstructive gastric obstruction device comprises advancing a delivery tube distal end per-orally into proximity of a stomach of a patient; advancing a control tube slidably positioned through the delivery tube such that a distal portion of the gastric obstruction device is released from the delivery tube; maintaining a position of the control tube relative to the delivery tube distal end such that the gastric obstruction device is advanced distally of the delivery tube distal end and nests into a compacted configuration whereby the gastric obstruction device is formed from its distal end and towards its proximal end into its deployed configuration; and tightening one or more lock lines passing through the gastric obstruction device in its compacted configuration until a corresponding tensioning wire pin is locked to maintain the compacted configuration. In one variation, advancing a delivery tube further comprises advancing a delivery tube having a device cover attached to the distal end. The gastric obstruction device can be advanced distally of the delivery tube and into an interior of the device cover. Advancing a control tube further comprises actuating an advancement control on a control assembly attached to the delivery tube. In addition, advancing the gastric obstruction device comprises advancing a plunger through the delivery tube to push the gastric obstruction device. Furthermore, advancing the plunger comprises releasing the plunger via a release mechanism from a first carriage slidably positioned within the control assembly. Tightening the one or more lock lines further comprises actuating a tension control positioned along the control assembly to apply tension to one or more tension lines coupled to the lock lines. The method further involves cutting or releasing the one or more tension lines. In addition, releasing the gastric obstruction device comprises releasing an anchor line from the gastric obstruction device. Moreover, releasing the anchor line from the gastric obstruction device is done via the control assembly. The method further comprises insufflating the stomach prior to advancing a control tube. The method also comprises monitoring a pressure within the stomach. The method further comprises visualizing the gastric obstruction device while advancing a control tube. The method further comprises inserting the delivery tube into an access sheath prior to advancing a delivery tube. The method further comprises inflating an expandable member near or at a distal end of the access sheath within the stomach of the patient. The method further comprises retracting the expandable member against a lower esophageal sphincter of the stomach of the patient. The method further comprises removing the delivery tube from the stomach of the patient to finish the delivery and deployment procedure. Another method of delivering and deploying an intermittently obstructive gastric obstruction device is disclosed, the method comprising advancing an access sheath per-orally into proximity of a patient stomach, wherein an obturator is coupled to the access sheath during introduction into the patient stomach; removing the obturator from the access sheath when a distal end of the access sheath is in the patient stomach; inflating an expandable member on the distal end of the access sheath in the patient stomach; and advancing the gastric obstruction device through the proximal end of the access sheath into the patient stomach at the distal end of the access sheath. The access sheath can be coupled to the obturator. The method can further involve advancing an endoscope through the access sheath. The method can also involve deflating the expandable member. The gastric obstruction device of the present invention operates as a transluminal device that obstructs the pylorus or another organ on an intermittent basis and that causes a reduced flow of gastric contents into the intestinal tract. The device of the present invention may just occupy space in the stomach and occlude the pyloric valve from time to time, or also may partially obstruct the duodenum or the small intestine, reducing overall gastrointestinal transit. The intermittent blockage of the gastrointestinal tract results in weight loss and also in an increased or sustained feeling of fullness by the patient. The device of the present invention can be placed and removed with simple endoscopic procedures and is completely reversible. In particular, the device of the present invention can be inserted and removed orally, nasally or transcutaneously and, in certain embodiments, can be triggered externally or can be caused to expand or can self-expand once in the gastrointestinal space. In some variations, a gastric obstruction device includes a proximal occluding member oriented in the direction of the stomach after implantation and a distal occluding member oriented in the direction of the duodenum after implantation that are connected by a tether. The proximal occluding member is composed of a coiled member surrounded by an apron cover. The coiled member is formable from an elongated, narrower configuration to a contracted, wider configuration, while the apron cover has an essentially cylindrical portion that surrounds the coiled member and an essentially conical portion that connects the apron cover to the tether, providing the apron cover with a funnel-like shape. In one embodiment, the cylindrical portion is spaced from the coiled member by an interstice or gap, and the cylindrical and conical portions may have different wall thickness. The coiled member may be formable from a narrower elongated configuration to a wider configuration by compressing the coiled member. In one embodiment, the elongated configuration exhibits a helical contour with a plurality of turns, and the wider configuration is formed from the helical configuration by nesting the turns one adjacent to the other to provide a bulbous body. The wider configuration is then locked in place by engaging a connecting member at the proximal end of the coiled member with a mating cavity at the distal end of the coiled member. This may be achieved by having a clinician pull on a string coupled to the connecting member in the direction of the mating cavity. In one embodiment, such coupling string extends outside of the device along its entire length and then enters a lumen running from the coiled member to the distal occluding member through the tether. When entering the coiled member, the string is looped through the connecting member and is removable from the device after the connecting member has engaged the matching cavity. The proximal end of the coiled member may be reinforced to increase its resistance to tearing during the compression of the coiled member by including a reinforcing material in at least part of the structure of the proximal end. The transformation process from the elongated configuration to the wider configuration is reversible, so that the device can be implanted in the stomach in the elongated configuration, reside in the stomach and/or gastro-intestinal tract in the wider configuration, and be removed from the stomach through the esophagus in the elongated configuration. In one embodiment, the wider configuration reverses to the elongated configuration by severing the connecting member from the proximal end, for example, by having a clinician cut a string coupling the connecting member to the proximal end or to a release member in the proximal end. A device according to the present material is manufactured from a material that is biocompatible, that is able to withstand the gastrointestinal environment, and that prevents or anyways minimizes abrasion of the walls of the stomach and duodenum, particularly of the pyloric valve. In one embodiment, the device is manufactured from a resilient plastic material, for example, from a silicone material, and the apron cover may be constructed to be flexible enough to reverse from a position surrounding a portion of the tether to a position surrounding the coiled member, in order to facilitate insertion in the stomach according to one method of use. The distal occluding member also may have a bulbous shape (e.g., a pod or ellipsoid shape) and include an insert having a heavier weight than the remainder of the distal occluding member, so to facilitate disposition and retention in the duodenum. The device of the present invention is suited not only for the treatment of obesity, but also for treating other ailments, such as improper glucose tolerance in a diabetic or prediabetic subject and the progression of diabetes itself by inhibiting fasting insulin secretion or glucose-stimulated insulin secretion. The resent device is also suited for treating other ailments deriving from obesity, including hyperphagia, dyslipidemia, Prader Willi syndrome, Froelich's syndrome, Cohen syndrome, Summit syndrome, Alstrom syndrome, Borjesen syndrome, Bardet-Biedl syndrome, or hyperlipoproteinemia, types I, II, III, and IV. The device of the present invention may also include sensors or transmitters to provide feedback and other data to an intra-corporeal or extra-corporeal processor, or may carry one or more compounds stored in a reservoir within the device or coated on the device. In one embodiment, insulin is released into the gastro-intestinal tract by disposing an insulin reservoir in the distal occluding member of the device. Such a release of insulin may be controlled by the size of the orifice between the reservoir and the outer environment, or by a time-controlled actuator, or by an actuator controlled by one or more sensors, for example in response to detection of sugar in the gastro-intestinal tract. Additionally, alternative devices and their methods of use which may be used with the features described herein in various combinations are further described in detail in U.S. patent applicatin Ser. No. 12/205,403 filed Sep. 5, 2008 (US Pub. 2009/0198210); U.S. patent application 12/352,497 filed Jan. 12, 2009 (US Pub. 2009/0182357); and U.S. patent application Ser. No. 12/352,508 filed Jan. 12, 2009 (US Pub. 2009/0182358), each of which is incorporated herein by reference in its entirety for any purpose. Furthermore, assemblies and systems for delivering and deploying these obstructive devices may also be used to deliver the devices in a collapsed, uncoiled, and elongated configuration. Once in position within the patient's body (e.g., advancing a delivery tube distal end per-orally into proximity of a patient's stomach), an advancement control on a control assembly may be used to advance the collapsed and uncoiled proximal occluding member via a control tube into the stomach. A plunger may be optionally used to further advance (e.g., by pushing) the proximal occluding member such that it is pushed out of a delivery tube into its coiled and nested configuration external to the delivery tube while a distal portion of the proximal occluding member is maintained at a distance from the delivery tube. Variations of the obstructing device and its methods of use are further described in detail in U.S. App. 61/791,433, filed Mar. 15, 2013, which is incorporated herein by reference in its entirety for any purpose. With the proximal occluding member reconfigured in its coiled and compacted configuration, one or more lock lines may be tightened through the proximal occluding member via a corresponding tension control interface including tension lines coupled to the lock lines until the proximal occluding member is locked in its deployment configuration. While the lock lines are passed through the proximal occluding member and are used to reconfigure and lock the obstructing device into its deployed configuration, the tension lines may be separate from the lock lines and may also correspond to each of the lock lines and may extend from the gastric obstruction device and through the control assembly. Moreover, the tension lines may lead either to the proximal end of the coiled member (in which case the entire coiled member may be delivered into the stomach before reconfiguration) or the tension lines may lead through the middle of the coiled member and then outward in a retrograde fashion through the walls of the coiled member which enables reconfiguration of the coiled member as it emerges from the delivery tube in a much more controlled process. In another variation, the tension lines can be coupled to lock lines which are used to lock the gastric obstruction device in its compressed, wound, and nested configuration. The tension lines can be used to pull the gastric obstruction device through the delivery tube and out of the delivery tube into a device cover or skin. The tension lines can extend from the delivery assembly, through the turns of the coiled member of the gastric obstruction device, and back into the delivery assembly through a lumen of a control tube. The tension lines can be detached or otherwise separated from the lock lines. The tension lines can then be cut and removed from the gastric obstruction device (e.g., through the control tube) when the gastric obstruction device is locked by the locked lines in the nested or wound configuration. The tension lines coupling the gastric obstruction device to the delivery assembly may have any tension released prior to being cut. Additionally, an anchor line coupling the obstructing device to the control assembly may also be released and removed from the control assembly and the gastric obstruction device to finally deploy the gastric obstruction device into the patient's stomach. Part DETAILED DESCRIPTION: Detailed descriptions of embodiments of the invention are provided herein. It is to be understood, however, that the present invention may be embodied in various forms. Therefore, the specific details disclosed herein are not to be interpreted as limiting, but rather as a representative basis for teaching one skilled in the art how to employ the present invention in virtually any detailed system, structure, or manner. FIG. 1A depicts one variation of a gastric obstruction device 30, which is configured for insertion into a patient's organ, typically the stomach. The gastric obstruction device 30 includes a proximal occluding member 32 and a distal occluding member 34, which are connected one to the other by a tether 36. The relative sizes of proximal occluding member 32 and of distal occluding member 34 are such that, after insertion into the stomach of a patient, the natural contractions of the stomach and, in general, the movements of the patient induce distal occluding member 34 to enter the pyloric part of the gastro-intestinal tract and the duodenum, while proximal occluding member 32 is retained in the stomach and cannot move beyond the pyloric valve because its diameter is larger than the pyloric valve opening. More particularly, proximal occluding member 32 includes a coiled member 38, disposed in a central position within an apron cover 40. Coiled member 38 may be formed from an elongated, narrower configuration as shown in FIG. 1A to a contracted, wider configuration as shown in FIG. 1B. In the embodiment illustrated in FIG. 1A, coiled member 38 has a helical design with a plurality of turns 42, which are configured to nest one adjacent to the other to assume the compact, bulbous shape illustrated in FIG. 1B. Apron cover 40 wraps around coiled member 38, providing proximal occluding member 32 with an enlarged diameter and preventing the passage of proximal occluding member 32 through the pyloric valve. In one variant of the present embodiment, apron cover 40 includes an essentially cylindrical proximal portion 44 connected to an essentially conical distal portion 46 that extends from tether 36 to proximal portion 44. This configuration of apron cover 40 is designed to provide an intermittent plugging effect on the pyloric valve and to avoid or anyways minimize abrasive contact with the wall of the pyloric valve during such plugging effect, so to prevent or minimize patient discomfort and irritations or even lacerations to the mucosa of the stomach and, in general, to the gastro-intestinal tract. Distal portion 46 may have a smaller wall thickness than proximal portion 44, both providing a gentler or softer contact with the pyloric valve, and also facilitating the reversal of apron cover 44 during insertion into a patient's stomach from a position substantially aligned with tether 36 to the position that wraps around coiled member 38, as explained in greater detail below. In different variants of the present embodiment, apron cover 40 may extend proximally for various lengths, surrounding coiled member 38 partially or completely. Further, in different variants of the present embodiment, apron cover 40 may be spaced from coiled member 38 at various distances to create an interstice 48 of different amplitudes between coiled member 38 and apron cover 40. Distal occluding member 34 may exhibit a variety of contours and in general, is shaped to facilitate its transition out of the stomach and into the duodenum, and to avoid or minimize abrasive contact with the walls of the stomach and of the pylorus. In one variation, the distal occluding member 34 has a bulbous or ellipsoid shape, essentially formed by two rounded, frusto-conical portions 50 connected at their wider bases. The gastric obstruction device 30 may be manufactured from a variety of materials, for example, from a resilient plastic such as a silicone or urethane plastic, which may be reinforced in selected portions. In general, the selected material should be biocompatible, resistant to the stomach environment, for example to stomach acids, and soft to the contact with the stomach and duodenal walls. The desired material should also provide the gastric obstruction device 30 with the desired shape while retaining sufficient flexibility for the insertion process in the stomach, for later reverting to the desired position within the gastro-intestinal tract, and for adapting to the various movements of the stomach and, in general, of the body of the patient. Inserts may be integrally included within the body of the gastric obstruction device 30 to increase certain mechanical properties in certain areas. For example, an insert (such as a metallic cylinder) may be embedded within distal occluding member 34 to increase weight and to facilitate retention by gravity within the pylorus. Another insert (such as a fabric piece) may also be embedded in proximal end 52 of coiled member 38, increasing resistance to tear when proximal end 52 is pulled outwards to extend coiled member 38 to the configuration of FIG. 1, or inwards to stabilize coiled member 38 in its contracted, wider configuration, as explained in greater detail below. The insertion of the gastric obstruction device 30 in a patient's stomach will now be described with reference to FIG. 1C. It should be noted that FIG. 1C illustrates, among other things, one variant of the embodiment of FIGS. 1A and 1B, in which a stabilizing cap 54 is added to maintain coiled member 38 in the contracted, wider configuration, and also to increase bulk and to prevent the introduction of food or other gastric products within interstice 48. In one method of use, the gastric obstruction device 30 is introduced in a patient's stomach in the elongated, narrower configuration of FIG. 1A, with apron cover 40 oriented in the opposite direction to that shown in FIG. 1A, that is, to cover tether 36 while the free end of distal portion 46 is oriented proximally, in the direction of distal occluding member 34. When in this configuration, the gastric obstruction device 30 is disposed within a tube (not shown) and is caused to exit the tube with proximal end 52 first, followed by the rest of the gastric obstruction device 30. When the gastric obstruction device 30 has partially exited the tube (or alternatively, the tube has been retracted from the gastric obstruction device 30) so to leave apron cover 40 outside of the tube, the gastric obstruction device 30 is pulled inside the tube, but because apron cover 40 surrounds and wraps around the end of the tube, such a pulling of the gastric obstruction device 30 inwards into the tube, causing apron cover 40 to flip over and change orientation, so to wrap around coiled member 38. After such a flipping around of apron cover 40 has been achieved, the gastric obstruction device 30 is completely ejected from the tube and becomes disposed in the stomach. Alternatively, the gastric obstruction device 30 may be introduced into a patient's stomach with apron cover 40 already oriented proximally, making unnecessary the previously described flipping operation. While the configuration of coiled member 38 makes it recoil and assume the contracted configuration, similar to that shown in FIG. 1B, the fully contracted, wider configuration of coiled member 38 is achieved and maintained as follows. A connecting member 56 is coupled (for example, by a first string) to a release member 58. A second string 60 is looped around the gastric obstruction device 30, running outside and along the gastric obstruction device 30 starting from a first free end, and then extending within connecting member 56 through lumen 66, and then (within a lumen or a tube) within turns 42, successively entering a lumen 62 in tether 36 and distal occluding member 34 (see also FIGS. 1D and 1E), and eventually exiting the gastric obstruction device 30 with a second free end. After the gastric obstruction device 30 has been introduced in the stomach, a clinician can hold both ends of second string 60 and, by pulling on second string 60 while the gastric obstruction device 30 is constrained within the stomach, the clinician causes connecting member 56 to travel in the direction of mating cavity 64, shaped so to constrain connecting member 56 (for example, by interference fit) and to prevent connecting member 56 from being released. Therefore, coiled member 38 is locked into its contracted, wider condition on a permanent basis. After the gastric obstruction device 30 has been shaped as described, second string 60 is removed by pulling on one free end and by having second string 60 slide through one or more lumens within the gastric obstruction device 30, eventually exiting the gastric obstruction device 30 entirely. The gastric obstruction device 30 is now free to move freely within the stomach, and the natural contractions of the stomach, in addition to any other movements of the patient's body, cause distal occluding member 34 to move into the pylorus, while the size of proximal occluding member 32 prevents it from moving into the pylorus and forces it to reside in the stomach. Therefore, distal occluding member 34 will eventually be disposed in the pylorus, and any inserts of a heavier weight will facilitate retention of distal occluding member 34 in the pylorus, while proximal occluding member 32 will act as an intermittent plug against the pyloric valve, because stomach contractions and other body movements will cause proximal occluding member 32 to move towards and away from the pyloric valve, acting as an intermittent plug and allowing the passage of some food from time to time. Another variation of a gastric obstruction device 31 is illustrated in the cross-sectional side view of FIG. 2A and the top and bottom end views, respectively, of FIGS. 2B and 2C. In this variation, the gastric obstruction device 31 may also include a distal occluding member 33 connected or attached via tether 35 to a proximal occluding member 37. As described above, proximal occluding member 37 may comprise an apron cover 39 which defines a curved or otherwise arcuate surface which tapers radially from tether 35 at a distal portion 41 (which typically contacts the stomach interior surface when in use) to a curved proximal portion 43 which has a relatively larger diameter and which may define a circumferential lip or edge 53 which is atraumatic to surrounding tissue. Apron cover 39 may define a channel or interstice 45 within which coiled member 47 may reside when coiled member 47 is in its contracted deployment configuration, as illustrated. With coiled member 47 contracted, apron cover 39 may be configured to entirely or at least partially encircle or enclose coiled member 47, as illustrated in FIGS. 2D and 2E which respectively show side and cross-sectional perspective views. Moreover, interstice 47 may be left open when in use in the patient body or an additional cap member or cover may be optionally attached to fully enclose apron cover 39 and coiled member 47 within, if so desired. Coiled member 47 may be formed into a nested or wound structure having a plurality of turns and a distal end which is detachably coupled to the rest of the gastric obstruction device 31 at connecting portion 49. Because of its coiled or wound helical structure, the coiled member 47 may be extended in a low-profile configuration, as above, for delivery into the patient body and then allowed to compress or contract into its coiled structure which forms a diameter or cross-sectional area which is relatively larger than a diameter of distal occluding member 33 to inhibit or prevent the passage of proximal occluding member 37 through the pylorus when in use. As in the aforementioned embodiment, the coiled member 47 may be biased or configured to self-contract. Alternatively, a string member or other locking mechanism, as described herein, may be actuated to compress and/or lock the structure such that the expanded configuration is maintained and prevented from releasing and reconfiguring back into its low-profile configuration. Distal occluding member 33 may further define a lumen or channel 51 to facilitate the placement and/or positioning of the gastric obstruction device 31 within the patient body. In yet another embodiment, the coiled member 47 may be fabricated as a separate component and attached or coupled within the apron cover 39 at a later time rather than forming the coiled member 47 as a continuous integral component. This particular embodiment allows for the size and shape of the proximal occluding member 37 to be varied and altered according to any patient-specific parameters and attached within a common apron cover. FIG. 3A illustrates a variation of a coiled member 61 (for example, any of coiled member 38 or 47) compressed into a wound or nested structure. The coiled member 61 can be formed in the wound or nested structure when deployed within a patient's stomach. FIG. 3B illustrates that the wound coiled member 61 can define a channel 65 and a receiving portion 63 when in its wound or nested configuration. As previously described, coiled member 61 may be advanced into the patient body in an extended low-profile elongated configuration and then collapsed into its expanded and optionally locked wound or nested configuration, either via actuation or by allowing for self-reconfiguration. Because the coiled member 61 may form a receiving portion 63 in its collapsed configuration, portion 63 may be coupled to a complementary securement mechanism positioned within apron cover 39. In this example, the securement mechanism may be comprised of a connecting portion 55 which extends distally within apron cover 39. Connecting portion 55 may have a securement member 57, such as a tapered portion, and a stop member 59 which each limit the movement of portion 63 relative to connecting portion 55. As illustrated in the cross-sectional side view of FIG. 3C, coiled member 61 is shown in its nested and locked configuration while secured within interstice 45 and encircled by apron cover 39. As shown, securement member 57 may be advanced at least partially within channel 65 formed by the wound or partially wound or nested coiled member 61 to prevent the relative movement or release of coiled member 61 from connecting portion 55. The connecting portion 55 is illustrated as an example and is not intended to be limiting. Other known securement mechanisms may be utilized as practicable. In these and other embodiments described herein, because the gastric obstruction device 31 may be introduced into the patient body in a minimally invasive manner, e.g., per-orally and through the esophagus into the patient's stomach, the gastric obstruction device 31 may be delivered in its low-profile configuration, e.g., where the coiled member 61 is in its uncoiled or unwound elongate configuration. Alternatively, the gastric obstruction device 31 may be delivered in a partially locked configuration. Once within the stomach, for instance, the gastric obstruction device 31 may be coiled or wound into its deployment configuration and the coiled member 61 may be affirmatively locked into position relative to the gastric obstruction device 31 such that its enlarged profile inhibits or prevents the passage of the gastric obstruction device 31 through the pylorus. In ensuring that the coiled member 61 is locked into its expanded configuration, various mechanisms may be utilized to confirm its securement. One example includes having the string for locking the coiled member 61 be color-coded such that one portion of the string is of a different color (e.g., red) than the remainder of the string. As the string is tensioned to lock the coiled member 61, once the color-coded portion is exposed from the gastric obstruction device 31 the user may visually confirm that the coiled member 61 is locked into its deployment configuration. Alternatively, the amount of tension required to lock the gastric obstruction device 31 may be calibrated to increase to a preset level once the gastric obstruction device 31 is locked such that the user may confirm by tactile feedback that the gastric obstruction device 31 is indeed locked. Other alternative mechanisms for locking confirmation or detection of the gastric obstruction device 31 may additionally include sensors incorporated within the gastric obstruction device 31. An example is illustrated in the cross-sectional side view of FIG. 1F, which shows sensor 67 positioned within the gastric obstruction device 31. Sensor 67 may incorporate any number of detection modalities, e.g., acoustic, ultrasonic, electrical, electromagnetic, optical (for instance, detecting changes in color, wavelength, frequency, etc.), chemical, etc. which may sense changes in the coiled member 61 from its nested or compacted deployment configuration or changes in the string tension, connecting member 56, or release member 58. FIGS. 4A and 4B are perspective views of another variation of a gastric obstruction device 70 having a proximal occluding member 72 with a helical assembly reconfigurable from an elongated configuration into an enlarged, coiled, and nested configuration. The tether 74 may be seen extending from a compliant pyloric contact section 78 near a distal end of the proximal occluding member 72 and a distal occluding member 76 attached at a distal end of the tether 74. The compliant pyloric contact section 78 may be provided with a variable stiffness to be more benign to the contacted tissue (e.g., the pyloric valve and tissue surrounding the pyloric valve) and to further prevent trauma to the surrounding tissue. The compliant pyloric contact section 78 can be substantially conical-shaped, frusto-conical shaped, or tapered to converge or narrow in the direction of the distal occluding member 76. In this and any of the variations herein, various coatings may be applied to the gastric obstruction device 70, for example, for coefficient of friction, lubricity, enhanced biochemical durability, anti-microbial performance, etc. FIG. 4B shows a cross-sectional side view of the coiled and locked gastric obstruction device 70 which in this variation illustrates the elongate coiled member 80 having a contoured profile 84. The profile 84 may define a projecting portion which may form a contact interface 82 when coiled into its nesting configuration with the adjacent coil although reversed contours may also be used to prevent the inward displacement of the nested loops. The contoured profile 84 may also enhance alignment of the structure during deployment as well. Furthermore, the edges of the coiled member 80 may also be radiused to reduce exposure of any edges to the gastric tissue. Once nested, the coiled member 80 may form a compacted shape which may form an enclosed space 88 within and which may be configured into a spherically-shaped structure, as shown. To maintain its compacted configuration, a central column 86 may extend through the center of the proximal occluding member 72 to lock the shape of the member 72. The central column 86 may be formed in part by a distal hub 90 which may be anchored or attached at a distal end of the proximal occluding member 72 and also optionally attached to the hub where the tether 74 is attached to the proximal occluding member 72. A proximal plug 94 may be seated 96 at a proximal end of the coiled member 80 and extend into a coupled attachment to the distal hub 90 which may be connected via, e.g., a collar 92 such as a directional C-clip, etc. Optionally, a reinforcing member 98 such as a wire or suture length may be coupled to the distal hub 90 and extend through the tether 74 into attachment with the distal occluding member 76. Additionally, a distal weight 100 may also be optionally integrated in the distal occluding member 76 as well. The inclusion of a reinforcing member 98 may prevent the over-extension of the tether 74 during deployment and use. The member 98 may also function to prevent the detachment of the tether 74 or distal occluding member 76 in the unlikely event that the tether 74 fails. FIGS. 5A and 5B show cross-sectional side and perspective views of the proximal occluding member 72 to illustrate detail features for locking the proximal occluding member 72 into its enlarged and compacted configuration. As shown, the proximal plug 94 may include a release mechanism 110 which extends through a proximal end of the plug 94 and is secured via one or more release securement members 112 within the plug 94. The release mechanism 110 may be toggled proximally and distally relative to the plug 94 to selectively lock or unlock one or more tensioning wires which extend transversely through the coiled member 80. Moreover, the release mechanism 110 may be formed to have a rigid lip to facilitate its grasping by endoscopic tools when locking or unlocking the mechanism 110. Optionally, the release mechanism 110 may also integrated a valve, such as a duck-billed valve, to prevent solid matter from entering the internal space of the proximal occluding member 72. The collar 92 may also be seen coupling the distal hub 90 and the proximal plug 94 to one another. As the coiled member 80 configures into the enlarged configuration, the plug 94 may come into a mating engagement with the distal hub 90 which may then be joined by the collar 92 housed around the proximal plug 94. To facilitate compression or translation of the coiled member 80 into its compacted configuration and to lock its enlarged configuration in a secure manner, one or more tension lines 226 (see FIG. 14), lock lines, or a combination thereof may extend through the coiled member 80 in a transverse direction. The tension lines 226 (see FIG. 14), lock lines, or a combination thereof may be formed of various wires, strings, or other high-strength force fibers. The terminal end of the coiled member 80 may integrate one or more tensioning wire pins 114, 116, as shown in FIG. 5A, to which one or more corresponding collets 120, 122, 124 are attached and which also have corresponding lock lines 126, 128, 130 extending from their respective pins. The lock lines 126, 128, 130 may be located uniformly about the circumference of the proximal occluding member 72 and extend transversely through respective lumens defined through the coiled member 80, as shown in FIG. 5B. Although three lock lines are shown, this is done for illustrative purposes and any number of lock lines may be utilized at uniform (e.g., four lock lines positioned at 90 degrees relative to one another about a circumference of the proximal occluding member 72) or arbitrary locations around the proximal occluding member 72. Moreover, multiple lock lines may further provide for locking redundancy such that if one lock line were to fail, the proximal occluding member 72 may still retain its enlarged structure. With the lock lines extending through the coiled member, they may pass and loop through corresponding openings 132 located near or at the proximal end of the proximal plug 94. While the lock lines are passed through the proximal occluding member 72 and are used to reconfigure and lock the gastric obstruction device 70 into its deployed configuration, the tension lines 226 (see FIG. 14) may be coupled to the lock lines and may extend from the gastric obstruction device 70 and through the control assembly. Moreover, the tension lines 226 may lead either to the proximal end of the coiled member 80 (in which case the entire coiled member may be delivered into the stomach before reconfiguration) or the tension lines 226 may lead through the middle of the coiled member 80 and then outward in a retrograde fashion through the walls of the coiled member which enables reconfiguration of the coiled member as it emerges from the delivery tube in a much more controlled process. The remaining terminal ends of each of the tension lines 226 may be passed externally of the gastric obstruction device 70 as well as externally of the patient body when in use to facilitate the tensioning and securement of the tension lines 226 when collapsing the proximal occluding member 72. With the looped lock lines passing through opening 132, the release mechanism 110 may be selectively collapsed into the proximal plug 94 to lock the tensioning in the lock lines which may maintain the compacted configuration of the proximal occluding member 72. Pulling of the release mechanism 110 may accordingly release the lock lines and allow for the unraveling of the proximal occluding member 72, e.g., during removal of the gastric obstruction device 70 from the patient's stomach. To facilitate the tensioning of the lock lines, they may be engaged through the respective collets to allow for unidirectional passage of the lock lines. Thus, as the lock lines are tensioned through the collets, they may be pulled in only a tensioning direction to prevent or inhibit the unraveling of the proximal occluding member 72. Additionally, the collets or pins may be optionally radio-opaque to facilitate visualization of the gastric obstruction device 70 through, e.g., fluoroscopic visualization, to provide for confirmation of the locked status of the proximal occluding member 72. In another variation, the tension lines 226 can be coupled to lock lines (e.g., lock lines 126, 128, 130, etc.) which are used to lock the coiled member 80 in its compressed, wound, and nested configuration. The tension lines can be used to pull the coiled member 80 through the delivery tube 184 and out of the delivery tube 184 into a device cover 142 or device skin. The tension lines 226 can extend from a delivery assembly 170 (see FIGS. 10, 12G, 13A, and 27) through the turns of the coiled member 80 of the gastric obstruction device 70, and back into the delivery assembly 170 through a lumen of a control tube 228 (see FIGS. 18A, 18B, 18C, 18D, 22, 29A, and 29B). The tension lines 226 can be detached or otherwise separated from the lock lines. The tension lines 226 can then be cut and removed from the gastric obstruction device 70 (e.g., through the control tube 228) when the gastric obstruction device 70 is locked by the locked lines in the nested or wound configuration. FIGS. 6A and 6B show perspective and cross-sectional perspective views, respectively, of another variation of the gastric obstruction device 70 having a device skin or device cover 142. In this variation, the device cover 142 may enclose the coiled member 80 partially or completely such that the surface presented to the surrounding tissue remains completely smooth and uniform. The device cover 142 may approximate the enlarged shape of the proximal occluding member 72 such that the coiled member 80 may be formed entirely within the device cover 142 itself, as described herein. Once the coiled member 80 has been formed within, a tissue interface 144 may be positioned by the terminal end of the coiled member 80 so as to present a smooth surface against the surrounding tissue. FIG. 6A also illustrates that
{'bibliographic_information': "{'country': 'US', 'doc-number': '15878319', 'kind': 'B2', 'date': '20180123', 'extension': '333', 'invention_title': 'Gastric obstruction device deployment assembly and methods of delivering and deploying a gastric obstruction device'}", 'source_file': './grant/2021/ipg210810.xml', 'source_data': 'USPTO-Grant'}