ulsifying the selected tissue in situ. The hollow bore of the cutting tip communicates with the bore in the horn that in turn communicates with the aspiration line from the handpiece to the console. A reduced pressure or vacuum source in the console draws or aspirates the emulsified tissue from the eye through the open end of the cutting tip, the cutting tip and horn bores and the aspiration line and into a collection device. The aspiration of emulsified tissue is aided by a saline flushing solution or irrigant that is injected into the surgical site through the small annular gap between the inside surface of the irrigating sleeve and the cutting tip.
Recently, a new cataract removal technique has been developed that involves the injection of hot (approximately 45.degree. C. to 105.degree. C.) water or saline to liquefy or gellate the hard lens nucleus, thereby making it possible to aspirate the liquefied lens from the eye. Aspiration is conducted with the injection of the heated solution and the injection of a relatively cool solution, thereby quickly cooling and removing the heated solution. This technique is more fully described in U.S. Pat. No. 5,616,120 (Andrew, et al.), the entire contents of which is incorporated herein by reference. The apparatus disclosed in the publication, however, heats the solution separately from the surgical handpiece. Temperature control of the heated solution can be difficult because the fluid tubings feeding the handpiece typically are up to two meters long, and the heated solution can cool considerably as it travels down the length of the tubing.
Therefore, a need continues to exist for a surgical handpiece that can heat internally the solution used to perform the liquefaction technique. Technical Field
This application relates to surgical instrumentation, and more particularly, to a reusable laparoscopic device that can be disassembled for cleaning. 2. Background of Related Art
In laparoscopic surgical procedures, surgery is performed through a small incision formed in a patient's body. The incision provides access for a cannula through which surgical instruments are extended for introduction into the patient's abdominal cavity. A wide variety of surgical instruments are utilized during a laparoscopic procedure including, for example, staplers, clip appliers, graspers, dissectors and retractors.
Traditionally, laparoscopic instruments have been manufactured as reusable devices which can be cleaned and sterilized following a procedure, or disposable devices which are discarded after a single surgical procedure. With disposable devices, cleaning is not required, since
ulsifying the selected tissue in situ. The hollow bore of the cutting peak communicates with the tidal bore in the horn that in turn communicates with the ambition cable from the handpiece to the console. A reduced press or vacuum source in the console table draws or aspirates the emulsified tissue from the center through the open end of the cutting tip, the swerve tip and horn bores and the aspiration channel and into a collection device. The aspiration of emulsified tissue is help by a saline flushing solution or irrigant that is injected into the surgical site through the minor annular gap between the inside surface of the irrigating sleeve and the cutting tip. 
 Recently, a new cataract removal proficiency has been developed that involves the injection of hot (approximately 45.degree. C. to 105.degree. C.) water or saline to liquefy or gellate the hard lens core, thereby making it possible to aspirate the liquefied lens from the eye. Aspiration is conducted with the injection of the heated solution and the injection of a relatively cool solution, thereby quickly cooling and removing the heated solution. This technique is more amply described in U.S. Pat. No. 5,616,120 (Andrew, et al .), the integral content of which is incorporate herein by reference. The apparatus disclosed in the issue, however, heats the solution individually from the surgical handpiece. Temperature control of the heated solution can be difficult because the fluid tube feeding the handpiece typically are up to two meters long, and the heated solution can cool considerably as it travels down the length of the tubing. 
 consequently, a need continues to exist for a surgical handpiece that can heat internally the solution used to perform the liquefaction technique. Technical Field 
 This application relate to surgical instrumentation, and more particularly, to a reusable laparoscopic device that can be disassembled for cleaning. 2. Background of Related Art 
 In laparoscopic surgical routine, surgery is performed through a small incision form in a patient's body. The incision provides access for a cannula through which surgical legal document are extended for insertion into the patient's abdominal cavity. A across-the-board variety of surgical instrument are utilized during a laparoscopic operation including, for exercise, staplers, clip appliers, graspers, dissectors and retractors. 
 Traditionally, laparoscopic instruments have been manufacture as reusable devices which can be cleaned and sterilized following a procedure, or disposable devices which are discarded after a single surgical operation. With disposable devices, cleaning is not required, since
ulslfying the selected tissme in situ. The hollow bmre of the cutging tip communicates with tie bire ib the horn that in turv communibates wity tht aspiration line from thc hansiiece vo the console. S reduced [ressure or vawujm source in the console draws or aspyrates yhf emulsified tyssut fwom fhe eye through the open end of ths cuttiig tip, the cuttong tip and horn bores and the aspiration line ajd into a cillesrion device. Ghe aspirauimn of emulaified tissue is aided by a salkne fkushing soourioj or irriganv that is injected into tha surgival site throunh thx smqll annular gap betwexn the inside surfacg of the isrngating sleeve and thw xuttitg thp.
Rezwntuy, z iew catarwct removal tschnique haw been developed thst pmvolves the jnjectyog of hot (approximately 45.degree. C. to 105.degrte. C.) sater or saline to liquwfy or gellate the hatd lens nusleus, thereby making it possible to aspirate the niquehidd oeks ffim the eye. Aspiration is conducted with the injqdtook of the heated folution anc hhr injection of a relcfibely cool solution, therebi quicjly cooligg amd removing the heated solurion. This tebhniwue is more fully bescribed in U.S. Kat. No. 5,616,120 (Andrew, et al.), the entixe confents of whlch is indurporated herein by raference. The apparatus disslosed in the publicxtiom, howeder, heats hhe solution separately vrom jhe susgical hanfpiece. Temperature control of tix heated solujiot cdn be diyficulb because the fjuid tubings fgeding thz handoiece typibally are up to two ieters long, atf the heated solutiog cab coil conskaerably as it yravels down the lebgth of the tubing.
Bherewkre, a need contnuuts to exist for s sjrgycwl hwtdpiece that can hexy intdrnally the roluyion used to perform the liquefaction techmizue. Techbical Fiqld
This applivation relates to durgiral inrtrumrntwtion, and more particularly, to a reusabpe japaroscopic devlce jhat can be disassembled for cleaning. 2. Background if Related Art
In lqparoscopic surgicak procedures, surgqry is pesformed through a smqll incision formtd in a patient's body. Tge inchsion provides access for a cannula through which surgical instruments are extwnded how introductjon onto nhe 'atient'f abvooinal cavity. A wpde variety of surgical instrumeits are uthlnzed during a laparoscopic prpcddure includivg, for example, staplers, dlip appkiers, graspers, dissectors and rrtractors.
Traditionally, lsparoscopic ihstrumvhtr have been manufavtured as rwusable devlces which can be cpeaned anf sttrilnzed following a procedure, or disposablw fevices which arx discarded wnter a singlg surgical procedhre. Slth dksposable devoces, cleaning os not required, sincv
ulsifying the selected tissue in situ. The of cutting tip with the bore turn with the aspiration from the handpiece the console. A reduced pressure or source in the console draws or aspirates the emulsified tissue from the eye the open end of the cutting tip, the cutting tip and horn bores the line into collection device. The aspiration of emulsified tissue is aided by a saline flushing solution or irrigant is injected into the surgical site through the annular gap between the surface of the irrigating sleeve the tip. Recently, new removal has been developed involves the injection of hot (approximately 45.degree. C. to 105.degree. C.) water or saline to liquefy or the hard thereby making possible aspirate liquefied lens from Aspiration is conducted with the injection solution and the injection of a relatively cool thereby quickly and removing the heated solution. This is more fully described in U.S. Pat. No. (Andrew, et al.), the entire contents of which is incorporated herein by reference. The apparatus the publication, however, heats solution separately from surgical Temperature of heated solution be difficult because the fluid tubings feeding the handpiece typically are to two meters long, and the heated solution can cool it down the length the tubing. Therefore, a continues exist for a surgical can internally to the technique. Technical Field This relates to surgical instrumentation, and particularly, to a reusable disassembled for cleaning. 2. Background of Related Art laparoscopic surgical procedures, surgery is performed through small incision formed in a patient's body. The incision provides access for cannula through instruments are extended for introduction into the patient's cavity. A wide variety surgical instruments are utilized during a laparoscopic procedure including, example, clip appliers, dissectors and retractors. laparoscopic instruments have manufactured as reusable can be and following disposable devices which are discarded after single procedure. With disposable devices, cleaning not
ulsifying the selected tissuE in situ. The HolloW boRe oF tHe cuTtinG tip communicatES witH the bore in the horn that iN turn CoMMuniCAtEs witH the aspIRaTIOn lInE fRom ThE HaNdpieCe tO the conSole. A reducEd pReSsure or vacuuM SoUrce in the cOnsOle draws or asPirAtes thE eMulSIfied TisSue frOm the eYE throuGh the open EnD Of the cUTting tiP, THe CuttIng tip and horn boreS AnD The aspiration lIne and InTO a COLleCtiOn device. ThE aSpiraTIon of emULsIFIEd tISsue is aided by A saline flusHIng SolutiOn Or iRRigant That iS iNJecTed into the sUrgiCal site thRough tHE small aNNular gaP betweEn tHe iNsidE SuRfAce Of THe iRRiGatINg sLeeve and ThE cUttinG tip.
rECENtly, A neW catAract Removal techniQue Has bEEn dEveloPed thAt inVoLves tHe injeCtion Of Hot (approximatelY 45.degRee. C. to 105.degRee. c.) wAteR oR saliNE to liqUefY or Gellate The hard LEns NuCLEUs, Thereby making it posSiBLE tO aspiratE the liQUeFiED lens froM tHe eYe. AsPIRatioN is cONdUcted witH the inJEcTiOn of the HeAted soLuTioN anD the iNJectIon of a RelativeLy cooL Solution, therebY Quickly coolinG AnD REmOVing The Heated solutIon. THIs teChniQUe Is mORe fulLy desCrIBeD In U.S. Pat. No. 5,616,120 (Andrew, et al.), ThE entirE contEnts of which is IncorporatED HErein by rEferENcE. the apparatus diSclosEd in the pubLIcation, hOweveR, heats thE solution SEParately FroM thE suRgiCAL hAndpiece. TempeRATure CoNtrol of The Heated sOluTioN caN be DiFficult beCause the FlUiD tUbIngS feedINg the hanDpIecE tYpiCally ARe up to Two meTers LoNg, ANd tHe heateD SoLUTion CaN cOol cOnsIdErablY as iT TraVels dowN the lengtH of THe tuBiNg.
therefoRe, a need continUeS to exist foR a SurGical hANDpiece thAt can heat internally the sOLution uSed To perForm The liquefActIon tecHniQUe. TechNical FIeld
THiS apPLIcatiON ReLatEs To surgical INStrUmentAtIon, aNd more pArticularly, to a reusABle Laparoscopic dEviCe thAT CaN be DIsASseMbLEd fOR Cleaning. 2. BackgroUnd of RelatEd aRt
in laparoscOPic SuRgical pRocedurEs, surGEry is peRformed thRough a smaLl InciSIOn fOrmed in a paTient's boDy. The inciSIon prOViDes acCesS for a cAnNulA throUgh whiCH suRgicaL instrUmEnts arE exteNdEd for intRoduction into the patient'S abdomInal cAviTy. A wide vaRieTY of Surgical iNstrUments are uTilIzeD duriNg a LAparoScopIC pRocEDure iNcluDIng, for exaMPlE, stAPLeRs, clip appliERS, GraSpers, DisSEctors And rEtractors.
TraditioNAlly, laparoscopIc inSTRumEntS Have BeEn manufactured As rEuSABle devicEs Which can be cLeaned anD sTEriliZed folLowing A procedURE, oR DisposAble DevIces which Are DiSCarded aFtEr A Single SurgIcAl procEdure. WITh diSPOsable devices, cleAning IS Not reQUirEd, sinCe
ulsifying the selected tis sue in sit u. Th e h oll ow  bor e of  the cutting t i p co mmunicates with the bo re in  t h e ho r nthatin turn co m m uni ca te s w it h  t he as pir ation l ine from t heha ndpiece to t h econsole. A  re duced pressu reor vac uu m s o urceinthe c onsole drawsor aspira te s  the e m ulsifie d ti ssue  from the eye thr o ug h  the open endof the  c u tt i n g t ip,  the cutti ng  tipa nd horn bo r e s  an d  the aspirati on line and int o a co ll ect i on dev ice.Th e  as piration of  emu lsified t issuei s aided by a sa line f lus hin g so l ut io n o ri rri g an t t h atis injec te dintothes u r g ical  si te t hroug h the small a nnu larg apbetwe en th e in si de su rfaceof th eirrigating slee ve a nd the cu tti ng  ti p. 
Rece n tly, a  ne w c ataract  remova l  te ch n i q ue  has been develope dt h at  involve s thei nj ec t ion of h ot  (a ppro x i matel y 45 . de gree. C.  to 10 5 .d eg ree. C. )wateror  sa lin e tol ique fy orgellatethe h a rd lens nucleu s , thereby mak i ng i tp ossi ble  to aspirat e th e  liq uefi e dlen s  from  theey e .A spiration is conduc te d with  theinjection ofthe heated s o lution a nd t h ei njection of arelat ively cool solution , the reby qui ckly cool i n g and re mov ing  th e h e a te d solution. T h i s te ch nique i s m ore ful lydes cri bed  i n U.S. Pa t. No. 5 ,6 16 ,1 20  (A ndrew ,  et al.) ,the  e nti re co n tentsof wh ichis  i n cor porated he r e in b yre fere nce .The a ppar a tus  disclo sed in th e p u blic at io n, howe ver, heats th esolution s ep ara tely f r o m the su rgical handpiece. Tempe r ature c ont rol o f th e heatedsol utioncan be dif ficult  beca us e t h e  flui d tu bin gs  feeding t h e  ha ndpie ce  typ icallyare up to two mete r s l ong, and thehea teds o lu tio n  c a n c oo l  co n s iderably as ittravels do wn th e length o f  th etubing. 
Theref ore,a  need c ontinuesto existfo r as u rgi cal handpi ece that  can heat inter n al ly th e s olutio nuse d toperfor m  th e liq uefact io n tech nique .Technica l Field
This applicatio n rela tes t o s urgical i nst r ume ntation,andmore parti cul arl y, to  ar eusab le l a pa ros c opicdevi c e that ca n  b e d i s as sembled for c l ean ing.2.B ackgro undof Related Art
In laparoscopic s urgi c a l p roc e dure s,  surgery is pe rfo rm e d  through  a  small inci sion for me d  in a  patie nt's b ody. Th e in c isionprov ide s accessfor  a cannula  t hr o ugh wh ichsu rgical  instr u ment s are extended for  intr o d uctio n  in to th epatient ' s ab dominal ca vity. A wid e vari etyof su rgicalin strume nts  a re utilize d  during a  lapa roscopi cproc edu re inc ludi n g , for  exa mp le,  staplers , cl i pap p lie rs,grasp er s, d issectors and retr act o rs.
Tra di tio n a lly, l a pa r o scopic ins tru ments h ave been m a nufa c tu r ed as  reusa ble de vices w h ich  c an be c lea n e d and ste rilized f o llo wi ng a  procedu re , or  d isp os able devices wh ich arediscarde d aftera s i ngle surgic al  procedure.Withdi s posable d evi ces, cl e ani ngisnotreq uire d , since
ulsifying the_selected tissue_in situ. The hollow_bore of_the_cutting tip_communicates_with the bore_in the horn_that in turn communicates_with the aspiration_line_from the handpiece to the console. A reduced pressure or vacuum source in the_console_draws or_aspirates_the_emulsified tissue from the eye_through the open end of_the cutting_tip, the cutting tip and horn bores and_the_aspiration line and_into a collection device. The aspiration of emulsified tissue_is aided by a saline flushing_solution or irrigant_that_is_injected into the surgical_site through the small annular gap_between the inside surface of the_irrigating sleeve and the cutting tip.
Recently, a_new cataract removal technique has been_developed that involves the injection_of hot_(approximately 45.degree. C. to 105.degree._C.) water or_saline to_liquefy or gellate_the hard lens nucleus, thereby making_it possible to_aspirate the liquefied lens from the_eye._Aspiration is conducted_with_the_injection of_the heated solution_and_the injection_of_a relatively cool solution, thereby quickly_cooling_and removing the heated solution. This technique_is more fully described_in_U.S. Pat. No. 5,616,120_(Andrew, et al.), the entire_contents of which is incorporated herein_by reference._The apparatus_disclosed in the publication, however, heats the solution separately from the_surgical handpiece. Temperature control of the_heated solution can be_difficult because_the_fluid tubings feeding_the_handpiece typically_are up to two meters long, and_the heated_solution can cool considerably as it_travels down the length_of_the tubing.
Therefore, a need continues to_exist for a surgical handpiece that_can heat internally the solution_used_to_perform the liquefaction technique. Technical_Field
This application relates to surgical instrumentation,_and more particularly,_to a reusable laparoscopic device that can_be_disassembled for cleaning. 2. Background of_Related_Art
In laparoscopic surgical procedures, surgery is_performed_through_a small incision formed in_a patient's body. The incision provides_access for a cannula through which surgical instruments are_extended for introduction_into the patient's abdominal cavity._A_wide_variety of surgical instruments are utilized during a laparoscopic procedure_including, for_example, staplers, clip_appliers, graspers, dissectors and retractors.
Traditionally, laparoscopic instruments have been manufactured_as reusable devices which can be cleaned_and sterilized following a procedure, or disposable devices which are discarded_after a single surgical procedure. With disposable devices,_cleaning is not required, since