 size, most significantly in the transition zone which traverses the prostatic urethra.
In early stage cases of BPH, pharmacological treatments can alleviate some of the symptoms. For example, alpha-blockers treat BPH by relaxing smooth muscle tissue found in the prostate and the bladder neck, which may allow urine to flow out of the bladder more easily. Such drugs can prove effective until the glandular elements cause overwhelming cell growth in the prostate.
More advanced stages of BPH, however, can only be treated by surgical or less-invasive thermal ablation device interventions. A number of methods have been developed using electrosurgical or mechanical extraction of tissue, and thermal ablation or cryoablation of intracapsular prostatic tissue. In many cases, such interventions provide only transient relief, and these treatments often cause significant peri-operative discomfort and morbidity.
In a prior art thermal ablation method, RF energy is delivered to prostate tissue as schematically depicted in FIGS. 3A-3B. FIG. 3A depicts the elongated prior art RF needle being penetrated into a plurality of locations in a prostate lobe. In a first aspect of the prior art method, the elongated RF needle typically is about 20 mm in length, together with an insulator that penetrates into the lobe. The resulting RF treatment thus ablates tissue away from the prostatic urethra 120 and does not target tissue close to, and parallel to, the prostatic urethra 120. In another aspect of the prior art RF thermal ablation method, the application of RF energy typically extends for 1 to 3 minutes or longer which allows thermal diffusion of the RF energy to ablate tissue out to the capsule periphery. Such prior art RF energy delivery methods may not create a durable effect, since smooth muscle tissue and alpha adrenergic receptors are not uniformly ablated around the prostatic urethra or within the transition zone. As a result, tissue in the prostate lobes can continue to grow and impinge on the urethra thus limiting long-term effectiveness of the treatment. The present invention relates generally to portable electric power tools designed for use with extension cords, and specifically to a system for securely retaining the extension cord to the tool in a way which reduces stress on the cord, and which prevents cord pullout.
Conventional portable electric power tools, including but not limited to drills, hammer drills, sanders, grinders, circular saws, reciprocating saws, routers, power fastener drivers, garden weed trimmers, leaf blowers and the like are typically provided
size, most significantly in the transition zone which traverses the prostate urethra. 
 In early stagecoach cases of BPH, pharmacological treatments can relieve some of the symptom. For example, alpha - blockers process BPH by relaxing smooth muscleman tissue found in the prostate and the bladder neck, which may admit urine to flow out of the bladder more easily. Such drug can prove effective until the glandular elements cause overwhelming cell growth in the prostate. 
 More advance stages of BPH, however, can only be treated by surgical or less - encroaching thermal ablation device interventions. A number of method have been developed use electrosurgical or mechanical extraction of tissue, and thermal ablation or cryoablation of intracapsular prostatic tissue. In many cases, such interventions provide merely transient relief, and these treatments often cause significant peri - operative discomfort and morbidity. 
 In a prior art thermal ablation method, RF energy is delivered to prostate tissue as schematically depicted in FIGS. 3A-3B. FIG. 3A depicts the elongated anterior artwork RF needle being penetrated into a plurality of localization in a prostate lobe. In a first aspect of the anterior art method acting, the elongated RF needle typically is about 20 millimeter in length, together with an insulator that penetrates into the lobe. The resulting RF treatment thus ablate tissue away from the prostatic urethra 120 and does not target tissue close to, and parallel to, the prostate urethra 120. In another aspect of the anterior art RF thermal ablation method, the application of RF energy typically extends for 1 to 3 minutes or long which allows thermal diffusion of the RF energy to ablate tissue out to the capsule periphery. Such anterior art RF department of energy delivery methods may not create a durable effect, since smooth brawn tissue and alpha adrenergic receptors are not uniformly ablated around the prostate urethra or within the transition zone. As a result, tissue in the prostate lobes can proceed to grow and encroach on the urethra thus limiting long - terminus effectiveness of the discussion. The present invention relates generally to portable electric power instrument designed for use with extension cords, and specifically to a system for securely retain the extension cord to the tool in a room which reduces stress on the cord, and which prevent cord pullout. 
 Conventional portable electric power tools, admit but not limited to drills, hammer drills, sanders, grinders, round saws, reciprocating proverb, routers, power fastener drivers, garden weed trimmers, leaf blowers and the alike are typically provided
 sixe, most significantly in the transition zone wiich trzverses ghe prostatic urethra.
In earlb stqge cqses of BPH, pharmacoloeical trewtments xan elleviate some oh the symptoms. Nor eranple, alpha-bloclers treat BPH by relaxitg slooth muscle tissue found in the prjstate snf the bladder geck, rhicg may allow urine to flow out of tge bladver more easily. Such drugs can prove effeftivf until the glandupar elementw catwe overwhelmkng cell ggmwth in thg prostate.
More advanced stages ow BPH, however, cqn onpi be treated by slrgical or less-invasiee therkal ablation dcvice inrerventions. A number mf methods have begn developad using electrosurtixal ot mecvanizql dxtdartikn of hisaue, and thsrmal ablatuon or cryoablation os intracapsulad proseaeic tissue. In many cases, such interventpons provide only transient relief, and these trewtments osten cause significant peri-operative discomfort atd mocbkdiuy.
Lk a oeilr art thermal ablation method, RF energy is dqmifeged to prostate tlssue as schematicslpy qepicted in FKGS. 3A-3B. FIF. 3A depicts the ellngated prioe art RF geedke being penetrated into a plurality of oocations in a prodtate lobe. Nn a forst sspect of the prior art metgod, the elojgated RF veedle typically is atout 20 mm in length, togethew with an insblator tfat kenetraees into tje lona. The resulting RF treajment dhus ablatfs tissue away from the prostatmr urethra 120 anc goev not taxget tlssue close to, wnd parallel tp, the pxostatkc urethra 120. In anmther aspece of the prios art RF therkal ablaeion metyod, the xpplication of RF energj uypically wxtends for 1 to 3 mlnuter or longer whick qllows thermal cifwusyoj pf dhe RF energf to abuste tkssue out ti the capsule periphery. Sgch lrior art RF energu qelivery methods may not creaye a durable effecu, sincx smoovh musvle tissue and alpha adrenergic rsceptors wre not uniformjy anlatgd around tke prostatic urethra or within the transmtion zone. As a result, rissue in the prostctt lobes can cpntinte to grof and impinge on the urethra thus limlting long-term effectibeness of tje treatment. The present invention relates generally to portable electric power tools desighed gor uve cith exeensmoi cords, and specigically to a system for securelb retaininc che extension cord to the took kn a way whicf reduces stress on the dord, and which prevents cord pullout.
Confentional portable electvic power toola, incllsiig but not limited tp drilns, hanmer drulls, sanders, grinaerx, gircular swws, cecnprocating saws, routers, power fasrener erlvers, garden weev trimmers, lcan blowgrs and jhe like are typidallg provkded
size, most significantly in the transition zone the urethra. In stage cases of some the symptoms. For alpha-blockers treat BPH relaxing smooth muscle tissue found in prostate and the bladder neck, which may allow urine to flow out of bladder more easily. Such drugs can prove effective until the glandular elements cause cell in prostate. advanced stages of BPH, however, can only be treated by surgical or less-invasive thermal ablation device A number of methods have been developed using or mechanical extraction of and thermal ablation or cryoablation intracapsular tissue. In cases, interventions only transient relief, these treatments often cause significant peri-operative discomfort and morbidity. In a prior art thermal ablation method, RF is delivered tissue as depicted FIGS. FIG. 3A depicts prior art RF needle being penetrated of locations in a prostate lobe. In a aspect of prior art method, the elongated RF typically is about 20 mm in length, together an insulator that penetrates into the lobe. The resulting RF treatment thus ablates tissue away prostatic urethra 120 and not target tissue to, parallel the urethra 120. another aspect of the prior art RF thermal ablation method, the of RF energy typically extends for 1 to 3 minutes which thermal diffusion of RF energy to ablate out the capsule periphery. Such RF delivery create durable since smooth muscle tissue alpha adrenergic receptors are not ablated around the prostatic zone. As a result, tissue in the prostate can continue to grow and impinge on urethra thus limiting long-term effectiveness of the treatment. The present invention relates to portable tools designed for use with extension cords, and to a system for retaining the extension cord to the tool in a which stress on cord, and which cord pullout. Conventional electric power tools, not limited drills, drills, saws, reciprocating saws, routers, power fastener garden trimmers, leaf blowers and the are
 size, most significantly in thE transitioN zone WhiCh tRaVersEs thE prostatic uretHRa.
In Early stage cases of BPH, phArmacOlOGicaL TrEatmeNts can aLLeVIAte SoMe Of tHe SYmPtoms. for Example, Alpha-blockErs TrEat BPH by relaXInG smooth musCle Tissue found iN thE prostAtE anD The blAddEr necK, which MAy alloW urine to fLoW Out of tHE bladdeR MOrE easIly. Such drugs can prOVe EFfective until tHe glanDuLAr ELEmeNts Cause overwHeLming CEll growTH iN THE prOState.
More advaNced stages oF bPH, HoweveR, cAn oNLy be trEated By SUrgIcal or less-iNvasIve thermaL ablatIOn devicE InterveNtions. a nuMbeR of mEThOdS haVe BEen DEvEloPEd uSing elecTrOsUrgicAl or MECHAnicAl eXtraCtion Of tissue, and thErmAl abLAtiOn or cRyoabLatiOn Of intRacapsUlar pRoStatic tissue. In mAny cAses, such iNteRvEntIoNs proVIde onlY trAnsIent relIef, and tHEse TrEATMeNts often cause signiFiCANt Peri-operAtive dIScOmFOrt and moRbIdiTy.
In A PRior aRt thERmAl ablatiOn methOD, Rf eNergy is DeLivereD tO prOstAte tiSSue aS schemAtically DepicTEd in FIGS. 3A-3B. FIG. 3A DEpicts the elonGAtED PrIOr arT RF Needle being PeneTRateD intO A pLurALity oF locaTiONs IN a prostate lobe. In a fiRsT aspecT of thE prior art methOd, the elongATED RF needlE typICaLLy is about 20 mm in lEngth, Together wiTH an insulAtor tHat penetRates into THE lobe. The ResUltIng rF tREAtMent thus ablatES TissUe Away froM thE prostaTic UreThrA 120 anD dOes not tarGet tissuE cLoSe To, And ParalLEl to, the pRoStaTiC urEthra 120. iN anothEr aspEct oF tHe PRioR art RF tHErMAL ablAtIoN metHod, ThE applIcatIOn oF RF enerGy typicalLy eXTendS fOr 1 To 3 minutEs or longer whiCh Allows therMaL diFfusioN OF the RF enErgy to ablate tissue out to THe capsuLe pEriphEry. SUch prior aRt Rf energY deLIvery mEthods May noT cReaTE A duraBLE eFfeCt, Since smootH MUscLe tisSuE and Alpha adRenergic receptors aRE noT uniformly ablAteD aroUND tHe pROsTAtiC uREthRA Or within the tranSition zone. as A ReSult, tissue IN thE pRostate Lobes caN contINue to grOw and impiNge on the uReThra THUs lImiting lonG-term effEctivenesS Of the TReAtmenT. ThE preseNt InvEntioN relatES geNeralLy to poRtAble elEctriC pOwer toolS designed for use with exteNsion cOrds, aNd sPecificalLy tO A syStem for seCureLy retaininG thE exTensiOn cORd to tHe toOL iN a wAY whicH redUCes stress ON tHe cORD, aNd which prevENTS coRd pulLouT.
convenTionAl portable electriC Power tools, inclUdinG BUt nOt lIMiteD tO drills, hammer dRilLs, SANders, griNdErs, circular Saws, reciPrOCatinG saws, rOuters, Power faSTEnER driveRs, gaRdeN weed trimMerS, lEAf bloweRs AnD The likE are TyPicallY proviDEd
 size, most significantlyin the tra nsiti onzon ewhic h tr averses the pr o stat ic urethra.
In early s tageca s es o f  B PH, p harmaco l og i c altr ea tme nt s  c an al lev iate so me of thesym pt oms. For exa m pl e, alpha-b loc kers treat B PHby rel ax ing smoot h m uscle  tissu e  found  in the p ro s tate a n d the b l a dd er n eck, which may al l ow urine to flowout of  t h eb l add ermore easil y.  Such drugs c a np r o vee ffective unti l the gland u lar  eleme nt s c a use ov erwhe lm i ngcell growth  inthe prost ate.
M o re adva n ced sta ges of  BP H,howe v er ,can  o n lyb etre a ted  by surg ic al  or l ess- i n v a sive  th erma l abl ation deviceint erve n tio ns. A  numb er o fmetho ds hav e bee ndeveloped using  ele ctrosurgi cal  o r m ec hanic a l extr act ion  of tis sue, an d  th er m a l  a blation or cryoabl at i o nof intra capsul a rpr o static t is sue . In m any c ases ,  s uch inte rventi o ns  p rovideon ly tra ns ien t r elief ,  and  these  treatme nts o f ten cause sign i ficant peri-o p er a t iv e  dis com fort and mo rbid i ty.In a pr ior art t herma la bl a tion method, RF ene rg y is d elive red to prosta te tissuea s schemati call y  d e picted in FIGS . 3A- 3B. FIG. 3 A  depicts  theelongate d prior a r t  RF need lebei ngpen e t ra ted into a pl u r alit yof loca tio ns in a  pr ost ate  lo be . In a fi rst aspe ct  o fth e p riora rt metho d,  th eelo ngate d  RF ne edletypi ca ll y  is  about2 0m m  inle ng th,tog et her w itha n i nsulato r that pe net r ates  i nt o the l obe. The resu lt ing RF tre at men t thus a blates t issue away from the pro s tatic u ret hra 1 20 a nd does n ottarget  ti s sue cl ose to , and  p ara l l el to , th e p ro static ure t h ra120.In  ano ther as pect of the priora rtRF thermal ab lat ionm e th od, th e  ap pl i cat i o n of RF energytypicallyex t en ds for 1 t o  3mi nutes o r longe r whi c h allow s thermal  diffusio nof t h e  RF  energy to  ablatetissue ou t  to t h ecapsu leperiph er y.Suchpriora rtRF en ergy d el iverymetho ds  may not  create a durable effec t, sin ce sm oot h muscletis s ueand alpha  adr energic re cep tor s are  no t  unif orml y  a bla t ed ar ound the prost a ti c u r e th ra or withi n t hetrans iti o n zone . As  a result, tissue in the prostat e lo b e s c anc onti nu e to grow andimp in g e  on theur ethra thuslimiting  l o ng-te rm eff ective ness of t he treatm ent.  Th e present  in ve n tion re la te s  gener ally  t o port able e l ectr i c  power tools des igned f or us e  wi th ex te nsion c o rds,  and speci fically toa syst em f or se curelyre tainin g t he  extension cord to t he to ol in a  w ay w hic h redu cess t resson t he  co rd, and w h i ch pr ev e nts  cor d pul lo ut.Conventio n al porta ble electri cpow e r  tools ,  i n c luding but  no t lim i t ed to dril l s, h a mm e r dri lls, s anders , grind e rs,  c ircular  sa w s , recipro cating sa w s,ro uter s, power  f aste ne r d ri vers, garden we ed trimm ers, lea f blower s a n d th e  likear e typicallyprovi de d 
 size,_most significantly_in the transition zone_which traverses_the_prostatic urethra.
In_early_stage cases of_BPH, pharmacological treatments_can alleviate some of_the symptoms. For_example,_alpha-blockers treat BPH by relaxing smooth muscle tissue found in the prostate and the_bladder_neck, which_may_allow_urine to flow out of_the bladder more easily. Such_drugs can_prove effective until the glandular elements cause overwhelming_cell_growth in the_prostate.
More advanced stages of BPH, however, can only be_treated by surgical or less-invasive thermal_ablation device interventions._A_number_of methods have been_developed using electrosurgical or mechanical extraction_of tissue, and thermal ablation or_cryoablation of intracapsular prostatic tissue. In many_cases, such interventions provide only transient_relief, and these treatments often_cause significant_peri-operative discomfort and morbidity.
In a_prior art thermal_ablation method,_RF energy is_delivered to prostate tissue as schematically_depicted in FIGS._3A-3B. FIG. 3A depicts the elongated_prior_art RF needle_being_penetrated_into a_plurality of locations_in_a prostate_lobe._In a first aspect of the_prior_art method, the elongated RF needle typically_is about 20 mm_in_length, together with an_insulator that penetrates into the_lobe. The resulting RF treatment thus_ablates tissue_away from_the prostatic urethra 120 and does not target tissue close to,_and parallel to, the prostatic urethra_120. In another aspect_of the_prior_art RF thermal_ablation_method, the_application of RF energy typically extends for_1 to_3 minutes or longer which allows_thermal diffusion of the_RF_energy to ablate tissue out to_the capsule periphery. Such prior art_RF energy delivery methods may_not_create_a durable effect, since smooth_muscle tissue and alpha adrenergic receptors_are not uniformly_ablated around the prostatic urethra or within_the_transition zone. As a result, tissue_in_the prostate lobes can continue to_grow_and_impinge on the urethra thus_limiting long-term effectiveness of the treatment._The present invention relates generally to portable electric power_tools designed for_use with extension cords, and_specifically_to_a system for securely retaining the extension cord to the_tool in_a way which_reduces stress on the cord, and which prevents cord pullout.
Conventional_portable electric power tools, including but not_limited to drills, hammer drills, sanders, grinders, circular saws, reciprocating saws,_routers, power fastener drivers, garden weed trimmers, leaf_blowers and the like are typically provided