A kind of holdfast for promoting prostata tissueTechnical field
The invention provides a kind of holdfast for promoting prostata tissue, belong to technical field of medical instruments.
Background technology
Prostatic hyperplasia is the common disease of elderly men, and the male sicken rate of more than 60 years old is up to 80%.Its cause of disease be byHypertrophy in prostate two lateral lobe or middle period increases and charges in bladder or urethra, compressing bladder neck or urethra, thus producesThe multiple lower urinary tract symptoms such as raw frequent micturition, urgent micturition, urine retention, urine time increase at night and trouble urinating.Although prostatic hyperplasiaSeldom be tool adventurous, but the quality of life of elderly men can be severely impacted, and also have many alsoSend out disease, including urine retention, renal insufficiency, urinary tract infection, hematuria and vesical calculus etc..Literature research shows 80 years oldAmerican male in 25% need to accept various forms of Treatment of Benign Prostatic Hyperplasia.These therapeutic modalities mainly include medicineTreatment, surgical operation and Minimally Invasive Surgery.Surgical operation therapy prostatic hyperplasia mainly has a following several ways: per urethraProstatectomy (TURP), per urethra prostatic secretions (TVP) and open prostatectomy.Wherein TURPBeing the routine operation mode for the treatment of prostatic hyperplasia, this operation is mainly under general anesthesia or spinal anesthesia, makes electricity consumptionThe prostata tissue of the cutter excision suitable volume of patient, thus alleviate the compressing to urethra or block.Although TURP isFor the goldstandard of prostatic hyperplasia operative treatment, but it also has higher complication occurrence risk.Literature research shows 65%Patient there will be retrograde ejaculation, but also have other multiclass complication occurred frequently, such as postoperative stimulation (15%), erection meritEnergy obstacle (10%), neck of bladder shrinks (7%), infects (6%), severe hematuria (6%), acute urinary retention (5%), needsWant second operation (5%) and incontinence (3%) etc..Typical case's TURP postoperative recovery also needs to the use indwelling of some daysThe hospitalization of catheter, although in ensuing some weeks, obstruction property symptom can gradually alleviate, but during urinatingStill have pain or discomfort.
Also has the prostate treatment method of the most more Wicresoft: prostate bracket simultaneously.This operation by urethra implant support,Thus promote prostata tissue to shrink by the flexible support expanded, in order to mechanically support urethra, finally alleviate prostatitisThe lower urinary tract symptom that gland hypertrophy causes.But now due to its higher adverse reaction rate and be rarely used.It is mainWant complication include stent migration (12.5%), support crust (27.5%), urinary incontinence (3%) and recurrent pain orPerson is uncomfortable.And these untoward reaction make the support of 8%-47% need to be removed to make urethra again be blocked up by hyperplastic tissuePlug.
Therefore, the effective operation method of the great majority for the treatment of prostatic hyperplasia is respectively provided with all kinds of high risk untoward reaction.AndAnd existing therapeutic method of surgery is required to general anesthesia or spinal anesthesia and implements in Surgical Operating Room.And patient needsHospital stays that will be longer, in postoperative a period of time, also have more self limiting complication, simultaneously in order to prevent artThe most hemorrhage and potential occluding thrombus is formed, and needs to place catheter.
In sum, although surgical operation therapy prostatic hyperplasia effect is notable, but complication risk is higher and patientOperation and post operative recovery procedures are painful.Although and invasive manner therapeutic process patient is the most comfortable, but surgical effect is poor,Thus be not often used.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, and a kind of holdfast for promoting prostata tissue be provided,This holdfast is applicable to Minimally Invasive Surgery mode and treats prostatic hyperplasia, and the postoperative few intercurrent disease caused.
Realizing the technical scheme that the object of the invention used is that a kind of holdfast for promoting prostata tissue, including firstHoldfast, the second holdfast and fixing line, the first holdfast and the second holdfast are connected by fixing line；One end of described first holdfastBeing arc spring lamination for fixing pipe, the other end, the caliber of fixing pipe is 0.1mm～0.5mm, a length of first holdfast length20%～70%, the central axis of described arc spring lamination place camber line and the first holdfast is tangent, the bending direction back of the body of arc spring laminationTo fixing line direction；Described second holdfast is to be connected the V constituted by one of them end by the first jig arm and the second jig armType elastic clip, the relative side of the first jig arm and the second jig arm is respectively equipped with the identical lock tooth A of structure and lock tooth B,Lock tooth A and lock tooth B constitute lock tooth button, described lock tooth A and lock tooth B all include vertically order arrange half slot, 1Individual above anti-avulsion tooth and more than 1 guide gear, one end of fixing line is fixed in fixing pipe, the other end is fixedly clamped in twoIn the fixing hole that individual half slot is constituted, described half slot, anti-avulsion tooth and guide gear fix end to V-type bullet from V-type elastic clipProperty folder movable end order distribution, described guide gear and anti-avulsion tooth be towards half slot direction tilt inclined teeth, inclined teethIncluding fixing the second inclined-plane of end near the first inclined-plane of V-type elastic clip movable end with near V-type elastic clip, anti-avulsion toothFirst inclined-plane is more than the first inclined-plane of guide gear and the plane of symmetry of V-type elastic clip with the angle of the plane of symmetry of V-type elastic clipAngle, the tooth pitch of guide gear is more than anti-avulsion tooth.
A length of 5mm～15mm of described first holdfast, width is 0.5mm～2mm.
One end heat seal of fixing line is fixed in fixing pipe or is connected with fixing pipe by buckle.
The 30%～80% of a length of first holdfast length of arc spring lamination.
The 40%～80% of a length of V-type elastic clip length of lock tooth button.
A diameter of 0.1mm～0.5mm of described fixing line.
The fixing end of V-type elastic clip is for being welded and fixed end.
The equal biocompatible materials of material of the first holdfast and the second holdfast, the material of fixing line is Nitinol, can absorbStitching thread or nonabsorable stitching thread.
As shown from the above technical solution, the holdfast for promoting prostata tissue that the present invention provides, main body includes the first anchorNail, the second holdfast and fixing line, wherein the 1, first holdfast is delivered at capsula prostatica and from hollow through hollow puncture tubeDischarging in puncture tube, first holdfast one end is fixing pipe, and fixing pipe is connected with one end of fixing line, and the caliber of fixing pipe is0.1mm～0.5mm, the 20%～70% of a length of first holdfast length, its caliber meets the hollow of existing holdfast conveyer deviceThe conveying requirement of puncture tube, fixing pipe self has certain length so that the outlet of fixing pipe i.e. fixes line to the first holdfastApplication point be positioned at the middle part of the first holdfast, the first holdfast and fixing line are mutually perpendicular to thus realize the self-locking of the first holdfast,The other end of the first holdfast is arc spring lamination, and the central axis of arc spring lamination place camber line and the first holdfast is tangent, it is ensured that arcThe remainder arc transition of shape shell fragment and the first holdfast, the bending direction of arc spring lamination fixes line direction dorsad so that arcThe end that contact surface is cambered surface and arc spring lamination of shape shell fragment and capsula prostatica is away from capsula prostatica, it is to avoid arc bulletThe end touching capsula prostatica of sheet causes peplos damaged, and arc spring lamination has certain elasticity, the bending direction of arc spring laminationFix line direction dorsad so that when arc spring lamination is installed in hollow puncture tube, its end is by the compressing of hollow puncture tube tube wallDeforming towards i.e. hollow puncture tube axis, fixing line direction, the constraint of the moment arc spring lamination of the first holdfast release disappears,Arc spring lamination outwards ejects under the effect of himself elastic-restoring force and is released at capsula prostatica, draws at fixing line simultaneouslyProduce deflection under power effect so that the first holdfast is vertical with fixing line, form self-locking；2, the second holdfast punctures in hollowPipe is tight by fixing clamper after regaining, and the second holdfast is for being made up of by one of them end is connected the first jig arm and the second jig armV-type elastic clip, the other end of fixing line is fixedly clamped in V-type elastic clip so that the fixing line work to the second holdfastIt is positioned at the middle part of the second holdfast with point, forms the self-locking of the second holdfast, the first jig arm and the opposite face of the second jig arm are arrangedLock tooth button, fixing clamper is fastened when fastening by lock tooth button, and lock tooth button includes fixing hole, the anti-avulsion that order is arranged verticallyTooth to and guide gear pair, the aperture of fixing hole is less than the diameter of fixing line, and fixing line slips into from the movable end of V-type elastic clipBetween first jig arm and the second jig arm, through guide gear to and anti-avulsion tooth to after enter fixing hole locking, for ease of fixing lineSlip into, guide gear and anti-avulsion tooth are disposed as the inclined teeth tilted towards half slot direction, and guide gear and anti-avulsion tooth are formedThe half-duplex channel of reverse locking, inclined teeth includes near the first inclined-plane of V-type elastic clip movable end with near V-type elastic clipSecond inclined-plane of fixing end, the first inclined-plane is guide surface, and the second inclined-plane is locking face, the first inclined-plane of anti-avulsion tooth withThe angle of the plane of symmetry of V-type elastic clip the first inclined-plane more than guide gear and the angle of the plane of symmetry of V-type elastic clip, guideThe tooth pitch of tooth is longer more than the first chamfer length of anti-avulsion tooth, i.e. guide gear, the gradient is milder so that guide gear to onlyThe passage formed is gradually reduced by de-tooth, progressively the fixing line of compression, and the anti-avulsion tooth of close fixing line is less than guide gear, it is simple toFixing line slips into and ensures that fixing line will not reversely skid off simultaneously；3, fixing line, for connecting the first holdfast and the second holdfast,I shape holdfast, the tissue of compression hypertrophy are integrally formed.
Compared with prior art, the advantage of the holdfast for promoting prostata tissue that the present invention provides is: this holdfast is tiedThe simple volume of structure is little, can be delivered at hamartoplasia by existing holdfast conveyer device, and the structure of overall I shape realizesCompression to hyperplastic tissue；Make the first holdfast automatically form self-locking when release by arranging arc spring lamination, reduce operationFailed risk；Arranging lock tooth button on the clamping face of the second holdfast, lock tooth fastener has the function of unidirectional guiding, reverse locking,The fixing line landing being clamped is avoided to cause operative failure；The diseases such as this holdfast treatment prostatic hyperplasia are used to have effect brightAobvious and that effect is lasting feature.
Accompanying drawing explanation
The overall structure schematic diagram of the holdfast for promoting prostata tissue that Fig. 1 provides for the present invention.
Fig. 2 is the structural representation of V-type elastic clip.
Wherein, 1-the first holdfast, 2-the second holdfast, 3-fixes line, 4-arc spring lamination, and 5-is fixing to manage, 6-the first jig arm,7-the second jig arm, 8-half slot, 9-anti-avulsion tooth, 10-guide gear.
Detailed description of the invention
Illustrating the present invention in detail with embodiment below in conjunction with the accompanying drawings, present disclosure is not limited to following realityExecute example.
The present invention provide for promoting the holdfast of prostata tissue, its structure as it is shown in figure 1, include the first holdfast 1,Second holdfast 2 and fixing line 3, the first holdfast 1 is connected by fixing line 3 with the second holdfast 2；The material of holdfast is notAbsorbable material, such as rustless steel or Nitinol, or absorbable material, such as magnesium alloy or ferroalloy, orAbsorbable polymer material, in the present embodiment, the first holdfast and the second holdfast all select Nitinol, the length of the first holdfastFor 5mm～15mm, width is 0.5mm～2mm, and the material of fixing line is Nitinol, nonabsorable stitching thread or canAbsorbable suture line class, it is desirable to material can bear 2kg～5kg pulling force, a diameter of 0.1mm～0.5mm of fixing line.
One end of described first holdfast is arc spring lamination 4 for fixing pipe 5, the other end, the caliber of fixing pipe 5 be 0.1mm～0.5mm, the 20%～70% of a length of first holdfast length, one end heat seal of fixing line 3 is fixed in fixing pipe or logicalCross buckle to be connected with fixing pipe, the 30%～80% of a length of first holdfast length of arc spring lamination, described arc spring lamination 4The central axis of place camber line and the first holdfast is tangent, and the bending direction of arc spring lamination fixes line direction dorsad；
Seeing Fig. 2, described second holdfast 2 is to be welded structure by the first jig arm 6 and the second jig arm 7 by one of them endThe V-type elastic clip become, the relative side of the first jig arm and the second jig arm is respectively equipped with the identical lock tooth A of structure and lockTooth B, lock tooth A and lock tooth B composition lock tooth button, the 40%～80% of a length of V-type elastic clip length of lock tooth button, describedLock more than 8,1 anti-avulsion tooth 9 of half slot and more than 1 guiding that tooth A and lock tooth B all includes that order is arranged verticallyTooth 10, the other end of fixing line 3 is fixedly clamped in the fixing hole that two half slots 8 are constituted, described half slot 8, onlyDe-tooth 9 and guide gear 10 from the fixing end of V-type elastic clip to V-type elastic clip movable end order distribution, described guide gear andAnti-avulsion tooth is the inclined teeth tilted towards half slot direction, and it is first oblique that inclined teeth includes near V-type elastic clip movable endFace and close V-type elastic clip fix the second inclined-plane of end, the first inclined-plane of anti-avulsion tooth and the folder of the plane of symmetry of V-type elastic clipAngle is more than the angle on the first inclined-plane of guide gear and the plane of symmetry of V-type elastic clip, and the tooth pitch of guide gear is more than anti-avulsion tooth.
The operating procedure that this holdfast is applied in prostatic hyperplasia operation is as follows:
(1) the first holdfast and fixing line are positioned in hollow puncture tube, the hollow puncture tube per urethra of holdfast will be loadedCarrying out the prostate biopsy of side, hollow puncture tube forms puncture channel by puncturing；
(2) regaining hollow puncture tube at capsula prostatica after piercing, discharge the first holdfast, the first holdfast relies on itArc spring lamination is released at capsula prostatica while hollow puncture tube is regained, and produces under the pulling force effect of fixing line simultaneouslyRaw deflection so that the first holdfast is vertical with fixing line, forms self-locking；
(3) the fixing line at stretching puncture, and place the second holdfast, close its lock tooth button, thus after fixing stretchingFixing line；
(4) discharging the second holdfast, cut off fixing line, operation completes, and the first holdfast, fixing line and the second holdfast are to increasingRaw tissue is compressed.