CN118370579A - Fistula tract treatment closing device - Google Patents

Abstract

The invention relates to the field of medical instruments, in particular to a fistula tract treatment closing device. The utility model provides a fistula way treatment closing device, includes the casing, the casing rear end is equipped with operating handle, the casing front end is equipped with the fixed pipe that extends forward, fixed intraductal cooperation has the linkage piece, the linkage piece rear end with operating handle linkage, the linkage piece front end is equipped with the transport tool bit that is used for the cooperation implant, operating handle and linkage piece all are equipped with the first passageway that supplies the mirror body of endoscope to pass through, carry the tool bit cavity setting and have the second passageway that runs through from beginning to end, the linkage piece front end with carry the tool bit rear end through screw-thread fit structure can dismantle fixedly and make first passageway and second passageway link up. The device can improve the fixing stability of the conveying tool bit, and can reduce the possibility of shaking of the conveying tool bit in the moving process so as to ensure the effect of implantation operation; the device can be matched with an endoscope for use, and is convenient for operators to observe human tissues during operation.

Description

Fistula tract treatment closing device

Technical Field

The invention relates to the field of medical instruments, in particular to a fistula tract treatment closing device.

Background

The patent with publication number CN113243960A discloses a minimally invasive anal fistula therapeutic apparatus for conveying an implant to an anal fistula internal orifice, the apparatus comprises a shell, a rotating handle is arranged at the rear end of the shell, an anastomotic mechanism used for contacting human tissues is arranged at the front end of the shell, a transmission mechanism is arranged in the shell, the transmission mechanism comprises a transmission straight shaft linked with the rotating handle, a transmission square shaft is arranged at the end part of the transmission straight shaft, a feeding mechanism is arranged in the anastomotic mechanism, the feeding mechanism comprises a conveying tool bit used for matching the implant and a connecting column connected to the rear end of the conveying tool bit, the connecting column is provided with a quadrangular clamping groove, the transmission square shaft stretches into the clamping groove to realize linkage with the feeding mechanism, and when the handle rotates during rotation, the transmission straight shaft moves forwards and rotates, so that the conveying tool bit is driven to advance and rotate, and the implant is conveyed into the human anal fistula internal orifice tissues.

In the scheme, the transmission mechanism comprises a solid transmission straight shaft and a transmission square shaft, so that the affected part is difficult to observe in fistula treatment operations such as fistula treatment in the nose or anal fistula treatment operations, the condition of inconvenient operation exists, and the requirement on operators is high; meanwhile, in order to realize multiple use of the instrument, the connecting column at the rear end of the cutter head is directly inserted and matched on the transmission square shaft, a gap exists between the quadrangular clamping groove of the connecting column and the transmission square shaft, the cutter head can be unstable to rotate, the cutter head can move back and forth relative to the transmission square shaft, and the implantation effect is difficult to guarantee.

Disclosure of Invention

The invention aims to provide a fistula tract treatment closing device which can ensure the use stability of a conveying tool bit when in use, can improve the implantation effect, can be matched with an endoscope for use and can be repeatedly used.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a fistula way treatment closing device, includes the casing, the casing rear end is equipped with operating handle, the casing front end is equipped with the fixed pipe that extends forward, fixed intraductal cooperation has the linkage piece, the linkage piece rear end with operating handle linkage, the linkage piece front end is equipped with the transport tool bit that is used for the cooperation implant, operating handle and linkage piece all are equipped with the first passageway that supplies the mirror body of endoscope to pass through, carry the tool bit cavity setting and have the second passageway that runs through from beginning to end, the linkage piece front end with carry the tool bit rear end through screw-thread fit structure can dismantle fixedly and make first passageway and second passageway link up.

The conveying tool bit and the linkage piece are fixed together in a threaded fit mode, so that the conveying tool bit and the linkage piece are integrated, torque transmission is facilitated, the conveying tool bit can be more stable in the rotating and forward moving processes, and the conveying tool bit is prevented from moving or swaying relative to the linkage piece, so that the implantation effect of an implant is ensured. Meanwhile, the conveying tool bit and the linkage piece are detachably fixed, so that the conveying tool bit and the implants on the conveying tool bit can be conveniently replaced, the device can be used for implanting a plurality of implants in one operation, the recycling effect of the device is improved, and the treatment cost of the operation is reduced.

The operation handle and the linkage piece of the invention are both provided with the first channel for the endoscope body of the endoscope to pass through, the conveying cutter head is provided with the second channel which can be communicated with the first channel, and the front end of the endoscope body of the endoscope can extend into the second channel, thereby being convenient for operators to observe human tissues during operation, further ensuring the operation effect and reducing the operation requirement on operators.

Preferably, a cover shell is coaxially fixed at the first channel of the operating handle in a rotating manner, the cover shell is provided with a through hole penetrating through to allow the endoscope body of the endoscope to pass through, the cover shell is movably connected with a fixing piece, and one end of the fixing piece extends into or is separated from the through hole.

Through removing the mounting on the lid shell to make mounting tip stretch into in the through-hole, make the mounting press from both sides the rubber skin of mirror body tightly, avoid the mirror body to slide back and forth in first passageway, thereby guarantee the stability in use when performing the operation.

Preferably, the cover shell is located at the rear end of the operating handle, the cover shell is provided with a laterally extending matching groove, the inner section of the matching groove is communicated with the through hole, the matching groove penetrates through the side wall of the cover shell, the fixing piece is rotationally fixed at the matching groove, the rotation axis of the fixing piece deviates from the through hole, and the outer end of the fixing piece extends to the outer side of the periphery of the cover shell.

The arrangement enables the fixing piece to clamp the rubber outer layer of the mirror body in a swinging mode, so that the mirror body can be fixed more conveniently, and an operator can realize swinging of the fixing piece only by poking and pressing the outer end of the fixing piece with fingers. When the fixing piece clamps the endoscope body, the elastic force of the rubber outer layer of the endoscope body also acts on the fixing piece so as to realize the relative fixation between the fixing piece and the endoscope body and ensure the normal use of the endoscope.

Preferably, the shell is internally provided with a matching cavity, the matching cavity is internally provided with a matching part, the matching part is always positioned in the matching cavity, the matching part is sleeved on the linkage part, a linkage groove matched with each other and a linkage protrusion extending into the linkage groove are arranged between the circumferential inner wall of the matching part and the circumferential outer wall of the linkage part, the extending direction of the linkage protrusion is parallel to the first channel axis of the linkage part, the matching part and the front section of the matching cavity are provided with a one-way meshing structure matched with each other, the linkage part is provided with a first front limiting block and a first rear limiting block which are respectively contacted with the front end surface and the rear end surface of the matching part, and the linkage part moves back and forth to enable the first front limiting block or the first rear limiting block to enter the matching cavity.

When the linkage piece moves forwards, the matching piece moves from the rear section of the matching cavity to the front section of the matching cavity, the matching piece is not meshed, and the matching piece can rotate at the front section of the matching cavity; when the linkage element is completely implanted and retreated, the rotation of the matching element is limited through the unidirectional engagement of the matching element, and along with the continued retreating of the linkage element, the first front limiting block on the linkage element can push the matching element to move backwards so as to be separated from the front section of the matching cavity.

The front and rear cavity walls, the first front limiting block and the first rear limiting block of the matching cavity are used for limiting the front and rear positions of the matching piece so as to prevent the matching piece from being separated from the matching cavity and determine the position of the matching piece, and therefore separation between the linkage piece and the matching piece is facilitated. The one-way meshing structure is used for pushing the matching piece to the rear section of the matching cavity when the linkage piece retreats, so that the retreating of the linkage piece can be ensured, and the device is convenient for reuse. The contact between the first rear limiting block and the matching piece and the limit of the front cavity wall of the matching cavity are used for reminding an operator of realizing complete implantation of the implant.

Preferably, the one-way engagement structure comprises an inner gear ring structure arranged on the inner wall of the front section of the matching cavity and a pawl bulge arranged at the outer edge of the matching piece and used for one-way engagement with the inner gear ring structure.

The engagement with the ring gear structure is achieved by detent projections of detent pattern, thereby restricting rotation of the engagement member. The arrangement enables the structure of the matching piece to be simpler and more stable.

Preferably, the circumferential outer edge of the matching piece is circular, a plurality of notches which are arranged in a central symmetry mode are arranged at the circumferential outer edge of the matching piece, and each notch is internally provided with one pawl bulge.

The outer edge of the matching piece is circular, so that the outer wall of the matching piece can be in clearance fit or contact sliding with the inner edge of the annular gear structure, and the stability of the matching piece in use is further improved.

Preferably, the front end of the linkage piece is provided with a linkage part extending towards the outer side in the circumferential direction, the inner diameter of the linkage part is larger than the inner diameter of a first channel at the position where the linkage piece deviates from the front end, the middle part of the rear end of the conveying tool bit is provided with an extension part extending backwards, and the circumferential inner wall of the linkage part is in threaded fit with the circumferential outer wall of the extension part.

By bringing the rear end face of the extension portion into contact with the stepped face formed at the interlocking portion or bringing the end face of the conveying blade at the position deviated from the extension portion into contact with the front end face of the interlocking portion, the conveying cutter head is ensured to be fixed in place, and the conveying cutter head can be prevented from being excessively assembled.

Preferably, the sliding sleeve outside the linkage member is provided with a condom, a limiting structure for limiting the rotation of the condom relative to the linkage member is arranged between the linkage member and the condom, the front end of the condom stretches into the shell, the shell and the condom are provided with a limiting groove and a limiting bulge which are matched with each other, and the condom moves back and forth along the linkage member so that the limiting bulge stretches into the limiting groove or is separated from the limiting groove.

The condom is arranged to prevent the operating handle of the instrument from being operated by mistake, so that the operating handle is prevented from rotating under the condition that the front end of the fixed tube is not contacted with human tissues. When the limiting bulge is positioned in the limiting groove, the linkage piece is locked with the shell, and when the limiting bulge is separated from the limiting groove, the safety locking between the linkage piece and the shell is released.

Preferably, the operating handle forms a yielding space with a forward opening, a plurality of forward penetrating front positioning grooves are formed in the side wall of the front end of the yielding space, rear positioning grooves corresponding to the front positioning grooves are formed in the side wall of the rear end of the yielding space, the rear end of the condom is positioned in the yielding space, the condom is provided with positioning protrusions extending to the circumferential side, and when the limiting protrusions are positioned in the limiting grooves, the positioning protrusions are positioned in the front positioning grooves; when the positioning bulge is positioned in the rear positioning groove, the limiting bulge is separated from the limiting groove.

The rear end of the condom can completely enter the abdication space in a mode of elastically deforming the positioning bulge, so that the limiting bulge is separated from the limiting groove; and a certain force is applied to the condom to realize the movement of the condom. The front and rear positioning grooves are arranged to position the front and rear positions of the condom, so that the condom is prevented from sliding front and rear when the device is used.

Preferably, the positioning projection has a rear guide slope for contacting with the front positioning groove wall and a front guide slope for contacting with the rear positioning groove wall.

The front and rear guide inclined planes are arranged on the positioning bulge so as to facilitate the positioning bulge to be separated from the front and rear positioning grooves, thereby facilitating the use and operation of the instrument.

The device can improve the fixing stability of the conveying tool bit, and can reduce the possibility of shaking of the conveying tool bit in the moving process so as to ensure the effect of implantation operation; the device can be matched with an endoscope for use, so that an operator can observe human tissues during operation; the device can be repeatedly used for a plurality of times, can implant a plurality of implants in one operation, and can reduce the operation cost.

Drawings

FIG. 1 is a cross-sectional view of the instrument of the present invention when not in use.

Fig. 2 is a cross-sectional view of the linkage of the present invention as it is advanced during use.

Fig. 3 is a cross-sectional view of the linkage member in use of the instrument of the present invention, retracted.

FIG. 4 is a cross-sectional view of the linkage of the present invention in use with the scope retracted in place.

Fig. 5 is a schematic view of a structure at the front end of a stationary tube of the apparatus of the present invention.

Fig. 6 is a schematic view of a configuration of the mating cavity of the instrument of the present invention in use.

Fig. 7 is a cross-sectional view of the mating cavity of the instrument of the present invention in use.

Fig. 8 is a schematic view of a construction at the operating handle of the instrument of the present invention.

Fig. 9 is a schematic view of a structure of the present invention at the position of the limit protrusion and the limit groove.

Detailed Description

The invention is further described below with reference to the drawings and specific embodiments.

As shown in fig. 1 to 4, this embodiment discloses a fistula treatment closing device, which comprises a housing 1, the casing rear end is equipped with operating handle 2, the casing 1 front end is equipped with the fixed pipe 3 that extends forward, fixed pipe 3 internal fit has a linkage 4, linkage 4 rear end is fixed with operating handle 2, linkage 4 front end is equipped with and is used for cooperating the delivery tool bit 200 of implant 100, operating handle 2 and linkage 4 all are equipped with the first passageway 301 that supplies endoscope's mirror 300 to pass through, delivery tool bit 200 cavity sets up and has the second passageway 302 that runs through from front to back, the front end of linkage 4 and delivery tool bit 200 rear end pass through screw-thread fit structure and can dismantle fixedly and make first passageway 301 and second passageway 302 link up.

Wherein, the linkage 4 includes rotary section 40, is equipped with screw portion 10 in the casing 1, and rotary section 40 circumference outer wall and screw portion 10 circumference inner wall are equipped with the screw thread revolution mechanic that mutually supports, through making operating handle 2 just reverse to drive linkage 4 rotation and forward or backward movement. Wherein the linkage 4 is made of metal, and the front section of the linkage 4 comprises a serpentine tube section so as to move at the curved section 31 of the fixed tube 3.

As shown in fig. 1 and 5, the front end of the linkage member 4 is provided with a linkage part 44 extending to the outer side in the circumferential direction, the inner diameter of the linkage part 44 is smaller than the outer diameter of the conveying tool bit 200, the middle part of the rear end of the conveying tool bit 200 is provided with an extension part 201 extending backwards, the circumferential inner wall of the linkage part 44 is provided with an internal thread structure, and the circumferential outer wall of the extension part 201 is provided with an external thread structure matched with the internal thread structure. The front end of the fixing tube 3 of this embodiment extends to the circumferential outer side to form a contact portion 32, the linkage portion 44 is slidably fitted in the contact portion 32, the inner diameter of the fixing tube 3 deviating from the contact portion 32 is smaller than the inner diameter of the contact portion 32, and the front end surface of the contact portion 32 is provided with a plurality of contact protrusions 33 which are annularly and uniformly arranged at intervals for contacting with human tissues.

As shown in fig. 1 and 8, a bearing 21 is fixed in the first channel of the operating handle 2, the first channel of the operating handle 2 into which the front end of the cover shell 22 extends is fixed with the inner ring of the bearing 21, the rear end of the cover shell 22 is located at the rear side of the operating handle 2, a through hole 220 through which the endoscope body 300 of the endoscope passes is formed in the middle of the cover shell 22, a fixing piece 221 is movably connected to the rear end of the cover shell 22, and the fixing piece 221 moves so that the inner end of the fixing piece 221 extends into the through hole 220 or is separated from the through hole 220. The rear end of the cover shell 22 is provided with a laterally extending matching groove 222, the inner end of the matching groove 222 is communicated with the through hole 220, the outer end of the matching groove 222 penetrates through the side wall of the rear end of the cover shell 22, the fixing piece 221 is rotationally fixed at the matching groove 222, the rotation axis of the fixing piece 221 deviates from the through hole 220, and the outer end of the fixing piece 221 extends to the outer side of the periphery of the cover shell 22.

As shown in fig. 1, 6 and 7, a front limiting block 11 and a rear limiting block 12 are axially spaced from front to back in the casing 1, a matching cavity is formed between the front limiting block 11 and the rear limiting block 12, a front limiting block 41 and a rear limiting block 42 are spaced from front to back on the linkage member 4, a through hole for the front limiting block 41 to pass through is formed in the front limiting block 11, a through hole for the rear limiting block 42 to pass through is formed in the rear limiting block 12, the matching member 5 is always located in the matching cavity, and the matching member 5 is always located between the front limiting block 41 and the rear limiting block 42.

Wherein, the cooperation piece 5 cover is established on the linkage piece 4, and cooperation piece 5 circumference inner wall department equipartition has two at least front and back to run through the linkage groove of cooperation piece terminal surface, equipartition has on the linkage piece 4 outer wall with linkage groove one-to-one's linkage protruding 43, the protruding 43 front end thickness of linkage (along the radial distance of linkage piece) diminishes from back to front gradually, the protruding 43 rear end thickness of linkage diminishes from front to back gradually, the extending direction of the protruding 43 of linkage is parallel with the extending direction of the part that linkage piece 4 had the protruding 43 department of linkage.

The matching piece 5 and the front section of the matching cavity are provided with a one-way engagement structure which is matched with each other, and the one-way engagement structure comprises an inner gear ring structure 13 arranged on the inner wall of the front section of the matching cavity and a pawl bulge 51 which is arranged at the outer edge of the matching piece 5 and is used for being in one-way engagement with the inner gear ring structure 13. The circumferential outer edge of the matching piece 5 is circular, at least three notches 52 which are arranged in a central symmetry way with the self axis as the center are arranged at the circumferential outer edge of the matching piece 5, and a pawl bulge 51 is arranged in each notch 52.

As shown in fig. 1, 6 and 7, the linkage 4 includes a linkage front section 401 and a linkage rear section 402, a first front limiting block 41 is disposed on the linkage front section 401, a first rear limiting block 42 is disposed on the linkage rear section 402, the front end of the linkage front section 401 is screwed with the conveying tool bit 200, a serpentine pipe section is disposed at the front of the linkage front section 401, and the rear end of the linkage rear section 402 is fixed with the operating handle 2. The front section 401 of the linkage member and the rear section 402 of the linkage member can be fixed together by adopting a plurality of modes such as thread fixing, fastening piece fixing and the like, the rear end of the front section 401 of the linkage member in this embodiment is provided with a sleeve part 403, the sleeve part 403 is sleeved outside the front end of the rear section 402 of the linkage member, the sleeve part 403 and the front section 401 of the linkage member can be welded and fixed or integrally formed, the front ends of the sleeve part 403 and the rear section 402 of the linkage member can be fixed by thread fixing or fastening piece fixing, and the rear end of the sleeve part 403 in this embodiment forms a first front limiting block 41.

As shown in fig. 1, 8 and 9, the sliding sleeve outside the rear section 402 of the linkage member is provided with a condom 6, a limiting structure for limiting the rotation of the condom 6 relative to the linkage member 4 is arranged between the rear section 402 of the linkage member and the condom 6, the front end of the condom 6 stretches into the shell 1, two limiting protrusions 14 which are oppositely arranged are arranged in the shell, two limiting grooves 61 which are oppositely arranged are arranged at the front end of the condom 6, the limiting grooves 61 penetrate through the inner wall and the outer wall of the condom 6 and penetrate through the condom forwards, and the condom 6 moves forwards and backwards along the linkage member 4 so that the limiting protrusions 14 enter the limiting grooves 61 or are separated from the limiting grooves 61.

The rear end of the linkage piece 4 stretches into the operating handle 2 and is coaxially linked with the operating handle 2 and is fastened and fixed, the operating handle 2 forms a yielding space 20 which is open forwards, two front positioning grooves 23 which penetrate forwards are formed in the side wall of the front end of the yielding space 20, rear positioning grooves 24 which correspond to the front positioning grooves 23 in front-rear mode are formed in the side wall of the rear end of the yielding space 20, and the front positioning grooves 23 and the rear positioning grooves 24 extend outwards in the circumferential direction. The rear end of the condom 6 is always positioned in the abdication space 20, the rear end of the condom 6 is provided with a positioning bulge 62 extending outwards along the circumferential direction, and when the limiting bulge 14 is positioned in the limiting groove 61, the positioning bulge 62 is positioned in the front positioning groove 23; when the positioning projection 62 is positioned in the rear positioning groove 24, the limit projection 14 is disengaged from the limit groove 61.

The part of the condom 6 outside the casing 1 is provided with a poking part 60 extending outwards in the circumferential direction, the poking part 60 is positioned between the operating handle 2 and the casing 1, and the side wall of the condom 6 of the embodiment outside the casing 1 is provided with an arrow mark 69 extending backwards. Wherein the positioning projection 62 has a rear guide slope for contacting with the wall of the front positioning groove 23 and a front guide slope for contacting with the wall of the rear positioning groove 24. The limiting structure comprises a guide groove 45 arranged on the side wall of the rear section 402 of the linkage member, the extending direction of the guide groove 45 is the same as that of the rear section 402 of the linkage member, and the condom 6 is provided with a sliding protrusion 63 extending into the guide groove 45.

Before fistula treatment operation such as anal fistula operation is needed, the package of the instrument of the embodiment is opened, and the instrument of the embodiment, which is preloaded with the implant and the delivery cutter head, is taken out. The anchor 221 on the cover 2 at the rear end of the instrument is then opened so that the inner end of the anchor 221 is withdrawn from the through-hole 220 of the cover 2, and the scope 300 of the endoscope is then inserted into the first channel 301 so that the front end of the scope 300 of the endoscope extends into the front section 401 of the linkage and is positioned behind the implant 100 at the delivery blade 200.

The safety is opened again, the poking part 60 of the condom 6 is pushed backwards, so that the front end of the condom 6 moves backwards, the limiting bulge 14 of the shell 1 is separated from the limiting groove 61 of the condom 6, the positioning bulge 62 is deformed to be separated from the front positioning groove 23, and along with the continued backward movement of the condom 6, the positioning bulge 62 can continue to move backwards along the yielding space 20 until the positioning bulge 62 is clamped in the rear positioning groove 24.

The front end face of the fixing tube 3 of the apparatus of this embodiment is brought into contact with the tissue to perform the surgical operation. When the operating handle 2 rotates forward, the linkage piece 4 rotates clockwise and moves forward due to the cooperation of the spiral part 10 in the shell 1 and the rotating section 40 of the linkage piece rear section 402, and at this time, the linkage piece 4 drives the linkage piece 5 to move forward and rotate synchronously due to the cooperation of the linkage bulge 43 on the linkage piece 4 and the linkage groove on the circumferential inner wall of the linkage piece 5; when the linkage member 4 moves forwards, so that the matching member 5 approaches the second front limiting block 12 on the front side of the shell 1, the matching member 5 enters the annular gear structure 13, and the matching member 5 rotates in the annular gear structure 13 without meshing; when the matching piece 5 is propped against the second front limiting block 12, the linkage piece 4 can drive the matching piece 5 to continue to rotate, and meanwhile, the linkage protrusion 43 on the linkage piece 4 gradually falls out of the linkage groove on the circumferential inner wall of the matching piece 5; as the linkage member 4 continues to rotate and move forward, the linkage protrusion 43 of the linkage member 4 is completely separated from the linkage groove of the mating member 5, and the first rear stopper 12 on the rear side of the linkage member 4 is in contact with the rear end surface of the mating member 5 (in this case, in a completely implanted state).

After the complete implantation of the implant 100 is completed, the operating handle 2 is reversely rotated to release the delivery blade 200 from the human body. The delivery blade 200 is then removed from the front end of the linkage member 4, a new delivery blade screw-threaded for a new implant pre-loaded therein is secured to the front end of the linkage member 4, and the instrument front end of the present embodiment is brought into contact with tissue, and the operating handle 2 is rotated to effect implantation of a new implant. The above-described operations are repeated to effect implantation of a plurality of different implants to effect reuse of the instrument of the present embodiment.

Wherein, in the process of resetting the linkage member 4, the linkage protrusion 41 of the linkage member 4 will contact with the front end surface of the mating member 5, and the mating member 5 will not rotate because the pawl protrusion 51 of the mating member 5 is mated with the teeth on the ring gear structure 13 at this time, and the linkage protrusion 41 of the linkage member 4 will push the mating member 5 to move backward; when the matching piece 5 is separated from the teeth of the annular gear structure 13 and the rear end surface of the matching piece 5 is gradually close to the second rear limiting block 12, the linkage protrusion 41 on the linkage piece 4 is gradually aligned with the linkage groove of the matching piece 5 along with the continuous anticlockwise rotation of the linkage piece 4; along with the continuous backward and counterclockwise rotation of the linkage member 4, the linkage protrusion 41 on the linkage member 4 extends into the linkage groove of the mating member 5 and drives the mating member 5 to rotate until the mating member 5 is limited between the first front limiting block 41 of the linkage member 4 and the second rear limiting block 12 of the housing 1.

The device can improve the fixing stability of the conveying tool bit, and can reduce the possibility of shaking of the conveying tool bit in the moving process so as to ensure the implantation operation effect; the instrument can be matched with an endoscope for use, so that an operator can observe human tissues during operation; the device of the embodiment can be repeatedly used for a plurality of times, can implant a plurality of implants in one operation, and can reduce the operation cost.

Claims (10)

1. The utility model provides a fistula way treatment closing device, includes the casing, the casing rear end is equipped with operating handle, the casing front end is equipped with the fixed pipe that extends forward, fixed intraductal cooperation has the linkage piece, the linkage piece rear end with operating handle linkage, the linkage piece front end is equipped with the transport tool bit that is used for the cooperation implant, its characterized in that: the operation handle and the linkage piece are both provided with a first channel for the endoscope body of the endoscope to pass through, the conveying tool bit is arranged in a hollow mode and is provided with a second channel penetrating through the front and the back of the conveying tool bit, and the front end of the linkage piece and the rear end of the conveying tool bit are detachably fixed through a threaded matching structure and enable the first channel to penetrate through the second channel.

2. The fistula tract treatment closure device of claim 1, wherein: the first channel of the operating handle is coaxially fixed with a cover shell in a rotating manner, the cover shell is provided with a through hole which penetrates through to allow a scope body of the endoscope to pass through, the cover shell is movably connected with a fixing piece, and one end of the fixing piece extends into the through hole or is separated from the through hole.

3. The fistula tract treatment closure device of claim 2, wherein: the lid shell is located the operating handle rear end, the lid shell has the cooperation groove of side direction extension, cooperation inslot section with the through-hole intercommunication, the cooperation groove runs through lid shell lateral wall, the mounting rotate be fixed in cooperation groove department, the axis of rotation of mounting is skew the through-hole, the mounting outer end extends to lid shell circumference outside.

4. The fistula tract treatment closure device of claim 1, wherein: the shell is internally provided with a matching cavity, a matching part is arranged in the matching cavity, the matching part is always positioned in the matching cavity, the matching part is sleeved on the linkage part, a linkage groove matched with each other and a linkage protrusion extending into the linkage groove are arranged between the circumferential inner wall of the matching part and the circumferential outer wall of the linkage part, the extending direction of the linkage protrusion is parallel to the axis of a first channel of the linkage part, a one-way meshing structure matched with each other is arranged at the front section of the matching part, a first front limiting block and a first rear limiting block which are used for being respectively contacted with the front end face and the rear end face of the matching part are arranged on the linkage part, and the linkage part moves back and forth so that the first front limiting block or the first rear limiting block enters and exits the matching cavity.

5. The fistula tract treatment closure device of claim 4, wherein: the one-way engagement structure comprises an annular gear structure arranged on the inner wall of the front section of the matching cavity and pawl bulges arranged at the outer edge of the matching piece and used for one-way engagement with the annular gear structure.

6. The fistula tract treatment closure device of claim 5, wherein: the circumferential outer edge of the matching piece is circular, a plurality of notches which are arranged in a central symmetry mode are arranged at the circumferential outer edge of the matching piece, and each notch is internally provided with one pawl bulge.

7. The fistula tract treatment closure device of claim 1, wherein: the front end of the linkage piece is provided with a linkage part extending outwards in the circumferential direction, the inner diameter of the linkage part is larger than the inner diameter of a first channel at the position of the linkage piece deviating from the front end, the middle part of the rear end of the conveying tool bit is provided with an extension part extending backwards, and the circumferential inner wall of the linkage part is in threaded fit with the circumferential outer wall of the extension part.

8. A fistula treatment closure device of claim 1 or 2 or 3, wherein: the movable sleeve is characterized in that a condom is arranged on the outer sliding sleeve of the movable member, a limiting structure used for limiting the movable sleeve to rotate relative to the movable member is arranged between the movable member and the condom, the front end of the condom stretches into the shell, a limiting groove and a limiting protrusion which are matched with each other are arranged between the shell and the condom, and the condom moves back and forth along the movable member so that the limiting protrusion enters the limiting groove or is separated from the limiting groove.

9. The fistula tract treatment closure device of claim 8, wherein: the operation handle forms a forward opening yielding space, a plurality of forward penetrating front positioning grooves are formed in the front side wall of the yielding space, rear positioning grooves corresponding to the front positioning grooves are formed in the rear side wall of the yielding space, the rear end of the condom is positioned in the yielding space, the condom is provided with positioning protrusions extending to the circumferential side, and when the limiting protrusions are positioned in the limiting grooves, the positioning protrusions are positioned in the front positioning grooves; when the positioning bulge is positioned in the rear positioning groove, the limiting bulge is separated from the limiting groove.

10. The fistula tract treatment closure device of claim 9, wherein: the positioning protrusion is provided with a rear guide inclined surface for contacting with the groove wall of the front positioning groove and a front guide inclined surface for contacting with the groove wall of the rear positioning groove.