CN112274220B

CN112274220B - Polyp snare for endoscopic surgery

Info

Publication number: CN112274220B
Application number: CN202011068358.XA
Authority: CN
Inventors: 周铁君; 孙木此
Original assignee: Suzhou Frankenman Medical Equipment Co Ltd
Current assignee: Suzhou Frankenman Medical Equipment Co Ltd
Priority date: 2020-10-08
Filing date: 2020-10-08
Publication date: 2021-07-27
Anticipated expiration: 2040-10-08
Also published as: CN112274220A

Abstract

The invention discloses a polyp snare for endoscopic surgery, which comprises: the cleaning device comprises a shell, a cleaning mechanism and a cleaning mechanism, wherein a driving mechanism is arranged in the shell and connected with a snare mechanism, and one side of the driving mechanism is connected with the cleaning mechanism; the drive mechanism is used for pushing out the snare mechanism, the snare mechanism is used for fixing and cutting off polyps, the cleaning mechanism is used for washing a cutting position, and the drive mechanism comprises: the polyp snare for endoscopic surgery is simple in operation and convenient to use, and can drive a snare mechanism and a cleaning mechanism simultaneously without electricity, and sharp polyp snare for endoscopic surgery is cut.

Description

Polyp snare for endoscopic surgery

Technical Field

The invention relates to the technical field of medical instruments, in particular to a polyp snare for endoscopic surgery.

Background

Endoscopic Mucosal Resection (EMR) refers to a technique of injecting a drug into the submucosa of a lesion (e.g., sessile polyp, flat or superficial sunken polyp, leiomyoma, esophageal, gastric, colon early cancer, etc.) to form a liquid cushion and then cutting a large block of mucosal tissue. Its advantage is that the focus of infection can be cut off under endoscope without operation.

However, existing snares suffer from the following drawbacks: (1) when the snare is used, the snare needs to be operated by electric power and connected with an electric wire, so that the snare is inconvenient to use; (2) when the traditional snare is used for cutting, the snare is not sharp enough, the cutting resistance is large, and the cutting is inconvenient; (3) the snare has a single structure, and cannot utilize the driving mechanism of the snare to simultaneously operate other structures.

Disclosure of Invention

The invention aims to provide a polyp snare for endoscopic surgery, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a polyp snare for endoscopic surgery comprising: the cleaning device comprises a shell, a cleaning mechanism and a cleaning mechanism, wherein a driving mechanism is arranged in the shell and connected with a snare mechanism, and one side of the driving mechanism is connected with the cleaning mechanism;

the drive mechanism is used for pushing out the snare mechanism, the snare mechanism is used for fixing and cutting off polyps, and the cleaning mechanism is used for flushing cutting positions.

Further, the driving mechanism includes: pivot, gear, push rod, tooth, telescopic link, first finger ring cover, pull ring, reset spring, straight slide bar, the pivot install in the middle of the bottom of casing, gear revolve cup joint in the pivot, tooth install in one side of push rod, tooth with gear meshing meets, first finger ring cover with the one end fixed connection of push rod, the arc lateral wall of first finger ring cover with the one end fixed connection of push rod, the pulling ring is arranged in the first finger ring cover, the one end of telescopic link is passed the inside of push rod with the lateral wall fixed connection of pull ring, reset spring cup joint in the telescopic link is located one of first finger ring cover is served, the push rod slide with straight slide bar sliding connection.

Furthermore, a concave part is arranged in the middle of the push rod, the teeth are arranged on the side wall of the concave part arranged on the push rod, the concave part is sleeved on the straight slide rod in a sliding mode, and the pulling ring is in a semicircular shape.

Further, the snare mechanism includes: circle lantern ring, arc recess, cutting blade, cutting pad, cut groove, the arc recess seted up in circle lantern ring's one side inner wall, cutting blade embedded install in the arc recess, the cutting pad install in circle lantern ring's opposite side, cut the groove set up in cut on the cutting pad.

Further, the position, the size and the thickness of the cutting pad are matched with those of the arc-shaped groove, and the position, the size and the thickness of the cutting blade are matched with those of the cutting groove.

Further, the cleaning mechanism includes: the cleaning device comprises a U-shaped sliding rod, a rack, a cleaning box, a piston rod, a piston plate and a flushing pipe, wherein the rack is slidably mounted on the U-shaped sliding rod, one end of the piston rod penetrates through the side wall of the cleaning box and is fixedly connected with the side wall of the piston plate, the other end of the piston rod is fixedly connected with the side wall of the rack, the flushing pipe is connected to one side of the cleaning box in a penetrating mode, and the rack is meshed with the gear.

Furthermore, the U-shaped slide bar is fixedly arranged on the inner wall of one side of the shell, and the cleaning box is arranged on one side of the U-shaped slide bar.

Furthermore, a first notch and a second notch are respectively formed in side plates on two sides of the shell, the first notch and the second notch are arc-shaped notches, a cavity is formed in one end, close to the second notch, of the push rod, the telescopic rod is located at one end in the cavity and fixedly connected with the ring sleeve, two ends of the push rod are respectively located on the first notch and the second notch, pulleys are symmetrically installed on the position of the first notch, two sides, close to one end of the first notch, of the rod body of the push rod are connected between the two pulleys in a clamped mode, and second ring sleeves are installed on outer walls of two sides, close to the position of the first ring sleeve, of the shell.

Furthermore, the other side of the cleaning box is connected with a water inlet pipe in a through mode, a through hole is formed in the outer side wall of one end, close to the cavity, of the push rod, a pipe outlet is formed in one side of the through hole, the flushing pipe is an L-shaped pipe, two ends of a transverse pipe of the flushing pipe are respectively connected with the cleaning box and the cavity in a through mode, and one end of a vertical pipe of the flushing pipe is located on the outer side of the pipe outlet.

Further, the ferrule ring and the cutting blades are made of elastic metal materials, and the cutting pads are made of rubber pads.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, the driving mechanism is arranged, so that a user can extend the push rod through the arc-shaped notch by the first finger ring sleeve, the push rod can move on the straight sliding rod, and the fixedly connected snare mechanism is pushed out;

(2) the invention is provided with the cleaning mechanism, under the movement of the push rod arranged on the driving mechanism, the gear in meshed connection is driven to rotate on the rotating shaft, the gear drives the rack in meshed connection to move on the U-shaped sliding rod, the piston plate fixedly connected with the piston rod can be driven to move in the cleaning box by the movement of the rack, and each time the driving mechanism drives the snare mechanism to advance, the gear drives the rack to retreat, the rack drives the piston plate fixedly connected with the piston rod to move in the cleaning box, when the driving mechanism drives the snare mechanism to retreat, the gear drives the rack to move forward on the U-shaped slide rod, the rack moves forward to push the piston plate fixedly connected with the piston rod to move forward, and then the cleaning liquid in the cleaning tank is extruded out, flushing the cutting position, so that the wound part can be flushed by pushing the cleaning mechanism once the polyp is cut and the snare mechanism is retracted;

(3) according to the polypus cutting device, the telescopic rod is arranged through the sleeving mechanism, the telescopic rod is pushed through the pulling ring, the sleeving ring extends out of the push rod through the through hole, the sleeving ring is sleeved and positioned on the polypus position, the pulling ring is loosened after positioning is finished, the telescopic rod is rapidly rebounded under the action of the reset spring, the sleeving ring is shrunk inwards the cavity through the through hole, then two sides of the sleeving ring are stressed and extruded, the cutting mat is clamped into the arc-shaped groove, and the polypus is cut through the cutting blade;

(4) the mechanism of the invention is operated by a mechanical structure, does not need to be connected with an electric facility, is more convenient to use and carry, and the driving mechanism can simultaneously realize the snaring pushing-out mechanism and the cleaning driving mechanism;

(5) the push rod is provided with the pulley, so that the push rod can be pushed out and retracted more smoothly under the action of the pulley when being pushed out and retracted.

Drawings

FIG. 1 is a schematic view of a front view of an interior structure according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a partial structure of the temple region of the subject of FIG. 1;

FIG. 3 is a front cross-sectional structural view of the embodiment of FIG. 1;

FIG. 4 is a schematic structural diagram of a front view of the embodiment of FIG. 1;

FIG. 5 is a schematic structural view of a driving mechanism in the embodiment of FIG. 1;

FIG. 6 is a schematic structural view of the cleaning mechanism in the embodiment of FIG. 1;

FIG. 7 is a schematic view of the first finger loop of the embodiment of FIG. 1;

FIG. 8 is a schematic diagram of the location of the cavity in the embodiment of FIG. 1;

FIG. 9 is a schematic cross-sectional view of the snare loop of the embodiment of FIG. 1;

fig. 10 is a schematic view of the cutting pad and cutting blade configuration of the embodiment of fig. 1.

Reference numerals: 1. a housing; 101. a first notch; 102. a second notch; 2. a drive mechanism; 21. a rotating shaft; 22. a gear; 23. a push rod; 231. a recessed portion; 232. a cavity; 24. teeth; 25. a telescopic rod; 26. a first finger ring sleeve; 27. pulling the ring; 28. a return spring; 29. a straight sliding rod; 3. a snare mechanism; 31. a collar ring; 32. an arc-shaped groove; 33. a cutting blade; 34. cutting the mat; 35. cutting the groove; 4. a cleaning mechanism; 41. a U-shaped slide bar; 42. a rack; 43. a cleaning tank; 44. a piston rod; 45. a piston plate; 46. a flush tube; 5. a pulley; 6. a through hole; 7. a water inlet pipe; 8. an outlet pipe orifice; 9. and a second finger ring sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-10 together, a polyp snare for endoscopic surgery includes: the cleaning device comprises a shell 1, wherein a driving mechanism 2 is installed in the shell 1, the driving mechanism 2 is connected with a snare mechanism 3, and one side of the driving mechanism 2 is connected with a cleaning mechanism 4;

the driving mechanism 2 is used for pushing out the snaring mechanism 3, the snaring mechanism 3 is used for fixing polyp and cutting off the polyp, and the cleaning mechanism 4 is used for washing the cutting position.

The drive mechanism 2 includes: the rotating shaft 21, the gear 22, the push rod 23, the teeth 24, the telescopic rod 25, the first finger ring sleeve 26, the pulling ring 27, the return spring 28 and the straight sliding rod 29, wherein the rotating shaft 21 is installed in the middle of the bottom of the shell 1, the gear 22 is rotatably sleeved on the rotating shaft 21, the teeth 24 are installed on one side of the push rod 23, the teeth 24 are meshed with the gear 22, the first finger ring sleeve 26 is fixedly connected with one end of the push rod 23, the arc-shaped side wall of the first finger ring sleeve 26 is fixedly connected with one end of the push rod 23, the pulling ring 27 is arranged in the first finger ring sleeve 26, one end of the telescopic rod 25 penetrates through the inside of the push rod 23 and is fixedly connected with the side wall of the pulling ring 27, the return spring 28 is sleeved on one end of the telescopic rod 25 in the first finger ring sleeve 26, the push rod 23 is slidably connected with the straight sliding rod 29, the push rod 23 is pushed out from the second notch 102 by the first finger ring sleeve 26, after the positioning is completed by the snare mechanism 3, the telescopic rod 25 is pushed out from the through hole 6 arranged on the push rod 23 by the pull ring 27, and the snare ring 31 is pushed out from the cavity 232 of the push rod 23, so that the polyp is positioned.

The middle of the push rod 23 is provided with a concave portion 231, the teeth 24 are mounted on the side wall of the concave portion 231 arranged on the push rod 23, the concave portion 231 is slidably sleeved on the straight sliding rod 29, and the pull ring 27 is semicircular, so that the teeth 24 of the concave portion 231 can drive the gear 22 to rotate on the rotating shaft 21.

The snare mechanism 3 includes: circle lantern ring 31, arc recess 32, cutting blade 33, cutting pad 34, cutting groove 35, arc recess 32 sets up circle lantern ring 31's one side inner wall, cutting blade 33 embedded install in the arc recess 32, cutting pad 34 install in circle lantern ring 31's opposite side, cutting groove 35 sets up in on the cutting pad 34, through circle lantern ring 31 atress extrusion shrink, can make cutting blade 33 card go into cuts the polyp in cutting groove 35, avoid sharpness inadequately leading to the cutting to be obstructed through the snare, cutting blade 33 is installed in arc recess 32 for thin blade embedding, makes circle lantern ring 31 can not touch the polyp when fixing a position the polyp.

The position, size and thickness of cutting pad 34 with the position, size and thickness looks adaptation of arc recess 32 makes cutting pad 34 can be embedded into in the arc recess 32, the position, size and thickness of cutting blade 33 with the position, size and thickness looks adaptation of cutting groove 35 makes cutting blade 33 can block in the cutting groove 35.

The cleaning mechanism 4 includes: the wound cleaning device comprises a U-shaped sliding rod 41, a rack 42, a cleaning box 43, a piston rod 44, a piston plate 45 and a cleaning pipe 46, wherein the rack 42 is slidably mounted on the U-shaped sliding rod 41, one end of the piston rod 44 penetrates through the side wall of the cleaning box 43 and the side wall of the piston plate 45, the other end of the piston rod 44 is fixedly connected with the side wall of the rack 42, the cleaning pipe 46 is connected to one side of the cleaning box 43 in a penetrating manner, the rack 42 is meshed with the gear 22 and can drive the piston plate 45 fixedly connected with the piston rod 44 to move in the cleaning box 43 through the movement of the rack 42, so that cleaning liquid in the cleaning box 43 is repeatedly squeezed to clean a wound part, and cleaning liquid is stored in the cleaning box 43 in a default manner.

The U-shaped sliding rod 41 is fixedly installed on the inner wall of one side of the shell 1, the cleaning box 43 is arranged on one side of the U-shaped sliding rod 41, and the cleaning mechanism 4 can be driven to work by moving the rack 42 on the U-shaped sliding rod 41.

First breach 101 and second breach 102 have been seted up respectively to the curb plate of 1 both sides of casing, first breach 101 with second breach 102 is the arc breach, push rod 23 is close to the inside cavity 232 that is equipped with of one end of second breach 102, telescopic link 25 is located one end in the cavity 232 with circle lantern ring 31 fixed connection, the both ends of push rod 23 are located respectively first breach 101 with on the second breach 102, pulley 5 is installed to the position symmetry of first breach 101, the body of rod of push rod 23 is close to the both sides joint of the one end of first breach 101 is in two between the pulley 5, casing 1 is close to second finger ring cover 9 is installed to the both sides outer wall of the position of first finger ring cover 26, and the in-process of push rod 23 round trip movement can make the release more smooth and easy through the effect of pulley 5.

The other side of the cleaning box 43 is connected with a water inlet pipe 7 in a penetrating manner, the outer side wall of one end, close to the cavity 232, of the push rod 23 is provided with a through hole 6, one side of the through hole 6 is provided with a pipe outlet 8, the flushing pipe 46 is an L-shaped pipe, two ends of a transverse pipe of the flushing pipe 46 are respectively connected with the cleaning box 43 and the cavity 232 in a penetrating manner, and one end of a vertical pipe of the flushing pipe 46 is located on the outer side of the pipe outlet 8, so that the flushing pipe 46 can be connected conveniently.

The snare loop 31, the cutting blade 33 are made of elastic metal materials, the cutting pad 34 is made of rubber pads, deformation of the snare loop 31 and the cutting blade 33 is facilitated, and the blade of the cutting blade 33 can be tightly attached to the cutting pad 34.

In conclusion, the polyp snare for endoscopic surgery provided by the invention has the advantages that when in use,

firstly, the push rod 23 is pushed out by the driving mechanism 2, two hands are sleeved into the second finger ring sleeve 9, the other finger slightly pushes the first finger ring sleeve 26, the push rod 23 fixedly connected with the first finger ring sleeve 26 can be pushed smoothly under the action of the pulley 5, the push rod 23 moves on the straight sliding rod 29, and the extension length of the push rod 23 is further adjusted;

then, through the extending movement of the push rod 23, the teeth 24 arranged on the push rod 23 drive the gear 22 in meshing connection to rotate, the gear 22 rotates to drive the rack 42 in meshing connection to move on the U-shaped slide rod 41, and the movement of the rack 42 can drive the piston plate 45 fixedly connected with the piston rod 44 to move backwards in the cleaning box 43;

then the telescopic rod 25 is pushed by the pulling ring 27, the ring sleeving ring 31 extends out of the push rod 23 through the through hole 6, the ring sleeving ring 31 performs ring sleeving positioning on the polyp position, the pulling ring 27 is loosened after positioning, the telescopic rod 25 rapidly rebounds under the action of the reset spring 28, the ring sleeving ring 31 contracts towards the cavity 232 through the through hole 6, then the two sides of the ring sleeving ring 31 are extruded under force, the cutting pad 34 is clamped into the arc-shaped groove 32, the polyp is cut through the cutting blade 33, and the pulling ring 27 can be manually pulled back for cutting;

finally, when the telescopic rod 25 is retracted, the operator pulls back the first finger ring sleeve 26, so that the teeth 24 of the concave part 231 drive the gear 22 to rotate reversely, the rack 42 further advances on the U-shaped slide rod 41, the cleaning liquid in the cleaning tank 43 is further extruded out through the piston plate 45, the wound part is cleaned through the cleaning pipe 46, and when the cleaning liquid needs to be added, the cleaning liquid can be added through the water inlet pipe 7.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A polyp snare for endoscopic surgery comprising: the cleaning device comprises a shell (1), and is characterized in that a driving mechanism (2) is installed in the shell (1), the driving mechanism (2) is connected with a snare mechanism (3), and one side of the driving mechanism (2) is connected with a cleaning mechanism (4); the driving mechanism (2) is used for pushing out the snare mechanism (3), the snare mechanism (3) is used for fixing polyp and cutting off, the cleaning mechanism (4) is used for washing a cutting position, and the driving mechanism (2) comprises: the gear-driven mechanism comprises a rotating shaft (21), a gear (22), a push rod (23), teeth (24), a telescopic rod (25), a first finger ring sleeve (26), a pulling ring (27), a reset spring (28) and a straight sliding rod (29), wherein the rotating shaft (21) is installed in the middle of the bottom of the shell (1), the gear (22) is rotatably sleeved on the rotating shaft (21), the teeth (24) are installed on one side of the push rod (23), the teeth (24) are meshed and connected with the gear (22), the first finger ring sleeve (26) is fixedly connected with one end of the push rod (23), the arc-shaped side wall of the first finger ring sleeve (26) is fixedly connected with one end of the push rod (23), the pulling ring (27) is arranged in the first finger ring sleeve (26), one end of the telescopic rod (25) penetrates through the inner portion of the push rod (23) and is fixedly connected with the side wall of the pulling ring (27), the reset spring (28) is sleeved on one end of the telescopic rod (25) positioned in the first finger ring sleeve (26), the push rod (23) is connected with the straight sliding rod (29) in a sliding manner, and the snare mechanism (3) comprises: encircle ring (31), arc recess (32), cutting blade (33), cutting pad (34), cut groove (35), arc recess (32) are seted up in one side inner wall of the ring of circling ring (31), cutting blade (33) embedded install in arc recess (32), cut pad (34) install in the opposite side of the ring of circling ring (31), cut groove (35) are seted up on cut pad (34), wiper mechanism (4) includes: u type slide bar (41), rack (42), washing case (43), piston rod (44), piston plate (45), flushing pipe (46), rack (42) slidable mounting in on U type slide bar (41), the one end of piston rod (44) pass wash the lateral wall of case (43) with the lateral wall fixed connection of piston plate (45), the other end of piston rod (44) with the lateral wall fixed connection of rack (42), flushing pipe (46) through connection in wash one side of case (43), rack (42) with gear (22) meshing meets.

2. A polyp snare according to claim 1, wherein a depression (231) is provided in the middle of the push rod (23), the teeth (24) are mounted on the side wall of the depression (231) provided in the push rod (23), the depression (231) is slidably fitted on the straight slide bar (29), and the pull ring (27) is semicircular.

3. An endoscopic polyp snare according to claim 2, wherein the position, size and thickness of the cutting pad (34) is adapted to the position, size and thickness of the arc-shaped groove (32), and the position, size and thickness of the cutting blade (33) is adapted to the position, size and thickness of the cutting slot (35).

4. A polyp snare for endoscopic surgery according to claim 3, wherein the U-shaped slide bar (41) is fixedly installed at an inner wall of one side of the housing (1), and the cleaning tank (43) is disposed at one side of the U-shaped slide bar (41).

5. A polyp snare according to claim 4, wherein a first notch (101) and a second notch (102) are formed in side plates on two sides of the shell (1) respectively, the first notch (101) and the second notch (102) are both arc-shaped notches, a cavity (232) is formed in one end, close to the second notch (102), of the push rod (23), one end, located in the cavity (232), of the telescopic rod (25) is fixedly connected with the loop ring (31), two ends of the push rod (23) are located on the first notch (101) and the second notch (102) respectively, pulleys (5) are symmetrically installed on the position of the first notch (101), two sides, close to one end of the first notch (101), of the rod body of the push rod (23) are clamped between the two pulleys (5), and second side walls of two sides, close to the position of the first loop ring (26), of the shell (1) are provided with second notches (102) A finger ring sleeve (9).

6. A polyp snare according to claim 5, wherein a water inlet tube (7) is connected to the other side of the cleaning box (43) in a penetrating manner, a through hole (6) is formed in the outer side wall of one end, close to the cavity (232), of the push rod (23), a tube outlet (8) is formed in one side of the through hole (6), the flushing tube (46) is an L-shaped tube, two ends of a transverse tube of the flushing tube (46) are respectively connected with the cleaning box (43) and the cavity (232) in a penetrating manner, and one end of a vertical tube of the flushing tube (46) is located on the outer side of the tube outlet (8).

7. A polyp snare according to claim 6, wherein the snare loop (31), the cutting blade (33) are made of a resilient metal material, and the cutting pad (34) is made of a rubber pad.