CN219578922U - Multifunctional biopsy forceps - Google Patents

Abstract

The utility model provides a multifunctional biopsy forceps, relates to the technical field of medical instruments, and solves the technical problem that the medical instruments are required to be replaced temporarily due to inaccurate measurement information. The device comprises a sleeve, a handle and a cutting assembly, wherein the handle is arranged at one end of the sleeve, an inner cavity for communicating the sleeve is formed in the handle, and the cutting assembly comprises a clamp body, a snare and a string bag. The utility model is used for performing excision operation on polyps in intestines and stomach of a patient, and in the using process, the clamp body can be adjusted first to realize excision of smaller polyps. When the volume of a polyp is large, the adjusting snare is extended out of the cannula and retracted into the cannula and effects resection of the larger polyp. Therefore, polyps with different volumes and sizes are resected through one sleeve extending out of the patient body, the problem that medical instruments are needed to be replaced temporarily due to inaccurate measurement information is solved, the time of medical operation is shortened, and uncomfortable feeling of the instruments to the patient body in the operation process of the patient is reduced.

Description

Multifunctional biopsy forceps

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a multifunctional biopsy forceps.

Background

Gastrointestinal microscopy is a commonly used clinical examination technique that involves excision of a detected polyp during the course of performing a gastrointestinal diagnostic procedure. Medical instruments that are typically used in ablation procedures typically involve a snare or biopsy forceps or the like. During operation, a snare or biopsy forceps is inserted into the patient's intestinal canal to resect the polyp.

However, the present inventors found that the prior art has at least the following technical problems: medical staff can not accurately measure the size of polyps in the diagnosis and treatment process, so that whether the snare or the biopsy forceps are needed to cut the polyps can not be accurately judged, discomfort is easily caused to a patient when the medical instruments are replaced in the diagnosis process, the serious patient can cause intestinal canal damage of the patient, and the diagnosis and treatment time is prolonged.

Disclosure of Invention

The utility model aims to provide a multifunctional biopsy forceps which solves the technical problem that in the prior art, medical instruments need to be replaced temporarily due to inaccurate measurement information _。 The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a multifunctional biopsy forceps which comprises a sleeve, a grip and a cutting assembly, wherein the grip is arranged at one end of the sleeve, an inner cavity for communicating the sleeve is formed in the grip, the cutting assembly comprises a forceps body, a traction wire and a pushing sleeve, the forceps body is arranged at one end of the sleeve far away from the grip, the grip is sleeved on the grip and is arranged in a sliding manner, the traction wire penetrates through the sleeve and the inner cavity of the grip, one end of the traction wire is fixedly connected with the pushing sleeve, the other end of the traction wire is connected with the forceps body, and the forceps body is driven to open and close by the displacement of the pushing sleeve on the grip;

the cutting assembly further comprises a pushing block, a snare and a first traction wire, the pushing block is arranged on the handle in a sliding mode, the first traction wire also penetrates through the sleeve and the inner cavity of the handle, one end of the first traction wire is fixedly connected with the pushing block, the other end of the first traction wire is fixedly connected with the snare, the snare is arranged at one end of the sleeve mounting clamp body, and the snare is driven to extend out of the sleeve to expand and retract into the sleeve to be combined through displacement of the pushing block on the handle.

Optionally, the cutting assembly further comprises a string bag, a second traction wire and a pushing handle, wherein the pushing handle is inserted into the inner cavity of the handle through one end of the side wall of the handle, the second traction wire penetrates through the sleeve and the inner cavity of the handle, one end of the second traction wire is fixedly connected with the pushing handle, the other end of the second traction wire is fixedly connected with the string bag, the string bag is arranged at one end of the sleeve, the sleeve is arranged at one end of the clamp body, and the string bag is driven to extend out of the sleeve to open and retract into the sleeve to be combined through displacement of the pushing handle on the handle.

Optionally, the net bag and the snare are symmetrically arranged at two sides of the forceps body.

Optionally, still be provided with the locating plate on the pincers body, locating plate fixed connection is on the pincers body, the spout has been seted up to the inner wall of pipe box, the locating plate slides along the length direction of pipe box and sets up in the spout.

Optionally, the opening and closing direction of the forceps body is perpendicular to the length direction of the sleeve, and the connecting line direction of the snare set point and the string bag set point is perpendicular to the opening and closing direction of the forceps body.

Optionally, the cutting assembly further comprises a positioning head and a third traction wire, the positioning head is in threaded connection with one end of the grip far away from the pliers body, the third traction wire sequentially penetrates through the sleeve and the inner cavity of the grip, one end of the third traction wire is fixedly connected with the positioning plate, and the other end of the third traction wire is fixedly connected with the positioning head.

Optionally, the sleeve is provided with a water filling port, and the sleeve is provided with a plug which is embedded and blocked in the water filling port.

Optionally, a high frequency electric knife connector for connecting the first traction wire is installed on the grip.

The preferred technical scheme of the utility model can at least have the following technical effects:

1. the clamp body and the snare are respectively arranged on the sleeve, so that in the use process, the cutting end of the clamp body can be firstly adjusted to be positioned outside the sleeve, and the clamp body is driven to open and close by pushing the displacement sleeved on the handle, so that the excision of smaller polyps is realized. When the volume of the polyp is large, the positioning plate is adjusted to drive the clamp body to shrink, so that vision obstruction is avoided. And then the pushing block is moved on the handle to drive the snare to stretch out of the sleeve and shrink into the sleeve to combine to realize the excision of larger polyps. Therefore, polyps with different volumes and sizes are resected through one sleeve extending out of the patient body, the problem that medical instruments are needed to be replaced temporarily due to inaccurate measurement information is solved, the time of medical operation is shortened, and uncomfortable feeling of the instruments to the patient body in the operation process of the patient is reduced.

2. The net bag sleeve is arranged in the sleeve, and the net bag is driven to extend out of the sleeve and shrink into the sleeve to be combined by the displacement of the pushing handle on the grip, so that the excised polyp is taken out. Further reducing the damage of medical instruments to the body of a patient caused by adding the medical instruments in the diagnosis and treatment operation process.

3. Through set up the water injection mouth of intercommunication sheathed tube on the sleeve pipe to be convenient for disinfect to intraductal injection liquid medicine of excision polyp after diagnosing, but also can be according to diagnosing the content injection normal saline of the mucus bubble of patient diagnosis and treat the position in-process, with the success rate that improves the operation.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure provided by an embodiment of the present utility model;

fig. 2 is a schematic view of an internal structure of a clamp body in a use state according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at Q;

fig. 4 is a schematic view showing the internal structure of the snare according to the embodiment of the present utility model in use;

fig. 5 is a schematic view of an internal structure of a string bag according to an embodiment of the present utility model in a use state.

Reference numerals illustrate: 100. a sleeve; 110. a water filling port; 120. a plug; 130. a chute; 200. a grip; 210. a positioning head; 211. a caulking groove; 212. a positioning ball; 220. pushing the sleeve; 230. a positioning seat; 240. pushing the handle; 250. a pushing block; 260. a high frequency electric knife connector; 270. the second limit through groove; 280. the first limiting through groove; 300. a cutting assembly; 310. a second traction wire; 320. a traction wire; 330. a third traction wire; 340. a first traction wire; 350. a positioning plate; 360. an elastic strip; 370. a clamp body; 371. an active clamp; 372. a driven clamp; 380. a snare; 390. a net bag.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

In the description of the present utility model, it is to be noted that, unless otherwise indicated, the meaning of "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., refer to an orientation or positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

The utility model is described in further detail below with reference to fig. 1-5, and embodiments of the utility model disclose a multifunctional biopsy forceps.

Referring to fig. 1 and 2, a multifunctional biopsy forceps includes a cannula 100, a grip 200, and a cutting assembly 300. One end of the sleeve 100 is fixedly connected to the grip 200, and the other end of the sleeve 100 extends away from the grip 200. The cutting assembly 300 is disposed within the grip 200 and extends from the interior of the sleeve 100.

In the embodiment of the present utility model, the sleeve 100 is made of elastic plastic material, and meets the medical standard, and the interior of the sleeve 100 is hollow and is arranged through along two ends of the sleeve 100 in the length direction. The grip 200 is made of hard plastic and meets medical standards. The grip 200 is stepped along the length direction thereof, that is, one end diameter of the grip 200 is smaller than the other end diameter, so that the sleeve 100 is connected with each other by being sleeved at the smaller end of the grip 200, and the grip 200 and the sleeve 100 are in interference arrangement. The interior of the grip 200 is provided with an inner cavity of a can at two ends, and when the sleeve 100 is fixedly connected with the grip 200, the inner cavity of the grip 200 is communicated with the sleeve 100.

Referring to fig. 2 and 3, the cutting assembly 300 includes a clamp body 370, a pulling wire 320 and a pushing sleeve 220, wherein the pushing sleeve 220 is sleeved on the grip 200 in a collar shape and is slidably disposed along the length direction of the grip 200. The handle 200 is provided with a first limiting through groove 280 along the radial direction, and the first limiting through groove 280 is communicated with the inner cavity of the handle 200. The inner wall of the pushing sleeve 220 is fixedly connected with a limiting rod along the radial direction, and the limiting rod passes through the first limiting through groove 280 and is arranged in a sliding manner along the length direction of the grip 200 during operation.

The clamp body 370 comprises a driving clamp 371, a driven clamp 372 and a positioning shaft, wherein the driving clamp 371 and the driven clamp 372 are arranged in a staggered manner. The positioning shaft is sequentially penetrated by the staggered points of the driving clamp 371 and the driven clamp 372, namely the driving clamp 371 and the driven clamp 372 are rotatably arranged on the positioning shaft.

The clamp body 370 further comprises a positioning plate 350 and an elastic strip 360, wherein two opposite sliding grooves 130 are formed in the inner side wall of one end of the sleeve 100 far away from the grip 200, and the length extension direction of the sliding grooves 130 is parallel to the length direction of the sleeve 100. The two ends of the positioning plate 350 correspond to the two sliding grooves 130, and the positioning plate 350 is slidably disposed in the sliding grooves 130. The two elastic strips 360 are provided, the two elastic strips 360 correspond to two ends of the positioning plate 350, namely, the elastic strips 360 are arranged in the sliding groove 130, one end of each elastic strip 360 is abutted against the other end of each elastic strip 360 on the side wall, close to the handle 200, of the sliding groove 130, and the other end of each elastic strip 360 is fixedly connected to the end of the positioning plate 350.

The positioning plate 350 is disposed at the middle of the sleeve 100, and the center line of the sleeve 100 passes through the positioning plate 350, and the extending direction of the center line of the sleeve 100 is perpendicular to the length direction of the positioning plate 350. The positioning shaft is fixedly connected to the positioning plate 350, and the axial direction of the positioning shaft is perpendicular to the length direction of the positioning plate 350 and the central line direction of the sleeve 100, respectively.

The jaw ends of the driving jaw 371 and the driven jaw 372 are disposed near the end of the sleeve 100, i.e., on the side remote from the grip 200. Thus, in the initial state, the positioning plate 350 moves toward the end of the sleeve 100 under the elastic force of the elastic strip 360, so that the positioning plate 350 drives the jaw ends of the driving jaw 371 and the driven jaw 372 to extend out of the end of the sleeve 100.

Wherein, one end of the pull wire 320 is provided with two connection ends, namely, two ends of the end of the pull wire 320 are respectively and fixedly connected with one end of the driving clamp 371 and the driven clamp 372, which are far away from the sleeve 100, and the other end of the pull wire 320 is fixedly connected with the limiting rod by sequentially penetrating through the inner space of the sleeve 100 and the inner cavity of the grip 200.

The pushing sleeve 220 moves along the length direction of the grip 200, and the driving clamp 371 and the driven clamp 372 are pulled by the power transmission of the traction wire 320 to realize opening and closing by taking the positioning shaft as the axis, so that the excision of polyps is completed.

Referring to fig. 2 and 3, the cutting assembly 300 further includes a positioning head 210, a positioning ball 212, and a third traction wire 330, the positioning head 210 being threadably coupled to the end of the grip 200 remote from the cannula 100, i.e., the positioning head 210 covers the cavity mouth at the end of the grip 200. The positioning head 210 is provided with a caulking groove 211 towards one end of the grip 200, the positioning ball 212 is rotatably arranged in the caulking groove 211, and the positioning ball 212 cannot be separated from the caulking groove 211. One end of the third traction wire 330 is fixedly connected to the positioning ball 212, and the other end of the third traction wire 330 sequentially passes through the inner cavity of the grip 200 and the inside of the sleeve 100 to be fixedly connected to the positioning plate 350.

The medical staff can move in the axial direction on the grip 200 by rotating the positioning head 210, so that the positioning plate 350 is driven to move along the extending direction of the sliding groove 130 by the power transmission of the third traction wire 330, and the clamp body 370 is contracted and extends out of the sleeve 100. And the elastic strip 360 can assist the forceps 370 to reset during extension, and fix through the threaded connection between the positioning head 210 and the grip 200 during retraction.

Referring to fig. 2 and 4, the cutting assembly 300 further includes a pushing block 250, a snare 380 and a first traction wire 340, and the grip 200 is provided with a second limit through groove 270 communicating with the inner cavity of the cannula 100, wherein the second limit through groove 270 is positioned at one side of the grip 200 near the cannula 100. The pushing block 250 is slidably disposed in the second limiting through groove 270, and one end of the pushing block 250 is located at the inner cavity of the sleeve 100, and one end is located outside the sleeve 100. One end of the first traction wire 340 is fixedly connected to the pushing block 250, and the other end of the first traction wire 340 sequentially passes through the inner cavity of the grip 200 and the sleeve 100 and extends to one end of the sleeve 100 away from the grip 200. The snare 380 is fixedly attached to the end of the first pull wire 340 remote from the push block 250.

The snare 380 is typically manufactured from nitinol, and the snare 380 in embodiments of the utility model, when retracted within the sleeve 100, will retract into a linear configuration against the wall of the sleeve 100. The snare 380 forms a closed loop as it extends out of the cannula 100 under the delivery of the push block 250 through the first pull wire 340.

In use, the clamp body 370 is retracted into the sleeve 100 by the action of the positioning head 210, thereby avoiding obstruction of the snare 380 in use. The snare 380 forms a closed loop when extended out of the cannula 100, whereby a polyp is resected by placing a polyp over the snare 380 and moving the push block 250 to retract the snare 380 into the cannula 100, whereby the snare 380 gradually closes to form a line.

The cutting assembly 300 further includes a high frequency blade connector 260 mounted to the grip 200, the high frequency blade connector 260 being disposed at an end of the grip 200 proximate the cannula 100. The input point of the high-frequency electric knife connector 260 is disposed outside the grip 200, and the output point of the high-frequency electric knife connector 260 is disposed inside the grip 200 and electrically connected with the first traction wire 340.

Referring to fig. 2 and 5, the cutting assembly 300 further includes a string bag 390, a second traction wire 310 and a pushing handle 240, the grip 200 is fixedly connected with a positioning seat 230, the positioning seat 230 is disposed at one end of the grip 200 near the sleeve 100, and the positioning seat 230 is provided with a through hole communicated with the inner cavity of the grip 200. One end of the pushing handle 240 is inserted into the through hole and extends into the inner cavity, and the other end of the pushing handle 240 is fixedly connected with a clamping seat. One end of the second traction wire 310 is fixedly connected to one end of the pushing handle 240, which is arranged in the inner cavity of the grip 200, and the other end of the second traction wire 310 sequentially passes through the inner cavity of the grip 200 and the inside of the sleeve 100 and extends to the end of the sleeve 100 far away from the grip 200. The net bag 390 is fixedly attached to the end of the second traction wire 310 remote from the push rod handle.

Wherein, the net bag 390 and the snare 380 are symmetrically arranged at two sides of the forceps body 370. And the opening and closing direction of the pincer body 370 is perpendicular to the length direction of the cannula 100, and the connecting line direction of the set point of the snare 380 and the set point of the net bag 390 is perpendicular to the opening and closing direction of the pincer body 370.

Net bag 390 is generally woven from nickel titanium material and in the present embodiment, when net bag 390 is retracted within sleeve 100, it will retract into a line against the inner wall of sleeve 100. When the net 390 is extended out of the sleeve 100 by the transmission of the second traction wire 310 under the pushing of the push handle 240, a closed net 390 is formed and the cartridge is in abutment with the end of the positioning seat 230 during this process.

In use, when either the forceps body 370 or the snare 380 has resected a polyp and has both correspondingly contracted into the cannula 100, the net bag 390 is extended out of the cannula 100 to complete collection of the resected polyp for portability out of the body.

Referring to fig. 4 and 5, the cutting assembly 300 further includes a plug 120, wherein the sleeve 100 is provided with the water injection port 110, and the plug 120 is blocked at the water injection port 110. So that the liquid medicine is injected into the sleeve 100 for sterilization after the polyp is diagnosed and resected, and the normal saline can be injected according to the content of mucus bubbles at the diagnosis and treatment position of the patient in the diagnosis and resect process, so as to improve the success rate of the operation.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (8)

1. The multifunctional biopsy forceps are characterized by comprising a sleeve (100), a grip (200) and a cutting assembly (300), wherein the grip (200) is arranged at one end of the sleeve (100), an inner cavity for communicating the sleeve (100) is formed in the grip (200), the cutting assembly (300) comprises a forceps body (370), a traction wire (320) and a pushing sleeve (220), the forceps body (370) is arranged at one end, far away from the grip (200), of the sleeve (100), the grip (200) is sleeved on the grip (200) and is arranged in a sliding manner, the traction wire (320) penetrates through the sleeve (100) and the inner cavity of the grip (200), one end of the traction wire (320) is fixedly connected to the pushing sleeve (220), and the other end of the traction wire (320) is connected to the forceps body (370), and the forceps body (370) is driven to be opened and closed by displacement of the pushing sleeve (220) on the grip (200). The cutting assembly (300) further comprises a pushing block (250), a snare (380) and a first traction wire (340), wherein the pushing block (250) is arranged on the handle (200) in a sliding mode, the first traction wire (340) also penetrates through the sleeve (100) and the inner cavity of the handle (200), one end of the first traction wire (340) is fixedly connected with the pushing block (250), the other end of the first traction wire (340) is fixedly connected with the snare (380), the snare (380) is arranged at one end of the sleeve (100) where the clamp body (370) is arranged, and the snare (380) is driven to extend out of the sleeve (100) and retract into the sleeve (100) to be combined through displacement of the pushing block (250) on the handle (200).

2. The multifunctional biopsy forceps of claim 1, wherein the cutting assembly (300) further comprises a string bag (390), a second traction wire (310) and a pushing handle (240), wherein the pushing handle (240) is inserted into the inner cavity of the handle (200) from one end of the side wall of the handle (200), the second traction wire (310) passes through the sleeve (100) and the inner cavity of the handle (200), one end of the second traction wire (310) is fixedly connected with the pushing handle (240), the other end of the second traction wire (310) is fixedly connected with the string bag (390), the string bag (390) is arranged at one end of the sleeve (100) mounted on the forceps body (370), and the string bag (390) is driven to extend out of the sleeve (100) and retract into the sleeve (100) to be combined through displacement of the pushing handle (240) on the grip (200).

3. A multifunctional biopsy forceps according to claim 2, wherein the net bag (390) is arranged symmetrically to the snare (380) on both sides of the forceps body (370).

4. A multifunctional biopsy forceps according to claim 3, wherein the forceps body (370) is further provided with a positioning plate (350), the positioning plate (350) is fixedly connected to the forceps body (370), the inner wall of the sleeve (100) is provided with a chute (130), and the positioning plate (350) is slidably arranged in the chute (130) along the length direction of the sleeve.

5. The multifunctional biopsy forceps of claim 4, wherein the opening and closing direction of the forceps body (370) is perpendicular to the length direction of the cannula (100), and the connecting line direction of the set point of the snare (380) and the set point of the string bag (390) is perpendicular to the opening and closing direction of the forceps body (370).

6. The multifunctional biopsy forceps of claim 4, wherein the cutting assembly (300) further comprises a positioning head (210) and a third traction wire (330), wherein the positioning head (210) is in threaded connection with one end of the grip (200) far away from the forceps body (370), the third traction wire (330) sequentially penetrates through the sleeve (100) and the inner cavity of the grip (200), one end of the third traction wire (330) is fixedly connected with the positioning plate (350), and the other end of the third traction wire (330) is fixedly connected with the positioning head (210).

7. The multifunctional biopsy forceps of claim 1, wherein the cannula (100) is provided with a water filling port (110), the cannula (100) is provided with a plug (120), and the plug (120) is embedded and blocked in the water filling port (110).

8. The multifunctional biopsy forceps of claim 1, wherein the grip (200) has a high frequency blade connector (260) mounted thereon for connection to a first pull wire (340).