CN116172623A

CN116172623A - Endoscope sampling forceps

Info

Publication number: CN116172623A
Application number: CN202211611190.1A
Authority: CN
Inventors: 徐星岗; 辛启弘; 陈兴鹏; 祝琴; 盛枫
Original assignee: Suzhou Beiyong Medical Technology Co ltd
Current assignee: Suzhou Beiyong Medical Technology Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-05-30

Abstract

The invention discloses an endoscope sampling forceps, which relates to the field of medical appliances, and has the technical scheme that: including the wire drawing, the handle that connects gradually, the spring pipe, binding clip subassembly and the slider of slip setting on the handle, the wire drawing wears to establish in handle and spring pipe, and the one end and the slider of wire drawing are connected, the other end is connected with binding clip subassembly, the binding clip subassembly includes pincers seat and two binding clips, the one end and the spring pipe fixed connection of pincers seat, the binding clip includes the pincers handle, the pincers handle of two binding clips articulates respectively at the other end of pincers seat, and two pincers handles are located the front and back both sides of pincers seat respectively, be provided with respectively on the pincers seat and supply two pincers handle articulated shaft hole, two shaft holes are controlled to divide to be listed as and are set up, the wire drawing sets up to two, every wire drawing is kept away from its one side with the articulated position in shaft hole with every pincers handle and articulates. The invention has the advantages of simple structure, large biting force, low production and maintenance cost and high working stability, and is suitable for sampling in a narrow space.

Description

Endoscope sampling forceps

Technical Field

The invention relates to the field of medical instruments, in particular to an endoscope sampling forceps.

Background

With the development of medical technology, since the endoscope operation is a novel operation and has the advantages of small operation wound, small pain of patients and the like, the endoscope operation is more and more favored by doctors and patients. The sampling forceps are a necessary tool in clinical endoscopy, and realize a small-wound and small-pain examination process, so that the sampling forceps are widely used, and when a doctor or a patient wants to carry out pathological examination on a pathological change part in a cavity, the sampling forceps can reach the pathological change part through the endoscope forceps channel and clamp pathological change tissues for pathological examination.

At present, a common endoscopic living body sampling forceps in the market transmits push-pull force from a handle to a forceps head of the sampling forceps through wiredrawing, so that the opening and closing of a jaw are controlled. The existing forceps head structure component mainly comprises forceps heads, connecting rods, push-pull rods, forceps head bases and the like, and because the push-pull rods are connected with the connecting rods on two sides to form a single-shaft structure, the force arm is limited in size during occlusion, and the biting force of the forceps heads is insufficient, so that tearing and bleeding occur during tissue biting of the forceps heads in operation, hemostasis treatment is needed, the cost is increased, and more pains are brought to patients.

Aiming at the problems, the Chinese patent of the invention with the publication number of CN108969026A discloses a medical forceps, and the technical scheme is as follows: including handle, haulage rope, spring hose, cup, push-and-pull rod, connection piece and pliers cup, spring hose is connected with the cup, the haulage rope wears to establish in spring hose and cup, and haulage rope one end is connected with the handle, and the haulage rope other end is connected with the push-and-pull rod, and two claw middle parts are articulated and this articulated shaft is installed on the pliers seat through the articulated shaft, the lower part of claw is articulated with the one end of connecting piece, and the other end and the push-and-pull rod of connecting piece are articulated, have on the push-and-pull rod respectively be used for with two articulated centers of connecting piece articulated, and two connecting pieces are the cross setting.

The mode adopts the double-hinge center structure, the clamp claws, the connecting pieces and the push-pull rod form a staggered five-link mechanism, so that the flexible pushing of the clamp is ensured, the biting force of the clamp is enhanced, the efficiency and the accuracy of tissue biting of the biopsy clamp are improved, and the biopsy clamp has the following defects:

1. when the clamp claws are opened, the connecting piece of the five-bar mechanism can be outwards expanded, a larger movable radius is needed, and sampling in a narrow space is difficult;

2. because the scissors essentially adopts the structure principle of the scissors fork arms, the opening and closing angle between the two grasping forceps is very limited;

3. the clamp head component has more parts, high production cost and low working stability.

There is therefore a need to propose a new solution to this problem.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide an endoscope sampling clamp which solves the problems that the existing endoscope sampling clamp is complex in structure, difficult to sample in a narrow space and insufficient in biting force.

The technical aim of the invention is realized by the following technical scheme: the utility model provides an endoscope sampling forceps, includes wire drawing, handle, spring pipe, binding clip subassembly and the slider of slip setting on the handle that connects gradually, the wire drawing wears to establish in handle and spring pipe, and the one end and the slider of wire drawing are connected, and the other end is connected with binding clip subassembly, the binding clip subassembly includes pincers seat and two binding clips, the one end and the spring pipe fixed connection of pincers seat, the binding clip includes the pincers handle, two the pincers handle of binding clip articulates respectively at the other end of pincers seat, and two the pincers handle is located respectively both sides around the pincers seat, be provided with respectively on the pincers seat and supply two pincers handle articulated shaft hole, two the shaft hole left and right sides branch to be listed as and set up, the wire drawing sets up two, every the wire drawing is articulated with every its one side of keeping away from its articulated position with the shaft hole, and when the push-pull slider, two binding clips can rotate in opposite directions or the opposite directions in order to drive two binding clips and close or open respectively.

In one embodiment, the pliers seat comprises a pipe sleeve fixedly connected with the spring pipe and a frame plate formed by upwards extending the middle of the top of the pipe sleeve, the frame plate is arranged to be flat, two shaft holes are arranged on the frame plate in a penetrating or non-penetrating mode, a connecting line between the two shaft holes is parallel to the top end face of the pliers seat, two through grooves are symmetrically formed in the pipe sleeve along the frame plate, a rotating shaft and a driving shaft are respectively fixed on pliers handles, the pliers handles are hinged to the shaft holes through the rotating shaft, and the wire drawing is hinged to the driving shaft after penetrating through the through grooves.

In one embodiment, the pliers head further comprises a pliers jaw, the pliers handle is formed by extending downwards from the front side of the lower part of the pliers jaw, the pliers handle is L-shaped, the rotating shaft is fixed at the inflection point of the L-shaped pliers handle, the driving shaft is fixed at the tail end of the L-shaped pliers handle, the rear side of the lower part of the pliers jaw extends downwards to form a short arm, an assembly groove is formed between the pliers handle and the short arm, the width of the assembly groove is matched with the thickness of the frame plate, and at least part of the frame plate can extend into and be limited in the assembly groove.

In one embodiment, the thickness of the grip at the root of the shaft is greater than the thickness of the grip at the root of the shaft, such that a step is formed between the shaft and the shaft, the shaft having a height that is less than the height of the step.

In one embodiment, the handle is provided with a limiting stroke for limiting the sliding block, and when the sliding block slides in the limiting stroke, the opening and closing angle between the two jaws is 0-100 degrees.

In one embodiment, a mechanical dismounting angle is further formed between the two jaws, and when the mechanical dismounting angle is within the mechanical dismounting angle range, the two clamp heads can be respectively dismounted from the clamp seat, and the mechanical dismounting angle is more than 100 degrees and less than or equal to 180 degrees.

In one embodiment, one end of the wire drawing close to the driving shaft is bent to form a pull ring, and the pull ring is hinged with the driving shaft.

In one embodiment, the jaws are hollow arc-shaped thin-wall structures with openings at one ends, the openings of the two jaws are arranged in opposite directions, and through holes are formed in the two jaws in a penetrating mode.

In one embodiment, the relative positions of the clamp handle of one clamp head and the short arm of the other clamp head are respectively provided with radians which are mutually matched.

In one embodiment, the wiredrawing is an elastic hard wiredrawing.

In summary, the invention has the following beneficial effects: according to the invention, the two binding clip is hinged with the two shaft holes respectively, and the wire drawing for providing driving force is respectively arranged for each binding clip, so that the two binding clips can be respectively rotated around the shaft holes to realize the opening and closing of the two binding clips in operation, the biting force of the two binding clips is enhanced, and the binding clip assembly only comprises the clip seat and the two binding clips.

Drawings

FIG. 1 is a schematic view of the structure of an endoscopic sampling forceps according to an embodiment of the present application;

FIG. 2 is an exploded view of a binding clip assembly in an endoscopic sampling forceps according to an embodiment of the present application;

FIG. 3 is a schematic view of an open jaw in an endoscopic sampling clamp according to an embodiment of the present application;

FIG. 4 is a schematic view of a closed jaw in an endoscopic sampling forceps according to an embodiment of the present application;

FIG. 5 is a simplified force analysis diagram of a closed jaw in an endoscopic sampling forceps according to an embodiment of the present application;

fig. 6 is a schematic view of an endoscopic sampling forceps according to an embodiment of the present application, when a mechanical angle of detachment is reached between the forceps head and the forceps holder.

In the figure: 1. a handle; 2. a spring tube; 3. a clamp head assembly; 31. a clamp head; 311. a jaw; 3111. a through hole; 312. a short arm; 313. an assembly groove; 314. a clamp handle; 3141. the device is provided with steps; 32. a clamp seat; 321. a frame plate; 3211. a shaft hole; 322. a pipe sleeve; 3221. a through groove; 4. a slide block; 5. drawing wire; 51. a pull ring; 6. a rotating shaft; 7. a drive shaft.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention briefly described below will be rendered by reference to the appended drawings.

As shown in fig. 1 to 4, the embodiment of the application provides an endoscope sampling forceps, including wire drawing 5, handle 1, spring pipe 2, binding clip subassembly 3 that connect gradually and slide the slider 4 that sets up on handle 1, wire drawing 5 wears to establish in handle 1 and spring pipe 2, and the one end and the slider 4 of wire drawing 5 are connected, and wherein wire drawing 5 accessible spliced pole is articulated with slider 4, and slider 4 is a lantern ring, is provided with the spout that can supply the spliced pole to stretch into on handle 1, and the other end and the binding clip subassembly 3 of wire drawing 5 are connected. The clamp head assembly 3 comprises a clamp seat 32 and two clamp heads 31, and one end of the clamp seat 32 is fixedly connected with the spring tube 2. The pliers head 31 includes pliers handles 314, two pliers handles 314 of the pliers head 31 are respectively hinged to the other end of the pliers seat 32, the two pliers handles 314 are respectively located at the front side and the rear side of the pliers seat 32, shaft holes 3211 for the two pliers handles 314 to be hinged are respectively arranged on the pliers seat 32, and the two shaft holes 3211 are arranged in a left-right split mode. The number of the wire drawing 5 is two, each wire drawing 5 is hinged with one side of each clamp handle 314 away from the position where the wire drawing 5 is hinged with the shaft hole 3211, and when the sliding block 4 is pushed and pulled, the two clamp heads 31 can respectively rotate around the shaft hole 3211 in opposite directions or back to back so as to drive the two clamp heads 31 to be closed or opened.

Specifically, the wire drawing 5 is an elastic hard wire drawing, and may specifically be a steel wire.

When the sliding block 4 on the handle 1 is pushed and pulled to withdraw or retract the wire drawing 5, the wire drawing 5 drives the two clamp heads 31 to rotate around the shaft holes 3211 in opposite directions or in opposite directions respectively to drive the two clamp heads 31 to be closed or opened, specifically, when the sliding block 4 is pushed, the two clamp heads 31 are opened, and when the sliding block 4 is pulled back, the two clamp heads 31 are closed.

The two binding clip 31 are hinged with the two shaft holes 3211 respectively, the wire drawing 5 for providing driving force is arranged for each binding clip 31 respectively, the two binding clips 31 can rotate around the shaft holes 3211 respectively to realize the opening and closing of the two binding clips 31 during operation, the biting force of the two binding clips 31 is enhanced, and the binding clip 31 assembly 3 only comprises the clip seat 32 and the two binding clips 31, so that the device has the advantages of simple structure, low production and maintenance cost and high working stability, and simultaneously, when the two binding clips 31 are opened during operation, the position of the clip handles 314 can be retracted inwards, so that the position of the clip handles 314 cannot be expanded outwards, the device has smaller movable radius, and the device can be suitable for sampling in a narrow space.

In this embodiment, the pliers seat 32 includes a pipe sleeve 322 fixedly connected with the spring tube 2 and a frame plate 321 formed by extending upward from the middle of the top of the pipe sleeve 322, the frame plate 321 is flat, two shaft holes 3211 are arranged on the frame plate 321 in a penetrating or non-penetrating manner, a connecting line between the two shaft holes 3211 is parallel to the top end surface of the pliers seat 32, two through grooves 3221 are symmetrically formed on the pipe sleeve 322 along the frame plate 321, a rotating shaft 6 and a driving shaft 7 are respectively fixed on the pliers handle 314, the pliers handle 314 is hinged with the shaft hole 3211 through the rotating shaft 6, and the wire drawing 5 is hinged with the driving shaft 7 after passing through the through grooves 3221.

Specifically, the sleeve 322 may be connected to the spring tube 2 by laser welding, where the depth of the shaft hole 3211 is only greater than the length of the rotating shaft 6, so that the clamp handle 314 is better attached to the frame plate 321, and the through groove 3221 has a certain length and width, so that the wire drawing 5 can freely move.

Through the arrangement of the through groove 3221, when the clamp handle 314 rotates around the rotating shaft 6, the wire drawing 5 moves left and right or up and down within the range of the through groove 3221 all the time, so that the movable radius of the wire drawing 5 is not too large, and the clamp head 31 assembly 3 is favorable for sampling in a narrow space.

In this embodiment, the thickness of the grip 314 at the root of the shaft 6 is greater than the thickness of the grip 314 at the root of the driving shaft 7, so that a step 3141 is formed between the shaft 6 and the driving shaft 7 by the grip 314, and the height of the driving shaft 7 is lower than the height of the step 3141.

The arrangement of the structure ensures that the driving shaft 7 is not contacted with the frame plate 321 when the clamp handle 314 rotates around the rotating shaft 6, thereby not interfering with the rotation of the clamp handle 314 and effectively improving the rotation flexibility of the clamp handle 314.

In this embodiment, the pliers head 31 further includes a jaw 311, the pliers handle 314 is formed by extending downward from a front side of a lower portion of the jaw 311, the pliers handle 314 is L-shaped, the rotating shaft 6 is fixed at an inflection point of the L-shaped pliers handle 314, the driving shaft 7 is fixed at an end of the L-shaped pliers handle 314, a short arm 312 is formed by extending downward from a rear side of the lower portion of the jaw 311, an assembling groove 313 is formed between the pliers handle 314 and the short arm 312, a width of the assembling groove 313 is adapted to a thickness of the frame plate 321, and at least a part of the frame plate 321 can extend into and be limited in the assembling groove 313.

Specifically, when the handles 314 are rotated to a certain position, the short arms 312 lose their restraining effect on the shelf 321, so that the head 31 can be detached from the shelf 321.

In this embodiment, the handle 1 is provided with a limiting stroke for limiting the sliding block 4, and when the sliding block 4 slides in the limiting stroke, the opening and closing angle between the two jaws 311 is 0 ° -100 °.

Specifically, as shown in fig. 5, the opening and closing angle may be defined by setting a connecting line between the rotating shaft 6 and the driving shaft 7 as a, setting b connecting line between the two shaft holes 3211 as b, setting an included angle between a and b as α, and when the pliers head 31 is opened and closed, the α angle may be-5 ° to 45 °, and at this time, the opening and closing angle between the two pliers jaws 311 is 0 ° -100 °.

By adopting the mode, the two jaws 311 have a larger opening and closing angle in the forming range, and have better applicability.

In fig. 5, when the jaw 31 is closed, the wire drawing 5 pulls down the drive shaft 7 to exert a downward force component Fa on the arm a, which is longer and larger than the four-bar mechanism sampling jaw arm a, resulting in a larger moment, thereby generating a larger force F on the jaw 311 via the rotating shaft 6 and forcefully engaging the other jaw 311.

In this embodiment, a mechanical dismounting angle is further provided between the two jaws 311, and when the mechanical dismounting angle is within the mechanical dismounting angle range, the two pliers heads 31 can be respectively dismounted from the pliers base 32, and the mechanical dismounting angle is greater than 100 ° and less than or equal to 180 °.

Specifically, as shown in fig. 6, the mechanical disassembly angle may be defined in the following form, assuming that the mechanical disassembly angle is α ₀ When the angle is alpha ₀ When the short arm 312 loses the limiting function on the frame plate 321, so that the clamp head 31 can be detached from the frame plate 321, and in the specific implementation process, the distance between the rotating shaft 6 and the short arm 312 is larger than the minimum distance between the shaft hole 3211 and the side wall of the adjacent frame plate 321.

It should be noted that the mechanical disassembly angle can be achieved only when the clamp head 31 is manually pressed down, but the mechanical disassembly angle cannot be achieved when the sliding block 4 is pushed and pulled in the stroke, so that the clamp head 31 cannot fall off from the clamp seat 32 during normal operation.

The above structure makes the clamp head 31 assembly 3 have the advantage of convenient and quick disassembly and assembly, and is favorable for subsequent replacement or cleaning.

In this embodiment, a pull ring 51 is formed by bending one end of the wire drawing 5 near the driving shaft 7, and the pull ring 51 is hinged with the driving shaft 7.

The arrangement of the structure has a movable gap between the pull ring 51 and the driving shaft 7, so that the movement between the pull ring 51 and the driving shaft 7 is smoother.

In this embodiment, the jaws 311 are hollow arc-shaped thin-wall structures with openings at one ends, the openings of the two jaws 311 are arranged in opposite directions, and through holes 3111 are further formed in the two jaws 311 in a penetrating manner.

In the above manner, the jaw 311 is provided with the hollow arc thin-wall structure, so that the jaw 311 has the advantages of light weight and high structural strength, and through the arrangement of the through holes 3111, when the two jaws 311 are closed, the gas between the two jaws can be discharged from the through holes 3111, thereby being beneficial to improving the meshing tightness.

In this embodiment, the relative positions of the grip 314 of one of the binding clip 31 and the short arm 312 of the other binding clip 31 are respectively provided with mutually matched radians. Through the setting of the radian of mutually supporting, when two binding clip 31 moved in opposite directions or in opposite directions, the bottom between the two can the arc laminating, is favorable to keeping the stability of two binding clip 31 like this.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.

Claims

1. The utility model provides an endoscope sampling forceps, includes wire drawing (5), handle (1), spring pipe (2), binding clip subassembly (3) and slip setting slider (4) on handle (1) that connect gradually, wire drawing (5) wear to establish in handle (1) and spring pipe (2), and the one end and slider (4) of wire drawing (5) are connected, and the other end is connected its characterized in that with binding clip subassembly (3): the utility model provides a pliers head assembly (3) including pincers seat (32) and two binding clip (31), the one end and the spring pipe (2) fixed connection of pincers seat (32), binding clip (31) include pincers handle (314), two pincers handle (314) of binding clip (31) articulate respectively in the other end of pincers seat (32), and two pincers handle (314) are located the front and back both sides of pincers seat (32) respectively, be provided with respectively on pincers seat (32) and supply two pincers handle (314) articulated shaft hole (3211), two branch sets up about shaft hole (3211), wire drawing (5) are set up to two, every wire drawing (5) and every pincers handle (314) are kept away from its one side articulated with shaft hole (3211) articulated position, and when push-pull slider (4), two binding clip (31) can rotate around shaft hole (3211) or are opposite directions and are opened in order to drive two binding clip (31) closure or are opened.

2. The endoscopic sampling forceps according to claim 1, wherein: the utility model provides a pliers seat (32) including pipe box (322) with spring pipe (2) fixed connection and upwards extend frame board (321) that forms by the top of pipe box (322), frame board (321) set up to platykurtic, two shaft hole (3211) run through or non-run through ground set up on frame board (321), two line between shaft hole (3211) is parallel with the top terminal surface of pliers seat (32), two link up groove (3221) have been seted up along frame board (321) symmetry on pipe box (322), be fixed with pivot (6) and drive shaft (7) on pliers handle (314) respectively, pliers handle (314) are articulated with shaft hole (3211) through pivot (6), wire drawing (5) pass through link up behind groove (3221) with drive shaft (7) articulated.

3. The endoscopic sampling forceps according to claim 2, wherein: the pliers head (31) further comprises a jaw (311), the pliers handle (314) is formed by downwards extending the front side of the lower part of the jaw (311), the pliers handle (314) is L-shaped, the rotating shaft (6) is fixed at the inflection point of the L-shaped pliers handle (314), the driving shaft (7) is fixed at the tail end of the L-shaped pliers handle (314), the lower back side of the jaw (311) is downwards extended to form a short arm (312), an assembly groove (313) is formed between the pliers handle (314) and the short arm (312), the width of the assembly groove (313) is matched with the thickness of the frame plate (321), and at least part of the frame plate (321) can extend into and be limited in the assembly groove (313).

4. An endoscopic sampling forceps according to claim 3, wherein: the thickness of the clamp handle (314) at the root of the rotating shaft (6) is larger than that of the clamp handle (314) at the root of the driving shaft (7), so that a step (3141) is formed between the rotating shaft (6) and the driving shaft (7) by the clamp handle (314), and the height of the driving shaft (7) is lower than that of the step (3141).

5. An endoscopic sampling forceps according to claim 3, wherein: the handle (1) is provided with a limiting stroke for limiting the sliding block (4), and when the sliding block (4) slides in the limiting stroke, the opening and closing angle between the two jaws (311) is 0-100 degrees.

6. The endoscopic sampling forceps according to claim 5, wherein: the mechanical dismounting angle is further arranged between the two jaws (311), and when the mechanical dismounting angle is within the mechanical dismounting angle range, the two forceps heads (31) can be respectively dismounted from the forceps base (32), and the mechanical dismounting angle is more than 100 degrees and less than or equal to 180 degrees.

7. The endoscopic sampling forceps according to claim 2, wherein: one end of the wire drawing (5) close to the driving shaft (7) is bent to form a pull ring (51), and the pull ring (51) is hinged with the driving shaft (7).

8. An endoscopic sampling forceps according to claim 3, wherein: the jaws (311) are of hollow arc-shaped thin-wall structures with openings at one ends, the openings of the two jaws (311) are arranged in opposite directions, and through holes (3111) are formed in the two jaws (311) in a penetrating mode.

9. The endoscopic sampling forceps according to claim 1, wherein: the relative positions of the clamp handle (314) of one clamp head (31) and the short arm (312) of the other clamp head (31) are respectively provided with radians which are mutually matched.

10. The endoscopic sampling forceps according to claim 1, wherein: the wire drawing (5) is elastic hard wire drawing.