CN115153726B

CN115153726B - Release device for releasing metal clip

Info

Publication number: CN115153726B
Application number: CN202210746410.5A
Authority: CN
Inventors: 闵秀君; 杨红燕; 杜江; 熊千惠; 邹婷
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2023-05-26
Anticipated expiration: 2042-06-29
Also published as: CN115153726A

Abstract

The invention provides a releaser for releasing a metal clip, relates to the technical field of medical appliances, and solves the technical problem that the metal clip which does not fall off normally cannot be taken off conveniently in the prior art. The releaser comprises an operation part, an outer pipeline and an action part, wherein one end of the outer pipeline is connected with the operation part, the other end of the outer pipeline is connected with the action part, the operation part comprises a sliding block and a driving line, the sliding block is connected with one end of the driving line, the other end of the driving line penetrates through an inner cavity of the outer pipeline to extend towards the direction of the action part, the action part comprises a top rod positioned at the tail end of the driving line and connected with the driving line, the driving line can drive the top rod to extend outwards under the action of the operation part and acts on a movable shaft of a metal clamp, and the movable shaft moves distally along a sliding rail on the inner wall of a locking sleeve so as to open two clamping pieces of the metal clamp. The releaser can effectively release the metal clip, timely take off the metal clip which does not fall off, and avoid affecting the health of patients.

Description

Release device for releasing metal clip

Technical Field

The invention relates to the technical field of medical appliances, in particular to a releaser for releasing a metal clip.

Background

In recent years, with the rapid development of various instruments for digestive endoscopes and diagnosis and treatment techniques for clinicians, more and more minimally invasive endoscopic treatments are being used in clinic, and the development of endoscopic devices and accessories thereof is also becoming more and more advanced. Digestive endoscopy is becoming more and more widespread in clinical medicine, with metal clips for hemostasis and prevention of perforation under digestive endoscopy being particularly widely used. At present, most metal clips used for treatment under a digestive endoscope can fall off by themselves and be discharged through anus after the aim of treatment is achieved, but a gastrointestinal endoscope can be reviewed after one year for a patient who is hit with the metal clips, and the metal clips which clamp tissues one year ago are found to be not normally fallen off and discharged outside the body and are always clamped on gastrointestinal mucosa which is restored to be normal, so that artificial 'gastrointestinal foreign matters' are formed and exist in a human body.

As shown in fig. 1, fig. 1 shows a schematic structural diagram of a metal clip in a closed state in the prior art, the prior art metal clip comprises two clamping pieces 1 and a locking sleeve 2, the distal ends of the two clamping pieces 1 can accommodate tissues after being closed to achieve the purpose of treatment, an arc-shaped chute 5 is arranged at the proximal ends of the two clamping pieces 1, a pin shaft 3 is arranged in the arc-shaped chute 5, and two ends of the pin shaft 3 are arranged on the side wall of the locking sleeve 2 and are used for realizing the opening and closing of the clamping pieces. The outside of the arc chute 5 of the two clamping pieces 1 is provided with a movable shaft 4, the movable shaft 4 passes through the two clamping pieces 1 and enables two ends of the movable shaft to be movably arranged in the locking sleeve 2, and the inner wall of the locking sleeve 2 is symmetrically provided with sliding rails which allow two ends of the movable shaft 4 to slide. After the metal clip clamps the tissue, the two clamping pieces cannot be opened by themselves, so that for the metal clip which cannot be detached by itself, the medical staff cannot directly tear the metal clip off by using the foreign matter forceps or the biopsy forceps, and the risk of bleeding and perforation can be caused. And because the size of the locking sleeve 2 is smaller, the internal accommodating space is smaller, and the existing control wire can not be used again to open the clamping piece because the existing control wire is separated from the metal clamp after the operation is finished. If the metal clip is not taken out in time, the metal clip can become foreign matters in the digestive tract, so that certain influence is caused on the functions of the digestive tract, and certain psychological burden is caused on a patient, so that the health of a human body is not facilitated. Therefore, it is desirable to provide a convenient metal clip releaser to facilitate the medical personnel to remove the non-detached metal clip in time.

Disclosure of Invention

The invention aims to provide a releaser for releasing a metal clip, which solves the technical problem that the metal clip which does not fall off normally cannot be taken off conveniently in the prior art. The preferred technical solutions of the technical solutions provided by the present invention can produce a plurality of technical effects described below.

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

the invention provides a releaser for releasing a metal clip, which comprises an operation part, an outer pipeline and an action part, wherein one end of the outer pipeline is connected with the operation part, the other end of the outer pipeline is connected with the action part,

the operation part comprises a sliding block and a driving wire, wherein the sliding block is connected with one end of the driving wire, the other end of the driving wire penetrates through an inner cavity of the outer pipeline to extend towards the direction of the action part, the action part comprises a top rod which is positioned at the tail end of the driving wire and connected with the driving wire, under the action of the operation part, the driving wire can drive the top rod to move towards the far end direction and acts on a movable shaft of the metal clamp, and the movable shaft moves towards the far end along a sliding rail of the inner wall of the locking sleeve so as to open two clamping pieces of the metal clamp.

According to a preferred embodiment, the action part further comprises a first guide sleeve, a strong magnetic sleeve and a second guide sleeve which are sequentially connected to the distal end of the outer tube from far to near, wherein the strong magnetic sleeve is positioned between the first guide sleeve and the second guide sleeve, and the second guide sleeve is linearly connected with the outer tube.

According to a preferred embodiment, the first guide sleeve is conical and is arranged in such a way that the inner diameter gradually increases from the connection with the ferromagnetic sleeve outwards.

According to a preferred embodiment, the outer wall of the first guide sleeve is inclined outwards from the joint with the strong magnetic sleeve by an angle of 10 degrees, and the length of the first guide sleeve is 2/5 of the length of the locking sleeve.

According to a preferred embodiment, the strong magnetic sleeve is a sleeve structure with strong magnetism to the locking sleeve, and the inner diameter of the strong magnetic sleeve is not smaller than the outer diameter of the locking sleeve of the metal clip,

the sum of the lengths of the first guide sleeve and the strong magnetic sleeve is not greater than the length of the locking sleeve.

According to a preferred embodiment, the second guide sleeve is internally provided with a limiting cavity for limiting the top rod, the limiting cavity is eccentrically arranged in the second guide sleeve, the inner diameter of the limiting cavity is smaller than that of the outer pipeline and that of the strong magnetic sleeve, and the length of the second guide sleeve is twice that of the locking sleeve.

According to a preferred embodiment, the inner diameter of the outer tube is larger than the inner diameter of the second guide sleeve and smaller than the inner diameter of the strong magnetic sleeve, and a protective tube and a positioning cap are connected to the proximal end of the outer tube.

According to a preferred embodiment, the protective tube and the positioning cap have an inner cavity therein which allows the drive wire to move back and forth.

According to a preferred embodiment, a sliding handle is connected to the proximal end of the positioning cap, and the sliding block is sleeved on the sliding handle and can slide back and forth along the length direction of the sliding handle.

According to a preferred embodiment, the diameter of the plunger is larger than the diameter of the drive wire, and the length of the plunger and the drive wire is at least such that the distal end of the plunger is able to extend half the way inside the ferromagnetic sleeve when the slider is slid to the distal-most end of the sliding handle.

Based on the technical scheme, the releaser for releasing the metal clip has at least the following technical effects:

the invention relates to a releaser for releasing a metal clip, which comprises an operation part, an outer pipeline and an action part, wherein one end of the outer pipeline is connected with the operation part, the other end of the outer pipeline is connected with the action part, the operation part comprises a sliding block and a driving line, the sliding block is connected with one end of the driving line, the other end of the driving line penetrates through an inner cavity of the outer pipeline to extend towards the direction of the action part, the action part comprises a top rod positioned at the tail end of the driving line, the driving line can drive the top rod to extend outwards under the action of the operation part and act on a movable shaft of the metal clip, and the movable shaft moves distally along a sliding rail on the inner wall of a locking sleeve so as to open two clamping pieces of the metal clip. Therefore, for the metal clip that does not drop by oneself, medical personnel will this application release the outer pipeline distal end of ware and action portion insert in the human body through digestion scope biopsy hole and extend to the metal clip position, make action portion align and the lock sleeve of fixed metal clip, drive line and top stick outwards stretch out through the operation portion, and act on the loose axle of metal clip, make the loose axle follow slide rail and remove to the distal end, and then make the round pin axle of metal clip slide to the proximal end of arc spout, open two clamping pieces of metal clip. Therefore, the release of the metal clip can be effectively realized, and the metal clip which does not fall off can be timely taken away, so that the health of a patient is prevented from being influenced.

Drawings

In order to more clearly illustrate the embodiments of the invention 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 invention, 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 a prior art metal clip in a closed configuration;

FIG. 2 is a schematic view of the structure of the releaser for releasing the metal clip of the present invention;

fig. 3 is a cross-sectional view of an operating portion of the releaser for releasing a metal clip according to the present invention.

In the figure: 1-clamping pieces; 2-a locking sleeve; 3-pin shafts; 4-a movable shaft; 5-arc chute; 10-a first guide sleeve; 11-a strong magnetic sleeve; 12-a second guide sleeve; 13-pushing a rod; 14-an external pipeline; 15-driving lines; 16-protecting tube; 17-positioning cap; 18-a slider; 19-a sliding handle; 20-an operation part; 21-a limiting cavity; 30-an action part.

Detailed Description

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

The technical scheme of the invention is described in detail below with reference to the attached drawings.

As shown in fig. 2 and 3, the present invention provides a releaser for releasing a metal clip, comprising an operating part 20, an outer line 14 and an actuating part 30, wherein one end of the outer line 14 is connected to the operating part 20 and the other end is connected to the actuating part 30. The operating portion 20 includes a slider 18 and a driving wire 15, where the slider 18 is connected with one end of the driving wire 15, and the other end of the driving wire 15 extends in the direction of the actuating portion 30 through the inner cavity of the outer pipeline 14, the actuating portion 30 includes a top rod 13 located at the end of the driving wire 15 and connected with the driving wire 15, and under the action of the operating portion 20, the driving wire 15 can drive the top rod 13 to extend outwards and act on the movable shaft 4 of the metal clip, so that the movable shaft 4 moves distally along the sliding rail of the inner wall of the locking sleeve 2, so that the two clamping pieces 1 of the metal clip are opened. For the metal clip that does not drop by oneself, medical personnel place the outer pipeline distal end and the action portion of this releaser in the human body and extend to the metal clip position, make action portion align the lock sleeve of metal clip, drive line and top stick through the operation portion and remove to the distal end, and act on the loose axle of metal clip, make the loose axle remove to the distal end along the slide rail, and then make the round pin axle of metal clip slide to the proximal end of arc spout, open two clamping pieces of metal clip. Therefore, the release of the metal clip can be effectively realized, and the metal clip which does not fall off can be timely taken away, so that the health of a patient is prevented from being influenced.

Here, "distal" refers to an end away from the operation portion 20, and "proximal" refers to an end close to the operation portion 20.

Further preferably, the actuating portion 30 further includes a first guide sleeve 10, a ferromagnetic sleeve 11 and a second guide sleeve 12 sequentially connected to the distal end of the outer pipe 14 from the far side to the near side, wherein the ferromagnetic sleeve 11 is located between the first guide sleeve 10 and the second guide sleeve 12, and the second guide sleeve 12 is connected to the outer pipe 14. The first guide bush 10 has a guide function of moving the ferromagnetic bush toward the lock bush of the metal clip. The second guide sleeve 12 has a guiding effect on the outward movement of the ejector rod 13. The ferromagnetic sleeve 11 can fix the locking sleeve so that both clamps of the metal clamp can take the entire metal clamp out together with the outer wire after release.

Preferably, as shown in fig. 3, the first guide sleeve 10 has a conical shape in which an inner diameter gradually increases from a connection with the ferromagnetic sleeve 11. Specifically, the outer wall of the first guide sleeve 10 is inclined at an angle of 10 ° outward from the junction with the ferromagnetic sleeve 11. The length of the first guide sleeve 10 is 2/5 of the length of the locking sleeve 2. The first guiding sleeve has no magnetism, and the action part is close to the locking sleeve of the metal clamp, so that the strong magnetic sleeve 11 is more easily abutted with the locking sleeve to play a guiding role.

Further preferably, the ferromagnetic sleeve 11 is a sleeve structure with strong magnetism to the locking sleeve 2, and the inner diameter of the ferromagnetic sleeve 11 is not smaller than the outer diameter of the locking sleeve 2 of the metal clip, when the ferromagnetic sleeve 11 is close to the locking sleeve 2 of the metal clip, the ferromagnetic sleeve 11 moves to the front of the locking sleeve 2 and fixes the locking sleeve 2 under the pulling action of magnetic force. Preferably, the sum of the lengths of the first guide sleeve 10 and the ferromagnetic sleeve 11 is not greater than the length of the locking sleeve 2. Thereby avoiding interference to the opening of the two clamps of the metal clamp.

Further preferably, as shown in fig. 3, a limiting cavity 21 for limiting the top rod 13 is arranged inside the second guide sleeve 12, the limiting cavity 21 is eccentrically arranged in the second guide sleeve 12, the inner diameter of the limiting cavity 21 is smaller than the inner diameters of the outer pipeline 14 and the strong magnetic sleeve 11, and the length of the second guide sleeve 12 is twice that of the locking sleeve 2. Thereby enabling the second guide sleeve 12 to guide the movement of the plunger 13. Preferably, the inner diameter of the limiting cavity 21 is slightly larger than the diameter of the top rod 13, so that a clearance fit is formed between the top rod 13 and the second guide sleeve 12. At the same time, the axis of the limiting cavity 21 is not in the same line with the axes of the strong magnetic sleeve 11 and the outer pipe 14, so that the top rod 13 can be extended in an eccentric mode when extending out of the second guide sleeve.

It is further preferred that the inner diameter of the outer pipe 14 is larger than the inner diameter of the second guiding sleeve 12 and smaller than the inner diameter of the ferromagnetic sleeve 11. Preferably, the outer line 14 may be a spring tube which functions to insert the actuating portion through the endoscopic biopsy aperture to the location of the metal clip within the patient's alimentary canal and to allow the medical personnel to operate externally through the operating portion.

Preferably, as shown in FIG. 2, a protective tube 16 and a positioning cap 17 are attached to the proximal end of the outer tubing 14. The sheath 16 and positioning cap 17 have an interior cavity therein that allows the drive wire 15 to move back and forth. The protection tube 16 serves to protect the outer line. The positioning cap is used for limiting the sliding block 18. Preferably, a sliding handle 19 is connected to the proximal end of the positioning cap 17, and a slider 18 is sleeved on the sliding handle 19 and can slide back and forth along the length direction of the sliding handle 19. When the slider 18 slides downwards, i.e. the slider 18 moves to the distal end of the sliding handle 19, the slider 18 drives the drive wire and the ejector rod out and acts on the movable shaft of the metal clip.

Preferably, the diameter of the tip rod 13 is larger than the diameter of the drive wire 15. Preferably, the length of the plunger 13 and the drive wire 15 is at least such that when the slider 18 is slid to the distal most end of the sliding handle 19, the distal end of the plunger 13 extends half the way inside the ferromagnetic sleeve 11, and when the slider 18 is slid to the proximal most end of the sliding handle 19, the distal end of the plunger 13 is positioned within the lumen of the outer wire 14. Preferably, the diameter of the plunger 13 is such that it extends into the interior of the locking sleeve 2. Preferably, the diameter of the top rod 13 is smaller than the distance between the two ends of the movable shaft 4 and the two clamping pieces sleeved at the middle part of the movable shaft 4, so that the top rod 13 which is eccentrically stretched out can act on the movable shaft 4, the movable shaft 4 is propped against the top rod 13 and pushed forward, so that the arc-shaped sliding grooves 5 of the two clamping pieces 1 move forward, the pin shafts move from the far ends of the arc-shaped sliding grooves 5 to the near ends, the two clamping pieces 1 can be further opened, the metal clamp is released, and then the metal clamp is fixed and taken out of the body by utilizing the magnetic action of the strong magnetic sleeve, so that the influence on the health of a human body is effectively avoided.

In the description of the present invention, 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," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. 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 invention, 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 either fixedly connected, detachably connected, or integrally connected, for example; 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 invention can be understood as appropriate by those of ordinary skill in the art.

The foregoing is merely illustrative of the present invention, and the present invention 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 invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A releaser for releasing a metal clip, characterized by comprising an operation part (20), an outer tube (14) and an action part (30), wherein one end of the outer tube (14) is connected with the operation part (20), the other end is connected with the action part (30), the operation part (20) comprises a sliding block (18) and a driving wire (15), the sliding block (18) is connected with one end of the driving wire (15), the other end of the driving wire (15) penetrates through an inner cavity of the outer tube (14) to extend towards the direction of the action part (30), the action part (30) comprises a top rod (13) which is positioned at the tail end of the driving wire (15) and is connected with the driving wire (15), and under the action of the operation part (20), the driving wire (15) can drive the top rod (13) to move towards the distal direction and acts on a movable shaft (4) of the metal clip, so that the movable shaft (4) moves towards the distal end along a sliding rail of the inner wall of a locking sleeve (2) to open two clamping pieces (1) of the metal clip; the action part (30) further comprises a first guide sleeve (10), a strong magnetic sleeve (11) and a second guide sleeve (12) which are sequentially connected with the far end of the outer pipe line (14) from far to near, wherein the strong magnetic sleeve (11) is positioned between the first guide sleeve (10) and the second guide sleeve (12), and the second guide sleeve (12) is connected with the outer pipe line (14).

2. The releaser according to claim 1, characterized in that the first guiding sleeve (10) is conical with an increasing inner diameter from the connection with the ferromagnetic sleeve (11).

3. The releaser according to claim 2, characterized in that the outer wall of the first guiding sleeve (10) is inclined outwards from the connection with the ferromagnetic sleeve (11) by an angle of 10 °, the length of the first guiding sleeve (10) being 2/5 of the length of the locking sleeve (2).

4. The releaser according to claim 1, characterized in that the ferromagnetic sleeve (11) is a sleeve structure having a strong magnetic property to the locking sleeve (2), and that the inner diameter of the ferromagnetic sleeve (11) is not smaller than the outer diameter of the locking sleeve (2) of the metal clip, and that the sum of the lengths of the first guiding sleeve (10) and the ferromagnetic sleeve (11) is not larger than the length of the locking sleeve (2).

5. The releaser according to claim 1, characterized in that a limiting cavity (21) for limiting the top rod (13) is arranged inside the second guide sleeve (12), the limiting cavity (21) is eccentrically arranged in the second guide sleeve (12), the inner diameter of the limiting cavity (21) is smaller than the inner diameters of the outer pipe line (14) and the strong magnetic sleeve (11), and the length of the second guide sleeve (12) is twice the length of the locking sleeve (2).

6. The releaser according to claim 1, characterized in that the outer wire (14) has an inner diameter which is larger than the inner diameter of the second guiding sleeve (12) and smaller than the inner diameter of the ferromagnetic sleeve (11), and that a protective tube (16) and a positioning cap (17) are connected to the proximal end of the outer wire (14).

7. The releaser according to claim 6, characterized in that the protective tube (16) and the positioning cap (17) have an inner cavity therein allowing the drive wire (15) to move back and forth.

8. The releaser according to claim 6, characterized in that a sliding handle (19) is connected to the proximal end of the positioning cap (17), and the slider (18) is sleeved on the sliding handle (19) and can slide back and forth along the length direction of the sliding handle (19).

9. The release according to claim 1, characterized in that the diameter of the top bar (13) is larger than the diameter of the drive wire (15), the length of the top bar (13) and the drive wire (15) being at least such that the distal end of the top bar (13) can extend to half the length inside the ferromagnetic sleeve (11) when the slider (18) is slid to the most distal end of the sliding handle (19).