CN111904527A

CN111904527A - Clip applier

Info

Publication number: CN111904527A
Application number: CN202010806543.8A
Authority: CN
Inventors: 吕国玉; 曹侠; 王大川; 王鹏; 汪龙
Original assignee: Sichuan National Nano Technology Co ltd
Current assignee: Sichuan National Nano Technology Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-11-10

Abstract

The invention provides a clip applier, which belongs to the technical field of medical instruments and comprises a binding clip, a ligation clip and a handle assembly, wherein the ligation clip is arranged in the binding clip, and the handle assembly is connected with the binding clip and used for driving the binding clip to open and close; the binding clip comprises an upper binding clip body and a lower binding clip body, wherein a jaw is formed between the upper binding clip body and the lower binding clip body and used for installing a ligation clip, and the upper binding clip body and the lower binding clip body are connected in a clamping manner; an auxiliary rebounding mechanism of the ligation clip is also arranged in the jaw; the auxiliary rebounding mechanism of the ligating clip is an arc-shaped spring piece vertically installed in the jaw, and the natural opening and closing angle of the upper end and the lower end of the spring piece is not larger than the maximum natural opening and closing angle of the ligating clip. The clip applier can ensure that the ligation clip can be opened and closed quickly and accurately during the operation in vivo, avoids the situations that the surgery time is prolonged and the surgery fatigue is increased because doctors need to further control the clip applier carefully due to insufficient resilience force of the ligation clip, and is high in use comfort.

Description

Clip applier

Technical Field

The invention relates to the technical field of medical instruments, in particular to a clip applier which is used for being matched with a ligation clip in a surgical operation, particularly a laparoscopic operation.

Background

In surgical operations, laparoscopic surgery is a newly developed minimally invasive method, has the advantages of small incision, small pain, quick recovery and the like, is popular with patients and also becomes the inevitable trend of the development of modern surgical operations. During surgery, it is often necessary to perform ligation of blood vessels or other tubular tissue, such as bile ducts and the like. The ligature clamp is widely applied to laparoscopic surgery at present, and the clip applier is a necessary tool for applying the ligature clamp, namely in the laparoscopic surgery, the clip applier is firstly used for clamping the ligature clamp, then the clip applier is stretched into an operation position needing to be subjected to ligature operation through an endoscope catheter or directly through an operation incision, and then the clip applier is used for controlling the ligature clamp so as to ligate and seal tubular tissues.

As is known, in the operation process, time is necessary in minutes and seconds, and the current medical instruments aim to save the operation time of doctors and reduce the fatigue of the doctors. In the laparoscopic surgery process, when the forceps enter the surgical site in a patient body, the movable trigger of the forceps needs to be pulled to a half stroke to enable the jaws to be in a half-closed state, so that the outer diameter of the jaws is smaller than the diameter of an outer tube shell, after the surgical site is reached, a doctor needs to slightly loosen the movable trigger of the forceps to enable the jaws to be opened, and the ligation clamp at the position of the jaws is opened along with the resilience force of the ligation clamp so as to enable the ligation clamp to be aligned to the tubular tissue to be ligated. However, in actual operation, the resilience force of the ligation clip is often insufficient and the ligation clip cannot rebound to a proper opening angle, so that the tubular tissue cannot be clamped and ligated, and a doctor needs to further finely control the pulling direction and force of the movable trigger of the clip applier to adjust the ligation clip to the proper opening angle, thereby lengthening the operation time and increasing the operation fatigue of the doctor.

Meanwhile, when the doctor ligates the tubular tissues such as blood vessels and the like by using the clip applier, after the ligation angle is adjusted, the movable handle of the clip applier is gripped, the movable trigger is pulled, and the handle and the movable trigger are closed to proper positions, so that the ligation clip finishes ligation and closure. In the process of pulling the movable trigger, the movable handle is tightly propped against the inner side of the palm of the half fist-shaped doctor, namely the inner side of the palm provides a stress point for pulling the movable trigger. In the existing clip applier, a movable handle of the existing clip applier is often in a thin strip shape, and in the actual use process, firstly, the handle is easy to displace on the inner side of a palm due to the fact that the contact surface of the thin strip-shaped handle and the inner side of the palm is small, so that a doctor is unstable in pinching and holding the clip applier in the clip applier process, and the accuracy of clipping is affected; secondly, the pressure of the strip-shaped handle on the palm is concentrated, when a doctor operates the clip applier for a long time, muscles on the inner side of the palm are easy to generate fatigue and pressure pain due to the concentrated pressure, and the comfort level of the doctor during the operation is not improved.

Disclosure of Invention

The invention aims to provide a clip applier which can enhance the safety and convenience of the clip applier in the operation process and improve the comfort in use through reasonable and effective design of an auxiliary resilience mechanism and a handle component of a ligating clip.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the clip applier comprises a binding clip, a ligation clip and a handle component, wherein the ligation clip is arranged in the binding clip, and the handle component is connected with the binding clip and used for driving the binding clip to open and close; the binding clip comprises an upper binding clip body and a lower binding clip body, wherein a jaw is formed between the upper binding clip body and the lower binding clip body and used for installing a ligation clip, and the upper binding clip body and the lower binding clip body form clamping connection for the ligation clip; and an auxiliary rebounding mechanism of the ligation clip is also arranged in the jaw.

As a preferred technical scheme of the invention, the auxiliary rebounding mechanism of the ligating clip is an arc-shaped spring piece vertically installed in the jaw, and two ends of the spring piece are respectively detachably and fixedly connected to the inner sides of the upper binding clip and the lower binding clip; the spring piece is positioned behind the ligating clip, and the flexible hinge part of the ligating clip is always abutted against the middle part of the spring piece;

the natural opening and closing angle of the upper end and the lower end of the spring piece is not larger than that of the ligation clip.

As a preferred technical scheme, the natural opening and closing angle of the upper end and the lower end of the spring piece is 55-60 degrees, and the natural opening and closing angle of the ligating clip is 60-65 degrees.

As a preferred technical scheme of the invention, the natural opening and closing angle of the upper end and the lower end of the spring piece is consistent with the natural opening and closing angle of the ligating clip.

As a preferred technical scheme of the invention, the handle assembly comprises a movable trigger, a fixed handle, a clamp rod and a rotation control mechanism, wherein the movable trigger is rotationally connected with the fixed handle, and the rotation control mechanism is arranged at one end, close to the movable trigger, of the clamp rod; and a handle support pad is arranged on the outer side of the fixed handle.

As a preferred technical scheme of the invention, the handle support pad is integrally an arc-shaped sheet and is fixedly attached to an arc-shaped curve on the outer side of the fixed handle; the handle support pad is provided with concave curves at four corners.

As a preferred technical scheme of the invention, the inner side of the movable trigger and the outer side of the handle support pad are coated with bacteriostatic anti-slip silica gel layers.

As a preferred technical solution of the present invention, the ligating clip is V-shaped, and includes a first clip arm, a second clip arm, and a flexible hinge connecting the first clip arm and the second clip arm, wherein a lock hook is disposed at an end of the first clip arm, a lock body is disposed at an end of the second clip arm, the lock hook corresponds to the lock body, and the lock body can be fixed in the lock hook in a clamping manner.

As a preferred technical solution of the present invention, anti-slip teeth matched with each other are disposed on inner sides of the first clamping arm and the second clamping arm.

As a preferable technical scheme of the invention, the anti-slip teeth are three-dimensional concave-convex anti-slip teeth which can prevent the ligation clip from sliding in any direction.

As a preferred embodiment of the present invention,

the front end of the inner side of the upper tong head is provided with a first positioning hole, and the first clamping arm is provided with a first positioning block corresponding to the first positioning hole; a second positioning hole is formed in the front end of the inner side of the lower tong head, and a second positioning block corresponding to the second positioning hole is arranged in the second clamping arm; the binding clip clamps the first positioning block through the first positioning hole, and the second positioning hole clamps the second positioning block to clamp and fix the ligation clip.

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

1. the clip applier is provided with the auxiliary rebounding mechanism of the ligating clip, in the process of laparoscopic surgery, a doctor firstly installs the ligating clip in a clip head, then slightly presses a movable trigger of the clip applier to a half stroke to enable a jaw to be in a half-closed state by operating a handle component, after the clip applier is pushed into a surgical site in a patient body, releases the movable trigger of the clip applier to relieve the pressure from the handle component on the clip head, at the moment, an arc-shaped spring leaf in the jaw rebounds to a natural state, namely, the natural opening and closing angle rebounds to a maximum value under a non-pressure state, in the process, if a flexible hinge of the ligating clip normally works, the ligating clip also rebounds to the maximum opening and closing angle actively, if the flexible hinge of the ligating clip breaks down, namely, the self rebounding force is insufficient, the ligating clip is forced to rebound under the driving of the auxiliary rebounding mechanism of the ligating clip-arc-shaped spring leaf, finally rebounds to the maximum opening and closing angle, so that the ligation clamp can conveniently clamp and ligate the tubular tissue. Therefore, the invention can ensure the rapid and accurate opening and closing of the ligation clip during the operation in vivo, and avoids the situations that the surgery time is prolonged and the surgery fatigue is increased because doctors need to further finely control the clip applying forceps due to insufficient resilience force of the ligation clip.

2. When the ligation clip is used, the flexible hinge part of the ligation clip is always abutted against the middle part of the spring piece. In the clamping stage, the flexible hinge part of the ligation clamp gives an acting force to the spring piece, so that the spring piece can overcome the initial elastic force, and the spring piece is easier to deform under the action of the applied force of the clamp. Meanwhile, the spring leaf also provides a reaction force for the ligating clip, so that a function similar to a fulcrum is provided, the flexible hinge part of the ligating clip is favorably stabilized, the flexible hinge part gradually moves backwards along with the middle part of the spring leaf in the closing process of the ligating clip, the hand feeling feedback of a doctor in the operation process is given, and the force is convenient to master; finally, in the process of releasing the ligature clamp after the operation is finished, the spring leaf gives a pushing force to the flexible hinge part of the ligature clamp, so that the ligature clamp can be released quickly in an auxiliary mode, and the applying clamp is reset.

3. The handle support pad is arranged at the fixed handle of the clip applier, so that the temperature of the clip applier held by a doctor is guaranteed, and the comfort level of the doctor is improved.

4. The inner sides of the first clamping arm and the second clamping arm of the ligation clamp are provided with the three-dimensional concave-convex anti-slip teeth which are matched with each other, so that the ligation clamp can be prevented from sliding in any direction, and doctors can safely and quickly seal and prick various tubular tissues.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a left side plan view of the handle pad of fig. 1.

Fig. 3 is a schematic view of an assembly structure of the binding clip and the binding clip of the present invention.

Fig. 4 is a schematic cross-sectional view of fig. 3.

Fig. 5 is a schematic view of one embodiment of a ligating clip structure of the invention.

Fig. 6 is a schematic view of another embodiment of a ligating clip structure according to the invention.

Fig. 7 is a schematic structural diagram of the binding clip of the present invention.

Reference numerals:

1. the clamp comprises a clamp head, 11-an upper clamp head, 11a, a first positioning hole, 12-a lower clamp head, 12a, a second positioning hole, 13-a clamp opening, 14 and a clamping fixing hole;

2. the ligation clip 21, the first clip arm 21a, the second positioning block 21b, the lock hook 22, the second clip arm 22a, the second positioning block 22b, the lock body 23 and the flexible hinge;

3. the anti-bacterial and anti-skid wrench comprises a handle assembly, 31-a movable trigger, 32-a fixed handle, 33-a clamp rod, 34-a rotation control mechanism, 35-a handle support pad and 36-an anti-bacterial and anti-skid silica gel layer;

4. a spring plate.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "back", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 4, the present invention provides a clip applier, which includes a binding clip 1, a ligation clip 2 and a handle component 3, wherein the ligation clip 2 is installed in the binding clip 1, and the handle component 3 is connected to the binding clip 1 to drive the binding clip 1 to open and close; the binding clip 1 comprises an upper binding clip 11 and a lower binding clip 12, a jaw 13 is formed between the upper binding clip 11 and the lower binding clip 12 and used for mounting the ligation clip 2, and the upper binding clip 11 and the lower binding clip 12 form clamping connection for the ligation clip 2; still be equipped with the supplementary resilience mechanism of ligature clamp in keeping silent 13, in this embodiment, the supplementary resilience mechanism of ligature clamp is a vertical installation in keeping silent 13 in arc spring leaf 4, make by spring steel. The spring leaf 4 set up in behind the ligature clamp 2 and mutual butt, just the natural angle of opening and shutting at spring leaf 4 upper and lower both ends is not more than the biggest natural angle of opening and shutting of ligature clamp 2.

The clip applier is mainly used for surgical operations, particularly laparoscopic operations, and when the clip applier is used, a doctor firstly installs the ligation clip 2 in the forceps head 1 and then controls the handle component 3 to achieve the closing purpose. Referring to fig. 1, in the present embodiment, the handle assembly 3 includes a movable trigger 31, when in use, the movable trigger 31 of the clip applier is slightly pressed to a half stroke, so that the jaws 13 are in a half-closed state, and the ligation clip 2 is in a half-compressed state under an inward pressure, at this time, an opening angle between the two arms is about 30 ° so as to reduce the outer diameter of the forceps head 1, and the forceps head 1 is extended into an operation site of a patient through an endoscope catheter or an operation incision and then continuously applies force until the two clamping arms of the ligation clip 2 are closed; after the operation is finished, the movable trigger 31 of the clip applier is released, the pressure from the handle assembly 3 on the clip head 1 is relieved, at the moment, the arc-shaped spring piece 4 in the jaw 13 rebounds to drive the upper clip head 11 and the lower clip head 12 to separate from the upper end and the lower end, and further the ligation clip 2 is driven to rebound to the maximum natural opening and closing angle. In this embodiment, the natural opening and closing angle of the upper end and the lower end of the spring piece 4 is 60 °, the natural opening and closing angle of the ligating clip 2 is 65 °, that is, the natural opening and closing angle of the ligating clip 2 is greater than the natural opening and closing angle of the upper end and the lower end of the spring piece 4, so that the spring piece 4 has a certain constraint force on the ligating clip 2.

Referring to fig. 1 to 2, the handle assembly 3 of the clip applier provided by the present invention includes a movable trigger 31, a fixed handle 32, a clip lever 33 and a rotation control mechanism 34, wherein the movable trigger 31 is rotatably connected to the fixed handle 32, the rotation control mechanism 34 is disposed at one end of the clip lever 33 close to the movable trigger 31, and the rotation control mechanism 34 can be used to rotate the clip head 1, and the structure and the working principle of the rotation control mechanism 34 are the prior art in the field, and are not described in detail in this embodiment; a handle support pad 35 is arranged on the outer side of the fixed handle 32; as shown in fig. 2, the handle pad 35 is a curved arc piece integrally and fixedly attached to the outer arc curve of the fixed handle 32; handle support pad 35 four corners department still is equipped with the indent curve, and the doctor is when using, and handle support pad 35 top is tight and is half palm inboard of clenching the fist form in the doctor, provides the stress surface for the knot of activity trigger 31, because handle support pad 35 is curved surface arc piece, has improved greatly with the inboard area of contact of palm, makes the doctor hold between the fingers of executing the clamp and holds more stably, has also avoided the concentrated pressure of handle to the palm, has improved doctor's use comfort. Meanwhile, in the embodiment, the antibacterial and anti-slip silica gel layers 36 are coated on the inner side of the movable trigger 31 and the outer side of the handle support pad 35, so that the holding stability of the clamp applying forceps by a doctor can be further improved, and the accuracy of the clamping operation is ensured.

Referring to fig. 5, according to an embodiment of the ligation clip provided by the present invention, the ligation clip 2 is V-shaped, and includes a first clamping arm 21, a second clamping arm 22 and a flexible hinge 23 connecting the first clamping arm 21 and the second clamping arm 22, wherein a lock hook 21b is disposed at an end of the first clamping arm 21, a lock body 22b is disposed at an end of the second clamping arm 22, the lock hook 21b corresponds to the lock body 22b, and the lock body 22b can be fastened in the lock hook 21b, so that the ligation clip 2 seals and ligates tubular tissues such as blood vessels.

Correspondingly, a first positioning hole 11a is formed in the front end of the inner side of the upper binding clip 11, and a second positioning hole 12a is formed in the front end of the inner side of the lower binding clip 12; a first positioning block 21a corresponding to the first positioning hole 11a is arranged on the outer side of the first clamping arm 21, and a second positioning block 22a corresponding to the second positioning hole 12a is arranged on the outer side of the second clamping arm 22; the binding clip 1 clamps and positions the ligation clip 2 through the first positioning hole 11a and the second positioning hole 12a clamping the first positioning block 21a and the second positioning block 22 a.

Referring to fig. 6, the present invention provides another embodiment of a ligating clip. The ligating clip 2 is substantially similar in construction to that shown in fig. 5. In contrast, the first and

second positioning blocks

21a and 22a of the clip are respectively disposed on the front and rear sides of the first and

second clip arms

21 and 22, which is different from the case that the first and

second positioning blocks

21a and 22a of the clip 2 shown in fig. 5 are disposed on the outer sides of the first and

second clip arms

21 and 22.

Accordingly, the positions of the first positioning hole 11a of the upper bit 11 and the second positioning hole 12a of the lower bit 12 are changed according to the change of the ligation clip 2 shown in fig. 6. That is, it may be a single structure or a combined structure as follows.

When the ligating clip 2 is in the structure shown in fig. 5, the first positioning block 21a and the second positioning block 22a of the ligating clip 2 are disposed outside the first clamping arm 21 and the second clamping arm 22; at this time, the first positioning hole 11a of the upper bit 11 and the second positioning hole 12a of the lower bit 12 are respectively positioned at the inner sides of the upper bit 11 and the lower bit 12; see the structure of fig. 4 and 7.

When the ligation clip 2 has the structure shown in fig. 6, the first positioning block 21a and the second positioning block are provided in the ligation clip 2

The blocks 22a are respectively arranged at the front and rear sides of the first clamping arm 21 and the second clamping arm 22; at this time, the first positioning hole 11a of the upper bit 11 and the second positioning hole 12a of the lower bit 12 are respectively positioned on the front and rear sides of the upper bit 11 and the lower bit 12; see the structure shown in fig. 3.

In one embodiment, the arc spring piece 4 is bent to be arc towards the direction of the binding clip, as shown in fig. 4 and 7. In other embodiments, the curved spring plate 4 may also be curved toward the handle assembly 3. Two ends of the arc-shaped spring piece 4 are respectively detachably and fixedly connected to the inner side of the upper binding clip 11 and the inner side of the lower binding clip 12; specifically, spring piece clamping fixing holes are respectively formed in the inner side of the upper binding clip 11 behind the upper positioning hole 11a and in the inner side of the lower binding clip 12 behind the lower positioning hole 12 a.

According to the structure, the flexible hinge part of the ligation clip is always abutted against the middle part of the spring piece in the using process of the ligation clip. In the clamping stage, the flexible hinge part of the ligation clamp gives an acting force to the spring piece, so that the spring piece can overcome the initial elastic force, and the spring piece is easier to deform under the action of the applied force of the clamp. Meanwhile, the spring leaf also provides a reaction force for the ligating clip, so that a function similar to a fulcrum is provided, the flexible hinge part of the ligating clip is favorably stabilized, the flexible hinge part gradually moves backwards along with the middle part of the spring leaf in the closing process of the ligating clip, the hand feeling feedback of a doctor in the operation process is given, and the force is convenient to master; finally, in the process of releasing the ligature clamp after the operation is finished, the spring leaf gives a pushing force to the flexible hinge part of the ligature clamp, so that the ligature clamp can be released quickly in an auxiliary mode, and the applying clamp is reset.

The above embodiments describe a plurality of specific embodiments of the present invention, but it should be understood by those skilled in the art that various changes or modifications may be made to these embodiments without departing from the principle and spirit of the present invention, and these changes and modifications fall within the scope of the present invention.

Claims

1. The clip applier is characterized by comprising a binding clip, a ligation clip and a handle component, wherein the ligation clip is arranged in the binding clip, and the handle component is connected with the binding clip and used for driving the binding clip to open and close; the binding clip comprises an upper binding clip body and a lower binding clip body, wherein a jaw is formed between the upper binding clip body and the lower binding clip body and used for installing a ligation clip, and the upper binding clip body and the lower binding clip body form clamping connection for the ligation clip; and an auxiliary rebounding mechanism of the ligation clip is also arranged in the jaw.

2. The clip applier of claim 1, wherein:

the auxiliary rebounding mechanism of the ligating clip is an arc-shaped spring piece vertically arranged in the jaw, and two ends of the spring piece are respectively detachably and fixedly connected to the inner sides of the upper tong head and the lower tong head;

the spring piece is positioned behind the ligating clip, and the flexible hinge part of the ligating clip is always abutted against the middle part of the spring piece;

3. The clip applier according to claim 2, wherein a natural opening and closing angle of upper and lower ends of the spring plate is 55 ° -60 °, and a natural opening and closing angle of the ligating clip is 60 ° -65 °.

4. The clip applier of claim 1, wherein said handle assembly includes a movable trigger, a stationary handle, a clip lever, and a rotation control mechanism, said movable trigger being rotatably coupled to said stationary handle, said rotation control mechanism being disposed on an end of said clip lever proximate to said movable trigger; and a handle support pad is arranged on the outer side of the fixed handle.

5. The clip applier of claim 4, wherein said handle pad is integrally formed as an arcuate piece that is fixedly attached to an arcuate curve on the outside of said fixed handle; the handle support pad is provided with concave curves at four corners.

6. The clip applier of claim 1, wherein said ligating clip is V-shaped, including a first clip arm, a second clip arm, and a flexible hinge connecting said first clip arm and said second clip arm; the tip of first arm lock is equipped with the lock and colludes, the tip of second arm lock is equipped with the lock body, the lock colludes and the lock body corresponds, just the lock body can the joint be fixed in the latch hook.

7. The clip applier of claim 6, wherein said first and second clip arms are provided with complementary anti-slip teeth on the inner sides thereof.

8. The clip applier of claim 7, wherein said anti-slip teeth are solid concavo-convex anti-slip teeth.

9. The clip applier according to any one of claims 1 to 8, wherein:

the front end of the inner side of the upper tong head is provided with a first positioning hole, and the first clamping arm is provided with a first positioning block corresponding to the first positioning hole;

a second positioning hole is formed in the front end of the inner side of the lower tong head, and a second positioning block corresponding to the second positioning hole is arranged in the second clamping arm;

the binding clip clamps the first positioning block through the first positioning hole, and the second positioning hole clamps the second positioning block to clamp and fix the ligation clip.

10. The clip applier according to claim 4 or 5, wherein the inner side of said movable trigger and the outer side of said handle pad are coated with bacteriostatic and anti-slip silica gel layer.