Clip applier head mechanism with limiting device and continuous clip applier applying clip applier head mechanism

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a clip applier head mechanism with a limiting device and a continuous clip applier applying the clip applier head mechanism. The utility model provides a clip applier head mechanism with a limiting device, which aims at solving the problem that in the prior art, a clip applier clamp is easy to age, the opening angle is too large, and the clip applier cannot normally clamp the clamp, and comprises the clip applier, a sliding sleeve and a push rod, the push rod pushes the sliding sleeve to slide, and the sliding sleeve extrudes the clip applier to enable the head of the clip applier to be opened and closed; the forceps holder fixing device comprises a forceps holder fixing sleeve which is parallel to one side of the opening and closing direction of the forceps holder and is tightly attached to the forceps holder, the forceps holder fixing sleeve is connected with a limiting mechanism, and the limiting mechanism limits the outward expansion trend of the forceps holder in the maximum clamping state and ensures that the forceps holder can stably clamp the forceps holder. The utility model further provides an integral scheme of the running clip applier applying the clip head mechanism.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, especially relates to a clip applier jaw head mechanism with limiting device and the continuous clip applier of application of the jaw head mechanism. BACKGROUND

[0002] The clip applier is used for clamping blood vessels in minimally invasive surgery, and the blood vessels are cut off by the operation of the jaw head. The common hemostatic clip is generally elastic and can be clamped by the jaw head in the open state. The tension can easily cause the jaw head to be squeezed for a long time, exceeding the predetermined maximum working range. At the same time, the long-term opening and closing of the jaw head can also cause aging problems, causing the maximum opening angle of the jaw head to increase. The over-range opening of the jaw head can easily cause the loss of the clamping of the hemostatic clip and the clip falling failure.

[0003] For example, a continuous clip applier is disclosed in a Chinese invention patent [application number: CN202111376487.X]. The invention includes a clip applier shell, a jaw head push rod connected to the clip applier shell, and a jaw head provided at one end of the jaw head push rod. Moving the jaw head push rod can drive the jaw head to open or clamp. The clip applier shell is provided with a clip mounting structure, and a first feeding mechanism and a second feeding mechanism are also provided. The driving handle pushes the push structure into the first feeding space through the first feeding mechanism, and the driving handle pushes the push structure into the second feeding space through the second feeding mechanism. The invention can effectively reduce the amplitude of the automatic pop-up action of the tissue clip when the tissue clip is pushed out, and then slowly clamps to completely close by using the second feeding mechanism, so it is more suitable for the tissue clip that automatically pops up when it is pushed out.

[0004] Although the invention uses a two-step clamping method to improve the stability of the tissue clip that automatically pops up when it is pushed out, it still does not solve the problem that the maximum opening angle of the jaw head is too large when it is used for a long time, which can easily cause unstable clamping. SUMMARY

[0005] The utility model aims at above -mentioned problem, provides a kind of clip applier jaw head mechanism with limiting device, to realize the prevention that jaw head over-range opens.

[0006] The utility model further provides a kind of continuous clip applier scheme of application of the clip applier jaw head mechanism with limiting device.

[0007] The utility model, including clamp, sliding sleeve and push rod, the push rod pushes the sliding sleeve to slide, the sliding sleeve extrudes clamp and makes its head open and close;The utility model further includes clamp fixing sleeve that is in close contact with clamp on the side parallel to the opening and closing direction of clamp, the clamp fixing sleeve is connected with limiting mechanism, and the limiting mechanism limits the tendency of the outer opening of clamp after maximum clamping state.

[0008] Preferably, the limiting mechanism is a protrusion connected to the clamping fixing sleeve and extending perpendicularly to the opening direction of the clamp.

[0009] As another conceivable implementation, the limiting mechanism is a half-opened sliding groove parallel to the opening and closing direction of the clamp, and the clamp is provided with a protruding column which can slide in the half-opened sliding groove and abut against the edge of the sliding groove in the maximum clamping state.

[0010] Specifically, the clamp comprises a clamping head and a clamping strip part which is connected to the clamping head and has a width decreasing in sequence away from the clamping head, and the sliding sleeve slides towards the clamping head to press the clamping strip part and drive the clamping head to open and close.

[0011] Preferably, the clamping strip part is provided with at least one stopper which is pressed by the sliding sleeve to drive the clamping strip part to close or open.

[0012] The utility model also provides a continuous application of the above-mentioned clip applier technical scheme of the clamp head mechanism with the limiting device, in addition to the components contained in the clamp head mechanism, further includes handle part, push clip mechanism and skeleton main part, the handle part drives the push clip mechanism to push out the clip and drives the push rod to make the sliding sleeve press the clamp to open and close, the clamp fixing sleeve includes the clip part and the plug-in part, the plug-in part is inserted in the skeleton main part, the push clip mechanism realizes the clip sending in the clip part.

[0013] Further, the push clip mechanism includes a push clip rod and a clip sleeve body, the clip sleeve body is embedded in the skeleton main part and contains the clip, the push clip rod is slidably fixed outside the skeleton main part and is provided with a push head in the clip part, the push head is bent towards the inside of the skeleton main part, and the push head pushes the clip to the clamp through the clip part.

[0014] Preferably, a clip withdrawing opening is arranged between the clip part and the plug-in part.

[0015] Preferably, the push rod and the push clip rod are slidably fixed on the two sides of the skeleton main part respectively, the clamp is clamped between the push rod and the skeleton main part, and a sleeve pipe is arranged outside the push rod and the push clip rod.

[0016] Preferably, the push rod and the sliding sleeve are plugged together, and the push rod and the sliding sleeve jointly clamp the clamp on one side.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The utility model discloses a limiting mechanism arranged near the clamp to prevent the clamp from opening too wide, which can ensure that the opening range of the clamp always maintains the state of clamping the hemostatic clip and fundamentally solves the failure of the continuous clip applier due to the overlarge opening angle of the clamp caused by the aging of the clamp after the clip is ejected for a long time. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole schematic view of the continuous clip applier of the utility model;

[0020] Figure 2 It is Figure 1 Partial structure explosion map;

[0021] Figure 3 It is Figure 2 Local enlarged view;

[0022] Figure 4 It is Figure 2 Another view in the state;

[0023] Figure 5 It is the schematic view of the clamp fixing sleeve and clamp of the utility model;

[0024] Figure 6 It is Figure 2 Further explosion map in the state;

[0025] In the drawing: clamp 1, sliding sleeve 2, push rod 3, clamp fixing sleeve 4, limiting mechanism 5, convex column 6, blocking piece 7, handle part 8, push and clamp mechanism 9, skeleton main body 10, clamp head 11, clamp strip part 12, sleeve 13, out of clamp part 41, plug-in part 42, out of clamp opening 43, convex 51, sliding groove 52, push and clamp rod 91, push head 911, clamp sleeve 92. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0027] Embodiment 1: the utility model is a kind of clamp head mechanism of clip applier with limiting device, as shown in Fig. Figure 1 , 2 , 3, including clamp 1, sliding sleeve 2 and push rod 3, the push rod 3 pushes sliding sleeve 2 to slide, and the sliding sleeve 2 extrudes clamp 1 to make its head open and close;The utility model is innovative in that the utility model is provided with clamp fixing sleeve 4 that is tightly attached to clamp 1 on the side of the opening and closing direction of parallel clamp 1, the clamp fixing sleeve 4 is connected with limiting mechanism 5, and the limiting mechanism 5 limits the tendency of clamp 1 to open out after being in the maximum holding state.

[0028] When using, the limiting mechanism 5 of clamp fixing sleeve 4 stably blocks the opening angle of clamp 1 exceeding the clamping range of hemostatic clip in the initial state of normally opening clamp 1, to ensure that hemostatic clip can be clamped at all times.

[0029] Specifically, limiting mechanism 5 is convex 51 that is connected to clamp fixing sleeve 4 and tightly attached to the head of clamp 1 and extends perpendicularly to the opening direction of clamp 1. The convex 51 can block clamp 1 from continuing to open out after reaching the maximum holding opening angle.

[0030] Preferably, the clamp 1 comprises a clamp head 11 and a clamp strip part 12 with a width gradually decreasing away from the clamp head 11, and the sliding sleeve 2 slides towards the clamp head 11 to press the clamp strip part 12 and drive the clamp head 11 to open / close.

[0031] Preferably, as shown in the drawings, Figure 2 The clamp strip part 12 is provided with at least one stop piece 7, which is pressed by the sliding sleeve 2 to drive the clamp strip part 12 to close / open.

[0032] The utility model provides a kind of continuous application of the above-mentioned clamp applier clamp head mechanism scheme of limiting device, in addition to the above structure, still include handle part 8, push clamp mechanism 9 and skeleton main body 10, the handle part 8 asynchronous drives push clamp mechanism 9 and drives push rod 3 to make sliding sleeve 2 extrude clamp 1 open and close, the clamp fixed sleeve 4 includes out of clip part 41 and splicing part 42, the splicing part 42 is spliced in skeleton main body 10, the push clamp mechanism 9 realizes clip sending in out of clip part 41.

[0033] Preferably, the push clamp mechanism 9 includes a push clamp rod 91 and a clip sleeve 92, the clip sleeve 92 is embedded in the skeleton main body 10 and contains a clip, the push clamp rod 91 is slidingly fixed outside the skeleton main body 10 and has a push head 911 at the out of clip part 41, the push head 911 is bent inwardly to the skeleton main body 10, and the push head 911 pushes the clip to the clamp 1 through the out of clip part.

[0034] Preferably, a clip returning opening 43 is provided between the out of clip part 41 and the splicing part 42, which can drop from the bottom in case of failure of the push clip.

[0035] Preferably, the push rod 3 and the push clamp rod 91 are slidingly fixed on both sides of the skeleton main body 10, the clamp 1 is clamped between the push rod 3 and the skeleton main body 10, and a sleeve 13 is provided outside the push rod 3 and the push clamp rod 91 for overall limiting installation.

[0036] Preferably, the push rod 3 and the sliding sleeve 2 are spliced, and the push rod 3 and the sliding sleeve 2 jointly clamp the clamp 1 on one side.

[0037] The working principle of the embodiment is as follows: Figure 2 、 4, 6, the skeleton body 10 is as a whole base, the content clamping sleeve 92 is used for reserving the clamp, the skeleton body two sides are respectively fixed with the push clamping rod 91 and the push rod 3 by sheet metal parts.The push rod 3 and the sliding sleeve 2 are commonly clamped in the pincers fixed sleeve 4 on one side and the other side, the pincers fixed sleeve 4 is clamped on the other side and is connected with the skeleton body 10 through the insertion part 42.The sleeve pipe 13 is used for the component between the assembly limiting handle part 8 and the pincers 1.The operation handle part 8 simultaneously operates the push clamping rod 91 and the push rod 3, realizes the asynchronous completion of the push rod 3 and pushes the sliding sleeve 2 and extrudes the clamping strip part 12 to make the clamp head 11 clamp the clamp on the pincers 1 and makes the push clamping rod 91 complete the sending clamp from the clamp sleeve 92 to the pincers 1 through the out-clamping part 41.The pincers 1 are in contact with the convex 51 when being opened to the maximum angle, i.e.the initial holding angle, and cannot be expanded outward, which ensures that the clamp can be held.The setting of the retreat clamp opening 43 also facilitates the operator to quickly take out the waste clamp due to the clamp failure caused by the clamp itself.

[0038] Embodiment 2: The difference between this embodiment and embodiment 1 is that, as shown in the figure, the limiting device adopts the mode that the half-open slot 52 for limiting is opened in the pincers fixed sleeve 4 and the convex column 6 on the pincers 1 is matched to limit the maximum opening angle of the pincers 1.It is easy to think that, compared with embodiment 1, the height of the pincers fixed sleeve 4 of embodiment 2 will be higher to achieve the same limiting effect under the condition that the specifications of the pincers 1 are consistent. Figure 5

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0040] Although the terms such as pincers 1, sliding sleeve 2, push rod 3, pincers fixed sleeve 4, limiting mechanism 5, convex column 6, blocking piece 7, handle part 8, push clamping mechanism 9, skeleton body 10, clamp head 11, clamping strip part 12, sleeve pipe 13, out-clamping part 41, insertion part 42, retreat clamp opening 43, convex 51, slot 52, push clamping rod 91, push head 911, clamp sleeve 92, etc. are used more in this paper, but the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present application; interpreting them as any kind of additional limitation is contrary to the spirit of the present application.​

Claims

1. A clip applier head mechanism with a limiting device, comprising a clip (1), a sliding sleeve (2) and a push rod (3), the push rod (3) pushes the sliding sleeve (2) to slide, the sliding sleeve (2) extrudes the clip (1) to open and close the head of the clip (1); characterized in that: Also included is a parallel clamp (1) opening and closing direction one side close to the clamp (1) of the clamp fixed sleeve (4), the clamp fixed sleeve (4) is connected to the limiting mechanism (5), the limiting mechanism (5) limits the clamp (1) after the maximum holding state of the trend of opening.

2. The clip applier jaw mechanism with a stop device of claim 1, wherein: The limiting mechanism (5) is a convex (51) connected to the clamp fixed sleeve (4) and extending perpendicular to the opening direction of the clamp (1).

3. The clip applier jaw mechanism with a stop device of claim 1, wherein: The limiting mechanism is a half-open slot (52) parallel to the opening and closing direction of the clamp (1), the clamp (1) is provided with a convex column (6), the convex column (6) can slide in the half-open slot (52) and abut against the edge of the slot (52) in the maximum holding state of the clamp (1).

4. The clip applier jaw mechanism with a stop device of claim 2, wherein: The clamp (1) includes a clamp head (11) and a clamp strip part (12) whose width decreases in sequence away from the clamp head (11), the sliding sleeve (2) slides towards the clamp head (11) to extrude the clamp strip part (12) and drive the clamp head (11) to open and close.

5. The clip applier jaw mechanism with a stop device of claim 4, wherein: The clamp strip part (12) is provided with at least one stop piece (7), which is extruded by the sliding sleeve (2) to drive the clamp strip part (12) to close / open.

6. A continuous feed clip applier using the clip applier jaw mechanism with a stop device as claimed in claim 1, characterized in that: Also included are a handle part (8), a push clamp mechanism (9) and a skeleton main body (10), the handle part (8) drives the push clamp mechanism (9) to push out the clamp and drives the push rod (3) to make the sliding sleeve (2) extrude the clamp (1) to open and close, the clamp fixed sleeve (4) includes an ejection part (41) and a plug-in part (42), the plug-in part (42) is plugged into the skeleton main body (10), and the push clamp mechanism (9) realizes the sending of the clamp in the ejection part (41).

7. The sequential stapling clip applier of claim 6, wherein: The push clamp mechanism (9) includes a push clamp rod (91) and a clamp sleeve body (92), the clamp sleeve body (92) is embedded in the skeleton main body (10) and contains the clamp, the push clamp rod (91) is slidingly fixed outside the skeleton main body (10) and is provided with a push head (911) in the ejection part (41), the push head (911) is bent towards the inside of the skeleton main body (10), and the push head (911) pushes the clamp to the clamp (1) through the ejection part.

8. The sequential deployment clip applier of Claim 7, wherein: The ejection part (41) and the plug-in part (42) are provided with a clamp withdrawal opening (43).

9. The sequential deployment clip applier of Claim 8, wherein: The push rod (3) and the push clamp rod (91) are slidingly fixed on both sides of the skeleton main body (10), the clamp (1) is clamped between the push rod (3) and the skeleton main body (10), and the push rod (3) and the push clamp rod (91) are provided with a sleeve pipe (13) outside. ​ 10. The sequential deployment clip applier of Claim 9, wherein: The push rod (3) and the sliding sleeve (2) are plugged together, and the push rod (3) and the sliding sleeve (2) jointly clamp the clamp (1) on one side.

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