阅读说明：本技术 一种组织夹及止血装置 (Tissue clamp and hemostasis device ) 是由 沈清 徐荣华 于 2020-06-17 设计创作，主要内容包括：本发明公开了一种组织夹及止血装置,属于医疗器械技术领域。本发明所提供的组织夹包括组织夹上臂和组织夹下臂,组织夹上臂的第一连接端和组织夹下臂的第二连接端可转动连接,组织夹上臂的第一闭合端和组织夹下臂的第二闭合端被配置为具有打开状态和闭合状态。该组织夹通过在组织夹上臂和组织夹下臂的转动连接处设置单向转动限位机构,从而能够将第一闭合端和第二闭合端限制在闭合状态,在极大程度上提高了组织夹闭合后的紧固性,避免了闭合不牢以及闭合后组织夹回弹打开现象的出现。本实施例所提供的止血装置能够释放组织夹,使用方便。(The invention discloses a tissue clamp and a hemostatic device, and belongs to the technical field of medical instruments. The tissue clamp provided by the invention comprises an upper tissue clamp arm and a lower tissue clamp arm, wherein a first connecting end of the upper tissue clamp arm and a second connecting end of the lower tissue clamp arm are rotatably connected, and a first closed end of the upper tissue clamp arm and a second closed end of the lower tissue clamp arm are configured to have an open state and a closed state. This tissue clamp sets up one-way rotation stop gear through the rotation junction that presss from both sides the upper arm at the tissue and press from both sides the lower arm to can improve the fastening nature of tissue clamp after closure to a great extent at closed state with first closed end and second closed end restriction, avoid closed firm and closed back tissue clamp to kick-back and open the appearance of phenomenon. The hemostatic device provided by the embodiment can release the tissue clamp, and is convenient to use.)

1. A tissue clip, comprising:

a tissue clamp body comprising a tissue clamp upper arm (1) and a tissue clamp lower arm (2), the tissue clamp upper arm (1) comprising a first connecting end and a first closing end, the tissue clamp lower arm (2) comprising a second connecting end and a second closing end, the first connecting end and the second connecting end being rotatably connected, the first closing end and the second closing end being configured to have an open state and a closed state;

the tissue clamp comprises a one-way rotation limiting mechanism (3), wherein the one-way rotation limiting mechanism (3) is arranged at the rotary connection position of an upper arm (1) of the tissue clamp and a lower arm (2) of the tissue clamp, so that the first closed end and the second closed end are limited in the closed state.

2. The tissue clip of claim 1,

one-way rotation limiting mechanism (3) includes first rack of falling (31) and tooth's socket (32), first rack of falling (31) with one of tooth's socket (32) sets up on tissue clamp upper arm (1), another setting is in on tissue clamp lower arm (2), first rack of falling (31) with tooth's socket (32) meshing.

3. The tissue clip of claim 2, further comprising:

the tilting prevention mechanism is used for preventing the first inverted rack (31) from tilting in a direction deviating from the inverted tooth groove (32).

4. The tissue clip of claim 3,

the tilting prevention mechanism is a pressing strip (6), one end of the pressing strip (6) is connected to the tissue clamp body, and the other end of the pressing strip is pressed against the free end of the first inverted rack (31).

5. The tissue clip of claim 3,

the first inverted rack (31) is a bidirectional inverted rack, two opposite side surfaces of the first inverted rack (31) are respectively provided with a first inverted tooth structure and a third inverted tooth structure, and the first inverted tooth structure is meshed with a second inverted tooth structure in the inverted tooth groove (32);

the anti-tilting mechanism is a second inverted rack (7), one end of the second inverted rack (7) is connected to the tissue clamp body, a fourth inverted tooth structure is arranged at the other end of the tissue clamp body, and the fourth inverted tooth structure is meshed with the third inverted tooth structure.

6. The tissue clip of claim 3,

the anti-tilting mechanism is a ring belt, the ring belt is fixed on the tissue clamp body and sleeved on a connecting part of the first inverted rack (31) and the inverted tooth groove (32), and the inner diameter of the ring belt is larger than the size of the connecting part.

7. The tissue clip of claim 1,

the unidirectional rotation limiting mechanism (3) comprises a limiting groove (33) and a limiting hook (34), the limiting hook (34) comprises a connecting arm (341) and an elastic arm (342), one end of the elastic arm (342) is connected with the connecting arm (341) in an acute angle, and the other end of the elastic arm is provided with a limiting flanging (343) which is turned outwards;

one of the limiting groove (33) and the connecting arm (341) is arranged on the upper arm (1) of the tissue clamp, the other is arranged on the lower arm (2) of the tissue clamp, the elastic arm (342) elastically presses against the inner wall surface of the limiting groove (33) and can move along the limiting groove (33) in the closing process of the tissue clamp body, and the limiting flanging (343) is configured to elastically press against the limiting groove (33) when the first closed end and the second closed end are in the opening state and is configured to stop against the end surface of the limiting groove (33) when the first closed end and the second closed end are in the closing state.

8. The tissue clip of claim 1,

one-way rotation limiting mechanism (3) includes spacing trip and spacing draw-in groove, one setting in both of spacing trip and spacing draw-in groove is in on tissue presss from both sides first clamping face (11) of upper arm (1), and another setting is in on tissue presss from both sides second clamping face (21) of underarm (2), spacing trip with spacing draw-in groove is configured to be in first closed end with joint when second closed end is in the closed condition.

9. The tissue clip of claim 1,

reinforcing bodies are arranged in the upper arm (1) of the tissue clamp and the lower arm (2) of the tissue clamp.

10. The tissue clip of claim 9,

the reinforcing body is of a filiform structure made of titanium.

11. The tissue clip of claim 1,

in the first closed end and the second closed end, one of them is provided with lock clasp (12), and the other is provided with hasp groove (22), lock clasp (12) can the joint in hasp groove (22).

12. The tissue clip of claim 1,

and the first closing end and the second closing end are both provided with a clamping mechanism (4), and the clamping mechanism (4) is used for being matched and connected with a jaw of the clip applier (100).

13. The tissue clip of claim 12,

the end part of the clamping mechanism (4) is convexly provided with an elastic needle structure (5) along the axial direction, and the elastic needle structure (5) is used for being clamped in a positioning groove (101) in the jaw.

14. The tissue clip of claim 1,

a first clamping tooth structure is arranged on a first clamping surface (11) of the upper arm (1) of the tissue clamp, and the first clamping tooth structure comprises a first clamping tooth convex block (13) and a first clamping tooth groove (14);

a second clamping tooth structure is arranged on a second clamping surface (21) of the tissue clamp lower arm (2), and the second clamping tooth structure comprises a second clamping tooth convex block (23) and a second clamping tooth groove (24);

the first closed end and the second closed end are configured such that, in the closed state, the second tooth clamping protrusion (23) is snapped into the first tooth clamping groove (14) and the first tooth clamping protrusion (13) is snapped into the second tooth clamping groove (24).

15. Hemostatic device, characterized in that it comprises a clip applier (100) and a tissue clip according to any one of claims 1 to 14, said clip applier (100) being adapted to release said tissue clip.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a tissue clamp and a hemostatic device.

Background

Endoscopic technology has revolutionized the success of minimally invasive surgery as a technique in more and more traditional surgical fields, which has become the mainstay of surgical development worldwide. In the current minimally invasive surgery, when the intracavitary operation is carried out, the intracavitary tissue or blood vessel inevitably generates a bleeding phenomenon, and necessary hemostasis treatment is carried out in time. Suture ligation is generally adopted in the prior art for hemostasis treatment, but the hemostasis method has the defects of long operation time, small operable space, larger incision assistance requirement and the like. Thus, the clip applier carries a tissue clip that has gained widespread use in current endoscopic procedures as a highly effective hemostatic closure device.

However, the existing tissue clip is easy to have the problems of insufficient fastening performance, infirm closing, rebound after closing and the like in the using process. Accordingly, there is a need to provide a tissue clip that addresses the above-mentioned problems.

Disclosure of Invention

It is an object of the present invention to provide a tissue clip having sufficient fastening properties, high stability after closure, and resistance to spring-back.

In order to achieve the purpose, the invention adopts the following technical scheme:

a tissue clip, comprising:

a tissue clip body comprising a tissue clip upper arm and a tissue clip lower arm, the tissue clip upper arm comprising a first connecting end and a first closing end, the tissue clip lower arm comprising a second connecting end and a second closing end, the first connecting end and the second connecting end being rotatably connected, the first closing end and the second closing end being configured to have an open state and a closed state;

a one-way rotation limiting mechanism disposed at a rotational connection of the tissue clamp upper arm and the tissue clamp lower arm to limit the first and second closing ends in the closed state.

Preferably, the one-way rotation limiting mechanism comprises a first inverted rack and an inverted tooth groove, one of the first inverted rack and the inverted tooth groove is arranged on the upper arm of the tissue clamp, the other is arranged on the lower arm of the tissue clamp, and the first inverted rack is meshed with the inverted tooth groove.

Preferably, the tissue clip further comprises:

the tilting prevention mechanism is used for preventing the first inverted rack from deviating from the tilting of the inverted tooth slot.

Preferably, the tilting prevention mechanism is a pressing strip, one end of the pressing strip is connected to the tissue clamp body, and the other end of the pressing strip presses against the free end of the first inverted rack.

Preferably, the first inverted rack is a bidirectional inverted rack, two opposite side surfaces of the first inverted rack are respectively provided with a first inverted tooth structure and a third inverted tooth structure, and the first inverted tooth structure is meshed with a second inverted tooth structure in the inverted tooth groove;

the tilting prevention mechanism is a second inverted rack, a fourth inverted tooth structure is arranged on the second inverted rack, and the fourth inverted tooth structure is meshed with the third inverted tooth structure.

Preferably, the tilting prevention mechanism is a ring belt, the ring belt is fixed on the tissue clamp body and sleeved on a connecting part of the first inverted rack and the inverted tooth groove, and the inner diameter of the ring belt is larger than the size of the connecting part.

Preferably, the one-way rotation limiting mechanism comprises a limiting groove and a limiting hook, the limiting hook comprises a connecting arm and an elastic arm, one end of the elastic arm is connected with the connecting arm at an acute angle, and the other end of the elastic arm is provided with a limiting flange which is turned outwards;

one of the limiting groove and the connecting arm is arranged on the upper arm of the tissue clamp, the other one of the limiting groove and the connecting arm is arranged on the lower arm of the tissue clamp, the elastic arm elastically presses against the inner wall surface of the limiting groove and can move along the limiting groove in the closing process of the tissue clamp body, and the limiting flanging is configured to elastically press against the limiting groove when the first closing end and the second closing end are in an opening state and is configured to stop against the end surface of the limiting groove when the first closing end and the second closing end are in a closing state.

Preferably, the one-way rotation limiting mechanism comprises a limiting hook and a limiting clamping groove, one of the limiting hook and the limiting clamping groove is arranged on the first clamping surface of the upper arm of the tissue clamp, the other one of the limiting hook and the limiting clamping groove is arranged on the second clamping surface of the lower arm of the tissue clamp, and the limiting hook and the limiting clamping groove are configured to be clamped when the first closed end and the second closed end are in a closed state.

Preferably, a reinforcement member is provided in both the tissue clamp upper arm and the tissue clamp lower arm.

Preferably, the reinforcing body is a wire-like structure made of titanium.

Preferably, one of the first closed end and the second closed end is provided with a lock hook, and the other is provided with a lock slot, and the lock hook can be clamped in the lock slot.

Preferably, the first closing end and the second closing end are both provided with a clamping mechanism, and the clamping mechanism is used for being matched and connected with a jaw of the clip applier.

Preferably, the end part of the clamping mechanism is convexly provided with a spring needle structure along the axial direction, and the spring needle structure is used for being clamped in a positioning groove in the jaw.

Preferably, a first clamping tooth structure is arranged on a first clamping surface of the upper arm of the tissue clamp, and the first clamping tooth structure comprises a first clamping tooth convex block and a first clamping tooth groove;

a second clamping tooth structure is arranged on a second clamping surface of the tissue clamp lower arm, and the second clamping tooth structure comprises a second clamping tooth convex block and a second clamping tooth groove;

the first closed end and the second closed end are configured to be in a closed state, the second tooth clamping convex block is clamped in the first tooth clamping groove, and the first tooth clamping convex block is clamped in the second tooth clamping groove.

It is another object of the present invention to provide a hemostatic device that is easy to use and provides a highly stable process for releasing tissue clips with a clip applier.

In order to achieve the purpose, the invention adopts the following technical scheme:

a hemostatic device comprising a clip applier and a tissue clip as described above, said clip applier for releasing said tissue clip.

The invention has the beneficial effects that:

the invention provides a tissue clamp, which comprises an upper tissue clamp arm and a lower tissue clamp arm, wherein a first connecting end of the upper tissue clamp arm and a second connecting end of the lower tissue clamp arm are rotatably connected, and a first closing end of the upper tissue clamp arm and a second closing end of the lower tissue clamp arm are configured to have an open state and a closed state. This tissue clamp sets up one-way rotation stop gear through the rotation junction that presss from both sides the upper arm at the tissue and press from both sides the lower arm to can improve the fastening nature of tissue clamp after closure to a great extent at closed state with first closed end and second closed end restriction, avoid closed not firm and closed back tissue clamp to kick-back the appearance of the phenomenon of opening.

Drawings

FIG. 1 is an isometric view of a tissue clip provided in accordance with an embodiment of the present invention;

FIG. 2 is a front view of a tissue clip according to one embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic structural view of a clip applier provided in the present invention;

FIG. 5 is a first state view of portion B of the clip applier provided by the present invention;

FIG. 6 is a second state diagram of portion B of the clip applier provided by the present invention;

FIG. 7 is a third state view of portion B of the clip applier provided by the present invention;

fig. 8 is a schematic view of an operating state of a unidirectional rotation limiting mechanism according to a second embodiment of the present invention;

FIG. 9 is a first schematic structural view of a tissue clip provided with a pressing strip according to a fourth embodiment of the present invention;

FIG. 10 is a second schematic structural view of a tissue clip provided with a pressing strip according to a fourth embodiment of the present invention;

FIG. 11 is a first schematic structural view of a tissue clamp according to a fourth embodiment of the present invention, wherein a second inverted rack is disposed on the tissue clamp;

fig. 12 is a second schematic structural view of a tissue clip provided with a second inverted rack according to a fourth embodiment of the present invention.

In the figure:

1. an upper arm of the tissue clamp; 11. a first clamping surface; 12. a lock hook; 13. a first jaw projection; 14. a first jaw groove;

2. a tissue clamp arm; 21. a second clamping surface; 22. a locking groove; 23. a second jaw projection; 24. a second jaw groove;

3. a unidirectional rotation limiting mechanism; 31. a first inverted rack; 32. chamfering the tooth grooves; 33. a limiting groove; 34. a limiting hook; 341. a connecting arm; 342. a resilient arm; 343. limiting and flanging;

4. a clamping mechanism;

5. a bullet needle structure; 51. an elastomer; 52. a spring block;

6. pressing the strips; 7. a second inverted rack;

10. tissue clips; 20. tissue to be hemostatic;

100. a clip applier; 101. and (6) positioning a groove.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

The present embodiment provides a tissue clamp 10, which can be used in a minimally invasive surgical procedure to perform a hemostatic operation on a tissue 20 to be hemostatic, and the tissue 20 to be hemostatic can be a blood vessel. In a particular use, tissue clip 10 is released using clip applier 100 and tissue clip 10 is clamped onto tissue 20 to be hemostized, thereby achieving hemostasis.

As shown in fig. 1 to 3, the tissue clip 10 includes a tissue clip body and a unidirectional rotation limiting mechanism 3, and the tissue clip body may be made of biomedical polymer material, such as ABS resin, polyetheretherketone, reinforced polytetrafluoroethylene, ultra-high molecular weight polyethylene UHMWPE, polypropylene, polyoxymethylene or nylon. Specifically, the tissue clamp body comprises a tissue clamp upper arm 1 and a tissue clamp lower arm 2, wherein the tissue clamp upper arm 1 comprises a first connecting end and a first closing end, and the tissue clamp lower arm 2 comprises a second connecting end and a second closing end. The first connecting end of the upper arm 1 of the tissue clamp is rotatably connected with the second connecting end of the lower arm 2 of the tissue clamp, and it should be noted that the rotary connection can be realized by arranging rotating shaft holes on the first connecting end and the second connecting end and then penetrating the two rotating shaft holes by using a rotating shaft; or the first connecting end and the second connecting end can be integrally formed, and the relative rotation is realized by the elasticity of the material.

The first closed end of the upper arm 1 and the second closed end of the lower arm 2 have an open state and a closed state. In order to close the first closed end and the second closed end, a lock clasp 12 is arranged at the first closed end of the upper arm 1 of the tissue clamp, a lock groove 22 is arranged at the second closed end of the lower arm 2 of the tissue clamp, the lock groove 22 can be a groove-shaped structure directly arranged on the second closed end, or two lock plates are arranged on the second closed end in a protruding mode, and the lock groove 22 is formed by utilizing the space between the two lock plates. When the tissue presss from both sides upper arm 1 and tissue and presss from both sides lower arm 2 and be close to a certain extent after the exogenic action that clip applier 100 exerted gradually, hasp hook 12 can the joint in hasp groove 22 to realize the closure of first closed end and second closed end, and then with the blood vessel centre gripping between tissue presss from both sides upper arm 1 and tissue and presss from both sides lower arm 2.

Of course, in other embodiments, the positions of the latching hook 12 and latching slot 22 may be reversed, i.e., the latching hook 12 is disposed on the second closed end and the latching slot 22 is disposed on the first closed end. In addition to the combination of latch hook 12 and latch slot 22, it is also possible to use two latch hooks to be hooked together or other structures to close the first and second closing ends, which will not be described herein.

The one-way rotation limiting mechanism 3 is arranged at the rotation connection position of the upper tissue clamp arm 1 and the lower tissue clamp arm 2 so as to limit the first closing end and the second closing end in a closing state after the tissue clamp body is closed. Specifically, as shown in fig. 1, in the present embodiment, the one-way rotation limiting mechanism 3 includes a first rack bar 31 and a rack bar groove 32. Wherein, the protruding first junction department of pressing from both sides upper arm 1 at the tissue of establishing of first rack of falling 31, pawl groove 32 is seted up at the second junction department that the tissue pressed from both sides lower arm 2, and first rack of falling 31 and pawl groove 32 all are located the tissue and press from both sides the body on the outer wall surface that sets up with the clamping face relatively, and first rack of falling 31 epirelief is equipped with first pawl structure, and the protruding second pawl structure that is equipped with in pawl groove 32, first pawl structure and the meshing of second pawl structure.

Because the inverted teeth on the first inverted tooth structure and the second inverted tooth structure respectively comprise two inclined planes with the same inclination direction but different inclination angles, the first inverted tooth rack 31 can move relative to the inverted tooth slot 32 along one of the inclined planes in the closing process of the tissue clamp body, so that the gradual approaching and closing of the upper arm 1 and the lower arm 2 of the tissue clamp cannot be influenced; after the first and second closing ends are closed, if the spring-back tendency occurs due to too much elasticity of the material itself or insufficient locking force of the locking hook 12 and the locking groove 22, the first inverted tooth structure on the first inverted rack 31 can be stopped against the second inverted tooth structure in the inverted tooth groove 32 due to the existence of another slope, so as to stop the spring-back tendency, and the first and second closing ends are maintained in the closed state.

Of course, in other embodiments, the positions of the first inverted tooth rack 31 and the inverted tooth groove 32 can be interchanged, that is, the first inverted tooth rack 31 is disposed on the lower tissue clamp arm 2, and the inverted tooth groove 32 is disposed on the upper tissue clamp arm 1, as long as the inclination directions of the inverted teeth on the first inverted tooth structure and the second inverted tooth structure are changed. Further, in order to improve the compactness of the whole tissue clamp 10, a containing groove can be arranged at the joint of the upper arm 1 and the lower arm 2 of the tissue clamp, the containing groove is communicated with the inverted tooth groove 32, and the first inverted rack 31 is arranged in the containing groove and the inverted tooth groove 32, so that the outer wall surface of the first inverted rack 31 is coplanar with the outer wall surface of the tissue clamp body.

To further avoid the tissue clamp 10 from springing back after closing, reinforcements (not shown) are provided in both the upper and lower clamp arms 1, 2. Alternatively, the reinforcement is a wire-like structure made of a metallic material, preferably titanium, so that the tissue clamp body is not easily resilient after closing, and memory alloys that are not easily resilient, other than titanium, are also suitable as materials for making the reinforcement. The reinforcement may be cylindrical or flat. The reinforcement can be placed inside the upper and lower tissue clamp arms 1 and 2 or embedded in the surface. In this embodiment, an accommodating groove is provided on the first clamping surface 11 of the upper arm 1 of the tissue clamp, and an accommodating groove is also provided on the second clamping surface 21 of the lower arm 2 of the tissue clamp, in which accommodating groove the reinforcement body is placed.

Optionally, in order to improve the clamping force of the tissue to be hemostatic 20 after the upper and lower tissue clamp arms 1 and 2 are closed and avoid the tissue clamp 10 from pressing the tissue to be hemostatic 20 outward when the tissue clamp is closed, as shown in fig. 1, a clamping tooth structure is provided on the first clamping surface 11 of the upper tissue clamp arm 1 and the second clamping surface 21 of the lower tissue clamp arm 2, and the clamping tooth structure can increase the slipping force between the tissue to be hemostatic 20 and the tissue clamp 10. Optionally, the clamping tooth structure comprises a first clamping tooth structure and a second clamping tooth structure, the first clamping tooth structure comprises a first clamping tooth projection 13 and a first clamping tooth groove 14 which are arranged side by side along the length direction of the upper arm 1 of the tissue clamp, the second clamping tooth structure comprises a second clamping tooth projection 23 and a second clamping tooth groove 24 which are arranged side by side along the length direction of the lower arm 2 of the tissue clamp, the shapes of the second clamping tooth projection 23 and the first clamping tooth groove 14 are matched, and the shapes of the first clamping tooth projection 13 and the second clamping tooth groove 24 are matched. In order to avoid cutting damage to the tissue 20 to be stopped, the first clipping tooth projection 13 and the second clipping tooth projection 23 are both of a hemispherical or semi-cylindrical structure with smooth outer wall surfaces.

When the first closed end and the second closed end are in a closed state, the second tooth clamping convex block 23 is clamped in the first tooth clamping groove 14, and the first tooth clamping convex block 13 is clamped in the second tooth clamping groove 24. Further, the first tooth clamping structure comprises a plurality of groups of first tooth clamping convex blocks 13 and first tooth clamping grooves 14 which are arranged side by side, and the second tooth clamping structure comprises a plurality of groups of second tooth clamping convex blocks 23 and second tooth clamping grooves 24 which are arranged side by side, so that the slippage force between the tissue 20 to be hemostatic and the tissue clamp 10 is further improved.

Further, as shown in fig. 1-3, a clamping mechanism 4 is disposed on each of the first and second closing ends, the clamping mechanism 4 being cooperatively mountable with the jaws of clip applier 100 to limit the position of tissue clip 10 within the jaws. Alternatively, the clamping mechanism 4 may be a columnar structure or two spaced apart drop-shaped plate-like structures. When tissue clip 10 is placed within the jaws of clip applier 100, the ends of clamping mechanism 4 are respectively abutted against the two opposing sidewalls of the jaws and can be moved toward the ends of the jaws when clip applier 100 applies force to tissue clip 10 for final release of tissue clip 10.

Further, in order to improve the positioning accuracy of the tissue clip 10 in the jaw, the elastic needle structure 5 is provided at the end of the clamping mechanism 4 in a protruding manner in the axial direction thereof, and the elastic needle structure 5 can be extended and contracted in the axial direction of the clamping mechanism 4. Specifically, as shown in fig. 3, the pogo pin structure 5 includes a spring block 52 and an elastic body 51, one end of the elastic body 51 is connected to the end of the clamping mechanism 4, and the other end is connected to the spring block 52, alternatively, the elastic body 51 is a spring, the spring block 52 is a cylindrical structure made of a metal material, and a positioning groove 101 on the clip applier 100 used in cooperation with the pogo pin structure 5 is a U-shaped groove. In order to improve the structural compactness of the clamping mechanism 4 and the elastic needle structure 5, a mounting hole can be arranged in the axial direction of the clamping mechanism 4, a containing hole is arranged in the elastic block 52, a flange is arranged at one end, close to the elastic body 51, of the elastic block 52, the flange is arranged in the mounting hole and abutted against the inner end face of the mounting hole, one end of the elastic body 51 is arranged in the mounting hole, and the other end of the elastic body is arranged in the containing hole.

As shown in fig. 4-7, when the tissue clip 10 is in the temporary storage position within the jaws of the clip applier 100, the elastic body 51 is compressed, and the elastic block 52 contracts inside the jaws and abuts against the inner wall surfaces of the jaws; when the tissue clip 10 is pushed from the temporary storage position to the working position in the clip applier 100, the tissue clip 10 moves from the inner side of the jaws to the outer side, and when the latch structure 5 moves to the positioning groove 101 arranged on the jaws, the elastic block 52 can extend out under the action of the elastic body 51 and is arranged in the positioning groove 101 of the clip applier 100, so that the positioning accuracy of the tissue clip 10 in the jaws when the tissue clip 10 is released is improved.

The present embodiment also provides a hemostatic device that includes clip applier 100 and tissue clip 10 as described above, as shown in fig. 4-7, where clip applier 100 is configured to release tissue clip 10 as described above. The jaws of clip applier 100 are provided with detents 101, and detents 101 are used to cooperate with latch structures 5 on tissue clip 10.

As shown in fig. 4-7, the process of clip applier 100 to release tissue clip 10 is as follows:

first, the tissue clip 10 is placed deep in the jaws; then, the tissue clamp 10 is pushed to the jaw by using the pushing and clamping piece of the clip applier 100, and at the moment, the elastic needle structure 5 is clamped into the positioning groove 101 at the jaw; finally, the outer sleeve of the clip applier 100 moves to close the tissue clip 10, thereby achieving the closure of the tissue 20 to be stopped, and after the tissue clip 10 is closed, the outer sleeve moves in the opposite direction to release the closed tissue clip 10. Clip applier 100 is easy to use and provides high precision in positioning tissue clip 10.

Example two

On the basis of the first embodiment, the present embodiment provides a tissue clip 10, where the tissue clip 10 includes a tissue clip body and a unidirectional rotation limiting mechanism 3, and the tissue clip body has the same structure as the tissue clip body in the first embodiment, and details are not repeated here. The present embodiment is different from the first embodiment only in the structure of the unidirectional rotation limiting mechanism 3.

In the present embodiment, as shown in fig. 8, the one-way rotation limiting mechanism 3 includes a limiting groove 33 and a limiting hook 34. The limiting hook 34 comprises a connecting arm 341 and an elastic arm 342, one end of the elastic arm 342 is connected with the connecting arm 341 in an acute angle, and the other end is provided with a limiting flange 343 which is turned outwards. When the number of the elastic arms 342 is plural, the plural elastic arms 342 are provided radially on the connection arm 341 so that the entire stopper hook 34 is "umbrella-shaped". The limiting groove 33 may be a rectangular groove or a trapezoidal groove, preferably a trapezoidal groove. In the present embodiment, the limiting hook 34 is disposed on the upper tissue clamp arm 1, one end of the connecting arm 341 of the limiting hook 34 is fixedly connected with the upper tissue clamp arm 1, and the limiting groove 33 is disposed on the lower tissue clamp arm 2.

When the first closed end of the upper arm 1 and the second closed end of the lower arm 2 are in the open state, the elastic arm 342 and the limiting flange 343 of the limiting hook 34 are both located in the limiting groove 33 and are in the contracted state relative to the connecting arm 341, and the elastic arm 342 and the limiting flange 343 are both elastically pressed against the inner wall surface of the limiting groove 33. During the closing process of the tissue clamp 10, the limiting hook 34 moves outwards along the limiting groove 33 and expands gradually, the elastic arm 342 is always at least partially positioned in the limiting groove 33, and the limiting flange 343 moves outwards gradually from the inside of the limiting groove 33. When the tissue clamp 10 is closed, the limiting flange 343 moves to the outside of the limiting groove 33 and abuts against the end surface of the limiting groove 33.

Because the elastic arm 342 can be retracted relative to the connecting arm 341, the engagement between the limiting groove 33 and the limiting hook 34 does not affect the gradual approach and closing of the upper and lower tissue clip arms 1 and 2 of the tissue clip 10. After the first closing end and the second closing end are closed, if the tissue clamp body has a rebound tendency due to too large elasticity of the material of the tissue clamp body or insufficient locking force of the locking hook 12 and the locking groove 22, the limiting flange 343 abuts against the end surface of the limiting groove 33 at the moment, and the limiting hook 34 is in an expanded state and cannot enable the limiting flange 343 to enter the limiting groove 33 again, so that the rebound tendency of the tissue clamp body can be prevented, and the tissue clamp body is maintained in a closed state.

The present embodiment also provides a hemostatic device that includes clip applier 100 and tissue clip 10 described above. The hemostatic device provided in this embodiment has the same structure as the hemostatic device in the first embodiment, and is not described herein again.

EXAMPLE III

On the basis of the first and second embodiments, the present embodiment provides a tissue clip 10, where the tissue clip 10 includes a tissue clip body and a unidirectional rotation limiting mechanism 3, and the tissue clip body has the same structure as the tissue clip body in the first and second embodiments, and will not be described herein again. The present embodiment is different from the first and second embodiments only in the structure of the unidirectional rotation stopper mechanism 3.

In this embodiment, one-way rotation stop gear 3 includes spacing trip and spacing draw-in groove, and spacing draw-in groove sets up on the first clamping face 11 of organizing pressing from both sides upper arm 1, and preferred setting is at the middle part of first clamping face 11, and spacing trip sets up on organizing pressing from both sides the second clamping face 21 of underarm 2, and preferred setting is at the middle part of second clamping face 21, and when first closed end and second closed end were in the closure state, spacing trip can the joint in spacing draw-in groove.

After the first closed end and the second closed end are closed, if the tissue clamp body has a rebound tendency due to too large elasticity of the material or insufficient locking force of the locking hook 12 and the locking slot 22, the tissue clamp body can be prevented from rebounding due to the clamping connection of the limiting hook and the limiting clamping slot, so that the tissue clamp body is maintained in a closed state. It should be noted that the two-point clamping of the tissue clamp 10 can be realized by the dual cooperation of the limiting hook and the limiting slot, and the locking hook 12 and the locking slot 22, so that the fastening performance of the closed tissue clamp 10 is greatly improved.

Of course, in other embodiments, the positions of the limiting hook and the limiting slot may be interchanged, that is, the limiting hook is disposed in the middle of the first clamping surface 11 of the upper arm 1 of the tissue clamp, and the limiting slot is disposed in the middle of the second clamping surface 21 of the lower arm 2 of the tissue clamp.

The present embodiment also provides a hemostatic device that includes clip applier 100 and tissue clip 10 described above. The hemostatic device provided in this embodiment has the same structure as the hemostatic devices in the first and second embodiments, and is not described herein again.

Example four

On the basis of the first embodiment, the present embodiment provides a tissue clip 10, where the tissue clip 10 includes a tissue clip body and a unidirectional rotation limiting mechanism 3, and the structure of the unidirectional rotation limiting mechanism 3 is the same as that of the unidirectional rotation limiting mechanism 3 in the first embodiment, and is not described herein again. The difference between the first embodiment and the second embodiment lies in that the structure of the tissue clip body is different from that of the first embodiment, and the tissue clip body of the first embodiment is further provided with an anti-tilting mechanism, and the anti-tilting mechanism is used for limiting the first inverted rack 31 so as to limit the first inverted rack 31 in the inverted tooth groove 32 and prevent the first inverted rack 31 from tilting in a square direction away from the inverted tooth groove 32.

Alternatively, as shown in fig. 9 and 10, the anti-tilting mechanism may be a pressing strip 6, the pressing strip 6 is a strip structure made of an elastic material, and may be made of rubber, for example, and one end of the pressing strip 6 is connected to the tissue clamp lower arm 2, and the other end of the pressing strip presses against the free end of the first inverted rack 31. When the tissue clip body is gradually closed under the action of external force, and the first pawl structure on the first pawl 31 moves in the pawl groove 32, the abutting strip 6 can provide abutting force for the first pawl 31, and the abutting force can avoid the tilting of the first pawl 31. It should be noted that the magnitude of the resisting force cannot affect the movement of the first inverted rack 31 in the inverted tooth groove 32.

Of course, in addition to the pressing bar 6, the tilting prevention mechanism may also adopt a second inverted rack 7 as shown in fig. 11 and 12, one end of the second inverted rack 7 is connected to the tissue clamp lower arm 2, and the other end is provided with a fourth inverted tooth structure. At this time, the first inverted rack 31 is a bidirectional inverted rack, a third inverted tooth structure is arranged on a side surface of the first inverted rack 31 opposite to the side surface on which the first inverted tooth structure is arranged, and the third inverted tooth structure is meshed with the fourth inverted tooth structure. When the tissue clip body is gradually closed under the action of external force, and when the first pawl structure on the first pawl 31 moves in the pawl groove 32, the third pawl structure can move along the fourth pawl structure, and because the first pawl 31 is limited between the second pawl 7 and the pawl groove 32, the purpose of preventing the first pawl 31 from tilting can be achieved. In addition, the double-pawl structure can further improve the fastening performance of the tissue clamp 10 after being closed, so as to further avoid the phenomena of infirm closing and rebound opening of the tissue clamp 10 after being closed.

Alternatively, the tooth tips of the first rack bar 31, the pawl groove 32 and the pawl structure on the second rack bar 7 may be regular shapes (such as triangle, circular arc, etc.), or irregular shapes, and are not limited in detail. Preferably, the tooth tips of the inverted tooth structures on the first inverted tooth rack 31, the inverted tooth groove 32 and the second inverted tooth rack 7 can be arranged at an obtuse angle with the moving direction thereof as shown in fig. 12, so as to reduce the resistance force when the tissue clamp body is normally closed, make the tissue clamp body easier to close and difficult to reverse, and further improve the tightness of the closed tissue clamp body.

Further, the pressing bar 6 as the anti-cocking mechanism may be integrally formed with the tissue clamp lower arm 2. The pressing strip 6 may be disposed to protrude from the lower tissue clamp arm 2 as shown in fig. 9, or may be a non-protruding structure as shown in fig. 10, that is, the outer wall surface of the pressing strip 6 is disposed to be coplanar with the lower tissue clamp arm 2, so as to improve the compactness of the whole tissue clamp 10 and avoid damage to other tissues in the patient body when the tissue clamp 10 is placed. The second inverted rack 7 as the tilting prevention mechanism may be integrally formed with the tissue clamp lower arm 2, and may be protruded out of the tissue clamp lower arm 2 as shown in fig. 11, or may be a non-protruded structure as shown in fig. 12, that is, the outer wall surface of the second inverted rack 7 is coplanar with the tissue clamp lower arm 2, so as to improve the structural compactness of the whole tissue clamp 10 and avoid damaging other tissues in the patient body when placing the tissue clamp 10. Of course, in addition to the integral molding, the pressing bar 6 or the second inverted rack 7 may be separately disposed from the lower tissue clamp arm 2 and then connected by bonding or connecting members to form an integral structure.

Of course, besides the pressing bar 6 and the second inverted rack 7, the anti-tilting mechanism can also be a ring belt which is fixed on the tissue clamp body and sleeved on the connecting part of the first inverted rack 31 and the inverted tooth groove 32. Alternatively, the loop tape is a plastic loop made of plastic, and the inner diameter of the plastic loop is slightly larger than the size of the connecting portion of the first inverted rack 31 and the inverted tooth groove 32, so as to limit the first inverted rack 31 in the plastic loop without affecting the movement of the first inverted rack 31.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.