CN215384344U

CN215384344U - Hemostatic clamp

Info

Publication number: CN215384344U
Application number: CN202120421992.0U
Authority: CN
Inventors: 张超
Original assignee: Jiangsu Ate Medical Technology Co ltd
Current assignee: Jiangsu Ate Medical Technology Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2022-01-04
Anticipated expiration: 2031-02-25

Abstract

The application provides a hemostatic clamp which comprises a first sleeve, a second sleeve, a clamping piece group and a pull rod; the clamping piece group comprises a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece are respectively provided with a first end and a second end which are arranged oppositely; the first ends of the first clamping piece and the second clamping piece are connected with the pull rod, and the second ends can be switched among an opening state, a pre-closing state and a closing state to realize hemostasis operation; when the clamping piece group is in a pre-closing state or a closing state, the first self-locking part and the second self-locking part are mutually clamped and matched to enable the clamping piece group to realize self-locking.

Description

Hemostatic clamp

Technical Field

The utility model relates to the field of medical instruments, in particular to a hemostatic clamp.

Background

The hemostatic clamp is commonly seen in an endoscope, and is a hemostatic method for directly clamping and closing a hemorrhagic blood vessel and a focus visible to the naked eye by conveying the hemostatic clamp into a body through an endoscope channel, the aim of hemostasis is achieved by clamping the blood vessel and surrounding tissues, the hemostatic principle is similar to surgical blood vessel suture or ligation, the hemostatic clamp belongs to a mechanical method, the coagulation, denaturation and necrosis of mucous membrane tissues are not caused, and after the hemostatic treatment of a metal clamp, a local tissue forms granuloma through an inflammation process, automatically falls off and is discharged out of the body through a digestive tract.

A typical hemostatic clamp includes a clamping member set, a first sleeve, a pull rod, a fitting, and a second sleeve. The first sleeve and the second sleeve are connected through the assembly part, the clamping piece group clamps the wound and is fixedly remained at the wound through the first sleeve, then the pull rod is driven to move, so that the first sleeve is separated from the assembly part, the clamping piece group and the first sleeve are remained in the body, the wound is waited to be healed, and the clamping piece group and the first sleeve can be discharged out of the body from the digestive system. However, the first clamping member and the second clamping member in the related art cannot achieve self-locking.

SUMMERY OF THE UTILITY MODEL

The application provides a hemostatic clamp, and self-locking function can be realized to first holder and second holder.

An embodiment of the present application provides a hemostatic clamp, including:

a first sleeve;

a second sleeve to which the first sleeve is detachably connected;

the pull rod is arranged along the axial direction of the first sleeve and the second sleeve and can move along the axial direction of the first sleeve and the second sleeve; and

the clamping piece group comprises a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are respectively provided with a first end and a second end which are arranged oppositely, the first end of the first clamping piece and the first end of the second clamping piece are connected with the pull rod, and the pull rod can pull the second end of the first clamping piece and the second end of the second clamping piece to be switched among an opening state, a pre-closing state and a closing state; first holder orientation one side of second holder has first self-locking portion, second holder orientation one side of first holder has second self-locking portion, works as the second end of first holder with the second end of second holder is in the closed state in advance perhaps during the closed state, first self-locking portion with the cooperation of second self-locking portion joint each other makes the self-locking is realized to holder group.

In one embodiment, the first self-locking portion and the second self-locking portion are respectively located on two sides of a symmetry axis of the first clamping member and the second clamping member.

In one embodiment, the first self-locking part and the second self-locking part are arranged in axial symmetry relative to the symmetry axis of the first clamping piece and the second clamping piece.

In one embodiment, when the first self-locking part and the second self-locking part are in snap fit, the surfaces in contact are both adaptive inclined surfaces or smooth curved surfaces.

In one embodiment, when the clamping member group is in the pre-closing state or the closing state, one side surfaces of the first self-locking portion and the second self-locking portion facing each other do not abut.

In one embodiment, the first self-locking part protrusion is arranged on the outer wall of the first clamping piece; the second self-locking part is arranged on the outer wall of the second clamping piece in a protruding mode.

In one embodiment, a first end of the first clamping piece is provided with a first sliding groove, a first end of the second clamping piece is provided with a second sliding groove, and the extending direction of the first sliding groove is intersected with the extending direction of the second sliding groove;

one end of the pull rod, which is close to the clamping piece group, is a butt joint end, two side surfaces, which are back to each other, of the butt joint end are staggered to form two eccentric columns, and the two eccentric columns are correspondingly and slidably arranged in the first sliding groove and the second sliding groove respectively so as to pull the second end of the first clamping piece and the second end of the second clamping piece to be switched among the opening state, the pre-closing state and the closing state.

In one embodiment, the first sliding groove and the second sliding groove are respectively located on two sides of a symmetry axis of the first clamping member and the second clamping member.

In one embodiment, the first sliding groove and the second sliding groove are arranged in axial symmetry with respect to a symmetry axis of the first clamping member and the second clamping member.

In one embodiment, the two eccentric columns are respectively located on two sides of a central axis of the pull rod, and a projection of one of the eccentric columns on the pull rod is not coaxial with a projection of the other eccentric column on the pull rod.

In one embodiment, the tie rod includes a head portion and a rod portion connected to the head portion, the head portion being closer to the clamp group than the rod portion, the eccentric post being formed on the head portion; a tearing part is formed at the transition connection position of the head part and the rod part;

when the pull rod pulls the first clamping piece and the second clamping piece to move to the closed state, the head part and the rod part are broken at the tearing part, so that the head part and the rod part are separated.

In one embodiment, the tearing portion is at least one notch formed by recessing the surface of the transition joint towards the central axis of the pull rod.

In one embodiment, the first end of the first clamping member and the first end of the second clamping member are respectively rotatably connected with the first sleeve, and the first ends are intersected with the axial direction of the pull rod or are in a non-coplanar straight line relative to the rotation axis of the first sleeve.

In one embodiment, the first end of the first clamping piece and the first end of the second clamping piece are both provided with a connecting column facing the first sleeve, the first sleeve is provided with a connecting hole matched with the connecting column, and the first clamping piece and the second clamping piece are both connected with the first sleeve in a rotating mode through matching of the connecting column and the connecting hole.

In one embodiment, the hemostatic clip further comprises a fitting, the first sleeve and the second sleeve being detachably connected by the fitting; the fitting is disconnected from the first sleeve when the set of grippers is switched to the closed state.

In one embodiment, a blind hole is formed on the outer side wall of the first sleeve, and a connecting part is formed between the corresponding side wall of the first sleeve and the assembly at the blind hole; when the clamping piece group is in the open state or the pre-closed state, the first sleeve and the assembly are relatively fixed through the connecting part, when the clamping piece group is switched to the closed state, the pull rod abuts against the assembly and pushes the assembly to move so that the assembly is plastically deformed, and the first sleeve is separated from the assembly.

In one embodiment, the fitting is formed with a step portion near an outer surface of the second sleeve, and a groove portion engaged with the step portion is formed at a corresponding position on an inner wall of the second sleeve.

In one embodiment, a convex portion is formed on the outer surface of the fitting near one end of the retainer group, a concave portion corresponding to the convex portion is formed on the inner wall of the first sleeve, and when the retainer group is in the open state or switched to the pre-closed state, the first sleeve and the fitting are connected with the concave portion through the convex portion; when the clamping piece group is switched to a closed state, the convex part and the concave part are disengaged.

The utility model has the beneficial effects that:

Drawings

FIG. 1 is an exploded view of a hemostatic clip according to one embodiment of the present application in an open position;

FIG. 2 is a perspective view of a hemostatic clip provided in accordance with one embodiment of the present application in an open position;

FIG. 3 is an overall assembly view of a hemostatic clip provided in accordance with one embodiment of the present application in a pre-closed state;

FIGS. 4-5 are cross-sectional views of a hemostatic clip provided in accordance with one embodiment of the present application at various angles;

fig. 6 is a schematic structural diagram of a pull rod according to an embodiment of the present application.

Description of reference numerals:

1-hemostatic clamp;

11-a first sleeve; 111-connection hole; 112-a connecting portion; 113-a recess; 114-a blind hole;

12-a second sleeve;

13-a pull rod; 131-a butt end; 132-eccentric columns; 133-a head; 134-a shaft portion; 135-tear-off portion;

14-a group of grippers;

141-a first clamp; 1411-first self-lock; 1412-a first sliding groove;

142-a second clamp; 1421 — second sliding groove;

143-connecting column;

15-a fitting; 151-step portion; 152-a boss;

s 1-first end; s 2-second end.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

The embodiment provides a hemostatic clamp, the clamping member set of which not only can rotate freely to reach the wound site, but also can separate the first sleeve from the second sleeve, thereby releasing the tail of the hemostatic clamp too long. The hemostatic clamp is mainly used for rotating and separating the clamping piece group and the second sleeve under certain requirements, for example, in human body micro medical operation, the clamping piece group finds a wound and clamps and stanchs under the rotation and movement, and the first sleeve is separated from the clamping piece group to be left in a body to realize separation.

As shown in fig. 1 to 5, in the present embodiment, there is provided a hemostatic clip 1 including: a first sleeve 11, a second sleeve 12, a tie rod 13 and a set of clamps 14. Wherein, the first sleeve 11 and the second sleeve 12 are detachably connected, so that the holding member group 14 is connected between the first sleeve 11 and the second sleeve 12 before the wound is clamped, and the first sleeve 11 and the second sleeve 12 can be separated after the wound is clamped by the holding member group 14, at this time, the first sleeve 11 and the holding member group 14 hold the wound and stay in the body, and wait for the wound to heal, and the holding member group 14 and the first sleeve 11 are discharged from the digestive system.

In addition, the pull rod 13 is arranged along the axial direction of the first sleeve 11 and the second sleeve 12, the first sleeve 11 is overlapped with the axial direction of the second sleeve 12, the pull rod 13 can move along the axial direction of the first sleeve 11 and the second sleeve 12, namely, the extending direction of the pull rod 13 is overlapped with or parallel to the axial direction of the first sleeve 11 or the second sleeve 12, and the clamping group 14 is gradually closed and clamped between the clamping group 14 while moving into the first sleeve 11 under the constraint of the first sleeve 11, so that the clamping and the hemostasis of the wound are realized.

In this embodiment, the clamping member set 14 includes a first clamping member 141 and a second clamping member 142, each of the first clamping member 141 and the second clamping member 142 has a first end s1 and a second end s2 which are oppositely disposed, the first end of the first clamping member and the first end s1 of the second clamping member s1 are connected to the pull rod 13, and the pull rod 13 can pull the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142, so that the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 are switched between an open state (the state shown in fig. 1 and 2), a pre-closed state (the state shown in fig. 3, 4 and 5) and a closed state, thereby achieving a hemostasis operation.

For example, in the initial state, the second ends s2 of the first clamping member 141 and the second clamping member 142 are in the open state, and the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 are both in transmission connection with the pull rod 13. When clamping is performed, the second end s2 of the first clamping piece 141 and the second end s2 of the second clamping piece 142 are placed at the wound, the first clamping piece 141 and the second clamping piece 142 are driven through the movement of the pull rod 13, the second end s2 of the first clamping piece 141 and the second end s2 of the second clamping piece 142 move oppositely and are closed together, and at the moment, the first clamping piece 141 and the second clamping piece 142 are in a pre-closing state, so that the tissue at the wound is clamped, and the wound is stopped. After the first clamping member 141 and the second clamping member 142 complete clamping and hemostasis on the wound, the pull rod 13 continues to move to the right side in the paper direction as shown in fig. 2, at this time, the first sleeve 11 is separated from the second sleeve 12, and the pull rod 13 is partially separated from the first sleeve 11 and drives the second sleeve 12 to be separated from the first sleeve 11, only part of the pull rod 13, the first sleeve 11, the first clamping member 141 and the second clamping member 142 stay in the body, and after the wound is healed, the part of the structure is discharged out of the body along with the digestive system.

In this embodiment, the first sleeve 11 provides support for the set of grippers 14. Specifically, the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 are both drivingly connected to the pull rod 13, and the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 are both located outside the first sleeve 11 for clamping the wound. When the wound is clamped, the first end s1 of the first clamping piece 141 and the first end s1 of the second clamping piece 142 in the first sleeve 11 are pulled by the pull rod 13, and the second end s2 of the first clamping piece 141 and the second end s2 of the second clamping piece 142 outside the first sleeve 11 move towards each other and close to be in a pre-closing state under the driving of the first end s1 of the first clamping piece 141 and the first end s1 of the second clamping piece 142, so that the clamping and hemostasis action is completed.

It should be noted that, when the first clamping member 141 and the second clamping member 142 are closed between the second ends s2 and s2 in the pre-closed state, the second ends s2 and s2 of the first and

second clamping members

141 and 142 are closed to clamp the wound, and the first and

second cannulas

11 and 12 are connected; when deployed between second end s2 of first clip 141 and second end s2 of second clip 142 in an open state, as shown in fig. 1 and 2, second ends s2 of first clip 141 and second clip 142 do not yet pinch the wound; when the closure between the second ends s2, s2 of the first and

second clamps

141, 142 is in the closed state, the second ends s2, s2 of the first and

second clamps

141, 142 have been closed to clamp the wound, and the first and

second cannulas

11, 12 are separated.

In order to realize self-locking of the first clamping member 141 and the second clamping member 142, so that the first clamping member 141 and the second clamping member 142 do not move relatively after being matched with each other to clamp the wound, thereby ensuring the stability of clamping the wound, in this embodiment, the sides of the first clamping member 141 and the second clamping member 142 facing each other are respectively formed with a first self-locking portion 1411 and a second self-locking portion (not shown in the drawings, and refer to the structural shape of the first self-locking portion 1411), that is, the first self-locking portion 1411 and the second self-locking portion are arranged oppositely, when the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 are in a pre-closed state or a closed state, that is, the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 are already in a state of clamping or clamping the wound, the first self-locking portion 1411 and the second self-locking portion are matched with each other in a snap fit, at this time, the first clamping member 141 and the second clamping member 142 are fixed relatively, namely, the clamping member set 14 is self-locked, and the relative position between the first clamping member 141 and the second clamping member 142 is not changed after the clamping member set 14 clamps the wound, so that the reliability of clamping the wound by the clamping member set 14 is ensured, and the clamping member set 14 is prevented from loosening.

In addition, as shown in fig. 1, 2, 3 and 4, the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 are connected to the pull rod 13, and the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 can be switched between the open state, the pre-closed state and the closed state under the driving of the pull rod 13, that is, the first clamping member 141 and the second clamping member 142 are similar to a clip or the like, so that it can be understood that if the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 are pulled or driven to enable the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 to be self-locked after being closed, the first clamping member 141 and the second clamping member 142 should be respectively located at two sides of the central axis of the pull rod 13, and in order to synchronize the opening or closing of the first clamping member 141 and the second clamping member 142, the first clamping member 141 and the second clamping member 142 may be symmetrically disposed.

As described above, since the first clamping member 141 and the second clamping member 142 are symmetrically disposed, the first self-locking portion 1411 on the first clamping member 141 and the second self-locking portion on the second clamping member 142 are respectively located at two sides of the symmetry axis of the first clamping member 141 and the second clamping member 142. In this embodiment, the first self-locking portion 1411 and the second self-locking portion may be further disposed to be axisymmetrically disposed with respect to a symmetry axis of the first clamping member 141 and the second clamping member 142, so that the first clamping member 141 and the second clamping member 142 synchronously move toward each other to a pre-closing state, and at this time, the first self-locking portion 1411 and the second self-locking portion may be just clamped to each other to achieve self-locking, that is, after the first clamping member 141 and the second clamping member 142 clamp a wound, the first clamping member 141 and the second clamping member 142 just complete self-locking, so as to ensure that the first clamping member 141 and the second clamping member 142 are relatively fixed to prevent loosening and achieve accuracy of wound clamping position.

In addition, when the first clamping member 141 and the second clamping member 142 move relatively to the pre-closing state, the self-locking of the clamping member group 14 is realized by the relative clamping between the first self-locking portion 1411 and the second self-locking portion, so in order to ensure the reliable clamping between the first self-locking portion 1411 and the second self-locking portion, in this embodiment, the surfaces that contact when the first self-locking portion 1411 and the second self-locking portion are clamped and matched may be both an adaptive inclined surface or a smooth curved surface, so that the inclined surface or the smooth curved surface plays a role in guiding, and the smooth clamping between the first self-locking portion 1411 and the second self-locking portion is facilitated. The slope of the inclined plane and the curvature of the smooth curved surface are not limited in this embodiment, as long as the first self-locking portion 1411 and the second self-locking portion can be smoothly clamped. In addition, the surface of the first self-locking portion 1411, which is in contact with the second self-locking portion, is set to be an inclined surface or a smooth curved surface, which is also beneficial to the mutual clamping between the first self-locking portion 1411 and the second self-locking portion, that is, a movement space or an avoidance space is provided when the first self-locking portion 1411 and the second self-locking portion are mutually clamped.

As can be seen from the above, the first self-locking portion 1411 is disposed on the first clamping member 141, the second self-locking portion is disposed on the second clamping member 142, and when the first clamping member 141 and the second clamping member 142 are in the pre-closing state or the closing state, the first self-locking portion 1411 and the second self-locking portion are clamped to achieve self-locking, so that opposite side surfaces of the first self-locking portion 1411 and the second self-locking portion are not abutted to each other. Because the first self-locking portion 1411 and the second self-locking portion are arranged oppositely, if the first clamping piece 141 and the second clamping piece 142 are in a closed state or a pre-closed state, opposite side surfaces of the first self-locking portion 1411 and the second self-locking portion are abutted, at this time, the first self-locking portion 1411 and the second self-locking portion are abutted or abutted, so that clamping cannot be achieved, and the clamping set 4 cannot achieve self-locking. Therefore, it can be understood that when the first clamping member 141 and the second clamping member 142 are in the pre-closing state or the closing state, the first self-locking portion 1411 and the second self-locking portion are clamped to realize self-locking, and a side surface of the first self-locking portion 1411, which is opposite to a side surface of the second self-locking portion, does not abut.

It can be understood that, when the first clamping member 141 and the second clamping member 142 are in the pre-closing state or the closing state, in an alternative manner, as shown in the drawing direction shown in fig. 2, the lower surface of the first self-locking portion 1411 may abut against the upper surface of the second self-locking portion to achieve clamping; in another alternative, the lower surface of the second self-locking portion abuts against the upper surface of the first self-locking portion 1411 to achieve clamping.

In addition, in order to achieve reliable clamping of the first self-locking portion 1411 and the second self-locking portion and ensure stability of self-locking of the clamping group 14, in one embodiment, the surfaces of the first self-locking portion 1411, which are clamped with the second self-locking portion, may be coated with magnetic absorption layers with opposite magnetism. For example, when the lower surface of the first self-locking portion 1411 abuts against the upper surface of the second self-locking portion to realize clamping, a first magnetic attraction layer is coated on the lower surface of the first self-locking portion 1411, and a second magnetic attraction layer is coated on the upper surface of the second self-locking portion, wherein the magnetism of the first magnetic attraction layer is opposite to that of the second magnetic attraction layer; or when the lower surface of the second self-locking portion abuts against the upper surface of the first self-locking portion 1411 to realize clamping, coating a first magnetic attraction layer on the lower surface of the second self-locking portion, and coating a second magnetic attraction layer on the upper surface of the first self-locking portion 1411, wherein the magnetism of the first magnetic attraction layer is opposite to that of the second magnetic attraction layer. Alternatively, the first self-locking portion 1411 and the second self-locking portion themselves are made of two magnetically attractive materials with opposite magnetism, respectively.

Or, in another embodiment, an adhesive layer or a clamping portion may be further disposed on a surface where the first self-locking portion 1411 is clamped with the second self-locking portion, and the specific implementation process may refer to the above embodiment of the magnetic absorption layer, which is not described herein again.

In the embodiment of this embodiment, the first self-locking portion 1411 and the second self-locking portion are both of a protruding structure, that is, the first self-locking portion 1411 is disposed on the outer wall of the first clamping member 141 in a protruding manner; the second self-locking part is arranged on the outer wall of the second clamping piece 142, one end of the first self-locking part 1411 is connected with the outer wall of the first clamping piece 141, and the other end deviates from the first clamping piece 141 or protrudes towards the second clamping piece 142; one end of the second self-locking portion is connected to an outer wall of the second clamping member 142, and the other end protrudes away from the second clamping member 142 or protrudes toward the first clamping member 141. When the first clamping piece 141 and the second clamping piece 142 are in a closed state or a pre-closed state, the protruding structures on the first clamping piece 141 and the second clamping piece 142 are clamped, so that the self-locking of the clamping piece group 14 is realized.

In addition, the protruding height of the first self-locking portion 1411 relative to the first clamping member 141 and the protruding height of the second self-locking portion relative to the second clamping member 142 are set according to actual requirements, as long as it is satisfied that when the first clamping member 141 and the second clamping member 142 are switched from the open state to the pre-closed state, that is, when the first clamping member 141 and the second clamping member 142 are just closed, the first self-locking portion 1411 and the second self-locking portion just complete clamping to realize self-locking.

As shown in fig. 1 to 4, the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 are connected to the pull rod 13, so that the second end s2 is switched among the open state, the pre-closed state and the closed state under the driving of the pull rod 13 to realize the hemostatic operation. The connection manner of the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 to the pull rod 13 can be as follows: the first end s1 of the first clamping member 141 is formed with a first sliding groove 1412, the first end s1 of the second clamping member 142 is formed with a second sliding groove 1421, one end of the pull rod 13 close to the clamping member set 14 is a butt end 131, two opposite side surfaces of the butt end 131 are staggered to form two eccentric columns 132, and the two eccentric columns 132 are respectively and correspondingly slidably disposed in the first sliding groove 1412 and the second sliding groove 1421 to pull the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 to switch between an open state, a pre-closed state and a closed state. That is, the two eccentric columns 132 of the pull rod 13 respectively slide in the first sliding groove 1412 and the second sliding groove 1421, so that when the pull rod 13 is pulled to move in the axial direction thereof, the second ends s2 of the first clamping member 141 and the second ends s2 of the second clamping member 142 can be driven to move in the axial direction and the radial direction, so as to open or close.

As shown in fig. 1 and 6, two eccentric columns 132 are formed by staggering two opposite side surfaces of the docking end 131, that is, the two eccentric columns 132 are respectively located on the front surface or the back surface of the docking end 131 and extend away from each other, and since the first sliding groove 1412 and the second sliding groove 1421 are respectively located on the first clamping piece 141 and the second clamping piece 142 which are symmetrically arranged, the two eccentric columns 132 are necessarily formed by staggering, so that it is ensured that the two eccentric columns 132 are respectively located in the first sliding groove 1412 and the second sliding groove 1421. The offset formation of the two eccentric columns 132 can be understood as that the two eccentric columns 132 are respectively located on two sides of the central axis of the pull rod 13, and the projection of one of the eccentric columns 132 on the pull rod 13 is not coaxial with the projection of the other eccentric column 132 on the pull rod 13, so that the offset distribution is realized.

Specifically, the positions of the two eccentric columns 132 may be determined according to the positions of the first sliding groove 1412 and the second sliding groove 1421. It should be added that the extension lengths of the first sliding groove 1412 and the second sliding groove 1421, or the sliding strokes of the two eccentric columns 132 in the first sliding groove 1412 and the second sliding groove 1421 are determined according to the strokes from the open position to the closed position between the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142, that is, when the eccentric columns 132 slide in the first sliding groove 1412 and the second sliding groove 1421, the sliding strokes at least satisfy the requirement of switching the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 from the open position to the pre-closed position.

In addition, in order to ensure that the two eccentric columns 132 slide smoothly in the first sliding groove 1412 and the second sliding groove 1421, in this embodiment, the width of the first sliding groove 1412 and the width of the second sliding groove 1421 are set to be greater than or equal to the diameter of the eccentric column 132, so as to avoid the problem that the sliding of the eccentric column 132 in the first sliding groove 1412 and the second sliding groove 1421 is hindered, and the specific difference between the widths of the first sliding groove 1412 and the second sliding groove 1421 and the diameter of the eccentric column 132 is not limited in this embodiment. And, in the direction from the first clamping member 141 to the second clamping member 142, the size of the first sliding groove 1412 or the second sliding groove 1421 is defined as the sliding groove depth; the size of the eccentric post 132 in the axial direction of the eccentric post 132 is defined as the eccentric post height; and the depth of the sliding slot is less than or equal to the height of the eccentric column, so as to prevent the eccentric column 132 from sliding out of the first sliding slot 1412 and the second sliding slot 1421 when sliding in the first sliding slot 1412 and the second sliding slot 1421.

Since the first clamping member 141 and the second clamping member 142 are similar to a clip or the like, to drive the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142, the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 can be relatively close to each other to achieve the closing, and when the open state or the switching from the open state to the pre-closing state is performed, the extending directions of the first sliding groove 1412 and the second sliding groove 1421 can be intersected, so that a space or a moving distance for the first clamping member 141 and the second clamping member 142 to move along the axial direction of the first cannula 11 is provided.

As described above, since the first clamping member 141 and the second clamping member 142 are symmetrically disposed, the first sliding groove 1412 on the first clamping member 141 and the second sliding groove 1421 on the second clamping member 142 are respectively located at two sides of the symmetry axis of the first clamping member 141 and the second clamping member 142. In the embodiment, the first sliding groove 1412 and the second sliding groove 1421 are disposed axisymmetrically with respect to the symmetry axes of the first clamping member 141 and the second clamping member 142, so that the two eccentric columns 132 synchronously slide in the first sliding groove 1412 and the second sliding groove 1421, and further the first clamping member 141 and the second clamping member 142 synchronously move toward each other to the closed state.

As shown in fig. 1 and 6, in the present embodiment, the pull rod 13 is used to connect with the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142, so that when the pull rod 13 moves along the axial direction of the first casing 11 or the second casing 12, the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 can be driven to move close to each other or move away from each other to open. And according to the functional overview of the hemostatic clamp 1, after the second ends s2 of the first clamping member 141 and the second ends s2 of the second clamping member 142 clamp the wound, the first clamping member 141, the second clamping member 142 and the first sleeve 11 are left in the body, and other components are removed from the body, that is, the second sleeve 12 and the pull rod 13 are both removed from the body, so it can be understood that after the first clamping member 141 and the second clamping member 142 clamp the wound, the pull rod 13 needs to be at least partially separated from the first sleeve 11 and removed from the body together with the second sleeve 12.

Therefore, to achieve at least partial separation of the tie rod 13 from the first sleeve 11 and separation between the first sleeve 11 and the second sleeve 12, the structure for the tie rod 13 may be: the pull rod 13 includes a head portion 133 and a rod portion 134 connected to the head portion 133, the head portion 133 is closer to the clamping member set 14 than the rod portion 134, that is, the head portion 133 is located between the clamping member set 14 and the rod portion 134, the eccentric column 132 is formed on the head portion 133, that is, the pull rod 13 is connected to the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 through the head portion 133, so that when the rod portion 134 moves along the axial direction thereof, the rod portion 134 moves the head portion 133, so that the head portion 133 drives the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 to move, and further, the second end s2 of the first clamping member 141 and the second end s2 of the second clamping member 142 are closed or opened.

Specifically, as shown in fig. 1 to 6, when the second ends s2 and s2 of the first and

second clamping members

141 and 142 are in an open state or switched from an open state to a pre-closed state or in a pre-closed state, the head 133 and the rod 134 are still connected, when the rod 134 is pulled to move away from the clamping member set 4, the transition joint between the head 133 and the rod 134 is broken, so that the head 133 and the rod 134 are separated, the head 133 and the first and

second clamping members

141 and 142 are connected, and together with the first sleeve 11 remaining in the body and then being discharged out of the body along with the digestive system after the wound is healed, the rod 134 drives the second sleeve 12 to move in a direction away from the first sleeve 11, so that the second sleeve 12 is also separated from the first sleeve 11, and the rod 134 and the second sleeve 12 are removed from the body. That is, the pull rod 13 includes a head portion 133 and a rod portion 134, and a tearing portion 135 is formed at a transition connection between the head portion 133 and the rod portion 134 for breaking the head portion 133 and the rod portion 134 at the tearing portion 135 when the grip group 14 is already in the pre-closing state and then the pull rod 13 is continuously pulled or the force is continuously applied to the pull rod 13 to switch to the closing state, so that the head portion 133 and the rod portion 134 are separated.

In order to ensure that the pull rod 13 can be partially broken (the local breakage here means that the transition joint between the rod part 134 and the head part 133 is broken), firstly, as for the material of the pull rod 13, it is necessary to set the material to be brittle so as to facilitate the breaking; and the pull rod 13 is ensured to be broken at the tearing portion 135 arranged at the transition connection position of the head portion 133 and the rod portion 134, it can be understood that the diameter of the tearing portion 135 is smaller than the diameter of the pull rod 13 at any other position, so that the breaking position of the pull rod 13 can occur at the tearing portion 135, and the difference ratio of the diameter of the tearing portion 135 to the diameter of the pull rod 13 at any other position is set according to actual needs, and the present embodiment does not specifically limit this.

Regarding the structure of the tearing portion 135, in an alternative mode, the shaft portion 134 and the head portion 133 are processed at one time, and at this time, the tearing portion 135 may be at least one notch formed by recessing the surface of the transition joint of the shaft portion 134 and the head portion 133 toward the central axis of the pull rod 13, that is, a notch is formed between the shaft portion 134 and the head portion 133, so that a fracture is easily generated at the notch. It is understood that the notch is provided such that the diameter of the pull rod 13 at this position is smaller than the diameter of the pull rod 13 at other positions, so that breakage is likely to occur at the notch. The diameter of the notch and the notch depth of the notch (notch size in the radial direction of the tie rod 13) are not limited in this embodiment.

As to the structure of the tearing portion 135, in another alternative, the stem portion 134 and the head portion 133 are separately manufactured, in this case, the tearing portion 135 may be a joint at a transition joint of the stem portion 134 and the head portion 133, and the joint may be understood as follows, the stem portion 134 and the head portion 133 are separately processed, and then the stem portion 134 and the head portion 133 are bonded or fused or welded, at this time, when the stem portion 134 is pulled, the stem portion 134 and the head portion 133 are likely to be broken at the bonded, fused or welded position. Alternatively, the rod 134 and the head 133 are integrally processed, then the transition joint between the head 133 and the rod 134 is subjected to external force fracture treatment to form a fracture surface, and then the head 133 and the rod 134 are adhered or integrated by heat fusion or adhesion, and the like, and at this time, when the rod 134 is pulled, the rod 134 and the head 133 are fractured at the adhesion and heat fusion position.

In addition, when the internal tissue wound of the human body is clamped to stop bleeding, the position of the wound needs to be accurately found, so that the first clamping piece 141 and the second clamping piece 142 are respectively rotatably connected with the first sleeve 11 to adjust the angles between the first clamping piece 141 and the wound and between the second clamping piece 142 and the wound; and the first end s1 intersects the axial direction of the tie rod 13 with respect to the rotational axis of the first sleeve 11. In this embodiment, the first end s1 is perpendicular to the axial direction of the pull rod 13 relative to the rotation axis of the first sleeve 11, and in other embodiments, the included angle between the first end s1 and the axial direction of the pull rod 13 relative to the rotation axis of the first sleeve 11 can be set according to actual needs. In order to avoid placing too many instruments in the body and causing burden to the human body, after the first clamping member 141 and the second clamping member 142 complete the clamping action, the second sleeve 12 and the first sleeve 11 are separated, and other components except the clamping member group 14, the first sleeve 11 and a part of the pull rod 13 at the wound are released to the outside of the human body. The material of the clamping assembly 14 can be selected from a bio-corrosion-resistant material, such as titanium alloy, a polymer material, or a composite material.

For the specific connection manner of the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 to the first sleeve 11, an alternative manner is: the first end s1 of the first clamping member 141 and the first end s1 of the second clamping member 142 both have a connecting column 143 disposed toward the first sleeve 11, the first sleeve 11 has a connecting hole 111 matched with the connecting column 143, and the first clamping member 141 and the second clamping member 142 are both rotatably connected with the first sleeve 11 through the matching of the connecting column 143 and the connecting hole 111. For example, the connecting column 143 may be a pin or a dowel, and the connecting hole 111 may be a pin hole; alternatively, the connecting column 143 may be a bolt or a screw, and the connecting hole 111 may be a threaded hole, etc. And it should be understood that, when the connecting column 143 is a pin or a pin, and the connecting hole 111 is a pin hole, in order to avoid the problem that the connecting column 143 moves in the connecting hole 111 along the axial direction thereof and the rotational connection between the first clamping member 141, the second clamping member 142, and the first sleeve 11 fails, the first sleeve 11 may further be provided with a limiting member for limiting the moving distance of the connecting column 143 in the connecting hole 111.

Alternatively, the first end s1 of the first clamping member 141 and the second end s2 of the second clamping member 142 are respectively connected with the first sleeve 11 through hinges or hinges for rotational connection.

In this embodiment, the hemostatic clamp 1 further comprises a fitting member 15, the first sleeve 11 and the second sleeve 12 are detachably connected by the fitting member 15, i.e., during the process of the second end s2 of the first clamping member 141, the second end s2 of the second clamping member 142 being in the open state or switching from the open state to the pre-closed state, and in the pre-closed state, when the first sleeve 11 and the second sleeve 12 are connected together by the fitting 15, during the switching of the second ends s2 and s2 of the first and

second clamping members

141 and 142 from the pre-close state to the close state and in the close state, the separation between the fitting 15 and the first sleeve 11 and the bringing of the second sleeve 12 away from the first sleeve 11 causes the second sleeve 12 to separate from the first sleeve 11, thereby facilitating the removal of the fitting 15 together with the second cannula 12 from the body and avoiding excessive retention of the instrument in the body.

For example, the structure for the fitting 15 to achieve the separable connection between the first sleeve 11 and the second sleeve 12 may be: a blind hole is formed on the outer side wall of the first sleeve 11, a connecting part 112 is formed between the corresponding side wall of the first sleeve 11 and the fitting 15 at the blind hole, that is, a part of the wall thickness of the outer side wall of the first sleeve 11 is removed to form a blind hole 114, and then a force is applied or knocked towards the fitting 15 on the outer side wall of the first sleeve 11 at the corresponding part of the wall thickness of the blind hole 114, so that the connecting part 112 is formed between the outer side wall of the first sleeve 11 at the remaining part of the wall thickness and the outer side wall of the fitting 15 to form a connection to realize relative fixation; when the clamping group 14 is in the open state or the pre-closed state, the first sleeve 11 and the fitting 15 are relatively fixed by the connecting portion 112, and when the clamping group 14 is switched from the pre-closed state to the closed state, the rod portion 134 moves away from the clamping group 14 to abut against the fitting 15 and pushes the fitting 15 to move so that the fitting 15 is plastically deformed, and the first sleeve 11 is separated from the fitting 15.

It should be explained that the connection between the fitting 15 and the first sleeve 11 may be achieved by a local riveting between the outer sidewall of the first sleeve 11 and the fitting 15, and the separation between the fitting 15 and the first sleeve 11 is achieved by breaking between the rod portion 134 and the head portion 133 of the pull rod 13, the rod portion 134 moves towards the second sleeve 12 and abuts against the fitting 15 to continue moving towards the second sleeve 12, at this time, the rod portion 134 moves towards the second sleeve 12 against the fitting 15, at this time, the connection portion 112 is broken by a force to separate the fitting 15 from the first sleeve 11, and therefore, the connection portion 112 achieves the connection between the fitting 15 and the first sleeve 11 and the breaking separation. The caulking strength of the connection portion 135 may be set as needed so that the connection portion has a certain connection strength and is easily broken.

As for the connection of the fitting 15 to the second sleeve 12, an alternative may be: a step 151 is formed on the outer surface of the fitting 15 close to the second sleeve 12, that is, as shown in the drawing direction of fig. 1, a convex step 151 is formed on the outer surface of the right end of the fitting 15, and a groove portion matched with the step 151 is formed on the inner wall of the second sleeve 12 at a corresponding position, so that the second sleeve 12 and the fitting 15 are fixed by clamping between the step 151 and the groove portion; also, in order to enhance the stability or reliability of the connection between the fitting 15 and the second sleeve 12, the step portions 151 may be a multi-stage structure sequentially arranged along the axial direction of the fitting 15, and correspondingly, a plurality of groove portions engaged with the step portions 151 of the multi-stage structure are also arranged on the inner wall of the second sleeve 12 along the axial direction thereof. Alternatively, the step portion 151 may be provided at an annular step portion circumferentially provided along the circumferential direction of the fitting 15, and the groove portion may be correspondingly provided as an annular groove portion circumferentially provided along the circumferential direction of the inner wall of the second sleeve 12, so that the connection stability or reliability between the fitting 15 and the second sleeve 12 is improved by the cooperation of the annular step portion and the annular groove portion.

Another optional mode may also be that a connecting hole is formed in the outer surface of the assembly part 15 close to the second sleeve 12, that is, as shown in the drawing direction in fig. 1, a connecting hole is formed in the outer surface of the right end of the assembly part 15, and a connecting column matched with the connecting hole is formed in a corresponding position on the inner wall of the second sleeve 12, so that the second sleeve 12 and the assembly part 15 are fixed through matching between the connecting column and the connecting hole; or, a connecting hole is formed on the outer surface of the assembly part 15 close to the second sleeve 12, that is, as shown in the drawing direction of fig. 2, a connecting hole is formed on the outer surface of the right end of the assembly part 15, a matching hole matched with the connecting hole is formed on the inner wall of the second sleeve 12 at a corresponding position, and a fastening member penetrates through the connecting hole and the matching hole to fix the second sleeve 12 and the assembly part 15, where the fastening member may be a common fastening pin or fastening screw.

As for the connection of the fitting 15 to the first sleeve 11, an alternative may be: a convex part 152 is formed on the outer surface of one end of the assembly 15 close to the clamping piece group 14, a concave part 113 corresponding to the convex part 152 is formed on the inner wall of the first sleeve 11, and when the clamping piece group 14 is in an open state or is switched to a pre-closed state, the first sleeve 11 and the assembly 15 are connected with the concave part 113 through the convex part 152; when the set of clamps 14 is switched from the pre-closed state to the closed state, the fitting 15 is moved away from the set of clamps 14, so that the protrusions 152 on the fitting 15 are disengaged from the recesses 113 on the first sleeve 11, and the fitting 15 is separated from the first sleeve 11.

Also, in order to enhance the stability or reliability of the connection between the fitting 15 and the first sleeve 11, the protruding portions 152 may be a multi-stage structure sequentially arranged along the axial direction of the fitting 15, and correspondingly, a plurality of recessed portions 113 that are engaged with the protruding portions 152 of the multi-stage structure are also arranged on the inner wall of the first sleeve 11 along the axial direction thereof. Alternatively, the protrusion 152 may be provided in an annular protrusion circumferentially arranged along the circumferential direction of the fitting 15, and the recess 113 may be correspondingly provided in an annular recess circumferentially arranged along the circumferential direction of the inner wall of the first sleeve 11, so that the connection stability or reliability between the fitting 15 and the first sleeve 11 is improved by the cooperation of the annular protrusion and the annular recess.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the utility model and are not intended to be limiting. For a person skilled in the art to which the utility model pertains, several simple deductions, modifications or substitutions may be made according to the idea of the utility model.

Claims

1. A hemostatic clip, comprising:

a first sleeve;

a second sleeve, the first sleeve being detachably connected to the second sleeve;

2. The hemostatic clip of claim 1, wherein the first self-locking portion and the second self-locking portion are located on either side of an axis of symmetry of the first clamping member and the second clamping member, respectively.

3. The hemostatic clip of claim 1, wherein the first self-locking portion and the second self-locking portion are disposed axisymmetrically with respect to an axis of symmetry of the first clamping member and the second clamping member.

4. The hemostatic clip according to claim 1, wherein the surfaces of the first self-locking portion and the second self-locking portion that contact when the first self-locking portion and the second self-locking portion are snap-fitted are both formed as a matched inclined surface or a smooth curved surface.

5. The hemostatic clip according to claim 1, wherein when the clip set is in the pre-closed state or the closed state, a side surface of the first self-locking portion and a side surface of the second self-locking portion facing each other do not abut.

6. The hemostatic clip of claim 1, wherein the first self-locking portion protrusion is disposed on an outer wall of the first clip member; the second self-locking part is arranged on the outer wall of the second clamping piece in a protruding mode.

7. The hemostatic clip according to any one of claims 1 to 6, wherein the first end of the first clip member is formed with a first sliding groove, the first end of the second clip member is formed with a second sliding groove, and the first sliding groove intersects with an extending direction of the second sliding groove;

8. The hemostatic clip of claim 7, wherein the first sliding channel and the second sliding channel are located on either side of an axis of symmetry of the first clamping member and the second clamping member, respectively.

9. The hemostatic clip of claim 7, wherein the first sliding channel and the second sliding channel are disposed axisymmetrically with respect to an axis of symmetry of the first clamping member and the second clamping member.

10. The hemostatic clip according to claim 7, wherein two of the eccentric columns are located on two sides of the central axis of the pull rod, and the projection of one of the eccentric columns on the pull rod is not coaxial with the projection of the other eccentric column on the pull rod.

11. The hemostatic clip of claim 7,

the pull rod comprises a head part and a rod part connected with the head part, the head part is closer to the clamping piece group than the rod part, and the eccentric column is formed on the head part; a tearing part is formed at the transition connection position of the head part and the rod part;

12. The hemostatic clip of claim 11, wherein the tear portion is at least one indentation formed by a surface of the transition connection that is recessed toward a central axis of the pull rod.

13. The hemostatic clip according to any one of claims 1 to 6, wherein the first end of the first clip member and the first end of the second clip member are each rotatably connected to the first sleeve, and the first clip member and the second clip member intersect with the axial direction of the pull rod or are out-of-plane with respect to the rotational axis of the first sleeve.

14. The hemostatic clip of claim 13, wherein each of the first end of the first clip and the first end of the second clip has an attachment post disposed toward the first sleeve, the first sleeve has a connection hole that mates with the attachment post, and each of the first clip and the second clip is rotationally coupled to the first sleeve by mating the attachment post with the connection hole.

15. The hemostatic clip according to any one of claims 1-6, further comprising a fitting by which the first sleeve and the second sleeve are detachably connected; the fitting is disconnected from the first sleeve when the set of grippers is switched to the closed state.

16. The hemostatic clip according to claim 15, wherein the first sleeve has a blind hole formed on an outer sidewall thereof, the blind hole forming a connection between the corresponding sidewall of the first sleeve and the fitting; when the clamping piece group is in the open state or the pre-closed state, the first sleeve and the assembly are relatively fixed through the connecting part, and when the clamping piece group is switched to the closed state, the pull rod abuts against the assembly and pushes the assembly to move, so that the assembly is plastically deformed, and the first sleeve is separated from the assembly.

17. The hemostatic clip according to claim 15, wherein the fitting has a step formed on an outer surface thereof adjacent to the second sleeve and a groove formed on an inner wall thereof corresponding to the step.

18. The hemostatic clip of claim 17, wherein the fitting member has a protrusion formed on an outer surface thereof adjacent to one end of the set of clamping members, and a recess formed on an inner wall of the first sleeve corresponding to the protrusion, wherein when the set of clamping members is in the open position or switched to the pre-closed position, the first sleeve and the fitting member are connected to the recess via the protrusion; when the clamping piece group is switched to the closed state, the convex part and the concave part are disengaged.