CN221129959U - Hemostatic clamp - Google Patents

Abstract

The utility model discloses a hemostatic clip, which comprises a clamping piece, a sleeve, a fixing component, a connecting piece and a traction component, wherein the clamping piece is positioned at the far end of the hemostatic clip and acts on target tissues; the sleeve is used for accommodating the clamping pieces, and when the clamping pieces move into the sleeve, the sleeve forces the clamping pieces to be closed and fixes the clamping pieces; the distal end of the securing assembly is detachably connected to the proximal end of the sleeve; the distal end of the connecting piece penetrates through the fixing component and is buckled with the sleeve; the traction component passes through the connecting piece to be releasably connected with the proximal end of the clamping piece and drives the clamping piece to axially reciprocate; and the distal end of the traction component is provided with a limiting sleeve which is axially limited with the connecting piece. The fixing assembly and the sleeve are in simple sleeving connection, the structure is simplified, friction between the connecting piece and the fixing assembly and friction between other parts in the fixing assembly can be reduced, and the risk of friction separation between the connecting piece and the fixing assembly is avoided, so that the risk of connection failure of the outer sleeve and the fixing assembly is reduced.

Description

Hemostatic clamp

Technical Field

The utility model relates to the technical field of metal smelting, in particular to a hemostatic clamp.

Background

The operation should be performed in accordance with the principles of minimally invasive (MINIMALLY INVASIVE) and lesion control (damage control), while ensuring sufficient and effective hemostasis, to minimize the damage of tissue trauma. The traditional methods of ligation, suturing, electrocoagulation, filling pressure and the like have new development on the basis of inheritance. For example, the filling hemostasis method in abdominal cavity is abandoned once because of easy infection, intra-abdominal cavity syndrome, secondary hemorrhage and the like, but is still effective early life-saving measures as long as the treatment is proper. In order to prevent secondary bleeding caused by adhesion when removing gauze, sterile plastic films are used for isolating wound surfaces from gauze pads. The tourniquet, the vascular ligation, the embolism, the vascular clamp, the absorbable hemostatic clamp and the like can be adopted to effectively prevent and reduce the inter-operative bleeding.

The hemostatic clip is used for blocking blood flow by pressing a bleeding part by adopting mechanical pressure generated when the two clamping pieces are closed; then, the clamping piece is separated by the external control handle, so that the clamping piece is left in the human body to achieve the aim of continuous hemostasis. Because of adopting the mechanical hemostasis mode, the device has the advantages of no damage to adjacent tissues, low incidence rate of rebleeding, low incidence rate of adverse reaction and the like. The hemostatic clip left in the body has small volume and small stimulation to tissues.

The hemostatic clip generally comprises a spring tube, a sleeve, a clamping piece and a traction piece, wherein the spring tube is rotationally connected with the sleeve, the clamping piece can be accommodated in the sleeve, the traction piece axially pulls the clamping piece, the hemostatic clip in the prior art is mostly rotationally connected with the spring tube and the sleeve through a shoulder structure on a connecting shaft, the traction piece is separated from the sleeve by means of the end face butt of the spring tube and the sleeve when being pulled to the connecting shaft backwards, the integral structure is complex, the cost is high, the external force required by releasing the clamping piece is large, the vibration of an instrument is easy to cause, the damage to skin tissues is caused, and the requirements on the proficiency and the operation stability of doctors are high. And when the sleeve rotates, the connecting shaft can also have a small amount of rotation movement, so that the contact surface of the connecting shaft, the sleeve and the spring tube can continuously rub, and the connection failure of the two ends of the shoulder structure after the shoulder structure is flattened is easy to cause.

In addition, through holes are formed in the circumferential surface of the sleeve in the hemostatic clamp in the prior art, after the clamp piece is accommodated in the sleeve, the rear end of the clamp piece is clamped at the through holes, so that gaps are formed in the surface of the sleeve which is left in a human body, and human tissues are easy to stimulate and even damage.

Therefore, a hemostatic clip with a simple structure and easy release of the clip is needed.

Disclosure of utility model

The utility model provides a hemostatic clamp for solving the technical problems that a sleeve and a spring tube in the hemostatic clamp in the prior art are complex in connection and detachment structure and high in cost, and the connection relation between the sleeve and the spring tube is easy to fail.

The technical scheme adopted for solving the technical problems is as follows: a hemostatic clip comprising a clip, a sleeve, a fixing assembly, a connecting member and a pulling assembly, wherein the clip is positioned at the distal end of the hemostatic clip and acts on target tissue; the sleeve is used for accommodating the clamping pieces, and when the clamping pieces move into the sleeve, the sleeve forces the clamping pieces to be closed and fixes the clamping pieces; the distal end of the securing assembly is detachably connected to the proximal end of the sleeve; the distal end of the connecting piece penetrates through the fixing component and is buckled with the sleeve; the traction component passes through the connecting piece to be releasably connected with the proximal end of the clamping piece and drives the clamping piece to axially reciprocate; and the distal end of the traction component is provided with a limiting sleeve which is axially limited with the connecting piece.

When the connecting piece is buckled with the sleeve, the connecting piece and the sleeve can rotate relatively; the distal end of the connector is capable of deforming and separating from the sleeve and the securing assembly when the pulling assembly is pulled proximally.

Further, a circumferential surface near the proximal end of the sleeve is provided with an elongated slot extending in the circumferential direction, and the distal end of the connecting member is fastened in the elongated slot and moves in the circumferential direction in the elongated slot.

Further, the long groove is positioned on the inner circumferential surface of the sleeve or penetrates through the wall surface of the sleeve.

Further, the long groove is of a circular structure with a closed circumference.

Further, the long grooves are a plurality of arc grooves which are matched with the distal end heads of the connecting pieces in a one-to-one correspondence manner.

Further, the connecting piece comprises a lantern ring with a shaft hole in the center and one or more reeds connected to the lantern ring and extending towards one end, the connecting piece penetrates through the shaft hole, and the distal ends of the reeds are provided with bending parts suitable for being clamped into the long grooves.

Further, a baffle is fixed at the proximal end of the sleeve, and two sides of the baffle are separated from the sleeve to form a gap for the clamping piece to extend out.

Further, the proximal end of the sleeve is rotatably connected with a stop pin, and two sides of the stop pin and the sleeve form a gap for the clamping piece to extend out; the inner peripheral surface of the sleeve is provided with a first annular blind groove matched with two ends of the stop pin.

Further, the inner peripheral surface of the sleeve is provided with a second annular blind groove, and when the clamping piece is completely positioned in the sleeve, the proximal end of the clamping piece is hooked in the second annular blind groove.

Further, the fixing component comprises a spring tube and an inner sleeve fixed at the distal end of the spring tube, a connecting part inserted into the sleeve is arranged at the distal end of the inner sleeve, and a through hole is formed in the connecting part for the distal end of the connecting piece to pass through.

The beneficial effects of the utility model are as follows:

(1) According to the hemostatic clamp disclosed by the utility model, one end of the connecting piece is simultaneously connected with the fixing component and the sleeve, the fixing component and the sleeve are in a simple sleeving connection, the structure is simpler, the connecting piece and the sleeve can rotate relatively, when the sleeve rotates, the connecting piece does not need to rotate, the friction between the connecting piece and the fixing component and between the connecting piece and other parts in the sleeve can be reduced, the risk of friction separation between the connecting piece and the fixing component is avoided, and the risk of failure in connection between the outer sleeve and the fixing component is reduced.

(2) According to the hemostatic clamp disclosed by the utility model, the structure of the outer sleeve for fixing the clamping piece in the closed state is an annular blind groove instead of penetrating through the wall surface of the outer sleeve, and after release, the hook part at the proximal end of the clamping piece is shielded by the outer sleeve and cannot contact with human tissues, so that the outer sleeve is integrated in structure, no additional notch or edge is formed, and irritation is reduced.

(3) According to the hemostatic clip disclosed by the utility model, the retaining pin is rotationally connected to the distal end of the sleeve, so that when the clamping piece rotates, the sleeve does not need to synchronously rotate, and friction with human tissues is reduced.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is an exploded schematic view of an embodiment of a hemostatic clip according to the present utility model;

FIG. 2 is an axial cross-sectional view of an embodiment of a hemostatic clip according to the present utility model in an open state;

FIG. 3 is an enlarged view at a of FIG. 2;

FIG. 4 is a schematic view of the hemostatic clip of FIG. 2 in a closed state;

FIG. 5 is a schematic view of the hemostatic clip of FIG. 2 in a to-be-released state;

FIG. 6 is a schematic view of the hemostatic clip of FIG. 2 in a disengaged state;

FIG. 7 is a perspective view of a connector of the present utility model;

FIG. 8 is an axial cross-sectional view of an embodiment of a hemostatic clip according to the present utility model in an open state;

FIG. 9 is a perspective view of the sleeve of FIG. 8;

Fig. 10 is a front view of fig. 9;

FIG. 11 is a perspective view of an embodiment of a hemostatic clip according to the present utility model in an open state;

Fig. 12 is an axial cross-sectional view of fig. 11.

In the figure, 1, a clamping piece, 101, a claw part, 102, a hook part, 2, a sleeve, 3, a fixing component, 301, a spring tube, 302, an inner sleeve, 3021, a connecting part, 4, a connecting piece, 401, a shaft hole, 402, a lantern ring, 403, a reed, 404, a bending part, 5, a pulling component, 501, a limiting sleeve, 6, a long groove, 7, a baffle, 8, a baffle pin, 9, a first annular blind groove, 10, a second annular blind groove, 11, a driving handle, 12 and a through hole.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the present utility model, the term "proximal" refers to the end that is closer to the operator at the time of surgery, and "distal" refers to the end that is farther from the operator at the time of surgery, or the end that is closer to the target tissue.

Example 1

As shown in fig. 1-6, a hemostatic clip comprises a clip 1, a sleeve 2, a fixing component 3, a connecting piece 4 and a pulling component 5, wherein the clip 1 is positioned at the distal end of the hemostatic clip and acts on target tissues, and the clip 1 is provided with two claw parts 101 which can be opened or closed; the sleeve 2 is used for accommodating the clamping piece 1, when the distal end of the clamping piece 1 is opened, the clamping piece 1 is partially positioned in the sleeve 2, when the clamping piece 1 moves into the sleeve 2, the sleeve 2 forces the clamping piece 1 to be closed and fixes the clamping piece 1, the clamping piece 1 and the sleeve 2 can be released together in a human body, and for convenience of description, the structure after the clamping piece 1 and the sleeve 2 are relatively fixed is named as a release assembly; the distal end of the fixing assembly 3 is detachably connected with the proximal end of the sleeve 2, and the detachable connection can be mutually sleeved or partially spliced; the distal end of the connecting piece 4 penetrates through the fixing component 3 and is buckled with the sleeve 2; a traction component 5 is releasably connected with the proximal end of the clamping piece 1 through the connecting piece 4 and drives the clamping piece 1 to axially reciprocate; and the distal end of the pulling assembly 5 has a stop collar 501 axially limited to the connector 4. When the connecting piece 4 is buckled with the sleeve 2, the connecting piece and the sleeve can rotate relatively; when the pulling assembly 5 is pulled proximally, the distal end of the connector 4 can deform and separate from the sleeve 2 and the securing assembly 3.

The sleeve 2 is of a cylindrical structure, the proximal ends of the two claw parts 101 of the clamping piece 1 are mutually hinged and are releasably connected with the traction component 5 in the sleeve 2, the distal ends of the two claw parts 101 can be opened or closed, when the clamping piece 1 is closed and fixed in the sleeve 2 to form a release component, the traction component 5 can be separated from the clamping piece 1 to enable the release component to be released, compared with a traditional structure, the sleeve 2 is sleeved with the fixing component 3, so that an inner layer structure and an outer layer structure are formed, the outer surface of the proximal end of the sleeve 2 is smoother, no bending part 404 is arranged, and damage to human tissues after release is reduced.

One end of connecting piece 4 passes fixed subassembly 3 back and is connected with sleeve 2, and not through both ends convex shoulder axial limit to connecting piece 4 receives fixed subassembly 3 restriction can not rotate along with sleeve 2, and connecting piece 4 does not have the joint face friction with fixed subassembly 3, reduces the risk that fixed subassembly 3 drops, and connecting piece 4 passes through end and sleeve 2 lock joint, and not convex shoulder cooperation, and both contact surface reduces, further reduces the contact surface friction, and then reduces the risk that connecting piece 4 breaks away from with sleeve 2.

The limiting sleeve 501 of the traction assembly 5 pulls the connecting piece 4 to separate the connecting piece 4 from the sleeve 2 and the fixing assembly 3, so that connection between the sleeve 2 and the fixing assembly 3 disappears, compared with a traditional connecting sleeve, the end head area of the connecting piece 4 is small, the deformable space is large, the connecting piece is easy to separate from the sleeve 2 after being stressed, and the operation difficulty is reduced.

The connector 4 may, but is not limited to, take the following structure:

Connector 4 includes a collar 402 having a shaft bore 401 in the centre and one or more tongues 403 attached to collar 402 and extending towards one end, connector 4 passing through shaft bore 401, the distal end of tongues 403 having a bent portion 404 adapted to snap-fit with sleeve 2. As shown in fig. 7, two reeds 403 are symmetrically arranged on the collar 402, the two reeds 403 and the collar 402 form a V-shaped structure, the connecting piece 4 extends into the sleeve 2, and the bending part 404 is bent outwards and fastened on the sleeve 2. The diameter of the shaft hole 401 needs to be smaller than the outer diameter of the limiting sleeve 501, and when the pulling assembly 5 is pulled backwards, the limiting sleeve 501 abuts against the end face of the collar 402, so that the connecting piece 4 is driven to move backwards.

As shown in fig. 1 to 3, the fixing assembly 3 includes a spring tube 301 and an inner sleeve 302 fixed to the distal end of the spring tube 301, the distal end of the inner sleeve 302 is provided with a connection portion 3021 inserted into the interior of the sleeve 2, and the connection portion 3021 is provided with a through hole 12 through which the distal end of the connection member 4 passes.

The sleeve 2 is rotatably connected with the connecting piece 4:

The circumferential surface near the proximal end of the sleeve 2 has a long groove 6 extending in the circumferential direction, and the distal end of the connector 4 is locked in the long groove 6 and moves in the circumferential direction in the long groove 6. The long groove 6 may be a blind groove located on the inner peripheral surface of the sleeve 2, or may penetrate the wall surface of the sleeve 2. When the long groove 6 is a blind groove, the outer surface of the sleeve 2 can be smoother, and no notch exists. The long groove 6 can have the following two designs:

The first is that the long groove 6 has a ring structure with a closed circumference, as shown in fig. 3, the long groove 6 does not penetrate the wall surface of the sleeve 2, and the bending portion 404 of the connector 4 can rotate at any angle with respect to the circumference of the sleeve 2.

The second is that the long groove 6 is a plurality of arc grooves which are matched with the distal end heads of the connecting pieces 4 in a one-to-one correspondence manner. As shown in fig. 8-10, the connecting piece 4 has two bending parts 404, two arc grooves are correspondingly provided, the two bending parts 404 are respectively clamped in the two arc grooves, the arc grooves limit the rotation angle of the sleeve 2, and the clamping piece 1 only needs to rotate in a specific angle.

As shown in fig. 5, the proximal end of the clip 1 is usually provided with a hook 102, the sleeve 2 is provided with a fixing hole, and the clip 1 continues to move backward after moving and closing into the sleeve 2 until the hook 102 reaches the fixing hole and is inserted into the fixing hole, so as to fix the clip 1 and the sleeve.

The proximal end of the sleeve 2 is fixed with a baffle 7, two sides of the baffle 7 are separated from the sleeve 2 to form a gap for the clamping piece 1 to extend out, as shown in fig. 2, two claw parts 101 of the clamping piece 1 extend out of the sleeve 2 from two sides of the baffle 7 respectively, and when the clamping piece 1 is pushed out distally, the baffle 7 can promote the two claw parts 101 to be separated from each other. Since the baffle 7 is fixed to the sleeve 2, when the clip 1 rotates, the sleeve 2 also rotates together.

As shown in fig. 1, the traction component 5 is driven by the driving handle 11 to rotate or axially move, and the fixing component 3 is rotationally connected with the driving handle 11.

Example two

The difference between this embodiment and the first embodiment is that: as shown in fig. 11, the baffle 7 at the proximal end of the sleeve 2 is replaced by a baffle pin 8 rotatably connected with the sleeve 2, and a gap for the clamping piece 1 to extend is formed between two sides of the baffle pin 8 and the sleeve 2; the inner peripheral surface of the sleeve 2 is provided with first annular blind grooves 9 matched with two ends of the stop pin 8. When the clamping piece 1 rotates, the retaining pin 8 can rotate in the first annular blind groove 9, so that the sleeve 2 is kept still, and friction between the sleeve 2 and human tissues is reduced.

The sleeve 2 in this embodiment may be an integral structure, or may be formed by splicing an inner sleeve 201 and an outer sleeve 202 that are sleeved axially, as shown in fig. 12, where the outer sleeve 202 is located at the distal end of the inner sleeve 201, and a first annular blind groove 9 is formed between the outer sleeve 202 and the inner sleeve 201 by reducing the wall thickness of the outer sleeve 202.

Example III

The difference between this embodiment and the above embodiment is that, as shown in fig. 5, the fixing hole on the sleeve 2 for fixing the clip 1 is modified to be located in the second annular blind groove 10 on the inner peripheral surface of the sleeve 2, when the clip 1 is completely located in the sleeve 2, the proximal end of the clip 1 is hooked in the second annular blind groove 10, at this time, the hook 102 of the clip 1 can be hidden in the sleeve 2 and does not contact with human tissue, after the hemostatic clip is released, the clip 1 clamps the tissue and fixes in the sleeve 2, the sleeve 2 is structurally integrated, no additional notch or corner is provided, and irritation is reduced.

As shown in fig. 2, when the clip 1 is in the open state, the connecting piece 4 is clamped in the long groove 6, the hook 102 of the clip 1 is not hooked in the second annular blind groove 10, and the pulling piece 5 is connected with the clip 1. When the pulling member 5 is pulled backwards, the clamping piece 1 is closed to be in the state shown in fig. 4, then the pulling member 5 is pulled backwards continuously, the hook part 102 of the clamping piece 1 is hooked in the second annular blind groove 10, and the pulling member 5 is separated from the clamping piece 1 (as shown in fig. 5); when the pulling 5 is pulled backwards until the limiting sleeve 501 abuts against the connecting piece 4, the bending part 404 of the connecting piece 4 deforms to separate from the sleeve 2 and the fixing component 3, and the sleeve 2 and the fixing component 3 are separated accordingly, as shown in fig. 6, the release component formed by the sleeve 2 and the clamping piece 1 is left in the human body.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "center", "inner", "outer", "axial", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

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. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In this specification, a schematic representation of the terms does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (7)

1. A hemostatic clip, comprising:

a clamping piece (1) which is positioned at the far end of the hemostatic clamp and acts on target tissue;

The sleeve (2) is used for accommodating the clamping piece (1), and when the clamping piece (1) moves into the sleeve (2), the sleeve (2) forces the clamping piece (1) to be closed and fixes the clamping piece (1);

A fixing component (3), wherein the distal end of the fixing component (3) is detachably connected with the proximal end of the sleeve (2);

The distal end of the connecting piece (4) penetrates through the fixing assembly (3) and is buckled with the sleeve (2);

a traction component (5), wherein the traction component (5) passes through the connecting piece (4) to be releasably connected with the proximal end of the clamping piece (1) and drives the clamping piece (1) to axially reciprocate; the distal end of the traction component (5) is provided with a limiting sleeve (501) which is axially limited with the connecting piece (4);

When the connecting piece (4) is buckled with the sleeve (2), the connecting piece and the sleeve can rotate relatively; when the pulling assembly (5) is pulled proximally, the distal end of the connecting piece (4) can deform and separate from the sleeve (2) and the fixing assembly (3); the circumference surface near the proximal end of the sleeve (2) is provided with a long groove (6) extending along the circumferential direction, and the distal end of the connecting piece (4) is buckled in the long groove (6) and moves along the circumferential direction in the long groove (6); the connecting piece (4) comprises a lantern ring (402) with a shaft hole (401) at the center and one or more reeds (403) connected to the lantern ring (402) and extending towards one end, the connecting piece (4) passes through the shaft hole (401), and the distal end of each reed (403) is provided with a bending part (404) suitable for being clamped into the long groove (6);

The fixing assembly (3) comprises a spring tube (301) and an inner sleeve (302) fixed at the distal end of the spring tube (301), a connecting portion (3021) inserted into the sleeve (2) is arranged at the distal end of the inner sleeve (302), and a through hole (12) is formed in the connecting portion (3021) for allowing the distal end of the connecting piece (4) to penetrate.

2. A hemostatic clip according to claim 1, wherein: the long groove (6) is positioned on the inner peripheral surface of the sleeve (2) or penetrates through the wall surface of the sleeve (2).

3. A hemostatic clip according to claim 2, wherein: the long groove (6) is of a circular structure with a closed circumference.

4. A hemostatic clip according to claim 2, wherein: the long grooves (6) are a plurality of arc grooves which are matched with the distal end heads of the connecting pieces (4) in a one-to-one correspondence manner.

5. A hemostatic clip according to claim 1, wherein: a baffle (7) is fixed at the proximal end of the sleeve (2), and two sides of the baffle (7) are separated from the sleeve (2) to form a gap for the clamping piece (1) to extend out.

6. A hemostatic clip according to claim 1, wherein: the proximal end of the sleeve (2) is rotationally connected with a blocking pin (8), and gaps for the clamping pieces (1) to extend out are formed between two sides of the blocking pin (8) and the sleeve (2);

The inner peripheral surface of the sleeve (2) is provided with a first annular blind groove (9) matched with two ends of the stop pin (8).

7. A hemostatic clip according to any one of claims 1-6 wherein: the inner peripheral surface of the sleeve (2) is provided with a second annular blind groove (10), and when the clamping piece (1) is completely positioned in the sleeve (2), the proximal end of the clamping piece (1) is hooked in the second annular blind groove (10).