CN214511243U

CN214511243U - Hemostatic clamp

Info

Publication number: CN214511243U
Application number: CN202022712098.7U
Authority: CN
Inventors: 王光岩; 宋成利; 闫士举
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2020-11-22
Filing date: 2020-11-22
Publication date: 2021-10-29
Anticipated expiration: 2030-11-22

Abstract

The utility model relates to a hemostatic clamp, handle (1) that have to be located the side of near-end, control line (4) in sheath pipe (3) and the sheath pipe (3) that are arranged in between handle (1) and clip subassembly (2) are located to clip subassembly (2) of distal end side, the distal end side of sheath pipe (3) can release and be connected with holder (5), clip subassembly (2) is connected to the distal end side of holder (5), is equipped with connecting piece (6) on clip subassembly (2), connecting piece (6) link to each other with the distal end side of control line (4). Compared with the prior art, the utility model has the advantages of can realize the hysteresis separation of control line, still can effectively adjust it after hemostatic clamp release, simple structure, convenient operation.

Description

Hemostatic clamp

Technical Field

The utility model relates to the technical field of medical devices, concretely relates to hemostatic clamp.

Background

The existing hemostatic clamp is fed in through an endoscope channel to perform hemostasis or clamping operation on a wound surface, and for the conditions of large wound and the like, a nylon rope is required to be used for suture. The hemostatic clip achieves the purpose of hemostatic clipping by mainly mechanically compressing blood vessels and surrounding tissues through a clamp or furling a plurality of titanium clips through nylon ropes, belongs to a mechanical method, and does not cause coagulation, denaturation and necrosis of mucosal tissues. The operation has the advantages of small wound, rapid hemostasis and closure, low wound recurrence rate, few complications, and definite therapeutic effect. The existing hemostatic clamp has the clamping function, and generally has the performance of rotation and the like to realize the flexible adjustment of the angle when the titanium clamp clamps tissues.

The invention patent CN111544075A discloses a novel hemostatic clamp, which has a handle located at the proximal end side, a clamp assembly located at the distal end side, a sheath located between the handle and the clamp assembly, and a control wire located in the sheath, wherein the distal end of the sheath has a fixed seat, and the distal end of the control wire has a release part, wherein the clamp assembly comprises: a clip body; a cartridge, wherein the transition connection portion of the cartridge body has a release hole with which a release portion at a distal side of the control wire is releasably connected, the transition connection portion having a radial restriction to restrict expansion of the release hole in a radial direction. On the basis of not increasing clip overall structure complexity, the technical problem of control line release in advance has been solved, ensures that the clip subassembly can not break away from with the control line too early before the locking, avoids organizing technical problem such as tearing, clip location inaccurate.

However, when the hemostatic clamp is separated from the control line and released, the hemostatic clamp will not be controlled, and it is difficult to adjust the angle between the hemostatic clamp and the wound surface. Particularly, when a plurality of hemostatic clips are used, the hemostatic clips are not easy to maintain a desired state perpendicular to the surface of the nylon rope along with the tightening of the nylon rope, so that the suture effect is not good, and even the problem of perforation is caused. How to adjust the angle between the hemostatic clamp and the wound surface after the hemostatic clamp is released is a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hemostatic clamp for overcoming the defects existing in the prior art, realizing the lag separation of a control line and still effectively adjusting the hemostatic clamp after the release.

The purpose of the utility model can be realized through the following technical scheme: the utility model provides a hemostatic clamp, has the handle that is located the near-end side, the clip subassembly of distal end side, is located the sheath pipe between handle and the clip subassembly and is located the control line in the sheath pipe, the distal end side of sheath pipe can release and be connected with the holder, the clip subassembly is connected to the distal end side of holder, be equipped with the connecting piece on the clip subassembly, the connecting piece links to each other with the distal end side of control line.

The clamp assembly is clamped under the action of the control line and fixed on the clamp seat under the action of the connecting piece, the connecting piece can be still connected with the far-end side of the control line after the near-end side of the control line is broken, the angle of the clamp assembly is adjusted by pulling the control line, the control line is separated from the connecting piece by using an electric knife after the adjustment is finished, and the control line is pulled out.

Further, the clamp assembly comprises at least two clamping arms and a guide sheet arranged between the clamping arms and the connecting piece, the far end side of the connecting piece is connected with the guide sheet, and the near end side of the connecting piece is connected with the control line. The guide sheet drives the clamping arm to clamp under the pulling of the connecting piece.

Furthermore, the near end side of the clamping arm is rotatably connected to the clamping seat through the rotating shaft, the clamping seat is provided with an internal channel capable of restraining the connecting piece and the control line moving path, the near end side of the clamping seat is provided with a fixing groove, and the far end side of the sheath tube is provided with a releasing part matched with the fixing groove, so that the clamping seat and the sheath tube can be connected in a releasable manner.

The release portion include the release shell fragment of inwards buckling, set up the release boss and the setting at the inboard fixed ring of release shell fragment at the release shell fragment tip, fixed ring external diameter the same with sheath pipe internal diameter, the release boss is connected with fixed recess block after the release shell fragment is propped up by fixed ring.

The sheath tube is provided with a fixing elastic sheet which is bent inwards at the near end side of the fixing ring to limit the fixing ring and prevent the fixing ring from excessively moving to the near end side; and the far end side of the control wire is provided with a far end connecting part used for being connected with the connecting piece.

When the fixed ring is located the release shell fragment is inboard, the release shell fragment is propped up, release boss and fixed recess block on the release shell fragment make holder and sheath pipe block fixed, when to near end side pulling control line, the release arch drives fixed ring and moves to near end side, makes the skew release shell fragment of fixed ring, and the release shell fragment is rolled over in the release boss and the separation of fixed recess, makes holder and sheath pipe do not have the separation resistance.

The clamping seat is internally provided with a positioning boss matched with the deformation part.

Furthermore, the connecting piece is made of elastic organic materials, the deformation part comprises a hollow part and a bending angle, and the bending angle is clamped on the near end side of the positioning boss after being stretched and deformed.

The control line be equipped with near-end connecting portion in the near-end side, connect vice control line through the connecting portion of breaking, the near-end side of vice control line connect the handle, the distal end side is equipped with and is used for the vice distal end connecting portion that links to each other with the connecting portion of breaking.

Furthermore, the fracture connecting part is in a dumbbell-shaped structure and comprises a secondary control line connecting part located on the near end side, a second control line connecting part located on the far end side and a connecting part located between the secondary control line connecting part and the second control line connecting part. The connecting portion are weak sections, and the fracture threshold value is low, can break under the effect of certain pulling force, makes control line and vice control line separation, and control line near-end side becomes the free end, and control line and handle separation realize the one-level release.

The handle include fixed part and regulating part, the regulating part slides and sets up on the fixed part, the near-end side of sheath pipe connect the fixed part, the near-end side of vice control line connects the regulating part. The adjusting part moves towards the near-end side of the fixing part, the auxiliary control line and the control line connected with the auxiliary control line move towards the near-end side relative to the sheath tube and the clamping seat, the control line is pulled to drive the connecting piece to move towards the near end, and the connecting piece drives the guide sheet to act, so that the clamping arm of the clamp assembly is clamped. The connecting piece takes place plastic deformation and passes the location boss under the pulling of control line, and after the one-level release, the connecting piece kick-backs, and the angle of buckling is blocked in the near-end side of location boss when kick-backing, can not continue to kick-back to distal end side to guaranteed clamping arm press from both sides tightly all the time.

In the present invention, the proximal side refers to the side close to the operator, and the distal side refers to the side close to the target.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model realizes the lag separation of the control line by arranging the connecting piece, and can still effectively adjust the hemostatic clamp after the hemostatic clamp is released;

2. the utility model has the advantages that through the arrangement of the fracture connection part, the fracture threshold value is low, and the fracture can occur under the action of certain tension, so that the control line is separated from the auxiliary control line, the control line is separated from the handle, and the first-stage release is realized;

3. the connecting piece of the utility model is still connected with the control line after the first-level release, the angle of the clamp component can be adjusted by pulling the control line, the control line is separated from the connecting piece by using the electrotome after the adjustment is finished, and the control line is drawn out;

4. the connecting piece of the utility model is clamped at the near end side of the positioning boss after deformation, thereby ensuring that the clamping arm is always clamped after the first-level release;

5. the utility model discloses a fixed recess, release portion and with the control line on release bellied cooperation design, make

The clamping seat is connected with the sheath tube in a releasable way, and the structure is simple and the operation is convenient.

Drawings

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

FIG. 2 is a schematic view of a partial structure of the clip assembly of the present invention;

FIG. 3 is a schematic view showing the structural relationship between the clamp holder and the connecting member of the present invention;

fig. 4 is a schematic view of the distal end structure of the sheath tube of the present invention;

fig. 5 is a schematic view of the structure of the near-end side of the control line of the present invention;

FIG. 6 is a schematic structural view of the connecting member of the present invention;

FIG. 7 is a schematic view of the connection relationship between the near-end side of the control line and the auxiliary control line;

fig. 8 is a schematic structural view of the fracture joint of the present invention;

in the figure: 1-handle, 11-fixed part, 12-adjustment part, 2-clip component, 21-clip arm, 211-pivot, 22-guide plate, 3-sheath, 31-release part, 311-release spring, 312-release boss, 313-fixing ring, 32-fixing spring, 4-control wire, 41-release protrusion, 42-distal connection part, 43-proximal connection part, 5-clip seat, 51-fixing groove, 52-positioning boss, 6-connection part, 61-first control wire connection part, 62-guide plate connection part, 63-deformation part, 7-fracture connection part, 71-auxiliary control wire connection part, 72-second control wire connection part, 73-connection part, 8-auxiliary control wire, 81-minor distal connection.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The following examples are carried out on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following examples.

Example 1

A hemostatic clamp, as shown in figure 1, comprises a handle 1, a clamp assembly 2, a sheath 3, a control wire 4, a clamp seat 5 and a connecting piece 6. Handle 1 is located the near-end side, including fixed part 11 and the regulation part 12 of sliding setting above that, and clip subassembly 2 is located the distal end side, and sheath pipe 3 is located between handle 1 and clip subassembly 2, and near-end side is connected on fixed part 11, and control line 4 is arranged in sheath pipe 3, passes holder 5 and links to each other with connecting piece 6, moves connecting piece 6 and removes to near-end side under the effect of handle 1, and then drives the clip subassembly 2 that links to each other with connecting piece 6 and press from both sides tightly.

The clamp assembly 2 comprises two clamping arms 21, as shown in fig. 2, each clamping arm 21 is connected to the connecting member 6 via a guide 22, and when the connecting member 6 moves to the proximal side, the guide 22 is driven to move, so that the clamping arms 21 rotatably connected to the clamping base 5 via the rotating shaft 211 are clamped.

As shown in fig. 3, the holder 5 has an inner passage capable of restricting the moving path of the connecting member 6 and the control wire 4, and the proximal end side of the holder 5 is provided with a fixing groove 51 for releasable connection with the sheath 3. The distal end side of the holder 5 is provided with a positioning boss 52 for positioning the connecting member 6, and after the connecting member 6 is stretched and deformed toward the proximal end side, the connecting member 6 is clamped on the positioning boss 52.

As shown in fig. 4, the sheath 3 is provided with a releasing portion 31 at the distal end side, and includes a releasing elastic sheet 311 bent inward, a releasing boss 312 provided at the end of the releasing elastic sheet 311, and a fixing ring 313 provided at the inner side of the releasing elastic sheet 311, the outer diameter of the fixing ring 313 is the same as the inner diameter of the sheath 3, the releasing boss 312 is engaged with the fixing groove 51 after the releasing elastic sheet 311 is supported by the fixing ring 313, as shown in fig. 5, the control wire 4 is provided with a releasing protrusion 41 and a distal end connecting portion 42 for connecting with the connecting member 6, after the fixing ring 313 is deviated from the releasing elastic sheet 311 by the releasing protrusion 41 provided on the control wire 4 toward the proximal end side, the releasing elastic sheet 311 is bent inward, the releasing boss 312 is also moved inward, and is separated from the fixing groove 51, so that there is no resistance to separation between the sheath 3 and the holder 5. Wherein, the fixing ring 313 will not move to the proximal side of the sheath 3 under the action of the fixing elastic sheet 32 arranged on the side wall of the sheath 3.

As shown in fig. 6, the specific structure of the connecting member 6 includes a first control line connecting portion 61 located at the proximal end side, a guiding sheet connecting portion 62 located at the distal end side, and a deformation portion 63 located therebetween, the connecting member 6 is made of an elastic organic material, has certain rigidity and flexibility, and can be damaged by an electric knife, the deformation portion 63 includes a hollow portion and a bending angle, and the bending angle is stretched and deformed to be clamped at the proximal end side of the positioning boss 52, so as to ensure the clamping of the clamping arm 21.

As shown in fig. 7, the control wire 4 is provided with a proximal end connection portion 43 on the proximal end side, a sub control wire 8 is connected through a fracture connection portion 7, the proximal end side of the sub control wire 8 is connected to the adjustment portion 12, and the distal end side is provided with a sub distal end connection portion 81 for connection with the fracture connection portion 7.

As shown in fig. 8, the break connection 7 is a dumbbell-shaped structure including a secondary control line connection 71 on the proximal side and a second control line connection 72 on the distal side and a connection 73 therebetween. The connection portion 73 has a low fracture threshold and can be fractured under a certain tensile force, so that the control line 4 and the auxiliary control line 8 are separated, the proximal end side of the control line 4 becomes a free end, and the control line 4 is separated from the handle 1, thereby realizing primary release.

The specific operation process is as follows: the operator places the hemostatic clamp near the target position, through adjustment handle 1, make control line 4 drive connecting piece 6 to the side motion of near-end, arm lock 21 presss from both sides tight target object under the effect of guide vane 22, keep fixed part 11 motionless, continue to the side pulling regulating part 12 of near-end, connecting piece 6 takes place to warp under the effect of pulling force, meanwhile, release arch 41 that sets up on the control line 4 drives fixed ring 313 and moves to the side of near-end, lead to releasing shell fragment 311 and inwards buckle, release boss 312 and fixed recess 51 separation, make sheath pipe 3 and holder 5 have no separation resistance. And the adjusting part 12 is continuously pulled to the near-end side, the deformation of the connecting piece 6 is finished, so that the force of the control line 4 and the auxiliary control line 8 borne by the two ends of the broken connecting part 7 is increased until the breaking threshold value of the connecting part 73 is reached, the connecting part 73 is broken, the control line 4 and the auxiliary control line 8 are separated, meanwhile, the sheath tube 3 and the clamping seat 5 are separated, the primary release is finished, and at the moment, the far-end side of the control line 4 is still connected with the connecting piece 6.

And then other hemostatic clamps are sequentially placed near the target position, the control wire 4 is long enough, thin enough, smooth enough and rigid enough, so that enough control wires 4 can be accommodated near the target position without being entangled with each other. The operator can be as required, through the angle of pulling control line 4 adjustment clip subassembly, after the operation, uses the electrotome to cut off the near-end side of connecting piece 6, and the control line 4 distal end side of being connected with it separates with connecting piece 6 promptly, takes out control line 4 in proper order, accomplishes all operations.

The embodiments described above are described in order to facilitate understanding and use by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a hemostatic clamp, has handle (1) that is located the near-end side, clip subassembly (2) of distal end side, is located sheath pipe (3) between handle (1) and clip subassembly (2) and is located control line (4) in sheath pipe (3), its characterized in that, the distal end side of sheath pipe (3) can release and be connected with holder (5), clip subassembly (2) is connected to the distal end side of holder (5), is equipped with connecting piece (6) on clip subassembly (2), connecting piece (6) link to each other with the distal end side of control line (4).

2. The hemostatic clamp according to claim 1, wherein the clamp assembly (2) comprises at least two clamping arms (21) and a guide plate (22) disposed between the clamping arms (21) and the connecting member (6), wherein the connecting member (6) is connected to the guide plate (22) at a distal side and to the control wire (4) at a proximal side.

3. The hemostatic clamp according to claim 2, wherein the proximal side of the clamping arm (21) is rotatably connected to the clamping seat (5) through a rotating shaft (211), the clamping seat (5) has an internal passage capable of restricting the moving path of the connecting member (6) and the control wire (4), the proximal side of the clamping seat (5) is provided with a fixing groove (51), and the distal side of the sheath (3) is provided with a releasing portion (31) matched with the fixing groove (51).

4. The hemostatic clamp according to claim 3, wherein the release portion (31) comprises a release spring (311) bent inwards, a release boss (312) arranged at the end of the release spring (311) and a fixing ring (313) arranged at the inner side of the release spring (311), the outer diameter of the fixing ring (313) is the same as the inner diameter of the sheath (3), and the release boss (312) is clamped and connected with the fixing groove (51) after the release spring (311) is propped up by the fixing ring (313).

5. The hemostatic clamp according to claim 4, wherein the control wire (4) is provided with a release protrusion (41), the release protrusion (41) is located at the distal end side of the fixing ring (313), the outer diameter of the release protrusion is between the inner diameter and the outer diameter of the fixing ring (313), and the sheath (3) is provided with an inward bent fixing spring piece (32) at the proximal end side of the fixing ring (313); the far end side of the control wire (4) is provided with a far end connecting part (42) used for being connected with the connecting piece (6).

6. The hemostatic clamp according to claim 1, wherein the proximal end of the connecting member (6) is provided with a first control wire connecting portion (61), the distal end is provided with a guide sheet connecting portion (62), a deformation portion (63) is provided therebetween, and the clamping seat (5) is provided with a positioning boss (52) engaged with the deformation portion (63).

7. The hemostatic clamp according to claim 6, wherein the connecting member (6) is made of an elastic organic material, and the deformable portion (63) comprises a hollow portion and a bent corner, and the bent corner is stretched and deformed to be caught on the proximal end side of the positioning boss (52).

8. Hemostatic clamp according to claim 1, wherein the control wire (4) is provided with a proximal connection (43) at the proximal side, and a secondary control wire (8) connected via a break connection (7), wherein the secondary control wire (8) is connected to the handle (1) at the proximal side and is provided with a secondary distal connection (81) at the distal side for connection to the break connection (7).

9. Hemostatic clip according to claim 8, wherein the fracture connection (7) is a dumbbell-shaped structure comprising a secondary control line connection (71) on the proximal side and a second control line connection (72) on the distal side and a connection (73) there between.

10. The hemostatic clamp according to any one of claims 8 to 9, wherein the handle (1) comprises a fixing portion (11) and an adjusting portion (12), the adjusting portion (12) is slidably disposed on the fixing portion (11), the proximal side of the sheath (3) is connected to the fixing portion (11), and the proximal side of the auxiliary control wire (8) is connected to the adjusting portion (12).