CN220158344U - Clamp head assembly and double-arm clamp applying same - Google Patents

Abstract

The utility model relates to a clamp head assembly and a double-arm clamp using the same, wherein a first clamping arm and a second clamping arm are respectively formed by a front end and an arm body connected with the front end, the front ends of the first clamping arm and the second clamping arm are respectively of a single-tooth structure, the single-tooth structure extends from the far end of the arm body towards the near end of the arm body, and the single-tooth structure and the arm body are arranged at an acute angle; the pliers head frame comprises a head end and a main body part which are connected with each other, a first through hole and a second through hole are arranged on each arm body in a staggered mode, the two arm bodies are arranged on the pliers head frame through the connecting piece penetrating through the two first through holes, the two second through holes are used for connecting traction pieces, and the traction pieces are operated to enable the corresponding connecting arm bodies to swing around the first through holes relative to the pliers head frame. By applying the clamp head assembly, as the front end of the clamp arm is provided with the single-tooth structure and is arranged at an acute angle with the arm body, when the clamp arm hooks target tissues, the front end of the single-tooth structure is in point contact, the hooked tissues are more convenient to hook, and the hooked tissues are not easy to slip due to the arrangement of the acute angle.

Description

Clamp head assembly and double-arm clamp applying same

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a clamp head assembly and double-arm pliers using the same.

Background

With the development of society and the increasing level of living of people, patients suffering from gastrointestinal diseases caused by various reasons are very common, and especially, gastrointestinal perforation bleeding. Hemostasis of some larger wounds often requires the assistance of a hemostatic or anastomotic clip. The hemostatic clips are smaller than the anastomotic clips and are only suitable for hemostasis of small wounds, because the hemostatic clips or the anastomotic clips are matched with an endoscope, and particularly the hemostatic clips need to enter through the forceps channel holes of the endoscope, and the tissue clips of one hemostatic clip can only perform hemostasis operation at a time. In the face of this situation, a hemostatic device has been developed which is adapted to the tissue clamping of a large wound or a plurality of adjacent wounds. For example, CN209301207U discloses a solution in which the anastomotic clip is usually mounted in a transparent cap which is sleeved over the head end of the lens of the endoscope, instead of the forceps opening of the endoscope, so that the outer diameter of the anastomotic clip is larger than that of the hemostatic clip, and is more suitable for bleeding tissue facing a large wound or a plurality of adjacent wounds.

For hemostasis of a large wound or a plurality of adjacent wounds, a transparent cap is sleeved at the lens end of an endoscope (the front end of the lens is a distance from the front end of the transparent cap and is used as a tissue accommodating space), an anastomotic clip is generally arranged outside the transparent cap, a tissue pulling clamp penetrates through an endoscope forceps channel, firstly, a tissue near a target wound is pulled, the tissue of the target wound is pulled into the transparent cap, then the anastomotic clip is released to perform clamping hemostasis, and at the moment, the tissue pulling clamp can be loosened and withdrawn from an endoscope forceps channel hole.

In the prior art, a medical tissue forceps such as that disclosed in CN209422036U, the head ends of the forceps head arms 12a and 12b are provided with two tines, and in the closed state, the two tines are substantially perpendicular to the central base 11, as can be seen from the figures. In actual operation, the sharp teeth arranged in this way can not effectively lift human tissues, because the human digestive tract tissues have certain fluidity and tissue fluid leads to lubrication of the surfaces of the human digestive tract tissues, when the forceps head arms of the medical tissue forceps enter through the forceps channel holes of the endoscope are opened relative to the base to hook the human tissues, the sharp teeth perpendicular to the base can not effectively clamp the tissues, the human tissues are easy to slip, the operator needs to repeatedly operate for a plurality of times, the operation time is prolonged, and the pain and risk of patients are increased.

Disclosure of Invention

The utility model aims to provide a clamp head assembly and double-arm clamp applying the same, which can solve the technical problem that target tissues are easy to slip in the prior art.

The scheme of the utility model is realized as follows:

the utility model provides a binding clip subassembly, including the pincers headstock and respectively can be relative pincers head frame first arm lock and second arm lock of independent swing, wherein, first arm lock and second arm lock constitute by the front end and the arm body that is connected with the front end, and the front end of first arm lock and second arm lock is single tooth structure, and single tooth structure extends towards the proximal end of the arm body from the distal end of arm body to be arranged at the acute angle between single tooth structure and the arm body; the pliers head frame comprises a head end and a main body part which are connected with each other, a first through hole and a second through hole are arranged on each arm body in a staggered mode, the two arm bodies are arranged on the pliers head frame through the connecting piece penetrating through the two first through holes, the two second through holes are used for connecting traction pieces, and the traction pieces are operated to enable the corresponding connecting arm bodies to swing around the first through holes relative to the pliers head frame.

Further, the head end of the jaw frame is connected with the main body through the sheet-shaped body, the first clamping arm and the second clamping arm are respectively located on one side of two surfaces of the sheet-shaped body, the head end extends outwards from the far end of the sheet-shaped body, the top surface of the head end is of a convex type, the top surface of the head end corresponds to a single-tooth structure, and containing grooves penetrating through the top surface are respectively formed in the longitudinal axial direction of the sheet-shaped body.

Further, the arm body comprises a clamping section, a first connecting section and a second connecting section which are connected in sequence, the first through hole is positioned on the first connecting section, the second through hole is positioned on the second connecting section, and the far end of the clamping section is the far end of the arm body.

Further, the connecting piece is a pin, the main body part is laterally provided with a through groove which penetrates through, and the proximal end of the arm body is controlled by the traction piece to enter the through groove or leave the through groove.

Further, barbs are further arranged on the surfaces of the two sides of the sheet body with the larger area, fixed ends of the barbs are located on the surface of the sheet body, and free ends of the barbs extend from the fixed ends of the barbs towards the main body.

Further, the clamping section is provided with a hollowed-out area.

According to another aspect of the present utility model there is also provided a dual arm pliers comprising a handle assembly and a jaw assembly connected to the handle assembly, wherein the jaw assembly is any one of the preceding.

According to the clamp head assembly and the double-arm clamp using the same, the first clamp arm and the second clamp arm are both composed of the front end and the arm body connected with the front end, the front ends of the first clamp arm and the second clamp arm are of a single-tooth structure, the single-tooth structure extends from the distal end of the arm body towards the proximal end of the arm body, and the single-tooth structure and the arm body are arranged at an acute angle; the pliers head frame comprises a head end and a main body part which are connected with each other, a first through hole and a second through hole are arranged on each arm body in a staggered mode, the two arm bodies are arranged on the pliers head frame through the connecting piece penetrating through the two first through holes, the two second through holes are used for connecting traction pieces, and the traction pieces are operated to enable the corresponding connecting arm bodies to swing around the first through holes relative to the pliers head frame. When the front end of the double-tooth or multi-tooth structure in the prior art is abutted to the surface of the target pathological tissue, the teeth form surface contact with the target pathological tissue due to the fact that the number of teeth is large, tissue in the human body is provided with tissue liquid, slipping is easy, the hooking tissue is easy to fail, and the front end of the clamp arm is provided with the single-tooth structure and is arranged at an acute angle with the arm body, so that the front end of the single-tooth structure is in point contact when the clamp arm hooks the target tissue, the hooked tissue is more convenient and rapid, and the hooked tissue is not easy to slip due to the arrangement of the acute angle.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic front view of a pliers head assembly of the present utility model;

fig. 2 is a schematic perspective view of a jaw frame according to the present utility model;

FIG. 3 is a schematic front view of the structure of the jaw frame of the present utility model;

FIG. 4 is a schematic perspective view of a first arm according to the present utility model;

FIG. 5 is a schematic front view of the first arm according to the present utility model;

FIG. 6 is a schematic view of a single arm of the dual arm pliers of the present utility model pulling tissue;

fig. 7 is a schematic view showing a state that the double-arm forceps of the present utility model pull tissue at two arms.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. The terms distal and proximal in this embodiment refer to the instrument relative to the operator. The far end is far from the operator, while the near end is near.

Referring to fig. 1-5, the present embodiment provides a binding clip assembly 100, wherein the binding clip assembly 100 includes a jaw 102 and a first arm 101A and a second arm 102B that are respectively capable of swinging independently relative to the jaw 102, wherein the first arm 101A and the second arm 101B are each formed by a front end and an arm body connected to the front end, the front ends of the first arm 101A and the second arm 101B are each of a single tooth structure, and referring to fig. 4 and 5, the single tooth structure on the front end 1011A of the first arm 101A extends from the distal end of the arm body 1012A toward the proximal end of the arm body 1012A, like bending inwards, and the single tooth structure and the arm body 1012A are disposed at an acute angle, and the angle range of the acute angle α is selected to be 30 ° to 85 °, preferably 80 °, so that the tissue can be easily hooked without causing dislocation during closing.

Referring to fig. 1 to 3, the clip head frame 102 includes a head end 1021 and a main body 1022 which are connected to each other, and each arm body is provided with a first through hole and a second through hole in a staggered manner, for example, referring to fig. 4, an arm body 1012A of the first clip arm 101A is provided with a first through hole 1013A and a second through hole 1014A, the arm body 1012A includes a clip section, a first connection section and a second connection section which are sequentially connected, the first through hole 1013A is located on the first connection section, the second through hole 1014A is located on the second connection section, a distal end of the clip section is a distal end of the arm body 1012A, on the other hand, human tissue is softer, and two clip arms inevitably run out in the process of being clipped, for this reason, the clip section of this embodiment is provided with a hollowed-out area 1015A.

Referring to fig. 1 and 2, two arms are provided on the jaw frame 102 by the connecting member 103 through two first through holes, two second through holes for connecting the pulling member 201, and the pulling member 201 is operated to swing the corresponding connecting arms about the first through holes with respect to the jaw frame 102. The connector 103 may be a pin, with the body 1022 defining a through slot 10221 laterally therethrough, and the proximal end of the arm being maneuvered into and out of the through slot 10221 by the retractor 201. When the proximal end of the arm is manipulated into the channel 10221, the arm and the jaw frame 102 are in a relatively closed position, which is typically the condition in which tissue grasping is completed. When the proximal end of the arm is moved out of the slot 10221, the arm and the jaw frame 102 are opened relative to each other, which is usually the case when the angle is adjusted to grasp tissue.

Referring to fig. 2 and 3, the head end 1021 of the jaw frame 102 is connected to the main body 1022 through the sheet 1023, the first clamping arm 101A and the second clamping arm 101B are respectively located on two sides of the larger surface of the sheet 1023, the head end 1021 extends outwards from the distal end of the sheet 1023, the top surface is convex, and the top surface of the head end 1021 corresponds to a single tooth structure, the top surface of the head end 1021 is convex, that is, the end surface vertex of the head end 1021 is arranged far more distally than the end surface edge, and after the head end 1021 abuts against the target tissue, a part of the target tissue can be hooked by the edge of the head end 1021, which is beneficial to reliably grasping the tissue. On the other hand, receiving grooves 10211 penetrating the top surface are respectively formed along the longitudinal axial direction of the sheet 1023. When the traction member 201 is operated to swing the corresponding connecting arm body relative to the jaw frame 102, after the arm body approaches the jaw frame 102, the single tooth structure on the arm body can be fully or partially accommodated in the accommodating groove 10211 so as to reliably clamp the target tissue.

Referring to fig. 3, the sheet 1023 is further provided with barbs 10231 on both side surfaces having a larger area, the fixed ends 102311 of the barbs 10231 are located on the surface of the sheet 1023, and the free ends 102312 of the barbs 10231 extend from the fixed ends 102312 of the barbs 10231 toward the main body 1022. In brief, the barbs 10231 are oriented in a direction that is consistent with the direction of withdrawal of the clip assembly 100 from the jaws of the endoscope.

According to another aspect of the present utility model, there is also provided a dual-arm pliers including a handle assembly 200 and a binding clip assembly coupled to the handle assembly 200, wherein the binding clip assembly is the binding clip assembly 100 of the previous embodiment. As described above, the traction member 201 may be steel wires, and two, specifically, two steel wires are correspondingly provided on the traction member 201 to draw the first clamping arm 101A and the second clamping arm 101B, so that the two clamping arms can independently lift the tissue.

In summary, according to the pliers head assembly and the dual-arm pliers using the same provided in the present embodiment, the first clamping arm 101A and the second clamping arm 101B are both composed of a front end and an arm body connected with the front end, the front ends of the first clamping arm and the second clamping arm are both of a single-tooth structure, the single-tooth structure extends from the distal end of the arm body toward the proximal end of the arm body, and an acute angle is formed between the single-tooth structure and the arm body; the jaw frame 102 includes a head end 1021 and a main body 1022 that are connected to each other, each arm is provided with a first through hole and a second through hole in a staggered manner, the two arms are provided on the jaw frame 102 by passing through the two first through holes through the connecting piece 103, the two second through holes are used for connecting the traction piece 201, and the traction piece 201 is operated to swing the corresponding connecting arm around the first through holes relative to the jaw frame 102. In the prior art, the front ends of the tissue lifting forceps are mainly of double-tooth or multi-tooth structures, when the tissue lifting forceps are abutted to the surface of a target pathological tissue, the teeth are in surface contact with the target pathological tissue due to the fact that the teeth are multiple, tissue liquid is contained in the tissue inside a human body, the tissue is easy to slip, the tissue is easy to hook, and the tissue is difficult to slip due to the fact that the front ends of the forceps head components are provided with the single-tooth structures and are arranged with the arm bodies at acute angles. Referring to fig. 6 and 7, it is apparent that when the arm body with the acute angle and the single tooth structure hooks the target tissue, the tissue is easy to be reliably grasped, and the grasped tissue is not easy to slip from the clamp head assembly 100 by combining with the barb 10231 arranged on the clamp head frame 102, so that after the target tissue is grasped, the redundant target tissue can run out from the hollowed-out area 1015A, and the condition that the grasping tissue fails due to the overlarge target tissue and the stretching deformation of the clamp arm is avoided.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The utility model provides a binding clip subassembly, includes the pincers headstock and respectively can be relative the independent wobbling first arm lock of binding clip frame and second arm lock, its characterized in that: the first clamping arm and the second clamping arm are both composed of a front end and an arm body connected with the front end, the front ends of the first clamping arm and the second clamping arm are of single-tooth structures, the single-tooth structures extend from the distal end of the arm body towards the proximal end of the arm body, and the single-tooth structures and the arm body are arranged at an acute angle; the pliers head frame comprises a head end and a main body part which are connected with each other, a first through hole and a second through hole are arranged on each arm body in a staggered mode, the two arms are arranged on the pliers head frame through connecting pieces penetrating through the two first through holes, the two second through holes are used for connecting traction pieces, and the traction pieces are operated to enable the arms to correspondingly connect to swing around the first through holes relative to the pliers head frame.

2. The clamp head assembly according to claim 1, wherein the head end and the main body of the clamp head frame are connected through a sheet-shaped body, the first clamp arm and the second clamp arm are respectively located at two sides of the larger-area surface of the sheet-shaped body, the head end extends outwards from the far end of the sheet-shaped body, the top surface of the head end is convex, the top surface of the head end corresponds to the single-tooth structure, and containing grooves penetrating through the top surface are respectively formed along the longitudinal axial direction of the sheet-shaped body.

3. The binding clip assembly of claim 2, wherein the arm body includes a gripping section, a first connecting section and a second connecting section connected in sequence, the first through hole being located on the first connecting section, the second through hole being located on the second connecting section, the distal end of the gripping section being the distal end of the arm body.

4. A binding clip assembly as defined in claim 2, wherein said connector is a pin, said body portion being laterally slotted with a through slot therethrough, said proximal end of said arm being maneuvered into or out of said through slot by said retractor.

5. A binding clip assembly according to claim 3 wherein the sheet is further provided with barbs on both side surfaces of the greater area, the fixed ends of the barbs being located on the surface of the sheet, the free ends of the barbs extending from the fixed ends of the barbs towards the body portion.

6. A binding clip assembly as defined in claim 3, wherein said gripping section is provided with a hollowed-out area.

7. A dual arm pliers comprising a handle assembly and a jaw assembly connected to the handle assembly, wherein the jaw assembly is a jaw assembly as claimed in any one of claims 1 to 6.