Angle-adjustable clip applier

Abstract

The angle-adjustable clip applier comprises a handle seat, a clip head assembly, a movable handle, a rotating handle, a bent rotating handle, an outer tube, a rotating rod, a rotating ejector rod and a pull rope assembly, the clip head assembly comprises a clip head base and a clip head assembly, the bent rotating handle is coaxially and rotatably installed on the rotating handle, the far end of the rotating rod is hinged to the clip head base, and the outer tube is arranged on the outer tube. The far end of the rotating ejector rod is movably connected with the forceps head base, the near end of the rotating ejector rod is in transmission connection with the bending handle, the far end of the pull rope assembly is connected with the chuck assembly, the near end of the pull rope assembly is in transmission connection with the movable handle, and the movable handle is suitable for driving the chuck assembly to conduct opening and closing actions through the pull rope assembly. The rotating handle is suitable for driving the plier head base to rotate through the rotating rod, and the bending handle is suitable for driving the plier head base to swing through the rotating ejector rod. According to the utility model, the plier head can swing and rotate, more angle adjustment can be realized, the whole structure is simple, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a pair of clip appliers with adjustable angles. Background Art

[0002] Clip appliers are a common type of medical device, usually used in surgical operations. Current clip appliers generally include a clamp handle, a clamp head, an outer tube fixed to the clamp handle, and a push rod disposed in the outer tube, one end of the push rod is connected to the clamp handle, and the other end of the push rod is connected to the clamp head. The clamp handle is used to drive the push rod to move along the outer tube to drive the clamp head to open and close. The outer tube of the clip applier is generally composed of a first sleeve, and the clamp head is installed at one end of the outer tube. Although the clamp head can be opened and closed to achieve the clamping and releasing functions, the installation angle of the clamp head is fixed. In actual use, such as during surgery, the angle of the clamp head cannot be adjusted according to actual needs, which is not conducive to actual use.

[0003] A Chinese invention patent with authorization announcement number CN 113349871 B discloses a clamp with an adjustable angle of the clamp head. An angle adjustment device is added, and the angle of the clamp head is adjusted by turning a crank. However, the overall structure is complex and can only achieve angle adjustment within a plane, but cannot achieve spatial adjustment, and the operation is limited. Therefore, it is necessary to further improve the clamp with this structure. Utility Model Content

[0004] The utility model aims to provide an angle-adjustable clamping forceps to address the deficiencies of the prior art, which can realize both the swing and rotation of the clamp head and more angle adjustments, and has a simple overall structure and is easy to use.

[0005] The technical solution to achieve the purpose of this utility model is:

[0006] A clamping forceps with adjustable angle comprises a handle seat, a clamp head assembly, a movable handle hinged at the lower end of the handle seat, a rotating handle, a bending handle and an outer tube arranged in sequence at the distal end of the handle seat, and a rotating rod, a rotating top rod and a pull rope assembly arranged in the outer tube. The clamp head assembly comprises a clamp head base and a clamp head assembly installed at the distal end of the clamp head base, the bending handle is coaxially rotatably installed on the rotating handle, the distal end of the rotating rod is hinged to the clamp head base, and the proximal end is fixedly connected to the rotating handle, the distal end of the rotating top rod is movably connected to the clamp head base, and the proximal end is transmission-connected to the bending handle, the distal end of the pull rope assembly is connected to the clamp head assembly, and the proximal end is transmission-connected to the movable handle, the movable handle is suitable for driving the clamp head assembly to open and close through the pull rope assembly, the rotating handle is suitable for driving the clamp head base to rotate through the rotating rod, and the bending handle is suitable for driving the clamp head base to swing through the rotating top rod.

[0007] Furthermore, the rotating push rod includes a push rod body which slides axially and is fixedly sleeved on the outside of the rotating rod along the circumferential direction, a push rod seat which is rotatably installed at the proximal end of the push rod body, and a push rod which is fixedly eccentrically installed at the distal end of the push rod body. A connecting pin is provided at the distal end of the push rod, and an eccentric hole corresponding to the connecting pin is provided at the proximal end of the pliers head base, and the connecting pin is inserted in the eccentric hole.

[0008] Furthermore, a spiral groove is provided on the outer circumferential surface of the push rod seat, the bending handle includes a first sleeve and a first knob coaxially rotatably arranged at the proximal end of the first sleeve, the outer tube is fixedly connected to the distal end of the first sleeve, and the inner ring of the first knob is provided with an integrally formed positioning column, and the positioning column is inserted in the spiral groove.

[0009] Furthermore, the rotating handle includes a second sleeve fixedly mounted on the handle base and a second knob coaxially rotatably disposed at the distal end of the second sleeve, the proximal end of the first knob is rotatably disposed on the second sleeve, and the second knob is coaxially fixedly connected to the rotating rod.

[0010] Furthermore, a grid pattern is provided on the surface of the first knob.

[0011] Furthermore, the distal end of the push rod seat is provided with an annular step, the proximal end of the push rod body is provided with an annular step groove matched with the annular step, and the annular step pair is inserted in the annular step groove.

[0012] Furthermore, a convex portion protruding outward is symmetrically provided on the outer circumference of the rotating rod, and a first sliding groove matched with the convex portion and arranged along the axial direction is provided in the shaft hole of the rotating top rod.

[0013] Furthermore, the chuck assembly includes two clips that are hinged on the pliers head base and arranged in a cross shape, and the hinge points of the two clips are preset with torsion springs that abut the clips. The proximal end of the clip is provided with a strip groove, and a drive shaft is connected between the two strip grooves. The pull rope assembly includes a first pull rod and a steel wire rope that are connected to each other, and the distal end of the steel wire rope is connected to the drive shaft. The first pull rod is axially slidable and is transmission-connected to the movable handle.

[0014] Furthermore, the handle base is provided with a second slide groove and a third slide groove extending axially and arranged parallel to the upper and lower sides, a shift rod hinged to the handle base is provided between the second slide groove and the third slide groove, the proximal end of the first pull rod is inserted in the second slide groove, the second pull rod is slidably arranged in the third slide groove, the top of the movable handle is movably inserted in the second pull rod, the shift rod is inclined in the opposite direction to the movable handle and the two ends are movably inserted in the first pull rod and the second pull rod respectively.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] (1) The utility model realizes the basic clamping function by pulling the movable handle, thereby driving the clamp assembly to open and close via the pull rope assembly. On this basis, a rotating handle and a bending handle are added, which respectively drive the entire clamp head base to rotate and swing via the rotating rod and the rotating top rod, thereby realizing more spatial angle adjustment. The overall structure is simple and easy to use.

[0017] (2) The utility model has a rotating push rod that is inserted into the eccentric hole of the pliers head base through a connecting pin to achieve a movable connection, which can not only enable the rotating push rod to drive the pliers head base to rotate, but also ensure that the rotating push rod can be freely extended and retracted without interference.

[0018] (3) The utility model realizes that the push rod seat moves forward and backward while rotating through the cooperation of the positioning column and the spiral groove, thereby driving the push rod body to move forward and backward, thereby promoting the pliers head assembly to swing. The structure is simple and the adjustment accuracy is high. The push rod seat is connected to the push rod body along the circumferential rotation, so that the push rod seat will not rotate when the pliers head seat rotates, avoiding interference with the swing of the pliers head.

[0019] (4) A grid pattern is provided on the first knob of the utility model to improve the surface roughness and facilitate the operator to rotate and adjust.

[0020] (5) The utility model realizes the rotational connection between the push rod seat and the push rod body by means of the annular steps and the annular step grooves that cooperate with each other, and has a simple structure and is easy to assemble.

[0021] (6) The utility model realizes circumferential fixation and axial sliding of the push rod body and the rotary rod through the mutually matching convex part and the first sliding groove.

[0022] (7) The pull rope assembly of the utility model adopts a structure that combines a pull rod and a steel wire rope. Since the steel wire rope has a certain flexibility, it can still pull the drive shaft normally after the clamp head base swings, thereby realizing the closing of the clamp. Conversely, the clamp is reset through the torsion force of the torsion spring, and then the steel wire rope is driven back to its original position through the drive shaft.

[0023] (8) The utility model ingeniously utilizes a lever and two parallel pull rods, so that when the movable handle is gripped, the pull rope assembly is pulled toward the proximal end, thereby changing the transmission direction in the traditional structure, and further realizing the closing of the clamp assembly through the pull rope assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 It is a simplified structural diagram of the utility model;

[0026] Figure 2 for Figure 1 A local enlarged view of point A;

[0027] Figure 3 This is a schematic diagram of the structure of the pliers head assembly of the utility model in a bent state;

[0028] Figure 4 This is a simplified structural diagram of the clamp head assembly of the utility model;

[0029] Figure 5 The utility model is a simplified structural diagram of the rotating handle and the bending handle after assembly.

[0030] The reference numerals in the accompanying drawings are:

[0031] Handle seat 1, pliers head assembly 2, pliers head base 2-1, eccentric hole 2-1-1, chuck assembly 2-2, clip 2-2-1, drive shaft 2-3, movable handle 3, rotating handle 4, second sleeve 4-1, second knob 4-2, bending handle 5, first sleeve 5-1, first knob 5-2, positioning column 5-3, outer tube 6, rotating rod 7, convex portion 7-1, rotating push rod 8, push rod body 8-1, first slide groove 8-1-1, push rod seat 8-2, spiral groove 8-2-1, push rod 8-3, connecting pin 8-4, pull rope assembly 9, first pull rod 9-1, wire rope 9-2, shift rod 10, second pull rod 11. DETAILED DESCRIPTION

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] (Example 1)

[0034] like Figures 1 to 5The angle-adjustable clamping forceps shown in the figure include a handle base 1, a clamp head assembly 2, a movable handle 3, a rotating handle 4, a bending handle 5, an outer tube 6, a rotating rod 7, a rotating top rod 8 and a pull rope assembly 9, wherein the clamp head assembly 2 includes a clamp head base 2-1 and a clamp head assembly 2-2 installed at the distal end of the clamp head base 2-1, the movable handle 3 is hinged at the lower end of the handle base 1, the rotating handle 4, the bending handle 5 and the outer tube 6 are sequentially arranged at the distal end of the handle base 1, the rotating rod 7, the rotating top rod 8 and the pull rope assembly 9 are all arranged in the outer tube 6, and the bending handle 5 is coaxially rotatably installed on the rotating handle 4. The distal end of the pull rope assembly 9 is connected to the clamp head assembly 2-2, and the proximal end is transmission-connected to the movable handle 3, so that the clamp head assembly is driven to open and close through the pull rope assembly 9. The distal end of the rotating rod 7 is hinged to the proximal center of the clamp head base 2-1, and the proximal end is fixedly connected to the rotating handle 4, so that the clamp head base 2-1 is driven to rotate through the rotating rod 7 by rotating the rotating handle 4. The distal end of the rotating top rod 8 is movably connected to the clamp head base 2-1, and the proximal end is transmission-connected to the bending handle 5, so that the clamp head base 2-1 is driven to swing around the rotating rod 7 by rotating the bending handle 5 through the rotating top rod 8. The overall structure is neat, and more spatial angle adjustments can be achieved while realizing the basic clamping function. The overall structure is simple and easy to use.

[0035] Specifically, the clamp assembly 2-2 includes two clamps 2-2-1 that are hinged on the clamp head base 2-1 and arranged in a cross shape. The hinge points of the two clamps 2-2-1 are preset with torsion springs that abut against the clamps 2-2-1, so that the two clamps 2-2-1 can be opened again when the external force driving them to close is removed. The proximal end of the clamp 2-2-1 is provided with a strip groove, and the driving shaft 2-3 is connected between the two strip grooves. The pull rope assembly 9 includes a first pull rod 9-1 and a steel wire rope 9-2 that are connected to each other, and the distal end of the steel wire rope 9-2 is connected to the driving shaft 2-3.

[0036] A second slide groove and a third slide groove extending axially and arranged parallel to each other are arranged in the handle seat 1. A lever 10 hinged to the handle seat 1 is arranged between the second slide groove and the third slide groove. The proximal end of the first pull rod 9-1 is inserted in the second slide groove. A second pull rod 11 is slidably arranged in the third slide groove. The top of the movable handle 3 is movably inserted in the second pull rod 11. The lever 10 is tilted in the opposite direction to the movable handle 3 and its two ends are movably inserted in the first pull rod 9-1 and the second pull rod 11. When the movable handle 3 is pulled, the second pull rod 11 is driven to move toward the distal end, and the second pull rod 11 is driven to move toward the proximal end by the lever 10, thereby pulling the wire rope 9-2, driving the drive shaft 2-3 to make relative movement along the cross-arranged strip grooves, thereby realizing the closing of the two clamps. At the same time, the wire rope 9-2 has a certain flexibility, so after the clamp head assembly swings a certain angle, it can still pull the drive shaft 2-3 to move normally, and will not interfere with the rotation of the clamp head assembly.

[0037] The rotating push rod 8 includes a push rod body 8-1 which slides axially and is fixedly sleeved on the outside of the rotating rod 7 along the circumferential direction, a push rod seat 8-2 which is rotatably installed at the proximal end of the push rod body 8-1, and a push rod 8-3 which is fixedly eccentrically installed at the distal end of the push rod body 8-1. A connecting pin 8-4 is provided at the distal end of the push rod 8-3, and an eccentric hole 2-1-1 corresponding to the connecting pin 8-4 is provided at the proximal end of the pliers head base 2-1. The connecting pin is inserted into the eccentric hole 2-1-1, thereby realizing the movable connection between the rotating push rod 8 and the pliers head base 2-1.

[0038] Specifically, the distal end of the push rod seat 8-2 is provided with an annular step, and the proximal end of the push rod body 8-1 is provided with an annular step groove adapted to the annular step, and the annular step pair is inserted into the annular step groove, thereby realizing circumferential rotation connection and axial fixed connection. The outer peripheral surface of the push rod seat 8-2 is provided with a spiral groove 8-2-1, and the bending handle 5 includes a first sleeve 5-1 and a first knob 5-2 coaxially rotatably arranged at the proximal end of the first sleeve 5-1, and the outer tube 6 is fixedly connected to the distal end of the first sleeve 5-1. The inner ring of the first knob 5-2 is provided with an integrally formed positioning column 5-3, and the positioning column 5-3 is inserted in the spiral groove 8-2-1. When the first knob 5-2 is rotated, the push rod seat 8-2 is driven by the positioning column to move toward the distal end while rotating, thereby pushing the push rod body 8-1 forward, thereby pushing the pliers head base 2-1 to swing around the rotating rod 7 to achieve angle deflection. The surface of the first knob 5-2 is provided with a grid pattern, thereby improving the surface roughness and facilitating the operator's rotation and adjustment.

[0039] The rotating handle 4 includes a second sleeve 4-1 fixedly mounted on the handle base 1 and a second knob 4-2 coaxially rotatably disposed at the distal end of the second sleeve 4-1. The proximal end of the first knob 5-2 is rotatably disposed on the second sleeve 4-1. The second knob 4-2 is coaxially fixedly connected to the rotating rod 7. By rotating the second knob 4-2, the pliers head base 2-1 is driven to rotate through the rotating rod 7, and combined with the deflection of the pliers head base 2-1, spatial angle adjustment is achieved. The outer circumference of the rotating rod 7 is symmetrically provided with a convex portion 7-1 protruding outward, and the axial hole of the push rod body 8-1 is provided with a first slide groove 8-1-1 adapted to the convex portion 7-1 and arranged axially, so as to achieve circumferential fixation and axial sliding of the push rod body 8-1 and the rotating rod 7. When the pliers head base 1 rotates, the cooperation between the protrusion 7-1 and the first slide groove 8-1-1 drives the push rod body to rotate synchronously. At the same time, since the push rod body 8-1 and the push rod seat 8-2 rotate in coordination, the push rod body 8-1 will not move forward and backward, thereby realizing the rotation and swing coordination of the pliers head assembly 2.

[0040] The utility model realizes the basic clamping function by pulling the movable handle, thereby driving the clamp assembly to perform opening and closing movements via the pull rope assembly. On this basis, a rotating handle and a bending handle are added, and the entire clamp head base is driven to perform rotating movements and swing movements via the rotating rod and the rotating top rod respectively, thereby realizing more spatial angle adjustments. The overall structure is simple and easy to use.

[0041] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An angle-adjustable clip applier, characterized in that: The invention comprises a handle seat, a pliers head assembly, a movable handle hinged at the lower end of the handle seat, a rotating handle, a bending handle and an outer tube which are arranged at the distal end of the handle seat in sequence, and a rotating rod, a rotating top rod and a pull rope assembly which are arranged in the outer tube. The pliers head assembly comprises a pliers head base and a clamping head assembly installed at the distal end of the pliers head base. The bending handle is coaxially rotatably installed on the rotating handle, the distal end of the rotating rod is hinged to the pliers head base, and the proximal end is fixedly connected to the rotating handle, the distal end of the rotating top rod is movably connected to the pliers head base, and the proximal end is transmission-connected to the bending handle, the distal end of the pull rope assembly is connected to the clamping head assembly, and the proximal end is transmission-connected to the movable handle, the movable handle is suitable for pulling the clamping head assembly to open and close through the pull rope assembly, the rotating handle is suitable for driving the pliers head base to rotate through the rotating rod, and the bending handle is suitable for driving the pliers head base to swing through the rotating top rod.

2. The angle-adjustable clip applier according to claim 1, characterized in that: The rotating push rod includes a push rod body which slides axially and is fixedly sleeved on the outside of the rotating rod along the circumferential direction, a push rod seat which is rotatably installed at the proximal end of the push rod body, and a push rod which is fixedly eccentrically installed at the distal end of the push rod body. A connecting pin is provided at the distal end of the push rod, and an eccentric hole corresponding to the connecting pin is provided at the proximal end of the pliers head base, and the connecting pin is inserted in the eccentric hole.

3. The angle-adjustable clip applier according to claim 2, characterized in that: The outer circumferential surface of the push rod seat is provided with a spiral groove, the bending handle includes a first sleeve and a first knob coaxially rotatably arranged at the proximal end of the first sleeve, the outer tube is fixedly connected to the distal end of the first sleeve, the inner ring of the first knob is provided with an integrally formed positioning column, and the positioning column is inserted in the spiral groove.

4. The angle-adjustable clip applier according to claim 3, characterized in that: The rotating handle comprises a second sleeve fixedly mounted on the handle seat and a second knob coaxially rotatably arranged at the distal end of the second sleeve, the proximal end of the first knob is rotatably arranged on the second sleeve, and the second knob is coaxially fixedly connected to the rotating rod.

5. The angle-adjustable clip applier according to claim 3, characterized in that: The surface of the first knob is provided with a grid pattern.

6. The angle-adjustable clip applier according to claim 2, characterized in that: The distal end of the push rod seat is provided with an annular step, the proximal end of the push rod body is provided with an annular step groove matched with the annular step, and the annular step pair is inserted in the annular step groove.

7. The angle-adjustable clip applier according to claim 2, characterized in that: The outer circumference of the rotary rod is symmetrically provided with a convex portion protruding outward, and the shaft hole of the rotating top rod is provided with a first sliding groove matched with the convex portion and arranged along the axial direction.

8. The angle-adjustable clip applier according to claim 1, characterized in that: The chuck assembly includes two clips which are hinged on the pliers head base and arranged in a cross shape. The hinge points of the two clips are preset with torsion springs that abut against the clips. The proximal ends of the clips are provided with strip grooves, and a driving shaft is connected between the two strip grooves. The pull rope assembly includes a first pull rod and a steel wire rope which are arranged in connection with each other. The distal end of the steel wire rope is connected to the driving shaft. The first pull rod is arranged to slide axially and is transmission-connected to the movable handle.

9. The angle-adjustable clip applier according to claim 8, characterized in that: The handle base is provided with a second slide groove and a third slide groove extending axially and arranged parallel to the upper and lower sides, a shift rod hinged on the handle base is provided between the second slide groove and the third slide groove, the proximal end of the first pull rod is inserted in the second slide groove, the second pull rod is slidably arranged in the third slide groove, the top of the movable handle is movably inserted in the second pull rod, the shift rod is inclined in the opposite direction to the movable handle and the two ends are movably inserted in the first pull rod and the second pull rod respectively.

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