CN104382622A - Arc needle holding forceps that resets - Google Patents

Abstract

The invention relates to an arc-shaped reset needle-holding forceps, which comprises a fixed forceps head, a movable forceps head, a sleeve, a front handle and a rear handle, wherein the front ends of the rear handle and the front handle are connected with a forceps rod seat, a pull rod seat is arranged in the forceps rod seat, two ends of the pull rod seat are sleeved with a spring seat and a nut, and a spring is sleeved on the pull rod seat; the rear handle is connected with one end of the pull rod seat, the other end of the pull rod seat is connected with the tail end of the pull rod, the front end of the pull rod is connected with a second connecting piece in a shaft mode, the second connecting piece is connected with the movable tong head in a shaft mode, and the movable tong head is connected with the sleeve in a shaft mode; the fixed tong head is a concave arc surface matched with the convex arc surface, and a group of small teeth are arranged on the concave arc surface; the arc of the small teeth is the same as the diameter of the suture needle. The invention has the beneficial effects that: the invention has simple and reliable structure, has the reset function and can carry out quick suture, and the clamp head can reset to the suture position with the upward needle head under the mutual action of the large arc and the small arc when clamping the needle, thereby reducing the workload of doctors. The clamping is performed through a great arc, and the suture line cannot be damaged.

Description

A needle-holding forceps with circular arc reset

technical field

The invention belongs to the field of medical equipment, and mainly relates to an arc reset needle-holding forceps.

Background technique

The existing needle-holding forceps operated under the laparoscope has a complicated structure, and it is used for holding the needle and clamping the wire by the teeth in the black steel sheet on the forceps head. In practice, when holding the needle with needle holder forceps, the pincer head is clamped at any part of the needle and the needle will not reach the suture position at this position, so the doctor should operate the forceps so that the head of the pliers is clamped at the suture position of the needle , This increases the doctor's work intensity and doctor's skills, the old product can not be sutured in depth, only horizontal suture. In addition, because the head of the pliers is made of black steel, its hardness is very high. If the doctor uses too much force during the process of holding the needle and clamping the thread, the integrity of the needle and thread will be damaged, and it will not be good when the needle passes through the tissue during the suture process. The control or thread is interrupted during the sewing process. This will increase the medical cost of patients.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a circular arc reset needle holder.

The purpose of the present invention is accomplished through the following technical solutions. This arc-returning needle-holding pliers includes a fixed tongs head, a moving tongs head, a sleeve, a front handle and a rear handle. There is a pull rod seat, the two ends of the pull rod seat are fitted with a spring seat and a parallel cap, the spring is set on the pull rod seat and arranged between the spring seat and the parallel cap; the rear handle is connected to one end of the pull rod seat through the first connecting piece, The other end of the pull rod seat is threadedly connected to the end of the pull rod, the pull rod is covered with a sleeve, the front end of the pull rod is connected to the second connecting piece through the second rotating shaft, and the second connecting piece is connected to the moving pliers head through the first rotating shaft. , the moving pliers head is axially connected with the front end of the bushing through a pin shaft; the matching surface of the moving pliers head is a convex arc surface, and the fixed pliers head is a concave arc surface matched with the convex arc surface, and the concave arc surface A set of small teeth matched with suture needles are arranged on the top; the arcs of the convex arc surface and the concave arc surface are the same as the arc of suture, and the arcs of the small teeth are the same as the diameter of the suture needle.

The rear handle is provided with a button and a lock card, and the button and the lock card are axially connected through a connecting rod.

The clamp rod seat is provided with a cleaning joint, and the cleaning joint communicates with the inner cavity of the casing.

The beneficial effects of the present invention are as follows: the present invention has a simple and reliable structure, has a reset function, and achieves fast suturing through the center positioning of the two circular arcs of the head. Any part of the needle will be reset to the needle-up suture position, thereby reducing the doctor's workload. Since the thread clamping is carried out through a large arc, the suture will not be damaged.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the front view structure schematic diagram of movable pliers head and fixed pliers head of the present invention;

Fig. 3 is a three-dimensional structure diagram of the movable tong head and the fixed tong head of the present invention.

Description of reference numerals: fixed pliers head 1, concave arc surface 1-1, moving pliers head 2, convex arc surface 2-1, pull rod 3, casing 4, cleaning joint 5, pliers rod seat 6, front handle 7 , rod seat 8, first connecting piece 9, button 10, connecting rod 11, rear handle 12, lock card 13, rack 14, and cap 15, spring 16, spring seat 17, small tooth 18, pin 19, the first A rotating shaft 20 , a second connecting piece 21 , a second rotating shaft 22 , and a third rotating shaft 23 .

Detailed ways

The present invention will be described in detail below in conjunction with accompanying drawing:

As shown in the figure, this circular arc reset needle holder includes a fixed tongs head 1, a moving tongs head 2, a casing 4, a front handle 7 and a rear handle 12, and the front ends of the rear handle 12 and the front handle 7 are connected by a first The piece 9 is connected with the clamp rod seat 6, and the clamp rod seat 6 is provided with a pull rod seat 8, and the two ends of the pull rod seat 8 are set with a spring seat 17 and a parallel cap 15, and the spring 16 is set on the pull rod seat 8 and arranged on the spring seat 17 and the parallel cap 15; the rear handle 12 is connected to one end of the rod seat 8 through the first connecting piece 9, and the other end of the rod seat 8 is threadedly connected to the end of the rod 3, and the sleeve 4 is set on the rod 3, and the rod The front end of 3 is axially connected to the second connecting piece 21 through the second rotating shaft 22, and the second connecting piece 21 is axially connected to the moving pliers head 2 through the first rotating shaft 20. At the same time, the moving pliers head 2 is connected to the casing 4 through the pin shaft 19 The front end shaft is connected; the matching surface of the movable pliers head 2 is a convex arc surface 2-1, and the fixed pliers head 1 is a concave arc surface 1-1 matched with the convex arc surface 2-1, and the concave arc surface 1-1 is provided with a group of small teeth 18 that cooperate with suture needles. The arcs of the convex arc surface 2-1 and the concave arc surface 1-1 are the same as the arc of the suture, and the arc of the small teeth 18 is the same as the diameter of the suture needle. The rear handle 12 is provided with a button 10 and a lock card 13, the button 10 and the lock card 13 are connected by a connecting rod 11, the front handle 7 is provided with a rack 14, and the lock card 13 and the rack 14 are in a locked state The bottom is a snap-fit connection. The clamp rod seat 6 is provided with a cleaning joint 5, and the cleaning joint 5 communicates with the inner cavity of the casing 4 and can receive water for washing.

Working process: put the suture needle into the small teeth 18 of the fixed pliers head 1, press the rear handle 12 and the front handle 7, the first connecting piece 9 pulls the pull rod 3 to move to the left, drives the movable pliers head 2 to press down, and presses down with the fixed pliers head 2. The pliers head 1 is closed; when it is opened, press the button 10, the lock card 13 and the rack 14 are disengaged, and the pull rod 3 is driven to move to the right, so that the movable pliers head 2 is opened. The hardness of the head material of the arc reset needle holding head is smaller than that of the suture needle, so the shape of the suture needle will not be damaged. The design of the head adopts a combination of large and small arcs, the large arc of the convex arc surface 2-1 and the concave arc surface 1-1 are the same as the arc of suture, and the small arc of the small tooth 18 is the same as the diameter of the suture needle . Through the center positioning of the two arcs of the head, fast suturing is achieved. When the pliers grip the needle, due to the interaction of the large and small arcs, any part of the pincers clamped on the needle will return to the suture position where the needle is facing upwards, thereby reducing the need for doctors. workload. Since the thread clamping is carried out through a large arc, the suture will not be damaged.

The present invention is not limited to the above-mentioned embodiment, no matter any changes are made in its shape or material composition, any structural design provided by the present invention is a deformation of the present invention, and all should be considered within the protection scope of the present invention .

Claims (3)

1. a circular arc reset needle forceps, it is characterized in that: comprise and determine binding clip (1), dynamic binding clip (2), sleeve pipe (4), pull end (7) and rear handle (12), rear handle (12) is connected with claw beam seat (6) by the first brace (9) with the front end of pull end (7), draw-bar seat (8) is provided with in claw beam seat (6), two ends of draw-bar seat (8) be set with spring base (17) with and emit (15), spring (16) be sleeved on draw-bar seat (8) go up and be arranged on spring base (17) and and emit between (15); Rear handle (12) is connected by the first brace (9) one end with draw-bar seat (8), the other end of draw-bar seat (8) is connected with the end thread of pull bar (3), pull bar (3) is set with sleeve pipe (4), the front end of pull bar (3) is coupling by the second rotating shaft (22) and the second brace (21), second brace (21) is coupling by the first rotating shaft (20) and dynamic binding clip (2), meanwhile, dynamic binding clip (2) is coupling by the front end of bearing pin (19) with sleeve pipe (4); The mating surface of described dynamic binding clip (2) is convex arc surface (2-1), determining binding clip (1) is the concaved circular cambered surface (1-1) coordinated with convex arc surface (2-1), concaved circular cambered surface (1-1) has the one group of little tooth (18) coordinated with sewing needle, convex arc surface (2-1) is the same with the radian of stitching with the circular arc of concaved circular cambered surface (1-1), and the circular arc of little tooth (18) is the same with the diameter of sewing needle.

2. circular arc reset needle forceps according to claim 1, it is characterized in that: described rear handle (12) is provided with button (10) and pintle hook lock (13), button (10) and pintle hook lock (13) are coupling by connecting rod (11), pull end (7) is provided with tooth bar (14), pintle hook lock (13) and tooth bar (14) are connected in snap-fit engagement in the locked condition.

3. circular arc reset needle forceps according to claim 1, is characterized in that: described claw beam seat (6) is provided with cleaning joint (5), the intracavity inter-connection of cleaning joint (5) and sleeve pipe (4).