CN204995520U - Great saphenous vein strips off auto -lock dop device of pipe - Google Patents

Abstract

The utility model discloses a self-locking chuck device for a great saphenous vein stripping catheter, which comprises a chuck nut and a self-locking screw. The top of the self-locking screw is provided with a blocking part, and the outer middle part is provided with a self-locking thread. The lower end is provided with a tapered guide piece, and the inner side is provided with a longitudinal assembly groove; the inner middle part of the chuck nut is provided with a longitudinal internal thread matching with the self-locking screw, the inner lower end is provided with a tapered groove, and the bottom is provided with a self-locking screw. A circular hole concentric with the longitudinal assembly groove, the circular hole communicates with the tapered groove. The utility model has a simple structure. The arc chuck nut body and the self-locking screw are used to fix the blood vessel and the stripped head, which replaces the traditional surgical thread used to fix the blood vessel and the stripped head. time and reduce the suffering of patients.

Description

A self-locking chuck device for the great saphenous vein stripping catheter

technical field

The utility model relates to a small medical auxiliary device, in particular to a self-locking chuck device for a great saphenous vein stripping catheter.

Background technique

At present, in the clinical treatment of saphenous varicose veins, the commonly used surgical therapy is to ligate the varicose veins and completely strip them. The traditional surgical method is to remove the varicose veins through multiple incisions from the root of the thigh to the inner part of the calf. It has the disadvantages of large trauma, more pain for patients, long hospital stay, many scars, and poor cosmetic effect. Disposable vein stripping devices currently on the market do not have a special anti-self-locking design for their clips, so the operation is cumbersome during use, and the success rate of one-time stripping is low, resulting in the phenomenon that the stripped blood vessels are pulled off. Doctors It is necessary to make an incision again at the part of the extraction for stripping, which will easily cause damage to the surrounding tissues and nerves, increase the pain of the patient, and prolong the operation time.

Therefore, it has important practical significance and good application prospect to develop and develop accurate and efficient venous chuck device.

Contents of the invention

The purpose of the invention of the utility model is to provide a great saphenous vein stripping self-locking chuck device with simple structure and capable of quickly fixing the blood vessel and the stripping head.

In order to achieve the purpose of the above invention, the technical solution adopted by the utility model is: a self-locking chuck device for a saphenous vein stripping catheter, including a chuck nut and a self-locking screw, and the top of the self-locking screw is provided with a blocking part , the middle part of the outside is provided with a self-locking thread, the lower end is provided with a tapered guide plate, and the inner side is provided with a longitudinal assembly groove; The taper groove has a round hole concentric with the longitudinal assembly groove of the self-locking screw at the bottom, and the round hole communicates with the taper groove.

In the above technical solution, the outer surface of the chuck nut and the upper end of the self-locking screw are designed in a smooth manner without sharp edges.

In the above technical solution, the chuck nut is bullet-shaped, streamlined, conical, spherical or cylindrical.

In the above technical solution, the clamping portion of the longitudinal assembly groove is a symmetrical plane, groove shape, U shape or V shape.

In a further technical solution, the clip nut and the self-locking screw are movably connected to the traction rope joint.

The material of the self-locking chuck device of the present utility model can be stainless steel, nylon, polypropylene, polyethylene, styrene-acrylonitrile-butadiene block copolymer, polycarbonate, acrylic or polyethylene terephthalate Alcohol esters.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art:

1. The utility model has a simple structure, uses arc chuck nut body and self-locking screw to fix the blood vessel and the exfoliated head, replaces the traditional surgical thread used to fix the blood vessel and the exfoliated head, and can effectively improve the working efficiency and reduce the number of operations. time and reduce the suffering of patients.

2. Through the design of the self-locking chuck, the utility model allows the traction rope to pass through the blood vessel, increases the device's passing performance, and minimizes the damage to the intima of the blood vessel and the surrounding tissue of the stripped blood vessel, and can effectively prevent the chucking during the stripping of the blood vessel. of falling off.

Description of drawings

Fig. 1 is the overall assembly schematic diagram of the utility model in the first embodiment.

Fig. 2 is a schematic structural view of the self-locking screw of the present invention in the first embodiment.

Fig. 3 is a schematic structural view of the clamp nut of the present invention in the first embodiment.

Fig. 4 is a schematic side view of the chuck nut of the present invention in the first embodiment.

Fig. 5 is a schematic diagram of the application process of the utility model in the first embodiment.

Among them: 1. Self-locking screw; 2. Chuck nut; 3. Longitudinal assembly groove; 4. Self-locking thread; 5. Guide piece; 6. Round hole; 7. Internal thread; 8. Taper groove; 9. Joint ; 10, cable; 11, handle.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment 1: Referring to Figures 1 to 4, a self-locking chuck device for a saphenous vein stripping catheter includes a chuck nut 2 and a self-locking screw 1, and the top of the self-locking screw is provided with a blocking part. There is a self-locking thread 4 in the middle part of the outer side, a tapered guide piece 5 is provided at the lower end, and a longitudinal assembly groove 3 is provided on the inner side; a longitudinal internal thread 7 matched with the self-locking screw is provided at the middle part of the inner side of the chuck nut, and a longitudinal internal thread 7 is provided on the inner side. The lower end is provided with a tapered groove 8, and the bottom is provided with a circular hole 6 concentric with the longitudinal assembly groove of the self-locking screw, and the circular hole communicates with the tapered groove.

The outer surface of the chuck nut and the upper end of the self-locking screw are designed in a smooth manner without sharp edges.

The chuck nut of the utility model has different specifications, and the chuck nut with a cross-sectional diameter of 5-20 mm can be selected according to the patient's blood vessel diameter.

Referring to Fig. 5, when the utility model is in use, the joint 9 of the cable 10 is inserted into the great saphenous vein, enters the main vein retrogradely, and passes through the wound of the obstructed part. Install the self-locking screw on the cable covered with blood vessels, and install the chuck nut on the self-locking screw to fix the venous blood vessel and the self-locking chuck device, and then fix the handle 11 on the other end of the cable to cooperate with the joint , pull out the cable with force to pull out the blood vessel and the self-locking chuck device together, and then the auxiliary great saphenous vein stripping can be completed.

Claims (5)

1. a great saphenous vein strips off the self-locking card head unit of conduit, it is characterized in that: comprise dop nut and Self-locking screw, described Self-locking screw top is provided with jam position, and middle part, outside is provided with self-locking thread, lower end is provided with tapering prerotation vane, and inner side is provided with longitudinal fitting recess;

Inside described dop nut, middle part is provided with the longitudinal inner thread matched with Self-locking screw, and inside lower end is provided with taper groove, and bottom is provided with the circular hole concentric with longitudinal fitting recess of Self-locking screw, and described circular hole communicates with taper groove.

2. a kind of great saphenous vein according to claim 1 strips off the self-locking card head unit of conduit, it is characterized in that: described dop nut outer surface and Self-locking screw upper end are round and smooth design, do not have sharp keen edge.

3. a kind of great saphenous vein according to claim 1 strips off the self-locking card head unit of conduit, it is characterized in that: described dop nut is that bullet-shaped is streamlined, taper, spherical or cylindrical.

4. a kind of great saphenous vein according to claim 1 strips off the self-locking card head unit of conduit, it is characterized in that: the clamping part of described longitudinal fitting recess is symmetrical plane, grooved, U-shaped or V-type.

5. a kind of great saphenous vein according to claim 1 strips off the self-locking card head unit of conduit, it is characterized in that: described dop nut and Self-locking screw are movably attached to pull rope joint.