CN203290961U

CN203290961U - Anti-unwinding spring ring

Info

Publication number: CN203290961U
Application number: CN2013203093244U
Authority: CN
Inventors: 田立剑; 俞华沣; 权宜中
Original assignee: WEIHAI VISEE MEDICAL DEVICES CO Ltd
Current assignee: WEIHAI VISEE MEDICAL DEVICES CO Ltd
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2013-11-20
Anticipated expiration: 2023-05-31

Abstract

The utility model relates to the technical field of medical instruments, in particular to an anti-unwinding spring ring. The anti-unwinding spring ring is provided with a spring ring body. After a memory alloy wire is wound into a primary spring, the primary spring is wound in a spiral mode in the axial direction to form the secondary spring ring, and then the spring ring body is formed. The anti-unwinding spring ring is characterized in that a setting wire is arranged in the primary spring, and the two ends of the setting wire are fixedly connected with the head end and the tail end of the primary spring to form the anti-unwinding spring ring, so that the spring ring is prevented from being pulled straight under the action of external force and the function of unwinding prevention is achieved. Due to the fact that the structure is adopted, the anti-unwinding spring ring has the advantages of being simple in structure, convenient to manufacture, capable of avoiding medical accidents and keeping the memory shape under the action of any external force, and the like.

Description

The anti-turn that untwists

Technical field

This utility model relates to technical field of medical instruments, specifically a kind of anti-turn that untwists.

Background technology

Medically, described aneurysm be on tremulous pulse is grown for various reasons and the anomalous structure that forms, its tumor wall is compared with normal blood vessels, and very large defect is arranged, when blood pressure raise suddenly or the situation such as arteriosclerosis under, aneurysm can be broken, and causes fatal hemorrhage.

clinically, treat for the mode that aneurysmal patient adopts turn to clog aneurysm usually, described turn is after being beneficial to memory alloy wire and being coiled into the one-level spring, again by the one-level spring two-level spring circle that forms of spiral winding vertically, it is cylindrical that the two-level spring circle has, have coning, the one-tenth 3 D complex type that also has, during intervene operation, under the X-line monitors, after by microtubular, turn being imported to aneurysm, need slowly and gently with the aneurysm filling fully, pass into again electric current, turn and the turn in tumor that aneurysm is outer disconnect, embolus will forever stay in the body, therefore aneurysm also reaches and dissects the purpose of curing, its deficiency is: this turn is in the process of interventional therapy, easily will remember the helical coil that forms stretching, cause the turn after stretching to be free in parent artery, secondary thrombus very easily.

Summary of the invention

The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, easy to make, avoid malpractice, can keep the anti-turn that untwists of shape memory under any External Force Acting.

The technical scheme that its technical problem that solves this utility model adopts is:

A kind of anti-turn that untwists, be provided with turn, turn is after utilizing memory alloy wire to be coiled into the one-level spring, again by one-level spring spiral winding and form the two-level spring circle vertically, it is characterized in that in the one-level spring being provided with the typing line, typing line two ends are formed by fixedly connecting with one-level spring head and the tail two ends respectively, to avoid turn, are straightened under external force, reach anti-effect of untwisting.

This utility model is owing to adopting said structure, have simple in structure, easy to make, avoid malpractice, can keep the advantage such as shape memory under any External Force Acting.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Reference numeral: turn 1, typing line 2, one-level spring 3.

The specific embodiment

Below in conjunction with accompanying drawing, this utility model is further illustrated:

As shown in drawings, a kind of anti-turn that untwists, be provided with turn 1, turn 1 is after utilizing memory alloy wire to be coiled into one-level spring 3,, by one-level spring 3 spiral winding and form two-level spring circle 1 vertically, it is characterized in that in one-level spring 3 being provided with typing line 2 again, typing line 2 two ends are formed by fixedly connecting with one-level spring 3 head and the tail two ends respectively,, to avoid turn 1 to be straightened under external force, reach anti-effect of untwisting.

During intervene operation, under the X-line monitors, after by microtubular, turn 1 being imported to aneurysm, turn 1 disconnects under external force, in the process that disconnects,, due to the position constraint of turn 1 head and the tail through typing line 2, avoided turn 1 untwisting in aneurysm, reach the effect of using safety to avoid malpractice, typing line 2 described in the utility model can adopt medical nylon material to make.

Claims

1. one kind resists the turn that untwists, be provided with turn, turn is after being coiled into the one-level spring by memory alloy wire, again by one-level spring spiral winding and form the two-level spring circle vertically, it is characterized in that in the one-level spring being provided with the typing line, typing line two ends are formed by fixedly connecting with one-level spring head and the tail two ends respectively.