CN201822950U

CN201822950U - Flexible intrauterine contraceptive device with superelasticity

Info

Publication number: CN201822950U
Application number: CN2010205529184U
Authority: CN
Inventors: 彭琛; 王洁; 欧海波
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-09
Filing date: 2010-10-09
Publication date: 2011-05-11
Anticipated expiration: 2020-10-09

Abstract

The utility model relates to a contraceptive appliance for women, in particular to a flexible intrauterine contraceptive device with superelasticity. Two ends of the upper portion of a V-shaped framework made of shape memory alloy wires are linear, tips of the two ends of the upper portion of the V-shaped framework are adhered and solidified into hard round heads via high polymer materials, soft layers are then wrapped outside the tips, and silicon rubber hoses containing contraceptive drugs are bunched on two side arms of the V-shaped framework. The intrauterine contraceptive device not only avoids biological toxicity of copper of existing like products, is fine in contraception effect, has superelasticity and flexibility, is simple in structure and optimized in process, and greatly reduces manufacturing cost.

Description

The flexible birth control apparatus of a kind of super-elasticity

Technical field

This utility model relates to a kind of lady's pastille contraceptive device, particularly a kind of flexible birth control apparatus of super-elasticity that improves design.

Background technology

China and the ideal intrauterine device of third world countries' wilderness demand, however existing product is all undesirable, comprises imported product.Subject matter shows: the first is utilized heavy metal ion more, kills smart ovum as the bio-toxicity of copper ion, but it swashs the uterus spinosity and produces some kinds of side effect; Its two be adopt rigidity and (or) semi-rigid material, directly use as copper, plastics, rustless steel and marmem etc., though they have destroyed the implantation environment of germ cell, but it is in the process of relaxing is contracted in the uterus, easily the tenderer uterine cavity mucosa in surface is produced friction, impaired and inflammation, bring out other disease; It three is to reduce elasticity to have reduced scratch, but is easy to come off.It four is integrities that product lacks serviceability, as what, the quality of elastic size, biocompatibility etc. of weight, makes preferably side effect such as contraceptive effect and hemorrhage, inflammation, lumbago, decylization often and deposit.

(patent No. is patent " flexibility surpasses the bullet birth control apparatus and send and get device ": 200320112885.1) to solving above-mentioned hard and soft contradiction and contraceptive effect very big propelling is arranged, really rare, but the end structure of its shape-memory alloy wire V-arrangement skeleton and forming technology complexity, it is asymmetric that the periphery kiss-coating of V-arrangement skeleton and the shaping of silicone rubber column cock body are prone to size.

Summary of the invention

This utility model provides a kind of super-elasticity flexible birth control apparatus, its objective is in order to keep the advantage of patent " flexibility surpasses the bullet birth control apparatus and send and get device " at aspect of performance, overcome the deficiency on its manufacturing process, and increase and contain contraceptive, make it to be easy to make, reduce cost, increase effect, promote to use and promote.

Above-mentioned purpose of the present utility model is achieved through the following technical solutions, and accompanying drawings is as follows.

The flexible birth control apparatus of a kind of super-elasticity, has the V-arrangement skeleton made from shape-memory alloy wire 1, the both upper ends thereof of described V-arrangement skeleton 1 is linearly, with macromolecular material its bonding is frozen into hard termination 3, hard termination appearance is coated with soft layer 4, and the two side arms of V-arrangement skeleton 1 is with the macromolecular material flexible pipe 2 that contains contraceptive.

Described hard termination 3 is circle or spindle.

Described soft layer 4 is the uniform flexible protective film of thickness.

The described tube wall that contains the macromolecular material flexible pipe 2 of contraceptive is the flexible protective layer with medicine controlled releasing layer.

This utility model advantage is as follows:

The first, simple in structure, process optimization reduces cost, and is easy to make.The second, the bio-toxicity method contraception of cancellation copper material is good for one's health.Three, hard and soft in conjunction with perfect, efficiently solve " just " easily rub inflammation and elastic difficult problem of " soften " meeting reduction.Four, good stability, difficult drop-off.Five, in light weight, good springiness, relaxing and contract in the adaptation uterus, does not have tenesmus stomachache and feel.Six, birth control apparatus contacts with the palace wall is flexible, and no local damage pressure is difficult for inflammation.Seven, crooked millions of inferior not tired yet, long service life.Eight, fetch and deliver conveniently, need not expand palace or need not bigger expansion palace, reduced the pain of user.

Description of drawings

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

Among the figure: 4. soft layers of 1.V shape skeleton 2. macromolecular material flexible pipes 3. hard terminations

The specific embodiment

Below the embodiment that provides with regard to accompanying drawing this utility model structure is described in further detail.

The flexible birth control apparatus of a kind of super-elasticity is made V-arrangement skeleton 1 with the shape-memory alloy wire with superelastic properties, and the both upper ends thereof of described skeleton 1 is not to adopt intrinsic curvilinear structures, but linearly, in the hope of improving moulding process.Then, its two ends bonding is frozen into hard termination 3, is used for guaranteeing its safety human body with macromolecular material.Simultaneously, 3 appearances coat soft layer 4 again in the hard termination, so that increase its flexible protective effect.To the two side arms of V-arrangement skeleton 1, the cover string has the macromolecular material flexible pipe 2 that contains contraceptive, and its tube wall is as flexible protective layer and medicine controlled releasing layer.

With reference to Fig. 1, a kind of super-elasticity and the flexible birth control apparatus that has both, adopting diameter is the V-arrangement skeleton 1 that the niti-shaped memorial alloy silk of 0.2-0.5mm is made, it is tapered that the lower end that it is characterized in that it is the round end of rounding off, its both upper ends thereof is not to adopt intrinsic curvilinear structures, but linearly.The birth control apparatus height H is that 20-35mm, width w are 30-45mm, and two arm angle β are 15 °-30 °, and angle of splay α is 120 °-170 ° between two arms, and rounding off radius of curvature R 1 is 1-3mm for 10-20mm, R2; The high-temperature phase-change point of design shape memory alloy wire is 33 ℃, and the low temperature phase change point is 15 ℃.Be shaped by mould is fixing then, and finalize the design and the shape memory heat treatment, obtain having super-elasticity and the suitable shape-memory alloy wire skeleton 1 of serviceability.

For two straight line terminations of above-mentioned skeleton 1 with the molding of shape-memory alloy wire institute, with epoxy bond and be frozen into hard termination 3; Silicon rubber hose 2 cover that reuse contains contraceptives such as levonorgestrel, gestodene is through two side arms and hard termination 3, the lower end reserve h not poling help menses and pass through smoothly; At last, hot compression molding is carried out in the termination that is enclosed within pastille silicon rubber hose 2 on the hard termination 3 outward, also available silicon rubber, polyurethane etc. wait through hot moulding, dipping or spraying and finish soft layer 4 these last manufacturing procedures.

Claims

1. the flexible birth control apparatus of a super-elasticity, has the V-arrangement skeleton made from shape-memory alloy wire (1), it is characterized in that, the both upper ends thereof of described V-arrangement skeleton (1) is linearly, with macromolecular material its bonding is frozen into hard termination (3), hard termination appearance is coated with soft layer (4), and the two side arms of V-arrangement skeleton (1) is with the macromolecular material flexible pipe (2) that contains contraceptive.

2. according to the flexible birth control apparatus of the described super-elasticity of claim 1, it is characterized in that described hard termination (3) is circle or spindle.

3. according to the flexible birth control apparatus of the described super-elasticity of claim 1, it is characterized in that described soft layer (4) is the uniform flexible protective film of thickness.

4. according to the flexible birth control apparatus of the described super-elasticity of claim 1, it is characterized in that the described tube wall that contains the macromolecular material flexible pipe (2) of contraceptive is the flexible protective layer with medicine controlled releasing layer.