CN2529622Y - Internal filter of vas deferens - Google Patents
Internal filter of vas deferens Download PDFInfo
- Publication number
- CN2529622Y CN2529622Y CN 02202940 CN02202940U CN2529622Y CN 2529622 Y CN2529622 Y CN 2529622Y CN 02202940 CN02202940 CN 02202940 CN 02202940 U CN02202940 U CN 02202940U CN 2529622 Y CN2529622 Y CN 2529622Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- vas deferens
- birth control
- device body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Materials For Medical Uses (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The utility model relates to an internal filter of vas deferens, which is made of medical use polyurethane or silicon rubber. The one end of the device is a bullet shape; and once being put in a spermaduct, the utility model has sperm blocking and damaging function. The device is a reasonable improvement of prior art, which not only has well birth control effect, but also can effectively prevent the device from moving in the spermaduct. The utility model is a practical male birth control tool in the family planning field; moreover, the utility model is simple in structure, low in cost and suitable to be expanded.
Description
One, technical field
This utility model belongs to the family planning field, and relating in particular to a kind of is the deferent duct birth control device that material is made with polyurethane or silicone rubber.
Two, background technology
Family planning is China's fundamental state policy, also is world trend from now on, and the development of male's family planning utensil is the important topic of family planning research.
The vas deferens sterilization art is still the topmost method of male contraception at present, and it is simple and easy to do, and is safe and reliable, extensively adopts in many countries.In China, the application of vas deferens sterilization art still accounts for 11% of whole birth-control measures, is lower than tybo sterilization (40%).Its reason, except that traditional view and social factor influence, the concurrent epididymis stasis of vas deferens sterilization postoperative and lead to problems such as postoperative superfoetation rate is low more also influences the popularization of vas deferens sterilization art.For addressing the above problem, the deferent duct device has been carried out big quantity research both at home and abroad over more than 30 year.From the later stage sixties so far, according to incompletely statistics, Korea S, the U.S., India etc. have successively designed in more than the 20 kind of deferent duct device.Device can be divided into obstruction and non-obstruction two classes basically, Brodie recoverability deferent duct intracavitary unit as the Derrick1974 design, blocking device in the Riod recoverability deferent duct of Free1975 design, 1979, the sperm controller of designs such as Brueschke etc. all is that macromolecular material is made, and its principle all is the purpose that the ponding of use device reaches birth control.Unplugged device by the copper gauze of U.S. Kreamer design and J.Hulka with the defecator of putting the Teflon velvet in the polypropylene tube.But above-mentioned research all fails to continue.
China begins the seventies, in non-obstruction deferent duct, do a lot aspect the device research, especially Hospital Attached to Hubei Medical College, it is that conduit is the spermatic duct filter device (number of patent application is 90217709.5) that filters obturator with medical nylon hair with the polypropylene that people such as ZhanBing Yan had once designed, obtain certain effect, but have following shortcoming:
(1) polypropylene conduit flexibility is not enough, is unsuitable for putting into deferent duct;
(2) this apparatus structure is level and smooth tubulose, no raised structures, and smooth surface can be shifted in the semen deposition pipeline in addition.
Three, summary of the invention
It is material with polyurethane or silicone rubber that the purpose of this utility model provides a kind of, in addition rationally improved, practical deferent duct birth control device on the structure of existing deferent duct birth control device.
This utility model device selects medical polyurethane material or silicone rubber to make, and device is bullet-headed (referring to Fig. 1) of an opening, whole device by device 1, install body 2, implant 3, fixed station 4 and form.Device 1 is a solid construction, to make than flexible polyurethane or silicone rubber, device body 2 is a hollow tubing conductor, to make than rigid polyurethane, tube-surface place, both ends up and down respectively is provided with annular groove 5, with fixing seam binding usefulness, symmetrical holes 6 (two) is opened in this external device body upper end, so that seminal fluid goes out from orifice flow, device body inside is with the filling of surgery nylon wire, and this nylon wire is criss-cross arrangement, makes to have winding labyrinth gap between line, reaches the purpose of birth control so that effectively stop sperm, fixed station is positioned at device body end and is connected with the device bulk phase, this diameter is greater than device body diameter, and purpose prevents filter at the deferent duct internal shift, and it is online that the surgery Buddhist nun is not filled in platform inside.
Beneficial effect of the present invention:
1, polyurethane or silastic material can be made different soft, hardness as required, are suitable as very much the deferent duct birth control device and implant in the deferent duct.
2, the present invention has fixed station and can prevent birth control device sliding transfer in deferent duct.
3, medical nylon wire filters and stops and to damage sperm effective, and contraceptive efficacy reaches more than 95%.
4, simple in structure, with low cost.
Four, description of drawings:
Fig. 1 is a contraceptive used in spermatic duct structure chart of the present invention.
Five, the specific embodiment
The device head of contraceptive used in spermatic duct, device body and the fixing medical polyurethane that all selects, device head, device body diameter 1mm, the thick 0.15mm of device body wall, device head length 2.0mm, the long 1.3mm of device body, symmetrical holes diameter 0.5mm, apart from blind end 3mm, annular groove is apart from end 5mm, the wide 1mm of groove, fixed station external diameter 2mm, long 2mm, wall thickness 0.11mm.
Claims (4)
1, contraceptive used in spermatic duct is made up of device head, device body, filtration implant, it is characterized in that: 1. install the body lower end and connect a fixed station; 2. install body and annular groove respectively is set appearance place, two ends up and down.
2, contraceptive used in spermatic duct according to claim 1 is characterized in that described device body, device head adopt medical polyurethane or silicone rubber to make.
3, contraceptive used in spermatic duct according to claim 1 is characterized in that described filtration implant is medical 9-0 nylon wire, and is criss-cross arrangement, so that have cranky gap between line.
4, contraceptive used in spermatic duct according to claim 1 is characterized in that device head length 1.5-2.5mm, the long 1.3-1.5mm of device body, wall thickness 0.1-0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02202940 CN2529622Y (en) | 2002-02-05 | 2002-02-05 | Internal filter of vas deferens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02202940 CN2529622Y (en) | 2002-02-05 | 2002-02-05 | Internal filter of vas deferens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2529622Y true CN2529622Y (en) | 2003-01-08 |
Family
ID=33685306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02202940 Expired - Fee Related CN2529622Y (en) | 2002-02-05 | 2002-02-05 | Internal filter of vas deferens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2529622Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220060216A (en) * | 2020-11-04 | 2022-05-11 | 한양대학교 산학협력단 | Contraception apparatus for male |
-
2002
- 2002-02-05 CN CN 02202940 patent/CN2529622Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220060216A (en) * | 2020-11-04 | 2022-05-11 | 한양대학교 산학협력단 | Contraception apparatus for male |
| WO2022097908A1 (en) * | 2020-11-04 | 2022-05-12 | 한양대학교 산학협력단 | Contraception apparatus for male |
| KR102459986B1 (en) | 2020-11-04 | 2022-10-26 | 한양대학교 산학협력단 | Contraception apparatus for male |
| JP7565647B2 (en) | 2020-11-04 | 2024-10-11 | アイユーシーエフ－エイチワイユー（インダストリー－ユニバーシティー コーオペレイション ファウンデーション ハンヤン ユニバーシティー） | Male contraceptive devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030108 Termination date: 20100205 |