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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0679261 (1984-12-07) |
| 발명자 / 주소 |
|
| 인용정보 | 피인용 횟수 : 415 인용 특허 : 0 |
An improved prosthetic heart valve comprises a support body or stent covered by a layer of biological tissue having only the smooth surfaces thereof presented outwardly. The stent has a cutaway section and a flexible cusp sewn thereto for opening and closing the valve. The valve cusp is made of peri
An improved prosthetic heart valve comprises a support body or stent covered by a layer of biological tissue having only the smooth surfaces thereof presented outwardly. The stent has a cutaway section and a flexible cusp sewn thereto for opening and closing the valve. The valve cusp is made of pericardial tissue which has been doubled over such that the rough side thereof is folded inwardly. A sewing ring is secured around the base of the stent and is made of pericardial or other biological material, so as to increase the likelihood of the sewing ring becoming covered with epithelium. The smooth-surfaced biological construction of the valve is highly durable and reduces the risk of thrombogenic or infection sites.
A prosthetic valve comprising a support body of generally cylindrical shape having a lower circumferential base portion, an upper portion extending over at least half of a circumference thereof and a cutaway section defined over the remaining circumference thereof, the body having edges extending cu
A prosthetic valve comprising a support body of generally cylindrical shape having a lower circumferential base portion, an upper portion extending over at least half of a circumference thereof and a cutaway section defined over the remaining circumference thereof, the body having edges extending curvilinearly along the cutaway section from the upper portion to the base portion, a plurality of sewing holes formed in the body, a covering of biological tissue secured to the body through the sewing holes which has only smooth surfaces thereof presented outwardly, a flexible flap of biological tissue of opening and closing the valve having a lower portion secured to said curved edges and to said base portion, and an upper portion of the flap extending beyond the upper portion of the body, said flap and said cutaway section of the body being dimensined such that the flap can be collapsed to a closed position against an inner wall of the body to close the valve, said flap being made of pericardial tissue doubled over, such that a rough side thereof is folded inwardly and only a smooth side thereof is presented outwardly.
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