Patent · US Expired

Prosthetic closure element for the replacement of the mitral and tricuspid valve in the human heart

US4218783A · kind A · utility

69Cited by

7References

13Claims

0Family size

Assignee

Dr. E. Fresenius Chem.-pharm Industrie KG · DE

Inventors

Helmut Reul · St. Blasien, DE
Dhanjoo Noshir Ghista · Sunnyvale, US

Key dates

Filing date	Sep 21, 1978
Grant date	Aug 26, 1980
Priority date	—
Expiry date	Sep 21, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7891
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A prosthetic heart valve has a tubular valve housing, a suture ring, and a membrane-like gate supported within the housing. The flexible membrane is generally elliptical in shape and is fastened in the housing along half its periphery. Flexure of the membrane moves it between an open position which permits blood flow through the housing and a closed position which blocks the flow path of the housing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.