Protective means for a needle or similar cannula medical device
First Claim
1. A protective sheath for a cannula having a distal end for percutaneous insertion, said protective sheath comprising an elongated, flexible tubular member for slidably fitting over said cannula, said tubular member having a distal end arcuately depending over the distal end of said cannula and compressibly retractable therefrom and a proximate end, said distal end having an opening through which the cannula may pass whereby the distal end of the cannula is exposed during insertion thereof, and the distal end of the sheath extends over and covers the distal end of the cannula when the cannula is withdrawn.
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Accused Products
Abstract
A protective sheath for a cannula which has distal end for percutaneous insertion and a proximate end having a hub or like assembly. The protective sheath comprises an elongated, flexible tubular member which slidably fits over the cannula. The tubular member has a distal end which is disposed over the distal end of the cannula and is compressibly retractable therefrom. The distal end of the tubular member has an opening through which the cannula may pass so as to expose the distal end of the cannula during insertion thereof, but when the cannula is withdrawn, the distal end of the sheath extends over and covers the distal end of the cannula.
143 Citations
12 Claims
- 1. A protective sheath for a cannula having a distal end for percutaneous insertion, said protective sheath comprising an elongated, flexible tubular member for slidably fitting over said cannula, said tubular member having a distal end arcuately depending over the distal end of said cannula and compressibly retractable therefrom and a proximate end, said distal end having an opening through which the cannula may pass whereby the distal end of the cannula is exposed during insertion thereof, and the distal end of the sheath extends over and covers the distal end of the cannula when the cannula is withdrawn.
Specification