Bloodless catheter with self-shielding needle
First Claim
Patent Images
1. A catheter assembly comprising:
- a catheter attached to a catheter hub;
a double membrane emplaced in said catheter hub comprising a first membrane and a second membrane separated by a chamber having a longitudinal axis, said second membrane slidable in a direction transverse to said longitudinal axis;
a needle insertable into said catheter through said catheter hub;
a needle guard attached to said catheter hub wherein said needle is insertable through said needle guard into said catheter hub;
said needle slidable relative to said needle guard, catheter hub and catheter through said longitudinal axis; and
locking means preventing removal of said needle from said needle guard.
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Abstract
A catheter with a double membrane gasket and a locking needle guard is disclosed. The gasket prevents blood from seeping through the catheter hub. The locking needle guard prevents the user from inadvertent needle sticks.
218 Citations
24 Claims
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1. A catheter assembly comprising:
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a catheter attached to a catheter hub; a double membrane emplaced in said catheter hub comprising a first membrane and a second membrane separated by a chamber having a longitudinal axis, said second membrane slidable in a direction transverse to said longitudinal axis; a needle insertable into said catheter through said catheter hub; a needle guard attached to said catheter hub wherein said needle is insertable through said needle guard into said catheter hub;
said needle slidable relative to said needle guard, catheter hub and catheter through said longitudinal axis; andlocking means preventing removal of said needle from said needle guard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15)
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11. A catheter assembly comprising:
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an insertion needle; a catheter attached to a catheter hub; a gasket in said catheter hub and containing a double membrane separated by a chamber, said chamber having a longitudinal axis; said needle insertable into said catheter though said double membrane and across said chamber along said longitudinal axis; wherein said double membrane comprises a first membrane and second membrane separated by said chamber, and said second membrane is slidable in a direction transverse to the longitudinal axis of said chamber. - View Dependent Claims (12, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification