Medical puncturing set
First Claim
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1. A puncturing set comprising:
- a housing including a hose extension having a free end;
a tubular puncturing needle disposed in the housing and extending axially substantially through the hose extension, the puncturing needle having a forward upstream pointed end, the puncturing needle being axially movable between an extended position and a retracted position, the pointed end of the puncturing needle extending axially past the free end and disposed outside of the hose extension in the extended position and being disposed inside the hose extension in the retracted position;
a locking mechanism for locking the puncturing needle in the retracted position;
a fluid withdrawal mechanism arranged at an aft downstream end of the puncturing needle; and
a sealing arrangement for sealing a space between the puncturing needle and the housing at least when the puncturing needle is in the retracted position.
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Abstract
A puncturing set has a housing with a hose extension. A tubular puncturing needle is disposed inside the housing and extends axially substantially over the length of the hose extension. The needle is movable between an extended position, in which its forward, pointed end projects axially from a free end of the hose extension, and a retracted position, in which the pointed end of the needle is inside the hose extension. At the aft, downstream end of the puncturing needle is a fluid withdrawal mechanism and there is a sealing arrangement between the puncturing needle and the housing.
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Citations
7 Claims
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1. A puncturing set comprising:
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a housing including a hose extension having a free end; a tubular puncturing needle disposed in the housing and extending axially substantially through the hose extension, the puncturing needle having a forward upstream pointed end, the puncturing needle being axially movable between an extended position and a retracted position, the pointed end of the puncturing needle extending axially past the free end and disposed outside of the hose extension in the extended position and being disposed inside the hose extension in the retracted position; a locking mechanism for locking the puncturing needle in the retracted position; a fluid withdrawal mechanism arranged at an aft downstream end of the puncturing needle; and a sealing arrangement for sealing a space between the puncturing needle and the housing at least when the puncturing needle is in the retracted position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification