Medical instrument valve having foam partition member
First Claim
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1. An arterial catheter introducer which comprises a cannula portion and a proximally positioned, tubular housing, said housing comprising a valve for receiving and sealing an elongated member which penetrates said valve, said valve comprising an elastomeric partition member, the improvement comprising, in combination:
- said partition member comprising a closed-cell foam;
hydrophobic elastomer material, the closed cells of said foam carrying a liquid agent within said cells to facilitate penetration of said elongated member therethrough and sealing of said valve, said partition member being initially aperture-free prior to use.
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Abstract
A medical instrument such as a catheter introducer comprises a housing. The housing includes a valve for receiving and sealing an elongated member which penetrates the valve. The valve comprises an elastomeric partition member. By this invention, the partition member comprises a foamed elastomer material to facilitate penetration of the elongated member therethrough and sealing of the valve
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Citations
10 Claims
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1. An arterial catheter introducer which comprises a cannula portion and a proximally positioned, tubular housing, said housing comprising a valve for receiving and sealing an elongated member which penetrates said valve, said valve comprising an elastomeric partition member, the improvement comprising, in combination:
said partition member comprising a closed-cell foam;
hydrophobic elastomer material, the closed cells of said foam carrying a liquid agent within said cells to facilitate penetration of said elongated member therethrough and sealing of said valve, said partition member being initially aperture-free prior to use.- View Dependent Claims (2)
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3. A medical instrument comprising a housing, said housing comprising a valve for receiving and sealing an elongated member which penetrates said valve, said valve comprising an elastomeric partition member, the improvement comprising, in combination:
said partition member comprising a foamed elastomer material of the closed cell foam type, closed cells of said foamed elastomer material carrying a liquid agent to facilitate the use of said medical instrument. - View Dependent Claims (4, 5, 6, 7, 8)
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9. An arterial catheter introducer which comprises a cannula portion and a proximally positioned tubular housing, said housing comprising a valve for receiving and sealing an elongated member which penetrates said valve, said valve comprising an elastomeric partition member, the improvement comprising, in combination:
said partition member comprising a foamed, hydrophobic elastomer material, with the foamed elastomer material defining cells which carry a lubricant to facilitate the use of said catheter introducer. - View Dependent Claims (10)
Specification