Bloodless catheter
First Claim
Patent Images
1. A bloodless catheter comprising a first hub having a bore at a proximal end;
- a cannula fixed in and extending from an opposite distal end of said hub for invasive positioning in a blood vessel; and
a septum seal mounted in said bore of said hub in circumferentially sealed relation to prevent a flow of fluid from said cannula to said proximal end of said hub, said seal having a weakened central section.
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Accused Products
Abstract
The over-the-needle catheter is provided with a septum seal within the hub of the catheter. The introducer needle passes through the septum seal and into the catheter. Upon removal of the introducer needle, the septum seal reseals so that blood is prevented from flowing from the patient out of the hub. A male luer adaptor is used to form a connection, for example, to an IV bag by pushing the seal onto a tube secured within the hub and communicating with the catheter or, in another embodiment, by pushing a piercing ring through a slit in the septum seal to form a permanent lumen.
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Citations
20 Claims
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1. A bloodless catheter comprising
a first hub having a bore at a proximal end; -
a cannula fixed in and extending from an opposite distal end of said hub for invasive positioning in a blood vessel; and
a septum seal mounted in said bore of said hub in circumferentially sealed relation to prevent a flow of fluid from said cannula to said proximal end of said hub, said seal having a weakened central section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. In combination
first hub having a bore at a proximal end, a cannula fixed in and extending from an opposite distal end of said hub, a septum seal mounted in said bore of said hub in circumferentially sealed relation to prevent a flow of fluid from said cannula to said proximal end of said hub, and a tube mounted in said seal in sealed relation and extending into said cannula; -
a needle hub telescopically mounted in said bore of said first hub and an introducer needle fixed in said needle hub and extending through said seal in sealed relation and through said cannula; and
a male luer adaptor for slidable mounting in said bore of said first hub after withdrawal of said needle hub therefrom, said adaptor being sized to engage and push said seal over said tube while receiving said tube therein in concentric relation.
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20. In combination
a first hub having a bore at a proximal end, a cannula fixed in and extending from an opposite distal end of said hub, a septum seal mounted in said bore of said hub in circumferentially sealed relation, said seal having a centrally disposed slit to define a valve, and a piercing ring mounted on said seal concentrically of said slit; -
a needle hub telescopically mounted in said bore of said first hub and an introducer needle fixed in said needle hub and extending through said seal in sealed relation and through said cannula; and
a male luer adaptor for slidable mounting in said bore of said first hub after withdrawal of said needle hub therefrom, said adaptor being sized to engage and push said piercing ring through said slit in said seal to communicate said adaptor with said cannula.
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Specification