EP0440479A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catheter with controlled valve
Assignee: Ethicon Inc
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Filing: 1991-01-31
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Granted: —
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Expires: 2011-01-31
Abstract
Abstract A catheter hub assembly (10,100) is disclosed wherein the assembly contains a membrane (110) useful in preventing backflow of blood into the flash chamber (26). The hub assembly (10,100) contains a membrane opener (120) which operates upon the insertion of a luer locking mechanism into the catheter hub (52). This membrane opener (120) allows flow of nutritional fluid into the body by causing the opening of the membrane (110) during use of the catheter (50) after removal of the catheter needle (24). <IMAGE> <IMAGE>
Inventors
- 👤 Anthony Y. Van Heugten
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 18:05
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/26; A61M25/00; A61M25/01; A61M25/06; A61M25/0606
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
A catheter hub for attachment of a catheter thereto, characterised by a valve having a membrane disposed within said hub to seal said hub from said catheter, and in that said hub further comprises a membrane opener.
Claim 2
Dependent Claim
41 words
A catheter hub according to claim 1, said hub having a circular cross-section with said membrane placed across said cross-section, said opener slideably engaged within said hub and engageable with said membrane, said membrane placed between said opener and said catheter.
Claim 3
Dependent Claim
36 words
A catheter hub according to claim 1 or claim 2, said valve permitting flow of fluid from said opener side to said catheter side, and rejecting fluid flow from said catheter side to said opener side.
Claim 4
Dependent Claim
24 words
A catheter hub according to any preceding claim, said membrane capable of receiving a needle emplaced from said opener side and into said catheter.
Claim 5
Dependent Claim
39 words
A catheter hub according to any preceding claim, further comprising a needle connected to said hub and insertable through said membrane into said catheter, said membrane remaining sealed to fluid flow from said catheter side to said opener side.
Claim 6
Dependent Claim
95 words
A catheter assembly comprising: a tubular needle housing; a hollow needle extending from the distal end of said needle housing; a flash chamber located within said housing, wherein said hollow needle extends from said flash chamber and the passageway of said hollow needle is in fluid communication with the interior of said flash chamber; a catheter hub mountable on said needle housing; and a catheter attached to said catheter hub and into which is insertable said needle; wherein said hub further comprises a valve having a membrane disposed between said flash chamber and said catheter.
Claim 7
Dependent Claim
12 words
The assembly of claim 6, said hub further comprising a membrane opener.
Claim 8
Dependent Claim
39 words
The assembly of claim 7, said hub having a circular cross-section with said membrane placed across said cross-section, said opener slideably engaged within said hub and engageable with said membrane, said membrane placed between said opener and said catheter.
Claim 9
Dependent Claim
92 words
A catheter assembly comprising: a semi-tubular needle housing having an open top; a flash chamber located in the interior of said needle housing and having a hollow needle extending from the distal end thereof; a tubular needle guard slideably located within said needle housing and including an aperture at its distal end for passage of said hollow needle therethrough and containing said flash chamber; a catheter and catheter hub assembly suitable for mounting on the distal end of said needle guard; and a valve and valve opener assembly held within said hub.
Claim 10
Dependent Claim
41 words
The assembly of claim 9 wherein said opener is slideably engaged in said hub and said hub is attachable to a luer assembly such that with said luer assembly attached to said hub, said valve opener slides to open said valve.
References Cited (Backward Citations)
No citation records indexed.
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