US3797486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous infusion assembly
Assignee: Individual
•
Filing: 1973-01-02
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Granted: 1974-03-19
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Expires: 1993-01-02
Abstract
Abstract An improvement for intravenous surgical needle assembly that is implanted in the patient for a relatively long period of time for intermittent intravenous injections. The improved assembly includes a chamber or reservoir holding a supply of a second fluid to be introduced through the intravenous needle, usually an anti-coagulant, and a valve to selectively close off the second fluid''s circulation therethrough while allowing the principal fluid to flow intravenously; and alternatively close off the principal fluid flow while allowing the second fluid to circulate from the reservoir in and through the surgical needle, usually for the purpose of preventing coagulation in and about the tip of the needle.
Inventors
- 👤 R Shaps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:45
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
240 words
In an intravenous assembly for the injection of a principal fluid into a blood vessel of the human body, said assembly having a hollow needle for fluid communication with the source of said fluid and a tip for infusion into tHe blood vessel, and wherein said assembly is adapted to remain implanted in a human vessel for repeated injections over a period of time, the improvement to selectively provide said assembly with a second fluid at said needle tip to prevent coagulation of blood therein comprising; a reservoir chamber adapted to carry a supply of said second fluid; a flexible walled hollow coupling having an open end for fluid communication from within said reservoir chamber into said coupling and an opening formed in said coupling adapted to receive said principal fluid therethrough into the coupling from a source of such fluid, said coupling formed with an open terminus adapted to receive the posterior end of said hollow needle; valve means carried by said coupling for selectively closing off said opening for principal fluid and said open end in communication with said second fluid reservoir, said valve means comprising a substantially rigid valve flap; and position holding means on the coupling for engaging said flap, whereby principal fluid from a source thereof may be infused intermittently through said needle via said coupling and said second fluid may be delivered into the needle from said reservoir chamber between injections of principal fluid.
Claim 2
Dependent Claim
240 words
In an intravenous assembly for the injection of a principal fluid into a blood vessel of the human body, said assembly having a hollow needle for fluid communication with the source of said fluid and a tip for infusion into tHe blood vessel, and wherein said assembly is adapted to remain implanted in a human vessel for repeated injections over a period of time, the improvement to selectively provide said assembly with a second fluid at said needle tip to prevent coagulation of blood therein comprising; a reservoir chamber adapted to carry a supply of said second fluid; a flexible walled hollow coupling having an open end for fluid communication from within said reservoir chamber into said coupling and an opening formed in said coupling adapted to receive said principal fluid therethrough into the coupling from a source of such fluid, said coupling formed with an open terminus adapted to receive the posterior end of said hollow needle; valve means carried by said coupling for selectively closing off said opening for principal fluid and said open end in communication with said second fluid reservoir, said valve means comprising a substantially rigid valve flap; and position holding means on the coupling for engaging said flap, whereby principal fluid from a source thereof may be infused intermittently through said needle via said coupling and said second fluid may be delivered into the needle from said reservoir chamber between injections of principal fluid.
Claim 3
Dependent Claim
79 words
The improvement in an intravenous assembly as defined in claim 1 and wherein said flap is shaped to overlay said open end and said opening; means pivotally mounting said flap on the inside of the wall of said coupling in position to selectively overlay said open end and said opening; and means secured to said flap and having a portion thereof external to said coupling for selectively positioning the flap to overlay said open end and, alternatively, said opening.
Claim 4
Dependent Claim
134 words
The improvement in an intravenous assembly as defined in claim 2 and wherein further the wall of said flexible coupling is fabricated of a relatively pliable material; said means secured to said flap having a portion external to said coupling comprises a nodule fabricated of a relatively stiff material, said nodule sealably secured through said coupling wall to said flap along the pivotal axis thereof and extending outwardly therefrom, and shaped for manual engagement to cause said flap to overlay said opening when the nodule is in one position, and to overlay said open end of the coupling when manually displaced to another position; and means proximate said opening and said open end to hold said flap firmly in position when the latter is positioned to overlay said opening and, alternatively, said open end.
Claim 5
Dependent Claim
213 words
The improvement in an intravenous assembly as defined in claim 1 and wherein further said coupling is fabricated to provide said open end adjacent to said opening for principal fluid, said open end and said opening shaped to have substantially the same cross-sectional area and shape; said coupling being fabricated of a relatively pliable material; and said valve means comprises: a flap shaped to overlay said open end and said opening; means mounting said flap inside said coupling in position to selectively overlay said open end and said opening; and said holding means being proximate said opening and comprising a clasp to hold said flap firmly in position when the latter is positioned to overlay said opening and, alternatively, said open end, whereby said flap may be maneuvered by manually squeezing the coupling in the vicinity of said flap and causing the latter to be moved in position to overlay said open end to block flow of said second fluid and allow principal fluid to flow through said opening and coupling into and through said needle, and, alternatively cause the flap to be moved in position to overlay said opening to block flow of said principal fluid and allow said second fluid to flow through said open end into and through the needle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |