Patent US3851647A successfully refreshed from Google Patents.
US3851647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous catheter introduction assembly
Assignee: CR Bard Inc
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Filing: 1973-03-07
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Granted: 1974-12-03
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Expires: 1993-03-07
Abstract
Abstract An intravenous needle and catheter combination wherein a plastic catheter is mounted on a hub which is connected to an adapter by means of a short flexible rubber or plastic tube adapted to be bent laterally and to be resealably punctured by a needle (or trocar) which extends initially through the hub and catheter with its point projecting from the distal end of the latter. After venipuncture the needle is withdrawn, leaving the catheter in the vein; the needle hole through the side of the tube tends to close, but the material may have taken some permanent set during sterilization so that mechanical means is provided to ensure closure of the hole, such mechanical means becoming effective either automatically upon removal of the needle or resulting from adjustment of certain parts.
Inventors
- 👤 M Monestere
- 👤 V Vaillancourt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:55
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0606; A61M39/00; A61M39/02; A61M39/06; A61M39/0606
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
An intravenous needle and catheter combination comprising a plastic catheter having a tapered distal end and a hub, a flexible tube of elastic material secured at its distal end to said hub, an adapter-hub engaged with the proximal end of said tube, a needle having a beveled point removably inserted through a wall of said tube at a point of entry intermediate said hub and adapter-hub and extending through the lumen of said catheter, and separate mechanical means on said tube for closing said point of entry after removal of the needle, wherEin said mechanical means is a separate element movable between needle-passing position and entry-closing position.
Claim 2
Dependent Claim
107 words
An intravenous needle and catheter combination comprising a plastic catheter having a tapered distal end and a hub, a flexible tube of elastic material secured at its distal end to said hub, an adapter-hub engaged with the proximal end of said tube, a needle having a beveled point removably inserted through a wall of said tube at a point of entry intermediate said hub and adapter-hub and extending through the lumen of said catheter, and separate mechanical means on said tube for closing said point of entry after removal of the needle, wherEin said mechanical means is a separate element movable between needle-passing position and entry-closing position.
Claim 3
Dependent Claim
22 words
An intravenous needle and catheter combination according to claim 1 wherein said mechanical means is a resilient band surrounding said flexible tube.
Claim 4
Dependent Claim
147 words
An improved intravenous needle and catheter combination comprising a plastic catheter having a tapered distal end and a hub, a flexible tube of elastic material secured at its distal end to said hub, an adapter-hub engaged with the proximal end of said tube, a needle having a beveled point removably received through a wall of said tube at a point of entry intermediate said hub and adapter-hub and through the lumen of said catheter, wherein said improvement consists of a band surrounding and covering said flexible tube at said point of entry, said band being resilient for closing said point of entry after removal of the needle, said needle being effective to stretch said band upon being placed between the resilient band and the flexible tube to permit passage of the needle through the wall of said tube at the point of entry underneath the resilient band.
Claim 5
Dependent Claim
147 words
An improved intravenous needle and catheter combination comprising a plastic catheter having a tapered distal end and a hub, a flexible tube of elastic material secured at its distal end to said hub, an adapter-hub engaged with the proximal end of said tube, a needle having a beveled point removably received through a wall of said tube at a point of entry intermediate said hub and adapter-hub and through the lumen of said catheter, wherein said improvement consists of a band surrounding and covering said flexible tube at said point of entry, said band being resilient for closing said point of entry after removal of the needle, said needle being effective to stretch said band upon being placed between the resilient band and the flexible tube to permit passage of the needle through the wall of said tube at the point of entry underneath the resilient band.
Claim 6
Dependent Claim
88 words
A catheter assembly comprising a plastic catheter having a tapered distal end and a hub, a flexible tube of elastic material secured at its distal end to said hub, an adapter-hub engaged with the proximal end of said tube, said tube having a point of entry for an intravenous needle intermediate said hub and adapter-hub and a resilient band surrounding the tube and elastically secured over the point of entry to prevent leakage from said point of entry upon removal of the intravenous needle from the tube wall.
Claim 7
Dependent Claim
88 words
A catheter assembly comprising a plastic catheter having a tapered distal end and a hub, a flexible tube of elastic material secured at its distal end to said hub, an adapter-hub engaged with the proximal end of said tube, said tube having a point of entry for an intravenous needle intermediate said hub and adapter-hub and a resilient band surrounding the tube and elastically secured over the point of entry to prevent leakage from said point of entry upon removal of the intravenous needle from the tube wall.
Claim 8
Dependent Claim
29 words
An intravenous needle and catheter combination according to claim 2 wherein the resilient band is elastically secured to the flexible tube over the point of entry of 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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |