US3859998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intravenous needle assembly
Assignee: Johnson and Johnson
•
Filing: 1972-06-05
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Granted: 1975-01-14
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Expires: 1992-06-05
Abstract
Abstract A plug having a slitted diaphragm for venting air from, but preventing the passage of blood from, a transparent blooddetecting chamber located on the proximal end of the hub of a hollow pointed hypodermic needle during a venipuncture procedure.
Inventors
- 👤 Joseph John Thomas
- 👤 William Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:12
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/20; A61B; A61B17/00; A61B17/34; A61M25/00; A61M25/01; A61M25/06; A61M25/0693; A61B2017/00831; A61B2017/00902; A61B2017/00907; Y; Y10; Y10S; Y10S604/00; Y10S604/90
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
An intravenous needle assembly comprising: a hollow pointed needle; a hub secured to the proximal end of said needle, said hub having a transparent blood-detecting chamber; and a plug removably secured in said chamber, said plug having an axial opening therethrough and a thin diaphragm disposed across said opening, said diaphragm having a slit formed therein for permitting the passage of air from said chamber, the amount of material in said diaphragm being substantially unchanged by the formation of said slit therein.
Claim 2
Dependent Claim
82 words
An intravenous needle assembly comprising: a hollow pointed needle; a hub secured to the proximal end of said needle, said hub having a transparent blood-detecting chamber; and a plug removably secured in said chamber, said plug having an axial opening therethrough and a thin diaphragm disposed across said opening, said diaphragm having a slit formed therein for permitting the passage of air from said chamber, the amount of material in said diaphragm being substantially unchanged by the formation of said slit therein.
Claim 3
Dependent Claim
19 words
The intravenous needle assembly of claim 1 wherein said diaphragm is located adjacent the distal end of said plug.
Claim 4
Dependent Claim
13 words
The intravenous needle assembly of claim 2 wherein said slit is diametrically oriented.
Claim 5
Dependent Claim
18 words
The intravenous needle assembly of claim 1 further comprising a flexible plastic intravenous catheter disposed over said needle.
Claim 6
Dependent Claim
27 words
The intravenous needle assembly of claim 4 wherein said catheter is secured to a hub which is removably attached to the distal end of said needle hub.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |