US4534763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypodermic cartridge
Assignee: GETTIG TECHNOLOGIES Inc
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Filing: 1983-09-14
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Granted: 1985-08-13
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Expires: 2003-09-14
Abstract
Abstract A hypodermic cartridge includes a barrel having a cannula attached to a forward end thereof. The rear or inner end of the cannula extends into the barrel interior and is provided with a deflected or bent section having its distal portion juxtaposed the peripheral wall of the barrel. In use, upon aspiration, the first droplet of blood is readily viewable through the barrel wall regardless of whether the medicament contained in the barrel is clear, translucent or opaque.
Inventors
- 👤 William A. Gettig
- 👤 Gerald S. Fetterolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:46
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/34; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150374; A61B5/150381; A61B5/150389; A61B5/150404; A61B5/150526; A61B5/150534; A61B5/150572; A61B5/15058; A61B5/150603; A61B5/150694; A61B5/150717; A61B5/153; A61B5/1535; A61M5/3202; A61M5/349; Y; Y10; Y10S; Y10S604/00; Y10S604/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
195 words
A hypodermic cartridge including, a barrel provided with a peripheral wall defining an interior adapted to contain a medicament, said peripheral wall including an inner surface, a forward end wall communicating with a nose projecting forward of said end wall, said nose having a bore communicating with said barrel interior, a cannula provided with a central passageway, said cannula including a substantially straight main section having a rear portion disposed in said nose bore, said cannula having an inner end projecting from said rear portion into said barrel interior, said cannula inner end angularly deflected toward said barrel peripheral wall to provide a bent inner end, said forward end wall tapered from said barrel peripheral wall to said bore of said nose, said cannula bent inner end disposed at an angle substantially coinciding with that of said forward end wall and flushly engaging same throughout its extent, said bent inner end provided with a distal portion juxtaposed said barrel inner surface, and said cannula distal portion juxtaposed the intersection of said barrel peripheral wall and forward end wall whereby, upon aspiration blood is readily visually detected at said cannula distal portion through said barrel wall.
Claim 2
Dependent Claim
195 words
A hypodermic cartridge including, a barrel provided with a peripheral wall defining an interior adapted to contain a medicament, said peripheral wall including an inner surface, a forward end wall communicating with a nose projecting forward of said end wall, said nose having a bore communicating with said barrel interior, a cannula provided with a central passageway, said cannula including a substantially straight main section having a rear portion disposed in said nose bore, said cannula having an inner end projecting from said rear portion into said barrel interior, said cannula inner end angularly deflected toward said barrel peripheral wall to provide a bent inner end, said forward end wall tapered from said barrel peripheral wall to said bore of said nose, said cannula bent inner end disposed at an angle substantially coinciding with that of said forward end wall and flushly engaging same throughout its extent, said bent inner end provided with a distal portion juxtaposed said barrel inner surface, and said cannula distal portion juxtaposed the intersection of said barrel peripheral wall and forward end wall whereby, upon aspiration blood is readily visually detected at said cannula distal portion through said barrel wall.
Claim 3
Dependent Claim
26 words
A hypodermic cartridge according to claim 1 wherein, said cannula inner end is bent 100°-130° relative the longitudinal axis of said barrel and cannula rear portion.
Claim 4
Dependent Claim
42 words
A hypodermic cartridge according to claim 1 wherein, said cannula distal portion is substantially square cut relative the axial extent of the adjacent said inner end whereby flush contact between all of said distal portion and said barrel inner surface is precluded.
Claim 5
Dependent Claim
31 words
A hypodermic cartridge according to claim 1 including, a ferrule on said nose, said cannula extending through said ferrule, and means securing said cannula rear portion and ferrule to said nose.
Claim 6
Dependent Claim
12 words
A hypodermic cartridge according to claim 1 wherein, said medicament is opaque.
Claim 7
Dependent Claim
12 words
A hypodermic cartridge according to claim 1 wherein, said medicament is translucent.
Claim 8
Dependent Claim
12 words
A hypodermic cartridge according to claim 1 wherein, said medicament is clear.
Claim 9
Dependent Claim
14 words
A hypodermic cartridge according to claim 2 wherein, said inner end is bent 120°.
Claim 10
Dependent Claim
16 words
A hypodermic cartridge according to claim 4 including, a protective sleeve removably attached to said ferrule.
Claim 11
Dependent Claim
18 words
A hypodermic cartridge according to claim 9 wherein, said sleeve is resilient and frictionally attached to said ferrule.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |