US5078693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety hypodermic syringe
Assignee: Individual
•
Filing: 1990-03-20
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Granted: 1992-01-07
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Expires: 2010-03-20
Abstract
Abstract According to the invention a hypodermic syringe includes a needle guard that prevents accidental puncture by the needle. The guard includes a fixed leaf that is attached to the needle hub and a hinged leaf that is hingedly attached to the fixed leaf. The hinged leaf is moveable from a shielding position wherein shield the needle tip to a retracted position wherein the needle tip is exposed for insertion. A spring biases the hinged leaf in the shielding position. A trigger attached to the hinged leaf is activated by the user to move the hinged leaf the retracted position.
Inventors
- 👤 Jerry P. Shine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:16
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M5/321; A61M5/3216
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
215 words
A safety hypodermic syringe including: a hypodermic syringe including: a barrel having: an upper end including: a finger flange; and a needle end; and a needle having: an inner end attached to said barrel needle end; and a tip end; and a needle guard attached to said syringe comprising: attachment means for movably connecting a movable leaf means to said syringe; movable leaf means including: an inner end; and a shielding portion; said movable leaf means movably attached by said attachment means to said syringe such that said movable leaf means is movable between a shielding position whereby said shielding portion shields said needle tip end and a retracted position whereby said shielding portion is disposed away from said needle tip end; and trigger means attached to said movable leaf means near said inner end thereof for moving said movable leaf means to the retracted position in response to a force applied to said trigger means by a user of said hypodermic syringe; said trigger means being so attached and being of sufficient length such that said trigger means in the retracted position extends to the proximity of said finger flange such that a single finger of a user may simultaneously bear against said finger flange and retain said trigger means in the retracted position.
Claim 2
Dependent Claim
215 words
A safety hypodermic syringe including: a hypodermic syringe including: a barrel having: an upper end including: a finger flange; and a needle end; and a needle having: an inner end attached to said barrel needle end; and a tip end; and a needle guard attached to said syringe comprising: attachment means for movably connecting a movable leaf means to said syringe; movable leaf means including: an inner end; and a shielding portion; said movable leaf means movably attached by said attachment means to said syringe such that said movable leaf means is movable between a shielding position whereby said shielding portion shields said needle tip end and a retracted position whereby said shielding portion is disposed away from said needle tip end; and trigger means attached to said movable leaf means near said inner end thereof for moving said movable leaf means to the retracted position in response to a force applied to said trigger means by a user of said hypodermic syringe; said trigger means being so attached and being of sufficient length such that said trigger means in the retracted position extends to the proximity of said finger flange such that a single finger of a user may simultaneously bear against said finger flange and retain said trigger means in the retracted position.
Claim 3
Dependent Claim
47 words
The safety hypodermic syringe of claim 1 wherein said needle guard further includes: biasing means for biasing said movable leaf means in the shielding position such that upon release of said trigger means by a user's finger said movable leaf means will return to the shielding position.
Claim 4
Dependent Claim
26 words
The safety hypodermic syringe of claim 1 wherein: said attachment means includes: bore means for receiving said syringe for attaching said attachment means to said syringe.
Claim 5
Dependent Claim
37 words
The safety hypodermic syringe of claim 3 wherein: said hypodermic syringe includes needle hub means for mounting said needle to said barrel; and said bore means is adapted for receiving and for attachment to said needle hub.
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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |