US4838863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safe needle system for collecting fluids
Assignee: Individual
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Filing: 1987-09-21
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Granted: 1989-06-13
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Expires: 2007-09-21
Abstract
Abstract A hypodermic syringe having a cylindrical outer body adapted to accept a smaller fluid storage vial within the inner walls thereof and having a removable cap on one end of said cylinder for providing access to insert and remove the vial with a spring loaded double headed needle assembly integrated into the other end thereof and held in place by a retainer until the storage has been punctured by one and of the needle, the vial filled and removed and the needle assembly retracted into the space vacated by the vial.
Inventors
- 👤 Edward F. Allard
- 👤 Daniel Q. Longmire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:09
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M5/321; A61M5/322; A61M5/3234; A61M5/3232; A61M2005/3101; A61M2005/3206; A61M5/3221; A61M2005/3223; A61M2005/3224
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
A hypodermic needle wherein the needle is automatically retracted after use for rendering it inaccessible and non-usable, comprising a spring loaded needle open at each end, whereby fluid is drawn from one end and ejected through the other end whereby the ejected fluid is captured by a container and whereby the spring loaded needle is held in mechanical equilibrium by break-away tabs whereby the break-away tabs are broken by tab breakers whereby the force for the tab breakers is provided by pushing down on the container whereby when the tab holders are broken, the needle is free, whereby the freed needle is held in mechanical equilibrium until the container is removed whereby when the container is removed, the needle is pushed up into the container holder by the spring, whereby a stop prevents continued upward movement of the needle whereby the stop forces the needle from its centerline position whereby a cap prevents residual liquid inside the holder from leaking through its opening whereby a spring holder assembly holds the needle and spring in place and prevents liquid from leaking through the hole left by the retracted needle.
Claim 2
Dependent Claim
188 words
A hypodermic needle wherein the needle is automatically retracted after use for rendering it inaccessible and non-usable, comprising a spring loaded needle open at each end, whereby fluid is drawn from one end and ejected through the other end whereby the ejected fluid is captured by a container and whereby the spring loaded needle is held in mechanical equilibrium by break-away tabs whereby the break-away tabs are broken by tab breakers whereby the force for the tab breakers is provided by pushing down on the container whereby when the tab holders are broken, the needle is free, whereby the freed needle is held in mechanical equilibrium until the container is removed whereby when the container is removed, the needle is pushed up into the container holder by the spring, whereby a stop prevents continued upward movement of the needle whereby the stop forces the needle from its centerline position whereby a cap prevents residual liquid inside the holder from leaking through its opening whereby a spring holder assembly holds the needle and spring in place and prevents liquid from leaking through the hole left by the retracted needle.
Claim 3
Dependent Claim
140 words
A hypodermic needle wherein the needle is retracted after use for rendering it inaccessible and non-reusable, comprising a spring loaded needle open at each end, whereby fluid is drawn from one end and ejected through the other end whereby the ejected fluid is captured by a container and whereby the spring loaded needle is held in mechanical equilibrium by a spring release, whereby when the spring release is pulled, the needle is forced by the spring into the container holder whereby its upward movement is stopped by a needle stop, whereby the needle stop forces the needle from its centerline position, whereby a cap prevents residual fluid inside the holder from leaking through its opening whereby a spring holder assembly holds the needle and spring in place and prevents liquid from leaking through the hole left by the retracted needle.
Claim 4
Dependent Claim
140 words
A hypodermic needle wherein the needle is retracted after use for rendering it inaccessible and non-reusable, comprising a spring loaded needle open at each end, whereby fluid is drawn from one end and ejected through the other end whereby the ejected fluid is captured by a container and whereby the spring loaded needle is held in mechanical equilibrium by a spring release, whereby when the spring release is pulled, the needle is forced by the spring into the container holder whereby its upward movement is stopped by a needle stop, whereby the needle stop forces the needle from its centerline position, whereby a cap prevents residual fluid inside the holder from leaking through its opening whereby a spring holder assembly holds the needle and spring in place and prevents liquid from leaking through the hole left by the retracted 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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |