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US3820652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaged syringe construction
Assignee: Individual
•
Filing: 1972-11-14
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Granted: 1974-06-28
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Expires: 1992-11-14
Abstract
Abstract A cylinder for containing medicine having one end closed and a piston in the other end, a needle mounted on the closed cylinder end in a storage position exteriorly of the cylinder and shiftable to a used position impaled through the closed cylinder end, an open ended outer protector or shield about the cylinder having an internal shoulder adjacent to the closed cylinder end and an end closure on the end adjacent to the piston, and a needle sheath extending into the shield past the shoulder where it is provided with a retaining enlargement, so that the cylinder and needle are completely enclosed.
Inventors
- 👤 T Thackston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:21
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/002; A61M5/178; A61M5/24; A61M2005/2403; A61M2005/2407; A61M5/2455; A61M5/2466; A61M2005/247; A61M5/31; A61M5/32; A61M5/3205; A61M5/3278; A61M2005/3279; A61M5/315; A61M5/31511; A61M5/3202; A61M5/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
211 words
A packaged syringe construction comprising a cylinder for containing medicine and having one end open and the other end sealed with a penetrable diaphragm, a piston in closing relation with the open end of said cylinder, a needle mount slidably carried on said other cylinder end, a needle carried by said needle mount for movement between a storage position entirely exteriorly of said cylinder and a use position impaled through said other cylinder end for communication between the interior and exterior of said cylinder, a protective shield circumposed about said cylinder having its opposite ends open and longitudinally shiftable on said cylinder, an internal shoulder in said shield adjacent to said other cylinder end, an end closure on said shield adjacent to said one cylinder end, a needle sheath extending endwise into said shield past said shoulder, an enlargement on said sheath inwardly of said shoulder for retention thereby, and resiliently flexible finger means extending from said sheath enlargement for limiting endwise abutting engagement with said cylinder and sized to be incapable of passing between said cylinder and the surrounding shield, whereby sheath movement inwardly is limited by said finger means engagement when said shield is on the cylinder to protect the sterile integrity and activation of the device before use.
Claim 2
Dependent Claim
211 words
A packaged syringe construction comprising a cylinder for containing medicine and having one end open and the other end sealed with a penetrable diaphragm, a piston in closing relation with the open end of said cylinder, a needle mount slidably carried on said other cylinder end, a needle carried by said needle mount for movement between a storage position entirely exteriorly of said cylinder and a use position impaled through said other cylinder end for communication between the interior and exterior of said cylinder, a protective shield circumposed about said cylinder having its opposite ends open and longitudinally shiftable on said cylinder, an internal shoulder in said shield adjacent to said other cylinder end, an end closure on said shield adjacent to said one cylinder end, a needle sheath extending endwise into said shield past said shoulder, an enlargement on said sheath inwardly of said shoulder for retention thereby, and resiliently flexible finger means extending from said sheath enlargement for limiting endwise abutting engagement with said cylinder and sized to be incapable of passing between said cylinder and the surrounding shield, whereby sheath movement inwardly is limited by said finger means engagement when said shield is on the cylinder to protect the sterile integrity and activation of the device before use.
Claim 3
Dependent Claim
44 words
A packaged syringe construction according to claim 1, in combination with an elongate hollow rod removably engaged over said sheath, and interfitting fastener elements on said piston and rod for connection therebetween, whereby said rod is actuable to shift said piston into said cylinder.
Claim 4
Dependent Claim
26 words
A packaged syringe construction according to claim 2, in combination with interfitting snap formations on said rod and sheath removably retaining the former on the latter.
Claim 5
Dependent Claim
26 words
A packaged syringe construction according to claim 1, in combination with a frangible seal retaining said end closure on said shield, for positive indication of tampering.
Claim 6
Dependent Claim
42 words
A packaged syringe construction according to claim 1, said sheath being engageable with said needle mount on inward sheath movement to effect said impaling, and said finger means being flexible radially outwardly in the absence of said shield for inward sheath movement.
Claim 7
Dependent Claim
35 words
A packaged syringe construction according to claim 1, said shield shoulder retaining said shield against withdrawal toward said one cylinder end, and said end closure retaining said shield against withdrawal towaRd said other cylinder end.
Claim 8
Dependent Claim
68 words
A packaged syringe construction according to claim 1, said finger means being arranged about and defining a resiliently distensible skirt on said sheath enlargement and abuttingly engageable with said cylinder to limit sheath movement and expansile for additional sheath movement to shift said needle to its use position, said skirt being closely circumposed by said shield to prevent expansion of said skirt without prior removal of said shield.
Claim 9
Dependent Claim
27 words
A packaged syringe construction according to claim 1, said sheath being of flexible material permitting of flexure to break an enclosed needle and render the syringe useless.
Claim 10
Dependent Claim
48 words
A packaged syringe construction according to claim 1, in combination with a tubular end fitting affixed to said other cylinder end and carrying said needle mount, said end fitting being formed with a circumferential weakening adapted to be deliberately severed to destroy said syringe and render it useless.
Claim 11
Dependent Claim
32 words
A packaged syringe construction according to claim 1, in combination with a retaining extension on said closure in abutting engagement with said piston to limit outward movement of the latter during autoclaving.
Claim 12
Dependent Claim
34 words
A packaged syringe construction according to claim 1, in combination with frictional means on said shield engaging said cylinder to retain the latter in position during interfitting of said rod and piston fastener elements.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |