US3739779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypodermic syringe and needle construction
Assignee: MEDICAL ELECTROSCIENCE AND PHARM
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Filing: 1970-04-28
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Granted: 1973-06-19
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Expires: 1990-04-28
Abstract
Abstract A hypodermic syringe and needle construction comprising threaded actuating means mounted on the end of a syringe ampule and adapted to provide a mechanical advantage for piercing a needle and needle holder unit through a piercable end closure. In another facet of the invention, a ball-type closure is provided in a disposable ampule unit, the unit including threaded actuating means on the distal end of the ampule for moving the needle holder to dislodge the ball in the closure and permit fluid communication between the contents of the ampule and the lumen of the needle. A non-coring, discrete needle and holder construction, adapted to be stored as a separate unit from a syringe or ampule, has a hypodermic needle provided with solid piercing means extending beyond the lumen of the needle for initially piercing the end closure of an ampule without producing a coring action, facilitating passage of the lumen of the needle through the pierced closure without creating a core, the needle holder being adapted to substantially rigidly, sealingly engage the discharge end of a syringe or ampule.
Inventors
- 👤 F Pfleger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:06
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/28; A61M5/285; A61M5/288; A61M5/31; A61M5/32; A61M5/3202; A61M5/329; A61M5/3291
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
208 words
A non-coring disposable hypodermic syringe comprising, a tubular body for holding fluids and having a first end and a second end, a movable plunger capabLe of being moved into said body and sealing said first end, a piercable end closure sealing said second end of said body, a needle holder with a non-coring hollow needle secured therein, said needle holder adapted to telescopically fit onto said second end of said body when the hypodermic syringe is assembled, said needle having an inner end adapted to protrude through said piercable end closure when the syringe is assembled and an outer end projecting outwardly of said needle holder, said hollow needle permitting fluid communication between the fluid within the tubular body and the otuer end of the needle for administering injectable fluids to humans or animals, said needle further including a piercing element secured to said needle between said inner end and said needle holder, said piercing element projecting longitudinally beyond said inner end of said needle and adapted to prepierce said piercable end closure so as to prevent a core cut from the piercable end closure from obstructing the passage of fluid through said needle when said needle holder is fitted onto said second end of said tubular body.
Claim 2
Dependent Claim
208 words
A non-coring disposable hypodermic syringe comprising, a tubular body for holding fluids and having a first end and a second end, a movable plunger capabLe of being moved into said body and sealing said first end, a piercable end closure sealing said second end of said body, a needle holder with a non-coring hollow needle secured therein, said needle holder adapted to telescopically fit onto said second end of said body when the hypodermic syringe is assembled, said needle having an inner end adapted to protrude through said piercable end closure when the syringe is assembled and an outer end projecting outwardly of said needle holder, said hollow needle permitting fluid communication between the fluid within the tubular body and the otuer end of the needle for administering injectable fluids to humans or animals, said needle further including a piercing element secured to said needle between said inner end and said needle holder, said piercing element projecting longitudinally beyond said inner end of said needle and adapted to prepierce said piercable end closure so as to prevent a core cut from the piercable end closure from obstructing the passage of fluid through said needle when said needle holder is fitted onto said second end of said tubular body.
Claim 3
Dependent Claim
16 words
A non-coring disposable hypodermic syringe according to claim 1 wherein said piercing element is substantially planar.
Claim 4
Dependent Claim
16 words
A non-coring disposable hypodermic syringe according to claim 1 wherein said piercing element is substantially semi-circular.
Claim 5
Dependent Claim
53 words
A non-coring disposable hypodermic syringe according to claim 1 including a retainer cap to secure said piercable end closure to said body, a ring on said needle holder adaptable to said retainer cap wherein said piercing element is guided to pierce said piercable end closure on sliding said ring onto said retainer cap.
Claim 6
Dependent Claim
58 words
A non-coring disposable hypodermic syringe according to claim 1, including a retainer cap to secure said piercable end closure to said body, a threaded surface on said retainer cap, a matching threaded surface on said needle holder wherein rotation of said needle holder on said cap provides the rotational and axial movement to pierce said piercable end closure.
References Cited (Backward Citations)
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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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |