Patent US3682174A successfully refreshed from Google Patents.
US3682174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Syringe for injection of freshly mixed liquid-powder
Assignee: Individual
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Filing: 1969-10-07
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Granted: 1972-08-08
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Expires: 1989-10-07
Abstract
Abstract A syringe formed a rearward tubular member adapted to contain a liquid carrier and a forward tubular member adapted to contain a dry medicant to be taken up with the carrier for injection whereby the materials are freshly mixed immediately prior to injection and wherein the dry medicant and liquid carrier are separately maintained in sealed relation within their respective tubular members until admixed immediately prior to injection, a covered hypodermic needle is mounted onto the forward tubular member in position to penetrate the forward end of that tubular member in response to removal of the needle cup.
Inventors
- 👤 Milton J Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:37
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00593; A; A61; A61M; A61M5/00; A61M5/178; A61M5/28; A61M5/284; A61M5/31; A61M5/315; A61M5/31596; A61M5/32; A61M5/285; A61M5/286; A61M5/288; A61M5/31598
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
In a syringe assembly including forward and rearward hollow tubular members wherein the rear member is adapted to be telescoped within the forward member, means at the rearward end portions of each of said members adapted to serve as finger grips, and means sealing the forward ends thereof, the fOrward a medicament and a carrier in the form of a liquid respectively, whereby actuation of said piston plug will force liquid axially through said rear tubular member causing the slit in said sealing ring to open thereby permitting the liquid to travel through said neck, bend the flexible disc such that the peripheral apertures are spaced forwardly from the forward face of the neck flange thereby permitting said liquid carrier to enter said forward tubular member and mix with the medicament therein, and whereby subsequent movement of the rear tubular member will cause ejection of the mixed medicament through said hollow needle.
Claim 2
Dependent Claim
152 words
In a syringe assembly including forward and rearward hollow tubular members wherein the rear member is adapted to be telescoped within the forward member, means at the rearward end portions of each of said members adapted to serve as finger grips, and means sealing the forward ends thereof, the fOrward a medicament and a carrier in the form of a liquid respectively, whereby actuation of said piston plug will force liquid axially through said rear tubular member causing the slit in said sealing ring to open thereby permitting the liquid to travel through said neck, bend the flexible disc such that the peripheral apertures are spaced forwardly from the forward face of the neck flange thereby permitting said liquid carrier to enter said forward tubular member and mix with the medicament therein, and whereby subsequent movement of the rear tubular member will cause ejection of the mixed medicament through said hollow needle.
Claim 3
Dependent Claim
54 words
A syringe assembly as claimed in claim 1 in which the flexible closure on the forward end of the rear tubular member comprises ring members of rubber-like material in sealing engagement with the outer wall of the inner tubular member and extending into sealing engagement with the inner wall of the outer tubular member.
Claim 4
Dependent Claim
21 words
A syringe assembly as claimed in claim 1 in which the flexible closure and aperture disc member are of unitary construction.
Claim 5
Dependent Claim
41 words
A syringe assembly as claimed in claim 1 in which the sealing ring within the inner tubular member is formed of rubber-like material having circular ribs dimensioned to extend into sealing engagement with the inner walls of the inner tubular member.
Claim 6
Dependent Claim
32 words
A syringe assembly as claimed in claim 1 which includes flanged members extending radially outwardly from the rearward end portions of the forward and rearward tubular members for use as finger grips.
Claim 7
Dependent Claim
33 words
A syringe assembly as claimed in claim 1 in which the sealing ring comprises a disc member having a central body portion and rim portions of greater thickness than the central body portion.
Claim 8
Dependent Claim
35 words
A syringe assembly as claimed in claim 1 in which the sealing ring comprises a pair of axially spaced rim portions, a tubular portion joining said rim portions and said disc spanning the tubular portion.
References Cited (Backward Citations)
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US2869543A
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US3091240A
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US3076456A
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US3303846A
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US3401693A
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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) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |