US4581015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multimedication syringe
Assignee: Individual
•
Filing: 1984-05-10
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Granted: 1986-04-08
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Expires: 2004-05-10
Abstract
Abstract A multimedication syringe for temporary storage and injection of at least two fluid substances comprising a hollow tubular housing having a generally cylindrical wall, an open rear end and a generally tapered partially closed front end defining a discharge passage; a plunger including a portion sized for moving axially within the housing through substantially the entire length thereof, the portion including a plug surrounding the portion for engaging the inner surface of the housing in a fluid-tight manner, the plunger for forcing fluid in the housing out the discharge passage when the plunger is moved axially within the housing from the open end toward the discharge passage; and a resealable tube in the wall of the housing for transmitting fluid into the housing.
Inventors
- 👤 C. Michael Alfano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/3129; A61M39/00; A61M39/02; A61M39/04; A61M5/1782; A61M5/20; A61M5/204; A61M5/3137
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A multimedication syringe for temporary storage and injection of at least two fluid substances comprising: a hollow tubular housing having a cylindrical wall, an open rear end and a tapered partially closed front end defining a discharge passage; a plunger including a portion sized for moving axially within said housing through substantially the entire length thereof, said portion including sealing means surrounding said portion for engaging the inner surface of said housing in a fluid-tight manner, said plunger for forcing fluid in said housing out said discharge passage when said plunger is moved axially within said housing from said open end toward said discharge passage; and resealable port means in said wall of said housing for transmitting fluid into said housing.
Claim 2
Dependent Claim
121 words
A multimedication syringe for temporary storage and injection of at least two fluid substances comprising: a hollow tubular housing having a cylindrical wall, an open rear end and a tapered partially closed front end defining a discharge passage; a plunger including a portion sized for moving axially within said housing through substantially the entire length thereof, said portion including sealing means surrounding said portion for engaging the inner surface of said housing in a fluid-tight manner, said plunger for forcing fluid in said housing out said discharge passage when said plunger is moved axially within said housing from said open end toward said discharge passage; and resealable port means in said wall of said housing for transmitting fluid into said housing.
Claim 3
Dependent Claim
15 words
The multimedication syringe of claim 1 also including removable means for sealing said discharge passage.
Claim 4
Dependent Claim
19 words
The multimedication syringe of claim 2 wherein said removable means includes a cap for tightly surrounding said discharge passage.
Claim 5
Dependent Claim
36 words
The multimedication syringe of claim 3 wherein said port means includes a tube having a resilient self-sealing membrane therein, said tube being mounted to said housing for allowing insertion of a syringe needle through said membrane.
Claim 6
Dependent Claim
37 words
The multimedication syringe of claim 4 wherein said plunger includes a flattened end for manually depressing said plunger, and said sealing means includes a cylindrical plug having ridges thereon for engaging said inner surface of said housing.
Claim 7
Dependent Claim
27 words
The multimedication syringe of claim 5 wherein said plunger includes an enlarged portion having a pair of legs thereon for supporting said syringe on a flat surface.
Claim 8
Dependent Claim
34 words
The multimedication syringe of claim 6 wherein said tube is positioned on said housing for allowing said plug to seal the open end of said housing without interference with fluid transmission through said tube.
Claim 9
Independent Claim
93 words
A method of administering medicines in a single dose without contamination of the supplies of said medicines comprising the steps of: drawing a first medicine into a first syringe from a supply thereof through the discharge passage of said first syringe; drawing a second medicine from a supply thereof into a second syringe through the discharge passage thereof; injecting said second medicine into said first syringe through a resealable port in the wall of said first syringe; and injecting said multiple medicines into a patient through the discharge passage of said first syringe.
Claim 10
Independent Claim
93 words
A method of administering medicines in a single dose without contamination of the supplies of said medicines comprising the steps of: drawing a first medicine into a first syringe from a supply thereof through the discharge passage of said first syringe; drawing a second medicine from a supply thereof into a second syringe through the discharge passage thereof; injecting said second medicine into said first syringe through a resealable port in the wall of said first syringe; and injecting said multiple medicines into a patient through the discharge passage of said first syringe.
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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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |