US4512768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analgesic syringe
Assignee: Individual
•
Filing: 1983-02-15
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Granted: 1985-04-23
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Expires: 2003-02-15
Abstract
Abstract A syringe article, for analgesic puncture with twin needles, the syringe containing a thin walled plastic reservoir filled with local anesthetic mounted under a collapsible roof and located at the distal end of the syringe barrel adjacent the twin needles, so that depression of the syringe plunger compresses sharp projections against the reservoir which is then ruptured to release the local anesthetic for injection into the flesh which will be punctured, the local anesthetic being passed through pores in the wall of an outer positioned needle into the patient's flesh.
Inventors
- 👤 Avvari Rangaswamy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:58
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/28; A61M5/285; A61M5/286; A61M5/19; A61M5/284; A61M5/31; A61M5/32; A61M2005/1787; A61M2005/3201; A61M5/3145; A61M5/329; A61M5/3291; A61M5/3295; A61M5/3297; A61M5/42; A61M5/422
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
90 words
A syringe, comprising: means for releasing a first pharmaceutical into a porous needle as said porous needle is being inserted in a patient, and said porous needle being in fixed adjacent proximity with a continuous walled cannula or needle through which (1) a second pharmaceutical can be passed or (2) fluids can be withdrawn from the patient; whereby said first pharmaceutical is infused substantially uniformly into the patient along the length of the inserted porous needle and therefore into the region which said continuous walled cannula or needle is passed.
Claim 2
Dependent Claim
90 words
A syringe, comprising: means for releasing a first pharmaceutical into a porous needle as said porous needle is being inserted in a patient, and said porous needle being in fixed adjacent proximity with a continuous walled cannula or needle through which (1) a second pharmaceutical can be passed or (2) fluids can be withdrawn from the patient; whereby said first pharmaceutical is infused substantially uniformly into the patient along the length of the inserted porous needle and therefore into the region which said continuous walled cannula or needle is passed.
Claim 3
Dependent Claim
63 words
A syringe as set forth in claim 1 in which said continuous walled cannula or needle is contained within said porous needle so that a fluid can be dispensed through the end and pores of said porous needle, and a separate fluid can be dispensed through the end of said continuous walled cannula or needle, or fluids can be withdrawn from the patient.
Claim 4
Dependent Claim
65 words
A syringe as set forth in claim 1 in which said continuous walled cannula or needle is abuttingly fixed longitudinally to said porous needle so that a fluid can be dispensed through the end and pores of said porous needle, and a separate fluid can be dispensed, or fluids can be withdrawn from the patient, through the end of said continuous walled cannula or needle.
Claim 5
Dependent Claim
43 words
A syringe as set forth in claim 1 in which said first pharmaceutical is contained in a hermetically sealed reservoir, which reservoir can be ruptured by means activated by depressing the syringe plunger so that said first pharmaceutical flows into said porous needle.
Claim 6
Dependent Claim
31 words
A syringe as set forth in claim 4 in which said first pharmaceutical flows from said ruptured reservoir through a filter and one way valve prior to entering said porous needle.
References Cited (Backward Citations)
US2564977A
Cited
FR1142769A
Cited
US3530492A
Cited
US3547119A
Cited
US3749084A
Cited
US4040420A
Cited
US4306554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |