US3993079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for percutaneous paracentesis, injection, drainage and catheterization
Assignee: Individual
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Filing: 1975-11-28
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Granted: 1976-11-23
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Expires: 1995-11-28
Abstract
Abstract A device for percutaneous paracentesis, injection, drainage and catheterization comprising a hypodermic needle having means for attachment to a syringe, with a central body portion having a reference mark and a smaller diameter leading end portion extending therefrom, its end terminating in a cutting bevel and a trocar adapted to surround the central body portion of the needle and capable of sliding thereon using it as a guide, having a graduated scale related to the overall length of the needle and having its end also terminating in a cutting bevel.
Inventors
- 👤 Carlos Alberto Henriques de Gatztanondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:58
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/065; A61B; A61B17/00; A61B17/34; A61B17/3417; A61M5/00; A61M5/178; A61M5/31; A61M5/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
256 words
A device for percutaneous paracentesis, injection, drainage and catheterization, of the type comprising a hypodermic needle having a connecting portion at one end for attachment to a syringe, wherein said hypodermic needle has a central body portion extending from said connecting portion and having a reference mark, a leading end portion serving as continuation of said central body portion, said leading end portion being of smaller diameter than said central body portion and terminating in a sharp cutting bevel and surrounded by a trocar being slightly shorter in length than said needle central body portion and having an internal diameter slightly larger than the external diameter of said central body portion and having a connecting portion at one end for attachment to said connecting portion of said needle and being terminated at its other or leading end in a bevel which is not as sharp as said needle bevelled end, and having an external cutting edge and an internal blunt edge, and having a graduated scale rising in value from said leading end towards said one end, said scale being related to the total length of said needle, so that when said needle is inserted in said trocar, with the latter mounted around said needle central body portion, the trocar is movable lengthwise toward the leading end of said needle, so that when the leading ends of said needle and said trocar are mutually aligned, said reference mark on said needle central body portion is located at the level of the rear edge of the trocar.
Claim 2
Independent Claim
256 words
A device for percutaneous paracentesis, injection, drainage and catheterization, of the type comprising a hypodermic needle having a connecting portion at one end for attachment to a syringe, wherein said hypodermic needle has a central body portion extending from said connecting portion and having a reference mark, a leading end portion serving as continuation of said central body portion, said leading end portion being of smaller diameter than said central body portion and terminating in a sharp cutting bevel and surrounded by a trocar being slightly shorter in length than said needle central body portion and having an internal diameter slightly larger than the external diameter of said central body portion and having a connecting portion at one end for attachment to said connecting portion of said needle and being terminated at its other or leading end in a bevel which is not as sharp as said needle bevelled end, and having an external cutting edge and an internal blunt edge, and having a graduated scale rising in value from said leading end towards said one end, said scale being related to the total length of said needle, so that when said needle is inserted in said trocar, with the latter mounted around said needle central body portion, the trocar is movable lengthwise toward the leading end of said needle, so that when the leading ends of said needle and said trocar are mutually aligned, said reference mark on said needle central body portion is located at the level of the rear edge of the trocar.
Claim 3
Dependent Claim
23 words
The device of claim 1, wherein the connecting portions of said needle and said trocar are standardized for attachment to conventional syringe pitches.
Claim 4
Dependent Claim
17 words
The device of claim 1, wherein the connecting portions of said needle and said trocar are threaded.
Claim 5
Dependent Claim
23 words
The device of claim 1, wherein the connecting portions of said needle and said trocar have lugs or wings for facilitating their handling.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |