US3645268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable, presterilized, self-locating and piercing evacuator with ejector tube
Assignee: Individual
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Filing: 1969-12-10
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Granted: 1972-02-29
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Expires: 1989-12-10
Abstract
Abstract The present invention is a simple, inexpensive and consequently disposable, self-piercing and locating combination evacuator and ejector tube which can be encased in a sheath, presterilized ready for use, and includes a spearhead-type body with spaced cutting edges diverging from a pointed top rearwardly, and with a shoulder or flange spaced beyond the rear limits of said cutting edges, with a reduced portion therebetween so that when the device is used to pierce a membrance such as an eardrum, skin or other body portion, such skin or membrane will be disposed in such reduced portion with the handle or ejector tube removed, and the device left in the incision until healing has occurred, whereupon it can be readily removed. Thus the evacuator is of a construction to have superior holding qualities, to provide minimum interference with nature''s healing, and is of a composition readily recognizable as suitable for implantation in the human body.
Inventors
- 👤 Dagoberto Capote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:00
CPC Classifications
A; A61; A61F; A61F11/00; A61F11/20; A61F11/202
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
An evacuator for insertion in living tissue to drain fluids therefrom, said evacuator comprising a hollow elongated body, stop means at one end of said body to substantially prevent overinsertion in the tissue, a tapered generally conical portion at the opposite end of said body and terminating in a penetrating point remote from said stop means, a reduced diameter portion connecting said conical portion to said stop means, and said body having an axial bore extending from the end adjacent said stop means and communicating with the surface of said conical portion through an opening on said surface to provide a passageway substantially through said body so that fluids from the tissue can flow through said passageway and drain from said body, whereby axial movement of said evacuator in the direction of the tapered portion pierces the living tissue and continued axial movement imbeds said conical portion within the tissue and said stop means resists overinsertion of the evacuator into the tissue.
Claim 2
Dependent Claim
162 words
An evacuator for insertion in living tissue to drain fluids therefrom, said evacuator comprising a hollow elongated body, stop means at one end of said body to substantially prevent overinsertion in the tissue, a tapered generally conical portion at the opposite end of said body and terminating in a penetrating point remote from said stop means, a reduced diameter portion connecting said conical portion to said stop means, and said body having an axial bore extending from the end adjacent said stop means and communicating with the surface of said conical portion through an opening on said surface to provide a passageway substantially through said body so that fluids from the tissue can flow through said passageway and drain from said body, whereby axial movement of said evacuator in the direction of the tapered portion pierces the living tissue and continued axial movement imbeds said conical portion within the tissue and said stop means resists overinsertion of the evacuator into the tissue.
Claim 3
Dependent Claim
32 words
The structure of claim 1 including a plurality of cutting edges located along said generally conical portion and extending from said penetrating point to a position adjacent to said reduced diameter portion.
Claim 4
Dependent Claim
279 words
The combination of an evacuator for insertion in living tissue to drain fluids therefrom and an instrument for inserting the evacuator into the tissue, said evacuator comprising a hollow elongated body, stop means at one end of said body, a tapered generally conical portion at the opposite end of said body and terminating in a penetrating point remote from said stop means, a reduced diameter portion located between said conical portion and said stop means, said body having an axial bore extending from the end adjacent said stop means and communicating with the surface of said conical portion through an opening on said surface to provide a passageway substantially through said body so that fluids from the tissue can flow through said passageway and drain from said body, said instrument comprising an elongated sleeve, rod means axially slidably mounted within said sleeve, said rod means having a reduced portion at one end, said reduced portion normally extending outwardly of one end of said sleeve and frictionally engaging the bore of said evacuator, the opposite end of said rod means extending outwardly from the opposite end of said sleeve, resilient means connecting the opposite end of said rod means to the opposite end of said sleeve and adapted to urge the stop means of said evacuator into engagement with said one end of said sleeve, whereby axial movement of said sleeve in one direction causes said evacuator to penetrate the tissue after which said rod means can be moved in the opposite direction to cause the reduced portion of said rod means to be withdrawn from the bore of said evacuator while said sleeve prevents axial movement of said evacuator.
Claim 5
Dependent Claim
279 words
The combination of an evacuator for insertion in living tissue to drain fluids therefrom and an instrument for inserting the evacuator into the tissue, said evacuator comprising a hollow elongated body, stop means at one end of said body, a tapered generally conical portion at the opposite end of said body and terminating in a penetrating point remote from said stop means, a reduced diameter portion located between said conical portion and said stop means, said body having an axial bore extending from the end adjacent said stop means and communicating with the surface of said conical portion through an opening on said surface to provide a passageway substantially through said body so that fluids from the tissue can flow through said passageway and drain from said body, said instrument comprising an elongated sleeve, rod means axially slidably mounted within said sleeve, said rod means having a reduced portion at one end, said reduced portion normally extending outwardly of one end of said sleeve and frictionally engaging the bore of said evacuator, the opposite end of said rod means extending outwardly from the opposite end of said sleeve, resilient means connecting the opposite end of said rod means to the opposite end of said sleeve and adapted to urge the stop means of said evacuator into engagement with said one end of said sleeve, whereby axial movement of said sleeve in one direction causes said evacuator to penetrate the tissue after which said rod means can be moved in the opposite direction to cause the reduced portion of said rod means to be withdrawn from the bore of said evacuator while said sleeve prevents axial movement of said evacuator.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |