US5387203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subcutaneous extractor
Assignee: Individual
•
Filing: 1993-06-28
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Granted: 1995-02-07
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Expires: 2013-06-28
Abstract
Abstract A device for extracting pus, blood and other materials from beneath the skin. The device is made of a clear plastic tube open at both ends (10). One end is placed over the skin which has material to be extracted. The other end contains a plunger device (16) which creates a vacuum in the tube when it is withdrawn from the tube. As the vacuum pressure increases, the skin and underlying material are drawn into the tube until it is penetrated by a recessed piercing device (14) which is attached to an extrusion (12) approximately in the center of the tube (10). After being pierced, the underlying material is drawn from beneath the skin to the surface.
Inventors
- 👤 Hubert J. Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:12
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/64; A61M1/67; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/32093; A61B2017/00743; A61B2017/00747; A61B17/30; A61B2017/306
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
221 words
A device for removing pus, blood and other materials from in and beneath the skin comprising: (a) a housing of sufficient thickness and strength so that it does not collapse when a partial vacuum is created in the housing and has an opening at the bottom, and (b) a means for creating variable negative pressure in the housing, said means capable of creating negative pressure of sufficient strength to draw skin into the housing through the bottom opening (c) a piercing means fixedly secured within the housing with said piercing means recessed above the bottom opening of said vacuum chamber approximately in the center, said piercing means recessed from the bottom opening such that skin drawn into the housing can be pierced by a fine point or edge of the piercing means such that the skin is stretched to the extent that damage done to the skin by the piercing means is minimized whereby an operator of said device can place the bottom opening of said housing over skin which has material to be removed underneath and by controlling the negative pressure the operator can increase the vacuum pressure to draw the underlying skin into said housing where the skin is pierced by said piercing means and the material to be removed from beneath the skin is extracted into said housing.
Claim 2
Independent Claim
221 words
A device for removing pus, blood and other materials from in and beneath the skin comprising: (a) a housing of sufficient thickness and strength so that it does not collapse when a partial vacuum is created in the housing and has an opening at the bottom, and (b) a means for creating variable negative pressure in the housing, said means capable of creating negative pressure of sufficient strength to draw skin into the housing through the bottom opening (c) a piercing means fixedly secured within the housing with said piercing means recessed above the bottom opening of said vacuum chamber approximately in the center, said piercing means recessed from the bottom opening such that skin drawn into the housing can be pierced by a fine point or edge of the piercing means such that the skin is stretched to the extent that damage done to the skin by the piercing means is minimized whereby an operator of said device can place the bottom opening of said housing over skin which has material to be removed underneath and by controlling the negative pressure the operator can increase the vacuum pressure to draw the underlying skin into said housing where the skin is pierced by said piercing means and the material to be removed from beneath the skin is extracted into said housing.
Claim 3
Dependent Claim
69 words
The device of claim 1 wherein said housing being made of a clear material whereby the operator can directly observe the extraction of the material to be removed and therefore can control the strength of negative pressure to apply a minimum amount of vacuum pressure necessary for said piercing means to pierce the skin and underlying tissue to a minimum depth necessary to extract the material to be removed.
References Cited (Backward Citations)
US1221103A
Cited
FR670171A
Cited
US2360051A
Cited
US3068868A
Cited
DE1238616B
Cited
US3623475A
Cited
US3683922A
Cited
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Cited
US3896810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-02-06 | 1998-08-08 | 1999-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-06 | 2002-08-08 | 2003-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-06 | 2006-08-08 | 2007-02-07 | $7700.00 | Window Closed / Lapsed |