Patent US5394886A successfully refreshed from Google Patents.
US5394886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin biopsy plug and method
Assignee: Individual
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Filing: 1993-09-20
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Granted: 1995-03-07
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Expires: 2013-09-20
Abstract
Abstract A plug and method for controlling bleeding and repairing a circular wound caused by the excising of a specimen of skin from a patient with a biopsy punch. The plug is a cylindrical porous sponge made from a gelatin material which, when implanted into a wound, swells, absorbs blood and is completely absorbed by the patient with little tissue reaction. By completely filling the bleeding site, the plug promotes healing without the necessity of suturing. In the first aspect of the invention, a sterile cylindrical plug is provided having about the same diameter as the biopsy punch used for excising the specimen. In a second aspect of the invention, after a specimen has been excised with a biopsy punch, the cylindrical plug is cut from a pad of the gelatin material with the same punch and implanted into the wound.
Inventors
- 👤 Hossein Nabai
- 👤 Homayoon Rahbari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:29
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/0057; A61B10/00; A61B10/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
70 words
The combination of a circular biopsy punch having a thin sharp cylindrical blade ranging in diameter from about two to six millimeters for excising a skin specimen from a patient and a thin cylindrical plug having about the same diameter as said punch for controlling bleeding and repairing a wound caused by the excising of said specimen, said plug being implanted into said wound after said excising of said specimen.
Claim 2
Dependent Claim
70 words
The combination of a circular biopsy punch having a thin sharp cylindrical blade ranging in diameter from about two to six millimeters for excising a skin specimen from a patient and a thin cylindrical plug having about the same diameter as said punch for controlling bleeding and repairing a wound caused by the excising of said specimen, said plug being implanted into said wound after said excising of said specimen.
Claim 3
Dependent Claim
31 words
The combination as recited in claim 1 wherein said plug is made from a material which, when implanted into said wound, swells, absorbs blood and is absorbed completely by said patient.
Claim 4
Dependent Claim
21 words
The plug as recited in claim 1 wherein said sponge is a porous and pliable product made from purified pork skin.
Claim 5
Independent Claim
79 words
A method for controlling bleeding and repairing a circular wound caused by the excising of a specimen of skin from a patient with a circular biopsy punch of about two to six millimeters in diameter comprising the step of implanting into said wound a thin cylindrical plug made from porous sponge of a gelatin material of about two to six millimeters in diameter which, when implanted into said wound, swells, absorbs blood and is completely absorbed by said patient.
Claim 6
Independent Claim
79 words
A method for controlling bleeding and repairing a circular wound caused by the excising of a specimen of skin from a patient with a circular biopsy punch of about two to six millimeters in diameter comprising the step of implanting into said wound a thin cylindrical plug made from porous sponge of a gelatin material of about two to six millimeters in diameter which, when implanted into said wound, swells, absorbs blood and is completely absorbed by said patient.
Claim 7
Independent Claim
93 words
A method for controlling bleeding and repairing a wound caused by the excising of a specimen of skin of about two to six millimeters in diameter from a patient with a circular biopsy punch comprising the step of cutting with a biopsy punch of about two to six millimeters in diameter a cylindrical plug from a porous sponge pad of a gelatin material which, when implanted into said wound, swells, absorbs and is completely absorbed by said patient; and implanting said cylindrical plug into said wound caused by said excising of said specimen.
Claim 8
Independent Claim
93 words
A method for controlling bleeding and repairing a wound caused by the excising of a specimen of skin of about two to six millimeters in diameter from a patient with a circular biopsy punch comprising the step of cutting with a biopsy punch of about two to six millimeters in diameter a cylindrical plug from a porous sponge pad of a gelatin material which, when implanted into said wound, swells, absorbs and is completely absorbed by said patient; and implanting said cylindrical plug into said wound caused by said excising of said specimen.
Claim 9
Dependent Claim
30 words
The method recited in claim 5 further comprising the step of applying pressure to said sponge for thirty to sixty seconds after said sponge has been implanted into said wound.
Claim 10
Dependent Claim
30 words
The method recited in claim 5 further comprising the step of applying a topical antibiotic ointment to said sponge and the area surrounding said sponge after bleeding has been controlled.
Claim 11
Dependent Claim
25 words
The method recited in claim 7 further comprising the step of applying a dressing over said excised area after said topical ointment has been applied.
Claim 12
Dependent Claim
35 words
The method recited in claim 8 further comprising the steps of removing said dressing and cleaning said excised area twice a day with rubbing alcohol or a hydrogen peroxide solution until healing has been completed.
References Cited (Backward Citations)
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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) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |