US4007732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for location and removal of soft tissue in human biopsy operations
Assignee: Individual
•
Filing: 1975-09-02
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Granted: 1977-02-15
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Expires: 1995-09-02
Abstract
Abstract X-ray techniques are used to detect early evidence of breast cancer. When such evidence is found, a target is implanted in the suspect area while the patient is being x-rayed. The target has an attached line which leads from the target out through the skin of the patient. A biopsy is made with a cutting tool guided on the line attached to the target, thereby obtaining a biopsy specimen accurately centered on the suspect area.
Inventors
- 👤 Robert Carl Kvavle
- 👤 William Chester Awe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:59
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
83 words
A method of location and removal of a biopsy specimen comprising: locating evidence of early cancer by radiography techniques, positioning and implanting an x-ray opaque target in the suspect area as the patient is subject to x-ray examination, extending a locating means from said target outwardly to and through the skin surface, mounting and guiding a cutting means on said locating means, rotating said cutting means to cut a biopsy specimen, and cutting and detaching the bottom of said specimen with a knife.
Claim 2
Independent Claim
83 words
A method of location and removal of a biopsy specimen comprising: locating evidence of early cancer by radiography techniques, positioning and implanting an x-ray opaque target in the suspect area as the patient is subject to x-ray examination, extending a locating means from said target outwardly to and through the skin surface, mounting and guiding a cutting means on said locating means, rotating said cutting means to cut a biopsy specimen, and cutting and detaching the bottom of said specimen with a knife.
Claim 3
Dependent Claim
39 words
The method of claim 1 wherein said target and surrounding tissue are pulled into said cutting means by applying force to said locating means while rotating said cutting means until said target abuts a stop within said cutting means.
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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |