Patent US5333619A successfully refreshed from Google Patents.
US5333619A
Expired / Lapsed
US
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Method for rigid tissue biopsy
Assignee: Individual
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Filing: 1993-08-09
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Granted: 1994-08-02
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Expires: 2013-08-09
Abstract
Abstract The present invention relates to a method for obtaining a biopsy from rigid tissue using a needle with a tapered end and a plate insertable into the needle to fit between the needle and tissue within the needle. The needle is then rotated to obtain a biopsy specimen.
Inventors
- 👤 Vito L. Burgio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:41
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/025; A61B2010/0258
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A method for obtaining a biopsy of rigid tissue comprising the steps of: inserting a needle into the rigid tissue such that said needle contains a biopsy in a distal end, said needle being tapered at said distal end; inserting a plate into a proximal end of said needle, said plate having a thinness suitable for fitting between an internal surface of said needle and an external surface of said biopsy; passing said plate along an internal surface of a tapered portion of said needle until the plate pushes the biopsy against an opposite internal surface of said needle; and rotating said needle until said biopsy is separated from said rigid tissue.
Claim 2
Independent Claim
112 words
A method for obtaining a biopsy of rigid tissue comprising the steps of: inserting a needle into the rigid tissue such that said needle contains a biopsy in a distal end, said needle being tapered at said distal end; inserting a plate into a proximal end of said needle, said plate having a thinness suitable for fitting between an internal surface of said needle and an external surface of said biopsy; passing said plate along an internal surface of a tapered portion of said needle until the plate pushes the biopsy against an opposite internal surface of said needle; and rotating said needle until said biopsy is separated from said rigid tissue.
Claim 3
Dependent Claim
33 words
The method of claim 1, further comprising the step of: forming said plate so as to have a curvature less than a radius of said needle and a circumference of less than 360°.
Claim 4
Dependent Claim
42 words
The method of claim 2, said step of forming further comprising: forming said plate such that said plate has a width equal to approximately a third of a transverse section of said needle, said plate having a length greater than said biopsy.
Claim 5
Dependent Claim
36 words
The method of claim 2, said step of forming further comprising: affixing said plate to a handle, said handle extending outwardly of a proximal end of said needle when said plate is pushed through said needle.
Claim 6
Dependent Claim
37 words
The method of claim 4, said step of forming further comprising: marking a reference point on a surface of said handle, said reference point being indicative of a limit of travel of said plate within said needle.
Claim 7
Dependent Claim
28 words
The method of claim 5, said step of passing comprising: passing said plate into said needle until said reference point aligns with said proximal end of said needle.
Claim 8
Dependent Claim
31 words
The method of claim 1, said step of passing comprising: pushing said plate until said plate causes said rigid tissue to be flush against said opposite internal surface of said needle.
Claim 9
Dependent Claim
28 words
The method of claim 1, said step of rotating comprising: rotating said needle through a plurality of rotations in the same direction about an axis of said needle.
Claim 10
Dependent Claim
25 words
The method of claim 8, said step of rotating further comprising: separating said biopsy from said rigid tissue at said distal end of said needle.
Claim 11
Dependent Claim
27 words
The method of claim 1, further comprising the steps of: extracting said needle and said plate from said rigid tissue; and removing said biopsy from said needle.
Claim 12
Dependent Claim
33 words
The method of claim 10, said step of removing comprising: pulling said plate from said needle through said proximal end of said needle, said biopsy remaining within a concave surface of said plate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |