Patent US2207539A successfully refreshed from Google Patents.
Patent US5449001A successfully refreshed from Google Patents.
US5449001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy needle
Assignee: Individual
•
Filing: 1994-04-14
•
Granted: 1995-09-12
•
Expires: 2014-04-14
Abstract
Abstract A biopsy needle including a stylet with a tissue collection notch formed in the shaft. The tissue collection notch is shaped in the form of a section of a circle in order to maximize the size of the tissue collected and to maximize the ability of the stylet to resist bending.
Inventors
- 👤 Richard A. Terwilliger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
36 words
A stylet comprising: a shaft; a tissue collection notch formed in the shaft; said tissue collection notch shaped in cross-section in the form of a section of a circle whose included angle is less than 180°.
Claim 2
Dependent Claim
36 words
A stylet comprising: a shaft; a tissue collection notch formed in the shaft; said tissue collection notch shaped in cross-section in the form of a section of a circle whose included angle is less than 180°.
Claim 3
Dependent Claim
16 words
The stylet of claim 1 wherein: said sector describes an angle that is about ninety degrees.
Claim 4
Dependent Claim
36 words
The stylet of claim 1 wherein: said stylet has a diameter and said sector has an apex and wherein said apex is on the other side of a diametric line from the remainder of the sector.
Claim 5
Dependent Claim
10 words
The stylet of claim 3 wherein: said apex is flat.
Claim 6
Dependent Claim
17 words
The stylet of claim 1 wherein: said sector of a circle is shaped like an I beam.
Claim 7
Dependent Claim
60 words
A replacement needle set for a biopsy instrument including: a stylet; said stylet having: a shaft; a tissue collection notch formed in the shaft; said tissue collection notch shaped in cross-section in the form of a sector of a circle whose included angle is less than 180°; wherein said needle set is adapted to be secured to a biopsy instrument.
Claim 8
Dependent Claim
60 words
A replacement needle set for a biopsy instrument including: a stylet; said stylet having: a shaft; a tissue collection notch formed in the shaft; said tissue collection notch shaped in cross-section in the form of a sector of a circle whose included angle is less than 180°; wherein said needle set is adapted to be secured to a biopsy instrument.
Claim 9
Dependent Claim
49 words
The replacement needle set of claim 6 including: a cannula; said cannula is positioned about said stylet and adapted to be secured to a biopsy instrument so that the instrument can move the cannula relative to the stylet in order to capture tissue in the notch of the stylet.
Claim 10
Dependent Claim
28 words
A stylet comprising: a shaft; a tissue collection notch formed in the shaft; said tissue collection notch in cross-section having a thinner portion upstanding from a broader base.
Claim 11
Dependent Claim
28 words
A stylet comprising: a shaft; a tissue collection notch formed in the shaft; said tissue collection notch in cross-section having a thinner portion upstanding from a broader base.
Claim 12
Dependent Claim
16 words
The stylet of claim 8 wherein: said thinner portion is in the form of a rail.
Claim 13
Dependent Claim
21 words
The stylet of claim 8 wherein: said broader base is formed along a segment of the outer periphery of the stylet.
Claim 14
Dependent Claim
22 words
The stylet of claim 8 wherein: said thinner portion is connected to the broader base by a central portion that curves inwardly.
Claim 15
Dependent Claim
28 words
The stylet of claim 8 wherein: said stylet has a diameter and said thinner portion is located on the other side of the diameter from the broader base.
References Cited (Backward Citations)
DE141108C
Cited
EP0010321A1
Cited
WO1983003313A1
Cited
US4600014A
Cited
US4776346A
Cited
US4747414A
Cited
US4817631A
Cited
US4699154A
Cited
SU1551362A1
Cited
US4924878A
Cited
US5025797A
Cited
US4958625A
Cited
USRE34056E
Cited
US5183052A
Cited
US5188118A
Cited
US5282476A
Cited
US5220926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-11 | 1999-03-13 | 1999-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-11 | 2003-03-13 | 2003-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-11 | 2007-03-13 | 2007-09-12 | $7700.00 | Window Closed / Lapsed |