US7988643B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy needle for the histological examination of body tissue
Assignee: LTS Lohmann Therapie Systeme AG
•
Filing: 2006-01-19
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Granted: 2011-08-02
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Expires: 2026-01-19
Abstract
Abstract The invention relates to a biopsy needle for obtaining material for histological examination of body tissue, in particular, of bone marrow, or for the isolation, culture and modification of body cells, comprising a cannula with a cutting edge and a manual turning handle and a stylet running in the cannula. At the end of the cannula is an internal thread and preferably an outer thread. An easily visible marking is preferably provided on the manual turning handle. On withdrawing the biopsy needle the biopsy sample is thus held in position in the cannula and the advancing is precisely controllable.
Inventors
- 👤 Hans-Rainer Hoffmann
- 👤 Rudolf Matusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:04
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/025
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
179 words
A biopsy needle for obtaining material for histological examination of body tissue, composed of a cannula with a manual turning handle and of a stylet guided in the cannula, the cannula being provided with a shaped cutting edge at a cannula end, characterized in that the cannula end additionally has an area of threads including an inner thread arranged on an inside of the cannula end and an outer thread arranged on an outside of the cannula end, that the inner and outer threads have a pitch and the pitch of the inner and outer threads are matched, that the area of the threads has a wall thickness, wherein the wall thickness is constant, that the cannula has an outer circumference and the outer thread has an externa diameter where the external diameter of the outer thread does not exceed the outer circumference of the cannula, and that the cannula has an inner circumference and the inner thread has an internal diameter where the internal diameter of the inner thread does not exceed the inner circumference of the cannula.
Claim 2
Dependent Claim
179 words
A biopsy needle for obtaining material for histological examination of body tissue, composed of a cannula with a manual turning handle and of a stylet guided in the cannula, the cannula being provided with a shaped cutting edge at a cannula end, characterized in that the cannula end additionally has an area of threads including an inner thread arranged on an inside of the cannula end and an outer thread arranged on an outside of the cannula end, that the inner and outer threads have a pitch and the pitch of the inner and outer threads are matched, that the area of the threads has a wall thickness, wherein the wall thickness is constant, that the cannula has an outer circumference and the outer thread has an externa diameter where the external diameter of the outer thread does not exceed the outer circumference of the cannula, and that the cannula has an inner circumference and the inner thread has an internal diameter where the internal diameter of the inner thread does not exceed the inner circumference of the cannula.
Claim 3
Dependent Claim
24 words
The biopsy needle as claimed in claim 1 characterized in that the threads have a single helix, a multiple helix or a double helix.
Claim 4
Dependent Claim
21 words
The biopsy needle as claimed in claim 1 characterized in that the inner and outer thread is a metric ISO thread.
Claim 5
Dependent Claim
36 words
The biopsy needle as claimed in claim 3 , characterized in that the inner and outer threads have dimensions of outer M4×1 and inner M3×1, outer M4×0.5 and inner M3×0.5, or outer M3×0.5 and inner M2×0.5.
Claim 6
Dependent Claim
23 words
The biopsy needle as claimed in claim 1 characterized in that the cannula is shaped conically in a front area of the cannula.
Claim 7
Dependent Claim
18 words
The biopsy needle as claimed in claim 1 characterized in that the end of the cannula is beveled.
Claim 8
Dependent Claim
22 words
The biopsy needle as claimed in claim 1 characterized in that the cutting edge of the cannula has a wave-shaped ground surface.
Claim 9
Dependent Claim
25 words
The biopsy needle as claimed in claim 1 characterized in that the cannula is made of metal, or of a material compatible with magnetic resonance.
Claim 10
Dependent Claim
33 words
The biopsy needle as claimed in claim 1 characterized in that the stylet guided in the cannula has a trocar ground surface or a wedge-shaped ground surface at a tip of the needle.
Claim 11
Dependent Claim
23 words
The biopsy needle as claimed in claim 1 characterized in that the manual turning handle is provided with a marking for controlled advance.
Claim 12
Dependent Claim
79 words
A method for obtaining sample material for histological examination of body tissue, characterized in that a biopsy needle as claimed in claim 1 , with inserted stylet, is introduced percutaneously into an area for examination, the stylet is removed after a few rotations of the stylet, the biopsy needle is inserted by rotary movement sufficiently far into the area for examination, the biopsy needle with the sample material is withdrawn, and the sample material is removed from the cannula.
Claim 13
Dependent Claim
33 words
A method for obtaining material for histological examination of body tissue or for isolation, culture and modification of body cells which comprises inserting the biopsy needle of claim 1 into the body tissue.
Claim 14
Dependent Claim
14 words
The biopsy needle of claim 1 , wherein the body tissue is bone marrow.
Claim 15
Dependent Claim
14 words
The biopsy needle of claim 2 , wherein the threads are overground or rolled.
Claim 16
Dependent Claim
14 words
The biopsy needle of claim 8 , wherein the cannula is made of metal.
Claim 17
Dependent Claim
17 words
The biopsy needle of claim 8 , wherein the cannula is made of titanium, nickel/titanium or carbon.
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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) | 2014-08-01 | 2015-01-31 | 2015-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2018-08-01 | 2019-01-31 | 2019-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2022-08-01 | 2023-01-31 | 2023-08-02 | $7700.00 | Window Closed / Lapsed |