US6228039B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy device
Assignee: Olympus Corp
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Filing: 1999-11-03
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Granted: 2001-05-08
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Expires: 2019-11-03
Abstract
Abstract The invention relates to a device for performing endoscopic guided fine needle biopsy, in which the needle is automatically controlled by using a pre-biased needle. Upon release of a spring, the needle projects toward tissue, overcoming frictional forces, thanks to high acceleration. This reduces the danger of breaking the needle.
Inventors
- 👤 Kenneth F. Binmoeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:59
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/04; A61B1/00; A61B1/012; A61B1/018; A61B17/00; A61B17/34; A61B17/3403; A61B10/0045; A61B2010/0208; A61B2010/045; A61B17/22; A61B2017/22072; A61B2017/22074; A61B2017/22077; A61B90/00; A61B90/06; A61B2090/062
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
A tissue sampling device adapted for use in an endoscope, said device comprising: a hollow needle surrounded by an outer sheath; pre-biasing means for pre-biasing the hollow needle forward in an axial direction of the tissue-sampling device; release means for causing the pre-biased hollow needle to be released so that the hollow needle is projected forward in the axial direction of the tissue-sampling device at a high velocity; and an attachment arranged to fix the tissue-sampling device at an inlet port of a needle passage of the endoscope.
Claim 2
Dependent Claim
88 words
A tissue sampling device adapted for use in an endoscope, said device comprising: a hollow needle surrounded by an outer sheath; pre-biasing means for pre-biasing the hollow needle forward in an axial direction of the tissue-sampling device; release means for causing the pre-biased hollow needle to be released so that the hollow needle is projected forward in the axial direction of the tissue-sampling device at a high velocity; and an attachment arranged to fix the tissue-sampling device at an inlet port of a needle passage of the endoscope.
Claim 3
Dependent Claim
27 words
A device according to claim 1 , wherein the pre-biasing means comprises an outer sleeve adapted to enable adjustment of an exposed portion of the outer sheath.
Claim 4
Dependent Claim
33 words
A device according to claim 1 , wherein the pre-biasing means comprises a calibrating sleeve adapted to enable precise adjustment of a depth of insertion of the hollow needle into a tissue sample.
Claim 5
Dependent Claim
44 words
A device according to claim 1 , wherein the pre-biasing means comprises a spring that is connectable to and disconnectable from the hollow needle, and wherein when the spring is disconnected from the hollow needle, the hollow needle is adapted to be manually controlled.
Claim 6
Dependent Claim
14 words
A device according to claim 4 , wherein the spring is a coil spring.
Claim 7
Dependent Claim
21 words
A device according to claim 1 , wherein the hollow needle comprises a distal end portion that is treated by sand-blasting.
Claim 8
Dependent Claim
46 words
A device according to claim 1 , wherein the hollow needle comprises a distal end portion that protrudes past a distal end portion of the outer sheath surrounding the hollow needle when the hollow needle is projected forward in the axial direction of the tissue-sampling device.
Claim 9
Dependent Claim
25 words
A device according to claim 7 , wherein the outer sheath is movable in a needle passage of the endoscope independently of the hollow needle.
Claim 10
Dependent Claim
17 words
A device according to claim 1 , wherein the device is adapted for used in an echo-endoscope.
Claim 11
Dependent Claim
14 words
A device according to claim 1 , wherein said attachment comprises a screw attachment.
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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) | 2004-05-07 | 2004-11-06 | 2005-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-05-07 | 2008-11-06 | 2009-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-05-07 | 2012-11-06 | 2013-05-08 | $7700.00 | Window Closed / Lapsed |