US6361504B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy needle, method for fabricating, and apparatus for operating the same
Assignee: Individual
•
Filing: 1998-03-31
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Granted: 2002-03-26
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Expires: 2018-03-31
Abstract
Abstract The present invention provides a hollow tubular shaped biopsy needle having a hollow elliptical cross section shaped lumen therethrough, and the method for fabricating the needle and the apparatus for operating the needle. The structure of the biopsy needle of this invention is simple and easy to fabricate, and thus the production cost can be reduced. In comparison of the smaller diameter of this invented biopsy needle to the diameter of the other biopsy needles, the size of the extracted sample will be bigger and wounds of the patient can be less. The apparatus of this invention will help to reduce the operating force during extracting tissue samples, and helps rotation and straight movements of the needle.
Inventors
- 👤 Myoung Chul Shin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/151; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
61 words
A hollow tubular shaped biopsy needle with a hollow elliptical cross section, comprising: a proximal end where manipulating means is applied; and a tapered distal end relative to a longitudinal direction, said distal end being inwardly beveled wherein an inner circumferential portion of said distal end is inwardly beveled, and an outer circumferential portion of said distal end is outwardly beveled.
Claim 2
Dependent Claim
61 words
A hollow tubular shaped biopsy needle with a hollow elliptical cross section, comprising: a proximal end where manipulating means is applied; and a tapered distal end relative to a longitudinal direction, said distal end being inwardly beveled wherein an inner circumferential portion of said distal end is inwardly beveled, and an outer circumferential portion of said distal end is outwardly beveled.
Claim 3
Dependent Claim
22 words
The biopsy needle according to claim 1 , wherein said needle increases in diameter from said distal end to said proximal end.
Claim 4
Independent Claim
101 words
A method for manufacturing a biopsy needle with an inwardly beveled leading edge, comprising: a step of providing a hollow tube; a step of drawing the tube so that the tube has a hollow elliptical cross section; a step of cutting the tube so that the tube has a predetermined length; a step of inserting a solid member having a tapered leading edge into the tube in order to enlarge an elliptically shaped hollow end of the tube; and a step of cutting the hollow end of the tube that was enlarged so that the tube has a uniform outer diameter.
Claim 5
Independent Claim
101 words
A method for manufacturing a biopsy needle with an inwardly beveled leading edge, comprising: a step of providing a hollow tube; a step of drawing the tube so that the tube has a hollow elliptical cross section; a step of cutting the tube so that the tube has a predetermined length; a step of inserting a solid member having a tapered leading edge into the tube in order to enlarge an elliptically shaped hollow end of the tube; and a step of cutting the hollow end of the tube that was enlarged so that the tube has a uniform outer diameter.
Claim 6
Dependent Claim
62 words
The method for manufacturing a biopsy needle with an inwardly beveled leading edge according to claim 3 , further comprising: a step of inserting the tube into a hollow frame having same a similar taper angle before the step of inserting a solid member; and a step of withdrawing the tube from the frame after the step of inserting a solid member.
Claim 7
Independent Claim
122 words
An apparatus for operating a biopsy needle with an elliptical hollow cross section, comprising: acting means for mounting said needle, moving straight and rotating; driving means for providing elasticity for the straight movement and the rotational movement; and handling means for controlling said driving means, p 2 wherein said acting means comprises a piston having a cap for mounting said needle, and said driving means comprises guiding means surrounding a circumferential surface of said piston for guiding the straight movement and the rotational movement of said piston, and an elastic member located in said guiding means, and said handling means comprises a stopper, a plurality of fixing recesses disposed in a predetermined interval in said guiding means for temporarily fixing said stopper.
Claim 8
Independent Claim
122 words
An apparatus for operating a biopsy needle with an elliptical hollow cross section, comprising: acting means for mounting said needle, moving straight and rotating; driving means for providing elasticity for the straight movement and the rotational movement; and handling means for controlling said driving means, p 2 wherein said acting means comprises a piston having a cap for mounting said needle, and said driving means comprises guiding means surrounding a circumferential surface of said piston for guiding the straight movement and the rotational movement of said piston, and an elastic member located in said guiding means, and said handling means comprises a stopper, a plurality of fixing recesses disposed in a predetermined interval in said guiding means for temporarily fixing said stopper.
Claim 9
Dependent Claim
45 words
The apparatus for operating a biopsy needle with an elliptical hollow cross section according to claim 5 , wherein said guiding means comprises an inner case and a guiding member screwed to said inner case, said plurality of recesses are formed in said inner case.
Claim 10
Dependent Claim
26 words
The apparatus for operating a biopsy needle with an elliptical hollow cross section according to claim 5 , wherein said elastic member is a compression spring.
Claim 11
Dependent Claim
90 words
The apparatus for operating a biopsy needle with an elliptical hollow cross section according to claim 5 , wherein said driving means comprises a first elastic means for driving a straight movement of said piston and a second elastic means for driving a rotational movement of said piston, said first elastic means experiences a translational elastic movement in an inner case near a handling portion of said piston, and said second elastic means is mounted slidably on to a circumferential surface of said piston and experiences a rotational elastic movement.
Claim 12
Dependent Claim
104 words
The apparatus for operating a biopsy needle with an elliptical hollow cross section according to claim 8 , wherein said second elastic means comprises a locker, splined to said piston, having a plurality of one way holes, a striker which has a plurality of fixing hooks with which mesh said plurality of one way holes of said locker, and which is stricken by a supporting portion of said piston, and which is incorporated to said piston to rotate freely, and a spring which is disposed between said locker and said striker to enable said holes of said locker to be engaged to said hooks.
Claim 13
Independent Claim
122 words
An apparatus for operating a biopsy needle with an elliptical hollow cross section, comprising: a cylinder having a first port and a second port for receiving compressed air, a third port, and a fourth port, said third and fourth ports communicating with each other; a rotation blade, which has a central hollow axis, driven by compression air passing from said third port to said fourth port; a piston, which is splined to said central hollow axis, for a straight movement and rotation movement in said cylinder; and a plate which is fixed to said piston, defines two separated chambers of said cylinder, and moves between said first port and said second port as said piston moves, thereby selectively opens said third port.
Claim 14
Independent Claim
122 words
An apparatus for operating a biopsy needle with an elliptical hollow cross section, comprising: a cylinder having a first port and a second port for receiving compressed air, a third port, and a fourth port, said third and fourth ports communicating with each other; a rotation blade, which has a central hollow axis, driven by compression air passing from said third port to said fourth port; a piston, which is splined to said central hollow axis, for a straight movement and rotation movement in said cylinder; and a plate which is fixed to said piston, defines two separated chambers of said cylinder, and moves between said first port and said second port as said piston moves, thereby selectively opens said third port.
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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) | 2005-03-25 | 2005-09-24 | 2006-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-03-25 | 2009-09-24 | 2010-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-03-25 | 2013-09-24 | 2014-03-26 | $7700.00 | Window Closed / Lapsed |