Patent US6890308B2 successfully refreshed from Google Patents.
US6890308B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone marrow biopsy needle
Assignee: Individual
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Filing: 2003-06-03
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Granted: 2005-05-10
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Expires: 2023-06-03
Abstract
Abstract A needle for use in taking a bone marrow biopsy comprises a hollow tube having a front end portion formed to a reduced diameter by swaging. The front end is tapered by means of a number of circumferentially-spaced facets, forming a cutting edge. A tapering transition portion, between the main portion of the hollow tube and its reduced-diameter front end portion, is formed with a series of flutes which help in the needle cutting through the cortical bone. A spacer is provided for use in pushing the sample rearwardly out of the hollow tube, the spacer having a through-passage through which a trocar needle is passed and serving for accurate alignment of the distal ends of the hollow tube and trocar needle.
Inventors
- 👤 Abul Bashar Mohammed Anwarul Islam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:01
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/025; A61B2010/0258; A61B90/00; A61B90/03; A61B2090/033; A61B2090/034
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
176 words
A needle for taking a bone marrow biopsy, comprising: a hollow tube having a main portion and a front end portion, with said front end portion being of a reduced diameter, both internally and externally, when compared with said main portion, wherein a distal end of said front end portion, remote from said main portion, has a multifaceted cutting edge, and a proximal end of said front end portion, in proximity to said main portion, has a tapering portion formed by swaging for providing a frustoconical transition between said front end portion and said main portion with an outer surface of said frustoconical transition including a series of flutes circumferentially around said tapering portion, wherein each flute of said series of flutes has a recess in the outer surface of said frustoconical transition bounded by two cutting surfaces running, at least, part way along a longitudinal axis of said tapering portion, said series of flutes providing a further cutting surface in addition to said multifaceted cutting edge at said distal end of said front end portion.
Claim 2
Dependent Claim
176 words
A needle for taking a bone marrow biopsy, comprising: a hollow tube having a main portion and a front end portion, with said front end portion being of a reduced diameter, both internally and externally, when compared with said main portion, wherein a distal end of said front end portion, remote from said main portion, has a multifaceted cutting edge, and a proximal end of said front end portion, in proximity to said main portion, has a tapering portion formed by swaging for providing a frustoconical transition between said front end portion and said main portion with an outer surface of said frustoconical transition including a series of flutes circumferentially around said tapering portion, wherein each flute of said series of flutes has a recess in the outer surface of said frustoconical transition bounded by two cutting surfaces running, at least, part way along a longitudinal axis of said tapering portion, said series of flutes providing a further cutting surface in addition to said multifaceted cutting edge at said distal end of said front end portion.
Claim 3
Dependent Claim
44 words
The needle for taking a bone marrow biopsy according to claim 1 , wherein said distal end of said front end portion of said hollow tube is tapered via a series of facets, spaced apart, circumferentially around said distal end of said hollow tube.
Claim 4
Dependent Claim
220 words
A biopsy needle assembly, comprising: a needle for taking a bone marrow biopsy, said needle comprising: a hollow tube having a main portion and a front end portion, with said front end portion being of a reduced diameter, both internally and externally, when compared with said main portion, wherein a distal end of said front end portion, remote from said main portion, has a multifaceted cutting edge, and a proximal end of said front end portion, in proximity to said main portion, has a tapering portion for providing a frustoconical transition between said front end portion and said main portion with an outer surface of said frustoconical transition including a series of flutes circumferentially around said tapering portion, wherein each flute of said series of flutes has a recess in the outer surface of said frustoconical transition bounded by two cutting surfaces running, at least, part way along a longitudinal axis of said tapering portion, said series of flutes providing a further cutting surface in addition to said multifaceted cutting edge at said distal end of said front end portion; and, a trocar needle inserted into said hollow tube of said needle from a rear end of said hollow tube, so that a pointed front end of said trocar needle projects from said front end portion of said hollow tube.
Claim 5
Dependent Claim
220 words
A biopsy needle assembly, comprising: a needle for taking a bone marrow biopsy, said needle comprising: a hollow tube having a main portion and a front end portion, with said front end portion being of a reduced diameter, both internally and externally, when compared with said main portion, wherein a distal end of said front end portion, remote from said main portion, has a multifaceted cutting edge, and a proximal end of said front end portion, in proximity to said main portion, has a tapering portion for providing a frustoconical transition between said front end portion and said main portion with an outer surface of said frustoconical transition including a series of flutes circumferentially around said tapering portion, wherein each flute of said series of flutes has a recess in the outer surface of said frustoconical transition bounded by two cutting surfaces running, at least, part way along a longitudinal axis of said tapering portion, said series of flutes providing a further cutting surface in addition to said multifaceted cutting edge at said distal end of said front end portion; and, a trocar needle inserted into said hollow tube of said needle from a rear end of said hollow tube, so that a pointed front end of said trocar needle projects from said front end portion of said hollow tube.
Claim 6
Dependent Claim
54 words
The biopsy needle assembly according to claim 3 , further comprising: a handle mounted to said rear end of said hollow tube; a head mounted to a rear end of said trocar needle; and, a spacer disposed between said handle and said head, said spacer having a through-passage through which said trocar needle passes.
Claim 7
Dependent Claim
28 words
The biopsy needle assembly according to claim 4 , wherein said through-passage of said spacer has two ends and is funnel-shaped at each end of said two ends.
Claim 8
Dependent Claim
223 words
A biopsy needle assembly, comprising: a needle for taking a bone marrow biopsy, said needle comprising: a hollow tube having a main portion and a front end portion, with said front end portion being of a reduced diameter, both internally and externally, when compared with said main portion, wherein a distal end of said front end portion, remote from said main portion, has a multifaceted cutting edge, and a proximal end of said front end portion in proximity to said main portions, has a tapering portion formed by swaging for providing a frustoconical transition between said front end portion and said main portion with an outer surface of said frustoconical transition including a series of flutes circumferentially around said tapering portion, wherein each flute of said series of flutes has a recess in the outer surface of said frustoconical transition bounded by two cutting surfaces running, at least, part way along a longitudinal axis of said tapering portion, said series of flutes providing a further cutting surface in addition to said multi-faceted cutting edge at said distal end of said front end portion; and, a trocar needle inserted into said hollow tube of said needle from a rear end of said hollow tube, so that a pointed front end of said trocar needle projects from said front end portion of said hollow tube.
Claim 9
Dependent Claim
223 words
A biopsy needle assembly, comprising: a needle for taking a bone marrow biopsy, said needle comprising: a hollow tube having a main portion and a front end portion, with said front end portion being of a reduced diameter, both internally and externally, when compared with said main portion, wherein a distal end of said front end portion, remote from said main portion, has a multifaceted cutting edge, and a proximal end of said front end portion in proximity to said main portions, has a tapering portion formed by swaging for providing a frustoconical transition between said front end portion and said main portion with an outer surface of said frustoconical transition including a series of flutes circumferentially around said tapering portion, wherein each flute of said series of flutes has a recess in the outer surface of said frustoconical transition bounded by two cutting surfaces running, at least, part way along a longitudinal axis of said tapering portion, said series of flutes providing a further cutting surface in addition to said multi-faceted cutting edge at said distal end of said front end portion; and, a trocar needle inserted into said hollow tube of said needle from a rear end of said hollow tube, so that a pointed front end of said trocar needle projects from said front end portion of said hollow tube.
Claim 10
Dependent Claim
54 words
The biopsy needle assembly according to claim 6 , further comprising: a handle mounted to said rear end of said hollow tube; a head mounted to a rear end of said trocar needle; and, a spacer disposed between said handle and said head, said spacer having a through-passage through which said trocar needle passes.
Claim 11
Dependent Claim
28 words
The biopsy needle assembly according to claim 7 , wherein said through-passage of said spacer has two ends and is funnel-shaped at each end of said two ends.
Claim 12
Independent Claim
145 words
A method of forming a needle for taking a bone marrow biopsy, comprising the steps of: providing a hollow tube; swaging a front end portion of said hollow tube to a reduced diameter, internally and externally, over a length of said front end portion for forming a frustoconical transition between said front end portion and an adjacent portion of said hollow tube; forming a series of flutes, spaced apart, circumferentially around said hollow tube in an outer surface of said frustoconical transition of said hollow tube such that said series of flutes forms a first cutting surface of the needle; and, tapering said front end portion of said hollow tube by forming a series of facets in an outer surface of said hollow tube, spaced apart, circumferentially around said hollow tube such that said series of facets forms a second cutting surface of the needle.
Claim 13
Independent Claim
145 words
A method of forming a needle for taking a bone marrow biopsy, comprising the steps of: providing a hollow tube; swaging a front end portion of said hollow tube to a reduced diameter, internally and externally, over a length of said front end portion for forming a frustoconical transition between said front end portion and an adjacent portion of said hollow tube; forming a series of flutes, spaced apart, circumferentially around said hollow tube in an outer surface of said frustoconical transition of said hollow tube such that said series of flutes forms a first cutting surface of the needle; and, tapering said front end portion of said hollow tube by forming a series of facets in an outer surface of said hollow tube, spaced apart, circumferentially around said hollow tube such that said series of facets forms a second cutting surface of the needle.
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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) | 2008-05-09 | 2008-11-08 | 2009-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-05-09 | 2012-11-08 | 2013-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-05-09 | 2016-11-08 | 2017-05-10 | $7700.00 | Window Closed / Lapsed |