Patent US5595186A successfully refreshed from Google Patents.
US5595186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone marrow biopsy needle
Assignee: International Medical Technologies Corp
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Filing: 1995-03-08
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Granted: 1997-01-21
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Expires: 2015-03-08
Abstract
Abstract A bone marrow biopsy needle includes an outer tube having a lumen extending therethrough which narrows at the distal end of the outer tube. An inner tube is slidable through the lumen of the outer tube and includes a pair of pincers at its distal end. As the inner tube is slid through the lumen of the outer tube, the pincers will encounter the narrowed portion of the lumen and as the pincers extend beyond an opening at the distal end of the outer tube, the pincers close upon themselves, and in this manner the pincers can grasp a biopsy core from bone marrow of a patient. The pincers may have sharpened edges and/or have their edges bent radially inwardly so as to enhance the cutting of the biopsy core from the bone marrow.
Inventors
- 👤 Alan Rubinstein
- 👤 Andrew M. Olah
- 👤 Emery Olah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:10
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/025; A61B10/0266; A61B2010/0258; A61B17/00; A61B17/32; A61B17/320016; A61B2017/32004
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
153 words
A bone marrow biopsy needle for removing bone marrow from a patient, comprising in combination: an outer tube member having a lumen therein, a proximal end and a distal end and an opening at said distal end, said lumen narrows proximate to the opening; and an inner tube member adapted to be slidable in said lumen of said outer tube member, said inner tube member having pincers at a distal end thereof, said pincers capable of being slidable in said outer tube member, said pincers capable of closing by flexing relative to said inner tube it and said inner tube slide in the direction from the proximal end to the distal end of said outer tube and engage the narrowed lumen proximate to said opening of said outer tube member, and thereby said pincers being adaptable to grasp a biopsy core when said needle is inserted into the bone marrow of a patient.
Claim 2
Dependent Claim
153 words
A bone marrow biopsy needle for removing bone marrow from a patient, comprising in combination: an outer tube member having a lumen therein, a proximal end and a distal end and an opening at said distal end, said lumen narrows proximate to the opening; and an inner tube member adapted to be slidable in said lumen of said outer tube member, said inner tube member having pincers at a distal end thereof, said pincers capable of being slidable in said outer tube member, said pincers capable of closing by flexing relative to said inner tube it and said inner tube slide in the direction from the proximal end to the distal end of said outer tube and engage the narrowed lumen proximate to said opening of said outer tube member, and thereby said pincers being adaptable to grasp a biopsy core when said needle is inserted into the bone marrow of a patient.
Claim 3
Dependent Claim
22 words
A bone marrow biopsy needle as in claim 1, wherein said pincers include two opposed blades being tapered at their distal ends.
Claim 4
Dependent Claim
16 words
A bone marrow biopsy needle as in claim 1, wherein said pincers being tweezer-like in structure.
Claim 5
Dependent Claim
34 words
A bone marrow biopsy needle as in claim 1, wherein said pincers has sharp edges, and thereby being capable of enhancing the cutting of a biopsy core from the bone marrow of a patient.
Claim 6
Dependent Claim
36 words
A bone marrow biopsy need as in claim 1, wherein said pincers have edges being bent radially inwardly, and thereby capable of enhancing the cutting of a biopsy core from the bone marrow of a patient.
Claim 7
Dependent Claim
20 words
A bone marrow biopsy needle as in claim 1, wherein the distal end of said outer tube member being tapered.
Claim 8
Dependent Claim
21 words
A bone marrow biopsy need as in claim 1, wherein said inner tube member and said pincers being unitary in structure.
Claim 9
Dependent Claim
50 words
A bone marrow biopsy needle as in claim 1, wherein along an axis of the inner tube member, said pincers being narrower than the remaining portion of said inner tube member so as to be able to pass through the narrowed position of said lumen of said outer tube member.
Claim 10
Dependent Claim
18 words
A bone marrow biopsy needle as in claim 1, wherein said inner tube member having a lumen therethrough.
Claim 11
Dependent Claim
79 words
A method of removing a biopsy core of a patient using said bone marrow biopsy needle of claim 1, comprising the steps of: inserting said outer tube and said inner tube into a patient; grasping with said pincers of said inner tube a biopsy core of bone marrow; closing said pincers about said biopsy core of bone marrow by sliding said pincers through the narrowed lumen of said outer tube; and cutting off said biopsy core of bone marrow.
Claim 12
Dependent Claim
39 words
A method of removing a biopsy core of bone marrow as in claim 10, further comprising the steps of: rotating said outer tube and said inner tube to ensure the cutting off of said biopsy core of bone marrow.
Claim 13
Dependent Claim
46 words
A bone marrow biopsy needle as in claim 1, wherein said pincers are capable of closing as it extends from said opening of the outer tube member, and said pincers are capable of grasping a biopsy core forward of said distal end said outer tube member.
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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) | 2000-01-21 | 2000-07-22 | 2001-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-21 | 2004-07-22 | 2005-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-21 | 2008-07-22 | 2009-01-21 | $7700.00 | Window Closed / Lapsed |