US5224488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biopsy needle with extendable cutting means
Assignee: Individual
•
Filing: 1992-08-31
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Granted: 1993-07-06
•
Expires: 2012-08-31
Abstract
Abstract A biopsy needle having a strip of material carried within the hollow of the needle that can be extended through a lateral opening in the needle to cut and direct the sample tissue into the needle interior. Pushing on one of the ends of the strip extends it through the lateral opening as the second end is held firm. A twist is formed in the needle so that only one edge extends through the opening and the flat side of the strip guides or directs the severed sample into the needle. Turning a screw in the handle of the needle causes the end of the strip to be pushed and the strip itself to flex through the opening.
Inventors
- 👤 Francis H. Neuffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:55
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61B17/320783
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
81 words
A device for obtaining and securing a sample of tissue, said device comprising: a hollow tube having a lateral opening and an axis; means carried within said tube for cutting said tissue; means for extending at least a portion of said cutting means through said lateral opening so that, when said cutting means is extended and said device is rotated about said axis of said hollow tube, said cutting means cuts said sample and directs said sample into said hollow tube.
Claim 2
Independent Claim
81 words
A device for obtaining and securing a sample of tissue, said device comprising: a hollow tube having a lateral opening and an axis; means carried within said tube for cutting said tissue; means for extending at least a portion of said cutting means through said lateral opening so that, when said cutting means is extended and said device is rotated about said axis of said hollow tube, said cutting means cuts said sample and directs said sample into said hollow tube.
Claim 3
Dependent Claim
18 words
The device as recited in claim 1, wherein said cutting means further comprises a strip of flexible material.
Claim 4
Dependent Claim
18 words
The device as recited in claim 1, wherein said cutting means further comprises a strip of resilient material.
Claim 5
Dependent Claim
53 words
The device as recited in claim 1, wherein said cutting means further comprises a strip of flexible material having a first edge and a second edge, said first edge extending farther from said axis toward said opening than said second edge of said strip when said strip is extended by said extending means.
Claim 6
Dependent Claim
52 words
The device as recited in claim 1, wherein said cutting means further comprises a strip of material having a proximal end and a distal end, and a first edge and a second edge, said extending means flexing said strip through said lateral opening by moving said proximal end toward said distal end.
Claim 7
Dependent Claim
79 words
The device as recited in claim 1, wherein said cutting means further comprises a strip of material having a proximal end and a distal end, and a first edge and a second edge, said distal end being fixed within said hollow tube, and said extending means further comprises means for advancing said proximal end of said strip toward said distal end thereby flexing said strip so that said first edge extends through said opening but not said second edge.
Claim 8
Dependent Claim
96 words
The device as recited in claim 1, further comprising a handle and wherein said cutting means further comprises a strip of material having a proximal end and a distal end, said distal end being fixed within said hollow tube, and said extending means further comprises a screw in operational connection with said proximal end of said strip to push said proximal end toward said distal end as said screw is turned thereby pushing said proximal end toward said distal end of said strip so that at least a portion of said strip extends through said opening.
Claim 9
Independent Claim
134 words
A device for obtaining and securing a sample of tissue, said device comprising: a handle; a hollow tube attached to said handle and having a lateral opening and an axis; a strip of material carried within said tube, said strip having a proximal end and distal end, and a first edge and a second edge, said distal end attached to said tube; and means carried by said handle for pushing said proximal end of said strip so that said strip flexes toward said lateral opening, said strip having means formed therein for extending said first edge farther from said axis than said second edge, said strip cutting said tissue to form said sample and directing said sample into said hollow tube as said device is rotated, said sample being secured inside said hollow tube.
Claim 10
Independent Claim
134 words
A device for obtaining and securing a sample of tissue, said device comprising: a handle; a hollow tube attached to said handle and having a lateral opening and an axis; a strip of material carried within said tube, said strip having a proximal end and distal end, and a first edge and a second edge, said distal end attached to said tube; and means carried by said handle for pushing said proximal end of said strip so that said strip flexes toward said lateral opening, said strip having means formed therein for extending said first edge farther from said axis than said second edge, said strip cutting said tissue to form said sample and directing said sample into said hollow tube as said device is rotated, said sample being secured inside said hollow tube.
Claim 11
Dependent Claim
44 words
The device as recited in claim 8, wherein said extending means further comprises a twist formed in said strip, said twist formed so that, when said strip is extended through said opening, said first edge extends farther from said axis than said second edge.
Claim 12
Dependent Claim
69 words
The device as recited in claim 8, wherein said extending means further comprises a twist formed in said strip, said twist formed so that, when said strip is pushed by said pushing means, said first edge extends farther from said axis than said second edge and said first edge cuts said tissue and said strip directs said tissue into said tube through said opening as said device is turned.
Claim 13
Dependent Claim
40 words
The device as recited in claim 8, wherein said pushing means further comprises a screw in operational connection with said proximal end for flexing said strip so that said first edge extends through said opening when said screw is turned.
Claim 14
Dependent Claim
12 words
The device as recited in claim 8, wherein said material is resilient.
Claim 15
Dependent Claim
37 words
The device as recited in claim 8, wherein said lateral opening is in the shape of a rectangle having a major dimension and a minor dimension, said major dimension being aligned with said axis of said tube.
Claim 16
Independent Claim
109 words
A method for taking a biopsy sample of tissue, said method comprising the steps of: inserting a hollow needle having a lateral opening into said tissue; flexing a strip of material through said opening, said strip having a first edge and a second edge and a twist formed therein so that said first edge flexes through said opening but not said second edge; rotating said needle so that said first edge cuts said tissue sample and said strip directs said sample into said hollow needle; drawing said first edge through said opening into said hollow needle; and withdrawing said needle from said tissue, said sample secured inside said needle.
Claim 17
Independent Claim
109 words
A method for taking a biopsy sample of tissue, said method comprising the steps of: inserting a hollow needle having a lateral opening into said tissue; flexing a strip of material through said opening, said strip having a first edge and a second edge and a twist formed therein so that said first edge flexes through said opening but not said second edge; rotating said needle so that said first edge cuts said tissue sample and said strip directs said sample into said hollow needle; drawing said first edge through said opening into said hollow needle; and withdrawing said needle from said tissue, said sample secured inside said needle.
Claim 18
Dependent Claim
24 words
The method as recited in claim 14, wherein said rotating step further comprises the step of rotating said needle not more than approximately 180°.
Claim 19
Dependent Claim
21 words
The method as recited in claim 14, wherein said strip is flexed by pushing said proximal end toward said distal end.
Claim 20
Dependent Claim
49 words
The method as recited in claim 14, wherein a screw is in operational connection with said proximal end of said strip and said flexing step further comprises turning said screw so that said screw advances toward said proximal end whereby said proximal end is pushed toward said distal end.
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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) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |