US5848978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical biopsy device
Assignee: Ivfonline [properly Ivfonlinecom Llc] LLC
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Filing: 1995-11-14
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Granted: 1998-12-15
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Expires: 2015-11-14
Abstract
Abstract A surgical core biopsy apparatus, having a hollow elongated member with an axis and a leading end, a sharpened edge at a portion of the leading end for cutting tissue along the axis, an actuator, and a cutting edge, linked to the actuator, being movable along a path including a transverse component to the axis, effective for severing tissue along an the path. The path is preferably an arcuate path, the cutting device being pivoted about an axis transverse to the axis of said hollow elongated member at said leading end. The actuator preferably acts by way of a compression force transmitted along the axis by a compression member, from a handle portion to the cutting edge. The elongated member is preferably a tube having two or more lumens, a first large centrally located lumen for accommodating a tissue core sample, and at least one other eccentrically located rectangular cross section lumen containing the compression member. The biopsy apparatus may be used, for example, to obtain a percutaneous excision breast biopsy from a tumor whose location is marked with a radiopaque guide wire.
Inventors
- 👤 Michael Cecchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:22
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/06; A61B17/00; A61B17/32; A61B17/320016; A61B2017/32004; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
127 words
A surgical biopsy apparatus comprising: a hollow elongated member, having an axis, and a distal end; a circular sleeve member disposed radially around an exterior surface of the hollow elongated member; a sharpened edge at a portion of said distal end for cutting tissue along said axis; an actuator; a sliding steel member connected to said actuator for extending towards the distal end upon actuation of the actuator; an arm having first and second ends, said first end connected to said actuator and said second end connected to said circular sleeve member; and a cutting edge, linked to said actuator, by said sliding steel member, said cutting edge being moveable along a path including a transverse component to said axis, effective for severing tissue along said path.
Claim 2
Dependent Claim
127 words
A surgical biopsy apparatus comprising: a hollow elongated member, having an axis, and a distal end; a circular sleeve member disposed radially around an exterior surface of the hollow elongated member; a sharpened edge at a portion of said distal end for cutting tissue along said axis; an actuator; a sliding steel member connected to said actuator for extending towards the distal end upon actuation of the actuator; an arm having first and second ends, said first end connected to said actuator and said second end connected to said circular sleeve member; and a cutting edge, linked to said actuator, by said sliding steel member, said cutting edge being moveable along a path including a transverse component to said axis, effective for severing tissue along said path.
Claim 3
Dependent Claim
36 words
The surgical biopsy apparatus according to claim 1, wherein said path is an arcuate path, said sharpened edge being pivoted about an axis near said distal end transverse to said axis of said hollow elongated member.
Claim 4
Dependent Claim
17 words
The surgical biopsy apparatus according to claim 1, further comprising means for localizing tissue to be biopsied.
Claim 5
Dependent Claim
17 words
The surgical biopsy apparatus according to claim 3, wherein said tissue localizing means is a guide wire.
Claim 6
Dependent Claim
15 words
The surgical biopsy apparatus according to claim 4, further comprising a guide wire centering device.
Claim 7
Dependent Claim
25 words
The surgical biopsy apparatus as claimed in claim 4 wherein said guide wire further includes a barbed retaining portion for extending into a tissue mass.
Claim 8
Dependent Claim
17 words
The surgical biopsy apparatus according to claim 3, wherein said tissue localizing means is a radiological apparatus.
Claim 9
Dependent Claim
21 words
The surgical biopsy apparatus according to claim 1, wherein said hollow elongated member is a tube having a round central lumen.
Claim 10
Dependent Claim
37 words
The surgical biopsy apparatus according to claim 1, wherein said hollow elongated member having at least two lumens, having a round central lumen and at least one eccentric lumen, each being smaller than said round central lumen.
Claim 11
Dependent Claim
22 words
The surgical biopsy apparatus according to claim 1, wherein said actuator causes a compression force to be transmitted to said cutting edge.
Claim 12
Dependent Claim
23 words
The surgical biopsy apparatus according to claim 9, wherein said actuator is mechanically linked to said cutting edge, to transmit said compression force.
Claim 13
Dependent Claim
27 words
The surgical biopsy apparatus according to claim 1, further comprising a tensile member for retracting a tissue core biopsy sample after being severed by said cutting edge.
Claim 14
Dependent Claim
21 words
The surgical biopsy apparatus according to claim 1, wherein said surgical biopsy apparatus is adapted for disposal after a single use.
Claim 15
Dependent Claim
40 words
The surgical biopsy apparatus according to claim 1, wherein said actuator communicates with said cutting edge by a method selected from the group consisting of mechanical tensile force, mechanical compressive force, mechanical torque, electric signal, pneumatic signal, and hydraulic signal.
Claim 16
Dependent Claim
42 words
The surgical biopsy apparatus according to claim 1, further comprising a guide wire locating member, and a system for ensuring that a tip of a guide wire located by said guide wire locating member is within a path of said cutting edge.
Claim 17
Dependent Claim
24 words
The surgical biopsy apparatus according to claim 1, wherein said cutting edge and said sharpened edge are formed from an integral sheet of metal.
Claim 18
Dependent Claim
32 words
The surgical biopsy apparatus according to claim 1, wherein said cutting edge is movable along said path by an extension integral with said cutting edge which travels within said hollow elongated member.
Claim 19
Dependent Claim
26 words
The surgical biopsy apparatus according to claim 17, wherein said integral extension is moved between a resting position and a severing position by a compressive force.
Claim 20
Dependent Claim
14 words
The surgical biopsy apparatus according to claim 1, further comprising an ergonomically adapted handle.
Claim 21
Dependent Claim
20 words
The surgical biopsy apparatus according to claim 19, wherein said actuator comprises a trigger affixed in proximity to said handle.
Claim 22
Dependent Claim
22 words
The surgical biopsy apparatus according to claim 1, wherein said sharpened edge includes a central lobe which tapers proximally on both sides.
Claim 23
Dependent Claim
14 words
The surgical biopsy apparatus according to claim 1, wherein said apparatus comprises radiotransparent materials.
Claim 24
Dependent Claim
22 words
The surgical biopsy apparatus according to claim 1, further comprising a unidirectional mechanism for actuating said cutting edge in a single direction.
Claim 25
Dependent Claim
100 words
A surgical biopsy apparatus comprising: a hollow elongated member, having an axis, and a distal end; a pair of sharpened edges at a portion of said distal end for cutting tissue along said axis; an actuator; and a pivot axis near said distal end; said actuator transmitting a signal to at least one of said sharpened edges, said signal causing said at least one sharpened edge to fold about said pivot axis toward said other sharpened edge, moving through an arcuate path, about said pivot axis, having a transverse component to said axis, effective for severing tissue along said path.
Claim 26
Dependent Claim
100 words
A surgical biopsy apparatus comprising: a hollow elongated member, having an axis, and a distal end; a pair of sharpened edges at a portion of said distal end for cutting tissue along said axis; an actuator; and a pivot axis near said distal end; said actuator transmitting a signal to at least one of said sharpened edges, said signal causing said at least one sharpened edge to fold about said pivot axis toward said other sharpened edge, moving through an arcuate path, about said pivot axis, having a transverse component to said axis, effective for severing tissue along said path.
Claim 27
Dependent Claim
143 words
A surgical method, comprising: identifying a tissue sample to be biopsied; inserting a guide wire through the tissue sample; inserting a biopsy instrument into a body, the instrument having: a hollow elongated member, having an axis, and a distal end; a sharpened edge at a portion of said distal end; an actuator; and a pivot axis near said distal end, said actuator transmitting a signal to said sharpened edge causing said sharpened edge to fold about said pivot axis, to move through an arcuate path having a transverse component to said axis, effective for severing tissue along an said path; forming a tissue core within the hollow elongated member; actuating the actuator to cause the sharpened edge to fold, thereby severing a base of the tissue core from the body; and removing the instrument with the tissue core contained therewithin from the body.
Claim 28
Dependent Claim
143 words
A surgical method, comprising: identifying a tissue sample to be biopsied; inserting a guide wire through the tissue sample; inserting a biopsy instrument into a body, the instrument having: a hollow elongated member, having an axis, and a distal end; a sharpened edge at a portion of said distal end; an actuator; and a pivot axis near said distal end, said actuator transmitting a signal to said sharpened edge causing said sharpened edge to fold about said pivot axis, to move through an arcuate path having a transverse component to said axis, effective for severing tissue along an said path; forming a tissue core within the hollow elongated member; actuating the actuator to cause the sharpened edge to fold, thereby severing a base of the tissue core from the body; and removing the instrument with the tissue core contained therewithin from the body.
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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) | 2001-12-14 | 2002-06-15 | 2002-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-14 | 2006-06-15 | 2006-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-14 | 2010-06-15 | 2010-12-15 | $7700.00 | Window Closed / Lapsed |