US5795308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coaxial breast biopsy
Assignee: Individual
•
Filing: 1996-07-26
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Granted: 1998-08-18
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Expires: 2016-07-26
Abstract
Abstract A device and method for coaxial breast biopsy utilizing a rigid rod. The suspected cancer is pierced by a rigid rod which stabilizes the cancer in the path of a cutting cannula and provides mechanical guidance for the cannula as it incises a cylinder of tissue centered on the rod. The rigid rod has retractable anchor hooks and a spiked collar to slide over the rod. The cancer is bracketed by the anchor hooks distally and the spiked collar proximally to stabilize it on the rod and mark its position for excision by the cannula. Associated tools enable insertion and positioning of the rod with anchor hooks and the spiked collar while the cutting cannula employs an internally situated snare wire to sever the specimen from the breast once it has been incised by the cannula. A reel mechanism or hemostat is used to tighten the snare wire. The location of the biopsy within the breast is marked with a spring clip and clip injector in case further therapy is required. An incision from the skin down to the location of the spiked collar is made with a power scalpel with an oscillating circular blade. A stabilizing device is utilized to facilitate the initial incision in the breast and subsequent passage of the cutting cannula.
Inventors
- 👤 Lincoln D. Russin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:54
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B17/00; A61B17/28; A61B17/2812; A61B17/282; A61B17/32; A61B17/320016; A61B17/32002; A61B90/00; A61B90/10; A61B90/14; A61B90/17; A61B17/3205; A61B17/32056; A61B17/34; A61B17/3417; A61B17/3421; A61B2017/32004; A61B90/39; A61B2090/3904; A61B2090/3908
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
216 words
A biopsy kit comprising: a) a stiff, point-sharpened rod; b) a bevel-ended tube adapted to pass coaxially over the stiff, point-sharpened rod; c) a stiff anchor rod having a plurality of flexible, resilient anchor hooks located at a distal end thereof, said stiff anchor rod and plurality of flexible anchor hooks being adapted to pass through the bevel-ended tube until the anchor hooks extend beyond the bevel-ended tube; d) an insertion tube having a collar seat at an insertion and thereof, said insertion tube being adapted to pass coaxially over the stiff anchor rod; and, e) a spiked collar having a plurality of flexible, resilient radially extending spikes adapted to be positioned removably against the collar seat of said insertion tube whereby the stiff, point-sharpened rod can penetrate and impale a suspected cancer with the bevel-ended tube thereafter positioned coaxially over the stiff, point-sharpened rod which can then be withdrawn leaving the bevel-ended tube located with respect to the suspected cancer to provide a guide for the stiff anchor rod that passes through the bevel-ended tube with the anchor hooks extending beyond the bevel-ended tube which can then be withdrawn so that the insertion tube can pass coaxially over the anchor rod with the spiked collar positioned removably against the collar seat of the insertion tube.
Claim 2
Dependent Claim
216 words
A biopsy kit comprising: a) a stiff, point-sharpened rod; b) a bevel-ended tube adapted to pass coaxially over the stiff, point-sharpened rod; c) a stiff anchor rod having a plurality of flexible, resilient anchor hooks located at a distal end thereof, said stiff anchor rod and plurality of flexible anchor hooks being adapted to pass through the bevel-ended tube until the anchor hooks extend beyond the bevel-ended tube; d) an insertion tube having a collar seat at an insertion and thereof, said insertion tube being adapted to pass coaxially over the stiff anchor rod; and, e) a spiked collar having a plurality of flexible, resilient radially extending spikes adapted to be positioned removably against the collar seat of said insertion tube whereby the stiff, point-sharpened rod can penetrate and impale a suspected cancer with the bevel-ended tube thereafter positioned coaxially over the stiff, point-sharpened rod which can then be withdrawn leaving the bevel-ended tube located with respect to the suspected cancer to provide a guide for the stiff anchor rod that passes through the bevel-ended tube with the anchor hooks extending beyond the bevel-ended tube which can then be withdrawn so that the insertion tube can pass coaxially over the anchor rod with the spiked collar positioned removably against the collar seat of the insertion tube.
Claim 3
Dependent Claim
40 words
The biopsy kit of claim 1 further comprising: a microscalpel having a longitudinally extending tube adapted to pass coaxially over said stiff anchor rod and an arcuate cutting blade mounted on said longitudingly extending tube at a distal end thereof.
Claim 4
Dependent Claim
100 words
The biopsy kit of claim 1 further comprising: a powered microscalpel comprising: a) a housing having a longitudinal axis; b) an electrically powered motor mounted within said housing, said motor providing reciprocatory motion in a direction parallel to the longitudinal axis of the housing; c) a circular scalpel having a cutting portion along at least a segment of the circumference of the circular scalpel; d) means for rotationally mounting said circular scalpel with respect to said housing; and, e) means for imparting the reciprocatory motion of said motor to said circular scalpel to rotate the circular scalpel clockwise and counter-clockwise.
Claim 5
Dependent Claim
130 words
The biopsy kit of claim 1 further comprising: a breast compression and stabilization instrument having: a) a first tong having an intermediate section, a finger receiving aperture at one end of the intermediate section and a pair of tines at the other end thereof; b) a second tong having and intermediate section, a finger receiving aperture at one end of the intermediate section and a relatively flat spoon portion at the other end thereof; c) means for rotationally securing said first and second tongs together in a scissor-like manner; and, d) means for releasably holding said first and second tongs at a fixed position relative to each other so that a desired open distance can be releasably maintained between said tines and said relatively flat spoon portion during breast biopsy.
Claim 6
Dependent Claim
25 words
The biopsy kit of claim 1 further comprising: a cannula having a cutting end and being adapted to coaxially advance along the stiff anchor rod.
Claim 7
Dependent Claim
69 words
The biopsy kit of claim 5 wherein said cannula has a snare loop located within the cannula and wherein the snare loop includes two standing ends that are parallel with respect to said stiff anchor rod and extend along said cannula away from its cutting end whereby when said standing ends are pulled in a direction away from the cutting end of the cannula, the snare loop is closed.
Claim 8
Dependent Claim
40 words
The biopsy kit of claim 6 wherein said snare loop standing ends are positioned externally to said cannula and further comprising an outer tube adapted to slip over the cannula and hold the standing ends with respect to the cannula.
Claim 9
Dependent Claim
33 words
The biopsy kit of claim 6 wherein the cannula has an internal circumferential groove adjacent to the cutting end of said cannula and wherein said snare loop rests in said internal circumferential groove.
Claim 10
Dependent Claim
33 words
The biopsy kit of claim 8 wherein said snare loop is a resilient material having sufficient resiliency to maintain the snare loop in said internal circumferential groove prior to pulling said standing ends.
Claim 11
Dependent Claim
31 words
The biopsy kit of claim 8 wherein the cannula internal circumferential groove has an aperture and wherein said snare loop standing ends are positioned externally by passing them through said aperture.
Claim 12
Dependent Claim
22 words
The biopsy kit of claim 5 wherein said cannula has an external longitudinal groove and wherein said standing ends are positioned therein.
Claim 13
Dependent Claim
99 words
The biopsy kit of claim 5 further comprising: a) a flexible, resilient metallic target clip; b) a longitudinally extending target clip insertion tube having a longitudinal axis and an arcuate base member adapted to fit on the cannula so that the longitudinal axis of the target clip insertion tube is parallel to the stiff anchor rod; and, c) a target clip insertion rod adapted to fit within and move along the longitudinal axis of the target clip insertion tube to drive a flexible, resilient metallic target clip positioned therein along said axis for injection into tissue of a patient.
References Cited (Backward Citations)
US4007732A
Cited
US4461305A
Cited
US4727565A
Cited
US4651752A
Cited
US4691333A
Cited
US4682606A
Cited
US4821727A
Cited
US4837795A
Cited
US4966583A
Cited
US5445645A
Cited
US5183463A
Cited
US5415169A
Cited
US5172702A
Cited
US5074311A
Cited
US5083570A
Cited
US5353804A
Cited
US5188118A
Cited
US5267572A
Cited
US5148813A
Cited
US5133360A
Cited
US5316014A
Cited
US5573008A
Cited
US5452367A
Cited
US5526822A
Cited
US5570699A
Cited
US5507298A
Cited
US5499989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |