Patent EP0829232A2 successfully refreshed from Google Patents.
EP0829232A2
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EP
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Minimally invasive biopsy device
Assignee: City of Hope
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Filing: 1997-08-29
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Granted: —
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Expires: 2017-08-29
Abstract
Abstract A minimally invasive biopsy device (10) includes a cylindrical retractor (12) and a cylindrical cutting tool (14) slidingly engaged within the cylindrical retractor (12). The cylindrical retractor (12) is adapted for insertion in an incision (43) above a lesion (61) to be excised, and separates the walls of the incision (43) to provide access to the tissue to be excised. The cylindrical cutting tool (12) has a cutting means (21) which makes a cylindrical incision around the tissue to be excised. The tissue can then be accurately and quickly removed.
Inventors
- 👤 David Z. J. Chu
- 👤 Todd Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/04; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B2017/00743; A61B2017/00796; A61B17/32; A61B17/320016; A61B2017/32004
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
191 words
A minimally Invasive biopsy device for
excising a soft tissue lesion along with a margin of
tissue around the lesion, said device comprising (a) a cylindrical retractor having a distal end to
be inserted into an incision and a proximal end to
extend out of the incision, and (b) a cylindrical cutting tool that is slidingly
engaged within the cylindrical retractor, said cylindrical retractor having a length
sufficient to allow its distal end to be placed within
a distance from the lesion that is substantially equal
to the margin while allowing the proximal end to extend
out of the incision and having an inside diameter
sufficient to accept the cylindrical cutting tool; said cylindrical cutting tool having a cutting
means on its distal end and having a length that is
sufficient to allow the distal cutting means to be
extended beyond the lesion by a distance equal to the
margin, while allowing the proximal end to remain at
least substantially even with the proximal end of the
cylindrical retractor and having an inside diameter
substantially equal to the diameter of the lesion plus
the margins on each side of the legion.
Claim 2
Dependent Claim
43 words
The minimally invasive biopsy device of claim
1, which further comprises a conductive rod extending
longitudinally through the wall of the cylindrical
cutting tool and terminating at the distal end with an
electrocautery tip and wherein the cutting means
comprises said electrocautery tip.
Claim 3
Dependent Claim
27 words
The minimally invasive biopsy device of claim
1, wherein the cutting means comprises a knife edge
which extends beyond the distal end of the cylindrical
cutting tool.
Claim 4
Dependent Claim
30 words
The minimally invasive biopsy device of claim
1, wherein the cutting means comprises a sharpened
cutting edge extending around the circumference of the
distal end of the cylindrical cutting tool.
Claim 5
Dependent Claim
14 words
The minimally invasive biopsy device of claim
2, wherein the electrocautery tip is retractable.
Claim 6
Dependent Claim
25 words
The minimally invasive biopsy device of claim
5, wherein the electrocautery tip curves inward when
extended beyond the distal end of the cylindrical
cutting tool.
Claim 7
Dependent Claim
28 words
The minimally invasive biopsy device of claim
1, wherein the cylindrical retractor has a lip which
extends around the circumference of the proximal end of
the cylindrical retractor.
Claim 8
Dependent Claim
30 words
The minimally invasive biopsy device of claim
1, wherein the cylindrical cutting tool has a lip which
extends around the circumference of he proximal end of
the cylindrical cutting tool.
Claim 9
Dependent Claim
38 words
The minimally invasive biopsy device of claim
1, wherein the inside diameter of the cylindrical
cutting tool is substantially equal to the diameter of
the lesion plus the margins on each side of the legion
to be excised.
Claim 10
Dependent Claim
42 words
The minimally invasive biopsy device of claim
1, wherein the length of the cylindrical cutting tool,
including the cutting means, is sufficient to permit a
cylindrical Incision to extend by about the distance of
one margin beyond the lesion to be excised.
References Cited (Backward Citations)
No citation records indexed.
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