US6409678B1
Expired / Lapsed
US
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Endoscopic biopsy forceps
Assignee: Pentax Corp
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Filing: 2000-03-06
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Granted: 2002-06-25
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Expires: 2020-03-06
Abstract
Abstract Endoscopic biopsy forceps that allows a non-deformed, high-quality tissue specimen to be readily collected from the correct target position. Needles that extend forward to project into a pair of forceps cups are offset from the center of said pair of forceps cups.
Inventors
- 👤 Teruo Ouchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:11
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/06; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1442; A61B18/1445; A61B18/1492; A61B17/00; A61B17/32; A61B2017/320064; A61B18/1206; A61B2018/1246; A61B2018/126
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
93 words
Endoscopic biopsy forceps comprising: a sheath; a manipulating wire extending through the sheath; a pair of forceps cups provided at a distal end of the sheath and configured to open and close by advancing and retracting the manipulating wire along a longitudinal axis; and at least one positioning projection commencing at the distal end of the sheath and extending forward to project through the pair of forceps cups, the positioning projection being offset from a center of the pair of forceps cups and configured to pierce a specimen to positionally secure the forceps.
Claim 2
Dependent Claim
93 words
Endoscopic biopsy forceps comprising: a sheath; a manipulating wire extending through the sheath; a pair of forceps cups provided at a distal end of the sheath and configured to open and close by advancing and retracting the manipulating wire along a longitudinal axis; and at least one positioning projection commencing at the distal end of the sheath and extending forward to project through the pair of forceps cups, the positioning projection being offset from a center of the pair of forceps cups and configured to pierce a specimen to positionally secure the forceps.
Claim 3
Dependent Claim
38 words
The endoscopic biopsy forceps according to claim 1 , wherein a plurality of said positioning projections are positioned side by side, each of said positioning projections being offset from the center of said one pair of forceps cups.
Claim 4
Dependent Claim
40 words
The endoscopic biopsy forceps according to claim 1 , wherein each of said at least one positioning projection is located on an imaginary plane at which said forceps cups abut against each other when said forceps cups are closed completely.
Claim 5
Dependent Claim
39 words
The endoscopic biopsy forceps according to claim 1 , wherein two of said at least one positioning projections are provided, which are arranged symmetrically to each other with respect to the center of said one pair of forceps cups.
Claim 6
Dependent Claim
18 words
The endoscopic biopsy forceps according to claim 1 , wherein each of said forceps cups are electrically conductive.
Claim 7
Dependent Claim
25 words
The endoscopic biopsy forceps according to claim 5 , wherein one of said forceps cups is electrically insulated from the other of said forceps cups.
Claim 8
Dependent Claim
74 words
Endoscopic biopsy forceps comprising: a sheath; a manipulating wire extending through the sheath; a pair of forceps cups provided at a distal end of the sheath and configured to open and close by advancing and retracting the manipulating wire along a longitudinal axis; and a plurality of needles that movably extend through the pair of forceps cups, each of the plurality of needles being offset from a center of the pair of forceps cups.
Claim 9
Dependent Claim
74 words
Endoscopic biopsy forceps comprising: a sheath; a manipulating wire extending through the sheath; a pair of forceps cups provided at a distal end of the sheath and configured to open and close by advancing and retracting the manipulating wire along a longitudinal axis; and a plurality of needles that movably extend through the pair of forceps cups, each of the plurality of needles being offset from a center of the pair of forceps cups.
Claim 10
Dependent Claim
42 words
The endoscopic biopsy forceps according to claim 7 , wherein each of the plurality of needles is positioned on an imaginary plane at which the pair of forceps cups abut against each other when the pair of forceps cups are closed completely.
Claim 11
Dependent Claim
20 words
The endoscopic biopsy forceps according to claim 7 , wherein each of the pair of forceps cups is electrically conductive.
Claim 12
Dependent Claim
25 words
The endoscopic biopsy forceps according to claim 9 , wherein one of the forceps cups is electrically insulated from the other of the forceps cups.
Claim 13
Dependent Claim
80 words
Endoscopic biopsy forceps comprising: a sheath; a manipulating wire extending through the sheath; a pair of forceps cups provided at a distal end of the sheath and configured to open and close by advancing and retracting the manipulating wire along a longitudinal axis; and a pair of needles that movably extend through the pair of forceps cups, each of the pair of needles being offset from and symmetrically arranged with respect to a center of the pair of forceps cups.
Claim 14
Dependent Claim
80 words
Endoscopic biopsy forceps comprising: a sheath; a manipulating wire extending through the sheath; a pair of forceps cups provided at a distal end of the sheath and configured to open and close by advancing and retracting the manipulating wire along a longitudinal axis; and a pair of needles that movably extend through the pair of forceps cups, each of the pair of needles being offset from and symmetrically arranged with respect to a center of the pair of forceps cups.
Claim 15
Dependent Claim
42 words
The endoscopic biopsy forceps according to claim 11 , wherein each of the pair of needles is positioned on an imaginary plane at which the pair of forceps cups abut against each other when the pair of forceps cups are closed completely.
Claim 16
Dependent Claim
20 words
The endoscopic biopsy forceps according to claim 11 , wherein each of the pair of forceps cups is electrically conductive.
Claim 17
Dependent Claim
25 words
The endoscopic biopsy forceps according to claim 13 , wherein one of the forceps cups is electrically insulated from the other of the forceps cups.
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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) | 2005-06-24 | 2005-12-24 | 2006-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-24 | 2009-12-24 | 2010-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-06-24 | 2013-12-24 | 2014-06-25 | $7700.00 | Window Closed / Lapsed |