US20080091196A1
Active / In Force
US
⏱️ 1.0 years remaining
Wire-guided aspiration needle
Assignee: Cook Endoscopy
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Filing: 2007-10-09
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Granted: —
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Expires: 2027-10-09
Abstract
Abstract A needle knife sphincterotome comprising a tensioning filament for positionally adjusting its distal end and a needle knife configured for tissue aspiration. The sphincterotome includes an actuatable handle attached to an elongate shaft having a needle knife near its distal end. The tensioning filament includes proximal and distal attachments and is configured such that actuation of the handle introduces a tension in the tensioning filament that bends, arches, or otherwise deforms the distal end of the sphincterotome shaft.
Inventors
- 👤 Stephen Deal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:36
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1477; A61B18/1492; A61B17/00; A61B17/32; A61B17/3205; A61B17/32053; A61B17/34; A61B17/3403; A61B17/3478; A61B18/1206; A61B18/149; A61B17/00234; A61B2017/00292; A61B2017/003; A61B2018/00315; A61B2018/00553; A61B2018/1405; A61B2018/1407; A61B2018/1425; A61B2018/1465; A61B2218/00; A61B2218/001; A61B2218/007; A61B2218/008; A61B34/00; A61B34/20; A61B90/00; A61B90/39; A61M; A61M25/00; A61M25/01; A61M2025/018; A61M2025/0183
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
170 words
1 . A sphincterotome, comprising: a handle assembly; a flexible elongate shaft connected to the handle assembly and comprising a first lumen, a proximal end, and a distal end; an electroconductive component extending through at least a portion of the elongate shaft and comprising a proximal component section and a distal component section, the proximal component section having a proximal attachment to an electrode, and the distal component section extending beyond the distal end of the elongate shaft to form a cutting element; and a tensioning filament comprising a proximal filament section and a distal filament section, the proximal filament section being slidably disposed at least partially in the first lumen and having a proximal attachment to the handle assembly, a portion of the distal filament section exiting the first lumen and having a distal attachment near the distal end of the shaft, said filament configured such that an actuation motion of the handle assembly moves the filament longitudinally in a manner that deforms a distal portion of the shaft.
Claim 2
Dependent Claim
170 words
1 . A sphincterotome, comprising: a handle assembly; a flexible elongate shaft connected to the handle assembly and comprising a first lumen, a proximal end, and a distal end; an electroconductive component extending through at least a portion of the elongate shaft and comprising a proximal component section and a distal component section, the proximal component section having a proximal attachment to an electrode, and the distal component section extending beyond the distal end of the elongate shaft to form a cutting element; and a tensioning filament comprising a proximal filament section and a distal filament section, the proximal filament section being slidably disposed at least partially in the first lumen and having a proximal attachment to the handle assembly, a portion of the distal filament section exiting the first lumen and having a distal attachment near the distal end of the shaft, said filament configured such that an actuation motion of the handle assembly moves the filament longitudinally in a manner that deforms a distal portion of the shaft.
Claim 3
Dependent Claim
22 words
2 . The sphincterotome of claim 1 , wherein the electroconductive component comprises a longitudinal lumen configured for aspiration of tissue therethrough.
Claim 4
Dependent Claim
26 words
3 . The sphincterotome of claim 1 , wherein the tensioning filament is electroconductive, and the proximal filament portion is in electroconductive contact with the electrode.
Claim 5
Dependent Claim
93 words
4 . The sphincterotome of claim 1 , wherein the handle assembly comprises: a first ring handle structure connected to the elongate shaft; a second ring handle structure mounted to the first ring handle structure in a manner allowing proximal and distal sliding movement of the second ring handle structure relative to the first ring handle structure; the second ring handle structure comprising the proximal attachment of the tensioning filament; wherein a movement of the second ring handle structure relative to the first handle portion moves the filament longitudinally within the first lumen.
Claim 6
Dependent Claim
30 words
5 . The sphincterotome of claim 4 , further comprising a locking mechanism configured to limit movement of the first ring handle structure relative to the second ring handle structure.
Claim 7
Dependent Claim
25 words
6 . The sphincterotome of claim 1 , further comprising a wire guide lumen disposed longitudinally through at least a portion of the elongate shaft.
Claim 8
Dependent Claim
31 words
7 . The sphincterotome of claim 6 , wherein the elongate shaft comprises a side port that is disposed near the distal end and is open to the wire guide lumen.
Claim 9
Dependent Claim
15 words
8 . The sphincterotome of claim 1 , further comprising at least one radio-opaque marker.
Claim 10
Dependent Claim
29 words
9 . The sphincterotome of claim 1 , wherein the electroconductive component is configured such that its distal component section is at least partly retractable into the elongate shaft.
Claim 11
Dependent Claim
25 words
10 . The sphincterotome of claim 9 , comprising a generally proximal ring structure connected to, and configured for extending and retracting, the electroconductive component.
Claim 12
Dependent Claim
36 words
11 . The sphincterotome of claim 10 , wherein the generally proximal ring structure comprises a catch mechanism configured to substantially hold the electroconductive component in at least one of an extended or a retracted position.
Claim 13
Dependent Claim
73 words
12 . A needle knife sphincterotome comprising: a proximal handle assembly; an elongate shaft extending distally from the handle assembly; an electroconductive needle knife element disposed at least partially through the elongate shaft; a tensioning filament connecting the handle assembly to a region near a distal end of the elongate shaft and configured such that an actuation of the handle assembly exerts a deforming tension upon the distal end of the elongate shaft.
Claim 14
Dependent Claim
73 words
12 . A needle knife sphincterotome comprising: a proximal handle assembly; an elongate shaft extending distally from the handle assembly; an electroconductive needle knife element disposed at least partially through the elongate shaft; a tensioning filament connecting the handle assembly to a region near a distal end of the elongate shaft and configured such that an actuation of the handle assembly exerts a deforming tension upon the distal end of the elongate shaft.
Claim 15
Dependent Claim
26 words
13 . The needle knife sphincterotome of claim 12 , further comprising a wire guide lumen extending through at least a portion of the elongate shaft.
Claim 16
Dependent Claim
39 words
14 . The needle knife sphincterotome of claim 12 , wherein the electroconductive needle knife element is slidably disposed through at least a portion of a lumen of the elongate shaft and is configured to be distally extendable therefrom.
Claim 17
Dependent Claim
26 words
15 . The sphincterotome of claim 12 , further comprising a locking mechanism configured to limit movement of at least a portion of the handle assembly.
Claim 18
Dependent Claim
28 words
16 . The sphincterotome of claim 12 , further comprising a locking mechanism configured to limit movement of at least a portion of the electroconductive needle knife element.
References Cited (Backward Citations)
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