EP1870044A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Rotational atherectomy system with serrated cutting tip
Assignee: Ev3 Inc
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Filing: 2000-01-26
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Granted: —
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Expires: 2020-01-26
Abstract
Abstract An elongate tubular body extends between a rotatable cutter and a control. The cutter is connected to the control with a rotatable element and has a serrated surface. A vacuum is applied through an annular passage defined between the tubular body and the rotatable element. The control has an indicator that reveals resistance to rotation and/or reduction in flow. Material that has been processed by the cutter is aspirated through the tubular body for disposal. The control enables rotation of the rotatable element only following application of a predetermined level of vacuum.
Inventors
- 👤 John S. Honeycutt
- 👤 Paul Taylor
- 👤 Harold A. Heitzmann
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 05:35
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B2017/00017; A61B2017/00022; A61B2017/00681; A61B2017/00685; A61B17/22; A61B2017/22051; A61B2017/22052; A61B2017/320004; A61B2017/320008
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
65 words
A rotatable cutter for use in an elongate flexible catheter for removing material from a patient, the cutter comprising a cutter body having a proximal end and a distal end, a longitudinal axis of rotation extending between the proximal end and the distal end, a helical thread extending around at least a distal portion of the body, the thread having with at least one serration.
Claim 2
Dependent Claim
27 words
A rotatable cutter as in Claim 1 further comprising at least one radially outwardly extending flange on the body, for rotationally connecting the cutter to the catheter.
Claim 3
Dependent Claim
19 words
A rotatable cutter as in Claim 2, wherein the flange is located at the proximal end of the body.
Claim 4
Dependent Claim
21 words
A rotatable cutter as in any one of the preceding claims, further comprising a guidewire lumen extending through the cutter body.
Claim 5
Dependent Claim
24 words
A rotatable cutter as in any one of the preceding claims, wherein the serration extends in a direction generally normal to the longitudinal axis.
Claim 6
Dependent Claim
21 words
A rotatable cutter as in any one of the preceding claims, wherein the serration extends radially outward from the longitudinal axis.
Claim 7
Dependent Claim
27 words
A rotatable cutter as in any one of the preceding claims, wherein the serration comprises a sloped face relative to a plane extending through the longitudinal axis.
Claim 8
Dependent Claim
62 words
A rotational medical device comprising an elongate, flexible tubular body, having a proximal end and a distal end, a rotatable drive shaft extending through the body, the rotatable cutter as in any one of the preceding claims positioned at the distal end of the body and coupled to the drive shaft and a control positioned at the proximal end of the body.
Claim 9
Dependent Claim
19 words
The rotational medical device as in Claim 8, further comprising an aspiration channel extending axially through the tubular body.
Claim 10
Dependent Claim
42 words
The rotatable cutter of any one of Claims 1 to 7 or the rotational medical device of Claim 8 or 9, wherein the thread has a length within the range of from about 0.25 turns and about 10 turns around the cutter.
Claim 11
Dependent Claim
37 words
The rotatable cutter of any one of Claims 1 to 7 or the rotational medical device of Claim 8 or 9, wherein the thread has a pitch within the range of from about 0.005 to about 0.060.
Claim 12
Dependent Claim
35 words
The rotational medical device of any one of Claims 8 to 11, further comprising a regulator on the control for enabling rotation of the drive shaft only while vacuum is applied to the aspiration channel.
Claim 13
Dependent Claim
83 words
A rotational medical device comprising an elongate, flexible tubular body, having a proximal end and a distal end, a rotatable drive shaft extending through the body, a rotatable cutter positioned at the distal end of the body and coupled to the drive shaft, a control positioned at the proximal end of the body, and an aspiration channel extending axially through the tubular body, the cutter comprising an outer wall having at least one serrated thread extending along a spiral path on the wall.
Claim 14
Dependent Claim
29 words
A rotational medical device as in Claim 13, wherein the thread has a length within the range of from about 0.25 turns and about 10 turns around the cutter.
Claim 15
Dependent Claim
24 words
A rotational medical device as in Claim 13, wherein the thread has a pitch within the range of from about 0.005 to about 0.060.
Claim 16
Dependent Claim
31 words
A rotational medical device as in Claim 13 further comprising a regulator on the control for enabling rotation of the drive shaft only while vacuum is applied to the aspiration channel.
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