Patent US2751432A successfully refreshed from Google Patents.
US6206898B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational atherectomy device
Assignee: Covidien LP
•
Filing: 1999-03-01
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Granted: 2001-03-27
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Expires: 2019-03-01
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. 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
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:00
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; A61B90/00; A61B90/06; A61B2090/062; A61B2090/064; A61B2217/00; A61B2217/002; A61B2217/005
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
96 words
A method of removing material from a vessel, comprising the steps of: providing an elongate, flexible, tubular body, having a proximal end and a distal end, a rotatable cutter at the distal end of the tubular body, and a control on the proximal end of the tubular body; transluminally advancing the distal end of the tubular body to the material; rotating the rotatable cutter; drawing portions of the material proximally past the rotatable cutter and into the tubular body; and providing feedback to the operator in response to changes in the load on the rotatable cutter.
Claim 2
Independent Claim
96 words
A method of removing material from a vessel, comprising the steps of: providing an elongate, flexible, tubular body, having a proximal end and a distal end, a rotatable cutter at the distal end of the tubular body, and a control on the proximal end of the tubular body; transluminally advancing the distal end of the tubular body to the material; rotating the rotatable cutter; drawing portions of the material proximally past the rotatable cutter and into the tubular body; and providing feedback to the operator in response to changes in the load on the rotatable cutter.
Claim 3
Dependent Claim
26 words
A method as in claim 1 , wherein the drawing step is accomplished by connecting a vacuum source to the proximal end of the tubular body.
Claim 4
Dependent Claim
49 words
A method as in claim 1 , wherein the advancing step is accomplished by applying axial distal pressure on the tubular body, and further comprising the step of reducing the amount of axial distal pressure in response to feedback indicating a change in the load on the rotatable cutter.
Claim 5
Dependent Claim
21 words
A method as in claim 2 , wherein the control both activates the vacuum and commences rotation of the rotatable cutter.
Claim 6
Independent Claim
112 words
A method of removing material from a vessel, comprising the steps of: providing an elongate, flexible, tubular body, having a proximal end and a distal end, a rotatable cutter proximate the distal end of the tubular body, and a control on the proximal end of the tubular body for controlling the rotatable cutter; advancing the distal end of the tubular body transluminally to the material; applying a vacuum through the tubular body; rotating the rotatable cutter after applying the vacuum; drawing portions of the material proximally past the rotatable cutter and into the tubular body; and providing feedback to the operator in response to changes in the load on the rotatable cutter.
Claim 7
Independent Claim
112 words
A method of removing material from a vessel, comprising the steps of: providing an elongate, flexible, tubular body, having a proximal end and a distal end, a rotatable cutter proximate the distal end of the tubular body, and a control on the proximal end of the tubular body for controlling the rotatable cutter; advancing the distal end of the tubular body transluminally to the material; applying a vacuum through the tubular body; rotating the rotatable cutter after applying the vacuum; drawing portions of the material proximally past the rotatable cutter and into the tubular body; and providing feedback to the operator in response to changes in the load on the rotatable cutter.
Claim 8
Dependent Claim
17 words
The method of claim 5 , wherein the operator can reverse the rotation of the rotatable cutter.
Claim 9
Dependent Claim
27 words
The method of claim 6 , wherein the rotation of the rotatable cutter is reversed by the operator when the operator receives feedback indicating an overload condition.
Claim 10
Independent Claim
103 words
A method of removing material from a patient, comprising the steps of: providing an elongate flexible tubular body, having a proximal end and a distal end, a rotatable cutter on the distal end of the tubular body, and a control on the proximal end of the tubular body; advancing the distal end of the tubular body to the material to be removed; manipulating the control to activate a vacuum through the tubular body; manipulating the control to commence rotation of the rotatable cutter to remove material from the patient wherein rotation of the cutter can only be accomplished if the vacuum is on.
Claim 11
Independent Claim
103 words
A method of removing material from a patient, comprising the steps of: providing an elongate flexible tubular body, having a proximal end and a distal end, a rotatable cutter on the distal end of the tubular body, and a control on the proximal end of the tubular body; advancing the distal end of the tubular body to the material to be removed; manipulating the control to activate a vacuum through the tubular body; manipulating the control to commence rotation of the rotatable cutter to remove material from the patient wherein rotation of the cutter can only be accomplished if the vacuum is on.
Claim 12
Dependent Claim
30 words
A method as in claim 8 , wherein said advancing step comprises advancing the distal end of the tubular body transluminally through a vessel to the material to be removed.
Claim 13
Dependent Claim
19 words
A method as in claim 9 , wherein the advancing step comprises advancing the tubular body along a guidewire.
Claim 14
Dependent Claim
21 words
A method as in claim 8 , wherein the advancing step comprises advancing the tubular body through a percutaneous access device.
Claim 15
Dependent Claim
23 words
A method as in claim 8 , further comprising the step of infusing fluid through a guidewire flush port on the proximal control.
Claim 16
Dependent Claim
17 words
A method as in claim 8 , further comprising providing feedback regarding a sensed vacuum operational condition.
Claim 17
Independent Claim
80 words
A method of removing an obstruction from a body vessel comprising the steps of: positioning a rotational atherectomy catheter at a treatment site in a body lumen; rotating a rotatable cutter on the rotational atherectomy catheter, to dislodge material in the body lumen; and applying a vacuum to the rotational atherectomy catheter to proximally withdraw material dislodged by the rotatable cutter; wherein the step of rotating the rotatable cutter is only performed after a predetermined level of vacuum is established.
Claim 18
Independent Claim
80 words
A method of removing an obstruction from a body vessel comprising the steps of: positioning a rotational atherectomy catheter at a treatment site in a body lumen; rotating a rotatable cutter on the rotational atherectomy catheter, to dislodge material in the body lumen; and applying a vacuum to the rotational atherectomy catheter to proximally withdraw material dislodged by the rotatable cutter; wherein the step of rotating the rotatable cutter is only performed after a predetermined level of vacuum is established.
Claim 19
Dependent Claim
25 words
The method of claim 14 further comprising disabling the rotation of the rotatable cutter if the actual level of vacuum falls below the predetermined level.
Claim 20
Dependent Claim
22 words
The method of claim 14 further comprising activating a low vacuum level alarm to alert a user to a low vacuum condition.
Claim 21
Dependent Claim
18 words
The method of claim 15 , wherein the actual level of vacuum is sensed by a flow detector.
Claim 22
Dependent Claim
18 words
The method of claim 15 , where the actual level of vacuum is sensed by a pressure transducer.
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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) | 2004-03-26 | 2004-09-25 | 2005-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-26 | 2008-09-25 | 2009-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-26 | 2012-09-25 | 2013-03-27 | $7700.00 | Window Closed / Lapsed |