Patent US7842009B2 successfully refreshed from Google Patents.
US7842009B2
Active / In Force
US
⏱️ 0.9 years remaining
Interventional catheters incorporating aspiration and/or infusion systems
Assignee: Boston Scientific Medical Device Ltd
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Filing: 2007-10-03
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Granted: 2010-11-30
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Expires: 2027-10-03
Abstract
Abstract An interventional catheter assembly comprising a catheter for insertion and guidance to a target site in a body lumen or a cavity and an operating head mounted in proximity to a distal end of the catheter and comprising a system for removing obstructive material from the target site is provided. In certain embodiments, the catheter assembly includes at least one aspiration port located proximal to the operating head that communicates with a first sealed lumen for withdrawing fluids and obstructive material from the target site, together with at least one liquid infusion port penetrating the catheter and located proximal to the at least one aspiration port that communicates with a second sealed lumen for supplying fluid to a location in proximity to the target site.
Inventors
- 👤 Casey Torrance
- 👤 Kate Walsh
- 👤 Jared Salstrom
- 👤 Scott Youmans
- 👤 Edward I. Wulfman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:45
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/22; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00087; A61B1/04; A61B1/05; A61B17/320016; A61B17/32002; A61B17/320725; A61B17/320758; A61B8/00; A61B8/12; A61B8/44; A61B8/4444; A61B8/445; A61M; A61M1/00; A61M1/71; A61M1/80; A61M1/84; A61M25/00; A61M25/0067; A61M25/0082; A61M25/01; A61M25/09; A61M5/00; A61M5/14; A61M5/142; A61M5/168; A61M5/16831; A61B2017/22079; A61B2017/320004; A61B2017/320032; A61B2017/320775; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
140 words
An interventional catheter assembly comprising: (a) a catheter for insertion and guidance to a target site in a body; (b) a rotational operating head mounted in proximity to a distal end of the catheter, the operating head comprising a plurality of external cutter elements for breaking down obstructive material into particles at the target site; (c) at least one aspiration port located proximal to the operating head and each of the plurality of external cutter elements, wherein the at least one aspiration port extends over at least 20% of a circumference of the catheter and is in communication with a first sealed lumen for withdrawing fluids and obstructive material from the target site; and (d) a plurality of infusion ports located proximally with respect to the at least one aspiration port and communicating with an infusion lumen in the catheter.
Claim 2
Dependent Claim
140 words
An interventional catheter assembly comprising: (a) a catheter for insertion and guidance to a target site in a body; (b) a rotational operating head mounted in proximity to a distal end of the catheter, the operating head comprising a plurality of external cutter elements for breaking down obstructive material into particles at the target site; (c) at least one aspiration port located proximal to the operating head and each of the plurality of external cutter elements, wherein the at least one aspiration port extends over at least 20% of a circumference of the catheter and is in communication with a first sealed lumen for withdrawing fluids and obstructive material from the target site; and (d) a plurality of infusion ports located proximally with respect to the at least one aspiration port and communicating with an infusion lumen in the catheter.
Claim 3
Dependent Claim
26 words
The interventional catheter assembly of claim 1 , wherein the at least one aspiration port extends over at least 30% of the circumference of the catheter.
Claim 4
Dependent Claim
41 words
The interventional catheter assembly of claim 1 , additionally comprising an infusion system for supplying infusion fluid to a location in proximity to the target site and a wherein the plurality of liquid infusion ports are spaced circumferentially around the catheter.
Claim 5
Dependent Claim
38 words
The interventional catheter assembly of claim 3 , wherein the plurality of liquid infusion ports are uniformly spaced around the circumference of the catheter to provide substantially even distribution of infusion fluid around the circumference of the catheter.
Claim 6
Dependent Claim
36 words
The interventional catheter assembly of claim 3 , wherein the plurality of liquid infusion ports are non-uniformly spaced to direct flow of infusion fluid in at least one desired direction around the circumference of the catheter.
Claim 7
Dependent Claim
32 words
The interventional catheter assembly of claim 1 , additionally comprising at least one port located in the operating head and in communication with a sealed lumen for aspiration or infusion of liquid.
Claim 8
Dependent Claim
50 words
The interventional catheter assembly of claim 1 , additionally comprising: an infusion system for providing infusion fluid, wherein the infusion and aspiration systems are controlled during operation of the interventional catheter assembly to provide volume ratios of infusate to aspirate of greater than about 1:1 and less than about 2.5:1.
Claim 9
Dependent Claim
27 words
The interventional catheter assembly of claim 7 , wherein the volume ratio of infusion fluid to aspirate is greater than about 1.5:1 and less than about 2.5:1.
Claim 10
Dependent Claim
21 words
The interventional catheter assembly of claim 1 , additionally comprising at least one infusion port located proximal to the aspiration port.
Claim 11
Dependent Claim
58 words
The interventional catheter assembly of claim 1 , additionally comprising: an infusion system for providing infusion fluid to a location in proximity to the target site, wherein the infusion and aspiration systems are controlled during operation of the interventional catheter assembly to provide an infusion rate of about 45-150 ml/min and an aspiration rate of about 20-90 ml/min.
Claim 12
Dependent Claim
48 words
The interventional catheter assembly of claim 1 , additionally comprising: an infusion system for providing infusion fluid to a location in proximity to the target site, wherein the aspiration system and the infusion system are automatically inactivated after a selected time period following inactivation of the operating head.
Claim 13
Dependent Claim
16 words
The interventional catheter assembly of claim 1 , wherein the cutter elements are fixed cutting blades.
Claim 14
Dependent Claim
16 words
The interventional catheter assembly of claim 1 , wherein the cutter elements are adjustable cutting blades.
Claim 15
Dependent Claim
16 words
The interventional catheter assembly of claim 1 , wherein the cutter elements are differential cutting blades.
Claim 16
Dependent Claim
17 words
The interventional catheter assembly of claim 1 , wherein the operating head additionally comprises an abrasive surface.
Claim 17
Dependent Claim
26 words
The interventional catheter assembly of claim 1 , wherein the at least one aspiration port is provided as an opening in a substantially rigid cylindrical shell.
Claim 18
Dependent Claim
38 words
The interventional catheter assembly of claim 16 , wherein the operating head comprises a cutter assembly having a plurality of external cutter elements and the substantially rigid cylindrical shell is approximately the same length as the cutter assembly.
Claim 19
Dependent Claim
21 words
The interventional catheter assembly of claim 1 , additionally comprising an infusion system providing infusion fluid distal to the operating head.
Claim 20
Dependent Claim
21 words
The interventional catheter assembly of claim 1 , additionally comprising an infusion system providing infusion fluid proximal to the operating head.
Claim 21
Dependent Claim
25 words
The interventional catheter assembly of claim 1 , additionally comprising an infusion system having at least one liquid infusion port providing directional flow of infusate.
Claim 22
Dependent Claim
27 words
The interventional catheter assembly of claim 1 , additionally comprising an infusion system providing infusion fluid at pressures of from about 80 to 200 psi during operation.
Claim 23
Dependent Claim
67 words
The interventional catheter assembly of claim 1 , wherein the at least one aspiration port is provided in a cylindrical shell structure located proximal to the operating head and each of the plurality of external cutter elements, wherein the cylindrical shell structure forms a stationary element of a bearing at its distal end and remains stationary relative to the operating head during rotation of the operating head.
References Cited (Backward Citations)
US4728319A
Cited
US5030201A
Cited
US5074841A
Cited
US4981467A
Cited
US5370609A
Cited
US5078722A
Cited
US5284486A
Cited
US5569275A
Cited
US5261877A
Cited
US5358485A
Cited
US5938670A
Cited
US5417703A
Cited
US5876414A
Cited
US20070118072A1
Cited
US6905505B2
Cited
US5779721A
Cited
US6843797B2
Cited
US6524323B1
Cited
US6063069A
Cited
US6053923A
Cited
US6666874B2
Cited
US6001112A
Cited
US6238405B1
Cited
US6702830B1
Cited
US6454775B1
Cited
US7344546B2
Cited
US20020007190A1
Cited
US6565588B1
Cited
US6818001B2
Cited
US20040243162A1
Cited
US20020016564A1
Cited
US6503261B1
Cited
WO2004080345A2
Cited
US20040220519A1
Cited
WO2004080507A2
Cited
US20040181249A1
Cited
US20050240146A1
Cited
US20070073233A1
Cited
WO2007055850A2
Cited
US20080103439A1
Cited
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