Interventional catheters incorporating an active aspiration system
First Claim
1. An interventional catheter assembly comprising:
- (a) an operating head mounted at a distal end of the catheter assembly and comprising a system for removing obstructive material from a target site in a body lumen or cavity;
(b) at least one aspiration port located proximal to the operating head and penetrating the catheter assembly, the at least one aspiration port being in communication with a first sealed lumen that communicates with a vacuum system for withdrawing aspirate fluid and obstructive material from the target site; and
(c) a rotatable member positioned within an internal cavity of the catheter assembly at the site of the aspiration port, wherein the rotatable member comprises at least one upstanding bar provided on a rotatable drive element, the at least one upstanding bar having a longitudinal axis that is aligned with a longitudinal axis of the catheter assembly, wherein the at least one upstanding bar does not extend radially beyond an inner wall of the catheter assembly and the rotatable member rotates during operation of the vacuum system.
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Accused Products
Abstract
An interventional catheter assembly comprises an operating head for removing obstructive material from a target site in a body lumen or cavity and at least one aspiration port located proximal to the operating head and penetrating the catheter assembly, the aspiration port being in communication with a sealed lumen that communicates with a vacuum system for withdrawing aspirate fluid and obstructive material from the target site. A rotatable member is positioned inside the catheter assembly at the site of the aspiration port and rotates during operation of the vacuum system. The rotatable member is provided with at least one upstanding bar that is sized to cooperate with the walls of the aspiration port and the inner surface of the catheter assembly to macerate debris that is drawn into the aspiration port.
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Citations
35 Claims
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1. An interventional catheter assembly comprising:
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(a) an operating head mounted at a distal end of the catheter assembly and comprising a system for removing obstructive material from a target site in a body lumen or cavity; (b) at least one aspiration port located proximal to the operating head and penetrating the catheter assembly, the at least one aspiration port being in communication with a first sealed lumen that communicates with a vacuum system for withdrawing aspirate fluid and obstructive material from the target site; and (c) a rotatable member positioned within an internal cavity of the catheter assembly at the site of the aspiration port, wherein the rotatable member comprises at least one upstanding bar provided on a rotatable drive element, the at least one upstanding bar having a longitudinal axis that is aligned with a longitudinal axis of the catheter assembly, wherein the at least one upstanding bar does not extend radially beyond an inner wall of the catheter assembly and the rotatable member rotates during operation of the vacuum system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An interventional catheter assembly comprising:
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(a) an operating head mounted at a distal end of the catheter assembly and comprising a system for removing obstructive material from a target site in a body lumen or cavity; (b) at least one aspiration port located proximal to the operating head and penetrating the catheter assembly, the at least one aspiration port being in communication with a first sealed lumen that communicates with a vacuum system for withdrawing aspirate fluid and obstructive material from the target site; and (c) a rotatable member positioned within an internal cavity of the catheter assembly at the site of the aspiration port, wherein the rotatable member rotates during operation of the vacuum system and comprises at least one upstanding bar provided on a rotatable drive element, wherein the at least one upstanding bar does not extend radially beyond an inner wall of the catheter assembly, has a curved exterior surface that generally matches an interior surface of the internal cavity of the catheter assembly and rotates within the internal cavity. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. An interventional catheter assembly comprising:
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(a) an operating head mounted at a distal end of the catheter assembly and comprising a system for removing obstructive material from a target site in a body lumen or cavity; (b) at least one aspiration port provided as an opening in a cylindrical shell structure located proximal to the operating head, the at least one aspiration port being in communication with a first sealed lumen that communicates with a vacuum system for withdrawing aspirate fluid and obstructive material from the target site; and (c) a rotatable member that is enclosed by and rotates within the cylindrical shell structure during operation of the vacuum system, wherein the rotatable member comprises at least one upstanding bar. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification