Distal protection device
First Claim
1. A distal protection device comprising a catheter having a proximal end portion, a distal end portion, and a cylindrical wall extending from the proximal end portion to the distal end portion along a longitudinal axis and having a sidewall formed therein and a slot formed in a portion of the sidewall, the slot extending parallel to the longitudinal axis and positioned proximal of a distal end of the catheter to form an opening in the sidewall, a single flexible member forming first and second loop openings, the flexible member movable from a first retracted position wherein a portion lies within the opening in the sidewall to a second looped position extending laterally with respect to the catheter and through the opening in the sidewall such that the first loop opening extends substantially in a direction of blood flow as the first loop opening lies in a plane substantially parallel to a transverse axis of the catheter and the second loop opening extends substantially in a direction of blood flow as the second loop opening lies in a plane substantially parallel to a transverse axis of the catheter, and filtering material movable from a collapsed position to an expanded position in response to movement of the flexible member, the filtering material allowing blood flow therethrough while capturing embolic material dislodged by a treatment device.
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Accused Products
Abstract
A distal protection device comprising a catheter, a flexible member movable from a first position to a second looped position extending laterally with respect to the catheter, such that a first loop opening extends substantially in a direction of blood flow as the first loop opening extends in a plane substantially parallel to a transverse axis of the catheter, and filtering material movable from a collapsed position to an expanded position in response to movement of the flexible member.
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Citations
14 Claims
- 1. A distal protection device comprising a catheter having a proximal end portion, a distal end portion, and a cylindrical wall extending from the proximal end portion to the distal end portion along a longitudinal axis and having a sidewall formed therein and a slot formed in a portion of the sidewall, the slot extending parallel to the longitudinal axis and positioned proximal of a distal end of the catheter to form an opening in the sidewall, a single flexible member forming first and second loop openings, the flexible member movable from a first retracted position wherein a portion lies within the opening in the sidewall to a second looped position extending laterally with respect to the catheter and through the opening in the sidewall such that the first loop opening extends substantially in a direction of blood flow as the first loop opening lies in a plane substantially parallel to a transverse axis of the catheter and the second loop opening extends substantially in a direction of blood flow as the second loop opening lies in a plane substantially parallel to a transverse axis of the catheter, and filtering material movable from a collapsed position to an expanded position in response to movement of the flexible member, the filtering material allowing blood flow therethrough while capturing embolic material dislodged by a treatment device.
- 11. A distal protection device comprising a catheter having a slot extending parallel to a longitudinal axis of the device and forming an opening in a portion of a sidewall spaced proximally from a distal end of the sidewall, a single flexible wire having a portion positioned within the opening of the catheter in a first retracted position and movable from a first position having a lower profile for insertion of the catheter to a second position extending laterally from the catheter and through the sidewall, in the second position the single wire forms first and second loops extending laterally such that a first end of the wire extends in a proximal direction and a second end of the wire extends in a distal direction with the first and second loops therebetween each having an opening extending in a proximal to distal direction, and filtering material disposed over at least a portion of the wire and movable from a collapsed position to an expanded position in response to movement of the wire, the filtering material in the expanded position allowing blood flow therethrough while capturing embolic material dislodged by a treatment device.
Specification