摘要:
Apparatus for introduction into the vessel of a patient comprising a guiding catheter adapted to be inserted into the vessel of the patient and a device adapted to be inserted into the guiding catheter. The device includes a flexible elongate member and a sleeve carried by the flexible elongate member near the distal extremity thereof and extending from a region near the distal extremity to a region spaced from the distal extremity of the flexible elongate element. The device also includes a guide wire adapted to extend through the sleeve so that the guide wire extends rearwardly of the sleeve extending alongside of and exteriorally of the flexible elongate element into a region near the proximal extremity of the flexible elongate element.
摘要:
Ultrasonic apparatus and method for high resolution intravascular imaging to assist in treating endovascular lesions and to monitor the results of interventional treatment. An ultrasonic transducer is carried by the distal end of a catheter adapted for insertion into a vessel, and either the transducer or another element is rotated and/or translated relative to the catheter to image different portions of the vessel, an inflatable balloon carried on the distal extremity of the catheter covering at least part of a longitudinal section through which the ultrasonic transducer is swept during imaging without substantially attenuating the ultrasonic waves emitted from the transducer.
摘要:
Balloon dilatation catheter adapted to be utilized in connection with a guiding catheter and a guide wire. The catheter comprises a flexible elongate tubular member having proximal and distal extremities and having a lumen extending therethrough. An inflatable balloon is mounted on the distal extremity of the tubular member. The interior of the inflatable balloon is in communication with the lumen. A sleeve extends through the balloon and extends rearwardly from the balloon and alongside the lumen. The sleeve has a guidewire lumen extending therethrough. The guidewire lumen is adapted to receive a guide wire extending therethrough and extending rearwardly of the flexible elongate element into a region adjacent the proximal extremity of the proximal elongate element. The sleeve has a slit extending longitudinally of the same from the proximal extremity of the sleeve to a region adjacent the balloon permitting the guide wire to be removed therethrough.
摘要:
A catheter is provided for insertion into the blood vessel of a patient for ultrasonically imaging the vessel wall. The catheter includes a tubular element and an internally housed drive cable for effective a circumferential scan about the catheter of an ultrasonic generating means. Both the tubular element and the drive cable are of a size and flexibility sufficient to permit their introduction into the vessel and subsequent advancement through the vessel to the location of the vessel wall where imaging is desired.
摘要:
Balloon dilatation catheter adapted to be utilized in connection with a guiding catheter and a guide wire. The catheter comprises a flexible elongate tubular member having proximal and distal extremities and having a lumen extending therethrough. An inflatable balloon is mounted on the distal extremity of the tubular member. The interior of the inflatable balloon is in communication with the lumen. A sleeve extends through the balloon and extends rearwardly from the balloon and alongside the lumen. The sleeve has a guidewire lumen extending therethrough. The guidewire lumen is adapted to receive a guide wire extending therethrough and extending rearwardly of the flexible elongate element into a region adjacent the proximal extremity of the proximal elongate element. The sleeve has a slit extending longitudinally of the same from the proximal extremity of the sleeve to a region adjacent the balloon permitting the guide wire to be removed therethrough.
摘要:
A catheter is provided for insertion into the blood vessel of a patient for ultrasonically imaging the vessel wall. The catheter includes a tubular element and an internally housed drive cable for effecting a circumferential scan about the catheter of an ultrasonic generating means. Both the tubular element and the drive cable are of a size and flexibility sufficient to permit their introduction into the vessel and subsequent advancement through the vessel to the location of the vessel wall where imaging is desired.
摘要:
Apparatus for introduction into the vessel of a patient comprising a guiding catheter adapted to be inserted into the vessel of the patient and a device adapted to be inserted into the guiding catheter. The device includes a flexible elongate member and a sleeve carried by the flexible elongate member near the distal extremity thereof and extending from a region near the distal extremity to a region spaced from the distal extremity of the flexible elongate element. The device also includes a guide wire adapted to extend through the sleeve so that the guide wire extends rearwardly of the sleeve extending alongside of and exteriorally of the flexible elongate element into a region near the proximal extremity of the flexible elongate element.
摘要:
Vascular catheters include ultrasonic imaging capability and optical waveguides for delivering laser energy for ablating vascular obstructions. The ultrasonic imaging capability comprises a fixed ultrasonic transducer which directs ultrasonic energy at a reflective surface on a rotating element. The rotating element allows the interior of the blood vessel to be scanned prior to the application of laser energy to ablate the obstruction.
摘要:
Apparatus for introduction into the vessel of a patient comprising a guiding catheter adapted to be inserted into the vessel of the patient and a device adapted to be inserted into the guiding catheter. The device includes a flexible elongate member and a sleeve carried by the flexible elongate member near the distal extremity thereof and extending from a region near the distal extremity to a region spaced from the distal extremity of the flexible elongate element. The device also includes a guide wire adapted to extend through the sleeve so that the guide wire extends rearwardly of the sleeve extending alongside of and exteriorally of the flexible elongate element into a region near the proximal extremity of the flexible elongate element.
摘要:
The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.