Structure for coupling a guidewire and a catheter

Details Structure for coupling a guidewire and a catheter Structure for coupling a guidewire and a catheter

1988-12-19

1991-09-10

Cannon, Alan

Surgery

Truss

Pad

128673, 128675, 128718, A61B 500

Patent

active

050464973

ABSTRACT:
A method and system for introducing one or more devices into a biological fluid vessel. The system includes a device having a coupling structure comprising a pair of spaced-apart fingers adapted for receiving a guidewire therebetween. Preferably, the system includes a guidewire having a constricted fitting region at its proximal end where the coupling structure may be easily connected to the guidewire. In one use, the method is used in coronary angioplasty to diagnose and treat stenosis across a coronary valve or other vessel in the coronary arterial tree. In this method, a guiding catheter is percutaneously inserted with its distal end proximate the ostium. A guidewire is inserted through the guiding catheter and subselectively positioned in a region of interest in the coronary arterial tree. Multiple devices may be coupled to the guidewire in accordance with the present invention and then threaded down the guidewire and positioned in the region of interest. Advantageously, the diagnostic and therapeutic devices are small (approximately 3 French in diameter), allowing multiple devices to be threaded through the guiding catheter and positioned in the small arteries of the coronary arterial tree. Such diagnostic devices may comprise a number of different sensors (e.g. pressure, temperature, pH, or Doppler sensors) and are useful in a variety of applications (e.g. venous, urinary tract, esophageal).

REFERENCES:
patent: 1747407 (1930-02-01), Wappler
patent: 3038465 (1962-06-01), Allard et al.
patent: 3853130 (1974-12-01), Sheridan
patent: 3995623 (1976-12-01), Blake et al.
patent: 4456013 (1984-06-01), DeRossi et al.
patent: 4613323 (1986-09-01), Norton et al.
patent: 4771782 (1988-09-01), Millar
Schneider Medintag Brochure "Monorail-Bonzel Coronary Dilation System".

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