Close clearance seal for rotatable therapeutic catheters

Details Close clearance seal for rotatable therapeutic catheters Close clearance seal for rotatable therapeutic catheters

1984-06-27

1986-05-27

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

128305, A61M 518

Patent

active

045913552

ABSTRACT:
The present invention relates to a seal for a rotatable therapeutic catheter, such as a motor driven therapeutic catheter. The seal is made of a drive shaft which extends through an elongated bushing. The combined drive shaft and bushing form a low-friction axle/bearing combination such that there is little friction between them. In addition, the long restrictive path between the drive shaft and the bushing serves to prevent leakage between them.

REFERENCES:
patent: 3844272 (1974-10-01), Banko
patent: 3906954 (1975-09-01), Baehr et al.
patent: 4159022 (1979-06-01), Pevsner
patent: 4167944 (1979-09-01), Banko

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