Motor driven apparatus having means to prevent reuse and method

Details Motor driven apparatus having means to prevent reuse and method Motor driven apparatus having means to prevent reuse and method

1991-01-14

1992-09-22

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604 22, A61M 550

Patent

active

051493225

ABSTRACT:
A catheter instrument for effecting some minimally invasive medical procedure within the body of a living being. The instrument comprises an elongated tubular member, a working head, a rotary drive cable, and a drive disabling member. The tubular member is of small cross-sectional area to enable it to be inserted through a small opening in the body of the being. The working head is coupled to the drive means to be operated, e.g., rotated, thereby to effect some procedure adjacent its situs. The drive cable is coupled to a motor to efffect its rotation. The elongated member serves to carry a liquid, e.g. water, through at least a portion of it during the use of the instrument. The drive disabling member is responsive to the presence of liquid through the tubular member to change shape and/or size to prevent the drive cable from rotating some time after liquid is carried through the tubular member. This prevents further operation of said working head. In one embodiment the drive disabling member seizes the cable and in another embodiment it uncouples the cable from the motor.

REFERENCES:
patent: 3597582 (1971-08-01), Goode et al.
patent: 4696308 (1987-09-01), Meller et al.
patent: 4781683 (1988-11-01), Wozniak et al.
patent: 4808167 (1989-02-01), Mann et al.
patent: 4850972 (1989-07-01), Schulman et al.

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