Method of use of catheter with working head having selectable im

Details Method of use of catheter with working head having selectable im Method of use of catheter with working head having selectable im

1990-06-29

1992-03-24

Thaler, Michael H.

Surgery

Miscellaneous

Methods

606159, 606180, A61B 1722

Patent

active

050978497

ABSTRACT:
A catheter and method of use for engaging material within the body of a living being to accomplish a medical and/or surgical procedure, e.g., form and enlarging an opening in a restriction in a vessel, duct, or lumen formed by the material, or to destroy a stone or other hard body formed of the material. The catheter comprises an elongated body portion and a rotatable working head located at the distal end of the catheter. The catheter is positioned with the working head adjacent the material to be enlarged. The working head comprises at least two, non-sharp, impacting surfaces, each of differing aggressiveness of restriction opening action. The less aggressive of the impacting surfaces is brought into engagement with the material when the working head is rotated in one rotational direction. The more aggressive of the impacting surfaces is then rotated in the opposite rotational direction and brought into engagement with the material to complete the procedure.

REFERENCES:
patent: 4700705 (1987-10-01), Kensey et al.

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