Controllable trocar for transmyocardial revascularization (TMR)

Details Controllable trocar for transmyocardial revascularization (TMR) Controllable trocar for transmyocardial revascularization (TMR)

1996-07-03

1998-06-16

Jaworski, Francis

Surgery

Instruments

Light application

606 15, A61B 1736

Patent

active

057661634

ABSTRACT:
A minimally invasive surgical apparatus for providing access to the inside of a chamber of the heart for performing TMR on anterior and posterior walls therein. A unitary or a two piece trocar assembly is positioned through the chest wall. An obturator with a tissue piercing blade at one end is used to saw, pierce or otherwise cut a hole through the epicardium into and through myocardium. Once the trocar assembly extends into the heart chamber, a laser delivery device with deflection means is introduced into the chamber. Deflection or curvature of the end of the laser delivery device can be controlled by angulation control components, such that TMR channels can be created at various positions on the anterior and posterior walls of the chamber. Rotation control components for the fiber or other laser delivery devices will allow the surgeon to rotate the fiber once a predetermined deflection or curvature has been imparted to the distal end of the laser delivery device.

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Frazier et al., "Myocard. Revasc. with Las.", Cullen Cardio. Res. Labs., Tx. Heart Inst., Supp. II C vol. 92, No. 9, II-58-65 (Nov. 1, 1995).

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