Hydraulically operated surgical scissors
First Claim
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1. A hydraulically operated surgical scissors comprising:
- a tubular flexible arm containing over its length a sealed pliable tube filled with fluid, said flexible arm having a first and a second end;
a manipulator attached to the first end of said flexible arm, said manipulator including a tubular member aligned with said flexible arm and containing a slideable piston having first and second surfaces, said first surface in communication with said sealed pliable tube for exerting a force against said tube, said manipulator including a pair of normally open, elongated scissor handles with thumb and index finger rings protruding from an open end of said tubular member, said handles being pivoted together near the center of their lengths, each handle of said pair being pivotally coupled to a corresponding short link which is pivotally coupled to said second surface of said piston whereby closure of said finger rings forces said piston against said pliable tube; and
an operator removably attached to the second end of said flexible arm, said operator including a scissors having a pair of blades having first and second ends, said blades being closed by the movement of an operator piston in contact with said sealed pliable tube.
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Abstract
A highly maneuverable surgical scissors at the end of an 8 mm. diameter flexible arm 45 cm. in length and controlable by a scissors handle at the opposite end is designed for modern thoracoscopic and laparoscopic surgery through a "button-hole" access port in a minimally invasive procedure.
204 Citations
6 Claims
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1. A hydraulically operated surgical scissors comprising:
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a tubular flexible arm containing over its length a sealed pliable tube filled with fluid, said flexible arm having a first and a second end; a manipulator attached to the first end of said flexible arm, said manipulator including a tubular member aligned with said flexible arm and containing a slideable piston having first and second surfaces, said first surface in communication with said sealed pliable tube for exerting a force against said tube, said manipulator including a pair of normally open, elongated scissor handles with thumb and index finger rings protruding from an open end of said tubular member, said handles being pivoted together near the center of their lengths, each handle of said pair being pivotally coupled to a corresponding short link which is pivotally coupled to said second surface of said piston whereby closure of said finger rings forces said piston against said pliable tube; and an operator removably attached to the second end of said flexible arm, said operator including a scissors having a pair of blades having first and second ends, said blades being closed by the movement of an operator piston in contact with said sealed pliable tube. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification