SURGICAL SAGITTAL SAW BLADE WITH FEATURES THAT FACILITATE DRIVING THE BLADE IN A CROSSED LOOP PATTERN

摘要

A surgical sagittal saw blade with first and second elongated openings. The openings have major axes that are angled relative to each other. The openings are arranged to receive draw for pivoting a blade in a sagittal plane. Each opening receives a separate drive member integral with the saw to which the blade is mounted. The action of one drive member in a first opening results in the proximal to distal reciprocation of the blade. The action of a the second drive member in the second opening results in the back and forth pivoting of the blade around an axis that extends through the plane of the blade. The blade has a constraining feature that engages a complementary constraining feature integral with the saw. The engagement of the constraining features limits the reciprocal and pivotal movement of the blade.

主权项

1. A surgical sagittal saw blade, said blade including:
a blade body that lies in a plane, said blade body having opposed proximal and distal ends and a longitudinal axis that extends between the proximal and distal ends, wherein said blade body is further formed to have:
a first elongated opening located forward of the proximal end of said blade body, the first elongated opening shaped to receive a first drive member attached to the saw so that the movement of the first drive member in the first elongated opening pivots said blade body around an axis that extends through the plane of the blade, the first elongated opening having a major axis that is at an acute angle relative to the longitudinal axis of the blade that is a maximum of 45°;a second elongated opening located forward of the proximal end of said blade body, the second elongated opening shaped to receive a second drive member attached to the saw so that the movement of the second drive member reciprocates the saw proximally to distally, the second elongated opening having a major axis that is angled relative to the major axis of the first elongate opening that that is at an acute angle relative to the longitudinal axis of the blade that is a minimum of 45°; anda constraining feature formed integrally with said blade body that is configured to engage a static feature of the saw so that the engagement of the features constrains the extent to which said blade body is able to engage in both pivotal motion and reciprocating motion; and teeth that extend forward from the distal end of blade body.