Multi-position ratchet mechanism

Details Multi-position ratchet mechanism Multi-position ratchet mechanism

A - Human Necessities

61

B

128/4

A61B 1/32 (2006.01) A61B 17/02 (2006.01)

Patent

CA 1188175

Multi-Position Ratchet Mechanism Abstract A multi-position ratchet mechanism for holding a surgical retractor blade which permits a retractor blade to be rotated into the wound and retracted at the same time to duplicate the natural "toe-in" method of retraction achieved with the hand. The ratchet mechanism includes a ratchet holder to which is pivotably attached a ratchet pivot housing, The retractor blade is mounted in an opening projecting through ratchet pivot housing and held in position by a retractor pawl attached to the ratchet pivot housing. The ratchet pivot housing also has a curved ratchet which depends into a cooperating slot in the ratchet holder and engages a pivot pawl rotatably mounted and spring biased into the ratchet slot. The holder includes a transverse slot which slides onto an oval ring which is mounted about the incision site.

413071

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