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Gripping unit for application in minimally invasive surgery

  • US 6,053,933 A
  • Filed: 08/07/1997
  • Issued: 04/25/2000
  • Est. Priority Date: 08/10/1996
  • Status: Expired due to Fees
First Claim
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1. In a device for minimally invasive surgery, the device having an elongated shaft (8) defining a longitudinal direction and adapted to receive an optional additional instrument (7, 7a), an operating handle (6) at a first end of the shaft, and a gripping unit extending from a second end of the shaft;

  • the improvement wherein the gripping unit comprises;

    a base section (4) extending to the second end and terminating in a stationary jaw (2) rigidly attached thereto, the base section and the jaw comprising a first channel (9) extending in the longitudinal direction to receive the additional instrument (7, 7a) therein;

    a push/pull rod (3) extending to the second end and connected to a movable jaw (1, 1a) via a pin joint (51) having a pin-joint axis; and

    a coulisse (11a, 11b,

         21) coupling the movable jaw to the stationary law, whereby the movable jaw (1, 1a) is rotatable generally about a jaw axis of the movable law which is generally parallel to the pin-joint axis;

    wherein the stationary law comprises a recess (21), the movable law comprises a pair of prolongations (11a, 11b), and the coulisse comprises the recess (21) and the pair of prolongations (11a, 11b) being rotatable fitted therein; and

    wherein the prolongations are formed on both sides of the first channel of the stationary law (2), whereby the channel is unobstructed;

    whereby opening and closing of the movable jaw in relation to the stationary jaw is actuatable by a motion of the push/pull rod in the longitudinal direction.

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