Multi purpose orthopedic ratcheting forceps

• US 4,896,661 A
• Filed: 02/05/1988
• Issued: 01/30/1990
• Est. Priority Date: 02/05/1988
• Status: Expired due to Term

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Pfizer Inc.
• Inventors: Bogert, Roy, Mears, Dana C., Chapman, Michael W., Edwards, Charles C.
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US07/152,455
• Time in Patent Office: 725 Days
• Field of Search: 128/346, 128/321, 128/322, 128/92 VZ, 128/345, 128/17, 128/18, 128/303 R, 604/106, 433/159, 81/318, 81/319, 81/325, 81/328, 81/423, 81/427.5, 81/337, 81/338
• US Class Current: 606/86.00R
• CPC Class Codes: A61B 17/2812 with a single pivotal connection A61B17/29 takes precedence
• CPC Class Codes: A61B 17/8004 with means for distracting or compressing the bone or bones
• CPC Class Codes: A61B 17/8866 for gripping or pushing bones, e.g. approximators joint distractors A61B17/025
• CPC Class Codes: A61B 2017/2837 with a locking ratchet

Abstract

A forceps for use in orthopedic surgical procedures having readily interchangeable tip elements and a reversible ratchet mechanism, for controlling the tip elements. A variety of tips for compression and distraction are provided. The ratchet mechanism permits controlled increments of force to be applied to the tips.

Claims

1. A forceps device comprising:

(a) a first elongate arm having a hand grip portion at a proximal end;

(b) a second elongate arm having a hand grip portion at a proximal end;

(c) said first and second arms being joined at a pivot point to form opposing co-planar jaw portions at their distal ends;

(d) said jaw portions being adapted to removably secure interchangeable tip portions;

(e) said first arm having a ratchet toothed member secured thereto intermediate said pivot point and said hand grip portion;

(f) said second arm having a multiposition pawl mechanism positioned to engage said ratchet toothed member such that in one position of said pawl, said arms pivot to ratchet open said jaw portions, in a second position of said pawl, said arms pivot to ratchet closed said jaw portions and in a third position, said pawl is disengaged from said ratchet toothed member, whereby suitable tip portions are ratcheted to compress or distract a work piece.

2. The forceps device of claim 1 wherein said hand grip portions are shaped to form rounded ovoid openings with the widest portion at the proximal end and further comprise curved finger rest portions at both the distal and proximal ends of said openings.

3. The forceps device of claim 1 wherein said jaw portions removably secure said tip portions by way of a spring loaded sleeve, ball detent and groove mechanism.