Surgical saw blade and clamp

• US 5,496,316 A
• Filed: 04/17/1995
• Issued: 03/05/1996
• Est. Priority Date: 02/23/1994
• Status: Expired due to Term

• Current Assignee: Linvatec Corporation (Jefferies Financial Group, Inc.)
• Original Assignee: Hall Surgical DIV of Zimmer Incorporated
• Inventors: Goris, Gregory A.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): MARKOW, SCOTT
• Application Number:
  US08/424,143
• Time in Patent Office: 323 Days
• Field of Search: 606/79, 606/82, 606/171, 606/176, 606/178, 606/177, 30/331, 30/344, 30/339, 403/373, 403/374, 403/409.1, D24/146, D 8/64, D 8/5
• US Class Current: 606/82
• CPC Class Codes: A61B 17/14 Surgical saws A61B17/1637 takes precedence; tooth saws A61C3/12 ; Accessories therefor
• CPC Class Codes: A61B 17/142 with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades
• CPC Class Codes: B23D 51/10 for hand-held or hand-operated devices

Abstract

A blade and clamp obtain a motion free coupling while remaining easily operable. The clamp comprises first and second clamping faces. The second clamping face includes a plurality of tapered lugs arranged in a radial pattern. The blade comprises a plate-like body having a primary U-shaped slot and a plurality of radial U-shaped slots which engage the tapered lugs of the clamp to produce a tight motion free coupling between the blade and clamp.

Claims

1. A blade for attachment to a first and second powered surgical saw via a clamp assembly having a plurality of radially spaced locking pins, said first saw having rectangular pins and said second saw having circular pins, the blade comprising:

a plate-like body having parallel side surfaces and an edge extending around the body and

an end portion for engaging the clamp assembly, the end portion having a primary U-shaped through-slot between the side surfaces and opening to the edge of the blade, the blade further including a plurality of radial through-slots, each radial slot having a longitudinal axis projecting radially from a common axis which is perpendicular to the side surfaces, each longitudinal axis extending from an inner end to an outer end of the respective slot, wherein each of the plurality of radial slots has a first width dimension corresponding to the narrowest dimension perpendicular to its longitudinal axis to adapt the blade for attachment to said first saw, the outer end spaced from the primary U-shaped slot, the outer end having a second width dimension wider than the first width dimension to adapt the blade for attachment to said second saw.

2. A blade according to claim 1 wherein each of said outer ends of said radial slots has a circular periphery, the diameter of said circular periphery defining said second width dimension.

3. A blade according to claim 2 wherein at least one of said radial slots has the inner end communicating with the primary U-shaped slot.

4. A blade according to claim 1 wherein at least one of said radial slots has the inner end communicating with the primary U-shaped slot.

5. A blade for selective attachment to a first or second powered surgical saw, said first powered surgical saw having a clamp assembly comprising a plurality of annularly spaced circular locking pins and said second powered surgical saw having a clamp assembly comprising a plurality of annularly spaced rectangular locking pins, said blade comprising:

a plate-like body having parallel side surfaces and an edge extending around the body; and

an end portion for engaging the clamp assembly of the selected first or second powered surgical saw, the end portion having a primary U-shaped through-slot between the side surfaces and opening to the edge of the blade, the blade further including a plurality of radial slots, each radial slot having a first means adapted to engage one of said rectangular locking pins and a second means adapted to engage one of said circular locking pins.

6. A blade according to claim 5 wherein said first and second means of each radial slot are contiguous.