Surgical saw blade

• US 4,637,391 A
• Filed: 04/03/1986
• Issued: 01/20/1987
• Est. Priority Date: 04/03/1986
• Status: Expired due to Fees

• Current Assignee: Allen P. Schlein
• Original Assignee: Allen P. Schlein
• Inventors: Schlein, Allen P.
• Primary Examiner(s): Thaler, Michael H.
• Application Number:
  US06/847,693
• Time in Patent Office: 292 Days
• Field of Search: 128/317, 128/91 A, 30/377, 30/133, 30/347, 30/355, 30/166 R, 30/166 A, 30/388, 30/371
• US Class Current: 606/172
• 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: A61F 15/02 Devices for cutting bandages of any kind, e.g. shears, cast-cutting saws
• CPC Class Codes: B23D 61/006 Oscillating saw blades
• CPC Class Codes: B23D 61/025 Details of saw blade body

Abstract

A saw blade adapted for attachment to a power operated surgical saw having teeth disposed along at least a portion of its periphery and having a centrally located saw connector receiving opening and at least one elongated slot disposed between the central opening and the cutting teeth. A cutting depth stop is releasably secured to one side of the blade and extends perpendicularly outwardly therefrom to be movable to desired adjusted positions along the length of the elongated slot. Adjustment of the position of the stop can be performed without tools and even when the saw blade is hot.

Claims

1. A surgical saw blade for attachment to a power operated oscillatory surgical saw comprising:

a blade portion having teeth disposed along at least a portion of an outer periphery of same and defining an arcuate cutting surface thereat, said blade portion having a central saw connector-receiving opening therethrough for securement of said blade to said saw, and also having an elongated slot therethrough disposed with its long axis on a radius of said blade portion extending between said central opening and the arcuate cutting surface of said blade portion, and

a cutting depth stop including a cylindrical metal sleeve surrounding a hollow cylindrical inner sleeve formed of thermal insulating plastics material and extending outwardly from one side of said blade in a direction perpendicular to the plane of said portion and releasably secured at a desired adjusted position along said elongated slot by a bolt extending through said slot from the other side of said blade portion and threadably engaging said cylindrical inner sleeve, the length of said metal sleeve being sufficient to preclude ingress of said cutting teeth beyond a depth defined by the distance between said cutting teeth and a surface of said metal sleeve closest said teeth.

2. A saw blade as defined in claim 1 wherein said blade portion is circular.

3. A saw blade as defined in claim 2, wherein said central opening is generally circular in shape with at least one pair of oppositely positioned slots extending outwardly therefrom, and said blade portion has at least two elongated slots therethrough disposed on opposite sides of said central opening with their long axes lying along a diameter of said blade which passes through said outwardly extending slots.

4. A saw blade as defined in claim 1 wherein the end of said inner sleeve closest said blade is formed with a shoulder having approximately the same outer diameter as said metal sleeve for enhancing the securement of said depth stop to said blade portion and for thermally insulating said metal sleeve from said blade.

5. A saw blade as defined in claim 4 wherein said inner sleeve is formed of Delrin.

6. A surgical saw blade for attachment to a power operated oscillatory surgical saw comprising:

a circular blade having teeth disposed along the outer periphery of same and defining a cutting surface threat, said blade having a central saw connector-receiving opening therethrough for securement of said blade to said saw and also having a radially oriented elongated slot disposed between said central opening and the cutting surface of said blade, and

a cutting depth stop extending outwardly from and perpendicularly to the side of said blade opposite the side from which the saw connector is received, said cutting depth stop comprising a cylindrical outer sleeve formed of metal surrounding a hollow cylindrical inner sleeve formed of thermal insulating plastics material, and a bolt extending through said elongated slot from the side of said blade from which the saw connector is received and threadably engaging said inner sleeve for releasably securing said stop at a desired adjusted position along said elongated slot, the length of said outer sleeve being sufficient to limit ingress of said cutting teeth beyond a depth defined by the distance between said cutting teeth and the surface of said outer sleeve closest said teeth.

7. A saw blade as defined in claim 6 wherein the end of said inner sleeve closest said blade is formed with a shoulder having approximately the same outer diameter as said outer sleeve for enhancing the thermal insulation of said outer sleeve from said blade and the securement of said stop to said blade.

8. A saw blade as defined in claim 7 wherein said plastics material is Delrin.

9. A saw blade as defined in claim 7 wherein the central opening in said blade has at least one pair of oppositely positioned slots extending radially outwardly therefrom, and wherein said blade has at least two elongated slots therethrough disposed on opposite sides of said central opening with their long axes lying along a diameter of said blade which passes through said outwardly extending slots.