Micro-saw blade for bone-cutting surgical saws

• US 9,414,845 B2
• Filed: 12/23/2014
• Issued: 08/16/2016
• Est. Priority Date: 06/11/2008
• Status: Active Grant

• Current Assignee: Medtronic Ps Medical Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Ps Medical Incorporated (Medtronic Plc)
• Inventors: Boykin, Christopher M.
• Primary Examiner(s): Sevilla, Christian
• Application Number:
  US14/581,328
• Publication Number:
  US 20150112347A1
• Time in Patent Office: 602 Days
• Field of Search: 301/22, 303/51, 303/55, 838/35, 836/981.1
• US Class Current: 1/1
• 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: A61B 17/1613 Component parts
• CPC Class Codes: A61C 3/12 Tooth saws
• CPC Class Codes: B23D 61/006 Oscillating saw blades
• CPC Class Codes: B23D 61/125 Composite body, e.g. laminated, body of diverse material
• CPC Class Codes: B27B 19/006 with oscillating saw blades; Hand saws with oscillating saw blades
• CPC Class Codes: B27B 33/02 Structural design of saw blades or saw teeth
• CPC Class Codes: B27B 5/32 Devices for securing circular saw blades to the saw spindle

Abstract

A surgical cutting blade for cutting bone material when the blade is coupled to a hand-held surgical saw having protrusions extending therefrom that interface with the cutting blade. The cutting blade includes a distal end comprising a plurality of cutting teeth and a shank portion adjacent the distal end. It also includes a proximal end adjacent the shank portion. The proximal end is shaped to attach to the surgical saw and includes an upper substantially planar surface and a lower substantially planar surface and a side edge extending between the upper and lower planar surfaces. The side edge at least in part defines an outer perimeter extending about the proximal end. The outer perimeter includes a plurality of indentations forming openings configured to receive and interface with the protrusions of the surgical saw in a manner that the protrusions cooperatively impart motion to drive the blade.

Claims

1. A cutting blade set for cutting bone material when a blade is coupled to a surgical saw that is configured to selectively interface with each blade of the cutting blade set, the cutting blade set comprising:

a plurality of cutting blades, each blade of the plurality of cutting blades comprising;

a distal end comprising a plurality of cutting teeth, the distal end of each cutting blade of the plurality of cutting blades having a different thickness;

a shank portion adjacent the distal end; and

a proximal end adjacent the shank portion, the proximal end being sized and shaped to interface with the surgical saw, the proximal end of each cutting blade of the plurality of cutting blades having substantially the same thickness.

2. The cutting blade set of claim 1, wherein the proximal end of each of the plurality of cutting blades includes a portion formed of a first material and being overmolded with a second material having a hardness less than a hardness of the first material.

3. The cutting blade set of claim 1, wherein each of the plurality of blades includes openings in an outer perimeter configured to receive and interface with protrusions of the surgical saw in a manner that the protrusions cooperatively impart motion to drive the cutting blade.

4. The cutting blade set of claim 2, wherein the first material is a surgical steel and the second material is a polymer material.

5. The cutting blade set of claim 2, wherein each overmold of each cutting blade is colored with a different color to provide information to a surgeon.

6. The cutting blade set of claim 5, wherein the information includes blade size, tooth type, or blade thickness.

7. The cutting blade set of claim 2, wherein the proximal end formed of the first and second materials includes an upper substantially planar surface, a lower substantially planar surface and a side edge extending between the upper and lower planar surfaces, the side edge at least in part defining an outer perimeter extending about the proximal end, the outer perimeter including a plurality of indentations forming openings configured to receive and interface with protrusions of the surgical saw in a manner that the protrusions cooperatively impart motion to drive the cutting blade.

8. The cutting blade set of claim 2, wherein the proximal end defines a slot opening extending into the proximal end along a longitudinal axis of the cutting blade and formed into the first material, the second material being overmolded to either form a tapered opening into the slot opening, partially enclose an inner end of the slot opening, or completely enclose the slot opening.

9. The cutting blade set of claim 1, wherein the proximal end includes an upper substantially planar surface, a lower substantially planar surface and a side edge extending between the upper and lower planar surfaces, the side edge at least partially defining an outer perimeter extending about the proximal end, the outer perimeter including a plurality of indentations forming openings configured to receive and interface with protrusions of the surgical saw in a manner that the protrusions cooperatively impart motion to drive the cutting blade.

10. A cutting blade set for cutting bone material when a blade is coupled to a surgical saw that is configured to selectively interface with each blade of the cutting blade set, the cutting blade set comprising:

a plurality of cutting blades, each blade of the plurality of the cutting blades comprising;

a first material forming,

a distal end having a plurality of cutting teeth,

a shank portion adjacent the distal end, and

a proximal end adjacent the shank portion, the proximal end shaped to interface with the surgical saw; and

a second material overmolded at least over the proximal end of the first material, wherein each cutting blade of the plurality of cutting blades formed of the first material has a different thickness and each overmold of each cutting blade of the plurality of cutting blades have substantially the same thickness.

11. The cutting blade set of claim 10, wherein the second material has a hardness less than a hardness of the first material.

12. The cutting blade set of claim 11, wherein the first material is a steel and the second material is a polymer.

13. The cutting blade set of claim 10, wherein each cutting blade of the plurality of cutting blades includes openings in an outer perimeter configured to receive and interface with protrusions of the surgical saw in a manner that the protrusions cooperatively impart motion to drive the cutting blade.

14. The cutting blade set of claim 10, wherein each overmold of the second material is colored with a different color to provide information to a surgeon.

15. The cutting blade set of claim 10, wherein the proximal end includes an upper substantially planar surface, a lower substantially planar surface and a side edge extending between the upper and lower planar surfaces, the side edge at least in part defining an outer perimeter extending about the proximal end, the outer perimeter including a plurality of indentations forming openings configured to receive and interface with protrusions of the surgical saw in a manner that the protrusions cooperatively impart motion to drive the cutting blade.

16. The cutting blade set of claim 10, wherein the second material is overmolded over the proximal end and a portion of the shank portion.

17. The cutting blade set of claim 10, wherein the proximal end defines a slot opening extending into the proximal end along a longitudinal axis of the cutting blade and formed into the first material, the second material being overmolded to either form a tapered opening into the slot opening, partially enclose an inner end of the slot opening, or completely enclose the slot opening.

18. A cutting blade set for cutting bone material when a blade is coupled to a surgical saw that is configured to selectively interface with each blade of the cutting blade set, the cutting blade set comprising:

a first cutting blade having a first distal end having a first thickness and a first plurality of cutting teeth,

a first shank portion adjacent to the first distal end, and

a first proximal end adjacent to the first shank portion having a second thickness, the first proximal end being sized and shaped to interface with the surgical saw; and

a second cutting blade having a second distal end having a third thickness and a second plurality of the cutting teeth,

a second shank portion adjacent the second distal end, and

a second proximal end adjacent to the second shank portion having a fourth thickness, the second proximal end being sized and shaped to interface with the surgical saw;

wherein the first and third thicknesses are different and the second and fourth thicknesses are the same.

19. The cutting blade set of claim 18, wherein the first proximal end and the second proximal end of the first cutting blade and the second cutting blade include a portion formed of a first material and being overmolded with a second material having a hardness less than a hardness of the first material.

20. The cutting blade set of claim 19, wherein the overmold of the first proximal end is a first color and the overmold of the second proximal end is a second color, the first color different from the second color, the first color corresponding to an indication of the first thickness and the second color corresponding to an indication of the third thickness.