Powered surgical tool with an oscillating saw blade

Patent metadata

Field	Value
Publication number	US-12349925-B2
Application number	US-202318183715-A
Country	US
Kind code	B2
Filing date	Mar 14, 2023
Priority date	Mar 14, 2023
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

In general, devices, systems, and methods for assembly and operation of a handheld oscillating surgical saw are provided. In exemplary embodiments, a surgical tool includes a handpiece comprising a coupling head that includes a slot and a magnet, the slot being configured to releasably receive a surgical saw blade configured to cut bone, and the magnet being configured to magnetically attract the saw blade, wherein the coupling head is configured to move between a first position, in which the slot has a first height and the coupling head is configured to selectively receive the surgical saw blade therein and release the surgical saw blade therefrom, and a second position, in which the slot has a second height that is less than the first height and the coupling head is configured to fixedly seat the saw blade therein.

First claim

What is claimed is:

1. A surgical tool, comprising:
a handpiece; and
a saw head operatively coupled to the handpiece, the saw head comprising a coupling head that includes a slot and at least one magnet, the slot being configured to releasably receive a surgical saw blade configured to cut bone, and the at least one magnet being configured to magnetically attract the saw blade,
wherein the coupling head is configured to move between a first position, in which the slot has a first height and the coupling head is configured to selectively receive the surgical saw blade therein and release the surgical saw blade therefrom, and a second position, in which the slot has a second height that is less than the first height and the coupling head is configured to fixedly seat the saw blade therein.

2. The tool of claim 1 , wherein the coupling head includes a movable lid configured to be in an upward position with the coupling head in the first position and in a downward position with the coupling head in the second position.

3. The tool of claim 2 , further comprising an actuator configured to be actuated to selectively cause the lid to move between the first and second positions.

4. The tool of claim 2 , wherein the lid includes at least one male member extending therefrom that is configured to, with the coupling head in the second position, engage at least one corresponding female member formed in the saw blade.

5. The tool of claim 1 , further comprising an actuator configured to be actuated to selectively cause the coupling head to move between the first and second positions.

6. The tool of claim 1 , wherein the slot is defined by a bottom surface, a top surface, a left sidewall, a right sidewall, and a distal-facing surface;
the at least one magnet is positioned at the distal-facing surface; and
the saw blade is configured to extend distally out of the slot.

7. The tool of claim 6 , wherein the top surface is defined by a lid configured to be movable relative to the distal-facing surface to move the coupling head between the first and second positions.

8. The tool of claim 1 , wherein the coupling head moving into the second position from the first position is configured to provide feedback to a user indicative of the saw blade being fixedly seated therein, the feedback including at least one of visual feedback, audible feedback, and haptic feedback.

9. The tool of claim 8 , wherein the feedback includes at least the visual feedback;
the tool further comprises the saw blade; and
the saw blade includes an alignment feature configured to align with the coupling head with the coupling head being in the second position.

10. The tool of claim 8 , wherein the feedback includes at least the audible feedback;
the tool further comprises the saw blade; and
magnetic engagement of the saw blade and the magnet is configured to provide the audible feedback.

11. The tool of claim 8 , wherein the feedback includes at least the haptic feedback;
the tool further comprises the saw blade; and
an interaction between a magnetic field produced by the magnet and the saw blade is configured to provide the haptic feedback.

12. The tool of claim 1 , further comprising the saw blade;
wherein the at least one magnet includes a first magnet and a second magnet;
the saw blade includes a U-shaped proximal portion including first and second arms; and
with the coupling head in the second position, the first arm is positioned adjacent to the first magnet and the second arm is positioned adjacent to the second magnet.

13. A surgical method, comprising:
inserting a surgical saw blade into a slot formed between a base and a lid of a coupling head of a surgical tool;
sliding the saw blade proximally into the slot until the saw blade contacts a distal wall of the base and engages at least one magnet at the distal wall; and
closing the lid of the coupling head and thereby securing the saw blade to the coupling head.

14. The surgical method of claim 13 , wherein the saw blade engaging the at least one magnet provides at least one of visual, audible, and haptic feedback to a user.

15. The surgical method of claim 13 , wherein closing the lid of the coupling head comprises clamping the lid on the saw blade.

16. The method of claim 13 , wherein closing the lid comprises actuating an actuator of the surgical tool that causes the lid to move relative to the base.

17. The method of claim 13 , wherein closing the lid comprises engaging at least one male member extending from the lid with at least one corresponding female member formed in the saw blade.

18. The method of claim 16 , further comprising, after closing the lid, actuating the actuator again, thereby causing the lid to move relative to the base, and then removing the saw blade from the slot.

19. The method of claim 17 , wherein the saw blade cannot be removed from the slot until an actuator is actuated again.

20. The surgical method of claim 13 , further comprising, with the saw blade secured to the coupling head, oscillating the saw blade relative to bone.

Assignees

• Depuy Synthes Products Inc

Inventors

• Uhri Patrick
• Schlienger Rolf
• Hermann Markus
• Gisler Stefan

Classifications

• A61B2017/00876

  magnetic · CPC title

• A61B2017/00477

  Coupling (A61B2017/0046 takes precedence) · CPC title

• A61B2017/00115

  with audible or visual output · CPC title

• A61B17/144

  with cutting edges at the side of the saw blades · CPC title

• A61B34/76

  Manipulators having means for providing feel, e.g. force or tactile feedback · CPC title