IP Library › Granted Patent US 12,402,905
Granted Patent B2
US 12,402,905 · App. 17/402,295 · Granted Sep 2, 2025

Serrated ultrasonic cutting blade with varied tooth pitch

Inventors: Elad Levy (Amherst, NY); Timothy O'Connor (Boca Raton, FL); Dan Voic (Cedar Grove, NJ)
Assignee: Misonix, LLC
A61B17/320068A61B2017/320077
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Quick Facts
Patent No.
US 12,402,905
App. No.
17/402,295
Granted
Sep 2, 2025
Kind
B2
Abstract

An ultrasonic blade is provided along a convexly arcuate distal edge and at least one longitudinal edge with a continuous array of teeth including a first subset of teeth along the convexly arcuate distal edge and a second subset of teeth along the at least one straight longitudinal edge. The teeth along the convexly arcuate distal edge differ in tooth length and optionally in inter-tooth separation or pitch from the teeth along one or both of the longitudinal edges.

Claims (29)

1. An ultrasonic surgical tool, comprising:

a substantially planar blade body having a pair of opposed lateral surfaces, a pair of straight longitudinal edges and a convexly arcuate distal edge contiguous with said straight longitudinal edges; and

a shank integral on a distal side with said blade body and provided at a proximal side with a connector for operatively linking the blade to a source of ultrasonic mechanical vibrations,

said substantially planar blade body defining a through slot that extends longitudinally and axially along a portion of the substantially planar blade body, the through slot being configured to deliver a fluid to an area adjacent to the substantially planar blade body,

said substantially planar blade body including an array of teeth disposed along said convexly arcuate distal edge and at least one straight longitudinal edge of said pair of straight longitudinal edges, the array of teeth including a first subset of teeth disposed along said convexly arcuate distal edge and a second subset of teeth disposed along said at least one straight longitudinal edge of said pair of straight longitudinal edges.

2. The ultrasonic surgical tool defined in claim 1 , wherein said first tooth length and said first inter-tooth gap depth are each uniform among said first subset of teeth, and said second tooth length and said second inter-tooth gap depth being each uniform among said second subset of teeth.

3. The ultrasonic surgical tool defined in claim 2 , wherein said first tooth length and said first inter-tooth gap depth are smaller than said second tooth length and said second inter-tooth gap depth, respectively.

4. The ultrasonic surgical tool defined in claim 3 , wherein said first tooth length is between about 0.60 and about 0.85 times said second tooth length, said first inter-tooth gap depth being between about 0.60 and about 0.85 times said second inter-tooth gap depth.

5. The ultrasonic surgical tool defined in claim 4 , wherein said first tooth length is about 0.80 times said second tooth length, said first inter-tooth gap depth being about 0.80 times said second inter-tooth gap depth.

6. The ultrasonic surgical tool defined in claim 3 , wherein each tooth of said array of teeth includes isometric opposing edges that form a common angle therebetween, each tooth of said first subset of teeth having a first pitch and each tooth of said second subset of teeth having a second pitch, said first pitch being smaller than said second pitch.

7. The ultrasonic surgical tool defined in claim 1 , wherein said first tooth length and said first inter-tooth gap depth are smaller than said second tooth length and said second inter-tooth gap depth, respectively.

8. The ultrasonic surgical tool defined in claim 7 , wherein said first tooth length is between about 0.60 and about 0.85 times said second tooth length, said first inter-tooth gap depth being between about 0.60 and about 0.85 times said second inter-tooth gap depth.

9. The ultrasonic surgical tool defined in claim 8 , wherein said first tooth length is about 0.80 times said second tooth length, said first inter-tooth gap depth being about 0.80 times said second inter-tooth gap depth.

10. The ultrasonic surgical tool defined in claim 7 , wherein each tooth of said array of teeth includes isometric opposing edges that form a common angle therebetween, each tooth of said first subset of teeth having a first pitch and each tooth of said second subset of teeth having a second pitch, said first pitch being smaller than said second pitch.

11. The ultrasonic surgical tool defined in claim 1 , wherein each tooth of said array of teeth includes isometric opposing edges that form a common angle therebetween, each tooth of said first subset of teeth having a first pitch and each tooth of said second subset of teeth having a second pitch different from said first pitch.

12. The ultrasonic surgical tool defined in claim 1 , wherein said first subset of teeth having a first tooth length and a first inter-tooth gap depth, said second subset of teeth having a second tooth length and a second inter-tooth gap depth, said first tooth length being different from said second tooth length, said first inter-tooth gap depth being different from said second inter-tooth gap depth.

13. An ultrasonic surgical tool, comprising:

a substantially planar blade body having a pair of opposed lateral surfaces, a pair of straight longitudinal edges and a convexly arcuate distal edge contiguous with said straight longitudinal edges; and

a shank integral on a distal side with said blade body and provided at a proximal side with a connector for operatively linking the blade to a source of ultrasonic mechanical vibrations,

said substantially planar blade body defining a through slot that extends longitudinally and axially along a portion of the substantially planar blade body, the through slot being configured to deliver a fluid to an area adjacent to the substantially planar blade body,

said substantially planar blade body including an array of teeth disposed along said convexly arcuate distal edge and at least one straight longitudinal edge of said pair of straight longitudinal edges, the array of teeth including a first subset of teeth disposed along said convexly arcuate distal edge and a second subset of teeth disposed along at least one straight longitudinal edge of said pair of straight longitudinal edges,

said first subset of teeth exhibiting a first inter-tooth separation or pitch and said second subset of teeth having a second inter-tooth separation, said first inter-tooth separation or pitch being different from said second inter-tooth separation or pitch.

14. The ultrasonic surgical tool defined in claim 13 , wherein said first inter-tooth separation or pitch is uniform among said first subset of teeth, and said second inter-tooth separation or pitch is uniform among said second subset of teeth.

15. The ultrasonic surgical tool defined in claim 14 , wherein said first inter-tooth separation or pitch is smaller than said second inter-tooth separation or pitch.

16. The ultrasonic surgical tool defined in claim 15 , wherein each tooth of said array of teeth includes isometric opposing edges that form a common angle therebetween.

17. The ultrasonic surgical tool defined in claim 14 , wherein said first inter-tooth separation or pitch is between 0.60 and 0.85 times said second inter-tooth separation or pitch.

18. The ultrasonic surgical tool defined in claim 13 , wherein said first inter-tooth separation or pitch is smaller than said second inter-tooth separation or pitch.

19. The ultrasonic surgical tool defined in claim 18 , wherein said first inter-tooth separation or pitch is between 0.60 and 0.85 times said second inter-tooth separation or pitch.

20. The ultrasonic surgical tool defined in claim 13 , wherein each tooth of said array of teeth includes isometric opposing edges that form a common angle therebetween.

Assignments (5)
RELEASE OF SECURITY INTEREST Recorded Aug 4, 2025
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: MISONIX OPCO, LLC
Reel/Frame 072338/0395 →
SECURITY INTEREST Recorded Aug 1, 2025
From: MISONIX, LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT
Reel/Frame 072298/0866 →
MERGER AND CHANGE OF NAME Recorded Sep 14, 2022
From: OYSTER OPCO MERGER SUB, LLC; MISONIX OPCO, INC.
To: MISONIX OPCO, LLC
Reel/Frame 061433/0736 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 8, 2022
From: LEVY, ELAD I.; O'CONNOR, TIMOTHY; VOIC, DAN
To: MISONIX, LLC
Reel/Frame 060743/0737 →
SECURITY INTEREST Recorded Nov 11, 2021
From: MISONIX OPCO, LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 058809/0950 →
Continuity (1)
Related Publication 20230048993A1 · Feb 16, 2023
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