Vibration transmitter and ultrasonic treatment device

Patent metadata

Field	Value
Publication number	US-12408940-B2
Application number	US-202318328328-A
Country	US
Kind code	B2
Filing date	Jun 2, 2023
Priority date	Dec 14, 2017
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A vibration transmitter includes: a first rod including a fitting hole extending along the longitudinal axis thereof; and a second rod attached to a distal end portion of the first rod by a fitting portion fitted into the fitting hole in a state where a compressed surface pressure is received from the inner surface of fitting hole. The first rod includes: a first region in which the fitting portion is fitted into the fitting hole; and a second region positioned proximal of the first region. In the first region of the first rod, a crystal grain diameter is larger than that in the second region of the first rod.

First claim

The invention claimed is:

1. A probe comprising:
a first rod including crystals; and
a second rod,
wherein the first rod includes:
a first region where the first rod and the second rod overlap; and
a second region, and

wherein a crystal grain diameter of the crystals in the first region is larger than a crystal grain diameter of the crystals in the second region.

2. The probe according to claim 1 , wherein in the second region, the first rod and the second rod do not overlap.

3. The probe according to claim 1 , wherein the first rod extends along a longitudinal axis, and wherein, in the first region, the first rod and the second rod overlap in a direction intersecting the longitudinal axis.

4. The probe according to claim 3 , wherein the first rod extends from a distal end to a proximal end and includes a hole extending along the longitudinal axis.

5. The probe according to claim 4 , wherein the second rod includes an insertion portion inserted into the hole.

6. The probe according to claim 5 , wherein a gap is formed between an end of the insertion portion and a bottom surface of the hole.

7. The probe according to claim 5 , wherein the insertion portion has a smaller width dimension than the second rod.

8. The probe according to claim 5 , wherein the insertion portion is a portion of a maximum cross-section area portion of the second rod at which a cross-sectional area of the second rod is largest.

9. The probe according to claim 4 , wherein the hole extends from the distal end toward the proximal end.

10. The probe according to claim 5 , wherein the insertion portion is inserted into the hole in a state where an outer surface of the insertion portion is fitted to an inner surface of the hole.

11. The probe according to claim 10 , wherein the hole extends along the longitudinal axis from the distal end toward the proximal end.

12. The probe according to claim 1 , wherein the first rod is located proximally relative to the second rod.

13. The probe according to claim 1 , wherein the first region is located distally relative to the second region.

14. The probe according to claim 1 , wherein a material of the first rod is different from a material of the second rod.

15. The probe according to claim 14 , wherein the material of the first rod is an aluminum alloy, and wherein the material of the second rod is a titanium alloy.

16. The probe according to claim 15 , wherein the first rod is located proximally relative to the second rod.

17. The probe according to claim 2 , wherein a material of the first rod is different from a material of the second rod.

18. The probe according to claim 17 , wherein the material of the first rod is an aluminum alloy, and wherein the material of the second rod is a titanium alloy.

19. An ultrasonic treatment device comprising:
a transducer configured to generate ultrasonic vibration;
a housing in which the transducer is provided; and
a probe, the probe comprising:
a first rod including crystals; and
a second rod,

wherein the first rod includes:
a first region where the first rod and the second rod overlap; and
a second region, and

wherein a crystal grain diameter of the crystals in the first region is larger than a crystal grain diameter of the crystals in the second region.

Assignees

• Olympus Corp

Inventors

• Maeda Yasuhiro
• Shimamura Yukihiko
• Yamada Masashi

Classifications

• A61B2017/320032

  Details of the rotating or oscillating shaft, e.g. using a flexible shaft · CPC title

• A61B2017/320089

  node location · CPC title

• A61B2017/320094

  additional movable means performing clamping operation · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B2017/00477

  Coupling (A61B2017/0046 takes precedence) · CPC title