Rotatable medical device

Patent metadata

Field	Value
Publication number	US-12016524-B2
Application number	US-202017137556-A
Country	US
Kind code	B2
Filing date	Dec 30, 2020
Priority date	Jan 9, 2020
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

Medical devices and related methods are described. The medical device may include a shaft, a handle housing a proximal portion of the shaft, and a lock having a first configuration and a second configuration. In the first configuration of the lock, the shaft may be rotatable about a longitudinal axis of the shaft relative to the handle, and, in the second configuration of the lock, the shaft may be stationary relative to the handle.

First claim

What is claimed is:

1. A medical device comprising:
a shaft;
a handle housing a proximal portion of the shaft; and
a lock having a first configuration and a second configuration;
wherein, in the first configuration of the lock, the shaft is rotatable about a longitudinal axis of the shaft relative to the handle, and, in the second configuration of the lock, the shaft is stationary relative to the handle,
wherein the lock includes a collar and a plurality of deflectors,
wherein the plurality of deflectors surround the proximal portion of the shaft,
wherein the collar surrounds the plurality of deflectors and the proximal portion of the shaft,
wherein the collar includes a plurality of projections that project radially inward toward a longitudinal axis of the handle,
wherein rotation of the collar in a first direction places the lock into the first configuration, and wherein rotation of the collar in a second direction opposite to the first direction places the lock into the second configuration,
wherein the shaft includes a proximal flange and a distal flange, wherein a portion of the shaft positioned between the proximal flange and the distal flange includes a diameter, wherein the diameter of the portion of the shaft is lesser than a diameter of the distal flange and is lesser than a diameter of the proximal flange, and
wherein, when the collar is in the second configuration, each deflector of the plurality of deflectors is pressed against the proximal flange.

2. The medical device of claim 1 , wherein in the second configuration, engagement of the plurality of deflectors to the shaft provides sufficient friction force to keep the shaft stationary relative to the handle.

3. The medical device of claim 1 , wherein the plurality of deflectors connect a proximal portion of the handle to a distal portion of the handle.

4. The medical device of claim 1 , wherein the plurality of projections project from an inner circumferential surface of the collar.

5. The medical device of claim 1 , wherein, in the first configuration, the plurality of projections of the collar is spaced apart from the plurality of deflectors allowing radial movement of the plurality of deflectors between the collar and the shaft, and wherein, in the second configuration, the plurality of projections pushes the plurality of deflectors against the shaft so that the shaft is held stationary relative to the handle.

6. The medical device of claim 5 , wherein the plurality of deflectors flex radially inward toward the shaft in the second configuration.

7. A method of positioning a shaft of a medical device, comprising:
inserting a distal end of the shaft of the medical device into a body of a subject, wherein the medical device comprises the shaft, a handle housing a proximal portion of the shaft, and a lock having a first configuration and a second configuration, wherein in the first configuration of the lock, the shaft is rotatable about a longitudinal axis of the shaft relative to the handle, and, in the second configuration of the lock, the shaft is stationary relative to the handle, wherein the lock includes a collar, a plurality of deflectors, and a plurality of projections, wherein the shaft includes a proximal flange and a distal flange, wherein a portion of the shaft positioned between the proximal flange and the distal flange includes a diameter, wherein the diameter of the portion of the shaft is lesser than a diameter of the distal flange and is lesser than a diameter of the proximal flange, wherein, when the collar is in the second configuration, each deflector of the plurality of deflectors is pressed against the proximal flange, and after the insertion step:
unlocking the handle from the shaft by rotating the collar in a first direction, wherein rotating the collar in the first direction disengages the plurality of deflectors from the plurality of projections;
rotating the shaft about the longitudinal axis of the shaft relative to the handle; and
locking the handle to the shaft by rotating the collar in a second direction opposite to the first direction, such that the plurality of deflectors engage with the plurality of projections, wherein the plurality of deflectors is pressed radially inward toward the longitudinal axis of the shaft by the plurality of projections.

8. The method of claim 7 , wherein engagement of the plurality of deflectors with the plurality of projections applies a frictional force to the shaft.

9. The method of claim 7 , wherein the plurality of deflectors extend longitudinally from a proximal portion of the handle to a distal portion of the handle.

10. The method of claim 7 , wherein the plurality of projections are positioned relative to the plurality of deflectors so that rotating the collar in the second direction facilitates engagement of corresponding complementary surfaces of the plurality of projections and the plurality of deflectors.

11. A medical device comprising:
a shaft;
a handle housing a proximal portion of the shaft; and
a lock having a first configuration and a second configuration;
wherein, in the first configuration of the lock, the shaft is rotatable about a longitudinal axis of the shaft relative to the handle, and, in the second configuration of the lock, the shaft is stationary relative to the handle,
wherein the lock includes a collar and a plurality of deflectors,
wherein the plurality of deflectors connect a proximal portion of the handle to a distal portion of the handle,
wherein the shaft includes a proximal flange and a distal flange, wherein a portion of the shaft positioned between the proximal flange and the distal flange includes a diameter, wherein the diameter of the portion of the shaft is lesser than a diameter of the distal flange and is lesser than a diameter of the proximal flange, and
wherein, when the collar is in the second configuration, each deflector of the plurality of deflectors is pressed against the proximal flange.

12. The medical device of claim 11 , wherein the plurality of deflectors extend longitudinally from the proximal portion of the handle to the distal portion of the handle.

13. The medical device of claim 12 , wherein the collar includes a plurality of projections that project radially inward toward the shaft, wherein, in the first configuration, each of the plurality of projections of the collar is spaced apart from the plurality of deflectors allowing radial movement of the plurality of deflectors between the collar and the shaft, and wherein, in the second configuration, the plurality of projections pushes each of the plurality of deflectors against the shaft so that the shaft is held stationary relative to the handle.

14. The medical device of claim 13 , wherein the plurality of deflectors flex radially inward toward the shaft in the second configuration.

15. The medical device of claim 14 , wherein the plurality of deflectors are not flexed radially inward toward the shaft in the first configuration.

16. The medical device of claim 13 , wherein the plurality of projections and the plurality of deflectors include complementary surfaces to one another.

17. The medical device of claim 13 , wherein the plurality of deflectors provide frictional force to the shaft in the second configuration.

Assignees

• Boston Scient Scimed Inc

Inventors

• Nguyen Man Minh
• Brechbiel Scott E
• Wilder Evan
• Weldon James
• Powell Sean

Classifications

• A61B1/00147

  Holding or positioning arrangements · CPC title

• A61B1/31

  for the rectum, e.g. proctoscopes, sigmoidoscopes {, colonoscopes} · CPC title

• A61B1/307

  for the urinary organs, e.g. urethroscopes, cystoscopes · CPC title

• A61B1/2736

  Gastroscopes · CPC title

• A61B1/2676

  Bronchoscopes · CPC title