Rotatable medical device

Patent metadata

Field	Value
Publication number	US-10390854-B2
Application number	US-201815926530-A
Country	US
Kind code	B2
Filing date	Mar 20, 2018
Priority date	Oct 31, 2011
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

Medical devices and methods for using medical devices are disclosed. An example medical device may include a tubular member having a lumen defined therein and a proximal end. A shaft may extend through the lumen. The shaft may have a distal end and a proximal end. An end effector may be attached to the distal end of the shaft. A handle may be coupled to the proximal end of the tubular member. The handle may include a base, a first hub member attached to the base, a second hub member coupled to the first hub member, and a cap attached to the second hub member.

First claim

What is claimed is:

1. A medical device, comprising:
a tubular member having a lumen;
a shaft extending through the lumen; and
a handle at a proximal end of the tubular member, wherein the handle includes:
a base coupled to the shaft,
a first hub member coupled to the base,
a second hub member coupled to the first hub member, and
a cap coupled to the second hub member,

wherein each of the first hub member and the second hub member extends into a cavity defined by the cap, and
wherein engagement between the cap and the second hub member, due to movement of the cap onto the second hub member, compresses the second hub member onto the first hub member, causing an increase in frictional engagement between the second hub member and the first hub member.

2. The medical device of claim 1 , wherein the first hub member has a first chamber configured to receive the base, and the second hub member has a second chamber configured to receive the first hub member.

3. The medical device of claim 1 , wherein the cap includes a tapering threaded interior surface.

4. The medical device of claim 3 , wherein the tapering threaded interior surface includes a helical ridge, and the helical ridge moves farther away from a central longitudinal axis of the cap as the helical ridge extends in a proximal direction.

5. The medical device of claim 3 , wherein the second hub member includes a threaded exterior surface configured to engage the tapering threaded interior surface of the cap.

6. The medical device of claim 1 , wherein the second hub member includes a tapering threaded exterior surface.

7. The medical device of claim 6 , wherein the tapering threaded exterior surface includes a helical ridge, and the helical ridge moves farther away from a central longitudinal axis of the second hub member as the helical ridge extends in a proximal direction.

8. A medical device, comprising:
a tubular member having a lumen;
a shaft extending through the lumen; and
a handle at a proximal end of the tubular member, wherein the handle includes:
a base coupled to the shaft,
a first hub member, wherein the first hub member receives the base,
a second hub member, wherein the second hub member receives the first hub member, and
a cap defining a cavity that receives the second hub member,

wherein a portion of the first hub member extends into the cavity of the cap;
wherein relative rotation between the cap and the second hub member deforms the second hub member, and
wherein deformation of the second hub member increases frictional engagement between the second hub member and the first hub member.

9. The medical device of claim 8 , wherein the second hub member includes an internal surface that engages an external surface the first hub member, and wherein deformation of the second hub member presses the internal surface of the second hub member against the external surface of the first hub member.

10. The medical device of claim 8 , wherein the cap includes a first engagement element, the second hub element includes a second engagement element for engagement with the first engagement element, and only one of the first and second engagement elements tapers.

11. The medical device of claim 10 , wherein each of the first and second engagement elements includes a helical screw thread.

12. The medical device of claim 8 , wherein the cap includes an engagement element for engaging the second hub member, and the engagement element tapers, such that the engagement element moves away from a central longitudinal axis of the cap as the engagement element extends along the cap.

13. The medical device of claim 8 , wherein the second hub member includes an engagement element for engaging the cap, and the engagement element tapers, such that the engagement element moves away from a central longitudinal axis of the second hub member as the engagement element extends along the second hub member.

14. A medical device, comprising:
a tubular member having a lumen;
a shaft extending through the lumen; and
a handle at a proximal end of the tubular member, wherein the handle includes:
a base coupled to the shaft,
a first hub member coupled to the base,
a second hub member coupled to the first hub member, and
a cap coupled to the second hub member, wherein:
each of the first hub member and the second hub member extends into a cavity defined by the cap,
the cap is movable relative to the second hub member between a distal position and a proximal position,
the cap exerts a first compressive force on the second hub member when the cap is in the distal position, resulting in compression of the second hub member against the first hub member,
the cap exerts a second compressive force on the second hub member when the cap is in the proximal position, resulting in compression of the second hub member against the first hub member, and
the second compressive force is greater than the first compressive force.

15. The medical device of claim 14 , wherein a level of compression of the second hub member against the first hub member is greater when the cap is in the proximal position than when the cap is in the distal position.

16. The medical device of claim 14 , wherein the cap is movable relative to the second hub member by rotating the cap about the second hub member.

17. The medical device of claim 14 , wherein the cap is movable to a plurality of intermediate positions between the distal position and the proximal position, wherein in each of the intermediate positions the cap exerts a different amount of compressive force on the second hub member, and wherein in each of the intermediate positions of the cap a different level of compression of the second hub member against the first hub member is achieved.

18. The medical device of claim 14 , wherein the cap includes an internal helical screw thread, and the second hub member includes an external helical screw thread for engaging with the internal helical screw thread of the cap.

19. The medical device of claim 18 , wherein only one of the internal or external helical screw threads tapers by moving away from a central longitudinal axis of the shaft as the one of the internal or external screw threads extends along a central longitudinal axis.

20. The medical device of claim 19 , wherein the one of the internal or external screw threads moves away from the central longitudinal axis as the one of the internal or external screw threads extends in a proximal direction.

Assignees

• Boston Scient Scimed Inc

Inventors

• Nguyen Man M
• Kappel Gary S
• Heller Gerald R
• Stanton Lawrence E

Classifications

• A61B10/06

  Biopsy forceps {, e.g. with cup-shaped jaws} · CPC title

• A61B17/29 Primary

  Forceps for use in minimally invasive surgery · CPC title

• A61B17/32056

  Surgical snare instruments (for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26) · CPC title

• A61B2017/0046

  with a releasable handle; with handle and operating part separable · CPC title

• A61B2017/2929

  with a head rotatable about the longitudinal axis of the shaft · CPC title