Anti-rotation locking feature

Patent metadata

Field	Value
Publication number	US-9622860-B2
Application number	US-201213982826-A
Country	US
Kind code	B2
Filing date	Jan 31, 2012
Priority date	Jan 31, 2011
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

An adjustment tool enables manipulation of a prosthetic anatomical device such as an annuloplasty ring. The tool includes a compression member which is operative for retarding rotation of the adjustment shaft to preclude inadvertent rotation thereof during use of the tool by the surgeon. A locking device is associated with the adjustment tool to enable the releasable attachment of the tool to the anatomical device during its adjustment by manipulation of the tool. The locking device is oriented into operative and inoperative positions by the engagement and disengagement of locking elements. A scale may be provided on the adjustment tool to assist a surgeon in determining the size or amount of adjustment to the size of the anatomical device during its adjustment.

First claim

The invention claimed is:

1. A locking device comprising:
a tube having a first locking element;
a shaft extending into the tube;
a knob having one end attached to the shaft; and
a sleeve having a bore moveably arranged over the knob, the sleeve having a second locking element, whereby movement of the sleeve to a first position engages the first and second locking elements disabling rotation of the sleeve relative to the tube and to a second position disengaging the first and second locking elements enabling rotation of the shaft by rotation of the sleeve, wherein when the sleeve is in the first position and second position the knob is received within the bore of the sleeve, wherein the first locking element comprises an opening, and the second locking element comprises a shaped structure adapted to be received within the opening.

2. The device of claim 1 , wherein the shaped structure comprises at least one tab releasably engageable within the opening when the sleeve is in the first position.

3. The device of claim 1 , wherein the sleeve is keyed to the knob whereby rotation of the sleeve causes rotation of the knob and shaft.

4. The device of claim 1 , wherein the first locking element comprises a plurality of radially spaced apart openings, and the shaped structure comprises a plurality of radially spaced apart flexible appendages each having a tab for releasable engagement within one of the plurality of openings thereby preventing rotation of the sleeve relative to the tube.

5. A locking device for an adjustable device comprising:
a first tube having a distal end and a proximal end including a bore, the first tube including a first locking element adjacent the proximal end thereof;
a second tube having a distal end and a proximal end arranged concentric within the first tube;
a shaft rotationally received within the second tube, the shaft having a distal end and a proximal end;
a knob including a longitudinal bore and having a distal end and a proximal end, the proximal end of the shaft extending into the bore and attached to the proximal end of the knob, the distal end of the knob rotationally coupled within the bore of the proximal end of the first tube; and
a sleeve having a bore slideably arranged longitudinally over the knob and keyed thereto within the bore, the sleeve having a second locking element engageable with the first locking element, the second locking element comprising at least one appendage having a portion releasably engageable with the first locking element within the first tube when the knob is received within the bore of the sleeve thereby preventing rotation of the sleeve relative to the first tube.

6. The device of claim 5 , wherein the portion releasably engageable with the first locking element comprises a tab.

7. The device of claim 5 , wherein the first locking element comprises an opening and the second locking element includes a structure shaped to be received within the opening.

8. The device of claim 5 , wherein the distal end of the shaft includes a threaded portion.

9. A rotational locking device for releasable engagement with an adjustable assembly, comprising:
an elongated first hypotube having a first longitudinal axis, the first hypotube having a distal end and a proximal end;
an elongated shaft extending within the first hypotube along the first longitudinal axis, the shaft having a distal end and a proximal end, the distal end of the shaft having a portion adapted for releasable engagement with an adjustable assembly;
an elongated second hypotube having a second longitudinal axis, the second hypotube arranged concentric about the first hypotube with the first longitudinal axis coincident with the second longitudinal axis, the second hypotube having a distal end and a proximal end, the proximal end of the second hypotube having a first locking element;
a hollow knob having a distal end received within the proximal end of the second hypotube and a proximal end, the shaft extending through the distal end of the knob to the proximal end of the knob, the proximal end of the knob attached to the proximal end of the shaft; and
a hollow sleeve slideably arranged over the knob between a first engaged position and a second disengaged position, the sleeve having a distal end and a proximal end, the distal end of the sleeve having a second locking element releasably engageable with the first locking element when in the first engaged position, whereby when the first and second locking elements are disengaged rotation of the sleeve relative to the second hypotube causes rotation of the shaft, and whereby when the first and second locking elements are engaged rotation of the sleeve relative to the second hypotube is prevented.

10. The device of claim 9 , wherein the sleeve is keyed to the knob, whereby rotation of the sleeve causes rotation of the knob.

11. The device of claim 9 , wherein the first locking element comprises at least one opening and the second locking element comprises a structure shaped to be received within the at least one opening.

12. The device of claim 9 , wherein the second locking element comprises at least one locking tab at the distal end of the sleeve and the first locking element comprises at least one opening in the proximal end of the second hypotube, wherein the at least one locking tab is received within the at least one opening when the sleeve is in the first engaged position.

13. A tool for manipulating an adjustable device comprising:
a barrel;
a first knob rotationally engaged about the barrel;
a hypotube extending through the barrel having a distal end and a proximal end, a portion of the hypotube between the distal end and the proximal end attached to the first knob, the hypotube having a first locking element;
a housing supporting the hypotube for rotation by the first knob;
a shaft rotationally arranged within the hypotube;
a second knob spaced apart from the first knob and having one end coupled to the proximal end of the hypotube and the other end attached to the shaft; and
a sleeve having a bore moveably arranged over the second knob, the sleeve having a second locking element, whereby movement of the sleeve to a first position engages the first and second locking elements preventing rotation of the sleeve relative to the hypotube and to a second position disengaging the first and second locking elements permitting rotation of the sleeve relative to the hypotube, wherein when the sleeve is in the first position and the second position the knob is received within the bore of the sleeve.

14. The tool of claim 13 , wherein the first locking element comprises at least one opening and the second locking element comprises at least one structure adapted to be received within the at least one opening.

15. The tool of claim 14 , wherein the second locking element includes a tab releasably engagable within the at least one opening thereby preventing rotation of the sleeve relative to the hypotube.

16. The tool of claim 14 , further including at least one locking tab at the distal end of the sleeve and at least one opening in the proximal end of the hypotube, wherein the at least one locking tab is received within the at least one opening when the sleeve is in the first engaged position whereby rotation of the sleeve causes rotation of the second knob.

17. The tool of claim 16 , wherein the locking tab comprises a flexible appendage.

18. The tool of claim 13 , further including a compression member arranged within the housing engaging a portion of the hypotube for retarding rotation

Assignees

• Bielefeld Eric E
• Furnish Gregory R
• Bethards Christopher
• St Jude Medical

Inventors

• Bielefeld Eric E
• Furnish Gregory R
• Bethards Christopher

Classifications

• B25B23/0064

  Means for adjusting screwing depth · CPC title

• A61F2250/001

  for adjusting a diameter · CPC title

• B25G3/18

  comprising catches or pawls · CPC title

• A61F2/2466 Primary

  Delivery devices therefor · CPC title

• A61F2/2427 Primary

  Devices for manipulating or deploying heart valves during implantation · CPC title