Integrated mechanical handle with quick slide mechanism

• US 20050027305A1
• Filed: 01/05/2004
• Published: 02/03/2005
• Est. Priority Date: 04/23/2002
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Shiu, Brian, Goodson, Burt, Gershman, Ari, Jensen, David F., Repp, Richard E., Weber, Paul L.
• Granted Patent: US 7,105,016 B2
• Time in Patent Office: Days
• US Class Current: 606/108
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 2025/09116 Design of handles or shafts or gripping surfaces thereof for manipulating guide wires
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00

Abstract

A method of deploying a prosthesis includes engaging a hub assembly of a handle to a threaded outer surface of a slide shaft of the handle; rotating the hub assembly to cause axial translation of the hub assembly and a sheath coupled to the hub assembly to initiate deployment of the prosthesis; disengaging the hub assembly from the threaded outer surface by pivoting a thread tooth of the hub assembly out of threaded engagement with the threaded outer surface; and sliding the hub assembly on the slide shaft to further retract the sheath and complete deployment of the prosthesis.

Claims

1. A delivery system comprising:

a sheath; and

a handle comprising;

a slide shaft comprising a threaded outer surface; and

a hub assembly coupled to said sheath, said hub assembly comprising an internal slider subassembly for selectively engaging and disengaging said hub assembly with said threaded outer surface.

2. The delivery system of claim 1 wherein said internal slider subassembly comprises a thread tooth comprising a protruding tooth, said thread tooth being pivoted to engage and disengage said hub assembly with said threaded outer surface.

3. The delivery system of claim 2 wherein said protruding tooth is threadedly engaged with said threaded outer surface when said hub assembly is engaged with said threaded outer surface.

4. The delivery system of claim 2 wherein said protruding tooth is spaced apart from said threaded outer surface when said hub assembly is disengaged from said threaded outer surface.

5. The delivery system of claim 2 wherein said internal slider subassembly comprises an inner slider comprising a thread tooth pivot support, said thread tooth being pivotally mounted on said thread tooth pivot support.

6. The delivery system of claim 5 wherein said thread tooth pivot support comprises a protruding pivot pin seated in a pivot aperture of said thread tooth.

7. The delivery system of claim 5 wherein said inner slider further comprises a distal thread tooth pivot aperture and a proximal thread tooth pivot aperture, said thread tooth pivot support being between and separating said distal thread tooth pivot aperture and said proximal thread tooth pivot aperture.

8. The delivery system of claim 7 wherein said thread tooth pivots on said thread tooth pivot support into and out of said distal thread tooth pivot aperture and said proximal thread tooth pivot aperture.

9. The delivery system of claim 1 wherein said slide shaft comprises a hollow tubular member.

10. The delivery system of claim 9 wherein said slide shaft comprises opposing slots, said hub assembly comprising a slide comprising:

an inner body;

an outer body; and

couplers extending through said slots and coupling said inner body to said outer body.

11. The delivery system of claim 10 wherein said sheath is coupled to said inner body.

12. The delivery system of claim 10 wherein said hub assembly further comprises an external housing comprising a circumferential channel, said outer body being slidably mounted within said circumferential channel.

13. The delivery system of claim 12 wherein said circumferential channel is defined by a distal annular stop, a proximal annular stop, and a cylindrical portion of said external housing.

14. The delivery system of claim 1 wherein said internal slider subassembly comprises a sleeve comprising a thumb slider, wherein movement of said thumb slider selectively engages and disengages said hub assembly with said threaded outer surface.

15. The delivery system of claim 14 wherein said internal slider subassembly further comprises a spring pressing on said sleeve.

16. The delivery system of claim 14 wherein said internal slider subassembly further comprises an inner slider, said sleeve being located around said inner slider.

17. The delivery system of claim 16 wherein said sleeve comprises a longitudinal lip protruding inwards from an inner surface of said sleeve, said longitudinal lip being engaged with a longitudinal slot in an outer surface of said inner slider.

23. The delivery system of claim 10 wherein said inner body includes at least one support ring.

24. The delivery system of claim 23 wherein said at least one support ring prevents collapse or deflection of said slide shaft.

25. The delivery system of claim 5 wherein said thread tooth pivot support is flat.

18. A delivery system comprising:

a sheath; and

a handle comprising;

a slide shaft comprising a threaded outer surface; and

a hub assembly coupled to said sheath, said hub assembly comprising;

an inner slider comprising a thread tooth pivot support;

a thread tooth pivotably mounted on said thread tooth pivot support; and

a sleeve comprising a thread tooth press member pressing on said thread tooth, wherein motion of said sleeve relative to said inner slider pivots said thread tooth on said thread tooth pivot support to engage and disengage said hub assembly with said threaded outer surface.

19. A method comprising:

engaging a hub assembly of a handle to a threaded outer surface of a slide shaft of said handle;

rotating said hub assembly to cause axial translation of said hub assembly and a sheath coupled to said hub assembly;

disengaging said hub assembly from said threaded outer surface by pivoting a thread tooth of said hub assembly out of threaded engagement with said threaded outer surface; and

sliding said hub assembly on said slide shaft to further retract said sheath.

20. The method of claim 19 wherein said disengaging comprises pulling a thumb slider of said hub assembly.

21. The method of claim 20 wherein said pulling comprises sliding a thread tooth press member across said thread tooth.

22. The method of claim 21 wherein said thread tooth press member pivots said thread tooth as said thread tooth press member is slid past a thread tooth pivot support pivotally coupled to said thread tooth.