Integrated mechanical handle with quick slide mechanism

• US 20030199966A1
• Filed: 04/23/2002
• Published: 10/23/2003
• 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
• Granted Patent: US 6,911,039 B2
• Time in Patent Office: Days
• US Class Current: 623/1.12
• 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 restraining the prosthesis within a proximal end of a sheath. A slide ring of a handle is rotated to initiate retraction of the sheath. In this manner, the prosthesis is initially very gradually released. The slide ring is then slid to complete retraction of the sheath and to deploy the prosthesis. In this manner, the sheath is easily and quickly retracted thus rapidly completing deployment of the prosthesis. Rapid deployment of the prosthesis facilitates faster procedure times, thus minimizing the period of time during which blood flow is occluded.

Claims

1. A delivery system comprising:

a handle; and

a sheath slidably and threadedly coupled to said handle.

2. The delivery system of claim 1 wherein said handle comprises:

a slide ring; and

a slide within said slide ring, said slide being threadedly attached to said slide ring.

3. The delivery system of claim 2 wherein axial rotation of said slide ring causes axial translation of said slide away from a proximal end and towards a distal end of said slide ring.

4. The delivery system of claim 3 wherein said sheath is coupled to said slide.

5. The delivery system of claim 1 wherein said handle comprises:

a proximal housing;

a distal housing;

a slide shaft extending between said proximal housing and said distal housing;

a slide ring; and

a slide located within said slide ring, said sheath being coupled to said slide, said slide ring and said slide being slidably mounted on said slide shaft.

6. A delivery system comprising:

a handle comprising;

a slide shaft comprising at least one slot;

a slide ring;

a slide threadedly attached to said slide ring comprising;

an inner body inside said slide shaft;

an outer body outside said slide shaft; and

a coupler coupling said inner body to said outer body through said at least one slot,

wherein said slide ring and said slide are slidably mounted to said slide shaft.

7. The delivery system of claim 6 further comprising a sheath coupled to said inner body.

8. The delivery system of claim 7 wherein said sheath comprises a pushrod lumen, said delivery system further comprising:

a pushrod extending through said sheath; and

a prosthesis over a proximal end of said pushrod and restrained within a proximal end of said sheath.

9. The delivery system of claim 8 wherein said prosthesis is deployed by sliding said slide ring down said slide shaft.

10. The delivery system of claim 8 wherein said prosthesis is deployed by rotating said slide ring.

11. The delivery system of claim 8 wherein said prosthesis is deployed by rotating and sliding said slide ring.

12. The delivery system of claim 6 wherein said slide ring comprises a threaded inner surface threaded to a threaded outer surface of said outer body.

13. The delivery system of claim 12 wherein rotation of said slide ring causes said slide to move along a helical path of said threaded inner surface of said slide ring.

14. A delivery system comprising:

a sheath comprising a pushrod lumen;

a pushrod extending through said sheath; and

a handle comprising a hub assembly coupled to said sheath, said hub assembly comprising a selectively engaging member for selectively engaging and disengaging said hub assembly from said pushrod.

15. The delivery system of claim 14 wherein said hub assembly is engaged with said pushrod, and wherein axial rotation of said hub assembly causes axial translation of said sheath.

16. The delivery system of claim 14 wherein said hub assembly is slidably mounted to said pushrod when said hub assembly is disengaged from said pushrod.

17. The delivery system of claim 14 wherein said hub assembly is threadedly mounted to said pushrod when said hub assembly is engaged with said pushrod.

18. The delivery system of claim 14 wherein said selectively engaging member comprises at least one spring arm.

19. The delivery system of claim 18 wherein a slide ring comprises at least one tab pressing on said at least one spring arm when said hub assembly is engaged with said pushrod.

20. The delivery system of claim 14 wherein a threaded surface of said selectively engaging member is threadedly attached to a threaded outer surface of said pushrod when said hub assembly is engaged with said pushrod.

21. A method of deploying a prosthesis comprising:

restraining said prosthesis within a proximal end of a sheath;

rotating a slide ring of a handle in a first direction to initiate retraction of said sheath; and

sliding said slide ring to further retract said sheath.

22. The method of claim 21 wherein said handle further comprises a slide threadedly attached to said slide ring, said rotating comprising moving said slide from a proximal end of said slide ring and towards a distal end of said slide ring.

23. The method of claim 22 wherein said sheath is coupled to said slide.

24. The method of claim 21 wherein said sliding comprises moving said slide ring from a proximal housing and towards a distal housing of said handle.

25. The method of claim 21 farther comprising disengaging a hub assembly comprising said slide ring from a pushrod.

26. The method of claim 25 wherein said disengaging comprises rotating said slide ring in a second direction opposite said first direction.

27. The method of claim 25 wherein said sliding comprises sliding said slide ring along said pushrod.