Devices and methods for crimping and loading a collapsible device into a delivery system

• US 9,308,346 B2
• Filed: 02/01/2013
• Issued: 04/12/2016
• Est. Priority Date: 02/01/2013
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Soundararajan, Gopikrishnan, Webster, Christopher, Dang, Kenny, Rangwala, Hussain
• Primary Examiner(s): Wilson, Lee D
• Application Number:
  US13/757,359
• Publication Number:
  US 20140215791A1
• Time in Patent Office: 1,166 Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/24 Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/9524 Iris-type crimpers
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble

Abstract

A device for crimping an collapsible device and loading the collapsible device into a delivery system, includes a crimping tool configured to radially crimp at least a portion of the collapsible device, a loading tool configured to load at least a portion of the collapsible device into a delivery system, and a housing that houses at least one of the crimping tool and loading tool, wherein the device is configured to crimp and load the collapsible device without requiring manual repositioning of the collapsible device. Methods of crimping an collapsible device and loading the collapsible device into a delivery system are also disclosed.

Claims

1. A device for crimping and loading a collapsible device into a delivery system, the device comprising:

a crimping tool configured to radially crimp at least a portion of the collapsible device, the crimping tool including an actuator, a plurality of compression elements, and a central cavity formed by the compression elements, wherein the plurality of compression elements are configured such that axial movement of the actuator causes the compression elements to radially compress such that the central cavity radially compresses from an expanded configuration to a compressed configuration; and

a loading tool configured to load at least a portion of the collapsible device into a delivery system, the loading tool including a rod, wherein the loading tool is configured for axial movement relative to the actuator such that the rod may enter the central cavity with the central cavity in the compressed configuration to push the collapsible device out of the central cavity and into the delivery system;

wherein the device is configured to crimp and load the collapsible device without requiring manual repositioning of the collapsible device.

2. The device of claim 1,

wherein the actuator is configured to actuate the crimping tool to radially crimp at least a portion of the collapsible device when the actuator is moved axially a predetermined amount relative to the loading tool.

3. The device of claim 1,

wherein the actuator is configured to actuate the loading tool to load at least a portion of the collapsible device into the delivery system when the actuator is moved a predetermined amount relative to the loading tool.

4. The device of claim 3, wherein the actuator is configured to actuate the loading tool to load at least a portion of the collapsible device into the delivery system when the actuator is moved a predetermined amount in an axial direction relative to the loading tool.

5. The device of claim 1,

wherein the actuator is configured to actuate the crimping tool to radially crimp at least a portion of the collapsible device when the actuator is moved from a first predetermined position relative to the loading tool to a second predetermined position relative to the loading tool,

wherein the actuator is configured to actuate the loading tool to load at least a portion of the collapsible device into the delivery system when the actuator is moved from the second predetermined position relative to the loading tool to a third predetermined position relative to the loading tool.

6. The device of claim 1,

wherein the actuator is configured to actuate the crimping tool to radially crimp at least a portion of the collapsible device when the actuator is moved from a first predetermined position relative to the loading tool to a second predetermined position relative to the loading tool,

wherein the actuator is configured to actuate the loading tool to load at least a portion of the collapsible device into the delivery system when the actuator is moved from a third predetermined position relative to the loading tool to a fourth predetermined position relative to the loading tool.

7. The device of claim 1,

wherein the actuator is configured to actuate the crimping tool to radially crimp at least a portion of the collapsible device when the actuator is moved in a first axial direction from a first predetermined position relative to the loading tool to a second predetermined position relative to the loading tool,

wherein the actuator is configured to actuate the loading tool to load at least a portion of the collapsible device into the delivery system when the actuator is moved in a second and opposite axial direction from a third predetermined position relative to the loading tool to a fourth predetermined position relative to the loading tool.

8. The device of claim 7, wherein the second predetermined position is the same as the third predetermined position.

9. The device of claim 1, further comprising an expander, wherein the compression elements are coupled to the expander which biases the compression elements radially outwardly, wherein axial movement of the actuator overcomes the bias of the expanded to radially compress the compression elements.

10. The device of claim 9, wherein the expander includes a base configured to receive the post therethrough and plurality of fingers coupled to the compression elements.

11. The device of claim 10, further comprising a sleeve disposed within the actuator, wherein the sleeve includes slanted surface configured to engage with a corresponding angled surface of the actuator, wherein axial movement of the actuator relative to the sleeve causes the corresponding angled surface of the actuator to move the compression elements radially inwardly.

12. The device of claim 10,

wherein the actuator is configured to actuate the crimping tool to radially crimp at least a portion of the collapsible device when the actuator is moved from a first predetermined position relative to the loading tool to a second predetermined position relative to the loading tool, wherein the rod is prevented from moving relative to the base of the expander while the actuator moves from the first predetermined position to the second predetermined position,

wherein the actuator is configured to actuate the loading tool to load at least a portion of the collapsible device into the delivery system when the actuator is moved from the second predetermined position relative to the loading tool to a third predetermined position relative to the loading tool, wherein the rod moves axially through the base of the expander and into the central cavity while the actuator moves from the second predetermined position to the third predetermined position.

13. The device of claim 1, wherein the actuator includes a slanted surface configured to engage a corresponding slanted surface of the compression elements such that axial movement of the actuator relative to the loading tool causes the slanted surface to engage the corresponding slanted surface to push the compression elements radially inwardly.

14. The device of claim 13, further comprising a plate including a central opening therethrough, wherein the central opening is configured to slidingly receive the post of the loading tool.

15. The device of claim 14,

wherein the actuator is configured to actuate the crimping tool to radially crimp at least a portion of the collapsible device when the actuator is moved from a first predetermined position relative to the loading tool to a second predetermined position relative to the loading tool, wherein the rod is prevented from moving relative to the plate while the actuator moves from the first predetermined position to the second predetermined position,

wherein the actuator is configured to actuate the loading tool to load at least a portion of the collapsible device into the delivery system when the actuator is moved from the second predetermined position relative to the loading tool to a third predetermined position relative to the loading tool, wherein the rod moves axially through the central opening of the plate and into the central cavity while the actuator moves from the second predetermined position to the third predetermined position.

16. The device of claim 14, wherein the loading tool further includes a plurality of fins configured to extend through corresponding openings through the plate.

17. The device of claim 16, wherein the fins are configured to engage the compression elements to maintain the compression elements in radially compressed when the loading tool moves axially relative to the actuator to move push the collapsible device out of the central cavity and into the delivery system.