Control module for delivery systems

• US 10,159,819 B2
• Filed: 04/14/2015
• Issued: 12/25/2018
• Est. Priority Date: 04/24/2014
• Status: Active Grant

• Current Assignee: Medtronic Vascular Galway Limited (Medtronic Plc)
• Original Assignee: Medtronic Vascular Galway Limited (Medtronic Plc)
• Inventors: Duffy, Niall, Gallagher, John, McCaffrey, Gerry
• Primary Examiner(s): Dang, Son
• Application Number:
  US14/686,159
• Publication Number:
  US 20150306358A1
• Time in Patent Office: 1,351 Days
• Field of Search: 623 111, 60416413, 60416501, 600434
• 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 2025/09125 Device for locking a guide wire in a fixed position with respect to the catheter or the human body
• CPC Class Codes: A61M 25/09041 Mechanisms for insertion of guide wires

Abstract

A guidewire is coupled to a control module and extends through a lumen of the control module. The control module operates to transition between a first control state wherein the control module allows movement of the guidewire relative to a catheter and a second control state wherein relative axial movement between the catheter and guidewire is prevented.

Claims

1. A delivery system, comprising:

a handle maintaining a control module;

a catheter coupled to the handle and including a lumen;

a guidewire coupled to the control module and extending through the lumen, the control module operating to transition between a first control state wherein the control module permits axial movement of the guidewire relative to the catheter and a second control state wherein relative axial movement between the handle and guidewire is prevented; and

a sensor coupled to the catheter and generating a signal indicative of movement of the catheter relative to the guidewire;

wherein the control module is electronically connected to the sensor and is configured to transition to the second control state in response to the signal indicative of movement of the catheter relative to the guidewire.

2. The delivery system of claim 1, wherein the control module further includes a motor coupled to the guidewire, the motor operating to axially drive the guidewire when the control module is in the first control state and prevent axial movement of the guidewire relative to the handle in the second control state.

3. The delivery system of claim 1, further comprising an actuator assembled to the handle and coupled with the control module, the actuator transitioning the control module between the first control state and the second control state in response to a user operating the actuator.

4. The delivery system of claim 1, wherein the delivery system includes a capsule defining a proximal portion and a distal portion, the handle including at least one actuator to move the proximal portion relative to the distal portion, and wherein the control module is in the second control state upon operation of the actuator.

5. The delivery system of claim 1, wherein the control module includes a lumen maintaining the guidewire.

6. The delivery system of claim 1, further comprising a locking mechanism including opposing jaws and operable to transition the control module to the second control state.

7. The delivery system of claim 1, wherein the catheter includes an outer shaft and an inner shaft coaxially received within the outer shaft and defining the lumen, and further wherein the sensor includes a first sensor coupled to the inner shaft and a second sensor coupled to the outer shaft, and even further wherein the first sensor generates a first signal indicative of movement of the inner shaft relative to the guidewire and the second sensor generates a second signal indicative of movement of the outer shaft relative to the guidewire, and even further wherein the control module is electronically connected to the first and second sensors and is configured to transition to the second control state in response to the first signal and in response to the second signal.

8. A stent frame delivery system, comprising:

a handle including at least one actuator;

a catheter including a lumen and a delivery sheath capsule compressively retaining a stent frame;

a guidewire positioned within the handle and the lumen of the catheter;

a control module coupled with the handle and controlling the guidewire to permit movement of the guidewire relative to the handle during a first control state and lock the guidewire relative to the handle during a second control state; and

a sensor coupled to the catheter and generating a signal indicative of movement of the catheter relative to the guidewire;

wherein the control module is electronically connected to the sensor and is configured to transition to the second control state in response to the signal indicative of movement of the catheter relative to the guidewire.

9. The delivery system of claim 8, wherein the control module further includes a motor coupled to the guidewire, the motor operating to axially drive the guidewire when the control module is in the first control state and prevent axial movement of the guidewire relative to the handle in the second control state.

10. The delivery system of claim 8, further comprising an actuator assembled to the handle and coupled with the control module, the actuator transitioning the control module between the first control state and the second control state in response to a user operating the actuator.

11. The delivery system of claim 8, wherein the delivery system includes a capsule defining a proximal portion and a distal portion, the handle including at least one actuator to move the proximal portion relative to the distal portion, and wherein the control module is in the second control state upon operation of the actuator.

12. The delivery system of claim 8, wherein the control module includes a lumen maintaining the guidewire.

13. The delivery system of claim 8, further comprising a locking mechanism including opposing jaws and operable to transition the control module to the second control state.

14. The delivery system of claim 8, wherein the catheter includes an outer shaft and an inner shaft coaxially received within the outer shaft and defining the lumen, and further wherein the sensor includes a first sensor coupled to the inner shaft and a second sensor coupled to the outer shaft, and even further wherein the first sensor generates a first signal indicative of movement of the inner shaft relative to the guidewire and the second sensor generates a second signal indicative of movement of the outer shaft relative to the guidewire, and even further wherein the control module is electronically connected to the first and second sensors and is configured to transition to the second control state in response to the first signal and in response to the second signal.

15. A delivery system, comprising:

a handle;

a catheter having a lumen, a first end and a second end, the catheter coupled to the handle at the first end;

a tip coupled to the catheter at the second end of the catheter;

a control module coupled with the tip; and

a guidewire coupled to the control module and extending through the lumen and the tip, the control module operating to transition between a first control state wherein the control module allows relative axial movement between the tip and guidewire and a second control state wherein the control module prevents relative axial movement between the tip and the guidewire, the second control state including the control module applying a force onto the guidewire at a location within the tip.

16. The delivery system of claim 15, wherein the control module further includes a stationary collet portion and a moving collet portion configured to engage the stationary collet portion, and further wherein transition from the first control state to the second control state comprises actuation of the moving collet portion relative to the stationary collet portion.

17. The delivery system of claim 15, wherein the control module includes an engagement member positioned within the tip and a contact surface positioned on the tip, and further wherein transition from the first state to the second state comprises compression of the tip in response to contact between an inner surface of the catheter causes the engagement member to contact the guidewire.

18. The delivery system of claim 15, wherein the control module includes an inflatable region positioned in the tip, and further wherein transition from the first state to the second state includes inflation of the inflatable region.

19. The delivery system of claim 15, wherein the control module includes a first inflatable region positioned on a first side of the guidewire and a second inflatable region positioned on a second side of the guidewire, and further wherein transition from the first control state to the second control state comprises inflation of at least one of the first inflatable region and the second inflatable region.

20. The delivery system of claim 15, wherein only one of the first inflatable region and the second inflatable region is inflated in the second control state.

21. The delivery system of claim 15, wherein transition from the first control state to the second control state includes steering the guidewire such that, upon applying an axial force to a proximal end of the guidewire in a first direction, movement of a distal end of the guidewire is provided in a second direction, offset from the first direction.

22. A stent frame delivery system, comprising:

a handle including at least one actuator;

a catheter including a lumen, a delivery sheath capsule compressively retaining a stent frame and a tip positioned distal the delivery sheath capsule;

a guidewire positioned within the handle and the lumen of the catheter; and

a control module coupled with the tip and controlling the guidewire to allow movement of the guidewire relative to the tip during a first control state and prevent movement of the guidewire relative to the tip during a second control state, the second control state including the control module applying a force onto the guidewire at a location within the tip.

23. The delivery system of claim 22, wherein the control module further includes a stationary collet portion and a moving collet portion configured to engage the stationary collet portion, and further wherein transition from the first control state to the second control state comprises actuation of the moving collet portion relative to the stationary collet portion.

24. The delivery system of claim 22, wherein the control module includes an engagement member positioned within the tip and a contact surface positioned on the tip, and further wherein transition from the first state to the second state comprises compression of the tip in response to contact between an inner surface of the catheter causes the engagement member to contact the guidewire.

25. The delivery system of claim 22, wherein the control module includes an inflatable region positioned in the tip, and further wherein transition from the first state to the second state includes inflation of the inflatable region.