Motorized telescoping medical device delivery system

Patent metadata

Field	Value
Publication number	US-11633569-B2
Application number	US-201916396236-A
Country	US
Kind code	B2
Filing date	Apr 26, 2019
Priority date	Apr 26, 2018
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A system for delivering an implantable medical device includes a handle housing. An outer sheath is coupler secured to a proximal end of an outer sheath that is configured to cover at least a portion of the implantable medical device. An outer sheath drive assembly is operably coupled to the outer sheath coupler and is configured to translate the outer sheath relative to the handle housing. An actuation shaft coupler is secured to a proximal end of an activation shaft. An actuation shaft drive assembly is operably coupled to the actuation shaft coupler and is configured to cause the actuation shaft to translate relative to the handle housing and shift the implantable medical device from a first position and a second position in which the implantable medical device is radially expanded relative to the first position.

First claim

What is claimed is:

1. A system for delivering an implantable medical device, comprising:
a handle housing;
an outer sheath coupler secured to a proximal end of an outer sheath, the outer sheath configured to cover at least a portion of the implantable medical device;
an outer sheath drive assembly operably coupled to the outer sheath coupler, the outer sheath drive assembly configured to translate the outer sheath relative to the handle housing;
an actuation shaft coupler secured to a proximal end of an actuation shaft, the actuation shaft extending within the outer sheath; and
an actuation shaft drive assembly operably coupled to the actuation shaft coupler, the actuation shaft drive assembly configured to cause the actuation shaft to translate relative to the handle housing and shift the implantable medical device between a first position and a second position in which the implantable medical device is radially expanded relative to the first position;
an outer sheath drive assembly motor having a motor coupling; and
an outer sheath drive assembly threaded rod operably coupled to the motor coupling such that actuation of the outer sheath drive assembly motor causes the outer sheath drive assembly threaded rod to rotate,
wherein the outer sheath drive assembly comprises a thrust bearing configured to secure the outer sheath drive assembly threaded rod at an end away from the outer sheath drive assembly motor while permitting the outer sheath drive assembly threaded rod to rotate relative to the thrust bearing.

2. The system of claim 1 , wherein the outer sheath drive assembly comprises:
an outer sheath nut threadedly engaged with the outer sheath drive assembly threaded rod and held against rotation such that rotation of the outer sheath drive assembly threaded rod causes the outer sheath nut to translate relative to the outer sheath drive assembly threaded rod;
wherein the outer sheath nut is configured to engage the outer sheath coupler such that translation of the outer sheath nut relative to the outer sheath drive assembly threaded rod causes the outer sheath to translate relative to the handle housing.

3. The system of claim 2 , wherein the outer sheath nut is held against rotation by virtue of being engaged with the outer sheath coupler.

4. The system of claim 2 , wherein the outer sheath drive assembly motor comprises a direct drive motor.

5. The system of claim 2 , wherein the outer sheath drive assembly motor further comprises a gearbox.

6. The system of claim 1 , wherein the actuation shaft drive assembly comprises:
an actuation shaft drive assembly motor having a motor coupling;
an actuation shaft drive assembly threaded rod operably coupled to the motor coupling of the actuation shaft drive assembly motor such that actuation of the actuation shaft drive assembly motor causes the actuation shaft drive assembly threaded rod to rotate; and
an actuation shaft nut threadedly engaged with the actuation shaft drive assembly threaded rod and held against rotation such that rotation of the actuation shaft drive assembly threaded rod causes the outer sheath nut to translate relative to the actuation shaft drive assembly threaded rod;
wherein the actuation shaft nut is configured to engage the actuation shaft coupler such that translation of the actuation shaft nut relative to the actuation shaft drive assembly threaded rod causes the outer sheath to translate relative to the handle housing.

7. The system of claim 6 , wherein the actuation shaft drive assembly further comprises a thrust bearing configured to secure the actuation shaft drive assembly threaded rod at an end away from the actuation shaft drive assembly motor while permitting the actuation shaft drive assembly threaded rod to rotate relative to the thrust bearing of the actuation shaft drive assembly.

8. The system of claim 6 , wherein the actuation shaft drive nut is held against rotation by virtue of being engaged with the activation shaft coupler.

9. The system of claim 1 , wherein the actuation shaft coupler is disposed within the handle housing at a position that is proximal of the outer sheath coupler.

10. The system of claim 1 , further comprising a controller disposed within the handle housing and configured to control operation of the outer sheath drive assembly and/or the actuation shaft drive assembly.

11. The system of claim 10 , wherein the controller is further configured to receive feedback from the outer sheath drive assembly and/or the activation shaft drive assembly.

12. The system of claim 10 , further comprising a power supply disposed within the handle housing and operably coupled to the controller.

13. A system for delivering an implantable medical device, comprising:
a handle housing;
an outer sheath configured to cover at least a portion of the implantable medical device;
an outer sheath coupler secured to the outer sheath such that translation of the outer sheath coupler relative to the handle housing causes translation of the outer sheath relative to the handle housing;
an outer sheath nut threadedly disposed on a first threaded rod and operably coupled to the outer sheath coupler;
an outer sheath drive motor operably coupled to the outer sheath nut such that actuation of the outer sheath drive motor causes the outer sheath nut to translate relative to the first threaded rod and thus causes the outer sheath coupler to translate relative to the handle housing;
an actuation shaft extending within the outer sheath and operably coupled to translation members secured relative to the implantable medical device such that translation of the actuation shaft causes translation of the translation members which in turn causes the implantable medical device to shift from a delivery configuration to a deployment configuration;
an actuation shaft coupler secured to the actuation shaft such that translation of the actuation shaft coupler relative to the handle housing causes translation of the actuation shaft relative to the handle housing;
an actuation shaft nut threadedly disposed on a second threaded rod and operably coupled to the actuation shaft coupler;
an actuation shaft drive motor operably coupled to the actuation shaft nut such that actuation of the actuation shaft drive motor causes the actuation shaft nut to translate relative to the second threaded rod and thus causes the actuation shaft coupler to translate relative to the handle housing; and
a first thrust bearing configured to secure the first threaded rod at an end away from the outer sheath drive motor while permitting the first threaded rod to rotate relative to the first thrust bearing.

14. The system of claim 13 , further comprising a second thrust bearing configured to secure the second threaded rod at an end away from the activation shaft drive motor while permitting the second threaded rod to rotate relative to the second thrust bearing.

15. The system of claim 13 , wherein the outer sheath nut has an overall length of about 12 mm to about 150 mm.

16. The system of claim 13 , wherein the actuation shaft nut has an overall length of about 12 mm to about 150 mm.

17. The system of claim 13 , further comprising a controller disposed within the handle housing and configured to control operation of the outer sheath drive motor and/or the actuation shaft drive motor.

18. A system for delivering an implantable medical device, comprising:
a handle housing;
an actuation shaft operably coupled to translation members secured relative to the implantable medical device such that translation of the

Assignees

• Boston Scient Scimed Inc

Inventors

• Poppe Kevin Robert
• Foster Daniel J
• Scheff Christopher Jay
• Swehla Bradley S
• Keogh Peter James
• Burke Stephen J
• Kane Michael J

Classifications

• A61F2/2436 Primary

  Deployment by retracting a sheath · CPC title

• A61F2/2466

  Delivery devices therefor · CPC title

• A61M25/005

  with embedded materials for reinforcement, e.g. wires, coils, braids · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61F2/9517

  handle assemblies therefor · CPC title