Threaded coil

• US 10,639,151 B2
• Filed: 07/27/2017
• Issued: 05/05/2020
• Est. Priority Date: 07/29/2016
• Status: Active Grant

• Current Assignee: Cephea Valve Technologies, Inc. (Abbott Laboratories Incorporated)
• Original Assignee: Cephea Valve Technologies, Inc. (Abbott Laboratories Incorporated)
• Inventors: von Oepen, Randolf, McNiven, Sean A.
• Primary Examiner(s): Woo, Julian W
• Application Number:
  US15/662,001
• Publication Number:
  US 20180028305A1
• Time in Patent Office: 1,013 Days
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2466 Delivery devices therefor
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2230/0091 helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: F16B 37/00 Nuts or like thread-engaging members specially shaped for rotations by a tool F16B23/00

Abstract

An intravascular delivery system includes a threaded coil. The threaded coil includes one or more wires coiled to form a spiral coil with at least one thread extending along a length of the threaded coil. The threaded coil is elastically deformable for delivery of the threaded coil to a target location in the body and is rotatable to longitudinally position an intravascular device at the target location.

Claims

1. A threaded device, the device comprising:

a first elastically deformable wire and a second elastically deformable wire spiraled about a longitudinal axis, the first elastically deformable wire and the second elastically deformable wire defining a lumen therethrough that is adapted to receive a guidewire, the first elastically deformable wire and the second elastically deformable wire being spirally interlocked to form a continuous coil including at least one thread on a radially outer surface of the coil, the thread being formed from at least a portion of each of the first elastically deformable wire and the second elastically deformable wire.

2. The device of claim 1, wherein the first elastically deformable wire has a projection and a recessed portion, the projection defining the thread on the radially outer surface.

3. The device of claim 1, wherein the first elastically deformable wire is a major coil and the second elastically deformable wire is a minor coil.

4. The device of claim 3, wherein the major coil has a major coil length and the minor coil has a minor coil length, a pitch of the thread being a sum of the major coil length and the minor coil length.

5. The device of claim 3, wherein the major coil has a major coil outer diameter in a range of 0.030 inches to 0.105 inches.

6. The device of claim 1, wherein the lumen has a lumen diameter in a range of 0.025 inches to 0.100 inches.

7. The device of claim 1, wherein the at least one of the first elastically deformable wire and the second elastically deformable wire includes a shape memory material.

8. An intravascular device delivery system, the system comprising:

an elongated member having a proximal end, a distal end, and a longitudinal axis therebetween;

a threaded coil positioned near the distal end of the elongated member, the threaded coil comprising;

a first elastically deformable wire and a second elastically deformable wire spiraled about a longitudinal axis, the first elastically deformable wire and the second elastically deformable wire defining a lumen therethrough that is adapted to receive a guidewire, the first elastically deformable wire and the second elastically deformable wire being spirally interlocked to form a continuous coil including at least one thread on a radially outer surface of the continuous coil, the thread being formed from at least a portion of each of the first elastically deformable wire and the second elastically deformable wire; and

a drive cable positioned in the elongated member and extending from the proximal end to the threaded coil, the drive cable being rotationally fixed relative to the threaded coil and comprising a lumen that is adapted to receive the guidewire.

9. The system of claim 8, wherein the elongated member includes an outer sheath and the threaded coil is longitudinally fixed relative to the outer sheath.

10. The system of claim 8, further comprising a bearing connected to a distal end of the threaded coil.

11. The system of claim 8, further comprising a distal end cap having complimentary threads configured to engage with the at least one thread of the threaded coil.

12. A method of delivering an intravascular device, the method comprising:

inserting an elongated member containing a threaded coil and a distal end cap into a patient'"'"'s vasculature;

applying a rotational force to the threaded coil;

engaging a thread of the threaded coil with a complimentary thread of the distal end cap; and

rotating the threaded coil to apply a longitudinal force between the complimentary thread and the threaded coil to longitudinally reposition an intravascular device releasably mounted to a distal end of the threaded coil with respect to the distal end cap, a proximal end of the intravascular device being releasably mounted to the distal end of the threaded coil.

13. The method of claim 12, wherein inserting the elongated member includes elastically deforming the threaded coil.

14. The method of claim 12, wherein longitudinally repositioning the intravascular device comprises moving an outer sheath of the elongated member in the proximal direction relative to the threaded coil.

15. The method of claim 12, wherein longitudinally repositioning the intravascular device comprises moving the outer sheath relative to the distal end cap.

16. The method of claim 12, further comprising moving the threaded coil longitudinally.

17. The method of claim 12, wherein longitudinally repositioning the intravascular device comprises moving a bearing mounted to an outer sheath to expose the intravascular device.

18. The method of claim 12, wherein longitudinally repositioning the intravascular device comprises distally advancing the intravascular device from a distal end of an outer sheath.