Device intended to be attached to or interconnected with a catheter, catheter and method

• US 9,918,839 B2
• Filed: 09/14/2011
• Issued: 03/20/2018
• Est. Priority Date: 09/14/2010
• Status: Active Grant

• Current Assignee: Venus Medtech (Hangzhou), Inc.
• Original Assignee: Venus Medtech (Hangzhou), Inc.
• Inventors: Goetz, Wolfgang, Lim, Hou-Sen
• Primary Examiner(s): Orkin, Alexander
• Application Number:
  US13/823,648
• Publication Number:
  US 20130245752A1
• Time in Patent Office: 2,379 Days
• Field of Search: 623 111, 623 112, 623 211, 606108, 606191, 606192, 606194, 606195, 606198
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2250/006 modular

Abstract

A device is intended to be attached to or interconnected with a medical implant, and intended to be attached to or interconnected with a catheter. The catheter is intended for implanting the implant. A catheter is suited for receiving at least one such device and a method provides a delivery implement with an implant detachably disposed in the device.

Claims

1. A device releasably attachable or interconnectable with a foldable and unfoldable medical implant, the device being configured to be attached to or interconnected with a delivery device for implanting the implant, the device comprising:

an outer portion;

an inner portion housed within the outer portion for folding and unfolding the implant;

folding and unfolding means comprising strings, reins, or threads for folding and unfolding the implant, wherein at least one portion of the folding and unfolding means is connected at an attachment portion with the inner portion of the device and wherein the inner portion is rotatably and concentrically supported within the outer portion of the device along a length of the inner portion, such that the inner portion is rotatable around a longitudinal axis of the device and during a rotation of the inner portion, the inner portion is configured to move in a longitudinal direction relative to the outer portion, and the folding and unfolding means are configured to be wound spirally or helically along the longitudinal axis around the inner portion within the outer portion during rotational and longitudinal movement of the inner portion.

2. A device according to claim 1, further comprising the implant, wherein the implant is detachable from the device.

3. A device according to claim 1, wherein the inner portion is rotatably supported by a bearing.

4. A device according to claim 1, further comprising an advancing mechanism or a displacing mechanism that enables a longitudinal displacement within the device of the inner portion, and that advances or displaces the inner portion in a longitudinal direction of the device when actuated.

5. A device according to claim 1, further comprising attaching or interconnecting means that comprises a first section, a second section, a third section and a fourth section for being attached or interconnected to a delivery device.

6. A device according to claim 5, wherein the attaching or interconnecting means comprises at least a first section that is rotatably supported within or on the device.

7. A device according to claim 5, wherein the attaching or interconnecting means comprises at least a second section that is arranged on the device in a manner such that the second section is not rotatable with respect to the device.

8. A device according to claim 1, wherein the inner portion comprises a guiding structure for guiding strings of the folding and unfolding means upon rotation of the inner portion.

9. A device according to claim 8, wherein the guiding structure comprises grooves wound spirally or helically along the longitudinal axis around the inner portion such that the folding and unfolding means are received in the grooves during winding up around the inner portion.

10. A device according to claim 1, being a catheter tip or a front end component of a catheter.

11. The device of claim 1, further comprising an attached delivery device.

12. A delivery device according to claim 11, further comprising attaching or interconnecting means that comprises a first section, a second section, a third section and a fourth section for attaching the delivery device to or interconnecting with the device.

13. A delivery device according to claim 12, wherein the attaching or interconnecting means for attaching the delivery device to the device includes the third section for interconnecting with the first section of the attaching or interconnecting means of the device.

14. A delivery device according to claim 13, wherein the attaching or interconnecting means for attaching the delivery device to the device comprise the fourth section for interconnecting with the second section of the attaching or interconnecting means of the device.

15. A delivery device according to claim 13, wherein the third section of the attaching or interconnecting means of the delivery device is rotatably arranged within the delivery device.

16. A delivery device according to claim 11, the delivery device being a flexible catheter.

17. A device according to claim 1, being a catheter tip.

18. A device according to claim 1, wherein

the outer portion includes a closed proximal end and an open distal end, the closed proximal end being disposed farther away from a handle of the delivery device than the open distal end, and

the inner portion is housed within the outer portion with an axial end of the inner portion and an inner surface of the closed proximal end of the outer portion facing each other.

19. The device according to claim 1,

wherein one of the outer portion and the inner portion comprises engagements,

the other one of the outer portion and the inner portion comprises a worm or thread, and

the worm or thread and the engagements are engaged with each other to provide a mechanism for effecting a longitudinal displacement of the inner portion relative to the outer portion with the rotational movement.

20. A method of providing a delivery implement with a device according to claim 1 and an implant before implantation, the method comprising the step:

attaching or fixing the device comprising the implant onto the delivery implement.

21. A method according to claim 20, wherein the device is attached or fixed to the delivery device in the operation room.