STENT WHICH IS REDUCEABLE AGAIN IN ITS DIAMETER FROM AN EXPANDED STATE IN A CONTROLLED MANNER

• US 20110040366A1
• Filed: 03/02/2009
• Published: 02/17/2011
• Est. Priority Date: 03/02/2008
• Status: Active Grant

• Current Assignee: Venus Medtech (Hangzhou), Inc.
• Original Assignee: Transcatheter Technologies Gmbh
• Inventors: Lim, Hou Sen, Goetz, Wolfgang
• Granted Patent: US 9,681,968 B2
• Time in Patent Office: Days
• US Class Current: 623/1.12
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2439 Expansion controlled by filaments
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• 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 2002/9528 for retrieval of stents
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0091 helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61M 25/06 Body-piercing guide needles or the like

Abstract

The present invention proposes a catheter (1) for detachably receiving an expandable and/or decollapsible or unfoldable, respectively, implant, in particular a stent (13), wherein the catheter (1) comprises at least one means (2a, 2b, 2c, 4a, 4b, 4c, 4′, 4″, 4′″, 5) for controlling the expansion and/or the unfolding or decollapsing, respectively, of the implant from a first diameter to a second diameter and/or its return back from the second diameter to the first diameter. Furthermore, an implant, in particular a stent (13), and a set are proposed.

Claims

1-18. -18. (canceled)

19. A catheter for detachably receiving an expandable and/or decollapsible or unfoldable, respectively, implant, in particular stent, wherein the catheter comprises at least one means for controlling the expansion and/or the unfolding or decollapsing, respectively, of the implant from a first diameter to a second diameter and/or its return back from the second diameter to the first diameter;

or is prepared for receiving such a means.

20. A catheter according to claim 19, wherein the means for controlling comprises at least one passage means for letting pass one or more reins.

21. A catheter according to claim 20, wherein the expansion and/or decollapsing or unfolding, respectively, of the implant is controllable by changing the tension or stress, respectively, of the rein.

22. A catheter according to claim 20, wherein the rein can be passed from an interior of the catheter to an exterior of the catheter by means of passage means.

23. A catheter according to claim 20, comprising at least one passage means, in particular a passage opening, for inserting the rein in an open or closed elongated void of the catheter.

24. A catheter according to claim 23, wherein the elongated void is located at the proximal and/or at the distal end of the catheter.

25. A catheter according to claim 19, comprising at least one inflatable means, in particular an inflatable balloon, for expanding the implant.

26. A catheter according to claim 19, comprising at least one rein.

27. A catheter according to claim 19, which is suited and/or prepared for a connection to a control device for controlling the means for controlling the expansion and/or the decollapsing or unfolding, respectively, of the implant from a first diameter to a second diameter and/or its return back from the second diameter to the first diameter, in particular for controlling the tension or stress, respectively, applied to the rein and/or the strain applied to the rein.

28. A catheter according to claim 19, comprising a plurality of channels or lumina for guiding through reins.

29. A catheter according to claim 19, comprising at least one lumen or a channel for guiding through a further means.

30. An implant, in particular a stent comprising at least one means which is provided and prepared with the means of a catheter according to claim 19 for controlling the expansion and/or the decollapsing or the unfolding, respectively, of the implant from a first diameter to a second diameter and/or its return back from the second diameter to the first diameter in order to control the change of the diameter.

31. An implant, in particular a stent, particularly according to claim 30, comprising at least one guiding means which is prepared and suited for guiding at least one rein by which at least one section of the implant is expandable and/or decollapsible or unfoldable, respectively, from the first diameter to the second diameter and/or is returnable back from the second diameter to the first diameter by changing the tension or stress, respectively, or strain applied to the rein.

32. An implant according to claim 30 which is designed or embodied as a valve supporting stent, in particular as a heart valve supporting stent.

33. An implant according to claim 30, comprising a memory shape material, in particular nitinol.

34. An implant according to claim 30, comprising or consisting of a section which is prepared and suited for being expandable and/or decollapsible or unfoldable, respectively, and/or returnable back to a reduced diameter by use of the rein in a controlled manner.

35. A set, comprising at least one catheter according to claim 19;

and at least one expandable and/or decollapsible or unfoldable, respectively, implant, in particular a stent, according to claim 30.

36. A set according to claim 35 in which the catheter is arranged in the center of a cross-section of the implant.