IMPLANT DELIVERY SYSTEM WITH INTERLOCKED RX PORT ORIENTATION

• US 20140088565A1
• Filed: 12/03/2013
• Published: 03/27/2014
• Est. Priority Date: 05/12/2005
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Vongphakdy, Khamla, Wang, Huisun, Hashw, Adel, Wang, Lixiao
• Granted Patent: US 10,315,011 B2
• Time in Patent Office: Days
• US Class Current: 604/528
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• 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 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61M 25/09 Guide wires
• CPC Class Codes: Y10T 29/49938 Radially expanding part in cavity, aperture, or hollow body

Abstract

A medical implant delivery system maintains an orientation between a guidewire lumen of an inner member of the system and a rapid-exchange port in an outer member. The medical device is disposed intermediate the inner and outer members and in friction or pressure-fit contact with the outer member. Once the guidewire lumen of the inner member and the rapid exchange port of the outer member are oriented, the friction or pressure-fit operates to maintain the orientation until deployment of the medical implant. Orientation is further maintained by a telescoping coupling of the guide wire lumen with the rapid exchange port.

Claims

1-22. -22. (canceled)

23. A system for performing a surgical procedure comprising:

an outer tubular member including a guidewire port extending radially therethrough;

an inner tubular member slidably disposed within the outer tubular member, the inner tubular member including a lumen extending therethrough configured and dimensioned to receive a guidewire;

a guidewire lumen extension extending proximally from the inner tubular member, the guidewire lumen extension being configured and dimensioned to receive the guidewire, and being in general alignment with the guidewire port extending radially through the outer tubular member; and

an expandable implant connected to the inner tubular member movable between a contracted configuration and an expanded configuration, the implant being in frictional contact with an inner surface of the outer tubular member to rotationally fix the implant and the inner tubular member relative to the outer tubular member and thereby maintain rotational alignment between the guidewire lumen extension and the guidewire port extending radially through the outer tubular member.

24. The system of claim 23, wherein the implant is disposed about the inner tubular member.

25. The system of claim 23, wherein the inner tubular member includes a first interlock structure, and the implant includes a second interlock structure engagable with the first interlock structure to secure the implant to the inner tubular member, and inhibit relative rotation between the inner tubular member and the implant.

26. The system of claim 25, wherein the frictional contact between the implant and the inner surface of the outer tubular member is such that rotational movement of the inner tubular member causes corresponding rotational movement of the outer tubular member.

27. The system of claim 23, wherein the outer tubular member includes an extension extending inwardly into a lumen of the outer tubular member from the guidewire port, the extension of the outer tubular member slidably engaging the guidewire lumen extension.

28. The system of claim 27, wherein the extension of the outer tubular member receives the guidewire lumen extension.

29. The system of claim 28, wherein a length of the guidewire lumen extension received by the extension of the outer tubular member defines a usable length of longitudinal movement between the inner tubular member and the outer tubular member.

30. The system of claim 23, wherein the inner tubular member defines an implant receiving portion having a reduced cross-sectional transverse dimension such that the implant does not extend radially beyond a circumference defined by the inner tubular member when in the contracted configuration.

31. The system of claim 23 further including a push wire connected to a proximal end of the inner tubular member to facilitate movement of the inner tubular member relative to the outer tubular member.

32. The system of claim 23, wherein the outer tubular member includes a plurality of ridges extending inwardly from the inner surface thereof, each ridge defining a contact surface engagable with the implant to enhance contact between the outer tubular member and the implant.

33. The system of claim 32, wherein the ridges are dimensioned to extend axially along the inner surface of the outer tubular member.

34. The system of claim 32, wherein the ridges are uniformly distributed with respect to the inner surface of the outer tubular member.

35. The system of claim 32, wherein the contact surface defined by each ridge is flat in configuration.

36. The system of claim 32, wherein the contact surface defined by each ridge is curved in configuration.

37. A method of assembling an expandable implant and a delivery system configured and dimensioned to deploy the expandable implant, the method comprising:

positioning the implant about an inner member of the delivery system with the implant in a contracted state, the inner member including a guidewire lumen extension extending proximally therefrom;

connecting the implant to the inner member;

sliding an outer member of the delivery system distally relative to the inner member to cover a proximal end of the implant, the outer member including an extension extending inwardly into a lumen of the outer member; and

expanding the implant within the outer member to cause frictional engagement between the implant and an inner surface of the outer member to inhibit relative rotation between the inner and outer members and thereby maintain rotational alignment between the guidewire lumen extension of the inner member and the extension of the outer member.

38. The method of claim 37 further including inserting a portion of the guidewire lumen extension into the extension of the outer member.

39. The method of claim 38 further including sliding the inner member in relation to the outer member through a range of motion defined by the portion of the guidewire lumen extension received by the extension of the outer member.

40. The method of claim 37, wherein expanding the implant includes establishing contact between the implant and a plurality of ridges extending inwardly from the inner surface of the outer member, each ridge defining a contact surface engagable with the implant to enhance contact between the outer member and the implant.

41. The method of claim 40, wherein expanding the implant includes engaging the implant with a flat surface defined by each of the ridges.

42. The method of claim 40, wherein expanding the implant includes engaging the implant with a round surface defined by each of the ridges.