DELIVERY SYSTEM FOR MEDICAL DEVICE

• US 20090254168A1
• Filed: 06/18/2009
• Published: 10/08/2009
• Est. Priority Date: 12/27/2007
• Status: Abandoned Application

• Current Assignee: Cook Incorporated (Cook Group Incorporated), William Cook Europe ApS (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated), William Cook Europe ApS (Cook Group Incorporated)
• Inventors: Parker, Fred T., Irwin, Nathaniel A., Hansen, Palle
• Application Number:
  US12/487,191
• Publication Number:
  US 20090254168A1
• Time in Patent Office: Days
• US Class Current: 623/1.110
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube

Abstract

A system for delivery of a medical device to a target site within the body of a patient includes an introducer sheath, and a delivery assembly receivable within a passageway of the sheath. The delivery assembly comprises an inner tubular and an outer tubular member. At least a distal portion of the inner tubular member has a diameter such that the medical device is receivable thereover. The outer tubular member is generally coaxial with the inner tubular member, and has a length such that the outer tubular member distal end terminates proximal to the inner tubular member distal portion. The outer tubular member has a first outer diameter at the proximal end and extends for a length of the outer tubular member to a first diameter boundary point. The outer tubular member has a gradual inward taper in the distal direction from the boundary point to a second outer diameter, and has an abrupt outward taper in the distal direction from the second diameter to the first diameter.

Claims

1. -15. (canceled)

16. A delivery assembly for use in delivering a medical device to a target site within the body of a patient, comprising:

an inner tubular member having a proximal end and a distal end, at least a distal portion of said inner tubular member having a diameter such that said medical device is receivable thereover in a compressed condition;

an outer tubular member having a proximal end and a distal end, said outer tubular member generally coaxial with the inner tubular member and having a length such that said outer tubular member distal end terminates proximal to said inner tubular member distal portion, said outer tubular member having a first outer diameter at said proximal end and having a gradual inwardly tapered portion in a distal direction to a second outer diameter; and

a holder band having a proximal end and a distal end, at least a portion of said holder band disposed over said outer tubular member second diameter, said holder band sized and arranged to maintain a position of said medical device on said inner tubular member.

17. The delivery assembly of claim 16, wherein said first outer diameter extends for a major length of said outer tubular member to a first diameter boundary point, said outer tubular member having said gradual inward taper in the distal direction from said boundary point to said second outer diameter.

18. The delivery assembly of claim 17, wherein said holder band has an outward taper from said distal end to said proximal end, at least a portion of said outward taper corresponding to said outer tubular portion inward taper.

19. The delivery assembly of claim 16, wherein the distal end of said holder band comprises a shoulder for inhibiting proximal movement of said medical device.

20. The delivery assembly of claim 16, wherein said holder band has a greater flexibility than a flexibility of said outer and inner tubular members.