Endovascular implant

Patent metadata

Field	Value
Publication number	US-2017296366-A1
Application number	US-201715640095-A
Country	US
Kind code	A1
Filing date	Jun 30, 2017
Priority date	Jun 11, 2009
Publication date	Oct 19, 2017
Grant date	—

Abstract

A plaque tack can be used for holding plaque against blood vessel walls such as in treating atherosclerotic occlusive disease. The plaque tack can be formed as a thin, annular band for holding loose plaque under a spring or other expansion force against a blood vessel wall. Focal elevating elements and/or other features, such as anchors, can be used to exert a holding force on a plaque position while minimizing the amount of material surface area in contact with the plaque or blood vessel wall and reducing the potential of friction with the endoluminal surface. This approach offers clinicians the ability to perform a minimally invasive post-angioplasty treatment and produce a stent-like result without using a stent.

First claim

1 .- 49 . (canceled)

50 . A catheter delivery system, comprising:
a catheter shaft and a catheter sheath; a plurality of independent self-expanding tubular bodies located on the catheter shaft and spaced apart by a plurality of catheter shaft protrusions, each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies comprising:
a plurality of struts; and
a radiopaque marker that comprises a flat shape with a planar outer face tangential to a cylinder extending through an outer surface of the independent self-expanding tubular body;
a proximal handle with an actuator coupled to a proximal end of the catheter sheath, wherein movement of the actuator is configured to retract the catheter sheath and uncover the plurality of independent self-expanding tubular bodies.

51 . The catheter delivery system of claim 50 , wherein at least a portion of, each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies has a sloped orientation relative to a longitudinal axis of the independent self-expanding tubular body.

52 . The catheter delivery system of claim 50 , wherein the radiopaque marker comprises an eyelet.

53 . The catheter delivery system of claim 50 , each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies has an axial length and an expanded diameter, wherein the expanded diameter is a final diameter in an unconstrained expansion.

54 . The catheter delivery system of claim 50 , wherein the catheter shaft further comprises a plurality of recesses for retaining the plurality of independent self-expanding tubular bodies.

55 . The catheter delivery system of claim 53 , wherein each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies has an axial length to expanded diameter ratio that is no more than about 2.

56 . A catheter delivery system, comprising:
a catheter shaft and a catheter sheath; a plurality of independent self-expanding tubular bodies located on the catheter shaft and spaced apart by a plurality of catheter shaft protrusions, each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies comprising:
a plurality of struts; and
a radiopaque marker;
wherein each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies has a ratio of an axial length to an expanded diameter that is no more than about 2 and at least a portion of each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies has a sloped orientation relative to a longitudinal axis of the tubular body;
a proximal handle with an actuator coupled to a proximal end of the catheter sheath, wherein movement of the actuator is configured to retract the catheter sheath and uncover the plurality of independent self-expanding tubular bodies.

57 . The catheter delivery system of claim 56 , wherein the radiopaque marker comprises a flat shape with a planar outer face tangential to a cylinder extending through an outer surface of the independent self-expanding tubular body.

58 . The catheter delivery system of claim 56 , wherein the radiopaque marker comprises an eyelet.

59 . The catheter delivery system of claim 56 , wherein the expanded diameter is a final diameter in an unconstrained expansion.

60 . The catheter delivery system of claim 56 , wherein the catheter shaft further comprises a plurality of recesses for retaining the plurality of independent self-expanding tubular bodies.

61 . A method of treating a superficial or popliteal artery of a patient, comprising:
inserting a catheter system into at least one of a superficial artery of a patient and a popliteal artery of a patient, wherein the catheter system comprises a plurality of independent self-expanding tubular bodies, each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies comprising a radiopaque marker and a ratio of an axial length to an expanded diameter that is no more than about 2, and wherein the plurality of independent self-expanding tubular bodies are located on a catheter shaft of the catheter system and are spaced apart on the catheter shaft by a plurality of catheter shaft protrusions; deploying multiple independent self-expanding tubular bodies of the plurality of independent self-expanding tubular bodies from the catheter in the at least one of the superficial artery of the patient and the popliteal artery of the patient at locations separated by regions free of metallic support such that the at least one of the superficial artery of the patient and the popliteal artery of the patient is able to bend more naturally.

62 . The method of treating a superficial or popliteal artery of a patient of claim 61 , wherein the radiopaque marker comprises a flat shape with a planar outer face tangential to a cylinder extending through an outer surface of the independent self-expanding tubular body.

63 . The method of treating a superficial or popliteal artery of a patient of claim 62 , wherein the radiopaque marker further comprises an eyelet.

64 . The method of treating a superficial or popliteal artery of a patient of claim 61 , wherein the catheter system comprises a handle with an actuator, an inner shaft, and an outer sheath.

65 . The method of treating a superficial or popliteal artery of a patient of claim 61 , wherein the locations separated by regions free of metallic support are separated by a minimum spacing distance.

66 . The method of treating a superficial or popliteal artery of a patient of claim 65 , wherein the minimum spacing distance greater than about is at least an axial length of one independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies.

67 . The method of treating a superficial or popliteal artery of a patient of claim 61 , wherein at least a portion of each independent self-expanding tubular body of the plurality of independent self-expanding tubular bodies is deployed outwardly and comprises a cylindrical surface formed by a plurality of struts.

68 . The method of treating a superficial or popliteal artery of a patient of claim 64 , further comprising using the actuator to move the outer sheath proximally and uncover at least two independent self-expanding tubular bodies of the plurality of independent self-expanding tubular bodies.

Assignees

• Intact Vascular Inc

Inventors

• Giasolli Robert
• Schneider Peter

Classifications

• A61F2/95

  Instruments specially adapted for placement or removal of stents or stent-grafts · CPC title

• A61F2230/005

  Rosette-shaped, e.g. star-shaped · CPC title

• A61F2/89

  the wire-like elements comprising two or more adjacent rings flexibly connected by separate members · CPC title

• A61F2/91

  made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes · CPC title

• A61L31/16

  Biologically active materials, e.g. therapeutic substances {(A61L31/047 takes precedence)} · CPC title