Endovascular medical device with plurality of wires

• US 8,721,625 B2
• Filed: 12/21/2005
• Issued: 05/13/2014
• Est. Priority Date: 01/26/2001
• Status: Expired due to Fees

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Klint, Henrik Snderskov
• Primary Examiner(s): Erezo, Darwin
• Assistant Examiner(s): MENDOZA, MICHAEL G
• Application Number:
  US11/314,541
• Publication Number:
  US 20060100602A1
• Time in Patent Office: 3,065 Days
• Field of Search: 606/213, 606/200, 604/524, 600/434, 600/585
• US Class Current: 604/524
• CPC Class Codes: A61B 17/12022 Occluding by internal devices, e.g. balloons or releasable wires plugging an opening in the wall of an organ A61B17/0057; occluders for the cervical canal A61F6/146; vas deferens occluders A61F6/20
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 2017/00292 mounted on or guided by flexible, e.g. catheter-like, means
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61B 2017/12063 electrolytically detachable
• CPC Class Codes: A61B 2017/12095 Threaded connection
• CPC Class Codes: A61M 25/0053 having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid
• CPC Class Codes: A61M 25/09 Guide wires

Abstract

An endovascular device (1, 100, 200, 300) having a distal end (2), a proximal end (4) and a body portion (3) therebetween. The body portion is made of a multiple filament helically wound row (A) of wires (5), provided with a sealing coating (14) on the inside surface or the outside surface or both. The device may be a catheter (1), a sheath, an introducer, a delivery device, a pusher (100), an embolization coil delivery device (300), or a receptacle (208) for an expandable prosthesis (220) used with a delivery device (200). From 2 to 12, and preferably from 4 to 8, wires (5) are used in the row, and fewer wires may be used proceeding toward the distal end (2) for greater flexibility. The helically wound row of wires transmits torque and provides pushability to the device while resisting kinking, and enables a small outside diameter for reaching very small vessels and extending through very tortuous vessels.

Claims

1. A delivery system comprising:

a delivery device with a distal end and a shaft portion with a lumen extending in a longitudinal direction from a proximal end and toward the distal end, a self-expandable prosthesis arranged in a receptacle at the distal end of the delivery device, and a pusher member arranged in the lumen of said delivery device to cause relative axial movement of the self-expandable prosthesis with respect to the delivery device,

said shaft portion of said delivery device comprising a first helically wound multiple filament row of from four to eight wires of circular cross-section closely adjacent to each other, wherein said row of wires has a pitch angle in the range of 40°

to 65°

, the wires being provided with a low-friction sealing coating of elastic material on at least a radially outwardly facing surface, the sealing coating having a thickness at the middle of each of the wires of less than 0.1 mm,

said receptacle comprising a second helically wound multiple filament row of from two to twelve wires of circular cross-section closely adjacent to each other, wherein said row of wires has a pitch angle in the range of 26°

to 76°

,

said pusher member comprising a third helically wound multiple filament row of from two to twelve wires of circular cross-section closely adjacent to each other, wherein said row of wires has a pitch angle in the range of 26°

to 76°

, and

one of a radially inwardly facing surface of said delivery device and a radially outwardly facing surface of said pusher member being provided with a low-friction sealing coating of elastic material.

2. The delivery system of claim 1, wherein the receptacle is a connection extension that includes at least one helically wound wire of a different cross-section than any one wire of the row of wires extending from the distal section to the proximal section.

3. The delivery system of claim 2, wherein the connection extension for detachably mounting of an embolization device includes a threading coil for threading engagement with the embolization device.

4. The delivery system of claim 2, wherein the connection extension for detachably mounting of an embolization device is configured to be electrolytically erodible.

5. The delivery system of claim 2, wherein the connection extension for detachably mounting of an embolization device is configured to be heat erodible.

6. The delivery system of claim 2, wherein the connection extension for detachably mounting of an embolization device includes a threading coil for threading engagement with the embolization device.

7. The delivery system of claim 2, wherein the distal section of the delivery member includes a radiopaque material.

8. The delivery system of claim 7, wherein the radiopaque material is spaced a predetermined distance from a distal end of the connection extension for detachably mounting of an embolization device.

9. The delivery system of claim 7, wherein the radiopaque material is at least a portion of the connection extension for detachably mounting of an embolization device.