Endovascular medical device with plurality of wires

• US 7,025,758 B2
• Filed: 07/07/2003
• Issued: 04/11/2006
• Est. Priority Date: 01/28/2000
• Status: Expired due to Term

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated), William Cook Europe ApS (Cook Group Incorporated)
• Inventors: Klint, Henrik Sønderskov
• Primary Examiner(s): NICOLAS, FREDERICK C
• Application Number:
  US10/615,314
• Publication Number:
  US 20040010243A1
• Time in Patent Office: 1,009 Days
• Field of Search: 604523-527, 604/164.13, 604104-109, 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 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/12063 electrolytically detachable
• CPC Class Codes: A61B 2017/12095 Threaded connection
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61M 2025/09191 made of twisted wires
• CPC Class Codes: A61M 25/0009 Making of catheters or other medical or surgical tubes
• CPC Class Codes: A61M 25/0043 characterised by structural features
• CPC Class Codes: A61M 25/0045 multi-layered, e.g. coated coating materials A61L29/08
• 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 catheter system comprising:

a catheter having a distal end, a body portion having at least one lumen with an inside surface extending through the body portion in a longitudinal direction from a proximal end toward the distal end, and at least one central member for coaxial advancement through said lumen, which the body portion is made of a multiple filament helically wound row of wires, wherein said row of wires has a pitch angle in the range of 26°

to 76°

, and wherein said inside surface of said body portion is mainly undeformable by the central member.

2. A catheter system as in claim 1, wherein said row of wires has a pitch angle in the range of 35°

to 40°

.

3. A catheter system as in claim 1, wherein said row of wires has a pitch angle in the range of 40°

to 65°

.

4. A catheter system as in claim 1, wherein said row of wires has a pitch angle in the range of 70°

to 76°

.

5. A catheter system as in claim 1, wherein said body portion is made of between 2 and 12 filaments helically wound to form the row of wires.

6. A catheter system as in claim 1, wherein said body portion is made of between 4 and 8 filaments helically wound to form the row of wires.

7. A catheter system as in claim 1, wherein at least a portion of the body portion is provided with a coating of elastic material.

8. A catheter system as in claim 7, wherein the coating of elastic material is a low-friction coating.

9. 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 at least two helically wound filaments wound to form a row wires.

10. A delivery system as in claim 9, wherein said self-expandable prosthesis is radially compressed when arranged in the receptacle.

11. A delivery system as in claim 9, wherein said shaft portion of said delivery device comprises said at least 12 or less helically wound filaments wound to form the row of wires.