Intravascular device deployment mechanism incorporating mechanical detachment

• US 7,255,707 B2
• Filed: 12/22/2004
• Issued: 08/14/2007
• Est. Priority Date: 12/21/1998
• Status: Expired due to Fees

• Current Assignee: Micrus Endovascular LLC (Johnson & Johnson)
• Original Assignee: Micrus Endovascular LLC (Johnson & Johnson)
• Inventors: Ramzipoor, Kamal, Holdych, Tom
• Primary Examiner(s): Nguyen; Anhtuan T.
• Assistant Examiner(s): TYSON, MELANIE RUANO
• Application Number:
  US11/020,810
• Publication Number:
  US 20050113863A1
• Time in Patent Office: 965 Days
• Field of Search: 606/108, 606/144, 606/151, 606191-194, 606/200, 606/213, 623/1.11, 623/1.23
• US Class Current: 606/200
• 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 17/1214 Coils or wires
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/1205 Introduction devices
• 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 2017/12077 Joint changing shape upon application of heat, e.g. bi-metal or reversible thermal memory
• CPC Class Codes: A61B 2018/00005 Cooling or heating of the probe or tissue immediately surrounding the probe
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires

Abstract

The apparatus for deployment of a therapeutic device such as a micro-coil detachably mounts the therapeutic device to a distal portion of a pusher member. In one embodiment, the therapeutic device is detachably mounted to the distal portion of the pusher member by a connector fiber for securing the therapeutic device to the pusher member. The connector fiber passes through a cutter member such as a cutting ring within the distal portion of the pusher member, for cutting the connector fiber to release the therapeutic device when a desired placement of the therapeutic device within the vasculature is achieved.

Claims

1. An apparatus for release and deployment of a therapeutic device having an annular connector ring within the vasculature of a patient, comprising:

an elongated, flexible pusher member;

a connector fiber connected to the elongated, flexible pusher member and forming a loop through the connector ring of the therapeutic device to detachably mount the therapeutic device to the pusher member for placement of the therapeutic device within the vasculature;

a cutter member disposed adjacent to the connector fiber, the cutter member having an elongated pull member connected to the cutter member to allow a user to move the cutter member for cutting the connector fiber to cause the connector fiber to break and release the therapeutic device.

2. The apparatus of claim 1, wherein said connector fiber is formed from a plastic material.

3. The apparatus of claim 1, wherein said connector fiber is formed from polyethylene.

4. The apparatus of claim 1, wherein said pusher member comprises an interior lumen and at least one entry port communicating with said interior lumen, and said cutter member is disposed in the interior lumen adjacent to said at least one entry port.