Intracorporeal occlusive device and method

• US 9,526,505 B2
• Filed: 11/20/2008
• Issued: 12/27/2016
• Est. Priority Date: 06/02/1999
• Status: Expired due to Term

• Current Assignee: Michael P. Marks
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Marks, Michael P., Ross, Michael
• Primary Examiner(s): RODJOM, KATHERINE MARIE
• Application Number:
  US12/275,126
• Publication Number:
  US 20090076540A1
• Time in Patent Office: 2,959 Days
• Field of Search: 606/200, 606/108, 606/191, 606/192, 606/198
• US Class Current: 1/1
• 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 17/12109 in a blood vessel
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12136 Balloons
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/12145 having a pre-set deployed three-dimensional shape methods of manufacturing A61B2017/00526
• CPC Class Codes: A61B 17/12163 having a string of elements connected to each other
• CPC Class Codes: A61B 17/12195 comprising a curable material
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/12063 electrolytically detachable
• CPC Class Codes: A61B 2017/12068 detachable by heat
• CPC Class Codes: A61B 2017/12072 the heat created by laser light
• 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 2017/22068 Centering
• CPC Class Codes: A61B 2017/22069 Immobilising; Stabilising
• CPC Class Codes: A61M 2025/1052 for temporarily occluding a vessel for isolating a sector

Abstract

An intracorporeal space filling device and a delivery system and method for using the device is disclosed. The space filling device is preferably configured for percutaneous delivery from a peripheral conduit of a patient. The space filling device has an elongated tubular or interconnected bead structure which may have a transmutable material disposed within it. The transmutable material can be altered from a non-rigid state to a rigid state by the application of various types of energy or by other suitable means. The space filling device can be positioned by a delivery system and detached from the delivery system after desired positioning is achieved.

Claims

1. A delivery system for an intracorporeal device comprising:

an elongated shaft having an inner lumen;

a degradable link associating the elongated shaft and an intracorporeal device without covering an external circumference of the intracorporeal device, a portion of the degradable link disposed within the inner lumen of the elongated shaft; and

at least one signal transmission element disposed within the inner lumen of the elongated shaft, the at least one signal transmission element operable to transmit a direct current to initiate degradation of the degradable link thereby completely disassociating the intracorporeal device from the elongated shaft.

2. The delivery system of claim 1, wherein the degradable link comprises a polymeric material.

3. The delivery system of claim 1, wherein the degradable link is degradable by a reaction initiated by heat.

4. The delivery system of claim 1, wherein the at least one signal transmission element is selected from the group consisting of:

single pole wire, multiple pole wire, coaxial cable, and fiber optic cable.

5. The delivery system of claim 1, wherein the at least one signal transmission element is in communication with a resistor element, the resistor element disposed proximate to or within the degradable link.

6. The delivery system of claim 5, wherein the at least one signal transmission element communicates an electrical signal to the resistive element.

7. A method for disassociating an intracorporeal device from a delivery system, said method comprising the steps of:

disposing a portion of a degradable link within an inner lumen of an elongated shaft;

associating the degradable link to an intracorporeal device without covering an external circumference of the intracorporeal device with the degradable link;

sending a direct current through at least one electrical conductor disposed within a lumen of the elongated shaft to a resistive heater in operable contact with said degradable link, so as to degrade the degradable link and completely disassociate the intracorporeal device from the elongated shaft.

8. The method of claim 7, wherein the step of sending electricity through at least one electrical conductor comprises sending electricity through a single pole or multiple pole wire.

9. A detachment mechanism for detaching an intracorporeal space-filling device from a delivery system comprising:

an elongated shaft having an inner lumen;

a degradable polymer link detachably connecting an intracorporeal device to the elongated shaft wherein at least a portion of the degradable polymer link is disposed within the inner lumen;

a plurality of wires disposed within said inner lumen of said elongated tubular shaft; and

a resistive element connected to said plurality of wires, said resistive element operable to degrade the polymer link thereby releasing the intracorporeal device from the elongated tubular shaft.

10. The detachment mechanism of claim 9, wherein a direct current electrical signal causes heat to be generated by said resistive element.

11. A method of occluding an intracorporeal void, said method comprising the steps of:

positioning the distal end of a microcatheter such that a distal port in the distal end is directed to the cavity of the intracorporeal void;

deploying a space-filling device into said void wherein said space-filling device is detachably coupled to a delivery system by a polymer link disposed within an inner lumen of said delivery system; and

detaching said space-filling device from said delivery system by energizing an electric mechanism having wires disposed within the inner lumen of said delivery system.

12. The method of claim 11, wherein the step of detaching said space-filling device comprises energizing said electric mechanism comprises sending electricity to a heating element.

13. The method of claim 12, wherein sending electricity to a heating element comprises sending electricity to a resistive heating element.