MODIFIED HEADPIECE FOR HYDRAULIC COIL DEPLOYMENT SYSTEM

• US 20070288049A1
• Filed: 06/12/2006
• Published: 12/13/2007
• Est. Priority Date: 06/12/2006
• Status: Active Grant

• Current Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Original Assignee: Codman & Shurtleff Incorporated (Johnson & Johnson)
• Inventors: Mitelberg, Vladimir, Jones, Donald K., Davis, Richard Champion
• Granted Patent: US 7,670,353 B2
• Time in Patent Office: Days
• US Class Current: 606/191
• 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 17/1219 expandable in contact with liquids
• CPC Class Codes: A61B 2017/00539 hydraulically
• 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

Abstract

A vascular occlusion device for use with a hydraulic deployment catheter is provided. The vascular occlusion device includes a headpiece that has a deformable interference element which changes from an initial configuration to a deformed configuration upon an increase of hydraulic pressure within the deployment catheter. When the interference element is in the initial configuration, the headpiece is secured to the deployment catheter, and when the interference element is in the deformed configuration, the headpiece can be removed from the deployment catheter for deployment of the occlusion device.

Claims

1. An occlusion device for use with a hydraulic deployment system, comprising:

an occlusion device having a proximal end portion, said proximal end portion sized for insertion into a lumen of a deployment catheter of a hydraulic deployment system;

a deformable interference element located on the proximal end portion of the occlusion device, said deformable interference element having an initial configuration and a deformed configuration;

wherein the deformable interference element secures the proximal end portion of the occlusion device to the deployment catheter when the deformable interference element is in the initial configuration; and

wherein the proximal end portion of the occlusion device is removable from the deployment catheter when the interference element is in the deformed configuration.

2. The occlusion device of claim 1 in which the proximal end portion of the occlusion device comprises an occlusion device headpiece.

3. The occlusion device of claim 1 in which the proximal end portion of the occlusion device is cylindrical and the interference element comprises a deformable radial flare extending radially from the proximal end portion of the occlusion element.

4. The occlusion device of claim 1 in which the interference element is comprised of a flexible polymer.

5. The occlusion device of claim 1 in which the interference element transitions from the initial configuration to the deformed configuration when hydraulic pressure is applied to the interference element.

6. The occlusion device of claim 5 in which said transition takes place when the hydraulic pressure is 100 psi or greater.

7. The occlusion device of claim 1 in which the occlusion device includes an embolic coil.

8. An occlusion device deployment system, comprising:

a deployment catheter having a proximal end portion, a distal end portion, a lumen therethrough, a distal edge, and an interference surface along the distal end portion and spaced proximally from the distal edge;

a hydraulic pressure located within the lumen of the deployment catheter;

an occlusion device having a proximal end portion, said proximal end portion of the occlusion device removably disposed within the lumen of the deployment catheter;

a deformable interference element located on the proximal end portion of the occlusion device, said deformable interference element transitioning from an initial configuration to a deformed configuration upon an increase in the hydraulic pressure within the lumen of the deployment catheter;

wherein the deformable interference element engages the interference surface on the deployment catheter to secure the proximal end portion of the occlusion device in the lumen of the deployment catheter when the deformable interference element is in the initial configuration; and

wherein the deformable interference element disengages the interference surface on the deployment catheter when the interference element is in the deformed configuration, allowing the proximal end portion of the occlusion device to be removed from the lumen of the deployment catheter.

9. The deployment system of claim 8 in which the proximal end portion of the occlusion device comprises an occlusion device headpiece.

10. The deployment system of claim 8 in which the proximal end portion of the occlusion device is cylindrical and the interference element comprises a deformable radial flare extending from the proximal end portion of the occlusion device.

11. The deployment system of claim 8 in which the interference element is comprised of a flexible polymer.

12. The deployment system of claim 8 in which said transition take place when the hydraulic pressure within the lumen of the deployment catheter is 100 psi or greater.

13. The deployment system of claim 8 in which the occlusion device includes an embolic coil.

14. The deployment system of claim 8 in which the distal end portion of the deployment catheter is comprised of a coupling sleeve and the interference surface is a portion of the coupling sleeve.

15. The deployment system of claim 14 in which the coupling sleeve is made from a material that does not change configuration upon an increase of hydraulic pressure within the lumen of the deployment catheter.

16. The deployment system of claim 15 in which the coupling sleeve is comprised of a metal hypotube secured to the distal end portion of the deployment catheter.

17. A method of employing a hydraulic deployment catheter to deliver an occlusion device to a location within the vasculature of a patient, the deployment catheter including a lumen having a hydraulic pressure, the occlusion device having a proximal end portion which is disposed within the lumen of the deployment catheter, an interference element located on the proximal end portion of the occlusion device, said interference element having an initial configuration in which the interference element engages an interference surface of the deployment catheter to securely attach the proximal end portion of the occlusion device within the lumen of the deployment catheter and a deformed configuration in which the interference element disengages the interference surface of the deployment catheter so that the proximal end portion of the occlusion device is removable from the lumen of the deployment catheter, comprising:

placing the proximal end portion of the occlusion device in the lumen of the deployment catheter with the interference element in the initial condition to secure the proximal end portion of the occlusion device within the lumen of the deployment catheter;

manipulating the deployment catheter to guide the occlusion device to a preselected location within the vasculature of a patient;

increasing the hydraulic pressure within the lumen of the deployment catheter to cause the interference element to change from the initial configuration to the deformed configuration; and

pushing the proximal end portion of the occlusion device out of the lumen of the deployment catheter under a force created by the hydraulic pressure, thereby deploying the occlusion device.