Embolizing system

• US 5,891,155 A
• Filed: 09/18/1997
• Issued: 04/06/1999
• Est. Priority Date: 01/27/1995
• Status: Expired due to Term

• Current Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Irie, Toshiyuki
• Primary Examiner(s): Dawson, Glenn K.
• Application Number:
  US08/933,267
• Time in Patent Office: 565 Days
• Field of Search: 604/57-64, 606/1, 606/108, 606/190-200, 606/213
• US Class Current: 606/108
• 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 17/12181 formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices
• CPC Class Codes: A61B 17/12186 liquid materials adapted to be injected
• CPC Class Codes: A61B 2017/1205 Introduction devices

Abstract

An embolizing system includes a catheter, having a lumen, an elongate member, insertable within the lumen of the catheter, and an occlusion particle. The occlusion particle has a receiving passageway therein for receiving the elongate member so the elongate member guides movement of the occlusion particle.

Claims

1. An embolization system for entering a vessel at an entry point and occluding a lumen of the vessel at an occlusion site, comprising:

a catheter having a lumen, the catheter being formed of a material suitable to follow the lumen of the vessel from the entry point to the occlusion site;

a first elongate member, insertable within the lumen of the catheter;

an occlusion particle having a receiving passageway therein for receiving the first elongate member so the first elongate member guides movement of the occlusion particle; and

a pusher, slidable relative to the first elongate member within the lumen of the catheter to engage the occlusion particle and to move the occlusion particle relative to the elongate member.

2. The embolization system of claim 1 wherein the pusher comprises:

a second elongate member having a receiving passageway so the pusher is slidable along the first elongate member, the first elongate member moving relative to the pusher within the receiving passageway the second elongate member.

3. The embolization system of claim 2 wherein the first elongate member comprises a wire and wherein the pusher comprises:

a tube having a lumen, the lumen sized large enough to slidably receive the wire and sized smaller than an outer dimension of the occlusion particle.

4. The embolization system of claim 3 wherein the pusher has a distal end portion for engaging the occlusion particle and pushing the occlusion particle along the wire so that the occlusion particle slides relative to the wire, the wire passing through the receiving passageway in the occlusion particle.

5. The embolization system of claim 4 wherein the receiving passageway of the occlusion particle comprises a bore defined by the occlusion particle, the bore being large enough to slidably receive the wire.

6. The embolization system of claim 1 wherein the occlusion particle is formed of radiopaque material.

7. The embolization system of claim 6 wherein the radiopaque material comprises platinum.

8. A method of occluding a site in a vessel, comprising:

accessing the site in the vessel with a catheter having a lumen;

advancing an elongate member through the lumen;

pushing a plurality of embolizing particles over the elongate member, through the lumen, to the site; and

releasing the particles from the elongate member proximate the site in the vessel.

9. The method of claim 8 wherein said releasing step comprises:

selectively releasing a desired amount of particles.

10. The method of claim 8 wherein said pushing step comprises:

advancing a tube over the elongate member, the tube having a distal end portion which engages the particles and pushes the particles along the elongate member.

11. An embolization system for occluding a lumen of a vessel, comprising:

a catheter having a lumen;

a plurality of occlusion particles; and

a guide member, insertable within the lumen of the catheter, the guide member cooperating with the occlusion particles to generally align the occlusion particles parallel to a longitudinal axis of the catheter, within the lumen of the catheter.

12. The embolization system of claim 11 wherein the guide member comprises:

an elongate member, and wherein the occlusion particles each have a receiving passageway therein for receiving the elongate member.

13. The embolization system of claim 12 wherein the elongate member comprises a wire, and further comprising:

a pusher, slidable relative to the wire within the lumen of the catheter to engage the occlusion particles and to move the occlusion particles relative to the wire.

14. The embolization system of claim 13 wherein the receiving passageway in each occlusion particle comprises a bore large enough to receive the wire.

15. An embolization system for entering a vessel at an entry point and occluding a lumen of the vessel at an occlusion site, comprising:

a catheter having a lumen, the catheter being formed of a material suitable to follow the lumen of the vessel from the entry point to the occlusion site;

a first elongate member, insertable within the lumen of the catheter;

an occlusion particle having a length not greater than approximately 1.2 mm and a receiving passageway extending along its length for receiving the first elongate member so the first elongate member guides movement of the occlusion particle; and

a pusher, slidable relative to the first elongate member within the lumen of the catheter to engage the occlusion particle and to move the occlusion particle relative to the elongate member.

16. An embolization system for occluding a lumen of a vessel, comprising:

a catheter having a lumen, the catheter being formed from a material suitable to follow the lumen of a vessel;

a plurality of occlusion particles each occlusion particle having a length not greater than approximately 1.2 mm; and

a guide member, insertable within the lumen of the catheter, the guide member cooperating with the occlusion particles to generally align the occlusion particles parallel to a longitudinal axis of the catheter, within the lumen of the catheter.

17. An embolization system for entering a vessel at an entry point and occluding a lumen of the vessel at an occlusion site, comprising:

a catheter having a lumen, the catheter being formed of a material suitable to follow the lumen of the vessel from the entry point to the occlusion site;

a first elongate member, insertable within the lumen of the catheter;

an occlusion particle having a length not greater than approximately 1.2 mm and a receiving passageway extending along its length for receiving the first elongate member so the first elongate member guides movement of the occlusion particle; and

a pusher, slidable relative to the first elongate member within the lumen of the catheter to engage the occlusion particle and to move the occlusion particle relative to the elongate member.

18. An embolization system for entering a vessel at an entry point and occluding a lumen of the vessel at an occlusion site, comprising:

a catheter having a lumen, the catheter being formed of a material suitable to follow the lumen of the vessel from the entry point to the occlusion site;

a first elongate member, insertable within the lumen of the catheter;

an uncoiled occlusion particle having a receiving passageway therein for receiving the first elongate member so the first elongate member guides movement of the uncoiled occlusion particle; and

a pusher, slidable relative to the first elongate member within the lumen of the catheter to engage the uncoiled occlusion particle and to move the uncoiled occlusion particle relative to the elongate member.