US2005015110A1PendingUtilityA1

Embolization device and a method of using the same

47
Priority: Jul 18, 2003Filed: Jul 18, 2003Published: Jan 20, 2005
Est. expiryJul 18, 2023(expired)· nominal 20-yr term from priority
Inventors:Thomas J. FogartyMichael J. DrewsD. Bruce ModesittNeil D. HolmgrenDavid Willis
A61F 2230/0019A61F 2230/0021A61L 31/044A61F 2230/001A61F 2220/0091A61F 2002/075A61F 2/88A61F 2/07A61B 17/12163A61B 17/12118A61B 17/12022
47
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Claims

Abstract

Space-occupying devices for treating voids within the body are disclosed. The devices can have multiple elements connected to a flexible leader. The devices can be coated by a binding agent. The devices can also be fillable. Methods of making and using the devices are also disclosed.

Claims

exact text as granted — not AI-modified
1 . A space-occupying device comprising: 
 a space-occupying element comprising a device volume, and wherein the device volume is maintained in a substantially cylindrical configuration by a binding agent, and wherein the flexibility of the device volume is increased when the binding agent is exposed to a softening agent.    
   
   
       2 . The device of  claim 1 , wherein the device volume comprises a flexible segment.  
   
   
       3 . The device of  claim 1 , wherein the device volume comprises a helical segment.  
   
   
       4 . The device of  claim 1 , wherein the device volume comprises a woven segment.  
   
   
       5 . The device of  claim 1 , wherein the binding agent comprises a gel.  
   
   
       6 . The device of  claim 5 , wherein the gel comprises a hydrogel.  
   
   
       7 . The device of  claim 5 , wherein the gel comprises a gelatin.  
   
   
       8 . The device of  claim 1 , wherein the bindging agent comprises agar.  
   
   
       9 . The device of  claim 1 , wherein the bindging agent comprises a sugar.  
   
   
       10 . The device of  claim 1 , wherein the binding agent comprises collagen.  
   
   
       11 . The device of  claim 10 , wherein the bindging agent comprises a collagen matrix  
   
   
       12 . The device of  claim 1 , wherein the binding agent comprises a radial constraining device.  
   
   
       13 . The device of  claim 1 , wherein the binding agent comprises a net.  
   
   
       14 . A device for filling an abnormal void within the body comprising: 
 a first space-occupying piece;    a second space-occupying piece, wherein the first space-occupying piece is flexibly attached to the second space-occupying piece; and    a binding agent attached to the first space-occupying piece and the second space-occupying piece, wherein the binding agent increases the colum strength of the attachment of the first space-occupying piece and the second space-occupying piece, and wherein the flexibility of the attachment of the first space-occupying piece and the second space-occupying piece is increased when the binding agent is exposed to a softening agent.    
   
   
       15 . The device of  claim 14 , wherein the first space-occupying piece comprises a first segment of a flexible leader,  
   
   
       16 . The device of  claim 15 , wherein the second space-occupying piece comprises a second segment of the flexible leader.  
   
   
       17 . The device of  claim 14 , further comprising a flexible leader, wherein the first space-occupying piece is connected to the leader at a first length along the leader, and wherein the second space-occupying piece is connected to the leader at a second length along the leader.  
   
   
       18 . The device of  claim 17 , wherein the leader comprises a first end integrated with the first space-occupying piece.  
   
   
       19 . The device of  claim 18 , wherein the leader comprises a second end integrated with the second space-occupying piece.  
   
   
       20 . The device of  claim 17 , wherein the leader comprises a first end attached to the first space-occupying piece to impede removal of the first space-occupying piece from the leader.  
   
   
       21 . The device of  claim 20 , wherein the leader comprises a knot to impede removal of the first space-occupying piece from the leader.  
   
   
       22 . The device of  claim 14 , wherein the first space-occupying piece comprises a first non-expandable space-occupying element  
   
   
       23 . The device of  claim 15 , wherein the second space-occupying piece comprises a second non-expandable space-occupying element.  
   
   
       24 . The device of  claim 14 , wherein the first space-occupying piece comprises collagen.  
   
   
       25 . The device of  claim 24 , wherein the second space-occupying piece comprises collagen.  
   
   
       26 . The device of  claim 14 , further comprising a coating on the device.  
   
   
       27 . The device of  claim 26 , wherein the coating comprises a therapeutic agent and/or a diagnostic agent.  
   
   
       28 . The device of  claim 26 , wherein the coating comprises a thrombogenic material.  
   
   
       29 . The device of  claim 26 , wherein the coating comprises a collagen matrix.  
   
   
       30 . The device of  claim 14 , wherein the first space-occupying piece is woven with the second space-occupying piece.  
   
   
       31 . The device of  claim 14 , wherein the first space-occupying piece comprises a first fiber.  
   
   
       32 . The device of  claim 31 , wherein the second space-occupying piece comprises a second fiber.  
   
   
       33 . The device of  claim 31 , wherein the first fiber comprises polyester.  
   
   
       34 . The device of  claim 14 , wherein the first space-occupying piece is discrete from the second space-occupying piece.  
   
   
       35 . The device of  claim 14 , wherein the first space-occupying piece is integrated with the second space-occupying piece.  
   
   
       36 . The device of  claim 14 , wherein the first space-occupying piece is helical.  
   
   
       37 . The device of  claim 14 , wherein the binding agent comprises a gel.  
   
   
       38 . The device of  claim 37 , wherein the gel comprises a hydrogel.  
   
   
       39 . A method for filling an abnormal void within the body, the method comprising: 
 placing in a void within the body a catheter having a distal exit, the distal exit placed at a treatment site;    passing a space-occupying device through the catheter and distal exit, the space-occupying device comprising a device volume and a binding agent, wherein the binding agent reduces the flexibility of the space-occupying device; and    deploying the device into the treatment site.    
   
   
       40 . The method of  claim 39 , wherein the flexibility of the space-occupying device increases when the binding agent is exposed to a softening agent.  
   
   
       41 . The method of  claim 39 , wherein deploying comprises exposing the device to a softening agent.

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