The University of Texas System

Andr&aacute;s K&oacute;nya

Kenneth Carroll Wright

Sidney Wallace

A coil-type vasoocclusion device ( ) for establishing an embolus or vascular occlusion in a human or veterinary patient is adapted for introduction into the patient via a catheter ( ). The device ( ) first includes a coil ( ) having proximal and distal coil ends ( ) and a coil lumen ( ). The device ( ) also includes a core ( ) disposed in at least part of the coil lumen ( ), the core having proximal and distal core ends ( ). Only one core end ( or ) is directly affixed to a respective end ( or ) of the coil ( ); the other core end ( or ) is not directly connected to either end ( or ) of the coil ( ). The core ( ) is preferably nitinol in a superelastic state, being in other than its stress induced, martensitic condition. The device ( ) can include a thrombogenic material ( ) connected to or carried by the coil ( ). The coil ( ) is preferably adapted to achieve a suitable secondary shape ( ) when deployed from the catheter ( ). A medical device ( ) combining the catheter ( ), a pusher ( ), a coupling ( ) and the vasoocclusion device ( ) is also disclosed. The vasoocclusion device ( ) is easily repositioned in the vascular system, thereby ensuring proper deployment, and also enjoys a dislodging force about twice as great as comparable coil-type devices lacking the core ( ), substantially or completely preventing migration of the device ( ) after its deployment.

Vasoocclusion coil device having a core therein

A retrieval device or snare for grasping foreign articles and retrieving them from the body of a patient. The retrieval device includes a catheter open at both ends such that it may be advanced along a guidewire. The distal end of a wire is attached to the first catheter near an opening system within the catheter. The opening system may be a slot or a pair of holes. A portion of the wire is oriented external of the catheter. Manipulation of the proximal end of the wire causes a portion of the wire to form a loop external of the catheter. The catheter may be tapered, as may be the wire. A reinforcing- material may be attached to the portion of the wire that forms the loop. Another reinforcing material may also be attached to the proximal portion of the wire in order to stiffen the wire and improve its pushability. A guidewire may be inserted into a patient and maneuvered to an appropriate location within the patient, the catheter may be advanced over the guidewire, the wire attached to the catheter may be manipulated to capture a foreign body with the loop, and the catheter and foreign body may be withdrawn from the patient.

Foreign body retrieval device

An occlusion method and apparatus. The occluder includes a elastically deformable members and a jacket. The elastically deformable members are secured in spaced relation and extend in arcuate conformation therebetween. The jacket covers at least a portion of the elastically deformable members. The elastically deformable members are configured to become compressed upon application of a force and to recover the arcuate conformation upon removal of the force to occlude a site.

Growing community of inventors

Houston, TX, United States of America

András Kónya

Growing community of inventors

Houston, TX, United States of America

Andr&aacute;s K&oacute;nya

András Kónya