Thrombus removal apparatus
First Claim
1. Thrombus removal apparatus including a catheter having a distal end, a proximal end and an internal lumen;
- a solenoid coil of conductive material adapted to be positioned within an endoluminal passage and located at or proximate the distal end of the catheter;
electrical couplings being connected to the coil; and
a piercing element disposed in the internal lumen residing at least partially within the solenoid coil at the distal end of the catheter;
a distal portion of the piercing element being movable in the catheter by interaction of a proximal portion of the piercing element with an electromagnetic field induced by application of electrical energy to the solenoid coil; and
including a restriction device coupled to the piercing element and extending proximally from a proximal end of the piercing element to be coupled to the catheter or other part of the apparatus, the restriction device allowing limited distal movement of the piercing element in the catheter and being configured to retain at least a portion of the piercing element within the solenoid coil.
3 Assignments
0 Petitions
Accused Products
Abstract
A thrombus removal apparatus (10) includes a catheter (12) having at its distal end (14) a solenoid coil section (16) within which there is disposed a piercing element (20) made of electromagnetic material. Within the solenoid coil section (16) there is provided a solenoid coil (26) which can be powered to generate an electromagnetic field which causes the piercing element (20) to reciprocate into and out of the coil section (16), in practice to pierce into and fragment a thrombus disposed in a patient'"'"'s vessel. An aspiration unit may be provided for aspirating thrombus fragments into the assembly (10) for removal from the patient'"'"'s vasculature. The apparatus (10) is able to remove dense thrombus material from within a patient, which cannot be otherwise removed by means of thrombolytic agents.
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Citations
21 Claims
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1. Thrombus removal apparatus including a catheter having a distal end, a proximal end and an internal lumen;
- a solenoid coil of conductive material adapted to be positioned within an endoluminal passage and located at or proximate the distal end of the catheter;
electrical couplings being connected to the coil; and
a piercing element disposed in the internal lumen residing at least partially within the solenoid coil at the distal end of the catheter;
a distal portion of the piercing element being movable in the catheter by interaction of a proximal portion of the piercing element with an electromagnetic field induced by application of electrical energy to the solenoid coil; and
including a restriction device coupled to the piercing element and extending proximally from a proximal end of the piercing element to be coupled to the catheter or other part of the apparatus, the restriction device allowing limited distal movement of the piercing element in the catheter and being configured to retain at least a portion of the piercing element within the solenoid coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- a solenoid coil of conductive material adapted to be positioned within an endoluminal passage and located at or proximate the distal end of the catheter;
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20. Thrombus removal apparatus including a catheter having a distal end, a proximal end and an internal lumen;
- a solenoid coil of conductive material adapted to be positioned within an endoluminal passage and located at or proximate the distal end of the catheter;
electrical couplings being connected to the coil; and
a piercing element disposed in the internal lumen residing at least partially within the solenoid coil at the distal end of the catheter;
a distal portion of the piercing element being movable in the catheter by interaction of a proximal portion of the piercing element with an electromagnetic field induced by application of electrical energy to the solenoid coil;
wherein the proximal portion of the piercing element is fixedly connected to the distal portion of the piercing element; and
including a tether coupled to the piercing element, the tether being attached to the catheter or other part of the apparatus, the tether allowing limited distal movement of the piercing element in the catheter and being configured to retain at least a portion of the piercing element within the solenoid coil. - View Dependent Claims (21)
- a solenoid coil of conductive material adapted to be positioned within an endoluminal passage and located at or proximate the distal end of the catheter;
Specification