VASO-OCCLUSIVE DEVICE DELIVERY SYSTEM
First Claim
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1. A vaso-occlusive device delivery assembly, comprising:
- a pusher assembly including a substantially fluid tight pressure chamber in a distal end portion thereof;
a thermally activated pressure generating material disposed in the pressure chamber;
a heat generating member at least partially disposed in the pressure chamber;
a vaso-occlusive device detachably coupled to the pusher assembly distal of the pressure chamber, wherein the pressure generating material, when heated by the heat generating member, increases a pressure in the pressure chamber, thereby detaching the vaso-occlusive device from the pusher assembly.
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Abstract
A vaso-occlusive device delivery assembly includes a pusher assembly and a vaso-occlusive device detachably coupled to the pusher assembly by an attachment member is frictionally secured within a lumen of the pusher assembly. A heat generating member is disposed in the pusher assembly lumen, along with a pressure generating material, such that, when heat is generated by the heat generative device, the pressure generating material increases a pressure in the pusher assembly lumen, thereby dislodging the attachment member from the pusher assembly and detaching the vaso-occlusive device from the pusher assembly.
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Citations
20 Claims
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1. A vaso-occlusive device delivery assembly, comprising:
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a pusher assembly including a substantially fluid tight pressure chamber in a distal end portion thereof; a thermally activated pressure generating material disposed in the pressure chamber; a heat generating member at least partially disposed in the pressure chamber; a vaso-occlusive device detachably coupled to the pusher assembly distal of the pressure chamber, wherein the pressure generating material, when heated by the heat generating member, increases a pressure in the pressure chamber, thereby detaching the vaso-occlusive device from the pusher assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A vaso-occlusive device delivery assembly, comprising:
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a pusher assembly comprising an elongate body having a lumen in communication with a distal end opening, a heat generating member disposed in the lumen, and a thermally activated pressure generating material disposed in the lumen; and a vaso-occlusive device including an attachment member at a proximal end thereof, the attachment member being frictionally secured to the pusher assembly, such that the vaso-occlusive device is detachably connected to the pusher assembly, wherein, when heat is generated by the heat generating member, the pressure generating material increases a pressure in the lumen, thereby dislodging the attachment member from the pusher assembly, and detaching the vaso-occlusive device from the pusher assembly. - View Dependent Claims (18)
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19. A vaso-occlusive device delivery assembly, comprising:
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a pusher assembly comprising a tubular connecting member, a heat generating member disposed in the tubular connecting member, and a thermally activated pressure generating material disposed in the tubular connecting member; and a vaso-occlusive device detachably connected to the pusher assembly via the tubular connecting member, wherein the pressure generating material, when heated by the heat generating member, increases a pressure in the tubular connecting member, thereby rupturing the tubular connecting member and detaching the vaso-occlusive device from the pusher assembly. - View Dependent Claims (20)
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Specification