Mechanically detachable vaso-occlusive device
First Claim
1. An occlusive device, comprising:
- an elongate pusher member having a distal end and a proximal end and a lumen extending between the distal and proximal ends;
a locking member disposed in the lumen of the elongate pusher member;
an elongate releasing member having a distal end and a proximal end, the distal end including a filament attached thereto, the elongate releasing member being moveable within the lumen of the elongate pusher member; and
an occlusive element including a securing member positioned at a proximal end;
wherein the securing member is locked to the elongate releasing member when the filament is looped through the securing member and a distal end of the filament is looped back to be pinched between the locking member and the elongate releasing member such that the filament is secured to the securing member thereby preventing axial movement of said occlusive element, and unlocked when the elongate releasing member is retracted proximally relative to the elongate pusher member such that the filament passes out of the securing member thereby releasing said occlusive element,wherein the locking member is sized to prevent the elongate releasing member from deploying out the distal end of the elongate pusher member.
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Accused Products
Abstract
A device for delivering an occlusive element includes an elongate pusher member having a lumen. A locking member is disposed within the lumen of the elongate pusher member. A moveable elongate releasing member is disposed within the lumen of the elongate pusher member. A filament is secured to the distal end of the elongate releasing member. The occlusive member is locked to the elongate releasing member when the filament passes through a securing member on the occlusive member and is pinched or wedged between the locking member and the elongate releasing member. The occlusive element is in an unlocked state when the elongate releasing member is retracted proximally relative to the elongate pusher member. The filament, along with the elongate releasing member, are retracted proximally until the filament is detached or uncoupled from the securing member of the occlusive member.
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Citations
11 Claims
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1. An occlusive device, comprising:
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an elongate pusher member having a distal end and a proximal end and a lumen extending between the distal and proximal ends; a locking member disposed in the lumen of the elongate pusher member; an elongate releasing member having a distal end and a proximal end, the distal end including a filament attached thereto, the elongate releasing member being moveable within the lumen of the elongate pusher member; and an occlusive element including a securing member positioned at a proximal end; wherein the securing member is locked to the elongate releasing member when the filament is looped through the securing member and a distal end of the filament is looped back to be pinched between the locking member and the elongate releasing member such that the filament is secured to the securing member thereby preventing axial movement of said occlusive element, and unlocked when the elongate releasing member is retracted proximally relative to the elongate pusher member such that the filament passes out of the securing member thereby releasing said occlusive element, wherein the locking member is sized to prevent the elongate releasing member from deploying out the distal end of the elongate pusher member. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An occlusive device, comprising:
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an elongate pusher member having a distal end and a proximal end and a lumen extending between the distal and proximal ends; a coil member secured to the distal end of the elongate pusher member; a locking member disposed in the lumen of the elongate pusher member; an elongate releasing member having a distal end and a proximal end, the distal end including a filament attached thereto, the elongate releasing member being moveable within the lumen of the elongate pusher member; and an occlusive element including a securing member positioned at a proximal end, wherein the securing member is locked to the elongate releasing member when the filament is looped through the securing member and a distal end of the filament is looped back to be wedged between the locking member and the elongate releasing member such that the filament is secured to the securing member thereby preventing axial movement of said occlusive element, and unlocked when the elongate releasing member is retracted proximally relative to the elongate pusher member such that the filament passes out of the securing member thereby releasing said occlusive element, wherein the locking member is sized to prevent the elongate releasing member from deploying out the distal end of the elongate pusher member. - View Dependent Claims (8, 9, 10, 11)
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Specification