Implant delivery system
First Claim
1. A delivery system for a detachable medical device, the system comprising the detachable medical device having a first release portion, a deployment member having a second release portion, and a releasing element comprising a wire coil having a proximal end and a pull release wire attached to the proximal end, wherein the first and second release portions each having a helical element having windings defining a respective helical wound path therebetween, the wire coil of the releasing element and the windings of the first and second release portions having substantially the same diameter and pitch, such that the wire coil of the releasing element engages both of the helical wound paths between the windings of the first and second release portions to hold the first and second release portions together, the releasing element being detachable from the first and second release portions by a pull on the release wire, the pull allowing the proximal end of the wire coil to move slightly radially inwardly and then axially in the proximal direction, whereby to detach the first and second release portions from each other.
3 Assignments
0 Petitions
Accused Products
Abstract
A delivery system (50) for a detachable medical device (10) comprises a first helical wire (12) attached to the medical device, a second helical wire (18) attached to a deployment member (16) and a wire coil (30) which is arranged to interconnect the helical wires (12, 18). A pull on a release wire (32) at one end of the coil (30) detaches the coil from at least one of the helical wires whereby to detach the medical device (10) from the deployment member (16). In a modification a release coil (130) is arranged between concentric helical wires (112, 118).
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Citations
13 Claims
- 1. A delivery system for a detachable medical device, the system comprising the detachable medical device having a first release portion, a deployment member having a second release portion, and a releasing element comprising a wire coil having a proximal end and a pull release wire attached to the proximal end, wherein the first and second release portions each having a helical element having windings defining a respective helical wound path therebetween, the wire coil of the releasing element and the windings of the first and second release portions having substantially the same diameter and pitch, such that the wire coil of the releasing element engages both of the helical wound paths between the windings of the first and second release portions to hold the first and second release portions together, the releasing element being detachable from the first and second release portions by a pull on the release wire, the pull allowing the proximal end of the wire coil to move slightly radially inwardly and then axially in the proximal direction, whereby to detach the first and second release portions from each other.
- 12. An introducer system for an implantable medical device comprising an introducer device, a pusher member connected to the introducer device, and a handle movable relative to both the introducer device and the pusher member, a deployment member located distally of said pusher member and a medical device located distally of said deployment member, the medical device having a first release portion, the deployment member having a second release portion, and a releasing element which is arranged to interconnect the first and second release portions, the first and second release portions each having a helical element having windings defining a respective helical wound path therebetween and the releasing element comprising a wire coil having a proximal end, the wire coil engaging both of the helical wound paths between the windings of the first and second release portions to hold the first and second release portions together, the wire coil of the releasing element and the windings of the first and second release portions having substantially the same diameter and pitch, the releasing element being connected to said handle via a release wire, the arrangement being such that, upon a proximal movement of the handle relative to the rest of the introducer device, the releasing element is detachable from the first and second release portions, the proximal movement allowing the proximal end of the wire coil to move slightly radially inwardly and then axially in the proximal direction, whereby to detach the first and second release portions from each other.
Specification