IMPLANT DELIVERY SYSTEM

摘要

An implant delivery system is disclosed which includes an inner tube assembly, an outer tube assembly and a functional handle. The functional handle includes a threaded rod, a push-pull control member, a casing tube, a displacement tube, an inner tube fixing member, an outer tube fixing member and a stability tube fixing member. The threaded rod extends through a bore of the displacement tube. A fastener of the push-pull control member is able to engage a thread provided on a leading portion of the threaded rod. A trailing portion of the threaded rod is provided with a knob. The push-pull control member includes a fastener, springs and a button. The fastener is able to extend through a slot to engage a thread of the threaded rod in the displacement tube. The springs are configured to cause an automatic locking of the fastener and the threaded rod. The button is provided on the fastener. A cylindrical shell drives the displacement tube to move forward or backward along its longitudinal axis to cause the outer tube assembly to accordingly advance or retract. The delivery system can quickly, stably and accurately insert an implant into a target location.

主权项

1. An implant delivery system, comprising an inner tube assembly, an outer tube assembly and a functional handle, wherein the inner tube assembly comprises, from a proximal end to a distal end in the sequence set forth, a reinforcing tube, a proximal inner tube, a stent ear holder, a distal inner tube and a tip; the inner tube assembly is configured to allow a guide wire to extend therethrough; the outer tube assembly is disposed over the inner tube assembly and comprises, from a proximal end to a distal end, a proximal outer tube and a stent capsule, the proximal outer tube being received within a stability tube; the functional handle is connected to both the inner tube assembly and the outer tube assembly and the functional handle comprises a threaded rod, a push-pull control member, a casing tube, a displacement tube, an inner tube fixing member, an outer tube fixing member and a stability tube fixing member, the inner tube fixing member being in fixed connection with a proximal portion of the inner tube assembly; the outer tube fixing member being in fixed connection both with a proximal end of the outer tube assembly and with a distal end of the displacement tube, the stability tube fixing member being in fixed connection with a proximal end of the stability tube and fixed to a distal end of the casing tube; the displacement tube is received within the casing tube such that the displacement tube moves forward and backward in the casing tube only along its axis direction; the threaded rod extends through a bore of the displacement tube; the threaded rod defines a leading portion and a trailing portion, the trailing portion of the threaded rod being provided with a knob; the push-pull control member comprises a fastener and a button, the button being provided on the fastener; the displacement tube defines a slot compatible with the fastener, and the fastener is able to extend through the slot to engage a thread of the threaded rod in the displacement tube; the push-pull control member further comprises a cylindrical shell and springs, and the cylindrical shell is disposed over the casing tube such that the button is able to extend out of the cylindrical shell through an opening thereof; the fastener assumes an annular shape and is engageable with the thread provided on the leading portion of the threaded rod; and the springs are disposed between the fastener and the displacement tube and configured to cause an automatic locking of the fastener and the threaded rod.