VARIABLE SPEED SELF-EXPANDING STENT DELIVERY SYSTEM AND LUER LOCKING CONNECTOR

• US 20100094399A1
• Filed: 12/17/2009
• Published: 04/15/2010
• Est. Priority Date: 04/30/2001
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Vogel, Michael, Dorn, Jurgen
• Granted Patent: US 8,062,344 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence

Abstract

A stent delivery system that includes an inner member and an outer retractable sheath is operated by a handle that permits retraction of the sheath at more than one speed. The sheath may be retracted in small, incremental steps or in a single, more rapid stroke. Means are provided for releasably locking the inner member and outer sheath in a fixed position as well as to facilitate admission of liquid into the device.

Claims

1-24. -24. (canceled)

25. A stent delivery system, comprising:

a hub coupled to an outer tube;

a slider coupled to the hub, the slider disposed over a track fixed to a housing, the slider having a first position corresponding to a distal position of the outer tube constraining a stent, and a second position corresponding to a proximal position of the outer tube releasing the stent, the slider having a portion protruding outside of the housing enabling manual movement of the slider to the second position; and

a trigger mounted to the housing, wherein actuation of the trigger incrementally moves the slider along the track.

26. The housing according to claim 25, further comprising a pull wire having a first end attached to the slider and a second end coupled to a take-up reel.

27. The housing according to claim 26, wherein the take-up reel carries a gear having teeth that engage with complementary teeth on a ratchet element that is mounted to the trigger.

28. The housing according to claim 27, wherein the trigger is biased to a rest position by a leaf spring mounted to the housing.

29. The housing according to claim 28, further comprising a pawl mounted to the housing engaging the gear teeth to prevent movement of the gear when the trigger returns to its rest position following actuation.

30. The housing according to claim 25, wherein the track is an integral part of the housing.

31. The housing according to claim 25, wherein the track comprises a pair of parallel rails.

32. The housing according to claim 25, further comprising a first marker on the track and a second marker on the slider.

33. A handle for a stent delivery system including an outer sheath covering and constraining a stent in a delivery configuration, the handle comprising:

a housing;

a hub coupled to the outer sheath;

a slider coupled to the hub, the slider disposed over a track fixed to the housing, the slider having a portion protruding outside of the housing enabling manual advancement of the slider along the track;

a pull wire having a first end attached to the slider and a second end coupled to a take-up reel, the take-up reel including a gear having teeth that engage with complementary teeth on a ratchet element; and

a trigger mounted to the housing and coupled to the ratchet element, wherein actuation of the trigger incrementally advances the slider along the track.

34. The housing according to claim 34, wherein the slider mechanical advantage is different from the trigger mechanical advantage.