Handle for Delivering Medical Device

• US 20130268049A1
• Filed: 04/02/2013
• Published: 10/10/2013
• Est. Priority Date: 04/04/2012
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Munsinger, Joel R., Pederson, Gary J. Jr.
• Granted Patent: US 9,662,235 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: F04C 2270/0421 Controlled or regulated

Abstract

A handle for delivering a medical device comprises a housing having therein a wheel, a rack, and a catheter member. The wheel comprises a pinion gear that selectively engages gear teeth on the rack. The rack is selectively engaged and disengaged from the pinion gear in order to reduce the force necessary to manually pull the rack.

Claims

1. A stent deployment handle comprising:

a housing defining a cut-out, the housing having therein;

a wheel, the wheel having a pinion gear;

a rack, the rack having teeth selectively engaging the pinion gear; and

a catheter member extending along at least a portion of the rack;

the catheter member having affixed thereto a switch, the switch protruding through the cut-out and being rotatable, wherein rotation of the switch rotates the rack such that the teeth selectively engage and disengage the pinion gear.

2. The stent deployment handle of claim 1, wherein the rack has a channel and the catheter member is disposed within the channel.

3. The stent deployment handle of claim 1, wherein the wheel has a diameter between three and seven times the diameter of the pinion gear.

4. The stent deployment handle of claim 1 further comprising a tubular sheath attached to the rack, the catheter member extending at least partially within the tubular sheath.

5. The stent deployment handle of claim 1, wherein the rack is moveable axially with respect to the catheter member.

6. The stent deployment handle of claim 1, wherein the rack comprises a pull knob at the proximal end thereof.

7. The stent deployment handle of claim 6, wherein the rack has a channel and the channel extends through the pull knob.

8. A stent deployment handle comprising:

a housing and a rack deflector, the housing having therein;

a wheel, the wheel having a pinion gear; and

a rack, the rack having teeth selectively engaging the pinion gear and a channel extending along its length;

the housing defining an opening, and the rack deflector extending through the opening and into the channel, the rack deflector having a first position and a second position, in the first position the teeth being engaged with the pinion gear and in the second position the teeth being disengaged from the pinion gear.

9. The stent deployment handle of claim 8, wherein the rack deflector is slidable between the first and second positions.

10. The stent deployment handle of claim 8 further comprising a pawl contacting the pinion gear.

11. The stent deployment handle of claim 10, wherein the pawl comprises a metallic spring.