System And Method For Implant Delivery

• US 20170042548A1
• Filed: 08/11/2016
• Published: 02/16/2017
• Est. Priority Date: 08/11/2015
• Status: Active Grant

• Current Assignee: Terumo Corporation
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Lam, Cang
• Granted Patent: US 10,492,938 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/1204 temporary occlusion
• CPC Class Codes: A61B 2017/00336 with a protective sleeve, e.g. retractable or slidable
• CPC Class Codes: A61B 2017/1205 Introduction devices
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter
• CPC Class Codes: A61F 2/011 Instruments for their placement or removal
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2/97 the outer sleeve being splittable
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9665 with additional retaining means

Abstract

An implant delivery system is described. The implant delivery system utilizes an implant, implant wire, delivery sheath, and a torque device. The torque device may include a cutting element to slit the delivery sheath and a clamp device to fix the position of the implant delivery wire.

Claims

1. An implant delivery device, comprising:

a delivery sheath having an interior lumen;

an implant connected to an elongated implant wire;

said implant and said elongated implant wire sized for deployment through said delivery sheath;

a torque device having a first passage, a cutting element positioned to cut said delivery sheath, and a second passage splitting off from said second passage so as to separate said delivery sheath from said elongated implant wire.

2. The implant delivery system of claim 1, wherein said torque device further comprises a clamp mechanism configured to prevent said elongated implant wire from movement relative to said torque device.

3. The implant delivery system of claim 2, wherein said clamp mechanism further comprises a collet and a screw member that is selectively contactable with said collet, so as to increase or decrease an interior diameter of said collet.

4. The implant delivery system of claim 3, wherein said screw member is threaded onto a proximal end of a body of said torque device.

5. The implant delivery system of claim 1, wherein said cutting element comprises a sharpened edge positioned towards a distal end of said torque device.

6. The implant delivery system of claim 1, wherein said first passage extends between a proximal and distal end of said torque device.

7. The implant delivery system of claim 6, wherein said first passage further extends through a clamp mechanism located near a proximal end of said torque device.

8. The implant delivery system of claim 7, wherein said first passage extends through a collet and screw member of said clamp mechanism.

9. The implant delivery system of claim 1, wherein said implant is an embolic protection device.

10. A torque device for an implant delivery system, comprising:

a torque body having a first passage extending therethrough;

a cutting element disposed in said torque body and at least partially positioned in said first passage;

a second passage located in said torque body and connecting to said first passage near said cutting element;

said second passage extending away from said second passage;

wherein said cutting element creates a longitudinal slit on a sheath passing through said first passage and wherein said torque device directs said sheath with said longitudinal slit into said second passage while maintaining an implant delivery wire located in said sheath in said first passage.

11. The torque device of claim 10, further comprising a clamp mechanism connected to said first passage and being selectively clampable on said implant delivery wire.

12. The torque device of claim 11, wherein said clamp mechanism further comprises a collet and a screw member that is selectively engageable with said collet so as to increase or decrease an interior diameter of a passage through said collet.

13. The torque device of claim 12, wherein said screw member is threaded onto a proximal end of said torque body.

14. The torque device of claim 10, wherein said cutting element is oriented opposite of said second passage in said torque body.

15. The torque device of claim 14, wherein said cutting element further comprises a cutting element passage located within said first passage.

16. A method of delivering an implant comprising:

locking a clamp mechanism on a torque device to an elongated implant wire;

a distal end of said implant wire being connected to an implant;

proximally withdrawing a sheath through said torque device;

said sheath being at least partially disposed over said elongated implant wire;

creating a longitudinal slit portion in said sheath with said torque device; and

,

separating said longitudinal slit portion of said sheath from said elongated implant wire.

17. The method of claim 16, wherein said locking a clamp mechanism further comprising screwing a screw member of said clamp mechanism on to a collet of said clamp mechanism.

18. The method of claim 17, wherein said creating a longitudinal slit portion further comprises passing said sheath over a cutting element in said torque device.

19. The method of claim 18, wherein said separating said longitudinal slit portion further comprises directing said delivery sheath from a first passage to a second passage that is directed away from said elongated implant wire.

20. The method of claim 19, wherein said proximally withdrawing said sheath further comprises expanding said implant within a patient.