IMPLANT DELIVERY DEVICE

• US 20170100126A1
• Filed: 12/21/2016
• Published: 04/13/2017
• Est. Priority Date: 04/14/2010
• Status: Active Grant

• Current Assignee: Microvention Incorporated (Terumo Corporation)
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Bowman, Heath, Le, Jake, Fitz, Matthew
• Granted Patent: US 10,517,604 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/12027 Type of occlusion A61B17/12113 takes precedence
• CPC Class Codes: A61B 17/12099 characterised by the location of the occluder
• CPC Class Codes: A61B 17/12113 within an aneurysm
• CPC Class Codes: A61B 17/12122 within the heart for closing a cardiac septal defect A61B17/0057
• CPC Class Codes: A61B 17/1214 Coils or wires
• CPC Class Codes: A61B 17/12154 having stretch limiting means
• CPC Class Codes: A61B 2017/00119 alarm; indicating an abnormal situation
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/12054 Details concerning the detachment of the occluding device from the introduction device
• CPC Class Codes: A61B 2017/12068 detachable by heat
• CPC Class Codes: A61B 2017/12072 the heat created by laser light
• CPC Class Codes: A61B 2017/12077 Joint changing shape upon application of heat, e.g. bi-metal or reversible thermal memory
• CPC Class Codes: A61B 2017/1209 detachable by electrical current or potential, e.g. electroactive polymer
• CPC Class Codes: A61B 2017/4233 Operations on Fallopian tubes, e.g. sterilization A61B2017/1125 takes precedence
• CPC Class Codes: A61B 2090/3966 Radiopaque markers visible in an X-ray image
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• 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: A61M 2025/0042 Microcatheters, cannula or the like having outside diameters around 1 mm or less
• CPC Class Codes: A61M 25/0021 : characterised by the form of the tubing A61M25/0054 takes precedence

Abstract

A system for delivering an implant within a patient is disclosed. The activation of the heater coil causes the degradation, melting or reduction of a component that brings the heater coil into or out of electrical contact with another component, or causes the individual loops of the coil to contact each other, thereby resulting a notable change in resistance in the circuit supplying the heater coil with electricity. A core wire terminates prior to the distal end of the device, allowing for greater flexibility.

Claims

1. A delivery device comprising:

an elongated tubular member;

an implant retention mechanism located within said tubular member and releasably securing an implant at a distal end of said tubular member;

a core wire for strengthening said elongated tubular member;

said core wire at least partially located within said tubular member;

said core wire having a distal end terminating between about 2 cm and about 4 cm from said distal end of said tubular member.

2. The delivery device of claim 1, wherein said distal end of said core wire terminates at about 3 cm from said distal end of said tubular member.

3. The delivery device of claim 1, further comprising a support coil located between said distal end of said tubular member and said distal end of said core wire.

4. The delivery device of claim 3, wherein said distal end of said tubular member is primarily supported by said support coil.

5. The delivery device of claim 3, wherein said core wire is located within a proximal end of said support coil but is absent from a distal end of said support coil.

6. The delivery device of claim 3, wherein said support coil comprises a first region that is densely coiled and a second region that is less densely coiled than said first region and is distal to said first region.

7. The delivery device of claim 6, wherein said support coil further comprises a third region that is less densely coiled than said first region and proximal to said first region.

8. A delivery device comprising:

an elongated tubular member;

an implant releasably connected to a distal end of said delivery device;

a core wire at least partially fixed within said tubular member for providing support;

said core wire having a distal end terminating between about 2 cm and 4 cm from said distal end of said delivery device; and

,

a support coil located between said distal end of said core wire and said distal end of said delivery device;

wherein said delivery device has a higher flexibility at said support coil than at said core wire.

9. The delivery device of claim 8, wherein said distal end of said core wire terminates at about 3 cm from said distal end of said delivery device.

10. The delivery device of claim 8, further comprising a heater coil located at a distal end of said support coil.

11. The delivery device of claim 8, wherein said distal end of said delivery device is primarily supported by said support coil.

12. The delivery device of claim 8, wherein said support coil comprises a first region that is densely coiled and a second region that is less densely coiled than said first region and is distal to said first region.

13. The delivery device of claim 8, wherein said core wire is located within a proximal end of said support coil but is absent from a distal end of said support coil.

14. A delivery device comprising:

an elongated tubular member having a proximal region and a distal region between about 2 cm and about 4 cm from a distal end of said elongated tubular member;

an implant retention mechanism located near said distal end of said elongated tubular member for selectively releasing an implant fixed to said distal end of said elongated tubular member; and

,

a core wire located solely within said proximal region of said elongated tubular member and terminating prior to said distal region of said elongated tubular member;

wherein said distal region of said elongated tubular member has a greater flexibility than said distal region of said elongated tubular member.

15. The delivery device of claim 14, wherein said distal region terminates at about 3 cm from said distal end of said elongated tubular member.

16. The delivery device of claim 14, further comprising a support coil located in said distal region of said elongated tubular member.

17. The delivery device of claim 16, wherein said distal region of said tubular member is primarily supported by said support coil.

18. The delivery device of claim 16, wherein said core wire is located within a proximal end of said support coil but is absent from a distal end of said support coil.

19. The delivery device of claim 16, further comprising a first support coil region that is densely coiled and a second support coil region that is less densely coiled than said first support coil region;

wherein said first support coil region is proximal to said second support coil region.

20. The delivery device of claim 19, further comprising a third support coil region that is less densely coiled than said first support coil region and proximal to said first support coil region.