Implant delivery system with marker interlock

• US 20040087900A1
• Filed: 11/01/2002
• Published: 05/06/2004
• Est. Priority Date: 11/01/2002
• Status: Active Grant

• Current Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Original Assignee: Ev3 Peripheral Inc. (Medtronic Plc)
• Inventors: Thompson, Paul J., Lee, Nathan T.
• Granted Patent: US 6,814,746 B2
• Time in Patent Office: Days
• US Class Current: 604/96.01
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91591 Locking connectors, e.g. using male-female connections
• CPC Class Codes: A61F 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

An implant delivery system is disclosed. The delivery system includes an elongated member having an implant mounting location. A self-expandable implant is mounted at the implant mounting location. The implant is held in a compressed orientation by a retractable sheath. An interlock structure prevents the implant from deploying prematurely as the sheath is retracted. The interlock structure includes radio-opaque markers that identify the position of the implant.

Claims

1. A medical device comprising:

an implant including a plurality of struts having terminal ends, at least some of the terminal ends of the struts including enlargements, the implant also including radiopaque markers positioned within at least some of the enlargements; and

an implant delivery system including an inner member and an outer sheath that mounts over the inner member, the delivery system including an implant mounting location at which the implant mounts, the outer sheath being movable from a transport position where the sheath covers the implant at the implant mounting location, to a deploy position where the implant is exposed, the implant delivery system further including an interlock structure for preventing premature deployment of the implant, the interlock structure defining a receptacle for receiving at least one of the enlargements.

2. The medical device of claim 1, wherein the receptacle receives at least two of the enlargements.

3. The medical device claim 2, wherein the enlargements are circumferentially compressed together within the receptacle.

4. The medical device of claim 2, wherein the receptacle receives more than two of the enlargements.

5. The medical device of claim 1, wherein the delivery system includes a plurality of receptacles for receiving the enlargements.

6. The medical device of claim 5, wherein the delivery system includes a separate receptacle for each of the enlargements.

7. The medical device of claim 5, wherein each of the receptacles receives at least two of the enlargements.

8. The medical device of claim 5, wherein at least one of the receptacles receives at least two of the enlargements, and at least one of the receptacles receives only a single one of the enlargements.

9. The medical device of claim 1, wherein at least some of the enlargements define openings, and wherein the radiopaque markers include inserts positioned within the openings.

10. The medical device of claim 9, wherein the openings include through-holes.

11. A medical device comprising:

an implant including a plurality of struts having terminal ends, at least some of the terminal ends of the struts including enlargements; and

an implant delivery system including an inner member and an outer sheath that mounts over the inner member, the delivery system including an implant mounting location at which the implant mounts, the outer sheath being movable from a transport position where the sheath covers the implant at the implant mounting location, to a deploy position where the implant is exposed, the implant delivery system further including an interlock structure for preventing premature deployment of the implant, the interlock structure defining a receptacle for receiving at least two of the enlargements.

12. The medical device claim 11, wherein the enlargements are circumferentially compressed together within the receptacle.

13. The medical device of claim 12, wherein the receptacle receives more than two of the enlargements.

14. The medical device of claim 11, wherein the delivery system includes a plurality of receptacles for receiving the enlargements.

15. The medical device of claim 14, wherein each of the receptacles receives at least two of the enlargements.

16. The medical device of claim 15, wherein at least one of the receptacles receives at least two of the enlargements, and at least one of the receptacles receives only a single one of the enlargements.

17. A medical device comprising:

an implant including a plurality of struts having terminal ends, at least some of the terminal ends of the struts including enlargements; and

an implant delivery system including an inner member and an outer sheath that mounts over the inner member, the delivery system including an implant mounting location at which the implant mounts, the outer sheath being movable from a transport position where the sheath covers the implant at the implant mounting location, to a deploy position where the implant is exposed, the implant delivery system further including an interlock structure for preventing premature deployment of the implant, the interlock structure defining a single receptacle for receiving a single one of the enlargements.

18. A medical device comprising:

an implant including a plurality of struts having terminal ends; and

an implant delivery system including an inner member and an outer sheath that mounts over the inner member, the delivery system including an implant mounting location at which the implant mounts, the outer sheath being movable from a transport position where the sheath covers the implant at the implant mounting location, to a deploy position where the implant is exposed, the implant delivery system further including an interlock structure for preventing premature deployment of the implant, the interlock structure compressing at least some of the terminal ends together in a circumferential direction when the implant and the implant structure are interlocked.