SYSTEMS FOR PROVIDING OR MAINTAINING FLUID FLOW THROUGH BODY PASSAGES

• US 20170303927A1
• Filed: 07/13/2017
• Published: 10/26/2017
• Est. Priority Date: 03/08/2013
• Status: Active Grant

• Current Assignee: Inari Medical, Inc.
• Original Assignee: LLimflow GmbH
• Inventors: Dickinson, Robert Julian, Ferraresi, Roberto, Kum, Steven, Lenihan, Timothy, Pacey, Andrew Robert, Rothman, Martin Terry
• Granted Patent: US 10,285,800 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 18/245 for removing obstructions in blood vessels or calculi
• CPC Class Codes: A61B 2017/00252 for by-pass connections, i.e. connections from heart chamber to blood vessel or from blood vessel to blood vessel
• CPC Class Codes: A61B 2017/1103 Approximator
• CPC Class Codes: A61B 2017/1107 for blood vessels
• CPC Class Codes: A61B 2017/1139 Side-to-side connections, e.g. shunt or X-connections
• CPC Class Codes: A61B 2017/22095 accessing a blood vessel true lumen from the sub-intimal space
• CPC Class Codes: A61B 2017/22097 Valve removal in veins
• CPC Class Codes: A61B 2034/2063 Acoustic tracking systems, e.g. using ultrasound
• CPC Class Codes: A61B 8/0841 for locating instruments
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/844 folded prior to deployment
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• 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 2/958 : Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2/962 : having an outer sleeve
• CPC Class Codes: A61F 2002/068 : Modifying the blood flow model, e.g. by diffuser or deflector
• CPC Class Codes: A61F 2230/0067 : conical
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2250/001 : for adjusting a diameter
• CPC Class Codes: A61F 2250/0017 : differing in yarn density
• CPC Class Codes: A61F 2250/0029 : differing in bending or flexure capacity
• CPC Class Codes: A61F 2250/0031 : made from both resorbable and non-resorbable prosthetic parts, e.g. adjacent parts
• CPC Class Codes: A61F 2250/0039 : differing in diameter
• CPC Class Codes: A61M 27/002 : Implant devices for drainage of body fluids from one part of the body to another intraocular A61F9/00781; middle ear A61F11/202

Abstract

A device includes a first end portion, a second end portion, an intermediate portion, and a graft material. The first end portion has a first end diameter. The second end portion has a second end diameter smaller than the first end diameter. The first end portion comprises a first material. The second end portion comprises a second material different than the first material. The intermediate portion is between the first end portion and the second end portion. The intermediate portion tapers between the first end portion and the second end portion. The graft material is coupled to at least the intermediate portion.

Claims

1. (canceled)

2. A device for making a valve of a vessel incompetent, the reverse valvulotome comprising:

a longitudinal axis;

a distal portion comprising a plurality of blades, the plurality of blades having a retracted position in which the plurality of blades are parallel to the longitudinal axis and an expanded position in which the plurality of blades are non-parallel to the longitudinal axis, the plurality of blades each comprising a sharp surface facing distally and configured to at least partially ablate a valve in a vessel during distal advancement of the device through the vessel; and

a proximal portion comprising a handle configured to operate the plurality of blades between the retracted position and the expanded position,

wherein the device is configured to be pushed through the vessel in a direction opposite native fluid flow of the vessel from a fistula between the vessel and an artery to at least partially ablate the valve in the vessel without retrograde access.

3. The device of claim 2, wherein the handle is configured to longitudinally compress and radially expand the plurality of blades from the retracted position to the expanded position.

4. The device of claim 2, wherein the plurality of blades comprises three blades,

wherein the three blades are circumferentially spaced by 120 degrees,

wherein the three blades comprise shape memory material, and

wherein the handle is configured to allow the three blades to self-expand from the retracted position to the expanded position.

5. A kit comprising:

the device of claim 2; and

a vessel expansion device.

6. The kit of claim 5, wherein the vessel expansion device comprises at least one of:

a tourniquet, a balloon, and a LeMaitre device.

7. A device for making a valve of a vessel incompetent, the device comprising:

a distal portion comprising a blade, the blade having a retracted state and an expanded state, the blade comprising a sharp surface facing distally and configured to at least partially ablate a valve in a vessel during distal advancement of the device through the vessel in the expanded state; and

a proximal portion comprising a handle configured to operate the blade between the retracted state and the expanded state,

wherein the device is configured to be pushed through the vessel in a direction opposite native fluid flow of the vessel in the expanded state to at least partially ablate the valve in the vessel without retrograde access.

8. The device of claim 7, further comprising a plurality of blades including the blade, the plurality of blades each comprising a sharp surface facing distally and configured to at least partially ablate a valve in a vessel during distal advancement of the device through the vessel.

9. The device of claim 7, wherein the handle is configured to longitudinally compress and radially expand the blade from the retracted state to the expanded state.

10. The device of claim 7, further comprising three blades including the blade,

wherein each of the three blades comprises a sharp surface facing distally and configured to at least partially ablate a valve in a vessel during distal advancement of the device through the vessel,

wherein the three blades are circumferentially spaced by 120 degrees,

wherein the three blades comprise shape memory material, and

wherein the handle is configured to allow the three blades to self-expand from the retracted state to the expanded state.

11. The device of claim 7, wherein the blade is parallel to the longitudinal axis of the device in the retracted state and the blade is non-parallel to the longitudinal axis of the device in the expanded state.

12. A kit comprising:

the device of claim 7; and

a vessel expansion device.

13. The kit of claim 12, wherein the vessel expansion device comprises at least one of:

a tourniquet, a balloon, and a LeMaitre device.

14. A device for making a valve of a vessel incompetent, the device comprising:

a blade having a retracted configuration and an expanded configuration, the blade comprising a sharp surface facing distally and configured to at least partially ablate a valve in a vessel during advancement of the device through the vessel in a direction opposite native flow of the vessel in the expanded configuration.

15. The device of claim 14, configured to be pushed through the vessel from a fistula between the vessel and an artery to at least partially ablate the valve in the vessel without retrograde access.

16. The device of claim 14, configured to be pushed through the vessel in a direction of fluid flow of the vessel after forming a fistula between the vessel and an artery to at least partially ablate the valve in the vessel without retrograde access.

17. The device of claim 14, further comprising a handle configured to longitudinally compress and radially expand the blade between the retracted configuration and the expanded configuration.

18. The device of claim 14, further comprising three blades including the blade,

wherein each of the three blades comprises a sharp surface facing distally and configured to at least partially ablate a valve in a vessel during distal advancement of the device through the vessel,

wherein the three blades are circumferentially spaced by about 120 degrees,

wherein the three blades comprise shape memory material, and

wherein the handle is configured to allow the three blades to self-expand from the retracted configuration to the expanded configuration.

19. The device of claim 14, wherein the blade is parallel to a longitudinal axis of the device in the retracted configuration and the blade is non-parallel to the longitudinal axis of the device in the expanded configuration.

20. A kit comprising:

the device of claim 14; and

a vessel expansion device.

21. The kit of claim 20, wherein the vessel expansion device comprises at least one of:

a tourniquet, a balloon, and a LeMaitre device.