METHODS AND SYSTEMS FOR TREATMENT OF ACUTE ISCHEMIC STROKE

• US 20130281788A1
• Filed: 06/18/2013
• Published: 10/24/2013
• Est. Priority Date: 08/05/2011
• Status: Active Grant

• Current Assignee: Route 92 Medical, Inc.
• Original Assignee: Silk Road Medical, Inc.
• Inventors: Garrison, Michi E.
• Granted Patent: US 10,779,855 B2
• Time in Patent Office: Days
• US Class Current: 600/208
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• 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 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/32037 for removing obstructions from inner organs or blood vessels, e.g. for atherectomy
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22039 eccentric
• CPC Class Codes: A61B 2017/22044 with a pointed tip
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2017/22067 Blocking; Occlusion A61B2017/22054 takes precedence
• CPC Class Codes: A61B 2017/22084 stone- or thrombus-dissolving
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/2217 single wire changing shape to a gripping configuration
• CPC Class Codes: A61B 2017/320733 with a flexible cutting or scraping element, e.g. with a whip-like distal filament member
• 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: A61M 1/3621 Extra-corporeal blood circuits single-needle circuits A61M1/30
• CPC Class Codes: A61M 1/82 Membrane pumps, e.g. bulbs
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 25/0662 Guide tubes
• CPC Class Codes: A61M 60/268 : the displacement member being flexible, e.g. membranes, diaphragms or bladders
• CPC Class Codes: A61M 60/43 : using vacuum at the blood pump, e.g. to accelerate filling

Abstract

An arterial access device has an internal lumen and a proximal port, the arterial access device sized and shaped to be inserted directly into an arterial access site in the common carotid artery such that the lumen provides a passageway for an interventional device to be inserted via the proximal port into the carotid artery. The arterial access device has a distal portion that is configured to be inserted into an arterial pathway through the access site, and a proximal portion configured to extend outward from the access site when the distal portion is in the arterial pathway.

Claims

1. A device for accessing an artery, comprising:

an arterial access device having an internal lumen and a proximal port, the arterial access device sized and shaped to be inserted directly into an arterial access site in the common carotid artery such that the lumen provides a passageway for an interventional device to be inserted via the proximal port into the carotid artery, the arterial access device having a distal portion that is configured to be inserted into an arterial pathway through the access site, and a proximal portion configured to extend outward from the access site when the distal portion is in the arterial pathway, and wherein the proximal portion has a length configured to provide a distance of between about 30 cm and 50 cm between the arterial access site and the proximal port.

2. A device as in claim 1, wherein the arterial access device comprises an introducer sheath.

3. A device as in claim 1, wherein the arterial access device is a multi-part, telescoping system.

4. A device as in claim 1, further comprising a distal catheter configured to be inserted into the arterial access device.

5. A device for treating an occlusion in a cerebral artery of a patient, comprising:

a distal catheter sized and shaped such that the distal catheter can be passed through a access site in a carotid artery to an occlusion in a cerebral artery via an arterial pathway, the catheter being configured to be passed through one or more bends in the artery without kinking, wherein at least one bend is greater than 45 degrees and is located within a predetermined distance from the arterial access site.

6. A device as in claim 5, wherein the bend is located within 5 cm of the arteriotomy.

7. A device as in claim 5, wherein the bend is located within 10 cm of the arteriotomy.

8. A device as in claim 5, wherein the bend is located within 15 cm of the arteriotomy.

9. A device as in claim 5, wherein a distance from the arteriotomy to the at least one bend is measured through a lumen of the artery.

10. A device for accessing an artery, comprising:

an arterial access device having an internal lumen and a proximal port, the arterial access device sized and shaped to be inserted directly into an arterial access site in the common carotid artery such that the lumen provides a passageway for an interventional device to be inserted into the artery, the arterial access device having a distal portion that is configured to be inserted into the artery, and a proximal portion configured to extend outward from the arteriotomy when the distal portion is in the arterial pathway, wherein the distal portion has a section of increased flexibility, the section of increased flexibility forming at least 10% of the length of the entire distal portion.

11. A device as in claim 10, wherein the section of increased flexibility forms at least 20% of the length of the entire distal portion.

12. A device as in claim 10, wherein the section of increased flexibility forms at least 30% of the length of the entire distal portion.

13. A device for treating an occlusion in a cerebral artery of a patient, comprising:

a distal catheter sized and shaped such that the distal catheter can be passed through a access site in the carotid artery to an occlusion in a cerebral artery via an arterial pathway, wherein the working length of the catheter has a section of increased flexibility, the section of increased flexibility forming at least 10% of the working length.

14. A device as in claim 13, wherein the catheter is configured to be passed through one or more bends in the artery without kinking, wherein at least one bend is greater than 45 degrees and is located within a predetermined distance from the arterial access site.

15. A device as in claim 14, wherein the bend is located within 5 cm of the arteriotomy.

16. A device as in claim 14, wherein the bend is located within 10 cm of the arteriotomy.

17. A device as in claim 14, wherein the bend is located within 15 cm of the arteriotomy.

18. A device for treating an occlusion in a cerebral artery of a patient, comprising:

a distal catheter sized and shaped such that the distal catheter can be passed through an arteriotomy to an occlusion in a cerebral artery via an arterial pathway, wherein the occlusion in the cerebral artery is located a distance X from the location of the arteriotomy, and wherein the distal catheter has a working length less than two times the distance X.

19. A device as in claim 18, wherein the distal catheter is shaped to be inserted axially through an internal lumen of a transcervical access sheath.

20. A device as in claim 18, wherein the distance X is measured along a pathway that travels solely through the lumens of one or more arteries.