Single insertion delivery system for treating embolism and associated systems and methods

Patent metadata

Field	Value
Publication number	US-11849963-B2
Application number	US-202217865307-A
Country	US
Kind code	B2
Filing date	Jul 14, 2022
Priority date	Jan 26, 2018
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

Systems and methods for the intravascular treatment of clot material within a blood vessel of a human patient are disclosed herein. A method in accordance with embodiments of the present technology can include, for example, engaging an interventional device of a catheter system with clot material in a blood vessel and withdrawing the interventional device and the portion of the clot material through a guide catheter. In some embodiments, the catheter system can include an attachment/valve member coupled to a proximal portion of the guide catheter, and the method can include unsealing the attachment/valve member to facilitate withdrawing the interventional device through the attachment/valve member without significant retention of clot material within the attachment/valve member. The method can further include resealing and aspirating the guide catheter before advancing another interventional device to the clot material to again engage and remove clot material from the blood vessel.

First claim

I claim:

1. An aspiration system, comprising:
a vacuum source;
connection tubing fluidically coupled to the vacuum source;
a catheter fluidically coupled to the vacuum source;
a filter chamber coupled to the connection tubing at a location apart from the vacuum source, wherein the filter chamber comprises a housing and a filter within the housing, and wherein the housing includes—
a first end portion;
a second end portion;
a port at the first end portion configured to be fluidically coupled to the catheter; and
a fluid connector at the second end portion configured to be coupled to the connection tubing; and

wherein the filter is in the housing along a first flow path between the port and the fluid connector, and wherein
the catheter is fluidically coupled to the vacuum source via the filter chamber along a second flow path;
a flow controller fluidically coupling the filter chamber to the catheter, wherein the flow controller is along the second flow path between the filter chamber and the catheter such that flow from the catheter to the filter chamber is controlled proximate to the catheter; and
a hemostasis valve fluidically coupled to the catheter along a third flow path different than the second flow path, wherein the hemostasis valve is configured to maintain hemostasis by preventing proximal fluid flow along the third flow path when an interventional device is inserted through the hemostasis valve and the catheter.

2. The aspiration system of claim 1 wherein the flow controller comprises a flow control unit between the filter chamber and the catheter.

3. The aspiration system of claim 2 wherein the flow control unit comprises a stopcock valve.

4. The aspiration system of claim 2 wherein the flow control unit comprises a clamp.

5. The aspiration system of claim 1 , further comprising:
a check valve in the housing along the first flow path, the check valve being configured to allow flow in a direction from the port toward the fluid connector but prevent flow in a direction from the fluid connector to the port.

6. The aspiration system of claim 5 wherein the check valve is positioned between the fluid connector and the filter.

7. The aspiration system of claim 6 wherein the flow controller comprises a valve between the filter chamber and the housing.

8. The aspiration system of claim 1 , further comprising a check valve.

9. The aspiration system of claim 1 , further comprising a check valve in the housing between the second end portion and the filter.

10. The aspiration system of claim 1 wherein the first flow path is fluidically connected in serial to the second flow path.

11. An aspiration system, comprising:
a vacuum source;
connection tubing fluidically coupled to the vacuum source;
a filter chamber coupled to the connection tubing at a location apart from the vacuum source, wherein the filter chamber comprises a housing and a filter within the housing, and wherein the housing includes—
a first end portion;
a second end portion;
a port at the first end portion configured to be fluidically coupled to the catheter; and
a fluid connector at the second end portion configured to be coupled to the connection tubing; and

wherein the filter is in the housing along a first flow path between the port at the first end portion and the fluid connector at the second end portion;
a check valve in the housing along the first flow path, wherein the check valve is positioned between the fluid connector and the filter, and wherein the check valve is configured to allow flow in a direction from the port toward the fluid connector but prevent flow in a direction from the fluid connector to the port;
a catheter fluidically coupled to the vacuum source via the filter chamber along a second flow path; and
a flow controller fluidically coupling the filter chamber to the catheter, wherein the flow controller is along the second flow path between the filter chamber and the catheter such that flow from the catheter to the filter chamber is controlled proximate to the catheter.

12. The aspiration system of claim 11 wherein the flow controller comprises a valve between the filter chamber and the housing.

13. The aspiration system of claim 11 wherein the first flow path is fluidically connected in serial to the second flow path.

14. The aspiration system of claim 11 , further comprising a hemostasis valve fluidically coupled to the catheter along a third flow path different than the second flow path, wherein the hemostasis valve is configured to maintain hemostasis by preventing proximal fluid flow along the third flow path when an interventional device is inserted through the hemostasis valve and the catheter.

15. An aspiration system, comprising:
a vacuum source;
connection tubing fluidically coupled to the vacuum source;
a filter chamber coupled to the connection tubing at a location apart from the vacuum source, wherein the filter chamber comprises a housing and a filter within the housing, wherein the filter has a first end portion and a second portion, and wherein the second end portion is configured to be coupled to the connection tubing;
a catheter fluidically coupled to the vacuum source via the filter chamber along a flow path;
a flow controller fluidically coupling the filter chamber to the catheter, wherein the flow controller is along the flow path between the filter chamber and the catheter such that flow from the catheter to the filter chamber is controlled proximate to the catheter; and
a check valve in the housing between the second end portion and the filter.

16. The aspiration system of claim 15 wherein the flow path is a first flow path, and further comprising a hemostasis valve fluidically coupled to the catheter along a second flow path different than the first flow path, wherein the hemostasis valve is configured to maintain hemostasis by preventing proximal fluid flow along the second flow path when an interventional device is inserted through the hemostasis valve and the catheter.

Assignees

• Inari Medical Inc

Inventors

• Quick Richard

Classifications

• A61B17/22031 Primary

  Gripping instruments, e.g. forceps, for removing or smashing calculi (A61B17/221 takes precedence) · CPC title

• A61B17/22 Primary

  Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for · CPC title

• A61B17/221

  Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)} · CPC title

• A61M25/0082

  Catheter tip comprising a tool · CPC title

• A61M39/06

  Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof · CPC title