MATTER CONVEYANCE SYSTEM

• US 20170079680A1
• Filed: 12/02/2016
• Published: 03/23/2017
• Est. Priority Date: 11/28/2012
• Status: Active Grant

• Current Assignee: Microvention Incorporated (Terumo Corporation)
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Bowman, Heath
• Granted Patent: US 10,610,256 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 17/320783 through side-hole, e.g. sliding or rotating cutter inside catheter
• CPC Class Codes: A61B 2017/00685 Archimedes screw
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61M 2039/0626 used with other surgical instruments, e.g. endoscope, trocar
• CPC Class Codes: A61M 39/06 Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof

Abstract

A matter conveyance system is located within a catheter and transports thrombus from a proximal portion of the catheter to a distal end of the catheter. In one example, the matter conveyance system is a screw or helix that rotates to cause movement of the thrombus.

Claims

1. A biological conveyance system, comprising:

a catheter sleeve having a lumen extending therethrough;

a hemostasis valve coupled to a proximal end of said catheter sleeve and having a port configured for aspiration of biological matter within said valve;

an elongated screw having a proximal end and a distal end;

said elongated screw positioned within said lumen of said catheter sleeve and within said hemostasis valve;

said elongated screw having a helical shape formed from a plurality of loops and a throughway extending between said distal end of said elongated screw and a location adjacent to said port configured for aspiration;

said throughway being formed entirely from said plurality of loops; and

,

a rotation mechanism coupled to said proximal end of said elongated screw and configured to rotate said elongated screw so as to proximally retract said biological material located within a patient.

2. The biological conveyance system of claim 1, wherein said biological conveyance system is further configured to allow a guidewire to be located within said throughway.

3. The biological conveyance system of claim 1, wherein said biological conveyance system is further configured to allow a clot retrieval microcatheter to be located within said throughway;

said clot retrieval microcatheter configured to physically grasp biological matter at a distal end of said catheter sleeve.

4. The biological conveyance system of claim 1, further comprising a shaft connected between said proximal end of said elongated screw and said rotation mechanism;

said shaft further comprising a shaft lumen aligned with said throughway.

5. The biological conveyance system of claim 1, further comprising an introducer sleeve located within said hemostasis valve and having a plurality of apertures exposing an interior of said introducer sleeve with an exterior of said introducer sleeve.

6. The biological conveyance system of claim 5, wherein said elongated screw is located within said introducer sleeve and wherein said plurality of apertures are located adjacent to said port configured for aspiration.

7. The biological conveyance system of claim 1, wherein said hemostasis valve is Y-adapter valve.

8. The biological conveyance system of claim 1, wherein said rotation mechanism comprises a motorized rotation mechanism, a non-motorized rotation mechanism, or both.

9. The biological conveyance system of claim 1, wherein said elongated screw is composed of tempered spring steel, stainless steel, polyethylene, UHMWPE, PVC, or ABS.

10. A thrombus transport system, comprising:

a catheter having a catheter lumen extending therethrough;

a hemostasis valve coupled to a proximal end of said catheter and having an aspiration port configured for connection to an aspiration device;

an elongated helical member rotatably-positioned within said catheter lumen and said hemostasis valve;

said elongated helical member having a plurality of loops that entirely form a throughway that extends along the entire length of said elongated helical member; and

,

a rotation mechanism connected to a proximal end of said elongated helical member so as to cause rotation of said elongated helical member;

wherein said thrombus transport system is configured to allow passage of a guidewire through said throughway of said elongated helical member.

11. The thrombus transport system of claim 10, wherein said thrombus transport system is further configured to allow passage of a clot retrieval microcatheter through said throughway.

12. The thrombus transport system of claim 10, wherein said elongated helical member is located adjacent to said aspiration port.

13. The thrombus transport system of claim 10, further comprising an introducer sleeve located within said hemostasis valve and having a plurality of apertures exposing an interior of said introducer sleeve with an exterior of said introducer sleeve.

14. The thrombus transport system of claim 13, wherein said elongated helical member is located within said introducer sleeve and wherein said plurality of apertures are located adjacent to said aspiration port.

15. The thrombus transport system of claim 10, wherein said elongated helical member is composed of tempered spring steel, stainless steel, polyethylene, UHMWPE, PVC, or ABS.

16. The thrombus transport system of claim 10, wherein said elongated helical member has an outer diameter between about 0.017″

to about 0.068.

17. The thrombus transport system of claim 10, wherein at least some of said plurality of loops have a loop thickness between about 0.005″

and about 0.5″

.

18. The thrombus transport system of claim 10, wherein said throughway has a diameter of about 0.028″

.

19. A method of using a biological conveyance system, comprising:

advancing a guidewire through a port of said biological conveyance system that is in communication with a hemostasis valve;

further advancing said guidewire within a throughway formed entirely from a plurality of helical loops of an elongated screw;

said elongated screw being located within a catheter sleeve;

rotating said elongated screw and applying aspiration to said hemostasis valve so as to draw biological matter proximally within said catheter sleeve and into said hemostasis valve.

20. The method of claim 19, wherein said advancing said guidewire through said port further comprises advancing said guidewire through an aspiration port of said hemostasis valve.