SYSTEM FOR IMPLANTING MEMBRANE, SYSTEM AND METHOD FOR IMPLANTING MEMBRANE AND STENT RESPECTIVELY

• US 20170105859A1
• Filed: 08/13/2014
• Published: 04/20/2017
• Est. Priority Date: 06/25/2014
• Status: Active Grant

• Current Assignee: Beijing Angel-Reach Medical Technical Co., Ltd.
• Original Assignee: Chiron Venture Capital (Beijing) Co.Ltd.
• Inventors: Li, Lei
• Granted Patent: US 10,327,930 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod

Abstract

The present invention discloses a system for implanting membrane, a system and method for implanting a membrane and a stent respectively. The system for implanting membrane comprising: a body guide wire, a guide core, movably sleeved on the body guide wire, and a catheter, for releasably holding a membrane, the catheter is movably sleeved outside of the guide core, wherein the system for implanting membrane is provided with an adjusting mechanism for adjusting the axial position of the membrane released by the catheter, and the adjusting mechanism is detachably connected with the membrane. The adjusting mechanism detachably connected with the membrane according to the present invention can not only adjust the axial position of the released membrane, but also causes no influence on the normal work of the blood vessel of a patient after the adjustment and improves the implanting efficiency and effect of the membranous stent.

Claims

1. A system for implanting a membrane, comprising:

a body guide wire,

a guide core, movably sleeved on the body guide wire,

a catheter, for releasably holding a membrane, the catheter is movably sleeved outside of the guide core,

and an adjusting mechanism for adjusting the axial position of the membrane released by the catheter, the adjusting mechanism being detachably connected with the membrane, wherein the membrane comprises

a body portion, formed into a tubular structure,

at least one branch portion, connected to the body portion, and

a branch guide wire, passed into the branch portion,

wherein the adjusting mechanism comprises

a limiting knot, arranged on the branch guide wire, and

a limiting hole, located in front of the limiting knot and formed in the branch portion, wherein

the size of the limiting knot is larger than the size of the limiting hole.

2. The system of claim 1, wherein

the adjusting mechanism comprises:

a front end control wire, detachably connected to a front end of the body portion, and

a turn transmission structure, turning the front end control wire that is extended backwards after the turn,

wherein the catheter and the guide core are extended backwards respectively, and the front end control wire after being set out from the front end of the body portion and turned by the turn transmission structure arranged on the guide core is passed through the guide core and is extended backwards.

3. The system of claim 1, wherein the membrane

includes the body portion, formed into a tubular structure,

the adjusting mechanism includes

a front end control wire, detachably connected to the front end of the body portion, and connected with the guide core.

7. The system of claim 1, wherein the adjusting mechanism further comprises a back end control wire extended backwards, detachably connected to a back end of the body portion.

9. The system of claim 1, wherein the limiting hole is formed by a limiting ring connected to the branch portion by a connecting wire, and the limiting ring is spaced apart from the front end of the branch portion.

10. The system of claim 9, wherein a plurality of connecting wires are detachably connected to the branch portion along the circumferential direction uniformly.

11. The system of claim 1, wherein the limiting knot is detachably arranged on the branch guide wire.

4-6. -6. (canceled)

8. (canceled)

12. (canceled)

13. A system for implanting a membrane and a stent respectively, wherein the implanting system comprises:

a body guide wire;

a guide core, movably sleeved on the body guide wire;

a catheter, for releasably holding a membrane, the catheter movably sleeved outside of the guide core;

wherein the system for implanting the membrane is provided with an adjusting mechanism for adjusting the axial position of the membrane released by the catheter and the adjusting mechanism is detachably connected with the membrane,

wherein the membrane comprises a body portion, formed into a tubular structure, and at least one branch portion, connected to the body portion, a branch guide wire passed into the branch portion,

wherein the adjusting mechanism comprises a limiting knot arranged on the branch guide wire, and a limiting hole located in front of the limiting knot and formed in the branch portion, the size of the limiting knot larger than the size of the limiting hole; and

a stent conveying device for releasably holding and conveying a stent.

14. The system of claim 13, wherein the stent conveying device is sleeved on the guide core, the system further comprises:

a guide core locking piece, for fixing the guide core relative to the catheter, which is fixedly connected with the guide core and is provided with a first locking portion and a second locking portion, locked to the guide core in an unlockable manner respectively, and are spaced apart from each other along the axial direction of the guide core.

15. The system of claim 14, wherein the guide core locking piece has a first locking position and a second locking position,

at the first locking position, the first locking portion is in a unlock condition, the guide core is locked by the second locking portion in front of the first locking portion, the stent conveying device sleeved on the guide core is slidden between the first locking portion and the second locking portion along the guide core and;

at the second locking position, the guide core is locked by the first locking portion, the second locking portion is in a unlock condition, and the stent conveying device is moved forwards through the second locking portion.

16. The system of claim 13, wherein the stent conveying device is sleeved on the guide core, the guide core comprises

a guide wire hole, for enabling the body guide wire to pass through and

a control wire hole, formed around the guide wire hole, formed on a sidewall of the guide core and is extended along the same direction with the guide core,

an outer wall of the guide core is formed into a noncircular section structure in profiled connection with the stent conveying device, and the noncircular section structure is provided with a convex form, forming the control wire hole.

17. The system of claim 13, wherein the system is used for implanting the membrane and the stent at a three-branch vessel of an aortic arch.

18. A method for implanting a membrane and a stent respectively, wherein the membrane implanting method comprises a membrane implanting step and a stent implanting step which are carried out in sequence,

in the membrane implanting step:

inserting a body guide wire into a blood vessel firstly, and

moving a guide core movably sleeved on the body guide wire into the blood vessel therealong;

then,

movably sleeving a catheter releasably holding the membrane to the guide core and moving the catheter into the blood vessel along the guide core,

adjusting the axial position of the membrane through an adjusting mechanism after the membrane is released by the catheter, and

releasing the connection of the adjusting mechanism and the membrane, after the membrane is adjusted, where in the membrane implanting step includes;

inserting a branch guide wire into a branch vessel of the blood vessel,

movably sleeving the branch portion of the membrane on the branch guide wire, and

when adjusting the axial position of the branch portion of the membrane,

operating the branch guide wire to drive the branch portion to move forward.

19. The method of claim 18, wherein when adjusting the axial position of the body portion of the membrane, the body portion is driven to move forwards by a front end control wire, which is connected to the front end of the body portion, and turned backwards to extend outside the body, where the body portion is driven to move backwards by a back end control wire, which is connected to the back end of the body portion and extends outside the body backwards.

22. The method of claim 18, wherein in the stent implanting step,

releasably holding the stent in a stent conveying device, and

movably sleeving the stent conveying device on the guide core and being moved to the membrane along the guide core, where in the course of the stent implanting step, the guide core is fixed relative to the catheter throughout.

20-21. -21. (canceled)

23. (canceled)