Magnetic Vascular Anastomosis Device for Rapid Liver Transplantation

20200375600

16/775261

January 28, 2020

A magnetic vascular anastomosis device for rapid liver transplantation includes a magnetic ring assembly and a base member assembly. The magnetic ring assembly includes an O-shaped magnetic ring and a C-shaped magnetic ring coupled at a donor liver blood vessel and a receptor liver blood vessel respectively. The base member assembly includes an O-shaped base member and a C-shaped base member. The base member is categorized into a slotted base member, a columned base member, and a hooked base member for different surgical suture methods. The magnetic vascular anastomosis device incorporates with the magnetic attraction between magnetic rings, such that the entire liver transplantation vascular anastomosis process is fast, safe, and reliable. The vascular anastomosis device is able apply for different operations involving vascular anastomosis such as kidney transplantation, lung transplantation, heart transplantation, and maxillofacial surgery.

1. A magnetic vascular anastomosis device for rapid liver transplantation, comprising: a O-shaped magnetic ring (1), which has a cylindrical shape or an oval shape; a C-shaped magnetic ring (2) having a longitudinal through notch (20) extended from an inner circumferential wall of the C-shaped magnetic ring (2) to an outer circumferential wall thereof, wherein a cross sectional shape of the O-shaped magnetic ring (1) is the same as a cross sectional shape of the C-shaped magnetic ring (2); a O-shaped base member comprising a O-shaped base body (100) having a central through slot (101), a O-shaped protrusion (5) extended from the base body at a position around the central through slot (101), and a structure for proline threading provided at the O-shaped base body (100) outside the O-shaped protrusion (5); and a C-shaped base member comprising a C-shaped base body (200) having a central through slot (201), a C-shaped protrusion (15) extended from the base body at a position around the central through slot (201), and a structure for proline threading provided at the C-shaped base body (200) outside the C-shaped protrusion (15), wherein the C-shaped protrusion (15) and the C-shaped base body (200) form a through gap (202), wherein the C-shaped base member further comprises a positioning member (16) integrally, outwardly and radially extended from the C-shaped protrusion (15), wherein a width of the positioning member (16) is equal or slightly smaller than a width of the longitudinal through notch (20) of the C-shaped magnetic ring (2).

2. The magnetic vascular anastomosis device, as recited in claim 1, wherein each of the O-shaped magnetic ring (1) and the C-shaped magnetic ring (2) is made of neodymium iron boron, aluminum nickel cobalt, ferrite or samarium cobalt, wherein a surface of each of the O-shaped magnetic ring (1) and the C-shaped magnetic ring (2) is coated with titanium nitride, polytetrafluoroethylene or parylene, wherein an outer diameter of each of the O-shaped magnetic ring (1) and the C-shaped magnetic ring (2) matches with an inner diameter of a blood vessel to be anastomosed,

3. The magnetic vascular anastomosis device, as recited in claim 1, wherein each of the C-shaped base member and the C-shaped base member is made of metal material or a polymer material, and a surface of each of the C-shaped base member and the C-shaped base member is coated with titanium nitride, polytetrafluoroethylene, or parylene.

4. The magnetic vascular anastomosis device, as recited in claim 1, wherein, for the O-shaped base member, the structure for proline threading comprises a plurality of first axial holes (4) outwardly and evenly distributed at an outer circumferential portion of the O-shaped base body (100) to form a O-shaped slotted base member (3).

5. The magnetic vascular anastomosis device, as recited in claim 1, wherein, for the O-shaped base member, the structure for proline threading comprises a plurality of radial columns (7) outwardly and evenly distributed at an outer circumferential portion of the base member to form a O-shaped columned base member (6).

6. The magnetic vascular anastomosis device, as recited in claim 1, wherein, for the O-shaped base member, the structure for proline threading comprises a plurality of first hooks (9) downwardly and evenly distributed at a bottom side of the O-shaped base body (100) to form a O-shaped hooked base member (8).

7. The magnetic vascular anastomosis device, as recited in claim 1, wherein, for the C-shaped base member, the structure for proline threading comprises a plurality of radial holes (17) outwardly and evenly distributed at an outer circumferential portion of the C-shaped base body (200) to form a C-shaped slotted base member (10).

8. The magnetic vascular anastomosis device, as recited in claim 1, wherein, for the C-shaped base member, the structure for proline threading comprises a plurality of radial columns (18) outwardly and evenly distributed at an outer circumferential portion of the C-shaped base body (200) to form a C-shaped columned base member (11).

9. The magnetic vascular anastomosis device, as recited in claim 1, wherein, for the C-shaped base member, the structure for proline threading comprises a plurality of second hooks (19) downwardly and evenly distributed at a bottom side of the C-shaped base body (200) to form a C-shaped hooked base member (12), wherein hooking ends of the second hooks (19) are extended toward a center of the central through slot (201) of the C-shaped base body (200).

10. The magnetic vascular anastomosis device, as recited in claim 1, wherein the O-shaped magnetic ring (1) is coaxially coupled with the O-shaped protrusion (5) to form a O-shaped magnetic assembling ring (13), wherein the C-shaped magnetic ring (2) is coaxially coupled with the C-shaped protrusion (15) to form a C-shaped magnetic assembling ring (14).

11. The magnetic vascular anastomosis device, as recited in claim 1, wherein a magnetic pole of an exposed side of the O-shaped magnetic ring (1) is opposite to a magnetic pole of an exposed side of the C-shaped magnetic ring (2), such that the O-shaped magnetic ring (1) and the C-shaped magnetic ring (2) are magnetic attracted with each other.

12. The magnetic vascular anastomosis device, as recited in claim 1, wherein the O-shaped magnetic ring (1) and the C-shaped magnetic ring (2) are made of magnetic material.

13. The magnetic vascular anastomosis device, as recited in claim 1, wherein a cross sectional shape of the O-shaped protrusion (5) is the same as the cross sectional shape of the O-shaped magnetic ring (1), wherein a cross sectional size of the O-shaped protrusion (5) is equal or slightly smaller than a cross sectional size of the O-shaped magnetic ring (1).

14. The magnetic vascular anastomosis device, as recited in claim 1, wherein a cross sectional shape of the C-shaped protrusion (15) is the same as the cross sectional shape of the C-shaped magnetic ring (2), wherein a cross sectional size of the C-shaped protrusion (15) is equal or slightly smaller than a cross sectional size of the C-shaped magnetic ring (2).

15. The magnetic vascular anastomosis device, as recited in claim 1, wherein the O-shaped protrusion (5) is upwardly and coaxially extended from an inner circumferential portion of the O-shaped base body (100) at an upper side thereof to encircle around the central through slot (101) of the O-shaped base body (100).

16. The magnetic vascular anastomosis device, as recited in claim 1, wherein the C-shaped protrusion (15) is upwardly and coaxially extended from an inner circumferential portion of the C-shaped base body (200) at an upper side thereof to encircle around the central through slot (201) of the C-shaped base body (200).

17. The magnetic vascular anastomosis device, as recited in claim 1, wherein the O-shaped magnetic ring (1) is coupled at the O-shaped base body (100) to encircle the O-shaped protrusion (5) within the O-shaped magnetic ring (1).

18. The magnetic vascular anastomosis device, as recited in claim 1, wherein the C-shaped magnetic ring (2) is coupled at the C-shaped base body (200) to encircle the C-shaped protrusion (15) within the C-shaped magnetic ring (2).

19. The magnetic vascular anastomosis device, as recited in claim 1, wherein, for the O-shaped base member, the structure for proline threading is extended out of the O-shaped base body (100) and is exposed when the O-shaped magnetic ring (1) is coupled at the O-shaped base body (100).

20. The magnetic vascular anastomosis device, as recited in claim 1, wherein, for the C-shaped base member, the structure for proline threading is extended out of the C-shaped base body (200) and is exposed when the C-shaped magnetic ring (2) is coupled at the C-shaped base body (200).

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