IP Library Granted Patent US 8,142,454
Granted Patent B2
US 8,142,454 · App. 12/189,330 · Granted Mar 27, 2012

Apparatus and method for magnetic alteration of anatomical features

Assignee: The Regents of the University of California, San Francisco
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Quick Facts
Patent No.
US 8,142,454
App. No.
12/189,330
Granted
Mar 27, 2012
Kind
B2
Abstract

A system for auto-anastomosing a region of the body using magnetic members that may be individually delivered to different locations in the body. The magnetic members have a polar alignment that generates an attractive force to compress tissue in the region between them. The tissue in the region necroses as a result of the compressive force such that tissue surrounding the necrosed tissue heals together to form an anastomosis. A cutting member may be coupled to either the first or second magnetic member to create a temporary opening in the tissue.

Claims (10)

1. A system for auto-anastomosing a region of the body, comprising:

a. a first implant comprising: a body, a first magnet with a first magnetic polarity, a first through-hole, and a terminal annulus defining a convex mating surface, and wherein said convex mating surface has a first radius and

b. a second implant comprising: a body, a second magnet with a second magnetic polarity opposite from said first magnetic polarity, a second through-hole, and a terminal annulus defining a concave mating surface, wherein said concave mating surface extends within the body of said second implant, and wherein said concave mating surface has a second radius, wherein said second radius is greater than said first radius, wherein while said convex mating surface faces said concave mating surface, a magnetic mating of said surfaces causes the terminal annulus of the first implant to extend within the body of the second implant and apply a non-uniform compressive force across two adjacent structures disposed in between said two mating surfaces, wherein said non-uniform compressive force is capable of forming an anastomosis between said two adjacent structures.

2. The system for auto-anastomosing a region of the body of claim 1 , wherein said non-uniform compressive force across said two adjacent structures increases radially inward toward said first and second through-holes.

3. The system for auto-anastomosing a region of the body of claim 1 , wherein said non-uniform compressive force is strong enough to generate a necrosis tissue region of said two adjacent structures.

4. The system for auto-anastomosing a region of the body of claim 3 , wherein said necrosis tissue region departs from said two adjacent structures to form a flow passage.

5. The system for auto-anastomosing a region of the body of claim 4 , wherein said flow passage forms a fistula, wherein said fistula passes said implants there through.

6. The system for auto-anastomosing a region of the body of claim 1 , wherein said non-uniform compressive force comprises a force at the perimeter of said implants that is strong enough to fuse said two adjacent structures while still promoting tissue growth within said two fused structures.

7. The system for auto-anastomosing a region of the body of claim 1 , wherein said convex mating surface is a single convex mating surface.

8. The system for auto-anastomosing a region of the body of claim 1 , wherein said concave mating surface is a single concave mating surface.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 18, 2008
From: HARRISON, MICHAEL R.; FECHTER, RICHARD J.; MORAN, ARTHUR; CHRISTENSEN, DARRELL
To: REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE
Reel/Frame 021562/0118 →
Continuity (4)
Continuation In Part 11677700 · Feb 22, 2007
Continuation In Part 11431416 · May 9, 2006
Continuation In Part 10954995 · Sep 29, 2004
Related Publication 20090048618A1 · Feb 19, 2009