EXTERNAL FIXATION DEVICE AND FIXATION DEVICE SET

摘要

A fixation device set S includes an external fixation device 10 which is attached on one end-side of first and second pins P1, P2; and a pin fixture 100 which is attached on the other end-side thereof. The external fixation device 10 includes a first and a second permanent magnets 32, 34 disposed with their same poles opposed to each other; a first holding portion 14 provided in the first permanent magnet 34; a second holding portion 36 provided in the second permanent magnet 34; first limiter portions 16a, 16b sandwiching the first and the second permanent magnets 32, 34 from a second direction; and second limiter portions 66 connecting the first limiter portions 16a, 16b to each other. The first pins P1 are inserted through through-holes 20 in the first holding portion 14, whereas the second holding portion 36 is attached to the second pin P2 via a ball joint 50.

主权项

1. An external fixation device for keeping a first bone portion and a second bone portion separated from each other in a joint, by attaching to a first pin which penetrates the first bone portion and to a second pin which penetrates the second bone portion, the device comprising:
a first permanent magnet and a second permanent magnet which are opposed to each other, with their same poles facing each other; a first holding portion which is disposed on a surface of the first permanent magnet, on a side facing away from a surface opposing to the second permanent magnet, and is attached to the first pin; a second holding portion which is disposed on a surface of the second permanent magnet, on a side facing away from a surface opposing to the first permanent magnet, and is attached to the second pin; and a pair of first limiter portions which allow movement of the first permanent magnet and the second permanent magnet in a first direction defined as a direction of their repulsion force by sandwiching the first permanent magnet and the second permanent magnet from a second direction defined as a direction perpendicular to the first direction, and limit movement thereof in the second direction.