Therapeutic magnet
First Claim
1. A therapeutic magnetic bar for retention in the second stomach or reticulum of cattle, comprisingan elongate magnet formed of a sintered material having the general formula Mo.6 (Fe2 O3), in which MO represents an oxide or oxides of one or more of the metals chosen from the group comprising barium, strontium and lead, said magnet being large enough for permanent retention in said second stomach, having a rectangular cross section in planes transverse to its principal dimension and being magnetized transversely to said dimension with its pole faces comprising the surfaces of greatest area, the length in said principal dimension being at least twice any one of the dimensions in said cross section,anda continuous polymeric coating enveloping said magnet and having a substantially uniform thickness and a tear strength sufficient to resist rupture in the event that said magnet is fractured.
3 Assignments
0 Petitions
Accused Products
Abstract
A therapeutic magnet for retention in the stomach of an animal comprises a plastic coated sintered ceramic magnet. The magnet is elongate and of uniform rectangular cross section in planes transverse to its principal dimension. The direction of magnetization is transverse to the principal dimension. The plastic coating serves to retain the separate parts of the magnet in the event of inadvertent fracture of the magnet.
-
Citations
3 Claims
-
1. A therapeutic magnetic bar for retention in the second stomach or reticulum of cattle, comprising
an elongate magnet formed of a sintered material having the general formula Mo.6 (Fe2 O3), in which MO represents an oxide or oxides of one or more of the metals chosen from the group comprising barium, strontium and lead, said magnet being large enough for permanent retention in said second stomach, having a rectangular cross section in planes transverse to its principal dimension and being magnetized transversely to said dimension with its pole faces comprising the surfaces of greatest area, the length in said principal dimension being at least twice any one of the dimensions in said cross section, and a continuous polymeric coating enveloping said magnet and having a substantially uniform thickness and a tear strength sufficient to resist rupture in the event that said magnet is fractured.
-
3. A method of treating cattle for ingestion of ferrous metal objects, consisting of inserting into the second stomach or reticulum a bar comprising an elongate magnet formed of a sintered material having the general formula MO.6 (Fe2 O3), in which MO represents an oxide or oxides of one or more of the metals chosen from the group comprising barium, strontium and lead, said magnet being large enough for permanent retention in said second stomach, having a rectangular cross section in planes transverse to its principal dimension and being magnetized transversely to said dimension, with its pole faces comprising the surfaces of greatest area, the length in said principal dimension being at least twice any one of the dimensions in said cross section, and a continuous polymeric coating enveloping said magnet and having a substantially uniform thickness and a tear strength sufficient to resist rupture in the event that said magnet is accidentally fractured.
Specification