| 摘要 |
A SUSTAINED RELEASE CAPSULE [8] ADAPTED TO BE INSERTED INTO THE RUMEN OF A RUMINANT ANIMAL AND MEANS FOR RETENTION OF THE CAPSULE [8] IN THE RUMEN.A SUSTAINED RELEASE CAPSULE [8] ADAPTED TO BE INSERTED INTO THE RUMEN OF A RUMINANT ANIMAL THROUGH ITS OESOPHAGUS AND RETAINED WITHIN THE RUMEN OVER A PROLONGED PERIOD TO CONTINUOUSLY DELIVER A BIOLOGICALLY ACTIVE COMPOSITION [32] CARRIED IN THE CAPSULE [8], COMPRISING AN ELONGATED TUBULAR BODY [10] COMPRISING A TUBE [12] AND AN END CAP [12] SECURED TO ONE END THEREOF FOR SUBSTANTIALLY ENCLOSING THE BIOLOGICALLY ACTIVE COMPOSITION [32], THE OTHER END OF THE CAPSULE [8] BEING A DELIVERY END, THE BODY [10] HAVING AN OPENING [20] AT THE DELIVERY END OF THE CAPSULE [8] FOR DELIVERY OF THE COMPOSITION [32] TO THE RUMEN, AND A PLURALITY OF RETENTION ARMS [44] ATTACHED TO OR FORMED INTEGRALLY WITH THE CAP [12], THE ARMS [44] BEING ADAPTED TO EXTEND OUTWARDLY FROM THE CAP [12] FOR RETAINING THE CAPSULE [8] IN THE RUMEN, THE ARMS [44] BEING RESILIENT TO ENABLE THEM TO BEND FROM THEIR OUTWARDLY EXTENDING POSITIONS TOWARD THE BODY [10] SO THAT THEY LIE ALONGSIDE THE BODY [10] ALLOWING THE CAPSULE [8] TO BE INSERTED THROUGH THE ANIMAL''S OESOPHAGUS, THE RESILIENT ARMS [44] NORMALLY EXTENDING FROM THE BODY [10] AT AN ANGLE BETWEEN 75° AND 90° WITH RESPECT TO THE AXIS OF THE TUBULAR BODY [10], AND FOR EACH ARM [44] SAID CAP [12] HAS AN EXTERNAL CURVED SURFACE DISPOSED WITH RESPECT TO THE ARM [44] SO THAT WHEN THE ARM [44] IS BENT TOWARD THE BODY [10], THE ARM [44] CONTACTS THE CURVED SURFACE AND THE CURVED SURFACE CONTROLS THE BENDING OF THE ARM [44] SO THAT THE ARM [44] DOES NOT BEND ABRUPTLY, SAID ARMS [44] BEING ADAPTED TO RETURN TO THEIR OUTWARDLY EXTENDING POSITIONS WHEN THE CAPSULE [8] REACHES THE RUMEN, CHARACTERISED IN THAT SAID CAP [12] IS SECURED TO SAID ONE END BY MEANS OF AT LEAST TWO CIRCUMFERENTIAL BEADS [30] HAVING AT LEAST ONE SEALING RING [31] LOCATED THEREBETWEEN. (FIG. 2)
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