| 摘要 |
<p>Abstract A sustained release capsule comprising a hollow tubular body sealed at a first end, a movable piston within the body, a spring biasing the piston towards a second end of the body, an apertured cover at the second end to define a first chamber between the movable piston and the apertured cover capable of containing a first dose of material within the hollow tubular body for subsequent sustained release through the apertured cover into the rumen of an animal, wherein an overcap is releasably attached to the device at one end thereof to form a void between an end of the device and the overcap capable of containing a second dose of material within the void so that in use the second dose of material is delivered to the rumen when the overcap is breached or detaches from the device. WO 2011/014078 PCT/NZ2010/000146 AF -100- A Fig. 1 110 103 10 10120 -10210 :104 Fig. 2 -108 -102- - -120 104r Fig. 3</p> |
