Dispenser for delivering drug to livestock
First Claim
Patent Images
1. A dispensing device for delivering a beneficial agent formulation to an environment of use, the dispensing device comprising(a) a wall that defines an internal space, said wall comprising in at least a part a composition that permits the passage of fluid;
- (b) a beneficial agent formulation in the space, said formulation comprising selenium;
(c) an expandable composition in the space for urging the beneficial agent formulation from the device;
(d) a layer of a composition comprising means for maintaining the identity of the beneficial agent formulation and the expandable composition in the space between the beneficial agent formulation and the expandable composition;
(e) a density member in the space comprising a density for maintaining the device in the environment of use; and
(f) exit means in the wall for dispensing the beneficial selenium to the environment of use over time.
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Abstract
A dispensing device is disclosed for delivering a beneficial agent. The device comprises (1) a housing defining an internal space, (2) heat responsive means containing a beneficial agent in the spece, (3) means for increasing the amount of beneficial agent delivered from the device in the space, (4) expandable means in the space, (5) an optional dense means in the space, and (6) means in the housing for delivering the beneficial agent from the dispensing device.
36 Citations
37 Claims
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1. A dispensing device for delivering a beneficial agent formulation to an environment of use, the dispensing device comprising
(a) a wall that defines an internal space, said wall comprising in at least a part a composition that permits the passage of fluid; -
(b) a beneficial agent formulation in the space, said formulation comprising selenium; (c) an expandable composition in the space for urging the beneficial agent formulation from the device; (d) a layer of a composition comprising means for maintaining the identity of the beneficial agent formulation and the expandable composition in the space between the beneficial agent formulation and the expandable composition; (e) a density member in the space comprising a density for maintaining the device in the environment of use; and (f) exit means in the wall for dispensing the beneficial selenium to the environment of use over time. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A dispensing device for delivering a beneficial agent formulation to an environment of use, the dispensing device comprising:
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(a) a wall that defines an internal space, said wall comprising in at least a part a composition that permits the passage of fluid; (b) a beneficial agent formulation in the space, said formulation comprising selenium; (c) an expandable composition in the space for urging the beneficial agent formulation from the device, said expandable composition comprising a carboxyvinyl polymer; (d) a layer of a composition comprising means for maintaining the identity of the beneficial agent formulation and the expandable composition in the space between the beneficial agent formulation and the expandable composition; (e) a density member in the space comprising a density for maintaining the device in the environment of use; and (f) exit means in the wall for dispensing the beneficial selenium to the environment of use over time. - View Dependent Claims (8, 9, 10, 11)
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12. A dispensing device for delivering a beneficial agent formulation to an environment of use the dispensing device comprising:
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(a) a wall that defines an internal space, said wall comprising in at least a part a composition that permits the passage of fluid; (b) a beneficial agent formulation in the space, said formulation comprising avermectin; (c) an expandable composition in the space for urging the beneficial agent formulation from the device; (d) a layer of a composition comprising means for maintaining the identity of the beneficial agent formulation and the expandable composition in the space between the beneficial agent formulation and the expandable composition; (e) a density member in the space comprising a density for maintaining the device in the environment of use; and (f) exit means in the wall for dispensing the beneficial avermectin to the environment of use over time. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A dispensing device for delivering a beneficial agent formulation to an environment of use, the dispensing device comprising:
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(a) a wall that defines an internal space, said wall comprising in at least a part a composition that permits the passage of fluid; (b) a beneficial agent formulation in the space, said formulation comprising avermectin; (c) an expandable composition in the space for urging the beneficial agent formulation from the device, said expandable composition comprising a carboxyvinyl polymer; (d) a layer of a composition comprising means for maintaining the identity of the beneficial agent formulation and the expandable composition in the space between the beneficial agent formulation and the expandable composition; (e) a density member in the space comprising a density for maintaining the device in the environment of use; and (f) exit means in the wall for dispensing the beneficial avermectin to the environment of use over time. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A dispensing device for delivering a beneficial agent to an environment of use, the dispensing device comprising:
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(a) a wall; (b) an internal lumen defined by the wall; (c) a beneficial agent formulation comprising a lasolocid in the lumen; (d) a composition in the lumen for pushing the beneficial agent formulation from the device; (e) a density member in the lumen comprising a density for maintaining the device in the environment of use; and
,(f) exit means in the device for dispensing the beneficial lasolocid to the environment of use over time. - View Dependent Claims (30, 31, 32)
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33. A dispensing device for delivering a beneficial agent to an environment of use, the dispensing device comprising:
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(a) a wall; (b) an internal lumen defined by the wall; (c) a beneficial agent comprising an ionophere in the lumen; (d) means in the lumen for pushing the beneficial ionophere from the device; (e) means for maintaining the identity of the beneficial ionophere and the means for pushing the ionophere from the device, said means for maintaining the identity in the lumen between the beneficial ionophere and the means for pushing; (f) a density member in the lumen for maintaining the device in the environment of use; and
,(g) exit means in the device for dispensing the beneficial ionophere to the environment of use over time. - View Dependent Claims (34, 35, 36, 37)
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Specification