Methods of making intra-vaginal devices and/or intra-vaginal devices
First Claim
1. An intravaginal device for the sustained release of a physiologically active substance into the vagina of a mammal when inserted therein, including a resilient physiologically-inactive supporting skeleton and a polymeric coating having a physiologically-active ingredient incorporated therein moulded over said skeleton to form a physiologically-active skin thereupon, said physiologically active ingredient and said skin affording a sustained release of said physiologically-active ingredient during contact with the body fluids of said mammal, and said skeleton including means for increasing the surface area of the physiologically-active skin exposed to said body fluids comprising at least three broad lobes radiating in a plane from a central body portion, each of which lobes is perforated with a network of holes over which the skin is moulded to provide an undulated skin surface over said skeleton and increase the skin surface area exposed to body fluids.
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Accused Products
Abstract
An intra-vaginal device for supplying minerals, hormones or medicoments to an animal is formed as an injection moulded polymeric body having a skin in which adjacent at least part of the surface thereof at least one active ingredient is incorporated. The body is preferably separately moulded before the skin is applied and the skin is preferably of a two part silicone rubber or a polymer such as ethylene vinyl acetate or a polymer substance and the active ingredient is selected from one or more of progesterone oestrogen testosterone, mineral trace elements such as selenium cobalt copper and boron and anthelmintics.
97 Citations
15 Claims
- 1. An intravaginal device for the sustained release of a physiologically active substance into the vagina of a mammal when inserted therein, including a resilient physiologically-inactive supporting skeleton and a polymeric coating having a physiologically-active ingredient incorporated therein moulded over said skeleton to form a physiologically-active skin thereupon, said physiologically active ingredient and said skin affording a sustained release of said physiologically-active ingredient during contact with the body fluids of said mammal, and said skeleton including means for increasing the surface area of the physiologically-active skin exposed to said body fluids comprising at least three broad lobes radiating in a plane from a central body portion, each of which lobes is perforated with a network of holes over which the skin is moulded to provide an undulated skin surface over said skeleton and increase the skin surface area exposed to body fluids.
Specification