摘要:
Devices and methods are provided for the controlled release or exposure of reservoir contents. The device includes a substrate, a plurality of reservoirs in the substrate, reservoir contents disposed in the reservoirs, discrete reservoir caps covering each reservoir to seal the reservoir contents in the reservoirs, and control circuitry for selectively disintegrating the reservoir caps to release or expose the reservoir contents in vivo. At least one of the reservoir caps comprises a first electrically conductive layer coated with one or more protective layers. In one embodiment, the control circuitry comprises an electrical input lead and an electrical output lead connected to and directly contacting each of said reservoir caps and a source of electric power for applying an electrical current through each reservoir cap in an amount effective to rupture each of the reservoir caps.
摘要:
Devices and methods are provided for the controlled release or exposure of reservoir contents. The device includes a substrate, a plurality of reservoirs in the substrate, reservoir contents disposed in the reservoirs, discrete reservoir caps covering each reservoir to seal the reservoir contents in the reservoirs, and control circuitry for selectively disintegrating the reservoir caps to release or expose the reservoir contents in vivo. At least one of the reservoir caps comprises a first electrically conductive layer coated with one or more protective layers. In one embodiment, the control circuitry comprises an electrical input lead and an electrical output lead connected to and directly contacting each of said reservoir caps and a source of electric power for applying an electrical current through each reservoir cap in an amount effective to rupture each of the reservoir caps.
摘要:
Devices and methods for the controlled release or exposure of reservoir contents, and methods of manufacture thereof, are provided. The device includes a reservoir cap formed of an electrically conductive material, which prevents the reservoir contents from passing out from the device and prevents exposure of the reservoir contents to molecules outside of the device; an electrical input lead connected to said reservoir cap; and an electrical output lead connected to said reservoir cap, such that upon application of an electrical current through the reservoir cap, via the input lead and output lead, the reservoir cap ruptures to release or expose the reservoir contents. The reservoir contents can comprise a release system containing drug molecules for release or can comprise a secondary device, such as a sensor. The controlled release system may be incorporated into an implantable drug delivery or biosensing device.
摘要:
Devices and methods are provided for the controlled release or exposure of reservoir contents. The device includes a reservoir cap formed of an electrically conductive material, which prevents the reservoir contents from passing out from the device and prevents exposure of the reservoir contents to molecules outside of the device; an electrical input lead connected to said reservoir cap; and an electrical output lead connected to said reservoir cap, such that upon application of an electrical current through the reservoir cap, via the input lead and output lead, the reservoir cap ruptures to release or expose the reservoir contents. The reservoir contents can comprise a release system containing drug molecules for release or can comprise a secondary device, such as a sensor. In one embodiment, the controlled release system is incorporated into an implantable drug delivery device.
摘要:
Devices and methods are provided for the controlled release or exposure of reservoir contents. The device includes a reservoir cap formed of an electrically conductive material, which prevents the reservoir contents from passing out from the device and prevents exposure of the reservoir contents to molecules outside of the device; an electrical input lead connected to said reservoir cap; and an electrical output lead connected to said reservoir cap, such that upon application of an electrical current through the reservoir cap, via the input lead and output lead, the reservoir cap ruptures to release or expose the reservoir contents. The reservoir contents can comprise a release system containing drug molecules for release or can comprise a secondary device, such as a sensor. In one embodiment, the controlled release system is incorporated into an implantable drug delivery device.
摘要:
Devices are provided for the controlled exposure or release of contents stored in hermetically sealed reservoirs. The devices comprise a primary substrate having a front side and a back side, and including one or more hermetic sealing materials; a plurality of reservoirs in the primary substrate positioned between the front side and the back side; reservoir contents, which comprise chemical molecules (such as drugs) or a secondary device (such as a glucose sensor), located inside the reservoirs; a hermetic sealing substrate having a surface composed of one or more hermetic sealing materials; and a hermetic seal formed between and joining the primary substrate and the hermetic sealing substrate, wherein the hermetic seal independently seals the reservoirs.
摘要:
Methods are provided for hermetically sealing the reservoirs of microchip devices and for hermetically sealing the substrate assemblies in a hermetic packaging structure. In one embodiment, the method comprises (1) providing a primary substrate having a front side and a back side, the substrate comprising a plurality of reservoirs positioned between the front side and the back side, each reservoir being loaded with molecules or a secondary device for controlled release or exposure, the reservoirs having at least one opening in need of sealing, the primary substrate including one or more hermetic sealing materials; (2) providing a hermetic sealing substrate having a surface composed of one or more hermetic sealing materials; (3) positioning the hermetic sealing substrate over the reservoir openings and contacting said hermetic sealing materials of the primary substrate with said hermetic sealing materials of the hermetic sealing substrate; and (4) applying energy or a mechanical force to the contacted sealing materials effective to form a hermetic seal between the hermetic sealing substrate and the primary substrate to hermetically seal the reservoir openings.
摘要:
Method and devices are provided for extended and controlled delivery of parathyroid hormone to a patient. The method includes implanting a medical device into the patient, the medical device comprising a substrate, a plurality of reservoirs in the substrate, a release system contained in each of the reservoirs, wherein the release system comprises parathyroid hormone; and controllably releasing a pharmaceutically effective amount of the parathyroid hormone from the reservoirs. The parathyroid hormone can be released intermittently, such as once daily over an extended period (e.g., two months, ten months, or more.). The device can further include reservoirs containing a bone resorption inhibitor or other drug for release. The devices are useful in delivering PTH for the treatment and prevention of bone loss, such as associated with osteoporosis.
摘要:
Method and devices are provided for extended and controlled delivery of parathyroid hormone to a patient. The method includes implanting a medical device into the patient, the medical device comprising a substrate, a plurality of reservoirs in the substrate, a release system contained in each of the reservoirs, wherein the release system comprises parathyroid hormone; and controllably releasing a pharmaceutically effective amount of the parathyroid hormone from the reservoirs. The parathyroid hormone can be released intermittently, such as once daily over an extended period (e.g., two months, ten months, or more.). The device can further include reservoirs containing a bone resorption inhibitor or other drug for release. The devices are useful in delivering PTH for the treatment and prevention of bone loss, such as associated with osteoporosis.
摘要:
Devices and methods for the controlled release or exposure of reservoir contents, and methods of manufacture thereof, are provided. The device includes a reservoir cap formed of an electrically conductive material, which prevents the reservoir contents from passing out from the device and prevents exposure of the reservoir contents to molecules outside of the device; an electrical input lead connected to said reservoir cap; and an electrical output lead connected to said reservoir cap, such that upon application of an electrical current through the reservoir cap, via the input lead and output lead, the reservoir cap ruptures to release or expose the reservoir contents. The reservoir contents can comprise a release system containing drug molecules for release or can comprise a secondary device, such as a sensor. The controlled release system may be incorporated into an implantable drug delivery or biosensing device.