摘要:
An orifice-free drug delivery device is provided. In an embodiment, the device includes a body having at least one water-permeable wall bounding a reservoir defined within the body. A drug formulation is disposed within the reservoir. The body has an elastic portion and at least one restraining plug closing off an opening of the body. The opening is in fluid communication with the reservoir, and the restraining plug contacts the elastic portion of the body and controls release of the drug from the device by the transient formation of one or more microchannels between the elastic portion of the body and the at least one restraining plug. The elastic portion may define an opening having an inner diameter, which is exceeded by the outer diameter of the restraining plug by at least 3%.
摘要:
Urodynamic assessment systems, intravesical devices, and methods of their use are provided. In one embodiment, an intravesical device includes an elastic body including an elongated tube defining a reservoir lumen, and a sensor disposed at least partially in the reservoir lumen and configured to measure or detect one or more parameters. The intravesical device is deformable between a deployment shape for passage of the intravesical device through the urethra into the bladder and a retention shape for preventing voiding of the intravesical device through the urethra.
摘要:
Drug delivery devices are provided in which much of a drug payload within the device remains within an area proximal to a wall of the device through which the drug must pass for release of the drug from the device into a patient. In one case, the device may include a drug reservoir portion which has a drug reservoir lumen bounded by a reservoir wall having an inner surface; a drug located in the drug reservoir lumen; and a core region which does not comprise the drug, wherein the drug is disposed between the inner surface of the reservoir wall and the core region. The device may be elastically deformable between a first shape suited for insertion through a lumen into a body cavity of the patient and a second shape suited to retain the device within the body cavity.
摘要:
Urodynamic assessment systems, intravesical devices, and methods of their use are provided. In one embodiment, an intravesical device (200) includes an elastic body including an elongated tube defining a reservoir lumen (208), and a sensor (254) disposed at least partially in the reservoir lumen and configured to measure or detect one or more parameters. The intravesical device Cis deformable between a deployment shape for passage of the intravesical device through the urethra into the bladder and a retention shape for preventing voiding of the intravesical device through the urethra.
摘要:
Intravesical drug delivery devices are provided which may include an elongated body formed of a matrix system of a drug dispersed in a silicone, wherein the elongated body has a first end, an opposed second end, and an intermediate portion between the first and second ends, and wherein the silicone of the matrix system is cured to bias the elongated body in a coiled retention shape, such that the device is elastically deformable between a relatively straightened shape suited for insertion of the device through a urethra and into the urinary bladder of a patient and the coiled retention shape which is suited to retain the device within the urinary bladder.
摘要:
A drug delivery device is provided. In an embodiment, the device includes a device body having an elongated drug reservoir lumen, a drug positioned in the drug reservoir lumen, and at least one end plug positioned at an end of the device body, for example inserted in an end of the drug reservoir lumen. The end plug may include an aperture therethough, and the drug delivery device may be configured to release the drug from the drug reservoir lumen through the aperture.
摘要:
Abstract of the Disclosure Drug delivery devices are provided in which much of a drug payload within the device remains within an area proximal to a wall of the device through which the drug must pass for release of the drug from the device into a patient. In one case, the device may include a drug reservoir portion which has a drug reservoir lumen bounded by a reservoir wall having an inner surface; a drug located in the drug reservoir lumen; and a core region which does not comprise the drug, wherein the drug is disposed between the inner surface of the reservoir wall and the core region. The device may be elastically deformable between a first shape suited for insertion through a lumen into a body cavity of the patient and a second shape suited to retain the device within the body cavity.
摘要:
Medical devices, kits, and methods are provided for delivering a fluid containing a drug to a patient. Devices (102, 402, 702) include a housing (104, 404, 704) defining a lumen and an osmotically-driven piston (420) moveable within the lumen. The housing may be elastically deformable between a first shape suitable for insertion through a patient's urethra and a second shape suitable for retention of the device in the patient's bladder.
摘要:
Abstract of the Disclosure Implantable drug delivery devices include a housing defining a reservoir, a first unit within the reservoir, and a second unit within the reservoir. The first unit contains a drug and the second unit contains a functional agent that facilitates release of the drug. Intravesical drug delivery devices include a housing portion containing a drug formulation and a housing portion containing an excipient, and are configured to release the drug according to a first release profile and the excipient according to a second release profile. Methods include inserting any of these devices into a patient and releasing drug from the device.