摘要:
The invention provides devices that can be used to deliver a therapeutic agent to a treatment site within the vessel of a patient at increased pressure, while limiting the contact with and pressure placed on the vessel walls. Devices according to the invention include an expandable structure arranged around and on a tube having a lumen. The expandable structure may include a sealing ring that makes contact with the interior surface of a vessel to prevent or decrease fluid flow during delivery of a therapeutic agent. This allows delivery of a therapeutic agent with decreased risk of injury to the treatment site. The invention also provides for large lumen diameters, preventing shearing stress on therapeutic agents such as cell slurries.
摘要:
A therapeutic delivery catheter system method or kit for delivery of therapeutic to a target location is provided. In various embodiments of the present invention the invention may include a catheter with a therapeutic delivery lumen and a therapeutic delivery orifice. The lumen and the orifice may be in fluid communication with each other and may be configured such that therapeutic delivered therethrough may be done at pressures mimicking pressures existing or otherwise normal at the target locations receiving the therapeutic. In some embodiments the catheter may be part of a kit that may include instructions regarding the proper manner of operation of the catheter. These instructions may include suggested target pressures for therapeutic delivery as well as delivery times, and suggested lengths of time for the device to reside at the target area after delivery to allow for proper uptake of the therapeutic.
摘要:
Delivery devices with pressure control mechanisms are described herein. In some embodiments an apparatus includes a reservoir configured to contain a fluid, the reservoir having an inlet port and an outlet port. A plunger is disposed within the reservoir such that the reservoir is divided into a first portion and a second portion. The inlet port is in fluid communication with the first portion of the reservoir, and the outlet port is in fluid communication with the second portion of the reservoir. A pressure control device configured to control a pressure of the fluid within the first portion of the reservoir is in fluid communication with the first portion of the reservoir.
摘要:
Delivery catheters for in situ forming foams are provided. The catheters include, in various embodiments, coatings, valves, mixing structures, exit ports and combinations of the same.
摘要:
A medical device includes a carrier and an agent. The agent is formulated to control inflammation of biological tissue, such as heart tissue, and is releasably coupled to the carrier. The carrier is configured to be disposed in operative proximity to the biological tissue to be treated by the agent. In one embodiment, the carrier is configured to release the agent or otherwise deliver the agent to the biological tissue, thus controlling inflammation of the tissue. Also, a method to improve healing of biological tissue includes placing a medical device proximate to the heart of a patient, where the medical device has a carrier and an agent configured to control inflammation, the agent is releasably coupled to the carrier. In one embodiment, the method includes causing the agent to be released from the carrier.
摘要:
The present disclosure provides an intrathecally-implantable depot having a biodegradable core for extended release of pain-relieving drug into the intrathecal space over at time period of at least a month. The present disclosure further provides methods for preparing a self-contained intrathecally-implantable depot and methods for continuously relieving pain in a subject by implanting an intrathecally-implantable depot having a biodegradable core and releasing a therapeutically-effective amount of analgesic composition from the biodegrading core over a time period of at least one month.