摘要:
A therapeutic delivery device is provided wherein a delivery body is supported by an elongate member such that the body may rotate as it delivers therapeutic to a target site. Therapeutic may be delivered by deploying delivery heads into a target site as well as by dispensing therapeutic from the delivery head. The delivery body may be cylindrically shaped, spherically shaped or shaped in various other configurations. In one embodiment the delivery body contains tracks that may roll back and forth over a target site to dispense therapeutic. In another embodiment, the delivery heads of the delivery body have internal valves that open and close in order to dispense therapeutic.
摘要:
A medical device for: delivering a therapeutic agent to a body lumen is described. The device may generally be a stent with an inner sidewall surface and an outer sidewall surface, with a plurality of struts having a plurality of openings therein. An inner and outer layer may be applied to the stent, forming pockets within at least a portion of the openings. The pockets may be filled with at least one therapeutic agent. The pockets may take a variety of shapes and sizes, and may be designed for release or rupture in variety of ways.
摘要:
The present invention provides a catheter and catheter assembly for delivering micronized therapeutic agents to a target site in the body and, in particular, to a target site in the heart. The micronized therapeutic agents are delivered in aerosol form or dry powder form. The present invention also provides a method of delivering micronized therapeutic agents to a target site in the body by placing the therapeutic agents in a catheter, positioning the catheter in the target site, and exposing the therapeutic agents to an energizing mechanism sufficient to create supersonic flow to carry the therapeutic agents from a stationary state in the catheter to a mobile state towards the target site.
摘要:
The present invention relates to implantable medical devices and methods that employ these medical devices to treat heart valves. In one embodiment, a medical device is provided comprising a body. The body may have a portion thereof including therapeutic agent and can be configured to support the device proximate a heart valve. Methods in accordance with embodiments of the present invention may also include providing a medical device having a body with at least a portion thereof including a therapeutic agent. These methods may also include positioning the medical device in a location proximate to a downstream surface of the heart valve and securing the device. The therapeutic agent released may then be delivered to the heart valve.
摘要:
A catheter having a drug delivery unit at the distal end thereof. The drug delivery unit includes an actuator capable of assuming an activated and an inactivated configuration. The drug delivery unit also includes a receptacle capable of accepting a therapeutic agent. The actuator and receptacle are in communication with each other such that the actuator transmits force to the receptacle and the receptacle accepts force from the actuator in an activated configuration of the actuator. Also provided is a method of delivering a therapeutic agent to a target site using the catheter of the present invention.
摘要:
The present invention relates generally to decellularized extracellular matrix of conditioned body tissues. The decellularized extracellular matrix contains a biological material, preferably vascular endothelial growth factor (VEGF), produced by the conditioned body tissue that is in an amount different than the amount of the biological material that the body tissue would produce absent the conditioning. The invention also relates to methods of making and methods of using said decellularized extracellular matrix. Specifically, the invention relates to treating defective, diseased, damaged or ischemic cells, tissues or organs in a subject by administering, injecting or implanting the decellularized extracellular matrix of the invention into a subject in need thereof. The invention is further directed to a tissue regeneration scaffold for implantation into a subject inflicted with a disease or condition that requires tissue or organ repair, regeneration and/or strengthening. Additionally, the invention is directed to a medical device, preferably a stent or an artificial heart, having a surface coated or covered with the decellularized extracellular matrix of the invention or having a component comprising the decellularized extracellular matrix of the invention for implantation into a subject, preferably a human. Methods for making the tissue regeneration scaffold and methods for manufacturing a coated or covered medical device having a component comprising decellularized extracellular matrix of conditioned body tissues are also provided.
摘要:
The present invention provides a catheter and catheter assembly for delivering micronized therapeutic agents to a target site in the body and, in particular, to a target site in the heart. The micronized therapeutic agents are delivered in aerosol form or dry powder form. The present invention also provides a method of delivering micronized therapeutic agents to a target site in the body by placing the therapeutic agents in a catheter, positioning the catheter in the target site, and exposing the therapeutic agents to an energizing mechanism sufficient to create supersonic flow to carry the therapeutic agents from a stationary state in the catheter to a mobile state towards the target site.
摘要:
This invention comprises an apparatus for treating an atherosclerotic plaque in a coronary artery of a mammal by placing at or proximate to an entrance to the coronary artery and upstream of the vulnerable plaque, and an effective amount of a therapeutic agent for the treatment of the plaque. This invention comprises delivering a deposition of a therapeutic drug high in the coronary arterial tree for treatment of downstream vulnerable plaques. The invention also comprises slow release formulation and delivery of an apparatus that is totally degradable or removed and/or replaced.
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:
An improved method and apparatus for high-volume production of coated stents with highly uniform stent coatings using a roll coating technique is provided. In a first embodiment, uncoated stents are placed onto rotating stent holders with automated stent handling equipment. The holders are mounted on an endless conveyer belt which advances the stents toward a stent coater. As the stents advance through the coater, the holders rotate, thereby rolling the stents about their longitudinal axes as coating material is sprayed toward them, ensuring the stents are uniformly coated on their exterior and interior surfaces. After the conveyer turns to carry the coated stents back toward the loading area, the rotating stents pass again through the coating spray, downstream of the initial coating location, thereby increasing the efficient utilization of the coating material. The conveyer then advances the coated stents to an unloading area for removal before the holders return to the stent loading area to receive new stents.