摘要:
Embodiments of the present invention regard the delivery of therapeutic. One such apparatus may comprise multiple, independently-activated, injection devices for the delivery of therapeutic or other substances. This apparatus may include a first catheter; a second catheter in the first catheter and a multiple delivery member injection device. This multiple delivery member may include an expandable member and a plurality of injection elements. A third catheter may be positioned in the second catheter. This third catheter may have a distal end connected to a wall of the expandable member and a plurality of filling tubes connected to an distal end of the third catheter. In some of the embodiments each of the injection elements may hold a pressurized therapeutic prior to release of the therapeutic.
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:
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:
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 provides a method comprising administering cells by infusion through a blood vessel and administering a vasodilator, a vascular enhancer, or both. In accordance with one embodiment, the delivery of stem cells to the myocardium by intracoronary infusion is improved by administration of one or more vasodilators and/or vascular permeability enhancers prior to or at the time of cell therapy.
摘要:
Embodiments of the present invention regard the delivery of therapeutic. One such apparatus may comprise multiple, independently-activated, injection devices for the delivery of therapeutic or other substances. This apparatus may include a first catheter; a second catheter in the first catheter and a multiple delivery member injection device. This multiple delivery member may include an expandable member and a plurality of injection elements. A third catheter may be positioned in the second catheter. This third catheter may have a distal end connected to a wall of the expandable member and a plurality of filling tubes connected to an distal end of the third catheter. In some of the embodiments each of the injection elements may hold a pressurized therapeutic prior to release of the therapeutic.
摘要:
Methods and apparatus for coating at least a portion of the surface of medical devices using an injection coating device are disclosed. In one embodiment, the invention includes a coating method wherein an orifice of the injection coating device is placed adjacent a vertically positioned medical device, coating material is ejected from the orifice onto the medical device, and the coating material gravitationally flows downward coating the medical device. In another embodiment, an orifice of an injection coating device is positioned adjacent a horizontally positioned medical device to gravitationally flow and deposit coating material onto the medical device. These methods may be used to apply one or more coating materials, simultaneously or in sequence. In another embodiment, multiple injection coating devices may be utilized. In certain embodiments of the invention, the coating materials include therapeutic or biologically active agents.
摘要:
The invention is directed to an apparatus, such as a medical device, having a surface coated or covered with a decellularized extracellular matrix or having a component comprising the decellularized extracellular matrix for implantation into a subject, preferably a human. In one embodiment of the invention, a decellularized extracellular matrix is used to form a bodily implant such as a vein, an artery, an esophagus, or a ventricular restraining device. In some embodiments of the invention, the decellularized extracellular matrix is configured to be a time released therapeutic. In another embodiment of the invention, a decellularized extracellular matrix forms an aneurysm treatment device, such as an aneurysm coil, a seal, a pouch, or a filler. In a further embodiment of the invention, decellularized extracellular matrix is used to embolize lesions, tumors, or vessels. 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 body tissues are also provided.
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:
Devices and methods of delivering therapeutic agents to tissue are provided, which provide reduced outflow of therapeutic agents from an injection site. The methods include delivering one or more clot-promoting substances, such as platelets, fibrin and/or thrombin, to the injection site to entrap the therapeutic agent in the injection site. Devices include devices that are suitable for use in the provided methods.