摘要:
Delivery systems for in situ forming foam formulations are provided. The devices may include various actuation mechanisms and may entrain air into fluid formulation components in a variety of ways, including mixing with air and the addition of compressed gas.
摘要:
Medical implants and methods useful in treating postoperative pain are described. The implants comprise one or more electrospun drug-loaded fibers, which fibers comprise a drug useful in the treatment of pain. The implants are implanted at sites of interest including joint capsules, bones, and subcutaneous spaces, and are secured with tissue flaps or fasteners.
摘要:
Systems and methods related to polymer foams are generally described. Some embodiments relate to compositions and methods for the preparation of polymer foams, and methods for using the polymer foams. The polymer foams can be applied to a body cavity and placed in contact with, for example, tissue, injured tissue, internal organs, etc. In some embodiments, the polymer foams can be formed within a body cavity (i.e., in situ foam formation). In addition, the foamed polymers may be capable of exerting a pressure on an internal surface of a body cavity and preventing or limiting movement of a bodily fluid (e.g., blood, etc.).
摘要:
Disclosed are fiber composite structures comprising a matrix material and at least one polymeric fiber in contact with the matrix material. The fiber(s) are preferably characterized by a diameter of up to about 20 microns. In certain embodiments, the fiber(s) comprise a therapeutic agent in an amount that exceeds the solubility limit of the therapeutic agent in the fiber polymer. In some embodiments, the fiber(s) comprise an inner radial portion and an outer radial portion.
摘要:
A system and method for simply and reliably determining the location and orientation of a medical device within a patient's body. A medical device, such as a catheter, has bending indicators on or imbedded in its wall, and passes through an anatomical reference of known orientation relative to a target site within the patient. Information from the tube bending indicators permits determination of the orientation of a feature, such as an orifice, at the distal end of the medical device relative to the anatomical reference. From the known orientation of the anatomical reference, and information on the location and orientation of the distal end of the medical device obtained from fluoroscopic imaging from a single direction, the physician may reliably determine the orientation of the distal feature relative to the target site, eliminating the need for imaging from multiple directions.
摘要:
This invention provides methods of increasing blood flow to tissue in a subject in need thereof, methods of regenerating tissue in a subject, methods of treating diseased tissue in a subject, methods of forming new blood vessels in tissue and new tissue, such as myocardial tissue, in a subject in need thereof, methods of increasing angiogenesis in diseased tissue in a subject, and methods of preventing heart failure in a subject, which methods comprise: a) isolating autologous mononuclear cells from the subject; b) selecting from the isolated autologous mononuclear cells of step (a) lineage negative (Lin−) mononuclear cells; and c) transplanting locally into or adjacent to the tissue an effective amount of the Lin− autologous mononuclear cells, resulting in formation of new blood vessels in the tissue and formation of new tissue. Additional methods provided for such uses further select from the isolated autologous mononuclear cells of step (a) lineage negative (Lin−) mononuclear cells a subset of Lin− mononuclear side population (SP) cells and transplant locally into or adjacent to the tissue an effective amount of the Lin− SP cells. In other aspects, methods using tissue other than mononuclear cells for these uses are provided, which comprise (a) obtaining a cell suspension from the tissue or a second tissue of the subject; (b) selecting from the cell suspension step (a) side population (SP) cells; and (c) transplanting locally into or adjacent to the tissue an effective amount of the SP cells, resulting in formation of new blood vessels in the tissue and formation of new tissue.
摘要:
Catheter devices having an expandable balloon for delivering a therapeutic agent to a body site. The balloon has one or more folds which serve as a reservoir for containing the therapeutic agent. The fold may have any of various configurations to hold the therapeutic agent. In some cases, the balloon comprises one or more lobes that forms the fold(s). The therapeutic agent may be provided in various ways. For example, the therapeutic agent may be contained in packets that rupture upon expansion of the balloon, or as a plurality of discrete bulk masses, or sealed within compartments.
摘要:
A method for modulating remodeling of an infarct region of a myocardium, the method including the controlled local delivery of therapeutic agent(s) employing microparticles as a carrier, and devices and compositions relating thereto.
摘要:
The invention is directed to compositions comprising decellularized bone marrow extracellular matrix and uses thereof. Methods for repairing or regenerating defective, diseased, damaged or ischemic tissues or organs in a subject, preferably a human, using the decellularized bone marrow extracellular matrix of the invention are also provided. The invention is further directed to a medical device, preferably a stent or an artificial heart, and biocompatible materials, preferably a tissue regeneration scaffold, comprising decellularized bone marrow extracellular matrix for implantation into a subject.
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.