摘要:
The subject of this invention is in the field of medicine, particularly surgery, and is intended for the treatment of benign tumors and angiomas. A hemangioma is an angioma, or tumor, formed by an anomalous proliferation of vascular endothelium, forming an undesirable mass, which can occur anywhere in the body. The resulting disease is known as hemangiomatosis. The method of this invention is comprised of a reduction of the arterial blood flow to the hemangioma which limits the blood circulation in the tumor mass, thus creating favorable conditions for subsequent ferromagnetic embolization from externally and selectively applied electromagnetic or ultrasound energy and sclerotization of the tumor tissue, preventing the spread of ferromagnetic particles through the vessels and into other organs and systems. At the same time, maintaining the blood flow, though reduced, prevents the development of a total necrosis due to acute impairment of the tumor's blood circulation, which significantly reduces the general toxic effect. The reduced blood stream still leaves the possibility of introducing medication into the tumor, which reduces the possibility of complications during the postembolization period.
摘要:
A method is provided wherein a suspension containing ferromagnetic particles is introduced into a body, and the particles are caused to move towards a tumor and are retained there by a magnetic field. The area of the tumor is exposed to an electromagnetic field to carry out hyperpyrexia of the tumor to a temperature sufficient to kill cancer cells. The contents of the tumor are removed. The condition of a patient's body is monitored during the treatment by determining activity of neutrophils and macrophages. An apparatus is also provided for carrying out the method and comprises an electromagnetic radiation source with emitters, temperature pickups, and a temperature setter connected to inputs of a comparator, a temperature control unit for controlling hyperpyrexia temperature connected to an output of the comparator and forming a signal fed to a control input of the source of radiation. The apparatus is also provided with a magnetic retainer for retaining ferromagnetic particles within the boundaries of a tumor, aa device for removing contents of a tumor, and a device for transferring ferromagnetic particles towards a tumor.
摘要:
A process of effecting necrosis of neoplasms in warm blooded animals as a result of hyperthermia of the neoplasm includes injecting particles into the warm blooded animals in proximity of the neoplasm. The particles are capable of exhibiting hysteresis heating when subjected to an alternating magnetic field. Further, the particles are of a size of at least two microns, or greater, so as to be incapable of being intracellularly absorbed within the cells of either the viable tissue of the animal or the neoplastic tissue. After interjecting the particles in association with the neoplasm, the area of the neoplasm is then subjected to an alternating magnetic field. This field is of a frequency greater than that sufficient to cause any appreciable neuromuscular response to the alternating magnetic field, and is less than that capable of causing any detrimental eddy current heating and/or dielectric heating of viable healthy tissue of the warm blooded animal. The neoplasm is maintained within the field for a time sufficient to heat the particles and the neoplasm, with which the particles are associated, to a temperature of at least 42.degree. C. to cause necrosing of the neoplasm.
摘要:
The process includes applying a localized static, magnetic or electric field to neurological or neuromuscular tissue to aid in the intracellular uptake and energy absorption of electric or magnetic dipoles present in the tissue and the cells. Before the applying step dipoles can be introduced in the tissues or cells. Also, after or during the applying step, an alternating, oscillating or pulsed electromagnetic field can be applied to the tissue to enhance the intracellular uptake of energy, and the energy absorption responsiveness in the tissue and/or the energy absorption of the dipoles in the tissue. The process can utilize a constant magnetic field through the interaction with the intracellular dipoles in the tissue. Further, an external electromagnetic field can be applied to the tissue to excite the particles and raise the energy level of the tissue to destroy the cells and modify their behavior to decrease the degenerative process. Additionally, particles can be introduced into the extracellular environment of the tissue to alter membrane events and potentiate energy delivery to the diseased inflammatory or reactive cells or reduce energy delivery to the normal cells.
摘要:
Induction heating can be utilized to cause necrosis of neoplasm as a result of hyperthermia by a process involving the injection of particles having hysteresis heating characteristics into tissue either within or in close proximity to the neoplasm and then subjecting these particles to an alternating magnetic field sufficient to cause hysteresis heating. The frequency of the field is preferably sufficiently low so as to minimize eddy current and dielectric heating. The particles used are preferably initially located within a biologically inert liquid carrier which will facilitate the insertion of the particles within the body and which will automatically become non-liquid within the body so as to hold the particles in place. The actual heating is preferably carried out by positioning either the entire patient or the affected portion of the patient's body through a series of axially aligned, parallel, liquid cooled coils. Only one of these coils is connected to a power supply.
摘要:
Systems and methods for magnetic targeting of therapeutic particles are provided. Therapeutic particles comprise one or more magnetic or magnetizable materials and at least one therapeutic agent. Therapeutic particles are specifically targeted using uniform magnetic fields capable of magnetizing magnetizable materials, and can be targeted to particular locations in the body, or can be targeted for capture, containment, and removal. Therapeutic particles can comprise antioxidant enzymes, and can be targeted to cells to protect the cells from oxidative damage.
摘要:
Methods and formulations for induction of local anesthetic effects employing magnetic nanoparticles conjugated to anesthetic molecules. Magnetic nanoparticle-local anesthetic conjugates may be safely injected intravenously into human and animal subjects without encountering the deleterious effects observed with traditional injections of local anesthetics. The magnetic nanoparticle-local anesthetic conjugate may be concentrated at a site of action through the application of an external magnetic field to the patient at a site where local anesthesia is desired.
摘要:
The present invention discloses a magnetically-controllable nanometric porous drug carrier, wherein an organic or inorganic matrix is used to carry the drug, and wherein magnetic nanoparticles having magnetosensitivity are used to encapsulate the surface of the matrix and seal the drug inside the matrix. An external magnetic field is used to control the removal rate of the magnetic nanoparticles and control the behavior and rate of drug release.
摘要:
The invention provides magnetic nanoparticles comprising a core, wherein the nanoparticles comprise at least one therapeutic agent linked to the core via a hydrazone linkage or via an oxime ether linkage, methods for making said nanoparticles, and methods for using said nanoparticles.
摘要:
It is intended to provide a drug delivery system which makes it possible to solve the existing technical problems and is easily usable in practice. A drug, which comprises an organic compound or an inorganic compound and has been magnetized by modifying a side chain and/or crosslinking side chains, is induced by a magnetic force into target tissues or an affected part.