31 results about "Blood supplying" patented technology

A device implantable in an artery at a bifurcation into a first branch supplying blood to a vital region having a high sensitivity to emboli in the blood, and a second branch supplying blood to a less vital region having a lower sensitivity to emboli in the blood. The implantable device is initially of a small diameter for facilitating its introduction into and deployment through the artery to the bifurcation, and is expandable to a larger diameter for implantation in the artery at the bifurcation. The implantable device includes a base element for anchoring in the artery at the bifurcation; and a deflector element for covering the inlet of the first branch at the bifurcation. The deflector element is formed with openings of a size and configuration to deflect emboli in the blood to the second branch without blocking blood flow through the second branch or through the first branch. The base element is a coil of tubular configuration having overlapping ends enabling it to be expanded from the initial diameter to the larger diameter. In the described preferred embodiments, the device is configured and dimensioned for implantation in the CCA at its bifurcation into the ICA and ECA.

A method is disclosed for disrupting capillary blood flow and trapping materials such as chemotherapeutic agents in undesirable tissue, including cells of a cancerous or non-cancerous tumor. The method involves the placement of electrodes into or near the vicinity of capillary vessels supplying blood to capillaries in the undesirable tissue, and application of electrical pulses causing capillary blood flow disruption. In some cases, the electric pulses irreversibly permeate the cell membranes, thereby invoking cell death. The irreversibly permeabilized cells are left in situ and are removed by the body's immune system. The process may further comprise monitoring blood flow and/or infusion of a material such as a chemotherapeutic agent or marker into the blood.

The present invention provides the use and composition of matter of angiogenic or other growth/cytokine factors expressed by mixtures of allogeneic human cell strains or lines of various types and stages of differentiation. Also provided are unencapsulated preparations (mixed with or applied to extracellular matrix material or synthetic biocompatible substances) for the purpose of temporary application to wounds or defects in the skin or other tissues for the restoration of blood supplying connective tissue to enable organ-specific cells to reestablish organ integrity as well as to inhibit excessive scar formation.

The present invention, which addresses the needs described above, resides in an apparatus and method for coupling vascular apertures to a blood supply vessel in a manner that minimizes the time and operator dependent inconsistency in performing vascular anastomoses. In the coronary setting, this concept is fast and can be applied to both conventional and minimally invasive operative techniques. In the preferred embodiment, the present invention relates to an apparatus and method for facilitating end-to-side vascular anastomoses procedure, whereby the present invention acts as a coupling apparatus between a first, blood supplying hollow organ, e.g. the LIMA, radial artery, or a saphenous vein and the side wall of second hollow organ, typically one of the major coronary arteries, such as the left coronary artery (LCA), right coronary artery (RCA) or the circumflex (CX).

The invention relates to a liver image segregation method based on hierarchy vessel tree division. The method comprises the steps that firstly, a directed tree is utilized to represent a topological structure of a liver portal vein vessel, then according to space distribution and branch average radius information of the liver portal vein vessel in a specific clinical case image, vessel hierarchical parameters are determined and a hierarchical vessel tree is created, a second-level subtree set providing blood for a liver is marked, marked second-level subtrees are divided into eight kinds according to blood supplying areas, the liver is divided into eight hepatic segments through the adoption of the shortest distance algorithm to be analyzed, and clinical interesting information is extracted. According to the method, for liver vessels with multiple branches and complex structures, good hieratical effects can be obtained, blood supplying effects of most second-level branches are considered, and hepatic segment distribution and attribute information obtained through segregation also accord with the Couinaud hepatic segmentation theory.

The invention provides a free skin flap in-vitro distal blood supplying device, and relates to the field of mechanical instruments. The free skin flap in-vitro distal blood supplying device comprises an artery blood supplying unit, a vein blood returning unit, a precise peristaltic pump, a blood anti-freezing device and a temperature control system, wherein the artery blood supplying unit comprises an artery puncture needle, a blood delivery catheter, a flow adjuster, a three-way pipe, a skin flap artery anastomosis needle and an elastic sleeve; the vein blood returning unit comprises a vein puncture needle, a blood delivery catheter, a catheter joint, a three-way pipe, a peristaltic pump pipe, a skin flap vein anastomosis needle and an elastic sleeve; the temperature control system comprises a circulating water pump, a water delivery catheter, a heating catheter and a constant-temperature water tank; the peristaltic pump is precise and is suitable for pumping liquid with medium and small flow; the blood anti-freezing device is a precise injection pump filled with anticoagulant normal saline; and anticoagulant is injected into the artery blood supplying device through a catheter. The free skin flap in-vitro distal blood supplying device is used for distally and continuously supplying blood for free skin flaps circularly in a free skin flap surgery; and the problem that good blood supplying vessels do not exist surrounding a skin flap area is solved.

The invention relates to the field of medical treatment, in particular to a far infrared magnet therapy paster for treating the tumor. The far infrared magnet therapy paster comprises medical adhesive tape, a far infrared magnet therapy layer, a protection layer and the like, and has different magnetic field intensities, different shapes and different specifications and models. The far infrared magnet therapy paster has the functions of restraining tumor tissue blood supplying and metabolism, changing cancer cell forms, inducing tumor cell apoptosis, restraining tumor growth, enabling the tumor to gradually become smaller, eliminating the inflammation of the vascular wall, reducing pain signal transmission, controlling middle and late period cancer diffusion and pains, improving local microcirculation and immunity and not hurting the benign adjustment of the normal cells. When the far infrared magnet therapy paster is used, the specifications and models are selected according to the ages, the states of illness and the nidus positions, the protection layer is uncovered, the far infrared magnet therapy layer of the paster tightly adheres to the channel and collateral skin in the nidus area and the related shu-acupoint or Shenque acupoint, a plurality of pasters can be used at different positions at the same time, and the paster is replaced every one to two days.

The invention relates to an axillary artery cannula for achieving no perfusion ischemic areas during extracorporeal circulation period and application thereof. The axillary artery cannula comprises a cannula body with a blood supplying end, and is characterized by also comprising a proximal artery tube and a distal artery tube which communicate with the cannula body and play roles in shunting and sharing pressure, thus forming an extracorporeal circulation plastic perfusion tube of which the whole structure is T-shaped or Y-shaped, wherein an included angle is reserved between the proximal artery tube of the perfusion tube with Y-shaped structure and the cannula body of the blood supplying end to distribute and adjust blood flow volume of perfusion. The axillary artery cannula is applied to a right axillary artery to achieve systemic arterial perfusion during the extracorporeal circulation period and selective cerebral perfusion during deep hypothermic circulatory arrest, and meanwhile can avoid right upper limb ischemia. Obviously, the axillary artery cannula can meet systemic arterial perfusion during the extracorporeal circulation period and cerebral perfusion during circulatory arrest, can distribute and adjust perfusion blood flow, and achieves no perfusion ischemic areas; and the axillary artery cannula is simple and convenient to operate, easy and reliable to fix, not prone to rising perfusion pressure and causing blood leakage, less in blood damage, greatly shortened in operation time and reduced in right upper limb ischemic time.

The invention relates to a vaneless blood pump. The vaneless blood pump comprises a volute, at least one separating piece, a rotor, a diversion piece and a power device; the volute is provided with a first cavity, a first liquid inlet and a first liquid outlet, wherein the first liquid inlet and the first liquid outlet are communicated with the first cavity; the separating piece and the rotor are arranged in the first cavity; the separating piece is provided with a second cavity, a second liquid inlet and a second liquid outlet, wherein the second liquid inlet and the second liquid outlet are communicated with the second cavity; the rotor is sleeved with the separating piece and fixedly connected with the separating piece through the diversion piece; a laminar flow channel is formed between the inner wall of the separating piece and the outer wall of the rotor. By supplying blood in this mode, the blood which needs to be supplied can flow in a laminar flow state, so that phenomena of hemolysis and thrombosis do not occur to the blood easily; meanwhile, the blood is not squeezed in the laminar flow mode, the damage to the blood is relatively small, long-term blood supplying can be conducted, the requirements of long-term blood supplying can be met, and the quality of the blood is ensured.

The invention discloses a traditional Chinese medicine composite which is applied to preparing the medicine for curing retinal vein occlusion. The traditional chinese medicine composite is composed of ginseng, leech, centipede, scorpion, woodlouse, cicada slough, red peony root and borneol and the like, with efficiency of supplementing qi and activating blood circulation and eliminating blood stasis and freeing channels. The traditional chinese medicine composite has the function of osmosis resistance, strengthening the venous constriction, improving the flexibility of the vein wall, and increasing the venous pressure of the blood vessel wall, so as to reach the detumescence and relief purpose for vein blood stasis symptom, alleviate retinal edema and the edema in blood vessels, strengthen retinal artery blood supplying and improve the sight of patients who have retinal vein occlusion. The traditional chinese medicine composite has obvious curative effects on curing the retinal vein occlusion, and the total curative effect ratio which is validated in clinical trials of curing the retinal vein occlusion through the traditional chinese medicine composite can reach 91.9%, with security and simplicity and few adverse effects.

The invention discloses a docetaxel-absolute ethyl alcohol tumor embolization agent and a preparation method thereof. The raw materials of the tumor embolization agent are composed of docetaxel, sodium alginate and absolute ethyl alcohol. The docetaxel-absolute ethyl alcohol tumor embolization agent and the preparation method thereof have the advantages that the hardening and chemical ablation effects of the absolute ethyl alcohol are utilized to load the antitumor drug docetaxel and self-developed sodium alginate microspheres, and the prepared embolization agent can embolize peripheral bloodvessels, can occlude blood vessels with different apertures and different flow quantities, and is transported easily through a catheter, obtained easily and disinfected easily; antitumor drug-docetaxel can be effectively carried to arrive into tumor blood supplying vessels and slowly released in the local tumor, thereby improving the curative effect of tumor interventional embolization treatment.

The invention provides a protective exoskeleton plaster for cranial bone absence. The protective exoskeleton plaster comprises an exoskeleton plaster body and an annular double-sided adhesive, whereinthe exoskeleton plaster body is composed of an external surface layer, an exoskeleton plate and a wrapping layer, and an air vent valve is mounted on the exoskeleton plaster body. According to the protective exoskeleton plaster for cranial bone absence, an exoskeleton support can be equipped outside a scalp of a cranial bone absence part, injury to intracranial tissue caused by an external forcecan be withstood, a normal and stable intracranial pressure can be maintained, a normal form of a cranial cavity can be restored, a normal anatomical position of the intracranial tissue is restored, agood protecting and supporting action is exerted, collapse of the intracranial tissue and a ventricular system is avoided, improvement on brain tissue blood supplying and lowering of incidence rate of complications such as intracranial hemorrhage, epilepsy and hydrocephaly are facilitated, favorable conditions are created for a subsequent cranioplasty, and thus, a patient can gain better prognosis.

The present invention belongs to medical technique field, a medicinal composition for treating cardiovascular and cerebrovascular diseases and preparation and application thereof and preparation containing the medicinal composition are disclosed. Constitution of raw material medicine containing medicinal components used for preparing the medicinal composition is: fructus trichosanthis 100 to 2000 shares, safflower 100 to 1500 shares, or is: fructus trichosanthis extraction 2 to 160 shares, safflower yellow pigment 1 to 45 shares. The medicinal composition can be prepared into various pharmaceutically any acceptable preparations, optimizing injection or oral preparation. The medicinal composition of the present invention has effects such as dilating coronary artery, increasing coronary flow, inhibiting thrombocyte coagulation, decreasing blood viscosity, improving hemorheology and microcirculation, reducing thrombosis, improving heart blood-supplying function, decreasing cerebrovascular resistance, increasing cerebrovascular flow, improving brain microcirculation and etc.

The invention discloses a medicine cake for treating cervical spondylosis. The medicine cake is characterized by being prepared from, by weight, 2 parts of symplocos chinensis, 2 parts of coniogramme japonica, 2 parts of tiger grouper, 1 part of tylophora koi, 1 part of rhizomes of buddleia davidii franch, 1 part of roots of henry currant, 1 part of primula szechuanica, 1 part of the root of cissus rhombifolia, 1 part of japanese ophiorrhiza herb, 1 part of tacca chantrieri andre, 1 part of dallergiahancai benth bark, 1 part of camphor tree bark, 1 part of toddalia asiatualam and 1 part of root-flower of daphne odora thunb. For achieving convenient using and the most suitable treating effect, a preparing method of the medicine cake includes the steps that the fourteen kinds of herbal medicine powder are prepared into medicine powder, and then the medicine cake with the effects of activating blood, dissolving stasis, relieving swelling, removing stasis, dispelling wind and eliminating dampness is modulated through white sugar and boiled water. After the medicine cake is externally applied, the medicine effect can be enduringly acted on the affected part, meridian warming and activating, swelling relieving and stasis removing are achieved, blood circulation is improved, brain blood supplying is promoted, and therefore the effect of treating cervical spondylosis is achieved. The medicine cake has the advantages of being low in making cost, convenient to use, good in treating effect and free of side effect.

The invention relates to the field of medical treatment, in particular to a magnet therapy paster for treating the tumor. The magnet therapy paster is composed of a paster body comprising a medical adhesive tape adhering layer and a protection layer, a magnet therapy layer made of magnetic materials and a viscosity agent, and the like, and has different magnetic field intensities, different shapes and different specifications and models. The magnet therapy paster has the functions of restraining tumor tissue blood supplying and metabolism, changing cancer cell forms, inducing tumor cell apoptosis, restraining tumor growth, enabling the tumor to gradually become smaller, eliminating the inflammation of the vascular wall, reducing pain signal transmission, controlling middle and late period cancer diffusion and pains, improving local microcirculation and immunity and not hurting the benign adjustment of the normal cells. When the magnet therapy paster is used, the specifications and models are selected according to the ages, the states of illness and the nidus positions, the protection layer is uncovered, the magnet therapy layer and the adhering layer in the paster body tightly adhere to the channel and collateral skin in the nidus area and related shu-acupoint or Shenque acupoint, a plurality of pasters can be used at different positions at the same time, and the paster is replaced every one to two days.

The externally applied medicine ointment for treating headache is prepared with red lady-bug, cantharides, dahurian angelica root, cape jasmine, croton, cinnabar, realgar, musk and honey in certain proportion, and through stoving, crushing, grinding into 100-200 mesh, mixing and bottling. The present invention has no damage to internal organs, can stop pain and improve the cerebral vascular blood supplying and oxygen supplying state, and has no any toxic side effect.