183 results about "Peripheral vessels" patented technology

Methods and apparatus for treating or preventing endoleaks after an endovascular graft (e.g., a stent, tubular graft, stent-graft, coated stent, covered stent, intravascular flow modifier or other endovascular implant that affects, limits or prevents blood flow into a vascular defect such as an aneurysm, arterio-venous fistula, arterio-venous malformation, vessel wall perforation, etc.) has been implanted in the vasculature of a human or veterinary patient. An expansile polymeric material, such as a swellable polymer (e.g., a hydrogel), a flexible or elastomeric polymer foam (e.g. silicone, polyurethane, etc.) or a carrier member (e.g, a coil, filament, wire, etc) that carries a quantity of such expansile polymer is delivered into a perigraft space (i.e., space between the endovascular graft and the surrounding blood vessel wall) such that the polymeric material expands in situ to substantially fill the perigraft space or a portion thereof. The expansile polymeric material is delivered into he perigraft space through a catheter and / or cannula that is placed prior to, during or after the implantation of the endovascular graft. The invention includes an injector apparatus that is useable to deliver the expansile polymeric material through the wall of a previously implanted graft. After delivery into the perigraft space, the expanded polymeric material expands so as to fill all or an intended portion of the perigraft space in a manner that substantially prevents additional blood from leaking or flowing into such perigraft space. One type of blood-absorbing, porous, expansile polymeric material useable in this invention is a super-expansile hydrogel.

The invention relates to a surgical instrument for at least partially occluding a body conduit comprising a first jaw, a second jaw opposing the first jaw and moveable relative to the first jaw to occlude the conduit, and an insert being mounted by at least one of the first and second jaws with a length of the insert extending along at least one of the first and second jaws. One of the first and second jaws may further comprise a retention barb to provide a friction fit with the insert. The insert is flexible, disposable and may be formed by injection molding. The retention barb may be a three-sided or multiple-sided barb that is formed at the proximal end of at least one of the first and second jaws. The first and / or second jaws may be bent and / or curved. In another aspect, the insert comprises an outer wall and an inner wall for fitting over the jaw, and the inner wall further comprises a molded, rectangular raised ring formed at the proximal end to aid the retention of the insert over the retention barb of the jaw. The insert may be removed from the jaw by pulling the insert in a distal direction to overcome the friction fit of the retention barb. The insert may further include a soft tip covering the distal end of one of the jaws to minimize trauma during surgery. The distal ends of the jaw and the insert may be tapered to allow ease of installation and removal. In another aspect, the insert and jaws may be removably attached to one another in a snap-fit relationship where the jaws may include one or more holes and the insert may include one or more projections. It is appreciated that the holes and projections may vary in width, depth and height depending on application.

An apparatus, system and method for re-canalization or opening a passage through an occlusion in a blood vessel is disclosed. The apparatus and method, which are appropriate for both cardiovascular as well as peripheral vessels, use hydraulic pressure to drive a vibratable member, and the system includes a control unit to permit the frequency or amplitude of oscillation of the vibratable member to be adjusted to suit the morphology or hardness of the target occlusion. Also disclosed is a method for adjusting the force of vibration.

A scaffold is formed by several segments joined or connected to each other by only at least one coupling. The coupling decouples the segments in the axial direction over a finite distance of axial displacement. The scaffold when implanted in a peripheral vessel reduces loading on rings of a segment due to the decoupling of the segments in the axial direction over the finite distance.

A novel method is presented for detecting coronary arteries as well as other peripheral vessels of the heart. After finding the location of the myocardium through a segmentation method, such as a graph theoretic segmentation method, the method models the heart with a biaxial ellipsoid. For each point of the ellipsoid, a collection of intensities are computed that are normal to the surface. This collection is then filtered to detect the cardiovascular structures. Ultimately, vessel centerline points are detected using a vessel tracking method, and linked together to form a complete coronary artery tree.

An intravascular catheter for peri-vascular and / or peri-urethral tissue ablation includes multiple needles advanced through supported guide tubes which expand around a central axis to engage the interior surface of the wall of the renal artery or other vessel of a human body allowing the injection an ablative fluid for ablating tissue, and / or nerve fibers in the outer layer or deep to the outer layer of the vessel. A method of treating hypertension involves injecting an ablative fluid such as ethanol deep into zones in the wall of the renal artery such that the zones of fluid merge to form a circumferential ablation ring at a depth which ablates sympathetic nerves while minimizing injury to interior layers of the vessel wall.

The invention belongs to the technical field of bioscience and medical science health-care foods and relates to a formula and preparation method of a ginseng health-care cake containing eight delicacies. The ginseng health-care cake containing eight delicacies is obtained by formulating and processing Chinese medicines including ginseng, coix seeds, hindu lotus lumule, gordon euryale seeds, Chinese yam, tuckahoe, atractylis ovata, semen lablab album and the like together with food rice powder (or glutinous rice flour or flour), white sugar (or gooey or xylitan), osmanthus and the like by using a biotechnology, medical science theory and a health-care food formula preparing technology, is rich in nutrition, has the effects of resolving phlegm, detoxicating, destroying intestinal worms, clearing liver, improving vision, reinforcing the spleen, arresting diarrhea, enriching skin, polishing, effectively improving blood circulation of blood vessels of the brain and peripheral vessels, treating arteriosclerosis, hypertension, diabetes and senile dementia, lowering serum and cholesterin, resisting ageing, nodule and fungi, preventing the growth and the diffusion of cancer cells, invigorating the brain, strengthening the body, keeping fit, beatifying and preventing and treating diseases, and is a safe, nutritional and healthy food for people to eat.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. The scaffold has a structure that produces a low late lumen loss when implanted within a peripheral vessel and also exhibits a high axial fatigue life. In a preferred embodiment the scaffold forms ring structures interconnected by links, where a ring has 12 crowns and at most two links connecting adjacent rings.

A method and apparatus is provided for use in spinal fusion procedures. An interbody fusion device has a first piece that is a load bearing device designed to bear the axial loading from the end plates of adjacent vertebrae. A second piece of the interbody fusion device is a retention component whose primary functions are to prevent migration of the load bearing device and loss or migration of graft material from within the load bearing device. A secondary function of the retention component is to address fixation of fasteners when the surgeon is confronted with a challenging access to adequate boney structures due to excessive curvature / angulation of the vertebrae column, minimal invasive surgery techniques, danger to surrounding vascular or neurological tissues, poor bone quality, or similar surgical complications. A tertiary function of the retention component is to provide better alignment and stabilization of misaligned vertebrae when spondylolisthesis is a significant factor. One or more fasteners secure the retention component to each of the vertebrae above and below the load bearing device. The fasteners cause the end plates of the vertebrae to compress the end plates to the load bearing device to facilitate proper fusion.

A system for removing a thrombus. The system includes an expandable device that maintains axially fixed engagement with the thrombus. The expandable device applies a first force to the thrombus according to surrounding vessel size. The expandable device applies a second force to the thrombus according to an increased vessel size to maintain axially fixed engagement.

A method and apparatus is provided for use in spinal fusion procedures. An interbody fusion device has a first piece that is a load bearing device designed to bear the axial loading from the end plates of adjacent vertebrae. A second piece of the interbody fusion device is a retention component whose primary functions are to prevent migration of the load bearing device and loss or migration of graft material from within the load bearing device. A secondary function of the retention component is to address fixation of fasteners when the surgeon is confronted with a challenging access to adequate boney structures due to excessive curvature / angulation of the vertebrae column, minimal invasive surgery techniques, danger to surrounding vascular or neurological tissues, poor bone quality, or similar surgical complications. A tertiary function of the retention component is to provide better alignment and stabilization of misaligned vertebrae when spondylolisthesis is a significant factor. One or more fasteners secure the retention component to each of the vertebrae above and below the load bearing device. The fasteners cause the end plates of the vertebrae to compress the end plates to the load bearing device to facilitate proper fusion.

The invention discloses a teabag with cordyceps sinensis and mulberry leaves, and a preparation method thereof. The health-care teabag is prepared by taking artificially cultured cordyceps sinensis and mulberry leaves as main components, adding an appropriate quantity of kudzuvine roots, aloes, honeysuckle flowers, chrysanthemums, liquorice and ilex latifolia to the main components and fully utilizing the respective functional nutrient components of the materials for organic collocation. The teabag has the advantages that the teabag can effectively improve the blood circulation of cerebral and peripheral vessels through frequent drinking, has good efficacy in treating hyperlipidemia and hypertension, lowering cholesterol, resisting tumors and aging and enhancing organism immunity, and is a health-care drink suitable for people at different ages.

An apparatus, system and method for re-canalization or opening a passage through an occlusion in a blood vessel is provided. The apparatus and method, which are appropriate for cardiovascular and peripheral vessels, use a pulling member and a spring member, for example a compression spring, to oscillate a drilling component. The drilling component at the distal end of the catheter tip has combined longitudinal stiffness for penetrating a total or partial occlusion and high axial (lateral) flexibility to improve deliverability and crossability of a catheter through a partially occluded vessel or a tortuous vessel, and may taper distally. The system of the invention includes the apparatus and a control unit to permit adjustment of the frequency or amplitude of oscillation of the drilling component. Also provided is a method for oscillating a drilling component using a pulling member and a spring member and a method of traversing an occlusion.

The present invention discloses one kind of stem cell preparation for treating tissue ischemia disease and its preparation process. The stem cell preparation includes mononuclear cell separated and extracted form peripheral blood, CD 133+ cell separated and extracted from other body's tissue, or vascular endothelial ancestral cell derived from CD133+cell. The preparation process includes separation and purification of stem cell, culture, preparation of cell suspension and other steps. The positive effect of the present invention is that the stem cell preparation has high curative effect and no toxic side effect to obliterative cardiac, cerebral and peripheral vascular and corresponding genetic defective diseases.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. The scaffold has a morphology resulting from a biaxially expanded tube arranged to provide a more balanced, or less anisotropic axial and radial mechanical properties. The scaffold has improved mechanical properties suited for use as a balloon expandable scaffold implanted in a peripheral vessel of the body.

An apparatus, system and method for re-canalization or opening a passage through an occlusion in a blood vessel is provided. The apparatus and method, which are appropriate for both cardiovascular as well as peripheral vessels, use a pulling member and a spring element, for example a compression spring, to oscillate a vibratable member, and the system of the invention includes the apparatus and a control unit to permit the frequency or amplitude of oscillation of the vibratable member to be adjusted. Also provided is a method for oscillating a vibratable member using a pulling member and a spring element. The apparatus and system are useful not only for penetrating a total or partial occlusion, but also to improve deliverability of a catheter through a partially occluded vessel or a tortuous vessel.

The invention relates to an occluder conveyance system comprising a puncture sheath with a puncture sheath tube and a propel member displaced therein, an occluder tubular carrier having a unilateral valve in the end and a conveyance steel cable used for cardiac surgery department. The puncture sheath tube and the occluder tubular carrier form a detachable connection by a set of connection member. The occluder conveyance system introduces the occluder from the body surface directly to the affected part by the puncture sheath under the guidance of an ultrasonic equipment. It is free of radiation, contrast and other interference tool, having no request on patient age and no impact on peripheral vessel, in addition, it has short operation time and low therapycost.

An implantable infection shield and system for drug delivery in vascular tissue includes a relatively non-biodegradable porous linked fibrous biomaterial which controls and directs cell growth and angiogenesis from adjacent vascular tissue into the implant. Infection shield embodiments stimulate cell growth and angiogenesis from adjacent vascular tissue which effectively blocks passage of pathogenic microorganisms along percutaneously implanted objects. In embodiments for drug delivery, a reservoir of the same biomaterial may contain either (1) a cell culture system enclosed within a porous sealable interior chamber or (2) a biodegradable matrix in which one or more drugs are dispersed. After implantation of a reservoir of the first embodiment in an organism, cultured cells obtain food and oxygen via diffusion in tissue fluid through the porous walls of the interior chamber, while metabolic products, including drugs, diffuse away from the cell culture in an analogous manner. In a reservoir of the second embodiment, a biodegradable matrix substantially fills the pores (voids), and progressive dissolution of the matrix releases one or more drugs into surrounding tissue fluid. Reservoirs of either embodiment comprise a plurality of voids of a predetermined size effective for stimulating angiogenesis from the surrounding vascular tissue into at least a portion of the reservoir. The reservoir thus acts to couple a source: of drugs to the circulatory system of the organism.

Obtaining a surface image captured by an endoscope inserted in a tubular organ associated with a surrounding blood vessel and representing an inner surface of a wall of the organ, generating, from a three-dimensional image representing a three-dimensional area including the organ, an adjacent blood vessel image depicting a portion of the blood vessel adjacent to the wall from a viewpoint in the three-dimensional image corresponding the viewpoint of the surface image, generating, from a three-dimensional image representing a three-dimensional area including a surrounding area of the organ, a surrounding blood vessel image depicting the blood vessel from a viewpoint in the three-dimensional image corresponding the viewpoint of the surface image, and causing the surface image, adjacent blood vessel image, and surrounding blood vessel image to be displayed in this order on a display unit.

Stent designs for use in peripheral vessels, such as the carotid arteries, are disclosed. The stents consist of a plurality of radially expandable cylindrical elements generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting members placed so that the stent is flexible in a longitudinal direction. The cylindrical elements are generally serpentine wave pattern transverse to the longitudinal axis between alternating valley portion and peak portions, the valley portion including alternating double-curved portions and U-shaped portions. The interconnecting members are attached to the double-curved portions to connect a cylindrical element to an adjacent cylindrical element and interconnecting members are attached to the U-shaped portions to connect the cylindrical element to the other adjacent cylindrical element. The designs include an eight crown and six crown stent which exhibit flexibility and sufficient radial strength to support the vessel.

A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. The scaffold has a structure that produces a low late lumen loss when implanted within a peripheral vessel and also exhibits a high axial fatigue life. In a preferred embodiment the scaffold forms ring structures interconnected by links, where a ring has 12 crowns and at most two links connecting adjacent rings.

An apparatus, system, and method for re-canalization or opening a passage through an occlusion in a blood vessel is provided. The apparatus and method, which are appropriate for cardiovascular and peripheral vessels, use a pulling member and a spring element, for example a compression spring, to oscillate a distal component disposed at a distal end of the spring element. The apparatus further includes a sleeve covering the spring element and at least a portion of the distal component. The sleeve may reduce friction between the spring element and the vessel lumen as the spring element vibrates during operation of the apparatus. The sleeve may also serve to protect or seal the spring element from blood and / or plaque debris that is loosened from an occlusion during a re-canalization procedure.

The invention relates to a traditional Chinese medicine fumigating treatment device for peripheral blood vessels of lower limbs and effectively solves the problems that in the fumigating process of anexisting fumigating treatment device for lower limbs, the amount of steam cannot be regulated, functions are single, and completeness is poor. The technical scheme adopted by the invention lies in that an air hole regulating device is used, so that the amount of the steam can be regulated by feet according to autologous needs; exhaust valve regulating devices are used, so that the amount of exhaust can be regulated according to the amount of the steam, and the situation that pressure in a fumigating chamber is too high can be avoided; a lifting device is used, after fumigating is completed, apart of medicinal liquid possibly remains, waste is caused if the remaining medicinal liquid is directly dumped, through the lifting device, the fumigating state can be switched to a foot soaking state, and the medicinal liquid can be sufficiently used; a medicine decocting barrel is used, so that the completeness of equipment is stronger; and a medicine pressing plate is used, so that when medicines are decocted, traditional Chinese medicines can be extruded, and the utilization rate of the traditional Chinese medicines is higher. The traditional Chinese medicine fumigating treatment devicedisclosed by the invention is simple to operate, high in suitability and diversified in functions, and can better meet requirements of people.

A shaking device for a fully-automatic instant check meter, which is used for shaking blood in a test tube uniformly. The shaking device comprises a frame body, a barcode printer, a first bracket, a second bracket, a rotating mechanism, a vacuum blood vessel shaking mechanism and a peripheral blood vessel shaking mechanism, wherein a first sliding rail, a first motor and a second motor are provided on the frame body; the rotating mechanism is connected to the first sliding rail in a sliding manner via a first sliding block and is connected to the first motor via a first synchronous belt; the vacuum blood vessel shaking mechanism is connected to the first sliding rail in a sliding manner via a second sliding rail and is connected to a second motor via a second synchronous belt; the peripheral vessel shaking mechanism is arranged below the vacuum blood vessel shaking mechanism; and the barcode printer is arranged at one side of the frame body. The shaking device has a simple structure and a good shaking effect, and is safe and reliable.

The invention belongs to the technical field of health food, in particular to an angelica keiskei mixed capsule and a preparation method thereof. The method comprises the following steps: cleaning well-chosen angelica keiskei, steeping with high-temperature hot water, fast placing the steeped angelica keiskei into cold water to be quickly frozen, taking out to cut up, centrifugally dewatering, drying until the water content is lower than 5 percent, pulverizing and sieving by a sieve with 100-120 meshes, thereby obtaining angelica keiskei powder; and proportionally taking and uniformly mixing the angelica keiskei powder, spirulina and ganoderma lucidum spore powder to fill a capsule, thereby preparing the angelica keiskei mixed capsule. In the invention, the effective components of the angelica keiskei are utilized to synergistically act with the spirulina and the ganoderma lucidum spore powder, thereby having the effects of increasing the immunity, reducing blood fat and blood pressure, promoting angiocarpy and peripheral vessel expansion, and the like and being the health-care food with comprehensive functions and obvious effects; the technological process is simple, and the effective components of the angelica keiskei can be effectively frozen by adopting the mode of low-temperature quick freezing, thereby avoiding wastage and maximizing the efficacy thereof.

A minimal intrusive cardiac support apparatus is disclosed which requires only one incision into a main blood vessel or heart chamber. The apparatus includes a pair of generally coaxial and slideably arranged cannulae (one inner and one outer) communicatively coupled to a blood pump for providing right-heart and / or left-heart cardiac support during cardiac surgery. Optional balloons may be mounted on the outside of the inner and outer conduits which can be selectively inflated to seal off the sides surrounding vessel or to deliver cooling fluid or medication to the surrounding tissue. Using the apparatus, a method of pumping blood through the body is also disclosed.

Disclosed and claimed are compositions and methods for therapy and / or prevention of restenosis and / or atherosclerosis. The compositions can include an agent for inhibiting VEGF and an agent for inducing vessel maturation; for instance, the soluble VEGF receptor and ang-1. Embodiments can include kits.

The Chinese medicine preparation for treating thromboangitis obliterans as chronic obliterative inflammation of peripheral blood vessel is prepared with ant, licorice, red sage, zedoary, angelica and other Chinese medicine as raw material. The medicine pwoder is obtained after crushing, soaking, decoration, filtering, concentration, alcohol extraction, mixing, grinding and technological steps. The medicine preparation of the present invention has unique recipe and high curative effect.

A system and method for taking non-invasive blood pressure and other vascular parameter measurements includes placing a vascular compression device about an appendage of a subject. An arterial / venous occlusion cuff is placed about a base of the appendage. The vascular compression device is activated to generate compression ischemia in the appendage. The arterial / venous occlusion cuff is pressurized to generate arterial / venous occlusion in the appendage. The vascular compression device is deactivated. The arterial / venous occlusion cuff is gradually depressurized to allow blood and other body fluids to flow into the appendage and thereupon determine vascular parameters such as, for example, systolic arterial blood pressure, diastolic arterial blood pressure, venous blood pressure, arterial blood flow, blood vessel compliance, and appendage blood volume.