56results about How to "Reduce stenosis" patented technology

Disclosed is a valve implanting device comprising a collapsible frame, inner and outer guide wires removably connected to the collapsible frame, and a plurality of valve flaps attached to the collapsible frame. The collapsible frame is inserted into a patient's femoral vein or artery, guided to a deployment position using the guide wires, expanded using the guide wires, and stabilized using the guide wires to manipulate fixating hubs on the collapsible frame. The collapsible frame includes a central hub, a plurality of spokes, fixating hubs, gripping members, and a plurality of valve flaps.

The invention discloses a sandwiched stapler type alimentary tract anastomosis dissecting sealer, relating to the surgical instruments. The invention provides a sandwiched stapler type alimentary tract anastomosis dissecting sealer which can prevent the alimentary tract anastomotic stoma from tearing, leaking and errhysis from the cut section in surgical operations. The sandwiched stapler type alimentary tract anastomosis dissecting sealer is provided with a nail anvil (which is also called as a bottom needle holder), a nail cartridge (which is also called as a nail anvil box), a sealer body, a movable handle, an adjusting button, a cutter cushion and an anastomosing nail (which is also called as a suturing nail), wherein the nail anvil is connected with the front end of the sealer body, the adjusting button is arranged at the tail part of the sealer body, the movable handle is arranged at the back of the sealer body, a safety button is arranged at the connection of the movable handle and the sealer body, the cutter cushion is arranged on the nail anvil, the anastomosing nail is arranged at the front end part of the sealer body, a membrane is arranged on the surface of the nail anvil (which is also called as the bottom needle holder), and a membrane is also arranged on the surface of the nail cartridge (which is also called as the nail anvil box); and after stapling, a sandwich structure consisting of the membrane, an intestinal wall and the membrane is formed.

A method for treating stenosis in a spine comprises percutaneously accessing the epidural space in a stenotic region of interest, compressing the thecal sac in the region of interest to form a safety zonem, inserting a tissue removal tool into tissue in the working zone, using the tool to percutaneously reduce the stenosis; and utilizing imaging to visualize the position of the tool during at least a part of the reduction step. A tissue excision system for performing percutaneous surgery, comprises a cannula comprising a tissue-penetrating member having a distal end defining an aperture on one side thereof, an occluding member slidably received on or in the cannula and closing the aperture when the occluding member is adjacent the cannula distal end, means for engaging adjacent tissue via the aperture, and cutting means for resecting a section of the engaged tissue.

A method for treating stenosis in a spine comprises percutaneously accessing the epidural space in a stenotic region of interest, compressing the thecal sac in the region of interest to form a safety zonem, inserting a tissue removal tool into tissue in the working zone, using the tool to percutaneously reduce the stenosis; and utilizing imaging to visualize the position of the tool during at least a part of the reduction step. A tissue excision system for performing percutaneous surgery, comprises a cannula comprising a tissue-penetrating member having a distal end defining an aperture on one side thereof, an occluding member slidably received on or in the cannula and closing the aperture when the occluding member is adjacent the cannula distal end, means for engaging adjacent tissue via the aperture, and cutting means for resecting a section of the engaged tissue.

A method for treating stenosis in a spine comprises percutaneously accessing the epidural space in a stenotic region of interest, compressing the thecal sac in the region of interest to form a safety zonem, inserting a tissue removal tool into tissue in the working zone, using the tool to percutaneously reduce the stenosis; and utilizing imaging to visualize the position of the tool during at least a part of the reduction step. A tissue excision system for performing percutaneous surgery, comprises a cannula comprising a tissue-penetrating member having a distal end defining an aperture on one side thereof, an occluding member slidably received on or in the cannula and closing the aperture when the occluding member is adjacent the cannula distal end, means for engaging adjacent tissue via the aperture, and cutting means for resecting a section of the engaged tissue.

An intraluminar prosthesis which includes a tubular member having at least one end which is at an oblique angle to the lumen. The prosthesis is inserted into a body lumen, such as a blood vessel, while compressed. The prosthesis is expanded within the lumen, and the oblique end of the prosthesis contacts the lumen at an oblique angle. This oblique angle reduces the stenotic effects of hyperplasia which generally occurs at the ends of intraluminal prostheses.

The invention provides a medical device having a catheter and one or more expandable constricting / occluding members. The catheter has a lumen communicating with a port at its distal end. The lumen and port are adapted for introduction of therapeutic or diagnostic devices, including an angioplasty / stent catheter and an atherectomy catheter, into a vertebral or basilar artery. The constrictor / occluder is mounted proximal to the port of the catheter. Manometers may be mounted distal to one or more constrictors for measuring pressure distal to the constrictor(s). Methods of using the devices for preventing distal embolization during vertebral and / or basilar procedures by reversing blood flow in the vertebral artery toward the subclavian artery are disclosed.

Techniques and devices for treating atherosclerotic disease use controlled cryogenic cooling, often in combination with angioplasty and / or stenting. A combination cryogenic / angioplasty catheter may cool the diseased blood vessel before, during, and / or after dilation. Controlled cooling of the vessel wall reduces actual / observed hyperplasia as compared to conventional uncooled angioplasty. Similar reductions in restenosis may be provided for other primary treatments of the blood vessel, including directional arthrectomy, rotational arthrectomy, laser angioplasty, stenting, and the like. Cooling of vessel wall tissues will often be performed through plaque, and the cooling process will preferably take the thermodynamic effects of the plaque into account.

A cabin for a work vehicle comprises: a driver's seat positioned within the cabin; cabin frames including at least a transverse frame located in a rear region of the cabin; a roof supported by at least some of the cabin frames; at least one air-conditioning duct located within the roof; an air conditioning unit located rearwardly with respect to a rearward end of a seat portion of the driver's seat and adjacent the transverse frame for conditioning air and for feeding air-conditioned air into the at least one air-conditioning duct.

A system and associated method for manipulating tissues and anatomical or other structures in medical applications for the purpose of treating diseases or disorders or other purposes. An implant for attachment of soft tissue to bone, an insertion tool for anchoring suture anchors to bone, and a method for anchoring a suture anchor to bone.

A treatment assembly is positioned along an AV-fistula and couples therapeutic energy to an adjacent area due to a material response to an applied energy field from a remotely located energy source. The treatment assembly may be delivered into the fistula through a hemodialysis needle, or may be secured to the fistula graft itself and implanted therewith within a patient. A cover provides a shield between an anastomosis area and blood flow. Another AV-fistula includes a valved reservoir that receives a fluid agent from a hemodialysis needle while moving the needle into or from the fistula; the agent leaks from the reservoir into the fistula lumen. Another valved fistula is adjustable between an open condition and closed conditions during and between hemodialysis treatments, respectively. Another AV-fistula has a bladder reservoir coupled to a second refillable fluid reservoir and is adapted to locally deliver a therapeutic agent into the fistula lumen.

The invention provides a degradable expandable local urine tract intracavity support system to effectively support a local lesion urine tract after urine tract stricture obstruction surgery and to prevent stricture obstruction replase due to postoperation scar hyperplasia and contracture. The support system is made of degradable material and can be degraded after scar stability and before adhesive lithogenesis formation and can be discharged with urine outside the body; and the support system comprises but is not confined to a naked rack, a drug eluting stent or a drug coating layer rack, a film covering rack, etc. The support is compressed into an exotheca with small caliber and then released after reaching a target urine tract position, then expanded and enlarged to support the lesion urine tract; the internal diameter and length of the support can be adjusted according to clinic demands; and compared with traditional double J type ureter racks and catheters, interference and damage to normal urine tract except for the stricture part can be avoided, and limitation of rack lumen inner diameter by the urine tract physiological stricture part can be avoided.

A catheter is provided for insertion in the he blood vessel of a patient for ultrasonically imaging the vessel wall. The catheter includes a tubular element and an internally housed drive cable for effective circumferential scan about the catheter of an ultrasonic generating means. Both the tubular element and the drive cable are of a size and flexibility sufficient to permit their introduction into the vessel and subsequent advancement through the vessel to the location of the vessel wall where imaging is desired.

The invention discloses a directional disintegrating traceable intestinal anastomosis stent, which comprises a through tube which is made from a human-acceptable and degradable material, wherein the middle of the through tube is of a tubular structure, and two ends are gradually expanded to form trumpet-shaped openings; bunch grooves or convex rings for tying intestinal broken ends are arranged on the joints of the tubular middle of the trumpet-shaped opening; a creeping anastomosis section for the intestinal broken ends on two sides is arranged in the middle of the through tube; annular grooves in circumferential direction are marked in the middle and in two ends of the through tube; and barium sulfate is contained in material. The stent can gradually break according to a pre-designed scheme, so as to enhance the supporting capacity thereof, to reduce the occurrence of leakage or stenosis of anastomosis and additionally to enhance controllability over a stent splitting process, and the stent can improve foreseeability when designing; and the stent can be developed through X radiography.

The invention provides a medical device having a catheter and one or more expandable constricting / occluding members. The catheter has a lumen communicating with a port at its distal end. The lumen and port are adapted for introduction of therapeutic or diagnostic devices, including an angioplasty / stent catheter and an atherectomy catheter, into a vertebral or basilar artery. The constrictor / occluder is mounted proximal to the port of the catheter. Manometers may be mounted distal to one or more constrictors for measuring pressure distal to the constrictor(s). Methods of using the devices for preventing distal embolization during vertebral and / or basilar procedures by reversing blood flow in the vertebral artery toward the subclavian artery are disclosed.

The invention relates to methods and devices for a transcatheter heart valve replacement (A61F2 / 2412), and in particular a device and method for percutaneously anchoring a transcatheter heart valve.

The invention relates to the technical field of disposable anastomats, in particular to a disposable internal opening cutting and enclosing anastomat. The disposable internal opening cutting and closing anastomat comprises a cutting molding assembly, a transmission assembly and a gun body provided with a triggering assembly, wherein the cutting molding assembly comprises a nail cabin bracket, a scalpel support ring, a nail pressing seat, a nail pushing device, a nail cabin support and a nail cabin; the nail cabin is clamped in a clamping groove of the nail cabin support through a buckle; the nail cabin support is directly connected with the gun body through the transmission assembly; the head of the nail cabin is circular-arc-shaped or parabolic; nail grooves of the nail cabin are of asymmetrical mode; the transmission assembly comprises a transmission lead screw; the lead screw is a large-screw-pitch left-handed lead screw; the tail end of the lead screw is connected with a corresponding lengthened nut assembly; the lengthened nut assembly and a knob positioned at the tail end of the gun body are molded together by injecting or embedded together; the gun body is a lever type or connecting-rod-type gun body. The disposable internal opening cutting and enclosing anastomat is skillful in design, and has a good application prospect; by adopting the disposable internal opening cutting and enclosing anastomat, a plurality of use problems in the prior art can be solved effectively.

The invention provides a medical device having a catheter and one or more expandable constricting / occluding members. The catheter has a lumen communicating with a port at its distal end. The lumen and port are adapted for introduction of therapeutic or diagnostic devices, including an angioplasty / stent catheter and an atherectomy catheter, into a vertebral or basilar artery. The constrictor / occluder is mounted proximal to the port of the catheter. Manometers may be mounted distal to one or more constrictors for measuring pressure distal to the constrictor(s). Methods of using the devices for preventing distal embolization during vertebral and / or basilar procedures by reversing blood flow in the vertebral artery toward the subclavian artery are disclosed.

A use of an umbilical splint for shaping an umbilicus after an abdominal operation is described. The umbilical splint may comprise an insertion portion extending in a longitudinal direction and terminating at an insertion end for insertion into the umbilicus. Furthermore, the insertion portion may comprise a bulbous section near the insertion end. The bulbous section may be operable to apply pressure to a tissue of the umbilicus after the abdominal operation. The insertion portion may have different cross-sectional shapes including circular and oval. Finally, the insertion portion may be configured to engage the umbilicus such that the umbilical splint is retained within the umbilicus.

The invention discloses a rectum eccentric four-cavity applicator. The outside diameter of the applicator is between 25 and 35mm; four supplying radiator ducts are inserted into a cavity of an outer tube and parallel to the axes of the outer tube; the four supplying radiator ducts are all deviated to the circle center of the outer tube, and distributed and fixed in the cavity of the outer tube at intervals along a segment of circular arc in the cross section of the outer tube; and circular arcs between two circle centers of adjacent two supplying radiator ducts are equal, and center angles corresponding to the circular arcs are between 45 and 75 DEG. By adopting the eccentric four-cavity applicator, applicators with different diameters can be selected according to the range where tumors intrude rectum and physiological characteristics of a patient; three or four supplying radiator ducts can be freely selected according to sizes of the tumors to apply radioactive sources; and the weighting of two side tubes can be regulated according to the elimination of the tumors, so that the radiated area in a high dose area is reduced, radiation to normal mucous membrane tissues and back wall of a bladder near the tumors in the rectum is reduced, the incidence rate of complicating diseases in early and late radiation is reduced, and the effect of radiation therapy is improved.

The invention relates to the field of medical devices, and particularly discloses an adjustable tracheoesophageal fistula blocking device. The adjustable tracheoesophageal fistula blocking device comprises a left disk main body, a right disk main body and flow blocking membranes placed in the disk main bodies, wherein the disk main bodies are in net structures formed by weaving materials with shape memory capacity, and the left disk main body is connected with the right disk main body by a stretchable waist. The waist of the adjustable tracheoesophageal fistula blocking device has the length-adjustable design, and can adapt to blocking of multiple tracheoesophageal fistulas in different lengths; a left disk of the tracheoesophageal fistula blocking device has the special design, and is adaptive to cross shrinkage of a physiological activity of an esophagus, so that a cross cutting effect is reduced, and esophageal stenosis can be reduced; and the adjustable tracheoesophageal fistula blocking device is good in blocking effect, and can prevent food and an esophagus secretion from entering a trachea.

The invention discloses a needle-shaped minimally invasive interventional duct-inserting device for cholangiopancreatography and belongs to the technical field of medical instruments. The needle-shaped minimally invasive interventional duct-inserting device mainly comprises a novel needle-shaped knife main body, a guide wire propelling unit and a foot-controlled washing unit. The novel needle-shaped knife main body comprises a propelling rod, a handle, an electrode plug and a multi-cavity duct. The multi-cavity duct comprises a guide wire cavity inlet, a washing liquid cavity inlet, a radiography liquid cavity inlet, a guide wire cavity, a knife wire cavity, a radiography liquid cavity and a washing liquid cavity. Guide wires penetrate into the guide wire cavity, knife wires are arranged in the knife wire cavity, and a knife wire clamping head is arranged at the remote end of the knife wire cavity; and the guide wire propelling unit is arranged on the outer guide wires in a penetrating and sleeved mode, and the foot-controlled washing unit is connected with the washing liquid cavity inlet. In short, the needle-shaped minimally invasive interventional duct-inserting device for cholangiopancreatography is simple in structure, convenient to use, high in duct-inserting success rate, small in damage and low in complication occurrence rate.

The present invention provides methods and devices for treating endovascular disease. Vibrational energy is delivered to change compliance and increase permeability at the treatment area. To improve clinical outcomes, one or more therapeutic drugs may be delivered to the treatment area.

The invention belongs to the technical field of power construction tools and in particular relates to a multifunctional wire barrow. Two tractor heads are arranged at the front and back ends of a vehicle body respectively and each tractor head is equipped with a distractor and a cab respectively; a motor, a governor and a steel wire rope bobbin are arranged on the vehicle body; the output shaft of the motor is sequentially connected with the governor and the shaft end of the steel wire rope bobbin; a support frame and a jack are arranged below the steel wire rope bobbin; hoisting rings for straightening cables are arranged on the two sides of the vehicle body respectively and have a block button structure; and the motor is a bidirectional motor which can realize positive and reverse rotation. According to the multifunctional wire barrow, direction of the whole wire barrow is convenient and rapid in change; as a manner of severe pavement abrasion in the traditional cable pulling process is changed into movement of the wire barrow, the service life of the cable is prolonged. The multifunctional wire barrow is convenient in use, high in automation degree and very strong in practicability, saves time and labor, integrates assembly, disassembly, transportation and paying off and has a reasonable structure.

It has been established that optimizing cell seeding onto tissue engineering vascular grafts (TEVG) is associated with reduced inflammatory responses and reduced post-operative stenosis of TEVG. Cell seeding increased TEVG patency in a dose dependent manner, and TEVG patency improved when more cells were seeded, however duration of incubation time showed minimal effect on TEVG patency. Methods of engineering patient specific TEVG including optimal numbers of cells to maintain graft patency and reduce post-operative stenosis are provided. Closed, single-use customizable systems for seeding TEVG are also provided. Preferably the systems are custom-designed based on morphology of the patient specific graft, to enhance the efficacy of cell seeding.

The invention discloses an ultrasonic motor driven foot acupuncture point massaging diabetic foot therapeutic apparatus, which comprises a vacuum box body (1), an ultrasonic motor (3), a rotary massaging head (4) and a far infrared emitter (5), wherein an exhaust hole (6) and inlets (8) are formed in the vacuum box body (1); seal devices (7) are arranged on the inlets (8); the exhaust hole (6) is connected to a vacuum pump arranged on the outer side of the box body; the ultrasonic motor (3) is connected to one end of a telescopic bracket (2); the other end of the telescopic bracket (2) is fixedly arranged on the inner side of the vacuum box body (1); the rotary massaging head (4) is connected to the ultrasonic motor (3) and directly faces the inlets (8); the far infrared emitter (5) is inlaid in the upper part of the plane of the rotary massaging head (4); and the ultrasonic motor (3), the rotary massaging head (4), the telescopic bracket (2), the far infrared emitter (5) and the vacuum pump are respectively connected to a control device which is arranged on the outer side of the box body.

An office chair that is ergonomically configured to allow for the coordination of stretches to the pectoralis minor muscle, trapezius muscle, and scalene muscles to open up the thoracic outlet, release muscle tension, and reinforce proper structure is provided. The stretches may be performed by an average human user while sitting in the office chair throughout the workday. The ergonomically configured chair assembly may have a brace supported by the seatback and extending downwardly therefrom over a left and right shoulder of the seated average human in a cantilevered fashion and an arm restraining device positioned rearward with respect to the rear face of the upstanding seat back.

The invention discloses application of kaempferol to drugs for treating osteoarthritis. Kaempferol decreases expression of anti-galectin-1 in sensory neurone by inhibiting NF-kappa B and MAPK signal pathway activated in the inflammatory environment, reducing expression of c-Fos, c-Jun and delta FosB in sensory neurone and inhibiting combination activity of transcription factor activator protein-1(AP-1) and DNA, expression of anti-galectin-1 in nerve cell is reduced, and accordingly development of osteoarthritis is relieved. The invention provides a new drug for clinic treatment of osteoarthritis, and meanwhile states the mechanism of the novel treatment drug. New thought and experiences are provided for better understanding the pathological process of osteoarthritis and developing the drugs for treating osteoarthritis in the future.