151 results about "Artery puncture" patented technology

The invention relates to a transradial artery and coronary artery radiography catheter and a use method thereof. The radiography catheter is formed by connecting a first catheter body, a second catheter body and a head catheter body. The first catheter body is of a structure including an outer layer, a middle layer and an inner layer. The inner layer and the outer layer are made of nylon materials, and the middle layer is a metal mesh grid. The second catheter body is made of nylon plastic, and the head catheter body is made of soft nylon. The use method of the transradial artery and coronary artery radiography catheter comprises the following steps that transradial artery puncture is carried out, and a sheathing canal is placed in the transradial artery; a guide wire is put into the root of the aorta ascendens along the sheathing canal; the radiography catheter is put into the root of the aorta ascendens along the guide wire; contrast medium pushing equipment is connected, and the radiography catheter is operated to carry out left and right coronary artery radiography under DSA fluoroscopy. The transradial artery and coronary artery radiography catheter is better in torque conducting capacity in the use process, good controllability is achieved, the catheter can enter the coronary artery more easily, damage to the blood vessel is reduced through the soft head structure, and operation difficulty and operation complications can be reduced through the use method.

The invention discloses a method for establishing a domestic rabbit atherosclerosis model, wherein the method includes high-lipidation processing on a domestic rabbit basic feed and intravenous injection of bovine serum albumin, also includes combined use of a vagina vasorum and a forcemeter for making domestic rabbit artery blood vessel endothelium injured, and particularly includes the following steps: carrying out paracentesis on a middle-lower segment of a femoral artery by 21G radial artery puncture needles; after the paracentesis is successful, inserting into a radial artery sheathing canal with the depth of 5 cm with the help of a guide wire; followed by, carrying out intravenous injection of 200 U/kg of heparin at an ear edge; after pulling out the guide wire, fixing a fine line at the tail end of the vagina vasorum, making the other end of the fine line connected with the forcemeter, allowing fingers of a left hand of an operative doctor to draw close to each other and press a femoral artery part internally containing the vagina vasorum, allowing a right hand to hold the forcemeter to pull out the vagina vasorum to 4 cm, and allowing the left hand pressing force to be 10 N displayed in the forcemeter as a degree, so as to cause vascular endothelial injury. The invention aims to provide the modeling method for the domestic rabbit atherosclerosis model, wherein the modeling method is short in period, strong in operability and relatively low in cost.

The invention provides a blood vessel closure structure which can be completely degraded. The structure especially aims at arterial puncture mouth closure. The structure comprises an anchor in a bloodvessel lumen, an anti-hemorrhagic compression object outside the lumen and a connecting suture; the portions, kept in the body, of the structure are all made from material which can be completely degraded; according to one particularly preferable embodiment, the anchor in the blood vessel lumen is closely attached to the blood vessel inner wall and anchors a puncture mouth; the anti-hemorrhagic compression object presses the blood vessel outer wall tightly and blocks the puncture mouth; the suture connects the anchor and the compression object, and through an auto-tightened knot, the sandwichstructure is fixed. By means of the blood vessel closure structure which can be completely degraded, the burden of longstanding manual pressing for hemostasis of a doctor is reduced, and time in bedof a patient is shortened; compared with a blood vessel suture closure structure, the blood vessel blocking closure structure has the advantages that the operative steps are simplified, and the learning cost and the hemostasis failure rate of a surgeon are reduced; the objects implanted in the body can be completely degraded, so that a suture removing process brought by use of non-degradable material is avoided.

The invention relates to a radial artery puncture practice model and method and belongs to the technical field of medical machinery. The radial artery puncture practice model comprises an arm model, virtual intravascular and a pulse pressure pump. The arm model comprises virtual human skin, a virtual humeroradial tendon, a virtual carpi radialis flexor tendon and a radial artery channel, wherein the radial artery channel is located below the virtual human skin. The virtual intravascular is arranged in the radial artery channel and communicated with the pulse pressure pump so that virtual blood can be pumped into the virtual intravascular through the pulse pressure pump, and the human pulse can be simulated. Therefore, the radial artery puncture practice model enables the medical personnel to conduct puncture practice, improves the operating proficiency, relieves the pain of patients, can be repeatedly use due to the fact that the virtual intravascular and the virtual human skin can be replaced after being used, reduces the practice cost, and is simple in structure, real in simulation effect and simple and convenient in practice method.

An artery puncture needle comprises a light-transmission cannula seat, a remaining needle outer cannula, a steel needle seat and a steel needle. A tubular pressure measuring joint is arranged at the rear end of the light-transmission cannula seat, the remaining needle outer cannula is opposite to the pressure measuring joint and arranged at the front end of the cannula seat, the steel needle is disposed on the steel needle seat, a holding groove which is respectively communicated with the remaining needle outer cannula and the pressure measuring joint is formed in the cannula seat, an elastic stop block which can be operated to slide between a puncture position and a pressure measuring position is movably assembled in the holding groove, a pressure measuring channel which runs through transversely is formed on the stop block, and a blood draining hole which is communicated with the holding groove is formed on the cannula seat. The artery puncture needle has the advantages that the artery puncture needle is simple in structure, convenient in operation, capable of preventing blood from spraying outwards, high in puncture success rate, accurate in pressure measurement, convenient in blood collection, and the like.

The invention discloses an automatic artery compression haemostat and a hemostasis method. The haemostat comprises a tourniquet. An airbag is arranged on the tourniquet and is connected with an air pump, a deflation valve and a pressure sensor. A pre-amplification device is connected with the output end of the pressure sensor. An output signal of the pre-amplification device is divided into two channels, one channel is directly sent to a port AD0 of the AD (analog to digital) conversion end of a single microcomputer chip, and the other channel is connected with a port AD1 of the AD conversion end of the single microcomputer chip through a pulse signal processing circuit. The single microcomputer chip controls movements of the air pump and the deflation valve through connection. The artery hemostasis with pressure measuring and timing functions is used for hemostasis, pressure as needed by compression of artery puncture points is set according to individual blood pressure values of patients, and compression time as needed by radial artery puncture points is set according to bleeding and blood coagulation time of the patients and half-life periods of anticoagulants used in operations, so that hemostasis effect of the artery puncture points is improved, comfort level of the patients is also improved, complications caused by ultrahigh or ultralow pressure are avoided, and working efficiency of medical workers is improved.

The invention provides a potent purgative decoction animal plasma freeze-dried powder and the preparation method. The preparation method includes the following procedures: (1) rats are gavaged with the medical solution potent purgative decoction for three days; (2) 30 to 45 minutes after the last feeding, the rat blood is drawn by artery puncture, the heparin is anticoagulated, the plasma is isolated, and is divided evenly and stored in clean and aseptic vessels; (3) pre-frozen for 30 minutes under conditions of -20 degrees centigrade and frozen rapidly under conditions of -80 degrees centigrade; (4)the drug-containing plasma is frozen for 2 hours, frozen and dried to produce freeze-dried powder. The preparation method solves the equivalent adding problems such as the isolated storage of the effective components that interfere with the in vitro pharmacological experiment, further improves the consistency of in vitro traditional Chinese medicine pharmacological experiment and in vivo mechanism of practical drug action, and enhances the experimental reliability.

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 provides a femoral artery puncture postoperative nursing device, belonging to the field of medical auxiliary equipment. According to a technical scheme of the invention, the femoral artery puncture postoperative nursing device is characterizing by comprising a bed body which comprises a bed board, wherein a rectangular opening is arranged at the position, close to the bed tail, of the bed board; a liftable leg clamping mechanism is arranged on the bed body and located below the rectangular opening; and a leg massage mechanism is arranged at one side of the upper part of the leg clamping mechanism. The femoral artery puncture postoperative nursing device provided by the invention has the following beneficial effect: after femoral artery puncture, an operative limb of a patientis forcibly braked, so the possibility of bleeding is reduced.

The invention relates to a hand back plate special for a two-stage operating table with joints, comprising a portable plate and a fixing plate; the portable plate is fixedly connected with a driven gear which is connected with a driven gear shaft in a rotary way; the driven gear shaft is connected on a support plate; the fixing plate is connected with the support plate; a driving gear shaft is connected with the support plate in a rotary way; the driving gear is meshed with the driven gear; the plane on which the driving gear and the driven gear are positioned is parallel to the plane on which the fixing plate is positioned. The invention eliminates the defects of the hand back plate, including effects on observing the sites of puncture and monitoring, disturbance on operation, accuracy of arterial pressure and oxygen saturation, brachia plexus injury of patients and the like. By using the invention, upper limbs of the patients can be placed on the body positions which can naturally bend and relax and the brachial plexus is free from traction, thus providing a larger operation space for operating surgeons, facilitating observation of intravenous infusion and sites of puncture of arteria radialis and ensuring fingertip oxygen saturation and arterial pressure monitoring free from disturbance.

The invention discloses a radial artery puncturing and positioning device comprising a fixing ring (1), and two sides of the radial direction of the fixing ring (1) are connected with connecting belts (2); a rotation ring (3) is connected below the fixing ring (1) in a sliding mode and is provided with a pressure numerical value display screen (4); the bottom surface of the rotation ring (3) is symmetrically provided with vibrating sensors (5) of which the output is connected with the pressure numerical value display circuit by a filtering amplifying circuit; and the rotation ring (3) is provided with a para-position identification (6) marking the position of the vibrating sensors (5). The vibration sensing technology is combined with LED screen voltage numerical value display to replace the mode of finger touch in the traditional method, so that the invention can accurately position the running direction and the position of the radial artery, improves first-time success rate of puncture, reduces the work load of arteriopuncture and avoids brining pain to patients by repeated puncture; and after the puncturing, a hemostasis bowl presses to carry out hemostasis, and the invention is convenient and quick to operate.

The invention provides a special fixing device for radial artery puncture, which includes a base, and a lifting mechanism is fixedly installed on the upper part of the base. There are two lifting mechanisms, which are axially symmetrical about the center of the base. The lifting mechanism includes a cross bar, The middle part of the cross bar is fixedly sleeved with the bushing, the front side of the bushing is fixedly connected to the support arm, the lower part of the support arm is fixedly connected to the pressure plate, and the upper part of the support arm is fixedly connected to the sheath tube clamp, and the sheath tube clamp is fastened by bolts to hold the sheath tube. A puncture needle is arranged in the sheath tube, and the left side of the crossbar is fixedly connected with a rivet. The structure of the present invention sets the sheath tube clamp and the support arm at a fixed angle of 45°, which increases the success rate of the puncture needle for puncturing the radial artery. On the other hand, the stimulation of the needle to the patient is reduced, and the crossbar is fixed at a certain height by fastening the nut, which is convenient for fixing the sheath after the puncture is successful, and reduces manpower to fix the sheath.

The invention provides a radial artery hemostasis device. The radial artery hemostasis device comprises a fixing band, a stressed plate and a pressing plate. The fixing band is provided with two opposite free ends. Two through holes are formed in the two ends of the stressed plate respectively, and the free ends of the fixing band penetrate in the through holes. One end of the pressing plate is connected into the through hole in one end of the stressed plate in a rotating mode, and the other end of the pressing plate is connected into the through hole in the other end of the stressed plate in a buckled mode. The other end of the pressing plate abuts against the inner side of the corresponding free end of the fixing band. According to the radial artery hemostasis device, temporary hemostasis by compression can be conducted on the radial artery puncture part of a patient, fixing is reliable, and the problem that the hemostasis effect is poor due to looseness of a hemostasis device is solved; moreover, compression force of the radial artery hemostasis device can be adjusted according to the blood flow condition at any time. The radial artery hemostasis device is easy to operate and safe and reliable in hemostasis.

The invention relates to a novel artery puncture trocar, which comprises a needle tube and a core, wherein one end of the core is connected with a detachable handle, and a core cap is connected on the handle; the needle tube can be penetratively sleeved outside the core in a replaceable way, and tip of the core is exposed out of the needle tube. The novel artery puncture trocar has the beneficial effects of high puncture success ratio, and safer and more convenient puncture.

The invention provides an arm support device for a radial artery puncture. The arm support device comprises a back plate and an upper limb fixing device, the upper limb fixing device comprises an upper arm supporting device, a front arm supporting device, a hand supporting device and a palm fixing device, the upper arm supporting device, the front arm supporting device and the hand supporting device are sequentially connected through universal connecting members, and the front end of the hand supporting device is connected with the palm fixing device through a rotating shaft. Length of the arm support device can be adjusted and fixed correspondingly according to length of upper arms and front arms of a patient; angle of the arm support device can be adjusted and fixed correspondingly according to joint angle; the arm support device can be inward or outward rotated and fixed correspondingly according to a radial artery puncture point position of the patient; hands are enabled to extend and fixed through the palm fixing device. The arm support device is suitable for left and right radial artery puncture.

The invention relates to a radial artery puncture fixing compression plate which comprises a plate body. The plate body comprises an arm plate and a hand plate, and the position, between the end portion of the arm plate and the arm plate, of the hand plate is in a bending shape. According to the radial artery puncture fixing compression plate, the two ends of a wrist joint are fixed through the hand plate and the arm plate respectively, and an optimal puncture body position is provided for the wrist joint before puncture so that the success rate of radial artery puncture can be improved; the optimal body position of the wrist joint is maintained in the monitoring process, pipeline bending is reduced, one more body position adjustment and one more puncture needle fixation are reduced in the monitoring process, and interference with blood pressure monitoring and operations is reduced. The arm plate is provided with a detachable compression block, after sufficient gas is filled when radial artery pressure measuring is completed, a compression air bag and the compression block are matched so that a compression puncture point with proper pressure can be provided, personnel waste is reduced, the pressure is more stable and suitable, air bag soft compression can be achieved, the pressure is even, bruising can be avoided, the compression effect is better, cross infection caused by repeated usage is avoided, the applied range is wide, and safety and reliability are achieved.

The invention mainly relates to an artery puncture fixing device. The fixing device comprises an arm support plate and a fixing liner, wherein the arm support plate has an arc-shaped structure which adapts to the arm of a person; the arm support plate is formed by sleeving an arc-shaped hard plate, a sponge lining and an all-cotton surface layer in sequence from inside to outside; one side of the all-cotton surface layer is connected with a fixing belt; a nylon buckle is arranged at the tail end of the fixing belt; the fixing liner has an elastic cylindrical structure; the fixing liner is arranged on one side of a puncture needle on the arm, and is fixed by winding the fixing belt on the arm. The device adapts to the arm position of a human body, so that high comfort is achieved; the cylindrical fixing liner is arranged beside the puncture needle, so that the fixing belt can be prevented from touching the puncture needle when being wound on the arm, the puncture needle can be fixed firmly, skin of a patient is protected from being injured when the patient twists and bends the wrist, and high comfort and safety are realized. The artery puncture fixing device is simple in structure, is reasonable in design, and is suitable for popularizing and applying.

The name of the invention is an intelligent radial artery hemostat which relates to the technical field of medical appliances and is mainly used for compression hemostasis after a radial artery puncture intubation operation. The solution scheme of the invention is to provide a full-automatic intelligent air-bag compression hemostasis device which can realize automatic air inflation of an air bag, can detect a blood pressure and a pulse of a radial artery by the air bag, can monitor the blood pressure and the pulse, and can give a most suitable air pressure to realize a compression hemostasis function of the radial artery and realize healing of a punctured wound of the radial artery which can satisfy physiological requirements in a minimally invasive technology. The technical scheme provided by the invention is constituted of two components including an air-bag wrist strap and an intelligent air inflation machine, wherein the air-bag wrist strap is made through sewing of a suede face and a cloth lining, the two air bags are disposed in an interlayer located at the middle position, and the air bag corresponding to the radial artery is a dual-chamber air bag; and the wrist strap is fixed by a nylon bucket; the intelligent air inflation machine has a similar appearance with a television remote control, the internal structure of the intelligent air inflation machine is similar with the structure of an electronic sphygmomanometer, and processes such as a compression hemostasis period, a monitoring and hemostasis period and a subsequent compression period are expanded to control processes, so that the intelligent air inflation machine is equipped with a function to simultaneously complete the monitoring of the blood pressure and the pulse and complete the air pressure hemostasis.

The invention provides an improved sheathing canal for radial artery puncture. The sheathing canal comprises an outer sheath and an inner sheath which are in sleeve connection. An outer hole is formedin the side wall of the outer sheath. Each of the outer sheath and the inner sheath includes a first end and a second end which are opposite to each other. The inner sheath comprises a canal body, anair bag, an inflation channel, an inner hole and a guide wire channel. The inflation channel is connected to the air bag, and the inflation channel extends along the canal body to the second end. Theinner hole is communicated with the guide wire channel, and the guide wire channel extends to the first end along the canal body. The inflation channel and the guide wire channel are not communicatedto each other. The first end of the inner sheath is additionally provided with the air bag. Due to the fact that the surface of the air bag is more flexible, the vascular damage of a patient is less.The bulging air bag is arranged on the circumference of the wall of the inner sheath, and the end of the inner sheath can be fixed in the center of the air bag to isolate the inner sheath from the vessel wall. In addition, the air bag is elastic, and the diameter can be changed by inflation or water injection, so that the degree of expansion of the vessel wall can be flexibly determined.

The invention belongs to the technical field of medical devices, and specifically relates to a radial artery puncture retainer, including an arm support plate. The arm support plate is removably connected with an arc support frame. The arc support frame comprises an arc plate and a pair of guiding barrels fixedly connected to the arc plate. The guiding barrels are slidably connected with fixing sliding columns, and the arc plate is rotatably connected with a power fixing worm which allows the fixing sliding columns to slide in the guiding barrels. The fixing sliding columns are equipped with apress plate, and the fixing sliding columns can drive the press plate to rotate on the fixing sliding columns when sliding on the guiding barrels. The arc plate is rotatably connected with an activecontrol worm controlling the press plate to rotate on the fixing sliding column. The arc plate is rotatably connected with a first transmission worm which controls the sliding distance of the fixing sliding columns in the guiding barrels. The arc support frame can be removed from the arm support plate thereby being conveniently to remove after puncture of a patient; and when the fixing sliding columns drive the press plate to fix an arm, the press plate can automatically adjust the angle, and thus arms of different patients can be fixed conveniently.

The invention relates to a femoral artery puncture point visual pressure-adjustable compression hemostasis device which comprises a device body and a fixing bandage, and the fixing bandage is arranged on the device body; the structure of an existing femoral artery puncture point visual pressure-adjustable compression hemostasis device is improved, the improved compression hemostasis device can visually observe the health condition of the skin around the penetrating compression position, meanwhile, the compression force of the compression hemostasis device on the puncture point can be conveniently changed through the pressure intensity adjustable effect, and the compression hemostasis effect of the compression hemostasis device on the puncture point is improved. In this way, it can be guaranteed that hemostasis is conducted efficiently, and meanwhile excessive compression on the body can be avoided.

The invention relates to medical facilities for intensive care, in particular to a percutaneous artery implantation catheter device. The percutaneous artery implantation catheter device comprises a main catheter implanted into arteries of four limbs, wherein the main catheter is provided with first three-way valve connecting branch catheters, the branch catheters are implanted into the arteries ofthe limbs at the far ends of limb artery puncture points, and control parts are arranged at the upstream portion of the main catheter, the downstream portions of the branch catheters and the branch catheters. The problem can be effectively solved that when the percutaneous artery catheter is implanted, limb necrosis is caused by insufficient blood supply of far-end limbs, and meanwhile first-aidmedicine delivery and invasive hemodynamic determination are facilitated.