72 results about "Arteria femoralis" patented technology

Methods and apparatus are provided for treating congestive heart failure using a catheter having an inlet end configured for placement in the source of arterial blood such as the aorta, left ventricle or a femoral artery, and an outlet end having at least one conduit configured to be placed in the renal arteries. The catheter includes a lumen through which blood passes from the aorta or left ventricle directly to the renal artery, means for engaging the first conduit with renal artery. The means for engaging also may reduce backflow of blood into the abdominal aorta. The catheter preferably is configured to permit percutaneous, transluminal implantation. Methods of using and implanting the catheter are also provided.

A system for delivering a renal treatment and a peripheral treatment includes a renal catheter, a peripheral catheter, and an introducer sheath having first and second lumens. The first lumen is configured to receive the renal catheter and is sized to extend from a patient insertion site to a femoral or iliac artery location near or distal to a patient aortic branch. The second lumen is configured to receive the peripheral catheter and is sized to extend from the patient insertion site to an opposite femoral or iliac artery location near or distal to the patient aortic branch. A method of delivering a renal treatment and a peripheral treatment includes positioning an introducer sheath in an iliac artery, advancing a renal catheter and a peripheral catheter through the introducer sheath, where the renal catheter is separated from the peripheral catheter within the introducer sheath by a flap.

The invention relates to a body anti-corrosive preservation solution. The raw materials in percentage by weight of the preservation solution are: 10 to 40 percent of glycerol, 10 to 70 percent of ethanol, 1 to 20 percent of metacetonic acid, 0.1 to 20 percent of hexamethylene tetramine, 0.2 to 10 percent of 5-chloro-2-methyl-4-isothiazoline-3-ketone, 0.1 to 1 percent of peppermint oil and the balance being water. The application mode of the preservation solution comprises the following steps: the anti-corrosive preservation solution is injected into the digestive system of a body from the oral cavity or the nose and the throat of the body; the anti-corrosive preservation solution is injected through an aortic arch, a brachial artery or a femoral artery; and the anti-corrosive preservation solution can also be used to wipe the surface of a body by a tampon dipped in the preservation solution. The body anti-corrosive preservation solution is nontoxic and harmless to an operator and is easy to operate; moreover, the preservation solution has no influence on the environment and excellent anti-corrosive effects, and can ensure that a body maintains a natural state and softness in a natural state (at room temperature) for 5 to 12 days. In addition, the preservation solution can be used repeatedly and has a simple preparing method, easily obtained raw materials and strong maneuverability; moreover, the preservation solution has convenient practical application and is propitious to popularize and use.

Methods for introducing recombinant adeno-associated virus (rAAV) virions into the liver of a mammal are provided. In these methods, the liver is partially or completely isolated from its blood supply, a catheter is introduced into the liver via a peripheral blood vessel, and rAAV virions are then infused through the catheter to the liver. The methods described herein may be used, for example, to deliver heterologous genes encoding therapeutic proteins to the hepatocytes of humans. This can be accomplished, for example, by introducing the catheter into a femoral artery, threading the catheter into the hepatic artery, and infusing rAAV virions through the catheter and into the liver. Exemplary examples of heterologous genes include those coding for blood coagulation factors.

The invention belongs to the technical field of a medical treatment apparatus, and particularly relates to an interventional therapy arteria femoralis hemostasis device. Specific to the problems of inconvenient movement, poor fixing property, and inconvenience of changing drugs and cleaning wounds for patients at present, the following scheme is presented; the interventional therapy arteria femoralis hemostasis device comprises two symmetrical arc connecting belts; a zipper is connected to the middle of two connecting belts, and two connecting belts are sewed and connected with the zipper; the connecting belts are hollow structures, air sacs are installed at the inner parts of the connecting belts; the air sacs are connected with air inlet pipes, and one end of each air inlet pipe extends to the outer parts of the connecting belts; valves are installed on the air inlet pipes, distant sides of two connecting belts are sewed and connected with elastic belts with wide faces; a fixing plate is connected to the middle of two elastic belts, and the middle of the side wall of the fixing plate is connected with a sleeve cylinder; a rotating pillar is in threaded connection to inside of the sleeve cylinder. The interventional therapy arteria femoralis hemostasis device can facilitate medical workers to change drugs and clean wounds for patients; the fixing effect is good, and patients are convenient to move; moreover, the device is not easy to drop off.

The invention relates to the field of medical instruments and provides a valve conveying system for implanting a valve from apex cordis. The valve conveying system comprises a controlling unit and a conveying unit which are connected, wherein the valve is loaded on the conveying unit which is used for conveying, releasing and recovering the valve, and the controlling unit is used for controlling the conveying, the releasing and the recovering of the valve. The valve conveying system for implanting the valve from the apex cordis can implant a self-expandable asymmetrical valve from the apex cordis into the sickness position through an interventional method under the condition of minimal incision, so that the shortcoming that the existing conveying system cannot implant the asymmetrical valve from the apex cordis is overcome. In the aspect of controllability, the valve conveying system for implanting the valve from the apex cordis is superior to the existing system for implanting the valve from the arteria femoralis, and the self-expandable asymmetrical valve is superior to a saccule expanding valve, wherein, the position of the saccule expanding valve cannot be adjusted after the saccule expanding valve is released.

A system and accompanying methods for treating a blockage of the superior femoral artery including utilization of a puncture insertion mechanism, an introducer sheath, a guide catheter and an expandable device. Entry into the body is established through the popliteal and advancing retrograde through the popliteal artery toward the lower superior femoral artery region and in some embodiments utilizing an introducer sheath, a guide catheter and a balloon are featured.

The device (1) is intended to be positioned in a sealed introducer placed in a femoral vein in order to penetrate the left atrium (4) of the heart (3) by passing through the septal wall (5) thereof. The device comprises an assembly for cooperating with a handle under the control of control means for actuation of the assembly, for placing and fixing a reinforcement ring (7) on the mitral valve (2), said assembly being arranged at the end of a manipulation rod (6) and comprising: a bearing member (8) comprising a plurality of arms (8a) connected pivotably to the end of the rod (6) so as to change, under the action of the control means, from a position folded along the rod (6) to a deployed position spaced apart from the rod (6), in order to bear under the mitral valve (2) in a manner uniformly distributed along the periphery of the mitral valve; a counter-bearing member (12) comprising a plurality of arms (12a), at the free end of which arms (12a) the reinforcement ring (7) is arranged, the arms (12a) are connected pivotably to a support (13) disposed coaxially with respect to the rod (6) in such a way as to change, under the action of the control means, from a position folded along the rod (6) to a deployed position spaced apart from the rod (6), in order to realize the counter-bearing on the mitral valve and to position the reinforcement ring (7); means for removing sutures for fixing the reinforcement ring (7) to the mitral valve.

The invention belongs to the technical field of medical materials, and particularly relates to alkyl chitosan-graphene oxide composite sponge and a preparation method and application thereof. The composite sponge comprises alkyl chitosan and graphene oxide adsorbed on alkyl chitosan, and adsorption capacity of graphene oxide is 3-28%. The composite sponge obtained by taking alkyl chitosan as a matrix and compositing graphene oxide and alkyl chitosan has excellent hemostatic performance and blood absorbing capacity. Embodiment results show that when the composite sponge is used for hemostasis,in-vitro whole blood coagulation time is less than 58s, hemostasis time of a rabbit femoral artery bleeding model is less than 155s, bleeding amount is less than 5.4g, and hemostasis effect is betterthan pure alkyl chitosan sponge or graphene oxide powder.

The invention relates to the field of medical apparatuses, and discloses an automatic compression hemostat for the arteria femoralis. The automatic compression hemostat comprises a shell, a compression pad, an adjusting rod, blood pressure sensors, a pressure sensor, a controller and a driving device. The blood pressure sensors, the pressure sensor and the driving device are electrically connectedto the controller. The blood pressure sensors are arranged at one side of the shell. The adjusting rod is slidably arranged at the shell, and the compression pad is arranged at one end of the adjusting rod so that the compression pad can follow the adjusting rod to move away from or close to the side, provided with the blood pressure sensors, of the shell. The driving device cooperates with the adjusting rod to be arranged at the shell. The pressure sensor cooperates with the adjusting rod. During use, the automatic compression hemostat for the arteria femoralis is fixed to puncture points ofthe arteria femoralis, so that the compression pad is arranged outside the puncture points. The blood pressure sensors can detect the current blood pressure value of a patient, and the controller controls the driving device according to blood pressure, so that the compression strength is suitable.

A Retrograde Entry Antegrade Placement (REAP) method and apparatus facilitate the antegrade (i.e., in the direction of blood flow) placement of endovascular devices for treatment of lower extremity arterial disease. Initially, a retrograde entry is made into the arterial system of a patient at an entry point with a curved needle, which then exits at an exit point proximal to the entry point, with a first wire then passed through the lumen of the curved needle. From the skin exit point, a Dual-Lumen Access Director (DAD) device is advanced in the antegrade direction down the first wire in a first lumen and enters the CFA 1 lumen. A second wire is passed down a second lumen in the DAD device and follows the SFA lumen in the antegrade direction. The DAD device is removed, and a standard dilator sheath is inserted over the second wire and the endovascular treatment begins.

The invention relates to the field of animal models for basic scientific research, in particular to a construction method of a sepsis composite animal model, and the construction method comprises femoral artery intubation and cecum ligation puncture. The femoral artery intubation and cecum ligation puncture are combined for the first time to construct the sepsis composite animal model, the sepsiscomposite animal model is successfully applied to pharmacokinetic study of anti-sepsis drugs on model rats, continuous blood sample collection on the same rat can be achieved, the death rate of overall animals is not affected, and the number of experimental animals is greatly reduced. Meanwhile, reliable model animal pharmacokinetic data can be obtained, and important reference significance is achieved for drug research in related fields.

The invention provides an aortic dissection stent graft which comprises a metal stent, wherein a tectorial membrane is attached on the external part of the stent, the aortic dissection stent graft further comprises an artificial blood vessel, a branching vessel is arranged on the wall of the artificial blood vessel, one end of the artificial blood vessel is connected with the tectorial membrane attached on the surface of one end of the stent, and is used for perfusing blood during surgery. The tectorial membrane is attached on the external part of the stent to form a tubular shape. One end of the tubular tectorial membrane is connected with the artificial blood vessel which is further connected with the branching vessel. During surgery, the roots of aortic are cut off, and the stent is implanted at cleavage of an endarterium through a catheter. In addition, blood is perfused into the branching vessel, so that the perfused blood is used for being supplied to tissues of a lower body. By adopting the aortic dissection stent graft, the circulatory arrest time is shortened, the incision of femoral artery is not needed, and the surgery wound can be reduced, the surgery time can be shortened, and the complications caused by the blood retrograde perfusion of the femoral artery can also be avoided.

The invention provides a large-flow two-stage catheter pump for left ventricle assistance and a using method of the large-flow two-stage catheter pump. The large-flow two-stage catheter pump comprises a pump shell, an impeller, a guide vane, a radial fluid director and a motor. One end of the pump shell is a blood pump inlet, is implanted from femoral artery or axillary artery in a minimally invasive mode and is inserted into a left ventricle through an aortic valve, a blood pump outlet is formed in the side face of the pump shell and is communicated with an aorta, a motor is installed in the other end of the pump shell, and a rotor of the motor is connected with a transmission shaft. Two stages of impellers, two stages of guide vanes and a radial fluid director are arranged between an inlet and an outlet of the blood pump; the transmission shaft penetrates through the impeller, the guide vane and a central hole of one radial fluid director, is in transmission connection with the impeller, and is in non-transmission connection with the guide vane and the radial fluid director; power generated by the motor drives the impeller to rotate so that blood can be conveyed to the aorta from the left ventricle, and the left ventricle assisting effect is achieved. The two-stage impeller mode is adopted, so that the working condition requirement of blood pump assistance is met, and the survival rate of assistance is increased.

According to a handle and a conveyor for achieving quick and slow release of an interventional stent, by arranging a screw rod, a screw rod sleeve and a cam ring quick and slow switching mechanism, slow and quick release and convenient switching of the stent can be achieved. No matter which release state the handle is in, a reed of a telescopic tooth plate of the cam ring fast and slow switching mechanism always jacks a tooth plate to the deep arc-shaped groove position or the shallow arc-shaped groove position, so that the tooth plate can switch fast and slow release states only when the cam ring is manually shifted, and the whole handle is safe and reliable to use. A clamping hook and a clamping ring can be separated and unlocked by pressing a button on an arc-shaped clamping sleeve, so that a sheath tube and a guide head can be separated; after the interventional stent is released, the arc-shaped clamping sleeve, the clamping hook and the clamping ring are withdrawn to be hooked and locked again, so that when the whole conveyor is withdrawn, the guide head and the rear release mechanism cannot be separated from the sheath tube, a situation that the rear release mechanism scratches the intima is avoided, and a situation that the sheath tube, the rear release mechanism and the guide head are suddenly changed in size and difficult to operate when being withdrawn from the femoral artery incision in sequence is avoided.

An intracardiac ultrasound catheter or other intravascular imaging tool is provided with an adapter to allow the imaging tool to be used both subcutaneously and supracutaneously, and especially at different stages of a single intravascular procedure. The adapter covers a tip of the imaging tool and preferably includes an echogenic window to facilitate gathering of ultrasound images through this window in the adapter. With the adapter in place, the intracardiac ultrasound can be used supracutaneously, such as at a femoral artery / vein location for imaging to improve vascular access, such as with an appropriate percutaneous needle. The adapter is then removed and the same imaging tool can be inserted percutaneously and intravascularly for use, such as in intracardiac imaging accompanying and intracardiac procedure. The intracardiac ultrasound probe is preferably coupled to an electrophysiology mapping system both when used supracutaneously and when used intravascularly.

A method and apparatus is proposed to estimate the aortic pulse transit time (PTT) from only time intervals measured between fiducial points of the longitudinal balistocardiogram (BCG) without the need to apply any sensor to the area where the arrival of the arterial pulse waveform is to be detected. From the longitudinal BCG of a subject, which can be obtained by means of sensors integrated in a single element with which the subject's body comes into contact, two fiducial points of the BCG waveform are detected in which one of the points is associated with the arrival of the arterial pulse wave to a zone proximal to the heart and the other is associated with the arrival of said arterial pulse wave to a distal zone, respectively. From the time interval between the two points, an estimate of the aortic (carotid-femoral) PTT is provided either directly or through a process of previous calibration.

The present invention provides a package comprising an aortoiliac artery graft and a record of a measured pressurized diameter of the aortoiliac artery graft, which measurement has been determined ex vivo under a pressure. A method of processing an aortoiliac artery graft is also provided. The processing method comprises subjecting an aortoiliac artery to a pressure ex vivo, and determining a measured pressurized diameter of the aortoiliac artery under the pressure. A method of treating abdominal aortic aneurysm, infected aortoiliac endograft or a traumatically damaged abdominal aorta or an iliac artery in a patient is further provided. The treatment method comprises anastomosing a processed aortoiliac artery graft with an aorta of the patient on the proximal end and the iliac or femoral arteries on the distal end, wherein a measured pressurized diameter of the processed aortoiliac artery graft has been determined ex vivo under a pressure.

PCT No. PCT / US96 / 02631 Sec. 371 Date Dec. 29, 1997 Sec. 102(e) Date Dec. 29, 1997 PCT Filed Feb. 27, 1996 PCT Pub. No. WO96 / 26742 PCT Pub. Date Sep. 6, 1996The transgene-inserted replication-deficit adenovirus vector is effectively used in in vivo gene therapy for peripheral vascular disease and heart disease, including myocardial ischemia, by a single intra-femoral artery or intracoronary injection directly conducted deeply in the lumen of the one or both femoral or coronary arteries (or graft vessels) in an amount sufficient for transfecting cells in a desired region.

The invention discloses a reverse vascular sheath. The reverse vascular sheath includes a sheath pipe, an outer sheath connecting body and a ball valve guide reversing device; the outer sheath connecting body is a columnar connector provided with an inner cavity, one end of the outer sheath connecting body is provided with a main guide pipe connecting hole, the other end of the outer sheath connecting body is provided with a sheath pipe connecting hole, and the sheath pipe connecting hole is connected with the sheath pipe; the ball valve guide reversing device includes a front ball valve, a first air pipe, a push rod, a guide pipe and an air source, the first air pipe is arranged in the inner cavity of the push rod, and the front end and rear end of the first air pipe are connected with the front ball valve and the air source respectively; the push rod is arranged in the inner cavity of the sheath pipe, one end of the push rod is connected with the front ball valve, and the other end of the push rod is connected with a sacculus filling hole; the guide pipe is arranged in the inner cavity of the sheath pipe. According to the above technical scheme, since the reverse vascular sheath can complete all kinds of operation in blood vessels only by puncturing arteria femoralis on one side, the surgical operation time can be reduced, incision infection and other complications are reduced, medical expenses are reduced, medical materials are saved and the patients' pain is relieved.

The invention relates to the technical field of the interventional department, and discloses a femoral artery paracentesis postoperation hemostasis nursing bed for the interventional department, the hemostasis nursing bed comprises a side plate, a hemostasis adjusting mechanism is arranged in the side plate, the hemostasis adjusting mechanism comprises a moving assembly, the moving assembly is arranged in the side plate, a telescopic compression assembly for compressing the femoral artery puncture position of a patient is arranged outside the moving assembly, a detection alarm assembly for detecting femoral artery bleeding of the patient is arranged in the telescopic compression assembly, and a timing assembly for controlling the compression force of the telescopic compression assembly is arranged in the telescopic compression assembly; and a triggering strip moves to be in contact with a timing button once every three hours, so that the operation of an electric telescopic rod is shortened by one twelfth of the total travel, the effect of assisting medical staff to automatically adjust the wound compression strength according to the compression time can be achieved, and the possibility that the blood circulation of the patient is not smooth due to long-time high-strength pressing is prevented.

The invention relates to a transradial renal artery ablation guide catheter. The transradial renal artery ablation guide catheter includes a handle, a main catheter section and a control bending catheter. The main catheter section is communicated with the far end of the handle. The control bending catheter is communicated with the far end of the main catheter section. Woven reinforcement threads are arranged in the catheter wall of the main catheter section. Pulling thread cavities are correspondingly formed in the catheter wall of the main catheter section and the catheter wall of the controlbending catheter. An adjusting disc is arranged in the handle. A control rod is connected to the adjusting disc. Pulling threads sliding backwards and forwards are arranged in the pulling thread cavities. The far ends of the pulling threads are fixed to the catheter wall of the control bending catheter, and the near ends of the pulling threads are fixed to the adjusting disc. The control rod controls the adjusting disc to rotationally adjust the pulling threads to extend or contract in order to control the bending shape of the control bending catheter. According to the transradial renal artery ablation guide catheter, the head end of the catheter can control the bending shape, a radiography passage of the renal artery is the radial artery, a traditional arteria femoralis path is avoided,and complications of artery arteriopuncture can be reduced.

The invention relates to an indwelling arteria femoralis puncture sheath and application thereof. The indwelling arteria femoralis puncture sheath comprises a sheathing canal, a silica gel valve base and a protective bag. The sheathing canal is a hollow hose. One end of the sheathing canal is fixed to the silica gel valve base. The other end of the silica gel valve base is connected with the protective bag. A connecting sleeve is arranged at the joint of the sheathing canal and the silica gel valve base. A silica gel valve is arranged at one end of the silica gel valve base. A fixing wing is further arranged in the middle of the connecting sleeve. The fixing wing and the connecting sleeve are integrally formed at a time. The indwelling arteria femoralis puncture sheath further comprises a guide tube, a guide wire and a trocar. The indwelling arteria femoralis puncture sheath has the advantages that the indwelling arteria femoralis puncture sheath is placed into the body when used for the first time, disengagement and pollution can be prevented, and repeated operation can be performed on the artery blood vessel conveniently when endovascular treatment research is performed in the follow-up process; a protective bag is selected to be placed under the skin, positioning is convenient, and medicine is injected; a silica gel valve is selected, can be connected to a treatment tool external and is good in internal sealing performance.

The invention discloses an arteria femoralis constricting hemostat. The arteria femoralis constricting hemostat comprises a base and a support, wherein the support is vertically connected with the base, one end of a cross beam is connected with the upper end of the support, and the other end of the cross beam is connected with a compressor; the support comprises an upper support body and a lower support body, and the upper support body is connected with an adjusting nut connected with the lower support body in a threaded way; the compressor comprises a screw sleeve connected with the cross beam, a screw rod penetrates through the screw sleeve and is connected with the screw sleeve in a threaded way, and the lower end of the screw rod is connected with a compression cushion; a hemostasis piece is arranged below the compression cushion, and an air cushion is arranged below the compression cushion on the base. According to the arteria femoralis constricting hemostat provided by the invention, the height of the compressor can be adjusted to be applicable to patients of different body statuses by the adjusting nut, and the hemostasis piece is arranged below the compression cushion, therefore quick hemostasis can be realized after a wound is contacted, the treatment time can be saved, and the paint of a patient can be alleviated; furthermore, the air cushion is arranged on the base and the upper surface of the base is of a wavy shape, therefore the comfort of the patient can be improved, and the active effects on the prevention of the compression cushion and wound mal-position can be realized.

The invention discloses a human body model applied to ECMO simulation practical training, which comprises a model main body and a simulated heart container arranged on the model main body, the simulated heart container is provided with a main venous canal and an aortic canal, and the model main body is provided with a femoral venous canal, a femoral artery canal, a jugular venous canal and a carotid artery canal. The upper end of the femoral vein tube, the lower end of the jugular vein tube and the main vein tube are connected through a three-way valve, the upper end of the femoral artery tube, the lower end of the carotid artery tube and the aorta tube are connected through a three-way valve, and the upper end of the jugular vein tube, the lower end of the femoral vein tube, the upper end of the carotid artery tube and the lower end of the femoral vein tube are all detachably connected with needle inserting tubes. According to the human body model, students can master clinical operation of ECMO skillfully, and meanwhile, a punctured tube can be replaced conveniently.

The invention discloses a novel femoral artery compressor. The novel femoral artery compressor is mainly formed by combining a compression plate (1), a pressing block (2), bandages (3) and a pressure mechanism (4), the pressing block (2) is arranged on the bottom face of the compression plate (1), the bandages (3) are arranged at the left end and the right end of the compression plate (1), and the pressure mechanism (4) is arranged on the top face of the compression plate (1) and detachably connected with the compression plate (1). The novel femoral artery compressor is simple in structure and high in practicability, when the bleeding amount of a patient is small, the hemostasis effect can be well achieved by direct binding, when the bleeding amount is large, the pressure mechanism can be installed at any time, and a jacking screw is stretched through a motor so as to control the compression force; and compared with manual compression, the compression force is more stable and more durable, the real-time compression force can be detected according to the pressure sensor, the compression force can be reduced in time when the bleeding amount is slowed down, and the comfort of the patient is improved.

The invention discloses a rat femoral artery cannula which comprises an intravascular catheter, a subcutaneous inner catheter and an in-vitro adapter which are communicated in sequence; the intravascular catheter and the subcutaneous catheter are long tubes which are made of hard materials and have smooth surfaces; the outer diameter of the intravascular catheter is matched with the inner diameter of a rat femoral artery blood vessel; the inner diameter of the subcutaneous inner catheter is smaller than the outer diameter of the intravascular catheter and greater than the inner diameter of the intravascular catheter. According to the rat femoral artery cannula, stable retention of the cannula after the cannula operation and stable measurement of continuous blood pressure are achieved, and the influence of deformation of the cannula on blood pressure measurement is reduced.

The invention discloses an alarm device for wound bleeding in a femoral artery interventional operation, which comprises a frame belt, a rotating shaft is arranged in the middle of the lower side of the frame belt, a merging block is arranged on the upper side of the frame belt, an air bag is arranged on the inner side of the frame belt, a cotton patch is arranged on the outer part of the air bag, and the cotton patch is arranged on the lower side of the frame belt. An air pipe is arranged on the outer portion of the front side of the air bag, a vacuum pump is arranged at the tail end of the air pipe, and a switch is arranged on the right side of the vacuum pump. According to the device, the exposed area of a wound is enlarged, the wound can be treated more conveniently, the device can adapt to different thicknesses of limbs of a patient through the air bag, binding operation is more convenient, an operation cotton belt can be rapidly fixed through the frame belt component, operation operation is more convenient, and operation efficiency is improved.