103 results about "Deep vein" patented technology

A deep vein intravenous introducer has a wheel located toward the front end of the device that can be rotated by the index finger of the user. After placement of the needle in the lumen of the vessel, the user rotates the wheel, which turns a drive wheel. The drive wheel has an outer surface that advances the guide wire through the center of the needle and into the patient. Once the guide wire is advanced into the vessel lumen the catheter can be advanced over the guide wire with a hub or finger tab on the catheter close to the index finger. The operation can be performed by one hand without moving the hand from its initial position.

The invention discloses an automatic segmentation method and system for lower limb deep venous thrombosis based on deep learning. The method comprises the following steps: using the depth learning method for detecting and positioning a thrombotic focus area of a CE-MRI image to obtain an image containing a thrombotic focus; And carrying out thrombus focus segmentation on the image containing the thrombus focus by adopting a deep learning method. According to the invention, the CE-MRI image and the deep learning technology are combined to be applied to automatic thrombus segmentation of deep vein thrombus, a thrombus focus is automatically segmented through two times of deep learning, manual participation of a doctor is not needed, the burden of the doctor is reduced, efficiency is higher,objectivity and accuracy are better, and the consistency and repeatability of a segmentation result are better. The method can be widely applied to the field of medical image processing.

The invention provides a lower limb deep venous thrombus magnetic resonance imaging method and device. On the premise that no contrast media are used, injuries to a patient are avoided, and meanwhile the imaging effect is improved. The method includes the steps that blood flow signals of lower limb deep veins are suppressed, blood vessel wall and thrombus signals of the lower limb deep veins are retained, and preprocessed signals of the lower limb deep veins are obtained; the preprocessed signals of the lower limb deep veins are sampled through a variable-turning-angle spin echo sequence or a fast small-angle gradient echo sequence; according to sampled data, a lower limb deep venous thrombus magnetic resonance image is acquired. By means of the technical scheme, on one hand, blood vessel walls, blood flow and thrombi of the lower limb deep veins can be accurately differentiated, and whether thrombi exist in blood vessels or not can be visually displayed; on the other hand, the lower limb deep venous thrombus magnetic resonance image obtained through the method and device can display whether thrombi exist in the lower limb deep veins or not and the distribution positions of the thrombi, the thrombi can be preliminarily staged, and practical and effective information is provided for clinical treatment.

A method of treating venous insufficiency and lymphedema in an individual by placing pulsatile, localized pressure or compression on deep veins and subcutaneous tissue by inflating and deflating volume-changing members implanted within the individual. A method of potentiating venous circulation, by placing pulsatile, localized pressure that compresses the deep veins by expanding and contracting volume-changing members located between the fascia and muscular compartment, such that the increase in volume from the volume-changing members is transferred to deep veins, and augmenting the effects of muscle contractions around the deep veins and improving blood circulation. A method of potentiating lymphatic circulation. A method of potentiating venous and lymphatic circulation. A pulsatile pressure implant including at least one volume-changing member in electronic connection with an electronic-controlled microprocessor.

The invention provides a portable pneumatic massager capable of resisting deep venous thrombosis of lower limbs, and relates to the technical field of rehabilitation instruments. The portable pneumatic massager capable of resisting deep venous thrombosis of the lower limbs comprises two sleeve cylinders which are bilaterally symmetrical, wherein a circle is slidably connected with and arranged ineach sleeve cylinder; an air bag is placed in each circle; sliding blocks are slidably connected with and arranged in each circle; an extrusion rod is fixedly connected with and arranged in each sliding block through a first spring; and a rolling ball is connected with and arranged at one side, close to the center of a circle, of each extrusion rod in a rolling mode. The portable pneumatic massager capable of resisting the deep venous thrombosis of the lower limbs has the following advantages: the effect of improving the hysteresis of a venous blood flow is achieved; the formation of the deepvenous thrombosis is prevented; the portable pneumatic massager can be applicable to patients with different leg sizes; the effect of relieving a deep venous blood flow is improved; the production cost of the massager is reduced; meanwhile, the portable pneumatic massager is small in size and light in weight; and the portable pneumatic massager is convenient to carry by adoption of the combined design of the sleeve cylinders and a treading seat.

The invention relates to the technical field of medical appliances, in particular to a support type artificial venous blood vessel with valve for treating venous reflux diseases and venous return obstruction diseases. The artificial venous blood vessel comprises artificial valve (1) inside the artificial blood vessel, a metal support (2) attached to the outer wall of the artificial blood vessel to support the artificial blood vessel, a metal ring (3) attached to the metal support to support the valve and an artificial blood vessel (4) beyond the range of the support. The artificial venous blood vessel is produced according to the normal vessel valve structure of the human body, the vessel valve can be opened and closed freely, the supporting strength of the support is proper, and the supporting metal ring can maintain the normal state of the vessel valve. The artificial venous blood vessel has the advantages of reasonable structure, low fabrication cost and good histocompatibility, and can be used for valve repair operation for lower limb deep vein, valve repair operation for upper limb deep vein and main vein return obstruction disease of four limbs (especially occlusive diseases) After the vein of the pathologic section is resected, the support type artificial venous blood vessel with the valve is stitched on the normal vein, the operation is simple, and the operative wound is small.

An apparatus is provided which allows a subject to determine by himself / herself whether or not he / she has a status apt to develop a deep-vein thrombosis in a region of lower limb in a simple manner. A subject is instructed to change his / her body orientation from one to another so as to apply a load to muscles in the lower limb region and thereby to force the blood having stored in the lower limb deep-vein to be circulated entirely across the body by a muscular pumping action. By measuring the bioelectric impedance at this time, a transfer of body fluid (blood) within the body can be captured. A motion for changing the posture includes a bending and stretching exercise, a bending and stretching in knees in a seated position and a repeating of standing-up and sitting-down motion, and a variation between the bioelectric impedance values measured respectively before and after such a posture change is compared with a reference value. Alternatively, a blood storage capacity of the lower limb region may be estimated from a gradient of bioelectric impedance represented by a variation thereof per unit time so as to determine whether or not the subject has the status apt to develop the deep-vein thrombosis in the lower limb region.

A deep vein intravenous introducer has a wheel located toward the front end of the device that can be rotated by the index finger of the user. After placement of the needle in the lumen of the vessel, the user rotates the wheel, which advances the wire guide through the center of the needle and into the patient. Once the guide wire is advanced into the vessel lumen the catheter can be advanced over the guide wire with a hub or finger tab on the catheter close to the index finger. The operation can be performed by one hand without moving the hand from its initial position. The user can then simultaneously use the other hand to operate an ultrasound detection device during insertion without the assistance of another person. A catheter is provided that can be visualized by ultrasound to enable confirmation of correct placement in a vessel. A probe cover is provided that is pre-sterilized and packaged in a cardboard with the top sides of the cover folded down over the cardboard. The cover is placed over the probe end, the sides of the cover are folded up, and the cardboard is removed. The sterile probe cover can be quickly and efficiently placed over the ultrasound's transducer end. Finally, a kit is provided that contains all of the medical devices needed to perform cannulation.

The invention relates to a system for measuring the conduction time of pulse waves between cerebral arteries and cerebral veins. The system comprises a signal acquisition device, a signal processing device and a display device, wherein the signal acquisition device is connected with the signal processing device through a communication interface module; and the output end of the signal processing device is connected with the display device. The cerebral blood flow signal acquisition method comprises the following steps: 1) arranging a fixed probe device with two cerebral blood flow signal acquisition devices; 2) synchronously acquiring cerebral blood flow signals; and 3) exchanging the positions of the two cerebral blood flow signal acquisition devices. The medicinal uses of the system are as follows: 1) synchronously acquiring the cerebral blood flow signals of ipsilateral encephalic large arteries (aorta) and encephalic deep veins of a person to be tested at a resting state; and 2) measuring the time difference of the two cerebral blood flow signals. Through the system provided by the invention, noninvasive detection is realized on the conduction time of pulse waves between the cerebral arteries and the cerebral veins; and the clinical practicality is strong, the stiffness of cerebral arteriolae can be accurately and directly reflected, and the risk of apoplexy is estimated, thus being beneficial for early discovering and preventing cerebral arteriosclerosis of patients.

A method for creating the animal model of the thrombosis in deep vein of limb without wound includes such steps as reforming the intramedullary nail driving-pulling tool to obtain a quantitative beater, and simulating the surgical wounding procedure to generate different wounds on lower limb of rabbit, resulting in thrombosis in deep vein. Its advantages are simple method and low dead rate.

The invention relates to a deep vein puncture device, comprising internal needle and sheath. It is characterized in that: the tip end of internal needle is nib, there is side pore and inactive separated vessel wall, the external diameter of internal needle is small, about 0. 1-0. 5 mm (when the external diameter is 0. 5mm, the cross-sectional area is 14. 8% of that of normal 18 G deep vein puncture needle, and the blood amount is 2. 19% of that of normal 18 G puncture needle at the same time), so the injury is greatly reduced; the sheath is shorter than internal needle, and is equipped with conical tip and side pore. When the tip end of internal needle punctures into deep vein, the sheath can be conveyed to vein along internal needle, the steel silk is conveyed to deep vein through sheath cavity and side pore. the invention is characterized by simple, accurate and safe operation. The outer wall of internal needle and sheath are equipped with scale, which is helpful to determine the needle depth, and are also equipped with end that connects injector.

The present invention is one kind of propyl gallate injection for treating cerebral thrombus, coronary heart disease and thrombotic deep phlebitis as surgical operation complication. The injection contains propyl gallate, medicinal supplementary material and injection water, and may be prepared into different injection preparation of different capacity. The present invention has low cost, high safety and other advantages.

The invention relates to a deep-vein thrombus-prevention massaging instrument. The deep-vein thrombus-prevention massaging instrument is characterized by comprising a host, a multi-cavity airbag and agas connecting pipe, wherein a control circuit, an input module, an output module, a power supply module, an air pump and an electromagnetic valve group are arranged in the host; the input module, the output module, the power supply module, the air pump and the electromagnetic valve group are connected with the control circuit; and the host is provided with an indication lamp, a touch display device, an air guiding pipe socket, an external power supply plug and a power supply switch; and the air pump is connected with the multi-cavity inflation airbag through the electromagnetic valve group,and each airbag is connected with an electromagnetic valve. A gas pressure sensor is mounted on the control circuit, and a pressure value collected by the gas pressure sensor is corrected, so that theaccurate maintenance problem of a pressure numerical value is solved; working modes are selected according to the requirements, so that the requests of different patients on the treatment modes are solved; by utilizing a touch control manner, the operation is relatively simple and convenient; by utilizing a tearing design, the multi-cavity airbags can be conveniently fixed to limbs of a patient;and the deep-vein thrombus-prevention massaging instrument is small in volume, convenient to carry and low in cost.

The invention relates to an intermittent air pressure treatment system having a blood backflow detection function. The intermittent air pressure treatment system includes a host, a detection sensor, connection pipes, and a limb pressure sleeve; the detection sensor is a pressure sensor; the host includes a processing system, an air pump, an air channel switching block, and solenoid valves; the processing system includes a blood backflow detection system and a pneumatic pressurizing system; the blood backflow detection system calculates the maximum lower limb vein blood drainage time and the maximum lower limb vein blood full time according to data fed back by the pressure sensor. Accurate control of the air pump and the solenoid valves can be achieved by real-time detection of the condition of a patient and data accurate calculation, the efficiency of blood backflow is maximized, and deep vein thrombi can be prevented. The intermittent air pressure treatment system is light and small,is easy to operate, can adapt to complex changeable medical environments, and has good market prospect.

An intravascular thrombus retraction device and method utilizing wires compressible into a compact form within a catheter and are self-expandable into a wire mesh web with fluid-penetrable openings in the wire mesh small enough to filter clot particles. A base of the wire mesh web is connected to a radially ring-shaped structure supporting and maintaining an opening in the base of the wire mesh and forming a thrombus capture volume. The ring-shaped structure is compressible into the catheter and is self-expandable when free of compressive forces within the catheter to open up into the open, expanded ring-shaped structure, maintaining the opening in the opening in the base of the wire mesh.

An illumination device that has an orange light, with LEDs having a wavelength in the range of 580-620 nm, and / or a red light with LEDs having a wavelength of light in the range of 620-650 nm for side-transillumination of the veins. Orange light has been found to be beneficial for transillumination of superficial veins, while red light has been found to be beneficial for transillumination of deeper veins. In addition, the device has white light which is used for illumination of the surface of the skin. The illumination device contains a manual or automatic switch or switching mechanism that allows the user to easily switch between the orange light / red light and the white exam light by simply pressing a button or moving the device.

The invention discloses a compound as well as a preparation method, a preparation and application thereof. The compound has the following structure shown in the specification, wherein X is hydrogen; R is other compound residues. The preparation method comprises the following steps: taking 2-chloro-4-hydroxybenzaldehyde or 2-bromo-4-hydroxybenzaldehyde as raw materials, performing Schmidt reaction with tetraacetylglucose trichloroacetimidate and then reacting with NaBH4 or DAST to obtain a target compound. The preparation is a tablet, a capsule, an injection or a freeze-dried powder injection prepared by adding pharmaceutically-acceptable excipients in the compound. The application is application of the compound to the preparation of an anticoagulant drug. The compound disclosed by the invention has an obvious anticoagulant effect and can be taken as a potential lead compound to be applied to the preparation of the drug for treating deep vein thrombus, pulmonary thromboembolism, cardiovascular and cerebrovascular diseases, stroke and other diseases related to blood coagulation; the preparation method is simple and easy to implement, good in repeatability and less in environmental pollution, and can be used for the preparation of a large amount of compounds.

The invention discloses a fastening alternating type massager for preventing deep venous thrombosis of lower limbs. The massager comprises oblique flexible bearing, lifting and packaging apparatus, adjustable attaching type elastic tightening apparatuses, and air-pushing alternating type inverse piezoelectric micro-vibration massage apparatus, wherein the adjustable attaching type elastic tightening apparatuses and the air-pushing alternating type inverse piezoelectric micro-vibration massage apparatus are arranged in the oblique flexible bearing, lifting and packaging apparatus, and the adjustable attaching type elastic tightening apparatuses are arranged on two opposite sides of the air-pushing alternating type inverse piezoelectric micro-vibration massage apparatus. The invention belongs to the technical field of medical prevention exercise apparatuses, and particularly relates to the fastening alternating type massager for preventing deep venous thrombosis of lower limbs, which canbe suitable for users with different leg thicknesses, improves the effect of relieving deep venous blood flow, provides massage services with different massage strengths for the users, and lifts andtightens the lower limbs.

In order to puncture the artery running in parallel to the deep vein, a method or a tool for selectively visualizing the artery in a near-infrared image so as to form a near-infrared image of a portion to be punctured is provided. In the method for visualizing the artery by forming a near-infrared image of a portion of the artery to be punctured, the surface of the skin to be punctured is pressurized with a near-infrared light transparent material so as to collapse the deep vein running in parallel to the artery as well as the subcutaneous vein. An auxiliary tool for selectively visualizing the artery preferred for this pressurization is formed from a near-infrared light transparent material and has a notch through which a puncture needle can pass.

The invention discloses a puncture device for deep vein catheterization, which comprises a puncture fixing device and a puncture needle. Needle, the bottom end of the syringe connector is located on the outer wall of the puncture needle and is sleeved with a push block, through the puncture fixing device, it is convenient for the doctor to use the puncture to puncture the patient, and the angle of the puncture needle can be adjusted by adjusting the angle of the puncture fixing device , so as to ensure the puncture angle of the puncture needle when using the subclavian vein puncture method and the internal jugular vein puncture method, and avoid accidentally injuring other blood vessels of the patient when the puncture needle is used for puncture. It can control the penetration speed of the puncture needle, and can also control the puncture needle to complete the needle return, which reduces the labor intensity of the doctor and makes the puncture go smoothly.

In order to inhibit thrombotic processes locally rather than systemically, higher levels of antithrombotic drugs in the deep veins of the legs than in the systemic circulation are obtained using devices and methods that provide venous cannulation in the dorsum of the foot of a patient while applying pressure to the foot proximal to the venous cannulation, potentially as far up the leg as the knee, in an amount sufficient to compress the superficial veins and divert the venous drainage in the deep venous system into the venous plexus.

The invention discloses a deep venous embolism prevention and treatment apparatus and belongs to the medical equipment field. The apparatus includes a control device and a treatment device; the control device and the treatment device are connected through a connecting component; the treatment device wraps an affected area; the treatment device comprises a fixing area and a treatment area; one or a plurality of air chambers are arranged between the outer layer and inner layer of the treatment area; a plurality of optical light-emitting heads are embedded in each air chamber; conductive rubber is pressed on one side of the treatment area which faces the affected area; one side of the inner layer of the treatment area, which faces the affected area, is provided with windows matched with the optical light-emitting heads; and the inner layer of the treatment area includes a full-transparent silica gel layer. With the deep venous embolism prevention and treatment apparatus of the invention adopted, three kinds of deep vein embolism prevention and treatment methods can be adopted to perform simultaneous treatment, and therefore, time can be saved for doctors and patients, and treatment effects are better.

The invention relates to a deep-venous-thrombosis magnetic resonance imaging method and device, a medium and computer equipment. The method includes the steps that blood flow signals of deep veins areinhibited, and preprocessing signals comprising deep-vein vessel wall signals and thrombosis signals are obtained; the preprocessing signals are sampled with water-excitation-pulse three-dimensionalgradient echo sequences; according to the sampled data, a deep-venous-thrombosis magnetic resonance image is obtained. According to the deep-venous-thrombosis magnetic resonance imaging method and device, the medium and the computer equipment, the preprocessing signals are sampled with the three-dimensional gradient echo sequences, and the sampling period can be effectively shortened; the samplingsequences are excited with the water-excitation pulses, fat signal inhibition is achieved while imaging signals can be excited, artifacts generated by uneven fat inhibition are reduced, and thereforethe accuracy of thrombosis detection is improved.

The invention provides an endovenous laser treatment system for varicose veins of lower limbs, and is characterized in that: the system comprises a lead-in device and a conveyer device, wherein the conveyer device comprises a double-cavity conveying duct, a lead-in guide wire and a laser fiber; and the lead-in guide wire and the laser fiber are arranged in the two cavities of the double-cavity conveying duct respectively. By the endovenous laser treatment system, the dangers that the fiber is mistakenly guided into deep veins of lower limbs, and then deep-vein thrombosis is formed can be avoided.

The invention is concerned with biology structure process technology field. At present, the foreign research of tissue-engineered venous valvular is on the primary phase, and some problems is not clear and needs to be solved, such as the selection of cell and bracket, growth and adhering of cell and inner process of body. The aim of this invention is to afford tissue-engineered venous valvular replanting substance and the replanting substance is made up of seed cell and bracket. The said seed cell ismultipotent adult progenitor cells (MAPC) andendothelial progenitor cells (EPC), and the said bracket is homogeneity variant acellularized venous with valvular. It also affords the production method of the said tissue-engineered venous valvular. This material is fit for repairing the insufficiency tissue-engineered venous valvular to the deep vein imaging of lower extremity with wide source and without the problem of immunogenicity and ethic. The invention has excellent function and effect on animals.

A deep vein intravenous introducer has a wheel located toward the front end of the device that can be rotated by the index finger of the user. After placement of the needle in the lumen of the vessel, the user rotates the wheel, which advances the wire guide through the center of the needle and into the patient. Once the guide wire is advanced into the vessel lumen the catheter can be advanced over the guide wire with a hub or finger tab on the catheter close to the index finger. The operation can be performed by one hand without moving the hand from its initial position. The user can then simultaneously use the other hand to operate an ultrasound detection device during insertion without the assistance of another person. A catheter is provided that can be visualized by ultrasound to enable confirmation of correct placement in a vessel. A probe cover is provided that is pre-sterilized and packaged in a cardboard with the top sides of the cover folded down over the cardboard. The cover is placed over the probe end, the sides of the cover are folded up, and the cardboard is removed. The sterile probe cover can be quickly and efficiently placed over the ultrasound's transducer end. Finally, a kit is provided that contains all of the medical devices needed to perform cannulation.

The invention relates to the technical field of puncture needle supports, in particular to an adjusting and fixing support for for a deep vein puncture needle for anesthesia. The adjusting and fixing support comprises a rectangular frame, two U-shaped frames are symmetrically fixed to the two sides of the rectangular frame, binding belts are bound and fixed to the interiors of the two U-shaped frames, and transverse tensioning mechanisms used for tensioning the skin are arranged on the two sides of the rectangular frame. Two supporting rods are symmetrically and rotationally connected to the top face of the rectangular frame, guide rail holes are formed in the supporting rods, semicircular guide rail rings are inserted into the guide rail holes, the two ends of each guide rail ring are fixed to the top face of the rectangular frame, and elastic positioning mechanisms used for temporarily fixing the supporting rods to the guide rail rings are arranged in the supporting rods. According to the scheme, the skin at the puncture position is tensioned through the transverse tensioning mechanism, so that the loose skin is tightened, a doctor can see the meridians at the puncture position clearly, puncture is facilitated, the needle tube is clamped and fixed stably, the needle tube does not need to be held manually, and puncture operation is facilitated.

A method for creating the animal model of traumatic deep venous thrombosis in limbs features that the intramedullary nail driver is reformed to become a quantitative beater and said beater is used to beat the near ends of lower limbs of rat to obtain said animal model.