39 results about "Superficial vein" patented technology

A temporary absorbable venous occlusive stent for use in a varicose vein treatment method includes a stent body, a bio-absorbable material associated with the body, and a closure for blocking blood flow past the stent when implanted in a vein. The stent produces localized blood clotting, fibrosis and vein collapse as it is absorbed. A permanent blockage is produced that prevents the undesirable back flow of blood from above the blockage site, thereby reducing distension of a varicose vein below the blockage site.

A light source locating and visualization apparatus comprises one or more than one LEDs capable to radiate a red light source with a wavelength of 600˜650 nm to locate superficial veins or specific structures; and a method of locating superficial veins with a LED light source comprises to proceed a skin-tightly radiating by using the source locating and visualization apparatus to emitting a red LED light source with wavelength of 600˜656 nm; to produce a lateral scattering and illumination effect by way of emitting red LED light source penetrating through a fat structure to cause reflection and scattering; and to locate superficial veins by naked eyes due to said superficial veins capable of absorbing red light spectrum easily and appearing as a located blood vessel shadow under the lateral scattering and illumination effect; therefore, physicians and nurse are capable by naked eyes to see the size, curve, and bifurcation of subcutaneous blood vessels visually and then select an appropriate injection position along the blood vessel for intravenous puncture easily.

The invention discloses a superficial vein enhancement method based on a multi-resolution residual fusion network. The superficial vein enhancement method comprises the following steps: simulating veins by randomly arranged black wires with different thicknesses; simulating different degrees of skin scattering through a frosted acrylic plate, and collecting images under different exposure time asa simulated vein data set; converting the simulated vein data set into a similar living body blood vessel imaging data set through style migration; randomly extracting a part from the quasi-living blood vessel imaging data set as a training set, and training by adopting a multi-resolution residual fusion network to obtain an enhancement model; and enhancing the real vein data by using the enhancement model to obtain a vein enhanced image. According to the invention, by training simulated vein data sets with different illumination conditions and different scattering degrees, an enhancement model with good robustness is obtained; and by fusing the characteristics of different levels in the network, information lost in the down-sampling process is compensated, and a better detail enhancementeffect is achieved compared with other networks.

Systems and methods treat superficial venous malformations, such as spider veins. The systems and methods distribute a light-reactive agent, e.g., verteporfin, at or near an inner wall of a vein. The systems and methods activate the light-reactive agent by applying non-thermal light energy at a wavelength that activates the light-reactive agent to cause localize injury to the inner wall of the vein.

The invention belongs to the technical field of medical apparatuses and instruments, and relates to a near-infrared body-surface vessel detector which comprises a digital photographic device (1), a movable projection device (3) and a master control system (2). The digital photographic device (1) and the movable projection device (3) are respectively connected with the master control system (2), the master control system (2) controls interconnection and data transmission among components by a bus, and a near-infrared lens (15) is mounted on the digital photographic device (1). The near-infrared body-surface vessel detector has the advantages that the detector not only can assist professional medical personnel to clearly observe body-surface vessels of a patient, but also can display information such as the flow rate and the flow direction of blood of a certain position of the patient in real time, and realizes certain treatment promoting effect for healing of a body-surface wound and thrombus ablation of a superficial vein of the patient; the near-infrared body-surface vessel detector can bring great convenience for the medical personnel during clinical application, and has a revolutionary significance; and the near-infrared body-surface vessel detector has an excellent application prospect in the technical field of medical apparatuses and instruments.

The invention discloses a sectioned pressure reduction thrombus prevention instrument which comprises a control module (1), a gas pump (2), a gas cavity (3), a gas release valve (4), a pressure sensor(5), a plurality of gas inlet valves (7) and a plurality of gas bags (8), the control module (1) is used for controlling starting and stopping of the gas pump (2) to control gas pressure of the wholeinstrument and adjusting sectioned pressure parameters, the gas pump (2) is used for generating gas with pressure, the gas cavity (3) is used for containing gas generated by the gas pump (2), the gasrelease valve (4) is used for completing gas release of the gas cavity (3) and the gas bags (8), the pressure sensor (5) is used for measuring pressure of the gas cavity (3) and feeding back pressureto the control module (1), the gas inlet valves (7) is used for controlling the gas of the gas cavity (3) to enter the gas bags (8), and the gas bags (8) are mounted at the body positions for preventing thrombus, so that superficial veins of the mounting positions are pressed and relaxed.

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 relates to a cardiopulmonary bypass artificial lung, characterized by leading venous blood in large superficial veins of a human body, conducting in vitro gas exchange in a lung sac cavity consisting of a lung sac cavity, an oxygen intake sac cavity, a diaphragm and capillary bundles, generating arterial blood with supersaturated oxygen content, and transfusing the arterial blood back into the veins for participating in metabolic cycles of the human body. Compared with a physiological gas exchange process of the human body, the artificial lung uses a unidirectional segmented continuous mode to replace a gas exchange mode adopting exhaling and inhaling reciprocating bidirectionally in the same breathing pipeline in an intermittent alternating way, so that the efficiency is higher and the exchange is more thorough. Compared with allopathy in medical care in the prior art which improves the supplied gas quality and increases the amount, the artificial lung changes the inherent defects of body hypoxia situations, is independent and unique, does not rely on a physiological lung to complete gas exchange, and has replacement and compensation functions for treating pulmonary function defects and insufficiencies.

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 belongs to the technical field of medical instruments, and particularly relates to a vein closure system. The vein closure system consists of a blood vessel closing adhesive containing cyanoacrylate and a blood vessel closing adhesive conveying system consisting of a catheter and a catheter injection part; the catheter is internally provided with at least two catheter cavities used for providing a blood vessel closing glue conveying channel, an optical fiber channel, a guide wire channel or an ultrasonic visible channel, different cavities of the catheter are combined for design,the catheter can enter a vein along a guide wire, blood vessel closing glue is conveyed to the position of the blood vessel through the catheter, and besides, an optical fiber carried in the cathetercan introduce visible light with high penetrating power into the vein. The moving positions of the light and the catheter in the superficial vein can be observed due to the fact that the superficialvein is close to subcutaneous tissue, and the catheter can be developed under ultrasound by reasonably selecting the structure and the material of the catheter.

A disposable penile erection device that has a positive locking mechanism on the superficial veins around the base of a human penile organ. The device is a tubular structure adapted to the penis to be secured in loop configuration about the base of the penis to provide two (2) adjustable and lockable radial constriction force about the base of the penis. Methods for using the device are also provided.

Implementations of a device configured to induce vasodilation of a superficial vein and methods of using the device are provided. The device is configured to ease the process of venipuncture by increasing blood flow to a superficial vein. The device is configured to increase local blood flow to a superficial vein by applying heat and/or vibration at, or near, a prospective puncture site. In this way, vasodilation of the superficial vein may be induced. The device comprises a strap, a flexible heating element, at least one vibration element, a power source, and an ON/OFF switch for selectively energizing both the heating element and the at least one vibration element. In some implementations, the device may further comprise a thermal control switch configured to vary the temperature reached by the heating element and/or a vibratory element control switch configured to vary the vibratory intensity of the at least one vibration element.

The invention discloses a vein image enhancement method based on a maximum curvature method and a multi-scale Hessian matrix, and belongs to the technical field of superficial vein distribution imageacquisition and processing. The method comprises the following steps: firstly, determining vein center lines in four directions, setting the range and iteration step length of a scale factor, then initializing the scale factor and then carrying out Hessian enhancement to obtain an enhanced image, and then carrying out iteration on the scale factor until the scale factor exceeds the maximum value of the range; comparing the enhancement results in all directions, and keeping the maximum value; and finally, adding the maximum values in the four directions correspondingly to obtain a final enhancement result. According to the vein image enhancement method based on the maximum curvature method and the multi-scale Hessian matrix, an extracted vein structure is complete and coherent, details arerich, and the situations of line breakage and unobvious thin and weak vein enhancement effect in the enhancement result of a single-scale method are improved.

The invention discloses a traditional Chinese medicine preparation for treating phlebitis and a preparation method thereof, and belongs to the field of traditional Chinese medicines. The effective ingredient of the traditional Chinese medicine preparation is prepared from the following raw materials: lactuca sativa, veronica undulata, licorice roots, folium ilicis purpurea, rhizoma nelumbinis, corydalis cheilanthifolia, radix dipsaci, valeriana hardwickii, halenia elliptica, ipomoea batatas, common melastoma herb, populus adenopoda maxim, cinnamon, walnut kernels, ligusticum wallichii and salvia miltiorrhiza. The traditional Chinese medicine preparation is prepared from compatible medicinal materials to achieve the effects of clearing heat, removing toxicity, soothing the liver, relieving the bladder, expelling wind to relieve pain, promoting blood circulation, dredging channels, eliminating stasis, diminishing swelling, tonifying middle warmer, homogenizing blood, regulating blood vessels and the like, has the advantages of exact curative effect, quick response, high cure rate, no toxic or side effect, safety and reliability on treatment of hyperviscosity syndrome, expansion of thrombosis, red and low-fever pallial siphuncle in superficial veins, vein collapse, microthrombosis, engorgement of subcutaneous veins, pressing pain in femoral triangle region, peripheral tissue malperfusion, hard pallial siphuncle in local veins, pressing pain in local veins and the like caused by phlebitis, and can be widely applied to clinical treatment of phlebitis.

The invention discloses a superficial vein shooting device. The superficial vein shooting device comprises a PCB, a near infrared LED, a lamp shade, a lens installing base, a solid image sensor, a color filter and an imaging lens set. The color filter and the imaging lens set are installed in a same lens cone. The imaging lens set is installed at the front end of the lens cone. The color filter is installed at the rear end of the lens cone. The brightness of the near infrared LED can be adjusted, and shadowless lighting is obtained through the lamp shade. Superficial veins can be shot.

The invention provides a medical tube-sealing-free superficial vein indwelling needle, relates to the technical field of indwelling needles, and solves the problems that a tube of an indwelling needle is manually sealed, a needle head is bent and deformed, and medical personnel need to operate a flow regulator to seal an infusion tube. The first mounting sleeve comprises a first needle head, and the first needle head is arranged on the outer side of the first mounting sleeve; the reinforcing seat is clamped on the outer side of the first mounting sleeve, and the reinforcing seat is provided with a reinforcing ring; the two positioning plates are connected to the outer side of the first mounting sleeve in a clamped mode, and the two positioning plates are of a butterfly-shaped structure. The first sealing plug and the second sealing plug are punctured through the second needle head, so that the first sealing plug is communicated with the second sealing plug, the infusion tube is matched with the sliding seat, so that the second needle head effectively punctures the first sealing plug, and the sliding seat is elastically arranged, so that the first sealing plug is effectively punctured. Therefore, the first sealing plug can be flexibly switched between sealing and through.

The invention relates to a superficial vein blood vessel fixing device and fixing mechanism. The superficial vein blood vessel fixing device comprises the fixing mechanism for fixing blood vessel anda driving mechanism for driving the fixing mechanism. The superficial vein blood vessel fixing device is characterized in that the fixing mechanism comprises a fixing sheet and pressing sheets arranged on two sides of the fixing sheet, the bottom surface of the fixing sheet is provided with a notch for positioning the blood vessel, one end of each pressing sheet is connected with the fixed sheet,and the other end of each pressing sheet is provided with a friction ball; and after the notch of the fixing sheet is aligned with the blood vessel needing to be fixed, the fixing mechanism is drivenby the driving mechanism to approach the skin and fix the blood vessel. Compared with the prior art, the fixing device has the advantages that the skin can be stretched towards the two sides of the blood vessel through the pressing sheets on two sides of the fixing sheet and the friction balls, so that wrinkles are avoided; and an independent mechanism is adopted for fixation, and it is guaranteedthat the fixing sheet is not changed in position along with tiny movement of the arm of a patient, so that the vein blood vessel cannot deviate, and the fixing effect is improved.

The invention provides a pure traditional Chinese medicine preparation for treating varicosity. The pure traditional Chinese medicine preparation is prepared from the following traditional Chinese medicine raw materials: taraxacum mongolicum, cattail pollen, sophora japonica, centella asiatica, lycium barbarum, cortex dictamni, siberian walking fern, oroxylum indicum, wild chrysanthemum flower, mulberry twigs, excoecaria acerifclia, angelica citriodora, rhizoma nerdostachyos, rhizoma arisaematis, lithospermum, air potato, gentiana macrophylla, radix achyranthis, bulbophyllum inconspicuum, spina date seeds, fleshfingered citron flower, rubia cordifolia, melandrium album, thalictrum foliolosum, cactus, abrus cantoniensis hance and pyrolusite pyrolusitum. The invention aims to provide the pure traditional Chinese medicine preparation for treating varicosity, normal working, learning and living of patients are not affected in the treatment process, and the pure traditional Chinese medicine preparation has the advantages of no pain, no damage, high recovery property, high treatment effect and no reoccurrence after treatment, metabolism of partial cell tissue can be improved, phlebothrombosis and venous blood wall deposition residues can be rapidly dissolved and removed, yin and yang can be balanced to activate blood vessel wall and remedy wall membrane, convex superficial veins can be remedied, original skin color can be recovered, and the pure traditional Chinese medicine has a miraculous treatment effect on varicosity and complication.

The invention discloses an intelligent access control system based on hand back superficial vein recognition. The system includes: an image acquisition device; a recognition controller for image processing and authentication; an electric control lock; an alarm device; and a power supply control device. The power supply control device is connected to the image acquisition device, the recognition controller, the electric control lock and the alarm device to provide electric power supply, and the recognition controller is respectively connected to the image acquisition device, the electric control lock and the alarm device. Identity authentication through vein recognition algorithm can improve the safety and reliability of the access control system, and when the authentication failure times reach certain value, an alarm can be given to further improve the safety factor of the system.

The invention discloses a traditional Chinese medicine ointment for superficial vein embolism caused by clinical examination blood sampling and a preparation method thereof, and belongs to the field of traditional Chinese medicines. The effective ingredient of the ointment is prepared from the following raw materials: oxalis corymbosa, salvia cavaleriei, fig roots, salvia miltiorrhiza, ficus tikoua, lindernia angustifolia, berchemia yunnanensis franch, ligusticum wallichii, rhizoma corydalis, saus-surea peguensis, cinnamomum mairei, licorice root, common melastoma herb, radix acanthopanacis semticosi, hairy waxmyrtle bark, rhizoma atractylodis, ilex pubescens, peach kernels, herba siegesbeckiae and borneol. The traditional Chinese medicine ointment is prepared from medicinal materials in accordance with the principle of monarch, minister, assistant and guide, is applied according to the pathogenesis, has the effects of clearing heat, inducing diuresis, promoting circulation of qi and blood, promoting blood circulation to remove stasis, promoting blood circulation to remove meridian obstruction, inhibiting bacteria, diminishing inflammation, diminishing swelling and relieving pain, and has a good absorption effect, a remarkable curative effect, no toxic or side effect and no clinical adverse response. Clinical application verifies that the traditional Chinese medicine ointment has a relatively high cure rate on superficial vein embolism caused by blood sampling.

The invention belongs to the field of medical instruments, particularly relates to intelligent equipment for increasing the one-time success rate of puncturing and cathetering of a superficial venousindwelling needle and a using method for the intelligent equipment and aims at solving the problem of low one-time success rate of puncturing and cathetering of the superficial venous indwelling needle. By adopting the intelligent equipment and the using method disclosed by the invention, the two core problems of limited safety ranges of vein displacement and diameter puncturing during venous puncturing and cathetering are solved; spans between a fixed arm to be puncturing a proximal cardiac vein and a fixed arm to be puncturing a distal cardiac vein are utilized to be sequentially pressed, sothat the vein is fixed and keeps a the filling state; the position of the vein wall and an operation space for puncturing and cathetering are determined and verified by using an infrared laser lineararray between the fixed arm at the proximal end and the fixed arm at the distal end; and safety puncturing and cathetering are realized by inserting a needle into a blood vessel in a direction parallel to the medial axis or inserting the needle forwards and downwards into the blood vessel with forming an included angle with the medial axis of the blood vessel. The intelligent equipment has the beneficial effects that the success determinacy of superficial vein puncture is greatly improved, pains of patients are relieved, and the medical safety is improved.