RU176530U1 - DEVICE FOR NON-INVASIVE VISUALIZATION OF SURFACE SLEEP VEINS - Google Patents

Abstract

This utility model relates to medical equipment and medical equipment, namely, to a new device for non-invasive visualization of superficial saphenous veins and can be used for non-invasive visualization of superficial saphenous veins for convenient manipulation of them (intravenous injection, blood sampling from a vein, installation of intravenous catheters sclerotherapy for varicose veins, sclerotherapy of vascular neoplasms, etc.).

Description

This utility model relates to medical equipment and medical equipment, namely, to a new device for non-invasive visualization of superficial saphenous veins and can be used for non-invasive visualization of superficial saphenous veins for convenient manipulation of them (intravenous injection, blood sampling from a vein, installation of intravenous catheters sclerotherapy for varicose veins, sclerotherapy of vascular neoplasms, etc.).

Devices for imaging saphenous veins are used in medicine for manipulating the saphenous veins, such as intravenous injections, blood sampling for analysis or for use as a donor, cosmetic sclerotherapy, etc. The use of devices for visualizing saphenous veins during manipulations on veins in patients with problem veins is especially relevant: cancer patients undergoing / undergoing chemotherapy, patients with an increased body mass index, children, the elderly, patients with a dark complexion.

Research E.A. Cummings et al. Showed that vein manipulation is one of the most common causes of childhood pain [E.A. Cummings et al, Prevalence and source of pain in pediatric inpatients, Pain, Volume 68, Issue 1, November 1996, Pages 25-31.]. Often during a blood sampling or intravenous injection, a nurse is forced to puncture several times in a row due to the fact that in most cases the child’s veins are difficult to detect in the absence of special devices. It is difficult to detect veins not only in children, but also in all categories of patients listed above. Using a device for visualizing veins allows you to non-invasively and painlessly find a vein suitable for manipulation and thereby speed up and facilitate the procedure for the patient. However, this is not the only advantage that this device provides - repeated repeated injections force the nurse to use several sets of needles for one blood sampling, which leads to an increase in the cost of consumables.

Another problem associated with vein manipulation is catheter-associated infections (KAI). NP O'Grady et al. showed that about 250,000 cases of KAI are recorded in the United States annually, and mortality from KAI is between 12 and 25% [NP O'Grady et al, Guidelines for the Prevention of Intravascular Catheter-related Infections, The Centers for Disease Control, August 9, 2002, Vol. 51, No. RR10, Pages 1-26]. Each catheter-associated infection entails the need for antibiotic treatment, as well as often symptomatic treatment and the patient spending extra time in the hospital, which entails significant additional costs for the medical institution. RP Shannon et al. in their article, they say that eliminating such situations will both improve patient outcomes and provide significant benefits for health facilities [RP Shannonet et al, Economics of central line-associated bloodstream infections, American Journal of Medical Quality, 2006. Vol. 21, No. 6 suppl, Pages 7S-16S]. The use of devices for visualization of veins makes it possible to install a catheter with minimal damage, as well as monitor the condition of the vein while the catheter is in it. All this allows to reduce the number of cases of KAI and as a result to increase the survival of patients and lower treatment costs.

Known devices for non-invasive imaging of saphenous veins are divided into two groups:

1) Contact;

2) Contactless.

Contact devices for non-invasive visualization of saphenous veins are characterized by the fact that for visualization of a vein, the working area of the device should be in direct contact with the working surface (above the area where the vein is located on the surface of the skin of a person). An example of existing devices of this type are TransLite's VeinLite visualizers (Fig. 1).

Non-contact devices for non-invasive imaging of saphenous veins are characterized by the fact that when using them there is no need for direct contact of the device with the working surface. The vein visualizer in this case is installed at a distance from the surface of the human skin over the vein area and the image of the saphenous veins is projected onto the work area. An example of existing devices of this type can serve as an AccuVein vein visualizer [US Pat. .2 shows the device in operation), as well as Christie's VeinViewer.

Known devices for non-invasive imaging of veins of the company TransLite, related to medical equipment and which can be used for non-invasive imaging of superficial saphenous veins. Any TransLite non-invasive vein imaging device includes a body with a round neck representing the working area, an on / off button for the device, and a light source and battery located inside the case.

The TransLite product line includes 5 varieties: VeinLite LED +, VeinLite LED, VeinLite PEDI (devices for visualizing veins in children), VeinLite EMS PRO, VeinLite EMS, which differ in size and number of LEDs in the light source (Fig. 3 )

The disadvantages of the known devices for visualizing veins are an inconvenient working area, characterized by narrow access for the needle, a small number of LEDs, the inability to adjust the brightness of the light source, and the inability to attach the device to the limb of the patient.

The TransLite vein imaging device is characterized in that it has a cutout representing a working area, a smaller area, there is no possibility to adjust the brightness of the light source, there is no special visor protecting the working area from external lighting, there are no connectors for connecting the device to the bundle.

The authors of this utility model have created a device for non-invasive visualization of superficial saphenous veins, the advantages of which are:

1) Large area of the work area;

2) Wide access for needles;

3) The presence of a shadow visor that protects the work area from external radiation;

4) The ability to adjust the brightness of the light source;

5) Efficiency and high brightness of the light source;

6) The ability to attach the device to the work surface.

The aim (task) of the present invention is to provide a new device for non-invasive imaging of superficial saphenous veins.

This goal is achieved by a new device for non-invasive visualization of superficial saphenous veins (Fig. 4), consisting of a body (1), a visor to protect the working area from external radiation (2), a removable mount for connecting the device to a tourniquet for attachment to the patient's limb (3 ), on / off buttons of the device (4), brightness control buttons (5), and placed inside the light source housing, power circuit, battery, and characterized in that the work area (6) is made in the form of a U-shaped cut-out, shape corp the whisker above the working surface is made in the form of a shadow visor hanging over the working area, the light source is made in the form of a connected group of SMD-LEDs arranged in a U-shape, the brightness of the light source is regulated using a multi-level power scheme, there are connectors on the case for connecting the device to the harness for attaching to the limb of the patient.

A schematic diagram of the device is shown in FIG. 5 where

7 - USB connector;

8 - charger;

9 - Li-pol rechargeable battery;

10 - microcontroller;

11 - control buttons;

12 - controlled voltage stabilizer;

13 is a light source.

The task to which the claimed technical solution is directed is to increase the area of the working area, adding the ability to adjust the brightness of the light source, adding a special visor that protects the working area from external lighting and increasing the contrast of visualization in the working area, adding special connectors for connecting the device to the bundle, all this enhances the functionality and usability of the device.

The solution to this problem is achieved by a device for non-invasive visualization of superficial saphenous veins, consisting of a body, a visor to protect the work area from external radiation, a device on / off button, brightness adjustment buttons, a charger connector and a light source located inside the case, a power circuit, battery, and characterized in that the working area is made in the form of a U-shaped cut-out, the shape of the body above the working surface is made in the form of a shadow peak, nav sinking above the working area, there are connectors on the case for connecting the device to the harness for attaching to the patient's limb.

The device for visualizing veins includes a body with a U-neck that represents the working area, on the body there is a button on / off the device, buttons for adjusting the brightness of the light source, a connector for connecting a charger, connectors for connecting the device to the harness, the shape of the body above the work area made in the form of a shadow visor.

Inside the case there is a light source, a multi-level power scheme and a battery.

The light source is a 30-40 SMD LEDs with a wavelength of 590-740 nm, located U-shaped along the border of the working area, in the lower part of the housing.

A multi-level power circuit consists of a microcontroller connected to a transistor, an inductor and a capacitor, the operation of which together provides a change in the brightness of the LEDs that make up the light source of the device by changing the duty cycle of the PWM signal.

More preferred is a device characterized in that the light source is made in the form of a connected group of SMD LEDs located U-shaped on the lower surface of the housing around the perimeter of the U-shaped cut-out of the working area, which allows to increase the number of light sources per unit surface area and, as the consequence is to increase the luminous flux, increase the backlight area due to the larger scattering angle, and also increase the battery life due to less energy consumption.

More preferred is a device characterized in that the brightness of the light source is controlled using a multi-level power circuitry connected to control buttons located on the outer surface of the casing, which makes it possible to improve the contrast of veins taking into account the strength of external radiation, and also allows to increase the battery life in case if there is no need to use high brightness of the illumination of the working area for sufficient contrasting veins

More preferred is a device, characterized in that the work area is made in the form of a U-shaped cutout with a width of 15-40 mm and a length of 40 mm, which allows for wide access to the work area.

More preferred is a device, characterized in that on the housing there are connectors for connecting the device with a harness for fixing the device to the working surface, which allows you to free the hands of the manipulator.

More preferred is a device characterized in that the shape of the body above the working surface is made in the form of a shadow peak, which allows to improve the contrast of the veins by reducing the amount of external radiation incident on the working area.

More preferred is a device for intravenous injection, an intravenous catheter or blood sampling.

More preferred is a device for sclerotherapy of veins or vascular neoplasms.

The technical result provided by the given set of features is to increase the usability by changing the shape of the case, increasing the area of the working area and changing its shape, adding connectors for connecting the device to the harness, adding the ability to adjust the brightness of the light source using a multi-level power scheme, increasing the quality of visualization veins due to the addition of a shadow peak over the working area, increasing the battery life of the device due to the use of SMD-LEDs in the light source and the multi-level power schemes.

The following are definitions of terms that are used in the description of the present invention.

1) SMD - surface mounted device (component mounted on the surface);

2) KAI - catheter-associated infections;

3) PWM - pulse width modulation;

4) Sclerotherapy - the introduction of a special drug into the lumen of the vessel, which causes the walls of the vessel to stick together and subsequently resorb;

5) Non-invasive - atraumatic, bloodless;

6) Battery - rechargeable battery;

7) Li-pol battery - lithium-polymer battery.

The invention is also illustrated by the drawings.

FIG. 1. VeinLite Vein Visualizer from TransLite. FIG. 2. AccuVein vein visualizer at work.

FIG. 3. TransLite's line of vein visualizers: VeinLite LED +, VeinLite LED, VeinLite PEDI, VeinLite EMS PRO, VeinLite EMS.

FIG. 4. Device for non-invasive imaging of superficial saphenous veins. FIG. 5. Schematic diagram of a utility model.

FIG. 6. U-shaped working area of the device located on the working surface in the off state.

FIG. 7. U-shaped working area of the device, located on the working surface in the on state, in the working area is a visualized saphenous vein. FIG. 8. General view of the device in operation.

The examples below illustrate but do not limit the utility model.

Example 1. For intravenous injection / blood sampling from a vein on a preliminarily prepared limb (the proposed injection area is removed from clothing, the tourniquet is placed above the injection area), the surface saphenous vein search area and the device for visualizing superficial saphenous veins are sterilized, include a device (Fig. 4 ) using the on / off button (3), press the U-shaped part of the device located around the working area (5) to the surface of the patient’s skin in the place where it is necessary to detect a vein, adjust they adjust the brightness of the light source to obtain the desired level of visualization using the handle to increase / decrease the brightness of the light source (4), by moving the device in the longitudinal and transverse directions, they detect a vein, position the device so that the detected vein is located along a U-shaped cut, then inject into the detected vein, located in the working area, with a needle and turn off the device using the on / off button (3).

Example 2. For sclerotherapy of veins, the work area is sterilized (the skin surface above the vessel that needs to be sclerotized) and the device for visualization of superficial saphenous veins is turned on by the device (Fig. 4) using the on / off button (3), the U-shaped part is pressed a device located around the working area (5) to the surface of the patient’s skin at the location of the affected vessel, rotating and moving the device in the transverse and longitudinal directions, install the device so that a vessel that does not it was necessary to sclerotize, it was visualized as contrastingly as possible, and the access for the needle was located as convenient as possible for the user, adjust the brightness of the light source to obtain the desired level of visualization using the handle to increase / decrease the brightness of the light source (4), then inject, inject sclerosant, and, if necessary, repeat adjusting the brightness of the light source to provide the required level of visualization with the handle to increase / decrease the brightness of the light source (4), at the end of and procedures turn off the device using the on / off button (3).

The invention can be used in medicine, veterinary medicine to solve the problems of manipulating veins, such as intravenous injection, blood sampling from a vein, installing intravenous catheters, sclerotherapy for varicose veins, sclerotherapy of vascular neoplasms, etc.

Claims (8)

1. A device for non-invasive visualization of superficial saphenous veins, consisting of a body, a visor to protect the working area from external radiation, a device on / off button, brightness adjustment buttons, a connector for the charger and the light source located inside the housing, a power circuit, a battery and characterized in that the shape of the working area is made in the form of a U-shaped cut. 2. The device according to claim 1, characterized in that the light source is made in the form of a connected group of SMD LEDs located U-shaped on the lower surface of the housing around the perimeter of the U-shaped cut-out of the working area, which allows to increase the number of light sources per unit surface area and increase the backlight area due to a larger scattering angle, as well as increase battery life due to less energy consumption. 3. The device according to claim 1, characterized in that the brightness of the light source is controlled using a multilevel power circuit connected to control buttons located on the outer surface of the housing, which allows to increase the battery life of the device if it is not necessary to use a high brightness of the backlight for the working area for sufficient contrasting veins. 4. The device according to p. 1, characterized in that the work area is made in the form of a U-shaped cutout with a width of 15-40 mm and a length of 40 mm, which allows to increase the area of the working area of the device. 5. The device according to p. 1, characterized in that the housing has connectors for connecting the device to the harness for fixing the device to the work surface, which allows you to fix the fixing harness on the device body. 6. The device according to p. 1, characterized in that the shape of the housing above the working surface is made in the form of a shadow visor, which allows to reduce the amount of external radiation incident on the working area. 7. The device according to p. 1 for intravenous injection, the installation of an intravenous catheter or blood sampling. 8. The device according to claim 1 for sclerotherapy of veins and vascular neoplasms.

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