JP2016214552A - Adaptor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adaptor capable of solving problems for example, there are two kinds of dermoscopes of, a type for applying a gel such as an echo gel or vegetable oil directly to a skin for imaging, and a polarization filter type (non-contact) for imaging in a state of separating from a skin, but, when directly contacting, a blood vessel on a clinical part is compressed and the blood vessel does not come out or color of the blood vessel changes, and in the non-contact imaging, when imaging by a focus of a camera, it is difficult to safely focus.SOLUTION: There is provided an adaptor interposed between a dermoscope and a skin, the adaptor formed of a cylindrical body having hardness of 22-45, light transmission ratio of 0-45%, and an opening diameter of 5-50 mm.SELECTED DRAWING: Figure 1

Description

   The present invention relates to an adapter that enables easy observation with a dermoscope.

  Usually, a digital dermoscope (a digital camera that magnifies and captures the pigmentation of skin of a certain size) fills the skin surface with a dermoscope with gel or vegetable oil to expel air and generate reflected light on the skin surface. It is possible to observe pigmentary changes up to the superficial skin layer. It is known that a characteristic structure and color tone (network structure etc.) that cannot be found with the naked eye can be detected, so that the diagnostic rate is improved. In addition, using a polarizing filter, observation diagnosis is possible by preventing reflected light from the skin surface.

  Prior Document 1 describes a method of making a video camera into a dermoscope using a dermoscope adapter. However, this patent technique has a problem that a stable light source cannot be obtained because illumination light is used outside, and that stable color reproducibility is difficult to obtain.

JP 2008-018207 A

  The dermoscope is also used as a means of diagnosing cancer by observing skin pigmentation (such as a mole). At that time, the dermoscope needs to be used as telemedicine. For this reason, it is required that the image quality and color reproducibility be good so that accurate diagnosis can be performed from the image without being on site. Therefore, it is necessary to create an image with good color reproducibility by creating a state in which illumination light is built in and is not affected by external light.

When contacting and imaging, it is usual to apply pressure and contact, but the blood flow of the capillaries is stopped by the pressure, and only imaging at that time can be performed. Therefore, I would like to take an image of a state where no pressure is applied to the clinical department. When non-contact imaging is performed, no pressure is applied to the clinical department, but there is a problem that it is difficult to focus while the dermoscope is fixed with auto focus and manual focus with camera focus, and the camera is in focus.
In addition, since the dermoscope is a device that cannot be sterilized, it has been difficult to deal with infectious patients.

  In the present invention, when observing the skin with a dermoscope, it is normal to take an image while making contact with the skin. However, when the adapter is imaged between the two in order to avoid applying pressure to the skin, the skin and the dermoscope are used. The adapter is also used for the purpose of keeping the distance from the constant. The adapter has a hardness of about 22-45 considering contact with the skin, etc., the light transmittance is 0-45%, the balance between internal light and external light is taken, and the opening diameter is 5-50 mm. It consists of a cylindrical body. Further, the material is silicon rubber, and the cylindrical body is conical. In order to closely contact the dermoscope, an air layer is provided with a slit.

  Observe the skin in two states with the conventional method that can image the state of stopping capillary blood flow while pressing directly against the skin and the adapter of the present invention that has an opening and does not apply pressure to the clinical department It was possible. The adapter was made of silicon rubber or the like, and when the adapter was in contact with the skin for observation, it was possible to observe even with moderate pressure. By controlling the transmittance of the adapter and setting the internal light to leak to the extent that the internal light is not affected by the external light, the subject can observe the skin by performing accurate measurement without disturbing the white balance. Understand the measurement process you are doing so that you can be tested with confidence. It is better to change the diameter of the opening depending on the area of the clinical department, but when the adapter is made with a cone, it is possible to change the observation area by turning over the narrow side and wide side of the opening. Become. Two modes can be reproduced by attaching and detaching the adapter, but by providing a slit inside the adapter, it can be attached with a simple structure and can be easily attached and detached. If the subject has a contagious pathogen, the adapter can be made of silicon rubber or the like and can be sterilized easily by steam sterilization or the like.

Cross section of digital dermoscope FIG. 3 is an overall shape diagram of the adapter of the present invention. Sectional view of the adapter attached to the tip of the dermoscope Cross-sectional view of the adapter configuration when using a polarizing filter

The present invention will be described with reference to examples.

  The adapter is manufactured by Asahi Kasei Co., Ltd. with a hardness of about 40 and low transmittance (1.63% / 4.4 mm) and M8012 with a hardness of about 27 and high transmittance (80.2% 4 .4mm) M8520 molding silicon rubber is used to mix the two so that the hardness and transmittance become the specified values. In the case of the example, when manufactured by mixing 20% of M8012 and 80% of M8520, a hardness of 30.9 was obtained. For the measurement, a sample was manufactured and measured with a durometer. Further, the transmittance was measured with the same sample manufactured by hardness measurement using a visible light reflectance / transmittance measuring device. As a result, the average thickness of the portion where the light of the adapter transmits is converted to a thickness of 4.4 mm. The shape is conical, the narrow opening that contacts the skin is 21mm in diameter, 12mm long to fit along the adapter, the conical maximum opening is 43mm, and the gap between the skin and the optical glass of the dermoscope is not The contact adapter is 8 mm and the gel adapter is 2 mm.

Although it is manufactured using a mold, in order to increase the adhesion, a slit is provided in the part where the adapter is in close contact with the dermoscope, an air layer is formed and pressed, and the adhesion is achieved by vacuum. In order to have two types of imaging conditions, it can be easily set so that it can be easily removed. It is possible to make the skin softly touch or make it opaque to prevent external light and to see the internal illumination light. As a result, there is an advantage that the patient can easily understand the examination process and can take the examination with peace of mind. Since a material called silicon rubber is used, heat resistance and chemical resistance are improved and sterilization is possible. (The autoclave is heated to 121 ° C with 2 atm saturated steam and treated for 20 minutes. In emergency situations such as during surgery, high-speed autoclave at 132 degrees for 3 minutes is performed. Confirmed that it can be used.)
First of all, the dermoscope is brought into direct contact with the skin and the blood flow is stopped for imaging. Next, press the adapter onto the dermoscope while covering it and fix it. Images are taken with blood flow. At that time, since the distance to the skin is stable, an image with good focus and no dullness can be obtained. The same applies to gel-use and non-use-types.

Since it is on a conical shape, if the clinical area is large, the adapter can be used upside down if necessary to increase the opening diameter of the contact portion, and can be photographed from a narrow opening. The gel type and the polarizing filter can be shared in the same shape.
This is a dermoscope adapter that can be removed when necessary by combining the digital dermoscope of FIG. 1 and an adapter as shown in FIGS.

  The present invention can be used for medical skin observation.

1: Imager 2: Lens for camera 3: Lens for dermoscope module 4: LED
5: Polarizing filter 6: Optical glass 7: Gel 8: Skin 9: Adapter 10: Shallow clinical department

Claims (4)

An adapter between a dermoscope and skin, wherein the adapter is a cylindrical body having a hardness of 22 to 45, a light transmittance of 0 to 45%, and an opening diameter of 5 to 50 mm. 2. The adapter according to claim 1, wherein the cylindrical body is silicon rubber. The adapter according to claim 1 or 2, wherein the cylindrical body is conical. The adapter according to any one of claims 1 to 3, further comprising a slit for closely contacting the dermoscope.