JP2006102360A - Living body information presentation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a living body information presentation device capable of correctly and quickly confirming a characteristic information of a living body such as the position and direction of a blood vessel by a simple operation. <P>SOLUTION: The device is equipped with an image pick-up means 402 for imaging the living body, an illumination means 401 for illuminating an illuminating light of a specific wavelength, an image processing means for producing an emphasis image information emphasizing the characteristic information of the living body based on the photographed image information from the image pick-up means 402, and a projection means for projecting the image emphasizing the characteristic information on the surface of the living body. The characteristic information of the living body is, for instance, the position of the blood vessel. The image emphasizing the blood vessel is projected on the actual position of the blood vessel. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a biological information presentation apparatus that presents characteristic information such as a blood vessel position of a biological body as an image.

  In order for a doctor or nurse to perform intravenous injection or infusion on the patient's arm or the like, it must first be possible to confirm the exact position of the patient's vein to puncture the injection needle or catheter. The fat layer is relatively thin near the inner arm joint, and veins are relatively easy to check. Therefore, normally, the upper arm is squeezed with a rubber band or the like to stop the blood circulation of the vein, and the vein is inflated with blood pressure to confirm the position more accurately. However, the thicker the fat layer, the more difficult it is to confirm the position of the vein, and there are cases where it cannot be confirmed using the rubber band or the like. In this way, when the position of the vein cannot be confirmed simply by tightening the upper arm with a rubber band, conventionally, a method of warming the arm or searching for the vein with the needle tip has been performed. There was a problem that it caused great pains. Furthermore, when it is performed in the dark, such as a regular treatment performed at night on an inpatient, further difficulties are involved.

  A vein exploration device for avoiding these difficulties has been conventionally proposed (see Patent Documents 1-6).

  In FIG. 10, the structural example of the conventional vein search apparatus described in patent document 1 is shown. The vein exploration device of FIG. 10 is disposed at the center of the distal end portion of the elongated casing 1 so that the light emitting element 2 that emits light having a wavelength in the red or infrared region irradiates the front of the distal end. Further, a light receiving element 3 for receiving a wavelength in the red or infrared region is provided on both sides of the light emitting element 2 at the front end portion of the housing 1, and the light receiving element 3 has a wavelength to the arm of the light emitting element 2. The light is arranged so that it can efficiently receive only the reflected light from tissues other than the veins. Further, the casing 1 houses a battery 4 for driving power. On the outer peripheral wall of the housing 1, a power operation switch 5 for supplying and controlling the driving power of the battery 4 and a display element 6 for displaying the positional relationship between the device and the vein are arranged. Further, an arrow 7 indicating the center of the apparatus is engraved at the center of the outer peripheral wall of the front end portion of the housing 1, and a clip 8 is provided for holding the apparatus in a pocket.

  When a doctor or nurse holds this device in his hand and puts the tip around the area where he wants to puncture on the patient's arm and traces the arm, the difference in the amount of light received by the two light receiving elements 3 is indicated by the arrow 7 relative to the vein position. In response to the degree of deviation, display is performed on the display element 6 so as to correspond to the difference in the amount of received light. The doctor or nurse finely adjusts the position of the tip while viewing the display on the display element 6 so that the difference in the amount of received light becomes zero. The position indicated by the arrow 7 at that time indicates the position where the vein exists.

  Patent Documents 2-6 describe a similar vein exploration device. The vein exploration device of Patent Document 2 is configured to detect the position and direction of a vein by arranging a plurality of sets of two light emitting elements and two light receiving elements. The vein exploration device of Patent Document 3 attaches two arms to an arm, and a cursor incorporating a set of two light-emitting elements and two light-receiving elements can be moved on each arm. Is detected.

  The vein exploration device of Patent Document 4 has a configuration in which a plurality of sets of light emitting elements and two light receiving elements are arranged, and is provided with means for spot illumination on the arm to indicate the vein position on the arm. The vein exploration device of Patent Document 5 has a configuration in which a plurality of pairs of light emitting elements and two light receiving elements are arranged, detects pulsation from the amount of light received by at least one light receiving element, and displays the presence or absence of pulsation. It is. Further, the vein exploration device of Patent Document 6 allows a cursor incorporating a pair of a light emitting element and a light receiving element to be slidable on a bracelet, tightens the arm, slides the cursor on the bracelet, and directly above the vein. When it comes, the LED on the bracelet lights up.

  In addition, as a conventional personal identification device that is technically related, although the purpose of the device is different, the features of the blood vessel pattern are extracted and acquired using the visible light image and near infrared image of the finger, and the extracted blood vessel pattern There has been proposed a device for identifying an individual by comparing it with the registered blood vessel pattern features (see Patent Document 7).

Japanese Patent Laid-Open No. 2-161956 (page 3, FIGS. 2, 3, 4) Japanese Patent Laid-Open No. 2-172472 (page 4, 3, 4 and 5) JP-A-2-172473 (2nd page, FIGS. 1, 2 and 3) JP-A-2-174852 (page 3, FIGS. 3, 4, 5) Japanese Patent Laid-Open No. 2-174853 (page 4, FIG. 1) Japanese Patent Laid-Open No. 2-174854 (2nd page, FIG. 1) Japanese Patent Laid-Open No. 11-203452 (page 3, FIG. 1)

  However, in the conventional configuration, the injection is performed in a state where the device is in contact with or attached to the arm, and the device itself is obstructive and is difficult to puncture. In addition, when used for an unspecified number of patients, there is a risk of blood infection, which is unsanitary. Also, with the conventional configuration, it is difficult to find an optimal vein position and direction that is thicker and more linear. Furthermore, in the conventional configuration, after the puncture, if the tip of the needle in the living body does not pierce the target vein correctly, it is not known how to move the needle tip position and re-pierce the target vein.

  An object of the present invention is to provide a biological information presentation apparatus that can accurately and quickly confirm biological feature information such as the position and direction of a blood vessel with a simple operation.

  The biological information presentation apparatus according to the present invention presents biological feature information as an image, and illuminates illumination light having a predetermined wavelength for photographing the feature information onto the biological body, and photographs the biological body. Imaging means for acquiring biometric captured image information, image processing means for detecting the feature information based on the biometric captured image information, and converting the detected feature information into imaged projection image information, and the projection Projecting means for projecting a projected image based on image information onto the surface of the living body.

  In the biological information presentation apparatus according to the present invention, the imaging unit captures the projected image projected on the living body by the projection unit to obtain visible image information, and the image processing unit includes the biological image captured image information. A positional deviation between the feature information detected based on the feature information detected based on the visible image information is detected, and the feature of the projection image projected on the living body surface by the projection unit based on the positional deviation is detected. The information for correcting the projection image information so that the position of the information coincides with the position of the feature information of the living body is included.

  In the biological information presentation device of the present invention, the illumination unit intermittently irradiates the living body with the illumination light, and the imaging unit displays the feature information based on the biological image image information at the time of the illumination light irradiation. Includes what to detect.

  In the biological information presentation device according to the present invention, the image processing means detects a positional shift between the feature information based on the biological captured image information continuously acquired as movement information of the living body, and includes the movement information as the movement information. And correcting the projection image information on the basis thereof.

  The biological information presentation apparatus according to the present invention includes an apparatus in which the imaging unit and the projection unit use the same lens.

  In the biological information presentation device of the present invention, the feature information is a blood vessel position, the illumination unit irradiates near-infrared wavelength illumination light, and the imaging unit has high near-infrared wavelength spectral sensitivity. And obtaining near-infrared image information that is the biologically-captured image information at the time of illumination light irradiation, and visible image information that is the biologically-captured image information at the time of non-irradiation of the illumination light, and the image processing means Includes generating projection image information in which a blood vessel image is image-enhanced based on the near-infrared image information, and the projection unit projects a visible image based on the projection image information onto the living body surface.

  In the biometric information presentation apparatus according to the present invention, the image processing unit generates feature information from the biometric image information, and generates blood vessel emphasized image information from blood vessel position shape information among the feature information. An enhanced image generating unit that stores the blood vessel enhanced image information, and outputs the stored blood vessel enhanced image information to the projecting unit as the projection image information. In the case of near-infrared image information obtained by imaging near-infrared light, near-infrared feature information first storage means for storing the feature information generated by the feature extraction means, and the biological image-captured image information from the living body In the case of visible image information obtained by imaging visible light, visible feature information storage means for storing the feature information generated by the feature extraction means, and the biometric imaged image information images near-infrared light from a living body. In the case of near-infrared image information, the feature information generated by the feature extraction means is stored in the near-infrared feature information first storage means prior to being stored in the near-infrared feature information first storage means. From the feature information stored in the near-infrared feature information second storage means for storing the feature information, the feature information stored in the visible feature information storage means, and the feature information stored in the near-infrared feature information first storage means, the feature A positional deviation of information is detected, a direction of the positional deviation and a positional deviation amount are generated as a first vector, and the feature information and the near-infrared feature information stored in the near-infrared feature information second storage means are stored. A positional deviation detecting means for detecting a positional deviation of the characteristic information from the feature information stored in one storage means and generating the positional deviation direction and the positional deviation amount as a second vector; and the blood vessel enhanced image storage means Remember Corrected image information is generated by moving the tube-enhanced image information by the amount of the vector in the direction of the first vector or the second vector, and the corrected image information is used as the new blood vessel-enhanced image information. And an image correction unit that is updated and stored in the image storage unit.

  In the biological information presentation device according to the present invention, the feature information generated by the feature extraction unit is a position shape of a blood vessel, a blood vessel branch point, a position of an image of a special sticker attached to a living body, or an optimum puncture region. And the positional deviation detecting means detects a change in the position of the feature information.

  The biological information presentation device of the present invention supports the illumination unit, the imaging unit, the image processing unit, a housing that houses the projection unit, and the housing at a predetermined position with respect to the living body. Including a support means for.

  The biological information presentation apparatus of the present invention includes a pedestal unit for placing the living body, and the support unit is fixed to the pedestal unit.

  In the biological information presentation apparatus according to the present invention, the support means includes an apparatus that can adjust an angle or a height of the housing with respect to the living body.

  The biological information presentation apparatus of the present invention includes an input / output unit that outputs information held by the image processing unit to the outside and receives information from the outside, and the image processing unit includes the projection image information and the information It includes generating composite image information obtained by combining information from the outside, and the projection unit projecting a projection image based on the composite image information onto the living body surface.

  Embodiments of the biological information presentation apparatus of the present invention will be described with reference to the drawings. In the following description, a blood vessel position presentation device that presents a blood vessel position as biometric feature information will be described as an example of a biological information presentation device.

  As is conventionally known, venous blood in a living body has a characteristic of easily absorbing near-infrared light.For example, reflected light from a living body is irradiated with near-infrared light in a state where the living body is irradiated with near-infrared light. When an image is picked up using an image sensor having high sensitivity to light (for example, a CCD type image sensor), an image with a relatively low luminance in the blood vessel portion and a relatively high luminance in the skin portion is obtained.

  The blood vessel position presentation apparatus of the present invention detects a blood vessel of a living body using this characteristic, and projects an image showing the detected blood vessel on a true blood vessel position of the living body. Therefore, when a doctor or nurse performs an injection into a blood vessel, the blood vessel position can be accurately and quickly confirmed by an image projected on a living body even if the blood vessel is difficult to see visually.

(First embodiment)
FIG. 1 shows a schematic functional block diagram of the blood vessel position presentation device according to the first embodiment of the present invention. The blood vessel position presentation apparatus in FIG. 1 includes an illumination unit 401, an imaging unit 402, an image processing unit 403, a projection unit 404, and an input / output unit 405.

  The illumination unit 401 irradiates a living body with near infrared light 421 that is illumination light in the near infrared wavelength region, and includes, for example, a near infrared LED as a near infrared light source. The illumination unit 401 causes the near-infrared light source to emit light in accordance with an instruction 411 (optimal light intensity and irradiation timing) from the image processing unit 403. The near-infrared light 421 is irradiated intermittently. For example, the imaging unit 402 irradiates for a period in which 3 frames are imaged, and the irradiation for a period in which the subsequent 9 frames are imaged is stopped. Further, the intensity of the near infrared light 421 to be irradiated is output from the image processing means 403 so that the contrast between the blood vessel portion and the skin portion is maximized in the photographed image at the time of near infrared light irradiation, and the near red light is emitted. It is controlled by controlling the amount of input current to the outer LED.

  The imaging unit 402 captures a projection image projected on the living body by the living body and the projecting unit 404, and includes a CCD imaging device or a CMOS imaging device having high spectral sensitivity from the visible light wavelength to the near infrared wavelength. The captured image information obtained from the reflected light 422 from the living body is transferred to the image processing unit 403 as the biological captured image information 413. As described above, since the near-infrared light 421 from the illumination unit 401 is intermittently irradiated, the imaging unit 402 includes near-infrared image information that is imaging information when the near-infrared light 421 is irradiated, Visible image information that is imaging information when the near-infrared light 421 is not irradiated is acquired, and is transferred to the image processing unit 403 as a living body captured image 413. As will be described later, the imaging unit 402 captures an image through a filter that transmits only near-infrared wavelength light when the near-infrared light 421 is irradiated, and there is no such filter when the near-infrared light 421 is not irradiated. Take an image with. The imaging unit 402 also transfers flag information 412 for distinguishing whether the biometric captured image information 413 to be transferred is near-infrared image information or visible image information to the image processing unit 403. As the flag information 412, a signal indicating a use period and a non-use period of a filter that transmits only light having a near infrared wavelength can be used.

  The projection unit 404 generates projection light 423 to be projected on the surface of the living body based on the projection image information 414 from the image processing unit 403. The projected image information 414 is an image enhancement of a blood vessel image based on near-infrared image information. Since the projection light 423 is visible light, the image projected on the surface of the living body is a projected blood vessel image obtained by visualizing blood vessels. And become visible to doctors and nurses. The projection image information 414 is image information in which the pixel value of each pixel is represented by 8 bits each for R (red), G (green), and B (blue).

  The image processing means 403 detects biological feature information based on the biological captured image information 413, converts the detected feature information into blood vessel projection image information, and is realized mainly by a processor that executes a predetermined program. Is done. When the blood vessel position is presented, specifically, the projection image information 414 in which the blood vessel image is image-enhanced based on the near-infrared image information which is the living body captured image information 413 when the near-infrared light 421 is irradiated. Generate. Further, the position of the projected blood vessel image projected by the projection light 423 is recognized based on the visible image information that is the living body captured image information 413 when the near infrared light 421 is not irradiated. Then, the projection image information 414 is corrected so that the position of the projected blood vessel image matches the blood vessel position of the living body. When correcting the projection image information 414, the displacement of the blood vessel position detected based on the continuously acquired biological image information 413 is detected as a vector indicating the movement of the biological body, and the projection image information is based on this vector. 414 may be corrected.

  Note that when the blood vessel image is enhanced, the image processing unit 403 performs processing such as edge enhancement and color addition. By performing such processing, the projected image becomes clear even if the edge of the blood vessel part is blurred.

  In addition, the image processing unit 403 sends the projection image information 414 to the projection unit 404 and sends an instruction 411 for instructing the intensity and irradiation timing of the near infrared light 421 to the illumination unit 401. The intensity of the near-infrared light 421 is obtained based on near-infrared image information that is the living body captured image information 413.

  The input / output unit 405 formats the output data 416 from the image processing unit 403 in accordance with a predetermined communication protocol and transmits the data as communication information 415 to the outside. The input / output unit 405 outputs the communication information 415 from the outside in accordance with the same predetermined communication protocol. The data is formatted and transferred as input data 416 to the image processing means 403. Input data 416 from the outside is combined with projection image information 414 in which a blood vessel image is enhanced. Use of the input / output data 416 will be described later.

  Each element shown in FIG. 1 is housed in a predetermined housing, and is used in a predetermined positional relationship with a living body whose blood vessel position is to be detected. FIG. 2 is a diagram illustrating an arrangement of the blood vessel position presentation device according to the first embodiment of this invention.

  Each element shown in FIG. 1 is housed in a housing 101, and the housing 101 is maintained in a predetermined positional relationship with the living body by the support means 100. The support means 100 includes a support rod 102, a height fixing portion 103, a height adjustment support rod 104, a power supply portion 105, an outlet cable 106, and a clip 108, and is fixed to the injection base 107 by the clip 108. . The pedestal 107 is a pedestal dedicated to injection used in general medical practice, and an arm 109 is placed on the pedestal 107 when a doctor or nurse performs intravenous injection.

  The housing 101 and the support means 100 are connected by a support rod 102, and the height fixing portion 103 moves up and down along the height adjustment support rod 104, and the height between the arm 109 and the housing 101 is a predetermined distance. Thus, the height fixing portion 103 is fixed to the height adjustment support rod 104. As a result, the operator can adjust the distance between the casing 101 and the arm 109.

  The height adjustment support rod 104 is fixed to the power supply unit 105, and the electric power supplied from the outside by the outlet cable 106 is supplied to the housing 101 through the support means. The angle changing unit 131 is used to change the angle between the support rod 102 and the height fixing unit 103, and the operator can adjust the angle of the casing 101 with respect to the arm 109.

  The housing 101 includes an imaging lens unit 110, a rotary optical filter 111, a CCD type imaging device (hereinafter referred to as CCD) 112, an information processing unit 113, a visible light source 114, a liquid crystal unit 115, a projection lens unit 116, and a near infrared LED 121. , 122, 123 are accommodated.

  The illumination means 401 is composed of near-infrared LEDs 121, 122, and 123, and irradiates the arm 109 with near-infrared light. The emission periods of the near-infrared LEDs 121, 122, and 123 coincide with the period during which the near-infrared transmission filter 303 (see FIG. 3) of the rotary optical filter 111 constituting the imaging unit 402 passes through the imaging optical axis. Instructed by the image processing means 403.

  The information processing unit 113 includes an image processing unit 403 and an input / output unit 405.

  The visible light source 114, the liquid crystal unit 115, and the projection lens unit 116 constitute the projection unit 404, and are commonly used 3LCD projectors. Projection image information 414 from the image processing means 403 is transferred to the liquid crystal unit 115, and light from the visible light source 114 serving as a backlight is irradiated to the liquid crystal unit 115. Therefore, an image in which the blood vessel position displayed on the liquid crystal unit 115 is emphasized is projected onto the arm 109 via the projection lens unit 116 and appears on the arm 109 as a projected blood vessel image 118.

  The imaging lens unit 110, the rotary optical filter 111, and the CCD 112 constitute the imaging means 402. The imaging lens unit 110, the rotary optical filter 111, and the two types of wavelength light that are separated by the rotary optical filter 111 after taking in the reflected light from the arm 109. Obtained by the CCD 112. Here, the CCD 112 having a high spectral sensitivity with respect to the wavelength region from visible light to near infrared light is used. The two types of wavelength light that the rotary optical filter 111 separates are near-infrared wavelength light and visible wavelength light.

  FIG. 3 is a configuration diagram of a rotary optical filter in the blood vessel position presentation device according to the first embodiment of the present invention. 3 is arranged between the imaging lens unit 110 and the CCD 112, and rotates around the rotation axis 301 at a constant angular velocity. The hollow portion 302 is a hollow state where nothing exists, and the near-infrared transmission filter 303 is a filter that transmits only light having a near-infrared wavelength.

  The optical axis from the imaging lens unit 110 to the CCD 112 passes through the cavity 302 for 9 frame times and through the near-infrared transmission filter 303 for 3 frame times. Here, the frame time is a time for the CCD 112 to capture one image. For example, if the CCD 112 can capture 30 frames per second, one frame time is about 33 milliseconds. The near-infrared LEDs 121, 122, and 123 constituting the illumination unit are driven for a time when the optical axis from the imaging lens unit 110 to the CCD 112 passes through the near-infrared transmission filter 303, and the near-infrared light 421 is irradiated to the arm 109. The Therefore, the CCD 112 acquires an image based on light of near-infrared wavelength among the reflected light from the arm 109 during the three frame times. In the 9 frame time, an image based on light having a visible wavelength and a near infrared wavelength is acquired.

  The image processing means 403 uses the image of the second frame among the three frames based on the near-infrared wavelength light as near-infrared image information, and uses nine frames based on the visible and near-infrared light. Of the images, the third, third, and eighth frames are used as visible image information.

  In FIG. 3, the hollow portion 302 is in a hollow state where nothing exists, but a visible light transmitting filter that transmits only a visible wavelength or a near infrared cut filter that cuts near infrared light may be provided. When such a filter is provided, visible image information that is not affected by near-infrared wavelength light can be acquired as image information when the near-infrared light 421 is not irradiated.

  FIG. 4 is an internal block diagram of the image processing unit 403 in the blood vessel position presentation device according to the first embodiment of this invention. 4 includes a control unit 800, a feature extraction unit 801, an enhanced image generation unit 802, a blood vessel enhanced image storage unit 803, a selector unit 804, a near infrared feature information first storage unit 805, and a near infrared feature information. A second storage unit 810, a visible feature information storage unit 806, a selector unit 807, a displacement detection unit 808, an image correction unit 809, and an image composition unit 811 are configured.

  The control unit 800 controls the operation of each unit by recognizing whether the biometric captured image information 413 is near-infrared image information or visible image information based on the flag information 412. Here, in particular, as the control signal related to the data flow, the selector unit 804 selects either the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803 or the composite image information generated by the image composition unit 811. The selection signal 821 indicating whether or not and the selector means 807 is either the visible feature information stored in the visible feature information storage means 806 or the near infrared feature information stored in the near infrared feature information first storage means. FIG. 4 shows two types of control signals, that is, a selection signal 822 indicating whether or not to be selected.

  The feature extraction unit 801 generates feature information by extracting features of the biometric image information 413 input from the imaging unit. As will be described in detail later, as feature information, blood vessel pattern information related to a blood vessel route and a blood vessel branch point, optimal puncture region information that means a high linearity and thick region in the blood vessel pattern information, and affixed to the arm Special seal position information is included.

  The emphasized image generation unit 802 generates blood vessel emphasized image information that emphasizes the presence of a blood vessel based on blood vessel pattern information that is feature information generated by the feature extraction unit 801.

  The blood vessel emphasized image storage unit 803 stores the blood vessel emphasized image information generated by the emphasized image generation unit 802, and updates the stored blood vessel emphasized image information as the blood vessel emphasized image information again by the image correcting unit 809. It is something to remember.

  The near-infrared feature information first storage unit 805 stores feature information generated from the near-infrared image information that is the biometric captured image information 413 by the feature extraction unit 801, and the visible feature information storage unit 806 is a feature. The extraction unit 801 stores the feature information generated from the visible image information that is the biological imaged image information 413. The near-infrared feature information second storage unit 810 temporarily stores the feature information before the arm movement stored in the near-infrared feature information first storage unit when detecting the movement of the arm. Is.

  The selector unit 807 selects either the visible feature information stored in the visible feature information storage unit 806 or the near infrared feature information stored in the near infrared feature information first storage unit in accordance with the selection signal 822. belongs to.

  The positional deviation detection means 808 compares the feature information from the selector means 807 with the feature information from the near-infrared feature information first storage means 805, detects the deviation of the positional information included in the feature information, and detects the deviation direction and deviation. A quantity is generated as a vector.

  The image correction unit 809 generates image information obtained by shifting the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803 by a vector generated by the position deviation detection unit 808.

  The image synthesizing unit 811 synthesizes the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803 and the input data such as image information and character string information input from the outside via the input / output unit 405. This generates synthetic image information.

  The selector 804 selects either the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803 or the synthesized image information generated by the image synthesizing unit 811 in accordance with the selection signal 821, and outputs the projection image information 414 as output. Is to do.

  Next, the schematic operation of the blood vessel position presentation device according to the first embodiment of the present invention will be described. The image processing unit 403 first receives near-infrared image information as the living body captured image information 413 in a state in which the near-infrared light 421 is intermittently irradiated, and the feature extraction unit 801 uses the near-infrared image information as a blood vessel. The blood vessel pattern information is generated by extracting the features of the blood vessel, and the blood vessel pattern information is stored in the near-infrared feature information first storage unit 805. At the same time, the enhanced image generation unit 802 extracts the blood vessel emphasized image information from the blood vessel pattern information. The blood vessel enhanced image information is generated and stored in the blood vessel enhanced image storage means 803. The blood vessel enhanced image information stored in the blood vessel enhanced image storage unit 803 is selected by the selector unit 804 and transferred to the projection unit 404 as projection image information 414.

  Based on the projection image information 414, the projection unit 404 projects a projected blood vessel image 118 indicating a blood vessel onto the arm 109. The projected blood vessel image 118 is picked up by the image pickup means 402 during a period when the near-infrared light 421 is not irradiated on the arm, and the picked-up visible image information is transferred to the image processing means 403 as biological image pickup image information 413. The feature extraction unit 801 extracts the features of the blood vessel image projected on the arm from the visible image information to generate blood vessel pattern information, and stores the blood vessel pattern information in the visible feature information storage unit 806. The misregistration detection unit 808 shifts the near-infrared feature information stored in the near-infrared feature information first storage unit 805 by how much the visible feature information stored in the visible feature information storage unit 806 is shifted in what direction. And the shift direction and shift amount are generated as a first vector. The image correcting unit 809 generates corrected image information obtained by shifting the blood vessel emphasized image information based on the near-infrared image information stored in the blood vessel emphasized image storage unit 803 by the vector amount in the direction of the first vector. The corrected image information is updated and stored in the blood vessel emphasized image storage unit 803 as new blood vessel emphasized image information, and the stored blood vessel emphasized image information is selected by the selector unit 804 and projected as projection image information 414. 404 is projected to the arm 109 by the projection means 404. This series of processing functions so that the projected blood vessel image 118 reflected on the arm and the blood vessel 117 of the arm coincide.

  The series of processing is repeated several times, and when the amount of displacement generated by the displacement detection means 808 is considered to be zero, it is determined that the projected blood vessel image 118 reflected on the arm and the blood vessel 117 of the arm coincide with each other, and Terminate the process. The processing so far is hereinafter referred to as calibration. After the calibration is completed, unless the arm 109 moves, the projected blood vessel image 118 reflected on the arm and the blood vessel 117 of the arm coincide with each other.

  After the calibration is finished, the projected blood vessel image 118 reflected on the arm and the blood vessel 117 of the arm do not coincide with the movement of the arm 109, so it is necessary to correct the projection image information 414 in accordance with the movement of the arm 109. This processing is hereinafter referred to as motion correction processing. Hereinafter, the motion correction process will be described. The feature extraction unit 801 that has received near-infrared image information as the living body captured image information 413 in a state in which the near-infrared light 421 is intermittently irradiated extracts a blood vessel feature from the near-infrared image information to obtain a blood vessel pattern. Information is generated, and the blood vessel pattern information is stored in the near-infrared feature information first storage means 805. Next, similarly, when near-infrared image information is received as the living body captured image information 413, the feature information stored in the near-infrared feature information first storage unit 805 is stored in the near-infrared feature information second storage unit 810. The feature extraction unit 801 extracts blood vessel features from the near-infrared image information to generate blood vessel pattern information, and stores the blood vessel pattern information in the near-infrared feature information first storage unit 805. The misregistration detection unit 808 stores the near-infrared feature information first storage unit 805 with respect to the near-infrared feature information (feature information before the arm moves) stored in the near-infrared feature information second storage unit 810. It is detected in which direction and how much the obtained near-infrared feature information (feature information after the arm has moved) is displaced, and the displacement direction and the displacement amount are generated as a second vector. The image correcting unit 809 generates corrected image information obtained by shifting the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803 at the time of the end of the calibration by the vector amount in the direction of the second vector, The corrected image information is updated and stored in the blood vessel emphasized image storage unit 803 as new blood vessel emphasized image information, and the stored blood vessel emphasized image information is selected by the selector unit 804 to the projection unit 404 as projection image information 414. The image is transferred and projected onto the arm 109 by the projection unit 404. Through this series of processing, the projected blood vessel image 118 reflected on the arm functions so as to always coincide with the blood vessel 117 of the arm that moves according to the movement of the arm.

  Therefore, as shown in FIG. 1, the projected blood vessel image 118 can be projected onto the portion of the blood vessel 117, and the doctor or nurse can recognize that the blood vessel exists in the portion of the projected blood vessel image 118.

  The calibration process may be temporarily performed during the motion correction process. Further, as the feature information, for example, a blood vessel branch point may be used, and the position deviation detection unit 808 may detect a position deviation of the blood vessel branch point. Alternatively, for example, a special sticker affixed to the arm is detected by the feature extraction unit 801, and the position of the special seal is used as the feature information, and the positional deviation detection unit 808 detects the deviation of the position of the special seal. You may do. Alternatively, for example, the center point of the optimum puncture area that is a thick and highly linear area from the blood vessel pattern information extracted by the feature extraction unit 801 is used as the feature information, and the positional deviation detection unit 808 uses the center point of the optimum puncture area. You may detect the position shift of a center point.

  The input / output unit 405 receives, for example, patient infusion information and infusion date information from the outside. The received information is processed into sub-image information such as image information or character string information and sent to the image processing means 403 as input data 416. The sub-image information is received by the image composition means 811 in the image processing means 403. It is combined with the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803, transferred as projection image information 414 to the projection unit 404, and projected onto the arm 109 by the projection unit 404. Therefore, the patient's infusion information and infusion date / time information are displayed on the arm, so that an effect of preventing medical errors can be obtained.

  Further, the input / output unit 405 can transfer the blood vessel emphasized image information held by the image processing unit 403 as output data 416 to the outside as communication information 415 via the input / output unit 405. A terminal or the like outside the blood vessel position presentation device receives the communication information 415, restores the original blood vessel emphasized image information, and the doctor sees the restored blood vessel emphasized image, and the observation information and instruction information are displayed on the blood vessel position presentation device side. By sending to, more appropriate treatment can be performed. In addition, the observation information and the instruction information may be transmitted to the input / output unit 405 as communication information 415 by a communication unit such as a telephone line. In that case, similarly, the finding information and the instruction information are processed into sub-images such as image information or character string information by the input / output unit 405 and sent to the image processing unit 403 as input data 416, and the image in the image processing unit 403 is processed. The image is combined with the blood vessel emphasized image information by the combining unit 811, transferred to the projection unit 404 as projection image information 414, and projected onto the arm 109 by the projection unit 404. Thereby, finding information and instruction information from a remote place can be easily obtained and disclosed.

  FIG. 5 is a diagram for explaining the blood vessel position detection processing of the feature extraction unit 801 and the processing of the emphasized image generation unit 802 in the blood vessel position presentation device according to the first embodiment of this invention.

  An image E (501) shown in FIG. 5A is a near-infrared image or a visible image corresponding to the biometric image information 413, and a blood vessel 502 is shown. Here, the case where the image E (501) is a near-infrared image will be described. The feature extraction unit 801 scans each horizontal line 504 of the image E (501), and generates a luminance graph of each pixel of the horizontal line with the horizontal axis representing one horizontal line and the vertical axis representing luminance. For example, when the horizontal line 504 intersects the blood vessel 502, a luminance graph 507 shown in FIG. Here, the pixel luminances 505 and 506 are respectively the first pixel luminance and the last pixel luminance in the blood vessel vicinity 503 on the horizontal line scanning. The luminance graph 507 is compared with a predetermined luminance threshold value TH1, and the pixel positions A3 and A4 closest to the position where the luminance graph 507 and the luminance threshold value TH1 intersect are regarded as the boundary position of the blood vessel 502, and between the pixel positions A3 and A4. And the pixel position P closest to the midpoint of the pixel positions A3 and A4 are stored. When all the horizontal lines are scanned, the number of pixels between the pixel positions A3 and A4 of each line and the midpoint pixel position P of the pixel positions A3 and A4 are held as blood vessel pattern information.

  When generating the blood vessel emphasized image information using the blood vessel pattern information of the near-infrared image information, the emphasized image generating unit 802 calculates the luminance of the pixel between the pixel positions A3 and A4 detected as the boundary position of the blood vessel 502. Blood vessel emphasized image information is generated in which the luminance is uniformly increased and the other pixel luminances are set to zero. If the projection unit 404 has color display capability, for example, the pixel color between the pixel positions A3 and A4 may be uniformly bright red, and the other pixel colors may be black.

  FIG. 6 is a diagram illustrating a puncture region search in the blood vessel position presentation device according to the first embodiment of this invention. The puncture area search is performed by the feature extraction unit 801 based on the blood vessel pattern information.

  An image 601 shown in FIG. 6A is a near-infrared image or a visible image corresponding to the biometric image information 413, and blood vessels 603, 604, and 605 are shown. Based on this information, the blood vessel boundary is detected by the method described in FIG. 5, and blood vessel pattern information is generated. Specifically, first, every line from the upper left of the image 601 is scanned in order 602 from the top line to the bottom line, and the pixel position and blood vessel region where each line intersects the blood vessel And the midpoint pixel position of the blood vessel region are obtained. For example, in the horizontal scanning line 606, the number of pixels LK between K1 and K2 where the line intersects the blood vessel boundary, the number of pixels LS, S1 between the midpoint pixel positions PK of K1 and K2, and S1 and S2. The midpoint pixel position PS from S2, the number of pixels LT between T1 and T2, and the midpoint pixel position PT between T1 and T2 are detected and stored as blood vessel pattern information of the horizontal scanning line 606. Similarly, when this process is performed on all lines, the thickness and center position of all blood vessels are generated as blood vessel pattern information.

  Blood vessel pattern information is managed in units of blood vessels divided at branch points. In the example of FIG. 6, as shown in FIG. 6B, a blood vessel list 1 indicated by a dotted line route from the center position PK0 to PK399, a blood vessel list 2 indicated by a dotted line route from the center position PS0 to PS300, and the center position It is managed by a blood vessel list 3 indicated by a dotted line route from PT 170 to PT 300 and a blood vessel list 4 indicated by a dotted line route from central position PU 300 to PU 399. In FIG. 6B, PK0 and PS0 mean the center position of the blood vessel on the 0th line, and the thicknesses of the blood vessels at the PK0 position and the PS0 position are LK0 and LS0, respectively. PS300, PT300, and PU300 are blood vessel branch points on the 300th line. In this example, the image 601 is represented by horizontal 640 pixels and vertical 400 pixels.

  Next, in order to extract a region suitable for puncture, a plurality of points with high linearity of the dotted line connecting the center positions are extracted as sublists from each blood vessel list, and the average of the thickness of the blood vessels in each sublist N sub-lists (N is a natural number) are selected in order from the largest value. The area specified by the sublist selected in this way is set as an area suitable for puncture. In this example, two sublists are selected as the optimum puncture areas 611 and 612.

  The optimal puncture region extracted in this manner may be superimposed on the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803 and projected onto the arm 109, for example.

  FIG. 7 is a diagram for explaining the operation of detecting the amount of displacement in the blood vessel position presentation device according to the first embodiment of this invention. The position shift amount is detected by the position shift detection unit 808 during the calibration and the motion correction process. Hereinafter, the positional deviation information is expressed by a vector.

  First, the case of the motion correction process will be described as an example. As shown in FIG. 7A, a special sticker is pasted on the surface of the living body in the vicinity of a place to be punctured in advance, and a special sticker image 704 is shown. This special seal is made of a material that extremely fluoresces or absorbs near-infrared light when exposed to near-infrared light.

  It is assumed that a near-infrared image captured by the illumination unit 401 when irradiating near-infrared light is in the captured image region 700. At this time, when the feature extraction unit 801 detects the pixel position of the special seal image 704 or the blood vessel branch point 703 in the captured image region 700, the feature extraction unit 801 stores the pixel position in the near-infrared feature information first storage unit 805. The position detection of the special seal image is performed by the same method as the method of detecting the luminance change of the blood vessel portion shown in FIG.

  When the living body moves or shakes, in the near-infrared image captured at the next time, the positions of the blood vessels 701 and 702 move to the blood vessels 711 and 712, respectively, and similarly, the blood vessel branch point 703 moves to the blood vessel branch point 713. The special seal image itself also moves from the special seal image 704 to the special seal image 714. Similarly, when the feature extraction unit 801 detects the pixel position of the special seal image 714 or the blood vessel branch point 713 in the captured image region 700, the feature extraction unit 801 stores the special seal image 714 stored in the near infrared feature information first storage unit 805. After the pixel position of the seal image 704 or the blood vessel branch point 703 is stored in the near infrared feature information second storage unit 810, the pixel position of the special seal image 714 or the blood vessel branch point 713 is stored in the near infrared feature information first memory. The data is stored in the means 805. Next, the misalignment detection unit 808 detects the special seal from the position of the special seal image 704 based on the information stored in the near infrared feature information first storage unit 805 and the near infrared feature information second storage unit 810. A vector to the position of the image 714 or a vector from the position of the blood vessel branch point 703 to the position of the blood vessel branch point 713 is calculated. For example, if the position of the blood vessel branch point 713 is shifted by 50 pixels in the horizontal left direction and 20 pixels in the vertical downward direction with respect to the position of the blood vessel branch point 703, the positional shift vector is (−50, +20).

  The position shift vector detected in this way is used for correcting the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803. That is, the image correction unit 809 uses the blood vessel enhancement image information obtained by shifting the blood vessel enhancement image information stored in the blood vessel enhancement image storage unit 803 by the position shift vector as the blood vessel enhancement image information after motion correction. It is updated and stored in the image storage means 803 and transferred to the projection means 404 as projection image information 414.

  The positional deviation vector at the time of calibration is detected as follows. In this case, blood vessels 701 and 702 in FIG. 7A are blood vessels reflected in a near-infrared image captured at the start of calibration, and blood vessels 711 and 712 are visible in a visible image obtained by capturing a blood vessel image projected on the arm. It shall be a blood vessel. As an initial state of the apparatus, the blood vessel 117 of the arm 109 and the projected blood vessel image 118 on the arm 109 need to coincide with each other. Therefore, the position from the blood vessel shown in the near-infrared image to the blood vessel shown in the visible image A shift vector is detected by the same method as in the motion correction process, and the image correction unit 809 detects the blood vessel emphasized image information based on the near-infrared image stored in the blood vessel emphasized image storage unit 803. The image information shifted by the amount of the displacement vector in the direction opposite to the vector is updated and stored again in the blood vessel emphasized image storage unit 803, and the blood vessel emphasized image information stored in the blood vessel emphasized image storage unit 803 is also used as the projection image information 414. To the projection means 404.

  Special seals that fluoresce well or absorb near-infrared light are used, but those that have a property of fluorescing or absorbing visible light well. Also good. In this case, the position shift of the special seal is vectorized based on the visible image information captured when the illumination unit 401 is not irradiating near infrared light. In this case, a separate visible light source may be provided as the illuminating means 401, and the living body may be irradiated with visible light from the visible light source during a period when the near infrared light source is not emitting light.

  In the above description, the position of the special seal or the position of the blood vessel branch point attached to the living body is used for detecting the position shift, but it may be performed using the puncture region described with reference to FIG. In this case, as illustrated in FIG. 7B, the image processing unit 403 generates a displacement vector by detecting a displacement of the puncture region generated from blood vessel pattern information before and after the living body moves. . In the example of FIG. 7B, the center point 705 of the optimum puncture area 611 before the living body moves moves to the center point 715 of the optimum puncture area 717 after the living body moves. The vector to point 715 is calculated. Note that the motion search area 716 in FIG. 7B means a range in which the center point 715 of the puncture area in the vicinity of the center point 705 is searched.

(Second Embodiment)
FIG. 8 is a diagram showing the arrangement of the blood vessel position presentation device according to the second embodiment of this invention. The blood vessel position presentation apparatus according to the second embodiment is the same as the blood vessel position presentation apparatus according to the first embodiment except for the configuration of the projection unit 404. Description and description of the pedestal 107 are omitted.

  8 includes an imaging lens unit 110, a rotary optical filter 111, a CCD 112, an information processing unit 113, a visible light source 114, a color wheel optical unit 202, a DMD (Digital Micromirror Device) 201, a projection lens unit 116, Near-infrared LEDs 121, 122, 123 are accommodated. Among these, near-infrared LEDs 121, 122, and 123 that constitute the illumination means 401, information processing means 113 that constitute the image processing means 403 and input / output means 405, an imaging lens unit 110 that constitutes the imaging means 402, and a rotary optical filter 111 and CCD 112 are the same as those shown in FIG.

  The projection unit 404 in this example includes a visible light source 114, a color wheel optical unit 202, a DMD 201, and a projection lens unit 116, and is a configuration generally used in a DLP (Digital Light Processing) type projector. . The light from the visible light source 114 serving as a backlight is decomposed into light of three primary colors R (red), G (green), and B (blue) by the color wheel optical unit 202, and the light of each primary color is irradiated to the DMD 201. Is done. In addition, when acquiring living body captured image information 413 as visible image information without irradiating near-infrared light 421, color information other than a blood vessel image projected on the living body can be acquired with high accuracy. The wheel optical unit 202 may include a hollow part for allowing visible light from the visible light source 114 to pass as it is in addition to the color filter for splitting the light into R, G, and B.

  Projected image information 414 from the image processing means 403 is transferred to the DMD 201, and the DMD 201 controls the pixel unit based on the brightness of each pixel to generate reflected light corresponding to each pixel, and the reflected light is projected to the projection lens unit. Projected onto the arm 109 via 116. Therefore, the projected light appears on the arm 109 as a blood vessel projection image 118.

(Third embodiment)
FIG. 9 is a diagram showing the arrangement of the blood vessel position presentation device according to the third embodiment of this invention. Since the blood vessel position presentation apparatus of the third embodiment is the same as the blood vessel position presentation apparatus of the first embodiment except for the configuration of the imaging unit 402 and the projection unit 404, description and explanation of a functional block diagram; Description and description of the support means 100 and the base 107 are omitted.

  The housing 101 in FIG. 9 includes an imaging / projection shared lens unit 901 having a common imaging lens unit 110 and projection lens unit 116, a rotary optical filter 111, a CCD 112, an information processing unit 113, a visible light source 114, and a liquid crystal display unit 115. , Near-infrared LEDs 121, 122, 123, and a prism 902 for separating light to be imaged and light to be projected are housed. Among these, the near-infrared LEDs 121, 122, 123 constituting the illumination means 401, the image processing means 403, and the information processing means 113 constituting the input / output means 405 are the same as those shown in FIG. To do.

  The imaging unit 402 in this example includes an imaging / projection shared lens unit 901, a prism 902, a rotary optical filter 111, and a CCD 112. The projection unit 404 is a 3LCD projector that includes the visible light source 114, the liquid crystal unit 115, the prism 902, and the imaging / projection shared lens unit 901.

  Near-infrared reflected light from the arm 109 is captured by the imaging / projection shared lens unit 901 by irradiation of near-infrared light from the near-infrared LEDs 121, 122, and 123. On the optical axis of the incident light, a prism 902 having a reflection layer that reflects the incident light toward the CCD 112 in a direction 90 degrees with respect to the optical axis of the incident light is arranged, whereby the reflected light from the arm 109 is reflected. The image is picked up by the CCD 112 through the rotary optical filter 111.

  Projection image information 414 obtained by image enhancement of the blood vessel generated by the image processing unit 403 constituting the information processing unit 113 is transferred to the liquid crystal unit 115, and the liquid crystal unit 115 is irradiated with light from the visible light source 114 serving as a backlight. . The blood vessel emphasized image light from the liquid crystal unit 115 is projected onto the arm 109 via the prism 902 and the imaging / projection shared lens unit 901, and a blood vessel projection image 118 showing a blood vessel appears on the arm 109. Note that the prism 902 arranged on the optical axis of projection has a reflecting layer that is a half mirror, and the light from the liquid crystal unit 115 passes through as it is.

  As described above, since the imaging optical system and the projection optical system are common, the blood vessels 117 of the arm 109 are adjusted by adjusting the distances between the liquid crystal unit 115 and the prism 902 and between the CCD 112 and the prism 902 to be equal. The projected blood vessel image 118 can be accurately superimposed.

  That is, in the blood vessel position presentation device according to the first embodiment and the second embodiment, since the imaging lens unit 110 of the imaging unit 402 and the projection lens unit 116 of the projection unit 404 are basically different, the injection is punctured. Since an angle is generated between the optical axis for photographing the portion and the optical axis for projection, the projected blood vessel image 118 projected on the arm 109 is slightly distorted, but is projected in the blood vessel position presentation device of the third embodiment. The projected blood vessel image 118 and the actual blood vessel 117 almost coincide and overlap.

  As described above, in the blood vessel position presentation device of the present invention, the reflected light of the near infrared light is captured as an image, and the shape of the blood vessel that is difficult to be seen as a visible image is projected on the portion where the patient's injection is punctured. Doctors and nurses can visually check a blood vessel at a portion to puncture an injection even if it is a blood vessel that is difficult to see visually, and can perform an injection by a two-handed operation.

  In the above explanation, the case where the blood vessel position is presented as biological feature information is taken as an example, but for example, by reacting an antibody with a radioisotope to a specific cancer cell so as to be used for scintillation, It can also be applied to a device that recognizes biological information of cancer cells and projects it. In this way, the surgical operation can be easily performed by projecting and displaying the position of the cancer cell.

  The biological information presentation device of the present invention captures a captured image of a living body illuminated with illumination light of a predetermined wavelength, detects feature information of the living body that is difficult to see visually, generates an emphasized image, and projects it as a visible image on the living body Therefore, it is useful as a biological information presentation apparatus that can accurately and quickly confirm biological feature information with a simple operation.

Schematic functional block diagram of the blood vessel position presentation device according to the first embodiment of the present invention The figure which shows the positional relationship with the biological body of the blood vessel position presentation apparatus of the 1st Embodiment of this invention. The block diagram of the rotation type optical filter in the blood vessel position presentation apparatus of the 1st Embodiment of this invention The internal block diagram of the image-processing means in the blood vessel position presentation apparatus of the 1st Embodiment of this invention The figure explaining the blood vessel position detection process of the feature extraction means in the blood vessel position presentation apparatus of the 1st Embodiment of this invention, and the process of an emphasis image generation means The figure explaining the puncture area search in the blood vessel position presentation apparatus of the 1st Embodiment of this invention The figure explaining the detection operation | movement of the positional offset amount in the blood vessel position presentation apparatus of the 1st Embodiment of this invention. The figure which shows arrangement | positioning of the blood vessel position presentation apparatus of the 2nd Embodiment of this invention. The figure which shows arrangement | positioning of the blood vessel position presentation apparatus of the 3rd Embodiment of this invention. Configuration diagram of a conventional vein exploration device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 2 Light emitting element 3 Light receiving element 4 Battery 5 Power supply operation switch 6 Display element 7 Arrow 8 Clip 100 Support means 101 Case 102 Support rod 103 Height fixing part 104 Height adjustment support bar 105 Power supply part 106 Outlet cable 107 Base 108 Clip 109 Arm 110 Imaging Lens Unit 111 Rotating Optical Filter 112 CCD Image Sensor (CCD)
113 Information processing means 114 Visible light source 115 Liquid crystal unit 116 Projection lens unit 117 Blood vessel 118 Projected blood vessel image 121 Near infrared LED
122 near infrared LED
123 Near-infrared LED
131 Angle changing part 201 DMD
202 Color Wheel Optical Unit 301 Rotating Shaft 302 Cavity 303 Near Infrared Transmission Filter 401 Illuminating Means 402 Imaging Means 403 Image Processing Means 404 Projecting Means 405 Input / Output Means 411 Instruction 412 Flag Information 413 Biological Imaging Image Information 414 Projected Image Information 415 Communication Information 416 Input / output data 421 Near-infrared light 422 Reflected light from living body 423 Projected light 501 Image E
502 Blood vessel 503 Near blood vessel 504 Horizontal line 505 Pixel luminance 506 Pixel luminance
507 Luminance graph 601 Image 602 Order 603 Blood vessel 604 Blood vessel 605 Blood vessel 606 Horizontal scanning line 611 Optimal puncture region 612 Optimal puncture region 700 Captured image region 701 Blood vessel 702 Blood vessel 703 Blood vessel branch point 704 Special seal image 705 Center point
711 Blood vessel 712 Blood vessel 713 Blood vessel branch point 714 Special seal image 715 Center point 716 Motion search area 717 Optimal puncture area 800 Control means 801 Feature extraction means 802 Enhanced image generation means 803 Blood vessel enhancement image storage means 804 Selector means 805 Near infrared feature information First storage means 806 Visible feature information storage means 807 Selector means 808 Misalignment detection means 809 Image correction means 810 Near infrared feature information second storage means 811 Image composition means 821 Selection signal 822 Selection signal 901 Imaging and projection shared lens unit 902 Prism

Claims (12)

A biometric information presentation device that presents biometric feature information as an image,
Illuminating means for irradiating the living body with illumination light of a predetermined wavelength for photographing the feature information;
Imaging means for photographing the living body and acquiring living body captured image information;
Image processing means for detecting the feature information based on the biometric imaged image information and converting the detected feature information into an imaged projection image information;
A biological information presentation apparatus comprising: a projection unit that projects a projection image based on the projection image information onto the biological surface. The biological information presentation device according to claim 1,
The imaging unit acquires visible image information by capturing the projection image projected on the living body by the projection unit;
The image processing means detects a positional shift between the feature information detected based on the biometric captured image information and the feature information detected based on the visible image information, and based on the positional shift, the projection A biological information presentation apparatus that corrects the projection image information so that a position of the feature information of the projection image projected on the surface of the biological body matches a position of the feature information of the biological body. The biological information presentation device according to claim 2,
The illumination means intermittently irradiates the living body with the illumination light,
The said imaging means is a biological information presentation apparatus which detects the said feature information based on the said biometric image image information at the time of the said illumination light irradiation. The biological information presentation device according to claim 2 or 3,
The image processing means detects a positional shift between the feature information based on the biometric image information acquired continuously as movement information of the living body, and corrects the projection image information based on the movement information. Information presentation device. The biological information presentation device according to any one of claims 1 to 4,
The imaging means and the projection means are biological information presentation devices that use the same lens. The biological information presentation device according to any one of claims 1 to 5,
The characteristic information is a blood vessel position;
The illumination means irradiates near infrared wavelength illumination light,
The imaging means has a high near-infrared wavelength spectral sensitivity, and the near-infrared image information that is the in-vivo captured image information at the time of illumination light irradiation, and the in-vivo imaging at the time of non-irradiation of the illumination light Get visible image information that is image information,
The image processing means generates projection image information in which a blood vessel image is image-enhanced based on the near-infrared image information,
The biological information presenting apparatus that projects the visible image on the biological surface based on the projected image information. The biological information presentation device according to claim 6,
The image processing means
Feature extraction means for generating the feature information from the biometric image information;
Among the feature information, enhanced image generation means for generating blood vessel emphasized image information from blood vessel position shape information,
Blood vessel enhanced image storage means for storing the blood vessel enhanced image information and outputting the stored blood vessel enhanced image information as the projection image information to the projection means;
A near-infrared feature information first storage unit that stores the feature information generated by the feature extraction unit when the biometric image information is near-infrared image information obtained by imaging near-infrared light from a living body;
Visible feature information storage means for storing the feature information generated by the feature extraction means when the biometric image information is visible image information obtained by imaging visible light from a living body;
Prior to storing the feature information generated by the feature extraction means in the near-infrared feature information first storage means when the biological image information is near-infrared image information obtained by imaging near-infrared light from a living body. , Near infrared feature information second storage means for storing the feature information stored in the near infrared feature information first storage means,
From the feature information stored in the visible feature information storage means and the feature information stored in the near-infrared feature information first storage means, a position shift of the feature information is detected, and the direction and amount of the position shift From the feature information stored in the near-infrared feature information second storage means and the feature information stored in the near-infrared feature information first storage means. And a misregistration detecting means for generating a misregistration direction and a misregistration amount as a second vector;
Generating corrected image information obtained by moving the blood vessel emphasized image information stored in the blood vessel emphasized image storage means in the direction of the first vector or the second vector by the amount of the vector; A biometric information presentation device comprising: an image correction unit that updates and stores the blood vessel emphasized image storage unit as new blood vessel emphasized image information. The biological information presentation device according to claim 7,
The feature information generated by the feature extraction means is a position shape of a blood vessel, a blood vessel branch point, a position of an image of a special sticker attached to a living body, or a center point of an optimum puncture region,
The biological information presenting apparatus, wherein the positional deviation detection means detects a change in the position of the feature information. The biological information presentation device according to any one of claims 1 to 8,
The illuminating means, the imaging means, the image processing means, and a housing for housing the projection means;
A biological information presentation apparatus comprising support means for supporting the housing at a predetermined position with respect to the living body. The biological information presentation device according to claim 9,
Pedestal means for placing the living body,
The biological information presentation apparatus, wherein the support means is fixed to the pedestal means. The biological information presentation device according to claim 9 or 10,
The biological information presentation device in which the support means is capable of adjusting an angle or a height of the housing with respect to the living body. The biological information presentation device according to any one of claims 1 to 11,
An input / output means for outputting information held by the image processing means to the outside and receiving information from the outside;
The image processing means generates composite image information obtained by combining the projection image information and information from the outside,
The biological information presenting apparatus that projects the projection image based on the composite image information onto the biological surface.

Images