Blood vessel visualization component, blood vessel visualization device, blood vessel puncture system, and blood vessel visualization system

Abstract

This blood vessel visualization member (10A) visualizes a blood vessel (302) of an organism. The blood vessel visualization member (10A) comprises a sheet body (22) that can affix to a second surface (306) of a visualization target site (300). The sheet body (22) comprises: a wavelength conversion part (24) that includes a wavelength conversion material (28) for converting near-infrared light (l1) to visible light (l2); and an adhesion part (26) that is provided to the wavelength conversion part (24).

Description

Technical Field

[0001] The present invention relates to a blood vessel visualization member, a blood vessel visualization device, a blood vessel puncture system, and a blood vessel visualization system.

Background Art

[0002] For example, Japanese Patent Application Laid-Open No. 2017-64094 discloses a vein visualization device. The vein visualization device includes an irradiation unit, an imaging unit, image processing means, and a display unit. The irradiation unit irradiates near-infrared light onto the puncture target site of a patient. The imaging unit receives the reflected light of the near-infrared light irradiated onto the puncture target site that is reflected by the puncture target site to obtain a captured image of the puncture target site. The image processing means extracts veins from the captured image. The display unit displays the image processed by the image processing means.

Summary of the Invention

[0003] The above-described vein visualization device has a problem in that it has a large and complex configuration because a member for converting near-infrared light into an image is required.

[0004] An object of the present invention is to solve the above-described problems.

[0005] (1) A first aspect of the present invention is a blood vessel visualization member for visualizing a blood vessel of a living body, including a sheet body that can be attached to the surface of a visualization target site, the sheet body including a wavelength conversion part containing a wavelength conversion material that converts near-infrared light into visible light, and an adhesion part provided on the wavelength conversion part.

[0006] (2) The blood vessel visualization member according to item (1), wherein the wavelength conversion part is formed in a sheet shape, and the adhesion part is preferably provided on a surface or a side surface facing the thickness direction of the wavelength conversion part.

[0007] (3) The blood vessel visualization member according to item (1) or (2), wherein the sheet body preferably has flexibility.

[0008] (4) A blood vessel visualization member according to any one of items (1) to (3), wherein the sheet body is preferably provided with one or more notches connected to the outer circumference of the sheet body.

[0009] (5) A blood vessel visualization member according to any one of items (1) to (4), wherein the sheet body is preferably configured to allow liquid or gas to permeate in the thickness direction of the sheet body.

[0010] (6) A blood vessel visualization member according to any one of items (1) to (5), wherein the sheet body preferably has a puncture hole for inserting a medical device into the blood vessel.

[0011] (7) The blood vessel visualization member described in item (6) is preferably the sheet body having a fragile portion extending from the outer circumference of the sheet body to the puncture hole.

[0012] (8) A blood vessel visualization member according to any one of items (1) to (7), wherein the wavelength conversion section preferably comprises a support layer formed in sheet form from a material that does not contain the wavelength conversion material, and a conversion section body laminated on the support layer and formed from a material that contains the wavelength conversion material.

[0013] (9) The blood vessel visualization member described in item (8), wherein the main body of the conversion unit is preferably formed by coating the surface of the support layer.

[0014] (10) A blood vessel visualization member according to any one of items (1) to (7), wherein the wavelength conversion portion preferably has a portion formed in a sheet shape from a material including the wavelength conversion material.

[0015] (11) A blood vessel visualization member according to any one of items (1) to (10), wherein the wavelength conversion material preferably converts the near-infrared light having a wavelength greater than 700 nm and less than or equal to 2500 nm into visible light having a wavelength of 400 nm or more and less than or equal to 700 nm.

[0016] (12) A second aspect of the present invention is a blood vessel visualization device comprising a blood vessel visualization member described in any one of items (1) to (11), and an irradiation unit including a light source unit for irradiating the surface of the area to be visualized in the direction opposite to the surface to which the blood vessel visualization member is attached with near-infrared light.

[0017] (13) The vascular visualization device described in item (12), wherein the irradiation unit preferably has an irradiation support unit that supports the light source unit in a displaceable manner.

[0018] (14) A third aspect of the present invention is a vascular puncture system comprising a vascular visualization device as described in item (12) or (13) and a medical device for puncturing the blood vessel.

[0019] (15) A fourth aspect of the present invention is a vascular visualization system comprising: a vascular visualization device described in item (12) or (13); a camera for capturing a vascular image displayed on the vascular visualization member; and an image processing unit for analyzing the image captured by the camera.

[0020] According to the present invention, since a sheet body having a wavelength conversion unit is attached to the surface of the area to be visualized, near-infrared light transmitted through the area to be visualized can be converted into visible light by the wavelength conversion unit. As a result, a visible vascular image can be displayed on the wavelength conversion unit. In other words, the vascular visualization member can display a vascular image on the area to be visualized without using a member that converts near-infrared light into an image. Therefore, blood vessels can be visualized with a small and simple configuration.

[0021] Furthermore, since the blood vessel visualization component is attached to the surface of the area to be visualized, near-infrared light transmitted through the area to be visualized can be efficiently received by the wavelength conversion unit. Therefore, the blood vessel image can be displayed more clearly on the wavelength conversion unit. [Brief explanation of the drawing]

[0022] [Figure 1]FIG. 1 is a schematic configuration explanatory diagram of a blood vessel visualization system according to an embodiment of the present invention. [Figure 2] FIG. 2A is a bottom view of the blood vessel visualization device of FIG. 1. FIG. 2B is a plan view of the blood vessel visualization device of FIG. 1. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2B. [Figure 4] FIG. 4 is a schematic configuration explanatory diagram of a blood vessel puncture system according to an embodiment of the present invention. [Figure 5] FIG. 5A is a cross-sectional explanatory diagram of a blood vessel visualization member according to a first modification. FIG. 5B is a cross-sectional explanatory diagram of a blood vessel visualization member according to a second modification. FIG. 5C is a cross-sectional explanatory diagram of a blood vessel visualization member according to a third modification.

MODE FOR CARRYING OUT THE INVENTION

[0023] As shown in FIG. 1, a blood vessel visualization system 12 according to an embodiment of the present invention includes a blood vessel visualization device 13A, a camera 14, and an information processing device 16.

[0024] The blood vessel visualization device 13A visualizes the blood vessels 302 (see FIG. 3) of the visualization target site 300 of the living body. In the present embodiment, the visualization target site 300 is the hand of the human body. However, the visualization target site 300 may be a site such as the forearm, upper arm, foot, lower leg, or thigh of the human body.

[0025] In FIGS. 1 to 3, the blood vessel visualization device 13A includes a blood vessel visualization member 10A and an irradiation unit 20. The blood vessel visualization member 10A includes a sheet body 22 that can be attached to the surface of the visualization target site 300. When the visualization target site 300 is the hand of the human body, the sheet body 22 is attached to the back of the hand. The sheet body 22 has flexibility so as to be able to follow the surface shape of the visualization target site 300.

[0026] As shown in Figure 2B, the sheet body 22 is formed in a rectangular shape when viewed from the thickness direction of the sheet body 22. The length of one side of the sheet body 22 is set to, for example, 20 mm or more and 300 mm or less. The thickness of the sheet body 22 is set to, for example, 0.1 mm or more and 0.5 mm or less. The sheet body 22 is configured to allow both liquid and gas to permeate in the thickness direction of the sheet body 22.

[0027] Specifically, the sheet body 22 has a plurality of fine permeable holes (not shown) through which liquids and gases can pass. The sheet body 22 may be configured to allow liquid permeation in the thickness direction but not gas permeation. Alternatively, the sheet body 22 may be configured to allow gas permeation in the thickness direction but not liquid permeation. The sheet body 22 only needs to allow liquid or gas permeation in the thickness direction; the aforementioned permeable holes are not essential.

[0028] The shape and size of the sheet body 22 can be set as appropriate. For example, the sheet body 22 may be formed in a shape that follows the surface shape of the area to be visualized 300 when viewed from the thickness direction of the sheet body 22. Alternatively, the sheet body 22 may be formed in a circular shape or a polygonal shape (other than a quadrilateral shape) when viewed from the thickness direction of the sheet body 22.

[0029] In Figure 3, the sheet body 22 has a wavelength conversion section 24 and an adhesive section 26. The wavelength conversion section 24 may be transparent or opaque. The wavelength conversion section 24 includes a wavelength conversion material 28 (optical upconversion material) that converts near-infrared light L1 to visible light L2. The wavelength conversion material 28 converts near-infrared light L1 with a wavelength greater than 700 nm and less than or equal to 2500 nm to visible light L2 with a wavelength between 400 nm and 700 nm. The wavelength conversion material 28 includes, for example, an inorganic optical upconversion emitter or an organic optical upconversion emitter. The inorganic optical upconversion emitter has, for example, rare earth elements. The organic optical upconversion emitter has, for example, an organometallic complex or a polycyclic aromatic compound.

[0030] The wavelength conversion section 24 is formed into a sheet shape from a material containing the wavelength conversion material 28. Here, "material containing the wavelength conversion material 28" includes a material consisting only of the wavelength conversion material 28 and a mixed material obtained by mixing the wavelength conversion material 28 with other materials. In this embodiment, for example, the wavelength conversion section 24 is formed into a sheet shape from only the wavelength conversion material 28. However, the wavelength conversion section 24 may also be formed into a sheet shape from a mixed material.

[0031] The adhesive portion 26 is provided in layers on the surface of the wavelength conversion portion 24 facing the thickness direction. The adhesive portion 26 is formed by applying an adhesive (tack) to the surface of the wavelength conversion portion 24. Examples of adhesives used include acrylic, rubber (natural rubber, synthetic rubber), silicone, urethane, and vinyl ether adhesives. The adhesive portion 26 may be an adhesive sheet. The adhesive portion 26 may be transparent or opaque. The adhesive portion 26 transmits near-infrared light L1.

[0032] The adhesive portion 26 is provided on the entire surface of the wavelength conversion portion 24 facing the thickness direction. However, the adhesive portion 26 may be provided only on a portion of the surface of the wavelength conversion portion 24. In this case, the adhesive portion 26 may be a single continuous member or may consist of multiple members that are separated from each other.

[0033] The adhesive surface 30 of the adhesive portion 26 that faces in the opposite direction to the wavelength conversion portion 24 is provided with fine irregularities (not shown). This makes it easier to adhere the adhesive surface 30 to the visualization target portion 300 compared to when the adhesive surface 30 is formed flat.

[0034] As shown in Figure 2B, the sheet body 22 is provided with a plurality of notches 32 connected to the outer circumference of the sheet body 22. In this embodiment, the plurality of notches 32 are provided at each corner of the sheet body 22 and at the center of two opposite sides. Each notch 32 is a single continuous slit. The length of the notch 32 is set, for example, between 1 mm and 30 mm. The notches 32 penetrate the sheet body 22 in the thickness direction.

[0035] The notches 32 are not limited to linear extensions, but may also be triangular, semicircular, square, or the like. The sheet body 22 may have only one notch 32. The position, size, and shape of the notches 32 can be set as appropriate. In other words, the notches 32 may be provided on each side of the sheet body 22.

[0036] As shown in Figures 1, 2A, and 3, the irradiation unit 20 includes a substrate 34, a plurality of light source units 36, an irradiation support unit 38, a power supply line 40, and a power supply unit 42. The substrate 34 is flexible. The plurality of light source units 36 are attached to the substrate 34.

[0037] Each light source unit 36 ​​emits near-infrared light L1, which is greater than 700 nm and less than or equal to 2500 nm. The light source unit 36 ​​is, for example, a so-called chip-type light-emitting diode. However, the light source unit 36 ​​may also be a so-called lamp-type light-emitting diode or an organic light-emitting diode (OLED). The number, arrangement, size, and shape of the light source units 36 can be changed as appropriate.

[0038] The irradiation support section 38 supports the substrate 34 in a deformable manner. In other words, the irradiation support section 38 supports the multiple light source sections 36 in a displaceable manner. The power supply line 40 supplies power from the power supply unit 42 to each light source section 36. The power supply line 40 connects the power supply unit 42 and the substrate 34 to each other. The power supply unit 42 is, for example, a primary battery or a secondary battery (battery). The irradiation section 20 may be configured to wirelessly supply power from the power supply unit 42 to each light source section 36. In this case, the power supply line 40 is unnecessary.

[0039] As shown in Figure 1, the camera 14 captures a vascular image 400, which will be described later, displayed on the wavelength conversion unit 24. The camera 14 transmits the captured image to the information processing device 16. The camera 14 is connected to the information processing device 16 by wire. The camera 14 may also be connected to the information processing device 16 by wireless connection. Alternatively, the camera 14 may transmit the captured image to the information processing device 16 via an internet connection.

[0040] The information processing device 16 comprises an arithmetic unit 50, a storage unit 52, a display unit 54, and a speaker 56. The arithmetic unit 50 is composed of a processor (processing circuit) such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit).

[0041] The arithmetic unit 50 includes a control unit 58 and an image processing unit 60. The arithmetic unit 50 implements the control unit 58 and the image processing unit 60 by executing a program stored in the storage unit 52. The arithmetic unit 50 may implement at least a portion of the control unit 58 and the image processing unit 60 using an integrated circuit. Examples of integrated circuits include ASICs (Application Specific Integrated Circuits) and FPGAs (Field-Programmable Gate Arrays).

[0042] The storage unit 52 includes volatile memory and non-volatile memory. Examples of volatile memory include RAM (Random Access Memory). This volatile memory is used as the processor's working memory and temporarily stores data necessary for processing or calculations. Examples of non-volatile memory include ROM (Read Only Memory) and flash memory. This non-volatile memory is used as storage memory. Programs, tables, maps, etc., are stored in this non-volatile memory. At least a part of the storage unit 52 may be incorporated into the processor or integrated circuit described above.

[0043] The control unit 58 is responsible for the overall control of the information processing device 16. The control unit 58 stores the images received from the camera 14 in the storage unit 52. The image processing unit 60 analyzes the images stored in the storage unit 52. Specifically, the image processing unit 60 extracts, for example, changes in images taken before and after a predetermined medical procedure.

[0044] The display unit 54 displays images received from the camera 14, images processed by the image processing unit 60, etc. The speaker 56 generates alarm sounds, etc.

[0045] Next, the method of using the vascular visualization system 12 will be described. The vascular visualization system 12 is used, for example, to capture continuous or temporal changes in the same blood vessel 302 in the area to be visualized 300. Specifically, the vascular visualization system 12 is used, for example, to evaluate the effectiveness of a medical procedure (e.g., the efficacy of peripheral vasodilators, the effects of exercise therapy) by comparing the vascular images 400 of the target blood vessel 302 before and after the medical procedure.

[0046] In this embodiment, when using the blood vessel visualization system 12, the blood vessel visualization member 10A is attached to the area to be visualized 300 (the back of the hand in Figure 1, etc.) before performing a medical procedure. That is, the adhesive surface 30 of the sheet body 22 is attached to the second surface 306 of the area to be visualized 300. At this time, since the sheet body 22 is flexible, it deforms to follow the shape of the second surface 306 of the area to be visualized 300. In addition, by widening the cut portion 32 of the sheet body 22, it is possible to suppress the formation of wrinkles on the outer periphery of the sheet body 22.

[0047] Subsequently, with the first surface 304 of the area to be visualized 300 in contact with each light source unit 36 ​​of the irradiation unit 20, the power supply unit 42 is turned on. As a result, as shown in Figure 3, near-infrared light L1 is irradiated from the multiple light sources 36 toward the first surface 304 of the area to be visualized 300. The near-infrared light L1 penetrates the parts of the area to be visualized 300 other than the blood vessels 302. In other words, the near-infrared light L1 is absorbed by the hemoglobin in the blood within the blood vessels 302 of the area to be visualized 300. The transmitted light of the near-infrared light L1 that has passed through the area to be visualized 300 is converted into visible light L2 by the wavelength conversion material 28 of the wavelength conversion unit 24. Therefore, a visible blood vessel image 400 is displayed on the wavelength conversion unit 24 (see Figure 2B).

[0048] Next, the vascular image 400 displayed on the wavelength conversion unit 24 is captured by the camera 14. The image (still image or video) captured by the camera 14 is transmitted to the information processing device 16 and stored in the storage unit 52. Hereinafter, the image captured before performing the medical procedure may be referred to as the "first image". The first image may be stored in the storage unit 52 of the information processing device 16 via the internet instead of being stored in the storage unit of another computer. The control unit 58 determines, for example, whether the vascular image 400 is normal based on the first image, and if it is abnormal (for example, if blood flow may be obstructed due to stenosis), it generates an alarm sound from the speaker 56.

[0049] Subsequently, for example, a medical procedure is performed on the patient. After the medical procedure is performed, the vascular image 400 displayed on the wavelength conversion unit 24 is photographed by the camera 14 using the same method as described above. The image of the vascular image 400 after the medical procedure, taken by the camera 14, is transmitted to the information processing device 16 and stored in the storage unit 52. Hereinafter, the image taken after the medical procedure is performed may be referred to as the "second image". The second image may be stored in the storage unit 52 of the information processing device 16 via the internet instead of being stored in the storage unit of another computer. The control unit 58 determines, for example, whether the vascular image 400 is normal based on the second image, and if it is abnormal (for example, if blood flow may be obstructed due to stenosis), it generates an alarm sound from the speaker 56.

[0050] Next, the image processing unit 60 analyzes the first image and the second image to extract the parts that have changed between the two images. The control unit 58 displays the analysis results of the image processing unit 60 on the display unit 54. This allows the user (including the patient) to easily and accurately understand the effects of the medical procedure.

[0051] This embodiment provides the following effects.

[0052] According to this embodiment, with the sheet body 22 having the wavelength conversion unit 24 attached to the surface of the area to be visualized 300, near-infrared light L1 transmitted through the area to be visualized 300 can be converted into visible light L2 by the wavelength conversion unit 24. As a result, a visible vascular image 400 can be displayed on the wavelength conversion unit 24. In other words, the vascular visualization member 10A can display a vascular image 400 on the wavelength conversion unit 24 located on the area to be visualized 300 without using a member that converts near-infrared light L1 into an image. Therefore, blood vessels 302 can be visualized with a small and simple configuration.

[0053] Furthermore, since the blood vessel visualization member 10A is attached to the second surface 306 of the area to be visualized 300, the near-infrared light L1 that has passed through the area to be visualized 300 can be efficiently received by the wavelength conversion unit 24. Therefore, the blood vessel image 400 can be displayed more clearly on the wavelength conversion unit 24.

[0054] The wavelength conversion section 24 is formed in a sheet shape, and the adhesive section 26 is provided on the surface of the wavelength conversion section 24 facing the thickness direction.

[0055] With this configuration, it is possible to suppress the formation of a space between the surface of the wavelength conversion unit 24 facing the thickness direction and the second surface 306 of the visualization target area 300.

[0056] The sheet body 22 is flexible.

[0057] With this configuration, the sheet body 22 can be deformed to match the shape of the second surface 306 of the area to be visualized 300.

[0058] The sheet body 22 is provided with one or more notches 32 connected to the outer circumference of the sheet body 22.

[0059] With this configuration, it is possible to suppress the formation of wrinkles on the outer periphery of the sheet body 22 when the sheet body 22 is attached to the area 300 to be visualized.

[0060] The sheet body 22 is configured to allow liquid or gas to permeate it in the thickness direction of the sheet body 22.

[0061] With this configuration, the sheet body 22 can prevent the second surface 306 of the area to be visualized 300 from becoming damp.

[0062] The blood vessel visualization device 13A includes an irradiation unit 20 which includes a light source unit 36 ​​for irradiating the second surface 306 of the area to be visualized with near-infrared light L1.

[0063] With this configuration, the blood vessel visualization device 13A can display the blood vessel image 400 on the wavelength conversion unit 24.

[0064] The irradiation unit 20 has an irradiation support unit 38 that supports the light source unit 36 ​​in a displaceable manner.

[0065] With this configuration, it becomes easier to bring the light source unit 36 ​​into close contact with the first surface 304 of the part to be visualized 300.

[0066] The blood vessel visualization system 12 includes a camera 14 that captures the blood vessel image 400 displayed on the blood vessel visualization member 10A, and an image processing unit 60 that analyzes and processes the image captured by the camera 14.

[0067] With this configuration, the blood vessel visualization system 12 can capture changes in the blood vessel image 400 of the wavelength conversion unit 24.

[0068] Next, the vascular puncture system 100 according to the present invention will be described. As shown in Figure 4, the vascular puncture system 100 includes a vascular visualization device 13B and a medical device 200.

[0069] The vascular visualization device 13B comprises a vascular visualization member 10B and the irradiation unit 20 (see Figure 1) described above. The sheet body 22a of the vascular visualization member 10B further has puncture holes 70 and fragile portions 72 compared to the sheet body 22 of the vascular visualization member 10A described above.

[0070] The puncture hole 70 is a hole for puncturing the blood vessel 302 with the medical device 200. The puncture hole 70 is located such that, for example, with the blood vessel visualization member 10B attached to the area to be visualized 300, it includes the area where the blood vessel 302 to be punctured (for example, the radial artery) is assumed to be located. Specifically, the puncture hole 70 is located, for example, in the central part of the sheet body 22a. In this embodiment, the puncture hole 70 is a circular hole. The diameter of the puncture hole 70 is set to, for example, 1 mm or more and 10 mm or less. However, the shape, position and size of the puncture hole 70 can be set as appropriate.

[0071] The weak portion 72 extends from the outer circumference of the sheet body 22a to the puncture hole 70. The weak portion 72 has a shape that makes it more prone to breakage than the other parts of the sheet body 22a. The weak portion 72 is, for example, a perforation. However, the weak portion 72 may be a groove that does not penetrate the sheet body 22a in the thickness direction. In this case, the weak portion 72 is thinner than the other parts of the sheet body 22a, making it more prone to breakage (more prone to tearing).

[0072] The vulnerable portion 72 has a first vulnerable line 74 and a second vulnerable line 76. The first vulnerable line 74 extends linearly from the center of the first edge 78 of the sheet body 22a to the puncture hole 70. The first edge 78 does not have a notch 32. However, the first edge 78 may have a notch 32 at a position that avoids the first vulnerable line 74.

[0073] The second weak line 76 extends linearly from the center of the second edge 80 of the sheet body 22a to the puncture hole 70. The puncture hole 70 is located between the first edge 78 and the second edge 80 of the sheet body 22a. The second weak line 76 is located on the extension of the first weak line 74. The second edge 80 does not have a notch 32. However, the second edge 80 may have a notch 32 at a position that avoids the second weak line 76.

[0074] The medical device 200 is, for example, a catheter assembly 201. The catheter assembly 201 has a needle body 202, a needle hub 204, a catheter shaft 206, and a catheter hub 208. The needle body 202 is configured to puncture a blood vessel 302. The needle hub 204 is provided at the proximal end of the needle body 202. The catheter shaft 206 extends in a tubular shape. In the initial state, the needle body 202 is inserted through the lumen of the catheter shaft 206. The catheter hub 208 is provided at the proximal end of the catheter shaft 206. The medical device 200 is not limited to the catheter assembly 201, and may be a puncture needle for blood collection, etc.

[0075] In this case, the sheet body 22a can prevent the medical device 200 (e.g., catheter hub 208) from directly contacting the second surface 306 of the visualization target site 300 when the medical device 200 is inserted into the blood vessel 302 or when the medical device 200 is placed in the visualization target site 300.

[0076] The sheet body 22a may have a plurality of puncture holes 70. In this case, the number and position of the puncture holes 70 can be set as appropriate.

[0077] The vascular puncture system 100 provides the following effects:

[0078] According to the vascular puncture system 100, the medical device 200 (catheter assembly 201) can be inserted into the blood vessel 302 while visualizing the vascular image 400 displayed on the wavelength conversion unit 24, thus enabling smooth puncture of the blood vessel 302 by the medical device 200.

[0079] The wavelength conversion unit 24 has a puncture hole 70 for inserting the medical device 200 into a blood vessel 302.

[0080] With this configuration, the medical device 200 can be inserted into the blood vessel 302 through the puncture hole 70. This reduces the puncture resistance compared to the case where the medical device 200 is inserted through the sheet body 22a. It also reduces the possibility of the sheet body 22a becoming mixed into the visualization target area 300 as a foreign object.

[0081] The sheet body 22a has a fragile portion 72 that extends from the outer circumference of the sheet body 22a to the puncture hole 70.

[0082] With this configuration, after vascular puncture by the medical device 200, the fragile portion 72 can be ruptured and the sheet body 22a can be easily removed from the visualization target area 300.

[0083] The vascular puncture system 100 may also include a vascular visualization member 10A instead of the vascular visualization member 10B. Furthermore, the vascular puncture system 100 may also include the camera 14 and information processing device 16 described above.

[0084] As shown in Figure 5A, the sheet bodies 22 and 22a of the blood vessel visualization members 10A and 10B may have an adhesive portion 26a instead of the adhesive portion 26. The adhesive portion 26a is provided on the side surface of the wavelength conversion portion 24. The adhesive portion 26a encircles the wavelength conversion portion 24. Furthermore, the adhesive portion 26a can be made of a material that does not transmit near-infrared light L1. Note that the sheet bodies 22 and 22a may have an adhesive portion 26a in addition to the adhesive portion 26.

[0085] As shown in Figure 5B, the sheet bodies 22 and 22a of the blood vessel visualization members 10A and 10B may have a wavelength conversion unit 24a instead of the wavelength conversion unit 24. The wavelength conversion unit 24a has a support layer 82 and a conversion unit body 84. The support layer 82 is formed into a sheet from a material that does not contain the wavelength conversion material 28. The support layer 82 is flexible. The support layer 82 is made of a resin material that can transmit visible light L2.

[0086] The converter body 84 is laminated on the support layer 82. The converter body 84 is made of a material including the wavelength conversion material 28. The converter body 84 is formed by coating the surface of the support layer 82. The adhesive portion 26 is provided on the converter body 84. In other words, the converter body 84 is located between the support layer 82 and the adhesive portion 26. The sheet bodies 22 and 22a may have the aforementioned adhesive portion 26a provided on the side surface of the wavelength conversion section 24a instead of the adhesive portion 26, or they may have the adhesive portion 26a provided on the side surface of the wavelength conversion section 24a in addition to the adhesive portion 26.

[0087] The wavelength conversion unit 24a may be configured by swapping the positions of the support layer 82 and the conversion unit body 84 shown in Figure 5B. In other words, the support layer 82 may be positioned between the conversion unit body 84 and the adhesive portion 26.

[0088] As shown in Figure 5C, the sheet bodies 22 and 22a of the blood vessel visualization members 10A and 10B may have a wavelength conversion unit 24b instead of a wavelength conversion unit 24. The wavelength conversion unit 24b has a support layer 82, a conversion unit body 84, and a reinforcing layer 86. The reinforcing layer 86 is configured in the same way as the support layer 82. The reinforcing layer 86 is laminated on the side of the conversion unit body 84 opposite to the support layer 82. In other words, the conversion unit body 84 is located between the support layer 82 and the reinforcing layer 86. When a sheet body 22a with such a configuration is used in the blood vessel puncture system 100, the reinforcing layer 86 can function as a cushion when the medical device 200 hits the sheet body 22a. The wavelength conversion unit 24b may be configured by swapping the positions of the support layer 82 and the reinforcing layer 86. In other words, the support layer 82 may be located between the conversion unit body 84 and the adhesive part 26.

[0089] Furthermore, the present invention is not limited to the embodiments described above, and various configurations can be taken without departing from the spirit of the invention. [Explanation of Symbols]

[0090] 10A, 10B...Vascular visualization components 12...Vascular visualization system 13A, 13B... Blood vessel visualization device; 22, 22a... Sheet body 24, 24a, 24b...Wavelength conversion part 26, 26a...Adhesive part 28...Wavelength conversion material 32...Cut section 70...Puncture hole 72...Weak area 82...Support layer 84...Converter unit body 300...Object to be visualized 302...Blood vessels 304...First surface 306...Second surface L1...Near-infrared light L2...Visible light

Claims

1. A blood vessel visualization component for visualizing blood vessels in a living organism, It comprises a sheet that can be attached to the surface of the area to be visualized, The aforementioned sheet body is A wavelength conversion unit containing a wavelength conversion material that converts near-infrared light into visible light, A blood vessel visualization member comprising an adhesive portion provided in the wavelength conversion portion.

2. A blood vessel visualization member according to claim 1, The wavelength conversion section is formed in a sheet shape, The adhesive portion is provided on the surface or side of the wavelength conversion portion facing the thickness direction, and is a blood vessel visualization member.

3. A blood vessel visualization member according to claim 1, The aforementioned sheet is a flexible blood vessel visualization member.

4. A blood vessel visualization member according to claim 1, The aforementioned sheet body is provided with one or more notches connected to the outer circumference of the sheet body, thereby providing a blood vessel visualization member.

5. A blood vessel visualization member according to claim 1, The aforementioned sheet body is configured to allow liquid or gas to permeate in the thickness direction of the sheet body, and is a blood vessel visualization member.

6. A blood vessel visualization member according to claim 1, The sheet body is a blood vessel visualization member having a puncture hole for inserting a medical device into the blood vessel.

7. A blood vessel visualization member according to claim 6, The sheet body is a blood vessel visualization member having a fragile portion extending from the outer circumference of the sheet body to the puncture hole.

8. A blood vessel visualization member according to claim 1, The wavelength conversion unit is A support layer formed in sheet form from a material that does not contain the aforementioned wavelength conversion material, A blood vessel visualization member comprising a conversion section body laminated on the support layer and composed of a material including the wavelength conversion material.

9. A blood vessel visualization member according to claim 8, The main body of the conversion unit is a blood vessel visualization member formed by coating the surface of the support layer.

10. A blood vessel visualization member according to claim 1, The wavelength conversion section is a blood vessel visualization member having a portion formed into a sheet shape from a material including the wavelength conversion material.

11. A blood vessel visualization member according to claim 1, The wavelength conversion material is a blood vessel visualization member that converts near-infrared light with a wavelength greater than 700 nm and less than or equal to 2500 nm into visible light with a wavelength of 400 nm or more and less than or equal to 700 nm.

12. A blood vessel visualization member according to any one of claims 1 to 11, A blood vessel visualization device comprising: an irradiation unit including a light source unit for irradiating the surface of the area to be visualized, in the direction opposite to the surface to which the blood vessel visualization member is attached, with near-infrared light.

13. A blood vessel visualization device according to claim 12, The vascular visualization device comprises an irradiation support unit that supports the light source unit in a displaceable manner.

14. The blood vessel visualization device according to claim 12, A vascular puncture system comprising a medical device for puncturing the aforementioned blood vessel.

15. The blood vessel visualization device according to claim 12, A camera for capturing the vascular image displayed on the aforementioned vascular visualization member, A blood vessel visualization system comprising: an image processing unit that analyzes and processes images captured by the aforementioned camera.

Images