Medical lighting device and assembling method of medical lighting device

Abstract

To provide a medical lighting device that can be manufactured at low cost, can be easily operated, and can ensure a sufficient amount of light for an object of irradiation light, and an assembling method of the medical lighting device.SOLUTION: A medical lighting device for illuminating the inside of a living body comprises: a cylindrical insertion tube to be inserted into the living body; and a light-emitting member being installed inside the insertion tube and including an FPC part that can be inserted into the insertion tube, a light-emitting device mounted on a tip side of the FPC part, and a reinforcing plate to be fixed to overlap the FPC part. The light-emitting device is disposed inside the insertion tube so as to face the outside from an irradiation opening, the opening at the tip of the insertion tube, or the opening provided on a side face at the tip side of the insertion tube, the irradiation opening is sealed with a resin containing a yellow phosphor, and the light emitting member is fixed to the insertion tube by the resin containing the yellow phosphor.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a medical lighting device and a method for assembling the medical lighting device.

Background Art

[0002] Conventionally, in the medical field, in order to arrange a plurality of LEDs (Light Emitting Diodes) within a limited space on a mounting base and achieve both miniaturization of the LED lighting means and ensuring a sufficient light amount, an endoscope device having a configuration in which the front surfaces of a plurality of LED bare chips are covered with a common phosphor layer is known. However, the endoscope device includes, as separate members, an insertion portion in which a lens adapter is connected to the distal end side of a long flexible tube, and a box-shaped device main body portion to which the proximal end of the insertion portion is connected, and there is a risk that the operability of the endoscope device may be reduced. Further, the endoscope device has a configuration in which LED lighting means are arranged in parallel on the side surface of the lens adapter and a transparent sealing agent is arranged so as to cover the front surface thereof, but the device configuration is not simple and it cannot be said that the manufacturing is easy (see, for example, Patent Document 1).

[0003] Also, a light source device including a plurality of light sources having different wavelengths and an optical fiber for transmitting light incident from the plurality of light sources simultaneously or from any one of the plurality of light sources is known. The light source device enables selective irradiation of light. However, generally, a light source device for an optical fiber is expensive and the efficiency of the light source may be low. Further, when the optical fiber is long, there is a risk that the operability of the light source device may be reduced, similar to the endoscope device described in Patent Document 1 above (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The technology disclosed herein is made to solve the above problems, and its object is to provide a medical lighting device that has higher operability and can be manufactured at a lower cost.

Means for Solving the Problems

[0006] The present disclosure for solving the above problems is a medical lighting device that irradiates the inside of a living body, a cylindrical insertion tube portion to be inserted into the living body, a strip-shaped FPC portion that can be inserted inside the insertion tube portion, a light-emitting element mounted on the tip side of the FPC portion, and a reinforcing plate fixed so as to overlap the FPC portion to reinforce the FPC portion, and a light-emitting member installed inside the insertion tube portion, comprising, the light-emitting element is arranged inside the insertion tube portion so as to face the outside through an irradiation opening that is an opening at the tip of the insertion tube portion or an opening provided on the side surface on the tip side of the insertion tube portion, the irradiation opening is sealed with a resin containing a yellow phosphor, the light-emitting member is fixed to the insertion tube portion with the resin containing the yellow phosphor, and includes a medical lighting device.

[0007] The medical lighting device in the present disclosure is used, for example, during an ophthalmic surgery on a patient's vitreous body. At that time, a cylindrical insertion tube portion is inserted into the patient's eyeball through a port which is an accessory, and the irradiation light of a light-emitting element is irradiated onto the vitreous body located deep inside the eyeball using the medical lighting device so that the surgeon can visually recognize the surgical site. Since the medical lighting device in the present disclosure directly includes a light-emitting element as a light source inside the insertion tube portion to be inserted into the patient's eyeball, there is no need to prepare a light source device provided separately from the insertion tube portion, an optical fiber for guiding light from the light source device to the insertion tube portion, or the like. As described above, generally, a light source device for an optical fiber is expensive and the efficiency of the light source may be low. In addition, if the optical fiber is long, the operability of the medical lighting device may decrease. Therefore, according to the present disclosure, it is possible to realize a medical lighting device with higher operability and manufacturable at a lower cost.

[0008] Further, the light-emitting element is arranged so as to face the outside from the irradiation opening of the insertion tube portion, and the irradiation opening is sealed with a resin containing a yellow phosphor. According to this, it is possible to suppress, for example, moisture and foreign matter from entering the insertion tube portion from the outside of the irradiation opening, and it is possible to protect the inside of the insertion tube portion. In addition, since the resin for sealing the irradiation opening contains a yellow phosphor, it is possible to make the irradiation light irradiated from the light-emitting element through the resin into white light, and it is possible to enhance the visibility of the surgical site inside the eyeball.

[0009] Furthermore, in the present disclosure, the light-emitting member is fixed to the insertion tube portion with a resin containing a yellow phosphor. That is, a light-emitting member having an FPC portion, a light-emitting element mounted on the tip side of the FPC portion, and a reinforcing plate for reinforcing the FPC portion is fixed to the insertion tube portion with a resin containing a yellow phosphor in the vicinity of the irradiation opening of the insertion tube portion. With such a simple configuration, it is possible to fix the light-emitting member to the insertion tube portion. Thereby, the medical lighting device can be completed with a simpler configuration and an easier method, and also in this sense, it is possible to reduce the cost of the medical lighting device.

[0010] In addition, in the present disclosure, the light-emitting elements may be mounted so as to be arranged in a plurality in the longitudinal direction of the FPC portion, and the irradiation openings may be provided on the side surface of the insertion cylinder portion in the same number as the light-emitting elements. According to this, compared with the case where one light-emitting element is mounted on the FPC portion, it is possible to disperse the heat generated by the light-emitting elements to obtain the same amount of light, and it is possible to suppress the temperature rise in the vicinity of the irradiation openings of the insertion cylinder portion.

[0011] In addition, in the present disclosure, the light-emitting elements may be mounted so as to be arranged in a plurality in the longitudinal direction of the FPC portion, and the irradiation openings may be provided on the side surface of the insertion cylinder portion so as to include the light-emitting elements mounted in the plurality. In this case, the opening area of the irradiation openings becomes relatively wide. Thereby, it is possible to suppress the irradiation light from the plurality of light-emitting elements from being internally reflected on the inner surface of the insertion cylinder portion, and it is possible to improve the irradiation efficiency. Further, relatively, the amount of the resin containing the yellow phosphor for sealing the irradiation openings can be increased, and it is possible to more reliably fix the light-emitting member inside the insertion cylinder portion.

[0012] In addition, in the present disclosure, the light-emitting elements may be mounted so as to be arranged in a plurality in the longitudinal direction of the FPC portion, and the interval between the light-emitting elements may be 0.5 mm or more and 1.5 mm or less. According to this, it is possible to more reliably disperse the heat generated in each light-emitting element, and it is possible to more reliably suppress the temperature rise in the vicinity of the irradiation openings in the insertion cylinder portion.

[0013] In addition, in the present disclosure, the irradiation openings are provided on the side surface on the tip side of the insertion cylinder portion, and when the surface of the FPC portion opposite to the mounting surface of the light-emitting elements abuts against the inner wall of the insertion cylinder portion, the light-emitting surface of the light-emitting elements may be arranged at a position separated from the center of the insertion cylinder portion by 1 / 2 or more of the inner diameter of the insertion cylinder portion toward the irradiation opening side. According to this it is possible to arrange the light-emitting surface of the light-emitting elements at a portion closer to the irradiation openings, and it is possible to more reliably improve the irradiation efficiency of the light-emitting elements.

[0014] In addition, in the present disclosure, the irradiation opening is an opening at the tip of the insertion cylinder portion, and the FPC portion may be inclined with respect to the axial direction of the insertion cylinder portion on the tip side so that the light emitting element can irradiate light from the irradiation opening. According to this, even when the irradiation opening is provided at the tip of the insertion cylinder portion, it is possible to more reliably arrange the light emitting element so as to face the outside from the irradiation opening, and it is possible to improve the irradiation efficiency of the medical lighting device.

[0015] Further, in the present disclosure, it may further include a power source that supplies power to the FPC portion and an operation portion that receives an operation related to the irradiation of light from the light emitting element, and a grip portion that is coupled to the insertion cylinder portion and can be gripped by an operator. That is, in the medical lighting device in the present disclosure, since the light emitting element, the power source, and the operation portion are integrally configured, as described above, it is possible to manufacture the medical lighting device at low cost and improve the operability.

[0016] Also, in the present disclosure, the distal end of the grip portion and the proximal end of the insertion cylinder portion may be coupled so as not to be relatively movable. According to this, it is possible to suppress the relative movement between the insertion cylinder portion and the grip portion and to firmly fix them. As a result, it is possible to more reliably improve the operability of the medical lighting device.

[0017] Also, in the present disclosure, the distal end of the grip portion and the proximal end of the insertion cylinder portion may be coupled via a flexible and insulated electric wire. According to this, when using the medical lighting device, it is not necessary to grip the grip portion, and since the electric wire has flexibility, it is possible to obtain excellent operability.

[0018] In addition, the present disclosure includes an insertion step of inserting a light emitting member having a strip-shaped FPC portion, a light emitting element mounted on the tip side of the FPC portion, and a reinforcing plate fixed so as to overlap the FPC portion to reinforce the PFC portion into a cylindrical insertion cylinder portion, A position adjustment step of adjusting the position of the light emitting member so that the light emitting element faces the outside through an irradiation opening, which is an opening provided at the tip of the insertion cylinder portion or a side surface on the tip side of the insertion cylinder portion; A sealing step of filling a space between the light emitting member and the irradiation opening with a resin containing a yellow phosphor from the irradiation opening; and The method for assembling a medical lighting device may include the light emitting member being fixed to the insertion cylinder portion by the resin containing the yellow phosphor.

[0019] By going through the above steps, it is possible to complete a medical lighting device that exhibits the above-described effects inexpensively and easily. Note that the steps in the method for assembling a medical lighting device according to the present disclosure may be performed manually or automatically by a dedicated manufacturing apparatus.

[0020] Note that the means for solving the above problems can be used in combination with each other as much as possible.

Effects of the Invention

[0021] According to the technology of the present disclosure, it is possible to provide a medical lighting device having higher operability and lower cost.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0023] 〔Example 1〕 Hereinafter, examples of the present disclosure will be described in detail with reference to the drawings. Note that the examples shown below are one aspect of the present disclosure and do not limit the technical scope of the present invention.

[0024] <Configuration> Figure 1A is a schematic side view of a part of the medical lighting device 1 according to Example 1 that is inserted into a living body. Specifically, as the use of the medical lighting device 1, during an ophthalmic surgery of the vitreous body in a patient's eyeball 2 (see Figure 2 described later), the cylindrical insertion cylinder portion 11 provided on the tip side of the medical lighting device 1 is inserted into the patient's eyeball 2 through a port 3 (see Figure 2 described later) which is an auxiliary tool, and light is irradiated onto the vitreous body in the eyeball 2 so that the surgeon can visually recognize it. The material of the insertion cylinder portion 11 is a type of stainless steel that is resistant to rust and corrosion, and SUS304 which is rich in workability is used. Further, a light-emitting member 12 is installed inside the insertion cylinder portion 11, and the light-emitting member 12 is generally composed of an FPC (Flexible printed circuits) portion 121, an LED bare chip 122, and a reinforcing plate 123.

[0025] The FPC part 121 has a strip shape and is inserted inside the insertion cylinder part 11. Since the FPC part 121 has flexibility, it can also be bent inside the insertion cylinder part 11 according to the shape of the insertion cylinder part 11 that contains the FPC part 121 inside. The LED bare chip 122 has a substantially rectangular shape in plan view and is mounted on the FPC part 121. By irradiating the irradiation light of a predetermined wavelength from the LED bare chip 122, an operator can clearly visually recognize an object, that is, the vitreous body in the patient's eyeball 2 in this embodiment. Here, the LED bare chip 122 corresponds to the light-emitting element in the present disclosure. The reinforcing plate 123 is made of a polyamide-based material and is fixed so as to overlap the FPC part 121 from the outside of the FPC part 121, reinforcing the FPC part 121.

[0026] In addition, an irradiation opening 13 is provided on the side surface of the tip side of the insertion cylinder part 11, and a part of the LED bare chip 122 is arranged so as to overlap the irradiation opening 13 in the side view in FIG. 1A. The irradiation light from the LED bare chip 122 is irradiated to the outside of the insertion cylinder part 11 through this irradiation opening 13. In addition, the tip of the insertion cylinder part 11 is blocked by a cap 14, whereby the inside of the insertion cylinder part 11 is protected from external foreign matters and the like.

[0027] Here, the position where the irradiation opening 13 is provided is not limited to the side surface of the tip side of the insertion cylinder part 11, and may be, for example, the tip of the insertion cylinder part 11. In this case, the FPC part 121 may have an inclination at a certain angle with respect to the axial direction of the insertion cylinder part 11 on the tip side of the insertion cylinder part 11 so that the LED bare chip 122 can irradiate the irradiation light from the irradiation opening 13. Thereby, even when the position of the irradiation opening 13 opens in the axial direction at the tip of the insertion cylinder part 11, it is possible to more reliably irradiate the irradiation light from the irradiation opening 13 to the outside of the insertion cylinder part 11.

[0028] Figure 1B is a cross-sectional view taken in the direction of X of the dashed-dotted line A-A shown in Figure 1A. From Figure 1B, it is clear that the LED bare chip 122 is mounted on the FPC part 121, and the FPC part 121 is reinforced by the reinforcing plate 123. Also, the irradiation opening 13 is sealed with a resin 15 containing a yellow phosphor so as to cover the light-emitting surface of the LED bare chip 122. Thereby, it is possible to prevent the intrusion of moisture and foreign matter from the irradiation opening 13 and protect the inside of the insertion cylinder part 11. Also, it is possible to make the irradiation light irradiated from the LED bare chip 122 through the resin 15 into white light. Also, by sealing the irradiation opening 13 with the resin 15, it becomes possible to fix the LED bare chip 122 inside the insertion cylinder part 11. In addition to fixing the LED bare chip 122 with the resin 15 containing a yellow phosphor, it is not always necessary to fix the FPC part 121 to the insertion cylinder part 11 by other locations or other methods. By fixing the LED bare chip 122 with the resin 15 containing a yellow phosphor, it is possible to fix the FPC part 121, the LED bare chip 122, and the reinforcing plate 123 to the insertion cylinder part 11 by a simpler configuration or method.

[0029] Also, the length L1 from the tip of the insertion cylinder part 11 to the center of the light-emitting surface of the LED bare chip 122 is about 1 / 2 of the length L2 from the tip of the insertion cylinder part 11 to the tip of the reinforcing plate 123. Specifically, L1 is 0.6 mm and L2 is 1.2 mm. With this dimension, the bent portion of the FPC part 121 (that is, the portion of the FPC part 121 not reinforced by the reinforcing plate 123) can be made an appropriate length, and an appropriate movable range of the LED bare chip 122 can be secured.

[0030] Figure 1C is a cross-sectional view of the two-dot chain line B-B shown in Figure 1A as viewed from the Y direction. From Figure 1C, it is clear that the cross-sectional shape of the insertion cylinder portion 11 in this embodiment is circular. Further, the FPC portion 121 is inserted so as to be able to contact the inner wall of the insertion cylinder portion 11 at both ends in its width direction. As a result, even in the state before fixing, inside the insertion cylinder portion 11, the position of the LED bare chip 122 mounted on the FPC portion 121 can be regulated so that the LED bare chip 122 does not move too far away from the irradiation opening 13. Note that the cross-sectional shape of the insertion cylinder portion 11 does not necessarily have to be circular. It may have a cross-sectional shape such as a polygon or an ellipse.

[0031] Also, as an example of the dimensions, the width W1 of the FPC portion 121 is 0.35 mm, the height H1 is 0.09 mm, the width W2 of the LED bare chip 122 is 0.17 mm, and the height H2 is 0.15 mm. Further, the outer diameter D1 of the cross-section of the insertion cylinder portion 11 is 0.5 mm, and the inner diameter D2 is 0.4 mm. From the above dimensions, in Figure 1C, the distance from the light-emitting surface of the LED bare chip 122 to the inner wall on the irradiation opening 13 side of the insertion cylinder portion 11 is obtained as about 0.06 mm.

[0032] That is, when the surface of the FPC portion 121 opposite to the surface on which the LED bare chip 122 is mounted contacts the inner circle of the cross-section of the insertion cylinder portion 11, the light-emitting surface of the LED bare chip 122 is arranged at a position closer to the irradiation opening 13 by more than half of 0.2 mm, which is the radius of the inner diameter D2 of the cross-section of the insertion cylinder portion 11, from the center O of the cross-section of the insertion cylinder portion 11. As a result, the LED bare chip 122 is automatically arranged at a position closer to the irradiation opening 13 side, and a configuration that can irradiate an object more easily can be achieved.

[0033] FIG. 2 is a schematic diagram showing an example of use of the medical lighting device 1 according to Example 1. As described above, as an example of use of the medical lighting device 1, the insertion cylinder portion 11 is inserted into the patient's eyeball 2 through the port 3, and the LED bare chip 122 irradiates the vitreous body in the eyeball 2 through the resin 15 containing the yellow phosphor so that the operator can visually recognize the surgical site. The port 3 is a substantially cylindrical member for facilitating the insertion of the insertion cylinder portion 11 into the eyeball 2 by inserting it into the hole made in the eyeball 2 for the operation. The medical lighting device 1 includes, in addition to the above-described insertion cylinder portion 11, a grip portion 16 which is a portion to be gripped when the operator uses it, a power source (not shown) such as a lithium ion battery mounted inside the grip portion 16, a switch 17 as an operation portion for receiving operations related to the irradiation of the irradiation light from the LED bare chip 122 such as adjusting the intensity of the power supplied from the power source to the LED bare chip 122, and a fixing portion 18 for controlling the length of the insertion cylinder portion 11 inserted into the eyeball 2 by fitting it into the port 3, etc.

[0034] The power source is electrically connected to the FPC portion 121 by wire wiring or the like inside the grip portion 16, and the power supplied from the power source reaches the LED bare chip 122 through the FPC portion 121, whereby the LED bare chip 122 irradiates the irradiation light. That is, when using the medical lighting device 1 according to this embodiment, for example, it is not necessary to connect the medical lighting device 1 to the light source device through a transmission means such as an optical fiber. In other words, since it can be used alone as the medical lighting device 1, it has high operability and can be manufactured at a low cost because no light transmission means is required. Further, in this embodiment, the insertion cylinder portion 11 is integrally coupled to the grip portion 16, and this coupled portion is fixed so as not to be relatively movable. Thereby, high operability is ensured.

[0035] <Flowchart> FIG. 3 is a flowchart and a schematic diagram showing the steps in the assembling method of the medical lighting device 1 according to the first embodiment. Note that, for the schematic diagram, a cross-sectional view as shown in FIG. 1B is used. Further, the steps from step S1 to step S3 below may be executed manually or automatically by a dedicated manufacturing apparatus.

[0036] As the first step of this flow, in step S1, the light emitting member 12 is inserted into the insertion cylinder portion 11 provided with the irradiation opening 13. Here, step S1 corresponds to the insertion step in the present disclosure. Next, in step S2, the position of the light emitting member 12 is adjusted so that the LED bare chip 122 faces (overlaps) the irradiation opening 13 and the irradiation light of the LED bare chip 122 is irradiated to the outside of the insertion cylinder portion 11. Here, step S2 corresponds to the position adjustment step in the present disclosure. Next, in step S3, the resin 15 containing the yellow phosphor is filled into the irradiation opening 13 so as to cover the light emitting surface of the LED bare chip 122. Here, step S3 corresponds to the sealing step in the present disclosure. Further, in step S3, by filling and solidifying the resin 15 in the irradiation opening 13, the light emitting member 12 can be fixed to the insertion cylinder portion 11. Note that the method of solidifying the resin 15 filled in the space between the irradiation opening 13 and the LED bare chip 122 depends on the type of the resin 15, but in the case of an ultraviolet curable resin, it can be solidified by a method such as irradiating ultraviolet rays. Also, a method of solidifying by leaving it in the air or heating it may be used. By going through the steps from step S1 to step S3 above, it is possible to complete the medical lighting device 1 at low cost and easily.

[0037] 〔Modification Example 1〕 Next, with reference to FIGS. 4A and 4B, the medical lighting device 1a according to Modification Example 1 of the present disclosure will be described. Since the medical lighting device 1a has many configurations in common with the medical lighting device 1 shown in FIGS. 1A and 1B of the first embodiment, the same reference numerals are given to the same configurations, and the description thereof will be omitted. Note that, similar to FIGS. 1A and 1B, FIG. 4A is a side view of the insertion cylinder portion 11a It is a schematic diagram showing this. FIG. 4B is a cross-sectional view of the dash-dotted line A'-A' shown in FIG. 4A as viewed from the direction of X'.

[0038] As a difference from the medical lighting device 1 shown in FIGS. 1A and 1B of Example 1, in the medical lighting device 1a shown in FIGS. 4A and 4B of Modification 1, three LED bare chips 122 are mounted on the FPC part 121 along the longitudinal direction of the FPC part 121. Along with this, three irradiation openings 13 are provided on the side surface of the insertion cylinder part 11a so as to overlap the light emitting surfaces of the respective LED bare chips 122. Compared with the case of using one LED bare chip 122, when using three LED bare chips 122, the power supplied from the power source is dispersed among the three LED bare chips 122 in order to obtain the same amount of light, so that heat generation in each LED bare chip 122 can be suppressed. Further, since heat generation does not concentrate, it is possible to suppress a temperature rise in the vicinity of the tip of the insertion cylinder part 11a. Also, it is possible to secure a wider irradiation range of the LED bare chip 122. Note that the three LED bare chips 122, the irradiation openings 13, and the resin 15 that seals the irradiation openings 13 may all be equivalent in terms of size, material, etc. In FIGS. 4A and 4B, the same reference numerals are given to each. Also, these numbers are not limited to three as long as there are a plurality.

[0039] Also, in this modification, the length L3 from the tip of the insertion cylinder part 11a to the center of the light emitting surface of the LED bare chip 122 located on the most tip side may be, for example, about 0.6 mm, and the length L4 from the tip of the insertion cylinder part 11a to the tip of the reinforcing plate 123 may be about 3.6 mm. Also, the interval L5 between the centers of the light emitting surfaces of the respective LED bare chips 122 may be about 1 mm. Note that the interval between the respective LED bare chips 122 is desirably 0.5 mm or more and 1.5 mm or less. Thereby, it is possible to sufficiently disperse heat generation in each LED bare chip 122.

[0040] 〔Modification 2〕 Next, with reference to FIGS. 5A and 5B, the medical lighting device 1b according to Modification 2 of the present disclosure will be described. Similar to FIGS. 4A and 4B, FIG. 5A is a schematic view showing a side view of the insertion cylinder portion 11b. FIG. 5B is a cross-sectional view taken in the direction of X'' looking at the dashed line A''-A'' shown in FIG. 5A.

[0041] Similar to the medical lighting device 1a shown in FIGS. 4A and 4B of Modification 1, in the medical lighting device 1b shown in FIGS. 5A and 5B of Modification 2, three LED bare chips 122 are adhesively fixed to the FPC portion 121 along the longitudinal direction of the FPC portion 121. As a difference, one irradiation opening 13 is provided on the side surface of the insertion cylinder portion 11b so as to entirely encompass the three LED bare chips 122. Thereby, internal reflection of the irradiation light irradiated obliquely from each LED bare chip 122 by the inner wall of the insertion cylinder portion 11b can be reduced, and the irradiation efficiency can be improved. Further, the plurality of LED bare chips 122 can be sealed and fixed with a relatively large amount of resin 15, and the plurality of LED bare chips 122 can be more reliably fixed inside the insertion cylinder portion 11. In FIGS. 5A and 5B as well, the same reference numerals are given to each of the three LED bare chips 122, and the number of LED bare chips 122 is not limited to three as long as it is plural.

[0042] 〔Modification 3〕 Next, with reference to FIGS. 6A and 6B, the medical lighting devices 1c and 1d according to Modification 3 of the present disclosure will be described. FIGS. 6A and 6B show usage examples of the medical lighting devices 1c and 1d, similar to FIG. 2 of Example 1. Hereinafter, with reference to FIGS. 6A and 6B, the differences from the configuration of the entire medical lighting device 1 shown in FIG. 2 will be described.

[0043] In the medical lighting device 1c shown in FIG. 6A, compared with the medical lighting device 1 shown in FIG. 2 The length of the grip portion 16b in the longitudinal direction is short and it is lightweight. Since the grip portion 16b is relatively small, after inserting the insertion cylinder portion 11 into the port 3, it is possible to maintain the state where the insertion cylinder portion 11 is inserted into the eyeball 2 and irradiates the inside without gripping the grip portion 16b. Further, in the medical lighting device 1d shown in FIG. 6B, the insertion cylinder portion 11 and the grip portion 16b are coupled via an electric wire 19 having flexibility and an insulating coating. Thereby, when using the medical lighting device 1d, it is possible to use it with the grip portion 16b placed, for example, beside the patient's face. Further, since the electric wire 19 has flexibility, the operability is excellent.

[0044] Note that the internal configuration of the insertion cylinder portion 11 shown in FIGS. 6A and 6B is the same as that of the insertion cylinder portion 11 shown in FIGS. 1A to 1C of the first embodiment. Instead, the insertion cylinder portion 11a shown in FIGS. 4A and 4B of the first modification or the insertion cylinder portion 11b shown in FIGS. 5A and 5B of the second modification may be applied.

[0045] In the above embodiment, an example in which the medical lighting device according to the present disclosure is inserted into a patient's eyeball for illumination has been described. However, the medical lighting device according to the present disclosure may be used other than the patient's eyeball. Further, it may be used for animals other than humans.

Explanation of reference numerals

[0046] 1, 1a - 1d ····· Medical lighting device 11, 11a, 11b ·· Insertion cylinder portion 12 ··········· Light emitting member 121 ·········· FPC portion 122 ·········· LED bare chip 123 ·········· Reinforcing plate 13 ··········· Irradiation opening 14 ··········· Cap 15 ··········· Resin 16, 16a, 16b · Grip portion 17 ··········· Switch 18 ·········· Fixed part 19 ·········· Electric wire 2 ·········· Eyeball 3 ·········· Port

Claims

1. A medical lighting device for irradiating the interior of a living body, comprising: a cylindrical insertion tube portion to be inserted into the living body; a strip-shaped FPC portion that can be inserted into the insertion tube portion, a light-emitting element mounted on the tip side of the FPC portion, and a reinforcing plate fixed so as to overlap the FPC portion to reinforce the FPC portion, and a light-emitting member installed inside the insertion tube portion; wherein the light-emitting element is arranged inside the insertion tube portion so as to face the outside through an irradiation opening, which is an opening provided at the tip opening of the insertion tube portion or on the side surface on the tip side of the insertion tube portion; the irradiation opening is sealed with a resin containing a yellow phosphor; the light-emitting member is fixed to the insertion tube portion with the resin containing the yellow phosphor, characterized in that it is a medical lighting device.

2. The light-emitting elements are mounted in a plurality in the longitudinal direction of the FPC portion; The medical lighting device according to claim 1, characterized in that the same number of irradiation openings as the light-emitting elements are provided on the side surface of the insertion tube portion.

3. The light-emitting elements are mounted in a plurality in the longitudinal direction of the FPC portion; The medical lighting device according to claim 1, characterized in that the irradiation opening is provided on the side surface of the insertion tube portion so as to encompass the light-emitting elements mounted in the plurality.

4. The light-emitting elements are mounted in a plurality in the longitudinal direction of the FPC portion; The medical lighting device according to claim 1, characterized in that the distance between the light-emitting elements is 0.5 mm or more and 1.5 mm or less.

5. The irradiation opening is provided on the side surface on the tip side of the insertion tube portion; When the surface of the FPC portion opposite to the mounting surface of the light-emitting element abuts against the inner wall of the insertion tube portion, the light-emitting surface of the light-emitting element is arranged at a position separated from the center of the insertion tube portion by at least 1 / 2 of the inner diameter of the insertion tube portion toward the irradiation opening side. The medical lighting device according to claim 1.

6. The irradiation opening is the opening at the tip of the insertion tube portion; The medical lighting device according to claim 1, characterized in that the FPC portion is inclined with respect to the axial direction of the insertion tube portion on the tip side so that the light-emitting element can irradiate light from the irradiation opening.

7. A power supply for supplying power to the FPC unit, and an operation unit for receiving an operation related to irradiation of light from the light emitting element, further comprising a grip unit coupled to the insertion cylinder unit and grippable by a user. The medical lighting device according to claim 1, characterized in that.

8. The medical lighting device according to claim 7, characterized in that the distal end of the grip unit and the proximal end of the insertion cylinder unit are coupled so as not to be relatively movable.

9. The medical lighting device according to claim 7, characterized in that the distal end of the grip unit and the proximal end of the insertion cylinder unit are coupled via an electric wire having flexibility and an insulating coating.

10. A light emitting member having a strip-shaped FPC unit, a light emitting element mounted on the tip side of the FPC unit, and a reinforcing plate fixed so as to overlap the FPC unit to reinforce the FPC unit. An insertion step of inserting into a cylindrical insertion cylinder unit. A position adjustment step of adjusting the position of the light emitting member so that the light emitting element faces the outside through an irradiation opening, which is an opening provided at the tip of the insertion cylinder unit or a side surface on the tip side of the insertion cylinder unit. A sealing step of filling a space between the light emitting member and the irradiation opening with a resin containing a yellow phosphor from the irradiation opening. Having The method of assembling a medical lighting device, characterized in that the light emitting member is fixed to the insertion cylinder unit by the resin containing the yellow phosphor.

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