JP2023035920A - Medical light pointing system - Google Patents

Abstract

To provide an easy-to-use medical light pointing system.SOLUTION: A medical optical pointing system 1 includes: a light diffusion sheet 10 equipped to the front surface of a display 500; a pointing device 20 including a light source module 24 for irradiating the light diffusion sheet 10 with a point light L for pointing; a fixing tool 40 for fixing the pointing device 20 to the head of a health-care professional; a power source unit 50 for supplying power to the pointing device 20; and a foot switch 60 for switching irradiation and non-irradiation of a point light by the light source module 24 by being operated by a foot of the health-care professional.SELECTED DRAWING: Figure 1

Description

The present invention relates to an optical pointing system used in medical practice.

In the medical field, a medical worker points a specific point on a monitor of medical equipment using a laser pointer or the like. Since surgeons often operate medical instruments with both hands, it has been proposed to attach a laser pointer to the eyeglasses and wear it on the head, and move the head to operate the indicated point. (See, for example, Patent Document 1).

JP 2015-148705

However, conventional laser pointers have the problem that they are not always user-friendly in the medical field. SUMMARY OF THE INVENTION It is an object of the present invention to provide a user-friendly optical medical pointing system.

The present invention for achieving the above object comprises a light diffusion sheet to be attached to the front surface of a display of medical equipment, a pointing device including a light source module for irradiating the light diffusion sheet with point light for pointing, and the pointing device. A fixture for fixing the device to the head of a medical worker, a power supply unit that supplies power to the pointing device, and a foot of the medical worker to operate the point light irradiation/non-irradiation by the light source module. a footswitch for switching illumination; and a medical optical pointing system.

The present invention for achieving the above object provides a pointing device including a light source module that emits point light for pointing, a fixture for fixing the pointing device to the head of a medical worker, and a place other than the head. and a foot switch operated by the medical worker's foot to switch between irradiation and non-irradiation of the point light by the light source module. Distinctive medical optical pointing system.

The present invention, which achieves the above object, comprises a pointing device including a light source module that emits point light for pointing, a fixture for fixing the pointing device to the head of a medical worker, and a device that supplies power to the pointing device. and a foot switch operated by the foot of the medical worker to switch between irradiation and non-irradiation of the point light by the light source module, wherein the main color of the point light is blue or green. A medical optical pointing system characterized by:

The optical pointing system for medical use includes a light diffusion sheet attached to the front surface of the display of the medical device, and the pointing device irradiates the light diffusion sheet with point light for pointing. can be done.

In relation to the medical optical pointing system, the power supply may be arranged at a location other than the head of the medical worker.

In relation to the medical optical pointing system, it may be characterized in that the primary color of the point light is blue or green.

In relation to the optical pointing system for medical use, a connecting wire connecting the foot switch and the pointing device, and a connector provided in the middle of the connecting wire and capable of separating the connecting wire in the middle. can be characterized by

In relation to the medical optical pointing system, the length from the pointing device to the connector in the connection wiring is 50 cm or more and 200 cm or less.

In relation to the medical optical pointing system, a connecting wire connecting the foot switch and the pointing device, and an engaging portion provided in the middle of the connecting wire for fixing the connecting wire to the medical staff. .

In relation to the medical optical pointing system, the length from the pointing device to the engaging portion in the connection wiring is 10 cm or more and 150 cm or less.

In relation to the optical pointing system for medical use, it is characterized in that it comprises a weight section that is attached to the foot switch and restrains movement of the foot switch.

In relation to the medical optical pointing system, it can be characterized by comprising a bag-like cover that covers the foot switch.

In relation to the medical optical pointing system, the footswitch and the power supply may be integrated.

In relation to the above medical optical pointing system, the pointing device includes a first light source module in which the point light has a primary color of blue or green, and a second light source module in which the point light has a primary color of red. and a light source module.

In relation to the medical optical pointing system, the light diffusion sheet may have a haze value of 50% or more.

ADVANTAGE OF THE INVENTION According to this invention, the excellent effect that a medical optical pointing system with good usability can be obtained can be produced.

(A) is a diagram showing the overall configuration of a medical optical pointing system according to an embodiment of the present invention, (B) is an enlarged cross-sectional view showing a light diffusion sheet of the medical optical pointing system, (C) is a diagram showing a modification of the optical dot. (A) is an enlarged sectional view showing a pointing device of the same medical optical pointing system, (B) is a plan view of a foot switch of the same medical optical pointing system, and (C) is (B). 1 is a cross-sectional view taken along line CC in FIG. (A) is a side view showing the pointing device and fixture of the medical optical pointing system, and (B) is a cross-sectional view taken along line BB in (A). (A) to (C) are perspective views showing modes of mounting the same pointing device and fixture on an accessory member. It is a figure which shows the use condition of the same medical optical pointing system. (A) is a diagram showing a first modified example of the medical optical pointing system, and (B) is a diagram showing a second modified example. (A) is a diagram showing a third modified example of the medical optical pointing system, and (B) is a diagram showing a fourth modified example. (A) is an enlarged cross-sectional view showing a pointing device of an optical medical pointing system of a fifth modified example; (B) is a plan view of a foot switch of the optical medical pointing system; is a cross-sectional view taken along line CC in (B). (A) is a diagram showing an optical medical pointing system of a sixth modification, and (B) is an enlarged perspective view showing an engaging portion of the optical medical pointing system. FIG. 20 is an enlarged perspective view showing a foot switch of the medical optical pointing system of the sixth modified example; FIG. 20 is a diagram showing a usage state of the medical optical pointing system of the sixth modification;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1A shows the overall configuration of a medical optical pointing system 1 of this embodiment. A medical optical pointing system 1 includes a pointing device 20 that includes a light diffusion sheet 10 attached to the front of a display 500 of a medical device and a light source module 24 that irradiates the light diffusion sheet 10 with point light L for pointing. , a fixture 40 for fixing the pointing device 20 to the medical staff's head, a power supply unit 50 for supplying power to the pointing device 20, and a point light L by the light source module 24 operated by the medical staff's foot. A foot switch 60 for switching irradiation/non-irradiation is provided.

(light diffusion sheet)
FIG. 1B shows an enlarged cross section of the light diffusion sheet 10 . The light diffusion sheet 10 has a structure in which a transparent base layer 12 and a light diffusion layer 14 are laminated. The transparent base layer 12 is a sheet or film made of a light-transmissive material such as PET resin. The light diffusion layer 14 has a function of radially diffusely reflecting the point light L incident from the surface 14</b>A on the opposite side of the transparent base layer 12 to diffuse light K. As shown in FIG. As a result, it is possible to visually recognize the light dots D indicated by the point light L from all angles around the surface 14A side. On the other hand, the image of the display 500 incident from the surface 12A of the transparent base layer 12 opposite to the light diffusion layer 14 is transmitted through the light diffusion sheet 10 without additional diffusion as much as possible. Two or more light diffusion sheets 10 may be stacked and used.

There are various types of the light diffusion layer 14. For example, a transparent resin in which spherical fillers are dispersed is solidified into a layer/sheet to form fine unevenness on the surface 14A by the spherical fillers. , a mode in which fine unevenness is transferred to the surface 14A by solidifying a transparent resin on an original plate having fine unevenness, a mode in which fine unevenness is subsequently formed by sandblasting or the like on the surface 14A of the light diffusion layer 14 after curing, a polymer resin It is possible to select a mode or the like in which fine unevenness is formed on the surface 14A by phase-separating.

In order to improve the visibility of the light dots D, the haze value of the light diffusion sheet 10 is preferably 50% or more, more preferably 70% or more. On the other hand, in order to prevent deterioration of the image on the display 500, the total light transmittance of the light diffusion sheet 10 is preferably 70% or more, more preferably 80% or more.

For example, as the light diffusion sheet 10, a laminate film having a thickness of about 0.1 mm to 0.4 mm (specifically, 0.2 mm) can be used. The laminate film may have, for example, a structure in which an adhesive layer functioning as a light diffusion layer 14 is laminated on a transparent base layer 12 made of polypropylene or polyester. A plurality of laminated films can be stacked and used.

(pointing device)
As shown in FIG. 2A, the pointing device 20 includes a cylindrical housing 22, a light source module 24 housed inside the housing 22, and a light source module 24 housed inside the housing 22. It has a light source drive circuit 30 that controls the power (current/voltage) to be supplied. The light source module 24 includes, for example, a laser diode 25 that irradiates a laser beam that becomes a point light L, a collimator lens 26 that is arranged in the optical path of the laser beam and converts the laser beam into parallel light (straight light), and a It has a metal case 27 that covers it. The laser diode 25 can be appropriately selected from blue (wavelength 400 nm to 500 nm), green (wavelength 500 nm to 555 nm), and red (wavelength 630 nm to 680 mm) peak wavelengths. 400 nm to 500 nm) or green (wavelength 500 nm to 555 nm) laser diode 25 is selected.

The display 500 of the medical device often displays a red in-vivo image containing blood. Therefore, by forming light dots D of blue (wavelength 400 nm to 500 nm) or green (wavelength 500 nm to 555 nm) on the light diffusion sheet 10, they are additively mixed with the image light of the display 500, resulting in pink (blue and blue). Red primary color mix) or yellow (green and red primary color mix) for a bright glowing effect. Incidentally, in the case of the red laser diode 25, the optical dots D are likely to blend into the in-vivo image on the display 500, resulting in poor visibility.

Although the light source module 24 includes the laser diode 25 in this embodiment, an LED may be used.

The light source drive circuit 30 serves as a driver circuit that converts the DC voltage supplied from the power supply section 50 into a current/voltage suitable for the light source module 24 . Accordingly, a pair of connection wirings 37 connected to the power source section 50 are connected to the input side terminals of the light source driving circuit 30, and the terminals of the laser diode 25 are connected to the output side terminals. For example, the light source drive circuit 30 includes a regulator circuit 32 that steps up or steps down the DC voltage supplied from the power supply unit 50, and a stabilization circuit that stabilizes (regulates the voltage or current) the voltage adjusted by the regulator circuit 32. 34. The connection wiring 37 serves as wiring for transmitting power or control signals.

The housing 22 is a cylindrical member with a bottom, and has an opening for emitting the point light L at the front end face. A connection wiring 37 is inserted into the end surface of the rear end. In this embodiment, the housing 22 is separable into a front housing 22A and a rear housing 22B for assembly work. In view of the need for sterilization and disinfection, the housing 22 is preferably waterproof, the opening is sealed with transparent resin or transparent glass 22C, and the entrance and exit of the connection wiring 37 is also made of resin or adhesive. be sealed with The shape and size of the optical dots D can be adjusted by arranging a lens or filter in front of or behind the transparent glass 22C. For example, like the optical dot D1 in FIG. 1(C), the point light L can be made to have an annular shape by passing through an annular slit of the filter, or can have a rectangular annular shape like the optical dot D2. Furthermore, it is also possible to form a cross shape like the optical dot D3 in FIG. 1(C) or an X shape like the optical dot D4 in FIG. 1(C). Furthermore, like the optical dots D5 and D6 in FIG. 1C, a double structure having a dot or ring shape inside the ring shape or rectangular ring shape may be employed. It is preferable to set the maximum outer diameter of the optical dot D to, for example, 3.0 mm or more. This is because it is necessary to quickly visually recognize the optical dots D during surgery.

(Fixture)
As shown in FIGS. 3 and 4, the fixture 40 serves as a jig for fixing the pointing device 20 to the accessories S of the medical worker, such as spectacles, goggles, and clothes. The fixture 40 has a base portion 42 that holds the accessory member S, and a displacement portion 46 that supports the housing 22 of the pointing device 20 with respect to the base portion 42 so as to be swingable. The base 42 has a plurality of (here, three) claws 43 extending in the vertical direction, and the claws 43 hold the accessory member S therebetween. The displacement section 46 includes a vertical swing section 47 that vertically swings the pointing device 20 along a horizontal axis 47A, and a horizontal swing section 48 that horizontally swings the pointing device 20 along a vertical axis 48A. have. As a result, the direction of the optical axis of the pointing device 20 can be freely adjusted vertically and horizontally with respect to the accessory member S. In addition, it is also preferable that the claw 43 has a clip structure that can be freely opened and closed.

(foot switch)
As shown in FIGS. 2(B) and 2(C), the foot switch 60 has a pressure receiving portion 62 that is pressed by the sole of the foot of the medical worker, and a pressure receiving portion 62 that is movable in the vertical direction (pressing direction of the foot). A base housing 64 that supports the pointing device 20, a biasing member 66 such as a spring that is disposed in the base housing 64 and biases the pressure receiving portion 62 upward. has a switch section 68 for switching light emission/non-light emission of the light source module 24 in the . The bottom surface of the housing of the foot switch 60 may be provided with a member (such as rubber) that functions as a non-slip on the floor surface.

Note that the switch section 68 of the present embodiment is arranged in the conduction path of the connection wiring 37 to which power is supplied from the power supply section 50 and serves as a movable contact that mechanically turns ON/OFF the conduction of the connection wiring 37 . The mechanical switching operation of the switch portion 68 is preferably an alternate method, and when the pressure receiving portion 62 is reciprocated once, the conduction/non-conduction state is switched and the state is maintained. In the OFF state, when the medical staff pushes down the pressure receiving portion 62 once against the biasing force of the biasing member 66 to restore it, the point light L of the pointing device 20 is switched to the ON state in which it is continuously illuminated. that state is maintained. This makes it possible to operate foot switches of other medical devices even in the ON state. After that, when the pressure receiving portion 62 is pushed down once in the ON state to return, the point light L of the pointing device 20 is switched to the OFF state in which the pointing device 20 is extinguished, and this state is maintained.

In the present embodiment, the alternate foot switch 60 is exemplified, but the present invention is not limited to this, and the point light L of the pointing device 20 is continuously lit only while the pressure receiving portion 62 is pressed down. A momentary method for turning ON can be employed. Further, in the present embodiment, the case where the switch section 68 has a movable contact was exemplified, but the present invention is not limited to this, and a control signal meaning ON state/OFF state may be generated. By inputting this control signal to the light source driving circuit 30, the light source driving circuit 30 side can switch the power supply to the light source module 24 between the ON state and the OFF state.

Returning to FIG. 1, the connection wiring 37 extending from the foot switch 60 and/or the power supply section 50 has a connector 38 having a first connection portion 38A and a second connection portion 38B that are detachable from each other. By separating the first connection portion 38A and the second connection portion 38B, the pointing device 20 and the foot switch 60 can be separated. Specifically, the connection wiring 37 has an upper wiring 37A that connects the pointing device 20 and the first connection portion 38A, and a lower wiring 37B that connects the second connection portion 38B and the foot switch 60 and/or the power supply section 50. The pointing device 20 and the upper wiring 37A extending therefrom are desirably clean and, for example, preferably sterilized after each use. Disconnect from switch 60 and/or power supply 50 .

The upper wiring 37A on the pointing device 20 side is preferably 50 cm or longer, more preferably 100 cm or longer. Thereby, the first connecting portion 38A can be arranged near the hem of the surgical gown. Furthermore, the upper wiring 37A is preferably 200 cm or less, more preferably 170 cm or less, and still more preferably 150 cm or less. As a result, it is possible to prevent the upper wiring 37A from getting entangled in the foot of the medical worker or stepping on the upper wiring 37A with a shoe during movement. The lower wiring 37B on the side of the foot switch 60 is preferably 50 cm or longer, more preferably 100 cm or longer, and even more preferably 150 cm or longer. Furthermore, the lower wiring 37B is preferably 300 cm or less, more preferably 200 cm or less.

(Power supply part)
The power supply unit 50 is composed of a battery 52 and a battery case 54 that houses the battery 52 . As the battery 52, it is preferable to provide a plurality of dry batteries such as single, single, double, double, single, single, and the like, and it is possible to eliminate the need for battery replacement for a long period of time. A rechargeable dry battery may be used as the battery 52 . Furthermore, a lithium ion battery or the like may be employed as the battery 52 .

The power supply unit 50 is arranged in the base housing 64 of the foot switch 60 so that both are integrated. By separating the power supply unit 50 from the pointing device 20 in this way, the weight of the pointing device 20 (excluding the connection wiring 37 and the fixture 40) can be reduced to 20 grams or less, preferably 15 grams or less, more preferably 15 grams or less. It can be 10 grams or less. As a result, the load acting on the accessory member S such as eyeglasses can be reduced, so that the accessory member S can be prevented from slipping off the head. For example, since one AA battery weighs 20 grams or more, the battery accounts for 50% or more of the total weight of the conventional pointing device, which puts a heavy burden on the head. In order to solve this problem, it is conceivable to use a lightweight button battery or the like as a power supply, but in that case, the continuous lighting time is too short at several hours, making it inconvenient in the medical field where the surgery itself takes a long time. . The integration of the power supply unit 50 and the foot switch 60 is not limited to housing the power supply unit 50 in the base housing 64. The battery case 54 of the power supply unit 50 and the base housing 64 of the foot switch 60 are Including cases where they are linked in some form.

The power source unit 50 of the present embodiment is placed at a place other than the head of the medical worker (here, on the floor). As a result, the number of batteries 52 can be increased. The replacement/charging frequency of the battery 52 can be suppressed. For example, it is preferable to set the continuous lighting time by the power supply unit 50 to 20 hours or longer, preferably 30 hours or longer, and more preferably 50 hours or longer, in consideration of long-term operations in medical sites. Further, by integrating the power source unit 50 with the foot switch 60 as in the present embodiment, the number of parts of the medical optical pointing system 1 is reduced, and storage in a storage and installation work in an operating room are facilitated. be.

In addition, in this embodiment, although the power supply part 50 illustrated the storage battery type, this invention is not limited to this. For example, the power supply unit 50 may include an AC power outlet, power wiring extending therefrom, and an AC-DC converter that converts the AC voltage supplied from the power wiring into a DC voltage.

(Installation procedure)
FIG. 5 shows a usage example of the medical optical pointing system 1 in the medical field. The foot switch 60 and the lower wiring 37B are arranged in advance at the foot of the operating table in the operating room. Since the foot switch 60 is likely to slip and move forward when operated by the foot, it is preferable to arrange a weight section 600 that is heavier than the foot switch 60 on the back side of the foot switch 60 (operating table side). . By engaging the foot switch 60 with the weight 600, forward movement of the foot switch 60 can be suppressed. Furthermore, it is preferable to cover the foot switch 60 with a bag-shaped cover 650 . During surgery, the patient's blood, bodily fluids, and the like scatter to the feet. By replacing the cover 650 for each operation, the foot switch 60 can always be kept clean. After entering the operating room, it is desirable for the operating personnel not to touch anything other than the patient and surgical instruments. Therefore, in the front room, the medical staff fixes the pointing device 20 to the goggles via the fixture 40, adjusts the angle, and puts the upper wiring 37A in the posture of crawling on the front body of the jacket. Perform preoperative hand washing. Next, in cooperation with the helper, the surgical gown 700 is put on so as to cover the upper wiring 37A from the outside. As a result, the first connection portion 38A on the side of the upper wiring 37A hangs down near the hem of the surgical gown 700 . After that, when the operator enters the operating room and arrives at the operating table, the assistant connects the second connecting portion 38B on the side of the foot switch 60 to the first connecting portion 38A to prepare for the operation.

(Operation example)
FIG. 5 shows a state in which two operators are performing laparoscopic surgery. Each operator wears a pointing device 20 of the optical medical pointing system 1 . A foot switch 60 (power supply unit 50) of the optical medical pointing system 1 is arranged at the feet of each operator. In laparoscopic surgery, forceps and an electric scalpel are operated while confirming an image captured by an endoscope camera on the display 500 . A light diffusion sheet 10 is fixed in advance to the front surface of the display 500 . When the medical staff indicates a specific place in the image (within the surgical field), the pointing device 20 is turned on by the foot switch 60, and the light diffusion sheet 10 is irradiated with the point light L to form a light dot D. Form. The position of the light dot D is manipulated by the angle of the head.

In this medical optical pointing system 1, since a specific place can be indicated by the optical dots D without using both hands, a smooth operation is realized. Furthermore, since the pointing device 20 can be configured to have a weight of, for example, 10 grams or less, a sense of discomfort is less likely to occur when the accessory member S such as goggles is worn. In addition, since the heavy power supply unit 50 is arranged on the side of the foot switch 60, the surgeon hardly feels discomfort due to gravity. Furthermore, by arranging the light diffusion sheet 10, the optical dots D formed thereon can be visually recognized from various angles, so that the common optical dots D can be visually recognized simultaneously by a plurality of medical workers. It should be noted that one surgeon is often the mentor of the other surgeon. In this case, while the other operator operates forceps or an electric scalpel while looking at the display 500, one operator (instructor) uses the medical optical pointing system 1 for the display 500. Then, instruction can be given while indicating a specific place by the light dot D.

Furthermore, in the medical optical pointing system 1, since the main color of the optical dot D is blue or green, it becomes a bright color when combined with the red (blood color) image of the endoscope camera, resulting in extremely high visibility. It becomes high, and misidentification of an indicated place can be suppressed. Also, as in this example, when a plurality of people use the optical medical pointing system 1 at the same time, the color and/or shape of the optical dots D of one optical medical pointing system 1 and the color and/or shape of the optical dots D of the other optical medical pointing system It is also desirable to make the color and/or shape of one optical dot D different from each other. For example, the color of one optical dot D can be set to "blue" and the color of the other optical dot D can be set to "green."

Although laparoscopic surgery is illustrated in FIG. 5, the medical optical pointing system 1 can also be used in ordinary laparotomy. In this case, the light diffusion sheet 10 may be omitted, and the point light L of the pointing device 20 may be irradiated to a specific position of the organ in the actual surgical field to form the optical dots D on the organ. Also in this case, since the main color of the optical dots D is blue or green, the difference from the red color of the internal organs is large, so the visibility is extremely high.

(first modification)
FIG. 6(A) shows a first modification of the medical optical pointing system 1 . Here, the power supply unit 50 and the foot switch 60 are separate and connected by a wired connection wiring 37 . The power supply unit 50 may be placed at the foot of the operating room, placed in the medical worker's pocket, or fixed to the belt. When the power supply unit 50 is attached to a medical worker's pocket or the like, the connector 38 (the first connection part 38A and the second connection part 38B) is provided between the power supply part 50 and the foot switch 60 in the middle of the connection wiring 37. is desirable. The power supply unit 50 itself can also serve as the first connection unit 38A (a part of the connector 38).

(Second modification)
FIG. 6(B) shows a second modification of the medical optical pointing system 1 . Here, the power supply unit 50 and the footswitch 60 are separate, and the power supply unit 50 and the footswitch 60 are connected by wireless wiring. In this case, the power supply unit 50 and the foot switch 60 are provided with communication modules 70A and 70B for performing wireless communication with each other. The foot switch 60 incorporates a battery 72 for driving the communication module 70B. The power supply unit 50 is provided with a control device 76 that switches the power supplied to the pointing device 20 based on the received operation signal. An input operation to the foot switch 60 is converted into an operation signal by the switch section 68 and transmitted to the power supply section 50 by the communication modules 70A and 70B. The power supply unit 50 that has received the operation signal switches the pointing device 20 between the ON state and the OFF state by the control device 76 .

(Third modification)
FIG. 7(A) shows a third modification of the medical optical pointing system 1 described above. Here, in addition to the (first) light source module 24 and the (first) light source driving circuit 30 whose primary color is blue or green, the pointing device 20 includes a second light source module 84 whose primary color is red. and a second light source driving circuit 90 are incorporated. The configurations of the second light source module 84 and the second light source driving circuit 90 are the same as those of the first light source module 24 and the first light source driving circuit 30, and thus description thereof is omitted. The power supply unit 50 and the first light source drive circuit 30 are connected by a first connection wiring 37 . The power supply section 50 and the second light source drive circuit 90 are connected by a second connection wiring 87 .

A switch unit 68 provided in the foot switch 60 supplies power to the first light source module 24 and the first light source driving circuit 30 via the first connection wiring 37 in conjunction with the depression action of the medical staff. a second ON state that supplies power to the second light source module 84 and the second light source driving circuit 90 via the second connection wiring 87; The four states of an all-ON state in which both are lit and an all-OFF state in which both are extinguished are selectively switched. In the full ON state in which both are lit, the blue or green light dot and the red light dot are superimposed or parallel. In the case of superimposition, the optical dots may have a double structure, with one color on the inside and the other color on the outside.

In this way, for example, when the visibility of the blue or green optical dots D in the first ON state is poor, it is possible to switch to the optical dots D in the second ON state or all ON state. For example, when the excised site is dyed green or blue by injection of hyaluron containing a coloring agent such as indicocarmine, visibility can be improved by including a red light dot component.

(Fourth modification)
FIG. 7B shows a fourth modified example of the medical optical pointing system 1 described above. Here, the pointing device 20 incorporates a (first) light source module 24 whose primary color is blue or green, as well as a second light source module 84 whose primary color is red. Since the configuration of the second light source module 84 is the same as that of the first light source module 24, the description thereof is omitted. In addition to the light source drive circuit 30 , the pointing device 20 has a switching circuit 95 that selectively conducts the output of the light source drive circuit 30 to either the first light source module 24 or the second light source module 84 . The switching operation of the switching circuit 95 is manually performed by an operation switch 96 projecting from the housing of the pointing device 20 to the outside. When the footswitch 60 is turned on, the first light source module 24 or the second light source module 84 selected by the switching circuit 95 lights up.

(Fifth Modification)
FIGS. 8A to 8C show a fifth modification of the medical optical pointing system 1. FIG. Here, the pointing device 20 incorporates the light source module 24 but does not incorporate the light source drive circuit 30 . This makes the pointing device 20 even lighter. The light source driving circuit 30 is built in the footswitch 60 or the power supply section 50 . In this fifth modification, power controlled by the light source drive circuit 30 is supplied to the pointing device 20 via the connection wiring 37 .

(Sixth modification)
9 to 11 show a sixth modification of the medical optical pointing system 1. FIG. The foot switch 60 includes a pedal 69A (pressure receiving portion 62) that is swingably provided with respect to the base housing 64 and operates a switch portion (not shown) in the base housing 64, and a power button 69B. ing. Further, on the side surface of the base housing 64, a connector 69C to which the connection wiring 37 can be detachably connected is provided. The bottom surface of the base housing 64 of the foot switch 60 is provided with a member (for example, rubber or the like) that functions as a non-slip on the floor surface.

The battery case 54 of the power supply section 50 is fixed to the upper surface of the base housing 64 of the foot switch 60 . A battery (not shown) is accommodated in the battery case 54 . The power of the battery is guided to the connector 69C by internal wiring (not shown) via a switch section (not shown) inside the base housing 64 and the power button 69B. As a result, when the power button 69B is turned ON and the pedal 69A is depressed, the switch section is operated to supply power to the connector 69C.

An engaging portion 900 is provided in the middle of the connection wiring 37 for fixing the connection wiring 37 to the clothing of the medical worker's upper body. As shown in FIG. 9B, in this embodiment, the engaging portion 900 has a clip structure, and includes an elastic hinge portion 910, a pair of operating portions 912 provided on one side of the elastic hinge portion 910, and an elastic hinge portion. It has a pair of gripping portions 914 provided on the other side of 910 and a tubular wire holding portion 916 that holds the connection wire 37 at an arbitrary position. When the medical staff operates the operation portion 912, the grip portion 914 opens and closes. The elastic force of the elastic hinge portion 910 allows the grip portion 914 to grip the clothing.

The wiring holding portion 916 is composed of an outer tube 917, an inner tube 918 that is accommodated inside the outer tube 917 so as to be axially movable, and an inner tube 918 that is accommodated in the bottom portion of the outer tube 917 so that the outer tube 917 and the inner tube 918 are held together. It has a spring 919 that biases them away from each other. The outer tube 917 is formed with an outer hole 917A penetrating in the radial direction and through which the connection wiring 37 is inserted. The inner cylinder 918 is also formed with an inner hole 918A penetrating in the radial direction and through which the connection wiring 37 is inserted. The outer hole 917A and the inner hole 918A are set at approximate positions. When the medical staff slides the inner tube 918 against the biasing force of the spring 919 so as to push it into the outer tube 917, the outer hole 917A and the inner hole 918A are temporarily aligned. In this state, when the connection wiring 37 is inserted through both and the slide (pushing operation) is released, the connection wiring 37 is sandwiched between the outer hole 917A and the inner hole 918A by the restoring force of the spring 919 . As a result, the entire engaging portion 900 is fixed to the connection wiring 37 .

The engaging portion 900 is fixed at a location 10 cm or more and 150 cm or less from the pointing device 20 on the connection wiring 37 . The fixing position of the engaging portion 900 is more preferably fixed at a location 15 cm or more and 100 cm or less from the pointing device 20 on the connection wiring 37 . The engaging portion 900 stabilizes the attitude of the connecting wiring 37 and the pointing device 20 that are continuous above the engaging portion 900 by being fixed to the clothing. At the same time, the engaging portion 900 plays a role of supporting the dead weight of the connection wiring 37 continuing below itself using the clothing. In the present embodiment, if the medical staff slides the inner cylinder 918 against the biasing force of the spring 919 of the wire holding portion 916 so as to push the inner cylinder 918 into the outer cylinder 917, the connection wiring 37 can be removed. The engaging portion 900 can be moved to the position of . In this embodiment, the case where the engaging portion 900 has a clip structure is exemplified, but the present invention is not limited to this. Other structures such as hook-and-loop fastener structure, button structure, etc. can be adopted as long as they are structures that can be engaged with clothing.

As shown in FIG. 11, the medical staff fixes the pointing device 20 to the goggles with the fixture 40 and adjusts the angle, and at the same time uses the engaging portion 900 to connect the connection wiring 37 (upper wiring 37A). is fixed to the clothing (inner) or the breast pocket or collar of the surgical gown 700 . As a result, it is possible to prevent the entire weight of the connection wiring 37 from acting on the pointing device 20, so that the posture of the pointing device 20 during use is stabilized. The place where the engaging part 900 is fixed to the clothing needs to be changed according to the preferences of the medical staff. ), it is possible to adjust each time.

The optical pointing system for medical use of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

Reference Signs List 1 medical optical pointing system 10 light diffusion sheet 12 transparent base layer 14 light diffusion layer 20 pointing device 22 housing 22A front housing 22B rear housing 22C transparent glass 24 light source module 25 laser diode 26 collimator lens 27 metal case 30 Light source drive circuit 32 Regulator circuit 34 Stabilization circuit 37 Connection wiring 87 Second connection wiring 38 Connector 40 Fixture 42 Base 43 Claw 46 Displacement part 47 Vertical swing part 47A Horizontal axis 48 Horizontal swing part 48A Vertical axis 50 Power supply part 52 Battery 54 Battery Case 60 Foot Switch 62 Pressure Receiving Part 64 Base Case 66 Biasing Member 68 Switch Part 69A Pedal 69B Power Button 69C Connector 900 Engaging Part 916 Wiring Holding Part

Claims (16)

a light diffusion sheet attached to the front of a display of a medical device;
a pointing device including a light source module for irradiating the light diffusion sheet with point light for pointing;
a fixture for fixing the pointing device to the head of a medical worker;
a power supply unit that supplies power to the pointing device;
a foot switch operated by the foot of the medical worker to switch between irradiation and non-irradiation of the point light by the light source module;
A medical optical pointing system comprising: a pointing device including a light source module that emits point light for pointing;
a fixture for fixing the pointing device to the head of a medical worker;
a power supply unit disposed at a location other than the head for supplying power to the pointing device;
a foot switch operated by the foot of the medical worker to switch between irradiation and non-irradiation of the point light by the light source module;
A medical optical pointing system comprising: a pointing device including a light source module that emits point light for pointing;
a fixture for fixing the pointing device to the head of a medical worker;
a power supply unit that supplies power to the pointing device;
a foot switch operated by the medical staff's foot to switch between irradiation and non-irradiation of the point light by the light source module;
A medical optical pointing system, wherein the primary color of the point light is blue or green. Equipped with a light diffusion sheet attached to the front of the medical device display,
The pointing device irradiates the light diffusion sheet with point light for pointing,
The medical optical pointing system according to claim 2 or 3. The power supply unit is arranged in a place other than the head of the medical worker,
The medical optical pointing system according to claim 1 or 3. 3. The medical optical pointing system of claim 1 or 2, wherein the primary color of the point light is blue or green. a connection wire that connects the foot switch and the pointing device;
A connector provided in the middle of the connection wiring and capable of separating the connection wiring in the middle,
4. Medical optical pointing system according to any one of claims 1-3. The length from the pointing device to the connector in the connection wiring is 50 cm or more and 200 cm or less,
The medical optical pointing system according to claim 7. a connection wire that connects the foot switch and the pointing device;
An engaging portion provided in the middle of the connection wiring and fixing the connection wiring to the medical staff,
4. Medical optical pointing system according to any one of claims 1-3. The length from the pointing device to the engaging portion in the connection wiring is 10 cm or more and 150 cm or less,
10. The medical optical pointing system of claim 9. characterized by comprising a weight part that is attached to the foot switch and suppresses the movement of the foot switch,
4. Medical optical pointing system according to any one of claims 1-3. characterized by comprising a bag-shaped cover covering the foot switch,
4. Medical optical pointing system according to any one of claims 1-3. characterized in that the foot switch and the power supply unit are integrated,
4. Medical optical pointing system according to any one of claims 1-3. The pointing device is
a first light source module in which the primary color of the point light is blue or green;
and a second light source module in which the primary color of the point light is red,
4. Medical optical pointing system according to any one of claims 1-3. characterized in that the light diffusion sheet has a haze value of 50% or more,
The medical optical pointing system of claim 1. characterized in that the light diffusion sheet has a haze value of 50% or more,
5. The medical optical pointing system of claim 4.

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