JPH0215454Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a variable light field device for a multiple illumination lamp for surgery.

[Conventional technology]

The main requirements for a surgical lighting lamp include the ability to provide sufficient illuminance necessary for surgery, the ability to vary the size of the light field depending on the purpose of the surgery, and good operability. Regarding the size of the light field, as shown in the schematic diagram at the time of surgery shown in Figure 1,
At the beginning of the surgery, the incision on the skin A site is 20 to 30 minutes.
A wide illumination range of cm square is required, and then the light field needs to be narrowed down for surgery on the affected area B after incision.

As shown in FIG. 6, conventional surgical multiple illumination lamps only have a focus function that manually focuses the optical axes of the reflectors of each lamp to a single point. Therefore, as mentioned above, if a wide illumination range is required at the start of surgery, the optical axes S1 _{to S4} of the reflectors of the lights _L1 to _L4 are shifted as shown in FIG. In particular, the size of the light field was made variable.

[Problem that the invention attempts to solve]

However, the above method of changing the light field by shifting the optical axes S ₁ to _{S 4} causes uneven illuminance and is not easy to implement in practice. This will damage the Shadowless means that a shadow created by light from one direction is erased by light from another direction. For example, as shown in FIG. 8, if some obstacle R is present in the light beam Q, its shadow R' will be formed on the irradiation surface C. However, if this shadow R' is irradiated with light P, it is possible to erase the shadow R'. In other words, it is necessary that the optical axes from each direction coincide on the irradiation surface, which can be said to be the principle when using a surgical lighting lamp. The conventional method of varying the light field, that is, the method shown in FIG. 7 in which the optical axes of the reflectors of each lamp are shifted, is incorrect and has the drawback of impairing the shadowless effect.

[Means for solving problems and their effects]

The present invention has been made to solve the above problems.One light source is provided on the optical axis of one reflecting mirror, and the light flux emitted from the light source is reflected by the reflecting mirror and condensed. A surgical multi-lamp illumination light comprising a plurality of illumination lights arranged therein includes a rotatable handle, a means for transmitting rotational force of the handle, and a light source of the plurality of illumination lights by the transmission force. It is equipped with a light source vertical movement mechanism for simultaneously moving up and down in the same direction on the optical axis, and the means for transmitting the handle rotational force includes a rod member that moves forward and backward by rotation of the handle, and other parts of the rod member. It is characterized by comprising mounting members provided at predetermined angle intervals on a ring body whose ends are fixed, and the ends of which are respectively attached to the mounting members and connected to the base of the illumination lamp. With the above configuration, each of the plurality of light sources individually moves upward or downward at the same time relative to the reflecting mirror on the optical axis, so that each illumination lamp causes the reflected light to diffuse or converge, thereby making the light field variable. Moreover, since the optical axis of each light does not change, the shadowless effect is not impaired. Furthermore, it is extremely easy to operate.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram at the time of surgery. Reference numeral 1 denotes a multiple surgical illumination lamp installed vertically on the ceiling 2 of the operating room. In this embodiment, one multi-light illumination light 1 is provided on one base shaft 5, but it goes without saying that a plurality of illumination lights 1 may be provided. The multi-light illumination lamp 1 includes an arm 6,
7, it can be rotated horizontally, and the arm 8 and boom 9 can freely move up and down in the height direction, and the irradiation angle This allows it to be changed freely.

FIG. 3 is a partial plan view of the multiple illumination lamp 1,
FIG. 4 is a sectional view taken along the line YY' in FIG. As shown in FIG. 4, the multiple illumination light 1 includes the boom 9.
Both ends thereof are rotatably attached to a substantially ring-shaped outer frame 11 via attachment members 10. An outer cover 12 is attached to the upper opening of the outer frame 11 with a stopper 13 with a predetermined gap between the outer cover 12 and the upper end of the outer frame 11 .

Next, we will discuss the vertical movement mechanism of the light source and the force transmission means for vertical movement. In FIGS. 3 and 4, 3 is a handle, and a rod member 52 that moves forward and backward via a transmission screw 51 by rotating the handle 3, and the other end 52b of the rod member 52 are fixed. Wires 54 for moving the light source up and down are attached to attachment members 53a provided every 90 degrees on the ring body 53, respectively. The tips of the wires 54 are connected to the bases 56a of the light source lamps 56 via buffer springs 55 (FIG. 4) provided at the bases of the illumination lamps _L1 to _L4 , respectively. Reference numeral 57 denotes a guide portion for vertical movement of the light source lamp 56.

The operation of this embodiment configured as described above will be explained next. First, the position and angle of the multiple surgical illumination lamp 1 are determined in accordance with the first surgical site A of the patient 4 on the bed 21 (FIG. 1). Then, the focus adjustment device is adjusted to focus on the surgical site A.

Next, we will describe the operation of the vertical movement mechanism for the light source lamp in order to adjust the light field. In Figures 3 and 4,
When the handle 3 is turned clockwise, the rod member 52 is rotated clockwise via the transmission screw 51. Since the rod member 52 is fixed to the ring body 53, the rod member 52 is fixed to the ring body 53.
3 also rotates clockwise. The four wires 54 attached to the mounting member 53a of the ring body 53 have their tips connected to the bases 56 of the light source lamps 56 of the illumination lamps _L1 to _L4 .
Since the ring body 53 is rotated, the light source lamp 56 together with the wire 54 is guided by the vertical movement guide portion 57 and rises. As the light source lamp approaches the reflector, the angle of incidence on the reflector changes, the reflected light is diffused, and the light field becomes larger (Figure 2A). Next, when the handle 3 is turned counterclockwise, the wire 5 is turned in the opposite direction as described above.
4 is loosened, the light source lamp 56 is moved away from the reflecting mirror by the spring 55 at the tip of the wire, and the reflected light is converged and the light field becomes smaller. (Fig. 2 B) [Effect of the invention] As described above, the size of the light field can be adjusted by simply rotating the handle, and the light field of each illumination lamp is simultaneously expanded or contracted, and there is no change in the optical axis. Therefore, the shadowless effect is not impaired. Therefore, if the focus is always adjusted according to the surgical site, the light field can be changed freely by simply operating the handle, which helps to perform a good surgery.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of the operating room, Figure 2 A is a diagram of a single illumination lamp with the light source lamp brought closer to the reflector to enlarge the light field, and Figure 2 B is a diagram of the light source lamp being moved further away to reduce the light field. shows. Figure 3 is a partial plan view of the multiple illumination lamp, and Figure 4 is the Y--
It is a Y′ cross-sectional view. FIG. 5 is a diagram in which the light field is enlarged by vertical movement of the four light source lamps of this embodiment, and FIG. 6 is a schematic diagram in which the light field is reduced by converging the light. FIG. 7 shows a diagram in which the optical field of a conventional reflector is expanded by shifting the optical axis. FIG. 8 is an explanatory diagram of the shadowless effect. 1...Multi-light lighting, 2...Operating room ceiling, 3...
...Handle, 4...Patient, 5...Cloth, A...Skin site, B...Deeply affected area, C...Optical axis focal plane, F,
F′, F″……light field, L ₁ , L ₂ , L ₃ , L ₄ … illumination light,
S ₁ , S ₂ , S ₃ , S ₄ ... Optical axis, P, Q ... Luminous flux, R ...
...Obstacle, R'...Shadow, 11...Multiple illumination light 1
ring-shaped outer frame, 12... outer cover, 51... transmission screw, 52... rod member, 53... ring body, 53a
... Mounting member, 54 ... Wire, 55 ... Buffer spring, 56 ... Light source lamp, 56a ... Light source lamp base, 57 ... Light source lamp vertical movement guide.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of illumination lamps each having one light source on the optical axis of one reflecting mirror and condensing the luminous flux emitted from the light source by reflecting it on the reflecting mirror. The individually arranged multiple surgical illumination lamp includes a rotatable handle, a means for transmitting the rotational force of the handle, and each light source of the plurality of illumination lamps simultaneously moves up and down in the same direction by the transmission force. 1. A variable light field device for a surgical multi-light illumination lamp, characterized in that it is equipped with a light source vertical movement mechanism for controlling the light source. (2) The above-mentioned means for transmitting the rotational force of the handle includes a rod member 52 that moves forward and backward by rotation of the rotatable handle, and a ring body 53 to which the other end 52b of the rod member is fixed, at predetermined angle intervals. Claim 1 of the above-mentioned utility model registration claim is characterized in that the light source vertical movement wire 54 is provided with a mounting member 53a and a light source vertical movement wire 54 that is attached to the mounting member and whose tip is connected to the base of the illumination lamp. Variable light field device for multiple surgical illumination lights.