EP3812649A1 - Operationsleuchte - Google Patents

Operationsleuchte Download PDF

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Publication number
EP3812649A1
EP3812649A1 EP18923662.3A EP18923662A EP3812649A1 EP 3812649 A1 EP3812649 A1 EP 3812649A1 EP 18923662 A EP18923662 A EP 18923662A EP 3812649 A1 EP3812649 A1 EP 3812649A1
Authority
EP
European Patent Office
Prior art keywords
light
light source
illuminating
surgical
brightness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18923662.3A
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English (en)
French (fr)
Other versions
EP3812649A4 (de
Inventor
Lei Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Mindray Bio Medical Electronics Co Ltd
Original Assignee
Nanjing Mindray Bio Medical Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Mindray Bio Medical Electronics Co Ltd filed Critical Nanjing Mindray Bio Medical Electronics Co Ltd
Publication of EP3812649A1 publication Critical patent/EP3812649A1/de
Publication of EP3812649A4 publication Critical patent/EP3812649A4/de
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0435—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by remote control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/20—Lighting for medical use
    • F21W2131/205—Lighting for medical use for operating theatres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form

Definitions

  • the present disclosure relates to the technical field of medical equipment, and more specifically to a surgical light.
  • Surgical shadowless lights are necessary equipment commonly used in an operating room, and surgeons usually work under the surgical light for several hours or longer during surgery.
  • the surgical light In order to get sufficient illumination to illuminate the area where the surgical field is located, the surgical light usually focuses its light on the surgical field, and a single surgical light will produce, at the position where its light is focused, a high-illuminance light spot with a diameter of about 13-25 cm, the illuminance at the center of the light spot being up to 40,000 to 160,000 lux.
  • LED surgical light sources Due to the high light-emitting efficiency and strong directivity of the LED light sources, most LED surgical light products tend to achieve a central illuminance close to 160,000 lux. The higher the illuminance, the better users can perform delicate operations. Therefore, the LED surgical lights are beneficial to the user's delicate operations.
  • users Due to the relatively high illuminance of the LED surgical lights, users have poor viewing comfort during use, and long-term use will easily cause visual fatigue.
  • An embodiment of the present disclosure provides a surgical light, which can ensure both the illuminance required during surgery and the comfort of a user.
  • a surgical light comprising a light body, at least one illuminating unit being mounted in the light body, the illuminating unit comprising a light source and an optical system cooperating with the light source, the illuminating unit being able to form an illuminating light spot in a surgical field area and form an auxiliary illumination area at least in a range adjacent to the illuminating light spot, the illuminance of the auxiliary illumination area being lower than the illuminance of the illuminating light spot.
  • the illuminating unit not only can form an illuminating light spot in the surgical field area, but can also form an auxiliary illumination area in a range adjacent to the illuminating light spot to increase the illuminance of the area adjacent to the illuminating light spot, and in turn can decrease the contrast between the illuminances inside and outside the area of the illuminating light spot in the surgical field, increase illumination uniformity in the entire field of view, change the average brightness or illuminance of the illumination in the field of view of the human eye, and reduce glare, thereby increasing the comfort of long-term observation by surgeons.
  • An embodiment of the present disclosure discloses a surgical light, which decreases the contrast between the illuminances inside and outside the area of the illuminating light spot in the surgical field, changes the average brightness or illuminance of the illumination in the field of view of the human eye, and reduces glare, thereby increasing the comfort of long-term observation by surgeons.
  • Glare is a phenomenon of discomfort or reduced visual function caused by uneven distribution of illumination brightness or excessive brightness in the field of view of human eyes.
  • the generation of glare is mostly related to the brightness of a light source. When the brightness of the light source is too high, the lower the brightness of the surrounding environment, the more significant the glare.
  • a method for determining the generation of uncomfortable glare and the feeling of discomfort is summarized, which is generally calculated by a formula, for example, British glare index system used by CIBSE.
  • G 0.9 L S 1.6 ⁇ ⁇ 0.8 / L b ⁇ P 1.6
  • G glare feeling
  • L S is the brightness of a glare source in cd/m 2
  • ⁇ is a solid angle of the glare source relative to eyes
  • L b is the average brightness of a field of view in cd/m 2
  • P is the Guth position index, which is the position of the glare source relative to the line of sight.
  • G is between 10 and 30, 10 indicating that no glare is felt, and 30 indicating very uncomfortable glare. According to the results of subsequent research, its calculation and evaluation methods are similar to the above formula in basic form.
  • the problem often concerned is the glare caused by the light rays from a light source of the surgical light directly illuminating the human eyes, and thus the surgical light is manufactured such that the light rays are focused on the surgical field as much as possible, rather than scattered to the human eyes, thereby reducing the glare.
  • the area of the surgeon's field of view during surgery is much larger than the area of an illuminating light spot in a surgical field.
  • the illuminance of the area of the illuminating light spot in the surgical field is generally between 40,000 lux and 160,000 lux, the illuminance of the area outside the light spot in the surgical field is generally several hundred lux to several thousand lux, and the illuminance decreases rapidly as it moves away from the light spot.
  • the eyes search for a target in different areas, and the pupil size changes continuously, which will cause an uncomfortable glare symptom or feeling.
  • the surgical light provided by the present application not only can form an illuminating light spot in the surgical field area, but can also form an auxiliary illumination area in a range adjacent to the illuminating light spot, and in turn can decrease the contrast between the illuminances inside and outside the area of the illuminating light spot in the surgical field, and increase illumination uniformity in the entire field of view, thereby increasing the comfort of long-term observation by surgeons.
  • the surgical light provided by the present application comprises a light body 1.
  • at least one illuminating unit 2 is generally mounted inside a light holder.
  • the illuminating unit 2 comprises a light source and an optical system.
  • the light body 1 is a main body support structure of the surgical light, and as shown in Fig. 1 , the light body 1 comprises a suspension system 1-1, a light holder 1-2 and a handle 1-3.
  • One end of the suspension system 1-1 is mounted on a ceiling of an operating room, and the light holder 1-2 is suspended on the other end of the suspension system.
  • the light holder 1-2 generally comprises a light holder housing, the sterile handle 1-3 for manipulation by a surgeon, a control circuit for controlling the operating state of the surgical light, and a control interface for interacting with the surgeon.
  • One or more illuminating units 2 each comprising a light source and its optical system may be specifically mounted inside the light holder 1-2.
  • the light source and the optical system of the illuminating unit 2 are in cooperation with each other, and the light rays 3 emitted by the light source, after being collected, refracted or reflected by the optical system, form a light beam with a certain spatial distribution.
  • an illuminating light spot 6 is formed in a surgical field area 5, and an auxiliary illumination area 9 is formed at least in a range adjacent to the illuminating light spot 6, the illuminance of the auxiliary illumination area 9 being lower than the illuminance of the illuminating light spot 6.
  • the illuminating light spot 6 refers to a directional light beam with a certain spatial distribution that is formed by the light rays 3 emitted by the light source after being collected, refracted or reflected by the optical system, and in the surgical light, the directional light beam generally has a small angle of divergence and is directed below the surgical light.
  • the light rays 3 emerge from the light holder of the surgical light and are focused on the surgical field area 5 on the surface of the patient's body 4 to form a high-illuminance illuminating light spot 6 so as to facilitate the surgical operation by the surgeon.
  • the boundary of the illuminating light spot 6 is clear, which is very advantageous when the surgeon operates the surgical light to precisely position the illuminating light spot 6 on a surgical incision in the surgical field, such that the surgeon can quickly overlap the illuminating light spot 6 with the surgical incision, and enable the high-illuminance area to illuminate the site where precise operation is needed.
  • the surgeon operates the surgical light to precisely position the illuminating light spot 6 on a surgical incision in the surgical field, such that the surgeon can quickly overlap the illuminating light spot 6 with the surgical incision, and enable the high-illuminance area to illuminate the site where precise operation is needed.
  • the auxiliary illumination area 9 refers to a light beam with a certain spatial distribution that is formed by the light rays 3 emitted by the light source after being collected, refracted or reflected by the optical system.
  • the light beam has a large angle of divergence and a relatively uniform spatial intensity distribution and is directed below the surgical light, such that the surgical light has the function of large-range illumination. Consequently, the average illuminance in the range of the field of view of the surgeon is increased, and the difference and contrast between the illuminances inside and outside the illuminating light spot 6 in the surgical field area 5 are reduced. According to formula 1, with other conditions unchanged, increasing the average illuminance in the range of the field of view of the surgeon can ameliorate glare feelings, thereby improving the experience of the user 10 on the surgical light.
  • an auxiliary illumination area 9 is formed at least in a range adjacent to the illuminating light spot 6, i.e., the auxiliary illumination area 9 comprises at least an area adjacent to the illuminating light spot 6.
  • the "adjacent" described here and below means that the auxiliary illumination area 9 is next to the illuminating light spot 6.
  • the auxiliary illumination area 9 may be tangent to the illuminating light spot 6, and the contrast between the illuminances on two sides of the tangent point is reduced, so as to reduce visual fatigue caused by observation by the human eyes in the areas on both sides.
  • the auxiliary illumination area 9 is adjacent to the illuminating light spot 6 along a predetermined length of the circumference of the illuminating light spot, and if the predetermined length is the perimeter, the auxiliary illumination area 9 surrounds the illuminating light spot 6.
  • the auxiliary illumination area 9 comprises at least an area adjacent to the illuminating light spot 6, which illustrates the case where the auxiliary illumination area 9 is only adjacent to the illuminating light spot 6.
  • the case where the auxiliary illumination area 9 intersects the illuminating light spot 6 is also included, i.e., the auxiliary illumination area 9 not only comprises an area adjacent to the illuminating light spot 6, but also comprises an area overlapping with the illuminating light spot 6, and the light source and the optical system are arranged conveniently.
  • the auxiliary illumination area 9 comprises at least an area adjacent to the illuminating light spot 6, and the case where the illuminating light spot 6 is included within the auxiliary illumination area 9 is also included, so as to avoid the surgeon's visual fatigue to the greatest extent.
  • the auxiliary illumination area 9 is not smaller than the range of the field of view of the user 10 during a surgical operation. During surgery, the surgeon needs to perform the operation in a comfortable posture, and can touch a handle under the center of the surgical light to adjust the surgical light.
  • the distance from a lower surface of the surgical light to the surgical field area 5 is about 100 cm, and the distance from the surgeon's head to the surgical field area 5 is about 40 cm to 60 cm, and the light spot diameter of the illuminating light spot 6 varies according to the type of operation and is generally 13 cm to 30 cm.
  • the opening angle 7 of the illuminating light spot 6 relative to the eyes is about 12-36 degrees.
  • the opening angle 8 of the normal observation angle of view of the human eyes is about 50-60 degrees, the area of the field of view of the surgeon during surgery is much larger than the area of the illuminating light spot 6 in the field of view.
  • the auxiliary illumination area 9 is set to be not smaller than the range of the field of view of the user 10 during a surgical operation, i.e., the auxiliary illumination area 9 is set to be larger than or equal to the range of the field of view of the user 10 during the surgical operation, and thus within the range of the field of view of the user 10, the difference between the illuminances inside and outside the illuminating light spot 6 is small, thereby increasing the comfort of long-term observation by surgeons.
  • the illuminating unit 2 not only can form an illuminating light spot 6 in the surgical field area 5, but can also form an auxiliary illumination area 9 in a range adjacent to the illuminating light spot 6 to increase the illuminance of the area adjacent to the illuminating light spot 6, and in turn can decrease the contrast between the illuminances inside and outside the area of the illuminating light spot 6 in the surgical field, increase illumination uniformity in the entire field of view, change the average brightness or illuminance of the illumination in the field of view of the human eye, and reduce glare, thereby increasing the comfort of long-term observation by surgeons.
  • the light source may use an LED light source.
  • LED is a semiconductor device, and has the characteristics of small light-emitting area, high brightness, high light-emitting efficiency, etc.
  • the LED light source used has a high light-emitting efficiency and a high total power, and the LED surgical light usually has a high illuminance in the surgical field.
  • the LED as a light source has a small light-emitting area and a high brightness and is almost a point light source
  • the spatial distribution of the directional light beam of LED can be easily controlled by the matching optical system, such that more energy is concentrated in the center of the directional light beam, and the surrounding stray light is reduced, so that the surgical field area 5 is illuminated with a clear illumination boundary.
  • Less stray light and the illuminating light spot 6 with a clear boundary are beneficial to improve the optical energy utilization of the optical system, reduce the power of the whole machine, and improve the effect of showing the light spot.
  • Fig. 1 is a structural schematic diagram of a particular embodiment of a surgical light provided by the present disclosure.
  • the illuminating unit 2 comprises a first illuminating unit 2-1 and a second illuminating unit 2-2.
  • the first illuminating unit 2-1 comprises a first light source and a corresponding first optical system, and is used for forming an illuminating light spot 6.
  • the second illuminating unit 2-2 comprises a second light source and a corresponding second optical system, and is used for forming an auxiliary illumination area 9. That is, the surgical light comprises at least one first illuminating unit 2-1 and at least one second illuminating unit 2-2.
  • the first light source and the first optical system of the first illuminating unit 2-1 are in cooperation with each other to form the illuminating light spot 6.
  • the second light source and the second optical system of the second illuminating unit 2-2 are in cooperation with each other to form the auxiliary illumination area 9. That is, the second illuminating unit 2-2 is additionally provided inside the light body 1 to provide the auxiliary illumination area 9.
  • a plurality of second illuminating units 2-2 are comprised, and the plurality of second illuminating units 2-2 are uniformly distributed inside the light body 1.
  • the plurality of second illuminating units 2-2 cooperate to provide auxiliary illumination.
  • the second illuminating unit 2-2 is additionally provided inside the light body 1 to provide the auxiliary illumination area 9, and in other particular embodiments, the light source comprises a first light source and a second light source.
  • the first light source cooperates with the optical system to form the illuminating light spot 6; and the second light source cooperates with the optical system to form the auxiliary illumination area 9. That is, in one illuminating unit 2-1, the first light source and the second light source share the same optical system, and the illuminating light spot 6 and the auxiliary illumination area 9 are respectively formed through different cooperation of the first light source and the second light source with the optical system.
  • a second light source can be added to an existing surgical light that only forms the illuminating light spot 6 by using the first light source and the matching optical system, and the second light source is used to form the auxiliary illumination area 9 by using the optical system originally cooperating with the first light source.
  • the first light source is located at a focus or a virtual focus of the optical system
  • the second light source is located outside the focus and the virtual focus.
  • the first light source is located at the focus or the virtual focus of the optical system
  • the light beam formed by the first light source has a small angle of divergence and forms the illuminating light spot 6.
  • the second light source is disposed outside the focus or the virtual focus of the optical system.
  • the light emitted by the second light source is collected by the optical system and then emitted at a large angle of divergence, thereby forming background illumination, i.e., the auxiliary illumination area 9.
  • the uniformity of the auxiliary illumination area 9 generated by this method is slightly inferior to that generated by the method of separately providing the first lighting unit 2-1 and the second lighting unit 2-2.
  • the first light source and the second light source are separately disposed relative to the position of the optical system to form the illuminating light spot 6 and the auxiliary illumination area 9.
  • the optical system comprises a first optical part and a second optical part, the first optical part cooperating with the first light source to form the illuminating light spot 6, and the second optical part cooperating with the second light source to form the auxiliary illumination area 9.
  • the newly added light source i.e., the second light source
  • the new optical feature has the illumination effect of the second illuminating unit 2-2, thereby forming the auxiliary illumination area 9.
  • the first light source then cooperates with the first optical part to form the illuminating light spot 6.
  • the first light source and the second light source are respectively electrically connected to switches for respectively controlling the turning on and off of the first light source and the second light source. That is, both the first light source and the second light source can be turned on and off alone to meet and improve the illumination demands at different stages in the operation process. For example, before making a surgical incision, the patient's body 4 needs to be disinfected on a large area, and at this time, if the illuminating light spot 6 is used for illumination, it is likely to cause uncomfortable glare because the skin and the disinfectant reflect the light rays 3 strongly, the intensity of the illuminating light spot 6 is very high, and the light spot is small.
  • the second light source can be turned on alone, and the uniform large-range illumination of the second light source can be used for large-area disinfection for the patient's body 4.
  • the second light source may be turned on during the cleaning of the patient or an operation table to serve as a supplement to the regular illumination of the operating room.
  • the second light source can be turned on and off during the operation to meet different demands and preferences of the user 10. For example, when the surgeon needs to accurately position the illuminating light spot 6 of the surgical light in the early stage of the operation, the surgeon can turn off the second light source such that the edge of the light spot looks sharper to facilitate the sufficient overlapping of the illuminating light spot 6 and the surgical incision. When performing a long-term operation after the positioning is completed, the surgeon can turn on the second light source. As another example, when the surgeon performs certain precision operations and thinks that he/she can be more attentive when the surrounding environment is dark, the second light source may be turned off.
  • Fig. 2 is a curve of the illuminance of the illuminating light spot 6 of the first light source which is turned on alone.
  • the D 10 diameter of the illuminating light spot 6 of the surgical light is about 14 cm, and D50 is about 8.5 cm, which meets the requirements of YY 0627-2008 for the light spot distribution of the surgical light.
  • the illuminance of the illuminating light spot 6 decreases very quickly in the range outside D 10, and the illuminance is only 2% of the central illuminance when the diameter is 18 cm, and is less than 1% when the diameter is greater than 20 cm.
  • the edge of the light spot is clear, and there is almost no illumination on the periphery of the light spot.
  • the second light source is turned on alone.
  • Fig. 3 is a curve of the illuminance of a field of view of the second light source which is turned on alone. A uniform, large-range, low-illuminance illumination curve is provided within the range of the field of view in the plane of the surgical field.
  • Fig. 4 is a curve of the composite illuminance of the first light source and the second light source which are both turned on.
  • An illuminance curve is formed in the plane of the surgical field, that is, there is a very high illuminance at the center to meet the requirements of the operation, the D10 light spot diameter remains unchanged, and the background illumination in the area outside the diameter of the illuminating light spot 6 is uniform and has a reasonable brightness.
  • the surgical light further comprises a switch control unit electrically connected to the switches for automatically controlling actions of the switches according to a pre-stored control instruction to control the turning on and off of the first light source and the second light source.
  • the switch control unit may be a control chip in a master controller of the surgical light, or may be a separately arranged switch controller.
  • the switch control unit in which a control instruction is pre-stored, automatically controls, according to the control instruction, the switches respectively connected to the first light source and the second light source, so as to control the turning on or off of the first light source and the second light source respectively.
  • the pre-stored control instruction may be pre-stored by manually inputting by the user 10, or may be directly built-in during the preparation of the surgical light.
  • the second light source is connected to a second controller used for controlling the brightness thereof.
  • the second controller may adjust the power of the second light source through the control of the voltage or current thereof, thereby achieving the purpose of adjusting the brightness thereof, so as to meet the usage habits of different users 10 or different requirements for the brightness of the second light source in different surgical stages of the user 10.
  • the surgical light further comprises a brightness acquisition device used for acquiring a brightness instruction input by the user 10, wherein the second controller is electrically connected to the brightness acquisition device to correspondingly adjust the brightness of the second light source according to the brightness instruction acquired by the brightness acquisition device. That is, the second controller may correspondingly adjust the brightness according to the demands and preferences of the user 10.
  • the brightness acquisition device may specifically be an input device, such as a touch screen, a keyboard and a knob.
  • the user 10 inputs the required brightness instruction, the brightness acquisition device acquires the corresponding brightness instruction and sends it to the second controller, and the second controller correspondingly adjusts the brightness of the second light source according to the received brightness instruction. In this way, the user 10 can freely adjust the brightness of the second light source during the operation, so that the use of the surgical light is more user-friendly.
  • the first light source is connected to a first controller used for adjusting the brightness thereof; and the second controller is electrically connected to the first controller for synchronously adjusting the brightness of the second light source according to the adjustment of the brightness of the first light source by the first controller.
  • the first controller is used for adjusting the brightness of the second light source.
  • the first controller may adjust the power of the first light source through the control of the voltage or current thereof, thereby achieving the purpose of adjusting the brightness thereof. That is, the brightness of the first light source and the second light source may be respectively adjusted by the first controller and the second controller, the second controller is electrically connected to the first controller such that when the first controller adjusts the brightness of the first light source, the second controller automatically and correspondingly adjust the brightness of the second light source.
  • the brightness of the second light source when the surgeon increases the brightness of the first light source by means of the first controller, the brightness of the second light source is synchronously increased by the second controller, and when the surgeon decreases the brightness of the first light source by means of the first controller, the brightness of the second light source is synchronously decreased by the second controller.
  • the magnitude of change in the brightness of the second light source and the magnitude of change in the brightness of the first light source may be proportionally changed, and may also be increased or decreased simultaneously according to another calculation logic.
  • the surgical light further comprises a diameter control device used for adjusting the light spot diameter of the illuminating light spot 6, wherein the second controller is electrically connected to the diameter control device for synchronously adjusting the brightness of the second light source according to the adjustment of the light spot diameter of the illuminating light spot 6 by the diameter control device.
  • the diameter control device may be an operating handle of the surgical light, and the user 10 controls the light spot diameter of the illuminating light spot 6 by means of the operating handle.
  • the second controller is electrically connected to the diameter control device, and thus when the diameter control device adjusts the light spot diameter of the illuminating light spot 6, the brightness of the second light source is correspondingly adjusted.
  • the brightness of the second light source is increased when the light spot diameter increases, and the brightness of the second light source is decreased when the light spot diameter decreases.
  • the specific correspondence of the change in the light spot diameter and the change in the brightness of the second light source may be set as required, which is not specifically limited here. That is, the brightness of the second light source may be changed according to the adjustment of the diameter of the illuminating light spot 6.
  • the second controller controls the second light source to synchronously increase the brightness
  • the surgeon increases the diameter of the illuminating light spot 6 of the surgical light by means of the diameter control device
  • the second controller controls the second light source to synchronously decrease the brightness
  • auxiliary illumination area by means of additionally providing the first illuminating unit 2-1 or additionally providing the second light source is respectively as described above.
  • the glare may be improved as required without additionally providing the second illumination unit 2-2 or additionally providing the light source, but by only changing the illumination distribution of the illuminating light spot in the surgical field area of the surgical light.
  • Fig. 5 it is a structural schematic diagram of another particular embodiment of a surgical light provided by the present disclosure.
  • the illuminating unit 2 comprises a plurality of light sources, and the optical system cooperates with the plurality of light sources to form an illumination distribution including the illuminating light spot and the auxiliary illumination area.
  • the matching optical system of the illuminating unit 2 By changing the design of the matching optical system of the illuminating unit 2, more energy is distributed outside the original illuminating light spot of the surgical light, thereby increasing the average illuminance in the entire range of the field of view of the surgeon and reducing glare discomfort.
  • the flexibility of control is sacrificed to some extent and the user cannot be absolutely satisfied, the comfort can be improved to a certain extent, and at the same time the cost is low.
  • the light rays 3 emitted by the illuminating unit 2 of the surgical light have a larger angle of divergence, but most of its energy is in the range of 3-1, and this part of the energy forms a small-range, high-brightness illumination light spot in the surgical field.
  • a small part of the energy is in the range 3-2 at the periphery, and this range is substantially comparable to or larger than the range of the field of view of the surgeon, forming the background illumination for the entire surgical field in the surgical field area, i.e., the auxiliary illumination area.
  • the ratio of the illuminance value of the auxiliary illumination area to the maximum illuminance value at the center of the illuminating light spot is in the range of 1 : 20 to 1 : 80.
  • the above formula 1 is mainly for the evaluation of the light source system, but during the use of the surgical light, the surgeon observes the illuminating light spot in the surgical field and the area outside the illuminating light spot. Human tissues and surgical instruments are generally located inside the illumination light spot, and objects such as sterile cloth, the surgeon's arm gloves and surgical instruments are located in the area outside the illumination light spot. These objects have different light reflectivities and are different in the brightness in the human eyes.
  • the illuminance value of the large-range illumination in the present disclosure is not simply calculated according to formula 1, and needs to be determined according to the clinical evaluation and the surgeon's preferences during actual use.
  • the ratio of the illuminance value of the auxiliary illumination area to the maximum illuminance value at the center of the light spot in the surgical light is in the range of 1 : 20 to 1 : 80, which can meet the requirements of surgical illuminance and is beneficial for the comfort of long-term observation by surgeons.
  • the uniformity of the auxiliary illumination area is of great help to improve comfort.
EP18923662.3A 2018-06-22 2018-06-22 Operationsleuchte Pending EP3812649A4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/092381 WO2019241996A1 (zh) 2018-06-22 2018-06-22 一种手术灯

Publications (2)

Publication Number Publication Date
EP3812649A1 true EP3812649A1 (de) 2021-04-28
EP3812649A4 EP3812649A4 (de) 2021-06-02

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EP18923662.3A Pending EP3812649A4 (de) 2018-06-22 2018-06-22 Operationsleuchte

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EP (1) EP3812649A4 (de)
CN (1) CN109073177B (de)
WO (1) WO2019241996A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110220140B (zh) * 2019-07-08 2024-04-09 北京大学第三医院（北京大学第三临床医学院） 手术室补充照明系统及其控制方法
EP3889493A1 (de) * 2020-03-30 2021-10-06 TRUMPF Medizin Systeme GmbH + Co. KG Chirurgisches lichtsystem und verfahren zum betreiben eines chirurgischen lichtsystems

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WO2019241996A1 (zh) 2019-12-26
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CN109073177B (zh) 2022-09-09

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