Surgical lighting system

Abstract

Disclosed is an illumination system for a surgical operation, the illumination system comprising: a light emitting device (100) for emitting a light beam transmitted in a first direction; the optical fiber cable (200) is used for transmitting the light beams; the light beam conversion device (300) is connected to the optical fiber cable (200) to receive the light beam and output an illumination light beam with an adjustable illumination direction, and the illumination direction is transverse to the first direction; and the mounting device (400) is configured to arrange the light beam conversion device on a surgical instrument (500) used in the surgical operation, and the surgical instrument can be fixed on the body of a patient or a surgical bed frame.

Description

[0001] This application claims priority to Chinese Patent Application No. 202320328634.4 filed on February 27, 2023, and the contents of the above-mentioned Chinese patent application disclosure are hereby cited in their entirety as a part of this application. Technical Field

[0002] The present disclosure relates to the technical field of medical devices, and in particular to a lighting system for surgical operations. Background Art

[0003] The surgical lighting system is an essential and commonly used equipment in the operating room. It is usually required to achieve continuous shadowless lighting of the patient's surgical site to provide a good observation environment for doctors. Utility Model Content

[0004] Therefore, an object of the present disclosure is to provide a surgical lighting system, which can provide continuous, shadowless lighting with adjustable brightness for narrow surgical channels and can achieve a large adjustment range of the lighting direction.

[0005] The features described below may be implemented individually or in any combination.

[0006] The present disclosure relates to an illumination system for surgical operations, the illumination system comprising: a light emitting device for emitting a light beam transmitted along a first direction; an optical fiber cable for transmitting the light beam; a light beam conversion device connected to the optical fiber cable to receive the light beam and output an illumination light beam with an adjustable illumination direction, wherein the illumination direction is transverse to the first direction; and a mounting device configured to set the light beam conversion device on a surgical instrument used in the surgical operation, the surgical instrument being capable of being fixed on a patient's body or an operating table.

[0007] In one embodiment, the light beam conversion device is configured to be rotatable relative to the mounting device to adjust the illumination direction of the illumination light beam.

[0008] In one embodiment, the light beam conversion device comprises a movable optical element, and the movable optical element is configured to adjust the illumination direction of the illumination light beam.

[0009] In one embodiment, the light beam conversion device comprises an optical assembly, wherein the optical assembly comprises a first optical element and a second optical element, wherein the first optical element is used to converge the light beam, and the second optical element has a reflective surface for deflecting the light beam.

[0010] In one embodiment, the first optical element and the second optical element are integrated into a single lens element, and the single lens element has a converging surface for converging the light beam and a reflecting surface for deflecting the light beam.

[0011] In one embodiment, the converging surface is one of a spherical surface, an aspherical surface, and a free-form curved surface.

[0012] In one embodiment, the single lens element is a gradient index lens.

[0013] In one embodiment, the light beam conversion device further includes: a shell connected to the optical fiber cable at a first end thereof and used to accommodate the optical component; an end cap closing the shell at a second end of the shell; a blocking member disposed between the optical component and the end cap; and an elastic member disposed between the end cap and the blocking member and elastically biasing the blocking member toward the optical component.

[0014] In one embodiment, the illumination direction of the illumination light beam can be adjusted within a range of -60° to 60°.

[0015] In one embodiment, the mounting device is configured to clamp the optical fiber cable, and the clamping position is adjustable.

[0016] In one embodiment, the mounting device includes: a base assembly, which is releasably connected to the surgical instrument; a clamping assembly, which is disposed on the base assembly and has a clamping state for fixing the optical fiber cable and a loosened state for releasing the optical fiber cable, wherein when the clamping assembly is in the loosened state, the optical fiber cable can rotate relative to the clamping assembly to adjust the illumination direction of the illumination beam.

[0017] In one embodiment, the clamping assembly is in the form of a universal joint.

[0018] In one embodiment, the surgical instrument includes a ring having a notch.

[0019] In one embodiment, the surgical instrument is a retractor, and is fixed to the patient's bone tissue via bone pins or fixed to the surgical bed frame via a surgical joint.

[0020] The present disclosure has the following advantages. The lighting system can provide continuous, adjustable-brightness shadowless lighting for narrow surgical channels, and can achieve a large adjustment range of the lighting direction, thereby improving the safety of surgical operations. The lighting system has a simple and compact structure and a small size, and will not block the placement of surgical tools and implants in the surgical channel. The lighting system can be used in conjunction with both a traditional microscope and a digital microscopic imaging device, and can clearly image the situation in the surgical channel in real time, greatly facilitating clinical medicine and teaching work. In particular, compared with known rechargeable headlamps, the light-emitting device of the lighting system disclosed in the present disclosure can continuously provide lighting light, and there will be no sudden power outage that affects the progress of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The advantages and purposes of the present disclosure can be better understood from the embodiments of the present disclosure described in detail below in conjunction with the accompanying drawings. In order to better show the relationship between the components in the accompanying drawings, the accompanying drawings are not drawn to scale. In the accompanying drawings:

[0022] Figure 1 An overall schematic diagram of a surgical lighting system according to an embodiment of the present disclosure is shown;

[0023] Figure 2 A schematic diagram showing the irradiation range of an illumination light beam of an illumination system for surgical operation according to an embodiment of the present disclosure;

[0024] Figure 3 A schematic diagram showing a portion of an optical fiber cable and a beam conversion device of a surgical illumination system according to an embodiment of the present disclosure;

[0025] Figure 4 Shown according to Figure 3 A schematic cross-sectional view of the connection between a portion of the optical fiber cable and a beam conversion device is shown;

[0026] Figure 5 An external schematic diagram of a beam conversion device of a surgical illumination system according to an embodiment of the present disclosure is shown;

[0027] Figure 6 Shows Figure 5 An external schematic diagram of the light beam conversion device in another direction is shown;

[0028] Figure 7 A schematic diagram showing a blocking member of a surgical illumination system according to an embodiment of the present disclosure;

[0029] Figure 8 A schematic diagram showing an end cap of a surgical illumination system according to an embodiment of the present disclosure;

[0030] Fig. 9A schematic diagram showing a mounting device of a surgical lighting system according to an embodiment of the present disclosure;

[0031] Fig.10 Shows Fig. 9 A cross-sectional view of a mounting device;

[0032] Figures 11a to 11d A schematic diagram showing various components of a mounting device for a surgical lighting system according to an embodiment of the present disclosure; and

[0033] Figures 12a to 12b A schematic diagram showing an optical component of a beam conversion device of a surgical illumination system according to another embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0034] Various embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted here that, in the accompanying drawings, the same figure marks are given to components having substantially the same or similar structures and functions, and repeated descriptions thereof will be omitted. Unless otherwise specified, the terms "first direction", "second direction", "rotation direction", etc. in this document are described relative to the drawings of the present disclosure. The term "including A, B, C, etc." does not exclude the possibility of including other components between A and B and / or between B and C. The description of "first" and its variants is merely to distinguish between the components and does not limit the scope of the present disclosure. Without departing from the scope of the present disclosure, "first component" can be written as "second component", etc.

[0035] The drawings in this specification are schematic diagrams, which assist in explaining the concept of the present disclosure and schematically show the shapes of various parts and their mutual relationships.

[0036] The known surgical lighting system is generally a headlamp worn by the doctor, but the headlamp has some problems. For example, wearing it for a long time can easily cause muscle fatigue and light shaking; the angle of the headlamp is not easy to adjust, which has limitations in use. In particular, for lighting small incisions and deep surgical channels, the existing headlamp cannot provide good continuous shadowless lighting.

[0037] Minimally invasive surgery is a development trend in recent years, and more and more surgeries need to be performed in small incisions and deeper surgical channels. Therefore, achieving illumination of narrow surgical channels and providing continuous shadowless illumination for narrow surgical channels has become an urgent problem to be solved in this field.

[0038] Below, refer to Figures 1 to 12b , an embodiment according to the present disclosure is described in detail.

[0039] like Figures 1 to 2As shown, a lighting system for surgical operation according to an embodiment of the present disclosure may include a light emitting device 100, an optical fiber cable 200, a beam conversion device 300, a connecting device 400, and a surgical instrument 500 used in surgical operation as a supporting device or a fixing device.

[0040] The light emitting device 100 may be a medical cold light source, emitting a light beam transmitted along a first direction, where the first direction may be Figure 2 The medical cold light source can provide a light beam with adjustable illumination intensity, and the adjustment of illumination intensity can be determined by the surgical operation channel and can be manually adjusted by the operator.

[0041] The optical fiber cable 200 is used to transmit the light beam emitted by the light emitting device 100 , and its form is known in the art and will not be described in detail here.

[0042] The light beam conversion device 300 is connected to the optical fiber cable 200 to receive the light beam emitted by the light emitting device 100 and output an illumination light beam 600 with an adjustable illumination direction. Figures 3 to 4 As shown, the beam conversion device 300 can be threadedly connected to one end of the optical fiber cable 200. Figure 2 As shown, the illumination direction of the illumination beam 600 is transverse to the first direction. For example, the illumination direction of the illumination beam 600 may be perpendicular to the first direction, or the central optical axis of the illumination beam 600 may be perpendicular to the first direction. Figure 2 In the vertical downward direction. Figure 2 FIG. 6 shows an illumination beam 600 with a certain degree of divergence in an enlarged manner, and the main propagation direction of the illumination beam 600 is vertically downward. The illumination beam 600 can cover the surgical area 700 .

[0043] The surgical instrument 500 can be fixed on the patient's body or on the surgical table. Figure 1 As shown, the surgical instrument 500 is, for example, a ring with a notch, such as a retractor, and can be fixed to the patient's bone tissue through a bone pin or fixed to the surgical bed frame through a special joint for surgery. Of course, the surgical instrument 500 can be other surgical instruments that realize the fixation of the lighting system on the patient or the surgical bed frame, such as a supporting device.

[0044] The mounting device 400 is configured to place the beam conversion device 300 on the surgical instrument 500. The specific structure of the mounting device 400 can be described as follows.

[0045] In this way, the lighting system can be fixed at or near the surgical site without the need for the doctor to wear or hold it, so there is no problem of light shaking. In addition, the lighting system can be used to directly illuminate small incisions and deeper surgical channels, with better lighting effects.

[0046] In some examples, the beam conversion device 300 is configured to be rotatable relative to the mounting device 400 to adjust the illumination direction of the illumination beam. This adjustment can be achieved manually, for example. In other examples, the beam conversion device 300 may include a movable optical element configured to adjust the illumination direction of the illumination beam, such as in the form of a scanning reflector. That is, the illumination direction of the illumination beam can be adjusted mechanically or optically, and of course, a combination of mechanical and optical methods is also possible. For example, the adjustment range of the illumination direction of the illumination beam can be -30° to 30°, or can reach -60° to 60°. The above angle range is relative to the vertical downward direction.

[0047] like Figure 4 As shown, the beam conversion device 300 includes an optical component, which includes a first optical element 310 and a second optical element 320. The first optical element 310 is used to converge the light beam, and the second optical element 320 has a reflective surface for deflecting the light beam. For example, the first optical element 310 is a plano-convex lens, which is used to refract the light beam from the light-emitting device and transmitted by the optical fiber cable; the second optical element 320 is a right-angle reflecting prism, which makes the light beam incident thereon turn 90 degrees, that is, vertically downward into the surgical channel. By selecting a suitable plano-convex lens, the spot size of the illumination beam can meet the expected requirements within the working distance, so that the illumination, uniformity, working distance and illumination range of the illumination beam can be adjusted.

[0048] like Figures 12a to 12b As shown, the first optical element 310 and the second optical element 320 described above are integrated into a single lens element 370, that is, the above two optical elements can be integrated into one lens element. Fig.12a As shown, the single lens element 370 may be a gradient refractive index (Grin) lens. The single lens element 370 may have a converging surface 371 for converging the light beam and a reflecting surface 372 for deflecting the light beam, as shown in FIG. Figure 12b As shown. For example, the converging surface 371 is one of a spherical surface, an aspherical surface, and a free-form curved surface. By designing the optical parameters of the single lens element 370, such as the curvature radius of the converging surface 371, the lens thickness, etc., the spot size of the illumination beam, the illumination beam's illumination intensity, uniformity, working distance, and illumination range, etc., can be adjusted.

[0049] By designing the optical components of the optical conversion device, the illumination, uniformity, lighting range, etc. required for the operation can be achieved at the required working distance. For example, the lighting system of the present invention can achieve a working distance of 120 mm and a lighting range of 70 mm, which meets the needs of a small and deep surgical channel. In addition, the lighting system of the present invention can achieve sufficiently strong illumination at the surgical site. For example, when the working distance is 120 mm, the lighting system of the present invention can achieve an illumination between 2500 lux and 100,000 lux, and in particular, can achieve an illumination between 100,000 and 500,000 lux. The lighting system of the present invention also has high flexibility and can be applied to surgical channels of different sizes.

[0050] Refer to the following Figures 4 to 8 Describe the assembly of optical components. Figure 4 As shown, the light beam conversion device 300 further includes a housing 330, a blocking member 340, an end cap 350, and an elastic member 360. The housing 330, for example, has a cylindrical structure and is connected to the optical fiber cable 200 at its first end (the end on the left side in the figure) and is used to accommodate optical components, such as the first optical element 310 and the second optical element 320. Figure 5 and 6 As shown, the housing 330 includes an external thread 331 at a first end thereof, an internal thread 332 at a second end thereof opposite to the first end, and a light beam outlet 333. The housing 330 is connected to the internal thread of the end of the optical fiber cable 200 via the external thread 331, as shown in FIG. Figure 4 As shown. The light beam from the optical fiber cable 200 is transmitted through the plano-convex lens and reflected by the right-angle reflection prism, and then emitted through the light beam outlet 333 to illuminate the surgical channel. The light beam outlet 333 can be a rectangular opening adapted to the size of the right-angle reflection prism or the size of the illumination light beam when it is emitted from the right-angle reflection prism. The end cap 350 closes the housing 330 at the second end of the housing 330. As shown Figure 8 As shown, the end cap 350 includes an end cap external thread 351, an end cap blind hole 352 and a mounting groove 353. The housing 330 is connected to the end cap external thread 351 of the end cap 350 via an internal thread 332. The end cap 350 and the housing 330 can be tightened by inserting a tool into the mounting groove 353 on the end surface of the end cap 350. The mounting groove 353 can have a variety of forms such as a straight groove, a cross groove or a hexagonal groove. The blocking member 340 is arranged between the optical component and the end cap 350, specifically, between the second optical element 320 and the end cap 350. As shown in FIG. Figure 7As shown, the blocking member 340 is provided with a blocking member blind hole 341, which corresponds to the end cover blind hole 352. The blocking member 340 can be a right-angle blocking member, which has a corresponding size to the right-angle reflecting prism. The elastic member 360 is arranged between the end cover 350 and the blocking member 340 and elastically biases the blocking member toward the optical component. The elastic member 360 is, for example, a compression spring. For example, the elastic member 360 is installed in the blocking member blind hole 341 and the end cover blind hole 352, and biases the blocking member 340 toward the second optical element 320. After the end cover is tightened, the elastic member applies force to the blocking member, and the blocking member is in direct contact with the right-angle reflecting prism, thereby pressing the right-angle reflecting prism and the plano-convex lens against the internal structure of the housing, such as a flange. By using a compression spring, a continuous biasing force can be always provided to the optical component.

[0051] like Fig. 9 and 10 As shown, the installation device 400 is configured to clamp the optical fiber cable 200, and the clamping position is adjustable. In this way, the irradiation position of the illumination beam can be adjusted. For example, the installation device 400 can include a base component and a clamping component.

[0052] The base assembly can be releasably connected to the surgical instrument 500, such as Fig. 9 The base assembly may include a base 410, a ball rod 420, a first knob 460, a base compression spring 470, and a steel ball 480. The base 410 is fixed on the surgical instrument 500, i.e., on the ring, under the pressure of the first knob 460 and the steel ball 480. Fig.11a As shown, the C-shaped groove 411 of the base 410 cooperates with the circular ring so that the base 410 can slide on the circular ring. Fig.11a and 11b As shown, one end 422 of the ball head rod 420 is inserted into the stepped hole 412 of the base 410, so that the ball head rod 420 is fixed to the base 410, for example, by welding or gluing. After the first knob 460 is inserted into the threaded hole 413 of the base 410, it can be tightly pressed against the surgical instrument of the retractor, that is, the ring, so as to achieve fixation.

[0053] The clamping assembly is disposed on the base assembly and has a clamping state for fixing the optical fiber cable and a loosening state for releasing the optical fiber cable. When the clamping assembly is in the loosening state, the optical fiber cable can rotate relative to the clamping assembly to adjust the illumination direction of the illumination beam. The clamping assembly can be in the form of a universal connector. Fig. 9 and 10As shown, the clamping assembly may include a spherical ring 430, a U-shaped piece 440, and a second knob 450. The contact surface between the U-shaped piece 440 and the ball head rod 420 is a spherical surface, and the contact surface between the ball head rod 420 and the spherical ring 430 is also a spherical surface, so the direction of the U-shaped piece 440 relative to the ball head rod 420 is adjustable, and it is a universal connection. The ball head rod 420 and the spherical ring 430 can be made of stainless steel, but the present disclosure does not limit the material thereof, and plastic or metal can be used. Fig.11c As shown, the spherical ring 430 has an inner spherical surface 431. Fig.11b The ball head 421 of the ball head rod 420 shown in FIG. 4 has a substantially spherical outer surface to cooperate with the inner spherical surface 431 of the spherical ring 430. Fig.11d As shown, the U-shaped member 440 has a circle of step ring 442 inside, and the inner diameter of the step ring 442 is slightly smaller than the outer diameter of the spherical ring 430, so that after the spherical ring is pressed into the U-shaped member, the spherical ring is blocked by the step ring 442 and cannot be removed. The U-shaped member 440 also has an internal thread 441, and the second knob 450 can be screwed on the internal thread 441, so that the optical fiber cable can be clamped.

[0054] When installing the optical fiber cable 200, place the optical fiber cable 200 into the U-shaped groove of the U-shaped member 440, adjust the position and angle of the optical fiber cable 200, and then rotate the second knob 450 to compress the optical fiber cable to fix it. At this time, the optical fiber cable 200 exerts pressure on the spherical ring 430, and the spherical ring 430 is pressed and closely contacts the ball head rod 420 and generates friction, so that the various parts of the clamping assembly are locked and the optical fiber cable is fixed.

[0055] The operation process of the above-mentioned lighting system is as follows. First, a special joint or bone pin is used to fix the retractor on the surgical bed frame or the patient's body, such as the patient's body surface. Then, the beam conversion device is connected to the optical fiber cable, and the position and angle of the beam conversion device are adjusted by adjusting the position and angle of the optical fiber cable so that the illumination beam 600 covers the surgical area 700. Then, the second knob 450 is tightened to fix the beam conversion device on, for example, the retractor. Finally, the illumination intensity of the light emitting device is adjusted so that the surgical area obtains the required illumination.

[0056] As described above, the lighting system of the present invention can provide continuous, adjustable-brightness shadowless lighting for narrow surgical channels, and can achieve a large adjustment range of the lighting direction, thereby improving the safety of surgical operations. In addition, the lighting system of the present invention has a simple and compact structure and a small size, and will not block the placement of surgical tools and implants in the surgical channel. Furthermore, the lighting system of the present invention can be used in conjunction with both a traditional microscope and a digital microscopic imaging device, and can clearly image the situation in the surgical channel in real time, greatly facilitating clinical medicine and teaching work. In particular, compared with known rechargeable headlamps, the light-emitting device of the lighting system of the present invention can continuously provide lighting light, and there will be no sudden power outage that affects the progress of the operation.

[0057] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the utility model to achieve the purpose of the present disclosure.

Claims

1. A surgical lighting system, characterized in that: The lighting system comprises: A light emitting device (100) emitting a light beam transmitted along a first direction; An optical fiber cable (200) for transmitting the light beam; a light beam conversion device (300) connected to the optical fiber cable (200) to receive the light beam and output an illumination light beam with an adjustable illumination direction, wherein the illumination direction is transverse to the first direction; and The mounting device (400) is configured to place the light beam conversion device on a surgical instrument (500) used in the surgical operation, and the surgical instrument can be fixed on a patient's body or an operating table.

2. The lighting system according to claim 1, characterized in that The light beam conversion device (300) is configured to be rotatable relative to the mounting device (400) to adjust the illumination direction of the illumination light beam.

3. The lighting system according to claim 1, characterized in that The light beam conversion device (300) comprises a movable optical element, and the movable optical element is configured to adjust the illumination direction of the illumination light beam.

4. The lighting system according to claim 1, characterized in that The light beam conversion device (300) comprises an optical component, wherein the optical component comprises a first optical element (310) and a second optical element (320), wherein the first optical element is used to converge the light beam, and the second optical element has a reflective surface for deflecting the light beam.

5. The lighting system according to claim 4, characterized in that: The first optical element and the second optical element are integrated into a single lens element (370), and the single lens element has a converging surface (371) for converging the light beam and a reflecting surface (372) for deflecting the light beam.

6. The lighting system according to claim 5, characterized in that The converging surface (371) is one of a spherical surface, an aspherical surface, and a free-form curved surface.

7. The lighting system according to claim 5, characterized in that The single lens element (370) is a gradient index lens.

8. The lighting system according to claim 4, characterized in that The light beam conversion device (300) further comprises: a housing (330) connected at a first end thereof to the optical fiber cable (200) and configured to accommodate the optical assembly; an end cap (350) for closing the housing at a second end of the housing; a blocking member (340) disposed between the optical component and the end cover; and An elastic member (360) is disposed between the end cover and the blocking member and elastically biases the blocking member toward the optical component.

9. The lighting system according to claim 2 or 3, characterized in that: The adjustment range of the illumination direction of the illumination light beam is from -60° to 60°.

10. The lighting system according to any one of claims 1 to 8, characterized in that: The installation device (400) is configured to clamp the optical fiber cable (200), and the clamping position is adjustable.

11. The lighting system according to claim 10, characterized in that The installation device (400) comprises: a base assembly releasably connected to the surgical instrument (500); A clamping assembly, arranged on the base assembly and having a clamping state for fixing the optical fiber cable (200) and a loosening state for releasing the optical fiber cable; Wherein, when the clamping assembly is in a loosened state, the optical fiber cable (200) can rotate relative to the clamping assembly to adjust the illumination direction of the illumination light beam.

12. The lighting system according to claim 11, characterized in that The clamping assembly is in the form of a universal joint.

13. The lighting system according to any one of claims 1 to 8, characterized in that: The surgical instrument (500) comprises a ring with a notch.

14. The lighting system according to claim 13, characterized in that The surgical instrument (500) is a retractor, and is fixed to the patient's bone tissue via bone pins or fixed to the surgical bed frame via a special surgical joint.

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