WO2024179399A1 - Illumination system for surgical operation - Google Patents

Abstract

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

Description

Surgical lighting systems

This application claims priority to Chinese Patent Application Nos. 202310171506.8 and 202320328634.4 filed on February 27, 2023, and the contents of the above-mentioned Chinese patent application disclosures are hereby cited in their entirety as a part of this application.

Technical Field

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

Background Art

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.

Summary of the invention

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

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

The present disclosure relates to an illumination system for surgical operations, the illumination system comprising: a light emitting device, emitting a light beam transmitted along a first direction; an optical fiber cable, used to transmit 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.

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.

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.

In one embodiment, the light beam conversion device comprises an optical component, wherein the optical component 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 reflecting surface for deflecting the light beam.

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.

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

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

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.

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

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

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

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

In one embodiment, the surgical instrument comprises a ring having a notch.

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.

BRIEF DESCRIPTION OF THE DRAWINGS

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:

FIG1 is an overall schematic diagram of a surgical lighting system according to an embodiment of the present disclosure;

FIG. 2 shows an illumination beam of a surgical illumination system according to an embodiment of the present disclosure. Schematic diagram of the shooting range;

FIG3 is 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;

FIG4 shows a schematic cross-sectional view of the connection between a portion of the optical fiber cable shown in FIG3 and a light beam conversion device;

FIG5 shows an external schematic diagram of a light beam conversion device of a surgical illumination system according to an embodiment of the present disclosure;

FIG6 shows an external schematic diagram of the light beam conversion device shown in FIG5 in another direction;

FIG7 is a schematic diagram showing a blocking member of a surgical illumination system according to an embodiment of the present disclosure;

FIG8 is a schematic diagram showing an end cap of a surgical illumination system according to an embodiment of the present disclosure;

FIG9 is a schematic diagram showing a mounting device of a surgical lighting system according to an embodiment of the present disclosure;

FIG10 shows a cross-sectional view of the mounting device of FIG9 ;

11a to 11d are schematic diagrams showing components of a mounting device for a surgical illumination system according to an embodiment of the present disclosure; and

12a to 12b are schematic diagrams showing optical components of a beam conversion device of a surgical illumination system according to another embodiment of the present disclosure.

DETAILED DESCRIPTION

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.

The accompanying drawings of this specification are schematic diagrams, which help explain the concept of the present disclosure and schematically show the various parts. The shapes of the points and their relationships.

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 particular, for the lighting of small incisions and deep surgical channels, the existing headlamp cannot provide good continuous shadowless lighting.

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.

Hereinafter, an embodiment according to the present disclosure will be described in detail with reference to FIGS. 1 to 12 b .

As shown in FIGS. 1 to 2 , 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 mounting device 400 , and a surgical instrument 500 used in surgical operation as a supporting device or a fixing device.

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 a horizontal rightward direction in FIG2. The medical cold light source may provide a light beam with adjustable illumination intensity, and the adjustment of the illumination intensity may be determined by the surgical channel and may be manually adjusted by the operator.

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.

The 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 beam 600 with an adjustable illumination direction. As shown in FIGS. 3 to 4 , the beam conversion device 300 can be threadedly connected to one end of the optical fiber cable 200. As shown in FIG. 2 , the illumination direction of the illumination beam 600 is transverse to the first direction. For example, the illumination direction of the illumination beam 600 can be perpendicular to the first direction, or the central optical axis of the illumination beam 600 can be perpendicular to the first direction, that is, in the vertical downward direction in FIG. 2 . FIG. 2 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.

The surgical instrument 500 can be fixed on the patient's body or on the surgical bed. As shown in FIG1 , the surgical instrument 500 is, for example, a ring with a notch, such as a retractor, and can be fixed on the patient's bone tissue through a bone pin or fixed on the surgical bed through a special joint for surgery. Of course, the surgical instrument 500 can be other surgical instruments that realize the fixing of the lighting system on the patient or the surgical bed. machinery, such as support devices.

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.

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.

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.

As shown in FIG4 , the light 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.

As shown in Figures 12a to 12b, 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. As shown in Figure 12a, the single lens element 370 can be a gradient refractive index (Grin) lens. The single lens element 370 can have a converging surface 371 for converging the light beam and a reflecting surface 372 for deflecting the light beam, as shown in Figure 12b. For example, the converging surface 371 is one of a spherical surface, an aspherical surface, and a free-form 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 intensity, uniformity, working distance, and illumination range of the illumination beam can be adjusted.

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 light illumination at the surgical site. For example, when the working distance is 120 mm, the lighting system of the present invention can achieve a light illumination between 2500 lux and 100,000 lux, and in particular, can achieve a light 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.

The assembly of the optical assembly is described below with reference to FIGS. 4 to 8. As shown in FIG. 4, the 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. As shown in FIGS. 5 and 6, the housing 330 includes an external thread 331 at its first end, an internal thread 332 at its second end opposite to the first end, and a beam outlet 333. The housing 330 is connected to the internal thread of the end of the optical fiber cable 200 through the external thread 331, as shown in FIG. 4. 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 beam outlet 333 to illuminate the surgical channel. The beam outlet 333 can be a rectangular opening adapted to the size of the right-angle reflection prism or the size of the illumination beam when the right-angle reflection prism is emitted. The end cap 350 closes the housing 330 at the second end of the housing 330. As shown in FIG8, 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 through the 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 plurality of forms such as a slot, a cross slot or a hexagonal slot. The blocking member 340 is arranged between the optical component and the end cap 350, for example, between the second optical element 320 and the end cap 350. As shown in FIG7, the blocking member 340 is provided with a blocking member blind hole 341, which corresponds to the end cap blind hole 352. The blocking member 340 can be a right angle block, which has a corresponding size to the right angle reflecting prism. The elastic member 360 is disposed between the end cap 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 cap blind hole 352, and biases the blocking member 340 toward the second optical element 320. After the end cap is tightened, the elastic member applies force to the blocking member, and the blocking member directly contacts 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.

As shown in Figures 9 and 10, 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.

The base assembly is releasably connected to the surgical instrument 500, and is disposed on the ring as shown in FIG9. 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 to the surgical instrument 500, i.e., the ring, under the pressure of the first knob 460 and the steel ball 480. As shown in FIG11a, the C-shaped groove 411 of the base 410 cooperates with the ring so that the base 410 can slide on the ring. As shown in FIGS. 11a and 11b, one end 422 of the ball rod 420 is inserted into the stepped hole 412 of the base 410, thereby fixing the ball rod 420 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 abutted against the surgical instrument, i.e., the ring, which is a retractor, to achieve fixation.

The clamping assembly is arranged 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 have the form of a universal connector. As shown in Figures 9 and 10, the clamping assembly can 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 form. The ball head rod 420 and the spherical ring 430 can be made of stainless steel, but the present disclosure does not limit their materials, and plastic or metal can be used. As shown in FIG11c, the spherical ring 430 has an inner spherical surface 431, and the ball head 421 of the ball head rod 420 shown in FIG11b has a substantially spherical outer surface to match the inner spherical surface 431 of the spherical ring 430. As shown in FIG11d, the U-shaped member 440 has a circle of step rings 442 inside, and the inner diameter of the step rings 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 rings 442 and cannot be disengaged. 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.

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.

The operation process of the above lighting system is as follows. First, use a special connector or bone needle to pull the retractor The device is fixed on the surgical bed frame or on 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, a retractor. Finally, the illumination intensity of the light emitting device is adjusted so that the surgical area obtains the required illumination.

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. In addition, 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.

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 this disclosure to achieve the purpose of this disclosure.

Claims (14)

A lighting system for surgical operation, wherein 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 A mounting device (400) is configured to place the light beam conversion device on a surgical instrument (500) used in the surgical operation, wherein the surgical instrument can be fixed on a patient's body or on a surgical bed. The illumination light beam illuminates a small incision and a deeper surgical channel. The lighting system according to claim 1, wherein the light beam conversion device (300) is configured to be rotatable relative to the mounting device (400) to adjust the lighting direction of the lighting light beam. The illumination system according to claim 1, wherein 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. The lighting system according to claim 1, wherein the light beam conversion device (300) comprises an optical component, the optical component comprising a first optical element (310) and a second optical element (320), the first optical element being used to converge the light beam, and the second optical element having a reflective surface for deflecting the light beam. The lighting system according to claim 4, wherein 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. The lighting system according to claim 5, wherein the converging surface (371) is one of a spherical surface, an aspherical surface, and a free-form curved surface. The illumination system of claim 5, wherein the single lens element (370) is a gradient index lens. The lighting system according to claim 4, wherein the light beam conversion device (300) Also includes: 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. The lighting system according to claim 2 or 3, wherein the adjustment range of the lighting direction of the lighting beam is -60° to 60°. The lighting system according to any one of claims 1 to 8, wherein the mounting device (400) is configured to clamp the optical fiber cable (200), and the clamping position is adjustable. The lighting system according to claim 10, wherein the mounting 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. The lighting system of claim 11, wherein the clamping assembly is in the form of a universal joint. The lighting system according to any one of claims 1 to 8, wherein the surgical instrument (500) comprises a ring with a notch. According to the lighting system of claim 13, the surgical instrument (500) is a retractor, and is fixed to the patient's bone tissue through bone pins or fixed to the surgical bed frame through a special surgical joint.