Operating bed

Abstract

The utility model provides an operating bed which comprises a stand column, a bed body installed at the top end of the stand column and a position lamp arranged on the stand column or the bed body. The position lamp comprises a light-emitting unit, a convex lens and a polarized free-form surface lens which are sequentially arranged in the light path direction. The convex lens is used for reducing the light-emitting angle of the light-emitting unit to 60-100 degrees; the polarized free-form surface lens is used for polarizing and shaping light passing through the polarized free-form surface lens in the width direction of the bed body towards the direction away from the stand column so that a preset light spot pattern can be formed on the ground below the edge of the bed body, and the position of the preset light spot pattern corresponds to the stand column in the length direction of the bed body. According to the scheme, the preset light spot pattern can be formed on the ground below the edge of the bed body, the position of the preset light spot pattern corresponds to the stand column in the length direction of the bed body, medical staff can judge the position of the stand column of the operating bed more visually through the preset light spot pattern, and collision between a C-arm ball head and the stand column of the operating bed is avoided when C-arm equipment is used; and safety and reliability are improved.

Description

Technical Field

[0001] The utility model belongs to the field of medical devices, and particularly relates to an operating table. Background Art

[0002] At present, when the operating table products on the market are used clinically, a sterile sheet will be laid on the tabletop of the operating table. When the sterile sheet is too long, it will block the position of the operating table column.

[0003] When intraoperative fluoroscopy is required, a C-arm device is needed to rotate the X-ray source and the detector in a plane to generate a three-dimensional image. The ball head end of the C-arm needs to be placed at the bottom of the operating table, and the other end needs to be at the top of the operating table. Normally, the ball head end of the C-arm needs to be misaligned in the length direction of the operating table so that it will not collide with the column when the ball head end enters the bottom of the operating table horizontally. However, since the position of the operating table column is blocked, the ball head end of the C-arm and the column may be in the same position in the length direction of the operating table and overlap in the width direction of the operating table. When the ball head end of the C-arm enters the bottom of the operating table from the width direction of the operating table, it may cause the ball head end of the C-arm to collide with the column of the operating table, affecting the use of the C-arm device. Summary of the Utility Model

[0004] The technical object of the utility model is to provide an operating table, which can more intuitively display the position of the operating table column through a position lamp, and avoid the collision between the C-arm ball head and the operating table column when medical staff use the C-arm device.

[0005] To solve the above technical problems, the utility model is realized as follows. An operating table is provided, which includes a column, a tabletop installed at the top end of the column, and a position lamp arranged on the column or the tabletop; the position lamp includes a light-emitting unit, a convex lens, and a polarized free-form lens arranged in sequence along the optical path direction; the convex lens is used to reduce the light-emitting angle of the light-emitting unit to 60°-100°; the polarized free-form lens is used to polarize and shape the light passing through it in the width direction of the tabletop away from the column, so as to form a predetermined light spot pattern on the ground below the edge of the tabletop, and the position of the predetermined light spot pattern corresponds to the column in the length direction of the tabletop.

[0006] Further, the position lamp further includes a LOGO template arranged in the light-emitting direction of the polarized free-form lens. The outer contour shape of the LOGO template is similar to the predetermined light spot pattern, and the LOGO template is provided with a pattern.

[0007] Further, the position lamp is located on the bottom side of the bed body and beside the column. The light-emitting unit, the convex lens, and the polarization free-form lens are located inside the bed body. An light outlet through which the light passing through the LOGO template can pass is provided on the bottom side of the bed body.

[0008] Further, the LOGO template is detachably assembled to the light outlet.

[0009] Further, one position lamp is provided on each of the two long side edges of the bed body. The positions of the two position lamps correspond to each other and are respectively located on the long side edges of the bed body close to the column.

[0010] Further, the predetermined light spot pattern includes a rectangle, a square, a waist shape, or a trapezoid.

[0011] Further, in the height direction, the projection of the predetermined light spot pattern is outside the edge of the bed body.

[0012] Further, the length of the predetermined light spot pattern is equal to or greater than the size of the column.

[0013] Further, the illuminance at each part of the predetermined light spot pattern is uniform.

[0014] Further, the light-emitting unit uses an LED light source with a divergence angle of 180°. One side of the convex lens close to the LED light source is a concave surface, and the other side is a convex surface. The LED light source is accommodated in the concave space of the convex lens.

[0015] Compared with the prior art, the beneficial effects of the operating bed in the present utility model are as follows:

[0016] In this solution, a position lamp is provided on the bed body. The position lamp includes a light-emitting unit, a convex lens, and a polarization free-form lens. The light-emitting unit emits light, and then the convex lens is used to converge the light emitted by the light-emitting unit and reduce its divergence angle to 60° - 100°. After that, the polarization free-form lens performs polarization and shaping, so that the light is offset towards the outside of the operating bed, thereby forming a predetermined light spot pattern on the ground below the edge of the bed body. Since the position of the predetermined light spot pattern corresponds to the column in the length direction of the bed body, medical staff can more intuitively judge the position of the operating bed column through the predetermined light spot pattern formed by the position lamp, avoiding the collision between the C-arm ball head and the operating bed column when using the C-arm device, and being safer and more reliable. Description of the Drawings

[0017] Figure 1 is a partial structural schematic diagram of the operating bed in the embodiment of the present utility model;

[0018] Figure 2 is a simplified structural schematic diagram of the position lamp of the operating bed in the embodiment of the present utility model;

[0019] Figure 3a It is a projection schematic diagram of the position lamp of the operating bed during side view in the embodiment of the present utility model;

[0020] Figure 3b It is a projection schematic diagram of the position lamp of the operating bed during top view in the embodiment of the present utility model;

[0021] Figure 4 It is a schematic diagram of the relationship between the position lamp and the column in the embodiment of the present utility model;

[0022] Figure 5 It is a schematic diagram of the divergence angle range of the light-emitting unit in the embodiment of the present utility model;

[0023] Figure 6 It is a schematic diagram of the divergence angle range of the light-emitting unit after passing through the convex lens in the embodiment of the present utility model;

[0024] Figure 7 It is a schematic diagram of equally dividing the light-emitting angle into N parts in the length direction in the embodiment of the present utility model;

[0025] Figure 8 It is a light intensity distribution curve graph in the length direction of the predetermined light spot pattern in the embodiment of the present utility model;

[0026] Figure 9 It is a schematic diagram of the lens structure obtained according to the light intensity distribution curve in the embodiment of the present utility model;

[0027] Figure 10 It is a schematic diagram of equally dividing the predetermined light spot pattern into N parts in the width direction in the embodiment of the present utility model;

[0028] Figure 11 It is a light intensity distribution curve graph in the width direction of the predetermined light spot pattern in the embodiment of the present utility model;

[0029] Figure 12 It is a schematic diagram of dividing the surface shapes in the length direction and the width direction to establish N geometric data in the embodiment of the present utility model;

[0030] Figure 13 It is a schematic cross-sectional view of the polarization free-form lens designed in the embodiment of the present utility model;

[0031] Figure 14 It is a schematic diagram of the structure of the polarization free-form lens designed in the embodiment of the present utility model.

[0032] In the drawings, each reference numeral represents: 1, column; 2, bed body; 3, position lamp; 31, light-emitting unit; 32, convex lens; 33, polarization free-form lens; 34, LOGO template; 4, predetermined light spot pattern. Detailed implementation manners

[0033] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0034] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0036] In this embodiment, in combination with Figures 1-4 , a surgical bed is provided, including a column 1, a bed body 2 installed at the top of the column 1, and a position lamp 3 provided on the column 1 or the bed body 2; the position lamp 3 includes a light-emitting unit 31, a convex lens 32, and a polarizing free-form lens 33 arranged in sequence along the optical path direction; the convex lens 32 is used to reduce the light-emitting angle of the light-emitting unit 31 to 60° - 100°; the polarizing free-form lens 33 is used to polarize and shape the light passing through it in the width direction of the bed body 2 away from the column 1, so as to form a predetermined light spot pattern 4 on the ground below the edge of the bed body 2, and the position of the predetermined light spot pattern 4 corresponds to the column 1 in the length direction of the bed body 2.

[0037] In this solution, a position light 3 is provided on the column 1 or the bed body 2. The position light 3 includes a light-emitting unit 31, a convex lens 32, and a polarized free-form lens 33. The light-emitting unit 31 emits light, and then the convex lens 32 is used to converge the light emitted by the light-emitting unit 31, reducing its divergence angle to 60°-100°. After that, the polarized free-form lens 33 performs polarization and shaping. Here, polarization means deflecting the light by an angle, and shaping means changing the shape of the light field profile, so that the light is offset outward from the operating table, thereby forming a predetermined spot pattern 4 on the ground below the edge of the bed body 2. Since the position of the predetermined spot pattern 4 corresponds to the column 1 in the length direction of the bed body 2, medical staff can more intuitively judge the position of the column 1 of the operating table through the predetermined spot pattern 4 formed by the position light 3, avoiding the collision between the C-arm ball head and the column 1 of the operating table when using the C-arm device, which is safer and more reliable.

[0038] Furthermore, the position light 3 further includes a LOGO template 34 arranged in the light-emitting direction of the polarized free-form lens 33. The outer contour shape of the LOGO template 34 is similar to the predetermined spot pattern 4, and the LOGO template 34 is provided with a pattern.

[0039] The predetermined spot pattern 4 can be rectangular, square, waist-shaped, trapezoidal, etc., and can be adaptively designed according to the actual situation. In this embodiment, the predetermined spot pattern 4 is rectangular, its length can be 353-363 mm, and its width can be 60-80 mm. In the height direction, the projection of the predetermined spot pattern 4 is outside the edge of the bed body 2, and the illuminance at each part of the predetermined spot pattern 4 is uniform. Combining with the pattern of the LOGO template 34, a spot with a pattern can be displayed. Since the spot is displayed outside the projection of the edge of the bed body 2 in the height direction, even if the column 1 is blocked by a sterile sheet on the bed surface of the operating table, medical staff can still judge the position of the column 1 by observing the position of the spot pattern, preventing the ball head from colliding with the column 1 when using the C-arm device. Moreover, the pattern of the LOGO template 34 can be set according to the actual situation, such as setting letters, words, shapes, or combinations, etc. On the one hand, it can display the information of the operating table, and on the other hand, it can also be used as a mark for the position of the column 1.

[0040] Furthermore, the position light 3 is located on the bottom side of the bed body 2 and beside the column 1. The light-emitting unit 31, the convex lens 32, and the polarized free-form lens 33 are located inside the bed body 2, and the bottom side of the bed body 2 is provided with a light outlet for the light passing through the LOGO template 34.

[0041] Specifically, in this embodiment, a position lamp 3 is provided on each of the two long sides of the bed body 2. The positions of the two position lamps 3 correspond to each other and are respectively located on the long side of the column 1 close to the bed body 2; the LOGO template 34 is detachably assembled to the light outlet. By respectively arranging a position lamp 3 at the bottom of each of the two long sides of the bed body 2, in this way, it is equivalent to the two position lamps 3 being symmetrically arranged, and a predetermined light spot pattern 4 can be formed on both sides of the operating lamp. Therefore, medical staff can see the predetermined light spot pattern 4 on both sides of the operating bed, so as to judge the position of the column 1 and avoid the collision between the C-arm ball head and the column 1. In some embodiments, a position lamp 3 can be respectively arranged on the opposite sides of the column 1, and the two position lamps 3 correspond to the two long sides of the bed body 2 respectively. The installation position of the position lamp 3 is lower than the height of the column 1, and can be between the center of the column 1 and the corresponding side surface, and more than half of the height of the column 1. In this way, it is convenient for the projection of the predetermined light spot pattern 4.

[0042] The light emitting unit 31, the convex lens 32 and the polarized free-form lens 33 can be respectively and independently fixed inside the bed body 2 or the column 1. The fixing methods include but are not limited to being fixed by means of groove clamping, being fixed by screws, being fixed by a fixing seat, etc. As long as the relative position relationship of the light emitting unit 31, the convex lens 32 and the polarized free-form lens 33 is maintained, the LOGO template 34 can be assembled with the light outlet by means of screw assembly or snap assembly, etc. The internal hollow pattern of the LOGO template 34 can be adaptively designed according to the actual situation. In this way, due to the detachable assembly, different designed LOGO templates 34 can be installed on the light outlet, so that the predetermined light spot pattern 4 has different display forms.

[0043] In some embodiments, the position lamp 3 can also be set as an independent light module. For example, the position lamp 3 itself has a housing, and the light emitting unit 31, the convex lens 32 and the polarized free-form lens 33 are fixed inside the housing. The LOGO template 34 is detachably installed at the opening of the housing. In this way, the position lamp 3 is equivalent to a projection module, and the bed body 2 is provided with an assembly structure matching the housing of the position lamp 3. Only by installing the position lamp 3 as a whole and the assembly structure can the projection of the predetermined light spot pattern 4 be realized. Through the design of the overall module, the installation is more convenient and fast, and the maintenance is simpler.

[0044] Furthermore, the length of the predetermined light spot pattern 4 is equal to or greater than the size of the column 1. Specifically, the length of the predetermined light spot pattern 4 in the length direction of the bed body 2 and the size of the column 1 are preferably the same, and both ends of the predetermined light spot pattern 4 are respectively aligned with both sides of the column 1. Therefore, both ends thereof represent the positions of both sides of the column 1, and medical staff can avoid colliding with the column 1 as long as they stagger the C-arm ball head from both ends of the predetermined light spot pattern 4. In some embodiments, the length of the predetermined light spot pattern 4 in the length direction of the bed body 2 is greater than the size of the column 1, and both ends of the predetermined light spot pattern 4 respectively extend beyond both sides of the column 1. In this way, medical staff can avoid colliding with the column 1 as long as they stagger the C-arm ball head from both ends of the predetermined light spot pattern 4, and there is a margin to avoid collisions caused by shaking, with better reliability.

[0045] Furthermore, the light-emitting unit 31 uses an LED light source with a divergence angle of 180°. One side of the convex lens 32 close to the LED light source is concave, and the other side is convex. The LED light source is accommodated in the concave space of the convex lens 32. In this way, the light emitted by the LED light source can be converged in the direction of the polarization free-form lens 33, effectively utilizing the energy of the LED light source. In some embodiments, the LED light source can also use other light sources, such as incandescent lamps, fluorescent lamps, etc., and the setting form of the convex lens 32 can also be adjusted adaptively as long as the divergence angle of the light can be converged to 60°-100°, preferably 80°.

[0046] Regarding the shape of the predetermined light spot pattern 4, it is realized by the structures of the convex lens 32 and the polarization free-form lens 33. Taking a rectangle as an example to illustrate the design idea:

[0047] As follows Figure 3a and Figure 3b , since the position of the required light and shadow area (predetermined light spot pattern 4 area) cannot be affected by upper occlusion, the position lamp 3 cannot be directly installed above. Therefore, it is designed to irradiate at a certain angle. The height of the center of the position lamp 3 and the light and shadow area (ground) in the vertical direction is H, and H can be designed adaptively, generally lower than the height of the column 1. The vertical center line of the position lamp 3 forms an angle θ with the central optical axis, and the angle θ can be adjusted adaptively according to the position of the predetermined light spot pattern 4 and the position of the position lamp 3, which is not limited herein. Combining the length and width requirements of the entire uniform light and shadow area, the corresponding optical system scheme is designed.

[0048] The LED lamp has a large light-emitting angle and needs to be designed to reduce the angle, and the required light-emitting angle is not greater than 100°. Exemplarily, such as Figure 5 and Figure 6, by designing a convex lens 32 to narrow the light-emitting angle from the original 180° to 80°, the light source can be better utilized and the waste of large-angle light can be reduced. Due to the height limitation of the operating bed, the position lamp 3 cannot be placed higher than the height of the column 1 and cannot be placed outside the column 1. As follows Figure 4 , so H cannot exceed this height, and L needs to be within half of the width of the column 1. Combining the position, length, and width requirements of the light and shadow area shown in Figure 3 and the geometric relationship in optics: I = E * d^2 (where I is the point light intensity, E is the point illuminance, and d is the illumination distance), and considering the performance requirement of equal illuminance in the entire light and shadow area, the light-emitting angle of the optical lens in the long direction of the light and shadow area can be calculated respectively. Divide this angle into N equal parts, and after micro-differentiation, the light intensity distribution at each angle can be obtained. For example Figure 7 、 8 ; after obtaining the light intensity distribution curve, combined with the selected lens material, such as Figure 9 , the free optical curves S1 and S2 in the corresponding direction can be optimized and combined into a lens structure; in the wide direction of the light and shadow area, a light intensity offset design needs to be achieved. Similarly, based on the geometric model and the relationship I = E * d^2, the light intensity curve can be obtained, such as Figure 10 、 11 , and the polarization free-form surface treatment is performed on the S1 surface. Similarly, combined with the selected material, the lens structure composed of the free curves S1 and S2 can be obtained, such as Figure 13 ; for the surface shape between the long direction and the wide direction of the light and shadow area, N geometric mathematical relationships are also established by segmentation, such as Figure 13 ; combining the S1 and S2 curves generated in different directions can obtain the closed polarization free-form surface lens 33 structure, such as Figure 14 ; after the LED light source projects a uniform illuminance into the required light and shadow area, the projected light and shadow area is a uniform light spot. In order to achieve logo projection, a LOGO template 34 is added to the light path. The size of the LOGO template 34 changes with the height of its placement and needs to be within the triangle formed by the led light source and the required light and shadow area, and form a similar triangle relationship with the triangle formed by the led light source and the LOGO template 34; the light passes through the LOGO template 34 and shines on the ground to obtain a required logo light and shadow area.

[0049] It should be understood that the convex lens 32, the polarization free-form surface lens 33, and the LOGO template 34 can all be adaptively designed according to the required effects and are not limited here.

[0050] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An operating table, characterized in that: It includes a column, a bed installed on the top of the column, and a position light arranged on the column or the bed; the position light includes a light-emitting unit, a convex lens and a polarized free-form surface lens arranged in sequence along the light path direction; the convex lens is used to reduce the light-emitting angle of the light-emitting unit to 60°-100°; the polarized free-form surface lens is used to polarize and shape the light passing through it in the direction away from the column in the width direction of the bed, so as to form a predetermined light spot pattern on the ground below the edge of the bed, and the position of the predetermined light spot pattern corresponds to the column in the length direction of the bed.

2. The operating table according to claim 1, characterized in that: The position light also includes a LOGO template arranged in the light emitting direction of the polarized free-form surface lens, the outer contour shape of the LOGO template is similar to the predetermined light spot pattern, and the LOGO template is provided with a pattern.

3. The operating table according to claim 2, characterized in that: The position light is located on the bottom side of the bed and beside the column, the light emitting unit, the convex lens and the polarized free-form surface lens are located in the bed, and a light outlet is provided on the bottom side of the bed for light passing through the LOGO template.

4. The operating table according to claim 3, characterized in that: The LOGO template can be detachably assembled on the light outlet.

5. The operating table according to claim 3, characterized in that: A position light is respectively arranged on the two long sides of the bed body, and the positions of the two position lights correspond to each other and are respectively located on the long sides of the columns close to the bed body.

6. The operating table according to claim 1, characterized in that: The predetermined light spot pattern includes a rectangle, a square, a waist or a trapezoid.

7. The operating table according to claim 1, characterized in that: In the height direction, the predetermined light spot pattern is located outside the projection of the edge of the bed.

8. The operating table according to claim 7, characterized in that: The length of the predetermined light spot pattern is equal to or greater than the size of the pillar.

9. The operating table according to claim 1, characterized in that: The illumination at each location of the predetermined light spot pattern is uniform.

10. The operating table according to claim 1, characterized in that: The light emitting unit adopts an LED light source with a divergence angle of 180°. The side of the convex lens close to the LED light source is a concave surface, and the other side is a convex surface. The LED light source is accommodated in the concave space of the convex lens.

Images