A guide precision measuring device for a laser puncture guide system

Abstract

This utility model discloses a guiding accuracy measuring device for a laser puncture guidance system, including a device base and a motion platform located above the device base. The motion platform provides linear movement along the X and Y axes, and the device base provides linear movement along the Z axis and horizontal rotation around the Z axis. The motion mechanisms of the X, Y, and Z axes are each independently equipped with a motion distance indicator for displaying the displacement of each axis. A measuring platform for placing a standard membrane is set above the X-axis motion mechanism of the motion platform, and a target point receiver is fixed on the measuring platform. By positioning the standard membrane on the measuring platform and aligning it with the center of the target point receiver, the target point receiver is driven to move, allowing it to receive the coordinate position of the indicating laser. This coordinate position provides a basis for calculating the accuracy and repeatability of the puncture point and puncture path in subsequent laser indication, improving the safety and precision of the puncture surgery and reducing surgical risks.

Description

Technical Field

[0001] This utility model relates to the field of laser puncture guidance system technology, and specifically to a guidance accuracy measuring device for a laser puncture guidance system. Background Technology

[0002] The laser puncture guidance system plans the puncture path directly using DICOM digital images generated by CT scans. The doctor determines the target lesion in the patient's body and the planned puncture surgical path. The laser puncture guidance system automatically generates running coordinates and controls the moving parts to move the laser beam to the predetermined position. The laser projects a cross laser point on the patient's body surface. The doctor guides the puncture along the laser positioning point and the laser spatial projection path, realizing the positioning and guidance of puncture for minimally invasive surgical treatment.

[0003] To ensure the safety and precision of puncture surgery, the accuracy and repeatability of the laser-guided puncture system in indicating the puncture point and path are crucial. However, the puncture path and point of the laser-guided puncture system are indicated by a laser line. Since laser is not a physical object, the accuracy of the laser-guided path and point is difficult to measure, resulting in low precision during puncture surgery and posing significant safety risks.

[0004] Currently, there are no laser puncture guidance systems on the market that measure the accuracy and repeatability of the puncture path and puncture point indicated by the laser.

[0005] Therefore, this application is submitted. Utility Model Content

[0006] The purpose of this invention is to provide a guiding accuracy measuring device for a laser puncture guidance system. The device places a standard membrane on the measuring platform and aligns it with the center of the target point receiver. It drives the target point receiver to move so that it receives the coordinate position of the indicating laser. This coordinate position is then used to calculate the accuracy and repeatability of the puncture point and puncture path for subsequent laser indication, thereby improving the safety and precision of puncture surgery and reducing surgical risks.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0008] A guiding accuracy measuring device for a laser puncture guidance system includes a device base and a motion platform located above the device base. The motion platform provides linear movement along the X-axis and Y-axis, and the device base provides linear movement along the Z-axis and horizontal rotation around the Z-axis. The motion mechanisms of the X-axis, Y-axis, and Z-axis are each independently equipped with a motion distance indicator for displaying the displacement of each axis. A measuring platform for placing a standard membrane is provided above the X-axis motion mechanism of the motion platform. A target point receiver is fixed on the measuring platform. The receiving surface of the target point receiver is hemispherical and is designed to coincide with the center of the standard membrane to receive laser indication points emitted from the laser puncture guidance system.

[0009] Furthermore, the coordinates of the laser pointer point can be obtained through three motion distance indicators.

[0010] Furthermore, the Z-axis motion mechanism is located between the device base and the motion platform, and a rotating base that is fixed to the surface of the device base and rotates horizontally is provided at the bottom of the Z-axis motion mechanism.

[0011] Furthermore, the Z-axis motion mechanism is an electric lifting rod.

[0012] Furthermore, linear X-axis motion mechanism and Y-axis motion mechanism are respectively arranged on both sides of the motion platform, with the Y-axis motion mechanism located above the X-axis motion mechanism and the two moving directions being perpendicular to each other.

[0013] Furthermore, the X-axis motion mechanism includes a guide rail located on both sides of the motion platform, and a slide block fixedly connected to the X-axis moving plate is slidably connected to the guide rail.

[0014] Furthermore, the bottom of the X-axis movable plate has slots that connect to the slides on both sides respectively.

[0015] Furthermore, guide rails two perpendicular to guide rail one are provided on both sides of the X-direction moving plate. Slide blocks two fixed to the Y-direction moving plate are slidably connected to guide rail two. The two slide blocks two are respectively connected to the bottom end of the Y-direction moving plate.

[0016] Furthermore, both guide rail one and guide rail two are controlled by servo motors.

[0017] Furthermore, the horizontal surface of the X-axis moving plate is higher than the motion platform, and a level indicator is provided at the center of the motion platform. The bottom surface of the device base is provided with at least one level adjuster for leveling.

[0018] The beneficial effects of this utility model are:

[0019] This invention, by setting a motion platform, an X-axis motion mechanism, a Y-axis motion mechanism, and a Z-axis motion mechanism above the device base, moves the target point receiver on the measurement platform to obtain the coordinate position of the laser pointing point. The coordinate value of this position is used for subsequent accuracy and repeatability measurements of the laser pointing puncture point (position) and laser pointing puncture path (posture). The accuracy and repeatability data are analyzed to determine whether they meet the puncture requirements, providing support for the specific implementation of the laser pointing puncture point and puncture path, and reducing the risk of surgical puncture. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the measuring device of the present invention;

[0021] Figure 2 This is a front view of the measuring device of the present invention;

[0022] Figure 3 This is a side view of the measuring device of the present invention.

[0023] Reference numerals: 1-Device base, 10-Level adjuster, 11-Rotating base, 2-Measuring platform, 3-Motion platform, 4-X-axis motion mechanism, 40-Guide rail one, 41-Slide one, 42-X-direction moving plate, 5-Y-axis motion mechanism, 50-Guide rail two, 51-Slide two, 52-Y-direction moving plate, 6-Z-axis motion mechanism, 7-Target point receiver, 8-Motion distance indicator, 9-Level indicator, 100-Laser emitter, 101-Laser indicator path, 102-Motion track, 200-Standard membrane. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0025] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0027] An embodiment of this utility model is a guiding accuracy measuring device for a laser puncture guidance system, including a device base 1 and a motion platform 3 located above the device base 1. The motion platform 3 provides linear movement along the X-axis and Y-axis, and the device base 1 provides linear movement along the Z-axis and horizontal rotation around the Z-axis. The motion mechanisms of the X-axis, Y-axis, and Z-axis are each independently equipped with a motion distance indicator 8 for displaying the displacement of each axis. A measuring platform 2 for placing a standard membrane 200 is set above the X-axis motion mechanism 4 of the motion platform 3. A target point receiver 7 is fixed on the measuring platform 2. The receiving surface of the target point receiver 7 is hemispherical and is used to coincide with the center of the standard membrane 200 to receive the laser indication point emitted from the laser puncture guidance system.

[0028] The function of the standard membrane 200 here is to align the three-dimensional coordinates of the laser puncture guidance system's guidance accuracy measuring device with those of the laser puncture guidance system under test, and to perform registration between the two. Therefore, the isocenter position of the standard membrane 200 and the target point receiver 7 are required. The CT scan image of the standard membrane 200 is imported into the laser puncture guidance system. Then, based on the CT scan image, the laser puncture guidance system controls the guide laser line to be directed toward the isocenter point of the standard membrane 200. This isocenter point matches the target point receiver 7 on the measuring device of this invention, and the registration detection device and the base coordinates of the device under test can be performed before testing.

[0029] Reference Figure 1 , 2 3. The guiding accuracy measuring device of the present invention mainly provides a measuring function for measuring the accuracy and repeatability of the puncture point and puncture path of the laser pointing path 101. After the target point receiver 7 receives the position coordinates of the puncture point and puncture path of the laser pointing path 101, it is used to calculate the corresponding accuracy value and repeatability value for analysis, and to determine whether the puncture point and puncture path of the actual laser pointing path 101 meet the puncture requirements.

[0030] This device primarily utilizes the linear movement along the X and Y axes provided by the motion platform 3, and the linear movement along the Z axis and horizontal rotation around the Z axis provided by the device base 1. This allows the target point receiver 7, positioned above the measuring platform 2, to move along the X, Y, and Z axes for alignment and registration. Alternatively, it can move the target point receiver 7 to any two positions A and B within the laser puncture guidance system to receive the indicator laser. Once the position of the target point receiver 7 is determined, the coordinate position after movement can be determined based on the value displayed on the movement distance indicator 8. Based on this coordinate position, the accuracy and repeatability of the puncture point and puncture path of the laser indication path 101 can be analyzed.

[0031] The target point receiver 7 can be one of a photosensitive sensor, photosensitive film, or a visual target with scale markings; the motion distance indicator 8 can be one of a grating ruler, a photoelectric encoder, or a magnetic grating ruler; its installation and components are all existing technologies and can be selected according to actual needs, and will not be described in detail here.

[0032] In some preferred embodiments, the coordinate position of the laser pointing point can be obtained by three motion distance indicators 8. The Z-axis motion mechanism 6 is located between the device base 1 and the motion platform 3, and a rotating base 11 that is fixed to the surface of the device base 1 and rotates horizontally is provided at the bottom of the Z-axis motion mechanism 6.

[0033] The coordinates here can be the coordinates of the puncture point, or the coordinates of the target point receiver 7 receiving the indicator laser at any two positions A and B on the laser indicator line, i.e., the coordinates of points A and B.

[0034] Meanwhile, the rotating base 11 can be driven by a rotary motor at the bottom of the device base 1, thereby causing the motion platform 3 and the measuring platform 2 to rotate horizontally. This is existing technology and will not be described in detail here.

[0035] Furthermore, the Z-axis motion mechanism 6 is an electrically operated lifting rod. The height adjustment of the entire motion platform 3 and the measuring platform 2 is controlled by an external power source, thereby enabling movement along the Z-axis.

[0036] In some preferred embodiments, in order to move the measuring platform 2 and the target point receiver 7, linear X-axis motion mechanism 4 and Y-axis motion mechanism 5 are respectively provided on both sides of the motion platform 3. The Y-axis motion mechanism 5 is located above the X-axis motion mechanism 4 and the movement directions of the two are perpendicular to each other.

[0037] Movement along the X-axis is mainly achieved through the X-axis motion mechanism 4, and movement along the Y-axis is mainly achieved through the Y-axis motion mechanism 5. The X-axis motion mechanism 4 includes guide rails 40 located on both sides of the motion platform 3. A slide block 41, fixedly connected to the X-axis moving plate 42, is slidably connected to the guide rails 40. Guide rails 50, perpendicular to the guide rails 40, are arranged on both sides of the X-axis moving plate 42. A slide block 51, fixedly connected to the Y-axis moving plate 52, is slidably connected to the guide rails 50. Both slide blocks 51 are connected to the bottom end of the Y-axis moving plate 52. Both guide rails 40 and 50 are controlled by servo motors.

[0038] The X-axis motion mechanism 4 and the Y-axis motion mechanism 5 mainly achieve linear movement of the X-axis moving plate 42 and the Y-axis moving plate 52 through the cooperation of their respective guide rails and slides with servo motors. During the movement, servo motors are provided in each axis to drive the slides to move on the guide rails.

[0039] In some preferred embodiments, the bottom of the X-axis moving plate 42 has slots that connect to the slides 41 on both sides. The slots on the bottom of the X-axis moving plate 42 allow for connection to the slides 41 at both ends, providing a clearance effect. They also facilitate the installation of the level indicator 9 on the motion platform 3, preventing the X-axis moving plate 42 from affecting the level indicator 9 during movement. The level indicator 9 and level adjuster 10 are used for overall level adjustment of the device, ensuring that the motion platform 3 and the measuring platform 2 are level, improving the positional accuracy of the measuring platform 2 during movement, and reducing subsequent calculation errors.

[0040] The horizontal surface of the X-axis moving plate 42 is higher than that of the motion platform 3, and a horizontal indicator 9 is provided at the center of the motion platform 3. The bottom surface of the device base 1 is provided with at least one horizontal adjuster 10 for leveling.

[0041] The working principle of this invention is as follows: During use, the standard membrane 200 is placed on the measuring platform 2, which coincides with the target point receiver 7. After aligning the standard membrane 200 with the laser puncture guidance system to be tested, each movement distance indicator 8 is zeroed, and the current coordinate point is defined as the origin. The standard membrane 200 is then removed, and a puncture path pointing to the center point of the standard membrane 200 is arbitrarily selected through the laser puncture guidance system for laser guidance. The center point of the standard membrane 200 is also the center point of the target point receiver 7. Ultimately, the laser pointer illuminates the target point receiver 7, and the three movement distance indicators 8 obtain the coordinate position of the laser pointer point. This coordinate value is used for subsequent accuracy and repeatability measurements of the laser-indicated puncture point (position) and laser-indicated puncture path (posture). The accuracy and repeatability data are analyzed to determine if they meet the puncture requirements, providing support for the specific implementation of the puncture point and puncture path of the laser-indicated path 101 and reducing surgical puncture risks.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A device for measuring the guidance accuracy of a laser puncture guidance system, characterized in that, The device includes a base (1) and a motion platform (3) located above the base (1). The motion platform (3) provides linear movement along the X-axis and Y-axis, and the base (1) provides linear movement along the Z-axis and horizontal rotation around the Z-axis. The motion mechanisms of the X-axis, Y-axis and Z-axis are each independently equipped with a motion distance indicator (8) for displaying the displacement of each axis. A measurement platform (2) for placing a standard membrane (200) is set above the X-axis motion mechanism (4) of the motion platform (3). A target point receiver (7) is fixed on the measurement platform (2). The receiving surface of the target point receiver (7) is hemispherical and is used to coincide with the center of the standard membrane (200) to receive the laser indication point emitted from the laser puncture guidance system.

2. The guiding accuracy measuring device for a laser puncture guidance system according to claim 1, characterized in that, The coordinates of the laser pointer point can be obtained through three motion distance indicators (8).

3. The guiding accuracy measuring device for a laser puncture guidance system according to claim 1, characterized in that, The Z-axis motion mechanism (6) is located between the device base (1) and the motion platform (3), and a rotating base (11) is provided at the bottom of the Z-axis motion mechanism (6) that is fixed to the surface of the device base (1) and rotates horizontally.

4. The guiding accuracy measuring device for a laser puncture guidance system according to claim 3, characterized in that, The Z-axis motion mechanism (6) is an electric lifting rod.

5. The guiding accuracy measuring device for a laser puncture guidance system according to claim 3, characterized in that, The motion platform (3) is provided with linear X-axis motion mechanism (4) and Y-axis motion mechanism (5) on both sides respectively. The Y-axis motion mechanism (5) is located above the X-axis motion mechanism (4) and the two motion directions are perpendicular to each other.

6. The guiding accuracy measuring device for a laser puncture guidance system according to claim 5, characterized in that, The X-axis motion mechanism (4) includes a guide rail (40) located on both sides of the motion platform (3), and a slide block (41) fixedly connected to the X-axis moving plate (42) is slidably connected to the guide rail (40).

7. The guiding accuracy measuring device for a laser puncture guidance system according to claim 6, characterized in that, The bottom of the X-axis moving plate (42) has a slot and is connected to the slides (41) on both sides respectively.

8. A guiding accuracy measuring device for a laser puncture guidance system according to claim 6, characterized in that, The X-axis moving plate (42) has two guide rails (50) perpendicular to the guide rail one (40) on both sides. The guide rail two (50) is slidably connected to the slide seat two (51) which is fixed to the Y-axis moving plate (52). The two slide seats two (51) are respectively connected to the bottom end of the Y-axis moving plate (52).

9. A guiding accuracy measuring device for a laser puncture guidance system according to claim 6, characterized in that, Both guide rail one (40) and guide rail two (50) are controlled by servo motors.

10. A guiding accuracy measuring device for a laser puncture guidance system according to claim 6, characterized in that, The horizontal surface of the X-direction moving plate (42) is higher than that of the motion platform (3), and a horizontal indicator (9) is provided at the center of the motion platform (3). The bottom surface of the device base (1) is provided with at least one horizontal adjuster (10) for leveling.

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