A probe calibration device

Abstract

The application provides a probe calibration device, and relates to the technical field of probe measurement, which comprises a measuring scale, wherein a scale mark with linearly increasing values is arranged on the measuring scale along a first direction; a probe channel for accommodating a probe to be measured is arranged on the measuring scale, and the probe channel is parallel to the first direction; a clamping mark comprises a sliding part, a blocking part and an indicating part; the sliding part is slidably arranged on the measuring scale, and the sliding direction is parallel to the first direction; the blocking part is fixedly connected with the sliding part, and the blocking part is used for abutting against the end of the probe to be measured; the indicating part is fixedly connected with the sliding part, and the indicating part is used for indicating the scale mark; and a locking mechanism is arranged between the clamping mark and the measuring scale, and is used for locking the relative position of the clamping mark and the measuring scale. The error existing in the probe calibration in the related art is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of probe measurement technology, and more specifically, to a probe calibration device. Background Technology

[0002] In neurosurgery, stereotactic techniques are widely used for the precise placement of implants such as electrodes and optical fibers. This technique typically utilizes stereotactic devices such as robotic arms and Leksell head frames to create a pathway within the brain tissue through drilling into the skull, allowing the implant to accurately reach its target location. In this process, the probe is a crucial tool, and the accuracy of its length and straightness directly affects the safety and effectiveness of the surgery.

[0003] In existing technologies, common stainless steel rulers are used to measure the length of probes. Their advantages include the ability to be repeatedly sterilized and reused without being affected by repeated sterilization; and the availability of the material. However, directly using stainless steel rulers presents the following problems:

[0004] Due to the unique characteristics of brain tissue, surgical errors must be less than 1 millimeter to ensure the accuracy and safety of the surgery. If a stainless steel ruler is used to measure the probe, medical staff need to fix both ends of the probe and the ruler to prevent relative displacement during calibration. However, in actual calibration, it is difficult to control the minute distance, which can easily lead to errors in the probe length calibration. Utility Model Content

[0005] The purpose of this application is to provide a probe calibration device that precisely limits the probe length and ensures that the error in probe calibration in related technologies does not exceed a preset requirement.

[0006] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application.

[0007] According to this application, a probe calibration device is provided, characterized in that it comprises:

[0008] A measuring ruler, wherein the measuring ruler is provided with a scale marking that increases linearly along a first direction, and the measuring ruler is provided with a probe channel for accommodating a probe to be tested, the probe channel being parallel to the first direction;

[0009] The label includes a sliding part, a blocking part, and an indicating part. The sliding part is slidably disposed on the measuring scale and the sliding direction is parallel to a first direction. The blocking part is fixedly connected to the sliding part and is used to abut against the end of the probe to be tested. The indicating part is fixedly connected to the sliding part and is used to indicate the scale marking.

[0010] A locking mechanism is provided between the tag and the measuring ruler to lock the relative positions of the tag and the measuring ruler.

[0011] In one exemplary embodiment of this application, the blocking portion and the indicating portion are coplanar.

[0012] In one exemplary embodiment of this application, the probe channel is configured as a guide groove, which is formed on the surface of the measuring ruler.

[0013] In one exemplary embodiment of this application, the guide groove is provided as two or more, each guide groove having a semi-circular cross-section and a different diameter, so as to adapt to the probes to be tested with different outer diameter specifications.

[0014] In one exemplary embodiment of this application, the number of the blocking parts corresponds to the number of the guide grooves, and each of the blocking parts is located in a corresponding guide groove.

[0015] In one exemplary embodiment of this application, the locking mechanism includes:

[0016] A threaded hole is formed through the tag;

[0017] A locking bolt is threaded into the threaded hole. After the locking bolt is tightened, it extends out of the threaded hole and abuts against the side wall of the measuring ruler.

[0018] In one exemplary embodiment of this application, the tag has a scale line on the side wall facing the probe channel, and the distance between the scale line and the bottom of the guide groove is not less than the diameter of the probe to be tested.

[0019] In an exemplary embodiment of this application, the tag has an arc-shaped marking line on the sidewall facing the probe channel. The arc-shaped marking line and the cross-sectional profile of the guide groove together form a reference circle, and the cross-sectional area of ​​the reference circle is not less than the cross-sectional area of ​​the probe to be tested.

[0020] In one exemplary embodiment of this application, the volume of commonly used numerical values ​​in the scale markings is increased to form visually enhanced markings, and the top of the visually enhanced markings is provided with a directional marking for pointing to the corresponding scale.

[0021] In one exemplary embodiment of this application, a support foot is fixedly provided at the bottom of the back of the measuring ruler, a support rod is fixedly provided at the top of the back of the measuring ruler, and friction pads are fixedly provided at the bottom of the support rod and the support foot.

[0022] The exemplary embodiments of this application may have some or all of the following beneficial effects:

[0023] 1. In the probe calibration device provided in the example embodiment of this application, when calibrating the length of the probe, firstly, the marker is moved so that the indicator part of the marker is moved to the scale mark position of the accurate length of the probe. Then, the marker is fixed by the locking mechanism. Next, the probe to be tested is placed into the probe channel so that one end of the probe to be tested abuts against the blocking part. Then, the positional relationship between the other end of the probe to be tested and the end of the measuring ruler is observed, thereby realizing the length adjustment of the probe to be tested and the precise installation of the limiting structure. With the above-mentioned calibration device, on the one hand, the guide groove can guide the probe to be tested, so that the probe to be tested can maintain the first direction and thus remain parallel to the scale mark, thereby improving the accuracy of the length calibration of the probe to be tested; on the other hand, the blocking part of the marker can prevent the relative sliding between the probe to be tested and the measuring ruler during the calibration process, thereby reducing the error caused by sliding during calibration and further improving the accuracy of the length calibration of the probe to be tested.

[0024] 2. In the probe calibration device provided in the example embodiment of this application, by rotating the probe to be tested in the guide groove, the fit between the probe to be tested and the guide groove can be observed, and it can be determined whether the straightness of the probe to be tested meets the requirements. Furthermore, a scale line is provided on the indicator part of the label. When rotating the probe to be tested, if the straightness of the probe to be tested is below or flush with the scale line, it indicates that the straightness of the probe to be tested meets the requirements; otherwise, it is rejected, thereby realizing the straightening work of the probe to be tested.

[0025] 3. In the probe calibration device provided in the example embodiment of this application, by rotating the probe to be tested in the guide groove, the positional relationship between the probe to be tested and the arc-shaped marking line set on the label can be observed. If the cross section of the probe to be tested is within or flush with the arc-shaped marking line, it indicates that the straightness of the probe to be tested meets the requirements; otherwise, it is rejected, thereby realizing the straightening work of the probe to be tested.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0028] Figure 1 A schematic diagram of a probe calibration device according to Embodiment 1 of this application is shown;

[0029] Figure 2 It shows Figure 1A magnified view of part A in the middle;

[0030] Figure 3 A side cross-sectional view of a probe calibration device according to Embodiment 1 of this application is shown;

[0031] Figure 4 A schematic diagram of a probe calibration device according to Embodiment 2 of this application is shown;

[0032] Figure 5 A side cross-sectional view of a probe calibration device according to Embodiment 2 of this application is shown.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Measuring ruler; 11. Support leg; 12. Support rod; 2. Marker; 21. Sliding part; 22. Blocking part; 23. Indicating part; 3. Locking mechanism; 31. Threaded hole; 32. Locking bolt; 4. Guide groove; 5. Scale line; 6. Arc-shaped marking line; 7. Scale mark; 71. Visual reinforcement mark; 72. Directional mark. Detailed Implementation

[0035] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted. Furthermore, the drawings are merely illustrative of this application and are not necessarily drawn to scale.

[0036] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples in the accompanying drawings. It is understood that if the device of the icon is flipped so that it is upside down, the component described as "upper" will become the component described as "lower." When a structure is "upper" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0037] The terms “a,” “one,” “the,” and “at least one” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first” and “second” are used only as markers and are not a limitation on the number of objects.

[0038] Example 1

[0039] like Figures 1-3 As shown in the embodiments of this application, a probe calibration device includes:

[0040] Measuring ruler 1, wherein the measuring ruler 1 is provided with a scale mark 7 with linearly increasing values ​​along a first direction, and the measuring ruler 1 is provided with a probe channel for accommodating the probe to be tested, the probe channel being parallel to the first direction;

[0041] The label 2 includes a sliding part 21, a blocking part 22, and an indicating part 23. The sliding part 21 is slidably disposed on the measuring ruler 1, and the sliding direction is parallel to the first direction. The blocking part 22 is fixedly connected to the sliding part 21 and is used to abut against the end of the probe to be tested. The indicating part 23 is fixedly connected to the sliding part 21 and is used to indicate the scale mark 7.

[0042] The locking mechanism 3 is disposed between the tag 2 and the measuring ruler 1, and is used to lock the relative position of the tag 2 and the measuring ruler 1.

[0043] Furthermore, the first direction is the length direction of the measuring ruler 1 itself. The measuring ruler 1 is made of various suitable materials, such as aluminum alloy, stainless steel, acrylic, etc., so that it can be repeatedly disinfected during use without affecting its accuracy.

[0044] It should be understood that the probe channel described in the embodiments of this application includes, but is not limited to, the following implementation methods: first, forming an embedded groove structure on the surface of the measuring ruler 1 by mechanical processing; second, a guide rail structure fixedly assembled on the surface of the measuring ruler 1 as an additional component.

[0045] When calibrating the length of the probe under test, the operator first slides the marker 2 along the scale mark 7 to the predetermined position (the standard length of the probe). Then, the probe under test is placed into the probe channel, with one end of the probe abutting against the blocking part 22 of the marker 2. The relative position of the other end of the probe under test and the end of the measuring ruler 1 is observed, thus achieving the calibration of the probe under test. Furthermore, the user can install a limiting structure, such as a limiter, at the end of the measuring ruler 1 to further improve the accuracy of the probe insertion length. During the calibration process, the probe channel guides the probe under test, ensuring that it remains parallel to the scale mark 7, thereby improving the accuracy of the calibration. On the other hand, the blocking part 22 of the marker 2 effectively prevents relative sliding between the probe under test and the measuring ruler 1 during calibration, reducing errors caused by sliding and further improving the accuracy of the probe length calibration.

[0046] In this embodiment, it is preferred that the blocking part 22 is coplanar with the indicating part 23, but this is not limiting. In other embodiments, the blocking part 22 may not be coplanar with the indicating part 23, and the blocking part 22 may be disposed on both sides of the indicating part 23 along the first direction. However, it is worth noting that if the blocking part 22 and the indicating part 23 are not coplanar, when determining the position of the marker 2, the distance between the indicating part 23 and the blocking part 22 should also be taken into account when determining the scale mark 7 aligned with the indicating part 23.

[0047] In this embodiment of the application, the probe channel is preferably configured as an embedded groove structure, namely guide groove 4, which is formed on the surface of the measuring ruler 1.

[0048] Furthermore, the guide groove 4 is configured as two or more, each guide groove 4 having a semi-circular cross-section, and the diameter of each guide groove 4's cross-section is different, so as to adapt to the probes to be tested with different outer diameter specifications.

[0049] In this embodiment of the application, taking two guide grooves 4 as an example, the two guide grooves 4 are parallel to each other, and the diameters of the two guide grooves 4 are 1.8mm and 2.4mm respectively. In other embodiments, the diameter of the guide grooves 4 can also be other sizes, and the number of guide grooves 4 can be one, three, four, or even more.

[0050] In this embodiment, the number of blocking parts 22 corresponds to the number of guide grooves 4. Each blocking part 22 is located in the corresponding guide groove 4. The blocking part 22 and the sliding part 21 are an integral structure. Of course, this is not limiting. In other embodiments, the blocking part 22 and the sliding part 21 can also be separate structures. The blocking part 22 can be connected and fixed to the sliding part 21 by welding, pasting or other means. The blocking part 22 can also be connected to the sliding part 21 in a detachable manner by threaded connection, snap-fit ​​or other means.

[0051] In this embodiment, the locking mechanism 3 includes a threaded hole 31 and a locking bolt 32. The threaded hole 31 is formed through the tag 2, and the locking bolt 32 is threaded into the threaded hole 31. When the user needs to slide the tag 2, he / she only needs to rotate the locking bolt 32 to a loose state. After the tag 2 is moved to a suitable position, the locking bolt 32 is tightened, thereby fixing the tag 2 and providing good stability for the tag 2.

[0052] In this embodiment, the tag 2 has a scale line 5 on its sidewall facing the probe channel. Specifically, the scale line 5 is located on the side of the tag 2 facing the starting point of the scale mark 7. The distance between the scale line 5 and the bottom of the guide groove 4 is not less than the diameter of the probe to be tested. The distance between the scale line 5 and the bottom of the guide groove 4 can be determined based on the diameter of the probe plus the maximum allowable bending amount of the probe. For example, for a guide groove 4 with a diameter of 1.8 mm, the distance between the scale line 5 on the tag 2 and the bottom of the guide groove 4 can be set to 2.2 mm. The user can calibrate the straightness of the probe using scale line 5. The specific operation is as follows: the user places the probe to be tested in the guide groove 4, then rotates the probe within the guide groove 4, observing the fit between the probe and the guide groove 4, and simultaneously observing the positional relationship between the end face of the probe and scale line 5. If the end face of the probe is always below or flush with scale line 5, the straightness of the probe is acceptable; if the end face of the probe extends beyond scale line 5, the probe is unacceptable and therefore discarded. Through the scale line 5 and the above operation method, the straightness of the probe to be tested is calibrated.

[0053] In this embodiment, the volume of commonly used numerical values ​​in the scale markings 7 is increased to form visually enhanced markings 71. As shown in the figure, the volumes of the values ​​"19", "22", "24", and "26" are increased to form visually enhanced markings 71, making it easier for users to read the values ​​when calibrating the probe length. Of course, the numerical values ​​corresponding to the visually enhanced markings 71 are not limiting; in other embodiments, the volumes of other numerical values ​​can also be increased.

[0054] Furthermore, the measuring ruler 1 also has a directional mark 72 on top of the visually enhanced mark 71. The side of the directional mark 72 away from the visually enhanced mark 71 is pointed, and the pointed end of the directional mark 72 points to the scale corresponding to the visually enhanced mark 71. Through the directional mark 72, the user can accurately know the specific scale corresponding to the visually enhanced mark 71, which not only facilitates the user in calibrating the length of the probe, but also improves the accuracy of the probe calibration length.

[0055] In this embodiment of the application, a support foot 11 is fixedly provided at the bottom of the back of the measuring ruler 1, and a support rod 12 is fixedly provided at the top of the back of the measuring ruler 1. During the use of the measuring ruler 1, the support rod 12 and the support foot 11 can stably support the measuring ruler 1 on the table and maintain a certain gap between the back of the measuring ruler 1 and the table, so as to facilitate the movement of the marker 2 and the user to pick up and put down the measuring ruler 1.

[0056] Furthermore, friction pads are fixed to the bottom of the support rod 12 and the support leg 11. When using the calibration device, the friction pads increase the friction between the device and the tabletop, making it less prone to slipping during use. This improves the stability of the calibration device during use and also enhances the accuracy of probe calibration.

[0057] Example 2

[0058] like Figure 4 and Figure 5 As shown in the embodiment of this application, another probe calibration device is provided. This probe calibration device differs from Embodiment 1 in that an arc-shaped marking line 6 is engraved on the side wall of the blocking part 22. The arc-shaped marking line 6 and the cross-sectional contour of the guide groove 4 together form a reference circle, and the cross-sectional area of ​​the reference circle is not less than the cross-sectional area of ​​the probe to be tested. That is, the diameter of the formed reference circle is larger than the diameter of the probe cross-section. Therefore, when calibrating the straightness of the probe, the probe is placed in the probe channel and rotated. When the cross-section of the probe covers the arc-shaped marking line 6, it indicates that the straightness of the probe is unqualified. If the cross-section of the probe remains within the arc-shaped reference circle during rotation, it indicates that the straightness of the probe is qualified.

[0059] Other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the embodiments thereof. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not claimed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A probe calibration device, characterized in that, include: A measuring ruler, wherein the measuring ruler is provided with a scale marking that increases linearly along a first direction, and the measuring ruler is provided with a probe channel for accommodating a probe to be tested, the probe channel being parallel to the first direction; The label includes a sliding part, a blocking part, and an indicating part. The sliding part is slidably disposed on the measuring scale and the sliding direction is parallel to a first direction. The blocking part is fixedly connected to the sliding part and is used to abut against the end of the probe to be tested. The indicating part is fixedly connected to the sliding part and is used to indicate the scale marking. A locking mechanism is provided between the tag and the measuring ruler to lock the relative positions of the tag and the measuring ruler.

2. The probe calibration device according to claim 1, characterized in that, The blocking part and the indicating part are coplanar.

3. The probe calibration device according to claim 1, characterized in that, The probe channel is configured as a guide groove, which is formed on the surface of the measuring ruler.

4. The probe calibration device according to claim 3, characterized in that, The guide groove is configured as two or more, each guide groove having a semi-circular cross-section and a different diameter, in order to adapt to the probes to be tested with different outer diameter specifications.

5. A probe calibration device according to claim 4, characterized in that, The number of the blocking parts corresponds to the number of the guide grooves, and each of the blocking parts is located in the corresponding guide groove.

6. The probe calibration device according to claim 1, characterized in that, The locking mechanism includes: A threaded hole is formed through the tag; A locking bolt is threaded into the threaded hole. After the locking bolt is tightened, it extends out of the threaded hole and abuts against the side wall of the measuring ruler.

7. A probe calibration device according to claim 3, characterized in that, The side wall of the blocking part is provided with scale lines, and the distance between the scale lines and the bottom of the guide groove is not less than the diameter of the probe to be tested.

8. A probe calibration device according to claim 3, characterized in that, An arc-shaped marking line is provided on the side wall of the blocking part. The arc-shaped marking line and the cross-sectional contour of the guide groove together form a reference circle. The cross-sectional area of ​​the reference circle is not less than the cross-sectional area of ​​the probe to be tested.

9. A probe calibration device according to claim 1, characterized in that, The volume of commonly used numerical values ​​in the scale markings is increased to form visually enhanced markings, and a directional marking is provided on the top of the visually enhanced markings to point to the corresponding scale markings.

10. A probe calibration device according to claim 1, characterized in that, The bottom of the back of the measuring ruler is fixed with a support foot, the top of the back of the measuring ruler is fixed with a support rod, and the bottom of the support rod and the support foot is fixed with a friction pad.

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