Force sensor for ultrasonic scanning instrument and fitting method thereof
By designing a force sensor for ultrasonic scanners, the problem of the lack of force sensing components in ultrasonic scanning equipment was solved, enabling accurate detection of the force applied to the probe and improving the performance and detection accuracy of the equipment.
Patent Information
- Application Number
- CN202510809906.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-17
- Publication Date
- 2025-10-17
AI Technical Summary
Existing thyroid and carotid ultrasound scanning equipment lacks suitable ultrasound scanning force sensing components, which affects the performance of the equipment.
A force sensor for an ultrasonic scanner was designed, including a sensing element, a fixing element, a light-shielding element, a photoelectric sensor, and a circuit board. External force is detected by the deformation of the deformation element, and the force on the probe is accurately detected by the cooperation of multiple elastic elements and the photoelectric sensor.
The detection accuracy and integration of force sensors are improved, the cost is reduced, and the performance of ultrasonic scanners is enhanced.
Smart Images
Figure CN120800614A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of medical equipment, in particular to a force sensor for an ultrasonic scanner and a fitting method thereof. BACKGROUND
[0002] As a non-invasive medical examination method, thyroid carotid ultrasound scanning is mainly used to assess the condition of the thyroid and the main artery, i.e., the carotid artery. The thyroid mainly regulates metabolism, growth and development, cardiovascular and nervous system function through hormone secretion, and maintains body energy balance and normal physiological activities. The carotid artery, as the main blood vessel supplying the head and brain, its health degree is closely related to the risk of stroke and other vascular diseases. In the traditional ultrasonic scanning process, the doctor needs to use an ultrasonic probe (ultrasonic transducer) to scan the neck, observe the internal structure of the thyroid and the flow of blood in the carotid artery through ultrasonic imaging technology, and detect whether there are thyroid nodules, plaque formation or vascular stenosis, etc. The existing thyroid carotid ultrasound scanning equipment lacks a force sensing component suitable for ultrasonic scanning, which affects the performance of the thyroid carotid ultrasound scanning equipment. SUMMARY
[0003] The present application provides a force sensor for an ultrasonic scanner to solve the problem that the existing thyroid carotid ultrasound scanning equipment lacks a force sensing component suitable for ultrasonic scanning, which affects the performance of the thyroid carotid ultrasound scanning equipment.
[0004] The present application provides a force sensor for an ultrasonic scanner, comprising: a sensing element, the sensing element comprising: a deformation element, the deformation element being connected with the clamping device, the deformation element being annular, the deformation element being used for deforming when the probe on the clamping device is subjected to an external force; a fixing element, the fixing element being arranged in the deformation element, the fixing element being connected with the inner wall of the deformation element through a plurality of elastic elements; a plurality of light shielding elements, the plurality of light shielding elements being arranged at one side of the deformation element in intervals; a fixing assembly, the fixing assembly being arranged at one side of the deformation element, the fixing assembly being connected with the fixing element, the fixing assembly being provided with a plurality of photoelectric sensors, the positions of the plurality of photoelectric sensors corresponding to the positions of the plurality of light shielding elements one by one, the photoelectric sensor being used for detecting the displacement amount of the corresponding light shielding element when the deformation element deforms, and outputting a displacement electric signal; a circuit board, the circuit board being electrically connected with the plurality of light shielding elements, the circuit board being used for acquiring the displacement electric signal and calculating the external force received by the probe.
[0005] The elastic piece is in an arc sheet structure, a plurality of the elastic pieces are arranged around the outer periphery of the fixed element, one end of the elastic piece is connected with the fixed element, and the other end of the elastic piece is connected with the inner wall of the deformation element.
[0006] The fixed element is integrally formed with the elastic piece and the deformation element.
[0007] The outer peripheral surface of the fixed element is provided with a plurality of first connecting blocks at intervals, the inner wall of the deformation element is provided with a plurality of second connecting blocks at intervals, one end of the elastic piece is connected with the first connecting block, and the other end of the elastic piece is connected with the second connecting block.
[0008] In the adjacent two elastic pieces, one end of one elastic element partially overlaps the other end of another elastic element in the radial direction; when the deformation amount of the deformation element is greater than a preset value, the overlapping parts of the adjacent two elastic pieces in the radial direction abut against the first connecting block and / or the second connecting block.
[0009] The plurality of light shielding elements are arranged at intervals in the circumferential direction, and the distance between the adjacent two light shielding elements is equal.
[0010] The fixed assembly comprises: An intermediate shell, one side of the intermediate shell being detachably connected with the fixed element; A bottom shell, the bottom shell being connected with the other side of the intermediate shell.
[0011] The one side of the intermediate shell is provided with a plurality of mounting grooves, and the plurality of photoelectric sensors are one-to-one correspondingly arranged in the plurality of mounting grooves, and the plurality of light shielding elements are one-to-one correspondingly inserted in the plurality of mounting grooves.
[0012] The circuit board is clamped between the bottom shell and the intermediate shell.
[0013] The present application also provides a fitting method for the force sensor for the ultrasonic scanner, the fitting method being based on any one of the force sensors for the ultrasonic scanner, and comprising: The force sensor connecting piece is connected with the deformation element, and the fixed seat is connected with the bottom shell. An external force is applied on the force applying element to make the deformation element driven by the force sensor connecting element to deform; A standard force sensor and the output value of the force sensor are obtained, and the standard force sensor and the output value of the force sensor are fitted by using the following formula (1); (1) Wherein, F represents the output value of the standard force sensor, f represents the output value of the force sensor, represents the transpose of the output value vector of the force sensor, C represents a constant term parameter, L represents a linear term parameter, and Q represents a quadratic term parameter.
[0014] The force sensor for an ultrasonic scanner provided by the application can realize force detection on the probe when the probe on the clamping device is subjected to an external force. The deformation element deforms, the photoelectric sensor detects the displacement of the corresponding light shielding element, and outputs a displacement electric signal. The circuit board obtains the displacement electric signal and calculates the size of the external force on the probe, thereby realizing force detection on the probe. The fixed element and the deformation element are connected by multiple elastic members, and multiple photoelectric sensors are matched with multiple light shielding elements, so that force detection on the probe in multiple directions can be realized, the detection accuracy and integration of the force sensor are improved, the cost of the force sensor is reduced, and the performance of the ultrasonic scanner is enhanced. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.
[0016] Figure 1 is a structural schematic view of the force sensor for an ultrasonic scanner provided by the application.
[0017] Figure 2 is a top view structural schematic view of the sensing element provided by the application.
[0018] Figure 3 is a three-dimensional structural schematic view of the sensing element provided by the application.
[0019] Figure 4 is a structural schematic view of the intermediate shell provided by the application.
[0020] Figure 5 is a structural schematic view of the bottom shell provided by the application.
[0021] Figure 6is a schematic diagram of a principle of fitting of a force sensor for an ultrasonic scanner provided by the present application.
[0022] Reference signs: 110, inductive element; 111, deformation element; 112, fixed element; 113, light shielding element; 114, elastic member; 115, first connecting block; 116, second connecting block; 120, intermediate housing; 121, mounting groove; 130, circuit board; 140, bottom housing; 141, second support portion; 150, force application element; 160, standard force sensor; 170, force sensor connecting member; 190, fixing seat. DETAILED DESCRIPTION
[0023] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described below in connection with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0024] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms “center”, “longitudinal”, “transverse”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms “first”, “second”, “third” are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0025] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “connected” and “connected” should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0026] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.
[0027] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.
[0028] The specific structure of the force sensor for the ultrasonic scanner provided by the present application is described below. Figures 1-4 The specific structure of the force sensor for the ultrasonic scanner provided by the present application is described below.
[0029] Figure 1 The structure diagram of the force sensor for the ultrasonic scanner provided by the present application is illustrated, Figure 2 The top view structure diagram of the sensing element provided by the present application is illustrated, such as Figure 1 and Figure 2As shown, the force sensor for the ultrasonic scanner comprises a sensing element 110, a fixing assembly and a circuit board 130, the sensing element 110 comprises a deformation element 111, a fixing element 112 and a plurality of light shielding elements 113, the deformation element 111 is connected with the clamping device, the deformation element 111 is annular, and the deformation element 111 is used for deforming when the probe on the clamping device is subjected to external force. The fixing element 112 is arranged in the deformation element 111, and the fixing element 112 is connected with the inner wall of the deformation element 111 through a plurality of elastic elements 114. The plurality of light shielding elements 113 are arranged on one side of the deformation element 111 in a circumferential direction, the fixing assembly is arranged on one side of the deformation element 111, the fixing assembly is connected with the fixing element 112, the fixing assembly is provided with a plurality of photoelectric sensors, the positions of the plurality of photoelectric sensors correspond to the positions of the plurality of light shielding elements 113 one by one, the photoelectric sensor is used for detecting the displacement of the corresponding light shielding element 113 when the deformation element 111 deforms, and outputting a displacement electric signal. The circuit board 130 is electrically connected with the plurality of light shielding elements 113, and the circuit board 130 is used for acquiring the displacement electric signal and calculating the external force received by the probe.
[0030] The force sensor for the ultrasonic scanner provided by the application can realize force detection of the probe, the fixing element 112 and the deformation element 111 are connected through a plurality of elastic elements 114, and the plurality of photoelectric sensors and the plurality of light shielding elements 113 are matched, so that force detection of the probe in multiple directions can be realized, the detection accuracy of the force sensor is improved, and the performance of the ultrasonic scanner is enhanced.
[0031] In an embodiment of the application, as shown in Figure 2 The deformation element 111 is annular, and the fixing element 112 is circular block structure, and the central axis of the fixing element 112 is coaxial with the central axis of the deformation element 111. The deformation element 111 is provided with a plurality of screw holes, and the plurality of screw holes are arranged at equal intervals in a circumferential direction, and the screw holes can facilitate the connection of the deformation element 111 and the clamping device. Of course, the connection mode of the deformation element 111 and the clamping device is not limited to this, and clamping cooperation or other connection modes can also be adopted.
[0032] In an embodiment of the application, Figure 3 The three-dimensional structure schematic diagram of the sensing element provided by the application is shown in the drawings, Figure 2 and Figure 3As shown, the elastic member 114 is in an arc-shaped sheet structure, and extends along the circumference of the fixed element 112. The length, width and thickness of each elastic member 114 are equal, so that the deformation amount of each elastic member 114 is the same under the same external force, thereby improving the stability and reliability of the force sensor. The plurality of elastic members 114 are arranged around the outer periphery of the fixed element 112, one end of the elastic member 114 is connected with the fixed element 112, and the other end of the elastic member 114 is connected with the inner wall of the deformation element 111. This structure design can effectively uniformly transmit the external force to the fixed element 112, avoid local stress concentration, and prolong the service life of the sensor. In the embodiment, four elastic members 114 are arranged, which are uniformly arranged along the circumference, so that the force detection of the probe in multiple directions can be realized, the detection accuracy of the force sensor is improved, and the performance of the ultrasonic scanner is enhanced. Of course, the number of elastic members 114 is not limited to this, and can be determined according to actual needs, and can be flexibly adjusted to meet different application scenarios and needs.
[0033] Further, the fixed element 112 is integrally formed with the elastic member 114 and the deformation element 111, so that it can be produced by machining or 3D printing, thereby reducing the production cost. The integrated design not only improves the production efficiency, but also ensures the connection strength and precision between the components, and reduces the performance degradation problem caused by errors and looseness in the assembly process.
[0034] In an embodiment of the present application, as shown in Figure 2 The outer periphery of the fixed element 112 is provided with a plurality of first connecting blocks 115, which are equidistantly arranged along the circumference. The first connecting block 115 is integrally formed with the fixed element 112. In the embodiment, four first connecting blocks 115 are arranged, and the number of first connecting blocks 115 is not limited to this, and can be determined according to the number of elastic members 114.
[0035] The inner wall of the deformation element 111 is provided with a plurality of second connecting blocks 116, which are equidistantly arranged along the circumference. The second connecting block 116 is integrally formed with the deformation element 111. In the embodiment, four second connecting blocks 116 are arranged, and the number of second connecting blocks 116 is not limited to this, and can be determined according to the number of elastic members 114.
[0036] One end of the elastic member 114 is connected with the first connecting block 115, and the other end of the elastic member 114 is connected with the second connecting block 116. By using this connection mode, not only the elastic connection between the fixing element 112 and the deformation element 111 is realized, but also the uniform distribution of the first connecting block 115 and the second connecting block 116 makes each elastic member 114 work coordinately when subjected to force, and bear the external force together, thereby effectively improving the bearing capacity and response speed of the sensor, and enhancing the stability and durability of the sensor in a complex stress environment.
[0037] In an embodiment of the present application, as shown in Figure 2 In the adjacent two elastic members 114, one end of one elastic element partially overlaps the other end of another elastic element in the radial direction; specifically, as shown in Figure 2 In the adjacent two elastic members 114, along the radial direction, the right end of one elastic member 114 is located outside the left end of another elastic member 114, and the right end of one elastic member 114 partially overlaps the left end of another elastic member 114 in the radial direction.
[0038] When the deformation amount of the deformation element 111 is greater than the preset value, the overlapping part of the adjacent two elastic members 114 in the radial direction abuts against the first connecting block 115 and / or the second connecting block 116, at this time, due to the support of the first connecting block 115 and / or the second connecting block 116, the further deformation of the deformation element 111 can be prevented, and the damage of the deformation element 111 caused by excessive deformation can be prevented. By using the overlapping design, the following effects are achieved: when the external force is too large, the abutment of the overlapping part and the connecting block can prevent the elastic member 114 from excessive deformation, thereby playing a role of overload protection, and avoiding the damage of the force sensor caused by the excessive external force. By limiting the maximum deformation of the elastic member 114, it is ensured that the deformation of the elastic member 114 and the external force are in a linear relationship within the normal working range, and the measurement accuracy of the force sensor is improved. The overlapping design of the adjacent elastic members 114 makes the structure of the entire sensing element 110 more compact, reduces the volume of the force sensor, and facilitates the installation and use in a limited space.
[0039] In an embodiment of the present application, as shown in Figure 3As shown, the light shielding elements 113 are provided in six, and the six light shielding elements 113 are arranged at equal intervals in the circumferential direction. By uniformly distributing the light shielding elements 113 in the circumferential direction, comprehensive detection of deformation of the deformation element 111 at multiple positions can be achieved. This uniform distribution ensures that deformation at each position can be accurately detected when the deformation element 111 deforms, thereby improving the detection accuracy of the force sensor. In addition, the uniform distribution of the six light shielding elements 113 has the following beneficial effects: on the one hand, multiple light shielding elements 113 can detect deformation at different positions, thereby more comprehensively reflecting the force on the probe and achieving accurate measurement of the size and direction of the force, thereby improving the accuracy of the detection. On the other hand, the uniformly distributed light shielding elements 113 can reduce detection errors caused by local deformation, enhance the reliability and stability of the sensor, and ensure stable performance under various complex working conditions.
[0040] In an embodiment of the present application, Figure 4 An example of the structure of the intermediate shell provided by the present application is shown in the structural schematic diagram, Figure 5 An example of the structure of the bottom shell provided by the present application is shown in the structural schematic diagram, Figure 4 and Figure 5 As shown, the fixing assembly includes an intermediate shell 120 and a bottom shell 140, and one side of the intermediate shell 120 is detachably connected with the fixing element 112. Specifically, the fixing element 112 and the intermediate shell 120 are provided with screw holes in the middle region of one side, and the fixing element 112 and the intermediate shell 120 are connected by screws in the screw holes. The fixing element 112 and the intermediate shell 120 are connected by a detachable connection method, which facilitates installation and maintenance, and facilitates quick disassembly for inspection or replacement when needed, thereby improving the maintainability of the equipment. In addition, the detachable connection of the intermediate shell 120 and the fixing element 112 allows the internal photoelectric sensor and the light shielding element 113 to be easily separated for calibration and adjustment, thereby ensuring the measurement accuracy of the sensor.
[0041] The bottom shell 140 is connected to the other side of the intermediate shell 120. Specifically, the bottom shell 140 and the other side of the intermediate shell 120 are provided with screw holes, and the bottom shell 140 and the intermediate shell 120 are connected by screws in the screw holes. The bottom shell 140 and the intermediate shell 120 are connected by a detachable connection method, which facilitates installation and maintenance, and facilitates quick disassembly for inspection or replacement when needed, thereby improving the maintainability of the equipment. In addition, the detachable connection of the bottom shell 140 and the intermediate shell 120 makes it more convenient to install and replace the circuit board 130.
[0042] In an embodiment of the present application, as Figure 4As shown, one side of the intermediate shell 120 is provided with six mounting grooves 121, of course, the number of mounting grooves 121 is not limited to this, and is determined according to the number of photoelectric sensors. The six mounting grooves 121 are arranged at equal intervals in the circumferential direction, and the mounting grooves 121 are used to provide a closed mounting space for the photoelectric sensor, so as to avoid the photoelectric sensor from being affected by the outside world, and improve the detection accuracy of the sensor. By forming a closed mounting space, foreign matters such as dust and liquid can be effectively prevented from entering, the sensitive elements of the photoelectric sensor are protected, electromagnetic interference and light interference are reduced, the signal transmission of the photoelectric sensor is stable and reliable, and thus the detection accuracy is improved. The six photoelectric sensors are correspondingly arranged in the six mounting grooves 121, and the six light shielding elements 113 are correspondingly inserted into the six mounting grooves 121.
[0043] In an embodiment of the present application, as shown in Figure 1 The circuit board 130 is a circular circuit board, and the circuit board 130 is clamped between the bottom shell 140 and the intermediate shell 120. The bottom shell 140, the circuit board 130, the intermediate shell 120 and the sensing element 110 are sequentially arranged in the axial direction, so that the overall volume of the force sensor is effectively controlled, the compactness of the force sensor is improved, and the force sensor can be easily integrated into an ultrasonic scanner with limited space without affecting the normal use and operation flexibility of the ultrasonic scanner.
[0044] In an embodiment of the present application, as shown in Figure 5 The other side of the intermediate shell 120 is provided with a plurality of first support portions, and the plurality of first support portions are arranged at intervals in the circumferential direction. The side of the bottom shell 140 facing the intermediate shell 120 is provided with a plurality of second support portions 141, and the plurality of second support portions 141 are arranged at intervals in the circumferential direction. The positions of the first support portions correspond to the positions of the second support portions 141 one by one, and the circuit board 130 is clamped between the first support portions and the second support portions 141. Thus, a gap is formed between the circuit board 130 and the intermediate shell 120 and between the circuit board 130 and the bottom shell 140, which is used as a heat dissipation channel of the circuit board 130, improving the heat dissipation efficiency of the circuit board 130. A stable temperature environment helps to maintain the performance stability of the electronic elements on the circuit board 130, thereby ensuring the accuracy of the sensor output signal.
[0045] Figure 6 An example of the principle diagram of the force sensor for the ultrasonic scanner provided by the present application is shown in Figure 6 The present application also provides a fitting method for a force sensor for an ultrasonic scanner, which is based on the force sensor for an ultrasonic scanner of any one of the above-mentioned embodiments, and comprises the following steps: The force sensor connecting piece 170 is connected with the deformation element 111, and the fixing seat 190 is connected with the bottom shell 140; An external force is applied on the force applying element 150 to make the force sensor connecting element 170 drive the deformation element 111 to deform; The standard force sensor 160 and the force sensor output value are obtained, and the standard force sensor 160 and the force sensor output value are fitted by using the following formula (1); (1) Wherein, F represents the standard force sensor output value, f represents the force sensor output value, represents the transpose of the force sensor output value vector, C represents the constant term parameter, L represents the linear term parameter, and Q represents the quadratic term parameter.
[0046] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A force sensor for an ultrasonic scanner, characterized in that: include: A sensing element (110), the sensing element (110) comprising: A deformation element (111), the deformation element (111) is connected to the clamping device, the deformation element (111) is annular, and the deformation element (111) is used to deform when the probe on the clamping device is subjected to an external force; a fixing element (112), the fixing element (112) being arranged in the deformable element (111), the fixing element (112) being connected to the inner wall of the deformable element (111) via a plurality of elastic members (114); a plurality of shading elements (113), wherein the plurality of shading elements (113) are arranged at intervals on one side of the deformation element (111); a fixing component, the fixing component being arranged on one side of the deformable element (111), the fixing component being connected to the fixing element (112), the fixing component being provided with a plurality of photoelectric sensors, the positions of the plurality of photoelectric sensors corresponding to the positions of the plurality of light-shielding elements (113) on a one-to-one basis, the photoelectric sensors being used to detect the displacement of the corresponding light-shielding element (113) when the deformable element (111) is deformed, and outputting a displacement electrical signal; A circuit board (130) is electrically connected to the plurality of shading elements (113), and the circuit board (130) is used to obtain the displacement electrical signal and calculate the magnitude of the external force applied to the probe.
2. The force sensor for an ultrasonic scanner according to claim 1, wherein: The elastic member (114) is an arc-shaped sheet structure, and a plurality of the elastic members (114) are arranged around the periphery of the fixed element (112). One end of the elastic member (114) is connected to the fixed element (112), and the other end of the elastic member (114) is connected to the inner wall of the deformation element (111).
3. The force sensor for an ultrasonic scanner according to claim 1, wherein: The fixing element (112), the elastic member (114) and the deformation element (111) are integrally formed.
4. The force sensor for an ultrasonic scanner according to any one of claims 1 to 3, characterized in that: A plurality of first connecting blocks (115) are arranged at intervals on the outer peripheral surface of the fixing element (112), a plurality of second connecting blocks (116) are arranged at intervals on the inner wall of the deformation element (111), one end of the elastic member (114) is connected to the first connecting block (115), and the other end of the elastic member (114) is connected to the second connecting block (116).
5. The force sensor for an ultrasonic scanner according to claim 4, wherein: In two adjacent elastic members (114), one end of one elastic member partially overlaps with the other end of the other elastic member in a radial direction; when the deformation of the deformation element (111) is greater than a preset value, the overlapping portions of the two adjacent elastic members (114) in the radial direction abut against the first connecting block (115) and / or the second connecting block (116).
6. The force sensor for an ultrasonic scanner according to any one of claims 1 to 3, characterized in that: The plurality of shading elements (113) are arranged at intervals along the circumferential direction, and the distance between two adjacent shading elements (113) is equal.
7. The force sensor for an ultrasonic scanner according to any one of claims 1 to 3, characterized in that: The fixing assembly includes: an intermediate housing (120), one side of the intermediate housing (120) being detachably connected to the fixing element (112); A bottom shell (140) is connected to the other side of the intermediate shell (120).
8. The force sensor for an ultrasonic scanner according to claim 7, wherein: A plurality of mounting slots (121) are provided on one side of the intermediate housing (120), the plurality of photoelectric sensors are arranged in the plurality of mounting slots (121) in a one-to-one correspondence, and the plurality of shading elements (113) are inserted in the plurality of mounting slots (121) in a one-to-one correspondence.
9. The force sensor for an ultrasonic scanner according to claim 7, wherein: The circuit board (130) is clamped between the bottom shell (140) and the middle shell (120).
10. A fitting method for a force sensor for an ultrasonic scanner, the fitting method being based on the force sensor for an ultrasonic scanner according to any one of claims 1 to 9, characterized in that: include: Connecting the force sensor connector (170) to the deformation element (111), and connecting the fixing seat (190) to the bottom shell (140); Applying an external force to the force applying element (150) so that the force sensor connecting member (170) drives the deformation element (111) to deform; Obtaining the values output by the standard force sensor (160) and the force sensor, and fitting the values output by the standard force sensor (160) and the force sensor using the following formula (1); （1） Wherein, F represents the value output by the standard force sensor, f represents the value output by the force sensor, represents the transpose of the force sensor output numerical vector, C represents the constant term parameter, L represents the linear term parameter, and Q represents the quadratic term parameter.