Optical line diameter measuring instrument and measuring method

Abstract

The application discloses an optical linear diameter measuring instrument, and belongs to the technical field of medical instruments. The measuring instrument comprises a measuring instrument body, a measuring unit, a clamping unit and a control unit, wherein the measuring unit comprises a measuring frame, the measuring frame is provided with a first laser receiving sensor and a first laser emitting area arranged on one diameter of a measured body, the measuring frame is provided with a second laser receiving sensor and a reflecting prism arranged on another diameter of the measured body, the measuring frame is provided with a second laser emitting area, a laser generator is arranged in the second laser emitting area or the first laser emitting area, and the measuring frame is provided with a first straight line module for controlling the laser generator to reciprocatingly move between the first laser emitting area and the second laser emitting area. The application further discloses an optical linear diameter measuring method. The test device of the application has the advantages of simple structure, small size, high test precision, perfect overall function and strong practicability, and can test a sample linear body through photoelectric effect without contacting the sample linear body.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an optical wire diameter measuring instrument and a measuring method. Background Technology

[0002] Medical sutures are frequently used in surgical procedures. To ensure product quality, especially suture diameter specifications, precise and efficient testing instruments are required. For example, the testing method mentioned in Appendix A of YY 0167 "Non-absorbable Surgical Sutures" requires extremely high accuracy in suture diameter measurement (minimum graduation value not exceeding 0.002mm).

[0003] Existing wire diameter measuring instruments on the market are all mechanical, which can cause compression and alteration of the wire diameter during measurement, making accurate measurement impossible. Furthermore, according to the measurement method, after measuring the thread once, it needs to be rotated 90 degrees and measured again. Changes in the thread's condition due to thread clamping and changes in the measurement point can easily lead to measurement errors. This invention addresses these problems by proposing a novel optical wire diameter measuring instrument and method. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an optical wire diameter measuring instrument and method. A laser generator continuously emits laser light, which illuminates a laser receiving sensor to generate an electrical signal. The laser generator is moved so that the longitudinal laser sweeps across the sample under test. The wire diameter of the sample is calculated by observing the changes in the electrical signal output from the bottom laser receiving sensor. The laser generator is also moved so that the laser illuminates a reflecting prism, changing the laser beam from longitudinal to transverse. This transverse laser sweeps across the sample under test, and the wire diameter is calculated by observing the changes in the electrical signal output from the side laser receiving sensor. The wire diameter is measured at multiple points on the sample, and the average value is taken to obtain the final measurement result.

[0005] To solve the above-mentioned technical problems, the present invention achieves its objective as follows: An optical wire diameter measuring instrument according to the present invention includes a measuring instrument body, a measuring unit, a clamping unit, and a control unit. The measuring unit includes a measuring frame, on which a first laser receiving sensor and a first laser emitting area are disposed in one radial direction of the measured object. The first laser emitting area is disposed on one side of the measured object, and the first laser receiving sensor is disposed on the other side of the measured object. The measuring frame also includes a second laser receiving sensor and a reflecting prism disposed in another radial direction of the measured object. The reflecting prism is disposed on one side of the measured object, and the second laser receiving sensor is disposed on the other side of the measured object. The measuring frame further includes a second laser emitting area, and a laser generator is disposed within either the second or first laser emitting area. The measuring frame also includes a first linear module for controlling the laser generator to reciprocate between the first and second laser emitting areas. When the laser generator is located in the second laser emitting area, the light source generated by the laser generator is directed towards the reflecting prism.

[0006] The present invention is further configured such that: a smoke generator is provided on the measuring frame, and the smoke generator is provided with a smoke spray nozzle facing the object being measured.

[0007] The present invention is further configured such that the structural line containing the first laser receiving sensor and the first laser emitting area is perpendicular to the structural line containing the second laser receiving sensor and the reflecting prism.

[0008] The present invention is further configured such that: the clamping unit includes a hook and a guide wheel disposed on the axial direction of the object being measured, the guide wheel is disposed on one side of the measuring unit, the hook is disposed on the other side of the measuring unit, a support is provided between the guide wheel and the measuring unit, a pressure groove is provided on the support for the object being measured to pass through, a pressure block is embedded in the pressure groove and presses on the object being measured, a crank arm is provided on the support, and the guide wheel is disposed on the crank arm.

[0009] The present invention is further configured such that: the clamping unit further includes a second linear module for controlling the measuring unit to move closer to or further away from the hook.

[0010] The present invention is further configured such that: the light source emission port of the laser generator is provided with a focusing lens fixed on the laser generator.

[0011] The present invention is further configured such that: the control unit includes a display screen, a button, a speaker, and a built-in computer; the display screen is a touch screen electrically connected to the built-in computer, the button is a virtual button located within the display screen, and the speaker is electrically connected to the built-in computer;

[0012] The first laser receiving sensor, the second laser receiving sensor, and the laser generator are all electrically connected to the built-in computer; the smoke generator is electrically connected to the built-in computer; the first linear module and the second linear module are electrically connected to the built-in computer.

[0013] The present invention relates to an optical line diameter measurement method, which uses an optical line diameter measuring instrument and includes the following steps:

[0014] S1. Tie one end of the sample line to be tested to the hook and suspend a standard weight at the other end;

[0015] S2. Adjust the clamping unit so that one end of the sample line to be tested, which suspends the standard weight, is located in the pressure groove of the support and hangs on the guide wheel. The standard weight hangs down naturally, and the pressure block is embedded in the pressure groove and pressed tightly on the sample line to be tested.

[0016] S3. Start the built-in computer in the control unit, operate the button to turn on the laser generator and smoke generator. The initial laser generator is located in the first laser emission area.

[0017] S4. After the laser generator is turned on, it will emit a laser beam, which is received by the first laser receiving sensor. The first linear module controls the laser to move and sweep across the sample line to be tested. The internal computer calculates, measures and records the line diameter based on the signal, and broadcasts the measurement value through a speaker.

[0018] S5. By operating the first linear module, the laser generator is switched from the first laser emission area to the second laser emission area. After the laser generator is turned on, it will emit a laser beam, which is reflected by the reflecting prism and received by the second laser receiving sensor. The first linear module controls the laser to translate so that it sweeps across the sample line to be tested. The internal computer calculates, measures and records the line diameter based on the signal and broadcasts the measurement value through the speaker.

[0019] S6. By operating the second linear module, change the axial position of the measuring unit on the sample line to be measured, and repeat steps S4 and S5;

[0020] S7. Repeat step S6 6 to 8 times;

[0021] S8. Calculate the average wire diameter using multiple sets of recorded test data.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. The testing device implemented in this invention has a simple structure and small size. It achieves high testing accuracy by using the photoelectric effect without contacting the sample line under test.

[0024] 2. The testing method implemented in this invention uses a variable laser direction, and the sample line under test only needs to be clamped once, without changing the state during the testing process, thus improving the reliability of the measurement;

[0025] 3. The laser emitted by the laser generator has a diameter of about 1 to 2 mm. The diameter of the laser is reduced to 1 to 2 μm by using a reflecting prism to improve the measurement accuracy.

[0026] 4. The testing device implemented in this invention can generate smoke that makes the laser position more obvious, making it easier to adjust the position during measurement;

[0027] 5. The testing device implemented in this invention can automatically broadcast the test results, which is convenient for measurement and comparison. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram illustrating the structure of the measuring unit in this invention;

[0030] Figure 3 yes Figure 2 A structural diagram from another perspective;

[0031] Figure 4 This is a partial structural schematic diagram of the present invention. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions of the present invention, preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that these descriptions are merely for further illustrating the features and advantages of the present invention, and not for limiting the scope of the patent claims of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0034] Example 1

[0035] See Figures 1 to 4As shown, this embodiment involves an optical wire diameter measuring instrument and a measuring method, including a measuring instrument body. The measuring instrument body is provided with a measuring unit 100, a clamping unit 200, and a control unit 300. The measuring unit 100 includes a measuring frame 1. The measuring frame 1 is provided with a first laser receiving sensor 2 and a first laser emitting area 3 arranged in one radial direction of the measured object. The first laser emitting area 3 is located on one side of the measured object, and the first laser receiving sensor 2 is located on the other side of the measured object. The measuring frame 1 is provided with a second laser receiving sensor 4 and a reflecting prism 5 arranged in another radial direction of the measured object. The reflecting prism 5 is located on one side of the measured object, and the second laser receiving sensor 4 is located on the other side of the measured object. The measuring frame 1 is provided with a second laser emitting area 6. A laser generator 7 is provided in the second laser emitting area 6 or the first laser emitting area 3. The measuring frame 1 is provided with a first linear module 8 that controls the laser generator to reciprocate between the first laser emitting area 3 and the second laser emitting area 6. When the laser generator 7 is located in the second laser emitting area 6, the light source generated by the laser generator 7 is directed toward the reflecting prism 5.

[0036] Furthermore, the measuring frame 1 is equipped with a smoke generator 9, and the smoke generator 9 is equipped with a smoke spray nozzle 10 facing the object being measured.

[0037] Furthermore, the structural line containing the first laser receiving sensor 2 and the first laser emitting area 3 is perpendicular to the structural line containing the second laser receiving sensor 4 and the reflecting prism 5.

[0038] Furthermore, the clamping unit 200 includes a hook 11 and a guide wheel 12 disposed on the axial direction of the object being measured. The guide wheel 12 is disposed on one side of the measuring unit 100, and the hook 11 is disposed on the other side of the measuring unit 100. A support 13 is provided between the guide wheel 12 and the measuring unit 100. A pressure groove 14 is provided on the support 13 for the object being measured to pass through. A pressure block 15 is embedded in the pressure groove 14 and presses against the object being measured. A crank arm 16 is provided on the support 13, and the guide wheel 12 is disposed on the crank arm 16.

[0039] Furthermore, the clamping unit 200 also includes a second linear module 17 that controls the measuring unit 100 to move closer to or further away from the hook.

[0040] Furthermore, the laser generator 7 has a focusing lens fixed to its light source emission port. This focusing lens concentrates the emitted laser beam, resulting in a smaller beam diameter. This allows for more accurate reception by the laser receiving sensor after scanning the object being measured, significantly improving measurement precision.

[0041] Furthermore, the control unit 300 includes a display screen 18, buttons, a speaker 19, and a built-in computer (not shown in the figure); the display screen 18 is a touch screen electrically connected to the built-in computer, the buttons are virtual buttons located within the display screen, and the speaker 19 is electrically connected to the built-in computer.

[0042] The first laser receiving sensor, the second laser receiving sensor, and the laser generator are all electrically connected to the built-in computer; the smoke generator is electrically connected to the built-in computer; the first linear module and the second linear module are electrically connected to the built-in computer.

[0043] In this embodiment, the object under test is placed horizontally. The first laser receiving sensor 2 is located directly below the object under test, the first laser emitting area 3 is located directly above the object under test, the second laser receiving sensor 4 is located directly behind the object under test, and the reflecting prism 5 is located directly in front of the object under test. The first laser emitting area 3 and the second laser emitting area 6 are arranged one in front of the other. The reflecting prism 5 is a right-angle reflecting prism. When the laser generator 7 is initially positioned in the first laser emitting area 3, the laser is emitted directly from top to bottom and received by the first laser receiving sensor 2 below. When the laser generator 7 moves into the second laser emitting area 6, the laser will first enter the reflecting prism 5, be focused and emitted, and then be emitted from the other side of the reflecting prism 5 and received by the second laser receiving sensor 4. During the test, the laser movement trajectory is finely adjusted to sweep across the object under test. The diameter of the object under test is measured by calculating the time difference of the received signal.

[0044] The addition of smoke generator 9 allows carbon dioxide smoke to be emitted from smoke nozzle 10 when the smoke generator 9 is working, making the laser path more clearly visible.

[0045] An optical wire diameter measurement method, which uses an optical wire diameter measuring instrument, includes the following steps:

[0046] S1. Tie one end of the sample line to be tested to the hook 11 and suspend a standard weight at the other end;

[0047] S2. Adjust the clamping unit 200 so that one end of the sample line to be tested, which suspends the standard weight, is located in the pressure groove 14 of the support 13 and is hung on the guide wheel 12. The standard weight hangs down naturally, and the pressure block 15 is embedded in the pressure groove 14 and pressed tightly on the sample line to be tested.

[0048] S3. Start the built-in computer in the control unit 300, operate the button to turn on the laser generator 7 and the smoke generator 9. The initial laser generator 7 is located in the first laser emission area 3.

[0049] S4. When the laser generator 7 is turned on, it will emit a laser beam, which is received by the first laser receiving sensor 2. The first linear module 8 controls the laser to move and sweep across the sample line to be tested. The internal computer calculates, measures and records the line diameter based on the signal, and broadcasts the measurement value through a speaker.

[0050] S5. By operating the first linear module 8, the laser generator 7 is switched from the first laser emission area 3 to the second laser emission area 6. After the laser generator 7 is turned on, it will emit a laser beam, which is reflected by the reflecting prism 5 and received by the second laser receiving sensor 4. The first linear module 8 controls the laser to translate so that it sweeps across the sample line to be tested. The internal computer calculates, measures and records the line diameter based on the signal, and broadcasts the measurement value through the speaker.

[0051] S6. By operating the second linear module 17, change the axial position of the measuring unit 100 on the sample line to be measured, and repeat steps S4 and S5.

[0052] S7. Repeat step S6 6 to 8 times;

[0053] S8. Calculate the average wire diameter using multiple sets of recorded test data.

[0054] Unless otherwise specified, in this invention, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this invention 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, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0055] Unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" in this invention 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 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 invention based on the specific circumstances.

[0056] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An optical wire diameter measuring instrument comprising an instrument body, a measuring unit, a clamping unit and a control unit are arranged on the instrument body, characterized in that: The measurement unit comprises a measurement frame, a first laser receiving sensor and a first laser emitting area arranged on the measurement frame in a radial direction of the measured body, the first laser emitting area is arranged on one side of the measured body, the first laser receiving sensor is arranged on the other side of the measured body, a second laser receiving sensor and a reflecting prism are arranged on the measurement frame in another radial direction of the measured body, the reflecting prism is arranged on one side of the measured body, the second laser receiving sensor is arranged on the other side of the measured body, a second laser emitting area is arranged on the measurement frame, a laser generator is arranged in the second laser emitting area or the first laser emitting area, and a first linear module for controlling the laser generator to reciprocate between the first laser emitting area and the second laser emitting area is arranged on the measurement frame; when the laser generator is located in the second laser emitting area, the light source generated by the laser generator is emitted to the reflecting prism; A smoke generator is arranged on the measurement frame, and a smoke injection port with a nozzle directed towards the measured body is arranged on the smoke generator; the first laser receiving sensor and the first laser emitting area are arranged on a straight line perpendicular to a straight line on which the second laser receiving sensor and the reflecting prism are arranged; the clamping unit comprises a hook and a guide wheel arranged in an axial direction of the measured body, the guide wheel is arranged on one side of the measurement unit, the hook is arranged on the other side of the measurement unit, a support is arranged between the guide wheel and the measurement unit, a pressing groove for the measured body to pass through is arranged on the support, a pressing block for pressing the measured body is embedded in the pressing groove, a crank arm is arranged on the support, and the guide wheel is arranged on the crank arm; The clamping unit further comprises a second linear module for controlling the measurement unit to move close to or away from the hook; and a light collecting lens fixed on the laser generator is arranged on a light source emitting port of the laser generator.

2. The optical line diameter measuring instrument according to claim 1, characterized in that: The control unit comprises a display screen, buttons, a loudspeaker and a built-in computer; the display screen is a touch display screen electrically connected with the built-in computer, the buttons are virtual buttons arranged in the display screen, and the loudspeaker is electrically connected with the built-in computer; The first laser receiving sensor, the second laser receiving sensor and the laser generator are electrically connected with the built-in computer; the smoke generator is electrically connected with the built-in computer; and the first linear module and the second linear module are electrically connected with the built-in computer.

3. An optical line width measurement method characterized by: The measurement method uses the optical linear diameter measuring instrument according to claim 2, and comprises the following steps: S1. one end of the sample line to be measured is tied to the hook, and the other end is hung with a standard weight; S2. the clamping unit is adjusted, so that one end of the sample line to be measured, which suspends the standard weight, is located in the pressing groove of the support and is hung on the guide wheel, the standard weight naturally drops, the pressing block is embedded in the pressing groove and is pressed on the sample line to be measured; S3. the built-in computer in the control unit is started, the buttons are operated, the laser generator and the smoke generator are turned on, and the initial laser generator is located in the first laser emitting area; S4. after the laser generator is turned on, a laser beam is emitted, is received by the first laser receiving sensor, is controlled to move by the first linear module, sweeps through the sample line to be measured, the built-in computer calculates and records the linear diameter according to the signal, and the measurement value is broadcasted through the loudspeaker. S5. Through the operation of the first linear module, the laser generator is switched from the first laser emission area to the second laser emission area. After the laser generator is turned on, a laser beam is emitted, reflected by the reflecting prism, received by the second laser receiving sensor, and translated by the first linear module to scan the sample line. The internal computer calculates and records the line diameter size according to the signal, and broadcasts the measurement value through the loudspeaker; S6. Through the operation of the second linear module, the axial position of the measurement unit on the sample line is changed, and steps S4 and S5 are repeated; S7. Repeat the operation step S6 for 6 to 8 times; S8. Calculate the average value of the line diameter by recording multiple sets of test data.

Images