Ultrasonic knife frequency and amplitude testing device

Abstract

The utility model discloses an ultrasonic knife frequency and amplitude testing device. The device comprises a first support assembly; the rotating support assembly is rotatably arranged on the first support assembly; the second support assembly is arranged opposite to the first support assembly; the vibration meter is arranged on the second support assembly and used for collecting the vibration amplitude and frequency of the ultrasonic knife head installed on the rotary support assembly. In conclusion, by means of the testing device, in the first aspect, the ultrasonic knife can be rotated along with the rotating support assembly so that the ultrasonic knife can be tested at multiple angles, testing leakage points can be avoided, and the performance evaluation precision of the ultrasonic knife can be improved; and in the second aspect, a non-contact measurement method is adopted, high efficiency and convenience are achieved, the ultrasonic output characteristics of the ultrasonic equipment in the working state can be detected, and the actual use performance of the equipment can be reflected more truly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical instrument detection, concretely relates to an ultrasonic knife frequency and amplitude testing device. BACKGROUND

[0002] The ultrasonic knife is a kind of surgical instrument using electric energy conversion to complete the cutting and hemostasis of tissue, and it has the advantages of neat knife edge, fast hemostasis, small thermal damage area and less smoke generation compared with high-frequency electric knife and laser cutter; The ultrasonic knife has been widely used in various surgical treatments and has become a research hotspot in the relevant fields at home and abroad.

[0003] In order to evaluate the efficiency of the ultrasonic knife, a microscope and hydrophone method are often used to measure the main amplitude and frequency of the ultrasonic knife host in the related technology, but this way has low test efficiency and large error, and because the ultrasonic knife head is often slightly curved, it is difficult to find the normal vector plane of its axial direction in actual test, so the performance of the ultrasonic knife cannot be evaluated accurately and from multiple angles. UTILITY MODEL CONTENT

[0004] The utility model is just to solve the above-mentioned technical problem, and its purpose is to provide an ultrasonic knife frequency and amplitude testing device, which can improve the test accuracy of the frequency and amplitude of the ultrasonic knife.

[0005] The utility model discloses an ultrasonic knife frequency and amplitude testing device, which comprises a first support assembly, a rotating support assembly rotatably arranged on the first support assembly, a second support assembly oppositely arranged with the first support assembly, and a vibration tester arranged on the second support assembly, and the vibration tester is used to collect the vibration amplitude and frequency of the ultrasonic knife head installed on the rotating support assembly.

[0006] Optionally, the rotating support assembly comprises a rocker arm rotatably connected with the first support assembly, and an ultrasonic knife mounting seat slidably connected with the rocker arm, and the ultrasonic knife mounting seat can slide along the extension direction of the rocker arm to adjust the distance between itself and the vibration tester.

[0007] Optionally, the rotating support assembly further comprises an ultrasonic knife fixing member arranged on the ultrasonic knife mounting seat.

[0008] Optionally, the first support assembly comprises a first support, and a turntable assembly, the rocker arm is rotatably connected with the turntable assembly, and the rocker arm is slidably connected with the turntable assembly in the rotation direction of the rocker arm.

[0009] Optionally, the turntable assembly comprises a mounting arm arranged on the first support, and the rocker arm is rotatably connected with the mounting arm, and a guide ring arranged on the mounting arm, and the rocker arm is slidably connected with the guide ring in the rotation direction of the rocker arm.

[0010] Optionally, the rocker arm is provided with a limiting block, and the limiting block is in sliding contact with the peripheral surface of the guide ring.

[0011] Optionally, the second support assembly comprises: a second support, a height adjustment support provided on the second support, and the vibration tester is provided on the height adjustment support.

[0012] Optionally, the second support assembly further comprises a fine adjustment support provided between the vibration tester and the height adjustment support, and the fine adjustment support is configured to adjust the position of the vibration tester in at least one of the length, width or height.

[0013] Optionally, the base is further provided, and the first support assembly and the second support assembly are both provided on the base, wherein at least one of the first support assembly and the second support assembly is connected to the base by sliding, so as to adjust the distance between the first support assembly and the second support assembly.

[0014] Optionally, the first support assembly is fixed to the base, the second support assembly is connected to the base by sliding, a second stopper is provided on the base, and the second stopper is in stopper cooperation with the second support assembly.

[0015] The beneficial effects of the utility model are as follows:

[0016] The application discloses an ultrasonic knife frequency and amplitude testing device, which comprises a first support assembly, a rotating support assembly rotatably provided on the first support assembly, a second support assembly oppositely provided with the first support assembly, and a vibration tester provided on the second support assembly, wherein the vibration tester is used for collecting the vibration amplitude and frequency of an ultrasonic knife head installed on the rotating support assembly.

[0017] The testing process of the testing device is described below by taking a laser vibration tester as an example:

[0018] Step S100: the ultrasonic knife is installed on the rotating support assembly, the ultrasonic knife main machine and the ultrasonic knife are electrically connected, and the vibration tester and the oscilloscope are electrically connected; the oscilloscope can transform the electric signal invisible to the naked eye into a visible image, so as to facilitate the research on the change process of various electric phenomena.

[0019] Step S200: the ultrasonic knife main machine is controlled to transmit energy to the ultrasonic knife, so that the ultrasonic knife vibrates.

[0020] Step S300: the laser beam of the laser vibration tester is emitted to the surface of the ultrasonic knife head, and the reflected laser beam is subjected to Doppler shift due to the movement of the surface, from which the amplitude and frequency of the surface of the ultrasonic knife head can be extracted; during the test process, the test angle of the ultrasonic knife can be changed by rotating the ultrasonic knife with the rotating support assembly.

[0021] Step S400: the collected amplitude and frequency are transmitted from the laser vibration tester to the oscilloscope, and the change curve of the instantaneous value of the measured signal is drawn on the screen of the oscilloscope, so as to realize the observation of the amplitude and frequency.

[0022] In summary, by using the test device of the present application, in a first aspect, the ultrasonic knife can be tested at multiple angles by rotating the ultrasonic knife with the rotating support assembly, avoiding test omissions and improving the accuracy of the performance evaluation of the ultrasonic knife; in a second aspect, the present application uses a non-contact measurement method, which is efficient and convenient, can detect the ultrasonic output characteristics of the ultrasonic equipment in the working state, and more truly reflects the actual use performance of the equipment; in a third aspect, the laser vibration meter is used for vibration measurement, the laser focusing spot is small, the spatial resolution is high, the small-size ultrasonic devices such as ultrasonic surgical knives can be quickly positioned and measured, the highest frequency of the high-frequency ultrasonic waves that can be detected is about 20MHz, and the weak vibration resolution requirement below 1nm can be met, and the detection precision is extremely high. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above features and advantages of the present application can be better understood after reading the detailed description of the embodiments of the present application in conjunction with the following drawings. In the drawings, the components are not necessarily drawn to scale, and components having similar related properties or features can have the same or similar reference numerals.

[0024] Fig. 1 is a structural diagram of the present application;

[0025] Fig. 2 is a structural diagram of the first support assembly and the rotating support assembly of the present application;

[0026] Fig. 3 is a structural diagram of the second support assembly of the present application.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 10-ultrasonic knife,

[0029] 20-ultrasonic knife main machine,

[0030] 100-first support assembly,

[0031] 110-first support,

[0032] 120-rotating disc assembly, 121-mounting arm, 122-guiding ring,

[0033] 200-rotating support assembly,

[0034] 210-rocker arm, 211-limiting block, 212-first stopper,

[0035] 220-ultrasonic knife mounting seat,

[0036] 230-ultrasonic knife fixing piece,

[0037] 300-second support assembly,

[0038] 310-second support,

[0039] 320-height adjustment support,

[0040] 330-fine adjustment support, 331-first knob, 332-second knob,

[0041] 400-vibration tester,

[0042] 500-oscilloscope,

[0043] 600-base,

[0044] 610-second stop. DETAILED DESCRIPTION

[0045] The utility model will be further described below in combination with specific embodiments and drawings, and more details are set forth in the following description so as to fully understand the utility model, but the utility model can obviously be implemented in various other ways different from the description, and those skilled in the art can make similar generalization and deduction according to actual application conditions without departing from the connotation of the utility model, therefore the protection scope of the utility model should not be limited by the content of the specific embodiments.

[0046] It should be noted that these and other subsequent drawings are merely examples, not drawn in proportion, and should not be used as a limitation on the actual protection scope required by the utility model.

[0047] The utility model will be further described below in combination with specific embodiments and drawings, and more details are set forth in the following description so as to fully understand the utility model, but the utility model can obviously be implemented in various other ways different from the description, and those skilled in the art can make similar generalization and deduction according to actual application conditions without departing from the connotation of the utility model, therefore the protection scope of the utility model should not be limited by the content of the specific embodiments. Figs. 1-3 The technical scheme of the present application is described.

[0048] The utility model discloses an ultrasonic knife frequency and amplitude testing device, testing device includes: first support assembly 100, rotating support assembly 200, second support assembly 300 and vibration tester 400.

[0049] Wherein, rotating support assembly 200 is rotatably arranged in first support assembly 100, and ultrasonic knife 10 is installed to rotating support assembly 200.Second support assembly 300 is oppositely arranged with first support assembly 100 along the length direction of testing device.

[0050] Vibration tester 400 is arranged on second support assembly 300, and vibration tester 400 can be laser vibration tester, optical microscope and other image acquisition equipment, and vibration tester 400 is used for collecting the vibration amplitude and frequency of the knife head of ultrasonic knife 10 installed to rotating support assembly 200.

[0051] The testing process of the testing device of the utility model will be described below taking laser vibration tester as an example:

[0052] Step S100: install the ultrasonic knife 10 to the rotating support assembly 200, and electrically connect the ultrasonic knife main machine 20 and the ultrasonic knife 10, and electrically connect the vibration meter 400 and the oscilloscope 500, and the oscilloscope 500 can convert the invisible electrical signal into visible image, so as to facilitate people to study the change process of various electrical phenomena;

[0053] Step S200: control the ultrasonic knife main machine 20 to transmit energy to the ultrasonic knife 10, so that the ultrasonic knife 10 vibrates;

[0054] Step S300: the laser beam of the laser vibration meter 400 is emitted to the surface of the head of the ultrasonic knife 10, and the reflected laser beam is Doppler shifted due to the movement of the surface, from which the amplitude and frequency of the surface of the head of the ultrasonic knife 10 can be extracted; during the test, the test angle of the ultrasonic knife 10 can be changed by rotating the ultrasonic knife 10 with the rotating support assembly 200;

[0055] Step S400: the collected amplitude and frequency are transmitted to the oscilloscope 500 by the laser vibration meter 400, and the change curve of the instantaneous value of the measured signal is drawn on the screen of the oscilloscope 500, so as to realize the observation of the amplitude and frequency.

[0056] In summary, by using the test device of the present application, in the first aspect, the ultrasonic knife 10 can be tested at multiple angles by rotating the ultrasonic knife 10 with the rotating support assembly 200, so as to avoid test omissions and improve the precision of performance evaluation of the ultrasonic knife 10; in the second aspect, the non-contact measurement method is used, which is efficient and convenient, can detect the ultrasonic wave output characteristics of the ultrasonic equipment in the working state, and more truly reflects the actual use performance of the equipment; in the third aspect, the laser vibration meter is used for vibration measurement, the laser focusing spot is small, the spatial resolution is high, the ultrasonic surgical knife and other small size ultrasonic devices can be quickly positioned and measured, the highest frequency of the high frequency ultrasonic wave that can be detected is about 20MHz, and the weak vibration resolution requirement below 1nm can be met, and the detection precision is extremely high.

[0057] Optionally, the rotating support assembly 200 comprises a rocker arm 210 and an ultrasonic knife mounting seat 220, and the ultrasonic knife 10 is mounted on the ultrasonic knife mounting seat 220. The rocker arm 210 is rotatably connected to the first support assembly 100, a sliding rail can be arranged on the rocker arm 210, and a sliding groove matched with the sliding rail can be arranged on the ultrasonic knife mounting seat 220, so that the ultrasonic knife mounting seat 220 is slidably connected to the rocker arm 210, and then the ultrasonic knife mounting seat 220 can slide along the extension direction of the rocker arm 210, so as to adjust the distance between itself and the vibration meter 400. In this way, the test distance between the ultrasonic knife 10 and the vibration meter 400 can be adjusted, so as to ensure the effective test.

[0058] Further, the angle fixing device is arranged on the rocker arm 210 to fix the angle position after the rocker arm 210 rotates to the required test angle. Similarly, the spacing fixing device is arranged on the ultrasonic knife mounting seat 220 to lock the spacing between the ultrasonic knife mounting seat 220 and the vibration meter 400 after the spacing is adjusted in place. The angle fixing device and the spacing fixing device can be a set screw, a latch, etc., which will not be described in detail here.

[0059] Further, the first stopper 212 is arranged on the rocker arm 210, and the first stopper 212 is arranged in pairs along the extension direction of the rocker arm 210. The ultrasonic knife mounting seat 220 is limited between the first stopper 212 arranged in pairs to prevent excessive movement of the ultrasonic knife mounting seat 220.

[0060] Optionally, the rotary support assembly 200 further comprises an ultrasonic knife fixing member 230 arranged on the ultrasonic knife mounting seat 220. The ultrasonic knife fixing member 230 can be a pressing plate, a clamping jaw, a suction cup, a bundling member, etc. any device that can fix the workpiece to fix the position of the ultrasonic knife 10 mounted on the ultrasonic knife mounting seat 220.

[0061] Optionally, the first support assembly 100 comprises a first support 110 and a turntable assembly 120. The rocker arm 210 is rotatably connected to the turntable assembly 120, and the rocker arm 210 is slidingly fitted with the turntable assembly 120 around the rotation direction of the rocker arm 210 to guide the rotation path of the rocker arm 210, thereby controlling the rotation accuracy of the rocker arm 210.

[0062] Optionally, the turntable assembly 120 comprises a mounting arm 121 and a guide ring 122. The mounting arm 121 is arranged on the first support 110, and the rocker arm 210 is rotatably connected to the mounting arm 121. The guide ring 122 is arranged on the mounting arm 121, and the rocker arm 210 is slidingly fitted with the guide ring 122 around the rotation direction of the rocker arm 210 to guide the rotation path of the rocker arm 210. The arc length of the guide ring 122 is greater than πr, where r is the radius of the guide ring 122, so that the rotation angle of the rocker arm 210 is greater than 180°, further ensuring the multi-angle test of the ultrasonic knife 10 and no test missing points.

[0063] Optionally, the rocker arm 210 is provided with a limiting block 211, and the limiting block 211 is in sliding contact with the peripheral surface of the guide ring 122, such as the limiting block 211 and the outer peripheral surface of the guide ring 122 in sliding contact, thereby guiding the rotation path of the rocker arm 210 and improving the rotation accuracy. Further, the surface of the limiting block 211 used to contact the guide ring 122 is arranged as an arc surface, and the arc surface of the limiting block 211 and the curvature radius of the peripheral surface of the guide ring 122 are consistent, so as to increase the contact area of the limiting block 211 and the guide ring 122, thereby improving the guiding effect.

[0064] Optionally, the second support assembly 300 comprises a second support 310 and a height adjustment support 320. The height adjustment support 320 is arranged on the second support 310, and the vibration meter 400 is arranged on the height adjustment support 320. The height adjustment support 320 can be a scissor lift platform, a hydraulic lift platform, an electric lift platform, or any device capable of lifting, so as to adjust the height position of the vibration meter 400 and better detect the ultrasonic knife 10.

[0065] Optionally, the second support assembly 300 further comprises a fine adjustment support 330 arranged between the vibration meter 400 and the height adjustment support 320. The fine adjustment support 330 is configured to adjust the position of the vibration meter 400 in at least one of the length, width or height of the test device.

[0066] For example, the fine adjustment support 330 can be provided with a first fine adjustment assembly and a second fine adjustment assembly. The first fine adjustment assembly, the second fine adjustment assembly and the vibration meter 400 are arranged in sequence along the height direction of the test device. The first fine adjustment assembly can be a high-precision scissor lift platform, a gear and rack mechanism, a screw rod lifting mechanism, or any lifting mechanism. The lifting height of the first fine adjustment assembly is controlled by a first knob 331, so as to fine adjust the height position of the vibration meter 400. The second fine adjustment assembly can be a lead screw transmission mechanism, which is controlled by a second knob 332 to fine adjust the position of the vibration meter 400 in the width direction of the test device. In this way, the correspondence between the vibration meter 400 and the ultrasonic knife 10 can be further improved, thereby improving the test precision.

[0067] Optionally, the test device further comprises a base 600, and the first support assembly 100 and the second support assembly 300 are arranged on the base 600. At least one of the first support assembly 100 and the second support assembly 300 is connected to the base 600 through sliding, so as to adjust the distance between the first support assembly 100 and the second support assembly 300. For example, the first support assembly 100 is fixed to the base 600, and the second support assembly 300 is connected to the base 600 through sliding. Alternatively, the first support assembly 100 is connected to the base 600 through sliding, and the second support assembly 300 is fixed to the base 600. Alternatively, the first support assembly 100 and the second support assembly 300 are respectively connected to the base 600 through sliding.

[0068] With the first support assembly 100 fixed, the second support assembly 300 sliding as an example, the second support 310 of the second support assembly 300 is provided with a sliding groove, the base 600 is provided with a sliding rail matched with the sliding groove of the second support 310, and then the sliding of the second support assembly 300 on the base 600 is realized. In this way, the second support assembly 300 and the base 600 are connected through sliding, the position of the vibration meter 400 in the length direction is coarsely adjusted; the height adjusting support 320 is used to coarsely adjust the position of the vibration meter 400 in the height direction; the fine adjustment support 330 is used to finely adjust the position of the vibration meter 400 in the length direction and the width direction, so that the position of the vibration meter 400 in the height direction, the length direction and the width direction can be adjusted, and the test precision of the ultrasonic knife 10 is further ensured.

[0069] Further, the base 600 is provided with a second stop piece 610, and the second stop piece 610 and the second support assembly 300 are stop matched in the length direction of the test device, so as to prevent excessive movement of the second support assembly 300.

[0070] The utility model discloses although the above-mentioned is disclosed with preferable embodiment, but it is not used to limit the utility model, and any person skilled in the art can make possible change and modification without departing from the spirit and scope of the utility model. Therefore, all the modifications, equivalent changes and modifications made to the above-mentioned embodiments according to the technical essence of the utility model, all fall within the protection scope defined by the utility model claims.

Claims

1. An ultrasonic shears frequency and amplitude testing device, characterized by, The utility model relates to a first support assembly (100); A rotating support assembly (200) rotatably arranged on the first support assembly (100), the rotating support assembly (200) comprising a rocker arm (210) rotatably connected to the first support assembly (100), and an ultrasonic knife mounting seat (220) slidably connected to the rocker arm (210); A second support assembly (300) arranged opposite to the first support assembly (100); A vibration meter (400) arranged on the second support assembly (300), the vibration meter (400) being used to collect the vibration amplitude and frequency of the ultrasonic knife head of an ultrasonic knife (10) mounted on the rotating support assembly (200); The ultrasonic knife mounting seat (220) can slide along the extension direction of the rocker arm (210) to adjust the distance between itself and the vibration meter (400). The rotating support assembly (200) further comprises an ultrasonic knife fixing member (230) arranged on the ultrasonic knife mounting seat (220).

2. The test device of claim 1, wherein, The first support assembly (100) comprises:

3. The test device of claim 1, wherein, A first support (110); A turntable assembly (120), the rocker arm (210) being rotatably connected to the turntable assembly (120), and the rocker arm (210) being in sliding fit with the turntable assembly (120) around the rotation direction of the rocker arm (210). The turntable assembly (120) comprises:

4. The test device of claim 3, wherein, An installation arm (121) arranged on the first support (110), the rocker arm (210) being rotatably connected to the installation arm (121); A guide ring (122) arranged on the installation arm (121), the rocker arm (210) being in sliding fit with the guide ring (122) around the rotation direction of the rocker arm (210). The rocker arm (210) is provided with a limiting block (211), the limiting block (211) being in sliding contact with the peripheral surface of the guide ring (122).

5. The test device of claim 4, wherein, The second support assembly (300) comprises:

6. The test device of claim 1, wherein, A second support (310), A height adjustment support (320) arranged on the second support (310), the vibration meter (400) being arranged on the height adjustment support (320). The second support assembly (300) further comprises a fine adjustment support (330) arranged between the vibration meter (400) and the height adjustment support (320), 7. The test device of claim 6, wherein, The fine adjustment support (330) is configured to adjust the position of the vibration meter (400) in at least one of the length, width or height directions. Further comprising a base (600), the first support assembly (100) and the second support assembly (300) being arranged on the base (600), wherein 8. The test device of claim 1, wherein, At least one of the first support assembly (100) and the second support assembly (300) is slidably connected to the base (600) to adjust the distance between the first support assembly (100) and the second support assembly (300). ​ 9. The test device of claim 8, wherein, The first support assembly (100) is fixed to the base (600), the second support assembly (300) is slidingly connected to the base (600), the base (600) is provided with a second stop (610), and the second stop (610) is in stop cooperation with the second support assembly (300).

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