Shock wave therapeutic apparatus penetration depth testing device

Abstract

A shock wave therapeutic apparatus penetration depth testing device belongs to the field of shock wave therapeutic apparatus performance testing. Comprising a mass block, an upper platform, a pressure conduction structure, a three-jaw chuck, a linear bearing, a pressure sensor and a load, the three-jaw chuck is fixed to the upper platform, the pressure conduction structure is arranged on the upper side of the three-jaw chuck, the mass block is placed on the pressure conduction structure, the linear bearing is clamped by the three-jaw chuck, and a shock wave handle is vertically and slidably connected with the linear bearing. A round hole for the shock wave handle to penetrate through is formed in the center of the upper platform, the pressure sensor is arranged below the linear bearing, and the load is placed on the upper side of the pressure sensor. A laser displacement sensor is further fixed to the three-jaw chuck and used for detecting the vertical displacement of the shock wave handle. The three-jaw chuck clamps the linear bearing for centering, the shock wave handle does not need to be adjusted and aligned again when replaced, bias voltage of a load is avoided, measurement errors are reduced, and the detection precision is improved.

Description

Technical Field

[0001] The invention discloses a penetration depth test device for a shock wave therapy apparatus, belonging to the field of shock wave therapy apparatus performance testing, in particular to a penetration depth test device for a pneumatic ballistic shock wave therapy apparatus. Background Art

[0002] At present, shock wave therapy devices are widely used in rehabilitation treatment. More and more hospitals and rehabilitation centers in China are equipped with shock wave therapy devices to treat frozen shoulder, tendinitis, plantar fasciitis and other diseases. How to ensure the quality and safety of shock wave therapy devices in clinical treatment is an urgent problem to be solved, and its quality and performance testing equipment has a wide market.

[0003] When testing the penetration depth of the device, the existing shock wave penetration depth detection device directly clamps the shock wave therapy device handle through a clamp. After replacing the handle treatment head, it cannot be guaranteed that the treatment head is still in the same vertical line with the detection device, resulting in measurement errors. In order to avoid errors, measurement adjustments are required, which is time-consuming and laborious. Therefore, how to ensure that the replacement handle treatment head is still in the same straight line with the detection device is an urgent problem to be solved. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a penetration depth test device for a shock wave therapy instrument, which can solve the problem of still being on the same vertical line with the detection device after the handle is replaced.

[0005] The utility model adopts the following technical solution to solve the technical problem: a shock wave therapy instrument penetration depth testing device comprises a mass block, an upper platform, a pressure transmission structure, a three-jaw chuck, a linear bearing, a pressure sensor and a load, the three-jaw chuck is fixed on the upper platform, the pressure transmission structure is arranged on the upper side of the three-jaw chuck, the mass block is placed on the pressure transmission structure, the three-jaw chuck clamps the linear bearing, the shock wave handle is vertically slidably connected to the linear bearing, a circular hole for the shock wave handle to pass through is arranged at the center of the upper platform, the pressure sensor is arranged below the linear bearing, and the load is placed on the upper side of the pressure sensor.

[0006] Preferably, it also includes a shock wave handle tooling and an annular baffle, the shock wave handle tooling is arranged between the pressure conduction structure and the shock wave handle, the lower part of the shock wave handle tooling is provided with a concave cavity matching with the upper end of the shock wave handle, the upper end of the shock wave handle is arranged in the concave cavity, the annular baffle is arranged on the lower side of the circular hole, and the linear bearing is located on the upper side of the circular baffle.

[0007] Preferably, a laser displacement sensor is also fixed on the three-jaw chuck, and the laser displacement sensor is used to detect the vertical displacement of the shock wave handle.

[0008] Preferably, the pressure transmission structure includes a guide rail, a flange linear bearing and a loading plate, the guide rail is fixed on the three-jaw chuck, the loading plate is arranged on the upper side of the three-jaw chuck, the flange linear bearings are evenly distributed on the loading plate, and the flange linear bearings are cooperatively connected with the guide rail.

[0009] Preferably, a groove for placing the mass block is provided at the center of the loading plate.

[0010] Preferably, it also includes a lower platform, which is fixedly connected to the lower side of the upper platform by screws, and a horizontal hoof foot is arranged on the bottom side of the lower platform.

[0011] Preferably, it also includes a lifting platform, which is placed on the lower platform. The lifting platform is provided with a positioning groove, and the pressure sensor is placed in the positioning groove.

[0012] Preferably, a boss is fixed on the lifting platform, and the positioning groove is arranged on the boss.

[0013] Preferably, the three-jaw chuck is connected with a rotating handle for driving the three-jaw chuck to expand and contract.

[0014] Preferably, the upper platform is connected with a level adjustment mechanism.

[0015] Compared with the prior art, the technical solution has the following beneficial effects:

[0016] The utility model adopts a shock wave therapy instrument penetration depth test device. The three-jaw chuck clamps the linear bearing, and the shock wave handle is vertically slidably connected to the linear bearing, so that it is fixed in the center of the operating panel, coaxial with the mass block, pressure sensor and load. When the shock wave handle is replaced, there is no need to readjust the alignment center, avoid load bias, reduce measurement errors, and improve detection accuracy. The adjustable lifting platform can meet the measurement of shock wave handles of different lengths, and has stronger versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a penetration depth testing device of a shock wave therapy device.

[0018] Figure 2 It is a schematic diagram of the loading tray of the utility model.

[0019] Figure 3 It is a schematic diagram of the lifting platform of the utility model.

[0020] Among them: 1. mass block 2. guide rail 3. flange linear bearing 4. loading plate 5. shock wave handle tooling 6. handle 7. shock wave handle 8. three-jaw chuck 9. annular baffle 10. horizontal shoe foot 11. linear bearing 12. laser displacement sensor 13. upper platform 14. fixing nut 15. screw 16. load 17. pressure sensor 18. lifting platform 19. lower platform 20. processing system 21. positioning groove 22. groove 23. boss. DETAILED DESCRIPTION

[0021] Figures 1 to 3 It is the best embodiment of the utility model, and the following Figures 1 to 3 The utility model is further described.

[0022] Reference Figures 1 to 3 The penetration depth test device of the shock wave therapy device includes a mass block 1, a pressure transmission structure, a pressure test device, a centering structure, an upper platform 13, a lower platform 19, a load 16, a pressure sensor 17 and a processing system 20. The upper platform 13 is connected to the lower platform 19 by a screw 15 and a fixing nut 14. A horizontal hoof 10 is arranged on the bottom side of the lower platform 19 to adjust the lower platform 19 to keep it horizontal. The fixing nut 14 connecting the upper platform 13 and the lower platform 19 can adjust the horizontal angle of the upper platform 13. The centering structure includes a three-jaw chuck 8 and a rotating handle 6. The rotating handle 6 is installed on the lower side of the three-jaw chuck 8 and connected to the driving part of the three-jaw chuck 8. Turning the rotating handle 6 can clamp or loosen the three-jaw chuck 8. The three-jaw chuck 8 is fixed at the center position of the upper platform 13.

[0023] The pressure transmission structure includes a guide rail 2, a flange linear bearing 3 and a loading plate 4. The guide rail 2 is fixed on the three-jaw chuck 8. The loading plate 4 is arranged on the upper side of the three-jaw chuck 8 and is parallel to the three-jaw chuck 8. The loading plate 4 is installed on the guide rail 2. The loading plate 4 is equipped with three flange linear bearings 3 and can slide relative to the guide rail 2. The three guide rails 2 limit the loading plate 4 to move only in the vertical direction without deviation.

[0024] The pressure testing device includes a shock wave handle fixture 5, a shock wave handle 7, a linear bearing 11 and a laser displacement sensor 12. The handle end of the shock wave handle 7 is installed in the concave mold of the shock wave handle fixture 5. The main shaft of the shock wave handle 7 on the lower side cooperates with the linear bearing 11, and the main shaft of the shock wave handle 7 can slide relative to the linear bearing 11. A circular hole is set at the center position of the upper platform 13. The main shaft of the shock wave handle 7 is sleeved in the linear bearing and passes through the circular hole of the upper platform 13. The three-jaw chuck 8 clamps and fixes the linear bearing 11. The lower end of the linear bearing 11 is against the annular baffle 9. The linear bearing 11 cannot pass through the circular hole, but the main shaft of the shock wave handle 7 can pass through the circular hole. Due to the centering effect of the three-jaw chuck 8, the shock wave handle 7 is in a vertical state and is located at the center of the upper platform 13. The main shaft of the shock wave handle 7 passes through the circular hole, the treatment head contacts the load 16, the upper side of the shock wave handle fixture 5 contacts the loading plate 4 of the pressure transmission structure, and the shock wave handle fixture 5 is tightly matched with the shock wave handle 7 to prevent the protrusion at the handle end of the shock wave handle 7 from contacting the loading plate 4 and causing the center of gravity to shift. The laser displacement sensor 12 is fixed on the three-jaw chuck 8.

[0025] The lifting platform 18 is placed at the center position of the lower platform 19. A boss 23 is fixed on the lifting platform 18. A positioning groove 21 for positioning the pressure sensor 17 is set at the center position of the boss 23. The pressure sensor 17 is installed on the positioning groove 21. The load 16 is placed on the pressure sensor 17. The load 16 is made of gel material with a thickness of 15 mm and is aligned with the pressure sensor 17. The pressure sensor 17 detects the pressure exerted on the load 16.

[0026] The mass block 1 is placed on a carrier plate 4 of a pressure-conducting structure. A groove 22 for positioning the mass block 1 is arranged at the center of the carrier plate 4. The mass block 1 is 25 N. The pressure sensor 17 , the laser displacement sensor 12 and the shock wave handle 7 are connected to a processing system 20 .

[0027] Working process: Before the penetration depth test of the shock wave therapy device, turn on the shock wave host and the test system, and establish communication between the laser displacement sensor 12, the pressure sensor 17 and the processing system 20. Place the level ruler on the lower platform 19, adjust the level foot 10 to make the lower platform 19 level, place the level ruler on the upper platform 13, and adjust the fixing nut 14 to keep the upper platform 13 level.

[0028] Adjust the lifting platform 18 to a suitable height, and place a single load 16 directly above the pressure sensor 17. The material of the load 16 is gel material, and its performance is close to that of human tissue, which is closer to the actual working condition of the shock wave therapy device. At this time, slowly adjust the vertical position of the shock wave handle 7 so that the treatment head just touches the load 16. At this time, the processing system 20 will record the value L1 of the laser displacement sensor 12, and L1 is the initial position.

[0029] Place the mass block 1 in the groove 22 on the loading plate 4. Under the action of gravity, the loading plate 4, the handle fixture 5 and the shock wave handle 7 slide vertically downward to compress the load 16. The static post-processing system 20 will record the value L2 of the laser displacement sensor 12. After the recording is completed, the post-processing system 20 calculates the straight-line distance d1=15-(L1-L2) from the front end of the shock wave handle 7 to the pressure sensor when a single load 16 is reached.

[0030] At this time, after fixing the device, the output pressure of the shock wave therapy device is set to the maximum, the striking mode is set to a single strike, and the post-strike processing system 20 records the value F1 detected by the pressure sensor 17.

[0031] Finally, the single load 16 is replaced with two loads 16, and the above steps are repeated. The processing system 20 calculates the straight-line distance d2 from the front end of the shock wave handle 7 to the pressure sensor 17 when there are two loads 16, and the processing system 20 records the value F2 detected by the pressure sensor 17 under the two loads 16.

[0032] According to the pharmaceutical industry standard of the People's Republic of China YY 0950-2015, the formula for calculating the penetration depth of shock wave therapy device is as follows:

[0033]

[0034] Where:

[0035] d 50% — penetration depth;

[0036] d1—vertical distance from the treatment head to the piezoelectric sensor under a simulated load;

[0037] d2—vertical distance from the treatment head to the piezoelectric sensor under two simulated loads;

[0038] F1—pressure under a simulated load;

[0039] F2—pressure under two simulated loads;

[0040] Finally, the processing system 20 automatically calculates the penetration depth according to the penetration depth calculation formula.

[0041] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A shock wave therapy instrument penetration depth test device, characterized in that: The invention comprises a mass block (1), an upper platform (13), a pressure transmission structure, a three-jaw chuck (8), a linear bearing (11), a pressure sensor (17) and a load (16); the three-jaw chuck (8) is fixed on the upper platform (13); the pressure transmission structure is arranged on the upper side of the three-jaw chuck (8); the mass block (1) is placed on the pressure transmission structure; the three-jaw chuck (8) clamps the linear bearing (11); the shock wave handle (7) is vertically slidably connected to the linear bearing (11); a circular hole for the shock wave handle (7) to pass through is arranged at the center of the upper platform (13); the pressure sensor (17) is arranged below the linear bearing (11); and the load (16) is placed on the upper side of the pressure sensor (17).

2. A shock wave therapy device penetration depth test device according to claim 1, characterized in that: It also comprises a shock wave handle tooling (5) and an annular baffle (9), wherein the shock wave handle tooling (5) is arranged between the pressure conduction structure and the shock wave handle (7), a concave cavity matching the upper end of the shock wave handle (7) is provided at the lower part of the shock wave handle tooling (5), the upper end of the shock wave handle (7) is arranged in the concave cavity, the annular baffle (9) is arranged at the lower side of the circular hole, and the linear bearing (11) is located at the upper side of the annular baffle (9).

3. A shock wave therapy device penetration depth test device according to claim 1, characterized in that: A laser displacement sensor (12) is also fixed on the three-jaw chuck (8), and the laser displacement sensor (12) is used to detect the vertical displacement of the shock wave handle (7).

4. A shock wave therapy device penetration depth test device according to claim 1, characterized in that: The pressure transmission structure comprises a guide rail (2), a flange linear bearing (3) and a loading plate (4); the guide rail (2) is fixed on a three-jaw chuck (8); the loading plate (4) is arranged on the upper side of the three-jaw chuck (8); the flange linear bearings (3) are evenly distributed on the loading plate (4); and the flange linear bearings (3) are cooperatively connected to the guide rail (2).

5. A shock wave therapy device penetration depth test device according to claim 4, characterized in that: A groove (22) for placing the mass block (1) is provided at the center of the object carrier plate (4).

6. A shock wave therapy device penetration depth test device according to claim 1, characterized in that: It also includes a lower platform (19), which is fixedly connected to the lower side of the upper platform (13) through a screw rod (15), and a horizontal shoe foot (10) is arranged on the bottom side of the lower platform (19).

7. A shock wave therapy device penetration depth test device according to claim 5, characterized in that: It also includes a lifting platform (18), the lifting platform (18) is placed on the lower platform (19), a positioning groove (21) is provided on the lifting platform (18), and the pressure sensor (17) is placed in the positioning groove (21).

8. A shock wave therapy device penetration depth test device according to claim 7, characterized in that: A boss (23) is fixed on the lifting platform (18), and a positioning groove (21) is formed on the boss (23).

9. A shock wave therapy device penetration depth test device according to claim 1, characterized in that: The three-jaw chuck (8) is connected to a rotating handle (6) for driving the three-jaw chuck (8) to expand and contract.

10. A shock wave therapy device penetration depth test device according to claim 1, characterized in that: The upper platform (13) is connected to a level adjustment mechanism.

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