Performance tester of electric bone tissue operation equipment

Abstract

The utility model provides a performance tester for electric bone tissue operation equipment, which structurally comprises an industrial personal computer, a mounting plate, a torque rotating speed sensor and a brake, and the torque rotating speed sensor and the brake are positioned on the mounting plate. The industrial personal computer supplies power to the brake, and receives and displays a sensing signal of the torque rotating speed sensor; the two ends of the torque rotating speed sensor are connected with the brake and the cutter clamp through couplings respectively. According to the utility model, the magnetic powder brake is utilized to brake the tested equipment, and in the process, the torque and rotating speed sensor and the speedometer rod are utilized to detect the rotating speed and the torque so as to provide data support for evaluating the quality of the tested equipment; through selection of the output quantity of the magnetic powder brake and selection of equipment materials, the test requirements of high-rotating-speed or small-torque tested equipment are met, the adjustable cutter clamp matched with the size of a cutter of the electric bone tissue operation equipment is provided, and the application range of the tester is widened.

Description

Technical Field

[0001] This utility model relates to the field of performance testing technology for medical devices, and in particular to a performance tester for an electric bone tissue surgical device. Background Technology

[0002] Electric bone surgery devices are medical devices that provide mechanical power to perform bone surgery. Their structure includes a handpiece and a blade. The handpiece is the component that the operator holds, clamps, and controls the surgical blade to achieve the surgical purpose. The blade is the component that is clamped on the handpiece and is intended to be used to perform bone surgery.

[0003] According to the requirements of YY / T0752 and YY0904 for electric bone tissue surgical devices, the rated speed / frequency and output torque of the device must be tested to ensure that they meet the manufacturer's nominal values ​​and the actual surgical needs. Therefore, the testing party urgently needs an instrument to perform the above-mentioned performance tests on electric bone tissue surgical devices. Utility Model Content

[0004] The purpose of this invention is to provide a performance testing instrument for electric bone tissue surgical equipment to solve the problems mentioned above.

[0005] The technical solution of this utility model includes: a performance tester for an electric bone tissue surgical device, which includes an industrial control computer, a mounting plate, a torque and speed sensor and a brake. The torque and speed sensor and the brake are located on the mounting plate. The industrial control computer supplies power to the brake, receives and displays the sensing signal of the torque and speed sensor. The two ends of the torque and speed sensor are respectively connected to the brake and the blade holder through couplings.

[0006] Preferably, the torque-speed sensor has a speed measuring rod on the side opposite to the brake, and the speed measuring rod is used to detect speed signals that exceed the range of the torque-speed sensor.

[0007] Preferably, the brake includes a magnetic powder brake, wherein the maximum output torque of the magnetic powder brake is 0.1 N·m to 10 N·m.

[0008] Preferably, the industrial control computer is equipped with a programmable power supply and an output adjustment knob. The output adjustment knob can adjust the output of the programmable power supply to infinitely adjust the output torque of the magnetic powder brake.

[0009] Preferably, the tool holder includes a threaded sleeve and a threaded connector. The two ends of the threaded sleeve are respectively connected to the coupling and the threaded connector. The threaded connector is provided with a mounting hole of variable diameter.

[0010] Preferably, the screw connector includes a fixed ring and a movable flap tooth. The outer wall of the fixed ring is provided with threads, and the movable flap tooth is distributed circumferentially along the fixed ring and extends into the conical groove inside the threaded sleeve.

[0011] Preferably, the threaded connector includes a threaded sleeve II, a fixed ring, and a movable tooth. The threaded sleeve II is provided with an end plate, a tapered groove, an annular protrusion, and an internal thread in sequence along the axial direction. The fixed ring is provided with an annular groove that matches the annular protrusion. The movable tooth is distributed circumferentially along the fixed ring and extends into the tapered groove of the threaded sleeve II.

[0012] Preferably, the coupling is an aluminum coupling and the tool holder is an aluminum tool holder.

[0013] Preferably, the brake has a brake bracket at the bottom, the top of the brake bracket has a groove adapted to the shape of the brake, and the bottom is connected to the mounting plate by bolts.

[0014] Preferably, the bottom of the torque speed sensor is provided with a height adjustment support block, which is detachably mounted on the mounting plate to adjust the connecting shaft of the torque speed sensor to be at the same height as the connecting shaft of the brake.

[0015] The beneficial effects of this invention are as follows: it uses a magnetic powder brake to brake the device under test, and during this process, it uses a torque and speed sensor and a speed measuring rod to detect the speed and torque, providing data support for evaluating the quality of the device under test; by selecting the output of the magnetic powder brake and the material of the device, it adapts to the testing needs of devices with high speed or low torque, and provides an adjustable blade clamp that is compatible with the size of the blades of electric bone tissue surgical equipment, thus expanding the applicability of this testing instrument. Attached Figure Description

[0016] Figure 1 This is a front view of an embodiment of the present utility model;

[0017] Figure 2 This is a top view of an embodiment of the present utility model;

[0018] Figure 3 This is a structural diagram of one embodiment of the knife clamp in this utility model;

[0019] Figure 4 This is another embodiment of the knife clamp structure in this utility model.

[0020] In the picture:

[0021] 1. Industrial computer; 1-1. Programmable power supply; 1-2. Output adjustment knob; 1-3. Display panel;

[0022] 2. Mounting plate;

[0023] 3. Torque and speed sensor;

[0024] 4. Brake;

[0025] 5. Tool holder; 5-1. Threaded sleeve one; 5-2. Threaded connector; 5-21. Retaining ring; 5-21a. Annular groove; 5-22. Movable flap tooth; 5-23. Threaded sleeve two; 5-23a. End plate; 5-23b. Annular protrusion; 5-3. Mounting hole;

[0026] 6. Conical groove;

[0027] 7. Brake bracket; 7-1. Bracket;

[0028] 8. Adjust the support block height;

[0029] 9. Speed ​​measuring rod;

[0030] 10. L-shaped bracket;

[0031] 11. Couplings. Detailed Implementation

[0032] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical 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 utility model based on the specific circumstances.

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] Reference Appendix Figure 1-2 This embodiment provides a performance tester for an electric bone tissue surgical device, which includes an industrial control computer 1, a mounting plate 2, a torque and speed sensor 3, and a brake 4. The torque and speed sensor 3 and the brake 4 are located on the mounting plate 2. The industrial control computer 1 supplies power to the brake 4, receives and displays the sensing signal of the torque and speed sensor 3. The two ends of the torque and speed sensor 3 are connected to the brake 4 and the knife holder 5 respectively through a coupling 11.

[0037] To obtain a performance testing instrument with high control accuracy and stable operation, the aforementioned brake 4 can be a magnetic powder brake. A programmable power supply 1-1 and an output adjustment knob 1-2 are configured in the industrial control computer 1. The programmable power supply 1-1 is connected to the magnetic powder brake through a wire. The output quantity of the programmable power supply 1-1, i.e., the excitation current, is adjusted by the output adjustment knob 1-2 to achieve stepless adjustment of the output torque of the magnetic powder brake, thereby improving the torque testing accuracy.

[0038] The magnetic powder brakes on the market are usually disc-shaped. To adapt to their structural features, this embodiment also provides a brake bracket 7 on the mounting plate 2. The top of the brake bracket 7 is provided with a groove 7-1 that matches the shape and structure of the magnetic powder brake. The magnetic powder brake and the mounting plate 2 are connected by bolts, which facilitates assembly and maintenance.

[0039] The stall torque of the motor in different devices under test is different. If the torsional resistance generated by coupling 11 and magnetic powder brake is greater than the stall torque of the device under test, the device under test will enter a protection state and cannot start, thus making it impossible to test its speed and torque. Except for the magnetic particle brake, the torsional resistance generated by other structures is constant, affected by their own materials and connection methods. Although the output torque of the magnetic particle brake theoretically increases from zero, in reality, the design and assembly of the mechanical structure cause it to generate torsional resistance of varying degrees to the device under test when the excitation current is zero. Tests have shown that the minimum torsional resistance actually provided by the magnetic particle brake is usually proportional to its maximum output. The minimum torsional resistance provided by the magnetic particle brake with a larger maximum output value is greater than that provided by the magnetic particle brake with a smaller maximum output value. Therefore, the inventors selected the range of the magnetic particle brake and the materials of the coupling 11 and other structures according to the specifications of common electric bone tissue surgical equipment. The preferred options are: the magnetic particle brake with a maximum output torque of 0.1 N·m to 10 N·m, the coupling 11 made of aluminum, and the tool holder 5 made of aluminum. Aluminum is lightweight and can reduce torsional resistance.

[0040] Among them, a magnetic powder brake with a maximum output torque of 0.1 N·m is selected, which can enable normal testing of electric bone tissue surgical equipment with small stall torque (e.g., 5 mN·m to 10 mN·m) in this field; as the stall torque of the electric bone tissue surgical equipment increases, the model of the selected magnetic powder brake can be adapted to change.

[0041] In this embodiment, the torque and speed sensor 3 is connected to the industrial control computer 1 via a signal line. The display panel 1-3 on the industrial control computer 1 can display the torque and speed information sensed by the torque and speed sensor 3 in real time. It can also design working software adapted to it on the computer and use the working software to collect, record and store test data.

[0042] The display panel 1-3 of the industrial control computer 1 can also be set to display the output voltage, output current, output power, etc. of the programmable power supply 1-1, so that the test personnel can view and control it in real time.

[0043] The torque and speed sensor 3 and the magnetic powder brake have various constructions. When equipping this performance testing instrument, it should be ensured that the connecting shaft of the torque and speed sensor 3 and the connecting shaft of the magnetic powder brake are at the same height. For this purpose, this embodiment provides a height adjustment support block 8 on the mounting plate 2. The height adjustment support block 8 is detachably mounted on the mounting plate 2, and the torque and speed sensor 3 is mounted on the height adjustment support block 8. The height adjustment support block 8 can be configured as multiple blocks with fixed and unequal heights, which can be disassembled and replaced as needed. Alternatively, it can be configured as a single height-adjustable block, for example, through a scissor-type lifting block. No specific limitation is made here.

[0044] Commercially available torque-speed sensors 3 typically measure rotational speed using a slotted, light-transmitting disc on the rotor, in addition to the torque sensor. While this method is relatively accurate at low speeds, limitations in mechanical structure and assembly design lead to inaccurate readings when the speed exceeds a certain threshold. Therefore, this embodiment includes a speed measuring rod 9 on the side of the torque-speed sensor 3 facing away from the brake 4. The speed measuring rod 9 is mounted on the mounting plate 2 via an L-shaped bracket 10 and connected to an industrial control computer or PC via a signal cable. The speed measuring rod 9 detects rotational speed signals exceeding the accurate measurement range of the torque-speed sensor 3, thus meeting the performance testing requirements of high-speed electric bone tissue surgical equipment.

[0045] Because the diameter of the blades in electric bone tissue surgical devices is generally small, commercially available clamps used for holding and fixing large devices cannot stably hold them. Therefore, this embodiment also provides a blade clamp 5, including: a threaded sleeve 5-1 and a threaded connector 5-2. The two ends of the threaded sleeve 5-1 are respectively connected to a coupling 11 and the threaded connector 5-2. The threaded connector 5-2 is provided with a variable diameter mounting hole 5-3, which is used to install and clamp blades of different diameters. Before testing, one end of the blade is connected to a mobile phone, and the other end is inserted into the mounting hole 5-3. Then, the diameter of the mounting hole 5-3 is reduced to clamp the blade so that it cannot slip out.

[0046] In some embodiments (see Appendix) Figure 3 The screw connector 5-2 includes a fixed ring 5-21 and movable teeth 5-22. The outer wall of the fixed ring 5-21 is threaded, and the inner wall of the threaded sleeve 5-1 is provided with a tapered groove 6. The end of the tapered groove 6 near the screw connector 5-2 is a large diameter part, and the end near the screw connector 5-2 is provided with a thread adapted to the screw connector 5-2. The movable teeth 5-22 are distributed circumferentially along the fixed ring 5-21 and extend into the tapered groove 6 in the threaded sleeve 5-1. By changing the overlap between the fixed ring 5-21 and the threaded sleeve 5-1, the depth of the movable teeth 5-22 extending into the tapered groove 6 is changed, thereby adjusting the spacing of each movable tooth 5-22, that is, changing the diameter of the mounting hole 5-3, so that the tool is clamped.

[0047] In other embodiments (see Appendix) Figure 4The threaded connector 5-2 includes a threaded sleeve 5-23, a retaining ring 5-21, and a movable flap tooth 5-22. The threaded sleeve 5-23 is provided with an end plate 5-23a, a tapered groove 6, an annular protrusion 5-23b, and an internal thread in sequence along the axial direction. The outer wall of the threaded sleeve 5-1 is provided with a matching thread. The end plate 5-23a is provided with a through hole corresponding to the mounting hole 5-3 for passing through the tool. The retaining ring 5-21 is provided with an annular groove 5-21a that matches the annular protrusion 5-23b. The tapered groove 6 has a large diameter part on the side near the internal thread, and the inner diameter of the tapered groove 6 is smaller than the outer diameter of the structure formed by the movable flap tooth 5-22 in its natural state. The movable flap tooth 5-22 is distributed circumferentially along the retaining ring 5-21 and extends into the tapered groove 6 of the threaded sleeve 5-23. In this embodiment, the diameter of the mounting hole 5-3 is not affected by the overlap of the threaded sleeve 5-1 and the threaded sleeve 5-23, but is limited by the thickness of the fixing ring 5-21 and the movable tooth 5-22. The fixing ring 5-21 is engaged with the threaded sleeve 5-23 to prevent it from falling or shifting. The size of the tapered groove 6 in the threaded sleeve 5-23 is fixed. The larger the wall thickness of the movable tooth 5-22, the smaller the adjustable diameter of the mounting hole 5-3. By designing, manufacturing, and replacing different fixing rings 5-21 and movable teeth 5-22 connection structures, the clamping and fixing of tools with different diameters can be achieved.

[0048] The usage instructions for this performance tester include the following steps:

[0049] (1) Fix the cutting tool of the device under test on the tool holder 5 and start the device under test at the calibrated speed;

[0050] (2) Adjust the industrial control computer 1 to gradually increase the output torque of the brake 4, and read the speed of the tool detected by the torque speed sensor 3 and the speed measuring rod 9, and the output torque of the brake 4 detected by the torque speed sensor 3.

[0051] (3) Based on the test data of speed and output torque, the accuracy of the nominal data of the tested equipment is judged.

[0052] The beneficial effects of this utility model are as follows: a magnetic powder brake is used to brake the device under test. During this process, the speed and torque are detected by the torque and speed sensor 3 and the speed measuring rod 9, providing data support for evaluating the quality of the device under test; by selecting the output of the magnetic powder brake and the material of the device, the testing needs of high-speed or low-torque devices can be adapted, and an adjustable blade clamp 5 that is compatible with the size of the electric bone tissue surgical blade is provided, thus expanding the applicability of this tester.

[0053] The above are preferred embodiments of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A performance tester for an electric bone surgery device, characterized by, It comprises an industrial computer, a mounting plate, a torque and speed sensor and a brake, the torque and speed sensor and the brake are located on the mounting plate, the industrial computer supplies power for the brake, receives and displays the sensing signal of the torque and speed sensor; the two ends of the torque and speed sensor are connected with the brake and a tool clamp through a shaft coupling.

2. The performance tester for the electric bone surgical apparatus according to claim 1, wherein The side of the torque and speed sensor away from the brake is provided with a tachometer rod, which is used to detect the speed signal exceeding the range of the torque and speed sensor.

3. The performance tester for the electric bone surgical apparatus according to claim 1, wherein The brake comprises a magnetic powder brake, and the maximum output torque of the magnetic powder brake is 0.1N·m-10N·m.

4. The performance tester for electric bone surgical apparatuses according to claim 3, characterized in that, The industrial computer is provided with a program-controlled power supply and an output adjusting knob, the output adjusting knob can adjust the output of the program-controlled power supply, so as to perform stepless adjustment of the output torque of the magnetic powder brake.

5. The performance tester for electric bone surgery apparatuses according to any of claims 1-4, characterized in that, The tool clamp comprises a threaded sleeve one and a threaded part, the two ends of the threaded sleeve one are connected with the shaft coupling and the threaded part respectively, and the threaded part is provided with a mounting hole with variable diameter.

6. The performance tester for electric bone surgical apparatuses according to claim 5, characterized in that, The threaded part comprises a fixed ring and a movable petal, the outer wall of the fixed ring is provided with a thread, and the movable petal is distributed along the circumference of the fixed ring and extends into the tapered groove in the threaded sleeve one.

7. The performance tester for electric bone surgical apparatuses according to claim 5, characterized in that, The threaded part comprises a threaded sleeve two, a fixed ring and a movable petal, the threaded sleeve two is sequentially provided with an end plate, a tapered groove, an annular protrusion and an internal thread along the axial direction, the fixed ring is provided with an annular groove matched with the annular protrusion, and the movable petal is distributed along the circumference of the fixed ring and extends into the tapered groove of the threaded sleeve two.

8. The performance tester for electro-bone surgery apparatus according to any one of claims 1 to 4, 6 to 7, wherein The shaft coupling is an aluminum shaft coupling, and the tool clamp is an aluminum tool clamp.

9. The performance tester for electric bone surgical apparatuses according to claim 8, characterized in that, The bottom of the brake is provided with a brake support, the top of the brake support is provided with a supporting groove matched with the shape of the brake, and the bottom is connected with the mounting plate through bolts.

10. The performance tester for electric bone surgical apparatuses according to claim 8, characterized in that, The bottom of the torque and speed sensor is provided with an adjusting support block, which is detachably arranged on the mounting plate and used to adjust the connecting shaft of the torque and speed sensor to be level with the connecting shaft of the brake.

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