Torsion spring method magnetostrictive torque measurement and observation device and method
Through the torsion spring method magnetotor torque measurement and observation device, the rotation angle of the rotating torsion spring recorder disk is used and the magnetotor torque force is measured on the torque tester, which solves the torque of the implantable medical device under a static magnetic field in the prior art. The problem of the difficulty of observing changes has achieved more accurate test results and convenient operation.
Patent Information
- Application Number
- CN202411341980.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2024-12-27
AI Technical Summary
In the prior art, the torque changes of implantable medical devices under static magnetic fields are difficult to easily observe, and the test accuracy is not high and the structure is complex, resulting in large torque measurement errors and inconvenient observation.
The magnetotor torque measurement and observation device is adopted by the torsion spring method, including the base plate, transmission unit mechanism, rotary disk mechanism and locking mechanism, and the magnetotor torque is recorded by the rotation angle of the supporting object disk by the rotary torsion spring, and after leaving the magnetic field, the magnetotor torque is recorded in the torque tester. The magnetotor torque force is directly measured on it, and the periscope is used for easy observation.
It realizes more accurate torque force testing under static magnetic fields, reduces transmission shaft friction, improves test accuracy, simplifies operation, and avoids the inconvenience of testers entering the magnetic field to observe.
Smart Images
Figure CN119197835A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of medical equipment, and in particular relates to a torsion spring method magneto-torque measurement and observation device and method. Background Art
[0002] In recent years, implantable devices have become increasingly popular, and their market acceptance has increased year by year. Since implantable devices will generate magnetotorque in the static magnetic field of magnetic resonance, which may cause harm to patients with implanted devices during examination, it is very important to test the magnetotorque of implantable devices.
[0003] There are many test methods proposed internationally for the magnetic resonance compatibility test of medical implants. There is a low-friction surface method, which is achieved by placing the implant to be tested on a low-friction non-metallic, non-conductive surface as close to the isocenter of the magnetic resonance system as possible. There is a pulley method, which determines the maximum magnetic torque of the device by using a low-friction pulley connected to a rotating platform. There is a suspension method, which is a qualitative method. The implant to be tested is suspended in the magnetic resonance system by a rope, and then the implant to be tested is rotated at a determined angle increment while observing the movement or rotation of the implant to be tested. There is also a torsion spring method, which uses a torsion pendulum to determine the magnetic torque of the implant to be tested.
[0004] At present, the existing test methods are relatively cumbersome, low in precision and inconvenient for test observation. In practical applications, the existing structures are complex and the measurement errors of large torques are relatively large. The calculation of torque force is too simple, resulting in low precision. At the same time, it is inconvenient to observe when the test device is placed in the middle of the magnetic resonance static magnetic field, and personnel need to enter the static magnetic field back and forth for observation, which causes inconvenience in observation. Summary of the invention
[0005] The purpose of the present invention is to solve the problem in the prior art that the torque changes of implantable medical devices under static magnetic fields are difficult to be conveniently observed, and to provide a torsion spring method magneto-torque measurement and observation device and method, so as to use a simpler structure, a more accurate torsion spring design, and a more convenient observation device to achieve more accurate torque force testing of implantable medical devices under static magnetic fields.
[0006] The specific technical solutions adopted by the present invention are as follows:
[0007] 1. A torsion spring method magneto-torque measurement and observation device
[0008] It includes a base plate, a transmission unit mechanism, a rotating disk mechanism and a locking mechanism;
[0009] The transmission unit mechanism is installed on the base plate, and the transmission unit mechanism and the rotating disk mechanism are synchronously rotated and connected; the transmission unit mechanism includes two main transmission unit components, namely the first main transmission unit component and the second main transmission unit component, and the first main transmission unit component and the second main transmission unit component are meshed for transmission.
[0010] The rotating disk mechanism is installed on the transmission unit mechanism, and the magnetic object to be measured is placed on the rotating disk mechanism; the rotating disk mechanism includes a rotating disk and a loading disk; the rotating disk is installed on the upper end of the first main transmission unit component, the loading disk is movably mounted on the upper end of the second main transmission unit component, and the magnetic object to be measured is placed on the loading disk.
[0011] The locking mechanism is mounted on the first main transmission unit assembly of the transmission unit mechanism, and is used to lock and release the rotation action of the transmission unit mechanism on the object carrier.
[0012] The first main transmission unit assembly comprises a first bearing base, a first transmission shaft and a first transmission shaft gear; the first transmission shaft is arranged vertically and the lower end is mounted on the bottom plate through the first bearing base, the upper end of the first transmission shaft is coaxially fixedly sleeved with a rotating disk, and the middle part of the first transmission shaft is coaxially fixedly sleeved with the first transmission shaft gear;
[0013] The second main transmission unit assembly includes a second bearing base, a second transmission shaft, a second transmission shaft gear, a shaft connecting piece and a rotating torsion spring; the second transmission shaft is arranged vertically and the lower end is mounted on the base plate through the second bearing base, the upper end of the second transmission shaft is coaxially movably mounted with a shaft connecting piece, and the middle part of the second transmission shaft is coaxially fixedly sleeved with a second transmission shaft gear; a support shaft is coaxially sleeved inside the rotating torsion spring, the lower end of the support shaft is coaxially movably connected to the upper end of the second transmission shaft via the shaft connecting piece, and the upper end of the support shaft is movably sleeved connected to the loading plate of the rotating plate mechanism.
[0014] In a specific implementation, the form of the shaft connection member is not limited, and a coupling or the like may be used. The coupling may have a groove at the upper end into which the rotating torsion spring can be inserted.
[0015] The first transmission shaft gear of the first main transmission unit assembly and the second transmission shaft gear of the second main transmission unit assembly are meshed and transmitted.
[0016] The gear ratio of the direct meshing transmission between the first transmission shaft gear and the second transmission shaft gear is less than 1.
[0017] The transmission unit mechanism further comprises a secondary transmission unit assembly; the secondary transmission unit assembly is located between the first main transmission unit assembly and the second main transmission unit assembly, so that the first main transmission unit assembly and the second main transmission unit assembly are meshed and connected to each other through the secondary transmission unit assembly;
[0018] The secondary transmission unit assembly includes a third bearing base, a third transmission shaft and a third transmission shaft gear; the third transmission shaft is arranged vertically and the lower end is mounted on the base plate through the third bearing base, and a third transmission shaft gear is coaxially fixedly mounted in the middle of the third transmission shaft; the third transmission shaft gear includes a lower transmission shaft gear and an upper transmission shaft gear; the lower transmission shaft gear and the upper transmission shaft gear are respectively meshed with the first transmission shaft gear and the second transmission shaft gear for transmission.
[0019] There is no requirement for the gear ratio when the third transmission shaft gear is meshed with the first transmission shaft gear and the second transmission shaft gear respectively.
[0020] The gear ratio of the indirect meshing transmission between the first transmission shaft gear and the second transmission shaft gear is less than 1.
[0021] The rotating disk and the loading disk are both kept in a horizontal posture, and the disk surfaces of the rotating disk and the loading disk are provided with angle scales marked around the outer circumference; the torsion spring method magneto-torque measurement and observation device also includes a first pointer, a second pointer and two side panels; the two side panels are vertically mounted on both sides of the bottom plate, and the space between the two side panels is used to install the transmission unit mechanism, and the two side panels are provided with vertically opened mounting grooves, and the first pointer and the second pointer are respectively mounted on the mounting grooves of the two side panels, and the first pointer and the second pointer are both facing the rotating disk mechanism, pointing to the angle scale of the loading disk and the angle scale of the rotating disk respectively.
[0022] The torsion spring method magneto-torque measurement and observation device further comprises a rotation angle recording device, which is installed above the loading plate and the first pointer and is used to record the scale value on the loading plate pointed to by the first pointer.
[0023] The rotation angle recording device includes but is not limited to a periscope.
[0024] The transmission unit mechanism, the rotating disk mechanism, the locking mechanism, the first pointer and the second pointer are all made of nylon plastic; the bottom plate and the two side plates are all made of acrylic.
[0025] The locking mechanism includes a fixing support and a locking screw. One end of the fixing support is vertically fixed on a side plate close to the first main transmission unit assembly. The other end of the fixing support is provided with a through hole for the first transmission shaft of the first main transmission unit assembly to pass through. The locking screw is screwed on the side wall of the through hole of the fixing support.
[0026] 2. A method for measuring and observing magneto-torque using a torsion spring method, the steps are as follows:
[0027] 1) Place the magnetic object to be measured on the loading plate and loosen the locking screw of the locking mechanism;
[0028] 2) The transmission unit mechanism is driven to rotate by rotating the rotating disk, thereby driving the loading plate to rotate, so that the scale value of the first pointer pointing to the loading plate is zero;
[0029] 3) Tighten the locking screw of the locking mechanism to keep the transmission unit mechanism locked, and then place the torsion spring method magnetotorque measuring device in the magnetic field. The magnetic object to be measured is subjected to the magnetotorque of the magnetic field, thereby driving the rotation of the rotating torsion spring and the object carrier;
[0030] 4) Observe and record the scale value of the first pointer pointing to the loading plate through the periscope;
[0031] 5) After taking out the torsion spring magneto-torque measuring device from the magnetic field, remove the magnetic object to be measured, and then remove the object carrier, the rotating torsion spring and the shaft connecting member from the torsion spring magneto-torque measuring device in sequence;
[0032] 6) Install the shaft connector, the rotating torsion spring and the loading plate removed in step 5) on the test fixture of the torque tester;
[0033] 7) Rotate the loading plate installed in step 6) from the scale value of zero to the scale value recorded in step 3). The torque displayed on the torque tester is the magneto-induced torque exerted on the magnetic object under test in the magnetic field.
[0034] The step 4) specifically includes: fixing the periscope above the first pointer pointing to the loading plate, observing the scale value of the first pointer pointing to the loading plate through the periscope and manually recording the scale value.
[0035] The present invention provides a torsion spring method magneto-torque measurement and observation device and method, which can be used to observe the torque force generated by an implantable medical device or other test object under the static magnetic field of a magnetic resonance imaging (MRI). The present invention indirectly records the magneto-torque through the rotation angle of the object carrier supported by the torsion spring, and then directly measures the magneto-torque force with a torque tester. Compared with the prior art, this method has more accurate test results when testing the magneto-torque of an implantable medical device subjected to a large torque force.
[0036] Compared with the prior art, the present invention has the following beneficial effects:
[0037] 1. The present invention has made key improvements in structure. The shaft connector, rotating torsion spring and loading tray are detachable, while the structure other than the shaft connector, rotating torsion spring and loading tray is fixed, and each transmission shaft is only fixed at the bottom. Compared with the existing solution in which the transmission shaft is fixed both above and below, this structure has the advantage of greatly reducing the friction of the transmission shaft during the test, thereby reducing the torque. As a result, the entire device has more accurate test results and is more convenient to operate.
[0038] 2. The present invention has made improvements in the rotary torsion spring. The present invention has changed the outer surface of the rotary torsion spring, which no longer has the friction caused by the outer shell. At the same time, the rotary torsion spring design is more stable in structure and more accurate in large torque testing.
[0039] 3. The present invention optimizes the magnetic torque test method. Compared with the prior art, the present invention places the entire device in a static magnetic field. After the magnetic torque is loaded, the load plate will deflect. At this time, the scale value of the pointer is recorded. After leaving the magnetic field, the shaft connector, the rotating torsion spring and the load plate are placed on the torque tester and rotated to the same scale value as the previous pointer. The torque on the torque tester is the magnetic torque received by the device in the magnetic field.
[0040] 4. The present invention makes improvements in observing the rotation angle of the carrier plate under a static magnetic field. In the traditional method of observation, since the test device needs to be placed at the center of the static magnetic field, it is inconvenient for the tester to observe. The present invention proposes a periscope-type observation structure, which avoids the inconvenience of the tester entering the magnetic field environment for observation.
[0041] 5. In the embodiment of the present invention, the bottom plate and side plates are made of acrylic material, and the internal transmission shaft, pointer, etc. are made of nylon plastic. These two materials are easy to shape, low in cost, and not affected by magnetic fields. Compared with other materials, they have the advantages of convenient processing and low manufacturing difficulty. Moreover, the structures processed by these materials have smaller friction, which can obtain more accurate test results. BRIEF DESCRIPTION OF THE DRAWINGS
[0042] Figure 1 It is a structural schematic diagram of a torsion spring method magneto-torque measurement and observation device of the present invention;
[0043] Figure 2 Schematic diagram of the structure of a periscope.
[0044] In the figure: 1. bottom plate; 2. bearing base; 3. first transmission shaft; 4. second transmission shaft; 5. third transmission shaft; 6. rotating disk; 7. loading disk; 8. rotating torsion spring; 9. fixed support; 10. first pointer; 11. second pointer; 12. first transmission shaft gear; 13. second transmission shaft gear; 14. third transmission shaft gear; 15. side plate; 16. periscope; 17. locking screw; 18. shaft connector. DETAILED DESCRIPTION
[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0046] like Figure 1 As shown, the device includes a base plate 1, a transmission unit mechanism, a rotating disk mechanism and a locking mechanism.
[0047] The transmission unit mechanism is installed on the base plate 1, and the transmission unit mechanism and the rotating disk mechanism are synchronously rotated and connected; the transmission unit mechanism includes two main transmission unit components, namely the first main transmission unit component and the second main transmission unit component, and the first main transmission unit component and the second main transmission unit component are meshed for transmission.
[0048] The rotating disk mechanism is installed on the transmission unit mechanism, and a magnetic object to be measured is placed on one of the disks of the rotating disk mechanism; the rotating disk mechanism includes a rotating disk 6 and a loading disk 7; the rotating disk 6 is installed on the upper end of the first transmission shaft 3 of the first main transmission unit assembly, and the loading disk 7 is movably mounted on the upper end of the supporting shaft of the rotating torsion spring 8 of the second main transmission unit assembly, and the magnetic object to be measured is placed on the loading disk 7, and nothing is placed on the rotating disk 6.
[0049] The locking mechanism is mounted on the first main transmission unit assembly of the transmission unit mechanism, and is used to lock and release the rotation action of the transmission unit mechanism on the loading plate 7.
[0050] The first main transmission unit assembly includes a first bearing base 2, a first transmission shaft 3 and a first transmission shaft gear 12; the first transmission shaft 3 is arranged vertically and the lower end is mounted on the base plate 1 through the first bearing base 2, the upper end of the first transmission shaft 3 is coaxially fixed with a rotating disk 6, and the middle part of the first transmission shaft 3 is coaxially fixed with a first transmission shaft gear 12.
[0051] The second main transmission unit assembly includes a second bearing base 2, a second transmission shaft 4, a second transmission shaft gear 13, a shaft connecting member 18 and a rotating torsion spring 8; the second transmission shaft 4 is arranged vertically and the lower end is mounted on the base plate 1 through the second bearing base 2, the upper end of the second transmission shaft 4 is coaxially and movably mounted with a shaft connecting member 18, and the middle part of the second transmission shaft 4 is coaxially and fixedly sleeved with a second transmission shaft gear 13; a support shaft is coaxially sleeved inside the rotating torsion spring 8, the lower end of the support shaft is coaxially and movably mounted and connected with the upper end of the second transmission shaft 4 through the shaft connecting member 18, the upper end of the support shaft is movably sleeved and connected with the loading plate 7 of the rotating plate mechanism, the bottom end of the shaft connecting member 18 is detachably fixed to the second transmission shaft 4, the bottom end of the rotating torsion spring 8 is detachably fixed to the shaft connecting member 18, and when the second transmission shaft 4 is locked and cannot rotate, the rotating torsion spring 8 provides the loading plate 7 with the degree of freedom to rotate around the center plane of the plate surface.
[0052] In a specific implementation, the form of the shaft connection member 18 is not limited, and a coupling or the like may be adopted. The coupling may have a groove at the upper end into which the rotary torsion spring 8 can be inserted.
[0053] The first transmission shaft gear 12 of the first main transmission unit assembly and the second transmission shaft gear 13 of the second main transmission unit assembly are meshed and transmitted.
[0054] The gear ratio of the direct meshing transmission between the first transmission shaft gear 12 and the second transmission shaft gear 13 is less than 1.
[0055] The transmission unit mechanism also includes a secondary transmission unit assembly; the secondary transmission unit assembly is located between the first main transmission unit assembly and the second main transmission unit assembly, so that the first main transmission unit assembly and the second main transmission unit assembly are engaged and connected through the secondary transmission unit assembly.
[0056] The secondary transmission unit includes a third bearing base 2, a third transmission shaft 5 and a third transmission shaft gear 14; the third transmission shaft 5 is arranged vertically and the lower end is mounted on the base plate 1 through the third bearing base 2, and a third transmission shaft gear 14 is coaxially fixedly mounted in the middle of the third transmission shaft 5; the third transmission shaft gear 14 includes a lower transmission shaft gear and an upper transmission shaft gear; the lower transmission shaft gear and the upper transmission shaft gear are respectively meshed with the first transmission shaft gear 12 and the second transmission shaft gear 13 for transmission.
[0057] There is no requirement for the gear ratio when the third transmission shaft gear 14 is meshed with the first transmission shaft gear 12 and the second transmission shaft gear 13 .
[0058] The gear ratio of the indirect meshing transmission between the first transmission shaft gear 12 and the second transmission shaft gear 13 is less than 1.
[0059] The rotating disk 6 and the loading disk 7 are both kept in a horizontal posture, and the disk surfaces of the rotating disk 6 and the loading disk 7 are both provided with angle scales marked around the outer circumference.
[0060] The torsion spring method magneto-torque measurement and observation device also includes a first pointer 10, a second pointer 11 and two side panels 15; the two side panels 15 are symmetrically and vertically installed on both sides of the base plate 1, and the space between the two side panels 15 is used to install the transmission unit mechanism. The two side panels 15 have vertically opened mounting grooves, and the first pointer 10 and the second pointer 11 are respectively vertically and slidably installed on the mounting grooves of the two side panels 15. The first pointer 10 is installed on the mounting groove of the side panel 15 close to the loading plate 7, and the second pointer 11 is installed on the mounting groove of the side panel 15 close to the rotating plate 6, so that the height of the first pointer 10 and the second pointer 11 can be adjusted, which is convenient for realizing the pointing function of the first pointer 10 and the second pointer 11. The first pointer 10 and the second pointer 11 are both facing the rotating plate mechanism, pointing to the angle scale of the loading plate 7 and the angle scale of the rotating plate 6 respectively.
[0061] The torsion spring method magneto-torque measurement and observation device also includes a rotation angle recording device, which is installed above the carrier plate 7 and the first pointer 10 and is used to record the scale value on the carrier plate 7 pointed by the first pointer 10.
[0062] like Figure 2 As shown, the rotation angle recording device includes but is not limited to a periscope 16 .
[0063] The periscope 16 is made of non-metallic material, and a light source may be further installed on the periscope 16 to supplement the light source during observation.
[0064] The transmission unit mechanism, the rotating disk mechanism, the locking mechanism, the first pointer 10 and the second pointer 11 are all made of nylon plastic; the bottom plate 1 and the two side plates 15 are all made of acrylic material.
[0065] The locking mechanism includes a fixing support 9 and a locking screw 17. One end of the fixing support 9 is vertically cantilevered and fixed on a side plate 15 close to the first main transmission unit assembly. The other end of the fixing support 9 is provided with a through hole for the first transmission shaft 3 of the first main transmission unit assembly to pass through. The locking screw 17 is screwed on the side wall of the through hole of the fixing support 9. By controlling the screwing depth, the controllable locking of the relative rotation of the first transmission shaft 3 is achieved.
[0066] In practice, the magnetic object to be measured is placed on the object carrier 7, and the entire device is placed in a magnetic field. When the magnetic object to be measured is subjected to the magnetostrictive torque of the magnetic field, the object carrier 7 can be driven to rotate together with the rotational freedom provided by the rotating torsion spring 8. According to the characteristics of the rotating torsion spring 8, the rotation angle of the carrier 7 is positively correlated with the magnetostrictive torque exerted on the magnetic object to be measured. Therefore, by recording the rotation angle of the carrier 7, the magnetostrictive torque exerted on the object to be measured can be inferred.
[0067] However, the quantitative relationship between the rotation angle of the object carrier 7 and the magneto-torque force exerted on the magnetic object to be measured is difficult to be measured directly, and therefore needs to be measured by other methods.
[0068] The bottom end of the shaft connecting member 18 of the present invention is detachably fixed to the second transmission shaft 4, the bottom end of the rotating torsion spring 8 is detachably fixed to the shaft connecting member 18, and the top end of the rotating torsion spring 8 is movably fixed to the loading plate 7. When a magnetic field is added to the device, the magnetic object to be measured is subjected to a magneto-induced torque, and the rotating torsion spring 8 and the loading plate 7 rotate. The scale value on the loading plate 7 pointed by the first pointer 10 is recorded at this time, and then the shaft connecting member 18, the rotating torsion spring 8 and the loading plate 7 are removed from the second transmission shaft 4 in turn, and then the shaft connecting member 18, the rotating torsion spring 8 and the loading plate 7 are fixed in turn on the corresponding positions of the torque measuring instrument, and the loading plate 7 is controlled to rotate to the scale value recorded previously. The torque force displayed by the torque measuring instrument is the magneto-induced torque force exerted on the magnetic object to be measured in the magnetic field.
[0069] The magnetic field is provided by a magnetic resonance imaging (MRI) device.
[0070] It should be noted that since the entire observation device needs to be placed in the magnetic field environment of MRI, it is made of non-ferromagnetic materials to avoid the generation of torque in the magnetic field environment of the magnetic resonance device. In an embodiment of the present invention, the transmission unit mechanism, the rotating disk mechanism, the locking mechanism, the first pointer 10 and the second pointer 11 are all made of nylon plastic material, and the bottom plate 1 and the two side plates 15 are all made of acrylic material. These two materials are easy to shape, low in cost, and not affected by magnetic fields. Compared with other materials, they have the advantages of convenient processing and low manufacturing difficulty. In addition, the structures processed from these materials have smaller friction and can obtain more accurate test results.
[0071] The embodiments of the present invention and the steps thereof are as follows:
[0072] 1) Place the magnetic object to be measured on the loading plate 7 and loosen the locking screw 17 of the locking mechanism;
[0073] 2) The transmission unit mechanism is driven to rotate by rotating the rotating disk 6, thereby driving the loading tray 7 to rotate, so that the scale value of the first pointer 10 pointing to the loading tray 7 is zero;
[0074] 3) Tighten the locking screw 17 of the locking mechanism to keep the transmission unit mechanism locked, and then place the torsion spring method magneto-torque measuring device in the magnetic field. The magnetic object to be measured is subjected to the magneto-torque of the magnetic field, thereby driving the rotation of the rotating torsion spring 8 and the carrier plate 7;
[0075] 4) Observe and record the scale value of the first pointer 10 pointing to the loading tray 7 through the periscope 16;
[0076] 5) After taking out the torsion spring method magneto-torque measuring device from the magnetic field, remove the magnetic object to be measured, and then remove the loading plate 7, the rotating torsion spring 8 and the shaft connecting member 18 from the torsion spring method magneto-torque measuring device in sequence;
[0077] 6) Install the shaft connector 18, the rotary torsion spring 8 and the loading plate 7 removed in step 5) on the test fixture of the torque tester;
[0078] 7) Rotate the loading plate 7 installed in step 6) from the scale value of zero to the scale value recorded in step 3), and the torque displayed on the torque tester is the magneto-induced torque exerted on the magnetic object under test in the magnetic field.
[0079] When using the periscope 16 for observation, step 4) is specifically as follows:
[0080] Fix the periscope 16 above the first pointer 10 pointing to the loading tray 7, observe the scale value of the first pointer 10 pointing to the loading tray 7 through the periscope 16 and manually record the scale value;
[0081] The present invention provides a torsion spring method magnetic torque force measurement observation device and method, which can be used to observe the torque force generated by the implanted medical device and other objects used in magnetic resonance detection under a static magnetic field, because when the implanted medical device rotates due to the torque force in the magnetic field environment of magnetic resonance, it may cause harm to the patient. Therefore, the present invention intends to use a simpler structure, a more accurate torsion spring design, and a more convenient observation device to solve the more accurate torque force test of implanted medical devices under a static magnetic field.
[0082] Compared with the prior art, the present invention has more accurate test results when testing the magnetotorque of an implantable medical device subjected to a large torque.
[0083] The above-described embodiments are only some preferred implementations of the present invention, but are not intended to limit the present invention. A person skilled in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.
Claims
1. A torsion spring method magneto-torque measurement and observation device, characterized in that: It comprises a base plate (1), a transmission unit mechanism, a rotating disk mechanism and a locking mechanism; The transmission unit mechanism is mounted on the base plate (1), and the transmission unit mechanism and the rotating disk mechanism are synchronously rotatably connected; the transmission unit mechanism comprises two main transmission unit components, namely a first main transmission unit component and a second main transmission unit component, and the first main transmission unit component and the second main transmission unit component are meshed for transmission; The rotating disk mechanism is mounted on the transmission unit mechanism, and a magnetic object to be measured is placed on the rotating disk mechanism; the rotating disk mechanism comprises a rotating disk (6) and a loading disk (7); the rotating disk (6) is mounted on the upper end of the first main transmission unit assembly, the loading disk (7) is movably mounted on the upper end of the second main transmission unit assembly, and the magnetic object to be measured is placed on the loading disk (7); The locking mechanism is mounted on the first main transmission unit assembly of the transmission unit mechanism and is used to lock and release the rotation action of the transmission unit mechanism on the object carrier (7).
2. The torsion spring method magneto-torque measurement and observation device according to claim 1, characterized in that: The first main transmission unit assembly comprises a first bearing base, a first transmission shaft (3) and a first transmission shaft gear (12); the first transmission shaft (3) is arranged vertically and the lower end is mounted on the bottom plate (1) through the first bearing base; the upper end of the first transmission shaft (3) is coaxially fixedly sleeved with a rotating disk (6); the middle part of the first transmission shaft (3) is coaxially fixedly sleeved with the first transmission shaft gear (12); The second main transmission unit assembly comprises a second bearing base, a second transmission shaft (4), a second transmission shaft gear (13), a shaft connecting piece (18) and a rotary torsion spring (8); the second transmission shaft (4) is arranged vertically and the lower end is mounted on the bottom plate (1) through the second bearing base, the upper end of the second transmission shaft (4) is coaxially movably mounted with a shaft connecting piece (18), and the middle part of the second transmission shaft (4) is coaxially fixedly sleeved with the second transmission shaft gear (13); a support shaft is coaxially sleeved inside the rotary torsion spring (8), the lower end of the support shaft is coaxially movably mounted and connected to the upper end of the second transmission shaft (4) through the shaft connecting piece (18), and the upper end of the support shaft is movably sleeved and connected to the loading plate (7) of the rotary plate mechanism; The first transmission shaft gear (12) of the first main transmission unit assembly and the second transmission shaft gear (13) of the second main transmission unit assembly are meshed for transmission.
3. The torsion spring method magneto-torque measurement and observation device according to claim 2, characterized in that: The transmission unit mechanism further comprises a secondary transmission unit assembly; the secondary transmission unit assembly is located between the first main transmission unit assembly and the second main transmission unit assembly, so that the first main transmission unit assembly and the second main transmission unit assembly are meshed and connected to each other through the secondary transmission unit assembly; The secondary transmission unit assembly comprises a third bearing base, a third transmission shaft (5) and a third transmission shaft gear (14); the third transmission shaft (5) is arranged vertically and the lower end is mounted on the base plate (1) through the third bearing base, and a third transmission shaft gear (14) is coaxially fixedly sleeved on the middle part of the third transmission shaft (5); the third transmission shaft gear (14) comprises a lower transmission shaft gear and an upper transmission shaft gear; the lower transmission shaft gear and the upper transmission shaft gear are respectively meshed with the first transmission shaft gear (12) and the second transmission shaft gear (13) for transmission.
4. The torsion spring method magneto-torque measurement and observation device according to claim 2, characterized in that: The rotating disk (6) and the loading disk (7) are both kept in a horizontal posture, and the rotating disk (6) and the loading disk (7) are both provided with angle scales marked around the outer circumference. The torsion spring method magneto-torque measurement and observation device also includes a first pointer (10), a second pointer (11) and two side plates (15); the two side plates (15) are vertically mounted on both sides of the base plate (1); the space between the two side plates (15) is used to mount a transmission unit mechanism; the two side plates (15) have vertically opened mounting grooves; the first pointer (10) and the second pointer (11) are respectively mounted on the mounting grooves of the two side plates (15); the first pointer (10) and the second pointer (11) are both oriented toward the rotating disk mechanism, and point to the angle scale of the loading disk (7) and the angle scale of the rotating disk (6) respectively.
5. The torsion spring method magneto-torque measurement and observation device according to claim 4, characterized in that: The torsion spring method magneto-torque measurement and observation device also includes a rotation angle recording device, which is installed above the loading plate (7) and the first pointer (10) and is used to record the scale value on the loading plate (7) pointed by the first pointer (10).
6. The torsion spring method magneto-torque measurement and observation device according to claim 5, characterized in that: The rotation angle recording device includes but is not limited to a periscope (16).
7. The torsion spring method magneto-torque measurement and observation device according to claim 5, characterized in that: The transmission unit mechanism, the rotating disk mechanism, the locking mechanism, the first pointer (10) and the second pointer (11) are all made of nylon plastic material, and the bottom plate (1) and the two side plates (15) are all made of acrylic material.
8. The torsion spring method magneto-torque measurement and observation device according to claim 1, characterized in that: The locking mechanism comprises a fixing support (9) and a locking screw (17); one end of the fixing support (9) is vertically fixed on a side plate (15) close to the first main transmission unit assembly; the other end of the fixing support (9) is provided with a through hole for a first transmission shaft (3) of the first main transmission unit assembly to pass through; and the locking screw (17) is screwed on a side wall of the through hole of the fixing support (9).
9. A method for measuring and observing magneto-torque using a torsion spring method using the device described in any one of claims 1 to 8, characterized in that: The steps are as follows: 1) Place the magnetic object to be measured on the loading plate (7) and loosen the locking screw (17) of the locking mechanism; 2) driving the transmission unit mechanism to rotate by rotating the rotating disk (6), thereby driving the object carrier (7) to rotate, so that the scale value of the first pointer (10) pointing to the object carrier (7) is zero; 3) tightening the locking screw (17) of the locking mechanism to keep the transmission unit mechanism in a locked state, and then placing the torsion spring method magneto-torque measuring device in a magnetic field, so that the magnetic object to be measured is subjected to the magneto-torque of the magnetic field, thereby driving the rotation of the rotating torsion spring (8) and the object carrier (7); 4) observing and recording the scale value of the first pointer (10) pointing to the loading plate (7) through the periscope (16); 5) After taking the torsion spring method magneto-torque measuring device out of the magnetic field, remove the magnetic object to be measured, and then remove the object carrier (7), the rotating torsion spring (8) and the shaft connecting member (18) from the torsion spring method magneto-torque measuring device in sequence; 6) Install the shaft connecting member (18), the rotating torsion spring (8) and the loading plate (7) removed in step 5) together on the test fixture of the torque tester; 7) Rotate the object carrier (7) installed in step 6) from the scale value of zero to the scale value recorded in step 3), and the torque displayed on the torque tester is the magneto-induced torque exerted on the magnetic object under test in the magnetic field.
10. The method for measuring and observing magneto-torque by torsion spring method according to claim 9, characterized in that: The step 4) is specifically as follows: The periscope (16) is fixed above the position where the first pointer (10) points to the loading tray (7), and the scale value where the first pointer (10) points to the loading tray (7) is observed through the periscope (16) and the scale value is manually recorded.