A transcranial magnetic stimulation device

Abstract

The present invention discloses a transcranial magnetic stimulator, which belongs to the technical field of medical devices. It includes: a circular hole is provided on a substrate; a first rotating ring is rotatably installed in the circular hole of the substrate; a circular hole arranged eccentrically relative to the axis of the first rotating ring is provided on the first rotating ring; a first driving mechanism is installed on the substrate, which is used to control the first rotating ring to rotate around the circular hole of the substrate; a second rotating ring is rotatably installed in the circular hole of the first rotating ring; a circular hole arranged eccentrically relative to the axis of the second rotating ring is provided on the second rotating ring; a second driving mechanism is installed on the first rotating ring, which is used to control the second rotating ring to rotate around the circular hole of the first rotating ring; a shaft cylinder is rotatably installed in the circular hole of the second rotating ring; a magnetic head is installed at the lower end of the shaft cylinder. The present invention realizes the flexible movement of the magnetic head on a two-dimensional plane through a two-stage rotating ring, which greatly increases the flexibility and accuracy during treatment, helps to achieve more accurate and personalized treatment, and improves the treatment effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a transcranial magnetic stimulator. Background Art

[0002] In the field of medical treatment, transcranial magnetic stimulation (TMS) as a non-invasive neuromodulation technology has been widely used in the diagnosis and treatment of various neurological diseases. This technology acts on the cerebral cortex through changes in the magnetic field, inducing neuronal depolarization, thereby achieving the purpose of regulating brain function.

[0003] However, the traditional transcranial magnetic stimulator has some shortcomings in the control of the magnetic head:

[0004] Traditional equipment often adopts a fixed or relatively simple mechanical structure, which limits the flexibility and accuracy of the magnetic head during movement and makes it difficult to meet complex treatment needs. First, the movement range of the magnetic head of a traditional transcranial magnetic stimulator is limited. It can usually only move along a straight line or a simple circular trajectory, which is inconvenient to adjust and difficult to cover a wide treatment area, thus limiting the improvement of the treatment effect. Second, the magnetic head does not fit the patient's head well enough. Due to the complexity of the head curve and the tiny movements during treatment, traditional equipment often finds it difficult to maintain stable contact, affecting the stability and continuity of the treatment. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, the present invention provides a transcranial magnetic stimulator.

[0006] The present invention adopts the following technical solution: a transcranial magnetic stimulator, including a host computer and a magnetic head, and also includes:

[0007] A substrate, wherein a circular hole is formed on the substrate;

[0008] A first slewing ring is rotatably mounted in the circular hole of the base plate; the first slewing ring is provided with a circular hole eccentrically arranged relative to the axis of the first slewing ring;

[0009] A first driving mechanism is mounted on the base plate and is used to control the first rotary ring to rotate around the circular hole of the base plate;

[0010] A second slewing ring is slewingly mounted in the circular hole of the first slewing ring; the second slewing ring is provided with a circular hole eccentrically arranged relative to the axis of the second slewing ring;

[0011] A second driving mechanism is installed on the first slewing ring and is used to control the second slewing ring to rotate around the circular hole of the first slewing ring;

[0012] The shaft cylinder is rotatably mounted in the circular hole of the second slewing ring; the magnetic head is mounted at the lower end of the shaft cylinder.

[0013] Furthermore, a limiting mechanism for limiting the rotation of the shaft cylinder relative to the base plate is installed on the base plate.

[0014] The limiting mechanism comprises:

[0015] A telescopic rod, the telescopic rod comprising a cylinder and a rod body slidably sleeved in the cylinder; a pair of retaining rings are fixed on the rod body;

[0016] An articulated seat is fixed on the lower side of the base plate; one end of the cylinder is hinged to the articulated seat;

[0017] The limiting ear plate is fixed on the side wall of the shaft cylinder; the limiting ear plate is slidably sleeved on the rod body between the two retaining rings.

[0018] The first driving mechanism comprises:

[0019] An outer gear ring is rotatably mounted in the circular hole of the base plate and coincides with the axis of the circular hole of the base plate;

[0020] A rotary driver, fixed on the base plate, used for driving the outer teeth to rotate around the axis of the circular hole of the base plate;

[0021] A plurality of floating connecting members are fixedly connected between the outer gear ring and the first slewing ring and are evenly distributed around the axis of the circular hole of the base plate.

[0022] The inner wall of the circular hole of the substrate is provided with a circle of inner recessed grooves, and the upper surface of the substrate is provided with mounting holes connected to the inner recessed grooves;

[0023] The outer gear ring is rotatably mounted in the inner sink groove of the base plate;

[0024] The rotary drive is fixed at the mounting hole position on the base plate, and a driving gear is fixed at the output end of the rotary drive; the driving gear is located in the mounting hole, and the driving gear is meshed with the outer gear ring in the inner sink groove.

[0025] The floating connection comprises:

[0026] A connecting shaft, one end of which is fixed on the inner wall of the outer gear ring; an outer groove is formed on the outer wall of the first rotary ring, and the other end of the connecting shaft extends into the outer groove;

[0027] A connecting seat is fixed in the outer groove of the first slewing ring; a vertical sliding groove is provided on the connecting seat, and one end of the connecting shaft located in the outer groove is slidably installed in the sliding groove;

[0028] The upper spring sheet and the lower spring sheet are symmetrically mounted on the upper and lower sides of the connecting seat, and the upper spring sheet and the lower spring sheet abut against the upper and lower sides of the connecting shaft.

[0029] A bearing is installed between the shaft cylinder and the circular hole of the second rotating ring; a cover plate is fixed to the upper end of the shaft cylinder, and a threading tube is fixed to the axis of the cover plate; the cable of the magnetic head passes through the shaft cylinder, the cover plate, and the threading tube and is connected to the host computer.

[0030] A connector for connecting with an external bracket is fixed on the upper side of the substrate.

[0031] The connector comprises a flange seat fixed on a base plate; a flange plate is fixed on the flange seat.

[0032] The beneficial effects of the present invention are:

[0033] The two-stage rotating ring enables the magnetic head to move flexibly on a two-dimensional plane; the first rotating ring and the second rotating ring are controlled by their own driving mechanisms, so that the magnetic head can move along a preset trajectory, greatly increasing the flexibility and accuracy of treatment; the design of the eccentric circular hole makes the moving range of the magnetic head not limited to a straight line or a simple arc, but can cover a larger circular area, improving the coverage and effect of treatment; the magnetic head can move slowly and accurately to the position required for treatment, which helps to achieve more accurate and personalized treatment and improve the treatment effect;

[0034] The design of the floating connection structure allows the first and second rotating rings to have a certain amount of floating deflection during the rotation process, thereby ensuring that the magnetic head can better fit the curved surface of the patient's head, reducing discomfort during treatment and improving patient comfort; the floating connection can also compensate for deviations caused by the patient's head movement or posture changes to a certain extent, maintaining the stability and continuity of treatment; better fit means that magnetic stimulation can act on the target area more accurately, thereby further improving the treatment effect;

[0035] A bearing is installed between the shaft cylinder and the second rotating ring, and a limit mechanism is set so that the shaft cylinder can remain relatively stable during rotation and can only rotate slightly within a certain range, avoiding the problem of unstable head position caused by excessive rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 The present invention is a stereoscopic diagram of a transcranial magnetic stimulator.

[0038] Figure 2 This is a front view of a transcranial magnetic stimulator of the present invention.

[0039] Figure 3 The figure is a top view of a transcranial magnetic stimulator according to the present invention.

[0040] Figure 4 for Figure 3 Center AA view.

[0041] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0042] Figure 6 This is a three-dimensional diagram of the present invention after the substrate, the first rotating ring and the second rotating ring are hidden.

[0043] Figure 7 It is an exploded view of the base plate, the first slewing ring and the second slewing ring in the present invention.

[0044] Figure 8 A perspective view of a floating connector.

[0045] Fig. 9 It is a schematic diagram of the assembly structure of the limiting mechanism and the shaft cylinder.

[0046] Description of reference numerals: 1, substrate; 11, inner sink; 12, mounting hole;

[0047] 2. First slewing ring; 21. External sink;

[0048] 3. First driving mechanism; 31. External gear ring; 32. Rotary driver; 321. Driving gear; 33. Floating connecting member; 331. Connecting shaft; 332. Connecting seat; 3321. Sliding groove; 333. Upper spring piece; 334. Lower spring piece;

[0049] 4. Second slewing ring;

[0050] 5. Second driving mechanism;

[0051] 6. Shaft cylinder; 61. Bearing; 62. Cover plate; 63. Threading tube;

[0052] 7. Magnetic head;

[0053] 8. Limiting mechanism; 81. Telescopic rod; 811. Cylinder; 812. Rod body; 813. Stop ring; 82. Articulated seat; 83. Limiting ear plate;

[0054] 9. Connector; 91. Flange seat; 92. Flange. DETAILED DESCRIPTION

[0055] 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.

[0056] Embodiment 1:

[0057] like Figures 1 to 4 As shown, the present invention provides a transcranial magnetic stimulator, which mainly includes a substrate 1, a first rotating ring 2, a second rotating ring 4 and a magnetic head 7. A circular hole is provided on the substrate 1. The first rotating ring 2 is rotatably installed in the circular hole of the substrate 1, and a circular hole eccentrically arranged relative to the axis of the first rotating ring 2 is provided on the first rotating ring 2, and the eccentricity is L1. The first driving mechanism 3 is installed on the substrate 1, and is used to control the first rotating ring 2 to rotate around the circular hole of the substrate 1. The second rotating ring 4 is rotatably installed in the circular hole of the first rotating ring 2, and a circular hole eccentrically arranged relative to the axis of the second rotating ring 4 is provided on the second rotating ring 4, and the eccentricity is L2. The second driving mechanism 5 is installed on the first rotating ring 2, and is used to control the second rotating ring 4 to rotate around the circular hole of the first rotating ring 2. The shaft cylinder 6 is installed in the circular hole of the second rotating ring 4, and the magnetic head 7 is installed at the lower end of the shaft cylinder 6.

[0058] The swivel mounting structure of the first swivel ring 2 and the base plate 1 and the swivel mounting structure of the second swivel ring 4 are the same as the swivel mounting structure of the first swivel ring 2 , and the structures of the first driving mechanism 3 and the second driving mechanism 5 are also the same.

[0059] Recombination Figure 6 and Figure 7 As shown, the rotary installation structure of the first rotary ring 2 and the base plate 1 is taken as an example:

[0060] The inner wall of the circular hole of the substrate 1 is provided with an inner groove 11, and the outer gear ring 31 is rotatably installed in the inner groove 11 of the substrate 1, and the axis of the outer gear ring 31 coincides with the axis of the circular hole of the substrate 1. The outer circumference of the first rotating ring 2 is connected to the inner circumference of the outer gear ring 31. When the first driving mechanism 3 drives the outer gear ring 31 to rotate, it can drive the first rotating ring 2 to rotate.

[0061] Recombination Figure 5 As shown, the first driving mechanism 3 is taken as an example:

[0062] The upper surface of the base plate 1 is provided with a mounting hole 12, one side of the mounting hole 12 is connected to the inner sink 11, and the teeth on the outer gear ring 31 extend into the mounting hole 12. The rotary driver 32 is fixed to the mounting hole 12 through a mounting flange, and the rotary driver 32 can be an electric motor. The output end of the rotary driver 32 is fixed with a driving gear 321, which is installed in the mounting hole 12, and the driving gear 321 is meshed with the outer gear ring 31 in the inner sink 11. The rotary driver 32 and the driving gear 321 can drive the outer gear ring 31 to rotate, thereby controlling the rotation of the first rotary ring 2.

[0063] Working principle:

[0064] The first driving mechanism 3 drives the first rotating ring 2 to rotate, thereby adjusting the position of the second rotating ring 4 in the first rotating ring 2. The trajectory of the second rotating ring 4 is a circle with a center of the first rotating ring 2 as the center and a radius of L1;

[0065] Similarly, the second driving mechanism 5 drives the second rotating ring 4 to rotate, thereby adjusting the positions of the shaft cylinder 6 and the magnetic head 7 in the second rotating ring 4. The trajectory of the magnetic head 7 is a circle with a radius of L2 and a center of the second rotating ring 4 as the center.

[0066] In this embodiment, L1=L2, and the area where the magnetic head 7 can actually move is a circle with a radius of L1+L2. The position of the magnetic head 7 can be adjusted arbitrarily in the area, and the magnetic head 7 can be controlled to move slowly to achieve an ideal treatment effect.

[0067] Embodiment 2:

[0068] Based on the above embodiment 1, Figures 4 to 8 As shown, in order to make the magnetic head 7 fit well with the patient's head and not affect the movement of the magnetic head 7, in this embodiment, a floating connection structure is adopted between the first rotating ring 2 and the base plate 1, and between the second rotating ring 4 and the first rotating ring 2. The floating connection structure between the first rotating ring 2 and the base plate 1 is the same as the floating connection structure between the second rotating ring 4 and the first rotating ring 2.

[0069] Take the connection between the first slewing ring 2 and the base plate 1 as an example:

[0070] The outer gear ring 31 and the first slewing ring 2 are connected by three evenly distributed floating connectors 33, and the three floating connectors 33 are evenly distributed around the axis of the outer gear ring 31. The floating connector 33 includes a connecting shaft 331 and a connecting seat 332. The outer wall of the first slewing ring 2 is provided with a circle of outer sinking grooves 21, and the connecting seat 332 is fixed in the outer sinking groove 21 of the first slewing ring 2. The outer end of the connecting shaft 331 is fixed on the inner wall of the outer gear ring 31, and the other end is connected to the connecting seat 332 in a floating manner. Specifically: a vertical slide groove 3321 is provided on the connection seat 332, and the inner end of the connection shaft 331 is slidably installed in the slide groove 3321; an upper spring sheet 333 and a lower spring sheet 334 are respectively fixed on the upper and lower sides of the connection seat 332, and the upper spring sheet 333 and the lower spring sheet 334 are against the upper and lower sides of the connection shaft 331; under the elastic force of the upper spring sheet 333 and the lower spring sheet 334, the connection shaft 331 can float up and down in the slide groove 3321. Then, the first rotating ring 2 as a whole has a floating deflection. Similarly, the second rotating ring 4 can also float relative to the first rotating ring 2, and finally ensure that the magnetic head 7 can better fit the patient's head and improve the treatment effect.

[0071] Embodiment three:

[0072] Based on the above embodiment 2, Figure 2 , Figure 6 and Fig. 9 As shown, in this embodiment, a bearing 61 is installed between the shaft cylinder 6 and the circular hole of the second rotating ring 4, and the shaft cylinder 6 can rotate relative to the second rotating ring 4. A limiting mechanism 8 is installed on the lower side of the base plate 1 to limit the rotation of the shaft cylinder 6; when the second rotating ring 4 rotates, the limiting mechanism 8 keeps the shaft cylinder 6 stable, so that the magnetic head 7 can only rotate slightly, thereby ensuring the stability of the magnetic head 7.

[0073] The limiting mechanism 8 includes a telescopic rod 81 mainly composed of a cylinder 811 and a rod 812. The cylinder 811 is hinged on the hinge seat 82, and the hinge seat 82 is fixed on the lower side of the base plate 1. The rod 812 is slidably mounted in the cylinder 811, and a pair of retaining rings 813 are fixed to the end of the rod 812 away from the hinge seat 82. A pair of limiting ear plates 83 are fixed on the side wall of the shaft cylinder 6, and the limiting ear plates 83 are slidably mounted on the rod 812 between the two retaining rings 813. When the shaft cylinder 6 is adjusted in position along with the second rotating ring 4, the telescopic rod 81 can be freely extended and retracted on the one hand to cooperate with the movement of the shaft cylinder 6; on the other hand, the angle of the telescopic rod 81 is limited by the hinge seat 82 and can only swing within a certain range, so that in the process of adjusting the position of the magnetic head 7, the magnetic head 7 can only rotate slightly.

[0074] A cover plate 62 is fixed to the upper end of the shaft cylinder 6, and a threading tube 63 is fixed to the axis of the cover plate 62. The cables required by the magnetic head 7 pass through the shaft cylinder 6, the cover plate 62, and the threading tube 63 and are connected to the host computer. The connector 9 includes a flange seat 91 fixed on the substrate 1, and a flange plate 92 is fixed on the flange seat 91. The flange plate 92 in the connector 9 is used to connect with the external bracket to support and adjust the position of the magnetic head 7.

[0075] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A transcranial magnetic stimulator, comprising a host computer and a magnetic head (7), characterized in that: Also includes: A substrate (1), wherein a circular hole is formed on the substrate (1); A first slewing ring (2) is rotatably mounted in the circular hole of the base plate (1); the first slewing ring (2) is provided with a circular hole which is eccentrically arranged relative to the axis of the first slewing ring (2); A first driving mechanism (3) is mounted on the base plate (1) and is used to control the first rotating ring (2) to rotate around the circular hole of the base plate (1); A second slewing ring (4) is slewingly mounted in the circular hole of the first slewing ring (2); the second slewing ring (4) is provided with a circular hole which is eccentrically arranged relative to the axis of the second slewing ring (4); A second driving mechanism (5) is mounted on the first slewing ring (2) and is used to control the second slewing ring (4) to rotate around the circular hole of the first slewing ring (2); The shaft cylinder (6) is rotatably mounted in the circular hole of the second slewing ring (4); the magnetic head (7) is mounted at the lower end of the shaft cylinder (6).

2. A transcranial magnetic stimulator according to claim 1, characterized in that: A limiting mechanism (8) for limiting the rotation of the shaft cylinder (6) relative to the base plate (1) is installed on the base plate (1).

3. A transcranial magnetic stimulator according to claim 2, characterized in that: The limiting mechanism (8) comprises: A telescopic rod (81), the telescopic rod (81) comprising a cylinder (811) and a rod body (812) slidably sleeved in the cylinder body (811); a pair of retaining rings (813) are fixed to the rod body (812); An articulated seat (82) is fixed to the lower side of the base plate (1); one end of the cylinder (811) is hinged to the articulated seat (82); The limiting ear plate (83) is fixed on the side wall of the shaft cylinder (6); the limiting ear plate (83) is slidably mounted on the rod body (812) between the two retaining rings (813).

4. A transcranial magnetic stimulator according to claim 1, characterized in that: The first driving mechanism (3) comprises: An outer toothed ring (31) is rotatably mounted in the circular hole of the base plate (1) and coincides with the axis of the circular hole of the base plate (1); A rotary driver (32) fixed on the base plate (1) and used for driving the outer gear ring (31) to rotate around the axis of the circular hole of the base plate (1); A plurality of floating connecting members (33) are fixedly connected between the outer gear ring (31) and the first slewing ring (2) and are evenly distributed around the axis of the circular hole of the base plate (1).

5. A transcranial magnetic stimulator according to claim 4, characterized in that: The inner wall of the circular hole of the base plate (1) is provided with a circle of inner recessed grooves (11), and the upper surface of the base plate (1) is provided with mounting holes (12) connected to the inner recessed grooves (11); The outer gear ring (31) is rotatably mounted in the inner sink groove (11) of the base plate (1); The rotary drive (32) is fixed at the position of the mounting hole (12) on the base plate (1), and a driving gear (321) is fixed to the output end of the rotary drive (32); the driving gear (321) is located in the mounting hole (12), and the driving gear (321) is meshed with an outer gear ring (31) in the inner sink groove (11).

6. A transcranial magnetic stimulator according to claim 4, characterized in that: The floating connection (33) comprises: A connecting shaft (331), one end of which is fixed to the inner wall of the outer gear ring (31); an outer groove (21) is formed on the outer wall of the first rotary ring (2), and the other end of the connecting shaft (331) extends into the outer groove (21); A connecting seat (332) is fixed in the outer sink groove (21) of the first slewing ring (2); a vertical slide groove (3321) is provided on the connecting seat (332), and one end of the connecting shaft (331) located in the outer sink groove (21) is slidably installed in the slide groove (3321); The upper spring sheet (333) and the lower spring sheet (334) are symmetrically mounted on the upper and lower sides of the connecting seat (332); the upper spring sheet (333) and the lower spring sheet (334) abut against the upper and lower sides of the connecting shaft (331).

7. A transcranial magnetic stimulator according to claim 1, characterized in that: A bearing (61) is installed between the shaft cylinder (6) and the circular hole of the second slewing ring (4); a cover plate (62) is fixed to the upper end of the shaft cylinder (6), and a threading tube (63) is fixed to the axis of the cover plate (62); and the cable of the magnetic head (7) passes through the shaft cylinder (6), the cover plate (62), and the threading tube (63) and is connected to the upper computer.

8. A transcranial magnetic stimulator according to claim 1, characterized in that: A connector (9) for connecting to an external bracket is fixed on the upper side of the base plate (1).

9. A transcranial magnetic stimulator according to claim 8, characterized in that: The connector (9) comprises a flange seat (91) fixed on the base plate (1); a flange plate (92) is fixed on the flange seat (91).

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