Direct drive module for OCT

Abstract

The present invention discloses a brushless DC direct-drive motor applied to an OCT detection device, including a permanent magnet, a multi-pole winding stator, a Hall sensor, a motor housing, a direct-drive motor driver and a rotating shaft; the permanent magnet is fixedly arranged on the rotating shaft, and a through hole penetrating the axis of the rotating shaft is arranged on the rotating shaft, and the rotating shaft includes a first rotating shaft end provided with a slip ring adapter interface and a second rotating shaft end provided with a catheter adapter interface; the multi-pole winding stator, the position sensor and the direct-drive motor driver are fixed on the motor bearing shaft, and the Hall sensor is used to detect the position of the magnetic poles of the permanent magnet arranged on the rotating shaft relative to the multi-pole winding stator, and control the current direction of each electrode in the multi-pole winding stator input through the direct-drive motor driver. The present invention also discloses an OCT detection device direct-drive module, an OCT detection device driving device and an OCT detection device integration using a brushless DC direct-drive motor. Using the technical solution provided by the present invention, the mechanical structure and electrical control are simple, which brings the advantages of convenient assembly and debugging.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a brushless DC direct drive motor used in OCT equipment, and an OCT direct drive module and OCT equipment manufactured using the brushless DC direct drive motor. Background Art

[0002] OCT (Optical Coherence tomography) medical clinical application equipment needs to be equipped with a catheter probe. From the working principle of the probe, the infrared laser of the detection arm needs to be driven by a high-speed rotating drive device to drive the prism assembly to project to the detection point. At the same time, the reflected light of the detection object is received by the prism and returned along the original light path. Every time the guide wire rotates one circle, the infrared light emitted by the prism is equivalent to completing a 360-degree circular scan in a plane perpendicular to the rotation axis. According to the OCT optical coherence tomography method, the drive device drives the probe catheter to produce a frame of plane image (X, Y axial image) every time it rotates one circle. The driver moves back and forth, and the change in the axial (Z-axis) position of the catheter detection scanning plane will produce an XY axial plane image corresponding to the Z-axis position. Obviously, these plane images organized in sequence form a three-dimensional image.

[0003] Constructing a three-dimensional image requires a high-speed rotating drive device. From the above analysis, it is not difficult to derive the following formula:

[0004]

[0005] For example, a clinical test requirement is: within a 50mm interval, the catheter must be withdrawn (moved backward) within 2.5 seconds. If the driver rotates the catheter at 10rps (600rpm), the image resolution can be calculated to be 2mm. With the current OCT technology, the resolution generally achieved in the longitudinal / lateral direction (20μm) is obviously far from the axial resolution.

[0006] From the above analysis, we can see that there are two ways to improve axial resolution:

[0007] Increase the speed of the drive, such as 100rps or even higher.

[0008] Extend the withdrawal time.

[0009] The second solution is often not allowed in clinical practice, so increasing the drive speed becomes the only option.

[0010] With the continuous promotion of OCT technology in medical clinical applications, the development of high-speed drivers is an inevitable result. To achieve high-speed transmission, choosing a suitable transmission method is an important part. Traditional mechanical transmission methods include: belt drive, chain drive, gear drive, etc.

[0011] However, to achieve a high speed of more than 3000rpm (50rps), high-speed gear transmission is a solution. Gear transmission will also encounter technical bottlenecks in the face of higher speed requirements, which are mainly reflected in the following two aspects:

[0012] Speed ​​bottleneck: When the gear transmission speed reaches a certain limit, the problems caused by high speed include mechanical noise and mechanical vibration.

[0013] Precision bottleneck: In order to achieve progress in precision and speed, traditional mechanical transmission devices have to pay higher manufacturing costs, and the cost increase is not proportional to the performance improvement. Summary of the invention

[0014] In response to the existing demand for high-speed driving devices in OCT equipment, the implementation cases of the present invention provide a brushless DC driving motor applied to OCT detection equipment, a direct drive module of OCT detection equipment, a driving device of OCT detection equipment and OCT detection equipment.

[0015] The brushless DC direct-drive motor for OCT detection equipment provided in the embodiment of the present invention includes a permanent magnet, a multi-pole winding stator, a Hall sensor, a motor bearing shaft, a direct-drive motor driver and a rotating shaft;

[0016] The permanent magnet is fixedly arranged on the rotating shaft, and a through hole penetrating the axis of the rotating shaft is arranged on the rotating shaft. The rotating shaft comprises a first rotating shaft end provided with a slip ring adapter interface and a second rotating shaft end provided with a catheter adapter interface;

[0017] The multi-pole winding stator, the Hall sensor and the direct-drive motor driver are fixed on the motor bearing shaft, the Hall sensor is connected to the direct-drive motor driver, and the direct-drive motor driver is also connected to the multi-pole winding stator, and the permanent magnet on the rotating shaft is located at the center of the multi-pole winding stator;

[0018] The Hall sensor is used to detect the position of the magnetic poles of the permanent magnet arranged on the rotating shaft relative to the multi-pole winding stator, and control the current direction of each electrode in the multi-pole winding stator through the direct drive motor driver.

[0019] As an emerging transmission technology in the world in the past decade, direct drive technology has advantages that traditional transmission cannot compare with. Direct drive is to connect the direct drive motor directly to the load under the control of the drive system to achieve direct drive of the load. With this structure, all mechanical transmission components (ball screw pair, rack and gear, transmission belt / pulley and gear box, etc.) are eliminated, eliminating the backlash, flexibility and other related problems caused by mechanical transmission. The brushless DC direct drive motor for OCT detection equipment provided by the embodiment of the present invention makes adaptive changes to the existing direct drive motor, and sets the shaft of the brushless DC direct drive motor as a shaft through hole that passes through the shaft axis, so that the optical fiber can pass through the center of the brushless DC direct drive motor. At the same time, in order to match the slip ring adapter and the catheter adapter to achieve the effect of better connecting the optical fiber, a slip ring adapter interface is set at the first shaft end of the shaft corresponding to the slip ring adapter, and a catheter adapter interface is set at the second shaft end of the shaft corresponding to the catheter adapter. By modifying the above structure of the brushless DC direct drive motor, the brushless DC direct drive motor can be directly applied to the OCT detection equipment, providing the OCT detection equipment with power for 360-degree rotation along the axial direction.

[0020] Preferably, the brushless DC direct drive motor further comprises a motor housing, a motor front end disk and a motor rear end disk, the motor front end disk and the motor rear end disk are provided with a through hole for the shaft to pass through in the center, the motor front end disk is fixed to the motor housing from the first shaft end, and the motor rear end disk is fixed to the motor housing from the second shaft end. The motor front end disk and the motor rear end disk cooperate with the motor housing to form a protective housing of the brushless DC direct drive motor, which can seal the multi-pole winding stator, permanent magnet, shaft, etc. inside the motor within the protective housing, which can not only prevent the external environment from affecting the precise matching and operation of the motor, but also prevent the high-speed rotating shaft and permanent magnet from harming the operator.

[0021] In a specific embodiment, the slip ring adapter interface includes a first stepped shaft and a second stepped shaft arranged from the end face of the first rotating shaft, and the outer diameter of the first stepped shaft is smaller than the outer diameter of the second stepped shaft. The outer diameter of the first stepped shaft is smaller than the second stepped shaft, so that the first stepped shaft can be inserted into the connection port of the slip ring adapter, and the second stepped shaft provides a limiting function.

[0022] The catheter adapter interface includes a third step shaft and a fourth step shaft arranged from the end face of the second rotating shaft, the outer diameter of the fourth step shaft is smaller than the outer diameter of the third step shaft; the side of the third step shaft is provided with an interface for the catheter adapter connector to be connected, and the fourth step shaft is provided with a side wall through hole penetrating the fourth step side wall. At the same time, an optical communication module is arranged at the side wall through hole for receiving an optical control signal.

[0023] An embodiment of the present invention also provides a direct drive module of an OCT detection device, including a motor base, a fiber optic slip ring, a slip ring adapter, a catheter adapter and a brushless DC direct drive motor as described above, wherein the fiber optic slip ring and the brushless DC direct drive motor are fixedly arranged on the motor base, the input end of the fiber optic slip ring is externally connected to a light source optical fiber, the output end of the fiber optic slip ring is connected to the optical fiber input end of the optical fiber connection slip ring adapter, the slip ring adapter is connected to the rotating shaft of the brushless DC direct drive motor through the slip ring adapter interface, and performs synchronous rotation motion, the catheter adapter is connected to the catheter adapter interface through the SG flange, and the optical fiber passes through a through hole arranged at the axis center of the rotating shaft and is connected to the catheter adapter through the catheter adapter interface.

[0024] The direct drive module of the OCT detection device provided in the embodiment of the present invention abandons the traditional method of driving the rotating shaft through a motor and driving the rotation of the shaft through a transmission component, and adopts a modified brushless DC direct drive motor suitable for the OCT detection device. At this stage, it is possible to achieve a rotation speed of more than 6000rpm. The use of direct drive technology can easily achieve speed control and precise positioning on the equipment. The transmission system reduces mechanical transmission parts, reduces wear, increases equipment life, saves energy, and at the same time saves the raw materials and manufacturing costs of parts, thereby reducing the overall cost of the equipment. At the same time, with the development of direct drive motor manufacturing technology, the direct drive module of the OCT detection device using a brushless DC direct drive motor can achieve higher rotation speeds, more precise speed control and controllable accuracy, so that the OCT detection device can achieve better detection performance.

[0025] Preferably, it further comprises a code disc, which is fixed on the slip ring adapter.

[0026] The embodiment of the present invention further provides a driving device for an OCT detection device, including a direct drive module of the OCT detection device as described above, and also including a linear guide module, the linear guide module including a slide, a linear guide, a stepper motor and a stepper motor driver, the slide is fixedly connected to the motor seat, the guide direction of the linear guide is arranged along the longitudinal direction of the motor seat, and the stepper motor is connected to the slide through a transmission mechanism;

[0027] The stepper motor is used to drive the slide to move along the linear guide rail, and the stepper motor driver is used to receive control signals and drive the stepper motor to work according to the control signals.

[0028] The driving device of the OCT detection equipment provided in the embodiment of the present invention realizes high-speed rotation of 360 degrees around the rotation axis through a direct drive module, and realizes longitudinal forward and backward movement along the rotation axis through a linear guide module.

[0029] At the same time, an embodiment of the present invention also provides an OCT detection device, including a bracket and an OCT detection device driving device as described above, a linear guide rail and a stepper motor are fixed on the bracket, a catheter socket is provided at the front end of the bracket corresponding to the position of the catheter adapter, and the OCT probe passes through the catheter socket and is connected to the catheter adapter through a catheter.

[0030] The embodiment of the present invention uses the principle of direct drive technology to develop a brushless DC direct drive motor specifically for use in the OCT application field. It is combined with a direct drive module and a linear guide module to form a complete OCT detection equipment drive device. The device successfully solves the technical problems brought about by high-speed transmission. At the same time, due to the mechatronic structural design, the mechanical structure and electrical control are simple, which brings the advantages of convenient assembly and debugging, providing a convenient way to accelerate the development, promotion and application of OCT equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of a brushless DC direct drive motor used in an OCT detection device in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the direct drive module structure of the OCT detection device in an embodiment of the present invention;

[0033] Figure 3 Schematic diagram of the driver structure in the OCT detection device in an embodiment of the present invention.

[0034] In the accompanying drawings: 100, brushless DC direct drive motor; 110, rotating shaft; 111, through hole; 112, first step shaft; 113, second step shaft; 114, third step shaft; 115, fourth step shaft; 116, interface; 117, side wall through hole; 120, motor housing; 200, optical communication module; 300, direct drive module; 310, motor seat; 320, optical fiber slip ring; 330, slip ring adapter; 340, catheter adapter; 350, light source optical fiber; 360, SG flange; 370, switch baffle; 410, slide table; 420, linear guide; 430, stepper motor; 440, stepper motor driver; 500, bracket; 510, catheter socket. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0036] With the development of OCT technology, higher requirements are placed on the driving device of OCT detection equipment, especially on the servo motor and transmission mechanism that drive the OCT catheter probe to rotate at high speed. However, despite a lot of improvements in the servo motor and transmission mechanism currently used in the OCT detection device OCT catheter probe drive, there are still technical bottlenecks. On the one hand, with the increase in speed, mechanical noise is brought about, and mechanical vibration becomes difficult to control. On the other hand, the improvement in performance has greatly increased the manufacturing cost.

[0037] In order to solve the technical bottleneck caused by the requirement of higher speed for existing OCT detection equipment, the technical solution provided by the present invention takes a different approach. By studying the emerging direct drive technology in the past decade, the brushless DC direct drive motor is optimized and improved, which perfectly solves the requirement of OCT detection equipment for higher speed development. At the same time, it also provides an important development direction for OCT detection equipment drive technology.

[0038] Example:

[0039] like Figure 1 As shown, the brushless DC direct drive motor 100 for OCT detection equipment provided by the embodiment of the present invention includes a permanent magnet (not shown), a multi-pole winding stator (not shown), a Hall sensor (not shown), a motor bearing shaft (not shown), a direct drive motor driver (not shown) and a rotating shaft 110. Among them, the permanent magnet, the multi-pole winding stator, the Hall sensor and the direct drive motor driver have mature application solutions in the DC direct drive motor, and the technical solution provided by the present invention has no limitation on their structure.

[0040] The permanent magnet is fixedly disposed on the rotating shaft 110, and a through hole 111 is disposed on the rotating shaft 110 and passes through the axis of the rotating shaft 110. The rotating shaft 110 includes a first rotating shaft end provided with a slip ring adapter interface and a second rotating shaft end provided with a catheter adapter interface; wherein the permanent magnet and the rotating shaft 110 can be integrally formed to increase the mechanical strength of the rotating shaft 110.

[0041] The multi-pole winding stator, the Hall sensor and the direct drive motor driver are fixed on the motor bearing shaft. The Hall sensor is connected to the direct drive motor driver, and the direct drive motor driver is also connected to the multi-pole winding stator. The permanent magnet on the rotating shaft 110 is located at the center of the multi-pole winding stator.

[0042] The Hall sensor is used to detect the position of the magnetic poles of the permanent magnets arranged on the rotating shaft 110 relative to the multi-pole winding stator, and control the current direction of each electrode in the multi-pole winding stator through the direct drive motor driver. The multi-pole winding stator is connected to an external DC power supply through the direct drive motor driver, and the direct drive motor driver controls the direction and magnitude of the current passing through each electrode winding to change the direction and magnitude of the magnetic field generated by the multi-pole winding stator. An electromagnetic induction device, such as a magnetic sensor, is arranged on the Hall sensor, which determines the magnetic poles of the electromagnetic by sensing the direction of the electromagnetic magnetic force. The position sensor transmits the magnetic pole direction information of the permanent magnet sensed to the direct drive motor driver, and the direct drive motor driver will change the direction of the magnetic field generated by each electrode winding by changing the current direction of each electrode winding according to the information sensed by the position sensor, thereby generating an electromagnetic field opposite to the magnetic pole of the permanent magnet, and using the principle of magnets with opposite poles attracting each other, the permanent magnet is driven to move, thereby driving the rotating shaft 110 to rotate. At the same time, the direct drive motor driver also controls the strength of the generated magnetic field by controlling the magnitude of the current input into each electrode winding according to the control signal, thereby controlling the rotation speed of the rotating shaft 110.

[0043] As a new transmission technology in the world in the past decade, direct drive technology has advantages that traditional transmission cannot match. Direct drive is to connect the direct drive motor directly to the load under the control of the drive system to achieve direct drive of the load. With this structure, all mechanical transmission components (ball screw pair, rack and gear, transmission belt / pulley and gear box, etc.) are eliminated, eliminating the backlash, flexibility and other related problems caused by mechanical transmission. The brushless DC direct drive motor 100 for OCT detection equipment provided in the embodiment of the present invention makes adaptive changes to the existing direct drive motor, and sets the rotating shaft 110 of the brushless DC direct drive motor 100 as a rotating shaft through hole 111 that passes through the axis of the rotating shaft 110, so that the optical fiber can pass through the center of the brushless DC direct drive motor 100. At the same time, in order to match the slip ring adapter 330 and the catheter adapter 340 to achieve the function of better connecting the optical fiber, a slip ring adapter interface is set at the first rotating shaft end of the rotating shaft 110 corresponding to the connection of the slip ring adapter 330, and a catheter adapter interface is set at the second rotating shaft end of the rotating shaft 110 corresponding to the catheter adapter 340. By modifying the above structure of the brushless DC direct drive motor 100, the brushless DC direct drive motor 100 can be directly applied to the OCT detection equipment, providing the OCT detection equipment with power for 360-degree rotation along the axial direction.

[0044] At the same time, the use of brushless DC direct drive motors has the following advantages:

[0045] 1. Low interference: Brushless motors do not have brushes, so there is no need to consider the life of the brushes and regular replacement of brushes. No sparks are generated when the motor is running, which greatly reduces the interference of sparks to surrounding radio equipment.

[0046] 2. Low noise and smooth operation. The brushless motor has no brushes, which greatly reduces the friction during operation, runs smoothly, and has much lower noise. This advantage is particularly suitable for environments with low noise requirements. This will provide a better experience for OCT detection equipment as a medical detection equipment.

[0047] 3. Long life and low maintenance cost: From a mechanical point of view, the brushless motor is almost a maintenance-free motor. When necessary, only some dust removal maintenance is required.

[0048] Preferably, the brushless DC direct drive motor 100 further includes a motor housing 120, a motor front end disk and a motor rear end disk, the motor front end disk and the motor rear end disk are provided with a through hole 111 for the rotation shaft 110 to pass through at the center, the motor front end disk is fixed to the motor housing 120 from the first rotation shaft end, and the motor rear end disk is fixed to the motor housing 120 from the second rotation shaft end. The motor front end disk and the motor rear end disk cooperate with the motor housing 120 to form a protective housing of the brushless DC direct drive motor 100, which can seal the multi-pole winding stator, permanent magnet, rotation shaft 110 and the like inside the motor within the protective housing, which not only prevents the external environment from affecting the precise matching and operation of the motor, but also prevents the high-speed rotating rotation shaft 110 and permanent magnet from harming the operator.

[0049] In a specific embodiment, the slip ring adapter interface includes a first stepped shaft 112 and a second stepped shaft 113 arranged from the end face of the first rotating shaft, and the outer diameter of the first stepped shaft 112 is smaller than the outer diameter of the second stepped shaft 113. The outer diameter of the first stepped shaft 112 is smaller than the second stepped shaft 113, so that the first stepped shaft 112 can be inserted into the connection port of the slip ring adapter 330, and the second stepped shaft 113 provides a limiting function.

[0050] The catheter adapter interface includes a third stepped shaft 114 and a fourth stepped shaft 115 which are arranged from the end face of the second rotating shaft, wherein the outer diameter of the fourth stepped shaft 115 is smaller than the outer diameter of the third stepped shaft 114; an interface 116 for the catheter adapter 340 connector to be connected is arranged on the side of the third stepped shaft 114, and a side wall through hole 117 which penetrates the side wall of the fourth stepped shaft 115 is arranged on the fourth stepped shaft 115. At the same time, an optical communication module 200 is arranged at the side wall through hole 117 for receiving an optical control signal.

[0051] like Figure 2As shown, the embodiment of the present invention also provides a direct drive module 300 of an OCT detection device, including a motor base 310, a fiber optic slip ring 320, a slip ring adapter 330, a catheter adapter 340 and the brushless DC direct drive motor 100 as described above, the fiber optic slip ring 320 and the brushless DC direct drive motor 100 are fixedly arranged on the motor base 310, the input end of the fiber optic slip ring 320 is externally connected to the light source optical fiber 350, the output end of the fiber optic slip ring 320 is connected to the optical fiber input end of the optical fiber connection slip ring adapter 330, the slip ring adapter 330 is connected to the rotating shaft 110 of the brushless DC direct drive motor 100 through the slip ring adapter interface, and performs synchronous rotation motion, the catheter adapter 340 is connected to the catheter adapter interface through the SG flange 360, and the optical fiber passes through the through hole 111 set at the axis of the rotating shaft 110 and is connected to the catheter adapter 340 through the catheter adapter interface. The optical fiber slip ring 320 can realize uninterrupted transmission of optical signals between rotating components such as the slip ring adapter 330 and the brushless DC direct drive motor 100 and stationary components such as the light source optical fiber 350 .

[0052] The direct drive module 300 of the OCT detection device provided in the embodiment of the present invention abandons the traditional method of driving the rotating shaft 110 through a motor and driving the rotating shaft 110 to rotate through a transmission component, and adopts a modified brushless DC direct drive motor 100 suitable for the OCT detection device. At this stage, it is possible to achieve a rotation speed of more than 6000rpm. The use of direct drive technology can easily achieve speed control and precise positioning on the equipment. The transmission system reduces mechanical transmission parts, reduces wear, increases equipment life, saves energy, and saves raw materials and manufacturing costs of parts, thereby reducing the overall cost of the equipment. At the same time, with the development of direct drive motor manufacturing technology, the direct drive module 300 of the OCT detection device using the brushless DC direct drive motor 100 can achieve higher rotation speeds, more precise speed control and controllable accuracy, so that the OCT detection device can achieve better detection performance.

[0053] Preferably, a code disc is further included, and the code disc is fixed on the slip ring adapter 330 .

[0054] like Figure 3 As shown, the embodiment of the present invention further provides a driving device for an OCT detection device, including the direct drive module 300 of the OCT detection device as described above, and also including a linear guide rail module, the linear guide rail module including a slide 410, a linear guide rail 420, a stepper motor 430 and a stepper motor driver 440, the slide 410 is fixedly connected to the motor base 310, the guide rail direction of the linear guide rail 420 is arranged along the longitudinal direction of the motor base 310, and the stepper motor 430 is connected to the slide 410 through a transmission mechanism;

[0055] The stepper motor 430 is used to drive the slide 410 to move along the linear guide 420, and the stepper motor driver 440 is used to receive a control signal and drive the stepper motor 430 to work according to the control signal. For example, the direction and speed of the stepper motor 430 are controlled, and the stroke of the stepper motor 430 is controlled, so as to control the speed, direction and stroke of the direct drive module 300 moving on the linear guide 420. At the same time, a switch baffle 370 can also be set between the slide 410 and the motor seat 310. The switch baffle is used to trigger the photoelectric switches at both ends, so as to realize zero position detection and stroke limit safety insurance.

[0056] The driving device of the OCT detection device provided in the embodiment of the present invention realizes high-speed rotation of 360 degrees around the rotation axis through the direct drive module 300, and realizes longitudinal forward and backward movement along the rotation axis 110 through the linear guide module.

[0057] like Figure 3 As shown, the embodiment of the present invention also provides an OCT detection device, including a bracket 500 and an OCT detection device driving device as described above, a linear guide rail 420 and a stepper motor 430 are fixed on the bracket 500, a catheter socket 510 is provided at the front end of the bracket 500 corresponding to the position of the catheter adapter 340, the OCT probe passes through the catheter socket 510 and is connected to the catheter adapter 340 through the catheter, and is firmly connected to the rotating shaft 110 by the SG flange 360. The catheter socket 510 is used to limit the OCT probe, and drives the catheter adapter 340 to rotate through the rotating shaft 110, thereby driving the catheter connected to the catheter adapter 340 to rotate at high speed, thereby driving the OCT probe to rotate at high speed.

[0058] The embodiment of the present invention uses the principle of direct drive technology to develop a brushless DC direct drive motor 100 specifically for use in the OCT application field. It is combined with a direct drive module 300 and a linear guide rail module to form a complete OCT detection equipment drive device. The device successfully solves the technical problems brought about by high-speed transmission. At the same time, due to the mechatronic structural design, the mechanical structure and electrical control are simple, which brings the advantages of convenient assembly and debugging, and provides a convenient way to accelerate the development, promotion and application of OCT equipment.

[0059] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A direct drive module of an OCT detection device, characterized in that: It comprises a motor seat, an optical fiber slip ring, a slip ring adapter, a catheter adapter and a brushless DC direct drive motor, wherein the optical fiber slip ring and the brushless DC direct drive motor are fixedly connected to the motor seat, the optical fiber slip ring input end is externally connected to a light source optical fiber, the optical fiber slip ring output end is connected to an optical fiber input end of an optical fiber connection slip ring adapter, the slip ring adapter is connected to the rotating shaft of the brushless DC direct drive motor through the slip ring adapter interface and performs synchronous rotation, the catheter adapter is connected to the catheter adapter interface through an SG flange, and the optical fiber passes through a through hole set at the axis of the rotating shaft and is connected to the catheter adapter through the catheter adapter interface; The brushless DC direct drive motor comprises a permanent magnet, a multi-pole winding stator, a Hall sensor, a motor bearing shaft, a direct drive motor driver, a rotating shaft, a motor housing, a motor front end disk and a motor rear end disk; The permanent magnet is fixedly arranged on the rotating shaft, and a through hole penetrating the axis of the rotating shaft is arranged on the rotating shaft, and the rotating shaft comprises a first rotating shaft end provided with a slip ring adapter interface and a second rotating shaft end provided with a catheter adapter interface; The multi-pole winding stator, the Hall sensor and the direct-drive motor driver are fixed on the motor bearing shaft, the Hall sensor is connected to the direct-drive motor driver, and the direct-drive motor driver is also connected to the multi-pole winding stator, and the permanent magnet on the rotating shaft is located at the center of the multi-pole winding stator; The Hall sensor is used to detect the position of the magnetic poles of the permanent magnet arranged on the rotating shaft relative to the multi-pole winding stator, and control the direction of the current input to each electrode in the multi-pole winding stator through the direct drive motor driver; The motor front end disk and the motor rear end disk are centrally provided with a through hole for the shaft to pass through, the motor front end disk is fixed to the motor housing from the first shaft end, and the motor rear end disk is fixed to the motor housing from the second shaft end; The slip ring adapter interface comprises a first stepped shaft and a second stepped shaft arranged from the end surface of the first rotating shaft, wherein the outer diameter of the first stepped shaft is smaller than the outer diameter of the second stepped shaft; The catheter adapter interface includes a third step shaft and a fourth step shaft arranged starting from the end face of the second rotating shaft, and the outer diameter of the fourth step shaft is smaller than the outer diameter of the third step shaft; the side of the third step shaft is provided with an interface for the catheter adapter connector to be clamped, and the fourth step shaft is provided with a side wall through hole that penetrates the fourth step side wall.

2. The direct drive module of the OCT detection device according to claim 1, characterized in that: Also included is a code disc, which is fixed on the slip ring adapter.

3. A driving device for an OCT detection device, comprising a direct drive module of the OCT detection device according to claim 1 or 2, and further comprising a linear guide rail module, wherein the linear guide rail module comprises a slide, a linear guide rail, a stepper motor and a stepper motor driver, wherein the slide is fixedly connected to a motor seat, the guide rail direction of the linear guide rail is arranged along the longitudinal direction of the motor seat, and the stepper motor is connected to the slide through a transmission mechanism; The stepper motor is used to drive the slide table to move along the linear guide rail, and the stepper motor driver is used to receive a control signal and drive the stepper motor to work according to the control signal.

4. OCT detection equipment, characterized in that, It comprises a bracket and the OCT detection equipment driving device as described in claim 3, the linear guide rail and the stepper motor are fixed on the bracket, a catheter socket is arranged at the front end of the bracket corresponding to the position of the catheter adapter, and the OCT probe passes through the catheter socket and is connected to the catheter adapter through the catheter.

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