Clutch, medical drive device, and intravascular ultrasound diagnostic instrument

Abstract

The application belongs to the technical field of medical equipment, and discloses a clutch, a medical driving device and an intravascular ultrasound diagnostic instrument. The clutch comprises a bottom plate, an outer cylinder, an inner cylinder, a first gear, a second gear and an adjusting assembly. The inner cylinder is slidingly connected in the outer cylinder; the first gear is rotatably connected to the inner cylinder; the second gear is rotatably connected to the outer cylinder and oppositely arranged with the first gear; the adjusting assembly is movably connected to the bottom plate and partially penetrates through the outer cylinder, and one end of the adjusting assembly penetrating through the outer cylinder is connected with the inner cylinder to drive the inner cylinder to move and adjust the engagement or disengagement of the first gear and the second gear. Thus, when the clutch is used, the first gear and the second gear are arranged in the outer cylinder, the engagement and disengagement of the first gear and the second gear are realized by the sliding of the inner cylinder, the overall clutch has a compact structure layout, the overall volume is small, and the space occupation is small, so that the utilization rate of the space can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a clutch, a medical driving device and an intravascular ultrasound diagnostic instrument. BACKGROUND

[0002] In the prior art, the catheter driving unit comprises a motor, a gear transmission mechanism, a speed regulating mechanism and a connecting mechanism. The motor, the gear transmission mechanism, the speed regulating mechanism and the connecting mechanism are connected in sequence, and the connecting mechanism is connected with the catheter to transmit the power generated by the motor to the catheter to drive the catheter to move, so that the catheter moves in the blood vessel to perform ultrasonic diagnosis.

[0003] However, the catheter driving unit is relatively complex in structure, and multiple groups of structures need to be installed in sequence to realize the control and adjustment of the movement of the catheter, resulting in a large overall volume of the catheter driving unit, occupying more space and reducing the utilization rate of the space. SUMMARY

[0004] The purpose of the present application is to provide a clutch, a medical driving device and an intravascular ultrasound diagnostic instrument, which solves the problem of large volume of the catheter driving unit for controlling the movement of the catheter, occupying more space and resulting in low space utilization rate in the prior art.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a clutch, which comprises a bottom plate, an outer cylinder, an inner cylinder, a first gear, a second gear and an adjusting assembly. The outer cylinder is fixed to the bottom plate; the inner cylinder is slidingly connected in the outer cylinder; the first gear is rotatably connected to the inner cylinder and is used to be connected with a driving unit; the second gear is rotatably connected to the outer cylinder and is oppositely arranged with the first gear, and is used to be connected with a transmission unit; and the adjusting assembly is movably connected to the bottom plate and partially penetrates through the outer cylinder, one end of the adjusting assembly penetrating through the outer cylinder is connected with the inner cylinder to drive the inner cylinder to move and adjust the meshing or disengaging of the first gear and the second gear.

[0007] Optionally, the adjusting assembly comprises a guide piece penetrating through the outer cylinder and connected with the inner cylinder, and a shift fork having opposite first and second ends, the first end being rotatably connected to the bottom plate, the second end being connected with the guide piece, the shift fork being provided with a pressing portion for driving the second end to rotate, the guide piece being driven to move along a first direction with the second end to rotate, so as to realize the meshing or disengaging of the first gear and the second gear.

[0008] Optionally, the guide member comprises a connecting rod connected to the second end of the shift fork in the first direction, and a driving rod arranged in the connecting rod and penetrating through the outer cylinder to be fixedly connected with the inner cylinder, wherein the outer cylinder is provided with a guide groove in which the driving rod slides and which extends spirally in the first direction.

[0009] Optionally, the adjusting assembly further comprises an elastic member connected with the shift fork and the bottom plate respectively to drive the shift fork to reset.

[0010] Optionally, the pressing portion is hollow, and the elastic member extends into the pressing portion and is fixedly connected with the pressing portion.

[0011] Optionally, the clutch further comprises a limiting member arranged in the bottom plate and connected with the adjusting assembly to limit the movement range of the adjusting assembly.

[0012] Optionally, the limiting member comprises a limiting plate provided with a limiting groove, and the adjusting assembly is partially connected with the limiting groove to limit the movement range of the adjusting assembly.

[0013] Optionally, the first gear and the second gear are bevel gears with triangular teeth.

[0014] In a second aspect, the present application provides a medical driving device, which comprises the clutch according to any one of the above first aspects, a driving mechanism arranged in the clutch and connected with the first gear to drive the first gear to rotate, and a connecting shaft arranged in the bottom plate of the clutch, one end of the connecting shaft being connected with the second gear of the clutch, and the other end being used to be connected with a moving structure to drive the moving structure to move.

[0015] In a third aspect, the present application provides an intravascular ultrasound diagnostic instrument, which comprises a catheter having a detection end extending into a blood vessel and a driving end arranged opposite to the detection end, and the medical driving device according to the second aspect, the connecting shaft of the medical driving device being connected with the driving end of the catheter to drive the catheter to move.

[0016] The present application has the following advantages:

[0017] 1、By setting the inner and outer sleeve of the inner and outer sleeve, the adjusting assembly is used to drive the inner sleeve to slide relative to the outer sleeve, and then drive the first gear away from the second gear, so that the first gear and the second gear are separated, and then the driving unit is separated from the transmission unit, and the transmission is stopped, and vice versa. The transmission can be smoothly realized. When the clutch is used, the first gear and the second gear are arranged in the outer sleeve, and the meshing and disengaging of the first gear and the second gear are realized by sliding the inner sleeve, so that the structure layout of the overall clutch is compact, the overall volume is small, and the occupied space is small, thereby effectively improving the utilization rate of space.

[0018] 2、By adopting the clutch to realize the connection or disconnection of the driving mechanism and the connecting shaft, the clutch has the characteristics of small volume and small space occupation, so that the medical driving device occupies less space, thereby further improving the utilization rate of space in the application and medical equipment.

[0019] 3、By adopting the medical driving device to drive the catheter to move, the overall intravascular ultrasound diagnostic instrument occupies very small space, so as to improve the utilization rate of the overall space. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the medical driving device in some embodiments of the application.

[0021] Figure 2 It is Figure 1 A-A sectional view in the implementation mode shown.

[0022] Figure 3 It is an isometric view of the medical driving device in some embodiments of the application.

[0023] In the figure:

[0024] 100, bottom plate; 110, vertical plate;

[0025] 200, outer sleeve; 210, guide groove; 220, mounting plate;

[0026] 300, inner sleeve;

[0027] 400, first gear;

[0028] 500, second gear;

[0029] 600, adjusting assembly; 610, guide; 611, connecting rod; 612, driving rod; 620, yoke; 621, first end; 622, second end; 623, pressing part; 624, pin shaft; 630, elastic piece;

[0030] 700, limiting plate; 710, limiting groove;

[0031] 800, driving mechanism; 810, rotating shaft; 820, driving motor; 830, third gear; 840, fourth gear; 850, fifth gear;

[0032] 900, connecting shaft;

[0033] X, first direction. DETAILED DESCRIPTION

[0034] The application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the application and not in limitation thereof. It should also be noted that, for the purpose of clarity, only those structures related to the application are shown in the drawings.

[0035] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] In the description of the present embodiment, the terms "upper", "lower", "right", and other orientation or position relationships are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] The application provides a kind of clutch, medical driving device and intravascular ultrasound diagnostic instrument

[0039] Embodiment one

[0040] Clutch

[0041] Figure 1 Front view of a medical driving device in some embodiments of the present application. Figure 2 For Figure 1 A-A sectional view in the implementation shown. Refer to Figure 1 And Figure 2 The clutch shown in the implementation includes a base plate 100, an outer cylinder 200, an inner cylinder 300, a first gear 400, a second gear 500, and an adjusting assembly 600. The outer cylinder 200 is fixed to the base plate 100. The inner cylinder 300 is slidingly connected in the outer cylinder 200. The first gear 400 is rotationally connected to the inner cylinder 300, and is used to be connected with a driving unit. The second gear 500 is rotationally connected to the outer cylinder 200 and is oppositely arranged with the first gear 400, and is used to be connected with a transmission unit. The adjusting assembly 600 is movably connected to the base plate 100 and partially penetrates the outer cylinder 200, and one end of the adjusting assembly 600 penetrating the outer cylinder 200 is connected with the inner cylinder 300 to drive the inner cylinder 300 to move and adjust the engagement or disengagement of the first gear 400 and the second gear 500.

[0042] Specifically, the base plate 100 is in a strip shape, and the lower end of the outer cylinder 200 is fixed on the top wall of the base plate 100 in a manner of screwing, bonding, or welding, etc. The outer cylinder 200 extends along a first direction X, and in this embodiment, the first direction X is set as a vertical direction. The inner cylinder 300 is located in the outer cylinder 200, and the outer diameter of the inner cylinder 300 is smaller than the inner diameter of the outer cylinder 200, so that the inner cylinder 300 and the outer cylinder 200 can be slidingly connected.

[0043] The driving unit is arranged at the upper end of the outer cylinder 200. The driving unit includes a rotating shaft 810 extending into the outer cylinder 200 along the first direction X, the rotating shaft 810 penetrates the inner cylinder 300 and is rotationally connected with the inner cylinder 300, and the first gear 400 is fixed on one end of the rotating shaft 810 penetrating the inner cylinder 300. The peripheral wall of the rotating shaft 810 is provided with an annular clamping groove, and the inner cylinder 300 is provided with a clamping ring clamped with the annular clamping groove, so that the rotating shaft 810 can move with the movement of the inner cylinder 300.

[0044] The second gear 500 is located below the first gear 400 and cannot move but only rotate. A transmission unit such as a transmission shaft is fixed coaxially on the second gear 500.

[0045] One end of the adjusting assembly 600 is hinged on the base plate 100, and the other end is fixedly connected with the inner cylinder 300 penetrating the outer cylinder 200. A sliding groove can be arranged on the outer cylinder 200 along the first direction X to move the adjusting assembly 600, so that the adjusting assembly 600 drives the inner cylinder 300 to slide along the first direction X by the lever principle.

[0046] In use of the clutch, by setting the inner cylinder 300 and the outer cylinder 200 in the inner and outer sleeves, the inner cylinder 300 is driven to slide relative to the outer cylinder 200 by the adjusting assembly 600, the inner cylinder 300 drives the rotating shaft 810 to move in the first direction X, the rotating shaft 810 can drive the first gear 400 to move away from the second gear 500, so that the first gear 400 is disengaged from the second gear 500, then the driving unit is separated from the transmission unit, the transmission is stopped, and vice versa, the transmission can be smoothly realized. By setting the first gear 400 and the second gear 500 in the outer cylinder 200, the engagement and disengagement of the first gear 400 and the second gear 500 are realized by the sliding of the inner cylinder 300, so that the structure layout of the overall clutch is compact, the overall volume is small, and the space occupied is less, thereby effectively improving the utilization rate of the space.

[0047] Figure 3 is a perspective view of a medical driving device according to some embodiments of the application. Reference is made to Figure 1 and Figure 3 In some embodiments of the application, the adjusting assembly 600 includes a guide 610 and a yoke 620. The guide 610 passes through the outer cylinder 200 and is connected to the inner cylinder 300. The yoke 620 has opposite first and second ends 621 and 622, the first end 621 is rotatably connected to the bottom plate 100, and the second end 622 is connected to the guide 610. The yoke 620 is provided with a pressing portion 623 for driving the second end 622 to rotate, the guide 610 drives the inner cylinder 300 to move in the first direction X along with the rotation of the second end 622, and the engagement or disengagement of the first gear 400 and the second gear 500 is realized.

[0048] Specifically, the yoke 620 is long strip-shaped, and its extension direction is the same as that of the bottom plate 100. One end of the yoke 620 away from the outer cylinder 200 is the first end 621, and the other end is the second end 622. The first end 621 can be rotatably connected to the bottom plate 100 by a pin shaft 624, so that the second end 622 can rotate about the pin shaft 624. The guide 610 is provided on the second end 622, and the guide 610 is slidably connected to the outer cylinder 200. The guide 610 can be rod-shaped or other shapes, and it is fixedly connected to the inner cylinder 300 by welding or bonding.

[0049] The pressing portion 623 can protrude towards the side of the yoke 620 away from the bottom plate 100, so as to apply pressure to the yoke 620 by the pressing portion 623. The pressing portion 623 and the yoke 620 can be integrally formed, or they can be fixed by welding or bonding.

[0050] When it is needed to disengage the first gear 400 and the second gear 500, by applying pressure on the pressing part 623, the second end 622 of the yoke 620 can be driven to rotate around the first end 621, the guide piece 610 can move along with the rotation of the second end 622, and the guide piece 610 can slide relative to the outer cylinder 200 along with the movement of the guide piece 610, so that the inner cylinder 300 can be driven to move along the first direction X by the rotation shaft 810, and the first gear 400 can be driven to move along the first direction X, so as to realize the disengagement of the first gear 400 and the second gear 500. The engagement mode of the first gear 400 and the second gear 500 is the same as the disengagement mode, which will not be described here.

[0051] Referring to Figure 1 As shown in the figure, in some embodiments of the present application, the guide piece 610 includes a connecting rod 611 and a driving rod 612. The connecting rod 611 is slidably connected to the second end 622 of the yoke 620 along the first direction X. The driving rod 612 is arranged on the connecting rod 611 and passes through the outer cylinder 200 to be fixedly connected with the inner cylinder 300. Wherein, the outer cylinder 200 is provided with a guide groove 210 which is slidably arranged for the driving rod 612 and spirally extends along the first direction X.

[0052] Specifically, the guide groove 210 is arranged through the side wall of the outer cylinder 200 and spirally extends along the first direction X. The driving rod 612 is a cylindrical rod which is slidably connected in the guide groove 210, and the length of the driving rod 612 is greater than the wall thickness of the outer cylinder 200, so that one end of the driving rod 612 can extend into the outer cylinder 200 to be fixedly connected with the inner cylinder 300, and the other end can extend out of the outer cylinder 200 to be fixedly connected with the connecting rod 611.

[0053] The connecting rod 611 extends along the first direction X, and both upper and lower ends thereof are connected with the second end 622 of the yoke 620. The second end 622 of the yoke 620 is in U shape, the opening of which faces the outer cylinder 200, and the connecting rod 611 is located in the U-shaped opening. The upper and lower side walls of the U-shaped opening are both provided with a connecting notch, and the upper and lower ends of the connecting rod 611 correspondingly extend into the two connecting notches.

[0054] The pin shaft 624 located at the first end 621 of the yoke 620 extends along the first direction X, and the second end 622 can swing around the pin shaft 624, and the swing amplitude can be designed according to the moving distance of the first gear 400, so as to ensure that the stroke of the driving rod 612 is large enough to completely disengage the first gear 400 and the second gear 500.

[0055] When the extrusion pressing part 623 is extruded, the second end 622 of the fork 620 pushes the connecting rod 611 to move, the connecting rod 611 drives the driving rod 612 to move along the spiral extending guide groove 210, the driving rod 612 abuts against the groove wall of the guide groove 210 to push the driving rod 612 to move in the first direction X, and the driving rod 612 can smoothly drive the inner cylinder 300 to move in the first direction X, so that the first gear 400 is smoothly disengaged from the second gear 500.

[0056] Referring to Figure 3 As shown in FIG. 6, in some embodiments of the present application, the adjusting assembly 600 further comprises an elastic member 630. The elastic member 630 is connected with the fork 620 and the bottom plate 100 respectively to drive the fork 620 to reset.

[0057] Specifically, the elastic member 630 can be a spring, and the bottom plate 100 can comprise a vertical plate 110 which is arranged opposite to the fork 620, one end of the spring is fixedly connected with the vertical plate 110, and the other end is fixedly connected with the fork 620, and the extension direction of the spring is perpendicular to the length direction of the fork 620. It should be understood that the elastic member 630 can also be an elastic structure such as an elastic rod, and the type of the elastic member 630 can be designed according to the actual application scene, which is not limited in the present application.

[0058] By arranging the elastic member 630, when the first gear 400 and the second gear 500 are disengaged, the fork 620 will extrude the elastic member 630 while moving, so that the elastic member 630 is in an elastically deformed state, thereby when the fork 620 is released, the elastic member 630 can automatically recover the deformation to reset the fork 620 automatically, and the first gear 400 and the second gear 500 can automatically mesh.

[0059] In some embodiments of the present application, the pressing part 623 is hollow, and the elastic member 630 extends into the pressing part 623 and is fixedly connected with the pressing part 623. Specifically, the side of the pressing part 623 close to the vertical plate 110 is concave, and the end of the elastic member 630 away from the vertical plate 110 extends into the pressing part 623 and is fixedly connected with the pressing part 623, and the fixing mode can be welding.

[0060] By arranging the pressing part 623 as a cavity, the elastic member 630 can have a larger deformation amount, and the pressing part 623 is located at the middle part of the fork 620, so that the elastic member 630 is kept a certain distance from the first end 621, which can make the second end 622 of the fork 620 have sufficient swing amplitude to ensure that the driving rod 612 has sufficient stroke, and at the same time, can reduce the resistance when the pressing part 623 is extruded, so as to facilitate the swing generated by extruding the fork 620.

[0061] In some embodiments of the present application, the clutch further comprises a limiting member. The limiting member is arranged on the bottom plate 100 and connected with the adjusting assembly 600 to limit the movement range of the adjusting assembly 600.

[0062] Specifically, the limiting member is fixed on the top wall of the bottom plate 100, and the fixing manner can be welding or bonding. The limiting member can selectively abut with the yoke 620 of the adjusting assembly 600 to limit the swing amplitude of the yoke 620, and thus limit the movement range of the adjusting assembly 600. The limiting member can adopt a stop block, a stop plate or a stop strip, and can also adopt other structures capable of limiting the movement range of the yoke 620, such as a spring, and the specific type of the limiting member can be designed according to the actual application scenario.

[0063] By arranging the limiting member, the movement range of the yoke 620 can be limited when the yoke 620 moves, and thus the movement range of the inner cylinder body 300 can be limited. For example, when the yoke 620 is reset, the movement of the yoke 620 is limited, so that the first gear 400 and the second gear 500 are just fully engaged to reduce the possibility of damage caused by too much pressure between the first gear 400 and the second gear 500.

[0064] Referring to Figure 3 In some embodiments of the present application, the limiting member comprises a limiting plate 700. The limiting plate 700 is provided with a limiting groove 710, and the adjusting assembly 600 is partially slidably connected in the limiting groove 710 to limit the movement range of the adjusting assembly 600.

[0065] Specifically, the limiting plate 700 is located below the yoke 620, and a notch is formed on the upper side of the limiting plate 700 as the limiting groove 710, and the lower side of the yoke 620 extends into the limiting groove 710 and is slidably connected with the limiting groove 710. The limiting groove 710 can extend along the extension direction of the elastic member 630 to adapt to the swing direction of the yoke 620.

[0066] When the first gear 400 and the second gear 500 are engaged, the side surface of the yoke 620 abuts against the groove side wall on one side of the limiting groove 710. The limiting plate 700 can be provided with two limiting plates 700, which are arranged at intervals and located between the pressing portion 623 and the second end 622. It should be understood that the limiting plate 700 can also be provided with three or other number of limiting plates 700, and the specific number can be designed according to the length of the yoke 620, which is not limited by the present application.

[0067] By slidably connecting the yoke 620 in the limiting groove 710, when the yoke 620 is reset, the yoke 620 will abut against the groove side wall of the limiting groove 710, thereby limiting the movement range of the yoke 620 and reducing the possibility of the yoke 620 swinging too much under the action of the elastic member 630 to increase the pressure between the first gear 400 and the second gear 500.

[0068] In some embodiments of the present application, the first gear 400 and the second gear 500 are both bevel gears with triangular teeth. Specifically, the first gear 400 and the second gear 500 are coaxially arranged. The upper end of the first gear 400 is fixedly connected to the lower end of the rotating shaft 810, and the lower end surface of the first gear 400 is provided with a conical cavity, and triangular bevel gears are processed on the cavity wall of the conical cavity. The upper end of the second gear 500 is conical and extends into the conical cavity, and the outer surface of the second gear 500 is processed with triangular bevel gears matching the bevel gears in the conical cavity.

[0069] By coaxially arranging the first gear 400 and the second gear 500, the first gear 400 can be disengaged or engaged with the second gear 500 only by moving up and down. The triangular bevel gears ensure that the first gear 400 and the second gear 500 can be kept stable during disengagement and engagement, without impact, ensuring smooth clutching.

[0070] A medical driving device

[0071] Referring to Figure 1 and Figure 3 The medical driving device includes a driving mechanism 800, a connecting shaft 900, and a clutch as in any of the above embodiments. The driving mechanism 800 is arranged on the clutch and connected to the first gear 400 to drive the first gear 400 to rotate. The connecting shaft 900 is arranged on the bottom plate 100 of the clutch, one end of the connecting shaft 900 is connected to the second gear 500 of the clutch, and the other end is used to connect with a moving structure to drive the moving structure to move.

[0072] Specifically, the driving mechanism 800 includes a driving motor 820 and a gear set, and the gear set includes a third gear 830, a fourth gear 840, and a fifth gear 850. The motor shaft of the driving motor 820 is coaxially fixedly connected to the third gear 830. The fourth gear 840 is rotatably connected to the outer cylinder 200 and engaged with the third gear 830. The fifth gear 850 is coaxially fixedly connected to the upper end of the rotating shaft 810 and engaged with the fourth gear 840. The radius of the fifth gear 850 is greater than the radius of the fourth gear 840, and the radius of the fourth gear 840 is greater than the radius of the third gear 830.

[0073] An installation plate 220 is arranged on the upper end of the outer cylinder 200, the third gear 830 and the fourth gear 840 are arranged on the installation plate 220, and the driving motor 820 is fixedly arranged on the lower side of the installation plate 220. It should be understood that the gear set can be provided with only two gears, or can be provided with four gears, or the motor shaft of the driving motor 820 can be directly connected to the upper end of the rotating shaft 810. The specific structure of the driving mechanism 800 can be designed according to the actual speed requirement to be met, and the present application is not limited in this regard.

[0074] The connecting shaft 900 is a transmission unit, the upper end of which penetrates the bottom plate 100 and extends into the outer cylinder 200 to be fixedly connected with the lower end of the second gear 500, and the lower end of the connecting shaft 900 can be provided with a notch to form a D-shaped shaft, so as to facilitate the plug-in cooperation of the lower end of the connecting shaft 900 with the corresponding moving device.

[0075] The clutch is adopted to realize the connection or disconnection of the driving mechanism 800 and the connecting shaft 900, so that the layout of the clutch, the driving mechanism 800 and the connecting shaft 900 is compact, and the clutch has the characteristics of small volume and small space occupation, so that the medical driving device occupies less space as a whole, thereby further improving the utilization rate of space when applied to medical equipment.

[0076] An intravascular ultrasound diagnostic instrument

[0077] The intravascular ultrasound diagnostic instrument includes a catheter and a medical driving device as in the above embodiment. The catheter has a detection end extending into a blood vessel and a driving end arranged opposite to the detection end. The connecting shaft 900 of the medical driving device is connected with the driving end of the catheter to drive the catheter to move.

[0078] Specifically, the detection end of the catheter is provided with a transducer (also referred to as an ultrasonic probe) for generating and receiving ultrasonic waves. The transducer converts electrical energy into mechanical vibration (acoustic energy) of the transducer under the drive of a pulse voltage, and emits ultrasonic waves of about 50 MHz. When the ultrasonic waves propagate in the blood vessel, they encounter the interface of two kinds of tissues to generate reflected echoes. When the reflected echoes are received by the transducer, the transducer converts the acoustic energy into an electrical signal. After processing, the electrical signal can be converted into a gray-scale image representing the structure of the tissue. The medical driving device drives the transducer in the catheter to rotate at a high speed, so that real-time ultrasonic echo signals of the cross section of the blood vessel can be obtained.

[0079] The medical driving device further includes a retraction movement component. The retraction movement component drives the transducer to move back and forth along the blood vessel cavity to obtain a series of electrical signals at different positions. These electrical signals are transmitted to an industrial computer in a system cart for processing and ultimately forming an image for display to a user for diagnosis. By adopting the medical driving device to drive the catheter to perform corresponding activities during diagnosis, the overall intravascular ultrasound diagnostic instrument occupies very little space, so as to improve the overall utilization rate of space.

[0080] Embodiment Two

[0081] On the basis of Embodiment One, the difference between this embodiment and Embodiment One lies in the different activity mode of the adjusting assembly 600.

[0082] In the embodiment, the pin shaft 624 at the first end 621 of the fork 620 is arranged horizontally, that is, the second end 622 of the fork 620 swings in the first direction X, and the corresponding guide groove 210 extends vertically in the first direction X. The pressing portion 623 is protruded on the lower side of the fork 620, and the elastic member 630 is arranged on the upper side of the fork 620.

[0083] When the first gear 400 and the second gear 500 are engaged, the elastic member 630 is in a normal state. When it is needed to disengage the first gear 400 and the second gear 500, the pressing portion 623 is pressed, so that the fork 620 swings upward to press the elastic member 630, and the second end 622 of the fork 620 can drive the guide 610 to slide in the first direction X in the guide groove 210, so as to directly drive the inner cylinder 300 to slide in the first direction X, thereby realizing the disengagement of the first gear 400 and the second gear 500.

[0084] Embodiment Three

[0085] On the basis of the embodiment one, the difference between the embodiment and the embodiment one is that the swinging mode of the fork 620 is different.

[0086] In the embodiment, the pin shaft 624 is arranged at the middle position of the fork 620, and the elastic member 630 is arranged at the first end 621 of the fork 620. Similarly, the pressing portion 623 is arranged at one end of the fork 620, so that the first end 621 and the second end 622 of the fork 620 can rotate around the pin shaft 624 and the rotating directions are opposite.

[0087] When it is needed to drive the second end 622 of the fork 620 to rotate, the pressing portion 623 can be directly pressed, so that the first end 621 of the fork 620 rotates, and the second end 622 of the fork 620 can rotate reversely, thereby the inner cylinder 300 can be driven to move through the guide 610. In the rotating process of the fork 620, the lengths of the resistance arm and the power arm are the same, so that the resistance when the fork 620 is pressed to swing is reduced. Of course, the pin shaft 624 can be arranged close to the second end 622, so that the length of the resistance arm is less than that of the power arm, and the labor is saved when the fork 620 is pressed to swing.

[0088] Embodiment Four

[0089] On the basis of the embodiment one, the difference between the embodiment and the embodiment one is that the structure of the elastic member 630 is different.

[0090] In the embodiment, the elastic member 630 can adopt a torsional spring structure, which is directly arranged on the pin shaft 624 and connected with the first end 621 of the fork 620, so as to directly limit the swinging amplitude of the fork 620 and drive the automatic reset.

[0091] Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. It is not necessary or possible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A clutch, characterized in that, The clutch includes: Base plate (100); The outer cylinder (200) is fixed to the base plate (100); The inner cylinder (300) is slidably connected to the outer cylinder (200); The first gear (400) is rotatably connected to the inner cylinder (300), and the first gear (400) is used to connect to the drive unit; A second gear (500) is rotatably connected to the outer cylinder (200) and disposed opposite to the first gear (400). The second gear (500) is used to connect to the transmission unit. An adjusting component (600) is movably connected to the base plate (100) and partially passes through the outer cylinder (200). One end of the adjusting component (600) passing through the outer cylinder (200) is connected to the inner cylinder (300) to drive the inner cylinder (300) to move and adjust the engagement or disengagement of the first gear (400) and the second gear (500). The adjustment component (600) includes: A guide member (610) passes through the outer cylinder (200) and connects to the inner cylinder (300); and The shift fork (620) has a first end (621) and a second end (622) opposite to each other. The first end (621) is rotatably connected to the base plate (100), and the second end (622) is connected to the guide member (610). The shift fork (620) is provided with a pressing part (623) for driving the second end (622) to rotate. The guide member (610) drives the inner cylinder (300) to move along the first direction (X) as the second end (622) rotates, so as to realize the meshing or disengagement of the first gear (400) and the second gear (500). The guide (610) includes: A connecting rod (611) is slidably connected to the second end (622) of the shift fork (620) along the first direction (X); and A drive rod (612) is disposed on the connecting rod (611) and passes through the outer cylinder (200) to be fixedly connected to the inner cylinder (300); The outer cylinder (200) is provided with a guide groove (210) that allows the drive rod (612) to slide and extends spirally along the first direction (X); The adjustment assembly (600) further includes: An elastic element (630) is connected to the fork (620) and the base plate (100) respectively to drive the fork (620) to reset.

2. The clutch according to claim 1, characterized in that, The pressing part (623) is hollow, and the elastic element (630) extends into the pressing part (623) and is fixedly connected to the pressing part (623).

3. The clutch according to any one of claims 1 to 2, characterized in that, The clutch also includes: A limiting member is disposed on the base plate (100) and connected to the adjusting assembly (600) to limit the range of movement of the adjusting assembly (600).

4. The clutch according to claim 3, characterized in that, The limiting component includes: A limiting plate (700) is provided with a limiting groove (710), and the adjusting component (600) is partially slidably connected in the limiting groove (710) to limit the movement range of the adjusting component (600).

5. The clutch according to any one of claims 1 to 2, characterized in that, Both the first gear (400) and the second gear (500) are bevel gears with triangular tooth profiles.

6. A medical drive device, characterized in that, The medical drive device includes: The clutch as described in any one of claims 1 to 5; A drive mechanism (800) is disposed on the clutch and connected to the first gear (400) to drive the first gear (400) to rotate; and A connecting shaft (900) is disposed on the base plate (100) of the clutch. One end of the connecting shaft (900) is connected to the second gear (500) of the clutch, and the other end is used to connect to the moving structure to drive the moving structure to move.

7. An intravascular ultrasound diagnostic instrument, characterized in that, The intravascular ultrasound diagnostic instrument includes: A catheter having a detection end that extends into a blood vessel and a driving end disposed opposite to the detection end; and The medical drive device as claimed in claim 6, wherein the connecting shaft (900) of the medical drive device is connected to the drive end of the catheter to drive the catheter to move.

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