WO2014205754A1

WO2014205754A1 - Ultrasonic probe

Info

Publication number: WO2014205754A1
Application number: PCT/CN2013/078281
Authority: WO
Inventors: 曾云泉
Original assignee: 深圳嘉瑞电子科技有限公司
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2014-12-31

Abstract

An ultrasonic probe (10) comprises a base (1), a drive motor (2) with a motor shaft (21), an ultrasonic transducer (3), a rotary shaft (4) and a transmission mechanism (5). The drive motor (2) is fixed to the base (1), the ultrasonic transducer (3) is fixed to the rotary shaft (4), the rotary shaft (4) is rotatably mounted on the base (1), the drive motor (2) drives the rotary shaft (4) to rotate via the transmission mechanism (5), the rotary shaft (4) is transversally arranged, and the motor shaft (21) is longitudinally arranged. The longitudinal arrangement of the motor shaft (21) can effectively reduce the size of the handheld part of the ultrasonic probe (10), thereby eliminating discomfort of a doctor when holding a probe for a long time.

Description

Ultrasonic probe

Technical field

The invention relates to an ultrasonic probe (ultrasound) Probe), especially for a medical ultrasound probe for generating three-dimensional real-time images.

Background technique

Existing ultrasonic probes such as the publication number is CN According to the Chinese patent of 102018531A, the ultrasonic probe includes a motor, a reel, a swing wheel, two ropes, and an ultrasonic transducer (ultrasound) The transducer, also called the acoustic head, is fixed at both ends of the two ropes to the reel and the oscillating wheel respectively. The winding directions of the two ropes are opposite, the oscillating wheel is fixed to the acoustic head, and the oscillating wheel is rotatably mounted on the base through the rotating shaft. Seat, when the motor is working, its power is transmitted to the reel, and the reel is swung by a rope with a sound head within a certain angle range. However, the ultrasonic probe has the following disadvantages: in order to ensure that the ultrasonic transducer obtains a clear image that is clinically required, the amplitude of the swing of the ultrasonic transducer within a certain angle must not be lower than a certain set value, which requires Drive motor holding torque (holding The torque is large enough, so the smaller size of the motor cannot be used on the product, which results in a larger lateral dimension of the ultrasonic probe, which causes serious discomfort to the doctor when holding the probe.

Summary of the invention

The present invention provides an ultrasonic probe that is comfortable to use.

The invention provides an ultrasonic probe, comprising a base, a driving motor with a motor shaft, an ultrasonic transducer, a rotating shaft and a transmission mechanism, the driving motor is fixed to the base, the ultrasonic transducer and the rotating shaft Fixedly, the rotating shaft is rotatably mounted on the base, the driving motor drives the rotating shaft to rotate by the transmission mechanism, the rotating shaft is laterally disposed, the motor shaft is longitudinally disposed, and the transmission mechanism includes a reel a swinging wheel and a rope, the reel being coupled to the motor shaft, the oscillating wheel being fixed to the ultrasonic transducer, the rope having a central portion, a head leading from the opposite direction of the central portion, and a tail portion, the middle portion is fixed on the reel, and the head portion and the tail portion are both fixed to the swinging wheel, and the rope is swung with the swinging wheel when the driving motor is in operation.

The motor shaft is set longitudinally, which is equivalent to the longitudinal setting of the drive motor.

The reel is connected to the motor shaft, not only that the reel can be directly fixed to the motor shaft, but also that the reel is connected to the motor shaft through other components or mechanisms.

The middle portion of the rope is wound around the orbiting wheel, the head and the tail are wound around the swinging wheel, and the winding direction of the head and the tail is opposite. The winding distance can be one turn or at least two turns (ie multiple turns) or less than one turn. For the oscillating wheel, a clockwise direction and a counterclockwise direction can be defined, and the winding direction is opposite, which means that one is wound in a clockwise direction and the other is wound in a counterclockwise direction.

The circumferential surface of the oscillating wheel is provided with a receiving groove, and the head and the tail are both wound along the receiving groove by a certain distance. For oscillating wheels, the winding distance is generally less than one turn.

The circumferential surface of the oscillating wheel is generally not a complete circumferential surface, that is, it may be a poor arc or a superior arc shape.

The circumferential surface of the reel is provided with a receiving groove, and the middle portion is wound a plurality of times along the receiving groove.

By arranging the receiving groove on the reel and the oscillating wheel, the rope is entangled and is not easily detached.

The rotation axis of the reel is perpendicular to the rotation axis of the rotating shaft, and the transmission mechanism further includes a first pulley and a second pulley, wherein the first pulley and the second pulley are rotatably mounted through respective pulley central axes In the base, the head is fixed to the swing wheel after bypassing the first pulley, and the tail is fixed to the swing wheel after bypassing the second pulley.

The reel is rotatably mounted to the base through a central axis of the reel, and the central axis of the reel may be a motor shaft or may be independent of the motor shaft. The rotation axis of the reel is perpendicular to the rotation axis of the rotation shaft, that is, the center axis of the reel is perpendicular to the rotation axis.

The reel, the first pulley and the second pulley are distributed in a triangle or in a straight line. Typically, the first pulley and the second pulley are located on a side of the reel that is adjacent to the oscillating wheel. In addition, in order to reduce the friction of the rope during the transmission process, the first pulley and the second pulley have some misalignment in the three dimensions of X, Y and Z.

The axes of rotation of the first pulley and the second pulley are both parallel to the axis of rotation of the reel. That is, it can be considered that the rotation axes of the center axes of the pulleys of the first and second pulleys are both parallel to the rotation axis of the reel, and it is also considered that the center axis of the pulley is parallel to the central axis of the reel. At this time, after the rope bypasses the first and second pulleys, it needs to be twisted and then wound onto the swinging wheel.

The axes of rotation of the first pulley and the second pulley are both perpendicular to the axis of rotation of the reel. That is, it can be considered that the rotation axes of the center axes of the pulleys of the first and second pulleys are both perpendicular to the rotation axis of the reel, and it is also considered that the center axis of the pulley is perpendicular to the central axis of the reel, such as the opposite sides. At this time, after the rope is wound on the reel, it needs to be twisted and then wound onto the first and second pulleys.

The reel is fixedly connected to the motor shaft, and the reel can be directly fixed on the motor shaft, or the reel can be fixed on the central axis of the reel and the central axis of the reel is fixedly connected with the motor shaft. .

The reel is coupled to the motor shaft through a speed reduction mechanism.

The reel is coupled to the motor shaft by a timing belt drive mechanism.

The motor shaft and the rotating shaft are perpendicular.

The beneficial effects of the invention are as follows: 1) The longitudinal arrangement of the motor shaft can effectively reduce the size of the hand-held portion of the ultrasonic probe, thereby eliminating the discomfort of the doctor holding the probe for a long time. 2) By providing a pair of pulleys in the transmission mechanism, the pair of pulleys function to change the spatial dimension of the rope displacement, so that the displacement plane of the rope is twisted, thereby realizing the longitudinal setting of the drive motor.

附图说明 DRAWINGS

1 is a schematic diagram of an application scenario of an ultrasonic probe according to the embodiment;

2 is a schematic structural view of an ultrasonic probe of the embodiment;

3 is a schematic structural view of a transmission mechanism of the present embodiment;

4 is a schematic structural view showing a first connection relationship between a motor shaft and a reel;

Figure 5 is a schematic structural view showing the second connection relationship between the motor shaft and the reel;

6 is a schematic structural view showing a third connection relationship between a motor shaft and a reel;

Figure 7 is a structural schematic view showing the first positional relationship between the central axis of the pulley and the central axis of the reel;

Figure 8 is a structural schematic view showing the second positional relationship between the central axis of the pulley and the central axis of the reel;

Fig. 9 is a structural schematic view showing the third positional relationship between the central axis of the pulley and the central axis of the reel.

detailed description

As shown in FIGS. 1 to 9, the ultrasonic probe 10 includes a base 1, a drive motor 2 with a motor shaft, an ultrasonic transducer 3, a rotating shaft 4, and a transmission mechanism 5. The drive motor 2 is fixed to the base 1, and its power is output through the motor shaft 21. The ultrasonic transducer 3 is fixed to the rotating shaft 4, and the rotating shaft 4 is rotatably mounted to the base 1. The drive motor 2 is rotated by the transmission mechanism 5 with the ultrasonic transducer 3. The rotating shaft 4 is laterally disposed, and the motor shaft 21 is longitudinally disposed. In use, the ultrasonic probe is hand-held to bring the probe tip into contact with the patient's skin surface 8 to obtain an image of the human tissue 9. The transverse direction is a direction substantially parallel to the surface of the skin, and the longitudinal direction is a direction substantially perpendicular to the surface of the skin.

As shown in FIGS. 1 to 4, the ultrasonic probe of the present embodiment includes a base 1, a drive motor 2, an ultrasonic transducer 3, a rotating shaft 4, and a transmission mechanism 5.

The base 1 encloses a hollow receiving cavity 11. The drive motor 2 is fixed in the housing chamber 11 and has a motor shaft 21 disposed longitudinally. The ultrasonic transducer 3 is rotatably mounted in the housing chamber 11 via the rotating shaft 4. The transmission mechanism 5 includes a reel 51, a first pulley 52, a second pulley 53, a rope 54, and a swinging wheel 55. The reel 51 is rotatably mounted in the receiving cavity 11 by the reel central shaft 56, which is rotated by the motor shaft 21. The reel central axis 56 is perpendicular to the rotating shaft 4. The first pulley 52 and the second pulley 53 are rotatably mounted in the housing chamber 11 through respective pulley central axes. The cord 54 has a central portion 541 and a head portion 542 and a tail portion 543 respectively located on both sides of the middle portion, the middle portion 541 being wound on the reel 51 in a manner that does not cause relative sliding, and the head portion 542 and the tail portion 543 are drawn from the opposite direction of the middle portion. The head 542 first bypasses the first pulley 52, and then twists and wraps around the oscillating wheel 55; the tail 543 first bypasses the second pulley 53, and then twists and wraps around the oscillating wheel 55; finally, the head 542 and the tail 543 are both It is fixed to the swing wheel 55. The winding direction of the head portion 542 and the tail portion 543 on the oscillating wheel 55 is opposite. When the driving motor 2 is in operation, the rope 54 can be swung with the oscillating wheel 55 and the ultrasonic transducer 3 within a certain angular range.

The circumferential surface of the reel 51 may be provided with a receiving groove 511 along which the central portion 541 of the rope is wound. The circumferential surface of the oscillating wheel 55 may be provided with a receiving groove 551, and the head portion 542 and the tail portion 542 are wound a certain distance along the receiving groove 551 and then fixed.

As shown in Figure 4, it represents the first type of connection of the reel and the motor shaft. The reel central axis 56 is coaxial with the motor shaft 21, and may be a reel reel central axis, that is, a motor shaft; or the reel central axis may be independent of the motor shaft but fixedly connected integrally, such as through a coupling; The reel is equivalent to the reel can be rotatably mounted in the receiving cavity through the motor shaft. The axis of rotation of the reel is the axis of rotation of the motor shaft, ie the central axis of the motor shaft.

As shown in Fig. 5, it shows the second connection of the reel and the motor shaft. The reel is rotatably mounted in the receiving cavity of the base through the reel central shaft 56. The reel central axis 56 is independent of the motor shaft 21, and the rotation axis of the reel is the rotation axis of the reel central axis. The reel central shaft 56 and the motor shaft 21 are parallel and spaced apart. The reel central shaft 56 and the motor shaft 21 are connected by a timing belt transmission mechanism 6, which includes a front stage timing pulley 61, a rear stage timing belt pulley 62 and a timing belt 63, and the front stage timing belt pulley 61 is fixed. On the motor shaft 21, the rear timing pulley 62 is fixed to the reel central shaft 56, and the timing belt 63 is tightened on the front timing pulley 61 and the rear timing pulley 62.

As shown in Figure 6, it represents a third way of connecting the reel to the motor shaft. The reel 51 is rotatably mounted in the receiving cavity by a reel central shaft 56. The reel center axis is independent of the motor shaft, and the rotation axis of the reel is the rotation axis of the reel central axis. The reel central axis and the motor shaft are parallel and spaced apart. The reel central axis and the motor shaft are connected by a speed reduction mechanism 7.

As shown in Fig. 7, it shows the first positional relationship of the first pulley, the second pulley and the reel. The center axis of the pulleys of the first and second pulleys is parallel to the central axis 56 of the reel. The reel central axis can be a motor shaft or it can be independent of the motor shaft. After the rope bypasses the first and second pulleys, it needs to be twisted in space and then wound onto the oscillating wheel 55.

As shown in Fig. 8, it shows the second positional relationship of the first pulley, the second pulley and the reel. The center axis of the pulleys of the first and second pulleys is perpendicular to the central axis 56 of the reel. In this case, the rope is first wound around the reel 51, and after being spatially twisted, it is wound around the first pulley 52 and the second pulley 53, respectively, and finally it is not necessary to twist when wound around the oscillating wheel 55.

As shown in Fig. 9, it shows a third positional relationship of the first pulley, the second pulley and the reel. The central axis of the pulleys of the first and second pulleys is neither perpendicular to the central axis 56 of the reel nor parallel to the central axis of the reel, but has other spatial positional relationships, such as the center axis of the pulley relative to the center of the reel The axis is tilted, that is, there may be an angle between the two.

For the ultrasonic probe, it has a motor shaft and a rotating shaft fixed to the ultrasonic transducer, and the motor shaft drives the ultrasonic transducer and the rotating shaft to rotate. The motor shaft is set longitudinally and the shaft is set horizontally. The motor shaft can be perpendicular or at an angle to the shaft. When the motor shaft and the rotating shaft are perpendicular, the two can intersect face to face or the opposite faces do not intersect.

For the ultrasonic probe, the transmission mechanism includes a reel which is rotatably mounted on the base through the central axis of the reel, and the central axis of the reel can be perpendicular to the rotating shaft. At this time, the rope needs to be twisted during the winding process. In order to facilitate the twisting, the first pulley and the second pulley may be provided. Of course, the central axis of the reel can also be parallel to the rotating shaft, so that the rope can be twisted without being spatially. At this time, the power of the motor shaft is reversed by the reversing mechanism and output to the reel. The rope connecting the reel and the oscillating wheel can be set to one or two.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. A number of simple derivations or substitutions may be made by those skilled in the art without departing from the inventive concept.

Claims

An ultrasonic probe includes a base, a driving motor with a motor shaft, an ultrasonic transducer, a rotating shaft and a transmission mechanism, the driving motor is fixed to the base, and the ultrasonic transducer is fixed to the rotating shaft The rotating shaft is rotatably mounted on the base, and the driving motor drives the rotating shaft to rotate by the transmission mechanism. The rotating shaft is laterally disposed, wherein the motor shaft is longitudinally disposed, and the transmission mechanism includes a winding. a wheel, an oscillating wheel and a rope, the reel being coupled to the motor shaft, the oscillating wheel being fixed to the ultrasonic transducer, the rope having a central portion and a head leading from the opposite direction of the central portion And a tail portion, the middle portion is fixed on the reel, and the head portion and the tail portion are both fixed to the swinging wheel, and the rope is swung with the swinging wheel when the driving motor is in operation.
The ultrasonic probe according to claim 1, wherein a middle portion of the rope is wound around the orbiting wheel, and both the head and the tail are wound around the swinging wheel, and a winding direction of the head and the tail portion in contrast.
The ultrasonic probe according to claim 2, wherein the circumferential surface of the oscillating wheel is provided with a receiving groove, and both the head and the tail are wound along the receiving groove by a certain distance.
The ultrasonic probe according to claim 2, wherein the circumferential surface of the reel is provided with a receiving groove, and the middle portion is wound one or more times along the receiving groove.
The ultrasonic probe according to any one of claims 1 to 4, wherein the rotation axis of the reel is perpendicular to the rotation axis of the rotation shaft, and the transmission mechanism further includes a first pulley and a second pulley The first pulley and the second pulley are rotatably mounted to the base through respective pulley central axes, and the head is fixed to the swing wheel after bypassing the first pulley, and the tail bypasses The second pulley is fixed to the swing wheel.
The ultrasonic probe according to claim 5, wherein the reel, the first pulley, and the second pulley are distributed in a triangular shape or in a straight line.
The ultrasonic probe according to claim 5, wherein the rotation axes of the first pulley and the second pulley are both parallel to the rotation axis of the reel.
The ultrasonic probe according to claim 5, wherein the rotation axes of the first pulley and the second pulley are both perpendicular to the rotation axis of the reel.
The ultrasonic probe according to claim 1, wherein said reel is fixedly coupled to said motor shaft.
The ultrasonic probe according to claim 1, wherein said reel is coupled to said motor shaft via a speed reduction mechanism.
The ultrasonic probe according to claim 1, wherein said reel is coupled to said motor shaft via a timing belt transmission mechanism.
The ultrasonic probe according to claim 1, wherein said motor shaft and said rotating shaft are perpendicular.