Bladder capacity three-dimensional measuring probe

Abstract

The utility model belongs to the technical field of bladder capacity measuring mechanisms, in particular to a bladder capacity three-dimensional measuring probe, which mainly comprises a sound head, a control circuit, a lower motor and an oil pipe, the lower motor is connected with the sound head and drives an electronic array in the sound head to rotate, the oil pipe is communicated with an inner cavity of the sound head, and the control circuit is connected with the oil pipe. The control circuit is electrically connected with the electronic array and the lower motor; the sound head is composed of an electronic array and a sound transmission cover, and oil is contained in the sound head. The electronic array is formed by deploying a plurality of single array elements on an arc-shaped sector, and the sound transmission cover covers the exterior of the sector; the lower motor drives the electronic array to rotate step by step; the control circuit is provided with a channel control unit, a transmitting and receiving unit, a motor control unit and a power supply. Compared with a traditional bladder capacity three-dimensional probe, the bladder capacity three-dimensional probe has the advantages of being free of swinging vibration feeling, longer in service life, faster in frame frequency, faster in measurement, smaller in mechanical noise and smaller in power consumption.

Description

Technical Field

[0001] This utility model belongs to the technical field of bladder capacity measurement mechanism, and in particular, a three-dimensional bladder capacity measurement probe. Background Technology

[0002] Currently available bladder capacity measurement instruments use a 3D bladder capacity measurement probe containing two stepper motors. An upper motor drives the ultrasonic transducer to oscillate via a mechanical transmission structure, while a lower motor (2) drives the upper motor to rotate. The upper motor is responsible for oscillating the ultrasonic transducer approximately 120° back and forth, forming a single scanning section, which can acquire a cross-sectional image of the bladder. The lower motor (2) rotates from 0° to 165°, driving the upper motor to rotate, pausing every 15° to allow the upper motor to complete one cycle of the ultrasonic transducer's oscillation before starting the next rotation. In this way, the lower motor (2) provides a scanning section at angles of 0°, 15°, ..., 165°, dividing the bladder into 12 equal sections. After 3D modeling, the bladder capacity is calculated, yielding urine volume and determining whether the patient needs to urinate.

[0003] However, such an upper-mounted motor drives the ultrasonic transducer to swing through a mechanical transmission structure, which has disadvantages such as swinging vibration, short service life, slow scanning speed leading to low frame rate, easy mechanical noise, and high power consumption. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a three-dimensional bladder capacity measurement probe, which removes the upper motor, mechanical transmission structure and ultrasonic transducer of the traditional three-dimensional bladder capacity measurement probe and replaces them with an electronic array. That is, multiple single array elements are deployed on an arc-shaped fan surface, and then the entire electronic array fan surface is driven to rotate by a lower rotating motor to obtain multiple cross-sections of the bladder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A three-dimensional bladder capacity measurement probe mainly consists of a sound head, a control circuit, a lower motor, and an oil tube.

[0007] The lower motor is connected to the sound head and drives the rotation of the electronic array inside the sound head. The oil pipe is connected to the inner cavity of the sound head. The control circuit is electrically connected to the electronic array and the lower motor.

[0008] The sound head consists of an electronic array and a sound-transparent cover, and contains oil inside; the electronic array is composed of multiple single array elements deployed on an arc-shaped fan surface, and the sound-transparent cover covers the outside of the fan surface;

[0009] The lower motor drives the electronic array to rotate gradually;

[0010] The control circuit includes a channel control unit, a transmitter / receiver unit, a motor control unit, and a power supply. The channel control unit selects the channels for transmission and reception. The transmitter / receiver unit transmits ultrasound and receives reflected ultrasound echoes. The motor control unit controls the rotation and pause of the lower motor. The power supply provides high-voltage operating power and control power.

[0011] Furthermore, the electronic array comprises 31 electronic elements, evenly distributed across a 120° sector.

[0012] Furthermore, the lower motor is a stepper motor with a step angle of 3° and a step count of 59, forming 60 facets.

[0013] Furthermore, the control circuit includes a high-voltage switch and related control interfaces.

[0014] Furthermore, the control circuit also includes a probe code for connecting to an external ultrasound device.

[0015] The technical solution of this utility model solves the problems of slow frame rate and low measurement accuracy caused by the excessively dense sampling lines in the first dimension and the excessively sparse sampling lines in the second dimension of the traditional bladder capacity three-dimensional probe. This solution balances the effective utilization rate of the sampling line bundles in both dimensions and further improves the measurement accuracy of bladder capacity by increasing the number of sampling points.

[0016] Compared with traditional bladder capacity 3D probes, the bladder capacity 3D probe of this invention has no oscillating vibration, a longer service life, a faster frame rate, faster measurement, less mechanical noise, and less power consumption. Attached Figure Description

[0017] Figure 1 : A schematic diagram of the structure of the three-dimensional bladder capacity measurement probe of this utility model;

[0018] Figure 2 : Structural cross-sectional view of the bladder capacity three-dimensional measurement probe of this utility model;

[0019] Figure 3 : Block diagram of the electronic array circuit connection of this utility model;

[0020] Figure 4 : A three-dimensional rotating schematic diagram of this utility model;

[0021] Figure 5 : A schematic diagram of the scanning of the three-dimensional bladder capacity measurement probe of this utility model;

[0022] Figure 6 : Block diagram of the control circuit of this utility model;

[0023] Figure 7 : Circuit diagram of the bladder capacity three-dimensional measurement probe of this utility model. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 and Figure 2 As shown, a three-dimensional bladder capacity measurement probe mainly consists of a sound head 1, a control circuit 3, a lower motor 2, and an oil pipe 4. The sound head 1 is composed of an electronic array and a sound-transmitting cover. Multiple single array elements are deployed on an arc-shaped fan-shaped surface to form the electronic array, and the sound-transmitting cover covers the outside of the fan-shaped surface. The lower motor 2 is connected to the sound head 1, and the rotation of the lower motor 2 drives the rotation of the electronic array inside the sound head 1. The radius of curvature of the array in the sound head 1 is R18mm. Figure 1 R20 in the middle indicates that the curvature radius of the sound head 1 array is the curvature radius formed by the blind zone of R18mm+2mm.

[0026] The sound head 1 contains oil, and the oil pipe 4 is connected to the inner cavity of the sound head 1 to store excess oil inside the sound shell, thus avoiding the influence of thermal expansion and contraction on the oil inside the probe.

[0027] The control circuit 3 is electrically connected to the electronic array and the lower motor 2. It includes a high-voltage switch and related control interfaces, and is used to control the selection of the electronic array channels inside the sound head 1.

[0028] like Figure 3 As shown, the electronic array consists of 31 electronic elements, evenly arranged on a 120° sector, with CH16 at the center. The angle between the elements is 3.87°, and the angle from the element to the edge is 1.935°. The elements pass through the reserved holes in the lower motor 2 via signal harnesses and are electrically connected to the high-voltage switch. An external FPGA or ARM control chip selects which elements are connected to the high-voltage transmitter / receiver.

[0029] like Figure 4 and 5 As shown, the lower motor 2 is a stepper motor with a step angle of 3° and a step count of 59, forming 60 cross-sections to scan one bladder cycle.

[0030] like Figure 6 As shown, control circuit 3 includes a channel control unit, a transmitter / receiver unit, a motor control unit, and a power supply. The channel control unit selects the channels for transmission and reception; the transmitter / receiver unit transmits ultrasound and receives the reflected ultrasound echoes; the motor control unit controls the rotation and pause of the lower motor 2. The power supply includes a high-voltage operating power supply and a control power supply, wherein the high-voltage operating power supply is 50V and the control power supply is 5V.

[0031] like Figure 7As shown, the high-voltage switch of control circuit 3 is a single 32-channel HV2901, used for selecting array elements in the electronic array; the relevant control interfaces include transmit / receive interface X1, electronic array element and transmit / receive channel selection control interface X3, and lower motor 2 control line interface X4.

[0032] One end of the X1 transmitter / receiver interface is connected to the HV2901 to transmit and receive ultrasonic echoes, and the other end is connected to the transmitter / receiver channel of the external ultrasonic device of the probe.

[0033] The electronic array element and transmit / receive channel selection control interface X3 is connected to the HV2901 at one end to select which array elements in the electronic array will work (connected to the transmit / receive). The other end is connected to the ultrasound equipment outside the probe for control.

[0034] One end of the control line interface X4 for the lower motor 2 is connected to the lower motor 2 to control its rotation, and the other end is connected to the external ultrasonic equipment of the probe.

[0035] Figure 7 ELE_ARRYA is the electronic array with 31 elements, used for ultrasonic transmission and echo reception; MOTOR is the lower motor 2, used to drive the electronic array to rotate; PRBXH3, PRBXH2, PRBXH1, and PRBXH0 represent probe codes, which are used for ultrasonic equipment detection, sending corresponding control programs, and connecting to the ultrasonic equipment outside the probe.

[0036] Compared to traditional convex electronic arrays, the upper electronic array portion of this 3D bladder capacity measurement probe uses fewer array elements. Traditional convex array probes typically use 80-128 array elements to meet requirements for image resolution and visual observation. However, bladder capacity measurement prioritizes accuracy, while image resolution is not a primary concern. By reducing the number of array elements in the upper electronic array of this probe and increasing the number of bladder cross-sections (from 12 to 60), the required accuracy for bladder capacity measurement can be achieved. The upper motor probe array portion of this probe only requires 31 array elements. Compared to traditional electronic convex array solutions, this probe reduces PCB area and circuit costs. The reduced number of array elements also makes the cost of this top-mounted electronic array probe lower than both traditional electronic convex arrays and traditional top-mounted mechanical sector scan convex array probes for 3D bladder capacity measurement, thus improving overall cost-effectiveness. Compared to traditional 3D bladder capacity measurement probes, this probe reduces power consumption, increasing overall operating time with the same battery capacity. It completely eliminates vibration caused by oscillation, resulting in a longer lifespan, faster frame rate, and lower mechanical noise.

[0037] Compared with traditional 3D bladder capacity measurement probes, this invention increases the number of sampling points, further improving the accuracy of bladder capacity measurement. Traditional 3D bladder capacity measurement probes have an effective scanning angle of 120° using an upper mechanical sector scanner, taking one scan line per 1°, for a total of 120 sampling lines. This probe has 31 electronic array elements, reducing the number of scan lines per scanning section from 120 to 31. This would theoretically affect the measurement accuracy by decreasing the sampling volume in this dimension. To address this issue, the rotation pause angle of the lower motor 2 is reduced, and the lower motor 2 rotates 177°, taking a section sample every 3°. Thus, the lower motor 2 will have a scanning section at angles of 0°, 3°, 6°, 9°, 12°, ..., 177°, dividing the bladder into an average of 60 sections. This significantly increases the number of sampling lines in another dimension, from the traditional 12 sections, ensuring sufficient sampling volume.

[0038] The traditional 3D bladder capacity probe calculates the number of bladder scan lines to be 120 * 12 = 1440.

[0039] The current bladder capacity 3D probe acquisition and calculation shows that the number of bladder scan lines is 31 * 60 = 1860.

[0040] The technical solution of this utility model solves the problems of slow frame rate and low measurement accuracy caused by the excessively dense sampling lines in the first dimension and the excessively sparse sampling lines in the second dimension of the traditional bladder capacity three-dimensional probe. This solution balances the effective utilization rate of the sampling line bundles in both dimensions. Due to the increase in the sampling amount of this solution, the accuracy of bladder capacity measurement is improved.

[0041] The scanning time of the upper electronic array of this bladder capacity 3D measurement probe is 280µs * 31 = 8.68ms (280µs is the time for a single scan line), and the scanning time for the entire bladder is 8.68ms * 60 = 520.8ms. The scanning time of the upper motor-driven transducer of the traditional bladder capacity 3D measurement probe is 1.2ms * 256 = 307ms (1.2ms is the time for a single scan line; too fast a scan line will result in insufficient motor drive capability; the mechanical sector scanning probe does not use the oscillating line number, only 128 of the 256 lines are effective, and the blind areas on both sides must be removed, resulting in a final angle of about 120°, i.e., about 120 lines), and the scanning time for the entire bladder is 307ms * 12 = 3684ms. This bladder capacity 3D measurement probe will have a shorter scanning time for the entire bladder, and will obtain the bladder capacity more quickly.

[0042] Therefore, compared with traditional bladder capacity three-dimensional probes, the bladder capacity three-dimensional probe of this invention has no oscillating vibration, a longer service life, a faster frame rate, faster measurement, less mechanical noise, and less power consumption.

[0043] like Figure 5 As shown, the scanning angle of the bladder capacity three-dimensional measurement probe of this utility model remains unchanged at 120° compared with the traditional probe scanning angle. The angle of each array element is 120° / 31=3.87°, the angle between array elements is 3.87°, and the angle from the array elements on both sides to the edge is 1.935°.

Claims

1. A three-dimensional bladder capacity measurement probe, characterized in that, It mainly consists of a sound head, control circuit, lower motor, and oil pipes. The lower motor is connected to the sound head and drives the rotation of the electronic array inside the sound head. The oil pipe is connected to the inner cavity of the sound head. The control circuit is electrically connected to the electronic array and the lower motor. The sound head consists of an electronic array and a sound-transparent cover, and contains oil inside; the electronic array is composed of multiple single array elements deployed on an arc-shaped fan surface, and the sound-transparent cover covers the outside of the fan surface; The lower motor drives the electronic array to rotate gradually; The control circuit includes a channel control unit, a transmitter / receiver unit, a motor control unit, and a power supply. The channel control unit selects the channels for transmission and reception. The transmitter / receiver unit transmits ultrasound and receives reflected ultrasound echoes. The motor control unit controls the rotation and pause of the lower motor. The power supply provides high-voltage operating power and control power.

2. The bladder capacity three-dimensional measurement probe according to claim 1, characterized in that, The electronic array consists of 31 electronic elements, evenly distributed on a 120° sector.

3. The bladder capacity three-dimensional measurement probe according to claim 1, characterized in that, The lower motor is a stepper motor with a step angle of 3° and a step count of 59, forming 60 facets.

4. The bladder capacity three-dimensional measurement probe according to claim 1, characterized in that, The control circuit includes a high-voltage switch and related control interfaces.

5. A three-dimensional bladder capacity measurement probe according to claim 4, characterized in that, The control circuit also includes a probe code for connecting to an external ultrasound device.

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