CN115153626A

CN115153626A - Ultrasonic three-dimensional scanning probe

Info

Publication number: CN115153626A
Application number: CN202210763559.4A
Authority: CN
Inventors: 刘西耀; 刘鑫; 王自尊; 王凯; 张艺; 张琳
Original assignee: Chengdu Stork Healthcare Technology Co ltd
Current assignee: Chengdu Stork Healthcare Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-11

Abstract

The invention discloses an ultrasonic three-dimensional scanning probe, which comprises a two-dimensional sound head, a slider, a double-guide-rail module, a transmission assembly, a control cabin and a wedge-shaped shell, wherein the double-guide-rail module drives the slider and the two-dimensional sound head to do linear reciprocating motion along the direction of a lead screw so as to realize the three-dimensional scanning of the ultrasonic probe; the double-guide-rail module is connected with the conveying assembly, the conveying assembly sends out an instruction through the control cabin to realize movement, and the control cabin is connected with the outer portion of the wedge-shaped shell in a wireless or wired mode. The invention provides a three-dimensional ultrasonic probe, aiming at providing a brand-new determination scheme for determining a reference position point.

Description

Ultrasonic three-dimensional scanning probe

Technical Field

The invention relates to the field of medical instruments, in particular to an ultrasonic three-dimensional scanning probe.

Background

With the improvement of modern diagnosis and treatment level and the progress of an ultrasonic imaging technology, a three-dimensional volume imaging technology gradually enters the field of clinical diagnosis, is similar to bladder scanning, fetal monitoring, vascular plaque detection and the like, replaces a traditional two-dimensional sectional view, and provides better scanning service for a patient, the three-dimensional volume imaging technology can present human tissues in a scanning area in a three-dimensional view mode, all pathological tissues can be generally covered, the dependence on a doctor skill is less, more pathological tissues can be seen in one-time scanning, and a doctor can diagnose the pathological tissues more accurately by using the three-dimensional imaging view.

The prior art patent number is CN208958162U: the invention discloses a three-dimensional ultrasonic probe, which comprises a transducer, a motor, a swing control mechanism for controlling the transducer to swing back and forth and a detection device for determining a reference position point of the transducer; the swing control mechanism is connected with the motor through a transmission shaft, the detection device comprises a detection piece and a trigger piece arranged on the transmission shaft, and the trigger piece triggers the detection piece once every time the transmission shaft rotates one circle. The invention provides a three-dimensional ultrasonic probe, aiming at providing a brand-new determination scheme for determining a reference position point.

The prior art patent number is CN208551848U: a three-dimensional ultrasonic imaging probe comprises a base, a sound-transmitting cover and a coupling liquid expansion and contraction compensation mechanism; the top of the base is provided with a base liquid flowing port; the sound-transmitting cover is arranged at the bottom of the base; the base and the sound-transmitting cover are surrounded to form a coupling liquid sealed space which is closed; the coupling liquid expansion and contraction compensation mechanism comprises a sleeve, a guide pipe and a piston; the sleeve is fixedly arranged above the base, and the top of the sleeve is provided with a sleeve liquid flow port; two ends of the conduit are respectively connected with the base liquid flow port and the sleeve liquid flow port; the piston is slidably arranged in the sleeve and divides the inner space of the sleeve into an upper part and a lower part, wherein the upper part is an expansion compensation space which is communicated with a sleeve liquid flow port; the coupling liquid sealing space, the expansion compensation space and the guide pipe form an integral sealing space with good sealing performance. The coupling liquid expansion and contraction compensation mechanism can realize the self-adaptive adjustment of the internal pressure of the coupling liquid.

It follows from this that the drawbacks of the prior art are: 1. limited superficial tissue imaging area; 2. a visual blind area is caused by the design defect of a mechanical structure; 3. the probe cannot effectively contact with the position of the patient; 4. the scanning angle is not flexible; 5. there are artifacts in practical use.

Disclosure of Invention

In view of the above problems in the prior art, the present invention is directed to overcome the drawbacks in the prior art, and provides an ultrasonic three-dimensional scanning probe including a housing and a two-dimensional acoustic head mounted in the housing, the two-dimensional acoustic head facing a bottom surface of the housing and being driven by a driving assembly, including:

the driving assembly comprises a control cabin and a sliding rail;

a stepping motor and a transmission assembly are installed in the control bin, and the stepping motor drives a two-dimensional sound head installed on the sliding rail to move along the sliding rail through the transmission assembly;

the control bin is adjacent to a first side wall of the shell, the slide rail is positioned on one side, away from the first side wall, of the control bin, and the far end of the slide rail is adjacent to a second side wall opposite to the first side wall; the first side wall has a greater height than the second side wall, and the top of the housing extends from the second side wall to the first side wall.

Preferably, the slide rail is a double-guide rail module, the double-guide rail module is provided with two lead screw slide rails which are arranged in parallel, and the two-dimensional sound head is in threaded fit with the lead screw slide rails.

Preferably, the two-dimensional sound head is installed on an eccentric slider, the eccentric slider is provided with two sliding threaded holes, the left lead screw and the right lead screw respectively penetrate through the two threaded holes, and when the left lead screw and the right lead screw rotate simultaneously, the eccentric slider is driven to start sliding on the lead screws through the sliding threaded holes, so that the two-dimensional sound head is driven to move.

Preferably, the top surface of the shell is divided into a first top surface adjacent to the first side wall, a second top surface adjacent to the second side wall and a transition surface between the first top surface and the second top surface, the distance between the first top surface and the bottom surface is less than 15 centimeters, and the included angle between the transition surface and the ground is 0-45 degrees.

Preferably, the length of the first top surface is more than 5cm.

Preferably, the distance between the second top surface and the bottom surface is less than 6cm.

Preferably, be provided with the erroneous tendency module on the two-dimensional sound head, the erroneous tendency module is including giving steering motor, sound head deflection axle and sound head fixer, the control storehouse can be through control line transmission deflection instruction for steering motor, steering motor drive sound head deflection axle rotates, drives sound head fixer and then drives the two-dimensional sound head is deflected within the 0 to plus or minus 180 scope.

Preferably, the control cabin further comprises a communication module, and the communication module receives an external control command in a wireless or wired mode.

Preferably, the transmission assembly comprises a transmission shaft, a transmission shaft gear and a screw rod slide rail transmission gear, wherein the screw rod slide rail transmission gears are in a group of two, the left screw rod and the right screw rod are respectively fixed with the corresponding screw rod slide rail transmission gears, the screw rod slide rail transmission gears are meshed with the transmission shaft gear, the rotation of the motor drives the transmission shaft to rotate, the transmission shaft drives the transmission shaft gear fixed with the transmission shaft gear to rotate, and the rotation of the transmission shaft gear further drives the two screw rod slide rail transmission gears to rotate simultaneously.

Preferably, the two-dimensional sound head is a two-dimensional array and is always positioned on one side of the central point of the eccentric slider, which is far away from the control cabin, and the material of the two-dimensional probe comprises but is not limited to a PZT thin film material.

Compared with the prior art, the invention has the beneficial effects that:

1. the unique wedge-shaped structure shell thoroughly solves the problem that the traditional three-dimensional probe cannot penetrate into a narrow part of a human body to effectively scan, and the left edge of the probe is designed to be thin, so that the left edge of the probe can easily prop into the narrow part to scan.

2. The linear scanning replaces the traditional fan-shaped scanning, can scan a larger superficial area, and solves the problem that the imaging area of superficial tissues is limited.

3. The design of the eccentric slider is matched with the effective scanning area of the left probe, so that the effective scanning area has no blind area, the blind area is completely transferred to the dead space on the right side of the probe, and the problem of visual blind areas caused by the design defects of a mechanical structure is solved.

4. The sound head can carry out controllable and flexible angle deflection along the motion direction, and the angle of the sound head can be adjusted to obtain a better scanning effect at different application positions.

5. The two-dimensional sound head replaces the traditional one-dimensional sound head, so that the influence of the adjacent tissue of a sectional view on the probe in motion is greatly reduced, and the artifact of three-dimensional imaging is effectively reduced.

Description of the drawings:

fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic diagram of a two-dimensional sound head.

Fig. 3 is a front view of the slider.

Fig. 4 is a side view of the slider.

Fig. 5 is a front view of the transmission assembly.

Fig. 6 is a side view of the transmission assembly.

Fig. 7 is a schematic view of a control cabin.

FIG. 8 is a schematic view of a wedge-shaped housing.

Fig. 9 is a schematic view of a slider scan.

FIG. 10 is a schematic view of a one-dimensional probe imaging.

FIG. 11 is a schematic view of two-dimensional probe imaging.

The labels in the figure are: the device comprises a 1-two-dimensional sound head, a 2-slider, a 3-double-guide-rail module, a 4-transmission assembly, a 5-control cabin, a 6-wedge-shaped shell, a 21-eccentric slider, a 22-sliding threaded hole, a 23-control line, a 24-steering motor, a 25-sound head deflection shaft, a 26-sound head fixer, a 41-transmission shaft, a 42-transmission shaft gear, a 43-lead screw sliding rail transmission gear, a 51-stepping motor, a 52-controller and a 53-communication module.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter of the present invention is not limited to the following examples, and any technique realized based on the contents of the present invention is within the scope of the present invention.

Example 1

Fig. 1 is an overall structure diagram of the invention, x, y, z coordinates represent the direction of sound head movement, the horizontal direction of sound head, the vertical direction of sound head scanning respectively, the scheme is composed of a two-dimensional sound head 1, a slider 2, a double-guide rail module 3, a transmission assembly 4, a control cabin 5, and a wedge-shaped shell 6, when a probe scans, a doctor firstly supports the leftmost end of the wedge-shaped shell 6 against the position of a patient tissue to start scanning, the outside sends a scanning command to the control cabin 5 in a wireless or wired mode, the control cabin 5 starts to control an internal motor to rotate to drive the transmission assembly 4 to move, the transmission assembly 4 then drives the double-guide rail module 3 to start rotating, and the slider 2 and the two-dimensional sound head 1 driven by the double-guide rail module 3 perform linear reciprocating motion along the direction of a screw rod, so as to form three-dimensional scanning.

Fig. 2 is a schematic diagram of a two-dimensional acoustic head 1, which is an M × N two-dimensional array, and the acoustic head moves along the x direction and continuously performs two-dimensional scanning imaging on the y and z directions, and the material of the acoustic head includes, but is not limited to, thin film materials such as PZT.

Fig. 3 is a front view of the slider 2, and fig. 4 is a side view of the slider 2, which is composed of an eccentric slider 21, a sliding screw hole 22, a control wire 23, a steering motor 24, a sound head deflection shaft 25, and a sound head holder 26, wherein the eccentric slider 21 has two sliding screw holes 22, and left and right lead screws respectively pass through the two screw holes 22. When the left and right screw rods rotate simultaneously, the eccentric slider 21 is driven to slide on the screw rods through the sliding threaded holes 22, so as to drive the sound head fixer 26 to move.

Fig. 5 is a front view of the transmission assembly 4, fig. 6 is a side view of the transmission assembly 4, the transmission assembly 4 is composed of a transmission shaft 41, a transmission shaft gear 42 and a lead screw slide rail transmission gear 43, wherein the lead screw slide rail transmission gear 43 is a set of two, and the left and right lead screws respectively penetrate through the two lead screw slide rail transmission gears 43 and are fixed with the lead screw slide rail transmission gears 43. The rotation of the motor drives the transmission shaft 41 to rotate, the transmission shaft 41 drives the transmission shaft gear 42 fixed with the transmission shaft 41 to start rotating, the rotation of the transmission shaft gear 42 further drives the two screw rod slide rail transmission gears 43 to rotate simultaneously, and finally drives the left and right screw rods respectively bound with the screw rod slide rail transmission gears 43 to rotate.

Fig. 7 shows that the control cabin 5 is composed of a stepping motor 51, a controller 52, and a communication module 53, the communication module 53 receives an external control command in a wireless or wired manner, and transmits the external control command to the controller 52, after the controller 52 receives the command, the controller starts a corresponding scanning control program according to the control information, and controls the stepping motor 51 to scan according to a set flow, the stepping motor 51 rotates to drive the front transmission shaft to rotate together with the control cabin 5, and the control cabin 5 can transmit a deflection command to the steering motor 24 through a control line 23, and the steering motor 24 controls the sound head deflection shaft 25 to rotate, and drives the sound head fixer 26 to deflect at a certain angle.

Fig. 8 is the wedge shell, it is human body contact surface to add thick curve in the picture, the left part shell of wedge shell adopts frivolous material and design to have the radian that is not more than 45, increase the human comfort of contact, wedge structural design has been adopted and the problem of looking into is effectively swept in order to solve the unable narrow position of deep human body of three-dimensional probe, because probe left edge design is very thin, can easily support into narrow position and sweep and look into, mechanical transmission has been integrated in the right part of wedge shell, units such as motor control, there is the probe handle that conveniently holds in the design of probe right side.

Example 2

Fig. 9 is a scanning process of the slider, the slider adopts an eccentric design, so that the slider 2 and the two-dimensional acoustic head 1 are not positioned on a vertical line in the z direction, the two-dimensional acoustic head 1 is always positioned on the left side of the slider 2, when the slider 2 moves to the leftmost side of the probe, the left edge of the probe cannot be touched due to the limitation of the lead screw fixing piece, and the left edge of the probe can be just touched due to the fact that the two-dimensional acoustic head 2 is positioned to the left side of the slider 2, so that a scanned image can effectively cover the leftmost edge of the probe, and thus, the left edge of the probe does not have a blind area.

As shown by a dotted line slider shown in FIG. 9, the right edge of the probe is designed with enough lead screw length, when the slider 2 slides to the right edge of the probe, the left two-dimensional sound head 2 just can cover the rightmost edge of the effective scanning area, so that the right edge of the probe does not have a blind area, and the problem of left and right blind areas is thoroughly solved.

Example 3

The section imaging performed by the conventional traditional one-dimensional sound head can be influenced by objects on the left side and the right side of the section to cause image artifacts, and the details of the human tissue after three-dimensional reconstruction are seriously influenced, for example, the reconstructed image can connect two patient tissues together to cause misdiagnosis, and the two-dimensional sound head imaging can effectively reduce the influence on the left side and the right side of the section imaging, so that the artifacts of a section image are greatly reduced, as shown in fig. 10 and 11, when a probe slides through two adjacent and close patient tissues along the x direction, the two-dimensional sound head can effectively reduce the artifacts on the two sides, and can clearly separate the two patient tissues, so that the purpose of reducing the image artifacts through the two-dimensional sound head can be realized.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. An ultrasonic three-dimensional scanning probe comprising a housing and a two-dimensional acoustic head mounted within the housing, the two-dimensional acoustic head being directed towards a bottom surface of the housing and being driven by a drive assembly, characterized in that:

the driving assembly comprises a control cabin and a sliding rail;

2. The ultrasonic three-dimensional scanning probe according to claim 1, wherein the slide rail is a dual-guide rail module, the dual-guide rail module has two lead screw slide rails arranged in parallel, and the two-dimensional sound head is in threaded fit with the lead screw slide rails.

3. The ultrasonic three-dimensional scanning probe according to claim 2, wherein the two-dimensional sound head is mounted on an eccentric slider, the eccentric slider has two sliding threaded holes, the left and right lead screws respectively pass through the two threaded holes, and when the left and right lead screws rotate simultaneously, the sliding threaded holes drive the eccentric slider to slide on the lead screws, so as to drive the two-dimensional sound head to move.

4. The ultrasonic three-dimensional scanning probe of claim 1, wherein the top surface of the housing is divided into a first top surface adjacent to the first side wall, a second top surface adjacent to the second side wall, and a transition surface between the first top surface and the second top surface, the distance between the first top surface and the bottom surface is less than 15 cm, and the angle between the transition surface and the ground surface is 0-45 degrees.

5. The ultrasonic three-dimensional scanning probe according to claim 4, wherein the length of the first top surface is more than 5cm.

6. The ultrasonic three-dimensional scanning probe according to claim 4, characterized in that the distance between the second top surface and the bottom surface is less than 6cm.

7. The ultrasonic three-dimensional scanning probe according to claim 1, wherein a deflection module is disposed on the two-dimensional sound head, the deflection module comprises a steering motor, a sound head deflection shaft and a sound head fixer, the control chamber can transmit a deflection command to the steering motor through a control line, the steering motor drives the sound head deflection shaft to rotate, and drives the sound head fixer to further drive the two-dimensional sound head to deflect within a range of 0 ° to plus or minus 180 °.

8. The ultrasonic three-dimensional scanning probe according to claim 6, wherein the two-dimensional sound head is a two-dimensional array always located on the side of the central point of the eccentric slider far from the control cabin, and the material of the two-dimensional probe includes but is not limited to a thin film material of PZT.

9. The ultrasonic three-dimensional scanning probe of claim 1, wherein the control chamber further comprises a communication module, and the communication module receives external control commands in a wireless or wired manner.

10. The ultrasonic three-dimensional scanning probe according to claim 1, wherein the transmission assembly comprises a transmission shaft, a transmission shaft gear and a lead screw slide transmission gear, wherein the lead screw slide transmission gear is two in group, the left and right lead screws are respectively fixed with the corresponding lead screw slide transmission gears, the lead screw slide transmission gears are engaged with the transmission shaft gear, the rotation of the motor drives the transmission shaft to rotate, the transmission shaft drives the transmission shaft gear fixed with the transmission shaft to rotate, and the rotation of the transmission shaft gear further drives the two lead screw slide transmission gears to rotate simultaneously.