CN114391931A - A Multi-lumen Puncture Device Based on Ultrasound Guidance - Google Patents

Abstract

The invention discloses a multi-cavity puncture device based on ultrasonic guidance, which comprises a bed body, a positioner and a puncture needle, wherein two vertical plates are arranged on the right side of the bed body, the puncture needle is fixed between the two vertical plates through the positioner, the positioner comprises a base, a magnet exciting coil, a first permanent magnet, a half shaft, a first sleeve, a second sleeve and a friction block, the magnet exciting coil and the first permanent magnet are arranged at the bottom of the base, the magnet exciting coil is connected with a power supply device through an electric brush, a magnetic field generated after the magnet exciting coil is electrified drives the magnet exciting coil and the first permanent magnet to rotate relatively, the magnet exciting coil and the first permanent magnet are respectively connected with one half shaft, the half shaft is rotatably connected with the base, the half shaft is slidably connected with the first sleeve, the first sleeve is in threaded connection with the second sleeve, the second sleeve is fixedly connected with the base, and the end part of the first sleeve is provided with the friction block. Medical personnel can more freely adjust the puncture needle, and after the puncture needle is adjusted, the puncture needle is fixed at any angle and any position, so that the positioning accuracy of the puncture needle is improved.

Description

A multi-lumen puncture device based on ultrasound guidance

technical field

The invention relates to the technical field of medical equipment, in particular to a multi-chamber puncture device based on ultrasound guidance.

Background technique

The accuracy of puncture can be improved under the guidance of ultrasonic guidance. When using multi-cavity puncture to puncture a patient, medical staff need to hold the puncture needle to carry out. In the prior art, a positioning device is set on the bed to fix the puncture needle. For example, Chinese Patent Publication No. CN212261464U discloses a thoracolumbar puncture positioning device, which includes a bed body and a puncture needle, and a fixed block, a movable block, an L-shaped rod and a positioning block are arranged on the right side of the bed body. The positioning device solves the problem that the prior art does not have a positioning device to position the puncture needle during the puncture process, and the shaking of the puncture needle easily increases the pain of the patient. However, during operation, it is necessary to operate various movable parts to adjust the angle and position of the puncture needle. The puncture needle is bound by various components, which makes it inconvenient to move the puncture needle freely, which causes a lot of inconvenience when puncturing under the guidance of ultrasonic waves.

SUMMARY OF THE INVENTION

In view of the above prior art, the present invention is to provide a multi-chamber puncture device based on ultrasonic guidance, medical staff can adjust the puncture needle more freely. After the puncture needle is adjusted, the puncture needle can be fixed at any angle and any position, which improves the positioning accuracy.

The technical scheme of the present invention is realized as follows:

A multi-chamber puncture device based on ultrasonic guidance, comprising a bed body, a positioner and a puncture needle, two vertical plates are arranged on the right side of the bed body, and the puncture needle is fixed on the two positions by the positioner. Between the vertical plates, the positioner includes a base, an excitation coil, a first permanent magnet, a half shaft, a first sleeve, a second sleeve and a friction block, and the excitation coil is provided at the bottom of the base and the first permanent magnet, the excitation coil is connected to the power supply device through the brush, and the excitation coil generates a magnetic field after being energized to drive the excitation coil and the first permanent magnet to rotate relative to each other, and the excitation coil and the first permanent magnet are respectively is connected with one of the half shafts, the half shafts are rotatably connected with the base, the half shafts are slidably connected with the first sleeve, and the first sleeve is threadedly connected with the second sleeve, The second sleeve is fixedly connected with the base, and the end of the first sleeve is provided with the friction block.

Further, the first sleeve includes a threaded sleeve and a smooth sleeve, the smooth sleeve is connected to the friction block, and the threaded sleeve is provided with an external thread that is threadedly connected to the second sleeve, The end of the threaded sleeve is provided with a rotating shaft, the rotating shaft is inserted into the smooth sleeve, the rotating shaft is rotatably connected with the smooth sleeve, and the rotating shaft needs to overcome the preset requirement when rotating relative to the smooth sleeve. Moment due to contact force or field force.

Further, the smooth sleeve is provided with a second permanent magnet, the rotating shaft is provided with an induction coil, the magnetic flux of the induction coil changes when the rotating shaft rotates, and the terminals of the induction coil are short-circuited.

Further, the induction coil is wound on the iron core.

Further, the smooth sleeve is provided with a chute, the friction block is provided with a sliding rod that slides along the chute, the friction block is provided with an anti-skid structure, and the friction block is made of metal material, so The vertical plate is a metal plate with magnetism.

Further, the friction block includes a first spherical shell, a second spherical shell and a ball head, the first spherical shell is connected with the sliding rod, the inner wall of the first spherical shell is provided with a horizontal arc groove, the The outer wall of the second spherical shell is provided with a horizontal arc-shaped block, the horizontal arc-shaped block is slidably connected with the horizontal arc-shaped groove, the inner wall of the second spherical shell is provided with a vertical arc-shaped groove, and one end of the ball head is A spherical surface, the other end is a contact plane, the spherical surface is provided with a vertical arc-shaped block, the vertical arc-shaped block is slidably connected with the vertical arc-shaped groove, the inner and outer surfaces of the first spherical shell, the second The inner and outer surfaces of the two spherical shells coincide with the spherical center of the spherical surface of the ball head, and the contact plane is located between the spherical center and the second spherical shell.

Further, a slider is provided on the base, the slider is clamped with the puncture needle, and the slider is slidably connected to the base.

Further, the power supply device includes a power supply and a control module with a switch, the power supply is electrically connected to the excitation coil through a control switch, and the control switch is installed on the base.

The beneficial effects of the present invention are:

After the puncture needle is adjusted to an appropriate angle and position, the present invention can drive the two first sleeves to extend to clamp the friction block between the vertical plates when the power is turned on, and the extended length of the first sleeve is adaptive. regulated. For example, when the puncture needle is adjusted to the appropriate angle and position and the distance between the two vertical plates is different, then the protruding lengths of the two first sleeves are different after the excitation coil is energized. Therefore, the present invention can achieve the technical effect of fixing the puncture needle at any angle and any position. When adjusting the angle and position of the puncture needle in the present invention, the positioner does not contact other objects, so that the puncture needle is not bound, and the medical staff can adjust the puncture needle more freely to ensure the accuracy of puncture. In the present invention, after the adjustment of the puncture needle is completed, the power supply device can supply power to the excitation coil to perform fixed positioning, and the operation is convenient. The rotation torque of the two half shafts is the same. When the first sleeve continues to extend after the contact of the two friction blocks, the torque is evenly distributed to the two half shafts, which plays a role in promoting the same rotation of the two first sleeves. , preventing the puncture needle from moving to one side during the clamping process, so as to achieve the technical effect of improving the positioning accuracy of the puncture needle. The rotation directions of the two half shafts are opposite. After the two friction blocks are in contact with the vertical plate, the torques generated by the two half shafts on the puncture needle cancel each other out, thereby preventing the half shafts from driving the puncture needle to rotate and improving the positioning accuracy of the puncture needle. Accuracy.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only preferred embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

1 is a perspective view of a multi-lumen puncture device based on ultrasonic guidance according to the present invention;

Fig. 2 is the perspective view of the puncture needle and the locator of the present invention;

Fig. 3 is the perspective view of the friction block of the present invention;

Fig. 4 is the sectional view of the puncture needle and the positioner of the present invention;

Fig. 5 is the enlarged view of A area in Fig. 4;

In the figure, 1 bed, 2 locator, 3 puncture needle, 4 vertical plate, 5 base, 6 excitation coil, 7 first permanent magnet, 8 half shaft, 9 first sleeve, 10 second sleeve, 11 friction block, 12 electric brush, 13 power supply equipment, 14 threaded sleeve, 15 smooth sleeve, 16 external thread, 17 rotating shaft, 18 second permanent magnet, 19 induction coil, 20 iron core, 21 chute, 22 sliding rod , 23 anti-skid structure, 24 first spherical shell, 25 second spherical shell, 26 ball head, 27 horizontal arc groove, 28 horizontal arc block, 29 vertical arc groove, 30 vertical arc block, 31 contact plane , 32 spherical surface, 33 spherical center, 34 slider, 35 power supply, 36 control switch.

Detailed ways

In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described with reference to the accompanying drawings.

1 to 5 , a multi-chamber puncture device based on ultrasonic guidance includes a bed 1, a positioner 2 and a puncture needle 3. Two vertical plates 4 are provided on the right side of the bed 1, and the puncture The needle 3 is fixed between the two vertical plates 4 by the positioner 2 , and the positioner 2 includes a base 5 , an excitation coil 6 , a first permanent magnet 7 , a half shaft 8 , and a first sleeve 9 , the second sleeve 10 and the friction block 11, the bottom of the base 5 is provided with the excitation coil 6 and the first permanent magnet 7, the excitation coil 6 is connected with the power supply device 13 through the brush 12, the excitation coil 6 After power-on, a magnetic field is generated to drive the excitation coil 6 and the first permanent magnet 7 to rotate relative to each other. The excitation coil 6 and the first permanent magnet 7 are respectively connected with one of the half shafts 8, and the The base 5 is rotatably connected, the half shaft 8 is slidably connected with the first sleeve 9, the first sleeve 9 is threadedly connected with the second sleeve 10, and the second sleeve 10 is connected with the The base 5 is fixedly connected, and the end of the first sleeve 9 is provided with the friction block 11 .

When in use, the patient lies on the bed 1 in a proper position, and the puncture needle 3 is connected to the base 5 of the positioner 2. The puncture needle 3, the positioner 2 and the body part to be punctured by the patient are located on two vertical plates 4 between. In order to keep the patient's posture fixed, the puncture fixing device in the prior art can also be used in combination to fix the patient's posture. Under the guidance of ultrasonic waves, the angle and position of the puncture needle 3 will be adjusted. After the angle and position of the puncture needle 3 are adjusted, the puncture needle 3 will be fixed between the two vertical plates 4 by the positioner 2 . When the positioner 2 is fixed, power is supplied to the excitation coil 6 through the power supply device 13 , and the excitation coil 6 is energized to generate a magnetic field to drive the excitation coil 6 and the first permanent magnet 7 to rotate relative to each other. The power supply device 13 is electrically connected to the exciting coil 6 through the brush 12 , and the power supply device 13 still keeps the exciting coil 6 powered by the power supply device 13 after the exciting coil 6 rotates. The excitation coil 6 and the first permanent magnet 7 constitute a motor, the excitation coil 6 is connected with one half shaft 8, the first permanent magnet 7 is connected with the other half shaft 8, and the two half shafts 8 are driven to rotate in opposite directions after being energized, and The two half shafts 8 rotate with the same torque. The half shaft 8 is slidably connected with the first sleeve 9 , and the first sleeve 9 can slide along the axial direction of the half shaft 8 but cannot rotate relative to the half shaft 8 . The first sleeve 9 is provided with an external thread 16 , the second sleeve 10 is provided with an internal thread, the first sleeve 9 is threadedly connected with the second sleeve 10 , and the second sleeve 10 is fixedly connected with the base 5 . When the half shaft 8 drives the first sleeve 9 to rotate, the first sleeve 9 slides out along the axial direction of the half shaft 8 and pushes the friction block 11 at the end of the first sleeve 9 to contact the vertical plate 4 . When one of the friction blocks 11 is in contact with the vertical plate 4, the torque required for the rotation of the first sleeve 9 connected to the friction block 11 is greater than the torque required for the rotation of the other first sleeve 9. The sleeve 9 stops rotating, and the other first sleeve 9 keeps rotating until the friction blocks 11 of both first sleeves 9 are in contact with the vertical plate 4 . After the two friction blocks 11 are in contact, the rotation torque required for the rotation of the two first sleeves 9 is the same. At this time, the rotating excitation coil 6 and the first permanent magnet 7 drive the two first sleeves 9 to rotate until the positioner 2 is rotated. It is fixed between the vertical plates 4 .

In the present invention, after the puncture needle 3 is adjusted to an appropriate angle and position, the power supply 35 can be turned on to drive the two first sleeves 9 to extend to clamp the friction block 11 between the vertical plates 4. The first sleeve 9 extends The length of the output is adaptively adjusted. For example, the distance between the puncture needle 3 and the two vertical plates 4 is different when the appropriate angle and position are adjusted, then the protruding lengths of the two first sleeves 9 are different after the excitation coil 6 is energized, so as to ensure that the puncture needle 3 remains stationary. Therefore, the present invention can achieve the technical effect of fixing the puncture needle 3 at any angle and any position. In the present invention, when adjusting the angle and position of the puncture needle 3, the positioner 2 does not contact other objects, so that the puncture needle 3 is not bound, and the medical staff can adjust the puncture needle 3 more freely to ensure the accuracy of puncture. In the present invention, after the adjustment of the puncture needle 3 is completed, the excitation coil 6 can be supplied with power through the power supply device 13 to perform fixed positioning, and the operation is convenient. The rotation torque of the two half shafts 8 is the same. After the contact of the two friction blocks 11, the first sleeve 9 continues to protrude, and the torque is evenly distributed to the two half shafts 8, which promotes the two first sleeves 9. The same effect of the rotation amount prevents the puncture needle 3 from moving to one side during the clamping process, and achieves the technical effect of improving the positioning accuracy of the puncture needle 3 . The rotation directions of the two half shafts 8 are opposite. After the two friction blocks 11 are in contact with the vertical plate 4, the torques generated by the two half shafts 8 to the puncture needle 3 cancel each other out, thereby preventing the half shafts 8 from driving the puncture needle 3 to rotate. , which improves the positioning accuracy of the puncture needle 3 .

The present invention can also be provided with two positioners 2. When there is an included angle between the puncture needle 3 and the vertical plate 4, the distances between the four first sleeves 9 and the vertical plate 4 are all different. A sleeve 9 can be adaptively extended to different distances to ensure that the puncture needle 3 is fixed between the two vertical plates 4 under different conditions.

Specifically, the first sleeve 9 includes a threaded sleeve 14 and a smooth sleeve 15, the smooth sleeve 15 is connected to the friction block 11, and the threaded sleeve 14 is provided with the second sleeve 10. The external thread 16 of the threaded connection, the end of the threaded sleeve 14 is provided with a rotating shaft 17, the rotating shaft 17 is inserted into the smooth sleeve 15, and the rotating shaft 17 is rotatably connected with the smooth sleeve 15, so When the rotating shaft 17 rotates relative to the smooth sleeve 15, it needs to overcome the torque generated by the preset contact force or the field force. When the half shaft 8 is provided with a strip-shaped locking protrusion, the threaded sleeve 14 is provided with a strip-shaped sliding groove, and the strip-shaped locking protrusion slides in the strip-shaped sliding groove 21 . When the half shaft 8 rotates, the threaded sleeve 14 is driven to rotate, thereby pushing the first sleeve 9 to extend, and the smooth sleeve 15 presses the friction block 11 on the vertical plate 4 . The end of the threaded sleeve 14 is provided with a rotating shaft 17, the rotating shaft 17 is inserted into the smooth sleeve 15, the rotating shaft 17 is rotatably connected with the smooth sleeve 15, and the friction block 11 is pressed on the vertical plate 4 After that, continuing to drive the first sleeve 9 to extend does not require the friction block 11 to rotate, thereby avoiding the problem of deviation of the puncture needle 3 caused by the offset of the friction block 11 when the puncture needle 3 is positioned, and improving the positioning accuracy of the puncture needle 3 Spend. Since the rotating shaft 17 needs to overcome the torque generated by the preset contact force or field force when rotating relative to the smooth sleeve 15, such as friction force, magnetic field force or spring force, etc., after the friction block 11 stops rotating, the rotation of the rotating shaft 17 needs The torque required for the rotation of the half shaft 8 on the side in contact with the vertical plate 4 increases, and the torque required for the rotation of the half shaft 8 on the side not in contact with the vertical plate 4 remains unchanged. The half shaft 8 on the contact side stops rotating, and the half shaft 8 on the side not in contact with the vertical plate 4 rotates and extends rapidly. When the friction blocks 11 on both sides are in contact with the vertical plate 4 , the two half shafts 8 rotate to make the first sleeve 9 protrude to fix the positioner 2 firmly.

Optionally, the smooth sleeve 15 is provided with a second permanent magnet 18, and the rotating shaft 17 is provided with an induction coil 19. When the rotating shaft 17 rotates, the magnetic flux of the induction coil 19 changes, and the induction coil 19 changes. terminals are shorted. When the rotating shaft 17 rotates, it drives the induction coil 19 to rotate, and the magnetic flux of the induction coil 19 changes when it rotates. Because the terminals of the induction coil 19 are short-circuited, an induction current is generated on the induction coil 19 and an induction magnetic field is excited, and the induction magnetic field makes the induction The rotation of the coil 19 is resisted. The greater the rotational speed of the rotating shaft 17 relative to the smooth sleeve 15, the greater the resistance it receives. When the friction blocks 11 on both sides are in contact with the vertical plate 4, the two half shafts 8 are urged to rotate at the same speed, and the positioner 2. When fixing, keep the puncture needle 3 still, so as to improve the positioning accuracy of the puncture needle 3.

Preferably, the induction coil 19 is wound on the iron core 20 . Increasing the induced magnetic field generated by the induction coil 19 can cause a larger torque change when the rotational speed of the rotating shaft 17 changes, which further promotes the rotation of the two half shafts 8 at the same speed, and keeps the puncture needle 3 stationary when the positioner 2 is fixed. The positioning accuracy of the puncture needle 3 .

Specifically, the smooth sleeve 15 is provided with a sliding groove 21 , the friction block 11 is provided with a sliding rod 22 sliding along the sliding groove 21 , the friction block 11 is provided with an anti-skid structure 23 , and the friction block 11 is made of metal material, and the vertical plate 4 is a magnetic metal plate. When the friction block 11 is close to the vertical plate 4, the friction block 11 is attracted to the vertical plate 4 under the action of the magnetic field, and is pressed against the vertical plate 4 under the action of the magnetic force. The anti-skid structure 23 can improve the friction between the friction block 11 and the vertical plate 4. The friction between the vertical plates 4 prevents the friction block 11 from rotating. Since the friction block 11 can slide relative to the smooth sleeve 15, when there is a large positive pressure between the vertical plate 4 and the friction block 11, the force of the vertical plate 4 on the puncture needle 3 in the direction parallel to the semi-axis 8 is zero, In order to increase the friction force of the friction block 11 , the displacement of the puncture needle 3 to the vertical plate 4 is avoided, and the positioning accuracy of the puncture needle 3 is improved. Since the friction block 11 can slide relative to the smooth sleeve 15, when only the friction block 11 of one side half shaft 8 is in contact with the vertical plate 4, if the equipment fails and the half shaft 8 rotates, the half shaft 8 also needs to rotate 8 times. The puncture needle 3 will be displaced only after a certain amount of rotation, and the rotating shaft 17 needs to overcome the torque generated by the preset contact force or field force when rotating relative to the smooth sleeve 15 , which improves the positioning accuracy of the puncture needle 3 . The anti-skid structure 23 can use rubber pads or anti-skid protrusions.

Specifically, the friction block 11 can be a metal block. Preferably, the friction block 11 includes a first spherical shell 24, a second spherical shell 25 and a ball head 26, the first spherical shell 24 is connected with the sliding rod 22, and the inner wall of the first spherical shell 24 is provided with A horizontal arc-shaped groove 27, the outer wall of the second spherical shell 25 is provided with a horizontal arc-shaped block 28, the horizontal arc-shaped block 28 is slidably connected with the horizontal arc-shaped groove 27, and the inner wall of the second spherical shell 25 is provided with In the vertical arc groove 29, one end of the ball head 26 is a spherical surface 32, and the other end is a contact plane 31. The spherical surface 32 is provided with a vertical arc block 30, and the vertical arc block 30 is connected to the The vertical arc groove 29 is slidably connected, the inner and outer surfaces of the first spherical shell 24, the inner and outer surfaces of the second spherical shell 25 and the spherical center 33 of the spherical surface 32 of the ball head 26 coincide, and the contact plane 31 is located at the between the spherical center 33 and the second spherical shell 25 . The first spherical shell 24 is fixedly connected with the sliding rod 22, and the cross sections of the horizontal arc groove 27, the vertical arc groove 29, the horizontal arc block 28 and the vertical arc block 30 are all T-shaped, which can prevent the The second spherical shell 25 is detached from the first spherical shell 24 to prevent the ball head 26 from being detached from the second spherical shell 25 . The inner and outer surfaces of the first spherical shell 24, the inner and outer surfaces of the second spherical shell 25, and the spherical center 33 of the spherical surface 32 of the ball head 26 coincide. The horizontal arc groove 27 and the vertical arc groove 29 are located in two mutually perpendicular planes, the ball head 26 rotates in the vertical plane of the second spherical shell 25 , and the second spherical shell 25 is in the horizontal plane of the first spherical shell 24 Therefore, the ball head 26 can be rotated to multiple angles relative to the first spherical shell 24 , that is, the contact surface of the ball head 26 can be rotated to multiple angles relative to the first sleeve 9 . When the puncture needle 3 and the vertical plate 4 are inclined, the first sleeve 9 is also inclined relative to the vertical plate 4, and the contact surface of the ball head 26 can automatically adjust the angle to make it parallel to the vertical plate 4 during contact, thereby increasing the contact area , the positioning stability of the puncture needle 3 . After the ball head 26 is in contact with the vertical plate 4, it no longer rotates, and the sliding rod 22 and the smooth sleeve 15 cannot continue to rotate at this time. Optionally, the spherical shape coincides with the axis of the first sleeve 9 . Since the contact plane 31 is located between the center of the sphere 33 and the second spherical shell 25 , during the process of the spherical head 26 gradually approaching the vertical plate 4 until it is clamped, the position of the half shaft 8 can be kept still, and the center of the sphere 33 and the second spherical shell 25 can be kept in place. A sleeve 9 always moves along a straight line, which improves the positioning accuracy of the puncture needle 3 . After the puncture needle 3 is fixed, the support surface of the ball head 26 is located between the rotation center and the puncture needle 3 to form a stable support structure, preventing the ball head 26 from rotating during the fixation of the puncture needle 3 .

Optionally, a sliding block 34 is provided on the base 5 , the sliding block 34 is snap-connected with the puncture needle 3 , and the sliding block 34 is slidably connected with the base 5 . The puncture needle 3 is clamped on the slider 34, and the slider 34 is moved to push the puncture needle 3 into the needle.

Preferably, the power supply device 13 includes a power supply 35 and a control module 36 with a switch, the power supply 35 is electrically connected to the excitation coil 6 through the control module 36 with a switch, and the control module 36 with a switch is electrically connected to the excitation coil 6 . installed on the base 5 . The excitation coil 6 is controlled to work by a control module 36 with a switch, and the operation is convenient.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (8)

1. A multi-chamber puncture device based on ultrasonic guidance, characterized in that it comprises a bed body, a locator and a puncture needle, the right side of the bed body is provided with two vertical plates, and the puncture needle passes through the positioning The positioner is fixed between the two vertical plates. The positioner includes a base, an excitation coil, a first permanent magnet, a half shaft, a first sleeve, a second sleeve and a friction block. The bottom of the base The excitation coil and the first permanent magnet are provided. The excitation coil is connected to the power supply device through a brush. After the excitation coil is energized, a magnetic field is generated to drive the excitation coil and the first permanent magnet to rotate relative to each other. and the first permanent magnet are respectively connected with one of the half shafts, the half shafts are rotatably connected with the base, the half shafts are slidably connected with the first sleeve, and the first sleeve is connected with the first sleeve. The two sleeves are threadedly connected, the second sleeve is fixedly connected to the base, and the friction block is provided at the end of the first sleeve. 2 . The multi-chamber puncture device based on ultrasonic guidance according to claim 1 , wherein the first sleeve comprises a threaded sleeve and a smooth sleeve, and the smooth sleeve is connected to the friction block. 3 . , the threaded sleeve is provided with an external thread that is threadedly connected to the second sleeve, the end of the threaded sleeve is provided with a rotating shaft, the rotating shaft is inserted into the smooth sleeve, and the rotating shaft is connected to the The smooth sleeve is rotatably connected, and when the rotating shaft rotates relative to the smooth sleeve, it needs to overcome the torque generated by the preset contact force or the field force. 3. A multi-cavity puncture device based on ultrasonic guidance according to claim 1, wherein a second permanent magnet is arranged in the smooth sleeve, an induction coil is arranged on the rotating shaft, and when the rotating shaft rotates The magnetic flux of the induction coil changes, and the terminals of the induction coil are short-circuited. 4 . The ultrasonic-guided multi-lumen puncture device according to claim 3 , wherein the induction coil is wound on the iron core. 5 . 5 . The multi-chamber puncture device based on ultrasonic guidance according to claim 2 , wherein the smooth sleeve is provided with a chute, and the friction block is provided with a sliding rod that slides along the chute. 6 . , the friction block is provided with an anti-skid structure, the friction block is made of metal material, and the vertical plate is a magnetic metal plate. 6 . The multi-cavity puncture device based on ultrasonic guidance according to claim 5 , wherein the friction block comprises a first spherical shell, a second spherical shell and a ball head, and the first spherical shell is connected to the The sliding rod is connected, the inner wall of the first spherical shell is provided with a horizontal arc-shaped groove, the outer wall of the second spherical shell is provided with a horizontal arc-shaped block, and the horizontal arc-shaped block is slidably connected with the horizontal arc-shaped groove, so The inner wall of the second spherical shell is provided with a vertical arc groove, one end of the ball head is a spherical surface, the other end is a contact plane, the spherical surface is provided with a vertical arc block, and the vertical arc block is connected to the spherical surface. The vertical arc groove is slidably connected, the inner and outer surfaces of the first spherical shell, the inner and outer surfaces of the second spherical shell and the spherical center of the spherical surface of the ball head coincide, and the contact plane is located between the spherical center and the second spherical surface. between spherical shells. 7 . The multi-chamber puncture device based on ultrasonic guidance according to claim 1 , wherein a slider is provided on the base, the slider is clamped with the puncture needle, and the slider is connected with the puncture needle. 8 . The base is slidably connected. The multi-lumen puncture device based on ultrasonic guidance according to claim 1, wherein the power supply device comprises a power supply and a control module with a switch, and the power supply is electrically connected to the excitation coil through a control switch. connected, the control switch is mounted on the base.

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