An ultrasonic probe

Abstract

The application provides an ultrasonic probe, which comprises a rotating inner core, an inductor and a sealing part, and a transducer coaxially connected with the rotating inner core, wherein the rotating inner core has adjacent first and second surfaces, the first surface is provided with a first through hole for communication between the rotating inner core and the transducer, and the second surface is provided with N second through holes, N being a positive integer; the sealing part is sleeved outside the rotating inner core and covers the openings of the N second through holes; when the inductor is loaded into the rotating inner core through the second through hole, the sealing part is shrunk by heat to abut against the center of gravity of the inductor and is fixed on the central axis of the rotating inner core; the application improves the structure of the rotating inner core and the sealing part to fix the center of gravity of the inductor on the central axis of the rotating inner core, so as to prevent the effect of centrifugal force weightlessness, thereby avoiding image shaking, and further avoiding misdiagnosis caused by clinical image distortion.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ultrasound probe. Background Technology

[0002] Bronchial ultrasound is a relatively new technology developed in recent years. It utilizes an ultrasonic bronchoscope or a miniature ultrasonic probe inserted through a bronchoscope into the trachea and bronchi. Scanning then clearly displays the layers of the tracheal and bronchial walls, including adjacent tissues surrounding the lumen. For example, it can provide ultrasound images of mediastinal lymph nodes. Currently, clinically used ultrasound products are generally divided into two categories. One is the ultrasonic bronchoscope, where the ultrasonic probe is embedded in an optical fiber structure, enabling scanning along the long axis of the airway and allowing for real-time guided needle aspiration biopsy. The other is the radial bronchial ultrasound probe, which needs to be inserted into the airway through the biopsy channel of the bronchoscope and can produce 360-degree images perpendicular to the airway axis. Currently, ultrasonic probes contain a rotary joint, an inductor, and a transducer. The transducer connects to the rotary joint, and the inductor is installed inside the rotary joint. However, the existing installation method requires cutting off half of the rotating inner core to create a groove. Two threaded holes are made at the bottom of the groove. The inductor is then fixed to the bottom of the groove using screws and the threaded holes. Finally, a brass sheet is placed on top to seal the cut-off groove. Figure 1 As shown, because a single groove is cut on only one side, and the brass sheet is only placed on one side of the rotating inner core, and the brass sheet and the rotating inner core are made of different materials, the weight of the part containing the brass sheet and the part without the brass sheet differs in the circumferential direction. This causes the center of gravity of the inductor to not coincide with the central axis of the rotating inner core, resulting in an imbalance of weight of the rotating inner core and the inductor as a whole around the circumference. This weight imbalance prevents the rotating inner core from rotating around the same axis, causing the transducer to wobble under the centrifugal force of weightlessness, which in turn causes image wobble, hindering clinical image diagnosis and easily leading to misdiagnosis. Therefore, there is an urgent need for an ultrasound probe that can balance the circumferential weight to prevent image wobble. Summary of the Invention

[0003] The purpose of this invention is to provide an ultrasound probe that, by improving the structure of the rotating inner core and the sealing part, fixes the center of gravity of the inductor on the central axis of the rotating inner core, thereby preventing centrifugal weightlessness and avoiding image shaking, thus avoiding misdiagnosis caused by clinical image distortion.

[0004] To achieve the above objectives, the present invention provides an ultrasonic probe, comprising a rotating inner core, an inductor, and a sealing portion, wherein,

[0005] The rotating inner core has an adjacent first surface and a second surface. The first surface has a first through hole that communicates with the inner cavity of the rotating inner core. The second surface has N second through holes, where N is a positive integer.

[0006] The sealing part is sleeved outside the rotating inner core and covers the openings of the N second through holes;

[0007] When the inductor is inserted into the rotating inner core through the second through hole, the sealing part shrinks due to heat to abut against the center of gravity of the inductor and fix it on the central axis of the rotating inner core.

[0008] Optionally, the sealing part is a sealing tube, wherein the sealing tube is made of heat-shrinkable material.

[0009] Optionally, it also includes a transducer, an outer tube, and a drive flexible shaft, wherein the rotating inner core, the inductor, the sealing part, the transducer, and the drive flexible shaft are all disposed inside the outer tube; the drive flexible shaft is used for connecting the transducer and the rotating inner core.

[0010] Optionally, it also includes a first wire and a second wire respectively disposed on the positive and negative terminals of the inductor, wherein the end of the first wire away from the inductor is electrically connected to the negative terminal of the male connector, and the end of the second wire away from the inductor is electrically connected to the positive terminal of the transducer.

[0011] Optionally, the N second through holes are divided into several groups, and the several groups of second through holes are arranged in a ring around the central axis of the rotating inner core, wherein the distance between two adjacent second through holes in each group is the same.

[0012] Optionally, the rotating inner core is further provided with a step for supporting the inductor, and a fixing block is provided at the end of the inductor away from the step, wherein the weight of the step and the fixing block are the same.

[0013] Optionally, the inductor is fixedly connected to the step, wherein the inductor and the step are fixed by adhesive bonding.

[0014] Optionally, it also includes a recessed portion within the rotating inner core and a protrusion on the inductor, wherein when the inductor is inserted into the rotating inner core through the second through hole, the protrusion enters the recessed portion.

[0015] Optionally, the recess is a third through hole formed on the rotating inner core;

[0016] The protrusion includes a fourth through hole on the inductor, a movable post movably disposed within the fourth through hole, and an elastic member disposed within the fourth through hole for connecting the fourth through hole and the movable post.

[0017] Optionally, it also includes two contact plates respectively disposed on opposite ends of the inductor, and contact rods connected to the contact plates. The contact rods are movably inserted into contact holes opened on the inductor, and a return spring is wound around the contact rods. The two ends of the return springs are respectively fixedly connected to the side wall of the contact rod and the side wall of the contact hole. The contact hole communicates with the fourth through hole, and the contact rods are matched with the movable column.

[0018] The beneficial effects of this invention are as follows:

[0019] This invention balances the weight imbalance caused by the openings in the rotating inner core by setting N second through holes on the rotating inner core; at the same time, the sealing part is sleeved on the outside of the rotating inner core from the axial direction, so that the weight of the sealing part on the circumference of the rotating inner core is uniform; and because the sealing part abuts, the center of gravity of the inductor is fixed on the central axis of the rotating inner core, which can further prevent the problem of centrifugal weight loss. In this way, the rotating inner core can carry the transducer to move on the same rotating axis, avoiding the shaking of the generated image, thereby avoiding misdiagnosis caused by clinical image distortion. Attached Figure Description

[0020] Figure 1 A schematic diagram of the combined structure of inductor, rotating core and brass sheet in the prior art;

[0021] Figure 2 This is a schematic diagram of the first embodiment of the assembly of the inductor, sealing part and rotating inner core in the present invention;

[0022] Figure 3 This is a top view of the rotating inner core in the first embodiment of the assembly structure of the inductor, sealing part and rotating inner core of the present invention;

[0023] Figure 4 This is a schematic diagram of the inductor structure in the first embodiment of the inductor, sealing part and rotating inner core assembly structure of the present invention;

[0024] Figure 5 This is a partial structural diagram of the ultrasonic probe in this invention;

[0025] Figure 6 This is a schematic diagram of the second embodiment of the assembly of the inductor, sealing part and rotating inner core in the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the recessed portion and the protruding portion in this invention;

[0027] Figure 8 This is a schematic diagram of the combined structure of the contact plate, contact rod, and return spring in this invention;

[0028] Figure 9 This is an exploded structural diagram of the third embodiment of the assembly structure of the inductor, sealing part and rotating inner core in this invention.

[0029] Figure Labels

[0030] 1. Rotating inner core; 11. First surface; 12. Second surface; 13. First through hole; 14. Inner cavity; 15. Second through hole; 16. Step; 17. Fixing block; 18. Recessed part; 19. Protruding part; 191. Fourth through hole; 192. Moving column; 193. Elastic element;

[0031] 2. Inductor; 21. Contact plate; 22. Contact rod; 23. Contact hole; 24. Return spring; 25. L-shaped sealing plate;

[0032] 3. Sealing part;

[0033] 4. Transducer;

[0034] 5. Outer tube;

[0035] 6. Drive the flexible shaft;

[0036] 7. First conductor;

[0037] 8. Second conductor. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, but do not exclude other elements or objects.

[0039] To address the problems existing in the prior art, embodiments of the present invention provide an ultrasonic probe; Figure 2 This is a schematic diagram of the first embodiment of the assembly of the inductor, sealing part and rotating inner core in the present invention; Figure 3 This is a top view of the rotating inner core in the first embodiment of the assembly structure of the inductor, sealing part and rotating inner core of the present invention; Figure 4 This is a schematic diagram of the inductor structure in the first embodiment of the inductor, sealing part, and rotating inner core assembly structure of the present invention; see reference. Figures 2 to 4As shown, the ultrasonic probe includes a rotating inner core 1, an inductor 2, and a sealing part 3. The rotating inner core 1 has an adjacent first surface 11 (which can be connected as the left side of the rotating inner core 1) and a second surface 12 (which can be understood as the circumferential surface of the rotating inner core 1 facing the operator). The first surface 11 has a first through hole 13 communicating with the inner cavity 14 of the rotating inner core 1. The second surface 12 has N second through holes 15, where N is a positive integer. The sealing part 3 is fitted over the rotating inner core 1 and covers the openings of the N second through holes 15. When the inductor 2 is inserted into the rotating inner core 1 through the second through holes 15, the sealing part 3 contracts due to heat to abut against the center of gravity of the inductor 2 and fix it on the central axis of the rotating inner core 1. In this embodiment, the second through holes 15 are not connected to the first through holes 13.

[0040] Figure 5 This is a partial structural diagram of the ultrasonic probe in this invention; see reference. Figure 5 As shown, the ultrasonic probe also includes a transducer 4, an outer tube 5, and a drive flexible shaft 6. The rotating inner core 1, the inductor 2, the sealing part 3, the transducer 4, and the drive flexible shaft 6 are all disposed inside the outer tube 5. The drive flexible shaft 6 is used to connect the transducer 4 and the rotating inner core 1.

[0041] This invention balances the weight imbalance caused by the openings in the rotating inner core 1 by providing N second through holes 15 on the rotating inner core 1. Simultaneously, the sealing part 3 is axially sleeved on the outside of the rotating inner core 1, ensuring that the weight of the sealing part 3 on the circumference of the rotating inner core 1 is uniform. Furthermore, the contact of the sealing part 3 fixes the center of gravity of the inductor 2 on the central axis of the rotating inner core 1, further preventing centrifugal weight loss. This allows the rotating inner core 1 to carry the transducer 4 along the same rotating axis, avoiding shaking that could cause image distortion. Additionally, the inductor 2 is added to achieve electrical matching; its external structure is improved to accommodate the structure of the rotating inner core 1. By utilizing the inherent properties of inductor 2, an inductor 2 is designed to be connected in series with transducer 4 to form an LC resonant circuit. When resonant, the capacitive reactance and inductive reactance cancel each other out to 0. At this time, the total impedance of the capacitor is at its minimum, the complex impedance phase is 0, and it manifests as a pure resistive characteristic, which is the self-resonant frequency of the capacitor. This allows the excitation energy of the magnetostrictive sensor to be mainly concentrated near the design center frequency. By using an external circuit to perform impedance matching on the coil, the slope change of the impedance measurement line is amplified, thereby increasing the energy of the ultrasonic waves excited near that slope.

[0042] In one embodiment, the ultrasonic probe further includes a first wire 7 and a second wire 9 respectively disposed on the positive and negative terminals of the inductor 2, wherein the end of the first wire 7 away from the inductor 2 is electrically connected to the negative terminal of the male connector, and the end of the second wire 9 away from the inductor 2 is electrically connected to the positive terminal of the transducer 4. Figure 4 As shown.

[0043] In one embodiment, the sealing part 3 is a sealing tube, wherein the sealing tube is made of heat-shrinkable material. In this invention, a sealing tube is used instead of the existing brass sheet to seal the second through hole 15 on the rotating inner core 1. By having the sealing part 3 surround the rotating inner core 1 from all sides, the problem of uneven weight distribution of the rotating inner core 1 when only one side is sealed can be avoided, thereby effectively preventing the centrifugal force weight loss problem during the rotation of the rotating inner core 1. At the same time, it reduces the processing difficulty, allowing the sealing tube to be quickly and firmly fixed to the outside of the rotating inner core 1. In one example, the sealing tube is a circular tube, but it is not limited to circular tubes.

[0044] In one embodiment, there may be one, two, three, or more second through holes 15. Preferably, there are two second through holes 15, and when there are two second through holes 15, the two second through holes 15 are arranged opposite each other. When there are three second through holes 15, the three second through holes 15 are arranged in a ring at equal intervals around the central axis of the rotating inner core 1. This arrangement can avoid the problem of centrifugal weight loss caused by the uneven distribution of the second through holes 15 on the rotating inner core 1.

[0045] In a first embodiment of the assembly structure of the inductor 2, the sealing part 3, and the rotating inner core 1, two second through holes 15 are provided, and the two second through holes 15 are arranged opposite each other. In use, the inductor 2 is installed into the rotating inner core 1 through one of the second through holes 15. Then, the sealing part 3 is fitted over the rotating inner core 1 and blocks the opening of the second through hole 15. The sealing part 3 is then heat-treated, causing it to shrink. During this shrinkage, it forms a barrier against the inductor 2, and the center of gravity of the inductor 2 remains on the central axis of the rotating inner core 1. In this embodiment, by opening two opposing second through holes 15 on the rotating inner core 1 (which can be understood as opening second through holes 15 on the front and back of the rotating inner core 1), and not opening second through holes 15 on the top and bottom surfaces, the inductor 2 is installed into the rotating inner core 1 through the front second through hole 15.

[0046] In one embodiment, the rotating inner core 1 further includes a step 16 for supporting the inductor 2. A fixing block 17 is located at the end of the inductor 2 away from the step 16, wherein the step 16 and the fixing block 17 have the same weight. The combined weight of the step 16 and the fixing block 17 fills the gaps in the rotating inner core 1 located at the two second through holes 15, ensuring that the weight of the front and rear of the rotating inner core 1 is consistent with the weight of the top and bottom, thus maintaining a consistent weight in the circumferential direction. Simultaneously, the step 16 and the fixing block 17 have the same weight, and are respectively positioned on both sides of the inductor 2, thereby balancing the weight in the front and rear directions and keeping the center of gravity of the inductor 2 on the central axis of the rotating inner core 1. In this embodiment, the inductor 2 and the fixing block 17 form a T-shaped structure.

[0047] The existing inductor 2 and rotating inner core 1 are fixed by two screws, which makes installation and disassembly cumbersome and complex. Furthermore, the screws themselves are heavy, increasing the risk of weightlessness due to centrifugal force. To address these issues, in one embodiment, the inductor 2 is fixedly connected to the step 16 by adhesive bonding. In this embodiment, adhesive bonding reduces the difficulty of fixing the inductor 2 and step 16. Moreover, since the adhesive is very light and its weight is negligible compared to the rotating inner core 1, the problem of weightlessness due to centrifugal force caused by the adhesive can be eliminated. Of course, in other embodiments, the inductor 2 and step 16 can also be fixed using other methods besides adhesive bonding.

[0048] It is worth noting that in the first embodiment of the assembly structure of inductor 2, sealing part 3 and rotating inner core 1, the inductor 2 is fixed on the step 16, and the thermal shrinkage of the sealing part 3 will create resistance to the inductor 2, thereby fixing the inductor 2 more firmly on the step 16.

[0049] Meanwhile, in the first embodiment of the assembly structure of inductor 2, sealing part 3 and rotating inner core 1, the first wire 7 enters from the left end of the rotating inner core 1 and exits from the second through hole 15 at the front; the second wire 9 enters the rotating inner core 1 from the right side through the first through hole 13 and exits from the second through hole 15 at the front; then the first wire 7 and the second wire 9 are respectively connected to the positive and negative terminals of the inductor 2. After the inductor 2 is connected to the first wire 7 and the second wire 9, the inductor 2 is inserted into the rotating inner core 1 through the second through hole 15 at the front.

[0050] The present invention also provides a second embodiment of the assembly structure of the inductor 2, the sealing part 3 and the rotating inner core 1; Figure 6 This is a schematic diagram of the second embodiment of the assembly of the inductor, sealing part, and rotating inner core in this invention; see reference. Figure 6 As shown, the rotating inner core 1 has two opposing second through holes 15, located at the front and rear of the rotating inner core 1. Notably, there are no second through holes 15 on the top and bottom of the rotating inner core 1. The inductor 2 is installed into the rotating inner core 1 through the second through holes 15. In this embodiment, the inductor 2 has a rectangular structure, and its length is arranged along the two second through holes 15. This arrangement allows the mass of the inductor 2 to fill the missing portion of the rotating inner core 1 located at the two second through holes 15, thereby balancing the weight of the rotating inner core 1. In this embodiment, the second through holes 15 are not connected to the first through hole 13.

[0051] Figure 7 This is a schematic diagram of the structure of the recessed portion and the protruding portion in this invention; see reference. Figure 7 As shown, the ultrasonic probe further includes a recess 18 disposed within the rotating inner core 1 and a protrusion 19 disposed on the inductor 2. When the inductor 2 is inserted into the rotating inner core 1 through the second through hole 15, the protrusion 19 enters the recess 18. In use, the cooperation of the recess 18 and the protrusion 19 confines the inductor 2 within the rotating inner core 1. Thus, during installation, only the positions of the recess 18 and the protrusion 19 need to be aligned to adjust the position of the inductor 2 within the rotating inner core 1, thereby reducing the difficulty of installation and improving installation efficiency. Preferably, two sets of the recess 18 and the protrusion 19 are provided, symmetrically arranged within the rotating inner core 1.

[0052] In one example, the recess 18 is a third through hole formed on the rotating inner core 1; the protrusion 19 includes a fourth through hole 191 provided on the inductor 2, a movable post 192 movably provided in the fourth through hole 191, and an elastic member 193 provided in the fourth through hole 191 for connecting the fourth through hole 191 and the movable post 192, such as... Figure 7As shown. During operation, when the inductor 2 moves into the second through hole 15, the moving post 192 moves into the fourth through hole 191 due to the contact with the wall of the second through hole 15. At this time, the elastic member 193 is compressed. When the moving post 192 moves to face the fourth through hole 191, the elastic member 193 pushes the moving post 192 out of the fourth through hole 191 and into the third through hole, thereby limiting and locking the inductor 2 within the rotating inner core 1. Preferably, the cavity of the third through hole has a funnel-shaped structure, and the diameter of the end of the third through hole facing into the rotating inner core 1 is larger than the diameter of the end of the third through hole facing out of the rotating inner core 1. This arrangement allows the sidewall of the third through hole to clamp the moving post 192.

[0053] Preferably, the elastic element 193 is a drive spring or a guide assembly, but is not limited to the drive spring or the guide assembly. The guide assembly includes a guide rod, a guide cylinder, and a guide spring. The guide rod is movably inserted into the guide cylinder, and the guide spring is wound around the outside of the guide rod. The two ends of the guide spring are respectively fixedly connected to the side wall of the guide rod and the outer side wall of the guide cylinder.

[0054] In another example, the recess 18 is a groove, and the protrusion 19 is a semi-circular protrusion, wherein the semi-circular protrusion is made of rubber. During operation, when the semi-circular protrusion enters the groove, it limits and locks the inductor 2 within the rotating inner core 1.

[0055] Figure 8 This is a schematic diagram of the combined structure of the contact plate, contact rod, and return spring in this invention; see reference. Figure 8 As shown, the ultrasonic probe also includes two contact plates 21 respectively disposed at opposite ends of the inductor 2, and contact rods 22 connected to the contact plates 21. The contact rods 22 are movably inserted into contact holes 23 opened on the inductor 2, and a return spring 24 is wound around the contact rods 22. The two ends of the return spring 24 are respectively fixedly connected to the side wall of the contact rod 22 and the side wall of the contact hole 23. The contact hole 23 communicates with the fourth through hole 191, and the contact rod 22 is matched with the moving column 192. The combination structure of the contact plates 21, the contact rods 22 and the return spring 24 is used to securely lock the moving column 192 in the third through hole, thereby firmly fixing the inductor 2 in the rotating inner core 1 through the moving column 192 and the third through hole. After the rotating inner core 1 is heat-shrinked by the sealing part 3, the inductor 2 can be effectively prevented from shaking in the rotating inner core 1.

[0056] It is worth noting that the second embodiment of the assembly structure of inductor 2, sealing part 3 and rotating inner core 1 differs from the first embodiment in that, in the second embodiment of the assembly structure of inductor 2, sealing part 3 and rotating inner core 1, the inductor 2 is suspended inside the rotating inner core 1. During installation, the inductor 2 is first locked inside the rotating inner core 1 by the cooperation of the recessed part 18 and the protruding part 19. Then, as the sealing part 3 is heated and shrinks, it will form abutment against the abutment plate 21 under the action of the shrinkage resistance force, and the abutment plate 21 will move closer to the inductor 2. As the abutment plate 21 moves, the abutment rod 22 will move into the fourth through hole 191 and abut against the moving post 192 to move out of the fourth through hole 191, thereby causing the moving post 192 to move further into the third through hole, and thus making the moving post 192 more firmly attached to the side wall of the third through hole by the abutment.

[0057] Meanwhile, in the second embodiment of the assembly structure of inductor 2, sealing part 3 and rotating inner core 1, the first wire 7 enters from the left end of the rotating inner core 1 and exits from the front second through hole 15; the second wire 9 enters the rotating inner core 1 from the right side through the first through hole 13 and exits from the front second through hole 15; then the first wire 7 and the second wire 9 are respectively connected to the positive and negative terminals of the inductor 2, and the inductor 2 is then inserted into the rotating inner core 1 through the front second through hole 15.

[0058] Figure 9 This is an exploded structural diagram of the third embodiment of the assembly structure of the inductor, sealing part, and rotating inner core in this invention; see reference. Figure 9 As shown, the third embodiment of the assembly structure of inductor 2, sealing part 3, and rotating inner core 1 differs from the second and first embodiments in that, in the third embodiment, the rotating inner core 1 has only one second through hole 15, and the second through hole 15 is connected to the first through hole 13. In order to form the second through hole 15, an L-shaped structure is cut out on the rotating inner core 1, thus determining that the cavity of the second through hole 15 is L-shaped. It is worth noting that the inductor 2 is connected to an L-shaped sealing plate 25 that matches the L-shaped structure. After the inductor 2 is connected to the first wire 7 and the second wire 9 respectively, during the process of installing the inductor 2 onto the rotating inner core 1, the L-shaped sealing plate 25 will block the second through hole 15 of the L-shaped structure. In this way, during the process of installing the inductor 2 onto the rotating inner core 1, no additional external structure is required, thus preventing the problem of centrifugal weight loss.

[0059] In one embodiment, both the cavity of the second through hole 15 and the L-shaped sealing plate 25 are funnel-shaped, and the upper dimension of the cavity of the second through hole 15 is larger than the lower dimension. Thus, when the L-shaped sealing plate 25 blocks the second through hole 15, the funnel-shaped structure of the second through hole 15 can support the L-shaped sealing plate 25, thereby limiting and locking the inductor 2 inside the rotating inner core 1. Then, the sealing part 3 is sleeved on the outside of the rotating inner core 1, and the L-shaped sealing plate 25 is fixed inside the second through hole 15 by utilizing the heat shrinking property of the sealing part 3.

[0060] It is worth noting that in the third embodiment of the assembly structure of the inductor 2, the sealing part 3 and the rotating inner core 1, the inductor 2 is suspended in the rotating inner core 1. During the installation process, the inductor 2 achieves the effect of limiting and locking through the structural cooperation of the L-shaped sealing plate 25 and the second through hole 15. Furthermore, the L-shaped sealing plate 25 and the second through hole 15 have simple structures and are easy to process and manufacture, thereby effectively reducing processing costs.

[0061] Meanwhile, in the third embodiment of the assembly structure of the inductor 2, the sealing part 3, and the rotating inner core 1, the first wire 7 enters from the left end of the rotating inner core 1 and exits from the second through hole 15 at the front; the second wire 9 does not need to be inserted into the first through hole 13, thereby reducing the installation difficulty of the device; then the first wire 7 and the second wire 9 are respectively connected to the positive and negative terminals of the inductor 2. After the inductor 2 is connected to the first wire 7 and the second wire 9, the inductor 2 is inserted into the rotating inner core 1 through the second through hole 15 at the front. With the installation of the inductor 2, the L-shaped sealing plate 25 is used to seal the second through hole 15. Before sealing, the second wire 9 will enter the first through hole 13 along the second through hole 15.

[0062] While embodiments of the present invention have been described in detail above, it will be apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations fall within the scope and spirit of the invention as set forth in the claims. Furthermore, the invention described herein may have other embodiments and can be implemented or carried out in various ways.

Claims

1. An ultrasonic probe, characterized in that, Includes a rotating inner core, an inductor, and a sealing component, wherein, The rotating inner core has an adjacent first surface and a second surface. The first surface has a first through hole that communicates with the inner cavity of the rotating inner core. The second surface has N second through holes, where N is a positive integer. The sealing part is sleeved outside the rotating inner core and covers the openings of the N second through holes; When the inductor is inserted into the rotating inner core through the second through hole, the sealing part shrinks due to heat to abut against the center of gravity of the inductor and fix it on the central axis of the rotating inner core.

2. The ultrasonic probe according to claim 1, characterized in that, The sealing part is a sealing tube, wherein the sealing tube is made of heat-shrinkable material.

3. The ultrasonic probe according to claim 1, characterized in that, It also includes a transducer, an outer tube, and a drive flexible shaft, wherein the rotating inner core, the inductor, the sealing part, the transducer, and the drive flexible shaft are all disposed inside the outer tube; the drive flexible shaft is used for connecting the transducer and the rotating inner core.

4. The ultrasonic probe according to claim 3, characterized in that, It also includes a first wire and a second wire respectively disposed on the positive and negative terminals of the inductor, wherein the end of the first wire away from the inductor is electrically connected to the negative terminal of the male connector, and the end of the second wire away from the inductor is electrically connected to the positive terminal of the transducer.

5. The ultrasonic probe according to claim 1, characterized in that, The N second through holes are divided into several groups, and the several groups of second through holes are arranged in a ring around the central axis of the rotating inner core, wherein the distance between two adjacent second through holes in each group is the same.

6. The ultrasonic probe according to any one of claims 1 to 5, characterized in that, The rotating inner core is further provided with a step for supporting the inductor, and a fixing block is provided at the end of the inductor away from the step, wherein the weight of the step and the fixing block are the same.

7. The ultrasonic probe according to claim 6, characterized in that, The inductor is fixedly connected to the step, wherein the inductor and the step are fixed by adhesive bonding.

8. The ultrasonic probe according to any one of claims 1 to 4, characterized in that, It also includes a recessed portion disposed within the rotating inner core and a protruding portion disposed on the inductor, wherein when the inductor is inserted into the rotating inner core through the second through hole, the protruding portion enters the recessed portion.

9. The ultrasonic probe according to claim 8, characterized in that, The recessed portion is a third through hole formed on the rotating inner core; The protrusion includes a fourth through hole on the inductor, a movable post movably disposed within the fourth through hole, and an elastic member disposed within the fourth through hole for connecting the fourth through hole and the movable post.

10. The ultrasonic probe according to claim 9, characterized in that, It also includes two contact plates respectively disposed on opposite ends of the inductor, and contact rods connected to the contact plates. The contact rods are movably inserted into contact holes opened on the inductor, and a return spring is wound around the contact rods. The two ends of the return springs are respectively fixedly connected to the side wall of the contact rod and the side wall of the contact hole. The contact hole communicates with the fourth through hole, and the contact rods are matched with the movable column.

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