Self-correcting device of transmission shaft and ultrasonic probe

Abstract

This invention provides a self-calibrating device for a drive shaft and an ultrasonic probe, comprising: a rotating inner core, a connecting male, a conductive structure sleeved on the outside of the connecting male, and a calibration component. The rotating inner core has a step inside; the distal end of the connecting male is located inside the rotating inner core; the calibration component is used for coaxial calibration of the connecting male and the rotating inner core, and includes an elastic part disposed on the step of the rotating inner core and abutting against the distal end of the connecting male, and an anti-disengagement component for locking the rotating inner core and the connecting male. The elastic part abuts against the connecting male, causing it to deflect relative to the rotating inner core, thereby achieving coaxial self-calibration of the rotating inner core and the connecting male. This invention achieves self-calibration of the rotating inner core and the connecting male by providing an elastic part and an anti-disengagement component between the rotating inner core and the connecting male, through the cooperation of the elastic part and the anti-disengagement component.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a self-calibrating device for a drive shaft and an ultrasonic 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 surrounding tissues. For example, it can provide ultrasound images of mediastinal lymph nodes. Currently, clinically used ultrasound products are broadly divided into two categories. One is the ultrasonic bronchoscope, where the ultrasonic probe is embedded with 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.

[0003] In radial bronchial ultrasound probes, the connecting shaft structure primarily enables the mechanical docking of two rotating shafts. During the docking of the lead wires, since the lead wires rotate together with the rotating shafts, the two connecting shafts must be connected at a relatively fixed angle to ensure the conduction of the lead wires. However, existing mechanical docking of the two rotating shafts cannot achieve self-calibration. Therefore, there is an urgent need for a self-calibrating drive shaft and a rapid signal connection device on the shaft. Summary of the Invention

[0004] The purpose of this invention is to provide a self-calibrating device for a drive shaft and an ultrasonic probe. This invention provides an elastic part and an anti-detachment component between the rotating inner core and the connecting male connector. Through the cooperation of the elastic part and the anti-detachment component, the self-calibration of the rotating inner core and the connecting male connector can be achieved, and at the same time, the limiting and locking of the rotating inner core and the connecting male connector can be achieved. Furthermore, the combined structure of the elastic part and the anti-detachment component is simple and reasonable, and can achieve the effect of being lightweight and labor-saving during operation.

[0005] To achieve the above objectives, the present invention provides a self-calibrating device for a drive shaft, comprising: a rotating inner core, a connecting male connector, a conductive structure sleeved on the outside of the connecting male connector, and a calibration component, wherein:

[0006] The interior of the rotating inner core has steps;

[0007] The distal end of the male connector is located inside the rotating inner core;

[0008] The correction component is used for coaxial correction of the male connector and the rotating inner core. The correction component includes an elastic part disposed on the step of the rotating inner core and abutting the distal end of the male connector, and an anti-disengagement component for locking the rotating inner core and the male connector. When the rotating inner core and the male connector are installed, the elastic part abuts the male connector and deflects it relative to the rotating inner core to achieve coaxial self-correction of the rotating inner core and the male connector.

[0009] Optionally, the elastic part is a wave-shaped gasket, wherein the wave-shaped gasket has a plurality of protrusions and a plurality of recesses, the plurality of protrusions and the plurality of recesses are alternately connected, the protrusions abut against the distal end of the connecting male, and the recesses are connected to the step of the rotating inner core.

[0010] Optionally, the anti-detachment component includes a movable groove on the conductive structure, a pin movably disposed in the movable groove along the axial direction, and a pin hole on the rotating inner core for mounting the pin.

[0011] Optionally, the axial length of the movable groove is greater than the diameter of the pin, so that when the elastic part deflects relative to the rotating inner core by contacting the connecting male, the pin can move within the movable groove.

[0012] Optionally, the axial length of the movable groove is the diameter of the pin plus the gap length, the gap length being between zero and the vertical length from the protruding tip of the protrusion to the step in its natural state.

[0013] Optionally, the anti-detachment component further includes a reset part, which is disposed inside the pin hole and wound around the outside of the pin. The two ends of the reset part are respectively fixed to the side wall of the pin hole and the side wall of the pin.

[0014] Optionally, the reset part is a reset spring, which pushes the pin into the moving groove automatically by the spring force of the reset spring itself.

[0015] Optionally, the number of anti-detachment components is set to N. The N anti-detachment components are symmetrically arranged on the rotating inner core about the center line of the rotating inner core or are arranged in a ring around the rotating inner core at equal intervals about the center line of the rotating inner core, where N is a positive integer.

[0016] Optionally, the conductive structure is made of copper, so that the conductive structure and the rotating inner core are electrically connected through the connection of the elastic part, wherein the conductive structure is a ring-shaped or fan-shaped structure.

[0017] To achieve the above objectives, the present invention also provides an ultrasonic probe, comprising a connecting head, a drive flexible shaft, and a transducer, as well as a self-calibrating device for the drive shaft, wherein:

[0018] The self-calibrating device of the drive shaft includes a male connector connected to the female connector, a rotating inner core connected to the proximal end of the drive flexible shaft, the distal end of the drive flexible shaft connected to the transducer, and an elastic portion disposed between the male connector and the rotating inner core. The ultrasonic probe also includes a first wire passing through the drive flexible shaft and used for electrical connection between the transducer and the male connector and the female connector.

[0019] Optionally, the male connector includes a first shielding housing, a first positive contact and a first negative contact disposed within the first shielding housing, and a first shielding sleeve covering the first positive contact and the first negative contact and fixing the first positive contact and the first negative contact within the first shielding housing, wherein the first positive contact and the first negative contact are respectively connected to the positive and negative terminals of the transducer through the first wire.

[0020] Optionally, the female connector includes a second shielding shell connected to the first shielding shell, a second positive contact and a second negative contact disposed within the second shielding shell, and a second shielding sleeve covering the second positive contact and the second negative contact and fixing the second positive contact and the second negative contact within the second shielding shell, wherein the first positive contact is in contact with the second positive contact, and the first negative contact is in contact with the second negative contact for electrical connection.

[0021] Optionally, it also includes a third shielding sleeve covering the transducer, and a second wire for connecting the third shielding sleeve to the rotating inner core, wherein the third shielding sleeve, the second wire, the rotating inner core, the elastic part, the first shielding shell and the second shielding shell are electrically connected to conduct electromagnetic radiation from the surface of the transducer.

[0022] The beneficial effects of this invention are as follows:

[0023] This invention incorporates an elastic part and an anti-detachment component between the rotating inner core and the connecting male connector. Through the cooperation of the elastic part and the anti-detachment component, the rotating inner core and the connecting male connector can achieve self-correction and limit locking. Furthermore, the combined structure of the elastic part and the anti-detachment component is simple and reasonable, and can achieve the effect of being lightweight and labor-saving during operation. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0025] Figure 2 For the present invention Figure 1 A three-dimensional structural diagram of the elastic part;

[0026] Figure 3 This is a schematic diagram of the second embodiment of the anti-detachment component in the present invention;

[0027] Figure 4 This is a partial structural diagram of the ultrasonic probe in this invention;

[0028] Figure 5 This is a schematic diagram of the male connector structure in this invention;

[0029] Figure 6 This is a schematic diagram of the connection head structure in this invention.

[0030] Figure Labels

[0031] 1. Rotating inner core; 11. Steps;

[0032] 2. Male connector; 21. Conductive structure; 22. First shielding shell; 23. First positive contact; 24. First negative contact; 25. First shielding sleeve;

[0033] 3. Correction assembly; 31. Elastic part; 311. Wave-shaped gasket; 3111. Protrusion; 3112. Recess; 32. Anti-detachment component; 321. Moving groove; 322. Pin; 323. Pin hole; 33. Gap; 34. Reset part; 4. Connecting female head; 41. Second shielding shell; 42. Second positive contact; 43. Second negative contact; 44. Second shielding sleeve;

[0034] 5. Drive the flexible shaft;

[0035] 6. Transducer; 61. Third shielding sleeve; 62. Insulating tape; 63. Conductive adhesive; 64. Insulating adhesive;

[0036] 8. Regularization mechanism; 81. Positioning slider; 82. Positioning groove; 83. Inclined stage; 831. First end; 832. Second end. Detailed Implementation

[0037] 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.

[0038] It should be noted that in this invention, the "distal end" of the device refers to the end that enters the body first, and the "proximal end" refers to the end that enters the body later.

[0039] In ultrasonic probes, the connecting shaft structure primarily enables the mechanical docking of two rotating shafts. During the docking of wires, since the wires rotate together with the rotating shafts, the two connecting shafts must be connected at a relatively fixed angle to ensure the wires can conduct electricity. However, existing mechanical docking methods for two rotating shafts cannot achieve self-calibration.

[0040] To address the problems existing in the prior art, embodiments of the present invention provide a self-calibrating device for a transmission shaft. Figure 1 This is a schematic diagram of an embodiment of the present invention; see reference. Figure 1As shown, the self-calibrating device of the drive shaft includes a rotating inner core 1 with an internal step 11, a connecting male 2 with its distal end located inside the rotating inner core 1, a conductive structure 21 sleeved on the connecting male 2, and a calibration component 3 for coaxial calibration of the connecting male 2 and the rotating inner core 1. The calibration component 3 includes an elastic part 31 located on the step 11 of the rotating inner core 1 and abutting against the distal end of the connecting male 2, and an anti-disengagement part 32 for locking the rotating inner core 1 and the connecting male 2. When the rotating inner core 1 and the connecting male 2 are installed, the elastic part 31 abuts against the connecting male 2 and deflects relative to the rotating inner core 1, thereby achieving coaxial calibration of the rotating inner core 1 and the connecting male 2. Specifically, when the rotating inner core 1 and the connecting male head 2 are misaligned and not coaxial, the connecting male head 2 can only partially contact the elastic part 31. In this case, the part of the elastic part 31 in contact with the connecting male head 2 is compressed, while the uncontacted part remains in a natural expansion and contraction state. During the process of inserting the connecting male head 2 horizontally into the rotating inner core 1, two situations may occur: First, the connecting male head 2 and the rotating inner core 1 are coaxially aligned without misalignment. In this case, the distal end of the connecting male head 2 is in uniform contact with the elastic part 31. Second, the connecting male head 2 and the rotating inner core 1 are not coaxially aligned and are misaligned. In this case, part of the connecting male head 2 contacts the elastic part 31 and compresses the contacted elastic part 31, while the other part does not contact the elastic part 31. Under the elastic force of the elastic part 31, the part of the male connector 2 that is in contact with the elastic part 31 will be pushed to deflect towards the part that is not in contact, thereby achieving the deflection of the male connector 2 relative to the rotating inner core 1 until the distal end of the male connector 2 can make uniform contact with the elastic part 31, and the force on the part of the male connector 2 in contact with the elastic part 31 is consistent. At this time, the male connector 2 and the rotating inner core 1 are self-corrected, so that the central axis of the male connector 2 and the central axis of the rotating inner core 1 are on the same horizontal line. In the adjustment process of this embodiment, the self-correction of the rotating inner core 1 and the male connector 2 can be achieved during the installation of the rotating inner core 1 and the male connector 2, without the need for manual operation of the self-correction process, thereby reducing the operation difficulty of the equipment and improving the assembly efficiency of the equipment.

[0041] The present invention provides an elastic part 31 and an anti-detachment component 32 between the rotating inner core 1 and the connecting male head 2. Through the cooperation of the elastic part 31 and the anti-detachment component 32, the rotating inner core 1 and the connecting male head 2 can be self-corrected, and at the same time, the rotating inner core 1 and the connecting male head 2 can be limited and locked. Furthermore, the combined structure of the elastic part 31 and the anti-detachment component 32 is simple and reasonable, and can achieve the effect of being lightweight and labor-saving during operation.

[0042] In use, the elastic part 31 is fixed on the step 11 inside the rotating inner core 1. Then, the male connector 2 is inserted into the rotating inner core 1 from left to right, so that the far end (which can be understood as the right end) of the male connector 2 abuts against the elastic part 31. Then, the anti-detachment part 32 is adjusted to lock the male connector 2 and the rotating inner core 1 together, preventing the male connector 2 from falling off the rotating inner core 1. During the installation of the rotating inner core 1 and the male connector 2, the self-alignment of the rotating inner core 1 and the male connector 2 is achieved under the action of the elastic part 31.

[0043] It is worth noting that the elastic part 31 can be fixed by adhesive or welding, but is not limited to adhesive or welding. When adhesive is used, the adhesive material must be conductive to achieve electrical conductivity between the elastic part 31 and the rotating inner core 1. After installation, there is a radially movable gap between the outer wall of the conductive structure 21 and the inner wall of the rotating inner core 1, so that the male connector 2 can deflect within the rotating inner core 1.

[0044] In one embodiment, the number of anti-detachment components 32 is set to N. The N anti-detachment components 32 are symmetrically arranged on the rotating inner core 1 about the center line of the axis of the rotating inner core 1 or are arranged in a ring around the rotating inner core 1 at equal distances. N is a positive integer. This arrangement can not only better prevent the connecting male head 2 from detaching from the rotating inner core 1, but also achieve a better self-correction function.

[0045] In one embodiment, the conductive structure 21 is made of copper, so that the conductive structure 21 is electrically connected to the rotating inner core 1 through the connection of the elastic part 31, wherein the conductive structure 21 is a ring-shaped or fan-shaped structure. Copper has conductive properties.

[0046] Figure 2 For the present invention Figure 1 See the three-dimensional structural diagram of the elastic part. Figure 2As shown, the elastic part 31 is a wave-shaped gasket 311, which has a plurality of protrusions 3111 and a plurality of recesses 3112. The protrusions 3111 and the recesses 3112 are alternately connected. The protrusions 3111 abut against the distal end of the male connector 2, and the recesses 3112 are connected to the step 11 of the rotating inner core 1. The protrusions 3111 have a certain elasticity. Therefore, through the elastic part 31 in this embodiment, the self-correction of the rotating inner core 1 and the male connector 2 can be achieved. After correction, when used, the elasticity of the elastic part 31 itself can absorb vibration, thereby protecting the equipment.

[0047] In one embodiment, a first implementation of the anti-detachment component 32 is provided, as detailed in the following document. Figure 1 As shown, the anti-detachment component 32 includes a movable groove 321 on the conductive structure 21, a pin 322 movably disposed in the movable groove 321 along the axial direction, and a pin hole 323 on the rotating inner core 1 for mounting the pin 322. The movable groove 321 and the pin hole 323 serve two purposes: firstly, they provide positioning; specifically, the installation positions of the male connector 2 and the rotating inner core 1 can be quickly located using the movable groove 321 and the pin hole 323; secondly, after the male connector 2 is installed in the rotating inner core 1, the pin 322 is inserted into the movable groove 321 through the pin hole 323 to lock the male connector 2 and the rotating inner core 1, preventing them from detaching.

[0048] In one embodiment, the axial length of the movable groove 321 is greater than the diameter of the pin 322, so that when the elastic part 31 deflects relative to the rotating inner core 1 after contacting the male connector 2, the pin 322 can move within the movable groove 321. In another embodiment, the radial height of the movable groove 321 is greater than the diameter of the pin 322, so that when the elastic part 31 deflects relative to the rotating inner core 1 after contacting the male connector 2, the pin 322 can move within the movable groove 321. As can be seen, the pin 322 is suspended in the moving groove 321 and does not contact the groove wall of the moving groove 321. In this way, when the elastic part 31 drives the connecting male head 2 and the rotating inner core 1 to achieve self-alignment, the pin 322 will not hinder the self-alignment process. This allows the connecting male head 2 to move axially relative to the rotating inner core 1 (which can be understood as moving left and right in the horizontal direction) and radially relative to the rotating inner core 1 (which can be understood as moving up and down in the vertical direction). This enables the self-alignment process of the connecting male head 2 and the rotating inner core 1 to be better realized.

[0049] In one embodiment, the axial length of the movable groove 321 is the diameter of the pin 322 plus the length of the gap 33 (the length of the gap 33 can be understood as the axial length of the groove cavity of the movable groove 321 minus the length other than the diameter of the pin 322). The length of the gap 33 is between zero and the vertical length from the top of the protrusion of the protrusion 3111 to the step 11 in the natural state. This arrangement, after the self-alignment of the connecting male head 2 and the rotating inner core 1, allows the connecting male head 2 to contact the elastic part 31, compressing the elastic part 31. Furthermore, the contact of the elastic part 31 allows the pin 322 to abut against the right side wall of the movable groove 321. This ensures that at least one side of the pin 322 contacts the wall of the movable groove 321. Through the abutment of the pin 322 against the side wall of the movable groove 321, the position of the connecting male head 2 and the rotating inner core 1 after self-alignment is more stable.

[0050] In one embodiment, the anti-detachment component 32 further includes a reset part 34, which is disposed within the pin hole 323 and wound around the outside of the pin 322. The two ends of the reset part 34 are respectively fixed to the sidewall of the pin hole 323 and the sidewall of the pin 322. Figure 1As shown. The reset part 34 is used to drive the pin 322 to automatically enter the moving groove 321 without manual control, making the installation process of the device more intelligent and convenient. In use, when the male connector 2 is inserted into the rotating inner core 1 to the right, it will move outward of the rotating inner core 1 by resisting the pin 322 through the conductive structure 21. When the moving groove 321 is aligned with the pin hole 323, the pin 322 will move into the rotating inner core 1 under the reset force of the reset part 34 and enter the moving groove 321, thereby locking the rotating inner core 1 and the male connector 2 and preventing the rotating inner core 1 from disengaging from the male connector 2.

[0051] In one example, the reset part 34 is preferably a reset spring, so that the pin 322 is automatically pushed into the moving groove 321 by the spring force of the reset spring itself. Of course, it is not limited to the reset spring.

[0052] In one embodiment, a second implementation of the anti-detachment component 32 is also provided. Figure 3 This is a schematic diagram of the second embodiment of the anti-detachment component in the present invention. (See attached diagram.) Figure 3 As shown, the anti-detachment component 32 includes a positioning slider 81 disposed on the outer wall of the male connector 2 or the inner wall of the rotating inner core 1, and a positioning groove 82 formed on the outer wall of the male connector 2 or the inner wall of the rotating inner core 1. The positioning slider 81 is slidably disposed within the positioning groove 82. In this embodiment, the combination of the positioning slider 81 and the positioning groove 82 can achieve a precise positioning effect. Specifically, through the combination of the positioning slider 81 and the positioning groove 82, the installation positions of the rotating inner core 1 and the male connector 2 can be accurately located. It can be seen that the second embodiment of the anti-detachment component 32 achieves a more precise positioning effect than the first embodiment, making the installation process of the rotating inner core 1 and the male connector 2 more convenient, time-saving, and labor-saving.

[0053] In one example, the positioning slider 81 is provided with an inclined platform 83 on the side away from the outer wall of the connecting male connector 2 or the inner wall of the rotating inner core 1. The inclined platform 83 has a first end 831 and a second end 832. The distance from the first end 831 to the center line of the connecting male connector 2 is greater than the distance from the second end 832 to the center line of the center line. Specifically, in Figure 3In the example, the tilting platform 83 is higher on the left and lower on the right. This arrangement allows the positioning slider 81 to move more easily to the right within the positioning groove 82. Furthermore, as the positioning slider 81 moves to the right, the distance from the tilting platform 83 to the center line increases. When the male connector 2 and the rotating inner core 1 are installed at an angle, guided by the tilting surface of the tilting platform 83, the proximal end of the male connector 2 rotates counterclockwise towards the center line of the male connector 2 by abutting against the bottom wall of the positioning groove 82, thus achieving self-correction. In this embodiment, the tilting platform 83 serves as the first step of self-correction. The elastic part 31 assists the tilting platform 83 in achieving self-correction, allowing the male connector 2 and the rotating inner core 1 to achieve better self-correction. The elastic part 31 also absorbs vibration, protecting the equipment. It is evident that the second embodiment of the anti-detachment component 32 achieves a better self-calibration effect compared to the first embodiment. Furthermore, in the second embodiment, the self-calibration process is completed during the installation of the rotating inner core 1 and the connecting male connector 2. Of course, in some embodiments, the tilting platform 83 replaces the elastic part 31 for the self-calibration function.

[0054] In another example, the first end 831 of the tilting platform 83 protrudes a first protrusion away from the central axis of the connecting male connector 2, or is recessed in a first groove near the central axis of the connecting male connector 2. The bottom wall of the positioning slide 82 is recessed in a second groove away from the central axis of the connecting male connector 2 on the side near the first end 831 of the tilting platform 83, or protrudes a second protrusion near the central axis of the connecting male connector 2. The first protrusion engages with the second groove, and the first groove engages with the second protrusion. Through the engagement of the first protrusion with the second groove or the first groove with the second protrusion, the limiting and locking of the connecting male connector 2 and the rotating inner core 1 can be achieved.

[0055] The self-calibrating device for the drive shaft described in this invention is used in the field of ultrasonic probes, but is not limited to the field of ultrasonic probes.

[0056] In electronic devices, electromagnetic interference energy is generally transmitted through two modes: conductive coupling and radiative coupling. To meet electromagnetic compatibility requirements, conductive coupling requires filtering techniques, i.e., EMI filtering devices, to suppress it; while radiative coupling requires shielding techniques. Given the increasingly dense electromagnetic spectrum, the rapidly increasing electromagnetic power density per unit volume, and the widespread use of mixed high- and low-level devices, leading to a deteriorating electromagnetic environment for equipment and systems, electromagnetic interference is of paramount importance.

[0057] Shielding is a method of confining electromagnetic waves to a specific area using shielding bodies such as shells, boxes, and plates made of metal. Since radiation sources are categorized into near-field electric field sources, magnetic field sources, and far-field plane waves, the shielding performance of a shielding body varies depending on the radiation source, affecting material selection, structural shape, and control of leakage through openings and gaps. To achieve the required shielding performance in the design, it is necessary to first identify the radiation source and determine the frequency range. Then, based on the typical leakage structures of each frequency band, determine the control factors, and subsequently select appropriate shielding materials and design the shielding enclosure.

[0058] Current technology uses two separate terminals, one positive and one negative. The male positive terminal connects to the female positive terminal, and the male negative terminal connects to the female negative terminal, making it susceptible to interference from external signals. Specifically, the image at the transducer end is easily affected by external interference, causing difficulties for the operator's diagnosis and increasing the risk of misdiagnosis. Current technology connects external interference to the host computer for software processing; however, because software processing cannot provide safe and effective judgments based on clinical conditions, misdiagnosis still exists.

[0059] To address the problems existing in the prior art, embodiments of the present invention also provide an ultrasonic probe. Figure 4 This is a partial structural diagram of the ultrasonic probe in this invention. (See attached diagram.) Figure 4 As shown, the ultrasonic probe includes a female connector 4, a flexible drive shaft 5, and a transducer 6, as well as a self-calibrating device for the drive shaft. The self-calibrating device includes a male connector 2 connected to the female connector 4, a rotating inner core 1 connected to the proximal end of the flexible drive shaft 5, a distal end of the flexible drive shaft 5 connected to the transducer 6, and an elastic portion 31 located between the male connector 2 and the rotating inner core 1, within a step 11. The ultrasonic probe also includes a first wire passing through the flexible drive shaft 5 for electrical connection between the transducer 6 and the male connector 2 and the female connector 4. Preferably, the rotating inner core 1 is made of stainless steel, but is not limited to stainless steel.

[0060] Figure 5 This is a schematic diagram of the structure of the male connector 2 in this invention. (See attached diagram.) Figure 5As shown, the male connector 2 includes a first shielding shell 22, a first positive contact 23 and a first negative contact 24 disposed within the first shielding shell 22, and a first shielding sleeve 25 covering and fixing the first positive contact 23 and the first negative contact 24 within the first shielding shell 22. The first positive contact 23 and the first negative contact 24 are respectively connected to the positive and negative terminals of the transducer 6 via the first wire. Preferably, the first shielding shell 22 is made of stainless steel, but is not limited to stainless steel. The first shielding sleeve 25 is made of rubber, but is not limited to rubber. In this embodiment, the first shielding shell 22 covers the first positive contact 23 and the first negative contact 24, thereby forming a metal shielding layer on one side of the first positive contact 23 and the first negative contact 24 to shield external interference signals.

[0061] Figure 6 This is a schematic diagram of the structure of the female connector 4 in this invention. (See attached diagram) Figure 6 As shown, the female connector 4 includes a second shielding shell 41 connected to the first shielding shell 22, a second positive contact 42 and a second negative contact 43 disposed within the second shielding shell 41, and a second shielding sleeve 44 covering the second positive contact 42 and the second negative contact 43 and fixing the second positive contact 42 and the second negative contact 43 within the second shielding shell 41. The first positive contact 23 contacts the second positive contact 42, and the first negative contact 24 contacts the second negative contact 43 in an electrical connection. Preferably, the second shielding shell 41 is made of stainless steel, but is not limited to stainless steel. The second shielding sleeve 44 is made of rubber, but is not limited to rubber. In this embodiment, the second shielding shell 41 covers the second positive contact 42 and the second negative contact 43, thereby forming a metal shielding layer on one side of the second positive contact 42 and the second negative contact 43 to shield external interference signals.

[0062] In one embodiment, the ultrasonic probe further includes a third shielding sleeve 61 covering the transducer 6, and a second wire for connecting the third shielding sleeve 61 to the rotating inner core 1. The third shielding sleeve 61, the second wire, the rotating inner core 1, the elastic part 31, the first shielding shell 22, and the second shielding shell 41 are electrically connected to conduct electromagnetic radiation from the surface of the transducer 6. The third shielding sleeve 61 is made of stainless steel, but is not limited to stainless steel.

[0063] During use, the transducer 6 generates electromagnetic fields on its surface, creating noise interference that affects test results. This invention improves upon existing ultrasonic probe structures, enabling the transducer 6 to conduct electromagnetic fields, thus preventing noise interference from affecting the probe's monitoring results. Specifically, the first series circuit in this invention is connected as follows: first positive contact 23, second positive contact 42, first wire, negative terminal of transducer 6, positive terminal of transducer 6, first wire, first negative contact 24 and second negative contact 43, and the positive and negative terminals of the power supply. This series circuit controls the operation of the transducer 6 for monitoring the target area. In this invention, the second circuit connection is as follows: the third shielding sleeve 61, the second wire, the rotating inner core 1, the elastic part 31, the first shielding shell 22, and the second shielding shell 41 are electrically connected, and the second shielding shell 41 is electrically connected to the ground wire (not limited to the ground wire) to export the electromagnetic signal generated on the surface of the transducer 6, thereby eliminating noise interference caused by the electromagnetic signal and making the monitoring results more accurate. Specifically, in the prior art, the positive electrode contact is inserted into the negative electrode contact, and no shielding layer is set on the outside of the two, so it is easily affected by external signals. However, this invention sets up a combined structure of the rotating inner core 1, the first shielding shell 22, and the second shielding shell 41. The setting of this combined structure can form a shielding structure outside the first positive electrode contact 23, the second positive electrode contact 42, the first negative electrode contact 24, and the second negative electrode contact 43, thereby forming a shielding layer outside the positive and negative electrode contacts, which can effectively prevent interference from external signals.

[0064] In one embodiment, the ultrasonic probe further includes an insulating tape 62 disposed between the transducer 6 and the third shielding sleeve 61, a conductive adhesive 63 covering the transducer 6, and an insulating adhesive 64 covering the conductive adhesive 63 and the transducer 6. The insulating adhesive 64 is connected to the insulating tape 62, forming a closed cavity between them. The transducer 6 is disposed within the closed cavity to form a fully enclosed insulating structure around the transducer 6. Figure 4 As shown. The present invention, through the combined structure of the insulating tape 62 and the insulating adhesive 64, enables the transducer 6 to have better insulation performance.

[0065] It is worth noting that adhesive sealing is required at each connection point in this invention, which will not be elaborated here.

[0066] 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. A self-aligning device for a transmission shaft, characterized in that, include: The rotating inner core, the male connector, the conductive structure sleeved on the outside of the male connector, and the correction assembly, wherein: The interior of the rotating inner core has steps; The distal end of the male connector is located inside the rotating inner core; The correction component is used for coaxial correction of the male connector and the rotating inner core. The correction component includes an elastic part disposed on the step of the rotating inner core and abutting the distal end of the male connector, and an anti-disengagement component for locking the rotating inner core and the male connector. When the rotating inner core and the male connector are installed, the elastic part abuts the male connector and deflects it relative to the rotating inner core to achieve coaxial self-correction of the rotating inner core and the male connector.

2. The self-aligning device for the transmission shaft according to claim 1, characterized in that, The elastic part is a wave-shaped gasket, wherein the wave-shaped gasket has a plurality of protrusions and a plurality of recesses, the plurality of protrusions and the plurality of recesses are alternately connected, the protrusions abut against the distal end of the connecting male, and the recesses are connected to the step of the rotating inner core.

3. The self-calibrating device for the transmission shaft according to claim 2, characterized in that, The anti-detachment component includes a movable groove on the conductive structure, a pin movably disposed in the movable groove along the axial direction, and a pin hole on the rotating inner core for mounting the pin.

4. The self-calibrating device for the transmission shaft according to claim 3, characterized in that, The axial length of the movable groove is greater than the diameter of the pin, so that when the elastic part deflects relative to the rotating inner core by contacting the connecting male, the pin can move within the movable groove.

5. The self-calibrating device for the transmission shaft according to claim 3, characterized in that, The axial length of the movable groove is the diameter of the pin plus the gap length, and the gap length is between zero and the vertical length from the top of the protrusion to the step in the natural state.

6. The self-calibrating device for the transmission shaft according to claim 3, characterized in that, The anti-detachment component also includes a reset part, which is disposed inside the pin hole and wrapped around the outside of the pin. The two ends of the reset part are respectively fixed to the side wall of the pin hole and the side wall of the pin.

7. The self-aligning device for the transmission shaft according to claim 6, characterized in that, The reset part is a reset spring, which pushes the pin into the moving groove automatically by the spring force of the reset spring itself.

8. The self-aligning device for the transmission shaft according to claim 1, characterized in that, The number of anti-detachment components is set to N. The N anti-detachment components are symmetrically arranged on the rotating inner core about the center line of the rotating inner core or are arranged in a ring at equal distances around the center line of the rotating inner core, where N is a positive integer.

9. The self-calibrating device for the transmission shaft according to claim 1, characterized in that, The conductive structure is made of copper, and the conductive structure is electrically connected to the rotating inner core through the connection of the elastic part. The conductive structure is a ring-shaped or fan-shaped structure.

10. An ultrasonic probe, characterized in that, It includes a connecting female head, a drive flexible shaft and a transducer, and a self-calibrating device for the drive shaft as described in any one of claims 1 to 9, wherein; The self-calibrating device of the drive shaft includes a male connector connected to the female connector, a rotating inner core connected to the proximal end of the drive flexible shaft, the distal end of the drive flexible shaft connected to the transducer, and an elastic portion disposed between the male connector and the rotating inner core. The ultrasonic probe also includes a first wire passing through the drive flexible shaft and used for electrical connection between the transducer and the male connector and the female connector.

11. The ultrasonic probe according to claim 10, characterized in that, The male connector includes a first shielding shell, a first positive contact and a first negative contact disposed within the first shielding shell, and a first shielding sleeve covering the first positive contact and the first negative contact and fixing the first positive contact and the first negative contact within the first shielding shell. The first positive contact and the first negative contact are respectively connected to the positive and negative terminals of the transducer through the first wire.

12. The ultrasonic probe according to claim 11, characterized in that, The female connector includes a second shielding shell connected to the first shielding shell, a second positive contact and a second negative contact disposed within the second shielding shell, and a second shielding sleeve covering the second positive contact and the second negative contact and fixing the second positive contact and the second negative contact within the second shielding shell. The first positive contact is in contact with the second positive contact, and the first negative contact is in contact with the second negative contact for electrical connection.

13. The ultrasonic probe according to claim 12, characterized in that, It also includes a third shielding sleeve covering the transducer, and a second wire for connecting the third shielding sleeve to the rotating inner core, wherein the third shielding sleeve, the second wire, the rotating inner core, the elastic part, the first shielding shell and the second shielding shell are electrically connected to conduct electromagnetic radiation from the surface of the transducer.

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