Ultrasonic probe and ultrasonic diagnosis equipment

Abstract

The utility model discloses an ultrasonic probe and ultrasonic diagnosis equipment, and the ultrasonic probe comprises a probe housing which is internally provided with an installation channel penetrating along the length direction of the probe housing; one end of the outer sheath tube is fixed in the mounting channel; the sliding shaft is fixed in the relative circumferential direction and is connected to the inner side of the probe shell in a relative axial sliding manner; a shaft inner cavity penetrating in the axial direction of the sliding shaft is formed in the sliding shaft. The connecting sleeve is fixedly connected to one end of the sliding shaft; the rotating shaft is relatively axially fixed and relatively circumferentially rotatably connected to the inner side of the connecting sleeve, and one end of the rotating shaft extends into the shaft inner cavity; a signal line channel penetrates through the rotating shaft in the length direction of the rotating shaft; one end of the spring tube is fixedly connected with the rotating shaft, and the other end extends into the outer sheath tube; and the ultrasonic transducer is arranged at the other end of the bourdon tube. On the basis that 3D ultrasonic scanning imaging can be achieved, the ultrasonic probe further has the advantages of being few in component parts, simple in structure, easy to assemble and the like.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an ultrasound probe and an ultrasound diagnostic device. Background Technology

[0002] An ultrasound probe is a device that uses a piezoelectric crystal to emit and receive ultrasound waves. It mainly utilizes the piezoelectric effect of materials to convert electrical energy into acoustic energy. During endoscopic ultrasound examination, the flexible tube at the front end of the ultrasound probe is directly inserted into the patient's upper gastrointestinal tract. Ultrasound probes are characterized by their small size, ease of operation, and clear imaging.

[0003] Existing endoscopic ultrasound diagnostic equipment mainly consists of a probe housing, a Bourdon tube, an ultrasound transducer located at the end of the Bourdon tube, a sheath surrounding the Bourdon tube and the ultrasound transducer, and a rotating shaft connected to one end of the Bourdon tube that can rotate around its own axis. During ultrasound examination, the sheath extends into human tissues such as the cardiovascular system, bronchi, and digestive tract. The rotating shaft can drive the Bourdon tube and ultrasound transducer to rotate 360° within the sheath, achieving a circumferential scan of the lesion's cross-sectional image. However, it still lacks axial depth detection data, cannot form a 3D stereoscopic simulation image, and cannot accurately locate the lesion's position. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an ultrasonic probe and ultrasonic diagnostic equipment, which realizes intracavitary ultrasonic 3D imaging by setting an axial pull-back adjustment mechanism.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An ultrasonic probe, comprising:

[0007] The probe housing has an internal mounting channel that runs through its length.

[0008] The outer sheath is fixed at one end within the mounting channel;

[0009] A sliding shaft is fixed in the circumferential direction and slidably connected to the inner side of the probe housing; the sliding shaft has an inner cavity that extends through itself along its own axis.

[0010] A connecting sleeve is fixedly connected to one end of the sliding shaft;

[0011] A rotating shaft is fixed relative to the axial direction and rotatably connected to the inner side of the connecting sleeve, with one end of the rotating shaft extending into the inner cavity of the shaft; a signal line channel extends through the interior of the rotating shaft along its own length direction;

[0012] A spring tube, one end of which is fixedly connected to the rotating shaft, and the other end of which extends into the interior of the outer sheath tube;

[0013] An ultrasonic transducer is located at the other end of the spring tube;

[0014] The signal line has one end connected to the ultrasonic transducer and the other end connected to the signal connector, and the signal line passes through the signal line channel inside the rotating shaft.

[0015] Furthermore, a fixed cylinder is coaxially sleeved on the outer periphery of the sliding shaft, and the probe housing is fixedly connected to the outside of the fixed cylinder; the fixed cylinder is provided with a groove penetrating its own wall, the length direction of the groove is set along the axial direction of the sliding shaft, a sliding pin is fixedly connected to the sliding shaft, and the sliding pin is slidably connected to the groove along the length direction of the groove.

[0016] Furthermore, the fixed cylinder and the probe housing are fixed together by fixing pins.

[0017] Furthermore, the wall of the fixed cylinder is provided with a first pin mounting hole, and the shell wall of the probe housing is provided with a second pin mounting hole. The fixing pin passes through the first pin mounting hole and the second pin mounting hole, and the fixing pin is interference-fitted with both the first pin mounting hole and the second pin mounting hole.

[0018] Furthermore, a bushing is fixed to the inner side of the fixed cylinder and sleeved on the outer periphery of the sliding shaft, and the bushing is clearance-fitted with the sliding shaft.

[0019] Furthermore, the fixed cylinder is provided with a bushing limiting structure for axially limiting the bushing.

[0020] Furthermore, the inner wall of the near end of the fixed cylinder is provided with a bushing mounting step, and the bushing can extend into the bushing mounting step from the opening at the near end of the fixed cylinder. A bushing limiting nut is also connected to the opening at the near end of the fixed cylinder, and the bushing limiting nut presses against the near end of the bushing to axially fix the bushing on the bushing mounting step.

[0021] Furthermore, the probe housing has a proximal opening and a distal opening at its two axial ends, and the outer sheath extends outward from the distal opening; the sliding shaft includes a proximal end extending outward from the proximal opening of the probe housing, and the connecting sleeve is fixed to the outer periphery of the proximal end of the sliding shaft by fasteners.

[0022] Furthermore, a bearing is provided between the inner wall of the connecting sleeve and the outer wall of the rotating shaft, and the rotating shaft is kept axially fixed relative to the connecting sleeve and rotates circumferentially relative to it by means of the bearing.

[0023] Furthermore, the connecting sleeve is provided with a bearing limiting structure for axially limiting the bearing.

[0024] Furthermore, the inner wall of the connecting sleeve is provided with a bearing mounting step, and the bearing can extend into the bearing mounting step from the opening at the near end of the connecting sleeve. A bearing retaining ring is also fixedly connected inside the connecting sleeve, and the bearing retaining ring abuts against the near end of the bearing to axially fix the bearing on the bearing mounting step.

[0025] Furthermore, a connecting seat is fixedly connected to the proximal end of the rotating shaft, and the signal connector is fixedly connected to the connecting seat; at least one pair of levers are also fixedly connected to the connecting seat, and the pair of levers are used to drive the connecting seat and the rotating shaft to rotate.

[0026] An ultrasound diagnostic device includes: a main unit, a probe driver, a display, and an ultrasound probe as described above; the probe driver is connected to the ultrasound probe and drives the rotating shaft to rotate; the main unit is connected to the ultrasound probe and the display, and is used to convert ultrasound signals into ultrasound images and display them on the display.

[0027] This invention offers the following advantages: The rotation of the shaft drives the spring tube, its ultrasonic transducer, and the sheath to rotate relative to each other circumferentially, enabling the ultrasonic transducer to rotate 360° within the sheath. The connecting sleeve drives the sliding shaft to slide axially within the probe housing, allowing the shaft, spring tube, ultrasonic transducer, and outer sheath to extend and retract axially. This enables automatic adjustment of the ultrasonic transducer's axial position, facilitating 3D ultrasound scanning and imaging for precise location of lesions. This ultrasound probe only requires the shaft to be fixed axially and rotated circumferentially within the connecting sleeve, and the connecting sleeve and sliding shaft to be fixedly connected, to achieve 3D ultrasound scanning and imaging. It features fewer components, a simpler structure, and easier assembly. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is an exploded view of the ultrasonic probe in an embodiment of this utility model;

[0030] Figure 2 This is an overall cross-sectional view of the ultrasonic probe in an embodiment of this utility model;

[0031] Figure 3 This is a partial cross-sectional view of the ultrasonic probe in an embodiment of the present invention.Figure 1 ;

[0032] Figure 4 This is a partial cross-sectional view of the ultrasonic probe in an embodiment of the present invention. Figure 2 ;

[0033] Figure 5 This is a schematic diagram of the structure of the fixed cylinder in an embodiment of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Probe housing; 110. Distal housing; 120. Proximal housing; 130. First sealing ring; 140. Waterproof cap mounting base; 150. Fixing pin; 210. Fixing cylinder; 211. Slide groove; 212. Bushing mounting step; 220. Sliding shaft; 230. Connecting sleeve; 231. Bearing mounting step; 240. Sliding pin; 250. Bushing; 260. Bushing limit nut; 270. Fastener; 280. Positioning pin; 310. Rotating shaft; 320. Bearing; 330, Bearing retaining ring; 340, Countersunk screw; 350, Connecting seat; 351, Boss; 352, Connecting hole; 360, Set screw; 370, Connecting pin; 380, Lever; 410, Outer sheath; 420, Spring tube; 430, Adapter tube; 440, Sheath locking nut; 450, Second sealing ring; 460, Sealing ring retaining end cap; 510, Ultrasonic transducer; 520, Signal cable; 530, Signal connector; 540, Metal sleeve; 610, Waterproof sleeve. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. The distal end refers to the end furthest from the operator, and the proximal end refers to the end closest to the operator. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] like Figure 1An ultrasonic probe as shown in Figure 5 includes a probe housing, an outer sheath 410, a sliding shaft 220, a connecting sleeve 230, a rotating shaft 310, a spring tube 420, an ultrasonic transducer 510, a signal line 520, and a signal connector 530.

[0039] In this embodiment, the probe housing has an internal mounting channel extending along its length. The probe housing has proximal and distal openings at its axial ends, respectively, both communicating with the mounting channel. One end of the outer sheath 410 is fixed within the mounting channel, and the other end extends outward from the distal opening. A sliding shaft 220 is circumferentially fixed and slidably connected to the inner side of the probe housing. The sliding shaft 220 has an internal cavity extending along its axial direction. A connecting sleeve 230 is fixedly connected to the proximal end of the sliding shaft 220 and located outside the proximal end of the probe housing. A rotating shaft 310 is axially fixed and rotatably connected to the inner side of the connecting sleeve 230, with one end of the rotating shaft 310 extending into the internal cavity of the sliding shaft 220. A signal line channel extends along the length of the rotating shaft 310. One end of the spring tube 420 is fixedly connected to the rotating shaft 310, and the other end of the spring tube 420 extends into the interior of the outer sheath 410. The ultrasonic transducer 510 is connected to the other end of the spring tube 420 that extends into the outer sheath 410. One end of the signal line 520 is connected to the ultrasonic transducer 510, and the other end of the signal line 520 is connected to the signal connector 530. The signal line 520 passes through the signal line channel inside the rotating shaft 310.

[0040] When using this ultrasound probe for ultrasound examination, the outer sheath 410 extends into human tissues such as the cardiovascular system, bronchi, and digestive tract. The rotation of the rotating shaft 310 drives the spring tube 420 and its ultrasound transducer 510 to rotate circumferentially within the outer sheath 410, enabling the ultrasound transducer 510 to rotate 360° within the sheath to scan ultrasound images. The connecting sleeve 230 drives the sliding shaft 220 to slide axially within the probe housing, causing relative axial displacement between the rotating shaft 310, the spring tube 420, and the ultrasound transducer 510 and the outer sheath 410. Adjusting the axial position of the ultrasound transducer 510, combined with its circumferential rotation, allows for 3D ultrasound scanning and imaging of the target tissue, facilitating precise location of lesions. This ultrasonic probe only requires the rotating shaft 310 to be fixed axially and rotated circumferentially within the connecting sleeve 230, and the connecting sleeve 230 and the sliding shaft 220 to be fixedly connected, to achieve 3D ultrasonic scanning imaging. It has the advantages of fewer components, simple structure, and easy assembly.

[0041] In some embodiments, the probe housing includes a detachably connected proximal housing 120 and a distal housing 110, the internal spaces of which communicate to form an installation channel. The distal housing 110 contains a sheath locking nut 440 for clamping and fixing one end of the outer sheath 410 within the distal housing 110. The proximal housing 120 is threaded onto the outer periphery of the distal housing 110, and a first sealing ring 130 is fitted around the outer periphery of the distal housing 110 between the proximal housing 120 and the distal housing 110. This probe housing, assembled from the proximal housing 120 and the distal housing 110, allows for easier initial assembly by first fixing the outer sheath 410 within the distal housing 110 using the sheath locking nut 440, and then threading the proximal housing 120 onto the outside of the distal housing 110. The first sealing ring 130 also improves the sealing between the proximal housing 120 and the distal housing 110.

[0042] Specifically, the inner wall of the distal housing 110 is provided with internal threads, and the outer side of the sheath locking nut 440 is provided with external threads. The external threads of the sheath locking nut 440 are threaded onto the internal threads of the inner wall of the distal housing 110. The distal end of the sheath locking nut 440 is provided with an outwardly extending tapered portion. The outer sheath 410 is sleeved on the outer circumference of the tapered portion of the sheath locking nut 440. By rotating the sheath locking nut 440, the tapered portion can be extended into the inner side of the outer sheath 410, and the outer sheath 410 is pressed and fixed on the inner wall of the distal housing 110 to achieve a reliable fixed connection between the outer sheath 410 and the distal housing 110.

[0043] In some embodiments, a metal sleeve 540 is laser-welded to the distal end of the spring tube 420, and the ultrasonic transducer 510 is fixed inside the metal sleeve 540 by adhesive dispensing. The metal sleeve 540 has slots exposing the ultrasonic transmitting and receiving positions of the ultrasonic transducer 510. A connector 430 is laser-welded to the proximal end of the spring tube 420, and the other end of the connector 430 is fixed to the rotating shaft 310 by laser welding. The sheath locking nut 440 has an internal hole extending axially, and one end of the connector 430 passing through the internal hole of the sheath locking nut 440 is welded to the rotating shaft 310. During assembly, the ultrasonic transducer 510 is first fixed inside the metal sleeve 540. Then, the metal sleeve 540 and the adapter tube 430 are welded to both ends of the spring tube 420 to form an inner tube assembly. Then, the rotating shaft 310 is welded to the adapter tube 430. Finally, the spring tube 420 and the adapter tube 430 are passed through the inner hole of the sheath locking nut 440 and extended into the outer sheath tube 410.

[0044] Furthermore, a second sealing ring 450 is provided between the inner hole of the sheath locking nut 440 and the outer wall of the adapter tube 430. The second sealing ring 450 is interference-fitted with the inner hole of the sheath locking nut 440 to achieve a sealed connection between the sheath locking nut 440 and the adapter tube 430. A sealing ring limiting end cap 460 is also threaded onto the outer periphery of the proximal end of the sheath locking nut 440. The sealing ring limiting end cap 460 blocks the proximal end side of the second sealing ring 450 to prevent the second sealing ring 450 from axially loosening.

[0045] In this embodiment, a fixed cylinder 210 is coaxially sleeved on the outer periphery of the sliding shaft 220. The fixed cylinder 210 is located inside the proximal housing 120, and the proximal end of the fixed cylinder 210 is sleeved on the outer periphery of the proximal end of the distal housing 110. The proximal end of the fixed cylinder 210 and the proximal housing 120 are fixed together by a fixing pin 150. Specifically, the cylinder wall of the fixed cylinder 210 is provided with a first pin mounting hole 213, and the shell wall of the proximal housing 120 is provided with a second pin mounting hole. The fixing pin 150 passes through the first pin mounting hole 213 and the second pin mounting hole, and the fixing pin 150 is interference-fitted with both the first pin mounting hole 213 and the second pin mounting hole; thus, the fixed cylinder 210 and the proximal housing 120 are fixedly connected. During assembly, the sliding shaft 220 and the fixed cylinder 210 can be assembled together first, and then the proximal housing 120 can be fixed to the outside of the fixed cylinder 210 by the fixing pin 150, making assembly more convenient.

[0046] Furthermore, a bushing 250 is fixed to the inner side of the fixed cylinder 210 and sleeved around the outer periphery of the sliding shaft 220. The fixed cylinder 210 is provided with a bushing limiting structure for axially limiting the bushing 250, and the bushing 250 and the sliding shaft 220 are in clearance fit. The bushing 250 can increase the sliding damping between the sliding shaft 220 and the fixed cylinder 210, improve the stability of the sliding shaft 220 during the sliding process, facilitate precise control of the sliding stroke of the sliding shaft 220, and help improve the adjustment accuracy of the axial position of the spring tube 420. Specifically, the bushing limiting structure includes a bushing mounting step 212 and a bushing limiting nut 260. The bushing mounting step 212 is located on the inner wall of the near end of the fixed cylinder 210, which is the part with an enlarged inner diameter of the fixed cylinder 210. The bushing 250 can extend into the bushing mounting step 212 through the opening at the near end of the fixed cylinder 210. The inner wall of the fixed cylinder 210 is also provided with internal threads, and the outer circumference of the bushing limiting nut 260 is provided with external threads. One end of the bushing limiting nut 260 is threaded to the inner wall of the fixed cylinder 210, and the bushing limiting nut 260 presses against the near end of the bushing 250 to axially fix the bushing 250 on the bushing mounting step 212. The bushing 250 and the bushing limiting nut 260 can limit the axial sliding of the bushing 250 and improve the structural stability of the ultrasonic probe.

[0047] In this embodiment, the sliding shaft 220 includes a proximal end extending outward from the proximal opening of the proximal housing 120. The connecting sleeve 230 is completely located outside the proximal housing 120, and the connecting sleeve 230 is sleeved and fixed to the outer periphery of the proximal end of the sliding shaft by fasteners 270. A positioning pin 280 is fixedly connected to the outer periphery of the connecting sleeve 230. Since the connecting sleeve 230 is directly exposed outside the proximal housing 120, the connecting sleeve 230 can drive the sliding shaft 220, the rotating shaft 310, and the spring tube 420 to move forward or backward axially relative to the outer sheath tube 410 when pulled by an external force. The extension and retraction adjustment process of the spring tube 420 does not require disassembling or removing any parts of the ultrasonic probe. This not only makes the operation of adjusting the spring tube 420 simpler, but also helps to maintain the overall sealing of the ultrasonic probe and protect the various components inside the ultrasonic probe. Specifically, the outer periphery of the sliding shaft 220 is provided with a first screw mounting hole, and the shell wall of the proximal housing 120 is provided with a second screw mounting hole. The fastener 270 is threaded into the first screw mounting hole and the second screw mounting hole. The fastener 270 is specifically a cross-head pan screw; thus, the sliding shaft 220 and the proximal housing 120 are fixedly connected.

[0048] In this embodiment, a bearing 320 is provided between the inner wall of the connecting sleeve 230 and the outer wall of the rotating shaft 310. A bearing limiting structure is provided inside the connecting sleeve 230 to axially limit the bearing 320. The rotating shaft 310 is kept axially fixed relative to the connecting sleeve 230 and rotates circumferentially relative to it via the bearing 320. The bearing limiting structure includes a bearing mounting step 231 and a bearing limiting ring 330. The bearing mounting step 231 is located on the inner wall near the end of the connecting sleeve 230, which is the portion of the connecting sleeve 230 with an enlarged inner diameter. The bearing 320 can extend into the bearing mounting step 231 from the opening near the end of the fixing sleeve 210. The bearing limiting ring 330 presses against the near end of the bushing 250 to axially fix the bearing 320 onto the bearing mounting step 231. The bearing 320 and bearing retaining ring 330 are provided to restrict the axial sliding of the bearing 320, so that the rotating shaft 310 can stably maintain relative circumferential rotation and relative axial sliding with the connecting sleeve 230. Specifically, the bearing retaining ring 330 is an open annular structure. The bearing retaining ring 330 is axially fixed to the inner wall of the connecting sleeve 230 by multiple countersunk screws 340, and the bearing retaining ring 330 presses against the outer ring of the bearing 320. By pressing the outer ring of the bearing 320 with the bearing retaining ring 330, the bearing 320 is restricted from axial displacement.

[0049] In this embodiment, the near end of the rotating shaft 310 is fixedly connected to the connecting seat 350 by a plurality of circumferentially arranged set screws 360. The signal connector 530 is threaded into the inside of the connecting seat 350, and the signal connector 530 and the connecting seat 350 are fixed together by a plurality of circumferentially arranged connecting pins 370. The connecting pins 370 and the signal connector 530 are interference-fitted, and the connecting pins 370 and the connecting seat 350 are also interference-fitted, thus achieving reliable fixation between the rotating shaft 310, the connecting seat 350 and the signal connector 530.

[0050] In this embodiment, at least one pair of levers 380 are fixedly connected to the connecting seat 350. The pair of levers 380 are used to drive the connecting seat 350 and the rotating shaft 310 to rotate around their own axial direction. The peripheral outer wall of the connecting seat 350 is provided with a boss 351, and a mounting hole can be provided on the boss 351. The levers 380 are inserted into the mounting hole and are interference-fitted with the mounting hole. At least one pair of levers 380 are spaced apart on the peripheral outer wall of the connecting seat 350, and at least one pair of levers 380 are used to connect with the power output terminal of the probe driver to transmit power.

[0051] In some embodiments, the ultrasonic probe further includes a waterproof sleeve 610, which is a flexible soft rubber sleeve. The waterproof sleeve 610 is fitted around the outer periphery of the distal housing 110 and around the outer periphery of the outer sheath 410 near the distal housing 110. A waterproof cap holder 140 is also fixed to the outer periphery of the proximal housing 120.

[0052] This utility model embodiment also provides an ultrasound diagnostic device, including a probe driver, a main unit, a display, and an ultrasound probe as described above. The driving end of the probe driver is connected to a lever 380, which drives the rotating shaft 310 to rotate. The ultrasound signal obtained by the ultrasound transducer 510 is transmitted to the main unit through a signal line 520 and a signal connector 530, and is processed to generate an ultrasound image. The display is used to show the ultrasound image. This ultrasound diagnostic device can drive the lever 380 to rotate via the probe driver, or adjust the axial relative position of the spring tube 420 and the outer sheath 410 by pulling the connecting sleeve 230, so that the outer sheath 410 and the ultrasound transducer 510 on the spring tube 420 are in a relatively reasonable relative position, and the ultrasound transducer 510 can be properly aligned with the transparent end of the outer sheath 410 for normal operation. This type of ultrasound probe, in addition to being able to perform 3D ultrasound scanning imaging of target tissue and accurately locate the location of lesions, also has the advantages of fewer components, simple structure, and easy assembly.

[0053] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An ultrasonic probe, characterized in that, include: The probe housing has an internal mounting channel that runs through its length. The outer sheath (410) is fixed at one end inside the mounting channel; A sliding shaft (220) is fixed in the circumferential direction and slidably connected to the inner side of the probe housing; the sliding shaft (220) has an inner cavity that extends through itself along its axial direction. A connecting sleeve (230) is fixedly connected to one end of the sliding shaft (220); A rotating shaft (310) is fixed relative to the axial direction and rotatably connected to the inner side of the connecting sleeve (230), and one end of the rotating shaft (310) extends into the inner cavity of the shaft. A spring tube (420) has one end fixedly connected to the rotating shaft (310) and the other end extending into the interior of the outer sheath tube (410); An ultrasonic transducer (510) is located at the other end of the spring tube (420).

2. The ultrasonic probe according to claim 1, characterized in that, A fixed cylinder (210) is coaxially sleeved on the outer periphery of the sliding shaft (220), and the probe housing is fixedly connected to the outside of the fixed cylinder (210). The fixed cylinder (210) is provided with a sliding groove (211) that penetrates its own cylinder wall. The length direction of the sliding groove (211) is set along the axial direction of the sliding shaft (220). A sliding pin (240) is fixedly connected to the sliding shaft (220), and the sliding pin (240) is slidably connected to the sliding groove (211) along the length direction of the sliding groove (211).

3. The ultrasonic probe according to claim 2, characterized in that, The fixed cylinder (210) and the probe housing are fixed together by a fixing pin (150).

4. The ultrasonic probe according to claim 2, characterized in that, The inner side of the fixed cylinder (210) is fixed with a bushing (250) sleeved on the outer periphery of the sliding shaft (220), and the bushing (250) is clearance-fitted with the sliding shaft (220).

5. The ultrasonic probe according to claim 4, characterized in that, The fixed cylinder (210) is provided with a bushing limiting structure for axially limiting the bushing (250).

6. The ultrasonic probe according to claim 1, characterized in that, The probe housing has a proximal opening and a distal opening at its two axial ends, and the outer sheath (410) extends outward from the distal opening; the sliding shaft (220) includes a proximal end of the sliding shaft extending outward from the proximal opening of the probe housing, and the connecting sleeve (230) is sleeved and fixed to the outer periphery of the proximal end of the sliding shaft by fasteners (270).

7. The ultrasonic probe according to claim 1, characterized in that, A bearing (320) is provided between the inner wall of the connecting sleeve (230) and the outer wall of the rotating shaft (310). The rotating shaft (310) is kept axially fixed relative to the connecting sleeve (230) and rotates circumferentially relative to it by means of the bearing (320).

8. The ultrasonic probe according to claim 7, characterized in that, The connecting sleeve (230) is provided with a bearing limiting structure for axially limiting the bearing (320).

9. The ultrasonic probe according to claim 1, characterized in that, A connector (350) is fixedly connected to the proximal end of the rotating shaft (310), and a signal connector (530) is fixedly connected to the connector (350); at least one pair of levers (380) are fixedly connected to the connector (350), and the pair of levers (380) are used to drive the connector (350) and the rotating shaft (310) to rotate.

10. An ultrasound diagnostic device, characterized in that, include: The host, probe driver, display, and ultrasound probe as described in any one of claims 1 to 9, wherein the probe driver is connected to the ultrasound probe and drives the rotating shaft (310) to rotate; the host is connected to the ultrasound probe and the display and is used to convert ultrasound signals into ultrasound images for display on the display.

Images