Ultrasonic probe movement mechanism and ultrasonic probe assembly

Abstract

The present invention provides an ultrasonic probe motion mechanism and an ultrasonic probe assembly, which belongs to the field of medical device technology, and can at least partially solve the problems of large size, complex structure and difficult installation of existing ultrasonic probe motion mechanisms. An ultrasonic probe motion mechanism of the present invention includes: a first telescopic assembly, including a first hollow cylindrical structure, the outer wall of the first hollow cylindrical structure has a first thread structure; a second telescopic assembly, including a second hollow cylindrical structure, the outer wall of the second hollow cylindrical structure has a second thread, the inner wall has a third thread, and the second thread is compatible with the first thread; a third telescopic assembly, including a third hollow cylindrical structure, the outer wall of the third hollow cylindrical structure has a fourth thread, and the fourth thread is compatible with the third thread; when the second hollow cylindrical structure rotates, the first hollow cylindrical structure and the third hollow cylindrical structure can be moved in opposite directions to achieve the telescopic movement of the ultrasonic probe.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an ultrasonic probe motion mechanism and an ultrasonic probe assembly. Background Art

[0002] High-intensity focused ultrasound therapy technology can form high-intensity, continuous ultrasound energy on the lesion by focusing ultrasound, thereby producing transient high-temperature effects, cavitation effects, mechanical effects and sonication effects, causing cell membranes and nuclear membranes to rupture, proteins to coagulate, and selectively causing coagulative necrosis of lesion tissues, so that the lesions lose their ability to proliferate, infiltrate and metastasize. High-intensity focused ultrasound therapy technology has been clinically recognized as a new technology for treating tumors and other diseases, and is widely used in the treatment of a variety of tumors and non-tumor diseases.

[0003] When using high-intensity focused ultrasound technology for treatment, a B-ultrasound probe is required to monitor the image of the lesion. During treatment, the B-ultrasound probe movement mechanism drives the B-ultrasound probe to extend and rotate to obtain the images required for treatment for the doctor to monitor the treatment process and effect.

[0004] However, the existing B-ultrasound probe movement mechanism is large in size, complex in structure and difficult to install. Summary of the invention

[0005] The present invention at least partially solves the problems of the existing ultrasonic probe movement mechanism being large in size, complex in structure and difficult to install, and provides an ultrasonic probe movement mechanism which is small in size, simple in structure and easy to install.

[0006] The technical solution adopted to solve the technical problem of the present invention is an ultrasonic probe motion mechanism, comprising:

[0007] A first telescopic assembly comprises a first hollow cylindrical structure, wherein an inner wall of the first hollow cylindrical structure has a first thread structure;

[0008] A second telescopic assembly includes a second hollow cylindrical structure, which is inserted into the first hollow cylindrical structure, wherein the outer wall of the second hollow cylindrical structure has a second thread, and the inner wall of the second hollow cylindrical structure has a third thread, and the second thread is adapted to the first thread;

[0009] The third telescopic component includes a third hollow cylindrical structure, which is inserted into the second hollow cylindrical structure. The outer wall of the third hollow cylindrical structure has a fourth thread, and the fourth thread is compatible with the third thread. When the second hollow cylindrical structure rotates about its axis, the first hollow cylindrical structure and the third hollow cylindrical structure can move respectively along the axis of the second hollow cylindrical structure and in opposite directions to realize the telescopic movement mechanism of the ultrasonic probe.

[0010] Further preferably, the second hollow cylindrical structure is divided into a first zone, a second zone, and a third zone in sequence along its axial direction, the outer diameter of the second zone is larger than the outer diameters of the first zone and the third zone, the second thread is located in the second zone, and the third thread is located in the first zone.

[0011] It is further preferred that the pitch of the third thread is greater than the pitch of the second thread, so that when the second hollow cylindrical structure rotates, the movement distance of the third hollow cylindrical structure relative to the second hollow cylindrical structure is greater than the movement distance of the first hollow cylindrical structure relative to the second hollow cylindrical structure.

[0012] Further preferably, the second telescopic assembly further comprises a first driving structure for driving the second hollow cylindrical structure to rotate about its axis.

[0013] It is further preferred that the outer wall of the third zone of the second hollow cylindrical structure has a first groove; the first driving structure includes: a first gear, which is an external gear, is hollow cylindrical, and is sleeved on the third zone of the second hollow cylindrical structure, the inner wall of the first gear has a first protrusion, the inner diameter of the first gear is transitionally matched with the outer diameter of the third zone of the second hollow cylindrical structure, and the first groove matches the first protrusion, so that when the first gear rotates, it can drive the second hollow cylindrical structure to rotate, and the relative positions of the first gear and the second hollow cylindrical structure in the circumferential direction remain unchanged; the second gear, which is an external gear, meshes with the first gear; a first motor, connected to the second gear, is used to drive the second gear to rotate, so as to drive the first gear to rotate.

[0014] It is further preferred that the first gear is divided into a first part and a second part connected to the first part along its axial direction, the second part is farther away from the second zone of the second hollow cylindrical structure than the first part, the first part and the second part have the same inner diameter, the first part is located between the first hollow cylindrical structure and the second hollow cylindrical structure, the outer wall of the first part is provided with a first limit block, and the tooth pattern is provided on the second part; a first limit groove is provided on the inner wall of the first hollow cylindrical structure near the third zone, the first limit groove matches the first limit block, and is used to keep the relative position of the first hollow cylindrical structure and the first gear unchanged in the axial direction.

[0015] Further preferably, the first limiting block is formed by a plurality of round balls, so that the first limiting block can slide in the first limiting groove.

[0016] Further preferably, the third telescopic assembly further comprises: a second driving structure, used for causing the third hollow cylindrical structure to rotate about its axis.

[0017] It is further preferred that the outer wall of the third hollow cylindrical structure has a second groove; the second driving structure includes: a guide member, which is at least partially arranged between the first hollow cylindrical structure and the second hollow cylindrical structure, and is located in the first area of ​​the second hollow cylindrical structure, the guide member is hollow cylindrical, and its outer wall has a third groove, and its inner wall has a second protrusion, the inner diameter of the guide member is transitionally matched with the outer diameter of the first area of ​​the second hollow cylindrical structure, and the second protrusion matches the second groove, so that when the guide member rotates, it can drive the third hollow cylindrical structure to rotate, wherein the guide member and the The relative position of the third hollow cylindrical structure in the circumferential direction remains unchanged; the third gear is an external gear, in the shape of a hollow cylinder, and is sleeved on the guide member. The inner wall of the third gear has a third protrusion, and the inner diameter of the third gear and the outer diameter of the guide member are transitionally matched, and the third protrusion matches the third groove, so that when the third gear rotates, it can drive the guide member to rotate, wherein the relative position of the third gear and the guide member in the circumferential direction remains unchanged; the fourth gear is an external gear, meshing with the third gear; a second motor is connected to the fourth gear, and is used to drive the fourth gear to rotate, so as to drive the third gear to rotate.

[0018] It is further preferred that a second limit block is provided on the outer wall of the first zone of the second hollow cylindrical structure; a second limit groove is provided on the inner wall of the guide member, and the second limit groove and the second limit block match, so that the relative position of the second hollow cylindrical structure and the guide member in the axial direction remains unchanged.

[0019] It is further preferred that a third limit block is provided on the outer wall of the third gear; a third limit groove is provided on the inner wall of the first area of ​​the first hollow cylindrical structure close to the second hollow cylindrical structure, and the third limit groove matches the third limit block, so that the relative position of the first hollow cylindrical structure and the third gear in the axial direction remains unchanged.

[0020] It is further preferred that the second limiting block and the third limiting block are respectively formed of a plurality of round beads, so that the second limiting block can slide in the second limiting groove and the third limiting block can slide in the third limiting groove.

[0021] The technical solution adopted to solve the technical problem of the present invention is an ultrasonic probe assembly, comprising:

[0022] The above-mentioned ultrasonic probe motion mechanism;

[0023] An ultrasonic probe has one end disposed in the third hollow cylindrical structure.

[0024] Further preferably, the ultrasound probe assembly further comprises: a mounting member for fixing the ultrasound probe to an end of the third hollow cylindrical structure close to the first region of the second hollow cylindrical structure.

[0025] Further preferably, the ultrasonic probe assembly further comprises: a fixing member in a hollow cylindrical shape, which is sleeved on the third gear and fixed in relative position with the third gear in the axial direction.

[0026] Further preferably, the ultrasound probe is a B-ultrasound probe.

[0027] In the ultrasonic probe motion mechanism of this embodiment, the extension or contraction of the second hollow cylindrical structure can be achieved by only driving the second hollow cylindrical structure to rotate, which has the advantages of simple structure, easy operation, and convenient disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 is a cross-sectional view of an ultrasound probe assembly according to an embodiment of the present invention;

[0030] Figure 2 is a cross-sectional view of an ultrasound probe assembly according to an embodiment of the present invention;

[0031] Figure 3 It is a structural exploded view of an ultrasound probe assembly according to an embodiment of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the extension and retraction process of an ultrasound probe assembly according to an embodiment of the present invention;

[0033] Among them, the accompanying drawings are marked as follows: 1 first hollow cylindrical structure; 1a first thread; 1b first limiting groove; 1c third limiting groove; 2 second hollow cylindrical structure; 2a second thread; 2b third thread; 2c first groove; 2d second limiting block; d first area; e second area; f third area; 21 first gear; 21a first protrusion; 21b first limiting block; 22 second gear; 23 first motor; 3 third hollow cylindrical structure; 3a fourth thread; 3b second groove; 31 guide; 31a second protrusion; 31b third groove; 31c second limiting groove;

[0034] 32 the third gear; 32b the third limiting block; 33 the fourth gear; 34 the second motor; 41 the ultrasonic probe; 42 the mounting piece; 43 the fixing piece. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale. In addition, some well-known parts may not be shown in the drawings.

[0037] Many specific details of the present invention are described below, such as component structures, materials, dimensions, processing techniques and technologies, in order to more clearly understand the present invention. However, as those skilled in the art will appreciate, the present invention may be implemented without following these specific details.

[0038] Embodiment 1:

[0039] like Figures 1 to 4 As shown, this embodiment provides an ultrasonic probe motion mechanism, comprising:

[0040] A first telescopic assembly comprises a first hollow cylindrical structure 1, wherein the inner wall of the first hollow cylindrical structure 1 has a first thread 1a structure;

[0041] The second telescopic assembly includes a second hollow cylindrical structure 2, which is inserted into the first hollow cylindrical structure 1. The outer wall of the second hollow cylindrical structure 2 has a second thread 2a, and the inner wall has a third thread 2b. The second thread 2a is adapted to the first thread 1a.

[0042] The third telescopic component includes a third hollow cylindrical structure 3, which is inserted into the second hollow cylindrical structure 2. The outer wall of the third hollow cylindrical structure 3 has a fourth thread 3a, and the fourth thread 3a is adapted to the third thread 2b. When the second hollow cylindrical structure 2 rotates about its axis, the first hollow cylindrical structure 1 and the third hollow cylindrical structure 3 can move respectively along the axis of the second hollow cylindrical structure 2 and in relatively opposite directions to realize the telescopic movement mechanism of the ultrasonic probe.

[0043] That is to say, the ultrasonic probe movement mechanism of this embodiment includes a first hollow cylindrical structure 1, a second hollow cylindrical structure 2 and a third hollow cylindrical structure 3 which are sequentially arranged from the outside to the inside, and the second thread 2a of the second hollow cylindrical structure 2 matches the first thread 1a of the first hollow cylindrical structure 1, and the third thread 2b of the second hollow cylindrical structure 2 matches the fourth thread 3a of the third hollow cylindrical structure 3.

[0044] And because the second thread 2a and the third thread 2b are in opposite directions, when the second hollow cylindrical structure 2 rotates with its axis as the axis, the first hollow cylindrical structure 1 and the third hollow cylindrical structure 3 can be moved respectively along the axis of the second hollow cylindrical structure 2 and in relatively opposite directions, for example, the first hollow cylindrical structure 1 and the third hollow cylindrical structure 3 are moved respectively in the direction away from the second hollow cylindrical structure 2 to achieve the extension of the ultrasonic probe motion mechanism; or, the first hollow cylindrical structure 1 and the third hollow cylindrical structure 3 are moved respectively in the direction close to the second hollow cylindrical structure 2 to achieve the contraction of the ultrasonic probe motion mechanism, such as Figure 4 As shown, a represents the stroke of the third hollow cylindrical structure 3, b represents the stroke of the second hollow cylindrical structure 2, and c represents the total stroke of the ultrasonic probe motion mechanism.

[0045] In the ultrasonic probe motion mechanism of this embodiment, the extension or contraction of the second hollow columnar structure 2 can be achieved by simply driving the second hollow columnar structure 2 to rotate, which has the advantages of simple structure, easy operation, and convenient assembly and disassembly.

[0046] Preferably, the second hollow cylindrical structure 2 is divided into a first zone d, a second zone e, and a third zone f along its axial direction, the outer diameter of the second zone e is larger than the outer diameters of the first zone d and the third zone f, the second thread 2a is located in the second zone e, and the third thread 2b is located in the first zone d.

[0047] That is to say, the outer wall of the second hollow cylindrical structure 2 located in the second zone e is equivalent to a step shape. Due to the step-shaped setting and the second thread 2a being located in the second zone e, there is a certain gap between the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2 at the positions of the first zone d and the third zone f.

[0048] When the second thread 2a is located in the second zone e, the preferred first hollow cylindrical structure 1 can move in the direction from the second zone e to the first zone d and away from the first zone d; and when the third thread 2b is located in the first zone d, the preferred third hollow cylindrical structure 3 can move in the direction from the second zone e to the third zone f and away from the third zone f.

[0049] In this way, it is only necessary to set the second thread 2a and the third thread 2b at a part of the second hollow cylindrical structure 2, which can reduce the preparation complexity of the second hollow cylindrical structure 2 without affecting the moving distance of the first hollow cylindrical structure 1 and the third hollow cylindrical structure 3.

[0050] It should be noted that, during the expansion and contraction process, the axes of the first hollow columnar structure 1 , the second hollow columnar structure 2 and the third hollow columnar structure 3 are kept parallel as much as possible.

[0051] Preferably, the pitch of the third thread 2b is greater than the pitch of the second thread 2a, so that when the second hollow cylindrical structure 2 rotates, the movement distance of the third hollow cylindrical structure 3 relative to the second hollow cylindrical structure 2 is greater than the movement distance of the first hollow cylindrical structure 1 relative to the second hollow cylindrical structure 2.

[0052] That is to say, when the second hollow cylindrical structure 2 rotates, the movement distance of the third hollow cylindrical structure 3 is not equal to that of the first hollow cylindrical structure 1, so it is convenient to set a driving component on the first hollow cylindrical structure 1 with a smaller movement distance, and at the same time, it can ensure that the third hollow cylindrical structure 3 without a driving component has a larger stroke.

[0053] Preferably, the second telescopic assembly further includes a first driving structure for driving the second hollow cylindrical structure 2 to rotate about its axis.

[0054] That is to say, when the first driving structure drives the second hollow cylindrical structure 2 to rotate, the first hollow cylindrical structure 1 and the third hollow cylindrical structure 3 can be respectively moved along the axis of the second hollow cylindrical structure 2 and in opposite directions to achieve the extension and retraction of the ultrasonic probe motion mechanism. Specifically, the extension or retraction of the ultrasonic probe motion mechanism is changed by driving the second hollow cylindrical structure 2 to rotate.

[0055] The provision of the first driving structure facilitates the extension or contraction operation of the ultrasonic probe movement mechanism.

[0056] Preferably, the outer wall of the third region f of the second hollow cylindrical structure 2 has a first groove 2c;

[0057] The first driving structure includes:

[0058] The first gear 21 is an external gear in a hollow cylindrical shape and is sleeved in the third region f of the second hollow cylindrical structure 2. The inner wall of the first gear 21 has a first protrusion 21a. The inner diameter of the first gear 21 is transitionally matched with the outer diameter of the third region f of the second hollow cylindrical structure 2, and the first groove 2c matches the first protrusion 21a, so that when the first gear 21 rotates, the second hollow cylindrical structure 2 can be driven to rotate, and the relative positions of the first gear 21 and the second hollow cylindrical structure 2 in the circumferential direction remain unchanged;

[0059] The second gear 22 is an external gear, meshing with the first gear 21;

[0060] The first motor 23 is connected to the second gear 22 and is used to drive the second gear 22 to rotate, thereby driving the first gear 21 to rotate.

[0061] The first groove 2c of the second hollow cylindrical structure 2 may be a strip groove parallel to its axis, or other suitable shapes. The shape of the first protrusion 21a of the first gear 21 matches the shape of the first groove 2c. The first groove 2c matches the first protrusion 21a so that the relative positions of the first gear 21 and the second hollow cylindrical structure 2 in the circumferential direction remain unchanged, but the positions of the two in the axial direction may change.

[0062] The meshing of the second gear 22 and the first gear 21 drives the first gear 21 to rotate, so that the first gear 21 drives the second hollow columnar structure 2 to rotate.

[0063] As can be seen from the above, the driving process of the first driving structure is: the first motor 23 drives the second gear 22 to rotate, the rotation of the second gear 22 drives the first gear 21 to rotate, and the rotation of the first gear 21 drives the second hollow cylindrical structure 2 to rotate, so that the first hollow cylindrical structure 1 and the third hollow cylindrical structure 3 move to realize the contraction of the ultrasonic probe motion mechanism.

[0064] The first driving structure is not only simple in structure and preparation, but also easy to operate.

[0065] Preferably, the first gear 21 is divided into a first part and a second part connected to the first part along its axial direction, the second part is farther away from the second zone e of the second hollow cylindrical structure 2 than the first part, the first part and the second part have the same inner diameter, the first part is located between the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2, the outer wall of the first part is provided with a first limit block 21b, and the tooth pattern is provided on the second part;

[0066] A first limiting groove 1b is provided on the inner wall of the first hollow cylindrical structure 1 near the third region f, and the first limiting groove 1b matches the first limiting block 21b to keep the relative positions of the first hollow cylindrical structure 1 and the first gear 21 unchanged in the axial direction.

[0067] Among them, the first part is located between the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2, and can support the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2, so that the axes of the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2 are kept as parallel as possible to ensure the contraction performance of the ultrasonic probe movement mechanism.

[0068] The first limiting groove 1b matches the first limiting block 21b, so that the relative positions of the first hollow cylindrical structure 1 and the first gear 21 in the axial direction remain unchanged. That is, when the first hollow cylindrical structure 1 moves along its axial direction, the first gear 21 will also move along the axial direction, and the positions of the two in the circumferential direction are not restricted.

[0069] Preferably, the first limiting block 21b is formed by a plurality of round balls, so that the first limiting block 21b can slide in the first limiting groove 1b.

[0070] That is to say, the first limit block 21b is formed by a plurality of round balls, which can ensure smoother relative sliding of the first hollow cylindrical structure 1 and the first gear 21 in the circumferential direction, that is, it plays a lubricating role in the relative movement of the first hollow cylindrical structure 1 and the first gear 21 in the circumferential direction.

[0071] Preferably, the third telescopic assembly further includes: a second driving structure, used to rotate the third hollow columnar structure 3 about its axis.

[0072] That is to say, when the second driving structure drives the third hollow cylindrical structure 3 to rotate, the third hollow cylindrical structure 3 can be moved along the axial direction of the second hollow cylindrical structure 2 to achieve the extension and retraction of the ultrasonic probe movement mechanism.

[0073] The provision of the second driving structure facilitates the extension or contraction operation of the ultrasonic probe movement mechanism.

[0074] It should be noted that the first drive structure and the second drive structure should not be started at the same time as much as possible, that is, when the second drive structure drives the third hollow cylindrical structure 3, the first drive structure does not work, and when the first drive structure drives the second hollow cylindrical structure 2, the second drive structure does not work, so as to avoid mutual influence between the two drive structures.

[0075] Preferably, the outer wall of the third hollow cylindrical structure 3 has a second groove 3b;

[0076] The second driving structure includes:

[0077] The guide member 31 is at least partially disposed between the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2, and is located in the first zone d of the second hollow cylindrical structure 2. The guide member 31 is in the shape of a hollow column, and its outer wall has a third groove 31b, and its inner wall has a second protrusion 31a. The inner diameter of the guide member 31 is transitionally matched with the outer diameter of the first zone d of the second hollow cylindrical structure 2, and the second protrusion 31a matches the second groove 3b, so that when the guide member 31 rotates, the third hollow cylindrical structure 3 can be driven to rotate, wherein the relative positions of the guide member 31 and the third hollow cylindrical structure 3 in the circumferential direction remain unchanged;

[0078] The third gear 32 is an external gear in a hollow column shape, sleeved on the guide member 31, and the inner wall of the third gear 32 has a third protrusion (not shown in the figure), the inner diameter of the third gear 32 and the outer diameter of the guide member 31 are transitionally matched, and the third protrusion matches the third groove 31b, so that when the third gear 32 rotates, it can drive the guide member 31 to rotate, wherein the relative positions of the third gear 32 and the guide member 31 in the circumferential direction remain unchanged;

[0079] The fourth gear 33 is an external gear, meshing with the third gear 32;

[0080] The second motor 34 is connected to the fourth gear 33 and is used to drive the fourth gear 33 to rotate, thereby driving the third gear 32 to rotate.

[0081] The second groove 3b of the third hollow cylindrical structure 3 can be a strip groove parallel to its axis, or other suitable shapes. The shape of the second protrusion 31a of the guide member 31 matches the shape of the second groove 3b. The second groove 3b matches the second protrusion 31a so that the relative positions of the third hollow cylindrical structure 3 and the guide member 31 in the circumferential direction remain unchanged, but the positions of the two in the axial direction can change. The second protrusion 31a can be replaced by a rotating ball disposed on the inner wall of the guide member 31.

[0082] The third groove 31b of the guide member 31 may be a strip groove parallel to the axis thereof, or other suitable shapes. The shape of the third protrusion of the third gear 32 matches the shape of the third groove 31b. The matching of the third groove 31b and the third protrusion makes the relative position of the third gear 32 and the guide member 31 in the circumferential direction unchanged, but the positions of the two in the axial direction can be changed.

[0083] The third gear 32 is driven to rotate by the meshing of the third gear 32 and the fourth gear 33 , so that the third gear 32 drives the guide member 31 to rotate.

[0084] As can be seen from the above, the driving process of the second driving structure is: the second motor 34 drives the fourth gear 33 to rotate, the rotation of the fourth gear 33 drives the third gear 32 to rotate, the rotation of the third gear 32 drives the guide member 31 to rotate, and the rotation of the guide member 31 drives the third hollow cylindrical structure 3 to rotate, so that the third hollow cylindrical structure 3 moves relative to the second hollow cylindrical structure 2 to realize the contraction of the ultrasonic probe motion mechanism.

[0085] The guide member 31 is at least partially disposed between the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2, and can support the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2, so that the axes of the first hollow cylindrical structure 1 and the second hollow cylindrical structure 2 are kept as parallel as possible to ensure the contraction performance of the ultrasonic probe movement mechanism.

[0086] Preferably, a second limiting block 2d is provided on the outer wall of the first area d of the second hollow columnar structure 2;

[0087] The inner wall of the guide member 31 is provided with a second limiting groove 31c, and the second limiting groove 31c matches with the second limiting block 2d, so that the relative positions of the second hollow columnar structure 2 and the guide member 31 in the axial direction remain unchanged.

[0088] The second limiting block 2d of the second hollow cylindrical structure 2 may be a plurality of spherical shapes arranged in the circumferential direction, or may be other suitable shapes. The second limiting groove 31c of the guide member 31 may be a groove for accommodating the second limiting block 2d, so that the relative positions of the second hollow cylindrical structure 2 and the guide member 31 in the axial direction remain unchanged, but the relative positions of the two in the circumferential direction are changed.

[0089] Under the premise that the position restriction of the second hollow columnar structure 2 and the guide member 31 does not affect the ultrasonic probe motion mechanism, the structure of the ultrasonic probe motion mechanism can be made more stable, thereby ensuring the performance of the ultrasonic probe motion mechanism.

[0090] Preferably, a third limiting block 32b is provided on the outer wall of the third gear 32;

[0091] A third limiting groove 1c is provided on the inner wall of the first area d of the first hollow cylindrical structure 1 close to the second hollow cylindrical structure 2, and the third limiting groove 1c matches the third limiting block 32b, so that the relative position of the first hollow cylindrical structure 1 and the third gear 32 in the axial direction remains unchanged.

[0092] That is to say, when the first hollow cylindrical structure 1 moves axially, the third gear 32 will move along with the first hollow cylindrical structure 1 to ensure the structural stability of the ultrasonic probe motion mechanism.

[0093] Preferably, the second limiting block 2d and the third limiting block 32b are respectively formed of a plurality of round beads, so that the second limiting block 2d can slide in the second limiting groove 31c and the third limiting block 32b can slide in the third limiting groove 1c.

[0094] That is to say, the second limit block 2d is formed by a plurality of round balls, which can ensure that the second hollow cylindrical structure 2 and the guide member 31 slide relative to each other more smoothly in the circumferential direction, that is, it plays a lubricating role in the relative movement of the second hollow cylindrical structure 2 and the guide member 31 in the circumferential direction; the third limit block 32b is formed by a plurality of round balls, which can ensure that the first hollow cylindrical structure 1 and the third gear 32 slide relative to each other more smoothly in the circumferential direction, that is, it plays a lubricating role in the relative movement of the first hollow cylindrical structure 1 and the third gear 32 in the circumferential direction, so as to ensure the normal operation of the ultrasonic probe motion mechanism.

[0095] Embodiment 2:

[0096] like Figures 1 to 4 As shown, this embodiment provides an ultrasound probe assembly, including:

[0097] The ultrasonic probe motion mechanism of embodiment 1;

[0098] An ultrasonic probe 41 has one end disposed in the third hollow cylindrical structure 3 .

[0099] That is to say, the third hollow columnar structure 3 is used to install the ultrasonic probe 41 , and the movement of the third hollow columnar structure 3 can drive the ultrasonic probe 41 to move, so as to ensure the operation of the ultrasonic probe 41 .

[0100] Preferably, the ultrasonic probe assembly further includes: a mounting member 42 for fixing the ultrasonic probe 41 to one end of the third hollow cylindrical structure 3 close to the first zone d of the second hollow cylindrical structure 2 .

[0101] That is to say, the mounting member 42 fixedly connects the ultrasonic probe 41 to the third hollow cylindrical structure 3. The mounting member 42 can make it easier to install or remove the ultrasonic probe 41 on the third hollow cylindrical structure 3.

[0102] Preferably, the ultrasonic probe assembly further includes: a fixing member 43 in a hollow cylindrical shape, which is sleeved on the third gear 32 and fixed in relative position with the third gear 32 in the axial direction.

[0103] That is to say, the fixing member 43 can further limit the position between the third gear 32 and the first hollow cylindrical structure 1, so as to make the structure of the ultrasonic probe motion mechanism more stable and further ensure the performance of the ultrasonic probe motion mechanism.

[0104] Preferably, the ultrasonic probe 41 is a B-ultrasound probe, but the ultrasonic probe 41 is not limited to a B-ultrasound probe, and may also be other types of ultrasonic probes.

[0105] In the ultrasonic probe assembly of this embodiment, the extension or contraction of the second hollow columnar structure 2 can be achieved by simply driving it to rotate, which has the advantages of simple structure, easy operation, and convenient assembly and disassembly.

[0106] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0107] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An ultrasonic probe motion mechanism, characterized in that: include: A first telescopic assembly comprises a first hollow cylindrical structure, wherein an inner wall of the first hollow cylindrical structure has a first thread structure; A second telescopic assembly includes a second hollow cylindrical structure, which is inserted into the first hollow cylindrical structure, wherein the outer wall of the second hollow cylindrical structure has a second thread, and the inner wall of the second hollow cylindrical structure has a third thread, and the second thread is adapted to the first thread; A third telescopic assembly, comprising a third hollow cylindrical structure, which is inserted into the second hollow cylindrical structure, wherein the outer wall of the third hollow cylindrical structure has a fourth thread, and the fourth thread is adapted to the third thread; When the second hollow cylindrical structure rotates about its axis, the first hollow cylindrical structure and the third hollow cylindrical structure can move respectively along the axis of the second hollow cylindrical structure and in relatively opposite directions, so as to realize the extension and retraction of the ultrasonic probe movement mechanism.

2. The ultrasonic probe motion mechanism according to claim 1, characterized in that: The second hollow cylindrical structure is divided into a first zone, a second zone and a third zone along its axial direction. The outer diameter of the second zone is larger than the outer diameters of the first zone and the third zone. The second thread is located in the second zone, and the third thread is located in the first zone.

3. The ultrasonic probe motion mechanism according to claim 2, characterized in that: The pitch of the third thread is greater than the pitch of the second thread, so that when the second hollow cylindrical structure rotates, the movement distance of the third hollow cylindrical structure relative to the second hollow cylindrical structure is greater than the movement distance of the first hollow cylindrical structure relative to the second hollow cylindrical structure.

4. The ultrasonic probe motion mechanism according to claim 2, characterized in that: The second telescopic assembly also includes a first driving structure for driving the second hollow cylindrical structure to rotate around its axis.

5. The ultrasonic probe motion mechanism according to claim 4, characterized in that: The outer wall of the third region of the second hollow cylindrical structure has a first groove; The first driving structure comprises: The first gear is an external gear in a hollow cylindrical shape and is sleeved in the third region of the second hollow cylindrical structure. The inner wall of the first gear has a first protrusion. The inner diameter of the first gear is transitionally matched with the outer diameter of the third region of the second hollow cylindrical structure, and the first groove matches the first protrusion, so that when the first gear rotates, the second hollow cylindrical structure can be driven to rotate, and the relative positions of the first gear and the second hollow cylindrical structure in the circumferential direction remain unchanged; A second gear, which is an external gear, meshes with the first gear; The first motor is connected to the second gear and is used to drive the second gear to rotate, thereby driving the first gear to rotate.

6. The ultrasonic probe motion mechanism according to claim 5, characterized in that: The first gear is divided into a first part and a second part connected to the first part along its axial direction, the second part is farther away from the second area of ​​the second hollow cylindrical structure than the first part, the first part and the second part have the same inner diameter, the first part is located between the first hollow cylindrical structure and the second hollow cylindrical structure, the outer wall of the first part is provided with a first limit block, and the tooth pattern is provided on the second part; A first limiting groove is provided on the inner wall of the first hollow cylindrical structure near the third zone, and the first limiting groove matches the first limiting block to keep the relative positions of the first hollow cylindrical structure and the first gear unchanged in the axial direction.

7. The ultrasonic probe motion mechanism according to claim 6, characterized in that: The first limiting block is formed by a plurality of round balls, so that the first limiting block can slide in the first limiting groove.

8. The ultrasonic probe motion mechanism according to claim 2, characterized in that: The third telescopic assembly further comprises: The second driving structure is used to make the third hollow columnar structure rotate around its axis.

9. The ultrasonic probe motion mechanism according to claim 8, characterized in that: The outer wall of the third hollow cylindrical structure has a second groove; The second driving structure comprises: A guide member, at least partially disposed between the first hollow cylindrical structure and the second hollow cylindrical structure, and located in the first region of the second hollow cylindrical structure, the guide member is in the shape of a hollow cylinder, the outer wall of the guide member has a third groove, the inner wall has a second protrusion, the inner diameter of the guide member is transitionally matched with the outer diameter of the first region of the second hollow cylindrical structure, the second protrusion matches the second groove, so that when the guide member rotates, the third hollow cylindrical structure can be driven to rotate, wherein the relative positions of the guide member and the third hollow cylindrical structure in the circumferential direction remain unchanged; The third gear is an external gear in a hollow column shape and is sleeved on the guide member. The inner wall of the third gear has a third protrusion. The inner diameter of the third gear and the outer diameter of the guide member are transitionally matched, and the third protrusion matches the third groove, so that when the third gear rotates, the guide member can be driven to rotate, wherein the relative positions of the third gear and the guide member in the circumferential direction remain unchanged; The fourth gear is an external gear, meshing with the third gear; The second motor is connected to the fourth gear and is used to drive the fourth gear to rotate, thereby driving the third gear to rotate.

10. The ultrasonic probe motion mechanism according to claim 9, characterized in that: A second limiting block is provided on the outer wall of the first area of ​​the second hollow columnar structure; The inner wall of the guide member is provided with a second limiting groove, and the second limiting groove matches the second limiting block, so that the relative positions of the second hollow columnar structure and the guide member in the axial direction remain unchanged.

11. The ultrasonic probe motion mechanism according to claim 10, characterized in that: A third limiting block is provided on the outer wall of the third gear; A third limiting groove is provided on the inner wall of the first area of ​​the first hollow cylindrical structure close to the second hollow cylindrical structure, and the third limiting groove matches the third limiting block, so that the relative positions of the first hollow cylindrical structure and the third gear in the axial direction remain unchanged.

12. The ultrasonic probe motion mechanism according to claim 11, characterized in that: The second limiting block and the third limiting block are respectively formed of a plurality of round beads, so that the second limiting block can slide in the second limiting groove and the third limiting block can slide in the third limiting groove.

13. An ultrasonic probe assembly, characterized in that: include: The ultrasonic probe motion mechanism according to any one of claims 1 to 12; An ultrasonic probe has one end disposed in the third hollow cylindrical structure.

14. The ultrasound probe assembly according to claim 13, characterized in that: The ultrasonic probe motion mechanism is the ultrasonic probe motion mechanism according to any one of claims 2 to 12, and the ultrasonic probe assembly further comprises: The mounting member is used to fix the ultrasonic probe to one end of the third hollow cylindrical structure close to the first area of ​​the second hollow cylindrical structure.

15. The ultrasound probe assembly according to claim 13, characterized in that: The ultrasonic probe motion mechanism is the ultrasonic probe motion mechanism according to any one of claims 9 to 12, and the ultrasonic probe assembly further comprises: The fixing member is in a hollow columnar shape and is sleeved on the third gear and fixed in relative position with the third gear in the axial direction.

16. The ultrasound probe assembly according to claim 13, characterized in that: The ultrasonic probe is a B-ultrasound probe.

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