Needle biopsy mechanism

Abstract

The utility model relates to a needle biopsy mechanism, which relates to the field of prostate needle biopsy, and comprises a biopsy gun guide assembly, a lifting assembly, a linear motion assembly and a rotating assembly, when puncture is carried out, the biopsy gun guiding assembly and a linear probe imaging plane in the ultrasonic probe need to be coplanar so that a needle of the biopsy gun guiding assembly can be completely seen in the plane; the biopsy gun guide assembly is guided by the biopsy gun guide assembly to penetrate into a biopsy position; the lifting assembly is connected with the biopsy gun guiding assembly and used for driving the biopsy gun guiding assembly to be close to or away from the ultrasonic probe in the plane. The linear motion assembly is connected with the lifting assembly and used for driving the biopsy gun guiding assembly to be close to the perineum part so that the biopsy gun guiding assembly can conveniently conduct puncture through a guiding hole of the guiding device. The rotating assembly is connected with the linear motion assembly and used for driving the biopsy gun guiding assembly to do circular motion around the axis of the ultrasonic probe. According to the invention, the prostate lesion point corresponding to the to-be-detected area can be better punctured.

Description

Technical Field

[0001] The present application relates to the field of prostate puncture biopsy, and in particular to a puncture biopsy mechanism. Background Art

[0002] When an abnormality occurs in the prostate, an ultrasound probe needs to be inserted from the target subject's anus into the rectum. The ultrasound probe will rotate in the target subject's rectum to perform an ultrasound scan on the area where the prostate is located to obtain a series of continuous sagittal plane ultrasound images of the prostate, thereby determining the location of the prostate cancer lesion. Tissue sampling of the prostate lesion is then performed through the biopsy gun guide assembly.

[0003] In the related art, a pre-made template is used to guide the biopsy gun guide component to take samples with the help of the puncture target point of the template. However, in this sampling method, the biopsy gun guide component has a low degree of freedom, and the doctor cannot choose the appropriate direction of the biopsy gun guide component to puncture the prostate lesion point corresponding to the area to be tested. Utility Model Content

[0004] The present application aims to at least solve the technical problem that the biopsy gun guide assembly in the prior art has a low degree of freedom and the doctor cannot select the appropriate direction of the biopsy gun guide assembly to puncture the prostate lesion point corresponding to the area to be tested. To this end, the present application proposes a puncture biopsy mechanism.

[0005] The present application provides a puncture biopsy mechanism, comprising:

[0006] A biopsy gun guide assembly, used for installing the biopsy gun guide assembly;

[0007] A lifting assembly, connected to the biopsy gun guide assembly, and used to drive the biopsy gun guide assembly to move closer to or away from the ultrasound probe;

[0008] A linear motion assembly connected to the lifting assembly, used to drive the biopsy gun guide assembly to move toward the lesion puncture when the imaging plane of the ultrasound probe is coplanar with the biopsy gun guide assembly, or to drive the biopsy gun guide assembly to move in the opposite direction of the lesion;

[0009] The rotating assembly is connected to the linear motion assembly and is used to drive the biopsy gun guide assembly to perform circular motion around the axis of the ultrasonic probe.

[0010] By adopting the above technical solution, the biopsy gun guide assembly makes a circular motion around the axis of the ultrasound probe through the rotating assembly, and approaches or moves away from the ultrasound probe through the lifting assembly. That is, the doctor can choose the appropriate direction for the biopsy gun guide assembly to penetrate the patient's perineum, and approaches or moves away from the patient's perineum through the linear motion mechanism, and finally penetrates the biopsy gun into the patient's prostate lesion point through the biopsy gun guide assembly. Compared with directly installing the biopsy gun on the end of the biopsy gun guide assembly, this reduces the deflection of the biopsy gun and can better penetrate the prostate lesion point corresponding to the area to be tested.

[0011] According to one embodiment of the present application, the lifting assembly includes:

[0012] At least two moving blocks moving along the radial direction of the ultrasonic probe are rotatably connected to the biopsy gun guide assembly and are sequentially arranged on the linear motion assembly along the axial direction of the biopsy gun guide assembly. The moving speed of the moving blocks of the lifting assembly gradually increases along the axial direction of the biopsy gun guide assembly, or the moving speeds of the moving blocks of the lifting assembly are equal.

[0013] By adopting the above technical solution, the angle between the biopsy gun guide assembly and the ultrasound probe is adjustable, and the distance between the biopsy gun guide assembly and the ultrasound probe is also adjustable, that is, the biopsy gun guide assembly has the freedom to rotate and the freedom to move toward the ultrasound probe. This design makes it easier for doctors to select the appropriate angle of the biopsy gun guide assembly to pierce the prostate lesion point corresponding to the area to be tested.

[0014] According to one embodiment of the present application, a biopsy gun guide assembly includes:

[0015] The gun body has a guide hole at the end thereof for the biopsy gun guide assembly to pass through; the gun stock has a slot for plugging with the gun body, and the side of the gun stock facing away from the gun body is rotatably connected with the moving block.

[0016] By adopting the above technical solution, the gun body is clamped on the clamping slot of the gun stock, which can make the installation of the gun body and the gun stock faster.

[0017] According to one embodiment of the present application, the buttstock comprises:

[0018] A first support plate, rotatably connected to the corresponding moving block;

[0019] The second support plate is rotatably connected to the corresponding moving block. The second support plate extends away from the moving block to the front of the first support plate and is fixedly connected to the first support plate. The slot is provided on the side of the second support plate away from the first support plate.

[0020] By adopting the above technical solution, the end of the first support plate and the second support plate away from the moving block is closer to the ultrasound probe. When the biopsy gun guide assembly is installed, the gun body of the biopsy gun guide assembly can be made closer to the ultrasound probe. In this way, after the ultrasound probe is inserted into the anus of the target object, the doctor only needs to slightly adjust the relative position of the moving block to make the gun body of the biopsy gun guide assembly correspond to the prostate lesion point.

[0021] According to one embodiment of the present application, the first support plate is connected to the second support plate via a mounting plate.

[0022] By adopting the above technical solution, the mounting plate is clamped between the first support plate and the second support plate, so that the first support plate and the second support plate can be closely fitted together, thereby improving the stability of the first support plate and the second support plate during movement.

[0023] According to one embodiment of the present application, the second support plate has a flange, the first support plate and the second support plate are both provided with threaded holes, and the mounting plate is provided with a through hole. When the flange contacts the side wall surface of the mounting plate, the threaded hole corresponds to the through hole.

[0024] By adopting the above technical solution, the flange is abutted against the side wall of the mounting plate so that the threaded hole corresponds to the through hole, which makes it convenient to use screws to pass through the through hole of the mounting plate and connect with the threaded hole of the first support plate and the threaded hole of the second support plate.

[0025] According to one embodiment of the present application, the mounting plate comprises:

[0026] A first connecting plate, mounted on the first supporting plate;

[0027] The second connecting plate is installed on the second supporting plate and is provided with a sliding groove which is mutually plugged with the first connecting plate.

[0028] By adopting the above technical solution, the second connecting plate is plugged into the first connecting plate through the sliding groove, so that the assembly of the mounting plate can be faster.

[0029] According to one embodiment of the present application, the rotating assembly includes:

[0030] Pedestal;

[0031] At least one arc track is rotatably mounted on the base, each arc track is arranged around the ultrasonic probe, and the center of each arc track is located on the axis of the ultrasonic probe, and the linear motion component is mounted on the arc track.

[0032] According to one embodiment of the present application, the rotating assembly further includes:

[0033] At least one gear set corresponding to the arc track one by one; each of the gear sets includes at least one first gear, the first gear meshes with a rack on the outer ring wall of the corresponding arc track;

[0034] At least one guide wheel group corresponds to the arc track one by one; each of the guide wheel groups includes at least one first guide wheel, and the first guide wheel cooperates with the guide groove of the inner ring wall of the corresponding arc track.

[0035] By adopting the above technical solution, the first gear of the gear set can be driven by the motor to rotate, and the first gear of the gear set is meshed with the rack on the outer ring wall of the corresponding arc track, that is, the arc track can rotate synchronously with the first gear. In this process, the first guide wheel of the guide wheel group cooperates with the guide groove on the inner ring wall of the corresponding arc track. The guide groove has the functions of guiding and limiting, and is used to make the rotation process of the arc track smoother, so as to realize the circular motion of the biopsy gun guide assembly around the axis of the ultrasonic probe.

[0036] According to an embodiment of the present application, the middle portion of each of the arc-shaped tracks is hollowed out, and a placement opening is provided on the arc-shaped track, and the placement opening is connected to the hollowed-out area in the middle portion of the arc-shaped track.

[0037] By adopting the above technical solution, the placement opening is used for inserting the ultrasonic probe and is placed at the center of the arc track.

[0038] In summary, the present application includes at least one of the following beneficial technical effects:

[0039] 1. The biopsy gun guide assembly makes a circular motion around the axis of the ultrasound probe through the rotating assembly, and approaches or moves away from the ultrasound probe through the lifting assembly. That is, the doctor can choose the appropriate direction for the biopsy gun guide assembly to penetrate the patient's perineum, and approaches or moves away from the patient's perineum through the linear motion mechanism, and finally penetrates the biopsy gun into the patient's prostate lesion through the biopsy gun guide assembly. Compared with directly installing the biopsy gun at the end of the biopsy gun guide assembly, this reduces the deflection of the biopsy gun and can better penetrate the prostate lesion corresponding to the area to be tested.

[0040] 2. The angle between the biopsy gun guide assembly and the ultrasound probe is adjustable, and the distance between the biopsy gun guide assembly and the ultrasound probe is also adjustable, that is, the biopsy gun guide assembly has the freedom to rotate and move toward the ultrasound probe. This design makes it easier for doctors to choose the appropriate angle of the biopsy gun guide assembly to pierce the prostate lesion point corresponding to the area to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is one of the structural schematic diagrams of the puncture biopsy mechanism provided in the embodiment of the present application;

[0042] Figure 2 It is one of the structural schematic diagrams of the lifting assembly provided in the embodiment of the present application;

[0043] Figure 3 This is the second structural schematic diagram of the lifting assembly provided in the embodiment of the present application;

[0044] Figure 4 It is a structural schematic diagram of a lifting assembly and a linear motion assembly provided in an embodiment of the present application;

[0045] Figure 5 is a schematic diagram of the structure of a rotating assembly provided in an embodiment of the present application;

[0046] Figure 6 It is a schematic diagram of the structure of the biopsy gun guide assembly provided in an embodiment of the present application.

[0047] Reference numerals:

[0048] 100, biopsy gun guide assembly; 110, gun body; 111, slot; 112, guide hole; 120, gun stock; 121, first support plate; 122, second support plate; 1221, flange; 130, mounting plate; 131, first connecting plate; 132, second connecting plate;

[0049] 200, lifting assembly; 210, moving block; 220, seat body;

[0050] 300, linear motion assembly; 310, mounting seat;

[0051] 400, rotating assembly; 410, base; 420, arc track; 421, guide groove; 422, placement opening; 423, rack; 430, first gear; 440, first guide wheel. DETAILED DESCRIPTION

[0052] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0053] First, in order to facilitate the description of the relative position relationship and setting points of each mechanism in this application, the implementation scenario of the embodiment of this application is explained here.

[0054] When an abnormality occurs in the prostate, a magnetic resonance imaging (MRI) examination of the prostate area will be performed first to obtain a preoperative MRI contour image of the prostate. The doctor will then manually segment the preoperative MRI contour image of the prostate patient and mark the puncture area.

[0055] After that, the doctor inserts the ultrasound probe into the patient's anus and performs an ultrasound scan on the area where the prostate is located to obtain a series of continuous sagittal plane ultrasound images of the prostate. The preoperatively annotated MRI contour image information is registered to the sagittal plane ultrasound image. That is, the image fusion is performed by registering the prostate area manually segmented by the MRI contour image with the prostate area automatically segmented by the sagittal plane ultrasound image.

[0056] Afterwards, the doctor will use the biopsy gun guide assembly 100 to take tissue samples from the prostate lesion points corresponding to the area to be tested based on the area to be tested marked after the image fusion.

[0057] Reference below Figure 1-Figure 6 A puncture biopsy mechanism according to an embodiment of the present application is described.

[0058] like Figure 1 As shown, the puncture biopsy mechanism includes: a biopsy gun guide assembly 100 , a lifting assembly 200 , a linear motion assembly 300 and a rotating assembly 400 .

[0059] The biopsy gun guide assembly 100 is used to install the biopsy gun; the lifting assembly 200 is connected to the biopsy gun guide assembly 100 and is used to drive the biopsy gun guide assembly 100 to move closer to or away from the ultrasound probe.

[0060] The linear motion assembly 300 is connected to the lifting assembly 200, and is used to drive the biopsy gun to puncture the lesion when the imaging plane of the ultrasound probe is coplanar with the biopsy gun, or to drive the biopsy gun to move in the opposite direction of the lesion.

[0061] It should be noted that when puncturing, the imaging plane of the ultrasound probe is coplanar with the biopsy gun, so that the biopsy gun of the biopsy gun guide assembly can be fully seen in the plane, so that the biopsy gun can accurately pierce the prostate lesion. The rotating assembly 400 is connected to the linear motion assembly 300, and is used to drive the biopsy gun guide assembly 100 to perform circular motion around the axis of the ultrasound probe.

[0062] It should be noted that the puncture biopsy mechanism can be connected to other electronic devices when in use. The electronic devices are used to monitor the movement of the biopsy gun guide assembly 100 described below. The electronic devices include but are not limited to computers, mobile phones, and wearable devices.

[0063] The electronic device can input motion control information of the biopsy gun guide assembly 100, such as information about the biopsy gun guide assembly 100 making circular motion around the axis of the ultrasonic probe through the rotating assembly 400, information about the biopsy gun guide assembly 100 approaching or moving away from the ultrasonic probe through the lifting assembly 200, information about the biopsy gun guide assembly 100 performing penetration testing through the linear motion assembly 300, etc.

[0064] Afterwards, the electronic device sends an execution instruction to the puncture biopsy mechanism based on the motion control information instruction of the biopsy gun guide assembly 100 .

[0065] In addition, the electronic device can also obtain a prostate MRI image of the target object, fuse the prostate MRI image with the currently acquired ultrasound image, and control the movement of the biopsy gun guide assembly 100 according to the fused image. Therefore, the biopsy gun guide assembly 100 is required to have a high degree of freedom so that the biopsy gun guide assembly 100 can move to the area to be tested for puncture.

[0066] In this embodiment, the biopsy gun guide assembly 100 makes a circular motion around the axis of the ultrasonic probe through the rotating assembly 400, so that the biopsy gun guide assembly 100 rotates to a position coplanar with the sagittal plane of the ultrasonic probe, so that the movement trajectory of the biopsy gun guide assembly 100 in the area coplanar with the sagittal plane of the ultrasonic probe can be predicted; then the biopsy gun guide assembly 100 is moved closer to or away from the ultrasonic probe through the lifting assembly 200.

[0067] The doctor can choose the appropriate direction for the biopsy gun guide assembly 100 to penetrate the patient's perineum, and move closer to or farther away from the patient's perineum through the linear motion mechanism, and finally penetrate the biopsy gun into the patient's prostate lesion through the biopsy gun guide assembly. Compared with directly installing the biopsy gun on the end of the biopsy gun guide assembly, this can reduce the deflection of the biopsy gun and can better penetrate the prostate lesion corresponding to the area to be tested.

[0068] It should be noted that the puncture biopsy of prostate lesions can be divided into transperineal prostate puncture biopsy and transrectal prostate puncture biopsy. Compared with transrectal prostate puncture biopsy which punctures the rectum and may cause rectal damage and infection, transperineal prostate puncture biopsy which punctures the skin is safer. This application uses transperineal prostate puncture biopsy as an example.

[0069] In the case of transperineal prostate puncture biopsy, doctors tend to choose a biopsy gun guide assembly 100 where the end away from the target object's anus is at a greater distance from the ultrasound probe, while the end of the biopsy gun guide assembly 100 close to the target object's anus is at a smaller distance from the ultrasound probe, in this way, the prostate lesion point corresponding to the area to be tested is punctured, thereby avoiding the human bones and urethra.

[0070] like Figure 2 and Figure 3 As shown, in some embodiments, the lifting assembly 200 includes: at least two moving blocks 210 that move along the radial direction of the ultrasound probe.

[0071] The at least two moving blocks 210 moving along the radial direction of the ultrasonic probe are rotatably connected to the biopsy gun guide assembly 100, and are sequentially arranged on the linear motion assembly 300 along the axial direction of the biopsy gun guide assembly 100. The moving speed of the moving block 210 of the lifting assembly 200 gradually increases along the axial direction of the biopsy gun guide assembly 100, or the moving speed of the moving block 210 of the lifting assembly 200 is equal.

[0072] In this embodiment, according to the difference in the movement speed of the moving block 210, the lifting assembly 200 can be at least one of the following structural forms:

[0073] First, when the moving speed of the moving block 210 of the lifting assembly 200 gradually increases along the axial direction of the biopsy gun guide assembly 100, the biopsy gun guide assembly 100 is not parallel to the ultrasonic probe.

[0074] In this embodiment, the movement speed of the moving block 210 away from the anus of the target object is greater than the movement speed of the moving block 210 close to the anus of the target object, so that the end of the biopsy gun guide assembly 100 away from the anus of the target object is at a greater distance relative to the ultrasound probe, thereby ensuring that the biopsy gun pierces the prostate lesion point corresponding to the area to be tested, avoiding the bones and urethra of the human body.

[0075] Second, when the moving speeds of the moving block 210 of the lifting assembly 200 are equal, the biopsy gun guide assembly 100 is parallel to the ultrasonic probe.

[0076] In this embodiment, the movement speed of the moving block 210 away from the target object's anus is equal to the movement speed of the moving block 210 close to the target object's anus, so that the biopsy gun guide assembly 100 is parallel to the ultrasound probe and approaches or moves away from the ultrasound probe in the radial direction.

[0077] In the above two embodiments, the angle between the biopsy gun guide assembly 100 and the ultrasound probe is adjustable, and the distance between the biopsy gun guide assembly 100 and the ultrasound probe is also adjustable, that is, the biopsy gun guide assembly 100 has the freedom to rotate and the freedom to move toward the ultrasound probe. This design makes it easier for doctors to choose the appropriate angle of the biopsy gun to pierce the prostate lesion point corresponding to the area to be tested.

[0078] like Figure 4 As shown, in actual implementation, the lifting assembly 200 includes: a base 220 , two motors, two synchronous pulleys, two lead screws and two motion blocks 210 .

[0079] Two motors are mounted on the base 220 , and the output shafts of the two motors are connected to the corresponding screw rods through synchronous pulleys. The two screw rods are parallel to each other and threadedly connected to the corresponding motion blocks 210 . Both motion blocks 210 are rotationally connected to the biopsy gun guide assembly 100 .

[0080] The linear motion assembly 300 is connected to the base 220 to drive the biopsy gun of the biopsy gun guiding assembly 100 to pierce the prostate lesion point corresponding to the area to be tested.

[0081] like Figure 1 and Figure 4 As shown, in actual implementation, the linear motion assembly 300 includes: a mounting seat 310, a motor, a synchronous pulley and a screw.

[0082] The mounting seat 310 is mounted on the rotating assembly 400 , the motor is mounted on the mounting seat 310 , and the output shaft of the motor is connected to the screw rod through a synchronous pulley, and the screw rod is threadedly connected to the seat body 220 .

[0083] like Figure 5 As shown, exemplarily, the rotating assembly 400 includes: a base 410 and at least one arc-shaped track 420 .

[0084] The arc track 420 is rotatably mounted on the base 410 . Each arc track 420 is disposed around the ultrasonic probe, and the center of each arc track 420 is located on the axis of the ultrasonic probe. The linear motion assembly 300 is mounted on the arc track 420 .

[0085] The outer wall surface of each arc track 420 is paved with a rack 423 , and the inner wall surface of each arc track 420 is provided with a guide groove 421 .

[0086] The rotating assembly 400 further includes: at least one gear set and at least one guide wheel set.

[0087] The mounting base 310 of the linear motion assembly 300 is installed on the arc track 420, each arc track 420 is arranged around the ultrasonic probe, and the center of each arc track 420 is located on the axis of the ultrasonic probe; the outer ring wall of each arc track 420 is paved with a rack 423, and the inner ring wall of each arc track 420 is opened with a guide groove 421.

[0088] The gear sets correspond to the arc tracks 420 one by one, and each gear set includes at least one first gear 430 , which meshes with a rack 423 on the outer ring wall of the corresponding arc track 420 .

[0089] The guide wheel groups correspond to the arc tracks 420 one by one; each guide wheel group includes at least one first guide wheel 440 , and the first guide wheel 440 cooperates with the guide groove 421 of the inner ring wall of the corresponding arc track 420 .

[0090] In this embodiment, the first gear 430 of the gear set can be driven to rotate by a motor, and the first gear 430 of the gear set is meshed with the rack 423 on the outer ring wall of the corresponding arc track 420, that is, the arc track 420 can rotate synchronously with the first gear 430. In this process, the first guide wheel 440 of the guide wheel group cooperates with the guide groove 421 on the inner ring wall of the corresponding arc track 420. The guide groove 421 has the functions of guiding and limiting, and is used to make the rotation process of the arc track 420 smoother, so as to realize the circular motion of the biopsy gun guide assembly 100 around the axis of the ultrasonic probe.

[0091] like Figure 5 As shown, in actual implementation, the outer ring wall surface of the arc track 420 is also provided with guide grooves 421 , and the guide grooves 421 are located on both sides of the rack 423 of the outer ring wall surface of the arc track 420 .

[0092] The outer shell of the guide wheel group is installed on the base 410 of the first linear motion assembly 300 , and the first guide wheel 440 of the guide wheel group cooperates with the guide groove 421 of the corresponding arc track 420 .

[0093] like Figure 5 As shown, in actual implementation, the number of the arc-shaped tracks 420 is two, and the mounting seat 310 of the linear motion component 300 is mounted on the arc-shaped track 420 of the rotating component 400 .

[0094] like Figure 5 As shown, there are two arc tracks 420 of the rotating component 400, and the mounting seat 310 of the linear motion component 300 is installed on the arc track 420 of the rotating component 400. The middle part of each arc track 420 is hollowed out and connected to the placement opening 422 opened on the arc track 420, which is used to place the ultrasound probe.

[0095] like Figure 5 As shown, in actual implementation, the middle of each arc track 420 is hollowed out, and a placement opening 422 is opened on the arc track 420. The placement opening 422 is connected to the hollow area in the middle of the arc track 420. The placement opening 422 is used for inserting an ultrasonic probe and is placed at the center of the arc track 420.

[0096] like Figure 6 As shown, in some embodiments, the biopsy gun guide assembly 100 includes a gun body 110 and a gun stock 120 .

[0097] A guide hole 112 is formed at the end of the gun body 110 for the biopsy gun guide assembly to pass through.

[0098] The buttstock 120 is provided with an inserting slot 111 , and a side of the buttstock 120 facing away from the gun body 110 is rotatably connected to the moving block 210 .

[0099] In this embodiment, the gun body 110 is clamped in the clamping slot 111 of the gun stock 120 , so that the gun body 110 and the gun stock 120 can be installed more quickly.

[0100] like Figure 6 As shown, in some embodiments, the buttstock 120 includes a first butt plate 121 and a second butt plate 122 .

[0101] The first support plate 121 is rotatably connected to the corresponding moving block 210 via a bearing.

[0102] The second support plate 122 is rotatably connected to the corresponding moving block 210 via a bearing. The second support plate 122 extends away from the moving block 210 to the front of the first support plate 121 and is fixedly connected to the first support plate 121. A slot 111 is provided on one side of the second support plate 122 away from the first support plate 121.

[0103] In this embodiment, the end of the first support plate 121 and the second support plate 122 away from the motion block 210 is closer to the ultrasound probe. When the biopsy gun guide assembly 100 is installed, the gun body 110 of the biopsy gun guide assembly 100 can be made closer to the ultrasound probe. In this way, after the ultrasound probe is inserted into the anus of the target object, the doctor only needs to slightly adjust the relative position of the motion block 210 to make the gun body 110 of the biopsy gun guide assembly 100 correspond to the prostate lesion point.

[0104] like Figure 6 As shown, in some embodiments, the first support plate 121 is connected to the second support plate 122 via a mounting plate 130 .

[0105] In this embodiment, the mounting plate 130 is sandwiched between the first support plate 121 and the second support plate 122 , so that the first support plate 121 and the second support plate 122 can be closely fitted together, thereby improving the stability of the first support plate 121 and the second support plate 122 during movement.

[0106] like Figure 6 As shown, in some embodiments, the second support plate 122 has a flange 1221, the first support plate 121 and the second support plate 122 are both provided with threaded holes, and the mounting plate 130 is provided with a through hole. When the flange 1221 conflicts with the side wall of the mounting plate 130, the threaded hole corresponds to the through hole.

[0107] In this embodiment, the flange 1221 is abutted against the side wall of the mounting plate 130 so that the threaded hole corresponds to the through hole, which makes it convenient to use screws to pass through the through hole of the mounting plate 130 and connect with the threaded hole of the first support plate 121 and the threaded hole of the second support plate 122.

[0108] like Figure 6 As shown, in some embodiments, the mounting plate 130 includes: a first connecting plate 131 and a second connecting plate 132 .

[0109] The first connecting plate 131 is installed on the first supporting plate 121;

[0110] The second connecting plate 132 is mounted on the second supporting plate 122 and defines a sliding groove that is plugged into the first connecting plate 131 .

[0111] In this embodiment, the second connecting plate 132 is plugged into the first connecting plate 131 through the sliding groove, so that the assembly of the mounting plate 130 can be faster.

[0112] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A puncture biopsy mechanism, characterized in that: include: A biopsy gun guide assembly (100), used for installing a biopsy gun guide assembly; A lifting assembly (200) connected to the biopsy gun guide assembly (100) and used to drive the biopsy gun guide assembly (100) to move closer to or away from the ultrasound probe; A linear motion assembly (300) connected to the lifting assembly (200) is used to drive the biopsy gun guide assembly to move toward the lesion puncture when the imaging plane of the ultrasound probe is coplanar with the biopsy gun guide assembly, or to drive the biopsy gun guide assembly to move in the opposite direction of the lesion; The rotating assembly (400) is connected to the linear motion assembly (300) and is used to drive the biopsy gun guide assembly (100) to perform circular motion around the axis of the ultrasonic probe.

2. The puncture biopsy mechanism according to claim 1, characterized in that: The lifting assembly (200) comprises: At least two moving blocks (210) moving along the radial direction of the ultrasonic probe are rotatably connected to the biopsy gun guide assembly (100), and are sequentially arranged on the linear motion assembly (300) along the axial direction of the biopsy gun guide assembly (100); the moving speed of the moving blocks (210) of the lifting assembly (200) gradually increases along the axial direction of the biopsy gun guide assembly (100), or the moving speeds of the moving blocks (210) of the lifting assembly (200) are equal.

3. The puncture biopsy mechanism according to claim 1, characterized in that: The rotating assembly (400) comprises: Base (410); At least one arc track (420) is rotatably mounted on the base (410), each arc track (420) is arranged around the ultrasonic probe, and the center of each arc track (420) is located on the axis of the ultrasonic probe, and the linear motion assembly (300) is mounted on the arc track (420).

4. The puncture biopsy mechanism according to claim 3, characterized in that: The outer ring wall surface of each arc-shaped track (420) is paved with a rack (423), and the inner ring wall surface of each arc-shaped track (420) is provided with a guide groove (421); The rotating assembly (400) further comprises: at least one gear set corresponding to the arc track (420); each of the gear sets comprises at least one first gear (430), the first gear (430) meshing with a rack (423) on the outer ring wall surface of the corresponding arc track (420); At least one guide wheel group corresponds to the arc track (420) one by one; each of the guide wheel groups includes at least one first guide wheel (440), and the first guide wheel (440) cooperates with the guide groove (421) of the inner ring wall surface of the corresponding arc track (420).

5. The puncture biopsy mechanism according to claim 3, characterized in that: The middle portion of each arc-shaped track (420) is hollowed out, and a placement opening (422) is provided on the arc-shaped track (420), and the placement opening (422) is connected to the hollowed-out area in the middle portion of the arc-shaped track (420).

6. The puncture biopsy mechanism according to claim 2, characterized in that: The biopsy gun guide assembly (100) comprises: A gun body (110), wherein an end of the gun body (110) is provided with a guide hole (112) for the biopsy gun guide assembly to pass through; The gun stock (120) is provided with a slot (111) for plugging with the gun body (110), and a side of the gun stock (120) facing away from the gun body (110) is rotatably connected to the moving block (210).

7. The puncture biopsy mechanism according to claim 6, characterized in that: The gun stock (120) comprises: A first support plate (121) is rotatably connected to the corresponding moving block (210); The second support plate (122) is rotatably connected to the corresponding moving block (210); the second support plate (122) is away from the moving block (210) and extends to the front of the first support plate (121), and is fixedly connected to the first support plate (121); the card slot (111) is provided on a side of the second support plate (122) away from the first support plate (121).

8. The puncture biopsy mechanism according to claim 7, characterized in that: The first support plate (121) is connected to the second support plate (122) via a mounting plate (130).

9. The puncture biopsy mechanism according to claim 8, characterized in that: The second support plate (122) has a flange (1221), the first support plate (121) and the second support plate (122) are both provided with threaded holes, and the mounting plate (130) is provided with a through hole, and when the flange (1221) contacts the side wall surface of the mounting plate (130), the threaded hole corresponds to the through hole.

10. The puncture biopsy mechanism according to claim 8, characterized in that: The mounting plate (130) comprises: A first connecting plate (131), mounted on the first supporting plate (121); The second connecting plate (132) is mounted on the second supporting plate (122) and is provided with a sliding groove for interlocking with the first connecting plate (131).

Images