B ultrasonic machine probe stepper for prostate puncture

Abstract

The utility model discloses a B ultrasonic machine probe stepper for prostate puncture, which is characterized in that a B ultrasonic machine probe is arranged on a push rod sliding block, a linear guide piece is fixedly connected with the push rod sliding block, the linear guide piece is arranged on a push rod fixing seat, and an adjusting gear set is arranged on the push rod fixing seat; an adjusting rack is arranged on the linear guide piece; the adjusting gear set comprises an adjusting gear and an adjusting hand wheel, the adjusting hand wheel is provided with a grooved wheel structure and a clutch structure, the grooved wheel structure comprises a grooved wheel and a ball structure, the adjusting hand wheel can be locked or loosened with the grooved wheel structure through the clutch structure, and the adjusting hand wheel drives the grooved wheel to rotate synchronously during locking. The rotation angle corresponding to two adjacent times of wave bead mechanical positioning is a first interval angle, and the displacement amount of the B ultrasonic machine probe corresponding to the first interval angle is 5 mm; during loosening, an operator can freely rotate the adjusting hand wheel and drive the probe of the B ultrasonic machine to move back and forth without feeling any hand feeling of mechanical positioning of the wave bead; an operator can conveniently and easily adjust the B-ultrasonic machine probe to any section position.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially a B ultrasonic machine probe stepper for prostate puncture. BACKGROUND

[0002] At present, prostate puncture is usually carried out under the guidance of magnetic resonance or ultrasound. Under the guidance of ultrasound, the ultrasound probe is inserted into the rectum from the anus of the target object, the ultrasound probe rotates in the rectum of the target object, the ultrasound scanning is carried out on the area where the prostate is located, a series of continuous sagittal plane ultrasound images of the prostate are obtained, the position of the prostate cancer lesion point is determined, and then the puncture needle is positioned and assisted by an auxiliary support. Usually, a perineal prostate puncture support provided in patent CN206007334U is used for puncture assistance through a puncture box and a puncture passage pipe thereon, and the height of the puncture needle can be adjusted through an adjuster. However, the vertical height of the puncture needle can be adjusted only, the freedom degree of adjustment of the puncture needle is poor, and the flexibility is poor.

[0003] In the prior art, patent application No. CN2024106269744 discloses an adjustable stepper for local treatment of prostate cancer, which comprises an adjusting seat and a puncture template. The adjusting seat is used for adjusting the height and front and rear positions of the puncture template. The puncture template comprises an outer frame, an adjusting template, and an adjusting device. The outer frame is provided as a hollow structure, the adjusting template is provided as a plurality of templates and is arranged in the hollow structure of the outer frame, one end of the adjusting template is rotationally connected to the inner wall of one side of the outer frame, the other end of the adjusting template passes through the outer frame and is connected to the adjusting device, and the angle position of the adjusting template is changed through the adjusting device. The adjusting template further comprises a limiting device arranged near the adjusting device and used for fixing the position of the adjusted adjusting template. In the above technical solution, the operator needs to carefully observe the scale change when adjusting the ultrasound probe to ensure that the distance between adjacent two B-ultrasound image sections is a fixed value. The operator cannot easily adjust and control the distance between adjacent two B-ultrasound image sections, which increases the operation difficulty and the risk of misoperation. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a B ultrasonic machine probe stepper for prostate puncture to solve the technical defects and the technical requirements that cannot be met.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0006] A B ultrasonic machine probe stepper for prostate puncture comprises a push rod fixing seat, a push rod sliding block, and a linear guide. The push rod sliding block is used for installing a B ultrasonic machine probe. The linear guide is fixedly connected with the push rod sliding block. The linear guide is arranged on the push rod fixing seat and can slide forward and backward. An adjusting gear set for adjusting the position of the linear guide is arranged on the push rod fixing seat.

[0007] The linear guide is provided with an adjusting rack, and the linear guide is an adjusting guide column or a guide rail. The adjusting gear set comprises an adjusting gear engaged with the adjusting rack and an adjusting hand wheel for driving the adjusting gear to rotate. When the adjusting hand wheel rotates, the adjusting rack is driven to move forward and backward, thereby driving the push rod slider and the B-ultrasound machine probe to move forward and backward.

[0008] The adjusting hand wheel is provided with a groove wheel structure and a clutch structure. The groove wheel structure comprises a groove wheel and a wave bead structure. When the groove wheel rotates to a certain angle, the wave bead structure is clamped into the groove or hole of the groove wheel, realizing wave bead mechanical positioning. When the adjusting hand wheel is locked through the clutch structure and the groove wheel structure, the adjusting hand wheel will drive the groove wheel to rotate synchronously, and the B-ultrasound machine probe enters the stepping mode. When the operator rotates the adjusting hand wheel by a certain angle, the operator will feel the wave bead mechanical positioning feeling. When the adjusting hand wheel is unlocked through the clutch structure and the groove wheel structure, the operator can freely rotate the adjusting hand wheel and drive the B-ultrasound machine probe to move forward and backward, and the operator cannot feel the wave bead mechanical positioning feeling.

[0009] As a preferred, when the operator rotates the adjusting hand wheel, the rotation angle corresponding to the adjacent two times of wave bead mechanical positioning is a first interval angle, and the displacement of the B-ultrasound machine probe corresponding to the first interval angle is 5mm.

[0010] As a preferred, the groove wheel structure further comprises a pressure plate, the pressure plate is fixed on the side of the push rod fixed seat, the wave bead structure comprises at least one group of wave beads and springs, the groove wheel is sleeved on the pressure plate, and the groove wheel and the pressure plate can rotate relative to each other. A plurality of groups of grooves are uniformly arranged on the inner side surface of the groove wheel, at least one wave bead structure is arranged on the outer side surface of the pressure plate, the spring gives the wave bead an elastic force for moving outward, when the groove on the groove wheel is aligned with the wave bead structure, the wave bead is clamped into the groove of the groove wheel, and the included angle corresponding to the adjacent two grooves is a first interval angle.

[0011] As a preferred, the adjusting hand wheel and the adjusting gear are coaxially connected through a connecting column, the connecting column passes through the center through hole of the pressure plate, one end of the connecting column is fixedly connected with the adjusting gear, and the other end of the connecting column is locked with the adjusting hand wheel.

[0012] As a preferred, the adjusting hand wheel is provided with a first locking screw, and rotating out or rotating in the first locking screw can make the locking screw away from or abut against the side of the pressure plate, so as to unlock or lock the adjusting hand wheel, thereby avoiding the rotation of the adjusting hand wheel caused by accidental touch.

[0013] As a preferred, the groove wheel is provided with a scale ring, the scale ring is uniformly marked with scales, the scale ring can rotate relative to the groove wheel around the shaft, and the scale ring and the groove wheel are in damping cooperation. Under the condition that no external force is applied, the scale ring can rotate together with the groove wheel. Or the scale ring and the groove wheel are locked through a locking mechanism, so that the scale ring can rotate together with the groove wheel.

[0014] As preferred, the push rod fixing base is provided with a reference scale, and as the scale ring rotates with the groove wheel, the reference scale is aligned with different scale values on the scale ring in sequence, so that the operator can locate the current position of the ultrasound machine probe.

[0015] As preferred, the clutch structure is a second locking screw, which passes through the adjusting hand wheel, and when the second locking screw is screwed in, the second locking screw abuts against the side of the groove wheel, the adjusting hand wheel and the groove wheel are locked, and the adjusting hand wheel and the groove wheel rotate synchronously, and the adjusting hand wheel and the groove wheel are mechanically positioned when they rotate by a certain angle, and when the second locking screw is screwed out, the second locking screw is away from the side of the groove wheel, and when the adjusting hand wheel is rotated, the groove wheel is not rotated, and therefore the mechanical positioning of the wave beads cannot be felt.

[0016] As preferred, a roll angle adjusting mechanism for adjusting the rotation of the ultrasound machine probe around its own axis is arranged between the push rod sliding block and the ultrasound machine probe; the roll angle adjusting mechanism comprises a roll seat arranged on the push rod sliding block, a roll gear ring arranged on the roll seat, a roll gear arranged on the push rod sliding block, and a roll adjusting knob for adjusting the rotation of the roll gear; the ultrasound machine probe is arranged on the roll seat, the roll seat rotates around the axis of the ultrasound machine probe and is arranged on the push rod sliding block, the roll gear and the roll gear ring are meshed with each other, and the roll adjusting knob directly or indirectly drives the rotation of the roll gear, so that the roll seat is driven to rotate through the roll gear ring, and the ultrasound machine probe rotates around its own axis.

[0017] As preferred, a second push rod mechanism for pushing the puncture guide template forward or backward is arranged on the push rod fixing base, and the puncture guide template is an array template, and a plurality of puncture guide holes are arranged in a rectangular array on the puncture guide template.

[0018] The second push rod mechanism comprises an adjusting push rod movably arranged on the push rod fixing base, the adjusting push rod can move axially relative to the push rod fixing base, the push rod fixing base is provided with an adjusting positioning member for positioning the adjusting push rod, the front end of the adjusting push rod is provided with an adjusting support assembly, and the puncture guide template is arranged on the adjusting support assembly.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] When the adjusting handwheel of the present application is released through the clutch structure and the groove wheel structure, the operator can freely rotate the adjusting handwheel and drive the B-ultrasound probe to move forward and backward. At this time, the B-ultrasound probe can be aimed at the deepest part of the prostate, thereby realizing the initial positioning of the B-ultrasound probe; then when the adjusting handwheel is locked with the groove wheel structure through the clutch structure, the adjusting handwheel will drive the groove wheel to rotate synchronously, and the B-ultrasound probe enters the stepping mode. The stepping can be controlled every 5mm by hand feeling, thereby realizing the precise interval positioning of the B-ultrasound probe, making it easy for the operator to adjust the B-ultrasound probe to any cross-sectional position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural diagrams of the embodiment of the utility model;

[0022] Figure 2 This is the second structural diagram of the embodiment of the utility model;

[0023] Figure 3 This is one of the structural diagrams of an embodiment of the utility model without the B-ultrasound machine probe;

[0024] Figure 4 This is the second structural diagram of the embodiment of the utility model without the B-ultrasound machine probe;

[0025] Figure 5 This is a schematic diagram of the assembly structure of the push rod mechanism and the roll angle adjustment mechanism of an embodiment of the utility model;

[0026] Figure 6 This is one of the internal cross-sectional views of the adjusting hand wheel according to an embodiment of the present utility model;

[0027] Figure 7 This is the second internal cross-sectional view of the adjustment hand wheel according to the embodiment of the present utility model;

[0028] Figure 8 This is a schematic structural diagram of a sheave according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figures 1-8 As shown, a B-ultrasound machine probe stepper for prostate puncture is used. This embodiment is mainly used for puncture of prostate patients to facilitate operation on prostate patients.

[0031] Specifically, a B-ultrasonic machine probe stepper for prostate puncture comprises a push rod fixed seat 10331, a push rod sliding block 10332, and a linear guide, the push rod sliding block 10332 is used for mounting a B-ultrasonic machine probe 105, the linear guide is fixedly connected with the push rod sliding block 10332, the linear guide is arranged on the push rod fixed seat 10331 and slides forward and backward, and the push rod fixed seat 10331 is provided with an adjusting gear set used for adjusting the position of the linear guide.

[0032] As shown in Figures 1-4 The linear guide is provided with an adjusting rack 10335, and the linear guide is an adjusting guide column or a guide rail; in this embodiment, the linear guide is an adjusting guide column 10333, the front-rear direction is the axial direction of the adjusting guide column 10333, the adjusting guide column 10333 has two, the two adjusting guide columns 10333 are arranged in parallel and the front ends thereof are fixed on the push rod sliding block 10332 at the same time, and the rear ends of the two adjusting guide columns 10333 are connected through a guide column connecting plate 10334; the adjusting guide column 10333 is arranged on the push rod fixed seat 10331 and can slide on the push rod fixed seat 10331 along the axial direction thereof, a through hole can be formed on the push rod fixed seat 10331, the adjusting guide column 10333 is inserted into the through hole, the push rod fixed seat 10331 is provided with an adjusting gear set used for adjusting the position of the adjusting guide column 10333, and the adjusting rack 10335 is arranged on the adjusting guide column 10333, the adjusting gear set cooperates with the adjusting rack 10335, the adjusting rack 10335 can be formed on the adjusting guide column 10333 directly or be fixed on the adjusting guide column 10333 through a screw or the like.

[0033] The adjusting gear set comprises an adjusting gear 10336 engaged with the adjusting rack 10335 and an adjusting hand wheel 10337 used for driving the adjusting gear 10336 to rotate, when the adjusting hand wheel 10337 rotates, the adjusting gear 10336 drives the adjusting rack 10335 to move linearly forward and backward, thereby driving the push rod sliding block 10332 and the B-ultrasonic machine probe 105 to move forward and backward.

[0034] The B-ultrasonic machine probe 105 is arranged on the push rod sliding block 10332, the adjusting guide column 10333 can drive the push rod sliding block 10332 and the B-ultrasonic machine probe 105 to approach or move away from the biological tissue, specifically, the B-ultrasonic machine probe 105 is inserted into the anus of the biological tissue and is used for acquiring a B-ultrasonic image of the prostate part, and the puncture needle is guided to puncture into the prostate through the perineum through the puncture guide template 3.

[0035] As shown in Figures 6-8As shown, the adjusting hand wheel 10337 is provided with a groove wheel structure 103371 and a clutch structure 103372, the groove wheel structure includes a groove wheel 10337101 and a wave bead structure, when the groove wheel 10337101 rotates to a certain angle, the wave bead structure will be clamped into the groove or hole of the groove wheel 10337101, and a "click" sound will be emitted to realize wave bead mechanical positioning, when the adjusting hand wheel 10337 is locked through the clutch structure and the groove wheel structure, the adjusting hand wheel 10337 will drive the groove wheel 10337101 to rotate synchronously, the B-ultrasound machine probe 105 enters the stepping mode, when the operator rotates the adjusting hand wheel 10337 by a certain angle, the operator will feel the feeling of wave bead mechanical positioning, when the adjusting hand wheel 10337 is unlocked through the clutch structure and the groove wheel structure, the operator can freely rotate the adjusting hand wheel 10337 and drive the B-ultrasound machine probe 105 to move forward and backward, and the operator will not feel any feeling of wave bead mechanical positioning.

[0036] When the operator rotates the adjusting hand wheel 10337, the rotation angle corresponding to the adjacent two wave bead mechanical positioning is a first interval angle, and the displacement amount of the B-ultrasound machine probe 105 corresponding to the first interval angle is 5mm, so that the operator can drive the B-ultrasound machine probe 105 according to the feeling of equal distance, so as to realize equal distance distribution of adjacent two B-ultrasound image sections, and the distance is 5mm.

[0037] The groove wheel structure further includes a pressure plate 10337201, the pressure plate 10337201 is fixed on the side of the push rod fixed seat 10331, the wave bead structure includes at least one group of wave beads 10337102 and springs 10337103, the groove wheel 10337101 is sleeved on the pressure plate 10337201, and the groove wheel 10337101 and the pressure plate 10337201 can rotate relatively, a plurality of groups of grooves 103371011 are uniformly arranged on the inner side circumferential surface of the groove wheel 10337101, at least one wave bead structure is arranged on the outer side surface of the pressure plate 10337201, a spring groove is arranged on the pressure plate 10337201, the spring 10337103 is arranged between the spring groove and the wave bead 10337102, the spring 10337103 gives the wave bead 10337102 an elastic force to move outward, when the groove on the groove wheel 10337101 is aligned with the wave bead 10337102 structure, the wave bead 10337102 will be clamped into the groove 103371011 of the groove wheel 10337101, and the included angle of the adjacent two grooves 103371011 is a first interval angle.

[0038] Further, the adjusting hand wheel 10337 is coaxially connected with the adjusting gear 10336 through a connecting column 1033601, the connecting column 1033601 passes through the center through hole of the pressure plate 10337201, one end of the connecting column 1033601 is fixedly connected with the adjusting gear 10336, and the other end of the connecting column 1033601 is lockingly connected with the adjusting hand wheel 10337.

[0039] Further, the adjusting hand wheel 10337 is coaxially connected with the adjusting gear 10336 through a connecting column 1033601, the connecting column 1033601 passes through the center through hole of the pressure plate 10337201, one end of the connecting column 1033601 is fixedly connected with the adjusting gear 10336, and the other end of the connecting column 1033601 is lockingly connected with the adjusting hand wheel 10337.

[0040] Further, the adjusting hand wheel 10337 is coaxially connected with the adjusting gear 10336 through a connecting column 1033601, the connecting column 1033601 passes through the center through hole of the pressure plate 10337201, one end of the connecting column 1033601 is fixedly connected with the adjusting gear 10336, and the other end of the connecting column 1033601 is lockingly connected with the adjusting hand wheel 10337.

[0041] Further, the adjusting hand wheel 10337 is coaxially connected with the adjusting gear 10336 through a connecting column 1033601, the connecting column 1033601 passes through the center through hole of the pressure plate 10337201, one end of the connecting column 1033601 is fixedly connected with the adjusting gear 10336, and the other end of the connecting column 1033601 is lockingly connected with the adjusting hand wheel 10337.

[0042] Further, the push rod fixing seat 10331 is provided with a reference scale (not shown in the figure), and as the scale ring rotates with the groove wheel 10337 101, the reference scale is sequentially aligned with different scale values on the scale ring, so that the operator can locate the current position of the B-ultrasound machine probe 105. When the B-ultrasound machine probe 105 is aligned with the deepest part of the prostate, rotate the scale ring to align the zero scale with the reference scale, and then adjust the B-ultrasound machine probe 105 into the stepping mode. After that, as the scale ring rotates with the groove wheel 10337 101, the reference scale is sequentially aligned with different scale values on the scale ring, so that the operator can master the current cross-sectional position of the B-ultrasound machine probe 105.

[0043] As shown in Figures 1-4 , the push rod fixing seat 10331 is provided with a second push rod mechanism for pushing the puncture guide template 3 forward or backward. The puncture guide template 3 is an array template, and a plurality of puncture guide holes 301 are arranged in a rectangular array on the puncture guide template 3.

[0044] The second push rod mechanism includes an adjusting push rod 10338 movably arranged on the push rod fixing seat 10331. The adjusting push rod 10338 is provided with two adjusting push rods 10338, which can move axially relative to the push rod fixing seat 10331. The push rod fixing seat 10331 is provided with an adjusting positioning member 1033801 for positioning the adjusting push rod 10338. The adjusting positioning member 1033801 of the embodiment is a hand screw (as shown in Figure 2 The front end of the adjusting push rod 10338 is provided with an adjusting support assembly 104, and the other end of the two adjusting push rods 10338 is provided with a push rod connecting plate 10339. The push rod handle 103310 is arranged on the push rod connecting plate 10339. The puncture guide template 3 is arranged on the adjusting support assembly, and the adjusting push rod 10338 is pushed by the push rod handle 103310 to adjust the puncture guide template 3 to approach or move away from the biological tissue. In the embodiment, the adjusting support assembly includes an adjusting block 1041 and an adjusting rod 1042 adjustably arranged on the adjusting block. The adjusting rod is provided with at least two groups, and each group of adjusting rods passes through the adjusting block respectively and can be pressed or loosened with the adjusting block by adjusting the bolt 1043, so as to adjust the position of the puncture guide template 3 relative to the adjusting block, thereby adjusting the height of the puncture guide template 3. The puncture guide template 3 is arranged on the two groups of adjusting rods, and the B-ultrasound machine probe 105 passes through between the two groups of adjusting rods.

[0045] As shown in Figures 3-5As shown, the above-mentioned motion of the B-ultrasound machine probe 105 and the motion of the adjusting support assembly 104 do not interfere with each other, and can be adjusted independently; further, in order to enable the B-ultrasound machine probe 105 to realize a complete sectional detection, it is necessary to rotate the B-ultrasound machine probe 105 around its own axis, and a roll angle adjusting mechanism 1034 for adjusting the rotation of the B-ultrasound machine probe 105 around its own axis is arranged between the push rod slider 10332 and the B-ultrasound machine probe 105.

[0046] The roll angle adjusting mechanism 1034 comprises a roll seat 10341 arranged on the push rod slider 10332, a roll gear ring 10342 arranged on the roll seat 10341, a roll gear 10343 arranged on the push rod slider 10332, and a roll adjusting knob 10344 for adjusting the rotation of the roll gear 10343; the B-ultrasound machine probe 105 is arranged on the roll seat 10341, the roll seat 10341 is arranged on the push rod slider 10332 to rotate around the axis of the B-ultrasound machine probe 105, the roll gear 10343 is engaged with the roll gear ring 10342, the roll adjusting knob 10344 directly or indirectly drives the roll gear 10343 to rotate, thereby driving the roll seat 10341 to rotate through the roll gear ring 10342, so that the B-ultrasound machine probe 105 rotates around its own axis.

[0047] Further, as shown in the figure, Figure 1 The roll seat 10341 is detachably provided with a pressing plate 1034101, which can be fixed on the roll seat 10341 by buckling locking or bolt locking, and the pressing plate 1034101 can press the B-ultrasound machine probe 105 tightly on the roll seat 10341 to prevent the B-ultrasound machine probe 105 from moving position when moving forward and backward or rotating, and ensure the stability of the B-ultrasound machine probe 105 during work.

[0048] The push rod slider 10332 comprises a rotation limiting block 10345, an arc-shaped limiting groove is arranged in the rotation limiting block 10345, an arc-shaped protrusion 10347 is arranged on the roll seat 10341, the arc-shaped protrusion 10347 slides in the arc-shaped limiting groove, the roll adjusting knob 10344 is rotated to rotate the roll gear 10343, the roll gear 10343 drives the roll gear ring 10342 to move, the roll gear ring 10342 is also arc-shaped, the roll seat 10341 rotates with the roll gear ring 10342, thereby realizing the rotation of the B-ultrasound machine probe 105; the roll adjusting knob 10344 is arranged on the guide column connecting plate 10334, a roll connecting rod 10346 is arranged between the roll adjusting knob 10344 and the roll gear 10343, the roll connecting rod 10346 is used to transmit the force of the roll adjusting knob 10344 to the roll gear 10343, thereby realizing the adjustment of the roll seat 10341.

[0049] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0050] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A B-ultrasound probe stepper for prostate puncture, characterized in that: The push rod fixed seat, the push rod sliding block and the linear guide are included, the push rod sliding block is used for installing the B-ultrasonic machine probe, the linear guide is fixedly connected with the push rod sliding block, the linear guide is arranged on the push rod fixed seat and slides forward and backward, and the push rod fixed seat is provided with an adjusting gear set for adjusting the position of the linear guide; The adjusting rack is arranged on the linear guide, the linear guide is an adjusting guide column or a guide rail, the adjusting gear set includes an adjusting gear engaged with the adjusting rack and an adjusting hand wheel for driving the adjusting gear to rotate, when the adjusting hand wheel rotates, the adjusting rack is driven to move forward and backward, thereby driving the push rod sliding block and the B-ultrasonic machine probe to move forward and backward; The adjusting hand wheel is provided with a groove wheel structure and a clutch structure, the groove wheel structure includes a groove wheel and a wave bead structure, when the groove wheel rotates to a certain angle, the wave bead structure is clamped into the groove or hole of the groove wheel, and wave bead mechanical positioning is realized, when the adjusting hand wheel is locked through the clutch structure and the groove wheel structure, the adjusting hand wheel drives the groove wheel to rotate synchronously, the B-ultrasonic machine probe enters a step mode, when the operator rotates the adjusting hand wheel by a certain angle, the wave bead mechanical positioning feeling is felt, when the adjusting hand wheel is loosened through the clutch structure and the groove wheel structure, the operator can freely rotate the adjusting hand wheel and drive the B-ultrasonic machine probe to displace forward and backward, and no wave bead mechanical positioning feeling is felt.

2. The B-ultrasonic machine probe stepper for prostate puncture according to claim 1, characterized in that, When the operator rotates the adjusting hand wheel, the rotation angle corresponding to adjacent two times of wave bead mechanical positioning is a first interval angle, and the displacement amount of the B-ultrasonic machine probe corresponding to the first interval angle is 5 mm.

3. The B-ultrasonic machine probe stepper for prostate puncture according to claim 2, characterized in that, The groove wheel structure further includes a pressure plate, the pressure plate is fixed to the side of the push rod fixed seat, the wave bead structure includes at least one group of wave beads and springs, the groove wheel is sleeved on the pressure plate, the groove wheel and the pressure plate can relatively rotate, a plurality of groups of grooves are uniformly arranged on the inner side circumferential surface of the groove wheel, at least one wave bead structure is arranged on the outer side surface of the pressure plate, the springs give the wave beads elastic force for moving outward, when the grooves on the groove wheel are aligned with the wave bead structure, the wave beads are clamped into the grooves of the groove wheel, and the included angle corresponding to adjacent two grooves is a first interval angle.

4. The B-ultrasonic machine probe stepper for prostate puncture according to claim 3, characterized in that, The adjusting hand wheel and the adjusting gear are coaxially connected through a connecting column, the connecting column passes through the center through hole of the pressure plate, one end of the connecting column is fixedly connected with the adjusting gear, and the other end of the connecting column is locked with the adjusting hand wheel.

5. The B-ultrasonic machine probe stepper for prostate puncture according to claim 3, characterized in that, The first locking screw is arranged on the adjusting hand wheel, and unscrewing or screwing the first locking screw can make the locking screw away from or abut against the side of the pressure plate, so as to loosen or lock the adjusting hand wheel, and avoid the adjusting hand wheel from rotating due to being touched by mistake.

6. The B-ultrasonic machine probe stepper for prostate puncture according to claim 3, characterized in that, The groove wheel is provided with a scale ring, the scale ring is uniformly marked with scales, the scale ring can rotate relative to the groove wheel, and the scale ring and the groove wheel are in damping cooperation, so that the scale ring can rotate with the groove wheel under no external force; or the scale ring and the groove wheel are locked through a locking mechanism, so that the scale ring can rotate with the groove wheel.

7. The B-ultrasonic machine probe stepper for prostate puncture according to claim 6, characterized in that, The push rod fixed seat is provided with a reference scale, as the scale ring rotates with the groove wheel, the reference scale is aligned with different scale values on the scale ring in sequence, so that the operator can position the current position of the B-ultrasonic machine probe.

8. The B-ultrasonic machine probe stepper for prostate puncture according to claim 1, characterized in that, The clutch structure is a second locking screw, the second locking screw passes through the adjusting hand wheel, when the second locking screw is screwed in, the second locking screw abuts against the side of the notch wheel, locking of the adjusting hand wheel and the notch wheel is realized, the two rotate synchronously, the adjusting hand wheel and the notch wheel realize mechanical positioning of the wave beads every time a certain angle is rotated, when the second locking screw is screwed out, the second locking screw is away from the side of the notch wheel, at this time, the adjusting hand wheel is rotated, the notch wheel is not rotated, therefore, any mechanical positioning feeling of the wave beads is not felt.

9. The B-ultrasonic machine probe stepper for prostate puncture according to claim 1, characterized in that, The push rod slider and the B-ultrasonic machine probe are provided with a horizontal roll angle adjusting mechanism for adjusting the rotation of the B-ultrasonic machine probe around its own axis; the horizontal roll angle adjusting mechanism comprises a horizontal roll seat arranged on the push rod slider, a horizontal roll gear ring arranged on the horizontal roll seat, a horizontal roll gear arranged on the push rod slider, and a horizontal roll adjusting knob for adjusting the rotation of the horizontal roll gear; the B-ultrasonic machine probe is arranged on the horizontal roll seat, the horizontal roll seat rotates around the axial direction of the B-ultrasonic machine probe and is arranged on the push rod slider, the horizontal roll gear and the horizontal roll gear ring are engaged with each other, the horizontal roll adjusting knob directly or indirectly drives the rotation of the horizontal roll gear, thereby driving the rotation of the horizontal roll seat through the horizontal roll gear ring, so that the B-ultrasonic machine probe rotates around its own axis.

10. The B-ultrasonic machine probe stepper for prostate puncture according to claim 1, characterized in that, The push rod fixed seat is provided with a second push rod mechanism for advancing or retreating the puncture guide template, the puncture guide template is an array template, and a plurality of puncture guide holes are arranged in a rectangular array on the puncture guide template; The second push rod mechanism comprises an adjusting push rod movably arranged on the push rod fixed seat, the adjusting push rod can move axially relative to the push rod fixed seat, the push rod fixed seat is provided with an adjusting positioning member for positioning the adjusting push rod, a front end of the adjusting push rod is provided with an adjusting support assembly, and the puncture guide template is arranged on the adjusting support assembly.

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