Prostate puncture stent with locking mechanism

Abstract

The utility model discloses a prostate puncture support with a ground locking mechanism. An angle adjusting assembly used for adjusting the angle of a puncture guide template is arranged between a movable base and the puncture guide template. The movable base comprises a liftable movable supporting seat and a base moving set arranged at the bottom of the movable supporting seat. The base moving set comprises a universal wheel support fixed to the bottom of the movable supporting seat and universal wheels arranged on the universal wheel support. A plurality of ground feet capable of moving up and down are arranged on the universal wheel support, a plurality of ground foot driving sets are arranged between the universal wheel support and the ground feet, and each ground foot driving set drives the corresponding ground foot to move up and down so that the ground feet can make contact with or be separated from the ground. The whole device can easily move on the ground through the universal wheels, the whole device can be stably placed on the ground through contact between the ground feet and the ground, it is guaranteed that the position of the whole device is accurate, it is guaranteed that an operation is conducted smoothly, and safety and reliability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a prostate puncture stent with a locking mechanism. Background Technology

[0002] Currently, prostate biopsies are typically performed under MRI or ultrasound guidance. Ultrasound guidance involves inserting an ultrasound probe into the rectum through the anus. The probe rotates within the rectum, scanning the prostate area to obtain a series of continuous sagittal ultrasound images, thus determining the location of prostate cancer lesions. An auxiliary support is then needed to assist in positioning the puncture needle. A perineal prostate biopsy support, as described in patent CN206007334U, uses a puncture box and its puncture channel for assistance. While it allows adjustment of the needle height via an adjuster, it only adjusts the vertical height of the needle, resulting in limited freedom and flexibility in needle adjustment.

[0003] Existing technology, such as patent application number CN2024106269744, discloses an adjustable stepper for local treatment of prostate cancer, including an adjustment seat and a puncture template. The adjustment seat is used to adjust the height and forward / backward position of the puncture template. The puncture template includes an outer frame, an adjustment template, and an adjustment device. The outer frame is a hollow structure, and multiple adjustment templates are set within the hollow structure of the outer frame. One end of the adjustment template is rotatably connected to the inner wall of one side of the outer frame, and the other end passes through the outer frame and connects to the adjustment device. The adjustment device changes the angle and position of the adjustment template. The adjustment template also includes a limiting device located near the adjustment device to fix the adjusted template in position. In the above technical solution, the position and angle of the puncture needle and the ultrasound probe cannot be adjusted independently. Moreover, the bottom of the adjustment seat is equipped with casters, which only lock the entire device to the ground. For this type of surgery, the positioning of the puncture needle and the position of the needle tip need to be very precise. Positioning only with casters during the operation may lead to shaking, increasing the surgical risk. Therefore, it is very important to fix the entire device during the operation. Utility Model Content

[0004] The purpose of this invention is to provide a prostate puncture stent with a locking mechanism to address the shortcomings and unmet technical requirements of existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A prostate puncture stent with a grounding mechanism includes a movable base and a puncture guide template, wherein an angle adjustment component for adjusting the angle of the puncture guide template is provided between the movable base and the puncture guide template;

[0007] The mobile base includes a liftable mobile support base and a base moving assembly disposed at the bottom of the mobile support base. The base moving assembly includes a caster bracket fixed to the bottom of the mobile support base and casters disposed on the caster bracket.

[0008] The caster wheel bracket is provided with multiple feet that can move up and down. A foot drive group is provided between the caster wheel bracket and the feet. There are multiple foot drive groups. Each foot drive group drives the corresponding foot to move up and down, so as to make the feet contact or detach from the ground.

[0009] Preferably, the angle adjustment component includes a yaw angle adjustment mechanism and a pitch angle adjustment mechanism. The yaw angle adjustment mechanism can achieve left and right swing adjustment, and the pitch angle adjustment mechanism can achieve up and down swing adjustment.

[0010] Preferably, the angle adjustment assembly is provided with a first push rod mechanism for pushing the ultrasound probe forward or backward. The first push rod mechanism includes a push rod fixing seat on the angle adjustment assembly, a push rod slider on the push rod fixing seat, and an adjustment guide post fixed on the push rod slider. The adjustment guide post is disposed on the push rod fixing seat and can slide on the push rod fixing seat. The push rod fixing seat is provided with an adjustment gear set for adjusting the position of the adjustment guide post. The adjustment guide post is provided with an adjustment rack, and the adjustment gear set cooperates with the adjustment rack. The ultrasound probe is disposed on the push rod slider.

[0011] Preferably, the adjusting gear set includes an adjusting gear meshing with an adjusting rack and an adjusting handwheel driving the adjusting gear to rotate. When the adjusting handwheel rotates, it drives the adjusting rack to move back and forth, thereby driving the push rod slider and the ultrasound probe to move back and forth. The adjusting handwheel is provided with a grooved wheel structure and a clutch structure. The grooved wheel structure includes a grooved wheel and a ball structure. When the grooved wheel rotates a certain angle, the ball structure will engage with the groove or hole of the grooved wheel to achieve mechanical positioning of the ball. When the adjusting handwheel is locked to the grooved wheel structure through the clutch structure, the adjusting handwheel will drive the grooved wheel to rotate synchronously. When the operator rotates the adjusting handwheel to a certain angle, he will feel the mechanical positioning of the ball. The rotation angle corresponding to two adjacent mechanical positioning of the ball is the first interval angle. The displacement of the ultrasound probe corresponding to the first interval angle is 5mm. When the adjusting handwheel is released from the grooved wheel structure through the clutch structure, the operator can freely rotate the adjusting handwheel and drive the ultrasound probe to move back and forth without feeling any mechanical positioning of the ball.

[0012] Preferably, a roll angle adjustment mechanism is provided between the push rod slider and the ultrasound probe for adjusting the rotation of the ultrasound probe around its own axis. The roll angle adjustment mechanism includes a roll seat on the push rod slider, a roll gear ring on the roll seat, a roll gear on the push rod slider, and a roll adjustment knob for adjusting the rotation of the roll gear. The ultrasound probe is mounted on the roll seat, which is rotatably mounted on the push rod slider around the axial direction of the ultrasound probe. The roll gear and the roll gear ring mesh with each other. The roll adjustment knob directly or indirectly drives the roll gear to rotate, thereby driving the roll seat to rotate through the roll gear ring, so that the ultrasound probe rotates around its own axis.

[0013] Preferably, the foot drive assembly includes a foot cam rotatably mounted on the universal wheel bracket and a cam drive assembly that drives the foot cam to rotate. When the foot cam rotates to a certain angle, it will push the foot downward to achieve contact between the foot and the ground. The cam drive assembly includes a foot pedal structure.

[0014] Preferably, the foot drive assembly also includes a reset member, which is disposed between each foot and the caster wheel bracket. When the foot cam is reset to a certain angle, the reset member drives the foot to move upward and reset, thereby detaching the foot from the ground.

[0015] Preferably, the cam drive assembly further includes a synchronous transmission component that drives all foot cams to rotate simultaneously. The synchronous transmission component is one or a combination of a connecting rod structure, a transmission rod structure, a transmission wire structure, and a belt drive structure.

[0016] Preferably, when there are three feet, the universal wheel bracket has a three-pronged structure, with each foot located at the end of each prong of the three-pronged structure. The foot pedal structure is located on the first prong, and the foot pedal structure directly drives the foot cam on the first prong to rotate through the linkage structure. The foot pedal structure, through a combination of the transmission rod structure or the transmission wire structure and the linkage structure, synchronously drives the foot cams of the other two prongs to rotate, so that all foot cams rotate simultaneously.

[0017] Preferably, the angle adjustment component is provided with a second push rod mechanism to push the puncture guide template forward or backward. The puncture guide template is an array template, and multiple puncture guide holes are distributed in a rectangular array on the puncture guide template.

[0018] The second push rod mechanism includes a push rod fixing seat disposed on the angle adjustment assembly and an adjusting push rod movably disposed on the push rod fixing seat. The adjusting push rod can move axially relative to the push rod fixing seat. The push rod fixing seat is provided with an adjusting positioning component for positioning the adjusting push rod. The front end of the adjusting push rod is provided with an adjusting support assembly. The puncture guide template is disposed on the adjusting support assembly.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. The mobile base of this application is equipped with an angle adjustment component for adjusting the posture and angle of the puncture guide template. The angle adjustment component realizes the adjustment of the angle and direction of the puncture guide template in three-dimensional space through the yaw angle adjustment mechanism and the pitch angle adjustment mechanism, which can adapt to the patient position in different positions and has a good operating range and adaptability; the roll angle adjustment mechanism realizes the rotation of the B-ultrasound probe, which can realize the change of the angle of the detection section for the lesion. Its adjustment is convenient, quick and safe.

[0021] 2. This application includes a grooved wheel structure and a clutch structure. The grooved wheel structure includes a grooved wheel and a ball bearing structure. When the grooved wheel rotates to a certain angle, the ball bearing structure will engage with the groove or hole of the grooved wheel to achieve mechanical positioning of the ball bearing. When the adjusting handwheel is locked to the grooved wheel structure through the clutch structure, the adjusting handwheel will drive the grooved wheel to rotate synchronously. When the operator rotates the adjusting handwheel to a certain angle, he will feel the mechanical positioning of the ball bearing. The rotation angle corresponding to two adjacent mechanical positioning of the ball bearing is the first interval angle. The displacement of the ultrasound probe corresponding to the first interval angle is 5mm, which can accurately adjust the distance between two adjacent ultrasound image sections.

[0022] 3. The bottom of the mobile support base of this application is fixed with a caster wheel bracket, on which casters are mounted; the caster wheel bracket is also provided with feet that can move up and down, and a foot drive group is provided between the caster wheel bracket and the feet. The foot drive group can simultaneously drive the feet to move up and down, so that the feet can contact or detach from the ground. The casters can be used to move the entire device easily on the ground, and the feet can be used to contact the ground to ensure that the entire device is stably placed on the ground, ensuring the precise positioning of the entire device, ensuring the smooth and safe operation of the surgery. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0024] Figure 2 This is a schematic diagram of the angle adjustment component of Embodiment 1 of this utility model;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the yaw angle adjustment mechanism and the pitch angle adjustment mechanism in Embodiment 1 of this utility model;

[0026] Figure 4 This is a schematic diagram of the assembly structure of the push rod mechanism and the roll angle adjustment mechanism in Embodiment 1 of this utility model. Figure 1 ;

[0027] Figure 5This is a schematic diagram of the assembly structure of the push rod mechanism and the roll angle adjustment mechanism in Embodiment 1 of this utility model. Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the roll angle adjustment mechanism of Embodiment 1 of this utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the movable base in Embodiment 1 of this utility model;

[0030] Figure 8 This is a schematic diagram of the internal structure of the movable base in Embodiment 1 of this utility model;

[0031] Figure 9 This is a schematic diagram of the guide shaft structure of Embodiment 1 of this utility model;

[0032] Figure 10 This is a schematic diagram of another adjusting handwheel with a guide template in Embodiment 2 of this utility model;

[0033] Figure 11 This is an internal sectional view of the adjusting handwheel in Embodiment 2 of this utility model;

[0034] Figure 12 This is a schematic diagram of the grooved wheel in Embodiment 2 of this utility model. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Example 1

[0037] A prostate puncture stent with a grounding mechanism includes a movable base 101 and a puncture guide template 3, wherein an angle adjustment component 103 for adjusting the angle of the puncture guide template is provided between the movable base and the puncture guide template.

[0038] The mobile base includes a liftable mobile support 1203105 and a base moving assembly disposed at the bottom of the mobile support 1203105. The base moving assembly includes a caster bracket 1203106 fixed to the bottom of the mobile support and casters 1203103 disposed on the caster bracket 1203106.

[0039] The caster wheel bracket is provided with multiple feet 1203102 that can move up and down. A foot drive group is provided between the caster wheel bracket and the feet. There are multiple foot drive groups. Each foot drive group drives the corresponding foot to move up and down, so as to make each foot contact with or detach from the ground.

[0040] The angle adjustment assembly includes a yaw angle adjustment mechanism 1031 and a pitch angle adjustment mechanism 1032. The yaw angle adjustment mechanism 1031 can achieve left and right swing adjustment, and the pitch angle adjustment mechanism 1032 can achieve up and down swing adjustment.

[0041] The angle adjustment assembly is provided with a first push rod mechanism 1033 for pushing the ultrasound probe forward or backward. The first push rod mechanism 1033 includes a push rod fixing seat on the angle adjustment assembly, a push rod slider on the push rod fixing seat, and an adjusting guide post fixed on the push rod slider. The adjusting guide post is disposed on the push rod fixing seat and can slide on the push rod fixing seat. The push rod fixing seat is provided with an adjusting gear set for adjusting the position of the adjusting guide post. The adjusting guide post is provided with an adjusting rack, and the adjusting gear set cooperates with the adjusting rack. The ultrasound probe is disposed on the push rod slider.

[0042] The adjusting gear set includes an adjusting gear 10336 that meshes with the adjusting rack 10335 and an adjusting handwheel 10337 that drives the adjusting gear to rotate. When the adjusting handwheel 10337 rotates, it will drive the adjusting rack 10335 to move back and forth, thereby driving the push rod slider and the ultrasound probe to move back and forth.

[0043] A roll angle adjustment mechanism 1034 is provided between the push rod slider and the ultrasound probe for adjusting the rotation of the ultrasound probe around its own axis. The roll angle adjustment mechanism includes a roll seat on the push rod slider, a roll gear ring on the roll seat, a roll gear on the push rod slider, and a roll adjustment knob for adjusting the rotation of the roll gear. The ultrasound probe is mounted on the roll seat, which is rotatably mounted on the push rod slider around the axis of the ultrasound probe. The roll gear and the roll gear ring mesh with each other. The roll adjustment knob directly or indirectly drives the roll gear to rotate, thereby driving the roll seat to rotate through the roll gear ring, so that the ultrasound probe rotates around its own axis.

[0044] This embodiment mainly focuses on performing biopsies on prostate patients, such as... Figures 1-7 As shown, in order to facilitate the operation on prostate patients, a puncture guide template 3 is provided on the movable base 101, and the hollow puncture needle 10 is set on the puncture guide template 3. The puncture guide template 3 can realize the equidistant guidance and insertion of the hollow puncture needle 10 and the automatic needle removal operation.

[0045] like Figure 1 and Figure 7 As shown, the movable base 101 includes a height-adjustable movable support base 1203105 and a base moving assembly disposed at the bottom of the movable support base 1203105. The base moving assembly includes a caster wheel bracket 1203106 fixed to the bottom of the movable support base 1203105 and casters 1203103 disposed on the caster wheel bracket 1203106. Moving the movable support base 1203105 and using the casters 1203103 allows the movable base 101 to move. The height adjustment of the movable support base 1203105 can accommodate patient positions at different heights. This height adjustment can be achieved through a screw and nut structure.

[0046] To facilitate puncture after aligning with the lesion, an angle adjustment component 103 for adjusting the angle of the puncture guide template 3 is provided between the movable base 101 and the puncture guide template 3. For example... Figure 2 The angle adjustment assembly 103 shown includes a yaw angle adjustment mechanism 1031 mounted on a movable base 101 and a pitch angle adjustment mechanism 1032 mounted on the yaw angle adjustment mechanism 1031. The yaw angle adjustment mechanism 1031 can achieve horizontal swing adjustment with the vertical axis as the axis, and the pitch angle adjustment mechanism 1032 can achieve vertical swing adjustment with the horizontal axis as the axis. The combination of the two enables multi-angle and multi-directional adjustment of the puncture guide template 3 in three-dimensional space. The installation order of the yaw angle adjustment mechanism 1031 and the pitch angle adjustment mechanism 1032 can be interchanged.

[0047] like Figure 3 As shown, the yaw angle adjustment mechanism 1031 includes a yaw angle fixing member 10311 fixed on the movable base 101 and a yaw angle rotating member 10312 disposed on the yaw angle fixing member 10311. The yaw angle fixing member 10311 is cylindrical, and the yaw angle rotating member 10312 is sleeved on the yaw angle fixing member 10311 and can rotate relative to the yaw angle fixing member 10311 with the axis of the yaw angle fixing member 10311 as the axis. The pitch angle adjustment mechanism 1032 is mounted on the yaw angle rotating member 10312. At the same time, a yaw angle positioning member 10313 is provided between the yaw angle rotating member 10312 and the yaw angle fixing member 10311. When the yaw angle rotating member 10312 rotates to the desired position, the yaw angle positioning member 10313 positions and fixes the position and maintains it. The yaw angle adjustment mechanism 1031 can be adjusted manually or automatically by a motor.

[0048] like Figure 2 and Figure 3As shown, the pitch angle adjustment mechanism 1032 includes a pitch angle adjustment shaft 10321 disposed on the yaw angle rotating member 10312 and a pitch angle rotating member 10322 disposed on the pitch angle adjustment shaft 10321. The pitch angle adjustment shaft 10321 is horizontally arranged, and the pitch angle rotating member 10322 rotates around the pitch angle adjustment shaft 10321. At the same time, a pitch angle positioning member 10323 is disposed between the pitch angle rotating member 10322 and the yaw angle rotating member 10312. When the pitch angle rotating member 10322 rotates to the desired position, it is positioned and fixed by the pitch angle positioning member 10323 and its position is maintained. The pitch angle adjustment mechanism 1032 can be adjusted manually or automatically by a motor. A drive handle 1036 can be disposed on the pitch angle rotating member 10322. By holding the drive handle 1036, fine adjustments to the yaw angle and pitch angle can be made simultaneously.

[0049] like Figure 2 , Figure 4 and Figure 5 As shown, the pitch angle adjustment mechanism 1032 of the angle adjustment assembly is provided with a first push rod mechanism 1033. The first push rod mechanism 1033 includes a push rod fixing seat 10331 disposed on the pitch angle rotating member 10322, a push rod slider 10332 disposed on the push rod fixing seat 10331, and an adjustment guide post 10333 fixed on the push rod slider 10332. There are two adjustment guide posts 10333, which are arranged in parallel and one end of each is fixed to the push rod slider 10332. The other ends of the two adjustment guide posts 10333 are connected by a guide post connecting plate 10334. The adjustment guide post 10333 is disposed on the push rod fixing seat 10331 and can slide on the push rod fixing seat 10331. A through hole can be opened in the push rod fixing seat 10331. 3. Inserted into the through hole, the push rod fixing seat 10331 is provided with an adjusting gear set for adjusting the position of the adjusting guide post 10333. At the same time, the adjusting guide post 10333 is provided with an adjusting rack 10335. The adjusting gear set cooperates with the adjusting rack 10335. The adjusting rack 10335 can be directly formed on the adjusting guide post 10333, or it can be fixed on the adjusting guide post 10333 by means of screws or other methods. The adjusting gear set includes an adjusting gear 10336 that meshes with the adjusting rack 10335 and an adjusting handwheel 10337 that drives the adjusting gear 10336 to rotate. The adjusting gear 10336 is composed of multiple gears. By rotating the adjusting handwheel 10337, the adjusting gear 10336 is driven to rotate. The adjusting gear 10336 drives the adjusting rack 10335 to achieve linear movement.

[0050] like Figure 1As shown, an ultrasound probe 105 is provided on the push rod slider 10332. The adjusting guide post 10333 can push the push rod slider 10332 to bring the ultrasound probe 105 closer to or away from the biological tissue. Specifically, the ultrasound probe 105 is inserted into the anus of the biological tissue and used to obtain ultrasound images of the prostate area. Then, the puncture needle is guided through the perineum to puncture the prostate through the puncture guide template 3.

[0051] like Figure 4 and Figure 5 As shown, the push rod fixing seat 10331 is provided with two adjusting push rods 10338. The push rod fixing seat 10331 is also provided with adjusting positioning components (such as hand-tightening screws, not shown in the figure) for positioning the adjusting push rods 10338. An adjusting support assembly 104 is provided at one end of each of the two adjusting push rods 10338, and a push rod connecting plate 10339 is provided at the other end. A push rod handle 103310 is provided on the push rod connecting plate 10339. The puncture guide template (not shown in the figure, but can be referenced)... Figure 10 The puncture guide template 3 is set on the adjustment support assembly 104. The adjustment push rod 10338 is pushed by the push rod handle 103310 to adjust the puncture guide template 3 to move closer to or away from the biological tissue 7. The adjustment support assembly 104 is provided with a through hole 1041, which allows the ultrasound probe 105 to be inserted and rotated within it.

[0052] The aforementioned movements of the ultrasound probe 105 and the adjustment support assembly 104 are independent and can be adjusted separately. Furthermore, to enable the ultrasound probe 105 to detect a complete cross-section, it needs to be rotated. A roll angle adjustment mechanism 1034 is provided between the push rod slider 10332 and the ultrasound probe 105. Figures 4-6The roll angle adjustment mechanism 1034 shown is used to rotate the ultrasound probe 105 along its axis. The roll angle adjustment mechanism 1034 includes a roll seat 10341 mounted on a push rod slider 10332, a roll gear ring 10342 mounted on the roll seat 10341, a roll gear 10343 mounted on the push rod slider 10332, and a roll adjustment knob 10344 for adjusting the rotation of the roll gear 10343. The ultrasound probe 105 is mounted on the roll seat 10341 and can be fixed to the roll seat 10341 by a pressure ring. The roll seat 10341 can rotate relative to the push rod slider 10332. The push rod slider 10332 includes a rotation limiting block 10345, in which an arc-shaped limiting groove is provided. The roller seat 10341 is provided with an arc-shaped protrusion 10347, which slides in an arc-shaped limiting groove. By rotating the roll adjustment knob 10344, the roll gear 10343 is rotated, which drives the roll gear ring 10342 to move. The roll gear ring 10342 is also arc-shaped. The roller seat 10341 rotates with the roll gear ring 10342, thereby realizing the rotation of the ultrasound probe 105. The roll adjustment knob 10344 is provided on the guide post connecting plate 10334. A roll connecting rod 10346 is provided between the roll adjustment knob 10344 and the roll gear 10343. The roll connecting rod 10346 is used to transmit the force of the roll adjustment knob 10344 to the roll gear 10343 to realize the adjustment of the roller seat 10341.

[0053] The foot drive assembly includes a foot cam 1203108 rotatably mounted on the universal wheel bracket and a cam drive assembly that drives the foot cam to rotate. When the foot cam rotates to a certain angle, it will push the foot downward to achieve contact between the foot and the ground. The cam drive assembly includes a foot pedal structure.

[0054] The foot drive assembly also includes a reset component (such as the first spring 1203111 in this embodiment). The reset component is disposed between each foot and the universal wheel bracket. When the foot cam is reset to a certain angle, the reset component drives the foot to move upward and reset, thereby detaching the foot from the ground.

[0055] The cam drive assembly also includes a synchronous transmission component that drives all foot cams to rotate simultaneously. The synchronous transmission component is one or a combination of a connecting rod structure, a transmission rod structure, a transmission wire structure, and a belt drive structure.

[0056] When there are three feet, the universal wheel bracket has a three-pronged structure. Each foot is located at the end of each prong of the three-pronged structure. The foot pedal structure is located on the first prong. The foot pedal structure directly drives the foot cam on the first prong to rotate through the linkage structure. The foot pedal structure drives the foot cams of the other two prongs to rotate synchronously through the combination of the transmission rod structure or the transmission wire structure and the linkage structure, so that all foot cams rotate at the same time.

[0057] like Figures 7 to 9 As shown, when the pedal 1203101 is pressed down at different positions, the foot 1203102 can be raised or lowered. When the foot 1203102 moves down, it contacts the ground, and the caster 1203103 will be suspended off the ground, thus stabilizing the entire mobile base on the ground. When the foot 1203102 moves up, it loses contact with the ground, the caster 1203103 contacts the ground, and the foot 1203102 is suspended off the ground, at which point the entire mobile base can move easily on the ground.

[0058] Linkage A1203107 and connecting shaft 1203113 are hinged to pedal 1203101 via pins. Linkage A1203107 is hinged to foot cam 1203108. Foot cam 1203108 engages with pin 1203121. Pin 1203121 engages with fixed seat 1203122 (fixed seat 1203122 is connected to movable base). Foot cam 1203108 can rotate around pin 1203121. The foot cam 1203108 contacts the baffle 1203109. The baffle 1203109 is fixedly connected to the upper end of the lifting shaft 1203110 or integrally formed. The foot 1203102 is fixed to the lower end of the lifting shaft 1203110. The first spring 1203111 is sleeved on the lifting shaft 1203110. One end of the first spring 1203111 abuts against the baffle 1203109, and the other end abuts against the base 1203123. In the initial state, the baffle 1203109 presses against the foot cam 1203108 upward under the action of the first spring 1203111, and the foot cam 1203102 is suspended in the air. When one side of the baffle 1203109 is stepped on, the connecting rod A1203107 drives the foot cam 1203108 to flip outward together until the foot cam 1203108 is in a vertical state. At this time, the first spring is compressed, and the baffle 1203109, the lifting shaft 1203110 and the foot cam 1203102 move downward together. The foot cam 1203102 presses against the ground, lifting the entire movable base, and the caster wheel 1203103 is suspended in the air. Connecting shaft 1203113 is hinged to connector A1203114. Connector A1203114 is fixed to one end of guide shaft 1203120. Guide shaft 1203120 mates with guide seat A1203115, allowing it to slide within guide seat A1203115. The other end of guide shaft 1203120 is fixed to one end of flexible metal wire 1203112, and the other end of flexible metal wire 1203112 passes through transmission tube 12. 03116 is fixed to one end of the guide shaft 1203120 on a branch. One end of the transmission tube 1203116 is fixed to the guide seat A1203115, and the other end is fixed to the guide seat B1203118. The other end of the guide shaft 1203120 on the branch is fixed to the joint B1203119. The joint B1203119 is hinged to the connecting rod B1203117. The connecting rod B1203117 is hinged to the foot cam 1203108 on a branch. The same applies to the other branch. The foot cams 1203108 on these two branches are pulled inward and flipped by the connecting rod B1203117, thereby pressing against the baffle 1203109. So when the pedal 1203101 is pressed, the transmission tube 1203116 and the flexible metal wire 1203112 are relatively displaced, thereby transmitting power to the connecting rod B1203117. The three foot cams 1203108 are simultaneously in a vertical state, thereby pushing out the foot 1203102.

[0059] The flexible metal wire 1203112 and the transmission tube 1203116 can be replaced by other synchronous transmission mechanisms. It is only necessary to synchronously drive multiple foot cams to rotate. Specifically, synchronous belts, linkage mechanisms, gear mechanisms, transmission rod structures, etc. can be used. Four or five foot cams 1203102 and foot cams 1203108 can also be provided, which will not be elaborated here.

[0060] Example 2

[0061] The parts of this embodiment that are structurally identical to those in Embodiment 1 will not be described again. The differences are as follows:

[0062] The adjusting handwheel is equipped with a grooved wheel structure 103371 and a clutch structure 103372. The grooved wheel structure includes a grooved wheel and a ball bearing structure. When the grooved wheel rotates to a certain angle, the ball bearing structure will engage with the groove or hole of the grooved wheel to achieve mechanical positioning of the ball bearing. When the adjusting handwheel is locked to the grooved wheel structure through the clutch structure, the adjusting handwheel will drive the grooved wheel to rotate synchronously. When the operator rotates the adjusting handwheel to a certain angle, he will feel the mechanical positioning of the ball bearing. The rotation angle corresponding to two adjacent mechanical positioning of the ball bearing is the first interval angle. The displacement of the ultrasound probe corresponding to the first interval angle is 5mm. When the adjusting handwheel is released from the grooved wheel structure through the clutch structure, the operator can freely rotate the adjusting handwheel and drive the ultrasound probe to move back and forth without feeling any mechanical positioning of the ball bearing.

[0063] The angle adjustment component is provided with a second push rod mechanism that pushes the puncture guide template forward or backward. The puncture guide template is an array template, and multiple puncture guide holes 301 are distributed in a rectangular array on the puncture guide template.

[0064] The second push rod mechanism includes a push rod fixing seat disposed on the angle adjustment assembly and an adjusting push rod movably disposed on the push rod fixing seat. The adjusting push rod can move axially relative to the push rod fixing seat. The push rod fixing seat is provided with an adjusting positioning component for positioning the adjusting push rod. The front end of the adjusting push rod is provided with an adjusting support assembly. The puncture guide template is disposed on the adjusting support assembly.

[0065] like Figures 10-12 As shown, in order to facilitate the operation on prostate patients, the movable base 101 is provided with a puncture guide template 3. The puncture guide template can also be set on the bedside adjustable instrument support. The hollow puncture needle 10 passes through the puncture guide hole 301 on the puncture guide template 3. The puncture guide hole 301 can ensure that the insertion direction of the hollow puncture needle 10 is parallel.

[0066] The adjusting handwheel 10337 is provided with a grooved wheel structure 103371 and a clutch structure 103372, the clutch structure 103372 being a clamping screw 10337202; the grooved wheel structure includes a pressure plate 10337201, a grooved wheel 10337101, and a ball bearing structure. The pressure plate 10337201 is fixed to the side of the push rod fixing seat 10331, and the grooved wheel 10337101 is sleeved on the pressure plate 10337201. The grooved wheel 10337101 and the pressure plate 10337201 can rotate relative to each other. The inner grooved wheel 10337101... Multiple sets of grooves 103371011 are evenly distributed on the side circumference. The ball structure includes a ball 10337102 and a second spring 10337103. The pressure plate 10337201 is provided with a spring groove. The second spring 10337103 is abutted between the spring groove and the ball. When the grooved wheel rotates to a certain angle, the ball will be locked into the groove 103371011 of the grooved wheel, making a "click" sound, thus realizing the mechanical positioning of the ball. By unscrewing or screwing in the clamping screw, the grooved wheel 10337101 can be locked or disengaged from the adjusting handwheel, thus realizing the clutch function. When the adjusting handwheel is locked to the grooved wheel structure through the clutch mechanism, the adjusting handwheel will drive the grooved wheel 10337101 to rotate synchronously. When the operator rotates the adjusting handwheel by a certain angle, he will feel the mechanical positioning of the ball bearings. The rotation angle corresponding to the mechanical positioning of two adjacent ball bearings is the first interval angle (that is, the included angle between two adjacent grooves 103371011 is the first interval angle). The displacement of the ultrasound probe corresponding to the first interval angle is 5mm. In this way, the operator can drive the ultrasound probe at equal distances according to the feel, thereby achieving equal distance distribution of two adjacent ultrasound image sections.

[0067] When the adjusting handwheel is released from the clutch mechanism and the grooved wheel mechanism, the operator can freely rotate the adjusting handwheel and move the ultrasound probe back and forth without feeling any mechanical positioning of the ball bearings. At this time, the ultrasound probe can be aimed at the deepest part of the prostate. Then, tighten the clamping screw 10337202 to enter the stepping mode. After that, the operator can control the stepping every 5mm by feel, achieving precise interval positioning of the ultrasound probe. This allows the operator to easily adjust the ultrasound probe to any cross-sectional position.

[0068] Furthermore, the adjusting handwheel 10337 is equipped with a locking screw 103373. Unscrewing or screwing the locking screw 103373 can move the locking screw 103373 away from or against the side of the pressure plate 10337201, thereby loosening or locking the adjusting handwheel 10337 and preventing accidental contact with the adjusting handwheel and causing it to rotate.

[0069] Furthermore, the adjusting handwheel 10337 and the adjusting gear 10336 are coaxially connected through the connecting column 1033601. The adjusting gear 10336 meshes with the adjusting rack 10335. The connecting column 1033601 passes through the central through hole of the pressure plate 10337201. One end of the connecting column 1033601 is fixedly connected to the adjusting gear 10336, and the other end of the connecting column 1033601 is locked to the adjusting handwheel 10337.

[0070] Furthermore, a graduated ring can be added to the grooved wheel 10337101. The graduated ring is evenly marked with graduations. It can be manually adjusted to rotate around the axis of the grooved wheel 10337101. However, without manual adjustment (or by adding a locking structure to lock the graduated ring to the grooved wheel 10337101), the graduated ring will rotate with the grooved wheel 10337101. At the same time, a reference graduation is added at the corresponding position of the push rod fixing seat 10331. When the ultrasound probe is aimed at the deepest part of the prostate, the graduated ring is rotated so that the zero graduation is aligned with the reference graduation. After the ultrasound probe is adjusted to enter the stepping mode, as the graduated ring rotates with the grooved wheel 10337101, the reference graduation is aligned with different graduation values ​​on the graduated ring in sequence, allowing the operator to know the current cross-sectional position of the ultrasound probe.

[0071] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for 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 can be understood by those skilled in the art.

Claims

1. A prostate puncture stent with a locking mechanism, characterized in that, It includes a movable base and a puncture guide template, wherein an angle adjustment component for adjusting the angle of the puncture guide template is provided between the movable base and the puncture guide template; The mobile base includes a liftable mobile support base and a base moving assembly disposed at the bottom of the mobile support base. The base moving assembly includes a caster bracket fixed to the bottom of the mobile support base and casters disposed on the caster bracket. The caster wheel bracket is provided with multiple feet that can move up and down. A foot drive group is provided between the caster wheel bracket and the feet. There are multiple foot drive groups. Each foot drive group drives the corresponding foot to move up and down, so as to make the feet contact or detach from the ground.

2. The prostate puncture stent with locking mechanism according to claim 1, characterized in that, The angle adjustment component includes a yaw angle adjustment mechanism and a pitch angle adjustment mechanism. The yaw angle adjustment mechanism can be adjusted by swinging left and right, and the pitch angle adjustment mechanism can be adjusted by swinging up and down.

3. A prostate puncture stent with a locking mechanism according to claim 1, characterized in that, The angle adjustment assembly is equipped with a first push rod mechanism that pushes the ultrasound probe forward or backward. The first push rod mechanism includes a push rod fixing seat on the angle adjustment assembly, a push rod slider on the push rod fixing seat, and an adjusting guide post fixed on the push rod slider. The adjusting guide post is mounted on the push rod fixing seat and can slide on the push rod fixing seat. The push rod fixing seat is equipped with an adjusting gear set for adjusting the position of the adjusting guide post. The adjusting guide post is equipped with an adjusting rack, and the adjusting gear set cooperates with the adjusting rack. The ultrasound probe is mounted on the push rod slider.

4. A prostate puncture stent with a locking mechanism according to claim 3, characterized in that, The adjusting gear set includes an adjusting gear meshing with an adjusting rack and an adjusting handwheel that drives the adjusting gear to rotate. When the adjusting handwheel rotates, it drives the adjusting rack to move back and forth, thereby driving the push rod slider and the ultrasound probe to move back and forth. The adjusting handwheel is equipped with a grooved wheel structure and a clutch structure. The grooved wheel structure includes a grooved wheel and a ball structure. When the grooved wheel rotates to a certain angle, the ball structure will engage with the groove or hole of the grooved wheel to achieve mechanical positioning of the ball. When the adjusting handwheel is locked to the grooved wheel structure through the clutch structure, the adjusting handwheel will drive the grooved wheel to rotate synchronously. When the operator rotates the adjusting handwheel to a certain angle, they will feel the mechanical positioning of the ball. The rotation angle corresponding to two adjacent mechanical positioning of the ball is the first interval angle. The displacement of the ultrasound probe corresponding to the first interval angle is 5mm. When the adjusting handwheel is released from the grooved wheel structure through the clutch structure, the operator can freely rotate the adjusting handwheel and drive the ultrasound probe to move back and forth without feeling any mechanical positioning of the ball.

5. A prostate puncture stent with a locking mechanism according to claim 3, characterized in that, A roll angle adjustment mechanism is provided between the push rod slider and the ultrasound probe for adjusting the rotation of the ultrasound probe around its own axis. The roll angle adjustment mechanism includes a roll seat mounted on the push rod slider, a roll gear ring mounted on the roll seat, a roll gear mounted on the push rod slider, and a roll adjustment knob for adjusting the rotation of the roll gear. The ultrasound probe is mounted on the roll seat, which is rotatably mounted on the push rod slider around the axial direction of the ultrasound probe. The roll gear and the roll gear ring mesh with each other. The roll adjustment knob directly or indirectly drives the roll gear to rotate, thereby driving the roll seat to rotate through the roll gear ring, so that the ultrasound probe rotates around its own axis.

6. A prostate puncture stent with a locking mechanism according to claim 1, characterized in that, The foot drive assembly includes a foot cam rotatably mounted on the universal wheel bracket and a cam drive assembly that drives the foot cam to rotate. When the foot cam rotates to a certain angle, it will push the foot downward to make contact with the ground. The cam drive assembly includes a foot pedal structure.

7. A prostate puncture stent with a locking mechanism according to claim 6, characterized in that, The foot drive assembly also includes a reset component, which is disposed between each foot and the caster wheel bracket. When the foot cam is reset to a certain angle, the reset component drives the foot to move upward and reset, thereby detaching the foot from the ground.

8. A prostate puncture stent with a locking mechanism according to claim 6, characterized in that, The cam drive assembly also includes a synchronous transmission component that drives all foot cams to rotate simultaneously. The synchronous transmission component is one or a combination of a connecting rod structure, a transmission rod structure, a transmission wire structure, and a belt drive structure.

9. A prostate puncture stent with a locking mechanism according to claim 8, characterized in that, When there are three feet, the universal wheel bracket has a three-pronged structure. Each foot is located at the end of each prong of the three-pronged structure. The foot pedal structure is located on the first prong. The foot pedal structure directly drives the foot cam on the first prong to rotate through the linkage structure. The foot pedal structure drives the foot cams of the other two prongs to rotate synchronously through the combination of the transmission rod structure or the transmission wire structure and the linkage structure, so that all foot cams rotate at the same time.

10. A prostate puncture stent with a locking mechanism according to claim 1, characterized in that, The angle adjustment component is provided with a second push rod mechanism that pushes the puncture guide template forward or backward. The puncture guide template is an array template with multiple puncture guide holes distributed in a rectangular array on the puncture guide template. The second push rod mechanism includes a push rod fixing seat disposed on the angle adjustment assembly and an adjusting push rod movably disposed on the push rod fixing seat. The adjusting push rod can move axially relative to the push rod fixing seat. The push rod fixing seat is provided with an adjusting positioning component for positioning the adjusting push rod. The front end of the adjusting push rod is provided with an adjusting support assembly. The puncture guide template is disposed on the adjusting support assembly.

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