A CT-guided intelligent precision puncture auxiliary stent and its usage method

Abstract

This invention relates to the field of medical instrument technology and discloses an intelligent precision puncture auxiliary support under CT guidance and its usage method. The support includes a base, with a connecting component on the rear side of the base for connecting it to a CT scanner. An arc-shaped frame is connected to the top of the base via an adjustment component. This invention enables the automatic placement of a sampling box below the puncture needle while simultaneously injecting culture medium to remove pathological tissue from the puncture needle. The entire removal process is simple and short, minimizing the risk of pathological tissue falling out of the puncture needle. Furthermore, as the sampling box rotates with the stage and is positioned below the puncture needle, the rubber pad of the annular plate contacts the inner side of the side plate, allowing the stage to rotate slowly downwards and reach a horizontal position more quickly. This avoids continuous swaying of the stage due to inertia, preventing it from quickly reaching a horizontal position.

Description

Technical Field

[0001] This invention belongs to the field of medical instrument technology, and specifically relates to an intelligent precision puncture auxiliary stent under CT guidance and its usage method. Background Technology

[0002] CT-guided needle biopsy (CTNB) is a special pathological examination technique in which a needle is accurately inserted into the lesion with the assistance of a CT scanner to obtain cytological or histological material to clarify the nature of the lesion.

[0003] In CT biopsy procedures, an auxiliary support is required. Chinese patent application number 201911371340.4 discloses a CT puncture needle navigation device. During puncture, this device controls the movement of the auxiliary support via a first electric telescopic rod, which in turn moves the puncture needle held in place by the gripper, thus controlling the depth of needle insertion to align with the lesion location. This automated mechanical puncture improves accuracy and avoids the problem of hand-held puncture, which can lead to wound enlargement due to tremors. However, when used for pathological tissue sampling, the entire puncture needle needs to be removed after unfixation before the tissue is extracted and placed into a sampling container. This process is cumbersome, lengthy, and prone to tissue detachment from the needle, resulting in sampling failure.

[0004] Therefore, it is necessary to invent an intelligent precision puncture auxiliary stent under CT guidance and its usage method to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a CT-guided intelligent precision puncture assist stent and its usage method, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent precision puncture auxiliary support under CT guidance, comprising a base, a connecting component for connecting the base to a CT scanner on its rear side, an arc-shaped frame connected to the top of the base via an adjustment component, an arc-shaped plate slidably mounted inside the arc-shaped frame, an adjustment component for adjusting the position of the arc-shaped plate on the outside of the arc-shaped frame, an installation opening on the top of the arc-shaped plate, a rotating shaft rotatably mounted within the installation opening, a connecting plate fixedly sleeved on the outside of the rotating shaft, and a support plate fixedly connected to the top of the connecting plate. A first motor is fixedly connected to the outer side of the plate. One end of the output shaft of the first motor is fixedly connected to one end of the rotating shaft. A gasket is fixedly connected to the top of the support plate. A bracket is fixedly connected to the rear side of the support plate through a first electric push rod. Movable shafts are rotatably mounted on both sides of the support plate. Side plates are fixedly connected to the outer ends of the movable shafts. A platform is fixedly connected between the two side plates. A limiting component for limiting the movable shafts is provided on the outside of the support plate. A positioning component for positioning the sampling box placed in the platform is provided on the side plates. A liquid supply component for providing culture medium is provided on the support plate.

[0007] Furthermore, the limiting assembly includes a ratchet, one end of the movable shaft on one side extends out of the side plate and is fixedly connected to the ratchet, a round shaft is rotatably mounted on the side of the support plate near the ratchet, a pawl that cooperates with the ratchet is fixedly connected to the end of the round shaft away from the support plate, a torsion spring is sleeved on the outside of the round shaft, the two ends of the torsion spring are fixedly connected to the round shaft and the support plate respectively, a crossbar is fixedly connected to the outside of the card seat, a connecting block is fixedly connected to the top of the pawl, and the connecting block and the crossbar are connected by a pull rope.

[0008] Furthermore, a limiting rod is fixedly connected to the side of the support plate near the pawl. The limiting rod has a T-shaped cross-section. A sliding plate is slidably fitted on the outside of the limiting rod. A ring plate is fixedly connected to one end of the sliding plate near the side plate. The ring plate is fitted outside the movable shaft. A rubber pad is provided on the side of the ring plate near the side plate. An L-shaped block is fixedly connected to the end of the sliding plate away from the ring plate. The top of the L-shaped block has an arc surface facing the support plate. The arc surface cooperates with the tail of the pawl. A spring is fitted on the outside of the limiting rod.

[0009] Furthermore, the liquid supply assembly includes a channel formed in the middle of the support plate and penetrating the support plate. A storage box is fixedly connected to the outside of the arc frame. A pump body is provided on the top of the storage box. The pump body's pumping end is connected to the inside of the storage box through a connecting pipe. The pump body's water supply end is connected to the end of the channel away from the platform through a flexible hose.

[0010] Furthermore, the adjustment assembly includes a housing, which is fixedly connected to the upper inner side of the arc-shaped frame. The housing is in communication with the interior of the arc-shaped frame. A horizontal shaft is rotatably mounted inside the housing. A gear is fixedly sleeved on the outside of the horizontal shaft. A toothed groove that mates with the gear is provided on the inner side of the arc-shaped plate. A second motor is fixedly connected to the outside of the housing. One end of the output shaft of the second motor is fixedly connected to one end of the horizontal shaft.

[0011] Furthermore, the adjustment assembly includes an arc-shaped guide rail fixedly connected to the top of the base, a slide plate slidably fitted on the outside of the arc-shaped guide rail, a carrier plate fixedly connected to the top of the slide plate by a support rod, an arc-shaped frame fixedly connected to the top of the carrier plate, a groove opened on the top of the base, a third motor fixedly connected in the groove, and the output shaft of the third motor fixedly connected to the slide plate by a fixing plate.

[0012] Furthermore, the connecting assembly includes a U-shaped plate, a movable plate is fixedly connected to the side of the U-shaped plate near the base, a movable groove is provided on the side of the base near the movable plate, the movable plate is slidably disposed in the movable groove, the U-shaped plate and the base are fixedly connected by a second electric push rod, a screw is threadedly connected to the top of the U-shaped plate, and a clamping plate is provided at the bottom end of the screw.

[0013] Furthermore, the positioning assembly includes a pair of positioning rods, which are threaded to the outer sides of the two side plates respectively, with one end of each positioning rod passing through the side plate.

[0014] The above-described method for using the CT-guided intelligent precision puncture assistive stent includes the following steps:

[0015] S1. In use, connect the base to the CT machine through the connecting component, place the sampling box on the platform, and position and fix the sampling box through the positioning component. Then, lock the tail end of the puncture needle into the holder, which is a U-shaped card plate made of plastic. The outside of the puncture needle rests on the pad. Adjust the position of the arc frame by adjusting the component to adjust the position of the plane of the puncture needle above. The arc plate can be driven by the adjusting component to drive the rotating shaft, connecting plate, support plate and the puncture needle above to move. The arc frame and arc plate are both at least a quarter of a circle, which can ensure that a circular motion is formed in the 90-180 degree angle. After the puncture needle is adjusted to the appropriate angle;

[0016] S2. Start the first motor to drive the rotating shaft, connecting plate, support platform and the puncture needle above to rotate and make fine adjustments to the angle to meet the needs of use. After the adjustment is completed, start the first electric push rod to shorten it and drive the card seat and fixed puncture needle to move, so that the puncture needle moves towards the human body and inserts into the human body to perform puncture sampling in conjunction with the picture displayed by the CT machine.

[0017] S3. After sampling is completed, the first electric push rod is activated to extend it, and vice versa, the puncture needle is removed from the body. After the puncture needle is removed from the body, when the cassette is reset, the first electric push rod drives the cassette to continue moving a distance. At this time, the limiting component cancels the limitation on the moving shaft. Under the action of gravity, the stage rotates downward in the positive direction and finally reaches a horizontal state. Since the center of gravity of the stage is concentrated in the middle of its bottom end, the stage can rotate to a horizontal state. When the stage rotates to a horizontal state, culture medium is added to the sampling box inside the stage through the liquid supply component. Then, the puncture needle is pressed to place the obtained pathological tissue into the sampling box below, thus obtaining the pathological tissue.

[0018] S4. Then, the first electric push rod is reset, and the card seat is reset. At this time, the limiting component limits the movable shaft again, preventing it from rotating in the forward direction. Then, the arc plate is reset by adjusting the component, and finally the support plate is reset. During the reset of the support plate, due to the effect of gravity, the stage and the sampling box rotate in opposite directions to maintain a horizontal state. After the support plate is reset, the positioning component can be canceled to position the sampling box, and the sampling box can be taken out to obtain the pathological tissue. In the whole process, as the puncture needle leaves the human body, the sampling box can be automatically positioned below it, and culture medium is injected to remove the pathological tissue from the puncture needle. The whole removal process is simple to operate, short, and unlikely to cause the pathological tissue to fall out of the puncture needle into the outside, ensuring the smooth acquisition of the pathological tissue.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. This invention can achieve the acquisition of pathological tissues. During the entire process, as the puncture needle leaves the human body, the sampling box is automatically positioned below it, and culture medium is injected to remove the pathological tissue from the puncture needle. The entire extraction process is simple and short, and it is not easy for the pathological tissue to fall out of the puncture needle into the outside world, thus ensuring the successful acquisition of pathological tissues.

[0021] 2. In this invention, while the sampling box rotates with the stage and is located below the puncture needle, the rubber pad of the ring plate can contact the inner side of the side plate, so that there is friction between them. At this time, when the stage rotates downward, it can rotate slowly, so that it can reach a horizontal state more quickly, avoiding the stage from swinging continuously due to inertia and failing to reach a horizontal state quickly. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of the CT-guided intelligent precision puncture assist stent according to an embodiment of the present invention is shown;

[0023] Figure 2 An exploded structural diagram of a CT-guided intelligent precision puncture assistive stent according to an embodiment of the present invention is shown.

[0024] Figure 3 A schematic diagram of a portion of the structure of an embodiment of the present invention is shown. Figure 1 ;

[0025] Figure 4 A schematic diagram of a portion of the structure of an embodiment of the present invention is shown. Figure 2 ;

[0026] Figure 5 An embodiment of the present invention is shown. Figure 4 Enlarged structural diagram at point A in the middle;

[0027] In the diagram: 1. Base; 2. Arc-shaped frame; 3. Arc-shaped plate; 4. Connecting plate; 5. Support plate; 6. First motor; 7. Gasket; 8. First electric push rod; 9. Card seat; 10. Side plate; 11. Ratchet; 12. Pawl; 13. Pull rope; 14. Limiting rod; 15. Long plate; 16. Ring plate; 17. L-shaped block; 18. Channel; 19. Storage box; 20. Pump body; 21. Gear; 22. Tooth groove; 23. Second motor; 24. Arc-shaped guide rail; 25. Carrier plate; 26. Third motor; 27. Fixed plate; 28. U-shaped plate; 29. ​​Movable plate; 30. Second electric push rod; 31. Screw; 32. Positioning rod; 33. Platform. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0029] This invention provides a CT-guided intelligent precision puncture assist stent, such as... Figures 1 to 5 As shown, the device includes a base 1, with a connecting assembly on the rear side for connecting it to a CT scanner. An arc-shaped frame 2 is connected to the top of the base 1 via an adjusting assembly. An arc-shaped plate 3 is slidably mounted inside the arc-shaped frame 2. An adjusting assembly for adjusting the position of the arc-shaped plate 3 is located on the outside of the arc-shaped frame 2. An installation opening is provided at the top of the arc-shaped plate 3, and a rotating shaft is rotatably mounted within the installation opening. A connecting plate 4 is fixedly sleeved on the outside of the rotating shaft. A support plate 5 is fixedly connected to the top of the connecting plate 4. A first motor 6 is fixedly connected to the outside of the arc-shaped plate 3. The first motor 6... One end of the output shaft is fixedly connected to one end of the rotating shaft. A gasket 7 is fixedly connected to the top of the support plate 5. A card seat 9 is fixedly connected to the rear side of the support plate 5 through the first electric push rod 8. Movable shafts are rotatably installed on both sides of the support plate 5. Side plates 10 are fixedly connected to the outer ends of the movable shafts. A stage 33 is fixedly connected between the two side plates 10. A limiting component for limiting the movable shaft is provided on the outside of the support plate 5. A positioning component for positioning the sampling box placed in the stage 33 is provided on the side plate 10. A liquid supply component for providing culture medium is provided on the support plate 5.

[0030] In use, the base 1 is connected to the CT scanner via the connecting assembly. The sampling box is placed on the stage 33 and positioned and fixed by the positioning assembly. The tail end of the puncture needle is then secured to the holder 9, which is a U-shaped plastic plate. The outside of the puncture needle rests on the pad 7. The position of the arc frame 2 is adjusted by the adjusting assembly to adjust the position of the upper puncture needle plane. The arc plate 3 is driven by the adjusting assembly, which in turn moves the rotating shaft, connecting plate 4, support plate 5, and the upper puncture needle. Both the arc frame 2 and the arc plate 3 are at least a quarter of a circle, ensuring an angle of 90-180 degrees. The system forms a circular motion. After the puncture needle is adjusted to the appropriate angle, the first motor 6 is started to drive the rotating shaft, connecting plate 4, support plate 5, and the puncture needle above to rotate for fine-tuning of the angle to meet the usage requirements. After adjustment, the first electric push rod 8 is started to shorten it, causing the holder 9 and the fixed puncture needle to move accordingly, so that the puncture needle moves towards the human body and punctures the human body to perform puncture sampling in conjunction with the image displayed on the CT machine. After sampling is completed, the first electric push rod 8 is started to extend it, and vice versa, so that the puncture needle can be removed from the human body. After the puncture needle is removed from the human body, when the holder 9 returns to its original position, the first electric push rod 8 drives the holder 9 to continue moving for a short distance. At this point, the limiting component releases its restriction on the movable axis. Under the influence of gravity, the stage 33 rotates downwards and eventually reaches a horizontal position. Since the center of gravity of the stage 33 is concentrated in the middle of its bottom end, the stage 33 can rotate to a horizontal position. When the stage 33 rotates to a horizontal position, culture medium is added to the sampling box inside the stage 33 through the liquid supply component. Then, the puncture needle is pressed to place the obtained pathological tissue into the sampling box below, thus obtaining the pathological tissue. Then, the first electric push rod 8 and the cassette 9 are reset. At this time, the limiting component again limits the movable axis, preventing it from rotating forward. Then, the component drive is adjusted. The arc plate 3 is reset, ultimately achieving the reset of the support plate 5. During the reset of the support plate 5, due to gravity, the stage 33 and the sampling box rotate in opposite directions to maintain a horizontal state. After the support plate 5 is reset, the positioning component can be removed from the sampling box, allowing the sampling box to be taken out and the pathological tissue to be obtained. Throughout the process, as the puncture needle leaves the human body, the sampling box is automatically positioned below it, and culture medium is injected to remove the pathological tissue from the puncture needle. The entire removal process is simple to operate, short, and unlikely to result in the pathological tissue falling out of the puncture needle into the outside world, ensuring the successful acquisition of the pathological tissue.

[0031] like Figure 3As shown, the limiting assembly includes a ratchet 11. One end of a movable shaft on one side extends to the outside of the side plate 10 and is fixedly connected to the ratchet 11. A round shaft is rotatably mounted on the side of the support plate 5 near the ratchet 11. A pawl 12 that cooperates with the ratchet 11 is fixedly connected to the end of the round shaft away from the support plate 5. A torsion spring is sleeved on the outside of the round shaft. The two ends of the torsion spring are fixedly connected to the round shaft and the support plate 5 respectively. A crossbar is fixedly connected to the outside of the card seat 9. A connecting block is fixedly connected to the top of the pawl 12. The connecting block and the crossbar are connected by a pull rope 13.

[0032] The ratchet 11 and pawl 12 work together to restrict the movable shaft from rotating downwards, preventing it from contacting the puncture needle during downward puncture sampling. When the chuck 9 resets, the continued movement of the first electric push rod 8 pulls the taut rope 13, causing it to rotate. This pulls the connecting block and pawl 12, causing the pawl 12 to separate from the ratchet 11. Simultaneously, the rotation of the pawl 12 drives the circular shaft to rotate, stretching the torsion spring and generating force. At this point, the movable shaft can... When rotating downwards, due to gravity, the platform 33 and the sampling box rotate downwards and forwards, eventually reaching a horizontal state. When the first electric push rod 8 drives the card holder 9 to reset, the torsion spring releases its force, causing the round shaft and pawl 12 to rotate and reset, engaging with the ratchet 11 again. At this time, the movable shaft cannot rotate downwards in the forward direction. As the support plate 5 resets, under the action of gravity, the platform 33, the sampling box, and the side plate 10 rotate in the opposite direction, so that the platform 33 and the sampling box can synchronously reverse and reset while the support plate 5 resets, and maintain a horizontal state.

[0033] like Figures 4 to 5 As shown, a limiting rod 14 is fixedly connected to the side of the support plate 5 near the pawl 12. The limiting rod 14 has a T-shaped cross-section. A long plate 15 is slidably sleeved on the outside of the limiting rod 14. A ring plate 16 is fixedly connected to the end of the long plate 15 near the side plate 10. The ring plate 16 is sleeved on the outside of the movable shaft. A rubber pad is provided on the side of the ring plate 16 near the side plate 10. An L-shaped block 17 is fixedly connected to the end of the long plate 15 away from the ring plate 16. The top of the L-shaped block 17 has an arc surface facing the support plate 5. The arc surface cooperates with the tail of the pawl 12. A spring is sleeved on the outside of the limiting rod 14.

[0034] When the pawl 12 rotates and separates from the ratchet 11, the tail of the pawl 12 presses against the arc surface, causing the L-shaped block 17, the long plate 15, and the ring plate 16 to move away from the support plate 5. At the same time, the long plate 15 compresses the spring, causing it to deform and generate force, so that the rubber pad of the ring plate 16 contacts the inner side of the side plate 10, creating friction between them. At this time, when the platform 33 rotates downward, it can rotate slowly, allowing it to approach a horizontal state more quickly. This prevents the platform 33 from constantly swaying due to inertia and failing to approach a horizontal state quickly. When the pawl 12 returns to its original position, it separates from the L-shaped block 17. The deformed spring releases its force, causing the long plate 15 and the ring plate 16 to return to their original positions, separating the rubber pad from the side plate 10. This ensures that the subsequent reversal of the platform 33 and the side plate 10 is not affected by the rubber pad.

[0035] like Figures 1 to 3 As shown, the liquid supply assembly includes a channel 18 that is opened in the middle of the support plate 5 and passes through the support plate 5. A storage box 19 is fixedly connected to the outside of the arc frame 2. The storage box 19 is filled with culture medium. A liquid addition pipe is provided on the upper part of the outside of the storage box 19 and communicates with it. A pump body 20 is provided on the top of the storage box 19. The water pumping end of the pump body 20 is connected to the inside of the storage box 19 through a connecting pipe. The water delivery end of the pump body 20 is connected to the end of the channel 18 away from the platform 33 through a hose.

[0036] The pump body 20 is started to draw out the culture medium in the storage tank 19 through the connecting pipe and inject it into the channel 18 through the hose, and then into the sampling box to realize the injection of culture medium.

[0037] like Figure 2 As shown, the adjustment assembly includes a housing, which is fixedly connected to the upper inner side of the arc frame 2. The housing is connected to the interior of the arc frame 2. A horizontal shaft is rotatably installed inside the housing. A gear 21 is fixedly sleeved on the outside of the horizontal shaft. A toothed groove 22 that mates with the gear 21 is provided on the inner side of the arc plate 3. A second motor 23 is fixedly connected to the outside of the housing. One end of the output shaft of the second motor 23 is fixedly connected to one end of the horizontal shaft.

[0038] The second motor 23 is started to make its output shaft rotate forward, which drives the gear 21 to rotate and engages with the tooth groove 22 to move the arc plate 3 outward from the arc frame 2. Conversely, the second motor 23 is started to make its output shaft rotate in reverse, which can make the arc plate 3 retract into the arc frame 2.

[0039] like Figure 1 As shown, the adjustment assembly includes an arc-shaped guide rail 24 fixedly connected to the top of the base 1, a slide plate is slidably mounted on the outside of the arc-shaped guide rail 24, a carrier plate 25 is fixedly connected to the top of the slide plate by a support rod, an arc-shaped frame 2 is fixedly connected to the top of the carrier plate 25, a groove is provided on the top of the base 1, a third motor 26 is fixedly connected in the groove, and the output shaft of the third motor 26 is fixedly connected to the slide plate by a fixing plate 27.

[0040] The third motor 26 is started, causing its output shaft to rotate forward, driving the fixed plate 27, slide plate, support rod, carrier plate 25 and arc frame 2 to move along the arc guide rail 24, so that the position of the arc frame 2 can be adjusted in the plane, thereby adjusting the position of the puncture needle.

[0041] like Figure 1 As shown, the connecting assembly includes a U-shaped plate 28. A movable plate 29 is fixedly connected to the side of the U-shaped plate 28 near the base 1. A movable groove is provided on the side of the base 1 near the movable plate 29. The movable plate 29 is slidably disposed in the movable groove. The U-shaped plate 28 and the base 1 are fixedly connected by a second electric push rod 30. A screw rod 31 is threadedly connected to the top of the U-shaped plate 28. A clamping plate is provided at the bottom end of the screw rod 31.

[0042] The U-shaped plate 28 can be clamped at the edge of the CT machine. Rotating the screw 31 causes it to descend, which in turn moves the clamping plate to clamp the CT machine and connect the entire support. Activating the second electric push rod 30 causes it to extend and move the base 1 horizontally, which can adjust the position of the puncture needle above.

[0043] like Figure 3 As shown, the positioning assembly includes a pair of positioning rods 32, which are threaded to the outer sides of the two side plates 10 respectively, and one end of the positioning rod 32 passes through the side plate 10.

[0044] Rotating the two positioning rods 32 in the forward direction brings them closer together, causing the outside of the positioning rods 32 to fit against the top of the sampling box, thus restricting and fixing the sampling box. Rotating the two positioning rods 32 in the reverse direction separates them, thus canceling the positioning of the sampling box.

[0045] The above-mentioned method for using the CT-guided intelligent precision puncture-assisted stent includes the following steps:

[0046] S1. In use, connect the base 1 to the CT machine through the connecting component, place the sampling box on the stage 33, and position and fix the sampling box through the positioning component. The tail end of the puncture needle is locked in the card holder 9, which is a U-shaped card plate made of plastic. The outside of the puncture needle rests on the pad 7. The position of the arc frame 2 is adjusted by the adjustment component to adjust the position of the plane of the puncture needle above. The arc plate 3 can be driven by the adjustment component to drive the rotating shaft, connecting plate 4, support plate 5 and the puncture needle above to move. The arc frame 2 and the arc plate 3 are both at least a quarter of a circle, which can ensure that a circular motion is formed in the angle of 90-180 degrees. The puncture needle is adjusted to the appropriate angle.

[0047] S2. Start the first motor 6 to drive the rotating shaft, connecting plate 4, support plate 5 and the puncture needle above to rotate and make fine adjustments to the angle to meet the needs of use. After the adjustment is completed, start the first electric push rod 8 to shorten it and drive the card seat 9 and the fixed puncture needle to move, so that the puncture needle moves towards the human body and punctures the human body to perform puncture sampling in conjunction with the picture displayed by the CT machine.

[0048] S3. After sampling is completed, the first electric push rod 8 is activated to extend it, and vice versa, the puncture needle can be removed from the human body. After the puncture needle is removed from the human body, when the cassette 9 is reset, the first electric push rod 8 drives the cassette 9 to continue moving a distance. At this time, the limiting component cancels the limitation on the moving shaft. Under the action of gravity, the stage 33 rotates downward in the forward direction and finally reaches a horizontal state. Since the center of gravity of the stage 33 is concentrated in the middle of its bottom end, the stage 33 can rotate to a horizontal state. When the stage 33 rotates to a horizontal state, culture medium is added to the sampling box inside the stage 33 through the liquid supply component. Then, the puncture needle is pressed to place the obtained pathological tissue into the sampling box below, thereby obtaining the pathological tissue.

[0049] S4. Then, the first electric push rod 8 and the card holder 9 are reset. At this time, the limiting component limits the movable shaft again, preventing it from rotating in the forward direction. Then, the arc plate 3 is driven to reset by the adjustment component, and finally the support plate 5 is reset. During the reset of the support plate 5, due to the effect of gravity, the stage 33 and the sampling box rotate in opposite directions to maintain a horizontal state. After the support plate 5 is reset, the positioning component can be canceled to position the sampling box, and the sampling box can be taken out to obtain the pathological tissue. In the whole process, while the puncture needle leaves the human body, the sampling box can be automatically positioned below it, and culture medium is injected to remove the pathological tissue from the puncture needle. The whole removal process is simple to operate, short, and unlikely to cause the pathological tissue to fall out of the puncture needle and into the outside world, ensuring the smooth acquisition of the pathological tissue.

[0050] Working principle: In use, the base 1 is connected to the CT machine via the connecting assembly. The sampling box is placed on the stage 33. The two positioning rods 32 are rotated forward to move them closer to each other, so that the outside of the positioning rods 32 fits against the top of the sampling box, which can restrict and fix the sampling box. The tail end of the puncture needle is locked in the holder 9, which is a U-shaped plate made of plastic. The outside of the puncture needle rests on the pad 7. The third motor 26 is started, and its output shaft rotates forward, driving the fixing plate 27, the sliding plate, the support rod, the stage 25, and the arc frame 2 to move along the arc guide rail 24. This allows the position of the arc frame 2 to be adjusted in the plane, thereby adjusting the position of the puncture needle. The second motor 23 is started, and its output shaft rotates forward, driving the gear 21 to rotate and engage with the tooth groove 22 to move the arc plate. 3. Subsequently, the arc-shaped frame 2 moves outward, and the arc-shaped plate 3 drives the rotating shaft, connecting plate 4, support plate 5, and the puncture needle above to move accordingly. The arc-shaped frame 2 and the arc-shaped plate 3 are both at least a quarter of a circle, which can ensure that a circular motion is formed at an angle of 90-180 degrees. After the puncture needle is adjusted to a suitable angle, the first motor 6 is started to drive the rotating shaft, connecting plate 4, support plate 5, and the puncture needle above to rotate for fine-tuning of the angle to meet the usage requirements. After the adjustment is completed, the first electric push rod 8 is started to shorten it, which drives the card seat 9 and the fixed puncture needle to move accordingly, so that the puncture needle moves towards the human body and inserts into the human body to perform puncture sampling in conjunction with the image displayed by the CT machine. The ratchet 11 and the pawl 12 can restrict the moving shaft to prevent it from rotating downward in the forward direction. The movement ensures that during puncture sampling with the needle pointing downwards, the platform 33 and the sampling box do not contact the needle. After sampling, the first electric push rod 8 is activated to extend it; conversely, it allows the needle to leave the body. After the needle leaves the body, when the retainer 9 returns to its original position, the first electric push rod 8 drives the retainer 9 to continue moving a certain distance, causing the taut pull rope 13 to move accordingly. This pulls the connecting block and pawl 12 to rotate, causing the pawl 12 to separate from the ratchet 11. Simultaneously, the rotation of the pawl 12 drives the circular shaft to rotate, pulling the torsion spring and causing it to deform, generating force. At this time, the movable shaft can rotate downwards. Due to gravity, the platform 33 and the sampling box rotate downwards, eventually reaching a horizontal state. Since the center of gravity of the platform 33 is concentrated at its bottom... Therefore, the stage 33 can rotate to a horizontal position. When the stage 33 rotates to a horizontal position, the pump body 20 is activated to draw the culture medium from the storage tank 19 through the connecting pipe and inject it into the channel 18 through the tubing, and then into the sampling box, thus injecting the culture medium. Then, the puncture needle is pressed to place the obtained pathological tissue into the sampling box below, thus obtaining the pathological tissue. Then, the first electric push rod 8 and the clasp 9 are reset. At this time, the torsion spring releases its force to drive the round shaft and pawl 12 to rotate and reset, and engage with the ratchet 11 again. At this time, the movable shaft cannot rotate downwards in the forward direction. Then, the second motor 23 is activated to reverse its output shaft, so that the arc plate 3 can be retracted into the arc frame 2, and finally the support plate 5 is reset. During the reset process of the support plate 5,Due to gravity, the stage 33 and the sampling box rotate in opposite directions to maintain a horizontal state. After the support plate 5 is reset, the two positioning rods 32 are rotated in the opposite direction to separate them, canceling the positioning of the sampling box and removing it to obtain the pathological tissue. Throughout the process, as the puncture needle leaves the body, the sampling box is automatically positioned below it, and culture medium is injected to remove the pathological tissue from the puncture needle. The entire removal process is simple and short, and it is unlikely that the pathological tissue will fall out of the puncture needle and into the outside world, ensuring the smooth acquisition of the pathological tissue. When the pawl 12 rotates and separates from the ratchet 11, the tail of the pawl 12 presses the arc surface, causing the L-shaped block 17 and the long... Plate 15 and ring plate 16 move away from support plate 5. Simultaneously, the long plate 15 compresses the spring, causing it to deform and generate force. This causes the rubber pad of ring plate 16 to contact the inner side of side plate 10, creating friction. At this time, the platform 33 rotates downwards slowly, allowing it to reach a horizontal position more quickly and preventing continuous swaying due to inertia. When pawl 12 resets, it disengages from L-shaped block 17. The released force of the deformed spring then resets the long plate 15 and ring plate 16, separating the rubber pad from side plate 10. This ensures that subsequent reversals of platform 33 and side plate 10 are unaffected by the rubber pad.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A CT-guided intelligent precise puncture auxiliary support bracket, comprising a base (1), characterized in that: The base (1) has a connecting assembly for connecting it to a CT scanner on its rear side. An arc frame (2) is connected to the top of the base (1) via an adjustment assembly. An arc plate (3) is slidably installed inside the arc frame (2). An adjustment assembly for adjusting the position of the arc plate (3) is provided on the outside of the arc frame (2). An installation port is provided on the top of the arc plate (3). A rotating shaft is rotatably installed in the installation port. A connecting plate (4) is fixedly sleeved on the outside of the rotating shaft. A support plate (5) is fixedly connected to the top of the connecting plate (4). A first motor (6) is fixedly connected to the outside of the arc plate (3). The output shaft of the first motor (6) One end is fixedly connected to the other end of the rotating shaft. A gasket (7) is fixedly connected to the top of the support plate (5). A card seat (9) is fixedly connected to the rear side of the support plate (5) through the first electric push rod (8). Movable shafts are rotatably installed on both sides of the support plate (5). A side plate (10) is fixedly connected to the outer end of the movable shaft. A platform (33) is fixedly connected between the two side plates (10). A limiting component for limiting the movable shaft is provided on the outside of the support plate (5). A positioning component for positioning the sampling box placed in the platform (33) is provided on the side plate (10). A liquid supply component for providing culture medium is provided on the support plate (5). The support plate (5) is fixedly connected to a limiting rod (14) on the side near the pawl (12). The limiting rod (14) has a T-shaped cross section. A long plate (15) is slidably sleeved on the outside of the limiting rod (14). A ring plate (16) is fixedly connected to one end of the long plate (15) near the side plate (10). The ring plate (16) is sleeved on the outside of the movable shaft. A rubber pad is provided on the side of the ring plate (16) near the side plate (10). An L-shaped block (17) is fixedly connected to one end of the long plate (15) away from the ring plate (16). The top of the L-shaped block (17) is provided with an arc surface facing the support plate (5). The arc surface cooperates with the tail of the pawl (12). A spring is sleeved on the outside of the limiting rod (14). The limiting assembly includes a ratchet (11), one end of the movable shaft on one side extends to the outside of the side plate (10) and is fixedly connected to the ratchet (11), a round shaft is rotatably mounted on the side of the support plate (5) near the ratchet (11), a pawl (12) cooperating with the ratchet (11) is fixedly connected to the end of the round shaft away from the support plate (5), a torsion spring is sleeved on the outside of the round shaft, the two ends of the torsion spring are fixedly connected to the round shaft and the support plate (5) respectively, a crossbar is fixedly connected to the outside of the card seat (9), a connecting block is fixedly connected to the top of the pawl (12), and the connecting block is connected to the crossbar by a pull rope (13).

2. The CT-guided intelligent precision puncture auxiliary stent according to claim 1 is characterized in that: The liquid supply assembly includes a channel (18) opened in the middle of the support plate (5) and passing through the support plate (5). A storage box (19) is fixedly connected to the outside of the arc frame (2). A pump body (20) is provided on the top of the storage box (19). The pumping end of the pump body (20) is connected to the inside of the storage box (19) through a connecting pipe. The water delivery end of the pump body (20) is connected to the end of the channel (18) away from the platform (33) through a hose.

3. The CT-guided intelligent precision puncture assist stent according to claim 2, characterized in that: The adjustment assembly includes a housing, which is fixedly connected to the upper inner side of the arc frame (2). The housing is connected to the interior of the arc frame (2). A horizontal shaft is rotatably installed inside the housing. A gear (21) is fixedly sleeved on the outside of the horizontal shaft. A tooth groove (22) that mates with the gear (21) is provided on the inner side of the arc plate (3). A second motor (23) is fixedly connected to the outside of the housing. One end of the output shaft of the second motor (23) is fixedly connected to one end of the horizontal shaft.

4. The CT-guided intelligent precision puncture auxiliary stent according to claim 3, characterized in that: The adjustment assembly includes an arc-shaped guide rail (24) fixedly connected to the top of the base (1). A slide plate is slidably fitted on the outside of the arc-shaped guide rail (24). A carrier plate (25) is fixedly connected to the top of the slide plate by a support rod. An arc-shaped frame (2) is fixedly connected to the top of the carrier plate (25). A groove is provided on the top of the base (1). A third motor (26) is fixedly connected in the groove. The output shaft of the third motor (26) is fixedly connected to the slide plate by a fixing plate (27).

5. The CT-guided intelligent precision puncture auxiliary stent according to claim 4, characterized in that: The connecting assembly includes a U-shaped plate (28), a movable plate (29) is fixedly connected to the side of the U-shaped plate (28) near the base (1), the base (1) has a movable groove on the side near the movable plate (29), the movable plate (29) is slidably disposed in the movable groove, the U-shaped plate (28) and the base (1) are fixedly connected by a second electric push rod (30), the top of the U-shaped plate (28) is threaded with a screw rod (31), and the bottom end of the screw rod (31) is provided with a clamping plate.

6. The CT-guided intelligent precision puncture assist stent according to claim 5, characterized in that: The positioning assembly includes a pair of positioning rods (32), which are threaded to the outside of two side plates (10), with one end of each positioning rod (32) passing through the side plate (10).

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