Rotary sampler for tissue examination puncture in liver disease department

Abstract

The invention is applicable to the technical field of medical apparatus and instruments, and provides a rotary sampler for tissue examination puncture in the hepatopathy department, the rotary sampler comprises a fixing frame, and a fixing plate is fixed at the bottom of the fixing frame; the U-shaped frame is mounted on the fixed plate; the adjusting block is arranged in the U-shaped frame in a sliding mode, the adjusting block is arranged at the top of a movable block, and the movable block is rotationally arranged at the bottom of the adjusting block. The rotary sampler for tissue examination puncture in the hepatopathy department solves the problems that in a traditional puncture sampling mode, in traditional Chinese medicine growth time, handheld sampling equipment is prone to shaking, the sampler shakes, bleeding in the body of a patient is caused, and the medical exposure risk is high, meanwhile, the sampling depth can be limited, and the sampling efficiency is improved. By arranging the negative pressure structure, the sample can be adsorbed, the problem that the sample is easy to fall off is solved, and the stability of the sample is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a rotating sampler for tissue examination and puncture in hepatology. BACKGROUND

[0002] The liver is the largest digestive gland in the human body and is the center of material and energy metabolism in the body. It is estimated that there are more than 500 chemical reactions occurring in the liver. First, it secretes bile to help digest food, synthesizes amino acids into proteins to provide energy for the body, and enables us to work energetically throughout the day. It can store and burn body fat to control our body shape. It is a storage organ for fat-soluble vitamins. It can also oxidize, reduce and decompose toxins in the body, phagocytize bacteria accidentally ingested into the body, and is the largest detoxification organ in the human body. Experiments have shown that animals can survive for more than 50 hours even after complete removal of the liver and appropriate treatment, which shows that the liver is an essential and important organ for maintaining life activities.

[0003] The conventional rotating sampler for tissue examination and puncture in hepatology needs to be manually held for operation. During the operation, the doctor's hand needs to be kept in a posture for a long time so that the device can stably enter the patient's body for sampling. Not only is it difficult to grasp the sampling depth, but there is also a risk of medical exposure. At the same time, when the sampler is withdrawn after sampling is completed, the sample inside the sampler is easy to fall off. SUMMARY

[0004] The present application provides a rotating sampler for tissue examination and puncture in hepatology, which aims to solve the problem of manual operation of the hepatology tissue sampler, which is difficult to grasp the sampling depth and has a risk of medical exposure, and the sample inside the sampler is easy to fall off when the sampler is withdrawn after sampling is completed.

[0005] In order to solve the above problems, the application is realized as follows: a rotating sampler for biopsy in a liver department, comprising a fixing frame, a fixing plate fixed to the bottom of the fixing frame, a U-shaped frame installed on the fixing plate, an adjusting block slidingly installed in the U-shaped frame, an active block rotatably installed at the bottom of the adjusting block, a needle cylinder structure for obtaining pathological samples of liver, which is detachably installed on the active block, a first electric telescopic rod hingedly connected to the fixing frame for adjusting the position of the adjusting block, a connecting block flange-mounted on the output rod of the first electric telescopic rod, a connecting rod hingedly connected to the adjusting block for transmitting the pushing force, an elbow lever hingedly connected to the U-shaped frame and arranged on the connecting block for limiting the movement of the adjusting block to limit the sampling depth, a negative pressure structure arranged on the first electric telescopic rod and connected to the adjusting block for generating negative pressure to adsorb the samples to prevent them from falling off, and a supporting structure detachably installed on the fixing frame for supporting the sampler.

[0006] Preferably, the needle cylinder structure comprises an installation block slidingly installed in the active block, an outer shell detachably installed on the installation block through fixing bolts, an adjusting ring slidingly installed in the outer shell, an outer needle cylinder detachably installed in the adjusting ring, an inner needle cylinder movably installed in the outer needle cylinder, and a limiting block fixed to the top of the inner needle cylinder and in contact with the top of the adjusting block.

[0007] Preferably, the outer needle cylinder is provided with a protrusion which can be clamped in the adjusting ring, the active block is provided with a limiting groove, the limiting groove is fixed with a sliding block connected to the installation block, the inner needle cylinder is provided with a groove, the inner wall of the outer needle cylinder is fixed with a cutting knife located in the groove, and the adjusting block is provided with a driving structure for driving the outer needle cylinder to rotate to drive the cutting knife to rotate and cut the samples.

[0008] Preferably, the adjusting block is composed of a moving piece slidingly installed in the U-shaped frame and a connecting piece detachably installed on the moving piece through connecting bolts, a sealing ring is arranged between the moving piece and the connecting piece for preventing air leakage, the driving structure comprises a mounting frame installed on the connecting piece, a motor installed on the mounting frame, an output shaft of the motor rotatably connected to the mounting frame, and a third gear respectively installed on the output shaft of the motor and the active block, the two third gears are engaged for transmission.

[0009] Preferably, the negative pressure structure comprises a fixed cylinder fixed on the first electric telescopic rod, a piston plate movably installed in the fixed cylinder, an adjusting rod installed on the piston plate and extending out of the fixed cylinder, a fixed rod welded between the adjusting rod and the connecting block, a tee joint installed on the fixed cylinder, an operating block fixed on the tee joint, a threaded block fixed on the operating block, an air channel arranged in the adjusting block and communicating with the inner needle cylinder, the threaded block being threadedly installed in the air channel, the adjusting block being provided with a blocking plate in contact with the outer wall of the adjusting block, and an electric adjusting valve arranged on the tee joint for adjusting the air flow direction.

[0010] Preferably, the shell is provided with a pressure sensor in contact with the adjusting ring for starting the negative pressure adsorption program, and the pressure sensor is provided with an elastic silica gel protective sleeve for protecting the pressure sensor.

[0011] Preferably, the support structure comprises a connecting frame detachably installed on the fixed frame, a support frame fixed on the connecting frame, a clamping plate clamped on the hospital bed, a support plate fixed on the clamping plate for stabilizing the clamping plate, an adjusting frame slidably installed on the support plate, a support cylinder installed on the top of the adjusting frame, and a second electric telescopic rod fixed in the support cylinder for adjusting the height of the equipment to assist sampling, and the support frame flange is installed on the output rod of the second electric telescopic rod.

[0012] Preferably, a guide frame is slidably installed on the support cylinder, a support rod is installed on the guide frame and connected with the support frame, a threaded rod is threadedly installed on the clamping plate, a clamping plate is rotatably installed on the threaded rod for resisting the hospital bed to stabilize the puncture equipment, an anti-skid pad is fixed on the clamping plate for increasing the contact friction, and a clamping piece is arranged on the adjusting frame for stabilizing the adjusting frame.

[0013] Preferably, the clamping piece comprises a protective shell installed on the adjusting frame, a spring installed in the protective shell, a clamping block fixed on the spring, a guide rod installed on the clamping block and extending out of the protective shell, a connecting rope fixed on the guide rod, and a pinch piece fixed on the connecting rope for providing an operation gripping point, and the support plate is provided with a group of notches for accommodating the clamping block.

[0014] Preferably, a guide block is slidably connected with the U-shaped frame and fixed on the adjusting block, a clamping groove is arranged on the support cylinder, an extension block is installed on the guide frame and extends into the clamping groove, a limiting screw is threadedly installed on the adjusting block, a clamping hole is arranged on the limiting block for accommodating the limiting screw, and a sealing gasket is fixed on the top of the limiting block for preventing air leakage.

[0015] Compared with the related art, the rotating sampler for tissue examination and puncture in the department of liver diseases has the following beneficial effects: Compared with the prior art, the rotating sampler for tissue examination and puncture in the department of liver diseases has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view structural schematic diagram of a rotating sampler for tissue examination and puncture in the department of liver diseases provided by the present application; Figure 2 is an assembly front view structural schematic diagram of the adjusting block, the outer needle cylinder and the inner needle cylinder in the present application; Figure 3 is a front view structural schematic diagram of a fixed cylinder in the present application; Figure 4 is a top view structural schematic diagram of a fixed frame in the present application; Figure 5 is a top view structural schematic diagram of an arc-shaped plate in the present application; Figure 6 is a three-dimensional structural schematic diagram of a limiting block in the present application; Figure 7 is Figure 1 is an enlarged structural schematic diagram of part A shown in the present application; Figure 8 is Figure 1 is an enlarged structural schematic diagram of part B shown in the present application; Figure 9 is Figure 1 is an enlarged structural schematic diagram of part C shown in the present application; Figure 10 is Figure 2 is an enlarged structural schematic diagram of part D shown in the present application Figure 11 is Figure 10 is an enlarged structural schematic diagram of part E shown in the present application; Figure 12 is Figure 2 is an enlarged structural schematic diagram of part F shown in the present application; Figure 13 is a three-dimensional structural schematic diagram of a rack in the present application; Figure 14 is an assembly sectional view structural schematic diagram of the U-shaped frame and the adjusting block in the present application; Figure 15It is a sectional view structure schematic diagram of the clamping piece in the application.

[0017] Label: 1, fixed frame; 2, fixed plate; 3, U-shaped frame; 4, adjusting block; 5, first electric telescopic rod; 6, connecting block; 7, connecting rod; 8, elbow lever; 9, movable block; 10, mounting block; 11, shell; 12, fixing bolt; 13, adjusting ring; 14, pressure sensor; 15, outer needle cylinder; 16, protruding block; 17, inner needle cylinder; 18, limiting groove; 19, sliding block; 20, limiting block; 21, airway; 22, threaded block; 23, operation block; 24, blanking plate; 25, tee; 26, fixed cylinder; 27, piston plate; 28, adjusting rod; 29, electric regulating valve; 30, rotating shaft; 31, arc plate; 32, transmission shaft; 33, chain wheel; 34, chain; 35, first gear; 36, bevel gear; 37, second gear; 38, rack; 39, supporting block; 40, guide groove; 41, mounting frame; 42, motor; 43, third gear; 44, limiting bolt; 45, bayonet; 46, sealing gasket; 47, groove; 48, cutting knife; 49, heating wire; 50, connecting frame; 51, clamping plate; 52, supporting plate; 53, adjusting frame; 54, supporting cylinder; 55, second electric telescopic rod; 56, supporting frame; 57, guide frame; 58, supporting rod; 59, threaded rod; 60, clamping plate; 61, non-slip pad; 62, clamping piece; 63, protective shell; 64, spring; 65, clamping block; 66, guide rod; 67, connecting rope; 68, pinch piece; 69, guide block; 70, notch group; 71, clamping groove; 72, LED lamp panel. DETAILED DESCRIPTION

[0018] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0019] The embodiment of the application provides a rotating sampler for tissue examination and puncture in a liver department, like Figures 1-15As shown, the rotating sampler for biopsy puncture of the hepatopathy department includes a fixed frame 1, the bottom of which is fixed with a fixed plate 2; a U-shaped frame 3 installed on the fixed plate 2; an adjusting block 4 slidingly installed in the U-shaped frame 3, the top of the adjusting block 4 being provided with a movable block 9, the bottom of the adjusting block 4 being rotatably installed with the movable block 9, and the movable block 9 being detachably installed with a needle cylinder structure for obtaining a liver pathological sample; a first electric telescopic rod 5 hinged on the fixed frame 1 for adjusting the position of the adjusting block 4, a connecting block 6 being flange-mounted on the output rod of the first electric telescopic rod 5, a connecting rod 7 being hinged on the connecting block 6 and hinged with the adjusting block 4 for transmitting a pushing force, an elbow lever 8 being hinged on the connecting block 6 and hinged with the U-shaped frame 3 for limiting the movement amount of the adjusting block 4 to limit the sampling depth; a negative pressure structure provided on the first electric telescopic rod 5 and connected with the adjusting block 4 for generating a negative pressure to adsorb the sample to prevent it from falling off; and a supporting structure detachably installed on the fixed frame 1 for supporting the sampler.

[0020] In the present embodiment, when the device is used, the supporting structure is first detachably installed on the fixed frame 1, and the sampler is stably supported by the supporting structure to avoid long-time hand holding by the doctor. Then, the output rod of the first electric telescopic rod 5 is telescoped to drive the connecting block 6 to move. The connecting block 6 transmits a pushing force to the adjusting block 4 through the connecting rod 7 to make the adjusting block 4 slide in the U-shaped frame 3, and at the same time, the movement amount of the adjusting block 4 is limited by the elbow lever 8 to control the sampling depth. When the adjusting block 4 slides, the movable block 9 moves accordingly, and the needle cylinder structure detachably installed on the movable block 9 enters the patient's body to obtain a liver pathological sample. In the sampling process, the negative pressure structure generates a negative pressure to stably adsorb the sample and prevent it from falling off. The fixed frame 1 and the fixed plate 2 fixed at the bottom thereof construct a basic frame, the U-shaped frame 3 provides a track for the sliding of the adjusting block 4, the first electric telescopic rod 5 (for example, a Laizhang brand 10-300MM electric push rod) serves as a power source, the output rod thereof is telescoped to drive the connecting block 6 to move, the connecting block 6 transmits a pushing force to the adjusting block 4 through the connecting rod 7 to make the adjusting block 4 slide in the U-shaped frame 3, the movement amount of the adjusting block 4 can be limited by the mechanical characteristics of the elbow lever 8 to control the sampling depth, the negative pressure structure can generate a negative pressure after the sampling is completed to prevent the sample from falling off from the needle cylinder structure, and the supporting structure is provided to avoid long-time hand holding by the doctor, reduce the risk of internal bleeding caused by shaking of the sampler in the patient's body due to hand shaking, and reduce the medical exposure risk.

[0021] The needle cylinder structure of the further preferred embodiment of the present application comprises a mounting block 10 slidably mounted in the movable block 9, a shell 11 detachably mounted on the mounting block 10 through a fixing bolt 12, an adjusting ring 13 slidably mounted in the shell 11, an outer needle cylinder 15 detachably mounted in the adjusting ring 13, an inner needle cylinder 17 movably mounted in the outer needle cylinder 15, and a limiting block 20 fixed on the top of the inner needle cylinder 17 and in contact with the top of the adjusting block 4.

[0022] In the present embodiment, in the biopsy puncture operation of the hepatology department, the mounting block 10 is first slidably mounted in the movable block 9, the shell 11 is mounted on the mounting block 10 through the fixing bolt 12 to complete the preliminary fixation of the shell 11, then the adjusting ring 13 is slidably mounted in the shell 11, and the outer needle cylinder 15 is clamped into the adjusting ring 13, and then the inner needle cylinder 17 is movably mounted in the outer needle cylinder 15. When the entire sampler is adjusted to the position and is ready for sampling, the relative positions of the inner needle cylinder 17 and the outer needle cylinder 15 are stabilized by the movement of the adjusting block 4, and the two are synchronously moved to achieve the sampling action. The shell 11 is stabilized by the fixing bolt 12, so that the shell 11 can be stably associated with the movable block 9. The adjusting ring 13 is slidably mounted in the shell 11 to provide an adjustable mounting position for the outer needle cylinder 15, which facilitates the replacement of the outer needle cylinder 15 according to different needs, so that the assembly and disassembly of the device are more convenient, and the needle cylinder structure can be easily cleaned, maintained and replaced, thereby improving the use flexibility and maintainability of the equipment.

[0023] In the further preferred embodiment of the present application, the outer needle cylinder 15 is provided with a protrusion 16 clamped in the adjusting ring 13, the movable block 9 is provided with a limiting groove 18, the limiting groove 18 is fixed with a sliding block 19 connected with the mounting block 10, the inner needle cylinder 17 is provided with a recess 47, the inner wall of the outer needle cylinder 15 is fixed with a cutting knife 48 located in the recess 47, and the adjusting block 4 is provided with a driving structure for driving the outer needle cylinder 15 to rotate to drive the cutting knife 48 to rotate to cut the sample.

[0024] In the present embodiment, in the biopsy puncture operation of the hepatology department, the mounting block 10 is first slidably mounted in the movable block 9, the shell 11 is mounted on the mounting block 10 through the fixing bolt 12 to complete the preliminary fixation of the shell 11, then the adjusting ring 13 is slidably mounted in the shell 11, and the outer needle cylinder 15 is clamped into the adjusting ring 13, and then the inner needle cylinder 17 is movably mounted in the outer needle cylinder 15. When the entire sampler is adjusted to the position and is ready for sampling, the relative positions of the inner needle cylinder 17 and the outer needle cylinder 15 are stabilized by the movement of the adjusting block 4, and the two are synchronously moved to achieve the sampling action. The outer syringe 15 is secured within the adjusting ring 13 by the protrusion 16, which facilitates the installation and removal of the outer syringe 15 and allows for the replacement of the appropriate outer syringe 15 according to different situations during sampling. It also ensures that the outer syringe 15 does not shake arbitrarily during sampling, thus improving sampling stability. The limiting groove 18 and the slider 19 cooperate to limit and guide the mounting block 10, making the movement of the mounting block 10 on the movable block 9 more reliable. Through the cooperation of the groove 47 and the inner wall cutting blade 48 of the outer syringe 15, as well as the setting of the driving structure on the adjusting block 4, the sample can be cut off in a timely and effective manner after sampling, preventing the sample from falling off or being pulled and damaged during extraction.

[0025] In a further preferred embodiment of the present invention, the adjusting block 4 consists of a movable part slidably mounted in the U-shaped frame 3 and a connecting part detachably mounted on the movable part by connecting bolts. A sealing ring for preventing air leakage is provided between the movable part and the connecting part. The driving structure includes a mounting frame 41 mounted on the connecting part, a motor 42 mounted on the mounting frame 41, the output shaft of the motor 42 being rotatably connected to the mounting frame 41, and third gears 43 respectively mounted on the output shaft of the motor 42 and the movable block 9. The two third gears 43 mesh for transmission.

[0026] In this embodiment, before the puncture operation for tissue examination in the hepatology department, the movable part of the adjusting block 4 is first slidably installed into the U-shaped frame 3. Then, the connecting part is installed onto the movable part by the connecting bolt. At this time, the limiting block 20 and the inner syringe 17 are stabilized on the sampler. At the same time, the sealing ring set between the movable part and the connecting part can play a role in preventing air leakage. During installation, the two third gears 43 mesh with each other. During the sampling process, when it is necessary to drive the outer syringe 15 to rotate and cut the sample, the motor 42 is started (taking PMM2802 as an example). The movable block 9 is driven to rotate through the transmission of the third gear 43, which in turn drives the outer syringe 15 to rotate, so that the cutting blade 48 is disengaged from the groove 47 and cuts the sample. The adjusting block 4 consists of a movable part and a detachable connecting part, which makes the assembly and disassembly of the adjusting block 4 more convenient, and facilitates the maintenance, cleaning and replacement of parts of the adjusting block 4. The sealing ring can effectively prevent air leakage. In cases where negative pressure is required for assisted sampling or to prevent the sample from being interfered with by gas, it can ensure the stability of the internal environment of the sampler and improve the sample quality. The driving structure can reliably transmit the power of the motor 42 to the movable block 9, thereby driving the outer syringe 15 to rotate and realize the cutting operation of the sample.

[0027] In a further preferred embodiment of the present invention, the negative pressure structure includes a fixed cylinder 26 fixed to the first electric telescopic rod 5, a piston plate 27 movably installed inside the fixed cylinder 26, an adjusting rod 28 installed on the piston plate 27 and extending outside the fixed cylinder 26, a fixed rod welded between the adjusting rod 28 and the connecting block 6, a three-way pipe 25 installed on the fixed cylinder 26, an operating block 23 fixed on the three-way pipe 25, a threaded block 22 fixed on the operating block 23, an air passage 21 disposed inside the adjusting block 4 and communicating with the inner syringe 17, the threaded block 22 being threadedly installed inside the air passage 21, a blocking plate 24 installed on the adjusting block 4 in contact with the outer wall of the adjusting block 4, and an electric regulating valve 29 disposed on the three-way pipe 25 for adjusting the airflow direction.

[0028] In this embodiment, before the puncture operation for tissue examination in the hepatology department, the threaded block 22 is threaded into the airway 21 connected to the inner needle cylinder 17 inside the adjusting block 4, so that the blocking plate 24 contacts the outer wall of the adjusting block 4. During the puncture, the airflow direction is adjusted by controlling the electric adjusting valve 29, and the negative pressure is generated by the movement of the piston plate 27 in the fixed cylinder 26, which acts on the inner needle cylinder 17 through the airway 21 to achieve sample adsorption. By connecting the fixed cylinder 26 and the adjusting rod 28 to the first electric telescopic rod 5, negative pressure can be generated synchronously during the sampling process, eliminating the need for an external air extraction structure and increasing the compactness of each component. By setting the electric regulating valve 29 to regulate the airflow direction, it effectively prevents the adsorption of tissue fluid before sampling from entering the sampler. By threading the threaded block 22 into the airway 21, it not only ensures the stability of the connection but also facilitates disassembly and installation, making it convenient to clean and maintain the airway 21 and related components, thus extending the service life of the equipment.

[0029] In a further preferred embodiment of the present invention, the outer shell 11 is provided with a pressure sensor 14 that can contact the adjusting ring 13 to start the negative pressure adsorption program, and the pressure sensor 14 is covered with an elastic silicone protective sleeve for protecting the pressure sensor 14.

[0030] In this embodiment, during the puncture operation for tissue examination in the hepatology department, resistance is generated as the syringe is inserted into the liver. When the pressure sensor 14 inside the outer shell 11 detects that the pressure generated by the contact between the regulating ring 13 and the ring reaches the set value, the negative pressure adsorption program is started. The negative pressure adsorption program is started by sensing the contact pressure between the regulating ring 13 and the outer shell 11 through the pressure sensor 14 (taking the FOP-M fiber optic pressure sensor as an example). This realizes the automated control of negative pressure adsorption, improves the convenience of operation, and reduces the error and cumbersomeness of human operation.

[0031] In a further preferred embodiment of the present invention, the support structure includes a connecting frame 50 detachably mounted on the fixed frame 1, a support frame 56 fixed on the connecting frame 50, a clamping plate 51 clamped on the hospital bed, a support plate 52 fixed on the clamping plate 51 for stabilizing the clamping plate 51, an adjusting frame 53 slidably mounted on the support plate 52, a support cylinder 54 mounted on the top of the adjusting frame 53, and a second electric telescopic rod 55 fixed inside the support cylinder 54 for adjusting the height of the equipment to assist sampling. The flange of the support frame 56 is mounted on the output rod of the second electric telescopic rod 55.

[0032] In this embodiment, before the puncture operation for tissue examination in the hepatology department, the connecting frame 50 is first installed on the fixing frame 1 to complete the initial assembly. Then, the clamping plate 51 is clamped in a suitable position on the bed. Then, according to the actual needs, the position of the sliding adjustment frame 53 on the support plate 52 is adjusted to a roughly suitable height range. After that, the second electric telescopic rod 55 (taking the Delco LT30 electric push rod as an example) fixed in the support cylinder 54 is activated. The height of the device is adjusted by the extension and retraction of the output rod of the second electric telescopic rod 55 so that the device is in the optimal sampling position. Finally, the support frame 56 is installed on the output rod of the second electric telescopic rod 55 through the flange. After the sampling is completed, the syringe can be detached from the patient by extending the output rod of the second electric telescopic rod 55. By detachably mounting the connecting frame 50 onto the fixed frame 1, the assembly and disassembly of the support structure and the equipment become more convenient and quick, facilitating the transportation, storage, and use of the equipment in different scenarios. The combination of the clamping plate 51 and the support plate 52 can firmly fix the support structure to the hospital bed, providing a stable support foundation for the equipment, reducing the shaking of the equipment during operation, improving the safety of puncture sampling, and reducing the risk of secondary injury to the patient caused by equipment shaking. By sliding the adjusting frame 53 onto the support plate 52, the position of the equipment can be flexibly adjusted according to the patient's specific situation and operational needs. Furthermore, the height of the equipment can be adjusted by the second electric telescopic rod 55, which can meet the puncture sampling needs of patients of different heights and positions, improving the versatility and applicability of the equipment.

[0033] In a further preferred embodiment of the present invention, a guide frame 57 is slidably mounted on the support cylinder 54, a support rod 58 connected to the support frame 56 is mounted on the guide frame 57, a threaded rod 59 is threadedly mounted on the clamping plate 51, a clamping plate 60 for resisting the bed to stabilize the puncture equipment is rotatably mounted on the threaded rod 59, an anti-slip pad 61 for increasing contact friction is fixed on the clamping plate 60, and a snap-fit ​​member 62 for stabilizing the adjusting frame 53 is provided on the adjusting frame 53.

[0034] In this embodiment, during the installation of the hepatology tissue examination puncture equipment, after the clamping plate 51 is clamped in the appropriate position on the bed, the threaded rod 59 is rotated. Since the threaded rod 59 is threadedly installed with the clamping plate 51, rotating the threaded rod 59 will cause it to move towards the bed, thereby driving the clamping plate 60, which is rotated and installed on the threaded rod 59, to approach the bed until the anti-slip pad 61 on the clamping plate 60 touches the bed, stabilizing the puncture equipment. After adjusting the position of the adjustment frame 53 on the support plate 52, the clamping part 62 on the adjustment frame 53 is used to stabilize the adjustment frame 53 in the current position. The combined structure of guide frame 57, support rod 58, support cylinder 54, and support frame 56 provides auxiliary support and stability during equipment height adjustment, ensuring stability even with height changes and reducing the possibility of puncture effects being affected by equipment swaying. The threaded rod 59, clamping plate 60, and anti-slip pad 61 allow for convenient and quick secure fixing of the equipment to the hospital bed. The anti-slip pad 61 increases friction, further enhancing equipment stability and preventing movement during operation, thus ensuring the safety of the puncture procedure. The snap-fit ​​connector 62 effectively stabilizes the position of the adjustment frame 53, preventing accidental movement during operation and improving the reliability and stability of the equipment.

[0035] In a further preferred embodiment of the present invention, the snap-fit ​​member 62 includes a protective shell 63 mounted on the adjusting frame 53, a spring 64 mounted inside the protective shell 63, a snap-fit ​​block 65 fixed on the spring 64, a guide rod 66 mounted on the snap-fit ​​block 65 and extending outside the protective shell 63, a connecting rope 67 fixed on the guide rod 66, and a pinch piece 68 fixed on the connecting rope 67 for providing an operating grip point. The support plate 52 is provided with a recessed assembly 70 for accommodating the snap-fit ​​block 65.

[0036] In this embodiment, during a hepatology tissue biopsy, when it is necessary to adjust the position of the adjustment frame 53 on the support plate 52, the operator holds the pinch plate 68 and pulls the connecting rope 67 through the pinch plate 68. The connecting rope 67 drives the guide rod 66 to move, and the guide rod 66 drives the locking block 65 to move within the protective shell 63. At the same time, the spring 64 is compressed, causing the locking block 65 to disengage from the recess group 70 on the support plate 52. At this time, the adjustment frame 53 can slide freely on the support plate 52. The operator moves the adjustment frame 53 to the appropriate position according to the actual needs. After adjusting to the appropriate position, the pinch plate 68 is released, the spring 64 returns to its original deformation, and pushes the locking block 65 to re-engage in the corresponding recess in the recess group 70, thereby stabilizing the adjustment frame 53 in the current position and completing the adjustment operation. The spring 64, the locking block 65, and the notch assembly 70 work together to easily and quickly engage and disengage the adjusting frame 53. Operators only need to squeeze the pinch plate 68 to complete the operation, greatly improving the efficiency of adjusting the position of the adjusting frame 53 and saving operation time. The protective shell 63 protects the internal components such as the spring 64 and the locking block 65, preventing them from being interfered with or damaged by external factors during equipment use, extending the service life of the locking component 62, and ensuring its stability and reliability. The guide rod 66 and connecting rope 67 allow operators to remotely control the movement of the locking block 65, avoiding the inconvenience of direct contact. When the locking block 65 engages in the notch of the notch assembly 70, it effectively prevents the adjusting frame 53 from moving due to external forces during operation, ensuring the stability of the equipment during puncture operations and improving puncture safety.

[0037] In a further preferred embodiment of the present invention, a guide block 69 that is slidably connected to the U-shaped frame 3 is fixed on the adjusting block 4, a slot 71 is provided on the support cylinder 54, an extension block extending into the slot 71 is installed on the guide frame 57, a limiting bolt 44 is threadedly installed on the adjusting block 4, a slot 45 for accommodating the limiting bolt 44 is provided on the limiting block 20, and a sealing gasket 46 for preventing air leakage is fixed on the top of the limiting block 20.

[0038] In this embodiment, during the use of the hepatology tissue examination puncture equipment, when it is necessary to slide the adjustment block 4, since the adjustment block 4 is fixed with a guide block 69 that is slidably connected to the U-shaped frame 3, the operator can directly push the adjustment block 4, and the guide block 69 will slide along the U-shaped frame 3 to adjust the position of the adjustment block 4 on the U-shaped frame 3. When it is necessary to fix the adjustment block 4 in a specific position, rotate the limiting bolt 44 on the adjustment block 4 to move the limiting bolt 44 towards the limiting block 20 until the limiting bolt 44 is engaged in the slot 45 on the limiting block 20, thereby fixing the adjustment block 4 in the current position. During the use of the equipment, the sealing gasket 46 on the top of the limiting block 20 will fit tightly with the relevant components to prevent air leakage. The sliding connection between the guide block 69 and the U-shaped frame 3 provides guidance and restriction for the movement of the adjusting block 4, ensuring that the adjusting block 4 can only move in a straight line along the direction set by the U-shaped frame 3, thus guaranteeing the stability of the movement of the adjusting block 4. The extension block on the guide frame 57 cooperates with the slot 71 on the support cylinder 54. When the extension block is embedded in the slot 71, the restriction effect of the slot 71 on the extension block achieves a stable connection between the guide frame 57 and the support cylinder 54, preventing the guide frame 57 from shaking or falling off the support cylinder 54. The limiting bolt 44 cooperates with the bayonet 45 to prevent the adjusting block 4 from moving further, thereby achieving the purpose of fixing the position of the adjusting block 4. Since the sealing gasket 46 is elastic, it can fit tightly when in contact with the plane, filling the gap between the components and playing a role in preventing air leakage, ensuring the stability of the internal air pressure of the equipment, and improving the performance and use effect of the equipment.

[0039] To further improve the performance of this device, in addition to the above-mentioned solutions, this solution also includes the following embodiments: In another embodiment of the present invention, two rotating shafts 30 are rotatably mounted on the fixed plate 2 via damping bearings. An arc-shaped plate 31 is fixed on each of the two rotating shafts 30. The two arc-shaped plates 31 can be interlocked and sleeved on the outer syringe 15. An empty chamber is provided inside the arc-shaped plate 31. A heating wire 49 for preheating the syringe is provided inside the empty chamber. A transmission structure for transmission is provided between the rotating shaft 30 and the adjusting block 4.

[0040] In this embodiment, during operation, the two arc-shaped plates 31 are engaged by rotating the rotating shaft 30, thereby fitting around the outer syringe 15. When the syringe needs to be preheated, the heating wire 49 inside the empty chamber of the arc-shaped plate 31 is activated. The heating wire 49 generates heat and transfers the heat to the outer syringe 15, thereby achieving preheating of the syringe. By setting two cooperating arc-shaped plates 31 and placing them around the outer syringe 15, the movement path of the outer syringe 15 can be effectively stabilized, reducing the shaking of the outer syringe 15 during puncture, improving the stability of puncture, and reducing the risk of secondary injury to the patient. The heating wire 49 set inside the arc-shaped plate 31 can preheat the syringe, so that the temperature of the syringe is close to the human body temperature when it enters the patient's body, preventing nerve contraction from increasing the difficulty of sampling.

[0041] In another embodiment of the present invention, the transmission structure includes a first gear 35 fixed on and meshing with two rotating shafts 30, a transmission shaft 32 rotatably mounted on the fixed plate 2, a sprocket 33 rotatably mounted on both the transmission shaft 32 and either of the rotating shafts 30, a chain 34 for transmission sleeved on both of the sprockets 33, a connecting shaft rotatably mounted on the fixed plate 2, bevel gears 36 mounted on both the connecting shaft and the transmission shaft 32, the two bevel gears 36 meshing with each other, a second gear 37 fixed on the transmission shaft 32, and a rack 38 slidably mounted on the fixed plate 2 and connected to the adjusting block 4, the rack 38 meshing with the second gear 37 for transmission.

[0042] In this embodiment, when the adjusting block 4 moves and drives the rack 38 to slide downward (i.e., sampling), the meshing relationship between the rack 38 and the second gear 37 causes the second gear 37 to rotate. The second gear 37 drives the transmission shaft 32 to rotate. The sprocket 33 on the transmission shaft 32 transmits power to the sprocket 33 on one of the rotating shafts 30 through the chain 34, causing the rotating shaft 30 to rotate. At the same time, the transmission shaft 32 meshes with the bevel gear 36 on the connecting shaft, so that the two arc plates 31 can move towards each other and be sleeved on the outside of the syringe, realizing the snap-fit ​​operation of the syringe. When the adjusting block 4 moves and drives the rack 38 to slide upward (i.e., discharging), the above transmission components run in reverse, and the two arc plates 31 can move in opposite directions, thereby releasing the syringe. The transmission is achieved through the cooperation of the first gear 35, sprocket 33, chain 34, bevel gear 36, second gear 37 and rack 38, so that sampling and opening and closing operations of the arc plate 31 can be carried out simultaneously without the need for additional drive components, thus reducing the difficulty of operation.

[0043] In another embodiment of the present invention, a support block 39 is fixed on the rack 38, and a guide groove 40 is provided on the fixing plate 2. The support block 39 is slidably installed in the guide groove 40, and the support block 39 cooperates with the guide groove 40 to limit the movement path of the rack 38.

[0044] In this embodiment, when the adjusting block 4 is moved by force and drives the rack 38 to move, the guide groove 40 provides a moving track for the support block 39. Under the constraint of the guide groove 40, the support block 39 can only move along the direction and range specified by the guide groove 40, so that the rack 38 can always maintain a good meshing state with the second gear 37 during the movement. Guided by the guide groove 40, the support block 39 is guided, and the rack 38 can move strictly according to the predetermined path, avoiding transmission failure caused by the movement deviation of the rack 38 and ensuring the reliability of the transmission structure.

[0045] In another embodiment of the present invention, an aluminum alloy rod is installed at the bottom of the fixing frame 1, and a rubber sleeve for insulation is provided on the aluminum alloy rod. An LED lamp panel 72 for auxiliary lighting is installed at the bottom of the aluminum alloy rod, and a transparent plastic protective shell for protecting the internal structure is provided on the external thread of the LED lamp panel 72.

[0046] In this embodiment, during use, the transparent plastic protective shell is first threaded onto the LED light panel 72, and then the LED light panel 72 installed at the bottom of the aluminum alloy rod is turned on. The LED light panel 72 emits light for auxiliary lighting, and then sampling-related operations are performed. The rubber sleeve provides insulation, significantly reducing the risk of electric shock during use and ensuring the safety of operators. The LED light panel 72 prevents the fixing frame 1 and support structure from obstructing the optical fiber, making it difficult for medical staff to observe the sampling process. The transparent plastic protective shell protects the LED light panel 72, extending its lifespan, reducing damage and maintenance costs caused by external factors, and ensuring the stability and brightness of the LED light panel 72's illumination.

[0047] In summary, compared with related technologies, this device, through the arrangement of a fixed frame 1, a fixed plate 2, a U-shaped frame 3, an adjusting block 4, a movable block 9, a syringe structure, a first electric telescopic rod 5, a connecting block 6, a connecting rod 7, and an elbow rod 8, along with a support structure, solves the problems of traditional puncture sampling methods, such as doctors' hand tremors during prolonged holding of the sampling device leading to sample shake and internal bleeding in patients, as well as the high risk of medical exposure. It also limits the sampling depth, and the negative pressure structure allows for sample adsorption, solving the problem of sample detachment and increasing sample stability.

[0048] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A rotary sampler for tissue biopsy in hepatology, characterized in that, include: A fixing frame, wherein a fixing plate is fixed to the bottom of the fixing frame; U-shaped frame mounted on the fixed plate; An adjusting block is slidably installed inside the U-shaped frame. The top and bottom of the adjusting block are rotatably mounted with a movable block. A syringe structure for obtaining liver pathological samples is detachably installed on the movable block. A first electric telescopic rod is hinged to the fixed frame for adjusting the position of the adjusting block. A connecting block is mounted on the flange of the output rod of the first electric telescopic rod. A connecting rod hinged to the connecting block and the adjusting block is used to transmit the pushing force. An elbow is hinged to the connecting block and the U-shaped frame for limiting the movement of the adjusting block to limit the sampling depth. A negative pressure structure is installed on the first electric telescopic rod and connected to the adjusting block to generate negative pressure to adsorb the sample and prevent it from falling off. A support structure that can be detachably mounted on the mounting frame to support the sampler.

2. The rotary sampler for hepatology tissue examination as described in claim 1, characterized in that, The syringe structure includes a mounting block slidably mounted within the movable block, a housing detachably mounted on the mounting block by fixing bolts, an adjusting ring slidably mounted within the housing, an outer syringe detachably mounted within the adjusting ring, an inner syringe movably mounted within the outer syringe, and a limiting block fixed to the top of the inner syringe and in contact with the top of the adjusting block.

3. The rotary sampler for hepatology tissue examination as described in claim 2, characterized in that, The outer syringe is provided with a protrusion that can be locked in the adjusting ring. The movable block is provided with a limiting groove. A slider connected to the mounting block is fixed in the limiting groove. The inner syringe is provided with a groove. A cutting blade located in the groove is fixed on the inner wall of the outer syringe. The adjusting block is provided with a driving structure for driving the outer syringe to rotate so as to drive the cutting blade to rotate and cut off the sample.

4. The rotary sampler for hepatology tissue examination as described in claim 3, characterized in that, The adjusting block consists of a movable part slidably mounted in the U-shaped frame and a connecting part detachably mounted on the movable part by connecting bolts. A sealing ring for preventing air leakage is provided between the movable part and the connecting part. The driving structure includes a mounting bracket mounted on the connecting part, a motor mounted on the mounting bracket, the output shaft of the motor being rotatably connected to the mounting bracket, and third gears respectively mounted on the motor output shaft and the movable block. The two third gears mesh for transmission.

5. The rotary sampler for hepatology tissue examination as described in claim 2, characterized in that, The negative pressure structure includes a fixed cylinder fixed to the first electric telescopic rod, a piston plate movably installed inside the fixed cylinder, an adjusting rod installed on the piston plate and extending outside the fixed cylinder, a fixed rod welded between the adjusting rod and the connecting block, a three-way pipe installed on the fixed cylinder, an operating block fixed on the three-way pipe, a threaded block fixed on the operating block, an air passage disposed inside the adjusting block and communicating with the inner syringe, the threaded block being threadedly installed inside the air passage, a blocking plate installed on the adjusting block that contacts the outer wall of the adjusting block, and an electric adjusting valve disposed on the three-way pipe for adjusting the airflow direction.

6. The rotary sampler for hepatology tissue examination as described in claim 5, characterized in that, The housing contains a pressure sensor that can contact the adjustment ring to initiate the negative pressure adsorption process, and the pressure sensor is covered with an elastic silicone protective sleeve to protect the pressure sensor.

7. The rotary sampler for hepatology tissue examination as described in claim 2, characterized in that, The support structure includes a connecting frame detachably mounted on the fixed frame, a support frame fixed on the connecting frame, a clamping plate clamped on the hospital bed, a support plate fixed on the clamping plate for stabilizing the clamping plate, an adjusting frame slidably mounted on the support plate, a support cylinder mounted on the top of the adjusting frame, and a second electric telescopic rod fixed inside the support cylinder for adjusting the height of the equipment to assist in sampling. The flange of the support frame is mounted on the output rod of the second electric telescopic rod.

8. The rotary sampler for hepatology tissue examination as described in claim 7, characterized in that, A guide frame is slidably mounted on the support cylinder, and a support rod connected to the support frame is mounted on the guide frame. A threaded rod is threadedly mounted on the clamping plate, and a clamping plate for resisting the bed to stabilize the puncture equipment is rotatably mounted on the threaded rod. An anti-slip pad for increasing contact friction is fixed on the clamping plate, and a locking component for stabilizing the adjusting frame is provided on the adjusting frame.

9. The rotary sampler for hepatology tissue examination as described in claim 8, characterized in that, The latching component includes a protective shell mounted on the adjustment frame, a spring mounted inside the protective shell, a latching block fixed on the spring, a guide rod mounted on the latching block and extending outside the protective shell, a connecting rope fixed on the guide rod, and a pinch piece fixed on the connecting rope for providing an operating grip point. The support plate is provided with a set of notches for accommodating the latching block.

10. The rotary sampler for hepatology tissue examination as described in claim 8, characterized in that, The adjusting block is fixed with a guide block that is slidably connected to the U-shaped frame. The support cylinder is provided with a slot. The guide frame is equipped with an extension block that extends into the slot. The adjusting block is threaded with a limit bolt. The limit block is provided with a slot for accommodating the limit bolt. The top of the limit block is fixed with a sealing gasket for preventing air leakage.

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