Tumor puncture extraction device and system

Abstract

The invention relates to the field of medical operation equipment, in particular to a tumor puncture extraction device and system.The tumor puncture extraction device comprises a supporting cylinder, a first cavity, a switching head, a needle head and a pusher; the first cavity is communicated with the supporting cylinder; the switching head comprises a connecting pipe, a sliding block, a plug and an elastic piece, the connecting pipe is provided with a liquid inlet and a liquid extraction opening and arranged on one side of the supporting cylinder, the sliding block is slidably arranged on one side of the liquid inlet, the plug is slidably arranged in the liquid extraction opening, the side, close to the sliding block, of the plug is provided with an inclined face, and the elastic piece is used for supporting the plug; when the first cavity is installed, the sliding block pushes the plug to be lifted up so as to close the liquid extraction opening and open the liquid inlet at the same time. When the first cavity is taken down, the plug pushes the sliding block to reset to close the liquid inlet under the support of the elastic piece, and meanwhile, the liquid pumping opening is opened; the needle is communicated with the connecting tube; the pusher is arranged in the second cavity in a sliding mode. Therefore, anesthesia injection and tumor sample sampling work can be carried out at the same time through one-time puncture, and the working efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the field of medical surgical equipment, and particularly to a tumor puncture extraction device and system. Background Art

[0002] Tumor puncture, also known as fine needle aspiration or core needle biopsy, is a medical diagnostic procedure used to obtain small samples of tissue from a mass or suspicious lesion in the body for pathological analysis. This procedure is typically performed by a radiologist, surgeon, or medical oncologist under image guidance (such as ultrasound, CT scan) to ensure that the needle accurately enters the target area.

[0003] Existing tumor puncture extraction devices have certain limitations and inconveniences in the operation process. Current practice usually requires medical staff to first perform local anesthesia at the puncture site and then obtain a tumor tissue sample through a puncture needle. This step-by-step anesthesia and sampling process not only increases the operation time, resulting in increased operation difficulty, but also brings unnecessary risks to the patient. Summary of the Invention

[0004] The purpose of the present invention is to provide a tumor puncture extraction device and system, aiming to enable anesthesia injection and tumor sample sampling to be carried out simultaneously during a single puncture, thereby improving work efficiency.

[0005] To achieve the above object, in a first aspect, a tumor puncture extraction device includes a support cylinder, a first cavity, a switching head, a needle, and a pusher; A second cavity is provided inside the support cylinder, and the first cavity communicates with the support cylinder; The switching head includes a connecting pipe, a slider, a plug, and an elastic member. The connecting pipe has a liquid inlet and a liquid extraction port. The connecting pipe is arranged on one side of the support cylinder. The slider is slidably arranged on one side of the liquid inlet. The plug is slidably arranged in the liquid extraction port. The plug has an inclined surface on the side close to the slider. The elastic member is used to support the plug. When installing the first cavity, the slider pushes the plug to lift and close the liquid extraction port, and at the same time opens the liquid inlet; when removing the first cavity, the plug is supported by the elastic member to push the slider to reset and close the liquid inlet, and at the same time opens the liquid extraction port; The needle communicates with the connecting pipe; The pusher is slidably arranged in the second cavity.

[0006] Wherein, the first cavity includes a first cavity body and a first connection head, the support cylinder includes a support cylinder body and a second connection head, the first connection head communicates with the second connection head, and the second connection head is in a closed state when not connected.

[0007] Wherein, the first cavity further includes a partition plate and a liquid outlet pressure valve. The partition plate is disposed below the first cavity body. The liquid outlet pressure valve is communicated with the partition plate and is close to the slider. The liquid outlet pressure valve opens after reaching a preset pressure value.

[0008] Wherein, the support cylinder has a connection groove, and the first cavity has a connection block. The connection block is detachably connected to the connection groove.

[0009] Wherein, the switching head further includes a first sealing ring, and the first sealing ring is disposed on one side of the liquid inlet.

[0010] Wherein, the connecting pipe includes a connecting pipe body, a sealing ring and a plurality of buckles. The plurality of buckles are rotatably disposed around the connecting pipe body and correspond to the clamping grooves provided on the support cylinder. The sealing ring is disposed between the connecting pipe body and the support cylinder.

[0011] Wherein, the plug includes a plug body, a connecting rod, a sealing head and a first sealing ring. The plug body has an inclined surface and is disposed on one side of the elastic member. The connecting rod is fixedly connected to the plug body. The sealing head has a through hole. The sealing head is fixedly connected to the connecting rod and is located in the liquid extraction port. The first sealing ring is fixed in the liquid extraction port and corresponds to the sealing head.

[0012] Wherein, the plug further includes a second sealing ring, and the second sealing ring is fixed on the first sealing ring and is located between the first sealing ring and the sealing head.

[0013] Wherein, the pusher includes a sliding block, a push piston, a push screw and a push motor. The sliding block is slidably disposed in the second cavity. The push piston is fixed on the sliding block. The push screw is threadedly connected to the sliding block. The output end of the push motor is connected to the push screw.

[0014] In a second aspect, the present invention further provides a tumor puncture and extraction system, including the tumor puncture and extraction device as described above.

[0015] A tumor puncture extraction device and system of the present invention. The support cylinder is the main structural framework of the device. It not only provides an installation basis for other components but also contains an internal second cavity for accommodating a pusher. On the outer side of the support cylinder, an anesthetic is contained in the first cavity. The first cavity can be assembled onto the support cylinder. During installation, the first cavity pushes the slider to slide to open the liquid inlet, and at the same time, the slider contacts the inclined surface of the plug to drive the plug to lift and close the liquid extraction port. At this time, the pusher can be started, so that air pressure can enter the first cavity through the connection between the first cavity and the second cavity, and then push the anesthetic to enter the human body through the liquid inlet and the needle. After removing the first cavity, the elastic member supports the plug to move downward and pushes the slider to reset to close the liquid inlet, and the plug also opens the position of the liquid extraction port. After that, pulling up the pusher can suck the tumor sample through the needle and enter the second cavity through the liquid extraction port, so that anesthesia injection and tumor sample sampling can be carried out simultaneously in one puncture, thereby improving work efficiency. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a structural diagram of a tumor puncture extraction device of the present invention before installing the first cavity.

[0018] Figure 2 It is a structural diagram of a tumor puncture extraction device of the present invention.

[0019] Figure 3 It is a right-side structural diagram of a tumor puncture extraction device of the present invention.

[0020] Figure 4 It is a left-side structural diagram of a tumor puncture extraction device of the present invention.

[0021] Figure 5 It is a sectional structural diagram of a tumor puncture extraction device of the present invention.

[0022] Figure 6 is Figure 5 A partial enlarged view of detail A.

[0023] Figure 7 It is a sectional structural diagram of a tumor puncture extraction device of the present invention along the slider.

[0024] Figure 8It is the structural diagram of the distance controller of the present invention.

[0025] Support cylinder 101, first cavity 102, needle 104, pusher 105, second cavity 108, connecting pipe 110, slider 111, plug 112, elastic member 113, liquid inlet 114, liquid extraction port 115, connecting groove 116, connecting block 117, handle 118, connecting pipe body 119, sealing ring 120, buckle 121, distance controller 123, infrared sensor 124, power supply 125, data processing unit 126, control unit 127, display 128, sliding block 129, push piston 130, push screw 131, push motor 132, first cavity body 133, first connector 134, support cylinder body 135, second connector 136, partition 137, liquid outlet pressure valve 138, first sealing ring 139, plug body 140, connecting rod 141, sealing head 142, second sealing ring 143, second sealing ring 144. Detailed implementation manners

[0026] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, in the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0028] First embodiment Please refer to Figures 1 to 8, the present invention provides a tumor puncture and extraction device, including a support cylinder 101, a first cavity 102, a switching head, a needle 104 and a pusher 105; a second cavity 108 is arranged in the support cylinder 101, and the first cavity 102 communicates with the support cylinder 101; the switching head includes a connecting pipe 110, a slider 111, a plug 112 and an elastic member 113, the connecting pipe 110 has a liquid inlet 114 and a liquid extraction port 115, the connecting pipe 110 is arranged on one side of the support cylinder 101, the slider 111 is slidably arranged on one side of the liquid inlet 114, the plug 112 is slidably arranged in the liquid extraction port 115, the plug 112 has an inclined surface on the side close to the slider 111, and the elastic member 113 is used to support the plug 112. When installing the first cavity 102, the slider 111 pushes the plug 112 to lift to close the liquid extraction port 115, and at the same time opens the liquid inlet 114; when removing the first cavity 102, the plug 112 is supported by the elastic member 113 to push the slider 111 to reset to close the liquid inlet 114, and at the same time opens the liquid extraction port 115; the needle 104 communicates with the connecting pipe 110; the pusher 105 is slidably arranged in the second cavity 108.

[0029] In this embodiment, the support cylinder 101 is the main structural framework of the device. It not only provides an installation basis for other components, but also contains an internal second cavity 108 for accommodating the pusher 105. On the outside of the support cylinder 101, an anesthetic is contained in the first cavity 102. The first cavity 102 can be assembled to the support cylinder 101. During installation, the first cavity 102 pushes the slider 111 to slide to open the liquid inlet 114. At the same time, the slider 111 contacts the inclined surface of the plug 112 to drive the plug 112 to lift and close the liquid extraction port 115. At this time, the pusher 105 can be started, so that the air pressure can enter the first cavity 102 through the connection between the first cavity 102 and the second cavity 108, and then push the anesthetic to enter the human body through the liquid inlet 114 and the needle 104. After that, the first cavity 102 is removed, the elastic member 113 supports the plug 112 to move down and push the slider 111 to reset to close the liquid inlet 114, and the plug 112 also opens the position of the liquid extraction port 115. After that, pulling up the pusher 105 can suck the tumor sample through the needle 104 and enter the second cavity 108 through the liquid extraction port 115, so that anesthetic injection and tumor sample sampling can be carried out simultaneously in one puncture, thereby improving work efficiency.

[0030] The first cavity 102 includes a first cavity body 133 and a first connector 134. The support cylinder 101 includes a support cylinder body 135 and a second connector 136. The first connector 134 communicates with the second connector 136, and the second connector 136 is in a closed state when not connected.

[0031] When not connected, the second connector 136 of the support cylinder body 135 is in a closed state, so that a space for generating negative pressure can be provided in the support cylinder body 135. When the first cavity 102 and the support cylinder 101 are connected, the first connector 134 and the second connector 136 are docked, so that the support cylinder body 135 and the first cavity body 133 can be communicated, and the gas pressure generated by the pusher 105 can be conducted into the first cavity body 133 to push the anesthetic liquid.

[0032] The first cavity 102 further includes a partition 137 and a liquid outlet pressure valve 138. The partition 137 is arranged below the first cavity body 133. The liquid outlet pressure valve 138 communicates with the partition 137 and is close to the slider 111. The liquid outlet pressure valve 138 opens after reaching a preset pressure value.

[0033] The partition 137 is used to seal the anesthetic liquid in the first cavity body 133. The liquid outlet pressure valve 138 can be opened after the pressure in the first cavity body 133 reaches a preset value, so that the anesthetic liquid can flow down and be discharged through the needle 104.

[0034] The support cylinder 101 has a connection groove 116, and the first cavity 102 has a connection block 117. The connection block 117 is detachably connected to the connection groove 116.

[0035] One or more specially designed connection grooves 116 are provided on the outer side of the support cylinder 101. The positions and shapes of these connection grooves 116 are precisely calculated to ensure the best fit with the corresponding components on the first cavity 102.

[0036] The first cavity 102 is equipped with a matching connection block 117. The outer dimension and material of the connection block 117 are adapted to the connection groove 116 on the support cylinder 101 to achieve a tight fit between the two. The connection block 117 may be manufactured by high-precision machining technology, ensuring its smoothness and stability when inserted into the connection groove 116.

[0037] Furthermore, 2 to 4 columnar magnets (diameter 3 to 5 mm) are embedded in the connection block 117, symmetrically distributed on both sides of the connection block.

[0038] A magnetic conductive metal sheet is embedded at the position of the connecting groove 116 corresponding to the columnar magnet to form a magnetic attraction pairing. A 15° inclined surface is designed at the front end of the connecting block 117 to guide the magnet to quickly adsorb. A 0.1 mm micro air groove is reserved on the magnetic adsorption contact surface to avoid the influence of negative pressure on the separation smoothness.

[0039] During installation, the connecting block 117 of the first cavity 102 is brought close to the connecting groove 116 of the support cylinder 101, and the columnar magnet is automatically adsorbed and guided to the correct position. Then, gently push it further, and the magnetic force will pull the connecting block 117 into the bottom of the connecting groove 116 for fixation to complete the sealing. During the separation stage, lift the first cavity 102 at an angle of 30°, and the magnetic attraction force weakens, making it easy to disassemble.

[0040] The support cylinder 101 further has a handle 118, and the handle 118 is fixed on the surface of the support cylinder 101.

[0041] The handle 118 is firmly fixed on the surface of the support cylinder 101, usually located at the position where the user can hold it most naturally. Its shape may be designed to conform to the curve of the palm, and the surface is covered with anti-slip material to increase friction and reduce hand fatigue caused by long-term operation.

[0042] The connecting pipe 110 includes a connecting pipe body 119, a sealing ring 120, and a plurality of buckles 121. The plurality of buckles 121 are rotatably arranged around the connecting pipe body 119 and correspond to the clamping grooves provided on the support cylinder 101. The sealing ring 120 is arranged between the connecting pipe body 119 and the support cylinder 101.

[0043] The connecting pipe 110 is composed of a connecting pipe body 119, a sealing ring 120, and a plurality of buckles 121, which is a key component to ensure the safety and reliability of fluid transmission. The connecting pipe body 119 is the basis of the whole structure. It not only provides a channel for liquid or sample to pass through, but also provides an installation platform for other components such as the sealing ring 120 and the buckles 121.

[0044] A sealing ring 120 is arranged between the connecting pipe body 119 and the support cylinder 101. The sealing ring 120 is made of a high-elastic material and can form a tight sealing ring on the contact surface between the two. The design of the sealing ring 120 takes into account pressure compensation and wear resistance. Even in a high-pressure environment, it can maintain good sealing performance, effectively prevent any possible leakage, and ensure no pollution and no loss during the sample collection process.

[0045] In addition, a plurality of buckles 121 are rotatably arranged around the connecting pipe body 119, and these buckles 121 correspond one by one to the pre-designed card slots on the support cylinder 101. Each buckle 121 can rotate around its fixed point to facilitate the operator to easily lock the connecting pipe 110 onto the support cylinder 101 or unlock it from the support cylinder 101. The design of the buckle 121 generally includes a raised part, and when it rotates into place, this raised part will be embedded in the card slot on the support cylinder 101, thereby achieving a firm mechanical connection.

[0046] The switching head further includes a first sealing ring 139, and the first sealing ring 139 is arranged on one side of the liquid inlet 114.

[0047] This first sealing ring 139 is located on one side of the liquid inlet 114 and cooperates with the edge of the liquid inlet 114 and the slider 111 to further play a sealing role.

[0048] The plug 112 includes a plug body 140, a connecting rod 141, a sealing head 142 and a second sealing ring 143. The plug body 140 has an inclined surface and is arranged on one side of the elastic member 113. The connecting rod 141 is fixedly connected to the plug body 140. The sealing head 142 has a flow hole. The sealing head 142 is fixedly connected to the connecting rod 141 and is located in the liquid extraction port 115. The second sealing ring 143 is fixed in the liquid extraction port 115 and is arranged corresponding to the sealing head 142.

[0049] The plug body 140 is used to contact the slider 111. When the slider 111 is pushed by the first cavity 102 to move, the plug body 140 moves upward under the support of the inclined surface, thereby driving the sealing head 142 to move upward and contact the second sealing ring 143, thereby closing the flow hole on the sealing head 142. At this time, the liquid extraction port 115 is in a closed state. After the anesthetic liquid injection is completed, the first cavity 102 is removed. At this time, the slider 111 is reset under the push of the inclined surface of the plug body 140, and the sealing head 142 moves downward, thereby opening the flow hole on the sealing head 142, so that the extraction of tissue fluid can be carried out.

[0050] The plug 112 further includes a second sealing ring 144. The second sealing ring 144 is fixed on the second sealing ring 143 and is located between the second sealing ring 143 and the sealing head 142.

[0051] The sealing effect between the second sealing ring 143 and the sealing head 142 can be enhanced through the second sealing ring 144.

[0052] The tumor puncture extraction device further includes a distance controller 123, and the distance controller 123 is used to detect the distance that the needle 104 penetrates the skin.

[0053] The distance controller 123 includes an infrared sensor 124, a power supply 125, a data processing unit 126, a control unit 127, and a display 128. The infrared sensor 124 is disposed on one side of the connecting tube body 119. The data processing unit 126 is connected to the infrared sensor 124. The control unit 127 is connected to the data processing unit 126 and is connected to the pusher 105. The display 128 is connected to the control unit 127.

[0054] One of the core components of the distance controller 123 is the infrared sensor 124, which is carefully placed on one side of the connecting tube body 119. This sensor uses infrared technology to measure the distance between the needle 104 and the skin surface. By emitting and receiving infrared light beams, it can monitor the position changes of the needle 104 in real time, providing high-precision distance information.

[0055] To ensure the stable operation of the system, the distance controller 123 is built-in with a reliable power supply 125 module. The power supply 125 is responsible for powering the entire control system, including various parts such as the infrared sensor 124, the data processing unit 126, the control unit 127, and the display 128.

[0056] The distance data obtained by the infrared sensor 124 is transmitted to the data processing unit 126 for analysis. The data processing unit 126 is a high-performance microprocessor or an application-specific integrated circuit (ASIC), which can quickly process the data stream from the sensor, convert the original signal into a meaningful distance value. In addition, it is also responsible for filtering and correcting the data, eliminating possible error sources, and ensuring the accuracy and reliability of the final output distance information.

[0057] As the "brain" of the entire system, the control unit 127 is closely connected to the data processing unit 126 and directly controls the operation of the pusher 105. According to the processed distance information, the control unit 127 can issue instructions to adjust the speed and position of the pusher 105, achieving precise control of the feeding of the needle 104. At the same time, it is also responsible for coordinating the work of other subsystems, such as the alarm mechanism, to notify the operator in a timely manner when detecting abnormal situations.

[0058] To enable users to intuitively understand the position of the needle 104, the device is equipped with an easy-to-read display 128. The display 128 is usually located in a prominent position on the device, showing real-time distance values and other relevant parameters. The interface design is user-friendly, supporting multiple language and unit switches, facilitating the use by operators with different backgrounds.

[0059] The pusher 105 includes a sliding block 129, a pusher piston 130, a pusher screw 131, and a pusher motor 132. The sliding block 129 is slidably disposed within the second cavity 108. The pusher piston 130 is fixed to the sliding block 129. The pusher screw 131 is threadedly connected to the sliding block 129. The output end of the pusher motor 132 is connected to the pusher screw 131.

[0060] The sliding block 129 is installed within the second cavity 108 of the support cylinder 101 and can slide freely along the axial direction within the cavity. The design of the sliding block 129 needs to take into account the requirements of low friction and high precision to ensure smooth and controllable movement. The pusher piston 130 fixed to the sliding block 129 acts directly on the first cavity 102 to drive the liquid flow or extract samples by applying pressure or releasing pressure. The sealing performance of the piston is crucial and must be able to maintain good airtightness or liquid tightness to prevent any unnecessary leakage.

[0061] The pusher screw 131 is threadedly connected to the sliding block 129. When the screw rotates, it drives the sliding block 129 and the piston to move in a straight line. This mechanical transmission method provides precise position control and stable force transmission, which is very suitable for application scenarios that require fine adjustment.

[0062] Finally, the pusher motor 132 serves as the power source, and its output end is connected to the pusher screw 131 to drive the screw to rotate through the rotation of the electric motor. The selection of the motor should be based on factors such as efficiency, torque output, and response speed to ensure that it can quickly respond to the instructions of the control unit 127 and achieve smooth and precise motion control.

[0063] Second Embodiment The present invention also provides a tumor puncture and extraction system, including the tumor puncture and extraction device described above.

[0064] The present invention not only provides an innovative tumor puncture and extraction device but also further expands to a complete tumor puncture and extraction system. This system aims to integrate a variety of advanced technologies and components to form an efficient, safe, and easy-to-operate overall solution to meet the needs of precise tumor tissue sample collection in the modern medical environment.

[0065] To improve the accuracy of puncture, the system can be optionally equipped with an advanced imaging navigation module. This module uses ultrasonic, CT scan, or MRI imaging technology to provide real-time three-dimensional image guidance for doctors to ensure that the needle 104 can accurately reach the target position.

[0066] The sample processing unit includes a sample collection bottle, a preservation liquid supply system, a label printer, etc., which facilitates the immediate processing and marking of the obtained samples and simplifies the subsequent laboratory analysis process.

[0067] Considering the hygienic requirements for the use of medical devices, the system is equipped with special disinfection and sterilization equipment, such as autoclaves or ethylene oxide sterilization cabinets, to ensure that all parts in contact with patients can be thoroughly cleaned before and after use.

[0068] This tumor puncture and aspiration system is applicable to medical institutions at all levels and has broad application prospects in multiple departments such as oncology and surgery. It not only improves the success rate and safety of tumor tissue sample collection, but also shortens the entire diagnosis and treatment cycle and reduces the risks and pain of patients.

[0069] The above-disclosed is only a preferred embodiment of the present invention. Of course, it cannot be used to limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A tumor puncture extraction device, characterized in that: It includes a support tube, a first cavity, a switching head, a needle and a pusher; A second cavity is provided in the support tube, and the first cavity is communicated with the support tube; The switching head comprises a connecting tube, a slider, a plug and an elastic member, the connecting tube having a liquid inlet and a liquid extraction port, the connecting tube being arranged at one side of the supporting tube, the slider being slidably arranged at one side of the liquid inlet, the plug being slidably arranged in the liquid extraction port, the plug having an inclined surface at a side close to the slider, the elastic member being used to support the plug, and when the first cavity is installed, the slider pushes the plug to lift up to close the liquid extraction port and open the liquid inlet at the same time; when the first cavity is removed, the plug pushes the slider to reset to close the liquid inlet and open the liquid extraction port under the support of the elastic member; The needle is connected to the connecting tube; The pusher is slidably disposed in the second cavity.

2. A tumor puncture extraction device as claimed in claim 1, characterized in that: The first cavity includes a first cavity body and a first connector, the support tube includes a support tube body and a second connector, the first connector is connected to the second connector, and the second connector is in a closed state when not connected.

3. A tumor puncture extraction device as claimed in claim 2, characterized in that: The first cavity further comprises a partition and a liquid outlet pressure valve, wherein the partition is arranged below the first cavity body, the liquid outlet pressure valve is connected with the partition and is close to the slider, and the liquid outlet pressure valve opens after reaching a preset pressure value.

4. A tumor puncture extraction device as claimed in claim 3, characterized in that: The support tube has a connecting groove, and the first cavity has a connecting block, and the connecting block is detachably connected to the connecting groove.

5. A tumor puncture and extraction device as claimed in claim 4, characterized in that: The switching head further comprises a first sealing ring, which is arranged on one side of the liquid inlet.

6. A tumor puncture and extraction device as claimed in claim 5, characterized in that: The connecting tube comprises a connecting tube body, a sealing ring and a plurality of buckles. The plurality of buckles are rotatably arranged around the connecting tube body and correspond to the slots arranged on the supporting tube. The sealing ring is arranged between the connecting tube body and the supporting tube.

7. A tumor puncture and extraction device as claimed in claim 6, characterized in that: The plug includes a plug body, a connecting rod, a sealing head and a second sealing ring. The plug body has an inclined surface and is arranged on one side of the elastic member. The connecting rod is fixedly connected to the plug body. The sealing head has a flow hole. The sealing head is fixedly connected to the connecting rod and is located in the liquid extraction port. The second sealing ring is fixed in the liquid extraction port and is arranged corresponding to the sealing head.

8. A tumor puncture and extraction device as claimed in claim 7, characterized in that: The plug also includes a second sealing ring, which is fixed on the second sealing ring and located between the second sealing ring and the sealing head.

9. A tumor puncture and extraction device as claimed in claim 8, characterized in that: The pusher includes a sliding block, a pushing piston, a pushing screw and a pushing motor. The sliding block is slidably arranged in the second cavity, the pushing piston is fixed on the sliding block, the pushing screw is threadedly connected to the sliding block, and the output end of the pushing motor is connected to the pushing screw.

10. A tumor puncture extraction system, characterized in that: It comprises a tumor puncture and extraction device as described in any one of claims 1 to 9.

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