Intelligent tumor sampling device and method

Abstract

The invention relates to the technical field of medical instruments, in particular to an intelligent tumor sampling device and method.The intelligent tumor sampling device comprises a sampling needle and a controller which are in signal connection, the sampling needle is divided into a plurality of needle bodies which are sequentially connected in a sleeved mode, and the front needle body is connected to the outer side wall of the rear needle body in a sleeved mode; telescopic assemblies are fixedly connected between the needle bodies, the telescopic assemblies are used for expanding the needle bodies step by step to stretch into the body of a patient through inflation of a pneumatic machine, each telescopic assembly comprises corrugated pipes which are symmetrically arranged, and the gas volumes of the adjacent corrugated pipes are consistent; a first buckle assembly is arranged on the corrugated pipe, a second buckle assembly is arranged on the inner side wall of the bottom of the front section of the needle body, a tail end cavity is formed in the tail end, away from the handle, of the needle body, and an adsorption assembly is arranged on the tail end cavity. Through combination of pneumatic driving and mechanical locking, accurate control over the puncture depth and stable unfolding and safe recovery of the needle body are achieved, meanwhile, the operation process is simplified through the gas circuit reuse technology, and the safety, efficiency and reliability of a tumor sampling operation are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an intelligent tumor sampling device and method. Background Art

[0002] Tumor sampling is a crucial step in tumor diagnosis and treatment. By obtaining tumor tissue samples for pathological analysis, the nature, type, and stage of the tumor can be determined, providing an important basis for formulating personalized treatment plans. Traditional tumor sampling methods (such as surgical resection or percutaneous biopsy) often cause relatively large trauma and have problems such as inaccurate sampling and severe tissue damage. Therefore, developing a minimally invasive, accurate, and efficient tumor sampling device and method is of great significance, which can improve the diagnostic accuracy, reduce patient pain, and lower the surgical risk.

[0003] According to the patent publication number CN201811052540.9, this tumor sampling device relies on an infrared sensing probe to sense the protrusion at the connection between the drainage needle and the puncture needle, and then converts it into the depth of the puncture needle sensed. However, during the sampling process, the infrared sensing probe is easily affected by signal interference or positioning errors, resulting in the sampling needle being unable to accurately reach the target position. Moreover, this device lacks an effective locking mechanism, and the needle body is prone to sliding or deviation during the deployment process, causing the sampling path to deviate from the target position and even damaging the surrounding healthy tissues. Summary of the Invention

[0004] To solve the above problems, the present invention provides an intelligent tumor sampling device and method. By combining pneumatic drive and mechanical locking, precise control of the puncture depth, stable deployment, and safe recovery of the needle body are achieved. At the same time, the operation process is simplified by using the air circuit multiplexing technology, significantly improving the safety, efficiency, and reliability of the tumor sampling surgery.

[0005] To achieve the above object, the technical solution of the present invention is as follows: An intelligent tumor sampling device includes a sampling needle and a controller that are signal-connected to each other. A hollow handle is fixedly connected to the sampling needle, and the handle is communicated with a pneumatic motor, and the pneumatic motor is signal-connected to the controller. The sampling needle is divided into several sections of needle bodies sleeved in sequence, and each previous section of the needle body is sleeved on the outer side wall of the subsequent section of the needle body. An intake channel is symmetrically provided in each needle body, and a telescopic component for inflating through the pneumatic motor to make the needle body gradually expand and extend into the patient's body is fixedly connected between the needle bodies. The intake channels correspond to and communicate with the telescopic components one by one. Each telescopic component includes symmetrically arranged bellows. One end of each bellows is fixedly connected to the inner top wall of the previous section of the needle body, and the other end of each bellows is fixedly connected to the outer side wall near the top of the subsequent section of the needle body, and the gas volume of adjacent bellows is the same;

[0006] The corrugated pipe is provided with a first buckle assembly, and the inner side wall of the bottom of the previous section of the needle body is provided with a second buckle assembly corresponding to the first buckle assembly. Both the first buckle assembly and the second buckle assembly are used to fix the needle body by gas drive. The end of the needle body far from the handle is provided with an end cavity, and the end cavity is provided with an adsorption assembly communicated with the telescopic assembly. The adsorption assembly is used to push into the soft tissue through air pressure and obtain the target tissue by extracting air pressure.

[0007] The technical principle of the above solution is as follows:

[0008] The air motor conveys gas to the air inlet channel of the needle body through the handle, and the gas is injected into the symmetrically distributed corrugated pipes. Since the gas volumes of adjacent corrugated pipes are the same, each corrugated pipe expands synchronously during inflation, pushing the latter section of the needle body to gradually unfold along the outside of the previous section of the needle body. By controlling the gas delivery volume of the air motor, the expansion length of the corrugated pipe can be accurately calculated, and then the total puncture depth of the needle body inserted into the patient's body can be determined. A first buckle assembly and a second buckle assembly are provided at the end of each section of the needle body. When the corrugated pipe is inflated until the needle body is fully unfolded, the gas drives the first buckle assembly to combine with the second buckle assembly to fix the position of the needle body. The adsorption assembly at the end of the needle body shares the air path with the telescopic assembly. During the inflation stage, the air pressure pushes the needle body to gradually unfold and penetrate into the target tissue; during sampling, the air motor switches to the extraction mode, and a negative pressure is formed in the end cavity through the adsorption assembly to suck the target tissue into the cavity. After sampling is completed, the air motor discharges the gas in the corrugated pipe, and the corrugated pipe relies on elastic contraction to reset, driving the needle body to fold and retract step by step. The buckle assembly automatically unlocks as the air pressure decreases, avoiding the resistance during recovery. Finally, the sampling needle in the folded state can be safely withdrawn from the patient's body to complete sampling.

[0009] The above solution has the following beneficial effects:

[0010] 1. In this solution, based on the consistency of the gas volume of the corrugated pipe and the calculation of the gas delivery volume, the air motor directly correlates the inflation volume with the unfolding length of the needle body, realizing real-time feedback and control of the puncture depth. There is no need to rely on external sensors (such as infrared or photoelectric sensors), avoiding the depth deviation caused by signal interference or positioning error of traditional devices, and ensuring that the sampling needle accurately reaches the target tumor position.

[0011] 2. In this solution, the corrugated pipes expand synchronously during inflation, pushing the needle body to gradually unfold. At the same time, the gas-driven first buckle assembly and the second buckle assembly automatically lock when the needle body is fully unfolded, fixing the position of the needle body through mechanical meshing, preventing damage to healthy tissues due to sliding or offset during the puncture process, and improving the operation safety.

[0012] 3. In this solution, the adsorption component and the bellows share the air circuit of the air motor. During the inflation stage, it pushes the needle body to unfold and pierce into the target tissue. After switching to the negative pressure mode, it directly extracts gas through the same air circuit, and uses the negative pressure in the end cavity to quickly adsorb the target tissue. The integrated air circuit design simplifies the structural complexity, reduces the pneumatic switching time, and improves the sampling efficiency.

[0013] 4. In this solution, after the sampling is completed, the air motor discharges gas. The bellows drives the needle body to fold and reset step by step by elastic contraction. The buckle component automatically unlocks with the decrease of air pressure to avoid the recovery resistance. The folded sampling needle can safely withdraw from the patient's body, reducing the risk of secondary damage to the surrounding tissues during the withdrawal process.

[0014] Furthermore, each first buckle component includes a fixing ring fixedly connected to the bottom of the bellows. The bellows is fixedly connected to the inner side wall of the fixing ring. Among them, an airbag is fixedly connected in the fixing groove. The airbag is fixedly connected to a fixing block on the inner side wall of the needle body near the front end. Each second buckle component includes a buckle groove corresponding to the fixing block on the inner side wall of the previous section of the needle body. There is a gas hole communicating between the airbag and the bellows.

[0015] Beneficial effects: When the bellows is inflated until the needle body is fully unfolded, gas enters the airbag through the gas hole, pushing the fixing block to embed into the buckle groove to achieve the mechanical locking of the needle body position. This mechanism does not require an additional power source and ensures a fast and reliable locking process at the same time. The mechanical meshing structure of the fixing block and the buckle groove effectively prevents the needle body from sliding or shifting during puncture or sampling, avoiding secondary damage to the surrounding healthy tissues, and significantly improving the safety and stability of the operation.

[0016] Furthermore, the contact surfaces of the fixing block and the buckle groove are both serrated structures, and anti-slip patterns corresponding to the serrated structures of the fixing block are provided on the inner side walls of the buckle grooves.

[0017] Beneficial effects: The serrated structures on the contact surfaces of the fixing block and the buckle groove, as well as the anti-slip patterns on the inner side walls of the buckle grooves, form a multi-meshing structure, significantly increasing the friction force of the contact surface. This design effectively prevents the fixing block from sliding or loosening due to external forces after locking, ensuring that the needle body always remains stable during puncture and sampling.

[0018] Furthermore, the adsorption component includes a piston block slidably connected in the end cavity. A needle sheath is fixedly connected to the piston block. A needle core is fixedly connected to the end cavity. The needle core penetrates through the needle sheath and extends to the end of the needle sheath away from the piston block.

[0019] Beneficial effects: The sliding connection design of the piston block and the needle sheath enables the needle sheath to move under the action of air pressure. After the needle core pierces the target tissue, the air motor pushes the piston block to make the needle sheath penetrate deeper into the tissue. Subsequently, the target tissue is sucked into the needle sheath through negative pressure adsorption, achieving fast and efficient tissue sampling and improving the sampling success rate.

[0020] Furthermore, a number of adsorption holes are formed on the inner wall of the needle sheath.

[0021] Beneficial effects: The number of adsorption holes on the inner wall of the needle sheath significantly increases the contact area of negative pressure adsorption, enabling the target tissue to be more quickly and evenly sucked into the needle sheath, thereby improving the sampling efficiency and shortening the operation time.

[0022] Furthermore, a flow sensor is provided on the air motor, and the flow sensor is signal-connected to the controller.

[0023] Beneficial effects: The flow sensor can monitor the air output of the air motor in real time, providing accurate data feedback to the controller. Based on the air output monitored by the flow sensor and combined with the gas volume and expansion length of the bellows, the controller can accurately calculate the deployment length and puncture depth of the needle body, ensuring that the sampling needle accurately reaches the target tumor position and improving the accuracy of the operation.

[0024] Furthermore, an adjustment knob is provided on the handle, and the adjustment knob is signal-connected to the controller.

[0025] Beneficial effects: The adjustment knob is provided on the handle, facilitating the operator to quickly and intuitively adjust parameters such as the air output of the air motor or the puncture depth during the operation. Through the signal connection between the knob and the controller, the operator can accurately control the deployment, adsorption, and recovery processes of the sampling needle, improving the convenience and accuracy of the operation.

[0026] An intelligent tumor sampling method includes the following steps:

[0027] Step 1, preparation: When sampling a tumor, align the sampling needle with the sampling site of the patient, start the air motor, and supply air to the bellows through the air intake channel to expand the bellows and push the needle body to deploy step by step and extend into the patient's body;

[0028] Step 2, gas monitoring: Real-time monitor the air output through the flow sensor, and calculate and display the puncture depth in combination with the expansion characteristics of the bellows;

[0029] Step 3, adsorbing the sample: When the needle body reaches the target position, start the adsorption component, and suck the tumor tissue into the end cavity through the extracted air pressure;

[0030] Step 4, withdrawing the needle body: After sampling is completed, stop supplying air, discharge the air pressure in the bellows, and rely on the elastic restoring force of the bellows to contract, driving the needle body to fold and recover;

[0031] Step 5, sample recovery: Take out the tumor tissue from the end cavity to complete the sampling operation.

[0032] Furthermore, the calculation method of the puncture depth in Step 2 is:

[0033] Puncture depth = (gas delivery volume / gas volume required for a single - segment corrugated pipe) × expansion length of a single - segment corrugated pipe.

[0034] Furthermore, in step three, the working method of the adsorption component is as follows: The controller starts the pneumatic motor to extract the air pressure in the end cavity. The piston block slides under the action of the air pressure, enabling the tumor tissue to enter the end cavity through the adsorption holes on the needle sheath. At the same time, after the tumor tissue enters the end cavity, it squeezes the piston block, driving the needle sheath to move, and the tumor tissue is efficiently adsorbed and retained in the end cavity.

[0035] Advantageous effects: By using the flow sensor to monitor the gas delivery volume in real - time, combined with the expansion characteristics of the corrugated pipe, the puncture depth is accurately calculated and displayed using the formula, ensuring that the sampling needle can accurately reach the target tumor position, avoiding the errors caused by traditional devices relying on external sensors, and improving the accuracy and reliability of the operation.

[0036] Precise puncture depth control and an efficient negative - pressure adsorption mechanism avoid damage to surrounding healthy tissues caused by over - puncture or excessive adsorption force. At the same time, the elastic restoring force of the corrugated pipe enables the needle body to fold and retract smoothly, further reducing the risk of secondary tissue damage during the withdrawal process and improving the safety of the operation.

[0037] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Brief Description of the Drawings

[0038] Figure 1 Isometric schematic diagram of an embodiment of the intelligent tumor sampling device of the present invention;

[0039] Figure 2 In the embodiment of the intelligent tumor sampling device of the present invention Figure 1 Enlarged schematic diagram of part A;

[0040] Figure 3 Front - view cross - sectional schematic diagram of the needle body in the embodiment of the intelligent tumor sampling device of the present invention;

[0041] Figure 4 In the embodiment of the intelligent tumor sampling device of the present invention Figure 3 Enlarged schematic diagram of part B;

[0042] Figure 5 In the embodiment of the intelligent tumor sampling device of the present invention Figure 1 Axonometric cross - sectional schematic diagram of part C;

[0043] Figure 6 Schematic diagram of the method steps in the embodiment of the intelligent tumor sampling device and method of the present invention.

[0044] The reference numerals in the accompanying drawings of the specification include: 1. handle; 2. sampling needle; 3. end cavity; 4. needle body; 5. corrugated pipe; 6. air inlet channel; 7. air hole; 8. airbag; 9. fixing block; 10. buckle groove; 11. piston block; 12. needle core; 13. needle sheath. Detailed implementation manners

[0045] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It 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 therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0048] The following is a further detailed description through specific implementation manners:

[0049] Embodiment 1:

[0050] As shown in the attached Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown: An intelligent tumor sampling device includes a sampling needle 2 and a controller that are signal-connected to each other. A hollow handle 1 is integrally formed on the sampling needle 2. An adjustment knob is provided on the handle 1, and the adjustment knob is signal-connected to the controller. The handle 1 is connected to a pneumatic motor, and the pneumatic motor is signal-connected to the controller. Before performing a tumor sampling operation, the pneumatic motor is connected to the handle 1, and the pneumatic motor is started. The sampling needle 2 is divided into several sections of needle bodies 4 that are sequentially sleeved. Each previous section of the needle body 4 is sleeved on the outer wall of the subsequent section of the needle body 4. An intake channel 6 is symmetrically provided in each needle body 4. A telescopic assembly for inflating the needle bodies 4 through the pneumatic motor to expand and extend into the patient's body is fixedly connected between the needle bodies 4. The intake channels 6 correspond to and are communicated with the telescopic assemblies one by one. Each telescopic assembly includes bellows 5 that are symmetrically arranged. One end of each bellows 5 is welded to the inner top wall of the previous section of the needle body 4, and the other end of each bellows 5 is welded to the outer wall near the top of the subsequent section of the needle body 4. And the gas volume of adjacent bellows 5 is the same. A flow sensor is provided on the pneumatic motor, and the flow sensor is signal-connected to the controller. Since the traditional sampling needle 2 lacks depth feedback or relies on feedback depths such as infrared sensors or photoelectric sensors, the puncture depth during sampling is inaccurate. Therefore, in this embodiment, the pneumatic motor is used to supply gas into the bellows 5. After the bellows 5 expand, they push the needle bodies 4 to expand and extend into the patient's body. At this time, the flow sensor monitors the gas supply volume in real time. The controller can not only calculate the puncture depth positively according to the gas supply volume, the expansion length of the bellows 5, and the gas volume required for a single-end bellows 5, but also calculate the number of expansion segments of the bellows 5 reversely according to the puncture depth and the gas supply volume. Furthermore, whether the elongation distance of the needle body 4 is controlled by presetting the puncture depth before the operation or the puncture depth is monitored by the elongation distance of the needle body 4 can be calculated in real time, ensuring that the sampling needle 2 accurately reaches the target position.

[0051] After the needle bodies 4 are expanded and in place step by step, during the puncture process, the needle bodies 4 are prone to shift or slide, which is likely to cause secondary damage to the surrounding healthy tissues. Therefore, as shown in the appendix Figure 4As shown in the figure, a first buckle assembly is provided on the corrugated pipe 5, and a second buckle assembly corresponding to the first buckle assembly is provided on the inner side wall of the bottom of the previous section of the needle body 4. The first buckle assembly and the second buckle assembly are both used to fix the needle body 4 by gas drive. The first buckle assembly includes a fixing ring integrally formed at the bottom of the corrugated pipe 5, and the corrugated pipe 5 is bonded to the inner side wall of the fixing ring. Among them, an airbag 8 is snap-connected in the fixing groove, and a fixing block 9 is bonded to one side of the inner side wall of the airbag 8 close to the previous section of the needle body 4. The second buckle assembly includes a buckle groove 10 corresponding to the fixing block 9 on the inner side wall of the previous section of the needle body 4. The contact surfaces of the fixing block 9 and the buckle groove 10 are both serrated structures, and anti-slip patterns corresponding to the serrated structures of the fixing block 9 are provided on the inner side walls of the buckle groove 10. An air hole 7 is communicated between the airbag 8 and the corrugated pipe 5. When gas enters the corrugated pipe 5 and the corrugated pipe 5 pushes the next section of the needle body 4 to the end of the previous section of the needle body 4, a small part of the gas enters the airbag 8 through the air hole 7. After the airbag 8 is inflated, it pushes the fixing block 9 into the buckle groove 10, so that the corrugated pipe 5 is locked at the end of the previous section of the needle body 4, thereby fixing the unfolded position of the needle body 4. The serrated structures and anti-slip patterns of the fixing block 9 and the buckle groove 10 are engaged to enhance the friction force and prevent the needle body 4 from sliding.

[0052] At the end of the needle body 4 away from the handle 1, there is a terminal cavity 3. An adsorption assembly communicated with the telescopic assembly is provided on the terminal cavity 3. The adsorption assembly is used to push into the soft tissue through air pressure and obtain the target tissue by extracting air pressure. The adsorption assembly includes a piston block 11 slidably connected in the terminal cavity 3. A needle sheath 13 is welded on the piston block 11. A plurality of adsorption holes are opened on the inner side wall of the needle sheath 13. A needle core 12 is welded on the terminal cavity 3. The needle core 12 penetrates through the needle sheath 13 and extends to the end of the needle sheath 13 away from the piston block 11. When the needle sheath 13 and the needle core 12 reach the sampling tissue, the needle core 12 pierces the tissue, and the gas of the air motor continuously pushes the piston block 11, so that the needle sheath 13 enters the sampling tissue. By the controller, the air pressure is extracted, so that the piston block 11 in the terminal cavity 3 slides to the side away from the needle sheath 13 under the action of air pressure. At the same time, the cavity on this side forms a negative pressure, adsorbing the sampling tissue into the needle sheath 13. At the same time, the adsorption holes improve the adsorption rate of the sampling tissue.

[0053] After the sampling tissue enters the terminal cavity 3, during the process of the piston block 11 sliding reversely under the push of the negative pressure and the sampling tissue squeezing the piston block 11 to slide reversely, the gas in the terminal cavity 3 is discharged step by step. At the same time, the elastic restoring force of the corrugated pipe 5 contracts and resets, driving the needle body 4 to fold and retract. When the air pressure in the corrugated pipe 5 decreases, the gas in the airbag 8 is discharged at the same time, and the fixing block 9 is driven by the airbag 8 to reset and return to the fixing groove, so that the buckle groove 10 and the fixing block 9 are automatically unlocked, facilitating the folding of the needle body 4. The folded sampling needle 2 is taken out of the patient's body to complete the sampling operation.

[0054] Embodiment 2:

[0055] As shown in the attached Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , a method for intelligent tumor sampling, which is different from that of Embodiment 1, includes the following steps:

[0056] Step 1, Preparation: When sampling the tumor, align the sampling needle 2 with the sampling site of the patient, start the air motor, and send air into the corrugated pipe 5 through the air inlet channel 6, so that the corrugated pipe 5 expands and pushes the needle body 4 to expand step by step and extend into the patient's body.

[0057] Step 2, Gas monitoring: Real-time monitor the gas delivery volume through the flow sensor, and combine the expansion characteristics of the corrugated pipe 5 to calculate and display the puncture depth. The calculation method of the puncture depth is:

[0058] Puncture depth = (gas delivery volume / gas volume required for a single-section corrugated pipe) × expansion length of a single-section corrugated pipe.

[0059] Step 3, Adsorb the sample: After the needle body 4 reaches the target position, start the adsorption component. The working method of the adsorption component is: start the air motor through the controller to extract the air pressure in the end cavity 3, the piston block 11 slides under the action of the air pressure, so that the tumor tissue enters the end cavity 3 through the adsorption holes on the needle sheath 13. At the same time, the tumor tissue squeezes the piston block 11 after entering the end cavity 3, drives the needle sheath 13 to move, and sucks the tumor tissue into the end cavity 3 by extracting the air pressure.

[0060] Step 4, Remove the needle body: After sampling is completed, stop the air supply, discharge the air pressure in the corrugated pipe 5, and rely on the elastic restoring force of the corrugated pipe 5 to contract, driving the needle body 4 to fold and retract.

[0061] Step 5, Sample recovery: Take out the tumor tissue from the end cavity 3 to complete the sampling operation.

[0062] Obviously, the above embodiments are only examples given for clear illustration, and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An intelligent tumor sampling device, comprising a sampling needle (2) and a controller that are signal-connected to each other, characterized in that, A hollow handle (1) is fixedly connected to the sampling needle (2). The handle (1) is connected to a pneumatic motor, and the pneumatic motor is signal-connected to a controller. The sampling needle (2) is divided into several sequentially sleeved needle bodies (4). The previous needle body (4) is sleeved on the outer side wall of the next needle body (4). An air inlet channel (6) is symmetrically arranged in each needle body (4). A telescopic component for expanding the needle bodies (4) step by step into the patient's body by inflating through the pneumatic motor is fixedly connected between the needle bodies (4). The air inlet channels (6) correspond to and communicate with the telescopic components one by one. Each telescopic component includes symmetrically arranged bellows (5). One end of each bellows (5) is fixedly connected to the inner top wall of the previous needle body (4), and the other end of each bellows (5) is fixedly connected to the outer side wall near the top of the next needle body (4), and the gas volume of adjacent bellows (5) is the same; A first buckle component is arranged on the bellows (5). A second buckle component corresponding to the first buckle component is arranged on the inner side wall at the bottom of the previous needle body (4). The first buckle component and the second buckle component are both used to fix the needle body (4) by gas drive. A terminal cavity (3) is arranged at the end of the needle body (4) far from the handle (1). An adsorption component communicating with the telescopic component is arranged on the terminal cavity (3). The adsorption component is used to push into the soft tissue through air pressure and obtain the target tissue by pumping air pressure.

2. The intelligent tumor sampling device and method according to claim 1, characterized in that, Each first buckle component includes a fixing ring fixedly connected to the bottom of the bellows (5). The bellows (5) is fixedly connected to the inner side wall of the fixing ring. Among them, an airbag (8) is fixedly connected in the fixing groove. A fixing block (9) is fixedly connected to one side of the inner side wall of the airbag (8) close to the previous needle body (4). Each second buckle component includes a buckle groove (10) corresponding to the fixing block (9) on the inner side wall of the previous needle body (4). An air hole (7) communicates between the airbag (8) and the bellows (5).

3. The intelligent tumor sampling device according to claim 2, wherein, The contact surfaces of the fixing block (9) and the buckle groove (10) are both serrated structures. Anti-slip patterns corresponding to the serrated structures of the fixing block (9) are arranged on the inner side walls of the buckle groove (10).

4. The intelligent tumor sampling device according to claim 3, wherein The adsorption component includes a piston block (11) slidably connected in the terminal cavity (3). A needle sheath (13) is fixedly connected to the piston block (11). A needle core (12) is fixedly connected to the terminal cavity (3). The needle core (12) penetrates through the needle sheath (13) and extends to one end of the needle sheath (13) far from the piston block (11).

5. The intelligent tumor sampling device according to claim 4, wherein A plurality of adsorption holes are formed on the inner side wall of the needle sheath (13).

6. The intelligent tumor sampling device according to claim 5, wherein, A flow sensor is arranged on the pneumatic motor, and the flow sensor is signal-connected to the controller.

7. The intelligent tumor sampling device according to claim 6, wherein, An adjustment knob is arranged on the handle (1), and the adjustment knob is signal-connected to the controller.

8. An intelligent tumor sampling method, characterized in that, The intelligent tumor sampling device according to claims 1 to 7 includes the following steps: Step 1, preparation work: When sampling a tumor, aim the sampling needle (2) at the sampling site of the patient, start the pneumatic motor, and send air into the bellows (5) through the air inlet channel (6) to expand the bellows (5) and push the needle bodies (4) to expand step by step and extend into the patient's body; Step 2, gas monitoring: Real-time monitor the air delivery volume through the flow sensor, and calculate and display the puncture depth in combination with the expansion characteristics of the bellows (5); Step 3, adsorbing the sample: After the needle body (4) reaches the target position, start the adsorption component, and aspirate the tumor tissue into the end cavity (3) by pumping air pressure. Step 4, removing the needle body: After sampling is completed, stop the air supply, the air pressure in the bellows (5) is discharged, and the bellows (5) contracts relying on its elastic restoring force, driving the needle body (4) to fold and retract. Step 5, sample recovery: Take out the tumor tissue from the end cavity (3) to complete the sampling operation.

9. The intelligent tumor sampling method according to claim 8, characterized in that, The calculation method of the puncture depth in Step 2 is as follows: Puncture depth = (air supply volume / gas volume required for a single section of bellows) × expansion length of a single section of bellows.

10. The intelligent tumor sampling method according to claim 9, wherein In Step 3, the working method of the adsorption component is: Start the air motor through the controller to pump the air pressure in the end cavity (3), the piston block (11) slides under the action of air pressure, so that the tumor tissue enters the end cavity (3) through the adsorption holes on the needle sheath (13). At the same time, after the tumor tissue enters the end cavity (3), it squeezes the piston block (11), driving the needle sheath (13) to move, and the tumor tissue is efficiently adsorbed and retained in the end cavity (3).

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