Vacuum suction system and biopsy sampling equipment

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a vacuum suction system and biopsy sampling equipment, the vacuum suction system comprises a vacuum container, a first main pipeline is connected between the vacuum container and a negative pressure pump, and the vacuum container is further connected with a second main pipeline used for being communicated with a biopsy needle; each branch pressure relief pipeline is connected to the corresponding branch position of the first main pipeline and / or the second main pipeline, each branch pressure relief pipeline is provided with a branch pipeline valve, and the branch pipeline valves can be communicated with or cut off the corresponding branch pressure relief pipelines; and the main pipeline valve is arranged on the first main pipeline or the second main pipeline, and the main pipeline valve is arranged between the two adjacent branch positions, so that the first main pipeline and the second main pipeline are communicated in the suction mode, and the corresponding branch pressure relief pipelines are separated in the pressure relief mode. According to the utility model, the residual pressure in the vacuum container passage and the biopsy needle passage can be quickly and effectively removed, the explosion risk of sampling operation is effectively eliminated, and the phenomenon that the residual pressure drags focus tissues is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, especially relates to a vacuum suction system and biopsy sampling equipment. BACKGROUND

[0002] The biopsy sampling equipment is a surgical equipment for disease diagnosis and treatment. During surgery, an auxiliary image guides the process of puncturing tissue, and then the lesion tissue is cut and collected to achieve minimally invasive treatment or provide a sample for subsequent pathological examination. In order to successfully collect the cut lesion tissue, a vacuum suction system is provided in many biopsy sampling equipment to suction the cut sampling tissue in the biopsy needle into the collection cavity.

[0003] However, the pressure relief channel of the existing vacuum suction system is relatively single, which leads to unstable pressure relief and cannot quickly release the residual pressure in the biopsy needle, which easily drags the lesion tissue and causes unintended damage. UTILITY MODEL CONTENT

[0004] In view of the above-mentioned deficiencies of the prior art, the purpose of the utility model is to provide a vacuum suction system and biopsy sampling equipment to solve the technical problem that the lesion tissue is easily dragged due to the inability to quickly release the residual pressure in the biopsy needle in the prior art.

[0005] To achieve the above-mentioned purposes and other related purposes, the technical scheme of the utility model is as follows:

[0006] A vacuum suction system for providing suction power for a biopsy needle, comprising:

[0007] A negative pressure pump;

[0008] A vacuum container, a first main pipeline is connected between the vacuum container and the negative pressure pump, and the vacuum container is also connected with a second main pipeline for communicating with the biopsy needle;

[0009] At least two branch pressure relief pipelines, each branch pressure relief pipeline is connected at a corresponding branch position of the first main pipeline and / or the second main pipeline, and a branch pipeline valve is arranged on each branch pressure relief pipeline, which can communicate or block the corresponding branch pressure relief pipeline;

[0010] A main pipeline valve is arranged on the first main pipeline or the second main pipeline, and the main pipeline valve is arranged between two adjacent branch positions, so that the main pipeline valve is opened to communicate the pipeline gas between the two adjacent branch positions in the suction mode, and the main pipeline valve is closed to block the pipeline between the two adjacent branch positions in the pressure relief mode.

[0011] Optionally, at least one of the branch pressure relief pipelines is connected at a first branch position of the second main pipeline, and a main pipeline valve is arranged between the first branch position and the vacuum container to block the pipeline between the vacuum container and the biopsy needle in the pressure relief mode.

[0012] Optionally, one of the branch pressure relief pipelines is a first branch pressure relief pipeline connected at a corresponding branch position of the first main pipeline, and another one of the branch pressure relief pipelines is a second branch pressure relief pipeline connected at the first branch position.

[0013] Alternatively, two of the branch pressure relief pipelines are connected to the second main pipeline, one of the branch pressure relief pipelines is connected at the first branch position, and the other branch pressure relief pipeline is connected at a second branch position of the second main pipeline, the second branch position being arranged between the first branch position and the vacuum container, and the main pipeline valve is arranged between the first branch position and the second branch position.

[0014] Optionally, the branch pipeline valve of the first branch pressure relief pipeline is a pressure relief valve, the branch pipeline valve of the second branch pressure relief pipeline is a first pinch valve, and the main pipeline valve is a second pinch valve.

[0015] Optionally, in the suction mode, the negative pressure pump is turned on, the second pinch valve is opened, the pressure relief valve is in a non-full open state, and the first pinch valve is closed; in the pressure relief mode, the negative pressure pump is turned off, the second pinch valve is closed, the pressure relief valve is fully open, and the first pinch valve is opened.

[0016] Optionally, the vacuum suction system further comprises a negative pressure collection member and a negative pressure detection pipeline, the negative pressure detection pipeline is connected to the first main pipeline, the negative pressure detection pipeline is connected to the negative pressure collection member, and the negative pressure detection pipeline, the first branch pressure relief pipeline, and the first main pipeline are connected at the same branch position through a first pipeline joint.

[0017] Optionally, the vacuum suction system further comprises a negative pressure collection member and a negative pressure detection pipeline, the negative pressure detection pipeline is connected to the first main pipeline, and the negative pressure detection pipeline is connected to the negative pressure collection member.

[0018] Optionally, the vacuum suction system further comprises a controller, the controller is connected to the negative pressure collection member, the main pipeline valve, and each branch pipeline valve.

[0019] Optionally, the negative pressure pump has a pump air inlet and a pump air outlet, the pump air outlet is connected to a silencer; and / or, the vacuum suction system further comprises a filter arranged on the first main pipeline.

[0020] Based on the same concept, the utility model also provides a biopsy sampling device, including biopsy needle and vacuum suction system as described above, the second main pipeline of vacuum suction system is connected with biopsy needle.

[0021] As described above, the utility model has the following beneficial effects:

[0022] By setting branch pressure relief pipeline at corresponding branch position of first main pipeline and / or second main pipeline, the state of main pipeline valve and each branch pipeline valve can be controlled respectively to realize the switching of suction mode and pressure relief mode, and the multiple pressure relief channels are independently operated in the pressure relief mode, which can quickly and effectively remove the residual pressure in vacuum container passage and biopsy needle passage, and is beneficial to avoid the phenomenon that residual pressure drags lesion tissue. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of vacuum suction system of the utility model embodiment;

[0024] Figure 2 It is control flow chart (suction state) of vacuum suction system of the utility model embodiment;

[0025] Figure 3 It is airway passage schematic diagram (suction state) of vacuum suction system of the utility model embodiment;

[0026] Figure 4 It is control flow chart (pressure relief state) of vacuum suction system in the utility model embodiment;

[0027] Figure 5 It is airway passage schematic diagram (pressure relief state) of vacuum suction system in the utility model embodiment.

[0028] REFERENCE SIGNS

[0029] 10-negative pressure pump;11-pump air inlet;12-pump air outlet;13-silencer;

[0030] 20-filter;

[0031] 30-vacuum container;31-barrel air inlet;32-barrel air outlet;

[0032] 40-biopsy needle;

[0033] 110-pressure relief valve;120-negative pressure collection;130-first pipe joint;140-second pipe joint;150-first pinch valve;160-main pipeline valve;170-fixed joint;

[0034] 210 - first main pipe; 211 - first connecting branch pipe; 212 - second connecting branch pipe;

[0035] 220 - first branch pressure relief pipe; 230 - negative pressure detection pipe; 240 - first filter pipe; 250 - second filter pipe;

[0036] 260 - second main pipe; 261 - first vacuum branch pipe; 262 - second vacuum branch pipe; 270 - second branch pressure relief pipe. DETAILED DESCRIPTION

[0037] The advantages and effects of the present application can be easily understood by those skilled in the art from the above description. The present application can also be implemented or applied in different specific embodiments, and various modifications or changes can be made to the details based on different viewpoints and applications without departing from the spirit of the present application.

[0038] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are only used to understand and read the content disclosed in the present specification, and do not limit the conditions under which the present application can be implemented, and therefore do not have technical significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" used in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0039] The pressure relief channel of the existing vacuum suction system is often single, leading to unstable pressure relief, unable to quickly release the residual pressure in the biopsy needle, and there is a risk of explosion during sampling operation, and the lesion tissue is easily dragged, causing unintended damage. In addition, the airway passage is complex, and vortex, backflow and other phenomena are easily generated in the airway passage, causing unstable suction. In addition, there is no filtering protection in the vacuum suction system, and waste liquid and waste residue are easily sucked into the negative pressure pump, causing damage to the equipment.

[0040] Based on this, the present application provides a vacuum suction system, in order to be able to describe the present application in detail, the vacuum suction system of the present application will be described in detail as follows:

[0041] Please refer to Figure 1As shown, the utility model provides a kind of vacuum suction system, comprising: negative pressure pump 10, vacuum container 30 and at least two branch pressure relief pipeline, wherein, the vacuum container 30 is connected with the first main pipeline 210 between the negative pressure pump 10, the vacuum container 30 is also connected with the second main pipeline 260 for communicating biopsy needle 40;Each branch pressure relief pipeline is connected in the respective branch position of the first main pipeline 210 and / or second main pipeline 260, branch pipeline valve is provided on each branch pressure relief pipeline, and the branch pipeline valve can be communicated or blocked corresponding branch pressure relief pipeline;Main pipeline valve 160 is arranged on the first main pipeline 210 or the second main pipeline 260, and the main pipeline valve 160 is arranged between two adjacent branch positions, to open the main pipeline valve 160 when suction mode, make the pipeline gas communication between two adjacent branch positions, and close the main pipeline valve 160 when pressure relief mode, block the pipeline between two adjacent branch positions.

[0042] Specifically, negative pressure pump 10 as power component, provides suction power source for entire system;Vacuum container 30 as temporary storage and gas pressure buffer space, collect waste gas, waste liquid, waste residue from biopsy needle 40;Negative pressure pump 10 is connected with vacuum container 30 by first main pipeline 210, for providing suction power for vacuum container 30 and biopsy needle 40 by negative pressure pump 10, and ensure that required negative pressure environment can be formed and kept in vacuum container 30 during operation;Vacuum container 30 is connected with biopsy needle 40 by second main pipeline 260, so that biopsy needle 40 can effectively adsorb focus tissue by using the negative pressure generated by vacuum container 30 when working, to improve the stability and precision of rotation cutting operation.

[0043] The above-mentioned "each branch pressure relief pipeline is connected in the respective branch position of the first main pipeline 210 and / or second main pipeline 260" can be multiple. For example, branch pressure relief pipeline can be arranged on the first main pipeline 210 and the second main pipeline 260;Branch pressure relief pipeline can also be arranged only on the first main pipeline 210, without being arranged on the second main pipeline 260;Branch pressure relief pipeline can also be arranged only on the second main pipeline 260, without being arranged on the first main pipeline 210. The embodiment in the drawing of the present application adopts the mode that branch pressure relief pipeline is arranged on the first main pipeline 210 and the second main pipeline 260.

[0044] In the present application, the main pipeline valve 160 can communicate the pipeline between two branch positions in the suction mode, so that the whole main pipeline is communicated to realize the suction operation; and can block the pipeline between two adjacent branch pipelines in the pressure relief mode to realize independent pressure relief operation of each branch pressure relief pipeline to independently relieve the main pipeline section communicated with each branch pressure relief pipeline. The branch pipeline valve on each branch pressure relief pipeline can communicate or block the corresponding branch pressure relief pipeline to start or prevent pressure relief. By controlling the state of the main pipeline valve 160 and each branch pipeline valve respectively, the switching of suction and pressure relief can be realized, and at least two pressure relief channels (at least two branch pressure relief pipelines) are used for independent operation in the pressure relief mode, which is beneficial to quickly and effectively remove the residual pressure in the biopsy needle 40 and avoid the phenomenon that the residual pressure drags the lesion tissue. Moreover, the suction channel of the vacuum suction system is single, which can effectively avoid the generation of vortex and has good suction stability.

[0045] In some embodiments, at least one branch pressure relief pipeline in each branch pressure relief pipeline is connected to the first branch position of the second main pipeline 260, and the main pipeline valve 160 is arranged between the first branch position and the vacuum container 30 to separate the pipeline between the vacuum container 30 and the biopsy needle 40 in the pressure relief mode. For easy understanding, see Figure 1 In an embodiment, the first branch position corresponds to the position of the second pipe joint 140. In this way, the pipeline between the biopsy needle 40 and the vacuum container 30 is blocked by the main pipeline valve 160, and the process of pressure relief of the biopsy needle 40 is not affected by the internal pressure of the vacuum container. If the vacuum container 30 does not relieve pressure in time, the biopsy needle 40 can still quickly relieve pressure, and the phenomenon that the residual pressure drags the lesion tissue can be avoided.

[0046] For example, see Figures 1 to 5 One of the branch pressure relief pipelines is the first branch pressure relief pipeline 220 connected to the corresponding branch position of the first main pipeline 210, and the other branch pressure relief pipeline is the second branch pressure relief pipeline 270 connected to the corresponding branch position of the second main pipeline 260. In this way, in the pressure relief mode, the biopsy needle 40 relieves pressure through the second branch pressure relief pipeline 270, and the vacuum container 30 relieves pressure through the first branch pressure relief pipeline 220, and the pressure relief of the biopsy needle 40 is not affected by the residual negative pressure in the vacuum container 30.

[0047] Of course, the arrangement of the branch pipes can also be other ways, in one possible implementation (not shown), two branch relief pipes are connected to the second main pipe 260, and one of the two branch relief pipes is connected at the first branch position, and the other branch relief pipe is connected at the second branch position of the second main pipe 260, the second branch position is located between the first branch position and the vacuum container 30, and the main pipe valve 160 is provided between the first branch position and the second branch position. In this way, the biopsy needle 40 and the vacuum container 30 can be correspondingly relieved in different relief channels in the relief mode. More specifically, referring to Figures 1 to 5 , the branch pipe valve on the first branch relief pipe 220 is a relief valve 110, the branch pipe valve on the second branch relief pipe 270 is a first pinch valve 150, and the main pipe valve 160 is a second pinch valve. Among them, the first main pipe 210 is provided with a first pipe joint 130 and a first branch relief pipe 220 leading from the first pipe joint 130, and the first branch relief pipe 220 is connected with a relief valve 110; the second main pipe 260 is provided with a second pipe joint 140 and a second branch relief pipe 270 leading from the second pipe joint 140, and the second pipe joint 140 and the second branch relief pipe 270 are provided with a first pinch valve 150, and the second pipe joint 140 and the vacuum container 30 are provided with a second pinch valve. The relief valve as a relief component can timely remove the residual pressure in the pipe according to the control requirement; the pinch valve is used to cut off or conduct the medium in the pipe, which has small flow resistance, wear resistance, corrosion resistance, no dead angle and easy cleaning, and is particularly suitable for occasions requiring quick switching and frequent operation. Optionally, the relief valve can not only be fully opened or closed, but also can adjust the negative pressure level of the entire vacuum suction system in the suction state by controlling the opening degree, so that the negative pressure level of the entire vacuum suction system output to the biopsy needle is adjustable, and the pipe clamp valve can be used for rapid relief when relief is needed. It is worth mentioning that the types of valves used by the main pipe valve 160 and each branch pipe valve are not limited to this, and the main pipe valve 160 and each branch pipe valve only need to be able to realize opening and closing.

[0048] It should be noted that, referring to Figure 2 and Figure 3 , in the suction mode, the negative pressure pump 10 is opened, the second pinch valve is opened, the relief valve 110 is in a non-full opening state, and the first pinch valve 150 is closed, so that the biopsy needle 40 performs rotary cutting sampling; referring to Figure 4 and Figure 5, the negative pressure pump 10 is closed, the second pinch valve is closed, the pressure relief valve 110 is fully opened, and the first pinch valve 150 is opened to release the residual pressure in the vacuum container 30 from the first branch pressure relief pipeline 220 and release the residual pressure in the biopsy needle 40 from the second branch pressure relief pipeline 270.

[0049] Specifically, when the system enters the suction mode, the negative pressure pump 10 is opened and generates negative pressure; the second pinch valve (main pipeline valve 160) is opened, the opening of the second pinch valve allows the negative pressure in the vacuum container 30 to be transmitted to the biopsy needle 40 through the second main pipeline 260, so that the biopsy needle 40 can effectively suck the cut lesion tissue into the collection cavity by using the negative pressure; the pressure relief valve 110 is in a non-full opening state, and the first pinch valve 150 is closed, so that the first branch pressure relief pipeline 220 can be relieved when needed, and the second branch pressure relief pipeline 270 is kept disconnected, so that a suction passage is formed between the biopsy needle 40, the vacuum container 30 and the negative pressure pump 10, and the suction force generated by the negative pressure pump 10 can suck the lesion tissue at the front end of the biopsy needle 40 into the sampling cavity of the biopsy needle 40, and the biopsy needle 40 can start the operation of rotary cutting sampling. The suction passage is single, which can effectively avoid the generation of vortex and other phenomena, and the suction is stable and efficient.

[0050] When the system enters the pressure relief mode, the negative pressure pump 10 is closed and no longer generates negative pressure, so as to avoid pressure fluctuation caused by the continuous operation of the negative pressure pump 10 when the system releases pressure; the second pinch valve (main pipeline valve 160) is closed, which cuts off the negative pressure transmission path between the vacuum container 30 and the biopsy needle 40, prevents the negative pressure from continuing to act on the biopsy needle 40 during the pressure relief process, and thus protects the biopsy needle 40 from being damaged; the pressure relief valve 110 is fully opened, and the first pinch valve 150 is opened, forming two independent air passages connected with the atmosphere. The opening of the pressure relief valve 110 allows the residual pressure in the vacuum container 30 to be released to the atmosphere through the first branch pressure relief pipeline 220, which is beneficial to reduce the pressure in the system and prevent equipment damage or safety hazards caused by excessive pressure. The opening of the first pinch valve 150 allows the residual pressure in the biopsy needle 40 to be released to the atmosphere through the second branch pressure relief pipeline 270, which is beneficial to ensure that the biopsy needle 40 can return to the initial state after pressure relief and prepare for the next operation. In this way, the use of multiple pressure relief channels, each of which is independent, can quickly and effectively remove the residual pressure in the vacuum container 30 passage and the biopsy needle 40 passage, effectively eliminate the risk of explosion during sampling operation, and there is no phenomenon of residual pressure dragging lesion tissue.

[0051] Continuing to refer to Figure 1In the above embodiment, the vacuum suction system further comprises a negative pressure collection member 120 and a negative pressure detection pipe 230, the negative pressure detection pipe 230 is connected with the first main pipe 210, the negative pressure detection pipe 230 is connected with the negative pressure collection member 120, and the negative pressure detection pipe 230 and the first branch pressure relief pipe 220 are connected at the same branch position on the first main pipe 210 through the first pipe joint 130. Specifically, the first pipe joint 130 is arranged on the first main pipe 210, the first branch pressure relief pipe 220 and the negative pressure detection pipe 230 are respectively led out from the first pipe joint 130, the negative pressure collection member 120 is used as a negative pressure monitoring component to monitor the air pressure value in the entire air passage in real time, and potential problems in the system, such as insufficient negative pressure or excessively high negative pressure, can be found in time, so as to avoid possible equipment damage or operation failure; and at this time, the negative pressure detection pipe 230 and the first branch pressure relief pipe 220 are both connected with the first main pipe 210 through the first pipe joint 130, the number of required pipe joints is less, which is conducive to cost saving, and in addition, the position of negative pressure detection is very close to the first branch pressure relief pipe, which is conducive to more rapid and accurate pressure relief.

[0052] Alternatively, in some other embodiments, the vacuum suction system further comprises a negative pressure collection member 120 and a negative pressure detection pipe 230, the negative pressure detection pipe 230 is connected with the first main pipe 210, and the negative pressure detection pipe 230 is connected with the negative pressure collection member 120. Specifically, the negative pressure detection pipe 230 can be connected on the first main pipe 210, and is located at a different position from the first branch pressure relief pipe 220 on the first main pipe 210, and the negative pressure detection pipe 230 can also detect the negative pressure in the first main pipe 210 through the negative pressure collection member 120.

[0053] It can be understood that the vacuum suction system further comprises a controller, the controller is connected with the negative pressure collection member 120, the main pipe valve 160 and each branch pipe valve. The controller can be a single-chip microcomputer. The negative pressure of the system is detected by the negative pressure collection member 120, and the controller can automatically adjust the opening and closing states of the main pipe valve 160, each branch pipe valve and the negative pressure pump 10 according to the feedback data of the negative pressure collection member 120, so as to switch between the suction mode and the pressure relief mode.

[0054] In the above embodiments, the vacuum container 30 has a barrel air inlet 31 and a barrel air outlet 32, the negative pressure pump 10 has a pump air inlet 11 and a pump air outlet 12, the first main pipeline 210 is connected to the barrel air outlet 32 and the pump air inlet 11 respectively, and the second main pipeline 260 is connected to the biopsy needle 40 and the barrel air inlet 31 respectively. Specifically, the barrel air inlet 31 and the barrel air outlet 32 are arranged on the vacuum container 30, which ensures that the gas can smoothly enter the vacuum container 30 from the end of the biopsy needle 40 (through the second main pipeline 260), and at the same time, the gas in the barrel can be effectively extracted (through the first main pipeline 210 and the negative pressure pump 10). By optimizing the gas transmission path and reducing unnecessary pipeline connections, the system can more effectively utilize the negative pressure generated by the negative pressure pump 10, thereby reducing energy consumption.

[0055] It can be understood that the pump air outlet 12 of the negative pressure pump 10 is connected with a silencer 13. By connecting the silencer 13 to the pump air outlet 12, the noise waves generated during the operation of the negative pressure pump 10 can be effectively absorbed and dispersed, thereby significantly reducing the noise level at the pump air outlet 12. In addition to reducing noise, the silencer 13 can also prevent the negative pressure pump 10 from malfunctioning due to excessive vibration and noise to some extent, thereby improving the reliability and stability of the equipment and prolonging the service life of the equipment.

[0056] In some embodiments, the vacuum suction system further comprises a filter 20 arranged on the first main pipeline 210. Specifically, the filter 20 is arranged between the vacuum container 30 and the negative pressure pump 10, the inlet of the filter 20 is connected to the vacuum container 30 through a first filter pipeline 240, and the outlet of the filter 20 is connected to the first main pipeline 210 through a second filter pipeline 250. As a protective component, the filter 20 can effectively filter waste gas, waste residue and waste liquid in the entire channel system, which ensures the purity of the gas entering the negative pressure pump 10, reduces the risk of impurities accumulating in the pump, provides front protection for the negative pressure pump 10, and thereby prolongs the service life of the negative pressure pump 10. The second filter pipeline 250 is in communication with the outlet of the filter 20 and the first main pipeline 210 respectively, and the first filter pipeline 240 is in communication with the barrel air outlet 32 of the vacuum container 30 and the inlet of the filter 20 respectively. By arranging the filter 20 between the negative pressure pump 10 and the vacuum container 30, the filter 20 can effectively prevent waste liquid and waste residue from entering the negative pressure pump 10, thereby improving the safety of the product. Moreover, the second filter pipeline 250 and the first main pipeline 210 are connected through a fixed joint 170, and the fixed joint 170 can be arranged on the equipment shell. In this way, the filter 20 and the vacuum container 30 can be easily disassembled and maintained.

[0057] In the above embodiment, the first main pipe 210 comprises a first connecting branch pipe 211 and a second connecting branch pipe 212, two ends of the first connecting branch pipe 211 are connected with the first pipe joint 130 and the second filter pipe 250 respectively, and two ends of the second connecting branch pipe 212 are connected with the first pipe joint 130 and the negative pressure pump 10 respectively. Specifically, the first pipe joint 130 has a first main interface and a second main interface arranged coaxially, and a first bypass interface and a second bypass interface arranged radially, two ends of the first connecting branch pipe 211 are connected with the first main interface of the first pipe joint 130 and the second filter pipe 250 respectively, and two ends of the second connecting branch pipe 212 are connected with the second main interface of the first pipe joint 130 and the pump gas inlet 11 of the negative pressure pump 10 respectively; two ends of the first branch pressure relief pipe 220 are connected with the first bypass interface of the first pipe joint 130 and the pressure relief valve 110 respectively, and two ends of the negative pressure detection pipe 230 are connected with the second bypass interface of the first pipe joint 130 and the negative pressure collection piece 120 respectively.

[0058] It can be understood that the second main pipe 260 comprises a first vacuum branch pipe 261 and a second vacuum branch pipe 262, two ends of the first vacuum branch pipe 261 are connected with the second pipe joint 140 and the vacuum container 30 respectively, and two ends of the second vacuum branch pipe 262 are connected with the second pipe joint 140 and the biopsy needle 40 respectively. Specifically, the second pipe joint 140 is a three-way joint, having a first connecting port and a second connecting port arranged coaxially, and a third connecting port led radially, two ends of the first vacuum branch pipe 261 are connected with the first connecting port of the second pipe joint 140 and the barrel gas inlet 31 of the vacuum container 30 respectively, two ends of the second vacuum branch pipe 262 are connected with the second connecting port of the second pipe joint 140 and the distal end of the biopsy needle 40 respectively, and the third connecting port of the second pipe joint 140 is connected with the second branch pressure relief pipe 270.

[0059] The working principle of the vacuum suction system is as follows: referring to Figure 2 and Figure 3 in the suction mode, the negative pressure pump 10 and the second pinch valve are opened, the pressure relief valve 110 is in a non-full open state, the first pinch valve 150 is closed, and the gas passes through the biopsy needle 40, the second main pipe 260, the second pinch valve, the vacuum container 30, the filter 20 (and the filter 20 pipe), the first main pipe 210 and the negative pressure pump 10 in turn, wherein the negative pressure collection piece 120 monitors the negative pressure in the first main pipe 210 in real time. Referring to Figure 4 and Figure 5, the negative pressure pump 10 and the second pinch valve are closed, the pressure relief valve 110 is fully opened, the first pinch valve 150 is opened, the residual pressure in the biopsy needle 40 is discharged to the atmosphere through the second main pipeline 260 (more specifically, the second vacuum branch 262), the second pipe joint 140, the second branch pressure relief pipeline 270, and the first pinch valve 150, and the residual pressure in the vacuum container 30 is discharged to the atmosphere through the filter 20 (and the filter 20 pipeline), the first main pipeline 210 (more specifically, the first connection branch 211), the first pipe joint 130, the first branch pressure relief pipeline 220, and the pressure relief valve 110. Each pressure relief path is independent, forming a multi-path pressure relief channel, which is conducive to more quickly releasing the residual pressure in the biopsy needle 40 and avoiding the phenomenon of residual pressure dragging the lesion tissue.

[0060] Based on the same concept, the utility model also provides a biopsy sampling device, which comprises the vacuum suction system described above. The vacuum suction system can be used for the biopsy sampling device to suck the lesion tissue.

[0061] In summary, the vacuum suction system and the biopsy sampling device provided by the utility model can quickly and effectively release the residual pressure in the vacuum container 30 and the biopsy needle 40 by setting branch pressure relief pipelines at the corresponding branch positions of the first main pipeline 10 and the second main pipeline 260, controlling the states of the main pipeline valve 160 and the branch pipeline valves, switching between the suction mode and the pressure relief mode, and using a multi-path pressure relief channel to independently operate in the pressure relief mode, effectively eliminating the risk of explosion during the sampling operation, and avoiding the phenomenon of residual pressure dragging the lesion tissue. In addition, the suction channel is single, which can effectively avoid the generation of vortex and other phenomena, and the suction is stable and efficient.

[0062] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A vacuum suction system for providing suction power to a biopsy needle, characterized by, The vacuum suction system comprises: a negative pressure pump; a vacuum container, a first main pipeline being connected between the negative pressure pump and the vacuum container, and a second main pipeline being connected to the vacuum container for communicating with a biopsy needle; at least two branch pressure relief pipelines, each of the branch pressure relief pipelines being connected at a corresponding branch position of the first main pipeline and / or the second main pipeline, and each of the branch pressure relief pipelines being provided with a branch pipeline valve capable of communicating or blocking the corresponding branch pressure relief pipeline; a main pipeline valve being provided on the first main pipeline or the second main pipeline and being located between two adjacent branch positions, so that the main pipeline valve is opened to enable the pipeline gas to communicate between the two adjacent branch positions in a suction mode, and the main pipeline valve is closed to block the pipeline between the two adjacent branch positions in a pressure relief mode.

2. The vacuum suction system according to claim 1, wherein at least one of the branch pressure relief pipelines is connected at a first branch position of the second main pipeline, and the main pipeline valve is provided between the first branch position and the vacuum container to block the pipeline between the vacuum container and the biopsy needle in the pressure relief mode.

3. The vacuum suction system according to claim 2, characterized in that one of the branch pressure relief pipelines is a first branch pressure relief pipeline connected at a corresponding branch position of the first main pipeline, and the other of the branch pressure relief pipelines is a second branch pressure relief pipeline connected at the first branch position; alternatively, two of the branch pressure relief pipelines are connected at the second main pipeline, one of the two branch pressure relief pipelines being connected at the first branch position, and the other of the two branch pressure relief pipelines being connected at a second branch position of the second main pipeline, the second branch position being located between the first branch position and the vacuum container, and the main pipeline valve being provided between the first branch position and the second branch position.

4. The vacuum suction system according to claim 3, characterized in that: the branch pipeline valve on the first branch pressure relief pipeline is a pressure relief valve, the branch pipeline valve on the second branch pressure relief pipeline is a first pinch valve, and the main pipeline valve is a second pinch valve.

5. The vacuum suction system according to claim 4, characterized in that in the suction mode, the negative pressure pump is opened, the second pinch valve is opened, the pressure relief valve is in a non-full opening state, and the first pinch valve is closed; and in the pressure relief mode, the negative pressure pump is closed, the second pinch valve is closed, the pressure relief valve is fully opened, and the first pinch valve is opened.

6. The vacuum suction system according to claim 3, characterized in that The vacuum suction system further comprises a negative pressure collection member and a negative pressure detection pipeline, the negative pressure detection pipeline being connected to the first main pipeline, and the negative pressure detection pipeline being connected to the negative pressure collection member.

7. The vacuum suction system according to claim 1, characterized in that The vacuum suction system further comprises a negative pressure collection member and a negative pressure detection pipeline, the negative pressure detection pipeline being connected to the first main pipeline, and the negative pressure detection pipeline being connected to the negative pressure collection member.

8. Vacuum suction system according to claim 6 or 7, characterized in that The vacuum suction system further comprises a controller, the controller being connected to the negative pressure collection member, the main pipeline valve, and each of the branch pipeline valves.

9. The vacuum suction system according to claim 1, characterized in that, The negative pressure pump has a pump air inlet and a pump air outlet, and a silencer is connected to the pump air outlet; and / or, the vacuum suction system further comprises a filter, which is arranged on the first main pipeline.

10. A biopsy sampling device, characterized by, A biopsy needle and a vacuum suction system according to any one of claims 1-9, wherein the second main pipeline of the vacuum suction system is connected to the biopsy needle.

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