A fluid management host and related system

Abstract

The present invention discloses a fluid management host and a related system, the fluid management host may include: a host housing, a main control board and a suction pump group arranged in the host housing; the host housing is provided with a suction interface for an external liquid collection container and a weighing signal interface for an external weighing sensor; the suction pump group is electrically connected to the main control board and connected to the suction interface, for executing the received suction control instruction; the main control board is electrically connected to the weighing signal interface, for receiving the injection volume of the injection container and the liquid output volume of the liquid collection container obtained by the weighing sensor through the weighing signal interface, generating a suction control instruction according to the injection volume and / or the liquid output volume, and sending it to the suction pump group. The fluid management host provided by the present invention can monitor the injection volume of the fluid injected into the uterine cavity and the liquid output volume of the sucked fluid in real time during uterine cavity surgery, which is helpful for real-time monitoring of the liquid output volume of fluids such as uterine distention fluid and early identification of the injection volume of the fluid, and realizing automatic monitoring of the fluid.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a fluid management host and related systems. Background Art

[0002] During minimally invasive intrauterine surgery, fluids (such as saline, glucose injection and other uterine distension fluids) are required for uterine distension and cleaning. The purpose of uterine distension is to fully expand the uterine cavity, thereby increasing the surgical space and providing a good field of view for intrauterine surgery; cleaning is conducive to the peeling of cut tissues, residues, etc., so that they can be sucked out of the uterine cavity together with the fluid. In the case of uterine distension, the uterine cavity is in a positive pressure state. As time goes by, the fluid used for uterine distension will enter the patient's blood circulation system through the surgical wound of the uterine cavity. Too much fluid entering the patient's blood circulation system will lead to a series of serious complications or clinical symptoms such as human fluid overload, dilutional hyponatremia, water intoxication, etc., and in severe cases, it may even endanger the patient's life.

[0003] Relevant literature records that in healthy patients, the maximum liquid absorption of hypotonic solution is 1000 ml, the maximum liquid absorption of isotonic solution is 2500 ml, and the maximum liquid absorption of high viscosity solution is 500 ml. In the prior art, the patient's absorption (deficit) is generally obtained by calculating the difference between the injection volume of the fluid injected into the body and the output volume of the aspirated and overflowed fluid, and then comparing the absorption volume with the empirical value to determine whether there is a risk during the operation. Summary of the invention

[0004] Based on the inventor's understanding of the prior art, the current collection device is mostly used to collect the sucked and / or overflowed fluid in a collection bucket during intrauterine surgery, and then the collection bucket is placed on an electronic scale for weighing and measurement. This simple collection method using a collection bucket sometimes causes the fluid to spill or overflow when the collection bucket needs to be replaced because the amount of fluid discharged is greater than the volume of the collection bucket, which in turn affects the inaccurate weighing; moreover, manual operations are required many times during the calculation, weighing, and dumping process, which not only increases the workload, but also the data cannot achieve the purpose of real-time monitoring.

[0005] In view of the above problems, the present invention is proposed to provide a fluid management host and related systems that overcome the above problems or at least partially solve the above problems.

[0006] In a first aspect, an embodiment of the present invention provides a fluid management host, which may include: a host housing, a main control board and a suction pump group disposed in the host housing;

[0007] The main body housing is provided with a suction interface for connecting to an external liquid collection container and a weighing signal interface for connecting to an external weighing sensor;

[0008] The suction pump group is electrically connected to the main control board and connected to the suction interface, and is used to execute the received suction control instruction;

[0009] The main control board is electrically connected to the weighing signal interface, and is used to receive the liquid injection volume of the liquid injection container and the liquid discharge volume of the liquid collection container obtained by the weighing sensor through the weighing signal interface, generate a suction control instruction according to the liquid injection volume and / or the liquid discharge volume, and send it to the suction pump group.

[0010] Optionally, the main control board is specifically used to generate at least one of the following suction control instructions:

[0011] Generate a suction control instruction for controlling the start of the suction pump group according to the injection volume and a preset injection volume threshold;

[0012] generating a suction control instruction for controlling the suction pump group to stop according to the liquid output and the capacity of the liquid collecting container;

[0013] generating a suction control instruction for controlling the suction pump group to stop according to the difference between the injection amount and the discharge amount;

[0014] Generate a suction control instruction for controlling the suction pump group to stop according to the injection volume, the discharge volume, a preset compensation volume, and a preset deficit volume threshold;

[0015] A suction control instruction for regulating the suction power of the suction pump group is generated according to the injection flow rate corresponding to the injection volume and the discharge flow rate corresponding to the discharge volume.

[0016] Optionally, the fluid management host may further include: a gas sensor; the gas sensor is located on the suction pipeline of the suction pump group and is electrically connected to the main control board; used to detect the attraction of the suction pump group and send the attraction to the main control board; accordingly,

[0017] The main control board is used to generate a suction control instruction according to the attraction force and the attraction force setting value to adjust the suction power of the suction pump group.

[0018] Optionally, the gas sensor is installed on the main control board; the gas sensor is connected to the air suction port of the suction pump group and the suction interface through a three-way joint.

[0019] Optionally, the suction pump set may include at least two sets of suction pumps, one set for externally connecting to a first liquid collection container connected to a surgical instrument, and one set for externally connecting to a second liquid collection container connected to a collection membrane; accordingly,

[0020] At least two gas sensors are provided, one of which is used to detect the attraction force of the suction pump connected to the first liquid collecting container, and the other is used to detect the attraction force of the suction pump connected to the second liquid collecting container.

[0021] Optionally, the fluid management host may further include a muffler group; the muffler group is connected to the air outlet of the vacuum pump group.

[0022] Optionally, the fluid management host may further include: a display screen and a human-computer interaction unit;

[0023] The display screen is arranged on the host housing and is electrically connected to the main control board for displaying information;

[0024] The human-computer interaction unit includes an operation knob, a key input unit or a touch input unit, which is electrically connected to the main control board; accordingly,

[0025] The main control board is also used to obtain the suction operation information input through the human-computer interaction unit, generate a suction control instruction according to the suction operation information, and send it to the suction pump group.

[0026] Optionally, the fluid management host may further include: a power controller, the power controller being electrically connected to the main control board;

[0027] The power controller comprises: a power mainboard, a power filter, a potential balancing connector, a power switch respectively connected to the power mainboard, and a power interface connected to the power filter;

[0028] The power filter, the potential balancing connector, the power switch and the power interface are respectively arranged on the host housing, and the power interface is used for connecting to an external power supply.

[0029] In a second aspect, an embodiment of the present invention provides a fluid management system, which may include: a liquid injection amount weighing device connected to a liquid injection container, a liquid discharge amount weighing device connected to a liquid collection container, and a fluid management host as described in the first aspect;

[0030] The liquid injection amount weighing device and the liquid discharge amount weighing device are electrically connected to the main control board via the weighing signal interface, and the liquid collection container is connected to the suction pump group via the suction interface;

[0031] The main control board is used to receive the liquid injection volume of the liquid injection container obtained by the liquid injection volume weighing device and the liquid discharge volume of the liquid collection container obtained by the liquid discharge volume weighing device, generate a suction control instruction according to the liquid injection volume and / or the liquid discharge volume, and send it to the suction pump group;

[0032] The suction pump group is used to execute the received suction control instruction.

[0033] Optionally, the main control board is specifically used to generate at least one of the following suction control instructions:

[0034] Generate a suction control instruction for controlling the start of the suction pump group according to the injection volume and a preset injection volume threshold;

[0035] generating a suction control instruction for controlling the suction pump group to stop according to the liquid output and the capacity of the liquid collecting container;

[0036] generating a suction control instruction for controlling the suction pump group to stop according to the difference between the injection amount and the discharge amount;

[0037] Generate a suction control instruction for controlling the suction pump group to stop according to the injection amount, the discharge amount, the preset compensation amount, and the preset deficit amount;

[0038] A suction control instruction for regulating the suction power of the suction pump group is generated according to the injection flow rate corresponding to the injection volume and the discharge flow rate corresponding to the discharge volume.

[0039] In a third aspect, an embodiment of the present invention provides a fluid management system, which may include: a frame and a fluid management host as described in the first aspect; the frame may be loaded with a liquid injection container and a liquid collection container;

[0040] The frame is provided with a weighing sensor for obtaining the liquid injection volume of the liquid injection container and the liquid discharge volume of the liquid collection container; the weighing sensor is electrically connected to the main control board through the weighing signal interface; the liquid collection container is connected to the suction pump group through the suction interface;

[0041] The main control board is used to generate a suction control instruction according to the liquid injection amount and / or the liquid discharge amount, and send it to the suction pump group;

[0042] The suction pump group is used to execute the suction control instruction.

[0043] Optionally, the frame may further include: a base assembly, an infusion pole assembly, a hook assembly and a liquid collection container fixing frame; the weighing sensor includes: a first weighing sensor and a second weighing sensor;

[0044] The base assembly includes: a base, a roller disposed at the bottom of the base, and a load mounting rod fixed to the base;

[0045] The infusion pole assembly is mounted in the hollow structure of the load mounting pole;

[0046] One end of the first weighing sensor is detachably connected to the infusion pole assembly; the other end is connected to the hook assembly; the hook assembly is used to hang the fluid bag;

[0047] The second load cell is detachably mounted on a side of the load mounting rod;

[0048] The liquid collecting container fixing frame is installed on the second weighing sensor.

[0049] Optionally, the infusion rod assembly may include: an infusion outer rod mounted in the load mounting rod, an infusion inner rod nested in the infusion outer rod, and a clamping sleeve rotatably nested in the outer surface of the infusion outer rod;

[0050] One end of the first weighing sensor is detachably connected to the infusion inner rod.

[0051] Optionally, the hook assembly may include: a hook bracket and a plurality of hooks connected to the hook bracket;

[0052] The hook bracket is detachably connected to the first weighing sensor.

[0053] Optionally, the liquid collection container fixing frame may include: a liquid collection container tray, a connecting column and a tray fixing frame;

[0054] The liquid collection container tray is detachably mounted on the weighing sensor, and the tray fixing frame and the liquid collection container tray are connected via the connecting column;

[0055] The upper surface of the liquid collecting container tray is provided with a liquid collecting container positioning groove.

[0056] Optionally, at least two second weighing sensors may be provided; the liquid collecting container comprises: a first liquid collecting container connected to the surgical instrument and a second liquid collecting container connected to the collecting membrane;

[0057] Among them, one second weighing sensor is connected to the first liquid collecting container, and the other is connected to the second liquid collecting container.

[0058] Optionally, the system may further include: a surgical instrument and / or a collection membrane;

[0059] The surgical instrument is connected to the first liquid collecting container, and the collecting membrane is connected to the second liquid collecting container.

[0060] Optionally, the system may further include: a power equipment host;

[0061] The power device host is electrically connected to the surgical instrument and is used to drive the surgical instrument.

[0062] Optionally, the system may further include: a filtering device; the filtering device is arranged on the frame and is respectively connected to the first liquid collecting container and the surgical instrument.

[0063] Optionally, the system may further include: a hysteroscopic endoscope, wherein the hysteroscopic endoscope is provided with an instrument channel;

[0064] The liquid injection container is connected to the instrument channel via a hose.

[0065] The beneficial effects of the above technical solution provided by the embodiment of the present invention include at least:

[0066] In an embodiment of the present invention, a fluid management host and a related system are provided. The fluid management host may include: a host housing, a main control board and a suction pump group arranged in the host housing; a suction interface for an external liquid collection container and a weighing signal interface for an external weighing sensor are arranged on the host housing; the suction pump group is electrically connected to the main control board and connected to the suction interface, and is used to execute the received suction control instruction; the main control board is electrically connected to the weighing signal interface, and is used to receive the injection volume of the injection container and the liquid discharge volume of the liquid collection container obtained by the weighing sensor through the weighing signal interface, and generate a suction control instruction according to the injection volume and / or the liquid discharge volume, and send it to the suction pump group. The above-mentioned fluid management host provided in the embodiment of the present invention can monitor the injection volume of the fluid (such as uterine distention fluid) injected into the uterine cavity and the liquid discharge volume of the sucked fluid in real time during uterine cavity surgery. Compared with the method of collecting and calculating using a collection bucket in the prior art, the fluid management host provided in the embodiment of the present invention can quickly monitor data, which is helpful for real-time monitoring of the liquid discharge volume of fluids such as uterine distention fluid and early identification of the injection volume of the fluid, and realizing automatic monitoring of the fluid.

[0067] Furthermore, the above-mentioned fluid management host provided in this embodiment is applied to uterine cavity surgery, especially hysteroscopic planing surgery, which requires the use of an electric negative pressure suction device to suction the distending fluid in the uterine cavity and / or the cut fibroids, polyps and other pathological tissues. The above-mentioned fluid management host provided in this embodiment achieves the effect of synchronous management of suction and fluid flow, thereby saving surgical operation space and facilitating rapid operation by medical staff. Furthermore, the above-mentioned fluid management host in this embodiment provides a convenient management method for the use of distending fluid in hysteroscopic surgery, and performs real-time and effective statistics on the real-time injection and extraction of distending fluid in minimally invasive uterine cavity surgery under gynecological hysteroscopy, so that users (medical staff) can know in time how much distending fluid may be absorbed by the human body, realizing the early warning function.

[0068] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0069] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0071] Figure 1 This is a schematic diagram of the architecture of the fluid management host provided in Example 1 of the present invention;

[0072] Figure 2A This is a schematic diagram of the overall structure of the fluid management host provided in Example 1 of the present invention;

[0073] Figure 2B for Figure 2A Another angle structural diagram;

[0074] Figure 3A This is a schematic diagram of the internal structure of the fluid management host provided in Example 1 of the present invention;

[0075] Figure 3B for Figure 3A Another angle structural diagram;

[0076] Figure 4 This is a schematic diagram of the architecture of the fluid management system provided in Example 2 of the present invention;

[0077] Figure 5 This is Example 1 of the overall structural schematic diagram of the fluid management system provided in Example 3 of the present invention;

[0078] Figure 6 This is Example 2 of the overall structural schematic diagram of the fluid management system provided in Example 3 of the present invention;

[0079] Figure 7 This is a schematic structural diagram of a fluid management system frame provided in Example 3 of the present invention;

[0080] Figure 8 for Figure 7 Schematic diagram of the explosion structure;

[0081] Among them, 100 fluid management host; 200 liquid injection volume weighing equipment; 300 liquid output weighing equipment; 400 frame; 500 liquid injection container; 600 liquid collection container; 700 surgical instruments; 800 power equipment host; 900 filtering equipment;

[0082] 11 host housing; 12 main control board; 13 suction pump group; 14 power controller; 15 gas sensor; 16 muffler group; 17 display screen; 18 human-computer interaction unit;

[0083] 111 suction interface; 112 weighing signal interface; 131 first suction pump; 132 second suction pump; 133 third suction pump; 141 power supply mainboard; 142 power supply filter; 143 potential balance connector; 144 power switch; 145 power supply interface; 151 first gas sensor; 152 second gas sensor; 161 first silencer; 162 second silencer; 163 third silencer;

[0084] 410 first weighing sensor; 420 second weighing sensor; 430 base assembly; 440 infusion rod assembly; 450 hook assembly; 460 liquid collection container fixing frame;

[0085] 431 base; 432 roller; 433 load mounting rod; 441 infusion outer rod; 442 infusion inner rod; 443 snap-in sleeve; 451 hook bracket; 452 hook; 461 liquid collection container tray; 462 connecting column; 463 tray fixing frame; 610 first liquid collection container; 620 second liquid collection container. DETAILED DESCRIPTION

[0086] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0087] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "far", "near", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0088] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] Example 1

[0090] Embodiment 1 of the present invention provides a fluid management host, which can be used for minimally invasive surgeries such as uterine cavity and urology. Its main function is to control the fluid injected into the uterine cavity and other chambers. Figure 3B As shown, the fluid management host 100 may include: a host housing 11, a main control board 12 and a suction pump group 13 arranged in the host housing 11; the host housing 11 is provided with a suction interface 111 for connecting an external liquid collection container and a weighing signal interface 112 for connecting an external weighing sensor;

[0091] The suction pump group 13 is electrically connected to the main control board 12 and connected to the suction interface 111, and is used to execute the received suction control instruction, that is, to control the suction force of the liquid collection container connected to the suction interface 111;

[0092] The main control board 12 is electrically connected to the weighing signal interface 112, and is used to receive the liquid injection volume of the liquid injection container and / or the liquid discharge volume of the liquid collection container obtained by the weighing sensor through the weighing signal interface 112, generate a suction control instruction according to the liquid injection volume and the liquid discharge volume, and send it to the suction pump group 13.

[0093] It should be noted that the above suction control instructions in the embodiment of the present invention may include but are not limited to the following instructions: start suction instruction, stop suction instruction, suction force adjustment instruction, suction time adjustment instruction, etc. It should also be noted that the above control of the suction force of the liquid collection container connected to the suction interface may be to control the suction force to zero (i.e. stop suction), to adjust the suction force from zero to a preset value (start suction), etc., and the embodiment of the present invention does not specifically limit this.

[0094] The above-mentioned fluid management host provided in the embodiment of the present invention can monitor the injection volume of the fluid (such as uterine distention fluid) injected into the uterine cavity and the output volume of the fluid sucked out in real time during the uterine cavity surgery, and output the suction control instruction to control the suction pump group to control the suction force of the liquid collection container connected to the suction interface. Compared with the method of collecting and recalculating using a collection bucket in the prior art, the fluid management host provided in the embodiment of the present invention can quickly monitor data, which is helpful for real-time monitoring of the output volume of fluid such as uterine distention fluid and early identification of the injection volume of the fluid, thereby realizing automatic monitoring of the fluid.

[0095] Furthermore, the above-mentioned fluid management host provided in this embodiment is applied to uterine cavity surgery, especially hysteroscopic planing surgery, which requires the use of an electric negative pressure suction device to suction the distending fluid in the uterine cavity and / or the cut fibroids, polyps and other pathological tissues. The above-mentioned fluid management host provided in this embodiment achieves the effect of synchronous management of suction and fluid flow, thereby saving surgical operation space and facilitating rapid operation by medical staff. Furthermore, the above-mentioned fluid management host in this embodiment provides a convenient management method for the use of distending fluid in hysteroscopic surgery, and performs real-time and effective statistics on the real-time injection and extraction of distending fluid in minimally invasive uterine cavity surgery under gynecological hysteroscopy, so that users (medical staff) can know in time how much distending fluid may be absorbed by the human body, realizing the early warning function.

[0096] It should also be noted that in order to realize the above functions, the fluid management host in this embodiment refers to Figure 3A and Figure 3B As shown, the fluid management host in this embodiment also needs to include: a power controller 14, which is electrically connected to the main control board 12;

[0097] The power controller 14 may include: a power mainboard 141, a power filter 142 respectively connected to the power mainboard 141, a potential balancing connector 143, a power switch 144 and a power interface 145 connected to the power filter 142; the power filter 142, the potential balancing connector 143, the power switch 144 and the power interface 145 are respectively arranged on the host housing 11, and the power interface 145 is used for an external power supply.

[0098] The power supply motherboard in this embodiment is used to convert AC220V into DC24V direct current. The power supply module is connected to the power supply filter, and the power supply filter is connected to an overcurrent protection fuse. The power supply filter can effectively filter out the frequency point of a specific frequency in the power line or the frequency other than the frequency point to obtain a power supply signal of a specific frequency, or eliminate a power supply signal after a specific frequency. The potential balancing connector is used to ground the fluid management host, and this embodiment does not specifically limit this.

[0099] In a specific embodiment, the main control board is specifically used to generate at least one of the following suction control instructions:

[0100] <Suction control instruction 1>

[0101] According to the injection volume and the preset injection volume threshold, a suction control instruction for controlling the start of the suction pump group is generated. The preset injection volume threshold in this embodiment can be the amount of uterine distension fluid required for uterine distension (such as 800mL, which can be adjusted according to the size of the uterine distension, the surgical location, and the physical signs of different patients). When the injection volume is monitored to be greater than the threshold, a suction control instruction for starting suction can be generated to avoid excessive injection of uterine distension fluid, which may cause surgical risks. Of course, in this embodiment, the injection valve of the injection container can also be closed, and the embodiment of the present invention does not specifically limit this.

[0102] <Suction control instruction 2>

[0103] According to the liquid output and the capacity of the liquid collection container, a suction control instruction for controlling the suction pump group to stop is generated. The capacity of the above-mentioned liquid collection container in the embodiment of the present invention is fixed. When it is detected that the liquid output is close to the above-mentioned capacity, it is necessary to stop the suction to avoid overflowing the liquid collection container, or to avoid sucking the uterine distension fluid into the suction pump group to cause damage to the equipment.

[0104] <Suction control instruction 3>

[0105] According to the difference between the injection volume and the output volume, a suction control instruction is generated to control the suction pump group to stop. In this embodiment, when the output volume is too much and insufficient to meet the demand for uterine expansion, it is necessary to stop the suction to avoid failing to achieve the uterine expansion effect and affecting the surgical field of view.

[0106] <Suction control instruction 4>

[0107] According to the injection volume, the output volume, the preset compensation volume, and the preset deficit volume threshold, a suction control instruction for controlling the suction pump group to stop is generated. In this embodiment, the deficit volume = injection volume - output volume - preset compensation volume. When the deficit volume is greater than the preset deficit volume threshold, the patient is prone to a series of serious complications or clinical symptoms such as dilution hyponatremia and water intoxication, so the operation needs to be stopped. However, it is necessary to stop suction before stopping injection to prevent decompression in the uterine cavity.

[0108] <Suction control instruction 5>

[0109] According to the injection flow rate corresponding to the injection volume and the discharge flow rate corresponding to the discharge volume, a suction control instruction for adjusting the suction power of the suction pump group is generated. In the embodiment of the present invention, because the peeled and cut tissues need to be cleaned in time during the operation to ensure the clarity of the uterine distension fluid in the uterine cavity and avoid turbidity that affects the surgical field of view, it is necessary to continuously suck out the uterine distension fluid to achieve a balance effect. According to the injection flow rate corresponding to the injection volume and the discharge flow rate corresponding to the discharge volume monitored, the speed of the injection flow rate and the discharge flow rate can be judged. At this time, the suction power of the suction pump group needs to be adjusted to achieve a balance between injection and suction.

[0110] In an optional embodiment, also refer to Figure 1 As shown, the fluid management host 100 may also include: a gas sensor 15; the gas sensor 15 is located on the suction pipeline of the suction pump group 13 and is electrically connected to the main control board 12; it is used to detect the suction force of the suction pump group 13 and send the suction force to the main control board 12; accordingly, the main control board 12 generates a suction control instruction according to the suction force to regulate the motor power of the suction pump group 13.

[0111] It should be noted that the gas sensor in this embodiment can be a vacuum negative pressure sensor, which can measure the attraction of the suction pump. The main control board adjusts the motor power of the suction pump based on the PWM voltage regulation method according to the measured attraction and the preset attraction, so that the attraction of the suction pump is stable within the preset range. For example, the preset attraction is 300mmHg, and the measured attraction of the suction pump group is 400mmHg. The PWM voltage regulation method will change the voltage by adjusting the length of the pulse time, and adjust the motor power of the suction pump according to the difference between the attraction measured by the air pressure sensor and the preset attraction, and adjust the control value of the suction pump in real time, so that the motor output power is stable within the range of ±10% of the preset value of 300mmHg, which ensures that the actual attraction is accurately stable near the preset attraction.

[0112] It should also be noted that the above-mentioned gas sensor measures the attraction of the suction pump. It can be understood that the attraction in the pipeline connected to the suction port of a suction pump is consistent. Therefore, in this embodiment, the above-mentioned gas sensor can be located at any position in the above-mentioned pipeline, as long as the measured attraction can be sent to the main control board. This embodiment does not make any specific limitations on this.

[0113] In a specific embodiment, in order to facilitate sending the measured attraction to the main control board in a timely manner, refer to Figure 3B As shown, in this embodiment, the gas sensor 15 is installed on the main control board 12; the gas sensor 15 is connected to the suction port of the suction pump group 13 and the suction interface 111 through a three-way joint.

[0114] In this embodiment, a three-way joint is used to connect the suction pump, the gas sensor and the suction interface, which can monitor the suction force of the suction port of the suction pump in real time and facilitate the connection of an external liquid collection container through the suction interface. It should be noted that the three-way joint in this embodiment is connected to the suction port of the suction pump, and the other two joints of the three-way joint can be connected to the gas sensor and the suction interface through soft connecting pipes and extend to one end of the main body housing. This embodiment does not specifically limit the specific connection and pipe layout method.

[0115] In a more specific embodiment, referring to Figure 3A and Figure 3B As shown, the suction pump group 13 includes at least two groups of suction pumps, one of which is used to connect to a first liquid collection container connected to a surgical instrument, and the other is used to connect to a second liquid collection container connected to a collection membrane; accordingly,

[0116] At least two gas sensors 15 are provided, one of which is used to detect the suction force of the suction pump connected to the first liquid collecting container, and the other is used to detect the suction force of the suction pump connected to the second liquid collecting container.

[0117] In another alternative embodiment, referring to Figure 1 , Figure 3A and Figure 3B As shown, the fluid management host may further include a muffler group 16 ; the muffler group 16 is connected to the air outlet of the vacuum pump group 13 .

[0118] The silencer group 16 may include at least two silencers matched with the suction pump; the suction pump is provided with an air outlet, and the silencer is connected to the air outlet of the suction pump through a hose.

[0119] When the fluid management host in the embodiment of the present invention is used as a medical device, the noise generated by the suction pump, especially during surgery, has adverse effects on both the user (medical staff) and the patient. In order to minimize the impact of the noise, a silencer is connected to the air outlet of the suction pump in the embodiment of the present invention to eliminate noise. It should be noted that the air outlet of the suction pump in this embodiment can be connected to the silencer through a hose, and this embodiment will not be repeated here.

[0120] In a more specific embodiment, referring to Figure 3A and Figure 3BAs shown, the suction pump group 13 in the embodiment of the present invention may include: a first suction pump 131, a second suction pump 132 and a third suction pump 133, the gas sensor 15 may include: a first gas sensor 151 and a second gas sensor 152, and the muffler group 16 may include: a first muffler 161, a second muffler 162 and a third muffler 163. The inventors in the embodiment of the present invention fully considered the application scope of the suction force of the suction pump during hysteroscopic surgery, and found after multiple experiments that the negative pressure suction force of 50 to 700 mmHg can meet the adsorption force of the medical device (shaver) (the adsorption force is generally set between 200 and 400 mmHg in clinical use), but when adsorbing the fluid overflowing into the buttocks collection device, the adsorption requirement is generally met by an adsorption force lower than 120 mmHg. After comprehensively considering the overall cost and the attraction limit value to be achieved, the inventors used three suction pumps with an attraction force of about 400 mmHg as the power source in this embodiment. This can not only meet the use of the medical device, but also save the production cost of the fluid management host.

[0121] It should be noted that the air outlet of the first suction pump is connected to the first muffler, the air outlet of the second suction pump is connected to the second muffler, and the air outlet of the third suction pump is connected to the third muffler. In this embodiment, any two of the three suction pumps can be connected in series to form a suction pump group, so that the suction force range of the suction pump group is 0 to 800 mmHg. The suction pumps connected in series are connected to a three-way joint and connected to a gas sensor and a suction interface, and another single suction pump is connected to a three-way joint and connected to another gas sensor and another suction interface.

[0122] In another alternative embodiment, referring to Figure 1 to Figure 3B As shown, the fluid management host may further include: a display screen 17 and a human-computer interaction unit 18; the display screen 17 is disposed on the host housing 11 and is electrically connected to the main control board 12 for displaying information;

[0123] The human-computer interaction unit may include an operation knob, a key input unit or a touch input unit, which is electrically connected to the main control board; accordingly,

[0124] The main control board 12 is also used to obtain the suction operation information input through the human-computer interaction unit, generate a suction control instruction according to the suction operation information and send it to the suction pump group 13.

[0125] The above-mentioned suction control instructions in the embodiment of the present invention can refer to the relevant description in the above-mentioned embodiment, which will not be repeated here. The above-mentioned suction operation information may include: start suction instruction, stop suction instruction, adjust suction time, set suction attraction, adjust suction attraction size, set deficit warning value, etc. The specific form of the above-mentioned touch control instructions in the embodiment of the present invention is not limited.

[0126] It should be noted that when the human-computer interaction unit in this embodiment is a touch input unit, the above-mentioned display screen and the touch input unit can be used as a touch display screen as a whole, which can realize human-computer interaction and display information.

[0127] It should also be noted that the above-mentioned deficit amount in this embodiment = intraoperative uterine distension fluid injection amount - intraoperative uterine distension fluid discharge amount. The above-mentioned data in this embodiment can realize human-computer interaction through the display screen. Further, the data sent by the main control board is displayed and displayed, such as real-time deficit value, real-time attraction value and other monitoring data or dynamic data. Compared with the mechanical pointer display method used by most electric suction devices in the prior art, the above-mentioned display screen in this embodiment is clearer, more accurate and more stable. At the same time, during the operation, the attraction force is stable near the preset attraction force, and the digital display is more intelligent.

[0128] The above-mentioned main control board in the embodiment of the present invention is combined with the display screen. According to the intelligent preset function of the human-computer interaction unit, the alarm value of the deficit amount can be set at the initial stage according to the specific situation of the patient. During the operation, the main control board detects the deficit amount in real time and displays it on the display screen. When the alarm value is reached, an alarm prompt is started. Of course, the present invention can preset the negative pressure attraction, set different negative pressure attraction according to the needs of the operation, and suck the tissue and uterine distension fluid removed during the operation into the liquid collection container.

[0129] Example 2

[0130] Embodiment 2 of the present invention provides a fluid management system, referring to Figure 4 As shown, the system may include: a liquid injection amount weighing device 200, a liquid output amount weighing device 300 and the fluid management host 100 in the above-mentioned embodiment 1;

[0131] The liquid injection volume weighing device 200 connected to the liquid injection container and the liquid output volume weighing device 300 connected to the liquid collecting container are electrically connected to the main control board through the weighing signal interface respectively. The main control board is used to receive the liquid injection volume sent by the liquid injection volume weighing device and the liquid output volume sent by the liquid output volume weighing device, generate a suction control instruction according to the liquid injection volume and / or the liquid output volume, and send it to the suction pump group; the suction pump group is used to execute the received suction control instruction.

[0132] The above-mentioned liquid injection amount weighing device 200 and liquid output amount weighing device 300 in the embodiment of the present invention can be in any form, for example, the liquid injection amount weighing device 200 and liquid output amount weighing device 300 can be a liquid flow meter, or a weighing device, etc. The embodiment of the present invention does not specifically limit this, as long as the two specific values ​​of the liquid injection amount and the liquid output amount can be obtained and sent to the main controller of the fluid management host. The above-mentioned system in the embodiment of the present invention avoids large errors caused by human factors, thereby reducing surgical risks.

[0133] In an optional embodiment, the main control board is specifically used to generate at least one of the following suction control instructions: generating a suction control instruction for controlling the start of the suction pump group according to the injection volume and a preset injection volume threshold; or generating a suction control instruction for controlling the stop of the suction pump group according to the liquid discharge volume and the capacity of the liquid collecting container; or generating a suction control instruction for controlling the stop of the suction pump group according to the difference between the injection volume and the liquid discharge volume; or generating a suction control instruction for controlling the stop of the suction pump group according to the injection volume, the liquid discharge volume, a preset compensation amount, and a preset deficit amount threshold; or generating a suction control instruction for regulating the suction power of the suction pump group according to the injection flow rate corresponding to the injection volume and the liquid discharge flow rate corresponding to the liquid discharge volume.

[0134] The above specific implementation method in this embodiment can refer to the description in the above embodiment 1, and will not be repeated here.

[0135] The above-mentioned main control board can also send the comparison result to the display screen; the display screen displays the comparison result, or the display screen issues a corresponding warning according to the comparison result. During the operation, the fluid management host automatically monitors the outflow value of the distending fluid, the waste liquid value collected by the liquid collection container, and the preset pipeline retention value, etc., calculates the weight of the deficit, and then converts it into volume according to the set liquid concentration value. When the volume value is close to the preset value of the deficit, the color of the energy column on the display screen will change according to the amount of the deficit. Once the preset value is reached, it will turn red, and there will be a buzzer alarm to achieve the purpose of sound and light alarm.

[0136] The present invention provides a fluid management system for collecting and measuring liquid for hysteroscopy with reasonable structural design and convenient use. The host of the system is provided with a negative pressure suction device for aspirating tissue and fluid (uterine distention fluid) removed during hysteroscopy. The system can aspirate tissue in real time, monitor the volume of fluid (uterine distention fluid) entering the body's blood circulation during hysteroscopy in real time, and display the interface through a display screen.

[0137] The embodiment of the present invention can preset an alarm value for the fluid deficit amount. When the real-time deficit amount reaches the preset value, an alarm can be sounded through a buzzer, or a corresponding energy bar can be set on the display screen to prompt the operator.

[0138] It should be noted here that in order to ensure safety during the operation, that is, to provide a stable constant pressure environment in the uterine cavity, when the amount of uterine distension fluid absorbed may have reached the maximum value that the human body can withstand, it is necessary to stop the negative pressure suction function first, and then stop the uterine distension fluid injection, to avoid danger caused by loss of pressure in the uterine cavity.

[0139] In another optional embodiment, the liquid injection amount weighing device may include a first weighing sensor, and the liquid discharge amount weighing device includes a second weighing sensor; the first weighing sensor and the second weighing sensor are connected to the weighing signal interface via a cable.

[0140] The inventor found in the actual test process that the data measured by the liquid flow meter has low accuracy and is prone to clogging. Therefore, in the embodiment of the present invention, a weighing sensor is preferably used to weigh the injected and sucked fluids, and the volume of the deficit is determined by the density of the fluid, and then compared with the preset deficit threshold. The weighing sensor in this embodiment uses a high-precision, power-saving 24-bit A / D converter chip, which can convert the differential sensor voltage signal into a digital signal. The main control board reads the weighing sensor data regularly through the timer for calculation, and sends it to the display for display after filtering.

[0141] The technical effects and related examples of the system described in the embodiment of the present invention can be found in the relevant content of the above-mentioned fluid management host embodiment, and the repeated parts will not be repeated.

[0142] Example 3

[0143] The inventors found that in the current minimally invasive uterine surgery, the collection bucket is placed on an electronic scale for weighing and measurement. However, when the amount of distending fluid outflow is greater than the volume of the collection bucket, the collected distending fluid needs to be poured out. In the process of switching the weighing bucket, the distending fluid is easy to spill. The existing method has multiple disadvantages. First, the measurement method is inaccurate; second, the real-time performance of calculating the deficit after weighing is poor; third, the workload of medical staff is increased, and the convenience is very poor. In addition, there is no complete system in the prior art that can provide convenient services for minimally invasive uterine surgery.

[0144] Embodiment 3 of the present invention provides a fluid management system, which can collect the aspirated fluid and the cut fibroids, polyps and other tissues, and measure the aspirated fluid and the fluid injected into the patient's body in real time, so as to facilitate intuitive understanding of the deficit data during minimally invasive uterine surgery. Figures 5 to 8 , and combined Figure 3A and Figure 3BAs shown, the system may include: a frame 400 and a fluid management host 100 as in Example 1; the frame 400 can be loaded with a liquid injection container 500 and a liquid collecting container 600; a weighing sensor for obtaining the liquid injection volume of the liquid injection container 500 and the liquid discharge volume of the liquid collecting container 600 is provided on the frame 400; the weighing sensor is electrically connected to the main control board 12 via a weighing signal interface 112; the liquid collecting container 600 is connected to the suction pump group 13 via a suction interface 111; the main control board 12 is used to generate a suction control instruction according to the liquid injection volume and / or the liquid discharge volume, and send it to the suction pump group 13; the suction pump group 13 executes the suction control instruction to control the suction force through the liquid collecting container 600.

[0145] Specifically, the frame 400 is provided with a first weighing sensor 410 for weighing the amount of liquid injected into a liquid injection container 500 that can be hung on the frame, and a second weighing sensor 420 for weighing the amount of liquid discharged from a liquid collecting container 600 loaded on the frame; the first weighing sensor 410 and the second weighing sensor 420 are electrically connected to the main control board 12 via a weighing signal interface 112, respectively; the liquid collecting container 600 can be connected to the suction interface 111 via a hose.

[0146] It should be noted that the frame in the embodiment of the present invention may be provided with a host tray or a storage rack for placing the traffic management host, and the embodiment of the present invention does not limit the specific structure and specific position of the host tray or the storage rack.

[0147] The inventors have discovered that the fluid collection devices used in the prior art can neither measure in real time, nor display multiple different data and realize negative pressure suction function. In the embodiments of the present invention, the inventors have developed a fluid management host that can integrate the above multiple functions, and provide negative pressure suction for surgical instruments such as planers in minimally invasive uterine surgery, so that the tissue removed by surgical instruments such as planers is adsorbed into the liquid collection container. During the operation, the injection volume of the fluid (uterine distention fluid) and the amount of liquid discharged from the liquid collection container are monitored in real time, and then the main control board displays the injection volume, the amount of liquid discharged, and the determined deficit volume in real time on the display screen, so that the user can always grasp the various vital signs of the patient, which provides great convenience for the smooth progress of the operation. At the same time, the above-mentioned frame is developed to load the above-mentioned injection container and liquid collection container, which saves the storage space and improves the convenience of operation.

[0148] In an alternative embodiment, referring to Figures 5 to 8 As shown, the frame 400 may further include: a base assembly 430, an infusion pole assembly 440, a hook assembly 450 and a liquid collection container fixing frame 460;

[0149] The base assembly 430 may include: a base 431, a roller 432 disposed at the bottom of the base 431, and a load mounting rod 433 fixed on the base 431; the infusion rod assembly 440 is installed in the hollow structure of the load mounting rod 433;

[0150] One end of the first weighing sensor 410 is detachably connected to the infusion pole assembly 440, and the other end is connected to the hook assembly 450; the hook assembly 450 is used to hang the fluid bag; the second weighing sensor 420 is detachably mounted on the side of the load mounting rod 433; the liquid collection container fixing bracket 460 is mounted on the second weighing sensor 420.

[0151] The frame structure provided in the embodiment of the present invention provides a carrier for multiple medical devices, which facilitates the supervision of fluids during surgery. Since the frame in this embodiment is designed in the form of a mobile cart, the fluid management host is placed on a platform provided on the cart, which facilitates the timely weighing of the injection container (fluid bag carrying saline, glucose injection and other uterine distention fluid) hung by the hook assembly and the adsorbed fluid, avoiding errors and delays in manual weighing.

[0152] In a specific embodiment, the infusion rod assembly 440 may include: an infusion outer rod 441 installed in the hollow structure of the load mounting rod 433, an infusion inner rod 442 nested in the infusion outer rod, and a clamping sleeve 443 rotatably nested on the outer surface of the infusion outer rod 441;

[0153] One end of the first weighing sensor 410 is detachably connected to the infusion inner rod 442 .

[0154] In another optional embodiment, the hook assembly 450 may include: a hook bracket 451 and a plurality of hooks 452 connected to the hook bracket 451 ; the hook bracket 451 is detachably connected to the first weighing sensor 410 .

[0155] The above-mentioned infusion pole assembly provided in the embodiment of the present invention can be adjusted in height according to the medical environment and the specific situation of the patient, and cooperates with the hook assembly to adjust the height of the injection container. At the same time, the above-mentioned first weighing sensor in this embodiment can be reset to zero, that is, the amount of uterine distension fluid injected into the patient's body can be weighed, which is convenient for medical staff to observe in real time and understand the patient's vital signs.

[0156] It should be noted that the hook assembly in the figure can hang 4 uterine distension liquid bags (liquid injection containers), each bag is 2L. The uterine distension liquid bags are arranged in a line, and there is a reasonable distance between every two uterine distension liquid bags. The weighing is accurate, and the analog value of the weighing is converted into a digital value through signal conversion and displayed in real time.

[0157] More specifically, see Figures 5 to 8 As shown, a hook bracket 451 is installed on the upper part of the first weighing sensor 410 by screw fastening, and four hooks are fixed on the hook bracket 451 by nut fastening, which are used to hang four uterine distension fluid bags; the four hooks 452 are distributed in a straight line on the hook bracket 451, and of course they can also be distributed in a circular manner, which is not specifically limited in this embodiment. Preferably, a reasonable space is left between every two hooks to facilitate the placement and removal of the uterine distension fluid bag (injection container). The lower side of the first weighing sensor is fixed to the sensor fixing plate by screw fastening, and the sensor fixing plate is clamped to the infusion inner rod by spring ball method. The infusion inner rod can be adjusted in height in the vertical direction of the infusion outer rod, thereby realizing the adjustable height of the uterine distension fluid bag.

[0158] In an optional embodiment, the liquid collecting container fixing frame 460 may include: a liquid collecting container tray 461, a connecting column 462 and a tray fixing frame 463; the liquid collecting container tray 461 can be detachably mounted on the second weighing sensor 420, and the tray fixing frame 463 and the liquid collecting container tray 461 are connected via the connecting column 462; a liquid collecting container positioning groove (not shown in the figure) is provided on the upper surface of the liquid collecting container tray 461.

[0159] In the embodiment of the present invention, the second weighing sensor is fixed to the load mounting rod through the sensor bracket, and the liquid collecting container trays in the above-mentioned liquid collecting container fixing frame are distributed in a circular form around the load mounting rod, and each tray is connected to the second weighing sensor by means of screw tightening, and the tray is suspended and surrounded around the load mounting rod. There are corresponding liquid collecting container positioning grooves on the surface of the tray, which is convenient for quick installation; a tray fixing frame is arranged above the liquid collecting container tray to stabilize the liquid collecting container and prevent the liquid collecting container from tilting or falling during the pushing or operation of the trolley. The height of the tray fixing frame from the liquid collecting container tray should be greater than half the height of the liquid collecting container itself, and the tray fixing frame and the liquid collecting container tray are connected by a connecting column and tightened with screws. Preferably, the height of the above-mentioned connecting column can be adjusted, that is, it can match liquid collecting containers of different models.

[0160] In an alternative embodiment, referring to Figures 5 to 8 As shown, at least two of the second weighing sensors 420 are provided; the liquid collecting container 600 may include: a first liquid collecting container 610 connected to the surgical instrument 700 and a second liquid collecting container 620 connected to a collecting membrane (not shown in the figure); one of the second weighing sensors is connected to the first liquid collecting container, and the other is connected to the second liquid collecting container.

[0161] It should be noted that the liquid collecting container in the embodiment of the present invention is provided with a suction port and an extraction port; the extraction port can be connected to the suction interface of the fluid management host through a hose, and the suction port is connected to the surgical instrument and / or the collection membrane. In the embodiment of the present invention, in order to accurately determine the amount of liquid output, the fluid extracted by the surgical instrument and the fluid overflowing onto the collection membrane are collected by the above-mentioned liquid collecting container, so it is necessary to match two sets of suction pumps, two sets of corresponding liquid collecting containers and two sets of second weighing sensors.

[0162] The suction port on the liquid collection container in this embodiment is connected to the suction interface of the fluid management host, and the suction tube of the surgical instrument such as the planer is connected to the designated suction interface of the liquid collection container. The negative pressure suction value and the deficit value are set by the host to turn on the negative pressure suction function. During hysteroscopic surgery, the distending fluid in the uterine cavity is adsorbed into the liquid collection container through the suction function, and the distending fluid is weighed in real time through the weighing function to display the volume value of the digital quantity. It is compared with the preset deficit threshold value to achieve the purpose of real-time monitoring and improve the safety of the operation.

[0163] Reference Figure 5 and Figure 8 As shown, the second weighing sensor 420 may include: two weighing sensors symmetrically mounted on the load mounting rod 433 , such as a second weighing sensor 421 and a third weighing sensor 422 .

[0164] Of course, the second weighing sensor 420 in this embodiment may also include: at least three weighing sensors installed on the load mounting rod; at least three weighing sensors distributed around the load mounting rod. For example, a second weighing sensor is connected to the lower end of each liquid collecting container, and the embodiment of the present invention does not specifically limit this.

[0165] In another alternative embodiment, referring to Figure 5 and Figure 6 The above-mentioned fluid management system may also include: a surgical instrument 700 and / or a collection membrane (not shown in the figure); the surgical instrument 700 is connected to the first liquid collection container 610, and the collection membrane is connected to the second liquid collection container. In order to accurately determine the amount of liquid output in the embodiment of the present invention, the fluid sucked out by the surgical instrument and the fluid overflowing onto the collection membrane are collected using the above-mentioned liquid collection container. The above-mentioned fluid management system in this embodiment, as a part of the surgical operating system, facilitates medical staff to timely understand the patient's various vital signs data and surgical operation data, and is more convenient.

[0166] In another optional embodiment, in order to provide power to the above-mentioned surgical instrument, referring to Figure 5As shown in FIG6 , the system may further include: a power device host 800; the power device host 800 is electrically connected to the surgical instrument 700 and is used to drive the surgical instrument 700. For example, the power device host in this embodiment serves as a driving control unit of the surgical instrument to ensure stable minimally invasive surgery.

[0167] It should be noted that the frame in the embodiment of the present invention may be provided with a host tray or a storage rack for placing the host of the power equipment, and the embodiment of the present invention does not limit the specific structure and specific position of the host tray or the storage rack.

[0168] In another optional embodiment, in order to make the above-mentioned liquid output weighing more accurate, refer to Figure 5 and Figure 6 As shown, the fluid management system may further include: a filtering device 900; the filtering device 900 is disposed on the frame 400 and is respectively connected to the first liquid collection container 610 and the surgical instrument 700. It should be noted that the filtering device can be respectively connected to the first liquid collection container and the surgical instrument through a hose, which does not affect the operation of the surgical instrument during the operation, and the hose does not affect the second weighing sensor weighing the weight of the first liquid collection container during the weighing process, and after filtering and cutting off the polyp, myoma and other tissues, the measured liquid output is more accurate.

[0169] In another optional embodiment, the fluid management system may further include: a hysteroscopic endoscope, the hysteroscopic endoscope is provided with an instrument channel; the injection container is connected to the instrument channel through a hose. The instrument channel in the embodiment of the present invention can accommodate the surgical instruments for minimally invasive uterine surgery, and can also inject fluid (uterine distention fluid) for uterine distention or tissue cleaning.

[0170] The technical effects and related examples of the system described in the embodiment of the present invention can be found in the relevant content of the above-mentioned fluid management host embodiment, and the repeated parts will not be repeated.

[0171] Obviously, various changes and modifications may be made to the present invention by those skilled in the art without departing from the spirit and scope of the present invention. The present disclosure is not limited to the precise structure described above and shown in the accompanying drawings, and various changes and modifications may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims. Thus, if these changes and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these changes and modifications.

Claims

1. A fluid management host, characterized in that: It comprises: a mainframe housing, a main control board, a suction pump group and a gas sensor arranged in the mainframe housing; The main body housing is provided with a suction interface for connecting to an external liquid collection container and a weighing signal interface for connecting to an external weighing sensor; The suction pump group is electrically connected to the main control board and connected to the suction interface, and is used to execute the received suction control instruction; the suction pump group includes at least two groups of suction pumps, one of which is used to connect to a first liquid collection container connected to a surgical instrument, and the other is used to connect to a second liquid collection container connected to a collection membrane; At least two gas sensors are provided, and the gas sensors are located on the suction pipeline of the suction pump group and are electrically connected to the main control board; one gas sensor is used to detect the suction force of the suction pump connected to the first liquid collecting container, and the other gas sensor is used to detect the suction force of the suction pump connected to the second liquid collecting container, and send the suction force to the main control board; The main control board is electrically connected to the weighing signal interface, and is used for receiving the liquid injection volume of the liquid injection container and the liquid discharge volume of the liquid collection container obtained by the weighing sensor through the weighing signal interface, generating a suction control instruction according to the liquid injection volume and / or the liquid discharge volume, and sending it to the suction pump group; and generating a suction control instruction according to the attraction force and the attraction force setting value to adjust the suction power of the suction pump group; The main control board is specifically used to generate at least one of the following suction control instructions: Generate a suction control instruction for controlling the start of the suction pump group according to the injection volume and a preset injection volume threshold; generating a suction control instruction for controlling the suction pump group to stop according to the liquid output and the capacity of the liquid collecting container; generating a suction control instruction for controlling the suction pump group to stop according to the difference between the injection amount and the discharge amount; Generate a suction control instruction for controlling the suction pump group to stop according to the injection volume, the discharge volume, a preset compensation volume, and a preset deficit volume threshold; A suction control instruction for regulating the suction power of the suction pump group is generated according to the injection flow rate corresponding to the injection volume and the discharge flow rate corresponding to the discharge volume.

2. The fluid management host according to claim 1, characterized in that: The gas sensor is installed on the main control board; the gas sensor is connected with the air suction port of the suction pump group and the suction interface through a three-way joint.

3. The fluid management host according to claim 1 or 2, characterized in that: It also includes a muffler group; the muffler group is connected to the air outlet of the suction pump group.

4. The fluid management host according to claim 1 or 2, characterized in that: Also includes: Display screen and human-computer interaction unit; The display screen is arranged on the host housing and is electrically connected to the main control board for displaying information; The human-computer interaction unit includes an operation knob, a key input unit or a touch input unit, which is electrically connected to the main control board; accordingly, The main control board is also used to obtain the suction operation information input through the human-computer interaction unit, generate a suction control instruction according to the suction operation information, and send it to the suction pump group.

5. The fluid management host according to claim 1 or 2, characterized in that: Also includes: A power controller, the power controller is electrically connected to the main control board; The power controller comprises: a power mainboard, a power filter, a potential balancing connector, a power switch respectively connected to the power mainboard, and a power interface connected to the power filter; The power filter, the potential balancing connector, the power switch and the power interface are respectively arranged on the host housing, and the power interface is used for connecting to an external power supply.

6. A fluid management system, characterized in that: include: A liquid injection amount weighing device connected to the liquid injection container, a liquid discharge amount weighing device connected to the liquid collection container, and a fluid management host as described in any one of claims 1 to 5; The liquid injection amount weighing device and the liquid discharge amount weighing device are electrically connected to the main control board via the weighing signal interface, and the liquid collection container is connected to the suction pump group via the suction interface; The main control board is used to receive the liquid injection volume of the liquid injection container obtained by the liquid injection volume weighing device and the liquid discharge volume of the liquid collection container obtained by the liquid discharge volume weighing device, generate a suction control instruction according to the liquid injection volume and / or the liquid discharge volume, and send it to the suction pump group; The suction pump group is used to execute the received suction control instruction.

7. The fluid management system according to claim 6, characterized in that: The main control board is specifically used to generate at least one of the following suction control instructions: Generate a suction control instruction for controlling the start of the suction pump group according to the injection volume and a preset injection volume threshold; generating a suction control instruction for controlling the suction pump group to stop according to the liquid output and the capacity of the liquid collecting container; generating a suction control instruction for controlling the suction pump group to stop according to the difference between the injection amount and the discharge amount; Generate a suction control instruction for controlling the suction pump group to stop according to the injection volume, the discharge volume, a preset compensation volume, and a preset deficit volume threshold; A suction control instruction for regulating the suction power of the suction pump group is generated according to the injection flow rate corresponding to the injection volume and the discharge flow rate corresponding to the discharge volume.

8. A fluid management system, characterized in that: include: A frame and a fluid management host as claimed in any one of claims 1 to 5; the frame can be loaded with a liquid injection container and a liquid collection container; The frame is provided with a weighing sensor for obtaining the liquid injection volume of the liquid injection container and the liquid discharge volume of the liquid collection container; the weighing sensor is electrically connected to the main control board through the weighing signal interface; the liquid collection container is connected to the suction pump group through the suction interface; The main control board is used to generate a suction control instruction according to the liquid injection amount and / or the liquid discharge amount, and send it to the suction pump group; The suction pump group is used to execute the suction control instruction.

9. The system according to claim 8, characterized in that The frame also includes: a base assembly, an infusion rod assembly, a hook assembly and a liquid collection container fixing frame; the weighing sensor includes: a first weighing sensor and a second weighing sensor; The base assembly includes: a base, a roller disposed at the bottom of the base, and a load mounting rod fixed to the base; The infusion pole assembly is mounted in the hollow structure of the load mounting pole; One end of the first weighing sensor is detachably connected to the infusion pole assembly; the other end is connected to the hook assembly; the hook assembly is used to hang the fluid bag; The second load cell is detachably mounted on a side of the load mounting rod; The liquid collecting container fixing frame is installed on the second weighing sensor.

10. The system according to claim 9, characterized in that The infusion rod assembly comprises: an infusion outer rod installed in the load mounting rod, an infusion inner rod nested in the infusion outer rod, and a clamping sleeve rotatably nested in the outer surface of the infusion outer rod; One end of the first weighing sensor is detachably connected to the infusion inner rod.

11. The system according to claim 10, characterized in that The hook assembly includes: a hook bracket and a plurality of hooks connected to the hook bracket; The hook bracket is detachably connected to the first weighing sensor.

12. The system according to claim 11, characterized in that The liquid collection container fixing frame comprises: a liquid collection container tray, a connecting column and a tray fixing frame; The liquid collection container tray is detachably mounted on the weighing sensor, and the tray fixing frame and the liquid collection container tray are connected via the connecting column; The upper surface of the liquid collecting container tray is provided with a liquid collecting container positioning groove.

13. The system according to any one of claims 8 to 12, characterized in that: At least two second weighing sensors are provided; the liquid collecting container comprises: a first liquid collecting container connected to the surgical instrument and a second liquid collecting container connected to the collecting membrane; Among them, one second weighing sensor is connected to the first liquid collecting container, and the other is connected to the second liquid collecting container.

14. The system according to claim 13, characterized in that Also includes: surgical instruments and / or collecting membranes; The surgical instrument is connected to the first liquid collecting container, and the collecting membrane is connected to the second liquid collecting container.

15. The system according to claim 14, characterized in that Also includes: Power equipment host; The power device host is electrically connected to the surgical instrument and is used to drive the surgical instrument.

16. The system according to claim 15, characterized in that Also includes: Filtering equipment; the filtering equipment is arranged on the frame and is respectively connected to the first liquid collecting container and the surgical instrument.

17. The system according to any one of claims 8 to 12, characterized in that: Also includes: A hysteroendoscope, wherein the hysteroendoscope is provided with an instrument channel; The liquid injection container is connected to the instrument channel via a hose.

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