Medical residual liquid recovery method and device

Abstract

This invention belongs to the technical fields of next-generation information technology and biomedical industry, and discloses a method and device for recovering medical waste liquid. The method is applied to a medical waste liquid recovery device, which includes a chemical composition analysis device, a detection chamber, and a recovery chamber. The detection chamber has a waste liquid injection port at its upper part, and a channel exists between the detection chamber and the recovery chamber. The chemical composition analysis device is positioned at a preset location corresponding to the detection chamber. The medical waste liquid recovery method includes: when a test waste liquid is detected being injected into the detection chamber, obtaining the volume L of the test waste liquid; when a preset command is received, activating the chemical composition analysis device to obtain the component M of the test waste liquid; and after obtaining the volume L and component M of the test waste liquid, controlling the test waste liquid to enter the recovery chamber through the channel. This invention automates the detection and recovery of medical waste liquid, improving the recovery efficiency and statistical accuracy of medical waste liquid.

Description

Technical Field

[0001] This invention belongs to the fields of next-generation information technology and biomedical industry technology, and relates to a method and device for medical waste liquid recovery. Background Technology

[0002] Most medical waste liquids or residual liquids cannot be discarded at will and need to be recycled and processed, especially for controlled medical waste liquids, such as controlled drugs used in hospital surgeries. The entire process of drug flow needs to be monitored, and accurate statistics are required during recycling to record the composition and recycling volume of different controlled drugs. Currently, medical waste liquid recycling is usually carried out manually for testing and recycling, which is inefficient and has a large margin for human error in the control process, making it easy to make recording errors. Summary of the Invention

[0003] In view of this, the present invention provides a method and apparatus for recovering medical waste liquid, which solves the problem of low efficiency in the manual detection and recovery of medical waste liquid in traditional technology.

[0004] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a method for recovering medical waste liquid, applied to a medical waste liquid recovery device. The medical waste liquid recovery device includes a chemical composition analysis device, a detection chamber, and a recovery chamber. The detection chamber has a waste liquid injection port at its upper part, and a channel exists between the detection chamber and the recovery chamber. The chemical composition analysis device is positioned at a preset location corresponding to the detection chamber. The method includes:

[0005] When the detection chamber is detected to be filled with the residual liquid to be tested, the volume L of the residual liquid to be tested is obtained;

[0006] Upon receiving a preset command, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested;

[0007] After obtaining the volume L and composition M of the residual liquid to be tested, the residual liquid to be tested is controlled to enter the recovery chamber through the channel.

[0008] In some embodiments, the detection cavity is equipped with a height sensor. When the detection cavity is detected to be filled with residual liquid to be tested, obtaining the volume L of the residual liquid to be tested includes:

[0009] When the detection chamber is detected to be filled with residual liquid to be tested, the height H of the residual liquid to be tested in the detection chamber is obtained;

[0010] The volume L is obtained by using the preset detection cavity specifications and the acquired height H.

[0011] In some embodiments, the height sensor is a capacitive level gauge, which is disposed on one side of the detection chamber wall. Obtaining the height H of the remaining liquid in the detection chamber includes:

[0012] Obtain multiple real-time capacitance values ​​from the capacitive level gauge;

[0013] When the changes in multiple consecutive real-time capacitance values ​​are less than a preset value, the final value of the real-time capacitance value is obtained to obtain the height H.

[0014] In some embodiments, the height sensor is an ultrasonic sensor, which is disposed at the bottom or top of the detection chamber. Obtaining the height H of the residual liquid to be tested in the detection chamber includes:

[0015] Acquire multiple real-time ranging values ​​from the ultrasonic sensor;

[0016] When the changes in multiple real-time ranging values ​​are less than a preset value, the current data value of the ultrasonic sensor is obtained to determine the height H.

[0017] In some embodiments, the detection chamber is made of a transparent material, and the chemical composition analysis device is a photochemical analysis device, a chromatographic analysis device, or a spectroscopic analysis device. The detection port of the chemical composition analysis device is correspondingly set with the detection chamber. When a preset command is received, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested, including:

[0018] When the height H is obtained and is greater than the threshold Hq, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested.

[0019] In some embodiments, the detection chamber further includes a diluent injection port, and the cavity specifications include the bottom area S of the cavity. The method further includes:

[0020] When the height H is less than the threshold Hq, the diluent injection port is opened to inject a pre-set volume Lz of diluent, where the pre-set volume Lz is set to be greater than or equal to Hq*S*K, and K is a pre-set unit conversion factor.

[0021] The height H' of the diluted medical residual liquid is obtained using a height sensor;

[0022] Correspondingly, the volume L is obtained by using the preset detection cavity specifications and the acquired height H, including:

[0023] The volume L is obtained by using the bottom area S, height H', and volume Lz, where L = S * H' * K - Lz ± W, and W is the preset error value.

[0024] In some embodiments, the detection chamber further includes a cleaning fluid injection port, and controlling the residual liquid to be tested to enter the recovery chamber through the channel after obtaining the volume L and composition M of the residual liquid to be tested includes:

[0025] After obtaining the volume L and composition M of the residual liquid to be tested, the cleaning fluid injection port is activated to control the residual liquid to be tested to enter the recovery chamber through the channel.

[0026] In some embodiments, activating the chemical composition analysis device to obtain the composition M of the residual liquid to be tested when a height H is obtained and the height H is greater than a threshold Hq includes:

[0027] Obtain the current composition spectrum generated by the chemical composition analysis device;

[0028] Compare the current component spectrum with the preset standard component spectrum template;

[0029] When the comparison results meet the preset conditions, the component results corresponding to the standard component spectrum are extracted to obtain component M.

[0030] According to another aspect of this application, the present invention provides a medical waste fluid recovery device, comprising:

[0031] A controller is used to perform the above-mentioned medical waste recovery method;

[0032] It also includes a chemical composition analysis device, a detection chamber, and a recovery chamber. The detection chamber is located above the recovery chamber, and the chemical composition analysis device is located at a preset position corresponding to the detection chamber.

[0033] In some embodiments, the detection chamber is provided with a height sensor, and the top of the detection chamber is provided with a residual liquid injection port, a diluent injection port and a cleaning liquid injection port, with the diluent injection port and the cleaning liquid injection port located on both sides of the residual liquid injection port.

[0034] Compared with the prior art, the medical waste recovery method of the present invention has at least the following beneficial effects:

[0035] The medical waste liquid recovery method of the present invention is applied to a medical waste liquid recovery device, which includes a chemical composition analysis device, a detection chamber, and a recovery chamber. The detection chamber has a waste liquid injection port at its upper part, and a channel exists between the detection chamber and the recovery chamber. The chemical composition analysis device is set at a preset position corresponding to the detection chamber. Based on the above device, the medical waste liquid recovery method includes: when it is detected that the detection chamber is injected with waste liquid to be tested, obtaining the volume L of the waste liquid to be tested; when a preset instruction is received, activating the chemical composition analysis device to obtain the component M of the waste liquid to be tested; after obtaining the volume L and component M of the waste liquid to be tested, controlling the waste liquid to be tested to enter the recovery chamber through the channel. As can be seen from the above process, the waste liquid recovery method of the present invention abandons the traditional manual detection and recovery, realizes the automation of medical waste liquid detection and recovery, and improves the recovery efficiency and statistical accuracy of medical waste liquid.

[0036] The medical residual fluid recovery device of the present invention is used to implement the above-described medical residual fluid recovery method. Its beneficial effects are the same as those of the above-described medical residual fluid recovery method, and will not be repeated here.

[0037] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a flowchart of a method for recovering residual medical fluid provided by an embodiment of the present invention;

[0040] Figure 2 This is a detailed flowchart of a medical waste fluid recovery method provided by an embodiment of the present invention;

[0041] Figure 3 This is another detailed flowchart of a method for recovering residual medical fluid provided in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of a medical residual fluid recovery device provided in an embodiment of the present invention.

[0043] in:

[0044] 1. Detection chamber; 2. Recovery chamber; 3. Channel; 11. Residual liquid injection port; 12. Drain port; 13. Cleaning fluid injection port; 14. Diluent injection port; 15. Height sensor; 21. Silent exhaust valve. Detailed Implementation

[0045] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0046] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] Example 1

[0049] This embodiment provides a method for recovering medical waste liquid, applied to a medical waste liquid recovery device. The medical waste liquid recovery device includes a chemical composition analysis device, a detection chamber, and a recovery chamber. The detection chamber has a waste liquid injection port at its upper part, and a channel exists between the detection chamber and the recovery chamber. The chemical composition analysis device is positioned at a preset location corresponding to the detection chamber. Figure 1 As shown, the method includes:

[0050] Step S200: When it is detected that the detection chamber is injected with the residual liquid to be tested, the volume L of the residual liquid to be tested is obtained;

[0051] Step S400: Upon receiving a preset instruction, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested;

[0052] Step S600: After obtaining the volume L and composition M of the residual liquid to be tested, control the residual liquid to be tested to enter the recovery chamber through the channel.

[0053] In one embodiment, the detection chamber is equipped with a height sensor. Step S200, when it is detected that the detection chamber has been injected with the residual liquid to be tested, obtaining the volume L of the residual liquid to be tested includes:

[0054] Step S220: When it is detected that the test chamber is injected with the residual liquid to be tested, the height H of the residual liquid to be tested in the test chamber is obtained;

[0055] Step S240: Obtain the volume L by using the preset detection cavity specification data and the acquired height H.

[0056] The specifications of the detection cavity include the cross-sectional area of ​​the detection cavity. When the detection cavity is a regular structure (such as a column structure with equal width at the top and bottom), the product of the cross-sectional area and the height H is the volume L. When the detection cavity is an irregular structure, the volume of each segment needs to be calculated and then added together.

[0057] The height sensor mentioned above can be a capacitive level gauge or an ultrasonic sensor.

[0058] Specifically, when the height sensor is a capacitive level gauge, and the capacitive level gauge is installed on one side of the detection chamber wall, the height H of the remaining liquid to be measured in the detection chamber is obtained by:

[0059] Obtain multiple real-time capacitance values ​​from the capacitive level gauge;

[0060] When the changes in multiple consecutive real-time capacitance values ​​are less than a preset value, the final value of the real-time capacitance value is obtained to obtain the height H.

[0061] A capacitive level gauge is a device that converts changes in the position of the measured object into capacitance. Capacitive level gauges are characterized by simple structure, high resolution, reliable operation, and fast dynamic response. When applied to residual liquid recovery, they can detect the height H in the detection chamber, enabling rapid detection with accurate results.

[0062] In this embodiment, the final value of the real-time capacitance value is obtained only when the changes in multiple consecutive real-time capacitance values ​​are less than a preset value to obtain the height H. In the stable state of the liquid surface, the capacitance value has normal capacitance fluctuation error. The preset value is set to be less than or equal to the capacitance fluctuation error. When the changes in multiple consecutive real-time capacitance values ​​are less than the preset value, that is, all within a reasonable error, the current liquid surface can be determined to be relatively stable. This method can avoid large errors in the detection results caused by the instability of the liquid surface. The "multiple consecutive" values ​​mentioned above can be more than two times, and are not specifically limited here.

[0063] Specifically, when the height sensor is an ultrasonic sensor, and the ultrasonic sensor is located at the bottom or top of the detection chamber, the height H of the residual liquid to be tested in the detection chamber is obtained by:

[0064] Acquire multiple real-time ranging values ​​from the ultrasonic sensor;

[0065] When the changes in multiple real-time ranging values ​​are less than a preset value, the current data value of the ultrasonic sensor is obtained to determine the height H.

[0066] An ultrasonic sensor is a sensor that converts ultrasonic signals into other energy signals. Ultrasonic waves are mechanical waves with a vibration frequency higher than 20kHz. They have the characteristics of high frequency, short wavelength, small diffraction, and strong penetrating ability, especially in liquids. In this embodiment, it is used to detect the height H in the detection chamber. It can penetrate the residual liquid to be tested, thereby obtaining the height H of the residual liquid to be tested.

[0067] In this embodiment, the current data value of the ultrasonic sensor is obtained to obtain the height H when the change value of multiple real-time ranging values ​​is less than a preset value. In the stable state of the liquid surface, the ranging value has a normal distance fluctuation error. The preset value is set to be less than or equal to the distance fluctuation error. When the change value of multiple consecutive real-time capacitance values ​​is less than the preset value, that is, all within a reasonable error, it can be determined that the current liquid surface is relatively stable. This is also to avoid large errors in the detection results due to the instability of the liquid surface.

[0068] In a specific embodiment, the detection cavity is made of a transparent material, and the chemical composition analysis device is a photochemical analysis device, a chromatographic analysis device, or a spectroscopic analysis device, with the detection port of the chemical composition analysis device corresponding to the detection cavity.

[0069] like Figure 2 As shown, in step S400, when a preset instruction is received, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested, including:

[0070] Step S410: When the height H is obtained and is greater than the threshold Hq, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested. Wherein, if the residual liquid is too low and does not meet the minimum volume requirement, the chemical composition analysis device may have difficulty detecting the residual liquid. Therefore, the analysis device is activated when the residual liquid is greater than the minimum volume value; the threshold Hq is the height of the residual liquid corresponding to the aforementioned preset minimum volume value.

[0071] Among them, the photochemical analysis device can analyze the residual liquid to be tested based on the emission or absorption of electromagnetic radiation by the substance and the interaction between the substance and electromagnetic radiation, and obtain the component M of the residual liquid to be tested; the spectroscopic analysis device is mainly based on optical theory and takes the interaction between the substance and light as the condition to establish the relationship between the molecular structure of the substance and electromagnetic radiation, so as to perform geometric isomerism, stereoisomerism, conformational isomerism and molecular structure analysis of the substance and identify the component M of the residual liquid to be tested.

[0072] In a specific embodiment, the detection chamber further includes a diluent injection port, and the cavity specifications include the bottom area S of the cavity. The method further includes:

[0073] Step S422: When the height H is less than the threshold Hq, the diluent injection port is opened to inject a preset volume Lz of diluent. The preset volume Lz is set to be greater than or equal to Hq*S*K, where K is a preset unit conversion factor. That is, when the remaining liquid is too little, the minimum value of the preset volume is the volume value at the height corresponding to the threshold. In other words, the volume of the injected diluent should be greater than or equal to the volume value corresponding to the threshold.

[0074] Step S424: Obtain the height H' of the diluted medical residual liquid using a height sensor;

[0075] Correspondingly, step S240, obtaining the volume L through preset detection cavity specification data and the acquired height H, includes:

[0076] Step S242: Obtain the volume L using the bottom area S, height H', and volume Lz, where L = S * H' * K - Lz ± W, and W is a preset error value.

[0077] In other words, when the height H of the residual liquid to be tested is less than the threshold Hq, it indicates that there is not enough residual liquid to accurately obtain component M through analysis. Therefore, the residual liquid needs to be diluted, and the height H' of the diluted medical residual liquid needs to be obtained. The volume L can then be calculated using the height H' of the diluted medical residual liquid. More specifically, dilution can be achieved by adding sterile water for injection or fresh sterile distilled water. The purpose of dilution is to prevent the residual liquid from being too small to calculate the height, and to increase the volume for easier calculation during component analysis. The key is that the diluent does not react with the solute in the original solution after addition, thus affecting the component analysis.

[0078] In a specific embodiment, the detection chamber also includes a cleaning fluid injection port.

[0079] Step S600, after obtaining the volume L and composition M of the residual liquid to be tested, controls the residual liquid to be tested to enter the recovery chamber through the channel, including:

[0080] Step S610: After obtaining the volume L and composition M of the residual liquid to be tested, the cleaning fluid injection port is activated to control the residual liquid to be tested to enter the recovery chamber through the channel; that is, after the detection of the residual liquid to be tested is completed, it is recovered into the recovery chamber through the cleaning fluid injection port.

[0081] In addition, during the specific implementation process, after the residual liquid to be tested is recovered into the recovery chamber, auxiliary drainage can be carried out, specifically by injecting air to drain the residual liquid remaining in the detection chamber.

[0082] In a specific embodiment, such as Figure 3 As shown, step S410, when the height H is obtained and the height H is greater than the threshold Hq, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested, including:

[0083] Step S412: Obtain the current composition spectrum generated by the chemical composition analysis device;

[0084] Step S414: Compare the current component spectrum with the preset standard component spectrum template;

[0085] Step S416: When the comparison results meet the preset conditions, extract the component results corresponding to the standard component spectrum to obtain component M.

[0086] More specifically, the composition spectrum can be a spectrum related to the components obtained after detection by a photochemical analysis device, a chromatographic analysis device, or a spectroscopic analysis device. For more specific explanation, let's assume that the composition spectrum here is the current composition spectrum detected by a spectroscopic analysis device; the horizontal axis of the spectrum represents the absorption wavelength range, and the vertical axis represents the absorption peak value. If a component in the current composition spectrum shows a corresponding absorption peak value in a certain wavelength range, then comparing it with the component appearing in that wavelength range in the preset standard composition spectrum template, this component is the residual liquid component M.

[0087] The medical residual liquid recovery method provided in this embodiment can accurately obtain the volume of the residual liquid to be tested and perform component detection. The entire process does not require manual intervention, which solves the problem of low efficiency of traditional detection methods. At the same time, this embodiment also comprehensively considers issues such as whether the amount of residual liquid to be tested is sufficient for component detection, and fully considers every detail in the detection and recovery process, making the method highly feasible.

[0088] Example 2

[0089] This embodiment provides a medical waste fluid recovery device, such as... Figure 4 As shown, it includes:

[0090] A controller for performing the medical residual fluid recovery method of Example 1;

[0091] It also includes a chemical composition analysis device, a detection chamber 1 and a recovery chamber 2. The detection chamber 1 is located above the recovery chamber 2, and the chemical composition analysis device is located at a preset position corresponding to the detection chamber 1. The upper part of the detection chamber 1 has a residual liquid injection port 11, and there is a channel 3 between the detection chamber 1 and the recovery chamber 2.

[0092] With the above structure, the residual liquid to be tested enters the detection chamber 1 through the residual liquid injection port 11. After the chemical composition analysis device in the detection chamber 1 obtains the composition of the residual liquid to be tested, it is recycled to the recovery chamber 2 through the channel 3.

[0093] In addition, a drain port 12 is provided at the bottom of the detection chamber 1. The drain port 12 is used to guide the residual liquid in the detection chamber 1 to the recovery chamber 2 through the channel 3.

[0094] In addition, the side wall of the detection chamber 1 is also provided with a cleaning fluid injection port 13 and a diluent injection port 14. The cleaning fluid injection port 13 is mainly used to control the residual liquid to be tested to enter the recovery chamber 2 through the channel 3 after the volume and composition of the residual liquid to be tested are obtained. The diluent injection port 14 is mainly used to inject a preset volume of diluent when the height of the residual liquid to be tested is less than the threshold.

[0095] In a specific embodiment, the detection chamber 1 is equipped with a height sensor 15, which is used to detect the height of the remaining liquid to be tested and calculate the volume in conjunction with the cross-sectional area of ​​the detection chamber 1.

[0096] In addition, a silent exhaust valve 21 is also provided on the recovery chamber 2.

[0097] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0098] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A method for recovering residual medical fluid, applied to a medical residual fluid recovery device, characterized in that, The medical waste liquid recovery device includes a chemical composition analysis device, a detection chamber, and a recovery chamber. The detection chamber has a waste liquid injection port at its upper part, and a channel exists between the detection chamber and the recovery chamber. The chemical composition analysis device is positioned at a preset position corresponding to the detection chamber. The method includes: When it is detected that the detection chamber has been injected with the residual liquid to be tested, the volume L of the residual liquid to be tested is obtained; Upon receiving a preset command, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested; After obtaining the volume L and composition M of the residual liquid to be tested, the residual liquid to be tested is controlled to enter the recovery chamber through the channel; The detection chamber is made of a transparent material, and the chemical composition analysis device is a photochemical analysis device, a chromatographic analysis device, or a spectroscopic analysis device. The detection port of the chemical composition analysis device is correspondingly set to the detection chamber. The step of activating the chemical composition analysis device to obtain the composition M of the residual liquid to be tested upon receiving a preset command includes: When a height H is obtained and the height H is greater than the threshold Hq, the chemical composition analysis device is activated to obtain the composition M of the residual liquid to be tested; wherein, the height H is the height of the residual liquid to be tested in the detection chamber.

2. The method for recovering residual medical fluid according to claim 1, characterized in that, The detection chamber is equipped with a height sensor. The step of obtaining the volume L of the residual liquid to be tested when the detection chamber is detected to be injected includes: When it is detected that the detection chamber is injected with the residual liquid to be tested, the height H of the residual liquid to be tested in the detection chamber is obtained; The volume L is obtained by using the preset specifications of the detection cavity and the acquired height H.

3. The method for recovering residual medical fluid according to claim 2, characterized in that, The height sensor is a capacitive level gauge, which is disposed on one side of the detection chamber wall. Obtaining the height H of the remaining liquid to be measured in the detection chamber includes: Obtain multiple real-time capacitance values ​​of the capacitance level gauge; When the changes in the multiple real-time capacitance values ​​are less than a preset value, the final value of the real-time capacitance value is obtained to obtain the height H.

4. The method for recovering residual medical fluid according to claim 2, characterized in that, The height sensor is an ultrasonic sensor, which is disposed at the bottom or top of the detection chamber. Obtaining the height H of the residual liquid to be tested in the detection chamber includes: Obtain multiple real-time ranging values ​​from the ultrasonic sensor; When the change in the plurality of real-time ranging values ​​is less than a preset value, the current data value of the ultrasonic sensor is obtained to obtain the height H.

5. The method for recovering residual medical fluid according to claim 4, characterized in that, The detection chamber further includes a diluent injection port, and the chamber specifications include the bottom area S of the chamber. The method further includes: When the height H is less than the threshold Hq, the diluent injection port is opened to inject a preset volume Lz of diluent, wherein the preset volume Lz is set to be greater than or equal to Hq*S*K, and K is a preset unit conversion factor; The height H' of the diluted medical residual liquid is obtained through the height sensor; Correspondingly, obtaining the volume L through the preset detection cavity specification data and the acquired height H includes: The volume L is obtained by using the bottom area S, the height H', and the volume Lz, where L = S * H' * K - Lz ± W, and W is a preset error value.

6. The method for recovering residual medical fluid according to claim 5, characterized in that, The detection chamber further includes a cleaning fluid injection port, and the step of controlling the residual liquid to be tested to enter the recovery chamber through the channel after obtaining the volume L and composition M of the residual liquid to be tested includes: After obtaining the volume L and composition M of the residual liquid to be tested, the cleaning fluid injection port is activated to control the residual liquid to be tested to enter the recovery chamber through the channel.

7. The method for recovering residual medical fluid according to claim 4, characterized in that, The step of activating the chemical composition analysis device to obtain the composition M of the residual liquid to be tested when the height H is obtained and the height H is greater than the threshold Hq includes: Obtain the current composition spectrum generated by the chemical composition analysis device; Compare the current component spectrum with the preset standard component spectrum template; When the comparison results meet the preset conditions, the component results corresponding to the standard component spectrum are extracted to obtain the component M.

8. A medical residual liquid recovery device, characterized in that, include: A controller for performing the medical waste recovery method as described in any one of claims 1-7; The device includes a chemical composition analysis apparatus, a detection chamber, and a recovery chamber. The detection chamber is located above the recovery chamber, and the chemical composition analysis apparatus is located at a preset position corresponding to the detection chamber.

9. The medical residual fluid recovery device according to claim 8, characterized in that, The detection chamber is equipped with a height sensor, and the top of the detection chamber is provided with a residual liquid injection port, a diluent injection port, and a cleaning liquid injection port, with the diluent injection port and the cleaning liquid injection port located on both sides of the residual liquid injection port.

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