Anesthetic needle inserting device for anesthesiology department

Abstract

The invention relates to the field of medical instruments, in particular to an anesthetic needle inserting device for the anesthesiology department, which comprises a needle cylinder, one end of the needle cylinder is connected with a medicine outlet, the medicine outlet is detachably connected with a connector, the connector is communicated with a needle tube, a piston assembly is slidably matched in the needle cylinder, the needle cylinder comprises an outer cylinder, and a first chamber and a second chamber are arranged in the outer cylinder. Medicine pushing assemblies are installed in the first cavity and the second cavity, the first cavity and the second cavity both communicate with the connector, and a conversion assembly is installed at the communicating position of the interior of the outer cylinder and the connector; a monitoring assembly used for monitoring the puncture part of the needle tube is installed at the end, away from the connector, of the needle tube, the monitoring assembly is in signal connection with a controller, and the controller is in signal connection with the conversion assembly and used for controlling the conversion assembly according to position information monitored by the monitoring assembly in real time. Therefore, the first chamber and the second chamber are respectively controlled to be communicated with the connector. The method is used for optimizing the operation process of combined spinal-epidural anesthesia and reducing the operation difficulty.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an anesthetic needle insertion device for anesthesia department. Background Art

[0002] In the clinical practice of anesthesiology, combined spinal-epidural anesthesia is a commonly used anesthesia method. It combines the advantages of subarachnoid anesthesia and epidural anesthesia, and can provide good analgesia and muscle relaxation for surgery. The traditional combined spinal-epidural anesthesia needle uses a structure with two needles sheathed together. The specific operation process is as follows: first, a thicker puncture needle (thick needle) is used for puncture, and the thick needle is pushed into the epidural space; then, a thinner puncture needle (thin needle) is inserted through the internal channel of the thick needle and continued to be pushed until the thin needle penetrates the subarachnoid space; finally, the corresponding anesthetic drugs are injected into the subarachnoid space and epidural space respectively.

[0003] However, this traditional combined spinal-epidural anesthesia needle has many disadvantages in actual use.

[0004] On the one hand, the operation process is cumbersome and complicated. Medical staff need to operate two needles in succession, and the position and depth of the two needles need to be precisely controlled during the puncture process, which requires extremely high operating skills and experience of medical staff. In the process of replacing needles and adjusting the position of needles, not only the operation time is increased and the efficiency of anesthesia operation is reduced, but also the puncture position is easily inaccurate due to operational errors, increasing the patient's discomfort and the risk of complications. For example, when inserting a thin needle from the inside of a thick needle, if the operation is improper, it may cause the thin needle to deviate from the correct puncture path and fail to accurately reach the subarachnoid space, thereby affecting the anesthesia effect.

[0005] On the other hand, there is a lack of real-time monitoring of the needle puncture site. During the puncture process, medical staff find it difficult to accurately and immediately determine the specific position and depth of the needle in the patient's body, relying solely on experience and feel. This makes it easy for problems such as puncture position deviation and improper puncture depth to occur during the puncture process. Once these problems occur, they may damage the patient's nerves and lead to serious consequences such as neurological dysfunction and lower limb paralysis. Furthermore, without timely information on the puncture status, medical staff cannot adjust the operation in a timely manner, increasing the risk of anesthesia.

[0006] Furthermore, existing anesthetic needles may not precisely control the timing of drug injection into different cavities. In traditional combined spinal-epidural anesthesia procedures, medical staff must manually control drug injection, making it difficult to accurately determine the order and timing of drug injections into the subarachnoid and epidural spaces. This can lead to uneven distribution of the anesthetic throughout the body, compromising the anesthetic effect and potentially increasing adverse drug reactions, causing unnecessary pain and risk to the patient.

[0007] In order to solve the above problems, the present invention provides an anesthesia needle insertion device for anesthesia department. Summary of the Invention

[0008] To solve the above problems, the present invention provides an anesthetic needle insertion device for anesthesia department, which is used to optimize the operation process of combined spinal-epidural anesthesia, reduce the difficulty of operation, realize real-time monitoring of the needle puncture site and accurately monitor the injection timing of drugs in different chambers, thereby improving the safety, efficiency and anesthetic effect of anesthesia operation.

[0009] In order to achieve the above-mentioned object, the technical solution of the present invention is as follows: an anesthetic needle insertion device for anesthesia department, comprising a syringe, one end of the syringe is fixedly connected to a drug outlet, a connector is detachably connected to the drug outlet, the connector is connected to a needle tube, a piston assembly for pushing anesthetic is slidably fitted inside the syringe, the syringe comprises an outer cylinder, a first chamber and a second chamber are provided inside the outer cylinder, the first chamber is used for filling anesthetic drugs for subarachnoid injection, the second chamber is used for filling anesthetic drugs for epidural injection, a drug pushing assembly is installed inside the first chamber and the second chamber, both the first chamber and the second chamber are connected to the connector, and a conversion assembly is installed at the connection between the first chamber and the second chamber and the connector;

[0010] A monitoring component for monitoring the puncture site of the needle is installed at the end of the needle away from the connector. The monitoring component signal is connected to the controller, and the controller is connected to the conversion component signal. The controller is used to control the conversion component according to the position information monitored in real time by the monitoring component, and the first chamber and the second chamber are respectively controlled to be connected to the connector through the conversion component.

[0011] The above scheme has the following beneficial effects:

[0012] 1. Compared with the prior art that uses a combined spinal-epidural anesthesia needle with two needles put together (first use a thick needle to puncture into the epidural space, then insert a thin needle from the inside of the thick needle until it penetrates the subarachnoid space, and then administer the drug to the arachnoid and epidural space respectively), this solution simplifies the operation process and reduces the difficulty of operation. This solution uses a spinal anesthesia needle, first performs a subarachnoid space puncture to administer the drug, and then withdraws a little bit to the epidural space to administer the drug, realizing a combined spinal-epidural puncture with one needle. This design greatly simplifies the anesthesia operation process, reduces the tedious steps of medical staff such as changing needles and adjusting the position of needles during the operation, reduces the difficulty of operation, improves the efficiency of anesthesia operation, and also reduces the risks that may be caused by multiple operations, such as puncture errors and increased infection rate.

[0013] 2. Compared with the anesthetic needles in the prior art that may lack real-time monitoring of the needle puncture site, this solution realizes real-time monitoring and improves the safety of anesthesia. This solution installs a monitoring component for monitoring the needle puncture site at the end of the needle away from the connector, and the monitoring component is connected to the controller signal. By monitoring the position information of the needle puncture site in real time, the controller can timely grasp the key parameters such as the depth and position of the puncture, and control the conversion component based on this information, thereby controlling the first chamber and the second chamber to be connected to the connector respectively, ensuring that the anesthetic drug can be accurately injected into the subarachnoid space and the epidural space. This real-time monitoring mechanism can timely detect abnormal conditions during the puncture process, such as puncture position deviation, improper puncture depth, etc., which is convenient for medical staff to adjust the operation in time to avoid serious consequences such as nerve damage and poor anesthesia effect caused by puncture errors, thereby greatly improving the safety of anesthesia operations.

[0014] 3. Compared with the anesthetic needles in the prior art that may not be able to accurately control the timing of drug injection in different chambers, this solution accurately controls drug injection and optimizes the anesthetic effect. This solution uses a controller to accurately control the conversion component based on the position information monitored in real time by the monitoring component, thereby achieving separate control of the connection between the first chamber (for filling anesthetic drugs for subarachnoid space injection) and the second chamber (for filling anesthetic drugs for epidural space injection) and the connector. This enables medical staff to accurately inject different types of anesthetic drugs into the corresponding parts at the appropriate time according to the patient's specific situation and anesthesia needs, ensuring that both the subarachnoid space and the epidural space can obtain the appropriate drug dosage and injection timing, thereby optimizing the anesthetic effect, reducing the adverse reactions of anesthetic drugs, and improving patient comfort and surgical safety.

[0015] Furthermore, the medicine pushing assembly includes a first push rod and a second push rod, both of which are fixedly connected to a piston, the piston slidingly cooperates with the inside of the syringe, and the first push rod and the second push rod are fixedly connected to a push plate at one end away from the piston.

[0016] Beneficial Effects: Compared to existing anesthetic needles that may require complex manipulation to achieve drug injection in different chambers, in this solution, medical staff only need to push the push plate to simultaneously or separately drive the first and second push rods to move, thereby pushing the piston to complete drug injection. This design makes operation more convenient, eliminating the need for medical staff to perform complex manipulations on each push rod separately, reducing the number of steps and time required.

[0017] Furthermore, the conversion component includes a connecting pipe with a three-way structure, and the three interfaces of the connecting pipe are respectively connected to the first chamber, the second chamber and the connecting head. A solenoid valve is installed in the connecting pipe, and the solenoid valve includes a first solenoid valve and a second solenoid valve. The first solenoid valve is arranged at the connection between the first chamber and the connecting pipe, and the second solenoid valve is arranged at the connection between the second chamber and the connecting pipe. The solenoid valve is connected to the controller signal, and the controller controls the connection between the first chamber and the second chamber and the connecting head respectively by controlling the opening and closing of the first solenoid valve and the second solenoid valve.

[0018] Beneficial effect: The solenoid valve is connected to the controller signal, and the controller can accurately control the opening and closing of the first solenoid valve and the second solenoid valve according to the position information monitored in real time by the monitoring component. This design allows the connection between the first chamber (anesthetic drug injected into the subarachnoid space) or the second chamber (anesthetic drug injected into the epidural space) and the connector to be accurately switched as needed during the anesthesia operation, ensuring that the anesthetic drugs in different chambers can be accurately injected into the corresponding parts, greatly improving the accuracy of the anesthesia operation, effectively avoiding anesthesia errors caused by inaccurate drug channel switching, and ensuring the safety and effectiveness of anesthesia treatment.

[0019] Furthermore, the monitoring component includes a first pressure sensor and a negative pressure sensor. The first pressure sensor is used to monitor the pressure data of the needle tube at the puncture site under external pressure, and the negative pressure sensor is used to monitor the negative pressure data inside the needle tube at the puncture site. Both the first pressure sensor and the negative pressure sensor are connected to the controller signal.

[0020] When the pressure data monitored by the first pressure sensor and the negative pressure data monitored by the negative pressure sensor meet the subarachnoid space threshold conditions preset in the controller, the controller controls the first chamber to be connected to the connector to perform subarachnoid drug administration;

[0021] When the pressure data monitored by the first pressure sensor and the negative pressure data monitored by the negative pressure sensor meet the epidural space threshold conditions preset in the controller, the controller controls the second chamber to be connected to the connector for epidural medication.

[0022] Beneficial effects: Since the subarachnoid space and epidural space have different pressure and negative pressure characteristics, the controller can accurately determine whether the current location of the needle is the subarachnoid space or the epidural space based on the preset corresponding threshold conditions. When the subarachnoid space threshold condition is met, the controller controls the first chamber to connect with the connector for subarachnoid space drug administration; when the epidural space threshold condition is met, the controller controls the second chamber to connect with the connector for epidural space drug administration. This method of precise judgment and automatic control avoids errors in the drug injection position due to human judgment errors, ensures that anesthetic drugs can be accurately injected into the target chamber, and improves the accuracy and effectiveness of anesthesia.

[0023] Furthermore, a first scale line is provided on the outer wall of the needle tube. The first scale line is evenly marked starting from the end of the needle tube away from the connector, and the value of the scale mark gradually increases as it approaches the connector end.

[0024] Beneficial Effects: When performing anesthesia punctures, doctors can intuitively and accurately determine the depth of needle insertion by observing the first graduation mark on the outer wall of the needle. During subarachnoid and epidural punctures, different cavities have specific optimal puncture depth ranges. With the help of the first graduation mark, doctors can more accurately control the insertion depth of the needle to ensure that the needle reaches the target cavity, avoiding excessive puncture that could damage nerve tissue or excessive puncture that could prevent the anesthetic from reaching the target site, thereby greatly improving the accuracy of the anesthesia procedure.

[0025] Furthermore, the outer wall of the outer cylinder is provided with second scale lines, and the second scale lines are arranged corresponding to the first chamber and the second chamber.

[0026] Beneficial Effects: During the anesthesia procedure, medical staff can clearly and accurately grasp the remaining amount of anesthetic drugs in the first chamber (subarachnoid space injection anesthetic drugs) and the second chamber (epidural space injection anesthetic drugs) at any time by observing the second scale line. This allows medical staff to prepare for drug replenishment or adjustment of the anesthesia plan in advance based on the remaining drug, avoiding interruptions to the anesthesia procedure due to insufficient drugs, ensuring that the anesthesia process can be carried out smoothly and coherently, and guaranteeing the smooth progress of the operation.

[0027] Furthermore, a displacement sensor is installed on the piston, and a second pressure sensor is installed on the push plate. Both the displacement sensor and the second pressure sensor are connected to the controller signal;

[0028] The displacement sensor is used to monitor the distance the piston moves in the syringe in real time. The controller calculates the amount of anesthetic drug ejected from the first chamber and the second chamber based on the displacement sensor data and the preset dimensional parameters of the syringe chamber.

[0029] The second pressure sensor is used to monitor the second pressure data applied by the doctor when operating the push plate to push the medicine pushing component. When the second pressure data exceeds the safety threshold preset in the controller, the second pressure sensor transmits a signal to the controller, and the controller issues an alarm to remind medical staff that the operating pressure is too high.

[0030] Beneficial Effects: The displacement sensor monitors the piston's movement within the syringe in real time. The controller, combined with preset syringe chamber dimensions, accurately calculates the amount of anesthetic drug delivered to the first and second chambers. This precise metering method allows medical staff to strictly follow the anesthesia plan and the patient's actual needs, accurately controlling the injection dose of anesthetic drugs in different chambers. This avoids poor anesthetic effects or adverse reactions caused by dosage deviations, improves the accuracy and reliability of anesthesia procedures, and helps ensure surgical safety and patient health.

[0031] The second pressure sensor is used to monitor the second pressure data applied by the doctor when operating the push plate in real time. This real-time monitoring and early warning mechanism enables medical staff to quickly adjust the operating force to avoid adverse consequences caused by excessive pressure, effectively ensuring the safety of anesthesia operations.

[0032] Furthermore, an early warning component is installed on the side wall of the push plate. The early warning component includes an indicator light and a buzzer. Both the indicator light and the buzzer are connected to the controller signal. When the controller determines that there is a risk in the operation based on the monitoring component data, or the monitoring data of the second pressure sensor and the displacement sensor are abnormal, the controller triggers the indicator light to flash and the buzzer to alarm.

[0033] Beneficial Effects: The combination of a flashing indicator light and a buzzer alarm provides a more intuitive and effective way to alert medical staff. The flashing indicator light attracts their visual attention, while the buzzer alarm alerts them audibly. This combined audio and visual warning method allows medical staff to receive timely warning information, allowing them to react quickly, adjust their operations, or take appropriate measures, regardless of their operating environment or attention level.

[0034] Furthermore, it also includes a protective sleeve, which is arranged on the outside of the needle tube, and the protective sleeve and the needle tube are detachably connected.

[0035] Benefits: By effectively protecting the needle when not in use and promptly replacing the protective cover after use, the protective cover reduces the needle's contact with the external environment and reduces the risk of cross-infection. This helps hospitals better implement infection control measures, improve the safety and reliability of medical services, provide patients with a better medical environment, and ultimately enhance the hospital's overall medical quality and reputation.

[0036] Furthermore, the surface of the push plate is provided with anti-slip grooves; and a sealing ring is provided at the connection between the connector and the needle tube.

[0037] Beneficial effects: The anti-slip texture design on the push plate surface not only improves the stability of the operation, but also enhances the operating experience of medical staff. In emergency or long-term operations, the anti-slip texture can reduce hand fatigue, allowing medical staff to complete anesthesia operations more easily and stably, indirectly improving work efficiency and operation quality. Leakage of anesthetic drugs will not only lead to drug waste, but may also affect the anesthesia effect and even cause medical accidents. The sealing ring effectively prevents the risk of leakage of anesthetic drugs at the connection between the connector and the syringe, which not only avoids drug waste, but also avoids environmental pollution and safety hazards that may be caused by drug leakage. At the same time, the presence of the sealing ring ensures the sealing of the anesthetic drug delivery system, ensuring that the drug can be accurately and stably delivered to the patient's body, and improving the safety and reliability of anesthesia operations.

[0038] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is an axonometric view of an embodiment of an anesthesia needle insertion device for anesthesia department of the present invention;

[0040] Figure 2 This is a front view of an embodiment of an anesthesia needle insertion device for anesthesia department of the present invention;

[0041] Figure 3 for Figure 2 Cross-sectional view in the AA direction;

[0042] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle;

[0043] Figure 5 This is a schematic diagram of the installation of a protective sleeve in an embodiment of the anesthesia needle insertion device for anesthesia department of the present invention.

[0044] The reference numerals in the drawings of the specification include: 1. outer cylinder; 101. first chamber; 102. second chamber; 2. connector; 3. needle tube; 4. first push rod; 5. second push rod; 6. piston; 7. push plate; 8. connecting pipe; 9. first solenoid valve; 10. second solenoid valve; 11. second scale line; 12. protective cover. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0048] The following is further described in detail through specific implementation methods:

[0049] Example 1:

[0050] As attached Figures 1 to 4 As shown: An anesthesia needle insertion device for anesthesia department, including a syringe, one end of the syringe is fixedly connected to a drug outlet, the drug outlet is detachably connected to a connector 2, the connector 2 is fixedly connected to a needle tube 3, and a sealing ring is provided at the connection between the connector 2 and the needle tube 3. The sealing ring is used to prevent the anesthetic drug from leaking at the connection, and the sealing ring is tightly fitted on the contact surface between the connector 2 and the needle tube 3. The outer wall of the needle tube 3 is provided with a first scale line, which is marked starting from the end of the needle tube 3 away from the connector 2, and a scale mark is set at a certain interval, and the value of the scale mark gradually increases as it approaches the end of the connector 2; the first scale line is used to assist the doctor in observing the depth of the needle tube 3 inserted into the human body and judging the position reached by the needle tube 3. In this embodiment, the manufacturing material of the needle tube 3 can be selected from high-strength, biocompatible metal alloys (such as stainless steel, titanium alloy, etc.) or polymer materials (such as polycarbonate, polyetheretherketone, etc.). These materials can meet the requirements of the needle tube 3 being thin and tough, and can ensure safety and effectiveness in clinical use. The needle tip portion of the needle tube 3 that is inserted into the human body is designed in the style of a ballpoint pen tip, so as to further improve the safety of the anesthesia operation and the comfort of the patient.

[0051] A piston assembly for pushing the anesthetic drug slides within the syringe. The syringe comprises an outer barrel 1, the outer wall of which is provided with second scale lines 11. The second scale lines 11 are arranged corresponding to the first chamber 101 and the second chamber 102, and are used to respectively display the remaining amount of anesthetic drug in the first chamber 101 and the second chamber 102. The first and second scale lines 11 provide medical personnel with an intuitive reference for depth and drug dosage, allowing them to more quickly and accurately determine the insertion depth of the needle tube 3 and the remaining amount of drug, thereby optimizing the anesthesia operation process and improving surgical efficiency.

[0052] The outer tube 1 is provided with a first chamber 101 and a second chamber 102 (refer to Figure 3 ), the first chamber 101 is used to fill anesthetic drugs for subarachnoid space injection, and the second chamber 102 is used to fill anesthetic drugs for epidural space injection. A medicine pushing assembly is installed inside the first chamber 101 and the second chamber 102, and the medicine pushing assembly includes a first push rod 4 and a second push rod 5. The first push rod 4 and the second push rod 5 are both fixedly connected to a piston 6, and the piston 6 slides with the inside of the syringe. The first push rod 4 and the second push rod 5 are fixedly connected to a push plate 7 at one end away from the piston 6. The surface of the push plate 7 is provided with anti-slip grooves. The anti-slip grooves on the surface of the push plate 7 increase the friction between the hands of medical staff and the push plate 7, thereby avoiding slipping when pushing the push rod to perform drug administration operations and improving the stability of the operation.

[0053] The first chamber 101 and the second chamber 102 are both connected to the connector 2. A conversion assembly is installed at the connection between the first chamber 101 and the second chamber 102 and the connector 2; the conversion assembly includes a three-way connecting pipe 8 (refer to Figure 4 ), the three interfaces of the connecting tube 8 are respectively connected to the first chamber 101, the second chamber 102 and the connector 2, and a solenoid valve is installed in the connecting tube 8, the solenoid valve includes a first solenoid valve 9 and a second solenoid valve 10, the first solenoid valve 9 is arranged at the connection between the first chamber 101 and the connecting tube 8, and the second solenoid valve 10 is arranged at the connection between the second chamber 102 and the connecting tube 8, and a monitoring component for monitoring the puncture site of the needle tube 3 is installed at the end of the needle tube 3 away from the connector 2, the monitoring component signal is connected to the controller, and the solenoid valve is connected to the controller signal.

[0054] The monitoring component includes a first pressure sensor and a negative pressure sensor (neither of which is shown in the figure). The first pressure sensor is used to monitor the pressure changes of the needle tube 3 at the puncture site, and the negative pressure sensor is used to monitor the negative pressure changes of the needle tube 3 at the puncture site. The first pressure sensor and the negative pressure sensor are both connected to the controller signal; when the pressure data monitored by the first pressure sensor and the negative pressure data monitored by the negative pressure sensor meet the threshold conditions of the subarachnoid space preset in the controller, the controller controls the opening of the first solenoid valve 9, so that the first chamber 101 is connected to the connector 2 for subarachnoid drug administration; when the pressure data monitored by the first pressure sensor and the negative pressure data monitored by the negative pressure sensor meet the threshold conditions of the epidural space preset in the controller, the controller controls the opening of the second solenoid valve 10, so that the second chamber 102 is connected to the connector 2 for epidural drug administration.

[0055] The specific implementation process is as follows:

[0056] 1. Equipment preparation stage:

[0057] Before using the anesthesia needle insertion device for anesthesia department of the present invention, medical staff should first conduct a comprehensive equipment inspection. Check whether the syringe, needle tube 3 and connector 2 and other components are intact, and whether there are cracks, deformations, etc. Check whether the sealing ring is firmly installed and whether there are signs of damage or aging, to ensure that its sealing performance is good to prevent anesthetic drug leakage. Calibrate the monitoring components (first pressure sensor and negative pressure sensor), and adjust the threshold parameters of the controller so that it can accurately identify the characteristic data of the subarachnoid space and epidural space. At the same time, check whether the signal connection between the solenoid valve and the controller is normal to ensure that the controller can accurately control the opening and closing of the first solenoid valve 9 and the second solenoid valve 10.

[0058] Then, following standard operating procedures, the anesthetic drug required for injection into the subarachnoid space is carefully filled into the first chamber 101, while the anesthetic drug required for injection into the epidural space is simultaneously filled into the second chamber 102. During the filling process, care is taken to avoid drug contamination and ensure drug purity and effectiveness. After filling is completed, the second scale mark 11 on the outer wall of the outer tube 1 is observed to confirm whether the drug filling volume meets the surgical requirements.

[0059] 2. Puncture operation stage

[0060] The medical staff determines the anesthesia puncture site according to the surgical requirements and performs strict skin disinfection to prevent infection. The device with the needle tube 3 installed is held in the hand and the puncture angle and direction are adjusted.

[0061] The needle tube 3 is slowly advanced toward the puncture site. During this process, the medical professional can observe the first scale line on the outer wall of the needle tube 3 to roughly determine the insertion depth of the needle tube 3. Simultaneously, the first pressure sensor and negative pressure sensor in the monitoring assembly begin to monitor the pressure and negative pressure changes of the needle tube 3 at the puncture site in real time and transmit the data to the controller.

[0062] As the needle tube 3 continues to go deeper, when the pressure data monitored by the first pressure sensor and the negative pressure data monitored by the negative pressure sensor meet the threshold conditions of the subarachnoid space preset in the controller, the controller will immediately send a signal to control the first solenoid valve 9 to open, so that the first chamber 101 is connected to the connector 2. At this time, the medical staff can slowly push the first push rod 4 to inject the subarachnoid injection anesthetic drug in the first chamber 101 into the subarachnoid space through the needle tube 3. During the drug administration process, continue to observe the first scale line to ensure that the drug is accurately injected into the target position. At the same time, the remaining amount of the drug in the first chamber 101 can be understood in real time through the second scale line 11 on the outer wall of the outer tube 1, so as to adjust the drug administration speed and dosage in time.

[0063] Specifically, under normal circumstances, pressure varies across different tissues of the human body. As the needle tube 3 gradually penetrates deeper, but before reaching the subarachnoid space, the pressure exerted on the front end of the needle tube 3 by the surrounding tissues remains relatively stable and within a certain range. For example, when passing through tissues such as the skin, subcutaneous tissue, and paravertebral muscles, the pressure value detected by the first pressure sensor may fluctuate continuously between 0.5 and 1.5 kPa. This is because the density and elasticity of these tissues are relatively uniform, resulting in little change in the pressure exerted on the needle tube 3.

[0064] When the needle tube 3 approaches the subarachnoid space, due to the presence of cerebrospinal fluid in the subarachnoid space, its pressure characteristics are significantly different from those of the surrounding tissues. The cerebrospinal fluid has a certain pressure, usually around 0.7-1.8 kPa (supine position). When the needle tube 3 pierces the dura mater and enters the subarachnoid space, the pressure monitored by the first pressure sensor will suddenly show a more obvious change. For example, the pressure value may rise rapidly from the previous stable range in the tissue to a range close to the cerebrospinal fluid pressure. Assuming that the pressure was previously stable at around 1.2 kPa, the moment the needle tube 3 enters the subarachnoid space, the pressure value may rise rapidly to 1.5 kPa and above, and this pressure value will remain relatively stable in a new range, such as 1.5-1.8 kPa, under the buffering effect of the cerebrospinal fluid.

[0065] Before the needle tube 3 reaches the subarachnoid space, the negative pressure data monitored by the negative pressure sensor is usually small or has no obvious pattern. For example, during the puncture process, due to factors such as friction between the needle tube 3 and the surrounding tissue, some small negative pressure fluctuations may occur, but the value is generally small, perhaps between -0.1 and 0.1 kPa.

[0066] When needle 3 enters the subarachnoid space, the negative pressure sensor may detect a brief negative pressure change due to the fluidity of the cerebrospinal fluid and the relatively closed environment. For example, when needle 3 breaks through the dura mater and enters the subarachnoid space, a small negative pressure pulse may be generated, with a negative pressure value between -0.05 and -0.2 kPa (the specific value varies depending on individual differences and puncture conditions), after which the negative pressure gradually returns to a stable state. This brief negative pressure change is one of the important characteristics for determining whether needle 3 has entered the subarachnoid space.

[0067] The controller performs a comprehensive analysis of the data monitored by the first pressure sensor and the negative pressure sensor. Only when the pressure data stabilizes within the subarachnoid pressure threshold range (e.g., 1.2-2.0 kPa, which may vary between individuals) and the negative pressure sensor detects a characteristic negative pressure change (such as the brief negative pressure pulse described above) does it determine that the needle tube 3 has reached the subarachnoid space. At this point, the controller sends a signal to control the opening of the first solenoid valve 9, connecting the first chamber 101 to the connector 2 to facilitate the injection of anesthetic drugs into the subarachnoid space.

[0068] After administering the drug into the subarachnoid space, the medical professional slowly withdraws the needle tube 3 a certain distance from the subarachnoid space to prepare for administering the drug into the epidural space. During this withdrawal process, the monitoring component continuously monitors changes in pressure and negative pressure at the puncture site. As the position of the needle tube 3 changes, the monitoring data also changes accordingly.

[0069] When the pressure data monitored by the first pressure sensor and the negative pressure data monitored by the negative pressure sensor meet the epidural space threshold conditions preset in the controller, the controller will quickly control the first solenoid valve 9 to close and simultaneously open the second solenoid valve 10, connecting the second chamber 102 with the connector 2. At this point, the medical staff can push the second push rod 5 to inject the epidural anesthetic in the second chamber 102 into the epidural space through the needle tube 3. Similarly, during the drug administration process, the first scale line on the needle tube 3 and the second scale line 11 on the outer wall of the outer tube 1 should be closely observed to ensure the accuracy and safety of the drug administration operation.

[0070] After the epidural administration is complete, confirm that the drug injection dose meets the surgical requirements. At this time, stop pushing the push rod and turn off the controller. Slowly remove the needle tube 3 from the patient's body. Be careful to be gentle during the removal process to avoid causing unnecessary damage to the patient.

[0071] For example, after completing the subarachnoid medication, the medical staff slowly withdraws the needle tube 3 to a certain distance and prepares for epidural medication. At this time, the monitoring component continuously monitors the pressure and negative pressure changes at the puncture site, and determines whether the epidural space has been reached by comparing it with the epidural space threshold conditions preset in the controller:

[0072] When needle tube 3 exits the subarachnoid space and enters the epidural space, the pressure environment of the surrounding tissue changes. The pressure of the epidural space is different from that of the subarachnoid space. For example, the pressure of the epidural space may be relatively stable between 1.0-2.0 kPa (the specific value varies depending on the individual and the puncture site). When the pressure data monitored by the first pressure sensor stabilizes within this range, it may be a signal that the needle has reached the epidural space.

[0073] At the same time, in the epidural space, due to the characteristics of tissue structure and liquid distribution, the negative pressure data monitored by the negative pressure sensor will also show a specific pattern. For example, in the epidural space, the negative pressure value may be relatively small and the fluctuation range is narrow, which may be between -0.1-0.1kPa. When the data monitored by the negative pressure sensor meets this range, and after comprehensive analysis with the pressure data, it meets the epidural space threshold conditions preset in the controller (such as pressure 1.0-2.0kPa and negative pressure -0.1-0.1kPa), the controller will trigger the corresponding operation, control the first solenoid valve 9 to close, and the second solenoid valve 10 to open, switching to the epidural space drug delivery mode.

[0074] Example 2:

[0075] The difference from Example 1 is that a displacement sensor is installed on the piston 6 and a second pressure sensor is installed on the push plate 7, and both the displacement sensor and the second pressure sensor are connected to the controller signal; the displacement sensor is used to monitor the movement distance of the piston 6 in the syringe in real time, and the controller calculates the amount of anesthetic drugs pushed out in the first chamber 101 and the second chamber 102 based on the displacement sensor data combined with the preset size parameters of the syringe inner chamber; the second pressure sensor is used to monitor the second pressure data applied by the doctor when operating the push plate 7 to push the drug pushing component. When the second pressure data exceeds the safety threshold preset in the controller, the second pressure sensor transmits a signal to the controller, and the controller issues an alarm to remind medical staff that the operating pressure is too high.

[0076] The specific implementation process is as follows: the medical staff holds the syringe and slowly pushes the push plate 7 according to clinical operation specifications to move the piston 6 in the syringe and push the anesthetic drug out of the first chamber 101 and the second chamber 102 respectively.

[0077] During the pushing process, the displacement sensor monitors the distance moved by the piston 6 in the syringe in real time and transmits the data to the controller. At the same time, the second pressure sensor monitors the second pressure data applied by the medical staff when operating the push plate 7 and also transmits it to the controller in real time.

[0078] After receiving the piston 6 travel distance data from the displacement sensor, the controller, combined with the preset dimensional parameters of the syringe chamber (such as the chamber diameter and length), uses a built-in calculation formula to accurately calculate the amount of anesthetic drug released from the first chamber 101 and the second chamber 102. The calculation results are communicated to medical staff through the controller, allowing them to check the anesthetic drug delivery progress and remaining amount at any time, so as to accurately control the drug dosage according to surgical needs.

[0079] The controller continuously monitors and analyzes the pressure data transmitted by the second pressure sensor. If the second pressure data does not exceed the preset safety threshold, the controller records the pressure data normally without issuing an alarm, and the system continues to operate stably. If the second pressure data exceeds the preset safety threshold, the second pressure sensor immediately transmits a signal to the controller.

[0080] Upon receiving the over-limit signal, the controller promptly issues an alarm, which may be a combination of an audible alarm (e.g., a sharp beep) and a visual alarm, to draw the attention of medical personnel. Upon hearing the alarm, medical personnel should immediately stop pushing the push plate 7 and check for any abnormalities during operation, such as a syringe blockage or excessive pressure. They should then take appropriate measures, such as adjusting the operating method or replacing the syringe, based on the actual situation.

[0081] Example 3:

[0082] The difference from Example 2 is that an early warning component is installed on the side wall of the push plate 7, which includes an indicator light and a buzzer. The indicator light and the buzzer are both connected to the controller signal. When the controller determines that there is a risk in the operation based on the monitoring component data, or the monitoring data of the second pressure sensor and the displacement sensor are abnormal, the controller triggers the indicator light to flash and the buzzer to alarm, reminding medical staff.

[0083] The specific implementation process is as follows: When the controller determines that there is a risk in the operation (such as inadequate puncture, etc.) based on the data of the monitoring component, or when the monitoring data of the second pressure sensor and the displacement sensor are abnormal (such as the operating pressure of the push plate 7 is close to or exceeds the safety threshold, the piston 6 moves too fast, etc.), the controller immediately triggers the early warning component. Specifically, if the puncture is not in place, resulting in abnormal drug delivery, or the operating pressure of the push plate 7 is close to the safety threshold (such as an early warning when it reaches 80% of the threshold). The second pressure sensor shows that the operating pressure of the push plate 7 is close to or exceeds the safety threshold (such as a warning when it reaches 90% of the threshold), the displacement sensor shows that the piston 6 moves too fast (such as a warning when it exceeds 80% of the preset speed), etc., the controller triggers the early warning component.

[0084] The indicator light begins to flash and the buzzer sounds, alerting the medical staff to an operational problem. Upon hearing the alarm, the medical staff should immediately stop pushing the push plate 7 and check for any abnormalities during operation, such as whether the syringe is clogged, excessive pressure is applied, or sensor interference is detected. Based on the inspection results, appropriate measures should be taken, such as adjusting the operating method, cleaning the syringe, and checking the sensor connection, until the warning is resolved and the device returns to normal operation.

[0085] Example 4:

[0086] As attached Figure 5 As shown, the difference from Example 3 is that it also includes a protective sleeve 12, which is arranged on the outside of the needle tube 3. The protective sleeve 12 and the needle tube 3 are detachably connected. The protective sleeve 12 is used to protect the needle tube 3 when not in use to prevent the needle tube 3 from being contaminated or damaged. At the same time, the protective sleeve 12 can be put back on after the puncture is completed to prevent the needle tube 3 from accidentally injuring others.

[0087] The specific implementation process is as follows: During use, medical personnel should wash their hands and wear sterile gloves to ensure a sterile operating environment. Hold the needle tube 3 with one hand and the protective cover 12 with the other. Gently twist and pull the protective cover 12 upward. Be careful to move gently to avoid excessive force that may cause the needle tube 3 to shake or damage the needle tip. Place the removed protective cover 12 in a designated clean area to avoid contact with contaminants.

[0088] In accordance with clinical operating specifications, use the needle tube 3 to perform the puncture operation. During the puncture process, attention should be paid to the accuracy and safety of the operation to avoid causing unnecessary harm to the patient. After the puncture is completed, pick up the protective cover 12 previously placed in the clean area, align the open end of the protective cover 12 with the needle tip of the needle tube 3, and slowly put the protective cover 12 on the needle tube 3. During the insertion process, care should be taken to avoid the needle tip from contacting the outside of the protective cover 12 or other objects to prevent contamination. When the protective cover 12 is completely put on the needle tube 3, check whether the protective cover 12 is firmly installed and whether it can effectively prevent the needle tube 3 from accidentally injuring others. The needle tube 3 with the protective cover 12 should be properly disposed of in accordance with the medical waste disposal regulations to avoid the needle tube 3 from being reused or causing pollution to the environment.

[0089] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An anesthetic needle insertion device for anesthesia department, comprising a syringe, one end of the syringe is fixedly connected to a drug outlet, a connector (2) is detachably connected to the drug outlet, the connector (2) is connected to a needle tube (3), and a piston assembly for pushing anesthetic drugs is slidably fitted inside the syringe, characterized in that: The syringe comprises an outer cylinder (1), wherein a first chamber (101) and a second chamber (102) are provided inside the outer cylinder (1), wherein the first chamber (101) is used for filling anesthetic drugs for injection into the subarachnoid space, and the second chamber (102) is used for filling anesthetic drugs for injection into the epidural space, wherein medicine pushing components are installed inside the first chamber (101) and the second chamber (102), and both the first chamber (101) and the second chamber (102) are connected to the connector (2), and a conversion component is installed at the connection point between the first chamber (101) and the second chamber (102) and the connector (2); A monitoring component for monitoring the puncture site of the needle tube (3) is installed at one end of the needle tube (3) away from the connector (2). The monitoring component signal is connected to a controller, and the controller is connected to the conversion component signal. The controller is used to control the conversion component based on the position information monitored in real time by the monitoring component, and the conversion component is used to control the first chamber (101) and the second chamber (102) to communicate with the connector (2).

2. The anesthesia needle insertion device for anesthesia according to claim 1, characterized in that: The medicine pushing assembly comprises a first push rod (4) and a second push rod (5), wherein the first push rod (4) and the second push rod (5) are both fixedly connected to a piston (6), the piston (6) is slidably matched with the interior of the syringe, and the first push rod (4) and the second push rod (5) are fixedly connected to a push plate (7) at one end away from the piston (6).

3. The anesthesia needle insertion device for anesthesia according to claim 2, characterized in that: The conversion component comprises a connecting pipe (8) of a three-way structure, wherein three interfaces of the connecting pipe (8) are respectively connected with the first chamber (101), the second chamber (102) and the connector (2); a solenoid valve is installed in the connecting pipe (8), and the solenoid valve comprises a first solenoid valve (9) and a second solenoid valve (10); the first solenoid valve (9) is arranged at the connection point between the first chamber (101) and the connecting pipe (8), and the second solenoid valve (10) is arranged at the connection point between the second chamber (102) and the connecting pipe (8); the solenoid valve is connected to a controller signal, and the controller controls the connection between the first chamber (101) and the second chamber (102) and the connector (2) by controlling the opening and closing of the first solenoid valve (9) and the second solenoid valve (10).

4. The anesthesia needle insertion device for anesthesia according to claim 3, characterized in that: The monitoring component includes a first pressure sensor and a negative pressure sensor, the first pressure sensor is used to monitor the pressure data of the needle tube (3) at the puncture site under external pressure, and the negative pressure sensor is used to monitor the negative pressure data inside the needle tube (3) at the puncture site, and both the first pressure sensor and the negative pressure sensor are connected to the controller signal; When the pressure data monitored by the first pressure sensor and the negative pressure data monitored by the negative pressure sensor meet the subarachnoid space threshold conditions preset in the controller, the controller controls the first chamber (101) to be connected to the connector (2) to perform subarachnoid space drug administration; When the pressure data monitored by the first pressure sensor and the negative pressure data monitored by the negative pressure sensor meet the epidural space threshold conditions preset in the controller, the controller controls the second chamber (102) to be connected to the connector (2) for epidural space drug administration.

5. The anesthesia needle insertion device for anesthesia according to claim 4, characterized in that: The outer wall of the needle tube (3) is provided with a first scale mark, the first scale mark being evenly marked starting from the end of the needle tube (3) away from the connector (2), and the value of the scale mark gradually increases as it approaches the end of the connector (2).

6. The anesthesia needle insertion device for anesthesia according to claim 5, characterized in that: The outer wall of the outer cylinder (1) is provided with a second scale line (11), and the second scale line (11) is arranged corresponding to the first chamber (101) and the second chamber (102).

7. The anesthesia needle insertion device for anesthesia according to claim 6, characterized in that: A displacement sensor is installed on the piston (6), and a second pressure sensor is installed on the push plate (7). Both the displacement sensor and the second pressure sensor are connected to the controller signal. The displacement sensor is used to monitor the moving distance of the piston (6) in the syringe in real time, and the controller calculates the amount of anesthetic drug pushed out of the first chamber (101) and the second chamber (102) based on the displacement sensor data and the preset size parameters of the syringe chamber. The second pressure sensor is used to monitor the second pressure data applied by the doctor when operating the push plate (7) to push the medicine pushing component. When the second pressure data exceeds a safety threshold preset in the controller, the second pressure sensor transmits a signal to the controller, and the controller issues an alarm to remind the medical staff that the operating pressure is too high.

8. The anesthesia needle insertion device for anesthesia according to claim 7, characterized in that: The side wall of the push plate (7) is equipped with an early warning component, which includes an indicator light and a buzzer. The indicator light and the buzzer are both connected to the controller signal. When the controller determines that there is a risk in the operation based on the monitoring component data, or when the monitoring data of the second pressure sensor and the displacement sensor are abnormal, the controller triggers the indicator light to flash and the buzzer to alarm.

9. The anesthesia needle insertion device for anesthesia according to claim 8, characterized in that: The invention also comprises a protective sleeve (12), which is sleeved on the outside of the needle tube (3), and the protective sleeve (12) and the needle tube (3) are detachably connected.

10. The anesthesia needle insertion device for anesthesia according to claim 9, characterized in that: The surface of the push plate (7) is provided with anti-slip grooves; and a sealing ring is provided at the connection between the connector (2) and the needle tube (3).

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