Ultrasonic-guided nerve block one-man operation mechanical decoupling integrated puncture and injection device

Abstract

The invention is suitable for the technical field of medical instruments, and provides an ultrasound-guided nerve block one-man operation mechanical decoupling integrated puncture and injection device which comprises an integrated control puncture handle, a sterile extension pipeline, a power execution host, a safety control interlocking module and a liquid medicine container with scales and a piston. The integrated control puncture handle is in fluid communication with a liquid medicine container with scales and a piston through a sterile extension pipeline, the liquid medicine container with the scales and the piston is detachably installed on the top of the power execution main machine, and the safety control interlocking module is internally arranged and fixed in the power execution main machine. The safety control interlocking module is in signal connection with the integrated control puncture handle and the power execution host respectively; according to the invention, the design of the independent control of the integrated control puncture handle is matched with multi-module linkage and single-hand holding, so that the whole-process operation can be completed, the personnel configuration limitation is thoroughly broken, the technical application coverage is greatly improved, and the device is adaptive to primary medical and emergency treatment fields.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to an ultrasound-guided nerve block single-operation mechanically decoupled integrated puncture and injection device. Background Technology

[0002] Currently, the two-person collaborative operation mode of ultrasound-guided nerve block is widely used in clinical practice. The main operator holds the ultrasound probe in one hand for real-time imaging and positioning, and holds the puncture needle in the other hand to insert the needle. After the puncture is in place, the needle tip is kept stable, and then the assistant operates the syringe to complete the negative pressure aspiration and drug injection.

[0003] The existing technology has the following problems:

[0004] The high reliance on staffing and the difficulty in implementing a two-person collaboration model in scenarios with scarce medical resources severely limit the coverage of technology applications and fail to meet the practical needs of primary healthcare and emergency departments.

[0005] The stability and safety of single-person operation are insufficient. Existing devices lack structural designs that can effectively counteract reaction forces, and safety controls are mostly based on single signal detection, which is prone to misjudgment due to signal failure, resulting in prominent safety hazards.

[0006] The system lacks adaptability to different scenarios and operational precision. The injection parameters, driving methods, and signal transmission modes are limited, which cannot meet the needs of different sites and populations. Furthermore, the accuracy of drug delivery is difficult to guarantee.

[0007] Therefore, an ultrasound-guided nerve block single-operation, mechanically decoupled integrated puncture and injection device is needed to solve the above problems. Summary of the Invention

[0008] The purpose of this invention is to provide an ultrasound-guided nerve block single-operation mechanically decoupled integrated puncture and injection device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] An ultrasound-guided nerve block single-operation mechanically decoupled integrated puncture and injection device includes an integrated control puncture handle, a sterile extension tubing, a power actuator, a safety control interlock module, and a drug container with graduations and a piston.

[0011] The integrated control puncture handle is in fluid communication with a graduated and piston-equipped drug container through a sterile extension tube. The graduated and piston-equipped drug container is detachably installed on the top of the power actuator. The safety control interlock module is built into and fixed inside the power actuator, and the safety control interlock module establishes signal connections with the integrated control puncture handle and the power actuator respectively.

[0012] Through the complete assembly architecture of five core components, the connection relationship and fixing method of each component are clearly defined, and an integrated system of "control-transmission-power-safety" is constructed. The safety control interlock module is built into and fixed inside the power actuator, shortening the signal transmission path and improving the stability and response speed of signal transmission. This structural design further strengthens the separate architecture of the control end and the power end, providing more reliable structural support for "mechanical decoupling". At the same time, the flexible design of the signal connection method adapts to the usage needs of different clinical scenarios, solving the problems of unstable signal transmission and poor scenario adaptability of existing devices.

[0013] A further technical solution is that the integrated control puncture handle includes a housing structure, a puncture needle fixing interface, a fluid interface, and an operation button;

[0014] The puncture needle fixing interface is coaxially disposed at the front end of the shell structure, the fluid interface is opened in the middle of the shell structure and communicates with the inside of the puncture needle fixing interface, the operation button consists of two independent controls, embedded on both sides of the grip area of ​​the shell structure, and the bottom of the operation button is electrically connected to the signal transmission module inside the shell structure.

[0015] The integrated control puncture handle's housing structure and component layout are more ergonomically designed. The coaxial setting of the puncture needle fixing interface ensures puncture accuracy, and the fluid interface's position design ensures smooth drug delivery. The operation button, as an independent control, is electrically connected to the internal signal transmission module of the housing, improving the sensitivity and reliability of command triggering. This structural design enables precise operation and rapid command response when held with one hand, avoiding needle tip displacement caused by operation delay. At the same time, the independent control design facilitates later maintenance and replacement, solving the problems of low integration and insufficient triggering sensitivity of existing operation buttons.

[0016] A further technical solution is that the sterile extension tubing is a transparent flexible tubing, one end of which is sealed to the fluid interface of the integrated control puncture handle through a Luer locking structure, and the other end is sealed to the output end of the drug solution container with scale and piston through a matching connector, and the length of the sterile extension tubing is 80-120cm.

[0017] The transparent and flexible design of the sterile extension tubing ensures both visual observation of blood return status and excellent flexibility, preventing tubing tangling or breakage during operation and improving operational flexibility. The Luer locking structure and the sealing connection of the matching connector further enhance the sealing of the fluid channel and eliminate the risk of drug leakage. The 80-120cm length design adapts to different clinical operation distances, meets the needs of different scenarios, and solves the problems of fixed length, poor flexibility, and insufficient sealing performance of existing tubing.

[0018] A further technical solution is that the power actuator includes a main housing, a control unit, a linear drive mechanism, a liquid medicine container mounting interface, and a mounting bracket;

[0019] The mounting bracket is fixed inside the main unit housing. The control unit and the linear drive mechanism are both fixed on the mounting bracket. The control unit and the linear drive mechanism are electrically connected. The liquid medicine container installation interface is opened on the top of the main unit housing. The power output end of the linear drive mechanism is coaxially corresponding to the liquid medicine container installation interface, and the distance between the two is 5-10cm.

[0020] The internal structure of the power actuator is more refined. The mounting bracket provides a stable mounting base for the control unit and the linear drive mechanism, ensuring the stability of the components during operation. The 5-10cm spacing between the linear drive mechanism and the liquid container mounting interface ensures both power transmission efficiency and provides ample space for the installation and removal of the graduated and piston-equipped liquid container. This structural design improves the overall structural rationality and ease of operation of the power actuator, ensuring accurate and stable power output and solving the problems of unreasonable internal layout and unstable component installation in existing power actuators.

[0021] A further technical solution is that the safety control interlocking module includes a module housing, a negative pressure signal detection unit, an action locking unit, and a redundant protection unit;

[0022] The negative pressure signal detection unit, the action locking unit, and the redundancy protection unit are all fixed inside the module housing and are electrically connected in sequence.

[0023] The negative pressure signal detection unit is connected to the operation button signal of the integrated control puncture handle, and the action locking unit is electrically connected to the linear drive mechanism of the power execution host;

[0024] The safety control interlocking module adds a redundant protection unit, which is electrically connected in sequence with the negative pressure signal detection unit and the action locking unit to construct a triple safety control logic of "signal detection - redundancy verification - action locking". The redundant protection unit performs secondary verification of the negative pressure signal to avoid misoperation caused by single-channel signal failure, significantly improving the reliability of safety control. This structural design further strengthens the standardization of the operation process from the hardware level, eliminates potential safety hazards, and solves the problems of low protection level and insufficient reliability of existing safety control modules.

[0025] A further technical solution is that the shell structure is an ergonomic curved surface structure, the outer surface of the grip area is provided with anti-slip protrusions, the center of gravity of the shell structure coincides with the axis of the puncture needle fixing interface, and the height of the operation button is flush with the central axis of the grip area of ​​the shell structure.

[0026] The ergonomic curved surface design and anti-slip bumps of the shell structure further enhance grip comfort and friction, reducing fatigue during prolonged operation. At the same time, the anti-slip bumps increase the contact area between the hand and the shell, preventing slippage caused by sweaty hands. The design of the center of gravity aligning with the axis of the puncture needle fixing interface, combined with the height setting of the operation buttons, ensures operational balance and convenient command triggering when holding the device with one hand, further improving the stability and accuracy of single-person operation and solving the problems of insufficient ergonomic design and poor grip stability of existing handles.

[0027] In a further technical solution, the linear drive mechanism includes a power output component and a transmission component; the power output component is fixed on the mounting bracket, one end of the transmission component is coaxially connected to the output shaft of the power output component, and the other end extends toward the mounting interface of the liquid medicine container, and the output end of the transmission component is adapted to the piston end of the liquid medicine container with graduations and a piston;

[0028] The separate design of the power output component and transmission component of the linear drive mechanism enables precise matching of power output and transmission. The transmission component transforms the rotational motion of the power output component into smooth linear motion, ensuring the uniformity and accuracy of drug delivery. This structural design improves the efficiency and stability of power transmission, adapts to different types of power output components, expands the applicability of the device, and solves the problems of unstable power transmission and poor adaptability of existing linear drive mechanisms.

[0029] In a further technical solution, the signal transmission method between the integrated control puncture handle and the safety control interlock module is either wired or wireless; in wired transmission, the wire passes through the built-in channel of the sterile extension tube wall; in wireless transmission, the integrated control puncture handle is equipped with a wireless transmitting module, and the safety control interlock module is equipped with a wireless receiving module.

[0030] The dual-mode design of wired and wireless transmission adapts to the needs of different clinical scenarios. In wired transmission, the wire passes through the built-in channel in the wall of the sterile extension tube, avoiding the problems of tangling or contamination caused by exposed wires. In wireless transmission, a signal connection is established between the wireless transmitting module and the receiving module, eliminating the constraints of cables and improving operational flexibility. This structural design solves the problems of the existing device's single signal transmission method and insufficient operational flexibility. At the same time, the design of two transmission methods ensures the reliability and security of signal transmission.

[0031] A complete technical solution is constructed, integrating "mechanical decoupling, multiple safety protections, and multi-scenario adaptation." The ergonomically optimized design of the integrated puncture handle and the independent control design of the operation buttons enable precise control and convenient command triggering during single-person operation. The transparent, flexible, and sealed connection design of the sterile extension tubing balances blood return observation, operational flexibility, and sterile protection. The refined internal layout of the power actuator and the separate design of the linear drive mechanism ensure precise and stable power output. The triple safety control logic of the safety control interlock module maximizes operational safety from a hardware perspective. A dual-mode signal transmission design enhances the device's performance. Scene adaptability: The collaborative operation of all components achieves efficient separation between the control and power ends. The injection reaction force is independently borne by the power actuator, resulting in smoother power transmission, more reliable signal transmission, and more comprehensive safety protection. Overall, it achieves the core effects of precise single-person operation, more accurate puncture positioning, more stable injection process, more standardized operation procedures, and wider scene adaptability. This not only solves the core pain points of existing technologies, such as high reliance on personnel and insufficient stability and safety of single-person operation, but also further improves the ease of operation, reliability, and applicability of the device, providing a superior technical solution for ultrasound-guided nerve block procedures.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] This invention integrates an independent control design for the puncture handle, which, in conjunction with multi-module linkage, allows for the completion of the entire process with a single hand, completely breaking down personnel configuration limitations, significantly expanding the application coverage of the technology, and making it suitable for primary healthcare and emergency settings.

[0034] This invention deepens the mechanical decoupling architecture and triple safety protection mechanism. By using heavy-duty mounting brackets and shock-absorbing structures to isolate reaction forces, combined with the logic of "signal detection-redundancy verification-action locking", it not only solves the stability problem of single-person operation, but also eliminates the risk of safety misjudgment, significantly improving operational safety.

[0035] This invention has multi-dimensional scenario adaptability, supports multiple drive types, signal transmission modes and injection parameter adjustments, and, together with precise control algorithms and ergonomic optimization design, not only meets the needs of different clinical scenarios, but also ensures the accuracy of drug delivery and ease of operation.

[0036] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0038] Figure 2 This is a side-view three-dimensional structural schematic diagram of the present invention;

[0039] Figure 3 This is a block diagram of the entire invention.

[0040] In the diagram: 1. Integrated control puncture handle; 11. Housing structure; 12. Puncture needle fixing interface; 13. Fluid interface; 14. Operation button; 2. Sterile extension tubing; 3. Power actuator; 30. Main unit housing; 31. Control unit; 32. Linear drive mechanism; 321. Power output component; 322. Transmission component; 33. Drug container mounting interface; 34. Mounting bracket; 4. Safety control interlock module; 40. Module housing; 41. Negative pressure signal detection unit; 42. Action locking unit; 43. Redundancy protection unit; 5. Drug container with graduations and piston. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0043] Example 1

[0044] like Figure 1-3 As shown, this embodiment of the invention provides an ultrasound-guided nerve block single-person operation mechanically decoupled integrated puncture and injection device, including an integrated control puncture handle 1, a sterile extension tubing 2, a power actuator 3, a safety control interlock module 4, and a drug container 5 with graduations and a piston.

[0045] In this embodiment, the integrated control puncture handle 1 is in fluid communication with the graduated and piston-equipped drug container 5 via a sterile extension tube 2. The sterile extension tube 2 is a transparent flexible tube with a length of 100cm. One end of the tube is sealed to the fluid interface 13 of the integrated control puncture handle 1 via a Luer locking structure, and the other end is sealed to the output end of the graduated and piston-equipped drug container 5 via a matching connector. The graduated and piston-equipped drug container 5 is detachably installed on the top of the power actuator 3. The safety control interlock module 4 is built into and fixed inside the power actuator 3, and establishes signal connections with the integrated control puncture handle 1 and the power actuator 3 respectively.

[0046] The integrated control puncture handle 1 includes a housing structure 11, a puncture needle fixing interface 12, a fluid interface 13, and an operation button 14. The puncture needle fixing interface 12 is coaxially disposed at the front end of the housing structure 11. The fluid interface 13 is located in the middle of the housing structure 11 and communicates with the inside of the puncture needle fixing interface 12. The operation button 14 consists of two independent controls embedded on both sides of the grip area of ​​the housing structure 11. The bottom of the operation button 14 is electrically connected to the signal transmission module inside the housing structure 11.

[0047] Example 2

[0048] The difference between this embodiment and embodiment 1 is that the internal structure of the power actuator 3 and the composition of the safety control interlock module 4 are refined, and the design details of the housing structure 11 of the integrated control puncture handle 1 are clarified.

[0049] In this embodiment, the power actuator 3 includes a main housing 30, a control unit 31, a linear drive mechanism 32, a liquid medicine container mounting interface 33, and a mounting bracket 34. The mounting bracket 34 is fixed inside the main housing 30. The control unit 31 and the linear drive mechanism 32 are both fixed on the mounting bracket 34. The control unit 31 and the linear drive mechanism 32 are electrically connected. The liquid medicine container mounting interface 33 is opened on the top of the main housing 30, and the power output end of the linear drive mechanism 32 is coaxially corresponding to the liquid medicine container mounting interface 33, with a distance of 8cm between them.

[0050] The linear drive mechanism 32 includes a power output component (321) and a transmission component (322). The power output component (321) is fixed on the mounting bracket 34. One end of the transmission component (322) is coaxially connected to the output shaft of the power output component (321), and the other end extends toward the liquid medicine container mounting interface 33. The output end of the transmission component (322) is adapted to the piston end of the liquid medicine container 5 with scale and piston.

[0051] The safety control interlock module 4 includes a module housing 40, a negative pressure signal detection unit 41, an action locking unit 42, and a redundancy protection unit 43. All three are fixed inside the module housing 40 and are electrically connected in sequence. The negative pressure signal detection unit 41 is signal-connected to the operation button 14 of the integrated control puncture handle 1, and the action locking unit 42 is electrically connected to the linear drive mechanism 32 of the power execution host 3.

[0052] The shell structure 11 has an ergonomic curved surface structure, and the outer surface of the grip area is provided with anti-slip protrusions. The center of gravity of the shell structure 11 coincides with the axis of the puncture needle fixing interface 12, and the height of the operation button 14 is flush with the central axis of the grip area of ​​the shell structure 11.

[0053] Example 3

[0054] The difference between this embodiment and embodiment 2 is that it defines the signal transmission method between the integrated control puncture handle 1 and the safety control interlock module 4, including specific structures for wired and wireless transmission.

[0055] In this embodiment, when the signal transmission is wired, the wire passes through the built-in channel of the sterile extension tube 2 to realize the signal connection between the integrated control puncture handle 1 and the safety control interlock module 4; when the wireless transmission is used, the integrated control puncture handle 1 is equipped with a wireless transmitting module, and the safety control interlock module 4 is equipped with a wireless receiving module. The two establish a signal connection through a wireless communication protocol.

[0056] The structure and connection relationship of the remaining components are consistent with those in Embodiment 2, ensuring the continuity and stability of the overall function of the device.

[0057] Working principle and usage process of this invention:

[0058] Working principle:

[0059] Through a complex linkage of "multi-module collaboration, precise control, and redundancy protection," higher precision and more reliable functions are achieved. The specific principle is as follows:

[0060] Fluid pathway optimization principle: The aseptic extension tubing 2 is made of medical-grade flexible transparent material with an internal reinforcing fiber layer, balancing flexibility and pressure resistance to prevent collapse under negative pressure; the Luer locking structure at both ends uses a double seal of "threaded engagement + sealing ring" to ensure reliable sealing during repeated installations; the inner wall of the tubing is hydrophobic to reduce drug residue and ensure accurate dosage; the 80-120cm length design adapts to different clinical operation distances, avoiding the limitation of operation due to excessively short tubing or the retention of drug due to excessively long tubing;

[0061] Deep-seated principles of signal transmission: Supports both wired and wireless dual-mode transmission. In wired transmission, the wire passes through the built-in channel in the pipe wall and is wrapped with a shielding layer to resist electromagnetic interference, with a signal delay of ≤100ms. In wireless transmission, the Bluetooth 5.0 protocol, which complies with the EMC standards of medical devices, is used. Frequency hopping technology is used to resist interference in the clinical environment. The signal is transmitted with encrypted encoding to prevent accidental triggering or tampering and to adapt to different operating scenarios.

[0062] The principle of precise control of power execution: The linear drive mechanism 32 is divided into a power output component (321) and a transmission component (322). The power output component can be driven by a motor, pneumatic or energy storage. The transmission component adopts a planetary gear reduction mechanism to convert high-speed rotational motion into low-speed and stable linear motion. The transmission efficiency is ≥95% and the pushing accuracy is 0.1mm. The control unit 31 has a built-in PID adjustment algorithm, which can automatically adjust the driving force and pushing rate according to the viscosity of the drug solution and tissue resistance to avoid speed fluctuations.

[0063] Deep principle of safety interlock: The safety control interlock module 4 adds a redundant protection unit 43, forming a triple mechanism of "signal detection - redundancy verification - action locking" - the negative pressure signal detection unit 41 captures the back pumping electrical signal, and the redundant protection unit 43 simultaneously collects the pipeline pressure sensor data. The effective negative pressure is confirmed by dual parameter verification of "electrical signal + pressure value", avoiding misjudgment due to single signal failure; the action locking unit 42 adopts an electromagnetic locking structure, which mechanically blocks the injection power, which is more reliable than simple circuit locking, and has a built-in fault alarm mechanism. In case of abnormality, it immediately triggers an audible and visual alarm and cuts off the power.

[0064] Mechanical decoupling principle: The power actuator 3 is divided into a power chamber (307) and a control chamber (308) by a partition plate (306). The linear drive mechanism 32 is installed in the power chamber by a heavy-duty mounting bracket 34. The bracket and the main body housing 30 are fixed by welding and bolts. The bottom is equipped with a shock-absorbing pad to absorb the impact of the reaction force. The center of gravity of the housing structure 11 of the integrated control puncture handle 1 is coincident with the axis of the puncture needle. The connection between the handle and the pipeline adopts a flexible buffer structure to isolate minor vibrations and achieve "absolute stability" mechanical decoupling.

[0065] Usage process:

[0066] System assembly and initialization:

[0067] Mechanical assembly: After the medicine container 5 with graduations and a piston is filled with medicine, it is fixed by the elastic clamping structure of the medicine container installation interface 33. The annular sealing groove (3041) on the inner side of the interface fits tightly with the elastic sealing gasket (3042) to ensure a leak-free seal; one end of the sterile extension tubing 2 is screwed into the fluid interface 13 of the integrated control puncture handle 1 through a Luer locking structure, and the other end is connected to the medicine container 5; the puncture needle is inserted into the puncture needle fixing interface 12, and the threaded lock ensures a firm installation;

[0068] Electrical and signal initialization: Select wired or wireless transmission mode—in wired mode, the wire passes through the built-in channel of the pipe to connect the handle and the safety control interlock module 4; in wireless mode, start Bluetooth pairing and complete the encrypted connection; start the power actuator 3, and the safety control interlock module 4 automatically performs self-test: detects the connectivity of each unit circuit, calibrates the zero point of the pressure sensor, initializes the PID adjustment parameters of the control unit 31, and completes system readiness;

[0069] Pipeline venting and pressure calibration:

[0070] Exhaust operation: Press the exhaust shortcut button on the integrated control puncture handle 1 (or start the exhaust mode through the main unit panel), the control unit 31 drives the linear drive mechanism 32 to move forward at low speed, pushing the medicine to fill the fluid channel; the pressure sensor monitors the pipeline pressure in real time, and when the pressure reaches the preset threshold (confirming that the air has been exhausted), the drive mechanism automatically stops to avoid wasting medicine;

[0071] Pressure calibration: The system automatically performs negative pressure suction calibration. The linear drive mechanism 32 moves in the opposite direction to the preset stroke to form a standard negative pressure. The pressure sensor records the detection value as the subsequent "effective negative pressure" judgment benchmark to ensure detection accuracy under different environments.

[0072] Ultrasound-guided puncture localization:

[0073] The operator holds the ultrasound probe in one hand and the integrated control puncture handle 1 in the other. The ergonomic curved structure fits the palm, and the anti-slip bumps increase grip friction. The center of gravity is aligned with the axis of the puncture needle to reduce operating torque. With the help of real-time ultrasound imaging, the operator slowly adjusts the needle insertion angle and depth to bring the needle tip to the vicinity of the target nerve while maintaining a stable grip.

[0074] Negative pressure retraction and dual verification:

[0075] Negative pressure trigger: Press the negative pressure operation button 14 of the integrated control puncture handle 1. The command signal is transmitted to the signal receiving unit of the safety control interlock module 4 after encryption. After parsing, it is sent to the negative pressure signal detection unit 41.

[0076] Power execution and signal acquisition: The control unit 31 drives the power output component (321) of the linear drive mechanism 32 to operate, and after deceleration by the transmission component (322), it pulls the piston of the liquid container 5 to form a negative pressure and maintain it for a preset time (to ensure sufficient backflow); during this period, the negative pressure signal detection unit 41 collects the button trigger electrical signal, and the redundancy protection unit 43 synchronously collects the pressure sensor data;

[0077] Validity judgment: The redundant protection unit 43 compares the pressure data with the calibration reference value. If the pressure reaches the negative pressure threshold and the duration meets the requirements, it is determined to be "effective negative pressure" and sends an unlocking signal to the action locking unit 42. If the pressure does not meet the standard or the signal is abnormal, an alarm is triggered and unlocking is prohibited, prompting a re-pullback.

[0078] Precision drug injection:

[0079] Parameter confirmation: The operator confirms the injection dose and push rate through the shortcut key of the integrated control puncture handle 1 or the main panel (the system defaults to commonly used scenario parameters, which can be manually modified). The control unit 31 adjusts the PID adjustment coefficient according to the set parameters.

[0080] Injection execution: Press the injection operation button 14, the action locking unit 42 is unlocked, the control unit 31 drives the linear drive mechanism 32 to move forward, the transmission component (322) smoothly pushes the piston, and the drug solution is injected into the target tissue at a uniform speed through the sterile extension tube 2; During the injection process, the control unit monitors the tube pressure and drive mechanism load in real time, and automatically adjusts the pushing speed when encountering sudden changes in tissue resistance to avoid needle tip displacement;

[0081] Mechanical decoupling guarantee: The reaction force generated by the drive mechanism is transmitted to the main housing 30 through the mounting bracket 34. The shock absorption pad absorbs the impact, the partition plate isolates the vibration, and the reaction force is not transmitted to the handle; the flexible connection structure between the handle and the pipeline buffers fluid fluctuations, ensuring that the operator only needs to resist the slight resistance of the liquid to maintain the absolute stability of the needle tip;

[0082] Operation completion and system reset:

[0083] Injection termination: After the injection dose reaches the set value, the control unit 31 commands the drive mechanism to stop moving, and the action locking unit 42 relocks to prevent accidental triggering;

[0084] System Reset: Safety control interlock module 4 resets all detection parameters and lock status, control unit 31 drives linear drive mechanism 32 to reset to the initial position; the operator smoothly withdraws the puncture needle, disassembles the sterile extension tubing 2 and drug container 5, turns off the main power, and completes the operation.

[0085] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve any improvement to the software and methods.

[0086] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ultrasound-guided nerve block single-hand operation mechanically decoupled integrated puncture injection device, characterized in that: It comprises an integrated control puncture handle (1), a sterile extension pipeline (2), a power execution host (3), a safety control interlock module (4) and a drug liquid container (5) with scale and piston; The integrated control puncture handle (1) is in fluid communication with the drug liquid container (5) with scale and piston through the sterile extension pipeline (2), the drug liquid container (5) with scale and piston is detachably installed on the top of the power execution host (3), the safety control interlock module (4) is built-in and fixed in the inside of the power execution host (3), and the safety control interlock module (4) is respectively connected with the integrated control puncture handle (1) and the power execution host (3).

2. The ultrasound-guided nerve block single-hand operation mechanically decoupled integrated puncture injection device according to claim 1, characterized in that: The integrated control puncture handle (1) comprises a shell structure (11), a puncture needle fixing interface (12), a fluid interface (13) and an operation button (14); The puncture needle fixing interface (12) is coaxially arranged at the front end of the shell structure (11), the fluid interface (13) is arranged in the middle of the shell structure (11) and is in communication with the inside of the puncture needle fixing interface (12), the operation button (14) is two independent controls and is embedded on both sides of the holding area of the shell structure (11), and the bottom of the operation button (14) is electrically connected with the signal transmission module in the inside of the shell structure (11).

3. The ultrasound-guided nerve block single-hand operation mechanically decoupled integrated puncture injection device according to claim 1, characterized in that: The sterile extension pipeline (2) is a transparent flexible pipeline, one end of which is sealedly connected with the fluid interface (13) of the integrated control puncture handle (1) through a luer lock structure, the other end is sealedly connected with the output end of the drug liquid container (5) with scale and piston through a matching connector, and the length of the sterile extension pipeline (2) is 80-120 cm.

4. The ultrasound-guided nerve block single-hand operation mechanically decoupled integrated puncture injection device according to claim 1, characterized in that: The power execution host (3) comprises a host shell (30), a control unit (31), a linear driving mechanism (32), a drug liquid container installation interface (33) and an installation support (34); The installation support (34) is fixed in the inside of the host shell (30), the control unit (31) and the linear driving mechanism (32) are both fixed on the installation support (34), the control unit (31) is electrically connected with the linear driving mechanism (32), the drug liquid container installation interface (33) is arranged on the top of the host shell (30), and the power output end of the linear driving mechanism (32) is coaxially corresponding to the drug liquid container installation interface (33), and the distance between them is 5-10 cm.

5. The ultrasound-guided nerve block single-hand operation mechanically decoupled integrated puncture injection device according to claim 1, characterized in that: The safety control interlock module (4) comprises a module shell (40), a negative pressure signal detection unit (41), an action locking unit (42) and a redundancy protection unit (43); The negative pressure signal detection unit (41), the action locking unit (42) and the redundancy protection unit (43) are all fixed in the inside of the module shell (40) and are sequentially electrically connected; The negative pressure signal detection unit (41) is signal connected with the operation button (14) of the integrated control puncture handle (1), and the action locking unit (42) is electrically connected with the linear driving mechanism (32) of the power execution host (3).

6. The ultrasound-guided nerve block single-handling mechanically decoupled integrated puncture-injection device of claim 2, wherein: The shell structure (11) is an ergonomic curved surface structure, the outer surface of the holding area is provided with anti-skid convex points, the center of gravity of the shell structure (11) coincides with the axis of the puncture needle fixing interface (12), and the height of the operation button (14) is flush with the central axis of the holding area of the shell structure (11).

7. The ultrasound-guided nerve block single-hand operation mechanically decoupled integrated puncture injection device according to claim 4, characterized in that: The linear drive mechanism (32) comprises a power output assembly (321) and a transmission assembly (322); The power output assembly (321) is fixed on the mounting bracket (34), one end of the transmission assembly (322) is coaxially connected with the output shaft of the power output assembly (321), the other end extends towards the liquid medicine container mounting interface (33), and the output end of the transmission assembly (322) is adapted to the piston end of the liquid medicine container (5) with a scale and a piston.

8. The ultrasound-guided nerve block single-hand operation mechanically decoupled integrated puncture injection device according to claim 1, characterized in that: The signal transmission mode between the integrated control puncture handle (1) and the safety control interlocking module (4) is wired transmission or wireless transmission; when the wired transmission is used, the wire passes through the built-in channel in the wall of the sterile extension pipeline (2); when the wireless transmission is used, the integrated control puncture handle (1) is internally provided with a wireless transmission module, and the safety control interlocking module (4) is internally provided with a wireless receiving module.

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