An integrated bioelectrical impedance recognition function electrocoagulation device

Abstract

This invention discloses an electrocoagulation device integrating bioelectrical impedance identification function, including a left clamp handle, a right clamp handle, and a left and right clamp head controlled by the opening and closing of the left and right clamp handles, respectively. The front ends of the left and right clamp heads are provided with interlocking teeth. The left clamp head is provided with a nested multifunctional electrode, including a first outer electrode, an insulating ceramic tube disposed inside the first outer electrode, and an inner core electrode disposed inside the insulating ceramic tube. The first outer electrode and the inner core electrode constitute a pair of opposing electrodes for impedance detection and nerve stimulation. The right clamp head is provided with a second outer electrode, and the first and second outer electrodes constitute a pair of opposing electrodes for high-frequency electrocoagulation. This invention enables the coordinated operation of high-frequency electrocoagulation and bioelectrical impedance detection functions on the same instrument, and allows for safe switching between different operating modes through a switchable electrical connection structure.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an electrocoagulation device integrating bioelectrical impedance identification function. Background Technology

[0002] In the current field of neurosurgery, bipolar electrocoagulation serves as a core hemostatic tool, primarily using high-frequency current to coagulate tissue proteins to achieve hemostasis. With the development of minimally invasive and precision surgery, surgical instruments are evolving towards intelligent, multifunctional integration. The market demand for integrated tools capable of delivering energy output and providing tissue characteristic feedback through a single operating interface is growing. Current technological trends aim to enhance the sensing capabilities of surgical instruments through physical sensing methods, thereby improving the accuracy and safety of surgical procedures.

[0003] However, existing bipolar electrocoagulation devices have significant technical limitations in practical applications. First, traditional bipolar electrocoagulation devices are too limited in function, only possessing high-frequency electrocoagulation hemostasis capabilities, and their hardware structure lacks a mechanism for real-time feedback on the physical characteristics of the contacting tissue. When performing complex tissue resections, the inability of the device to provide physical characteristic parameters of the tissue boundary results in a lack of objective auxiliary reference information during the procedure, leading to objective risks of over-ablation or insufficient treatment at the technical level.

[0004] On the other hand, although bioelectrical impedance analysis (BIA) and electrophysiological neurostimulation (EMS) technologies have been proven in clinical studies to distinguish different types of tissues or identify neural structures through their electrical properties, these technologies currently exist primarily as standalone devices. Existing solutions suffer from structural integration deficiencies; the impedance measurement electrodes and electrocoagulation electrodes are spatially separated, requiring frequent instrument changes when performing different functional operations at the same surgical site. This not only increases the complexity of the surgical procedure but also causes interruptions in the surgical process. Furthermore, due to the significant physical differences in circuit logic and electromagnetic compatibility between the high-voltage environment of high-frequency electrocoagulation and the microcurrent environment required for bioelectrical impedance / neurostimulation, existing bipolar electrocoagulation structures struggle to achieve precise acquisition and output of weak electrical signals while maintaining hemostatic efficacy. An integrated structure capable of safely switching and physically isolating high and low voltage signals is lacking.

[0005] In summary, existing technologies have objective shortcomings in terms of structural integration, functional diversity, and signal transmission compatibility. Therefore, developing an intelligent bipolar electrocoagulation device that can organically integrate an electrocoagulation structure, a bioelectrical impedance measurement module, and a neurostimulation module, and can safely switch between modes, has become an important technological direction for improving the precision of medical devices. Summary of the Invention

[0006] The purpose of this invention is to provide an electrocoagulation device that integrates bioelectrical impedance identification function to solve at least one of the above-mentioned technical problems. It can achieve the coordinated operation of high-frequency electrocoagulation and bioelectrical impedance detection functions on the same instrument, and realize safe switching between different working modes through a switchable electrical connection structure. While ensuring the stability of electrocoagulation operation, it improves the functional integration and ease of use of the device.

[0007] The embodiments of the present invention are implemented as follows:

[0008] An electrocoagulation device integrating bioelectrical impedance identification function includes a left clamp handle, a right clamp handle, and a left clamp head and a right clamp head respectively controlled by the opening and closing of the left clamp handle and the right clamp handle. The front end of the left clamp head and the front end of the right clamp head are provided with interlocking teeth.

[0009] The left clamp head is equipped with a nested multifunctional electrode, including a first outer electrode, an insulating ceramic tube disposed inside the first outer electrode, and an inner core electrode disposed inside the insulating ceramic tube. The first outer electrode and the inner core electrode constitute a pair of opposing electrodes for impedance detection and nerve stimulation.

[0010] The right clamp head is provided with a second external electrode, and the first external electrode and the second external electrode constitute a pair of opposite electrodes for high-frequency electrocoagulation.

[0011] A mode switching module is provided at the connection between the left clamp and the right clamp, including a switching switch and a control board. The switching switch is used to switch the current path between high-frequency electrocoagulation mode, impedance detection mode or nerve stimulation mode.

[0012] The left clamp is equipped with an impedance identification module and a neural stimulation module. The impedance identification module generates an excitation signal and a reference signal, demodulates the returned response signal, and obtains impedance component data characterizing the target characteristics. The neural stimulation module outputs a stimulation signal with adjustable parameters and identifies and monitors the target physiological structure based on the feedback signal.

[0013] In a preferred embodiment of the present invention, the above-mentioned electrocoagulation device integrating bioelectrical impedance identification function has the insulating ceramic tube embedded in the cavity formed by the first external electrode.

[0014] The inner core electrode is coaxially disposed inside the insulating ceramic tube and is made of enameled wire. The exposed end of the enameled wire is coplanar with the clamping surface of the first outer electrode.

[0015] The left clamp handle, the left clamp head, the right clamp head, and the right clamp handle are connected by an insulating rod body.

[0016] The outer surface of the insulating rod is covered with an insulating layer, which is made of a high-temperature resistant polymer material.

[0017] Its technical advantages are as follows: through spatial coaxial nesting and coplanar design of electrodes, the precise integration of detection functions is achieved while ensuring the slenderness of the clamp head, ensuring the sensitivity of signal acquisition and contact stability; by using high-performance insulating materials and multi-layer physical barriers, the range of current action is accurately located, eliminating the hidden dangers of high voltage breakdown and heat conduction burns.

[0018] In a preferred embodiment of the present invention, the electrocoagulation device with integrated bioelectrical impedance identification function described above is provided with a reset spring at the connection between the left and right clamp handles.

[0019] One end of the reset spring is connected to one of the left and right clamp handles, which serves as the movable handle. When the clamping force is released, it drives the left and right clamp heads to open automatically.

[0020] Its technical advantages are as follows: by utilizing the mechanical elastic power provided by the return spring, the forceps head can be automatically opened and immediately reset in the non-working state, reducing the operator's manual opening action during repeated clamping and multi-point probing. While significantly reducing hand fatigue, it improves the smoothness and response speed of instrument operation in complex anatomical environments for function switching and continuous operation.

[0021] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function described above, wherein the mode switching module controls the current path to switch between high-frequency electrocoagulation mode, impedance detection mode and nerve stimulation mode.

[0022] In the high-frequency electrocoagulation mode, the first external electrode and the second external electrode are connected to the high-frequency host by default via the host connection cable.

[0023] In the impedance detection mode, the control board disconnects the host connection cable from the first external electrode and the second external electrode, connects the first external electrode to the first acquisition signal line, and connects the inner core electrode to the second acquisition signal line, so that the first external electrode serves as the common terminal electrode and the inner core electrode serves as the impedance detection terminal electrode. The first acquisition signal line and the second acquisition signal line are connected to the impedance display.

[0024] In the neural stimulation mode, the control board disconnects the host connection cable and connects the first external electrode and the inner core electrode to the signal output path of the neural stimulation module, so that the first external electrode serves as a common terminal electrode and the inner core electrode serves as a stimulation output terminal electrode, and outputs the parameter-adjustable stimulation signal through the relative electrode pair.

[0025] Its technical advantages are as follows: by reconstructing the logic and physically isolating the current path through the control board, a single instrument can safely switch between high-voltage energy output and low-voltage precision sensing or stimulation. While ensuring that high-frequency and high-voltage signals do not cause electromagnetic interference or physical damage to the sensitive acquisition circuit, the loop design of the common end-detector end can accurately locate the detection and stimulation functions to the local area of ​​the single-sided clamp head, which improves the convenience of function switching and the spatial resolution of local tissue identification during use.

[0026] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function further includes a redundant monitoring module, the redundant monitoring module comprising:

[0027] A Hall sensor is installed on the electrode circuit corresponding to the high-frequency electrocoagulation mode to sense changes in current and detect whether a high-frequency high-voltage signal is output.

[0028] The prompt logic unit is electrically connected to the Hall sensor and the control board. When it is in impedance detection mode and the Hall sensor detects the high-frequency high-voltage signal, it generates a status prompt signal.

[0029] Its technical advantages are as follows: it utilizes a non-contact Hall current sensing mechanism to monitor the status of high-frequency circuits in real time, providing logical redundancy protection at the physical level. This ensures that when performing micro-current impedance monitoring or nerve stimulation, it can immediately identify and warn of externally inserted high-voltage electrocoagulation signals, thereby effectively preventing high-energy electrical impacts on the precision acquisition circuit.

[0030] In a preferred embodiment of the present invention, the electrocoagulation device with integrated bioelectrical impedance identification function has an impedance display disposed on the left or right clamp handle for displaying the impedance component data in real time and displaying a switching reminder between the current mode and the waiting mode in response to the status prompt signal.

[0031] Its technical effect is that by providing in-situ digital visual feedback and pattern warning prompts at the instrument handle, it enables the real-time presentation of tissue physical characteristics and equipment safety status, allowing users to accurately grasp the current working conditions while maintaining the surgical operation field of vision.

[0032] In a preferred embodiment of the present invention, the impedance identification module of the electrocoagulation device integrating bioelectrical impedance identification function includes:

[0033] A signal generator is used to generate multi-frequency excitation signals and two reference signals with a 90° phase difference.

[0034] The demodulation circuit includes interconnected voltage-to-current conversion circuits, mixers, low-pass filters, and analog-to-digital converters.

[0035] The mixer is used to mix the reference signal with the response signal returned by the inner core electrode, and after processing by the low-pass filter and analog-to-digital converter, the real part and imaginary part of the impedance data are obtained.

[0036] Its technical advantages are as follows: through the orthogonal demodulation architecture, it achieves high-precision vector decoupling of weak response signals, effectively filtering out electromagnetic noise in the surgical environment while accurately acquiring the real and imaginary parts of tissue impedance data.

[0037] In a preferred embodiment of the present invention, the electrocoagulation device with integrated bioelectrical impedance identification function described above further includes a high-frequency isolation circuit in the mode switching module.

[0038] The high-frequency isolation circuit is installed in the signal path of the impedance identification module and the nerve stimulation module.

[0039] The high-frequency isolation circuit, in conjunction with the relays or solid-state switches on the control board, is used to completely physically disconnect the high-frequency electrocoagulation circuit under impedance detection or nerve stimulation conditions, thereby filtering out residual high-frequency interference signals.

[0040] Its technical effect is that, through a dual protection mechanism of physical disconnection and frequency filtering, it blocks the risk of electrical damage to the precision monitoring circuit by high-frequency energy, while filtering out background noise.

[0041] In a preferred embodiment of the present invention, the neurostimulation module of the electrocoagulation device integrating bioelectrical impedance recognition function includes:

[0042] The pulse generation circuit outputs micro-current pulse signals with adjustable frequency and amplitude.

[0043] The monitoring unit monitors the impedance change or evoked potential signal between the relative electrode pairs used for nerve stimulation in real time when the pulse generation circuit outputs a signal, in order to identify neural structures.

[0044] Its technical effect lies in the fact that, through the coordinated closed loop of adjustable pulse output and real-time electrical signal monitoring, dynamic identification and precise localization of neural structures are achieved.

[0045] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function further includes:

[0046] The calibration circuit, built into the impedance identification module, compensates and calibrates the original signal returned by the inner core electrode.

[0047] An audio-visual signal indicator is mounted on the left clamp handle and electrically connected to the control board. It issues differentiated reminder signals based on the processed impedance component data.

[0048] The control board has a self-test protection mechanism that monitors the connection status of each module in real time during mode switching.

[0049] Its technical advantages are: through the deep integration of real-time signal compensation, multi-dimensional perception feedback and closed-loop self-test monitoring, it improves the measurement accuracy and operational stability under complex working conditions, and provides intuitive, accurate and highly safe operation assurance.

[0050] The beneficial effects of the embodiments of the present invention are:

[0051] By organically integrating a bioelectrical impedance measurement module and nerve stimulation function into the physical structure of a unilateral arm of bipolar electrocoagulation, this invention overcomes the technical deficiency of existing electrocoagulation tools having only one function. It increases the sensing dimension of the instrument, enabling it not only to perform ablation and hemostasis under energy output but also to provide real-time feedback on the physical properties of the tissue at the contact site without changing the instrument's position. Through structural simplification and multifunctional integration, the problem of process interruption caused by frequent changes of functional instruments in a precision surgical space is solved, simplifying the operation process, reducing the operator's workload, and improving overall operational efficiency.

[0052] By incorporating a built-in power switching and isolation module, this invention achieves effective physical isolation between the high-frequency energy output circuit and the weak signal acquisition circuit, solving the problem of interference and loss of precision electronic components caused by high-frequency high-voltage electrical signals, and ensuring the speed and safety of switching between different operating modes. Through integrated high-voltage monitoring redundancy design and self-test protection mechanism, the stability of system operation is improved, and the risk of misoperation is reduced. By providing real-time impedance characteristic data and adjustable stimulus feedback signals, the traditional operation process relying on subjective experience is transformed into a precise guidance process based on objective physical index feedback, enhancing the accuracy of identifying important tissue structures. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of the electrocoagulation device integrating bioelectrical impedance identification function according to the present invention.

[0055] Figure 2 This is a schematic diagram of the clamping head of the electrocoagulation device integrating bioelectrical impedance identification function of the present invention when it is open;

[0056] Figure 3This is an enlarged schematic diagram of the electrode head structure of the electrocoagulation device integrating bioelectrical impedance identification function of the present invention;

[0057] Figure 4 This is a schematic diagram of the electrode functional structure of the electrocoagulation device integrating bioelectrical impedance identification function of the present invention.

[0058] In the diagram: 1-Left clamp handle; 2-Right clamp handle; 3-Left clamp head; 4-Right clamp head; 5-Switch; 6-Insulating ceramic tube; 7-Inner core electrode; 8-First outer electrode; 9-Second outer electrode. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0060] Please refer to Figures 1 to 4 This invention provides an electrocoagulation device integrating bioelectrical impedance identification function, comprising a left clamp handle 1, a right clamp handle 2, and a left clamp head 3 and a right clamp head 4 respectively controlled by the opening and closing of the left clamp handle 1 and the right clamp handle 2. The left clamp handle 1 and the right clamp handle 2 are movably connected by a central hinge shaft. Operating rings for the operator's fingers to pinch are respectively provided at the ends of the left clamp handle 1 and the right clamp handle 2. The front ends of the left clamp head 3 and the right clamp head 4 are provided with interlocking teeth, which adopt an anti-slip serrated design to ensure firm clamping of blood vessels or target tissues. The left clamp head 3 is provided with a nested multifunctional electrode, including a first external electrode 8, an insulating ceramic tube 6 disposed inside the first external electrode 8, and an inner core electrode 7 disposed inside the insulating ceramic tube 6. An external electrode 8 and the inner core electrode 7 constitute a pair of opposing electrodes for impedance detection and nerve stimulation; the right clamp head 4 is provided with a second external electrode 9, and the first external electrode 8 and the second external electrode 9 constitute a pair of opposing electrodes for high-frequency electrocoagulation; a mode switching module is provided at the connection between the left clamp handle 1 and the right clamp handle 2, including a switching switch 5 and a control board, the switching switch 5 being used to switch the current path between high-frequency electrocoagulation mode, impedance detection mode, or nerve stimulation mode; the left clamp handle 1 is provided with an impedance recognition module and a nerve stimulation module, the impedance recognition module generating an excitation signal and a reference signal, demodulating the returned response signal to obtain impedance component data characterizing the target characteristics, and the nerve stimulation module outputting a stimulation signal with adjustable parameters, and identifying and monitoring the target physiological structure based on the feedback signal.

[0061] The left clamp handle 1 and the right clamp handle 2 are connected to the corresponding clamp heads by a high-strength insulating rod. The insulating rod has a through-wire channel inside for arranging the wires connecting the electrodes. The outer surface of the insulating rod is covered with an insulating layer. The insulating layer is made of high-temperature resistant polymer materials such as polyether ether ketone (PEEK) or polytetrafluoroethylene (PTFE) to isolate the conduction of high-frequency current to non-target tissues and prevent accidental thermal damage.

[0062] The control board is a miniature PCB or a flexible circuit board (FPC) and is compactly arranged in a sealed cavity inside the left clamp handle 1.

[0063] In a preferred embodiment of the present invention, in the electrocoagulation device integrating bioelectrical impedance identification function, the insulating ceramic tube 6 is embedded in the cavity formed by the first external electrode 8; the inner core electrode 7 is coaxially disposed inside the insulating ceramic tube 6, using enameled wire, and the exposed end of the enameled wire is coplanar with the clamping surface of the first external electrode 8; the left clamp handle 1, the left clamp head 3, the right clamp head 4, and the right clamp handle 2 are connected by an insulating rod body; the outer surface of the insulating rod body is covered with an insulating layer, which is made of high-temperature resistant polymer material to isolate the conduction of high-frequency current to non-target tissues.

[0064] The first external electrode 8 has a cylindrical structure with a through stepped hole in the center to accommodate the insulating ceramic tube 6. The insulating ceramic tube 6 is made of alumina or zirconium oxide bioceramic material and is fixed in the stepped hole by interference fit or medical-grade high-temperature glue. The inner core electrode 7 is made of copper alloy or stainless steel enameled wire with good conductivity. The outer layer of the enameled wire is wrapped with a high-voltage resistant insulating layer. The exposed end of the inner core electrode 7 is precision ground and is on the same physical plane as the clamping surface of the first external electrode 8, thereby forming a stable microelectrode detection array when in contact with tissue.

[0065] Its technical advantages are as follows: through spatial coaxial nesting and coplanar design of electrodes, the precise integration of detection functions is achieved while ensuring the slenderness of the clamp head, ensuring the sensitivity of signal acquisition and contact stability; by using high-performance insulating materials and multi-layer physical barriers, the range of current action is accurately located, eliminating the hidden dangers of high voltage breakdown and heat conduction burns.

[0066] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function is provided with a reset spring at the connection between the left clamp handle 1 and the right clamp handle 2; one end of the reset spring is connected to one of the left clamp handle 1 and the right clamp handle 2 as a movable handle, and drives the left clamp head 3 and the right clamp head 4 to open automatically when the clamping force is released.

[0067] Its technical advantages are as follows: by utilizing the mechanical elastic power provided by the return spring, the forceps head can be automatically opened and immediately reset in the non-working state, reducing the operator's manual opening action during repeated clamping and multi-point probing. While significantly reducing hand fatigue, it improves the smoothness and response speed of instrument operation in complex anatomical environments for function switching and continuous operation.

[0068] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function described above, wherein the mode switching module controls the current path to switch between high-frequency electrocoagulation mode, impedance detection mode, and nerve stimulation mode; in the high-frequency electrocoagulation mode, the first external electrode 8 and the second external electrode 9 are connected to the high-frequency host by default via the host connection line; in the impedance detection mode, the control board disconnects the host connection line from the first external electrode 8 and the second external electrode 9, connects the first external electrode 8 to the first acquisition signal line, and connects the inner core electrode 7 to the second acquisition signal line, so that the first external electrode 8 serves as a common terminal electrode and the inner core electrode 7 serves as an impedance detection terminal electrode, and the first acquisition signal line and the second acquisition signal line are connected to an impedance display; in the nerve stimulation mode, the control board disconnects the host connection line, connects the first external electrode 8 and the inner core electrode 7 to the signal output path of the nerve stimulation module, so that the first external electrode 8 serves as a common terminal electrode and the inner core electrode 7 serves as a stimulation output terminal electrode, and the parameter-adjustable stimulation signal is output through the relative electrode pair.

[0069] Its technical advantages are as follows: by reconstructing the logic and physically isolating the current path through the control board, a single instrument can safely switch between high-voltage energy output and low-voltage precision sensing or stimulation. While ensuring that high-frequency and high-voltage signals do not cause electromagnetic interference or physical damage to the sensitive acquisition circuit, the loop design of the common end-detector end can accurately locate the detection and stimulation functions to the local area of ​​the single-sided clamp head, which improves the convenience of function switching and the spatial resolution of local tissue identification during use.

[0070] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function further includes a redundant monitoring module. The redundant monitoring module includes: a Hall sensor disposed on the electrode line corresponding to the high-frequency electrocoagulation mode, used to sense current changes and detect the presence of a high-frequency high-voltage signal output; and a prompting logic unit electrically connected to the Hall sensor and the control board. When in impedance detection mode and the Hall sensor detects the high-frequency high-voltage signal, the prompting logic unit immediately generates an electrical signal to drive the impedance display to flash a warning signal. The impedance display uses a miniature OLED or LED array screen and is embedded in the operating back side of the left clamp handle 1.

[0071] Its technical advantages are as follows: it utilizes a non-contact Hall current sensing mechanism to monitor the status of high-frequency circuits in real time, providing logical redundancy protection at the physical level. This ensures that when performing micro-current impedance monitoring or nerve stimulation, it can immediately identify and warn of externally inserted high-voltage electrocoagulation signals, thereby effectively preventing high-energy electrical impacts on the precision acquisition circuit.

[0072] In a preferred embodiment of the present invention, the electrocoagulation device with integrated bioelectrical impedance identification function has an impedance display disposed on the left clamp 1 or the right clamp 2, for displaying the impedance component data in real time, and in response to the status prompt signal, displaying a reminder to switch between the current mode and the waiting operation mode.

[0073] Its technical effect is that by providing in-situ digital visual feedback and pattern warning prompts at the instrument handle, it enables the real-time presentation of tissue physical characteristics and equipment safety status, allowing users to accurately grasp the current working conditions while maintaining the surgical operation field of vision.

[0074] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function described above includes an impedance identification module comprising: a signal generator for generating a multi-frequency excitation signal and two reference signals with a 90° phase difference; a demodulation circuit including a voltage-to-current conversion circuit, a mixer, a low-pass filter, and an analog-to-digital converter electrically connected to each other; the mixer is used to mix the reference signal with the response signal returned by the inner core electrode 7, and after processing by the low-pass filter and the analog-to-digital converter, to obtain the real part data and the imaginary part data of the impedance.

[0075] Its technical advantages are as follows: through the orthogonal demodulation architecture, it achieves high-precision vector decoupling of weak response signals, effectively filtering out electromagnetic noise in the surgical environment while accurately acquiring the real and imaginary parts of tissue impedance data.

[0076] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function described above further includes a high-frequency isolation circuit in the mode switching module; the high-frequency isolation circuit is disposed on the signal path of the impedance identification module and the nerve stimulation module, and includes a high-voltage isolation relay connected in series in the high-frequency path and a transient voltage suppressor (TVS) protection group connected in parallel on the sensitive signal line; the high-frequency isolation circuit, in conjunction with the relay or solid-state switch on the control board, is used to completely physically disconnect the high-frequency electrocoagulation circuit in the impedance detection or nerve stimulation state, thereby filtering out residual high-frequency interference signals.

[0077] Its technical effect is that, through a dual protection mechanism of physical disconnection and frequency filtering, it blocks the risk of electrical damage to the precision monitoring circuit by high-frequency energy, while filtering out background noise.

[0078] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function described above includes a nerve stimulation module comprising: a pulse generation circuit that outputs a microcurrent pulse signal with adjustable frequency and amplitude; and a monitoring unit that monitors in real time the impedance change or evoked potential signal between the relative electrode pairs used for nerve stimulation when the pulse generation circuit outputs a signal, for the purpose of identifying nerve structures.

[0079] Its technical effect lies in the fact that, through the coordinated closed loop of adjustable pulse output and real-time electrical signal monitoring, dynamic identification and precise localization of neural structures are achieved.

[0080] In a preferred embodiment of the present invention, the electrocoagulation device integrating bioelectrical impedance identification function further includes: a calibration circuit, built into the impedance identification module, for compensating and calibrating the original signal returned by the inner core electrode 7; an audible and visual signal prompter, disposed on the left clamp 1 and electrically connected to the control board, for issuing differentiated reminder signals based on the processed impedance component data; and the control board having a self-test protection mechanism for real-time monitoring of the connection status of each module during mode switching.

[0081] The calibration circuit includes a preset standard impedance load network for periodically compensating and calibrating the original signal returned by the inner core electrode 7 to eliminate the influence of cable distributed capacitance; the audible and visual signal indicator includes a miniature buzzer and an RGB status indicator.

[0082] Its technical advantages are: through the deep integration of real-time signal compensation, multi-dimensional perception feedback and closed-loop self-test monitoring, it improves the measurement accuracy and operational stability under complex working conditions, and provides intuitive, accurate and highly safe operation assurance.

[0083] The embodiments of the present invention aim to protect an electrocoagulation device with integrated bioelectrical impedance identification function, which has the following effects:

[0084] 1. By using a precision nested coaxial electrode structure, the contradiction between multifunctional integration and limited surgical space is resolved, and high-precision local sensing of a single-sided forceps head is achieved.

[0085] This invention, through the design of a coaxial nested structure of a first external electrode, an insulating ceramic tube, and an inner core electrode in the left clamp head, retains the core function of bipolar electrocoagulation while endowing the single-sided clamp head with independent impedance detection and nerve stimulation capabilities. This not only maintains the slenderness of the clamp head to adapt to delicate surgery but also ensures the coplanar stability of the detection electrode and the clamping surface. It enables the acquisition of local tissue physical property parameters without closing the clamp jaws, thereby improving the spatial resolution of intraoperative tissue identification.

[0086] 2. By using time-division multiplexing mode switching and physical isolation mechanisms, the electromagnetic compatibility problem between high-frequency high-voltage energy and weak detection signals is solved, achieving absolute safety in the operation process.

[0087] This invention utilizes a mode switching module in conjunction with high-frequency filtering and isolation circuits to ensure complete control over the high-frequency electrocoagulation path and the micro-current monitoring path. When in impedance monitoring or neural stimulation mode, the relay or solid-state switch can completely disconnect the high-frequency circuit and filter out residual interference signals, eliminating the risk of high-energy impact on the precision sampling chip and achieving seamless and safe switching between energy output and accurate monitoring.

[0088] 3. By using a signal processing system based on an orthogonal demodulation architecture, the problem of noise interference in complex surgical environments was solved, and the vectorized and accurate extraction of tissue characteristics was achieved.

[0089] This invention utilizes a 90° phase difference reference signal generated by a signal generator, along with mixing and filtering circuitry, to accurately decouple the real and imaginary parts of the impedance from a noisy response signal. Combined with a built-in calibration circuit, it can eliminate the influence of environmental drift and conductor inductance, providing reliable complex impedance information.

[0090] 4. The redundancy monitoring and self-test protection mechanism of the Hall sensor reduces the safety risks of intraoperative misoperation.

[0091] This invention utilizes non-contact Hall current sensing technology to monitor the status of high-frequency circuits in real time, forming a second safety barrier independent of mode switching commands. When an abnormal high-voltage switch is detected in monitoring mode, it can respond immediately through audible and visual alarms and forced reset logic, ensuring the equipment operates in a safe state and reducing equipment failure rates and the risk of medical accidents.

[0092] 5. Through integrated human-computer interaction and mechanical feedback design, the operator's workload is reduced, achieving clinical ease of use.

[0093] This invention integrates a reset spring, a switching switch, and an impedance display into the clamp handle structure, achieving a combination of operational visibility and feedback information. During use, there is no need to frequently look up to observe the external monitor; continuous detection and hemostasis operations can be completed through the display reminders on the handle and the self-resetting mechanical feedback.

[0094] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An electrocoagulation device integrating bioelectrical impedance identification function, characterized in that, It includes a left jaw (1), a right jaw (2), and a left jaw (3) and a right jaw (4) that are respectively controlled by the opening and closing of the left jaw (1) and the right jaw (2). The front end of the left jaw (3) and the front end of the right jaw (4) are provided with interlocking teeth. The left clamp head (3) is provided with a nested multifunctional electrode, including a first outer electrode (8), an insulating ceramic tube (6) disposed inside the first outer electrode (8), and an inner core electrode (7) disposed inside the insulating ceramic tube (6). The first outer electrode (8) and the inner core electrode (7) constitute a pair of opposite electrodes for impedance detection and nerve stimulation. The right clamp head (4) is provided with a second external electrode (9), and the first external electrode (8) and the second external electrode (9) constitute a pair of opposite electrodes for high-frequency electrocoagulation; A mode switching module is provided at the connection between the left clamp (1) and the right clamp (2), including a switching switch (5) and a control board. The switching switch (5) is used to switch the current path between high-frequency electrocoagulation mode, impedance detection mode or nerve stimulation mode. The left clamp (1) is equipped with an impedance identification module and a neural stimulation module. The impedance identification module generates an excitation signal and a reference signal, demodulates the returned response signal, and obtains impedance component data characterizing the target characteristics. The neural stimulation module outputs a stimulation signal with adjustable parameters and identifies and monitors the target physiological structure based on the feedback signal.

2. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 1, characterized in that, The insulating ceramic tube (6) is embedded in the cavity formed by the first external electrode (8); The inner core electrode (7) is coaxially disposed inside the insulating ceramic tube (6) and is made of enameled wire. The exposed end of the enameled wire is coplanar with the clamping surface of the first outer electrode (8). The left clamp handle (1), the left clamp head (3), the right clamp head (4) and the right clamp handle (2) are connected by an insulating rod body; The outer surface of the insulating rod is covered with an insulating layer, which is made of a high-temperature resistant polymer material.

3. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 1, characterized in that, A return spring is provided at the connection between the left clamp handle (1) and the right clamp handle (2); One end of the reset spring is connected to one of the left clamp handle (1) and the right clamp handle (2) as the movable handle, and when the clamping force is released, it drives the left clamp head (3) and the right clamp head (4) to open automatically.

4. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 1, characterized in that, The mode switching module controls the current path to switch between high-frequency electrocoagulation mode, impedance detection mode and nerve stimulation mode. In the high-frequency electrocoagulation mode, the first external electrode (8) and the second external electrode (9) are connected to the high-frequency host by default via the host connection line; In the impedance detection mode, the control board disconnects the host connection line from the first external electrode (8) and the second external electrode (9), connects the first external electrode (8) to the first acquisition signal line, connects the inner core electrode (7) to the second acquisition signal line, so that the first external electrode (8) serves as the common terminal electrode, the inner core electrode (7) serves as the impedance detection terminal electrode, and the first acquisition signal line and the second acquisition signal line are connected to the impedance display. In the neural stimulation mode, the control board disconnects the host connection line and connects the first external electrode (8) and the inner core electrode (7) to the signal output path of the neural stimulation module, so that the first external electrode (8) serves as the common terminal electrode and the inner core electrode (7) serves as the stimulation output terminal electrode, and outputs the parameter-adjustable stimulation signal through the relative electrode pair.

5. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 4, characterized in that, It also includes a redundancy monitoring module, which includes: A Hall sensor is installed on the electrode circuit corresponding to the high-frequency electrocoagulation mode to sense changes in current and detect whether a high-frequency high-voltage signal is output. The prompt logic unit is electrically connected to the Hall sensor and the control board. When it is in impedance detection mode and the Hall sensor detects the high-frequency high-voltage signal, it generates a status prompt signal.

6. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 5, characterized in that, The impedance display is disposed on the left clamp (1) or the right clamp (2) for displaying the impedance component data in real time and, in response to the status prompt signal, displaying a reminder to switch between the current mode and the waiting mode.

7. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 1, characterized in that, The impedance identification module includes: A signal generator is used to generate multi-frequency excitation signals and two reference signals with a 90° phase difference. The demodulation circuit includes interconnected voltage-to-current conversion circuits, mixers, low-pass filters, and analog-to-digital converters; The mixer is used to mix the reference signal with the response signal returned by the inner core electrode (7), and after processing by the low-pass filter and analog-to-digital converter, the real part data and imaginary part data of the impedance are obtained.

8. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 1, characterized in that, The mode switching module is also equipped with a high-frequency isolation circuit; The high-frequency isolation circuit is disposed on the signal path of the impedance identification module and the nerve stimulation module; The high-frequency isolation circuit, in conjunction with the relays or solid-state switches on the control board, is used to completely physically disconnect the high-frequency electrocoagulation circuit under impedance detection or nerve stimulation conditions, thereby filtering out residual high-frequency interference signals.

9. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 1, characterized in that, The neural stimulation module includes: The pulse generation circuit outputs a micro-current pulse signal with adjustable frequency and amplitude. The monitoring unit monitors the impedance change or evoked potential signal between the relative electrode pairs used for nerve stimulation in real time when the pulse generation circuit outputs a signal, in order to identify neural structures.

10. The electrocoagulation device with integrated bioelectrical impedance identification function according to claim 1, characterized in that, Also includes: The calibration circuit, built into the impedance identification module, compensates and calibrates the original signal returned by the inner core electrode (7). An audio-visual signal prompter is installed on the left clamp handle (1) and electrically connected to the control board. It issues differentiated reminder signals based on the processed impedance component data. The control board has a self-test protection mechanism that monitors the connection status of each module in real time during mode switching.

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