Expansion device for nerve monitoring function

Abstract

The utility model provides an expansion device with a nerve monitoring function. The expansion device comprises a base and a function switching circuit, the base is provided with a high-frequency connecting end used for being connected with high-frequency generator equipment, a nerve monitoring connecting end used for being connected with a nerve monitor and an equipment connecting end used for being connected with surgical equipment, and the high-frequency connecting end is matched with the interface type of the equipment connecting end; the function switching circuit comprises a first input end, a second input end and an output end; under the condition that the first input end is electrically connected with the output end, the function switching circuit outputs a high-frequency excitation signal output by the high-frequency generator equipment to the surgical equipment through the output end, so that the surgical equipment realizes an electrocoagulation and electroresection function; under the condition that the second input end is electrically connected with the output end, the function switching circuit transmits the nerve stimulation signal output by the nerve monitor to the surgical equipment so that the surgical equipment can achieve the nerve monitoring function, and therefore the nerve monitoring function can be expanded for the surgical equipment connected with the expansion device in an inserted mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, specifically, relate to an extension device of nerve monitoring function. BACKGROUND

[0002] Hemostasis is a basic and special problem in neurosurgery operation, and the application of electrocoagulation and electrocision operation equipment (such as electrocoagulation forceps, electrotome, electric hook, plasma scalpel, or surgical robot with electrocoagulation and electrocision function) makes the hemostasis of neurosurgery more convenient and fast, and does not leave foreign matter in the tissue, and the postoperative CT (Computed Tomography, computer tomography) review has no interference of pseudomorph, which has become an important part of current microsurgical operation technology, and is the most commonly used neurosurgical equipment.

[0003] In addition, in the neck operation (such as thyroid malignant tumor operation), electrocoagulation equipment is also needed to electrocoagulate small blood vessels, and the small blood vessels are similar to the nerves in the naked eye, if the resection range is adjacent to important structures such as superior laryngeal nerve and accessory nerve, the nerves will be mistaken for blood vessels for electrocoagulation, which will cause nerve injury, which is one of the main complications of operation.

[0004] Therefore, in order to avoid the damage to the nerves during the operation, and at the same time avoid the frequent switching of the operation equipment to reduce the operation efficiency, the electrocoagulation and electrocision operation equipment usually needs to have the nerve detection function. However, the current electrocoagulation and electrocision operation equipment does not have the nerve detection function, if it is required to have the electrocoagulation and electrocision and nerve detection functions at the same time, a new operation equipment needs to be developed, which leads to high replacement cost and waste of existing operation equipment. UTILITY MODEL CONTENT

[0005] The utility model embodiment provides at least an extension device of nerve monitoring function, the extension device is used for being connected with operation equipment, so that the operation equipment is extended nerve monitoring function;

[0006] The extension device comprises a base and a function switching circuit, and the function switching circuit is arranged in the base;

[0007] The base is provided with a high-frequency connection end, a nerve monitoring connection end and a device connection end;The high-frequency connection end is used for being connected with a high-frequency generator device, and the nerve monitoring connection end is used for being connected with a nerve monitor;The device connection end is used for being connected with the operation equipment;The interface type of the high-frequency connection end and the device connection end is matched;

[0008] The function switching circuit comprises a first input end, a second input end and an output end, the first input end is connected with the high-frequency connection end, the second input end is connected with the nerve monitoring connection end, and the output end is connected with the equipment connection end;

[0009] When the first input end is electrically connected with the output end, the function switching circuit outputs the high-frequency excitation signal output by the high-frequency generator equipment to the surgical equipment through the output end, so that the surgical equipment realizes the function of electrocoagulation and electrocision.

[0010] When the second input end is electrically connected with the output end, the function switching circuit transmits the nerve stimulation signal output by the nerve monitor to the surgical equipment, so that the surgical equipment realizes the function of nerve monitoring.

[0011] In a possible implementation, the interface type matching of the high-frequency connection end and the equipment connection end means that the interface type of one of the high-frequency connection end and the equipment connection end is a female connector, and the interface type of the other is a male connector corresponding to the female connector.

[0012] In a possible implementation, the high-frequency connection end and the equipment connection end are respectively arranged on opposite sides of the base.

[0013] In a possible implementation, the function switching circuit comprises:

[0014] The nerve monitoring switching circuit comprises a relay, the relay comprises a normally closed connection end, a normally open connection end and a controllable connection end, the normally closed connection end of the relay corresponds to the first input end, the normally open connection end of the relay corresponds to the second input end, and the controllable connection end of the relay corresponds to the output end.

[0015] In a possible implementation, the controllable connection end of the relay is electrically connected with the normally closed connection end by default.

[0016] In a possible implementation, the controllable connection end of the relay is electrically connected with the normally open connection end in response to a manual switching signal.

[0017] In a possible implementation, the function switching circuit further comprises:

[0018] The high-frequency excitation recognition circuit is used for detecting whether the high-frequency generator equipment outputs a high-frequency excitation signal, and generating a corresponding sensing signal according to the detected high-frequency excitation signal;

[0019] a controller, an input of the controller being connected with an output of the high-frequency excitation identification circuit, for determining whether the high-frequency generator device outputs the high-frequency excitation signal according to the inductive signal, and generating a function switching signal in a case that it is determined that the high-frequency generator device does not output the high-frequency excitation signal;

[0020] The nerve monitoring switching circuit controls the controllable connection end of the relay to be electrically connected with the normally open connection end in response to the function switching signal.

[0021] In a possible implementation, the extension device further comprises a first prompting circuit, the first prompting circuit being connected with the controller.

[0022] The controller is further configured to generate a first prompting signal in a case that it is determined that the high-frequency generator device does not output the high-frequency excitation signal.

[0023] The first prompting circuit is configured to generate first prompting information in response to the first prompting signal, the first prompting information being used to instruct the surgical device to switch to the nerve monitoring function.

[0024] In a possible implementation, the extension device further comprises a second prompting circuit, the second prompting circuit being connected with the controller.

[0025] The controller is further configured to generate a second prompting signal in a case that it is determined that the high-frequency generator device outputs the high-frequency excitation signal.

[0026] The second prompting circuit is configured to generate second prompting information in response to the second prompting signal, the second prompting information being used to instruct the surgical device to switch to the electrocoagulation and electrocision function.

[0027] In a possible implementation, the extension device further comprises a power supply device, the power supply device being connected with the function switching circuit, for supplying power for the function switching circuit, and the power supply device is arranged in the base.

[0028] The extension device for the nerve monitoring function provided by the embodiment of the utility model, because including base and setting in the function switch circuit of the base, the base is provided with high frequency connection end for connecting with high frequency generator equipment, nerve monitoring connection end for connecting with nerve monitor and equipment connection end for connecting with surgical equipment, in this way, when the existing surgical equipment without nerve monitoring function is plugged with the extension device, the switching between electrocoagulation and electrocision function and nerve detection function can be realized through the function switch circuit. In addition, because the interface type of high frequency connection end and equipment connection end is matched, after the existing surgical equipment is plugged with the extension device, the high frequency connection end is directly connected with high frequency generator equipment, and then the extension function of nerve monitoring can be realized without changing the existing surgical equipment and the plugging mode of the existing surgical equipment, so that the cost can be reduced and the user can use conveniently.

[0029] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are taken as an example, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are taken as an example, and the accompanying drawings are described in detail as follows.

[0031] Figure 1 The utility model embodiment provides a kind of extension device for the nerve monitoring function and the schematic diagram of surgical equipment after plugging is shown;

[0032] Figure 2 The connection schematic diagram of the function switch circuit and each connection end provided by the embodiment of the utility model is shown;

[0033] Figure 3 The application scenario schematic diagram of the extension device for the nerve monitoring function provided by the embodiment of the utility model is shown;

[0034] Figure 4 The circuit structure schematic diagram of a kind of nerve monitoring switch circuit provided by the embodiment of the utility model is shown;

[0035] Figure 5 The principle block diagram of a kind of function switch circuit provided by the embodiment of the utility model is shown;

[0036] Figure 6 A principle block diagram of another function switching circuit is shown in the embodiment of the utility model;

[0037] Figure 7 A circuit principle diagram of a function switching circuit is shown in the embodiment of the utility model;

[0038] Figure 8 A circuit principle diagram of another function switching circuit is shown in the embodiment of the utility model.

[0039] Reference signs:

[0040] 100 - extension device of nerve monitoring function, 200 - surgical equipment, 300 - high frequency generator equipment, 400 - nerve monitor, 202 - tip of forceps, 201 - plug-in end, 101 - high frequency connection end, 102 - nerve monitoring connection end, 103 - equipment connection end, 10 - base, 20 - function switching circuit, 21 - first input end, 22 - second input end, 23 - output end, 24 - high frequency excitation identification circuit, 25 - controller, 26 - nerve monitoring switching circuit, 27 - first prompt circuit, 28 - second prompt circuit, L - mutual inductor, U - comparator, R1 - first resistance, R2 - second resistance, R3 - third resistance, R4 - fourth resistance, R5 - fifth resistance, R6 - sixth resistance, R7 - seventh resistance, R8 - eighth resistance, R9 - ninth resistance, R10 - tenth resistance, R11 - eleventh resistance, K - relay, Q1 - first electronic switch, Q2 - second electronic switch, Q3 - third electronic switch, D1 - first light emitting diode, D2 - second light emitting diode, X - converter, C1 - first capacitor, C2 - second capacitor, C3 - third capacitor, C4 - fourth capacitor. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0042] It should be noted that like numerals and letters refer to like items throughout the drawings, and once an item is defined in one drawing, it should not require further defining and explaining in the subsequent drawings.

[0043] The term "and / or", used herein only describes an associated relationship, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B and C can mean including any one or more elements selected from the set consisting of A, B and C.

[0044] In the description of the embodiments of the utility model, it should be pointed out that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the disclosed product is placed, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0046] Among them, the electrical connection can be understood as the process of connecting different components in electronic equipment through electrical connection, the main function of electrical connection is to transmit electrical signals and electrical energy, and to realize the control and adjustment of various electronic equipment. Mechanical connection refers to the way of connecting two or more components together through physical means.

[0047] It is found through research that, in order to avoid nerve damage during a surgery and at the same time avoid frequent switching of surgical equipment to reduce the efficiency of the surgery, the electrocoagulation and electrocision surgical equipment usually needs to have a nerve detection function. However, most of the current electrocoagulation and electrocision surgical equipment does not have a nerve detection function, and if it is desired to have both electrocoagulation and electrocision and nerve detection functions, a new surgical equipment needs to be developed, resulting in a high replacement cost and waste of the existing surgical equipment.

[0048] Based on the above research, the utility model embodiment provides an extension device of a nerve monitoring function, which comprises a base and a function switching circuit arranged in the base. The base is provided with a high-frequency connection end for connecting with a high-frequency generator device, a nerve monitoring connection end for connecting with a nerve monitor, and a device connection end for connecting with a surgical equipment. In this way, when the surgical equipment without the nerve monitoring function is plugged with the extension device, the function switching circuit can realize switching between the electrocoagulation and electrocision function and the nerve detection function.

[0049] In addition, since the interface types of the high-frequency connection end and the device connection end are matched, after the existing surgical equipment is plugged with the extension device, the high-frequency connection end can be directly connected with the high-frequency generator device, and thus the extension function of the nerve monitoring can be realized without changing the existing surgical equipment and the plugging mode of the existing surgical equipment, so that the cost can be reduced and the user can use it conveniently.

[0050] The extension device of the nerve monitoring function provided by the utility model embodiment will be described in detail below with reference to the drawings.

[0051] Referring to Figure 1 As shown in the figure, the extension device of the nerve monitoring function provided by the utility model embodiment is plugged with the surgical equipment, and a schematic view after plugging is shown. As shown in the figure, Figure 1 The extension device 100 (hereinafter referred to as the extension device) is used to connect with the surgical equipment 200 to extend the nerve monitoring function for the surgical equipment 200. The surgical equipment 200 includes but is not limited to an electrocoagulation forceps, an electroknife, an electric hook, a plasma scalpel, or a surgical robot with an electrocoagulation and electrocision function, etc. The surgical equipment 200 originally has an electrocoagulation and electrocision function.

[0052] Please refer to Figure 2 The extension device 100 comprises a base 10 and a function switching circuit 20 arranged in the base 10. The base 10 is provided with a high-frequency connection end 101, a nerve monitoring connection end 102, and a device connection end 103. The high-frequency connection end 101 is used to connect with a high-frequency generator device 300, the nerve monitoring connection end 102 is used to connect with a nerve monitor 400, and the device connection end 103 is used to connect with the surgical equipment 200.

[0053] The function switching circuit 20 comprises a first input end 21, a second input end 22 and an output end 23. The first input end 21 is connected with the high-frequency connection end 101, the second input end 22 is connected with the nerve monitoring connection end 102, and the output end 23 is connected with the device connection end 103.

[0054] When the first input end 21 is electrically connected with the output end 23, the function switching circuit 20 outputs the high-frequency excitation signal output by the high-frequency generator device 300 to the surgical device 200 through the output end 23, so that the surgical device 200 realizes the electrocoagulation and electrocutting function; when the second input end 22 is electrically connected with the output end 23, the function switching circuit 20 transmits the nerve stimulation signal output by the nerve monitor 400 to the surgical device 200, so that the surgical device 200 realizes the nerve monitoring function. In this way, when the surgical device 200 without the nerve monitoring function is plugged with the expansion device 100, the switching between the electrocoagulation and electrocutting function and the nerve detection function can be realized through the function switching circuit 20.

[0055] In some embodiments, the interface types of the high-frequency connection end 101 and the device connection end 103 are matched. Wherein, the interface types of the high-frequency connection end 101 and the device connection end 103 are matched refers to that the interfaces of the high-frequency connection end 101 and the device connection end 103 are arranged in pairs, for example, if the interface type of the high-frequency connection end 101 is a male interface, the interface type of the device connection end 103 is a female interface, if the interface type of the high-frequency connection end 101 is a female interface, the interface type of the device connection end 103 is a male interface. That is, the type of the high-frequency connection end 101 is the same as that of the plug-in end 201 of the surgical device 200, so that, as shown in the figure, the surgical device 200 can be directly plugged with the high-frequency generator device 300, and after the surgical device 200 is plugged with the expansion device 100, the high-frequency connection end 101 of the expansion device 100 can also be directly plugged with the high-frequency generator device 300 without other improvements, so that the expansion of the surgical device 200 to realize the nerve monitoring function can be realized, thereby reducing the cost and facilitating the use of users. Figure 3

[0055] In some embodiments, the interface types of the high-frequency connection end 101 and the device connection end 103 are matched. Wherein, the interface types of the high-frequency connection end 101 and the device connection end 103 are matched refers to that the interfaces of the high-frequency connection end 101 and the device connection end 103 are arranged in pairs, for example, if the interface type of the high-frequency connection end 101 is a male interface, the interface type of the device connection end 103 is a female interface, if the interface type of the high-frequency connection end 101 is a female interface, the interface type of the device connection end 103 is a male interface. That is, the type of the high-frequency connection end 101 is the same as that of the plug-in end 201 of the surgical device 200, so that, as shown in the figure, the surgical device 200 can be directly plugged with the high-frequency generator device 300, and after the surgical device 200 is plugged with the expansion device 100, the high-frequency connection end 101 of the expansion device 100 can also be directly plugged with the high-frequency generator device 300 without other improvements, so that the expansion of the surgical device 200 to realize the nerve monitoring function can be realized, thereby reducing the cost and facilitating the use of users.

[0056] The interface type matching of the high-frequency connection end 101 and the device connection end 103 means that the interface type of one of the high-frequency connection end 101 and the device connection end 103 is a female connector, and the interface type of the other is a male connector corresponding to the female connector. In addition, the male-female corresponding connectors can correspond to all pins or part of the pins. For example, if the female connector includes four sockets, the male connector can include 4 pins, or 3 pins or 2 pins, which can be set according to actual needs. When the number of pins included in the male connector is less than the number of sockets of the female connector, part of the sockets of the female connector will be suspended when the two are plugged in.

[0057] In the embodiment of the utility model, the surgical equipment 200 is a bipolar coagulation forceps. The high-frequency connection end 101 includes two plug-in terminals, and the two plug-in terminals are respectively used for connecting with the tip 202 of the coagulation forceps.

[0058] In some embodiments, the high-frequency connection end 101 and the device connection end 103 are respectively arranged on opposite sides of the base 10. In this way, the extension of the nerve monitoring function can be realized without changing the existing use mode of the surgical equipment 200, thereby improving the user's experience.

[0059] Referring to Figure 4 As shown in the figure, the function switching circuit 20 includes a nerve monitoring switching circuit 26, and the nerve monitoring switching circuit 26 includes a relay K, the relay K includes a normally closed connection end (pins 2, 7), a normally open connection end (pins 4, 5) and a controllable connection end (pins 3, 6), the normally closed connection end of the relay K corresponds to the first input end 21, the normally open connection end of the relay K corresponds to the second input end 22, and the controllable connection end of the relay K corresponds to the output end 23. Exemplarily, the controllable connection end of the relay K is electrically connected with the normally closed connection end by default. In this way, after the surgical equipment 200 is plugged with the extension device 100, the original coagulation and cutting function of the surgical equipment 200 can be realized without other operations, that is, under the default condition, the original coagulation and cutting function of the surgical equipment 200 will not be affected by plugging the extension device 100.

[0060] In some embodiments, the controllable connection end of the relay K is electrically connected with the normally open connection end in response to a manual switching signal. In this way, the function switching circuit can output the nerve stimulation signal output by the nerve monitor to the surgical equipment 200, that is, the extension device 100 can switch to the nerve monitoring function in response to the manual operation of the user, thereby realizing the manual switching of the nerve monitoring function according to the actual needs of the user.

[0061] In some embodiments, referring to Figure 5As shown, the function switching circuit 20 further comprises a high-frequency excitation identification circuit 24 and a controller 25. The high-frequency excitation identification circuit 24 is configured to detect whether the high-frequency generator device 300 outputs a high-frequency excitation signal, and generate a corresponding sensing signal according to the detected high-frequency excitation signal. The input end of the controller 25 is connected with the output end of the high-frequency excitation identification circuit 24, and the controller 25 is configured to determine whether the high-frequency generator device 300 outputs the high-frequency excitation signal according to the sensing signal, and generate a function switching signal in the case that it is determined that the high-frequency generator device 300 does not output the high-frequency excitation signal. The nerve monitoring switching circuit 26 is configured to control the controllable connection end of the relay K to be electrically connected with the normally open connection end in response to the function switching signal. That is, in the case that it is detected that the high-frequency generator device 300 does not output the high-frequency excitation signal, the function switching circuit 20 can automatically switch the surgical device to the nerve monitoring function, so that the user does not need to manually operate, and thus the surgical efficiency can be improved.

[0062] It can be understood that the high-frequency excitation identification circuit 24, the controller 25 and the nerve monitoring switching circuit 26 can be arranged on the same or different printed circuit boards, and the circuit boards can be placed in the base 10.

[0063] Optionally, the controller 25 is further configured to generate a function recovery signal in the case that it is determined that the high-frequency generator device 300 outputs the high-frequency excitation signal according to the sensing signal, and the nerve monitoring switching circuit 26 is further configured to control the controllable connection end of the relay K to be electrically connected with the normally closed connection end in response to the function recovery signal, so as to switch the surgical device 200 to the electrocoagulation and electrocutting function.

[0064] In the embodiment, the high-frequency excitation signal can be a high-frequency current signal, and the nerve stimulation signal is a current signal (stimulation current). The function switching signal is one of a high-level signal and a low-level signal, and the function recovery signal is the other of the high-level signal and the low-level signal, that is, if the function switching signal is a high-level signal, the function recovery signal is a low-level signal.

[0065] Please refer to Figure 6 In some embodiments, the function switching circuit 20 further comprises a first prompting circuit 27 connected with the controller 25. The controller 25 is further configured to generate a first prompting signal after generating the function switching signal, and the first prompting circuit 27 is configured to generate first prompting information in response to the first prompting signal, and the first prompting information is used to indicate that the nerve monitoring function of the extension device 100 is turned on. In the embodiment of the utility model, the first prompting information is light prompting information. It can be understood that the first prompting information is generated simultaneously with the generation of the function switching signal or within a preset time (such as 10 ms or 30 ms) after the generation of the function switching signal.

[0066] Optionally, the function switching circuit 20 can further comprise a second prompting circuit 28 connected with the controller 25. The controller 25 is further configured to generate a second prompting signal when it is determined that the coagulation and cutting function of the extension device 100 is turned on; and the second prompting circuit 28 is configured to generate second prompting information in response to the second prompting signal, the second prompting information being used to indicate that the coagulation and cutting function of the extension device is turned on. In the embodiment of the utility model, the second prompting information is also light prompting information, and the light color is different from the first prompting information.

[0067] It can be understood that the first prompting information and the second prompting information can also be other types of prompting information, such as voice prompting information, alarm prompting information, etc., and the specific type is not limited. In addition, the first prompting signal and the second prompting signal can be low-level signals or high-level signals.

[0068] In the embodiment of the utility model, the controller 25 can be a single-chip microcomputer, a micro control unit (MCU) or the like. The controller 25 can comprise a plurality of signal acquisition ports, a communication port, a plurality of control ports and the like. The controller 25 can be connected with the high-frequency excitation identification circuit 24 through the signal acquisition port to obtain the inductive signal output by the high-frequency excitation identification circuit 24. The controller 25 can also be connected with the nerve monitoring switching circuit 26, the first prompting circuit 27 and the second prompting circuit 28 through the plurality of control ports to control the corresponding electronic devices or circuit structures according to different control requirements.

[0069] In other embodiments, the controller 25 can also be an application specific integrated circuit (ASIC), a programmable logic device (PLD), a digital signal processor (DSP) or a combination thereof. The above-mentioned PLD can be a complex programmable logic device (CPLD), a field programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof, and the embodiment of the utility model does not make specific limitation.

[0070] In some embodiments, the extension device 100 further comprises a power supply device (not shown) for supplying power to the function switching circuit 20, which is arranged in the base 10. Exemplarily, the power supply device can be various types of batteries (such as dry batteries or storage batteries, etc.) capable of providing electric energy.

[0071] The specific implementation of each circuit in the function switching circuit 20 will be described below. Figure 7 The specific implementation of each circuit in the function switching circuit 20 will be described below.

[0072] Referring to Figure 7 As shown, the high-frequency excitation identification circuit 24 can include a mutual inductor L, first to fourth resistors R1-R4, and a comparator U. The mutual inductor L is connected in parallel with the first resistor R1 and in series with the second resistor R2 between the non-inverting input terminal of the comparator U and the ground, the inverting input terminal of the comparator U is grounded through the third resistor R3, the output terminal of the comparator U is connected with the input terminal of the controller 25, and the output terminal of the comparator U is further connected with the inverting input terminal of the comparator U through the fourth resistor R4. In this way, whether the high-frequency generator device 300 outputs a high-frequency excitation signal can be detected through the mutual inductor L, and after detecting that the high-frequency generator device 300 outputs a high-frequency excitation signal, a corresponding induction signal is generated and transmitted to the controller 25 after being amplified by the comparator U, so that the controller 25 obtains the corresponding induction signal.

[0073] Specifically, the mutual inductor L can be a mutual inductor coil. When the foot switch (not shown) of the high-frequency generator device 300 is triggered to output a high-frequency excitation signal, the mutual inductor coil can sense the change of the current and further generate a corresponding induction signal.

[0074] The nerve monitoring switching circuit 26 includes a relay K, a first electronic switch Q1, and a fifth resistor R5. The control terminal of the first electronic switch Q1 is connected with the control terminal of the controller 25, the first connection terminal of the first electronic switch Q1 is grounded through the fifth resistor R5, the second connection terminal of the first electronic switch Q1 is connected with the pin 1 of the relay K, the pin 2 of the relay K is connected with the power supply, the pin 2 and the pin 7 of the relay K correspond to the first input terminal 21 of the nerve monitoring switching circuit 26, and the pin 2 and the pin 7 are used to be connected with the high-frequency connection terminal 101, so that the high-frequency excitation signal output by the high-frequency generator device 300 can be received through the high-frequency connection terminal 101. The pin 4 and the pin 5 of the relay K correspond to the second input terminal 22 of the nerve monitoring switching circuit 26, and the pin 4 and the pin 5 are used to be connected with the nerve monitoring connection terminal 102, so that the nerve stimulation signal output by the nerve monitoring instrument 400 can be received through the nerve monitoring connection terminal 102. The pin 3 and the pin 6 of the relay K correspond to the output terminal of the nerve monitoring switching circuit 26, and the pin 3 and the pin 6 are used to be connected with the tip of the surgical device 200.

[0075] In this way, when the first electronic switch Q1 receives the function switching signal and is turned on, the corresponding driving signal is generated, the pin 5 and the pin 6 of the relay K are electrically connected and turned on, the pin 3 and the pin 4 are electrically connected and turned on, the nerve stimulation signal provided by the nerve monitor 400 is transmitted to the surgical equipment 200 through the nerve monitoring switching circuit 26, and then the nerve monitoring function is realized for the surgical equipment 200 through the expansion device 100; when the first electronic switch Q1 receives the function recovery signal, the pin 5 and the pin 6 are disconnected and electrically connected with the pin 7, the pin 3 and the pin 4 are disconnected and electrically connected with the pin 2, at this time, the nerve stimulation signal provided by the nerve monitor 400 cannot be transmitted to the surgical equipment 200 through the nerve monitoring switching circuit 26, the high-frequency excitation signal output by the high-frequency generator device 300 can be transmitted to the surgical equipment 200 through the nerve monitoring switching circuit 26, and then the nerve monitoring function of the expansion device 100 is closed, and the electrocoagulation and electrocutting functions of the surgical equipment 200 are recovered.

[0076] In the embodiment of the utility model, the first electronic switch Q1 is N type field effect tube, the first connection end of this first electronic switch Q1 should be the source of N type field effect tube, the second connection end of first electronic switch Q1 should be the drain of N type field effect tube. In other embodiments, the first electronic switch Q1 can also be a triode, etc., and is not specifically limited.

[0077] The first prompt circuit 27 includes a first light emitting diode D1, a second electronic switch Q2, a sixth resistor R6 to an eighth resistor R8. Among them, the control end of the second electronic switch Q2 is connected with one control end of the controller 25 through the sixth resistor R6, the first connection end of the second electronic switch Q2 is grounded through the seventh resistor R7, the second connection end of the second electronic switch Q2 is connected with the cathode of the first light emitting diode D1, and the anode of the first light emitting diode D1 is connected with the power supply. In addition, the control end of the second electronic switch Q2 is also connected with the first connection end of the second electronic switch Q2 through the eighth resistor R8.

[0078] The second prompt circuit 28 is similar to the first prompt circuit 27, and includes a second light emitting diode D2, a third electronic switch Q3, a ninth resistor R9 to an eleventh resistor R11. Among them, the control end of the third electronic switch Q3 is connected with one control end of the controller 25 through the ninth resistor R9, the first connection end of the third electronic switch Q3 is grounded through the tenth resistor R10, the second connection end of the third electronic switch Q3 is connected with the cathode of the second light emitting diode D1, and the anode of the second light emitting diode D2 is connected with the power supply. In addition, the control end of the third electronic switch Q3 is also connected with the first connection end of the third electronic switch Q3 through the eleventh resistor R11.

[0079] The light emitting colors of the first light emitting diode D1 and the second light emitting diode D2 are different.

[0080] The second electronic switch Q2 and the third electronic switch Q3 are both N-type field effect tubes.

[0081] It can be understood that, in some embodiments, the first light emitting diode D1 and the second light emitting diode D2 can also be replaced by sound generating devices, such as a buzzer, so that the prompting can be performed through sound.

[0082] Referring to Figure 8 The circuit principle diagram of the function switching circuit provided by another embodiment of the utility model is different from that shown in Figure 7 The high-frequency excitation recognition circuit 24 further comprises a converter X, wherein the converter X can convert the root mean square (RMS) value of the alternating current signal into a direct current voltage, and therefore, the converter is also called an RMS-TO-DC converter.

[0083] The high-frequency electric energy outputs an alternating current signal through the mutual inductor L, the RMS-TO-DC converter can convert the root mean square value of the alternating current signal into a direct current voltage, the comparator U compares the direct current voltage with the set threshold value, when the direct current voltage is higher than the threshold value, 1 is output, otherwise, 0 is output; after receiving the 1 signal, the relay K turns on the pin 6 and the pin 5, turns on the pin 3 and the pin 4, and then can output the nerve stimulation signal of the nerve monitor 400 to the tip 101, realizes the nerve monitoring function, otherwise, turns on the pin 6 and the pin 7, turns on the pin 3 and the pin 2, and then can output the high-frequency excitation signal of the high-frequency generator device 300 to the surgical device 200, realizes the electrocoagulation and electrocision function.

[0084] It should be noted that, due to Figure 8 The circuit elements included in the high-frequency excitation recognition circuit 24 are different, and then the induced signals output by the high-frequency excitation recognition circuit 24 are different, therefore, the controller 25 can configure corresponding induced signal recognition and determination algorithms according to the circuit composition of the high-frequency excitation recognition circuit 24.

[0085] In addition, the input pin VIN of the converter X is connected with the first resistor R1 and the mutual inductor L through the first capacitor C1 respectively; the output pin OUTPUT of the converter X is connected with the non-inverting input terminal of the comparator U through the third resistor R3, and the output pin OUTPUT of the converter X is also connected with the pin CF of the converter X through the second capacitor C2; the power supply pin VS of the converter X is grounded through the third capacitor C3, and the power supply pin +VS is grounded through the fourth capacitor C4; the pin CAV of the converter X is connected with the power supply pin VS through the fifth capacitor C5; the pin COM of the converter X is connected with the pin CC of the converter X through the sixth capacitor C6.

[0086] Referring to Figure 7 As shown in the actual application, the high-frequency generator device 300 can be connected to a foot switch, so that when the operation (such as thyroid surgery) is performed, the user (such as a doctor) steps on the foot switch, and the high-frequency excitation recognition circuit 24 generates an induction signal, and the controller 25 determines that the coagulation and cutting function is turned on according to the induction signal, and then a function recovery signal can be generated to control the nerve monitoring switching circuit 26 to stop outputting the nerve stimulation signal of the nerve monitor 400, at this time, the coagulation and cutting function of the surgical device 200 is turned on, and the surgical device 200 can perform coagulation and cutting operations.

[0087] When the user (such as a doctor) releases the foot switch, the high-frequency excitation recognition circuit 24 will not generate an induction signal, or generate a weak induction signal, at this time, the controller 25 determines that the coagulation and cutting function is turned off, and then a function switching signal is generated to control the nerve monitoring switching circuit 26 to output the nerve stimulation signal of the nerve monitor 400, at this time, the surgical device 200 can realize the nerve monitoring function.

[0088] In this way, when the surgical device 200 is close to the nerve anatomical separation tissue, before coagulation and cutting of the tissue, the stimulation current signal of the nerve monitor 400 will be conducted to the tissue part to be monitored through the surgical device 200, and then the myoelectric feedback signal generated by the tissue stimulated by the current will be transmitted back to the nerve monitor 400 by the signal receiving needle electrode inserted into the subcutaneous tissue, if the monitor screen does not display the nerve myoelectric waveform diagram and the voice cord activity response prompt sound is not heard, it can be considered that there is no nerve in the detected area tissue, at this time, the necessary surgical operation can be performed with confidence, if the nerve myoelectric waveform and the myoelectric activity prompt sound are seen, it indicates that there is a nerve in the region tissue, and the nerve needs to be carefully separated and dissected to avoid intraoperative nerve injury.

[0089] The extension device 100 of the nerve monitoring function provided by the embodiment of the utility model, because including base 10 and set up in the function switch circuit 20 of base 10, and base 10 is provided with the high frequency connection end 101 for connecting with high frequency generator equipment 300, the nerve monitoring connection end 102 for connecting with nerve monitor 400 and the equipment connection end 103 for connecting with surgical equipment 200, in this way, when the existing surgical equipment 200 without nerve monitoring function is plugged with the extension device 100, can realize the switching between electrocoagulation and nerve detection function through the function switch circuit 20.

[0090] In addition, because the interface type of high frequency connection end 101 and equipment connection end 103 matches, so that the existing surgical equipment 200 is plugged with the extension device 100, through the high frequency connection end 101 is directly connected with high frequency generator equipment 300, and then the extension function of nerve monitoring can be realized without changing the existing equipment and the plugging mode of the existing equipment, so that the cost can be reduced and the user can use conveniently.

[0091] Those skilled in the art can clearly understand that the above-described embodiment of the principle block diagram is only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division mode, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some communication interface, device or unit, which can be electrical, mechanical or other forms.

[0092] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, i.e. can be located in one place or can be distributed on multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0093] In addition, each functional unit in each embodiment of the utility model can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0094] Finally, it should be noted that: the above-described embodiments, only for the specific embodiments of the present application, to illustrate the technical scheme of the present application, rather than limit it, the scope of protection of the present application is not limited to this, although the foregoing detailed description of the present application is made by referring to the prior art, those skilled in the art should understand: any familiar with the technical field of the technical person within the scope of the present application disclosed by the technology, it still can be modified or easily thought of changes to the technical solution recorded in the foregoing examples, or part of the technical features of the equivalent replacement; and these modifications, changes or replacement, and do not make the corresponding technical solutions of the essence of the present application embodiments technical scheme deviate from the spirit and scope, all should be covered in the scope of protection of the present application. Therefore, the scope of protection of the present application should be said to the scope of protection of the claims.

Claims

1. An extension device for neuro-monitoring functions, characterized in that The extension device is used in connection with a surgical device to extend the nerve monitoring function of the surgical device; the extension device comprises a base and a function switching circuit arranged in the base; The base is provided with a high-frequency connection end, a nerve monitoring connection end and a device connection end; the high-frequency connection end is used in connection with a high-frequency generator device, the nerve monitoring connection end is used in connection with a nerve monitor, and the device connection end is used in connection with the surgical device; wherein the interface types of the high-frequency connection end and the device connection end are matched; The function switching circuit comprises a first input end, a second input end and an output end, the first input end is connected with the high-frequency connection end, the second input end is connected with the nerve monitoring connection end, and the output end is connected with the device connection end; In the case that the first input end and the output end are electrically connected, the function switching circuit outputs the high-frequency excitation signal output by the high-frequency generator device to the surgical device through the output end, so that the surgical device realizes the electrocoagulation and electrocutting function; In the case that the second input end and the output end are electrically connected, the function switching circuit transmits the nerve stimulation signal output by the nerve monitor to the surgical device, so that the surgical device realizes the nerve monitoring function.

2. The extension device of claim 1, wherein, The interface types of the high-frequency connection end and the device connection end are matched, that is, the interface type of one of the high-frequency connection end and the device connection end is a female connector, and the interface type of the other is a male connector corresponding to the female connector.

3. The extension device of claim 1, wherein, The high-frequency connection end and the device connection end are respectively arranged on opposite sides of the base.

4. The extension device of claim 1, wherein, The function switching circuit comprises: A nerve monitoring switching circuit, the nerve monitoring switching circuit comprises a relay, the relay comprises a normally closed connection end, a normally open connection end and a controllable connection end, the normally closed connection end of the relay corresponds to the first input end, the normally open connection end of the relay corresponds to the second input end, and the controllable connection end of the relay corresponds to the output end.

5. The extension device of claim 4, wherein, The controllable connection end of the relay is electrically connected with the normally closed connection end by default.

6. The extension device of claim 5, wherein, The controllable connection end of the relay is electrically connected with the normally open connection end in response to a manual switching signal.

7. The extension device of claim 4, wherein, The function switching circuit further comprises: A high-frequency excitation identification circuit for detecting whether the high-frequency generator device outputs a high-frequency excitation signal, and generating a corresponding sensing signal according to the detected high-frequency excitation signal; A controller, the input end of the controller is connected with the output end of the high-frequency excitation identification circuit, for determining whether the high-frequency generator device outputs the high-frequency excitation signal according to the sensing signal, and generating a function switching signal in the case that it is determined that the high-frequency generator device does not output the high-frequency excitation signal; The nerve monitoring switching circuit controls the controllable connection end of the relay to be electrically connected with the normally open connection end in response to the function switching signal.

8. The extension device of claim 7, wherein, The extension device further comprises a first prompting circuit, the first prompting circuit is connected with the controller; The controller is further used for generating a first prompting signal in the case that it is determined that the high-frequency generator device does not output the high-frequency excitation signal. The first prompting circuit is configured to generate first prompting information in response to the first prompting signal, the first prompting information being used to instruct the surgical device to switch to a nerve monitoring function.

9. The extension device of claim 8, wherein, The extension device further comprises a second prompting circuit connected with the controller. The controller is further configured to generate a second prompting signal in a case where it is determined that the high-frequency generator device outputs the high-frequency excitation signal. The second prompting circuit is configured to generate second prompting information in response to the second prompting signal, the second prompting information being used to instruct the surgical device to switch to a coagulation and cutting function.

10. The extension device of claim 1, wherein, The extension device further comprises a power supply device connected with the function switching circuit, configured to supply power for the function switching circuit, and the power supply device is arranged in the base.

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