Intelligent water pump shutdown device and high-frequency energy output surgical equipment

Abstract

The utility model provides a kind of water pump intelligent shutdown device and high-frequency energy output surgical equipment, in water pump intelligent shutdown device, the input end of signal processing circuit is connected with sensor, the output end of signal processing circuit is connected with the cathode of diode, the anode of diode is connected with water pump power supply through manual switch circuit, water pump power supply is connected with water pump through controlled switch circuit, and the anode of diode is connected with the signal input end of controlled switch circuit;When sensor detects high-frequency energy, the output end of signal processing circuit is low level, after manual switch circuit conduction, diode anode side is low level, controlled switch circuit keeps off, prevents water pump work;When sensor does not detect high-frequency energy, the output end of signal processing circuit is high level, after manual switch circuit conduction, diode anode side is high level, controlled switch circuit conduction, water pump works. Realize the exclusive use of high-frequency electrotome coagulation cutting function and water injection function.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a water pump intelligent shutdown device and a high-frequency energy output surgical device. Background Technology

[0002] A high-frequency electrosurgical unit (HFEMU) is an electrosurgical instrument that replaces mechanical scalpels for tissue cutting. It heats tissue by generating a high-frequency, high-voltage current at the tip of its effective electrode, achieving tissue separation and coagulation, thus achieving cutting and hemostasis. During use, a suitable neutral electrode plate is required. This plate is attached to a muscle-rich area of ​​the patient, guiding the current collected within the body back to the HFEMU and other instruments, forming a complete high-frequency circuit. This disperses the current during high-frequency surgery, reducing the risk of current concentration, safely collecting and delivering the current to the outside of the body, and protecting the patient's safety.

[0003] The operation of high-frequency energy output surgical equipment generally includes a high-frequency energy output process and a water injection process. High-frequency energy output is used for electrocoagulation or electroresection of tissue, while water injection is used to inject medical fluid submucosally to elevate the lesion, thereby facilitating its removal. It is also used to irrigate bleeding sites. To ensure the safe and stable output of high-frequency energy, water injection cannot be performed during high-frequency energy output; that is, high-frequency energy output and water injection are mutually exclusive.

[0004] Current high-frequency energy output surgical devices generally come in two forms: 1. A separate water injection device and a separate high-frequency energy output device; 2. An integrated water injection device and high-frequency energy output device. For the first type, two operators are typically required: one operates the water injection device, and the other operates the high-frequency energy output device. The two operators switch between high-frequency energy output and water injection as needed for the surgery. For the second type, only one operator is required. The operator presses a button on the device to switch between high-frequency energy output and water injection as needed. However, in the use of both types of high-frequency energy output surgical devices, operator error is possible, resulting in simultaneous high-frequency energy output and water injection, leading to adverse surgical outcomes.

[0005] Therefore, there is an urgent need for an intelligent pump shutdown device and a water-injection high-frequency electrosurgical unit. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a water pump intelligent shutdown device and a high-frequency energy output surgical device to realize the mutually exclusive use of high-frequency electrosurgical coagulation and water injection functions.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] In a first aspect, this utility model provides an intelligent water pump shutdown device, including a signal processing circuit, a diode, a manual switch circuit, a water pump power supply, a controlled switch circuit, a water pump, and a sensor for detecting high-frequency energy output from a shearing cable. The input terminal of the signal processing circuit is connected to the sensor, and the output terminal of the signal processing circuit is connected to the cathode of the diode. The anode of the diode is connected to the water pump power supply through the manual switch circuit, and the water pump power supply is connected to the water pump through the controlled switch circuit. The anode of the diode is also connected to the signal input terminal of the controlled switch circuit. When the sensor detects high-frequency energy, the output terminal of the signal processing circuit is at a low level. After the manual switch circuit is turned on, the anode side of the diode is at a low level, and the controlled switch circuit remains open, preventing the water pump from operating. When the sensor does not detect high-frequency energy, the output terminal of the signal processing circuit is at a high level. After the manual switch circuit is turned on, the anode side of the diode is at a high level, the controlled switch circuit is turned on, and the water pump operates.

[0011] Optionally, the sensor includes a coil wound around the outer periphery of a high-frequency electrosurgical cutting cable, and the input terminal of the signal processing circuit is connected to both ends of the coil.

[0012] Optionally, the signal processing circuit includes a comparator and a rectifier circuit. The inverting input of the comparator is connected to the sensor through the rectifier circuit, the non-inverting input of the comparator is connected to a reference circuit for providing a reference voltage, and the output of the comparator is connected to the cathode of the diode.

[0013] Optionally, the rectifier circuit includes a first resistor, a first parallel circuit, and a rectifier bridge. The first input terminal of the rectifier bridge is connected to the first end of the coil, and the second input terminal of the rectifier bridge is connected to the second end of the coil. The first end of the first resistor is connected to the first end of the coil, and the second end of the first resistor is connected to the second end of the coil. The first parallel circuit includes a second resistor and a Zener diode connected in parallel. The positive terminal of the rectifier bridge is connected to the first end of the first parallel circuit, and the negative terminal of the rectifier bridge is connected to the second end of the first parallel circuit. The positive terminal of the rectifier bridge is connected to the negative input terminal of the comparator, and the negative terminal of the rectifier bridge is connected to the positive input terminal of the comparator through a reference circuit.

[0014] Optionally, the reference circuit includes a reference voltage source, which is grounded through a third resistor and a fourth resistor connected in series, and the inverting input of the comparator is connected between the third resistor and the fourth resistor.

[0015] Optionally, the reference circuit also includes a fifth resistor, the first end of which is connected to a reference voltage source, and the second end of which is connected to the output of the comparator.

[0016] Optionally, the manual switch circuit includes a sixth resistor and a manual switch connected in series, and the water pump power supply is connected to the anode of the diode through the sixth resistor and the manual switch connected in series.

[0017] Optionally, the controlled switch circuit includes a controlled switch and a seventh resistor. The first end of the seventh resistor is connected to the anode of the diode, the second end of the seventh resistor is connected to the signal input terminal of the controlled switch, the current input terminal of the controlled switch is connected to the power supply of the water pump, and the current output terminal of the controlled switch is connected to the water pump.

[0018] Secondly, this utility model provides a high-frequency energy output surgical device, including a high-frequency energy output device and a water pump intelligent shutdown device as described above. The high-frequency energy output device includes a working mode button, a first wire, a high-frequency energy host, a second wire, and an electrode. The working mode button is electrically connected to the high-frequency energy host through the first wire, and the high-frequency energy host is connected to the electrode through the second wire. A sensor detects the high-frequency energy output by the first wire.

[0019] Optionally, the electrode is tubular, and the outlet pipe of the water pump is connected to the electrode.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are:

[0022] The intelligent pump shutdown device provided by this utility model has the following characteristics: When the manual switch circuit is open, regardless of whether the cutting cable outputs high-frequency energy, the anode side of the diode remains at a low level. The controlled switch circuit receives the low-level signal output by the manual switch circuit and remains in the open state, preventing the pump from operating. When the manual switch circuit is on and the cutting cable is not outputting high-frequency energy, the output of the signal processing circuit is high, and the anode side of the diode also remains at a high level. The controlled switch circuit receives the high-level signal output by the manual switch circuit and becomes on, allowing the pump to operate. When the manual switch circuit is on and the cutting cable outputs high-frequency energy, the output of the signal processing circuit is low, and the anode side of the diode also becomes low. The controlled switch circuit receives the low-level signal output by the manual switch circuit and becomes off, preventing the pump from operating and achieving automatic pump shutdown. Therefore, when the high-frequency electrosurgical unit is in the cutting mode, regardless of whether the manual switch circuit is on or off, the controlled switch circuit remains in the open state, preventing the pump from operating and achieving mutual exclusion of the high-frequency electrosurgical unit's cutting and water injection functions. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the circuit structure of the intelligent pump shutdown device according to Embodiment 1.

[0024] Explanation of reference numerals in the attached figures

[0025] SW1: Manual switch; SW2: Controlled switch;

[0026] U1: Comparator;

[0027] R1: First resistor; R2: Second resistor; R3: Third resistor; R4: Fourth resistor; R5: Fifth resistor; R6: Sixth resistor; R7: Seventh resistor;

[0028] D1: Rectifier bridge; D2: Diode;

[0029] ZD1: Zener diode;

[0030] L: coil;

[0031] I: Condensed cable;

[0032] M: Water pump;

[0033] Vcc1: Reference voltage source;

[0034] Vcc2: Water pump power supply. Detailed Implementation

[0035] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Example 1

[0037] like Figure 1 As shown, this embodiment provides a smart pump shutdown device, including a signal processing circuit, a diode D2, a manual switch circuit, a pump power supply Vcc2, a controlled switch circuit, a pump M, and a sensor for detecting the high-frequency energy output of the shearing cable I. The input terminal of the signal processing circuit is connected to the sensor, and the output terminal of the signal processing circuit is connected to the cathode of the diode D2. The anode of the diode D2 is connected to the pump power supply Vcc2 through the manual switch circuit. The pump power supply Vcc2 is connected to the pump M through the controlled switch circuit, and the anode of the diode D2 is connected to the signal input terminal of the controlled switch circuit. When the sensor detects high-frequency energy, the output terminal of the signal processing circuit is at a low level. After the manual switch circuit is turned on, the anode side of the diode D2 is at a low level, and the controlled switch circuit remains open, preventing the pump M from working. When the sensor does not detect high-frequency energy, the output terminal of the signal processing circuit is at a high level. After the manual switch circuit is turned on, the anode side of the diode D2 is at a high level, the controlled switch circuit is turned on, and the pump M works.

[0038] Among them, the coagulation cable I is a cable used to supply power to the electrodes of the high-frequency electrosurgical unit.

[0039] With this intelligent pump shutdown device, when the manual switch circuit is open, regardless of whether the shearing cable I outputs high-frequency energy, the anode side of the diode remains at a low level. The controlled switch circuit receives the low-level signal output by the manual switch circuit and remains in the open state, preventing the water pump M from operating. When the manual switch circuit is on and the shearing cable I is not outputting high-frequency energy, the anode side of the diode D2 also remains at a high level because the output of the signal processing circuit is high. The controlled switch circuit receives the high-level signal output by the manual switch circuit and becomes on, allowing the water pump M to operate. When the manual switch circuit is on and the shearing cable I outputs high-frequency energy, the anode side of the diode D2 also becomes low because the output of the signal processing circuit is low. The controlled switch circuit receives the low-level signal output by the manual switch circuit and becomes off, preventing the water pump M from operating and achieving automatic shutdown of the water pump M. It is evident that when the high-frequency electrosurgical unit is in the coagulation cutting mode, the controlled switch circuit remains in the off state regardless of whether the manual switch circuit is on or off, preventing the water pump M from operating and thus achieving the mutual exclusion of the high-frequency electrosurgical unit's coagulation cutting function and water injection function.

[0040] Preferably, in this embodiment, the sensor includes a coil L, which is wound around the outer periphery of the high-frequency electrosurgical cutting cable I. The input terminal of the signal processing circuit is connected to both ends of the coil L. Thus, the high-frequency energy output by the cutting cable I can be detected by the induced voltage generated by the coil L.

[0041] Preferably, the signal processing circuit includes a comparator U1 and a rectifier circuit. The inverting input of the comparator U1 is connected to the coil L through the rectifier circuit, the non-inverting input of the comparator U1 is connected to a reference circuit for providing a reference voltage, and the output of the comparator U1 is connected to the cathode of the diode D2. Thus, when the shearing cable I outputs high-frequency energy, the coil L generates an induced voltage. This induced voltage is rectified by the rectifier circuit to obtain a DC voltage. The DC voltage and the reference voltage are input to the inverting and non-inverting inputs of the comparator U1, respectively. When the shearing cable I has no high-frequency energy output, the DC voltage amplitude is zero, and the comparator U1 outputs a high level. When the shearing cable I has high-frequency energy output, the DC voltage has a certain amplitude, and the comparator U1 outputs a low level. The high and low level signals output by the comparator U1 are then used to control the opening and closing of the controlled switch circuit.

[0042] More preferably, in this embodiment, the rectifier circuit includes a first resistor R1, a first parallel circuit, and a rectifier bridge D1. The first input terminal of the rectifier bridge D1 is connected to the first terminal of the coil L, and the second input terminal of the rectifier bridge D1 is connected to the second terminal of the coil L. The first terminal of the first resistor R1 is connected to the first terminal of the coil L, and the second terminal of the first resistor R1 is connected to the second terminal of the coil L. The first parallel circuit includes a second resistor R2 and a Zener diode ZD1 connected in parallel. The positive terminal of the rectifier bridge D1 is connected to the first terminal of the first parallel circuit, and the negative terminal of the rectifier bridge D1 is connected to the second terminal of the first parallel circuit. The positive terminal of the rectifier bridge D1 is connected to the negative input terminal of the comparator U1, and the negative terminal of the rectifier bridge D1 is connected to the positive input terminal of the comparator U1 through a reference circuit. Thus, the arrangement of the first resistor R1 and the first parallel circuit makes the DC voltage output by the rectifier bridge D1 more stable and able to remain within a safe and reasonable range.

[0043] Preferably, the reference circuit includes a reference voltage source Vcc1, which is grounded through a third resistor R3 and a fourth resistor R4 connected in series. The inverting input of comparator U1 is connected between the third resistor R3 and the fourth resistor R4, and the negative terminal of rectifier bridge D1 is connected to the non-inverting input of comparator U1 through the fourth resistor R4. Thus, the reference voltage is obtained by voltage division through the third resistor R3 and the fourth resistor R4.

[0044] Preferably, the signal processing circuit further includes a fifth resistor R5. The first end of the fifth resistor R5 is connected to the reference voltage source Vcc1, and the second end of the fifth resistor R5 is connected to the output terminal of comparator U1. In this way, the fifth resistor R5 provides a pull-up effect and current limiting protection for the output of comparator U1, which is beneficial to the output accuracy and stability of comparator U1.

[0045] Furthermore, the positive power supply terminal of comparator U1 is connected to the reference voltage source Vcc1, and the negative power supply terminal of comparator U1 is grounded. In this way, power is supplied to comparator U1.

[0046] It should be noted that in this embodiment, when the manual switch circuit is on and the shearing cable I outputs high-frequency energy, the cathode side of diode D2 is at a low level. Because diode D2 is on, the anode side of diode D2 is also pulled low. The controlled switch circuit receives the low-level signal from the manual switch circuit, and the controlled switch circuit is turned off, preventing water pump M from operating and achieving automatic shutdown of water pump M. When the manual switch circuit is on and the shearing cable I does not output high-frequency energy, the cathode side of diode D2 is at a high level. Because diode D2 is off, the anode side of diode D2 also remains at a high level. The controlled switch circuit receives the high-level signal from the manual switch circuit, and the controlled switch circuit is turned on, allowing water pump M to operate.

[0047] Preferably, the manual switch circuit includes a sixth resistor R6 and a manual switch SW1 connected in series, and the water pump power supply Vcc2 is connected to the anode of diode D2 through the sixth resistor R6 and the manual switch SW1.

[0048] Preferably, the controlled switch circuit includes a controlled switch SW2 and a seventh resistor R7. The first end of the seventh resistor R7 is connected to the anode of diode D2, the second end of the seventh resistor R7 is connected to the signal input terminal of the controlled switch SW2, the current input terminal of the controlled switch SW2 is connected to the water pump power supply Vcc2, and the output terminal of the controlled switch SW2 is connected to the water pump M. With this configuration, when diode D2 is conducting, after manual switch SW1 is closed, the high-level signal flows through diode D2 from the output terminal of comparator U1 to the negative power supply terminal of comparator U1, grounding it. At this time, controlled switch SW2 receives a low-level signal from the manual switch circuit, and the controlled switch circuit is open. When diode D2 is off, the high-level signal from the manual switch circuit can only flow through the controlled switch circuit, and controlled switch SW2 can receive the high-level signal from the manual switch circuit, and the controlled switch circuit is turned on.

[0049] Specifically, the current output terminal of the controlled switch SW2 is connected to the current input terminal of the water pump M, and the current output terminal of the water pump M is grounded.

[0050] Example 2

[0051] This embodiment provides a high-frequency energy output surgical device, including a high-frequency energy output device and a water pump intelligent shutdown device as described in Embodiment 1. The high-frequency energy output device includes a working mode button, a first wire, a high-frequency energy host, a second wire, and an electrode. The working mode button is electrically connected to the high-frequency energy host through the first wire, and the high-frequency energy host is connected to the electrode through the second wire. A coil L is wound on the first wire.

[0052] Preferably, the electrode is tubular, and the outlet pipe of the water pump M is connected to the electrode.

[0053] Preferably, the working mode buttons include an electric cutting button and an electric coagulation button.

[0054] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0056] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A smart pump shutdown device, characterized in that, It includes a signal processing circuit, a diode (D2), a manual switch circuit, a water pump power supply (Vcc2), a controlled switch circuit, a water pump (M), and a sensor for detecting the high-frequency energy output of the shearing cable (I); The input terminal of the signal processing circuit is connected to the sensor, the output terminal of the signal processing circuit is connected to the cathode of the diode (D2), the anode of the diode (D2) is connected to the water pump power supply (Vcc2) through a manual switch circuit, the water pump power supply (Vcc2) is connected to the water pump (M) through a controlled switch circuit, and the anode of the diode (D2) is connected to the signal input terminal of the controlled switch circuit. When the sensor detects high-frequency energy, the output of the signal processing circuit is low. After the manual switch circuit is turned on, the anode side of the diode (D2) is low, and the controlled switch circuit remains open, preventing the water pump (M) from working. When the sensor does not detect high-frequency energy, the output of the signal processing circuit is high. After the manual switch circuit is turned on, the anode side of the diode (D2) is high, the controlled switch circuit is turned on, and the water pump (M) works.

2. The intelligent pump shutdown device according to claim 1, characterized in that, The sensor includes a coil (L) wound around the outer periphery of a high-frequency electrosurgical cutting cable (I), and the input terminal of the signal processing circuit is connected to both ends of the coil (L).

3. The intelligent pump shutdown device according to claim 1, characterized in that, The signal processing circuit includes a comparator (U1) and a rectifier circuit. The inverting input of the comparator (U1) is connected to the sensor through the rectifier circuit, the non-inverting input of the comparator (U1) is connected to the reference circuit for providing a reference voltage, and the output of the comparator (U1) is connected to the cathode of the diode (D2).

4. The intelligent pump shutdown device according to claim 3, characterized in that, The rectifier circuit includes a first resistor (R1), a first parallel circuit, and a rectifier bridge (D1). The first input terminal of the rectifier bridge (D1) is connected to the first terminal of the coil (L), and the second input terminal of the rectifier bridge (D1) is connected to the second terminal of the coil (L). The first terminal of the first resistor (R1) is connected to the first terminal of the coil (L), and the second terminal of the first resistor (R1) is connected to the second terminal of the coil (L). The first parallel circuit includes a second resistor (R2) and a Zener diode (ZD1) connected in parallel. The positive terminal of the rectifier bridge (D1) is connected to the first terminal of the first parallel circuit, and the negative terminal of the rectifier bridge (D1) is connected to the second terminal of the first parallel circuit. The positive terminal of the rectifier bridge (D1) is connected to the negative input terminal of the comparator (U1), and the negative terminal of the rectifier bridge (D1) is connected to the positive input terminal of the comparator (U1) through a reference circuit.

5. The intelligent pump shutdown device according to claim 1, characterized in that, The reference circuit includes a reference voltage source (Vcc1), which is grounded through a third resistor (R3) and a fourth resistor (R4) connected in series. The inverting input of the comparator (U1) is connected between the third resistor (R3) and the fourth resistor (R4).

6. The intelligent pump shutdown device according to claim 5, characterized in that, The reference circuit also includes a fifth resistor (R5), the first end of which is connected to the reference voltage source (Vcc1), and the second end of which is connected to the output of the comparator (U1).

7. The intelligent pump shutdown device according to claim 1, characterized in that, The manual switch circuit includes a sixth resistor (R6) and a manual switch (SW1) connected in series. The water pump power supply (Vcc2) is connected to the anode of the diode (D2) through the sixth resistor (R6) and the manual switch (SW1).

8. The intelligent pump shutdown device according to claim 1, characterized in that, The controlled switch circuit includes a controlled switch (SW2) and a seventh resistor (R7). The first terminal of the seventh resistor (R7) is connected to the anode of the diode (D2), the second terminal of the seventh resistor (R7) is connected to the signal input terminal of the controlled switch (SW2), the current input terminal of the controlled switch (SW2) is connected to the water pump power supply (Vcc2), and the current output terminal of the controlled switch (SW2) is connected to the water pump (M).

9. A high-frequency energy output surgical device, characterized in that, The device includes a high-frequency energy output device and a water pump intelligent shutdown device as described in any one of claims 1 to 8. The high-frequency energy output device includes a working mode button, a first wire, a high-frequency energy host, a second wire, and an electrode. The working mode button is electrically connected to the high-frequency energy host through the first wire, the high-frequency energy host is connected to the electrode through the second wire, and a sensor detects the high-frequency energy output by the first wire.

10. The high-frequency energy output surgical device according to claim 9, characterized in that, The electrode is tubular, and the outlet pipe of the water pump (M) is connected to the electrode.

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