Ultrasonic surgical instrument with a cutter head button that can be pressed simultaneously

Abstract

The present invention provides an ultrasonic surgical instrument having a cutter head button that can be pressed simultaneously, comprising: a main body of the ultrasonic surgical instrument, including a first signal terminal, a first ground terminal, a voltage transformer, and a signal detection circuit; a cutter head, including a second signal terminal and a second ground terminal, wherein the second signal terminal and the first signal terminal induce a voltage signal through the voltage transformer, and the second ground terminal is connected to the first ground terminal; a first switch, having a first connection state and a second connection state; a second switch, having a third connection state and a fourth connection state; when the first switch is in the second connection state and the second switch is in the fourth connection state, the second signal circuit is turned on, the second signal terminal generates the third signal, the first signal terminal senses the third signal, and transmits the third signal to the signal detection circuit. When both switches are turned on simultaneously, it operates in a low power mode.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and further relates to ultrasonic surgical instruments, and particularly relates to an ultrasonic surgical instrument having a cutter head button that can be pressed simultaneously. Background Art

[0002] The present invention relates to the field of energy surgical operations of medical devices. Specifically, it is an ultrasonic surgical cutting instrument, hereinafter referred to as an ultrasonic scalpel. The main function of the ultrasonic scalpel is to achieve minimal thermal damage while realizing soft tissue cutting, such as Figure 1 As shown, it is the composition of each system of the ultrasonic scalpel in the prior art, including an operating head, a cutter head, a transducer handle, and a power supply host.

[0003] The existing ultrasonic scalpel mainly realizes the following technologies:

[0004] There are several different gears, and each gear represents a different power level. Through two hand control buttons on the cutter head, high power levels and adjustable power levels can be selected for operation;

[0005] With the popularization of the application of ultrasonic scalpel technology, the existing ultrasonic scalpel has exposed the following deficiencies:

[0006] There are two upper and lower buttons on the cutter head. Generally, the upper button is the highest working gear for cutting tissues, and the lower button is an adjustable working gear, and a low gear can be selected for hemostasis. When the operator uses the ultrasonic scalpel for cutting, due to the limited space on the cutter head and the close distance between the two control buttons on the cutter head, it is possible to accidentally press the two control buttons on the cutter head simultaneously. There are two solutions in the prior art. One is that after pressing the two control buttons simultaneously, the cutter head will stop working. The other is that when accidentally pressing the two control buttons, only one button can be pressed, that is, a button with a seesaw structure, but the button pressed may not be the button that the doctor needs to press. For these two solutions of the prior art, for the one where pressing the two control buttons simultaneously causes the cutter head to stop working, it will waste surgical time; for the other where only one button can be pressed but may not be the required button, there may be a risk that when the operator wants to close a blood vessel, it is working at a high gear, resulting in the inability to close the blood vessel and bleeding.

[0007] Therefore, the technical problem existing in the prior art is that there is no safe and time-saving solution for the existing ultrasonic scalpel system when pressing the two buttons simultaneously. Summary of the Invention

[0008] The present invention provides an ultrasonic surgical instrument having a cutter head button that can be pressed simultaneously to at least solve the technical problem of surgical risks caused by the inability to press the two buttons simultaneously in the prior art.

[0009] The present invention provides an ultrasonic surgical instrument with a cutter head button that can be pressed simultaneously, including:

[0010] The main body of the above ultrasonic surgical instrument includes a first signal terminal, a first grounding terminal, a voltage transformer, and a signal detection circuit;

[0011] The cutter head includes a second signal terminal and a second grounding terminal. The second signal terminal and the first signal terminal induce a voltage signal through the voltage transformer, and the second grounding terminal is connected to the first grounding terminal;

[0012] The first switch has a first connection state and a second connection state;

[0013] The second switch has a third connection state and a fourth connection state;

[0014] When the first switch is in the first connection state and the second switch is in the third connection state, the first signal terminal outputs a first signal, the second signal terminal induces the first signal, and transmits the first signal to the signal detection circuit;

[0015] When the first switch is in the first connection state and the second switch is in the fourth connection state, the first signal circuit is turned on, the second signal terminal generates a second signal, the first signal terminal induces the second signal, and transmits the second signal to the signal detection circuit;

[0016] When the first switch is in the second connection state and the second switch is in the third connection state, the second signal circuit is turned on, the second signal terminal generates a third signal, the first signal terminal induces the third signal, and transmits the third signal to the signal detection circuit;

[0017] When the first switch is in the second connection state and the second switch is in the fourth connection state, the second signal circuit is turned on, the second signal terminal generates the third signal, the first signal terminal induces the third signal, and transmits the third signal to the signal detection circuit.

[0018] Optionally, the second signal terminal and the first signal terminal mutually induce a voltage signal with a ratio of 1:1 through the voltage transformer.

[0019] Optionally, the second signal terminal is a signal input / output port, the second grounding terminal is a grounding terminal, and a double diode is connected between the signal input / output port and the grounding terminal;

[0020] When the first switch is in the first connection state and the second switch is in the third connection state, the first signal terminal outputs a first signal, the second signal terminal senses the first signal and transmits the first signal to the signal detection circuit, and both of the double diodes are in the off state;

[0021] When the first switch is in the first connection state and the second switch is in the fourth connection state, the first signal circuit is turned on, the second signal terminal generates a second signal, the first signal terminal senses the second signal and transmits the second signal to the signal detection circuit, and the double diodes are turned on in the first signal circuit;

[0022] When the first switch is in the second connection state and the second switch is in the third connection state, the second signal circuit is turned on, the second signal terminal generates a third signal, the first signal terminal senses the third signal and transmits the third signal to the signal detection circuit, and the double diodes are turned on in the second signal circuit;

[0023] When the first switch is in the second connection state and the second switch is in the fourth connection state, the second signal circuit is turned on, the second signal terminal generates the third signal, the first signal terminal senses the third signal and transmits the third signal to the signal detection circuit, and the double diodes are turned on in the second signal circuit.

[0024] Optionally, the first switch is a single-pole double-throw switch, the single-pole double-throw switch includes a moving contact, a low-power static contact, and a high-power static contact, the first connection state is the connection state of the moving contact and the high-power static contact, and the second connection state is the connection state of the moving contact and the low-power static contact.

[0025] Optionally, the second switch is a switch, the third connection state is the off state of the switch, and the fourth connection state is the on state of the switch.

[0026] Optionally, the low-power static contact is connected in series with the double diode that is turned on in the second signal circuit;

[0027] The high-power static contact is connected in series with the double diode that is turned on in the first signal circuit, and the high-power static contact is also connected in series with the switch.

[0028] Optionally, the above ultrasonic surgical instrument further includes a button printed circuit board, an inner conductive ring, an outer conductive ring, and a conductive ring fixing seat. The inner conductive ring and the outer conductive ring are fixed on the conductive ring fixing seat. The button printed circuit board is welded to the inner conductive ring and the outer conductive ring. The signal input / output port and the ground terminal are located on the button printed circuit board. The signal input / output port is welded to the inner conductive ring, and the ground terminal is welded to the outer conductive ring.

[0029] Optionally, the above ultrasonic surgical instrument further includes a transducer handle. After the tool head is connected to the transducer handle, the inner conductive ring corresponds to the signal output terminal of the host through the voltage transformer of the host. The signal output terminal of the host is provided with a signal detection circuit. The signal output by the signal output terminal of the host is inductively coupled to the signal input / output port by the voltage transformer of the host at a ratio of 1:1.

[0030] Optionally, when the second switch is turned on, it operates at a high gear; when the first switch is turned on, it operates at a low gear; when both the second switch and the first switch are turned on simultaneously, it operates at a low gear.

[0031] Optionally, the first switch and the second switch in the tool head button of the above ultrasonic surgical instrument can be turned on simultaneously.

[0032] In view of the above deficiencies in the prior art, the present invention provides an ultrasonic surgical instrument with a tool head button that can be pressed simultaneously. A button is designed inside the tool head button to control the excitation of the tool head. When the two switches of the tool head are pressed simultaneously, the tool head will operate at a low-power gear. This invention can not only enable the tool head to work normally and save surgical time, but also provide a certain degree of safety guarantee. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present invention will become readily understood. In the drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, wherein:

[0034] Figure 1 is a schematic diagram of the composition of each system of an optional ultrasonic scalpel in the prior art provided by an embodiment of the present invention;

[0035] Figure 2 is a schematic diagram of an optional internal structure of the tool head provided by an embodiment of the present invention;

[0036] Figure 3-1 is a schematic diagram of a partially enlarged internal structure of the tool head showing the card slot of the button printed circuit board pcb provided by an embodiment of the present invention;

[0037] Figure 3-2 A schematic diagram of a partially enlarged internal structure of the tool head that optionally embodies button limit provided by an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of a button printed circuit board (PCB) that optionally includes two elastic pieces provided by an embodiment of the present invention;

[0039] Figure 5 A schematic diagram of the circuit principle of a button printed circuit board (PCB) provided by an embodiment of the present invention.

[0040] Reference numerals:

[0041] Upper button MAX, lower button MIN, button printed circuit board pcb, single-pole double-throw switch S1, switch S2, double diodes Diode-A and Diode-B, signal input / output port IO, ground terminal Com, moving contact 1, low-power static contact 2, high-power static contact 3, upper button elastic piece 4, lower button elastic piece 5, inner conductive ring 6, outer conductive ring 7, conductive ring fixing seat 8, tool head housing 9, upper button mounting post MAX1, lower button mounting post MIN1, upper button limit MAX2, upper button limit MAX3, lower button limit MIN2, lower button limit MIN3, slots 91, 92 of the button printed circuit board pcb. Detailed implementation manners

[0042] The principles and spirit of the present invention will be described below with reference to several exemplary implementation manners. It should be understood that these implementation manners are provided only to enable those skilled in the art to better understand and then implement the present invention, and do not limit the scope of the present invention in any way. On the contrary, these implementation manners are provided to make the disclosure of the present application more thorough and complete, and to be able to fully convey the scope of the disclosure of the present application to those skilled in the art.

[0043] As shown in this embodiment Figures 2 to 5 Shown.

[0044] An embodiment of the present invention provides an ultrasonic surgical instrument with a tool head button that can be pressed simultaneously, including:

[0045] The host of the above ultrasonic surgical instrument, including a first signal terminal, a first ground terminal, a voltage transformer, and a signal detection circuit;

[0046] The tool head, including a second signal terminal and a second ground terminal, the second signal terminal is inductively coupled with the first signal terminal through a voltage transformer, and the second ground terminal is connected to the first ground terminal;

[0047] The first switch, having a first connection state and a second connection state;

[0048] The second switch, having a third connection state and a fourth connection state;

[0049] When the first switch is in the first connection state and the second switch is in the third connection state, the first signal terminal outputs a first signal, the second signal terminal senses the first signal, and transmits the first signal to the signal detection line;

[0050] When the first switch is in the first connection state and the second switch is in the fourth connection state, the first signal line is conducting, the second signal terminal generates a second signal, the first signal terminal senses the second signal, and transmits the second signal to the signal detection line;

[0051] When the first switch is in the second connection state and the second switch is in the third connection state, the second signal line is conducting, the second signal terminal generates a third signal, the first signal terminal senses the third signal, and transmits the third signal to the signal detection line;

[0052] When the first switch is in the second connection state and the second switch is in the fourth connection state, the second signal line is conducting, the second signal terminal generates the third signal, the first signal terminal senses the third signal, and transmits the third signal to the signal detection line.

[0053] Furthermore, the second signal terminal and the first signal terminal mutually sense voltage signals with a ratio of 1:1 through a voltage transformer.

[0054] Furthermore, the second signal terminal is a signal input / output port IO, the second grounding terminal is a grounding terminal Com, and a double diode Diode-A / Diode-B is connected between the signal input / output port IO and the grounding terminal Com;

[0055] When the first switch is in the first connection state and the second switch is in the third connection state, the first signal terminal outputs a first signal, the second signal terminal senses the first signal, and transmits the first signal to the signal detection line, and both of the double diodes Diode-A / Diode-B are in an off state;

[0056] When the first switch is in the first connection state and the second switch is in the fourth connection state, the first signal line is conducting, the second signal terminal generates a second signal, the first signal terminal senses the second signal, and transmits the second signal to the signal detection line, and the double diode Diode-B conducts in the first signal line;

[0057] When the first switch is in the second connection state and the second switch is in the third connection state, the second signal line is conducting, the second signal terminal generates a third signal, the first signal terminal senses the third signal and transmits the third signal to the signal detection line, and the double diode Diode-A conducts in the second signal line;

[0058] When the first switch is in the second connection state and the second switch is in the fourth connection state, the second signal line is conducting, the second signal terminal generates the third signal, the first signal terminal senses the third signal and transmits the third signal to the signal detection line, and the double diode Diode-A conducts in the second signal line.

[0059] Further, the first switch is a single-pole double-throw switch S1. The single-pole double-throw switch S1 includes a moving contact 1, a low-power static contact 2, and a high-power static contact 3. The first connection state is the connection state between the moving contact 1 and the high-power static contact 3, and the second connection state is the connection state between the moving contact 1 and the low-power static contact 2.

[0060] Further, the second switch is a switch S2. The third connection state is the open state of the switch S2, and the fourth connection state is the conducting state of the switch S2.

[0061] Further, the low-power static contact 2 is in series with the double diode that conducts in the second signal line;

[0062] The high-power static contact 3 is in series with the double diode that conducts in the first signal line, and the high-power static contact 3 is also in series with the switch S2.

[0063] When the second switch is turned on, it operates at a high gear; when the first switch is turned on, it operates at a low gear; when both the second switch and the first switch are turned on, it operates at a low gear.

[0064] The first switch and the second switch in the tool button of the ultrasonic surgical instrument can be turned on simultaneously.

[0065] More specifically, the tip button of the above ultrasonic surgical instrument includes an upper button MAX, a lower button MIN, and a button printed circuit board pcb. The button printed circuit board pcb includes a single-pole double-throw switch S1, a switch S2, and two diodes (Diode-A and Diode-B). The switch S2 corresponds to the upper button MAX. The single-pole double-throw switch S1 includes two connection ports, one of the connection ports corresponds to the lower button MIN, and the other connection port is in series with the switch S2 corresponding to the upper button MAX. The switch S2 corresponding to the upper button MAX is in series with Diode-B in the two diodes, and one of the connection ports corresponding to the lower button MIN is in series with Diode-A in the two diodes.

[0066] Furthermore, the two connection ports included in the single-pole double-throw switch S1 are a low-power stationary contact 2 and a high-power stationary contact 3. The single-pole double-throw switch S1 further includes a moving contact 1. The low-power stationary contact 2 is in series with Diode-A in the two diodes, and the high-power stationary contact 3 is in series with the switch S2 corresponding to the upper button MAX and is also in series with Diode-B in the two diodes.

[0067] Furthermore, in the normal state, the moving contact 1 of the single-pole double-throw switch S1 is always conducting with the high-power stationary contact 3. The button printed circuit board pcb further includes an upper button spring plate 4 and a lower button spring plate 5. The upper button spring plate 4 and the lower button spring plate 5 are respectively fixed on the switch S2 and the single-pole double-throw switch S1 on the button printed circuit board pcb. The upper button spring plate 4 corresponds to the upper button MAX, and the lower button spring plate 5 corresponds to the lower button MIN.

[0068] Furthermore, when the upper button MAX is pressed, the corresponding upper button spring plate 4 is also pressed simultaneously, so that the switch S2 corresponding to the upper button MAX is in a closed and conducting state. The moving contact 1 of the single-pole double-throw switch S1 is conducting with the high-power stationary contact 3. One end of Diode-B in the two diodes close to the ground terminal Com is the positive electrode of the diode, and the other end is the negative electrode. The ground terminal Com is at 0 potential, and the signal input / output port IO is at a low potential (0-), enabling Diode-B in the series-connected two diodes to start working. At this time, the signal input / output port IO transmits a working signal at the highest power level.

[0069] Further, when the upper button MAX is not pressed and only the lower button MIN is pressed, the moving contact 1 of the single-pole double-throw switch S1 is disconnected from the high-power stationary contact 3 and conducts with the low-power stationary contact 2. One end of Diode-A in the double diode, which is closer to the ground terminal Com, is the cathode of the diode, and the other end is the anode. The ground terminal Com is at 0 potential, and the signal input / output port IO is at a high potential, causing Diode-A in the series-connected double diode to start operating. At this time, the signal input / output port IO transmits a working signal with an adjustable power level.

[0070] Further, when the upper button MAX and the lower button MIN are pressed simultaneously, the upper button elastic piece 4 and the lower button elastic piece 5 are also pressed simultaneously. The switch S2 is in a closed and conducting state. The moving contact 1 of the single-pole double-throw switch S1 is disconnected from the high-power stationary contact 3 and conducts with the low-power stationary contact 2. One end of Diode-A in the double diode, which is closer to the ground terminal Com, is the cathode of the diode, and the other end is the anode. The ground terminal Com is at 0 potential, and the signal input / output port IO is at a high potential, causing Diode-A in the series-connected double diode to start operating. At this time, the signal input / output port IO transmits a working signal with an adjustable power level.

[0071] Further, the ultrasonic surgical instrument further includes an inner conductive ring 6, an outer conductive ring 7, and a conductive ring fixing seat 8. The inner conductive ring 6 and the outer conductive ring 7 are fixed on the conductive ring fixing seat 8. The button printed circuit board pcb is welded to the inner conductive ring 6 and the outer conductive ring 7. The signal input / output port IO of the button printed circuit board pcb is welded to the inner conductive ring 6, and the ground terminal Com of the button printed circuit board pcb is welded to the outer conductive ring 7.

[0072] Further, the above ultrasonic surgical instrument further includes a transducer handle and a main unit. After the above tool tip is connected to the above transducer handle, the above inner conductive ring 6 corresponds to the signal output terminal of the above main unit through the voltage transformer of the above main unit. There is a signal detection circuit at the signal output terminal of the above main unit. The signal output from the signal output terminal of the above main unit is induced to the signal input / output port IO with a voltage signal of 1:1 through the voltage transformer of the above main unit. The signal of the signal input / output port IO can also induce a voltage signal of 1:1 to the signal output terminal of the main unit. The signal of the signal input / output port IO can be transmitted to the signal detection circuit of the above main unit. The above outer conductive ring 7 corresponds to the ground terminal of the above main unit. When the above upper button spring piece 4 and the above lower button spring piece 5 are pressed simultaneously, the high-grade output signal line is broken, Diode-B in the above double diode stops working, the low-grade output signal line is connected, Diode-A in the above double diode starts to work, and the above low-grade output signal is transmitted to the above main unit, driving the above main unit to output low-grade parameters for operation.

[0073] Further, when the above upper button MAX is pressed, it works at a high grade; when the above lower button MIN is pressed, it works at a low grade; when the above upper button MAX and the above lower button MIN are pressed simultaneously, it works at a low grade.

[0074] Further, the above upper button MAX and the above lower button MIN in the tool tip button of the above ultrasonic surgical instrument can be pressed simultaneously.

[0075] There are two control buttons on the tool tip, namely the upper button MAX and the lower button MIN. The upper button MAX controls the excitation operation at a high grade, and the lower button MIN controls the excitation operation at a low grade. When the upper and lower buttons are pressed simultaneously, the excitation operation is performed at a low grade.

[0076] As Figure 2 shown, the above tool tip includes: upper button MAX, lower button MIN, button printed circuit board pcb, inner conductive ring 6, outer conductive ring 7, conductive ring fixing seat 8 and tool tip housing 9.

[0077] As Figure 3-1 and Figure 3-2As shown in the figure, the above-mentioned cutter head housing 9 is provided with mounting posts for the upper button MAX and the lower button MIN, namely the upper button mounting post MAX1 and the lower button mounting post MIN1. The upper button MAX and the lower button MIN also have corresponding cylindrical holes. The above-mentioned upper button MAX and the above-mentioned lower button MIN are mounted on the upper button mounting post MAX1 and the lower button mounting post MIN1 of the above-mentioned cutter head housing 9. The upper button MAX can rotate along with the upper button mounting post MAX1, and the lower button MIN can rotate along with the lower button mounting post MIN1. At the same time, the above-mentioned cutter head housing 9 is also provided with a limit design for the upper button MAX and the lower button MIN, namely the limit designs for the upper button MAX are the upper button limit MAX2 and the upper button limit MAX3 respectively, and the limit designs for the lower button MIN are the lower button limit MIN2 and the lower button limit MIN3 respectively, so as to limit the rotation angles of the upper button MAX and the lower button MIN, so as to cooperate with the above-mentioned upper button spring piece 4 and the above-mentioned lower button spring piece 5 on the above-mentioned button printed circuit board pcb to form the pressing strokes of the upper button MAX and the lower button MIN. The above-mentioned cutter head housing 9 is also provided with slots 91 and 92 for the button printed circuit board pcb, and the above-mentioned button printed circuit board pcb can be fixed on the above-mentioned cutter head housing 9. The final state of the above-mentioned button printed circuit board pcb inserted into the slots 91 and 92 of the above-mentioned button printed circuit board pcb is as Figure 4 shown to prevent the displacement of the above-mentioned button printed circuit board pcb.

[0078] as follows Figure 4 shown. The above-mentioned button printed circuit board pcb is provided with two spring pieces, namely the above-mentioned upper button spring piece 4 and the above-mentioned lower button spring piece 5. The side of the above-mentioned button printed circuit board pcb with the spring pieces faces the directions of the above-mentioned upper button MAX and the above-mentioned lower button MIN. The positions of the above-mentioned upper button spring piece 4 and the above-mentioned lower button spring piece 5 respectively correspond to the above-mentioned upper button MAX and the above-mentioned lower button MIN. When the upper and lower buttons are pressed, the corresponding above-mentioned upper button spring piece 4 and the above-mentioned lower button spring piece 5 will be pressed downward. The above-mentioned inner conductive ring 6 and the above-mentioned outer conductive ring 7 are fixed on the above-mentioned conductive ring fixing seat 8. The other side (non-spring piece side) of the above-mentioned button printed circuit board pcb is welded to the above-mentioned inner conductive ring 6 and the above-mentioned outer conductive ring 7. The signal input / output port IO is welded to the inner conductive ring, and the ground terminal Com is welded to the outer conductive ring. After the cutter head is connected to the transducer handle, the above-mentioned inner conductive ring 6 and the above-mentioned outer conductive ring 7 will be respectively connected to the signal line and the ground line of the transducer handle. The signal line of the transducer handle is connected to the signal output terminal of the host, and the ground line of the transducer handle is connected to the ground terminal of the host. That is, the above-mentioned inner conductive ring 6 of the cutter head corresponds to the signal output terminal of the host, and the above-mentioned outer conductive ring 7 of the cutter head corresponds to the ground terminal of the host.

[0079] as Figure 5The circuit schematic diagram of the button PCB is shown. In the schematic diagram, the single-pole double-throw switch S1 is the lower button spring piece 5 on the above-mentioned button printed circuit board PCB, which is the spring piece corresponding to the lower button MIN, and the switch S2 is the upper button spring piece 4 on the above-mentioned button printed circuit board PCB, which is the spring piece corresponding to the upper button MAX. The IO in the schematic diagram is the signal input / output port IO, and Com is the ground terminal Com. After the tool head is connected to the transducer handle and the host, that is, the signal input / output port IO of the tool head is connected to the signal output terminal of the host, and the ground terminal Com of the tool head is connected to the ground terminal of the host. The line with the switch S2 is the high-grade output signal line, and the other line is the low-grade output signal line.

[0080] Figure 5 In it, S1 represents the above-mentioned lower button MIN (adjustable power level - low-grade output signal line) on the tool head, and S2 represents the above-mentioned upper button MAX (highest power level - high-grade output signal line) on the tool head. Under normal circumstances, the single-pole double-throw switch S1 is in the connection state between the moving contact 1 and the high-power static contact 3. After pressing the above-mentioned lower button MIN, the single-pole double-throw switch S1 is in the disconnected state between the moving contact 1 and the high-power static contact 3, and becomes the connection state between the moving contact 1 and the low-power static contact 2. When the above-mentioned lower button MIN is pressed, the moving contact 1 of the above-mentioned single-pole double-throw switch S1 is disconnected from the high-power static contact 3, and the moving contact 1 is connected to the low-power static contact 2. At this time, it can work according to the adjustable power level (MIN); when the above-mentioned upper button MAX is pressed, the moving contact 1 of the above-mentioned single-pole double-throw switch S1 is in the connection state with the high-power static contact 3, and at the same time the switch S2 is in the conducting state. At this time, it can work according to the highest power level (MAX); when the upper button MAX and the lower button MIN are pressed simultaneously, the moving contact 1 of the above-mentioned single-pole double-throw switch S1 is disconnected from the high-power static contact 3, and the moving contact 1 is connected to the low-power static contact 2. At this time, it will work at the adjustable power level (MIN). It can be seen from this that after the highest power level (MAX) and the adjustable power level (MIN) are pressed respectively, they can work according to the corresponding gears. At the same time, when the upper button MAX and the lower button MIN are pressed simultaneously, it will work at the adjustable power level (MIN). The feature of this solution is that when the tool head is accidentally fired and both buttons are pressed simultaneously, it will continue to work at a safe gear, saving surgical time and ensuring safety.

[0081] From the above Figure 5As can be seen from the schematic diagram, the above-mentioned single-pole double-throw switch S1 has two connection ports. Under normal conditions, the above-mentioned single-pole double-throw switch S1 is always conducting with the high-power static contact 3. When the upper button elastic piece (switch S2) is pressed downward, the switch S2 becomes a closed state, and the circuit can be conducted. At this time, the high-grade output signal will be transmitted to the signal detection circuit of the host, driving the host to output high-grade parameters for operation; when the lower button elastic piece (single-pole double-throw switch S1) is pressed downward, the single-pole double-throw switch S1 is conducting with the low-power static contact 2. At this time, the single-pole double-throw switch S1 is still in a closed state, and the low-grade output signal is transmitted to the signal detection circuit of the host, driving the host to output low-grade parameters for operation; when the upper and lower button elastic pieces (S1, S2) are pressed simultaneously, the single-pole double-throw switch S1 is conducting with the low-power static contact 2, and the switch S2 becomes a closed state. At this time, the high-grade output signal circuit is open, and the low-grade output signal circuit is conducting and transmits the signal to the signal detection circuit of the host, driving the host to output low-grade parameters for operation.

[0082] The above adjustable power level can also be a low power level or a low-grade power level.

[0083] According to the above structure and circuit design, it is possible to achieve working in the low grade by pressing the lower button MIN button; working in the high grade by pressing the upper button MAX; and working in the low grade after pressing both the upper button MAX and the lower button MIN simultaneously.

[0084] It should be noted that although several units / modules or sub-units / modules of the device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present invention, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0085] Although the spirit and principles of the present invention have been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the disclosed specific embodiments, and the division of each aspect does not mean that the features in these aspects cannot be combined for benefits. This division is only for the convenience of expression. The present invention aims to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. An ultrasonic surgical instrument having a cutter head button that can be pressed simultaneously, characterized in that, Comprising: The main body of the ultrasonic surgical instrument, including a first signal terminal, a first ground terminal, a voltage transformer, and a signal detection circuit; The knife head, including a second signal terminal and a second ground terminal, the second signal terminal induces a voltage signal with the first signal terminal through the voltage transformer, and the second ground terminal is connected to the first ground terminal; The first switch, having a first connection state and a second connection state; The second switch, having a third connection state and a fourth connection state; When the first switch is in the first connection state and the second switch is in the third connection state, the first signal terminal outputs a first signal, the second signal terminal induces the first signal, and transmits the first signal to the signal detection circuit; When the first switch is in the first connection state and the second switch is in the fourth connection state, the first signal circuit is turned on, the second signal terminal generates a second signal, the first signal terminal induces the second signal, and transmits the second signal to the signal detection circuit; When the first switch is in the second connection state and the second switch is in the third connection state, the second signal circuit is turned on, the second signal terminal generates a third signal, the first signal terminal induces the third signal, and transmits the third signal to the signal detection circuit; When the first switch is in the second connection state and the second switch is in the fourth connection state, the second signal circuit is turned on, the second signal terminal generates the third signal, the first signal terminal induces the third signal, and transmits the third signal to the signal detection circuit; The second signal terminal and the first signal terminal mutually induce a voltage signal with a ratio of 1:1 through the voltage transformer; The first switch is a single-pole double-throw switch (S1), the single-pole double-throw switch (S1) includes a moving contact (1), a low-power static contact (2), and a high-power static contact (3), the first connection state is the connection state of the moving contact (1) and the high-power static contact (3), and the second connection state is the connection state of the moving contact (1) and the low-power static contact (2); The second switch is a switch (S2), the third connection state is the off state of the switch (S2), and the fourth connection state is the on state of the switch (S2); When the second switch is turned on, it works in the high gear; when the first switch is turned on, it works in the low gear; when both the second switch and the first switch are turned on, it works in the low gear.

2. The ultrasonic surgical instrument according to claim 1, characterized in that, The second signal terminal is a signal input / output port (IO), the second ground terminal is a ground terminal (Com), and a double diode A and a double diode B are connected between the signal input / output port (IO) and the ground terminal (Com); When the first switch is in the first connection state and the second switch is in the third connection state, the first signal terminal outputs a first signal, the second signal terminal senses the first signal and transmits the first signal to the signal detection circuit, and both the double diode A and the double diode B are in the off state; When the first switch is in the first connection state and the second switch is in the fourth connection state, the first signal circuit is turned on, the second signal terminal generates a second signal, the first signal terminal senses the second signal and transmits the second signal to the signal detection circuit, and the double diode B is turned on in the first signal circuit; When the first switch is in the second connection state and the second switch is in the third connection state, the second signal circuit is turned on, the second signal terminal generates a third signal, the first signal terminal senses the third signal and transmits the third signal to the signal detection circuit, and the double diode A is turned on in the second signal circuit; When the first switch is in the second connection state and the second switch is in the fourth connection state, the second signal circuit is turned on, the second signal terminal generates the third signal, the first signal terminal senses the third signal and transmits the third signal to the signal detection circuit, and the double diode A is turned on in the second signal circuit.

3. The ultrasonic surgical instrument according to claim 1, characterized in that, The low-power static contact (2) is connected in series with the double diode A that is turned on in the second signal circuit; The high-power static contact (3) is connected in series with the double diode B that is turned on in the first signal circuit, and the high-power static contact (3) is also connected in series with the switch (S2).

4. The ultrasonic surgical instrument according to claim 2, characterized in that, The ultrasonic surgical instrument further includes a button printed circuit board (PCB), an inner conductive ring (6), an outer conductive ring (7), and a conductive ring fixing seat (8). The inner conductive ring (6) and the outer conductive ring (7) are fixed on the conductive ring fixing seat (8). The button printed circuit board (PCB) is welded to the inner conductive ring (6) and the outer conductive ring (7). The signal input / output port (IO) and the ground terminal (Com) are located on the button printed circuit board (PCB). The signal input / output port (IO) is welded to the inner conductive ring (6), and the ground terminal (Com) is welded to the outer conductive ring (7).

5. The ultrasonic surgical instrument according to claim 4, characterized in that, The ultrasonic surgical instrument further includes a transducer handle. After the tool head is connected to the transducer handle, the inner conductive ring (6) corresponds to the signal output terminal of the host through the voltage transformer of the host. The signal output terminal of the host is provided with a signal detection circuit, and the signal output by the signal output terminal of the host is inducted to the signal input / output port (IO) at a ratio of 1:1 through the voltage transformer of the host.

6. The ultrasonic surgical instrument according to any one of claims 1 to 3, characterized in that, The first switch and the second switch in the tool head button of the ultrasonic surgical instrument can be turned on simultaneously.

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