Electric surgical instrument

Abstract

The invention relates to the technical field of medical instruments, in particular to an electric surgical instrument. The electric surgical instrument comprises a main machine, a battery pack and a convertible pole piece assembly. The convertible pole piece assembly comprises a first pole piece assembly and a second pole piece assembly, one of the first pole piece assembly and the second pole piece assembly is arranged on the host, and the other one is arranged on the battery pack; the first pole piece assembly comprises a first positive pole piece and a first negative pole piece, and the second pole piece assembly is provided with a second positive pole piece corresponding to the first positive pole piece and a second negative pole piece corresponding to the first negative pole piece in a positive insertion posture and a negative insertion posture, so that the first positive pole piece and the second positive pole piece are in contact conduction; and the first negative plate is in contact conduction with the second negative plate. When a user uses the electric surgical instrument, the host and the battery pack can be used in a forward insertion mode and a reverse insertion mode, a fool-proof structure is not needed, the relative position of the battery pack and the host does not need to be adjusted for the fool-proof structure, and the assembly efficiency and the assembly convenience are improved.

Description

[0001] This application is a divisional application of an invention patent application with an application date of November 18, 2022, application number 202211444808.X, and invention name “Electric Surgical Instrument”. Technical Field

[0002] The present application relates to the technical field of medical instruments, and in particular to an electric surgical instrument. Background Art

[0003] As we all know, electric surgical instruments have been widely used in intracavitary surgeries such as abdominal surgeries. Electric surgical instruments usually rely on battery power to perform operations such as cutting and suturing tissues.

[0004] Specifically, electric surgical instruments include a battery pack and a main unit. The battery pack and the main unit are detachably connected. In order to avoid the two being plugged in reverse and causing the normal power supply function to fail, an anti-mute structure is generally set between the two. When the user is in use, if the anti-mute structure is not positioned correctly, the two cannot be plugged in.

[0005] Although this fool-proof structure can effectively prevent the battery pack from being inserted into the host in reverse, if the two cannot be plugged in, the battery pack needs to be realigned and then plugged into the host until the two are successfully plugged in, which affects the convenience and efficiency of plugging in. Summary of the Invention

[0006] The purpose of the present application is to provide an electric surgical instrument to solve, to a certain extent, the technical problem in the prior art that the battery pack and the main unit can only be plugged in in the right direction, which requires the two to be specially aligned before they can be successfully plugged in, making the plugging inconvenient.

[0007] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions: An electric surgical instrument comprises a main unit, a battery pack and a convertible electrode assembly; the battery pack is detachably plugged into the main unit in a forward insertion posture or a reverse insertion posture; The convertible pole piece assembly includes a first pole piece assembly and a second pole piece assembly, one of the first pole piece assembly and the second pole piece assembly is provided on the host, and the other is provided on the battery pack; The first electrode assembly includes a first positive electrode and a first negative electrode, and the second electrode assembly has a second positive electrode corresponding to the first positive electrode and a second negative electrode corresponding to the first negative electrode in both the forward insertion posture and the reverse insertion posture, so that the first positive electrode is in contact with the second positive electrode, and the first negative electrode is in contact with the second negative electrode to form an electrical connection between the host and the battery pack.

[0008] As a preferred embodiment, one of the host and the battery pack having the first electrode sheet assembly is a first device, and the connection electrodes of the first device include a first positive electrode and a first negative electrode; the first positive electrode sheet is electrically connected to the first positive electrode, and the first negative electrode sheet is electrically connected to the first negative electrode; one of the host and the battery pack having the second electrode sheet assembly is a second device, and the connection electrodes of the second device include a second positive electrode and a second negative electrode; in the forward plugging posture and the reverse plugging posture, the second positive electrode sheet is electrically connected to the second positive electrode, and the second negative electrode sheet is electrically connected to the second negative electrode.

[0009] As a preferred embodiment, the second electrode assembly includes a first switchable electrode, a second switchable electrode and a switching switch assembly; a three-dimensional coordinate system is defined, the Z axis is collinear with the axis of the battery pack in the plugged state, the X axis is arranged in the horizontal direction, the Y axis is arranged in the vertical direction, and the plane where the X axis and the Y axis are located forms four quadrants; the quadrant corresponding to the first positive electrode and the quadrant corresponding to the first negative electrode are arranged diagonally; the quadrant corresponding to the first switchable electrode is the same as the quadrant corresponding to the first positive electrode, and the quadrant corresponding to the second switchable electrode is the same as the quadrant corresponding to the first negative electrode; the switching switch assembly has the function of switching in response to the conversion between the forward insertion posture and the reverse insertion posture. An initial state and a trigger state, in the initial state, the first switchable pole piece is connected to the second positive pole through the switching switch assembly, and the second switchable pole piece is connected to the second negative pole through the switching switch assembly, wherein the first switchable pole piece is the second positive pole piece, and the second switchable pole piece is the second negative pole piece; in the trigger state, the second switchable pole piece is connected to the second positive pole through the switching switch assembly, and the first switchable pole piece is connected to the second negative pole through the switching switch assembly, wherein the second switchable pole piece is the second positive pole piece, and the first switchable pole piece is the second negative pole piece.

[0010] As a preferred embodiment, the switching switch assembly includes a triggered part, and the first device is provided with a triggering part matching the triggered part; in one of the forward insertion posture and the reverse insertion posture, the triggering part and the triggered part are in contact so that the switching switch assembly is in the triggered state; in the other of the forward insertion posture and the reverse insertion posture, the triggering part and the triggered part are staggered so that the switching switch assembly is in the initial state.

[0011] As a preferred embodiment, the triggered part is a trigger button, the trigger part includes a first local surface, and the first device is further provided with an avoidance part, and the avoidance part includes a second local surface; the first local surface and the second local surface are staggered along the vertical direction or the horizontal direction, and the second local surface is farther away from the trigger button than the first local surface along the plugging direction, so that in the plugged state, the first local surface is opposite to the trigger button and contacts the trigger button, or the second local surface is opposite to the trigger button and forms a gap with the trigger button, so that the trigger button cannot be triggered.

[0012] As a preferred embodiment, it is characterized in that the switching switch assembly is a double-pole double-throw switch.

[0013] As a preferred embodiment, a three-dimensional coordinate system is defined, the Z axis is collinear with the axis of the battery pack in the plugged state, the X axis is arranged in the horizontal direction, the Y axis is arranged in the vertical direction, and the planes where the X axis and the Y axis are located form four quadrants; the quadrant corresponding to the first positive electrode sheet and the quadrant corresponding to the second negative electrode sheet are arranged adjacent to each other; the second electrode assembly includes a first optional positive electrode sheet and a second optional positive electrode sheet arranged in the diagonal quadrants and a first optional negative electrode sheet and a second optional negative electrode sheet arranged in the other two diagonal quadrants, the first optional positive electrode sheet and the second optional positive electrode sheet are both electrically connected to the second positive electrode, the first The optional negative pole and the second optional negative pole are both electrically connected to the second power-connected negative pole; in the positive plug-in posture, the first optional positive pole sheet corresponds to the first positive pole sheet, and the first optional negative pole sheet corresponds to the first negative pole sheet, wherein the first optional positive pole sheet is the second positive pole sheet, and the first optional negative pole sheet is the second negative pole sheet; in the reverse plug-in posture, the second optional positive pole sheet corresponds to the first positive pole sheet, and the second optional negative pole sheet corresponds to the first negative pole sheet, wherein the second optional positive pole sheet is the second positive pole sheet, and the second optional negative pole sheet is the second negative pole sheet.

[0014] As a preferred embodiment, the proximal side of the host is plugged into the distal side of the battery pack; a pole piece bracket is provided on the proximal side of the host, and a slot is provided on the distal side of the battery pack; the first pole piece assembly is provided on the pole piece bracket, and the second pole piece assembly is provided in the slot; or the second pole piece assembly is provided on the pole piece bracket, and the first pole piece assembly is provided in the slot; when the host is plugged into the battery pack, the pole piece bracket extends into the slot to make the first pole piece assembly and the second pole piece assembly contact and conduct.

[0015] Compared with the prior art, the present invention has the following advantages: The electric surgical instrument provided in the present application includes a main unit, a battery pack and a convertible pole piece assembly. The main unit and the battery pack can be plugged in either forward or reverse direction. The convertible pole piece assembly is arranged between the main unit and the battery pack to ensure that the main unit and the battery pack can be electrically connected through the convertible pole piece assembly in both forward and reverse plug-in postures.

[0016] From the above, it can be seen that when using the electric surgical instrument, the user can use the main unit and the battery pack in the forward or reverse direction. There is no need to set up an anti-foolproof structure, nor is there any need to adjust the relative position between the battery pack and the main unit according to the anti-foolproof structure. Therefore, the anti-foolproof structure is omitted, and the assembly efficiency and convenience of the main unit and the battery pack are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of an electric surgical instrument provided in an embodiment of the present application; Figure 2A A schematic structural diagram of a main unit of an electric surgical instrument provided in Example 1 of the present application; Figure 2B for Figure 2A A partial enlarged view of point A in the middle Figure 3 A first structural schematic diagram of a battery pack for an electric surgical instrument provided in Example 1 of the present application; Figure 4 A second structural schematic diagram of the battery pack of the electric surgical instrument provided in Example 1 of the present application; Figure 5 This is a schematic diagram of the electric surgical instrument provided in Example 1 of the present application in a normal insertion position; Figure 6 This is a circuit schematic diagram of the electric surgical instrument provided in Example 1 of the present application in the forward insertion position; Figure 7 This is a schematic diagram of the electric surgical instrument provided in Example 1 of the present application in a reverse insertion posture; Figure 8 This is a circuit schematic diagram of the electric surgical instrument provided in Example 1 of the present application in a reverse insertion position; Figure 9A A schematic structural diagram of a main unit of an electric surgical instrument provided in Example 2 of the present application; Figure 9B for Figure 9A A partial enlarged view of point B in the middle; Figure 10 A first structural schematic diagram of a battery pack for an electric surgical instrument provided in Example 2 of the present application; Figure 11 A second structural schematic diagram of the battery pack of the electric surgical instrument provided in Example 2 of the present application; Figure 12 This is a schematic diagram of the electric surgical instrument provided in the second embodiment of the present application in the normal insertion position; Figure 13 This is a circuit diagram of the electric surgical instrument provided in the second embodiment of the present application in the forward insertion position; Figure 14 This is a schematic diagram of the electric surgical instrument provided in the second embodiment of the present application in a reverse insertion posture; Figure 15 This is a circuit schematic diagram of the electric surgical instrument provided in the second embodiment of the present application in the reverse insertion position; Figure 16 A schematic structural diagram of a switch assembly for an electric surgical instrument provided in Embodiments 1 and 2 of the present application; Figure 17 for Figure 16 A schematic structural diagram of the first switch of the switching switch assembly; Figure 18 for Figure 16 A schematic structural diagram of the second switch of the switching switch assembly; Figure 19 A schematic structural diagram of a main unit of an electric surgical instrument provided in Example 3 of the present application; Figure 20 A first structural diagram of a second pole piece assembly of an electric surgical instrument provided in Example 3 of the present application; Figure 21 A second structural schematic diagram of the second pole piece assembly of the electric surgical instrument provided in Example 3 of the present application; Figure 22 A first structural schematic diagram of a battery pack for an electric surgical instrument provided in Example 3 of the present application; Figure 23 A second structural schematic diagram of the battery pack of the electric surgical instrument provided in Example 3 of the present application; Figure 24 This is a schematic diagram of the electric surgical instrument provided in the third embodiment of the present application in the normal insertion position; Figure 25 This is a schematic diagram of the electric surgical instrument provided in the third embodiment of the present application in a reverse insertion posture; Figure 26 A schematic structural diagram of an electric surgical instrument provided in Example 4 of the present application; Figure 27 A first structural schematic diagram of a battery pack for an electric surgical instrument provided in Example 4 of the present application; Figure 28 A second structural schematic diagram of the battery pack of the electric surgical instrument provided in Example 4 of the present application; Figure 29This is a schematic diagram of the electric surgical instrument provided in the fourth embodiment of the present application in the normal insertion position; Figure 30 This is a schematic diagram of the state of the electric surgical instrument provided in Example 4 of the present application in the reverse insertion posture.

[0018] Reference numerals: 1-Electric surgical instrument; 10-Main unit; 100-Main unit; 1000-Cover plate; 1001-First electrode holder; 1002-Second electrode holder; 1003-Guide block; 101-Handle; 102-Main unit switch; 103-Casing; 104-Jaws; 105-Positive electrode for power supply; 106-Negative electrode for power supply; 107-First circuit board; 11-Battery pack; 110-Front cover; 111-Rear cover; 112-First slot; 113-Second slot; 1140-Battery cell; 1141-Nickel sheet; 1142-Battery cell output positive electrode sheet; 1143-Battery cell output negative electrode sheet; 116-Positive electrode for power supply; 117-Negative electrode for power supply; 118-Guide slot; 12-First electrode assembly; 120-First positive electrode sheet; 121-first negative electrode; 13-second electrode assembly; 130-first switchable electrode; 131-second switchable electrode; 132-switching switch assembly; 1320-first switch; 1321-first trigger button; 1322-first common pin; 1323-first normally open pin; 1324-first normally closed pin; 1325-first single-pole; 1326-second switch; 1327-second trigger button; 1328-second common pin; 1329-second normally open pin; 1330-second normally closed pin; 1331-second single-pole; 133-second circuit board; 134-first optional positive electrode; 135-first optional negative electrode; 136-second optional positive electrode; 137-second optional negative electrode; 14-avoidance groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] It should be understood that the terms "proximal" and "distal" used herein are relative to the clinician manipulating the handle of the stapler. The term "proximal" refers to the portion close to the clinician, and the term "distal" refers to the portion away from the clinician.

[0021] In the present invention, unless otherwise expressly specified and limited, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms such as "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movably connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements such as abutment. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. It should be noted that when there are qualifiers before "connected" and "connection", they have the meaning defined by the corresponding qualifiers, and only exclude situations that obviously need to be excluded, and do not exclude other possible situations. For example, "detachably connected" refers to a detachable connection, and does not include integration, but movably connected, etc. are not excluded.

[0023] See also Figures 1 to 30 As shown, an embodiment of the present application provides an electric surgical instrument, specifically an electric stapler 1. The electric stapler 1 includes a main unit 10, a battery pack 11 and a convertible pole piece assembly.

[0024] Hereinafter, the above components of the electric stapler 1 will be described in detail.

[0025] The main unit 10 is an assembly composed of the main functional components of the electric stapler 1. Specifically, the main unit 10 includes a handle 101, a sleeve 103, and jaws 104, which are connected in sequence. The housing of the handle 101 is housed within a power module and a transmission mechanism. The housing of the handle 101 is designed for the operator to grasp. The power module includes at least a motor, which is powered by a battery pack 11. The motor operates when powered, outputting electrical power. The transmission mechanism is connected to the motor and operates when powered by the motor. The sleeve 103 includes at least the remaining portion of the transmission mechanism, excluding the transmission mechanism housed within the housing of the handle 101 in this embodiment. The jaws 104 can be selectively switched between open and closed positions to tighten or loosen tissue. A staple cartridge is removably mounted within the jaws 104. The staple cartridge has a slot for movement of a cutting blade assembly. The cutting blade assembly moves distally within the slot to cut tissue and eject staples contained in the staple cartridge assembly to achieve tissue anastomosis.

[0026] Thus, the motor first drives the jaws to close and clamp the tissue through the transmission mechanism, then drives the cutting blade assembly forward through the transmission mechanism to cut and staple the tissue, then drives the cutting blade assembly backward through the transmission mechanism, and finally drives the jaws to open and release the tissue through the transmission mechanism, thereby achieving the cutting and stapler functions. The specific structures of the transmission mechanism, jaws 104, sleeve 103, and staple cartridge are prior art and will not be described in detail here.

[0027] The power module has a negative power connection 106 and a positive power connection 105, so that the power module takes power through the negative power connection 106 and the positive power connection 105, and then drives the anastomosis device through the power module. Figure 1 As shown, the battery pack 11 and the main unit 10 are removably connected, so that the two can be connected to form an integrated electric stapler 1 for use, and the two can be separated into separate parts to facilitate replacement or charging of the battery pack 11. The battery pack 11 includes a battery pack housing and a power supply module. The power supply module has a negative power supply terminal 117 and a positive power supply terminal 116. The power supply module supplies power to the outside through the positive power supply terminal 116 and the negative power supply terminal 117, thereby providing power for the operation of the power-consuming module.

[0028] Specifically, the power supply module can be formed by a single large-capacity battery, the positive pole of the entire battery is the positive power supply electrode 116 of the power supply module, and the negative pole of the entire battery is the negative power supply electrode 117 of the power supply module.

[0029] Alternatively, see Figure 4 、 Figure 11 、 Figure 23 as well as Figure 28 As shown, the power supply module includes multiple battery cells 1140 connected in series via conductive metal sheets, such as nickel sheets 1141. Among all the battery cells 1140, the two battery cells 1140 at the two ends are respectively the first battery cell 1140 and the second battery cell 1140. The positive electrode of the first battery cell 1140 that is not electrically connected to the other battery cells 1140 serves as the positive power supply electrode 116 of the power supply module, and the negative electrode of the second battery cell 1140 that is not electrically connected to the other battery cells 1140 serves as the negative power supply electrode 117. Furthermore, the multiple battery cells 1140 can be arranged in an array.

[0030] In order to electrically connect the power supply module of the battery pack 11 with the power consumption module of the host 10 when the battery pack 11 is plugged in to the host 10, especially when the battery pack 11 and the host 10 are in the forward plug-in posture and the reverse plug-in posture, it is possible to ensure that the power supply module and the power consumption module form a correct electrical path so that the two can be successfully electrically connected, the convertible electrode assembly is configured to include a first electrode assembly 12 and a second electrode assembly 13. The "forward plug-in" and "reverse plug-in" referred to are relative. When the host 10 is placed with the handle 101 downward, the battery pack 11 can form a plug-in relationship with the host 10 in the two postures. Switching between the two postures of the battery pack 11 requires rotating the battery pack 11 180°. The plug-in relationship formed by the battery pack 11 with the host 10 in the above two postures is "forward plug-in" and "reverse plug-in" respectively. For example, if the battery pack 11 is provided with positive and negative markings, the positive and negative markings may be patterns or texts that can clearly distinguish between positive and negative. After being plugged in, if the positive and negative markings are placed in the positive direction, the host 10 and the battery pack 11 are plugged in the positive direction; if the positive and negative markings are placed in the negative direction, the host 10 and the battery pack 11 are plugged in the negative direction.

[0031] One of the first electrode assembly 12 and the second electrode assembly 13 is arranged on the host 10, and the other is arranged on the battery pack 11, wherein the host 10 and the battery pack 11 are provided with the first electrode assembly 12 is a first device, and the connection electrodes of the first device include a first positive connection electrode and a first negative connection electrode, and the host 10 and the battery pack 11 are provided with the second electrode assembly 13 is a second device, and the connection electrodes of the second device include a second positive connection electrode and a second negative connection electrode.

[0032] That is, in one case, if the first pole piece assembly 12 is provided on the host 10 and the second pole piece assembly 13 is provided on the battery pack 11, then the host 10 is the first device and the battery pack 11 is the second device. Alternatively, in another case, if the first pole piece assembly 12 is provided on the battery pack 11 and the second pole piece assembly 13 is provided on the host 10, then the battery pack 11 is the first device and the host 10 is the second device. The first electrode assembly 12 includes a first positive electrode sheet 120 and a first negative electrode sheet 121. The second electrode assembly 13 has a second positive electrode sheet corresponding to the first positive electrode sheet 120 and a second negative electrode sheet corresponding to the first negative electrode sheet 121 in both the forward insertion posture and the reverse insertion posture. The so-called "first positive electrode sheet 120 corresponds to the second positive electrode sheet" means that the first positive electrode sheet 120 and the second positive electrode sheet are aligned along the plug-in direction of the battery pack 11 and the host 10 to ensure that the first positive electrode sheet 120 and the second positive electrode sheet can contact each other after plugging. At the same time, the so-called "first negative electrode sheet 121 corresponds to the second negative electrode sheet" means that the first negative electrode sheet 121 and the second negative electrode sheet are aligned along the plug-in direction of the battery pack 11 and the host 10 to ensure that the first negative electrode sheet 121 and the second negative electrode sheet can contact each other after plugging.

[0033] Among them, in the two plug-in postures, the second positive electrode provided by the second electrode assembly 13 can be served by two electrodes that are respectively normally connected to the second positive electrode, or can also be served by two electrodes that are connected to the second positive electrode in a switchable manner. Similarly, the second negative electrode provided in the two plug-in postures can be served by two electrodes that are respectively normally connected to the second negative electrode, or can also be served by two electrodes that are connected to the second negative electrode in a switchable manner. It is worth emphasizing that the setting positions and on-off control of all electrodes serving as the second positive electrode and the second negative electrode need to be correspondingly set according to the setting positions of the first positive electrode 120 and the second positive electrode.

[0034] In other words, when the first electrode assembly 12 is disposed on the host 10 and the second electrode assembly 13 is disposed on the battery pack 11, the power supply positive electrode 105 is the first power supply positive electrode, the power supply negative electrode 106 is the first power supply negative electrode, the power supply positive electrode 116 is the second power supply positive electrode, and the power supply negative electrode 117 is the second power supply negative electrode. The first positive electrode sheet 120 of the first electrode assembly 12 is always connected to the power supply positive electrode 105, and the first negative electrode sheet 121 of the first electrode assembly 12 is always connected to the power supply negative electrode 106. The second electrode assembly 13 has a second positive electrode sheet and a second negative electrode sheet in both the forward insertion position and the reverse insertion position, and ensures that the second positive electrode sheet is electrically connected to the power supply positive electrode 116, and the second negative electrode sheet is electrically connected to the power supply negative electrode 117.

[0035] Alternatively, when the first electrode assembly 12 is disposed in the battery pack 11 and the second electrode assembly 13 is disposed in the host 10, the power supply positive electrode 116 is the first power connection positive electrode, the power supply negative electrode 117 is the first power connection negative electrode, the power consumption positive electrode 105 is the second power connection positive electrode, and the power consumption negative electrode 106 is the second power connection negative electrode. The first positive electrode sheet 120 of the first electrode assembly 12 is always connected to the power supply positive electrode 116, and the first negative electrode sheet 121 of the first electrode assembly 12 is always connected to the power supply negative electrode 117. The second electrode assembly 13 has a second positive electrode sheet and a second negative electrode sheet in both the forward insertion position and the reverse insertion position, and ensures that the second positive electrode sheet is electrically connected to the power consumption positive electrode 105, and the second negative electrode sheet is electrically connected to the power consumption negative electrode 106.

[0036] In an optional solution of this embodiment, the proximal side of the host 10 is plugged into the distal side of the battery pack 11. The second positive electrode and the second negative electrode are realized by a first switchable electrode and a second switchable electrode. The connection between the first switchable electrode and the electrode plate and the connection between the second switchable electrode and the electrode plate can be switched with each other. For example: in the forward plug-in posture, the first switchable electrode is connected to the second positive electrode of the power connection, serving as the second positive electrode, and the second switchable electrode is connected to the second negative electrode of the power connection, serving as the second negative electrode; in the reverse plug-in posture, the first switchable electrode is connected to the second negative electrode of the power connection, serving as the second negative electrode, and the second switchable electrode is connected to the second positive electrode of the power connection, serving as the second positive electrode.

[0037] Specifically, a pole piece bracket is provided on the proximal side of the main body 10, and the first pole piece assembly 12 or the second pole piece assembly 13 is provided on the pole piece bracket, thereby supporting and fixing the first positive pole piece 120 and the first negative pole piece 121 included in the first pole piece assembly 12 through the pole piece bracket, or supporting and fixing the first switchable pole piece 130 and the second switchable pole piece 131 of the second pole piece assembly 13 through the pole piece bracket. Accordingly, the number of pole piece brackets is determined according to the number and installation position of the pole pieces included in the first pole piece assembly 12, or according to the number and installation position of the pole pieces included in the second pole piece assembly 13. A slot is provided on the distal side of the battery pack 11, and the second pole piece assembly 13 or the first pole piece assembly 12 is provided in the slot.

[0038] When the host 10 is plugged into the battery pack 11 , the electrode bracket extends into the slot so that the first electrode assembly 12 contacts the second electrode assembly 13 .

[0039] It is worth emphasizing that the reason why the pole piece bracket is provided on the proximal side of the main unit 10 and the slot is provided on the distal side of the battery pack 11 is because in order to drive the electric stapler 1, a relatively complex transmission structure needs to be provided inside the body 100. The transmission structure requires the body 100 to provide sufficient movement travel space along its own length direction. Therefore, the pole piece bracket is provided on the proximal side of the main unit 10, and the space provided in the pole piece bracket along the length direction serves as part of the movement travel space of the transmission structure. After the battery pack 11 is installed on the main unit 10, the pole piece bracket extends into the slot of the battery pack 11, so that at least a part of the movement travel space of the transmission structure overlaps with the battery pack in the length direction, effectively reducing the total length of the main unit 10, and by providing a slot on the battery pack 11, the protruding size of the pole piece bracket relative to the main unit 10 can be hidden inside the battery pack 11, which is conducive to the miniaturization of the electric stapler 1.

[0040] It is understandable that, whether in the forward insertion posture or the reverse insertion posture, the pole piece bracket and the slot need to be aligned along the insertion direction of the host 10 and the battery pack 11 to ensure that the pole piece bracket can be inserted into the slot.

[0041] Define a three-dimensional coordinate system, where the Z axis is collinear with the axis of the battery pack in the plugged-in state, the X axis is set in the horizontal direction, and the Y axis is set in the vertical direction. The planes where the X and Y axes are located form four quadrants, such as Figure 5 、 Figure 7 、 Figure 12 、 Figure 14 、 Figure 24 、 Figure 25 、 Figure 29 as well as Figure 30 shown.

[0042] In an optional solution of this embodiment, as an implementation solution of the convertible pole piece assembly, the second pole piece assembly 13 includes two switchable pole pieces and a switching switch assembly 132 , and the two switchable pole pieces are respectively a first switchable pole piece 130 and a second switchable pole piece 131 .

[0043] The first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively arranged in the first device corresponding to two diagonally arranged quadrants of the docking surface. It can be understood that, for the coordinate system of the docking surface, the first positive electrode sheet 120 is arranged corresponding to one of the first quadrant and the third quadrant, and the first negative electrode sheet 121 is arranged corresponding to the other of the first quadrant and the third quadrant; or, the first positive electrode sheet 120 is arranged corresponding to one of the second quadrant and the fourth quadrant, and the first negative electrode sheet 121 is arranged corresponding to the other of the second quadrant and the fourth quadrant.

[0044] The two switchable electrodes are respectively arranged on the second device in the same quadrants as the first positive electrode 120 and the first negative electrode 121. In other words, when the first positive electrode 120 and the first negative electrode 121 correspond to the first and third quadrants, the first switchable electrode 130 is arranged in one of the first and third quadrants, and the second switchable electrode 131 is arranged in the other of the first and third quadrants. Alternatively, when the first positive electrode 120 and the first negative electrode 121 correspond to the second and fourth quadrants, the first switchable electrode 130 is arranged in one of the second and fourth quadrants, and the second switchable electrode 131 is arranged in the other of the second and fourth quadrants.

[0045] It is precisely because the quadrants corresponding to the first positive electrode piece 120 and the first negative electrode piece 121 are diagonally arranged, and the quadrants corresponding to the first switchable electrode piece 130 and the second switchable electrode piece 131 are the same as the first positive electrode piece 120 and the first negative electrode piece 121, so whether in the forward insertion posture or the reverse insertion posture, the first positive electrode piece 120 and the first negative electrode piece 121 can respectively correspond to one of the two switchable electrode pieces, ensuring that after insertion, the two switchable electrode pieces are respectively in contact and conductive with the first positive electrode piece 120 and the first negative electrode piece 121, so that the first positive electrode is electrically connected to the second positive electrode through the first positive electrode piece 120 and the switchable electrode piece, and the first negative electrode is electrically connected to the second negative electrode through the first negative electrode piece 121 and the other switchable electrode piece.

[0046] The switching switch component 132 is arranged in the second device, and the switching switch component 132 has an initial state and a trigger state. In the initial state and the trigger state, in the initial state, the first switchable pole piece 130 is connected to the second positive pole through the switching switch component 132, and the second switchable pole piece 131 is connected to the second negative pole through the switching switch component 132. In the trigger state, the second switchable pole piece 131 is connected to the second positive pole through the switching switch component 132, and the first switchable pole piece 130 is connected to the second negative pole through the switching switch component 132.

[0047] To illustrate this, if in the forward plugging posture, the first switchable pole piece 130 corresponds to the second quadrant and is electrically connected to the second positive pole, and the second switchable pole piece 131 corresponds to the fourth quadrant and is electrically connected to the second negative pole, then in the reverse plugging posture, the second switchable pole piece 131 corresponds to the second quadrant and is electrically connected to the second positive pole, and the first switchable pole piece 130 corresponds to the fourth quadrant and is electrically connected to the second negative pole. It can be seen that the first switchable pole piece 130 in the forward plugging posture and the second switchable pole piece 131 in the reverse plugging posture both correspond to the second quadrant and are electrically connected to the second positive pole. Similarly, the second switchable pole piece 131 in the forward plugging posture and the first switchable pole piece 130 in the reverse plugging posture both correspond to the fourth quadrant and are electrically connected to the second negative pole.

[0048] Optionally, in the forward insertion posture, the switching switch assembly 132 is in the initial state, and in the reverse insertion posture, the switching switch assembly 132 is in the triggered state; or, in the forward insertion posture, the switching switch assembly 132 is in the triggered state, and in the reverse insertion posture, the switching switch assembly 132 is in the initial state.

[0049] The initial state and trigger state of the switching switch assembly 132 are associated with the forward insertion posture and the reverse insertion posture respectively, so as to ensure that the switchable pole pieces located in the same quadrant can be electrically connected to the connection electrode of the second device with the same polarity regardless of whether the device is in the forward insertion posture or the reverse insertion posture, and the polarity of the two switchable pole pieces can be converted by the switching switch assembly 132.

[0050] In this embodiment, in order to realize state switching and control of the switching switch component 132 in the forward insertion posture and the reverse insertion posture, the switching switch component 132 includes a triggered part, and the first device is provided with a triggering part matching the triggered part.

[0051] In this embodiment, as an implementation scheme of the switching switch assembly 132, the triggered portion is a trigger button.

[0052] The triggering portion includes a first partial surface of the first device, the first device is provided with an avoidance portion, and the avoidance portion includes a second partial surface of the first device.

[0053] The second local surface is farther away from the trigger button along the plugging direction than the first local surface. For example, the surface of the first device facing the second device is roughly a plane, the first local surface can be flush with the plane, and the second local surface can be recessed relative to the plane in a direction away from the second device, or the second local surface can be flush with the plane, and the first local surface can be raised relative to the plane in a direction toward the second device.

[0054] Thus, when the first local surface is opposite to the trigger button, it can contact and press the trigger button, so that the switching switch component 132 switches to the trigger state; when the second local surface is opposite to the trigger button, a gap can be formed with the trigger button, and the trigger button will not be pressed by the second local surface, thereby switching the switching switch component 132 to the initial state.

[0055] Therefore, the first local surface is configured to be opposite to the trigger button in the forward insertion posture, so that the switching switch component 132 can be switched to the trigger state in the forward insertion posture. At the same time, the second local surface is configured to be opposite to the trigger button in the reverse insertion posture, so that the switching switch component 132 can be switched to the initial state in the reverse insertion posture (this situation is not shown in the figure).

[0056] Alternatively, see Figures 2A to 5 、 Figure 7 、 Figures 9A to 12 as well as Figure 14As shown, the second local surface is configured to be set opposite to the trigger button in the forward insertion posture, so that the switching switch component 132 is switched to the initial state in the forward insertion posture. At the same time, the first local surface is configured to be set opposite to the trigger button in the reverse insertion posture, so that the switching switch component 132 is switched to the trigger state in the reverse insertion posture.

[0057] In this embodiment, the switching switch assembly 132 can be a double-pole double-throw switch. Specifically, the double-pole double-throw switch can be an integrated double-pole double-throw switch, or the double-pole double-throw switch can be composed of two single-pole double-throw switches. In other words, as long as it is a comparable structure that can achieve the basic functions of a double-pole double-throw switch, it can be included in the scope of the double-pole double-throw switch defined in this article.

[0058] For a clearer explanation, the following examples 1 and 2 are used to illustrate the implementation of the convertible pole piece assembly.

[0059] In an optional solution of this embodiment, as another implementation solution of the convertible electrode assembly, the first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively provided on the first device corresponding to two adjacent quadrants of the docking surface. Specifically, the first positive electrode sheet 120 is set in the first quadrant, and the first negative electrode sheet 121 is set in the second quadrant, or the first negative electrode sheet 121 is set in the first quadrant, and the first positive electrode sheet 120 is set in the second quadrant, or the first positive electrode sheet 120 is set in the second quadrant, and the first negative electrode sheet 121 is set in the third quadrant, or the first negative electrode sheet 121 is set in the second quadrant, and the first positive electrode sheet 120 is set in the third quadrant, or the first positive electrode sheet 120 is set in the third quadrant, and the first negative electrode sheet 121 is set in the fourth quadrant, or the first positive electrode sheet 120 is set in the fourth quadrant, and the first negative electrode sheet 121 is set in the third quadrant, or the first positive electrode sheet 120 is set in the fourth quadrant, and the first negative electrode sheet 121 is set in the first quadrant, or the first positive electrode sheet 120 is set in the first quadrant, and the first negative electrode sheet 121 is set in the fourth quadrant.

[0060] The second positive electrode sheet is realized by a first optional positive electrode sheet and a second optional positive electrode sheet, both of which are connected to the second positive power connection and can be selectively connected to the power supply circuit, and the second negative electrode sheet is realized by a first optional negative electrode sheet and a second optional negative electrode sheet, both of which are connected to the second negative power connection and can be selectively connected to the power supply circuit. For example: in the forward plug-in posture, the first optional positive electrode sheet is connected to the power supply circuit as the second positive electrode sheet, and the first optional negative electrode sheet is connected to the power supply circuit as the second negative electrode sheet; in the reverse plug-in posture, the second optional positive electrode sheet is connected to the power supply circuit as the second positive electrode sheet, and the second optional negative electrode sheet is connected to the power supply circuit as the second negative electrode sheet. In addition, the first optional positive electrode sheet and the second optional positive electrode sheet are distributed in diagonal quadrants, and the first optional negative electrode sheet and the second optional negative electrode sheet are distributed in diagonal quadrants.

[0061] Specifically, in the forward insertion posture, the first positive electrode sheet 120 is set in any of the four quadrants of the docking surface, and the quadrant of the docking surface corresponding to the first negative electrode sheet 121 is located in the next quadrant of the quadrant corresponding to the first positive electrode sheet 120 in the clockwise direction or counterclockwise direction.

[0062] In the forward plug-in posture, the first optional positive plate 134 corresponds to the first positive plate 120, and correspondingly, the first optional negative plate 135 corresponds to the first negative plate 121, so that the first positive plate 120 is electrically connected to the second positive pole through the first optional positive plate 134, and the first negative plate 121 is electrically connected to the second negative pole through the first optional negative plate 135.

[0063] In the reverse insertion posture, the second optional positive plate 136 corresponds to the first positive plate 120, and correspondingly, the second optional negative plate 137 corresponds to the first negative plate 121, so that the first positive plate 120 is electrically connected to the second power-connected positive pole through the second optional positive plate 136, and the first negative plate 121 is electrically connected to the second power-connected negative pole through the second optional negative plate 137.

[0064] For a clearer explanation, the following third and fourth embodiments are used to illustrate the implementation of the switchable pole piece assembly.

[0065] Example 1 Combine Figures 2A to 8 as well as Figures 16 to 18 As shown, the first positive electrode 120 and the first negative electrode 121 of the first electrode assembly 12 are arranged in the battery pack 11, the battery pack 11 is the first device, the second electrode assembly 13 is arranged in the host 10, the host 10 is the second device, and the second electrode assembly 13 includes a first switchable electrode 130, a second switchable electrode 131 and a switching switch assembly 132.

[0066] The battery pack 11 includes a battery pack shell and a power supply module. The battery pack shell includes a front cover 110 and a rear cover 111 that are buckled together. The interior of the battery pack shell formed by the buckled front cover 110 and the rear cover 111 forms an installation cavity.

[0067] The power supply module is arranged in the installation cavity, and the power supply module includes four battery cells 1140 connected in series through nickel sheets 1141. Figure 4 In the figure, the positive electrode of the battery cell 1140 located in the lower right corner forms the power supply positive electrode 116, that is, the first power supply positive electrode, and the negative electrode of the battery cell 1140 located in the upper right corner forms the power supply negative electrode 117, that is, the first power supply negative electrode.

[0068] Combine Figure 3 and Figure 4As shown, the front cover 110 is provided with a first slot 112, a guide slot 118, a second slot 113, and an escape slot 14. The escape slot 14 serves as a relief element, and the surface on the front cover 110 opposite the escape slot serves as a trigger. In the upright position, the first slot 112 and the second slot 113 correspond to the second and fourth quadrants of the docking surface, respectively. The guide slot 118 is located between the first and second slots 112, 113, and the escape slot 14 is located below the first and second slots 112, 113.

[0069] One end of the first positive electrode sheet 120 is electrically connected to the positive electrode of one end battery cell 1140 (the positive electrode 116 connected to the power supply), and the other end of the first positive electrode sheet 120 extends into the first slot 112. One end of the first negative electrode sheet 121 is electrically connected to the negative electrode of the other end battery cell 1140 (the negative electrode 117 connected to the power supply), and the other end of the first negative electrode sheet 121 extends into the second slot 113.

[0070] Combine Figure 2B As shown, a cover plate 1000 is provided on the proximal side of the main body 10. The cover plate 1000 is provided with a first pole piece bracket 1001, a second pole piece bracket 1002, and a guide block 1003. The first pole piece bracket 1001 and the second pole piece bracket 1002 are spaced apart along the x-axis direction of the mating surface, and the guide block 1003 is located between the first pole piece bracket 1001 and the second pole piece bracket 1002. The switch assembly 132 is embedded in the cover plate 1000 and is located below the guide block 1003. The trigger button of the switch assembly 132 protrudes from the cover plate 1000.

[0071] The first switchable pole piece 130 is arranged on the upper surface of the first pole piece bracket 1001, and the second switchable pole piece 131 is arranged on the lower surface of the second pole piece bracket 1002, so that the first switchable pole piece 130 and the second switchable pole piece 131 are respectively arranged corresponding to the second quadrant and the fourth quadrant of the docking surface.

[0072] like Figure 6 、 Figure 8 as well as Figures 16 to 18 As shown, the switch assembly 132 includes a first switch 1320 and a second switch 1326. The first switch 1320 includes a first single-pole 1325, a first trigger button 1321, a first common pin 1322, a first normally open pin 1323, and a first normally closed pin 1324; the second switch 1326 includes a second single-pole 1331, a second trigger button 1327, a second common pin 1328, a second normally open pin 1329, and a second normally closed pin 1330.

[0073] The first normally closed pin 1324 and the second normally open pin 1329 are both electrically connected to the first switchable pole piece 130 , and the first normally open pin 1323 and the second normally closed pin 1330 are both electrically connected to the second switchable pole piece 131 .

[0074] like Figure 5 and Figure 6 As shown, when the host 10 and battery pack 11 are plugged together in a forward-facing position, the avoidance slot 14 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132, and the switch assembly 132 switches to the initial state. In the initial state, the first single-pole 1325 electrically connects the first common pin 1322 to the first normally closed pin 1324, and the second single-pole 1331 electrically connects the second common pin 1328 to the second normally closed pin 1330.

[0075] Thus, the positive power supply electrode 105 is electrically connected to the positive power supply electrode 116 in sequence through the first common pin 1322, the first single-pole 1325, the first normally closed pin 1324, the first switchable electrode piece 130, and the first positive electrode piece 120. At the same time, the negative power supply electrode 106 is electrically connected to the negative power supply electrode 117 in sequence through the second common pin 1328, the second single-pole 1331, the second normally closed pin 1330, the second switchable electrode piece 131, and the first negative electrode piece 121.

[0076] like Figure 7 and Figure 8 As shown, when the host 10 and battery pack 11 are connected in a reversed position, the upper surface of the front cover 110 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132. When these buttons are pressed, the switch assembly 132 switches to the triggered state. In the triggered state, the first single-pole 1325 electrically connects the first common pin 1322 to the first normally open pin 1323, and the second single-pole 1331 electrically connects the second common pin 1328 to the second normally open pin 1329.

[0077] The positive power supply electrode 105 is electrically connected to the positive power supply electrode 116 via the first common pin 1322, the first single-pole 1325, the first normally open pin 1323, the second switchable electrode 131, and the first positive electrode 120. Simultaneously, the negative power supply electrode 106 is electrically connected to the negative power supply electrode 117 via the second common pin 1328, the second single-pole 1331, the second normally open pin 1329, the first switchable electrode 130, and the first negative electrode 121.

[0078] Example 2 Combine Figures 9A to 18As shown, the first positive electrode 120 and the first negative electrode 121 of the first electrode assembly 12 are arranged on the host 10, the host 10 is the first device, the second electrode assembly 13 is arranged on the battery pack 11, the battery pack 11 is the second device, and the second electrode assembly 13 includes a first switchable electrode 130, a second switchable electrode 131 and a switching switch assembly 132.

[0079] like Figure 9B As shown, a cover plate 1000 is provided on the proximal side of the main body 10. The cover plate 1000 is provided with an escape groove 14, a first pole piece bracket 1001, a second pole piece bracket 1002, and a guide block 1003. The first pole piece bracket 1001 and the second pole piece bracket 1002 are spaced apart along the x-axis direction of the mating surface. The guide block 1003 is located between the first pole piece bracket 1001 and the second pole piece bracket 1002. The escape groove 14 is provided below the guide block 1003. The escape groove 14 serves as an escape portion, and the side plane of the cover plate 1000 opposite the escape groove serves as a trigger portion.

[0080] The first positive electrode sheet 120 is arranged on the upper surface of the first electrode sheet support 1001, and the first negative electrode sheet 121 is arranged on the lower surface of the second electrode sheet support 1002, so that the first positive electrode sheet 120 and the first negative electrode sheet 121 correspond to the second quadrant and the fourth quadrant of the docking surface respectively.

[0081] like Figure 10 and Figure 11 As shown, the battery pack 11 includes a battery pack shell and a power supply module. The battery pack shell includes a front cover 110 and a rear cover 111 that are buckled together. The interior of the battery pack shell formed by the front cover 110 and the rear cover 111 is formed into a mounting cavity. The power supply module is arranged in the mounting cavity. The power supply module includes four battery cells 1140 connected in series in sequence through nickel sheets 1141. Figure 11 In the figure, the positive electrode of the battery cell 1140 in the lower right corner forms the power supply positive electrode 116, that is, the second power supply positive electrode, and the negative electrode of the battery cell 1140 in the upper right corner forms the power supply negative electrode 117, that is, the second power supply negative electrode.

[0082] In order to facilitate the conversion of the connection relationship between the power supply module and the first switching electrode and the second switching electrode respectively, the power supply module also includes a second circuit board 133, a battery cell output positive electrode sheet 1142 and a battery cell output negative electrode sheet 1143. The battery cell output positive electrode sheet 1142 is electrically connected to the positive electrode of one end battery cell 1140 (the power supply connected positive electrode 116), and the battery cell output negative electrode sheet 1143 is electrically connected to the negative electrode of the other end battery cell 1140 (the power supply connected negative electrode 117).

[0083] The front cover 110 is provided with a switching switch assembly 132, a first slot 112, a guide groove 118 and a second slot 113. In the normal insertion posture, the first slot 112 and the second slot 113 are respectively arranged corresponding to the second quadrant and the fourth quadrant of the docking surface, the guide groove 118 is located between the first slot 112 and the second slot 113, and the switching switch assembly 132 is arranged below the first slot 112 and the second slot 113.

[0084] One end of the first switchable pole piece 130 extends into the installation cavity, and the other end of the first switchable pole piece 130 extends into the first slot 112 . One end of the second switchable pole piece 131 extends into the installation cavity, and the other end of the second switchable pole piece 131 extends into the second slot 113 .

[0085] like Figure 11 、 Figure 13 and Figure 15 As shown, the switch assembly 132 includes a first switch 1320 and a second switch 1326. The first switch 1320 includes a first single-pole 1325, a first trigger button 1321, a first common pin 1322, a first normally open pin 1323, and a first normally closed pin 1324. The first common pin 1322 is electrically connected to the first switchable pole piece 130. The second switch 1326 includes a second single-pole 1331, a second trigger button 1327, a second common pin 1328, a second normally open pin 1329, and a second normally closed pin 1330. The second common pin 1328 is electrically connected to the second switchable pole piece 131.

[0086] The first normally closed pin 1324 and the second normally open pin 1329 are both electrically connected to the battery cell output positive electrode sheet 1142 through the second circuit board 133, and the first normally open pin 1323 and the second normally closed pin 1330 are both electrically connected to the battery cell output negative electrode sheet 1143 through the second circuit board 133.

[0087] like Figure 12 and Figure 13 As shown, when the host 10 and battery pack 11 are plugged together in a forward-facing position, the avoidance slot 14 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132, and the switch assembly 132 switches to the initial state. In the initial state, the first single-pole 1325 electrically connects the first common pin 1322 to the first normally closed pin 1324, and the second single-pole 1331 electrically connects the second common pin 1328 to the second normally closed pin 1330.

[0088] Thus, the positive power supply electrode 116 is electrically connected to the positive power consumption electrode 105 in sequence through the battery cell output positive electrode sheet 1142, the first normally closed pin 1324, the first single-pole 1325, the first common pin 1322, the first switchable electrode sheet 130, and the first positive electrode sheet 120. At the same time, the negative power supply electrode 117 is electrically connected to the negative power consumption electrode 106 in sequence through the battery cell output negative electrode sheet 1143, the second normally closed pin 1330, the second single-pole 1331, the second common pin 1328, the second switchable electrode sheet 131, and the first negative electrode sheet 121.

[0089] like Figure 14 and Figure 15 As shown, when the host 10 and battery pack 11 are connected in a reversed position, the upper surface of the cover 1000 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132. When these buttons are pressed, the switch assembly 132 switches to the triggered state. In the triggered state, the first single-pole 1325 electrically connects the first common pin 1322 to the first normally open pin 1323, and the second single-pole 1331 electrically connects the second common pin 1328 to the second normally open pin 1329.

[0090] Thus, the positive power supply electrode 116 is electrically connected to the positive power consumption electrode 105 in sequence through the battery cell output positive electrode sheet 1142, the second normally open pin 1329, the second single pole 1331, the second common pin 1328, the second switchable electrode sheet 131, and the first positive electrode sheet 120. At the same time, the negative power supply electrode 117 is electrically connected to the negative power consumption electrode 106 in sequence through the battery cell output negative electrode sheet 1143, the first normally open pin 1323, the first single pole 1325, the first common pin 1322, the first switchable electrode sheet 130, and the first negative electrode sheet 121.

[0091] Example 3 Combine Figures 19 to 25 As shown, the first positive electrode sheet 120 and the first negative electrode sheet 121 of the first electrode sheet assembly 12 are both arranged in the battery pack 11, and the battery pack 11 is the first device. The second electrode sheet assembly 13 is arranged in the host 10, and the host 10 is the second device. The second electrode sheet assembly 13 includes a first optional positive electrode sheet 134, a second optional positive electrode sheet 136, a first optional negative electrode sheet 135 and a second optional negative electrode sheet 137.

[0092] like Figures 19 to 21 As shown, a cover plate 1000 is provided on the proximal side of the main unit 10, and a first pole piece bracket 1001, a second pole piece bracket 1002 and a guide block 1003 are provided on the cover plate 1000. The first pole piece bracket 1001 and the second pole piece bracket 1002 are spaced apart along the x-axis direction of the docking surface, and the guide block 1003 is located between the first pole piece bracket 1001 and the second pole piece bracket 1002.

[0093] The first optional positive electrode sheet 134 and the first optional negative electrode sheet 135 are respectively arranged on the upper surface and the lower surface of the first electrode sheet holder 1001, so that the first optional positive electrode sheet 134 and the first optional negative electrode sheet 135 are respectively arranged corresponding to the second quadrant and the third quadrant of the docking surface, and the second optional negative electrode sheet 137 and the second optional positive electrode sheet 136 are respectively arranged on the upper surface and the lower surface of the second electrode sheet holder 1002, so that the second optional negative electrode sheet 137 and the second optional positive electrode sheet 136 are respectively arranged corresponding to the first quadrant and the fourth quadrant of the docking surface.

[0094] The first optional positive electrode sheet 134 and the second optional positive electrode sheet 136 can be electrically connected to the electrically connected positive electrode 105 through a wire or a conductive sheet, or, as shown in FIG. Figure 20 and Figure 21 As shown, the power supply positive electrode 105 is integrated on the first circuit board 107 , and the first optional positive electrode sheet 134 and the second optional positive electrode sheet 136 are both electrically connected to the power supply positive electrode 105 on the first circuit board 107 .

[0095] Similarly, the first optional negative electrode sheet 135 and the second optional negative electrode sheet 137 can be electrically connected to the electrically connected negative electrode 106 through wires, or as shown in FIG. Figure 20 and Figure 21 As shown, the negative electrode 106 for power connection is integrated on the second circuit board 133 , and the first optional negative electrode sheet 135 and the second optional negative electrode sheet 137 are both electrically connected to the negative electrode 106 for power connection on the second circuit board 133 .

[0096] like Figure 22 and Figure 23 As shown, the battery pack 11 includes a battery pack shell and a power supply module. The battery pack shell includes a front cover 110 and a rear cover 111 that are buckled together. The interior of the battery pack shell formed by the buckled front cover 110 and the rear cover 111 forms a mounting cavity. The power supply module is arranged in the mounting cavity. The power supply module includes four battery cells 1140 connected in series via nickel sheets 1141. Figure 23 In the figure, the positive electrode of the battery cell 1140 located in the upper right corner forms the power supply positive electrode 116, that is, the first power supply positive electrode, and the negative electrode of the battery cell 1140 located in the lower right corner forms the power supply negative electrode 117, that is, the first power supply negative electrode.

[0097] The front cover 110 is provided with a first slot 112 , a guide slot 118 and a second slot 113 . The first slot 112 and the second slot 113 are sequentially spaced along the x direction of the mating surface. The guide slot 118 is located between the first slot 112 and the second slot 113 .

[0098] One end of the first positive electrode sheet 120 extends into the installation cavity and is electrically connected to the positive power supply electrode 116, and one end of the first negative electrode sheet 121 extends into the installation cavity and is electrically connected to the negative power supply electrode 117; the other end of the first positive electrode sheet 120 and the other end of the first negative electrode sheet 121 are both arranged in the first slot 112, and are relatively spaced apart along the y direction of the docking surface. The second slot 113 is vacant to accommodate optional positive and optional negative electrodes that do not participate in the electrical path in the plugged-in state.

[0099] Thus, in the forward insertion position, the first positive electrode sheet 120 and the first negative electrode sheet 121 are located in the second quadrant and the third quadrant respectively; in the reverse insertion position, the first positive electrode sheet 120 and the first negative electrode sheet 121 are located in the fourth quadrant and the first quadrant respectively.

[0100] In view of this, if Figure 24 and Figure 20 As shown, when the host 10 and the battery pack 11 are plugged together in the forward position, the first electrode holder 1001, the first optional positive electrode 134, and the first optional negative electrode 135 are inserted into the first slot 112, so that the first positive electrode 120 and the first optional positive electrode 134 are in contact and conductive, and the first negative electrode 121 and the first optional negative electrode 135 are in contact and conductive. Then, the positive electrode 105 of the user's electricity is sequentially connected to the positive electrode 116 of the power supply via the first optional positive electrode 134 and the first positive electrode 120, and the negative electrode 106 of the user's electricity is sequentially connected to the negative electrode 117 of the power supply via the first optional negative electrode 135 and the first negative electrode 121. At the same time, the second electrode holder 1002, the second optional positive electrode 136, and the second optional negative electrode 137 are inserted into the second slot 113 and are in an idle state, that is, they do not participate in the electrical path.

[0101] like Figure 25 and Figure 20 As shown, when the host 10 and the battery pack 11 are plugged in reverse, the second electrode holder 1002, the second optional positive electrode 136, and the second optional negative electrode 137 are inserted into the first slot 112, so that the first positive electrode 120 and the second optional positive electrode 136 are in contact and conductive corresponding to the fourth quadrant, and the first negative electrode 121 and the second optional negative electrode 137 are in contact and conductive corresponding to the first quadrant. Then, the positive electrode 105 of the user's electricity is sequentially connected to the positive electrode 116 of the power supply via the second optional positive electrode 136 and the first positive electrode 120, and the negative electrode 106 of the user's electricity is sequentially connected to the negative electrode 117 of the power supply via the second optional negative electrode 137 and the first negative electrode 121. At the same time, the first electrode holder 1001, the first optional positive electrode 134, and the first optional negative electrode 135 are inserted into the second slot 113 and are in an idle state, that is, they do not participate in the electrical path.

[0102] Example 4 See also Figures 26 to 30 As shown, the first positive electrode sheet 120 and the first negative electrode sheet 121 of the first electrode sheet assembly 12 are both arranged on the host 10, and the second electrode sheet assembly 13 is arranged on the battery pack 11. The second electrode sheet assembly 13 includes a first optional positive electrode sheet 134, a second optional positive electrode sheet 136, a first optional negative electrode sheet 135 and a second optional negative electrode sheet 137.

[0103] like Figure 26 As shown, a cover plate 1000 is provided on the proximal side of the host 10 , and a first pole piece support 1001 and a guide block 1003 are provided on the cover plate 1000 . The guide block 1003 is provided on the side of the first pole piece support 1001 along the x-axis direction of the docking surface.

[0104] The first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively arranged on the upper surface and the lower surface of the first electrode sheet bracket 1001, so that the first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively arranged corresponding to the second quadrant and the third quadrant of the docking surface. The first positive electrode sheet 120 is electrically connected to the positive electrode 105 for power connection, that is, electrically connected to the first positive electrode for power connection, and the first negative electrode sheet 121 is electrically connected to the negative electrode 106 for power connection, that is, electrically connected to the first negative electrode for power connection.

[0105] See also Figure 27 and Figure 28 As shown, the battery pack 11 includes a battery pack shell and a power supply module. The battery pack shell includes a front cover 110 and a rear cover 111 that are buckled together. The interior of the battery pack shell formed by the front cover 110 and the rear cover 111 is formed into a mounting cavity. The power supply module is arranged in the mounting cavity. The power supply module includes four battery cells 1140 connected in series in sequence through nickel sheets 1141. Figure 28 In the figure, the negative pole of the battery cell 1140 located in the lower right corner is the power supply negative pole 117, that is, the second power supply negative pole, and the positive pole of the battery cell 1140 located in the upper right corner is the power supply positive pole 116, that is, the second power supply positive pole.

[0106] The front cover 110 is provided with a first slot 112 , a guide slot 118 and a second slot 113 . The first slot 112 and the second slot 113 are sequentially spaced along the x direction of the mating surface. The guide slot 118 is located between the first slot 112 and the second slot 113 .

[0107] One end of the first optional positive electrode sheet 134 extends into the installation cavity and is electrically connected to the positive power supply electrode 116, and one end of the first optional negative electrode sheet 135 extends into the installation cavity and is electrically connected to the negative power supply electrode 117. The other end of the first optional positive electrode sheet 134 and the other end of the first optional negative electrode sheet 135 are both arranged in the first slot 112 and are relatively spaced apart along the y direction of the docking surface.

[0108] One end of the second optional positive electrode sheet 136 extends into the installation cavity and is electrically connected to the positive power supply electrode 116, and one end of the second optional negative electrode sheet 137 extends into the installation cavity and is electrically connected to the negative power supply electrode 117. The other end of the second optional positive electrode sheet 136 and the other end of the second optional negative electrode sheet 137 are both arranged in the second slot 113, and are relatively spaced apart along the y direction of the docking surface.

[0109] In the forward insertion posture, the first optional positive plate 134 and the first optional negative plate 135 correspond to the second quadrant and the third quadrant respectively, and the second optional positive plate 136 and the second optional negative plate 137 correspond to the fourth quadrant and the first quadrant respectively; it can be understood that in the reverse insertion posture, the first optional positive plate 134 and the first optional negative plate 135 are located in the fourth quadrant and the first quadrant respectively, and the second optional positive plate 136 and the second optional negative plate 137 are located in the second quadrant and the third quadrant respectively.

[0110] like Figure 29 As shown, when the host 10 and the battery pack 11 are plugged in a positive insertion posture, the first electrode bracket 1001, the first positive electrode 120 and the first negative electrode 121 are inserted into the first slot 112, so that in the first slot 112, the first positive electrode 120 and the first optional positive electrode 134 are in contact and conductive, and the first negative electrode 121 and the first optional negative electrode 135 are in contact and conductive.

[0111] Then, the positive electrode 105 connected to the power supply positive electrode 116 is electrically connected sequentially through the first positive electrode sheet 120 and the first optional positive electrode sheet 134. The negative electrode 106 connected to the power supply negative electrode 117 is electrically connected sequentially through the first negative electrode sheet 121 and the first optional negative electrode sheet 135. At the same time, the second optional positive electrode sheet 136 and the second optional negative electrode sheet 137 in the second slot 113 are in an idle state, that is, they do not participate in the electrical path.

[0112] like Figure 30 As shown, when the host 10 and the battery pack 11 are plugged in a reverse plug-in posture, the first electrode bracket 1001, the first positive electrode 120 and the first negative electrode 121 are inserted into the second slot 113, so that when observed from the perspective that the position of the host 10 remains unchanged, in the second slot 113, the first positive electrode 120 and the second optional positive electrode 136 are in contact and conductive, and the first negative electrode 121 and the second optional negative electrode 137 are in contact and conductive.

[0113] Then, the positive electrode 105 connected to the power supply positive electrode 116 is electrically connected in sequence through the first positive electrode sheet 120 and the second optional positive electrode sheet 136. The negative electrode 106 connected to the power supply negative electrode 117 is electrically connected in sequence through the first negative electrode sheet 121 and the second optional negative electrode sheet 137. At the same time, the first optional positive electrode sheet 134 and the first optional negative electrode sheet 135 in the first slot 112 are in an idle state, that is, they do not participate in the electrical path.

[0114] The electric surgical instrument provided herein includes a main unit, a battery pack, and a convertible electrode assembly. The main unit and the battery pack can be plugged in either forward or reverse. The convertible electrode assembly is disposed between the main unit and the battery pack to ensure that the main unit and the battery pack can be electrically connected via the convertible electrode assembly in both forward and reverse plug-in positions. Furthermore, there is no need to provide a foolproofing structure, nor is there any need to adjust the relative position of the battery pack and the main unit to accommodate the foolproofing structure. Thus, the foolproofing structure is omitted, and the assembly efficiency and convenience of the main unit and the battery pack are improved.

[0115] It should be noted that the above embodiments are described using an electric stapler as an example for electric surgical instruments, and the above embodiments can be applied to other surgical instruments with battery packs.

[0116] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0117] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric surgical instrument, characterized in that: It includes a host, a battery pack and a convertible electrode assembly; the battery pack is detachably plugged into the host in a forward or reverse plug-in posture; The convertible pole piece assembly includes a first pole piece assembly and a second pole piece assembly, one of the first pole piece assembly and the second pole piece assembly is provided on the host, and the other is provided on the battery pack; The first electrode assembly includes a first positive electrode sheet and a first negative electrode sheet, and the second electrode assembly includes a second positive electrode sheet corresponding to the first positive electrode sheet and a second negative electrode sheet corresponding to the first negative electrode sheet in both the forward insertion posture and the reverse insertion posture, so that the first positive electrode sheet and the second positive electrode sheet are in contact and conductive contact, and the first negative electrode sheet and the second negative electrode sheet are in contact and conductive contact, so that the host and the battery pack are electrically connected; The second pole piece assembly includes a switching switch assembly, and the switching switch assembly includes a triggered portion; One of the host and the battery pack provided with the first pole piece assembly is a first device, and the first device is provided with a triggering part matching the triggered part; The switch assembly has an initial state and a trigger state that are switched in response to the conversion between the forward insertion posture and the reverse insertion posture; In one of the forward insertion posture and the reverse insertion posture, the triggering part and the triggered part are in contact so that the switching switch assembly is in the triggering state; in the other of the forward insertion posture and the reverse insertion posture, the triggering part and the triggered part are staggered so that the switching switch assembly is in the initial state.

2. The electric surgical instrument according to claim 1, wherein: The electrodes of the first device include a first positive electrode and a first negative electrode; the first positive electrode sheet is electrically connected to the first positive electrode, and the first negative electrode sheet is electrically connected to the first negative electrode; one of the host and the battery pack provided with the second electrode sheet assembly is a second device, and the electrodes of the second device include a second positive electrode and a second negative electrode; In the forward insertion posture and the reverse insertion posture, the second positive electrode sheet is electrically connected to the second power-connected positive electrode, and the second negative electrode sheet is electrically connected to the second power-connected negative electrode.

3. The electric surgical instrument according to claim 2, wherein: The second pole piece assembly further includes a first switchable pole piece and a second switchable pole piece; Define a three-dimensional coordinate system, where the Z axis is collinear with the axis of the battery pack in the plugged-in state, the X axis is set in the horizontal direction, the Y axis is set in the vertical direction, and the planes of the X and Y axes form four quadrants; The quadrant corresponding to the first positive electrode sheet and the quadrant corresponding to the first negative electrode sheet are arranged diagonally; the quadrant corresponding to the first switchable electrode sheet is the same as the quadrant corresponding to the first positive electrode sheet, and the quadrant corresponding to the second switchable electrode sheet is the same as the quadrant corresponding to the first negative electrode sheet; The switch assembly has an initial state and a trigger state that are switched in response to the conversion between the forward insertion posture and the reverse insertion posture. In the initial state, the first switchable pole piece is connected to the second positive pole via the switch assembly, and the second switchable pole piece is connected to the second negative pole via the switch assembly, wherein the first switchable pole piece is the second positive pole piece, and the second switchable pole piece is the second negative pole piece. In the trigger state, the second switchable electrode is connected to the second positive electrode through the switching switch assembly, and the first switchable electrode is connected to the second negative electrode through the switching switch assembly, wherein the second switchable electrode is the second positive electrode and the first switchable electrode is the second negative electrode.

4. The electric surgical instrument according to claim 1, wherein The switching switch assembly is a double-pole double-throw switch.

5. The electric surgical instrument according to claim 2, wherein: Define a three-dimensional coordinate system, where the Z axis is collinear with the axis of the battery pack in the plugged-in state, the X axis is set in the horizontal direction, the Y axis is set in the vertical direction, and the planes of the X and Y axes form four quadrants; The quadrant corresponding to the first positive electrode sheet and the quadrant corresponding to the second negative electrode sheet are arranged adjacent to each other; the second electrode sheet assembly includes a first optional positive electrode sheet and a second optional positive electrode sheet arranged in diagonal quadrants and a first optional negative electrode sheet and a second optional negative electrode sheet arranged in the other two diagonal quadrants, the first optional positive electrode sheet and the second optional positive electrode sheet are both electrically connected to the second electrically connected positive electrode, and the first optional negative electrode and the second optional negative electrode are both electrically connected to the second electrically connected negative electrode; In the forward insertion posture, the first optional positive electrode sheet corresponds to the first positive electrode sheet, and the first optional negative electrode sheet corresponds to the first negative electrode sheet, wherein the first optional positive electrode sheet is the second positive electrode sheet, and the first optional negative electrode sheet is the second negative electrode sheet; in the reverse insertion posture, the second optional positive electrode sheet corresponds to the first positive electrode sheet, and the second optional negative electrode sheet corresponds to the first negative electrode sheet, wherein the second optional positive electrode sheet is the second positive electrode sheet, and the second optional negative electrode sheet is the second negative electrode sheet.

6. The electric surgical instrument according to any one of claims 1 to 5, characterized in that: The proximal side of the host is plugged into the distal side of the battery pack; A pole piece bracket is provided on the proximal side of the host, and a slot is provided on the distal side of the battery pack; the first pole piece assembly is provided on the pole piece bracket, and the second pole piece assembly is provided in the slot; or the second pole piece assembly is provided on the pole piece bracket, and the first pole piece assembly is provided in the slot; When the host is plugged into the battery pack, the pole piece bracket extends into the slot, so that the first pole piece assembly and the second pole piece assembly are in contact and conductive.

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