Electrosurgical instrument

Abstract

The present application relates to the technical field of medical devices, and in particular to an electric surgical instrument. The electric surgical instrument includes a main body, a battery pack, and a convertible pole piece assembly; 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 disposed on the main body, and the other is disposed on the battery pack; the first pole piece assembly includes a first positive pole piece and a first negative pole piece, and the second pole piece assembly has 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 both the forward insertion posture and the reverse insertion posture, so that the first positive pole piece is in contact and conduction with the second positive pole piece, and the first negative pole piece is in contact and conduction with the second negative pole piece. When a user uses the electric surgical instrument, the main body and the battery pack can be used in forward insertion and reverse insertion, without a foolproof structure, and there is no need to adjust the relative positions of the battery pack and the main body for the foolproof structure, improving the assembly efficiency and assembly convenience.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and particularly to an electric surgical instrument. Background Art

[0002] As is well known, electric surgical instruments have been widely used in intracavitary surgeries such as abdominal cavity surgeries. Electric surgical instruments usually rely on the power provided by a battery pack to complete operations such as tissue cutting and suturing.

[0003] Specifically, an electric surgical instrument includes a battery pack and a main body. The battery pack is detachably plugged into the main body, and in order to prevent reverse plugging between the two, which may result in the inability to achieve normal power supply function, a foolproof structure is generally provided between the two. When a user uses it, if the position of the foolproof structure is incorrect, the two cannot be plugged in.

[0004] Although this foolproof structure can effectively prevent reverse plugging between the battery pack and the main body, if the two cannot be plugged in, the battery pack needs to be repositioned and then plugged into the main body until the two are successfully plugged in with correct alignment, which affects the plugging convenience and efficiency of the two. Summary of the Invention

[0005] 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 body can only be plugged in correctly, so they need to be specifically aligned before successful plugging, resulting in inconvenient plugging.

[0006] The above object of the present invention can be achieved by the following technical solutions:

[0007] An electric surgical instrument includes a main body, a battery pack, and a convertible pole piece assembly; the battery pack is detachably plugged into the main body in a correct plugging posture or a reverse plugging posture;

[0008] 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 main body, and the other is provided on the battery pack;

[0009] The first pole piece assembly includes a first positive pole piece and a first negative pole piece. The second pole piece assembly has 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 both the correct plugging posture and the reverse plugging posture, so that the first positive pole piece is in contact and conduction with the second positive pole piece, and the first negative pole piece is in contact and conduction with the second negative pole piece, so that the main body and the battery pack form an electrical connection.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] As a preferred embodiment, the triggered part is a trigger button, the triggering part includes a first partial surface, and the first device is further provided with an avoidance part, and the avoidance part includes a second partial surface; the first partial surface and the second partial surface are arranged offset in the vertical direction or the horizontal direction, and the second partial surface is farther away from the trigger button than the first partial surface along the insertion direction, so that in the inserted state, the first partial surface is opposite to the trigger button and contacts the trigger button, or the second partial surface is opposite to the trigger button and forms a gap with the trigger button, so that the trigger button cannot be triggered.

[0014] As a preferred embodiment, the changeover switch assembly is a double-pole double-throw switch.

[0015] 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 inserted state, the X-axis is arranged horizontally, the Y-axis is arranged vertically, and the plane where the X-axis and the Y-axis are located forms four quadrants; the quadrant corresponding to the first positive electrode tab and the quadrant corresponding to the second negative electrode tab are adjacent; the second electrode tab assembly includes a first optional positive electrode tab and a second optional positive electrode tab arranged in diagonal quadrants and a first optional negative electrode tab and a second optional negative electrode tab arranged in the other two diagonal quadrants, the first optional positive electrode tab and the second optional positive electrode tab are both electrically connected to the second connected positive electrode, and the first optional negative electrode and the second optional negative electrode are both electrically connected to the second connected negative electrode; in the forward insertion posture, the first optional positive electrode tab corresponds to the first positive electrode tab, and the first optional negative electrode tab corresponds to the first negative electrode tab, wherein the first optional positive electrode tab is the second positive electrode tab, and the first optional negative electrode is the second negative electrode tab; in the reverse insertion posture, the second optional positive electrode tab corresponds to the first positive electrode tab, and the second optional negative electrode tab corresponds to the first negative electrode tab, wherein the second optional positive electrode tab is the second positive electrode tab, and the second optional negative electrode is the second negative electrode tab.

[0016] As a preferred embodiment, the near side of the host is inserted into the far side of the battery pack; a tab holder is arranged on the near side of the host, and a slot is arranged on the far side of the battery pack; the first electrode tab assembly is arranged on the tab holder, and the second electrode tab assembly is arranged in the slot; or the second electrode tab assembly is arranged on the tab holder, and the first electrode tab assembly is arranged in the slot; when the host is inserted into the battery pack, the tab holder extends into the slot so that the first electrode tab assembly is in contact and conduction with the second electrode tab assembly.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] The electric surgical instrument provided by the present application includes a main body, a battery pack, and a convertible pole piece assembly. The main body and the battery pack can be plugged in forward or backward. The convertible pole piece assembly is arranged between the main body and the battery pack to ensure that the main body and the battery pack can be electrically connected through the convertible pole piece assembly in both the forward plugging posture and the backward plugging posture.

[0019] In summary, when the user uses the electric surgical instrument, the main body and the battery pack can be plugged in forward or backward. There is no need to set an anti-misinsertion structure, nor to adjust the relative position between the battery pack and the main body for the anti-misinsertion structure. Therefore, the anti-misinsertion structure is omitted, and the assembly efficiency and assembly convenience of the main body and the battery pack are improved. Description of the Drawings

[0020] Figure 1 Schematic structural diagram of the electric surgical instrument provided by the embodiment of the present application;

[0021] Figure 2A Schematic structural diagram of the main body of the electric surgical instrument provided by Embodiment 1 of the present application;

[0022] Figure 2B is Figure 2A Local enlarged view of A in

[0023] Figure 3 First schematic structural diagram of the battery pack of the electric surgical instrument provided by Embodiment 1 of the present application;

[0024] Figure 4 Second schematic structural diagram of the battery pack of the electric surgical instrument provided by Embodiment 1 of the present application;

[0025] Figure 5 Schematic state diagram of the electric surgical instrument provided by Embodiment 1 of the present application in the forward plugging posture;

[0026] Figure 6 Schematic circuit diagram of the electric surgical instrument provided by Embodiment 1 of the present application in the forward plugging posture;

[0027] Figure 7 Schematic state diagram of the electric surgical instrument provided by Embodiment 1 of the present application in the backward plugging posture;

[0028] Figure 8 Schematic circuit diagram of the electric surgical instrument provided by Embodiment 1 of the present application in the backward plugging posture;

[0029] Figure 9A Schematic structural diagram of the main body of the electric surgical instrument provided by Embodiment 2 of the present application;

[0030] Figure 9B is Figure 9APartial enlarged view at B in the [original context];

[0031] Figure 10 The first schematic structural diagram of the battery pack of the electrosurgical instrument provided in the second embodiment of the present application;

[0032] Figure 11 The second schematic structural diagram of the battery pack of the electrosurgical instrument provided in the second embodiment of the present application;

[0033] Figure 12 Schematic diagram of the state of the electrosurgical instrument provided in the second embodiment of the present application in the positive insertion posture;

[0034] Figure 13 Schematic circuit diagram of the electrosurgical instrument provided in the second embodiment of the present application in the positive insertion posture;

[0035] Figure 14 Schematic diagram of the state of the electrosurgical instrument provided in the second embodiment of the present application in the reverse insertion posture;

[0036] Figure 15 Schematic circuit diagram of the electrosurgical instrument provided in the second embodiment of the present application in the reverse insertion posture;

[0037] Figure 16 Schematic structural diagram of the switching switch assembly of the electrosurgical instrument provided in the first and second embodiments of the present application;

[0038] Figure 17 For Figure 16 Schematic structural diagram of the first switch of the switching switch assembly in [original context];

[0039] Figure 18 For Figure 16 Schematic structural diagram of the second switch of the switching switch assembly in [original context];

[0040] Figure 19 Schematic structural diagram of the main body of the electrosurgical instrument provided in the third embodiment of the present application;

[0041] Figure 20 The first schematic structural diagram of the second pole piece assembly of the electrosurgical instrument provided in the third embodiment of the present application;

[0042] Figure 21 The second schematic structural diagram of the second pole piece assembly of the electrosurgical instrument provided in the third embodiment of the present application;

[0043] Figure 22 The first schematic structural diagram of the battery pack of the electrosurgical instrument provided in the third embodiment of the present application;

[0044] Figure 23 The second schematic structural diagram of the battery pack of the electrosurgical instrument provided in the third embodiment of the present application;

[0045] Figure 24 Schematic diagram of the state of the electrosurgical instrument provided in Embodiment 3 of the present application in the forward insertion posture;

[0046] Figure 25 Schematic diagram of the state of the electrosurgical instrument provided in Embodiment 3 of the present application in the reverse insertion posture;

[0047] Figure 26 Schematic diagram of the structure of the electrosurgical instrument provided in Embodiment 4 of the present application;

[0048] Figure 27 First schematic diagram of the battery pack of the electrosurgical instrument provided in Embodiment 4 of the present application;

[0049] Figure 28 Second schematic diagram of the battery pack of the electrosurgical instrument provided in Embodiment 4 of the present application;

[0050] Figure 29 Schematic diagram of the state of the electrosurgical instrument provided in Embodiment 4 of the present application in the forward insertion posture;

[0051] Figure 30 Schematic diagram of the state of the electrosurgical instrument provided in Embodiment 4 of the present application in the reverse insertion posture.

[0052] Reference numerals:

[0053] 1 - Electric surgical instrument; 10 - Main unit; 100 - Body; 1000 - Cover plate; 1001 - First pole piece bracket; 1002 - Second pole piece bracket; 1003 - Guide block; 101 - Handle; 102 - Body switch; 103 - Sleeve; 104 - Jaw; 105 - Power supply positive electrode; 106 - Power supply negative electrode; 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 - Power supply connection positive electrode; 117 - Power supply connection negative electrode; 118 - Guide groove; 12 - First pole piece assembly; 120 - First positive electrode piece; 121 - First negative electrode piece; 13 - Second pole piece assembly; 130 - First switchable pole piece; 131 - Second switchable pole piece; 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 piece; 135 - First optional negative electrode piece; 136 - Second optional positive electrode piece; 137 - Second optional negative electrode piece; 14 - Avoidance groove. Detailed implementation manner

[0054] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be 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 used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0055] It should be understood that the terms "proximal" and "distal" used herein are relative to the clinician operating the handle of the stapler. The term "proximal" refers to the part close to the clinician, and the term "distal" refers to the part far from the clinician.

[0056] In the present invention, unless otherwise clearly defined and limited, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0057] In the present invention, unless otherwise clearly defined and limited, terms such as "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, a movable connection, or an integral body; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components such as abutting. For those of ordinary skill in the art, 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 limiting words before "connected" and "coupled", they have the meanings limited by the corresponding limiting words, only excluding the obvious cases that need to be excluded, and not excluding other possible cases. For example, "detachably connected" refers to a detachable connection, excluding being an integral body, but a movable connection and the like are not excluded.

[0058] See 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 body 10, a battery pack 11, and a convertible pole piece assembly.

[0059] In the following, the above components of the electric stapler 1 will be specifically described.

[0060] The main body 10 is an assembly formed by assembling the main functional components of the electric stapler 1. Specifically, the main body 10 includes a handle 101, a sleeve 103, and a jaw 104 that are connected in sequence. An electrical module and a transmission mechanism are provided inside the housing of the handle 101, and the housing of the handle 101 can be held by an operator. The electrical module includes at least a motor, and the battery pack 11 supplies electrical energy to the motor. When the motor obtains electrical energy, it operates and outputs an electric driving force. The transmission mechanism is connected to the motor and operates when obtaining the electric driving force output by the motor. The sleeve 103 includes at least other parts of the transmission mechanism except for the transmission mechanism housed in the housing of the handle 101 in this embodiment. The jaw 104 can be selectively switched between an open state and a closed state to clamp or release tissue. A staple cartridge is detachably provided inside the jaw 104. The staple cartridge is provided with a groove for the movement of the cutting knife assembly. During the process of the cutting knife assembly moving towards the distal end in the groove, it can cut the tissue and push out the staples accommodated in the staple cartridge assembly to anastomose the tissue.

[0061] Thus, the motor first drives the jaw to close and clamp the tissue through the transmission mechanism, then the motor drives the cutting knife assembly to advance through the transmission mechanism to cut and anastomose the tissue, then the motor drives the cutting knife assembly to retreat through the transmission mechanism, and finally the motor drives the jaw assembly to open and release the tissue through the transmission mechanism, so as to realize the functions of cutting and anastomosing of the stapler. The specific structures of the transmission mechanism, the jaw 104, the sleeve 103, and the staple cartridge are prior art and will not be elaborated here.

[0062] The power consumption module has a power consumption power connection negative electrode 106 and a power consumption power connection positive electrode 105. Thus, the power consumption module draws power through the power consumption power connection negative electrode 106 and the power consumption power connection positive electrode 105, and then drives the stapler through the power consumption module. As Figure 1 shown, the battery pack 11 is detachably plugged into the main body 10, so that the two can be connected into an integral electric stapler 1 for use, and the two can be disassembled into separate parts to facilitate the replacement or charging of the battery pack 11. Among them, the battery pack 11 includes a battery pack housing and a power supply module. The power supply module has a power supply power connection negative electrode 117 and a power supply power connection positive electrode 116. Thus, the power supply module supplies power outward through the power supply power connection positive electrode 116 and the power supply power connection negative electrode 117, and then provides electrical energy for the operation of the power consumption module.

[0063] Specifically, the power supply module can be formed by a single large-capacity battery. The positive electrode of the whole battery is the power supply power connection positive electrode 116 of the power supply module, and the negative electrode of the whole battery is the power supply power connection negative electrode 117 of the power supply module.

[0064] Alternatively, referring to Figure 4 、 Figure 11 、 Figure 23 and Figure 28 shown, the power supply module includes a plurality of battery cells 1140 connected in series in sequence through conductive metal sheets. The conductive metal sheets can be, for example, nickel sheets 1141. Among them, the two battery cells 1140 located at both ends among all the battery cells 1140 are the first battery cell 1140 and the second battery cell 1140 respectively. The positive electrode of the first battery cell 1140 that is not electrically connected to other battery cells 1140 is used as the power supply power connection positive electrode 116 of the power supply module, and the negative electrode of the second battery cell 1140 that is not electrically connected to other battery cells 1140 is used as the power supply power connection negative electrode 117. Further, the plurality of battery cells 1140 can be arranged in an array.

[0065] In order to electrically connect the power supply module of the battery pack 11 to the power consumption module of the host 10 when the battery pack 11 is plugged into the host 10, especially in the case where the battery pack 11 and the host 10 are in the forward plugging posture and the reverse plugging posture, it is necessary to ensure that a correct electrical path is formed between the power supply module and the power consumption module so that the two can be successfully electrically connected. The convertible pole piece assembly is configured to include a first pole piece assembly 12 and a second pole piece assembly 13. Herein, the so-called "forward plugging" and "reverse plugging" are relative. When the host 10 is placed with the handle 101 downward, the battery pack 11 can form a plugging relationship with the host 10 in two postures. To switch between the two postures of the battery pack 11, the battery pack 11 needs to be rotated 180°. Among them, the pluggings formed by the battery pack 11 and the host 10 in the above two postures are respectively "forward plugging" and "reverse plugging". For example, if there are forward and reverse marks on the battery pack 11, the forward and reverse marks can be patterns or words that can clearly distinguish the front and back. After plugging, if the forward and reverse marks are placed forward, the host 10 and the battery pack 11 are in forward plugging; if the forward and reverse marks are placed backward, the host 10 and the battery pack 11 are in reverse plugging.

[0066] One of the first pole piece assembly 12 and the second pole piece assembly 13 is disposed on the host 10, and the other is disposed on the battery pack 11. Among them, the one of the host 10 and the battery pack 11 where the first pole piece assembly 12 is disposed is the first device, and the electrode connectors of the first device include a first positive electrode connector and a first negative electrode connector. The one of the host 10 and the battery pack 11 where the second pole piece assembly 13 is disposed is the second device, and the electrode connectors of the second device include a second positive electrode connector and a second negative electrode connector.

[0067] That is to say, in one case, if the first pole piece assembly 12 is disposed on the host 10 and the second pole piece assembly 13 is disposed on the battery pack 11, then the host 10 is the first device and the battery pack 11 is the second device. Or, in another case, if the first pole piece assembly 12 is disposed on the battery pack 11 and the second pole piece assembly 13 is disposed on the host 10, then the battery pack 11 is the first device and the host 10 is the second device. The first pole piece assembly 12 includes a first positive pole piece 120 and a first negative pole piece 121. The second pole piece assembly 13 has a second positive pole piece corresponding to the first positive pole piece 120 and a second negative pole piece corresponding to the first negative pole piece 121 in both the forward plugging posture and the reverse plugging posture. The so-called "the first positive pole piece 120 corresponds to the second positive pole piece" means that the first positive pole piece 120 and the second positive pole piece are aligned along the plugging direction of the battery pack 11 and the host 10 to ensure that the first positive pole piece 120 and the second positive pole piece can be in contact after plugging. At the same time, the so-called "the first negative pole piece 121 corresponds to the second negative pole piece" means that the first negative pole piece 121 and the second negative pole piece are aligned along the plugging direction of the battery pack 11 and the host 10 to ensure that the first negative pole piece 121 and the second negative pole piece can be in contact after plugging.

[0068] Among them, in the two plugging postures, the second positive electrode sheets provided by the second pole piece assembly 13 can be served by two pole pieces respectively and constantly connected to the second power receiving positive electrode, or can also be served by two pole pieces respectively and connectable to the second power receiving positive electrode in a breakable manner. Similarly, in the two plugging postures, the second negative electrode sheets provided can be served by two pole pieces respectively and constantly connected to the second power receiving negative electrode, or can also be served by two pole pieces respectively and connectable to the second power receiving negative electrode in a breakable manner. It should be emphasized that the setting positions and break-make controls of all the pole pieces serving as the second positive electrode sheet and the second negative electrode sheet need to be correspondingly set according to the setting positions of the first positive electrode sheet 120 and the second positive electrode sheet.

[0069] In other words, when the first pole piece assembly 12 is arranged on the main unit 10 and the second pole piece assembly 13 is arranged on the battery pack 11, the power receiving positive electrode 105 is the first power receiving positive electrode, the power receiving negative electrode 106 is the first power receiving negative electrode, the power supply receiving positive electrode 116 is the second power receiving positive electrode, and the power supply receiving negative electrode 117 is the second power receiving negative electrode. The first positive electrode sheet 120 of the first pole piece assembly 12 is constantly connected to the power receiving positive electrode 105, the first negative electrode sheet 121 of the first pole piece assembly 12 is constantly connected to the power receiving negative electrode 106. The second pole piece assembly 13 has a second positive electrode sheet and a second negative electrode sheet in both the forward plugging posture and the reverse plugging posture, and it is ensured that the second positive electrode sheet is electrically connected to the power supply receiving positive electrode 116, and the second negative electrode sheet is electrically connected to the power supply receiving negative electrode 117.

[0070] Or, when the first pole piece assembly 12 is arranged on the battery pack 11 and the second pole piece assembly 13 is arranged on the main unit 10, the power supply receiving positive electrode 116 is the first power receiving positive electrode, the power supply receiving negative electrode 117 is the first power receiving negative electrode, the power receiving positive electrode 105 is the second power receiving positive electrode, and the power receiving negative electrode 106 is the second power receiving negative electrode. The first positive electrode sheet 120 of the first pole piece assembly 12 is constantly connected to the power supply receiving positive electrode 116, the first negative electrode sheet 121 of the first pole piece assembly 12 is constantly connected to the power supply receiving negative electrode 117. The second pole piece assembly 13 has a second positive electrode sheet and a second negative electrode sheet in both the forward plugging posture and the reverse plugging posture, and it is ensured that the second positive electrode sheet is electrically connected to the power receiving positive electrode 105, and the second negative electrode sheet is electrically connected to the power receiving negative electrode 106.

[0071] In an alternative solution of this embodiment, the proximal side of the main body 10 is plugged into the distal side of the battery pack 11. The second positive electrode plate and the second negative electrode plate are realized through the first switchable electrode plate and the second switchable electrode plate, and the connection between the first switchable electrode plate and the connection electrode plate and the connection between the second switchable electrode plate and the connection electrode plate can be switched with each other. For example: in the forward plugging posture, the first switchable electrode plate is connected to the second connection positive electrode and serves as the second positive electrode plate, and the second switchable electrode plate is connected to the second connection negative electrode and serves as the second negative electrode plate; in the reverse plugging posture, the first switchable electrode plate is connected to the second connection negative electrode and serves as the second negative electrode plate, and the second switchable electrode plate is connected to the second connection positive electrode and serves as the second positive electrode plate.

[0072] 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 arranged on the pole piece bracket, so as to support and fix the first positive electrode plate 120 and the first negative electrode plate 121 included in the first pole piece assembly 12 through the pole piece bracket, or support and fix the first switchable electrode plate 130 and the second switchable electrode plate 131 of the second pole piece assembly 13 through the pole piece bracket. Correspondingly, 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 arranged in the slot.

[0073] When the main body 10 is plugged into the battery pack 11, the pole piece bracket extends into the slot so that the first pole piece assembly 12 contacts the second pole piece assembly 13.

[0074] It should be emphasized that the reason for providing a pole piece bracket on the proximal side of the main body 10 and a slot on the distal side of the battery pack 11 is that in order to drive the electric stapler 1, a relatively complex transmission structure needs to be arranged inside the body 100, and the transmission structure requires the body 100 to provide sufficient movement stroke space along its own length direction. Therefore, a pole piece bracket is provided on the proximal side of the main body 10, and the space arranged along the length direction inside the pole piece bracket serves as a part of the movement stroke space of the transmission structure. After the battery pack 11 is installed on the main body 10, the pole piece bracket extends into the slot of the battery pack 11, so that at least a part of the movement stroke space of the transmission structure overlaps with the battery pack in the length direction, effectively reducing the total length of the main body 10, and by providing a slot on the battery pack 11, the size of the pole piece bracket protruding relative to the main body 10 can be hidden inside the battery pack 11, which is beneficial to the miniaturization of the electric stapler 1.

[0075] It can be understood that whether in the forward plugging posture or the reverse plugging posture, the pole piece bracket and the slot need to be aligned along the plugging direction of the main body 10 and the battery pack 11 to ensure that the pole piece bracket can be inserted into the slot.

[0076] Define a three-dimensional coordinate system, where the Z-axis is collinear with the axis of the battery pack in the plugged state, the X-axis is set horizontally, the Y-axis is set vertically, and the plane where the X-axis and Y-axis are located forms four quadrants, as Figure 5 , Figure 7 , Figure 12 , Figure 14 , Figure 24 , Figure 25 , Figure 29 and Figure 30 shown.

[0077] In an alternative solution of this embodiment, as an implementation of the convertible pole piece assembly, the second pole piece assembly 13 includes two switchable pole pieces and a switching switch assembly 132. The two switchable pole pieces are respectively the first switchable pole piece 130 and the second switchable pole piece 131.

[0078] The first positive electrode piece 120 and the first negative electrode piece 121 are respectively arranged on 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 piece 120 is arranged corresponding to one of the first quadrant and the third quadrant, and the first negative electrode piece 121 is arranged corresponding to the other of the first quadrant and the third quadrant; or, the first positive electrode piece 120 is arranged corresponding to one of the second quadrant and the fourth quadrant, and the first negative electrode piece 121 is arranged corresponding to the other of the second quadrant and the fourth quadrant.

[0079] The two switchable pole pieces are respectively arranged on the second device corresponding to the same quadrants as the first positive electrode piece 120 and the first negative electrode piece 121. In other words, when the first positive electrode piece 120 and the first negative electrode piece 121 correspond to the first quadrant and the third quadrant, the first switchable pole piece 130 is arranged corresponding to one of the first quadrant and the third quadrant, and the second switchable pole piece 131 is arranged corresponding to the other of the first quadrant and the third quadrant. Or, when the first positive electrode piece 120 and the first negative electrode piece 121 are arranged corresponding to the second quadrant and the fourth quadrant, the first switchable pole piece 130 is arranged corresponding to one of the second quadrant and the fourth quadrant, and the second switchable pole piece 131 is arranged corresponding to the other of the second quadrant and the fourth quadrant.

[0080] Precisely because the quadrants corresponding to the first positive electrode sheet 120 and the first negative electrode sheet 121 are diagonally arranged, and the quadrants corresponding to the first switchable electrode sheet 130 and the second switchable electrode sheet 131 are the same as those of the first positive electrode sheet 120 and the first negative electrode sheet 121, so whether in the forward insertion posture or the reverse insertion posture, the first positive electrode sheet 120 and the first negative electrode sheet 121 can respectively correspond to one of the two switchable electrode sheets, ensuring that after insertion, the two switchable electrode sheets are respectively in contact and conduction with the first positive electrode sheet 120 and the first negative electrode sheet 121, so that the first power connection positive electrode is electrically connected to the second power connection positive electrode through the first positive electrode sheet 120 and a switchable electrode sheet, and the first power connection negative electrode is electrically connected to the second power connection negative electrode through the first negative electrode sheet 121 and the other switchable electrode sheet.

[0081] The switching switch assembly 132 is arranged on the second device. The switching switch assembly 132 has an initial state and a triggered state. In these two states, in the initial state, the first switchable electrode sheet 130 is connected to the second power connection positive electrode through the switching switch assembly 132, and the second switchable electrode sheet 131 is connected to the second power connection negative electrode through the switching switch assembly 132. In the triggered state, the second switchable electrode sheet 131 is connected to the second power connection positive electrode through the switching switch assembly 132, and the first switchable electrode sheet 130 is connected to the second power connection negative electrode through the switching switch assembly 132.

[0082] For example, if in the forward insertion posture, the first switchable electrode sheet 130 corresponds to the second quadrant and is electrically connected to the second power connection positive electrode, and the second switchable electrode sheet 131 corresponds to the fourth quadrant and is electrically connected to the second power connection negative electrode, then in the reverse insertion posture, the second switchable electrode sheet 131 corresponds to the second quadrant and is electrically connected to the second power connection positive electrode, and the first switchable electrode sheet 130 corresponds to the fourth quadrant and is electrically connected to the second power connection negative electrode. It can be seen that the first switchable electrode sheet 130 in the forward insertion posture and the second switchable electrode sheet 131 in the reverse insertion posture both correspond to the second quadrant and are both electrically connected to the second power connection positive electrode. Similarly, the second switchable electrode sheet 131 in the forward insertion posture and the first switchable electrode sheet 130 in the reverse insertion posture both correspond to the fourth quadrant and are both electrically connected to the second power connection negative electrode.

[0083] 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.

[0084] Thus, the initial state and the triggered state of the switching switch assembly 132 are respectively associated with the front insertion posture and the reverse insertion posture, which can ensure that the switchable pole pieces located in the same quadrant can be electrically connected to the contact electrodes of the second device with the same polarity, and the polarities of the two switchable pole pieces are converted through the switching switch assembly 132.

[0085] In this embodiment, in order to realize the state switching and control of the switching switch assembly 132 in the front insertion posture and the reverse insertion posture, the switching switch assembly 132 includes a triggered part, and the first device is provided with a triggering part that matches the triggered part.

[0086] In this embodiment, as an implementation of the switching switch assembly 132, the triggered part is a trigger button.

[0087] The triggering part includes a first partial surface of the first device, and the first device is provided with an avoidance part, and the avoidance part includes a second partial surface of the first device.

[0088] The second partial surface is farther away from the trigger button along the insertion direction than the first partial surface. For example, the surface of the first device facing the second device is substantially flat, the first partial surface can be flush with this plane, and the second partial surface can be recessed relative to this plane in a direction away from the second device, or the second partial surface can be flush with this plane, and the first partial surface can protrude relative to this plane in a direction towards the second device.

[0089] Thus, when the first partial surface faces the trigger button, it can contact and press the trigger button, so that the switching switch assembly 132 is switched to the triggered state; when the second partial surface faces the trigger button, it can form a gap with the trigger button, and the trigger button will not be pressed by the second partial surface, so that the switching switch assembly 132 is switched to the initial state.

[0090] Therefore, by configuring the first partial surface to face the trigger button in the front insertion posture, the switching switch assembly 132 can be switched to the triggered state in the front insertion posture. At the same time, by configuring the second partial surface to face the trigger button in the reverse insertion state, the switching switch assembly 132 can be switched to the initial state in the reverse insertion posture (this situation is not shown in the figure).

[0091] Or, refer to Figures 2A to 5 、 Figure 7 、 Figures 9A to 12 and Figure 14As shown, the second partial surface is configured to be disposed opposite to the trigger button in the forward insertion posture, so that the changeover switch assembly 132 can be switched to the initial state in the forward insertion posture. At the same time, the first partial surface is configured to be disposed opposite to the trigger button in the reverse insertion posture, so that the changeover switch assembly 132 can be switched to the trigger state in the reverse insertion posture.

[0092] In this embodiment, the changeover switch assembly 132 can be a double-pole double-throw switch. Specifically, the double-pole double-throw switch can be an integral double-pole double-throw switch, or the double-pole double-throw switch is composed of two single-pole double-throw switches combined. That is to say, as long as it is a corresponding structure that can realize the basic functions of the double-pole double-throw switch, it can be covered within the scope of the double-pole double-throw switch defined in this article.

[0093] For a clearer description, the implementation solutions of this convertible pole piece assembly are illustrated by the following Embodiment 1 and Embodiment 2.

[0094] In an alternative solution of this embodiment, as another implementation solution of the convertible pole piece assembly, the first positive pole piece 120 and the first negative pole piece 121 are respectively disposed on the first device corresponding to two adjacent quadrants of the docking surface. Specifically, the first positive pole piece 120 is disposed in the first quadrant, and the first negative pole piece 121 is disposed in the second quadrant, or the first negative pole piece 121 is disposed in the first quadrant, and the first positive pole piece 120 is disposed in the second quadrant, or the first positive pole piece 120 is disposed in the second quadrant, the first negative pole piece 121 is disposed in the third quadrant, or the first negative pole piece 121 is disposed in the second quadrant, the first positive pole piece 120 is disposed in the third quadrant, or the first positive pole piece 120 is disposed in the third quadrant, the first negative pole piece 121 is disposed in the fourth quadrant, or the first positive pole piece 120 is disposed in the fourth quadrant, the first negative pole piece 121 is disposed in the third quadrant, or the first positive pole piece 120 is disposed in the fourth quadrant, the first negative pole piece 121 is disposed in the first quadrant, or the first positive pole piece 120 is disposed in the first quadrant, the first negative pole piece 121 is disposed in the fourth quadrant.

[0095] The second positive pole piece is realized by the first optional positive pole piece and the second optional positive pole piece that are both connected to the second power connection positive pole and can be selectively connected to the power supply circuit. The second negative pole piece is realized by the first optional negative pole piece and the second optional negative pole piece that are both connected to the second power connection negative pole and can be selectively connected to the power supply circuit. For example: in the forward insertion posture, the first optional positive pole piece is connected to the power supply circuit as the second positive pole piece, and the first optional negative pole piece is connected to the power supply circuit as the second negative pole piece; in the reverse insertion posture, the second optional positive pole piece is connected to the power supply circuit as the second positive pole piece, and the second optional negative pole piece is connected to the power supply circuit as the second negative pole piece. And, the first optional positive pole piece and the second optional positive pole piece are distributed in diagonal quadrants, and the first optional negative pole piece and the second optional negative pole piece are distributed in diagonal quadrants.

[0096] Specifically, in the forward insertion posture, the first positive electrode sheet 120 is disposed in any one of the four quadrants of the corresponding 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 or counterclockwise direction.

[0097] In the forward insertion posture, the first optional positive electrode sheet 134 corresponds to the first positive electrode sheet 120. Correspondingly, the first optional negative electrode sheet 135 corresponds to the first negative electrode sheet 121. Thus, the first positive electrode sheet 120 is electrically connected to the second power receiving positive electrode through the first optional positive electrode sheet 134, and the first negative electrode sheet 121 is electrically connected to the second power receiving negative electrode through the first optional negative electrode sheet 135.

[0098] In the reverse insertion posture, the second optional positive electrode sheet 136 corresponds to the first positive electrode sheet 120. Correspondingly, the second optional negative electrode sheet 137 corresponds to the first negative electrode sheet 121. Thus, the first positive electrode sheet 120 is electrically connected to the second power receiving positive electrode through the second optional positive electrode sheet 136, and the first negative electrode sheet 121 is electrically connected to the second power receiving negative electrode through the second optional negative electrode sheet 137.

[0099] For clearer illustration, the implementation solutions of the convertible pole piece assembly are exemplified by the following Embodiment 3 and Embodiment 4.

[0100] Embodiment 1

[0101] Combined with Figures 2A to 8 and Figures 16 to 18 As shown, the first positive electrode sheet 120 and the first negative electrode sheet 121 of the first pole piece assembly 12 are disposed in the battery pack 11. The battery pack 11 is the first device, the second pole piece assembly 13 is disposed in the host 10, the host 10 is the second device, and the second pole piece assembly 13 includes a first switchable pole piece 130, a second switchable pole piece 131, and a switching switch assembly 132.

[0102] The battery pack 11 includes a battery pack housing and a power supply module. The battery pack housing includes a front cover 110 and a rear cover 111 that are snapped together. An installation cavity is formed inside the battery pack housing formed by the snap - fitting of the front cover 110 and the rear cover 111.

[0103] The power supply module is disposed in the installation cavity. The power supply module includes four battery cells 1140 connected in series in sequence through nickel sheets 1141. In Figure 4 it, the positive electrode of the battery cell 1140 located in the lower right corner forms a power supply power receiving positive electrode 116, that is, the first power receiving positive electrode, and the negative electrode of the battery cell 1140 located in the upper right corner forms a power supply power receiving negative electrode 117, that is, the first power receiving negative electrode.

[0104] Combined with Figure 3 and Figure 4As shown in the figure, a first slot 112, a guiding slot 118, a second slot 113, and an avoidance slot 14 are formed on the front cover 110. Among them, the avoidance slot 14 serves as an avoidance part, and the plane on the side of the front cover 110 opposite to the avoidance slot serves as a triggering part. In the correct 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 guiding slot 118 is located between the first slot 112 and the second slot 113, and the avoidance slot 14 is arranged below the first slot 112 and the second slot 113.

[0105] One end of the first positive electrode sheet 120 is electrically connected to the positive electrode (power supply and power connection positive electrode 116) of an end cell 1140, 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 (power supply and power connection negative electrode 117) of another end cell 1140, and the other end of the first negative electrode sheet 121 extends into the second slot 113.

[0106] Combined with Figure 2B As shown in the figure, 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 support 1001, a second pole piece support 1002, and a guiding block 1003. The first pole piece support 1001 and the second pole piece support 1002 are arranged at intervals along the x-axis direction of the docking surface. The guiding block 1003 is located between the first pole piece support 1001 and the second pole piece support 1002. The switching switch assembly 132 is embedded in the cover plate 1000 and is located below the guiding block 1003. The trigger button of the switching switch assembly 132 protrudes from the cover plate 1000.

[0107] The first switchable pole piece 130 is arranged on the upper surface of the first pole piece support 1001, and the second switchable pole piece 131 is arranged on the lower surface of the second pole piece support 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.

[0108] As Figure 6 、 Figure 8 and Figures 16 to 18 As shown in the figure, the switching 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.

[0109] 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.

[0110] As Figure 5 and Figure 6 shown, when the host 10 is plugged into the battery pack 11 in the correct insertion posture, the avoidance groove 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 knife 1325 electrically connects the first common pin 1322 to the first normally closed pin 1324, and the second single-pole knife 1331 electrically connects the second common pin 1328 to the second normally closed pin 1330.

[0111] Thus, the power supply connection positive electrode 105 is sequentially electrically connected to the power supply connection positive electrode 116 through the first common pin 1322, the first single-pole knife 1325, the first normally closed pin 1324, the first switchable pole piece 130 and the first positive electrode piece 120. At the same time, the power supply connection negative electrode 106 is sequentially electrically connected to the power supply connection negative electrode 117 through the second common pin 1328, the second single-pole knife 1331, the second normally closed pin 1330, the second switchable pole piece 131 and the first negative electrode piece 121.

[0112] As Figure 7 and Figure 8 shown, when the host 10 is plugged into the battery pack 11 in the reverse insertion posture, the upper plane of the front cover 110 corresponds to and presses the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132, and the switch assembly 132 switches to the triggered state. In the triggered state, the first single-pole knife 1325 electrically connects the first common pin 1322 to the first normally open pin 1323, and the second single-pole knife 1331 electrically connects the second common pin 1328 to the second normally open pin 1329.

[0113] The power supply connection positive electrode 105 is sequentially electrically connected to the power supply connection positive electrode 116 through the first common pin 1322, the first single-pole knife 1325, the first normally open pin 1323, the second switchable pole piece 131 and the first positive electrode piece 120. At the same time, the power supply connection negative electrode 106 is sequentially electrically connected to the power supply connection negative electrode 117 through the second common pin 1328, the second single-pole knife 1331, the second normally open pin 1329, the first switchable pole piece 130 and the first negative electrode piece 121.

[0114] Embodiment 2

[0115] Combined with Figures 9A to 18As shown, the first positive electrode sheet 120 and the first negative electrode sheet 121 of the first electrode sheet assembly 12 are disposed on the main body 10, the main body 10 being the first device, and the second electrode sheet assembly 13 is disposed on the battery pack 11, the battery pack 11 being the second device. The second electrode sheet assembly 13 includes a first switchable electrode sheet 130, a second switchable electrode sheet 131, and a switching switch assembly 132.

[0116] As Figure 9B shown, a cover plate 1000 is disposed on the proximal side of the main body 10. The cover plate 1000 is provided with an avoidance groove 14, a first electrode sheet bracket 1001, a second electrode sheet bracket 1002, and a guiding block 1003. The first electrode sheet bracket 1001 and the second electrode sheet bracket 1002 are spaced apart along the x-axis direction of the docking surface. The guiding block 1003 is located between the first electrode sheet bracket 1001 and the second electrode sheet bracket 1002, and the avoidance groove 14 is disposed below the guiding block 1003. Among them, the avoidance groove 14 serves as an avoidance portion, and the plane on one side of the cover plate 1000 opposite to the avoidance groove serves as a triggering portion.

[0117] The first positive electrode sheet 120 is disposed on the upper surface of the first electrode sheet bracket 1001, and the first negative electrode sheet 121 is disposed on the lower surface of the second electrode sheet bracket 1002, so that the first positive electrode sheet 120 and the first negative electrode sheet 121 respectively correspond to the second quadrant and the fourth quadrant of the docking surface.

[0118] As Figure 10 and Figure 11 shown, the battery pack 11 includes a battery pack housing and a power supply module. The battery pack housing includes a front cover 110 and a rear cover 111 that are buckled together. An installation cavity is formed inside the battery pack housing formed by the buckling of the front cover 110 and the rear cover 111. The power supply module is disposed in the installation cavity. The power supply module includes four battery cells 1140 that are sequentially connected in series through nickel sheets 1141. In Figure 11 it, the positive electrode of the battery cell 1140 in the lower right corner forms a power supply connection positive electrode 116, that is, the second connection positive electrode, and the negative electrode of the battery cell 1140 in the upper right corner forms a power supply connection negative electrode 117, that is, the second connection negative electrode.

[0119] To facilitate the conversion of the connection relationship between the power supply module and the first switchable electrode sheet and the second switchable electrode sheet respectively, the power supply module further 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 (power supply connection positive electrode 116) of one end battery cell 1140, and the battery cell output negative electrode sheet 1143 is electrically connected to the negative electrode (power supply connection negative electrode 117) of the other end battery cell 1140.

[0120] The front cover 110 is provided with a switching switch assembly 132, a first slot 112, a guiding slot 118 and a second slot 113. In the front 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 guiding slot 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.

[0121] 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.

[0122] As Figure 11 、 Figure 13 and Figure 15 shown, the switching 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, and 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, and the second common pin 1328 is electrically connected to the second switchable pole piece 131.

[0123] The first normally closed pin 1324 and the second normally open pin 1329 are both electrically connected to the positive electrode piece 1142 of the battery cell output 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 negative electrode piece 1143 of the battery cell output through the second circuit board 133.

[0124] As Figure 12 and Figure 13 shown, when the host 10 is plugged into the battery pack 11 in the front insertion posture, the avoidance slot 14 corresponds to the first trigger button 1321 and the second trigger button 1327 of the switching switch assembly 132, and the switching 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.

[0125] Thus, the power supply positive connection terminal 116 is electrically connected to the power consumption positive connection terminal 105 in sequence through the cell output positive electrode plate 1142, the first normally closed pin 1324, the first single-pole switch 1325, the first common pin 1322, the first switchable electrode plate 130, and the first positive electrode plate 120. At the same time, the power supply negative connection terminal 117 is electrically connected to the power consumption negative connection terminal 106 in sequence through the cell output negative electrode plate 1143, the second normally closed pin 1330, the second single-pole switch 1331, the second common pin 1328, the second switchable electrode plate 131, and the first negative electrode plate 121.

[0126] As Figure 14 and Figure 15 shown, when the host 10 is plugged into the battery pack 11 in a reverse insertion posture, the upper plane of the cover plate 1000 corresponds to and presses the first trigger button 1321 and the second trigger button 1327 of the switch assembly 132, and the switch assembly 132 is switched to the triggered state. In the triggered state, the first single-pole switch 1325 electrically connects the first common pin 1322 to the first normally open pin 1323, and the second single-pole switch 1331 electrically connects the second common pin 1328 to the second normally open pin 1329.

[0127] Thus, the power supply positive connection terminal 116 is electrically connected to the power consumption positive connection terminal 105 in sequence through the cell output positive electrode plate 1142, the second normally open pin 1329, the second single-pole switch 1331, the second common pin 1328, the second switchable electrode plate 131, and the first positive electrode plate 120. At the same time, the power supply negative connection terminal 117 is electrically connected to the power consumption negative connection terminal 106 in sequence through the cell output negative electrode plate 1143, the first normally open pin 1323, the first single-pole switch 1325, the first common pin 1322, the first switchable electrode plate 130, and the first negative electrode plate 121.

[0128] Embodiment 3

[0129] Combined with Figures 19 to 25 shown, both the first positive electrode plate 120 and the first negative electrode plate 121 of the first electrode plate assembly 12 are disposed in the battery pack 11, the battery pack 11 is the first device, the second electrode plate assembly 13 is disposed in the host 10, the host 10 is the second device, and the second electrode plate assembly 13 includes a first optional positive electrode plate 134, a second optional positive electrode plate 136, a first optional negative electrode plate 135, and a second optional negative electrode plate 137.

[0130] As Figures 19 to 21As shown, a cover plate 1000 is provided on the proximal side of the host 10. 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 arranged at intervals 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.

[0131] The first optional positive pole piece 134 and the first optional negative pole piece 135 are respectively arranged on the upper surface and the lower surface of the first pole piece bracket 1001, so that the first optional positive pole piece 134 and the first optional negative pole piece 135 are respectively arranged corresponding to the second quadrant and the third quadrant of the docking surface. The second optional negative pole piece 137 and the second optional positive pole piece 136 are respectively arranged on the upper surface and the lower surface of the second pole piece bracket 1002, so that the second optional negative pole piece 137 and the second optional positive pole piece 136 are respectively arranged corresponding to the first quadrant and the fourth quadrant of the docking surface.

[0132] Among them, the first optional positive pole piece 134 and the second optional positive pole piece 136 can be electrically connected to the power-consuming power connection positive electrode 105 through wires or conductive sheets respectively. Or, as Figure 20 and Figure 21 shown, the power-consuming power connection positive electrode 105 is integrated on the first circuit board 107, and both the first optional positive pole piece 134 and the second optional positive pole piece 136 are electrically connected to the power-consuming power connection positive electrode 105 on the first circuit board 107.

[0133] Similarly, the first optional negative pole piece 135 and the second optional negative pole piece 137 can be electrically connected to the power-consuming power connection negative electrode 106 through wires respectively. Or, as Figure 20 and Figure 21 shown, the power-consuming power connection negative electrode 106 is integrated on the second circuit board 133, and both the first optional negative pole piece 135 and the second optional negative pole piece 137 are electrically connected to the power-consuming power connection negative electrode 106 on the second circuit board 133.

[0134] As Figure 22 and Figure 23 shown, the battery pack 11 includes a battery pack housing and a power supply module. The battery pack housing includes a front cover 110 and a rear cover 111 that are buckled together. An installation cavity is formed inside the battery pack housing formed by the buckling of the front cover 110 and the rear cover 111. The power supply module is arranged in the installation cavity. The power supply module includes four battery cells 1140 that are sequentially connected in series through nickel sheets 1141. In Figure 23 it, the positive electrode of the battery cell 1140 located in the upper right corner forms a power supply power connection positive electrode 116, that is, the first power connection positive electrode, and the negative electrode of the battery cell 1140 located in the lower right corner forms a power supply power connection negative electrode 117, that is, the first power connection negative electrode.

[0135] The front cover 110 is provided with a first slot 112, a guiding slot 118 and a second slot 113. The first slot 112 and the second slot 113 are sequentially arranged at intervals along the x direction of the docking surface, and the guiding slot 118 is located between the first slot 112 and the second slot 113.

[0136] One end of the first positive electrode sheet 120 extends into the installation cavity and is electrically connected to the power supply connection positive electrode 116, and one end of the first negative electrode sheet 121 extends into the installation cavity and is electrically connected to the power supply connection negative electrode 117; the other ends of the first positive electrode sheet 120 and the first negative electrode sheet 121 are both arranged in the first slot 112 and are relatively arranged at intervals along the y direction of the docking surface. The second slot 113 is empty for accommodating the optional positive electrode sheet and the optional negative electrode sheet that do not participate in the electrical path in the plugged state.

[0137] Thus, in the positive plugging posture, the first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively located in the second quadrant and the third quadrant, and in the reverse plugging posture, the first positive electrode sheet 120 and the first negative electrode sheet 121 are respectively located in the fourth quadrant and the first quadrant.

[0138] In view of this, as Figure 24 and Figure 20 shown, when the host 10 is plugged into the battery pack 11 in the positive plugging posture, the first pole piece bracket 1001, the first optional positive electrode sheet 134 and the first optional negative electrode sheet 135 are inserted into the first slot 112. Thus, the first positive electrode sheet 120 and the first optional positive electrode sheet 134 are in contact and conduct electricity, and the first negative electrode sheet 121 and the first optional negative electrode sheet 135 are in contact and conduct electricity. Furthermore, the power connection positive electrode 105 sequentially passes through the first optional positive electrode sheet 134 and the first positive electrode sheet 120 to form an electrical connection relationship with the power supply connection positive electrode 116, and the power connection negative electrode 106 sequentially passes through the first optional negative electrode sheet 135 and the first negative electrode sheet 121 to form an electrical connection relationship with the power supply connection negative electrode 117. At the same time, the second pole piece bracket 1002, the second optional positive electrode sheet 136 and the second optional negative electrode sheet 137 are inserted into the second slot 113 and are in an idle state, that is, they do not participate in the electrical path.

[0139] As Figure 25 and Figure 20As shown, when the host 10 is plugged into the battery pack 11 in an inverse insertion posture, the second pole piece bracket 1002, the second optional positive pole piece 136, and the second optional negative pole piece 137 are inserted into the first slot 112. Thus, the first positive pole piece 120 and the second optional positive pole piece 136 are in contact conduction corresponding to the fourth quadrant, and the first negative pole piece 121 and the second optional negative pole piece 137 are in contact conduction corresponding to the first quadrant. Furthermore, the power consumption power connection positive electrode 105 is sequentially electrically connected to the power supply power connection positive electrode 116 through the second optional positive pole piece 136 and the first positive pole piece 120, and the power consumption power connection negative electrode 106 is sequentially electrically connected to the power supply power connection negative electrode 117 through the second optional negative pole piece 137 and the first negative pole piece 121. At the same time, the first pole piece bracket 1001, the first optional positive pole piece 134, and the first optional negative pole piece 135 are inserted into the second slot 113 and are in an idle state, that is, they do not participate in the electrical path.

[0140] Embodiment 4

[0141] See Figures 26 to 30 As shown, the first positive pole piece 120 and the first negative pole piece 121 of the first pole piece assembly 12 are both arranged on the host 10, and the second pole piece assembly 13 is arranged on the battery pack 11. The second pole piece assembly 13 includes a first optional positive pole piece 134, a second optional positive pole piece 136, a first optional negative pole piece 135, and a second optional negative pole piece 137.

[0142] As Figure 26 As shown, a cover plate 1000 is arranged on the proximal side of the host 10. A first pole piece bracket 1001 and a guide block 1003 are arranged on the cover plate 1000. The guide block 1003 is arranged on the side of the first pole piece bracket 1001 along the x-axis direction of the docking surface.

[0143] The first positive pole piece 120 and the first negative pole piece 121 are respectively arranged on the upper surface and the lower surface of the first pole piece bracket 1001, so that the first positive pole piece 120 and the first negative pole piece 121 are respectively arranged corresponding to the second quadrant and the third quadrant of the docking surface. The first positive pole piece 120 is electrically connected to the power consumption power connection positive electrode 105, that is, electrically connected to the first power connection positive electrode. The first negative pole piece 121 is electrically connected to the power consumption power connection negative electrode 106, that is, electrically connected to the first power connection negative electrode.

[0144] See Figure 27 and Figure 28 As shown, the battery pack 11 includes a battery pack housing and a power supply module. The battery pack housing includes a front cover 110 and a rear cover 111 that are snapped together. An installation cavity is formed inside the battery pack housing formed by the snap-together of the front cover 110 and the rear cover 111. The power supply module is arranged in the installation cavity. The power supply module includes four battery cells 1140 that are sequentially connected in series through nickel sheets 1141. Among them, Figure 28Among them, the negative electrode of the battery cell 1140 located in the lower right corner is the power supply connection negative electrode 117, that is, the second connection negative electrode, and the positive electrode of the battery cell 1140 located in the upper right corner is the power supply connection positive electrode 116, that is, the second connection positive electrode.

[0145] 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 arranged at intervals along the x direction of the docking surface, and the guide slot 118 is located between the first slot 112 and the second slot 113.

[0146] One end of the first optional positive electrode piece 134 extends into the installation cavity and is electrically connected to the power supply connection positive electrode 116. One end of the first optional negative electrode piece 135 extends into the installation cavity and is electrically connected to the power supply connection negative electrode 117. The other ends of the first optional positive electrode piece 134 and the first optional negative electrode piece 135 are both arranged in the first slot 112 and are relatively spaced along the y direction of the docking surface.

[0147] One end of the second optional positive electrode piece 136 extends into the installation cavity and is electrically connected to the power supply connection positive electrode 116. One end of the second optional negative electrode piece 137 extends into the installation cavity and is electrically connected to the power supply connection negative electrode 117. The other ends of the second optional positive electrode piece 136 and the second optional negative electrode piece 137 are both arranged in the second slot 113 and are relatively spaced along the y direction of the docking surface.

[0148] In the positive insertion posture, the first optional positive electrode piece 134 and the first optional negative electrode piece 135 are respectively arranged corresponding to the second quadrant and the third quadrant, and the second optional positive electrode piece 136 and the second optional negative electrode piece 137 are respectively arranged corresponding to the fourth quadrant and the first quadrant; it can be understood that in the reverse insertion posture, the first optional positive electrode piece 134 and the first optional negative electrode piece 135 are respectively located in the fourth quadrant and the first quadrant, and the second optional positive electrode piece 136 and the second optional negative electrode piece 137 are respectively located in the second quadrant and the third quadrant.

[0149] As Figure 29 As shown, when the host 10 is plugged into the battery pack 11 in the positive insertion posture, the first pole piece bracket 1001, the first positive electrode piece 120 and the first negative electrode piece 121 are inserted into the first slot 112. Thus, in the first slot 112, the first positive electrode piece 120 is in contact and conduction with the first optional positive electrode piece 134, and the first negative electrode piece 121 is in contact and conduction with the first optional negative electrode piece 135.

[0150] Furthermore, the power supply connection positive electrode 105 is electrically connected to the power supply connection positive electrode 116 through the first positive electrode sheet 120 and the first optional positive electrode sheet 134 in sequence, and the power supply connection negative electrode 106 is electrically connected to the power supply connection negative electrode 117 through the first negative electrode sheet 121 and the first optional negative electrode sheet 135 in sequence. 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.

[0151] As Figure 30 shown, when the host 10 and the battery pack 11 are plugged in in a reverse insertion posture, the first pole piece bracket 1001, the first positive electrode sheet 120 and the first negative electrode sheet 121 are inserted into the second slot 113. Therefore, from the perspective of the unchanged position of the host 10, in the second slot 113, the first positive electrode sheet 120 is in contact and conducts with the second optional positive electrode sheet 136, and the first negative electrode sheet 121 is in contact and conducts with the second optional negative electrode sheet 137.

[0152] Furthermore, the power supply connection positive electrode 105 is electrically connected to the power supply connection positive electrode 116 through the first positive electrode sheet 120 and the second optional positive electrode sheet 136 in sequence, and the power supply connection negative electrode 106 is electrically connected to the power supply connection negative electrode 117 through the first negative electrode sheet 121 and the second optional negative electrode sheet 137 in sequence. 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.

[0153] The electric surgical instrument provided by this application includes a host, a battery pack and a convertible pole piece assembly. The host and the battery pack can be plugged in forward or backward. The convertible pole piece assembly is arranged between the host and the battery pack to ensure that the host and the battery pack can be electrically connected through the convertible pole piece assembly in both the forward insertion posture and the reverse insertion posture. And there is no need to set an anti-misinsertion structure, nor to adjust the relative position between the battery pack and the host for the anti-misinsertion structure. Therefore, the anti-misinsertion structure is omitted, and the assembly efficiency and assembly convenience of the host and the battery pack are improved.

[0154] It should be noted that the above embodiments illustrate the electric surgical instrument by taking an electric stapler as an example, and the above embodiments can be applied to other surgical instruments with a battery pack.

[0155] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0156] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation manners or changes made without departing from the technical spirit of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electrosurgical instrument, characterized in that, It includes a host, a battery pack, and a convertible pole piece assembly; the battery pack is detachably plugged into the host in a forward plugging posture or a reverse plugging 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 arranged on the host, and the other is arranged on the battery pack; The first pole piece assembly includes a first positive pole piece and a first negative pole piece. The second pole piece assembly has 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 both the forward plugging posture and the reverse plugging posture, so that the first positive pole piece is in contact and conduction with the second positive pole piece, and the first negative pole piece is in contact and conduction with the second negative pole piece to form an electrical connection between the host and the battery pack; The one of the host and the battery pack where the first pole piece assembly is arranged is the first device. The second pole piece assembly further includes a switching switch assembly, and the switching switch assembly includes a triggered part, and the first device is provided with a triggering part that matches the triggered part; The triggered part is a trigger button. The triggering part includes a first partial surface. The first device is further provided with an avoidance part, and the avoidance part includes a second partial surface, and the second partial surface is farther from the trigger button along the plugging direction than the first partial surface; The switching switch assembly has an initial state and a triggered state that are switched in response to the conversion between the forward plugging posture and the reverse plugging posture. In one of the forward plugging posture and the reverse plugging posture, the first partial surface faces and contacts the trigger button, so that the switching switch assembly is in the triggered state; In the other of the forward plugging posture and the reverse plugging posture, the second partial surface faces the trigger button and forms a gap with the trigger button, so that the trigger button cannot be triggered, so that the switching switch assembly is in the initial state.

2. The electrosurgical instrument according to claim 1, wherein The electrical connection electrodes of the first device include a first electrical connection positive electrode and a first electrical connection negative electrode. The first positive pole piece is electrically connected to the first electrical connection positive electrode, and the first negative pole piece is electrically connected to the first electrical connection negative electrode; the one of the host and the battery pack where the second pole piece assembly is arranged is the second device, and the electrical connection electrodes of the second device include a second electrical connection positive electrode and a second electrical connection negative electrode; In the forward plugging posture and the reverse plugging posture, the second positive pole piece is electrically connected to the second electrical connection positive electrode, and the second negative pole piece is electrically connected to the second electrical connection negative electrode.

3. The electrosurgical 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, the Z-axis is collinear with the axis of the battery pack in the plugged state, the X-axis is arranged horizontally, the Y-axis is arranged vertically, and the plane where the X-axis and the Y-axis are located forms four quadrants; The quadrant corresponding to the first positive pole piece and the quadrant corresponding to the first negative pole piece are arranged diagonally; the quadrant corresponding to the first switchable pole piece is the same as the quadrant corresponding to the first positive pole piece, and the quadrant corresponding to the second switchable pole piece is the same as the quadrant corresponding to the first negative pole piece; In the initial state, the first switchable pole piece is connected to the second power connection positive electrode through the switch assembly, and the second switchable pole piece is connected to the second power connection negative electrode through the switch assembly, where the first switchable pole piece is the second positive electrode piece and the second switchable pole piece is the second negative electrode piece; In the triggered state, the second switchable pole piece is connected to the second power connection positive electrode through the switch assembly, and the first switchable pole piece is connected to the second power connection negative electrode through the switch assembly, where the second switchable pole piece is the second positive electrode piece and the first switchable pole piece is the second negative electrode piece.

4. The electrosurgical instrument according to claim 1, wherein The first local surface and the second local surface are arranged offset in the vertical direction or the horizontal direction.

5. The electrosurgical instrument according to claim 1, wherein, The switch assembly is a double-pole double-throw switch.

6. The electrosurgical 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 state, the X-axis is arranged horizontally, the Y-axis is arranged vertically, and the plane where the X-axis and the Y-axis are located forms four quadrants; The quadrant corresponding to the first positive electrode piece and the quadrant corresponding to the second negative electrode piece are adjacent; the second pole piece assembly includes a first optional positive electrode piece and a second optional positive electrode piece arranged in diagonal quadrants and a first optional negative electrode piece and a second optional negative electrode piece arranged in the other two diagonal quadrants. The first optional positive electrode piece and the second optional positive electrode piece are both electrically connected to the second power connection positive electrode, and the first optional negative electrode and the second optional negative electrode are both electrically connected to the second power connection negative electrode; In the forward plugging attitude, the first optional positive electrode piece corresponds to the first positive electrode piece, and the first optional negative electrode piece corresponds to the first negative electrode piece, where the first optional positive electrode piece is the second positive electrode piece and the first optional negative electrode is the second negative electrode piece; in the reverse plugging attitude, the second optional positive electrode piece corresponds to the first positive electrode piece, and the second optional negative electrode piece corresponds to the first negative electrode piece, where the second optional positive electrode piece is the second positive electrode piece and the second optional negative electrode is the second negative electrode piece.

7. The electrosurgical instrument according to any one of claims 1 to 6, characterized in that, The proximal side of the main body is plugged into the distal side of the battery pack; A pole piece bracket is provided on the proximal side of the main body, and a slot is provided on the distal side of the battery pack; the first pole piece assembly is arranged on the pole piece bracket, and the second pole piece assembly is arranged in the slot; or the second pole piece assembly is arranged on the pole piece bracket, and the first pole piece assembly is arranged in the slot; When the main body is plugged into the battery pack, the pole piece bracket extends into the slot so that the first pole piece assembly is in contact and conduction with the second pole piece assembly.

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