Electric surgical instrument with detachable battery pack

Abstract

The utility model provides an electric surgical instrument which comprises an instrument body and a battery pack, the instrument body is provided with a battery bin capable of containing the battery pack and a protruding component arranged in the battery bin, and the battery pack comprises a battery base and a battery pack capable of being attached to the battery base. The battery pack comprises a shell, a first anode and a first cathode which are positioned in the shell, a discharge drain electrode and an insulating part, the discharge drain electrode interacts with the first cathode and the first anode through the insulating part respectively, or interacts with one of the first cathode and the first anode and is electrically connected with the other one of the first cathode and the first anode at the same time, and when the battery pack is installed in the battery compartment, the discharge drain electrode is electrically connected with the shell. The protruding member drives the insulator to separate from the first cathode and / or the first anode and the discharge drain to electrically connect the first anode to the first cathode through the discharge drain. The utility model solves the problems of environmental pollution and potential safety hazard caused by incomplete power consumption of the battery pack of the electric surgical instrument.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to an electric surgical instrument with detachable battery pack. BACKGROUND

[0002] In the medical field, electric surgical instruments, as an advanced surgical instrument, have been widely used in various surgeries due to their efficient and precise operation performance. However, as the popularity of electric surgical instruments, the disposal of their battery packs has become increasingly prominent.

[0003] Traditional electric surgical instruments usually use disposable battery packs or rechargeable battery packs as energy supply. After the surgery is completed, if the power in the battery pack is not completely consumed, the remaining power becomes a potential source of environmental pollution. On the one hand, disposable battery packs are often discarded after use, and the chemicals in them may cause long-term pollution to the environment; on the other hand, even if the rechargeable battery pack is not charged in time and used again, the internal electric energy will gradually dissipate, eventually converting into useless heat energy released to the environment, causing energy waste.

[0004] In addition, improper disposal of battery packs can also cause safety problems. For example, randomly discarded battery packs may cause fires due to short circuits, overheating, etc., posing a threat to people's life and property safety.

[0005] Therefore, how to effectively dispose of the battery power in electric surgical instruments that is not completely consumed, reduce environmental pollution and safety hazards, has become a problem to be solved in the current medical field. SUMMARY

[0006] The utility model aims at providing an electric surgical instrument with detachable battery pack to solve the problem of environmental pollution and safety hazards caused by incomplete consumption of battery power in the prior art electric surgical instrument.

[0007] In order to achieve the above purpose of the utility model, an embodiment of the utility model provides an electric surgical instrument with detachable battery pack, which comprises an instrument body and a battery pack, the instrument body has a battery compartment capable of accommodating the battery pack and a protruding member arranged in the battery compartment, wherein the battery pack comprises a battery base and a battery pack attachable to the battery base, the battery pack comprises a shell, a first anode and a first cathode positioned in the shell, a discharge drain and an insulating piece, the discharge drain interacts with the first cathode and the first anode through the insulating piece, or interacts with one of them through the insulating piece while being electrically connected with the other one, when the battery pack is installed in the battery compartment, the protruding member drives the insulating piece to separate from the first cathode and / or the first anode and the discharge drain, so as to electrically connect the first anode to the first cathode through the discharge drain.

[0008] As a further improvement of an embodiment of the present application, the discharge drain abuts against the first cathode and the first anode through the insulating member respectively, or abuts against one of them while being electrically connected to the other one before the battery pack is installed into the battery compartment.

[0009] As a further improvement of an embodiment of the present application, the insulating member has an isolation part abutting between the first cathode and the discharge drain and / or the first anode and the discharge drain, and an abutting part connected to the isolation part, the abutting part being located on the movement track of the protruding member and used to abut against the protruding member when the battery pack is installed into the battery compartment.

[0010] As a further improvement of an embodiment of the present application, the battery compartment has an opening towards the proximal end, and the battery base seals the opening when the battery pack is installed into the battery compartment.

[0011] As a further improvement of an embodiment of the present application, the battery compartment has a bottom wall relative to the opening, and the protruding member is provided as an installation column protruding from the bottom wall towards the opening, and the battery pack is sleeved on the installation column when the battery pack is installed into the battery compartment.

[0012] As a further improvement of an embodiment of the present application, the battery pack includes at least one group of batteries, and each group of the at least one group of batteries is electrically connected to the first anode and the first cathode to form a closed circuit, or each group of the at least one group of batteries is connected in series and / or in parallel and electrically connected to the first anode and the first cathode to form a closed circuit.

[0013] As a further improvement of an embodiment of the present application, the housing has a containing space containing the installation column, and the at least one group of batteries is arranged in the housing and located at the side of the containing space, and the abutting part is located in the containing space.

[0014] As a further improvement of an embodiment of the present application, the discharge drain includes a first contact and a second contact, and at least one resistive element is electrically connected to the first contact and the second contact, and the discharge drain electrically connects the first anode to the first cathode through the at least one resistive element when the battery pack is installed into the battery compartment.

[0015] As a further improvement of an embodiment of the present application, the battery pack includes a second anode and a second cathode positioned in the housing, and the discharge drain electrically connects the second anode to the second cathode when the battery pack is installed into the battery compartment.

[0016] As a further improvement of the embodiment of the present application, the instrument body comprises an end effector and a handle, the handle is operatively coupled to the end effector, the handle comprises a trigger for actuating the end effector, and the battery compartment is arranged on the handle, when the battery pack is installed into the battery compartment, the battery pack is in electrical contact with at least one of the handle and the end effector.

[0017] Compared with the prior art, the present application has the beneficial effects that:

[0018] The insulation member is driven to move by the protruding member, so that the first anode is electrically connected with the first cathode through the discharge drain. In turn, the battery pack can be discharged through the discharge drain, so as to avoid environmental pollution caused by the abandoned battery pack and reduce the safety hazard. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure schematic diagram of the electric surgical instrument provided by the embodiment of the present application is shown in FIG. 1.

[0020] Figure 2 The structure schematic diagram of the electric surgical instrument in FIG. 1 is shown in FIG. 2. Figure 1 The structure schematic diagram of the electric surgical instrument in FIG. 1 is shown in FIG. 3.

[0021] Figure 3 The cross-sectional structure schematic diagram of the electric surgical instrument in FIG. 1 is shown in FIG. 4. Figure 2 The structure schematic diagram of the electric surgical instrument in FIG. 1 is shown in FIG. 5.

[0022] Figure 4 The enlarged view of M in FIG. 5 is shown in FIG. 6. Figure 3 The structure schematic diagram of the electric surgical instrument in FIG. 1 is shown in FIG. 7.

[0023] Figure 5 The structure schematic diagram of the electric surgical instrument in FIG. 1 is shown in FIG. 8. Figure 3 The structure schematic diagram of the electric surgical instrument in FIG. 1 is shown in FIG. 9.

[0024] Figure 6 The structure schematic diagram of the battery pack in FIG. 1 is shown in FIG. 10. Figure 3 The structure schematic diagram of the battery pack in FIG. 1 is shown in FIG. 11.

[0025] Figure 7 The structure schematic diagram of the battery pack in FIG. 1 is shown in FIG. 12. Figure 6 The structure schematic diagram of the battery pack in FIG. 1 is shown in FIG. 13.

[0026] Figure 8 The structure schematic diagram of the discharge drain in FIG. 1 is shown in FIG. 14. Figure 3 The structure schematic diagram of the discharge drain in FIG. 1 is shown in FIG. 15.

[0027] Figure 9a The circuit schematic diagram of the electric surgical instrument in FIG. 1 is shown in FIG. 16. 9b ​

[0028] Figure 10a One embodiment of a simplified circuit diagram of a battery pack including a discharge drain;

[0029] Figure 10b Another embodiment of a simplified circuit diagram of a battery pack including a discharge drain;

[0030] Figure 11 An embodiment of a simplified circuit diagram of a battery pack including a first discharge drain and a second discharge drain is shown.

[0031] The above description of the drawings includes the following reference numerals:

[0032] 1. The device itself;

[0033] 11. End effector;

[0034] 12. handle;

[0035] 121. Battery compartment;

[0036] 1211. protruding member;

[0037] 1212, contact;

[0038] 12131, 12132, first set of contacts;

[0039] 12141, 12142, the second set of contacts;

[0040] 122. Trigger;

[0041] 2. Battery pack;

[0042] 21. Battery base;

[0043] 22, 23, 24, 25, 26, battery pack;

[0044] 233. Battery;

[0045] 242, 253, 264, first battery;

[0046] 243, 254, 265, second battery pack;

[0047] 255, 266, the third group of batteries;

[0048] 256, fourth battery pack;

[0049] 2431, 2432, 2421, 2422, single battery;

[0050] 2331, 246, 263, battery contacts;

[0051] 2571, 2572, the first set of battery contacts;

[0052] 2573, 2574, second set of battery contacts;

[0053] 221, housing;

[0054] 2211, cover plate;

[0055] 2212, side wall;

[0056] 222, first anode;

[0057] 223, first cathode;

[0058] 224, 231, 241, discharge drain;

[0059] 251, 261, first discharge drain;

[0060] 252, 262, second discharge drain;

[0061] 2241, first contact;

[0062] 2242, second contact;

[0063] 225. Insulation parts;

[0064] 2251, Isolation Department;

[0065] 2252. Contact part;

[0066] 226. Resistor element;

[0067] 2412, 2512, 2613, first resistance element;

[0068] 2414, 2522, 2614, second resistance element;

[0069] 2622, third resistance element;

[0070] 232, 2611, 2612, 2621, switches;

[0071] 2411, 2511, first switch;

[0072] 2413, 2521, second switch. DETAILED DESCRIPTION

[0073] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0074] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0075] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0076] In order to solve the problem in the prior art that the power of the battery pack of the electric surgical instrument is not completely consumed, causing environmental pollution and safety hazards, the utility model provides an electric surgical instrument.

[0077] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. Example 1

[0078] like Figure 1-8 As shown, the utility model provides an electric surgical instrument with a detachable battery pack 2, comprising an instrument body 1 and a battery pack 2, wherein the instrument body 1 has a battery compartment 121 for accommodating the battery pack 2 and a protruding member 1211 provided in the battery compartment 121, wherein the battery pack 2 comprises a battery base 21 and a battery pack 22 attachable to the battery base 21, the battery pack 22 comprises a shell 221, a first anode 222 and a first cathode 223 positioned in the shell 221, a discharge drain 224 and an insulating member 225, the discharge drain 224 interacting with the first cathode 223 and the first anode 222 respectively through the insulating member 225, or interacting with one of them through the insulating member 225 while being electrically connected to the other.

[0079] When the battery pack 2 is installed in the battery compartment 121 , the protruding member 1211 drives the insulating member 225 to separate from the first cathode 223 and / or the first anode 222 and the discharge drain 224 , so as to electrically connect the first anode 222 to the first cathode 223 through the discharge drain 224 .

[0080] It can be understood that before the battery pack 2 is installed in the battery compartment 121, the discharge drain 224 interacts with the first cathode 223 and the first anode 222 respectively through the insulating member 225; or, the discharge drain 224 interacts with the first cathode 223 through the insulating member 225, and at the same time, the discharge drain 224 is directly electrically connected to the first anode 222; or, the discharge drain 224 interacts with the first anode 222 through the insulating member 225, and at the same time, the discharge drain 224 is directly electrically connected to the first cathode 223.

[0081] As set forth above, the insulation member 225 can block the circuit between the first anode 222 and the first cathode 223 before the battery pack 2 is installed into the battery compartment 121.

[0082] When the battery pack 2 is installed into the battery compartment 121, the protruding member 1211 drives the insulation member 225 to separate from the discharge anode 224, and also separate from the first anode 222 and the first cathode 223; or, the protruding member 1211 drives the insulation member 225 to separate from the discharge anode 224, and also separate from one of the first anode 222 and the first cathode 223. Thus, the first anode 222 can be electrically connected to the first cathode 223 through the discharge anode 224.

[0083] Through the above arrangement, the protruding member 1211 drives the insulation member 225 to move, so that the first anode 222 is electrically connected to the first cathode 223 through the discharge anode 224. In turn, the battery pack 22 can be discharged through the discharge anode 224, avoiding environmental pollution caused by the battery pack 2 after being discarded, and reducing the safety hazard.

[0084] It can be understood that, in the utility model, before the battery pack 2 is installed into the battery compartment 121, the discharge anode 224 ingeniously utilizes the insulation member 225 as a medium, achieving safety isolation when the battery pack 2 is not installed into the battery compartment 121.

[0085] Specifically, the discharge anode 224 can be precisely abutted against the insulation member 225 to achieve close abutment with the first cathode 223 and the first anode 222. That is, when the insulation member 225 is abutted between the discharge anode 224 and the first cathode 223, the insulation member 225 is also abutted between the discharge anode 224 and the first anode 222.

[0086] In this way, it can be ensured that the circuit between the battery pack 22 and the discharge anode 224 is in an open state without external force, effectively preventing the risk of electric shock and the phenomenon of self-discharge of the battery.

[0087] In some other embodiments, the discharge anode 224 can be selectively abutted against only the first cathode 223 or the first anode 222 through the insulation member 225, and the discharge anode 224 is connected to the electrode not abutted through direct electrical connection. This design also ensures the safety and stability of the battery pack 2 in the unused state.

[0088] Through the above structure, not only the safety performance of the battery pack 2 is enhanced, but also subsequent disassembly and environmental protection treatment are facilitated, embodying the practicality and environmental protection concept of the design.

[0089] Further, the insulation piece 225 is a key isolation component inside the battery pack 22, and its structural design is particularly critical.

[0090] Specifically, the insulation piece 225 comprises an isolation portion 2251 configured to abut between the first cathode 223 and the discharge drain 224, or abut between the first anode 222 and the discharge drain 224, or abut between both the first anode 222 and the discharge drain 224 and the first cathode 223 and the discharge drain 224.

[0091] In this way, the circuit between the battery pack 22 and the discharge drain 224 can be kept in an open state when the battery pack 2 is not assembled to the battery compartment 121. In addition, the insulation piece 225 further comprises an abutment portion 2252 connected to the isolation portion 2251, which is located on the movement track of the protruding member 1211 during installation of the battery pack 2 to the battery compartment 121. By abutting against the protruding member 1211, the displacement of the insulation piece 225 can be achieved, and the isolation of the electrode and the discharge drain by the isolation portion 2251 is removed, so that the first anode 222 and the first cathode 223 are electrically connected through the discharge drain 224. This design not only ensures the safe use of the battery pack 2, but also facilitates subsequent environmental protection treatment.

[0092] In the utility model, the electric surgical instrument has one end close to the operator and one end away from the operator, in the utility model, the one end close to the operator of electric surgical instrument is defined as the proximal end, and the one end away from the operator is defined as the distal end.

[0093] Further, the battery compartment 121 is designed to have an opening towards the proximal end of the instrument, facilitating the insertion and removal of the battery pack 2. When the battery pack 2 is installed inside the battery compartment 121, the battery base 21 will tightly fit and seal the opening, ensuring the sealing of the internal environment of the battery compartment, preventing external dust, moisture and other impurities from entering, and ensuring the safe operation of the battery pack 22 and the overall performance of the instrument.

[0094] Further, the battery compartment 121 further comprises a bottom wall structure opposite to the opening, and the protruding member 1211 is specially designed on the bottom wall and protrudes from the bottom wall to the opening in the form of a mounting column. During installation of the battery pack 2, the battery pack 22 will be accurately fitted on the mounting column, and such design not only ensures the stable installation of the battery pack 2 in the battery compartment 121, but also facilitates the accurate alignment and electrical connection between the battery pack and the battery compartment 121.

[0095] Preferably, the protruding member 1211 can be connected to the bottom wall structure in a detachable manner.

[0096] Further, the battery pack 22 comprises at least one group of batteries, each group of batteries being electrically connected with the first anode and the first cathode to form a closed circuit; or, each group of batteries is first connected in series and / or in parallel, and then electrically connected with the first anode 222 and the first cathode 223 to form a closed circuit.

[0097] In this way, each group of batteries in the battery pack 22 can be connected with the first anode 222 and the first cathode 223 to the discharge drain 224, so that effective discharge can be performed through the discharge drain 224.

[0098] Further, the housing 221 comprises two parts, a side wall 2212 and a cover plate 2211. One end of the side wall 2212 is firmly connected with the battery base 21, and the other end is tightly connected with the cover plate 2211. The battery base 21, the side wall 2212 and the cover plate 2211 jointly form a closed and safe mounting space for accommodating the batteries. A special accommodation space is also reserved inside the carefully designed mounting space, which can accommodate the mounting column from the battery compartment 121, so as to ensure that the battery pack 22 can be accurately positioned during installation. The battery pack is cleverly arranged inside the mounting space and located at the side of the accommodation space, thereby fully utilizing the space inside the housing 221. At the same time, the abutting portion 2252 of the insulating member 225 is also located in this accommodation space, which prepares for the interaction between the battery pack 2 and the protruding member 1211 after installation.

[0099] Further, the discharge drain 224 comprises two key parts, a first contact 2241 and a second contact 2242. In order to ensure the stability and safety of the discharge process, at least one resistance element 226 is carefully electrically connected between the first contact 2241 and the second contact 2242. When the battery pack 2 is correctly installed in the battery compartment 121, this resistance element 226 plays a crucial role in safely electrically connecting the first anode 222 and the first cathode 223 through the discharge drain 224. Such a design not only effectively controls the current size during the discharge process, but also prevents short circuit and other safety hazards to a certain extent, thereby ensuring the reliable operation of the battery pack 2 and the entire electric surgical instrument.

[0100] Further, in the resistance group 22 provided with a plurality of battery groups, a second anode and a second cathode are additionally provided inside the battery group 22 in addition to the first anode 222 and the first cathode 223, and are also accurately positioned inside the housing 221. When the battery pack 2 is installed into the battery compartment 121, the discharge drain 224 is responsible for connecting the first anode 222 and the first cathode 223, and at the same time ensures that the second anode and the second cathode form an effective electrical connection. Thus, further ensuring that the discharge drain 224 is electrically connected to the first anode 222 and the first cathode 223, and the discharge drain 224 is electrically connected to the second anode and the second cathode, so that the battery group 22 can be discharged by the discharge drain 224.

[0101] It should be noted that the cooperation mode of the second anode and the second cathode with the discharge drain 224 can refer to the cooperation mode of the first anode 222 and the first cathode 223 with the discharge drain 224, which will not be repeated here.

[0102] In the utility model, the instrument body 1 of the electric surgical instrument mainly consists of two parts of an end effector 11 and a handle 12, wherein the handle 12 is operatively coupled to the end effector 11 through a precise mechanical structure, realizing flexible control of the effector.

[0103] The handle 12 is additionally provided with a trigger 122 for actuating the end effector 11 to complete various surgical operations. The battery compartment 121 is ingeniously arranged on the handle 12, which not only facilitates the installation and replacement of the battery pack 2, but also maintains the overall appearance and balance of the instrument. When the battery pack 2 is installed into the battery compartment 121, the battery group 22 will form a stable electrical connection with at least one of the handle 12 or the end effector 11 through the carefully designed electrical contact structure, providing continuous power support for the normal operation of the instrument. Embodiment 2

[0104] Figure 9a 、 Figure 9b 、 Figure 9c A battery group 23 and a portion of an electric surgical instrument are schematically shown in an embodiment. The battery group 23 can include a discharge drain 231 that automatically forms a complete electrical circuit within the battery group 23 when a battery pack 2 is installed into the battery compartment 121. The discharge drain 231 is used to slowly reduce the charge of the battery group 23 over time. Once the battery group 23 has been sufficiently discharged, it can be disposed of as, for example, non-hazardous waste.

[0105] The battery group 23 can include a battery 233. The battery 233 can be provided as a lithium battery, a lead-acid battery, etc., a lithium iron phosphate battery, etc. The utility model does not make a limitation on this, and it should be understood that any suitable battery can be used.

[0106] The battery pack 23 also includes a switch 232 that, when closed 232 (i.e., the insulator 225 is separated from the discharge drain 231 and the first cathode 223 and / or the first anode 222, thereby electrically coupling the first cathode 223 and the first anode 222 through the discharge drain 231), the positive and negative terminals of the battery 233 are electrically connected to the discharge drain 231, and the battery 233 and the powered surgical instrument each include a contact that is configured to contact when the battery pack 23 is attached to the powered surgical instrument, the contact of the battery pack being the battery contact 2331, and the contact of the powered surgical instrument being 1212.

[0107] Figure 9a The battery is shown when the battery pack 2 is not installed into the battery compartment 121. The switch 232 is in the open position and the battery 233 can be in a full charge state.

[0108] Figure 9b The battery is shown when the battery pack 2 is fully installed into the battery compartment 121. The battery contact 2331 of the battery pack 23 is in electrical communication with the contact 1212 of the powered surgical instrument, thereby allowing the battery pack 23 to provide power to the powered surgical instrument. The contact 1212 of the powered surgical instrument is typically disposed on an interior wall of the battery compartment 121.

[0109] During installation of the battery pack 2 into the battery compartment 121, the switch 232 is transitioned to the closed position to electrically connect the battery 233 to the discharge drain 231. During operation of the powered surgical instrument, power will flow from the battery 233 through the discharge drain 231. In other words, the discharge drain 231 will simultaneously deplete charge from the battery 233 when the battery pack 23 is providing operational power to the powered surgical instrument. As described in greater detail below, during installation of the battery pack 2 into the battery compartment 121, a portion of the powered surgical instrument can physically interact with the discharge drain 231 to transition the switch 232 from the open state to the closed state.

[0110] Figure 9c The battery pack 2 is shown being removed from the position installed in the battery compartment 121 to a position removed from the battery compartment 121. In one embodiment, even after the battery pack 23 has been separated from the powered surgical instrument, the switch 232 remains in the closed position to continue to deplete the power of the battery 233.

[0111] The utility model will be further described below in connection with a plurality of embodiments in which the battery pack is configured differently. Embodiment 3

[0112] In one embodiment, a resistive element is used to reduce the energy level of the battery. Figure 10aFIG2 is a simplified circuit diagram of a battery pack 24 including a discharge drain 241. The battery pack 24 can be attached to an electric surgical instrument, for example, via its contacts. In this embodiment, the battery pack 24 includes a first group of batteries 242 and a second group of batteries 243. In this embodiment, the first group of batteries 242 and the second group of batteries 243 can be any type of battery, such as lithium batteries or alkaline batteries. The first group of batteries 242 and the second group of batteries 243 can each include a plurality of individual cells 2421, 2422, 2431, 2432 arranged in parallel. For example, the first group of batteries 242 and the second group of batteries 243 can each be 6 VDC and arranged in a series configuration to generate 12 VDC at the battery contacts 246 of the battery pack 24 when fully charged. However, the individual cells 2421, 2422, 2431, 2432 can be electrically connected to each other in series, in parallel, or in any other combination thereof.

[0113] In the above embodiment, the battery pack 24 includes a discharge drain 241 . Specifically, the discharge drain 241 includes a first resistance element 2412 and a second resistance element 2414 .

[0114] It should be understood that in some embodiments, the battery pack 24 may include, for example, a plurality of discharge drains 241, each of which has more or less than two resistive elements or other circuits.

[0115] In the illustrated embodiment, a first resistor 2412 is connected to the positive and negative terminals of the first battery pack 242 via a first switch 2411. A second resistor 2414 is connected to the positive and negative terminals of the second battery pack 243 via a second switch 2413. When the battery pack 24 is installed in the battery compartment 121, the first and second switches 2411, 2413 are closed to initiate discharge of the first and second batteries 242, 243. Simultaneously, the battery contacts 246 of the battery pack 24 are electrically connected to the contacts 1212 of the electric surgical instrument, thereby providing an electric power source for the electric surgical instrument. The contacts 1212 of the surgical instrument are typically located on the inner wall of the battery compartment 121. Example 4

[0116] Figure 10b A simplified circuit diagram of another embodiment of a battery pack is shown. Figure 10b In the embodiment of the present invention, the battery pack 25 can be mounted on an electric surgical instrument having multiple sets of contacts. As shown, the surgical instrument has a first set of contacts 12131, 12132 and a second set of contacts 12141, 12142, both of which can be disposed on the wall of the battery compartment 121. The battery pack 25 has a first set of battery contacts 2571, 2572 and a second set of battery contacts 2573, 2574 configured to engage contacts of the electric surgical instrument.

[0117] In the illustrated embodiment, the battery pack 25 includes a first set of batteries 253, a second set of batteries 254, a third set of batteries 255, and a fourth set of batteries 256.

[0118] The first set of batteries 253 and the second set of batteries 254 are connected in parallel to provide energy to the surgical instrument through first set of battery contacts 2571, 2572.

[0119] Further, the third set of batteries 255 and the fourth set of batteries 256 are connected in parallel to provide energy to the surgical instrument through second set of battery contacts 2573, 2574. The first set of batteries 253, the second set of batteries 254, the third set of batteries 255, and the fourth set of batteries 256 can each provide any suitable voltage level when fully charged, such as 3 VDC or 6 VDC. In certain embodiments, when the battery pack is fully charged, the battery pack 25 will deliver a total of about 12 VDC to the surgical instrument (e.g., with about 6 VDC via the first set of battery contacts 2571, 2572 and about 6 VDC via the second set of battery contacts 2573, 2574).

[0120] Further, the battery pack 25 can include a first discharge sink 251 and a second discharge sink 252. Although the first discharge sink 251 and the second discharge sink 252 are schematically shown as being independently located Figure 10b on separate circuit boards, it should be understood that the sinks 251 and 252 can be implemented on a single circuit board or by any other suitable implementation.

[0121] Further, the first discharge sink 251 includes a first resistive element 2512 connected in series with the first set of batteries 253 and the second set of batteries 254 and a first switch 2511. The second discharge sink 252 includes a second resistive element 2522 connected in series with the third set of batteries 255 and the fourth set of batteries 256 and a second switch 2521. The first switch 2511 and the second switch 2521 are shown in an open position. When the first switch 2511 is closed (e.g., when the battery pack 25 is installed into the battery compartment 121), current flows from the first set of batteries 253 and the second set of batteries 254 through the first resistive element 2512 to discharge these battery sets. Similarly, when the second switch 2521 is closed (e.g., when the battery pack 25 is installed into the battery compartment 121), current flows from the third set of batteries 255 and the fourth set of batteries 256 through the second resistive element 2522 to discharge these battery sets. Embodiment 5

[0122] Figure 11The following is a simplified circuit diagram of another embodiment of a battery pack, including a first discharge drain 261 and a second discharge drain 262. The battery pack 26 can be electrically connected to the contacts 1212 of the electric surgical instrument, for example, via its battery contacts 263. In this embodiment, the battery pack 26 includes a first group of batteries 264, a second group of batteries 265, and a third group of batteries 266. The first discharge drain 261 includes a first resistive element 2613 and a second resistive element 2614. The second discharge drain 262 includes a third resistive element 2622. The resistive elements 2613, 2614, and 2622 are connected to the corresponding batteries via switches 2611, 2612, and 2621. When the battery pack 26 is installed in the battery compartment 121, the switches 2611, 2612, and 2621 can be closed to initiate discharge of the first group of batteries 264, the second group of batteries 265, and the third group of batteries 266. The impedance of third resistive element 2622 can be similar to or different from the impedances of first resistive element 2613 and second resistive element 2614. The impedance of third resistive element 2614 can depend at least in part on the voltage of third group of batteries 266 and the desired characteristics of the discharge curve.

[0123] In summary, the embodiments of the present invention achieve the following technical effects:

[0124] The protruding member 1211 drives the insulating member 225 to move, thereby electrically connecting the first anode 222 to the first cathode 223 through the discharge drain 224. The battery pack 22 can then be discharged through the discharge drain 224, thereby preventing environmental pollution caused by the discarded battery pack 2 and reducing safety hazards.

[0125] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0126] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0127] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0128] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An electric surgical instrument with a detachable battery pack, comprising an instrument body and a battery pack, wherein the instrument body has a battery compartment for accommodating the battery pack and a protruding member disposed in the battery compartment, characterized in that: The battery pack includes a battery base and a battery pack attachable to the battery base, the battery pack includes a shell, a first anode and a first cathode positioned in the shell, a discharge drain and an insulating member, the discharge drain interacts with the first cathode and the first anode respectively through the insulating member, or interacts with one of them through the insulating member while being electrically connected to the other. When the battery pack is installed in the battery compartment, the protruding member drives the insulating member to separate from the first cathode and / or the first anode and the discharge drain, so as to electrically connect the first anode to the first cathode through the discharge drain.

2. The electric surgical instrument according to claim 1, wherein: Before the battery pack is installed in the battery compartment, the discharge drain is respectively in contact with the first cathode and the first anode through the insulating member, or is in contact with one of them and electrically connected to the other at the same time through the insulating member.

3. The electric surgical instrument according to claim 2, wherein: The insulating part has an isolation portion that abuts between the first cathode and the discharge drain and / or the first anode and the discharge drain, and an abutting portion connected to the isolation portion. When the battery pack is installed in the battery compartment, the abutting portion is located on the movement trajectory of the protruding member and is used to abut against the protruding member.

4. The electric surgical instrument according to claim 3, wherein: The battery compartment has an opening toward the proximal end, and when the battery pack is installed in the battery compartment, the battery base seals the opening.

5. The electric surgical instrument according to claim 4, characterized in that The battery compartment has a bottom wall opposite to the opening, and the protruding member is configured as a mounting post protruding from the bottom wall toward the opening. When the battery pack is installed in the battery compartment, the battery pack is sleeved on the mounting post.

6. The electric surgical instrument according to claim 5, characterized in that The battery pack includes at least one group of batteries, and each group of batteries in the at least one group of batteries can be electrically connected to the first anode and the first cathode to form a closed circuit, or each group of batteries in the at least one group of batteries can be connected in series and / or in parallel and electrically connected to the first anode and the first cathode to form a closed circuit.

7. The electric surgical instrument according to claim 6, wherein: The shell has an accommodating space for accommodating the mounting column. The at least one battery group is arranged in the shell and located on the side of the accommodating space. The abutting portion is located in the accommodating space.

8. The electric surgical instrument according to claim 6, wherein: The discharge drain includes a first contact and a second contact, and at least one resistive element is electrically connected to the first contact and the second contact, wherein when the battery pack is installed in the battery compartment, the discharge drain electrically connects the first anode to the first cathode through the at least one resistive element.

9. The electric surgical instrument according to claim 1, wherein: The battery pack includes a second anode and a second cathode positioned within the housing, and the discharge drain electrically connects the second anode to the second cathode when the battery pack is installed in the battery compartment.

10. The electric surgical instrument according to claim 1, wherein The instrument body includes an end actuator and a handle, wherein the handle is operably connected to the end actuator, the handle includes a trigger for actuating the end actuator, and the battery compartment is arranged on the handle. When the battery pack is installed in the battery compartment, the battery pack is electrically contacted with at least one of the handle and the end actuator.

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