Electric laparoscopic stapler with automatic identification of staple cartridge

Abstract

The utility model relates to the technical field of medical instruments, and in particular to an electric laparoscopic stapler capable of automatically identifying a staple cartridge, comprising: a staple cartridge assembly; a handle assembly connected to the staple cartridge assembly through a gun rod; a movable assembly comprising a transition piece penetrating the gun rod and suitable for abutting against an end of the staple cartridge assembly plugged into the gun rod, and a sliding block connected to the transition piece and suitable for synchronous movement with the transition piece in the handle assembly; a trigger piece arranged on the sliding block and suitable for synchronous movement with the sliding block; a signal sensing processing module comprising a circuit board arranged in the handle assembly, a sensing part arranged on the circuit board for sensing the trigger piece, a processing part connected to the sensing part for processing a signal emitted by the sensing part, and a display screen connected to the processing part for outputting staple cartridge information.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an electric laparoscope stapler capable of automatically identifying a staple cartridge. Background Art

[0002] Staplers are used in cardiothoracic surgery, gastrointestinal surgery, hepatobiliary spleen and pancreas surgery, general surgery, urology surgery, etc., which can help patients relieve pain and accelerate wound healing. Staplers have the advantages of easy use, fast suturing, simple operation, reduced side effects and surgical complications. Staplers include manual staplers and electric staplers. Staplers can be divided into: linear staplers, circular staplers, laparoscopic staplers, skin staplers, etc. according to their uses. The structure of the stapler usually includes two parts: an actuator, which is used to perform surgical operations such as cutting and suturing; and a stapler body, whose distal end is engaged with the actuator and the proximal end has a handle or grip. The actuator can have multiple types according to different surgical requirements (for example, a laparoscopic stapler includes an actuator that meets different suturing lengths), and the stapler body can be engaged with multiple types of actuators. In an operation, the stapler body can be used multiple times, and the actuator is replaced according to different situations, thereby reducing the cost of using the stapler.

[0003] The closing and firing operations of different types of actuators are different. If the wrong actuator is docked with the stapler body during surgery, and the wrong closing and firing operations are performed, it will cause unpredictable medical accidents and / or damage to the instrument. Therefore, it is necessary to correctly identify the type of actuator to prevent the wrong actuator from docking with the stapler body. And in the case of an electric stapler, it is also necessary to transmit the relevant information of the actuator (such as the type of actuator) to the control unit in the stapler body, and then select the corresponding drive mode according to the type of actuator to perform the correct closing and firing operations on the actuator to avoid medical accidents.

[0004] In order to facilitate doctors to use appropriate stapler components according to actual needs, the prior art, such as publication number CN113729823A, discloses an electric stapler with a stapler identification system and a stapler identification method, which is installed with a magnet on the stapler and an identification module in the gun barrel. At this time, multiple identification modules need to be installed to one-to-one adapt the magnets of stapler components of different length specifications, and finally display it through the display of the main control board of the signal processing module, such as an indicator light. In this case, the electric laparoscopic stapler has the following problems after actual research and use:

[0005] Firstly, it is necessary to have multiple identification modules. In this case, multiple identification modules need to be arranged inside the laparoscopic stapler which has limited size, which increases the difficulty of design and assembly.

[0006] Secondly, when the indicator light is used, doctors may make misjudgments when they are in a highly tense and busy state. They may use an inappropriate nail magazine because they confuse the nail magazine length corresponding to the indicator light, which causes inconvenience in surgical operations.

[0007] Therefore, in view of the shortcomings of the current electric laparoscopic stapler in actual production and use, its overall structure needs to be further optimized. Utility Model Content

[0008] The utility model aims to provide an electric laparoscopic stapler capable of automatically identifying a staple cartridge, so as to solve the technical problem of optimizing the overall performance of the stapler.

[0009] The electric laparoscopic stapler with automatic identification of staple cartridges of the utility model is realized as follows:

[0010] An electric laparoscopic stapler capable of automatically identifying a staple cartridge, comprising:

[0011] Nail cartridge assembly;

[0012] A handle assembly connected to the nail magazine assembly through a gun rod;

[0013] The movable assembly includes a transition piece which is arranged in the gun rod and is suitable for abutting against the end of the gun rod where the nail magazine assembly is inserted, and a sliding block which is arranged in the handle assembly and connected to the transition piece and is suitable for synchronous movement with the transition piece;

[0014] A triggering member, which is disposed on the sliding block and is adapted to move synchronously with the sliding block;

[0015] A signal sensing processing module, comprising a circuit board disposed in the handle assembly, a sensing portion disposed on the circuit board for sensing the triggering member, a processing portion connected to the sensing portion for processing a signal sent by the sensing portion, and a display screen connected to the processing portion for outputting information of the nail magazine;

[0016] When the nail magazine assembly is engaged with the gun rod, the transition piece is suitable for driving the sliding block and the trigger piece to move synchronously under the push of the nail magazine assembly, and the sensing part is suitable for sensing the trigger piece and outputting a corresponding electrical signal to transmit to the processing part.

[0017] In an optional implementation of the present utility model, the triggering member is a magnet; and the sensing part is a Hall sensor;

[0018] When the nail magazine assembly is engaged with the gun rod, the transition piece is suitable for driving the sliding block and the trigger piece to move synchronously under the push of the nail magazine assembly so that the trigger piece gradually approaches the Hall sensor, and the Hall sensor is suitable for detecting the magnetic flux size of the magnet and outputting a corresponding electrical signal to the processing unit.

[0019] In an optional implementation of the present invention, nail cartridge assemblies of different specifications and sizes are suitable for being inserted into the gun barrel to different depths; and

[0020] When the gun rod is engaged with handle assemblies of different specifications and sizes, the movable distances of the transition piece, the sliding block and the trigger piece are different, so that the relative distances between the sensing part and the trigger piece are different and different electrical signals are output.

[0021] In an optional implementation of the present invention, the nail magazine assembly includes a nail magazine and a sleeve connected to the nail magazine; wherein

[0022] The end of the sleeve facing away from the nail magazine is formed with a plug connector suitable for being inserted into the gun rod;

[0023] The lengths of the plug connectors of nail cartridge assemblies of different specifications and sizes are different so that the nail cartridge assemblies of different specifications and sizes are suitable for being inserted into the gun barrel to different depths.

[0024] In an optional implementation of the present invention, the handle assembly includes a fixed handle and a universal handle connected to the fixed handle; wherein

[0025] The fixed handle comprises a handle shell and a receiving cavity provided in the handle shell for accommodating the signal sensing processing module;

[0026] The handle shell is provided with a transparent window corresponding to the display screen.

[0027] In an optional implementation of the utility model, a knife-pushing rod is provided in the gun rod, and the transition piece is a knife-pushing rod sleeve sleeved on the outer layer of the knife-pushing rod.

[0028] In an optional implementation of the utility model, the tool rod sleeve is connected to the sliding block through a universal handle inner sleeve provided in the universal handle;

[0029] The sliding block is provided with a joint portion for abutting and matching with the inner sleeve of the universal handle.

[0030] In an optional implementation of the utility model, the universal handle is provided with a circular ring-shaped connecting portion that abuts against the engaging portion; and

[0031] A through hole suitable for the knife push rod to pass through is formed in the inner sleeve of the universal handle, and the knife rod sleeve is detachably connected to the inner sleeve of the universal handle.

[0032] In an optional implementation of the utility model, an elastic member connected to the sliding block is further provided in the receiving cavity;

[0033] When the nail magazine assembly is engaged with the gun rod, and the transition piece is adapted to drive the sliding block and the trigger piece to move synchronously under the push of the nail magazine assembly, the elastic piece is compressed and deformed.

[0034] In an optional implementation of the present invention, the circuit board is further provided with an indicator light adapted to a plurality of nail magazine assemblies of different specifications and sizes; and

[0035] The handle shell is provided with a light-transmitting window corresponding to the indicator light.

[0036] By adopting the above technical scheme, the utility model has the following beneficial effects: the electric laparoscopic stapler with automatic identification of the staple magazine of the utility model realizes the linkage between the staple magazine assembly and the trigger member in the handle assembly through the movable assembly, so that the relative distance between the sensing part of the signal sensing processing module and the trigger member is different and different electrical signals are output, and the information corresponding to the staple magazine assembly can be intuitively displayed through the display screen arranged on the circuit board, such as directly displaying the length specification of the staple magazine in digital form, so as to avoid the problem that the doctor makes a mistake in the specification of the staple magazine assembly and causes poor progress of the operation.

[0037] Furthermore, the activity trajectory of the movable component is adjusted by designing different depths of insertion of different staple magazine assemblies into the gun barrel. Under this structure, different staple magazine assemblies can be identified through the use of a trigger member and a sensor, thereby simplifying the overall structure of the electric laparoscopic stapler and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The figure shows the overall structure of the electric laparoscopic stapler capable of automatically identifying the staple cartridge of the utility model;

[0039] Figure 2 The figure shows a partial structural schematic diagram of the electric laparoscopic stapler capable of automatically identifying staple cartridges according to the utility model;

[0040] Figure 3 It is a schematic diagram showing the length dimensions of the plug connectors of the electric laparoscopic stapler with automatic staple cartridge identification according to the utility model corresponding to different staple cartridge assemblies;

[0041] Figure 4 It is a schematic diagram showing the cooperation between the triggering member and the sensing part corresponding to different staple cartridge assemblies of the electric laparoscopic stapler capable of automatically identifying staple cartridges of the present invention;

[0042] Figure 5 It is a schematic diagram of a signal sensing processing module of the electric laparoscopic stapler capable of automatically identifying staple cartridges according to the present invention from a first viewing angle;

[0043] Figure 6 It is a schematic diagram of a second viewing angle of a signal sensing processing module of the electric laparoscopic stapler capable of automatically identifying a staple cartridge according to the present invention;

[0044] Figure 7The figure shows the principle schematic diagram of the induction recognition of the staple cartridge assembly by the electric laparoscopic stapler capable of automatically recognizing the staple cartridge of the utility model;

[0045] Figure 8 The figure shows the internal structure of the electric laparoscopic stapler capable of automatically identifying the staple cartridge of the utility model;

[0046] Fig. 9 for Figure 8 A magnified view of part A;

[0047] Fig.10 The figure shows a schematic diagram of a signal sensing processing module of an electric laparoscopic stapler capable of automatically identifying a staple cartridge according to the present invention;

[0048] Fig.11 The figure shows a circuit schematic diagram of the MCU module of the electric laparoscopic stapler capable of automatically identifying the staple cartridge of the utility model;

[0049] Fig.12 The figure shows a circuit schematic diagram of an adaptive acquisition module of an electric laparoscopic stapler capable of automatically identifying staple cartridges according to the present invention;

[0050] Fig.13 Shown is a circuit schematic diagram of a display screen of an electric laparoscopic stapler capable of automatically identifying a staple cartridge according to the utility model;

[0051] Fig.14 Shown is a circuit schematic diagram of an LED module of the electric laparoscopic stapler for automatically identifying staple cartridges of the present invention.

[0052] In the figure: nail magazine 11, sleeve 12, plug connector 13, connecting piece 21, knife rod sleeve 22, universal handle inner sleeve 23, sliding block 24, elastic member 25, universal handle 31, handle shell 32, transparent window 33, trigger member 4, circuit board 5, sensor part 51, indicator light 52, display screen 55, knife push rod 61, motor 62, battery pack 63, output gear 64, transmission rack 65, pressing part 7, gun rod 8. DETAILED DESCRIPTION

[0053] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0054] Embodiment 1:

[0055] See also Figures 1 to 14As shown, this embodiment provides an electric laparoscopic stapler with automatic identification of staple cartridges, comprising: a staple cartridge assembly, and a handle assembly connected to the staple cartridge assembly through a gun rod 8. The gun head assembly comprises a staple cartridge 11 and a sleeve 12 connected to each other; a plug connector 13 suitable for being inserted into the gun rod 8 is formed at one end of the sleeve 12 facing away from the staple cartridge 11; and the handle assembly comprises a fixed handle and a universal handle 31 connected to the fixed handle.

[0056] On the basis of the above structure, the electric laparoscopic stapler with automatic staple cartridge identification adopted in this embodiment further includes a movable component, a trigger member 4 and a signal sensing processing module.

[0057] Specifically, first, the movable assembly includes a transition piece that runs through the gun barrel 8 and is suitable for abutting against the plug connector 13 of the nail magazine assembly, and a sliding block 24 that is provided in the handle assembly and connected to the transition piece and is suitable for synchronous movement with the transition piece. In an optional implementation, the transition piece can abut against the plug connector 13 of the nail magazine assembly, or can be matched through the connector 21, and this embodiment does not make an absolute limitation on this.

[0058] Furthermore, a knife push rod 61 is provided in the gun barrel 8, and the transition piece is a knife rod sleeve 22 sleeved on the outer layer of the knife push rod 61; it should be noted that although the knife rod sleeve 22 is sleeved on the outer layer of the knife push rod 61, the two are not fixed together, but the knife rod sleeve 22 can move along the axial direction of the knife push rod 61, and the knife push rod 61 can also move relative to the knife rod sleeve 22 during the firing process of the electric laparoscopic stapler. In addition, the knife rod sleeve 22 is connected to the sliding block 24 through the universal handle inner sleeve 23 provided in the universal handle 31; the sliding block 24 is provided with a joint portion for abutting and matching with the universal handle inner sleeve 23.

[0059] Furthermore, in conjunction with the accompanying drawings, an optional implementation is given as an example, the universal handle 31 is provided with a circular connecting portion that abuts against the joint portion; and the universal handle inner sleeve 23 is formed with a through hole suitable for the pusher rod 61 to pass through, and the rod sleeve 22 is detachably connected to the universal handle inner sleeve 23. Under this structure, the universal handle inner sleeve 23 can not only meet the cooperation with the rod sleeve 22, but also will not affect the normal use of the rod.

[0060] Regarding the sliding block 24 used in this embodiment, it can be partially arranged in the fixed handle and the other part can be arranged in the universal handle 31; the sliding block 24 can also be arranged in the fixed handle as a whole, and this embodiment does not make an absolute limitation to this.

[0061] Based on the above structure, it is explained that a trigger member 4 is provided on the sliding block 24 and can move synchronously with the sliding block 24; and a signal sensing processing module is provided in the fixed handle. Here, the fixed handle includes a handle shell 32 and a receiving cavity provided in the handle shell 32 for accommodating the signal sensing processing module.

[0062] Specifically, the signal sensing processing module includes a circuit board 5 disposed in the handle assembly, a sensing portion 51 disposed on the circuit board 5 for sensing the trigger member 4, a processing portion connected to the sensing portion 51 for processing the signal sent by the sensing portion 51, and a display screen 55 connected to the processing portion for outputting information of the nail magazine 11. In this regard, further, a transparent window 33 corresponding to the display screen 55 is provided on the handle shell 32.

[0063] Based on the above structure, when the sleeve 12 of the nail magazine assembly is engaged with the gun rod 8, the transition piece is suitable for driving the sliding block 24 and the trigger member 4 to move synchronously under the push of the sleeve 12, and the sensing part 51 is suitable for sensing the trigger member 4 and outputting a corresponding electrical signal to transmit to the processing part.

[0064] In addition, it is necessary to explain that an elastic member 25 connected to the sliding block 24 is also provided in the receiving chamber; when the nail magazine assembly is engaged with the gun rod 8, and the transition member is suitable for driving the sliding block 24 and the trigger member 4 to move synchronously under the push of the nail magazine assembly, the elastic member 25 is compressed and deformed. Through the design of the elastic member 25, when the nail magazine assembly is replaced, after the nail magazine assembly is separated from the gun rod 8, the push force applied by the sleeve 12 of the nail magazine assembly to the transition member is released, and the sliding block 24 and the transition member can be reset under the elastic force of the elastic member 25, so that when a new nail magazine assembly is loaded, a corresponding motion trajectory is generated under the action of the new nail magazine assembly.

[0065] For the trigger member 4 and the sensing part 51:

[0066] In the first optional embodiment, the trigger member 4 is a magnet; and the induction part 51 is a Hall sensor; in this structure, when the nail magazine assembly is engaged with the gun rod 8, the transition member is suitable for driving the sliding block 24 and the trigger member 4 to move synchronously under the push of the nail magazine assembly so that the trigger member 4 gradually approaches the Hall sensor, and the Hall sensor is suitable for detecting the magnetic flux of the magnet and outputting a corresponding electrical signal to the processing unit. Specifically, when the nail magazine assembly is inserted into the gun rod 8 to the minimum depth, the transition member and the sliding block 24 have the shortest moving distance at this time, and for the magnet on the sliding block 24 that is in place, the distance between it and the Hall sensor is the largest, and in this case, the magnetic flux detected by the Hall sensor is the smallest; when the nail magazine assembly is inserted into the gun rod 8 to the maximum depth, the transition member and the sliding block 24 have the longest moving distance at this time, and for the magnet on the sliding block 24 that is in place, the distance between it and the Hall sensor is the smallest, and in this case, the magnetic flux detected by the Hall sensor is the largest. Therefore, under this structure, only one Hall sensor and one magnet are needed to meet the automatic identification effect for nail magazine assemblies of different specifications and sizes, which not only simplifies the structure and reduces the production cost, but also reduces the failure rate during use.

[0067] In a second optional embodiment, the sensing portion 51 adopts a displacement sensor; in this structure, when the nail magazine assembly is engaged with the gun barrel 8, the transition piece is suitable for driving the sliding block 24 and the trigger member 4 to move synchronously under the push of the nail magazine assembly, and the displacement sensor is suitable for detecting the distance between the trigger member 4 and the displacement sensor and outputting a corresponding electrical signal to be transmitted to the processing unit.

[0068] In order to meet the use requirements of the trigger member 4 and the sensing part 51, it should be noted that:

[0069] The nail cartridge assemblies of different sizes are suitable for being inserted into the gun barrel 8 at different depths. In more detail, the lengths of the plug connectors 13 of the nail cartridge assemblies of different sizes (such as Figure 4 The structures A, B, and C shown are different so that the nail cartridge assemblies of different specifications and sizes are suitable for being inserted into the gun rod 8 at different depths. Under this structure, when the gun rod 8 is engaged with the handle assemblies of different specifications and sizes, the movable distances of the transition piece, the sliding block 24, and the trigger piece 4 are different, so that the relative distances between the sensing part 51 and the trigger piece 4 are different and different electrical signals are output.

[0070] Next, it is explained that, in conjunction with the accompanying drawings, the triggering member 4 is a magnet, and the sensing part 51 is a Hall sensor. For example, in detail:

[0071] First, the processing unit may optionally use an MCU chip U1, model M058LBN; the display screen 55 is an LCD display screen 55, and the LCD display screen 55 is connected to pins 37 and 38 of the MCU chip U1. The MCU chip U1 is connected to an adaptive acquisition module. The adaptive acquisition module of this embodiment is used to collect the magnetic flux of the magnet at different sensing positions, and output the corresponding electrical signal generated to the MCU module. The MCU module is used to receive and process the electrical signal output by the adaptive acquisition module, and control the display screen 55 to display the specification information of the nail magazine assembly. Fig.12 As shown, the adaptive acquisition module of this embodiment includes a Hall sensor, a first operational amplifier module and a second operational amplifier module. The Hall sensor is used to collect the magnetic flux of the magnet. The output end of the Hall sensor is connected to the input end of the first operational amplifier module, the output end of the first operational amplifier module is connected to the input end of the second operational amplifier module, and the output end of the second operational amplifier module is connected to the MCU module. The signal output by the Hall sensor U9 is amplified in two stages by the first operational amplifier chip U7 and the second operational amplifier chip U8, and then output to pin 2 of the MCU chip U1.

[0072] After the plug connector 13 of the nail magazine assembly of different specifications and sizes is connected to the gun rod 8, the movement stroke of the sliding block 24 in the handle assembly is also different. Figure 4 As shown, position a in the figure is position 0, that is, the position of the sliding block 24 when the nail magazine assembly is not engaged with the gun rod 8. Position b in the figure is the final position after the sliding block 24 moves after, for example, the nail magazine assembly corresponds to a 30mm nail magazine 11. Position c in the figure is the final position after the sliding block 24 moves after, for example, the nail magazine assembly corresponds to a 45mm nail magazine 11. Position d in the figure is the final position after the sliding block 24 moves after, for example, the nail magazine assembly corresponds to a 60mm nail magazine 11.

[0073] Since the distances between the b position, c position, and d position and the Hall sensor 7 in the adaptive acquisition module are different, the magnetic flux of the magnet sensed and collected by the Hall sensor is also different. For example: at the b position, the magnetic flux of the magnet collected by the Hall sensor is 1Wb. At the c position, the magnetic flux of the magnet 6 collected by the Hall sensor 7 is 2Wb. At the d position, the magnetic flux of the magnet collected by the Hall sensor is 3Wb. The adaptive acquisition module converts the collected magnetic flux of different sizes into electrical signals and sends them to the MCU module. After processing by the MCU module, the length specification information of different nail magazine components is displayed on the display screen 55.

[0074] Of course, it should be noted that, for the electric laparoscopic stapler with automatic identification of staple cartridges of this embodiment, it also includes a battery pack 63 for power supply, and a firing mechanism provided in the handle shell 32 for firing the gun head assembly, and the firing mechanism can be selected to adopt any mature means in the prior art, such as but not limited to the motor 62, the output gear 64 connected to the motor 62, and the transmission rack 65 connected to the output gear 64. Based on this situation, the circuit board 5 can control the rotation of the motor 62, and corresponding buttons can be designed on the circuit board 5 to control the working state of the motor 62.

[0075] For the above-mentioned buttons, an optional implementation is given as an example, which can be a forward button, a backward button and a confirmation button; wherein the confirmation button can be used to confirm whether the staple cartridge assembly is in the closed position or the firing position. The forward button is used to control the motor 62 to drive the rack to move forward in the direction where the staple cartridge assembly is located, and the backward button is used to control the motor 62 to drive the rack to move backward in the direction away from the staple cartridge assembly.

[0076] In summary, the electric laparoscopic stapler with automatic identification of the staple cartridge of this embodiment can accurately identify the specification information of the staple cartridge assembly connected to the gun rod 8, so as to facilitate the doctor to select the appropriate instrument during the operation. Under this structure, the display screen 55 provided on the circuit board 5 can intuitively display the information corresponding to the staple cartridge assembly, for example, directly display the length specification of the staple cartridge 11 in digital form, so as to avoid the problem that the doctor makes a mistake in the specification of the staple cartridge assembly and causes the operation progress to be slow.

[0077] Embodiment 2:

[0078] In the electric laparoscopic stapler with automatic staple cartridge identification of Example 1, the circuit board 5 used therein is also provided with an indicator light 52 (LED module) adapted to staple cartridge assemblies of various specifications and sizes; and the handle shell 32 is provided with a light-transmitting window corresponding to the indicator light 52 .

[0079] In order to effectively utilize the space on the outer wall of the handle shell 32, a pressing portion 7 adapted to the button is provided on the outer wall of the handle shell 32, and the indicator light 52 can be distributed circumferentially around the button to improve the compactness of the structure on the overall circuit board 5. At this time, the pressing portion 7 is set as a light-transmitting body, that is, the light of the indicator light 52 can be directly transmitted through the pressing portion 7.

[0080] In this regard, the LED module of this embodiment includes a first LED light group, a second LED light group and a third LED light group, and the first LED light group LD1, the second LED light group LD2 and the third LED light group LD3 are all connected to the MCU module. Fig.14As shown, the LED light groups in this embodiment are all three-color LED lamp beads. When the nail box 11 is detected to be 30mm in length, the first LED light group LD1 lights up green; when the nail box 11 is detected to be 45mm in length, the second LED light group LD2 lights up green; when the nail box 11 is detected to be 60mm in length, the third LED light group LD3 lights up green.

[0081] Based on the above situation, that is to say, not only can the information corresponding to the nail magazine assembly be intuitively displayed through the display screen 55, but also the nail magazine assemblies of different specifications can be distinguished by lighting the indicator light 52, thereby ensuring through double insurance that the doctor can select the correct nail magazine assembly for surgery.

[0082] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0083] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as a limitation on the present invention.

[0084] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. An electric laparoscopic stapler capable of automatically identifying a staple cartridge, characterized in that: include: Nail cartridge assembly; A handle assembly connected to the nail magazine assembly through a gun rod; The movable assembly includes a transition piece which is arranged in the gun rod and is suitable for abutting against the end of the gun rod where the nail magazine assembly is inserted, and a sliding block which is arranged in the handle assembly and connected to the transition piece and is suitable for synchronous movement with the transition piece; A triggering member, which is disposed on the sliding block and is adapted to move synchronously with the sliding block; A signal sensing processing module, comprising a circuit board disposed in the handle assembly, a sensing portion disposed on the circuit board for sensing the triggering member, a processing portion connected to the sensing portion for processing a signal sent by the sensing portion, and a display screen connected to the processing portion for outputting information of the nail magazine; When the nail magazine assembly is engaged with the gun rod, the transition piece is suitable for driving the sliding block and the trigger piece to move synchronously under the push of the nail magazine assembly, and the sensing part is suitable for sensing the trigger piece and outputting a corresponding electrical signal to transmit to the processing part.

2. The electric laparoscopic stapler with automatic staple cartridge identification according to claim 1, characterized in that: The triggering element is a magnet; and the sensing part is a Hall sensor; The Hall sensor is arranged on a side of the triggering member facing away from the transition member; and When the nail magazine assembly is engaged with the gun rod, the transition piece is suitable for driving the sliding block and the trigger piece to move synchronously under the push of the nail magazine assembly so that the trigger piece gradually approaches the Hall sensor, and the Hall sensor is suitable for detecting the magnetic flux size of the magnet and outputting a corresponding electrical signal to the processing unit.

3. The electric laparoscopic stapler with automatic staple cartridge identification according to claim 1 or 2, characterized in that: Nail cartridge assemblies of different specifications and sizes are suitable for being inserted into the gun barrel to different depths; as well as When the gun rod is engaged with handle assemblies of different specifications and sizes, the movable distances of the transition piece, the sliding block and the trigger piece are different, so that the relative distances between the sensing part and the trigger piece are different and different electrical signals are output.

4. The electric laparoscopic stapler with automatic staple cartridge identification according to claim 3, characterized in that: The nail magazine assembly includes a nail magazine and a sleeve connected to the nail magazine; wherein The end of the sleeve facing away from the nail magazine is formed with a plug connector suitable for being inserted into the gun rod; The lengths of the plug connectors of nail cartridge assemblies of different specifications and sizes are different so that the nail cartridge assemblies of different specifications and sizes are suitable for being inserted into the gun rod to different depths.

5. The electric laparoscopic stapler with automatic staple cartridge identification according to claim 1, characterized in that: The handle assembly includes a fixed handle and a universal handle connected to the fixed handle; wherein The fixed handle comprises a handle shell and a receiving cavity provided in the handle shell for accommodating the signal sensing processing module; The handle shell is provided with a transparent window corresponding to the display screen.

6. The electric laparoscopic stapler with automatic staple cartridge identification according to claim 5, characterized in that: A knife-pushing rod is arranged in the gun rod, and the transition piece is a knife-pushing rod sleeve which is sleeved on the outer layer of the knife-pushing rod.

7. The electric laparoscopic stapler with automatic staple cartridge identification according to claim 6, characterized in that: The tool rod sleeve is connected to the sliding block through a universal handle inner sleeve provided in the universal handle; The sliding block is provided with a joint portion for abutting and matching with the inner sleeve of the universal handle.

8. The electric laparoscopic stapler with automatic staple cartridge identification according to claim 7, characterized in that: The inner sleeve of the universal handle is provided with an annular connecting portion that abuts against the engaging portion; and A through hole suitable for the knife push rod to pass through is formed in the inner sleeve of the universal handle, and the knife rod sleeve is detachably connected to the inner sleeve of the universal handle.

9. The electric laparoscopic stapler with automatic staple cartridge identification according to claim 7, characterized in that: The receiving cavity is also provided with an elastic member connected to the sliding block; When the nail magazine assembly is engaged with the gun rod, and the transition piece is adapted to drive the sliding block and the trigger piece to move synchronously under the push of the nail magazine assembly, the elastic piece is compressed and deformed.

10. The electric laparoscopic stapler according to any one of claims 5 to 9, characterized in that: The circuit board is also provided with indicator lights adapted to nail magazine assemblies of various specifications and sizes; and The handle shell is provided with a light-transmitting window corresponding to the indicator light.

Images