anastomat

Abstract

The application provides an anastomat, comprising: a first transmission assembly, comprising a first motor, a gear structure and a rack, the first motor driving the gear structure to drive a firing rod connected with the rack to move in a first direction; a second transmission assembly, comprising a second motor, a sliding piece and a driving link, the second motor driving the sliding piece to drive the driving link to move in the first direction through a connecting piece; a return knife assembly, comprising a first return knife part fixedly connected with the gear structure, a second return knife part connected with the connecting piece, and a third return knife part connecting the first return knife part and the second return knife part; in a first mode, the first motor drives the rack to move through the gear structure to complete a firing action, and the second motor drives the driving link to move through the connecting piece to swing a head of the anastomat; in a second mode, the first return knife part drives the gear structure to move in a second direction perpendicular to the first direction, so that the first motor and the rack are disconnected, and the second return knife part synchronously drives the connecting piece to be disconnected from the sliding piece.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a stapler. Background Technology

[0002] In modern surgical procedures, staplers are widely used. They efficiently cut and suture tissues, significantly shortening surgical time and reducing surgical risks. Most existing staplers are electrically driven. While electric operation is convenient and efficient, in certain situations, such as power failures or motor malfunctions, the electric drive may fail to function properly, posing a significant risk to the surgery. Furthermore, in complex surgical scenarios, surgeons may require more flexible and precise control of the stapler, a personalized need that electric operation cannot adequately meet.

[0003] Therefore, it is indeed necessary to improve the existing staplers. Summary of the Invention

[0004] The purpose of this invention is to provide a stapler that can switch two drive systems to manual mode simultaneously with a single action.

[0005] To achieve the above objectives, the present invention provides a stapler, comprising:

[0006] The first transmission assembly includes a first motor, a gear structure driven by the first motor, and a rack meshing with the gear structure. One end of the rack is fixedly connected to the firing rod to drive the firing rod to move along a first direction.

[0007] The second transmission assembly includes a second motor and a sliding member and a driving link driven by the second motor to move in a first direction. The sliding member and the driving link are movably connected by a connector. One end of the driving link is sleeved on the outside of the firing rod and connected to the firing rod.

[0008] The return tool assembly includes a first return tool section fixedly connected to the gear structure, a second return tool section connected to the connector, and a third return tool section connecting the first return tool section and the second return tool section;

[0009] The stapler has a first mode and a second mode. In the first mode, the first motor drives the rack to reciprocate through the gear structure to complete the firing action, and the second motor drives the drive linkage to reciprocate through the connector to swing the head of the stapler. In the second mode, the gear structure moves along a second direction perpendicular to the first direction under the drive of the first return blade, so that the first motor and the rack are disengaged from the transmission, and the connector is simultaneously disengaged from the sliding member under the action of the second return blade.

[0010] As a further improvement of the present invention, in the second mode, the anastomosis device includes a wrench, which is fixedly connected to the first return blade part through a locking part. By rotating the wrench, the firing rod can be manually controlled to reciprocate along the first direction.

[0011] As a further improvement of the present invention, the first return blade includes a rotating rod connecting the wrench and the gear structure. The rotating rod is provided with an opening and a hook portion. The engaging portion extends into the opening and connects with the hook portion, so that the engaging portion, the rotating rod and the gear structure are fixed to each other, so that the engaging portion drives the rotating rod and the gear structure to move synchronously in the second direction.

[0012] As a further improvement of the present invention, a rotating rod sleeve is provided on the outer side of the rotating rod, and the rotating rod sleeve is fixedly connected to the rotating rod and the third return cutter part respectively.

[0013] As a further improvement of the present invention, the gear structure includes a first gear connected to the output shaft of the first motor and a second gear meshing with the first gear, and the rack meshes with the second gear.

[0014] As a further improvement of the present invention, the sliding member, the second return cutter part and the driving connecting rod are arranged sequentially in a third direction that is simultaneously perpendicular to the first direction and the second direction and are mutually fitted with a gap. One end of the second return cutter part abuts against the connecting member, and the other end is engaged with the third return cutter part, and is driven by the third return cutter part to push the connecting member away from the sliding member along the second direction.

[0015] As a further improvement of the present invention, the sliding member is provided with a first slot for accommodating the first end of the connector, the driving link is provided with a second slot for accommodating the second end of the connector, and a pressure plate and a first elastic member are provided above the first end of the connector. When the connector moves in the second direction, the first end presses against the pressure plate and the first elastic member is compressed until the first end disengages from the first slot.

[0016] As a further improvement of the present invention, the second return cutter includes a horizontal bar portion arranged along a first direction and a vertical bar portion arranged along a second direction, and the second end of the connector is engaged with the horizontal bar portion and can slide along the horizontal bar portion.

[0017] As a further improvement of the present invention, it also includes a fixed clamping plate, in which the return tool assembly is housed, and at least one of the third return tool portion and the fixed clamping plate is provided with a limiting portion to limit the distance the return tool assembly moves in the second direction.

[0018] As a further improvement of the present invention, the limiting part includes a protrusion provided on the fixed clamp and a sliding groove opened in the third return cutter part, the sliding groove extending in a second direction, and the protrusion being inserted into the sliding groove and able to slide along the sliding groove.

[0019] Compared with the prior art, the technical solutions of the embodiments of the present invention have the following beneficial effects:

[0020] The stapler provided by this invention, in its first mode, utilizes a first motor to drive a gear structure that rotates a rack to move a firing lever. Simultaneously, a second motor, via a connector, drives a connecting rod, enabling efficient and stable tissue cutting and suturing operations. This is suitable for routine surgical scenarios and improves surgical efficiency. The return blade assembly allows the first return blade to disengage the first motor from the rack, while the second return blade disengages the connector from the sliding member. This allows for manual control of the firing lever, and the stapler head quickly returns to its original position, ensuring surgical safety and avoiding the risk of surgical interruption due to electrical malfunction. This invention integrates the manual switching of two transmission systems into a single action, simplifying the operation process, reducing the possibility of operational errors, and enhancing the adaptability and practicality of the stapler in medical applications. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the anastomosis device of the present invention in a first mode;

[0022] Figure 2 This is a schematic diagram of the anastomosis device of the present invention in a second mode;

[0023] Figure 3 yes Figure 2 A schematic diagram of the internal structure of the anastomosis device shown;

[0024] Figure 4 This is a structural schematic diagram of the first transmission assembly, the second transmission assembly, and the return tool assembly;

[0025] Figure 5 This is a schematic diagram of the structure of the first transmission component;

[0026] Figure 6 This is a schematic diagram of the second transmission component;

[0027] Figure 7 This is a schematic diagram of the first pass cutter section;

[0028] Figure 8 yes Figure 4 A sectional view;

[0029] Figure 9 yes Figure 4 Top view;

[0030] Figure 10This is an exploded view of the second transmission assembly;

[0031] Figure 11 yes Figure 3 A magnified view of the area circled in the middle. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0034] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] like Figures 1-4 As shown, the present invention provides a stapler 100, which includes a first transmission assembly 200, a second transmission assembly 300, and a return assembly 400, and has two working modes: a first mode and a second mode. The first transmission assembly 200 transmits power to components such as the staple cartridge of the stapler 100, driving the staples to be pushed out of the cartridge into the tissue, thereby achieving tissue cutting and anastomosis, and completing the tissue suturing operation. The second transmission assembly 300 enables the head of the stapler 100 to swing within a certain angle range relative to the body, allowing the stapler 100 to more flexibly reach the target anastomosis position, facilitating the surgeon to adjust the angle during surgery to adapt to the tissue anastomosis needs of different locations and angles.

[0036] The stapler 100 can be set to a first mode and a second mode. If the first mode malfunctions, it can be easily switched to the second mode via the return blade assembly 400. In the second mode, the second transmission assembly 300 automatically returns to its original position to prevent jamming of human tissue. The first transmission assembly 200 can be manually adjusted to remove the stapler 100 from the human body.

[0037] like Figure 1 As shown, in the first mode, the housing of the stapler 100 is provided with a top cover 110. When switching from the first mode to the second mode, the top cover 110 is removed and replaced with a device as shown in the diagram. Figure 2 The 120 wrench shown is sufficient.

[0038] like Figure 5 As shown, the first transmission assembly 200 includes a first motor 210, a gear structure 220 driven by the first motor 210, and a rack 230 meshing with the gear structure 220. The first motor 210 serves as a power source, and its output shaft is connected to the gear structure 220. The gear structure 220 includes a first gear 2201 connected to the output shaft of the first motor 210 and a second gear 2202 meshing with the first gear 2201. This gear transmission method can effectively transmit power and achieve adjustment of speed and torque. The rack 230 meshes with the second gear 2202. When the first motor 210 starts, the rack 230 is driven to reciprocate linearly in a first direction through the transmission of the gear structure 220. One end of the rack 230 is fixedly connected to a firing rod 240, thereby driving the firing rod 240 to move in the first direction, realizing the firing action of the stapler 100. In the first mode, the first motor 210 stably drives the gear structure 220, enabling the rack 230 and the firing rod 240 to complete the firing operation accurately and efficiently, ensuring the smooth cutting and suturing of tissues during surgery.

[0039] In this embodiment, the gear structure 220 includes a first gear 2201 and a second gear 2202, with power sequentially transmitted from the first motor 210 to the first gear 2201 and the second gear 2202. In another embodiment, the gear structure 220 may also include only the second gear 2202, in which case one side of the second gear 2202 is connected to the output shaft of the first motor 210, and the other side meshes with the rack 230, thus achieving power transmission. In yet another embodiment, the gear structure 220 may also include a first gear 2201, a second gear 2202, and a third gear meshing with the second gear 2202, etc.

[0040] like Figure 6 As shown, the second transmission assembly 300 includes a second motor 310, a slider 320, and a drive link 330. The second motor 310 drives the slider 320 to move along a first direction, and the slider 320 and the drive link 330 are movably connected through a connector 340. One end of the drive link 330 is sleeved on the outside of the firing rod 240 and connected to the firing rod 240. In this embodiment, the second transmission assembly 300 is actually a lead screw motion structure. In the first mode, the second motor 310 converts the rotational motion into linear motion through the lead screw structure, drives the slider 320 to move, and then drives the drive link 330 to reciprocate along the first direction through the connector 340. The drive link 330 is connected to the head swinging mechanism of the stapler, thereby swinging the head of the stapler 100.

[0041] The return blade assembly 400 is a key component for achieving the second mode switching, such as... Figure 4As shown, it includes a first return blade section 410, a second return blade section 420, and a third return blade section 430. A wrench 120 is fixedly connected to the first return blade section 410 via a locking part 4101. The first return blade section 410 is fixedly connected to the gear structure 220. The second return blade section 420 is connected to the connecting piece 340. The third return blade section 430 connects the first return blade section 410 and the second return blade section 420. When switching to the second mode, the operator pulls the wrench 120 by hand along a second direction perpendicular to the first direction. The first return blade section 410 is pulled up by the wrench 120 under external force, thereby driving the gear structure 220 (preferably the second gear 2202) to move synchronously, causing the gear structure 220 (preferably the second gear 2202) to disengage from the control of the first motor 210, thus disengaging the first motor 310 from the rack 230. At this time, the firing lever 240 can be manually controlled to reciprocate along the first direction by rotating the wrench 120. At the same time, the second return cutter 420, driven by the first return cutter 410, pushes the connector 340 along the second direction, causing the connector 340 to disengage from the sliding member 320, thereby switching both transmission systems to the second mode simultaneously.

[0042] like Figure 7 As shown, the first return section 410 includes a rotating rod 4102 connecting the wrench 120 and the gear structure 220. The rotating rod 4102 has an opening 4121 and a hook portion 4122. The engaging portion 4101 extends into the opening 4121 and connects with the hook portion 4122. Through this connection method, the engaging portion 4101, the rotating rod 4102, and the gear structure 220 are mutually fixed. Preferably, the engaging portion 4101 is a hook, but this is not a limitation.

[0043] When an external force is applied to the engaging part 4101, the engaging part 4101 can drive the rotating rod 4102 and the gear structure 220 to move synchronously in the second direction, thereby disengaging the gear structure 220 from the first motor 210. The operation is simple and reliable. In addition, a rotating rod sleeve 4103 is sleeved on the outer side of the rotating rod 4102. The rotating rod sleeve 4103 is fixedly connected to the rotating rod 4102 and the third return cutter part 430, respectively. The rotating rod sleeve 4103 plays a connecting and stabilizing role, ensuring the stability of the first return cutter part 410 during the movement, preventing loosening or displacement between the components, and ensuring the accuracy of the second mode switching.

[0044] like Figures 8-10As shown, the slider 320, the second return cutter 420, and the drive linkage 330 are arranged sequentially in a third direction, perpendicular to both the first and second directions, and are mutually fitted with a gap. This gap fit design facilitates the smooth disengagement of each component when switching to the second mode, preventing jamming. One end of the second return cutter 420 abuts against the connector 340, and the other end engages with the third return cutter 430. When the first return cutter 410 drives the third return cutter 430 to move, the third return cutter 430 drives the second return cutter 420 to push the connector 340 along the second direction, causing the connector 340 to disengage from the slider 320, thus realizing the second mode switching of the second transmission assembly 300.

[0045] The sliding member 320 is provided with a first slot 3201 for accommodating the first end of the connecting member 340, and the drive linkage 330 is provided with a second slot 3301 for accommodating the second end of the connecting member 340. This slot design can accurately position the connecting member 340, ensuring a stable connection between the connecting member 340, the sliding member 320, and the drive linkage 330 in the first mode, and ensuring effective power transmission. A pressure plate 350 and a first elastic member 360 are provided above the first end of the connecting member 340. When the connecting member 340 moves in the second direction to switch to the second mode, the first end of the connecting member 340 presses against the pressure plate 350, and the first elastic member 360 is compressed until the first end disengages from the first slot 3201. The pressure plate 350 and the first elastic member 360 serve a positioning and buffering function, preventing the connecting member 340 from disengaging from the sliding member 320 during normal operation, and providing buffering when switching to the second mode to avoid impact damage caused by instantaneous disengagement between components.

[0046] The second return cutter section 420 includes a horizontal bar section 4201 arranged along a first direction and a vertical bar section 4202 arranged along a second direction. The second end of the connector 340 is engaged with the horizontal bar section 4201 and can slide along the horizontal bar section 4201. This structural design makes the second return cutter section 420 more stable and reliable when pushing the connector 340, and also provides a certain amount of room for the connector 340 to move, which is convenient for operation in the second mode.

[0047] like Figure 3 and Figure 11 As shown, the stapler 100 also includes a fixing plate 500, in which the retraction assembly 400 is housed. At least one of the third retraction section 430 and the fixing plate 500 is provided with a limiting portion to limit the distance the retraction assembly 400 moves in the second direction.

[0048] Specifically, the limiting part includes a protrusion 510 on the fixed clamping plate 500 and a groove 4301 formed in the third return cutter part 430. The groove 4301 extends in the second direction, and the protrusion 510 is inserted into the groove 4301 and can slide along the groove 4301. The limiting structure effectively prevents the return cutter assembly 400 from moving excessively during operation, avoiding damage or misalignment of the components, and ensuring the safety and stability of the stapler 100 during the second mode switching process.

[0049] Furthermore, the fixed clamping plate 500 is also provided with a square groove 520 along the third direction. The third return cutter part 430 is inserted into the square groove 520 to form a slide rail, ensuring that the third return cutter part 430 slides vertically up and down without deflection or jamming.

[0050] In the first mode, power is turned on to start the first motor 210 and the second motor 310. The first motor 210 drives the gear structure 220, and the first gear 2201 drives the second gear 2202 to rotate, which in turn causes the rack 230 meshing with the second gear 2202 to reciprocate linearly in the first direction. The rack 230 drives the firing rod 240 to complete the firing action. At the same time, the second motor 310 drives the sliding member 320 to move in the first direction, and through the connecting member 340 drives the drive link 330 to reciprocate linearly in the first direction, ultimately realizing the swinging function of the head of the anastomosis device 100.

[0051] In the second mode, the gear structure 220 moves along a second direction perpendicular to the first direction under the drive of the first return cutter 410, causing the first motor 210 and rack 230 to disengage from the transmission. Simultaneously, the connector 340 disengages from the sliding member 320 under the action of the second return cutter 420. At this time, the second transmission component 300 automatically returns to the center to prevent the human tissue from being stuck. The rack 230 is manually adjusted by turning the wrench 120, thereby safely removing the stapler 100 from the human body.

[0052] When switching to the second mode is required, the engaging part 4101 is inserted into the opening 4121 of the rotating rod 4102. After the engaging part 4101 hooks the hooking part 4122 of the rotating rod 4102, the rotating rod 4102 is pulled upward. At this time, the rotating rod 4102 is in interference fit with the second gear 2202, driving the second gear 2202 to move in the second direction. The second gear 2202 disengages from the first gear 2201, freeing itself from the control of the first motor 210, thus realizing the switching of the first transmission assembly 200 to the second mode. During the upward pulling of the rotating rod 4102, the rotating rod sleeve 4103 is also driven to move upward. The rotating rod sleeve 4103 drives the third return cutter part 430 to move upward. The third return cutter part 430 drives the second return cutter part 420 to push the connecting member 340 upward, causing it to disengage from the sliding member 320 and the drive connecting rod 330. During this process, the first end of the connector 340 presses against the pressure plate 350, compressing the first elastic member 360 until the first end disengages from the first slot 3201 of the slider 320, thus switching the second transmission assembly 300 to the second mode. At this time, the doctor can manually control the firing lever 240 to reciprocate linearly along the first direction to perform corresponding operations.

[0053] In summary, the stapler 100 of the present invention achieves efficient switching between a first mode and a second mode through the first transmission assembly 200, the second transmission assembly 300, and the return blade assembly 400. In the first mode, the first motor 210 and the second motor 310 work together, and through the precise cooperation of components such as the gear structure 220, the rack 230, the slider 320, and the drive linkage 330, the precise and stable movement of the firing lever 240 and the drive linkage 330 is achieved, meeting the high requirements for tissue cutting and suturing during surgery. In the second mode, through the ingenious design of the return blade assembly 400, the surgeon can easily switch the stapler 100 from the first mode to the second mode and manually control the firing lever 240.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A stapler, characterized in that, include: The first transmission assembly includes a first motor, a gear structure driven by the first motor, and a rack meshing with the gear structure. One end of the rack is fixedly connected to the firing rod to drive the firing rod to move along a first direction. The second transmission assembly includes a second motor and a sliding member and a driving link driven by the second motor to move in a first direction. The sliding member and the driving link are movably connected by a connector. One end of the driving link is sleeved on the outside of the firing rod and connected to the firing rod. The return tool assembly includes a first return tool section fixedly connected to the gear structure, a second return tool section connected to the connector, and a third return tool section connecting the first return tool section and the second return tool section; The stapler has a first mode and a second mode. In the first mode, the first motor drives the rack to reciprocate through the gear structure to complete the firing action, and the second motor drives the drive linkage to reciprocate through the connector to swing the head of the stapler. In the second mode, the gear structure moves along a second direction perpendicular to the first direction under the drive of the first return blade, so that the first motor and the rack are disengaged from the transmission, and the connector is simultaneously disengaged from the sliding member under the action of the second return blade.

2. The stapler according to claim 1, characterized in that, In the second mode, the anastomosis device includes a wrench, which is fixedly connected to the first return blade part through a locking part. By rotating the wrench, the firing rod can be manually controlled to reciprocate along the first direction.

3. The stapler according to claim 2, characterized in that, The first return blade includes a rotating rod connecting the wrench and the gear structure. The rotating rod has an opening and a hook. The hook extends into the opening and connects with the hook, so that the hook, the rotating rod and the gear structure are fixed to each other, so that the hook drives the rotating rod and the gear structure to move synchronously in the second direction.

4. The stapler according to claim 3, characterized in that, A rotating rod sleeve is fitted on the outer side of the rotating rod, and the rotating rod sleeve is fixedly connected to the rotating rod and the third return cutter section respectively.

5. The stapler according to claim 1, characterized in that, The gear structure includes a first gear connected to the output shaft of the first motor and a second gear meshing with the first gear, and the rack meshes with the second gear.

6. The stapler according to claim 1, characterized in that, The sliding member, the second return cutter, and the driving link are arranged sequentially in a third direction that is perpendicular to both the first and second directions and are fitted with gaps between each other. One end of the second return cutter abuts against the connecting member, and the other end is engaged with the third return cutter. The second return cutter is driven by the third return cutter to push the connecting member away from the sliding member along the second direction.

7. The stapler according to claim 6, characterized in that, The sliding member is provided with a first slot for accommodating the first end of the connector, and the driving link is provided with a second slot for accommodating the second end of the connector. A pressure plate and a first elastic member are provided above the first end of the connector. When the connector moves in the second direction, the first end presses against the pressure plate and the first elastic member is compressed until the first end disengages from the first slot.

8. The stapler according to claim 7, characterized in that, The second return section includes a horizontal bar section arranged along a first direction and a vertical bar section arranged along a second direction. The second end of the connector is engaged with the horizontal bar section and can slide along the horizontal bar section.

9. The stapler according to claim 1, characterized in that, It also includes a fixed clamping plate, in which the return tool assembly is housed, and at least one of the third return tool part and the fixed clamping plate is provided with a limiting part to limit the distance the return tool assembly moves in the second direction.

10. The stapler according to claim 9, characterized in that, The limiting part includes a protrusion provided on the fixed clamp and a sliding groove opened in the third return cutter part. The sliding groove extends in the second direction, and the protrusion is inserted into the sliding groove and can slide along the sliding groove.

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