Cutting knife structure and staple cartridge assembly

Abstract

The present application relates to a cutting knife structure and a cartridge assembly, comprising an assembly base, a cutting knife component and a driving assembly, the assembly base is provided with a knife accommodating cavity, the knife accommodating cavity is provided with a first cavity opening and a first movement track passing through the first cavity opening, the cutting knife component is movably arranged in the knife accommodating cavity along the first movement track, and the cutting knife component is used for being exposed from the first cavity opening along the first movement track or being retracted into the knife accommodating cavity along the first movement track, the driving assembly is arranged on the assembly base, and the driving assembly is used for driving the cutting knife component to reciprocate along the first movement track. When the assembly base moves, the driving assembly drives the cutting knife component to be exposed from the first cavity opening, the cutting action on the target tissue is completed by using the cutting knife component, the driving assembly can also drive the cutting knife component to be retracted into the knife accommodating cavity along the first movement track, and at least part or the whole cutting knife component can be retracted into the knife accommodating cavity when the cutting knife component needs to be accommodated, so that the cutting knife component is prevented from being exposed and causing accidental injury.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a cutting blade structure and a staple cartridge assembly. Background Technology

[0002] Laparoscopic surgery utilizes minimally invasive surgical techniques. Compared to open surgery, laparoscopic surgery can significantly shorten the average length of hospital stay, reduce patient recovery time, decrease patient discomfort, and reduce surgical side effects. However, the confined space of laparoscopic surgery places higher demands on the flexibility, reliability, compactness, and operability of the instruments.

[0003] Anastomosing devices, capable of simultaneously cutting and suturing, are increasingly widely used in clinical practice. An anastomosis device consists of two main parts: the device body and the stapler cartridge assembly. Currently, common anastomosing devices are categorized into two types based on the structural position of the cutting blade: those where the cutting blade is integrated into the device body and those where the cutting blade is integrated into the stapler cartridge assembly. The latter type offers significant advantages, as the cutting blade within the cartridge assembly does not wear down with repeated use, thus ensuring effective cutting. However, in existing anastomosing devices where the cutting blade is integrated into the cartridge assembly, the blade needs to extend beyond the surface of the cartridge assembly and slide along a guide groove under external force. This extension poses a risk of injury to the operator or patient, compromising surgical safety. Summary of the Invention

[0004] Therefore, it is necessary to provide a cutting blade structure and a staple cartridge assembly to address the aforementioned technical problems.

[0005] This invention provides a cutting blade structure, the cutting blade structure comprising:

[0006] An assembly base is provided with a tool receiving chamber, the tool receiving chamber having a first opening and a first movement trajectory passing through the first opening;

[0007] A cutting blade component is movably mounted in the blade receiving chamber along the first movement trajectory, for protruding from the first chamber opening or retracting into the blade receiving chamber along the first movement trajectory.

[0008] A drive assembly is disposed on the mounting base and is used to drive the cutter component to reciprocate along the first motion trajectory.

[0009] In one embodiment, the driving component includes:

[0010] An elastic component is provided, wherein the cutting component is elastically mounted in the blade receiving chamber via the elastic component, and the elastic component is used to drive the cutting component to retract into the blade receiving chamber along the first motion trajectory.

[0011] In one embodiment, the driving component includes:

[0012] A conversion component is disposed within the blade chamber and is drivenly connected to the cutting blade component.

[0013] A driving component, which drives the assembly base and the conversion component to move, and uses the conversion component to drive the cutting component to protrude from the first compartment opening along the first motion trajectory.

[0014] In one embodiment, the driving component includes:

[0015] The drive shaft has a shaft hole, and the drive shaft is driven to be assembled in the shaft hole to drive the drive component to cooperate with the assembly base.

[0016] In one embodiment, the driving component is provided with a first limiting structure, which is used to limit the movement range of the cutting component along the first motion trajectory by engaging with the cutting component outside the first compartment opening; and / or,

[0017] The drive component has a contact surface, wherein the cutter component includes a blade and a back of the blade, and the contact surface is used to contact the back of the blade of the cutter component for force transmission.

[0018] In one embodiment, the blade chamber has a second opening, and the driving component is provided with a driving protrusion for movably passing through the second opening, and the driving protrusion engages with the conversion component inside the blade chamber via the second opening.

[0019] In one embodiment, the blade chamber has a second motion trajectory passing through the second chamber opening, and the driving component moves along the second motion trajectory, wherein the first motion trajectory and the second motion trajectory are both straight lines, and the first motion trajectory and the second motion trajectory are perpendicular to each other.

[0020] In one embodiment, the conversion component has a driving ramp, and the driving component slides with the driving ramp to drive the conversion component to move along the first motion trajectory. The conversion component is driven to connect with the cutting component, thereby causing the cutting component to protrude from the first compartment opening.

[0021] In one embodiment, a second limiting structure is provided within the blade chamber. This second limiting structure engages with the cutting blade component to limit the range of motion of the cutting blade component along the first motion trajectory; and / or,

[0022] The blade chamber has a third limiting structure inside, which cooperates with the driving inclined surface to limit the range of motion of the conversion component along the first motion trajectory.

[0023] In one embodiment, the second limiting structure includes a first limiting protrusion and a second limiting protrusion disposed within the blade chamber; the cutting blade component is provided with a mating limiting protrusion; the elastic component is connected between the first limiting protrusion and the mating limiting protrusion; and the mating limiting protrusion engages with the second limiting protrusion for limiting; and / or

[0024] The third limiting structure is a limiting inclined surface disposed within the blade chamber, and the limiting inclined surface cooperates with the driving inclined surface for limiting.

[0025] In one embodiment, the conversion component includes:

[0026] A linkage component, which is movably installed through the second compartment opening;

[0027] A connecting rod is provided, one end of which is hinged to the linkage member, and the other end of which is hinged to the cutter component. The driving component is driven to cooperate with the linkage member to drive the linkage member to move, thereby driving the cutter component to protrude from the first compartment opening through the connecting rod.

[0028] In one embodiment, the cutter component is provided with a hinge protrusion, the connecting rod is hinged to the hinge protrusion, and the elastic component is disposed between the hinge protrusion and the wall of the blade chamber.

[0029] In one embodiment, the conversion component includes:

[0030] A guide member is movably inserted through the second compartment opening. The guide member is provided with a guide rail, and the cutter component is provided with a guide portion. The guide portion slides in cooperation with the guide rail. The driving component drives the guide member to slide along the guide rail, thereby driving the cutter component to protrude from the first compartment opening.

[0031] In one embodiment, the elastic member is elastically assembled with the cutter member via the guide member, for driving the guide portion to slide along the guide rail, thereby driving the cutter member to retract into the blade chamber.

[0032] In one embodiment, the cutting blade structure includes:

[0033] A pusher wedge seat, wherein the assembly base is fixedly assembled with the pusher wedge seat.

[0034] This invention provides a staple cartridge assembly, the staple cartridge assembly comprising:

[0035] Device body;

[0036] The cutting blade structure is assembled on the device body;

[0037] A control structure is mounted on the device body and is drivenly connected to the cutting blade structure.

[0038] In the aforementioned cutting blade structure and staple cartridge assembly, while the mounting base moves along the predetermined cutting direction of the stapler, the drive assembly simultaneously drives the cutting blade component to protrude from the first compartment opening along the first motion trajectory. Thus, when the mounting base moves, the cutting blade component completes the cutting action on the target tissue. Moreover, the drive assembly can also drive it to retract into the blade compartment along the first motion trajectory as needed. Furthermore, when it is necessary to store the cutting blade component, it can control at least a part or the entire cutting blade component to retract into the blade compartment, avoiding accidental injury caused by the exposed cutting blade component.

[0039] Furthermore, because the assembly base serves as the basic structure for assembly, integrating the cutter component and the drive assembly into a single, independent unit, the drive assembly's control over the cutter component's movement—whether it protrudes from or retracts into the receiving chamber—can be performed independently based on the cutter's independent structure. This does not require the assistance of other structures within the stapler's cartridge assembly. Therefore, as the assembly base moves along the predetermined cutting direction of the stapler, the drive assembly's motion control over the assembly base and the cutter component allows for precise control of the cutter component's protrusion or retraction from the receiving chamber at any position within the assembly base's movement, according to usage requirements. This enhances control flexibility and safety. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of a cutting blade structure provided in one embodiment of the present invention;

[0041] Figure 2 For example Figure 1 A first exploded structural diagram of the cutting blade structure shown;

[0042] Figure 3 For example Figure 1 The diagram shows the second exploded structure of the cutting blade structure.

[0043] Figure 4 For example Figure 1 The diagram shows the structure of the blade holder in the cutting blade structure.

[0044] Figure 5 For example Figure 1 An exploded view of the internal structure of the cutting blade shown.

[0045] Figure 6 For example Figure 1 The diagram shows the internal assembly of the cutting blade structure.

[0046] Figure 7 This is a schematic diagram of a cutting blade structure provided in another embodiment of the present invention;

[0047] Figure 8 For example Figure 7 A first exploded structural diagram of the cutting blade structure shown;

[0048] Figure 9 For example Figure 7 The diagram shows the second exploded structure of the cutting blade structure.

[0049] Figure 10 For example Figure 7 An exploded view of the internal structure of the cutting blade shown.

[0050] Figure 11 For example Figure 7 The diagram shows the internal assembly of the cutting blade structure.

[0051] Figure 12 This is an exploded structural diagram of a cutting blade structure provided in another embodiment of the present invention;

[0052] Figure 13 For example Figure 12 An exploded view of the internal structure of the cutting blade shown.

[0053] Figure 14 For example Figure 12 The diagram shows the internal assembly of the cutting blade structure.

[0054] Icon labels:

[0055] 1000, Assembly base; 2000, Cutting blade assembly; 3000, Drive assembly; 4000, Elastic component; 5000, Push pin wedge seat;

[0056] 1100, blade compartment; 1200, first compartment opening; 1300, second compartment opening;

[0057] 1100a, First trajectory; 1100b, Second trajectory;

[0058] 3100, Drive component; 3200, Conversion component; 3300, Drive shaft;

[0059] 3110, shaft hole; 3120, first limiting structure; 3130, mating surface; 3140, driving protrusion;

[0060] 3211. Driving inclined plane; 3212. Second limiting structure; 3213. Third limiting structure;

[0061] 3212a, First limiting protrusion; 3212b, Second limiting protrusion; 3212c, Matching limiting protrusion; 3213a, Limiting slope;

[0062] 3221. Linkage component; 3222. Connecting rod; 3223. Hinge protrusion;

[0063] 3231, guide component; 3231a, guide rail; 3231b, guide section. Detailed Implementation

[0064] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0069] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0070] See Figures 1 to 6 As shown, an embodiment of the present invention provides a cutting blade structure, the cutting blade structure including an assembly base 1000, a cutting blade component 2000, and a drive assembly 3000. The assembly base 1000 has a blade receiving chamber 1100, the blade receiving chamber 1100 having a first opening 1200 and a first movement trajectory 1100a passing through the first opening 1200. The cutting blade component 2000 is movably mounted in the blade receiving chamber 1100 along the first movement trajectory 1100a, for protruding from the first opening 1200 or retracting into the blade receiving chamber 1100 along the first movement trajectory 1100a. The drive assembly 3000 is disposed on the assembly base 1000, and the drive assembly 3000 is used to drive the cutting blade component 2000 to reciprocate along the first movement trajectory 1100a.

[0071] See Figure 1 and Figure 2As shown, the assembly base 1000 is a structure that provides an assembly position for the cutter component 2000 and the drive assembly 3000. The assembly base 1000 can assemble the cutter component 2000 and the drive assembly 3000 into a single structural unit. Using the assembly base 1000, the cutter component 2000 and the drive assembly 3000 can be assembled into the staple cartridge assembly of the stapler. Therefore, the assembly base 1000 can be assembled with the staple pusher wedge 5000 of the staple cartridge assembly. The assembly base 1000 and the staple pusher wedge 5000 can move synchronously in the staple cartridge assembly to achieve synchronous cutting and suturing. It should be noted that the assembly base 1000 and the staple pusher wedge 5000 of the staple cartridge assembly can be a single integrally formed part or two independent parts assembled together. Those skilled in the art can choose the part form of the assembly base 1000 and the staple pusher wedge 5000 and the assembly method in the staple cartridge assembly according to their needs, which is not limited here.

[0072] Continue reading Figures 3 to 6 As shown, the assembly base 1000 can accommodate the cutting component 2000 through the blade container 1100. Therefore, the cutting component 2000 can be stored in the blade container 1100 when storage is required, thereby preventing accidental injury to staff or patients when the cutting component 2000 is exposed in the staple cartridge assembly. The assembly base 1000 can be configured to move along the guide groove in the staple cartridge assembly and perform cutting action using the cutting component 2000. That is, the assembly base 1000 moves along the predetermined cutting direction of the stapler and performs cutting action using the cutting component 2000 on the assembly base 1000 while the assembly base 1000 moves. Therefore, after the drive assembly 3000 and the assembly base 1000 are assembled, controlling the movement of the drive assembly 3000 along the predetermined cutting direction of the stapler can control the synchronous movement of the assembly base 1000 along the predetermined cutting direction of the stapler.

[0073] Simultaneously, the drive assembly 3000 synchronously drives the cutting component 2000 to protrude from the first compartment opening 1200 along the first motion trajectory 1100a. Then, when the assembly base 1000 moves along the predetermined cutting direction of the stapler, the drive assembly 3000 controls the cutting component 2000 to protrude from the first compartment opening 1200 and complete the cutting action on the target tissue. Furthermore, the drive assembly 3000 can also retract along the first motion trajectory 1100a into the blade receiving compartment 1100 as needed. When it is necessary to store the cutting component 2000, it can also control at least a portion or the entire cutting component 2000 to retract into the blade receiving compartment 1100, preventing accidental injury from exposed cutting component 2000.

[0074] Because the assembly base 1000 serves as the basic structure for assembly, integrating the cutter component 2000 and the drive assembly 3000 into a single unit, the drive assembly 3000 can independently control the cutter component 2000 to protrude from or retract into the blade magazine 1100. This independent operation does not require the assistance of other structures within the stapler magazine assembly. Therefore, during the positional movement of the assembly base 1000 along the predetermined cutting direction of the stapler, the drive assembly 3000's motion control over the assembly base 1000 and the cutter component 2000 allows the cutter component 2000 to protrude from or retract into the blade magazine 1100 at any position within the assembly base 1000's movement, according to usage requirements. This enhances control flexibility and safety.

[0075] For example, in the non-working state where the assembly base 1000 is in its initial position along the predetermined cutting direction of the stapler, the drive assembly 3000 can control the cutter component 2000 to retract into the blade reservoir 1100 from the initial position. As the drive assembly 3000 moves the assembly base 1000 along the predetermined cutting direction of the stapler, it can simultaneously drive the cutter component 2000 to emerge from the blade reservoir 1100 to perform the cutting action along the predetermined cutting direction. When the assembly base 1000 reaches its end position, the cutting task on the target tissue is complete, so the drive assembly 3000 can drive the cutter component 2000 to retract into the blade reservoir 1100. Even during the movement of the assembly base 1000 along the predetermined cutting direction of the stapler, the drive assembly 3000 can also drive the cutter component 2000 to retract into the blade reservoir 1100 at any time as needed, thus performing emergency retraction.

[0076] The drive assembly 3000 can drive the cutting component 2000 to retract into the blade holder 1100 in various ways, such as mechanical drive or electronic drive. In one embodiment, the drive assembly 3000 includes an elastic component 4000, which can be a deformable and resilient element such as a spring or sheet. The elastic component 4000 can be assembled in a normal or slightly compressed elastic state. In this state, the elastic component 4000 can apply an elastic force. At this time, the... The cutting component 2000 is elastically assembled in the blade receiving chamber 1100 via the elastic component 4000. By setting the assembly position and assembly angle of the cutting component 2000 and the elastic component 4000 in the blade receiving chamber 1100, the direction and magnitude of the elastic force applied by the elastic component 4000 to the cutting component 2000 can be controlled. Therefore, the elastic force applied by the elastic component 4000 can drive the cutting component 2000 to retract into the blade receiving chamber 1100 along the first motion trajectory 1100a.

[0077] Because the elastic force of the elastic member 4000 can continuously apply to the cutter member 2000, when the elastic force is not overcome by other driving forces of the drive assembly 3000, the elastic force can continuously keep the cutter member 2000 retracted to the retracted state of the blade chamber 1100 along the first motion trajectory 1100a. Therefore, along the predetermined cutting direction of the stapler, in the non-working state of the assembly base 1000 in the initial position, the elastic member 4000 in the drive assembly 3000 can use the elastic force to control the cutter member 2000 to retract to the blade chamber 1100 in the initial position. Before the drive assembly 3000 applies a driving force to the cutter member 2000 to expose the cutter member 2000 from the blade chamber 1100, and before the applied driving force overcomes the elastic force applied by the elastic member 4000 to the cutter member 2000, the cutter member 2000 will continue to be retracted in the blade chamber 1100.

[0078] When the drive assembly 3000 drives the assembly base 1000 to move in position along the predetermined cutting direction of the stapler, the drive assembly 3000 can not only push the assembly base 1000 to move in position, but also apply a driving force to the cutter component 2000. The driving force overcomes the elastic force applied to the cutter component 2000 by the elastic component 4000, so that the drive cutter component 2000 is exposed from the blade compartment 1100. Therefore, during the process of the drive component 3000 pushing the assembly base 1000 to move, the drive component 3000 can stop pushing at any time. Stopping pushing means that the drive component 3000 has removed the force applied to the assembly base 1000 and the cutter component 2000. At this time, the driving force applied by the drive component 3000 to the cutter component 2000 is removed. After the driving force disappears, the elastic component 4000 will use the elastic force to continue to control the cutter component 2000 to retract into the blade holder 1100, thereby realizing the retraction and storage of the cutter component 2000 at any position.

[0079] If the drive assembly 3000 continues to push the assembly base 1000 to move, the cutter component 2000 will continue to protrude from the receiving chamber 1100 under the driving force of the drive assembly 3000, and perform cutting action along the predetermined cutting direction of the stapler. When the assembly base 1000 moves to the end position, the cutting task of the target tissue has been completed. The drive assembly 3000 will stop pushing the assembly base 1000 at the end position and remove the force applied to the assembly base 1000 and the cutter component 2000. At this time, the driving force applied by the drive assembly 3000 to the cutter component 2000 is removed. After the driving force disappears, the elastic component 4000 will continue to control the cutter component 2000 to retract into the receiving chamber 1100 using the elastic force, thereby realizing the retraction and storage of the cutter component 2000 at the end position.

[0080] It should be noted that the movement of the cutter component 2000 is a change in the position of the entire component. Because the cutter component 2000 is movably mounted in the blade receiving chamber 1100 along the first motion trajectory 1100a, and is exposed from the first chamber opening 1200 or retracted into the blade receiving chamber 1100 along the first motion trajectory 1100a, the driving force applied by the drive assembly 3000 to the cutter component 2000 is actually used to drive the cutter component 2000 to move along the first motion trajectory 1100a, so that the cutter component 2000 can move stably along the predetermined trajectory. The drive assembly 3000 can drive the cutter component 2000 in various ways.

[0081] In one embodiment, the drive assembly 3000 includes a conversion component 3200 and a drive component 3100. The conversion component 3200 is disposed within the blade chamber 1100 and is driven to the cutter component 2000. The drive component 3100 is driven to cooperate with the assembly base 1000 and the conversion component 3200. The drive component 3100 can not only drive the assembly base 1000 to move, causing the assembly base 1000 to move along the predetermined cutting direction of the stapler, but also apply a driving force to the conversion component 3200. Then, the conversion component 3200 is used to redirect the direction of the driving force, and the rotating component indirectly drives the cutter component 2000 to protrude from the first chamber opening 1200 along the first motion trajectory 1100a. Therefore, the drive component 3100 can be used to drive the assembly base 1000 and the cutter component 2000 to move simultaneously, so as to realize the simultaneous implementation of the two actions of moving the assembly base 1000 and exposing the cutter component 2000, providing the controller with a good control experience.

[0082] In one embodiment, the drive assembly 3000 includes a drive shaft 3300, and the drive component 3100 has a shaft hole 3110. The drive shaft 3300 is driven and assembled in the shaft hole 3110 to drive the drive component 3100 to engage with the assembly base 1000. Therefore, when the cutting blade structure is assembled in the stapler, the control structure such as the power box in the stapler can form a drive connection with the drive shaft 3300. The power box is used to provide the power to control the drive shaft 3300 to push the drive component 3100, so that the operator can conveniently control the drive component 3100 to perform driving actions using the power box.

[0083] In one embodiment, the driving component 3100 is provided with a first limiting structure 3120. The first limiting structure 3120 is used to limit the movement range of the cutting component 2000 along the first movement trajectory 1100a outside the first compartment opening 1200. The first limiting structure 3120 mainly limits the cutting component 2000 by limiting its movement with the top of the cutting component 2000. The first limiting structure 3120 can take various forms, such as a protrusion, groove, or plate-like structure formed on the driving component 3100. By being set at a reasonable position on the driving component 3100, the first limiting structure 3120 can limit the height of the cutting component 2000 exposed from the first compartment opening 1200, ensuring that the cutting height of the cutting component 2000 is within the expected range.

[0084] Meanwhile, the driving component 3100 has a contact surface 3130, wherein the cutting component 2000 includes a blade and a back of the blade. The contact surface 3130 is used to force-transmitting contact with the back of the blade of the cutting component 2000. Therefore, when the driving component 3100 pushes the mounting base 1000, it can also form a good contact with the exposed back of the blade of the cutting component 2000 using the contact surface 3130. The contact between the contact surface 3130 and the back of the blade of the cutting component 2000 can not only apply a supplementary force to the cutting component 2000 simultaneously to prevent the cutting component 2000 from shifting, but also maintain the stability of the cutting component 2000 during the cutting process and improve the cutting effect of the cutting component 2000.

[0085] Furthermore, the first limiting structure 3120 limits the cutting component 2000 by engaging with the top of the cutting component 2000, and the contact surface 3130 forms a good contact with the exposed back of the cutting component 2000. Therefore, the first limiting structure 3120 and the contact surface 3130 can simultaneously engage with the cutting component 2000 at two positions, ensuring the stability of the cutting component 2000 in blade extension and cutting.

[0086] The driving component 3100 can apply a driving force to the cutting component 2000 in various ways. For example, the driving component 3100 can apply a magnetic driving force to the cutting component 2000 through non-contact magnetic drive, or it can apply a mechanical driving force to the cutting component 2000 through contact mechanical drive. In one embodiment, the blade receiving chamber 1100 has a second opening 1300, and the driving component 3100 is provided with a driving protrusion 3140. Therefore, the driving component 3100 can be movably inserted through the second opening 1300 using the driving protrusion 3140. When the driving component 3100 pushes the mounting base 1000, the driving component 3100 can simultaneously use the driving protrusion 3140 to drive the conversion component 3200 in the blade receiving chamber 1100 through the second opening 1300, thereby using the conversion component 3200 to drive the cutting component 2000 to move in position.

[0087] In one embodiment, the blade holder 1100 has a second motion trajectory 1100b passing through the second compartment opening 1300. The driving component 3100 moves along the second motion trajectory 1100b. The first motion trajectory 1100a and the second motion trajectory 1100b are both straight lines and are perpendicular to each other. Therefore, the second motion trajectory 1100b can be parallel to the cutting direction in the stapler. Thus, the driving component 3100 can drive the assembly base 1000 to move along the second motion trajectory 1100b and simultaneously apply a driving force to the conversion component 3200 along the second motion trajectory 1100b. The first motion trajectory 1100a and the second motion trajectory 1100b are perpendicular to each other, causing the cutting component 2000 to protrude from the blade holder 1100 along a direction perpendicular to the cutting direction of the stapler. In addition, those skilled in the art can construct other trajectory forms and other mutually cooperating angles for the first motion trajectory 1100a and the second motion trajectory 1100b as needed, without limitation.

[0088] See Figures 3 to 6 As shown, in one embodiment, the conversion component 3200 has a driving ramp 3211, and the driving component 3100 slides on the driving ramp 3211. Therefore, the cooperation between the driving component 3100 and the driving ramp 3211 can be used to change the direction of the driving force. After the driving component 3100 applies a driving force to the driving ramp 3211, the sliding cooperation of the driving component 3100 on the driving ramp 3211 can convert the driving force into the movement of the conversion component 3200 along the first motion trajectory 1100a. Therefore, the cooperation between the driving component 3100 and the driving ramp 3211 can be used to drive the conversion component 3200 along the first motion trajectory. The first motion trajectory 1100a is driven by the conversion component 3200 and the cutting component 2000. When the conversion component 3200 moves along the first motion trajectory 1100a, it can also synchronously drive the cutting component 2000 to emerge from the first compartment opening 1200 along the first motion trajectory 1100a. The drive connection between the conversion component 3200 and the cutting component 2000 can be achieved through slot insertion, snap-fit ​​connection, pin connection, etc. Moreover, those skilled in the art can reasonably construct the tilt angle of the driving inclined surface 3211 relative to the assembly base 1000, the direction of the driving force, and the direction of the first motion trajectory 1100a according to specific assembly requirements, which is not limited here.

[0089] See Figures 4 to 6As shown, a second limiting structure 3212 is provided in the blade receiving chamber 1100. The second limiting structure 3212 cooperates with the cutting blade component 2000 to limit the range of motion of the cutting blade component 2000 along the first motion trajectory 1100a. For example, the second limiting structure 3212 includes a first limiting protrusion 3212a and a second limiting protrusion 3212b provided in the blade receiving chamber 1100. The cutting blade component 2000 is provided with a cooperating limiting protrusion 3212c. The elastic component 4000 is connected between the first limiting protrusion 3212a and the cooperating limiting protrusion 3212c. The cooperating limiting protrusion 3212c cooperates with the second limiting protrusion 3212b.

[0090] See Figures 4 to 6 As shown, the tool holder 1100 has a third limiting structure 3213 inside. The third limiting structure 3213 cooperates with the driving inclined surface 3211 to limit the range of motion of the conversion component 3200 along the first motion trajectory 1100a. For example, the third limiting structure 3213 is a limiting inclined surface 3213a provided in the tool holder 1100, and the limiting inclined surface 3213a cooperates with the driving inclined surface 3211.

[0091] See Figures 7 to 11 As shown, in one embodiment, the conversion component 3200 includes a linkage 3221 and a connecting rod 3222. The linkage 3221 is movably inserted through the second compartment opening 1300. One end of the connecting rod 3222 is hinged to the linkage 3221, and the other end is hinged to the cutter component 2000. The driving component 3100 drives the linkage 3221 to move, thereby driving the cutter component 2000 to protrude from the first compartment opening 1200 via the connecting rod 3222. Therefore, the linkage 3221 and the connecting rod 3222 are connected... The drive mechanism can be used to change the direction of the driving force. After the drive component 3100 applies a driving force to the linkage 3221, it will drive the linkage 3221 to move. When the linkage 3221 moves, it will drive the connecting rod 3222 to rotate. This includes the rotation of the hinge position between the linkage 3221 and the connecting rod 3222, as well as the rotation of the hinge position between the connecting rod 3222 and the cutter component 2000. Thus, the direction of the driving force is changed through the connecting rod 3222, thereby driving the cutter component 2000 to emerge from the first compartment opening 1200 along the first motion trajectory 1100a.

[0092] For example, the cutter component 2000 is provided with a hinge protrusion 3223, and the connecting rod 3222 can be hinged to the hinge protrusion 3223. In this case, the elastic component 4000 can be disposed between the hinge protrusion 3223 and the wall of the blade receiving chamber 1100. The elastic component 4000 can apply an elastic force to the cutter component 2000 through the hinge protrusion 3223 based on the wall of the blade receiving chamber 1100. In addition, those skilled in the art can reasonably construct the assembly position of the linkage 3221 and the connecting rod 3222, the direction of the driving force, and the direction of the first motion trajectory 1100a according to specific assembly requirements, which are not limited here.

[0093] See Figures 12 to 14 As shown, in one embodiment, the conversion component 3200 includes a guide member 3231, which is movably inserted through the second compartment opening 1300. Therefore, the guide member 3231 can maintain stability in its movement within the blade receiving chamber 1100 by using the structure of the first compartment opening 1200 as its motion trajectory. The guide member 3231 may have a portion of protruding structure that movably inserts through the first compartment opening 1200, while other positions on the guide member 3231 may be provided with guide rails 3231a. The cutting component 2000 is provided with a guide portion 3231b, which slides in conjunction with the guide rails 3231a. Therefore, the sliding contact between the guide portion 3231b and the guide rails 3231a can be used to transfer the driving force... The driving component 3100 drives the guide component 3231 to change direction. When the driving component 3100 drives the guide part 3231b to slide along the guide rail 3231a, based on the oblique sliding cooperation between the guide part 3231b and the guide rail 3231a, the cutter component 2000 will be driven to protrude from the first compartment opening 1200 along the first motion trajectory 1100a. The guide rail 3231a can adopt a hole structure, groove structure or other structure with guiding function. Those skilled in the art can reasonably construct the tilt angle of the guide rail 3231a relative to the assembly base 1000, the direction of the driving force, and the direction of the first motion trajectory 1100a according to specific assembly requirements. No limitation is made here.

[0094] At this time, the elastic component 4000 can be indirectly elastically assembled with the cutter component 2000 through the guide 3231. The elastic component 4000 uses elastic force to drive the guide portion 3231b to slide along the guide rail 3231a. Based on the oblique sliding cooperation between the guide portion 3231b and the guide rail 3231a, the elastic force can reversely drive the cutter component 2000 to retract into the blade chamber 1100 along the first motion trajectory 1100a.

[0095] This invention provides a staple cartridge assembly, comprising a device body, a cutting blade structure, and a control structure. The cutting blade structure is mounted on the device body, and the control structure is mounted on the device body, with the control structure being drivenly connected to the cutting blade structure. Since the specific structure, functional principle, and technical effects of the cutting blade structure have been detailed above, they will not be repeated here. Any technical details regarding the cutting blade structure can be found in the preceding description.

[0096] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A cutting blade structure, characterized in that, The cutting blade structure includes: An assembly base is provided with a tool receiving chamber, the tool receiving chamber having a first opening and a first movement trajectory passing through the first opening; A cutting blade component is movably mounted in the blade receiving chamber along the first movement trajectory, for protruding from the first chamber opening or retracting into the blade receiving chamber along the first movement trajectory. A drive assembly is disposed on the assembly base and is used to drive the cutting component to reciprocate along the first motion trajectory. The drive assembly includes a conversion component and a drive component. The conversion component is disposed in the blade housing and is drivenly connected to the cutting component. The drive component is drivenly engaged with the assembly base and the conversion component to drive the assembly base to move, and the conversion component is used to drive the cutting component to protrude from the first housing opening along the first motion trajectory.

2. The cutting blade structure according to claim 1, characterized in that, The driving component includes: An elastic component is provided, wherein the cutting component is elastically mounted in the blade receiving chamber via the elastic component, and the elastic component is used to drive the cutting component to retract into the blade receiving chamber along the first motion trajectory.

3. The cutting blade structure according to claim 1, characterized in that, The driving component includes: The drive shaft has a shaft hole, and the drive shaft is driven to be assembled in the shaft hole to drive the drive component to cooperate with the assembly base.

4. The cutting blade structure according to claim 1, characterized in that, The driving component is provided with a first limiting structure, which is used to limit the movement range of the cutting component along the first motion trajectory by engaging with the cutting component outside the first compartment opening; and / or, The drive component has a contact surface, wherein the cutter component includes a blade and a back of the blade, and the contact surface is used to contact the back of the blade of the cutter component for force transmission.

5. The cutting blade structure according to claim 2, characterized in that, The tool holder has a second opening, and the driving component is provided with a driving protrusion. The driving protrusion is used to movably pass through the second opening, and the driving protrusion engages with the conversion component inside the tool holder via the second opening.

6. The cutting blade structure according to claim 5, characterized in that, The blade chamber has a second motion trajectory passing through the second chamber opening, and the driving component moves along the second motion trajectory. The first motion trajectory and the second motion trajectory are both straight lines, and the first motion trajectory and the second motion trajectory are perpendicular to each other.

7. The cutting blade structure according to claim 5, characterized in that, The conversion component has a driving ramp, and the driving component slides with the driving ramp to drive the conversion component to move along the first motion trajectory. The conversion component is driven to connect with the cutting component, thereby causing the cutting component to protrude from the first compartment opening.

8. The cutting blade structure according to claim 7, characterized in that, The blade holder is provided with a second limiting structure, which cooperates with the cutting blade component to limit the range of motion of the cutting blade component along the first motion trajectory; and / or The blade chamber has a third limiting structure inside, which cooperates with the driving inclined surface to limit the range of motion of the conversion component along the first motion trajectory.

9. The cutting blade structure according to claim 8, characterized in that, The second limiting structure includes a first limiting protrusion and a second limiting protrusion disposed within the blade chamber. The cutting blade component is provided with a mating limiting protrusion. The elastic component connects between the first limiting protrusion and the mating limiting protrusion, and the mating limiting protrusion engages with the second limiting protrusion for limiting; and / or, The third limiting structure is a limiting inclined surface disposed within the blade chamber, and the limiting inclined surface cooperates with the driving inclined surface for limiting.

10. The cutting blade structure according to claim 5, characterized in that, The conversion component includes: A linkage component, which is movably installed through the second compartment opening; A connecting rod is provided, one end of which is hinged to the linkage member, and the other end of which is hinged to the cutter component. The driving component is driven to cooperate with the linkage member to drive the linkage member to move, thereby driving the cutter component to protrude from the first compartment opening through the connecting rod.

11. The cutting blade structure according to claim 10, characterized in that, The cutting blade component is provided with a hinge protrusion, the connecting rod is hinged to the hinge protrusion, and the elastic component is disposed between the hinge protrusion and the wall of the blade chamber.

12. The cutting blade structure according to claim 5, characterized in that, The conversion component includes: A guide member is movably inserted through the second compartment opening. The guide member is provided with a guide rail, and the cutter component is provided with a guide portion. The guide portion slides in cooperation with the guide rail. The driving component drives the guide member to slide along the guide rail, thereby driving the cutter component to protrude from the first compartment opening.

13. The cutting blade structure according to claim 12, characterized in that, The elastic component is elastically assembled with the cutter component via the guide member, and is used to drive the guide portion to slide along the guide rail, thereby driving the cutter component to retract into the blade chamber.

14. The cutting blade structure according to claim 1, characterized in that, The cutting blade structure includes: A pusher wedge seat, wherein the assembly base is fixedly assembled with the pusher wedge seat.

15. A staple cartridge assembly, characterized in that, The staple cartridge component includes: Device body; The cutting blade structure as described in any one of claims 1-14 is mounted on the device body; A control structure is mounted on the device body and is drivenly connected to the cutting blade structure.

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