Nail outlet structure and stitching instrument

Abstract

The nail outlet structure comprises a cabin body, a nail pushing assembly arranged in the cabin body, an extrusion plate arranged on one side of the nail pushing assembly and an operation handle used for actuating the extrusion plate, the nail pushing assembly is provided with a nail pushing channel in the actuating direction of the nail pushing assembly, and suturing nails are arranged in the nail pushing channel. An extrusion channel is arranged in the advancing direction of the extrusion plate, and the extrusion channel and the nail pushing channel intersect and define an extrusion area; the nail pushing assembly comprises a forming plate arranged in the extrusion area and a supporting plate arranged between the forming plate and the extrusion plate in a sliding mode, an extrusion stroke is arranged between the extrusion plate and the forming plate, the extrusion plate is provided with an extrusion end used for extruding the suturing nail, and the stress edge of the suturing nail deforms under the action of the extrusion end and forms a bent edge; and in the extrusion stroke, the supporting plate is provided with an initial position which is supported on the stress side and corresponds to the inner side of the bent side, so that the suturing nail is triggered in an expected posture and a nail outlet direction.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a nail ejection structure and a suture device. Background Technology

[0002] Currently, medical manual suture devices are widely used in surgical procedures, including general surgery, orthopedics, and obstetrics and gynecology. Their market demand continues to grow, benefiting from both the increasing demand for surgical procedures and the widespread adoption of medical technology, as well as patients' rising expectations for surgical outcomes and suture quality.

[0003] A medical suture device in the prior art uses a manually actuated handle to push out internal suture staples via the handle and its pusher. The suture staple output path also includes a shaping mechanism to compress the staples into a desired shape. However, in actual use, the suture staple row is fed forward by a pusher plate, while a pusher on the other side performs a squeezing action under the operation of the handle, compressing the end of the suture staple into shape. However, during the squeezing action of the pusher, the currently squeezed suture staple loses the support of the rear suture row, making it prone to skewness or deformation outside the expected range during the squeezing process, affecting the suture quality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a nail-out structure.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A nail-out structure, comprising:

[0007] The device includes a cabin, a pusher assembly disposed within the cabin, an extrusion plate disposed on one side of the pusher assembly, and an operating handle for actuating the extrusion plate. The pusher assembly has a pusher channel along its actuation direction, and a suture pin is arranged in the pusher channel. An extrusion channel is provided along the traveling direction of the extrusion plate. The extrusion channel intersects with the pusher channel and defines an extrusion area.

[0008] The push pin assembly includes a forming plate placed in the extrusion area and a support plate slidably disposed between the forming plate and the extrusion plate. There is an extrusion stroke between the extrusion plate and the forming plate. The extrusion plate is provided with an extrusion end for extruding the suture pin. The force-bearing edge of the suture pin is deformed and forms a bent edge under the action of the extrusion end. During the extrusion stroke, the support plate has an initial position supported on the inner side of the force-bearing edge corresponding to the bent edge.

[0009] Further, the pusher assembly further comprises a spring, which exerts a force on the support plate to slide to the receiving position in the extrusion stroke, and the support plate is supported on the back of the force-receiving edge and / or the bending edge in the receiving position; the operating handle is in an initial state without force, and the operating handle is stopped at the pusher assembly and keeps the support plate in the initial position.

[0010] Further, the support plate defines a receiving stroke between the initial position and the receiving position in the extrusion stroke, and the support plate abuts against the staple in the receiving stroke.

[0011] Further, the staple is located at the initial end of the extrusion stroke, the forming plate is located at the terminal end of the extrusion stroke, the support plate is located between the force-receiving edge of the forming plate and the staple in the extrusion direction, and the support plate is located between the bending edge of the forming plate and the staple in the bending direction, which is perpendicular to the extrusion direction.

[0012] Further, the pusher assembly comprises a guide seat slidingly arranged in the cabin, a pusher plate slidingly arranged in the guide seat, one end of the pusher plate abutting against the guide seat through a spring, the other end of the pusher plate abutting against the staple, the support plate is arranged in the guide seat, and the operating handle is in an initial state without force, the guide seat abuts against the operating handle, and the operating handle releases the guide seat in the actuation stroke to drive the support plate to slide from the initial position to the receiving position through the spring.

[0013] Further, the cabin is provided with a first limiting space and a second limiting space, the guide seat is constrained to slide in the first limiting space in the actuation stroke, and the support plate is constrained to slide in the second limiting space in the actuation stroke.

[0014] Further, the forming plate and the end of the cabin define a support channel for the support plate to slide, the extrusion channel and the support channel are obliquely intersected at the pusher channel, the support channel is located below the pusher channel, and the extrusion channel is located above the pusher channel.

[0015] Further, the end of the guide seat is provided with a sliding groove, and the support plate is provided with an inclined pulling part, which is arranged in the sliding groove.

[0016] Further, the force-receiving edge comprises a main body part and bending parts located on both sides of the main body part, and the bending parts are provided with hook parts.

[0017] The extrusion end is arranged opposite to the bending parts, the extrusion plate and the forming plate are provided with a first shaping surface arranged opposite to the main body part, and a second shaping surface arranged opposite to the bending edge.

[0018] This utility model also provides a suture device with the above-mentioned staple ejection structure, including a fixed upper handle, a frame assembly disposed within the upper handle, and an operating handle rotatably disposed relative to the upper handle. The chamber is fixed to the frame assembly. The operating handle has a driving end that drives the extrusion block to move during the actuation stroke. The staple pusher assembly has a transmission end that extends out of the chamber. In the initial state, the operating handle presses the transmission end against and retracts it into the chamber, while keeping the support plate in the initial position. The staple pusher assembly is released with the actuation operation of the operating handle, and the spring drives the guide seat to slide and drive the support plate to the retracted position.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects: In the present invention, by setting a support block, which extends out of the extrusion area under normal conditions, when the extrusion block performs the extrusion action, the support block is first located between the extrusion end and the forming plate, and supports the inner side of the force-bending edge of the stitch during the extrusion stroke, thereby providing support for the expected shape during the extrusion molding process and preventing the stitch from deforming in the middle stroke. As the extrusion action proceeds, the extrusion block pushes the stitch toward the forming plate and prepares to bend the force-bending edge. At the same time, the support plate slides to the retracted position during the extrusion stroke and supports the back of the current stitch, thereby providing reliable support during the bending extrusion process, effectively preventing the stitch from tilting, and allowing the stitch to be fired in the expected posture and direction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention in its initial state;

[0021] Figure 2 This is a schematic diagram of the interior of the present invention in its initial state;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the overall structure of the present invention after the suture staple has deformed;

[0024] Figure 5 This is a schematic diagram of the interior of the present invention after the suture staple has deformed;

[0025] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0026] Figure 7 This is a partial structural diagram of the suture staple of this utility model after deformation;

[0027] Figure 8 This is a schematic diagram showing the positions of the extrusion plate and the support plate when the suture staple of this utility model deforms.

[0028] Figure 9 This is a schematic diagram showing the position of the support plate during its retraction stroke in this utility model.

[0029] Figure 10 This is a schematic diagram of the extrusion plate and support plate of the present invention when the suture staple deforms;

[0030] Figure 11 This is a schematic diagram showing another position of the extrusion plate and support plate when the suture staple of this utility model is deformed;

[0031] Figure 12 This is a schematic diagram of the push pin assembly of this utility model;

[0032] In the diagram: 1. Cabin; 1.1. First confinement space; 1.2. Second confinement space;

[0033] 2. Nail pusher assembly; 2.1 Nail pusher channel; 2.2 Forming plate; 2.21 Forming end; 2.3 Support plate; 2.31 Diagonal pull section; 2.4 Spring; 2.5 Guide seat; 2.51 Slide groove; 2.6 Nail pusher plate; 2.7 Transmission end;

[0034] 3. Extrusion plate; 3.1. Extrusion channel; 3.2. Extrusion end;

[0035] 4. Operating handle; 4.1. Drive end; 4.2. Limit end;

[0036] 5. Seam staples; 5.1. Bending edge; 5.2. Force-bearing edge; 5.21. Part to be bent; 5.22. Main body;

[0037] 6. Extrusion area; 7. Support channel; 8. First shaping surface; 9. Second shaping surface;

[0038] 10. Upper handle; 11. Frame assembly; Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0041] like Figures 1-12 As shown, a nail-out structure includes:

[0042] The device includes a fixedly installed cabin 1, a pusher assembly 2 installed inside the cabin 1, a pusher channel 2.1 along its actuation direction, a suture nail 5 arranged in the pusher channel 2.1, and the pusher assembly 2 is used to provide driving force to the suture nail 5 in the pusher channel 2.1 after the suturing operation is completed, thereby knocking out the suture nail 5.

[0043] A pressing plate 3 is provided on one side of the pusher assembly 2. The pressing plate 3 is connected to an operating handle 4 for actuating the pressing plate 3. The pressing plate 3 is used to transmit actuating force during the suturing operation and to apply bending deformation force to the current suture staple 5. A pressing channel 3.1 is provided along the traveling direction of the pressing plate 3. The pressing channel 3.1 is specifically located above the pusher channel 2.1. The pressing channel 3.1 intersects with the pusher channel 2.1 and defines the pressing area 6.

[0044] The push-nail assembly 2 includes a forming plate 2.2 inserted into the extrusion area 6, and a support plate 2.3 slidably disposed between the forming plate 2.2 and the extrusion plate 3. The forming plate 2.2 is fixedly disposed below the push-nail channel 2.1 and is disposed opposite to the extrusion plate 3, so that the suture nail 5 is located between the extrusion plate 3 and the forming plate 2.2. There is an extrusion stroke between the extrusion plate 3 and the forming plate 2.2. The extrusion plate 3 is provided with an extrusion end 3.2 for extruding the suture nail 5. After reaching the forming plate 2.2, the extrusion end 3.2 continues to travel and defines a bending stroke. Within the bending stroke, the force-bearing edge 5.2 of the suture nail 5 is deformed under the action of the extrusion end 3.2 and bends on the forming plate 2.2 to form a bent edge 5.1.

[0045] like Figures 1 to 3 As shown, when no suture actuation force is applied to the operating handle 4, the support plate 2.3 is initially in the initial position. In the initial position, the operating handle 4, which can be manually actuated, is provided at the rear of the pusher assembly 2. The operating handle 4 presses against the pusher assembly 2 to hold the support plate 2.3 in the initial position. The operating handle 4 is used to rotate to receive the actuation operation of medical staff and drive the compression block to perform the compression action. When the operating handle 4 is actuated, it releases the pusher assembly 2.

[0046] like Figures 6 to 11 As shown, the support plate 2.3 supports the inner side of the force-bearing edge 5.2 corresponding to the bending edge 5.1 during the extrusion stroke. Since the force-bearing edge 5.2 is bent after reaching the forming plate 2.2, the support plate 2.3 plays a certain holding role during the extrusion stroke, so that the stitching nail 5 begins to bend in the expected posture.

[0047] It is worth mentioning that the support plate 2.3 also performs an inward sliding action during the suturing actuation action. This can be due to the actuating force of the compression plate 3, which causes it to slide inward. For example, a guide surface can be provided at the end of the support plate 2.3, or a power component can be provided in the pusher assembly 2, so that the support plate 2.3 gradually slides inward during the compression stroke of the compression plate 3. Finally, the support plate 2.3 slides into the inner side of the compression area 6 and is located on the back of the suture nail 5, thereby providing support for the back of the suture nail 5 during the bending stroke and preventing the suture nail 5 from deviating from the expected output direction under the action of the inclined compression plate 3, such as tilting towards the inside of the pusher channel 2.1.

[0048] like Figure 9 As shown, in some other embodiments, the inward sliding action of the support plate 2.3 is preferably performed with the support plate 2.3 abutting against the force-bearing edge 5.2, so that the stitching pin 5 provides a certain holding force when it is pushed and squeezed toward the forming plate 2.2.

[0049] As a further embodiment of the inward sliding of the support plate 2.3, the pusher assembly 2 also includes a spring 2.4, which serves as a power component and is configured to apply a force to the support plate 2.3 as it slides to the retracted position during the compression stroke. This force is released when the medical staff actuates the operating handle 4. In the retracted position, the support plate 2.3 is supported on the back of the force-bearing edge 5.2 and / or the bent edge 5.1.

[0050] When the operating handle 4 is in its initial unforced state, it stops against the push pin assembly 2 and prevents the spring 2.4 from releasing its force and causing the push pin assembly 2 to retract, thereby keeping the support plate 2.3 in its initial position.

[0051] like Figures 4 to 6 As shown, during the compression stroke, the operating handle 4 is actuated by the medical staff and rotates, releasing the pusher assembly 2. At this time, the spring 2.4 acts on the pusher assembly 2, causing the pusher assembly 2 to retract, so that the guide seat 2.5 drives the support plate 2.3 to slide to the receiving position. The support plate 2.3 defines the receiving stroke between the initial position and the receiving position, and the support plate 2.3 abuts against the suture staple 5 during the receiving stroke.

[0052] Specifically, when the extrusion plate 3 pushes the suture pin 5 toward the forming plate 2.2, the support plate 2.3 gradually slides into the inner side of the forming area from the initial position and maintains its posture of abutting against the output side of the suture pin 5. When the extrusion plate 3 pushes the suture pin 5 to the forming plate 2.2 and prepares to bend, the support plate 2.3 slides in and is located on the back of the force-bearing edge 5.2 of the suture pin 5, so as to provide reliable support for the suture pin 5 during the bending process and ensure the forming posture of the suture pin 5.

[0053] like Figure 3 andFigure 6 As shown, as a further embodiment of the pusher assembly 2, the pusher assembly 2 includes a guide seat 2.5 slidably disposed within the chamber 1, a pusher plate 2.6 slidably disposed within the guide seat 2.5, and a spring 2.4 abutting against one end of the pusher plate 2.6 and the guide seat 2.5. The other end of the pusher plate 2.6 presses against the suture staple 5 on the side facing the compression area 6. In the initial state, the spring 2.4 maintains a compressed posture and applies a force away from the compression area 6 to the guide seat 2.5. This force is released when the medical staff actuates the operating handle 4. The support plate 2.3 is inserted into the end of the guide seat 2.5 and slides along with the guide seat 2.5. During the actuation stroke, the guide seat 2.5 is actuated by the spring 2.4, causing the support plate 2.3 to slide from the initial position to the retracted position.

[0054] As an example, the compression and release of spring 2.4 can be achieved by the sliding of pusher assembly 2. In the initial unforced state, operating handle 4 abuts against guide seat 2.5 in the nail dispensing direction. At this time, spring 2.4 is compressed, and support plate 2.3 is located in the initial position extending out of compression area 6. When operating handle 4 is actuated to bend and dispensing nail, guide seat 2.5 loses the limit of operating handle 4, spring 2.4 is released and drives guide seat 2.5 away from the nail dispensing direction, so that subsequent suture nails 5 will not affect the bending action of the current suture nail 5. At this time, support plate 2.3 is driven and slides inward from the initial position to the retracted position. As operating handle 4 returns to its original position, it presses against guide seat 2.5 again. At this time, spring 2.4 is compressed again and outputs actuating force in the nail dispensing direction. Support plate 2.3 slides back from the retracted position to the initial position and extends out. Under the action of pusher plate 2.6, the bent suture nail 5 is pushed out.

[0055] Specifically, the cabin 1 is provided with a first limiting space 1.1 and a second limiting space 1.2. The bottom of the front end of the guide seat 2.5 is provided with a sliding part that is placed in the first limiting space 1.1, so that the guide seat 2.5 is constrained to slide in the first limiting space 1.1 during the actuation stroke, and the support plate 2.3 is constrained to slide in the second limiting space 1.2 during the actuation stroke.

[0056] Specifically, a support channel 7 is defined between the forming plate 2.2 and the end of the cabin 1 for the support plate 2.3 to slide. The extrusion channel 3.1 and the support channel 7 intersect obliquely at the push pin channel 2.1. The support channel 7 is located below the push pin channel 2.1, and the extrusion channel 3.1 is located above the push pin channel 2.1.

[0057] Specifically, the guide seat 2.5 has a groove 2.51 at its end, and the support plate 2.3 has a diagonal pull part 2.31. The diagonal pull part 2.31 and the support plate 2.3 together form a "7"-shaped outline. The diagonal pull part 2.31 is installed inside the groove 2.51, and the support plate 2.3 is installed diagonally inside the support channel 7. The second limiting space 1.2 is defined between the support channel 7 and the groove 2.51, thereby limiting the support plate 2.3.

[0058] Through the above improvements, the pusher assembly 2 and the support plate 2.3 can move stably and smoothly, reducing the positional displacement of the suture staple 5 when bending and exiting.

[0059] Specifically, the cabin 1 and the forming plate 2.2 together define the support surface. The support surface extends from the forming area toward the nail ejection direction and supports the nail ejection trajectory of the stitch 5. Through the above improvements, the support surface further limits the bent stitch 5 and stabilizes the nail ejection posture of the stitch 5.

[0060] Reference Figure 8 , Figure 10 and Figure 11 Specifically, the suture pin 5 is located at the initial end of the extrusion stroke, the forming plate 2.2 is located at the end of the extrusion stroke, the support plate 2.3 is located between the forming plate 2.2 and the force-bearing edge 5.2 of the suture pin 5 along the extrusion direction, and the support plate 2.3 is located between the forming plate 2.2 and the bending edge 5.1 of the suture pin 5 along the bending direction. The bending direction is perpendicular to the extrusion direction, so that the support plate 2.3 provides a support point for the suture pin 5 during the extrusion stroke and supports the back of the suture pin 5 during the extrusion bending process, thereby ensuring that the suture pin 5 is bent and formed in the expected posture.

[0061] Specifically, the force-bearing edge 5.2 includes a main body 5.22 and bending portions 5.21 located on both sides of the main body 5.22, with hook portions provided on the bending portions 5.21;

[0062] The extrusion end 3.2 is positioned directly opposite the portion 5.21 to be bent. The extrusion plate 3 and the forming plate 2.2 are respectively provided with a first shaping surface 8 corresponding to the main body portion 5.22 and a second shaping surface 9 corresponding to the bending edge 5.1. After the extrusion plate 3 is actuated into place, the main body portion 5.22 of the sewing nail 5 is abutted between the first shaping surfaces 8, and the bending edge 5.1 of the sewing nail 5 after bending is abutted between the second shaping surfaces 9 on the opposite sides of the extrusion end 3.2 and the forming plate 2.2. Under the premise of the back support of the support plate 2.3, the bending forming quality of the sewing nail 5 is further guaranteed.

[0063] The number of extrusion ends 3.2 is two, the forming plate 2.2 has a forming end 2.21 located between the two extrusion ends 3.2, and the support plate 2.3 has two support ends located between the forming end 2.21 and the extrusion end 3.2.

[0064] This utility model also provides a suture device with the above-mentioned staple ejection structure, including a fixed upper handle 10, a frame assembly 11 disposed within the upper handle 10, and an operating handle 4 rotatably disposed relative to the upper handle 10. The chamber 1 is fixed on the frame assembly 11. The operating handle 4 has a driving end 4.1 that drives the extrusion block to move during the actuation stroke, and the extrusion plate 3 moves within the extrusion channel 3.1 by rotating the operating handle 4. The operating handle 4 is provided with a limiting end 4.2. The staple pusher assembly 2 has a transmission end 2.7 extending out of the chamber 1. The transmission end 2.7 is specifically disposed at the rear end of the guide seat 2.5. In the initial state without force, the limiting end 4.2 presses the transmission end 2.7 against and retracts it into the chamber 1, and keeps the support plate 2.3 in the initial position. At this time, the spring 2.4 is compressed, the rear end of the guide seat 2.5 is fixed under the action of the spring 2.4, and the staple pusher plate 2.6 pushes the current suture staple 5 to the extrusion area 6 under the action of the spring 2.4.

[0065] As medical staff press the operating handle 4, actuating the compression plate 3 to move within the compression channel 3.1:

[0066] At this time, the extrusion plate 3 pushes the force-bearing edge 5.2 of the current sewing nail 5 toward the forming plate 2.2, that is, it performs the extrusion stroke;

[0067] At this time, the transmission end 2.7 of the pusher assembly 2 loses its limit, and the guide seat 2.5 moves away from the compression area 6 under the reaction force of the spring 2.4, so as to avoid the influence of the subsequent suture nail 5 on the bending action of the current suture nail 5. At the same time, the support plate 2.3 slides from the initial position toward the retracted position in the posture of abutting against the inside of the force-bearing edge 5.2 of the suture nail 5.

[0068] Subsequently, the extrusion plate 3 abuts the force-bearing edge 5.2 of the stitch 5 against the forming plate 2.2 and prepares to perform the bending stroke. At the same time, the support plate 2.3 is in the retracted position and supports the back of the stitch 5. In this state, the operating handle 4 further actuates the extrusion plate 3, and the extrusion end 3.2 passes over the forming plate 2.2 and bends the stitch 5. At this time, the bending edge 5.1 of the force-bearing edge 5.2 is deformed between the extrusion end 3.2 and the opposite side of the forming plate 2.2, and finally the bent edge 5.1 is formed.

[0069] As the medical staff releases the operating handle, it returns to its original position:

[0070] The limiting end 4.2 abuts against the transmission end 2.7 again, and squeezes the guide seat 2.5 into the compartment 1. The spring 2.4 is compressed again and applies a force to the stitch 5 in the direction of the compression area 6 through the pusher plate 2.6. At the same time, the support plate 2.3 is driven by the guide seat 2.5, so that the support plate 2.3 slides from the retracted position to the initial position, that is, the support plate 2.3 extends out into the compression area 6 again. Under the combined action of the support plate 2.3 and the pusher plate 2.6, the bent stitch 5 is knocked out, and the subsequent stitch 5 is pushed into the compression area 6.

[0071] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A nail-out structure, characterized in that, include: The device includes a cabin (1), a pusher assembly (2) disposed within the cabin (1), an extrusion plate (3) disposed on one side of the pusher assembly (2), and an operating handle (4) for actuating the extrusion plate (3). The pusher assembly (2) is provided with a pusher channel (2.1) along its actuation direction. A suture pin (5) is arranged in the pusher channel (2.1). An extrusion channel (3.1) is provided along the traveling direction of the extrusion plate (3). The extrusion channel (3.1) intersects with the pusher channel (2.1) and defines an extrusion area (6). The push pin assembly (2) includes a forming plate (2.2) placed in the extrusion area (6) and a support plate (2.3) slidably disposed between the forming plate (2.2) and the extrusion plate (3). There is an extrusion stroke between the extrusion plate (3) and the forming plate (2.2). The extrusion plate (3) is provided with an extrusion end (3.2) for extruding the stitch pin (5). The force-bearing edge (5.2) of the stitch pin (5) is deformed under the action of the extrusion end (3.2) and forms a bent edge (5.1). During the extrusion stroke, the support plate (2.3) has an initial position supported on the inner side of the force-bearing edge (5.2) corresponding to the bent edge (5.1).

2. The nail-out structure according to claim 1, characterized in that: The pusher assembly (2) further includes a spring (2.4), which applies a force to the support plate (2.3) during the pressing stroke to slide to the retracted position. The support plate (2.3) is supported on the back of the force-bearing edge (5.2) and / or the bent edge (5.1) in the retracted position. In the initial unforced state, the operating handle (4) stops against the pusher assembly (2) and keeps the support plate (2.3) in the initial position.

3. The nail-out structure according to claim 2, characterized in that: The support plate (2.3) defines the receiving stroke between the initial position and the receiving position during the extrusion stroke, and the support plate (2.3) abuts against the suture staple (5) during the receiving stroke.

4. The nail-out structure according to claim 1, characterized in that: The stitching pin (5) is located at the initial end of the extrusion stroke, the forming plate (2.2) is located at the end of the extrusion stroke, the support plate (2.3) is located between the forming plate (2.2) and the force-bearing edge (5.2) of the stitching pin (5) along the extrusion direction, and the support plate (2.3) is located between the forming plate (2.2) and the edge (5.1) of the stitching pin (5) to be bent along the bending direction, wherein the bending direction is perpendicular to the extrusion direction.

5. The nail-out structure according to claim 1, characterized in that: The pusher assembly (2) includes a guide seat (2.5) slidably disposed within the cabin (1), and a pusher plate (2.6) slidably disposed within the guide seat (2.5). One end of the pusher plate (2.6) abuts against the guide seat (2.5) via a spring (2.4), and the other end of the pusher plate (2.6) abuts against a suture nail (5). The support plate (2.3) is disposed on the guide seat (2.5). In the initial unforced state, the guide seat (2.5) abuts against the operating handle (4), and the operating handle (4) releases the guide seat (2.5) during the actuation stroke, so that the guide seat (2.5) is actuated by the spring (2.4) and drives the support plate (2.3) to slide from the initial position to the retracted position.

6. The nail-out structure according to claim 5, characterized in that: The cabin (1) is provided with a first limiting space (1.1) and a second limiting space (1.2). The guide seat (2.5) is constrained to slide within the first limiting space (1.1) during the actuation stroke, and the support plate (2.3) is constrained to slide within the second limiting space (1.2) during the actuation stroke.

7. The nail-out structure according to claim 1, characterized in that: A support channel (7) for sliding of the support plate (2.3) is defined between the forming plate (2.2) and the end of the cabin (1). The extrusion channel (3.1) and the support channel (7) intersect obliquely at the push pin channel (2.1). The support channel (7) is located below the push pin channel (2.1), and the extrusion channel (3.1) is located above the push pin channel (2.1).

8. The nail-out structure according to claim 5, characterized in that: The guide seat (2.5) has a sliding groove (2.51) at its end, and the support plate (2.3) has a diagonal pull part (2.31) which is installed inside the sliding groove (2.51).

9. The nail-out structure according to claim 1, characterized in that: The force-bearing edge (5.2) includes a main body (5.22) and bending portions (5.21) located on both sides of the main body (5.22), wherein the bending portions (5.21) are provided with hook portions; The extrusion end (3.2) is positioned directly opposite the portion to be bent (5.21). The extrusion plate (3) and the forming plate (2.2) are provided with a first shaping surface (8) opposite to the main body portion (5.22) and a second shaping surface (9) opposite to the bending edge (5.1).

10. A suture device having the staple ejection structure according to any one of claims 2 to 9, characterized in that, The device includes a fixed upper handle (10), a frame assembly (11) disposed within the upper handle (10), and an operating handle (4) rotatably disposed relative to the upper handle (10). The chamber (1) is fixed to the frame assembly (11). The operating handle (4) has a drive end (4.1) that drives the extrusion block to move during the actuation stroke. The pusher assembly (2) has a transmission end (2.7) that extends out of the chamber (1). In the initial state, the operating handle (4) presses the transmission end (2.7) against and retracts it into the chamber (1) and keeps the support plate (2.3) in the initial position. The pusher assembly (2) is released with the actuation operation of the operating handle (4), and the spring (2.4) drives the guide seat (2.5) to slide and move the support plate (2.3) to the retracted position.

Images