Surgical operating instrument and suturing device thereof

Abstract

The embodiment of the invention provides a suture device of a surgical operating instrument and the surgical operating instrument. The stapling device includes a shaft assembly and an end stapling mechanism. The shaft assembly includes a proximal end and a distal end, is located at the distal end of the shaft assembly and includes a staple channel configured to receive a plurality of staples and a staple pusher sliding channel configured to receive a staple pusher. The suturing nails are arranged in the suturing nail channel in a stacked mode in the first direction, and the first direction is parallel to the axis of the shaft assembly. The nail pusher is arranged to be capable of sliding in the nail pusher sliding channel so as to push the suturing nails out of the suturing nail channel in the second direction, wherein the second direction is perpendicular to the first direction. According to the suturing device, the number of suturing nails can be increased, and an operator can conveniently observe the suturing condition.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to a suturing device for a surgical instrument and the surgical instrument. Background Art

[0002] Surgical instruments used for hernia repair utilize staples to penetrate the patch and tissue to achieve repair and suturing. During the suturing process, the operator controls the staples to penetrate the patch and tissue. The staples are then bent into a predetermined shape by the contralateral anvil, achieving a seamless suture between the patch and tissue. Summary of the Invention

[0003] The embodiments of the present disclosure provide a suturing device for a surgical instrument and the surgical instrument thereof, which can not only increase the number of suture staples that can be accommodated in a suture staple channel, but also enable the suture staples to be ejected from the bottom of the surgical instrument, which is beneficial for the operator to observe the suturing situation.

[0004] According to a first aspect of the present disclosure, a suturing device for a surgical instrument is provided, the suturing device comprising a shaft assembly and an end suturing mechanism. The shaft assembly comprises a proximal end and a distal end, the distal end of the shaft assembly comprising a suturing staple channel configured to accommodate a plurality of suturing staples and a suturing staple pusher sliding channel configured to accommodate a suturing staple pusher. The plurality of suturing staples are stacked in the suturing staple channel along a first direction, the first direction being parallel to the axis of the shaft assembly. The suturing staple pusher is configured to slide in the suturing staple pusher sliding channel to push the suturing staples out of the suturing staple channel along a second direction, wherein the second direction is perpendicular to the first direction.

[0005] In at least some embodiments, the staple pusher includes a staple pusher configured to push the staple in the staple pusher sliding channel along the second direction to push the staple out of the staple channel along the second direction.

[0006] In at least some embodiments, the staple pusher comprises a finger-shaped staple pusher, which comprises a staple pusher body and a pair of first protrusions, wherein the first protrusions are configured to push the staples.

[0007] In at least some embodiments, the finger-shaped nail pushing piece further includes a second protrusion arranged in a pair, and the nail pushing piece body includes a first side and a second side opposite to each other in the second direction, the first protrusion is arranged on the first side close to the suture nail, and the second protrusion is arranged on the second side away from the suture nail, and the second protrusion is arranged to keep the first protrusion moving in the second direction.

[0008] In at least some embodiments, a dimension of the second protrusion in the second direction is greater than or equal to a dimension of the first protrusion in the second direction.

[0009] In at least some embodiments, the suturing device further comprises a driving mechanism configured to drive the staple pusher; the staple pusher further comprises a flexible connecting member connected between the driving mechanism and the staple pusher, and the driving mechanism is configured to drive the staple pusher to move via the flexible connecting member.

[0010] In at least some embodiments, the driving mechanism includes a driving member located in the shaft assembly, and the driving member, the nail pushing member and the flexible connecting member are configured so that when the driving member moves distally, the driving member pushes the nail pushing member through the flexible connecting member to push the suture staple out of the suture staple channel; when the driving member continues to move distally, the driving member continues to push the nail pushing member through the flexible connecting member to bend the suture staple.

[0011] In at least some embodiments, the flexible connector includes a single-layer or multi-layer ribbon-shaped connecting piece.

[0012] In at least some embodiments, the strip-shaped connecting piece includes a plurality of connecting portions, wherein the plurality of connecting portions include a first connecting portion connected to the nail-pushing member, and the first connecting portion has an arc shape.

[0013] In at least some embodiments, the arc shape has a radius of 1 to 5 mm.

[0014] In at least some embodiments, the plurality of connection portions further include a second connection portion connected to the driving mechanism, and an extending direction of the second connection portion is parallel to the first direction.

[0015] In at least some embodiments, the plurality of connection parts further include a third connection part connected between the first connection part and the second connection part, and an extension direction of the third connection part is inclined relative to the first direction to form a slope between the first connection part and the second connection part.

[0016] In at least some embodiments, the third connecting portion includes a proximal connecting segment and a distal connecting segment, the proximal connecting segment is connected to the second connecting portion, and the distal connecting segment is connected to the first connecting portion; the angle between the distal connecting segment and the first direction is smaller than the angle between the proximal connecting segment and the first direction.

[0017] In at least some embodiments, the sum of the lengths of the first connecting portion and the distal connecting segment in the extension direction of the distal connecting segment is a, the length of the proximal connecting segment in its extension direction is b, and the length of the second connecting portion in its extension direction is c, then a>b>c.

[0018] In at least some embodiments, the strip-shaped connecting piece is a metal piece.

[0019] In at least some embodiments, the dimension of the strip connecting piece in the third direction is 4 to 6 mm, and the third direction is perpendicular to the first and second directions; the total length of the strip connecting piece in its extension direction is 43.2 to 60.2 mm; and the total thickness of the strip connecting piece is 0.1 to 0.5 mm.

[0020] In at least some embodiments, the suturing device includes an end housing, the end suturing mechanism is located in the end housing, the end housing has a top and a bottom arranged opposite to each other in the second direction, the suturing staple channel is located between the top and the bottom, and the staple pusher sliding channel is located between the suturing staple channel and the top.

[0021] In at least some embodiments, the end stapling mechanism further includes a spacer disposed between the staple channel and the staple pusher sliding channel, wherein the spacer is configured to separate the staple channel from the staple pusher sliding channel.

[0022] In at least some embodiments, the size of the staple pusher in the first direction is larger than the size of the staple pusher sliding channel in the first direction, and the size of the staple pusher sliding channel in the first direction is larger than the size of the suture staple channel in the first direction.

[0023] According to a second aspect of the present disclosure, a surgical instrument is further provided, comprising the suturing device described in any one of the foregoing embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0025] Figure 1 Schematic diagram of the structure of the surgical instrument according to the embodiment of the present invention.

[0026] Figure 2 It is a partial exploded view of a surgical instrument according to an embodiment of the present disclosure.

[0027] Figure 3 A partial cross-sectional view of a surgical instrument according to an embodiment of the present disclosure.

[0028] Figure 4 Schematic diagram of the structure of the nail pusher of the surgical instrument according to the embodiment of the present disclosure.

[0029] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure.

[0030] Figure 6AIt is a top view of the nail pushing member and the flexible connecting member according to an embodiment of the present disclosure.

[0031] Figure 6B For the Figure 6A Schematic diagram of the cross section along line AA.

[0032] Figure 7A and Figure 7B Schematic diagrams of the whole and partial cross-sections of the surgical instrument in the initial state according to the embodiment of the present disclosure are shown respectively.

[0033] Figure 8A and Figure 8B They are overall and partial cross-sectional schematic diagrams of the surgical instrument in the nail-pushing state according to an embodiment of the present disclosure, respectively.

[0034] Figure 9A and Figure 9B 1 and 2 are overall and partial cross-sectional schematic diagrams of the surgical instrument according to an embodiment of the present disclosure in a suturing completed state, respectively. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0036] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and similar terms mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] In the embodiment of the present disclosure, terms such as “distal”, “distal end”, and “distal direction” refer to the side away from the operator, and terms such as “proximal”, “proximal end”, and “proximal direction” refer to the side close to the operator.

[0038] In conventional surgical instruments, the staples in the staple channel are arranged horizontally or obliquely, resulting in a relatively small number of staples, which cannot meet the needs of the operator.

[0039] An embodiment of the present disclosure provides a suturing device for a surgical instrument. The suturing device includes a shaft assembly and an end suturing mechanism. The shaft assembly includes a proximal end and a distal end, the distal end of the shaft assembly including a suturing channel configured to accommodate a plurality of suturing staples and a slidable suturing channel configured to accommodate a staple pusher. The plurality of suturing staples are stacked and arranged in the suturing channel along a first direction, the first direction being parallel to the axis of the shaft assembly. The staple pusher is configured to slide in the suturing channel to push the suturing staples out of the suturing channel along a second direction, wherein the second direction is perpendicular to the first direction.

[0040] An embodiment of the present disclosure also provides a surgical instrument comprising the above-mentioned suturing device.

[0041] In the surgical instrument suturing device and the surgical instrument provided in the above-described embodiment, a plurality of suture staples are stacked and arranged in a first direction parallel to the axis within the suture staple channel, and a staple pusher pushes the suture staples out of the suture staple channel in a second direction perpendicular to the axis. This arrangement not only increases the number of suture staples that can be accommodated in the suture staple channel (e.g., approximately 30), but also allows the suture staples to be ejected from the bottom of the surgical instrument, facilitating observation of the suture process by the operator.

[0042] The present disclosure is described below by way of specific embodiments. To keep the following description of the embodiments of the present disclosure clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present disclosure appears in more than one drawing, the component may be represented by the same reference numeral in each drawing.

[0043] Figure 1 Schematic diagram of the structure of the surgical instrument according to the embodiment of the present invention. Figure 2 It is a partial exploded view of a surgical instrument according to an embodiment of the present disclosure. Figure 3 A partial cross-sectional view of a surgical instrument according to an embodiment of the present disclosure. Figure 4 Schematic diagram of the structure of the nail pusher of the surgical instrument according to the embodiment of the present disclosure.

[0044] For example, Figures 1 to 4 As shown, an embodiment of the present disclosure provides a surgical instrument 100, which includes a suturing device 10 and an actuating device 40. The suturing device 10 includes an end housing 20, an end suturing mechanism 11 located in the end housing 20, and a shaft assembly 12.

[0045] For example, the shaft assembly 12 includes a proximal end 12A and a distal end 12B that are opposite to each other in the axial direction Z. The end suturing mechanism 11 is located at the distal end 12B of the shaft assembly 12 and is operably connected to the distal end 12B of the shaft assembly 12. The actuating device 40 is located at the proximal end 12A of the shaft assembly 12 and is operably connected to the proximal end 12A of the shaft assembly 12. The actuating device 40 includes a wrench 41 that can be rotated clockwise or counterclockwise to control the driving mechanism 14 to advance or retract in the axial direction Z, thereby achieving operations such as pushing and bending the suture staples.

[0046] For example, the end housing 20 includes a top housing 201 and a bottom housing 202, with the end suturing mechanism 11 located between the top housing 201 and the bottom housing 202. The top housing 201 has a top portion 201P, and the bottom housing 202 has a bottom portion 202P, with the top portion 201P and the bottom portion 202P being disposed opposite each other. The end suturing mechanism 11 includes a staple channel 22 for accommodating a plurality of staples 26. The staple channel 22 is located between the top portion 201P and the bottom portion 202P and extends along a first direction D1. The plurality of staples 26 are stacked and arranged in the staple channel 22 along the first direction D1. The first direction D1 is parallel to the axial direction Z.

[0047] For example, the suture legs of each suture staple 26 are closely arranged in a vertical position within the suture staple channel 22, with the legs of two adjacent suture staples 26 contacting each other. The plurality of suture staples 26 are stacked along a first direction D1, i.e., the stacking direction is parallel to the first direction D1. Thus, when observing the suture staples within the suture staple channel 22 from the perspective of the first direction D1, only the leg of the first suture staple 26 is visible.

[0048] In the related art, the suture staples 26 are arranged in a lying position or tilted relative to the first direction D1 (ie, the staple bodies are in a horizontal or tilted position). In this arrangement, the number of suture staples that can be accommodated in the suture staple channel 22 is relatively small, for example, only a few or a dozen.

[0049] In the disclosed embodiment, since each suture staple is stacked along the first direction D1 in a manner similar to staples, the length of each suture staple in the suture staple channel 22 can be reduced, thereby increasing the number of suture staples that can be accommodated in the suture staple channel 22. Due to the increased number of suture staples that can be accommodated, the frequency of intraoperative surgical instrument replacement can also be reduced, shortening surgical time and reducing surgical costs. Furthermore, for example, the end housing 20 is made of a transparent material, which facilitates the operator to understand the remaining number of suture staples in the suture staple channel.

[0050] For example, the end suturing mechanism 11 further includes a staple pusher sliding channel 24 that accommodates a staple pusher 30. The staple pusher sliding channel 24 is located between the staple channel 22 and the top portion 201P, that is, above the staple channel 22. The staple pusher 30 is also located between the staple channel 22 and the top portion 201P. The direction in which the staple pusher sliding channel 24 extends is not parallel to the direction in which the staple channel 22 slides. The staple pusher 30 is configured to slide within the staple pusher sliding channel 24. This facilitates the staple pusher 30 in pushing the staples 26 out of the staple channel 22 in a direction different from the first direction D1. For example, the staple pusher 30 is configured to slide within the staple pusher sliding channel 24 to push the staples out of the staple channel 22 in a second direction D2, which is perpendicular to the first direction D1.

[0051] In the related art, the suture staple 26 extends from the distal end surface of the end housing 20, that is, the staple is ejected in the first direction D1. This method of ejection is not conducive to the operation of the suturing device in deeper tissue layers because the operator cannot see the distal end surface. In contrast, in the embodiment of the present disclosure, the suture staple is ejected in the second direction, that is, it is ejected in the second direction perpendicular to the axial direction Z, which is easier for the operator to observe, thereby facilitating the control of the suturing effect of the suture staple.

[0052] Figure 5 for Figure 4 A schematic diagram of a partially enlarged structure. For example, Figure 4 and Figure 5 As shown, the staple pusher 30 includes a staple pusher, which includes, for example, a finger-shaped staple pusher 31. The finger-shaped staple pusher 31 is configured to push the staples 26 in the staple pusher sliding channel 24 along the second direction D2 to push the staples 26 out of the staple channel 22 along the second direction D2.

[0053] For example, the finger-shaped staple pusher 31 includes a staple pusher body 310 and a pair of first protrusions 311, wherein the first protrusions 311 are configured to push the staples 26. For example, when the staple pusher body 310 pushes the staples 26, the two first protrusions 311 respectively contact and abut against the two shoulders of the staples 26, thereby facilitating the entire staple 26 to be pushed out of the staple channel 22.

[0054] For example, the finger-shaped nail-pushing piece 31 further includes a pair of second protrusions 312, and the nail-pushing piece body 310 includes first sides (eg, Figure 5 shown upper side) and a second side (e.g. Figure 5 In the second direction D2, the first side is the side close to the suture staple 26, and the second side is the side away from the suture staple 26. The first protrusion 311 is provided on the first side, and the second protrusion 312 is provided on the second side. The second protrusion 312 is provided to maintain the movement of the first protrusion 311 in the second direction D2.

[0055] As will be described below, the finger-shaped nail-pushing piece 31 is connected to a strip-shaped connecting piece 32 (described later), which is driven by a drive rod 36. When the drive rod 36 moves distally, the nail-pushing piece body 310 moves downward. Without the second protrusion 312, the nail-pushing piece body 310 might flip downward under the pushing force of the strip-shaped connecting piece 32, preventing smooth nail pushing. The second protrusion 312 guides the movement of the nail-pushing piece body 310, ensuring smooth nail pushing.

[0056] For example, the dimension C12 of the second protrusion 312 in the second direction D2 is greater than or equal to the dimension C11 of the first protrusion 311 in the second direction D2. This further ensures that the second protrusion 312 guides the nail-pushing plate body 310. For example, a gap is provided between the second protrusion 312 and the finger-shaped nail-pushing plate 31, that is, a gap is provided between the two in the third direction D3. This prevents friction between the second protrusion 312 and the strip-shaped connecting piece 32 during movement of the finger-shaped nail-pushing plate 31, which could hinder nail pushing along the second direction D2.

[0057] return Figure 2 For example, the suturing device 10 further includes a drive mechanism 14 configured to drive a staple pusher 30. The staple pusher 30 further includes a flexible connector connected between the drive mechanism 14 and the staple pusher. The drive mechanism 14 is configured to drive the staple pusher to move via the flexible connector. The provision of the flexible connector facilitates the driving mechanism 14 to drive the staple pusher. Furthermore, because the connector is configured to be flexible, it can bend and deform along the direction of the staple pusher sliding channel 24, thereby pushing the staple pusher.

[0058] As previously described, the nail pusher sliding channel 24 is a non-linear or flat channel. If a rigid connector is used, it will not be easily bent, and the driving effect on the nail pusher will not be achieved. In the disclosed embodiment, a flexible connector is provided between the nail pusher and the drive mechanism to ensure that the drive mechanism can drive the nail pusher. In addition, the flexible connector can convert the axial motion of the drive mechanism along the first direction D1 into radial motion along the second direction D2, which facilitates nail pushing along the second direction D2.

[0059] For example, Figure 2 and Figure 4As shown, the drive mechanism 14 includes a drive member located in the shaft assembly 12, which is a drive rod 36. The flexible connector includes a ribbon-shaped connecting piece 32. The drive rod 36, the finger-shaped nail pusher 31, and the ribbon-shaped connecting piece 32 are configured such that when the drive rod 36 moves distally, the drive rod 36 pushes the finger-shaped nail pusher 31 via the ribbon-shaped connecting piece 32 to push the suture staple 26 out of the suture staple channel 22; when the drive rod 36 continues to move distally, the drive rod 36 continues to push the finger-shaped nail pusher 31 via the ribbon-shaped connecting piece 32 to bend the suture staple 26. After the suture staple 26 is bent, the drive rod 36 moves proximally to reset the finger-shaped nail pusher 31. It can be seen that the drive rod 36 of the disclosed embodiment can move distally or proximally in the first direction D1, and the forward or backward movement of the finger-shaped nail pusher 31 is controlled by the ribbon-shaped connecting piece 32.

[0060] For example, the flexible connector includes a single-layer or multi-layer ribbon-shaped connecting piece 32. Specifically, the ribbon-shaped connecting piece 32 can be a single layer or a stack of multiple layers. A single layer simplifies the manufacturing process; a multi-layered structure provides a certain degree of rigidity while maintaining flexibility, making it less susceptible to breakage.

[0061] For example, the strip-shaped connecting piece 32 is a metal sheet, and the metal sheet includes a steel sheet. In some embodiments, the flexible connecting piece includes a plurality of stacked steel sheets, and the total thickness of the plurality of steel sheets is 0.1-0.5 mm.

[0062] like Figure 4 For example, as shown, the strip-shaped connecting piece 32 includes multiple connecting portions, including a first connecting portion 321 that connects to a nail-pushing member (e.g., the finger-shaped nail-pushing piece 31). The first connecting portion 321 has an arcuate shape. By configuring the first connecting portion 321 with an arcuate shape, the direction of force transmission can be changed as needed, while increasing the downward thrust of the finger-shaped nail-pushing piece 31 to ensure effective nail removal. It also reduces the overall size of the end effector, facilitating a compact, compact, and flexible device. In the disclosed embodiments, "multiple" refers to two or more.

[0063] For example, the radius R of an arc shape (see Figure 6B ) is 1-5 mm. Further, for example, it can be 2-4 mm. Even further, for example, it can be 2.5-3.5 mm, thereby further ensuring nail removal efficiency. If it is greater than 5 mm, the arc radius R may exceed the radial dimension of the end shell. If it is less than 1 mm, the arc radius is too small, and the strip-shaped connecting piece 32 cannot push the finger-shaped nail pushing piece 31.

[0064] Furthermore, the vertical distance from the outer surface of the first connection portion 321 to the top 201P of the end shell 20 is the shortest, so that the first connection portion 321 can obtain the largest possible arc radius R while ensuring the structural integrity and strength of the top of the end shell 20.

[0065] For example, the plurality of connection portions further includes a second connection portion 322 connected to the drive rod 36. The second connection portion 322 extends parallel to the first direction D1. Since the second connection portion 322 is connected to the drive rod 36, the force applied by the drive rod 36 can be effectively transmitted to the other connection portions of the strip-shaped connecting piece 31 along the first direction D1.

[0066] For example, the plurality of connecting portions further includes a third connecting portion 323 connected between the first connecting portion 321 and the second connecting portion 322. The extending direction of the third connecting portion 323 is inclined relative to the first direction D1 to form a slope between the first connecting portion 321 and the second connecting portion 322. The provision of the third connecting portion 323 facilitates the staple pusher 31 to push the staples 26 out of the staple channel 22 in a direction different from the first direction D1 (e.g., the second direction D2).

[0067] In the disclosed embodiment, the inclination angle of the third connecting portion 323 can be uniform across the entire portion, or can be configured to have different inclination angles in sections. A uniform inclination angle can simplify the manufacturing process. A configuration with different inclination angles in sections of the third connecting portion 323 can further enhance the pushing force of the strip-shaped connecting piece 32 on the finger-shaped nail-pushing piece 31.

[0068] Figure 6A It is a top view of the nail pushing member and the flexible connecting member according to an embodiment of the present disclosure. Figure 6B For the Figure 6A Schematic diagram of the cross section of line AA. Figure 4 、 Figure 6A and Figure 6B As shown, for example, the third connecting portion 323 includes a proximal connecting segment 323A and a distal connecting segment 323B. The proximal connecting segment 323A is connected to the second connecting portion 322, and the distal connecting segment 323B is connected to the first connecting portion 321. The angle β between the distal connecting segment 323B and the first direction D1 is smaller than the angle α between the proximal connecting segment 323A and the first direction D1. By providing the above-mentioned proximal connecting segment 323A and distal connecting segment 323B, the pushing effect on the nail pushing member 31 can be better achieved while ensuring that the flexible connecting piece has a certain hardness. In some embodiments, the angle α is larger than the angle β, and the difference between the two is 3 to 5 degrees. For example, α is 8 to 12 degrees, and β is 4 to 8 degrees.

[0069] For example, the sum of the lengths of the first connecting portion 321 and the distal connecting segment 323B in the direction of extension of the distal connecting segment 323B is a, the length of the proximal connecting segment 323A in its direction of extension is b, and the length of the second connecting portion 322 in its direction of extension is c, where a>b>c. In this way, the pushing effect on the nail pusher 31 can be better achieved while ensuring that the flexible connecting piece has a certain hardness. Furthermore, in order to ensure that the force on the flexible connecting piece is more uniform, a is larger than b and the difference between the two is no more than 3mm. For example, a is 18.0~24.0mm, b is 16.5~21.5mm, and c is 8.7~14.7mm. The total length of the third connecting portion 323 in its direction of extension is 31.4~42.4mm.

[0070] For example, the total length of the strip connecting piece 32 in its extended direction is 43.2 to 60.2 mm. The dimension W of the strip connecting piece 32 in the third direction D3 (e.g., the width of the strip connecting piece 32) is 4 to 6 mm. The third direction D3 is perpendicular to the first direction D1 and the second direction D2. The total length of the strip connecting piece is related to various factors, including the length of the biasing spring, the movable distance (also known as the firing distance), and the sliding channel of the staple pusher. Through repeated experiments, the inventors have determined that by setting the above total length and dimension W, the pushing force on the staple pusher can be increased while ensuring that the number of staples reaches several dozen, thereby facilitating the bending and forming of the staples.

[0071] For example, Figure 3 As shown, the end suturing mechanism 11 further includes a spacer 23 disposed between the staple channel 22 and the staple pusher sliding channel 24. The spacer 23 is configured to separate the staple channel 22 and the staple pusher sliding channel 24. The spacer 23 is disposed between the staple channel 22 and the staple pusher sliding channel 24 along the second direction D2, thereby preventing the staple pusher and the staple from interfering with each other during their respective movements.

[0072] For example, the dimension C3 of the staple pusher 30 in the first direction D1 is greater than the dimension C2 of the staple pusher sliding channel 24 in the first direction D1, and the dimension C2 of the staple pusher sliding channel 24 in the first direction D1 is greater than the dimension C1 of the staple channel 22 in the first direction D1. Utilizing the above-described dimension design, the overall structure of the end suturing mechanism can be made more compact and smaller while ensuring that a large number of staples can be provided, thereby improving the space utilization within the end housing.

[0073] For example, Figure 2 and Figure 3As shown, the end suturing mechanism 11 further includes a biasing assembly 28, which is configured to apply a biasing force to the suture staples 26 in the suture staple channel 22 to keep the staple body of each suture staple 26 arranged in a vertical position in the suture staple channel 22. Through the above arrangement, it is also possible to ensure that the next suture staple is automatically replenished after the previous suture staple is pushed out, thereby ensuring that the multiple suture staples 26 are pushed out one by one, thereby improving suturing efficiency.

[0074] For example, the biasing assembly 28 includes an anvil 281 and a biasing member 282. The biasing member 282 is configured to apply a biasing force to the anvil 281. The anvil 281 is located in the suture staple channel 22 and is slidable. The anvil 281 is configured to abut against the plurality of suture staples 26 under the action of the biasing force. The biasing member 282 is, for example, a biasing spring. Furthermore, the cross-sectional shape of the anvil 281 is the same as the planar shape of the suture staples 26 so as to fully contact the suture staples 26 and provide uniform pressure on the suture staples 26. Furthermore, the anvil 281 and the biasing member 282 overlap with each other in the second direction, which can ensure that the end suturing mechanism 11 is more compact.

[0075] The following is a brief description of the working process of surgical instruments. Figure 7A and Figure 7B are overall and partial cross-sectional schematic diagrams of the surgical instrument in an initial state according to an embodiment of the present disclosure; Figure 8A and Figure 8B They are respectively overall and partial cross-sectional schematic diagrams of the surgical instrument in the nail-pushing state according to an embodiment of the present disclosure; Figure 9A and Figure 9B The figures are respectively the overall and partial cross-sectional schematic diagrams of the surgical instrument in the embodiment of the present disclosure in the state of suturing completion. Figure 7A and Figure 7B As shown, in the initial state, the driving rod 36 is located at position A of the shaft channel 25, and the staple pusher 30 is located in the staple pusher sliding channel 24. At this time, the plurality of staples 26 including the first staple 26a are all located in the staple channel 22. Figure 8A and Figure 8B As shown, the wrench 41 is rotated counterclockwise to move the drive rod 36 distally to position B. During this process, under the action of the drive rod 36, the staple pusher 30 moves distally along the extension direction of the staple pusher sliding channel 24 and pushes the first suture staple 26a out of the suture staple channel 22 along the second direction D2, so that the first suture staple 26a extends from the bottom 202P of the end housing 20. Figure 9A and Figure 9BAs shown, the wrench 41 is continued to be rotated counterclockwise to move the drive rod 36 distally to position C. During this process, under the further action of the drive rod 36, the staple pusher 30 and the anvil 33 located below the staple pusher 30 cooperate with each other to bend the suture staple 26 into shape, thereby achieving the suturing operation. After the suture staple 26 is bent into shape, it is released by the elastic release member 34 and leaves the suturing device. Afterwards, the wrench 41 can be rotated clockwise to move the drive rod 36 proximally back to position A. During this process, under the action of the drive rod 36, the staple pusher 30 moves proximally along the extension direction of the staple pusher sliding channel 24 and retreats into the staple pusher sliding channel 24, returning to the suture staple 26. Figure 7A 、 Figure 7B status.

[0076] In the surgical instrument suturing device and the surgical instrument provided in the above-described embodiment, a plurality of suture staples are stacked and arranged in a first direction parallel to the axis within the suture staple channel, and a staple pusher pushes the suture staples out of the suture staple channel in a second direction perpendicular to the axis. This arrangement not only increases the number of suture staples that can be accommodated in the suture staple channel (for example, up to thirty suture staples), but also allows the suture staples to be ejected from the bottom of the surgical instrument, facilitating observation of the suture process by the operator.

[0077] In this article, there are several points to note:

[0078] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0079] (2) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0080] (3) The above description is merely an exemplary embodiment of the present disclosure and is not intended to limit the scope of protection of the present disclosure. The scope of protection of the present disclosure is determined by the appended claims.

Claims

1. A suturing device for a surgical instrument, comprising: a shaft assembly, including a proximal end and a distal end; The end suturing mechanism is located at the distal end of the shaft assembly and includes a suture nail channel configured to accommodate a plurality of suture nails and a nail pusher sliding channel configured to accommodate a nail pusher, wherein, The plurality of staples are stacked and arranged in the staple channel along a first direction, the first direction being parallel to the axis of the shaft assembly; The staple pusher is configured to be slidable in the staple pusher sliding channel to push the staples out of the staple channel along a second direction, wherein the second direction is perpendicular to the first direction.

2. The suturing device according to claim 1, wherein: The staple pusher includes a staple pushing member configured to push the staple along the second direction in the staple pusher sliding channel so as to push the staple out of the staple channel along the second direction.

3. The suturing device according to claim 2, wherein: The nail pushing member includes a finger-shaped nail pushing piece, and the finger-shaped nail pushing piece includes a nail pushing piece body and a first protrusion arranged in pairs, and the first protrusion is configured to push the suture nail.

4. The suturing device according to claim 3, wherein: The finger-shaped nail pushing piece also includes a second protrusion arranged in a pair, and the nail pushing piece body includes a first side and a second side opposite to each other in the second direction, the first protrusion is arranged on the first side close to the suture nail, and the second protrusion is arranged on the second side away from the suture nail, and the second protrusion is arranged to keep the first protrusion moving in the second direction.

5. The suturing device according to claim 4, wherein: A dimension of the second protrusion in the second direction is greater than or equal to a dimension of the first protrusion in the second direction.

6. The suturing device according to claim 2, wherein: The suturing device further includes a driving mechanism configured to drive the staple pusher; the staple pusher further includes a flexible connector connected between the driving mechanism and the staple pusher, and the driving mechanism is configured to drive the staple pusher to move via the flexible connector.

7. The suturing device according to claim 6, wherein: The driving mechanism includes a driving member located in the shaft assembly, and the driving member, the nail pushing member and the flexible connecting member are configured as follows: When the driving member moves distally, the driving member pushes the staple pusher through the flexible connecting member to push the staple out of the staple channel; When the driving member continues to move distally, the driving member continues to push the staple pusher through the flexible connecting member to bend the staple.

8. The suturing device according to claim 6, wherein: The flexible connecting member includes a single-layer or multi-layer belt-shaped connecting piece.

9. The suturing device according to claim 8, wherein: The strip-shaped connecting piece includes a plurality of connecting portions, wherein the plurality of connecting portions include a first connecting portion connected to the nail-pushing member, and the first connecting portion has an arc shape.

10. The suturing device according to claim 9, wherein: The arc radius of the arc shape is 1-5 mm.

11. The suturing device according to claim 9, wherein: The plurality of connection parts further include a second connection part connected to the driving mechanism, and an extending direction of the second connection part is parallel to the first direction.

12. The suturing device according to claim 11, wherein: The plurality of connection portions further include a third connection portion connected between the first connection portion and the second connection portion, wherein an extension direction of the third connection portion is inclined relative to the first direction to form a slope between the first connection portion and the second connection portion.

13. The suturing device according to claim 12, wherein: The third connecting portion includes a proximal connecting segment and a distal connecting segment, the proximal connecting segment is connected to the second connecting portion, and the distal connecting segment is connected to the first connecting portion; the angle between the distal connecting segment and the first direction is smaller than the angle between the proximal connecting segment and the first direction.

14. The suturing device according to claim 13, wherein: The sum of the lengths of the first connecting portion and the distal connecting segment in the extending direction of the distal connecting segment is a, the length of the proximal connecting segment in its extending direction is b, and the length of the second connecting portion in its extending direction is c, then a>b>c.

15. The suturing device according to claim 8, wherein: The strip-shaped connecting piece is a metal piece.

16. The suturing device according to claim 8, wherein: The dimension of the strip connecting piece in the third direction is 4 to 6 mm, and the third direction is perpendicular to the first and second directions; the total length of the strip connecting piece in its extension direction is 43.2 to 60.2 mm; and the total thickness of the strip connecting piece is 0.1 to 0.5 mm.

17. The suturing device according to claim 1, wherein: The suturing device includes an end shell, the end suturing mechanism is located in the end shell, the end shell has a top and a bottom arranged opposite to each other in the second direction, the suturing staple channel is located between the top and the bottom, and the staple pusher sliding channel is located between the suturing staple channel and the top.

18. The suturing device according to claim 17, wherein: The end suturing mechanism further includes a spacer disposed between the suture staple channel and the staple pusher sliding channel, wherein the spacer is configured to separate the suture staple channel and the staple pusher sliding channel.

19. The suturing device according to any one of claims 1 to 18, wherein: The size of the staple pusher in the first direction is greater than the size of the staple pusher sliding channel in the first direction, and the size of the staple pusher sliding channel in the first direction is greater than the size of the suture staple channel in the first direction.

20. A surgical instrument comprising the suturing device according to any one of claims 1 to 19.

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