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. The end suturing mechanism is located at the far end of the shaft assembly and comprises a suturing nail channel, a plurality of suturing nails are arranged in the suturing nail channel, the suturing nails are stacked in the suturing nail channel in the first direction, and the first direction is parallel to the axis of the shaft assembly; the nail pusher sliding channel is internally provided with a nail pusher capable of sliding; wherein at least part of the nail pusher sliding channel extends in the second direction so that the suturing nails can be pushed out of the suturing nail channel through sliding of the nail pusher, and the second direction is perpendicular to the first direction. According to the suturing device, the number of suturing nails capable of being contained in the suturing nail channel can be increased, and compactness and compactness of the overall structure of the end suturing mechanism are guaranteed.

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] There are many surgical instruments used for suturing, one of which is a surgical instrument for hernia repair. This instrument can sew a repair piece and tissue together through suture staples to achieve seamless suturing, thereby improving the effect of the suturing operation. 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 ensure the compactness and smallness of the overall structure of the end suturing mechanism.

[0004] According to a first aspect of the present disclosure, a suturing device for a surgical instrument is provided, comprising a shaft assembly and an end suturing mechanism. The shaft assembly comprises a proximal end and a distal end. The end suturing mechanism is located at the distal end of the shaft assembly and comprises: a suturing staple channel, wherein a plurality of suturing staples are arranged in a stacked manner in the suturing staple channel along a first direction, wherein the first direction is parallel to the axis of the shaft assembly; and a staple pusher sliding channel, wherein a slidable staple pusher is arranged in the staple pusher sliding channel; wherein at least a portion of the staple pusher sliding channel extends along a second direction so as to push the suturing staple out of the suturing staple channel by sliding the staple pusher, wherein the second direction is perpendicular to the first direction.

[0005] In at least some embodiments, the suturing device includes an end shell that accommodates the end suturing mechanism 11, the end shell having a top and a bottom that are arranged opposite to each other in a 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 and is connected to the suturing staple channel.

[0006] In at least some embodiments, the shaft assembly includes a shaft channel, the distal end of the staple pusher sliding channel is connected to the suture staple channel, the proximal end of the staple pusher sliding channel is connected to the shaft channel, and the staple pusher is further configured to slide in the shaft channel.

[0007] In at least some embodiments, a dimension of the staple pusher sliding channel in the first direction is greater than a dimension of the staple channel in the first direction.

[0008] In at least some embodiments, the staple pusher sliding channel includes a plurality of sub-channels, wherein the plurality of sub-channels include a first sub-channel connected to the staple channel, and an extension direction of the first sub-channel is parallel to the second direction.

[0009] In at least some embodiments, the nail pusher sliding channel further includes a second sub-channel, the second sub-channel is connected to the shaft channel, and an extension direction of the second sub-channel and the second direction intersect with each other.

[0010] In at least some embodiments, the shaft assembly has an axis parallel to the first direction, and a perpendicular distance from the second sub-channel to the axis decreases nonlinearly in a direction from the distal side to the proximal side.

[0011] In at least some embodiments, the second subchannel includes a proximal channel segment and a distal channel segment connected to each other, and the angle between the distal channel segment and the first direction is smaller than the angle between the proximal channel segment and the first direction.

[0012] In at least some embodiments, the nail pusher sliding channel further includes a third sub-channel connected between the first sub-channel and the second sub-channel, and the third sub-channel is configured to have an arc shape to smoothly connect the first sub-channel and the second sub-channel.

[0013] In at least some embodiments, the vertical distance from the junction of the second sub-channel and the third sub-channel to the top of the end housing is the shortest.

[0014] In at least some embodiments, the staple pusher includes a staple pusher member configured to slide out of the staple pusher sliding channel to push the staple out of the staple channel along the second direction.

[0015] In at least some embodiments, the suturing device further includes a driving mechanism, which includes a driving member arranged in the shaft assembly; the nail pusher further includes a flexible connector, the proximal end of the flexible connector is connected to the driving member, and the distal end of the flexible connector is connected to the nail pusher; the driving member is configured to drive the nail pusher to move through the flexible connector.

[0016] In at least some embodiments, the shaft assembly further includes a shaft channel connected to the nail pusher sliding channel, and the driving member is slidably disposed in the shaft channel.

[0017] In at least some embodiments, the nail-pushing member includes a finger-shaped nail-pushing piece, and the flexible connecting member includes a belt-shaped connecting piece.

[0018] In at least some embodiments, the flexible connector includes at least two layers of ribbon-like connecting sheets.

[0019] In at least some embodiments, the body of each suture staple is in a vertical position, the plurality of suture staples are stacked along the first direction, and the extension direction of the suture staple channel is parallel to the first direction.

[0020] In at least some embodiments, the end suturing mechanism further comprises a biasing assembly in the end housing, wherein the biasing assembly is configured to apply a biasing force to the staples in the staple channel to keep the staple body of each staple closely arranged in a vertical position.

[0021] In at least some embodiments, the biasing assembly includes a retaining member and a biasing member, wherein the biasing member is configured to apply a biasing force to the retaining member, the retaining member is located in the suture staple channel and is slidable, and the retaining member is configured to press against the multiple suture staples under the action of the biasing force.

[0022] According to a second aspect of the present disclosure, a surgical instrument is provided, comprising the aforementioned suturing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 Schematic diagram of the structure of the surgical instrument according to the embodiment of the present invention.

[0025] Figure 2 It is a partial exploded view of a surgical instrument according to an embodiment of the present disclosure.

[0026] Figure 3 A partial cross-sectional view of an end-stitching mechanism provided in accordance with an embodiment of the present disclosure.

[0027] Figure 4 Another partial cross-sectional view of the end suturing mechanism of the surgical instrument according to the embodiment of the present disclosure.

[0028] Figure 5A and Figure 5B 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.

[0029] Figure 6A and Figure 6B 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.

[0030] Figure 7A and Figure 7B 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.

[0031] Figure 8 Schematic diagram of the structure of the nail pusher of the surgical instrument according to the embodiment of the present disclosure.

[0032] Figure 9 Schematic diagram of the structure of the anvil and elastic release member of the surgical instrument according to the embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] In known surgical instruments, the suture staple channel is oriented along a second direction perpendicular to the axial direction Z, and the suture staples accommodated in the suture staple channel are arranged horizontally, resulting in a small number of suture staples and a large overall structural size, which cannot meet the needs of the operator.

[0037] An embodiment of the present disclosure provides a suturing device for a surgical instrument, comprising a shaft assembly and an end suturing mechanism. The shaft assembly comprises a proximal end and a distal end. The end suturing mechanism is located at the distal end of the shaft assembly and comprises a suture nail channel and a staple pusher sliding channel. A plurality of suture nails are provided in the suture nail channel, and the plurality of suture nails are stacked and arranged in the suture nail channel along a first direction, wherein the first direction is parallel to the axis of the shaft assembly. A slidable staple pusher is provided in the staple pusher sliding channel; wherein at least a portion of the staple pusher sliding channel extends along a second direction so that the suture nail can be pushed out of the suture nail channel by sliding the staple pusher, wherein the second direction is perpendicular to the first direction.

[0038] The presently disclosed embodiment also provides a surgical instrument comprising the aforementioned suturing device.

[0039] In the suturing device and surgical instrument provided by the above-mentioned embodiments of the present disclosure, by providing a suturing staple channel and a staple pusher sliding channel and making at least a portion of the staple pusher sliding channel extend along a second direction, the suturing staples are pushed out of the suturing staple channel along a second direction perpendicular to the axial direction (for example, a radial direction). This not only increases the number of suturing staples that can be accommodated in the suturing staple channel, but also ensures the compactness and smallness of the overall structure of the end suturing mechanism.

[0040] In the embodiment of the present disclosure, the first direction is, for example, parallel to the axial direction, and the second direction is, for example, perpendicular to the axial direction. In addition, the second direction is also perpendicular to the extending direction of the suture staple channel.

[0041] 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.

[0042] 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 an end-stitching mechanism provided in accordance with an embodiment of the present disclosure. Figure 4 Another partial cross-sectional view of the end suturing mechanism of the surgical instrument according to the embodiment of the present disclosure.

[0043] 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.

[0044] 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.

[0045] For example, the end suturing mechanism 11 includes a staple channel 22, which is provided with a plurality of staples 26. The plurality of staples 26 are stacked and arranged in the staple channel 22 along a first direction D1, wherein the first direction D1 is parallel to the axis Z of the shaft assembly 12. Furthermore, the shanks of each staple 26 are closely arranged in a vertical position in the staple channel 22, with the shanks of two adjacent staples 26 contacting each other. Thus, when observing the staples in the staple channel 22 from the perspective of the first direction D1, only the shank of the first staple 26 is visible. The first direction D1 is parallel to the axis Z. This arrangement enables the staples 26 to stand upright in the staple channel 22. Compared to conventional arrangements in which staples are arranged flat or tilted in the staple channel 22, this increases the number of staples accommodated in the staple channel 22, reduces the frequency of intraoperative surgical instrument changes, shortens surgical time, and reduces surgical costs. In the disclosed embodiments, "plurality" refers to two or more.

[0046] For example, the end suturing mechanism 11 further includes a staple pusher sliding channel 24, in which a slidable staple pusher 30 is disposed. At least a portion of the staple pusher sliding channel 24 extends along a second direction D2, so that the staples are pushed out of the staple channel 22 by sliding of the staple pusher 30, wherein the second direction D2 is perpendicular to the first direction D1, for example, the second direction D2 is perpendicular to the axial direction Z. Furthermore, the staple pusher sliding channel 24 is disposed on a side of the staple channel 22 away from the bottom 202P of the end housing 20 in the second direction D2, thereby facilitating the pushing of the staples 26 out of the bottom along the second direction D2 to achieve suturing, and making it easier for an observer to observe the suturing process.

[0047] For example, the suturing device 10 includes an end housing 20 that accommodates the end suturing mechanism 11. The end housing 20 has a top 201P and a bottom 202P that are arranged opposite to each other in the second direction D2. The suture nail channel 22 is located between the top 201P and the bottom 202P. The staple pusher sliding channel 24 is located between the suture nail channel 22 and the top 201P and is connected to the suture nail channel 22, thereby facilitating the staple pusher 30 to push out the suture nail 26.

[0048] Furthermore, the end housing 20 includes, for example, 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 arranged relative to each other in the second direction D2. The suturing staple channel 22 and the staple pusher sliding channel 24 are both arranged between the top portion 201P and the bottom portion 202P. Compared to a case where the suturing staple channel or the staple pusher sliding channel is arranged outside the end housing, the above-described structure can improve space utilization within the end housing, making the overall structure of the suturing device more compact.

[0049] Further, for example, Figure 4 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.

[0050] For example, the shaft assembly 12 includes a shaft channel 25, the distal end of the staple pusher sliding channel 24 is connected to the suture staple channel 22, the proximal end of the staple pusher sliding channel 24 is connected to the shaft channel 25, and the staple pusher 30 is also configured to slide in the shaft channel 25. The shaft channel 25 is configured to accommodate the drive mechanism 14 (described in detail later), such as the drive rod 36. Figure 3 As shown, the proximal end of the staple pusher 30 is operably connected to a drive rod 36, which is configured to drive the staple pusher 30. Since the proximal end of the staple slide channel 24 is connected to the shaft channel 25, the proximal end of the staple pusher 30 can slide in the shaft channel 25, thereby controlling the ejection or bending of the suture staple 26.

[0051] For example, Figure 4 As shown, 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. This arrangement helps increase the displacement (i.e., stroke distance) of the staple pusher 30 in the staple pusher sliding channel 24, thereby improving the suturing effect of the staple 26. Furthermore, 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. This allows a portion of the staple pusher 30 to be accommodated within the shaft channel 25, improving the overall compactness and small size of the end effector structure.

[0052] For example, Figure 2As shown, the suturing device 10 also includes a drive mechanism 14, which includes a drive member disposed in the shaft assembly 12, such as a drive rod 36. The staple pusher includes a staple pusher, which is configured to move along the second direction D2 in the staple pusher sliding channel and is operable to push the suture staple 26 to push the suture staple 26 out of the suture staple channel 22 along the second direction D2. The staple pusher includes, for example, a finger-shaped staple pusher 31. The staple pusher 30 also includes a flexible connector connected between the drive rod 36 and the staple pusher, wherein the proximal end of the flexible connector is connected to the drive rod 36, and the distal end of the flexible connector is connected to the staple pusher. For example, the drive rod 36 is configured to drive the staple pusher to move via the flexible connector.

[0053] In the embodiment of the present disclosure, by providing a flexible connector, it is beneficial to realize the driving effect of the driving mechanism 14 on the nail pushing member. Moreover, because the connector is configured to be flexible, it can bend and deform along the direction of the nail pusher sliding channel 24, thereby realizing the pushing effect on the nail pushing member. The nail pusher sliding channel 24 is a non-linear or straight channel. If a rigid connector is selected, it is not easy to bend and the driving effect on the nail pushing member cannot be achieved. In the embodiment of the present disclosure, by providing a flexible connector between the nail pushing member and the driving mechanism, the driving effect of the driving mechanism on the nail pushing member can be ensured. In addition, through the flexible connector, the axial motion of the driving mechanism along the first direction D1 can be converted into radial motion along the second direction D2, which is beneficial to pushing the nail along the second direction D2.

[0054] For example, the flexible connector may include a single-layer or multi-layer ribbon-shaped connecting piece 32. For example, the flexible connector may include at least two layers of ribbon-shaped connecting pieces 32. In the disclosed embodiment, the ribbon-shaped connecting piece 32 may be a single layer or a stacked multi-layer structure. A single layer simplifies the manufacturing process; a multi-layer structure provides a certain degree of rigidity while maintaining flexibility, making it less susceptible to breakage.

[0055] For example, the drive rod 36, the finger-shaped nail-pushing piece 31, and the strip-shaped connecting piece 32 are linked in the following manner: when the drive rod 36 moves distally, the drive rod 36 pushes the finger-shaped nail-pushing piece 31 via the strip-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-pushing piece 31 via the strip-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-pushing piece 31. Thus, the drive rod 36 of the disclosed embodiment can move distally or proximally in the first direction D1, and controls the advancement or retreat of the finger-shaped nail-pushing piece 31 via the strip-shaped connecting piece 32.

[0056] For example, the strip connecting piece 32 is a metal sheet, including a steel sheet. In some embodiments, the flexible connecting piece comprises a plurality of stacked steel sheets, the total thickness of which is 0.1 to 0.5 mm. For example, along the thickness direction of the strip connecting piece 32, the gap between the nail pusher sliding channel 24 and the strip connecting piece 32 is 0.1 to 0.5 mm, thus providing ample space for the strip connecting piece to move.

[0057] For example, Figure 3 As shown, the staple pusher sliding channel 24 includes multiple sub-channels, including a first sub-channel 241. The first sub-channel 241 is connected to the staple channel 22 and extends parallel to the second direction D2. For example, the second direction D2 is a vertical direction. The provision of the first sub-channel 241 facilitates the vertical movement of the staple pusher (e.g., the finger-shaped staple pusher 31).

[0058] For example, the nail pusher sliding channel 24 further includes a second sub-channel 242, which is connected to the shaft channel 25. The extension direction of the second sub-channel 242 intersects the second direction D2. For example, the extension direction of the second sub-channel 242 forms an angle with the first direction D1 that is less than 45 degrees, further less than or equal to 30 degrees, and further less than or equal to 15 degrees.

[0059] The provision of the second sub-channel 242 not only facilitates the accommodation of flexible connectors (e.g., the connecting strip 32) but also prevents the flexible connector from breaking through the top portion 201P during distal movement. In some cases, if the second sub-channel 242 extends parallel to the first direction D1, the connecting strip 32 may break through the top portion 201P under high thrust from the drive rod 26, potentially damaging the device. By ensuring that the extension direction of the second sub-channel 242 and the first direction D1 are at an angle less than 45 degrees, a high thrust can be provided to the connecting strip 32 without damaging the device.

[0060] For example, the shaft assembly 12 has an axis parallel to the first direction D1 (refer to the axis direction Z, not separately indicated). In the direction from distal to proximal, the perpendicular distance DS from the second sub-channel 242 to the axis Z decreases nonlinearly. That is, the perpendicular distance DS does not decrease gradually in the first direction D1 from distal to proximal. This further increases the thrust of the strip-like connecting piece 32 on the finger-like nail-pushing piece 31.

[0061] For example, the second sub-channel 242 includes a proximal channel segment 242A and a distal channel segment 242B, which are connected to each other. The angle β between the distal channel segment 242B and the first direction D1 is smaller than the angle α between the proximal channel segment 242 and the first direction D1. For example, the angle β is 4 to 8 degrees, and the angle α is 8 to 12 degrees. This angle arrangement ensures that the strip-shaped connecting piece 32 can generate a strong thrust on the finger-shaped nail-pushing piece 31 when moving distally.

[0062] For example, the nail pusher sliding channel 24 further includes a third sub-channel 243 connected between the first sub-channel 241 and the second sub-channel 242. The third sub-channel 243 is configured to have an arcuate shape to smoothly connect the first sub-channel 241 and the second sub-channel 242. By configuring the third sub-channel 243 to have an arcuate shape, the force transmission direction can be changed as needed, the downward thrust of the finger-shaped nail pusher 31 is increased, and the nail ejection effect is ensured. In addition, the overall size of the end effector is reduced, which facilitates the compactness, smallness, and flexibility of the device.

[0063] For example, the arc radius R of the arc shape is 1-5 mm. Furthermore, for example, it is 2-4 mm. Even further, for example, it is 2.5-3.5 mm, thereby further ensuring nail removal efficiency. If the arc radius R is greater than 5 mm, it may exceed the radial dimension of the end shell. If it is less than 1 mm, the flexible connector (e.g., the strip-shaped connector 32) is unable to push the nail pusher (e.g., the finger-shaped nail pusher 31) due to the excessively small arc radius.

[0064] For example, the vertical distance from the connection point between the second sub-channel 242 and the third sub-channel 243 to the top 201P of the end shell 20 is the shortest. In this way, the vertical distance Dsmin from the outer surface of the strip-shaped connecting piece 32 to the top 201P of the end shell 20 is the shortest (e.g., Figure 3 As shown), so that the strip connecting piece can also obtain the largest possible arc radius, while ensuring the integrity of the top structure of the end shell 20 and ensuring strength. Figure 3 As shown, in order to ensure that the strip connecting piece 32 has a large thrust during movement and avoids breakage, the vertical distance from the connection point between the second sub-channel 242 and the third sub-channel 243 to the top 201P of the end housing 20 is the shortest, for example, 0.1-0.5 mm.

[0065] Figure 8 FIG. 1 is a schematic structural diagram of a nail pusher of a surgical instrument according to an embodiment of the present disclosure. Figure 8As shown, for example, the strip-shaped connecting piece 32 includes multiple connecting portions, including a first connecting portion 321 connected to a staple pusher (e.g., the finger-shaped staple pusher 31). The first connecting portion 321 has an arcuate shape. For example, the multiple connecting portions also include a second connecting portion 322 connected to the drive rod 36. The second connecting portion 322 extends parallel to the first direction D1. Because the second connecting portion 322 is connected to the drive rod 36, the force applied by the drive rod 36 is effectively transmitted to the other connecting portions of the strip-shaped connecting piece 32 along the first direction D1. For example, the multiple connecting portions also include a third connecting portion 323 connected between the first connecting portion 321 and the second connecting portion 322. The third connecting portion 323 extends in an angled direction relative to the first direction D1, forming a slope between the first connecting portion 321 and the second connecting portion 322. The provision of the third connecting portion 323 facilitates the finger-shaped staple pusher 31 in pushing the staple 26 out of the staple channel 22 in a direction different from the first direction D1 (e.g., the second direction D2). 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 between the distal connecting segment 323B and the first direction D1 is smaller than the angle between the proximal connecting segment 323A and the first direction D1. By providing these proximal connecting segment 323A and distal connecting segment 323B, the pushing action of the nail pusher can be better achieved while ensuring that the flexible connecting piece has a certain degree of hardness.

[0066] For example, the end suturing mechanism 11 further includes a biasing assembly 28 located in the end housing 20. The biasing assembly 28 is configured to apply a biasing force to the suture staples 26 in the suture staple channel 22 to maintain the staples 26 in a vertically aligned and closely aligned state. The provision of the biasing assembly 28 also ensures that the next suture staple is automatically replenished after the previous suture staple is ejected, thereby ensuring that the multiple suture staples 26 are ejected one by one, thereby improving suturing efficiency.

[0067] 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.

[0068] For example, reference Figures 2 to 4The spacer 23, the top shell 201, and the bottom shell 202 are interlocked to form the end shell 20, wherein the spacer 23 is located between the top shell 201 and the bottom shell 202. By providing the spacer 23, the end shell 20 can be roughly divided into two accommodating spaces: one accommodating space is located above the spacer 23 and is used as a staple pusher sliding channel 24; the other accommodating space is located below the spacer 23, and at least the suture staple channel 22, the biasing assembly 28, the anvil 33, and the elastic release member 34 are provided in the accommodating space. Through the above-mentioned arrangement, it is possible to improve the space utilization of the end shell while providing a large number of suture staples, thereby making the overall structure of the end suture mechanism more compact.

[0069] The following is a brief description of the working process of surgical instruments. Figure 5A and Figure 5B 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 6A and Figure 6B 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 7A and Figure 7B 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 5A and Figure 5B 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 6A and Figure 6B 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 7A and Figure 7B As 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 stapler 30 and the anvil 33 located below the stapler 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 or kicked out 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 stapler 30 moves proximally along the extension direction of the stapler sliding channel 24 and retreats back into the stapler sliding channel 24, returning to the suture stapler sliding channel 24. Figure 5A 、 Figure 5B status.

[0070] Figure 9 FIG. 1 is a schematic structural diagram of an anvil and an elastic release member of a surgical instrument according to an embodiment of the present disclosure. Figure 9 As shown, for example, the anvil 33 includes an anvil body 330 and a pair of anvil forming members 332 extending from the anvil body 330. The pair of anvil forming members 332 are configured to cooperate with a staple pusher (e.g., a finger-shaped staple pusher 31) to bend the staple 26 around the pair of anvil forming members 332. For example, when the finger-shaped staple pusher 31 pushes the staple 26 downward, the two legs of the staple 26 bend vertically around the pair of anvil forming members 332. Since the staple 26 can be bent vertically, the time from staple ejection to bending is shortened, improving suturing efficiency. To enhance the stability of the anvil, the anvil body 330 can be fixedly connected to the end housing 20. In the disclosed embodiment, since the staple pusher 30 pushes the staple 26 out of the staple channel 22 in the second direction D2, causing the staple 26 to extend from the bottom 202P, and the second direction D2 is perpendicular to the first direction D1, the two legs of the staple 26 are more easily visible to the operator after extending from the bottom 202P, facilitating subsequent suturing operations.

[0071] For example, the elastic release member 34 includes a release member body 340 connected to the anvil 33 and a pair of elastic arms 342 extending from the release member body 340 toward the staple 26. Each elastic arm 342 is configured to elastically deform when the staple 26 and the staple pusher 30 move in the second direction D2 toward the bottom 202P, squeezed by the staple and / or the staple pusher 30. Furthermore, when the staple pusher 30 moves in the second direction D2 toward the top 201P, the elastic arm 342 releases the bent staple 26. The provision of the elastic release member 34 facilitates the removal of the bent staple from the surgical instrument.

[0072] In the suturing device and surgical instrument provided by the above-mentioned embodiments of the present disclosure, by providing a suturing staple channel and a staple pusher sliding channel and making at least a portion of the staple pusher sliding channel extend along a second direction, the suturing staples are pushed out of the suturing staple channel along a second direction perpendicular to the axial direction (for example, a radial direction). This not only increases the number of suturing staples that can be accommodated in the suturing staple channel, but also ensures the compactness and smallness of the overall structure of the end suturing mechanism.

[0073] In this article, there are several points to note:

[0074] (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.

[0075] (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.

[0076] (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; an end stapling mechanism located at the distal end of the shaft assembly and comprising: a staple channel, wherein a plurality of staples are disposed in the staple channel, wherein the plurality of staples are stacked and disposed in the staple channel along a first direction, wherein the first direction is parallel to the axis of the shaft assembly; A staple pusher sliding channel is provided with a slidable staple pusher; wherein, at least a portion of the staple pusher sliding channel extends along a second direction so as to push the suture staple out of the suture staple channel by sliding of the staple pusher, wherein the second direction is perpendicular to the first direction.

2. The suturing device according to claim 1, wherein: The suturing device includes an end shell for accommodating the end suturing mechanism, the end shell having a top and a bottom arranged opposite to each other in a second direction, the suturing staple channel being located between the top and the bottom, and the staple pusher sliding channel being located between the suturing staple channel and the top and being communicated with the suturing staple channel.

3. The suturing device according to claim 2, wherein: The shaft assembly includes a shaft channel, the distal end of the staple pusher sliding channel is connected to the suture staple channel, the proximal end of the staple pusher sliding channel is connected to the shaft channel, and the staple pusher is further configured to be slidable in the shaft channel.

4. The suturing device according to claim 3, wherein: 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.

5. The suturing device according to claim 3, wherein: The staple pusher sliding channel includes a plurality of sub-channels, wherein the plurality of sub-channels include a first sub-channel connected to the staple channel, and an extension direction of the first sub-channel is parallel to the second direction.

6. The suturing device according to claim 5, wherein: The nail pusher sliding channel further includes a second sub-channel, the second sub-channel is connected to the shaft channel, and an extension direction of the second sub-channel and the second direction intersect with each other.

7. The suturing device according to claim 6, wherein: The shaft assembly has an axis parallel to the first direction, and in a direction from the distal side to the proximal side, a perpendicular distance from the second sub-channel to the axis decreases nonlinearly.

8. The suturing device according to claim 7, wherein: The second sub-channel includes a proximal channel segment and a distal channel segment connected to each other, and an angle between the distal channel segment and the first direction is smaller than an angle between the proximal channel segment and the first direction.

9. The suturing device according to claim 5, wherein: The nail pusher sliding channel further includes a third sub-channel connected between the first sub-channel and the second sub-channel, and the third sub-channel is configured to have an arc shape so that the first sub-channel and the second sub-channel are smoothly connected.

10. The suturing device according to claim 9, wherein: The vertical distance from the connection between the second sub-channel and the third sub-channel to the top of the end shell is the shortest.

11. The suturing device according to claim 1, wherein: The staple pusher includes a staple pusher member, which is configured to be slidable out of the staple pusher sliding channel to push the staple out of the staple channel along a second direction.

12. The suturing device according to claim 11, wherein: The suturing device also includes a driving mechanism, which includes a driving member arranged in the shaft assembly; the nail pusher also includes a flexible connecting member, the proximal end of the flexible connecting member is connected to the driving member, and the distal end of the flexible connecting member is connected to the nail pushing member; the driving member is configured to drive the nail pushing member to move through the flexible connecting member.

13. The suturing device according to claim 12, wherein: The shaft assembly further includes a shaft channel connected to the nail pusher sliding channel, and the driving member is slidably disposed in the shaft channel.

14. The suturing device according to claim 11, wherein: The nail pushing member includes a finger-shaped nail pushing piece, and the flexible connecting member includes a belt-shaped connecting piece.

15. The suturing device according to claim 14, wherein: The flexible connecting element comprises at least two layers of belt-shaped connecting pieces.

16. The suturing device according to any one of claims 1 to 15, wherein: The body of each suture staple is in a vertical state, the plurality of suture staples are stacked along the first direction, and the extension direction of the suture staple channel is parallel to the first direction.

17. The suturing device according to claim 16, wherein: The end suturing mechanism further comprises a biasing assembly located in the end housing, wherein the biasing assembly is configured to apply a biasing force to the suture staples in the suture staple channel to keep the staple body of each suture staple closely arranged in a vertical state.

18. The suturing device according to claim 17, wherein: The biasing assembly includes a stapler and a biasing member, wherein the biasing member is configured to apply a biasing force to the stapler, the stapler is located in the staple channel and is slidable, and the stapler is configured to press against the multiple staples under the action of the biasing force.

19. A surgical instrument comprising the suturing device according to any one of claims 1 to 18.

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