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 an end housing and an end stapling mechanism. The end housing includes a top portion and a bottom portion. The end stapling mechanism includes a staple channel, a staple pusher, and an anvil. The suturing nail channel is located between the top and the bottom and extends in the first direction, and a plurality of suturing nails are arranged in the suturing nail channel in a stacked mode in the first direction. The nail pushing device is located between the suturing nail channel and the top and is arranged to push the suturing nails out of the suturing nail channel in the second direction so that the suturing nails can stretch out of the bottom, and the second direction is perpendicular to the first direction. An anvil is located between the staple channel and the bottom, the anvil being configured to cooperate with the staple pusher to bend the staple. According to the suturing device, the number of suturing nails contained in the suturing nail channel can be increased, and the internal structure of the end suturing mechanism is more compact.

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] During surgical hernia repair, surgical instruments such as hernia staplers are crucial tools for achieving the desired effect. They drive staples into the tissue at a specific angle and force, achieving a seamless connection between the patch and the tissue. Regarding mesangial fixation, suturing devices securely secure the mesangium without disrupting mesenteric blood flow, preventing displacement or loosening, and providing strong support for the patient's postoperative recovery. Summary of the Invention

[0003] According to an embodiment of the present disclosure, a suturing device for a surgical instrument and a surgical instrument thereof are provided. On the one hand, the number of suture staples accommodated in the suture staple channel can be increased, the operation time can be shortened, and the operation cost can be reduced. On the other hand, the frequent operation of replacing surgical instruments can be reduced, the convenience of use by the operator can be improved, and the operator can observe the removal of suture staples more conveniently to judge the suturing effect. On the other hand, the internal structure of the end suturing mechanism can be made more compact, and the overall structure can be small and flexible.

[0004] According to a first aspect of the present disclosure, a suturing device of a surgical instrument is provided, comprising: an end shell including a top and a bottom; and an end suturing mechanism located in the end shell and comprising: a suture staple channel located between the top and the bottom and extending along a first direction, wherein the plurality of suture staples are stacked and arranged in the suture staple channel along the first direction; a staple pusher located between the suture staple channel and the top, wherein the staple pusher is configured to push the suture staple out of the suture staple channel along a second direction so that the suture staple extends from the bottom, wherein the second direction is perpendicular to the first direction; and an anvil located between the suture staple channel and the bottom, wherein the anvil is configured to cooperate with the staple pusher to bend the suture staple.

[0005] In at least some embodiments, the anvil includes an anvil body connected to the base and a pair of anvil forming members extending from the anvil body, and the staples are configured to bend around the pair of anvil forming members in a vertical state.

[0006] In at least some embodiments, the anvil forming members extend in a direction parallel to the first direction, and the pair of anvil forming members are spaced apart from each other in a third direction that is perpendicular to the first and second directions.

[0007] In at least some embodiments, the end suturing mechanism further comprises an elastic release member, at least a portion of which is located between the anvil and the staple channel in the second direction, the elastic release member being configured to release the bent staple.

[0008] In at least some embodiments, the elastic release member includes a release member body connected to the anvil and a pair of elastic arms extending from the release member body toward the suture staple, wherein the elastic arms are configured as follows:

[0009] When the suture staple and the staple pusher move toward the bottom along the second direction, the suture staple and / or the staple pusher are squeezed and elastically deformed; and

[0010] When the staple pusher moves toward the top along the second direction, the elastic arm releases the bent staple.

[0011] In at least some embodiments, the elastic arm includes a first arm and a second arm connected to each other, the first arm is connected to the release member body, the proximal end of the second arm is connected to the first arm, and the distal end of the second arm is a cantilevered end, and the cantilevered end is configured to move clockwise or counterclockwise relative to the first arm.

[0012] In at least some embodiments, the end suturing mechanism further comprises a biasing assembly configured to apply a biasing force to the staples in the staple channel to keep the body of each staple arranged in a vertical position in the staple channel.

[0013] 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.

[0014] In at least some embodiments, the biasing member is located between the suture nail channel and the bottom of the end shell in the second direction, one end of the biasing member is fixedly connected to the bottom, and the other end of the biasing member is connected to the nail support member.

[0015] In at least some embodiments, the end suturing mechanism further includes: a staple pusher sliding channel, wherein the staple pusher sliding channel is located between the staple channel and the top and its extension direction is not parallel to the sliding direction of the staple channel, and the staple pusher is configured to be slidable in the staple pusher sliding channel.

[0016] In at least some embodiments, the suturing device further includes an axis assembly, which includes an axis channel; the distal end of the staple pusher sliding channel is connected to the suturing staple channel, and the proximal end of the staple pusher sliding channel is connected to the axis channel, and the staple pusher is further configured to slide in the axis channel.

[0017] In at least some embodiments, at least a portion of the nail pusher sliding channel extends in a direction parallel to the second direction, so that the nail pusher slides along the second direction.

[0018] In at least some embodiments, the staple pusher sliding channel includes a plurality of sub-channels, wherein the plurality of sub-channels includes a first sub-channel connected to the staple channel and extending in a direction parallel to the second direction.

[0019] 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 intersects with the first direction.

[0020] 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.

[0021] In at least some embodiments, the vertical distance from the connection between the second sub-channel and the third sub-channel to the top is the shortest.

[0022] In at least some embodiments, the suturing device further includes a driving mechanism configured to drive the staple pusher, the staple pusher including a staple pusher and a flexible connector, the staple pusher being configured to move along the second direction and operably push the staple to push the staple out of the staple channel along the second direction; the proximal end of the flexible connector is connected to the driving mechanism, the distal end of the flexible connector is connected to the staple pusher, and the driving mechanism is configured to drive the staple pusher to move via the flexible connector.

[0023] According to a second aspect of the present disclosure, a surgical instrument is provided, comprising the suturing device described in any one of the above items. 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 A schematic structural diagram of a surgical instrument provided in an embodiment of the present disclosure.

[0026] Figure 2 A partially 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 provided in accordance with an embodiment of the present disclosure.

[0028] Figure 4A and Figure 4B 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 5A and Figure 5B 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 6A and Figure 6B 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 7 Schematic diagram of the partial structure of the surgical instrument according to the embodiment of the present disclosure.

[0032] Figure 8A FIG. 2 is a schematic diagram of the unbent state of the suture staple 26 according to the embodiment of the present disclosure.

[0033] Figure 8B FIG. 2 is a schematic diagram of a bent state of a suture staple 26 according to an embodiment of the present disclosure.

[0034] Figure 9 Schematic diagram of the structure of the elastic release member 34 according to an embodiment of the present disclosure.

[0035] Figure 10 Schematic diagram of the principle of the elastic release member of the embodiment of the present disclosure. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Conventional surgical instruments used for hernia repair typically contain only a few staples, typically around a dozen. Once the staples are used up, the instruments must be replaced, even if the surgery is not yet complete. This wastes surgical time, prolongs the procedure, and increases costs. Furthermore, frequent instrument replacement is inconvenient for the operator (doctor or nurse) and poses a risk of contaminating the surgical environment.

[0040] An embodiment of the present disclosure provides a suturing device for a surgical instrument, comprising an end housing and an end suturing mechanism. The end housing comprises a top and a bottom. The end suturing mechanism is located in the end housing and comprises a suture nail channel, a nail pusher, and an anvil. The suture nail channel is located between the top and the bottom and extends along a first direction, and the plurality of suture nails are stacked and arranged in the suture nail channel along the first direction. The nail pusher is located between the suture nail channel and the top, and the nail pusher is configured to push the suture nail out of the suture nail channel along a second direction so that the suture nail extends from the bottom, wherein the second direction is perpendicular to the first direction. The anvil is located between the suture nail channel and the bottom, and the anvil is configured to cooperate with the nail pusher to bend the suture nail.

[0041] The present disclosure also provides a surgical instrument including the above-mentioned suturing device.

[0042] In the surgical instrument suturing device and the surgical instrument provided in the above-mentioned embodiments, the staple pusher pushes the staple out of the staple channel in a second direction (e.g., vertical direction) perpendicular to the first direction (e.g., horizontal direction), allowing the staple to extend from the bottom of the end housing. This increases the number of staples accommodated in the staple channel, shortening surgical time and reducing surgical costs. Furthermore, it reduces the need for frequent instrument changes, improves operator convenience, and facilitates observation of staple removal, facilitating assessment of suturing effectiveness. Furthermore, it also makes the internal structure of the end suturing mechanism more compact, resulting in a compact and flexible overall structure.

[0043] 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.

[0044] Figure 1 A schematic structural diagram of a surgical instrument provided in an embodiment of the present disclosure. Figure 2 A partially 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 provided in accordance with an embodiment of the present disclosure.

[0045] For example, Figures 1 to 3 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.

[0046] For example, the shaft assembly 12 includes a proximal end 12A and a distal end 12B that are opposed 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 actuator 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 actuator 40 includes a wrench 41 that can be rotated clockwise or counterclockwise to control the advancement or retraction of the drive mechanism (described in detail later) in the axial direction, thereby achieving operations such as pushing and bending the suture staples.

[0047] For example, the end shell 20 includes a top shell 201 and a bottom shell 202, and the end sewing mechanism 11 is located in the accommodation space between the top shell 201 and the bottom shell 202. Figure 3As shown, the top housing 201 includes a top portion 201P, and the bottom housing 202 includes a bottom portion 202P. The end suturing mechanism 11 includes a staple channel 22 located between the top portion 201P and the bottom portion 202P and extending along a first direction D1. A plurality of staples 26 are stacked and arranged in the staple channel 22 along the first direction D1.

[0048] For example, Figure 2 As shown, the body of each suture staple 26 is in a vertical position, and the plurality of suture staples 26 are stacked along a first direction D1, that is, the stacking direction is parallel to the first direction D1. In the related art, the suture staples 26 are arranged in a horizontal or inclined manner relative to the first direction D1 (i.e., the body of the suture staples is in a horizontal or inclined 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 embodiment of the present disclosure, since each suture staple is stacked along the first direction D1 in a manner similar to a staple, the length occupied by each suture staple in the suture staple channel 22 is greatly reduced, thereby increasing the number of suture staples per unit length of the suture staple channel 22, reducing the frequency of replacing surgical instruments during surgery, shortening the operation time, and reducing the cost of surgery.

[0050] For example, the end suturing mechanism 11 further includes a staple pusher sliding channel 24, in which a slidable staple pusher 30 is disposed. 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 extension direction of the staple pusher sliding channel 24 is not parallel to the sliding direction of the staple channel 22. The staple pusher 30 is configured to slide within the staple pusher sliding channel 24. This facilitates the staple pusher 30 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).

[0051] 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.

[0052] 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 staple channel 22, and the proximal end of the staple pusher sliding channel 24 is connected to the shaft channel 25. In this way, the staple pusher 30 can also slide in the shaft channel 25. For example, under the driving action of the drive rod 36 (described in detail below), the proximal end of the staple pusher 30 can move in the shaft channel 25 along the axis direction Z to a proximal position or a distal position.

[0053] For example, the end suturing mechanism 11 further includes a driving mechanism, which includes a driving rod 36 configured to drive the staple pusher 30. The driving rod 36 can move in the axial direction Z, thereby driving the staple pusher 30 to move back and forth in the axial direction Z. The distal end of the driving rod 36 is operably connected to the staple pusher 30, and the proximal end of the driving rod 36 is operably connected to the wrench 41, so that the wrench 41 can actuate the driving rod 36 to move the driving rod 36 along the axial direction Z. In the disclosed embodiment, the axial direction Z is parallel to the first direction D1, and the second direction D2 is perpendicular to the first direction.

[0054] The working principles of the wrench 41 , the driving rod 36 and the nail pusher 30 are described in detail below. Figure 4A and Figure 4B 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 5A and Figure 5B 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 6A and Figure 6B 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.

[0055] For example, Figure 4A and Figure 4B 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 5A and Figure 5B 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 6A and Figure 6BAs 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 suture staple 26 is bent into shape through the cooperation between the staple pusher 30 and the anvil 33 located below the staple pusher 30 (described in detail below), thereby completing the suturing operation. After the suture staple 26 is bent into shape, it is released by the elastic release member 34 (described in detail below). Then, 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 position. Figure 4A 、 Figure 4B status.

[0056] In the disclosed embodiment, since the staple pusher 30 pushes the suture staple 26 out of the suture staple channel 22 along the second direction D2 so that the suture staple 26 extends from the bottom 202P, and the second direction D2 is perpendicular to the first direction D1, the two staple legs are more easily observed by the operator after extending from the bottom 202P, which is beneficial for subsequent operators to perform suturing operations.

[0057] For example, Figure 2 As shown, the staple pusher includes a staple pusher member configured to move in a second direction D2 within the passage of the staple pusher 30 and operatively push the staple 26 to push the staple 26 out of the staple passage 22 along the second direction D2. The staple pusher member, for example, includes a finger-shaped staple pusher 31. The staple pusher 30 also includes a flexible connector connected between a drive rod 36 and the staple pusher member. The proximal end of the flexible connector is connected to the drive mechanism 14, and the distal end of the flexible connector is connected to the staple pusher member. The drive mechanism 14 (e.g., the drive rod 36) is configured to drive the staple pusher member via the flexible connector. The flexible connector, for example, includes a single-layer or multi-layer ribbon-shaped connector 32.

[0058] In the embodiment of the present disclosure, when the driving rod 36 moves distally, the driving rod 36 pushes the nail pushing piece 31 through the strip connecting piece 32, and the nail pushing piece 31 moves along the second direction D2 toward the bottom 202P, thereby pushing the suture staple 26 out of the suture staple channel 22 along the second direction; when the driving rod 36 continues to move distally, the driving rod 36 further pushes the nail pushing piece 31 through the strip connecting piece 32, and under the joint action of the anvil 33, the suture staple 26 is bent into shape, thereby completing the suturing.

[0059] See also Figure 2 The end suturing mechanism 11 further includes an anvil 33 located between the suture staple channel 22 and the bottom 202P of the bottom housing 202, and the anvil 33 is configured to cooperate with the staple pusher 30 to bend the suture staple. Figure 7 FIG. 1 is a schematic diagram of a partial structure of a surgical instrument according to an embodiment of the present disclosure. Figure 7As shown, for example, the anvil 33 includes an anvil body 330 connected to the bottom 202P and a pair of anvil forming members 332 extending from the anvil body 330. The suturing staples 26 are configured to bend in a vertical state around the pair of anvil forming members 332. Since the suturing staples 26 can be bent in a vertical state, the time from staple ejection to bending is shortened, thereby improving suturing efficiency.

[0060] Figure 8A FIG2 is a schematic diagram of the unbent state of the suture staple 26 according to the embodiment of the present disclosure. Figure 8B FIG. 2 is a schematic diagram of the bending state of the suture staple 26 according to the embodiment of the present disclosure. Figure 8A and Figure 8B As shown, when the staple pusher 30 pushes the staple 26 out of the staple channel 22, the staple 26 rests on the anvil forming surface of the anvil forming piece 332. Under the further pushing action of the staple pusher 30, the two legs of the staple 26 are bent and formed around a pair of anvil forming pieces 332.

[0061] For example, the extension direction of the anvil forming piece 332 is parallel to the first direction D1, and the pair of anvil forming pieces 332 are spaced apart from each other in the third direction D3, which is perpendicular to the first direction D1 and the second direction D2, thereby facilitating bending of the two legs of the suture staple 26.

[0062] See also Figure 2 For example, the end suturing mechanism 11 further includes an elastic release member 34 , at least part of which is located between the anvil 33 and the suture staple channel 22 in the second direction D2 , and the elastic release member 34 is configured to release the bent suture staple 26 . Figure 9 FIG. 3 is a schematic structural diagram of the elastic release member 34 according to an embodiment of the present disclosure. Figure 2 、 Figure 7 and Figure 9 As shown, 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 suture staple 26. Each elastic arm 342 is configured to elastically deform when the suture staple 26 and the staple pusher 30 move toward the bottom 202P along the second direction D2, and to release the bent suture staple 26 when the staple pusher 30 moves toward the top 201P along the second direction D2.

[0063] Figure 10 FIG. 1 is a schematic diagram of the principle of the elastic release member of the embodiment of the present disclosure. Figure 10As shown, the elastic arm 342 includes a first arm 351 and a second arm 352 connected to each other. The first arm 351 is connected to the release member body 340, the proximal end of the second arm 352 is connected to the first arm 351, and the distal end of the second arm 352 is a cantilevered end, which is configured to be movable clockwise or counterclockwise relative to the first arm 351. Since the elastic release member 34 is located on the back side of the suture staple 26 (i.e., the side close to the drive rod 36) and the pair of elastic arms 342 extend toward the suture staple 26, when the suture staple 26 and the staple pusher 30 move along the second direction D2 toward the bottom 202P, the elastic arm 342 is subjected to the squeezing force F of the suture staple 26 and / or the staple pusher 30, and is elastically deformed (for example, the second arm 352 moves clockwise to Figure 10 The first arm 351 is positioned at position b (the elastic deformation of the first arm 351 can be ignored here), thereby generating a certain elastic restoring force. When suturing is completed and the driving rod 36 is reset, the driving rod 36 moves proximally and pulls the staple pusher back through the strip-shaped connecting piece 321. At this time, when the staple pusher 31 moves in the second direction D2 toward the top 201P, the elastic arm 342 returns counterclockwise to position a under the action of the elastic restoring force, thereby kicking out or ejecting the bent staple 26. In other words, the elastic restoring force releases the staple 26, causing it to detach from the end suturing mechanism 11.

[0064] For example, Figure 2 and Figure 3 As 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.

[0065] 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.

[0066] For example, the biasing member 282 is located between the suture staple channel 22 and the bottom 202P of the end housing in the second direction D2, one end of the biasing member 282 is fixedly connected to the bottom 202P, and the other end of the biasing member 282 is connected to the anvil 281. This arrangement is conducive to the biasing member 282 generating a larger biasing force.

[0067] For example, reference Figure 2 and Figure 3 The 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.

[0068] For example, Figure 3 As shown, at least a portion of the staple pusher sliding channel 24 extends parallel to the second direction D2, allowing the staple pusher 30 (e.g., the staple pusher member) to slide along the second direction D2. The staple pusher sliding channel 24 includes multiple subchannels, including a first subchannel 241. The first subchannel 241 connects to the staple channel 22 and extends parallel to the second direction D2. The provision of the first subchannel 241 facilitates the accommodation of the staple pusher member. For example, if the second direction D2 is vertical, this facilitates the vertical movement of the staple pusher member.

[0069] For example, the nail pusher sliding channel 24 further includes a second sub-channel 242, which is connected to the shaft channel 25 and extends in a direction that intersects the first direction D1. 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.

[0070] The provision of second subchannel 242 not only facilitates the accommodation of the flexible connector but also prevents it from bursting through top 201P during distal movement. In some cases, if the extension direction of second subchannel 242 is set parallel to first direction D1, the flexible connector may burst through top 201P under high thrust from the drive rod, potentially damaging the device. By ensuring that the extension direction of second subchannel 242 and first direction D1 are at an angle less than 45 degrees, a high thrust can be provided to the flexible connector without damaging the device.

[0071] For example, the second subchannel 242 includes a proximal channel segment 242A and a distal channel segment 242B connected to each other, and the angle between the distal channel segment 242B and the first direction D1 is smaller than the angle between the proximal channel segment 242 and the first direction D1. For example, the angle between the distal channel segment 242B and the first direction D1 is 4 to 8 degrees, and the angle between the proximal channel segment 242 and the first direction D1 is 8 to 12 degrees.

[0072] For example, the nail pusher sliding channel 24 also includes a third sub-channel 243 connected between the first sub-channel 241 and the second sub-channel 242, and the third sub-channel 243 is configured to have an arc shape. By providing the arc-shaped third sub-channel 243, it is not only conducive to a smooth connection between the first sub-channel 241 and the second sub-channel 242, ensuring the smooth sliding of the flexible connector within the nail pusher sliding channel 24, but also ensures that the flexible connector will not be broken when bending along the channel direction. For example, the vertical distance from the connection between the second sub-channel 242 and the third sub-channel 243 to the top is the shortest. This vertical distance is, for example, 0.3 to 0.5 mm. In this way, it can be further ensured that the flexible connector has a greater force on the nail pusher.

[0073] In the surgical instrument suturing device and the surgical instrument provided in the above-mentioned embodiments, the staple pusher pushes the staple out of the staple channel in a second direction (e.g., vertical direction) perpendicular to the first direction (e.g., horizontal direction), allowing the staple to extend from the bottom of the end housing. This increases the number of staples accommodated in the staple channel, shortening surgical time and reducing surgical costs. Furthermore, it reduces the need for frequent instrument changes, improves operator convenience, and facilitates observation of staple removal, facilitating assessment of suturing effectiveness. Furthermore, it also makes the internal structure of the end suturing mechanism more compact, resulting in a compact and flexible overall structure.

[0074] In this article, there are several points to note:

[0075] (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.

[0076] (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.

[0077] (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: end housings, including top and bottom portions; and an end-stitching mechanism located in the end housing and comprising: a suture staple channel located between the top portion and the bottom portion and extending along a first direction, wherein a plurality of suture staples are stacked and arranged in the suture staple channel along the first direction; a staple pusher located between the staple channel and the top portion, the staple pusher being configured to push the staple out of the staple channel in a second direction so that the staple extends from the bottom portion, wherein the second direction is perpendicular to the first direction; An anvil is located between the staple channel and the bottom, and the anvil is configured to cooperate with the staple pusher to bend the staple.

2. The suturing device according to claim 1, wherein: The anvil includes an anvil body connected to the bottom and a pair of anvil forming pieces extending from the anvil body, and the suture staple is configured to bend around the pair of anvil forming pieces in a vertical state.

3. The suturing device according to claim 2, wherein: The anvil forming members extend in a direction parallel to the first direction. The pair of anvil forming members are spaced apart from each other in a third direction that is perpendicular to the first direction and the second direction.

4. The suturing device according to claim 1, wherein: The end suturing mechanism further includes an elastic release member, at least a portion of which is located between the anvil and the suturing staple channel in the second direction, and the elastic release member is configured to release the bent suturing staple.

5. The suturing device according to claim 4, wherein: The elastic release member includes a release member body connected to the anvil and a pair of elastic arms extending from the release member body toward the suturing staple, wherein the elastic arms are configured as follows: When the suture staple and the staple pusher move toward the bottom along the second direction, the suture staple and / or the staple pusher are squeezed and elastically deformed; and When the staple pusher moves toward the top along the second direction, the elastic arm releases the bent staple.

6. The suturing device according to claim 5, wherein: The elastic arm includes a first arm and a second arm connected to each other, the first arm is connected to the release member body, the proximal end of the second arm is connected to the first arm, and the distal end of the second arm is a cantilevered end, and the cantilevered end is configured to move clockwise or counterclockwise relative to the first arm.

7. The suturing device according to claim 1, wherein: The end suturing mechanism further includes a biasing assembly configured to apply a biasing force to the suture staples in the suture staple channel to keep the staple body of each suture staple arranged in a vertical state in the suture staple channel.

8. The suturing device according to claim 7, 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.

9. The suturing device according to claim 8, wherein: The biasing member is located between the suture nail channel and the bottom of the end shell in the second direction, one end of the biasing member is fixedly connected to the bottom, and the other end of the biasing member is connected to the nail support member.

10. The suturing device according to claim 1, wherein: The end suturing mechanism further includes: a staple pusher sliding channel, wherein the staple pusher sliding channel is located between the staple channel and the top portion and an extension direction thereof is not parallel to a sliding direction of the staple channel, and the staple pusher is configured to be slidable in the staple pusher sliding channel.

11. The suturing device according to claim 10, wherein: The suturing device also includes an axis assembly, which includes an axis channel; the distal end of the staple pusher sliding channel is connected to the suturing staple channel, and the proximal end of the staple pusher sliding channel is connected to the axis channel, and the staple pusher is also configured to be slidable in the axis channel.

12. The suturing device according to claim 10, wherein: An extension direction of at least a portion of the nail pusher sliding channel is parallel to the second direction, so that the nail pusher slides along the second direction.

13. The suturing device according to claim 10, 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 extending direction of the first sub-channel is parallel to the second direction.

14. The suturing device according to claim 13, 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 intersects with the first direction.

15. The suturing device according to claim 14, 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.

16. The suturing device according to claim 14, wherein: The vertical distance from the connection between the second sub-channel and the third sub-channel to the top is the shortest.

17. The suturing device according to any one of claims 1 to 16, wherein: The suturing device further comprises a driving mechanism configured to drive the staple pusher, wherein the staple pusher comprises a staple pusher and a flexible connecting member. The staple pusher is configured to move along the second direction and operatively push the staple to push the staple out of the staple channel along the second direction; The proximal end of the flexible connection piece is connected to the driving mechanism, the distal end of the flexible connection piece is connected to the nail pushing piece, and the driving mechanism is configured to drive the nail pushing piece to move via the flexible connection piece.

18. A surgical instrument comprising the suturing device according to any one of claims 1 to 17.

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