Nail bin assembly, executing mechanism and surgical anastomat
By incorporating wave-shaped structures on the staple beams and staple actuators of the anastomotic staples, the problem of loose staple closure was solved, resulting in better tissue anastomosis and stability, and reducing anastomotic complications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-28
AI Technical Summary
In existing surgical staplers, the staples do not close tightly enough, which can easily lead to serious complications such as leakage of fluid, air, and bleeding at the anastomosis site.
The staple beam of the staple design has a first crest structure protruding toward the staple leg, and a second crest structure supporting this crest is set on the staple actuator to reduce the gap between the staple leg and the staple beam, thereby enhancing the stability and structural support of the staple.
It effectively reduces complications such as anastomotic leakage, air leakage, and bleeding, and improves the anastomotic effect.
Smart Images
Figure CN224166350U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, specifically to a staple cartridge assembly, an actuator, and a surgical stapler. Background Technology
[0002] Surgical staplers generally consist of an instrument platform, an actuator, and a slender rod mounted distal to the instrument platform. The actuator includes a cartridge assembly and an anvil, positioned opposite each other. The cartridge assembly comprises a body, staples housed within staple holes in the body, and a staple drive. When the stapler is fired, the staple drive is actuated and moves along the staple holes in the body, pushing the staple outwards. After penetrating the tissue, the staple closes on the surface of the anvil and disengages from the staple hole, securing itself to the tissue. After the staple closes, the tissue is contained within the closed space formed by the staple legs and struts. If the staple closure is not tight enough, serious complications such as anastomotic leakage, anastomotic air leakage, and stapler bleeding can easily occur. Utility Model Content
[0003] To address the problems in the prior art, the purpose of this application is to provide a staple cartridge assembly, an actuator, and a surgical stapler that reduces the closed space defined by the staple legs and staple beams after the staples have been closed and formed, thereby providing better tissue anastomosis results.
[0004] The first aspect of this application provides a pinning device component, including:
[0005] The staple includes interconnected staple legs and staple beam, the staple beam having a first crest structure that protrudes toward one side of the staple legs;
[0006] A nail driver includes a nail support portion, which is configured to support a nail beam for a mating nail, and a second crest structure is provided at a position of the nail support portion corresponding to the first crest structure.
[0007] After the staple driver drives the staples to be ejected, the staples bend and close on the forming structure of the stapler. The first and second wave peak structures are used to reduce the distance between the highest point of the closed staple leg and the highest point of the staple beam.
[0008] In some embodiments, the first crest structure is a first arc-shaped structure that continuously protrudes from the side of the nail beam toward the nail leg, and the second crest structure is a second arc-shaped structure whose shape is adapted to the first crest structure.
[0009] In some embodiments, the first crest structure includes at least two first sub-cresces and a first trough connecting two adjacent first sub-cresces, the first sub-cresces being arranged axially, and the second crest structure includes at least two second sub-cresces corresponding to the first sub-cresces and a second trough corresponding to the first trough.
[0010] In some embodiments, the first crest structure includes two first sub-crests and a first trough. After the anastomosis staple is configured to close and form, the two staple feet and staple beam of the staple define two closed spaces, and the two first sub-crests are located in the two closed spaces respectively.
[0011] In some embodiments, the nail support includes a mounting groove disposed on the side of the nail driver facing the mating nail, and a second crest structure is disposed at the bottom of the mounting groove.
[0012] In some embodiments, an axial displacement limiting structure is provided in the mounting groove, the axial displacement limiting structure being located at the distal end and / or proximal end of the nail beam.
[0013] In some embodiments, after the anastomotic staple is configured to be closed and formed, the two feet of the staple and the staple beam form two closed structures, each of which is a kidney-shaped structure.
[0014] In some embodiments, the first peak structure and the second peak structure are adapted to each other in shape and are fitted together.
[0015] In some embodiments, the staple cartridge assembly further includes a staple cartridge, which includes a body and a plurality of staple holes formed therein, wherein staples are movably placed in the corresponding staple holes, and a staple driver is supported below the corresponding staple and assembled in the staple cartridge.
[0016] A second aspect of this application also provides an implementing agency, comprising:
[0017] Anvil, comprising multiple shaped structures;
[0018] The aforementioned staple cartridge assembly is hinged to the staple anvil.
[0019] A third aspect of this application also provides a surgical stapler, including the staple cartridge assembly of the first aspect or the actuator of the second aspect.
[0020] The staple cartridge assembly, actuator, and surgical stapler provided in this application have the following advantages:
[0021] This application designs the structure of the anastomotic staple and the staple actuator to give the staple beam a first peak structure protruding towards the staple leg, reducing the distance between the highest point of the staple leg and the highest point of the staple beam during closure. This reduces the closed space defined by the staple leg and staple beam after the anastomotic staple is closed, providing better tissue anastomosis. Furthermore, the staple actuator has a second peak structure that supports the first peak structure, providing stable support for the anastomotic staple and improving structural stability during staple ejection and closure. Therefore, by adopting the staple actuator structure of this application, the occurrence of serious complications such as anastomotic leakage, anastomotic air leakage, and anastomotic device bleeding is effectively reduced after the anastomotic staple is closed. Attached Figure Description
[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.
[0023] Figure 1 This is a schematic diagram of the structure of the mating staple and staple driver according to an embodiment of this application;
[0024] Figure 2 This is a schematic diagram of the structure of a nail driver according to an embodiment of this application;
[0025] Figure 3 This is a schematic diagram of the engagement of the staple and the staple driver when the staple is not closed, according to an embodiment of this application;
[0026] Figure 4 This is a schematic diagram of the engagement of the staple and the staple driver after the staple is closed, according to an embodiment of this application;
[0027] Figure 5 This is a top view of a nail driver according to an embodiment of this application;
[0028] Figure 6 yes Figure 5 Enlarged view of section AA;
[0029] Figure 7 This is a schematic diagram of the engagement of a staple and a staple driver according to an embodiment of this application;
[0030] Figure 8 This is a schematic diagram of the structure of the mating staple and staple driver according to another embodiment of this application;
[0031] Figure 9 This is a schematic diagram of the structure of a nail driver according to another embodiment of this application;
[0032] Figure 10 This is a schematic diagram of the engagement of the staple and the staple driver after the staple is closed, according to another embodiment of this application;
[0033] Figure 11 This is a cross-sectional view of a nail driver according to another embodiment of this application;
[0034] Figure 12 This is a schematic diagram of the structure of the mating staple and staple driver in another embodiment of this application. Detailed Implementation
[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted. The words “or” and “or” in the specification may mean “and” or “or”. Although the terms “upper,” “lower,” “between,” etc., may be used in this specification to describe different exemplary features and elements of this application, these terms are used herein only for convenience, such as the orientation according to the examples described in the drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this application. Although “first” or “second,” etc., are used in this specification to denote certain features, they are only for indication of function and not as a limitation on the number or importance of specific features. In this application, “axial” refers to the direction of the elongated axis of the stapler, which is the direction from the distal end to the proximal end of the stapler or from the proximal end to the distal end of the stapler, corresponding to… Figure 4 and Figure 5 In the direction S1, "horizontal" refers to the width direction of the staple cartridge component, corresponding to... Figure 5 In the direction S2, "vertical" refers to the height direction of the stapling cartridge component, corresponding to... Figure 4 In the direction of D, "distal" and "proximal" are relative to the operator. "Distal" is the end away from the operator, that is, the end closer to the surgical site, and "proximal" is the end closer to the operator.
[0036] To avoid serious complications such as fluid leakage, air leakage, and stapler bleeding after tissue anastomosis, this application provides a staple cartridge assembly and an actuator including the staple cartridge assembly. The staple cartridge assembly includes staples and staple actuators, and also includes a staple cartridge that houses the staples and staple actuators. The staple cartridge includes a body and multiple staple holes formed in the body. The staples are movably disposed in their corresponding staple holes, and the staple actuators are supported below the corresponding staples and assembled in the staple cartridge. The actuator includes a staple anvil hinged to the staple cartridge assembly. The staple anvil has multiple forming structures, such as multiple staple forming grooves. When the stapler is fired, the staple actuator drives the staples to be ejected, and the staples bend and close on the forming structures of the staple anvil to suture onto the tissue.
[0037] Figures 1-7 This illustration shows the structure of the mating staple and staple driver according to an embodiment of this application. (See diagram below.) Figures 1-7As shown, the staple 10 includes a staple leg 1 and a staple beam 2 connected to each other. The staple beam 2 has a first crest structure 21, which protrudes towards the staple leg 1. The staple driver 50 includes one or more staple support portions 5, each staple support portion 5 supporting a corresponding staple beam 2 of the staple 10, and a second crest structure 61 is provided at the position of the staple support portion 5 corresponding to the first crest structure 21. When the staple driver 50 has multiple staple support portions 5, the staple driver 50 also includes a connecting portion connecting the staple support portions 5. In some embodiments, all staple support portions 5 are provided with a second crest structure 61 supporting the first crest structure 21; in other embodiments, some staple support portions 5 support staples 10 with the first crest structure 21, while other staple support portions 5 may be provided with staples 10 whose staple beam 2 has a straight structure, and the staple support portions 5 supporting staples 10 with the first crest structure 21 are provided with the second crest structure 61.
[0038] Figure 3 This is a schematic diagram of the engagement of the staple and the staple driver when the staple 10 is not closed, according to an embodiment of this application. Figure 4 This is a schematic diagram illustrating the engagement of the stapler and staple driver after the stapler 10 has closed, according to an embodiment of this application. Figure 3 and Figure 4 As shown, in the initial state, i.e., when the stapler is not fired, the legs 1 of the staple 10 extend away from the staple driver 50. When the stapler is fired, the staple 10 is driven by the staple driver 50 to move towards the anvil. The legs 1 of the staple 10 bend inward under the action of the staple forming groove of the anvil, and the tips 11 of the legs 1 move towards the staple beam 2. After the staple 10 is closed and formed, the two legs 1 of the staple 10 and the staple beam 2 form two closed structures. Each closed structure is a kidney-shaped structure, and each closed structure defines a closed space 3. That is, the legs 1 and the staple beam 2 surround to form a closed space 3 to accommodate tissue. Here, the kidney-shaped structure means that the closed structure is elliptical in shape, the upper and lower sides of the closed structure are asymmetrical, and the lower side has a curved arc that protrudes upward (similar to the hilum of the kidney). After the anastomotic staples 10 are closed and formed, each staple leg 1 bends to form a third peak structure 12. Since the staple beam 2 has a first peak structure 21 protruding towards the staple leg 1, the longitudinal distance D (height direction) between the highest point of the closed staple leg 1 (i.e., the apex of the third peak structure 12) and the highest point of the staple beam 2 (i.e., the apex of the first peak structure 21) is reduced. This reduces the closing gap between the apex of the third peak structure 12 and the staple beam 2, thereby reducing the closed space 3 defined by the staple leg 1 and staple beam 2 after the anastomotic staples 10 are closed and formed, providing a better tissue anastomosis effect. Simultaneously, combined with... Figures 3-6The staple driver 50 has a second peak structure 61 that supports the first peak structure 21, providing stable support for the staple 10. During the closing process of the staple 10, the first peak structure 21 will not deform, which helps to improve the structural stability when the staple 10 is pushed out and during the closing process. Therefore, by adopting the structure of the staple driver 50 of this application, after the staple is formed, the occurrence of serious complications such as anastomotic leakage, anastomotic air leakage, and anastomotic device bleeding can be effectively reduced.
[0039] In this embodiment, the shapes of the first crest structure 21 and the second crest structure 61 are adapted to each other, and the first crest structure 21 and the second crest structure 61 are fitted together, so that the second crest structure 61 provides more stable support to the first crest structure 21, ensuring that the staple beam 2 is not easily deformed during the closing and forming process of the staple 10. Figures 4-7 As shown, in this embodiment, the first peak structure 21 is a first arc-shaped structure that continuously protrudes from the nail beam 2 toward the nail leg 1, and the second peak structure 61 is a second arc-shaped structure whose shape is adapted to the first peak structure 21. The first arc-shaped structure has a smooth transition, and the second arc-shaped structure adapts to the first arc-shaped structure so that the nail support 5 fits and supports the first arc-shaped structure. Optionally, the highest point of the first arc-shaped structure is basically located at the center of the nail beam 2 in the axial direction. After the matching nail 10 is closed, the nail leg 1 and the nail beam 2 form two basically symmetrical closed spaces 3 around it. In other embodiments, the highest point of the first arc-shaped structure can also be set more towards the far end or more towards the near end to adapt to the usage requirements of different scenarios.
[0040] In this embodiment, the nail support 5 includes a mounting groove 6 located on the side of the nail driver 50 facing the matching nail 10. A second wave crest structure 61 is located at the bottom of the mounting groove 6, meaning the bottom wall of the mounting groove 6 is an arc-shaped surface adapted to the shape of the first wave crest structure 21. The nail beam 2 of the matching nail 10 is partially located within the mounting groove 6. The engagement between the side wall of the mounting groove 6 and the nail beam 2 prevents the nail beam 2 from shifting laterally relative to the nail driver 50 when the matching nail 10 is not fully closed.
[0041] In other embodiments, the surface of the nail support 5 facing the staple 10 is a plane without the mounting groove 6. This plane is an arc-shaped surface adapted to the shape of the first crest structure 21. This method is also within the scope of protection of this application. Lateral displacement limiting structures can be provided on the inner and / or outer sides of the surface of the nail support 5 facing the staple 10. The lateral displacement limiting structure is, for example, a protrusion provided on the inner and / or outer sides of the nail support 5. The lateral displacement limiting structure can prevent the staple beam 2 from shifting laterally relative to the staple driver 50 when the staple 10 is not closed and formed. The distal and / or proximal ends of the surface of the nail support 5 facing the staple 10 can also be provided with axial displacement limiting structures to further prevent the staple 10 from shifting axially relative to the staple driver 50 before it is closed and formed. At the same time, by providing axial displacement limiting structures and / or lateral displacement limiting structures, it is convenient to provide axial and / or lateral positioning for the staple when assembling the staple and the staple driver, thereby improving the convenience of staple installation.
[0042] Figures 8-11 This illustration shows the engagement of a stapler and a staple driver according to another embodiment of this application. Figures 8-11 As shown, the difference between this embodiment and the previous embodiment is that the first wave crest structure 21 includes at least two first sub-wave crests 211 and a first trough 212 connecting two adjacent first sub-wave crests 211. The first sub-wave crests 211 are arranged axially. The second wave crest structure 61 includes at least two second sub-wave crests 611 corresponding to the first sub-wave crests 211 and a second trough 612 corresponding to the first trough 212. This embodiment uses the first wave crest structure 21 including two first sub-wave crests 211 as an example. It can be understood that the number of first sub-wave crests 211 can be selected as needed, and is not limited to two. A first trough 212 is provided between every two adjacent first sub-wave crests 211. The number of second sub-wave crests 611 in the second wave crest structure 61 is the same as the number of first sub-wave crests 211, so that the shape of the second wave crest structure 61 is adapted to the shape of the first wave crest structure 21. The shape and size of the multiple first sub-wave crests 211 can all be the same, or the shape and size of different first sub-wave crests 211 can be different. In this embodiment, the second wave crest structure 61 can be disposed on the bottom surface of the mounting groove 6. In other embodiments, when the side of the nail support portion 5 facing the mating nail 10 is flat, the second wave crest structure 61 is disposed directly on the surface of the nail support portion 5.
[0043] like Figure 10 and Figure 11As shown, the first peak structure 21 includes two first sub-peaks 211 and a first trough 212. Correspondingly, the second peak structure 61 includes two second sub-peaks 611 and a second trough 612. After the anastomotic staple 10 is closed and formed, the two staple legs 1 of the anastomotic staple 10 and the staple beam 2 form two closed structures. Each closed structure is a kidney-shaped structure. The two first sub-peaks 211 reduce the distance between the highest point of the closed staple leg 1 (i.e., the apex of the third peak structure 12) and the highest point of the staple beam 2 (i.e., the apex of the first sub-peak 211). Each closed structure defines a closed space 3. That is, the two staple legs of the anastomotic staple 10 and the staple beam 2 define two closed spaces 3 for accommodating tissue. The two first sub-peaks 211 are located in the two closed spaces 3 respectively. Therefore, within each closed space 3, the apex of the third peak structure 12 is substantially opposite to the apex of the first sub-peak 211, thereby further reducing the closing gap at the apex of the third peak structure 12, and further reducing the closed space 3 of the anastomotic staple 10, providing a better tissue anastomosis effect. Furthermore, since the first peak structure 21 includes a raised first sub-peak 211 and a recessed first trough 212, and the second peak structure 61 includes a corresponding second sub-peak 611 and a second trough 612, the first peak structure 21 and the second peak structure 61 form a concave-convex fit, which can constrain the axial displacement of the anastomotic staple 10 in the staple hole, preventing axial displacement relative to the staple driver 50 before the anastomotic staple 10 is fully closed.
[0044] Figure 12 This is a schematic diagram illustrating the cooperation between the matching staple and the staple driver according to another embodiment of this application. Figure 12As shown, the difference between this embodiment and the previous embodiment is that an axial displacement limiting structure 7 is provided in the mounting groove 6. The axial displacement limiting structure 7 is located at the far end and / or the near end of the nail beam 2. The axial displacement limiting structure 7 includes, for example, a protrusion provided at the far end and / or the near end of the mounting groove 6. The axial displacement limiting structure 7 can further prevent the matching nail 10 from shifting axially relative to the nail driver 50 before it is closed and formed. This embodiment schematically illustrates that the axial displacement limiting structure 7 is provided at both the distal and proximal ends of the mounting groove 6, that is, an axial displacement limiting structure 7 is provided at both the distal and proximal ends of the nail beam 2 to axially limit both the distal and proximal ends of the mating nail 10. The axial displacement limiting structure 7 provided at the distal end of the mounting groove 6 is located on the distal side of the nail beam 2, and the height of the axial displacement limiting structure 7 to the bottom surface of the nail driver 50 is equal to or higher than the height of the distal sidewall of the mounting groove 6 to the bottom surface of the nail driver 50. The distal end of the axial displacement limiting structure 7 does not protrude beyond the distal end of the mounting groove 6. The axial displacement limiting structure 7 provided at the proximal end of the mounting groove 6 is located on the proximal side of the nail beam 2, and the height of the axial displacement limiting structure 7 to the bottom surface of the nail driver 50 is greater than or equal to the height of the proximal sidewall of the mounting groove 6 to the bottom surface of the nail driver 50. The proximal end of the axial displacement limiting structure 7 does not protrude beyond the proximal end of the mounting groove 6. In other alternative embodiments, the axial displacement limiting structure 7 may be provided only at the distal end of the mounting groove 6, or only at the proximal end of the mounting groove 6, as needed. This axial displacement limiting structure 7 can be combined with... Figures 1-7 In the embodiment shown, the first and second peak structures are combined. In other embodiments, the axial displacement limiting structure 7 can also be combined with... Figures 8-11 In the illustrated embodiment, the first peak structure and the second peak structure are combined, that is, in Figures 8-11 The axial displacement limiting structure 7 provided at the distal and / or proximal ends of the mounting groove 6 of the nail driver 50 shown is also within the scope of protection of this application. By providing the axial displacement limiting structure, the axial positioning of the staple can be conveniently provided during the assembly of the staple and the nail driver, thereby improving the ease of staple installation.
[0045] This application also provides a surgical anastomosis device, including an instrument platform, an actuator, and an elongated rod on the distal end of the instrument platform to which the actuator is mounted. The actuator includes a staple cartridge assembly and an anvil disposed opposite each other. The staple cartridge assembly can adopt the structure of any of the above embodiments and can obtain the above-mentioned beneficial effects, effectively improving the anastomosis surgery results.
[0046] In summary, the staple cartridge assembly, actuator, and surgical stapler provided in this application have the following advantages:
[0047] This application designs the structure of the anastomotic staple and the staple actuator to give the staple beam a first peak structure protruding towards the staple leg, reducing the distance between the highest point of the staple leg and the highest point of the staple beam during closure. This reduces the closed space defined by the staple leg and staple beam after the anastomotic staple is closed, providing better tissue anastomosis. Furthermore, the staple actuator has a second peak structure that supports the first peak structure, providing stable support for the anastomotic staple and improving structural stability during staple ejection and closure. Therefore, by adopting the staple actuator structure of this application, the occurrence of serious complications such as anastomotic leakage, anastomotic air leakage, and anastomotic device bleeding is effectively reduced after the anastomotic staple is closed.
[0048] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.
Claims
1. A staple cartridge assembly, characterized in that, include: A stapler includes interconnected staple legs and a staple beam, the staple beam having a first crest structure that protrudes toward one side of the staple legs; A nail driver includes a nail support portion, the nail support portion being configured to support a nail beam of the matching nail, and the nail support portion having a second crest structure at a position corresponding to the first crest structure; Wherein, after the staple driver drives the staple to be ejected, the staple bends and closes on the forming structure of the stapler, and the first wave crest structure and the second wave crest structure are used to reduce the distance between the highest point of the closed-formed staple leg and the highest point of the staple beam.
2. The staple cartridge assembly according to claim 1, characterized in that, The first wave crest structure is a first arc-shaped structure that continuously protrudes from the side of the nail beam toward the nail leg, and the second wave crest structure is a second arc-shaped structure whose shape is adapted to the first wave crest structure.
3. The staple cartridge assembly according to claim 1, characterized in that, The first peak structure includes at least two first sub-peaks and a first trough connecting two adjacent sub-peaks, the first sub-peaks being arranged axially, and the second peak structure includes at least two second sub-peaks corresponding to the first sub-peaks and a second trough corresponding to the first trough.
4. The staple cartridge assembly according to claim 3, characterized in that, The first crest structure includes two first sub-crests and a first trough. After the anastomosis staple is configured to be closed and formed, the two staple feet of the anastomosis staple and the staple beam define two closed spaces, and the two first sub-crests are respectively located in the two closed spaces.
5. The staple cartridge assembly according to claim 1, characterized in that, The nail support includes a mounting groove on the side of the nail driver facing the staple, and the second crest structure is located at the bottom of the mounting groove.
6. The staple cartridge assembly according to claim 5, characterized in that, An axial displacement limiting structure is provided in the mounting groove, and the axial displacement limiting structure is located at the distal end and / or the proximal end of the nail beam.
7. The staple cartridge assembly according to claim 1, characterized in that, When the anastomotic staple is configured to be closed and formed, the two feet of the staple and the staple beam form two closed structures, each of which is a kidney-shaped structure.
8. The staple cartridge assembly according to claim 1, characterized in that, Also includes: The staple cartridge includes a body and a plurality of staple holes formed in the body, wherein the staples are movably placed in the corresponding staple holes, and the staple driver is supported below the corresponding staple and assembled in the staple cartridge.
9. An actuator, characterized in that, include: Anvil, comprising multiple shaped structures; The staple cartridge assembly as described in any one of claims 1 to 8 is hinged to the anvil.
10. A surgical stapler, characterized in that, Includes the staple cartridge assembly as described in any one of claims 1 to 8 or the actuator as described in claim 9.