Nail abutting seat assembly and surgical instrument
By using a detachable anvil assembly, the problems of inconvenience and safety hazards in disassembling and assembling the anvil and the beak structure are solved by using guide posts and a coupling mechanism, achieving a safe and reliable connection, and making it suitable for medical staplers in minimally invasive surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU KEMAN MEDICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-01-15
- Publication Date
- 2026-04-21
AI Technical Summary
In existing minimally invasive surgical staplers, the connection between the anvil and the beak structure is inconvenient to disassemble and is at risk of damage, which may scratch the tissue and pose a safety hazard of tissue getting stuck in the gap.
The anvil assembly is detachably connected, and the positioning and interference fit between the beak and the anvil are achieved through a guide mechanism and a engagement mechanism. The guide mechanism includes a guide post and a guide groove, and the engagement mechanism can use a suction cup or a magnet to ensure a reliable connection.
It enables convenient assembly and disassembly of the anvil and the beak structure, avoiding the risk of damage to the component structure and tissue clamping, thus improving surgical safety.
Smart Images
Figure CN224140863U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of surgical instrument technology, specifically to anvil assembly and surgical instruments. Background Technology
[0002] Medical staplers are widely used in surgical procedures for wound suturing, internal tissue suturing, and cutting. Surgical procedures are increasingly trending towards minimally invasive surgery. In a narrow sense, minimally invasive surgery refers to surgery performed under endoscopy. Generally, only a few small holes need to be made in the patient's body to insert the medical stapler and auxiliary instruments into the patient's body to perform the surgery. This results in less trauma to the patient, and the patient can recover in a shorter time.
[0003] Existing medical staplers used in minimally invasive surgery, such as Figure 1 As shown, the device includes a stapler body 100 and an execution end 200 disposed at the distal end of the stapler body 100. The execution end 200 includes a staple cartridge seat 300 and a staple seat 400 disposed opposite to each other. One end of the staple cartridge seat 300 and the staple seat 400 are rotatably connected so that the staple cartridge seat 300 and the staple seat 400 have two states: open and closed. During the operation, the execution end is placed in the surgical position, and the size of the opening between the staple cartridge seat 300 and the staple seat 400 is adjusted to gradually clamp the tissue. Then, the staples in the staple cartridge seat are pushed towards the staple seat, so that the staples are sutured to the tissue.
[0004] In some surgeries, an olecranon structure 500 is needed at the front end of the anvil 400 for dissecting or separating tissues at the surgical site or for hooking certain tissues. The anvil is then slowly inserted into the narrow gap of the tissue or organ by using the olecranon structure to perform the anastomosis operation. Currently, the anvil and the olecranon structure are designed as a single unit. However, after prolonged use, the olecranon structure may be damaged, posing a risk of tissue abrasion during surgery. Therefore, the current design makes the connection between the anvil and the olecranon structure detachable for easy replacement and to ensure safe use during surgery. The existing connection method between the anvil and the olecranon structure is not only cumbersome to assemble and disassemble, but may also damage the component structure, thereby damaging the instrument. There is also a risk that tissue may be trapped in the gap between the anvil and the olecranon structure. Utility Model Content
[0005] To address the aforementioned problems, this utility model provides an anvil assembly and surgical instruments, which allow for easy assembly and disassembly of the components and are safe and reliable in use.
[0006] This utility model adopts the following technical solution: an anti-anchor assembly, including an anti-anchor and a beak structure detachably connected to the front end of the anti-anchor. The beak structure includes a beak and a guide mechanism and a coupling mechanism disposed on the beak. The guide mechanism is used to abut against the anti-anchor so that the beak and the anti-anchor are guided and positioned relative to each other. The coupling mechanism is used to interference fit the beak and the anti-anchor.
[0007] Optionally, the guiding mechanism includes a guide post disposed at the rear end of the beak, and the front end of the anvil is provided with a guide groove that matches the guide post. The beak and the anvil are positioned and abutted by the guide post and the guide groove.
[0008] Optionally, the guide post and the beak are an integral structure, and both the guide post and the guide groove are cross-shaped;
[0009] Optionally, the guide groove is provided along the length direction of the anvil, and the guide groove is open;
[0010] Optionally, the front end of the beak is a pointed tip, and the beak is made of plastic.
[0011] Optionally, the engagement mechanism includes at least two suction cups, the suction cups are fixed to the rear end of the beak, the front end of the anvil is provided with a suction groove for accommodating the suction cups, and when the beak engages with the anvil, the suction cups are attracted to the bottom surface of the suction groove.
[0012] Optionally, the engagement mechanism includes a magnet having a shape adapted to the rear end face of the beak, and the magnet having a slot adapted to the guide post. The magnet passes through the slot and is then fastened to the beak. The anvil is made of metal, and when the beak engages with the anvil, the magnet is magnetically attracted to the front end face of the anvil.
[0013] This invention also provides a surgical instrument, including the aforementioned anvil assembly.
[0014] The anvil assembly and surgical instrument provided by this utility model have the following beneficial effects: the anvil and the beak structure are detachably connected. The guide mechanism allows the beak and the anvil to be guided and positioned relative to each other. At the same time, the engagement mechanism allows the beak and the anvil to be interference-fitted, which facilitates the assembly and disassembly of the anvil and the beak structure. The assembly and disassembly process will not damage the part configuration and can also avoid the risk of tissue being trapped in the gap between the anvil and the beak structure. It is safe and reliable to use and has good application value. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of a stapler in the prior art;
[0017] Figure 2 This is an exploded structural diagram of Embodiment 1 of this utility model from a first perspective;
[0018] Figure 3 This is an exploded structural diagram of Embodiment 1 of the present invention from a second perspective;
[0019] Figure 4 This is an exploded structural diagram of Embodiment 1 of this utility model from a third-person perspective;
[0020] Figure 5 This is a schematic diagram of the assembly structure in Embodiment 1 of this utility model;
[0021] Figure 6 This is an exploded structural diagram of Embodiment 2 of this utility model from a first perspective;
[0022] Figure 7 This is an exploded structural diagram of Embodiment 2 of this utility model from a second perspective;
[0023] Figure 8 This is an exploded structural diagram of Embodiment 2 of this utility model from a third-person perspective;
[0024] Figure 9 This is an exploded structural diagram of Embodiment 2 of this utility model from a fourth perspective;
[0025] Figure 10 This is a schematic diagram of the assembly structure in Embodiment 2 of this utility model.
[0026] Icons: 100 - Anastomosing device body; 200 - Actuator end; 300 - Staple cartridge seat; 400 - Anvil seat; 500 - Beak structure;
[0027] 1-Beak; 2-Guide post; 3-Guide groove; 4-Suction cup; 5-Suction groove; 6-Magnetic component; 7-Socket. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0031] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0032] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0033] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0034] Unless otherwise explicitly specified and limited, terms such as "setup" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0036] Example 1
[0037] like Figures 2-5 As shown, the anvil assembly includes an anvil 400 and a beak structure 500 detachably connected to the front end of the anvil 400. The beak structure 500 includes a beak 1 and a guide mechanism and a engagement mechanism disposed on the beak 1. The guide mechanism is used to abut against the anvil 400 to guide and position the beak 1 relative to the anvil 400. The engagement mechanism is used to interference fit the beak 1 and the anvil 400.
[0038] The guiding mechanism includes a guide post 2, which is located at the rear end of the beak 1. The guide post 2 and the beak 1 are an integral structure. The front end of the anvil seat 400 is provided with a guide groove 3 that matches the guide post 2. The beak 1 and the anvil seat 400 are positioned and abutted by the guide post 2 and the guide groove 3. The guide post 2 and the guide groove 3 can be used to pre-position the beak 1 and the anvil seat 400, which is convenient for assembly.
[0039] Both guide post 2 and guide groove 3 are cross-shaped. It should be noted that the shapes of guide post 2 and guide groove 3 can be set according to the actual situation. Guide groove 3 is set along the length of the anvil seat 400, and guide groove 3 is open to facilitate the insertion of guide post 2.
[0040] The front end of Eagle Beak 1 is a pointed tip, and Eagle Beak 1 is made of plastic.
[0041] The engagement mechanism includes at least two suction cups 4, which are fixed to the rear end of the beak 1. The front end of the anvil 400 is provided with a suction groove 5 for accommodating the suction cups 4. When the beak 1 and the anvil 400 are engaged, the suction cups 4 are attracted to the bottom surface of the suction groove 5. By providing the suction groove 5 for accommodating the suction cups 4, the suction cups 4 can be placed into the suction groove 5, ensuring that there is no gap between the beak 1 and the end face of the anvil 400.
[0042] The disassembly and assembly process of Embodiment 1 of this utility model is as follows: When assembly is required, the beak 1 is guided and positioned into the guide groove 3 of the anvil seat 400 by the guide post 2, so that the beak 1 and the anvil seat 400 are pre-positioned and engaged. At the same time, during the engagement of the beak 1 and the anvil seat 400, the suction cup 4 is placed into the suction groove 5. After the beak 1 and the anvil seat 400 are engaged, the suction cup 4 and the suction groove 5 are interference-fitted, and the suction cup 4 can be tightly attracted to the bottom surface of the suction groove 5, so that the beak 1 and the anvil seat 400 can be tightly engaged, ensuring that the end faces of the beak 1 and the anvil seat 400 fit together without gaps and the connection is reliable. This can prevent the risk of tissue drilling into the gap between the anvil seat 400 and the beak 1 during surgery. When disassembly is required, the beak 1 can be easily pulled out in the opposite direction of the engagement of the beak 1 and the anvil seat 400, so disassembly and assembly are convenient and there is no risk of damaging the structure of the parts.
[0043] Example 2
[0044] like Figures 6-10 As shown, the difference between this second embodiment and the first embodiment is that the joining mechanism includes a magnet 6, which has a shape that matches the rear end face of the beak 1. The magnet 6 has an insertion port 7 that matches the guide post 2. The magnet 6 passes through the insertion port 7 and is then fastened to the beak 1. The anvil 400 is made of metal, and when the beak 1 and the anvil 400 are joined, the magnet 6 and the front end face of the anvil 400 are magnetically attracted to each other.
[0045] It should be noted that in this embodiment, the magnet 6 and the beak 1 are fastened together by adhesive, but they can also be fastened by other connection methods; the magnet 6 can also be embedded in the rear end face of the beak 1, as long as it can achieve a tight magnetic attraction between the beak 1 and the anvil 400.
[0046] The disassembly and assembly process of Embodiment 2 of this utility model is as follows: When assembly is required, the beak 1 is guided and positioned into the guide groove 3 of the anvil seat 400 by the guide post 2, so that the beak 1 and the anvil seat 400 are pre-positioned and engaged. At the same time, during the engagement of the beak 1 and the anvil seat 400, the magnet 6, which is fastened to the beak 1, can magnetically attract the front end face of the anvil seat 400, so that the beak 1 and the anvil seat 400 can be tightly engaged, and the end face of the beak 1 and the anvil seat 400 can be seamlessly fitted, and the connection is reliable. This can prevent the risk of tissue drilling into the gap between the anvil seat 400 and the beak 1 during the operation. When disassembly is required, the beak 1 can be easily pulled out in the opposite direction of the engagement of the beak 1 and the anvil seat 400, so disassembly and assembly are convenient and there is no risk of damaging the structure of the parts.
[0047] This invention also provides a surgical instrument, including the aforementioned anvil assembly.
[0048] The arrows in the diagram indicate the direction in which the eagle's beak joins.
[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A chock assembly comprising a chock (400) and a beak (500) removably connected to a front end of the chock (400), characterized in that: The beak structure (500) includes a beak (1) and a guide mechanism and a coupling mechanism disposed on the beak (1). The guide mechanism is used to abut against the anvil (400) to guide and position the beak (1) relative to the anvil (400). The coupling mechanism is used to interference fit the beak (1) with the anvil (400).
2. The anchor seat assembly of claim 1, wherein: The guiding mechanism includes a guide post (2), which is located at the rear end of the beak (1). The front end of the anvil seat (400) is provided with a guide groove (3) that matches the guide post (2). The beak (1) and the anvil seat (400) are positioned and abutted by the guide post (2) and the guide groove (3).
3. The anchor seat assembly of claim 2, wherein: The guide post (2) and the beak (1) are an integral structure, and both the guide post (2) and the guide groove (3) are cross-shaped.
4. The anchor seat assembly of claim 2, wherein: The guide groove (3) is provided along the length direction of the anvil (400), and the guide groove (3) is open.
5. The strike plate assembly of any one of claims 2-4, wherein: The front end of the beak (1) is a pointed tip, and the beak (1) is made of plastic.
6. The anchor seat assembly of claim 5, wherein: The engagement mechanism includes at least two suction cups (4), which are fixed to the rear end of the beak (1). The front end of the anvil (400) is provided with a suction groove (5) for accommodating the suction cups (4), and when the beak (1) engages with the anvil (400), the suction cups (4) are attracted to the bottom surface of the suction groove (5).
7. The anchor seat assembly of claim 5, wherein: The joining mechanism includes a magnet (6) having a shape adapted to the rear end face of the beak (1). The magnet (6) has a socket (7) adapted to the guide post (2). The magnet (6) passes through the guide post (2) through the socket (7) and is fastened to the beak (1). The anvil (400) is made of metal, and when the beak (1) and the anvil (400) are joined, the magnet (6) is magnetically attracted to the front end face of the anvil (400).
8. A surgical instrument characterized by: Includes the anvil assembly as described in any one of claims 1-7.