Stapler assembly capable of being combined in expanded mode
By designing scalable and modular stapler assemblies, the problem of fixed-length stapler assemblies being unable to adapt to different patient anatomy structures was solved, enabling flexible adjustments and efficient surgical procedures while reducing instrument waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SURGAID MEDICAL XIAMEN CO LTD
- Filing Date
- 2023-12-15
- Publication Date
- 2026-04-28
AI Technical Summary
The current stapler components have a fixed length, which cannot be flexibly adjusted according to the differences in the patient's anatomical structure, resulting in inconvenience in operation and waste of equipment.
Design a scalable and combinable stapler assembly, including a detachable staple cartridge, an anvil, and an extension assembly. The assembly's adjustable length is achieved through guide posts and limiting grooves, and cutting accuracy is ensured by a cutting stop.
It enables flexible adjustment of the stapler component length, improves surgical efficiency, avoids instrument waste, simplifies the production process, and enhances operational convenience and safety.
Smart Images
Figure CN224166345U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, and more particularly to a scalable and combinable anastomosis device assembly. Background Technology
[0002] Currently, the stapler components used in the market, including the staple cartridge, staple cartridge holder, and anvil, are all integrated designs with a fixed length that cannot be extended as needed. It is usually necessary to pre-determine the required length of the stapler component.
[0003] Because the length of stapler assemblies used in the market is fixed, surgeons need to pre-select the appropriate assembly length based on anticipated surgical needs. Using stapler assemblies with expandable combined lengths ensures that the assembly plays a vital role in the surgery and simplifies the manufacturing process. In clinical use, due to differences in each patient's anatomy, fixed-length stapler assemblies may limit the surgeon's operational flexibility and may lead to unnecessary instrument waste due to insufficient anastomosis length. Utility Model Content
[0004] The purpose of this invention is to provide an expandable and combinable stapler assembly with a more flexible assembly structure, which can adapt to more clinical needs and improve surgical efficiency and ease of operation.
[0005] This utility model is achieved through the following technical solution: an expandable and combinable stapler assembly, which includes a staple cartridge seat and an anvil seat hinged at the rear end, with a staple cartridge connected to the staple cartridge seat; the staple cartridge has a cutting groove in the middle.
[0006] The staple cartridge seat is provided with a staple and a staple pusher for pushing the staple, and the staple outlet is provided on the mating surface of the staple cartridge seat.
[0007] By manipulating the stapler, the staple cartridge seat and the staple seat can be closed together, and the cutting blade can be controlled to slide and cut the tissue in the cutting groove in the front and back direction, while pushing the staple pusher to push out the staples.
[0008] The front end of the staple cartridge is provided with a cutting stop that is detachably connected to the staple cartridge.
[0009] It also features extension components, which include:
[0010] At least one anvil fitting can be sequentially detached and connected between the expansion assembly and the anvil fitting to form an integral unit with an anvil fitting function;
[0011] At least one staple cartridge holder accessory is sequentially detachable and detachable from the front end of the staple cartridge holder to form a complete unit with staple cartridge holder functionality; and
[0012] At least one staple cartridge accessory can be installed on a corresponding staple cartridge base accessory and together with the staple cartridge, form a whole with staple cartridge function.
[0013] Compared with previous technologies, the beneficial effects of this utility model are as follows:
[0014] 1. The stapler components can be pre-assembled to meet clinical needs based on the different tissue lengths of each patient, and the length can be adjusted at any time according to the actual surgical requirements, which is highly flexible and applicable to more tissue needs.
[0015] 2. In surgeries where the length of the stapler assembly needs to be adjusted, it can avoid instrument waste or shortage due to unsuitable length, thereby improving surgical efficiency.
[0016] 3. This utility model can pre-select and verify the length according to the predetermined surgical requirements, and the length of the accessories of the extension component is relatively shorter, the production process is simpler, and the dimensional accuracy is easier to control. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a structural diagram illustrating the connection and disassembly of the anvil fitting with other anvil fittings or with the anvil fitting.
[0019] Figure 3 A structural diagram showing the connection and disassembly of a staple cartridge holder accessory with or with a staple cartridge holder.
[0020] Figure 4 A schematic diagram showing the disassembly and assembly connection of the staple cartridge fittings and the staple cartridge base fittings;
[0021] Figure 5 Assembly diagrams of various sizes of stapler components;
[0022] Figure 6 Schematic diagrams of various sizes of stapler assemblies;
[0023] Figure 7 This is a structural exploded view of the present invention without the staple cartridge and staple cartridge accessories assembled.
[0024] Figure 8 This is a structural diagram of the present invention when the staple cartridge and staple cartridge accessories are disassembled;
[0025] Figure 9 This is a cross-sectional structural diagram of a staple cartridge holder or staple cartridge holder accessories.
[0026] Labeling Explanation: 11 Attachment cartridge holder, 111 Stapling staple, 112 Attachment pusher, 12 Anchor staple holder, 13 Attachment cartridge, 14 Cutting groove, 15 Anchor staple holder accessory, 151 First guide post, 152 First guide groove, 153 First limiting block, 154 First limiting groove, 16 Attachment cartridge holder accessory, 161 Second guide post, 162 Second guide groove, 163 Spring, 164 Second limiting block, 165 Second limiting groove, 17 Cutting stop, 171 Third guide post, 18 Attachment cartridge accessory, 181 Left attachment cartridge accessory, 182 Right attachment cartridge accessory, 183 Installation limiting block A, 184 Installation limiting groove A, 185 Installation limiting block B, 186 Installation limiting groove B. Detailed Implementation
[0027] The present invention will now be described in detail with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description:
[0028] like Figures 1 to 9 As shown, a scalable and combinable stapler assembly includes a staple cartridge seat 11 and a staple seat 12 hinged at the rear end, with a staple cartridge 13 connected to the staple cartridge seat 11; the staple cartridge 13 has a cutting groove 14 in the middle.
[0029] The staple cartridge 11 is provided with a staple 111 inside and a staple pusher 112 for pushing the staple 111. The staple cartridge 11 has a staple outlet on the mating surface of the staple 111.
[0030] By manipulating the stapler, the staple cartridge seat 11 and the staple seat 12 are closed to each other, and the cutting blade can be controlled to slide and cut the tissue in the cutting groove 14 in the front-back direction, while pushing the staple pusher block 112 to push out the staples 111;
[0031] The front end of the staple cartridge 11 is provided with a cutting stop 17 that is detachably connected to the staple cartridge 11;
[0032] It also features extension components, which include:
[0033] At least one anvil fitting 15 is sequentially detachable and detachable between the extension component and the anvil 12, forming an integral unit with the function of the anvil 12;
[0034] At least one staple cartridge holder accessory 16 is sequentially detachable and detachable from the front end of the staple cartridge holder 11, forming a whole unit with the function of the staple cartridge holder 11; and
[0035] At least one staple cartridge accessory 18 can be installed on a corresponding staple cartridge seat accessory 16 and together with the staple cartridge, form an integral unit with the function of staple cartridge 13.
[0036] This invention utilizes a two-by-two interlocking method to connect the anvil, the anvil, the staple cartridge, and the staple cartridge. In clinical use, the anastomosis length of the stapler assembly can be increased according to the required length of the surgical site.
[0037] The sectional view of the staple cartridge holder or staple cartridge holder accessory is as follows: Figure 9 As shown, the anastomosis structure is no different from that of a general stapler. Therefore, the specific operating principle of this utility model is also similar to that of a general stapler assembly. The stapler body is activated, propelling the cutting blade forward in the cutting groove of the staple cartridge seat to cut the tissue. Simultaneously, the anvil and the staple cartridge seat engage with each other. During the engagement process, the pusher block pushes the pusher block inside the staple cartridge seat towards the engagement surface, thereby pushing the staples towards the anvil and out of the outlet to engage with the staple pit on the anvil. As the cutting blade continues to advance, the staples continuously engage with the cut tissue.
[0038] However, conventional staplers have a fixed length, and for tissues of different lengths, multiple staplers of different lengths may need to be prepared. Furthermore, the tissue length may vary for each patient during surgery, and conventional staplers may require a pre-selected length; if the selected length is unsuitable, a new stapler of appropriate length needs to be prepared. The advantage of this invention is that it allows for free assembly of the stapler components, enabling the length to be adjusted as needed, thus increasing the flexibility of the stapler to adapt to more clinical requirements, improving surgical efficiency, and demonstrating greater practicality and advantages.
[0039] It should be noted that the cutting stop 17 is designed as a separate piece. This is mainly because the cutting blade in this invention is designed with the maximum stroke in mind. If the length of the staple cartridge 11 does not meet the maximum stroke, the cutting stop 17 is needed to limit the cutting blade so that it can stop in time during subsequent cutting. When the cutting blade encounters strong resistance, it means that the cutting blade has reached the position of the cutting stop 17, and the cutting and fitting ends.
[0040] The rear end of the anvil fitting 15 is provided with a plurality of rearwardly extending first guide posts 151;
[0041] The front end of the anvil 12 and the front end of the anvil fitting 15 are provided with a plurality of rearwardly extending first guide grooves 152, so that the anvil fitting 15 and the anvil fitting 15 or the anvil fitting 15 and the anvil 12 are connected by the first guide post 151 and the first guide groove 152.
[0042] The rear end of the first guide post 151 is also provided with a first limiting block 153, and the rear end of the first guide groove 152 is also provided with a first limiting groove 154 that cooperates and connects with the first limiting block 153.
[0043] In use, the first guide post 151 and the first guide groove 152 are connected, allowing the first limiting block 153 to fall into the first limiting groove 154, thus achieving connection. When disassembly is required, simply push the first limiting block 153 away from the first limiting groove 154 using a tool to separate the anvil seat 12 from the anvil seat accessory 15, or separate the anvil seat accessory 15 from each other. Alternatively, an interference fit between the first guide post 151 and the first guide groove 152 can also achieve the same connection effect.
[0044] The rear end of the staple cartridge fitting 16 is provided with a plurality of rearwardly extending second guide posts 161;
[0045] The front end of the staple cartridge seat 11 and the front end of the staple cartridge seat accessory 16 are provided with a plurality of rearwardly extending second guide grooves 162, so that the staple cartridge seat accessory 16 and the staple cartridge seat accessory 16 or the staple cartridge seat 11 are connected by second guide posts 161 and second guide grooves 162.
[0046] The second guide post 161 has rearwardly extending spring pieces 163 on both sides of its rear end, and a second limiting block 164 is provided on the outer side of the spring piece 163.
[0047] The second guide groove 162 has a second limiting groove 165 on both sides of its rear end, which is connected to the second limiting block 164.
[0048] Similarly, during connection, the second guide post 161 is inserted into the second guide groove 162, and the second limiting block 164 is embedded in the second limiting groove 165 to achieve a snap-fit, thereby connecting the staple cartridge seat accessory 16 and the staple cartridge seat 11, or connecting the staple cartridge seat accessory 16 and the staple cartridge seat accessory 16. When disassembly is required, simply disengage the second limiting block 164 from the second limiting groove 165 to achieve separation.
[0049] The connection methods between anvil components, between anvil components themselves, between staple cartridge components, and between staple cartridge components and staple cartridges are all fairly standard snap-fit methods, so they will not be elaborated on further. It is important to emphasize that the connection between the first limiting block and the first limiting groove, as well as the connection between the second limiting block and the second limiting groove, are designed to improve the snap-fit strength, prevent insecure connections, and ensure the safe and effective conduct of the surgery.
[0050] The cutting stop 17 is detachably connected to the front end of the staple cartridge seat 11 or the staple cartridge seat accessory 16.
[0051] The rear end of the cutting stop member 17 is provided with several rearwardly extending third guide posts 171, which can be connected to the second guide groove 162. The cutting stop member is placed at the front end to limit the formation of the cutting blade. Its structure is relatively conventional, so it will not be described in detail.
[0052] The staple cartridge accessory 18 includes a left staple cartridge accessory 181 and a right staple cartridge accessory 182;
[0053] The left staple cartridge accessory 181 and the right staple cartridge accessory 182 are respectively installed on the left and right sides of the staple cartridge base accessory 16; a gap is left between the left staple cartridge accessory 181 and the right staple cartridge accessory 182 to form the cutting groove 14.
[0054] The lower end faces of the left staple cartridge accessory 181 and the right staple cartridge accessory 182 are each provided with a downwardly extending installation limiting block A183; the staple cartridge seat accessory 16 is provided with an installation limiting groove A184 that cooperates with and connects to the installation limiting block A183.
[0055] The left and right staple cartridge accessories 181 and 182 are also provided with mounting limit blocks B185 on their sides; each staple cartridge seat accessory 16 is provided with a mounting limit groove B186 that mates with the mounting limit block B185. These two types of mounting limit blocks and mounting limit grooves are designed to improve the connection strength between the staple cartridge and the staple cartridge seat or / and the staple cartridge seat accessory, ensuring the safe and effective execution of the surgery.
[0056] The staple cartridge accessory 18, formed by the combination of the left staple cartridge accessory 181 and the right staple cartridge accessory 182, has an internal structure that is no different from that of a traditional staple cartridge. The initial positions and structures of the pusher block 112 and the staple outlet are identical to those of existing pusher blocks 112 and staple outlets; they are simply divided into independent units. Therefore, the detailed structure of the staple cartridge accessory 18 will not be described further.
[0057] Taking the current experimental product size as an example, the mating length of the anvil 12 and the staple cartridge seat 11 is preferably 30 mm. The mating length of the anvil accessory 15 and the staple cartridge seat accessory 16 is preferably 15 mm.
[0058] The staple cartridge accessory 18 is available in lengths of 30mm, 45mm, 60mm, 75mm, and 90mm. The lengths of the staple anchor, staple cartridge holder, staple cartridge, staple anchor accessory, staple cartridge holder accessory, and staple cartridge are designed to work together, and the lengths can be customized as needed.
[0059] Taking the above model as an example: if two anchor seat accessories and two staple cartridge seat accessories are assembled, then the required staple cartridge accessory model is 30mm. That is, the length of the two additional staple cartridge seat accessories is 15mm*2=30mm. Combined with the original 30mm staple cartridge, a stapler assembly with a length of 60mm is formed, and so on.
[0060] In summary, the method of using this utility model is as follows:
[0061] Clinical observation determines the required length of the stapler assembly. The necessary anvil and staple cartridge accessories are then installed onto the anvil and staple cartridge respectively. Finally, the required staple cartridge model is selected and installed.
[0062] Insert the stapler assembly into the cavity through the instrument channel, locate the tissue to be cut and anastomosed, and position the tissue on the anastomotic surface of the stapler assembly. Firing the stapler body initiates the cutting and anastomosis process. After the cutting and anastomosis is complete, withdraw the stapler assembly and close the instrument channel. The surgery is now finished.
[0063] Although this utility model has been illustrated and described using specific embodiments and alternative methods, it should be understood that various changes and modifications are permitted as long as they do not depart from the spirit and scope of this utility model. Therefore, it should be understood that this utility model is not limited in any sense except by the appended claims and their equivalents.
Claims
1. A scalable and combinable stapler assembly comprising a rear-mounted staple cartridge seat (11) and an anvil seat (12), wherein a staple cartridge (13) is connected to the staple cartridge seat (11); the staple cartridge (13) is provided with a cutting groove (14) in the middle. The staple cartridge seat (11) is provided with a staple (111) inside and a staple pusher (112) for pushing the staple (111). The staple outlet of the staple (111) is provided on the mating surface of the staple cartridge seat (11). By manipulating the stapler, the staple cartridge seat (11) and the staple seat (12) are closed to each other, and the cutting blade can be controlled to slide and cut the tissue in the cutting groove (14) in the front and back direction, while pushing the staple pusher (112) to push out the staples (111); Its features are, The front end of the staple cartridge seat (11) is provided with a cutting stop (17) that is detachably connected to the staple cartridge seat (11); It also features extension components, which include: At least one anvil fitting (15) is sequentially detachable and detachable between the extension component and the anvil (12) to form an integral unit with the function of the anvil (12); At least one staple cartridge holder accessory (16) can be sequentially disassembled and connected to the front end of the staple cartridge holder (11) to form an integral unit with the function of the staple cartridge holder (11); as well as At least one staple cartridge accessory (18) can be installed on the corresponding staple cartridge seat accessory (16) and together with the staple cartridge, form an integral unit with the staple cartridge (13) function.
2. The scalable and combinable anastomosis device assembly according to claim 1, characterized in that: The rear end of the anvil fitting (15) is provided with a plurality of rearwardly extending first guide posts (151); The front end of the anvil (12) and the front end of the anvil fitting (15) are provided with a plurality of rearwardly extending first guide grooves (152); so that the anvil fitting (15) and the anvil fitting (15) are connected to each other or to the anvil fitting (12) through the first guide post (151) and the first guide groove (152).
3. The scalable and combinable anastomosis device assembly according to claim 2, characterized in that: The rear end of the first guide post (151) is also provided with a first limiting block (153), and the rear end of the first guide groove (152) is also provided with a first limiting groove (154) that cooperates with and connects to the first limiting block (153).
4. The scalable and combinable anastomosis device assembly according to claim 1, characterized in that: The rear end of the staple cartridge fitting (16) is provided with several rearwardly extending second guide posts (161); The front end of the staple cartridge seat (11) and the front end of the staple cartridge seat accessory (16) are provided with a plurality of rearwardly extending second guide grooves (162); so that the staple cartridge seat accessory (16) and the staple cartridge seat accessory (16) or the staple cartridge seat accessory (16) and the staple cartridge seat (11) are connected by the second guide post (161) and the second guide grooves (162).
5. A scalable and combinable anastomosis device assembly according to claim 4, characterized in that: The second guide post (161) has rearwardly extending spring pieces (163) on both sides of its rear end, and the outer side of the spring piece (163) is provided with a second limiting block (164). The second guide groove (162) has a second limiting groove (165) on both sides of its rear end, which is connected to the second limiting block (164).
6. A scalable and combinable anastomosis device assembly according to claim 4, characterized in that: The cutting stop (17) is detachably connected to the front end of the staple cartridge seat (11) or the staple cartridge seat accessory (16); The cutting stop (17) has several rearwardly extending third guide posts (171) at its rear end, which can be connected with the second guide groove (162).
7. A scalable and combinable anastomosis device assembly according to claim 1, characterized in that: The staple cartridge accessory (18) includes a left staple cartridge accessory (181) and a right staple cartridge accessory (182); The left staple cartridge fitting (181) and the right staple cartridge fitting (182) are respectively installed on the left and right sides of the staple cartridge base fitting (16); a gap is left between the left staple cartridge fitting (181) and the right staple cartridge fitting (182) to form the cutting groove (14).
8. A scalable and combinable anastomosis device assembly according to claim 7, characterized in that: The lower end faces of the left staple cartridge fitting (181) and the right staple cartridge fitting (182) are provided with downwardly extending installation limit blocks A (183); the staple cartridge seat fitting (16) is provided with installation limit grooves A (184) that cooperate with and connect with the installation limit blocks A (183); The left and right staple cartridge fittings (181 and 182) are also provided with mounting limit blocks B (185) on their sides; each staple cartridge seat fitting (16) is provided with mounting limit grooves B (186) that cooperate with and connect with the mounting limit blocks B (185).