Split type nail bin assembly and anastomat

Abstract

The split type nail bin assembly comprises a nail bin, a nail bin seat, a push block piece and a nail anvil, a plurality of groups of guide grooves used for placing anastomosis nails are formed in the nail bin, nail pushing blocks used for pushing the anastomosis nails are arranged in the guide grooves, and an elastic component used for enabling the nail bin to adapt to the tissue thickness is arranged on the top surface of the nail bin; a plurality of groups of nail bins are detachably arranged on the two sides of the nail bin seat, and a blocking component is arranged at the front end of the nail bin seat; the pushing block piece is detachably arranged at the front end of the cutting knife, moves along with the cutting knife and pushes the nail pushing block to move in the guide groove; the end of the nail anvil is hinged to the nail bin seat, and nail pits corresponding to the anastomosis nails are formed in the nail anvil. The split combined type nail bin is adopted, part of the nail bins can be increased or decreased according to actual clinical requirements, needed end holes are reserved, operation innovation is facilitated, personalized anastomosis requirements are met, harm is reduced, the clinical anastomosis effect is improved, and the use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a split staple cartridge assembly and a stapler. Background Technology

[0002] Currently, there are two main structural forms of laparoscopic linear cutting staplers on the market. The type II stapler is where the cutting blade is mounted on the corresponding staple cartridge. Type II staplers are available in models with anastomosis lengths of 30mm, 45mm, and 60mm, which can meet certain anastomosis length requirements. However, multiple staplers are often needed to complete the entire surgery. There are even sleeve-shaped laparoscopic staplers specifically for gastric surgery, with an astonishing anastomosis length of over 230mm, enabling a single incision to remove the stomach.

[0003] When selecting a staple cartridge, different colored cartridges (representing different staple heights) are chosen based on tissue thickness to meet the needs of anastomosis in tissues of varying thicknesses. However, the staple cartridges themselves have poor adaptability, resulting in a wide variety of staple height models (distinguished by colors such as gray, white, blue, gold, green, and black), which makes it inconvenient for doctors to select a cartridge and often leads to unsuitable cartridge selection, resulting in poor anastomosis outcomes.

[0004] However, the thickness of the stomach itself varies considerably (the wall thickness of the cardia, pylorus, and antrum may reach 4-5 mm, while the fundus is relatively thin, possibly 2-3 mm, and the body 3-4 mm). Using a single staple cartridge, whose staple height cannot be adjusted, can lead to multi-regional anastomosis defects, inconsistent compressive strength, low staple success rate, and bleeding. Furthermore, selecting multiple staple cartridges of different thicknesses for multiple anastomoses is complex, and staple cartridges of different anastomosis lengths require corresponding stapler models, resulting in high operating costs as consumables.

[0005] In addition, for end-to-side anastomosis, after the anastomosed tissue is in place, it is often necessary to make a hole in the normal tissue to insert the anastomosis, causing secondary damage to the tissue; and for severed tissue, the diseased tissue that needs to be discarded is also anastomosed, wasting multiple staple cartridges and failing to reduce the economic burden on patients. Utility Model Content

[0006] To address the aforementioned problems, this utility model proposes a split-type staple cartridge assembly and a laparoscopic stapler, the specific technical solution of which is as follows:

[0007] A split-type staple cartridge assembly, comprising:

[0008] The staple cartridge has several sets of guide grooves for placing staples, and push blocks for pushing the staples are provided in the guide grooves. The top surface of the staple cartridge is provided with an elastic member for adapting to the tissue thickness.

[0009] A staple cartridge holder, on both sides of which multiple staple cartridges are detachably provided, and a blocking member is provided at the front end of the staple cartridge holder;

[0010] A pusher block, detachably mounted on the front end of the cutting blade, moves with the cutting blade and pushes a pusher block along a guide groove; and

[0011] The anvil has its end hinged to the staple cartridge seat, and the anvil has a staple pit corresponding to the matching staple.

[0012] Furthermore, the staple cartridge and the staple cartridge seat are movably engaged with each other.

[0013] Furthermore, the inner and outer walls of the staple cartridge seat are respectively arrayed with inner fixing grooves and outer fixing grooves. The middle part of the outer side of the staple cartridge is provided with a buckle protrusion that can be movably inserted into the inner fixing groove. The two ends of the outer side of the staple cartridge are provided with a pair of elastic hooks that can be movably inserted into two adjacent outer fixing grooves.

[0014] Furthermore, the elastic member is pressed against the inner top surface of the nail cartridge seat, and the elastic member is an elastic leg, elastic plate or spring assembly.

[0015] Furthermore, the bottom surface of the staple cartridge is provided with an anti-slip baffle to prevent abnormal staple formation.

[0016] Furthermore, both the staple cartridge seat and the anvil have a travel groove in the middle for the movement of the cutting blade, and the cutting blade has a blade holder for bringing the staple cartridge seat and the anvil closer together.

[0017] Furthermore, the outer surfaces of the staple cartridge and the staple anvil are provided with cover plates for shielding the tool groove.

[0018] Furthermore, a slot is provided between each set of guide grooves on the staple cartridge, and the staple pusher blocks in each set of guide grooves are connected by a slot plate that can move within the slot.

[0019] Furthermore, the end of the partition plate is provided as an inclined surface, and the push block is a wedge-shaped block that can be inserted into the partition groove and matches the inclined surface.

[0020] An anastomosis device comprising the aforementioned split-type stapler cartridge assembly.

[0021] Beneficial effects:

[0022] This invention adopts a modular staple cartridge, which can be added or removed according to actual clinical needs, leaving the required end holes. This facilitates surgical innovation, realizes personalized anastomosis requirements, and reduces damage. During anastomosis and staple insertion, each modular staple cartridge can be installed independently, achieving better adaptive staple height adjustment, improving clinical anastomosis results, and reducing usage costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0024] Figure 2 This is a schematic diagram of the nail chamber seat of this utility model.

[0025] Figure 3 This is a schematic diagram of the staple cartridge of this utility model.

[0026] Figure 4 This is a schematic diagram of the push block and the nail magazine of this utility model.

[0027] Figure 5 This is a cross-sectional view of the installation position of the elastic component of this utility model.

[0028] Figure 6 This is a schematic diagram of the end-side fitting and mounting of the staple cartridge according to this utility model.

[0029] Figure 7 This is a schematic diagram of the end-side anastomosis staple cutting of this utility model.

[0030] Figure 8 This is a schematic diagram of the cutting of severed tissue into staples according to the present invention.

[0031] Figure 9 This is a schematic diagram of the push block and push nail block of this utility model.

[0032] In the diagram: 1. Nail cartridge, 11. Guide groove, 111. Interval groove, 12. Nail pusher block, 121. Interval plate, 122. Inclined surface, 13. Snap-on protrusion, 14. Elastic hook, 15. Elastic component, 16. Anti-slip baffle; 2. Nail cartridge seat, 21. Blocking component, 22. Inner fixing groove, 23. Outer fixing groove; 3. Push block; 4. Nail anvil, 41. Nail pit; 5. Matching nail; 6. Cutting groove; 7. Cover plate; 8. Cutting blade, 81. Blade holder, 82. Pushing rod; 9. Tissue, 91. Cutting hole. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] like Figures 1 to 8 As shown, a split-type staple cartridge assembly includes a staple cartridge 1, a staple cartridge seat 2, a pusher block 3, and a staple anvil 4; wherein:

[0037] The staple cartridge 1 has several sets of guide grooves 11 for placing the staples 5. The guide grooves 11 are provided with push blocks 12 for pushing the staples 5. The top surface of the staple cartridge 1 is provided with an elastic member 15 for adapting to the thickness of the tissue 9. Multiple sets of staple cartridges 1 are detachably provided on both sides of the staple cartridge seat 2. The front end of the staple cartridge seat 2 is provided with a blocking member 21. The push block 3 is detachably provided at the front end of the cutting blade 8. The push block 3 moves with the cutting blade 8 and pushes the push block 12 to move along the guide grooves 11. The end of the anvil 4 is hinged to the staple cartridge seat 2. The anvil 4 is provided with a staple pit 41 corresponding to the staple 5.

[0038] like Figure 2 , 3 As shown in Figures 4 and 5, the outer side of the staple cartridge 1 and the inner and outer walls of the staple cartridge seat 2 are movably engaged with each other.

[0039] In one embodiment, the inner and outer walls of the staple cartridge base 2 are respectively provided with an inner fixing groove 22 and an outer fixing groove 23 arranged in an array. The middle of the outer side of the staple cartridge 1 is provided with a snap-fit ​​protrusion 13 that can be longitudinally moved and engaged in the inner fixing groove 22. The two ends of the outer side of the staple cartridge 1 are provided with a pair of elastic hooks 14 that can be longitudinally moved and engaged in the two adjacent outer fixing grooves 23. When installing the staple cartridge 1, the staple cartridge 1 is pressed downward toward the side of the staple cartridge base 2, so that the snap-fit ​​protrusion 13 of the staple cartridge 1 is engaged in the inner fixing groove 22, and the elastic hooks 14 are engaged in the outer fixing grooves 23. For example, each outer fixing groove 23 can be used by the elastic hooks 14 of two adjacent staple cartridges side by side, so that the staple cartridges 1 can be installed tightly side by side.

[0040] In another embodiment, the blocking member 21 forms a relatively closed structure at the front end of the staple cartridge seat 2. It can be a bent plate that abuts against the side of the staple cartridge 1 installed at the end of the staple cartridge seat 2 to prevent tissue 9 from entering the inner bottom of the staple cartridge seat 2.

[0041] like Figure 5 As shown, the elastic member 15 is tightly pressed against the inner top surface of the nail cartridge seat 2, and the elastic member 15 is an elastic leg, elastic plate or spring assembly with elasticity.

[0042] When tissue 9 enters between the staple cartridge 1 and the anvil 4, the two move closer together to compress the tissue 9. Due to the varying thickness of the tissue 9, the staple cartridge 1 will move longitudinally on the staple cartridge seat 2. During compression, the elastic force of the elastic member 15 causes the gap between the staple cartridge 1 and the anvil 4 to adapt to the thickness of the tissue 9, thereby achieving anastomosis at a suitable staple height. Therefore, by using the elastic member 15 to adapt the staple height of the anastomotic staple 5, the staple height of the anastomotic staple 5 can be more suitable for the tissue thickness, which is beneficial to tissue healing.

[0043] For tissues 9 with large thickness differences, the combination of staple cartridges 1 with different height matching staples 5 can be selected through prior measurement or database data to achieve the best tissue 9 adaptability.

[0044] like Figure 6 As shown, the staple cartridge seat 2 is installed with separate staple cartridges 1 on both sides, so that the staple cartridges 1 can be used in combination to meet the needs of multiple scenarios for tissue 9 to fit.

[0045] Taking an example where each side of the staple cartridge seat 2 can install four staple cartridges 1:

[0046] When performing end-to-side tissue anastomosis, four staple cartridges 1 can be installed on one side of the staple cartridge seat 2, and three staple cartridges 1 can be installed on the other side. In this case, after anastomosing the tissue 9, a section of tissue 9 will be cut but not anastomosed, forming a cutting hole 91, and its anastomosis line is as follows: Figure 7As shown. At this point, when performing end-to-side anastomosis, the cutting hole 91 can be used directly, without needing to make a hole in the normal tissue 9 to insert the anastomosis.

[0047] When severing tissue 9, if the assessment indicates that anastomosis is not required for the diseased tissue 9 that needs to be discarded (e.g., if the anvil portion of the round anastomosis needs to be inserted), then only one side of the staple cartridge 1 needs to be installed for anastomosis and cutting. The unilateral anastomosis line is as follows: Figure 8 As shown in the figure; this matching method can save several stapled cells 1, reducing the economic burden on patients.

[0048] like Figure 3 As shown, the bottom surface of the staple cartridge 1 is provided with an anti-slip baffle 16 to prevent abnormal nailing of the staples 5. When the staples 5 are joined, the staple cartridge seat 2 approaches the anvil 4, and the pusher block 3 pushes the pusher block 12. The pusher block 12 pushes the staples 5 to move within the guide groove 11, ultimately forming a nail in the nail pit 41. However, because the staple cartridge seat 2 and the anvil 4 approach each other in a rotating manner, there is a certain angle, which makes it possible for the staples 5 to slide outwards, leading to abnormal nailing. Therefore, the anti-slip baffle 16 is provided on the bottom surface of the staple cartridge 1 near the outside of the guide groove 11, which can effectively prevent abnormal nailing of the staples 5.

[0049] like Figure 1 , 5 As shown, the middle of both the staple cartridge seat 2 and the staple anvil 4 is provided with a tool groove 6 for the movement of the cutting blade 8, and the cutting blade 8 is provided with a tool holder 81 for bringing the staple cartridge seat 2 and the staple anvil 4 closer to each other.

[0050] The upper part of the blade holder 81 extends through the tool groove 6 of the staple cartridge 2 to the top surface of the staple cartridge 2, and the lower part of the blade holder 81 extends through the tool groove 6 of the anvil 4 to the bottom surface of the anvil 4, thus restricting the blade holder 81 from moving out of the tool groove 6. Therefore, when the cutting blade 8 moves forward to cut, the blade holder 81 is restricted by the staple cartridge 2 and the anvil 4, causing the staple cartridge 2 and the anvil 4 to move closer to each other, thereby completing the matching of the matching staples 5 and the cutting operation of the cutting blade 8.

[0051] In one embodiment, the outer surfaces of the staple cartridge 2 and the anvil 4 are provided with cover plates 7 for shielding the feed groove 6. The top surface of the staple cartridge 2 and the bottom surface of the anvil 4 are both provided with grooves of a certain height for the movement of the tool holder 81, thus avoiding interference with the movement of the tool holder 81. Simultaneously, the cover plates 7 also prevent the tissue 9 from obstructing the movement of the tool holder 81, or the movement of the tool holder 81 from adversely affecting the tissue 9.

[0052] It should be noted that the blade holder 81 can be moved out from the rear end of the anvil 4. The anvil 4 can be controlled to rotate around the staple cartridge seat 2 at the hinge point so that the staple cartridge seat 2 and the anvil 4 open at a certain angle. At this time, when the cutting blade 8 is moved forward, the blade holder 81 can re-enter the feed groove of the anvil 4, so that the staple cartridge seat 2 and the anvil 4 approach each other and squeeze the tissue, and finally complete the cutting of the tissue into staples.

[0053] like Figure 9 As shown, a slot 111 is provided between each set of guide grooves 11 on the nail cartridge 1, and the nail pusher block 12 in each set of guide grooves 11 is connected by a slot plate 121 that can move in the slot 111.

[0054] For example, the three horizontal guide grooves 11 on each staple cartridge 1 form a group, and each group of guide grooves 11 corresponds to a group of pusher blocks 12; that is, each group of pusher blocks 12 is used to push three staples 5 into a staple, and the three pusher blocks 12 are connected by two interlayer plates 121 to form a whole. Each staple cartridge 1 has two interlayer grooves 111, which are used to push the three staples 5 into a staple when the two interlayer plates 121 move downward.

[0055] In one embodiment, the end of the interlayer plate 121 is provided as an inclined surface 122, and the pusher 3 is a wedge-shaped block that can be inserted into the slot 111 and matches the inclined surface 122. The wedge-shaped surface of the wedge-shaped block corresponds one-to-one with the inclined surface 122 on the interlayer plate 121, so that the wedge-shaped block can accurately cut into the top surface of the interlayer plate 121, thereby using the wedge-shaped block to push the interlayer plate 121. The interlayer plate 121 then drives the pusher block 12 to move downward, and finally pushes the matching nail 5 to nail in the nail pit 41.

[0056] like Figure 1 As shown, based on the above embodiments, a stapler is provided, including the above-mentioned split staple cartridge 1 assembly. The cutting blade 8 in the staple cartridge 1 assembly is connected to the pusher rod 82, which can be manually or electrically fed or pushed.

[0057] When in use, depending on the scenario where tissue 9 needs to be anastomosed, staple cartridge 1 is installed on one side of staple cartridge seat 2, or different numbers of staple cartridges 1 are installed on both sides respectively. The cutting blade 8 is pushed to perform partial / complete anastomosis of tissue 9, or partial / complete cutting and separation, to avoid secondary damage to tissue 9, save staple cartridges, and reduce the economic burden on patients.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split-type staple cartridge assembly, characterized in that, include: The staple cartridge has several sets of guide grooves for placing staples, and push blocks for pushing the staples are provided in the guide grooves. The top surface of the staple cartridge is provided with an elastic member for adapting to the tissue thickness. A staple cartridge holder, on both sides of which multiple staple cartridges are detachably provided, and a blocking member is provided at the front end of the staple cartridge holder; A pusher block, detachably mounted on the front end of the cutting blade, moves with the cutting blade and pushes a pusher block along a guide groove; and The anvil has its end hinged to the staple cartridge seat, and the anvil has a staple pit corresponding to the matching staple.

2. The split-type staple cartridge assembly according to claim 1, characterized in that, The staple cartridge and staple cartridge seat can be moved towards each other and locked together.

3. A split-type staple cartridge assembly according to claim 2, characterized in that, The inner and outer walls of the staple cartridge seat are respectively provided with an array of inner and outer fixing grooves. The middle part of the outer side of the staple cartridge is provided with a buckle protrusion that can be movably inserted into the inner fixing groove. The two ends of the outer side of the staple cartridge are provided with a pair of elastic hooks that can be movably inserted into two adjacent outer fixing grooves.

4. A split-type staple cartridge assembly according to claim 3, characterized in that, The elastic member is pressed against the inner top surface of the nail cartridge seat, and the elastic member is an elastic leg, elastic plate or spring assembly.

5. A split-type staple cartridge assembly according to claim 1, characterized in that, The bottom surface of the staple cartridge is provided with an anti-slip baffle to prevent abnormal staple formation.

6. A split-type staple cartridge assembly according to claim 1, characterized in that, Both the staple cartridge and the anvil have a travel groove in the middle for the movement of the cutting blade, and the cutting blade has a blade holder for bringing the staple cartridge and the anvil closer together.

7. A split-type staple cartridge assembly according to claim 6, characterized in that, The outer surfaces of the staple cartridge and the staple anvil are provided with cover plates to cover the feed groove.

8. A split-type staple cartridge assembly according to claim 1, characterized in that, The staple cartridge has a slot between each set of guide slots, and the staple pusher blocks in each set of guide slots are connected by a plate that can move within the slot.

9. A split-type staple cartridge assembly according to claim 8, characterized in that, The end of the partition plate is set as an inclined surface, and the push block is a wedge-shaped block that can be inserted into the partition groove and matches the inclined surface.

10. A stapler, characterized in that, Includes the split-type staple cartridge assembly as described in any one of claims 1 to 9.

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