Replaceable staple cartridge assembly with superfine rod and cutting anastomat

Abstract

The utility model discloses an ultra-thin rod replaceable nail bin assembly and a cutting anastomat, which belong to the technical field of surgical anastomats, and comprise an adapter sleeve assembly, a middle sleeve assembly arranged on the adapter sleeve assembly, and a nail propping seat assembly and a nail bin assembly which are movably arranged on the middle sleeve assembly through a forceps head seat assembly, the pushing assembly and the steering drag hook penetrate through the connecting sleeve assembly and the middle sleeve assembly. The nail bin assembly comprises a nail bin base hinged to the forceps head base assembly and a detachable nail bin assembly clamped in the nail bin base. The detachable nail bin assembly comprises a nail bin, a nail pushing piece and an inclined pushing block, wherein the nail pushing piece and the inclined pushing block are arranged in the nail bin. The cutting knife is arranged in the inclined pushing block and on a step of the nail bin. According to the device, the detachable nail bin assembly is mainly designed, and the use cost is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of surgical stapler technology, specifically relating to an ultra-thin rod replaceable staple cartridge assembly and a cutting stapler. Background Technology

[0002] Chinese Patent Publication No. CN118252562B discloses an ultra-thin rod laparoscopic assembly and a laparoscopic cutting and anastomosis device, including an adapter sleeve assembly, an intermediate sleeve assembly, a forceps head assembly, an anvil assembly, and a staple cartridge assembly; the adapter sleeve assembly includes a sleeve, an outer sleeve sleeved outside the sleeve, a transmission rod and a secondary safety assembly placed inside the sleeve, a steering hook placed on the sleeve, and a safety device sleeved outside the sleeve, the safety device being used to lock the secondary safety assembly, wherein the transmission rod is mounted on the secondary safety assembly, and the secondary safety assembly limits the movement range of the transmission rod.

[0003] However, the ultra-thin rod endoscope components and endoscope cutting and anastomosis devices disclosed in the existing technology are disposable instruments, which have high usage costs. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide an ultra-thin rod replaceable staple cartridge assembly and a cutting stapler.

[0005] This utility model provides the following technical solution:

[0006] A replaceable staple cartridge assembly with an ultra-thin rod includes an adapter sleeve assembly, an intermediate sleeve assembly mounted on the adapter sleeve assembly, a staple anchor assembly and a staple cartridge assembly movably mounted on the intermediate sleeve assembly via a pliers head assembly, a push assembly and a steering hook passing through the adapter sleeve assembly and the intermediate sleeve assembly, and the staple cartridge assembly including a staple cartridge base hinged to the pliers head assembly and a detachable staple cartridge assembly snapped into the staple cartridge base; the detachable staple cartridge assembly includes a staple cartridge and a pusher plate and a slant pusher block placed inside the staple cartridge, with a cutting blade placed inside the slant pusher block and positioned on the step of the staple cartridge.

[0007] Specifically, one end of the outer wall of the staple cartridge is provided with a locking platform, and the inner wall of the staple cartridge base is provided with a corresponding locking groove; the other end of the outer wall of the staple cartridge is provided with a locking groove, and the inner wall of the staple cartridge base is provided with a corresponding locking platform.

[0008] Specifically, it also includes a protective cover with two symmetrical side ears and protrusions on the side ears. The protrusions are engaged in the limiting groove of the staple cartridge. The staple cartridge base has a sloping groove corresponding to the protrusion position, and the protrusion is a sloping protrusion. When the detachable staple cartridge assembly is installed on the staple cartridge base, the sloping groove will gradually push the protrusion outward, causing the protrusion to leave the limiting groove, and then the protective cover will automatically fall off the detachable staple cartridge assembly.

[0009] Specifically, the two sides of the inclined push block are provided with three slots, and the nail cartridge is provided with corresponding protrusions.

[0010] Specifically, the end of the staple cartridge also has symmetrical protrusions, and the staple cartridge base has corresponding grooves.

[0011] Specifically, when the detachable staple cartridge assembly is installed on the staple cartridge base, it forms a pry bar insertion slot. At this time, inserting the pry bar into the pry bar insertion slot allows for targeted force to detach the detachable staple cartridge assembly from the staple cartridge base.

[0012] Specifically, it also includes a cutting limiting device, which is installed on the jaw base of the jaw assembly and located in front of the cutting assembly. The cutting limiting device includes a movable block that is movably mounted on the jaw base by a spring, a positioning post that is mounted on the jaw base, and the limiting block that is movably sleeved on the positioning post by a torsion spring. The movable block and the limiting block are in contact with each other, and the limiting block is L-shaped. In the initial state, the positioning post is stuck at the cutting head of the cutting assembly. When the detachable staple cartridge assembly is installed on the staple cartridge base, the detachable staple cartridge assembly pushes the movable block to move, thereby causing the positioning post to rotate, so that the side arm of the positioning post that is stuck on the cutting assembly retracts. At this time, the cutting assembly is in a free state and can move freely.

[0013] Specifically, both the steering hook three of the steering hook and the auxiliary hook of the caliper head assembly are equipped with a spring piece one. The other end of the spring piece one is installed on the lower sleeve of the intermediate sleeve assembly, while the upper sleeve of the intermediate sleeve assembly is provided with a toothed surface one, which matches the toothed surface two of the spring piece one.

[0014] Specifically, the inclined push block is provided with a through hole, and the step is provided with a countersink hole. The anvil assembly is provided with a spring piece two corresponding to the position of the countersink hole.

[0015] It also includes a cutting stapler that uses the ultra-thin rod to replace the staple cartridge assembly.

[0016] The beneficial effects of this utility model are:

[0017] After use, this device can be reused simply by replacing the detachable nail cartridge assembly, thus avoiding the single-use nature of the device and greatly reducing the cost of use. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a three-dimensional drawing of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the spring clip in this utility model;

[0021] Figure 3 This is a 3D view of the detachable staple cartridge assembly in this utility model;

[0022] Figure 4 This is a schematic diagram showing the position of the nail cartridge base in this utility model;

[0023] Figure 5 This is a three-dimensional view of the cutting blade and the inclined push block in this utility model;

[0024] Figure 6 This is a schematic diagram showing the position of the cutting blade inside the nail magazine in this utility model;

[0025] Figure 7 This is a schematic diagram showing the position of the cutting limiting device in this utility model;

[0026] Figure 8 This is a schematic diagram of the nail magazine structure in this utility model;

[0027] Figure 9 This is a schematic diagram of the structure of the nail cartridge base in this utility model;

[0028] Figure 10 This is a schematic diagram of the structure of the protective cover in this utility model;

[0029] Figure 11 This is a schematic diagram showing the position of the pry bar insertion slot in this utility model;

[0030] Figure 12 This is a schematic diagram of the inclined push block in this utility model;

[0031] Figure 13 This is a schematic diagram of the structure of tooth surface one in this utility model;

[0032] Figure 14 This is a schematic diagram of the cutting limiting device in this utility model;

[0033] Figure 15 This is a schematic diagram showing the position of the countersink hole in this utility model;

[0034] Figure 16 This is a schematic diagram showing the position of the second spring piece in this utility model;

[0035] The following are labeled in the diagram: 1. Adapter sleeve assembly; 2. Intermediate sleeve assembly; 3. Anchor seat assembly; 4. Pliers head seat assembly; 5. Staple cartridge assembly; 6. Spring clip two; 7. Protective cover; 8. Steering hook; 9. Pry bar; 10. Cutting limit device;

[0036] 201. Lower sleeve; 202. Upper sleeve; 203. Spring clip one; 204. Cutting assembly; 205. Tooth surface one; 206. Tooth surface two;

[0037] 401. Clamping head base;

[0038] 51. Staple cartridge base; 52. Staple cartridge assembly;

[0039] 511. Inclined groove; 512. Card platform two; 513. Groove;

[0040] 521. Angled push block; 522. Pin cartridge; 523. Cutting blade;

[0041] 5211, Slot 3; 5212, Side; 5213, Through hole;

[0042] 5221. Snap protrusion; 5222. Boss; 5223. Snap platform one; 5224. Snap slot two; 5225. Step; 5226. Pry bar insertion slot; 5227. Countersunk hole;

[0043] 701. Side ear; 702. Protrusion; 703. Limiting cover;

[0044] 1001, Moving block; 1002, Spring; 1003, Positioning pin; 1004, Torsion spring; 1005, Limiting block. Detailed Implementation

[0045] This utility model is an optimization of Chinese Patent Publication No. CN118252562B.

[0046] Example 1

[0047] like Figure 1 As shown, this utility model provides an ultra-thin rod replaceable staple cartridge assembly, including an adapter sleeve assembly 1, an intermediate sleeve assembly 2 installed on the adapter sleeve assembly 1, an anvil assembly 3 and a staple cartridge assembly 5 movably installed on the intermediate sleeve assembly 2 via a pliers head seat assembly 4.

[0048] Please refer to this carefully. Figure 1-7 The pushing component and the steering hook 8 pass through the connecting sleeve assembly 1 and the intermediate sleeve assembly 2. The pushing component can push the cutting component 204 forward and backward, and the steering hook 8 can drive the anvil assembly 3 to turn. The pushing component can drive the anvil assembly 3 to close towards the staple cartridge assembly 5 to press the staples together, while the cutting blade 523 performs tissue cutting.

[0049] Please refer to this carefully. Figure 3-6 Compared to existing technologies, the staple cartridge assembly 5 of this device includes a staple cartridge base 51 hinged to the pliers head assembly 4 and a detachable staple cartridge assembly 52 snapped into the staple cartridge base 51. The detachable staple cartridge assembly 52 includes a staple cartridge 522 and a pusher plate and a slant pusher block 521 disposed inside the staple cartridge 522. A cutting blade 523 is disposed within the slant pusher block 521 and on the step 5225 of the staple cartridge 522.

[0050] Please refer to this carefully. Figure 7 Meanwhile, the cutting blade at one end of the cutting assembly 204 is replaced with a cutting head, that is, the inner and outer push plates of the cutting assembly 1021 are both installed on the cutting head, and the cutting head pushes the inclined push block 521 forward, which in turn pushes the cutting blade 523 forward.

[0051] The cutting blade 523, the pusher blade, and the staple cartridge 522, which are mainly in contact with human tissue, are all contained in the detachable staple cartridge assembly 52. ​​Therefore, after the device is used up, only the detachable staple cartridge assembly 52 needs to be replaced to continue using it, thus avoiding the single-use nature of the device and greatly reducing the cost of use.

[0052] For details, please refer to the following: Figure 3 and 4 To ensure that the detachable staple cartridge assembly 52 can be securely engaged with the staple cartridge base 51 during use, a locking platform 5223 is provided at one end of the outer wall of the staple cartridge 522, and a corresponding locking groove is provided on the inner wall of the staple cartridge base 51, thereby creating a locking connection between the staple cartridge 522 and the staple cartridge base 51; please refer to the following for details. Figure 8 and 9 Meanwhile, to prevent the other end of the staple cartridge 522 from tilting up during use, a second slot 5224 is provided on the other end of the outer wall of the staple cartridge 522, and a second slot 512 is provided on the inner wall of the staple cartridge base 51.

[0053] Since the detachable staple cartridge assembly 52 is stored separately, the limiting and protection of individual components within the assembly need to be considered. Please refer to the following carefully. Figure 3 Before the removable staple cartridge assembly 52 is installed onto the staple cartridge base 51, a protective cover 7 will be snapped onto the removable staple cartridge assembly 52. ​​Please refer to this carefully. Figure 10 The protective cover 7 has two symmetrical side ears 701, and each side ear 701 has a protrusion 702. The protrusion 702 engages with the limiting groove of the staple cartridge 522. The protective cover 7 is made of plastic. To remove the protective cover 7, both side ears 701 must be pulled open simultaneously with both hands; otherwise, it cannot be removed. Therefore, the protective cover 7 can effectively cover the surface of the detachable staple cartridge assembly 52, preventing internal components from being exposed or dust from entering. Please refer to the following for details. Figure 3 The protective cover 7 is equipped with a limiting cover 703, which can further limit the movement of the internal cutting blade 523.

[0054] Please refer to this carefully. Figure 4 and 10Since the staple cartridge base 51 has a sloping groove 511 corresponding to the protrusion 702, and the protrusion 702 is a sloping protrusion, when the detachable staple cartridge assembly 52 is installed on the staple cartridge base 51, the sloping groove 511 will gradually push the protrusion 702 outward, causing the protrusion 702 to leave the limiting groove, and then the protective cover 7 will automatically fall off the detachable staple cartridge assembly 52. ​​The design allows the protective cover 7 to play a protective role when needed and to automatically fall off when needed for operation, making operation convenient and easy.

[0055] In addition to the design of the protective cover 7, the internal components of the removable staple cartridge assembly 52 have also been optimized to prevent components from moving around inside the assembly. Please refer to the following for details. Figure 8 and Figure 12 The main purpose is to limit the angled push block 521. The two sides 5212 of the angled push block 521 are provided with slots 5211, and the nail cartridge 522 is provided with corresponding protrusions 5221, so that the angled push block 521 can be limited to the end of the nail cartridge 522 when not in operation.

[0056] Please refer to this carefully. Figure 3 and Figure 9 In order to further prevent the detachable staple cartridge assembly 52 from falling off the staple cartridge base 51, the end of the staple cartridge 522 is also provided with symmetrical protrusions 5225, and the staple cartridge base 51 is provided with corresponding grooves 513, thereby further limiting the detachable staple cartridge assembly 52.

[0057] Due to the aforementioned multiple limiting design, the detachable staple cartridge assembly 52 is difficult to manually detach from the staple cartridge base 51. Therefore, auxiliary tools are needed to apply force at specific points to detach it. Please refer to the following for details. Figure 11 and Figure 1 When the detachable staple cartridge assembly 52 is installed on the staple cartridge base 51, it forms a pry bar insertion slot 5226. At this time, the pry bar 9 can be inserted into the pry bar insertion slot 5226 to apply force at a fixed point and make the detachable staple cartridge assembly 52 fall off the staple cartridge base 51.

[0058] Before installing the detachable staple cartridge assembly 52 on the staple cartridge base 51, to prevent the cutting assembly 204 from moving back and forth due to accidental activation when not in operation, a cutting limit device 10 needs to be installed in front of the cutting assembly 204. Please refer to this carefully. Figure 7 The cutting limit device 10 is installed on the jaw holder 401 of the jaw assembly 4 and is located in front of the cutting assembly 204; please refer to this carefully. Figure 14The cutting limiting device 10 includes a movable block 1001 movably mounted on the pliers head seat 401 via a spring 1002, a positioning post 1003 mounted on the pliers head seat 401, and a limiting block 1005 movably sleeved on the positioning post 1003 via a torsion spring 1004. The movable block 1001 and the limiting block 1005 are in contact with each other, and the limiting block 1005 is L-shaped. In the initial state, the positioning post 1003 is stuck at the cutting head of the cutting assembly 204. When the detachable staple cartridge assembly 52 is installed on the staple cartridge base 51, the detachable staple cartridge assembly 52 pushes the movable block 1001 to move, thereby driving the positioning post 1003 to rotate, so that the side arm of the positioning post 1003 that is stuck in the cutting assembly 204 retracts. At this time, the cutting assembly 204 is in a free state and can move freely. When a new detachable staple cartridge assembly 52 is replaced, the positioning post 1003 returns to the initial state.

[0059] For further details, please refer to the following: Figure 2 and Figure 13 The positioning component that provides cushioning in the existing technology is replaced with spring plate 203, thus simplifying the positioning component structure. Spring plate 203 is installed on both the steering hook 3 of the steering hook 8 and the auxiliary hook of the caliper head assembly 4. The other end of spring plate 203 is mounted on the lower sleeve 201 of the intermediate sleeve assembly 2. The upper sleeve 202 of the intermediate sleeve assembly 2 has a toothed surface 205, which meshes with the toothed surface 206 of spring plate 203. When the operator operates the steering hook 8 to turn, toothed surface 206 moves along the length of toothed surface 205, resulting in a "clicking" sound. Each "clicking" sound represents a 15-degree turn, making it easier for the operator to judge the direction. Therefore, the use of spring plate 203 provides both cushioning and facilitates precise operation by the operator.

[0060] For further details, please refer to the following: Figure 8 To prevent more meat scraps from getting stuck at the engagement point of the device, i.e., the end where the cutting blade 523 begins to cut, the length of the protrusion 5222 of the nail cartridge 522 is extended, thereby preventing meat scraps from getting stuck at the protrusion 5222.

[0061] For further details, please refer to the following: Figure 15 and Figure 16To prevent the cutting blade 523 from cutting other tissues after surgery, the inclined push block 521 is provided with a through hole 5213, and the step 5225 of the staple cartridge 522 is provided with a countersinking hole 5227. The staple seat assembly 3 is provided with a spring piece 6 corresponding to the countersinking hole 5227. When the cutting blade 523 moves to the countersinking hole 5227, due to the lack of support from the step 5225 and the elastic force of the spring piece 6, the cutting blade 523 will fall from the through hole 5213 into the countersinking hole 5227, so that the cutting blade 523 can be retracted into the staple cartridge 522 after surgery, avoiding damage to other tissues inside the body. Subsequently, the cutting blade 523 can also be replaced with the detachable staple cartridge assembly 52, making it convenient for surgeons to replace the new staple cartridge assembly.

[0062] The main feature of this device is the design of a detachable staple cartridge assembly 52, which greatly reduces the cost of use.

[0063] Example 2

[0064] This invention also provides a cutting stapler using the ultra-thin rod replaceable staple cartridge assembly disclosed in Embodiment 1 above.

[0065] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A replaceable staple cartridge assembly with an ultra-thin rod, comprising an adapter sleeve assembly, an intermediate sleeve assembly mounted on the adapter sleeve assembly, an anvil assembly and a staple cartridge assembly movably mounted on the intermediate sleeve assembly via a clamp head assembly, and a push assembly and a steering hook passing through the adapter sleeve assembly and the intermediate sleeve assembly. Its features are, The staple cartridge assembly includes a staple cartridge base hinged to the pliers head assembly and a detachable staple cartridge assembly snapped into the staple cartridge base; the detachable staple cartridge assembly includes a staple cartridge and a pusher and a slant block disposed inside the staple cartridge, with the cutting blade disposed within the slant block and positioned on a step of the staple cartridge.

2. The ultra-thin rod replaceable staple cartridge assembly according to claim 1, characterized in that, One end of the outer wall of the staple cartridge is provided with a locking platform, and the inner wall of the staple cartridge base is provided with a corresponding locking groove; the other end of the outer wall of the staple cartridge is provided with a locking groove, and the inner wall of the staple cartridge base is provided with a corresponding locking platform.

3. The ultra-thin rod replaceable staple cartridge assembly according to claim 1, characterized in that, It also includes a protective cover with two symmetrical side ears and a protrusion on each side ear. The protrusion is engaged in the limiting groove of the staple cartridge. The staple cartridge base has a sloping groove corresponding to the protrusion position, and the protrusion is a sloping protrusion. When the detachable staple cartridge assembly is installed on the staple cartridge base, the sloping groove will gradually push the protrusion outward, causing the protrusion to leave the limiting groove, and then the protective cover will automatically fall off the detachable staple cartridge assembly.

4. The ultra-thin rod replaceable staple cartridge assembly according to claim 1, characterized in that, The two sides of the inclined push block are provided with three slots, and the nail cartridge is provided with corresponding protrusions.

5. The ultra-thin rod replaceable staple cartridge assembly according to claim 1, characterized in that, The end of the staple cartridge also has symmetrical protrusions, and the staple cartridge base has corresponding grooves.

6. The ultra-thin rod replaceable staple cartridge assembly according to claim 1, characterized in that, When the detachable staple cartridge assembly is installed on the staple cartridge base, it forms a pry bar insertion slot. Inserting the pry bar into the pry bar insertion slot allows for targeted force to detach the detachable staple cartridge assembly from the staple cartridge base.

7. The ultra-thin rod replaceable staple cartridge assembly according to claim 1, characterized in that, It also includes a cutting limiting device, which is installed on the jaw base of the jaw assembly and located in front of the cutting assembly. The cutting limiting device includes a movable block that is movably mounted on the jaw base by a spring, a positioning post that is mounted on the jaw base, and the limiting block that is movably sleeved on the positioning post by a torsion spring. The movable block and the limiting block are in contact with each other, and the limiting block is L-shaped. In the initial state, the positioning post is stuck at the cutting head of the cutting assembly. When the detachable staple cartridge assembly is installed on the staple cartridge base, the detachable staple cartridge assembly pushes the movable block to move, thereby driving the positioning post to rotate, so that the side arm of the positioning post that is stuck on the cutting assembly retracts. At this time, the cutting assembly is in a free state and can move freely.

8. The ultra-thin rod replaceable staple cartridge assembly according to claim 1, characterized in that, Both the steering hook three of the steering hook and the auxiliary hook of the caliper head assembly are equipped with spring plate one. The other end of spring plate one is installed on the lower sleeve of the intermediate sleeve assembly, and the upper sleeve of the intermediate sleeve assembly is provided with tooth surface one, which matches the tooth surface two of spring plate one.

9. The ultra-thin rod replaceable staple cartridge assembly according to claim 1, characterized in that, The inclined push block has a through hole, and the step has a countersink hole. The anvil assembly has a spring piece two corresponding to the countersink hole position.

10. A cutting stapler using the ultra-thin rod replaceable staple cartridge assembly as described in any one of claims 1-9.

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