Staple cartridge assembly, anastomat and installation method of anastomat

Abstract

The invention provides a staple cartridge assembly, an anastomat and an installation method of the anastomat. The staple cartridge assembly comprises a staple cartridge, the staple cartridge has a length direction and a width direction, the staple cartridge comprises a first part and a second part which are oppositely arranged in the width direction, and the staple cartridge comprises a first end and a second end which are oppositely arranged in the length direction; wherein a feed groove is formed between the first part and the second part, and the first part and the second part are connected at the first end and separated by the feed groove at the second end. The first part and the second part of the staple cartridge are connected at the first end and separated by the feed groove at the second end, and the cutter gradually fills the feed groove in the assembly process, so that the first part and the second part are separated from each other relative to the feed groove, and the stable installation of the staple cartridge is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of staplers, and in particular to a stapler assembly, a stapler and a method for installing the stapler. Background Art

[0002] In the field of medical devices, especially surgical instruments, the assembly of the nail magazine and the cutter is a crucial link. The traditional assembly solution is usually to assemble the nail magazine and the cutter first, and then install the whole into the nail magazine seat. However, this assembly method has encountered many challenges in actual operation.

[0003] First, the material and structural characteristics of the staple cartridge holder and the staple cartridge itself determine that they have almost no elastic deformation ability. This means that during the assembly process, the fit between the various components must be very precise, and a slight deviation may lead to assembly difficulties or even damage the components. In particular, when the staple cartridge and the cutting knife are installed as a whole into the staple cartridge holder, the assembly difficulty increases significantly due to limited space and tight fit between the components.

[0004] Secondly, in order to solve the problem of assembly difficulty, a common practice is to design a large clearance fit. However, although this approach reduces the difficulty of assembly, it has a huge impact on the forming of titanium nails. Large clearance fit will cause the relative position between the nail magazine and the cutting knife to be unstable, resulting in errors in the titanium nail forming process, affecting the surgical effect and the patient's recovery. Summary of the invention

[0005] The object of the present invention is to provide a nail magazine assembly that is easy to install.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention provides a nail magazine assembly, comprising:

[0007] The nail magazine has a length direction and a width direction. The nail magazine includes a first part and a second part that are relatively arranged along the width direction, and the nail magazine includes a first end and a second end that are relatively arranged along the length direction; wherein a tool groove is provided between the first part and the second part, and the first part and the second part are connected at the first end and separated by the tool groove at the second end.

[0008] As a further improvement of the present invention, it also includes a nail pushing slider, which includes two nail pushing parts respectively arranged corresponding to the first part and the second part, the first part and the second part are provided with a first clamping part, and the two nail pushing parts are provided with a second clamping part for clamping with the first clamping part.

[0009] As a further improvement of the present invention, the nail pushing slider also includes a connecting plate connecting the two nail pushing parts, and the connecting plate is provided with a clamping groove for clamping with the cutting knife, and the clamping groove includes an opening close to the second end and an abutting part arranged opposite to the opening.

[0010] As a further improvement of the present invention, it also includes a nail magazine seat, which includes a bottom wall and side walls, and the bottom wall and the side walls are arranged to form a receiving space, and the nail magazine is received in the receiving space; and, the nail magazine is provided with a first snap portion, and the side wall is provided with a second snap portion for snapping with the first snap portion.

[0011] As a further improvement of the present invention, the first part and the second part are provided with a connecting part at the second end, the connecting part is connected to the nail magazine seat and the nail magazine through a connecting piece, and an installation position for installing a cutting knife is provided between the two connecting parts.

[0012] Another object of the present invention is to provide a stapler comprising the above-mentioned staple cartridge assembly.

[0013] To achieve the above-mentioned purpose, the technical solution of the present invention provides a stapler, including a cutting knife and the above-mentioned staple magazine assembly, wherein the cutting knife is configured to be movable along a knife groove.

[0014] As a further improvement of the present invention, the nail magazine assembly includes a nail pushing slider, which is provided with a clamping groove. The cutting knife includes a knife head and a knife rod connected to the knife head. The knife rod is provided with an avoidance groove at a position corresponding to the nail pushing slider. The knife head is at least partially located in the clamping groove and abuts against the abutment portion.

[0015] As a further improvement of the present invention, the nail magazine assembly includes a nail magazine seat, and the stapler also includes a nail anvil seat cooperatively connected to the nail magazine seat. The nail anvil seat and the nail magazine seat are rotatably connected at the second end, and at the first end, the nail anvil seat and the nail magazine seat are configured to be able to approach or move away from each other.

[0016] As a further improvement of the present invention, the cutting knife includes a cutter head, which includes an upper beam and a lower beam arranged relatively to each other, and a blade located between the upper beam and the lower beam, and the blade is arranged toward the first end; a first sliding groove for the upper beam to slide is provided on the nail support seat, and a second sliding groove for the lower beam to slide is provided on the nail magazine seat.

[0017] Another object of the present invention is to provide an installation method for the above-mentioned stapler.

[0018] To achieve the above object, the technical solution of the present invention provides a method for installing a stapler, which is applied to the above stapler. The stapler includes a stapler magazine, a stapler magazine seat, a staple pusher slider and a cutting knife. The installation method includes:

[0019] The nail magazine and the nail pushing slider are clamped together through the first clamping part and the second clamping part;

[0020] Pre-installing the nail magazine and the nail pushing slider in the receiving space of the nail magazine seat;

[0021] Install the cutting knife in the knife slot of the nail magazine;

[0022] The first part and the second part are separated from each other relative to the cutting groove by squeezing the first part and the second part by the cutting knife, and are clamped with the second clamping part on the nail magazine seat by the first clamping part on the nail magazine.

[0023] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0024] The present invention arranges the first part and the second part of the nail magazine to be connected at the first end and separated by the tool groove at the second end. During the assembly process, the cutting knife gradually fills the tool groove so that the first part and the second part are separated from each other relative to the tool groove, thereby achieving stable installation of the nail magazine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural diagram of a stapler according to an embodiment of the present invention;

[0026] Figure 2 yes Figure 1 An exploded view of the stapler shown;

[0027] Figure 3 yes Figure 2 A schematic diagram of the structure of the nail magazine shown;

[0028] Figure 4 yes Figure 3 A partial enlarged view of the nail magazine at another angle;

[0029] Figure 5 yes Figure 2 A partial enlarged view of the nail magazine seat shown;

[0030] Figure 6 yes Figure 3 A partial enlarged view of the circle;

[0031] Figure 7 yes Figure 2 The structural schematic diagram of the pin push slider shown;

[0032] Figure 8 yes Figure 2 A partial enlarged view of the circle;

[0033] Fig. 9 yes Figure 1 A cross-sectional view of the stapler shown. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] It should be noted here that in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0036] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] like Figure 1-2 As shown, the present invention provides a stapler 100, including a staple cartridge assembly 200, a cutting knife 300 and a staple anvil 400. The staple cartridge assembly 200 includes a staple cartridge 210, a staple push slider 220 and a staple cartridge seat 230. The staple cartridge seat 230 is connected with the staple anvil 400. The cutting knife 300 is connected between the staple anvil 400 and the staple cartridge seat 230, and can slide along the length direction of the staple cartridge 210 relative to the staple anvil 400 and the staple cartridge seat 230. The present invention installs the staple cartridge 210 into the staple cartridge seat 230, and then inserts the cutting knife 300, so that the staple cartridge 210 and the staple cartridge seat 230 are accurately assembled.

[0038] The staple cartridge 210 has a length direction and a width direction. Figure 3 As shown, the staple cartridge 210 includes a first portion 2101 and a second portion 2102 disposed opposite to each other along the width direction, and the staple cartridge 210 includes a first end 2103 and a second end 2104 disposed opposite to each other along the length direction. A knife groove 2105 is provided between the first portion 2101 and the second portion 2102, and the first portion 2101 and the second portion 2102 are connected at the first end 2103 and separated by the knife groove 2105 at the second end 2104.

[0039] The nail pushing slider 220 includes two nail pushing portions 2201 respectively corresponding to the first portion 2101 and the second portion 2102. Figure 4 and Figure 7 As shown, the first part 2101 and the second part 2102 are provided with a first clamping portion 2111, and the two nail pushing parts 2201 are provided with a second clamping portion 2211 for clamping with the first clamping portion 2111. In this embodiment, the first clamping portion 2111 and the second clamping portion 2211 are clamping grooves respectively provided on the nail magazine 210 and the nail pushing slider 220, and the first clamping portion 2111 and the second clamping portion 2211 are clamped with each other to connect the nail magazine 210 and the nail pushing slider 220.

[0040] like Figure 5As shown, the nail magazine seat 230 includes a bottom wall 2301 and a side wall 2302, and the bottom wall 2301 and the side wall 2302 are surrounded to form a receiving space 2303. The nail magazine seat 230 is a U-shaped structure, and one end is open. After the nail magazine 210 and the nail pushing slider 220 are connected, they can be directly placed into the receiving space 2303 from the upper end of the U-shaped nail magazine seat 230, or pushed into the receiving space 2303 from the open end of the nail magazine seat 230, so as to realize the pre-installation of the nail magazine 210 and the nail pushing slider 220.

[0041] like Figure 5 and Figure 6 As shown, the nail magazine 210 is provided with a first buckle portion 2112, and the side wall 2302 is provided with a second buckle portion 2321 for buckling with the first buckle portion 2112. After the nail magazine 210 is assembled into the nail magazine seat 230, the first buckle portion 2112 and the second buckle portion 2321 are basically aligned, but due to assembly gaps and other reasons, the first buckle portion 2112 may not be completely buckled into the second buckle portion 2321, resulting in the titanium nail groove (not shown) of the nail magazine 210 not reaching the correct position. The cutting knife 300 needs to be installed in the knife groove 2105 to fill the gap between the first part 2101 and the second part 2102, and the first part 2101 and the second part 2102 are respectively pressed against the corresponding side wall 2302 of the nail magazine seat 230, so that the first buckle portion 2112 and the second buckle portion 2321 can be tightly buckled. The provision of the first snap-fit ​​portion 2112 and the second snap-fit ​​portion 2321 enables the nail magazine 210 and the nail magazine seat 230 to be precisely connected, and limits the up and down movement of the nail magazine 210 in the nail magazine seat 230, thereby effectively enhancing the overall structural stability.

[0042] That is, when installing the stapler 100 of the present embodiment, the method is as follows: first, the staple cartridge 210 and the staple push slider 220 are clamped together through the first clamping portion 2111 and the second clamping portion 2211. Then, the staple cartridge 210 and the staple push slider 220 are pre-installed in the receiving space 2303 of the staple cartridge seat 230. Then, the cutting knife 300 is installed in the cutting groove 2105 of the staple cartridge 210. The cutting knife 300 squeezes the first part 2101 and the second part 2102 so that the first part 2101 and the second part 2102 are separated from each other relative to the cutting groove 2105, and finally, the first clamping portion 2112 on the staple cartridge 210 is clamped together with the second clamping portion 2321 on the staple cartridge seat 230.

[0043] After the nail magazine 210 and the nail magazine seat 230 are connected and fixed, the cutting knife 300 is placed. Figure 6As shown, the first part 2101 and the second part 2102 of the nail magazine 210 are provided with a connecting portion 2106 at the second end 2104, and a mounting position 2107 for mounting the cutting knife 300 is provided between the two connecting portions 2106. The cutting knife 300 is inserted into the cutting groove 2105 from the mounting position 2107. The cutting knife 300 includes a cutter head 310 and a cutter rod 320 connected to the cutter head 310. When the cutting knife 300 is installed, the cutter rod 320 first enters the cutting groove 2105 until the cutter head 310 abuts against the nail pushing slider 220. In this embodiment, the cutter head 310 and the cutter rod 320 are separately provided, and a protrusion 3202 is provided at the end of the cutter rod 320, and the cutter head 310 is correspondingly provided with a groove, and the protrusion 3202 is snapped into the groove to connect the cutter head 310 and the cutter rod 320. In other embodiments, the cutter head 310 and the cutter rod 320 can also be provided as one body.

[0044] Specifically, Figure 7 As shown, the nail pushing slider 220 includes a connecting plate 2202 connecting the two nail pushing parts 2201. By adding the connecting plate 2202, the two nail pushing parts 2201 are effectively connected together to form a more stable and complete structure, thereby improving the overall rigidity and stability of the nail pushing slider 220, so that it can better withstand various forces during use.

[0045] Furthermore, the connecting plate 2202 is provided with a clamping groove 2203 for clamping with the cutting knife 300. The design of the clamping groove 2203 enables the cutting knife 300 to be firmly clamped with the nail-pushing slider 220. This clamping method is not only simple and fast, but also can provide sufficient stability to ensure that the cutting knife 300 will not loosen or fall off during operation. The clamping groove 2203 provides a clamping point for the cutting knife 300, which means that the nail-pushing slider 220 is not only used to push nails, but also cooperates with the cutting knife 300.

[0046] The clamping groove 2203 includes an opening 2231 near the second end 2104 and an abutment portion 2232 disposed opposite to the opening 2231. The position of the knife bar 320 corresponding to the nail pushing slider 220 is provided with an avoidance groove 3201, and the knife head 310 is at least partially located in the clamping groove 2203 and abuts against the abutment portion 2232. After the cutting knife 300 is inserted into the knife feeding groove 2105, the knife head 310 enters the clamping groove 2203 along the opening 2231 until it abuts against the abutment portion 2232. At this time, the avoidance groove 3201 is just clamped with the abutment portion 2232 of the nail pushing slider 220, and the cutting knife 300 and the nail pushing slider 220 are accurately positioned together. The presence of the avoidance groove 3201 enables the abutment portion 2232 of the nail-pushing slider 220 to be located exactly between the cutter head 310 and the cutter bar 320, that is, whether the cutting knife 300 moves forward or backward along the length direction, it will drive the nail-pushing slider 220 to move together. The setting of the abutment portion 2232 further enhances the connection strength between the cutting knife 300 and the nail-pushing slider 220, so that the two can work together as a whole, and even under high-speed or high-load operating conditions, the cutting knife 300 can maintain a stable posture and position, thereby reducing the operational risk and the possibility of accidents.

[0047] like Figure 8 As shown, the cutter head 310 includes an upper beam 3101 and a lower beam 3102 that are arranged opposite to each other, and a cutting edge 3103 located between the upper beam 3101 and the lower beam 3102 .

[0048] like Fig. 9 As shown, the nail magazine seat 230 is provided with a second slide groove 2304 for the lower beam 3102 to slide. The second slide groove 2304 extends along the length direction and is located at the bottom of the nail magazine seat 230. The nail magazine 210 is located outside the second slide groove 2304 relative to the bottom wall 2301. The knife groove 2105 is aligned with the second slide groove 2304, and the cutting knife 300 slides along the knife groove 2105. The second slide groove 2304 not only guides the cutting knife 300, but also limits the cutting knife 300 when it is cutting, so as to prevent the knife head 310 from shaking, and the cutting stability is better.

[0049] The blade 3103 is located between the upper beam 3101 and the lower beam 3102, and the blade 3103 is tilted toward the first end 2103. It can be understood that in the initial non-cutting state, the blade head 310 is located at the second end 2104 of the staple cartridge seat 230, the blade rod 320 extends from the blade head 310 toward the first end 2103 of the staple cartridge seat 230, and the tissue is located on the side of the blade head 310 close to the blade rod 320. When the stapler 100 is cutting, the blade 3103 on the blade head 310 is driven to cut the tissue by pulling the blade rod 320.

[0050] After the cutting knife 300 and the nail magazine assembly 200 are assembled, the nail anvil 400 is installed. The nail anvil 400 is connected with the nail magazine seat 230 in a coordinated manner.

[0051] At the first end 2103 , the anvil 400 and the nail magazine seat 230 can move closer to or farther away from each other to control the anvil 400 and the nail magazine seat 230 to close or open.

[0052] At the second end 2104, the anvil 400 and the staple cartridge seat 230 are rotatably connected. At the second end 2104, the anvil 400 extends into the staple cartridge seat 230, and the anvil 400 can rotate relative to the staple cartridge seat 230 through the connecting member 240, so that the anvil 400 and the staple cartridge seat 230 are closed or opened, which facilitates the entry of tissue between the anvil 400 and the staple cartridge seat 230, and cutting and anastomosis are performed after clamping the tissue. The connecting member 240 not only connects the anvil 400 and the staple cartridge seat 230, but also connects the connecting portion 2106 of the staple cartridge 210. The staple cartridge 210 is limited in the staple cartridge seat 230 to ensure that it will not shift in the length direction of the staple cartridge 210.

[0053] like Fig. 9 As shown, the anvil seat 400 is provided with a first slide groove 410 for sliding the upper beam 3101. The first slide groove 410 is aligned with the second slide groove 2304, and the two cooperate with each other to limit and guide the upper beam 3101 and the lower beam 3102 of the cutting knife 300.

[0054] After the nail magazine assembly 200, the cutting knife 300 and the nail anvil 400 are assembled, the cutting knife 300 can slide in the cutting groove 2105, and at the same time, the nail pushing slider 220 pushes the nail outward to cooperate with the nail anvil 400 to achieve a kissing effect.

[0055] Specifically, the nail pusher slider 220 is located in front of the blade 3103 toward the knife rod 320, and is located on the outer wall surface of the second slide groove 2304 and slides on the outer wall surface of the second slide groove 2304. A plurality of nail pushers (not shown) connected with staples are provided in the staple magazine 210, and the nail pusher slider 220 extends into the staple magazine 210 and cooperates with the nail pushers to push the staples toward the staple support 400 for staple insertion. Figure 7 As shown, the highest point of the nail pushing slider 220 is set at the nail pushing part 2201, and the nail pushing part 2201 is provided with a molding surface 2212 and a nail pushing inclined surface 2213 connected to the molding surface 2212. The nail pusher is gradually pushed toward the nail support seat 400 through the nail pushing inclined surface 2213. When the molding surface 2212 contacts the nail pusher, the staples are pushed out and formed for anastomosis. The molding surface 2212 is the highest point of the nail pushing slider 220.

[0056] The stapler 100 performs cutting and stapleing specifically after the tissue enters between the staple holder 400 and the staple magazine holder 230, by pulling the knife rod 320, driving the knife head 310 to slide and then driving the staple pusher slider 220 to slide, and the staple pusher slider 220 gradually pushes the staple pusher toward the staple holder 400, and then the staples pass through the tissue and form a stapled joint under the action of the staple holder 400, and then the knife head 310 cuts the stapled tissue.

[0057] To summarize, in the embodiment of the present invention, the first part 2101 and the second part 2102 of the nail magazine 210 are configured to be connected to the first end 2103, and the second end 2104 is separated by the tool groove 2105. The nail magazine 210 and the nail pushing slider 220 are first installed, and then the cutting knife 300 is inserted into the tool groove 2105. During the assembly process, the cutting knife 300 gradually fills the tool groove 2105, so that the first part 2101 and the second part 2102 are separated from each other relative to the tool groove 2105, and the first buckle portion 2112 of the nail magazine 210 is buckled with the second buckle portion 2321 of the nail magazine seat 230, to ensure that the nail magazine 210 and the nail magazine seat 230 are accurately assembled.

[0058] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A nail magazine assembly, characterized in that: include: A nail magazine has a length direction and a width direction, the nail magazine includes a first part and a second part arranged opposite to each other along the width direction, and the nail magazine includes a first end and a second end arranged opposite to each other along the length direction; wherein a tool groove is provided between the first part and the second part, and the first part and the second part are connected at the first end and separated by the tool groove at the second end.

2. The staple cartridge assembly according to claim 1, characterized in that: It also includes a nail pushing slider, which includes two nail pushing parts respectively arranged corresponding to the first part and the second part, the first part and the second part are provided with a first clamping part, and the two nail pushing parts are provided with a second clamping part for clamping with the first clamping part.

3. The staple cartridge assembly according to claim 2, characterized in that: The nail-pushing slider further comprises a connecting plate connecting the two nail-pushing parts, wherein the connecting plate is provided with a clamping groove for clamping with the cutting knife, and the clamping groove comprises an opening close to the second end and an abutting part arranged opposite to the opening.

4. The staple cartridge assembly according to any one of claims 1 to 3, characterized in that: It also includes a nail magazine seat, which includes a bottom wall and side walls, wherein the bottom wall and the side walls are arranged to form a receiving space, and the nail magazine is received in the receiving space; and a first snap portion is provided on the nail magazine, and a second snap portion for snapping with the first snap portion is provided on the side wall.

5. The staple cartridge assembly according to claim 4, characterized in that: The first part and the second part are provided with a connecting part at the second end, and the connecting part is connected to the nail magazine seat and the nail magazine through a connecting piece, and an installation position for installing a cutting knife is provided between the two connecting parts.

6. A stapler, characterized in that: It comprises a cutting knife and a nail magazine assembly as described in any one of claims 1 to 5, wherein the cutting knife is configured to be movable along the knife groove.

7. The stapler according to claim 6, characterized in that: The nail magazine assembly includes a nail pushing slider, which is provided with a clamping groove. The cutting knife includes a knife head and a knife rod connected to the knife head. The knife rod is provided with an avoidance groove at a position corresponding to the nail pushing slider. The knife head is at least partially located in the clamping groove and abuts against the abutting portion.

8. The stapler according to claim 6, characterized in that: The stapler assembly includes a stapler seat, and the stapler also includes a stapler seat cooperatively connected to the stapler seat. The stapler seat and the stapler seat are rotatably connected at the second end, and at the first end, the stapler seat and the stapler seat are configured to be able to approach or move away from each other.

9. The stapler according to claim 8, characterized in that: The cutting knife includes a cutter head, which includes an upper beam and a lower beam arranged relatively to each other, and a blade located between the upper beam and the lower beam, and the blade is arranged toward the first end; the nail support seat is provided with a first sliding groove for the upper beam to slide, and the nail magazine seat is provided with a second sliding groove for the lower beam to slide.

10. A method for installing a stapler, characterized in that: The stapler according to any one of claims 6 to 9 comprises a stapler, a stapler seat, a staple pusher slider and a cutting knife, and the installation method comprises: The nail magazine and the nail pushing slider are clamped together through a first clamping portion and a second clamping portion; Pre-installing the nail magazine and the nail pushing slider in the receiving space of the nail magazine seat; Installing the cutting knife in the knife slot of the nail magazine; The first part and the second part are squeezed by the cutting knife so that the first part and the second part are separated from each other relative to the cutting groove, and are clamped with the second clamping part on the nail magazine seat through the first clamping part on the nail magazine.

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