Nail bin assembly with knife

Abstract

The utility model discloses a staple cartridge assembly with a knife, which comprises a staple cartridge assembly main body, the staple cartridge assembly main body comprises a staple cartridge bracket and a staple cartridge box, the staple cartridge bracket is arranged at the bottom end of the staple cartridge box, an anastomosis staple is clamped in the staple cartridge box, and a protective cover is arranged on the surface of the anastomosis staple; by designing the band knife cutting anastomosis mechanism, a cutting knife can move forwards to push a beveling body to move forwards during operation and use, the surface of the cutting knife is in contact with a rolling body to drive the rolling body to roll in a rolling groove while the beveling body moves forwards, the beveling body moves to smoothly lift a push piece upwards, and the cutting knife cuts tissue after anastomosis; after anastomosis cutting is finished, the cutting knife is retreated in place again, the nail bin box and the cutting knife can be detached and replaced with a new one for use, disposable use is achieved, the situation that the sharpness of a cutting edge is reduced due to repeated use of the cutting knife is avoided, and therefore the cutting effect of the nail bin assembly body on cut tissue during use is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of staple cartridge assemblies, and particularly relates to a staple cartridge assembly with a knife. Background Art

[0002] The existing staple cartridge assembly is a medical device often used during surgical operations on physiological tissues such as the intestine. During use, the cutting knife moves forward to push the beveled body forward. The movement of the beveled body smoothly lifts the push piece upward. After anastomosis, the cutting knife cuts the tissue. After the anastomosis cutting is completed, the cutting knife is retracted to its original position again, and then the staple cartridge box and the cutting knife can be removed and replaced with new ones for single use, avoiding the reduction of the sharpness of the cutting edge caused by repeated use of the cutting knife, thereby improving the cutting effect of the staple cartridge assembly main body on the cutting tissue during use.

[0003] The existing staple cartridge assembly does not have a cutting knife during use. The cutting knife is generally assembled in the instrument body. During the operation, multiple cuts and anastomoses are required. Therefore, when the staple cartridge is replaced after single use, the cutting knife can only repeatedly cut the tissue and cannot be replaced. After multiple uses, the sharpness of the cutting edge of the cutting knife will decrease, affecting the cutting effect of the staple cartridge assembly when cutting tissue. For this reason, the utility model proposes a staple cartridge assembly with a knife. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a staple cartridge assembly with a knife to solve the problem that the staple cartridge assembly does not have a cutting knife during use. When the staple cartridge is replaced after single use during the operation, the cutting knife can only repeatedly cut the tissue and cannot be replaced. After multiple uses, the sharpness of the cutting edge of the cutting knife will decrease, affecting the cutting effect of the staple cartridge assembly when cutting tissue as mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A staple cartridge assembly with a knife, including a staple cartridge assembly main body, the staple cartridge assembly main body includes a staple cartridge bracket and a staple cartridge box. The staple cartridge bracket is arranged at the bottom end of the staple cartridge box. A staple is clamped inside the staple cartridge box, and a protective cover is arranged on the surface of the staple. The following are also arranged on the staple cartridge assembly main body:

[0006] A knife-equipped cutting and anastomosis mechanism, and this knife-equipped cutting and anastomosis mechanism includes a knife-equipped cutting component arranged at the end of the staple cartridge box. A moving and adjusting component is arranged at the connection between the lower surface of the knife-equipped cutting component and the staple cartridge box, and a rolling component is arranged on the upper surface of the knife-equipped cutting component.

[0007] A connection mechanism, and this connection mechanism includes a rotation and adjustment component arranged on both sides of the staple cartridge bracket. A clamping component is arranged at the end of the rotation and adjustment component, and a pressing and fixing component is arranged on both side surfaces of the staple cartridge bracket.

[0008] Preferably, the belt knife cutting assembly includes an inclined cutting body provided at the end of the staple cartridge, a cutting knife is snap-fitted at the end of the inclined cutting body, and a pushing piece is provided at the connection between the upper surface of the staple cartridge bracket and the lower surface of the staple cartridge.

[0009] Preferably, the moving and adjusting assembly includes a sliding groove opened at the middle position of the staple cartridge, a slider slides inside the sliding groove, and the end of the slider is fixedly connected to the lower surface of the inclined cutting body by a screw.

[0010] Preferably, the rolling assembly includes a rolling groove opened at the middle position of the upper surface of the inclined cutting body, and a rolling body rolls inside the rolling groove.

[0011] Preferably, the rotating and adjusting assembly includes limiting moving grooves opened on both sides of the staple cartridge bracket, a lead screw is rotatably connected inside the limiting moving grooves, and a rotating body is provided at the end of the lead screw inside the staple cartridge bracket.

[0012] Preferably, the snap-fitting assembly includes a snap head provided at one end inside the limiting moving groove, a limiting moving sliding head is provided at the end of the snap head, the lead screw passes through the inside of the limiting moving sliding head, and snap holes are opened on both sides of the staple cartridge, and the end of the snap head is snap-fitted with the inside of the snap hole.

[0013] Preferably, the extrusion and fixing assembly includes cover plates provided on both side surfaces of the staple cartridge bracket, elastic protrusions are provided at both ends of the cover plates, and the inner surface of the cover plates is in extrusion contact with the surface of the rotating body.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] By designing the belt knife cutting and anastomosis mechanism, when operating and using, the cutting knife moves forward to push the inclined cutting body forward. While the inclined cutting body moves forward, the surface of the cutting knife contacts the rolling body to drive the rolling body to roll inside the rolling groove, so that the inclined cutting body moves to smoothly lift the pushing piece upward. After anastomosis, the cutting knife cuts the tissue. After the anastomosis and cutting are completed, the cutting knife is retracted to the in-place again, and then the staple cartridge and the cutting knife can be removed and replaced with a new one for use. It is a one-time use, avoiding the reduction of the sharpness of the cutting edge caused by repeated use of the cutting knife, thereby improving the cutting effect of the staple cartridge assembly main body on the cutting tissue during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a partial cross-sectional structural diagram of the inclined cutting body, staple cartridge and pushing piece of the present utility model;

[0018] Figure 3 is the present utility model Figure 1Schematic diagram of the enlarged structure of part A;

[0019] Figure 4 Partial cross-sectional structure diagram of the connection between the staple cartridge bracket and the staple cartridge box of the present utility model;

[0020] Figure 5 Schematic diagram of the chuck and the limit moving slider of the present utility model;

[0021] In the figure: 100, staple cartridge assembly main body; 101, protective cover; 102, staple cartridge bracket; 1021, chuck; 1022, cover plate; 1023, card hole; 1024, limit moving slider; 1025, lead screw; 1026, elastic protrusion; 1027, rotating body; 1028, limit moving groove; 103, staple cartridge box; 1031, push piece; 1032, cutting knife; 1033, bevel cutting body; 1034, rolling body; 1035, sliding groove; 1036, slider; 1037, rolling groove; 104, anastomosis staple. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: a staple cartridge assembly with a knife, including a staple cartridge assembly main body 100, the staple cartridge assembly main body 100 includes a staple cartridge bracket 102 and a staple cartridge box 103, the staple cartridge bracket 102 is arranged at the bottom end of the staple cartridge box 103, an anastomosis staple 104 is clamped inside the staple cartridge box 103, a protective cover 101 is arranged on the surface of the anastomosis staple 104, and the following are further arranged on the staple cartridge assembly main body 100:

[0024] A knife-equipped cutting and anastomosis mechanism, and the knife-equipped cutting and anastomosis mechanism includes a knife-equipped cutting assembly arranged at the end of the staple cartridge box 103, a moving adjustment assembly is arranged at the connection between the lower surface of the knife-equipped cutting assembly and the staple cartridge box 103, and a rolling assembly is arranged on the upper surface of the knife-equipped cutting assembly. When the staple cartridge assembly main body 100 is in use, the knife-equipped cutting and anastomosis mechanism is convenient for simultaneous cutting and anastomosis operations during use, facilitating the disassembly and replacement of the cutting knife 1032, for single-use, avoiding the reduction of the sharpness of the cutting edge caused by the repeated use of the cutting knife 1032, thereby improving the cutting effect of the staple cartridge assembly main body 100 on the cutting tissue during use.

[0025] In order to facilitate the smooth anastomosis cutting during the operation of the staple cartridge assembly main body 100 by the band knife cutting assembly, in this embodiment, preferably, the band knife cutting assembly includes an oblique cutting body 1033 provided at the end of the staple cartridge 103. A cutting knife 1032 is snap-fitted and installed at the end of the oblique cutting body 1033. A push piece 1031 is provided at the connection between the upper surface of the staple cartridge bracket 102 and the lower surface of the staple cartridge 103 to facilitate the operation of the staple cartridge assembly main body 100. When the oblique cutting body 1033 moves forward, it drives the push piece 1031 to lift. When the push piece 1031 lifts, the anastomosis staples 104 perform tissue anastomosis. After anastomosis, the cutting knife 1032 performs tissue cutting.

[0026] In order to facilitate the forward movement of the oblique cutting body 1033 to push the push piece 1031 through the moving and adjusting assembly, in this embodiment, preferably, the moving and adjusting assembly includes a sliding groove 1035 opened at the middle position of the staple cartridge 103. A slider 1036 slides inside the sliding groove 1035. The end of the slider 1036 is fixedly connected to the lower surface of the oblique cutting body 1033 by screws. By sliding the slider 1036 inside the sliding groove 1035, the oblique cutting body 1033 is smoothly moved forward, so that the forward movement of the oblique cutting body 1033 drives the push piece 1031 to lift and operate.

[0027] In order to facilitate the smooth lifting of the push piece 1031 when the oblique cutting body 1033 moves through the rolling assembly, in this embodiment, preferably, the rolling assembly includes a rolling groove 1037 opened at the middle position of the upper surface of the oblique cutting body 1033. A rolling body 1034 rolls inside the rolling groove 1037. When the oblique cutting body 1033 moves, it contacts the surface of the rolling body 1034 with the push piece 1031, which facilitates the smooth lifting of the push piece 1031 when the oblique cutting body 1033 moves and is not prone to friction.

[0028] A connecting mechanism, and this connecting mechanism includes a rotation adjustment assembly provided on both sides of the staple cartridge bracket 102. A snap-fitting assembly is provided at the end of the rotation adjustment assembly. Extrusion fixing assemblies are provided on both side surfaces of the staple cartridge bracket 102. When the staple cartridge assembly main body 100 is in use, the staple cartridge bracket 102 and the staple cartridge 103 can be disassembled and assembled through the connecting mechanism, and the disassembly and assembly operations are convenient, the installation and use are more stable, and the convenience of disassembling and replacing the staple cartridge 103 when the staple cartridge assembly main body 100 is in use is improved.

[0029] In order to facilitate the movement and adjustment of the chuck 1021 for snap-fitting and installation through the rotation adjustment assembly, in this embodiment, preferably, the rotation adjustment assembly includes a limit movement groove 1028 opened on both sides of the staple cartridge bracket 102. A lead screw 1025 is rotatably connected inside the limit movement groove 1028. A rotating body 1027 is provided at the end of the lead screw 1025 inside the staple cartridge bracket 102. Holding the rotating body 1027 drives the lead screw 1025 to rotate, which facilitates the rotation adjustment operation of the lead screw 1025.

[0030] In order to facilitate the quick snap - fit installation operation of the staple cartridge bracket 102 and the staple cartridge 103 through the snap - fit component, and conversely, to facilitate disassembly and replacement. In this embodiment, preferably, the snap - fit component includes a chuck 1021 provided at one end inside the limit movement groove 1028. A limit movement slider 1024 is provided at the end of the chuck 1021. The lead screw 1025 passes through the inside of the limit movement slider 1024. When the lead screw 1025 rotates, it can drive the limit movement slider 1024 to move on the outer surface of the lead screw 1025. When the limit movement slider 1024 moves, it drives the chuck 1021 to move and snap - fit. Card holes 1023 are provided on both sides of the staple cartridge 103. The end of the chuck 1021 is engaged with the inside of the card hole 1023 until the chuck 1021 is moved and snapped into the inside of the card hole 1023 to fixedly install the staple cartridge bracket 102 and the staple cartridge 103 by snap - fit.

[0031] In order to facilitate the surface extrusion and fixation of the rotating body 1027 through the extrusion rolling component, and to facilitate fixed installation and prevent loosening due to force. In this embodiment, preferably, the extrusion fixation component includes cover plates 1022 provided on both side surfaces of the staple cartridge bracket 102. Elastic protrusions 1026 are provided at both ends of the cover plates 1022. The inner surface of the cover plates 1022 is in extrusion contact with the surface of the rotating body 1027. The cover plates 1022 are snap - fitted on the surface of the staple cartridge bracket 102 through the elastic protrusions 1026. The inner surface of the cover plates 1022 is in extrusion contact with the rotating body 1027 for reinforcement installation, which is easy to reinforce after snap - fit.

[0032] The working principle and usage process of the present utility model: For this kind of staple cartridge component with a knife, before use, the push piece 1031 can be placed on the upper surface of the staple cartridge bracket 102. Then, the staple cartridge 103 is placed on the surface of the staple cartridge bracket 102. The end of the push piece 1031 is embedded in the inside of the staple cartridge 103. After placing the staple cartridge 103, hold the rotating body 1027 and drive the lead screw 1025 to rotate. When the lead screw 1025 rotates, it drives the limit movement slider 1024 to move on the outer surface of the lead screw 1025, driving the chuck 1021 to move and snap - fit into the inside of the card hole 1023. After snap - fit installation, the cover plates 1022 are again snap - fitted and pressed against the surface of the rotating body 1027 through the elastic protrusions 1026, which is convenient for snap - fitting and fixing the staple cartridge bracket 102 and the staple cartridge 103, facilitating fixed installation and use. And when disassembling and replacing the staple cartridge 103, perform the reverse operation for disassembly and replacement. Compared with the existing method of using a lever for disassembly and assembly, it is simple, convenient, not easily damaged, and the installation and use are more stable, improving the convenience of disassembling and replacing the staple cartridge 103 when the staple cartridge component main body 100 is in use.

[0033] Then, when the staple cartridge assembly body 100 is in use, after the staple cartridge 103 is fixed to the staple cartridge bracket 102, the anastomosis staples 104 are engaged inside the staple cartridge 103, and the cutting knife 1032 is engaged at the end of the bevel cutting body 1033. During operation, the cutting knife 1032 moves forward to push the bevel cutting body 1033 forward. While the bevel cutting body 1033 is moving forward, the end of the bevel cutting body 1033 raises the end of the push piece 1031. Continuing to raise it will bring the surface of the push piece 1031 into contact with the rolling body 1034, driving the rolling body 1034 to roll inside the rolling groove 1037, so that the bevel cutting body 1033 moves to smoothly lift the push piece 1031 upward. When the push piece 1031 is lifted, the anastomosis staples 104 perform tissue anastomosis. After anastomosis, the cutting knife 1032 performs tissue cutting. After the anastomosis and cutting are completed, the cutting knife 1032 is retracted to its original position again. Then, the staple cartridge 103 can be removed and replaced with a new one for use. At the same time, it is convenient to disassemble and replace the cutting knife 1032. It is for single use to avoid the reduction of the sharpness of the cutting edge caused by the repeated use of the cutting knife 1032, thereby improving the cutting effect of the staple cartridge assembly body 100 on the cutting tissue during use.

[0034] Although the embodiments of the present invention have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A staple cartridge assembly with a knife, comprising a staple cartridge assembly body (100), wherein the staple cartridge assembly body (100) comprises a staple cartridge bracket (102) and a staple cartridge box (103), wherein the staple cartridge bracket (102) is arranged at the bottom end of the staple cartridge box (103), wherein staples (104) are engaged inside the staple cartridge box (103), and a protective cover (101) is arranged on the surface of the staples (104), wherein: The staple cartridge assembly body (100) is also provided with: A knife cutting and anastomosis mechanism, wherein the knife cutting and anastomosis mechanism comprises a knife cutting assembly arranged at the end of a staple cartridge box (103), a movable adjustment assembly being arranged at the connection between the lower surface of the knife cutting assembly and the staple cartridge box (103), and a rolling assembly being arranged on the upper surface of the knife cutting assembly; The connecting mechanism comprises a rotation adjustment assembly arranged on both sides of a nail magazine bracket (102), a clamping assembly is arranged at the end of the rotation adjustment assembly, and a pressing fixing assembly is arranged on both side surfaces of the nail magazine bracket (102).

2. A nail magazine assembly with a knife according to claim 1, characterized in that: The knife cutting assembly comprises a beveled body (1033) arranged at the end of the nail magazine box (103), a cutting knife (1032) is mounted on the end of the beveled body (1033), and a push piece (1031) is arranged at the connection between the upper surface of the nail magazine bracket (102) and the lower surface of the nail magazine box (103).

3. A nail magazine assembly with a knife according to claim 2, characterized in that: The movable adjustment component comprises a slide groove (1035) opened at the middle position of the nail magazine box (103), a slider (1036) slides inside the slide groove (1035), and the end of the slider (1036) is fixedly connected to the lower surface of the bevel body (1033) by screws.

4. A nail magazine assembly with a knife according to claim 2, characterized in that: The rolling assembly comprises a rolling groove (1037) opened at the middle position of the upper surface of the beveled body (1033), and a rolling body (1034) rolls inside the rolling groove (1037).

5. The nail magazine assembly with a knife according to claim 1, characterized in that: The rotation adjustment assembly comprises limit movement grooves (1028) provided on both sides of the nail magazine bracket (102), the interior of the limit movement grooves (1028) is rotatably connected with a screw rod (1025), and the end of the screw rod (1025) is located inside the nail magazine bracket (102) and is provided with a rotating body (1027).

6. A nail magazine assembly with a knife according to claim 5, characterized in that: The engaging assembly comprises a clamping head (1021) arranged at one end inside the limiting movable groove (1028); a limiting movable slider (1024) is arranged at the end of the clamping head (1021); the screw rod (1025) passes through the inside of the limiting movable slider (1024); clamping holes (1023) are provided on both sides of the nail magazine box (103); and the end of the clamping head (1021) is engaged with the inside of the clamping hole (1023).

7. The nail magazine assembly with a knife according to claim 5, characterized in that: The pressing and fixing assembly comprises a cover plate (1022) arranged on the two side surfaces of the nail magazine bracket (102), and elastic protrusions (1026) are arranged at both ends of the cover plate (1022), and the inner surface of the cover plate (1022) presses and contacts the surface of the rotating body (1027).

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