Blade assembly and stapler

Abstract

This utility model belongs to the field of medical device technology and discloses a blade assembly and a stapler. The blade assembly includes a housing, a blade head, an adjustment structure, and a handle structure. The blade head is located inside the housing and includes a body, a slider located at the top of the body, a guide block located at the bottom of the body, and a cutting edge located in the lower middle part of the body. The slider can move back and forth in the track of the mounting base, the guide block can move back and forth in the track of the anvil, and the front part of the cutting edge can abut against and push the staple pusher forward in the track of the staple cartridge. The adjustment structure is located inside the housing and is connected to the blade head through a connecting structure. The end of the connecting structure away from the blade head is connected to the handle structure. The blade assembly is stable and reliable. The adjustment structure is connected to the blade head through the connecting structure. When the blade head rotates under external force, the connecting structure can move or deform, allowing the blade head to be angled and flexibly adapted to different surgical sites. The stapler includes the above-mentioned blade assembly.

Description

Technical Field

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

[0002] Anastomosing devices are medical devices used to replace manual suturing. Their main working principle is to use titanium staples to separate or anastomose tissue, similar to a stapler. Depending on their application, they can be mainly divided into skin anastomosing devices, digestive tract circular anastomosing devices, rectal anastomosing devices, circular hemorrhoid anastomosing devices, circumcision anastomosing devices, vascular anastomosing devices, hernia anastomosing devices, and lung cutting and suturing devices. The anastomosing device was the world's first stapler and has been used for gastrointestinal anastomosis for nearly a century. It wasn't until 1978 that tubular anastomosing devices were widely used in gastrointestinal surgery. They are generally classified as disposable or reusable anastomosing devices, and imported or domestically produced anastomosing devices. As a medical device that replaces traditional manual suturing, due to the development of modern technology and improvements in manufacturing techniques, clinically used anastomosing devices are reliable, easy to use, and provide a tight and appropriate fit. In particular, their advantages include rapid suturing, simple operation, and few side effects and surgical complications. They have also enabled the removal of tumors that were previously inoperable.

[0003] Traditional staplers have some problems in use, such as unstable suturing. In situations where they need to be bent to adapt to different surgical sites, the flexibility and applicability of traditional staplers are limited.

[0004] Therefore, there is an urgent need for a blade assembly and an anastomosis device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a blade assembly and a stapler that solves the problems of unstable operation, limited flexibility and applicability of traditional staplers. The blade assembly and stapler are stable and reliable, and the blade head can be angled to achieve flexible adaptation to different surgical sites.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A blade assembly, comprising:

[0008] case;

[0009] The cutter head is located inside the housing. The cutter head includes a body, a slider located at the top of the body, a guide block located at the bottom of the body, and a cutting edge located in the lower part of the body. The slider can move back and forth in the track of the mounting base, the guide block can move back and forth in the track of the nail holder, and the front part of the cutting edge can abut against and push the nail pusher forward in the track of the nail box.

[0010] An adjustment structure is disposed within the housing. The adjustment structure is connected to the cutter head via a connecting structure. A handle structure is connected to the end of the connecting structure away from the cutter head. The handle structure is used to drive the movement of the connecting structure.

[0011] In some possible implementations, the connection structure includes a first piece group and a second piece group, one end of the first piece group is fixedly connected to the cutter head, and the other end of the first piece group is connected to the second piece group through the adjustment structure, which can adjust the included angle between the first piece group and the second piece group.

[0012] In some possible implementations, both the first and second piece groups include a plurality of connecting pieces arranged in parallel.

[0013] In some possible implementations, both the first and second piece groups include four connecting pieces arranged in parallel.

[0014] In some possible implementations, the adjustment structure includes a plurality of interlocking flexible sleeves, with the first group of pieces connected to the flexible sleeve at the beginning and the second group of pieces connected to the flexible sleeve at the end.

[0015] In some possible implementations, three flexible sleeves are provided.

[0016] In some possible implementations, the first piece group is welded to the flexible sleeve, the second piece group is welded to the flexible sleeve, and the first piece group is welded to the cutter head.

[0017] In some possible implementations, the connecting structure is configured as a flexible wire, and the adjusting structure includes an annular mounting sleeve connected to the housing and a rotating ball hinged to the annular mounting sleeve, with the flexible wire fixedly inserted inside the rotating ball.

[0018] In some possible implementations, the flexible wire is configured as a nickel-titanium flexible wire.

[0019] The stapler includes a blade assembly as described in any of the above embodiments.

[0020] The beneficial effects of this utility model are as follows: The blade assembly provided by this utility model includes a body, a slider disposed on the top of the body, a guide block disposed on the bottom of the body, and a blade disposed in the lower middle part of the body. The slider can move back and forth in the track of the staple cartridge mounting seat, the guide block can move back and forth in the track of the staple holder, and the front part of the blade can abut against and push the staple pusher forward in the track of the staple cartridge, so that the blade head is stable and reliable when it operates. The adjustment structure is connected to the blade head through the connecting structure. The connecting structure drives the blade head to rotate at a certain angle, so that the blade head can be angled and flexibly adapted to different surgical sites.

[0021] This utility model also provides a stapler, including the above-mentioned blade assembly. The blade of this stapler can flexibly adapt to different surgical needs, has a wide range of applications, and is reliable in use. Attached Figure Description

[0022] Figure 1 This is a three-dimensional view of the blade assembly of the first embodiment from one perspective provided in this utility model embodiment;

[0023] Figure 2 This is a three-dimensional view of the blade assembly of the first embodiment from another perspective provided by this utility model.

[0024] Figure 3 This is a diagram showing the state of the blade assembly when bent according to the first embodiment of this utility model.

[0025] Figure 4 This is a state diagram of the blade assembly in the first embodiment of the present utility model when it is in a straight line;

[0026] Figure 5 This is a three-dimensional view of the blade assembly of the second embodiment from one perspective provided in this utility model embodiment;

[0027] Figure 6 This is an assembly diagram of the annular mounting sleeve and rotating ball provided in this embodiment of the utility model.

[0028] In the picture:

[0029] 100. Cutting head; 110. Body; 120. Slider; 130. Guide block; 140. Cutting edge; 210. Flexible sleeve; 220. Annular mounting sleeve; 230. Rotating ball; 310. First piece group; 320. Second piece group; 330. Flexible wire. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] The blade assembly and stapler provided in this embodiment are designed to solve the problems of unstable operation, limited flexibility and applicability of traditional staplers. The blade assembly and stapler are stable and reliable, and the blade head can be angled to achieve flexible adaptation to different surgical sites.

[0035] See Figures 1 to 6The blade assembly includes a housing, a blade head 100, an adjustment structure, and a handle structure. The blade head 100 is housed within the housing and includes a body 110, a slider 120 at the top of the body 110, a guide block 130 at the bottom of the body 110, and a cutting edge 140 located in the lower middle part of the body 110. The slider 120 can move back and forth in the track of the mounting base, the guide block 130 can move back and forth in the track of the nail holder, and the front part of the cutting edge 140 can abut against and push the nail pusher forward in the track of the nail cartridge. The adjustment structure is housed within the housing and is connected to the blade head 100 via a connecting structure. A handle structure is connected to the end of the connecting structure away from the blade head 100, and the handle structure is used to drive the movement of the connecting structure. The handle structure is prior art and will not be described in detail here.

[0036] The aforementioned blade assembly includes a blade head 100 comprising a body 110, a slider 120 disposed on the top of the body 110, a guide block 130 disposed on the bottom of the body 110, and a blade 140 disposed in the lower middle part of the body 110. The slider 120 can move back and forth in the track of the staple cartridge mounting base, the guide block 130 can move back and forth in the track of the staple holder, and the front part of the blade 140 can abut against and push the staple pusher forward in the track of the staple cartridge, so that the blade head 100 is stable and reliable when it operates. The adjustment structure is connected to the blade head 100 through a connecting structure. When the blade head 100 rotates under the action of external force, the connecting structure can move or deform, so that the blade head 100 can be angled to achieve flexible adaptation to different surgical sites.

[0037] In one embodiment, the connecting structure includes a first piece group 310 and a second piece group 320. One end of the first piece group 310 is fixedly connected to the cutter head 100, and the other end of the first piece group 310 is connected to the second piece group 320 through an adjusting structure. The adjusting structure can adjust the included angle between the first piece group 310 and the second piece group 320, thereby allowing the cutter head 100 connected to the end of the first piece group 310 to rotate by a certain angle. Optionally, both the first piece group 310 and the second piece group 320 include multiple connecting pieces arranged in parallel. During the cutting process, the multiple connecting pieces can assist the cutter head 100 in working simultaneously, improving cutting efficiency and stability. In this embodiment, both the first piece group 310 and the second piece group 320 include four connecting pieces arranged in parallel. In other embodiments, both the first piece group 310 and the second piece group 320 may each include three or five connecting pieces, etc., as needed.

[0038] Optionally, the adjustment structure includes multiple interlocking flexible sleeves 210. The first group 310 is connected to the flexible sleeve 210 at the beginning, and the second group 320 is connected to the flexible sleeve 210 at the end. When the cutter head 100 bends under external force, the first group 310 causes the flexible sleeves 210 to deform, allowing the cutter head 100 to complete an angular rotation. Specifically, adjacent flexible sleeves 210 are fixedly connected, for example, by threaded connections or snap-fits. In this embodiment, three flexible sleeves 210 are provided. In other embodiments, four or five flexible sleeves 210 can be provided, depending on the need.

[0039] In this embodiment, the first piece group 310 is welded to the flexible sleeve 210, and the second piece group 320 is welded to the flexible sleeve 210; the first piece group 310 is also welded to the cutter head 100. Welding ensures high strength between the connecting parts and is relatively inexpensive.

[0040] In another embodiment, the connecting structure is configured as a flexible wire 330, and the adjusting structure includes an annular mounting sleeve 220 connected to the housing and a rotating ball 230 hinged within the annular mounting sleeve 220. The flexible wire 330 is fixedly inserted within the rotating ball 230. This configuration allows the cutter head 100 to rotate axially and radially. Optionally, the annular mounting sleeve 220 includes two detachably connected half-mounting sleeves to facilitate the installation of the rotating ball 230. Specifically, the two half-mounting sleeves are connected by threaded connections. Preferably, the flexible wire 330 is a nickel-titanium flexible wire 330, which has high elasticity and can well recover its original shape after being deformed by external force.

[0041] Optionally, the outer circumferential surface of the annular mounting sleeve 220 is provided with a plurality of evenly distributed connecting protrusions, which are installed on the housing by threaded parts for easy disassembly and assembly.

[0042] This embodiment also provides a stapler, including the blade assembly described above. The blade head 100 of the stapler can flexibly adapt to different surgical needs, has a wide range of applications, and is reliable in use.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A blade assembly characterized by, include: case; A cutting head (100) is disposed inside the housing. The cutting head (100) includes a body (110), a slider (120) disposed on the top of the body (110), a guide block (130) disposed on the bottom of the body (110), and a cutting edge (140) disposed in the lower part of the body (110). The slider (120) can move back and forth in the track of the mounting base, the guide block (130) can move back and forth in the track of the nail holder, and the front part of the cutting edge (140) can abut against and push the nail pusher forward in the track of the nail cartridge. An adjustment structure is provided inside the housing. The adjustment structure is connected to the cutter head (100) through a connecting structure. A handle structure is connected to the end of the connecting structure away from the cutter head (100). The handle structure is used to drive the connecting structure to move.

2. The blade assembly of claim 1, wherein, The connection structure includes a first piece group (310) and a second piece group (320). One end of the first piece group (310) is fixedly connected to the cutter head (100), and the other end of the first piece group (310) is connected to the second piece group (320) through the adjustment structure. The adjustment structure can adjust the included angle between the first piece group (310) and the second piece group (320).

3. The blade assembly of claim 2, wherein, Both the first piece group (310) and the second piece group (320) include multiple connecting pieces arranged in parallel.

4. The blade assembly of claim 3, wherein, Both the first piece group (310) and the second piece group (320) include four connecting pieces arranged in parallel.

5. The blade assembly of claim 2, wherein, The adjustment structure includes a plurality of interlocking flexible sleeves (210), the first piece group (310) is connected to the flexible sleeve (210) at the beginning, and the second piece group (320) is connected to the flexible sleeve (210) at the end.

6. The blade assembly according to claim 5, characterized in that, The flexible sleeve (210) is provided in three parts.

7. The blade assembly of claim 5, wherein, The first piece group (310) is connected to the flexible sleeve (210) by welding, the second piece group (320) is connected to the flexible sleeve (210) by welding, and the first piece group (310) is connected to the cutter head (100) by welding.

8. The blade assembly of claim 1, wherein, The connecting structure is configured as a flexible wire (330), and the adjusting structure includes an annular mounting sleeve (220) connected to the housing and a rotating ball (230) hinged in the annular mounting sleeve (220). The flexible wire (330) is fixedly inserted into the rotating ball (230).

9. The blade assembly of claim 8, wherein, The flexible wire (330) is configured as a nickel-titanium flexible wire (330).

10. A stapler, characterized in that, Includes the blade assembly as described in any one of claims 1-9.

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