Anastomat and anastomosis nail pushing mechanism thereof

Abstract

The utility model discloses an anastomat and an anastomosis nail pushing mechanism thereof, and relates to the medical technical field, the anastomat comprises a shell, one side of the shell is provided with a handle, one end of the handle is fixedly connected with a nail anvil, one side of the top of the handle is provided with a locking mechanism, and the inner side of one end of the handle is inserted with a nail bin. Through cooperation of an elastic piece and a clamping block, the nail bin can be rapidly inserted and preliminarily fixed, basic guarantee is provided for follow-up operation, a first moving plate stably moves along a sliding groove, elastic tension storage and stable movement of the device are ensured through the combination of the action of a second fixing rod and a second tension spring, and in the reset process, through cooperation of an inserting rod and a positioning hole, the device is reset stably. Final firm inserting connection is achieved, the stability of the nail bin is greatly improved through the double-locking function of the clamping block, disassembly and replacement are more convenient and faster through the modular design, the requirements for efficient and flexible operation are met, and the reliability of the device is enhanced through the overall structure.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a stapler and its staple delivery mechanism. Background Technology

[0002] The working principle of a stapler is to use a mechanical device to fasten tissues together, replacing traditional manual suturing. Inside the stapler are one or more rows of staples, which are usually made of metal (such as titanium alloys) and have good biocompatibility, generally not causing serious adverse reactions after implantation in the human body.

[0003] For example, CN215688168U discloses a stapler cartridge assembly, including a stapler cartridge, a stapler cartridge seat, and an elastic element. The stapler cartridge seat has slots on both side walls, a limiting part at the front end of the slot, and an upward opening at the rear end of the slot. The stapler cartridge has a protrusion on its outer side wall that mates with the slot. The elastic element is disposed between the stapler cartridge and the stapler cartridge seat. When the stapler cartridge is pressed backward and downward, the elastic element is in a compressed state, and the protrusion is opposite to the opening. When the stapler cartridge is released, the protrusion is located in the slot and is opposite to the limiting part.

[0004] However, in existing technologies, the traditional stapler uses a relatively simple method to fix the staple cartridge, mainly relying on simple slots and pins for connection. In daily medical practice, staplers often need to be installed and removed frequently to facilitate maintenance work such as cleaning, disinfection, and replacement of parts. However, this frequent insertion and removal process will generate continuous friction and compression on the slots and pins, and the surface material of the slots and pins will gradually be worn down. Their original tight fit shape and size will also change, and the connection will be greatly reduced. Once the connection is affected, problems such as loosening and displacement of the staple cartridge will occur during the operation. Utility Model Content

[0005] The purpose of this invention is to address the problem that the surface material of the slots and pins in the prior art will gradually wear down, and their original tightly fitting shape and size will also change, greatly reducing the firmness of the connection. Once the firmness of the connection is affected, problems such as loosening and displacement of the staple cartridge will occur during the operation. Therefore, this invention proposes a stapler and its staple pushing mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a stapler, including a housing, a handle installed on one side of the housing, an anvil fixedly connected to one end of the handle, a locking mechanism installed on one side of the top of the handle, and a staple cartridge inserted into the inner side of one end of the handle;

[0007] The locking mechanism includes two second side plates. The side walls of the second side plates are provided with sliding grooves. A sliding block is slidably connected to the inner side of the sliding groove. A fixed plate is fixedly connected to one side of the sliding block. A first movable plate is fixedly connected to one end of the fixed plate. A second fixed rod is fixedly connected to both sides of the first movable plate. A second tension spring is snapped onto the outer surface of the second fixed rod. One end of the second tension spring is snapped onto the first fixed rod. One end of the first fixed rod is fixedly connected to the first side plate. A first movable plate is fixedly connected to one end of the first side plate. A plug rod is fixedly connected to one side of the first movable plate.

[0008] Preferably, the staple cartridge has insertion slots on both sides and a positioning hole at one end.

[0009] Preferably, elastic sheets are fixedly connected to both sides of the handle, and a locking block is fixedly connected to one side of the top of the elastic sheet.

[0010] Preferably, the card block is inserted into the insertion slot, and the positioning hole is inserted into the insertion rod.

[0011] Preferably, the first side plate is fixedly connected to the handle, and the top of the handle has a groove that engages with the staple cartridge.

[0012] Preferably, a handle is installed at the bottom of the housing.

[0013] A staple pushing mechanism includes a pushing member, the pushing member including a staple pushing rod, a power rod fixedly connected to the inner wall of the staple pushing rod, and the power rod slidably mounted on the inside of the handle.

[0014] Preferably, a first tension spring is snapped onto the top of one end of the power rod, and a hook block is snapped onto one end of the first tension spring, with the hook block fixedly installed inside the housing.

[0015] Preferably, two second movable plates are fixedly connected to the top end of the push rod, and a control block is fixedly connected to one end of each second movable plate. The control block is slidably connected to the housing.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this utility model, the combination of elastic sheet and locking block enables the staple cartridge to be quickly inserted and initially fixed, providing a basic guarantee for subsequent operations. The first moving plate moves smoothly along the slide groove, and the action of the second fixing rod and the second tension spring ensures the elastic tension reserve and smooth movement of the device. The reset process achieves the final firm insertion through the cooperation of the insertion rod and the positioning hole. The double locking function of the locking block greatly improves the stability of the staple cartridge. The modular design makes disassembly and replacement more convenient, meeting the needs of efficient and flexible operation. The overall structure enhances the reliability of the device.

[0018] 2. In this utility model, the precise adjustment of the push rod is achieved by manually controlling two control blocks, ensuring the flexibility and accuracy of the push rod operation. The stable connection between the push rod and the power rod avoids detachment or displacement, ensuring that the staples are smoothly pushed to the anvil for precise suturing. The synergistic effect of the hook block and the first tension spring ensures that after the push rod drives the power rod to complete the push, the first tension spring quickly releases its elastic restoring force, pulling the power rod back to its initial position. This simplifies the operation and improves work efficiency. The synchronous reset mechanism provides ample space for subsequent staple cartridge replacement. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a stapler and its staple pushing mechanism proposed in this utility model.

[0020] Figure 2 This is a partial three-dimensional structural diagram of a stapler and its staple pushing mechanism proposed in this utility model.

[0021] Figure 3 This is a three-dimensional structural diagram of the locking mechanism of a stapler and its staple pushing mechanism proposed in this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the pusher component of the anastomosis device and its anastomosis staple pushing mechanism proposed in this utility model.

[0023] Legend: 1. Housing; 2. Handle; 3. Handle; 31. Groove; 32. Elastic sheet; 33. Locking block; 34. First side plate; 4. Anvil; 5. Nail cartridge; 51. Insertion groove; 52. Positioning hole; 6. Locking mechanism; 61. Second side plate; 62. First fixing rod; 63. Slide groove; 64. First moving plate; 65. Insertion rod; 66. Fixing plate; 67. Second fixing rod; 68. Second tension spring; 69. Sliding block; 7. Pushing component; 71. Power rod; 72. Nail pusher; 73. First tension spring; 74. Second moving plate; 75. Control block; 76. Hook block. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1: As Figure 1 - Figure 3 As shown, this utility model provides a stapler, including a housing 1, a handle 3 installed on one side of the housing 1, a staple anvil 4 fixedly connected to one end of the handle 3, a locking mechanism 6 installed on one side of the top of the handle 3, and a staple cartridge 5 inserted into the inner side of one end of the handle 3.

[0027] The locking mechanism 6 includes two second side plates 61. The side wall of the second side plate 61 is provided with a sliding groove 63. A sliding block 69 is slidably connected to the inner side of the sliding groove 63. A fixed plate 66 is fixedly connected to one side of the sliding block 69. A first movable plate 64 is fixedly connected to one end of the fixed plate 66. A second fixed rod 67 is fixedly connected to both sides of the first movable plate 64. A second tension spring 68 is snapped onto the outer surface of the second fixed rod 67. A first fixed rod 62 is snapped onto one end of the second tension spring 68. One end of the first fixed rod 62 is fixedly connected to the first side plate 34. A first movable plate 64 is fixedly connected to one end of the first side plate 34. A plug-in rod 65 is fixedly connected to one side of the first movable plate 64.

[0028] Both sides of the staple cartridge 5 have insertion slots 51, and one end of the staple cartridge 5 has a positioning hole 52. Both sides of the handle 3 are fixedly connected to elastic pieces 32, and a locking block 33 is fixedly connected to one side of the top of the elastic piece 32. The locking block 33 is inserted into the insertion slot 51, and the positioning hole 52 is inserted into the insertion rod 65. The first side plate 34 is fixedly connected to the handle 3, and the top of the handle 3 has a groove 31 that engages with the staple cartridge 5. A handle 2 is installed at the bottom of the housing 1.

[0029] The specific settings and functions of this embodiment will be described in detail below. When installing the staple cartridge 5, the insertion slot 51 must first be accurately inserted into the inner side of one end of the handle 3, while ensuring that the staple cartridge 5 and the groove 31 are firmly engaged. During this engagement process, relying on the elastic deformation properties of the elastic sheet 32, the locking block 33 can quickly insert through the insertion slot 51 and initially fix the position of the staple cartridge 5. At this time, the staple cartridge 5 has a certain degree of stability, providing a basic guarantee for subsequent operations.

[0030] While installing the staple cartridge 5, the movable design of the first moving plate 64 provides excellent dynamic adaptability. The first moving plate 64 can move along the trajectory of the slide groove 63. During the movement, through cooperation with the second fixed rod 67, the second tension spring 68 is pulled into a stretched state, giving the entire device a certain elastic tension reserve during movement. To ensure the smooth movement of the first moving plate 64 in the slide groove 63, the design of the sliding block 69 provides a reliable guiding function, avoiding skewing or jamming caused by lateral forces, thus ensuring the smooth progress of the entire installation process.

[0031] Once the staple cartridge 5 is in place, the elasticity of the second tension spring 68 will automatically pull the first moving plate 64 to perform a reset operation. During the reset process, the first moving plate 64 will drive the insertion rod 65 into the positioning hole 52 through structural transmission, completing the final insertion with the staple cartridge 5. This insertion method not only utilizes the rigid support of the insertion rod 65, but also combines the double locking function of the locking block 33, greatly improving the stability of the staple cartridge 5 after installation. In this way, even in high-frequency use or vibration environments, the staple cartridge 5 will not loosen and displace.

[0032] Furthermore, the modular design of the device makes the disassembly and replacement of the staple cartridge 5 equally convenient. Simply reverse the operation and pull handle 2 to release the locking mechanism, and the staple cartridge 5 can be quickly removed from the device, meeting the needs for high efficiency in operation and flexibility in usage scenarios. The overall structure enhances the reliability of the device.

[0033] Example 2: Figure 1 and Figure 4 As shown, a staple pushing mechanism includes a pushing member 7, which includes a push rod 72. A power rod 71 is fixedly connected to the inner wall of the push rod 72, and the power rod 71 is slidably mounted inside the handle 3. A first tension spring 73 is engaged at the top of one end of the power rod 71, and a hook block 76 is engaged at the other end of the first tension spring 73. The hook block 76 is fixedly mounted inside the housing 1. Two second moving plates 74 are fixedly connected to the top of the push rod 72, and a control block 75 is fixedly connected to one end of each second moving plate 74. The control block 75 is slidably connected to the housing 1.

[0034] The overall effect of this embodiment is that, during staple pushing, the operator can flexibly adjust the direction and range of movement of the staple pusher 72 by manually controlling two control blocks 75, ensuring operational precision. When the staple pusher 72 slides along a specific guide under the constraint of the handle 3, it drives the power rod 71 to move synchronously. This design not only ensures a stable connection between the staple pusher 72 and the power rod 71, but also effectively prevents disengagement or deviation during complex operations. During movement, the power rod 71 uses its front-end pushing force to act on the staples inside the staple cartridge 5, causing the staples to be pushed sequentially towards the position of the anvil 4. With the cooperation of the anvil 4, the staples complete the precise suturing operation of the tissue one by one. Simultaneously, the movement of the staple pusher 72, through its synergistic action with the hook block 76, pulls the connected first tension spring 73, causing the first tension spring 73 to gradually stretch and store elastic potential energy. When the power rod 71 completes the preset pushing operation, the operator releases the control block 75, and the elastic potential energy of the first tension spring 73 is immediately released. Through this elastic restoring force, the first tension spring 73 quickly pulls the power rod 71 back to its initial position, completing the reset process. This elastic reset mechanism not only effectively simplifies the operation steps but also significantly improves work efficiency. At the same time, the push rod 72 also resets synchronously under the drive of the power rod 71, providing ample space for subsequent replacement of the nail cartridge 5.

[0035] The device is used as follows: It is operated via handle 2. When installing the staple cartridge 5, first insert the insertion slot 51 into the inside of one end of the handle 3, causing the staple cartridge 5 to engage with the groove 31. During engagement, the elasticity of the elastic piece 32 causes the claws of the locking block 33 to engage with the insertion slot 51, thus completing the installation. After engagement, the staple cartridge 5 can be initially locked.

[0036] During installation, the first movable plate 64 is movable. When the first movable plate 64 moves, it pulls the second tension spring 68 through the second fixed rod 67, putting the second tension spring 68 in a stretched state. At the same time, the slide groove 63 restricts the sliding block 69, ensuring that the sliding block 69 slides inside the slide groove 63, preventing the first movable plate 64 from tilting during movement.

[0037] After the staple cartridge 5 is installed, the elasticity of the second tension spring 68 will pull the first moving plate 64 back to its original position, causing the insertion rod 65 to be inserted into the positioning hole 52. The double locking of the insertion rod 65 and the locking block 33 can enhance the firmness of the staple cartridge 5 and prevent loosening.

[0038] During staple delivery, the staple pusher 72 is moved by manually controlling two control blocks 75. As the staple pusher 72 slides under the constraint of the handle 3, it moves the drive rod 71. The drive rod 71 pushes the staples inside the staple cartridge 5, working in conjunction with the anvil 4 to complete the suture. Simultaneously, the movement of the staple pusher 72 drives the hook block 76, pulling the first tension spring 73. When the drive rod 71 completes the push, the control blocks 75 are released, and the elasticity of the first tension spring 73 returns the drive rod 71 to its original position. This resets the staple pusher 72 along with the drive rod 71, preparing for changing the staple cartridge 5 and performing the next suture.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A stapler, comprising a housing (1), a handle (3) mounted on one side of the housing (1), and an anvil (4) fixedly connected to one end of the handle (3), characterized in that: A locking mechanism (6) is installed on one side of the top of the handle (3), and a nail cartridge (5) is inserted into the inner side of one end of the handle (3). The locking mechanism (6) includes two second side plates (61). The side wall of the second side plate (61) is provided with a sliding groove (63). A sliding block (69) is slidably connected to the inner side of the sliding groove (63). A fixed plate (66) is fixedly connected to one side of the sliding block (69). A first moving plate (64) is fixedly connected to one end of the fixed plate (66). A second fixed rod (67) is fixedly connected to both sides of the first moving plate (64). A second tension spring (68) is snapped onto the outer surface of the second fixed rod (67). A first fixed rod (62) is snapped onto one end of the second tension spring (68). One end of the first fixed rod (62) is fixedly connected to the first side plate (34). A first moving plate (64) is fixedly connected to one end of the first side plate (34). A plug rod (65) is fixedly connected to one side of the first moving plate (64).

2. The stapler according to claim 1, characterized in that: Both sides of the staple cartridge (5) are provided with insertion slots (51), and one end of the staple cartridge (5) is provided with a positioning hole (52).

3. The anastomosis device according to claim 2, characterized in that: Both sides of the handle (3) are fixedly connected with elastic plates (32), and a locking block (33) is fixedly connected to one side of the top of the elastic plate (32).

4. The stapler according to claim 3, characterized in that: The card block (33) is inserted into the insertion slot (51), and the positioning hole (52) is inserted into the insertion rod (65).

5. The anastomosis device according to claim 1, characterized in that: The first side plate (34) is fixedly connected to the handle (3), and the top of the handle (3) is provided with a groove (31), which is engaged with the nail cartridge (5).

6. The stapler according to claim 1, characterized in that: A handle (2) is installed at the bottom of the housing (1).

7. A staple delivery mechanism, characterized in that, The stapler used in any one of claims 1-6 includes a pusher (7), the pusher (7) including a push rod (72), the inner wall of the push rod (72) is fixedly connected to a power rod (71), and the power rod (71) is slidably mounted on the inner side of the handle (3).

8. The staple pushing mechanism according to claim 7, characterized in that: The top of one end of the power rod (71) is fitted with a first tension spring (73), and the other end of the first tension spring (73) is fitted with a hook block (76). The hook block (76) is fixedly installed inside the housing (1).

9. The staple pushing mechanism according to claim 8, characterized in that: The top end of the push rod (72) is fixedly connected to two second moving plates (74), and one end of the second moving plate (74) is fixedly connected to a control block (75). The control block (75) is slidably connected to the housing (1).

Images