Electric stapler linkage apparatus

Abstract

The present invention relates to an electric stapler linkage apparatus, which comprises a gun rod and a stapler body that are detachably connected. A limiting block is arranged on an outer tube wall of a rear end of the gun rod. A stroke guide groove allowing for the insertion of the limiting block and permitting its circumferential rotation is arranged on an inner wall of a tube opening at a front end of the stapler body. A circuit board is further arranged in the stapler body, and a trigger switch is arranged on the circuit board. The electric stapler linkage apparatus further comprises a linkage mechanism A for limiting the trigger switch and a linkage mechanism B for opening and closing the circuit board. The objective of the present invention is to provide an electric stapler linkage apparatus capable of preventing misoperations. The advantages of the present invention lie in that: the present invention, via the interlocking of the two mechanisms, ensures that the firing can be started only after the gun rod is mounted in place, thus being safe and reliable, and solving the problem of manual misoperations of electric detachable staplers.

Description

Electric stapler linkage device Technical Field

[0001] This invention relates to the field of medical devices, specifically to an electric stapler linkage device. Background Technology

[0002] Anastomosing devices are medical alternatives to traditional manual suturing. Due to advancements in modern technology and improved manufacturing techniques, clinically used anastomosing devices are reliable, easy to use, and provide precise and appropriate tightness. Their advantages include rapid suturing, simple operation, and minimal side effects and surgical complications. They have also enabled the removal of previously inoperable tumors. Laparoscopic anastomosing devices (laparoscopic cutting anastomosing devices and disposable staple cartridges) are crucial instruments in laparoscopic surgery. They replace traditional manual suturing, using titanium staples to sever or anastomose tissue. The operation is simple and rapid, significantly shortening surgical time. Laparoscopic anastomosing devices make anastomosis easier, more accurate, and more secure in situations with narrow surgical fields and deep tissues, significantly reducing the incidence of anastomotic leakage. Existing detachable electric laparoscopic anastomosing devices consist of a cutting assembly and a device body. Current installation methods typically involve inserting one end of the cutting assembly's prong into the lumen on the device body and then screwing it in, causing the prong to engage with a groove on the lumen for locking.

[0003] The following problems exist during use:

[0004] 1. In existing detachable electric laparoscopic staplers, it is difficult for operators to determine whether the gun bar on the cutting assembly is properly installed during installation;

[0005] 2. Firing the gun if it is not properly installed will damage the gun and may cause harm to the patient. Summary of the Invention

[0006] The purpose of this invention is to provide an electric stapler linkage device that can prevent misoperation.

[0007] The objective of this invention is achieved through the following technical solution: an electric stapler linkage device, comprising a detachably connected gun rod and a stapler body, wherein a limiting block is provided on the outer tube wall at the rear end of the gun rod, and a stroke guide groove is provided on the inner wall of the tube opening at the front end of the stapler body to allow the limiting block to be inserted and rotated circumferentially, and a circuit board is also provided inside the stapler body, wherein a trigger switch is provided on the circuit board, and a linkage mechanism A for limiting the trigger switch and a linkage mechanism B for opening and closing the circuit board are also included;

[0008] The linkage mechanism A includes a linkage rod A, a pusher, and a limiting plate. The linkage rod A is slidably connected to the front wall of the anastomosis device body. The front end of the linkage rod A is directly opposite the axial straight section of the stroke guide groove and is driven to slide back and forth by the limiting block on the outer wall of the gun rod. The pusher is slidably connected to the outer wall of the anastomosis device body and fixed to the rear end of the linkage rod A. The limiting plate is fixedly connected to the rear side of the pusher and abuts against the trigger switch when it moves backward. The linkage mechanism A also includes a reset component A that drives the limiting plate to move forward when the gun rod rotates to the correct position in the circumferential direction.

[0009] The linkage mechanism B includes a linkage rod B and a trigger plate. The linkage rod B is slidably connected to the front wall of the anastomosis device. The front end of the linkage rod B faces the rear end of the gun rod and is driven to slide back and forth through the rear end of the gun rod. The trigger plate is connected to the rear of the linkage rod B and is provided with a metal contact piece. When the gun rod is axially inserted into place, the trigger plate moves backward and the metal contact piece on it contacts the metal part on the circuit board that is in the open circuit to form a passage.

[0010] Compared with the prior art, the advantages of the present invention are as follows:

[0011] This invention includes a linkage mechanism A for a limit trigger switch and a linkage mechanism B for opening and closing the circuit board. Linkage mechanism A ensures that the gun rod is circumferentially screwed into place; otherwise, the limit plate cannot be disengaged, thus eliminating the physical limit on the trigger switch. Linkage mechanism B ensures that the gun rod is axially inserted into place; otherwise, the metal contact on the trigger plate cannot contact the metal parts on the circuit board to form a path. In other words, the dual mechanisms ensure that the gun rod can only be activated after it is installed in place, making it safe and reliable and solving the problem of human error in the electric detachable stapler. Attached Figure Description

[0012] Figure 1 is a schematic diagram of an embodiment of an electric stapler linkage device according to the present invention.

[0013] Figure 2 is a schematic diagram of the linkage mechanism A and linkage mechanism B.

[0014] Figure 3 is a schematic diagram of the stroke guide groove.

[0015] Figure 4 is a schematic diagram of the working principle of the electric stapler linkage device (state 1).

[0016] Figure 5 is a schematic diagram of the working principle of the electric stapler linkage device (state 2).

[0017] Figure 6 is a schematic diagram of the working principle of the electric stapler linkage device (state 3).

[0018] Figure 7 is a schematic diagram of another embodiment of the electric stapler linkage device.

[0019] Labeling Explanation: 1 Gun Rod, 1-1 Limit Block, 2 Anastomosing Device Body, 2-1 Stroke Guide Groove, 3 Circuit Board, 4 Trigger Switch, 4-1 Light Grating Switch, 5 Linkage Rod A, 6 Push Torque, 7 Limit Plate, 8 Return Spring A, 9 Linkage Rod B, 10 Trigger Plate, 11 Metal Contact Plate, 12 Return Spring B, 13 Connecting Cylinder. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0021] Figures 1-6 show schematic diagrams of an embodiment of an electric stapler linkage device provided by the present invention.

[0022] An electric stapler linkage device includes a detachably connected gun rod 1 and a stapler body 2. The outer tube wall at the rear end of the gun rod 1 is provided with a limiting block 1-1. The inner wall of the front end of the stapler body 2 is provided with a stroke guide groove 2-1 (including an axially extending straight section and a circumferentially extending arc section) for inserting the limiting block 1-1 and rotating circumferentially. The stapler body 2 is also provided with a circuit board 3. The circuit board 3 is provided with a trigger switch 4. The electric stapler linkage device also includes a linkage mechanism A for limiting the trigger switch 4 and a linkage mechanism B for opening and closing the circuit board 3.

[0023] The linkage mechanism A includes a linkage rod A5, a pusher 6, and a limiting plate 7. The linkage rod A5 is slidably connected to the front wall of the anastomosis device body 2. The front end of the linkage rod A5 is directly opposite the axial straight section of the stroke guide groove 2-1 and is driven to slide back and forth by the limiting block 1-1 on the outer wall of the gun rod 1. The pusher 6 is slidably connected to the outer wall of the anastomosis device body 2 and fixed to the rear end of the linkage rod A5. The limiting plate 7 is fixedly connected to the rear side of the pusher 6 and abuts against the trigger switch 4 when it moves backward. The linkage mechanism A also includes a reset component A that drives the limiting plate 7 to move forward when the gun rod 1 rotates to the circumferential position.

[0024] The linkage mechanism B includes a linkage rod B9 and a trigger plate 10. The linkage rod B9 is slidably connected to the front wall of the anastomosis device body 2. The front end of the linkage rod B9 is directly opposite the rear end of the gun rod 1 and is driven to slide back and forth through the rear end of the gun rod 1. The trigger plate 10 is connected to the rear of the linkage rod B9. The trigger plate 10 is provided with a metal contact piece 11. When the gun rod 1 is axially inserted into place, the trigger plate 10 moves backward, and the metal contact piece 11 on it contacts the metal part on the circuit board 3 that is in the open circuit to form a passage.

[0025] The metal contact piece 11 has two electrically connected metal contacts A, and the circuit board 3 has two metal contacts B that correspond one-to-one with the metal contacts, forming an open circuit between the two metal contacts B.

[0026] The trigger switch 4 can only be triggered when two conditions are met: 1. The metal contact 11 contacts the metal part on the circuit board 3 that is in the open circuit to form a circuit; 2. The reset component A drives the limit plate 7 to move forward, canceling the physical limit on the trigger switch 4.

[0027] As shown in Figure 7: In another embodiment, the trigger switch 4 here can be replaced with other switches with similar functions; for example, the grating switch 4-1.

[0028] Specifically, it includes a detachable gun barrel 1 and a stapler body 2. The outer tube wall at the rear end of the gun barrel 1 is provided with a limiting block 1-1. The inner wall of the front end of the stapler body 2 is provided with a travel guide groove 2-1 for inserting the limiting block 1-1 and rotating circumferentially. The stapler body 2 is also provided with a circuit board 3. The circuit board 3 is characterized by having a grating switch 4-1 on it, and also includes a linkage mechanism A for triggering the limiting switch 4 and a linkage mechanism B for opening and closing the circuit board 3.

[0029] The linkage mechanism A includes a linkage rod A5, a pusher 6, and a limiting plate 7. The linkage rod A5 is slidably connected to the front wall of the anastomosis device body 2. The front end of the linkage rod A5 is directly opposite the axial straight section of the stroke guide groove 2-1 and is driven to slide back and forth by the limiting block 1-1 on the outer wall of the gun rod 1. The pusher 6 is slidably connected to the outer wall of the anastomosis device body 2 and fixed to the rear end of the linkage rod A5. The limiting plate 7 is fixedly connected to the rear side of the pusher 6 and triggers the light grid switch 4-1 when it moves backward. The linkage mechanism A also includes a reset component A that drives the limiting plate 7 to move forward when the gun rod 1 rotates to the correct position in the circumferential direction.

[0030] The linkage mechanism B includes a linkage rod B9 and a trigger plate 10. The linkage rod B9 is slidably connected to the front wall of the anastomosis device body 2. The front end of the linkage rod B9 is directly opposite the rear end of the gun rod 1 and is driven to slide back and forth through the rear end of the gun rod 1. The trigger plate 10 is connected to the rear of the linkage rod B9. The trigger plate 10 is provided with a metal contact piece 11. When the gun rod 1 is axially inserted into place, the trigger plate 10 moves backward, and the metal contact piece 11 on it contacts the metal part on the circuit board 3 that is in the open circuit to form a passage.

[0031] The trigger switch 4 here is replaced with a grating switch 4-1. Because the limit plate 7 abuts against the trigger switch 4 when it moves backward, there is a contact process, which causes a certain amount of sticking during use. If there is no contact between the limit plate 7 and the grating switch, the operation will be smoother.

[0032] The reset assembly A includes a reset spring A8. The linkage rod A5 has a long groove extending forward and backward. The anastomosis device body 2 has a protrusion located in the long groove. The reset spring A8 is disposed between the protrusion and the inner wall of the long groove.

[0033] The linkage mechanism B also includes a reset component B that drives the trigger plate 10 to separate from the circuit board 3 when the gun barrel 1 is pulled out.

[0034] The reset component B includes a reset spring B12;

[0035] The rear end of the reset spring B12 is fixed to the side wall of the limiting plate 7. A connecting cylinder 13 is provided between the linkage rod B9 and the trigger plate 10 and is slidably connected to the limiting plate 7. The rear end of the connecting cylinder 13 abuts against the front end of the reset spring B12.

[0036] As shown in Figure 7: In another embodiment, the reset component B includes a reset spring B12;

[0037] The reset spring B12 is sleeved on the outer periphery of the limiting plate 7, and the rear end of the reset spring B12 is fixed to the side wall of the limiting plate 7. A connecting cylinder 13 is provided between the linkage rod B9 and the trigger plate 10 and is slidably connected to the limiting plate 7. The rear end of the connecting cylinder 13 abuts against the front end of the reset spring B12.

[0038] As shown in Figure 2, the reset spring B12 is set on one side of the limiting plate 7, which results in uneven force distribution during use. Therefore, it is also possible to consider sleeve the reset spring B12 on the outer periphery of the limiting plate 7. The front and rear connection relationship of the reset spring B12 remains unchanged, that is, the rear end of the reset spring B12 is fixed to the side wall of the limiting plate 7, and the rear end of the connecting cylinder 13 abuts against the front end of the reset spring B12.

[0039] The reset assembly B includes a reset spring C, which is disposed between the rear end of the linkage rod B9 and the anastomosis device body 2.

[0040] The working principle of this invention is as follows:

[0041] 1. The operator pushes the push knob 6 backward, the limit plate 7 moves backward to block the trigger switch 4, and at the same time the linkage rod A5 moves backward to exit the axial straight section of the stroke guide groove 2-1;

[0042] 2. Align the limiting block 1-1 on the outer tube wall of the rear end of the gun barrel 1 with the stroke guide groove 2-1 and insert it to the bottom. At the same time, push the linkage rod B9 backward at the rear end of the gun barrel 1, causing the trigger plate 10 to move backward, and the metal contact piece 11 on it contacts the metal part on the circuit board 3 that is in the open circuit to form a passage, see Figure 5.

[0043] 3. Next, rotate the gun rod 1 so that the limiting block 1-1 enters the circumferential arc segment of the travel guide groove 2-1. Release the push knob 6, and the reset component A drives the limiting plate 7 to move forward, canceling the physical limit on the trigger switch 4. The linkage rod B9 remains stationary, maintaining the passage state of the circuit board 3, see Figure 6.

[0044] 4. Operate trigger switch 4 to complete the matching operation;

[0045] 5. After the operation is completed, the operator pushes the push knob 6 backward and rotates the gun rod 1 in the opposite direction. Then, the gun rod 1 is removed from the stapler body 2. The reset component A drives the limit plate 7 to move forward, canceling the physical limit on the trigger switch 4. The reset component B drives the trigger plate 10 to separate from the circuit board 3.

Claims

1. An electric stapler linkage device, comprising a detachably connected gun rod (1) and a stapler body (2), wherein a limiting block (1-1) is provided on the outer wall of the rear end of the gun rod (1), and a travel guide groove (2-1) is provided on the inner wall of the front end of the stapler body (2) to accommodate the insertion and circumferential rotation of the limiting block (1-1), and a circuit board (3) is also provided inside the stapler body (2), wherein a trigger switch (4) is provided on the circuit board (3), characterized in that: It also includes a linkage mechanism A for the limit trigger switch (4) and a linkage mechanism B for opening and closing the circuit board (3); The linkage mechanism A includes a linkage rod A (5), a pusher (6), and a limiting plate (7). The linkage rod A (5) is slidably connected to the front wall of the anastomosis device body (2). The front end of the linkage rod A (5) is directly opposite the axial straight section of the stroke guide groove (2-1) and is driven to slide back and forth by the limiting block (1-1) on the outer wall of the gun rod (1). The pusher (6) is slidably connected to the outer wall of the anastomosis device body (2) and fixed to the rear end of the linkage rod A (5). The limiting plate (7) is fixedly connected to the rear side of the pusher (6) and abuts the trigger switch (4) when it moves backward. The linkage mechanism A also includes a reset component A that drives the limiting plate (7) to move forward when the gun rod (1) rotates to the circumferential position. The linkage mechanism B includes a linkage rod B (9) and a trigger plate (10). The linkage rod B (9) is slidably connected to the front wall of the anastomosis device body (2). The front end of the linkage rod B (9) is directly opposite the rear end of the gun rod (1) and is driven to slide back and forth through the rear end of the gun rod (1). The trigger plate (10) is connected to the rear of the linkage rod B (9). The trigger plate (10) is provided with a metal contact piece (11). When the gun rod (1) is axially inserted into the position, the trigger plate (10) moves backward, and the metal contact piece (11) on it contacts the metal part on the circuit board (3) that is in the open circuit to form a passage.

2. The electric stapler linkage device according to claim 1, characterized in that: The reset assembly A includes a reset spring A (8), the linkage rod A (5) has a long groove extending forward and backward, the anastomosis device body (2) has a protrusion located in the long groove, and the reset spring A (8) is located between the protrusion and the inner wall of the long groove.

3. The electric stapler linkage device according to claim 1, characterized in that: The linkage mechanism B also includes a reset component B that drives the trigger plate (10) to separate from the circuit board (3) after the gun barrel (1) is pulled out.

4. The electric stapler linkage device according to claim 3, characterized in that: The reset assembly B includes a reset spring B (12); The rear end of the reset spring B (12) is fixed to the side wall of the limiting plate (7). A connecting cylinder (13) that is slidably connected to the limiting plate (7) is provided between the linkage rod B (9) and the trigger plate (10). The rear end of the connecting cylinder (13) abuts against the front end of the reset spring B (12).

5. The electric stapler linkage device according to claim 3, characterized in that: The reset assembly B includes a reset spring B (12); The reset spring B (12) is sleeved on the outer periphery of the limiting plate (7), and the rear end of the reset spring B (12) is fixed to the side wall of the limiting plate (7). A connecting cylinder (13) that is slidably connected to the limiting plate (7) is provided between the linkage rod B (9) and the trigger plate (10), and the rear end of the connecting cylinder (13) abuts against the front end of the reset spring B (12).

6. The electric stapler linkage device according to claim 3, characterized in that: The reset assembly B includes a reset spring C, which is disposed between the rear end of the linkage rod B (9) and the anastomosis device body (2).

7. The electric stapler linkage device according to claim 1, characterized in that: The metal contact piece (11) is provided with two electrically connected metal contacts A, and the circuit board (3) is provided with two metal contacts B that correspond one-to-one with the metal contacts, forming an open circuit between the two metal contacts B.

8. An electric stapler linkage device, comprising a detachably connected gun rod (1) and a stapler body (2), wherein a limiting block (1-1) is provided on the outer wall of the rear end of the gun rod (1), and a travel guide groove (2-1) is provided on the inner wall of the front end of the stapler body (2) to accommodate the insertion and circumferential rotation of the limiting block (1-1), and a circuit board (3) is also provided inside the stapler body (2), characterized in that: The circuit board (3) is equipped with a grating switch (4-1), and also includes a linkage mechanism A for the limit trigger switch (4) and a linkage mechanism B for opening and closing the circuit board (3); The linkage mechanism A includes a linkage rod A (5), a pusher (6), and a limiting plate (7). The linkage rod A (5) is slidably connected to the front wall of the anastomosis device body (2). The front end of the linkage rod A (5) is directly opposite the axial straight section of the stroke guide groove (2-1) and is driven to slide back and forth by the limiting block (1-1) on the outer wall of the gun rod (1). The pusher (6) is slidably connected to the outer wall of the anastomosis device body (2) and fixed to the rear end of the linkage rod A (5). The limiting plate (7) is fixedly connected to the rear side of the pusher (6) and triggers the grating switch (4-1) when it moves backward. The linkage mechanism A also includes a reset component A that drives the limiting plate (7) to move forward when the gun rod (1) rotates to the circumferential position. The linkage mechanism B includes a linkage rod B (9) and a trigger plate (10). The linkage rod B (9) is slidably connected to the front wall of the anastomosis device body (2). The front end of the linkage rod B (9) is directly opposite the rear end of the gun rod (1) and is driven to slide back and forth through the rear end of the gun rod (1). The trigger plate (10) is connected to the rear of the linkage rod B (9). The trigger plate (10) is provided with a metal contact piece (11). When the gun rod (1) is axially inserted into the position, the trigger plate (10) moves backward, and the metal contact piece (11) on it contacts the metal part on the circuit board (3) that is in the open circuit to form a passage.

9. The electric stapler linkage device according to claim 8, characterized in that: The reset assembly A includes a reset spring A (8), the linkage rod A (5) has a long groove extending forward and backward, the anastomosis device body (2) has a protrusion located in the long groove, and the reset spring A (8) is located between the protrusion and the inner wall of the long groove.

10. The electric stapler linkage device according to claim 8, characterized in that: The linkage mechanism B also includes a reset component B that drives the trigger plate (10) to separate from the circuit board (3) after the gun barrel (1) is pulled out; The reset assembly B includes a reset spring B (12); the rear end of the reset spring B (12) is fixed to the side wall of the limiting plate (7), and a connecting cylinder (13) that is slidably connected to the limiting plate (7) is provided between the linkage rod B (9) and the trigger plate (10), and the rear end of the connecting cylinder (13) abuts against the front end of the reset spring B (12); or The reset assembly B includes a reset spring B (12); The reset spring B (12) is sleeved on the outer periphery of the limiting plate (7), and the rear end of the reset spring B (12) is fixed to the side wall of the limiting plate (7). A connecting cylinder (13) that is slidably connected to the limiting plate (7) is provided between the linkage rod B (9) and the trigger plate (10), and the rear end of the connecting cylinder (13) abuts against the front end of the reset spring B (12).

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