Linkage device of electric anastomat

Abstract

The electric anastomat linkage device comprises a gun barrel and an anastomat body which are detachably connected, a limiting block is arranged on the outer pipe wall of the rear end of the gun barrel, a stroke guide groove allowing the limiting block to be inserted and rotating in the circumferential direction is formed in the inner wall of a pipe opening in the front end of the anastomat body, a circuit board is further arranged in the anastomat body, and a trigger switch is arranged on the circuit board. The linkage mechanism A is used for limiting the trigger switch; and the linkage mechanism B is used for opening and closing the circuit board. The invention aims to provide the electric anastomat linkage device capable of preventing misoperation. The electric detachable anastomat has the advantages that triggering can be started only after the gun barrel is installed in place through double-mechanism association, safety and reliability are achieved, and the problem of manual misoperation of the electric detachable anastomat is solved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, in particular to an electric stapler linkage device. Background Art

[0002] The stapler is a medical device that replaces traditional manual suturing. Due to the development of modern science and technology and the improvement of manufacturing technology, the staplers used in clinical practice are of reliable quality, easy to use, tight, and of appropriate tightness. In particular, they have the advantages of fast suturing, simple operation, and few side effects and surgical complications, which also make it possible to remove tumors that were previously unresectable. Laparoscopic staplers (laparoscopic cutting staplers and disposable stapler boxes) are one of the important instruments in laparoscopic surgery. They replace traditional manual suturing and use titanium staples to separate or anastomose tissues. They are easy and quick to operate, greatly shortening the operation time. Laparoscopic staplers make it easy to anastomose in narrow surgical fields and deep parts that are difficult to operate manually, and they are accurate, firm and reliable, significantly reducing the incidence of anastomotic fistulas. The existing detachable electric laparoscopic stapler includes a cutting assembly and a body. The existing installation method is usually to insert one end of the gun rod on the cutting assembly into the cavity on the body, and then twist it so that the convex part of the gun rod is locked into the groove on the cavity to achieve locking.

[0003] The following problems exist during use:

[0004] 1. When installing the gun rod on the cutting assembly of the existing detachable electric laparoscopic stapler, it is difficult for the operator to determine whether it is installed in place;

[0005] 2. Firing the gun directly without properly installing it will damage the device and may cause harm to the patient. Summary of the invention

[0006] The object of the present invention is to provide an electric stapler linkage device which can prevent misoperation.

[0007] The object of the present invention is achieved through the following technical solutions: an electric stapler linkage device, comprising a detachably connected gun rod and a stapler body, wherein the outer tube wall at the rear end of the gun rod is provided with a limit block, and the inner wall of the tube opening at the front end of the stapler body is provided with a travel guide groove for allowing the limit block to be inserted and rotated circumferentially, and the stapler body is also provided with a circuit board, and a trigger switch is provided on the circuit board, and further comprising a linkage mechanism A for the limit trigger switch and a linkage mechanism B for opening and closing the circuit board;

[0008] The linkage mechanism A comprises a linkage rod A, a push-twist and a limit plate. The linkage rod A is slidably connected to the front tube wall of the stapler body. The front end of the linkage rod A faces the axial straight section of the travel guide groove and is driven to slide forward and backward by the limit block of the outer tube wall of the gun barrel. The push-twist is slidably connected to the outer wall of the stapler body and is fixed to the rear end of the linkage rod A. The limit plate is fixedly connected to the rear side of the push-twist and abuts against the trigger switch when it moves backward. The linkage mechanism A also comprises a reset component A that drives the limit plate to move forward when the gun barrel rotates circumferentially into place.

[0009] The linkage mechanism B includes a linkage rod B and a trigger plate. The linkage rod B is slidably connected to the front tube wall of the stapler body. The front end of the linkage rod B faces the rear end of the gun rod and is driven to slide back and forth by the rear end of the gun rod. The trigger plate is connected to the rear of the linkage rod B. A metal contact is provided on the trigger plate. When the gun rod is axially inserted into place, the trigger plate moves backward, and the metal contact on it contacts the metal part on the circuit board that is in a disconnected state to form a path.

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

[0011] The present invention is provided with a linkage mechanism A for a limit trigger switch and a linkage mechanism B for opening and closing the circuit board. The linkage mechanism A can ensure that the gun barrel is circumferentially screwed into place, otherwise the limit plate cannot be withdrawn, thereby canceling the physical limit of the trigger switch. The linkage mechanism B can ensure that the gun barrel is axially plugged into place, otherwise the metal contact piece on the trigger plate cannot contact the metal part on the circuit board to form a passage, that is, the dual mechanism connection ensures that the firing can only be started after the gun barrel is installed in place, which is safe and reliable, and solves the problem of human error in operation of the electric detachable stapler. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0014] Figure 3 It is a structural diagram of the travel guide groove.

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

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

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

[0018] Explanation of reference numerals: 1 gun barrel, 1-1 limit block, 2 anastomosis device body, 2-1 travel guide groove, 3 circuit board, 4 trigger switch, 5 linkage rod A, 6 push-twist, 7 limit plate, 8 return spring A, 9 linkage rod B, 10 trigger plate, 11 metal contact piece, 12 return spring B, 13 connecting tube. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0020] like Figure 1-6 Shown is a schematic diagram of an embodiment of an electric stapler linkage device provided by the present invention.

[0021] An electric stapler linkage device comprises a detachably connected gun rod 1 and a stapler body 2, wherein a limit block 1-1 is provided on the outer tube wall at the rear end of the gun rod 1, and a travel guide groove 2-1 (including an axially extending straight line segment and a circumferentially extending arc segment) is provided on the inner wall of the tube opening at the front end of the stapler body 2 for allowing the limit block 1-1 to be inserted and rotated circumferentially, a circuit board 3 is further provided in the stapler body 2, and a trigger switch 4 is provided on the circuit board 3, and the electric stapler linkage device further comprises a linkage mechanism A for limiting the trigger switch 4 and a linkage mechanism B for opening and closing the circuit board 3;

[0022] The linkage mechanism A comprises a linkage rod A5, a push-twist 6 and a limit plate 7, wherein the linkage rod A5 is slidably connected to the front tube wall of the stapler body 2, the front end of the linkage rod A5 is directly opposite to the axial straight section of the travel guide groove 2-1, and is driven to slide forward and backward by the limit block 1-1 on the outer tube wall of the gun barrel 1, the push-twist 6 is slidably connected to the outer wall of the stapler body 2 and is fixed to the rear end of the linkage rod A5, and the limit plate 7 is fixedly connected to the rear side of the push-twist 6, and when it moves backward, it abuts against the trigger switch 4; the linkage mechanism A also comprises a reset component A that drives the limit plate 7 to move forward when the gun barrel 1 rotates circumferentially into place;

[0023] The linkage mechanism B includes a linkage rod B9 and a trigger plate 10. The linkage rod B9 is slidably connected to the front tube wall of the anastomosis device body 2. The front end of the linkage rod B9 is opposite to the rear end of the gun rod 1, and is driven to slide back and forth by the rear end of the gun rod 1. The trigger plate 10 is connected to the rear of the linkage rod B9. A metal contact 11 is provided on the trigger plate 10. When the gun rod 1 is axially inserted into place, the trigger plate 10 moves backward, and the metal contact 11 thereon contacts the metal part on the circuit board 3 that is in a disconnected state to form a passage.

[0024] The metal contact sheet 11 is provided with two electrically connected metal contacts A, and the circuit board 3 is provided with two metal contacts B corresponding to the metal contacts one by one, and a short circuit is formed between the two metal contacts B.

[0025] The trigger switch 4 can be triggered only when two conditions are met: 1. The metal contact piece 11 contacts the metal part on the circuit board 3 that is in a disconnected state to form a path; 2. The reset component A drives the limit plate 7 to move forward to cancel the physical limit on the trigger switch 4.

[0026] The reset assembly A includes a reset spring A8. The linkage rod A5 is provided with a long groove extending forward and backward. The anastomosis device body 2 is provided with a protrusion located in the long groove. The reset spring A8 is arranged between the protrusion and the inner wall of the long groove.

[0027] 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 rod 1 is pulled out.

[0028] The reset assembly B includes a reset spring B12;

[0029] The rear end of the reset spring B12 is fixed to the side wall of the limit plate 7, and a connecting tube 13 slidably connected to the limit plate 7 is provided between the linkage rod B9 and the trigger plate 10, and the rear end of the connecting tube 13 abuts against the front end of the reset spring B12.

[0030] The reset assembly B includes a reset spring C, which is arranged between the rear end of the linkage rod B9 and the anastomosis device body 2.

[0031] The working principle of the present invention is as follows:

[0032] 1. The operator pushes the push knob 6 backward, and the limit plate 7 moves backward to abut against the trigger switch 4, and at the same time, the linkage rod A5 moves backward to exit the axial straight section of the travel guide groove 2-1;

[0033] 2. Align the limit block 1-1 of the outer tube wall at the rear end of the gun rod 1 with the travel guide groove 2-1 and insert it to the bottom. At the same time, the rear end of the gun rod 1 pushes the linkage rod B9 backward, driving 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 ;

[0034] 3. Then, rotate the gun rod 1 to make the limit block 1-1 enter the arc segment of the travel guide groove 2-1, release the push knob 6, and the reset component A drives the limit plate 7 to move forward to cancel the physical limit of the trigger switch 4; the linkage rod B9 remains stationary to maintain the passage state of the circuit board 3, see Figure 6 ;

[0035] 4. Operate the trigger switch 4 to complete the anastomosis operation;

[0036] 5. After the operation is completed, the operator pushes the push knob 6 backward, rotates the gun rod 1 in the opposite direction, and then withdraws the gun rod 1 from the stapler body 2. The reset component A drives the limit plate 7 to move forward to cancel 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 the outer tube wall at the rear end of the gun rod (1) is provided with a limit block (1-1), and the inner wall at the front end of the tube opening of the stapler body (2) is provided with a travel guide groove (2-1) for allowing the limit block (1-1) to be inserted and rotated in a circumferential direction, and a circuit board (3) is further provided in the stapler body (2), and a trigger switch (4) is provided on the circuit board (3), characterized in that: It also includes a linkage mechanism A for a limit trigger switch (4) and a linkage mechanism B for opening and closing the circuit board (3); The linkage mechanism A comprises a linkage rod A (5), a push-twist (6) and a limit plate (7); the linkage rod A (5) is slidably connected to the front tube wall of the anastomosis device body (2); the front end of the linkage rod A (5) is directly opposite to the axial straight section of the travel guide groove (2-1), and is driven to slide forward and backward by a limit block (1-1) on the outer tube wall of the gun rod (1); the push-twist (6) is slidably connected to the outer wall of the anastomosis device body (2) and is fixed to the rear end of the linkage rod A (5); the limit plate (7) is fixedly connected to the rear side of the push-twist (6) and abuts against the trigger switch (4) when it moves backward; the linkage mechanism A also comprises a reset component A that drives the limit plate (7) to move forward when the gun rod (1) rotates circumferentially to a certain position; The linkage mechanism B comprises a linkage rod B (9) and a trigger plate (10). The linkage rod B (9) is slidably connected to the front tube wall of the anastomosis device body (2). The front end of the linkage rod B (9) faces the rear end of the gun rod (1) and is driven to slide forward and backward by the rear end of the gun rod (1). The trigger plate (10) is connected to the rear of the linkage rod B (9). A metal contact piece (11) is provided on the trigger plate (10). When the gun rod (1) is axially inserted into place, the trigger plate (10) moves backward, and the metal contact piece (11) on the trigger plate (10) contacts the metal part on the circuit board (3) that is in a disconnected state to form a path.

2. The electric stapler linkage device according to claim 1, characterized in that: The reset assembly A comprises a reset spring A (8), the linkage rod A (5) is provided with a long groove extending forward and backward, the anastomosis device body (2) is provided with a protrusion located in the long groove, and the reset spring A (8) is arranged 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 which drives the trigger plate (10) to separate from the circuit board (3) when the gun rod (1) is pulled out.

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

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

6. The electric stapler linkage device according to claim 1, characterized in that: The metal contact sheet (11) is provided with two electrically connected metal contacts A, and the circuit board (3) is provided with two metal contacts B corresponding one to one to the metal contacts, with a short circuit being formed between the two metal contacts B.

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