Angle swing adjusting device for endoscope anastomat and endoscope anastomat

Abstract

The application discloses an angle swing adjusting device for a laparoscope anastomat, which comprises a shell, a seat, an adjusting gear, a pull rod sliding block, a positioning tooth, a tooth sliding block, the seat is installed on the shell, the adjusting gear is suitable for being driven to rotate, the pull rod sliding block is slidably arranged on the seat, the pull rod sliding block is provided with a containing groove, the end of the containing groove in the sliding direction of the pull rod sliding block is provided with an abutting portion, the positioning tooth is movably arranged on the shell, a self-locking mechanism is arranged between the positioning tooth and the pull rod sliding block, the self-locking mechanism is configured to lock the sliding of the pull rod sliding block when being engaged and not to lock the sliding of the pull rod sliding block when being disengaged, the tooth sliding block is slidably arranged in the containing groove along the sliding direction of the pull rod sliding block, the corresponding end of the tooth sliding block has a sliding gap with the abutting portion, one side of the tooth sliding block is in meshing connection with the adjusting gear, and a non-self-locking tooth meshing mechanism is arranged between the other side of the tooth sliding block and the positioning tooth. The angle of the front end head of the anastomat can be well adjusted, the operation is convenient, and the locking effect is good.

Description

Technical Field

[0001] This invention relates to an angle swing adjustment device for a laparoscopic anastomosis device and a laparoscopic anastomosis device, belonging to the field of medical device technology. Background Technology

[0002] Currently, laparoscopic staplers are used in minimally invasive surgery. The staple cartridge assembly or anastomosis assembly at the front end of the laparoscopic stapler needs to swing. For example, Chinese patent CN217827966U discloses a staple cartridge assembly swinging mechanism and its laparoscopic stapler. In this patent, the staple cartridge assembly at the front end drives the rack to move through the steering rod of the control mechanism. The rack drives the gear set to rotate, thereby causing the staple cartridge assembly to swing. Although this patent uses the steering rod to pull, it does not describe how to pull the steering rod. Chinese patent CN116172635A discloses a swinging mechanism and surgical stapler. In this patent, the swinging rod can drive the staple cartridge assembly or anastomosis assembly at the front end to swing. In this patent, when it is necessary to control the swinging of the end effector, the first mating part is operated to drive the locking part from the first position to the second position so as not to block the rotation of the driving part, thereby avoiding damage to the locking part when the driving part rotates. However, the operation is inconvenient and the locking effect is poor. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an angle swing adjustment device for a laparoscopic stapler, which can effectively adjust the angle of the front end of the stapler, is easy to operate, and has a good locking effect.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an angle swing adjustment device for a laparoscopic anastomosis device, comprising:

[0005] shell;

[0006] The seat is mounted on the housing;

[0007] Adjusting gear, the adjusting gear is adapted to be driven to rotate;

[0008] A pull rod slider is slidably fitted on the seat, and the pull rod slider is provided with a receiving groove, the end of which in the sliding direction of the pull rod slider is provided with an abutment portion;

[0009] A positioning tooth is movably mounted on the housing. A self-locking mechanism is provided between the positioning tooth and the pull rod slider. The self-locking mechanism is configured to lock the sliding of the pull rod slider when engaged and not lock the sliding of the pull rod slider when disengaged.

[0010] A toothed slider is slidably fitted within the receiving groove along the sliding direction of the pull rod slider, and a sliding clearance is provided between the corresponding end of the toothed slider and the abutment portion. One side of the toothed slider is meshed with the adjusting gear, and a non-self-locking tooth meshing mechanism is provided between the other side of the toothed slider and the positioning tooth; wherein...

[0011] Rotating the adjusting gear drives the toothed slider to move towards the abutment portion within the receiving groove. When the corresponding end of the toothed slider abuts against the abutment portion, the non-self-locking tooth meshing mechanism between the toothed slider and the positioning tooth disengages the self-locking mechanism between the positioning tooth and the pull rod slider. Continuing to rotate the adjusting gear in this direction, the abutment engagement between the corresponding end of the toothed slider and the abutment portion drives the pull rod slider to move.

[0012] Furthermore, the non-self-locking tooth engagement mechanism includes a non-self-locking mating tooth portion disposed on the other side of the tooth slider and a non-self-locking tooth portion disposed on the positioning tooth and meshing with the non-self-locking mating tooth portion.

[0013] Furthermore, the self-locking mechanism includes a self-locking engaging tooth portion disposed on the pull rod slider and a self-locking tooth portion disposed on the positioning tooth and meshing with the self-locking engaging tooth portion, wherein the tooth angle of the tooth in the self-locking mechanism is smaller than the tooth angle of the tooth in the non-self-locking tooth meshing mechanism.

[0014] Furthermore, the teeth of the self-locking teeth and the corresponding teeth of the non-self-locking teeth are located on the same straight line.

[0015] Furthermore, the teeth of the self-locking tooth portion are arc-shaped teeth, and the teeth of the non-self-locking tooth portion are triangular teeth.

[0016] Furthermore, the self-locking mechanism includes a self-locking meshing tooth disposed on the pull rod slider and a self-locking tooth disposed on the positioning tooth and meshing with the self-locking meshing tooth.

[0017] Furthermore, to facilitate clockwise or counterclockwise angle adjustment, the receiving groove is provided with abutment portions at both ends in the sliding direction of the pull rod slider;

[0018] There is a sliding gap between the corresponding end of the toothed slider and the corresponding abutment part.

[0019] Furthermore, the shell is provided with a shell groove, and the positioning tooth is accommodated in the shell groove. The positioning tooth has two opposing sides, one side of which is provided with a self-locking mechanism and a non-self-locking tooth engagement mechanism, and the other side is provided with an elastic element between itself and the wall forming the shell groove.

[0020] Furthermore, the seat is slidably mounted on the housing, and a locking mechanism for engaging or disengaging is provided between the seat and the adjusting gear. The seat has a locking position and an unlocking position relative to the housing. When the seat slides to the unlocking position, the locking mechanism disengages, and the adjusting gear is adapted to be rotated. When the seat slides to the locking position, the locking mechanism engages, and the adjusting gear is locked and cannot be rotated.

[0021] Furthermore, the locking mechanism includes a tongue disposed on one of the adjusting gear and the seat, and a slot disposed on the other of the adjusting gear and the seat and engaging with the tongue.

[0022] The present invention also provides a laparoscopic anastomosis device, including the above-mentioned laparoscopic anastomosis device for angle swing adjustment.

[0023] After adopting the above technical solution, under normal conditions, the adjusting gear meshes with the toothed slider. There is a sliding gap between the two ends of the toothed slider and the corresponding abutment portions at both ends of the receiving groove. Rotating the adjusting gear causes the toothed slider to move a distance equal to the sliding gap, thus moving it within the receiving groove towards the abutment portion. When the corresponding end of the toothed slider abuts the abutment portion, the non-self-locking tooth meshing mechanism between the toothed slider and the positioning tooth disengages the self-locking mechanism between the positioning tooth and the pull rod slider. Because the self-locking mechanism disengages, the pull rod slider is no longer locked. Continuing to rotate the adjusting gear in this direction, the corresponding end of the toothed slider abuts the abutment portion... The connecting rod and slider move in conjunction with the staple cartridge assembly or the swing rod of the anastomosis assembly. The movement of the connecting rod and slider pulls the swing rod, thereby adjusting the head angle of the anastomosis device. Once the desired angle is reached, the rotating adjusting gear stops. Under the action of the elastic element, the teeth on the self-locking part of the positioning tooth insert into the corresponding self-locking groove of the connecting rod and slider. The teeth on the non-self-locking part of the positioning tooth insert into the groove of the non-self-locking groove of the tooth slider. The connecting rod and slider are locked, thus fixing the swing angle. At the same time, the tooth slider is positioned, maintaining the sliding gap between its two ends and the corresponding abutment parts, preparing for the next angle adjustment. It is very convenient to use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the angle swing adjustment device for the laparoscopic anastomosis device of the present invention;

[0025] Figure 2 This is an assembly diagram of the adjusting gear, toothed slider, positioning teeth, and pull rod slider of the present invention;

[0026] Figure 3 This is a schematic diagram of the adjustment process of the angle swing adjustment device for the laparoscopic anastomosis device of the present invention;

[0027] Figure 4 This is a perspective view of the adjusting gear of the present invention;

[0028] Figure 5 This is a perspective view of the toothed slider of the present invention;

[0029] Figure 6 This is a perspective view of the positioning teeth of the present invention;

[0030] Figure 7 This is a perspective view of the pull rod slider of the present invention. Detailed Implementation

[0031] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0032] Example 1

[0033] like Figures 1-7 As shown, an angle swing adjustment device for a laparoscopic anastomosis device includes:

[0034] Shell 1;

[0035] Seat 2, seat 2 is mounted on shell 1;

[0036] Adjusting gear 3 is adapted to be driven to rotate;

[0037] A pull rod slider 4 is slidably mounted on a seat 2. The pull rod slider 4 is provided with a receiving groove 41, and the end of the receiving groove 41 in the sliding direction of the pull rod slider 4 is provided with an abutment part 44.

[0038] Positioning teeth 5 are movably mounted on the housing 1. A self-locking mechanism is provided between the positioning teeth 5 and the pull rod slider 4. The self-locking mechanism is configured to lock the sliding of the pull rod slider 4 when engaged and not lock the sliding of the pull rod slider 4 when disengaged.

[0039] The toothed slider 6 slides along the sliding direction of the pull rod slider 4 within the receiving groove 41, and the corresponding end of the toothed slider 6 has a sliding gap a with the abutment part 44. One side of the toothed slider 6 is meshed with the adjusting gear 3, and the other side of the toothed slider 6 is provided with a non-self-locking tooth meshing mechanism between itself and the positioning tooth 5; wherein,

[0040] When the rotating adjusting gear 3 drives the toothed slider 6 to move towards the abutment part 44 in the receiving groove 41, and the corresponding end of the toothed slider 6 abuts against the abutment part 44, the non-self-locking tooth meshing mechanism between the toothed slider 6 and the positioning tooth 5 disengages the self-locking mechanism between the positioning tooth 5 and the pull rod slider 4. The adjusting gear 3 continues to rotate in this direction, and the abutment cooperation between the corresponding end of the toothed slider 6 and the abutment part 44 drives the pull rod slider 4 to move.

[0041] In this embodiment, the stapler has a staple cartridge assembly or a stapler assembly, which includes a swing lever. Pulling the swing lever moves it back and forth, thereby adjusting the swing angle of the front end of the stapler. The staple cartridge assembly or the stapler assembly is prior art and will not be described in detail in this embodiment. Specifically, the lever slider 4 is connected to the swing lever, and the swing lever can be moved by moving the lever slider 4.

[0042] In this embodiment, as Figure 5 , 7 As shown, a sliding guide mechanism is provided between the toothed slider 6 and the pull rod slider 4. The sliding guide mechanism includes a guide block 62 disposed on one of the two and a guide groove 43 disposed on the other of the two and cooperating with the guide block 62.

[0043] In this embodiment, as Figure 5 , 6 As shown, the non-self-locking tooth engagement mechanism includes a non-self-locking meshing tooth 61 disposed on the other side of the tooth slider 6 and a non-self-locking tooth 51 disposed on the positioning tooth 5 and meshing with the non-self-locking meshing tooth 61.

[0044] In this embodiment, as Figure 6 , 7 As shown, the self-locking mechanism includes a self-locking meshing tooth 42 disposed on the pull rod slider 4 and a self-locking tooth 52 disposed on the positioning tooth 5 and meshing with the self-locking meshing tooth 42. The tooth angle of the teeth in the self-locking mechanism is smaller than the tooth angle of the teeth in the non-self-locking tooth meshing mechanism.

[0045] Specifically, both the non-self-locking tooth 61 and the self-locking tooth 42 are continuous teeth with grooves between adjacent teeth.

[0046] Specifically, such as Figure 6 As shown, the teeth of the self-locking tooth section 52 and the corresponding teeth of the non-self-locking tooth section 51 are located on the same straight line.

[0047] Specifically, the teeth of the self-locking tooth portion 52 and the self-locking mating tooth portion 42 can be arc-shaped teeth, while the teeth of the non-self-locking tooth portion 51 and the non-self-locking mating tooth portion 61 can be triangular teeth.

[0048] Specifically, such as Figure 7 As shown, the receiving groove 41 has abutment portions 44 at both ends in the sliding direction of the pull rod slider 4; there is a sliding gap a between the corresponding end of the toothed slider 6 and the corresponding abutment portion 44.

[0049] Specifically, such as Figure 1 , 2As shown in Figure 3, the shell 1 is provided with a shell groove 11, and the positioning tooth 5 is accommodated in the shell groove 11. The positioning tooth 5 has two opposite sides, one of which is provided with a part of the self-locking mechanism (i.e., the self-locking tooth part 52) ​​and a part of the non-self-locking tooth engagement mechanism (i.e., the non-self-locking tooth part 51), and the other side is provided with an elastic element 7 between it and the wall forming the shell groove 11.

[0050] In this embodiment, the elastic element is a spring.

[0051] Specifically, such as Figure 1 , 2 As shown in Figures 1 and 3, the seat 2 is slidably mounted on the housing 1. A locking mechanism for engaging or disengaging is provided between the seat 2 and the adjusting gear 3. The seat 2 has a locking position and an unlocking position relative to the housing 1. When the seat 2 slides to the unlocking position, the locking mechanism disengages, and the adjusting gear 3 is suitable for being rotated. When the seat 2 slides to the locking position, the locking mechanism engages, and the adjusting gear 3 is locked and cannot be rotated.

[0052] In this embodiment, the seat 2 can be slidably mounted on the shell 1 by at least a guide mechanism. The guide mechanism includes a slider and a groove, with the slider disposed on one of the two and the groove disposed on the other.

[0053] Specifically, such as Figure 1 , 2 As shown in Figures 1 and 3, the locking mechanism includes a tongue 21 disposed on the seat 2 and a slot 31 disposed on the adjusting gear 3 and engaged with the tongue 21.

[0054] Under normal conditions, the adjusting gear 3 meshes with the toothed slider 6. The two ends of the toothed slider 6 have a sliding gap 'a' between them and the corresponding abutment portions 44 at both ends of the receiving groove 41. The tongue 21 is inserted into the slot 31, and the adjusting gear 3 is in the locked position. After the staple cartridge assembly or mating assembly is installed at the front end, the seat 2 is pushed backward. At this time, the tongue 21 disengages from the slot 31, and the adjusting gear 3 is in the unlocked position. Rotating the adjusting gear 3 causes the toothed slider 6 to move a distance of sliding gap 'a' within the receiving groove 41. When the corresponding end of the toothed slider 6 abuts against the abutment portion 44, the non-self-locking meshing mechanism between the toothed slider 6 and the positioning tooth 5 disengages the self-locking mechanism between the positioning tooth 5 and the pull rod slider 4. Because the self-locking mechanism disengages, the pull rod slider 4 is no longer locked. Continue rotating the adjusting gear 3 in this direction. The corresponding end of the toothed slider 6 abuts against the abutment part 44, causing the pull rod slider 4 to move. The pull rod slider 4 is connected to the staple cartridge assembly or the swing lever of the anastomosis assembly. The movement of the pull rod slider 4 pulls the swing lever, thereby adjusting the head angle of the anastomosis front end. When the desired angle is reached, stop rotating the adjusting gear 3. Under the action of the elastic element 7, the teeth on the self-locking tooth part 52 of the positioning tooth 5 will insert into the tooth groove of the corresponding self-locking tooth part 42 of the pull rod slider 4. The teeth on the non-self-locking tooth part 51 of the positioning tooth 5 will insert into the tooth groove of the non-self-locking tooth part 61 of the toothed slider 6. The pull rod slider 4 will be locked, thereby fixing the swing angle. At the same time, the toothed slider 6 is positioned, maintaining the sliding gap a between its two ends and the corresponding abutment part 44, preparing for the next angle adjustment. It is very convenient to use.

[0055] Example 2

[0056] An endoscopic anastomosis device includes the endoscopic anastomosis angle swing adjustment device of Embodiment 1.

[0057] The above specific embodiments further illustrate the technical problems solved by the present invention, the technical solutions, and the beneficial effects. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An angle swing adjustment device for a laparoscopic anastomosis device, characterized in that, include: Shell (1); Seat (2), said seat (2) is mounted on the shell (1); Adjusting gear (3), the adjusting gear (3) is adapted to be driven to rotate; A pull rod slider (4) is slidably fitted on the seat (2). The pull rod slider (4) is provided with a receiving groove (41). The receiving groove (41) is provided with an abutment part (44) at the end of the pull rod slider (4) in the sliding direction. Positioning teeth (5) are movably disposed on the shell (1). A self-locking mechanism is provided between the positioning teeth (5) and the pull rod slider (4). The self-locking mechanism is configured to lock the sliding of the pull rod slider (4) when engaged and not lock the sliding of the pull rod slider (4) when disengaged. A toothed slider (6) is slidably fitted into the receiving groove (41) along the sliding direction of the pull rod slider (4), and the corresponding end of the toothed slider (6) has a sliding gap with the abutment part (44). One side of the toothed slider (6) is meshed with the adjusting gear (3), and the other side of the toothed slider (6) is provided with a non-self-locking tooth meshing mechanism between itself and the positioning tooth (5); wherein, Rotating the adjusting gear (3) drives the toothed slider (6) to move towards the abutment part (44) in the receiving groove (41) until the corresponding end of the toothed slider (6) abuts against the abutment part (44). Through the action of the non-self-locking tooth meshing mechanism between the toothed slider (6) and the positioning tooth (5), the self-locking mechanism between the positioning tooth (5) and the pull rod slider (4) is disengaged. Continue rotating the adjusting gear (3) in this direction. Through the abutment cooperation between the corresponding end of the toothed slider (6) and the abutment part (44), the pull rod slider (4) is moved. The non-self-locking tooth engagement mechanism includes a non-self-locking meshing tooth (61) disposed on the other side of the tooth slider (6) and a non-self-locking tooth (51) disposed on the positioning tooth (5) and meshing with the non-self-locking meshing tooth (61). The self-locking mechanism includes a self-locking meshing tooth (42) disposed on the pull rod slider (4) and a self-locking tooth (52) disposed on the positioning tooth (5) and meshing with the self-locking meshing tooth (42). The tooth angle of the tooth in the self-locking mechanism is smaller than the tooth angle of the tooth in the non-self-locking tooth meshing mechanism.

2. The angle swing adjustment device for the laparoscopic anastomosis device according to claim 1, characterized in that, The teeth of the self-locking tooth portion (52) and the corresponding teeth of the non-self-locking tooth portion (51) are located on the same straight line.

3. The angle swing adjustment device for laparoscopic anastomosis according to claim 1, characterized in that, The teeth of the self-locking toothed part (52) are arc-shaped teeth, and the teeth of the non-self-locking toothed part (51) are triangular teeth.

4. The angle swing adjustment device for the laparoscopic anastomosis device according to claim 1, characterized in that, The receiving groove (41) has abutment parts (44) at both ends of the sliding direction of the pull rod slider (4). There is a sliding gap between the corresponding end of the toothed slider (6) and the corresponding abutment (44).

5. The angle swing adjustment device for laparoscopic anastomosis according to claim 1, characterized in that, The shell (1) is provided with a shell groove (11), and the positioning tooth (5) is accommodated in the shell groove (11). The positioning tooth (5) has two opposite sides, one side of which is provided with a self-locking mechanism and a non-self-locking tooth meshing mechanism, and the other side is provided with an elastic element (7) between it and the wall forming the shell groove (11).

6. The angle swing adjustment device for the laparoscopic anastomosis device according to claim 1, characterized in that, The seat (2) is slidably mounted on the shell (1). A locking mechanism for engaging or disengaging is provided between the seat (2) and the adjusting gear (3). The seat (2) has a locking position and an unlocking position relative to the shell (1). When the seat (2) slides to the unlocking position, the locking mechanism disengages, and the adjusting gear (3) is adapted to be rotated. When the seat (2) slides to the locking position, the locking mechanism engages, and the adjusting gear (3) is locked and cannot be rotated.

7. The angle swing adjustment device for laparoscopic anastomosis according to claim 6, characterized in that, The locking mechanism includes a tongue (21) disposed on one of the adjusting gear (3) and the seat (2) and a slot (31) disposed on the other of the adjusting gear (3) and the seat (2) and engaged with the tongue (21).

8. A laparoscopic anastomosis device, characterized in that, Includes an angle swing adjustment device for a laparoscopic anastomosis device as described in any one of claims 1 to 7.

Images