Self-locking swing steering device of anastomat

Abstract

The utility model relates to the technical field of anastomats, in particular to an anastomat self-locking swing steering device which comprises a rotating unit, a movable pin shaft is arranged below the rotating unit and embedded into a kidney-shaped hole formed in a swing head connecting block, a movable window is formed in the swing head connecting block, and a protruding portion arranged on a swing head pull rod is contained in the movable window. The free end of the swing pull rod is rotationally connected with the control seat, so that the swing pull rod drives the control seat to swing; the self-locking unit is arranged between the rotating unit and the control seat and used for locking the control seat, and when the rotating unit rotates, the self-locking unit switches the control seat between a self-locking state and an unlocking state; and a gap is formed between the moving window and the lug boss in the axial direction of the self-locking unit. The rotating unit rotates to drive the swing connecting block to move linearly, then the control base is controlled to swing, the gap between the movable window and the protruding part has a time delay function on swing of the swing connecting block, and unlocking and then swing are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to anastomat technical field especially, it relates to a kind of anastomat self-locking swing steering device. BACKGROUND

[0002] Anastomat is mainly used for the operation such as suturing to tissue in surgical operation. Steering swing device can make the working end of anastomat flexibly steer and swing within a certain angle range, so that it can better adapt to the anatomical structure of surgical site, such as in some complex endoluminal surgery or narrow space surgical area, doctor can make anastomat accurately reach the tissue position needing processing by operating the device, facilitate anastomosis operation. The existing device is connected with swing head connecting block by knob device and gear transmission mode, the anastomat with stepless swing angle limiting mode appears on the market, doctor can stop locking at any angle within the set angle range during surgical operation. Specifically, the interference fit between torsional spring and swing head shell is utilized, and the friction between them is utilized to realize the rotation and locking at any angle, but during rotation, the increase or decrease deviation of torsional spring outer diameter is easy to cause, resulting in unstable self-locking effect, it is more difficult to accurately rotate the nail box to the required angle, and during rotation, it will produce larger shaking, affect the use of anastomat. SUMMARY

[0003] The utility model aims at solving above-mentioned defect, provide a kind of anastomat self-locking swing steering device.

[0004] In order to overcome the defects in the background art, the technical scheme adopted by the utility model to solve its technical problems is: an anastomat self-locking swing steering device, including rotating unit, mobile pin shaft is arranged below it, and the mobile pin shaft is embedded in the waist hole opened in the swing head connecting block so as to drive the swing head connecting block to move linearly when the rotating unit rotates, the swing head connecting block is opened and the mobile window is contained in the convex part provided on the swing head pull rod, the free end of the swing head pull rod is rotationally connected with the control seat, so as to drive the control seat to swing by the swing head pull rod;

[0005] Self-locking unit is arranged between the rotating unit and the control seat for locking the control seat, and the self-locking unit switches the control seat between the self-locking state and the unlocked state when the rotating unit rotates.

[0006] The gap between the mobile window and the convex part is in the axial direction of the self-locking unit.

[0007] Further improvement includes that two mobile pin shafts are oppositely arranged below the rotating unit.

[0008] Further improvement, including the self-locking unit comprises a fixed pull rod assembly, one end of the fixed pull rod assembly is provided with a hook-shaped part, the other end is provided with a plug part, and the hook-shaped part is in surface contact with the end surface of the rotating unit, so that the fixed pull rod assembly moves along the contour of the end surface of the rotating unit, a plurality of grooves are equidistantly arranged on the end surface of the rotating unit, the plug part is engaged with the tooth-shaped part arranged on the control seat, when the hook-shaped part completely slides into the groove during rotation of the rotating unit, the plug part is engaged with the tooth-shaped part, and when the hook-shaped part completely slides out of the groove, the plug part is in an unlocked state with the tooth-shaped part.

[0009] Further improvement, including the fixed pull rod assembly is provided with a fixed rod spring.

[0010] The beneficial effects of the utility model are that: the design drives the swing connecting block to move linearly through the rotation of the rotating unit, and then controls the swing of the control seat, the gap between the moving window and the protruding part can have a time delay function for the swing of the swing connecting block, and the self-locking stability is good, and large shaking is not easy to occur during rotation. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model is further described below in combination with the drawings and examples.

[0012] Figure 1 is the shaft side view of the utility model;

[0013] Figure 2 is Figure 1 is the enlarged view of B in the figure;

[0014] Figure 3 is the top view of the utility model;

[0015] Figure 4 is Figure 3 is the enlarged view of C in the figure;

[0016] Figure 5 is the partial enlarged view in the utility model;

[0017] Figure 6 is the partial side sectional view of the utility model;

[0018] Figure 7 is the top view of the swing head connecting block in the utility model;

[0019] Figure 8 is the axonometric view of the rotating unit in the utility model;

[0020] In the figure, 1 is a control seat, 2 is a swing head pull rod, 3 is a fixed pull rod assembly, 4 is a rotating unit, and 5 is a swing head connecting block;

[0021] 101 is a tooth-shaped part;

[0022] 201 - protrusion

[0023] 301 - plug portion, 302 - fixed rod spring, 303 - hook portion

[0024] 401 - moving pin shaft, 402 - groove

[0025] 501 - moving window, 502 - waist hole DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. All other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] According to Figure 1 , Figure 2 , Figure 3 , Figure 8 , an anastomat self-locking swing steering device comprises a rotating unit 4, a moving pin shaft 401 is arranged below the rotating unit 4, and the moving pin shaft 401 is embedded in a waist hole 502 arranged on a swing head connecting block 5, so that the swing head connecting block 5 is linearly moved when the rotating unit 4 rotates, a moving window 501 is arranged on the swing head connecting block 5, and a protrusion 201 arranged on a swing head pull rod 2 is accommodated in the moving window 501, so that the swing head connecting block 5 is moved while driving the swing head pull rod 2 to move, and a free end of the swing head pull rod 2 is rotationally connected with a control seat 1, so that the control seat 1 is swung through the swing head pull rod 2.

[0028] A self-locking unit is arranged between the rotating unit 4 and the control seat 1 for locking the control seat 1, and the control seat 1 is switched between a self-locking state and an unlocking state when the rotating unit 4 rotates.

[0029] The moving window 501 and the protrusion 201 have a gap in the axial direction of the self-locking unit, so that the control seat 1 is unlocked first and then swung.

[0030] In the embodiment, two moving pin shafts 401 are arranged oppositely below the rotating unit 4, and two swing head connecting blocks 5 are arranged, and the swing head connecting blocks 5 drive the control seat 1 to swing through the swing head pull rod 2, so as to ensure the stability of the swing of the control seat 1.

[0031] In the embodiment, as shown in Figure 4 , Figure 5 ,Figure 6 and Figure 7 As shown in the figure, the self-locking unit comprises a fixed pull rod assembly 3, one end of which is provided with a hook-shaped part 303 and the other end is provided with a plug part 301, and the hook-shaped part 303 is in contact with the end surface of the rotating unit 4, so that the fixed pull rod assembly 3 moves along the contour of the end surface of the rotating unit 4, a plurality of grooves 402 are equidistantly arranged on the end surface of the rotating unit 4, the plug part 301 is engaged with the tooth-shaped part 101 arranged on the control seat 1 to realize self-locking, when the hook-shaped part 303 completely slides into the groove 402 when the rotating unit 4 rotates, the plug part 301 is engaged with the tooth-shaped part 101, at this time, the control seat 1 is in a self-locking state, when the hook-shaped part 303 completely slides out of the groove 402, the plug part 301 is in an unlocked state with the tooth-shaped part 101, at this time, the plug part 301 is separated from the tooth-shaped part 101.

[0032] In this embodiment, in order to make the hook-shaped part 303 always in contact with the end surface of the rotating unit 4, the fixed pull rod assembly 3 is provided with a fixed rod spring 302.

[0033] Preferably, the rotating unit 4 is a knob, which is beneficial to realize precise adjustment.

[0034] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A self-locking swing steering device for a stapler, characterized in that, It includes a rotating unit (4), with a movable pin (401) below it. The movable pin (401) is embedded in the waist hole (502) on the swing head connecting block (5) so that the swing head connecting block (5) moves linearly when the rotating unit (4) rotates. The swing head connecting block (5) has a movable window (501) and the movable window (501) contains a protrusion (201) on the swing head pull rod (2). The free end of the swing head pull rod (2) is rotatably connected to the control seat (1), so that the control seat (1) swings through the swing head pull rod (2). The self-locking unit is arranged between the rotating unit (4) and the control seat (1) to lock the control seat (1). When the rotating unit (4) rotates, the self-locking unit switches the control seat (1) between the self-locking state and the unlocking state. There is a gap between the movable window (501) and the protrusion (201) in the axial direction of the self-locking unit.

2. The anastomosis device with self-locking swing steering as described in claim 1, characterized in that: Two movable pins (401) are arranged opposite each other below the rotating unit (4).

3. The anastomosis device with self-locking swing steering as described in claim 1, characterized in that: The self-locking unit includes a fixed pull rod assembly (3). One end of the fixed pull rod assembly (3) is provided with a hook-shaped part (303) and the other end is provided with a plug part (301). The hook-shaped part (303) contacts the end surface of the rotating unit (4) so ​​that the fixed pull rod assembly (3) moves according to the shape of the end surface of the rotating unit (4). Several grooves (402) are equally spaced on the end surface of the rotating unit (4). The plug part (301) engages with the toothed part (101) provided on the control seat (1). When the rotating unit (4) rotates, when the hook-shaped part (303) slides completely into the groove (402), the plug part (301) engages with the toothed part (101). When the hook-shaped part (303) slides completely out of the groove (402), the plug part (301) and the toothed part (101) are in an unlocked state.

4. The anastomosis device with self-locking swing steering as described in claim 3, characterized in that: The fixed rod assembly (3) is provided with a fixed rod spring (302).

Images