CN215839275U

CN215839275U - Swing driving mechanism of electric endoscope anastomat

Info

Publication number: CN215839275U
Application number: CN202122409996.XU
Authority: CN
Inventors: 王海龙; 吴宇雷; 王伟
Original assignee: Changzhou Wake Medical Devices Co ltd
Current assignee: Changzhou Wake Medical Devices Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-18
Anticipated expiration: 2031-09-30

Abstract

The utility model provides a swinging head driving mechanism of an electric endoscope anastomat, which comprises a swinging head connecting block, a swinging head bolt, a swinging head fixing nut and a torque output mechanism for driving the swinging head fixing nut to rotate; one end of the limiting transmission strip is connected with the nail bin assembly, and the other end of the limiting transmission strip is fixed with the swing head connecting block; the front end of the swing bolt is rotationally clamped with the swing connecting block and drives the swing connecting block to move axially, the rear end of the swing bolt is in threaded connection with the swing fixing nut, and a radial limiting structure for limiting the swing bolt to rotate radially is further arranged on the swing bolt. The utility model has reasonable structural design, can effectively and stably convert the output torque of the speed reducing motor into linear motion, realizes the telescopic motion of the limiting transmission strip along the axial direction, and realizes the driving of the nail bin assembly to swing in the horizontal direction.

Description

Swing driving mechanism of electric endoscope anastomat

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an electric endoscope anastomat head swinging driving mechanism.

Background

The endoscope anastomat is one of important instruments for endoscope operation, utilizes titanium nails to separate or inosculate tissues, is simple and rapid to operate, and can replace the traditional manual suture. The titanium nail is used for separating or anastomosing the tissue, the operation is simple, convenient and rapid, and the operation time is greatly shortened. The endoscope anastomat enables the anastomosis with narrow surgical field and deeper part which is difficult to manually operate to become easy, accurate, firm and reliable, and obviously reduces the incidence rate of anastomotic fistula.

The anastomat can be divided into a manual stapler and an electric stapler according to different power transmission modes. The manual endoscope anastomat is used for suturing tissues by manually controlling the percussion nail bin assembly. The electric endoscope anastomat cuts off tissues between the two anastomotic nails when the anastomotic nails are triggered through power sensing.

At present, current electronic chamber mirror anastomat, in use need realize that the barrel subassembly drives the synchronous rotation of nail storehouse subassembly, can control nail storehouse subassembly simultaneously again alone and realize carrying out wobbling operation for barrel subassembly tip. For example, CN111973243A discloses a surgical cutting and suturing instrument, which uses an electric deflector to drive an actuator to implement a deflection (head swing) in a range of 0 ° to 180 ° in a horizontal direction, and uses an electric rotator to implement an electric rotation of the electric deflector, so as to drive the actuator to rotate at any angle in a range of 0 ° to 360 °. The swinging head is realized by transmitting the torque output by the motor into linear motion through the conduction of the screw rod nut. However, in this process, the stability of transmission is realized by the stability of the output screw rod of the deflection motor and the nut, the rotating sleeve is arranged outside the nut and driven by the nut to move along the axial direction of the screw rod, the transmission stability of the screw rod and the nut is easily affected when the load of the rotating sleeve is large, and a further improved design for driving the swinging head is necessary on the basis of the prior art.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: in order to overcome the defects of the prior art, the utility model provides the oscillating driving mechanism of the electric endoscope anastomat, which can effectively drive the limiting driving strip to axially move, has stable load and good transmission.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a swing driving mechanism of an electric endoscope anastomat is arranged in the electric endoscope anastomat, the electric endoscope anastomat comprises a nail bin assembly and a limiting transmission strip for driving the nail bin assembly to swing, the limiting transmission strip is axially displaced, and the swing driving mechanism of the electric endoscope anastomat comprises a swing connecting block, a swing bolt, a swing fixing nut and a torque output mechanism for driving the swing fixing nut to rotate; one end of the limiting transmission strip is connected with the nail bin assembly, and the other end of the limiting transmission strip is fixed with the swinging head connecting block; the front end of the swing bolt is rotationally clamped with the swing connecting block and drives the swing connecting block to move axially, the rear end of the swing bolt is in threaded connection with the swing fixing nut, and the swing bolt is further provided with a radial limiting structure for limiting the swing bolt to rotate radially.

In order to facilitate the positioning of the swing driving mechanism, the electric endoscope anastomat comprises a rotating handle and a fixed support, the end part of the fixed support stretches into the rotating handle, the torque output mechanism is arranged on the fixed support, a swing fixing nut and a swing bolt are rotatably connected in the rotating handle, and a swing connecting block is clamped between the swing bolt and the inner wall of the rotating handle.

Furthermore, the rotary motion can be transmitted to the axial motion of the head swinging bolt at the position of the head swinging bolt through the arrangement of the radial limiting structure, the radial limiting structure comprises a radial limiting column, the radial limiting column is arranged in parallel with the axis of the head swinging bolt, one end of the radial limiting column is in limited connection with the head swinging bolt, and the other end of the radial limiting column is in limited connection with the fixed support.

Furthermore, torque output mechanism include gear motor, rotatory driving gear and yaw driving gear, the gear motor output drive rotatory driving gear and rotate, rotatory driving gear mesh and drive yaw driving gear and rotate, yaw fixation nut inner wall have the profile of tooth, this profile of tooth meshes with yaw driving gear and is driven by yaw driving gear and rotate, gear motor fix on the fixed bolster.

Preferably, in order to guarantee that the swing bolt can be effectively positioned with the swing connecting block in the axial direction, the swing bolt can radially rotate without interfering with the swing connecting block, the swing connecting block is provided with a matching lug, the peripheral surface of the swing bolt is provided with an annular groove, and the matching lug is in annular sliding clamping connection with the annular groove.

The swing head driving mechanism of the electric endoscope anastomat has the advantages that the structural design is reasonable, the output torque of the speed reducing motor can be effectively and stably converted into linear motion through the design of the swing head bolt and the swing head fixing nut, the limiting transmission strip can perform telescopic motion along the axial direction, and the nail bin assembly can be driven to swing in the horizontal direction.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of an electric endoscopic stapler in the preferred embodiment of the utility model.

Fig. 2 is an enlarged schematic view at a in fig. 1.

FIG. 3 is a perspective view of the position limiting transmission bar, the swing head connecting block and the swing head bolt in the preferred embodiment of the present invention.

In the figure, the device comprises a limiting transmission bar 1, a rotating handle 3, a fixed support 4, a swinging connecting block 5, a swinging bolt 6, a swinging fixing nut 7, a speed reducing motor 8, a rotating transmission gear 9, a swinging transmission gear 10, a radial limiting column 11 and an annular groove.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1 and 2, the electric endoscopic stapler head swing driving mechanism is a preferred embodiment of the present invention, and includes a staple cartridge assembly, a limit transmission strip 1 for driving the staple cartridge assembly to swing, a rotating handle 2 and a fixed support 3, wherein the limit transmission strip 1 axially displaces relative to the fixed support 3. The end part of the fixed support 3 extends into the rotating handle 2, and the head swinging driving mechanism is arranged in the rotating handle 2.

The swing driving mechanism comprises a swing connecting block 4, a swing bolt 5, a swing fixing nut 6 and a torque output mechanism for driving the swing fixing nut 6 to rotate. The torque output mechanism is arranged on the fixed support 3, the swing fixing nut 6 and the swing bolt 5 are rotatably connected in the rotating handle 2, and the swing connecting block 4 is clamped between the swing bolt 5 and the inner wall of the rotating handle 2.

The torque output mechanism comprises a speed reducing motor 7, a rotary transmission gear 8 and a swinging transmission gear 9. The reduction motor 7 is fixed on the fixed bracket 3. The output end of the speed reducing motor 7 drives the rotary transmission gear 8 to rotate, the head swing transmission gear 9 is sleeved outside the rotary transmission gear 8, and the inner ring is meshed with the rotary transmission gear 8 and driven to rotate by the rotary transmission gear 8. The outer ring of the swing transmission gear is provided with a tooth shape, the inner wall of the rear end of the swing head fixing nut 6 is provided with a tooth shape, and the two groups of tooth shapes are meshed with each other, namely the swing transmission gear drives the swing head fixing nut 6 to rotate. The inner peripheral surface of the front end of the swing head fixing nut 6 is provided with threads, and the outer peripheral surface of the rear end of the swing head bolt 5 is provided with threads matched with the threads. When the swing head fixing nut 6 rotates, the swing head bolt 5 is in threaded fit connection with the swing head fixing nut.

In practical design, as shown in fig. 3, the swing bolt 5 is further provided with a radial limiting structure for limiting the radial rotation of the swing bolt 5. The radial limiting structure comprises radial limiting columns 10, the number of the radial limiting columns 10 is 2, and the radial limiting columns are arranged symmetrically. The radial limiting column 10 is arranged in parallel with the axis of the swing bolt 5, one end of the radial limiting column 10 is in limiting insertion connection in the swing bolt 5, and the other end of the radial limiting column is in limiting insertion connection on the fixed support 3. In the process of threaded matching of the swing bolt 5 and the swing fixing nut 6, the radial limiting structure transmits the rotary motion to the axial motion of the swing bolt 5 at the position of the swing bolt 5. Because the axial motion space needs to be provided for the swing bolt 5, the rear end of the radial limiting column 10 needs to be matched with the fixing support 3 for axial fixation, as shown in fig. 3, the rear end can adopt a notch with an annular design for axial limiting fixation, and the front end is inserted into the swing bolt 5, so that the maximum stroke can not fall off from the swing bolt 5.

One end of the limiting transmission strip 1 is connected with the nail bin assembly, and the other end of the limiting transmission strip is fixed with the swing head connecting block 4. The front end of the swing bolt 5 is rotationally clamped with the swing connecting block 4. The swing head connecting block 4 is provided with a matching lug, the peripheral surface of the swing head bolt 5 is provided with an annular groove 11, and the matching lug is in annular sliding clamping connection with the annular groove 11. So, through the cooperation design of ring channel 11 and cooperation lug, yaw bolt 5 can be in the axial effectively fixed a position with yaw connecting block 4, but yaw bolt 5 radial rotation does not take place to interfere with yaw connecting block 4 again simultaneously.

The working process is as follows:

the gear motor 7 works to drive the rotary transmission gear 8 to rotate, the rotary transmission gear 8 drives the swing transmission gear 9 to rotate, and the swing transmission gear 9 drives the swing fixing nut 6 to rotate. The swing head fixing nut 6 is in threaded connection with the swing head bolt 5, meanwhile, the swing head bolt 5 is located by the radial limiting column 10 in the radial direction, the swing head bolt 5 cannot rotate freely, after the swing head fixing nut 6 is located in the radial direction, the swing head fixing nut 6 rotates, the swing head bolt 5 moves in the axial direction, and the process that the rotation torque is converted into linear motion is achieved.

The electronic chamber mirror anastomat yaw actuating mechanism of so design, structural design is reasonable, through the design of yaw bolt 5, yaw fixation nut 6, can be with the effective stable conversion of output torque of gear motor 7 linear motion, realizes that spacing transmission strip 1 carries out concertina movement along the axial, realizes driving the swing of nail storehouse subassembly on the horizontal direction.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an electronic chamber mirror anastomat yaw actuating mechanism, sets up in electronic chamber mirror anastomat, and electronic chamber mirror anastomat includes the nail storehouse subassembly and drives the wobbling spacing transmission strip (1) of nail storehouse subassembly, axial displacement, its characterized in that are done in spacing transmission strip (1): the electric endoscope anastomat head swinging driving mechanism comprises a head swinging connecting block (4), a head swinging bolt (5), a head swinging fixing nut (6) and a torque output mechanism for driving the head swinging fixing nut (6) to rotate;

one end of the limiting transmission strip (1) is connected with the nail bin assembly, and the other end of the limiting transmission strip is fixed with the swinging head connecting block (4);

the front end of the swing bolt (5) is connected with the swing connecting block (4) in a rotating and clamping mode and drives the swing connecting block (4) to move axially, the rear end of the swing bolt (5) is connected with the swing fixing nut (6) in a threaded mode, and the swing bolt (5) is further provided with a radial limiting structure for limiting the swing bolt (5) to rotate radially.

2. The electric endoscopic stapler head swinging driving mechanism according to claim 1, wherein: electronic chamber mirror anastomat include twist grip (2) and fixed bolster (3), fixed bolster (3) tip stretch into inside twist grip (2), moment of torsion output mechanism set up on fixed bolster (3), yaw fixation nut (6) and yaw bolt (5) rotate to be connected in twist grip (2), yaw connecting block (4) joint between yaw bolt (5) and twist grip (2) inner wall.

3. The electric endoscopic stapler head swinging driving mechanism according to claim 2, wherein: the radial limiting structure comprises a radial limiting column (10), the radial limiting column (10) is parallel to the axis of the swing bolt (5), one end of the radial limiting column (10) is in limiting connection with the swing bolt (5), and the other end of the radial limiting column is in limiting connection with the fixed support (3).

4. The electric endoscopic stapler head swinging driving mechanism according to claim 2, wherein: the torque output mechanism comprises a speed reducing motor (7), a rotary transmission gear (8) and a swinging transmission gear (9), the output end of the speed reducing motor (7) drives the rotary transmission gear (8) to rotate, the rotary transmission gear (8) is meshed with and drives the swinging transmission gear (9) to rotate, the inner wall of the swinging fixing nut (6) is provided with a tooth shape, the tooth shape is meshed with the swinging transmission gear (9) and is driven to rotate by the swinging transmission gear (9), and the speed reducing motor (7) is fixed on the fixing support (3).

5. The electric endoscopic stapler head swinging driving mechanism according to claim 2, wherein: the swing head connecting block (4) on have a cooperation lug, swing head bolt (5) outer peripheral face ring channel (11) have, cooperation lug and ring channel (11) annular slip joint.