CN113476088A - Rotary shaft sleeve and anastomat thereof - Google Patents

Abstract

The invention relates to the technical field of medical instrument design, in particular to a rotary shaft sleeve and an anastomat thereof. The rotary shaft sleeve comprises a shell, a mounting opening formed in the shell, a mounting part positioned on the mounting opening and a plurality of support grooves formed in the mounting part; the mounting part is also provided with a sealing cover, and the sealing cover is provided with a plurality of buckles; the buckle is suitable for being clamped in the limiting groove so as to cover the sealing cover on the mounting part. According to the invention, the sealing cover is detachably arranged in the rotary shaft sleeve, when the rotary shaft sleeve is abnormal due to the damage of other parts in the instrument, the cover body of the sealing cover is reversely rotated to finish the disassembly of the sealing cover, and then the corresponding parts are replaced, so that the assembly flexibility of the instrument is improved, and the rejection rate of the parts is reduced.

Description

Rotary shaft sleeve and anastomat thereof

Technical Field

The invention relates to the technical field of medical instrument design, in particular to a rotary shaft sleeve and an anastomat thereof.

Background

The medical anastomat is a medical instrument frequently used in surgical operation, and is a medical device used for replacing traditional manual suture, wherein a gun head in the anastomat performs the cutting and suture functions, the movement of the gun head is mainly controlled by a rotating shaft sleeve, and the shell and a sealing cover of the rotating shaft sleeve are welded together by adopting an ultrasonic welding technology at present. Welding has the advantage of allowing a reliable connection of the connected parts, but also involves risks. Because other plastic parts are also installed in the parts to be connected, the plastic parts are very likely to be welded together in the welding process, the service performance of the anastomat is affected, and in addition, if the abnormality is caused by the damage of other parts in the instrument, the sealing cover cannot be detached due to the fact that the sealing cover and the rotating shaft sleeve are welded together, and the anastomat is directly scrapped.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the detachable sealing cover improves the flexibility of the equipment assembly and reduces the rejection rate of the anastomat parts.

The technical scheme adopted by the invention for solving the technical problems is as follows: the rotary shaft sleeve comprises a shell, a mounting opening formed in the shell, a mounting part positioned on the mounting opening and a plurality of support grooves formed in the mounting part; the mounting part is also provided with a sealing cover, and the sealing cover is provided with a plurality of buckles; the buckle is suitable for being clamped in the limiting groove so as to cover the sealing cover on the mounting part.

Further, the lateral grooves comprise vertical grooves and transverse grooves which are vertically arranged; the buckles are bulges which protrude out of the side surface of the sealing cover and are in one-to-one correspondence with the limiting grooves; the protrusion is adapted to move along the vertical slot to horizontally rotate into the transverse slot.

Furthermore, the top of the transverse groove is formed by connecting a plurality of sections of bending surfaces, and the bottom of the transverse groove is a plane; the upper surface of the buckle is formed by connecting a plurality of slope surfaces; and the slope surface is matched with the bending surface so as to be suitable for the buckle to be tightly clamped in the transverse groove along the bottom of the transverse groove.

Further, the opening of the transverse groove is flared for introducing a buckle.

Furthermore, the bending surfaces are in arc transition.

Further, the screw-fixing grooves are uniformly distributed on the inner wall of the mounting part.

Further, the sealing cover comprises a cover body and an annular flange which is positioned on the cover body and matched with the mounting part; wherein the annular flange is adapted to snap into the mounting portion; and the buckles are distributed on the outer side of the annular flange.

Further, the rotating shaft sleeve further comprises a steering assembly positioned in the mounting opening; the steering assembly includes: the steering shaft is arranged on the mounting opening, the center of the steering shaft penetrates through the steering shaft and is installed on the gear disc of the mounting opening, the clamping disc matched with the gear disc, and the gasket and the spring which are installed on the clamping disc.

The invention has the beneficial effects that:

according to the invention, the sealing cover is detachably arranged in the rotary shaft sleeve, so that the assembly risk caused by ultrasonic welding is avoided, the use risk of instruments is reduced, meanwhile, the welding procedures are reduced, and the assembly operation efficiency is improved. When the rotating shaft sleeve is abnormal due to the damage of other parts in the instrument, the cover body of the sealing cover can be reversely rotated to finish the disassembly of the sealing cover, and then the corresponding parts are replaced, so that the assembly flexibility of the instrument is improved, and the rejection rate of parts is reduced.

Drawings

The invention is further illustrated by the following figures and examples.

Fig. 1 is an exploded view of a rotary bushing of the present invention;

FIG. 2 is a schematic view of a housing of the rotary union of FIG. 1;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a schematic view of the inside structure of the closure shown in FIG. 1;

FIG. 5 is a schematic view of the outer configuration of the closure shown in FIG. 4;

fig. 6 is an enlarged schematic view at B in fig. 5.

In the figure:

the housing 1, the mounting opening 11, the mounting portion 12, the screw-receiving groove 13, the vertical groove 131, and the horizontal groove 132;

the steering assembly 2, the steering shaft 21, the sliding groove 211, the gear disc 22, the connecting hole 221, the bump 222, the triangular groove 223, the clamping disc 23, the mounting table 231, the support ring 232, the sliding rail 233, the triangular convex strip 234, the gasket 24 and the spring 25;

the sealing cover 3, the circular groove 31, the supporting platform 32, the annular flange 33 and the buckle 331.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 1, the present embodiment provides a rotary shaft sleeve including a housing 1, a steering assembly 2 installed in the housing 1, and a cover 3 outside the housing 1. The cover 3 is detachably mounted and covers the steering assembly 2 in the housing 1.

As shown in fig. 2-3, the housing 1 is a semi-circular structure with a hollow interior, the middle of the housing 1 is provided with a circular mounting opening 11, the housing 1 at the periphery of the mounting opening 11 is provided with a mounting portion 12 protruding outward, the housing between the mounting portion 12 and the mounting opening 11 forms a circular platform, the inner wall of the mounting portion 12 is provided with four supporting slots 13 in a concave manner, the supporting slots 13 include vertical slots and transverse slots, the vertical slots 131 are substantially rectangular through slots, the vertical slots 131 are uniformly distributed on the inner wall of the mounting portion 12, the vertical slots 131 are provided with the transverse slots 132 on the side wall close to the top of the mounting portion 12, the top of the transverse slots 132 is formed by splicing a plurality of slope surfaces, and the middle of the transverse slots is in arc transition.

As shown in fig. 1, the steering assembly 2 includes a steering shaft 21 disposed in the mounting opening 11, a shift dial 22 passing through the steering shaft 21 at the center and mounted in the mounting opening 11, a detent dial 23 engaged with the shift dial 22, and a washer 24 and a spring 25 mounted on the detent dial 23; the steering shaft 21 is approximately cylindrical, two sides of the steering shaft 21 are inwards concavely provided with corresponding sliding grooves 211, and the sliding grooves 211 are approximately U-shaped and are vertically arranged from top to bottom; the gear disc 22 is approximately disc-shaped, a connecting hole 221 is formed in the middle of the gear disc 22, the connecting hole 221 is approximately a circular through hole, the diameter of the connecting hole is slightly larger than that of the steering shaft 21, the gear disc 22 is suitable for being sleeved on the steering shaft 21, four bumps 222 are uniformly arranged on the side wall of the outer circumference of the gear disc 22, the distance between the bumps 222 is consistent with that between the vertical grooves 131 in the mounting portion 12, and a plurality of irregular triangular grooves 223 are further formed in the upper surface of the gear disc 22 along the circumference; the clamping disc 23 is also disc-shaped, the diameter of the clamping disc 23 is the same as that of the gear disc 22, an annular mounting table 231 is arranged in the middle of the upper surface of the clamping disc 23, a circle of support ring 232 is arranged on the outer side wall of the mounting table 231, two sliding rails 233 which are centrosymmetric are arranged on the inner side wall of the mounting table 231 in a protruding mode, the shapes of the sliding rails 233 correspond to those of the sliding grooves 211 in the steering shaft 21 and are in sliding connection with the sliding grooves 211, and a triangular protruding strip 234 is arranged on the lower surface of the clamping disc 23 and is suitable for being matched with the triangular grooves 223 of the gear disc 22 to complete gear shifting; the gasket 24 is substantially circular, the diameter of the inner ring is slightly larger than the supporting ring 232 of the mounting table 231 on the positioning plate 23, so as to be suitable for being sleeved on the periphery of the supporting ring 232, the spring 25 is sleeved on the periphery of the mounting table 231 on the positioning plate 23, and the bottom of the spring 25 abuts against the gasket 24.

As shown in fig. 4-6, the cover 3 is substantially circular, a circular groove 31 is concavely provided at the middle part of the inner side of the cover 3, and a ring of support base 32 is convexly provided at the circumferential edge of the circular groove, the outer diameter of the support base 32 is equivalent to the outer diameter of the spring 25 so as to be suitable for forming a fit with the spring 25; the inner side of the cover 3 is convexly provided with an annular flange 33 at a position close to the edge, the outer diameter of the annular flange 33 is equivalent to the inner diameter of the mounting part 12 around the mounting opening 11 on the shell 1 so as to be suitable for the cover 3 to be mounted in the mounting part 12, four buckles 331 are uniformly arranged on the outer edge of the annular flange 33, the buckles 331 are approximately rectangular blocks of cutting bodies, the width of the buckles 331 is equivalent to the width of the vertical grooves 131 on the mounting part 12 so as to be suitable for the buckles 331 to be in sliding connection with the vertical grooves 131, the upper surface of the buckles 331 is formed by splicing multiple sections of slopes and adopts circular arc transition in the middle, the upper surface of the buckles 331 is provided with a slope guide surface and multiple sections of high-low bulges, the height of the bulges close to the middle part is larger than the heights of the bulges at other positions, and the shape and the size of the buckles 331 are matched with the transverse grooves 132 on the vertical grooves 131 so as to be suitable for the buckles 331 to be embedded in the transverse grooves 132.

When the rotating shaft sleeve is assembled, the steering component 2 is firstly installed at a corresponding position in the installation opening, then the support table 32 in the sealing cover 3 is abutted against the spring 25 and the buckle 331 on the annular flange 33 is aligned with the vertical groove 131 of the shell 1 to press the sealing cover 3, and the sealing cover 3 is rotated clockwise while being pressed to enable the buckle 331 to be embedded in the horizontal groove 132, so that the installation is completed.

In conclusion, the sealing cover is arranged in the rotary shaft sleeve in the mode, so that the assembly risk caused by ultrasonic welding is avoided, the use risk of instruments is reduced, meanwhile, the welding procedures are reduced, and the assembly operation efficiency is improved. If the damage of other parts in the instrument leads to abnormity, the sealing cover can be rotated counterclockwise to be detached, and the corresponding parts can be replaced for use, so that the assembly flexibility of the instrument is improved, and the rejection rate of the parts is reduced.

In light of the foregoing description of preferred embodiments in accordance with the invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (9)

1. A rotary shaft sleeve is characterized by comprising a shell, a mounting opening formed in the shell, a mounting part positioned on the mounting opening and a plurality of support grooves formed in the mounting part; the mounting part is also provided with a sealing cover, and the sealing cover is provided with a plurality of buckles; the buckle is suitable for being clamped in the limiting groove so as to cover the sealing cover on the mounting part.

2. The rotary bushing of claim 1, wherein the lateral grooves include vertical and horizontal grooves that are vertically disposed; the buckles are bulges which protrude out of the side surface of the sealing cover and are in one-to-one correspondence with the limiting grooves; the protrusion is adapted to move along the vertical slot to horizontally rotate into the transverse slot.

3. The rotary shaft sleeve as claimed in claim 2, wherein the top of the transverse groove is formed by connecting a plurality of bending surfaces, and the bottom of the transverse groove is a plane; the upper surface of the buckle is formed by connecting a plurality of slope surfaces; and the slope surface is matched with the bending surface so as to be suitable for the buckle to be tightly clamped in the transverse groove along the bottom of the transverse groove.

4. The rotary bushing of claim 2, wherein the opening of the transverse slot is flared for introducing a snap.

5. The rotary bushing of claim 3, wherein the curved surfaces transition through a circular arc.

6. The rotary bushing of claim 1, wherein the crush slots are evenly distributed on the inner wall of the mounting portion.

7. The swivel sleeve of claim 6, wherein said cover comprises a cover body, an annular flange on the cover body mating with the mounting portion; wherein the annular flange is adapted to snap into the mounting portion; and the buckles are distributed on the outer side of the annular flange.

8. The rotary bushing of claim 6, further comprising a steering assembly located within the mounting opening; the steering assembly includes: the steering shaft is arranged on the mounting opening, the center of the steering shaft penetrates through the steering shaft and is installed on the gear disc of the mounting opening, the clamping disc matched with the gear disc, and the gasket and the spring which are installed on the clamping disc.

9. An anastomat comprising a rotating sleeve according to any one of claims 1 to 8.

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