CN220045971U - Gear switching structure and anastomat - Google Patents

Abstract

The present disclosure provides a gear switching structure and anastomat, this gear switching structure is used for switching the stroke gear of anastomat body, includes: the bracket is arranged on the anastomat body and is provided with a lug; the driving assembly is arranged on the bracket, a plurality of notches are formed in the driving assembly, and the convex blocks are respectively matched with the different notches when the driving assembly rotates to different positions so as to position the driving assembly at a target position; the connecting piece is arranged on the driving assembly, a plurality of grooves are formed in the connecting piece, and the connecting piece moves axially under the rotation of the driving assembly; the clamping piece is connected with the anastomat body, and when the connecting piece moves to different positions, the clamping piece is respectively matched with different grooves in a clamping way, so that the switching of the stroke gears is realized. The gear switching structure is beneficial to blind operation of gear adjustment of the anastomat body, and ensures convenience, high efficiency and accuracy of gear adjustment of the anastomat body.

Description

Gear switching structure and anastomat

Technical Field

The utility model relates to the technical field of anastomat, in particular to a gear switching structure and an anastomat.

Background

Anastomat (surgicalstabler) is a surgical instrument commonly used in surgery at present, and replaces traditional manual suturing, and is mainly applied to the sealing of the residual ends of organs and the anastomosis of incisions in surgical treatment. Purely manual instruments are currently in common use in the market, and some electric products are developed and used along with the development of automation trend. The use of the electric appliance improves the stability during surgical cutting anastomosis and greatly improves the use condition of doctors.

When the prior anastomat selects gears, blind operation is difficult, and the gears are frequently adjusted and selected by experience, so that accurate adjustment cannot be realized. Therefore, the problems of complicated adjustment, incomplete adjustment, low efficiency and the like exist, so that the operation is affected, and the smoothness of the operation is reduced.

The information disclosed in this background section is only for enhancement of understanding of the general background of the disclosure and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

An object of the present disclosure is to provide a gear switching structure for switching a stroke gear of a stapler body, including:

the bracket is arranged on the anastomat body and is provided with a lug;

the driving assembly is arranged on the bracket, a plurality of notches are arranged on the driving assembly, and the convex blocks are respectively matched with the different notches when the driving assembly rotates to different positions so as to position the driving assembly at a target position;

the connecting piece is arranged on the driving assembly, a plurality of grooves are formed in the connecting piece, and the connecting piece moves axially under the rotation of the driving assembly;

the clamping piece is connected with the anastomat body, and when the connecting piece moves to different positions, the clamping piece is respectively matched with different grooves in a clamping way so as to realize the switching of stroke gears.

In one or more embodiments, the driving assembly includes a threaded sleeve, and the bracket is provided with a connection hole, and the threaded sleeve is connected in the connection hole and can rotate in the connection hole.

In one or more embodiments, the outer wall of the threaded sleeve is provided with a limit part, an annular groove is arranged around the end part of the threaded sleeve, a clamp is arranged corresponding to the annular groove, and the clamp and the limit part are positioned on two sides of the connecting hole so as to rotate the threaded sleeve to be limited in the connecting hole.

In one or more embodiments, the bracket includes a side plate, the connection hole is provided on the side plate, and the bump is provided on the side plate.

In one or more embodiments, the connector includes a threaded rod, the inner wall of the threaded sleeve is provided with threads, the threaded rod is in threaded connection with the threads, and circumferential rotation of the threaded sleeve can drive the threaded rod to move axially along the threaded rod.

In one or more embodiments, the connector further includes a gear block, and the plurality of grooves are provided on the gear block.

In one or more embodiments, the stapler body is provided with a travel indicator, the travel indicator is provided with an opening, and the threaded sleeve can rotate in the opening.

In one or more embodiments, a plurality of scale marks are arranged on the periphery of the opening, the driving assembly further comprises a stroke adjusting knob, the stroke adjusting knob comprises a screwing contact portion and a shielding portion, the shielding portion is used for shielding the plurality of scale marks, and an avoidance portion exposing one scale mark is arranged on the shielding portion.

In one or more embodiments, the stapler further comprises an elastic piece, one end of the elastic piece is connected with the stapler body, the other end of the elastic piece is connected with the clamping piece, and when the connecting piece is switched between grooves in different positions, the elastic piece is compressed first and then reset.

The present disclosure also provides a stapler comprising a gear switching structure as described above.

Compared with the prior art, the gear switching structure according to the present disclosure has the following advantages:

through the cooperation of switching of a plurality of notches on the drive assembly and the lug on the support to and through the cooperation of switching of joint spare on a plurality of recesses, make operating personnel can be accurate carry out the gear and switch, be favorable to the blind operation to the adjustment of anastomat body gear, guaranteed the convenience, the high efficiency and the accuracy of the gear adjustment of anastomat body.

Drawings

FIG. 1 is a schematic overall structure of a gear shift structure according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of another angle of a gear shift structure according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a bracket of a gear shift structure according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a drive assembly of a gear shifting structure according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a travel adjustment knob and travel indicator of a gear shifting structure according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a connection member and a rack of a gear shift structure according to an embodiment of the present disclosure

Fig. 7 is an overall mechanism schematic of a gear shift lever switching structure stapler according to an embodiment of the present disclosure.

The main reference numerals illustrate:

1. a stapler body; 2. a bracket; 21. a side plate; 211. a connection hole; 212. a bump; 22. a first support plate; 23. a second support plate; 3. a drive assembly; 31. a threaded sleeve; 311. a thread; 312. a limit part; 3121. a notch; 313. an annular groove; 32. a travel adjustment knob; 321. screwing the contact part; 322. a shielding part; 323. an avoidance unit; 33. a limit part; 4. a clamping piece; 41. an elastic member; 5. a connecting piece; 51. a moving plate; 52. a gear block; 521. a groove; 53. a threaded rod; 54. a stroke control block; 6. a travel indicator; 7. a rack; 71. a stop block; 8. and (5) clamping the clamp.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the present disclosure, but not all embodiments. The components of the embodiments of the present disclosure, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In describing embodiments of the present disclosure, it should be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, or that is conventionally put in place when the product of the application is used, or that is conventionally understood by those skilled in the art, merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present disclosure.

In describing the embodiments of the present disclosure, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this disclosure will be understood by those of ordinary skill in the art in the specific context.

In the description of the embodiments of the present disclosure, it should be further noted that, as used herein, the terms "first," "second," and the like do not denote a particular order or sequence, nor are they used to limit the disclosure, but are merely used to distinguish one element or operation from another in the same technical terms.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in fig. 1 to 7, a gear switching structure according to an embodiment of the present disclosure is used for switching a stroke gear of a stapler body 1, and includes a bracket 2 provided on the stapler body 1, wherein a bump 212 is provided on the bracket 2; the driving component 3 is arranged on the bracket 2, a plurality of notches 3121 are arranged on the driving component 3, and the convex blocks 212 are respectively matched with the different notches 3121 when the driving component 3 rotates to different positions so as to position the driving component 3 at a target position; the connecting piece 5 is arranged on the driving assembly 3, a plurality of grooves 521 are formed in the connecting piece 5, and the connecting piece 5 moves axially under the rotation of the driving assembly 3; the clamping piece 4 is connected with the anastomat body 1, and when the connecting piece 5 moves to different positions, the clamping piece 4 is respectively matched with different grooves 521 in a clamping way so as to realize the switching of stroke gears.

In the above structure, through the switching cooperation of the plurality of notches 3121 on the driving component 3 and the protruding blocks 212 on the bracket 2 and the switching cooperation of the clamping piece 4 on the plurality of grooves 521, an operator can accurately switch gears, which is favorable for blind operation of gear adjustment of the anastomat body 1, and ensures convenience, high efficiency and accuracy of gear adjustment of the anastomat body 1.

It should be appreciated that the gear switching structure of the present disclosure is used for adjusting the rack 7 on the stapler body 1, wherein one side of the rack 7 is provided with a plurality of stoppers 71 with different heights, and the control requirements of different strokes of the rack 7 are achieved by controlling the stroke control block 54 on the gear switching mechanism to cooperate with the stoppers 71 with different heights (i.e. when the stroke control block 54 cooperates with the stoppers 71 with lower heights in an abutting manner, the stroke of the rack 7 moving is shorter, and when the stroke control block 54 cooperates with the stoppers 71 with higher heights in an abutting manner, the stroke of the rack 7 moving is longer).

Specifically, as shown in fig. 1, 2 and 3, the bracket 2 includes a side plate 21, and a first support plate 22 and a second support plate 23 located on one side of the side plate 21, one end of the first support plate 22 is connected to one end of the side plate 21, and one end of the second support plate 23 is connected to the other end of the side plate 21. The first support plate 22 and the second support plate 23 are both connected to the stapler body 1 to fix the support 22 to the stapler body 1.

The driving assembly 3 includes a screw sleeve 31, and in order to install the screw sleeve 31, in a preferred embodiment, a coupling hole 211 is formed in the side plate 21, and an outer diameter of the screw sleeve 31 is smaller than an inner diameter of the coupling hole 211 so that the screw sleeve 31 can be inserted into the coupling hole 211.

As shown in fig. 2, in order to realize the rotational connection of the threaded sleeve 31 on the connecting piece 5, so as to drive the connecting piece 5 to move axially when the threaded sleeve 31 rotates circumferentially, a limit part 312 is arranged on the outer wall of the threaded sleeve 31, an annular groove 313 is arranged around the end part of the threaded sleeve 31, a clamp 8 is arranged corresponding to the annular groove 313, the minimum distance between the clamp 8 and the limit part 312 is greater than the thickness of the side plate 21 along the direction perpendicular to the rack 7, so that the threaded sleeve 31 can be mounted on the connecting hole 211 of the side plate 21 through the clamping action of the annular groove 313 and the limit part 312, and the clamping action of the annular groove 313 and the limit part 312 can only prevent the threaded sleeve 31 from falling off from the connecting hole 211 without affecting the rotation of the threaded sleeve 31 under acting force.

Referring to fig. 4, the limiting portion 312 is an annular plate disposed around the outer wall of the threaded sleeve 31, and the groove 521 is disposed on a surface of the limiting portion 312 adjacent to the annular groove 313.

In one embodiment, the connection 5 comprises a moving plate 51, a threaded rod 53 and a gear block 52. The threaded rod 53 is disposed on one side of the moving plate 51, the gear block 52 is disposed on the other side of the moving plate 51, and the plurality of grooves 521 are disposed on the gear block 52. The inner wall of the threaded sleeve 31 is provided with threads 311, the threads 311 are in threaded engagement with the threaded rod 53, and rotating the threaded sleeve 31 circumferentially drives the threaded rod 53 in its axial direction, thereby switching the clamping member 4 between the grooves 521.

Referring to fig. 5 and 7, in order to accurately control the shift between gears, in one embodiment, the stapler body 1 is provided with a travel indicator 6, a hole in the middle of the travel indicator 6 is configured to be in plug-fit with the threaded sleeve 31, the hole is used to pass the threaded sleeve 31 through the travel indicator 6, and the hole is in clearance fit with the threaded sleeve 31 to prevent the threaded sleeve 31 from being blocked from rotating. A plurality of scale marks are arranged on the periphery of the opening.

A plurality of scale marks are arranged on the periphery of the opening. The threaded sleeve 31 is sleeved with a stroke adjusting knob 32, the stroke adjusting knob 32 comprises a screwing contact portion 321 and a shielding portion 322 located at one end of the screwing contact portion 321, the shielding portion 322 is a ring plate arranged around the screwing contact portion 321 in a circle, the shielding portion 322 is used for shielding the plurality of scale marks, and an avoidance portion 323 exposing one scale mark is arranged on the shielding portion 322. The stroke adjusting knob 32 can be rotated according to the stroke adjusting requirement, so that the avoiding part 323 of the stroke adjusting knob 32 corresponds to the required scale, and the stroke adjustment is more visual, convenient and accurate.

As shown in fig. 6, in order to facilitate direct switching of the clamping member 4 in the groove 521, an elastic member 41 is disposed on the clamping member 4, the elastic member 41 is connected with the stapler body 1, and when switching between the grooves 521, an upward force is applied to the clamping member 4 by the side wall of the groove 521, and the clamping member 4 has a movement tendency away from the groove 521 against the force of the elastic member 41. When the clamping member 4 reaches the notch of the groove 521 and is separated from the notch, the clamping member 4 enters the adjacent groove 521 under the action of the elastic member 41, so as to complete the shift.

In a preferred embodiment, the stroke adjustment knob 32 can be screwed according to the requirement, so that the threaded rod 53 pushes the plurality of grooves 521 on the gear block 52 to switch on the clamping member 4 through the moving plate 51, so as to meet the requirement of corresponding stroke adjustment.

In a preferred embodiment, when the threaded sleeve 31 rotates circumferentially to drive the connecting member 5 to move axially, the locking member 4 switches between the grooves 521, and the switching of the protrusions 212 between the adjacent two notches 3121 is synchronized with the switching of the locking member 4 between the adjacent two grooves 521, so that the operator can control the adjustment of the gear change by the stroke adjustment knob 32.

The disclosure also provides a stapler comprising the gear switching structure.

Compared with the prior art, the gear switching structure according to the present disclosure has the following advantages:

through the cooperation of switching of a plurality of notches 3121 on the drive assembly 3 and the lug 212 on the support 2 and through the cooperation of switching of joint spare 4 on a plurality of recesses 521, make operating personnel can be accurate carry out the gear switching, be favorable to the blind operation to the adjustment of anastomat body 1 gear, guaranteed the convenience, the high efficiency and the accuracy of the gear adjustment of anastomat body 1.

The foregoing descriptions of specific exemplary embodiments of the present disclosure are presented for purposes of illustration and description. The description is not intended to limit the disclosure to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the present disclosure and its practical application to thereby enable one skilled in the art to make and utilize the present disclosure in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. The scope of the disclosure is intended to be defined by the claims and equivalents thereof.

Claims (10)

1. A gear switching structure for switching a stroke gear of a stapler body, comprising:

the bracket is arranged on the anastomat body and is provided with a lug;

the driving assembly is arranged on the bracket, a plurality of notches are arranged on the driving assembly, and the convex blocks are respectively matched with the different notches when the driving assembly rotates to different positions so as to position the driving assembly at a target position;

the connecting piece is connected with the driving assembly, a plurality of grooves are formed in the connecting piece, and the connecting piece moves axially under the rotation of the driving assembly;

the clamping piece is arranged on the anastomat body and is respectively matched with different grooves in a clamping way when the connecting piece moves to different positions so as to realize the switching of stroke gears.

2. The gear shifting structure of claim 1, wherein the driving assembly includes a threaded sleeve, and the bracket is provided with a connection hole, and the threaded sleeve is connected to the connection hole and can rotate in the connection hole.

3. The gear shifting structure of claim 2, wherein the outer wall of the threaded sleeve is provided with a limiting portion, an annular groove is formed around the end portion of the threaded sleeve, a clip is arranged corresponding to the annular groove, and the clip and the limiting portion are respectively located at two sides of the connecting hole so as to limit rotation of the threaded sleeve in the connecting hole.

4. The shift position switching structure according to claim 2, wherein said bracket includes a side plate, said connecting hole is provided on said side plate, and said projection is provided on said side plate.

5. The shift position switching structure according to claim 2, wherein the connecting member includes a threaded rod, the inner wall of the threaded sleeve is provided with threads, the threaded rod is in threaded engagement with the threads, and circumferential rotation of the threaded sleeve can drive the threaded rod to move axially along the threaded rod.

6. The gear shift structure of claim 5, wherein the connecting member further comprises a gear block, and the plurality of grooves are provided on the gear block.

7. The gear shifting structure of claim 2, wherein the stapler body is provided with a travel indicator, the travel indicator is provided with an opening, and the threaded sleeve is rotatable within the opening.

8. The gear switching structure according to claim 7, wherein a plurality of graduation marks are provided on the periphery of the opening, the driving assembly further comprises a stroke adjusting knob, the stroke adjusting knob comprises a screwing contact portion and a shielding portion, the shielding portion is used for shielding the graduation marks, and an avoiding portion exposing one graduation mark is provided on the shielding portion.

9. The gear shifting structure of claim 1, further comprising an elastic member, wherein one end of the elastic member is connected to the anastomat body, the other end of the elastic member is connected to the clamping member, and the elastic member is compressed and then restored when the connecting member is shifted between grooves at different positions.

10. A stapler comprising a gear shift structure according to any one of claims 1 to 9.