CN218792364U - Nail bin mechanism and arc anastomat - Google Patents

Abstract

The utility model provides a nail storehouse mechanism and arc anastomat relates to medical instrument technical field. The nail bin mechanism comprises a nail bin body, a nail pushing piece, a cutting assembly and a pushing piece; the nail bin body is provided with a mounting groove and an arc-shaped rail, the nail pushing piece is mounted in the mounting groove, the pushing piece is mounted on the arc-shaped rail and is in sliding fit with the arc-shaped rail, and the cross sections of the side walls of the arc-shaped rail are both arc-shaped; one end of the pushing piece is connected with the cutting assembly, and the other end of the pushing piece is connected with the nail pushing piece; when the pushing piece moves along the circumferential direction of the arc-shaped track, the nail pushing piece pushes the anastomosis nail to be stapled on the affected part under the action of the pushing piece. The utility model provides a nail storehouse mechanism has solved the anastomat that exists among the prior art and has excised the technical problem of inefficiency when irregularly shaped focus.

Description

Nail bin mechanism and arc anastomat

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a nail storehouse mechanism and arc anastomat is related to.

Background

The anastomat is a medical instrument frequently used when a surgical operation is carried out on physiological tissues such as intestinal tracts and the like, and the anastomat is equipment used in medicine to replace the traditional manual suture.

The existing anastomat adopts a linear cutting mode or an annular cutting mode, when a focus with an irregular shape is encountered, the focus is difficult to completely cut off at one time, the focus can be completely cut off only by cutting for many times, and the problem of low efficiency exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nail storehouse mechanism and arc anastomat to alleviate the anastomat that exists among the prior art and excise the technical problem of inefficiency when irregularly shaped focus.

In order to solve the technical problem, the utility model provides a technical scheme lies in:

on the first hand, the utility model provides a nail bin mechanism which comprises a nail bin body, a nail pushing piece, a cutting assembly and a pushing piece;

the nail bin body is provided with a mounting groove and an arc-shaped rail, the nail pushing piece is mounted in the mounting groove, the pushing piece is mounted on the arc-shaped rail and is in sliding fit with the arc-shaped rail, and the cross sections of the side walls of the arc-shaped rail are both arc-shaped;

one end of the pushing piece is connected with the cutting assembly, and the other end of the pushing piece is connected with the nail pushing piece;

when the pushing piece moves along the circumferential direction of the arc-shaped track, the nail pushing piece pushes the anastomosis nail to be stapled on the affected part under the action of the pushing piece.

Further, in the case of a liquid crystal display device,

the staple cartridge body comprises first and second opposing sidewalls, the arcuate track being located between the first and second sidewalls;

the cross sections of the first side wall and the second side wall are both arc-shaped and are in the same direction as the concave direction of the arc-shaped track.

Further, in the present invention,

the mounting grooves and the nail pushing pieces are respectively provided with a plurality of groups, the mounting grooves are arranged in parallel along the width direction of the nail bin body at intervals, and the nail pushing pieces and the mounting grooves are correspondingly mounted;

the same group the mounting groove includes a plurality ofly the mounting groove, and a plurality of the mounting groove is followed the orbital circumference interval of arc sets up.

Further, in the present invention,

the cutting assembly comprises a cutter head and a cutter handle, one end of the cutter head is abutted to the nail pushing piece, and the other end of the cutter head is connected with the cutter handle.

Further, in the present invention,

the cutter head comprises a cutter holder and a cutting edge, one end of the cutter holder is connected with the cutter handle, and the other end of the cutter holder is connected with the cutting edge;

the tool apron is abutted against the side wall of the nail pushing piece, and the cutting edge is positioned above the nail pushing piece.

Further, in the present invention,

the cutting edge of the cutting edge and the cutting direction of the cutting assembly form an inclined acute angle.

Further, in the present invention,

the tool bit is fixedly connected with the tool shank.

Further, in the present invention,

the pushing piece is provided with a first guide surface, and the first guide surface is inclined upwards along the cutting direction of the cutting assembly.

Further, in the present invention,

and the nail pushing piece is provided with a second guide surface corresponding to the first guide surface.

In a second aspect, the present invention provides an arc stapler comprising a cartridge mechanism as described in any of the above.

By combining the technical scheme, the technical effect analysis which can be realized by the utility model is as follows;

the utility model provides a nail bin mechanism which comprises a nail bin body, a nail pushing piece, a cutting assembly and a pushing piece; the nail bin body is provided with a mounting groove and an arc-shaped rail, the nail pushing piece is mounted in the mounting groove, the pushing piece is mounted on the arc-shaped rail and is in sliding fit with the arc-shaped rail, and the cross sections of the side walls of the arc-shaped rail are all arc-shaped; one end of the pushing piece is connected with the cutting assembly, and the other end of the pushing piece is connected with the nail pushing piece; when the pushing piece moves along the circumferential direction of the arc-shaped track, the nail pushing piece pushes the anastomosis nail to be stapled on the affected part under the action of the pushing piece. The nail bin mechanism is applied to an arc-shaped anastomat and used for suturing and cutting an affected part. When the nail bin mechanism is used, an operator pushes the cutting assembly, and the cutting assembly is connected with the pushing piece, so that the pushing piece slides along the circumferential direction of the arc-shaped track under the driving of the cutting assembly, the upper surface pushes the nail pushing piece contacted with the pushing piece in the sliding process, and the nail pushing piece pushes the anastomotic nails to be stapled on an affected part. Because what with impeller sliding fit is that the lateral wall cross-section is curved track, then cutting assembly has the arc and cuts the orbit, and the cutting orbit can agree with more with the focus shape, reduces the cutting number of times of focus, improves cutting efficiency. In addition, the cutting assembly pushes the pushing piece to move, the pushing piece pushes the staple pushing piece to move, the staple pushing piece firstly pushes out the anastomosis staple to suture an affected part, the cutting assembly cuts the anastomosis staple, the suture is firstly performed, and then the cutting is performed, so that the risk of bleeding of tissues is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded schematic view of a nail bin mechanism provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a nail bin body in the nail bin mechanism provided by the embodiment of the present invention;

fig. 3 is a first schematic structural view of a cutting assembly in the nail cartridge mechanism according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram ii of a cutting assembly in the nail cartridge mechanism provided in the embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic structural view of a pusher in the staple cartridge mechanism according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a nail pushing member in the nail bin mechanism according to the embodiment of the present invention.

Icon:

100-a staple cartridge body; 110-a mounting groove; 120-arc track; 130-a first side wall; 140-a second side wall; 200-a nail pushing piece; 300-a cutting assembly; 310-a cutter head; 311-tool post; 312-a blade edge; 313-card slot; 320-a knife handle; 321-a positioning block; 330-a distal end; 340-a proximal end; 400-a pusher; 410-first guide surface.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as 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 invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Example one

The anastomat is a medical instrument frequently used when a surgical operation is carried out on physiological tissues such as intestinal tracts and the like, and the anastomat is equipment used in medicine to replace the traditional manual suture. The existing anastomat adopts a linear cutting mode or an annular cutting mode, when a focus with an irregular shape is encountered, the focus is difficult to completely cut off at one time, the focus can be completely cut off only by cutting for many times, and the problem of low efficiency exists.

In view of this, the staple cartridge mechanism provided by the embodiment of the present invention includes a staple cartridge body 100, a staple pusher 200, a cutting assembly 300 and a pusher 400; the nail box body 100 is provided with a mounting groove 110 and an arc-shaped rail 120, the nail pushing piece 200 is mounted in the mounting groove 110, the pushing piece 400 is mounted on the arc-shaped rail 120 and is in sliding fit with the arc-shaped rail 120, and the cross sections of the side walls of the arc-shaped rail 120 are both arc-shaped; one end of the pushing piece 400 is connected with the cutting assembly 300, and the other end is connected with the nail pushing piece 200; when the pushing member 400 moves along the circumferential direction of the arc-shaped rail 120, the staple pushing member 200 pushes staples to be stapled on the affected part under the action of the pushing member 400. The nail bin mechanism is applied to an arc-shaped anastomat and used for suturing and cutting an affected part. When the cartridge mechanism is used, an operator pushes the cutting assembly 300, and because the cutting assembly 300 is connected with the pushing piece 400, the pushing piece 400 slides along the circumferential direction of the arc-shaped track 120 under the driving of the cutting assembly 300, the upper surface pushes the nail pushing piece 200 contacted with the pushing piece 200 in the sliding process, and the nail pushing piece 200 pushes staples to be stapled on an affected part. Because the pushing member 400 is slidably engaged with the rail having an arc-shaped sidewall section, the cutting assembly 300 has an arc-shaped cutting track, which can be more adapted to the shape of the lesion, thereby reducing the cutting frequency of the lesion and improving the cutting efficiency. In addition, because the cutting assembly 300 pushes the pushing piece 400 to move, and the pushing piece 400 pushes the nail pushing piece 200 to move, the nail pushing piece 200 firstly pushes out the anastomosis nails to suture the affected part, and the cutting assembly 300 then cuts the anastomosis nails, so that the surgical stapler can suture the affected part firstly and then cut the affected part, and the risk of bleeding of tissues is reduced.

The shape and structure of the cartridge mechanism are explained in detail below:

in an alternative aspect of the present invention, the cartridge body 100 includes a first sidewall 130 and a second sidewall 140 opposite to each other, and the curved track 120 is located between the first sidewall 130 and the second sidewall 140; the cross sections of the first and second sidewalls 130 and 140 are both provided in an arc shape, and both have the same direction as the recess of the arc rail 120.

Specifically, referring to fig. 1 and 2, the cartridge body 100 is elongated, and the cross sections of the first side wall 130 and the second side wall 140 arranged along the length direction are arc-shaped and are the same as the concave direction of the arc-shaped rail 120.

The cross sections of the first side wall 130 and the second side wall 140 of the nail bin body 100 are both set to be arc-shaped with the same direction as the concave direction of the arc-shaped rail 120, compared with the cross sections set to be rectangular, the size of the nail bin body 100 is reduced, the first side wall 130 and the second side wall 140 can be better contacted with human tissues, and the situation that the human tissues cannot be fully attached when cutting and suturing are carried out, and the partial part of a patient is remained to a certain extent is avoided.

In the alternative of the embodiment of the present invention, the mounting grooves 110 and the nail-pushing members 200 are provided with a plurality of sets, the plurality of sets of mounting grooves 110 are arranged in parallel along the width direction of the nail bin body 100 at intervals, and the plurality of sets of nail-pushing members 200 are correspondingly mounted with the plurality of sets of mounting grooves 110; the same set of mounting grooves 110 includes a plurality of mounting grooves 110, and the plurality of mounting grooves 110 are arranged at intervals along the circumference of the arc-shaped rail 120.

Specifically, the cross-section of the mounting groove 110 is a rectangle with rounded corners at both sides, and the length direction is arranged along the circumferential direction of the arc-shaped rail 120. In this embodiment, the mounting groove 110 and the nail pushing member 200 are provided with three sets, one set is provided on the left side of the arc-shaped rail 120, and the other two sets are provided on the right side of the arc-shaped rail 120. The detailed structure of the nail-pushing member 200 is shown in fig. 7.

Because the concave directions of the arc-shaped rail 120, the first side wall 130 and the second side wall 140 are the same, when an affected part is sutured, the first side wall 130 is attached to the human tissue, and the sliding path of the pushing member 400 along the arc-shaped rail 120 is consistent with the radian of the first side wall 130, that is, the nail discharging paths of the plurality of mounting grooves 110 in the same group are consistent with the radian of the first side wall 130, so that the anastomat can be more fully attached to the human tissue, thereby improving the suturing effect. When the pushing piece 400 slides along the arc-shaped track 120, the cutting assembly 300 simultaneously slides in the arc-shaped track 120, namely, staples pushed out by the staple pushing piece 200 are sutured on the affected part, and redundant tissues of the affected part are cut off by the cutting assembly 300. The mounting grooves 110 and the staple pushing part 200 are provided with three groups, so that the side close to the second side wall 140 is provided with double rows of staples, the side close to the first side wall 130 is provided with a single row of staples for retaining the human tissue, and the side close to the human tissue is provided with a single row of staples for excising the human tissue.

In the alternative of the embodiment of the present invention, the cutting assembly 300 includes a tool bit 310 and a tool shank 320, one end of the tool bit 310 abuts against the nail pushing member 200, and the other end is connected with the tool shank 320.

Specifically, referring to fig. 3-5, cutting assembly 300 includes a cutting head 310 and a plurality of bendable blades 320, distal ends 330 of the plurality of blades 320 being simultaneously coupled to cutting head 310, and proximal ends 340 of the plurality of blades 320 being movable relative to each other. In this embodiment, all the tool shanks 320 are sheet-shaped, and two adjacent tool shanks 320 are attached to each other. Through the laminating stack setting of a plurality of handle of a knife 320, both guaranteed intensity, also do benefit to the anastomat and keep the toughness of handle of a knife 320 when doing the arc cutting. It should be noted that during use of the stapler cartridge mechanism, a front end portion of cutting assembly 300 (in the relative position of FIG. 3, specifically the left end of cutting assembly 300) is adapted to extend into the body, and a rear end portion of cutting assembly 300 (in the relative position of FIG. 3, specifically the right end of cutting assembly 300) is adapted to remain outside the body for easy manipulation by a health care provider. In this embodiment, the "distal end 330" may be understood to refer to a portion or component of the cutting assembly 300 that is relatively close to the anterior portion of the body, and the "proximal end 340" may be understood to refer to a portion or component of the cutting assembly 300 that is relatively close to the posterior portion of the body. When the "proximal end 340" and the "distal end 330" of which particular part or component is not explicitly indicated, the default refers to either the proximal end 340 or the distal end 330 of the entire cutting assembly 300.

The distal ends 330 of the plurality of tool shanks 320 are simultaneously connected with the tool bit 310, so that the tool bit 310 can be supported and stabilized; meanwhile, the proximal ends 340 of the plurality of tool shanks 320 are not fixedly arranged but are movable with each other, that is, the proximal ends 340 of the plurality of tool shanks 320 can move with each other to generate displacement, and the tool shanks 320 can be bent and deformed, so that the whole cutting assembly 300 has better toughness, and even if the cutting assembly is applied to an arc-shaped cutting anastomat, the pushing resistance of the cutting assembly is not too large, thereby being beneficial to surgical operation, and effectively avoiding the phenomenon that the inner wall of the nail cartridge body 100 is scraped and the tool bit 310 is broken or deformed.

The utility model discloses in the alternative of embodiment, the distal end 330 of a plurality of handle of a knife 320 and tool bit 310 welded fastening are favorable to improving the steadiness of cutting assembly 300 distal end 330 position. Moreover, in other embodiments, it is not excluded that the distal end 330 of the handle 320 and the cutting head 310 are not secured by welding, but by riveting, or that the distal end 330 of the handle 320 and the cutting head 310 are integrally formed. It should be emphasized again that in the present embodiment, the proximal ends 340 of the plurality of tool shanks 320 are not welded together, thereby ensuring that the plurality of tool shanks 320 have a certain degree of freedom in bending, i.e., maintain good toughness.

In the alternative of the embodiment of the present invention, the tool bit 310 includes a tool post 311 and a cutting edge 312, one end of the tool post 311 is connected with the tool handle 320, and the other end is connected with the cutting edge 312; the tool holder 311 abuts against the side wall of the nail pusher 200, and the blade 312 is located above the nail pusher 200.

Specifically, the holder 311 is integrally connected to the blade 312.

The tool apron 311 is abutted against the side wall of the nail pushing piece 200, the cutting edge 312 is positioned above the nail pushing piece 200, when an operator pushes the tool handle 320 to cut, the tool apron 311 pushes the pushing piece 400 to move along the arc-shaped rail 120, and the cutting edge 312 is positioned above the nail pushing piece 200, so that the affected part is cut.

In the alternative of the embodiment of the present invention, the cutting edge of the cutting edge 312 and the cutting direction of the cutting assembly 300 are an oblique acute angle α.

Specifically, the angle of the oblique acute angle α may be set to 50 °, 75 °, 82 °, or the like.

By setting the acute oblique angle to the above range, the cutting of the cutting head 310 into the tissue is facilitated.

In the alternative of the embodiment of the present invention, the tool bit 310 is fixedly connected to the tool shank 320.

Specifically, in this embodiment, the proximal end 340 of the cutting head 310 is provided with a locking groove 313, the distal end 330 of the handle 320 is provided with a positioning block 321 for matching and locking with the locking groove 313, and the positioning block 321 is locked in the locking groove 313. Through the arrangement of the clamping groove 313 and the positioning block 321, the tool bit 310 and the tool shank 320 can be pre-fixed, for example, the positioning block 321 is clamped into the clamping groove 313 to be pre-fixed, and then welding is performed, so that a welding position is formed at the positions of the clamping groove 313 and the positioning block 321. It should be noted that the locking relationship between the positioning block 321 and the locking slot 313 may be an interference fit, a clearance fit or a transition fit, and is preferably an interference fit. By adopting interference fit, the tool shank 320 is not easy to fall off from the joint with the tool bit 310, and subsequent welding and fixing are facilitated. When the clearance fit is adopted, the positioning block 321 can be fixed in the clamping groove 313 in an adhesion mode after being clamped in the clamping groove.

In an alternative aspect of the present embodiment, the pusher 400 is provided with a first guide surface 410, and the first guide surface 410 is inclined upward in the cutting direction of the cutting assembly 300.

Specifically, referring to fig. 6, the pushing member 400 is provided with first guide surfaces 410 on both sides, and the two first guide surfaces 410 are both provided as inclined surfaces, so that during the sliding of the pushing member 400 along the arc-shaped rail 120, the two first guide surfaces 410 are respectively in contact with different sets of nail-pushing members 200.

Because the first guide surface 410 is arranged as an inclined surface, the pushing member 400 can push the nail pushing member 200 more conveniently and more easily.

In an alternative aspect of the present invention, the ejector pin 200 is provided with a second guide surface corresponding to the first guide surface 410.

Specifically, the second guide surface is provided as an inclined surface, and the inclined direction is opposite to that of the first guide surface 410.

When the anastomat is used, the nail pushing piece 200 is pushed outwards more conveniently and more labor-saving, the using effect is ensured, and meanwhile, the operation difficulty is further reduced.

Example two

The embodiment of the utility model provides an arc anastomat, the nail storehouse mechanism that has mentioned in embodiment one has been included, consequently, has also possessed all beneficial effects in embodiment one, no longer has repeated here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A staple cartridge mechanism, comprising: the nail box comprises a nail box body (100), a nail pushing piece (200), a cutting assembly (300) and a pushing piece (400);

the nail bin body (100) is provided with a mounting groove (110) and an arc-shaped rail (120), the nail pushing piece (200) is mounted in the mounting groove (110), the pushing piece (400) is mounted on the arc-shaped rail (120) and is in sliding fit with the arc-shaped rail (120), and the cross sections of the side walls of the arc-shaped rail (120) are both arc-shaped;

one end of the pushing piece (400) is connected with the cutting assembly (300), and the other end of the pushing piece is connected with the nail pushing piece (200);

when the pushing piece (400) moves along the circumferential direction of the arc-shaped track (120), the staple pushing piece (200) pushes staples to be stapled on an affected part under the action of the pushing piece (400).

2. The staple cartridge mechanism of claim 1, wherein said staple cartridge body (100) comprises first and second opposing side walls (130, 140), said arcuate rail (120) being located between said first and second side walls (130, 140);

the cross sections of the first side wall (130) and the second side wall (140) are both arc-shaped and are both in the same direction as the concave direction of the arc-shaped track (120).

3. The nail bin mechanism according to claim 1, characterized in that a plurality of groups of mounting grooves (110) and nail pushing pieces (200) are arranged, the plurality of groups of mounting grooves (110) are arranged in parallel at intervals along the width direction of the nail bin body (100), and the plurality of groups of nail pushing pieces (200) are correspondingly arranged with the plurality of groups of mounting grooves (110);

the same group of the mounting grooves (110) comprise a plurality of the mounting grooves (110), and the mounting grooves (110) are arranged along the circumferential interval of the arc-shaped track (120).

4. The staple cartridge mechanism according to any one of claims 1 to 3, characterized in that said cutting assembly (300) comprises a cutting head (310) and a handle (320), said cutting head (310) having one end abutting said ejector pin (200) and the other end connected to said handle (320).

5. The staple cartridge mechanism according to claim 4, characterized in that said knife head (310) comprises a knife holder (311) and a knife edge (312), one end of said knife holder (311) being connected to said knife handle (320) and the other end being connected to said knife edge (312);

the tool apron (311) is abutted against the side wall of the nail pushing piece (200), and the blade (312) is positioned above the nail pushing piece (200).

6. The cartridge mechanism of claim 5 wherein said cutting edge of said blade (312) is at an acute oblique angle to the cutting direction of said cutting assembly (300).

7. The staple cartridge mechanism of claim 4, wherein said knife head (310) is fixedly attached to said knife handle (320).

8. The staple cartridge mechanism of claim 1, wherein said pusher (400) is provided with a first guide surface (410), said first guide surface (410) being inclined upwardly in the cutting direction of said cutting assembly (300).

9. The staple cartridge mechanism according to claim 8, characterized in that said staple pusher (200) is provided with a second guide surface in correspondence of said first guide surface (410).

10. An arcuate stapler comprising a cartridge mechanism according to any one of claims 1-9.

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