CN112932622A - Puncture equipment for hepatobiliary department - Google Patents

Abstract

The invention discloses a puncture device for hepatobiliary department, which comprises: fixed establishment, latch mechanism, installation mechanism, guide mechanism and collection mechanism, latch mechanism fixed joint connects fixed establishment's side, guide mechanism passes through installation mechanism fixed mounting be in latch mechanism's inside, it installs to gather mechanism fixed mounting guide mechanism's inside, fixed establishment includes fixing base, first engaging lug, second engaging lug, first connecting band, second connecting band, magic hook face, magic wainscot and three installation cassette. According to the invention, the puncture device can be fixed at the puncture position of a patient, so that the puncture precision is ensured, the damage to the patient during delivery can be effectively avoided, the puncture device is fixed, the hand shake easily caused by long-time holding by medical staff is avoided, and the secondary damage to the patient during puncture can be effectively avoided.

Description

Puncture equipment for hepatobiliary department

Technical Field

The invention relates to the technical field of medical instruments, in particular to a puncture device for hepatobiliary department.

Background

Liver puncture is a biopsy of liver tissue. Liver puncture is very traumatic, which makes many patients not easily accept the puncture, and liver biopsy is not used as routine examination in clinic. However, the accuracy of liver biopsy is over 80%, which is a better examination means at present, and generally, many patients with liver diseases can be diagnosed by medical history inquiry and physical examination, or necessary laboratory and imaging examination. However, some patients cannot be diagnosed clearly, and only by taking a pathological examination through liver biopsy, such as lymphoma, liver cancer, and tuberculosis, the diagnosis can be concluded. Some diseases are difficult to diagnose, and liver biopsy and clinical symptoms are combined to make diagnosis, such as autoimmune hepatitis, chronic hepatitis, primary biliary cirrhosis and the like.

At present, liver puncture operation mainly utilizes puncture equipment to carry out liver tissue live body collection, but traditional puncture equipment does not have fixed function, needs the manual draw gear that progressively sends into of doctor when inserting the human body in, the deviation appears easily like this and leads to the patient to receive bigger damage, when inserting the absorption simultaneously, needs medical personnel to grip all the time, and is careless slightly, will cause extra damage to the patient, consequently has great potential safety hazard.

Disclosure of Invention

The technical task of the invention is to solve the above defects, and provide a puncture device for hepatobiliary department, which can be fixed at the puncture position of a patient, thereby ensuring the puncture precision, effectively avoiding the damage to the patient when the puncture device is delivered, and fixing the puncture device, thereby avoiding the hand shake easily caused by the long-time holding of medical personnel, and effectively avoiding the secondary damage to the patient when the puncture device is used for puncturing, so as to solve the problems.

The technical scheme of the invention is realized as follows:

a hepatobiliary puncture device comprising: the clamping mechanism is fixedly clamped on the side surface of the fixing mechanism, the guide mechanism is fixedly installed in the clamping mechanism through the installation mechanism, and the acquisition mechanism is fixedly installed in the guide mechanism;

the fixing mechanism comprises a fixed seat, a first connecting lug, a second connecting lug, a first connecting belt, a second connecting belt, a magic hook surface, a magic veneer and three mounting clamping seats, the first connecting lug is fixedly connected with one side of the fixed seat, the second connecting lug is fixedly connected with the other side of the fixed seat, the first connecting belt is fixedly connected with one side of the first connecting lug, which is far away from the fixed seat, the second connecting belt is fixedly connected with one side of the second connecting lug, which is far away from the fixed seat, the magic hook surface is sewed at the end part of the first connecting belt, the magic tape surface is sewed at the end part of the second connecting belt and corresponds to the position of the magic hook surface, the center of the fixed seat is provided with a through hole, and the three mounting clamping seats are fixedly connected to the edge of the through hole of the fixed seat at equal intervals and are arranged by taking the through hole as an axis;

the clamping mechanism comprises a limiting cylinder, three mounting buckles matched with the mounting clamping seats and mounting chutes, the limiting cylinder is fixedly buckled on the three mounting clamping seats through the three mounting buckles arranged at equal intervals, and the mounting chutes are formed above the limiting cylinder;

the mounting mechanism comprises a mounting sleeve ring, two mounting slide rods, four mounting blocks and a fixing component, wherein the two mounting slide rods movably penetrate through the mounting sleeve ring and are symmetrically arranged on the upper side and the lower side of the mounting sleeve ring;

the guide mechanism comprises a guide pipe, two connecting rods, a rotating handle, an annular slide rail and two sliders, the guide pipe is arranged inside the limiting barrel in a sliding mode through the fixing assembly, the two connecting rods are symmetrically connected to the side face of the guide pipe, internal threads are formed in the inner wall of the rotating handle, the annular slide rail is arranged on one side, close to the connecting rods, of the rotating handle, and one side, close to the annular slide rail, of the connecting rods is arranged inside the annular slide rail in a sliding mode through the sliders;

gather the mechanism and include insert tube, connector, screwed pipe, piston rod and operating handle, the insert tube passes through the connector with the screwed pipe communicates each other, set up on the surface of screwed pipe with internal thread intermeshing's on the twist grip inner wall external screw thread, the piston rod activity sets up on the inner wall of screwed pipe, operating handle fixed connection is in on the piston rod.

Preferably, one side of the fixed seat close to the skin of the patient is fixedly connected with an annular rubber gasket.

Preferably, the first connecting belt and the second connecting belt are both made of elastic bands.

Preferably, one end of the limiting cylinder, which is far away from the mounting buckle, is sleeved with an annular protection ring matched with the limiting cylinder.

Preferably, the fixing assembly comprises a fixing screw and a fixing nut, the fixing screw is fixedly connected to the top of the mounting sleeve ring and is arranged in a sliding mode with the mounting sliding groove, and the fixing nut is in threaded connection with the fixing screw.

Preferably, the top of the fixing screw is fixedly connected with a spherical handle matched with the fixing screw.

Preferably, the insertion end of the guide tube is provided with an arc blunt port.

Preferably, rubber anti-slip beads which are arranged equidistantly are fixedly connected to the edge of the rotating handle.

Preferably, the insertion end of the insertion tube is provided with a bevel.

Preferably, the surface of the operating handle is sleeved with a handle sleeve matched with the operating handle.

Compared with the prior art, the invention has the advantages and positive effects that:

1. according to the invention, the arranged fixing mechanism consists of the fixing seat, the first connecting lug, the second connecting lug, the first connecting belt, the second connecting belt, the magic hook surface, the magic veneer and the three mounting clamping seats, so that the fixing mechanism not only can be used for mounting the clamping mechanism, but also can be used for conveniently fixing the whole device on the affected part of a patient, thereby avoiding errors caused by manual operation of medical staff, and bringing great convenience to the medical staff;

2. according to the invention, the clamping mechanism consists of the limiting cylinder, the three mounting buckles matched with the mounting clamping seats and the mounting sliding chute, and is used for limiting the guiding mechanism, so that the guiding mechanism is more stable when being inserted into an affected part, and secondary wound on a patient is avoided;

3. according to the invention, the arranged installation mechanism consists of the installation lantern ring, two installation sliding rods, four installation blocks and the fixing component, and is not only used for installing the guide mechanism, but also used for fixing the guide mechanism on the installation mechanism while limiting the installation mechanism by arranging the fixing component, so that the deviation in the guide process is avoided;

4. according to the invention, the arranged guide mechanism consists of a guide pipe, two connecting rods, a rotating handle, an annular slide rail and two slide blocks, is used for mounting the acquisition mechanism, and can limit the acquisition mechanism, so that the puncture stability is improved;

5. according to the invention, the arranged acquisition mechanism consists of the insertion tube, the connector, the threaded tube, the piston rod and the operating handle, and the puncture is pushed in a fine threaded mode, so that not only is the stability and the precision of the puncture increased, but also the operation of medical personnel is facilitated, and the practicability of the device is greatly increased.

Drawings

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

FIG. 1 is a schematic structural view of a puncture device for hepatobiliary surgery according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view of a puncture device for hepatobiliary surgery according to an embodiment of the present invention;

FIG. 3 is a schematic view of a mounting structure of a fixing mechanism and a clamping mechanism according to an embodiment of the invention;

FIG. 4 is a schematic structural diagram of a securing mechanism according to an embodiment of the invention;

FIG. 5 is a schematic structural view from another perspective of a securing mechanism according to an embodiment of the invention;

FIG. 6 is a schematic structural diagram of a snapping mechanism, according to an embodiment of the invention;

FIG. 7 is a schematic structural diagram of a mounting mechanism in accordance with an embodiment of the present invention;

FIG. 8 is a schematic view of a portion of the structure of FIG. 7 at A-A;

FIG. 9 is a schematic structural view of a guide mechanism according to an embodiment of the present invention;

FIG. 10 is a schematic structural view from another perspective of a guide mechanism according to an embodiment of the present invention;

FIG. 11 is a schematic view of a portion of the structure of FIG. 10 at B-B;

fig. 12 is a schematic structural view of a collecting mechanism according to an embodiment of the present invention.

In the figure:

1. a fixing mechanism; 101. a fixed seat; 1011. an annular rubber gasket; 102. a first connecting lug; 103. a second engaging lug; 104. a first connecting belt; 105. a second connecting band; 106. magic hook surface; 107. magic veneering; 108. installing a card seat;

2. a clamping mechanism; 201. a limiting cylinder; 2011. an annular guard ring; 202. mounting a buckle; 203. installing a chute;

3. a mounting mechanism 301, a mounting collar; 302. a sliding rod 303, a mounting block 304 and a fixing component are mounted; 3041. fixing the screw rod; 3042. a fixed nut 3043, a spherical grip;

4. a guide mechanism; 401. a guide tube; 4011. an arc blunt port; 402. a connecting rod 403, a rotating handle; 4031. rubber anti-skid beads; 404. an annular slide rail; 405. a slider;

5. a collection mechanism; 501. an insertion tube; 5011. a bevel opening; 502. a connector; 503. threaded tube 504, piston rod; 505. a handle is operated.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

The invention is further described with reference to the following figures and specific examples.

Example 1

As shown in fig. 1, the puncture device for hepatobiliary department according to the embodiment of the present invention includes a fixing mechanism 1, a clamping mechanism 2, an installation mechanism 3, a guiding mechanism 4, and a collecting mechanism 5;

as shown in fig. 1-5, the fixing mechanism 1 includes a fixing base 101, a first connecting lug 102, a second connecting lug 103, a first connecting band 104, a second connecting band 105, a hook-and-loop fastener 106, a hook-and-loop fastener 107, and three mounting sockets 108, the first connecting lug 102 is fixedly connected to one side of the fixing base 101, the second connecting lug 103 is fixedly connected to the other side of the fixing base 101, the first connecting band 104 is fixedly connected to one side of the first connecting lug 102 away from the fixing base 101, the second connecting band 105 is fixedly connected to one side of the second connecting lug 103 away from the fixing base 101, the hook-and-loop fastener 106 is sewn to an end of the first connecting band 104, the hook-and-loop fastener 107 is sewn to an end of the second connecting band 105 and corresponds to a position of the hook-and-loop fastener 106, a through opening is formed at a center of the fixing base 101, the three mounting clamping seats 108 are fixedly connected to the edge of the through hole of the fixed seat 101 at equal intervals, and are arranged by taking the through hole as an axis;

as shown in fig. 1-3 and fig. 6, the clamping mechanism 2 includes a limiting cylinder 201, three mounting fasteners 202 adapted to the mounting fastener seats 108, and a mounting chute 203, wherein the limiting cylinder 201 is fixedly fastened to the three mounting fastener seats 108 through the three mounting fasteners 202 arranged at equal intervals, and the mounting chute 203 is arranged above the limiting cylinder 201;

as shown in fig. 1-2 and fig. 7-8, the mounting mechanism 3 includes a mounting collar 301, two mounting sliding rods 302, four mounting blocks 303 and a fixing assembly 304, the two mounting sliding rods 302 movably penetrate through the mounting collar 301 and are symmetrically disposed on the upper and lower sides of the mounting collar 301, the two mounting blocks 303 located on the same side are respectively and fixedly connected to the two sides of the mounting sliding rods 302, and the fixing assembly 304 is fixedly connected above the mounting collar 301;

as shown in fig. 1-2 and fig. 9-11, the guide mechanism 4 includes a guide tube 401, two connecting rods 402, a rotating handle 403, an annular slide rail 404, and two sliders 405, the guide tube 401 is slidably disposed inside the limiting barrel 201 through the fixing assembly 304, the two connecting rods 402 are symmetrically connected to the side surfaces of the guide tube 401, an inner thread is disposed on the inner wall of the rotating handle 403, the annular slide rail 404 is disposed on one side of the rotating handle 403 close to the connecting rod 402, and one side of the connecting rod 402 close to the annular slide rail 404 is slidably disposed inside the annular slide rail 404 through the sliders 405;

as shown in fig. 1-2 and 12, the collecting mechanism 5 includes an insertion tube 501, a connector 502, a threaded tube 503, a piston rod 504, and an operating handle 505, the insertion tube 501 is communicated with the threaded tube 503 through the connector 502, an external thread engaged with the internal thread on the inner wall of the rotating handle 403 is provided on the outer surface of the threaded tube 503, the piston rod 504 is movably disposed on the inner wall of the threaded tube 503, and the operating handle 505 is fixedly connected to the piston rod 504.

By adopting the technical scheme, the puncture device can be fixed at the puncture part of the patient, so that the puncture precision is ensured, the damage to the patient when the puncture device is delivered can be effectively avoided, the puncture device is fixed, the hand shake easily caused by long-time holding of medical personnel is avoided, and the secondary damage to the patient during puncture can be effectively avoided;

the fixing mechanism 1 comprises a fixing seat 101, a first connecting lug 102, a second connecting lug 103, a first connecting belt 104, a second connecting belt 105, a magic hook surface 106, a magic veneer 107 and three mounting clamping seats 108, and not only can be used for mounting the clamping mechanism 2, but also is convenient for fixing the whole device on the affected part of a patient, so that errors caused by manual operation of medical staff are avoided, and great convenience is brought to the medical staff;

the clamping mechanism 2 is composed of a limiting cylinder 201, three mounting buckles 202 matched with the mounting clamping seat 108 and a mounting chute 203, and is used for limiting the guide mechanism 4, so that the guide mechanism 4 is more stable when being inserted into an affected part, and secondary wound of a patient is avoided;

the mounting mechanism 3 is composed of a mounting collar 301, two mounting slide rods 302, four mounting blocks 303 and a fixing component 304, and is not only used for mounting the guide mechanism 4, but also capable of fixing the guide mechanism 4 on the mounting mechanism 3 while limiting the mounting mechanism 3 by arranging the fixing component 304, thereby avoiding deviation in the guiding process;

the guide mechanism 4 is composed of a guide tube 401, two connecting rods 402, a rotating handle 403, an annular slide rail 404 and two sliders 405, and is used for mounting the acquisition mechanism 5 and limiting the acquisition mechanism 5, so that the puncture stability is improved;

wherein, collection mechanism 5 comprises intubate 501, connector 502, screwed pipe 503, piston rod 504 and operating handle 505, impels the puncture through the mode of meticulous screw thread, has not only increased the stability and the precision of puncture, has made things convenient for medical personnel's operation moreover to greatly increased this device's practicality.

Example 2

As shown in fig. 1-2 and fig. 4-5, the present embodiment is different from embodiment 1 in that a ring-shaped rubber gasket 1011 is fixedly connected to a side of the fixing base 101 close to the skin of the patient, and the first connecting band 104 and the second connecting band 105 are both made of elastic bands.

Through adopting above-mentioned technical scheme, not only under the effect of annular rubber packing ring 1011 for it is more comfortable when patient's affected part is detained to this device, adopts first connecting band 104 and the second connecting band 105 that the elastic band preparation formed moreover, makes this device can the lock joint in the patient of different sizes, thereby greatly increased the practicality of this device.

Example 3

As shown in fig. 1-2 and fig. 6, the present embodiment is different from embodiment 2 in that an end of the limiting cylinder 201 away from the mounting buckle 202 is sleeved with an annular guard ring 2011 adapted thereto.

Through adopting above-mentioned technical scheme, not only increased the pleasing to the eye of this device, adopted curved design moreover, can effectually avoid scratch medical personnel in the use of spacing section of thick bamboo 201 to the practicality has been improved.

Example 4

As shown in fig. 1-2 and 7-8, the present embodiment is different from embodiment 3 in that the fixing assembly 304 includes a fixing screw 3041 and a fixing nut 3042, the fixing screw 3041 is fixedly connected to the top of the mounting collar 301 and is slidably disposed with the mounting chute 203, the fixing nut 3042 is threadedly connected to the fixing screw 3041, and the top of the fixing screw 3041 is fixedly connected to a spherical handle 3043 adapted thereto.

Through adopting above-mentioned technical scheme, not only guaranteed the stability of installation mechanism 3 operation, can slide installation mechanism 3 moreover and fix to after the appointed distance to increased this device whole operation's stability and convenient.

Example 5

As shown in fig. 1 to 2 and fig. 9 to 10, this embodiment is different from embodiment 4 in that an insertion end of the guide tube 401 is provided with an arc-shaped blunt port 4011.

By adopting the technical scheme, when the guide tube 401 is prevented from being inserted into the affected part of the patient, the tissues of the patient are scratched, so that secondary damage in the puncture process is avoided, the normal operation of puncture is ensured, and the practicability of the device is improved.

Example 6

As shown in fig. 1-2 and fig. 9-12, this embodiment is different from embodiment 5 in that rubber anti-slip beads 4031 arranged at equal intervals are fixedly connected to the edge of the rotary handle 403, and a grip sleeve adapted to the surface of the operating handle 505 is sleeved on the surface of the operating handle 505.

By adopting the technical scheme, not only is the operation of the rotating handle 403 by medical personnel convenient, but also the comfort of the medical personnel for holding the operating handle 505 is increased.

Example 7

As shown in fig. 1-2 and fig. 12, this embodiment is different from embodiment 6 in that the insertion end of the insertion tube 501 is provided with a bevel 5011.

By adopting the technical scheme, the insertion tube 501 is smoother when being inserted into the affected part of the patient, thereby providing convenience for medical staff.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In practical application, firstly, the fixing base 101 is buckled on a patient, then the first connecting belt 104 and the second connecting belt 105 are pasted and fixed through magic tapes, the clamping mechanism 2 is buckled and connected on the installation clamping base 108 through the installation buckle 202, so that the puncture device is stabilized, then the fixing nut 3042 is loosened, the fixing screw 3041 can slide on the inner wall of the installation sliding groove 203, the limiting cylinder 201 can slide to the appointed depth of an affected part as required, then the fixing nut 3042 is screwed, so that the clamping mechanism 2 is fixed, the offset generated in the puncture process is avoided, then the rotating handle 403 is rotated, the insertion pipe 501 at the front end of the threaded pipe 503 can be inserted into a part to be punctured under the mutual engagement of the internal thread on the rotating handle 403 and the external thread on the threaded pipe 503, after the distance adjustment is completed, the piston rod 504 is pulled through the operating handle 505, not only can carry out sampling operation on the affected part of the patient.

The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.

Claims (5)

1. A hepatobiliary department uses piercing depth, includes: the device comprises a fixing mechanism (1), a clamping mechanism (2), an installation mechanism (3), a guide mechanism (4) and a collection mechanism (5).

2. The hepatobiliary department puncture device according to claim 1, wherein the clamping mechanism (2) is fixedly clamped on the side surface of the fixing mechanism (1), the guide mechanism (4) is fixedly installed inside the clamping mechanism (2) through the installation mechanism (3), and the collection mechanism (5) is fixedly installed inside the guide mechanism (4);

the fixing mechanism (1) comprises a fixing seat (101), a first connecting lug (102), a second connecting lug (103), a first connecting belt (104), a second connecting belt (105), a magic hook surface (106), a magic tape (107) and three mounting clamping seats (108), wherein the first connecting lug (102) is fixedly connected to one side of the fixing seat (101), the second connecting lug (103) is fixedly connected to the other side of the fixing seat (101), the first connecting belt (104) is fixedly connected to one side, far away from the fixing seat (101), of the first connecting lug (102), the second connecting belt (105) is fixedly connected to one side, far away from the fixing seat (101), of the second connecting lug (103), the magic tape (106) is sewn at the end part of the first connecting belt (104), and the magic tape (107) is sewn at the end part of the second connecting belt (105) and corresponds to the position of the hook surface (106), a through hole is formed in the center of the fixed seat (101), and the three mounting clamping seats (108) are fixedly connected to the edge of the through hole of the fixed seat (101) at equal intervals and are arranged by taking the through hole as an axis;

the clamping mechanism (2) comprises a limiting cylinder (201), three mounting buckles (202) matched with the mounting clamping seats (108) and a mounting sliding groove (203), the limiting cylinder (201) is fixedly clamped on the three mounting clamping seats (108) through the three mounting buckles (202) which are arranged at equal intervals, and the mounting sliding groove (203) is formed above the limiting cylinder (201);

the mounting mechanism (3) comprises a mounting sleeve ring (301), two mounting slide bars (302), four mounting blocks (303) and a fixing component (304), the two mounting slide bars (302) movably penetrate through the mounting sleeve ring (301) and are symmetrically arranged on the upper side and the lower side of the mounting sleeve ring (301), the two mounting blocks (303) positioned on the same side are respectively and fixedly connected to the two sides of the mounting slide bars (302), and the fixing component (304) is fixedly connected above the mounting sleeve ring (301);

the guide mechanism (4) comprises a guide pipe (401), two connecting rods (402), a rotating handle (403), an annular sliding rail (404) and two sliding blocks (405), the guide pipe (401) is arranged inside the limiting barrel (201) in a sliding mode through the fixing assembly (304), the two connecting rods (402) are symmetrically connected to the side face of the guide pipe (401), internal threads are formed in the inner wall of the rotating handle (403), the annular sliding rail (404) is arranged on one side, close to the connecting rods (402), of the rotating handle (403), and one side, close to the annular sliding rail (404), of the connecting rods (402) is arranged inside the annular sliding rail (404) in a sliding mode through the sliding blocks (405);

gather mechanism (5) including intubate (501), connector (502), screwed pipe (503), piston rod (504) and operating handle (505), intubate (501) passes through connector (502) with screwed pipe (503) communicates each other, set up on the surface of screwed pipe (503) with the external screw thread of internal thread intermeshing on twist grip (403) inner wall, piston rod (504) activity sets up on the inner wall of screwed pipe (503), operating handle (505) fixed connection is in on piston rod (504), one side fixedly connected with annular rubber packing ring (1011) that fixing base (101) are close to patient's skin, when the practical application, at first detain fixing base (101) on the patient, then paste fixedly through the magic subsides on first connecting band (104) and the second connecting band (105), the clamping mechanism (2) is buckled on the installation clamping seat (108) through the installation buckle (202), thereby realizing the stability of the puncture device, then the fixing nut (3042) is loosened to ensure that the fixing screw rod (3041) can slide on the inner wall mountain of the mounting chute (203), the limiting cylinder (201) can slide to the specified depth of the affected part as required, then the fixing nut (3042) is screwed down, thereby realizing the fixation of the clamping mechanism (2) and avoiding the deviation in the puncture process, then the rotating handle (403) is rotated, under the mutual engagement of the internal thread on the rotating handle (403) and the external thread on the threaded pipe (503), the inserting pipe (501) at the front end of the threaded pipe (503) can be inserted into the part to be punctured, after the distance adjustment is completed, the affected part of the patient can be sampled only by pulling the piston rod (504) through the operating handle (505).

3. The hepatobiliary department puncture device according to claim 2, wherein the first connecting band (104) and the second connecting band (105) are made of elastic bands.

4. The hepatobiliary department puncture device according to claim 2, wherein an end of the limiting cylinder (201) away from the mounting buckle (202) is sleeved with an annular protection ring (2011) adapted to the limiting cylinder.

5. The hepatobiliary department puncture device according to claim 2, wherein the fixing assembly (304) comprises a fixing screw (3041) and a fixing nut (3042), the fixing screw (3041) is fixedly connected to the top of the mounting collar (301) and slidably arranged with the mounting chute (203), and the fixing nut (3042) is threadedly connected to the fixing screw (3041).

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