CN217472481U - Intravascular flusher with auxiliary structure for cerebral vascular reconstruction - Google Patents

Abstract

The utility model provides a blood vessel flusher is used in blood vessel reconstruction with auxiliary structure, through installation union coupling washing portion, the portion of holding to through hose connection injection portion, when changing injection liquid only need to the injection portion change can, need not change other positions, can not damage the blood vessel because of changing repeatedly. Because the flexible pipe has large mobility and long length of about 10cm, the flushing operation is not required to be completed in an operating space under a microscope. The injection can be freely operated under a microscope without influencing the visual field of the flushing part, so that the main knife can easily and independently complete the operation; the length of the gripping part can be adjusted to adapt to different operating spaces, a fixing pipe with a branch pipe is further installed between the injection part and the connecting pipe, the injection parts can be connected simultaneously to be washed, and the operation efficiency is improved. The washing part is straight tube structure and return bend structure, can wash straight type and curved blood vessel, and the liquid outlet hole has been seted up along circumference to the washing part bottom, and liquid can disperse to jet out and fully wash.

Description

Intravascular flusher with auxiliary structure for cerebral vascular reconstruction

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a blood vessel flusher is used in blood vessel reconstruction with auxiliary structure.

Background

When the bypass operation for reconstructing the cerebral vessels is performed, blood clots in the blood vessels need to be washed after the blood vessels are cut off, so that the blood vessels are prevented from being blocked by thrombus, the reconstructed blood vessels are not communicated, and the operation fails. When the main surgeon performs this part of the irrigation operation, it is difficult to perform the irrigation liquid propelling operation normally while fixing the irrigator in one hand to reconstruct the blood vessel.

And because the fine operation is finished under a microscope, a doctor of a main surgeon must be accurate to ensure the operation quality, on one hand, the needle tube of the flusher needs to be stably connected into the blood vessel at the broken end and fixed, on the other hand, the flushing liquid needs to be normally pushed into the blood vessel for flushing, and the operation space is limited when the blood vessel is flushed in the micro operation, and the flushing efficiency is low.

Disclosure of Invention

According to the technical problem above, the utility model provides a blood vessel flusher is used in blood vessel reconstruction with auxiliary structure, its characterized in that includes holding portion, installation pipe, washing portion, connecting pipe, fixed pipe, the installation pipe is Y type structure, installation pipe lower extreme open position installs washing portion, installation pipe upper end left side open position is fixed with holding portion, installation pipe upper end right side open position is connected with fixed pipe through the connecting pipe, the connecting pipe is the hose, fixed pipe includes bottom tube, branch pipe, end connection has the branch pipe on the bottom tube, the branch pipe has n, and n is 2 or 3, and n the branch pipe is located the bottom tube and forms the bifurcation structure, the bottom tube bottom is connected with the connecting pipe. And an injection part is fixed at the port of the branch pipe.

Further, the inner wall of the bottom end of the installation pipe is provided with a thread structure, the outer wall of the upper end of the washing part is provided with a thread structure, the washing part is installed on the installation pipe through the thread structure, the washing part is of a tubular structure, the bottom end part of the washing part is of an oblique angle structure of a circular shield, the side wall of the bottom end of the washing part is circumferentially provided with y liquid outlet holes; the flushing part is a hose;

the bottom end of the flushing part is of a straight pipe structure or a bent pipe structure.

Further, injection portion is including closing stopper, syringe needle, syringe, closed stopper is fixed in branch pipe port department, syringe needle is installed to the syringe tip, syringe needle passes the branch connection of closed stopper and fixed pipe.

Further, the injection part is an injector.

Further, the closure plug is a heparin cap.

Further, the grip is a syringe, and the diameter of the grip is about 0.5 cm; and the installed part is installed to the upper end of installation pipe, the installed part is dull polish rubber material.

Furthermore, the gripping part comprises a fixed rod, a loop bar and a fixed ring buckle, the end part of the fixed rod is provided with the loop bar through the fixed ring buckle, the fixed rod is connected with the loop bar to form a telescopic structure, and the fixed rod and the loop bar are both made of frosted plastic materials or matte titanium alloy materials; the diameter of the loop bar and the fixed bar is about 0.5 cm.

Further, the fixing ring buckle is arranged at the lower end of the fixing rod, the loop bar is sleeved in the fixing ring buckle, and the loop bar is arranged at the lower end of the fixing rod; the fixing ring buckle is transversely provided with a fixing hole, the fixing hole is connected with a tightening screw, and the loop bar penetrates through the fixing hole of the fixing ring buckle through the tightening screw and is gradually screwed down to be connected with the fixing rod; the sleeve rod is provided with scale marks; the side wall of the fixed rod is provided with textures; the fixing rod is of a straight rod structure or a bent rod structure.

Furthermore, the loop bar is arranged at the lower end of the fixed rod, and the fixed ring buckle is sleeved outside the loop bar; the outer wall of the fixed rod is provided with a threaded structure, the inner wall of the upper end of the sleeve rod is provided with a threaded structure, and the sleeve rod is connected with the fixed rod through the threaded structure; the upper end of the loop bar is longitudinally provided with a sub-groove, the fixed ring buckle is arranged at the sub-groove position, a fixed groove is formed in the fixed ring buckle, the axial section of the fixed groove is in a wedge-shaped structure, the inner wall of the fixed groove is provided with a thread structure, the outer wall of the sub-groove position at the upper end of the loop bar is provided with a thread structure, and the fixed ring buckle is connected with the loop bar through the thread structure; the thread structure of the outer wall of the groove dividing position of the sleeve rod is opposite to the thread structure of the inner wall of the sleeve rod; the fixed rod is provided with scale marks, and the loop bar is of frosted or matte texture; the upper end part of the fixed rod is provided with anti-falling textures.

The flushing part can be divided into 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm and the like according to different inner diameters of blood vessels. The flushing part is connected with the bottom end of the mounting pipe in a threaded structure or a clamping sleeve mode;

the length of the connecting pipe is about 10-15 cm.

The utility model has the advantages that: in order to ensure the operation efficiency, the intravascular flusher with the auxiliary structure for the bypass is provided, and a doctor can complete the flushing operation by one person; an assistant can also assist the operation, and the use is convenient. According to the needs of different operations, different flushing liquids are sometimes needed, and the existing flushing operation is carried out through a syringe, so the syringe needs to be replaced in a matched manner during replacement, and the frequent replacement of the flusher in the operation wastes operation time and can damage blood vessels. The application provides an intravascular flusher with an auxiliary structure for bridging, which can complete the flushing of various injection liquids without frequent replacement, saves the operation time and is not easy to damage blood vessels.

The utility model is designed to connect the flushing part, the holding part and the injection part through the installation tube of the Y-shaped structure, the flushing part is a hose and is not easy to stab the blood vessel, the injection part is connected with the installation tube through the connecting tube of the hose, only one hand of the main knife is needed to control the holding part to carry the flushing part to be accurately placed in the blood vessel, the flushing part of the hose is kept to be fixed in the blood vessel without dropping out the blood vessel, the flushing liquid in the injection part connected by the connecting tube of the hose is injected by the other hand of the main knife to complete the blood vessel flushing, the position of the injection part is only needed to be changed when the injection liquid is changed, the flushing hose is not needed to be pulled out and changed from the broken end blood vessel, the blood vessel damage is avoided, the hose has large mobility, no special requirement on the direction, only the force control of the holding liquid is needed, the flushing of the flushing part is not easy to be influenced, the length of the flushing part can be adjusted, and the operation distance can be prolonged, the device is suitable for different operating spaces, can be freely operated under a microscope, can ensure smooth flushing even if the injection operation is unstable as long as the flushing part is not separated from blood vessels during injection, further ensures that the main knife can easily and independently complete the operation, and is convenient to use; still install the fixed pipe including n branch pipes between injection portion and the connecting pipe, can connect a plurality of injection portions that are equipped with different washing liquid simultaneously and wash, and then can satisfy the required different washing liquid of the state of an illness of different, also can accelerate operation efficiency simultaneously.

The diameter of the gripping part is about 0.5cm, the gripping part is in a form formed by connecting a loop bar, a fixed rod and a fixed ring buckle, the diameter of the loop bar and the diameter of the fixed rod are about 0.5cm, the diameters of the loop bar and the fixed rod are thin, the visual field of other operations is not influenced, and the fixed rod and the loop bar are both made of frosted plastic materials or matt titanium alloy materials and can be used after repeated disinfection; the grasping part is provided with two forms of a fixed buckle which is arranged at the lower end of the fixed rod and is a bent rod or a straight rod, and three different structures of the fixed buckle which is sleeved outside the loop bar, the proper grasping part can be selected according to the needs of the operation, and the device is suitable for the intravascular flushing without the requirements of the operation depth and angle.

The utility model discloses a washing portion places in the installation intraductal setting, can change according to the actual use demand, and then can conveniently wash the blood vessel of different diameters, and washing portion has straight tube structure and return bend structure, and the washing portion of return bend structure can wash curved blood vessel, has solved the inconvenient problem of washing curved blood vessel of current straight tube type needle tubing, and the bottom of washing portion has seted up liquid outlet along circumference simultaneously, and the medicine can be sent out from liquid outlet, can fully wash away the washing to the blood vessel lateral wall, and the cleaning performance is good;

in addition, the utility model can be used as a holding part, when the syringe needle is not arranged at the front end of the syringe, the syringe needle can be directly used for integral extension operation by using the piston structure, the mounting part is made of rubber and is not provided with a hole, so that the condition that gas in the syringe is pushed into the blood vessel does not exist, and the syringe needle can not actively retract after being stretched in length, thereby being convenient to use and low in price;

the utility model discloses simple structure can be according to in-service use demand independent assortment, components of a whole that can function independently, and the practicality is strong.

Drawings

FIG. 1 is a schematic view of the structure of the syringe as the grip portion and the straight tube as the flushing portion;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the structure of the grasping portion of the present invention formed by connecting a loop bar, a fixing rod, and a fixing loop, wherein the fixing loop is sleeved outside the loop bar;

FIG. 4 is a schematic view of a top view of the grip portion of the present invention formed by connecting a loop bar, a fixing rod, and a fixing buckle, wherein the fixing buckle is sleeved outside the loop bar;

fig. 5 is a schematic structural view of the gripping part of the present invention formed by connecting a loop bar, a fixed bar and a fixed buckle, wherein the fixed buckle is installed at the lower end of the fixed bar, and the fixed bar is a bent bar;

fig. 6 is a schematic structural view of the gripping part of the present invention formed by connecting a loop bar, a fixing rod and a fixing buckle, wherein the fixing buckle is installed at the lower end of the fixing rod, and the fixing rod is a straight rod;

fig. 7 is a schematic structural view of the syringe and the flushing part of the present invention.

As shown in the figure: 1. installing a pipe; 2-1, mounting parts; 2-2, a washing part; 2-2-2, liquid outlet holes; 3. a grip portion; 3-1, fixing a rod; 3-1-1, scale mark; 3-2, sleeving a rod; 3-2-1, dividing the groove; 3-3, fixing a ring buckle; 3-3-1, tightly pushing the screw rod; 4. a connecting pipe; 5. a fixed tube; 5-1, a bottom tube; 5-2, branch pipes; 6. closing the plug; 7-1, an injection needle; 7. and (4) a syringe.

Detailed Description

Example 1

The utility model provides a blood vessel is rebuild and is used intravascular flusher with auxiliary structure, its characterized in that includes holding portion 3, installation pipe 1, washing portion 2-2, connecting pipe 4, fixed pipe 5, installation pipe 1 is Y type structure, 1 lower extreme open position of installation pipe installs washing portion 2-2, 1 upper end left side open position of installation pipe is fixed with holding portion 3, 1 upper end right side open position of installation pipe is connected with fixed pipe 5 through connecting pipe 4, connecting pipe 4 is the hose, fixed pipe 5 includes bottom tube 5-1, branch pipe 5-2, 5-1 upper end of bottom tube is connected with branch pipe 5-2, branch pipe 5-2 has n, n branch pipe 5-2 is located on bottom tube 5-1 and forms the bifurcation structure, bottom tube 5-1 bottom is connected with connecting pipe 4.

Further, the inner wall of the bottom end of the installation pipe 1 is provided with a thread structure, the outer wall of the upper end of the washing part 2-2 is provided with a thread structure, the washing part 2-2 is installed on the installation pipe 1 through the thread structure, the washing part 2-2 is of a tubular structure, the bottom end part of the washing part 2-2 is of an oblique angle structure of a circular shield, the side wall of the bottom end of the washing part 2-2 is circumferentially provided with liquid outlet holes 2-2-2, and y liquid outlet holes 2-2-2 are arranged; the washing part 2-2 is a hose; the bottom end of the flushing part 2-2 is of a straight pipe structure or a bent pipe structure.

Further, an injection part is fixed at the port of the branch pipe 5-2.

Further, the injection part comprises a closing plug 6, an injection needle 7-1 and an injector 7, the closing plug 6 is fixed at the port of the branch pipe 5-2, the end part of the injector 7 is provided with the injection needle 7-1, and the injection needle 7-1 penetrates through the closing plug 6 to be connected with the branch pipe 5-2 of the fixed pipe 5.

Further, the injection part is a general syringe 7.

Further, the closure plug 6 is a heparin cap.

Further, the grip 3 is a syringe 7, and a mounting member 2-1 is mounted on the upper end of the mounting tube 1, the mounting member 2-1 is made of a ground rubber material, and the diameter of the grip 3 is about 0.5 cm.

Further, the gripping part 3 comprises a fixing rod 3-1, a loop rod 3-2 and a fixing buckle 3-3, the end part of the fixing rod 3-1 is provided with the loop rod 3-2 through the fixing buckle 3-3, the fixing rod 3-1 is connected with the loop rod 3-2 to form a telescopic structure, the fixing rod 3-1 and the loop rod 3-2 are both made of a frosted plastic material or a matte titanium alloy material, and the diameters of the loop rod 3-2 and the fixing rod 3-1 are about 0.5 cm.

Further, a fixed ring buckle 3-3 is arranged at the lower end of the fixed rod 3-1, a loop bar 3-2 is sleeved in the fixed ring buckle 3-3, and a loop bar 3-2 is arranged at the lower end of the fixed rod 3-1; a fixing hole is transversely formed in the fixing ring buckle 3-3, a jacking screw rod 3-3-1 is connected to the fixing hole, and the loop bar 3-2 penetrates through the fixing hole of the fixing ring buckle 3-3 through the jacking screw rod 3-3-1 and is gradually screwed down to be connected with the fixing rod 3-1; the loop bar 3-2 is provided with scale marks 3-1-1; the side wall of the fixed rod 3-1 is provided with textures; the fixed rod 3-1 is a straight rod structure or a bent rod structure.

Further, a loop bar 3-2 is arranged at the lower end of the fixed bar 3-1, and a fixed ring buckle 3-3 is sleeved outside the loop bar 3-2; the outer wall of the fixed rod 3-1 is provided with a thread structure, the inner wall of the upper end of the loop rod 3-2 is provided with a thread structure, and the loop rod 3-2 is connected with the fixed rod 3-1 through the thread structure; the upper end of the loop bar 3-2 is longitudinally provided with a sub-groove 3-2-1, a fixed ring buckle 3-3 is arranged at the position of the sub-groove 3-2-1, a fixed groove is formed in the fixed ring buckle 3-3, the axial section of the fixed groove is in a wedge-shaped structure, the inner wall of the fixed groove is provided with a thread structure, the outer wall of the position of the sub-groove 3-2-1 at the upper end of the loop bar 3-2 is provided with a thread structure, and the fixed ring buckle 3-3 is connected with the loop bar 3-2 through the thread structure; the thread structure of the outer wall of the sub-groove 3-2-1 position of the loop bar 3-2 is opposite to the thread structure of the inner wall of the loop bar 3-2; the fixed rod 3-1 is provided with scale lines 3-1-1, and the loop bar 3-2 is of frosted or matte texture; the upper end part of the fixed rod 3-1 is provided with anti-drop grains.

The flushing part 2-2 can be divided into 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm and the like according to different inner diameters of blood vessels. The flushing part 2-2 is connected with the bottom end of the mounting pipe 1 in a threaded structure or a clamping sleeve mode; the length of the connecting tube 4 is about 10-15 cm.

Example 2

When the utility model is used, the flushing parts 2-2 with different types are taken according to different internal diameters of blood vessels, the flushing parts 2-2 with different shapes are taken according to different shapes of blood vessels, an operator firstly passes the upper end part of the flushing part 2-2 with required diameter or shape through the lower port of the installation pipe 1 and installs the flushing part on the installation pipe 1 through a thread structure, then the length of the holding part 3 is adjusted according to the requirement, the holding part 3 with the adjusted length is fixed at the left port position at the upper end of the installation pipe 1, at the moment, the holding part 3 is fixedly connected with the installation pipe 1, and the flushing part 2-2 can flush the bent blood vessels when being bent;

then, directly mounting the end of the injector 7 without the injection needle 7-1 on the branch pipe 5-2 to realize medicine delivery, and mounting a closing plug 6 on the port of the rest branch pipe 5-2 to realize pipeline closing when only one medicine is needed; the injection needle 7-1 is arranged on the injector 7, the injection liquid is carried by the injector 7 to penetrate into the closing plug 6 to realize medicine delivery, or the closing plug 6 which is a heparin cap is arranged on the port of the branch pipe 5-2, and the injection needle 7-1 is carried by the injector 7 to penetrate into the heparin cap to realize medicine delivery; then the handheld holding part 3 carries the washing part 2-2 to be delivered into a required puncture position, and the washing part 2-2 punctures the broken end blood vessel through the end part;

when the washing is carried out, the piston rod of the injector 7 is pushed, the medicine body is pushed downwards and flows out from the central flow channel of the washing part 2-2 through the connecting pipe 4, and meanwhile, the medicine body is emitted from the liquid outlet hole 2-2-2, so that the side wall of the blood vessel can be fully washed and cleaned, and the cleaning effect is good.

Example 3

When the shallow surface is bridged and the depth is not required by scales, the injector 7 can be taken as the gripping part 3, and the piston rod of the injector 7 is directly pulled to adjust the length to the required length, so that the adjustment is convenient; and the required injection can be sucked in the holding part 3 of the injector 7, the injection needle 7-1 is arranged at the end of the holding part, the installation part 2-1 is punctured by the injection needle 7-1 to form a through hole communicated with the flow channel of the flushing part 2-2, the injection can be injected into the blood vessel to be flushed by pushing the piston rod of the holding part 3 of the injector 7, and the injection can be matched with the injector 7 at the branch pipe 5-2 of the fixed pipe 5 to inject various required liquids simultaneously, so that the cleaning speed can be accelerated.

Example 4

When the grasping part 3 is formed by connecting a loop bar 3-2, a fixed bar 3-1 and a fixed ring buckle 3-3, and the fixed ring buckle 3-3 is sleeved outside the loop bar 3-2, the length of the grasping part 3 can be adjusted by rotating the fixed bar 3-1 and pushing the fixed bar 3-2 into the loop bar 3-2, and then the fixed ring buckle 3-3 rotates reversely relative to the rotating direction of the fixed bar 3-1, so that the positions of the sub-grooves 3-2-1 of the loop bar 3-2 can be closed and connected and fixed with the fixed bar 3-1, the adjustment is convenient, and the scale mark 3-1-1 can display the length of the current grasping part 3.

Example 5

When the grasping part 3 is formed by connecting a loop bar 3-2, a fixed bar 3-1 and a fixed ring buckle 3-3, and the fixed ring buckle 3-3 is arranged at the lower end of the fixed bar 3-1, the jacking screw 3-3-1 is unscrewed from a fixed hole of the fixed ring buckle 3-3, the loop bar 3-2 can move up and down freely, then the length of the grasping part 3 can be adjusted by adjusting the length of the loop bar 3-2 below the fixed ring buckle 3-3, then the jacking screw 3-3-1 is screwed from the fixed hole of the fixed ring buckle 3-3 to fix the length, and the scale mark 3-1-1 can display the length of the current grasping part 3.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. An intravascular flusher with an auxiliary structure for cerebral vascular reconstruction is characterized by comprising a holding part, an installation pipe, a flushing part, a connecting pipe and a fixing pipe, wherein the installation pipe is of a Y-shaped structure, the flushing part is installed at the opening position of the lower end of the installation pipe, the holding part is fixed at the opening position of the left side of the upper end of the installation pipe, the opening position of the right side of the upper end of the installation pipe is connected with the fixing pipe through the connecting pipe, the connecting pipe is a hose, the fixing pipe comprises a bottom pipe and branch pipes, the upper end of the bottom pipe is connected with the branch pipes, the branch pipes are n, the n branch pipes are positioned on the bottom pipe and form a branched structure, and the bottom end of the bottom pipe is connected with the connecting pipe;

and an injection part is fixed at the port of the branch pipe.

2. The intravascular flusher with the auxiliary structure for reconstructing the cerebral vessels is characterized in that the inner wall of the bottom end of the mounting pipe is provided with a thread structure, the outer wall of the upper end of the flushing part is provided with a thread structure, the flushing part is mounted on the mounting pipe through the thread structure, the flushing part is of a tubular structure, and the flushing part is of a hose; the bottom end part of the washing part is of a circular shield bevel structure, liquid outlet holes are formed in the side wall of the bottom end of the washing part along the circumferential direction, and the number of the liquid outlet holes is y;

the bottom end of the flushing part is of a straight pipe structure or a bent pipe structure.

3. The intravascular flusher with the auxiliary structure for cerebral vascular reconstruction of claim 1, wherein the injection part comprises a closing plug, an injection needle and an injector, the closing plug is fixed at a branch port, the end of the injector is provided with the injection needle, and the injection needle passes through the closing plug and is connected with a branch of the fixed tube.

4. The intravascular flusher for reconstructing cerebral blood vessel with auxiliary structure according to claim 1, wherein said injection part is a syringe.

5. The intravascular flusher for reconstructing cerebral blood vessel with auxiliary structure according to claim 3, wherein said closing plug is a heparin cap.

6. The intravascular flusher for reconstructing a cerebral blood vessel according to claim 1, wherein the holding portion is a syringe, and a mounting member is mounted on an upper end portion of the mounting tube, and the mounting member is made of a frosted rubber material.

7. The intravascular flusher with the auxiliary structure for reconstructing the cerebral vessels as claimed in claim 1, wherein the grasping portion comprises a fixing rod, a sleeve rod and a fixing ring buckle, the end portion of the fixing rod is provided with the sleeve rod through the fixing ring buckle, the fixing rod is connected with the sleeve rod to form a telescopic structure, and the fixing rod and the sleeve rod are both made of a frosted plastic material or a matte titanium alloy material.

8. The intravascular flusher with auxiliary structures for cerebral vascular reconstruction of claim 7, wherein the fixing ring fastener is installed at the lower end of the fixing rod, the sleeve rod is sleeved in the fixing ring fastener, and the sleeve rod is installed at the lower end of the fixing rod;

the fixing ring buckle is transversely provided with a fixing hole, the fixing hole is connected with a jacking screw, and the loop bar penetrates through the fixing hole of the fixing ring buckle through the jacking screw and is gradually screwed down to be connected with the fixing rod;

the sleeve rod is provided with scale marks; the side wall of the fixed rod is provided with textures; the fixed rod is of a straight rod structure or a bent rod structure.

9. The intravascular flusher with auxiliary structures for cerebral vascular reconstruction of claim 7, wherein the loop bar is installed at the lower end of the fixing rod, and the fixing ring buckle is sleeved outside the loop bar; the outer wall of the fixed rod is provided with a thread structure, the inner wall of the upper end of the sleeve rod is provided with a thread structure, and the sleeve rod is connected with the fixed rod through the thread structure;

the upper end of the loop bar is longitudinally provided with a groove, the fixed ring buckle is arranged at the groove dividing position, a fixed groove is formed in the fixed ring buckle, the axial section of the fixed groove is in a wedge-shaped structure, the inner wall of the fixed groove is provided with a thread structure, the outer wall of the groove dividing position at the upper end of the loop bar is provided with a thread structure, and the fixed ring buckle is connected with the loop bar through the thread structure; the thread structure of the outer wall of the groove dividing position of the sleeve rod is opposite to the thread structure of the inner wall of the sleeve rod; the fixed rod is provided with scale marks, and the loop bar is of frosted or matte texture;

the upper end part of the fixed rod is provided with anti-falling textures.

Images