CN218900368U - Double-sleeve drainage flushing pipe with replaceable outer sleeve body - Google Patents

Abstract

The utility model discloses a double-sleeve drainage flushing pipe with a replaceable outer sleeve body, which belongs to the technical field of medical drainage instruments and comprises a guide wire, an inner tube, the same outer sleeve and a standby outer sleeve, wherein the inner tube body of the inner tube sequentially comprises an inner tube head, an inner tube body and an inner tube tail from near to far, and the inner tube head is a blind end and adopts a mushroom-shaped structure; the proximal end of the outer sleeve head is provided with a circular opening which is matched with the outer diameter of the built-in pipe body, and the proximal end side of the outer sleeve body is provided with a plurality of second side holes; when the guide wire is arranged in the inner tube body and the inner tube body is arranged in the outer sleeve, the outer sleeve can be moved away from the inner tube body along the axial direction of the inner tube body, and the standby outer sleeve can be arranged on the inner tube body along the original path. The utility model can change the outer sleeve into the standby outer sleeve, ensure that the standby outer sleeve is safely and accurately arranged at the original position of the outer sleeve, and ensure that the drainage and flushing functions of the double-sleeve drainage flushing pipe are recovered to be normal.

Description

Double-sleeve drainage flushing pipe with replaceable outer sleeve body

Technical Field

The utility model belongs to the technical field of medical drainage instruments, and particularly relates to a double-sleeve drainage flushing pipe with a replaceable outer sleeve body.

Background

The double-sleeve flushing drainage tube is a drainage tube which is relatively commonly used in surgical operation, and comprises an outer sleeve body and a built-in tube body fixedly penetrating the outer sleeve body, wherein a plurality of side holes are formed in the side wall of the proximal end of the outer sleeve body.

The blockage of the side hole of the outer sleeve body of the double-sleeve flushing drainage tube is a main cause of losing the effect. After the double-sleeve flushing drainage tube is placed in a body cavity for a period of time, the side holes of the outer sleeve body are easily blocked by tissue fragments, necrotic tissues, exudation or leakage and the like, so that newly added liquid and exudation leakage in the body cavity are difficult to enter or even cannot enter the tube cavity of the outer sleeve body, the double-sleeve flushing drainage tube cannot be drained to the outside of the body through the built-in tube body, and the effect of the double-sleeve flushing drainage tube is lost.

At present, the method for removing the blockage of the side hole of the outer sleeve body of the double-flushing drainage tube mainly comprises the following steps: (1) The liquid is repeatedly used for flushing back to flush down the blocking object blocked on the side hole of the pipe wall of the outer sleeve body, but the success rate is very low. (2) Replacing the double-set flushing drainage tube, pulling out the whole double-set flushing drainage tube which is blocked by the wall of the outer sleeve body from the body, and repositioning a new double-set flushing drainage tube; however, once the double-set flushing drainage tube is pulled out, the tissue in the body cavity can rapidly squeeze and occupy the position of the double-set flushing drainage tube, so that the new double-set flushing drainage tube cannot be returned to the body cavity through an original path, even if the new double-set flushing drainage tube is inserted into the body cavity, the new double-set flushing drainage tube can not be placed at the original position of the double-set flushing drainage tube, and the damage and bleeding of the tissue, the organ in the body cavity, and the new complications are generated, so that the medical safety is endangered. Therefore, after the side hole of the outer sleeve body of the double-sleeve flushing drainage tube is blocked, the double-sleeve flushing drainage tube is very difficult to treat, and the currently used double-sleeve flushing drainage tube needs to be improved.

Disclosure of Invention

The utility model provides a double-set drainage flushing pipe with a replaceable outer sleeve body, which aims to solve the problems in the prior art, and can replace the outer sleeve with a standby outer sleeve, ensure that the standby outer sleeve is safely and accurately arranged at the original position of the outer sleeve and ensure that the drainage and flushing functions of the double-set drainage flushing pipe are recovered to be normal.

In order to achieve the above object, the technical scheme of the present utility model provides a double-set drainage flushing pipe with replaceable outer sleeve body, comprising a built-in pipe body and an outer sleeve body, the drainage flushing pipe comprises: the guide wire comprises a guide wire head part, a guide wire body part and a guide wire tail part from near to far in sequence; the built-in pipe comprises a built-in pipe body, wherein the built-in pipe body comprises a built-in pipe head part, a built-in pipe body part and a built-in pipe tail part from near to far in sequence, the built-in pipe head part is a blind end and adopts a mushroom-shaped structure, and a first side hole is formed in the near end side of the built-in pipe body part; the outer sleeve comprises an outer sleeve body and a fixing piece, wherein the fixing piece is used for detachably fixing the outer sleeve body to the built-in pipe body, the outer sleeve body sequentially comprises an outer sleeve head, an outer sleeve body and an outer sleeve tail from near to far, a round opening is formed in the proximal end of the outer sleeve head, the opening is matched with the outer diameter of the built-in pipe body, a plurality of second side holes are formed in the proximal end side of the outer sleeve body, a first horn mouth with gradually increased diameter from near to far is formed in the outer sleeve tail, the fixing piece is connected to the side wall of the outer sleeve tail through a string, and the fixing piece is detachably installed in the first horn mouth; a spare outer sleeve which has the same structure as the outer sleeve; when the guide wire is installed in the inner tube body and the inner tube body is installed in the outer sleeve, the outer sleeve can be moved away from the inner tube body along the axial direction of the inner tube body, and the standby outer sleeve can be installed on the inner tube body along the original path.

Further, the inner catheter body length a, the outer catheter body length b, and the guide wire length c, wherein a=c=2b.

Further, the tail part of the guide wire comprises a small cylinder and a large cylinder which are coaxial with the guide wire and are arranged from near to far, the diameter of the large cylinder is larger than that of the small cylinder, the diameter of the large cylinder is adaptive to the outer diameter of the built-in pipe body, and the diameter of the small cylinder is adaptive to the inner diameter of the built-in pipe body.

Further, the head of the outer sleeve adopts a curved surface structure protruding towards the proximal end side, and a circular opening is formed in the middle of the curved surface structure.

Further, the mounting is including the symmetry locate two same semicircle toper plugs of outer tube afterbody lateral wall, semicircle toper plug side middle part is equipped with along its axis direction's semicircle recess, two semicircle toper plugs can splice for can the tight fit in the conical structure of first horn mouth, two semicircle recess can splice into the round hole, built-in pipe body can the tight fit in the round hole.

Further, a liquid inlet pipe and a gas exchange pipe which are communicated with the outer sleeve body are arranged on the far end side of the outer sleeve body, and the inner diameter of the liquid inlet pipe and the inner diameter of the gas exchange pipe are both matched with the outer diameter of a nipple of the injector.

Further, the tail part of the built-in pipe is provided with external threads; the inner tube also comprises a joint for connecting the nipple of the injector, and the proximal end of the joint is provided with an internal thread matched with the external thread.

Further, the distal end side of the joint is provided with a second bell mouth with gradually increased diameter from near to far, the joint is further provided with a conical plug which can be tightly matched with the second bell mouth, the conical plug is connected with the outer wall of the joint through a string, and the conical plug is provided with a circular hole matched with the nipple outer diameter of the injector.

Further, the outer sleeve body, the guide wire and the outer wall of the inner tube body are provided with scale marks along the length direction.

Compared with the prior art that the outer sleeve of the double-sleeve flushing drainage tube cannot be replaced independently, and the double-sleeve flushing drainage tube which is replaced with a new double-sleeve flushing drainage tube is difficult to place to the original position, the double-sleeve drainage flushing tube with the replaceable outer sleeve body is provided with the outer sleeve body, the outer sleeve is detachably and slidably arranged in the built-in tube, and after the second side hole of the outer sleeve is blocked, the outer sleeve can be replaced independently with a standby outer sleeve; when the guide wire is arranged in the inner catheter body and the inner catheter body is arranged in the outer catheter, the guide wire can support and fix the inner catheter body, the standby outer catheter can be safely and accurately placed at the original position of the outer catheter through the guide effect of the guide wire and the inner catheter body, and the drainage and flushing functions of the double-sleeve drainage flushing catheter are recovered.

Drawings

FIG. 1 is a schematic view of the structure of an outer cannula body of a double-set drainage flushing tube with a replaceable outer cannula body according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the double drainage irrigation tube with replaceable outer sleeve body according to the embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of a catheter inner tube of a double-set drainage flushing tube with a replaceable outer sleeve body according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of an outer cannula of a double-set drainage flushing pipe with a replaceable outer cannula body according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a guide wire of a double-set drainage flushing pipe with a replaceable outer sleeve body according to an embodiment of the present utility model.

Wherein: 1. a built-in tube; 11. a built-in pipe body; 111. a built-in pipe head; 112. a built-in pipe body; 113. the tail part of the built-in pipe; 114. a first side hole; 12. a joint; 121. a second flare; 122. a conical plug; 123. a circular hole; 124. a first end plug; 2. an outer sleeve; 21. an outer sleeve body; 211. a head of the outer sleeve; 212. an outer sleeve body; 213. the tail part of the outer sleeve; 214. an opening; 215. a second side hole; 216. a first flare; 217. a liquid inlet pipe; 218. a gas exchange tube; 219. a second end plug; 22. a fixing member; 221. a semi-conical plug; 222. a semicircular groove; 3. a guide wire; 31. a guidewire head; 32. a guidewire body; 33. a tail of the guide wire; 331. a small cylinder; 332. a large cylinder; 4. scale marks;

in the figure, a is the length of the inner tube body, b is the length of the outer tube body, and c is the length of the guide wire.

Detailed Description

The present utility model will now be described in detail with reference to the drawings and examples, wherein the examples are intended to be illustrative of only some, but not all, of the examples. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The "far" and "near" are used as references of the patient, and the "far" is a direction away from the patient, and the "near" is a direction close to the patient.

As shown in fig. 1 to 5, an embodiment of the present utility model provides a replaceable double-set drainage flushing tube of an outer sleeve body 21, the drainage flushing tube comprises a guide wire 3, a built-in tube 1, an outer sleeve 2 and a standby outer sleeve, wherein the guide wire 3 comprises a guide wire head 31, a guide wire body 32 and a guide wire tail 33 from near to far. The inner tube 1 comprises an inner tube body 11, the inner tube body 11 comprises an inner tube head 111, an inner tube body 112 and an inner tube tail 113 from near to far in sequence, the inner tube head is a blind end and adopts a mushroom-shaped structure, the outer diameter of the mushroom-shaped structure is larger than that of the inner tube body 112, and the inner tube head 111 can be prevented from being retracted into the tube cavity of the outer tube 2; the proximal side of the inner tube body 112 is provided with a first side aperture 114. The outer sleeve 2 comprises an outer sleeve body 21 and a fixing piece 22 for detachably fixing the outer sleeve body to the inner tube body 11, the outer sleeve body 21 sequentially comprises an outer sleeve head 211, an outer sleeve body 212 and an outer sleeve tail 213 from near to far, a round opening 214 is formed in the proximal end of the outer sleeve head, the opening 214 is matched with the outer diameter of the inner tube body 112, the outer sleeve head 211 can be abutted to the distal end side of the inner tube head 111, a plurality of second side holes 215 are formed in the proximal end side of the outer sleeve body 212, a first bell mouth 216 with gradually increased diameter from near to far is formed in the outer sleeve tail 213, the fixing piece 22 is connected to the side wall of the outer sleeve tail 213 through a string, and the fixing piece 22 is detachably mounted in the first bell mouth 216. The spare outer sleeve has the same structure as the outer sleeve 2.

The guide wire 3 adopts a metal wire, can support and fix the built-in pipe body 11 so as to facilitate the replacement of the outer sleeve 2, and can be used for dredging the built-in pipe body; when the installation is completed, the spinneret part 31, the inner tube head 111 and the outer tube head 211 are all located in the body cavity, and the guide wire tail 33, the inner tube tail 113 and the outer tube tail 213 are all located outside the body cavity. When the guide wire 3 is installed in the inner tube body 11 and the inner tube body is installed in the outer tube 2, the outer tube can be moved away from the inner tube body along the axial direction of the inner tube body, and the standby outer tube can be installed on the inner tube body 11 along the original path of the outer tube, so that the standby outer tube without a blockage is reinstalled at the position of the outer tube 2. The outer sleeve replacement step can be simplified, and damage to a patient is reduced.

Preferably, 2 to 4 first side holes 114 are provided, 2 first side holes 114 are staggered along the axial direction of the inner tube body 112 and are arranged on two opposite radial sides of the side wall of the inner tube body 112, the 2 first side holes are all positioned in a region 15cm away from the inner tube head 11, the diameter of the first side holes 114 is about 3mm, and liquid, tissue fragments and the like in the lumen of the outer tube 2 can be sucked into the lumen of the inner tube 1 through the first side holes and then drained outside the body.

Preferably, the second side holes 215 are each located within 10cm of the outer sleeve head 211, the second side holes 215 being about 3mm in diameter. Further, the plurality of second side holes 215 are uniformly distributed in a region 10cm from the outer sleeve head 211.

As shown in fig. 3 to 5, further, the inner catheter body 11 has a length a, the outer catheter body 21 has a length b, and the guide wire 3 has a length c, where a=c=2b. When the guide wire 3 is installed in the inner tube body 11, the guide wire head 31 is inserted into the inner tube head 111, so that the inner tube body 11 can be supported, and the original outer tube 2 can be conveniently taken out, and a standby outer tube can be conveniently installed; a=2b, so that the inner tube body 11 can provide a sufficient operation length for replacing the outer tube 2, thereby facilitating the replacement of the outer tube 2.

As shown in fig. 1 and 5, in some embodiments, the guidewire tail 33 includes a small cylinder 331 and a large cylinder 332 coaxial with the guidewire 3 and disposed proximally to distally, the large cylinder diameter being larger than the small cylinder diameter and the large cylinder 332 diameter being compatible with the outer diameter of the inner catheter body 11, the small cylinder diameter being compatible with the inner diameter of the inner catheter body to facilitate insertion of the small cylinder into the inner catheter tail 113. After the small cylinder 331 is plugged into the tail of the built-in tube, the large cylinder 332 can prevent the guide wire 3 from continuing to enter the built-in tube 1, and the guide wire 3 can be operated by controlling the large cylinder 332. Preferably, the small cylinder 331 and the large cylinder 332 are each about 0.5cm in length.

As shown in fig. 1, 2 and 4, in some embodiments, the outer cannula head 211 adopts a curved surface structure protruding towards the proximal end side, so that damage to tissues can be reduced when the outer cannula 2 is placed into a body cavity, a circular opening 214 is arranged in the middle of the curved surface structure, the diameter of the opening 214 is adapted to the outer diameter of the inner cannula body 11, and the outer cannula 2 can be sleeved on the inner cannula body 11 through the opening 214, thereby realizing replacement of the outer cannula 2.

As shown in fig. 4, in some embodiments, the fixing member 22 includes two identical semicircular conical plugs 221 symmetrically disposed on the side wall of the tail 213 of the outer sleeve along the axial middle section of the outer sleeve, a semicircular groove 222 is disposed in the middle of one side surface of the semicircular conical plug along the axial direction of the semicircular conical plug, the two semicircular conical plugs 221 can be spliced into a conical structure capable of being tightly matched with the first flare 216, the two semicircular grooves 222 can be spliced into a circular hole, the inner tube body 11 can be tightly matched with the circular hole, and the outer sleeve 2 can be fixed at a suitable position of the inner tube body 11. When the position of the outer sleeve 2 needs to be adjusted, the 2 semicircular conical plugs 221 are taken out, the outer sleeve 2 is adjusted to a proper position, and the 2 semicircular conical plugs 221 are closed to be plugged into the first bell mouth 216, so that the inner tube 1 and the outer sleeve 2 are firmly connected. Wherein the semi-conical plug 221 may be formed by a conical structure divided along its axial middle section.

As shown in fig. 1, 2, and 4, in some embodiments, the distal side of the outer cannula body 212 is provided with a liquid inlet tube 217 and a gas exchange tube 218 in communication with the outer cannula body 212, the liquid inlet tube 217 having an inner diameter and the gas exchange tube 218 having an inner diameter that corresponds to the outer diameter of the syringe nipple. The liquid can be injected or dripped into the outer sleeve 2 through the liquid inlet pipe 217; while continuing to draw from the inner catheter body 11, gas exchange may be performed through the gas exchange tube 218 to maintain the pressure in the lumen of the outer catheter 2. The liquid introduction tube 217 and the gas exchange tube 218 are each provided with a second end plug 219 capable of being fitted tightly to the ends thereof, and the second end plug 219 is fixed to the corresponding liquid introduction tube 217 or gas exchange tube 218 by a string.

As shown in fig. 2 and 3, in some embodiments, the inner tube tail 113 is provided with external threads; the inner tube 1 further comprises a joint 12 for connecting the nipple of the injector, an inner thread matched with the outer thread is arranged at the proximal end of the joint 12, and the joint 12 is screwed on the inner tube body 11, so that the joint 12 is convenient to install or detach.

As shown in fig. 2 and 3, further, the distal end side of the joint 12 is provided with a second flare 121 with a gradually increased diameter from near to far, the joint 12 is further provided with a tapered plug 122 capable of being tightly fitted in the second flare 121, the tapered plug 122 is connected to the outer wall of the joint 12 through a string, the tapered plug 122 is provided with a circular hole 123 matched with the outer diameter of a nipple of a syringe, the inner tube body 11 can be communicated with the syringe through the joint 12 to complete treatment operation, the tapered plug 122 is provided with a first end plug 124 capable of being tightly fitted in the circular hole 123, and the first end plug 124 is fixed to the tapered plug 122 through the string.

As shown in fig. 1 to 5, in some embodiments, the outer walls of the outer sleeve body 21, the guide wire 3 and the inner tube body 11 are provided with graduation marks 4 along the length direction thereof, and the implantation depth of the outer sleeve body 21, the guide wire 3 and the inner tube body 11 can be identified by the graduation marks 4, so that the outer sleeve body 21, the guide wire 3 and the inner tube body 11 can be positioned quickly and accurately, and the operation steps of replacing the outer sleeve 2 are simplified.

When the double drainage flushing pipe with the replaceable outer sleeve 2 provided by the embodiment of the utility model is used, the outer sleeve 2 can be replaced according to the following operation process:

1. preparation: as shown in fig. 1, the guide wire 3 and the spare outer sleeve are ready. The total length of the original outer sleeve body 21 and the scales corresponding to the body surface positions are recorded, and the length of the outer sleeve body 21 in the body cavity is calculated. The fitting 12 of the inner tube tail 113 is unscrewed and kept ready for use.

2. Replacement outer sleeve 2:

(1) Removing the original outer sleeve 2: the guide wire head 31 is inserted into the inner tube body 11 from the inner tube tail 113 to the inner tube head 111, and the small cylinder 331 of the guide wire tail 33 is inserted into the inner tube tail, so that the guide wire 3 is mounted in the inner tube body. Then the 2 semicircular conical plugs 221 in the first horn mouth 216 of the outer sleeve tail 213 are loosened, so that the outer sleeve 2 can slide along the inner tube body 11; the fixation of the outer sleeve 2 on the body surface is released, such as suture removal. Then, the outer cannula 2 is slowly withdrawn along the axial direction of the inner catheter by fixing the inner catheter tail and the large cylinder 332 of the guide wire 3 by hand until the outer cannula head 211 is moved out of the body cavity, and then the outer cannula 2 is removed. The medical cleaning liquid is used for cleaning and disinfecting the inner tube body and the guide wire 3.

(2) Installing a standby outer sleeve: the large cylinder 332 and the tail of the built-in tube are firstly inserted from the opening 214 of the head 211 of the standby outer tube until the most tip of the standby outer tube reaches the body surface, the head 211 of the outer tube is slowly inserted into the deep part of the body cavity from the skin opening 214 of the original outer tube 2 penetrating out of the body cavity until the insertion depth of the standby outer tube is equivalent to the depth of the original outer tube 2 in the body cavity. Then, 2 semicircular conical plugs 221 at the tail part 213 of the standby outer sleeve are plugged into the first bell mouth 216 to fix the built-in pipe and the standby outer sleeve; the standby outer sleeve is well fixed on the body surface through fixing measures; the inner catheter body is fixed by one hand, the large cylinder 332 of the guide wire tail 33 is pinched by the other hand, the guide wire 3 is slowly pulled out, and the guide wire 3 is removed from the inner catheter 1.

3. Restoring the treatment function: as shown in fig. 2, the joint 12 is installed at the tail of the built-in tube, and the standby outer sleeve and the original built-in tube are combined into a new double-set drainage flushing tube, so that the drainage and flushing functions of the double-set drainage flushing tube are recovered.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be regarded as the scope of the description.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (9)

1. The utility model provides a removable two sets of drainage wash pipes of outer tube body, includes built-in pipe body and outer tube body, its characterized in that, drainage wash pipe includes: the guide wire comprises a guide wire head part, a guide wire body part and a guide wire tail part from near to far in sequence; the built-in pipe comprises a built-in pipe body, wherein the built-in pipe body comprises a built-in pipe head part, a built-in pipe body part and a built-in pipe tail part from near to far in sequence, the built-in pipe head part is a blind end and adopts a mushroom-shaped structure, and a first side hole is formed in the near end side of the built-in pipe body part; the outer sleeve comprises an outer sleeve body and a fixing piece, wherein the fixing piece is used for detachably fixing the outer sleeve body to the built-in pipe body, the outer sleeve body sequentially comprises an outer sleeve head, an outer sleeve body and an outer sleeve tail from near to far, a round opening is formed in the proximal end of the outer sleeve head, the opening is matched with the outer diameter of the built-in pipe body, a plurality of second side holes are formed in the proximal end side of the outer sleeve body, a first horn mouth with gradually increased diameter from near to far is formed in the outer sleeve tail, the fixing piece is connected to the side wall of the outer sleeve tail through a string, and the fixing piece is detachably installed in the first horn mouth; a spare outer sleeve which has the same structure as the outer sleeve; when the guide wire is installed in the inner tube body and the inner tube body is installed in the outer sleeve, the outer sleeve can be moved away from the inner tube body along the axial direction of the inner tube body, and the standby outer sleeve can be installed on the inner tube body along the original path.

2. The disposable double set drainage flush tube of claim 1, wherein said inner tube body has a length a, said outer tube body has a length b, and said guidewire has a length c, wherein a = c = 2b.

3. The disposable double-set drainage flushing tube of claim 1 wherein the guidewire tail comprises a small cylinder and a large cylinder coaxially disposed from proximal to distal with the guidewire, the large cylinder diameter being larger than the small cylinder diameter and the large cylinder diameter being compatible with the inner catheter body outer diameter and the small cylinder diameter being compatible with the inner catheter body inner diameter.

4. The disposable double-set drainage flushing pipe of claim 3, wherein the outer sleeve head adopts a curved surface structure protruding towards the proximal end side, and a circular opening is arranged in the middle of the curved surface structure.

5. The disposable double-sleeve drainage flushing pipe of claim 1, wherein the fixing piece comprises two identical semicircular conical plugs symmetrically arranged on the side wall of the tail of the outer sleeve, a semicircular groove is formed in the middle of one side surface of each semicircular conical plug along the axial direction of each semicircular conical plug, the two semicircular plugs can be spliced into a conical structure capable of being tightly matched with the first horn mouth, the two semicircular grooves can be spliced into a round hole, and the inner pipe body can be tightly matched with the round hole.

6. The disposable double drainage flushing tube of claim 1 wherein the distal end side of the outer cannula body is provided with a liquid inlet tube and a gas exchange tube in communication with the outer cannula body, both the liquid inlet tube inner diameter and the gas exchange tube inner diameter being compatible with the syringe nipple outer diameter.

7. The disposable double-set drainage flushing pipe of an outer sleeve body according to claim 1, wherein the tail part of the built-in pipe is provided with external threads; the inner tube also comprises a joint for connecting the nipple of the injector, and the proximal end of the joint is provided with an internal thread matched with the external thread.

8. The disposable double set drainage flushing tube of claim 7 wherein the distal end side of the connector is provided with a second flare which increases gradually from near to far in diameter, the connector is further provided with a tapered plug which can be tightly fitted to the second flare, the tapered plug is connected to the outer wall of the connector by a string, and the tapered plug is provided with a circular hole which matches the outer diameter of the nipple of the syringe.

9. The disposable double-set drainage flushing pipe of claim 1, wherein the outer sleeve body, the guide wire and the outer wall of the inner tube body are all provided with graduation marks along the length direction.

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