CN114984340A

CN114984340A - Detachable drainage flushing sleeve device

Info

Publication number: CN114984340A
Application number: CN202210606066.XA
Authority: CN
Inventors: 刘国彦; 丁晨淳; 李茵; 程书语; 左仁杰
Original assignee: Xiamen University
Current assignee: Xiamen University
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-09-02

Abstract

The invention discloses a detachable drainage flushing cannula device which is characterized by comprising a drainage tube, a flushing tube, an inner cannula and an outer cannula; the drainage tube and the flushing tube can be inserted in the inner sleeve, the drainage tube and the flushing tube can be fixed relative to the inner sleeve, and a drainage operation port of the drainage tube and a flushing operation port of the flushing tube both extend out of the front end of the inner sleeve; the inner sleeve can be inserted in the outer sleeve, the inner sleeve can move axially relative to the outer sleeve under the action of external force, both ends of the outer sleeve are open, the drainage operation port and the flushing operation port extend out of the front end opening of the outer sleeve, and the outer sleeve can be placed in the body of a patient. In the invention, the drainage tube is not required to be placed into the body of a patient in advance, thereby avoiding the medical side injury; the inner sleeve pipe can stretch out and draw back along the outer tube when exerting external force to can quick replacement drainage tube, avoid the drainage tube to block up for a long time, can also adjust the degree of depth of putting into of drainage tube and flushing pipe in a flexible way simultaneously, in order to obtain the best and wash and drainage effect.

Description

Detachable drainage flushing sleeve device

Technical Field

The present invention relates to medical devices for treating post-operative complications, and more particularly to a detachable drainage irrigation cannula device.

Background

The formation of the fistula is a common complication after the operation of the digestive tract, and the formation of the fistula is very easy to be accompanied with the infection. If infection occurs, the hospital stay of the patient is prolonged, and a series of subsequent complications which seriously endanger life occur, so that the life health and family economy of the patient are greatly influenced. The fistula formation is unpredictable and is usually closely related to uncontrollable factors such as the constitution, local blood supply and the surrounding environment of the operation area of a patient.

The drainage tube is used for draining secretion, blood and pus in the fistula outwards, and the drainage aims to reduce the probability of postoperative inflammation. For some operations with or without pollution, such as gastrointestinal tract operation, the drainage tube is put into the human body in advance to play a preventive role. One end of the drainage tube is inserted into the wound surface generating the fistula, the other end of the drainage tube is connected with extracorporeal equipment, and secretions, blood and pus in the fistula are drained outwards in modes of negative pressure, gravity and the like. However, the early placement of the drain may cause a medical side-effect injury to patients who do not have a fistula or abscess formed.

The drainage tube is likely to be blocked due to the viscosity of pus or blood stasis in the drainage process. The drainage tube may be folded and deformed due to factors such as suction force during drainage, so that the drainage is not smooth. When a blockage occurs in the drainage tube, the prior art pulls out the drainage tube and then re-inserts a new drainage tube. However, the drainage tube is fixed on the skin of the patient in advance through a suture line, if the drainage tube is to be pulled out, the suture line for fixing the drainage tube is cut off, then the patient is instructed to inhale deeply and then hold the breath, and the drainage tube is pulled out when the patient holds the breath. Sutures are also required to secure the new drain to the patient's skin after the new drain is placed. It can be seen that the replacement of a new drainage tube increases the pain of the patient during treatment and further increases the risk of secondary infection

Therefore, how to avoid the medical side injury caused by the drainage tube and how to avoid the pain of the patient when a new drainage tube is placed is a key problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

The invention aims to avoid medical side injury caused by a drainage tube and avoid pain of a patient when a new drainage tube is placed.

A detachable drainage flushing cannula device is characterized by comprising a drainage tube, a flushing tube, an inner cannula and an outer cannula;

the drainage tube and the flushing tube can be inserted into the inner sleeve, the drainage tube and the flushing tube can be fixed relative to the inner sleeve, and a drainage operation port of the drainage tube and a flushing operation port of the flushing tube both extend out of the front end of the inner sleeve;

the inner sleeve can be inserted in the outer sleeve, the inner sleeve can axially move relative to the outer sleeve under the action of external force, two ends of the outer sleeve are both provided with openings, the drainage operation port and the flushing operation port both extend out of the opening at the front end of the outer sleeve, and the outer sleeve can be placed in the body of a patient.

Preferably, the outer sleeve is a silicone tube, and the inner sleeve is a silicone tube.

Preferably, the outer sleeve is a transparent tube, and scales arranged along the axial direction are arranged on the outer sleeve.

Preferably, the front end of the inner sleeve is a closed end, a drainage tube through hole in interference fit with the drainage tube is formed in the closed end, and a flushing tube through hole in interference fit with the flushing tube is further formed in the closed end.

Preferably, the drainage operation opening comprises a front end opening of the drainage tube and a plurality of drainage holes arranged on the drainage tube body, and the plurality of drainage holes are spirally arranged around the axis of the drainage tube.

Preferably, the flushing operation port comprises a front port of the flushing pipe, and further comprises a plurality of flushing holes arranged on the flushing pipe body, and the plurality of flushing holes are spirally arranged around the axis of the flushing pipe.

Preferably, the length of the drainage tube extending out of the front end of the inner cannula is shorter than the length of the irrigation tube extending out of the front end of the inner cannula.

Preferably, emergency drainage holes are formed in the tube body of the inner sleeve and are close to the front end of the inner sleeve, the number of the emergency drainage holes is multiple, and the emergency drainage holes are spirally arranged around the axis of the inner sleeve.

Preferably, the inner sleeve is longer than the outer sleeve.

Preferably, the rear end of the flushing pipe is used for inserting into a flushing liquid container, and a flushing regulator is arranged on the flushing pipe.

Preferably, the rear end of the drainage tube is inserted into a drainage fluid collection container, and a drainage regulator is arranged on the drainage tube.

Preferably, the drainage liquid collecting container is communicated with a negative pressure source device through a negative pressure connecting pipe, and a pressure regulator is arranged on the negative pressure connecting pipe.

Preferably, the drain tube is divided into two parts which are plugged together by means of a pluggable quick connector.

According to the technical scheme, the main beneficial effects of the invention comprise the following points:

firstly, the drainage tube is not required to be placed into the body of a patient in advance, so that the medical side injury is avoided;

secondly, the inner sleeve can stretch along the outer sleeve when external force is applied, so that the drainage tube can be quickly replaced, the long-time blockage of the drainage tube is avoided, and meanwhile, the placement depth of the drainage tube 9 and the flushing tube can be flexibly adjusted to obtain the optimal flushing and drainage effects;

thirdly, the outer sleeve is a transparent tube, and scales are arranged on the outer sleeve, so that the placement depth of the drainage tube and the flushing tube can be represented according to scale marks pointed by the rear end of the inner sleeve, and the drainage tube and the flushing tube can be accurately reset when the drainage tube 9 and the flushing tube 8 are accidentally separated;

fourthly, the drainage holes which are arranged in a spiral way form a multi-section omnibearing suction area, and the drainage effect is optimized. The spirally arranged flushing holes form a flushing vortex, thereby facilitating sufficient irrigation;

fifthly, the inner sleeve is provided with emergency drainage holes to drain when the drainage tube is blocked, so that drainage interruption is avoided;

sixth, the pluggable quick connector can be disconnected when the patient goes to the toilet or is examined in the hospital.

Drawings

In order to more clearly illustrate the solution of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive efforts.

FIG. 1 is a schematic diagram of the overall structure of a replaceable drainage irrigation cannula provided in accordance with an embodiment of the present invention;

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

FIG. 3 is a schematic view of the structure of a drainage tube and an irrigation tube according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an outer sleeve according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an inner sleeve according to an embodiment of the present invention.

Wherein, 1 is negative pressure source equipment, 2 is a flushing liquid container, 3 is a drainage liquid collecting container, 4 is a flushing regulator, 5 is a pressure regulator, 6 is a drainage regulator, 7 is a pluggable quick connector, 8 is a flushing pipe, 9 is a drainage pipe, 10 is a negative pressure connecting pipe, 11 is an outer sleeve, 12 is an inner sleeve, 81 is a front port of the flushing pipe, 82 is a flushing hole, 91 is a front port of the drainage pipe, 92 is a drainage hole, 121 is a drainage pipe through hole, 122 is a flushing pipe through hole, and 123 is an emergency drainage hole.

Detailed Description

The invention discloses a detachable drainage flushing sleeve, which can avoid medical side injury caused by a drainage tube and can avoid pain of a patient when a new drainage tube is placed.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Reference herein to the "anterior end" is to the end proximal to the patient and reference to the "posterior end" is to the end distal to the patient.

Please refer to fig. 1-5.

The invention discloses a detachable drainage flushing sleeve device, which comprises: a drainage tube 9, an irrigation tube 8, an inner sleeve 12 and an outer sleeve 11. The drainage tube 9 and the irrigation tube 8 can be inserted into the inner sleeve 12. After the drainage tube 9 and the irrigation tube 8 are inserted into the inner tube 12, the drainage tube 9 and the irrigation tube 8 are fixed with respect to the inner tube 12, so that the drainage tube 9, the irrigation tube 8 and the inner tube 12 are combined into an inner tube 12 combined tube. And, the drainage operation mouth of drainage tube 9 and the washing operation mouth of washing pipe 8 all stretch out from the front end of interior sleeve pipe 12, just so drainage operation mouth and washing operation mouth can the smooth operation.

The inner sleeve 12 can be inserted into the outer sleeve 11, and the inner sleeve 12 can be axially displaced relative to the outer sleeve 11 under the influence of an external force. Both ends of the outer sleeve 11 are open, the inner sleeve 12 is inserted from the rear end opening of the outer sleeve 11, and the drainage operation port of the drainage tube 9 and the flushing operation port of the flushing tube 8 extend from the front end opening of the outer sleeve 11. Also, the outer cannula 11 may be placed within the body of the patient.

In a surgery such as a gastrointestinal tract surgery where contamination may occur, the overtube 11 is inserted into the body of the patient. If a fistula is formed in the patient's body, the inner cannula 12, fitted with the drainage tube 9 and the irrigation tube 8, is inserted into the outer cannula 11, thereby achieving the placement of the drainage tube 9 and the irrigation tube 8. Compared with the technical scheme that the drainage tube 9 is pre-arranged in the body of the patient in the prior art, the drainage tube 9 is not arranged in advance, and the drainage tube 9 is arranged only when the fistula appears in the body of the patient, so that the medical side injury is effectively avoided.

The drainage tube 9 is likely to be blocked due to the viscosity of pus or blood stasis during the drainage process. The drainage tube 9 may be folded and deformed due to factors such as suction force during the drainage process, so that the drainage is not smooth. If a drainage disorder occurs, it is only necessary to pull out the inner cannula 12, then to fit a new drain tube 9 into the inner cannula 12, and finally to reinsert the inner cannula 12 into the outer cannula 11. Compared with the technical scheme that the suture for fixing the drainage tube 9 needs to be cut off firstly, the drainage tube 9 is fixed on the skin of a patient through the suture after a new drainage tube 9 is placed in the drainage tube, the technical scheme that the suture does not need to be cut off and only the inner sleeve 12 needs to be pulled out or inserted can obviously relieve the pain of the patient, and the efficiency for placing the new drainage tube 9 can be obviously improved, so that the risk of infection of the patient can be reduced.

It should be noted that, if the drainage tube 9 is fixedly connected with the inner sleeve 12 in an interference fit manner, when the drainage tube 9 is blocked, the drainage tube 9 can be only pulled out, and after a new drainage tube 9 is replaced, the new drainage tube 9 is assembled into the inner sleeve 12, so that the new drainage tube 9 can be inserted.

It should also be noted that for fistulae with larger or narrow cavities, the specific depth of the fistula is not known. The drainage tube 9 and the irrigation tube 8 are often placed at an insufficient depth to cause incomplete irrigation and drainage. When this occurs, it is necessary to increase the depth of insertion of the drainage tube 9 and the irrigation tube 8. If the depth of insertion of the drainage tube 9 and the irrigation tube 8 is to be increased in the prior art, the suture for fixing the irrigation tube 8 and the drainage tube 9 is released first, and after the insertion into place, the irrigation tube 8 and the drainage tube 9 need to be fixed to the skin of the patient again by the suture. This mode of operation not only increases patient's misery, has improved the risk of patient's infection simultaneously. In the present invention, however, if the depth of insertion of the drainage tube 9 and the irrigation tube 8 is to be changed, it is only necessary to apply an external force to the inner tube 12 so as to move the inner tube 12 in the axial direction of the outer tube 11. If the depth of the drainage tube 9 and the flushing tube 8 is increased, the inner sleeve 12 is driven to move towards the front end of the outer sleeve 11; if the depth of insertion of the drainage tube 9 and the irrigation tube 8 is to be reduced, the inner sleeve 12 is driven towards the rear end of the outer sleeve 11. It should be noted that, since the drainage tube 9 and the irrigation tube 8 are fixed relative to the inner tube 12, the movement amount of the inner tube 12 is the movement amount of the drainage tube 9 and the irrigation tube 8.

In addition, because the inner sleeve 12 is placed in the body of a patient, the inner sleeve 12 forms certain attraction to surrounding tissues, the fistula tissues tend to be attached continuously due to the attraction under the condition of full flushing, the filling of granulation tissues and fibrous tissues in the fistula is promoted, and the healing process is promoted. At the same time, the inner cannula 12 is gradually pulled out, so that the fistula tissue is continuously repaired and healed, thereby greatly shortening the hospitalization time of the patient.

In the present invention, the material of the outer sleeve 11 is preferably silica gel, that is, the outer sleeve 11 is a silica gel tube. The material of the inner tube 12 is preferably silicone, and the inner tube 12 is also a silicone tube. And the present invention defines that the outer diameter of the inner sleeve 12 is smaller than the inner diameter of the outer sleeve 11 by 0.1 mm. After the inner sleeve 12 is inserted into the outer sleeve 11, the inner sleeve 12 is fixed relative to the outer sleeve 11 when no external force is applied, and the inner sleeve 12 is almost in sealing engagement with the outer sleeve 11, or the gap between the inner sleeve 12 and the outer sleeve 11 is very small. If it is desired to adjust the replacement of the inner cannula 12 or to adjust the depth of insertion of the drainage tube 9 and the irrigation tube 8, an external force can be applied to the inner cannula 12 to axially displace the inner cannula 12 within the outer cannula 11.

In one embodiment of the invention, the outer diameter of the inner jacket tube 12 is designed to be 9.5mm and the inner diameter is designed to be 8mm, and the outer diameter of the outer jacket tube 11 is designed to be 11.5mm and the inner diameter is designed to be 9.6 mm.

The outer sleeve 11 of the present invention is also a transparent tube, and the outer sleeve 11 is provided with scales arranged along the axial direction of the outer sleeve 11. The inner sleeve 12 can be seen through the outer sleeve 11 as moving axially relative to the outer sleeve 11. Specifically, the axial movement of the inner tube 12 can be judged by the scale line indicated by the rear end of the inner tube 12.

After the inner tube 12, the drainage tube 9 and the irrigation tube 8 are placed in the patient's body, the scale value corresponding to the rear end of the inner tube 12 is recorded. When the drainage tube 9 or the irrigation tube 8 is pulled out due to accidental pulling of a patient and the like, the drainage tube 9 and the irrigation tube 8 can be assembled into the inner sleeve 12 again, and then the inner sleeve 12 is inserted according to the recorded scale value, so that the drainage tube 9 and the irrigation tube 8 can be ensured to be placed to the initial depth, and the optimal irrigation and drainage effects can be obtained again.

It should be noted that the length of the flushing tube 8 and the drainage tube 9 extending out of the front end of the inner casing 12 is usually a fixed value, so that the depth of the flushing tube 8 and the drainage tube 9 is the initial depth after the rear end of the inner casing 12 is inserted to the recorded scale value.

Regarding the specific assembly relationship of the drainage tube 9 and the irrigation tube 8 with the inner cannula 12: in the present invention, the front end of the inner tube 12 is provided as a closed end for closing the front end opening of the inner tube 12. A drainage tube through hole 121 and a flushing tube through hole 122 are provided at the closed end of the inner casing 12. The drainage tube 9 is in interference fit with the drainage tube through hole 121. The flush tube 8 is an interference fit with the flush tube through bore 122. In this way, after the drainage tube 9 and the flushing tube 8 are assembled in the inner sleeve 12, the drainage tube 9 and the flushing tube 8 can be kept fixed by the interference fit relationship, so that the drainage tube 9 and the flushing tube 8 are ensured not to be extruded in a dislocation manner due to factors such as water flow and suction, and smoothness of drainage and flushing is ensured. The interference fit also acts as a seal to prevent the exuded fluids from escaping through the gap between the inner sleeve 12 and the outer sleeve 11.

The drainage port and the flushing port are described next: the drainage operation port of the invention comprises a front port 91 of the drainage tube 9 and a drainage hole 92 arranged on the tube body of the drainage tube 9. The drainage hole 92 is plural, and the plural drainage holes 92 are spirally arranged around the axis of the draft tube 9. And along the spiral trajectory, the two adjacent drainage apertures 92 are spatially angled at 120 °. Similar to the drainage port, the flushing port includes a front port 81 of the flushing pipe 8 and a flushing hole 82 provided in the body of the flushing pipe 8. The flushing holes 82 are plural, and the plural flushing holes 82 are spirally arranged around the axis of the flushing pipe 8. And the adjacent two flushing holes 82 have an included angle of 120 degrees in space along the spiral track.

Further, the present invention opens the drainage hole 92 from about 150mm from the front port 91 of the drainage tube 9 to form a large area drainage. The present invention begins with the irrigation hole 82 being approximately 50mm from the front port 81 of the irrigation tube 8 so that the irrigation hole 82 is closer to the fistula wound bed.

The drainage holes 92 which are spirally arranged on the drainage tube 9 form a multi-section omnibearing suction area, and the suction area for drainage is larger and more uniform. In addition, the helically arranged drainage openings 92 of the drainage tube 9 can form a vortex in the fistula cavity of the fistula when the air flow is drawn in, thereby facilitating sufficient drainage. The helically arranged flushing holes 82 of the flushing tube 8 enable a vortex to be formed in the fistula cavity of the fistula during flushing, thereby facilitating an adequate irrigation.

Further, the present invention defines that the length of the drainage tube 9 protruding out of the front end of the inner tube 12 is shorter than the length of the irrigation tube 8 protruding out of the front end of the inner tube 12. In other words, the irrigation tube 8 is closer to the fistula wound than the drainage tube 9. So set up on the one hand and ensure that the flush fluid that the flushing pipe 8 flows out can not be by drainage operation mouth of drainage tube 9 and can attract to can keep sufficient washing time, on the other hand is attracted by drainage operation mouth again after being assembled by the filth that the flush fluid washed, thereby ensures that the filth is fully attracted.

In a specific embodiment of the invention, the length of the extension of the irrigation tube 8 is defined to be 3cm longer than the length of the extension of the drainage tube 9. And the drainage holes 92 and the flushing holes 82 are both 3.5mm in outer diameter and 2.5mm in inner diameter. The aperture of the drainage hole 92 and the aperture of the flushing hole are both 1.5 mm.

The emergency drainage hole 123 is formed in the front end of the tube body of the inner sleeve 12, the number of the emergency drainage holes 123 is multiple, and the multiple emergency drainage holes 123 are spirally arranged around the axis of the inner sleeve 12. When the drainage tube 9 is blocked, the dirt can be discharged out of the body through the emergency drainage hole 123, so that drainage interruption is avoided, and the infection risk is further reduced. In one embodiment of the present invention, the diameter of the emergency drainage hole 123 is designed to be 2.5 mm.

Further, the length of the inner sleeve 12 is limited to be longer than that of the outer sleeve 11, so that even if the rear end of the inner sleeve 12 is located at the zero graduation mark of the outer sleeve 11, the front end of the inner sleeve 12 extends out of the outer sleeve 11, and the emergency drainage hole 123 is located outside the outer sleeve 11, thereby ensuring that the emergency drainage hole 123 always plays a role in emergency drainage. In one embodiment of the invention, the length of the inner sleeve 12 is designed to be 270mm and the length of the outer sleeve 11 is designed to be 250 mm.

The front end of the flushing pipe 8 in the invention is used for being placed in the body of a patient and points to the wound surface of the fistula. The rear end of the rinsing pipe 8 is intended to be inserted into the rinsing liquid container 2. And a flush regulator 4 is provided on the flush pipe 8. The flushing regulator 4 is used to regulate the flow rate of the flushing liquid.

The front end of the drainage tube 9 is used for being placed into the body of a patient and pointing to the wound surface of the fistula. The rear end of the drainage tube 9 is for insertion into the drainage fluid collection receptacle 3. And a drainage tube 9 is provided with a drainage regulator 6, and the drainage regulator 6 is used for regulating the flow of drainage liquid.

The drainage liquid collecting container 3 is communicated with the negative pressure source device 1 through a negative pressure connecting pipe 10. The negative pressure connecting pipe 10 is provided with a pressure regulator 5. The drainage operation opening draws in dirt by means of the negative pressure source device 1.

The invention adjusts the negative pressure intensity by adjusting the pressure regulator 5, adjusts the drainage flow by the drainage regulator 6, and adjusts the flow of the flushing liquid by the flushing regulator 4, thereby obtaining the best flushing and drainage effects.

In addition, the drain tube 9 of the present invention is divided into two parts which are brought together by the quick disconnect 7.

In the prior art, when a patient goes to the toilet or performs a medical examination, the patient is required to carry the negative pressure source apparatus 1 with him. In the invention, the pressure regulator 5, the drainage regulator 6 and the flushing regulator 4 are closed at the same time, and then the pluggable quick connector 7 is disconnected, so that the drainage sleeve can be separated from the negative pressure source equipment 1, and the body position of a patient can be freely changed, thereby realizing the minimization of the body burden.

In summary, the main beneficial effects of the present invention include the following:

firstly, the drainage tube 9 is not required to be placed into the body of a patient in advance, so that the medical side injury is avoided;

secondly, the inner sleeve 12 can stretch along the outer sleeve 11 when external force is applied, so that the drainage tube 9 can be quickly replaced, the long-time blockage of the drainage tube 9 is avoided, and meanwhile, the embedding depths of the drainage tube 9 and the flushing tube 8 can be flexibly adjusted, so that the optimal flushing and drainage effects can be obtained;

thirdly, the outer sleeve 11 is a transparent tube, and the outer sleeve 11 is provided with scales, so that the insertion depth of the drainage tube 9 and the flushing tube 8 can be represented according to the scale lines indicated by the rear end of the inner sleeve 12, and the drainage tube 9 and the flushing tube 8 can be accurately returned when the drainage tube 9 and the flushing tube 8 are accidentally separated;

fourthly, the drainage holes 92 arranged spirally form a multi-section omnibearing suction area, and the drainage effect is optimized. The helically arranged irrigation holes 82 form an irrigation vortex to facilitate adequate irrigation;

fifthly, the inner sleeve 12 is provided with an emergency drainage hole 123 for drainage when the drainage tube 9 is blocked, so that drainage interruption is avoided;

sixth, the pluggable quick connector 7 can be disconnected when the patient goes to the toilet or is examined in the hospital.

An example of a clinical application of the detachable drainage irrigation cannula of the present invention is as follows:

1. the patient is Zhangzhi, male, and is 58 years old, the postoperative gastric cancer generates duodenal residual fistula, and symptoms such as abdominal pain, nausea, fever and the like appear, the detachable drainage flushing cannula device of the invention is used, and the fistula is smoothly healed after 3 days of antibiotic treatment.

2. When a patient is in a certain state, the female is 62 years old, and after rectal cancer, fistula is postoperative, the drainage tube 9 is blocked and unsmooth drainage is caused by feces after the detachable drainage flushing sleeve device is used for 2 days, the drainage tube 9 is pulled out after drainage and negative pressure source equipment is cut off, the drainage tube is quickly replaced, the seepage of the patient is completely drained after 6 days, and the fistula is completely healed.

3. The patient Zhao somewhat, man, 68 years old, stomach cancer postoperative takes place stomach small intestine anastomosis mouthful fistula, after keeping the removable drainage of this invention and washing the casing ware, because of accident leading to the drainage tube 9 to drop, medical staff puts into the degree of depth according to the record, resets rapidly, the fistula is completely healed up after 8 days.

Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A detachable drainage flushing cannula device is characterized by comprising a drainage tube, a flushing tube, an inner cannula and an outer cannula;

2. The detachable drainage irrigation cannula instrument of claim 1 wherein the outer cannula is silicone tubing and the inner cannula is silicone tubing.

3. The detachable drainage irrigation cannula according to claim 1, wherein the outer cannula is a transparent tube and the outer cannula is provided with graduations arranged along an axial direction.

4. The detachable drainage flushing cannula device according to claim 1, wherein the front end of the inner cannula is a closed end, and a drainage tube through hole in interference fit with the drainage tube and a flushing tube through hole in interference fit with the flushing tube are arranged on the closed end.

5. The removable drain flushing cannula of claim 1, wherein the drain working port comprises a front port of the drain tube, and further comprising a plurality of drain holes disposed in the drain tube body, the plurality of drain holes being arranged helically about an axis of the drain tube.

6. The removable drain flush cannula according to claim 1, wherein the flush port comprises a front port of the flush tube, and further comprising a plurality of flush holes provided in the flush tube body, the plurality of flush holes being arranged in a spiral about an axis of the flush tube.

7. The detachable drainage irrigation trocar of claim 1 wherein the length of the drainage tube extending out of the forward end of the inner cannula is shorter than the length of the irrigation tube extending out of the forward end of the inner cannula.

8. The removable and replaceable drainage irrigation sleeve of claim 1 wherein there are a plurality of emergency drainage holes disposed in the body of the inner sleeve near the forward end of the inner sleeve, the plurality of emergency drainage holes being arranged in a spiral around the axis of the inner sleeve.

9. The collapsible drainage irrigation cannula of claim 8 wherein the inner cannula is longer than the outer cannula.

10. The detachable drain flushing cannula apparatus according to claim 1, wherein a rear end of said flushing tube is adapted to be inserted into a flushing fluid container, said flushing tube having a flushing regulator disposed thereon.

11. The removable drainage irrigation cannula of claim 1 wherein the rear end of the drainage tube is inserted into a drainage fluid collection receptacle, the drainage tube having a drainage regulator disposed thereon.

12. The removable drainage irrigation cannula of claim 11 wherein the drainage collection container is in communication with a negative pressure source device through a negative pressure connection tube having a pressure regulator disposed thereon.

13. The removable drain flush cannula according to claim 11, wherein the drain tube is divided into two portions that are plugged together by a pluggable quick connector.