A detachable drainage and flushing cannula

Abstract

The present invention discloses a detachable drainage and flushing sleeve device, characterized in that it comprises a drainage tube, a flushing tube, an inner sleeve and an outer sleeve; 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 the drainage operation port of the drainage tube and the flushing operation port of the flushing tube both extend from the front end of the inner sleeve; the inner sleeve can be inserted into the outer sleeve, and under the action of an external force, the inner sleeve can move axially relative to the outer sleeve, both ends of the outer sleeve are openings, the drainage operation port and the flushing operation port both extend from the front end opening of the outer sleeve, and the outer sleeve can be placed in the patient's body. In the present invention, it is not necessary to place the drainage tube in the patient's body in advance, thereby avoiding medical side effects; when an external force is applied, the inner sleeve can be retracted along the outer sleeve, so that the drainage tube can be quickly replaced to avoid long-term blockage of the drainage tube, and the insertion depth of the drainage tube and the flushing tube can be flexibly adjusted to obtain the best flushing and drainage effect.

Description

Technical Field

[0001] The invention relates to a medical device for treating postoperative complications, and more particularly to a detachable drainage and flushing sleeve device. Background Art

[0002] Fistula formation is a common complication after gastrointestinal surgery. Fistula formation is very likely to be accompanied by infection. If infection occurs, the patient's hospitalization time will be prolonged, and a series of serious life-threatening subsequent complications will occur, which will have a great impact on the patient's life and health and family finances. Fistula formation is unpredictable and is usually closely related to uncontrollable factors such as the patient's physical condition, local blood supply, and the environment around the surgical area.

[0003] A drainage tube is a tube that drains secretions, blood, and pus from the fistula. The purpose of drainage is to reduce the probability of postoperative inflammation. For some surgeries that have or may have contamination, such as gastrointestinal surgery, a drainage tube will be placed in the human body in advance to play a preventive role. One end of the drainage tube is inserted into the wound where the fistula occurs, and the other end is connected to an external device to drain the secretions, blood, and pus from the fistula through negative pressure, gravity, and other means. However, the early placement of the drainage tube can cause medical side effects to patients who do not have fistulas or abscesses.

[0004] During the drainage process, the drainage tube is likely to be blocked due to the viscosity of pus or blood stasis. During the drainage process, the drainage tube may also be folded and deformed due to factors such as suction, which can cause poor drainage. When the drainage tube is blocked, the existing practice is to pull out the drainage tube and then reinsert a new drainage tube. However, the drainage tube is pre-fixed to the patient's skin with sutures. If the drainage tube is to be pulled out, the sutures that fix the drainage tube must be cut off first, and then the patient is asked to take a deep breath and hold his breath, and the drainage tube is pulled out while the patient holds his breath. After the new drainage tube is inserted, sutures are required to fix the new drainage tube to the patient's skin. It can be seen that reinserting a new drainage tube will increase the patient's treatment pain and increase the risk of secondary infection.

[0005] Therefore, how to avoid medical side effects caused by drainage tubes and how to avoid causing pain to patients when inserting new drainage tubes are key issues that need to be urgently resolved by those skilled in the art. Summary of the invention

[0006] The invention aims to avoid medical side effects caused by drainage tubes and to avoid pain to patients when inserting new drainage tubes.

[0007] A detachable drainage and flushing cannula device, characterized in that it comprises a drainage tube, a flushing tube, an inner cannula and an outer cannula;

[0008] 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 the drainage operation port of the drainage tube and the flushing operation port of the flushing tube both extend from the front end of the inner sleeve;

[0009] The inner sleeve can be inserted into the outer sleeve, and under the action of external force, the inner sleeve can move axially relative to the outer sleeve. Both ends of the outer sleeve are openings, and the drainage operation port and the flushing operation port both extend from the front end opening of the outer sleeve. The outer sleeve can be inserted into the patient's body.

[0010] Preferably, the outer sleeve is a silicone tube, and the inner sleeve is a silicone tube.

[0011] Preferably, the outer sleeve is a transparent tube, and is provided with scales arranged along the axial direction.

[0012] Preferably, the front end of the inner sleeve is a closed end, and the closed end is provided with a drainage tube through hole that is interference fit with the drainage tube, and is also provided with a flushing tube through hole that is interference fit with the flushing tube.

[0013] Preferably, the drainage operation port includes a front port of the drainage tube, and also includes a drainage hole arranged on the drainage tube body, and the drainage holes are multiple, and the multiple drainage holes are spirally arranged around the axis of the drainage tube.

[0014] Preferably, the flushing operation port includes a front port of the flushing pipe, and also includes a flushing hole arranged on the pipe body of the flushing pipe, and the flushing holes are multiple, and the multiple flushing holes are spirally arranged around the axis of the flushing pipe.

[0015] Preferably, the length of the drainage tube extending from the front end of the inner sleeve is shorter than the length of the flushing tube extending from the front end of the inner sleeve.

[0016] Preferably, an emergency drainage hole is provided on the tube body of the inner sleeve and near the front end of the inner sleeve. There are multiple emergency drainage holes, and the multiple emergency drainage holes are arranged in a spiral around the axis of the inner sleeve.

[0017] Preferably, the inner sleeve is longer than the outer sleeve.

[0018] Preferably, the rear end of the flushing tube is used to be inserted into a flushing liquid container, and a flushing regulator is provided on the flushing tube.

[0019] Preferably, the rear end of the drainage tube is inserted into a drainage fluid collection container, and a drainage regulator is provided on the drainage tube.

[0020] Preferably, the drainage fluid collection container is connected to the negative pressure source device through a negative pressure connecting pipe, and a pressure regulator is provided on the negative pressure connecting pipe.

[0021] Preferably, the drainage tube is divided into two parts, and the two parts are plugged together through a pluggable quick connector.

[0022] It can be seen from the above technical solution that the main beneficial effects of the present invention include the following points:

[0023] First, there is no need to insert the drainage tube into the patient's body in advance, thus avoiding medical side effects;

[0024] Second, when external force is applied, the inner sleeve can be extended and retracted along the outer sleeve, so that the drainage tube can be quickly replaced to avoid long-term blockage of the drainage tube. At the same time, the insertion depth of the drainage tube 9 and the flushing tube can be flexibly adjusted to obtain the best flushing and drainage effect;

[0025] Third, the outer sleeve is a transparent tube, and a scale is set on the outer sleeve, and the insertion depth of the drainage tube and the flushing tube can be indicated according to the scale line indicated by the rear end of the inner sleeve, so that the drainage tube 9 and the flushing tube 8 can be accurately returned to their positions when the drainage tube 9 and the flushing tube 8 are accidentally dislocated;

[0026] Fourth, the spirally arranged drainage holes form a multi-section all-round suction area, optimizing the drainage effect. The spirally arranged flushing holes form a flushing vortex, which is conducive to sufficient irrigation;

[0027] Fifth, an emergency drainage hole is provided on the inner sleeve to drain when the drainage tube is blocked, thus avoiding drainage interruption;

[0028] Sixth, the pluggable quick connector can be disconnected when the patient goes to the toilet or undergoes a hospital examination. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the scheme in the embodiment of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the overall structure of a detachable drainage and flushing cannula provided in a specific embodiment of the present invention;

[0031] Figure 2 for Figure 1 A magnified view of middle;

[0032] Figure 3 A schematic diagram of the structure of a drainage tube and a flushing tube provided in a specific embodiment of the present invention;

[0033] Figure 4 A schematic structural diagram of an outer sleeve provided in a specific embodiment of the present invention;

[0034] Figure 5 The figure is a schematic structural diagram of an inner sleeve provided in a specific embodiment of the present invention.

[0035] Among them, 1 is a negative pressure source device, 2 is a flushing liquid container, 3 is a drainage liquid collection 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 tube, 9 is a drainage tube, 10 is a negative pressure connecting tube, 11 is an outer sleeve, 12 is an inner sleeve, 81 is a front port of the flushing tube, 82 is a flushing hole, 91 is a front port of the drainage tube, 92 is a drainage hole, 121 is a drainage tube through hole, 122 is a flushing tube through hole, and 123 is an emergency drainage hole. DETAILED DESCRIPTION

[0036] The invention discloses a detachable drainage flushing sleeve device, which can avoid medical side effects caused by a drainage tube and avoid pain to a patient when a new drainage tube is inserted.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The "front end" mentioned in this article refers to the end close to the patient, and the "rear end" mentioned in this article refers to the end away from the patient.

[0039] Please refer to the attached Figure 1 -Attached Figure 5 .

[0040] The present invention discloses a detachable drainage and flushing sleeve device, comprising: a drainage tube 9, a flushing tube 8, an inner sleeve 12 and an outer sleeve 11. The drainage tube 9 and the flushing tube 8 can be inserted into the inner sleeve 12. After the drainage tube 9 and the flushing tube 8 are inserted into the inner sleeve 12, the drainage tube 9 and the flushing tube 8 are fixed relative to the inner sleeve 12, so that the drainage tube 9, the flushing tube 8 and the inner sleeve 12 are combined into an inner sleeve 12 combined tube. In addition, the drainage operation port of the drainage tube 9 and the flushing operation port of the flushing tube 8 both extend from the front end of the inner sleeve 12, so that the drainage operation port and the flushing operation port can operate smoothly.

[0041] The inner sleeve 12 can be inserted into the outer sleeve 11, and under the action of external force, the inner sleeve 12 can move axially relative to the outer sleeve 11. Both ends of the outer sleeve 11 are open, and 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. In addition, the outer sleeve 11 can be placed in the patient's body.

[0042] When performing a surgery that may be contaminated, such as a gastrointestinal surgery, the outer sleeve 11 is inserted into the patient's body. If a fistula is formed in the patient's body, the inner sleeve 12 equipped with the drainage tube 9 and the flushing tube 8 is inserted into the outer sleeve 11, thereby achieving the placement of the drainage tube 9 and the flushing tube 8. Compared with the technical solution of inserting the drainage tube 9 into the patient's body in advance in the prior art, the present invention does not insert the drainage tube 9 in advance, and only inserts the drainage tube 9 when a fistula appears in the patient's body, thereby effectively avoiding medical side effects.

[0043] The drainage tube 9 is likely to be blocked during the drainage process due to the viscosity of pus or blood stasis. The drainage tube 9 may also be folded and deformed due to factors such as suction during the drainage process, resulting in poor drainage. If the problem of poor drainage occurs, it is only necessary to pull out the inner sleeve 12, then assemble the new drainage tube 9 into the inner sleeve 12, and finally reinsert the inner sleeve 12 into the outer sleeve 11. Compared with the technical solution in the prior art that requires first cutting off the sutures that fix the drainage tube 9, inserting the new drainage tube 9, and then fixing the drainage tube 9 to the patient's skin through sutures, the technical solution in the present invention that does not require cutting off the sutures and only requires pulling out or inserting the inner sleeve 12 can significantly alleviate the patient's pain, and can significantly improve the efficiency of inserting the new drainage tube 9, thereby reducing the risk of infection in the patient.

[0044] It should be noted that if the drainage tube 9 is fixedly connected to the inner sleeve 12 by interference fit, then when the drainage tube 9 is blocked, the drainage tube 9 can be simply pulled out, replaced with a new drainage tube 9, and assembled into the inner sleeve 12 to achieve the insertion of the new drainage tube 9.

[0045] It should also be noted that for fistulas with large cavities or narrow cavities, the specific depth of the fistula is unknown. After the drainage tube 9 and the flushing tube 8 are placed, the flushing and drainage are often not thorough due to insufficient placement depth. In this case, it is necessary to increase the placement depth of the drainage tube 9 and the flushing tube 8. In the prior art, if the placement depth of the drainage tube 9 and the flushing tube 8 is to be increased, the sutures used to fix the flushing tube 8 and the drainage tube 9 must first be released. After the flushing tube 8 and the drainage tube 9 are placed in place, the flushing tube 8 and the drainage tube 9 must be fixed to the patient's skin through sutures. This operation method not only increases the patient's pain, but also increases the risk of infection for the patient. In the present invention, if the placement depth of the drainage tube 9 and the flushing tube 8 is to be changed, it is only necessary to apply an external force to the inner sleeve 12 so that the inner sleeve 12 moves along the axial direction of the outer sleeve 11. If the insertion depth of the drainage tube 9 and the flushing tube 8 is to be increased, the inner sleeve 12 is driven to move toward the front end of the outer sleeve 11; if the insertion depth of the drainage tube 9 and the flushing tube 8 is to be reduced, the inner sleeve 12 is driven to move toward the rear end of the outer sleeve 11. It should be noted that since the drainage tube 9 and the flushing tube 8 are relatively fixed to the inner sleeve 12, the movement amount of the inner sleeve 12 is also the movement amount of the drainage tube 9 and the flushing tube 8.

[0046] In addition, since the inner cannula 12 is inserted into the patient's body, the inner cannula 12 forms a certain attraction to the surrounding tissues. Under the condition of sufficient flushing, the fistula tissues are constantly fitted due to the suction force, which promotes the filling of granulation tissue and fibrous tissue in the fistula and promotes the healing process. At the same time, the inner cannula 12 is gradually pulled out to allow the fistula tissues to continue to repair and heal, thereby greatly shortening the patient's hospitalization time.

[0047] In the present invention, the material of the outer sleeve 11 is preferably silicone, that is, the outer sleeve 11 is a silicone tube. The material of the inner sleeve 12 is preferably silicone, and the inner sleeve 12 is also a silicone tube. In addition, the present invention limits the outer diameter of the inner sleeve 12 to be 0.1 mm smaller than the inner diameter of the outer sleeve 11. 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 there is no external force, and the inner sleeve 12 is almost sealed with the outer sleeve 11, or the gap between the inner sleeve 12 and the outer sleeve 11 is very small. If it is necessary to adjust and replace the inner sleeve 12 or adjust the insertion depth of the drainage tube 9 and the flushing tube 8, an external force can be applied to the inner sleeve 12, so that the inner sleeve 12 moves axially in the outer sleeve 11.

[0048] In a specific embodiment of the present invention, the outer diameter of the inner sleeve 12 is designed to be 9.5 mm, and the inner diameter is designed to be 8 mm, and the outer diameter of the outer sleeve 11 is designed to be 11.5 mm, and the inner diameter is designed to be 9.6 mm.

[0049] The outer sleeve 11 in the present invention is also a transparent tube, and a scale arranged along the axial direction of the outer sleeve 11 is provided on the outer sleeve 11. Through the outer sleeve 11, the axial movement of the inner sleeve 12 relative to the outer sleeve 11 can be observed. Specifically, the axial movement of the inner sleeve 12 can be judged by the scale line indicated by the rear end of the inner sleeve 12.

[0050] After the inner sleeve 12, the drainage tube 9 and the flushing tube 8 are inserted into the patient's body, the scale value corresponding to the rear end of the inner sleeve 12 is recorded. When the drainage tube 9 or the flushing tube 8 is dislodged due to accidental traction or other factors, the drainage tube 9 and the flushing tube 8 can be reassembled into the inner sleeve 12, and then the inner sleeve 12 can be inserted according to the recorded scale value, so that the drainage tube 9 and the flushing tube 8 can be inserted to the initial depth to regain the best flushing and drainage effect.

[0051] It should be noted that the length of the flushing tube 8 and the drainage tube 9 extending from the front end of the inner sleeve 12 is usually a fixed value, so that after the rear end of the inner sleeve 12 is inserted to the recorded scale value, the insertion depth of the flushing tube 8 and the drainage tube 9 is also the initial insertion depth.

[0052] Regarding the specific assembly relationship between the drainage tube 9 and the flushing tube 8 and the inner sleeve 12: In the present invention, the front end of the inner sleeve 12 is set as a closed end, and the closed end is used to seal the front end opening of the inner sleeve 12. A drainage tube through hole 121 and a flushing tube through hole 122 are provided at the closed end of the inner sleeve 12. The drainage tube 9 is interference fit with the drainage tube through hole 121. The flushing tube 8 is interference fit with the flushing tube through hole 122. In this way, after the drainage tube 9 and the flushing tube 8 are assembled into the inner sleeve 12, the interference fit relationship can keep the drainage tube 9 and the flushing tube 8 fixed, thereby ensuring that the drainage tube 9 and the flushing tube 8 will not be misaligned and squeezed due to factors such as water flow and suction, thereby ensuring the smoothness of drainage and flushing. In addition, the interference fit relationship can also play a sealing role, thereby preventing the exuded liquid from flowing out through the gap between the inner sleeve 12 and the outer sleeve 11.

[0053] Next, the drainage operation port and the flushing operation port are introduced: the drainage operation port in the present invention includes a front port 91 of the drainage tube 9, and also includes a drainage hole 92 arranged on the body of the drainage tube 9. There are multiple drainage holes 92, and the multiple drainage holes 92 are spirally arranged around the axis of the drainage tube 9. And along the spiral trajectory, the angle between two adjacent drainage holes 92 in space is 120°. Similar to the drainage operation port, the flushing operation port includes a front port 81 of the flushing tube 8, and also includes a flushing hole 82 arranged on the body of the flushing tube 8. There are multiple flushing holes 82, and the multiple flushing holes 82 are spirally arranged around the axis of the flushing tube 8. And along the spiral trajectory, the angle between two adjacent flushing holes 82 in space is 120°.

[0054] Furthermore, the present invention starts to drill the drainage hole 92 about 150 mm from the front end 91 of the drainage tube 9 to form a large area drainage. The present invention starts to drill the flushing hole 82 about 50 mm from the front end 81 of the flushing tube 8 to make the flushing hole 82 closer to the fistula wound surface.

[0055] The drainage holes 92 arranged in a spiral on the drainage tube 9 form a multi-section all-round suction area, and the suction area of ​​the drainage is larger and more uniform. In addition, the drainage holes 92 arranged in a spiral on the drainage tube 9 can form a vortex in the fistula cavity of the fistula when the airflow is sucked, thereby facilitating sufficient drainage. The flushing holes 82 arranged in a spiral on the flushing tube 8 can form a vortex in the fistula cavity of the fistula when flushing, thereby facilitating sufficient irrigation.

[0056] Furthermore, the present invention limits the length of the drainage tube 9 extending from the front end of the inner sleeve 12 to be shorter than the length of the flushing tube 8 extending from the front end of the inner sleeve 12. In other words, the flushing tube 8 is closer to the fistula wound surface than the drainage tube 9. This arrangement ensures that the flushing liquid flowing out of the flushing tube 8 will not be sucked by the drainage operation port of the drainage tube 9, thereby maintaining a sufficient flushing time, and on the other hand, the dirt flushed by the flushing liquid is collected and then sucked by the drainage operation port, thereby ensuring that the dirt is fully sucked.

[0057] In a specific embodiment of the present invention, the extension length of the flushing tube 8 is limited to 3 cm longer than the extension length of the drainage tube 9. The outer diameters of the drainage hole 92 and the flushing hole 82 are both 3.5 mm, and the inner diameters are both 2.5 mm. The diameters of the drainage hole 92 and the flushing hole are both 1.5 mm.

[0058] The present invention provides an emergency drainage hole 123 at the front end of the tube body of the inner sleeve 12. The emergency drainage holes 123 are multiple and are arranged in a spiral around the axis of the inner sleeve 12. When the drainage tube 9 is blocked, dirt can be discharged from the body through the emergency drainage holes 123, thereby avoiding drainage interruption and further reducing the risk of infection. In a specific embodiment of the present invention, the aperture of the emergency drainage hole 123 is designed to be 2.5 mm.

[0059] Furthermore, the present invention limits the length of the inner sleeve 12 to be longer than the length of the outer sleeve 11, so that even if the rear end of the inner sleeve 12 is located at the zero scale line of the outer sleeve 11, the front end of the inner sleeve 12 will extend outside the outer sleeve 11, thus ensuring that the emergency drainage hole 123 is located outside the outer sleeve 11, thereby ensuring that the emergency drainage hole 123 will always play the role of emergency drainage. In a specific embodiment of the present invention, the length of the inner sleeve 12 is designed to be 270 mm, and the length of the outer sleeve 11 is designed to be 250 mm.

[0060] The front end of the flushing tube 8 in the present invention is used to be placed in the patient's body and pointed to the fistula wound surface. The rear end of the flushing tube 8 is used to be inserted into the flushing liquid container 2. And a flushing regulator 4 is provided on the flushing tube 8. The flushing regulator 4 is used to adjust the flow rate of the flushing liquid.

[0061] The front end of the drainage tube 9 is used to be inserted into the patient's body and pointed to the fistula wound surface. The rear end of the drainage tube 9 is used to be inserted into the drainage fluid collection container 3. In addition, a drainage regulator 6 is provided on the drainage tube 9, and the drainage regulator 6 is used to adjust the flow rate of the drainage fluid.

[0062] The drainage liquid collection container 3 is connected to the negative pressure source device 1 through the negative pressure connecting pipe 10. A pressure regulator 5 is provided on the negative pressure connecting pipe 10. The drainage operation port forms suction for the waste through the negative pressure source device 1.

[0063] The present invention adjusts the negative pressure intensity by adjusting the pressure regulator 5, adjusts the drainage flow rate by the drainage regulator 6, and adjusts the flushing liquid flow rate by the flushing regulator 4, so as to obtain the best flushing and drainage effects.

[0064] In addition, the drainage tube 9 in the present invention is divided into two parts, and the two parts are connected together through a pluggable quick connector 7.

[0065] In the prior art, when a patient goes to the toilet or undergoes a medical examination, the patient needs to carry the negative pressure source device 1 with him / her. In the present invention, the pressure regulator 5, the drainage regulator 6 and the flushing regulator 4 are turned off at the same time, and then the pluggable quick connector 7 is disconnected, so that the drainage cannula can be separated from the negative pressure source device 1, and the patient can freely change the body position to minimize the body burden.

[0066] In summary, the main beneficial effects of the present invention include the following:

[0067] First, there is no need to insert the drainage tube 9 into the patient's body in advance, thereby avoiding medical side effects;

[0068] Second, when an external force is applied, the inner sleeve 12 can be extended and retracted along the outer sleeve 11, so that the drainage tube 9 can be quickly replaced to avoid long-term blockage of the drainage tube 9. At the same time, the insertion depth of the drainage tube 9 and the flushing tube 8 can be flexibly adjusted to obtain the best flushing and drainage effect;

[0069] Third, the outer sleeve 11 is a transparent tube, and a scale is set on the outer sleeve 11, and the insertion depth of the drainage tube 9 and the flushing tube 8 can be indicated according to the scale line indicated by the rear end of the inner sleeve 12, so that the drainage tube 9 and the flushing tube 8 can be accurately returned to their positions when the drainage tube 9 and the flushing tube 8 are accidentally dislodged;

[0070] Fourth, the spirally arranged drainage holes 92 form a multi-section all-round suction area, optimizing the drainage effect. The spirally arranged flushing holes 82 form a flushing vortex, which is conducive to sufficient irrigation;

[0071] Fifth, an emergency drainage hole 123 is provided on the inner sleeve 12 to drain when the drainage tube 9 is blocked, thereby avoiding drainage interruption;

[0072] Sixth, when the patient goes to the toilet or undergoes a hospital examination, the pluggable quick connector 7 can be disconnected.

[0073] The embodiments of clinical application of the detachable drainage and flushing cannula device of the present invention are as follows:

[0074] 1. Patient Zhang, male, 58 years old, developed duodenal stump fistula after gastric cancer surgery, and had symptoms such as abdominal pain, nausea, fever, etc. The fistula healed smoothly after 3 days of antibiotic treatment using the detachable drainage and flushing cannula device of the present invention.

[0075] 2. Patient Li, female, 62 years old, had fistula after rectal cancer surgery. After using the detachable drainage and flushing cannula device of the present invention for 2 days, the drainage tube 9 was blocked due to fecal masses, and the drainage was not smooth. After cutting off the drainage and negative pressure source equipment, the drainage tube 9 was pulled out and quickly replaced. After 6 days, the patient's exudate was drained and the fistula was completely healed.

[0076] 3. Patient Zhao, male, 68 years old, had gastrointestinal anastomotic fistula after gastric cancer surgery. After the detachable drainage and flushing cannula of the present invention was placed, the drainage tube 9 fell off due to an accident. The medical staff quickly reset it according to the recorded insertion depth, and the fistula was completely healed after 8 days.

[0077] Finally, it should be noted that the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0078] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0079] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A detachable drainage and flushing cannula, characterized in that: It includes a drainage tube, an irrigation 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 the drainage operation port of the drainage tube and the flushing operation port of the flushing tube both extend from the front end of the inner sleeve; The inner sleeve can be inserted into the outer sleeve, and under the action of external force, the inner sleeve can move axially relative to the outer sleeve, both ends of the outer sleeve are openings, the drainage operation port and the flushing operation port both extend from the front end opening of the outer sleeve, and the outer sleeve can be placed in the patient's body; The outer sleeve is a transparent tube, and is provided with scales arranged along the axial direction; The drainage operation port includes a front port of the drainage tube, and also includes a drainage hole arranged on the body of the drainage tube, wherein the drainage hole is multiple and the multiple drainage holes are arranged spirally around the axis of the drainage tube; The flushing operation port includes a front port of the flushing pipe, and also includes a flushing hole arranged on the flushing pipe body, wherein the flushing holes are multiple and the multiple flushing holes are spirally arranged around the axis of the flushing pipe; An emergency drainage hole is arranged on the tube body of the inner sleeve and near the front end of the inner sleeve. There are multiple emergency drainage holes, and the multiple emergency drainage holes are arranged in a spiral around the axis of the inner sleeve.

2. The detachable drainage and flushing cannula according to claim 1, characterized in that: The outer sleeve is a silicone tube, and the inner sleeve is a silicone tube.

3. The detachable drainage and flushing cannula according to claim 1, characterized in that: The front end of the inner sleeve is a closed end, and the closed end is provided with a drainage tube through hole that is interference-fitted with the drainage tube, and is also provided with a flushing tube through hole that is interference-fitted with the flushing tube.

4. The detachable drainage and flushing cannula according to claim 1, characterized in that: The length of the drainage tube extending out of the front end of the inner sleeve is shorter than the length of the flushing tube extending out of the front end of the inner sleeve.

5. The detachable drainage and flushing cannula device according to claim 1, characterized in that: The inner sleeve is longer than the outer sleeve.

6. The detachable drainage and flushing cannula device according to claim 1, characterized in that: The rear end of the flushing tube is used to be inserted into a flushing liquid container, and a flushing regulator is arranged on the flushing tube.

7. The detachable drainage and flushing cannula device according to claim 1, characterized in that: The rear end of the drainage tube is inserted into a drainage liquid collection container, and a drainage regulator is arranged on the drainage tube.

8. The detachable drainage and flushing cannula device according to claim 7, characterized in that: The drainage fluid collection container is connected to the negative pressure source device through a negative pressure connecting pipe, and a pressure regulator is arranged on the negative pressure connecting pipe.

9. The detachable drainage and flushing cannula device according to claim 7, characterized in that: The drainage tube is divided into two parts, and the two parts are plugged together through a pluggable quick connector.

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