WO2020124430A1

WO2020124430A1 - Drainage tube capable of continuous perfusion

Info

Publication number: WO2020124430A1
Application number: PCT/CN2018/122070
Authority: WO
Inventors: 汪郁卉; 张世忠; 杜晨晓; 李午阳
Original assignee: 深圳市擎源医疗器械有限公司
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-06-25

Abstract

A drainage tube capable of continuous perfusion, comprising a tube body (10) and a rear cannula that is communicated with the tube body (10) and located at the rear end of the tube body (10), wherein a drainage cavity (11) and a perfusion cavity (12) isolated from each other are provided in the tube body (10) along the length direction thereof; the rear cannula comprises a first branch tube (20) that is communicated with the drainage cavity (11), and a second branch tube (30) that is communicated with the perfusion cavity (12); the front end of the tube body (10) is provided with multiple liquid outlets (40) that are communicated with the perfusion cavity (12); the side wall of the tube body (10) is further provided with a drainage opening (13) that is communicated with the drainage cavity (11); a distance exists between the drainage opening (13) and the multiple liquid outlets (40). In the present invention, compared with the drainage tube having a single tube and multiple sub tubes in the prior art, the drainage cavity (11) and the perfusion cavity (12) isolated from each other are provided in the tube body (10) so as to achieve independent drainage and perfusion; under the condition of an equivalent diameter, a larger drainage cavity (11) can be provided, and thus, a drainage rate is improved, and the risk of blocking the tube is reduced; the drainage opening (13) is provided at a position having a certain distance from the liquid outlet (40), so that a drug is continuously perfused and fully reacts with hematoma, and it helps to exert the efficacy of the drug.

Description

Sustainable perfusion drainage tube

Technical field

The invention belongs to the technical field of medical devices, and more specifically, relates to a sustainable perfusion drainage tube.

Background technique

In today's society, people's unhealthy lifestyle, increased stress in life and lack of exercise, etc., have led to hypertensive cerebral hemorrhage has become a common disease and frequent incidence. The disease has three characteristics: high morbidity, high mortality, and high disability. And hypertensive cerebral hemorrhage, about 80% of its intracranial hemorrhage occurs in the basal ganglia area, and the basal ganglia area is the area where important nerve central conductive fibers pass through. Therefore, hypertensive cerebral hemorrhage often causes the patient to die or die. Therefore, the effective treatment of hypertensive intracerebral hemorrhage with reasonable medical equipment is of great significance.

In the past, craniotomy was used to treat hypertensive cerebral hemorrhage in clinical practice. Because of the need for craniotomy, the brain tissue will be damaged to varying degrees while removing the hematoma in the brain. In recent years, the clinical use of minimally invasive surgical treatment, that is, the use of craniocerebral drainage tube for intracranial hematoma puncture and drainage, this method can not only quickly drain out of the brain hematoma, but also will not cause additional damage to brain tissue And, it has the advantages of fast recovery, low cost, and easy recovery of brain function of patients. Therefore, this method has been widely used.

With the development of surgical methods and drainage surgical instruments, single-tube single-lumen drainage tubes have been difficult to meet the patients' needs for drainage effects. There are single-tube multi-lumen and single-tube multiple sub-tubes and other drainage tubes. If there is a drainage tube, multiple sub-tubes are provided in the main tube, and the sub-tube telescopic holes are provided in the front of the main tube, so that the sub-tubes can be extended or Retracted into the main tube, when the front of the sub tube extends out of the main tube, multi-point drug drainage can be achieved, thereby accelerating the dissolution and drainage speed of blood clots, thereby quickly releasing the hematoma from pressing the main functional structure and reducing the hypertensive brain Hazards caused by bleeding disorders.

However, since such a drainage tube has multiple sub-tubes for multi-point administration, the diameter of the drainage cavity is inevitably sacrificed when the outer diameter is the same, resulting in a decrease in the drainage rate and increasing the risk of blockage. At the same time, the injection of the drug requires a certain reaction time with the hematoma. The drug is discharged from the drainage port before fully reacting with the blood clot, which affects the dissolution and drainage rate of the blood clot, and multiple manual administrations will bring the risk of infection .

technical problem

The purpose of the embodiments of the present invention is as follows: In the first aspect, a sustainable perfusion drainage tube is provided to solve the technical problems of the drainage tube with a small drainage cavity and a low drainage rate in the prior art.

Technical solution

To solve the above technical problems, the technical solutions adopted by the embodiments of the present invention are:

In a first aspect, a medical drainage tube is provided, including a tube body and a rear cannula communicating with the tube body and located at the rear end of the tube body, the tube body having mutually isolated drainage cavities and perfusion along its length Cavity, the rear cannula includes a first branch tube communicating with the drainage cavity and a second branch tube communicating with the perfusion cavity, the front end of the tube body is provided with a plurality of outlets communicating with the perfusion cavity For the liquid port, the side wall of the tube body is further provided with a drainage port communicating with the drainage cavity, and there is a gap between the drainage port and the plurality of liquid outlets.

Beneficial effect

Compared with the prior art, the beneficial effect of the sustainable perfusion drainage tube provided by the embodiments of the present invention is that, compared with the drainage tube of the single tube and multiple sub-tubes in the prior art, a mutually isolated drainage cavity is provided in the tube body and Perfusion chamber, to achieve independent drainage and perfusion, it can have a larger drainage chamber under the same diameter, improve the drainage rate, reduce the risk of tube blockage, and have more drainage chambers than existing drainage pipes when the drainage chamber has a similar cross-section The small diameter can reduce the compression of brain tissue and reduce trauma; at the front end of the tube body, multiple points of drug delivery are achieved through multiple liquid outlets that communicate with the perfusion cavity, increasing the contact area between the drug and the hematoma, and efficiently dissolving the hematoma, while The continuous perfusion through the perfusion cavity increases the contact time between the drug and the hematoma compared with one-time administration. The reaction is conducive to exerting the drug effect, improving the dissolution rate, shortening the drainage tube retention time, reducing the risk of puncture infection, and has a positive significance for the prognosis.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present invention, the drawings required in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the invention. For some embodiments, for those of ordinary skill in the art, without paying any creative work, other drawings may be obtained based on these drawings.

FIG. 1 is a schematic structural diagram of a sustainable perfusion provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second sustainable infusion provided by an embodiment of the present invention;

Among them, the reference signs in the figure:

10-tube; 11-drainage cavity; 12-perfusion cavity; 13-drainage port; 14-balloon cavity; 15-positioning balloon; 20-first branch tube; 30-second branch tube; 31-heparin cap ; 40- liquid outlet; 41- first liquid outlet; 42- second liquid outlet; 50- pipe joint; 60- third branch pipe; 61- one-way valve; 62- indicating balloon.

Embodiments of the invention

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

It should be noted that when a component is referred to as being “fixed” or “disposed on” another component, it can be directly on the other component or indirectly on the other component. When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

It should also be noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, and “ The azimuth or positional relationship indicated by "left", "right", etc. is based on the azimuth or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific The structure and operation of a specific position are used in the figure, therefore, the terms used to describe the positional relationship in the drawings are for illustrative purposes only, and should not be construed as a limitation of this patent. For those of ordinary skill in the art, it can be based on specific circumstances Understand the specific meaning of the above terms.

In addition, the terms "first" and "second" are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise specifically limited.

In order to explain the technical solution described in the present invention, the implementation of a sustainable perfusion drainage tube provided by the present invention will be described in detail through specific embodiments with reference to specific drawings.

Example one

Referring to FIG. 1, a sustainable perfusion drainage tube provided by Embodiment 1 of the present invention includes a tube body 10 and a rear cannula communicating with the tube body 10 and located at the rear end of the tube body 10, and the tube body 10 is isolated from each other along its length The drainage cavity 11 and the perfusion cavity 12, the rear cannula includes a first branch tube 20 communicating with the drainage cavity 11 and a second branch tube 30 communicating with the perfusion cavity 12, the front end of the tube body 10 is provided with a plurality of communicating with the perfusion cavity 12 In the liquid outlet 40, the side wall of the tube body 10 is further provided with a drainage port 13 communicating with the drainage chamber 11, and there is a gap between the drainage port 13 and the plurality of liquid outlets 40.

In the embodiment of the present invention, compared with the drainage tube of a single tube and multiple sub-tubes in the prior art, a drainage cavity 11 and a perfusion cavity 12 that are isolated from each other are provided in the tube body 10 to achieve independent drainage and perfusion, which can be at the same diameter It has a larger drainage cavity 11 under the condition of increasing the drainage rate and reducing the risk of clogging. When the drainage cavity 11 has a comparable cross-section, it has a smaller diameter than the existing drainage tube, which can reduce the crowding of brain tissue. Pressure to reduce trauma; at the front end of the tube body 10, multiple points of drug delivery are realized through multiple liquid outlets 40 communicating with the perfusion chamber 12, increasing the contact area between the drug and the hematoma, efficiently dissolving the hematoma, and at the same time, continuous perfusion through the perfusion chamber 12 Compared with one-time administration, the contact time between the drug and the hematoma is increased, which is more effective in dissolving the hematoma and is beneficial to lead out of the body. , Improve the dissolution rate, shorten the drainage tube retention time, reduce the risk of puncture infection, and have a positive significance for the prognosis.

Further, in this embodiment, there is a certain distance between the drainage port 13 and the closest liquid outlet 40, and the distance may be 15 mm-20 mm. Through the above-mentioned setting of the position of the drainage port 13, the drug enters the hematoma site and has sufficient action time with the hematoma to achieve the purpose of dissolving the hematoma, and then the drainage port 13 is led out of the body.

Specifically, the plurality of liquid outlets 40 include a plurality of first liquid outlets 41 located at the front end of the pipe body 10 and a plurality of second liquid outlets 42 located at the front end side wall of the pipe body 10. The plurality of first liquid outlets 41 are distributed in a divergent manner; the plurality of second liquid outlets 42 are distributed at multiple points along the length of the front end, and are evenly distributed along the circumferential direction. The plurality of first liquid outlets 41 and the plurality of second liquid outlets 42 continuously administer multiple parts of the hematoma from multiple directions, thereby improving the efficiency of dissolution and drainage of the hematoma.

Further, the end of the first branch pipe 20 is also provided with a luer connector (not shown in the figure) for connecting an external conduit. The first branch tube 20 is connected to an external drainage line through a luer connector, and collects the hematoma into a sterile drainage bag.

Further, the end of the second branch tube 30 is also provided with a heparin cap 31. The second branch tube 30 is connected to the infusion device through the heparin cap 31, and the medicine of the infusion device is continuously delivered to the hematoma site through the infusion chamber 12 and the liquid outlet 40, thereby improving the hemolysis dissolution efficiency.

In this embodiment, there is only one drain port 13. Of course, there may be two or more drain ports 13. When there are two or more drainage ports 13, a plurality of drainage ports 13 are arranged at intervals along the length direction of the tube body 10.

In this embodiment, the first branch pipe 20 and the second branch pipe 30 are connected together by a pipe joint 50. The first branch pipe 20 and the second branch pipe 30 are effectively fixed by the pipe joint 50, which is convenient for operation during the operation.

Example 2

Referring to FIG. 2, the sustainable perfusion drainage tube provided in the embodiment of the present invention is different from the sustainable perfusion drainage tube in the first embodiment in that a balloon cavity 14 is further provided in the tube body 10. The balloon cavity 14 and the drainage cavity 11. The perfusion chamber 12 is arranged in parallel, and a positioning balloon 15 for communicating with the balloon cavity 14 is also provided at the front end of the tube body 10, and the rear cannula further includes a third branch tube 60 communicating with the balloon cavity 14 The third branch pipe 60 is provided with a check valve 61.

The drainage tube is generally left for 5-7 days according to the hematoma removal situation. The care during the drainage process is particularly critical to prevent the drainage tube from coming out. In this embodiment, after the drainage tube is punctured in place, an appropriate amount of saline is injected into the one-way valve 61 with a syringe to make the saline pass through the balloon cavity 14 to reach the positioning balloon 15 to inflate the positioning balloon 15 to drain The tube is fixed in the sulcus of the brain tissue, so as to fix the drainage tube, avoid the drainage tube from falling out, and reduce the risk of infection or reintubation.

Specifically, the diameter of the positioning balloon 15 after the liquid is injected is in the range of 15mm-20mm.

Further, an indicator balloon 62 is also provided on the third branch tube 60, and the indicator balloon 62 communicates with the positioning balloon 15 to monitor whether the positioning balloon 15 is leaking, etc., to reduce the risk of the drainage tube coming out.

In this embodiment, in order to facilitate fixation, the first branch pipe 20, the second branch pipe 30, and the third branch pipe 60 are connected together by a pipe joint 50.

In addition, in this embodiment, there are two drainage ports 13, and the two drainage ports 13 are arranged at intervals along the longitudinal direction of the tube body 10.

The other structure of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

A sustainable perfusion drainage tube includes a tube body and a rear cannula communicating with the tube body and located at the rear end of the tube body, characterized in that the tube body has mutually isolated drainage chambers and perfusion along its length Cavity, the rear cannula includes a first branch tube communicating with the drainage cavity and a second branch tube communicating with the perfusion cavity, the front end of the tube body is provided with a plurality of outlets communicating with the perfusion cavity For the liquid port, the side wall of the tube body is further provided with a drainage port communicating with the drainage cavity, and there is a gap between the drainage port and the plurality of liquid outlets.
The sustainable perfusion drainage tube according to claim 1, wherein the distance between the drainage port and the closest liquid outlet is 15mm-20mm.
The sustainable perfusion drainage tube according to claim 1, wherein the plurality of liquid outlets include a plurality of first liquid outlets at the front end of the tube body and the front end of the tube body A plurality of second liquid outlets on the side wall.
The sustainable perfusion drainage tube according to claim 3, wherein a plurality of the first liquid outlets are distributed in a divergent manner; a plurality of the second liquid outlets are distributed at multiple points along the length of the tube body , And evenly distributed along the circumference.
The sustainable perfusion drainage tube according to claim 1, wherein the end of the first branch tube is further provided with a luer connector for connecting an external catheter.
The sustainable perfusion drainage tube according to claim 1, wherein the end of the second branch tube is further provided with a heparin cap.
The sustainable perfusion drainage tube according to claim 1, wherein there are at least two drainage ports, and at least two of the drainage ports are arranged at intervals along the length direction of the tube body.
The sustainable perfusion drainage tube according to any one of claims 1 to 7, further comprising a balloon cavity provided in the tube body and parallel to the drainage cavity and the perfusion cavity, the tube The front end of the body is also provided with a positioning balloon communicating with the balloon cavity for injecting liquid, and the rear cannula further includes a third branch tube communicating with the balloon cavity, the third branch tube is provided with There are indicator air bags and check valves.
The sustainable perfusion drainage tube according to claim 8, wherein the third branch tube is further provided with a transparent indicator balloon, and the indicator balloon is in communication with the positioning balloon.
The sustainable perfusion drainage tube according to claim 8, wherein the first branch tube, the second branch tube, and the third branch tube are connected into one body through a pipe joint.