CN103495257A - Medical drainage tube capable of avoiding iatrogenic contamination - Google Patents

Abstract

The invention discloses a medical drainage tube capable of avoiding iatrogenic contamination, and belongs to the field of medical instruments. The medical drainage tube capable of avoiding the iatrogenic contamination comprises a main drainage tube, wherein a liquid inlet is formed in the front end of the main drainage tube, an injection tube is arranged on the front section, close to the liquid inlet, of the main drainage tube side by side, and the drainage tube and the injection tube are of an integrated structure and not communicated mutually. The injection tube and the main drainage tube are arranged side by side and not communicated mutually, so that the situation that drainage substances are reversely pushed to the drainage portion to cause contamination is avoided when drugs are administrated to the drainage portion of a patient. In addition, the injection tube comprises the tube wall, the tube wall is made of elastic material and form an elastic tube cavity with clearance gaps sealed, so that drainage liquid is prevented from entering the injection tube and contaminating the injection tube. The medical drainage tube capable of avoiding the iatrogenic contamination solves the problems that in the prior art, drainage and drug administrating can not be carried out simultaneously, and an existing drainage tube causes the iatrogenic contamination in the drug administrating process.

Description

Medical drainage tube that can avoid iatrogenic pollution

This application is a divisional application with application number 201210365985.9, application date of September 27, 2012, and the title of the invention is medical drainage tube.

technical field

The invention relates to a medical device, in particular to a medical drainage tube which can be used for both drainage and drug delivery to the effusion site of a patient and can avoid iatrogenic pollution.

Background technique

The purpose of surgical drainage is to guide the pus, blood, and fluid accumulated between human tissues or body cavities to the outside of the body, and has the functions of preventing postoperative infection and promoting wound healing. There are many types of surgical drainage tubes used clinically, such as urinary catheters, pleural effusion drainage tubes, and peritoneal effusion drainage tubes.

At present, many technologies related to drainage tubes have been disclosed in Chinese patent documents, such as ZL201120294660.7 (drainage tube), ZL03255477.X (drainage tube), ZL200810232986.X (medical drainage tube), ZL200920020649.4 (chest drainage tube ), ZL201120125482.5 (a drainage tube), etc. It is not limited to the medical drainage tube of the above example and has the following defects: the one is that the drug cannot be administered to the drainage place while the drainage is being performed; The drug tubes share the same passage, so there is pollution; the third is that although there is another technology for setting up a drug-introducing tube on the drainage tube, the space in the drug-introducing tube cannot be sealed, and there is also the problem of iatrogenic pollution.

In view of the shortcomings of the above-mentioned medical drainage tube, the present inventor has made a creative invention on the existing drainage tube technology, and then solved the shortcomings of the prior art.

Contents of the invention

In view of this, the present invention provides a medical drainage tube that can avoid iatrogenic pollution. The medical drainage tube solves the problems of the prior art by setting injection tubes that are parallel to the main drainage tube at the front end of the main drainage tube and are not connected to each other. Drainage and drug administration can not be carried out at the same time and the problem of iatrogenic pollution exists in drug administration.

The present invention solves the above technical problems by the following technical means:

The medical drainage tube that can avoid iatrogenic pollution of the present invention includes a main drainage tube, the front end of the main drainage tube is provided with a liquid inlet, and the front end of the main drainage tube near the liquid inlet is provided with an injection tube in parallel, and the drainage The tube and the injection tube are integrally structured, the injection tube and the main drainage tube are not connected to each other, the injection tube includes a tube wall, and the tube wall is made of elastic material to form a gap-sealed elastic lumen.

Further, the tail end of the injection tube is provided with an injection port for connecting a syringe, and the injection port is provided with a sealing plug for sealing the injection port.

Further, the main drainage tube is also provided with an auxiliary drainage tube, and the front part of the auxiliary drainage tube shares the same drainage channel with the main drainage tube.

Further, the tail end of the auxiliary drainage tube is provided with a suction port for connecting a suction device, and the suction port is provided with a cover for sealing the suction port.

Further, the main drainage tube is provided with a valve, and the valve is a three-way valve set at the connection between the auxiliary drainage tube and the main drainage tube or a flow-limiting valve set at the tail of the main drainage tube.

Further, a scale is marked on the outer wall of the front section of the main drainage tube.

Further, a plurality of liquid inlets are provided on the outer wall of the front end of the main drainage tube.

Beneficial effects of the present invention: the medical drainage tube that can avoid iatrogenic pollution of the present invention includes a main drainage tube, the front end of the main drainage tube is provided with a liquid inlet, and the front end of the main drainage tube is juxtaposed near the liquid inlet An injection tube is provided, and the drainage tube and the injection tube are integrally structured, and the injection tube and the main drainage tube are not communicated with each other. An injection tube is arranged at the front section of the main drainage tube for administering medicine to the drainage site of the patient. The injection tube and the main drainage tube are arranged side by side and are not connected to each other so as to prevent the drainage material from being pushed back to the drainage site of the patient to cause pollution when administering medicine to the drainage site of the patient.

In addition, the injection tube includes a tube wall, the tube wall is made of elastic material and forms a gap-sealed elastic lumen, so as to prevent the drainage fluid from entering the injection tube and polluting the injection tube, passing through the sealed gap in the elastic lumen, The liquid with a certain pressure can pass through the elastic lumen.

Further, a scale is marked on the outer wall of the front section of the main drainage tube to facilitate doctors to identify the depth of the drainage tube entering the patient's body, thereby ensuring the accuracy of the drainage site.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a structural schematic diagram of the gap seal between the elastic filling body and the injection tube of the present invention;

Fig. 3 is a structural schematic diagram of a sealing gap provided on the elastic filling body of the present invention;

Fig. 4 is a schematic structural view of the elastic lumen of the injection tube of the present invention made of elastic material and forming a gap seal

Fig. 5 is a schematic diagram of the overall structure of a medical drainage tube with an elastic lumen for the injection tube.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings, as shown in Figure 1: the medical drainage tube that can avoid iatrogenic pollution in this embodiment includes a main drainage tube 1, and the front end of the main drainage tube 1 is provided with a liquid inlet Inlet 11, the front section of the main drainage tube 1 near the liquid inlet 11 is provided side by side with an injection tube 3, the drainage tube 1 and the injection tube 3 are integrally structured, and the injection tube 3 and the main drainage tube 1 are not connected to each other. The tail end of the injection tube 3 is provided with an injection port 5 for connecting a syringe, and the injection port 5 is provided with a sealing plug 6 for sealing the injection port 5 . The main drainage tube 1 and the injection tube 3 in this embodiment are made of medical rubber, medical silicone or medical plastic. An injection tube 3 is provided on the front section of the main drainage tube 1 close to the liquid inlet 11 for administering medicine to the patient's drainage site. The injection tube 3 and the main drainage tube 1 are arranged side by side to form an integral structure that is not connected to each other, so that when administering medicine to the patient's drainage site, the drainage material is prevented from being pushed back to the drainage site to cause contamination.

As a further improvement of the above technical solution, as shown in FIG. 4 , the injection tube 3 includes a tube wall 10b made of elastic material and forms a gap-tight elastic lumen. The gap-sealed elastic lumen allows fluid with corresponding pressure to pass through the lumen gap. The tube wall 10b is made of elastic material to form a gap-sealed elastic lumen, which not only achieves the purpose of reducing iatrogenic pollution, but also has a simple structure and low cost.

As a further improvement of the above technical solution, as shown in FIG. 2 , the injection tube 3 includes a tube wall 10 a and an elastic filling body 4 fixedly arranged in the tube wall 10 a, and the elastic filling body 4 is sealed with the injection tube 3 . The size of the gap allows the passage of liquid with corresponding pressure. Filling the injection tube 3 with the elastic filling body 4 can effectively prevent the drainage liquid from entering the injection tube 3 and contaminating the injection tube 3, making the medical drainage tube of the present invention that can avoid iatrogenic pollution safer.

As an alternative to the above-mentioned technical solution, as shown in FIG. 3 , the injection tube 3 includes a tube wall 10a and an elastic filling body 4' fixedly arranged in the tube wall 10a, and the elastic filling body 4' is arranged along the upper edge of the injection tube 3. The entire length is provided with a sealing gap for preventing drainage fluid from entering the injection tube 3 , and the size of the sealing gap allows liquid with corresponding pressure to pass therethrough. Filling the injection tube with an elastic filling body is used to seal the injection tube, thereby preventing the drainage liquid from entering the injection tube and polluting the injection tube. By setting a sealing gap on the elastic filling body or between the elastic filling body and the injection tube, The liquid with corresponding pressure can pass through the elastic filling body or between the elastic filling body and the injection tube, and the purpose of avoiding iatrogenic pollution is also achieved through the above arrangement.

As a further improvement of the above technical solution, as shown in Figure 1, the main drainage tube 1 is also provided with an auxiliary drainage tube 2, and the front part of the auxiliary drainage tube 2 shares the same drainage channel with the main drainage tube 1, so The tail end of the auxiliary drainage tube 2 is provided with a suction port 7 for connecting with a suction device, and the suction port 7 is provided with a cover 8 for sealing the suction port. The purpose of setting the auxiliary drainage tube 2 is to forcibly extract the obstruction from the auxiliary drainage tube 2 through a syringe when the main drainage tube 1 is blocked, thereby preventing the main drainage tube 1 from being blocked.

As a further improvement of the above-mentioned technical solution, the main drainage tube 1 is provided with a valve, and the valve is a three-way valve set at the connection between the auxiliary drainage tube 2 and the main drainage tube 1 or a limit valve set at the tail of the main drainage tube 1. Flow valve 9. When the auxiliary drainage tube 2 needs to be used, the auxiliary drainage tube 2 can be connected by adjusting the three-way valve or closing the restrictor valve 9 .

As a further improvement of the above technical solution, scales are marked on the outer wall of the front section of the main drainage tube 1 . A scale is marked on the outer tube wall of the front section of the main drainage tube to facilitate doctors to identify the depth of the drainage tube entering the patient's body, thereby ensuring the accuracy of the drainage site.

As a further improvement of the above technical solution, a plurality of liquid inlets 11 are provided on the outer wall of the front end of the main drainage tube 1 . Setting a plurality of liquid inlets 11 on the head of the main drainage tube and the side wall close to the head can avoid blocking of the main drainage tube 1 due to a single liquid inlet 11 .

As a further improvement of the above technical solution, the elastic fillers 4, 4' are made of medical rubber or medical silicone. The elastic filling body is made of medical rubber or medical silica gel to ensure that it has a certain degree of elasticity to allow the liquid medicine with a certain pressure to pass through it.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (7)

1. A medical drainage tube that can avoid iatrogenic pollution, including a main drainage tube (1), the front end of the main drainage tube (1) is provided with a liquid inlet (11), characterized in that: the main drainage tube ( 1) The injection tube (3) is arranged side by side near the front section of the liquid inlet (11), the drainage tube (1) and the injection tube (3) are integrally structured, and the injection tube (3) and the main drainage tube (1) are interconnected Not connected, the injection tube (3) includes a tube wall (10b), and the tube wall (10b) is made of elastic material to form a gap-tight elastic lumen. 2. The medical drainage tube capable of avoiding iatrogenic contamination according to claim 1, characterized in that: the tail end of the injection tube (3) is provided with an injection port (5) for connecting a syringe, and the injection port (5) is provided with a sealing plug (6) for sealing the injection port (5). 3. The medical drainage tube capable of avoiding iatrogenic pollution according to claim 2, characterized in that: the main drainage tube (1) is also provided with an auxiliary drainage tube (2), and the auxiliary drainage tube (2) ) shares the same drainage channel with the main drainage tube (1). 4. The medical drainage tube capable of avoiding iatrogenic contamination according to claim 3, characterized in that: the tail end of the auxiliary drainage tube (2) is provided with a suction port (7) for connecting a suction device, the The suction port (7) is provided with a cover (8) for sealing the suction port (7). 5. The medical drainage tube capable of avoiding iatrogenic pollution according to claim 4, characterized in that: the main drainage tube (1) is provided with a valve, and the valve is set between the auxiliary drainage tube (2) and A three-way valve at the connection of the main drainage tube (1) or a restrictor valve (9) arranged at the tail of the main drainage tube (1). 6. The medical drainage tube capable of avoiding iatrogenic pollution according to claim 5, characterized in that: the outer tube wall of the front section of the main drainage tube (1) is marked with a scale. 7. The medical drainage tube capable of avoiding iatrogenic pollution according to claim 6, characterized in that: the outer tube wall at the front end of the main drainage tube (1) is provided with a plurality of liquid inlets (11).

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