CN111135366A

CN111135366A - Medical lavage tube and medical lavage system

Info

Publication number: CN111135366A
Application number: CN202010083552.9A
Authority: CN
Inventors: 陈菁; 罗光伟; 黎洁; 张忠民
Original assignee: Leo Medical Co ltd
Current assignee: Leo Medical Co ltd
Priority date: 2020-02-10
Filing date: 2020-02-10
Publication date: 2020-05-12

Abstract

The invention provides a medical lavage tube and a medical lavage system, comprising: the double-cavity tube is provided with two independent cavities, and two ends of the double-cavity tube are respectively provided with a port which is respectively communicated with the two cavities; and the connecting piece is connected with one end of the double-cavity pipe in a sealing way and forms an integral piece, and is provided with two pipe joints, one pipe joint is in butt joint communication with the port of one cavity, and the other pipe joint is in butt joint communication with the port of the other cavity. The invention can realize extraction while injecting or after injecting, and is convenient to use.

Description

Medical lavage tube and medical lavage system

Technical Field

The invention relates to an irrigation device, in particular to a medical irrigation tube and a medical irrigation system.

Background

Bronchoalveolar lavage (BAL) is a procedure of repeatedly irrigating and recovering with sterile physiological saline at the level of the lung segment or sub-lung segment below the bronchus through a fiber bronchoscope, and performing a series of detection and analysis on the recovered liquid, thereby obtaining the nature characteristics and the activity degree of the lower respiratory tract lesion and helping to establish diagnosis. The conventional method is to inject physiological saline into the human bronchoalveolar through a catheter, observe the water level through an endoscope cavity, and recover the bronchoalveolar after being filled with water. This approach is prone to patient choking and inadequate lavage fluid recovery. The infusion of a large amount of physiological saline has extremely high requirements on the technical level of doctors; and after a large amount of water is filled, the physiological saline can flow to other places, the recovered physiological saline also has the risk of being polluted by other places, and accurate pathological search cannot be carried out. Thus, there is a need for a device that facilitates use of irrigation.

Disclosure of Invention

In view of the above-mentioned disadvantages of the prior art, an object of the present invention is to provide a medical lavage tube and a medical lavage system, which are used to solve the problem that it is difficult to perform the operation of extracting while injecting during the medical lavage in the prior art.

To achieve the above and other related objects, the present invention provides a medical lavage tube comprising:

the double-cavity tube is provided with two independent cavities, and two ends of the double-cavity tube are respectively provided with a port which is respectively communicated with the two cavities;

and the connecting piece is connected with one end of the double-cavity pipe in a sealing way and forms an integral piece, and is provided with two pipe joints, one pipe joint is in butt joint communication with the port of one cavity, and the other pipe joint is in butt joint communication with the port of the other cavity.

Preferably, the other end of the double-cavity tube is provided with a sealing head for sealing the two cavities, the tube wall at the other end of the double-cavity tube is provided with an opening serving as the port, and each cavity corresponds to a plurality of openings. The sizes of the openings can be consistent with each other; or may be mutually inconsistent.

Preferably, the opening of one of the channels is offset from the opening of the other channel in the axial direction of the double-lumen tube.

Preferably, all of the openings of one of the channels are offset from all of the openings of the other of the channels in the axial direction of the dual lumen tube.

Preferably, the opening of one of the channels is opposite to the opening of the other channel in the axial direction of the double-cavity tube.

Preferably, the two pipe joints are arranged in an included angle shape.

Preferably, the center lines of the two pipe joints are located on the same straight line.

Preferably, the two channels of the double-cavity tube are formed by dividing a round tube by a partition.

Preferably, the cross section shapes and sizes of the two channels of the double-cavity tube are the same.

Preferably, the two channels of the double-cavity tube are used as an injection cavity for injecting liquid, and the cross section of the injection cavity is smaller than that of a pumping cavity for pumping the liquid.

Preferably, the pipe joint has an extension pipe portion and a coupling head connected thereto.

The invention also comprises a medical irrigation system comprising a medical irrigation tube as described above, an injection device connected to one of the tube connectors of the medical irrigation tube, and an extraction device connected to the other tube connector of the medical irrigation tube.

Preferably, the pumping device comprises a lavage liquid recovery bottle, the inlet pipe of the lavage liquid recovery bottle is connected with the other pipeline, and the outlet pipe of the lavage liquid recovery bottle is connected with the injection syringe or the suction equipment.

Preferably, the injection device is a syringe.

As described above, the medical lavage tube and the medical lavage system of the present invention have the following advantageous effects: the medical lavage tube adopts two ports at the rear end of the double-cavity tube to be directly butted with two tube joints of the connecting piece, so that the expansion and extension of two cavities are realized, the two cavities are directly communicated with the injection device and the extraction device in the medical lavage system, the injection and extraction are realized simultaneously or after the injection, and the use is convenient; in addition, the proportion, the speed and the like of the irrigating solution can be realized by controlling the sectional areas of the two cavities in the double-cavity tube.

Drawings

Fig. 1 is a schematic view of an embodiment of the medical lavage tube of the present invention.

Fig. 2 is a schematic view of another embodiment of the medical lavage tube of the present invention.

Fig. 3 shows a schematic view of a third embodiment of the medical lavage tube of the present invention.

Fig. 4 shows a schematic view of a fourth embodiment of the medical lavage tube of the present invention.

Fig. 5-9 show examples of openings in the wall of the front tube of the medical lavage tube of the present invention.

Fig. 10-14 show schematic cross-sectional shapes of two lumens of a medical lavage tube of the present invention.

Fig. 15 is a diagram illustrating an embodiment of an infusion device of the medical irrigation system of the present invention.

Fig. 16 is a view showing an embodiment of the extraction device of the medical irrigation system of the present invention.

Description of the element reference numerals

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 8. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

For convenience of description, the longitudinal direction of the medical lavage tube is referred to as the front-back direction, the end of the medical lavage tube entering the body is referred to as the "front end", and the opposite end is referred to as the "back end".

As shown in fig. 1 to 4, the present invention provides a medical lavage tube, comprising:

the double-cavity pipe 2 is provided with two independent cavities, namely an injection cavity 21 and a drawing cavity 22, and two ends of the double-cavity pipe 2 are provided with ports respectively communicated with the two cavities; the connecting piece 1 is connected with one end of the double-cavity pipe 2 in a sealing mode and forms an integral piece, the connecting piece 1 is provided with two pipe joints which are an injection joint 11 and an extraction joint 12 respectively, one pipe joint is communicated with a port of one cavity, the other pipe joint is communicated with a port of the other cavity in a butt joint mode, namely the two pipe joints are in one-to-one correspondence with the two cavities and are communicated with the two cavities respectively and independently, the injection joint 11 is communicated with the injection cavity 21 independently, and the extraction joint 12 is communicated with the extraction cavity 22 independently.

The invention adopts the connecting piece 1 to be connected with the double-cavity tube 2 in a sealing way, each tube joint is directly communicated with the corresponding cavity channel, and no communication channel exists between the two, so that the injection and the extraction are completely separated, the extraction after the injection can be realized, and the extraction while the injection can be realized. In the using process of the invention, a medical lavage tube reaches the alveolar position of target lavage through an endoscope channel, an apparatus filled with physiological saline is connected on an injection joint 11, and the physiological saline is injected into an injection cavity 21 at a certain speed; at the same time, a suction device is connected to the suction connection 12, performing a suction action at a certain rate. The physiological saline flows out from the front end port of the injection cavity 21 through the injection cavity 21, infiltrates the alveolar part, combines with germs, bacteria, tissue secretions and the like of the target tissue, flows back to the extraction cavity 22 from the front end port of the extraction cavity 22 under the action of negative pressure, and is recovered through the extraction joint 12.

Double-cavity tube

As shown in fig. 1 to 9, in the present embodiment, the other end of the double-lumen tube 2 (i.e., the front end of the double-lumen tube) is provided with a sealing head 4 for sealing two lumens, and the wall of the other end of the double-lumen tube 2 is provided with openings as ports, each lumen corresponds to a plurality of openings, as shown in fig. 5 to 9, an injection side opening 23 and a withdrawal side opening 24, the injection side opening 23 is communicated with the injection lumen 21, and the withdrawal side opening 24 is communicated with the withdrawal lumen 22. In this embodiment, the other end of the double lumen tube 2 is closed and a plurality of openings are formed in the tube wall to facilitate injection and extraction, so that the injection speed and the extraction speed can be increased as compared with the case where the tube end opening of the double lumen tube itself is used as a port.

As shown in fig. 5 to 9, the positions of the injection side aperture 23 and the extraction side aperture 24 may be designed in various ways. The openings of one of the channels are axially offset from the openings of the other channel in the direction of the double-lumen tube, as shown in fig. 5 and 7, the injection side openings 23 and the extraction side openings 24 are axially offset, and the injection side openings 23 may be located away from the front end of the medical lavage tube (as shown in fig. 5) or close to the front end of the medical lavage tube (as shown in fig. 7) relative to the extraction side openings 24.

As all the openings of one of the channels are arranged in an offset manner in the axial direction of the double-lumen tube from all the openings of the other channel, as shown in fig. 8 and 9, all the injection side openings 23 and all the extraction side openings 24 are offset integrally in the axial direction.

The opening of one of the channels is opposite to the opening of the other channel in the axial direction of the double-lumen tube, and all the injection side openings 23 and all the extraction side openings 24 are opposite to each other in the axial direction as shown in fig. 6.

The size of each side opening can be consistent or inconsistent as required.

The two channels of the double lumen tube 2 in this embodiment may have a variety of configurations. According to actual use needs, a structure that two cavities are equally divided or a structure that one large cavity and one small cavity are adopted can be adopted. As shown in fig. 10-14, the two channels of the dual-chamber tube 2 may be divided by a circular tube through a partition, which may be equally divided as shown in fig. 10, and the cross-sectional shapes and sizes of the two channels of the dual-chamber tube 2 are the same. The two channels may be larger and smaller as shown in fig. 11-14. the two channels of the double lumen tube 2 have an infusion lumen 21 for infusion of fluid, which has a smaller cross-section than the withdrawal lumen 22 for withdrawal of fluid. The difference of the design of the large and small cavities mainly considers the difference of the filling and extracting speeds of the lavage liquid, thereby influencing the lavage process.

According to the application occasion, the outer diameter of the double-cavity tube 2 is 0.8-3.0 mm, and the length of the part entering the endoscope channel is 500-2000 mm. The injection chamber 21 and the extraction chamber 22 are dimensioned with suitable geometric design taking into account a safe and reliable non-yielding construction and a maximum volume. The sealing head 4 is a soft head which is generally conical, the diameter of the foremost end is 0.3-2.0 mm, and the length is 0.3-15 mm. The number of the injection side holes 23 and the extraction side holes 24 can be 1-20, and the number of the two side holes can be inconsistent as required. The length of the two side holes along the axial direction of the double-cavity tube 2 is 0.1-8 mm, the two side holes can be in the combination of one or more geometric shapes such as a circle, an ellipse, a triangle, a rectangle and the like, and the design needs to be compatible with the consideration of the enough structural strength of the liquid circulation pore channel and the tube which are as large as possible; the size of each side hole can be consistent or inconsistent according to the requirement. The connection between the double-cavity tube 2 and the sealing head 4 can adopt lap joint or butt joint in a hot melting mode, or integral injection molding connection or gluing connection.

Connecting piece

The connecting piece in the embodiment can have various structural forms, and only two pipe joints and two cavities are required to be communicated independently. As shown in fig. 1 to 2, the two pipe joints may be arranged in an angle, for example, the injection joint 11 and the extraction joint 12 are Y-shaped; the centre lines of the two pipe connections may be located on the same line, i.e. the injection connection 11 and the extraction connection 12 are straight, as shown in fig. 3. The injection connector 11 and the extraction connector 12 need to be compatible with other instruments, and may be medical luer connectors, quick-change connectors, pagoda connectors or the like in various shapes.

The connecting piece 1 and the double-cavity tube 2 can be connected by integral injection molding, gluing or hot melting.

In this embodiment both pipe joints have an extension pipe portion and a connector that are connected. In specific implementation, as shown in fig. 4, the two-lumen pipes can be connected in a sealing manner by connecting the two sections of pipes, so as to achieve corresponding communication between the two-lumen pipes, i.e., the injection connector 11 is connected to the extension pipe part 14, the extraction connector 12 is connected to the extension pipe part 15, and the lumens of the two

extension pipe parts

14 and 15 with a single lumen structure are respectively communicated with the two lumens of the two-lumen pipe 2 inside the connecting member, but are not communicated with each other.

The present invention also includes a medical lavage system comprising a medical lavage tube as described above, an injection device (in this embodiment, the syringe 4 shown in fig. 7) connected to one of the tube connectors (i.e., the injection connector 11) of the medical lavage tube, and a withdrawal device connected to the other tube connector (i.e., the withdrawal connector 12) of the medical lavage tube.

The extraction device connected with the extraction joint 12 in the embodiment can be an empty syringe, when in use, the handle of the syringe can be pulled backwards to form negative pressure, and the lavage liquid is recovered into the empty syringe. After the lavage process is completed, the recovered lavage fluid is poured into a specimen bottle for pathological examination. The lavage fluid may be collected by using a suction device as shown in FIG. 7.

As shown in fig. 8, the pumping device comprises a lavage fluid recovery bottle 8, a liquid inlet pipe 6 of the lavage fluid recovery bottle 8 is connected with the pumping cavity 22 through a liquid inlet pipe joint 5, and a gas outlet pipe 31 of the lavage fluid recovery bottle 8 is connected with the injection syringe or the suction equipment through a gas outlet joint 32. For convenience of implementation, the lavage liquid recovery bottle 8 in this embodiment has a bottle cap 33, the liquid inlet pipe 6 is communicated with the interior of the lavage liquid recovery bottle 8 through a liquid inlet plug 7 inserted on the bottle cap 33, and the gas outlet pipe 31 is communicated with the interior of the lavage liquid recovery bottle 8 through a gas outlet plug 10 inserted on the bottle cap 33.

In use, the liquid inlet joint 5 is directly connected to the suction joint 12, and an empty syringe or a special suction device such as an electric aspirator is connected to the air outlet joint 32, and a suction operation of negative pressure is performed as a negative pressure generator. Lavage liquid in the alveolus flows into the lavage liquid recovery bottle 8 along the liquid inlet pipe 6 under the action of negative pressure, and falls into the bottom of the bottle under the action of gravity to be accumulated into lavage recovery liquid 9. The air portion flows to the negative pressure generator through the air outlet pipe 31 in the negative pressure direction. The inlet spigot 7 is deeper in the insertion position of the outlet spigot 10 into the lavage liquid recovery bottle 8 to ensure that the recovery liquid can fall completely to the bottom of the bottle without being carried into the outlet tube 31 by the negative pressure gas.

In the aspect of materials, the materials of all the components are materials with good biocompatibility. The connecting piece 1, the double-cavity tube 2 and the sealing head 4 are made of one or a plurality of materials of PA, PEBAX, PE, PTFE, PP, PC, ABS, silica gel, PVC and PU. The material of the double-cavity tube 2 has certain hardness and is relatively straight, so that the operation of insertion and exploration is convenient to implement. The material of the sealing head 4 is selected to have lower hardness and softer hardness, so that the lung tissue is prevented from being damaged. The lavage liquid recovery bottle 8 can be a silicon-coated glass bottle, a silicon plastic bottle, a glass bottle or a container made of high polymer materials such as PP, PE, PA, PC, PS and the like. The liquid inlet pipe 6 and the gas outlet pipe 31 can be made of PVC, silica gel and other materials. The liquid inlet joint 5, the gas outlet joint 32, the liquid inlet plug 7 and the gas outlet plug 10 can be one or a composite of several materials of PA, PEBAX, PE, PP, PC, ABS, silica gel, PVC and PU.

The connecting piece 1 and the double-cavity tube 2, the liquid inlet pipe joint 5 and the liquid inlet pipe 6, the liquid inlet pipe 6 and the liquid inlet plug 7, the liquid inlet plug 7 and the bottle cap 33, the bottle cap 33 and the gas outlet plug 10, the gas outlet plug 10 and the gas outlet pipe 31, the gas outlet pipe 31 and the gas outlet joint 32 are connected in an integrated injection molding mode, a gluing mode or a hot melting mode. The connection between the double-cavity tube 2 and the sealing head 4 can adopt lap joint or butt joint in a hot melting mode, or integral injection molding connection or gluing connection. At the connection point 3 of the double lumen tube 2 and the sealing head 4 is a mixed connection region where the two materials are present.

In summary, the medical lavage tube and the medical lavage system of the invention adopt the two ports at the rear end of the double-lumen tube to directly butt with the two tube joints of the connecting piece, so as to realize the extension of the two lumens, thereby realizing the direct communication between the two lumens and the injection device and the extraction device in the medical lavage system, realizing the extraction while injecting or after injecting, and being convenient for use; in addition, the proportion and the speed of the irrigating solution can be realized by controlling the sectional areas of the two cavities in the double-cavity tube. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A medical lavage tube, comprising:

2. A medical lavage tube as claimed in claim 1, wherein: the other end of the double-cavity tube is provided with a sealing head for sealing two cavities, the tube wall at the other end of the double-cavity tube is provided with an opening serving as the port, and each cavity corresponds to a plurality of openings.

3. A medical lavage tube as claimed in claim 2, wherein: the opening hole on one cavity channel and the opening hole on the other cavity channel are arranged in a staggered mode in the axial direction of the double-cavity tube.

4. A medical lavage tube as claimed in claim 2, wherein: wherein all of the openings in one of the channels are offset from all of the openings in the other of the channels in an axial direction of the dual lumen tube.

5. A medical lavage tube as claimed in claim 2, wherein: the opening hole on one cavity channel is opposite to the opening hole on the other cavity channel in the axial direction of the double-cavity tube.

6. A medical lavage tube as claimed in claim 1, wherein: the two cavities of the double-cavity tube are formed by dividing a round tube by a partition.

7. A medical lavage tube as claimed in claim 1, wherein: the cross sections of the two cavities of the double-cavity tube are the same in shape and size.

8. A medical lavage tube as claimed in claim 1, wherein: the cross section of an injection cavity used for injecting liquid in two cavities of the double-cavity tube is smaller than that of a pumping cavity used for pumping the liquid out.

9. A medical lavage tube as claimed in claim 1, wherein: the two pipe joints are arranged in an included angle shape.

10. A medical lavage tube as claimed in claim 1, wherein: the central lines of the two pipe joints are positioned on the same straight line.

11. A medical lavage tube as claimed in claim 1, wherein: the pipe joint is provided with an extension pipe part and a connector which are connected.

12. A medical lavage system characterized by: comprising a medical lavage tube as claimed in any of claims 1 to 11, an infusion means connected to one of the tube connectors of said medical lavage tube, and an extraction means connected to the other tube connector of said medical lavage tube.

13. A medical irrigation system according to claim 12, wherein: the extraction device comprises an lavage liquid recovery bottle, the inlet pipe of the lavage liquid recovery bottle is connected with the other pipeline, and the outlet pipe of the lavage liquid recovery bottle is connected with the injection syringe or the suction equipment.

14. A medical irrigation system according to claim 12, wherein: the injection device is an injection syringe.