CN215841134U

CN215841134U - Balloon closed bronchoalveolar lavage catheter and lavage system

Info

Publication number: CN215841134U
Application number: CN202121532500.1U
Authority: CN
Inventors: 徐智; 杨昱; 王斌; 黄赞胜; 王静; 王苹
Original assignee: Second Affiliated Hospital Army Medical University
Current assignee: Second Affiliated Hospital Army Medical University
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2022-02-18
Anticipated expiration: 2031-07-06

Abstract

The utility model relates to the field of medical instruments, in particular to a balloon closed bronchoalveolar lavage catheter and a lavage system. The embodiment of the utility model provides an irrigation catheter, which comprises: the catheter comprises a catheter body, a balloon, an inductor and a controller; one end of the catheter body penetrates through the balloon and is provided with an lavage port, the other end of the catheter body is provided with an air source connector and an lavage connector, the catheter body is provided with an inflation channel and an lavage channel, the inflation channel is used for communicating the balloon and the air source connector, and the lavage channel is used for communicating the lavage port and the lavage connector; the sensor is electrically connected with the controller. This sacculus closed bronchoalveolar lavage catheter has improved the positive rate of bronchoalveolar lavage, reduces the lavage fluid use amount and improves the sacculus closed bronchoalveolar lavage pipeline of bronchoalveolar lavage fluid rate of recovery. In addition, the inflation volume of the balloon is monitored through the sensor, and the situation that the balloon is over inflated or under inflated is prevented.

Description

Balloon closed bronchoalveolar lavage catheter and lavage system

Technical Field

The utility model relates to the field of medical instruments, in particular to a balloon closed bronchoalveolar lavage catheter and a lavage system.

Background

Bronchoalveolar lavage is an examination technique for obtaining bronchoalveolar lining fluid or bronchoalveolar secretions in a lesion in the lung of a patient with a pulmonary disease.

At present, no special bronchoalveolar lavage pipeline exists clinically, and bronchoscopes are directly embedded in bronchial tubes communicated with focuses in clinical bronchoalveolar lavage, physiological saline is injected into the focuses of the lung through working channels of the bronchoscopes, and lavage liquid is recovered.

The method has the defect that the injected normal saline easily overflows to other bronchi, so that the consumption of the lavage fluid is large, the lung infection pathogen is easy to spread, and the recovery rate of the bronchoalveolar lavage fluid is low. It can also be said that: this method has low total lavage recovery, residual lavage fluid in the lavage channel, and lavage fluid spills into other non-target lung segments, main airway and other segment secretions mixed into the lavage fluid.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a balloon closed bronchoalveolar lavage catheter which can close bronchi in a lavage process, reduce the use amount of lavage fluid and improve the recovery rate of bronchoalveolar lavage fluid.

The utility model provides a balloon closed bronchoalveolar lavage catheter, comprising: the catheter comprises a catheter body, a balloon, an inductor and a controller;

one end of the catheter body penetrates through the balloon and is provided with an irrigation port, the other end of the catheter body is provided with an air source connector and an irrigation connector, the catheter body is provided with an inflation hole and an irrigation hole, the inflation hole is used for communicating the balloon and the air source connector, the balloon is used for expanding when inflated, and the irrigation hole is used for communicating the irrigation port and the irrigation connector;

the sensor is electrically connected with the controller and used for monitoring the expansion volume of the saccule. This sacculus closed bronchoalveolar lavage catheter forms the enclosure space in the bronchus through the inflation of sacculus, passes through the lavage fluid and gets into in this enclosure space and lavages it to solve the problem among the prior art, improved the positive rate of bronchoalveolar lavage, realize airtight bronchus, reduce the lavage fluid use amount and improve the sacculus closed bronchoalveolar lavage pipeline of bronchoalveolar lavage fluid rate of recovery at the lavage in-process. In addition, the inflation volume of the balloon is monitored through the sensor, and the situation that the balloon is over inflated or under inflated is prevented.

In a possible solution, the sensor is a flow sensor, and is connected to the inflation duct for monitoring the gas flow of the inflation duct, so as to monitor the inflation condition of the balloon.

In a possible solution, the sensor is a pressure sensor, and is connected to the inflation duct for monitoring the pressure in the inflation duct, so as to monitor the inflation condition of the balloon.

In a possible solution, the lavage catheter further comprises a solenoid valve electrically connected with the controller for controlling the on-off of the inflation channel so as to control the size change progress of the balloon.

In one possible solution, the inflation duct and the irrigation duct are arranged parallel to each other within the catheter body to improve the space utilization of the catheter body.

In one possible approach, the balloon is 0.5-1.5cm from the irrigation port to achieve superior perfusion.

In one possible embodiment, the air supply connector and the irrigation connector are each externally threaded to externally connect the balloon air supply device and the irrigation fluid infusion device.

The utility model also provides a bronchoalveolar lavage system comprising: the lavage catheter, the balloon air supply device and the lavage liquid injection device in any one of the above feasible schemes;

the balloon air supply device is externally connected to the air source connector, and the lavage liquid injection device is externally connected to the lavage connector.

In a feasible scheme, the balloon air supply device is an air pump and is electrically connected with the controller, so that medical personnel can control the balloon air supply device conveniently, and the operation difficulty is reduced.

In a possible solution, the lavage fluid infusion device is a suction pump and is electrically connected to the controller, so that the medical staff can control the device and the operation difficulty is reduced.

This kind of bronchoalveolar lavage system forms the enclosure space in the bronchus through the inflation of sacculus, passes through the lavage fluid and gets into in this enclosure space and lavages it to solve the problem among the prior art, improved the positive rate of bronchoalveolar lavage, realize airtight bronchus, reduce the lavage fluid use amount and improve the sacculus closed bronchoalveolar lavage pipeline of bronchoalveolar lavage fluid rate of recovery at the lavage in-process. In addition, the inflation volume of the balloon is monitored through the sensor, and the situation that the balloon is over inflated or under inflated is prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a bronchoalveolar lavage system according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a catheter body in an embodiment of the utility model;

FIG. 3 is a cross-sectional view of a catheter body in an embodiment of the utility model;

FIG. 4 is a schematic diagram of an application of a bronchoalveolar lavage system in an embodiment of the present invention;

FIG. 5 is a partial enlarged view of the portion B in FIG. 4;

fig. 6 is a schematic circuit block diagram of a bronchoalveolar lavage system according to an embodiment of the present invention;

the labels in the figure are:

the irrigation catheter comprises a catheter body 1, an irrigation port 11, a gas source connector 12, an irrigation connector 13, an inflation duct 14 and an irrigation duct 15;

a balloon air supply device 2;

an irrigation solution injection device 3;

a balloon 4;

an inductor 5;

and an electromagnetic valve 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

The term "proximal" refers to the end closer to the actual user and "distal" refers to the end further from the actual user.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; either directly or indirectly through intervening media, either internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

The inventor of the application finds that the method has the defects that the front end of the bronchoscope cannot well seal the bronchus and injected normal saline easily overflows to other bronchus, so that the consumption of the lavage fluid is large, the intrapulmonary dispersion of infectious pathogens is easy to occur, and the recovery rate of the bronchoalveolar lavage fluid is low.

In view of the actual conditions of current bronchoalveolar lavage technique, for the positive rate that improves bronchoalveolar lavage, this application provides one kind can seal the bronchus, reduce the lavage fluid use amount and improve the sacculus closed bronchoalveolar lavage pipeline of bronchoalveolar lavage fluid rate of recovery in the lavage process.

Examples

Fig. 1 is a schematic structural diagram of a balloon sealed bronchoalveolar lavage catheter and a lavage system in an embodiment of the present invention, fig. 2 is a sectional view of a catheter body in an embodiment of the present invention, fig. 3 is a sectional view of the catheter body in an embodiment of the present invention, fig. 4 is an application schematic diagram of the bronchoalveolar lavage system in an embodiment of the present invention, fig. 5 is a partial enlarged view of a portion B in fig. 4, and fig. 6 is a schematic structural diagram of a circuit module of the bronchoalveolar lavage system in an embodiment of the present invention.

As shown in fig. 1 to 6, the present embodiment provides a bronchoalveolar lavage system including: a balloon closed bronchoalveolar lavage catheter, a balloon air supply device 2 and a lavage fluid injection device 3.

Wherein, balloon closed bronchoalveolar lavage catheter includes: the catheter comprises a catheter body 1, a balloon 4, a sensor 5 and a controller.

As shown in fig. 1, the catheter body 1 may be a medical plastic tube, one end of the catheter body 1 passes through the balloon 4 and is provided with an irrigation port 11, the other end is provided with an air source connector 12 and an irrigation connector 13, and the catheter body 1 is provided with an inflation duct 14 and an irrigation duct 15, the inflation duct 14 is used for communicating the balloon 4 with the air source connector 12, the balloon 4 is used for expanding when inflating, and the irrigation duct 15 is used for communicating the irrigation port 11 with the irrigation connector 13. The sensor 5 is electrically connected with the controller and used for monitoring the expansion volume of the balloon 4.

In addition, preferably, as shown in fig. 1, the outside of the section a of the catheter body is provided with scales to facilitate the control of the distance between the end tube of the lavage tube and the bronchoscope or the positioning of the tail end of the catheter body.

Specifically, the balloon 4 may be disposed outside the catheter body 1, that is, the balloon 4 may be connected to the catheter body 1, and the balloon 4 may be closely attached to the outer wall of the catheter body 1 after being exhausted. The sacculus 4, the inflation channel and the air source joint 12 form an independent and closed channel, when external air source air enters, the sacculus 4 expands like a balloon due to pressure, so that the sacculus 4 is tightly attached to the inner side wall of the bronchus when expanding, and a closed space is formed at a focus so as to facilitate subsequent lavage operation. In order to monitor the expansion condition of the balloon 4 and avoid the condition that the lesion is not sealed due to the fact that the trachea is broken by too large expansion or the expansion is incomplete, the method for monitoring the expansion progress by using the sensor 5 is a very effective mode. In a preferred embodiment, the sensor 5 may be a flow sensor, and is connected to the inflation duct 14 for monitoring the gas flow of the inflation duct 14, so as to monitor the inflation condition of the balloon 4. Alternatively, the sensor 5 may be a pressure sensor, which is connected to the inflation channel 14 for monitoring the pressure in the inflation channel 14, so as to monitor the inflation condition of the balloon 4.

As shown in fig. 1, the balloon air supply device 2 is externally connected to the air supply connector 12, and the lavage liquid infusion device 3 is externally connected to the lavage connector 13. The balloon air supply device 2 and the lavage fluid infusion device 3 can be realized by a general syringe injector. And preferred scheme can be, sacculus air feeder 2 is the air pump, and with controller electric connection, perhaps, lavage liquid is annotated and is got device 3 and be the suction pump, and with controller electric connection to medical staff's control reduces the operation degree of difficulty.

As shown in fig. 4 and 5, the actual operation process may be as follows: the balloon 4 closed bronchoalveolar lavage tube can be placed at the tail end of a bronchus communicated with a lung focus through a treatment duct of a bronchoscope for treatment, and the balloon 4 is inflated and the bronchus is closed by injecting gas into the balloon 4. The lavage fluid is then injected into the irrigation passage using the lavage fluid injection device 3, flows out of the lavage port 11 and into the lung lesion without overflowing to other sites, and then the bronchoalveolar lavage fluid is withdrawn through the lavage fluid injection device 3.

Through the content, it is not difficult to discover that this sacculus closed bronchoalveolar lavage system forms the enclosure space in the bronchus through the inflation of sacculus 4, through lavage fluid through lavage pore 15 get into in this enclosure space and carry out the lavage to it to solve the problem among the prior art, improved the positive rate of bronchoalveolar lavage, realized airtight bronchus, reduce the lavage fluid use amount and improve the 4 closed bronchoalveolar lavage pipelines of sacculus of bronchoalveolar lavage fluid recovery rate at the lavage in-process. In addition, the inflation volume of the balloon 4 is monitored by the sensor 5, so that the condition that the balloon 4 is over inflated or under inflated is prevented. Namely, the lavage liquid is irrigated in the lung segment without overflowing under the sealing action of the balloon 4, and the bronchoalveolar lavage liquid is extracted by a special lavage and suction syringe after the lung segment is fully irrigated. Prevent that the excessive focus diffusion that leads to of lavage liquid, can also prevent that main airway and other leaf section secretions or blood from sneaking into lavage liquid and diluting the lavage liquid, improve the rate of recovery of lavage liquid.

In addition, preferably, the lavage catheter also comprises a solenoid valve 6, the solenoid valve 6 is electrically connected with the controller and is used for controlling the on-off of the inflation duct 14 so as to control the size change progress of the balloon 4.

In addition, preferably, the inflation duct 14 and the irrigation duct 15 are arranged parallel to each other within the catheter body 1 to improve the space utilization of the catheter body 1. For example, the hollow medical plastic pipe is a pipe with irregular pipe wall and inner diameter, the pipe body is 1.5m long, the outer diameter is 2.4mm, the thinnest part of the pipe wall is about 0.2mm, the thickest part is about 0.7mm, the maximum inner diameter is 2mm, and the minimum inner diameter is 1.5 mm. An inflation channel 14 for inflating and deflating the balloon 4 is provided at the thickest part of the catheter tube wall, the diameter of the inflation channel 14 being about 0.5 mm.

In addition, it is preferred that the balloon 4 is located 110.5-1.5cm from the irrigation port to achieve superior perfusion. The outer diameter of the balloon 4 is 5-20mm after being inflated.

In addition, preferably, the air supply connector 12 and the irrigation connector 13 are externally threaded so as to externally connect the balloon air supply device 2 and the irrigation solution infusion device 3.

In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate.

Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A balloon-sealed bronchoalveolar lavage catheter, comprising: the catheter comprises a catheter body, a balloon, an inductor and a controller;

the sensor is electrically connected with the controller and used for monitoring the expansion volume of the saccule.

2. An irrigation catheter according to claim 1, wherein the sensor is a flow sensor connected to the inflatable duct for monitoring the gas flow of the inflatable duct.

3. An irrigation catheter according to claim 1, wherein the sensor is a pressure sensor connected to the inflatable tunnel for monitoring the pressure within the inflatable tunnel.

4. An irrigation catheter according to claim 1, further comprising a solenoid valve electrically connected to the controller for controlling the opening and closing of the inflation channel.

5. An irrigation catheter according to claim 1, wherein the inflation duct and the irrigation duct are arranged parallel to each other within the catheter body.

6. The irrigation catheter of claim 1, wherein the balloon is 0.5-1.5cm from the irrigation port.

7. An irrigation catheter according to claim 1, wherein the gas source fitting and the irrigation fitting are each provided with an external thread.

8. A bronchoalveolar lavage system comprising: an irrigation catheter according to any of claims 1-7, and balloon gas supply means and irrigation fluid infusion means;

9. The irrigation system of claim 8, wherein the balloon gas supply is an air pump and is electrically connected to the controller.

10. An irrigation system according to claim 8, wherein the irrigation fluid infusion device is a suction pump and is electrically connected to the controller.