Bronchus plugging cannula

Abstract

The utility model relates to the field of medical instruments, in particular to a bronchus plugging cannula. Comprising a plugging tube, the first end of the plugging tube is provided with a plugging ball, and the second end of the plugging tube is sleeved with a trachea cannula; the end part of the second end of the plugging pipe is provided with a first branch interface, and the first branch interface is provided with a first air valve which is used for inflating and deflating the plugging ball; a plugging part is arranged in the circumferential direction of the plugging ball and is used for further plugging the gap. A bronchus plugging device method has the defects that the plugging effect is not better than that of a double-lumen bronchus cannula method, and air leakage is prone to occurring, so that a bronchus plugging cannula is urgently needed, the plugging effect of the bronchus plugging device method is improved, and air leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a bronchial blocking cannula. Background Art

[0002] Single-lung ventilation refers to the process of blocking or isolating the bronchus on the surgical side during thoracic surgery, so that the lung on the surgical side stops being ventilated, while the lung on the non-surgical side continues to be ventilated, in order to provide a good visual field and operating space for the surgical operation. Common methods of single-lung ventilation include double-lumen bronchial intubation and bronchial occluder.

[0003] The bronchial occluder method refers to the use of a long tube with an air bag, which is sent into the bronchus on the surgical side through a bronchoscope, and the air bag is inflated and deflated to block the bronchus to achieve single-lung ventilation. The advantage of the bronchial occluder method is that it has low intubation technical requirements and can be used directly with an ordinary single-lumen endotracheal tube. It is not easy to damage the airway during intubation, and complications such as catheter displacement are not likely to occur after intubation. At the same time, it has less interference with the patient's physiological function and is more suitable for patients with difficult intubation or bronchial stenosis. The disadvantage of the bronchial occluder method is that the blocking effect is not as good as the double-lumen bronchial intubation method, and it is prone to air leakage. There is an urgent need for a bronchial blocking intubation tube to improve the blocking effect of the bronchial occluder method and avoid air leakage. Utility Model Content

[0004] The utility model aims to provide a bronchial blocking cannula to solve the problems of poor blocking effect and easy air leakage of the existing bronchial blocking device method.

[0005] To achieve the above purpose, the following technical solution is adopted.

[0006] A bronchial blocking cannula comprises a blocking tube, wherein a blocking ball is arranged at the first end of the blocking tube, and a tracheal cannula is externally sleeved at the second end of the blocking tube; a first branch interface is arranged at the second end of the blocking tube, and a first air valve is arranged at the first branch interface for inflating and deflating the blocking ball; a blocking portion is arranged circumferentially of the blocking ball for further blocking the gap.

[0007] Optionally, the sealing portion is an elastic sealing member.

[0008] Optionally, the blocking portion is an annular airbag.

[0009] Optionally, the annular airbag is integrally connected to the blocking ball, and the diameter of the annular airbag is greater than the diameter of the blocking ball.

[0010] Optionally, the annular airbag is arranged on the outer periphery of the blocking ball.

[0011] Optionally, the annular airbag is connected to a ventilation tube, and the ventilation tube is provided with a second branch interface at the second end of the blocking tube, and the second branch interface is provided with a second air valve for inflating and deflating the annular airbag.

[0012] Optionally, the ventilation pipe is arranged inside the blocking pipe, and the outer diameter of the ventilation pipe is smaller than the inner diameter of the blocking pipe.

[0013] Optionally, the blocking portion is a plurality of arc-shaped airbags, which are evenly distributed on the periphery of the blocking ball, each of the arc-shaped airbags is respectively connected to the first end of a branch ventilation tube, and the second ends of the plurality of branch ventilation tubes are arranged at the second end of the blocking tube, and each of the second ends of the branch ventilation tubes is respectively connected to a branch air valve.

[0014] Optionally, each of the branch ventilation tubes is provided with a different first mark at the second end, the sealing ball is connected to the side of the sealing tube, and a different second mark is provided at the position of each of the arc-shaped airbags, and the second mark of each of the arc-shaped airbags is the same as the first mark at the second end of the branch ventilation tube corresponding to the arc-shaped airbag.

[0015] Optionally, the strength of the annular airbag is smaller than the strength of the blocking ball.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The present application provides a sealing portion on the circumference of the sealing ball to fill the gap around the sealing ball when it blocks the bronchus, thereby reducing air leakage and improving the blocking effect.

[0018] 2. The present application provides an annular airbag. When the blocking ball is blocking, if gaps are generated around, the annular airbag will fill the gaps under the pressure of the patient's bronchus to improve the blocking effect.

[0019] 3. The present application achieves the effect of sealing the gap at a fixed point by setting up multiple arc-shaped airbags, each of which is supplied with air independently. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic structural diagram of a first embodiment of a bronchial blocking cannula.

[0021] Figure 2 The utility model is a schematic structural diagram of a second embodiment of a bronchial blocking cannula.

[0022] Figure 3 This is a schematic diagram of the internal structure of the first end of a second embodiment of a bronchial blocking cannula of the utility model.

[0023] Figure 4The utility model is a schematic diagram of the internal structure of the first end of the third embodiment of a bronchial blocking cannula.

[0024] Among them, 1-blocking tube, 2-endotracheal tube, 3-blocking ball, 4-annular airbag, 5-ventilation tube, 6-first branch interface, 7-first air valve, 8-second branch interface, 9-second air valve, 10-arc-shaped airbag. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0026] The following detailed descriptions are all exemplary descriptions, and are intended to provide further detailed descriptions of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meanings as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0027] like Figure 1-Figure 4 As shown, a bronchial blocking cannula includes a blocking tube 1, a blocking ball 3 is provided at the first end of the blocking tube 1, and a tracheal cannula 2 is externally sleeved on the second end of the blocking tube 1; a first branch interface 6 is provided at the second end of the blocking tube 1, and the first branch interface 6 is provided with a first air valve 7 for inflating and deflating the blocking ball 3; a blocking portion is provided on the circumference of the blocking ball 3 for further blocking the gap.

[0028] Specifically, the blocking tube 1 is a long tube, and a blocking ball 3 is provided at the first end. The blocking ball 3 is a spherical object with an airbag, which can change its size and shape by inflating and deflation to adapt to different bronchial branches. The second end of the blocking tube 1 is externally sleeved with an endotracheal tube 2, which is a tube used for ventilation and can be connected to a ventilator or other equipment to provide oxygen or other gases to the patient. The second end of the blocking tube 1 is provided with a first branch interface 6, which is an interface for connecting an air source, and a first air valve 7 is provided. The first air valve 7 is a valve for controlling airflow, and the blocking ball 3 can be inflated and deflated by switching. The blocking ball 3 is provided with a blocking portion in the circumference, which is a part used to further block the gap. It can be in different forms such as an elastic seal, an annular airbag 4 or a plurality of arc-shaped airbags 10, and the circumference can be perpendicular to the direction of the blocking tube 1 and the outer periphery of the maximum diameter of the blocking ball 3.

[0029] As a specific example, the sealing portion is an elastic sealing member.

[0030] Specifically, the elastic seal is a material with elasticity, which can be deformed according to the shape and size of the blocking ball 3 to adapt to different bronchial branches. The elastic seal can be made of different materials such as rubber and silicone, and can be connected to the blocking ball 3 in an integrated or separate manner. It can be a fixed or adjustable shape, and can be a single-layer or multi-layer structure. The specific form can be designed and selected according to actual needs. When the blocking ball 3 is inflated, the elastic seal will also deform accordingly, fit tightly with the blocking ball 3, and at the same time, fit tightly with the inner wall gap of the bronchial branch to form a seal, thereby further blocking the gap and improving the blocking effect. After the blocking ball 3 is deflated, the elastic seal will also return to its original state, making it easy to remove from the bronchial branch.

[0031] like Figure 1-Figure 3 As shown, as a specific example, the blocking portion is an annular airbag 4.

[0032] Specifically, the annular airbag 4 can change its size and shape by inflating and deflating. When the blocking ball 3 is inflated, the annular airbag 4 can also be inflated accordingly, forming a whole with the blocking ball 3, and also forming a seal with the inner wall of the bronchial branch. If there is a gap around the blocking ball 3, the annular airbag 4 will fill the gap under the pressure of the patient's bronchus, thereby further blocking the gap and improving the blocking effect. After the blocking ball 3 is deflated, the annular airbag 4 can also be deflated accordingly and separated from the blocking ball 3, so as to be conveniently removed from the bronchial branch.

[0033] like Figure 1 As shown, as a preferred example, the annular airbag 4 is connected to the blocking ball 3 in an integrated manner, and the diameter of the annular airbag 4 is greater than the diameter of the blocking ball 3 .

[0034] Integrated communication means that the annular airbag 4 and the blocking ball 3 share an airway, and are inflated and deflated through the first branch interface 6 and the first air valve 7, so that the annular airbag 4 and the blocking ball 3 keep changing synchronously. The diameter of the annular airbag 4 is larger than the diameter of the blocking ball 3, which means that the outer diameter of the annular airbag 4 is larger than the outer diameter of the blocking ball 3, so that the annular airbag 4 can form a larger blocking area on the periphery of the blocking ball 3, thereby increasing the blocking effect.

[0035] like Figure 2 and Figure 3 As shown, as a preferred example, the annular airbag 4 is arranged on the periphery of the blocking ball 3. Being arranged on the periphery of the blocking ball 3 means that the annular airbag 4 is arranged separately from the blocking ball 3, the annular airbag 4 can be attached to the periphery of the blocking ball 3, the annular airbag 4 and the blocking ball 3 can be connected through the airway, and the annular airbag 4 can also be provided with a ventilation tube 5 separately.

[0036] As a preferred example of the above example, the annular airbag 4 is connected to a ventilation tube 5, and the ventilation tube 5 is provided with a second branch interface 8 at the second end of the blocking tube 1, and the second branch interface 8 is provided with a second air valve 9 for inflating and deflating the annular airbag 4.

[0037] Specifically, the vent pipe 5 is a tube for conveying gas, which can be connected to the annular airbag 4 in an integrated or separate manner. The vent pipe 5 can be arranged inside or outside the blocking tube 1, and the specific form can be designed and selected according to actual needs. The second branch interface 8 is an interface for connecting to an air source, and is provided with a second air valve 9. The second air valve 9 is a valve for controlling airflow, and the annular airbag 4 can be inflated and deflated by switching. The second branch interface 8 can be arranged in an integrated or separate manner with the first branch interface 6, and the specific form can be designed and selected according to actual needs.

[0038] As a preferred example, the ventilation tube 5 is arranged inside the blocking tube 1 , and the outer diameter of the ventilation tube 5 is smaller than the inner diameter of the blocking tube 1 .

[0039] Specifically, being arranged inside the blocking tube 1 means that the ventilation tube 5 is coaxial or eccentric with the blocking tube 1, and there is a certain gap between the outer surface of the ventilation tube 5 and the inner surface of the blocking tube 1 to facilitate the sliding and bending of the ventilation tube 5. The outer diameter of the ventilation tube 5 is smaller than the inner diameter of the blocking tube 1, which means that the outer diameter of the ventilation tube 5 is smaller than the inner diameter of the blocking tube 1, so that there is enough space for the ventilation tube 5 inside the blocking tube 1, and the ventilation function of the blocking tube 1 will not be affected.

[0040] like Figure 4 As shown, as a preferred example, the blocking portion is a plurality of arc-shaped airbags 10, which are evenly distributed on the periphery of the blocking ball 3, each arc-shaped airbag 10 is respectively connected to the first end of a branch ventilation tube 5, and the second ends of the plurality of branch ventilation tubes 5 are arranged at the second end of the blocking tube 1, and the second end of each branch ventilation tube 5 is respectively connected to a branch air valve.

[0041] Specifically, a plurality of arc-shaped airbags 10 are evenly distributed on the periphery of the blocking ball 3, specifically, on the periphery of the maximum diameter of the blocking ball 3, which is perpendicular to the direction of the blocking tube 1. Each arc-shaped airbag 10 can be inflated and deflated individually to achieve fixed-point blocking of gaps at different positions. The branch ventilation tube 5 is a tube for conveying gas, which can be connected to the arc-shaped airbag 10 in an integrated or separate manner, and can be arranged inside or outside the blocking tube 1. The specific form can be designed and selected according to actual needs. The branch air valve is a valve for controlling airflow, and the arc-shaped airbag 10 can be inflated and deflated by switching. The branch air valve can be integrated with or separated from the first branch interface 6, and the specific form can be designed and selected according to actual needs.

[0042] As a preferred example, a different first mark is respectively provided at the second end of each branch ventilation tube 5, and a different second mark is provided at the position of each arc-shaped airbag 10 on the sealing ball 3 connected to the side of the sealing tube 1. The second mark of each arc-shaped airbag 10 is the same as the first mark at the second end of the branch ventilation tube 5 corresponding to the arc-shaped airbag 10.

[0043] Specifically, the first mark and the second mark are a kind of identification used to distinguish different branch ventilation tubes 5 and arc-shaped airbags 10, which can be different forms such as numbers, letters, colors, shapes, etc. The specific form can be designed and selected according to actual needs. When the blocking ball 3 is inflated, the air source is connected through the branch air valve, and the multiple arc-shaped airbags 10 are inflated separately, but not all the arc-shaped airbags 10 are inflated at one time. Instead, according to the second mark on the blocking ball 3 and the first mark on the branch ventilation tube 5, the corresponding branch air valve is selected to inflate the arc-shaped airbags 10 at the position that needs to be blocked, thereby achieving fixed-point blocking of gaps at different positions and improving the blocking effect. After the blocking ball 3 is deflated, the multiple arc-shaped airbags 10 are deflated separately through the branch air valve, so that the arc-shaped airbags 10 are reduced and separated from the blocking ball 3, which is convenient for removal from the bronchial branch.

[0044] As a preferred example, the strength of the annular airbag 4 is smaller than the strength of the blocking ball 3 .

[0045] Strength refers to the ability of an object to resist deformation when subjected to external forces. It can be measured by different indicators such as the hardness, toughness, and elasticity of the material. The specific form can be designed and selected according to actual needs. The strength of the annular airbag 4 is less than that of the blocking ball 3, which means that the material of the annular airbag 4 is softer and easier to deform than the material of the blocking ball 3. This allows the annular airbag 4 to form a weaker blocking layer on the periphery of the blocking ball 3, thereby increasing the blocking effect. In this way, the annular airbag 4 can be more easily squeezed and deformed when encountering the inner wall of the bronchial branch, so that it can better fit with the inner wall of the bronchial branch, thereby further blocking the gap and improving the blocking effect. After the blocking ball 3 is deflated, the annular airbag 4 will also be deflated and separated from the blocking ball 3, making it easier to remove from the bronchial branch.

[0046] The present application provides a method for using a bronchial occlusion cannula, which mainly comprises the following steps:

[0047] Inserting the endotracheal tube 2 into the patient's trachea to connect it to the patient's respiratory tract;

[0048] The blocking tube 1 is inserted into the patient's trachea through the endotracheal tube 2, and the first end of the blocking tube 1 is introduced into the bronchial branch on the surgical side using a bronchoscope or other auxiliary means, so that the blocking ball 3 is located inside the bronchial branch;

[0049] Connect the air source through the first branch interface 6, open the first air valve 7, and inflate the blocking ball 3 to expand the blocking ball 3 and block the bronchial branch. At the same time, the blocking part will fill the gap around the blocking ball 3 to achieve complete blocking of the bronchus.

[0050] Ventilate the non-operative lung through the endotracheal tube 2 to achieve single-lung ventilation;

[0051] After the operation, close the first air valve 7, deflate the blocking ball 3, shrink it, and remove it from the bronchial branch. Then, pull out the blocking tube 1 and the endotracheal cannula 2 from the patient's trachea to complete the use of the bronchial blocking cannula.

[0052] It is known from common technical knowledge that the present invention can be implemented by its implementation schemes that do not deviate from its spirit or essential features. Therefore, the above disclosed implementation schemes are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A bronchial blocking cannula, characterized in that: include, A blocking tube (1), wherein a blocking ball (3) is provided at a first end of the blocking tube (1), and a tracheal tube (2) is sleeved on the outside of the second end of the blocking tube (1); a first branch interface (6) is provided at the second end of the blocking tube (1), and the first branch interface (6) is provided with a first air valve (7) for inflating and deflation of the blocking ball (3); The blocking ball (3) is provided with a blocking portion in the circumferential direction for further blocking the gap, the blocking portion being a plurality of arc-shaped air bags (10), the arc-shaped air bags (10) being evenly distributed on the outer circumference of the blocking ball (3), each of the arc-shaped air bags (10) being connected to the first end of a branch ventilation tube (5), the second ends of the plurality of branch ventilation tubes (5) being arranged at the second end of the blocking tube (1), and the second end of each branch ventilation tube (5) being connected to a branch air valve.

2. The bronchial blocking cannula according to claim 1, characterized in that: The blocking portion is an elastic sealing member.

3. The bronchial blocking cannula according to claim 1, characterized in that: The blocking portion is an annular airbag (4).

4. The bronchial blocking cannula according to claim 3, characterized in that: The annular airbag (4) is connected to the blocking ball (3) in an integrated manner, and the diameter of the annular airbag (4) is greater than the diameter of the blocking ball (3).

5. The bronchial blocking cannula according to claim 3, characterized in that: The annular airbag (4) is arranged on the outer periphery of the blocking ball (3).

6. The bronchial blocking cannula according to claim 5, characterized in that: The annular airbag (4) is connected to a ventilation pipe (5), and the ventilation pipe (5) is provided with a second branch interface (8) at the second end of the blocking tube (1), and the second branch interface (8) is provided with a second air valve (9) for inflating and deflating the annular airbag (4).

7. The bronchial blocking cannula according to claim 6, characterized in that: The ventilation pipe (5) is arranged inside the blocking pipe (1), and the outer diameter of the ventilation pipe (5) is smaller than the inner diameter of the blocking pipe (1).

8. The bronchial blocking cannula according to claim 1, characterized in that: A different first mark is provided at the second end of each branch ventilation tube (5), and a different second mark is provided at the position of each arc-shaped airbag (10) on the side surface of the blocking ball (3) connected to the blocking tube (1). The second mark of each arc-shaped airbag (10) is the same as the first mark at the second end of the branch ventilation tube (5) corresponding to the arc-shaped airbag (10).

9. The bronchial blocking cannula according to claim 3, characterized in that: The strength of the annular airbag (4) is smaller than the strength of the blocking ball (3).

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