Single-cavity plugging catheter

Abstract

The utility model relates to the technical field of medical auxiliary instruments, in particular to a single-cavity blocking catheter which comprises a main catheter and a main air bag used for blocking a trachea, a branch catheter with the inner diameter slightly smaller than that of the main catheter is connected to the lower end of the main catheter, and a branch air bag used for blocking the branch catheter is arranged on the branch catheter. The part connecting the main catheter and the branch catheter is an assembly, a gate used for changing the blocking state of the trachea is arranged in the assembly, a connecting piece is arranged in the gate, when the gate is closed by the connecting piece, single-lung ventilation can be conducted, and when the gate is opened by the connecting piece, double-lung ventilation can be conducted. The single-cavity plugging catheter is high in clinical feasibility, easy to align, simple to operate and convenient for medical staff to operate and use.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a single-lumen occluding catheter. Background Art

[0002] Thoracic surgery requires unilateral lung ventilation. Existing technologies include double-lumen endobronchial tubes and bronchial occluders. Both are limited in clinical application by numerous issues, including: 1. The large diameter of the double-lumen tube can easily cause airway damage; 2. The double-lumen tube and occluder are evenly spaced, increasing operational difficulty; and 3. During positioning, the bronchoscope and occluder interfere with each other, making them susceptible to damage or misalignment.

[0003] Many improvements to double-lumen tubes have been proposed, including one by Zeng Kai, published in April 2021, application number 202110133998.2, titled a single-lumen endobronchial catheter. This patent primarily addresses the switch assembly, which has the advantage of a smaller lumen diameter, accommodating patients of varying age groups. However, the complex operation of the switch assembly has limited clinical application. The team is currently developing a single-lumen occlusion catheter that is simple to operate and has proven to be accurate and effective in clinical trials. Summary of the Invention

[0004] The purpose of the utility model is to provide a simple-to-operate and effective single-lumen occlusion catheter that effectively reduces airway resistance and increases the number of people who are applicable to it.

[0005] To achieve the above technical objectives, the present invention is implemented through the following technical solutions:

[0006] A single-lumen occlusion catheter, characterized in that it includes a main catheter, a main airbag for tracheal occlusion, a branch catheter with an inner diameter slightly smaller than that of the main catheter connected to the lower end of the main catheter, and a bronchial bag for bronchial occlusion, the main airbag is connected to the main airbag inflation tube, the bronchial bag is connected to the bronchial bag inflation tube, and a component for connecting the main catheter and the branch catheter has a gate for changing the tracheal occlusion state in the component, the gate is provided with a connecting piece for changing the occlusion state, and the top of the connecting piece is fixedly connected to an operating rod for controlling the switching state of the connecting piece.

[0007] Preferably, the inner diameter of the main catheter is 3.0mm-9.0mm. Compared with the existing double-lumen bronchial catheter (model 26F-41F, inner diameter 4.0-6.5mm), the outer diameter is reduced while the inner diameter range is increased, thereby reducing airway resistance, reducing airway damage, and expanding the scope of applicability to the population.

[0008] Preferably, the assembly is provided with a gate and a connecting piece, and the length of the assembly is greater than the sum of the gate height and the connecting piece length.

[0009] Preferably, the top end of the connecting piece is connected to an operating rod, and the operating rod is moved out of the tube wall from the upper 1 / 3 of the tube wall of the main catheter.

[0010] Preferably, a slot is provided on the inner wall of the component, and the slot limits the sliding range of the connecting piece.

[0011] Preferably, the angle between the right-side blocking catheter branch catheter and the axial extension line of the main catheter is 25°~30°, the bronchial balloon is shaped as an eccentric cuff, and is located closer to the component end; the angle between the left-side blocking catheter branch catheter and the axial extension line of the main catheter is 40°~50°, the bronchial balloon is shaped as a lantern, and is located in the middle part of the branch catheter.

[0012] In summary, the advantages of this new device are: By replacing the dual-lumen device with a single lumen, airway resistance and damage are effectively reduced; the main catheter inner diameter ranges from 3.0mm to 9.0mm, which increases the patient population; and the simple design and ease of operation enhance clinical practicality. In particular, the new device has been proven feasible through model testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the single-lumen occlusion catheter;

[0014] Figure 2 For attachment Figure 1 Enlarged view of part A in the middle;

[0015] Figure 3 For attachment Figure 2 State diagram when the middle gate is open;

[0016] Figure 4 For attachment Figure 2 Front view of the middle gate when open and closed;

[0017] Figure 5 This is a schematic diagram of the structure of the present invention applied to the left lung;

[0018] Figure 6 This is a schematic diagram of the structure of the present invention applied to the right lung;

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Main catheter, 2. Main airbag, 3. Branch catheter, 4. Branch airbag, 5. Main airbag inflation tube, 6. Branch airbag inflation tube, 7. Component, 8. Gate, 9. Connecting piece, 10. Operating lever, 801, Card slot. DETAILED DESCRIPTION

[0021] The following will further describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0022] Example 1 According to the attached Figures 1 to 5 The single-lumen blocking catheter includes a main catheter 1, a main airbag 2 for tracheal blocking, a branch catheter with an inner diameter slightly smaller than that of the main catheter 1 connected to the lower end of the main catheter 1, a bronchial bag 4 for bronchial blocking, the main airbag 2 is connected to the main airbag inflation tube 5, the bronchial bag 4 is connected to the bronchial bag inflation tube 6, a component 7 for connecting the main catheter 1 and the branch catheter 3, and a gate 8 for changing the tracheal blocking state in the component 7. The gate 8 is provided with a connecting piece 9 for changing the blocking state, and the top of the connecting piece 9 is fixedly connected with an operating rod 10 for controlling the switching state of the connecting piece 9. The inner diameter of the main catheter 1 is 3.0mm-9.0mm. A card slot 801 is provided in the gate 8, and the range of the card slot 801 is larger than the gate so that the connecting piece 9 can slide in the card slot. An operating rod 10 is fixed to the top of the connecting piece 9, and the operating rod runs in the wall of the main catheter 1 and moves out of the wall at the upper 1 / 3 of the main catheter 1. The angle between the bronchial tube 3 and the extended line of the lower end of the main tube 1 is 40° to 50°. The bronchial balloon 4 is lantern-shaped and is located in the middle of the branch tube 3.

[0023] During surgery, a single-lumen occlusion catheter with a left-sided endobronchial tube 3 can be used for bilateral thoracic surgery. The endobronchial tube 5 is inserted into the left main bronchus, the main and bronchial bladders 2 and 4 are inflated, and the gate 8 is naturally open, enabling bilateral lung ventilation. When the main and bronchial bladders 2 and 4 are inflated, pushing the operating lever 10 causes the connecting piece 9 to slide downward along the retaining groove 801, closing the gate and enabling left-sided lung ventilation. Conversely, pulling the operating lever 10 causes the connecting piece 9 to slide upward along the retaining groove 801, opening the gate 8 and restoring bilateral lung ventilation.

[0024] Example 2 According to the attached Figure 6The single-lumen blocking catheter includes a main catheter 1, a main airbag 2 for tracheal blocking, a branch catheter with an inner diameter slightly smaller than that of the main catheter 1 connected to the lower end of the main catheter 1, a bronchial bag 4 for bronchial blocking, the main airbag 2 is connected to the main airbag inflation tube 5, the bronchial bag 4 is connected to the bronchial bag inflation tube 6, a component 7 for connecting the main catheter 1 and the branch catheter 3, and a gate 8 for changing the tracheal blocking state in the component 7. The gate 8 is provided with a connecting piece 9 for changing the blocking state, and the top of the connecting piece 9 is fixedly connected with an operating rod 10 for controlling the switching state of the connecting piece 9. The inner diameter of the main catheter 1 is 3.0mm-9.0mm. A card slot 801 is provided in the gate 8, and the range of the card slot 801 is larger than the gate so that the connecting piece 9 can slide in the card slot. An operating rod 10 is fixed to the top of the connecting piece 9, and the operating rod 10 runs in the wall of the main catheter 1 and moves out of the wall at the upper 1 / 3 of the main catheter 1. The angle between the bronchial tube 3 and the extended line of the lower end of the main tube 1 is 25° to 30°. The bronchial cuff 4 is in the shape of an eccentric cuff and is located closer to the end of the component 7.

[0025] During surgery, a single-lumen occlusion catheter with a right bronchial tube 3 can be used for bilateral thoracic surgery. The bronchial tube 5 is inserted into the right main bronchus of the lung, and the ventilation process for both lungs and the right lung is the same as that described in Example 1.

[0026] In summary, this single-lumen occlusion catheter has strong clinical feasibility, is easy to position, is simple to operate, and is convenient for medical staff to operate and use.

Claims

1. A single-lumen occlusion catheter, characterized by: The invention comprises a main catheter (1), a main air bag (2) for performing tracheal blocking, a branch catheter (3) having an inner diameter smaller than that of the main catheter (1) connected to the lower end of the main catheter (1), a bronchial bag (4) for performing branch catheter blocking, the main air bag (2) being connected to a main air bag inflation tube (5), the bronchial bag (4) being connected to a bronchial bag inflation tube (6), a component (7) for connecting the main catheter (1) and the branch catheter (3), a gate (8) for changing the tracheal blocking state being provided in the component (7), the gate (8) being provided with a connecting piece (9) for changing the blocking state, and an operating rod (10) for controlling the on / off state of the connecting piece (9) being fixedly connected to the top end of the connecting piece (9).

2. The single-lumen occlusion catheter according to claim 1, characterized in that: The inner diameter of the main conduit (1) is 3.0 mm to 9.0 mm.

3. The single-lumen occlusion catheter according to claim 1, characterized in that: A slot (801) is provided in the gate (8), and the slot (801) is larger than the gate so that the connecting piece (9) can slide in the slot.

4. The single-lumen occlusion catheter according to claim 1, characterized in that: An operating rod (10) is fixed to the top of the connecting piece (9), and the operating rod runs inside the wall of the main conduit (1) and moves out of the wall at 1 / 3 of the upper end of the main conduit (1).

5. The single-lumen occlusion catheter according to claim 1, characterized in that: The angle between the branch catheter (3) and the extension line of the lower end of the main catheter (1) is 40° to 50°, and the branch airbag (4) is lantern-shaped and located in the middle of the branch catheter (3).

6. The single-lumen occlusion catheter according to claim 1, characterized in that: The angle between the branch catheter (3) and the extension line of the lower end of the main catheter (1) is 25° to 30°, and the branch airbag (4) is shaped as an eccentric cuff and is located closer to the end of the component (7).

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