Double lumen endobronchial catheter

Abstract

The present invention discloses a double-lumen endobronchial catheter, comprising a catheter body inserted into the patient's bronchus, an inflation valve and an air bag, wherein an auxiliary ventilation tube and a main ventilation tube are inserted into the tube of the catheter body, the auxiliary ventilation tube is clamped in the main ventilation tube, a rubber clamp ring is arranged on the outer side of one end of the auxiliary ventilation tube, the inflation valve comprises a catheter inflation valve and a ventilation tube inflation valve, the catheter inflation valve is arranged on the catheter body, and the ventilation tube inflation valve is arranged on the auxiliary ventilation tube; the auxiliary ventilation tube is slidably inserted into the main ventilation tube, and the auxiliary ventilation tube and the main ventilation tube themselves have a certain curvature, and after extending from the interior of the catheter body, it is easy to enter the bronchi on both sides, so that the tube is conveniently placed; compared with the prior art, the present scheme is operated through a small-diameter auxiliary ventilation tube, so that the tube is conveniently placed, and the small-diameter auxiliary ventilation tube is easy to extend to the inside of the left bronchus due to its own moving curvature, so that the treatment is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a double-lumen bronchial catheter. Background Art

[0002] Endotracheal intubation technology is widely used in the rescue of anesthetized or critically ill patients. It can quickly establish an artificial airway to ensure the oxygen required for the patient's metabolism. Especially in thoracic surgery, most patients need to isolate the bronchial airways of the left and right lungs through a double-lumen bronchial catheter to achieve selective single-lung ventilation. Usually, the angle of the left bronchus of the body is too large compared to the inclination angle of the right bronchus, and the diameter of the secondary ventilation tube in the prior art is relatively thick, so it is difficult to place the tube. Forced intubation will cause local injuries to the patient and delay the time of treating the patient. Alternatively, a fiberoptic bronchoscope is used for treatment, but the fiberoptic bronchoscope is expensive and difficult to operate. For this reason, we provide a double-lumen bronchial catheter to solve the problems raised in the above background technology. Summary of the invention

[0003] The purpose of the present invention can be achieved through the following technical solutions: a double-lumen bronchial catheter, comprising a catheter body inserted into the patient's bronchus, an inflation valve and an air bag, wherein a secondary ventilation tube and a main ventilation tube are inserted into the tube of the catheter body, the secondary ventilation tube is clamped in the interior of the main ventilation tube, a rubber clamp ring is provided on the outer side of one end of the secondary ventilation tube, the inflation valve comprises a catheter inflation valve and a ventilation tube inflation valve, the catheter inflation valve is arranged on the catheter body, and the ventilation tube inflation valve is arranged on the secondary ventilation tube; the air bag comprises a catheter air bag and a ventilation tube air bag, the catheter air bag is arranged on the catheter body, the ventilation tube air bag is arranged on the secondary ventilation tube, a movable clamp ring is rotatably provided on the catheter body, a threaded guide rod is arranged on the outer side of the movable clamp ring, a collar is movably sleeved on the threaded guide rod, a connecting rod is arranged on the collar, a movable retaining ring is provided at the end of the connecting rod, the movable retaining ring is sleeved on the secondary ventilation tube and fits with the rubber clamp ring arranged on its surface.

[0004] Preferably, one end of the catheter body is sleeved with a sleeve, the sleeve is a non-woven sleeve, the outer side of the sleeve is adhered with Velcro, and the ventilation tube inflation valve and the catheter inflation valve are arranged between the Velcro and the sleeve.

[0005] Preferably, a rubber soft ring is fixedly sleeved on one end of the catheter body away from the catheter balloon, a ring groove is opened on the surface of the rubber soft ring, and a movable clamping ring is movably clamped inside the ring groove.

[0006] Preferably, a connecting block is provided on the outer side of the movable clamping ring, the end of the threaded guide rod is vertically connected to the connecting block, and a connecting screw sleeve is provided on the threaded guide rod, and the screw sleeve can be rotated to contact one side of the collar.

[0007] Preferably, a connecting pipe is provided at the end of the secondary ventilation pipe, a through pipe is provided on the connecting pipe, and a sealing cap is provided at the end of the connecting pipe.

[0008] Beneficial effects of the present invention:

[0009] 1. The auxiliary ventilation tube is slidably inserted into the main ventilation tube, and the auxiliary ventilation tube and the main ventilation tube have a certain curvature. After extending from the inside of the catheter body, it is easy to enter the bronchi on both sides, which is convenient for tube placement. At the same time, the use method of this device is similar to that of the prior art, and no complicated operation is required;

[0010] 2. Compared with the prior art, this solution is operated through a small-diameter auxiliary ventilation tube, which is convenient for tube placement. Moreover, the small-diameter auxiliary ventilation tube has its own moving arc and can easily extend to the inside of the left bronchus, making treatment convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a top view schematic diagram of the present invention;

[0014] Figure 3 It is a schematic diagram of the secondary vent pipe and the main vent pipe of the present invention;

[0015] Figure 4 It is a schematic diagram of the structure of the movable clamp ring of the present invention;

[0016] Figure 5 It is a schematic diagram of the structure of the secondary ventilation pipe of the present invention.

[0017] In the figure: 1 catheter body, 11 catheter airbag, 12 rubber soft ring, 13 catheter inflation valve, 2 auxiliary ventilation pipe, 21 ventilation pipe airbag, 22 ventilation pipe inflation valve, 23 rubber clamp, 3 movable clamp, 31 connecting block, 32 threaded guide rod, 33 collar, 331 connecting rod, 332 movable retaining ring, 34 screw sleeve, 4 connecting pipe, 5 sealing cap, 6 through pipe, 7 main ventilation pipe, 71 inner pipe groove, 8 sleeve, 81 Velcro. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-5 The present invention provides a technical solution: a double-lumen bronchial catheter, comprising a catheter body 1 inserted into the patient's bronchus, an inflation valve and an air bag, wherein a secondary ventilation tube 2 and a main ventilation tube 7 are inserted into the tube of the catheter body 1, the catheter body 1 is a double-layer structure, and its interior is hollow for passing through the secondary ventilation tube 2 and the main ventilation tube 7, the secondary ventilation tube 2 is clamped in the interior of the main ventilation tube 7, wherein an inner tube groove is provided in the interior of the main ventilation tube, the secondary ventilation tube 2 is located in the inner tube groove, and the secondary ventilation tube 2 and the main ventilation tube 7 themselves have a certain curvature, when the secondary ventilation tube 2 extends from the interior of the catheter body 1, it is easy to enter the left bronchus, a rubber clamp ring 23 is provided on the outer side of one end of the secondary ventilation tube 2, the inflation valve comprises a catheter inflation valve 13 and a ventilation tube inflation valve 22, the catheter inflation valve 13 is arranged on the catheter body 1, and the ventilation tube inflation valve 22 is arranged on the secondary ventilation tube 2; the air bag comprises The catheter airbag 11 and the ventilating tube airbag 21, the inflation amount of the catheter airbag 11 is greater than the inflation amount of the ventilating tube airbag 21, and can be inflated through the catheter inflation valve 13 and transmitted to the catheter airbag 11 through the catheter body 1, thereby completing the inflation effect. The ventilating tube airbag 21 is similar. The catheter airbag 11 is arranged on the catheter body 1, and the ventilating tube airbag 21 is arranged on the auxiliary ventilating tube 2. An active clamping ring 3 is rotatably arranged on the catheter body 1. The cross-sectional shape of the active clamping ring 3 is "U"-shaped, which is convenient for rotation and installation and disassembly. A threaded guide rod 32 is arranged on the outer side of the active clamping ring 3. The threaded guide rod 32 The upper movable sleeve is provided with a collar 33, and a connecting rod 331 is provided on the collar 33. The end of the connecting rod 331 is provided with a movable retaining ring 332. The movable retaining ring 332 is sleeved on the auxiliary ventilation tube 2 and fits with the rubber clamping ring 23 provided on the surface thereof. The rubber clamping ring 23 can be moved forward by pushing the movable clamping ring 3 and push one end of the auxiliary ventilation tube 2 to move into the airway tube body 1. When performing surgery, one end of the catheter body 1 with the auxiliary ventilation tube 2 and the main ventilation tube 7 inserted is first inserted into the patient's body, and the other end of the catheter body 1 is located outside the patient. When extended to the left side branch When the auxiliary ventilation tube 2 reaches the upper part of the trachea, inflate the catheter balloon 1, fix the position of the catheter body 1, and then push the movable clamping ring 3, so that the auxiliary ventilation tube 2 moves downward along the vertical threaded guide rod 32 until one end thereof extends to the inside of the left bronchus. Compared with the prior art, the present solution is operated through an auxiliary ventilation tube 2 with a small diameter, so that the tube placement is convenient, and the auxiliary ventilation tube 2 with a small diameter can easily extend to the inside of the left bronchus due to its own moving arc, so as to facilitate treatment; the inclination angle of the right bronchus is small, so there is no obstacle when the auxiliary ventilation tube 2 enters.

[0020] One end of the catheter body 1 is sleeved with a sleeve 8, which is a non-woven sleeve, and a Velcro 81 is adhered to the outside of the sleeve 8. When the ventilation tube inflation valve 22 and the catheter inflation valve 13 are not used, the ventilation tube inflation valve 22 and the catheter inflation valve 13 are arranged between the Velcro 81 and the sleeve 8 to avoid indiscriminate movement affecting the surgical process.

[0021] A rubber soft ring 12 is fixedly sleeved on one end of the catheter body 1 away from the catheter balloon 11. A ring groove is provided on the surface of the rubber soft ring 12. A movable clamping ring 3 is movably clamped inside the ring groove.

[0022] A connecting block 31 is arranged on the outer side of the movable snap ring 3, and the end of the threaded guide rod 32 is vertically connected to the connecting block 31. A connecting screw sleeve 34 is threadedly sleeved on the threaded guide rod 32, and the screw sleeve 34 can be rotated to contact one side of the collar 33.

[0023] A connecting tube 4 is provided at the end of the auxiliary ventilation tube 2, and a through tube 6 is connected to the connecting tube 4. A sealing cap 5 is provided at the end of the connecting tube 4. In order to avoid damage to the tracheal mucosa when the auxiliary ventilation tube 2 enters the human body, the inclined surface of the head end opening can be designed as a smooth inclined surface. The openings at the head ends of the auxiliary ventilation tubes 2 are all inclined openings, which is conducive to ensuring the ventilation volume and avoiding the occurrence of hypoxia symptoms.

[0024] A miniature camera may also be provided at the lower end of the auxiliary ventilation tube 2 to detect the depth of the auxiliary ventilation tube 2 entering the body and the distance from the inner wall of the lungs, and the catheter body 1 may be driven by a fiberoptic bronchoscope and inserted into the body.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A double-lumen bronchial catheter, comprising a catheter body (1) inserted into a patient's bronchus, an inflation valve and an air bag, characterized in that: The catheter body (1) has an auxiliary ventilation pipe (2) and a main ventilation pipe (7) inserted into the tube. The auxiliary ventilation pipe (2) is clamped inside the main ventilation pipe (7). A rubber clamp ring (23) is provided on the outer side of one end of the auxiliary ventilation pipe (2). The inflation valve comprises a catheter inflation valve (13) and a ventilation pipe inflation valve (22). The catheter inflation valve (13) is arranged on the catheter body (1), and the ventilation pipe inflation valve (22) is arranged on the auxiliary ventilation pipe (2). The airbag comprises a catheter airbag (11) and a ventilation pipe airbag (21). The catheter airbag (11) The ventilating tube airbag (21) is arranged on the auxiliary ventilating tube (2); a movable snap ring (3) is rotatably arranged on the ventilating tube (1); a threaded guide rod (32) is arranged on the outer side of the movable snap ring (3); a sleeve (33) is movably sleeved on the threaded guide rod (32); a connecting rod (331) is arranged on the sleeve (33); a movable retaining ring (332) is arranged at the end of the connecting rod (331); the movable retaining ring (332) is sleeved on the auxiliary ventilating tube (2) and fits with a rubber snap ring (23) arranged on the surface of the auxiliary ventilating tube (2); The end of the catheter body (1) away from the catheter balloon (11) is fixedly sleeved with a rubber soft ring (12), the surface of the rubber soft ring (12) is provided with a ring groove, and the movable clamping ring (3) is movably clamped inside the ring groove; A connecting block (31) is arranged on the outer side of the movable snap ring (3), the end of the threaded guide rod (32) is vertically connected to the connecting block (31), a connecting screw sleeve (34) is arranged on the threaded guide rod (32), and the screw sleeve (34) can be rotated to contact one side of the collar (33); A connecting pipe (4) is provided at the end of the secondary ventilation pipe (2), a through pipe (6) is provided on the connecting pipe (4), and a sealing cap (5) is provided at the end of the connecting pipe (4).

2. A double-lumen endobronchial catheter according to claim 1, characterized in that: One end of the catheter body (1) is sleeved with a sleeve (8), which is a non-woven sleeve. A Velcro (81) is attached to the outer side of the sleeve (8), and the ventilation tube inflation valve (22) and the catheter inflation valve (13) are arranged between the Velcro (81) and the sleeve (8).

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