Double-lumen bronchial cannula and use method thereof

Abstract

The invention belongs to the technical field of medical instruments, and discloses a double-lumen bronchial cannula and a using method thereof.The double-lumen bronchial cannula comprises a cannula body, two external tubes are fixedly installed at one end of the cannula body, and a tracheal cuff and a bronchial cuff are arranged at the end, away from the external tubes, of the cannula body; when the double-cavity bronchial cannula is used, after the cannula body is inserted into the body of a patient, the end of the plugging head is pressed by the inner wall of the body of the patient to slide into the tracheal cuff, one end of the liquid outlet cavity slides into the liquid storage cavity, and the other end of the liquid outlet cavity slides into the tracheal cuff. The lubricant preset in the liquid storage cavity enters the liquid outlet cavity to be discharged, and the tracheal cuff and the inner wall of the body of the patient are lubricated, so that the risk that the airway mucous membrane or the laryngeal tissue of the patient is damaged is reduced, and the comfort degree of the device during use is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and specifically relates to a double-lumen endobronchial cannula and a use method thereof. Background Art

[0002] Double-lumen endobronchial intubation, as a unique endotracheal intubation technology, is designed for patients who need fine-tuned breathing or undergo lung surgery. It is widely used in chest surgery and the treatment of critically ill patients. It can achieve independent synchronous or asynchronous endotracheal intubation of a single lung, thereby establishing a temporary breathing channel on the left and right sides.

[0003] During the operation, the double-lumen endobronchial tube needs to be slowly inserted along the midline of the patient's larynx. However, this process is often accompanied by a certain amount of friction and resistance, especially when the patient's airway mucosa is relatively dry or accompanied by inflammation. This phenomenon is particularly significant, thereby increasing the risk of damage to the patient's airway mucosa or laryngeal tissue. Summary of the invention

[0004] The object of the present invention is to provide a double-lumen endobronchial tube and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a double-lumen endobronchial cannula, comprising a cannula body, one end of the cannula body is fixedly mounted with an external tube, two external tubes are provided, one end of the cannula body away from the external tube is provided with a tracheal cuff and a bronchial cuff, a lubrication component is provided inside the tracheal cuff, a bronchial auxiliary tube is installed inside the bronchial cuff, and the bronchial auxiliary tube is connected to the cannula body;

[0006] Among them, the lubrication component includes a plugging head arranged inside the tracheal cuff, the plugging heads are evenly arranged, each of the plugging heads has a liquid outlet cavity inside, each of the liquid outlet cavities has a control component inside, the plugging head is slidably connected to the tracheal cuff, and the tracheal cuff has a liquid storage cavity inside.

[0007] As a further technical solution of the present invention, the control component includes a control board arranged inside the liquid outlet chamber, one side of the control board is fixedly connected to a rotating shaft, an outer wall of the rotating shaft is fixedly installed with a gear, one side of the gear is meshingly connected with a rack plate, and the rack plate is fixedly installed inside the plugging head.

[0008] As a further technical solution of the present invention, one end of the blocking head is fixedly connected to a connecting rod, one end of the connecting rod is fixedly installed with a limiting plate, the limiting plate is slidably installed inside the tracheal cuff, and a first spring is provided on one side of the limiting plate.

[0009] As a further technical solution of the present invention, a slider is installed on the outer wall of the rotating shaft, and the slider is slidably installed inside the plugging head. A second spring is provided on one side of the slider.

[0010] As a further technical solution of the present invention, the sliding block is rotatably connected to the rotating shaft.

[0011] As a further technical solution of the present invention, a protective ring is installed on the outer wall of the plugging head, and the protective ring is embedded in the interior of the tracheal cuff.

[0012] As a further technical solution of the present invention, an air bag is arranged inside the liquid storage cavity, and a connecting trachea is fixedly connected to one side of the air bag, and the connecting trachea is embedded in the interior of the tracheal cuff.

[0013] As a further technical solution of the present invention, a push plate is provided on one side of the airbag, and the push plate is slidably installed inside the liquid storage chamber. An insertion rod is fixedly installed on one side of the push plate, and a plug is fixedly installed on one end of the insertion rod, and the plug is embedded in the inside of the slide groove.

[0014] As a further technical solution of the present invention, the plug is configured to be in a truncated cone shape.

[0015] A method for using a double-lumen endobronchial tube comprises the following steps:

[0016] S1: When the double-lumen endobronchial tube is used, after the tube body is inserted into the patient's body, the end of the plugging head is pressed by the patient's body wall and slides into the tracheal cuff, so that one end of the liquid outlet cavity slides into the liquid storage cavity, and the lubricant preset in the liquid storage cavity enters the liquid outlet cavity. The lubricant flows outward to push the control board to move, and the movement of the control board drives the movement of the rotating shaft, and the movement of the rotating shaft drives the movement of the gear. The gear and the rack plate mesh and rotate, so that the control board rotates ninety degrees, and the lubricant is smoothly discharged to lubricate the tracheal cuff and the patient's body wall;

[0017] S2: When the plugging head is forced to slide into the tracheal cuff, the connecting rod is driven to move, and the movement of the connecting rod drives the limiting plate to slide inside the tracheal cuff, and forces the first spring to deform under force to store elastic potential energy;

[0018] S3: When the lubricant is discharged and the control plate is pushed to move, the slider slides and forces the second spring to deform and store elastic potential energy;

[0019] S4: When the friction between the device and the patient's body wall decreases, the first spring releases elastic potential energy to push the limit plate, so that the plugging head moves to reset, the discharge of lubricant stops, and the second spring releases elastic potential energy to reset it;

[0020] S5: When the tracheal cuff is inflated, a portion of the gas is discharged into the interior of the airbag through the connecting trachea, causing the airbag to expand and push the push plate to move in the liquid storage chamber. The movement of the push plate drives the plug to slide into the slide groove, and the slide groove engages with the slide groove to maintain the pressure in the liquid storage chamber, which helps to subsequently discharge the lubricant in the liquid storage chamber to continue lubrication.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The present invention provides a lubricating component. When the double-lumen endobronchial cannula is used, after the cannula body is inserted into the patient's body, the end of the blocking head is pressed by the inner wall of the patient's body and slides into the tracheal cuff, so that one end of the liquid outlet cavity slides into the liquid storage cavity, and the lubricant preset in the liquid storage cavity enters the liquid outlet cavity and is discharged, thereby lubricating the tracheal cuff and the inner wall of the patient's body, thereby reducing the risk of damage to the patient's airway mucosa or laryngeal tissue, and improving the comfort of the device when used.

[0023] 2. The present invention arranges the control component so that when the lubricant in the liquid storage chamber enters the liquid outlet chamber, the lubricant flows outward to push the control plate to move. The movement of the control plate drives the movement of the rotating shaft. The movement of the rotating shaft drives the movement of the gear. The gear meshes with the rack plate and rotates, thereby rotating the control plate ninety degrees and the lubricant is discharged smoothly.

[0024] 3. The present invention provides an airbag. When the tracheal cuff is inflated, a portion of the gas is discharged into the airbag through the connecting trachea, so that the airbag expands, the pressure in the liquid storage cavity increases, and the lubricant in the liquid storage cavity is squeezed and discharged more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic cross-sectional view of the structure of the tracheal cuff of the present invention;

[0027] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0028] Figure 4 This is a schematic diagram of the structure of the plugging head of the present invention;

[0029] Figure 5 It is a schematic cross-sectional view of the plugging head structure of the present invention;

[0030] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0031] Figure 7 It is a schematic cross-sectional view of the structure of the liquid storage cavity of the present invention;

[0032] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point C in the middle.

[0033] In the figure: 1. cannula body; 2. external tube; 3. tracheal cuff; 4. bronchial cuff; 5. liquid storage chamber; 6. plugging head; 7. liquid outlet chamber; 8. connecting rod; 9. limit plate; 10. first spring; 11. protective ring; 12. control board; 13. slider; 14. rotating shaft; 15. gear; 16. rack plate; 17. second spring; 18. airbag; 19. connecting trachea; 20. push plate; 21. insertion rod; 22. plug; 23. slide groove; 24. bronchial auxiliary tube. DETAILED DESCRIPTION

[0034] 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.

[0035] like Figures 1 to 8 As shown, in an embodiment of the present invention, a double-lumen endobronchial cannula comprises a cannula body 1, an external tube 2 is fixedly mounted on one end of the cannula body 1, two external tubes 2 are provided, a tracheal cuff 3 and a bronchial cuff 4 are provided on one end of the cannula body 1 away from the external tube 2, a lubrication component is provided inside the tracheal cuff 3, a bronchial auxiliary tube 24 is installed inside the bronchial cuff 4, and the bronchial auxiliary tube 24 is connected to the cannula body 1;

[0036] Among them, the lubrication component includes a plugging head 6 arranged inside the tracheal cuff 3, the plugging heads 6 are evenly arranged, each of the plugging heads 6 is provided with a liquid outlet cavity 7, each of the liquid outlet cavity 7 is provided with a control component, the plugging head 6 is slidably connected to the tracheal cuff 3, and the tracheal cuff 3 is provided with a liquid storage cavity 5.

[0037] The expansion of the tracheal cuff 3 and the bronchial cuff 4 can block the heart, lungs and trachea, mainly used to separate the left and right lungs, and selectively perform single-lung ventilation to provide effective ventilation and prevent blood and sputum from the diseased lung from flowing into the healthy lung. At the same time, the shrinkage of the lung on the operated side can provide good exposure for the surgeon.

[0038] When the left lung bleeds, the sealing effect of the bronchial cuff 4 protects the right lung from being contaminated by the blood in the left lung, thereby ensuring ventilation of the right lung;

[0039] When the right lung is bleeding, the sealing effect of the bronchial cuff 4 protects the left lung from being contaminated by the blood of the right lung, thereby ensuring the ventilation of the left lung.

[0040] The liquid storage chamber 5 is pre-filled with a medical grade lubricant;

[0041] By setting the lubrication component, when the double-lumen endobronchial cannula is used, after the cannula body 1 is inserted into the patient's body, the end of the blocking head 6 is pressed by the inner wall of the patient's body and slides into the tracheal cuff 3, so that one end of the liquid outlet cavity 7 slides into the liquid storage cavity 5, and the lubricant preset in the liquid storage cavity 5 enters the liquid outlet cavity 7 and is discharged, so as to lubricate the tracheal cuff 3 and the inner wall of the patient's body, so as to reduce the risk of damage to the patient's airway mucosa or laryngeal tissue, thereby improving the comfort of the equipment when used.

[0042] like Figures 1 to 8 As shown, the control component includes a control board 12 arranged inside the liquid outlet chamber 7, a rotating shaft 14 is fixedly connected to one side of the control board 12, a gear 15 is fixedly installed on the outer wall of the rotating shaft 14, a rack plate 16 is meshingly connected to one side of the gear 15, and the rack plate 16 is fixedly installed inside the plugging head 6.

[0043] Through the setting of the control component, when the lubricant in the liquid storage chamber 5 enters the liquid outlet chamber 7, the lubricant flows outward to push the control plate 12 to move, the movement of the control plate 12 drives the movement of the rotating shaft 14, the movement of the rotating shaft 14 drives the movement of the gear 15, the gear 15 engages with the rack plate 16 and rotates, thereby rotating the control plate 12 ninety degrees and the lubricant is discharged smoothly.

[0044] like Figure 3 , Figure 4 and Figure 5 As shown, one end of the blocking head 6 is fixedly connected to a connecting rod 8, one end of the connecting rod 8 is fixedly installed with a limiting plate 9, the limiting plate 9 is slidably installed inside the tracheal cuff 3, and a first spring 10 is arranged on one side of the limiting plate 9.

[0045] When the friction between the device and the patient's body wall is large, the blocking head 6 is forced to slide into the tracheal cuff 3 to drive the connecting rod 8 to move. The movement of the connecting rod 8 drives the limiting plate 9 to slide inside the tracheal cuff 3 and forces the first spring 10 to deform under force to store elastic potential energy.

[0046] When the friction between the device and the inner wall of the patient's body decreases, the first spring 10 releases the elastic potential energy to push the limit plate 9, so that the blocking head 6 moves back to its original position and stops discharging the lubricant.

[0047] like Figure 6 As shown, a slider 13 is installed on the outer wall of the rotating shaft 14 , and the slider 13 is slidably installed inside the plugging head 6 . A second spring 17 is provided on one side of the slider 13 .

[0048] In the initial state, the elasticity of the second spring 17 causes one side of the slider 13 to fit against the inner wall of the plugging head 6, so that the control board 12 blocks the inner wall of the liquid outlet cavity 7, preventing the body fluid on the inner wall of the patient's body from entering the liquid outlet cavity 7 during the movement of the cannula body 1;

[0049] When the lubricant is discharged and the control plate 12 is pushed to move, the slider 13 slides and forces the second spring 17 to deform and store elastic potential energy, and the elastic potential energy is released by the second spring 17 to reset.

[0050] like Figure 6 As shown, the slide block 13 is rotatably connected to the rotating shaft 14 .

[0051] like Figure 3 , Figure 4 and Figure 5 As shown, a protective ring 11 is installed on the outer wall of the blocking head 6 , and the protective ring 11 is embedded in the interior of the tracheal cuff 3 .

[0052] The protective ring 11 is elastically arranged, the outer ring of the protective ring 11 is fixedly connected to the inner wall of the tracheal cuff 3, and the inner ring of the protective ring 11 is fixedly connected to the outer wall of the plugging head 6;

[0053] When the tracheal cuff 3 is inflated and deformed, there may be a misfit between the outer wall of the sealing head 6 and the tracheal cuff 3. The deformation of the tracheal cuff 3 drives the protective ring 11 to stretch, so that the protective ring 11 is located between the sealing head 6 and the tracheal cuff 3 to prevent the internal lubricant from leaking out when the tracheal cuff 3 is deformed.

[0054] like Figure 3 As shown, an air bag 18 is arranged inside the liquid storage cavity 5 , and a connecting air tube 19 is fixedly connected to one side of the air bag 18 , and the connecting air tube 19 is embedded in the interior of the tracheal cuff 3 .

[0055] When the tracheal cuff 3 is inflated, a portion of the gas is discharged into the interior of the airbag 18 through the connecting trachea 19, so that the airbag 18 expands, the pressure in the liquid storage chamber 5 increases, and the lubricant in the liquid storage chamber 5 is squeezed and can be discharged more easily.

[0056] like Figure 3 As shown, a push plate 20 is provided on one side of the airbag 18 , and the push plate 20 is slidably installed inside the liquid storage chamber 5 , and an insertion rod 21 is fixedly installed on one side of the push plate 20 , and a plug 22 is fixedly installed on one end of the insertion rod 21 , and the plug 22 is embedded in the inside of the slide groove 23 .

[0057] When the airbag 18 is inflated, it pushes the push plate 20 to move in the liquid storage chamber 5, so that the push plate 20 pushes the lubricant in the liquid storage chamber 5 to facilitate discharge;

[0058] At the same time, the movement of the push plate 20 drives the plug 22 to slide into the slide groove 23, and the slide groove 23 is engaged with the slide groove 23, so that the push plate 20 does not return to the original position after moving to the side of the airbag 18;

[0059] This prevents the airbag 18 from retracting when the tracheal cuff 3 is deflated, and the pressure in the liquid storage chamber 5 is not reduced enough to discharge the lubricant, thereby improving the stability of the lubricant discharge.

[0060] like Figure 8 As shown, the plug 22 is configured in a truncated cone shape.

[0061] A method for using a double-lumen endobronchial tube comprises the following steps:

[0062] S1: When the double-lumen endobronchial tube is used, after the tube body 1 is inserted into the patient's body, the end of the plugging head 6 is pressed by the patient's body wall and slides into the tracheal cuff 3, so that one end of the liquid outlet cavity 7 slides into the liquid storage cavity 5, and the lubricant preset in the liquid storage cavity 5 enters the liquid outlet cavity 7. The lubricant flows outward to push the control plate 12 to move, and the movement of the control plate 12 drives the movement of the rotating shaft 14, and the movement of the rotating shaft 14 drives the movement of the gear 15. The gear 15 meshes with the rack plate 16 and rotates, so that the control plate 12 rotates ninety degrees, and the lubricant is smoothly discharged to lubricate the tracheal cuff 3 and the patient's body wall;

[0063] S2: When the plugging head 6 is forced to slide into the tracheal cuff 3, the connecting rod 8 is driven to move. The movement of the connecting rod 8 drives the limiting plate 9 to slide inside the tracheal cuff 3, and forces the first spring 10 to deform under force to store elastic potential energy;

[0064] S3: When the lubricant is discharged and the control plate 12 is pushed to move, the slider 13 slides and forces the second spring 17 to deform and store elastic potential energy;

[0065] S4: When the friction between the device and the patient's body wall decreases, the first spring 10 releases elastic potential energy to push the limit plate 9, so that the plugging head 6 moves back to its original position, stops discharging the lubricant, and at the same time releases elastic potential energy to reset it through the second spring 17;

[0066] S5: When the tracheal cuff 3 is inflated, a portion of the gas is discharged into the interior of the airbag 18 through the connecting trachea 19, causing the airbag 18 to expand and push the push plate 20 to move in the liquid storage chamber 5. The movement of the push plate 20 drives the plug 22 to slide into the slide groove 23, and the slide groove 23 engages with the slide groove 23 to maintain the pressure in the liquid storage chamber 5, which helps to subsequently discharge the lubricant in the liquid storage chamber 5 to continue the lubrication work.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-lumen endobronchial cannula, comprising a cannula body (1), characterized in that: An external tube (2) is fixedly mounted on one end of the cannula body (1), two external tubes (2) are provided, a tracheal cuff (3) and a bronchial cuff (4) are provided on one end of the cannula body (1) away from the external tube (2), a lubricating component is provided inside the tracheal cuff (3), a bronchial auxiliary tube (24) is installed inside the bronchial cuff (4), and the bronchial auxiliary tube (24) is connected to the cannula body (1); The lubrication component comprises a plugging head (6) arranged inside the tracheal cuff (3), the plugging heads (6) are evenly arranged, each of the plugging heads (6) is provided with a liquid outlet cavity (7), each of the liquid outlet cavity (7) is provided with a control component, the plugging head (6) is slidably connected to the tracheal cuff (3), and the tracheal cuff (3) is provided with a liquid storage cavity (5).

2. A double-lumen endobronchial cannula according to claim 1, characterized in that: The control assembly comprises a control board (12) arranged inside the liquid outlet chamber (7); one side of the control board (12) is fixedly connected to a rotating shaft (14); a gear (15) is fixedly mounted on the outer wall of the rotating shaft (14); one side of the gear (15) is meshingly connected to a rack plate (16); and the rack plate (16) is fixedly mounted inside the plugging head (6).

3. A double-lumen endobronchial cannula according to claim 1, characterized in that: One end of the plugging head (6) is fixedly connected to a connecting rod (8), one end of the connecting rod (8) is fixedly mounted with a limiting plate (9), the limiting plate (9) is slidably mounted inside the tracheal cuff (3), and a first spring (10) is provided on one side of the limiting plate (9).

4. A double-lumen endobronchial cannula according to claim 2, characterized in that: A slider (13) is installed on the outer wall of the rotating shaft (14), and the slider (13) is slidably installed inside the plugging head (6). A second spring (17) is arranged on one side of the slider (13).

5. A double-lumen endobronchial cannula according to claim 4, characterized in that: The sliding block (13) is rotationally connected to the rotating shaft (14).

6. A double-lumen endobronchial cannula according to claim 1, characterized in that: The outer wall of the plugging head (6) is provided with a protective ring (11), and the protective ring (11) is embedded in the interior of the tracheal cuff (3).

7. A double-lumen endobronchial cannula according to claim 1, characterized in that: An air bag (18) is arranged inside the liquid storage chamber (5), and a connecting air tube (19) is fixedly connected to one side of the air bag (18), and the connecting air tube (19) is embedded in the interior of the tracheal cuff (3).

8. A double-lumen endobronchial cannula according to claim 7, characterized in that: A push plate (20) is provided on one side of the airbag (18), and the push plate (20) is slidably installed inside the liquid storage chamber (5). An insertion rod (21) is fixedly installed on one side of the push plate (20), and a plug (22) is fixedly installed on one end of the insertion rod (21), and the plug (22) is embedded in the inside of the slide groove (23).

9. A double-lumen endobronchial cannula according to claim 8, characterized in that: The plug (22) is configured in a truncated cone shape.

10. A method for using a double-lumen endobronchial cannula, the method being applicable to the double-lumen endobronchial cannula described in claims 1 to 9, characterized in that: The following steps are involved: S1: When the double-lumen endobronchial tube is used, after the tube body (1) is inserted into the patient's body, the end of the plugging head (6) is pressed by the inner wall of the patient's body and slides into the tracheal cuff (3), so that one end of the liquid outlet cavity (7) slides into the liquid storage cavity (5), and the lubricant preset in the liquid storage cavity (5) enters the liquid outlet cavity (7). The lubricant flows outward to push the control plate (12) to move, and the movement of the control plate (12) drives the movement of the rotating shaft (14), and the movement of the rotating shaft (14) drives the movement of the gear (15). The gear (15) and the rack plate (16) mesh and rotate, thereby rotating the control plate (12) by ninety degrees, and the lubricant is smoothly discharged to lubricate the tracheal cuff (3) and the inner wall of the patient's body; S2: When the blocking head (6) is forced to slide into the tracheal cuff (3), the connecting rod (8) is driven to move. The movement of the connecting rod (8) drives the limiting plate (9) to slide inside the tracheal cuff (3), and forces the first spring (10) to deform under force to store elastic potential energy; S3: When the lubricant is discharged and the control plate (12) is pushed to move, the slider (13) slides and forces the second spring (17) to deform and store elastic potential energy; S4: When the friction between the device and the inner wall of the patient's body decreases, the first spring (10) releases elastic potential energy to push the limit plate (9), thereby causing the plugging head (6) to move and reset, stopping the discharge of lubricant, and at the same time releasing elastic potential energy to reset it through the second spring (17); S5: When the tracheal cuff (3) is inflated, a portion of the gas is discharged into the interior of the airbag (18) through the connecting trachea (19), causing the airbag (18) to expand, pushing the push plate (20) to move in the liquid storage chamber (5). The movement of the push plate (20) drives the plug (22) to slide into the slide groove (23), and the slide groove (23) engages with the slide groove (23), so that the pressure in the liquid storage chamber (5) is maintained, which helps to discharge the lubricant in the liquid storage chamber (5) to continue the lubrication work.

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