A suction catheter with freely controllable direction via tracheostomy cannula

Abstract

This invention proposes a suction catheter with freely controllable direction via a tracheostomy cannula, comprising a tube body, a negative pressure interface connected to the head of the tube body, and a guide portion bent to one side at the end of the tube body. The guide portion bends from 3-4 cm away from the end of the tube body, and the angle between the guide portion and the tube body is 25-35°. The tube body and the negative pressure interface are connected end-to-end to form a suction channel. The suction catheter with freely controllable direction via a tracheostomy cannula proposed in this application has a bent guide portion at the end of the tube body, which facilitates precise targeting of sputum and fine adjustment of the suction direction, reducing patient positioning adjustments and saving emergency time. The negative pressure interface allows for precise adjustment of negative pressure to adapt to different patients' sputum and tracheal conditions. The guide portion has multiple suction ports, enabling comprehensive suction and reducing the risk of mucosal damage. The tube body has graduations to facilitate control of insertion depth, and the anti-slip texture on the interface ensures stable connection, thus improving overall practicality and patient experience.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a suction catheter whose direction can be freely controlled via a tracheostomy cannula. Background Technology

[0002] In the field of modern medicine, especially in the treatment of critically ill patients, tracheotomy and insertion of an artificial tracheostomy cannula is a crucial procedure. Its purpose is to create an artificial airway for the patient to relieve airway obstruction, improve ventilation, facilitate sputum suction, effectively control lung infections, and thus significantly improve lung function.

[0003] However, due to the unique anatomical structure of the human body, the left and right main bronchi exhibit obvious asymmetry, with differences in diameter, direction, and branching angle. At the same time, after the artificial tracheostomy cannula is implanted into the trachea, its relative position to the trachea is not fixed and is affected by various factors such as changes in the patient's body position, neck movements, and even respiratory movements.

[0004] Currently available disposable suction catheters, while able to be successfully inserted into the main bronchus for suctioning with the help of a tracheostomy cannula, cannot flexibly change direction. In most cases, they can only enter the right main bronchus. This prevents the left lung, which has a more complex structure and is relatively more difficult to drain sputum, from receiving accurate and sufficient suctioning. As a result, lung infections are difficult to control, causing patients to suffer from pain for a long time and further increasing the medical burden and resulting in additional financial expenses.

[0005] Chinese utility model patent CN217745156U discloses a directional suction tube, including a main suction tube and a suction tube connector connected to the main suction tube. The end of the main suction tube is curved, or the end of the main suction tube is fitted with a curved outer tube. The outer tube may not have a fixed curvature, and the outer tube is provided with a metal strip to adjust the curvature of the end of the suction tube. Although the end of the suction tube is curved, its curvature shape is similar to a hook, which cannot well adapt to the structure of the left and right main bronchi of the human body. The operator will still encounter obstacles when adjusting the direction of the suction tube.

[0006] Chinese utility model patent CN213219607U discloses a curved suction tube, including a suction tube body. The front end of the suction tube body is provided with a guide bend that forms a bending angle with the suction tube body. The guide bend is closed. At least two suction holes are provided on the side of the suction tube body near the guide bend. The rear end of the suction tube body is provided with a connector for connecting to a ventilator. The end of the suction tube has a bend with a certain bending angle, but its bend is a closed structure. Suctioning is carried out only by the suction holes on the side, which can easily cause blockage and slow suctioning. Utility Model Content

[0007] In view of the problems of existing disposable suction catheters being unable to change direction flexibly and having slow suctioning after passing through the tracheostomy cannula, this utility model proposes a suction catheter whose direction can be freely controlled after passing through the tracheostomy cannula, in order to solve the above problems.

[0008] This application proposes a suction tube with arbitrarily controllable direction via a tracheostomy cannula, comprising a tube body, a negative pressure interface connected to the head of the tube body, and a guide section bent to one side at the end of the tube body. The guide section bends from 3-4 cm away from the end of the tube body, and the angle between the guide section and the tube body is 25-35°. The tube body and the negative pressure interface are connected end to end to form a suction channel.

[0009] By adopting the above technical solution, the guide part and the tube body form a specific angle, which allows the suction catheter to effectively suction sputum from different directions by rotating or slightly adjusting the position of the tube body after insertion into the tracheostomy tube. Unlike traditional suction catheters, it does not require frequent adjustment of the patient's head or body position, which greatly saves operation time and manpower. Especially in emergency situations, it can clear airway secretions more quickly. For operators, it can reduce the difficulty of operation.

[0010] In some specific embodiments, the included angle between the guide and the tube body is 25-30°.

[0011] By adopting the above technical solution, within this angle range, the guide part can provide just the right directional guidance, making it easier for the suction tube to accurately point to the location of the sputum. When using it, the operator can make fine adjustments to the suction direction by rotating and pushing the tube with a small amplitude. Compared with a larger angle, the 25-30° angle will not make the guide part of the suction tube too prominent or difficult to control during operation. The operator can operate more naturally and smoothly without having to use excessive force or complicated techniques to adjust the direction of the suction tube, reducing the difficulty of operation and improving work efficiency.

[0012] In some specific embodiments, a negative pressure adjustment port is also vertically provided on the outer surface of the middle part of the negative pressure interface. The negative pressure adjustment port is connected to the suction channel, and the bending direction of the guide part is on the same side as the negative pressure adjustment port. By adopting the above technical solution, operators can conveniently adjust the negative pressure during suctioning in real time through the negative pressure adjustment port. Different patients have different sputum viscosity and tracheal conditions. For example, for patients with thicker sputum, the negative pressure can be appropriately increased to ensure that the sputum can be suctioned out smoothly; while for patients with more fragile tracheal mucosa or relatively thin sputum, the negative pressure can be decreased to avoid damage to the tracheal mucosa due to excessive suction or excessive air suctioning, thus achieving precise matching of suctioning pressure.

[0013] In some specific embodiments, a plug adapted to the negative pressure regulating port is also included, and the plug is movably connected to the outer surface of the negative pressure regulating port.

[0014] By adopting the above technical solution, the design of the movable connection between the plug and the outer side of the negative pressure regulating port allows the operator to adjust the fitting depth between the plug and the negative pressure regulating port when the negative pressure needs to be adjusted. This allows external air to enter and change the negative pressure. Once a suitable negative pressure is reached, the plug can be pushed back appropriately to reduce the amount of air entering and maintain a stable negative pressure. When the plug is completely pulled out of the negative pressure regulating port, there is no need to worry about the plug being lost, which greatly improves the operator's work efficiency during the suctioning process.

[0015] In some specific embodiments, the negative pressure regulating port is also connected to an adjusting knob, which is a button or a knob.

[0016] By adopting the above technical solutions, whether using buttons or knobs, the adjustment knobs allow medical staff to achieve more precise control over the negative pressure. For example, knob-type adjustment knobs can finely adjust the increase or decrease of negative pressure by rotating the angle. For some situations with stricter requirements for negative pressure, such as when the patient's sputum viscosity is moderate but the tracheal mucosa is sensitive, the most suitable negative pressure value can be accurately found. Button-type adjustment knobs can set the corresponding negative pressure adjustment rules by pressing the button a few times and for a certain duration, which can also achieve the purpose of precise adjustment and ensure that the sputum suction operation is performed under appropriate negative pressure conditions.

[0017] In some specific embodiments, the end of the guide portion has a first suction port, which is connected to the suction channel, and the end sidewall of the guide portion is also evenly provided with a plurality of second suction ports.

[0018] By adopting the above technical solution, multiple suction ports work simultaneously, so that the negative pressure during suctioning is applied to a larger area, avoiding excessive local pressure caused by suctioning with a single port, reducing the risk of damage to the respiratory mucosa, and also clearing sputum more evenly. Several second suction ports evenly distributed on the side wall of the end of the guide can suction sputum from different angles, making suctioning more comprehensive.

[0019] In some specific embodiments, the outer surface of the tube is provided with several scale lines at equal intervals, and the scale lines are arranged from the head of the tube to the guide section.

[0020] By adopting the above technical solution, when the operator inserts the suction catheter into the patient's trachea through the tracheostomy tube for suctioning, the operator can clearly and accurately know the depth to which the suction catheter has been inserted by observing the scale lines on the tube. This is especially important for patients of different ages and body types, because their tracheal length and other conditions vary. The scale lines can help the operator insert the suction catheter to the appropriate depth according to actual needs, ensuring the effectiveness of the suctioning operation.

[0021] In some specific embodiments, the outer surface of the negative pressure interface is also provided with anti-slip texture.

[0022] By adopting the above technical solution, the suction tube is connected to the inner wall of the external negative pressure equipment through a negative pressure interface. The anti-slip texture can effectively prevent the suction tube from disconnecting from the negative pressure equipment during the suctioning process, ensuring the connection stability of the suctioning process and improving the suctioning effect.

[0023] The advantages of this application compared to the prior art are as follows: The suction catheter proposed in this application, which allows for arbitrary direction control via a tracheostomy cannula, offers numerous significant advantages. Its guide section forms a specific angle with the tube body, particularly between 25-35°, precisely locating the sputum and allowing operators to finely adjust the suction direction with small movements, reducing operational difficulty, increasing efficiency, minimizing patient positioning adjustments, and saving emergency time. The negative pressure interface features a negative pressure adjustment port connecting to the suction channel, adaptable to plugging and with a movable connection. A button or knob can also be added to the negative pressure adjustment port for convenient and precise adjustment of negative pressure, adapting to different patients' sputum and tracheal conditions, and protecting the mucosa. Multiple suction ports are located at the end of the guide section and on its sidewalls, increasing the suction inlet area, dispersing negative pressure, ensuring comprehensive suction, and reducing the risk of mucosal damage. The graduated lines on the tube body help operators accurately control the insertion depth, adapting to different patients' tracheal differences and ensuring effective suction. The anti-slip texture on the negative pressure interface enhances the stability of the connection with negative pressure equipment, preventing disconnection and ensuring smooth suction, comprehensively improving the practicality of the suction catheter and the patient's treatment experience. Attached Figure Description

[0024] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many anticipated advantages of the embodiments will be readily recognized as they become better understood through reference to the following detailed description. Elements in the drawings are not necessarily to scale. The same reference numerals refer to corresponding similar parts.

[0025] Figure 1 This is a schematic diagram of the suction tube structure according to an embodiment of this application; Figure 2This is a schematic diagram of the guide section structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the suction catheter and tracheostomy tube in accordance with an embodiment of this application.

[0026] The meaning of each number in the diagram: Tube body 01, negative pressure interface 02, guide part 03, negative pressure adjustment port 04, plug 05, first suction port 06, second suction port 07, scale line 08, anti-slip texture 09. Detailed Implementation

[0027] In the following detailed description, reference is made to the accompanying drawings, which form part of the detailed description and illustrate illustrative specific embodiments in which the present invention may be practiced. In this regard, directional terms such as “top,” “bottom,” “left,” “right,” “up,” “down,” etc., are used with reference to the orientation of the described figures. Because components of the embodiments can be positioned in several different orientations, directional terms are used for illustrative purposes and are by no means limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present invention. Therefore, the following detailed description should not be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

[0028] This application proposes a suction catheter whose direction can be freely controlled via a tracheostomy cannula. Figure 1 A schematic diagram of a suction catheter structure according to an embodiment of this application is shown, as follows. Figure 1 As shown, the suction tube includes a tube body 01, a negative pressure port 02 connected to the head of the tube body 01, and a guide part 03 bent to one side at the end of the tube body 01. The guide part 03 bends from 3-4 cm away from the end of the tube body 01, and the angle between the guide part 03 and the tube body 01 is 25-35°. The tube body 01 and the negative pressure port 02 are connected end to end to form a suction channel.

[0029] By adopting the above technical solution, the guide part 03 and the tube body 01 form a specific angle, allowing the suction catheter to effectively suction sputum from different directions by rotating or slightly adjusting the position of the tube body 01 after insertion into the tracheostomy cannula. This eliminates the need for frequent adjustments to the patient's head or body position as with traditional suction catheters, significantly saving operation time and manpower, especially in emergency situations where airway secretions can be cleared more quickly. For operators, this also reduces the difficulty of operation. In some specific embodiments, the included angle between the guide portion 03 and the tube body 01 is 25-30°.

[0030] In this embodiment, the angle between the guide part 03 and the tube body 01 is 25-30°, which is only one of the preferred ranges. In actual application, a more precise angle can be selected within this range according to the usage scenario.

[0031] By adopting the above technical solution, within this angle range, the guide part 03 can provide just the right directional guidance, making it easier for the suction tube to accurately point to the location of the sputum. When using it, the operator can make fine adjustments to the suction direction by rotating and pushing the tube body 01 with a small amplitude. Compared with a larger angle, the 25-30° angle will not make the guide part 03 of the suction tube too prominent or difficult to control during operation. The operator can operate more naturally and smoothly without having to use excessive force or complicated techniques to adjust the direction of the suction tube, reducing the difficulty of operation and improving work efficiency.

[0032] In some specific embodiments, the outer surface of the middle part of the negative pressure interface 02 is also provided with a negative pressure adjustment port 04, which is connected to the suction channel. The bending direction of the guide part 03 and the negative pressure adjustment port 04 are located on the same side of the tube body 01, which makes it easier to determine the bending direction of the guide part 03 inside the body from outside the body, making it easier to operate.

[0033] Specifically, during the suctioning process, the operator can conveniently adjust the negative pressure in real time through the negative pressure adjustment port 04 according to the patient's age, symptoms, and other actual conditions. Different patients have different sputum viscosity and tracheal conditions. For example, for patients with thicker sputum, the negative pressure can be appropriately increased to ensure that the sputum can be suctioned out smoothly; while for patients with more fragile tracheal mucosa or relatively thin sputum, the negative pressure can be decreased to avoid damage to the tracheal mucosa due to excessive suction or suctioning out too much air too quickly, thus achieving precise matching of suctioning pressure.

[0034] In some specific embodiments, a plug 05 adapted to the negative pressure regulating port 04 is also included, and the plug 05 is movably connected to the outer surface of the negative pressure regulating port 04.

[0035] Specifically, the sealing plug 05 is one of the preferred embodiments. The structure is relatively simple and is a simple and efficient configuration.

[0036] By adopting the above technical solution, the design of the movable connection between the plug 05 and the outer side of the negative pressure regulating port 04 allows the operator to adjust the fitting depth between the plug 05 and the negative pressure regulating port 04 when the negative pressure needs to be adjusted. This allows external air to enter and change the negative pressure. Once a suitable negative pressure is reached, the plug 05 can be pushed back appropriately to reduce the amount of air entering and maintain a stable negative pressure. When the plug 05 is completely pulled out of the negative pressure regulating port 04, there is no need to worry about the plug 05 being lost, which greatly improves the operator's work efficiency during the suctioning process.

[0037] In some specific embodiments, the negative pressure regulating port 04 is also connected to an adjusting knob (not shown in the figure), which is a button or a knob.

[0038] Specifically, the negative pressure adjustment port 04 of the suction catheter can be replaced with an adjustment knob instead of the aforementioned plug 05, allowing for more precise adjustment of the negative pressure. This makes it suitable for situations with stricter negative pressure requirements, enabling the suction catheter to adapt to more usage scenarios.

[0039] By adopting the above technical solutions, whether using buttons or knobs, the adjustment knobs allow medical staff to achieve more precise control over the negative pressure. For example, knob-type adjustment knobs can finely adjust the increase or decrease of negative pressure by rotating the angle. For some situations with stricter requirements for negative pressure, such as when the patient's sputum viscosity is moderate but the tracheal mucosa is sensitive, the most suitable negative pressure value can be accurately found. Button-type adjustment knobs can set the corresponding negative pressure adjustment rules by pressing the button a few times and for a certain duration, which can also achieve the purpose of precise adjustment and ensure that the sputum suction operation is performed under appropriate negative pressure conditions.

[0040] In some practical applications, operators mainly adjust the negative pressure by directly adjusting the air pressure of the external negative pressure device. The negative pressure adjustment port 04 mainly acts as a switch. When the suction tube reaches the appropriate position, the operator presses their finger on the negative pressure adjustment port 04 to seal the opening, and the sputum can be suctioned out. After the sputum is suctioned out, the operator immediately releases their finger to minimize the damage of negative pressure to the tracheal mucosa. Therefore, the negative pressure adjustment port 04 is not only limited to the operation of fine-tuning negative pressure, but can also be used as an operating switch for sputum suction.

[0041] In some specific embodiments, the outer surface of the tube body 01 is provided with several scale lines 08 at equal intervals, and the scale lines 08 are arranged from the head of the tube body 01 to the guide part 03.

[0042] Specifically, the length of the suction tube 01 is not limited and can be determined according to the usage scenario. The accuracy and density of the scale lines 08 can be adjusted according to the usage scenario. The intervals and densities shown in the figure are only examples.

[0043] By adopting the above technical solution, when the operator inserts the suction catheter into the patient's trachea through the tracheostomy tube for suctioning, the operator can clearly and accurately know the depth to which the suction catheter has been inserted by observing the scale line 08 on the tube body 01. This is especially important for patients of different ages and body types, because their tracheal length and other conditions vary. The scale line 08 can help the operator insert the suction catheter to the appropriate depth according to actual needs, ensuring the effectiveness of the suctioning operation.

[0044] In some specific embodiments, the outer surface of the negative pressure interface 02 is also provided with anti-slip texture 09.

[0045] By adopting the above technical solution, the suction tube is connected to the inner wall of the external negative pressure equipment through the negative pressure interface 02. The anti-slip texture 09 can effectively prevent the suction tube from disconnecting from the negative pressure equipment during the suctioning process, ensuring the connection stability of the suctioning process and improving the suctioning effect.

[0046] Figure 2 A schematic diagram of the guide section structure according to an embodiment of this application is shown, as follows: Figure 1-2 As shown, the end of the guide part 03 has a first suction port 06, which is connected to the suction channel, and the end side wall of the guide part 03 is also evenly provided with a number of second suction ports 07.

[0047] Specifically, the use of multiple suction ports reduces the probability of a single suction port becoming blocked by sputum. When one or more suction ports are partially blocked by sputum, the other suction ports can still continue to operate, ensuring the continuity of the suctioning process and reducing the need for frequent interruptions in suctioning due to port blockage. At the same time, the suction force of multiple suction ports on the respiratory mucosa is relatively dispersed, which is less pulling and irritating to the mucosa compared to a single large-diameter suction port directly acting on the mucosal surface. This reduces the possibility of damage to the respiratory mucosa during suctioning and helps protect the patient's respiratory mucosa.

[0048] By adopting the above technical solution, multiple suction ports work simultaneously, so that the negative pressure during suctioning is applied to a larger area, avoiding excessive local pressure caused by suctioning with a single port, reducing the risk of damage to the respiratory mucosa, and also clearing sputum more evenly. Several second suction ports 07, which are evenly distributed on the side wall of the end of the guide section 03, can suction sputum from different angles, making suctioning more comprehensive.

[0049] Figure 3 A schematic diagram of the fitting of a suction catheter and a tracheostomy cannula according to an embodiment of this application is shown, as follows. Figure 1-3 As shown, when using the device, the operator connects the negative pressure interface 02 to the tubing of the external negative pressure equipment, and inserts the tube body 01 of the suction catheter into the patient's airway through the tracheostomy cannula. By pulling, stretching, and rotating, the guide part 03 can easily enter the left and right main bronchi. The operator judges the depth of insertion of the suction catheter by observing the scale line 08, and performs suctioning through the first suction port 06 and the second suction port 07. The negative pressure can be adjusted through the negative pressure adjustment port 04 to complete the suctioning process.

[0050] The suction catheter described in this application can be used in conjunction with a tracheostomy cannula. In medical practice, many critically ill patients require tracheostomy and placement of an artificial tracheostomy cannula to facilitate suctioning, control lung infections, and improve lung function. Due to the asymmetry of the anatomical structure of the left and right main bronchi and the non-fixed relative position of the artificial tracheostomy cannula to the trachea, ordinary suction catheters cannot be flexibly controlled to enter the left and right main bronchi. Most of them can only enter the right main bronchi, resulting in the left lung not being effectively suctioned. This leads to the ineffective control of lung infections, increases patient suffering, and increases economic expenses.

[0051] The suction catheter designed in this application combines the length and diameter characteristics of an artificial tracheostomy cannula with the anatomical features of the left and right bronchi in the human body. The operator can freely insert the suction catheter into the left or right main bronchus to perform thorough suctioning; the effectiveness rate is over 90%, which greatly improves the quality of precise and individualized treatment in clinical medical work.

[0052] The advantages of this application compared to the prior art are as follows: The suction catheter proposed in this application, which allows for arbitrary direction control via a tracheostomy cannula, offers numerous significant advantages. Its guide section 03 forms a specific angle with the tube body 01, particularly between 25-35°, precisely pointing to the sputum location. This allows operators to finely adjust the suction direction with small movements, reducing operational difficulty and increasing efficiency. It also minimizes patient positioning adjustments, saving emergency time. The negative pressure interface 02 is equipped with a negative pressure adjustment port 04 connecting to the suction channel, which is compatible with and movably connected to the plug 05. A button or knob can also be added to the negative pressure adjustment port 04. The adjustment knob allows for convenient and precise adjustment of negative pressure, adapting to different patients' sputum and tracheal conditions while protecting the mucosa. Multiple suction ports are located at the end and sidewalls of the guide section 03, increasing the suction inlet area, dispersing negative pressure, ensuring comprehensive suction, and reducing the risk of mucosal damage. The graduation lines 08 on the tube body 01 help operators accurately control the insertion depth, adapting to differences in the trachea of ​​different patients and ensuring effective suction. The anti-slip texture 09 on the outside of the negative pressure interface 02 enhances the stability of the connection with negative pressure equipment, preventing disconnection and ensuring smooth suction, comprehensively improving the practicality of the suction catheter and the patient's treatment experience.

[0053] Obviously, those skilled in the art can make various modifications and changes to the embodiments of this utility model without departing from the spirit and scope of this utility model. In this way, this utility model is also intended to cover such modifications and changes if they fall within the scope of the claims of this utility model and their equivalents. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used for profit. Any reference numerals in the claims should not be considered as limiting the scope.

Claims

1. A suction catheter with arbitrarily controllable direction via a tracheostomy cannula, characterized in that, The tube includes a tube body, the head of which is connected to a negative pressure port, and the end of the tube body is bent to one side to form a guide section. The guide section bends from 3-4 cm away from the end of the tube body, and the angle between the guide section and the tube body is 25-35°. The tube body and the negative pressure port are connected end to end to form a suction channel.

2. The sputum tube of claim 1, wherein, The angle between the guide portion and the tube body is 25-30°.

3. The sputum tube of claim 1, wherein, The outer surface of the negative pressure interface is also vertically provided with a negative pressure adjustment port, which is connected to the suction channel, and the bending direction of the guide part is on the same side as the negative pressure adjustment port.

4. The sputum tube of claim 3, wherein, It also includes a plug adapted to the negative pressure regulating port, the plug being movably connected to the outer surface of the negative pressure regulating port.

5. The sputum tube of claim 3, wherein, The negative pressure regulating port is also connected to an adjusting knob, which can be a button or a rotary knob.

6. The sputum tube of claim 1, wherein, The guide portion has a first suction port at its end, which is connected to the suction channel, and the guide portion also has several second suction ports evenly distributed on its end sidewall.

7. The sputum tube of claim 1, wherein, The outer surface of the tube is provided with several scale lines at equal intervals, and the scale lines are arranged from the head of the tube to the guide portion.

8. The sputum tube of claim 1, wherein, The outer surface of the negative pressure interface is also provided with anti-slip texture.

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