Tracheal catheter capable of preventing flushing fluid from entering esophagus

Abstract

The invention discloses a tracheal catheter capable of preventing flushing fluid from entering an esophagus. The tracheal catheter is suitable for operations of oral cavities, nasal cavities, neurosurgical skull bases and the like. Comprising a tracheal catheter module and a partition cuff module, the tracheal catheter module comprises a tracheal catheter body, a connector, an air bag and a first inflation tube. The connector, the air bag and the first inflation tube are arranged on the tracheal catheter body. The partition cuff module comprises a cuff, a diaphragm layer, a second inflation tube and a suction tube, the cuff is arranged at the tongue root position of the tracheal catheter body, and a diaphragm layer hole with an overflowing hole is formed in the upper side face of the cuff; a second inflating tube and a suction tube are arranged on the tracheal catheter body; when the cuff is inflated and expanded, the internal air pressure of the cuff is low pressure, the middle of the cuff is sunken downwards, and the periphery of the cuff is tilted and clings to the mucosa of the throat of a patient. The tracheal catheter effectively blocks the connection between the oral cavity and the esophagus, prevents flushing fluid from entering the esophagus and the stomach, and has important significance for improving the safety and success rate of oral cavity and neurosurgery skull base operations.

Description

Technical Field

[0001] The present invention relates to the field of tracheal catheters, and particularly to a tracheal catheter for preventing irrigation fluid from entering the esophagus. Background Art

[0002] During nasal surgery, oral surgery, and neurosurgical skull base surgery, a large amount of irrigation fluid (such as normal saline, povidone iodine, etc.) is often required to irrigate the surgical area during the operation to remove blood, tissue debris, etc. and keep the surgical field clear. However, since the patient is usually in the supine position, the irrigation fluid is likely to accumulate in the oral cavity along the posterior pharyngeal wall and then flow into the esophagus and stomach. This not only may stimulate the gastric mucosa, leading to postoperative complications such as nausea and vomiting, but also may cause aspiration pneumonia due to aspiration, seriously threatening the safety of the patient.

[0003] Currently, the main function of commonly used tracheal catheters in clinical practice is to maintain airway patency. However, their design can only seal the airway and cannot effectively block the connection between the oral cavity and the esophagus. During the operation, in order to prevent aspiration of irrigation fluid, doctors usually take the following auxiliary measures:

[0004] 1. Continuous suction: An aspiration tube is placed in the oral cavity, but direct contact with the mucosa is likely to cause damage, and the suction efficiency is limited, making it difficult to completely prevent liquid from flowing into the esophagus.

[0005] 2. Packing with gauze: Gauze is packed in the pharynx to block the liquid, but the operation is cumbersome, which may affect the surgical field, and there is a risk of gauze retention.

[0006] In the prior art, some improved tracheal catheters attempt to improve this problem by adding a cuff or a drainage structure, but there are still the following deficiencies:

[0007] 1. Single cuff design: The traditional cuff is only used to seal the airway and cannot adapt to the complex anatomical structure of the root of the tongue, resulting in an unsatisfactory sealing effect.

[0008] 2. Low suction efficiency: Although some catheters are provided with an aspiration channel, they lack an optimized liquid diversion structure, making them prone to blockage or liquid residue.

[0009] 3. Risk of mucosal injury: The aspiration tube directly contacts the tissue, and long-term negative pressure suction may cause mucosal ischemia or injury.

[0010] Therefore, there is an urgent need for a tracheal catheter that can simultaneously achieve airway management, esophageal isolation, and efficient suction to improve surgical safety and simplify the operation process. Summary of the Invention

[0011] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, an object of the present invention is to provide a tracheal catheter for preventing irrigation fluid from entering the esophagus.

[0012] The technical solution of the present invention is as follows: A tracheal catheter for preventing flushing fluid from entering the esophagus, comprising: a tracheal catheter module and a partition cuff module;

[0013] The tracheal catheter module includes a tracheal catheter body, a connector, an airbag and a first inflation tube. One end of the tracheal catheter body is a connection end, and the other end is an insertion end. The connector is provided at the connection end and is used to connect with a breathing device. The airbag is integrally provided on the tracheal catheter body and is adjacent to the insertion end. The tracheal catheter body is provided with the first inflation tube, and the first inflation tube is communicated with the airbag;

[0014] The partition cuff module includes a cuff, a diaphragm layer, a second inflation tube and a suction tube. The cuff is provided at the root of the tongue position of the tracheal catheter body. The cuff is located above the airbag and adjacent to the airbag. The upper side of the cuff is provided with the diaphragm layer. The lower side of the diaphragm layer is spaced apart from the upper side of the cuff to form a hollow suction cavity. The diaphragm layer is provided with a plurality of flow holes communicated with the suction cavity;

[0015] The tracheal catheter body is provided with the second inflation tube and the suction tube. The second inflation tube is communicated with the cuff, and the suction tube is communicated with the suction cavity;

[0016] When the cuff is inflated, the internal air pressure of the cuff is low pressure, the middle of the cuff is sunken downward, and the periphery is upturned and closely adheres to the mucous membrane of the patient's pharynx.

[0017] Further, the tracheal catheter body is provided with a scale, and the lower end of the cuff is located at the 13-15 cm scale of the tracheal catheter body.

[0018] Further, after the cuff is inflated, its internal air pressure is 20-25 cm water column.

[0019] Further, the upper and lower sides of the diaphragm layer and the upper side of the cuff are all coated with a hydrophobic coating.

[0020] Further, the cuff and the diaphragm layer are made of medical-grade polyvinyl chloride or silicone material.

[0021] Further, the distribution density of the flow holes in the middle area of the diaphragm layer is greater than the distribution density of the flow holes in the edge area of the diaphragm layer, and the aperture of the flow holes in the middle area of the diaphragm layer is greater than the aperture of the flow holes in the edge area of the diaphragm layer.

[0022] Further, the aperture of the flow holes in the middle area of the diaphragm layer is 0.5-1.0 mm, and the aperture of the flow holes in the edge area of the diaphragm layer is 0.2-0.5 mm.

[0023] Further, a plurality of support convex columns are provided in the suction cavity. The lower ends of the support convex columns are connected to the cuff, and the upper ends are connected to the diaphragm layer.

[0024] Further, the support convex columns and the cuff are integrally formed. The interiors of the support convex columns are hollow and communicate with the cuff.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. Effectively prevent the aspiration of flushing fluid: By providing a low-pressure high-volume cuff at the root of the tongue of the tracheal catheter, the present invention can effectively block the connection between the oral cavity and the esophagus during the operation, preventing the flushing fluid from flowing into the esophagus and the stomach. This design significantly reduces the risk of postoperative complications such as nausea and vomiting caused by a large amount of flushing fluid entering the esophagus and stomach of the patient, improving the safety and success rate of the operation. Compared with traditional tracheal catheters, the present invention has obvious advantages in preventing a large amount of flushing fluid, blood, and impurities from entering the esophagus, providing a more reliable airway management guarantee for oral and neurosurgical skull base surgeries.

[0027] 2. Simple operation: The tracheal catheter of the present invention pays attention to the convenience of operation in design. The inflation and deflation operations of the cuff are simple and fast. Doctors can adjust it at any time according to needs during the operation without additional complex equipment or cumbersome operation steps. In addition, by covering a perforated diaphragm layer on the surface of the partition cuff and providing a suction tube, the flushing fluid (such as povidone iodine) in the oral cavity can be directly sucked off, further simplifying the operation process and improving the operation efficiency.

[0028] 3. Simple structure: The tracheal catheter of the present invention fully considers cost control in design. The overall structure form is simple. While adding special functions, the manufacturing cost is not significantly increased. By simplifying the design, unnecessary complex devices (such as cuff pressure measurement devices) are avoided, making the present invention have a high cost performance. This not only facilitates the wide promotion and application in clinical medicine, but also reduces the incidence of postoperative complications of patients, reducing the additional medical expenses and treatment time caused by complications, and further improving the utilization efficiency of medical resources.

[0029] 4. Wide application range: The tracheal catheter of the present invention is not only applicable to oral, nasal, and neurosurgical skull base surgeries, but also can be used in other surgeries that need to prevent the aspiration of liquid. This versatility makes the tracheal catheter of the present invention have a wider applicability in clinical applications, can meet the needs of different surgical scenarios, and further enhances its clinical value.

[0030] The additional aspects and advantages of the present invention will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. The drawings are only examples and are not drawn strictly to scale. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0032] Figure 1 is the overall view from the upper side perspective of the present invention;

[0033] Figure 2 is the front view of the present invention;

[0034] Figure 3 is the overall view from the lower side perspective of the present invention;

[0035] Figure 4 is the cross-sectional view of a partial structure of the present invention;

[0036] Figure 5 is the cross-sectional view of the partition cuff module of the present invention;

[0037] Figure 6 is Figure 5 the front view of;

[0038] Figure 7 is the exploded cross-sectional view of the partition cuff module of the present invention;

[0039] Figure 8 is the cross-sectional view of the diaphragm layer part of the present invention;

[0040] Reference numerals:

[0041] 1. Tracheal catheter module; 11. Tracheal catheter body; 12. Connector; 13. Airbag; 14. First inflation tube;

[0042] 2. Partition cuff module; 21. Cuff; 22. Diaphragm layer; 23. Second inflation tube; 24. Suction tube; 25. Flow hole; 26. Suction cavity; 27. Support stud. Detailed implementation manners

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0044] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0045] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0047] As Figures 1 - 8 shown, a tracheal catheter for preventing flushing fluid from entering the esophagus includes: a tracheal catheter module 1 and a partition cuff module 2.

[0048] As Figures 1 - 3 shown, the tracheal catheter module 1 includes a tracheal catheter body 11, a connector 12, an airbag 13 and a first inflation tube 14. The tracheal catheter body 11 is generally made of medical-grade polyvinyl chloride, has good biocompatibility and flexibility, and can ensure that the irritation to the mucosa is minimized when inserted into the patient's airway, reducing the discomfort of the patient. One end of the tracheal catheter body 11 is a connection end, and the other end is an insertion end. The connector 12 is provided at the connection end, and the connector 12 is used to connect to a breathing device, such as a ventilator or other breathing assistance device, to maintain the normal breathing function of the patient during the operation.

[0049] The airbag 13 is integrally provided on the tracheal catheter body 11 and adjacent to the insertion end. A first inflatable tube 14 is provided on the tracheal catheter body 11. The first inflatable tube 14 communicates with the airbag 13, and the first inflatable tube 14 can be connected to an inflating device to inflate the airbag 13. This is the conventional structure of the existing tracheal catheter. Since it is the same as the prior art and is well-known to those skilled in the art, it will not be described in detail herein.

[0050] As Figures 4 - 6 shown, the partition cuff module 2 includes a cuff 21, a diaphragm layer 22, a second inflatable tube 23, and a suction tube 24. The cuff 21 is provided on the tracheal catheter body 11. The cuff 21 is located above the airbag 13 and adjacent to the airbag 13. A diaphragm layer 22 is provided on the upper side of the cuff 21. The lower side of the diaphragm layer 22 is spaced apart from the upper side of the cuff 21 to form a hollow suction cavity 26. A plurality of flow holes 25 communicating with the suction cavity 26 are provided on the diaphragm layer 22. A second inflatable tube 23 and a suction tube 24 are provided on the tracheal catheter body 11. The second inflatable tube 23 communicates with the cuff 21, and the suction tube 24 communicates with the suction cavity 26.

[0051] When the cuff 21 is inflated and expanded, the internal air pressure of the cuff 21 is low. The middle of the cuff 21 is recessed downward, and the periphery is upturned and closely adheres to the mucosa of the patient's pharynx. Since the cuff 21 will closely adhere to the mucosa of the patient's pharynx after inflation, an effective barrier can be formed to prevent the flushing fluid accumulated at the oral cavity from flowing into the esophagus and stomach. And the internal air pressure of the cuff 21 is low, so the squeezing pressure on the pharyngeal tissue is small. The middle of the cuff 21 is recessed downward and the periphery is upturned. The cuff 21 with this structure has a relatively high capacity and can receive more flushing fluid.

[0052] Therefore, the overall design of the cuff 21 is a low-pressure and high-capacity one. This design can ensure that while the cuff 21 provides a good sealing effect, it will not cause excessive pressure on the surrounding tissues, avoiding the occurrence of complications such as tissue ischemia and injury.

[0053] A perforated diaphragm layer 22 is provided on the upper side of the cuff 21. A sandwich space is formed between the diaphragm layer 22 and the cuff 21 to serve as the suction cavity 26. The flushing fluid in the patient's oral cavity will flow into the suction cavity 26 through the flow holes 25 of the diaphragm layer 22. When the suction tube 24 is connected to a suction device, the flushing fluid in the suction cavity 26 can be sucked away, thus ensuring that the liquid in the oral cavity will not flow into the esophagus and stomach.

[0054] Compared with the way in the prior art that medical staff use the suction tube 24 to directly contact the oral mucosa to suck away the flushing fluid, the suction tube 24 in this solution does not directly contact the oral mucosa, avoiding the risk that the traditional suction tube 24 directly contacting the mucosa easily causes mucosal damage.

[0055] The working process of this device is as follows:

[0056] During oral / nasal / neurosurgical skull base surgery, when a large amount of irrigation is required from the oral cavity / nasopharynx, the surgeon informs the anesthesiologist, who uses an inflation device to inflate the partition cuff 21 so that it closely adheres to the mucosal surface of the patient's pharynx, thereby blocking the connection between the oral cavity and the esophagus.

[0057] At this time, the irrigation fluid in the oral cavity will flow into the suction cavity 26 through the flow holes 25 of the diaphragm layer 22, and then the irrigation fluid (such as povidone iodine) in the oral cavity can be directly sucked away by means of an external suction device through the suction tube 24, preventing the irrigation fluid from flowing into the esophagus and stomach. After the operation, the anesthesiologist releases the gas in the cuff 21, returns the cuff 21 to the uninflated state, and then removes the tracheal catheter from the patient's airway in the conventional manner, completing the airway management task during the entire operation process.

[0058] In a specific application, the tracheal catheter body 11 is provided with scales, and the lower end of the cuff 21 is located at the 13-15 cm scale of the tracheal catheter body 11, that is, the cuff 21 is located at the root of the tongue position of the tracheal catheter body 11.

[0059] In some embodiments, after the cuff 21 is inflated, the internal air pressure is 20-25 cm of water column, and this pressure can ensure that the cuff 21 closely adheres to the mucosal surface of the patient's pharynx, and at the same time will not excessively compress the pharyngeal tissue.

[0060] In some embodiments, the upper and lower sides of the diaphragm layer 22 and the upper side of the cuff 21 are coated with a hydrophobic coating to reduce liquid residue.

[0061] In some embodiments, the cuff 21 and the diaphragm layer 22 are made of medical-grade polyvinyl chloride or silicone material, which causes little irritation to the mucosal surfaces of the patient's oral cavity and pharynx, reduces postoperative discomfort, and at the same time this material has good biocompatibility, reducing the risk of infection.

[0062] In some embodiments, the distribution density of the flow holes 25 in the middle region of the diaphragm layer 22 is greater than the distribution density of the flow holes 25 in the edge region of the diaphragm layer 22, and the aperture of the flow holes 25 in the middle region of the diaphragm layer 22 is larger than the aperture of the flow holes 25 in the edge region of the diaphragm layer 22. Since there are more and larger flow holes 25 in the middle region, the irrigation fluid can quickly flow into the suction cavity 26 and is not easy to accumulate and remain. There are fewer and smaller flow holes 25 at the edge position, so when the suction tube 24 generates negative pressure to suck away the irrigation fluid in the suction cavity 26, the mucosal tissue at the edge can be prevented from being sucked into the holes.

[0063] In a specific setting, the aperture of the flow holes 25 in the middle region of the diaphragm layer 22 is 0.5-1.0 mm, and the aperture of the flow holes 25 in the edge region of the diaphragm layer 22 is 0.2-0.5 mm.

[0064] In some embodiments, such as Figures 5 - 7 As shown, a plurality of support studs 27 are provided in the suction cavity 26. The lower ends of the support studs 27 are connected to the cuff 21, and the upper ends are connected to the diaphragm layer 22. The provided support studs 27 are used to support the diaphragm layer 22, ensuring that the diaphragm layer 22 and the cuff 21 are always spaced apart, allowing the flushing liquid to flow normally into the suction cavity 26 and ensuring unobstructed drainage.

[0065] Among them, the support studs 27 and the cuff 21 are integrally formed. The inside of the support studs 27 is hollow and communicates with the cuff 21. When the cuff 21 is inflated, the support studs 27 expand accordingly and push up the diaphragm layer 22.

[0066] In summary, the main features of this device are as follows:

[0067] 1. Effectively prevent intraoperative flushing liquid from entering the esophagus and causing the risk of aspiration: By setting a low-pressure high-volume cuff 21 at the root of the tongue of the tracheal catheter, the present invention can effectively block the connection between the oral cavity and the esophagus during the operation, preventing the flushing liquid from flowing into the esophagus and the stomach. This design significantly reduces the risk of postoperative complications such as nausea and vomiting caused by the patient aspirating the flushing liquid, improving the safety and success rate of the operation. Compared with traditional tracheal catheters, the present invention has obvious advantages in preventing the aspiration of flushing liquid, providing a more reliable airway management guarantee for oral / nasal / and neurosurgical skull base surgeries.

[0068] 2. Simple operation: The tracheal catheter of the present invention pays attention to the convenience of operation in design. The inflation and deflation operations of the cuff 21 are simple and fast. Doctors can adjust it at any time according to needs during the operation without additional complex equipment or cumbersome operation steps. In addition, by covering a perforated diaphragm layer 22 on the surface of the partition cuff 21 and setting a suction tube 24, the flushing liquid (such as povidone iodine) in the oral cavity can be directly sucked off, further simplifying the operation process and improving the operation efficiency.

[0069] 3. Simple structure: The tracheal catheter of the present invention fully considers cost control in design. The overall structural form is simple. While adding special functions, the manufacturing cost is not significantly increased. By simplifying the design, unnecessary complex devices (such as the cuff 21 pressure measuring device) are avoided, making the present invention have a high cost performance. This not only facilitates the wide promotion and application in clinical medicine, but also reduces the incidence of postoperative complications in patients, reducing the additional medical expenses and treatment time caused by complications, and further improving the utilization efficiency of medical resources.

[0070] 4. Wide range of applications: The tracheal catheter of the present invention is applicable not only to oral and nasal cavity and neurosurgical skull base surgeries, but also can be used in other surgeries that require prevention of liquid aspiration. This versatility makes the tracheal catheter of the present invention have a wider applicability in clinical applications, can meet the needs of different surgical scenarios, and further enhances its clinical value.

[0071] Although some embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that: without departing from the principles and purposes of the present invention, various changes, modifications, substitutions, and variations to these embodiments are all within the protection scope of the claims of the present invention.

Claims

1. An endotracheal tube for preventing flushing fluid from entering the esophagus, characterized in that, Comprising: A tracheal tube module and a partition cuff module; The tracheal tube module includes a tracheal tube body, a connector, an airbag and a first inflation tube. One end of the tracheal tube body is a connection end, and the other end is an insertion end. The connector is provided at the connection end and is used to connect with a breathing device. The airbag is integrally provided on the tracheal tube body and is adjacent to the insertion end. The tracheal tube body is provided with the first inflation tube, and the first inflation tube communicates with the airbag; The partition cuff module includes a cuff, a diaphragm layer, a second inflation tube and a suction tube. The cuff is provided at the root of the tongue position of the tracheal tube body. The cuff is located above the airbag and adjacent to the airbag. The upper side surface of the cuff is provided with the diaphragm layer. The lower side surface of the diaphragm layer is spaced apart from the upper side surface of the cuff to form a hollow suction cavity. The diaphragm layer is provided with a plurality of flow holes communicating with the suction cavity; The tracheal tube body is provided with the second inflation tube and the suction tube. The second inflation tube communicates with the cuff, and the suction tube communicates with the suction cavity; When the cuff is inflated, the internal air pressure of the cuff is low pressure, the middle of the cuff is sunken downward, and the surrounding is upturned and closely adheres to the mucous membrane of the patient's pharynx.

2. The endotracheal tube for preventing flushing fluid from entering the esophagus according to claim 1, wherein The tracheal tube body is provided with scales, and the lower end of the cuff is located at the 13-15 cm scale of the tracheal tube body.

3. The endotracheal tube for preventing flushing fluid from entering the esophagus according to claim 1, characterized in that, After the cuff is inflated, its internal air pressure is 20-25 cm water column.

4. The endotracheal tube for preventing flushing liquid from entering the esophagus according to claim 1, characterized in that, Both the upper and lower side surfaces of the diaphragm layer and the upper side surface of the cuff are coated with a hydrophobic coating.

5. The endotracheal tube for preventing flushing liquid from entering the esophagus according to claim 1, wherein The cuff and the diaphragm layer are made of medical-grade polyvinyl chloride or silicone material.

6. The endotracheal tube for preventing flushing liquid from entering the esophagus according to claim 1, characterized in that, The distribution density of the flow holes in the middle area of the diaphragm layer is greater than that in the edge area of the diaphragm layer, and the aperture of the flow holes in the middle area of the diaphragm layer is greater than that in the edge area of the diaphragm layer.

7. The endotracheal tube for preventing flushing liquid from entering the esophagus according to claim 7, wherein, The aperture of the flow holes in the middle area of the diaphragm layer is 0.5-1.0 mm, and the aperture of the flow holes in the edge area of the diaphragm layer is 0.2-0.5 mm.

8. The tracheal catheter for preventing flushing fluid from entering the esophagus according to claim 1, characterized in that, A plurality of support convex columns are provided in the suction cavity. The lower ends of the support convex columns are connected to the cuff, and the upper ends are connected to the diaphragm layer.

9. The endotracheal tube for preventing flushing liquid from entering the esophagus according to claim 9, characterized in that, The support convex columns are integrally formed with the cuff, and the inside of the support convex columns is hollow and communicates with the cuff.

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