Tracheal tube preventing washout fluid from entering the esophagus

Abstract

The application discloses a tracheal catheter capable of preventing flushing liquid from entering an esophagus, and is suitable for oral cavity and nasal cavity and neurosurgical skull base operations, and comprises a tracheal catheter module and a blocking cuff module; the tracheal catheter module comprises a tracheal catheter body, a joint, an air bag and a first inflation pipe, the tracheal catheter body is provided with the joint, the air bag and the first inflation pipe; the blocking cuff module comprises a cuff, a diaphragm layer, a second inflation pipe and a suction pipe, the cuff is arranged at a tongue root position of the tracheal catheter body, an upper side of the cuff is provided with a diaphragm layer hole with a flow hole, the tracheal catheter body is provided with the second inflation pipe and the suction pipe; when the cuff is inflated and expanded, the internal air pressure of the cuff is low, the middle of the cuff is concave downward, the periphery of the cuff is raised and closely adheres to the mucosa of a throat part of a patient. The scheme effectively blocks the connection between the oral cavity and the esophagus, prevents the flushing liquid from entering the esophagus and the stomach, and is a tracheal catheter capable of preventing flushing liquid from entering the esophagus, and is suitable for oral cavity and nasal cavity and neurosurgical skull base operations, and comprises a tracheal catheter module and a blocking cuff module; the tracheal catheter module comprises a tracheal catheter body, a joint, an air bag and a first inflation pipe, the tracheal catheter body is provided with the joint, the air bag and the first inflation pipe; the blocking cuff module comprises a cuff, a diaphragm layer, a second inflation pipe and a suction pipe, the cuff is arranged at a tongue root position of the tracheal catheter body, an upper side of the cuff is provided with a diaphragm layer hole with a flow hole, the tracheal catheter body is provided with the second inflation pipe and the suction pipe; when the cuff is inflated and expanded, the internal air pressure of the cuff is low, the middle of the cuff is concave downward, the periphery of the cuff is raised and closely adheres to the mucosa of a throat part of a patient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tracheal tubes, in particular to a tracheal tube for preventing irrigation fluid from entering the esophagus. BACKGROUND

[0002] In transnasal surgery and oral and neurosurgical skull base surgery, a large amount of irrigation fluid (such as normal saline, iodophor, etc.) is often used to flush the surgical area during the operation to remove blood, tissue fragments, etc., and to keep the surgical field clear. However, since the patient is usually in a supine position, the irrigation fluid is easy 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 the tracheal tube commonly used in clinical practice is to maintain airway patency, but its design can only close the airway and cannot effectively block the connection between the oral cavity and the esophagus. In order to prevent irrigation fluid from being aspirated during the operation, doctors usually take the following auxiliary measures:

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

[0005] 2. Gauze packing: packing gauze in the pharynx to block the liquid, but the operation is complicated, may affect the surgical field, and there is a risk of gauze being left behind.

[0006] In the prior art, some improved tracheal tubes attempt to improve this problem by adding a cuff or a drainage structure, but still have the following shortcomings:

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

[0008] 2. Low suction efficiency: some tubes have a suction channel, but lack an optimized liquid drainage structure, which is easy to block or retain liquid.

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

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

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

[0012] The technical scheme of the present application is as follows: a tracheal catheter capable of preventing flushing liquid from entering an esophagus, comprising a tracheal catheter module and a separation cuff module;

[0013] The tracheal catheter module comprises a tracheal catheter body, a joint, an air bag and a first inflation tube, one end of the tracheal catheter body is a connecting end, the other end is an insertion end, the joint is arranged at the connecting end, the joint is used for being connected with a breathing device, the air bag is integrally arranged on the tracheal catheter body and adjacent to the insertion end, the first inflation tube is arranged on the tracheal catheter body and communicates with the air bag;

[0014] The separation cuff module comprises a cuff, a diaphragm layer, a second inflation tube and a suction tube, the cuff is arranged at a tongue root position of the tracheal catheter body, the cuff is located above the air bag and adjacent to the air bag, 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, and a plurality of flow holes communicating with the suction cavity are arranged on the diaphragm layer;

[0015] The second inflation tube and the suction tube are arranged on the tracheal catheter body, the second inflation tube communicates with the cuff, and the suction tube communicates with the suction cavity;

[0016] When the cuff is inflated and expanded, the internal air pressure of the cuff is low pressure, the middle of the cuff is concave downward, the periphery of the cuff is raised and tightly adheres to the mucosa of the throat of a patient.

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

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

[0019] Further, the upper and lower sides of the diaphragm layer and the upper side of the cuff are 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 region of the diaphragm layer is greater than the distribution density of the flow holes in the edge region of the diaphragm layer, and the pore size of the flow holes in the middle region of the diaphragm layer is greater than the pore size of the flow holes in the edge region of the diaphragm layer.

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

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

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

[0025] Compared with the prior art, the present application has the following advantages:

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

[0027] 2. Simple operation: The tracheal tube of the present application focuses on the convenience of operation in design. The inflation and deflation of the cuff is simple and fast, and the doctor can adjust it at any time during the operation according to the needs, without the need for additional complex equipment or cumbersome operation steps. In addition, by covering a layer of porous diaphragm layer on the surface of the blocking cuff and arranging a suction pipe, the flushing liquid (such as iodophor) in the oral cavity can be directly sucked away, further simplifying the operation process and improving the operation efficiency.

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

[0029] 4. Wide range of applications: The tracheal tube of the present application is not only suitable for oral and nasal and neurosurgical skull base surgery, but also can be used in other operations that need to prevent liquid aspiration. This multifunctionality makes the tracheal tube of the present application have wider applicability in clinical application, which can meet the needs of different operation scenes, further improving its clinical value.

[0030] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and the drawings are only examples and are not drawn strictly according to scale. For those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0032] Figure 1 is the overall view of the upper side view of the present application;

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

[0034] Figure 3 is the overall view of the lower side view of the present application;

[0035] Figure 4 is the sectional view of the partial structure of the present application;

[0036] Figure 5 is the sectional view of the partition sleeve capsule module of the present application;

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

[0038] Figure 7 is the sectional exploded view of the partition sleeve capsule module of the present application;

[0039] Figure 8 is the sectional view of the diaphragm layer part of the present application;

[0040] Reference signs:

[0041] 1, tracheal tube module; 11, tracheal tube body; 12, joint; 13, air bag; 14, first inflation tube;

[0042] 2, partition sleeve capsule module; 21, sleeve capsule; 22, diaphragm layer; 23, second inflation tube; 24, suction tube; 25, flow hole; 26, suction cavity; 27, support column. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0044] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which examples of embodiments are shown, and like or similar elements or elements having like or similar functions are denoted throughout by like reference numerals. In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer", "vertical", "circumferential" and the like 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 application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the description of the present application, "first feature" and "second feature" can include one or more of the features. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features.

[0047] As shown in Figures 1-8 A tracheal catheter for preventing the entry of washout fluid into the esophagus, comprising: a tracheal catheter module 1 and a blocking cuff module 2.

[0048] As shown in Figures 1-3 The tracheal catheter module 1 comprises a tracheal catheter body 11, a connector 12, a cuff 13 and a first inflation tube 14. The tracheal catheter body 11 is generally made of medical grade polyvinyl chloride, which has good biocompatibility and flexibility, and can ensure minimal irritation to the mucosa when inserted into the patient's airway, reducing patient discomfort. 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 with a breathing device, such as a breathing machine or other breathing assistance device, to maintain the normal breathing function of the patient during the operation.

[0049] The air bag 13 is integrally arranged on the tracheal catheter body 11 and adjacent to the insertion end, the tracheal catheter body 11 is provided with a first inflation tube 14, the first inflation tube 14 is in communication with the air bag 13, and the first inflation tube 14 can be connected with an inflation device to inflate the air bag 13. This is the conventional structure of the existing tracheal catheter, and since it is the same as the prior art, it is well known to those skilled in the art, and therefore will not be described again.

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

[0051] When the sleeve 21 is inflated and expanded, the internal pressure of the sleeve 21 is low, the middle of the sleeve 21 is concave downward, the periphery is raised and tightly adheres to the mucosa of the throat of the patient. Since the sleeve 21 after inflation will tightly adhere to the mucosa of the throat of the patient, an effective barrier will be formed to prevent the accumulated irrigation fluid in the oral cavity from flowing into the esophagus and stomach. Moreover, the internal pressure of the sleeve 21 is low, so the extrusion pressure on the throat tissue is small, the middle of the sleeve 21 is concave downward, and the periphery is raised. The sleeve 21 under this structure has a high capacity and can receive more irrigation fluid.

[0052] Therefore, the sleeve 21 as a whole is a low-pressure high-capacity design. This design can ensure that the sleeve 21 provides a good sealing effect while not causing excessive pressure on the surrounding tissue, avoiding complications such as tissue ischemia and injury.

[0053] The upper side of the sleeve 21 is provided with a diaphragm layer 22 with holes, and a sandwiched space is formed between the diaphragm layer 22 and the sleeve 21 as a suction chamber 26. The irrigation fluid in the oral cavity of the patient will flow into the suction chamber 26 through the flow holes 25 of the diaphragm layer 22. When the suction tube 24 is connected to the suction device, the irrigation fluid in the suction chamber 26 can be sucked away, thereby ensuring that the liquid in the oral cavity will not flow into the esophagus and stomach.

[0054] Compared with the method of directly contacting the oral mucosa with the suction tube 24 to suck away the irrigation fluid in the prior art, the suction tube 24 in the present scheme will not directly contact the oral mucosa, avoiding the risk of damage to the mucosa caused by the direct contact of the traditional suction tube 24 with the mucosa.

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

[0056] In oral / nasal / cranial base surgery, when a large amount of irrigation is needed from the oral cavity / nasopharynx, the surgeon informs the anesthesiologist, who inflates the isolation cuff 21 with the inflation device to make it closely adhere to the mucosa of the throat of the patient, 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 overflow hole 25 of the diaphragm layer 22, and then the irrigation fluid (such as iodophor) in the oral cavity can be directly sucked away by the external suction device through the suction tube 24, preventing the irrigation fluid from flowing into the esophagus and stomach. After the operation is completed, the anesthesiologist releases the gas in the cuff 21 to restore the cuff 21 to the un-inflated state, and then the tracheal tube is pulled out of the airway of the patient according to the conventional method, completing the airway management task during the entire operation.

[0058] In specific applications, the tracheal tube body 11 is provided with a scale, and the lower end of the cuff 21 is located at the 13-15 cm scale of the tracheal tube body 11, that is, the cuff 21 is located at the base of the tongue of the tracheal tube body 11.

[0059] In some embodiments, after the cuff 21 is inflated, the internal gas pressure is 20-25 cm of water column, which can ensure that the cuff 21 closely adheres to the mucosa of the throat of the patient, while not excessively pressing the throat 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, which can 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 has little irritation to the mucosa of the oral cavity and throat of the patient, reduces postoperative discomfort, and has good biocompatibility, reducing the risk of infection.

[0062] In some embodiments, the distribution density of the overflow holes 25 in the middle region of the diaphragm layer 22 is greater than that of the overflow holes 25 in the edge region of the diaphragm layer 22, and the pore size of the overflow holes 25 in the middle region of the diaphragm layer 22 is greater than that of the overflow holes 25 in the edge region of the diaphragm layer 22. Because there are more overflow holes 25 in the middle region and the pore size is larger, the irrigation fluid can quickly flow into the suction cavity 26 and is not easy to accumulate and remain. The overflow holes 25 in the edge region are less and have a small pore size, so that when the negative pressure is generated in the suction tube 24 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 hole.

[0063] In specific settings, the pore size of the overflow holes 25 in the middle region of the diaphragm layer 22 is 0.5-1.0 mm, and the pore size of the overflow holes 25 in the edge region of the diaphragm layer 22 is 0.2-0.5 mm.

[0064] In some embodiments, as shown in Figures 5-7 As shown in the drawings, a plurality of support columns 27 are arranged in the suction cavity 26, the lower end of the support column 27 is connected with the cuff 21, and the upper end is connected with the diaphragm layer 22. The support column 27 is arranged to support the diaphragm layer 22, ensure that the diaphragm layer 22 is always spaced apart from the cuff 21, and enable the flushing liquid to flow into the suction cavity 26 normally, and ensure smooth drainage.

[0065] Among them, the support column 27 is integrally formed with the cuff 21, the support column 27 is hollow inside and communicates with the cuff 21, when the cuff 21 inflates and expands, the support column 27 expands and lifts the diaphragm layer 22.

[0066] In summary, the device mainly has the following characteristics:

[0067] 1. Effectively prevent the risk of aspiration caused by the flushing liquid entering the esophagus during the operation: By arranging the low-pressure high-capacity cuff 21 at the base of the tongue of the tracheal tube, the connection between the oral cavity and the esophagus can be effectively blocked during the operation, preventing the flushing liquid from flowing into the esophagus and stomach. This design significantly reduces the risk of postoperative complications such as nausea and vomiting caused by aspiration of flushing liquid, and improves the safety and success rate of the operation. Compared with traditional tracheal tubes, the invention has obvious advantages in preventing aspiration of flushing liquid, providing more reliable airway management protection for oral / nasal / neurosurgery skull base surgery.

[0068] 2. Easy to operate: The tracheal tube of the invention focuses on the convenience of operation in design, the inflation and deflation of the cuff 21 is simple and fast, and the doctor can adjust it at any time during the operation according to the needs, without the need for additional complex equipment or cumbersome operation steps. In addition, by covering the surface of the blocking cuff 21 with a layer of porous diaphragm layer 22 and arranging the suction pipe 24, the flushing liquid (such as iodophor) in the oral cavity can be directly sucked away, further simplifying the operation process and improving the operation efficiency.

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

[0070] 4. Wide application range: The tracheal tube of the application is not only suitable for oral cavity and nasal cavity and neurosurgical skull base surgery, but also can be used in other surgeries that need to prevent liquid aspiration. This multifunctionality makes the tracheal tube of the application have wider applicability in clinical application, can meet the needs of different surgical scenes, and further improves its clinical value.

[0071] Although some embodiments of the present application have been shown and described, it would be appreciated by those skilled in the art that changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and all these changes, modifications, substitutions and variations are within the protection scope of the claims of the present application.

Claims

1. A lavage fluid anti- refluxing endotracheal tube, characterized by, The application relates to a tracheal tube module and a separation cuff module. The tracheal tube module comprises a tracheal tube body, a joint, an air bag and a first inflation tube, one end of the tracheal tube body is a connecting end, the other end is an insertion end, the joint is arranged at the connecting end and is used for being connected with a breathing device, the air bag is integrally arranged on the tracheal tube body and is adjacent to the insertion end, and the first inflation tube is arranged on the tracheal tube body and is communicated with the air bag. The separation cuff module comprises a cuff, a diaphragm layer, a second inflation tube and a suction tube, the cuff is arranged at a lingual root position of the tracheal tube body, the cuff is arranged above the air bag and is adjacent to the air bag, the upper side of the cuff is provided with the diaphragm layer, the lower side of the diaphragm layer is spaced from the upper side of the cuff to form a hollow suction cavity, and a plurality of flow holes are arranged on the diaphragm layer and are communicated with the suction cavity; the flow hole distribution density of a middle region of the diaphragm layer is greater than that of an edge region of the diaphragm layer, and the flow hole diameter of the middle region of the diaphragm layer is greater than that of the edge region of the diaphragm layer. The second inflation tube and the suction tube are arranged on the tracheal tube body, the second inflation tube is communicated with the cuff, and the suction tube is communicated with the suction cavity. When the cuff is inflated and expanded, the internal air pressure of the cuff is low, the middle of the cuff is concave downward, the periphery of the cuff is raised and tightly adheres to the mucosa of the throat of a patient. A scale is arranged on the tracheal tube body, and the lower end of the cuff is located at the 13-15cm scale of the tracheal tube body.

2. The flushable, anti-aspirating endotracheal tube of claim 1, wherein, The projection shape of the inflated cuff is circular, and the radius is 2-3cm.

3. The flushable, anti-aspiration tracheal tube of claim 1, wherein, The internal air pressure of the inflated cuff is 20-25cm of water column.

4. The flushable, anti-aspiration tracheal tube of claim 1, wherein, The upper and lower sides of the diaphragm layer and the upper side of the cuff are coated with a hydrophobic coating.

5. The flushable, anti-aspiration tracheal tube of claim 1, wherein, The cuff and the diaphragm layer are made of medical-grade polyvinyl chloride or silicone material.

6. The flushable, anti-aspiration tracheal tube of claim 1, wherein, The flow hole diameter of the middle region of the diaphragm layer is 0.5-1.0mm, and the flow hole diameter of the edge region of the diaphragm layer is 0.2-0.5mm.

7. The flushable, anti-aspiration tracheal tube of claim 1, wherein, A plurality of supporting convex columns are arranged in the suction cavity, the lower end of the supporting convex column is connected with the cuff, and the upper end of the supporting convex column is connected with the diaphragm layer.

8. The flushable, anti-aspiration tracheal tube of claim 1, wherein, The supporting convex column is integrally formed with the cuff, and the supporting convex column is hollow and communicated with the cuff.

9. The flushable, anti-aspiration tracheal tube of claim 8, wherein, ​

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