A nasal ventilation cannula with drug coating protection function

Abstract

The present invention discloses a medical device, specifically a nasal ventilation cannula with a drug coating protection function. A contact is provided on one side of the contact trachea, the contact naturally fits the nostril and is coated with a drug that can be absorbed by the skin on the outside, a clamping joint is provided on the other side of the contact trachea, a connecting trachea is provided on the contact trachea, a butt joint is provided at one end of the connecting trachea adjacent to the contact trachea, a mounting head for connecting to a device is provided at one end of the connecting trachea away from the contact trachea, and the contact trachea and the connecting trachea are connected by the clamping joint and the butt joint. The cannula body is made of polyurethane with good biocompatibility and low friction coefficient to reduce friction with the inner wall of the nostril, and the part that contacts the nostril is designed with a micro-convex grid-like buffer structure to disperse the pressure of the cannula on the nostril, and a clear positioning indicator mark is provided at the insertion end to facilitate medical staff to accurately place the cannula.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a nasal ventilation cannula with a drug coating protection function. Background Art

[0002] In clinical medical treatment, patients who are not fully awake during and after anesthesia cannot keep their airways open and need to use a nasopharyngeal airway to keep their airways open. When the patient loses consciousness or the pharyngeal muscles relax due to other reasons, the root of the tongue may block the airway. The nasopharyngeal airway occupies part of the pharyngeal space to prevent this from happening and keep the airway open for ventilation with the outside world.

[0003] Although the existing endotracheal intubation method can effectively ensure the patient's airway is unobstructed and oxygen is supplied during surgery, prolonged intubation may cause friction damage to the inner wall of the nostrils, mucosal inflammation, and even complications such as nasal septum deviation. In addition, local pressure and friction during intubation may also cause nasal pain and discomfort, affecting the patient's postoperative recovery. Although some endotracheal tubes have been designed with special structures or materials to reduce damage, active protection and repair measures for the contact area between the tube and the nostrils are still insufficient. Summary of the invention

[0004] The purpose of the present invention is to provide a nasal ventilation cannula with a drug coating protection function to solve the existing tracheal intubation method. Although it can effectively ensure the patient's airway is unobstructed and oxygen is supplied during surgery, long-term intubation may cause friction damage to the inner wall of the nostrils, mucosal inflammation, and even complications such as nasal septum deviation. In addition, local pressure and friction during the intubation process may also cause nasal pain and discomfort, affecting the patient's postoperative recovery. Although some tracheal cannulas have been designed with special structures or materials to reduce damage, there is still a problem that active protection and repair measures for the contact area between the cannula and the nostrils are still insufficient.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A nasal ventilation cannula with a drug coating protection function is provided, including a contact trachea, a contact is provided on one side of the contact trachea, the contact naturally fits the nostril and is coated with a drug that can be absorbed by the skin on the outside, a clamping joint is provided on the other side of the contact trachea, a connecting trachea is provided on the contact trachea, a butt joint is provided on one end of the connecting trachea close to the contact trachea, a mounting head for connecting to a device is provided on one end of the connecting trachea away from the contact trachea, the contact trachea and the connecting trachea are connected by the clamping joint and the butt joint, an annular buckle is further provided on the end of the contact close to the clamping joint to enhance the stable connection with other components, an arc sleeve is fixed on the contact by the annular buckle, one side of the arc sleeve is a grid-shaped protrusion, a limiting sleeve is provided on the contact trachea, a medicine applicator is provided on the connecting trachea, and the applicator The medicine device includes a connecting buckle, one end of which is arranged on the connecting trachea, and the other end of which is arranged on the injection body. A push rod is arranged in the injection body, and a pull rope is arranged at the end of the push rod. A slot for guiding the pull rope is installed in the middle of the top of the injection body, and the pull rope passes through the slot and is connected with the raised clamping rod on the top right side of the limiting sleeve on the contact trachea. The injection body is filled with medicine that can be absorbed by the skin, and a connecting tube is arranged on one side of the injection body. When the limiting sleeve slides to one side and presses against the skin, it drives the push rod to squeeze the medicine in the injection body, and the push rod pushes the medicine in the injection body along the connecting tube into the cavity between the arc sleeve and the contact. The medicine applicator is connected to the arc sleeve through the connecting tube to facilitate adding or supplementing medicine to the cavity between the contact and the arc sleeve.

[0007] As a preferred solution for a nasal ventilation cannula with drug coating protection function, the contact is made of polyurethane material with good biocompatibility and low friction coefficient, ensuring safety and comfort in use.

[0008] As a preferred solution of a nasal ventilation cannula with a drug coating protection function, a scale is provided on the contact trachea on the side close to the contact, the arc-shaped sleeve is slightly larger than the contact, and a drug that can be absorbed by the skin is contained in the cavity between the arc-shaped sleeve and the contact, and the cavity between the arc-shaped sleeve and the contact is filled with the drug that can be absorbed by the skin to support the arc-shaped sleeve to fit the nasal cavity, and a plurality of air holes are evenly provided on the arc-shaped sleeve to facilitate the drug in the cavity between the arc-shaped sleeve and the contact to flow to the outside of the arc-shaped sleeve and directly contact the skin, and an injection hole for injecting the drug into the cavity is provided on the arc-shaped sleeve, and the limiting sleeve presses against the skin to accurately deliver the contact into the nostril according to the scale on the contact trachea.

[0009] As a preferred solution of a nasal ventilation cannula with drug coating protection function, the connecting trachea has a length far exceeding that of the contact trachea, so as to facilitate the connection of the connecting trachea with the device.

[0010] As a preferred solution of a nasal ventilation cannula with drug coating protection function, the arc sleeve and the limiting sleeve can be easily disassembled for disinfection. After disinfection, the arc sleeve and the limiting sleeve can maintain their original functions and can be reused.

[0011] As a preferred solution for a nasal ventilation cannula with a drug coating protection function, the contact is streamlined and fits naturally with the nostrils, so that when the drug is injected into the cavity between the arc sleeve and the contact, the drug flows evenly on the contact, allowing the drug to more effectively contact the skin through the air holes on the arc sleeve.

[0012] As a preferred solution for a nasal ventilation cannula with a drug coating protection function, one side of the clamping joint is in a pointed cone shape, a pointed cone limiting ring is provided on the other side of the clamping joint, one side of the docking joint is in a concave shape, the clamping joint is inserted into the connecting trachea, and the contact trachea and the connecting trachea are connected by the concave shape on one side of the docking joint and the pointed cone limiting ring is provided on the other side of the clamping joint.

[0013] Beneficial effects of the present invention:

[0014] The surface of the nostril contact section of the cannula is coated with a skin-soluble drug coating. During the intubation process and during the intubation period, the drug coating gradually dissolves and releases effective ingredients, directly acting on the inner wall of the nostril, effectively preventing local infection caused by the intubation, reducing inflammatory response, and promoting rapid repair of damaged mucosa. The cannula is divided into two sections. One section is longer and adjacent to the equipment, which is convenient for adjusting the placement position. It can be disinfected and reused repeatedly without constant replacement. The other section is shorter and closer to the patient and is in direct contact with the patient, making it easy to disassemble and replace, saving usage costs.

[0015] The main body of the cannula is made of polyurethane with good biocompatibility and low friction coefficient to reduce friction with the inner wall of the nostril. At the same time, the part that contacts the nostril is designed with a micro-raised grid-like buffer structure to disperse the pressure of the cannula on the nostrils and further reduce the risk of tissue damage. The insertion end is provided with clear positioning indicators and depth marks to facilitate medical staff to accurately place the cannula and prevent additional damage caused by too deep insertion or improper positioning.

[0016] The front end of the cannula is designed to be streamlined according to the anatomical characteristics of the nasal cavity to ensure a natural fit with the nostrils and avoid scratches on the nasal mucosa caused by sharp edges. A variety of sizes are available to accommodate individual differences in different patients, ensuring that the cannula can be placed firmly without excessively compressing the nasal cavity, so as to meet the needs of different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a nasal ventilation cannula with a drug coating protection function according to an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the contact, the limit sleeve and the scale of the nasal ventilation cannula with a drug coating protection function according to an embodiment of the present invention.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the connecting trachea and the docking joint of the nasal ventilation cannula with drug coating protection function according to one embodiment of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of a medicine applicator for a nasal ventilation cannula with a medicine coating protection function according to an embodiment of the present invention.

[0022] In the figure:

[0023] 1. Contact trachea; 2. Contact; 21. Arc sleeve; 22. Limit sleeve; 23. Scale; 3. Card joint; 41. Connecting trachea; 42. Butt joint; 43. Mounting head; 5. Medicine applicator; 51. Connecting buckle; 52. Injection body; 53. Push rod; 54. Connecting tube. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0025] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is 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. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1-4As shown, in an embodiment of the present invention, a nasal ventilation cannula with a drug coating protection function is provided, including a contact trachea 1, a contact 2 is connected to the front side of the contact trachea 1, the contact 2 is streamlined to ensure natural fit with the inner wall of the nostril, and a layer of skin-soluble drug coating is evenly coated on the outer side of the contact 2, a clamping joint 3 is connected to the rear end of the contact trachea 1, the clamping joint 3 is tapered away from the side of the contact 2, a tapered limiting ring and a limiting protrusion are arranged on the left side of the clamping joint 3 on the contact trachea 1, and the contact trachea 1, the contact 2 and the clamping joint 3 are integrated. Injection molding, the rear side of the contact air pipe 1 is connected to a connecting air pipe 41 through a clamping joint 3, a docking joint 42 is provided on the connecting air pipe 41 on the side close to the contact air pipe 1, one side of the docking joint 42 is concave, and a mounting head 43 for docking with the equipment is connected to the other side of the connecting air pipe 41. The connecting air pipe 41, the docking joint 42 and the mounting head 43 are integrally injection molded, and the clamping joint 3 is inserted into the connecting air pipe 41 and clamped together through the concave docking joint 42 and the pointed conical limiting ring provided on the clamping joint 3, and the limiting protrusion on the contact air pipe 1 further limits the clamping joint 3 The position of the contact trachea 1 prevents the inserted contact trachea 1 from loosening. When the contact trachea 1 and the connecting trachea 41 are connected for ventilation, the pointed conical limiting ring inserted into the connecting trachea 41 is pushed by gas unidirectionally to contact and close with the inner protrusion of the docking joint 42, so that the contact trachea 1 and the connecting trachea 41 are connected more tightly, and there is no need to wrap the medical tape multiple times to fix the connection. A layer of skin-soluble drug coating is evenly applied on the contact 2, and the cannula is fixed in the nostril while contacting the inner wall of the nostril. During the intubation process and during the intubation period, the drug coating gradually dissolves and releases the effective ingredients, which directly act on the nostrils. The wall can effectively prevent local infection caused by intubation, reduce inflammatory response, promote the rapid repair of damaged mucosa, avoid direct contact between the intubation and the skin, so that the patient's airway is unobstructed and oxygen supply is timely during the operation, and long-term contact with the skin will not cause friction damage to the inner wall of the nostrils, mucosal inflammation, or even complications such as nasal septum deviation, which will affect the patient's postoperative recovery. The intubation tube is divided into two sections: the contact trachea 1 and the connecting trachea 41. The connecting trachea 41 is longer and convenient for docking with the equipment. It can be disinfected and reused without constant replacement. The contact trachea 1 is shorter and in direct contact with the patient, which is convenient for disassembly and replacement to save the use cost.

[0029] In a further solution, the contact 2 is made of a polyurethane material with good biocompatibility and low friction coefficient. An annular buckle is also provided at one end of the contact 2 near the clamping joint 3. An arc sleeve 21 is provided on the contact 2 through the annular buckle sleeve. The outer side of the arc sleeve 21 is grid-shaped and has a plurality of air holes to disperse the pressure of the cannula on the nostrils to avoid tissue damage. A limiting sleeve 22 is provided on the sliding sleeve of the contact trachea 1. Both the arc sleeve 21 and the limiting sleeve 22 are easy to disassemble and can be repeatedly used after disinfection. A carved The arc sleeve 21 is slightly larger than the contact 2, and the cavity between the arc sleeve 21 and the contact 2 is filled with drugs that can be dissolved in the skin to prevent the drug coating from gradually dissolving and releasing the active ingredients. The insufficient drug causes the cannula to fall off and affects the operation. An injection hole for injecting drugs into the cavity is opened at the top of the right side of the arc sleeve 21. The limiting sleeve 22 is against the skin at the nose. According to the indication of the scale 23 on the contact trachea 1, the contact 2 is slowly pushed into the nostril, which is convenient for medical staff to accurately place the cannula and prevent additional damage caused by inserting too deep or improper position.

[0030] In a further solution, a medicine applicator 5 is clamped on the side of the connecting trachea 41 that is close to the contact trachea 1. The medicine applicator 5 includes a connecting buckle 51. One end of the connecting buckle 51 is clamped on the left side of the connecting trachea 41, and the other end of the connecting buckle 51 is connected to the injection body 52. ​​The connecting buckle 51 is located in the middle of the outer side of the injection body 52. ​​A push rod 53 is slidably arranged on the right side of the injection body 52. ​​A connecting tube 54 is installed on the left side of the injection body 52. ​​A skin-soluble drug is stored in the injection body 52. ​​A pull rope is arranged at the end of the push rod 53. A card slot for guiding the pull rope is installed in the middle of the top of the injection body 52. ​​The pull rope passes through the card slot and is connected to the raised card rod on the top right side of the limiting sleeve 22 on the contact trachea 1. The limiting sleeve 2 When the push rod 53 is pushed toward one side of the nostril and pressed against the skin outside the nostril, the pull rope is pushed toward one side of the nostril, and then the push rod 53 is pushed toward one side of the nostril to push the medicine in the injection body 52 into the cavity between the arc sleeve 21 and the contact 2 through the connecting tube 54, filling the cavity between the arc sleeve 21 and the contact 2 so that the outer side of the arc sleeve 21 is more closely attached to the inner wall of the nostril. The medicine is transferred to the outer side of the arc sleeve 21 through the air holes on the arc sleeve 21 and directly contacts the skin, preventing the cannula from falling off after the drug coating is gradually dissolved and the effective ingredients are released. During the operation, the push rod 53 can also be manually pushed to further inject the medicine, avoiding the inconsistency of drug absorption due to different physiques of different people, and insufficient medicine on the outer side of the arc sleeve 21, which causes the cannula to fall off and affect the operation.

[0031] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A nasal ventilation cannula with drug coating protection function, characterized in that: The invention comprises a contact air tube (1), wherein a contact head (2) is arranged on one side of the contact air tube (1), wherein the contact head (2) fits naturally with the nostrils and is coated with a drug that can be absorbed by the skin on the outer side, wherein a clamping joint (3) is arranged on the other side of the contact air tube (1), wherein a connecting air tube (41) is arranged on the contact air tube (1), wherein a butt joint (42) is arranged at one end of the connecting air tube (41) adjacent to the contact air tube (1), wherein a mounting head (43) for connecting to a device is arranged at one end of the connecting air tube (41) away from the contact air tube (1), wherein the contact air tube (1) is provided with a mounting head (43) for connecting to a device, wherein the contact air tube (1) is provided with a mounting head (43) for connecting to a device. The connecting air pipe (41) is connected to the connecting joint (42) by means of the clamping joint (3). An annular buckle is provided at one end of the contact (2) close to the clamping joint (3) to enhance the stable connection with other components. An arc sleeve (21) is fixed to the contact (2) by means of the annular buckle. One side of the arc sleeve (21) is convex in a grid shape. A limiting sleeve (22) is provided on the contact air pipe (1). A medicine applicator (5) is provided on the connecting air pipe (41). The medicine applicator (5) includes a connecting buckle (51). One end of the connecting buckle (51) is arranged on the connecting air tube (41), and the other end of the connecting buckle (51) is arranged on the injection body (52). A push rod (53) is arranged inside the injection body (52), and a pull rope is arranged at the end of the push rod (53). A slot for guiding the pull rope is installed in the middle of the top of the injection body (52). The pull rope passes through the slot and is connected to the protruding card rod on the top right side of the limiting sleeve (22) on the contact air tube (1). The injection body (52) contains a drug that can be absorbed by the skin. The injection body (52) A connecting tube (54) is provided on one side of the body (52); when the limiting sleeve (22) slides to one side and abuts against the skin, it drives the push rod (53) to squeeze the medicine in the injection body (52); the push rod (53) pushes the medicine in the injection body (52) along the connecting tube (54) and is injected into the cavity between the arc sleeve (21) and the contact (2); the medicine applicator (5) is connected to the arc sleeve (21) through the connecting tube (54) so ​​as to add or supplement the medicine into the cavity between the contact (2) and the arc sleeve (21).

2. The nasal ventilation cannula with drug coating protection function according to claim 1, characterized in that: The contact (2) is made of polyurethane material with good biocompatibility and low friction coefficient, ensuring safety and comfort in use.

3. The nasal ventilation cannula with drug coating protection function according to claim 2, characterized in that: The contact trachea (1) is provided with a scale (23) on one side close to the contact (2); the arc sleeve (21) is slightly larger than the contact (2); a drug that can be absorbed by the skin is contained in the cavity between the arc sleeve (21) and the contact (2); the cavity between the arc sleeve (21) and the contact (2) is filled with the drug that can be absorbed by the skin to support the arc sleeve (21) to fit the nasal cavity; a plurality of air holes are evenly provided on the arc sleeve (21) to facilitate the drug in the cavity between the arc sleeve (21) and the contact (2) to flow to the outside of the arc sleeve (21) to directly contact the skin; an injection hole for injecting the drug into the cavity is provided on the arc sleeve (21); the limiting sleeve (22) is pressed against the skin to accurately deliver the contact (2) into the nostril according to the scale (23) on the contact trachea (1).

4. The nasal ventilation cannula with drug coating protection function according to claim 3, characterized in that: The connecting air pipe (41) has a length far exceeding that of the contact air pipe (1), so as to facilitate the connection of the connecting air pipe (41) with equipment.

5. The nasal ventilation cannula with drug coating protection function according to claim 3, characterized in that: The arc-shaped sleeve (21) and the limiting sleeve (22) can be easily disassembled for disinfection. After disinfection, the arc-shaped sleeve (21) and the limiting sleeve (22) can maintain their original functions and can be reused.

6. The nasal ventilation cannula with drug coating protection function according to claim 3, characterized in that: The contact (2) is streamlined and fits naturally with the nostril, so that when the drug is injected into the cavity between the arc-shaped sleeve (21) and the contact (2), the drug flows evenly on the contact (2), so that the drug can more effectively contact the skin through the air holes on the arc-shaped sleeve (21).

7. The nasal ventilation cannula with drug coating protection function according to claim 1, characterized in that: One side of the clamping joint (3) is in a pointed cone shape, the other side of the clamping joint (3) is provided with a pointed cone-shaped limiting ring, and one side of the docking joint (42) is in a concave shape. The clamping joint (3) is inserted into the connecting air pipe (41), and the contact air pipe (1) and the connecting air pipe (41) are connected by the concave shape of one side of the docking joint (42) and the pointed cone-shaped limiting ring provided on the other side of the clamping joint (3).

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