Intratracheal catheter guide device

Abstract

The utility model discloses an endotracheal catheter guiding device, which comprises a shaft for guiding an endotracheal catheter and a handle fixed with the shaft, the shaft comprises a near end, a far end, a bending part adjacent to the far end and a straight part extending from the bending part to the near end, and the rigidity of the bending part is greater than that of the straight part. The shaft comprises the near end, the far end, the bent part adjacent to the far end and the straight part extending from the bent part to the near end, and the rigidity of the bent part is greater than that of the straight part, so that when an endotracheal catheter is inserted, the endotracheal catheter can be directly sleeved on the shaft in advance, and the endotracheal catheter can be directly inserted into the shaft in advance; a doctor holds the handle by hand to insert the endotracheal tube into the body of a patient, insertion guide of the endotracheal tube is completed after the endotracheal tube reaches a preset position in the human body, then the endotracheal tube is left in the human body, the guide device is directly pulled out, and the guide insertion operation of the endotracheal tube can be rapidly completed.

Description

Technical Field

[0001] The utility model relates to the technical field of guide devices, in particular to an endotracheal tube guide device. Background Art

[0002] Many surgical procedures are typically performed while the patient is under general anesthesia. During these procedures, the patient is given a series of medications to induce unconsciousness and muscle paralysis. The medications that cause unconsciousness and muscle paralysis can also interfere with the patient's ability to breathe. Therefore, patients are often intubated during these procedures so they can be connected to an external ventilator or breathing circuit. Patients with non-surgical conditions requiring increased oxygen delivery may also be intubated. Intubation may also be used in other situations.

[0003] During endotracheal intubation, an endotracheal tube is placed in the patient's airway. Typically, the tube is advanced through the patient's nose or mouth into the patient's trachea. The tube is then connected to an external ventilator or breathing circuit, which can then breathe for the patient, delivering oxygen to the patient's lungs.

[0004] The patient's vocal cords and the space between them form the entrance to the trachea; these structures are also called the glottis. The glottis is visible from and accessible through the pharynx. The pharynx is part of the upper airway, located behind the patient's mouth and below the patient's nasal cavity. The mouth and nasal cavity meet in the pharynx. The esophagus and glottis are also accessible through the pharynx. During intubation, the endotracheal tube must be carefully advanced through the patient's pharynx and past the vocal cords into the trachea. Furthermore, it is crucial to place the endotracheal tube at the correct depth when inserting it into the trachea. If placed too shallowly in the trachea, it could fall out. If placed too deeply, only one lung may be ventilated, resulting in poor oxygen delivery to the blood, overinflation of the ventilated lung, and underinflation of the non-ventilated lung. All of these could result in injury or death to the patient.

[0005] The intubation process interferes with the patient's ability to breathe and, therefore, independently deliver oxygen to the body. If the patient is deprived of oxygen for more than two to three minutes, tissue damage may occur, potentially leading to death or permanent brain damage. Therefore, the intubation process must be performed quickly and accurately.

[0006] To address the aforementioned issues, CN111936191 A discloses an introducer for use with an endotracheal intubation system. This introducer allows medical professionals to quickly, accurately, and safely position an endotracheal tube in the airway and to quickly, accurately, and safely perform endotracheal tube replacement procedures. However, the introducer disclosed in CN111936191 A is complex to operate, requiring the assembly and connection of a shaft and a handle. The handle is used to manipulate the shaft, bending and deforming its distal end into the desired shape for insertion of the endotracheal tube into the body. After the endotracheal tube is properly inserted, the introducer is removed. Furthermore, the shaft and handle are complex in structure, resulting in high manufacturing costs. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies and defects of the prior art and to facilitate doctors in inserting the guide device.

[0008] An endotracheal tube guiding device comprises a shaft for guiding an endotracheal tube and a handle fixed to the shaft, wherein the shaft comprises a proximal end, a distal end, a curved portion adjacent to the distal end, and a straight portion extending from the curved portion to the proximal end, wherein the rigidity of the curved portion is greater than that of the straight portion.

[0009] The curved portion is formed of a first material, and the straight portion is formed of a second material.

[0010] The first material is a plastic elastomer material, and the second material is a plastic metal or plastic.

[0011] The hardness (Shore A hardness) of the first material is 50 to 100, and the hardness (Brinell hardness) of the second material is 40 HB to 90 HB.

[0012] The curved portion and the straight portion are annular sections or cylindrical sections.

[0013] The curved portion and the straight portion are formed separately and then connected together.

[0014] Wherein, the elastic coefficient of the curved portion is greater than the elastic coefficient of the straight portion.

[0015] The elastic coefficient of the curved portion is 1.5 to 5 times that of the straight portion.

[0016] Wherein, the shaft for guiding the endotracheal tube is integrally formed by common molding.

[0017] Wherein, the outer diameter of the shaft for guiding the endotracheal tube is smaller than the inner diameter of the endotracheal tube.

[0018] The rigidity of the shaft is greater than that of the endotracheal tube, and after the endotracheal tube is inserted into the shaft, the curved portion is exposed outside the endotracheal tube.

[0019] The utility model provides an endotracheal tube guide device (hereinafter referred to as the guide device). Since the shaft includes a proximal end, a distal end, a curved portion adjacent to the distal end, and a straight portion extending from the curved portion to the proximal end, and the rigidity of the curved portion is greater than that of the straight portion, such a design allows the endotracheal tube to be pre-inserted onto the shaft when inserting the endotracheal tube. The doctor then holds the handle to perform the endotracheal tube insertion operation and inserts the tube into the patient's body. After the tube reaches a predetermined position in the body, the insertion and guidance of the endotracheal tube are completed. The endotracheal tube can then be left in the body and the guide device can be directly withdrawn. This allows the endotracheal tube to be quickly and easily guided and inserted, greatly facilitating the insertion of the endotracheal tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic front view of the endotracheal tube guide device of the present invention.

[0021] Figure 2 This is a schematic front view of the shaft of the endotracheal tube guide device of the present invention.

[0022] Figure 3 Schematic diagram of the insertion of an endotracheal tube into a patient.

[0023] Figure 4 This is a schematic diagram of the endotracheal tube guide device of the present invention guiding the endotracheal tube into the patient's body.

[0024] Figure 5 This is a schematic diagram of the endotracheal tube guide device and the endotracheal tube of the present invention assembled together. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] The endotracheal tube guide device of the embodiment of the present invention relates to a guide device that can be used together with an endotracheal intubation system, and is a slender bougie used for guiding the endotracheal intubation.

[0027] like Figure 1As shown, an endotracheal tube guiding device according to an embodiment of the present invention includes a shaft 10 for guiding an endotracheal tube and a handle 20 fixed to the shaft. The shaft includes a proximal end 14 (referring to the end closer to the doctor), a distal end 11 (referring to the end away from the doctor), a curved portion 12 adjacent to the distal end, and a straight portion 13 extending from the curved portion to the proximal end, wherein the rigidity of the curved portion is greater than that of the straight portion.

[0028] Preferably, when the endotracheal tube is guided and mounted on the shaft for use, the curved portion exposes the patient end of the endotracheal tube.

[0029] The proximal end 14 of the shaft is fixed to the handle 20, and the connecting end of the handle may be provided with a groove structure, and the proximal end may be inserted into the groove structure for interference fit or fixed with a pin, or fixed by welding or bonding.

[0030] In some embodiments, the curved portion is formed from a first material and the straight portion is formed from a second material, such as preferably the curved portion is molded from an elastomeric material and the second material is preferably a moldable metal or plastic, such as preferably molded from aluminum.

[0031] In some embodiments, the hardness (Shore A) of the first material is 50 to 100, and the hardness (Brinell hardness) of the second material is 40 HB to 90 HB. The diameters of the curved portion and the straight portion are the same or different. The outer diameter of the shaft for guiding the endotracheal tube is smaller than the inner diameter of the endotracheal tube to facilitate insertion of the endotracheal tube. In some embodiments, the length of the shaft for guiding the endotracheal tube is greater than the length of the endotracheal tube to be guided. More preferably, during insertion, after the endotracheal tube is placed on the shaft and restrained proximally by the handle, the distal end of the shaft extends or is exposed outside the distal end surface of the endotracheal tube to facilitate guidance.

[0032] In some embodiments, the rigidity of the shaft for guiding the endotracheal tube is greater than the rigidity of the endotracheal tube. When the endotracheal tube is to be inserted onto the shaft, the shaft acts on the shaft, causing the endotracheal tube to bend and deform according to the shape of the shaft, thereby facilitating the insertion and guidance of the endotracheal tube by the shaft.

[0033] In some embodiments, the distal end 12 of the shaft has a rounded and smooth end surface to prevent the distal end 12 from accidentally contacting the surface of the patient's internal body during insertion and causing injury to the patient.

[0034] In some embodiments, the curved portion and the straight portion are annular cross-sections, that is, the curved portion and the straight portion are tubular bodies, preferably circular ring cross-sections, or cylindrical cross-sections, that is, the curved portion and the straight portion are solid rod structures, and there is no cavity or through cavity arranged along the axis inside, preferably a solid cylindrical cross-section. Of course, other non-cylindrical cross-sections and non-circular annular cross-sections are also possible.

[0035] In some embodiments, the curved portion and the straight portion are formed separately and then connected together, which can be a fixed connection or a detachable connection. They can be connected together by forming corresponding connection structures at their respective connection ends. Known connection structures include insertion connection or splicing connection, etc., such as providing a groove on the straight portion and providing a corresponding matching protrusion on the curved portion to achieve docking and connect with glue or hot melt connection, etc. Any available connection method is possible, such as connecting together by overmolding, solvent welding, bonding or other technologies, or gradually tapering at the proximal end of the curved portion so that it can be inserted into the distal end of the straight portion.

[0036] In some embodiments, the shaft for guiding an endotracheal tube can also be integrally molded by co-molding, such as co-molding using different materials or co-molding using the same material. For example, when the shaft is tubular, different stiffness can be provided at the curved portion and the straight portion of the tube by using different wall thicknesses. Alternatively, the shaft can be integrally molded using known co-molding techniques by injecting a harder material into the mold forming the curved portion and a softer material into the mold forming the straight portion.

[0037] In some embodiments, the shaft for guiding the endotracheal tube, whether integrally molded or formed separately and then connected together, has a smooth and continuous surface to facilitate insertion and removal of the endotracheal tube.

[0038] In some embodiments, the elastic coefficient (ie, elastic modulus) of the curved portion is greater than the elastic coefficient (ie, elastic modulus) of the straight portion. More preferably, the elastic coefficient of the curved portion is 1.5 to 5 times the elastic coefficient of the straight portion.

[0039] During use, the endotracheal tube 15 to be inserted is inserted from the distal end 11 of the shaft and sleeved on the shaft 10. After being sleeved in place, the doctor holds the handle fixed to the shaft and inserts the distal end of the shaft into the oral cavity 31 of the patient 30 and inserts it toward the glottis. Since the curvature of the curved portion 12 follows the patient's anatomical characteristics, the endotracheal tube sleeved on the shaft can be smoothly inserted into place according to the patient's anatomical structure, with the straight portion located in the human mouth cavity. After being inserted into place, the endotracheal tube is pinched to keep it still, and the handle 20 is pulled outward to remove the entire guide device, completing the endotracheal tube insertion operation.

[0040] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0041] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0042] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An endotracheal tube guide device, characterized in that: The invention comprises a shaft for guiding an endotracheal tube and a handle fixed to the shaft. The shaft comprises a proximal end, a distal end, a curved portion adjacent to the distal end, and a straight portion extending from the curved portion to the proximal end. The rigidity of the curved portion is less than that of the straight portion.

2. The endotracheal tube guide device according to claim 1, characterized in that: The curved portion is formed of a first material, and the straight portion is formed of a second material.

3. The endotracheal tube guide device according to claim 2, characterized in that: The first material is a plastic elastomer material, and the second material is a plastic metal or plastic.

4. The endotracheal tube guide device according to claim 1, characterized in that: The curved portion and the straight portion have circular cross sections or cylindrical cross sections.

5. The endotracheal tube guide device according to claim 1, characterized in that: The curved portion and the straight portion are formed separately and then connected together.

6. The endotracheal tube guide device according to claim 1, characterized in that: The elastic coefficient of the curved portion is greater than the elastic coefficient of the straight portion.

7. The endotracheal tube guide device according to claim 6, characterized in that: The elastic coefficient of the curved portion is 1.5 to 5 times that of the straight portion.

8. The endotracheal tube guide device according to claim 1, characterized in that: The shaft for guiding the endotracheal tube is integrally formed by common molding.

9. The endotracheal tube guide device according to claim 1, characterized in that: The outer diameter of the shaft for guiding the endotracheal tube is smaller than the inner diameter of the endotracheal tube.

10. The endotracheal tube guide device according to claim 1, characterized in that: The stiffness of the shaft is greater than the stiffness of the endotracheal tube.

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