Spiral adapter for metal tracheostomy tube

Abstract

The invention relates to the technical field of medical instruments, in particular to a metal tracheostomy tube spiral adapter which solves the technical problems that an existing metal tracheostomy tube adapter is prone to tube disengagement, and the requirement for single-tube multi-model variable-diameter use cannot be met. The tail end of the adapter head part is fixedly connected with an adapter tail part, the outer surface of the adapter head part is fixedly provided with a convex block, the outer side of the adapter head part is provided with a metal tracheostomy tube main body, and a fastening accessory is connected between the adapter head part and the metal tracheostomy tube main body; in the transferring process, the transferring head makes contact with the part, with the same diameter, of the metal tracheostomy tube body, and the fastening accessory makes contact with the inner wall of the metal tracheostomy tube body, so that the friction force between the transferring head and the metal tracheostomy tube body is increased; and the stable connection between the adapter head and the metal tracheostomy tube main body can be ensured, so that the tube separation condition in the use process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a metal tracheotomy cannula spiral conversion joint. Background Art

[0002] Metal cannulas play an important role in maintaining the survival of patients who have undergone tracheotomy after laryngeal cancer surgery or who suffer from sequelae of cerebrovascular disease. Metal cannulas can be connected to airway humidification oxygen therapy devices, which provide a stable channel for air to enter the lungs, avoid airway obstruction caused by laryngeal or tracheal lesions, and thus ensure the patient's normal breathing. However, the sizes of metal cannulas used by different patients are different, while the air supply pipes of oxygen therapy devices are of a unified standard, so a conversion joint is required between the two.

[0003] However, the existing metal tracheotomy tube conversion joint has a smooth surface, and the head of the plastic conversion joint is only subject to friction at the position with the same diameter as the inner diameter of the metal tracheotomy tube, and the position of the head that is thinner is not subject to force, so the friction generated is very small. During the use of this conversion joint, the patient is prone to tube detachment, which has an adverse effect on the treatment effect and may even threaten the patient's life safety. In addition, the single-tube single-model conversion joint cannot meet the needs of single-tube multi-model variable diameter use. When the patient replaces a different model of metal tracheotomy tube, a matching conversion joint must be purchased again, thereby increasing the patient's treatment cost. There are also solutions in the prior art that use a conical head to adapt to different tube diameters, and some even have annular protrusions set on the conical surface. However, when these conical heads are inserted into the metal tracheotomy tube, only the part that matches the inner diameter of the metal tracheotomy tube can generate friction, and the other parts do not contact the inner wall of the tube. Therefore, the friction is not large, and it is very easy to cause tube detachment. Especially during ventilation, the air pressure and careless pulling may cause the tube to detach. The fundamental reason is the limited contact area. Of course, some people have proposed a solution in which the male and female ports are tapered to each other, but this solution not only requires the modification of the adapter, but also requires corresponding modifications to the metal tracheotomy cannula, which is not applicable to the currently mature metal tracheotomy cannula system. Others have proposed engraving multiple grooves along the axial direction on the conical head, so that the joint will automatically tighten when inserted into different inner diameters, but this not only has poor airtightness but also still cannot solve the risk of tube detachment. Although the threaded connection is the most secure, the connection operation is complicated and is not suitable for emergency medical scenarios, and the metal tracheotomy cannula also needs to be threaded.

[0004] How to adapt to the existing various types and sizes of casings while ensuring that each type of casing can be tightly connected, ensuring air tightness and reducing the risk of detachment is a technical problem that needs to be solved urgently. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a metal tracheotomy tube spiral conversion joint, which can solve the problem that the existing metal tracheotomy tube conversion joint is not only prone to tube detachment, but also the single-tube single-model conversion joint cannot meet the demand for single-tube multi-model diameter change, thereby increasing the patient's treatment cost. The unique conical spiral structure design can increase the friction between the conversion joint and the inner wall of the metal tracheotomy tube, thereby ensuring the stability of the connection. At the same time, the conversion joint also has the function of multi-model diameter change, which can fully meet the replacement needs of metal tracheotomy tubes of different models.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a metal tracheotomy cannula spiral conversion joint, comprising an adapter part, the end of the adapter part is fixedly connected to the adapter tail, the outer surface of the adapter part is fixedly provided with a convex block, the outer side of the adapter part is provided with a metal tracheotomy cannula body, and a fastening accessory is connected between the adapter part and the metal tracheotomy cannula body, and the fastening accessory is used to fasten the adapter part and the metal tracheotomy cannula body;

[0009] The outer surface of the fastening accessories is provided with grooves, the protrusions and the grooves are connected to each other, and elastic connecting ropes are connected between the fastening accessories.

[0010] Through the above technical solution, after the fastening fitting and the adapter part are matched and inserted into the metal tracheotomy cannula body together, in addition to the parts of the adapter part and the metal tracheotomy cannula body with the same diameter contacting each other, the fastening fitting also contacts the inner wall of the metal tracheotomy cannula body, thereby increasing the friction between the adapter part and the metal tracheotomy cannula body, which is conducive to ensuring a stable connection between the adapter part and the metal tracheotomy cannula body;

[0011] The multiple grooves of the fastening accessories can be snapped onto any layer of protrusions on the adapter to achieve outer diameter change; the protrusions that achieve snap-on connection are called matching protrusions; the layer of protrusions adjacent to the lower side of the matching protrusions is called edge protrusions; after snap-on connection, the outer diameter of the fastening accessories is the same as the outer diameter of the edge protrusions, both are equal to the inner diameter of the metal tracheotomy cannula body, and both are in close contact with the inner wall of the metal tracheotomy cannula body.

[0012] Furthermore, the adapter head has a conical structure, and the diameter of the adapter head is smaller than the diameter of the adapter tail.

[0013] Through the above technical solution, the conversion joint is mainly composed of two parts: the conversion joint head and the conversion tail. Through the conversion joint, it can be freely converted into an international universal interface according to the inner diameter model of the metal tracheotomy tube body.

[0014] Furthermore, the bump has an annular structure, and the longitudinal cross-section of the bump has a semicircular structure. The bumps located on the same vertical plane are distributed at equal distances on the outer surface of the adapter part. Two adjacent bumps are tangent to each other one by one, the diameters of the longitudinal cross-sections of the bumps are equal, and the centers of the bumps are located on the outer surface of the adapter part.

[0015] Through the above technical solution, since a plurality of protrusions are evenly distributed on the outer surface of the adapter part and the protrusions are in an annular structure, it is convenient to connect the adapter part to the metal tracheotomy cannula body with different inner diameters, so as to achieve the purpose of using a single tube with multiple models with variable diameters.

[0016] Furthermore, the longitudinal cross section of the groove is a semicircular structure, and the diameter of the longitudinal cross section of the groove is equal to the diameter of the longitudinal cross section of the protrusion.

[0017] Through the above technical solution, since the groove opened in the fastening accessory can cooperate with the protrusion on the outer surface of the adapter head, and since the diameter of the longitudinal section of the groove is equal to the diameter of the longitudinal section of the protrusion, the fastening accessory can cooperate with any protrusion position of the adapter head.

[0018] Furthermore, the centers of the longitudinal sections of two adjacent grooves are collinear, and a line connecting the centers of the two adjacent grooves is parallel to the hypotenuse of the longitudinal conical section of the adapter head, and the two adjacent grooves are tangent to each other.

[0019] Through the above technical solution, the fastening accessory can be inserted into the metal tracheotomy tube body after being matched with the adapter part, so that the adapter part and the metal tracheotomy tube body are stably connected.

[0020] Furthermore, the fastening accessories are symmetrically distributed about the longitudinal center line of the adapter portion, and the two ends of the elastic connecting rope are respectively connected to the tangent positions of the grooves of two adjacent fastening accessories.

[0021] Through the above technical solution, after the fastening accessory is installed on the adapter part, the elastic connecting rope can be stuck between adjacent protrusions at different upper and lower positions of the adapter part, so that the fastening accessory is stabilized on the outside of the adapter part.

[0022] Furthermore, a sealing ring is provided at the top end of the adapter portion, and the sealing ring is connected to the metal tracheotomy cannula body.

[0023] Through the above technical solution, the sealing ring can be used to seal the connection between the top of the adapter part and the metal tracheotomy cannula body, thereby ensuring the sealing of the connection between the adapter part and the metal tracheotomy cannula body.

[0024] Furthermore, an inclined section is provided at the upper end of the fastening fitting, and the slope of the inclined section is equal to the slope of the adapter portion.

[0025] Through the above technical solution, an inclined cross section is provided between the top surface of the fastening accessory and the side surface thereof, and this design can facilitate the fastening accessory to be inserted into the interior of the metal tracheotomy cannula body.

[0026] Furthermore, the edge protrusion is airtightly connected to the inner wall of the metal tracheotomy sleeve body.

[0027] Furthermore, the end of the fastening accessory with the groove is made of a hard material, and the end of the fastening accessory in contact with the metal tracheotomy tube body is made of a flexible material.

[0028] A method for using a metal tracheotomy cannula spiral conversion joint comprises the following steps:

[0029] First, the fastening accessory is installed on the adapter part, so that the protrusions on the outer surface of the adapter part are inserted into the grooves on the outer surface of the fastening accessory, and the elastic connecting rope is inserted between the adjacent protrusions at different upper and lower positions of the adapter part, so that the fastening accessory is stabilized on the outer side of the adapter part, and the outer surface of the fastening accessory is on the same cylindrical surface;

[0030] Then the fastening fittings and the adapter part are inserted into the metal tracheotomy cannula body together. When the fastening fittings and the adapter part are connected to the metal tracheotomy cannula body, the conversion joint can be used to convert the inner diameter of the metal tracheotomy cannula body into an international universal interface outer diameter according to the inner diameter model of the metal tracheotomy cannula body, thereby meeting the needs of using a single tube with multiple models with variable diameters.

[0031] And during the conversion process, the adapter part and the part with the same diameter as the metal tracheostomy tube body are in contact with each other, and the outer diameter of a protrusion next to the fastening accessory is equal to the outer diameter formed by the fastening accessory, so that the protrusion and the fastening accessory are in close contact with the inner diameter of the metal tracheostomy tube body, thereby increasing the friction between the adapter part and the metal tracheostomy tube body, which is beneficial to ensure the stable connection between the adapter part and the metal tracheostomy tube body, thereby avoiding the tube from coming off during use, and is beneficial to ensuring the safety and efficiency of the patient in the process of using the metal tracheostomy tube body to connect the airway humidification oxygen therapy device.

[0032] The invention and beneficial effects of the present invention:

[0033] In the present invention, during the conversion process, in addition to the adapter part and the part of the metal tracheostomy tube body with the same diameter contacting each other, the fastening fittings also contact the inner wall of the metal tracheostomy tube body, and the contact is a long distance in the axial direction, thereby increasing the friction between the adapter part and the metal tracheostomy tube body, which is conducive to ensuring the stable connection between the adapter part and the metal tracheostomy tube body, thereby avoiding the tube from coming off during use, and the grooves on the outer surface of the fastening fittings can match with the bumps on the outer surface of the adapter part, and the radius of the grooves and the bumps are equal, so the fastening fittings can match with any raised position of the adapter part, so that it is convenient to connect the adapter part with the metal tracheostomy tube body of different inner diameters through the fastening fittings, thereby meeting the needs of single-tube multi-model variable diameter use, which is conducive to reducing the cost of patient treatment. While adapting to various models and sizes of tubes, it can ensure that each model of tube can be tightly connected to reduce the risk of tube coming off. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the overall explosion structure of the present invention;

[0036] Figure 3 It is a schematic cross-sectional structure diagram of the metal tracheotomy cannula body in the present invention;

[0037] Figure 4 It is a schematic diagram of the connection structure between the transfer joint part and the fastening accessory of the present invention;

[0038] Figure 5 It is a schematic diagram of the front cross-section structure of the transfer joint and the protrusion in the present invention;

[0039] Figure 6 It is a schematic diagram of the front cross-section structure of the fastening accessory in the present invention;

[0040] Figure 7 It is a structural schematic diagram of the second embodiment of the present invention.

[0041] Among them: 1. adapter head; 2. adapter tail; 3. bump; 4. fastening accessories; 5. groove; 6. elastic connecting rope; 7. metal tracheotomy cannula body; 8. sealing ring. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example 1: Please refer to Figure 1-Figure 6 The present invention provides a technical solution: a metal tracheotomy tube spiral conversion joint, comprising an adapter part 1, a conversion tail part 2 is fixedly connected to the end of the adapter part 1, a multi-layer protrusion 3 is fixedly arranged on the outer surface of the adapter part 1, a metal tracheotomy tube body 7 is arranged on the outer side of the adapter part 1, a fastening accessory 4 is connected between the adapter part 1 and the metal tracheotomy tube body 7, the fastening accessory 4 is used to fasten the adapter part 1 to the metal tracheotomy tube body 7, a groove 5 is opened on the outer surface of the fastening accessory 4, the protrusion 3 and the groove 5 are connected to each other, and an elastic connecting rope 6 is connected between the fastening accessories 4, please refer to Figure 1-Figure 6 The adapter head 1 is a conical structure, and the diameter of the adapter head 1 is smaller than the diameter of the adapter tail 2. The outer surfaces of the plurality of fastening fittings 4 are on the same cylindrical side, thereby ensuring that they can closely contact the inner wall of the metal tracheotomy cannula body 7.

[0044] The method of using the conversion joint is: the conversion joint is mainly composed of two parts: an adapter head 1 and an adapter tail 2. The outer diameter of the interface of the adapter tail 2 is 15mm and the length is 2cm. The inner diameter of the adapter head 1 is 6mm~14mm and the length is 2cm. The total length of the conversion joint is 4~4.5cm, and the conversion joint is made of food-grade PP material. First, install the fastening accessory 4 and the adapter head 1 so that the protrusion 3 on the outer surface of the adapter head 1 is inserted into the groove 5 opened on the outer surface of the fastening accessory 4, and ensure that the elastic connecting rope 6 is stuck between adjacent protrusions 3 at different upper and lower positions of the adapter head 1, so that the fastening accessory 4 is stabilized on the outside of the adapter head 1, and at the same time, the outer surface of the fastening accessory 4 is on the same cylindrical surface. Then, the fastening fitting 4 and the adapter part 1 are inserted into the metal tracheostomy tube body 7. The end of the fastening fitting 4 with the groove 5 is made of hard material, while the end of the fastening fitting 4 in contact with the metal tracheostomy tube body 7 is made of flexible material. When the fastening fitting 4 and the adapter part 1 are connected to the metal tracheostomy tube body 7, the conversion joint can be used to convert the inner diameter of the metal tracheostomy tube body 7 to the outer diameter of the international universal interface, thereby meeting the needs of single-tube multi-model variable diameter use. In addition, during the conversion process, the adapter part 1 and the metal tracheostomy tube body 7 are in contact with each other, such as Figure 6 As shown, the outer diameter of a protrusion next to the fastening accessory 4 is equal to the outer diameter formed by the fastening accessory 4, so that the protrusion and the fastening accessory 4 are in close contact with the inner diameter of the metal tracheostomy tube body 7, thereby increasing the friction between the adapter part 1 and the metal tracheostomy tube body 7, which is beneficial to ensure the stable connection between the adapter part 1 and the metal tracheostomy tube body 7, thereby avoiding the tube from coming off during use, and is beneficial to ensure the safety and efficiency of the patient in the process of using the metal tracheostomy tube body 7 to connect the airway humidification oxygen therapy device.

[0045] See also Figure 1-Figure 6 The protrusion 3 is annular in structure, and the longitudinal section of the protrusion 3 is semicircular in structure. The protrusions 3 on the same vertical plane are distributed at equal distances on the outer surface of the adapter head 1. Two adjacent protrusions 3 are tangent to each other, and the diameters of the longitudinal sections of the protrusions 3 are equal. The center of the protrusion 3 is located on the outer surface of the adapter head 1. Thus, layers of strip-shaped protrusions 3 with semicircular cross sections distributed along the circumferential direction around the outer surface of the adapter head 1 are formed.

[0046] The size relationship between the protrusion 3 and the fastening fitting 4 is: the protrusion 3 is annular and is equidistantly distributed on the outer surface of the adapter 1, and the longitudinal section of the protrusion 3 is a semicircular structure, the radius of the semicircular section of the protrusion 3 at different positions is equal, all R, and the adjacent protrusions 3 are tangent, and the distance between the centers of the semicircular sections of two adjacent protrusions 3 is 2R, such as Figure 6-Figure 7 As shown, assuming that the upper end length of the fastening accessory 4 is L, the lower end length of the fastening accessory 4 is H, the height of the fastening accessory 4 is M, and the vertex angle of the fastening accessory 4 (the angle between the outer vertical side and the extension line of the inner hypotenuse) is α, that is, the angle between the hypotenuse of the cross section of the adapter head 1 and the central axis is α, the groove 5 of the fastening accessory corresponds to the protrusion 3, and the groove is semicircular with a radius of R. The structures of the various parts of the fastening accessory meet the following requirements:

[0047] H=R+R*sinα,

[0048] L=H+2nR*sinα,

[0049] M=2nR*cosα

[0050] Where n is the number of grooves 5 in the fastening fitting 4;

[0051] The multiple grooves of the fastening accessory 4 can be snapped onto any layer of protrusions on the adapter part 1 to achieve outer diameter change; the protrusion that achieves snap-on connection is called a matching protrusion; the layer of protrusions adjacent to the lower side of the matching protrusion is called an edge protrusion; after snap-on connection, the outer diameter of the fastening accessory is the same as the outer diameter of the edge protrusion, both are equal to the inner diameter of the metal tracheotomy cannula body 7, and both are in close contact with the inner wall of the metal tracheotomy cannula body 7. Thus, it can be ensured that when the fastening accessory 4 and the adapter part 1 are inserted into the metal tracheotomy tube body 7 together, the leftmost side of the fastening accessory 4 (length M) is in parallel contact with the inner wall of the metal tracheotomy tube body 7, and its extension line is tangent to the protrusion 3 on the adapter part 1 that is not matched with the fastening accessory 4. In this way, it can be ensured that the diameter of the position where the fastening accessory 4 is connected (the upper half in the figure) is the same as the diameter of the position of the lowest protrusion 3 in the figure, and both are equal to the inner diameter of the metal tracheotomy tube body 7, so that both are in close contact with the metal tracheotomy tube body 7, ensuring a firm connection, and the lowest protrusion 3 is airtight. Of course, in actual processing, the processing errors of the two can be made positive errors, so that the diameters of the corresponding positions of the two are greater than the inner diameter of the metal tracheotomy tube body 7, thereby further ensuring a firm connection. The M edge of the fastening accessory 4 can be provided with anti-slip textures, so that the friction between the adapter part 1 and the metal tracheotomy tube body 7 is increased, so that the two are tightly connected. According to Figure 6 It can be seen that the fastening fittings 4 can be snapped onto any layer of the protrusions 3 of the adapter part 1 to achieve outer diameter change, thereby achieving the ability to adapt to metal tracheotomy cannula bodies 7 of various inner diameters using only a single adapter part 1 and a single fastening fitting 4.

[0052] See also Figure 1-Figure 6 The longitudinal cross-section of the groove 5 is a semicircular structure, the diameter of the longitudinal cross-section of the groove 5 is equal to the diameter of the longitudinal cross-section of the protrusion 3, the centers of the longitudinal cross-sections of two adjacent grooves 5 are collinear, and the line connecting the centers of the two adjacent grooves 5 is parallel to the hypotenuse of the longitudinal conical cross-section of the adapter head 1, and the two adjacent grooves 5 are tangent.

[0053] It should be noted that: multiple grooves 5 with semicircular cross-sections are equidistantly distributed on the side of the fastening accessory 4, and the radius of the semicircular cross-section of the groove 5 is R, and the distance between the centers of the semicircular cross-sections of two adjacent grooves 5 is 2R. Since the grooves 5 opened on the outer surface of the fastening accessory 4 can cooperate with the protrusions 3 on the outer surface of the adapter part 1, and the radii of the grooves 5 and the protrusions 3 are equal, the fastening accessory 4 can cooperate with any raised position of the adapter part 1, thereby facilitating the connection of the adapter part 1 with the metal tracheotomy cannula body 7 with different inner diameters through the fastening accessory 4.

[0054] See also Figure 1-Figure 4 The fastening accessories 4 are symmetrically distributed about the longitudinal center line of the adapter head 1 , and the two ends of the elastic connecting rope 6 are respectively connected to the tangential positions of the grooves 5 of two adjacent fastening accessories 4 .

[0055] The function of the elastic connecting rope 6 is that the fastening accessories 4 appear in pairs, for example, can be set to 4 pieces, which are arranged opposite to each other and installed and matched in the four directions of front, back, left and right of the adapter part 1. After the fastening accessories 4 are installed with the adapter part 1, the elastic connecting rope 6 can be stuck between adjacent protrusions 3 at different positions above and below the adapter part 1, so that the fastening accessories 4 are stabilized on the outside of the adapter part 1.

[0056] See also Figure 1-Figure 3 A sealing ring 8 is provided at the top end of the adapter part 1, and the sealing ring 8 is connected to the metal tracheotomy tube body 7.

[0057] The function of the sealing ring 8 is that after the adapter part 1 is installed inside the metal tracheotomy cannula body 7, the sealing ring 8 can be used to seal the connection between the top of the adapter part 1 and the metal tracheotomy cannula body 7, thereby ensuring the sealing of the connection between the adapter part 1 and the metal tracheotomy cannula body 7. Of course, when the metal tracheotomy cannula is not deep enough and has a large inner diameter, one or more layers of protrusions at the top of the adapter part have been cut off.

[0058] Embodiment 2: The difference between this embodiment and embodiment 1 is: Please refer to Figure 7 , the upper end of the fastening fitting 4 is provided with an inclined section, and the slope of the inclined section is equal to the slope of the adapter part 1;

[0059] It is worth mentioning that an inclined cross section is provided between the top surface of the fastening accessory 4 and the side surface thereof, and this design can facilitate the fastening accessory 4 to be inserted into the metal tracheotomy cannula body 7 .

[0060] Embodiment three: When the inner diameter of the metal tracheotomy cannula body 7 is different, a layer of protrusions 3 with the same or slightly larger inner diameter as the metal tracheotomy cannula body 7 is determined on the adapter part 1 as the edge protrusion; the bottom groove 5 of the fastening accessory 4 is clamped on the layer of protrusions 3 immediately above the edge protrusion 3 (as a matching protrusion); according to the number of grooves 5 of the fastening accessory 4, the remaining grooves 5 are clamped on the corresponding matching protrusions 3 of different layers in turn; if the insertion opening of the metal tracheotomy cannula body 7 is shallow, one or more layers of protrusions 3 at the top of the adapter part 1 are subtracted as needed.

[0061] Embodiment 4: This embodiment provides a method for using an adapter:

[0062] First, install the fastening accessory 4 and the adapter part 1 so that the protrusion 3 on the outer surface of the adapter part 1 is inserted into the groove 5 provided on the outer surface of the fastening accessory 4, and ensure that the elastic connecting rope 6 is stuck between the adjacent protrusions 3 at different upper and lower positions of the adapter part 1, so that the fastening accessory 4 is stabilized on the outside of the adapter part 1, and at the same time, the outer surface of the fastening accessory 4 is on the same cylindrical surface. Then insert the fastening accessory 4 and the adapter part 1 together into the metal tracheostomy tube body 7. The end of the fastening accessory 4 with the groove 5 is made of a hard material, and the end of the fastening accessory 4 in contact with the metal tracheostomy tube body 7 is made of a flexible material. When the fastening accessory 4 and the adapter part 1 are connected to the metal tracheostomy tube body 7, the conversion joint can be used to convert the inner diameter model of the metal tracheostomy tube body 7 into an international universal interface outer diameter, thereby meeting the needs of single-tube multi-model variable diameter use. In addition, during the conversion process, the parts of the adapter part 1 and the metal tracheostomy tube body 7 with the same diameter contact each other, such as Figure 6 As shown, the outer diameter of a protrusion next to the fastening accessory 4 is equal to the outer diameter formed by the fastening accessory 4, so that the protrusion and the fastening accessory 4 are in close contact with the inner diameter of the metal tracheostomy tube body 7, thereby increasing the friction between the adapter part 1 and the metal tracheostomy tube body 7, which is beneficial to ensure the stable connection between the adapter part 1 and the metal tracheostomy tube body 7, thereby avoiding the tube from coming off during use, and is beneficial to ensure the safety and efficiency of the patient in the process of using the metal tracheostomy tube body 7 to connect the airway humidification oxygen therapy device.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal tracheotomy cannula spiral adapter, comprising an adapter portion (1), characterized in that: The end of the adapter part (1) is fixedly connected with an adapter tail part (2), the adapter part (1) is in a conical structure, the top diameter of the adapter part (1) is smaller than the bottom diameter, a plurality of protrusions (3) are fixedly arranged on the outer surface of the adapter part (1), the protrusions (3) are in an annular structure, the longitudinal cross section of the protrusions (3) is in a semicircular structure, the protrusions (3) located on the same vertical plane are equidistantly distributed on the outer surface of the adapter part (1), two adjacent protrusions (3) are tangent to each other, the longitudinal cross sections of the protrusions (3) are equal in diameter, the centers of the protrusions (3) are located on the outer surface of the adapter part (1), a metal tracheostomy tube body (7) is arranged on the outer side of the adapter part (1), at least two fastening accessories (4) are connected between the adapter part (1) and the metal tracheostomy tube body (7), the fastening accessories (4) are used to fasten the adapter part (1) and the metal tracheostomy tube body (7); The inner surface of the fastening fitting (4) is provided with a plurality of grooves (5), the centers of the longitudinal sections of two adjacent grooves (5) are collinear, and the line connecting the centers of the two adjacent grooves (5) is parallel to the hypotenuse of the longitudinal conical section of the adapter head (1), and the two adjacent grooves (5) are tangent to each other, the plurality of protrusions (3) are connected to the corresponding grooves (5) in a concave-convex matching manner, and an elastic connecting rope (6) is connected between the fastening fittings (4); The multiple grooves of the fastening accessory (4) can be snapped onto any layer of protrusions of the adapter part (1) to achieve outer diameter change; the protrusions that achieve snapping are called matching protrusions; the layer of protrusions immediately below the matching protrusions are called edge protrusions; after snapping, the outer diameter of the fastening accessory is the same as the outer diameter of the edge protrusions, both are equal to the inner diameter of the metal tracheostomy tube body (7), and both are in close contact with the inner wall of the metal tracheostomy tube body (7).

2. A metal gas cutting sleeve spiral conversion joint according to claim 1, characterized in that: The longitudinal cross section of the groove (5) is a semicircular structure, and the diameter of the longitudinal cross section of the groove (5) is equal to the diameter of the longitudinal cross section of the protrusion (3).

3. The metal gas cutting sleeve spiral conversion joint according to claim 1, characterized in that: The fastening accessories (4) are symmetrically distributed about the longitudinal center line of the adapter portion (1), and the two ends of the elastic connecting rope (6) are respectively connected to the grooves (5) of two adjacent fastening accessories (4) at tangential positions.

4. The metal gas cutting sleeve spiral conversion joint according to claim 1, characterized in that: A sealing ring (8) is provided at the top end of the adapter portion (1), and the sealing ring (8) is connected to the metal tracheotomy cannula body (7).

5. The metal gas cutting sleeve spiral conversion joint according to claim 1, characterized in that: The upper end of the fastening accessory (4) is provided with an inclined cross section, and the slope of the inclined cross section is equal to the slope of the adapter portion (1).

6. The metal gas cutting sleeve spiral conversion joint according to claim 1, characterized in that: The edge protrusion is in airtight connection with the inner wall of the metal tracheotomy tube body (7).

7. The metal gas cutting sleeve spiral conversion joint according to claim 1, characterized in that: The end of the fastening accessory (4) provided with the groove (5) is made of a hard material, while the end of the fastening accessory (4) in contact with the metal tracheotomy tube body (7) is made of a flexible material.

8. A method for using a metal gas cutting cannula spiral conversion joint according to any one of claims 1 to 7, characterized in that: The following steps are involved: First, the fastening accessory (4) and the adapter part (1) are mounted so that the protrusion (3) on the outer surface of the adapter part (1) is inserted into the groove (5) provided on the outer surface of the fastening accessory (4), and the elastic connecting rope (6) is inserted between adjacent protrusions (3) at different upper and lower positions of the adapter part (1), so that the fastening accessory (4) is stabilized on the outer side of the adapter part (1), and at the same time, the outer surface of the fastening accessory (4) is on the same cylindrical surface; Then, the fastening fitting (4) and the adapter part (1) are inserted into the metal tracheostomy tube body (7) together. After the fastening fitting (4) and the adapter part (1) are connected to the metal tracheostomy tube body (7), the outer diameter of the metal tracheostomy tube body (7) can be freely converted into an international universal interface through a conversion joint according to the inner diameter model of the metal tracheostomy tube body (7), thereby meeting the need for the use of a single tube with multiple models of variable diameters. Furthermore, during the switching process, the adapter part (1) and the part of the metal tracheostomy tube body (7) having the same diameter are in contact with each other, and the outer diameter of a protrusion adjacent to the fastening accessory (4) is equal to the outer diameter formed by the fastening accessory (4), so that the protrusion and the fastening accessory (4) are in close contact with the inner diameter of the metal tracheostomy tube body (7), thereby increasing the friction between the adapter part (1) and the metal tracheostomy tube body (7), which is conducive to ensuring a stable connection between the adapter part (1) and the metal tracheostomy tube body (7), thereby avoiding the tube from falling off during use, and is conducive to ensuring the safety and efficiency of the patient in the process of using the metal tracheostomy tube body (7) to connect the airway humidification oxygen therapy device.

9. The method for using the metal gas cutting sleeve spiral conversion joint according to claim 8, characterized in that: The following steps are involved: When the inner diameters of the metal tracheostomy tube body (7) are different, a layer of protrusions (3) having the same or slightly larger inner diameter as the metal tracheostomy tube body (7) is determined on the adapter portion (1) as edge protrusions, and the protrusions that achieve snap connection are called matching protrusions (3); Then, the bottom groove (5) of the fastening accessory (4) is clamped on a layer of matching protrusions (3) immediately above the layer of edge protrusions; according to the number of grooves (5) of the fastening accessory (4), the remaining grooves (5) are clamped on the matching protrusions (3) of the corresponding different layers in sequence. After clamping, the outer diameter of the fastening accessory (4) is the same as the outer diameter of the edge protrusion (3), and both are equal to the inner diameter of the metal tracheotomy sleeve body (7).

10. The method for using the metal gas cutting sleeve spiral conversion joint according to claim 9, characterized in that: The following steps are involved: If the insertion opening of the metal tracheotomy cannula body (7) is relatively shallow, one or more layers of protrusions (3) at the top of the adapter portion (1) are cut off as required.

Images