Comfortable medical nasal cannula with guide core mechanism

Abstract

The utility model discloses a comfortable medical nasal catheter with guide core mechanism. Adopted technical scheme includes: nasal catheter body and the nose plug and the joint that are equipped in the rear end of nasal catheter body in proper order, the joint is equipped with the air inlet hole of intercommunication with nasal catheter body, the nasal catheter body front end is equipped with a group of gas hole, the guide spring is equipped in the nasal catheter body, the guide spring front end is equipped with the protection piece, and the rear end is equipped with handle, the handle is equipped with the center positioning column of air inlet hole plug-in cooperation with the joint, the guide spring rear end is fixed in the center positioning column, and the support spring is integrally formed on the inner wall of nasal catheter body.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, and in particular relates to a medical nasal cannula. Background Technology

[0002] A nasal cannula is a non-invasive airway that prevents the tongue from falling back, quickly opens the airway, and establishes a temporary artificial airway. Because a nasal cannula is inserted from the nasal cavity into the pharynx, and the path between the nasal cavity and the pharynx is winding, there is a risk of nasal mucosal damage and bleeding if the curvature of the nasal cannula does not match the patient's nasal cavity. Traditional nasal cannulas are usually made of relatively soft polyurethane or silicone materials, making insertion difficult and prone to deformation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a comfortable medical nasal cannula with a guide core mechanism.

[0004] To solve the above problems, the technical solution adopted by this utility model includes: a nasal cannula body and a nasal plug and a connector arranged sequentially at the rear end of the nasal cannula body. The connector is provided with an air inlet communicating with the nasal cannula body, and the front end of the nasal cannula body is provided with a set of air outlet holes. The nasal cannula body is characterized by: a guide spring being provided inside the nasal cannula body, a protective member being provided at the front end of the guide spring and a handle being provided at the rear end, the handle being provided with a central positioning post that is inserted and engaged with the air inlet of the connector, the rear end of the guide spring being fixed inside the central positioning post, and a support spring being integrally formed on the inner wall of the nasal cannula body.

[0005] The front end of the guide spring extends beyond the support spring.

[0006] The front end of the guide spring extends 2-4 cm beyond the support spring.

[0007] The connector includes a front connector and a rear connector. The front connector has a tapered positioning surface at its front end and an external thread at its rear end. The rear end of the nasal cannula body is located inside the tapered positioning surface. The nasal plug is fitted on the nasal cannula body and its inner wall is positioned on the tapered positioning surface. The front end of the rear connector has an internal thread that connects with the external thread.

[0008] The air inlet is provided with a tapered guide surface.

[0009] The nasal plug has baffles on both sides.

[0010] The protective component includes a circular head and a fixing post, the fixing post being inserted into the guide spring.

[0011] The fixed post is provided with a positioning hole, and the free end of the guide spring is inserted into the positioning hole.

[0012] The advantages of this novel comfort-type medical nasal cannula with a guide spring mechanism are as follows: By setting a guide spring inside the nasal cannula body that makes it easier to bend, the nasal cannula body can be easily inserted along the curved channel of the nasal cavity. Furthermore, by setting a support spring on the inner wall of the nasal cannula body, problems such as the nasal cannula body being pressed off-center and the inability to remove the guide spring, as well as tracheal obstruction, can be prevented.

[0013] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the medical nasal cannula of this utility model; Figure 2 This is a cross-sectional view of the upper end structure of the medical nasal cannula of this utility model; Figure 3 This is a cross-sectional view of the lower end structure of the medical nasal cannula of this utility model; Figure 4 This is a schematic diagram of the connector structure of this utility model; Figure 5 This is a structural schematic diagram of the protective component of this utility model. Detailed Implementation

[0015] Reference Figure 1-5 As shown, the present invention discloses a comfort-type medical nasal cannula with a guide mechanism, comprising a nasal cannula body 1 and a nasal plug 2 and a connector 3 sequentially disposed at the rear end of the nasal cannula body 1. The connector 3 has an air inlet 4 communicating with the nasal cannula body 1, which is used to connect to the connector of an oxygen supply machine or a trachea. The front end of the nasal cannula body 1 has a set of air outlet holes 5, and a guide spring 6 is disposed inside the nasal cannula body 1. The outer diameter of the guide spring 6 is generally 2 / 3 of the inner diameter of the nasal cannula body 1. The front end of the guide spring 6 has a protective member 7, and the rear end of the guide spring 6 has a handle 8. The protective member 7 is mainly used to prevent the free end of the guide spring 6 from scratching the inner wall of the nasal cannula body 1 or the doctor's gloves. The handle 8 has a central positioning post 9 that inserts and cooperates with the air inlet 4 of the connector 3. The rear end of the guide spring 6 is fixed inside the central positioning post 9, and a support spring 10 is integrally formed on the inner wall of the nasal cannula body 1. During insertion, first insert the guide spring 6 into the nasal cannula body 1 (usually the factory preset), then insert the nasal cannula body 1 into the nasal cavity towards the pharynx until the nasal plug 2 reaches the nostril position, and finally remove the guide spring 6 through the handle 8.

[0016] Preferably, the front end of the guide spring 6 extends beyond the support spring 10. Ideally, the length by which the front end of the guide spring 6 extends beyond the support spring 10 is 2-4 cm. With this structure, the front end of the nasal cannula body 1 is more flexible than the rear end, making it easier to guide the insertion of the nasal cannula body 1 and increasing patient comfort.

[0017] Preferably, the connector 3 includes a front connector 301 and a rear connector 302. The front connector 301 has a tapered positioning surface 11 at its front end and an external thread 12 at its rear end. The rear end of the nasal cannula body 1 is located within the tapered positioning surface 11, and the nasal plug 2 is fitted onto the nasal cannula body 1, with the inner wall of the nasal plug 2 positioned within the tapered positioning surface 11. The front end of the rear connector 302 has an internal thread 13 that connects to the external thread 12. This facilitates the installation and fixation of the nasal cannula body 1 and the nasal plug 2.

[0018] Preferably, the air inlet 4 is provided with a tapered guide surface 14 to guide the guide spring 6 into the nasal cannula body 1, thereby improving the ease of installation.

[0019] Preferably, the nasal plug 2 is provided with baffles 15 on both sides to prevent the nasal plug 2 from completely entering the nostril.

[0020] Preferably, the protective component 7 includes a circular head 16 and a fixing post 17, the fixing post 17 being inserted into the guide spring 6. The fixing post 17 has a positioning hole 18, and the free end of the guide spring 6 is inserted into the positioning hole 18. The above-described protective component 7 structure has advantages such as ideal protective effect, simple structure, convenient installation, and resistance to detachment.

[0021] The foregoing is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A comfort-type medical nasal cannula with a guide core mechanism, comprising a nasal cannula body (1) and a nasal plug (2) and a connector (3) sequentially disposed at the rear end of the nasal cannula body (1), wherein the connector (3) is provided with an air inlet (4) communicating with the nasal cannula body (1), and the front end of the nasal cannula body (1) is provided with a set of air outlets (5), characterized in that: The nasal cannula body (1) is provided with a guide spring (6), the front end of the guide spring (6) is provided with a protective part (7) and the rear end is provided with a handle (8). The handle (8) is provided with a central positioning post (9) that is inserted into the air inlet (4) of the connector (3). The rear end of the guide spring (6) is fixed in the central positioning post (9). The inner wall of the nasal cannula body (1) is integrally formed with a support spring (10).

2. The comfort-type medical nasal cannula with a guide core mechanism according to claim 1, characterized in that: The front end of the guide spring (6) extends beyond the support spring (10).

3. The comfort-type medical nasal cannula with a guide core mechanism according to claim 2, characterized in that: The front end of the guide spring (6) extends 2-4 cm beyond the support spring (10).

4. The comfort-type medical nasal cannula with a guide core mechanism according to claim 1, characterized in that: The connector (3) includes a front connector (301) and a rear connector (302). The front connector (301) has a tapered positioning surface (11) at the front end and an external thread (12) at the rear end. The nasal cannula body (1) is located inside the tapered positioning surface (11) at the rear end. The nasal plug (2) is fitted on the nasal cannula body (1) and its inner wall is positioned on the tapered positioning surface (11). The rear connector (302) has an internal thread (13) at the front end that connects to the external thread (12).

5. The comfort-type medical nasal cannula with a guide core mechanism according to claim 1, characterized in that: The air inlet (4) is provided with a tapered guide surface (14).

6. The comfort-type medical nasal cannula with a guide core mechanism according to claim 1, characterized in that: The nasal plug (2) is provided with baffles (15) on both sides.

7. The comfort-type medical nasal cannula with a guide core mechanism according to claim 1, characterized in that: The protective component (7) includes a circular head (16) and a fixing post (17), the fixing post (17) being inserted into the guide spring (6).

8. The comfort-type medical nasal cannula with a guide core mechanism according to claim 7, characterized in that: The fixed column (17) is provided with a positioning hole (18), and the free end of the guide spring (6) is inserted into the positioning hole (18).

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