Respiration connector convenient to replace

Abstract

The utility model relates to the technical field of medical instruments, in particular to a breathing connector convenient to replace, which comprises at least two connectors connected in an inserting and matching mode, and a clamping portion is arranged between every two adjacent connectors. The clamping part comprises a guide part and a limiting part which are formed on the inner wall of any joint, and an insertion part formed on the other joint; the guide piece is provided with a guide surface deviating to one side of the insertion end of the connector, and the limiting piece is arranged on the inner wall of the connector; a notch is formed in the outer wall of the inserting accessory, one side of the head of the inserting accessory is attached to the guide face to enter the connector, and the limiting piece is embedded into the notch. According to the utility model, the guide pieces with the guide surfaces are arranged on the inner wall of the joint, so that the insertion accessories can move along the guide surfaces when being inserted into the joint in a blind manner and are finally limited between the outer walls of the adjacent guide pieces, and the conditions of dislocation and blockage in the insertion process of the interface are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a breathing interface which is convenient to replace. Background Art

[0002] The plug-in breathing interface is a widely used interface form in medical devices. How to achieve the quick and convenient plugging and unplugging of the plug-in interface is an important technical problem in this field. At present, during the blind plugging process of the breathing interface, there is an easy problem that it cannot be effectively and quickly connected due to the misalignment of the fastening structure. This is very fatal in front of medical staff who are racing against time. Therefore, the utility model has developed a breathing interface which is convenient to replace to solve the problems existing in the prior art. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a breathing interface which is convenient to replace to solve the problem that it cannot be quickly blindly plugged due to the design defect of the interface in the prior art.

[0004] The technical solution of the utility model is: a breathing interface which is convenient to replace, comprising at least two mating connectors, and a clamping portion is provided between adjacent connectors;

[0005] The clamping portion includes a guiding member and a limiting member formed on the inner wall of any connector, and a plug-in member formed on the other connector; the guiding member has a guiding surface biased towards the insertion end side of the connector, and the limiting member is constructed on the inner wall of the connector; a notch is provided on the outer wall of the plug-in member, and the head side of the plug-in member fits into the connector along the guiding surface, and the limiting member is embedded into the notch.

[0006] Preferably, at least two guiding members, limiting members and plug-in members are provided respectively, and the numbers are the same;

[0007] The limiting member is formed between the outer walls of adjacent guiding members, and the plug-in member is accommodated between the outer walls of adjacent guiding members to realize the rotational limit of adjacent connectors in the axial direction;

[0008] The notch is provided along the circumferential direction of the plug-in member and cooperates with the limiting member to realize the axial limit of adjacent connectors.

[0009] Preferably, between a pair of adjacent connectors, a positioning block formed on any connector and a positioning groove formed on the other connector are further included, and the positioning block is embedded into the positioning groove.

[0010] Preferably, it is set that the guiding member and the limiting member are provided on the first connector, and the plug-in member is formed on the second connector;

[0011] The first connector includes a first sleeve, the positioning block is constructed on the outer wall of the first sleeve, and the guiding member and the limiting member are constructed on the inner wall of the first sleeve;

[0012] The second connector includes a second sleeve disposed on the outer peripheral side of the fitting, the positioning groove is constructed at the end of the second sleeve, and the first sleeve is received between the second sleeve and the fitting.

[0013] Preferably, the second sleeve is configured as a 1:40 taper connector, a clamping portion is provided on the outer wall of the first sleeve, and the thickness of the clamping portion protruding from the outer wall of the first sleeve gradually increases along the insertion direction of the second sleeve; when the first sleeve and the second sleeve are in an inserted state, the clamping portion abuts against the inner wall of the second sleeve.

[0014] Preferably, a third connector is further connected to one end of the second connector away from the first connector;

[0015] One end of the second connector away from the first connector has a plurality of clamping posts distributed in a ring, and the inner wall end of the clamping post has a protrusion;

[0016] The third connector includes a third sleeve, and an embedding groove for embedding the protrusion is provided on the outer wall of the third sleeve.

[0017] Preferably, the clamping posts are coplanar with the inner wall surface of the fitting, and the outer wall surface of the third sleeve abuts against the inner wall surfaces of the fitting, the clamping posts and the first sleeve.

[0018] Preferably, at least one of the connectors is provided with a lug on the outer wall.

[0019] Preferably, a fourth sleeve is further provided at one end of the third connector away from the third sleeve, and the fourth sleeve is connected to an external connector.

[0020] Preferably, a convex block is provided on the inner wall of the fourth sleeve for connecting with an external screw connector;

[0021] Alternatively, the fourth sleeve is configured as a screw connector and is connected to an external connector having a convex block.

[0022] Preferably, the fourth sleeve is configured as a 1:40 taper connector for connecting with an external 1:40 taper connector.

[0023] Compared with the prior art, the advantages of the present utility model are:

[0024] (1) By providing a guiding member with a guiding surface on the inner wall of the connector, when the fitting is blindly inserted into the connector, it can move along the guiding surface and is finally limited between the outer walls of adjacent guiding members, avoiding misalignment and jamming during the insertion of the connector.

[0025] (2) Through the action of the guiding member and the limiting member, after the plug-in fitting is assembled, anti-rotation and axial limiting between the two connectors can be achieved. Combining with the cooperation of the positioning block and the positioning groove on the outer wall of the connector, anti-rotation is further realized to ensure the stability of the connection.

[0026] (3) By providing lugs on the outer wall of the connector, it is convenient to apply force better during the plugging and unplugging process of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the drawings and embodiments:

[0028] Figure 1 An exploded view of a replaceable breathing interface according to Embodiment 1 of the present invention;

[0029] Figure 2 An exploded view of the first connector and the second connector according to Embodiment 1 of the present invention;

[0030] Figure 3 A schematic structural view of the first connector according to Embodiment 1 of the present invention;

[0031] Figure 4 A schematic structural view of the second connector according to Embodiment 1 of the present invention;

[0032] Figure 5 A cross-sectional view of a replaceable breathing interface according to Embodiment 1 of the present invention along the distribution direction of a pair of limiting members;

[0033] Figure 6 An axonometric cross-sectional view of a replaceable breathing interface according to Embodiment 1 of the present invention along the distribution direction of a pair of limiting members;

[0034] Figure 7 A cross-sectional view of a replaceable breathing interface according to Embodiment 1 of the present invention along a direction perpendicular to the distribution direction of a pair of limiting members;

[0035] Figure 8 An exploded view of a replaceable breathing interface according to Embodiment 1 of the present invention;

[0036] Figure 9 An axonometric cross-sectional view of a replaceable breathing interface according to Embodiment 1 of the present invention along the distribution direction of a pair of limiting members;

[0037] Figure 10 A cross-sectional view of a replaceable breathing interface according to Embodiment 1 of the present invention along the distribution direction of a pair of limiting members;

[0038] Figure 11Structural schematic diagram of a breathing interface that is easy to replace according to Embodiment 2 of the present utility model;

[0039] Figure 12 Axonometric sectional view of a breathing interface that is easy to replace according to Embodiment 2 of the present utility model along the distribution direction of a pair of limiting members.

[0040] Wherein: 1. First joint;

[0041] 11. First sleeve, 12. Guide member, 13. Guide surface, 14. Limiting member, 15. Positioning block, 16. Clamping portion;

[0042] 2. Second joint;

[0043] 21. Insertion fitting, 211. Notch, 22. Second sleeve, 23. Positioning groove, 24. Clamping post, 25. Protrusion;

[0044] 3. Third joint;

[0045] 31. Third sleeve, 32. Embedded groove, 33. Fourth sleeve, 33a. 1:40 taper joint, 34. Convex block;

[0046] 4. Lobe. Detailed implementation manners

[0047] For the convenience of understanding, first, the application scenario of the present application is described. In medical devices, a ventilator and a breathing mask used at the patient end need to be connected in sequence through pipelines and interfaces. Each interface must cooperate efficiently to achieve stable and convenient connection. The present utility model discloses a breathing interface that is easy to replace, including at least two joints that are inserted and connected in sequence. There is a clamping portion between adjacent joints, and the adjacent joints are fixedly connected through the clamping portion.

[0048] The following further elaborates on the content of the present utility model in detail in combination with specific embodiments:

[0049] Embodiment 1

[0050] As Figure 1 shown, a breathing interface that is easy to replace includes a first joint 1, a second joint 2, and a third joint 3.

[0051] As Figure 2 , Figure 3As shown, the first joint 1 includes a first sleeve 11, with a positioning block 15 provided on the outer wall and a guiding member 12 and a limiting member 14 provided on the inner wall. Two guiding members 12 and two limiting members 14 are provided, and both are integrally formed with the first sleeve 11. The guiding member 12 has a guiding surface 13 that biases towards the insertion end side of the second joint 2, and the guiding surface 13 is inclined with respect to the axis of the first joint 1. The limiting member 14 is constructed on the inner wall of the first joint 1 and is located between the outer walls of the adjacent guiding members 12.

[0052] As Figure 4 shown, the second joint 2 includes a pair of plug-in fittings 21 and a second sleeve 22 provided on the outer peripheral side of the plug-in fittings 21. The second sleeve 22 is a 1:40 taper joint, with a positioning groove 23 provided at the end. In the assembled state, the positioning block 15 is embedded in the positioning groove 23. A notch 211 is provided on the outer wall of the plug-in fitting 21. The head side of the plug-in fitting 21 fits against the guiding surface 13 and enters the first joint 1, and the limiting member 14 is embedded in the notch 211.

[0053] Based on the structures of the first joint 1 and the second joint 2, the clamping portion for realizing the connection between the two includes the guiding member 12 and the limiting member 14 formed on the inner wall of the first joint 1, and the plug-in fitting 21 formed on the second joint 2. Among them, the plug-in fitting 21 is accommodated between the outer walls of the adjacent guiding members 12 to realize the rotational limit of the adjacent joints (the first joint 1 and the second joint 2) in the axial direction; the notch 211 is provided circumferentially along the plug-in fitting 21 and cooperates with the limiting member 14 to realize the axial limit of the adjacent joints (the first joint 1 and the second joint 2); regarding the circumferential direction, it can be understood that since the contour of the plug-in fitting 21 is arc-shaped, the circumferential direction is the circumferential direction of the circle. Since a mutually cooperating positioning groove 23 and positioning block 15 are also provided between the first joint 1 and the second joint 2, anti-rotation can be further realized to ensure the stability of the connection.

[0054] In this embodiment, two guiding members 12, two limiting members 14, and two plug-in fittings 21 are provided. In other embodiments, the number can also be set to more than two, but the numbers need to be the same to enable cooperation.

[0055] A lug 4 is provided on the outer wall of the second joint 2 to facilitate better force application during the insertion and removal of the joint.

[0056] During the assembly process, the head of the plug-in fitting 21 abuts against the guiding surface 13 and gradually enters the first sleeve 11 along the guiding surface 13 until the plug-in fitting 21 is limited between a pair of guiding members 12 and the limiting member 14 enters the notch 211; combined Figure 5 、 Figure 6 、 Figure 7As shown, in the assembled state, a pair of plug fittings 21 enter into the first sleeve 11, and each plug fitting 21 is respectively located between adjacent guiding members 12. The first sleeve 11 is accommodated between the second sleeve 22 and the plug fittings 21; as Figure 3 shown, there is also a clamping portion 16 on the outer wall of the first sleeve 11. The thickness of the clamping portion 16 protruding from the outer wall of the first sleeve 11 gradually increases along the insertion direction of the second sleeve. In the assembled state, the maximum thickness portion of the clamping portion 16 is in close contact with the inner wall of the second sleeve 22.

[0057] Regarding the cooperation between the first connector 1 and the second connector 2 above, by providing guiding members 12 with guiding surfaces 13 on the inner wall of the first connector 1, when the plug fittings 21 are blindly inserted into the first connector 1, they can move along the guiding surfaces 13 and are finally limited between the outer walls of adjacent guiding members 12, avoiding misalignment and jamming during the insertion of the connectors.

[0058] As Figure 1 、 Figure 8 shown, one end of the second connector 2 far from the first connector 1 is connected to the third connector 3; one end of the second connector 2 far from the first connector 1 has a plurality of clamping posts 24 distributed in a ring shape, and the inner wall end of the clamping posts 24 has protrusions 25; the third connector 3 includes a third sleeve 31, and there is an embedding groove 32 on the outer wall of the third sleeve 31 for the protrusions 25 to be embedded.

[0059] The clamping posts 24 are arranged coplanarly with the inner wall surface of the plug fittings 21. As Figure 9 、 Figure 10 shown, in the assembled state, the outer wall surface of the third sleeve 31 abuts against the inner wall surfaces of the plug fittings 21, the clamping posts 24, and the first sleeve 11.

[0060] In this embodiment, lugs 4 are provided on the outer walls of both the second connector 2 and the third connector 3, which are also used for better exerting force during the plugging and unplugging of the connectors.

[0061] Furthermore, as Figure 1 、 Figure 8 shown, one end of the third connector 3 far from the third sleeve 31 is further provided with a fourth sleeve 33. A convex block 34 is provided on the inner wall of the fourth sleeve 33 for connecting with an external screw joint. A spiral groove is provided on the outer wall of the screw joint. The convex block 34 is screwed into the spiral groove and is clamped with the end of the spiral groove, thereby realizing the clamping connection between the third connector 3 and the screw joint. Of course, in other embodiments, the fourth sleeve 33 can be directly constructed as a screw joint and connected to an external joint with a convex block.

[0062] Embodiment 2

[0063] As Figure 11 、 Figure 12As shown, a replaceable breathing interface includes a first connector 1, a second connector 2, and a third connector 3 that are sequentially inserted and connected.

[0064] In this embodiment, the first connector 1 and the second connector 2 are connected by a clamping portion; between the second connector 2 and the third connector 3, a clamping post 24 and a slot 32 are used for connection. At the end of the third connector 3 away from the third sleeve 31, a fourth sleeve 33 is further provided. The fourth sleeve 33 is configured as a 1:40 taper joint 33a for connecting with an external 1:40 taper joint. The 1:40 taper joint 33a is an international standard joint and is suitable for quickly establishing ventilation, and can be directly inserted and connected in the usage scenario.

[0065] In the application scenario, the first connector 1, the second connector 2, and the third connector 3 are sequentially connected along the gas path direction from the ventilator end to the patient end; the first connector 1 belongs to the connection end of the ventilator pipeline, and the third connector 3 can be used to connect with the pipeline of the breathing mask or with a filter, and then the other end of the filter is connected to the breathing mask.

[0066] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, obviously the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A breathing interface that is convenient to replace, characterized in that, It includes at least two mating connectors, with a clamping portion between adjacent connectors; The clamping portion includes a guide member (12) and a limiting member (14) formed on the inner wall of any connector, and a fitting member (21) formed on the other connector; the guide member (12) has a guide surface (13) biased towards the insertion end side of the connector, and the limiting member (14) is constructed at the inner wall of the connector; a notch (211) is provided on the outer wall of the fitting member (21), and the head side of the fitting member (21) fits against the guide surface (13) and enters the connector, and the limiting member (14) is embedded in the notch (211).

2. The replaceable breathing interface according to claim 1, characterized in that: At least two of the guide member (12), the limiting member (14) and the fitting member (21) are provided, and the numbers are the same; The limiting member (14) is formed between the outer walls of adjacent guide members (12), and the fitting member (21) is accommodated between the outer walls of adjacent guide members (12) to realize rotational limitation of adjacent connectors in the axial direction; The notch (211) is opened along the circumferential direction of the fitting member (21) and cooperates with the limiting member (14) to realize axial limitation of adjacent connectors.

3. The breathing interface according to claim 2, characterized in that: Between a pair of adjacent connectors, there also includes a positioning block (15) formed on any connector and a positioning groove (23) formed on the other connector, and the positioning block (15) is embedded in the positioning groove (23).

4. The replaceable breathing interface according to claim 3, characterized in that: It is assumed that the guide member (12) and the limiting member (14) are provided on the first connector (1), and the fitting member (21) is formed on the second connector (2); The first connector (1) includes a first sleeve (11), the positioning block (15) is constructed on the outer wall of the first sleeve (11), and the guide member (12) and the limiting member (14) are constructed on the inner wall of the first sleeve (11); The second connector (2) includes a second sleeve (22) provided on the outer peripheral side of the fitting member (21), the positioning groove (23) is constructed at the end of the second sleeve (22), and the first sleeve (11) is accommodated between the second sleeve (22) and the fitting member (21).

5. The breathing interface according to claim 4, which is characterized in that: The second sleeve (22) is constructed as a 1:40 taper joint, a clamping portion (16) is provided on the outer wall of the first sleeve (11), and the thickness of the clamping portion (16) protruding from the outer wall of the first sleeve (11) gradually increases along the insertion direction of the second sleeve (22); when the first sleeve (11) and the second sleeve (22) are in a mated state, the clamping portion (16) abuts against the inner wall of the second sleeve (22).

6. The breathing interface according to claim 4, which is characterized in that: One end of the second connector (2) far from the first connector (1) is also connected to a third connector (3); One end of the second connector (2) far from the first connector (1) has a plurality of clamping columns (24) distributed in a ring, and a protrusion (25) is provided at the inner wall end of the clamping column (24); The third connector (3) includes a third sleeve (31), and an embedding groove (32) for the protrusion (25) to be embedded is provided on the outer wall of the third sleeve (31).

7. The breathing interface according to claim 6, wherein: The card post (24) is arranged coplanarly with the inner wall surface of the plug-in fitting (21), and the outer wall surface of the third sleeve (31) abuts against the inner wall surfaces of the plug-in fitting (21), the card post (24), and the first sleeve (11).

8. A replaceable breathing interface according to any one of claims 1-7, characterized in that: At least one lug (4) is provided at the outer wall of the joint.

9. The breathing interface according to claim 6, characterized in that: A fourth sleeve (33) is further provided at one end of the third joint (3) away from the third sleeve (31), and the fourth sleeve (33) is connected to an external joint.

10. The replaceable breathing interface according to claim 9, wherein: A convex block is provided at the inner wall of the fourth sleeve (33) for connecting with an external screw joint; Alternatively, the fourth sleeve (33) is configured as a screw joint and is connected to an external joint having a convex block.

11. A replaceable breathing interface according to claim 9, characterized in that: The fourth sleeve (33) is configured as a 1:40 taper joint (33a) for connecting with an external 1:40 taper joint.

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