A needleless connector rubber cap

Abstract

The present invention relates to the field of medical consumables, and specifically to a needleless connector rubber cap. A needleless connector rubber cap includes a housing and a rubber body. There is a cavity between the rubber body and the housing. The rubber body includes a top connection part, a middle clamping shoulder part, and a bottom compression part. The center of the top connection part has a connection groove, and there are connection skirts on both sides of the connection groove. The outer diameter of the top connection part is equal to the inner diameter of the housing at the connection part, and the connection skirts are arranged on the top of the housing. The middle clamping shoulder part is provided with two clamping shoulders protruding outward away from the center line of the rubber body. When the rubber body is not compressed, the clamping shoulders are positioned on the housing. There are two compression grooves recessed towards the center line of the rubber body on the bottom compression part. When the two compression grooves are compressed to the maximum extent, the position of the top connection part is lower than the position where the middle clamping shoulder part is positioned on the housing. This kind of rubber cap can be more tightly connected to the needle, ensuring the smoothness of liquid outflow.

Description

Technical Field

[0001] The present invention relates to the field of medical consumables, and particularly to a rubber cap for a needleless connector. Background Art

[0002] Safe injection refers to an injection that is harmless to the recipient, does not expose the medical staff performing the injection operation to avoidable risks, and does not cause harm to others by the injection waste. It includes: 1. The injection staff wears sterile gloves for injection. 2. The injection site of the recipient is clean and disinfected. In recent years, with the innovation and development of technology, various needleless infusion connectors that focus on safe injection have emerged one after another. The needleless infusion connector has also experienced the early blunt needle design, complex mechanical valves to the current simple and transparent positive pressure needleless connector. The original intention of the needleless infusion connector design is to protect medical staff and reduce the risk of needlestick injuries. Most needleless connectors are provided with a rubber cap inside the outer shell. Most of the rubber caps are flat-headed designs. When in use, a hard needle is required to press the rubber cap to deform it, thereby opening the liquid passage. The top of the rubber cap in the prior art is mostly flat-headed design. When pressed by the pillow, it is easy to slip sideways, resulting in unstable liquid outflow. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a rubber cap for a needleless connector, which can be more tightly connected to the needle and ensure the smoothness of liquid outflow.

[0004] To solve the problems of the prior art, the present invention discloses a rubber cap for a needleless connector, which includes an outer shell and a rubber body. The rubber body is sleeved inside the outer shell. There is a cavity between the rubber body and the outer shell. The rubber body includes a top connecting part, a middle clamping shoulder part and a bottom compressing part. The center of the top connecting part has a connecting groove, and there are connecting skirts on both sides of the connecting groove. The outer diameter of the top connecting part is equal to the inner diameter of the connecting part of the shell. The connecting skirts are arranged on the top of the shell, and the outer diameter of the connecting skirts is greater than the outer diameter of other parts of the top connecting part. The middle clamping shoulder part is provided with two clamping shoulders protruding outward away from the center line of the rubber body. When the rubber body is not compressed, the clamping shoulders are clamped on the shell. On the bottom compressing part, there are two compressing grooves recessed towards the center line of the rubber body. The compressing grooves are semi-circular structures. When the two compressing grooves are compressed to the maximum extent, the position of the top connecting part is lower than the clamping position of the middle clamping shoulder part on the shell.

[0005] Preferably, there is a protective film on the upper part of the connecting groove of the top connecting part.

[0006] Preferably, the thickness of the connecting skirt is 1-3 mm.

[0007] Preferably, the connecting groove is located at the center of the top connecting part.

[0008] Preferably, the outer diameter of the shoulder is smaller than the inner diameter of the housing.

[0009] The beneficial effects of the present invention are as follows: The structure is simple and there are no redundant components. When pressure is applied to the top of the rubber body, the two compression grooves in the compression part at the bottom of the rubber body can be compressed together, minimizing the overall length of the rubber body. The connecting part at the top of the rubber body moves downward and away from the top of the housing to be sealed, entering the wide bottom of the housing, thus forming a smooth and complete liquid passage. The top of the rubber body has a connecting skirt, and the connecting skirt attached to the top of the housing can play a good sealing role. When the top of the rubber body is squeezed, the connecting skirt can be turned up and wrapped around the needle to prevent situations such as needle deviation. There is also a connecting groove at the top of the rubber body, which facilitates the placement of the needle therein and avoids the needle deviation that may occur due to the smooth surface of the rubber body with a flat surface. There is also a protective film on the top of the connecting groove, which is connected to the top of the rubber body, facilitating disinfection wiping and avoiding disinfection dead corners. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural view of the present invention;

[0011] Figure 2 is a schematic structural view of the swaddling band of the present invention.

[0012] Reference Signs:

[0013] 1, outer shell; 2, rubber body; 21, top connecting part; 22, middle shoulder part; 23, bottom compression part; 24, connecting groove; 25, connecting skirt; 26, shoulder; 27, compression groove; 28, protective film. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present invention will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the

[0015] A needleless connector rubber cap, comprising a housing 1 and a rubber body 2. The rubber body 2 is sleeved inside the housing 1, and there is a cavity between the rubber body 2 and the housing 1. The rubber body 2 includes a top connecting part 21, a middle clamping shoulder part 22 and a bottom compression part 23. There is a connecting groove 24 in the center of the top connecting part 21, and connecting skirts 25 are arranged on both sides of the connecting groove 24. The outer diameter of the top connecting part 21 is equal to the inner diameter of the housing at the connection part. The connecting skirts 25 are arranged on the top of the housing, and the outer diameter of the connecting skirts 25 is larger than the outer diameter of other parts at the top connection part. The middle clamping shoulder part 22 is provided with two shoulders 26 protruding outward away from the center line of the rubber body 2. When the rubber body 2 is not compressed, the shoulders 26 are clamped on the housing. There are two compression grooves 27 recessed towards the center line of the rubber body 2 on the bottom compression part 23. The compression grooves 27 are semi-circular structures. When the two compression grooves 27 are compressed to the maximum extent, the position of the top connecting part 21 is lower than the clamping position of the middle clamping shoulder part 22 on the housing.

[0016] There is a protective film 28 above the connecting groove 24 of the top connecting part 21.

[0017] The thickness of the connecting skirts 25 is 1 - 3 mm.

[0018] The connecting groove 24 is located in the center of the top connecting part 21.

[0019] The outer diameter of the shoulders 26 is smaller than the inner diameter of the housing.

[0020] The beneficial effects of the present invention are as follows: The structure is simple and there are no redundant parts. When pressure is applied to the top of the rubber body 2, the two compression grooves 27 of the bottom compression part 23 of the rubber body 2 can be compressed together, so that the overall length of the rubber body 2 is compressed to the lowest. The top connecting part 21 of the rubber body 2 moves downward and leaves the top of the housing to be sealed, and enters the wide bottom of the housing, thereby forming a smooth and complete liquid channel. The top of the rubber body 2 has connecting skirts 25. The connecting skirts 25 attached to the top of the housing can play a good sealing role. When the top of the rubber body 2 is squeezed, the connecting skirts 25 can be turned up and wrapped around the needle tip to avoid situations such as needle tip deviation. There is also a connecting groove 24 on the top of the rubber body 2. This connecting groove 24 is convenient for the needle tip to be placed therein, avoiding the situation of needle tip deviation that may be caused by the smooth surface of the rubber body 2 with a flat surface. There is also a protective film 28 on the top of the connecting groove 24. The protective film 28 is connected to the top of the rubber body 2, which is convenient for disinfection and wiping and avoids disinfection dead corners.

[0021] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A needleless connector rubber cap, comprising a housing and a rubber body, the rubber body is sleeved inside the housing, and there is a cavity between the rubber body and the housing, characterized in that: The rubber body includes a top connection part, a middle clamping shoulder part, and a bottom compression part. The center of the top connection part has a connection groove, and connection skirts are provided on both sides of the connection groove. The outer diameter of the top connection part is equal to the inner diameter of the housing at the connection part. The connection skirts are arranged on the top of the housing, and the outer diameter of the connection skirts is greater than the outer diameter of other parts at the top connection part; the middle clamping shoulder part is provided with two clamping shoulders protruding outward away from the center line of the rubber body. When the rubber body is not compressed, the clamping shoulders are clamped on the housing; two compression grooves recessed towards the center line of the rubber body are provided on the bottom compression part. The compression grooves are semi-circular structures. When the two compression grooves are compressed to the maximum extent, the position of the top connection part is lower than the clamping position of the middle clamping shoulder part on the housing; the outer diameter of the clamping shoulders is smaller than the inner diameter of the housing.

2. The needleless connector rubber cap according to claim 1, characterized in that: A protective film (28) is provided above the connection groove of the top connection part.

3. The needleless connector rubber cap according to claim 2, characterized in that: The thickness of the connection skirt is 1-3 mm.

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