Infusion set puncture connector

Abstract

This invention discloses an infusion set puncture connector, comprising a base and a puncture head. The connector features an air inlet channel and a fluid outlet channel. The air inlet channel is equipped with a one-way air inlet assembly, with the air inlet located on the base and the air outlet on the puncture head. The fluid outlet channel includes an inlet section, a storage chamber, and an outlet section. The inlet of the inlet section is located on the puncture head, and the outlet communicates with the storage chamber. The inlet of the outlet section communicates with the storage chamber, and the outlet is located on the base. This invention provides an air filtration function to remove air from the medication entering the catheter, facilitating recycling and improving the stability of the connection with the medicine bottle cap.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically to an infusion set puncture connector. Background Technology

[0002] An infusion set is a device used to deliver intravenous medication to a patient. Currently, an infusion set typically consists of an intravenous needle, a protective cap, an infusion tubing, a medication filter, a flow regulator, a drip chamber, a precision filter, a stopper puncturist, and an air filter connected to the inlet tube. During operation, under atmospheric pressure, the liquid in the bottle flows through the thinner infusion tubing into the drip chamber. When the water column pressure in the drip chamber exceeds the venous pressure, the liquid in the bottle flows through the tubing into the vein.

[0003] In the existing technology, the infusion set stopper puncture device does not have an air filtration function, which causes the medicine entering the infusion set tubing to be mixed with air, and this air can easily enter the human body along with the medicine. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an infusion set puncture connector with an air filtration function to remove air from the medication entering the catheter.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A puncture connector for an infusion set, comprising a base and a puncture head, characterized in that: the puncture connector has an air inlet channel and an outlet channel inside;

[0007] The air intake channel is equipped with a one-way air intake component, and the air intake port of the air intake channel is located on the base, while the air outlet is located on the puncture head.

[0008] The liquid outlet channel includes an inlet section, a storage chamber, and an outlet section; the inlet of the inlet section is located on the puncture head, and the outlet is connected to the storage chamber; the inlet of the outlet section is connected to the storage chamber, and the outlet is located on the base.

[0009] Preferably, the base includes a housing and a cover disposed on the housing, and the puncture head includes a needle hub and a puncture needle;

[0010] The lower end of the needle hub is formed on the cover, and the liquid inlet of the liquid inlet section is opened on the side wall of the needle hub.

[0011] The lower end of the puncture needle is fixed inside the housing, the upper end passes through the needle seat and is located outside the needle seat, and the air outlet of the air inlet channel is located at the upper end of the puncture needle and above the liquid inlet of the liquid inlet section.

[0012] Preferably, the inlet section is formed by isolating the inner wall of the needle hub from the outer wall of the puncture needle.

[0013] Preferably, the housing has a liquid storage tank, and the liquid storage cavity is formed by a cover covering the opening of the liquid storage tank.

[0014] Preferably, the liquid outlet section is a liquid outlet pipe disposed inside the housing, and a filter cover is disposed on the liquid inlet of the liquid outlet section.

[0015] Preferably, the air intake channel includes a needle hole of a puncture needle and an air intake cavity formed in the housing; the lower end of the puncture needle communicates with the air intake cavity, and the one-way air intake assembly is located in the air intake cavity.

[0016] Preferably, the bottom wall of the liquid storage cavity has a positioning tube, and the lower end of the puncture needle is inserted into the positioning tube and bonded together with glue.

[0017] Preferably, the upper opening of the positioning tube has a trumpet-shaped structure.

[0018] Preferably, the cover, shell, and one-way air intake assembly are all made of PVC material.

[0019] Preferably, the diameter of the puncture head gradually increases from top to bottom.

[0020] The advantages of this invention are:

[0021] 1. When the liquid is discharged from the outlet channel, the liquid enters the storage chamber through the inlet section. The liquid in the storage chamber is then fed into the outlet section and the outlet conduit. When the liquid passes through the storage chamber, the storage chamber can store and transfer the liquid, so that the air in the liquid is trapped in the storage chamber. This effectively filters the air from the liquid and prevents the liquid from carrying air out of the puncture joint.

[0022] 2. The separate design of the air inlet channel and the liquid outlet channel, as well as the one-way air inlet component in the air inlet channel, can maintain pressure differential balance, significantly improve the liquid outlet effect, and prevent the liquid from leaking out through the air inlet channel. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the infusion set puncture connector provided in this embodiment;

[0024] Figure 2 This is an overall schematic diagram provided for this embodiment. Detailed Implementation

[0025] Combination Figures 1 to 2 The infusion set puncture connector of the present invention will be further described.

[0026] An infusion set puncture connector includes a base 1 and a puncture head 2, characterized in that: the puncture connector has an air inlet channel and an outlet channel inside.

[0027] The air intake channel is equipped with a one-way air intake component 5, and the air intake port of the air intake channel is located on the lower side of the base 1, while the air outlet 43 is located on the puncture head 2.

[0028] The liquid outlet channel includes an inlet section 31, a storage chamber 32, and an outlet section 33; the inlet 311 of the inlet section 31 is located on the puncture head 2, and the outlet 312 is connected to the storage chamber 32; the inlet 331 of the outlet section 33 is connected to the storage chamber 32, and the outlet 332 is located on the base 1.

[0029] In use, the invention is inserted into a medicine bottle or medicine bag via the puncture head 2. An air inlet pipe is connected to the air inlet channel, and an outlet conduit is connected to the outlet section 33. When the medicine is discharged outward through the outlet channel, the medicine enters the storage chamber 32 through the inlet section 31. The medicine in the storage chamber 32 flows into the outlet section 33 and the outlet conduit. As the medicine passes through the storage chamber 32, the storage chamber 32 can store and transfer the medicine, so that the air in the medicine is trapped in the storage chamber 32, which has the effect of filtering air from the medicine and effectively prevents the medicine from carrying air out of the puncture head.

[0030] The separate design of the air inlet channel and the liquid outlet channel, along with the one-way air inlet component 5 within the air inlet channel, can maintain pressure differential balance, significantly improve the liquid outlet effect, and prevent the liquid from leaking out through the air inlet channel.

[0031] This embodiment is further configured as follows: the base 1 includes a housing 12 and a cover 11 covering the housing; the puncture head 2 includes a needle seat 21 and a puncture needle 22; the lower end of the needle seat 21 is formed on the central opening of the cover 11; the inlet 311 of the liquid inlet section 31 is opened on the side wall of the needle seat 21; the lower end of the puncture needle 22 is fixed inside the housing 12, the upper end passes through the needle seat 21 and is located outside the needle seat; and the outlet 43 of the air inlet channel is opened at the upper end of the puncture needle 22 and is located above the inlet of the liquid inlet section 31. This structure facilitates the production and assembly of the present invention; the outlet 43 of the air inlet channel is higher than the inlet 311 of the liquid outlet channel. This structural configuration allows the height of air entering the medicine bottle to be higher than the height of the medicine flowing out, significantly reducing the possibility of air directly entering the inlet of the liquid outlet channel during its ascent, or air mixed with the medicine entering the inlet 311 of the liquid outlet channel along with the medicine. After the cover 11 is placed on the housing 12, it is fixed and sealed by glue or by a sealing ring.

[0032] In this embodiment, the liquid inlet section 31 is further configured such that it is formed by isolating the inner wall of the needle hub 21 from the outer wall of the puncture needle 22, i.e., the gap between the needle hub and the puncture needle. This configuration is simple in structure, easy to set up in production, and facilitates the outflow of liquid from the vial.

[0033] This embodiment is further configured such that: the housing 12 has a liquid storage tank 121, and the liquid storage cavity 32 is formed by a cover 11 covering the opening of the liquid storage tank 121. With this structure, the liquid inlet section 31 and the liquid storage cavity 32 are vertically connected, allowing the liquid inlet section 31 to directly enter the liquid storage cavity 32 for air filtration.

[0034] This embodiment is further configured such that: the outlet section 33 is an outlet pipe formed within the housing 12, and a filter cover 9 is provided on the inlet 331 of the outlet section 33. The bottom of the filter cover 9 has multiple circumferentially arranged columns 91, and a filter opening 92 is formed between each pair of adjacent columns. The filter cover is fixed to the inlet 331 by the bottom columns, and the medicine enters the outlet section 22 through the filter opening. The filter cover 9 can filter the medicine entering the outlet section to remove fruit particles of 0.6n from the medicine, thus playing a role in safe infusion and preventing the puncture head 2 from being inserted into the infusion bottle or infusion bag before infusion, which may bring out the bottle stopper and cut into the outlet tube, thus preventing disputes between patients and their families who see foreign objects and medical staff.

[0035] This embodiment is further configured such that: the air intake channel includes a needle hole 41 of the puncture needle 22 and an air intake chamber 42 formed within the housing 12, the air intake chamber 42 being located below the liquid storage tank 121; the lower end of the puncture needle 22 communicates with the air intake chamber 42, and the one-way air intake component 5 is located within the air intake chamber 42. With this structure, air enters the medicine bottle through the air intake chamber 42 and the needle hole 41, achieving the function of one-way air intake.

[0036] The one-way air intake assembly 5 includes a valve body 51 and a floating ball 52 disposed within the valve body 51; another structural configuration of the one-way air intake assembly 5 includes a valve body 51 and a floating plate disposed on the air outlet of the valve body 51. In this embodiment, a filter plate 6 is disposed on the air inlet of the valve body 51, and the valve body 51 and the filter plate 6 are secured within the air intake chamber 42 by a retaining ring 7.

[0037] This embodiment is further configured such that: a positioning tube 8 is provided on the bottom wall of the liquid storage chamber 32, the lower opening of the positioning tube 8 is connected to the air inlet chamber 42, and the lower end of the puncture needle 22 is inserted into the positioning tube 8 and bonded together with glue. This structure achieves the fixation of the puncture needle 22 and the connection between the needle hole 41 of the puncture needle 22 and the air inlet chamber 42.

[0038] This embodiment is further configured such that the upper opening of the positioning tube 8 has a trumpet-shaped structure. This configuration facilitates the application of adhesive between the outer wall of the puncture needle 22 and the inner wall of the positioning tube 8.

[0039] In this embodiment, the cover 11, the shell 12, and the one-way air intake assembly are all made of PVC material. With this structure, after the puncture needle 22 is removed using the automatic needle removal device, the remaining components are all made of PVC material, facilitating recycling. Furthermore, PVC is a transparent material, making it easy to observe.

[0040] In this embodiment, the diameter of the puncture head 2 gradually increases from top to bottom. This structure allows the puncture head 2 to lock more tightly into the bottle cap when inserted, reducing the risk of the puncture head 2 accidentally falling out.

[0041] Unless otherwise specified, in this invention, terms such as "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0042] Unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" in this invention should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An infusion set puncture connector, comprising a base and a puncture head, characterized in that: The puncture connector has an air inlet channel and a liquid outlet channel inside; The air intake channel is equipped with a one-way air intake component, and the air intake port of the air intake channel is located on the base, while the air outlet is located on the puncture head. The liquid outlet channel includes an inlet section, a storage chamber, and an outlet section; the inlet of the inlet section is located on the puncture head, and the outlet is connected to the storage chamber; the inlet of the outlet section is connected to the storage chamber, and the outlet is located on the base. The base includes a housing and a cover on the housing, and the puncture head includes a needle hub and a puncture needle; The lower end of the needle hub is formed on the cover, and the liquid inlet of the liquid inlet section is opened on the side wall of the needle hub. The lower end of the puncture needle is fixed inside the housing, the upper end passes through the needle seat and is located outside the needle seat, and the air outlet of the air inlet channel is located at the upper end of the puncture needle and above the liquid inlet of the liquid inlet section. The liquid outlet section is a liquid outlet pipe installed inside the housing, and a filter cover is installed on the liquid inlet of the liquid outlet section. The bottom of the filter cover has multiple columns arranged in a circle, and a filter port is formed between each two adjacent columns. The filter cover is fixed to the liquid inlet by the bottom columns, and the medicine enters the liquid outlet section through the filter port.

2. The infusion set puncture connector according to claim 1, characterized in that: The inlet section is formed by separating the inner wall of the needle hub from the outer wall of the puncture needle.

3. The infusion set puncture connector according to claim 1, characterized in that: The housing has a liquid storage tank, and the liquid storage cavity is formed by a cover covering the opening of the liquid storage tank.

4. The infusion set puncture connector according to claim 1, characterized in that: The air intake channel includes a needle hole for the puncture needle and an air intake cavity formed within the housing; the lower end of the puncture needle communicates with the air intake cavity, and the one-way air intake assembly is located within the air intake cavity.

5. The infusion set puncture connector according to claim 1, characterized in that: The bottom wall of the liquid storage chamber has a positioning tube, and the lower end of the puncture needle is inserted into the positioning tube and bonded together with glue.

6. The infusion set puncture connector according to claim 5, characterized in that: The upper opening of the positioning tube has a trumpet-shaped structure.

7. The infusion set puncture connector according to claim 2, characterized in that: The cover, shell, and one-way air intake assembly are all made of PVC material.

8. The infusion set puncture connector according to claim 1, characterized in that: The diameter of the puncture head gradually increases from top to bottom.

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