Transfusion connector capable of achieving puncture filtering structure

Abstract

The utility model discloses an infusion connector capable of realizing a puncture filtering structure, which comprises a puncture part, a columnar cavity is connected with the root of the puncture part, an expanded inner cavity is formed in the columnar cavity, a filtering part is arranged in the columnar cavity, a connecting part is arranged at one end of the columnar cavity far away from the puncture part, the puncture part is provided with an overflowing hole along the axial direction, and the overflowing hole is communicated with the filtering part. One end of the overflowing hole is located in the tip of the puncture part, and the other end of the overflowing hole is communicated into the columnar cavity. According to the infusion connector capable of achieving the puncture filtering structure, the filtering structure is arranged at an infusion bottle, and the inconvenience influence caused by the fact that the filtering structure is arranged on the hand of an infusion person during infusion is avoided; when the device is inserted into the insertion cavity, surrounding type sealing can be formed on the connection portion of the device and the insertion cavity, so that dust and other impurities can be prevented from entering, and sterile connection is guaranteed. And the device can be firmly connected with the infusion bottle through the anti-falling structure.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an infusion connector capable of realizing a puncture filtering structure. Background Art

[0002] In intravenous infusion medical situations, infusion connectors are generally used to connect infusion needles and infusion bottles, and do not have a filtering function. Due to processing issues, the liquid often contains some debris, which can easily cause new symptoms when entering the body. In order to prevent large particles of medicine or debris generated by puncture from being injected into the body during infusion, the prior art often uses a filter to filter the medicine near the terminal position of the infusion tube. For example, the prior art application number: CN201720120494.6 discloses a terminal filtering infusion connector, including a terminal filter, one end of the terminal filter is provided with a first interface connected to the infusion tube, and the other end of the terminal filter is provided with a second interface connected to the needle; the terminal filter includes a shell, and a guide plate is provided at the first interface in the shell; a filter assembly is provided between the guide plate and the second interface; an exhaust cap assembly is provided on the top surface of the second interface, and the exhaust cap assembly includes an exhaust pipe arranged on the surface of the second interface, an exhaust cap closing the exhaust outlet of the exhaust pipe, and a connecting belt connecting the exhaust pipe and the exhaust cap, and the maximum elongation of the connecting belt is always less than the length required for the exhaust cap to detach from the exhaust pipe.

[0003] The filter at the end of the infusion tube is large in size and has increased mass. It is not easy to fix near the injection needle at the end of the infusion tube. The large weight can easily cause the needle to move, affecting the infusion. If a small volume structure is used, it will not only affect the filtration flow, but also the filter membrane will be easily blocked by a small amount of impurities. Secondly, when the infusion recipient moves his hand, the large volume can be easily scratched by other objects. If he is not careful, the injection needle may even be pulled out, causing injury to the infusion recipient.

[0004] In view of the above, it is necessary to propose an infusion connector that can realize a puncture and filtering structure to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above technical problems and to provide an infusion connector capable of realizing a puncture and filtering structure.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an infusion connector that can realize a puncture and filtering structure, comprising a puncture portion, a columnar chamber connected to the root of the puncture portion, an enlarged inner cavity formed in the columnar chamber, a filtering portion provided in the columnar chamber, and a connecting portion provided at one end of the columnar chamber away from the puncture portion, the puncture portion is axially provided with a flow hole, one end of the flow hole is located at the tip of the puncture portion, and the other end is connected to the columnar chamber.

[0007] Furthermore, the filter portion includes a filter membrane, which is located at the top of the columnar chamber and is arranged close to the puncture portion, and a containing chamber is formed between the lower side of the filter membrane and the connecting portion.

[0008] Furthermore, the connecting part includes a puncture plug, which seals the opening at the lower end of the columnar chamber. The puncture plug is used to puncture through and enter the interior of the columnar chamber and form a seal for the puncture needle; a pull ring cover is provided on the outer side of the puncture plug.

[0009] Furthermore, the puncture plug is made of rubber or silicone material, and the pull ring cover is made of plastic material.

[0010] Furthermore, it also includes an anti-slip structure, which includes a sleeve portion and an anti-slip block. The sleeve portion is molded at the outlet end of the injection bottle, and the anti-slip block is arranged outside the columnar chamber. When the infusion connector is connected to the injection bottle, the anti-slip block forms a snap fit with the sleeve portion.

[0011] Furthermore, the anti-dropping block protrudes radially at the outer end of the upper edge of the columnar chamber to form a cylindrical protrusion.

[0012] Furthermore, the sleeve portion has an insertion cavity for inserting a columnar chamber from an open end, and when the columnar chamber is inserted into the insertion cavity, the insertion cavity forms a relatively closed space; the inner wall of the insertion cavity has a guide structure that cooperates with an anti-dropout block, and the side wall of the sleeve portion is radially provided with an opening, and the opening allows the anti-dropout block to enter the guide structure.

[0013] Furthermore, the guide structure is a Z-shaped track formed by the recessed inner wall of the insertion cavity, and the guide structure includes a first horizontal rail, a second horizontal rail, and a vertical rail. The first horizontal rail is connected to the lower end of the vertical rail, and the second horizontal rail is connected to the upper end of the vertical rail. The end of the first horizontal rail extends to the side of the opening.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is an infusion connector capable of realizing a puncture filtering structure, in which the filtering structure is arranged at the infusion bottle, thereby avoiding the inconvenience caused by the arrangement on the hands of the infusion recipient during infusion; when the device is inserted into the insertion cavity, an enveloping seal can be formed on the connection portion between the two, thereby preventing dust and other impurities from entering the connection and ensuring a sterile connection; the anti-detachment structure can enable the device to form a firm connection with the infusion bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an isometric view of an infusion connector capable of realizing a puncture and filtering structure according to the utility model;

[0016] Figure 2 This is a front view of an infusion connector capable of realizing a puncture and filtering structure according to the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of an infusion connector capable of realizing a puncture and filtering structure according to the utility model;

[0018] Figure 4 This is a top view of an infusion connector capable of realizing a puncture and filtering structure according to the utility model;

[0019] Figure 5 This is a bottom view of an infusion connector capable of realizing a puncture and filtering structure according to the utility model;

[0020] Figure 6 This is a schematic diagram of the puncture portion structure of an infusion connector capable of realizing a puncture and filtering structure according to the utility model;

[0021] In the figure: 1. puncture part; 2. columnar chamber; 3. filter part; 4. connection part; 5. flow hole; 6. filter membrane; 7. accommodating chamber; 8. puncture plug; 9. pull ring cover; 10. sleeve part; 11. anti-drop block; 12. injection bottle; 13. insertion cavity; 14. opening; 15. guide structure; 16. first horizontal rail; 17. second horizontal rail; 18. vertical rail; 19. boat-shaped joint; 20. isolation membrane. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] An infusion connector capable of realizing a puncture filtering structure, such as Figure 1-6 As shown, it includes a puncture part 1, which is the same as that in the prior art. Figure 6As shown, the structure of the puncture needle is shown. A flow hole 5 is axially arranged inside the puncture needle. One end of the flow hole 5 is located at the tip of the puncture part 1, and the other end is connected to the columnar chamber 2. When the puncture part 1 is inserted into the injection bottle, drainage can be performed to allow the liquid medicine to enter the columnar chamber 2. The root of the puncture part 1 is connected to the columnar chamber 2. In the accommodating chamber 7 in the columnar chamber 2, the infusion connector can form a transfer effect. By using an ordinary infusion tube without a filtering structure, the puncture needle at its end is inserted into the columnar chamber 2. The needle of the infusion tube can be retained in the oversized inner cavity in the columnar chamber 2. The columnar chamber 2 is provided with a connecting part 4 at one end away from the puncture part 1.

[0024] Specifically, Figure 3 As shown, the connecting portion 4 includes a puncture plug 8, which seals the opening 14 at the lower end of the columnar chamber 2. The puncture plug 8 is used to puncture and enter the interior of the columnar chamber 2 and form a seal for the puncture needle; a pull ring cover 9 is provided on the outer side of the puncture plug 8. When in use, the pull ring cover 9 is opened to expose the puncture plug 8, and then the puncture needle of the infusion tube can be inserted into the puncture plug 8, thereby forming a structure connected to the injection bottle 12.

[0025] Furthermore, the puncture plug 8 is made of rubber or silicone material, and the pull ring cover 9 is made of plastic material.

[0026] like Figure 3 As shown, a filter portion 3 is provided in the columnar chamber 2. Specifically, the filter portion 3 includes a filter membrane 6. The filter membrane 6 is located at the top of the columnar chamber 2, and the filter membrane 6 is arranged close to the puncture portion 1. A receiving chamber 7 is formed between the lower side of the filter membrane 6 and the connecting portion 4. When in use, when the infusion structure is inserted into the injection bottle 12, the medicine enters the filter portion 3 through the puncture portion 1, and the filter membrane 6 filters the medicine. Then the medicine enters the receiving chamber 7 and finally enters the infusion tube. Figure 3 As shown, the injection bottle 12 is similar to the prior art, and is provided with a boat-shaped joint 19 at its lower end. The lower part of the boat-shaped joint 19 is the insertion end for the infusion connector, and a puncture plug 8 is also provided in the insertion end. A layer of isolation membrane 20 is provided inside the puncture plug 8, and the isolation membrane 20 is used to separate the contact between the puncture plug 8 made of rubber material and the medicine.

[0027] Furthermore, an anti-slip structure is also included. In order to increase the connection strength, the anti-slip structure includes a sleeve portion 10 and an anti-slip block 11. Figure 1 , 2 As shown, the sleeve portion 10 is formed at the outlet end of the injection bottle 12, and the anti-detachment block 11 is arranged outside the columnar chamber 2. When the infusion connector is connected to the injection bottle 12, the anti-detachment block 11 and the sleeve portion 10 form a snap fit.

[0028] Specifically, the anti-dropping block 11 is radially raised at the outer end of the upper edge of the columnar chamber 2 to form a cylindrical protrusion. The sleeve portion 10 has an insertion cavity 13 for the columnar chamber 2 to be inserted from the open end. When the columnar chamber 2 is inserted into the insertion cavity 13, the insertion cavity 13 forms a relatively closed space. After the infusion connector is inserted into the insertion cavity 13, a relatively isolated environment can be formed in the insertion cavity 13, thereby maintaining an internal sterile environment; the inner wall of the insertion cavity 13 has a guide structure 15 that cooperates with the anti-dropping block 11, and the side wall of the sleeve portion 10 is provided with an opening 14 in the radial direction, and the opening 14 allows the anti-dropping block 11 to enter the guide structure 15.

[0029] Specifically, the guide structure 15 is a Z-shaped track formed by the inner wall of the insertion cavity 13 being recessed, and the guide structure 15 includes a first horizontal track 16, a second horizontal track 17, and a vertical track 18. The first horizontal track 16 is connected to the lower end of the vertical track 18, and the second horizontal track 17 is connected to the upper end of the vertical track 18. The end of the first horizontal track 16 extends to the side of the opening 14. It can be understood that in order to facilitate the display of the specific structure of the guide structure, the guide structure in the drawings is shown on the surface of the sleeve part. In actual production, the guide structure can be designed to be transparent and visible, which can not only maintain the sealing effect in the insertion cavity, but also facilitate observation. When in use, align the anti-dropping block 11 with the opening 14 and insert it into the sleeve part 10. At the end of the opening 14, the anti-dropping block 11 enters the first horizontal rail 16. Then, twist the columnar chamber 2 to make the anti-dropping block 11 enter the vertical track 18. Then, push along the vertical track 18 to insert the puncture part 1 into the injection bottle 12. When the anti-dropping block 11 moves to the end of the vertical track 18, twist the columnar chamber 2 again to make the anti-dropping block 11 enter the second horizontal rail 17. Then, the effect of fixing and preventing it from being pulled off can be achieved.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An infusion connector capable of realizing a puncture and filtration structure, comprising a puncture portion (1), characterized in that: A columnar chamber (2) is connected to the root of the puncture portion (1), an enlarged inner cavity is formed in the columnar chamber (2), a filter portion (3) is provided in the columnar chamber (2), and a connecting portion (4) is provided at one end of the columnar chamber (2) away from the puncture portion (1), and a flow hole (5) is axially provided on the puncture portion (1), one end of the flow hole (5) is located at the tip of the puncture portion (1), and the other end is connected to the columnar chamber (2).

2. The infusion connector capable of realizing a puncture and filtering structure according to claim 1, characterized in that: The filter portion (3) comprises a filter membrane (6), the filter membrane (6) being located at the top of the columnar chamber (2), and the filter membrane (6) being arranged close to the puncture portion (1), and a receiving chamber (7) being formed between the lower side of the filter membrane (6) and the connecting portion (4).

3. The infusion connector capable of realizing a puncture and filtering structure according to claim 1, characterized in that: The connecting portion (4) comprises a puncture rubber plug (8), which seals the opening (14) at the lower end of the columnar chamber (2). The puncture rubber plug (8) is used to puncture through and enter the interior of the columnar chamber (2) and form a seal for the puncture needle; a pull ring cover (9) is provided on the outer side of the puncture rubber plug (8).

4. The infusion connector capable of realizing a puncture and filtering structure according to claim 3, characterized in that: The puncture rubber plug (8) is made of rubber or silicone material, and the pull ring cover (9) is made of plastic material.

5. The infusion connector capable of realizing a puncture and filtering structure according to claim 1, characterized in that: The invention also comprises an anti-slip structure, the anti-slip structure comprising a sleeve portion (10) and an anti-slip block (11), the sleeve portion (10) being formed at the outlet end of the injection bottle (12), the anti-slip block (11) being arranged outside the columnar chamber (2), and when the infusion connector is connected to the injection bottle (12), the anti-slip block (11) and the sleeve portion (10) form a snap fit.

6. The infusion connector capable of realizing a puncture and filtering structure according to claim 5, characterized in that: The anti-dropping block (11) protrudes radially at the outer end of the upper edge of the columnar chamber (2) to form a cylindrical protrusion.

7. An infusion connector capable of realizing a puncture and filtering structure according to claim 5 or 6, characterized in that: The sleeve portion (10) has an insertion cavity (13) for the columnar chamber (2) to be inserted from the open end, and when the columnar chamber (2) is inserted into the insertion cavity (13), the insertion cavity (13) forms a relatively closed space; the inner wall of the insertion cavity (13) has a guide structure (15) that matches the anti-dropping block (11); the side wall of the sleeve portion (10) is provided with an opening (14) in the radial direction, and the opening (14) allows the anti-dropping block (11) to enter the guide structure (15).

8. The infusion connector capable of realizing a puncture and filtering structure according to claim 7, characterized in that: The guide structure (15) is a Z-shaped track formed by a depression in the inner wall of the insertion cavity (13), and the guide structure (15) comprises a first horizontal track (16), a second horizontal track (17), and a vertical track (18), wherein the first horizontal track (16) is connected to the lower end of the vertical track (18), the second horizontal track (17) is connected to the upper end of the vertical track (18), and the end of the first horizontal track (16) extends to the side of the opening (14).

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