Blood transfusion apparatus connector structure with backflow stopping structure

Abstract

The utility model discloses a blood transfusion apparatus connector structure with a backflow stopping structure, which belongs to the technical field of blood transfusion apparatuses and comprises a connector structure main body, the connector structure main body comprises a first connector and a second connector, a first connecting pipe is fixedly mounted on the outer surface of the first connector, and a second connecting pipe is fixedly mounted on the outer surface of the second connector. A first connecting pipe is fixedly installed on the outer surface of the first connector, a second connecting pipe is fixedly installed on the outer surface of the second connector, the first connecting pipe and the second connecting pipe are used in cooperation, two rotating shafts are rotatably installed on the inner wall of the first connecting pipe, backflow preventing plates are fixedly installed on the outer surfaces of the rotating shafts, and a blocking ring is fixedly installed on the inner wall of the first connector. The anti-backflow plate is arranged to be matched with the rotating shaft for use, the anti-backflow plate can be opened under the blood conveying effect during blood transfusion, the anti-backflow plate can be reversely rotated to be closed when blood return occurs, the effective anti-backflow effect is achieved, a good anti-backflow effect is achieved, meanwhile, the first connecting pipe and the second connecting pipe are matched for use, threaded connection and tight occlusion are achieved, and the anti-backflow effect is good. And loosening and falling cannot easily occur.

Description

Technical Field

[0001] The utility model belongs to the technical field of blood transfusion apparatuses, and in particular relates to a blood transfusion apparatus connector structure with a backflow prevention structure. Background Art

[0002] A blood transfusion set is an infusion device that establishes a pathway between blood and veins. It consists of a bottle insertion needle, an air inlet needle or air inlet hole, a needle cap, a Y-type three-way pipeline, a dropper, a pipeline, a dosing port flow regulator, an injection piece, and an intravenous needle or injection needle above No. 7. The blood transfusion set is used for patients who need blood transfusion in emergency situations.

[0003] The needles on existing blood transfusion devices are designed to be directly plugged in and out of the pipeline bracket. Although this operation method is convenient for plugging and unplugging, it is easy to loosen and fall off, and there is a certain degree of instability in use. In addition, there is no structure to prevent backflow at the joint when blood backflow occurs, and the function is not perfect. Utility Model Content

[0004] The utility model aims to provide a blood transfusion set connector structure with a backflow prevention structure, so as to solve the problem that the needles on the existing blood transfusion sets and the pipeline brackets are directly plugged in and out, which is convenient for plugging and unplugging, but is prone to loosening and falling off, and has certain instability in use. In addition, when blood backflow occurs, there is no backflow prevention structure at the connector, and the function is not perfect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blood transfusion device connector structure with a backflow prevention structure, comprising a connector structure main body, the connector structure main body comprising a first connector and a second connector, the outer surface of the first connector is fixedly mounted with a connecting tube 1, the outer surface of the second connector is fixedly mounted with a connecting tube 2, the connecting tube 1 and the connecting tube 2 are used in conjunction with each other, the inner wall of the connecting tube 1 is rotatably mounted with two rotating shafts, the outer surface of the rotating shaft is fixedly mounted with an anti-backflow plate, the inner wall of the first connector is fixedly mounted with a blocking ring, the blocking ring is fittedly arranged on the side of the anti-backflow plate, and the inner wall of the second connector is provided with a blood filter.

[0006] By adopting the above scheme, by setting up an anti-backflow plate for use with the rotating shaft, the anti-backflow plate will open under the action of blood delivery during blood transfusion, and when blood backflow occurs, the anti-backflow plate will rotate in the opposite direction and close, thereby achieving an effective backflow prevention effect, thereby playing a good role in preventing backflow. At the same time, connecting tube one and connecting tube two are used in combination, and the threaded connection is tightly engaged and not easy to loosen or fall off. By setting up a blood filter for use in combination, the delivered blood can be filtered. At the same time, the blood filter can be effectively pressed and held by using the first pressure ring and the second pressure ring in combination with the guide column to ensure stability and avoid shaking.

[0007] As a preferred embodiment, the inner wall of the connecting pipe 1 has an internal thread, and the outer surface of the connecting pipe 2 has an external thread, and the internal thread and the external thread are used in combination.

[0008] By adopting the above scheme, the external thread and the internal thread are used together, which facilitates the connection and assembly of the connecting pipe 1 and the connecting pipe 2, and the threaded connection is tightly engaged and not easy to loosen.

[0009] As a preferred embodiment, an embedded groove is formed at the opposite ends of the first connector and the second connector, and a sealing ring is embedded in the embedded groove, and the two sealing rings are arranged in close contact with each other.

[0010] By adopting the above solution, the embedded groove is used in conjunction with the sealing ring to ensure good sealing properties and avoid overflow.

[0011] As a preferred embodiment, two arc-shaped rods are fixed on the side of the blocking ring, the backflow prevention plate is slidably mounted on the outer surface of the arc-shaped rod, and a blocking block is fixedly mounted on one end of the arc-shaped rod away from the blocking ring.

[0012] By adopting the above solution, the arc rod is used in conjunction with the blocking block to limit the rotation of the backflow prevention plate.

[0013] As a preferred implementation, a spring is sleeved outside the arc-shaped rod, and two ends of the spring are fixedly connected to the blocking block and the backflow prevention plate respectively.

[0014] With the above solution, the spring is deformed when the anti-backflow plate is opened, so when blood backflow occurs, the elasticity of the spring can be used to drive the anti-backflow plate to reset quickly.

[0015] As a preferred embodiment, a rotating groove is provided on the inner wall of the first connecting head and a rotating ring is rotatably installed in the rotating groove, a connecting plate is fixedly installed on the side of the rotating ring, a first pressure ring is fixedly installed on the side of the connecting plate, a second pressure ring is fixedly installed on the inner wall of the second connecting head, the first pressure ring and the second pressure ring are respectively arranged on both sides of the blood filter net, a plurality of guide columns are fixedly installed on the opposite sides of the first pressure ring and the second pressure ring, and a plurality of guide grooves for inserting the guide columns are provided on both sides of the blood filter net.

[0016] By adopting the above scheme, the first pressure ring and the second pressure ring are used in conjunction with the guide column, so that the blood filter can be effectively pressed and held to ensure stability and avoid shaking.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The blood transfusion device connector structure with a backflow prevention structure is used by arranging a backflow prevention plate in conjunction with a rotating shaft. During blood transfusion, the backflow prevention plate will be opened under the action of blood delivery. When blood backflow occurs, the backflow prevention plate will be reversely rotated and closed, thereby achieving an effective backflow prevention effect and playing a good role in backflow prevention. At the same time, the first connecting tube and the second connecting tube are used in conjunction with each other, and the threaded connection is tightly engaged and is not easy to loosen or fall off.

[0019] The blood transfusion device connector structure with a backflow prevention structure can filter the transported blood by being used in conjunction with a blood filter. At the same time, the blood filter can be effectively pressed and held by using a first pressure ring and a second pressure ring in conjunction with a guide column to ensure stability and avoid shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic structural diagram of the cross section of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the backflow prevention plate of the utility model;

[0023] Figure 4 It is an exploded schematic diagram of the first pressure ring, the blood filter and the second pressure ring of the utility model.

[0024] In the figure: 1. main body of the joint structure; 2. first connecting head; 3. second connecting head; 4. connecting tube 1; 5. connecting tube 2; 6. anti-backflow plate; 7. blood filter; 8. sealing ring; 9. blocking ring; 10. arc rod; 11. spring; 12. blocking block; 13. fixing ring; 14. connecting plate; 15. first pressure ring; 16. second pressure ring; 17. guide column; 18. rotating ring; 19. rotating shaft. DETAILED DESCRIPTION

[0025] See also Figure 1-4 The utility model provides a blood transfusion device connector structure with a backflow prevention structure, including a connector structure body 1, the connector structure body 1 includes a first connector 2 and a second connector 3, a connecting tube 1 4 is fixedly installed on the outer surface of the first connector 2, a connecting tube 2 5 is fixedly installed on the outer surface of the second connector 3, the connecting tube 1 4 and the connecting tube 2 5 are used together, two rotating shafts 19 are rotatably installed on the inner wall of the connecting tube 1 4, an anti-backflow plate 6 is fixedly installed on the outer surface of the rotating shaft 19, a blocking ring 9 is fixedly installed on the inner wall of the first connector 2, the blocking ring 9 is fitted and arranged on the side of the anti-backflow plate 6, and a blood filter 7 is arranged on the inner wall of the second connector 3.

[0026] The inner wall of connecting pipe 1 4 has an internal thread, and the outer surface of connecting pipe 2 5 has an external thread. The internal thread and the external thread are used in combination. The external thread and the internal thread are used in combination to facilitate the connection and assembly of connecting pipe 1 4 and connecting pipe 2 5, and the threaded connection is tightly engaged and not easy to loosen.

[0027] The first connector 2 and the second connector 3 are each provided with an embedded groove at the opposite end, and a sealing ring 8 is embedded in the embedded groove. The two sealing rings 8 are arranged in close contact with each other. The embedded groove and the sealing ring 8 are used together to ensure good sealing properties and avoid overflow.

[0028] Two arc rods 10 are fixed on the side of the blocking ring 9, and the anti-backflow plate 6 is slidably installed on the outer surface of the arc rod 10. A blocking block 12 is fixedly installed on the end of the arc rod 10 away from the blocking ring 9. The arc rod 10 is used in conjunction with the blocking block 12 to limit the rotation of the anti-backflow plate 6.

[0029] The outer sleeve of the arc rod 10 is provided with a spring 11, and the two ends of the spring 11 are fixedly connected to the blocking block 12 and the anti-backflow plate 6 respectively. The spring 11 is deformed when the anti-backflow plate 6 is opened. Therefore, when blood backflow occurs, the elasticity of the spring 11 can be used to drive the anti-backflow plate to reset quickly.

[0030] A rotating groove is provided on the inner wall of the first connecting head 2, and a rotating ring 18 is rotatably installed in the rotating groove, a connecting plate 14 is fixedly installed on the side of the rotating ring 18, a first pressure ring 15 is fixedly installed on the side of the connecting plate 14, and a second pressure ring 16 is fixedly installed on the inner wall of the second connecting head 3. The first pressure ring 15 and the second pressure ring 16 are respectively arranged on both sides of the blood filter 7, and a plurality of guide columns 17 are fixedly installed on the opposite sides of the first pressure ring 15 and the second pressure ring 16. A plurality of guide grooves for inserting the guide columns 17 are provided on both sides of the blood filter 7. The first pressure ring 15 and the second pressure ring 16 are used in conjunction with the guide columns 17 to effectively press and hold the blood filter 7 to ensure stability and avoid shaking.

[0031] When in use, the first connector 2 and the second connector 3 are assembled together by rotating the connecting tube 1 4 and the connecting tube 2 5. During blood transfusion, the blood delivery force impacts the anti-backflow plate 6, driving the anti-backflow plate 6 to rotate and expand. After expansion, blood transfusion will be achieved. When backflow blood occurs, the anti-backflow plate 6 will rotate in the opposite direction and close. At this time, the anti-backflow effect is achieved. At the same time, the blood filter 7 filters the blood during blood delivery. When the blood filter 7 needs to be cleaned and replaced, the connecting tube 1 4 and the connecting tube 2 5 are twisted to separate the first connector 2 and the second connector 3. At this time, the first pressure ring 15 will detach from the blood filter 7, and the blood filter 7 can be removed for replacement.

Claims

1. A blood transfusion device connector structure with a backflow prevention structure, characterized in that: The invention comprises a joint structure body (1), wherein the joint structure body (1) comprises a first connector (2) and a second connector (3), wherein a connecting tube 1 (4) is fixedly mounted on the outer surface of the first connector (2), and a connecting tube 2 (5) is fixedly mounted on the outer surface of the second connector (3), wherein the connecting tube 1 (4) and the connecting tube 2 (5) are used in conjunction with each other, wherein two rotating shafts (19) are rotatably mounted on the inner wall of the connecting tube 1 (4), and an anti-backflow plate (6) is fixedly mounted on the outer surface of the rotating shaft (19), wherein a blocking ring (9) is fixedly mounted on the inner wall of the first connector (2), and the blocking ring (9) is arranged on the side of the anti-backflow plate (6), and a blood filter (7) is arranged on the inner wall of the second connector (3).

2. The blood transfusion device connector structure with a backflow prevention structure according to claim 1, characterized in that: The inner wall of the connecting pipe 1 (4) has an internal thread, and the outer surface of the connecting pipe 2 (5) has an external thread, and the internal thread and the external thread are used in combination.

3. The blood transfusion device connector structure with a backflow prevention structure according to claim 1, characterized in that: An embedded groove is provided at the opposite end of the first connector (2) and the second connector (3), and a sealing ring (8) is embedded in the embedded groove. The two sealing rings (8) are arranged to fit each other.

4. The blood transfusion device connector structure with a backflow prevention structure according to claim 1, characterized in that: Two arc-shaped rods (10) are fixed on the side of the blocking ring (9), the backflow prevention plate (6) is slidably mounted on the outer surface of the arc-shaped rods (10), and a blocking block (12) is fixedly mounted on one end of the arc-shaped rod (10) away from the blocking ring (9).

5. The blood transfusion device connector structure with a backflow prevention structure according to claim 4, characterized in that: The arc-shaped rod (10) is sleeved with a spring (11) on its exterior, and the two ends of the spring (11) are respectively fixedly connected to a blocking block (12) and a backflow prevention plate (6).

6. The blood transfusion device connector structure with a backflow prevention structure according to claim 1, characterized in that: The inner wall of the first connector (2) is provided with a rotating groove and a rotating ring (18) is rotatably installed in the rotating groove, a connecting plate (14) is fixedly installed on the side of the rotating ring (18), a first pressure ring (15) is fixedly installed on the side of the connecting plate (14), and a second pressure ring (16) is fixedly installed on the inner wall of the second connector (3), the first pressure ring (15) and the second pressure ring (16) are respectively arranged on both sides of the blood filter (7), and a plurality of guide columns (17) are fixedly installed on the opposite sides of the first pressure ring (15) and the second pressure ring (16), and a plurality of guide grooves for inserting the guide columns (17) are provided on both sides of the blood filter (7).

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