Infusion apparatus capable of preventing blood return

Abstract

The utility model discloses an infusion apparatus capable of preventing blood return, and relates to the technical field of instruments for inputting a medium into a human body or on the human body, the infusion apparatus comprises an infusion apparatus, the infusion apparatus comprises a bottle plug puncture needle, a first infusion hose, a drip chamber, a second infusion hose, a needle tube and a vein puncture needle, a buoyancy block is installed on the inner wall of the drip chamber, and a cavity is formed in an inner cavity of the buoyancy block; a buoyancy block is installed in the drip chamber, a hemisphere is installed on the lower wall of the buoyancy block, the hemisphere can be inserted into the second infusion hose, and a positioning ring is installed on the lower wall of the buoyancy block. In addition, a positioning ring is further arranged on the lower wall of the buoyancy block, the position of the buoyancy block can be guaranteed through cooperation of the positioning ring and a positioning cylinder, the second infusion hose can be completely plugged, and the phenomenon of blood return caused by unfirm plugging is avoided.

Description

Technical Field

[0001] This patent relates to the field of medical device technology, specifically an infusion set that prevents blood backflow. Background Art

[0002] An infusion set is a device that infuses media into or onto the human body and is one of the most commonly used medical devices in clinical practice;

[0003] Under the action of atmospheric pressure, the liquid in the bottle flows into the drip bucket along the thinner infusion hose. When the water column pressure in the drip bucket is greater than the venous pressure, the liquid in the bottle flows into the vein along the hose. During the use of some existing infusion devices, when the liquid in the infusion tube flows into the patient's body, if the needle is not removed in time, blood will return. If the blood coagulates into blocks and enters the human body, it may block the blood vessels.

[0004] In order to prevent blood backflow, the existing infusion device will set a float in the drip bucket of the infusion, so that when there is no liquid in the drip bucket, the float will block the infusion tube;

[0005] However, when there is no liquid in the dropper, the float in the existing infusion set cannot always accurately fall onto the top of the infusion tube to block the infusion tube, resulting in poor blood return prevention effect.

[0006] Patent content

[0007] The purpose of this patent is to provide an infusion set that prevents blood from returning to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above purpose, this patent provides the following technical solutions: an anti-blood backflow infusion set, comprising an infusion set, the infusion set comprising a bottle stopper puncture needle, a first infusion hose, a drip bucket, a second infusion hose, a needle tube and a venous puncture needle, and the inner wall of the drip bucket is installed with a buoyancy block;

[0009] The buoyancy block can float above the liquid in the drip bucket, the inner cavity of the buoyancy block is provided with a cavity, the lower wall of the buoyancy block is provided with a hemisphere, the hemisphere can be inserted into the second infusion hose, the lower wall of the buoyancy block is provided with a positioning ring, the positioning ring is arranged on the outside of the hemisphere, and the positioning ring can be sleeved on the outside of the second infusion hose;

[0010] The inner cavity of the positioning ring is equipped with a main magnetic block, which is ring-shaped. The outer part of the second infusion hose is sleeved with a positioning tube, and the upper wall of the positioning tube is equipped with a secondary magnetic block, which can be magnetically connected to the main magnetic block.

[0011] Preferably, the input end of the bottle stopper puncture needle is inserted into an external liquid storage device, and the output end of the bottle stopper puncture needle is installed with one end of a first infusion hose, the other end of the first infusion hose is inserted and installed in the drip funnel, one end of the second infusion hose passes through the lower wall of the drip funnel and communicates with the inner cavity of the drip funnel, and the other end of the second infusion hose is installed with a needle tube, and a venous puncture needle is installed at the end of the needle tube.

[0012] Preferably, the outer portion of the second infusion hose is sleeved with a flow rate regulator, and the flow rate regulator can adjust the flow rate of the liquid in the infusion set.

[0013] Preferably, the flow rate regulator includes a shell, a through hole, a slide groove and a roller. The upper wall of the shell is provided with a through hole, and the second infusion hose is inserted into the shell through the through hole. The side wall of the shell is provided with a slide groove, and the slide groove is connected with the through hole. A roller is slidably installed in the slide groove, and the roller can fit with the side wall of the second infusion hose.

[0014] Preferably, it also includes a protective cover, which is sleeved on the outside of the second infusion hose, and the protective cover can be covered on the outside of the flow rate regulator.

[0015] Preferably, a convex ring is installed on the outer side of the second infusion hose, and the convex ring is arranged in the inner cavity of the positioning tube. A clamping block is installed on the inner wall of the positioning tube, and the clamping block is located above the convex ring.

[0016] Preferably, an exhaust pipe is inserted into the side wall above the drip bucket, a breathable and waterproof membrane is installed on the inner wall of the exhaust pipe, and an exhaust cover is installed at the end of the exhaust pipe.

[0017] Preferably, an infusion alarm is installed on the outside of the first infusion hose.

[0018] Compared with the prior art, the beneficial effects of this patent are:

[0019] The device arranges a buoyancy block in its drip bucket. When there is no liquid in the drip bucket, the buoyancy block can be buckled over the second infusion hose to block the second infusion hose, thereby preventing blood from returning. In addition, a positioning ring is provided on the lower wall of the buoyancy block. The positioning ring cooperates with the positioning tube to ensure the position of the buoyancy block, so that the second infusion hose can be completely blocked to avoid blood returning due to loose blocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of this patent.

[0021] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle.

[0022] Figure 3 This is a schematic diagram of the buoyancy block structure of this patent.

[0023] Figure 4 for Figure 1 Schematic diagram of the structure at point B in the middle.

[0024] In the figure: 1 infusion set, 2 buoyancy block, 3 cavity, 4 hemisphere, 5 positioning ring, 6 main magnetic block, 7 positioning cylinder, 8 auxiliary magnetic block, 9 regulator, 10 protective cover, 11 bottle stopper puncture needle, 12 first infusion hose, 13 drip bucket, 14 second infusion hose, 15 needle tube, 16 intravenous puncture needle, 17 convex ring, 18 card block, 19 exhaust pipe, 20 breathable water-stopping membrane, 21 exhaust cover, 22 infusion alarm, 91 shell, 92 through hole, 93 slide groove, 94 roller. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0026] See also Figure 1-4 This patent provides a technical solution: an anti-blood backflow infusion set, including an infusion set 1, the infusion set 1 includes a bottle stopper puncture needle 11, a first infusion hose 12, a drip bucket 13, a second infusion hose 14, a needle tube 15 and a venous puncture needle 16, and the inner wall of the drip bucket 13 is installed with a buoyancy block 2;

[0027] When there is liquid medicine in the drip bucket 13, the buoyancy block 2 can float above the liquid, and the liquid can smoothly enter the second infusion hose 14, and then flow into the human vein through the venous puncture needle 11;

[0028] When the infusion is about to end, after the liquid in the drip bucket 13 completely flows into the second infusion hose 14, the buoyancy block 2 can fall above the second infusion hose 14, and its hemispherical body 4 is inserted into the second infusion hose 14, thereby blocking the second infusion hose 14, sealing the second infusion hose 14, and preventing the liquid inside from flowing, thereby achieving the purpose of preventing blood return;

[0029] The buoyancy block 2 can float above the liquid in the drip bucket 13. The inner cavity of the buoyancy block 2 is provided with a cavity 3. The lower wall of the buoyancy block 2 is provided with a hemispherical body 4, which can be inserted into the second infusion hose 14. The lower wall of the buoyancy block 2 is provided with a positioning ring 5, which is arranged on the outer side of the hemispherical body 4 and can be sleeved on the outer side of the second infusion hose 14.

[0030] The cavity 3 inside the buoyancy block 2 can reduce the weight of the buoyancy block 2 and increase the buoyancy of the buoyancy block 2. At the same time, the cooperation between the main magnetic block 6 in the positioning ring 5 and the secondary magnetic block 8 on the positioning cylinder 7 can prevent the buoyancy block 2 from being deflected after falling, ensuring that the buoyancy block 2 can completely block the second infusion hose 14.

[0031] The inner cavity of the positioning ring 5 is installed with a main magnetic block 6, which is ring-shaped. The outer part of the second infusion hose 14 is sleeved with a positioning tube 7, and the upper wall of the positioning tube 7 is installed with a secondary magnetic block 8, which can be magnetically connected to the main magnetic block 6.

[0032] Specifically, the input end of the bottle plug puncture needle 11 is inserted into the external liquid storage device, and the output end of the bottle plug puncture needle 11 is installed with one end of the first infusion hose 12, and the other end of the first infusion hose 12 is inserted and installed in the dripping funnel 13, and one end of the second infusion hose 14 passes through the lower wall of the dripping funnel 13 and communicates with the inner cavity of the dripping funnel 13, and the other end of the second infusion hose 14 is installed with a needle tube 15, and the end of the needle tube 15 is installed with a venous puncture needle 16;

[0033] The liquid storage device proposed in this article can be a medicine bottle or a medicine bag. After the bottle stopper puncture needle 11 is inserted into the liquid storage device, the medicine in the liquid storage device will enter the drip funnel 13 through the first infusion hose 12, and then enter the thinner needle tube 15 through the second infusion hose 14, and then enter the human vein through the venous puncture needle 16 to achieve intravenous infusion.

[0034] Specifically, the second infusion hose 14 is sleeved with a flow rate regulator 9, which can adjust the flow rate of the liquid in the infusion set 1;

[0035] By adjusting the roller 94 on the flow rate regulator 9, the roller 94 compresses the second infusion hose 14, and the flow rate is adjusted according to the degree of compression.

[0036] Specifically, the flow rate regulator 9 includes a shell 91, a through hole 92, a slide groove 93 and a roller 94. The upper wall of the shell 91 is provided with a through hole 92, and the second infusion hose 14 passes through the through hole 92 into the shell 91. The side wall of the shell 91 is provided with a slide groove 93, and the slide groove 93 is connected with the through hole 92. A roller 94 is slidably installed in the slide groove 93, and the roller 94 can fit with the side wall of the second infusion hose 14.

[0037] Specifically, it also includes a protective cover 10, which is sleeved on the outside of the second infusion hose 14, and the protective cover 10 can be covered on the outside of the flow rate regulator 9;

[0038] Because frequent adjustment of the flow rate regulator 9 may cause the infusion personnel to experience symptoms such as palpitations and difficulty breathing, the device is provided with a protective cover 10, and the flow rate regulator 9 is covered in the protective cover 10 to prevent personnel other than medical staff from frequently adjusting it.

[0039] Specifically, a convex ring 17 is installed on the outer side of the second infusion hose 14, and the convex ring 17 is arranged in the inner cavity of the positioning tube 7. A clamping block 18 is installed on the inner wall of the positioning tube 7, and the clamping block 18 is located above the convex ring 17;

[0040] The sliding range of the positioning tube 7 can be limited by providing the convex ring 17. When there is no liquid in the drip bucket 13, the positioning tube 7 can be automatically adsorbed under the drip bucket 13 through the cooperation between the main magnetic block 6 and the auxiliary magnetic block 8.

[0041] Specifically, an exhaust pipe 19 is inserted into the side wall above the drip bucket 13 , a breathable and waterproof membrane 20 is installed on the inner wall of the exhaust pipe 19 , and an exhaust cover 21 is installed at the end of the exhaust pipe 19 .

[0042] Specifically, an infusion alarm 22 is installed on the outside of the first infusion hose 12;

[0043] The infusion alarm 22 proposed in this article is a prior art, which is composed of a single-chip microcomputer, a sensing clip, a manual switch, and a buzzer. It obtains the patient's infusion progress through sensors to achieve real-time sensing and monitoring of the infusion process.

[0044] Working principle: Under normal infusion state, there is liquid medicine in the drip bucket 13, and the buoyancy block 2 can float above the liquid. At this time, the liquid can smoothly enter the second infusion hose 14, and then flow into the human vein through the venous puncture needle 11;

[0045] When there is no medicine liquid in the external liquid storage device, after the medicine liquid flows through the position of the infusion alarm 22, the infusion alarm 22 will generate a buzzer alarm. If the medical staff cannot arrive in time to remove the needle at this time, the liquid in the drip bucket 13 will completely flow into the second infusion hose 14. At this time, the buoyancy block 2 can fall on the top of the second infusion hose 14, and its hemisphere 4 is inserted into the second infusion hose 14, thereby blocking the second infusion hose 14 and sealing the second infusion hose 14 so that the liquid inside it stops flowing, thereby achieving the purpose of preventing blood backflow.

[0046] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An infusion set for preventing blood backflow, comprising an infusion set (1), characterized in that: The infusion device (1) comprises a bottle stopper puncture needle (11), a first infusion hose (12), a drip bucket (13), a second infusion hose (14), a needle tube (15) and a venous puncture needle (16); a buoyancy block (2) is installed on the inner wall of the drip bucket (13); The buoyancy block (2) can float above the liquid in the drip bucket (13); the inner cavity of the buoyancy block (2) is provided with a cavity (3); the lower wall of the buoyancy block (2) is provided with a hemisphere (4); the hemisphere (4) can be inserted into the second infusion hose (14); the lower wall of the buoyancy block (2) is provided with a positioning ring (5); the positioning ring (5) is arranged on the outer side of the hemisphere (4); the positioning ring (5) can be sleeved on the outside of the second infusion hose (14); The inner cavity of the positioning ring (5) is equipped with a main magnetic block (6), and the main magnetic block (6) is ring-shaped. The outer part of the second infusion hose (14) is sleeved with a positioning tube (7), and the upper wall of the positioning tube (7) is equipped with a secondary magnetic block (8), and the secondary magnetic block (8) can be magnetically connected to the main magnetic block (6).

2. The anti-blood-back infusion device according to claim 1, characterized in that: The input end of the bottle stopper puncture needle (11) is inserted into an external liquid storage device, and the output end of the bottle stopper puncture needle (11) is installed with one end of a first infusion hose (12), and the other end of the first infusion hose (12) is inserted and installed in a drip bucket (13), and one end of the second infusion hose (14) passes through the lower wall of the drip bucket (13) and communicates with the inner cavity of the drip bucket (13), and the other end of the second infusion hose (14) is installed with a needle tube (15), and a venous puncture needle (16) is installed at the end of the needle tube (15).

3. The anti-blood-back infusion device according to claim 2, characterized in that: The second infusion hose (14) is sleeved with a flow rate regulator (9) on its exterior, and the flow rate regulator (9) can regulate the flow rate of the liquid in the infusion set (1).

4. The anti-blood-back infusion device according to claim 3, characterized in that: The flow rate regulator (9) comprises a shell (91), a through hole (92), a slide groove (93) and a roller (94); the upper wall of the shell (91) is provided with a through hole (92); the second infusion hose (14) penetrates into the shell (91) through the through hole (92); the side wall of the shell (91) is provided with a slide groove (93); the slide groove (93) is connected to the through hole (92); a roller (94) is slidably installed in the slide groove (93); the roller (94) can fit with the side wall of the second infusion hose (14).

5. The anti-blood-back infusion device according to claim 4, characterized in that: It also comprises a protective cover (10), wherein the protective cover (10) is sleeved on the outside of the second infusion hose (14), and the protective cover (10) can be sleeved on the outside of the flow rate regulator (9).

6. The anti-blood-back infusion set according to claim 1, characterized in that: A convex ring (17) is installed on the outer side of the second infusion hose (14), and the convex ring (17) is arranged in the inner cavity of the positioning tube (7). A clamping block (18) is installed on the inner wall of the positioning tube (7), and the clamping block (18) is located above the convex ring (17).

7. The anti-blood-back infusion set according to claim 1, characterized in that: An exhaust pipe (19) is inserted into the side wall above the drip bucket (13), a breathable and waterproof membrane (20) is installed on the inner wall of the exhaust pipe (19), and an exhaust cover (21) is installed at the end of the exhaust pipe (19).

8. The anti-blood-back infusion set according to claim 1, characterized in that: An infusion alarm (22) is installed on the outside of the first infusion hose (12).

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