Infusion apparatus capable of preventing blood return

Abstract

According to the technical scheme, the infusion apparatus capable of preventing blood return is characterized in that the infusion apparatus comprises a bottle stopper puncture outfit, a first infusion tube is fixedly installed in the bottle stopper puncture outfit, and a drip chamber is fixedly installed on the outer wall of the first infusion tube; during use, the floating block is used for floating on the top face of liquid medicine in the drip chamber, the liquid medicine is conveyed through the liquid leakage hole, if the liquid medicine is completely infused, the floating block can move downwards at the moment, the conical block is inserted into the conical pipe, the blocking effect is achieved, and the condition of inclination caused by shaking can be avoided through the arrangement of the floating block; the bottle stopper puncture outfit is used for being inserted into the conical tube and the second infusion tube, so that the floating block and the conical block are kept vertical, and the situation that the conical block inclines and cannot block the conical tube after liquid medicine in the drip chamber is completely infused is avoided. At the moment, the position of the bottle stopper puncture outfit can be adjusted by rotating the threaded ring, so that the bottle stopper puncture outfit is located in the liquid medicine again, and liquid medicine waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an infusion set capable of preventing blood backflow. Background Art

[0002] An infusion set is a common medical consumable. After sterilization, it establishes a channel between the vein and the medication solution and is used for intravenous infusion. It typically consists of eight connected components: an intravenous needle or injection needle, a needle cap, an infusion hose, a medication filter, a flow regulator, a drip chamber, a bottle stopper puncture device, and an air filter. Under atmospheric pressure, the liquid in the bottle flows through the thin infusion hose into the drip chamber. When the water column pressure in the drip chamber exceeds the venous pressure, the liquid in the bottle flows along the hose into the vein.

[0003] According to Chinese patent publication (announcement) number CN210963334U, an infusion set that prevents air from entering the human body due to liquid draining out and prevents blood from returning includes a dripping bucket, a first infusion hose, and a second infusion hose. The dripping bucket has a liquid inlet and a liquid outlet; one end of the first infusion hose is connected to the liquid inlet and extends into the interior space of the dripping bucket; one end of the second infusion hose is connected to the liquid outlet and also includes a blocking portion positioned within the interior space of the dripping bucket; the blocking portion includes a hollow sphere and a solid cone, the hollow sphere and the solid cone being integrally connected; the mass of the solid cone is greater than the mass of the hollow sphere; the diameter of the solid cone is adapted to the diameter of the second infusion hose, and the diameter of the hollow sphere is greater than the diameter of the solid cone. This utility model effectively prevents accidents caused by liquid draining out and air entering the human body, eliminates the need for constant human attention during infusion, and improves safety.

[0004] However, the above device still has some shortcomings in actual use. For example, after the liquid medicine in the drip chamber has flowed out, the hollow sphere and the solid cone may not be vertically blocked inside the second infusion hose, and may be skewed. At the same time, if the hollow sphere and the solid cone are shaken, they may temporarily separate from the second infusion hose, so that air may enter and cause blood backflow. To solve the above problems, we propose an infusion set that prevents blood backflow. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides an infusion set with anti-blood backflow function, which solves the problems raised in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] An infusion set for preventing blood backflow comprises: a bottle cork piercer, a first infusion tube fixedly installed inside the bottle cork piercer, a dripping funnel fixedly installed on the outer wall of the first infusion tube, a second infusion tube provided at the bottom end of the dripping funnel, a third infusion tube provided at the bottom end of the second infusion tube, an infusion needle fixedly installed inside the third infusion tube; and an anti-blood backflow component, the anti-blood backflow component being arranged inside the dripping funnel for preventing blood backflow.

[0008] By adopting the above technical solution, an anti-blood backflow component is provided to block the drip bucket after the infusion is completed to prevent air from entering and causing blood backflow.

[0009] Preferably, the anti-blood backflow component includes: a floating block, which is arranged inside the drip bucket, a conical block is fixedly installed on the bottom surface of the floating block, a plurality of leakage holes are opened on the top surface of the floating block, and a conical tube is fixedly installed inside the drip bucket, and the conical tube is fixedly connected to the second infusion tube.

[0010] By adopting the above technical solution, a floating block is set to float on the top surface of the medicine liquid in the drip bucket and transmit it through the leakage hole. If the medicine liquid is finished, the floating block will move down and the conical block will be inserted into the conical tube to achieve the blocking effect. The setting of the floating block can also avoid the situation of skewing caused by shaking.

[0011] Preferably, the anti-blood-backflow component further comprises: a limiting column, which is fixedly mounted on the bottom surface of the tapered block, and passes through the tapered tube and is sheathed together with the second infusion tube.

[0012] By adopting the above technical solution, a limit column is set to be inserted into the inside of the conical tube and the second infusion tube, so that the floating block and the conical block remain vertical, avoiding the conical block from tilting and being unable to block the conical tube after the medicine in the drip bucket is infused.

[0013] Preferably, a precision filter is fixedly installed at one end of the second infusion tube, and the liquid outlet of the precision filter is fixedly installed together with the third infusion tube.

[0014] By adopting the above technical solution and setting a precision filter, the purpose of excess and exhaust can be achieved.

[0015] Preferably, a flow regulator is provided on the outer wall of the third infusion tube.

[0016] By adopting the above technical solution and providing a flow regulator, it is convenient for users to adjust the infusion speed.

[0017] Preferably, the floating block and the conical block are both made of medical plastics, the outer wall of the bottle stopper piercer is provided with a thread, and the outer wall of the bottle stopper piercer is threadedly connected to a threaded ring.

[0018] By adopting the above technical solution and setting a threaded ring, if the medicine liquid is located below the bottle stopper piercer during use, the position of the bottle stopper piercer can be adjusted by rotating the threaded ring so that it is located in the medicine liquid again, thereby avoiding waste of medicine liquid.

[0019] In summary, the present invention has the following beneficial effects:

[0020] An anti-blood backflow component is set up to block the drip bucket after the infusion is completed to prevent air from entering and causing blood backflow. A floating block is set up to float on the top surface of the medicine liquid in the drip bucket and transmit it through the leakage hole. If the medicine liquid is completed, the floating block will move down and the conical block will be inserted into the conical tube to achieve the blocking effect. The setting of the floating block can also prevent the situation of skewing caused by shaking.

[0021] By setting a limit column, which is used to be inserted into the inside of the conical tube and the second infusion tube, the floating block and the conical block are kept vertical, so as to prevent the conical block from tilting and being unable to block the conical tube after the medicine in the drip bucket is finished. By setting a precision filter, the purpose of over-dosage and exhaust is achieved.

[0022] By setting a flow regulator, it is convenient for users to adjust the infusion speed. By setting a threaded ring, if the medicine liquid is located below the bottle stopper piercer during use, the position of the bottle stopper piercer can be adjusted by rotating the threaded ring so that it is located in the medicine liquid again, avoiding waste of medicine liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the drip bucket of the present utility model;

[0025] Figure 3 It is a schematic diagram of the threaded ring structure of the utility model.

[0026] Figure numerals: 100, bottle stopper puncture device; 200, first infusion tube; 300, drip chamber; 400, second infusion tube; 500, third infusion tube; 600, infusion needle; 700, anti-blood backflow component; 701, floating block; 702, conical block; 703, leakage hole; 704, conical tube; 705, limiting column; 800, precision filter; 900, flow regulator; 901, threaded ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The following examples are intended to illustrate the present invention and are not intended to limit the scope of protection of the present invention. The conditions in the examples may be further adjusted according to specific conditions. Simple improvements to the method of the present invention based on the concept of the present invention fall within the scope of protection claimed by the present invention.

[0029] refer to Figure 1-Figure 3 An infusion set for preventing blood backflow comprises: a bottle stopper puncture device 100, wherein a first infusion tube 200 is fixedly installed inside the bottle stopper puncture device 100, a dripping funnel 300 is fixedly installed on the outer wall of the first infusion tube 200, a second infusion tube 400 is provided at the bottom end of the dripping funnel 300, a third infusion tube 500 is provided at the bottom end of the second infusion tube 400, an infusion needle 600 is fixedly installed inside the third infusion tube 500, an anti-blood backflow component 700 is provided inside the dripping funnel 300 for preventing blood backflow, and the anti-blood backflow component 700 is provided for blocking the dripping funnel 300 after the infusion is completed to prevent air from entering and causing blood backflow. 0 includes: a floating block 701, which is arranged inside the dripping funnel 300. A conical block 702 is fixedly installed on the bottom surface of the floating block 701. A plurality of leakage holes 703 are opened on the top surface of the floating block 701. A conical tube 704 is fixedly installed inside the dripping funnel 300. The conical tube 704 is fixedly connected to the second infusion tube 400. By providing the floating block 701, it is used to float on the top surface of the liquid in the dripping funnel 300 and transmit the liquid through the leakage holes 703. When the liquid is delivered, the floating block 701 will move downward, and the conical block 702 will be inserted into the conical tube 704 to achieve a blocking effect. The provision of the floating block 701 can also prevent the situation where shaking causes skewness.

[0030] refer to Figure 1-Figure 3The anti-blood backflow component 700 also includes: a limiting column 705, which is fixedly installed on the bottom surface of the conical block 702, and the limiting column 705 passes through the conical tube 704 and is arranged together with the second infusion tube 400. By setting the limiting column 705, it is used to be inserted into the inside of the conical tube 704 and the second infusion tube 400, so that the floating block 701 and the conical block 702 remain vertical, to prevent the conical block 702 from tilting and being unable to block the conical tube 704 after the liquid in the drip bucket 300 is infused. A precision filter 800 is fixedly installed at one end of the second infusion tube 400, and the liquid outlet of the precision filter 800 is fixedly installed with the third infusion tube 500. The precision filter 800 is provided to achieve the purpose of excess and exhaust.

[0031] refer to Figure 1-Figure 3 The outer wall of the third infusion tube 500 is provided with a flow regulator 900. By providing the flow regulator 900, the user can adjust the infusion speed. The floating block 701 and the tapered block 702 are both made of medical plastic. The outer wall of the cork piercer 100 is provided with a thread. The outer wall of the cork piercer 100 is threaded with a threaded ring 901. By providing the threaded ring 901, if the liquid medicine is located below the cork piercer 100 during use, the position of the cork piercer 100 can be adjusted by rotating the threaded ring 901 so that it is located in the liquid medicine again to avoid waste of liquid medicine.

[0032] Working principle: Please refer to Figure 1-Figure 3 As shown, when in use, the floating block 701 is used to float on the top surface of the liquid in the drip bucket 300 and is transmitted through the leakage hole 703. If the liquid is delivered, the floating block 701 will move down, and the tapered block 702 will be inserted into the tapered tube 704 to achieve a blocking effect. The setting of the floating block 701 can avoid the skewness caused by shaking. By setting a limit column 705, which is used to be inserted into the tapered tube 704 and the second infusion tube 400, the floating block 701 and the tapered block 702 are kept vertical to avoid After the liquid medicine in the drip-free funnel 300 is infused, the conical block 702 becomes crooked and cannot block the conical tube 704. A precision filter 800 is provided to achieve the purpose of over-dosage and exhaust. A flow regulator 900 is provided to facilitate the user to adjust the infusion speed. A threaded ring 901 is provided, so that if the liquid medicine is located below the bottle stopper piercer 100 during use, the position of the bottle stopper piercer 100 can be adjusted by rotating the threaded ring 901 so that it is located in the liquid medicine again, thereby avoiding waste of liquid medicine.

[0033] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "including" or "comprising" and the like used in the present invention mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words "connect" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. The words "upper", "lower", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-blood-back infusion device, characterized in that: include: A bottle stopper piercer (100), wherein a first infusion tube (200) is fixedly installed inside the bottle stopper piercer (100), a dripping funnel (300) is fixedly installed on the outer wall of the first infusion tube (200), a second infusion tube (400) is provided at the bottom end of the dripping funnel (300), a third infusion tube (500) is provided at the bottom end of the second infusion tube (400), and an infusion needle (600) is fixedly installed inside the third infusion tube (500); The anti-blood-backflow component (700) is arranged inside the drip bucket (300) and is used to prevent blood backflow.

2. The anti-blood-back infusion device according to claim 1, characterized in that: The anti-blood-backflow component (700) comprises: A floating block (701) is arranged inside the drip bucket (300), a conical block (702) is fixedly installed on the bottom surface of the floating block (701), a plurality of leakage holes (703) are opened on the top surface of the floating block (701), a conical tube (704) is fixedly installed inside the drip bucket (300), and the conical tube (704) is fixedly connected to the second infusion tube (400).

3. The anti-blood-back infusion device according to claim 2, characterized in that: The anti-blood-backflow component (700) further includes: A limiting post (705) is fixedly mounted on the bottom surface of the tapered block (702), and the limiting post (705) passes through the tapered tube (704) and is sleeved together with the second infusion tube (400).

4. The anti-blood-back infusion device according to claim 1, characterized in that: A precision filter (800) is fixedly mounted on one end of the second infusion tube (400), and the liquid outlet of the precision filter (800) is fixedly mounted together with the third infusion tube (500).

5. The anti-blood-back infusion device according to claim 1, characterized in that: The outer wall of the third infusion tube (500) is provided with a flow regulator (900).

6. The anti-blood-back infusion device according to claim 2, characterized in that: The floating block (701) and the conical block (702) are both made of medical plastics. The outer wall of the bottle stopper piercer (100) is provided with a thread, and the outer wall of the bottle stopper piercer (100) is threadedly connected to a threaded ring (901).

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