Three-cavity nutrition bag injection connector

Abstract

The utility model discloses a three-cavity nutrition bag injection connector which comprises a connector body and is characterized in that the connector body comprises a communicating pipe, a liquid collecting hopper and a liquid injection pipe which are respectively arranged at the upper end and the lower end of the communicating pipe, and a plurality of drainage pipes which are circumferentially distributed on the outer side of the liquid collecting hopper at equal intervals; the medicine puncture mechanism is installed at the tail end of the drainage tube in a threaded mode, the flow guide needle is arranged at the tail end of the liquid injection tube, the needle cap is detachably installed on the flow guide needle, and the infusion-flow regulator is arranged in the middle of the medicine puncture mechanism and the middle of the liquid injection tube. According to the utility model, the number of rubber plug insertion times can be reduced, various medicaments can be injected into the nutrition bag at the same time, the on-off of the injected liquid medicine can be actively controlled, and external germs are prevented from entering the nutrition bag in the injection process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to an injection connector for a three-chamber nutrition bag. Background Art

[0002] At present, when clinicians often use the three-chamber nutrition bag fat emulsion amino acid (17) glucose (11%) injection (including two specifications of 1440 ml and 1920 ml), because its components often cannot meet the needs of patients, additional components such as amino acids, alanyl glutamine injection, and electrolytes need to be added. At present, most pharmacists mix and prepare through the following two methods; Method 1: Use a syringe to draw liquid multiple times and add it from the medicine adding port. Currently, the maximum capacity of the syringe used clinically is 60 ml, and generally, when drawing medicine liquid, it is required to be <3 / 4 of the capacity. Therefore, this method requires drawing medicine liquid multiple times and inserting the medicine adding port multiple times; in the actual operation process, due to the size limitation of the medicine adding port and inserting the rubber stopper of the medicine adding port multiple times; Method 2: Hang the liquid to be added such as amino acids on the horizontal laminar flow bench, connect the amino acids and the three-chamber nutrition bag with an infusion connecting tube, and insert a syringe needle into the rubber stopper of the amino acids for air replacement;

[0003] The above two methods have the following disadvantages:

[0004] 1. Inserting the rubber stopper multiple times easily causes the phenomenon of rubber stopper desquamation, bringing debris particles into the nutrition bag, causing infusion reactions in patients, leading to reactions such as vascular embolism, myocardial infarction, allergy, etc., and even death;

[0005] 2. During the process of inserting the rubber stopper multiple times, due to the nature of the rubber itself, the rubber stopper of the medicine adding port will fall off, leak liquid, etc., resulting in the pollution of the nutrient solution and the damage of the whole bag of nutrient solution;

[0006] 3. Due to the need for multiple extractions and infusions, it affects the working efficiency of pharmacists. Usually, it takes 20 minutes or more to use this method for 500 ml of liquid. And pharmacists need to prepare a large number of nutrient solutions in a day, and they cannot complete the preparation work in time, which also affects the guarantee of patients' nutrition supplement;

[0007] 4. Due to the air replacement principle, when the glass bottle medicine is connected for drip infusion, a needle needs to be inserted for air circulation replacement. Since the needle is exposed to the air and has no filtering effect, the medicine is easily contaminated by air bacteria; the connecting tube has no relevant switch, and when an error or other problems occur, the liquid flow cannot be stopped in time.

[0008] Therefore, the utility model provides an injection connector for a three-chamber nutrition bag. Content of the Utility Model

[0009] The utility model aims to provide a three-chamber nutrient bag injection connector which can reduce the number of plug insertions, can simultaneously inject multiple medicines into a nutrient bag, can actively control the on and off of the injection of medicine liquid and prevent external pathogens from entering the nutrient bag during the injection process.

[0010] In order to achieve the above-mentioned technical effect, the utility model is realized through the following technical scheme: a three-chamber nutrient bag injection connector, including a connector body, characterized in that: the connector body includes a connecting tube, a liquid collecting bucket and an injection tube respectively arranged at the upper and lower ends of the connecting tube, a plurality of drainage tubes equidistantly distributed on the outside of the liquid collecting bucket, a drug puncture mechanism threadedly installed at the end of the drainage tube, a guide needle arranged at the end of the injection tube, a needle cap removably installed on the guide needle, and an infusion-flow regulator arranged in the middle of the drug puncture mechanism and the middle of the injection tube.

[0011] Furthermore, the liquid collecting hopper body is an inverted frustum structure, and the size of the bottom end of the liquid collecting hopper is adapted to the connecting pipe.

[0012] Furthermore, the drug puncture mechanism includes an external threaded joint threadedly connected to the upper end of the connecting tube, a guide tube fixedly connected to one end of the external threaded joint, a sealing ring arranged on the end face of the other end of the external threaded joint, a puncture needle fixedly installed at the end of the guide tube, a needle cap removably installed on the puncture needle, an air exchange tube arranged at the side end of the puncture needle, and an air filter element arranged at the end of the air exchange tube; an infusion-flow regulator is installed in the middle of the guide tube.

[0013] Furthermore, the sealing ring is an annular silicone ring, the inner diameter of the sealing ring is larger than the inner diameter of the external threaded joint, and the outer diameter is smaller than the outer diameter of the external threaded joint.

[0014] Furthermore, a sealing cap is threadedly connected to the external threaded joint.

[0015] Furthermore, a threaded sleeve adapted to the external threaded joint is provided at the end of the drainage tube; a sealing cap is threadedly connected to the threaded sleeve.

[0016] Furthermore, the connecting tube, injection tube and drainage tube are all made of existing transparent soft infusion tubes.

[0017] Furthermore, the infusion-flow regulator adopts the flow regulator provided on the existing disposable infusion set.

[0018] The beneficial effects of the utility model are:

[0019] When the connector of the utility model adds medicine to the three-chamber nutrient bag, it is only necessary to insert the guide needle into the medicine adding port of the three-chamber nutrient bag once, and then it is only necessary to pull out the puncture needle and insert other medicines such as other amino acids to add other medicines, thereby avoiding the risks of the rubber plug of the three-chamber nutrient bag falling off and leakage, and reducing the occurrence of infusion reactions in patients; at the same time, by providing a liquid collecting bucket and arranging a plurality of drainage tubes on the liquid collecting bucket, the connector can simultaneously inject a variety of medicines into the three-chamber nutrient bag, thereby improving the injection efficiency, and at the same time, the length of the pipeline is also lengthened, and the needle cap is added to avoid the risks of needle falling off and stabbing, thereby reducing the safety hazards of the staff; by providing an air filter element at the end of the air exchange tube, bacteria, dust and other substances in the air are filtered to reduce the contamination of the medicine solution by the air; by providing an infusion-flow regulator, when errors or other problems are found during the infusion process, the medicine input can be actively controlled to be on and off, and the infusion is stopped in time, thereby reducing the waste of medicines, and the controllability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a front view of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the utility model in another direction;

[0024] Figure 4 The utility model is a schematic diagram of the connection structure of an external thread joint and a threaded sleeve.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Connector body; 11. Connecting tube; 12. Liquid collecting hopper; 13. Liquid injection tube; 14. Drainage tube; 141. Screw sleeve; 15. Drug puncture mechanism; 151. External threaded connector; 152. Diversion tube; 153. Sealing ring; 154. Puncture needle; 155. Air exchange tube; 156. Air filter element; 157. Sealing cap; 16. Diversion needle; 161. Needle cap; 17. Infusion-flow regulator. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] See also Figures 1 to 3 As shown, a three-chamber nutrient bag injection connector includes a connector body 1, characterized in that: the connector body 1 includes a connecting tube 11, a liquid collecting bucket 12 and an injection tube 13 respectively arranged at the upper and lower ends of the connecting tube 11, a plurality of drainage tubes 14 equidistantly distributed on the outside of the liquid collecting bucket 12, a drug puncture mechanism 15 threadedly installed at the end of the drainage tube 14, a guide needle 16 arranged at the end of the injection tube 13, a needle cap 161 disassembled and installed on the guide needle 16, and an infusion-flow regulator 17 arranged in the middle of the drug puncture mechanism 15 and the middle of the injection tube 13.

[0030] The main body of the liquid collecting hopper 12 is an inverted truncated cone structure, and the size of the bottom end of the liquid collecting hopper 12 is adapted to the connecting tube 11. The medicine drained by the drainage tube 14 can be collected together, transmitted to the injection tube 13 through the connecting tube 11, and then injected into the three-chamber nutrient bag through the guide needle 16.

[0031] The drug puncture mechanism 15 includes an external threaded joint 151 threadedly connected to the upper end of the connecting tube 11, a guide tube 152 fixedly connected to one end of the external threaded joint 151, a sealing ring 153 arranged on the end surface of the other end of the external threaded joint 151, a puncture needle 154 fixedly installed at the end of the guide tube 152, a needle cap 161 removably installed on the puncture needle 154, an air exchange tube 155 arranged at the side end of the puncture needle 154, and an air filter element 156 arranged at the end of the air exchange tube 155; the infusion-flow regulator 17 is installed in the middle of the guide tube 152. The puncture needle 154 can smoothly pierce the medicine plug, and with the cooperation of the air exchange tube 155, the medicine in the medicine bottle can be smoothly discharged along the guide tube 152; the needle cap 161 is provided to prevent the puncture needle 154 from piercing medical personnel when taking it, thereby improving safety; by providing the external threaded connector 151 and the sealing ring 153, the device can install a suitable number of guide tubes 152 according to specific needs, thereby improving practicality.

[0032] The sealing ring 153 is an annular silicone ring, the inner diameter of the sealing ring 153 is larger than the inner diameter of the external threaded joint 151, and the outer diameter is smaller than the outer diameter of the external threaded joint 151; the end of the drainage tube 14 is provided with a screw sleeve 141 adapted to the external threaded joint 151, and a sealing cap 157 is threadedly connected to the screw sleeve 141. When the external threaded joint 151 and the screw sleeve 141 are matched and connected, the butt cross section thereof can be sealed to prevent leakage of the medicine.

[0033] The external threaded connector 151 is threadedly connected with a sealing cap 157 to ensure that other unused external threaded connectors 151 remain sealed to avoid being contaminated by the outside world.

[0034] The connecting tube 11, the injection tube 13 and the drainage tube 14 are all made of existing transparent soft infusion tubes; the infusion-flow regulator 17 adopts the flow regulator provided on the existing disposable infusion set. It is ensured that when the adjusting roller on the infusion-flow regulator 17 is rolled, the roller can squeeze the pipe to achieve the function of blocking the input of the medicine and adjusting the flow of the medicine input.

[0035] Example 2

[0036] The structure composed of the guide tube, puncture needle, needle cap, air exchange tube and air filter of the drug puncture mechanism described in this embodiment is the same as the structure of the medicine bottle puncture end of the existing disposable infusion set; it can penetrate the rubber stopper of the medicine bottle and enter the interior of the medicine bottle, and at the same time exchange airflow with the outside world through the air exchange tube at the side end to ensure that the medicine can flow out along the puncture needle. The air filter element set at the same time has the same structure as the air filter element setting on the existing disposable infusion set.

[0037] Example 3

[0038] Working principle: When using this device, first hang the amino acids and other medicines to be injected into the three-chamber nutrient bag on the horizontal laminar flow table, then take out the new connector, install the appropriate number of medicine puncture mechanisms 15 on the drainage tube 14 according to the number of medicines, then remove the needle cap 161 on the diversion needle 16, and insert the diversion needle 16 into the rubber plug of the three-chamber nutrient bag, then remove the needle caps of the puncture needles 154 on each diversion tube 152, and insert the puncture needles 154 into the corresponding medicine bottle rubber plugs one by one, at this time control the infusion-flow regulator 17 in the middle of the diversion tube 152 and the middle of the injection tube 13 to guide the medicine in the medicine bottle into the three-chamber nutrient bag; wait for the medicine to completely flow into the three-chamber nutrient bag to complete the medicine insertion.

[0039] When errors or other problems are found during the infusion process, the infusion can be stopped in time by closing the infusion-flow regulator 17 in the middle of the guide tube 152 and the middle of the injection tube 13, thereby reducing drug waste and having strong controllability.

[0040] The drug puncture mechanism 15 is installed on the drainage tube 14 by removing the sealing cap 157 of the drainage tube 14 to be installed, and similarly removing the sealing cap of the external threaded joint 151 on the drainage tube 152, and connecting the drainage tube 14 and the external threaded joint 151 through a threaded connection; at this time, the sealing ring 153 is provided to ensure the sealing of the connection section.

Claims

1. A three-chamber nutrient bag injection connector, comprising a connector body, characterized in that: The connector body includes a connecting pipe, a liquid collecting bucket and a liquid injection pipe respectively arranged at the upper and lower ends of the connecting pipe, a plurality of drainage pipes equidistantly distributed on the outside of the liquid collecting bucket, a medicine puncture mechanism threadedly mounted at the end of the drainage pipe, a guide needle arranged at the end of the liquid injection pipe, a needle cap detachably mounted on the guide needle, and an infusion-flow regulator arranged in the middle of the medicine puncture mechanism and the middle of the liquid injection pipe; The drug puncture mechanism includes an external threaded joint threadedly connected to the upper end of the connecting tube, a guide tube fixedly connected to one end of the external threaded joint, a sealing ring arranged on the end surface of the other end of the external threaded joint, a puncture needle fixedly installed at the end of the guide tube, a needle cap removably installed on the puncture needle, an air exchange tube arranged at the side end of the puncture needle, and an air filter element arranged at the end of the air exchange tube; an infusion-flow regulator is installed in the middle of the guide tube.

2. A three-chamber nutrient bag injection connector according to claim 1, characterized in that: The main body of the liquid collecting hopper is an inverted frustum structure, and the size of the bottom end of the liquid collecting hopper is adapted to the connecting pipe.

3. A three-chamber nutrition bag injection connector according to claim 1, characterized in that: The sealing ring is an annular silicone ring, the inner diameter of the sealing ring is larger than the inner diameter of the external threaded joint, and the outer diameter is smaller than the outer diameter of the external threaded joint.

4. A three-chamber nutrient bag injection connector according to claim 1, characterized in that: A sealing cap is threadedly connected to the external thread joint.

5. A three-chamber nutrient bag injection connector according to claim 1, characterized in that: The end of the drainage tube is provided with a threaded sleeve matched with the external threaded joint; a sealing cap is threadedly connected to the threaded sleeve.

6. A three-chamber nutrient bag injection connector according to claim 1, characterized in that: The connecting tube, the injection tube and the drainage tube are all made of existing transparent soft infusion tubes.

7. A three-chamber nutrition bag injection connector according to claim 1, characterized in that: The infusion-flow regulator adopts the flow regulator provided on the existing disposable infusion set.

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