Nasal feeding syringe

Abstract

The utility model belongs to the technical field of injectors, and particularly relates to a nasal feeding injector. The nasal feeding syringe comprises a syringe tube body, a pushing and injecting assembly and a liquid medicine bag. The injector tube body comprises a push injection cavity, a connecting tube, a mounting piece and a medicine adding tube, a first switch valve is arranged on the connecting tube, and a second switch valve is arranged on the medicine adding tube; the injection assembly comprises a piston rod arranged in the injection cavity, a movable push rod and a fixed push rod, wherein the movable push rod and the fixed push rod are arranged on the injector tube body and hinged to each other. When a nurse performs nasal feeding, the first switch valve is closed, the second switch valve is opened, the liquid medicine bag and the medicine adding pipe are connected, at the moment, the nasal feeding injector is in a suction state, and the nurse rotates the movable push rod in the direction away from the fixed push rod, so that the piston rod is driven to move towards the rear end of the injection cavity; therefore, the nutrient solution or the medicine in the liquid medicine bag enters the push injection cavity through the medicine adding pipe, the suction process is easy to operate, labor is saved, and nursing staff can conveniently suck the semi-fluid nutrient solution with the high concentration.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of syringe, specifically relates to a nasal feeding syringe. BACKGROUND

[0002] At present, the nasal feeding needle tube used in hospital is generally 50ml injection needle tube, and the maximum total amount of suction is only 60ml, so the dosage of a patient needs to be repeatedly sucked many times, which not only consumes the time of nurses, but also wastes the physical strength of nurses, and it is very difficult to suck the high-concentration nutrient solution, and the physical strength consumed by the ordinary 50ml syringe is huge when sucking, and nurses need to use great force to push the syringe, and continuous strong pushing can even cause the swelling of the hands of nurses, which is very inconvenient for medical care. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the defects of prior art, and provides a nasal feeding syringe which is simple in structure and convenient for sucking high-concentration semi-liquid nutrient solution.

[0004] The utility model adopts the following technical scheme:

[0005] A nasal feeding syringe, comprising a syringe pipe body, a push injection assembly and a medicine liquid bag;

[0006] The syringe pipe body comprises a push injection cavity formed in the inside of the syringe pipe body, a connecting pipe arranged at the front end of the syringe pipe body and communicating with the push injection cavity and the nasal feeding pipe, a mounting piece arranged on the syringe pipe body and used for mounting the medicine liquid bag, and a medicine adding pipe arranged on the syringe pipe body and connecting the medicine liquid bag and the push injection cavity, a first on-off valve is arranged on the connecting pipe, and a second on-off valve is arranged on the medicine adding pipe;

[0007] The push injection assembly is arranged on the syringe pipe body and comprises a piston rod arranged in the push injection cavity and movable back and forth along the length direction of the push injection cavity, and a movable push rod and a fixed push rod which are arranged on the syringe pipe body and hingedly connected to each other, the movable push rod is movably connected to the piston rod and can drive the piston rod to move back and forth along the length direction of the push injection cavity, and the fixed push rod is fixedly arranged at the rear end of the syringe pipe body;

[0008] The medicine liquid bag is used for containing nutrient solution or medicine.

[0009] Further, the mounting piece comprises an arc-shaped mounting groove arranged at the top of the syringe pipe body and a fixed elastic band arranged on the arc-shaped mounting groove and used for fixing the medicine liquid bag.

[0010] Further, the first on-off valve comprises a check ball arranged in the connecting pipe, a liquid inlet channel arranged on the check ball and communicating with the push injection cavity, and a valve rod arranged on the outside of the connecting pipe and connected with the check ball and capable of driving the check ball to rotate.

[0011] Further, one end of the medicine adding pipe is provided with a connecting joint connected with the medicine liquid bag.

[0012] Further, the movable push rod comprises a groove formed inward from one side thereof opposite to the piston rod and a limiting slot provided on the inner wall of the groove for the piston rod to enter.

[0013] Further, the push injection assembly further comprises a movable piece provided between the movable push rod and the piston rod, the movable piece comprises two sliding grooves provided on the two side walls of the limiting slot in opposition and a rotating rod connected between the two sliding grooves and the piston rod, when the movable push rod rotates towards the direction close to the fixed push rod, the rotating rod moves downward in the sliding groove, and the piston rod moves towards the front end of the push injection cavity.

[0014] Further, the movable push rod and the fixed push rod are provided in opposition and are both arc-shaped to adapt to the hand holding posture.

[0015] Further, the fixed push rod comprises a holding section and an extension section formed upward from the top of the holding section, and the lower end of the holding section is hingedly connected with the lower end of the movable push rod.

[0016] From the above description of the present application, compared with the prior art, the beneficial effects of the present application are as follows: through the cooperation between the syringe pipe body, the push injection assembly provided on the syringe pipe body and the medicine liquid bag, when the nursing staff performs nasal feeding, the first switch valve is closed, the second switch valve is opened, and the medicine liquid bag and the medicine adding pipe are connected, at this time, the nasal feeding syringe is in the suction state, the nursing staff rotates the movable push rod away from the fixed push rod, thereby driving the piston rod to move towards the rear end of the push injection cavity, and then the nutrient solution or the medicine in the medicine liquid bag is introduced into the push injection cavity through the medicine adding pipe, so that the operation in the suction process is simple and labor-saving, and it is convenient for the nursing staff to suck the semi-liquid nutrient solution with high concentration; after the suction is completed, the first switch valve is opened, the second switch valve is closed, and the nursing staff rotates the movable push rod towards the fixed push rod, thereby driving the piston rod to move towards the front end of the push injection cavity, and then the nutrient solution or the medicine in the medicine liquid bag is injected into the nasal feeding tube; at the same time, the nasal feeding syringe is limited to be a disposable device, the size of the medicine liquid bag is adapted to the nasal feeding syringe, in use, the prepared nasal feeding nutrient solution is added into one or more medicine liquid bags, and then the medicine liquid bag is connected with the syringe pipe body, so that the amount of liquid injected into the patient each time for nasal feeding can be controlled, and each time for nasal feeding, a new nasal feeding syringe is replaced, so that the possibility of cross infection can be maximally avoided, and this is beneficial to the safety of the medical staff and the patient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the nasal feeding syringe.

[0018] Figure 2This is a schematic diagram of the exploded structure of a nasogastric feeding syringe.

[0019] Figure 3 Schematic diagram of the internal structure of a nasogastric feeding syringe Figure 1 .

[0020] Figure 4 Schematic diagram of the internal structure of a nasogastric feeding syringe Figure 2 .

[0021] Figure 5 This is a schematic diagram of the installation of the medicine bag.

[0022] In the diagram: 1-syringe body, 11-injection chamber, 12-connecting tube, 13-installation component, 14-medication tube, 15-first switch valve, 151-check valve ball, 152-inlet channel, 153-valve stem, 16-second switch valve, 17-arc-shaped mounting groove, 18-fixing elastic band, 19-connecting connector, 2-injection assembly, 21-piston rod, 22-movable push rod, 23-fixed push rod, 231-grip section, 232-extension section, 24-moving component, 25-slide groove, 26-rotating rod, 27-groove, 28-limiting groove, 3-medication bag. Detailed Implementation

[0023] The present invention will be further described below through specific embodiments.

[0024] like Figures 1 to 5 As shown, this embodiment provides a nasogastric feeding syringe connected to a nasogastric tube, including a syringe tube body 1, an injection component 2, and a medication bag 3; this nasogastric feeding syringe is limited to disposable use, and a new nasogastric feeding syringe is replaced each time nasogastric feeding is performed, which can minimize the possibility of cross-infection and is beneficial to the safety of medical staff and patients.

[0025] The syringe body 1 includes an injection chamber 11 formed inside the syringe body 1, a connecting tube 12 disposed at the front end of the syringe body 1 connecting the injection chamber 11 to a nasogastric tube, an mounting component 13 disposed on the syringe body 1 for mounting a medication bag 3, and a medication delivery tube 14 disposed on the syringe body 1 connecting the medication bag 3 to the injection chamber 11. A first switching valve 15 is disposed on the connecting tube 12, and a second switching valve 16 is disposed on the medication delivery tube 14. Both the connecting tube 12 and the medication delivery tube 14 are flexible tubes. When the nasogastric syringe is in a suction state, the first switching valve 15 is closed and the second switching valve 16 is open. When the nasogastric syringe is used for nasal feeding, the first switching valve 15 is open and the second switching valve 16 is closed. Specifically, the mounting component 13 includes an arc-shaped mounting groove 17 disposed at the top of the syringe body 1 and a mounting groove 18 disposed at the top end of the syringe body 1. 7. A fixing elastic band 18 is used to fix the medicine bag 3. The medicine bag 3 is stably fixed inside the medicine bag by the cooperation between the arc-shaped mounting groove 17 and the fixing elastic band 18. Furthermore, the first switch valve 15 includes a check ball 151 set in the connecting pipe 12, an inlet channel 152 set on the check ball 151 that can communicate with the injection chamber 11, and a valve stem 153 set outside the connecting pipe 12 and connected to the check ball 151 that can drive the check ball 151 to rotate. When the nasal feeding syringe completes aspiration, the valve stem 153 rotates the check ball 151 to connect the inlet channel 152 with the connecting pipe 12, thereby opening the first switch valve, connecting the injection chamber 11 with the nasal feeding tube, and then injecting the nutrient solution in the injection chamber 11 into the nasal feeding tube. Furthermore, one end of the drug delivery tube 14 is provided with a connecting joint 19 that connects to the medicine bag 3.

[0026] The second switching valve 16 is the same as the first switching valve 15. Its cooperation with the dosing pipe 14 is the same as the cooperation between the first switching valve 15 and the connecting pipe 12. Its specific structure will not be described further here.

[0027] The injection assembly 2, mounted on the syringe body 1, includes a piston rod 21 that moves back and forth along the length of the injection cavity 11 within the injection chamber 11, and a movable push rod 22 and a fixed push rod 23 hinged together on the syringe body 1. The movable push rod 22 is movably connected to the piston rod 21, allowing the piston rod 21 to move back and forth along the length of the injection chamber 11. The fixed push rod 23 is fixedly mounted at the rear end of the syringe body 1. Through the cooperation between the piston rod 21, the movable push rod 22, and the fixed push rod 23, nursing staff can inject the nutrient solution from the medication bag into the injection chamber 11 and inject the nutrient solution from the injection chamber 11 into the nasogastric tube with less effort. Specifically, the movable push rod 22 includes a groove 27 formed from one side inwards opposite to the piston rod 21 and a limiting groove 28 on the inner wall of the groove 27 for the piston rod 21 to enter. Furthermore, the injection assembly 2 also includes a movable push rod 22 and a fixed push rod 23 hinged together on the syringe body 1. The movable component 24 between the movable push rod 22 and the piston rod 21 includes two sliding grooves 25 disposed opposite to each other on the side walls of the limiting groove 28 and a rotating rod 26 connecting the two sliding grooves 25 and the piston rod 21. When the movable push rod 22 rotates toward the fixed push rod 23, the rotating rod 26 moves downward along its length within the two sliding grooves 25, and the piston rod 21 moves toward the front end of the syringe tube 1. Furthermore, the movable push rod 22 and the fixed push rod 23 are disposed opposite to each other and are both arc-shaped to fit the hand grip posture. Furthermore, the fixed push rod 23 includes a grip section 231 and an extension section 232 extending upward from the top of the grip section 231. The lower end of the grip section 231 is hinged to the lower end of the movable push rod 22. The extension section 232 allows the caregiver to hold the fixed push rod 23 with one hand and rotate the movable push rod 21 away from the fixed push rod 23 with the other hand, making the operation simple and effortless.

[0028] Medication bag 3 is used to hold nutrient solution or medicine, and one or more can be set; the amount of liquid injected into the patient's nose each time can be controlled through medication bag 3; specifically, the size of medication bag 3 is adapted to the size of the arc-shaped mounting groove.

[0029] The specific operational procedures for this application are as follows:

[0030] When the nasogastric feeding syringe is in the aspiration state, the piston rod 21 of the nasogastric feeding syringe is at the front end of the syringe tube 1. The nurse first fixes the medicine bag 3 filled with nutrient solution in the arc-shaped mounting groove 18 with the fixing elastic band 18, and connects the medicine bag 3 to the drug delivery tube 14 through the connecting connector 19. Then, the second switch valve 16 is opened and the first switch valve 15 is closed. At this time, the nurse holds the extension section 232 with one hand and rotates the movable push rod 22 away from the fixed push rod 23 with the other hand. The rotating rod 26 moves upward along its length in the two sliding grooves 25, thereby driving the piston rod 21 to move to the rear end of the injection chamber 11, so as to realize that the nutrient solution in the medicine bag 3 enters the injection chamber 11 through the drug delivery tube 14. The whole aspiration process is simple to operate and relatively labor-saving, making it convenient for nurses to aspirate semi-liquid nutrient solutions with high concentration.

[0031] When using a nasogastric feeding syringe for nasogastric feeding, the second switch valve 16 is closed and the first switch valve 15 is opened. At this time, the nursing staff can hold the movable push rod 22 and the fixed push rod 23 with one or both hands and rotate the movable push rod 22 towards the fixed push rod 23. The rotating rod 26 moves downward along its length in the two sliding grooves 25, thereby driving the piston rod 21 to move towards the front end of the injection chamber 11. This allows the nutrient solution in the injection chamber 11 to enter the nasogastric tube through the connecting tube 12 and the inlet channel 152, thus enabling nasogastric feeding to the patient.

[0032] In summary, by utilizing the above-mentioned technical solution of this utility model, this application achieves a simple and labor-saving aspiration process through the cooperation between the syringe tube 1, the injection component 2 set on the syringe tube 1, and the medication bag 3, making it convenient for nursing staff to aspirate semi-liquid nutritional solutions with higher concentrations. In addition, by limiting the nasogastric feeding syringe to disposable items, a new nasogastric feeding syringe is replaced each time, which can minimize the possibility of cross-infection and is beneficial to the safety of medical staff and patients. Furthermore, by setting one or more medication bags 3, the amount of liquid injected into the patient's nasogastric tube each time can be controlled. In addition, the extension section 232 allows nursing staff to hold the fixed push rod 23 with one hand and rotate the movable push rod 22 away from the fixed push rod 23 with the other hand, making the operation simple and labor-saving.

[0033] The above description is merely a preferred embodiment of the present utility model, and therefore cannot be construed as limiting the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model application and the contents of the specification should still fall within the scope of the present utility model application.

Claims

1. A nasogastric syringe for connection to a nasogastric tube, characterised in that: The injection device comprises a syringe tube, a bolus injection assembly and a medicine bag. The syringe tube comprises a bolus injection cavity formed in the syringe tube, a connecting tube arranged at the front end of the syringe tube and communicating with the bolus injection cavity and a nasal feeding tube, a mounting member arranged on the syringe tube for mounting the medicine bag and a medicine adding tube arranged on the syringe tube and connecting the medicine bag with the bolus injection cavity, wherein the connecting tube is provided with a first on-off valve and the medicine adding tube is provided with a second on-off valve. The bolus injection assembly is arranged on the syringe tube and comprises a piston rod arranged in the bolus injection cavity and movable back and forth along the length direction of the bolus injection cavity and a movable push rod and a fixed push rod arranged on the syringe tube and hinged to each other, wherein the movable push rod is hingedly connected with the piston rod and can drive the piston rod to move back and forth along the length direction of the bolus injection cavity, and the fixed push rod is fixedly arranged at the rear end of the syringe tube. The medicine bag is used for containing nutrient solution or medicine.

2. A nasogastric syringe according to claim 1, wherein: The mounting member comprises an arc-shaped mounting groove arranged at the top of the syringe tube and a fixing elastic band arranged on the arc-shaped mounting groove for fixing the medicine bag.

3. A nasogastric syringe according to claim 1, wherein: The first on-off valve comprises a check ball arranged in the connecting tube, a liquid inlet channel arranged on the check ball and communicating with the bolus injection cavity and a valve rod arranged outside the connecting tube and connected with the check ball and capable of driving the check ball to rotate.

4. A nasogastric syringe according to claim 1, wherein: One end of the medicine adding tube is provided with a connecting joint connected with the medicine bag.

5. A nasogastric syringe according to claim 1, wherein: The movable push rod comprises a recess formed inward from one side of the movable push rod and opposite to the piston rod and a limiting groove arranged in the inner wall of the recess and accessible by the piston rod.

6. A nasogastric syringe according to claim 5, wherein: The bolus injection assembly further comprises a movable member arranged between the movable push rod and the piston rod, wherein the movable member comprises two sliding grooves arranged on the two side walls of the limiting groove and a rotating rod connected between the two sliding grooves and the piston rod, when the movable push rod rotates towards the fixed push rod, the rotating rod moves downward in the sliding groove and the piston rod moves towards the front end of the bolus injection cavity.

7. A nasogastric syringe according to claim 1, wherein: The movable push rod and the fixed push rod are arranged opposite to each other and both are arc-shaped and suitable for hand holding posture.

8. A nasogastric syringe according to claim 1, wherein: The fixed push rod comprises a holding section and an extension section formed upward from the top of the holding section, and the lower end of the holding section is hingedly connected with the lower end of the movable push rod.

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