An enteral administration device
By introducing temperature control and balloon sealing technology into the intestinal drug delivery device, the problems of drug irritation and leakage have been solved, achieving the appropriate temperature and closed delivery process for the drug, thus improving the therapeutic effect and patient comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING BAIHE MEDICAL EQUIP
- Filing Date
- 2025-02-21
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional enteral drug delivery methods are difficult to control the temperature of the drug solution, which can easily irritate the intestinal wall and cause the drug solution to leak out, leading to discomfort and poor treatment effect.
The syringe, equipped with a thermistor and heating element, combined with a microprocessor and control panel, enables drug temperature control and creates a sealed environment by inflating an air bladder to prevent drug leakage.
It effectively regulates the temperature of the medication, prevents intestinal irritation, and prevents leakage of the medication solution, ensuring therapeutic efficacy and patient comfort.
Smart Images
Figure CN224370431U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to an intestinal drug delivery device. Background Technology
[0002] Enteral administration, as a unique route of drug delivery in clinical treatment, is of paramount importance. This method precisely delivers liquid medication into the intestines through the anus. Utilizing the highly efficient absorption properties of the rectal mucosa, the drug rapidly enters the systemic circulation, exerting its therapeutic effect and treating systemic or localized diseases. This route is particularly suitable for patients who, for various reasons, cannot take oral medication or require rapid onset of action, such as comatose patients, patients experiencing frequent vomiting, and infants. However, in traditional enteral administration practices, temperature control of the medication solution has always been a challenging issue. Because the medication solution is generally cold, direct administration often irritates the intestinal lining, causing significant discomfort to the patient. Discomfort, and even pain, can affect drug absorption efficiency and overall treatment efficacy. Therefore, in practice, doctors need to be extremely cautious and spend a lot of time and energy to ensure that the temperature of the medication is appropriate to avoid causing unnecessary harm to the patient. In addition to the issue of medication temperature, traditional enteral administration also faces the challenge of easy leakage of medication. Because the intestinal wall is moist and elastic, when the medication is injected, it is easy to flow out along the intestinal wall. This not only leads to inaccurate drug dosage, but may also stain the patient's clothes or bed sheets, causing unnecessary trouble and embarrassment during the treatment process. More importantly, the leakage of medication will directly affect the absorption and distribution of the drug, thereby weakening the treatment effect and prolonging the patient's recovery period. Utility Model Content
[0003] To address the above problems, the purpose of this invention is to provide an intestinal drug delivery device that solves the problems of cold drug solutions easily irritating the intestinal lining membrane, and drug solutions easily leaking outwards, leading to inaccurate drug dosage and contamination.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: an intestinal drug delivery device, comprising a syringe and a drug delivery tube. A piston is disposed within the inner cavity of the syringe, and the piston is connected to an external push handle via a push rod. A thermistor and a heating element are disposed within the internal interlayer of the syringe for monitoring and controlling the drug temperature. A housing is disposed on the syringe, and a microprocessor and a lithium battery are integrated inside the housing for centralized control and power supply. An operation panel and a charging port are disposed at the outer end of the housing. A needle hub is screwed onto the tip of the syringe, and a needle hub is provided on the needle hub. The syringe has a spring-loaded locking block and a needle body. The injection tube is equipped with an injection connector, an air supply tube, a first air bladder, and a second air bladder, and has several drug outlet holes. The injection connector is equipped with a locking hole that cooperates with the spring-loaded locking block for the combined connection of the syringe and the injection tube. The inner end of the injection tube is divided into an injection chamber, a first air supply chamber, and a second air supply chamber. The injection chamber is connected to the injection connector. One end of the first air supply chamber and the second air supply chamber are connected to the first air bladder and the second air bladder, respectively, and the other end of each is connected to the air supply tube. The air supply tube is equipped with an inflation connector.
[0005] The beneficial effects of this invention are as follows: When in use, this invention can not only heat the medicine to prevent it from being too cold and easily irritating the intestines, causing discomfort to the patient, but also, when administering medication into the intestines, the expansion of the first and second air bladders can effectively prevent the injection tube from falling out and block the medicine from leaking out, thus ensuring the therapeutic effect.
[0006] To facilitate heating of the medicine:
[0007] As a further improvement to the above technical solution: the operation panel serves as a human-machine interface and is connected to the microprocessor via signal lines for inputting control commands and displaying the working status. The microprocessor is connected to the thermistor and the heating element via wires for controlling the heating power of the heating element based on the temperature data measured by the thermistor.
[0008] The beneficial effects of this improvement are as follows: after setting the heating temperature by pressing the operation button on the operation panel, the microprocessor can control the heating power of the heating element according to the temperature data measured by the thermistor, thereby adjusting the temperature of the drug in the syringe cavity to prevent the drug from being too cold and easily irritating the intestines during administration, causing discomfort to the patient.
[0009] For ease of charging and power supply:
[0010] As a further improvement to the above technical solution: the charging port charges the lithium battery by connecting to an external power source, which facilitates the lithium battery to power the thermistor, heating element, microprocessor and operation panel.
[0011] The beneficial effects of this improvement are: by setting up a charging port, it is possible to charge the lithium battery after connecting to an external power source, and by setting up the lithium battery, it is possible to supply power to various electrical components.
[0012] To facilitate the installation and removal of the syringe and injection tubing, and to increase the sealing of the connection:
[0013] As a further improvement to the above technical solution: spring blocks are provided on both sides of the needle seat, and locking holes are provided on both sides of the drug injection connector located at the end of the injection tube, and a sealing gasket is provided at the inner end of the drug injection connector.
[0014] The beneficial effects of this improvement are as follows: after the needle hub is installed in the injection connector, the spring clip and the locking hole are connected to fix the position of the needle hub, thereby completing the combined connection operation of the syringe and the injection tube. Similarly, when the spring clip is pressed inward and separated from the locking hole, the syringe and the injection tube can be separated. The sealing gasket at the inner end of the needle hub can increase the sealing performance when the injection connector and the needle hub are connected.
[0015] To facilitate the entry of medication into the patient's intestines:
[0016] As a further improvement to the above technical solution: several of the drug outlet holes are equidistantly opened at the head end of the drug injection tube.
[0017] The beneficial effect of this improvement is that by opening several drug outlet holes at the tip of the injection tube, it is easier for the drug to enter the patient's intestines during the indwelling period of the injection tube.
[0018] To facilitate simultaneous or separate inflation and deflation of the first and second airbags:
[0019] As a further improvement to the above technical solution: the gas supply pipe is Y-shaped, and the inflation connector is located at the main end of the gas supply pipe, which is used to connect an external inflation device to inflate the first airbag and the second airbag, while the outer ends of the two branches of the gas supply pipe are fitted with pipe clamps.
[0020] The beneficial effects of this improvement are as follows: by connecting the external inflation device to the inflation connector, gas can be inflated into the first and second airbags, so that after the airbags expand, they adhere tightly to the intestinal wall, forming a relatively closed environment. This not only prevents the injection tube from coming out, but also makes it difficult for the drug to seep out through gaps during administration due to the close contact between the airbags and the intestinal wall. By setting up separate clamps at the outer ends of the two branches of the gas delivery tube, the two branch passages can be opened and closed independently, so as to realize the simultaneous or separate inflation and deflation of the first and second airbags.
[0021] To facilitate the reading of drug dosage and insertion depth:
[0022] As a further improvement to the above technical solution: the outer wall of the syringe is printed with a scale line one, while the outer wall of the injection tube is printed with a scale line two.
[0023] The beneficial effects of this improvement are: the establishment of scale line one makes it easier for medical staff to read the amount of medication, and the establishment of scale line two makes it easier for medical staff to read the depth of the intubation.
[0024] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2 This is a schematic diagram of the syringe structure of this utility model;
[0027] Figure 3 This is a schematic diagram of the injection tube structure of this utility model;
[0028] Figure 4 This is a schematic diagram of the internal structure of the syringe of this utility model;
[0029] Figure 5 This is a schematic diagram of the internal structure of the injection tube of this utility model;
[0030] In the diagram: 1. Syringe; 2. Injection tube; 3. Piston; 4. Push rod; 5. Push handle; 6. Heating element; 7. Housing; 8. Microprocessor; 9. Lithium battery; 10. Control panel; 11. Charging port; 12. Scale line one; 13. Needle seat; 14. Spring catch; 15. Needle body; 16. Injection connector; 17. Gas delivery tube; 18. First air bladder; 19. Second air bladder; 20. Dispensing hole; 21. Locking hole; 22. Sealing gasket; 23. Injection chamber; 24. First gas delivery chamber; 25. Second gas delivery chamber; 26. Tube clamp; 27. Inflation connector; 28. Scale line two. Detailed Implementation
[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.
[0032] like Figure 1-5As shown, an intestinal drug delivery device includes a syringe 1 and a drug delivery tube 2. The syringe 1 has a piston 3 inside, and the piston 3 is connected to an external push handle 5 via a push rod 4. A thermistor and a heating element 6 (which can be any type of electric heating device such as an electric heating film or heating wire) are disposed in the internal interlayer of the syringe 1 for monitoring and controlling the drug temperature. The syringe 1 has a housing 7, which integrates a microprocessor 8 and a lithium battery 9 for centralized control and power supply. An operation panel 10 and a charging port 11 are provided at the outer end of the housing 7. A needle seat 13 is screwed onto the tip of the syringe 1, and a spring retainer 14 and a needle body 15 are disposed on the needle seat 13. The drug delivery tube 2 is provided with a drug delivery connector 16 and an infusion tube 17. The device comprises a trachea 17, a first air bladder 18, and a second air bladder 19, with several drug dispensing holes 20. The drug dispensing connector 16 has a locking hole 21 that engages with a spring-loaded locking block 14 for connecting the syringe 1 and the drug dispensing tube 2. The inner end of the drug dispensing tube 2 is divided into a drug dispensing chamber 23, a first air delivery chamber 24, and a second air delivery chamber 25. The drug dispensing chamber 23 is connected to the drug dispensing connector 16. One end of the first air delivery chamber 24 and the second air delivery chamber 25 are connected to the first air bladder 18 and the second air bladder 19, respectively, while the other end is connected to the air delivery tube 17. The air delivery tube 17 has an inflation connector 27. This device, when in use, not only warms the medication to prevent it from being too cold and irritating the intestines, thus avoiding discomfort for the patient, but also… During intestinal drug administration, the expansion of the first air bladder 18 and the second air bladder 19 effectively prevents the injection tube 2 from dislodging and blocks drug leakage, ensuring therapeutic efficacy. The operation panel 10 serves as a human-machine interface, connected to the microprocessor 8 via signal lines for inputting control commands and displaying operating status. The microprocessor 8 is connected to a thermistor and heating element 6 via wires, controlling the heating power of the heating element 6 based on temperature data measured by the thermistor. After setting the heating temperature by pressing the operation buttons on the operation panel 10, the microprocessor 8 can control the heating power of the heating element 6 based on the temperature data measured by the thermistor, thereby adjusting the temperature of the drug inside the syringe 1 to prevent the drug from becoming too cold. The charging port 11, which can easily irritate the intestines and cause discomfort to patients during drug administration, connects to an external power source to charge the lithium battery 9. This allows the lithium battery 9 to power the thermistor, heating element 6, microprocessor 8, and operation panel 10. The charging port 11 enables the lithium battery 9 to be charged after connecting to an external power source, thus powering the various electrical components. The needle holder 13 has spring-loaded latches 14 on both sides, while the injection connector 16 at the end of the injection tube 2 has locking holes 21 on both sides. The inner end of the injection connector 16 has a sealing gasket 22. By installing the needle holder 13 into the injection connector 16, the spring-loaded latches 14 engage with the locking holes 21 to fix the position of the needle holder 13.This completes the combined connection operation of syringe 1 and injection tube 2. Similarly, by reversing the operation and pressing the spring clip 14 to move inward and separate it from the clip hole 21, syringe 1 and injection tube 2 can be separated. The sealing gasket 22 at the inner end of needle seat 13 increases the sealing performance when injection connector 16 is connected to needle seat 13. Several drug outlet holes 20 are equidistantly located at the head end of injection tube 2. These holes facilitate drug entry into the patient's intestines during the indwelling period of injection tube 2. The gas delivery tube 17 is Y-shaped, and the inflation connector 27 is located at the main end of the gas delivery tube 17. It is used to connect an external inflation device to inflate the first airbag 18 and the second airbag 19. Both branches of the gas delivery tube 17 are fitted with tube clamps 26. After connecting the external inflation device to the inflation connector 27... The syringe 1 can inflate the first air bladder 18 and the second air bladder 19, causing them to expand and adhere tightly to the intestinal wall, forming a relatively closed environment. This prevents the injection tube 2 from dislodging and, due to the close contact between the air bladder and the intestinal wall, makes it difficult for the drug to leak out through gaps during administration. The two branch clamps 26 on the outer ends of the gas delivery tube 17 allow for independent opening and closing of the two branch pathways, enabling simultaneous or separate inflation and deflation of the first air bladder 18 and the second air bladder 19. The syringe 1 has a graduation line 12 printed on its outer wall, while the injection tube 2 has a graduation line 28 printed on its outer wall. The graduation line 12 facilitates the reading of the drug dosage by medical personnel, and the graduation line 28 facilitates the reading of the insertion depth.
[0033] The working principle of this utility model is as follows: When the operation button on the operation panel 10 is pressed to set the desired drug heating temperature, the microprocessor 8 controls the heating power of the heating element 6 according to the drug temperature data measured by the thermistor in the syringe 1, thereby adjusting the drug to a suitable temperature and avoiding the drug being too cold and irritating the intestines. In use, the syringe 1 and the injection tube 2 are connected by the spring clip 14 and the locking hole 21 to complete the assembly operation. When the injection tube 2 is inserted into the patient's intestine through the anus to an appropriate depth, the external inflation device inflates the first airbag 1 through the inflation connector 27. Inflating the first airbag 18 and the second airbag 19 allows the airbags to expand and adhere tightly to the intestinal wall, thus forming a closed environment to prevent the injection tube 2 from dislodging and to block the drug from leaking out. Furthermore, the separate installation of the two branch end clamps 26 of the gas delivery tube 17 allows for the independent opening and closing of the two branch passages, enabling simultaneous or separate inflation and deflation of the first airbag 18 and the second airbag 19 as needed. When medical personnel push the push handle 5, the piston 3 moves through the push rod 4 within the syringe 1 cavity, allowing the drug to be injected into the intestine through the injection chamber 23 and the outlet port 20.
[0034] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of this utility model to other occasions without modification, should all be considered within the protection scope of this utility model.
Claims
1. An intestinal drug delivery device, comprising a syringe (1) and a drug delivery tube (2), wherein a piston (3) is disposed in the inner cavity of the syringe (1), and the piston (3) is connected to a push handle (5) located externally via a push rod (4), characterized in that: The syringe (1) has a thermistor and a heating element (6) in its internal interlayer for monitoring and controlling the drug temperature. The syringe (1) has a housing (7) with a microprocessor (8) and a lithium battery (9) integrated inside for centralized control and power supply. The outer end of the housing (7) has an operation panel (10) and a charging port (11). The syringe (1) has a needle seat (13) screwed onto its nipple end. The needle seat (13) has a spring clip (14) and a needle body (15). The injection tube (2) has an injection connector (16), an air delivery tube (17), a first air bladder (18), and a second air bladder (19). The syringe (1) is provided with several dispensing holes (20), and the dispensing connector (16) is provided with a locking hole (21). The locking hole (21) is connected to the spring locking block (14) for the combined connection of the syringe (1) and the dispensing tube (2). The inner end of the dispensing tube (2) is divided into a dispensing chamber (23), a first air supply chamber (24) and a second air supply chamber (25). The dispensing chamber (23) is connected to the dispensing connector (16). One end of the first air supply chamber (24) and the second air supply chamber (25) are connected to the first air bag (18) and the second air bag (19) respectively, and the other end is connected to the air supply tube (17). The air supply tube (17) is provided with an inflation connector (27).
2. An enteral administration device according to claim 1, characterized in that The operation panel (10) serves as a human-machine interface and is connected to the microprocessor (8) via a signal line. It is used to input control commands and display the working status. The microprocessor (8) is connected to the thermistor and the heating element (6) via wires and is used to control the heating power of the heating element (6) based on the temperature data measured by the thermistor.
3. An enteral administration device according to claim 1, characterized in that: The charging port (11) charges the lithium battery (9) by connecting to an external power source, so that the lithium battery (9) can supply power to the thermistor, heating element (6), microprocessor (8) and operation panel (10).
4. An enteral feeding device according to claim 1, wherein: Spring clips (14) are provided on both sides of the needle seat (13), and clip holes (21) are provided on both sides of the injection connector (16) located at the end of the injection tube (2), and a sealing gasket (22) is provided inside the injection connector (16).
5. An enteral feeding device according to claim 1, wherein: Several of the aforementioned drug outlet holes (20) are equidistantly located at the head end of the drug injection tube (2).
6. An enteral administration device according to claim 1, characterized in that: The gas supply pipe (17) is Y-shaped, and the inflation connector (27) is located at the main end of the gas supply pipe (17) for connecting to an external inflation device to inflate the first airbag (18) and the second airbag (19). The outer ends of the two branches of the gas supply pipe (17) are fitted with pipe clamps (26).
7. An intestinal drug delivery device according to claim 1, characterized in that: The syringe (1) has a scale line 1 (12) printed on its outer wall, while the injection tube (2) has a scale line 2 (28) printed on its outer wall.