Nutrient solution constant-temperature heating device

Abstract

The utility model discloses a nutrient solution constant-temperature heating device, relates to the technical field of medical instruments, and solves the technical problems that when sterile water or a nutrient solution is respectively heated by an existing enteral nutrient solution constant-temperature heating device, the nutrient solution is in direct contact with a passage in the device, and the type of the nutrient solution used by the device is difficult to directly replace subsequently. Through a heating column, a connecting column provided with a through groove and a sealing column, the indwelling tube, the infusion tube and the flushing tube which pass through the through groove can be heated in the through groove, and then it can be guaranteed that the body temperature of liquid entering the indwelling tube is close to the normal body temperature; a driving gear capable of promoting the driving teeth to slide is arranged in the sealing column, rotation of the driving gear can promote the infusion tube to slide along a specific track, the infusion tube and the indwelling tube are directly connected, when the nutrient solution is conveyed, the infusion tube and the indwelling tube are communicated, and the nutrient solution can be heated while not making contact with the penetrating groove; the device can use different types of nutrient solutions at a time.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices and relates to heating technology, specifically a constant temperature heating device for nutrient solution. Background Technology

[0002] Enteral nutrition is a nutritional preparation with relatively complete nutritional components. It provides various nutrients to patients through the gastrointestinal tract via oral or tube feeding, providing patients with essential nutrients and energy. Before use, enteral nutrition solutions need to be heated to a temperature close to normal body temperature using a constant temperature heating device to reduce gastrointestinal adverse reactions.

[0003] The reference patent is titled "A Constant Temperature Heating Device for Enteral Nutrition Solution" (Patent Publication No.: CN221763813U). It flushes the indwelling tube by introducing sterile water that does not come into contact with air, thus avoiding the possibility of contamination of the flushing water. Secondly, considering that the temperature of both sterile water and nutrient solution may be too low in winter, a heatable three-way valve is used. By heating the three-way valve, the sterile water or nutrient solution passing through the internal pipeline of the three-way valve is directly heated.

[0004] However, the following problems exist when implementing the above technical solutions: In the above devices, sterile water or nutrient solution flows directly into the three-way valve, and the sterile water or nutrient solution comes into direct contact with the internal passage of the three-way valve. As a result, when a certain type of nutrient solution is used directly through the above devices, the current devices can only continue to infuse that type of nutrient solution for a short period of time. When it is necessary to change the type of nutrient solution used by the devices, the entire three-way valve needs to be disinfected or replaced. The internal passage of the three-way valve is relatively small and long, making it difficult to clean quickly and completely. Moreover, the size and material requirements of the three-way valve are relatively strict when replacing it, resulting in higher operating costs.

[0005] Therefore, this utility model proposes a constant temperature heating device for nutrient solution. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a nutrient solution constant temperature heating device, which solves the problem that in existing enteral nutrition solution constant temperature heating devices, when sterile water or nutrient solution is heated separately, the nutrient solution directly contacts the internal passage of the device, making it difficult to directly change the type of nutrient solution used in the device subsequently.

[0007] To achieve the above objectives, a nutrient solution constant temperature heating device is provided according to an embodiment of the first aspect of this utility model, comprising:

[0008] The heating column, connecting column, and sealing column are provided. The heating column is electrically connected to an external power source. The heating column and the connecting column are detachably connected. The connecting column and the sealing column are detachably connected.

[0009] Two through slots are formed on the opposite sides of the connecting column and the sealing column. The cross-section of the through slots is T-shaped. An indwelling tube, an infusion tube, and a flushing tube are detachably connected inside the through slots. A heat-conducting layer is provided on the opposite sides of the two through slots. A connecting assembly is provided between the sealing column and the infusion tube.

[0010] The connecting assembly includes a drive gear rotatably disposed inside the sealing column, a plurality of driving teeth are fixedly connected to the surface of the infusion tube, the driving teeth mesh with the drive gear, and a sealing rod is slidably connected inside the connecting column, the width of the sealing rod being greater than the width of the driving teeth, and the sealing rod contacting the driven teeth.

[0011] Optionally, a one-way block is rotatably connected inside the connecting column. The length of the one-way block is greater than the diameter of the through groove, and the end of the one-way block contacts one side of the horizontal position of the through groove. The distance between the one-way block and the infusion tube is less than the distance between the one-way block and the flushing tube.

[0012] Optionally, a rotating rod is fixedly connected inside the one-way block, and a ring spring is fixedly connected between the rotating rod and the connecting column. When the ring spring is in its natural state, the one-way block fits into the through groove.

[0013] Optionally, a blocking block is slidably connected inside the sealing column, and the width of the blocking block is the same as the diameter of the through groove.

[0014] Optionally, the cross-section of the blocking block is D-shaped, and the distance between the blocking block and the flushing tube is less than the distance between the blocking block and the infusion tube.

[0015] Optionally, a marker post is rotatably connected to the side of the sealing post away from the connecting post, and the marker post is fixedly connected to the drive gear.

[0016] Optionally, two marker shafts are fixedly connected to the surface of the sealing column, the marker column is in contact with the marker shafts, and the line connecting the center of the two marker shafts and the center of the marker column forms a 90-degree angle.

[0017] Optionally, a connecting belt is fixedly connected between the marker post and the blocking block, and a connecting spring is fixedly connected between the blocking block and the sealing post.

[0018] Optionally, a pull rod is rotatably connected inside the connecting column, a pull band is fixedly connected between the pull rod and the sealing rod, and a return spring is fixedly connected between the pull rod and the connecting column.

[0019] Optionally, a plurality of elastic rods are fixedly connected to the side of the sealing column near the connecting column, and a plurality of fixing grooves are formed on the surface of the connecting column, wherein the elastic rods are adapted to the fixing grooves.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: The heating column, connecting column with a through-groove, and sealing column enable the indwelling tube, infusion tube, and flushing tube passing through the through-groove to be heated inside the through-groove, thus ensuring that the liquid entering the indwelling tube is close to normal body temperature. Several driving teeth are provided on the surface of the infusion tube, and a driving gear is provided inside the sealing column to facilitate the sliding of the driving teeth. The rotation of the driving gear causes the infusion tube to slide inside the through-groove along a certain trajectory. The infusion tube and the indwelling tube can be directly connected through a flexible hose connection structure. Therefore, when delivering nutrient solution, the infusion tube and the indwelling tube can be connected, allowing the nutrient solution to be heated without contacting the through-groove. This allows the device to use different types of nutrient solutions in a single application, broadening its applicability. Furthermore, sterile water passes through the through-groove, facilitating disinfection and drying. The connecting column and sealing column are detachable, simplifying routine maintenance of the device. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural view of the present invention;

[0022] Figure 2 This is an exploded view of the structure of this utility model;

[0023] Figure 3 For the present utility model Figure 2 Enlarged view of the local structure at point A;

[0024] Figure 4 This is a three-dimensional structural cross-sectional view of the blocking block of this utility model;

[0025] Figure 5 This is a three-dimensional structural cross-sectional view of the pull belt of this utility model;

[0026] Figure 6 For the present utility model Figure 5 Enlarged view of the local structure at point B.

[0027] In the diagram: 1. Heating column; 2. Connecting column; 3. Sealing column; 4. Through groove; 5. Indwelling tube; 6. Infusion tube; 7. Flushing tube; 8. Drive gear; 9. Drive gear; 10. Sealing rod; 11. One-way block; 12. Rotating rod; 13. Ring spring; 14. Blocking block; 15. Marker post; 16. Marker shaft; 17. Connecting belt; 18. Pulling rod; 19. Pulling belt; 20. Returning spring; 21. Elastic rod; 22. Fixing groove. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] like Figure 1-6 As shown, a nutrient solution constant temperature heating device includes...

[0030] The system comprises a heating column 1, a connecting column 2, and a sealing column 3. The heating column 1 is electrically connected to an external power source, and the heating column 1 and the connecting column 2 are detachably connected.

[0031] It should be noted that an electric heating block is provided inside the heating column 1, and the connection position of the heating column 1 and the connecting column 2 is made of a material with good thermal conductivity.

[0032] The connecting column 2 and the sealing column 3 are detachably connected;

[0033] It should be noted that a heat insulation layer is provided at the connection position of the connecting column 2 and the sealing column 3;

[0034] Two through-grooves 4 are formed on the opposite sides of the connecting column 2 and the sealing column 3. The cross-section of the through-grooves 4 is T-shaped. An indwelling tube 5, an infusion tube 6, and a flushing tube 7 are detachably connected inside the through-grooves 4. A heat-conducting layer is provided on the opposite sides of the two through-grooves 4. A connecting assembly is provided between the sealing column 3 and the infusion tube 6.

[0035] It should be noted that the end of the infusion tube 6 is provided with a flexible tube docking structure (not shown in the figure), which can be directly inserted into the indwelling tube 5 to realize the connection between the infusion tube 6 and the indwelling tube 5;

[0036] The connecting assembly includes a drive gear 8 rotatably disposed inside the sealing column 3, and a plurality of driving teeth 9 are fixedly connected to the surface of the infusion tube 6. The driving teeth 9 mesh with the drive gear 8. A sealing rod 10 is slidably connected inside the connecting column 2. The width of the sealing rod 10 is greater than the width of the driving teeth 9, and the sealing rod 10 contacts the passive teeth.

[0037] It should be noted that the sealing rod 10 is also slidably connected to the inside of the sealing column 3;

[0038] In practical applications, this constant-temperature heating device for nutrient solutions, through the heating column 1 and the connecting column 2 and sealing column 3 with through-grooves 4, ensures that the indwelling tube 5, infusion tube 6, and flushing tube 7 passing through the through-grooves 4 are heated inside the through-grooves 4. This ensures that the liquid entering the indwelling tube 5 is close to normal body temperature. Several driving teeth 9 are provided on the surface of the infusion tube 6, and a driving gear 8 is provided inside the sealing column 3 to drive the driving teeth 9 to slide. The rotation of the driving gear 8 causes the infusion tube 6 to slide inside the through-grooves 4 along a certain trajectory. The infusion tube 6 and the indwelling tube 5 can be directly connected through a hose docking structure. Thus, when delivering nutrient solutions, the infusion tube 6 and the indwelling tube 5 can be connected, and the nutrient solution can be heated without contacting the through-grooves 4. Therefore, the device can use different types of nutrient solutions at once, making it more applicable. Sterile water passes through the through-grooves 4, which is relatively easy to disinfect and dry. Furthermore, the connecting column 2 and sealing column 3 can be disassembled, which facilitates daily maintenance of the device.

[0039] In some specific implementations, a one-way block 11 is rotatably connected inside the connecting column 2. The length of the one-way block 11 is greater than the diameter of the through groove 4, and the end of the one-way block 11 contacts the horizontal side of the through groove 4. The distance between the one-way block 11 and the infusion tube 6 is less than the distance between the one-way block 11 and the flushing tube 7. A rotating rod 12 is fixedly connected inside the one-way block 11, and a ring spring 13 is fixedly connected between the rotating rod 12 and the connecting column 2. When the ring spring 13 is in its natural state, the one-way block 11 is in contact with the through groove 4. The through groove 4 is directly divided into two parts by the one-way block 11 near the infusion tube 6. When sterile water flows out of the flushing tube 7, the sterile water will be blocked by the one-way block 11 and will flow directly to the indwelling tube 5, avoiding the dispersion of sterile water and affecting the flow detection effect of the indwelling tube 5.

[0040] In some specific implementations, a blocking block 14 is slidably connected inside the sealing column 3. The blocking block 14 has a D-shaped cross-section and its width is the same as the diameter of the through groove 4. The distance between the blocking block 14 and the flushing pipe 7 is less than the distance between the blocking block 14 and the infusion pipe 6. By using the blocking block 14, which is close to the flushing pipe 7 and in contact with the through groove 4, the liquid inside the flushing pipe 7 can be prevented from flowing into the through groove 4. This can prevent accidental contact during the nutrient solution input process, which could cause sterile water to flow into the through groove 4 and affect the heating effect of the nutrient solution inside the infusion pipe 6.

[0041] In some specific implementations, a marker post 15 is rotatably connected to the side of the sealing post 3 away from the connecting post 2. The marker post 15 is fixedly connected to the drive gear 8. Two marker shafts 16 are fixedly connected to the surface of the sealing post 3. The marker post 15 contacts the marker shafts 16, and the line connecting the center of the two marker shafts 16 and the center of the marker post 15 forms a 90-degree angle. The angle of the drive gear 8 can be intuitively understood through the marker post 15 and the marker shafts 16, thereby understanding the position of the infusion tube 6. The direct contact between the marker post 15 and the marker shafts 16 restricts the rotational position of the marker post 15. Thus, when the infusion tube 6 is inserted, it ensures that the driving gear 9 contacts the drive gear 8, but the infusion tube 6 does not contact the one-way block 11.

[0042] In a further embodiment, a connecting strap 17 is fixedly connected between the marker post 15 and the blocking block 14, and a connecting spring (not shown in the figure) is fixedly connected between the blocking block 14 and the sealing post 3; the rotation of the marker post 15 and the sliding of the blocking block 14 are linked through the connecting strap 17, so that when the infusion tube 6 moves, the blocking block 14 will block the flushing tube 7.

[0043] In some specific implementations, a pull rod 18 is rotatably connected inside the connecting column 2, and a pull band 19 is fixedly connected between the pull rod 18 and the sealing rod 10. A return spring 20 is fixedly connected between the pull rod 18 and the connecting column 2. Through the return spring 20, when the infusion tube 6 is disengaged from the connecting column 2 and the sealing column 3, the sealing rod 10 can be engaged with and move with the driving teeth 9, ensuring that after the infusion tube 6 is disengaged from the vertical position of the through groove 4, both the through groove 4 and the sealing rod 10 are engaged with the indwelling tube 5, preventing liquid from flowing into the indwelling tube 5.

[0044] In some specific implementations, a plurality of elastic rods 21 are fixedly connected to the sealing post 3 near the connecting post 2, and a plurality of fixing grooves 22 are formed on the surface of the connecting post 2. The elastic rods 21 are adapted to the fixing grooves 22. Through the contact between the elastic rods 21 and the fixing grooves 22, the position between the sealing post 3 and the connecting post 2 can be defined.

[0045] The working principle of this utility model:

[0046] First, connect the heating column 1 and the connecting column 2. Then, attach the sealing column 3 and the connecting column 2 to the positions corresponding to the drive gear 8, the elastic rod 21 and the fixing groove 22, so that the elastic rod 21 is inserted into the fixing groove 22 and the drive gear 8 can rotate. Then, insert the flushing tube 7, the infusion tube 6 and the indwelling tube 5 in sequence. Sterile water flows into the through groove 4 through the flushing tube 7, and the flow of the indwelling tube 5 is checked.

[0047] When the indwelling tube 5 is in place, rotating the marker post 15 causes the drive gear 8 to rotate, which in turn moves the gear 9, causing the infusion tube 6 to move. This causes the one-way block 11 to rotate, and the end of the infusion tube 6 to fit into the indwelling tube 5. During the movement of the marker post 15, the blocking block 14 moves, allowing the nutrient solution to be infused.

[0048] The above embodiments are only used to illustrate the technical methods of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of this utility model without departing from the spirit and scope of the technical methods of this utility model.

Claims

1. A nutrient solution constant temperature heating device, characterized in that, include: The heating column (1), the connecting column (2), and the sealing column (3) are provided. The heating column (1) is electrically connected to an external power source. The heating column (1) and the connecting column (2) are detachably connected. The connecting column (2) and the sealing column (3) are detachably connected. Two through slots (4) are formed on the opposite sides of the connecting column (2) and the sealing column (3). The cross-section of the through slots (4) is T-shaped. An indwelling tube (5), an infusion tube (6), and a flushing tube (7) are detachably connected inside the through slots (4). A heat-conducting layer is provided on the opposite sides of the two through slots (4). A connecting assembly is provided between the sealing column (3) and the infusion tube (6). The connecting assembly includes a drive gear (8) rotatably disposed inside the sealing column (3), and a plurality of driving teeth (9) are fixedly connected to the surface of the infusion tube (6). The driving teeth (9) mesh with the drive gear (8). A sealing rod (10) is slidably connected inside the connecting column (2). The width of the sealing rod (10) is greater than the width of the driving teeth (9), and the sealing rod (10) contacts the passive teeth.

2. The nutrient solution constant temperature heating device according to claim 1, characterized in that, The connecting column (2) is rotatably connected to a one-way block (11). The length of the one-way block (11) is greater than the diameter of the through groove (4), and the end of the one-way block (11) is in contact with the horizontal position side of the through groove (4). The distance between the one-way block (11) and the infusion tube (6) is less than the distance between the one-way block (11) and the flushing tube (7).

3. The nutrient solution constant temperature heating device according to claim 2, characterized in that, A rotating rod (12) is fixedly connected inside the one-way block (11). A ring spring (13) is fixedly connected between the rotating rod (12) and the connecting column (2). When the ring spring (13) is in its natural state, the one-way block (11) fits into the through groove (4).

4. The nutrient solution constant temperature heating device according to claim 1, characterized in that, The sealing column (3) has a slidably connected blocking block (14) inside, and the width of the blocking block (14) is the same as the diameter of the through groove (4).

5. A nutrient solution constant temperature heating device according to claim 4, characterized in that, The cross-section of the blocking block (14) is D-shaped, and the distance between the blocking block (14) and the flushing tube (7) is less than the distance between the blocking block (14) and the infusion tube (6).

6. The nutrient solution constant temperature heating device according to claim 4, characterized in that, The sealing column (3) is rotatably connected to a marker column (15) on the side away from the connecting column (2), and the marker column (15) is fixedly connected to the drive gear (8).

7. A nutrient solution constant temperature heating device according to claim 6, characterized in that, Two marker shafts (16) are fixedly connected to the surface of the sealing column (3). The marker column (15) is in contact with the marker shafts (16), and the line connecting the center of the two marker shafts (16) and the center of the marker column (15) is at a 90-degree angle.

8. A nutrient solution constant temperature heating device according to claim 6, characterized in that, A connecting strap (17) is fixedly connected between the marker post (15) and the blocking block (14), and a connecting spring is fixedly connected between the blocking block (14) and the sealing post (3).

9. A nutrient solution constant temperature heating device according to claim 1, characterized in that, A pull rod (18) is rotatably connected inside the connecting column (2). A pull belt (19) is fixedly connected between the pull rod (18) and the sealing rod (10). A restoring spring (20) is fixedly connected between the pull rod (18) and the connecting column (2).

10. A nutrient solution constant temperature heating device according to claim 1, characterized in that, The sealing column (3) is fixedly connected to a number of elastic rods (21) on the side near the connecting column (2). The surface of the connecting column (2) is provided with a number of fixing grooves (22). The elastic rods (21) are adapted to the fixing grooves (22).

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