Infusion auxiliary device for pediatric nursing

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an infusion auxiliary device for pediatric nursing, the infusion auxiliary device comprises a catheter seat, a fixing block is fixed at one end in the catheter seat, a flexible catheter is fixed at one end in the fixing block, and the flexible catheter is fixedly connected with the catheter seat. The end, away from the fixing block, of the catheter base is sleeved with a detachable needle holding handle, a steel needle is fixed to the end, close to the fixing block, of the needle holding handle, an isolation plug is fixed to the position, located between the fixing block and the needle holding handle, in the catheter base, and one end of the steel needle penetrates through the flexible catheter and the isolation plug. When liquid medicine flows slowly or stops flowing, the driving handle is rotated, the correction rod is driven to move in the flexible catheter, the flexible catheter in the bent state is supported and corrected through the correction rod, the flexible catheter is restored to the approximately initial linear state, dredging and correction of the flexible catheter are achieved, and it is guaranteed that an infusion channel is unblocked again.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and particularly relates to an infusion auxiliary device for pediatric nursing. BACKGROUND

[0002] In pediatric clinical nursing, infusion therapy is the core means to cope with diseases such as infection, dehydration and nutritional deficiency. The indwelling needle has become the preferred medical instrument in the pediatric infusion scene because it can reduce the number of repeated punctures, reduce the physical and mental pain of children, and adapt to the characteristics of fragile blood vessels in pediatrics. Its advantages of repeated infusion and convenient fixation not only improve the nursing efficiency, but also effectively alleviate the resistance of children to puncture operation, fully meet the special needs of pediatric clinical nursing, and are widely used in clinical practice.

[0003] However, in actual application, the flexible hose of the pediatric indwelling needle is easily affected by factors such as children's body movement, body position change, fixation deviation, etc., and is prone to bending and folding, which slows down the infusion speed and even causes infusion channel blockage, so that the infusion cannot be carried out normally. At this time, it is often necessary to re-puncture, which further aggravates the resistance of children. At the same time, when infusing drugs such as mannitol which are prone to crystallization, drug crystals are easily attached to the inner wall of the hose and accumulated, which also causes the problem of hose blockage, affecting the safety and continuity of infusion. In view of the above blockage problem, medical staff can only manually squeeze the drip bottle on the infusion device to try to relieve the blockage by relying on the impact of the drug liquid in the drip bottle. This method is unstable and cannot avoid the problem from the root, and improper force control may cause additional stimulation to the child's blood vessels. If the blockage cannot be relieved, the indwelling needle must be replaced, and frequent replacement will completely lose the core medical value of reducing puncture and repeated use of the indwelling needle, which not only increases the cost of medical consumables, but also increases the nursing burden.

[0004] In summary, the bending of the indwelling needle hose and the accumulation of crystals of drugs prone to crystallization will cause blockage failure, which not only destroys the continuity of infusion therapy and affects the diagnosis and treatment effect, but also greatly reduces the medical value of the indwelling needle. The existing manual squeezing relief method has the limitations of poor effect, easy secondary injury and waste of medical resources, and cannot meet the efficient, safe and low-pain nursing needs of pediatrics. SUMMARY

[0005] The purpose of the present application is to provide an infusion auxiliary device for pediatric nursing. When the drug liquid flows slowly or stops flowing, the flexible guide tube is supported and straightened by rotating the driving handle and driving the straightening rod to move inside the flexible guide tube, so that the flexible guide tube is restored to an initial straight state, the flexible guide tube is dredged and straightened, and the infusion channel is ensured to be unblocked.

[0006] The technical solutions adopted by the present application are as follows: The utility model provides an infusion auxiliary device for paediatrics nursing, including the catheter seat, the one end inside of catheter seat is fixed with fixed block, the one end inside of fixed block is fixed with flexible catheter, and flexible catheter and catheter seat fixed connection, the one end of catheter seat away from fixed block is sleeved with detachable needle holder, the one end of needle holder close to fixed block is fixed with steel needle, the inside of catheter seat and between fixed block and needle holder is fixed with isolation plug, and one end of steel needle penetrates flexible catheter and isolation plug, still include: The correction assembly includes a correction rod, which is a hollow structure, and is assembled between the flexible catheter and the steel needle. In the initial state, the flexible catheter, the steel needle and the correction rod are coaxially arranged, and in the working state, after the end of the flexible catheter is bent, the correction rod can dredge and correct the flexible catheter.

[0007] In a preferred embodiment, the correction assembly further includes a drive handle, a plurality of connecting rods and a drive sleeve. The drive handle is rotatably connected to the middle end of the catheter seat, and a sealing element is arranged between the drive handle and the catheter seat. The plurality of connecting rods are symmetrically fixed inside the drive handle. The drive sleeve is fixed between the plurality of connecting rods. The inside of the drive sleeve is provided with internal threads. The end of the correction rod close to the outside of the drive sleeve is provided with external threads. The correction rod and the drive sleeve are threadedly connected through the cooperation of the internal threads and the external threads. When the drive handle is driven to rotate, the correction rod can be moved inside the flexible catheter through the drive handle.

[0008] In a preferred embodiment, operation windows are formed on both sides of the outside of the catheter seat, and the operation windows are adapted to the drive handle.

[0009] In a preferred embodiment, a plurality of anti-slip patterns are uniformly formed on the outside of the drive handle.

[0010] In a preferred embodiment, a rotation-stopping guide rod is fixed inside the fixed block. A guide sliding groove is formed on the outside of the correction rod, and the rotation-stopping guide rod and the guide sliding groove are adapted to each other. The correction rod and the fixed block are slidingly connected through the cooperation of the rotation-stopping guide rod and the guide sliding groove.

[0011] In a preferred embodiment, a plurality of communication holes are formed on the outside of the correction rod. A waist-shaped communication groove is formed on the outside of the drive sleeve, and the inside of the catheter seat and the inside of the correction rod are communicated through the communication holes and the waist-shaped communication groove.

[0012] In a preferred embodiment, in the initial state, the end of the correction rod away from the needle holder and the end of the fixed block away from the needle holder are flush with each other.

[0013] In a preferred embodiment, the corrective rod is made of any one of the following materials: medical-grade polyetheretherketone, medical-grade polyimide, or medical-grade nylon flexible catheter.

[0014] In a preferred embodiment, an extension tube is fixed to the upper end of the outer side of the catheter seat, a sealed infusion connector is fixed to one end of the extension tube, and a movable single-hand clamp is fitted to the outer side of the extension tube.

[0015] The technical effects achieved by this invention are as follows: When the flow of the drug solution is slow or stops, the present invention rotates the drive handle and moves the correction rod inside the flexible catheter. The correction rod scrapes away the crystals on the inner wall of the flexible catheter and pushes them into the blood vessel. At the same time, the correction rod can support and correct the flexible catheter in a bent state, so that the flexible catheter is restored to a near-initial straight state, thereby clearing and correcting the flexible catheter and ensuring that the infusion channel is unblocked again. This invention creates a connecting hole and a waist-shaped connecting groove on the outside of the corrective rod and the drive sleeve, respectively, so that the inside of the corrective rod and the inside of the catheter seat can be effectively connected. This avoids the obstruction of drug flow caused by the setting of the corrective rod, ensures that the infusion rate meets the clinical treatment needs, guarantees the continuity of drug delivery, and does not interrupt the infusion process due to the unblocking and correction operation. This invention uses the extension tube to rotate the drive handle and move the correction rod inside the catheter seat. With the above-mentioned design, the correction rod remains sterile during the process of clearing and correcting the flexible catheter, avoiding the risk of infection caused by external contamination and further improving the safety of pediatric clinical applications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the catheter seat of the present invention; Figure 3 This is a cross-sectional view of the internal structure of the catheter seat of the present invention; Figure 4 This is the present invention. Figure 3 A magnified view of a portion of point A in the middle; Figure 5 This is an exploded view of the internal structure of the catheter seat of the present invention; Figure 6 This is a schematic diagram of the structure of the corrective component of the present invention; Figure 7 This is an exploded view of the structure of the correction component of the present invention; Figure 8 This is a schematic diagram of the structure of the fixing block of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 10. Catheter base; 11. Fixing block; 12. Flexible catheter; 13. Needle holder; 14. Steel needle; 15. Isolation plug; 16. Operating window; 17. Anti-rotation guide rod; 18. Extension tube; 19. Sealed infusion connector; 20. Corrective components; 21. Correcting rod; 22. Drive handle; 23. Connecting rod; 24. Drive sleeve; 25. Guide groove; 26. Connecting hole; 27. Waist-shaped connecting groove. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0021] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0022] Please see the appendix Figures 1 to 5 As shown, this is the first embodiment of the present invention. This embodiment provides an infusion support device for pediatric nursing, including a catheter holder 10. A fixing block 11 is fixed to one end of the catheter holder 10, and a flexible catheter 12 is fixed to one end of the fixing block 11. The flexible catheter 12 and the catheter holder 10 are fixedly connected. A detachable needle holder 13 is sleeved on the end of the catheter holder 10 away from the fixing block 11. A steel needle 14 is fixed to the end of the needle holder 13 near the fixing block 11. An isolation plug 15 is fixed inside the catheter holder 10 and between the fixing block 11 and the needle holder 13. One end of the steel needle 14 passes through the flexible catheter 12 and the isolation plug 15. The device also includes: The correction assembly 20 includes a correction rod 21, which has a hollow structure and is assembled between the flexible catheter 12 and the steel needle 14. In the initial state, the flexible conduit 12, the steel needle 14, and the straightening rod 21 are coaxially arranged. In the working state, after the end of the flexible conduit 12 is bent, the straightening rod 21 can clear and straighten the flexible conduit 12.

[0023] Furthermore, the material of the isolation plug 15 is any one of the following: butyl rubber, silicone, TPE, TPR. In this embodiment, before administering intravenous infusion to a child, the puncture site is pretreated (including disinfection and tourniquet application). The catheter hub 10 is held, and the needle holder 13 is held against the finger, keeping the catheter hub 10 and the needle holder 13 relatively still. The child is punctured through the steel needle 14, so that the steel needle 14, flexible catheter 12, and corrective rod 21 are simultaneously inserted into the child's blood vessel. After blood return, the needle holder 13 is held away from the puncture site. The fixed connection between the needle holder 13 and the steel needle 14 ensures that the needle is held in place. The handle 13 pulls the steel needle 14 out of the catheter seat 10. During this process, after the steel needle 14 disengages from the isolation plug 15, the needle track inside the isolation plug 15 automatically closes, achieving an immediate seal and ensuring that the inside of the catheter seat 10 is sealed. The corrective assembly 20 is operated, causing the corrective rod 21 to move closer to the isolation plug 15 inside the catheter seat 10. This allows the flexible catheter 12 to remain flexible inside the blood vessel, preventing damage to the child's blood vessel wall during limb movement. After securing the catheter hub 10 and connecting the infusion set and bottle, intravenous infusion is administered to the child. When the flexible catheter 12 experiences slow or stopped flow of medication due to the child's limb movement or drug crystals, the corrective component 20 is activated, causing the corrective rod 21 to move away from the isolation plug 15. As the corrective rod 21 moves inside the flexible catheter 12, its outer wall and the inner wall of the flexible catheter 12 fit tightly together, scraping away and pushing the crystals from the inner wall of the flexible catheter 12 into the blood vessel. Simultaneously, the corrective rod 21 supports and corrects the bent flexible catheter 12, restoring it to a near-initial straight state and ensuring the infusion channel is unobstructed again. After the unobstructed correction is completed, the corrective component 20 is activated in reverse, moving the corrective rod 21 closer to the isolation plug 15 to restore the flexibility of the flexible catheter 12. The entire operation does not require disassembling the indwelling needle or interrupting the infusion, and the corrective rod 21 remains in a sterile environment, effectively improving the continuity and safety of pediatric intravenous infusion therapy.

[0024] Secondly, please refer to it again. Figures 5 to 7The correction assembly 20 also includes a drive handle 22, multiple connecting rods 23, and a drive sleeve 24. The drive handle 22 is rotatably connected to the middle end of the catheter seat 10, and a sealing element is assembled between the drive handle 22 and the catheter seat 10. The multiple connecting rods 23 are symmetrically fixed inside the drive handle 22, and the drive sleeve 24 is fixed between the multiple connecting rods 23. The drive sleeve 24 has an internal thread, and the end of the correction rod 21 near the outside of the drive sleeve 24 has an external thread. The correction rod 21 and the drive sleeve 24 are connected by the mating of the internal and external threads. Both sides of the outside of the catheter seat 10 have operation windows 16, and the operation windows 16 are adapted to the drive handle 22. When the drive handle 22 is rotated, the correction rod 21 can be moved inside the flexible catheter 12.

[0025] In this embodiment, when the flow of the medication is slow or stops, the drive handle 22 is rotated. Through the fixed connection between the drive handle 22 and the connecting rod 23, the drive handle 22 drives the connecting rod 23 to rotate. Through the fixed connection between the connecting rod 23 and the drive sleeve 24, the connecting rod 23 drives the drive sleeve 24 to rotate. Through the threaded connection between the drive sleeve 24 and the straightening rod 21, the drive sleeve 24 drives the straightening rod 21 to move. The straightening rod 21 cleans the crystals on the inner wall of the flexible catheter 12 and straightens the bent flexible catheter 12, restoring the flexible catheter 12 to a near-initial straight state, ensuring that the infusion channel is unobstructed again. After the unblocking and correction are completed, the drive handle 22 is rotated in the opposite direction, causing the straightening rod 21 to move towards the isolation plug 15 and disengage from the interior of the flexible catheter 12, ensuring that the flexible catheter 12 remains flexible inside the child's blood vessels.

[0026] Secondly, please refer to it again. Figure 6 Multiple anti-slip textures are evenly distributed on the outer side of the drive handle 22.

[0027] In this embodiment, the anti-slip texture can increase the friction between the medical staff's hands and the drive handle 22, making it easier for the medical staff to apply force.

[0028] Please refer to it again. Figure 6 and Figure 8 The fixed block 11 has an anti-rotation guide rod 17 fixed inside, and the straightening rod 21 has a guide groove 25 on the outside. The anti-rotation guide rod 17 and the guide groove 25 are compatible. The straightening rod 21 and the fixed block 11 are slidably connected through the cooperation of the anti-rotation guide rod 17 and the guide groove 25.

[0029] In this embodiment, when the drive handle 22 drives the drive sleeve 24 to rotate and moves the straightening rod 21, the anti-rotation guide rod 17 and the guide groove 25 can limit the straightening rod 21, which can prevent the straightening rod 21 from rotating synchronously with the drive sleeve 24, so that the straightening rod 21 can stably unclog and straighten the flexible catheter 12.

[0030] Please refer to it again. Figure 6 and Figure 7 The outer side of the correcting rod 21 is provided with multiple connecting holes 26, and the outer side of the driving sleeve 24 is provided with a waist-shaped connecting groove 27. The interior of the guide seat 10 and the interior of the correcting rod 21 are connected to each other through the connecting holes 26 and the waist-shaped connecting groove 27.

[0031] In this embodiment, during the drug delivery process, the connection hole 26 and the waist-shaped connection groove 27 enable effective communication between the inside of the corrective rod 21 and the inside of the catheter seat 10, avoiding obstruction of drug flow due to the setting of the corrective rod 21, ensuring that the infusion rate meets the clinical treatment requirements. When the corrective rod 21 moves inside the flexible catheter 12, the connection hole 26 moves synchronously with the corrective rod 21. The corrective rod 21 and the catheter seat 10 always remain in a connected state through the waist-shaped connection groove 27, ensuring the continuity of drug delivery and preventing interruption of the infusion process due to unblocking and correction operations.

[0032] In a preferred embodiment, in the initial state, the end of the corrector 21 away from the needle holder 13 and the end of the fixing block 11 away from the needle holder 13 are flush with each other.

[0033] In this embodiment, the above-mentioned scheme is designed to provide sufficient space for movement of the rod 21 to ensure that it can effectively penetrate into the flexible conduit 12 to complete the cleaning and correction work when needed.

[0034] In a preferred embodiment, the material of the corrective rod 21 is any one of the following materials: medical grade polyetheretherketone, medical grade polyimide, and medical nylon flexible catheter 12. In this embodiment, the material of the corrective rod 21 is preferably medical grade polyetheretherketone.

[0035] In this embodiment, the medical-grade polyetheretherketone material has excellent biocompatibility, is well compatible with human tissues, and avoids triggering immune rejection reactions. At the same time, it has high mechanical strength and wear resistance, which can ensure that it is not easily deformed or damaged during repeated unblocking and correction operations, thus extending the service life of the device. In addition, the material also has good corrosion resistance, and can withstand long-term immersion in various drug solutions without producing chemical changes, ensuring the safety of infusion therapy.

[0036] Please refer to it again. Figures 1 to 2An extension tube 18 is fixed to the upper end of the outer side of the catheter seat 10. A closed infusion connector 19 is fixed to one end of the extension tube 18. A movable single-hand clamp is fitted to the outer side of the extension tube 18. The closed infusion connector 19 can be connected to the infusion set. The extension tube 18 is used to deliver the drug solution. The single-hand clamp can block the flow of the extension tube 18.

[0037] The working principle of this invention is as follows: Before administering intravenous fluids to a child, a needle 14 is inserted into the child's blood vessel, allowing the needle 14, flexible catheter 12, and corrective rod 21 to be inserted simultaneously. After blood return, the needle holder 13 is held and moved away from the puncture site, causing the needle holder 13 to pull the needle 14 out of the catheter holder 10. The drive handle 22 is rotated, which drives the corrective rod 21 to move within the catheter holder 10 towards the isolation plug 15, allowing the flexible catheter 12 to remain flexible within the blood vessel. When the flexible catheter 12 is used due to the child's limb movement... When the flow of the medication slows down or stops due to crystallization, the drive handle 22 is activated, causing the corrective rod 21 to move away from the isolation plug 15. As the corrective rod 21 moves inside the flexible catheter 12, its outer wall and the inner wall of the flexible catheter 12 fit tightly together, scraping away the crystals on the inner wall of the flexible catheter 12 and pushing them into the blood vessel. At the same time, the corrective rod 21 can support and correct the bent flexible catheter 12, restoring it to a near-initial straight state and ensuring that the infusion channel is unobstructed again.

[0038] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. An infusion aid for paediatric care, characterised in that: The utility model provides a kind of flexible catheter, including catheter seat (10), the inside one end of the catheter seat (10) is fixed with fixed block (11), the inside one end of the fixed block (11) is fixed with flexible catheter (12), and the flexible catheter (12) and catheter seat (10) fixed connection, the one end of the catheter seat (10) away from fixed block (11) is sleeved with detachable needle holder (13), the one end of the needle holder (13) close to fixed block (11) is fixed with steel needle (14), the inside of the catheter seat (10) and between fixed block (11) and needle holder (13) is fixed with isolating plug (15), and the one end of the steel needle (14) penetrates flexible catheter (12) and isolating plug (15), further including: Correcting assembly (20), the correcting assembly (20) includes correction rod (21), the correction rod (21) is hollow structure, the correction rod (21) is assembled between flexible catheter (12) and steel needle (14); Wherein, working condition, and the end of the flexible catheter (12) is bent, the correction rod (21) can dredge and correct flexible catheter (12).

2. The infusion aid for pediatric care of claim 1, wherein: The correcting assembly (20) further includes drive handle (22), a plurality of connecting rods (23) and drive sleeve (24), the drive handle (22) is rotatably connected to the middle end of the catheter seat (10), and a sealing element is arranged between the drive handle (22) and the catheter seat (10), a plurality of the connecting rods (23) are symmetrically fixed in the drive handle (22), the drive sleeve (24) is fixed between the plurality of connecting rods (23), and the correction rod (21) is threadedly connected with the drive sleeve (24), wherein the drive handle (22) is driven to rotate, and the correction rod (21) can be moved in the flexible catheter (12) by the drive handle (22).

3. The infusion aid for pediatric care of claim 2, wherein: An operation window (16) is formed on the outside of the catheter seat (10), and the operation window (16) is matched with the drive handle (22).

4. The infusion aid for pediatric care of claim 2, wherein: A plurality of anti-skid lines are uniformly formed on the outside of the drive handle (22).

5. The infusion aid for pediatric care of claim 1, wherein: A rotation-stopping guide rod (17) is fixed in the fixed block (11), a guide sliding groove (25) is formed on the outside of the correction rod (21), and the rotation-stopping guide rod (17) is matched with the guide sliding groove (25), and the correction rod (21) is slidably connected with the fixed block (11).

6. The infusion aid for pediatric care of claim 2, wherein: A plurality of communication holes (26) are formed on the outside of the correction rod (21), a waist-shaped communication groove (27) is formed on the outside of the drive sleeve (24), and the inside of the catheter seat (10) and the inside of the correction rod (21) are communicated through the communication holes (26) and the waist-shaped communication groove (27).

7. The infusion aid of claim 1, wherein: In the initial state, the end of the correction rod (21) away from the needle holder (13) is flush with the end of the fixed block (11) away from the needle holder (13).

8. The infusion aid for pediatric care of claim 1, wherein: The material of the correction rod (21) is any one of the following materials: medical-grade polyether ether ketone, medical-grade polyimide, and medical nylon flexible catheter (12).

9. The infusion aid according to claim 1, wherein: The upper end outside of the catheter seat (10) is fixed with an extension tube (18), one end of the extension tube (18) is fixed with a closed infusion connector (19), and the outside of the extension tube (18) is equipped with a single hand clamp.

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