A catheter care and securement device for intravenous therapy
By designing a catheter care fixation device, stable fixation and flexible adjustment of the catheter are achieved, solving the problems of catheter slippage, bending, and phlebitis, improving the safety and comfort of intravenous therapy, and reducing the nursing burden.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)
- Filing Date
- 2026-05-12
- Publication Date
- 2026-07-21
AI Technical Summary
Existing catheter fixation methods cannot effectively resist multi-directional traction, making adjustment difficult and leading to catheter slippage, bending, or unplanned extubation. Furthermore, rigid splints cannot be linked with the catheter, causing phlebitis, bleeding, or breakage.
A catheter care and fixation device for intravenous therapy has been designed, comprising a fixation frame, a catheter fixation mechanism, a synchronous adjustment mechanism, and a movable connection mechanism. Through height adjustment, catheter limiting and fixation, an arc-shaped placement plate, and an arm fixation ring, the device achieves stable fixation, flexible adjustment, and comfortable protection of the catheter.
It effectively prevents catheters from dislodging or damaging blood vessel walls due to accidental pulling, improves treatment safety and comfort, reduces the workload of nursing staff, and enhances the versatility and applicability of the device.
Smart Images
Figure CN122424451A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and more specifically, to a catheter care and fixation device for intravenous therapy. Background Technology
[0002] Intravenous therapy is an important means in modern clinical medicine. In particular, medium- and long-term intravenous catheterization techniques such as peripherally inserted central catheters (PICC) and central venous catheters (CVC) have been widely used in critical care, total parenteral nutrition, chemotherapy, and other treatment scenarios. As the core access route for intravenous therapy, the catheter is used to deliver drugs directly to the central vein, avoiding damage to peripheral blood vessels by hypertonic or irritating drugs, reducing the risk of phlebitis and tissue necrosis. Its fixation stability and nursing safety are directly related to the treatment effect and patient prognosis.
[0003] According to clinical data, the rate of intravenous treatment for hospitalized patients in my country exceeds 90%. Among them, the proportion of long-term indwelling catheters such as peripherally inserted central catheters (PICC), central venous catheters (CVC), and indwelling needles is increasing year by year. These catheters have a long indwelling time, and it is necessary to continuously ensure the stability of the catheter position during the indwelling period to avoid complications such as catheter dislodgement, phlebitis, and extravasation of medication caused by displacement or pulling. At present, the clinical practice generally uses "medical tape + gauze pad" or "disposable sterile dressing" to fix the catheter. In order to deal with different diameters and multiple catheters in parallel, some departments also use "split catheter clips" or "Velcro straps". For agitated, unconscious or obese patients, "hard plastic splints" or "foam fixation supports" are often added to the wrist to restrict limb movement. However, the above methods still have the following problems: (1) The use of tape only provides adhesion and cannot resist multi-directional traction. When the patient turns over, coughs or is transported, the catheter is very easy to slip, bend or even be removed without planning. (2) It is difficult to adjust. Once the catheter position needs to be finely adjusted (such as adjusting the puncture angle or changing the puncture point), the original tape must be torn off and re-fixed, which wastes consumables and increases the workload of medical staff. Repeated tearing and pasting can easily cause skin damage. (3) The existing hard splints or fixation supports cannot form a linkage with the catheter. When the patient moves his limbs, the relative displacement between the catheter and the puncture point will form a shearing force, which will induce phlebitis, bleeding or catheter breakage.
[0004] Therefore, the present invention aims to provide a catheter care fixation device for intravenous therapy to solve the above-mentioned problems. Summary of the Invention
[0005] The purpose of this invention is to provide a catheter care and fixation device for intravenous therapy. This invention combines catheter fixation, protection, and patient positioning management, enabling the device to achieve stable bedside fixation, flexible height and horizontal position adjustment, reliable catheter limiting and fixation, comfortable arm support, and synchronous protection of the catheter when the patient's arm moves slightly. This effectively prevents the catheter from falling out, shifting, or damaging the blood vessel wall due to accidental pulling, greatly improving the safety and comfort of intravenous therapy and reducing the workload of nursing staff.
[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a catheter care and fixation device for intravenous therapy, comprising a fixation frame, a height adjustment plate on the fixation frame, a support plate on the height adjustment plate, a care plate on the support plate, a catheter fixation mechanism on the care plate for limiting and fixing the catheter, an arc-shaped placement plate on the care plate, a synchronous adjustment mechanism between the arc-shaped placement plate and the catheter fixation mechanism for protecting the catheter from being pulled, a placement plate groove on the arc-shaped placement plate, a movable connecting mechanism on the placement plate groove, and an arm fixation ring on the movable connecting mechanism for fixing the patient's arm.
[0007] By adopting the above technical solution, a height adjustment plate is installed on the fixation frame, which can change the overall height of the device to adapt to different bed heights and patient positions. A support plate is installed on the height adjustment plate, and a nursing plate is installed on the support plate. A catheter fixation mechanism is installed on the nursing plate to limit and fix the catheter, reducing the risk of catheter dislodgement due to external force and lowering the probability of complications such as phlebitis and extravasation. An arc-shaped placement plate is installed on the nursing plate to conform to the physiological curve of the arm, avoiding muscle soreness caused by prolonged arm placement and improving patient comfort. A synchronous adjustment mechanism is provided between the arc-shaped placement plate and the catheter fixation mechanism, which can adjust the catheter position synchronously when the arm moves slightly, protecting the integrity of the venous access. A placement plate groove is provided on the arc-shaped placement plate, and a movable connection mechanism is installed on the placement plate groove. An arm fixation ring is detachably installed on the movable connection mechanism, which can be fixed at different positions on the patient's arm according to actual needs, avoiding prolonged pressure on the same position of the limb. Overall, it effectively prevents the catheter from dislodging, shifting, or damaging the blood vessel wall due to accidental pulling, greatly improving the safety and comfort of intravenous therapy and reducing the workload of nursing staff.
[0008] The present invention is further configured such that: the catheter fixing mechanism includes a catheter fixing plate, a first rotating column, a second rotating column, and a catheter limiting plate; the bottom of the catheter fixing plate and the catheter limiting plate are fixedly connected to the nursing plate, and the bottom of the first rotating column and the second rotating column are both connected to the synchronous adjustment mechanism and located between the catheter fixing plate and the catheter limiting plate.
[0009] By adopting the above technical solution, the bottom of the catheter fixation plate and the catheter limiting plate are fixedly connected to the nursing plate. The bottom of rotating column one and rotating column two are both connected to the synchronous adjustment mechanism and located between the catheter fixation plate and the catheter limiting plate, which can form an effective clamping range. This ensures that while the catheter is fixed, the section near the puncture point can be in a state of movable adjustment that can be driven by the synchronous adjustment mechanism, thereby avoiding the catheter pulling behavior when the patient performs limb movements, and improving the synergy between catheter fixation and movable adjustment.
[0010] The present invention is further configured such that: the catheter fixing plate is provided with a catheter fixing groove, the catheter limiting plate is provided with a catheter limiting groove, the catheter fixing groove is matched with the size of the catheter, and the size of the catheter limiting groove is larger than that of the catheter fixing groove.
[0011] By adopting the above technical solution, a catheter fixing groove is provided on the catheter fixing plate, and a catheter limiting groove is provided on the catheter limiting plate. The size of the catheter fixing groove matches that of the catheter, so that the catheter fixing groove can lock and fix the main body of the catheter to prevent it from sliding. The size of the catheter limiting groove is larger than that of the catheter fixing groove, and the catheter limiting groove provides a loose channel for the catheter or the part near the fixing point, so that when the patient performs limb movements, the catheter can be moved and adjusted by the synchronous adjustment mechanism, avoiding the catheter being pulled and thus causing the catheter to fall out or damage the blood vessel wall.
[0012] The present invention is further configured such that the number of catheter fixing grooves is multiple, and the size of the multiple catheter fixing grooves is set according to the size of different catheters, so that the catheter fixing grooves can be used for catheters of different sizes and types.
[0013] By adopting the above technical solution, the number of catheter fixation slots is set to multiple, and the size of the multiple catheter fixation slots is set according to the size of different catheters, so that the catheter fixation slots can be used for different sizes and types of catheters, effectively improving the versatility and applicability of the device. This allows the device to be compatible with fixing different types (such as different diameters) of intravenous catheters commonly used in clinical practice (such as PICC, CVC, etc.), reducing the cost for hospitals to equip themselves with different fixation devices and improving the efficiency and convenience of nursing operations.
[0014] The present invention is further configured such that: the synchronous adjustment mechanism includes a rotating screw, a connecting rod one, a connecting rod two, a connecting rod three, a gear one, a gear two, a gear three, and two telescopic springs; one end of the connecting rod one is eccentrically connected to a rotating column one, and the other end is connected to a gear one; one end of the connecting rod two is eccentrically connected to a rotating column two, and the other end is connected to a gear two; the eccentric connection directions of the rotating column one and the rotating column two are opposite; one end of the connecting rod three is fixedly connected to an arc-shaped placement plate, and the other end is connected to a gear three; both ends of the rotating screw are respectively connected to telescopic springs; the ends of the two telescopic springs away from the rotating screw are connected to two opposite sidewalls of the nursing plate; the rotating screw meshes with gear one, gear two, and gear three respectively.
[0015] By adopting the above technical solution, when the patient's arm moves on the arc-shaped placement plate, the arm moves the arc-shaped placement plate, and then the connecting rod three and gear three drive the rotating screw to rotate, which in turn drives gear one, gear two and the connected rotating column one and rotating column two to rotate synchronously. The catheter is closely attached to the rotating column one and rotating column two, so that the two rotating columns can smoothly adjust the length and slack of the catheter, actively release or retract a section of the catheter, and always keep the catheter in a tension-free and safe state, thereby avoiding unplanned catheter removal and mechanical phlebitis.
[0016] The present invention is further configured such that: the movable connecting mechanism includes a circular slider and a connecting block; the circular slider moves along the groove of the placement plate, one end of the connecting block is connected to the circular slider, the other end of the connecting block is connected to the arm fixing ring, the groove of the placement plate is provided with a circular hole, the circular hole is matched with the size of the circular slider, so that the circular slider can be disassembled from the circular hole.
[0017] By adopting the above technical solution, one end of the connecting block is connected to the circular slider, and the other end of the connecting block is connected to the arm fixation ring. The circular slider moves along the groove of the placement plate, allowing the horizontal position of the arm fixation ring to be adjusted according to the actual thickness and comfort of the patient's arm. The groove of the placement plate is provided with a circular hole, and the size of the circular hole matches that of the circular slider, allowing the circular slider to be disassembled from the circular hole. This allows for fixation at different positions of the patient's limb, avoiding prolonged pressure on the same position of the limb by the device. At the same time, the disassembled arm fixation ring is more convenient for cleaning, disinfection, or other nursing operations, enhancing the practicality and ease of use of the device.
[0018] The invention is further configured such that: the bottom of the fixing frame is provided with a fixing bolt, the top of the fixing bolt passes through the bottom of the fixing frame to abut against the edge of the bed, and the bottom of the fixing bolt is provided with a rotating handle.
[0019] By adopting the above technical solution, a fixing bolt is provided at the bottom of the fixation frame, and a rotating handle is provided at the bottom of the fixing bolt. The top of the fixing bolt passes through the bottom of the fixation frame. By rotating the rotating handle at the bottom, the fixing bolt is driven to rise, so that its top is firmly against the edge of the bed, thereby fixing the entire device stably on the bed and avoiding the instability of the catheter due to shaking or displacement of the device during treatment.
[0020] The present invention is further configured such that: the fixing frame is provided with a limiting through groove, the height adjustment plate is located in the limiting through groove, the height adjustment plate is provided with a plurality of adjustment holes along the vertical direction, the fixing frame is provided with a limiting hole, the limiting hole is provided with a limiting rod, and the limiting rod is matched with the size of the adjustment hole for adjusting the height of the height adjustment plate.
[0021] By adopting the above technical solution, the height of the overall device can be adjusted by inserting the limiting rod into the adjustment holes of different heights, so that it can match the height of the hospital bed of different heights or adapt to the ideal and comfortable arm height when the patient is lying down. At the same time, the limiting through groove ensures the vertical stability of the adjustment process, and the pin-type structure ensures that the height is stable and reliable after fixing, and the operation is simple and quick.
[0022] The present invention is further configured such that: the support plate is provided with a support plate groove, and a square slider is provided in the support plate groove; the top of the square slider is fixedly connected to the nursing plate; and the square slider slides along the support plate groove to realize the movement of the nursing plate in the horizontal direction.
[0023] By adopting the above technical solution, a support plate groove is provided on the support plate, and a square slider is provided in the support plate groove. The top of the square slider is fixedly connected to the nursing plate. The square slider slides along the support plate groove to realize the movement of the nursing plate in the horizontal direction. This allows for precise alignment and fine adjustment according to the patient's actual body position and puncture site, ensuring that the patient's arm can be placed on the arc-shaped placement plate at the most natural and comfortable angle. This avoids patient discomfort caused by forced fixation and further improves comfort and compliance.
[0024] The present invention is further configured such that a rubber pad is provided on the inner side wall of the arm fixing ring.
[0025] By adopting the above technical solution, a rubber pad is set on the inner wall of the arm fixation ring, which increases the friction with the arm skin and prevents the arm from sliding inside the ring. At the same time, the rubber pad can also buffer the pressure of the arm fixation ring on the patient's limb, avoiding skin indentations, strangulation or discomfort caused by prolonged fixation, and significantly improving the patient's comfort and safety.
[0026] In summary, the present invention has the following beneficial effects:
[0027] 1. This invention effectively limits and secures the catheter through a catheter fixation mechanism, significantly reducing the risk of catheter displacement, slippage, or unplanned removal due to external traction. Simultaneously, the synchronous adjustment mechanism can automatically and synchronously adjust the catheter's slack when the patient's arm moves slightly, actively releasing or retracting the catheter to always maintain it in a tension-free and safe state. This fundamentally avoids the catheter pulling and damaging the blood vessel wall, effectively preventing complications such as mechanical phlebitis, needle bulging, and extravasation of medication. The fixing bolts at the bottom of the fixation frame are used to firmly clamp the entire device to the edge of the bed, preventing the device from shifting as a whole and providing a stable external environment for the catheter. The overall device greatly improves the safety and reliability of intravenous therapy.
[0028] 2. This invention improves patient comfort and compliance during treatment. The arc-shaped placement plate conforms to the physiological curve of the arm, providing comfortable support and avoiding muscle soreness and discomfort caused by prolonged placement. Meanwhile, the rubber pad on the inner side of the arm fixation ring increases friction to prevent slippage and cushions pressure. By moving the position horizontally, it avoids prolonged pressure on the same area, effectively preventing skin indentations and strangulation. Compared with traditional sutures or tape fixation, this device reduces direct skin irritation, allergies, and damage, and is suitable for patients with fragile skin.
[0029] 3. This invention uses multiple catheter fixation slots of different sizes to make it compatible with various types and diameters of intravenous catheters such as PICC and CVC. At the same time, the whole device has height and horizontal adjustment functions, which can flexibly adapt to different height beds, different body types, and different puncture points to achieve precise positioning and ensure that the patient is in the most comfortable position. The arm fixation ring can be easily removed and moved through the slider mechanism, which greatly facilitates nursing staff to clean, disinfect, change dressings, or perform other nursing operations on the patient's arm, simplifies the workflow, and improves efficiency. Furthermore, the fixing bolts can be easily locked by turning the handle, and the adjustment mechanism is intuitive and simple to operate, making this device universal, adaptable, and convenient.
[0030] 4. This invention integrates catheter fixation, protection, and patient positioning management into a standardized and integrated device structure. This reduces the hassle for nursing staff in finding and combining various fixation materials (tape, dressings, bandages, etc.). At the same time, the overall device has reliable stability and safety, effectively reducing the additional processing time and medical resources required due to catheter-related problems (such as dislodgement, blockage, phlebitis), reducing the nursing burden on medical staff, and improving the safety and efficiency of intravenous therapy. Attached Figure Description
[0031] Figure 1This is a schematic diagram of the appearance of a catheter care and fixation device for intravenous therapy according to an embodiment of the present invention;
[0032] Figure 2 This is a top view of a catheter care and fixation device for intravenous therapy according to an embodiment of the present invention;
[0033] Figure 3 This is a side view of a catheter care and fixation device for intravenous therapy according to an embodiment of the present invention;
[0034] Figure 4 This is a schematic diagram of the connection structure of the synchronization adjustment mechanism in an embodiment of the present invention;
[0035] Figure 5 This is a schematic diagram of the connection structure of the active connection mechanism in an embodiment of the present invention.
[0036] In the diagram: 1. Fixing frame; 2. Height adjustment plate; 3. Support plate; 4. Nursing plate; 5. Rotating screw; 6. Arc-shaped placement plate; 7. Placement plate groove; 8. Arm fixing ring; 9. Catheter fixing plate; 10. Rotating column one; 11. Rotating column two; 12. Catheter limiting plate; 13. Catheter fixing groove; 14. Catheter limiting groove; 15. Connecting rod one; 16. Connecting rod two; 17. Connecting rod three; 18. Gear one; 19. Gear two; 20. Gear three; 21. Telescopic spring; 22. Circular slider; 23. Connecting block; 24. Fixing bolt; 25. Rotating handle; 26. Limiting through groove; 27. Adjustment hole; 28. Limiting hole; 29. Limiting rod; 30. Support plate groove; 31. Square slider; 32. Rubber pad; 33. Circular hole. Detailed Implementation
[0037] The following is in conjunction with the appendix Figures 1-5 The present invention will be described in further detail below.
[0038] Example: A catheter care and fixation device for intravenous therapy includes a fixation frame 1. A height adjustment plate 2 is movably embedded in the fixation frame 1 to change the overall height of the device to adapt to different bed heights and patient positions. A support plate 3 is fixedly installed on the height adjustment plate 2. A care plate 4 is installed on the support plate 3. A catheter fixation mechanism is installed on the care plate 4. The catheter fixation mechanism can limit and fix the catheter, reducing the risk of catheter dislodgement due to external force and lowering the probability of complications such as phlebitis and extravasation. An arc-shaped placement plate 6 is installed on the care plate 4 to conform to the physiological curve of the arm and avoid prolonged placement of the catheter on the arm. To reduce muscle soreness and improve patient comfort, a synchronous adjustment mechanism is installed between the arc-shaped placement plate 6 and the catheter fixation mechanism. This mechanism allows for simultaneous adjustment of the catheter position during slight arm movements, protecting the integrity of the venous access. A placement plate groove 7 is installed on the side wall of the arc-shaped placement plate 6, and a movable connection mechanism is installed on the placement plate groove 7. An arm fixation ring 8 is detachably installed on the movable connection mechanism, which can be used to fix different positions on the patient's arm as needed, avoiding prolonged pressure on the same position of the limb. Overall, this effectively prevents the catheter from falling off, shifting, or damaging the blood vessel wall due to accidental pulling.
[0039] In this preferred embodiment, the catheter fixation mechanism includes a catheter fixation plate 9, a first rotating column 10, a second rotating column 11, and a catheter limiting plate 12. The bottoms of the catheter fixation plate 9 and the catheter limiting plate 12 are fixedly connected to the nursing plate 4. The bottoms of the first rotating column 10 and the second rotating column 11 are both connected to the synchronous adjustment mechanism and are located between the catheter fixation plate 9 and the catheter limiting plate 12, forming an effective clamping area. This ensures that while the catheter is fixed, the section near the puncture point can be in a state of movable adjustment that can be driven by the synchronous adjustment mechanism, thereby avoiding catheter pulling behavior when the patient performs limb movements and improving the synergy between catheter fixation and movable adjustment.
[0040] In this preferred embodiment, the catheter fixation plate 9 is provided with a catheter fixation groove 13 at its top, and the catheter limiting plate 12 is provided with a catheter limiting groove 14 at its top. The catheter fixation groove 13 matches the size of the catheter, so that the catheter fixation groove 13 can clamp and fix the main body of the catheter to prevent it from sliding. The size of the catheter limiting groove 14 is larger than that of the catheter fixation groove 13. The catheter limiting groove 14 provides a loose channel for the catheter or the part near the fixation point, so that when the patient performs limb movements, the catheter can be moved and adjusted by the synchronous adjustment mechanism, avoiding the catheter being pulled and thus causing the catheter to fall off or damage the blood vessel wall.
[0041] In this preferred embodiment, there are multiple catheter fixation slots 13, and the size of the multiple catheter fixation slots 13 is set according to the size of different catheters, so that the catheter fixation slots 13 can be used for different sizes and types of catheters, effectively improving the versatility and applicability of the device. This allows the device to be compatible with fixing different types (such as different diameters) of intravenous catheters commonly used in clinical practice (such as PICC, CVC, etc.), reducing the cost of hospitals needing to equip themselves with different fixation devices, and improving the efficiency and convenience of nursing operations.
[0042] In this preferred embodiment, the synchronous adjustment mechanism includes a rotating screw 5, a connecting rod 15, a connecting rod 26, a connecting rod 37, a gear 18, a gear 29, a gear 30, and two telescopic springs 21. One end of the connecting rod 15 is eccentrically connected to the rotating column 10, and the other end is connected to the gear 18. One end of the connecting rod 26 is eccentrically connected to the rotating column 21, and the other end is connected to the gear 29. The eccentric connections of the rotating column 10 and the rotating column 21 are in opposite directions. One end of the connecting rod 37 is fixedly connected to the arc-shaped placement plate 6, and the other end is connected to the gear 30. Both ends of the rotating screw 5 are connected to the telescopic springs 21, and the ends of the two telescopic springs 21 away from the rotating screw 5 are connected to the two opposite side walls of the nursing plate 4. The rotating screw 5 is divided into... Do not engage with gear 18, gear 29, or gear 30. When the patient's arm moves on the arc-shaped placement plate 6, the arm moves the arc-shaped placement plate 6, which then drives the rotating screw 5 to rotate via connecting rod 317 and gear 320. This, in turn, drives gear 18, gear 29, and the connected rotating columns 10 and 21 to rotate synchronously. The catheter is tightly attached to rotating columns 10 and 21, and the catheter is eccentrically connected to the furthest point of rotating columns 10 and 21. This allows the two rotating columns to smoothly adjust the length and slack of the catheter, actively release or retract a section of the catheter, and always maintain the catheter in a tension-free and safe state, thereby avoiding unplanned extubation and mechanical phlebitis.
[0043] In this preferred embodiment, the movable connection mechanism includes a circular slider 22 and a connecting block 23. The circular slider 22 moves along the placement plate groove 7, allowing the arm fixation ring 8 to be adjusted horizontally according to the actual thickness and comfort of the patient's arm. One end of the connecting block 23 is connected to the circular slider 22, and the other end of the connecting block 23 is connected to the arm fixation ring 8. The placement plate groove 7 is provided with a circular hole 33, which matches the size of the circular slider 22, allowing the circular slider 22 to be disassembled from the circular hole 33. This enables the fixation of the patient's limb at different positions, avoiding prolonged pressure on the same position of the limb. At the same time, the disassembled arm fixation ring 8 is more convenient for cleaning, disinfection, or other nursing operations.
[0044] In this preferred embodiment, the bottom of the fixing frame 1 is provided with a fixing bolt 24, and the bottom of the fixing bolt 24 is provided with a rotating handle 25. The top of the fixing bolt 24 passes through the bottom of the fixing frame 1. By rotating the rotating handle 25 at the bottom, the fixing bolt 24 is driven to rise, so that its top firmly abuts against the edge of the bed, thereby stably fixing the entire device on the bed and avoiding the instability of the catheter due to shaking or displacement of the device during treatment.
[0045] In this preferred embodiment, the fixing frame 1 is provided with a limiting groove 26, the height adjustment plate 2 is located in the limiting groove 26, the height adjustment plate 2 is provided with multiple adjustment holes 27 along the vertical direction, the fixing frame 1 is provided with a limiting hole 28, and a limiting rod 29 is provided on the limiting hole 28. The limiting rod 29 matches the size of the adjustment hole 27. By inserting the limiting rod 29 into the adjustment hole 27 of different heights, the height of the entire device can be adjusted so that it can match the height of the hospital bed of different heights or adapt to the ideal comfortable height of the patient's arm when lying down. At the same time, the limiting groove 26 ensures the vertical stability of the adjustment process. The pin-type structure ensures the stability and reliability of the height after fixing, and the operation is simple and quick.
[0046] In this preferred embodiment, the support plate 3 is provided with a support plate 3 groove, and a square slider 31 is provided in the support plate 3 groove. The top of the square slider 31 is fixedly connected to the nursing plate 4. The square slider 31 slides along the support plate 3 groove to realize the movement of the nursing plate 4 in the horizontal direction. This allows for precise alignment and fine adjustment according to the patient's actual body position and puncture site, ensuring that the patient's arm can be placed on the arc-shaped placement plate 6 at the most natural and comfortable angle. This avoids patient discomfort caused by forced fixation and further improves comfort and compliance.
[0047] In this preferred embodiment, the inner wall of the arm fixation ring 8 is provided with a rubber pad 32, which increases the friction with the skin of the arm and prevents the arm from sliding inside the ring. At the same time, the rubber pad 32 can also buffer the pressure of the arm fixation ring 8 on the patient's limb, avoiding skin indentations, strangulation or discomfort that may be caused by prolonged fixation, and significantly improving the patient's comfort and safety.
[0048] In this preferred embodiment, the arc-shaped placement plate 6 is divided into a front placement plate and a rear placement plate. The front placement plate is fixedly connected to the connecting rod 17, and the rear placement plate is hinged to the front placement plate. When the patient is in a sitting or standing position, the patient's arm will form a certain bending arc. At this time, the front placement plate and the rear placement plate can better fit the bending posture of the patient's arm by hinge, so that the device can adapt to the intravenous treatment of the patient in different positions.
[0049] Working principle: When using this device, the fixing frame 1 is installed on the edge of the bed. By rotating the handle 25, the fixing bolt 24 is tightened against the edge of the bed to secure the device. According to the patient's current position, the height adjustment plate 2 is fixed in the vertical direction using the limiting rod 29. Then, the nursing plate 4 is moved to adjust its position in the horizontal direction so that the arc-shaped placement plate 6 is in the most suitable fixation position for the limb where the patient will receive intravenous treatment. The patient's limb is fixed by the arm fixing ring 8. The catheter at the puncture site passes through the catheter limiting groove 14, close to the side wall of the rotating column 11 and rotating column 10 away from the eccentric connection position, and then continues to pass through the catheter fixing groove 13 to fix the catheter. When the patient's limb moves, the arc-shaped placement plate 6 drives the rotating screw 5 to rotate through the connecting rod 17, thereby causing the rotating column 10 and rotating column 11 to rotate eccentrically. At this time, the catheter is in a relaxed and tension-free safe state, and will not be pulled by limb movement, thus avoiding unplanned catheter removal and mechanical phlebitis.
[0050] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A catheter care and fixation device for intravenous therapy, characterized in that: The device includes a fixing frame (1), a height adjustment plate (2) on the fixing frame (1), a support plate (3) on the height adjustment plate (2), a nursing plate (4) on the support plate (3), a catheter fixing mechanism on the nursing plate (4), the catheter fixing mechanism being used to limit and fix the catheter, an arc-shaped placement plate (6) on the nursing plate (4), a synchronous adjustment mechanism between the arc-shaped placement plate (6) and the catheter fixing mechanism, the synchronous adjustment mechanism being used to protect the catheter from being pulled, a placement plate groove (7) on the arc-shaped placement plate (6), a movable connecting mechanism on the placement plate groove (7), and an arm fixing ring (8) on the movable connecting mechanism for fixing the patient's arm.
2. The catheter care and fixation device for intravenous therapy according to claim 1, characterized in that: The catheter fixing mechanism includes a catheter fixing plate (9), a rotating column one (10), a rotating column two (11), and a catheter limiting plate (12); the bottom of the catheter fixing plate (9) and the catheter limiting plate (12) are fixedly connected to the nursing plate (4), and the bottom of the rotating column one (10) and the rotating column two (11) are both connected to the synchronous adjustment mechanism and are located between the catheter fixing plate (9) and the catheter limiting plate (12).
3. The catheter care and fixation device for intravenous therapy according to claim 2, characterized in that: The catheter fixing plate (9) is provided with a catheter fixing groove (13), and the catheter limiting plate (12) is provided with a catheter limiting groove (14). The catheter fixing groove (13) matches the size of the catheter, and the size of the catheter limiting groove (14) is larger than that of the catheter fixing groove (13).
4. The catheter care and fixation device for intravenous therapy according to claim 3, characterized in that: The number of the catheter fixing grooves (13) is multiple, and the size of the multiple catheter fixing grooves (13) is set according to the size of different catheters, so that the catheter fixing grooves (13) can be used for different sizes and types of catheters.
5. A catheter care and fixation device for intravenous therapy according to claim 2, characterized in that: The synchronous adjustment mechanism includes a rotating screw (5), a connecting rod one (15), a connecting rod two (16), a connecting rod three (17), a gear one (18), a gear two (19), a gear three (20), and two telescopic springs (21); one end of the connecting rod one (15) is eccentrically connected to the rotating column one (10), and the other end is connected to the gear one (18); one end of the connecting rod two (16) is eccentrically connected to the rotating column two (11), and the other end is connected to the gear two (19); the rotating column one... (10) and the eccentric connection direction of the rotating column (11) are opposite. One end of the connecting rod (17) is fixedly connected to the arc-shaped placement plate (6), and the other end is connected to the gear (20). The two ends of the rotating screw (5) are respectively connected to the telescopic spring (21). The ends of the two telescopic springs (21) away from the rotating screw (5) are connected to the two opposite side walls of the nursing plate (4). The rotating screw (5) meshes with the gear (18), gear (29) and gear (30) respectively.
6. The catheter care and fixation device for intravenous therapy according to claim 1, characterized in that: The movable connection mechanism includes a circular slider (22) and a connecting block (23); the circular slider (22) moves along the placement plate groove (7), one end of the connecting block (23) is connected to the circular slider (22), and the other end of the connecting block (23) is connected to the arm fixing ring (8). The placement plate groove (7) is provided with a circular hole (33), and the circular hole (33) matches the size of the circular slider (22), so that the circular slider (22) can be disassembled from the circular hole (33).
7. The catheter care and fixation device for intravenous therapy according to claim 1, characterized in that: The bottom of the fixing frame (1) is provided with a fixing bolt (24), the top of the fixing bolt (24) passes through the bottom of the fixing frame (1) to abut against the edge of the bed, and the bottom of the fixing bolt (24) is provided with a rotating handle (25).
8. The catheter care and fixation device for intravenous therapy according to claim 1, characterized in that: The fixed frame (1) is provided with a limiting through groove (26), the height adjustment plate (2) is located in the limiting through groove (26), the height adjustment plate (2) is provided with a plurality of adjustment holes (27) in the vertical direction, the fixed frame (1) is provided with a limiting hole (28), the limiting hole (28) is provided with a limiting rod (29), the limiting rod (29) and the size of the adjusting hole (27) are matched to adjust the height of the height adjustment plate (2).
9. A catheter care and fixation device for intravenous therapy according to claim 1, characterized in that: The support plate (3) is provided with a support plate (3) groove, and a square slider (31) is provided in the support plate (3) groove. The top of the square slider (31) is fixedly connected to the nursing plate (4). The square slider (31) slides along the support plate (3) groove to realize the movement of the nursing plate (4) in the horizontal direction.
10. A catheter care and fixation device for intravenous therapy according to claim 1, characterized in that: A rubber pad (32) is provided on the inner wall of the arm fixing ring (8).