Hand fixing device for pediatrics
By designing an adjustable-length pediatric hand immobilization device, the problem of improper hand immobilization during pediatric intravenous infusion was solved. It provides fist-clenching assistance and warmth retention, improving the smoothness of infusion and patient comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING SHIJITAN HOSPITAL CAPITAL MEDICAL UNIVERSITY
- Filing Date
- 2025-04-21
- Publication Date
- 2026-07-21
AI Technical Summary
Existing hand immobilization devices cannot effectively secure the hand during pediatric intravenous infusions, leading to needle displacement, extravasation of medication, and infusion backflow. Furthermore, they lack fist-clenching assistance and warmth retention functions, affecting treatment outcomes and patient comfort.
A pediatric hand immobilization device has been designed, including an adjustable-length base and extension plate, equipped with a flexible plate and restraint straps, which can adjust the degree of bending and number of turns before and after puncture, and is equipped with heating and warming functions. It is ergonomic and provides comfortable immobilization.
It effectively stabilizes the hand during pediatric intravenous infusion, reduces needle displacement and extravasation, improves infusion smoothness and patient comfort, and enhances the convenience of medical and nursing procedures.
Smart Images
Figure CN224523737U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and more specifically, to a pediatric hand fixation device. Background Technology
[0002] Intravenous infusion is a method of delivering large amounts of sterile fluids, electrolytes, and medications into the body via a vein using atmospheric pressure and hydrostatic pressure. Existing infusion sets mainly consist of plastic needles, infusion tubing, Murphy drip tubes, flow control switches, and puncture needles.
[0003] In clinical practice, intravenous infusions are mostly administered via venipuncture at the back of the hand. However, the hand is frequently in motion, which can easily cause the needle to shift within the blood vessel, leading to leakage. Once leakage occurs, a second puncture is required, causing unnecessary pain to the patient. Furthermore, it can easily lead to backflow of the infusion, making the infusion impossible. This is especially true when administering infusions to children, as children have poor self-control and become easily agitated if they remain still for a long time, causing them to move their hands and leading to the aforementioned problems, which is detrimental to treatment.
[0004] When administering intravenous infusions to the back of the hand, the patient's hand or fingers may move, causing the needle to bulge, dislodge, or the medication to leak out. This causes pain to the patient and increases the difficulty of the medical staff's work. This situation occurs more frequently in pediatrics than in other departments, partly because children are young, and partly because hospitals lack safe and effective fixation devices.
[0005] Currently, most hand infusion fixation devices used in clinical practice use wooden or plastic boards and straps to fix the hand. While this can solve some problems, it also has some shortcomings: it does not have a fist-clenching function, which means that fist preparation before and during puncture, as well as finger and wrist joint fixation after puncture, cannot be completed simultaneously; it lacks warmth and blood circulation-promoting effects, resulting in poor patient comfort.
[0006] Therefore, there is an urgent need for a pediatric hand fixation device that can assist in fist clenching, keep warm, and promote blood circulation in the treatment room where intravenous infusion is performed on the back of the hand. Utility Model Content
[0007] In view of this, the present invention provides a pediatric hand fixation device that can assist in fist clenching, making it easier for medical staff to perform punctures. It is easy to use, provides warmth, and improves user comfort.
[0008] This application provides a pediatric hand immobilization device, including a base, an extension plate slidably connected to the base, and an adjustable sliding distance between the extension plate and the base; and detachable restraint straps fixed at intervals on both sides of the base.
[0009] A flexible plate is slidably connected to the top surface of the base. The curved part of the flexible plate is located outside the base. When the curved part is in a flat state, it is in contact with the top surface of the extension plate. When the curved part is in a bent state, the degree of bending and the number of bends are adjustable.
[0010] Optionally, the top surface of the base is provided with symmetrical slots, and the flexible plate slides within the space formed by the slots and the base.
[0011] Optionally, a limiting member is also included, which is used to limit the sliding distance between the extension plate and the base.
[0012] Optionally, the limiting member is U-shaped, and a plurality of first limiting grooves are spaced apart on the side wall of the extension plate, and a second limiting groove is provided on the base. The first limiting grooves and the second limiting grooves are adapted to the limiting member.
[0013] Optionally, a limiting portion is fixed to the top of the limiting member.
[0014] Optionally, a number of inverted trapezoidal protrusions are fixed at intervals on the bottom surface of the curved portion.
[0015] Optionally, an elastic body is provided in the internal space formed when the curved portion is in a curved state.
[0016] Optionally, the restraint strap assembly includes a first strap and a second strap, one end of the first strap is fixed with a first connecting portion, one end of the second strap is fixed with a second connecting portion, and the first connecting portion and the second connecting portion are detachably connected.
[0017] Optionally, the first strap is provided with a zipper structure at the end away from the first connecting part, the second strap is provided with the zipper structure at the end away from the second connecting part, and a heating device is provided inside the first strap and the second strap.
[0018] Optionally, a heating device is connected to the bottom of the extension plate and the bottom of the base.
[0019] Compared with the prior art, the pediatric hand fixation device provided by this utility model achieves at least the following beneficial effects:
[0020] This utility model provides a pediatric hand immobilization device in different sizes, allowing users to select the appropriate size based on the patient's body size. The length of the device is adjusted by changing the sliding distance between the extension plate and the base in the first direction (X). During use, without interfering with medical staff performing procedures such as hand bandaging, disinfection, and injection, the device is secured to the patient's arm using a restraint strap assembly. Before injection, the bending portion of the flexible plate is adjusted to the appropriate degree and number of bends according to the patient's needs, with the patient's hand gripping the bent portion. After the injection is completed, the patient no longer grips the bent portion, which then flattens out. The sliding distance between the flexible plate and the base is adjusted so that the bent portion fits snugly against the top surface of the extension plate. The patient's hand is then secured to the extension plate using the restraint strap assembly or a medical bandage, completing the fixation and use of the pediatric hand immobilization device. A heating device heats the infusion fluid to avoid irritating the patient. When it's cold, the heating device warms the patient's hands and arms, improving the patient's comfort.
[0021] Of course, any product implementing this utility model does not necessarily need to achieve all the technical effects described above at the same time.
[0022] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description
[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.
[0024] Figure 1 This is a schematic diagram of the pediatric hand fixation device provided by this utility model when the extension plate is not pulled out;
[0025] Figure 2 This is a schematic diagram of the structure of the extension plate of the pediatric hand fixation device provided by this utility model when it is pulled out;
[0026] Figure 3 This is a schematic diagram of the structure of placing an elastomer on the extension plate of the pediatric hand fixation device provided by this utility model;
[0027] Figure 4 This utility model provides Figure 1 Enlarged view of point A;
[0028] Figure 5 This utility model provides Figure 2 Enlarged view of point B;
[0029] Figure 6 This is a structural schematic diagram of the limiting component provided by this utility model;
[0030] Figure 7 This is a bottom view of the limiting component provided by this utility model;
[0031] Figure 8 This is a cross-sectional view of the first strap provided by this utility model;
[0032] The components are as follows: 10. Base; 11. Slot; 12. First limiting slot; 13. Heating device; 20. Extension plate; 21. Second limiting slot; 30. Flexible plate; 31. Bending part; 32. Protruding strip; 33. Elastomer; 40. Limiting component; 41. Limiting part; 42. Heating device; 43. First strap; 44. Second strap; 45. First connecting part; 46. Second connecting part; 47. Zipper structure. Detailed Implementation
[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.
[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.
[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.
[0036] In all the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
[0038] by Figure 1 For reference, the first direction X is the horizontal direction from the base 10 to the extension plate 20; the second direction Y is the horizontal direction of the short side of the base 10; and the third direction Z is the vertical upward direction from the base 10 to the flexible plate 30. The first direction X, the second direction Y, and the third direction Z intersect each other perpendicularly.
[0039] In one alternative embodiment, refer to Figures 1-8The pediatric hand fixation device provided in this embodiment includes a base 10, an extension plate 20 slidably connected to the base 10, and the sliding distance between the extension plate 20 and the base 10 is adjustable; detachable restraint straps are fixed at intervals on both sides of the base 10.
[0040] A flexible plate 30 is slidably connected to the top surface of the base 10. The curved part 31 of the flexible plate 30 is located outside the base 10. When the curved part 31 is in a flat state, it is in contact with the top surface of the extension plate 20. When the curved part 31 is in a bent state, the degree of bending and the number of bending turns can be adjusted.
[0041] Understandably, pediatric hand immobilization devices come in different sizes, and the appropriate size can be selected based on the patient's body size. The length of the pediatric hand immobilization device can be changed by adjusting the sliding distance between the extension plate 20 and the base 10 in the first direction X. When in use, without interfering with medical staff performing procedures such as skin bandaging, disinfection, and injection on the patient's hand, the pediatric hand fixation device is secured to the patient's arm using the restraint strap assembly. Before injection, the bending part 31 of the flexible plate 30 is adjusted to the appropriate degree and number of bends according to the patient's needs, with the patient holding the bending part 31 in a bent state. After the medical staff completes the infusion puncture, the patient no longer holds the bending part 31, and the bending part 31 changes from a bent state to a flat state. The sliding distance between the flexible plate 30 and the base 10 is adjusted so that the bending part 31 is in a flat state and fits against the top surface of the extension plate 20. Then, the patient's hand can be fixed to the extension plate 20 using the restraint strap assembly or medical bandage, completing the fixation and use of the pediatric hand fixation device.
[0042] It should be noted that the degree of bending and the number of bends of the bent portion 31 can be as follows: Figure 1 The C-shape shown facilitates the transition between gripping and extending hand positions; it can also be adjusted according to actual needs.
[0043] It should be noted that the base 10 and extension plate 20 can be made of wood or plastic to facilitate disinfection and avoid cross-infection. The base 10 and extension plate 20 have several ventilation holes to prevent the patient's hands from getting stuffy and sweaty. The flexible plate 30 is made of a breathable material, can be bent and deformed, and is resistant to pressure and tension.
[0044] In one alternative embodiment, refer to Figures 1-3 The base 10 has symmetrical slots 11 on its top surface, and the flexible plate 30 slides in the space formed by the slots 11 and the base 10.
[0045] It is understandable that the flexible plate 30 slides along the first direction X within the space formed by the symmetrically arranged slot 11 and the base 10, changing the adjustable length of the bending part 31, so as to facilitate the adjustment of the bending degree and the number of bending turns of the bending part 31 when it is bent.
[0046] In one alternative embodiment, refer to Figures 1-5 It also includes a limiting member 40, which is used to limit the sliding distance between the extension plate 20 and the base 10. Specifically, the limiting member 40 is U-shaped, and a plurality of first limiting grooves 12 are provided at intervals on the side wall of the extension plate 20, and a second limiting groove 21 is provided on the base 10. The first limiting grooves 12 and the second limiting grooves 21 are adapted to the limiting member 40.
[0047] Understandably, the limiting member 40 is used to limit the sliding distance between the extension plate 20 and the base 10. In the fist-clenching preparation state before and during puncture, in order to prevent the extension plate 20 from affecting the puncture, the distance between the extension plate 20 and the base 10 in the first direction is the shortest. The first limiting groove 12 on the extension plate 20 closest to the base 10 and the second limiting groove 21 on the base 10 form a U-shaped space. The matching U-shaped limiting member 40 is inserted into the U-shaped space to limit the sliding distance between the extension plate 20 and the base 10. After the puncture is completed, the patient's hand no longer holds the curved part 31, and the curved part 31 changes from a bent state to an extended state. At this time, the limiting member 40 is removed from the formed "U"-shaped space, and the extension plate 20 is pulled along the first direction X. When it is pulled to the appropriate position, it stops. The other first limiting groove 12 of the extension plate 20 and the second limiting groove 21 on the base 10 form a new "U"-shaped space. The matching "U"-shaped limiting member 40 is inserted into the newly formed "U"-shaped space to limit the sliding distance between the extension plate 20 and the base 10.
[0048] It should be noted that several first limiting grooves 12 are spaced apart on the side wall of the extension plate 20, which together with the second limiting grooves 21 on the base 10 form different "U"-shaped spaces, so that the limiting member 40 can limit the different sliding distances between the extension plate 20 and the base 10.
[0049] In one alternative embodiment, refer to Figures 4-7 The top of the limiting member 40 is fixed with a limiting part 41.
[0050] Understandably, to facilitate the insertion and removal of the limiting member 40, a limiting part 41 is fixed to the top of the limiting member 40, and the cross-sectional area of the limiting part 41 is larger than the cross-sectional area of the limiting member 40. For example... Figure 3As shown, when the top surface of the extension plate 20 is lower than the top surface of the base 10 by a height difference, the bottom surface of the limiting part 41 is in close contact with the top surface of the extension plate 20 and the top surface of the base 10. At this time, the shape of the limiting part 41 also changes, and the height of the part of the limiting part 41 located on the top surface of the extension plate 20 is higher than the height of the part of the limiting part 41 located on the top surface of the base 10.
[0051] In one alternative embodiment, refer to Figures 1-5 Several inverted trapezoidal protrusions 32 are fixed at intervals on the bottom surface of the curved part 31.
[0052] Understandably, in order to enable the bent portion 31 in a bent state to withstand the force generated by hand gripping, a number of inverted trapezoidal protrusions 32 are fixed at intervals on the bottom surface of the bent portion 31. When the bent portion 31 is in a bent state, the sides of the spaced inverted trapezoidal protrusions 32 fit together to bear and distribute the force generated by hand gripping.
[0053] In one alternative embodiment, refer to Figures 1-3 An elastic body 33 is provided in the internal space formed when the curved part 31 is in a curved state.
[0054] It is understandable that when the patient's hand is large, the force generated by the hand grip is too great, and the internal space of the bent part 31 in the bent state is too large, which may cause deformation under force. In order to enable the bent part 31 in the bent state to withstand the force generated by the hand grip, an elastic body 33 can be provided in the internal space formed when the bent part 31 is in the bent state to fill the internal space of the bent part 31 and avoid deformation under force.
[0055] It's important to note that, according to ergonomic principles, the optimal resting position for the human body is when the back of the hand is held at a 15-30 degree angle to the table, in a semi-clenched fist position. This means that directly fixing the patient's hand to the extension board 20 does not fully relax the wrist joint. The extensor muscles of the wrist and forearm remain in a state of tension. Influenced by the forearm muscles, the triceps and deltoid muscles of the upper arm are also simultaneously subjected to pulling forces, resulting in a persistently tense shoulder joint. Over time, this can easily lead to soreness and fatigue in the wrist and shoulder. Patients often try to alleviate this discomfort by changing positions, which can cause issues such as the needle not dripping or needle bulging. Furthermore, tense muscles increase resistance to the medication's entry into the body, further contributing to these problems. Therefore, when the infusion is performed after the puncture is completed, the elastomer 33 is placed on the flexible plate 30 and located under the patient's palm. The elastomer 33 supports the palm under the palm, which conforms to the ergonomic principle, improves the patient's comfort during infusion, and reduces the occurrence of needle dislodgement and bulging.
[0056] The elastomer 33 can deform within a certain range, and the interior of the elastomer 33 can be filled with some compressible and flowable particles.
[0057] In one alternative embodiment, refer to Figures 1-3 The restraint strap assembly includes a first strap 43 and a second strap 44. One end of the first strap 43 is fixed with a first connecting part 45, and one end of the second strap 44 is fixed with a second connecting part 46. The first connecting part 45 and the second connecting part 46 are detachably connected.
[0058] Understandably, to facilitate fixing the base 10 to the patient's arm, a first strap 43 and a second strap 44 are symmetrically fixed to the two long sides of the base 10, respectively. The first strap 43 and the second strap 44 are fixed together by connecting the first connecting part 45 and the second connecting part 46. The first connecting part 45 and the second connecting part 46 can be adhesive Velcro. The Velcro has a certain length, and the appropriate sticking position can be selected according to the thickness of the patient's arm to connect the first strap 43 and the second strap 44.
[0059] In one alternative embodiment, refer to Figures 1-3 , Figure 8 The first strap 43 has a zipper structure 47 at the end away from the first connecting part 45, and the second strap 44 has a zipper structure 47 at the end away from the second connecting part 46. Both the first strap 43 and the second strap 44 are equipped with heating devices 42.
[0060] Understandably, the decision to heat the IV fluid during infusion depends on the type of medication. Some medications cannot be heated, while others can. If the infused medication is prone to decomposition or denaturation, heating is not recommended. If the medication is relatively stable and can tolerate a certain temperature, it can be heated appropriately during infusion. If the infusion is for an infectious disease and involves antibiotics such as cephalosporins or penicillins, heating is prohibited to avoid affecting the medication's efficacy. Additionally, vitamin C should not be heated. If the infusion is for poor dietary intake and requires fluid replacement, such as glucose injection, sodium chloride injection, or potassium chloride injection, appropriate heating is acceptable and usually will not significantly affect the medication's properties or treatment effectiveness.
[0061] Therefore, when heating is possible, unzip the zipper and insert the heating device 42 into the first strap 43 and the second strap 44 to heat the infusion tubing fixed to the arm.
[0062] It should be noted that the heating device 42 can be a strip-shaped heat pack that can be inserted into the first strap 43 and the second strap 44, making it easy to replace and remove.
[0063] In one alternative embodiment, refer to Figure 1 A heating device 13 is connected to the bottom of the extension plate 20 and the bottom of the base 10.
[0064] It should be noted that in cold weather, prolonged contact between the patient's hands and arms and the extension board 20 and the base 10 may cause them to catch a cold and feel unwell. To address this, a heating device 13 can be connected to the bottom of the extension board 20 and the base 10 for heating. Specifically, the heating device 13 can be a heat patch, which is attached to the bottom of the extension board 20 and the base 10.
[0065] Use of pediatric hand immobilization devices:
[0066] In use, without interfering with medical staff performing procedures such as hand bandaging, disinfection, and injection, the pediatric hand fixation device is secured to the patient's arm using a restraint strap assembly. Before injection, the sliding distance of the flexible plate 30 along the first direction X within the space formed by the symmetrically arranged slots 11 and the base 10 is adjusted as needed to change the adjustable length of the curved section 31. Then, the appropriate degree of curvature and number of bends are adjusted according to the patient's needs, ensuring the patient's hand grips the curved section 31 in a bent state for easy puncture. To prevent deformation of the curved section 31 due to hand gripping force, several inverted trapezoidal protrusions 32 are fixed at intervals on the bottom surface of the curved section 31. When the curved section 31 is in a bent state, the sides of the intervald inverted trapezoidal protrusions 32 fit together to absorb and distribute the force generated by hand gripping. An elastic body 33 is placed within the internal space formed when the curved section 31 is in a bent state to fill the internal space of the curved section 31 and prevent deformation of the curved section 31 under stress.
[0067] In the fist-clenched preparation state before and during puncture, in order to prevent the extension plate 20 from affecting the puncture, the distance between the extension plate 20 and the base 10 in the first direction is the shortest. The first limiting groove 12 on the extension plate 20 closest to the base 10 and the second limiting groove 21 on the base 10 form a U-shaped space. The matching U-shaped limiting member 40 is inserted into the U-shaped space to limit the sliding distance between the extension plate 20 and the base 10. After the puncture is completed, the patient's hand no longer holds the curved part 31, and the curved part 31 changes from a bent state to an extended state. At this time, the limiting member 40 is removed from the formed "U"-shaped space, and the extension plate 20 is pulled along the first direction X. When it is pulled to the appropriate position, it stops. The other first limiting groove 12 of the extension plate 20 and the second limiting groove 21 on the base 10 form a new "U"-shaped space. The matching "U"-shaped limiting member 40 is inserted into the newly formed "U"-shaped space to limit the sliding distance between the extension plate 20 and the base 10.
[0068] After the medical staff completes the infusion puncture, the patient no longer holds the bent part 31, and the bent part 31 changes from a bent state to a flat state. The sliding distance between the flexible plate 30 and the base 10 is adjusted so that the bent part 31 is in the flat state and fits against the top surface of the extension plate 20. The elastic body 33 is placed on the flexible plate 30 and is located under the patient's palm, supporting the palm. Then, the patient's hand can be fixed to the extension plate 20 by the restraint strap group or medical bandage, thus completing the fixation and use of the pediatric special hand fixation device.
[0069] When the intravenous fluid can be heated, unzip the zipper and insert the heating device 42 into the first strap 43 and the second strap 44 to heat the intravenous tubing fixed to the arm. A heating device 13 is connected to the bottom of the extension plate 20 and the bottom of the base 10 to warm the patient's hands and arm.
[0070] The heating pads involved in the above embodiments are products using existing technology.
[0071] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.
Claims
1. A pediatric hand immobilization device, characterized in that, Includes a base, on which an extension plate is slidably connected, the sliding distance between the extension plate and the base being adjustable; and on both sides of the base, detachably connected restraint straps are fixed at intervals. A flexible plate is slidably connected to the top surface of the base. The curved part of the flexible plate is located outside the base. When the curved part is in a flat state, it is in contact with the top surface of the extension plate. When the curved part is in a bent state, the degree of bending and the number of bending turns are adjustable.
2. The pediatric hand immobilization device according to claim 1, characterized in that, The base has symmetrical slots on its top surface, and the flexible plate slides within the space formed by the slots and the base.
3. The pediatric hand immobilization device according to claim 1, characterized in that, It also includes a limiting member, which is used to limit the sliding distance between the extension plate and the base.
4. The pediatric hand immobilization device according to claim 3, characterized in that, The limiting member is U-shaped, and a plurality of first limiting grooves are spaced apart on the side wall of the extension plate. A second limiting groove is provided on the base. The first limiting grooves and the second limiting grooves are adapted to the limiting member.
5. The pediatric hand immobilization device according to claim 3, characterized in that, The top of the limiting member is fixed with a limiting part.
6. The pediatric hand immobilization device according to claim 1, characterized in that, Several inverted trapezoidal protrusions are fixed at intervals on the bottom surface of the curved section.
7. The pediatric hand immobilization device according to claim 1, characterized in that, An elastic body is provided within the internal space formed when the curved portion is in a curved state.
8. The pediatric hand immobilization device according to claim 1, characterized in that, The restraint strap assembly includes a first strap and a second strap. One end of the first strap is fixed with a first connecting part, and one end of the second strap is fixed with a second connecting part. The first connecting part and the second connecting part are detachably connected.
9. The pediatric hand immobilization device according to claim 8, characterized in that, The first strap has a zipper structure at the end away from the first connecting part, and the second strap has the zipper structure at the end away from the second connecting part. Heating devices are provided inside the first strap and the second strap.
10. The pediatric hand immobilization device according to claim 1, characterized in that, Heating devices are connected to the bottom of the extension plate and the bottom of the base.