A hand fixator for patient treatment

Abstract

The present invention relates to the technical field of medical equipment, and discloses a hand fixator for patient treatment, comprising a base plate, with slide rails fixedly provided on both sides of the base plate, the slide rails comprising an inclined rail section and an arcuate rail section, the upper end of the inclined rail section protruding from the base plate, the inclined rail section being connected to the arcuate rail section; a slider is provided on the slide rail; a fixing belt is connected between the two sliders, and the fixing belt is located above the base plate; a ratchet is rotatably provided at the bottom of the base plate, and a torsion spring is connected between the ratchet and the base plate; a pawl is provided on the outer side of the ratchet; a mounting seat is rotatably provided on the pawl, and the mounting seat is connected to the base plate in a radially sliding manner along the ratchet, the pawl is rotatably connected to the mounting seat, and a torsion spring is connected between the pawl and the mounting seat; a wheel is fixedly connected to the ratchet, and two pull ropes are wound around the wheel, and the two pull ropes are fixedly connected to two sliders. The present invention can solve the problem that during the current infusion operation, a bandage or gauze needs to be used to tie the patient's hand to restrict hand movement, which is cumbersome to operate and inconvenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a hand fixator for patient treatment. Background Art

[0002] In current medical practice, during treatment, especially during infusion operations, it is very easy for patients to move their hands at will, resulting in needle dislodgment or displacement. This is especially true for some agitated patients or young children whose movements are difficult to control and whose behaviors are difficult to restrain. The above situation often occurs, which not only easily causes abnormal pain to patients, but also prolongs the duration of treatment and affects the treatment effect.

[0003] The traditional solution to the above problem is for medical staff to tie up the patient's hands, such as using bandages or gauze to wrap around the patient's hands to limit their range of motion. However, in actual operation, this treatment method requires the patient's hands to be tied up every time after the acupuncture is completed, which is very inconvenient to use. In addition, it is difficult to control the strength during tying, and it is very easy to tie too tightly, resulting in poor hand comfort, or too loosely, making it difficult to achieve the purpose of effective fixation. Summary of the Invention

[0004] The present invention aims to provide a hand fixator for patient treatment to solve the problem that during the current infusion operation, a bandage or gauze needs to be used to tie the patient's hand to restrict hand movement, which is cumbersome to operate and inconvenient to use.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a patient treatment hand fixator, comprising a base plate, with slide rails fixedly provided on both sides of the base plate, the slide rails comprising an inclined rail section and an arcuate rail section, the upper end of the inclined rail section protruding from the upper surface of the base plate, the lower end of the inclined rail section connected to the arcuate rail section, and the arcuate rail section being located below the base plate; sliders are slidably provided on the slide rails, the sliders being able to slide between the inclined rail section and the arcuate rail section, a spring being connected between the upper end of the slide rail and the slider; a fixing belt is connected between the two sliders, and the fixing belt is located above the base plate;

[0006] A ratchet is rotatably provided at the bottom of the base plate, and a torsion spring is connected between the ratchet and the base plate; a pawl is provided on the outer side of the ratchet, and the pawl is engaged between the ratchet teeth of the ratchet; a mounting seat is rotatably provided on the pawl, and the mounting seat is slidably connected to the base plate along the radial direction of the ratchet, and the pawl and the mounting seat are rotatably connected, and a torsion spring is connected between the pawl and the mounting seat;

[0007] A wheel disc is fixedly connected to the ratchet, two pull ropes are wound around the wheel disc, and ends of the two pull ropes away from the wheel disc are fixedly connected to the two sliders respectively.

[0008] The principle and advantages of this solution are as follows: the baseplate is used to place the patient's hand. When the patient's hand needs to be secured during an infusion, the wheel is rotated, causing the wheel to rotate and wind the drawstring. The drawstring pulls the sliders on the slide rails. The two sliders move from the inclined track section to the curved track section, pressing the fixation strap against the patient's hand to secure it. As the sliders slide from the top to the bottom of the baseplate, the ends of the fixation strap bend downward, simulating the process of strapping the fixation strap to the patient's hand and ensuring that the fixation strap can effectively secure the hand.

[0009] During the rotation of the wheel, it drives the fixed ratchet to rotate, and the pawl continuously slides over the ratchet teeth of the ratchet. Combined with the patient's comfort level and the tightness of the binding, when the slider moves to the appropriate position, the wheel stops rotating. At this time, the ratchet stops rotating, and the pawl is stuck between the ratchet teeth of the ratchet to prevent the ratchet from reversing under the action of the torsion spring, thereby locking the ratchet. At this time, the wheel is also fixed along with the ratchet, and the position of the slider is also locked, so that the fixation belt remains in the appropriate position and the patient's hand is firmly fixed.

[0010] When the fixing force of the fixing belt is large, or the fixing belt needs to be loosened after the infusion is completed, the pawl is slid away from the ratchet, and the ratchet can rotate in the opposite direction under the action of the potential energy of the torsion spring to release the pull rope. After the pull rope is released, the slider can slide in the opposite direction along the slide rail under the action of the spring, thereby loosening the fixing belt to adjust the fixing force of the fixing belt on the hand, or even release the fixation of the fixing belt on the hand.

[0011] The advantages of this solution are:

[0012] 1. The sliding of the slider drives the fixation belt to move. Combined with the design of the arc track section, the two ends of the fixation belt automatically bend downward, simulating the banding process, so that the fixation belt can automatically and effectively fix the patient's hand. There is no need for manual bandaging and fixation, making the operation more convenient.

[0013] 2. Since the fixing force of the fixation belt on the patient's hand is controlled by the final position of the slider, the final position of the slider can be flexibly selected according to the patient's force level and hand size during the fixation process, making the device suitable for a wider range of people;

[0014] 3. To fix the patient's hand, you only need to rotate the wheel to operate. During the rotation, you can stop and adjust at any time according to the patient's feeling of the fixation strength. At the same time, the wheel can be rotated with one hand, which makes bandaging more convenient and it is also more convenient to operate when adjusting the fixation strength;

[0015] 4. By sliding the pawl, you can release the lock on the ratchet, and then make the slider slide in the opposite direction, so as to adjust the fixing force of the fixing belt or automatically release the fixing belt from the hand. When operating, it can be handled with one hand, and the release operation is also more convenient.

[0016] Preferably, as an improvement, an adjusting rod is rotatably provided at the bottom of the base plate, a knot is fixed on the adjusting rod, a small gear is fixed on the knot, a protective cover is fixedly connected to the end of the base plate, the protective cover is retractable and foldable, a large gear is fixedly connected to the end of the protective cover away from the base plate, the large gear is rotatably connected to the base plate, the large gear is engaged with the small gear, and when the protective cover is opened, the slide rail is located inside the protective cover.

[0017] With the above solution, rotating the adjustment rod causes the knot to rotate the small gear, which in turn rotates the large gear, causing the end of the protective cover to rotate. This opens the protective cover and forms a protective shield over the hand, preventing external forces from accidentally contacting the hand and causing the needle to fall out or shift. The protective cover is a retractable and foldable structure, making it easier to open and close for storage. When the protective cover is open, the slide rails are located underneath. These rails not only support the protective cover, ensuring its stability during operation, but also act as a barrier between the protective cover and the hand surface, maintaining an appropriate distance from the hand surface. This prevents the protective cover from directly contacting and rubbing the hand, while also providing space for the protective cover to sag and deform when subjected to external forces, thus enhancing hand protection. The small gear and large gear in this solution refer to two gears with relatively small diameters. This allows the meshing action between the small gear and large gear to reduce the number of rotations of the adjustment rod to the protective cover. As a result, after several rotations of the adjustment rod, the large gear only causes the protective cover to swing slightly, opening the protective cover.

[0018] Preferably, as an improvement, the adjusting rod is a double-ended screw, both ends of the double-ended screw are provided with nut sleeves, the nut sleeves are threadedly connected to the screw, and the nut sleeves are slidably connected to the base plate; a traction rope is connected between the two sliders, and a sliding column is provided at the bottom of the base plate, the sliding column can slide along the length direction of the base plate, a spring is connected between the sliding column and the base plate, the middle part of the traction rope is fixed on the sliding column, the traction rope is located between the two nut sleeves, and the two nut sleeves can slide along the axial direction of the screw and clamp the traction rope.

[0019] With this solution, as the two sliders move closer along the rails, the tension between the ends of the traction rope decreases. At this point, the sliding post, under the action of the spring, slides on the base plate, keeping the traction rope pulled straight. Once the sliders are in the desired position, the adjustment rod is rotated to open the protective cover. The two nuts, driven by the threads on the adjustment rod, move closer along the axial direction of the rod. Finally, the two nuts come together, clamping the traction rope in place. This further secures the slider in place, preventing the slider from accidentally retracting and loosening the retaining strap by contacting the pawl during use, thus providing auxiliary locking of the slider.

[0020] Preferably, as an improvement, a plurality of arranged and distributed protrusions are provided on opposite sides of the two nut sleeves, and the protrusions on the two nut sleeves are staggered, with the protrusions on one nut sleeve facing the gap between adjacent protrusions on the other nut sleeve.

[0021] Through the above solution, the setting of the protrusion makes it possible to better fix the traction rope when the traction rope is clamped and fixed between the two nut sleeves, thereby improving the locking effect of the slider position.

[0022] Preferably, as an improvement, arc-shaped baffles are provided on both side edges of the slide rail, and there is a gap between the two sets of baffles for the slider to pass through. The pull rope is located between the slide rail and the baffles and extends along the slide rail.

[0023] Through the above solution, the baffle is used to limit the pull rope, so that the pull rope can only extend and move along the slide rail, avoiding the pull rope from being entangled and knotted and entangled with the external structure, which is more convenient for practical application.

[0024] Preferably, as an improvement, the slide rail, ratchet, pawl, pull rope and fixing belt are provided in two groups that are symmetrically distributed front to back.

[0025] Through the above scheme, the two groups of structures fix the front and back sides of the acupuncture site on the hand respectively, which can improve the fixation effect on the hand and prevent the needle from falling off or shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a front view of the substrate.

[0027] Figure 2 This is a bottom view of the embodiment of the present invention, showing the state when the slider moves to below the substrate.

[0028] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0029] Figure 4 A cross-sectional view of the slide rail.

[0030] Figure 5FIG. 1 is a side view of the base plate, showing the state in which the protective cover is opened.

[0031] Figure 6 FIG. 4 is a front view of the substrate, showing a state where the slider moves to below the substrate. DETAILED DESCRIPTION

[0032] The following is further described in detail through specific embodiments, but the embodiments of the present invention are not limited thereto. Unless otherwise specified, the technical means used in the following embodiments are conventional means well known to those skilled in the art; the experimental methods used are all conventional methods; and the materials, reagents, etc. used are all commercially available.

[0033] The figure marks in the drawings of the specification include: base plate 1, slide rail 2, inclined rail section 3, arc track section 4, slider 5, spring 6, fixing belt 7, ratchet 8, pawl 9, mounting seat 10, wheel 11, pull rope 12, adjusting rod 13, small gear 14, large gear 15, protective cover 16, nut sleeve 17, traction rope 18, sliding column 19, protrusion 20, baffle 21.

[0034] In this embodiment, a patient is treated with a hand fixator, such as Figure 1 and Figure 2 As shown, the base 1 is used to place the patient's hand. Slide rails 2 are fixed on both sides of the base 1. The slide rails 2 include an inclined track section 3 and an arc track section 4. The upper end of the inclined track section 3 protrudes from the upper surface of the base 1, and the lower end of the inclined track section 3 is connected to the arc track section 4, which is located below the base 1. Slide blocks 5 are slidably mounted on the slide rails 2. The slide blocks 5 can slide between the inclined track section 3 and the arc track section 4. A spring 6 is connected between the upper end of the slide rail 2 and the slide blocks 5. A fixing belt 7 is fixedly connected between the two slide blocks 5 and is located above the base 1.

[0035] Combine Figure 2 As shown, a ratchet 8 is rotatably mounted on the bottom of the base plate 1, with a torsion spring connected between the ratchet 8 and the base plate 1; a pawl 9 is mounted on the outside of the ratchet 8, which is engaged between the teeth of the ratchet 8; a mounting base 10 is rotatably mounted on the pawl 9, which is slidably connected to the base plate 1 along the radial direction of the ratchet 8. The pawl 9 and the mounting base 10 are rotatably connected. In this embodiment, the pawl 9 and the mounting base 10 are hingedly connected. It is easy to understand that through a reasonable structural arrangement, the pawl 9 can only rotate within a small angle range, thereby adapting to the forward rotation of the ratchet 8 and braking the ratchet 8 in the reverse direction. This is well known to those skilled in the art and will not be described in detail here. A torsion spring is also connected between the pawl 9 and the mounting base 10; through the arrangement of the torsion spring, when the ratchet 8 rotates forward, the pawl 9 can swing slightly to give way to the movement of the ratchet teeth on the ratchet 8. After the ratchet teeth slide past the pawl 9, the torsion spring can quickly reset the pawl 9 and insert it between the ratchet teeth, preventing the ratchet 8 from rotating in the reverse direction.

[0036] A wheel disc 11 is fixedly connected to the ratchet 8 , and two pull ropes 12 are wound around the wheel disc 11 . One end of the two pull ropes 12 away from the wheel disc 11 is fixedly connected to the two sliders 5 .

[0037] The bottom of the base plate 1 is also rotatably provided with an adjusting rod 13, a knot is fixed on the adjusting rod 13, a pinion 14 is fixed on the knot, and a protective cover 16 is fixedly connected to the end of the base plate 1. The protective cover 16 is retractable and foldable. Figure 2 and Figure 5 As shown, the end of the protective cover 16 away from the base plate 1 is fixedly connected to the large gear 15, the large gear 15 is rotatably connected to the base plate 1, the large gear 15 is engaged with the small gear 14, and the slide rail 2 is located in the protective cover 16 when the protective cover 16 is opened. Figure 2 The adjusting rod 13 in this embodiment is a double-ended screw. Both ends of the double-ended screw are provided with nut sleeves 17. The nut sleeves 17 are threadedly connected to the screw, and the nut sleeves 17 are slidably connected to the base plate 1. In this way, when the adjusting rod 13 is rotated, the two nut sleeves 17 will not rotate with the adjusting rod 13 but will slide closer to each other along the axial direction of the adjusting rod 13. The working principle of the screw mechanism is well known in the art and will not be described here. A traction rope 18 is connected between the two sliders 5. A sliding column 19 is provided at the bottom of the base plate 1. The sliding column 19 can slide along the length direction of the base plate 1, that is, the sliding column 19 can slide in a direction perpendicular to the adjusting rod 13. A spring 6 is connected between the sliding column 19 and the base plate 1. The middle part of the traction rope 18 is fixed on the sliding column 19. The traction rope 18 is located between the two nut sleeves 17. The two nut sleeves 17 can slide along the axial direction of the screw and clamp the traction rope 18.

[0038] like Figure 3 As shown, the opposite sides of the two nut sleeves 17 are provided with a plurality of arranged protrusions 20, and the protrusions 20 on the two nut sleeves 17 are staggered, and the protrusions 20 on one nut sleeve 17 are opposite to the gap between the adjacent protrusions 20 on the other nut sleeve 17.

[0039] like Figure 4 As shown, arc-shaped baffles 21 are provided on both side edges of the slide rail 2. The end of the baffle 21 away from the slide rail 2 is bent toward the center of the slide rail 2. There is a gap between the two sets of baffles 21 for the slider 5 to pass through. The lower end of the slider 5 is connected to a ball joint. The ball is stuck in the slide rail 2 and cannot escape from the slide rail 2. The pull rope 12 is also located between the slide rail 2 and the baffle 21 and extends along the slide rail 2. Through the design of the baffle 21, the pull rope 12 will not escape from the slide rail 2, so that the pull rope 12 can only be distributed and moved along the extension direction of the slide rail 2.

[0040] like Figure 2As shown, the slide rail 2, the ratchet 8, the pawl 9, the pull rope 12, and the fixing belt 7 are provided in two groups that are symmetrically distributed front to back.

[0041] In the specific implementation of this embodiment, when the patient's hand needs to be fixed, the hand passes under the two sets of fixing belts 7 and is placed on the base plate 1. Then the two sets of fixing belts 7 are adjusted respectively. When adjusting, the fixing belt 7 located on the front side of the hand, i.e. Figure 2 Taking the adjustment of the fixing belt 7 shown above as an example, the wheel 11 is rotated, and the wheel 11 drives the ratchet 8 to rotate. The torsion spring connected between the ratchet 8 and the base plate 1 begins to store energy, and the pawl 9 slides on the ratchet teeth of the ratchet 8. The wheel 11 rotates and reels the pull rope 12, combined with Figure 1 and Figure 4 As shown, the pull rope 12 moves between the slide rail 2 and the baffle 21, and pulls the slider 5 to slide on the slide rail 2. The slider 5 enters the arc track section 4 from the inclined track section 3 and finally moves to the bottom of the base plate 1. The state at this time is as shown in FIG. Figure 6 As shown, the fixing belt 7 is pressed on the hand, and the two ends of the fixing belt 7 are also bent toward the lower side of the base plate 1, thereby simulating the process of bandaging the patient's hand. During the process, the two sliders 5 move toward each other, and the smaller the distance between the two sliders 5, the closer the two ends of the fixing belt 7 are, and the greater the fixing force of the fixing belt 7 on the hand. Combined with the patient's feeling, when the slider 5 moves to the appropriate position, the wheel 11 is released, and the fixing belt 7 is combined with the patient's feeling. Figure 2 It is understood that at this time, since the pawl 9 is stuck between the ratchet teeth of the ratchet 8, the ratchet 8 cannot rotate in the opposite direction and reset under the action of the torsion spring, and the wheel 11 cannot rotate in the opposite direction either, thereby locking the position of the slider 5, that is, fixing the positions of the two ends of the fixing belt 7 to ensure the fixation effect on the patient's hand.

[0042] Combine Figure 2 and Figure 5 It is understood that after the fixing belt 7 is adjusted, the adjusting rod 13 is rotated, so that the adjusting rod 13 drives the protective cover 16 to rotate away from the end of the base plate 1 through the knot, small gear 14 and large gear 15. The protective cover 16 is opened and covers the hand to isolate and protect the patient's hand. It is understood that in actual application, the protective cover 16 can be made of transparent plastic film or silicone. This allows the two ends of the protective cover 16 to be telescopic and foldable, while facilitating observation of the needle insertion site on the hand. After the protective cover 16 is opened, it is supported by the upper end of the slide rail 2 to ensure the protective effect on the hand.

[0043] Combine Figure 2It is understood that when the two sliders 5 move closer together, the tension of the traction rope 18 decreases. At this time, the sliding column 19 slides along the base plate 1 and away from the slider 5 under the action of the spring 6, thereby straightening and tightening the traction rope 18. When the adjustment rod 13 is turned to open the protective cover 16, the two nut sleeves 17 slide on the adjustment rod 13 and move closer to each other, thereby clamping and fixing the traction rope 18 to assist the ratchet 8 and the pawl 9 in locking the position of the slider 5, ensuring the fixing effect of the fixing belt 7 on the hand, and preventing the fixing belt 7 from loosening due to accidental contact with the pawl 9. It is understood that Figure 2 The upper fixing belt 7 is used to fix the patient's fingers, while the lower fixing belt 7 is used to fix the patient's wrist. In actual application, a separate nut sleeve 17 and a traction rope 18 can also be provided to assist in locking the position of the two sliders 5 below, so as to enhance the fixing effect of the lower fixing belt 7 on the wrist. This can be adjusted according to actual application requirements.

[0044] After the infusion is completed, the adjusting rod 13 is rotated in the opposite direction to retract the protective cover 16 and expose the hand. The adjusting rod 13 rotates in the opposite direction to move the two nut sleeves 17 away from each other, thereby releasing the traction rope 18. The pawl 9 is then slid away from the ratchet 8. The ratchet 8 is no longer restricted by the pawl 9 and rotates in the opposite direction under the action of the torsion spring to reset. The slider 5 is also moved along the slide rail 2 by the spring 6 to reset to the top of the slide rail 2. The fixing belt 7 is driven away from the hand by the slider 5, and the hand can then be removed.

[0045] During the process of fixing the hand, if the fixing belt 7 is too tight, you can refer to the operation process after the infusion is completed, slide the pawl 9, make the ratchet 8 rotate in the opposite direction briefly, release the pawl 9, and the pawl 9 automatically re-engages between the ratchet teeth of the ratchet 8 under the action of the spring 6. Through the above operation, the wheel 11 rotates in the opposite direction briefly and releases a section of the pull rope 12. At this time, the slider 5 automatically slides in the opposite direction under the action of the spring 6 and adjusts its own position, thereby achieving a certain degree of relaxation of the fixing belt 7 and achieving the purpose of adjusting the fixing force of the fixing belt 7.

[0046] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A hand fixator for patient treatment, characterized in that: The base comprises a base plate, both sides of which are fixed with slide rails, the slide rails comprising an inclined rail section and an arc rail section, the upper end of the inclined rail section protruding from the upper surface of the base plate, the lower end of the inclined rail section connected to the arc rail section, and the arc rail section is located below the base plate; sliders are slidably provided on the slide rails, the sliders can slide between the inclined rail section and the arc rail section, a spring is connected between the upper end of the slide rail and the slider; a fixing belt is connected between the two sliders, and the fixing belt is located above the base plate; A ratchet is rotatably provided at the bottom of the base plate, and a torsion spring is connected between the ratchet and the base plate; a pawl is provided on the outer side of the ratchet, and the pawl is engaged between the ratchet teeth of the ratchet; a mounting seat is rotatably provided on the pawl, and the mounting seat is slidably connected to the base plate along the radial direction of the ratchet, and the pawl and the mounting seat are rotatably connected, and a torsion spring is connected between the pawl and the mounting seat; A wheel disc is fixedly connected to the ratchet, two pull ropes are wound around the wheel disc, and ends of the two pull ropes away from the wheel disc are fixedly connected to the two sliders respectively.

2. A hand fixator for patient treatment according to claim 1, characterized in that: The bottom of the base plate is rotatably provided with an adjusting rod, a knot is fixed on the adjusting rod, a small gear is fixed on the knot, the end of the base plate is fixedly connected to a protective cover, the protective cover can be telescopically folded, the end of the protective cover away from the base plate is fixedly connected to a large gear, the large gear is rotatably connected to the base plate, the large gear is engaged with the small gear, and when the protective cover is opened, the slide rail is located inside the protective cover.

3. A hand fixator for patient treatment according to claim 2, characterized in that: The adjusting rod is a double-ended screw, and both ends of the double-ended screw are provided with nut sleeves, the nut sleeves are threadedly connected to the screw, and the nut sleeves are slidably connected to the base plate; a traction rope is connected between the two sliders, and a sliding column is provided at the bottom of the base plate, which can slide along the length direction of the base plate, and a spring is connected between the sliding column and the base plate. The middle part of the traction rope is fixed on the sliding column, and the traction rope is located between the two nut sleeves. The two nut sleeves can slide along the axial direction of the screw and clamp the traction rope.

4. A hand fixator for patient treatment according to claim 3, characterized in that: A plurality of arranged and distributed protrusions are provided on opposite sides of the two nut sleeves, and the protrusions on the two nut sleeves are staggered, with the protrusions on one nut sleeve facing the gap between adjacent protrusions on the other nut sleeve.

5. The hand fixator for patient treatment according to claim 4, characterized in that: Arc-shaped baffles are provided on both side edges of the slide rail, and a gap for the slider to pass through is provided between the two sets of baffles. The pull rope is located between the slide rail and the baffles and extends along the slide rail.

6. The hand fixator for patient treatment according to claim 5, characterized in that: The slide rail, ratchet, pawl, pull rope and fixing belt are provided in two groups which are symmetrically distributed front and back.

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