Children congenital hand and foot deformity correction equipment

Abstract

The invention discloses children congenital hand and foot deformity correction equipment, and relates to the technical field of biomedical engineering. The correcting device comprises a position-adjustable spring steel plate base assembly and a correcting part. The correcting part is composed of an adjusting extending frame, a first lead screw, a second lead screw and a plurality of corresponding clamping frames, and a correcting cotton cushion block capable of being pushed in a rotating mode is arranged in each clamping frame and used for gradually clamping non-finger joint parts to conduct mild correction. The lead screw and the clamping frame are in rotary fit, and axial or rotary displacement of the lead screw and the clamping frame is limited through the locking shaft sleeve and the screw rod. A locking base plate is arranged on the side of the spring steel plate and provided with four binding belts capable of being automatically tightened and a gear sleeve, a poking wheel, a gear and a rack linkage mechanism matched with the binding belts, and the poking wheel is rotated to drive the binding belts to be synchronously tightened and achieve self-locking. The sponge pad is used for buffering and attaching to palms or soles.

Description

Technical Field

[0001] This invention relates to the field of biomedical engineering technology, specifically to a device for correcting congenital hand and foot deformities in children. Background Technology

[0002] Currently, non-surgical correction of congenital finger or toe deformities in children often involves soft splints, plaster casts, elastic bandages, or simple shaping braces. These structures typically use fixed-size or single-angle support, making it impossible to precisely control the correction based on the specific type of deformity in different parts of the child's body. For example, traditional splints are often one-piece structures, unable to provide multi-point adjustment for each finger joint, resulting in inaccurate correction angles. While some bandages or adhesive patches can achieve a certain degree of compression and fixation, they lack the ability to gradually adjust the clamping force, easily leading to excessive force at once, causing pain, skin indentations, or even hindering blood circulation. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: a device for correcting congenital hand and foot deformities in children, comprising a base assembly, the base assembly including a spring steel plate, a correction part fixedly mounted on the spring steel plate, the correction part including an adjustable extension frame fixedly engaged with the spring steel plate, wherein the position of the adjustable extension frame fixed on the spring steel plate can be changed, and the corresponding position is selected and fixed to the spring steel plate according to the specific location of the finger to be corrected, for example, by using screws or glue; a first lead screw and a second lead screw are rotatably mounted on the adjustable extension frame and arranged in parallel, the first lead screw and the second lead screw being close together. A first clamping frame is rotatably mounted on one end of the adjustment extension frame. A second clamping frame and a third clamping frame are sequentially mounted on the side of the first and second lead screws away from the adjustment extension frame. The second clamping frame is threadedly engaged with the first lead screw, and the third clamping frame is threadedly engaged with the second lead screw. The second clamping frame is slidably sleeved on the second lead screw, and the third clamping frame is slidably sleeved on the first lead screw. Correcting cotton pads are slidably mounted on the inner sides of the first, second, and third clamping frames. A clamping lead screw is rotatably mounted on each correcting cotton pad, and the clamping lead screw is threadedly engaged with the corresponding first, second, and third clamping frames.

[0004] Preferably, the first lead screw and the second lead screw are only rotated with the first clamping frame and cannot be axially displaced; the first lead screw and the second lead screw are only rotated with the adjusting extension frame and cannot be axially displaced; the clamping lead screw and the straightening cotton pad can only rotate and cannot be axially displaced.

[0005] Preferably, the ends of the first lead screw and the second lead screw away from the adjustment extension frame are both fixedly equipped with locking bushings. The two locking bushings are rotatably inserted into the U-shaped reinforcing frame. A screw rod is threaded into the U-shaped reinforcing frame along the radial direction of the locking bushing. The screw rod contacts and engages with the locking bushing. By rotating the screw rod, the locking bushing is fixed in the U-shaped reinforcing frame.

[0006] Preferably, the base assembly further includes four straps fixed to the spring steel plate, and a locking base plate is provided on the side of the spring steel plate. The locking base plate is provided with a locking part for tightening the four straps, and a sponge pad is fixedly provided on the side of the locking base plate facing the spring steel plate.

[0007] Preferably, the locking part includes two strap fixing block slide rails arranged parallel to each other on the locking base plate. Two strap fixing blocks are symmetrically slidably installed on each strap fixing block slide rail. The two corresponding strap fixing blocks on the two strap fixing block slide rails are fixedly connected by strap fixing block connecting beams. A rack is fixedly installed on each of the two strap fixing block connecting beams. The strap can be inserted into the strap fixing block, and the strap fixing block is provided with screws for fixing the strap.

[0008] Preferably, a fixing collar is fixedly installed in the middle of the locking base plate, and a rotating cylindrical block is coaxially rotatably arranged on the inner side of the fixing collar. Two symmetrically arranged control grooves are opened on the rotating cylindrical block. The control groove is composed of a support surface and a pressing slope. An upper locking post is overlapped between the pressing slope and the inner wall of the fixing collar. An elastic rubber block is elastically connected between the upper locking post and the support surface. The elastic rubber block is used to push the upper locking post to move away from the support surface. The side of the upper locking post away from the support surface contacts and engages with an unlocking lever. A gap is left between the unlocking lever and the pressing slope.

[0009] Preferably, the unlocking levers in both control slots are fixed on the rotating disk surface, which is coaxially arranged with the fixed collar. A toothed sleeve is rotatably fitted on the circumferential surface of the fixed collar, and the toothed sleeve is fixedly engaged with the rotating disk surface. The toothed sleeve meshes with the actuating gear, which is rotatably mounted on the rack support frame. The rack support frame is fixedly mounted on the locking base plate, and a central gear is also rotatably mounted on the rack support frame. The central gear and the rotating cylindrical block are coaxially fixed through a central spindle, which is rotatably engaged with the rotating disk surface and the rack support frame.

[0010] Preferably, the two racks are symmetrically arranged about the center origin of the central gear, and both racks mesh with the central gear for transmission; an outer shell frame is provided on the outside of the rack support frame, the outer shell frame is fixed on the locking base plate, a dial wheel is rotatably mounted on the locking base plate, the dial wheel and the dialing gear are coaxially fixedly engaged through a dialing shaft, wherein the dialing shaft is rotatably engaged with the rack support frame, and the dialing shaft is rotatably engaged with the outer shell frame.

[0011] Compared with the prior art, the present invention has the following advantages: (1) The present invention adjusts the extension frame to fix the spring steel plate in multiple positions, so that the corrective component can be installed in a targeted manner according to the different deformed parts of the child, and the position adjustment can be completed without replacing the overall structure. At the same time, the first lead screw, the second lead screw and multiple clamping frames can be axially coordinated and adjusted, so as to achieve precise positioning of different lengths and different finger distances, making the device widely applicable in treating different types of congenital hand and foot deformities in children, and reducing the cost of customized processing and adaptation; (2) The corrective cotton pad of the present invention slides slowly by rotating the clamping lead screw, which can gradually increase the clamping force in stages over a long period of time, rather than being forcibly fixed at one time, thereby effectively avoiding sudden damage to the joints, soft tissues and blood circulation of the child. The corrective cotton pad only acts on non-finger joint positions to avoid direct pressure on the movable joints. Combined with the elastic structure and detachable adjustment design, it achieves gentle correction and improves the safety and tolerance of the use process; (3) The first clamping frame, the second clamping frame and the third clamping frame of the present invention are independent of each other and are adjusted in position by different screw drives. They can apply control force according to the angle and direction of the deformity of the affected finger. The cooperation between the locking bushing and the screw rod can realize the overall fixation of the corrective frame, prevent each clamping segment from loosening or shifting over time, so that each segment of finger bone can obtain the corresponding corrective traction force, and improve the effect and accuracy of directional correction. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at point A in the middle.

[0014] Figure 3 For the present invention Figure 1 Schematic diagram of the structure at point B.

[0015] Figure 4 This is a schematic diagram of the locking part structure of the present invention.

[0016] Figure 5 This is a schematic diagram of the internal structure of the locking part of the present invention.

[0017] Figure 6 This is a schematic diagram of the tooth sleeve structure of the present invention.

[0018] Figure 7 This is a schematic diagram of the rotating cylindrical block structure of the present invention.

[0019] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point C.

[0020] Figure 9This is a schematic diagram of the fixing collar structure of the present invention.

[0021] Figure 10 For the present invention Figure 9 Schematic diagram of the structure at point D.

[0022] In the diagram: 101-Spring steel plate; 102-Adjusting extension frame; 103-First lead screw; 104-Locking bushing; 105-U-shaped reinforcing frame; 106-First clamping frame; 107-Clamping lead screw; 108-Correcting cotton pad; 109-Screw rod; 110-Second lead screw; 111-Sponge pad; 112-Strap; 113-Strap fixing block slide rail; 114-Strap fixing block; 115-Outer shell frame; 116-Tuning wheel; 117-Rack; 118-Gear 119-Support frame; 120-Locking base plate; 121-Gear sleeve; 122-Actuating gear; 123-Actuating shaft; 124-Central spindle; 125-Fixing collar; 126-Rotating disc; 127-Rotating cylindrical block; 128-Unlock lever; 129-Upper locking pressure column; 130-Elastic rubber block; 131-Supporting surface; 132-Extrusion slope; 133-Second clamping frame; 134-Third clamping frame; 135-Binding strap fixing block connecting beam. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-10 The technical solution of the present invention will be further illustrated through specific embodiments.

[0024] This invention provides a device for correcting congenital hand and foot deformities in children, including a base assembly. The base assembly includes a spring steel plate 101, on which a correction part is fixedly mounted. The correction part includes an adjustable extension frame 102 that is fixedly engaged with the spring steel plate 101. The position of the adjustable extension frame 102 on the spring steel plate 101 can be changed. Depending on the location of the finger to be corrected, the corresponding position is selected to fix the adjustable extension frame 102 to the spring steel plate 101, for example, by using screws or glue. A first lead screw 103 and a second lead screw 110 are rotatably mounted on the adjustable extension frame 102, arranged in parallel. A first clamping frame 106 is rotatably mounted between the first lead screw 103 and the second lead screw 110 near the end of the adjustable extension frame 102. On the side of the lead screw 103 and the second lead screw 110 away from the adjusting extension frame 102, a second clamping frame 133 and a third clamping frame 134 are sequentially provided. The second clamping frame 133 is threadedly engaged with the first lead screw 103, and the third clamping frame 134 is threadedly engaged with the second lead screw 110. The second clamping frame 133 is slidably sleeved on the second lead screw 110, and the third clamping frame 134 is slidably sleeved on the first lead screw 103. Correcting cotton pads 108 are slidably provided on the inner sides of the first clamping frame 106, the second clamping frame 133, and the third clamping frame 134. A clamping lead screw 107 is rotatably installed on each correcting cotton pad 108. The clamping lead screw 107 is threadedly engaged with the corresponding first clamping frame 106, the second clamping frame 133, and the third clamping frame 134.

[0025] The first lead screw 103 and the second lead screw 110 are only rotated with the first clamping frame 106 and cannot be axially displaced; the first lead screw 103 and the second lead screw 110 are only rotated with the adjusting extension frame 102 and cannot be axially displaced; the clamping lead screw 107 and the correcting cotton pad 108 can only rotate and cannot be axially displaced. Locking bushings 104 are fixedly fitted at the ends of the first lead screw 103 and the second lead screw 110 away from the adjusting extension frame 102. Both locking bushings 104 are rotatably inserted into the U-shaped reinforcing frame 105. Screw rods 109 are threaded into the U-shaped reinforcing frame 105 along the radial direction of the locking bushings 104. The screw rods 109 are in contact with the locking bushings 104, and the locking bushings 104 are fixed in the U-shaped reinforcing frame 105 by rotating the screw rods 109. The base assembly also includes four straps 112 fixed to the spring steel plate 101. A locking base plate 120 is also provided on the side of the spring steel plate 101. The locking base plate 120 is provided with a locking part for tightening the four straps 112. A sponge pad 111 is fixedly provided on the side of the locking base plate 120 facing the spring steel plate 101.

[0026] The locking part includes two strap fixing block slide rails 113 arranged parallel to each other on the locking base plate 120. Two strap fixing blocks 114 are symmetrically slidably installed on each strap fixing block slide rail 113. The two strap fixing blocks 114 on the two strap fixing block slide rails 113 are fixedly connected by strap fixing block connecting beams 135. A rack 117 is fixedly installed on each of the two strap fixing block connecting beams 135. The strap 112 can be inserted into the strap fixing block 114, and the strap fixing block 114 is provided with screws for fixing the strap 112. A fixing collar 125 is fixedly installed in the middle of the locking base plate 120. A rotating cylindrical block 127 is coaxially rotatably arranged on the inner side of the fixing collar 125. Two symmetrically arranged control slots are opened on the rotating cylindrical block 127. The control slots are composed of a support surface 131 and a pressing slope 132. An upper locking post 129 is overlapped between the pressing slope 132 and the inner wall of the fixing collar 125. An elastic rubber block 130 is elastically connected between the upper locking post 129 and the support surface 131. The elastic rubber block 130 is used to push the upper locking post 129 to move away from the support surface 131. The side of the upper locking post 129 away from the support surface 131 contacts and engages with an unlocking lever 128. A gap is left between the unlocking lever 128 and the pressing slope 132. Both unlocking levers 128 in the two control slots are fixed on the rotating disk surface 126. The rotating disk surface 126 is coaxially arranged with the fixed collar 125. A toothed sleeve 121 is rotatably fitted on the circumferential surface of the fixed collar 125. The toothed sleeve 121 is fixedly engaged with the rotating disk surface 126 and meshes with the actuating gear 122. The actuating gear 122 is rotatably mounted on the rack support frame 118. The rack support frame 118 is fixedly mounted on the locking base plate 120. A central gear 119 is also rotatably mounted on the rack support frame 118. The central gear 119 and the rotating cylindrical block 127 are coaxially fixed through the central spindle 124. The central spindle 124 is rotatably engaged with the rotating disk surface 126 and the rack support frame 118. Two racks 117 are symmetrically arranged about the center origin of the central gear 119, and both racks 117 mesh with the central gear 119 for transmission. A housing frame 115 is provided on the outer side of the rack support frame 118. The housing frame 115 is fixed on the locking base plate 120. A dial wheel 116 is rotatably mounted on the locking base plate 120. The dial wheel 116 and the actuating gear 122 are coaxially fixedly engaged through a actuating shaft 123. The actuating shaft 123 is rotatably engaged with the rack support frame 118 and the housing frame 115.

[0027] The working principle of the pediatric congenital hand and foot deformity correction device disclosed in this invention is as follows: The correction part is fixed at different positions on the spring steel plate 101 according to the required correction area (fingers, toes, where the toes require appropriate reduction of the first clamping frame 106, the second clamping frame 133, and the third clamping frame 134, i.e., the third clamping frame 134 is removed, and only the first clamping frame 106 and the second clamping frame 133 are used; at the same time, the corresponding first lead screw 103 and second lead screw 110 also need to be replaced with shorter ones). The shape of the spring steel plate 101 and the locking base plate 120 is adapted to the palm or foot. Insert your finger into the first clamping frame 106, the second clamping frame 133, and the third clamping frame 134 (first insert your palm or foot between the spring steel plate 101 and the locking base plate 120). Then, use a wrench to rotate the clamping screw 107. The rotation of the clamping screw 107 will cause the corrective pad 108 to slide within the corresponding first clamping frame 106, second clamping frame 133, and third clamping frame 134, making the corrective pad 108 contact the finger and fix the finger in place. The corrective pad 108 should not contact the finger's joints. 108 is used to clamp non-knuckle positions (not a one-time clamping and correction, but a gradual clamping and correction over time). Depending on the individual's finger joint position, rotating the first lead screw 103 with a wrench causes the second clamping frame 133 to move axially, thus adjusting the distance between the second clamping frame 133 and the first clamping frame 106. Rotating the second lead screw 110 with a wrench causes the third clamping frame 134 to move axially, thus adjusting the distance between the second clamping frame 133 and the third clamping frame 134. After all adjustments are complete, rotating the two screw rods 109 compresses the locking sleeve 104, preventing the first lead screw 103 and the second lead screw 110 from rotating. At this point, the relative positions of the first clamping frame 106, the second clamping frame 133, and the third clamping frame 134 can be controlled.

[0028] Then, manually rotate the dial 116. The dial 116 drives the actuating gear 122 to rotate via the actuating shaft 123. The actuating gear 122 drives the gear sleeve 121 to rotate, which in turn drives the rotating disk 126 to rotate. The rotating disk 126 then drives the two unlocking levers 128 to rotate. Since the unlocking levers 128 are in the control slot, they will drive the rotating cylindrical block 127 to rotate. (At this time, the rotating cylindrical block 127 rotates in the direction that drives the upper locking pin 129 to move towards the unlocking lever 128. Therefore, the upper locking pin 129 will be subjected to frictional force from the fixed collar 125 towards the support surface 131. This will cause the upper locking pin 129 to squeeze the elastic block 130, increasing the space between the upper locking pin 129 and the inclined surface 132 and the fixed collar 125. This will cause the upper locking pin 129 and...) The friction between the fixed collars 125 disappears, meaning the locking pins 129 are no longer effective. Meanwhile, the other symmetrical locking pin 129 moves toward the support surface 131 when the unlocking lever 128 is activated. The rotating cylindrical block 127 drives the central spindle 124 to rotate, which in turn drives the central gear 119 to rotate. The central gear 119 drives the two racks 117 to move relative to each other. The racks 117, through the strap fixing block connecting beam 135, drive the two strap fixing blocks 114 on each strap fixing block slide rail 113 to move relative to each other (they need to be close together at this time). Then, the strap fixing blocks 114 will drive the straps 112 to tighten. The four straps 112 bind the palm or foot tightly between the locking base plate 120 and the spring steel plate 101, with the sponge pad 111 providing cushioning and comfort. Subsequently, when the dial 116 is released, meaning it is no longer rotated, the reaction force of the strap 112 (because it is tightly bound) is transmitted in the opposite direction to the rotating cylindrical block 127 (the transmission path between the strap 112 and the rotating cylindrical block 127). At this time, the rotating cylindrical block 127 cannot rotate. Therefore, if the rotating cylindrical block 127 wants to rotate, it must drive the upper locking pin 129 in the control slot to rotate. At this time, the rotation direction of the rotating cylindrical block 127 drives the upper locking pin 129 to move away from the unlocking lever 128. Therefore, the upper locking pin 129 will be fixed. The friction of the collar 125 away from the support surface 131 further compresses the inclined surface 132 and the fixed collar 125 against the upper locking post 129. The more it is compressed, the greater the friction. At this time, the upper locking post 129 forms a fixed relationship between the fixed collar 125 and the rotating cylindrical block 127. That is to say, the strap 112 cannot drive the strap fixing block 114 to move, thereby achieving the binding effect. When it is loosened, it is only necessary to rotate the dial 116 again (the dial 116 and the dial shaft 123 are installed in a way that is easy to disassemble to prevent accidental contact of the dial 116 and loosening of the strap 112).

Claims

1. A device for correcting congenital hand and foot deformities in children, characterized in that: The base assembly includes a spring steel plate (101), on which a straightening part is fixedly mounted. The straightening part includes an adjusting extension frame (102) fixedly engaged with the spring steel plate (101). A first lead screw (103) and a second lead screw (110) are rotatably mounted on the adjusting extension frame (102) and arranged in parallel. A first clamping frame (106) is rotatably mounted at one end of the first lead screw (103) and the second lead screw (110) near the adjusting extension frame (102). On the side of the lead screw (103) and the second lead screw (110) away from the adjustment extension frame (102), a second clamping frame (133) and a third clamping frame (134) are sequentially provided. The second clamping frame (133) is threadedly engaged with the first lead screw (103), and the third clamping frame (134) is threadedly engaged with the second lead screw (110). The second clamping frame (133) is slidably sleeved on the second lead screw (110), and the third clamping frame (134) is slidably sleeved on the first lead screw (103). The inner sides of the first clamping frame (106), the second clamping frame (133), and the third clamping frame (134) are all slidably equipped with correction cotton pads (108), and each correction cotton pad (108) is rotatably mounted with a clamping screw (107). The clamping screw (107) is threadedly engaged with the corresponding first clamping frame (106), second clamping frame (133), and third clamping frame (134).

2. The device for correcting congenital hand and foot deformities in children according to claim 1, characterized in that: The first lead screw (103) and the second lead screw (110) are only rotated with the first clamping frame (106) and cannot be axially displaced; the first lead screw (103) and the second lead screw (110) are only rotated with the adjusting extension frame (102) and cannot be axially displaced; the clamping lead screw (107) and the correcting cotton pad (108) can only rotate and cannot be axially displaced.

3. The device for correcting congenital hand and foot deformities in children according to claim 2, characterized in that: The first lead screw (103) and the second lead screw (110) are both fixedly equipped with locking bushings (104) at the ends away from the adjustment extension frame (102). Both locking bushings (104) are rotatably inserted into the U-shaped reinforcing frame (105). A screw rod (109) is threaded into the U-shaped reinforcing frame (105) along the radial direction of the locking bushing (104). The screw rod (109) contacts and engages with the locking bushing (104). By rotating the screw rod (109), the locking bushing (104) is fixed in the U-shaped reinforcing frame (105).

4. The device for correcting congenital hand and foot deformities in children according to claim 3, characterized in that: The base assembly also includes four straps (112) fixed on the spring steel plate (101). A locking base plate (120) is also provided on the side of the spring steel plate (101). The locking base plate (120) is provided with a locking part for tightening the four straps (112). A sponge pad (111) is fixedly provided on the side of the locking base plate (120) facing the spring steel plate (101).

5. The device for correcting congenital hand and foot deformities in children according to claim 4, characterized in that: The locking part includes two strap fixing block slide rails (113) arranged parallel to the locking base plate (120). Two strap fixing blocks (114) are symmetrically slidably installed on each strap fixing block slide rail (113). The two strap fixing blocks (114) on the two strap fixing block slide rails (113) are fixedly connected by strap fixing block connecting beams (135). A rack (117) is fixedly installed on each of the two strap fixing block connecting beams (135). The strap (112) can be inserted into the strap fixing block (114), and the strap fixing block (114) is provided with screws for fixing the strap (112).

6. The device for correcting congenital hand and foot deformities in children according to claim 5, characterized in that: A fixing collar (125) is fixedly installed in the middle of the locking base plate (120). A rotating cylindrical block (127) is coaxially rotatably arranged on the inner side of the fixing collar (125). Two symmetrically arranged control slots are opened on the rotating cylindrical block (127). The control slots are composed of a support surface (131) and a pressing slope (132). An upper locking post (129) is overlapped between the pressing slope (132) and the inner wall of the fixing collar (125). An elastic rubber block (130) is elastically connected between the upper locking post (129) and the support surface (131). The elastic rubber block (130) is used to push the upper locking post (129) to move away from the support surface (131). The side of the upper locking post (129) away from the support surface (131) is in contact with an unlocking lever (128). There is a gap between the unlocking lever (128) and the pressing slope (132).

7. The device for correcting congenital hand and foot deformities in children according to claim 6, characterized in that: The unlocking levers (128) in the two control slots are fixed on the rotating disk surface (126). The rotating disk surface (126) and the fixed collar (125) are coaxially arranged. A toothed sleeve (121) is rotatably fitted on the circumferential surface of the fixed collar (125). The toothed sleeve (121) is fixedly engaged with the rotating disk surface (126). The toothed sleeve (121) meshes with the actuating gear (122). The actuating gear (122) is rotatably mounted on the rack support frame (118). The rack support frame (118) is fixedly mounted on the locking base plate (120). A central gear (119) is also rotatably mounted on the rack support frame (118). The central gear (119) and the rotating cylindrical block (127) are coaxially fixed through the central spindle (124). The central spindle (124) is rotatably engaged with the rotating disk surface (126) and the central spindle (124) is rotatably engaged with the rack support frame (118).

8. The device for correcting congenital hand and foot deformities in children according to claim 7, characterized in that: Two racks (117) are symmetrically arranged about the center origin of the central gear (119), and both racks (117) mesh with the central gear (119) for transmission; a housing frame (115) is provided on the outside of the rack support frame (118), the housing frame (115) is fixed on the locking base plate (120), and a dial wheel (116) is rotatably mounted on the locking base plate (120). The dial wheel (116) and the actuating gear (122) are coaxially fixedly engaged through the actuating shaft (123), wherein the actuating shaft (123) is rotatably engaged with the rack support frame (118), and the actuating shaft (123) is rotatably engaged with the housing frame (115).

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