Adjustable pressure inflatable shaping balloon liner splint
By using a torsion spring-driven linkage mechanism and a quick-connect mechanism, the problem of frequent adjustments required for traditional inner lining plates is solved. This enables adaptive adjustment and stable clamping of the curved plate, avoids pressure sores, and improves ease of use and fixation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF HENAN UNIV
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional inner splints require frequent adjustments to the fixation straps and pads to regulate tightness, leading to unstable fracture fixation and potentially causing pressure injuries or osteofascial syndrome. They are also difficult to adapt to the fixation needs of different limb locations.
Employing a torsion spring-driven linkage mechanism and quick-connect mechanism, the curved plate achieves adaptive adjustment and rapid installation and removal. Combined with Velcro and rubber sealing covers, it ensures a tight fit between the airbag and the limb, and provides stable clamping through elastic bands.
It achieves a close fit between the curved plate and the limb, ensuring even pressure distribution, preventing pressure sores, improving ease of use and fixation effectiveness, and reducing the operational requirements for doctors and patients.
Smart Images
Figure CN224461869U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to an adjustable pressure inflatable shaping balloon liner. Background Technology
[0002] The adjustable pressure inflatable shaping balloon liner splint is an innovative medical device that combines inflatable shaping technology with liner splint design. It is mainly used for fracture fixation, postoperative rehabilitation or limb orthotics, and achieves personalized support and protection through precise pressure control.
[0003] Traditional splints use straps to connect a specified number of fixed-size septa. The elasticity of the straps then allows the septa to stably clamp the external air cushion on the limb's outer surface, thus achieving limb fixation. Traditional small splint fixation requires frequent adjustments to the fixation straps and pressure pads during treatment to regulate the splint's tightness and prevent loosening that could lead to fracture displacement, excessive tightness that could cause pressure injury and osteofascial syndrome, and correction of residual fracture displacement. This places high demands on both doctors and patients. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an adjustable pressure inflatable shaping balloon liner plate. The linkage mechanism driven by torsion springs enables the arc-shaped plate to adapt to the limb parts. At the same time, the quick-installation and disassembly connection mechanism can realize the rapid connection of a specified number of liner plates, effectively meeting the different limiting requirements of the external airbag pads at different limb parts, and can effectively solve the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable pressure inflatable shaping balloon liner, comprising an inner liner, an adaptive mechanism, and a connecting mechanism;
[0006] Inner lining plate: Each of its interiors is provided with a cavity, and the cavity is connected to an arc plate through an adaptive mechanism. The adaptive mechanism includes support one, pin, disk, connecting rod and support two. Support one is symmetrically fixedly connected to the center of the vertical side wall of the cavity. A pin is fixedly connected between two adjacent supports one. A disk is rotatably connected to the middle of the outer surface of the pin. A connecting rod is fixedly connected to the upper and lower ends of the disk. Support two is fixedly connected to the upper and lower ends of the outer arc surface of the arc plate. Support two is rotatably connected to the radially adjacent connecting rod through a connecting shaft. The projections of the central axis of the pin and the central axis of the connecting shaft inside the same cavity onto the horizontal plane are perpendicular to each other.
[0007] Connection mechanism: It is evenly arranged between two adjacent inner lining plates. The linkage mechanism driven by torsion springs allows the arc-shaped plate to adapt to the limb parts. At the same time, the connection mechanism that can be quickly installed and disassembled can realize the rapid connection of a specified number of inner lining plates, effectively meeting the different limiting requirements of the external airbag cushions at different limb parts.
[0008] Furthermore, the adaptive mechanism also includes torsion springs, each of which is fixedly connected between one end of the support near the center of the pin and the disc. The torsion springs are movably sleeved on the outer surface of the adjacent pins to provide driving force for the adaptive movement of the arc plate.
[0009] Furthermore, the connecting mechanism includes threaded holes, screws, connecting seats, and elastic bands. The threaded holes are evenly distributed at the left and right ends of the inner lining plate. Each threaded hole is threaded with a screw. The end of the screw away from the center of the inner lining plate is fixedly connected to a connecting seat. An elastic band is provided between two adjacent connecting seats on the same horizontal plane to achieve quick connection of adjacent inner lining plates, while providing elasticity to achieve stable clamping of the limb by the inner lining plate.
[0010] Furthermore, the connecting mechanism also includes a rotating seat, which is rotatably connected to the end of the connecting seat away from the center of the inner lining plate. The end of the rotating seat away from the center of the inner lining plate is fixedly connected to the corresponding end of the horizontally adjacent elastic band to prevent the elastic band body from being twisted due to the rotation of the screw.
[0011] Furthermore, rubber sealing covers are fixedly connected between the inner lining plate and the radially adjacent arc-shaped plates. Support 1, pin, disc, torsion spring, connecting rod and support 2 are all located inside the adjacent rubber sealing covers to prevent dust and bacteria from entering the cavity.
[0012] Furthermore, the inner arc surface of the arc plate is provided with evenly distributed Velcro straps, which are installed in conjunction with the external airbag cushion to facilitate quick connection between the arc plate and the external airbag cushion.
[0013] Furthermore, the inner arc surface of the arc plate is fixedly connected with evenly distributed ribs, and the four inner lining plates are provided with rubber pads opposite to the outer surface to improve the stability of the inner lining plates, the outer airbag pads and the limb contact, and the rubber pads provide cushioning for external touches.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This adjustable pressure inflatable shaping balloon liner has the following advantages:
[0015] 1. The system uses a rotating connection between a disc and a pin, and a linkage mechanism to achieve self-adjustment of the vertical angle of the arc-shaped plate. At the same time, the arc-shaped plate can rotate laterally around the central axis of the connecting shaft, thus adapting to the external airbag clamping needs of different limbs. This ensures that the external airbag can fit tightly against the limb, resulting in uniform pressure on the limb, effectively preventing pressure sores, and promoting better recovery.
[0016] 2. A stable connection between the screw and the threaded hole is achieved by rotating the connecting seat, and then a stable connection between adjacent inner lining plates is achieved by the elastic band. At the same time, the rotation relationship between the connecting seat and the rotating seat prevents the connecting seat from twisting during rotation and causing itself to be twisted. The quick-install and disassemble connection mechanism enables the rapid connection of a specified number of inner lining plates. Under the elastic force of the elastic band, the inner lining plate provides driving force for clamping and limiting the external airbag pads of different limbs. No manual adjustment is required, which greatly improves the ease of use of the inner lining plate. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a cross-sectional view of the internal structure of this utility model;
[0019] Figure 3 This is a cross-sectional view of the front side of the present invention;
[0020] Figure 4 This is an enlarged structural diagram of point A in this utility model.
[0021] In the diagram: 1 Inner liner, 2 Cavity, 3 Adaptive mechanism, 31 Support 1, 32 Pin, 33 Disc, 34 Torsion spring, 35 Connecting rod, 36 Support 2, 4 Connecting mechanism, 41 Threaded hole, 42 Screw, 43 Connecting seat, 44 Rotating seat, 45 Elastic band, 5 Arc plate, 6 Rib, 7 Velcro, 8 Rubber pad, 9 Rubber sealing cover. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 This embodiment provides a technical solution: an adjustable pressure inflatable shaping balloon liner, including an inner liner 1, an adaptive mechanism 3, and a connecting mechanism 4;
[0024] Inner lining plate 1: Each of its interiors has a cavity 2. The cavity 2 is connected to an arc-shaped plate 5 via an adaptive mechanism 3. The adaptive mechanism 3 includes a first support 31, a pin 32, a disc 33, a connecting rod 35, and a second support 36. Each first support 31 is symmetrically fixed to the center of the vertical sidewall of the cavity 2. A pin 32 is fixedly connected between adjacent first supports 31. A disc 33 is rotatably connected to the center of the outer surface of each pin 32. Connecting rods 35 are fixedly connected to the upper and lower ends of each disc 33. Second supports 36 are fixedly connected to the upper and lower ends of the outer arc surface of the arc-shaped plate 5. Each second support 36 is rotatably connected to a radially adjacent connecting rod 35 via a connecting shaft. The projections of the central axis of the pin 32 and the central axis of the connecting shaft within the same cavity 2 onto the horizontal plane are perpendicular to each other. The adaptive mechanism 3 also includes a torsion spring 34. Each torsion spring 34 is fixedly connected between the end of the first support 31 near the center of the pin 32 and the disc 33. All 34 are movably sleeved on the outer surface of the adjacent pins 32. Rubber sealing covers 9 are fixedly connected between the inner liner plate 1 and the radially adjacent arc plate 5. Support 1 31, pins 32, disc 33, torsion spring 34, connecting rod 35 and support 2 36 are all located inside the adjacent rubber sealing covers 9. The outer surface of the limb is supported by the external airbag and transmitted to the arc plate 5. The arc plate 5 first rotates laterally around the central axis of the connecting shaft inside the support 2 36 according to the direction of the thrust. At the same time, the arc plate 5 transmits the thrust to the disc 33 through the connecting rod 35. The disc 33 rotates around the central axis of the corresponding pin 32. The disc 33 rotates vertically. At the same time, the torsion spring 34 holds the force. The elastic force of the torsion spring 34 acts on the disc 33, which facilitates the reset of the arc plate 5. The lateral and vertical rotation of the arc plate 5 makes the external airbag fit tightly with the limb and the limb is evenly compressed, which effectively avoids the occurrence of pressure sores and is more conducive to the recovery of the condition.
[0025] Connecting mechanism 4: It is evenly arranged between two adjacent inner liner plates 1. The connecting mechanism 4 includes threaded holes 41, screws 42, connecting seats 43, and elastic bands 45. The threaded holes 41 are evenly arranged at the left and right ends of the inner liner plates 1. The screws 42 are threaded into the inside of each threaded hole 41. The end of each screw 42 away from the center of the inner liner plate 1 is fixedly connected to the connecting seat 43. An elastic band 45 is arranged between two adjacent connecting seats 43 on the same horizontal plane. The connecting mechanism 4 also includes a rotating seat 44. The rotating seat 44 is rotatably connected to the end of each connecting seat 43 away from the center of the inner liner plate 1. The end of each rotating seat 44 away from the center of the inner liner plate 1 is fixedly connected to the corresponding end of the horizontally adjacent elastic band 45. The rotation of the screws 42 is achieved by rotating the connecting seats 43. 42 rotates and connects to the corresponding threaded hole 41. During the rotation of the connecting seat 43, since the connecting seat 43 is rotatably connected to the corresponding rotating seat 44, the connecting seat 43 and the adjacent rotating seat 44 rotate relative to each other, preventing the rotating seat 44 from rotating with it, and thus preventing damage to the elastic band 45. When the screw 42 is threaded into the corresponding threaded hole 41, the elastic band 45 connects to the adjacent inner liner 1. Then, the person inserts the limb between the outer airbags. The thrust of the limb on the outer airbag is transmitted to the corresponding inner liner 1. The inner liner 1 moves outward from the center, which causes the elastic band 45 to stretch elastically. The elastic force of the elastic band 45 reacts to the inner liner 1 and is transmitted to the corresponding outer airbag, thus achieving a stable connection between the outer airbag and the limb.
[0026] Among them: the inner arc surface of the arc plate 5 is provided with evenly distributed Velcro 7, which is installed in conjunction with the external airbag pad to attach the external airbag pad to the Velcro 7 on the inner arc surface of the arc plate 5, so as to achieve a stable connection between the external airbag pad and the arc plate 5. The inner arc surface of the arc plate 5 is fixedly connected with evenly distributed ribs 6 to increase the friction between the arc plate 5 and the external airbag pad and prevent displacement during use. The four inner lining plates 1 are provided with rubber pads 8 opposite to the outer surface. When the inner lining plate 1 is subjected to external impact, the rubber pads 8 disperse the impact force generated by the impact according to their own characteristics, so as to avoid the force transmission under hard contact being more direct and thus affecting the wound healing.
[0027] The working principle of the adjustable pressure inflatable shaping balloon liner provided by this utility model is as follows: During operation, the operator first selects a specified number of liner plates 1 according to the location and specifications of the limb. Then, the operator attaches the outer airbag pad to the Velcro 7 on the inner arc surface of the arc plate 5 to achieve a stable connection between the outer airbag pad and the arc plate 5. The operator then rotates the connecting seat 43 to rotate the screw 42. The screw 42 rotates and engages with the corresponding threaded hole 41. During the rotation of the connecting seat 43, since the connecting seat 43 is rotatably connected to the corresponding rotating seat 44, the connecting seat 43 rotates relative to the adjacent rotating seat 44, preventing the rotating seat 44 from rotating along with it, thus preventing damage to the elastic band 45. When the screw 42 is threaded into the corresponding threaded hole 41, the elastic band 45 connects the adjacent liner plates 1. The operator then inserts the limb between the outer airbag pads, and the limb pushes against the outer airbag pad... The force is transmitted to the corresponding inner lining plate 1, which moves outward from the center, causing the elastic band 45 to stretch elastically. The elastic force of the elastic band 45 reacts to the inner lining plate 1, and is then transmitted to the corresponding outer airbag, thus achieving a stable connection between the outer airbag and the limb. At the same time, the outer surface of the limb is supported by the outer airbag and transmitted to the arc plate 5. The arc plate 5 first rotates laterally around the central axis of the connecting shaft inside the support 36 according to the direction of the thrust. At the same time, the arc plate 5 transmits the thrust to the disc 33 through the connecting rod 35. The disc 33 rotates around the central axis of the corresponding pin 32. The disc 33 rotates vertically, and the torsion spring 34 holds the force. The elastic force of the torsion spring 34 acts on the disc 33, facilitating the reset of the arc plate 5. The lateral and vertical rotation of the arc plate 5 ensures that the outer airbag fits tightly to the limb and that the limb is evenly compressed, effectively preventing pressure sores and promoting recovery.
[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An adjustable pressure inflatable shaping balloon liner splint, characterized by: It include inner lining plate (1), self-adapting mechanism (3) and connecting mechanism (4); The inner lining plate (1) is internally provided with a cavity (2), the cavity (2) is connected with an arc plate (5) through the self-adapting mechanism (3), the self-adapting mechanism (3) includes a support one (31), a pin shaft (32), a disc (33), a connecting rod (35) and a support two (36), the support one (31) is symmetrically fixedly connected to the center position of the vertical side wall of the cavity (2), the adjacent two support ones (31) are fixedly connected with the pin shaft (32), the outer surface of the pin shaft (32) is rotatably connected with the disc (33), the upper and lower ends of the disc (33) are fixedly connected with the connecting rod (35), the upper and lower ends of the outer arc surface of the arc plate (5) are fixedly connected with the support two (36), the support two (36) is rotatably connected with the radially adjacent connecting rod (35) through a connecting shaft, the central axis of the pin shaft (32) and the central axis of the connecting shaft in the same cavity (2) are perpendicular to each other in the projection on the horizontal plane. The connecting mechanism (4) is uniformly arranged between the adjacent two inner lining plates (1).
2. The adjustable pressure inflatable shaping balloon liner splint of claim 1, wherein: The self-adapting mechanism (3) further includes a torsional spring (34), the torsional spring (34) is fixedly connected between one end of the support one (31) close to the center of the pin shaft (32) and the disc (33), and the torsional spring (34) is movably sleeved on the outer surface of the adjacent pin shaft (32).
3. The adjustable pressure inflatable shaping balloon liner splint of claim 1, wherein: The connecting mechanism (4) includes a threaded hole (41), a screw rod (42), a connecting seat (43) and an elastic band (45), the threaded holes (41) are uniformly arranged at the left and right ends of the inner lining plate (1) respectively, the screw rods (42) are threadedly connected in the threaded holes (41), one end of the screw rod (42) away from the center of the inner lining plate (1) is fixedly connected with the connecting seat (43), and the elastic band (45) is arranged between the adjacent two connecting seats (43) on the same horizontal plane.
4. The adjustable pressure inflatable shaping balloon liner splint of claim 3, wherein: The connecting mechanism (4) further includes a rotating seat (44), the rotating seat (44) is rotatably connected to one end of the connecting seat (43) away from the center of the inner lining plate (1), and the end of the rotating seat (44) away from the center of the inner lining plate (1) is fixedly connected with the corresponding end of the transversely adjacent elastic band (45).
5. The adjustable pressure inflatable shaping balloon liner splint of claim 2, wherein: The inner lining plate (1) and the radially adjacent arc plate (5) are fixedly connected with a rubber sealing cover (9), the support one (31), the pin shaft (32), the disc (33), the torsional spring (34), the connecting rod (35) and the support two (36) are located in the adjacent rubber sealing cover (9).
6. The adjustable pressure inflatable shaping balloon liner splint of claim 1, wherein: The inner arc surface of the arc plate (5) is provided with evenly distributed magic tapes (7), and the magic tapes (7) are cooperatively installed with external air bag pads.
7. The adjustable pressure inflatable shaping balloon liner splint of claim 1, wherein: The inner arc surface of the arc plate (5) is fixedly connected with evenly distributed ribs (6), and the outer surfaces of the four inner lining plates (1) are provided with rubber pads (8).