Anti-dislocation cushion structure used after hip replacement

Abstract

The invention relates to the field of postoperative rehabilitation instruments, and particularly discloses a hip replacement postoperative dislocation prevention cushion structure which comprises a cushion mechanism and a limiting frame mechanism. The seat cushion mechanism comprises a seat cushion assembly, a fixing shaft bracket assembly is arranged at the bottom of the seat cushion assembly, and a pawl assembly is installed on the outer side of the fixing shaft bracket assembly; the limiting frame mechanism comprises a limiting frame assembly rotationally installed on the fixing shaft frame assembly. By arranging the rotatable limiting frame body and the locking structure matched with the ratchet wheel and the pawl, reliable guarantee can be obtained when a hip replacement postoperative patient uses the cushion, after the patient sits, the handle is pulled in the direction of the cushion body, the shaft rod drives the ratchet wheel to rotate, and the limiting frame body is lifted accordingly; after reaching a proper position, the pawl body abuts against the ratchet wheel under the action of the first spring, and reverse rotation of the ratchet wheel is effectively limited; and through the linkage design of the pull rope assembly and the pawl assembly, the laying-down operation of the limiting frame body is extremely simple and convenient.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of postoperative rehabilitation devices, in particular to a hip replacement postoperative dislocation prevention cushion structure. BACKGROUND

[0002] Hip replacement is a common surgical method for treating severe hip joint diseases such as femoral head necrosis, hip osteoarthritis, and rheumatoid arthritis involving the hip joint. The surgery replaces the damaged hip joint components with artificial joint prostheses to restore the normal function of the hip joint, reduce pain, and improve the patient's quality of life. However, the stability of the hip joint after surgery is challenging, as the surgery changes the original anatomical structure and biomechanical environment of the hip joint. The risk of hip dislocation significantly increases when the patient moves in the early postoperative period. According to statistics, the incidence of hip dislocation after hip replacement varies in different studies, but it is within a certain range, which seriously affects the patient's recovery, not only increasing the patient's pain, but also possibly leading to surgical failure and the need for further surgery.

[0003] During the postoperative rehabilitation process after hip replacement, the cushion is an important auxiliary device for patients in daily use. A suitable cushion not only provides a comfortable sitting posture for the patient, reducing the pressure on the hips, but also to some extent, helps maintain the correct position and stability of the hip joint.

[0004] Currently, there are some cushions on the market for use after hip replacement, but most of their functions are relatively single. Some cushions only focus on comfort, using soft materials to reduce the pressure on the patient's hips, but lack effective design in preventing hip dislocation. These cushions cannot effectively limit the position of the patient's legs, and the patient's legs may still unconsciously lean to one side when sitting, especially in the early postoperative period when the body's balance and muscle control ability are poor. This improper leg position can easily lead to abnormal stress on the hip joint, increasing the risk of dislocation. SUMMARY

[0005] To solve the above technical problems, the present application provides a hip replacement postoperative dislocation prevention cushion structure to solve the problem that the existing cushion cannot effectively limit the position of the patient's legs and the effect of preventing hip dislocation is not good and the operation is not convenient.

[0006] A hip replacement postoperative dislocation prevention cushion structure, comprising a cushion mechanism and a limiting frame mechanism;

[0007] The cushion mechanism comprises a cushion assembly, the bottom of the cushion assembly is provided with a fixed shaft frame assembly, and the outer side of the fixed shaft frame assembly is installed with a pawl assembly;

[0008] The limiting frame mechanism comprises a limiting frame assembly rotatably installed on a fixed shaft frame assembly, and a pull rope assembly is arranged in the limiting frame assembly;

[0009] The cushion assembly comprises a cushion body, and a clamping groove is formed in the front side of the cushion body;

[0010] The limiting frame assembly comprises a limiting frame body, one end of the limiting frame body penetrates through a shaft rod, one end of the shaft rod is fixed with a ratchet wheel, the other end of the shaft rod is fixed with a curved rod, the distal end of the curved rod is fixed with a handle, and a movable slot is further formed in the ratchet wheel;

[0011] The fixed shaft frame assembly comprises a fixed shaft frame body, a rotating rod and a fixed block are fixed to the outer side of the fixed shaft frame body, and one side of the fixed block is fixed with a spring one;

[0012] The fixed shaft frame body is fixedly installed at the bottom of the cushion body, and the shaft rod is limited to rotate and is clamped in the fixed shaft frame body;

[0013] The pawl assembly comprises a pawl body, and an inclined push block is fixed to the outer side of the pawl body;

[0014] The pawl body is limited to rotate and is clamped in the rotating rod, the spring one drives the pawl body to abut against the ratchet wheel, thereby limiting the reverse rotation of the ratchet wheel;

[0015] The pull rope assembly comprises a traction rope and a spring two, one end of the traction rope is fixed with a T-shaped push plate, and the other end of the traction rope is fixed with a traction ball;

[0016] The T-shaped push plate is slidably clamped in the movable slot, the spring two is sleeved outside the T-shaped push plate, the spring two drives the T-shaped push plate to move away from the inclined push block, the traction rope penetrates through the inside of the shaft rod, the curved rod and the handle, and the traction ball is located outside the handle;

[0017] When it is needed to lift the limiting frame body, the handle is pulled towards the cushion body, so that the shaft rod and the ratchet wheel follow the rotation, after reaching a suitable position, the pawl body abuts against the ratchet wheel, thereby limiting the reverse rotation of the ratchet wheel, so that the limiting frame body is lifted and fixed;

[0018] When it is needed to lower the limiting frame body, the traction ball is pulled to move the T-shaped push plate, the movement of the T-shaped push plate moves the inclined push block outward, so that the pawl body rotates and is separated from the ratchet wheel, at this time, rotating the handle makes the limiting frame body be lowered.

[0019] Preferably, the outer side of the cushion body is further provided with a closed handrail.

[0020] Preferably, the inside of the cushion body and the closed handrail is filled with high-density memory sponge.

[0021] Preferably, the fixed shaft frame body is welded to the bottom of the cushion body.

[0022] Preferably, the surface of the handle is sleeved with a layer of silica gel sleeve with a thickness of 1-1.5mm.

[0023] Preferably, the traction rope is a steel wire rope.

[0024] Preferably, it further comprises a T-shaped table frame assembly, which comprises a T-shaped table plate, and a fixed insertion plate is fixed to the bottom of the T-shaped table plate.

[0025] The limiting frame body is further provided with a positioning insertion slot, and a threaded hole is further formed through the outer side of the limiting frame body.

[0026] The fixed insertion plate is clamped in the positioning insertion slot and fixed by a screw rod.

[0027] Preferably, the T-shaped table plate is parallel to the top surface of the limiting frame body.

[0028] Compared with the prior art, the present application has the following beneficial effects:

[0029] By setting the rotatable limiting frame body and the locking structure of the ratchet pawl cooperation, the patient after hip replacement surgery can obtain reliable protection when using the cushion. When the patient sits down, pull the handle towards the cushion body, the shaft rod drives the ratchet to rotate, the limiting frame body is lifted, and the pawl body is pressed against the ratchet under the action of the spring when reaching the appropriate position, effectively limiting its reverse rotation, thereby stably fixing the limiting frame body. At this time, the lifted limiting frame body can naturally separate the patient's legs, avoiding the tendency of both legs to one side, reducing the risk of hip dislocation due to abnormal stress from the mechanical principle, providing a safe environment for patient rehabilitation after surgery, and greatly enhancing the patient's sense of security when using the cushion.

[0030] Through the linkage design of the pull rope assembly and the pawl assembly, the operation of lowering the limiting frame body is extremely simple. When the patient needs to transfer or adjust the sitting posture from the cushion, only need to pull the traction ball outside the handle, the traction ball drives the T-shaped push plate to move through the traction rope, the T-shaped push plate pushes the inclined push block to make the pawl body rotate and disengage from the ratchet, thereby removing the restriction on the reverse rotation of the ratchet. At this time, the patient can smoothly lower the limiting frame body by rotating the handle, and the whole process does not require complex operation or additional tools, especially suitable for patients who are weak and have difficulty moving after surgery, effectively improving the practicability of the cushion and the convenience of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0032] Figure 2The exploded view of the present application;

[0033] Figure 3 The structure schematic diagram of the seat cushion assembly of the present application;

[0034] Figure 4 The structure schematic diagram of the fixed shaft frame assembly of the present application;

[0035] Figure 5 The structure schematic diagram of the pawl assembly of the present application; Figure 4 The enlarged view of A in the present application;

[0036] Figure 6 The structure schematic diagram of the pawl assembly of the present application;

[0037] Figure 7 The structure schematic diagram of the pawl assembly of the present application;

[0038] Figure 8 The structure schematic diagram of the pawl assembly of the present application;

[0039] Figure 9 The two-dimensional schematic diagram of the present application;

[0040] Figure 10 The structure schematic diagram of the third embodiment of the present application;

[0041] Figure 11 The structure schematic diagram of the pawl assembly of the present application;

[0042] Figure 12 The structure schematic diagram of the T-shaped table frame assembly of the present application.

[0043] In the figure: 1, seat cushion mechanism; 11, seat cushion assembly; 111, seat cushion body; 112, clamping groove; 113, closed handrail; 12, fixed shaft frame assembly; 121, fixed shaft frame body; 122, rotating rod; 123, fixed block; 124, spring I; 13, pawl assembly; 131, pawl body; 132, inclined push block; 2, limiting frame mechanism; 21, limiting frame assembly; 211, limiting frame body; 212, shaft rod; 213, ratchet wheel; 214, curved rod; 215, handle; 216, movable slot; 217, positioning slot; 218, threaded hole; 22, pull rope assembly; 221, traction rope; 222, spring II; 223, T-shaped push plate; 224, traction ball; 23, T-shaped table frame assembly; 231, T-shaped table plate; 232, fixed insertion plate. DETAILED DESCRIPTION

[0044] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0045] As Figures 1 to 8 shown:

[0046] Embodiment one: the present application provides a hip replacement post-dislocation prevention cushion structure, characterized in that, comprising a cushion mechanism 1 and a limiting frame mechanism 2;

[0047] The cushion mechanism 1 comprises a cushion assembly 11, and the bottom of the cushion assembly 11 is provided with a fixed shaft frame assembly 12, and the outer side of the fixed shaft frame assembly 12 is installed with a pawl assembly 13;

[0048] The limiting frame mechanism 2 comprises a limiting frame assembly 21 rotatably installed on the fixed shaft frame assembly 12, and the limiting frame assembly 21 is provided with a pull rope assembly 22;

[0049] The cushion assembly 11 comprises a cushion body 111, and the front side of the cushion body 111 is provided with a clamping groove 112;

[0050] The limiting frame assembly 21 comprises a limiting frame body 211, and one end of the limiting frame body 211 is penetrated and fixed with a shaft rod 212, one end of the shaft rod 212 is fixed with a ratchet wheel 213, the other end of the shaft rod 212 is fixed with a curved rod 214, the distal end of the curved rod 214 is fixed with a handle 215, and the ratchet wheel 213 is further provided with a movable groove 216;

[0051] The fixed shaft frame assembly 12 comprises a fixed shaft frame body 121, and the outer side of the fixed shaft frame body 121 is fixed with a rotating rod 122 and a fixed block 123, and one side of the fixed block 123 is fixed with a spring 124;

[0052] The fixed shaft frame body 121 is fixedly installed on the bottom of the cushion body 111, and the shaft rod 212 is limitingly rotatably clamped on the fixed shaft frame body 121;

[0053] The pawl assembly 13 comprises a pawl body 131, and the outer side of the pawl body 131 is fixed with an inclined push block 132;

[0054] The pawl body 131 is limitingly rotatably clamped on the rotating rod 122, the spring 124 drives the pawl body 131 to abut against the ratchet wheel 213, thereby limiting the reverse rotation of the ratchet wheel 213;

[0055] The pull rope assembly 22 comprises a traction rope 221 and a spring 222, one end of the traction rope 221 is fixed with a T-shaped push plate 223, and the other end of the traction rope 221 is fixed with a traction ball 224;

[0056] The T-shaped push plate 223 is slidingly clamped on the movable groove 216, the spring 222 is sleeved outside the T-shaped push plate 223, the spring 222 drives the T-shaped push plate 223 to move away from the inclined push block 132, the traction rope 221 penetrates through the inside of the shaft rod 212, the curved rod 214 and the handle 215, and the traction ball 224 is located outside the handle 215;

[0057] When the limiting frame body 211 needs to be lifted, the handle 215 is pulled towards the cushion body 111, so that the shaft rod 212 and the ratchet wheel 213 are followed to rotate, and after reaching the appropriate position, the pawl body 131 is abutted on the ratchet wheel 213, thereby limiting the reverse rotation of the ratchet wheel 213, so that the limiting frame body 211 is lifted and fixed;

[0058] When the limiting frame body 211 needs to be lowered, pulling the traction ball 224 will make the T-shaped push plate 223 move, and the movement of the T-shaped push plate 223 will make the inclined push block 132 move outward, so that the pawl body 131 rotates and is separated from the ratchet wheel 213, at this time, rotating the handle 215 will make the limiting frame body 211 be lowered.

[0059] As can be seen from the above, when in use, in the stage of lifting the limiting frame body 211, the handle 215 is pulled towards the cushion body 111, since the handle 215 is fixed at the end of the curved rod 214, the curved rod 214 is connected with the shaft rod 212, and the shaft rod 212 is limited to rotate and is clamped on the fixed shaft frame body 121, so that pulling the handle 215 will make the shaft rod 212 and the ratchet wheel 213 rotate, and the limiting frame body 211 is lifted, after reaching the appropriate position, since the pawl body 131 is limited to rotate and is clamped on the rotating rod 122, and the spring 124 drives the pawl body 131 to abut on the ratchet wheel 213, the pawl body 131 will limit the reverse rotation of the ratchet wheel 213, thereby making the limiting frame body 211 be fixed, providing reliable support for the patient, and the lifted limiting frame body 211 can avoid the patient's two legs from being inclined to one side, thereby effectively preventing the hip joint from being dislocated;

[0060] In the stage of lowering the limiting frame body 211, the traction ball 224 located outside the handle 215 is pulled, the traction ball 224 drives the T-shaped push plate 223 to move through the traction rope 221, the T-shaped push plate 223 is slidingly clamped on the movable groove 216 on the ratchet wheel 213, at this time, the movement of the T-shaped push plate 223 will push the inclined push block 132 to move outward, so that the pawl body 131 rotates and is separated from the ratchet wheel 213, thereby removing the limitation of the reverse rotation of the ratchet wheel 213, at this time, rotating the handle 215, the limiting frame body 211 will be smoothly lowered, the operation is simple, and the patient can be conveniently transferred from the cushion;

[0061] Since spring two 222 is sleeved outside T-shaped push plate 223 and drives it away from inclined push block 132, after releasing traction ball 224, spring two 222 drives T-shaped push plate 223 to reset, and then enables spring one 124 to drive pawl body 131 to reset.

[0062] Embodiment two: this embodiment is basically the same as the previous embodiment, the difference is that the outer side of the cushion body 111 is also provided with a closed handrail 113.

[0063] Specifically, the inside of the cushion body 111 and the closed handrail 113 is filled with high-density memory sponge.

[0064] Specifically, the fixed shaft frame body 121 is welded and fixed to the bottom of the cushion body 111.

[0065] Specifically, the surface of the handle 215 is sleeved with a layer of silica gel sleeve with a thickness of 1-1.5mm.

[0066] Specifically, the traction rope 221 is a steel wire rope.

[0067] As can be seen from the above, the closed handrail 113 added to the outer side of the cushion body 111 can provide more stable support for the patient during use, whether standing up, sitting down or adjusting the sitting posture, can better exert force with the help of the handrail 113, greatly enhancing the body balance, reducing the risk of hip dislocation caused by body shaking, providing reliable safety protection for the patient;

[0068] The high-density memory sponge filled in the inside of the cushion body 111 and the closed handrail 113 can automatically shape according to the body curve and pressure distribution of the patient, tightly fit the body, effectively disperse the pressure, and reduce the fatigue feeling caused by long-time sitting posture;

[0069] The steel wire rope is used as the traction rope 221, which has the characteristics of high strength and wear resistance, can withstand a large pulling force and is not easy to damage, ensuring the reliability and durability of the pull rope assembly 22 during frequent use.

[0070] As shown in Figures 9 to 12 :

[0071] Embodiment three: this embodiment is basically the same as the previous embodiment, the difference is that it also includes a T-shaped table frame assembly 23, the T-shaped table frame assembly 23 includes a T-shaped table plate 231, and the bottom of the T-shaped table plate 231 is fixed with a fixed insertion plate 232.

[0072] The limiting frame body 211 is also provided with a positioning insertion slot 217, and the outer side of the limiting frame body 211 is also provided with a threaded hole 218.

[0073] The fixed insertion plate 232 is embedded in the positioning insertion slot 217 and fixed by a screw rod.

[0074] Specifically, the T-shaped table plate 231 is parallel to the top surface of the limiting frame body 211.

[0075] As can be seen from the above, when the T-shaped table frame assembly 23 needs to be installed, the fixed plug plate 232 at the bottom of the T-shaped table plate 231 is aligned with the positioning slot 217 opened on the limiting frame body 211, and is slowly inserted until the fixed plug plate 232 is completely inserted and clamped in the positioning slot 217. Since the limiting frame body 211 is provided with a threaded hole 218 on the outside, at this time, the fixed plug plate 232 is fixed by using a screw through the threaded hole 218, so that the T-shaped table frame assembly 23 is stably installed on the limiting frame body 211, and the T-shaped table plate 231 is parallel to the top surface of the limiting frame body 211, thereby providing a flat and stable table surface for the patient to place articles, and facilitating the patient to place a water cup, books and other daily necessities, thereby improving the convenience of use.

[0076] The embodiments of the present application are given for example and description, although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as limiting the present application, and the ordinary skilled in the art can make changes, modifications, replacements and modifications to the above-mentioned embodiments within the scope of the present application, which should be included in the protection scope of the present application.

Claims

1. A seat cushion structure for preventing dislocation after hip replacement surgery, characterized in that, It includes a seat cushion mechanism (1) and a limit frame mechanism (2); The cushion mechanism (1) includes a cushion assembly (11), a fixed shaft frame assembly (12) is provided at the bottom of the cushion assembly (11), and a pawl assembly (13) is installed on the outside of the fixed shaft frame assembly (12). The limiting frame mechanism (2) includes a limiting frame assembly (21) rotatably mounted on the fixed shaft frame assembly (12), and a pull rope assembly (22) is provided inside the limiting frame assembly (21). The seat cushion assembly (11) includes a seat cushion body (111), and a slot (112) is provided on the front side of the seat cushion body (111). The limiting frame assembly (21) includes a limiting frame body (211), one end of which is fixed with a shaft (212), one end of which is fixed with a ratchet (213), the other end of which is fixed with a crank (214), and the end of which is fixed with a handle (215). The ratchet (213) is also provided with a movable groove (216). The fixed shaft bracket assembly (12) includes a fixed shaft bracket body (121), a rotating rod (122) and a fixing block (123) are fixed on the outside of the fixed shaft bracket body (121), and a spring (124) is fixed on one side of the fixing block (123). The fixed shaft frame body (121) is fixedly installed on the bottom of the seat cushion body (111), and the shaft (212) is limited to rotate and is embedded in the fixed shaft frame body (121); The pawl assembly (13) includes a pawl body (131), and a slanted push block (132) is fixed to the outside of the pawl body (131). The pawl body (131) is limited to rotate and is locked onto the rotating rod (122). The spring (124) drives the pawl body (131) to press against the ratchet (213), thereby limiting the ratchet (213) to rotate in the opposite direction. The pull rope assembly (22) includes a traction rope (221) and a second spring (222). One end of the traction rope (221) is fixed with a T-shaped push plate (223), and the other end of the traction rope (221) is fixed with a traction ball (224). The T-shaped push plate (223) is slidably embedded in the movable groove (216), the second spring (222) is sleeved on the outside of the T-shaped push plate (223), the second spring (222) drives the T-shaped push plate (223) away from the inclined push block (132), the traction rope (221) passes through the inside of the shaft (212), the crank (214) and the handle (215), and the traction ball (224) is located on the outside of the handle (215); When it is necessary to raise the limit frame body (211), pull the handle (215) towards the seat body (111) so that the shaft (212) and ratchet (213) rotate. After reaching the appropriate position, the pawl body (131) abuts against the ratchet (213), thereby restricting the reverse rotation of the ratchet (213), so that the limit frame body (211) is raised and fixed. When it is necessary to lower the limit frame body (211), pulling the traction ball (224) will cause the T-shaped push plate (223) to move. The movement of the T-shaped push plate (223) will cause the inclined push block (132) to move outward, thereby causing the pawl body (131) to rotate and disengage from the ratchet (213). At this time, turning the handle (215) will cause the limit frame body (211) to be lowered.

2. The anti-dislocation cushion structure after hip replacement surgery as described in claim 1, characterized in that, The outer side of the seat cushion body (111) is also provided with a closed armrest (113).

3. The anti-dislocation cushion structure after hip replacement surgery as described in claim 2, characterized in that, The interior of the seat cushion body (111) and the enclosed armrest (113) is filled with high-density memory foam.

4. The anti-dislocation cushion structure after hip replacement surgery as described in claim 1, characterized in that, The fixed shaft frame body (121) is welded and fixed to the bottom of the seat cushion body (111).

5. The anti-dislocation cushion structure after hip replacement surgery as described in claim 1, characterized in that, The surface of the handle (215) is covered with a silicone sleeve with a thickness of 1-1.5mm.

6. The anti-dislocation cushion structure after hip replacement surgery as described in claim 1, characterized in that, The traction rope (221) is a steel wire rope.

7. The anti-dislocation cushion structure after hip replacement surgery as described in claim 1, characterized in that, It also includes a T-shaped table frame assembly (23), which includes a T-shaped tabletop (231) and a fixing plate (232) fixed to the bottom of the T-shaped tabletop (231). The limiting frame body (211) is also provided with a positioning slot (217), and a threaded hole (218) is also provided through the outer side of the limiting frame body (211). The fixing plate (232) is inserted through and embedded in the positioning slot (217) and fixed by a screw.

8. The anti-dislocation cushion structure after hip replacement surgery as described in claim 7, characterized in that, The T-shaped tabletop (231) is parallel to the top surface of the limiting frame body (211).

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