Self-control type joint straightening obstacle correcting device

Abstract

The utility model discloses a self-control type joint straightening obstacle correcting device which comprises a pressure applying part, a connecting part and a control part. The base part is movably connected with the pressure applying part up and down and comprises a bottom plate and a connecting piece movably connected with the bottom plate; and the fixing part is connected with the base part. The knee joint straightening device can achieve the function of correcting the knee joint straightening disorder of a patient, is ingenious in structural arrangement and reasonable in arrangement, solves the problem of insufficient knee stretching in the prior art through cooperation of the fixing part and the pressure applying part, and can effectively avoid sequelae such as post-operation leg malformation and joint injury of the patient. The hand rocking bar is rotated to drive the pressure applying part to move vertically, so that the pressure applying acting force of the patient can be adjusted conveniently, and the problem that the correction strength of the postoperative knee straightening obstacle of the patient cannot be adjusted is solved.

Description

Technical Field

[0001] The present application relates to the technical field of corrective medical devices, and in particular to a self-controlled joint extension disorder correction device. Background Art

[0002] The development of total knee arthroplasty (TKA) has played an important role in solving some serious knee diseases. Ensuring the postoperative effect is an important indicator of the success of knee arthroplasty, including the normal range of motion of the knee joint after replacement. Ensuring the extension and flexion of the knee joint is equally important. However, existing studies have focused on how to promote good flexion of the replaced knee joint, and there are few studies on promoting knee extension. However, residual extension disorder of the affected knee after surgery will seriously affect the expected effect of the surgery and the patient's quality of life after surgery. One of the reasons for the extension disorder of the affected knee after TKA is poor postoperative physical therapy and lack of effective rehabilitation methods for the affected knee extension.

[0003] Nowadays, rehabilitation therapists are responsible for postoperative rehabilitation and exercise guidance in developed countries and a few large hospitals in China, but most hospitals in my country have not yet reached this goal. The rehabilitation guidance and supervision of patients are mainly undertaken by nursing staff, and nurses play an extremely important role in this stage. In view of the mechanism of postoperative knee extension disorder, the clinical practice often adopts the nursing method of heavy pressure on the affected knee joint after surgery to correct it, or adopts methods including plaster, splint fixation, joint orthosis (Joint Active Systems, referred to as JAS). However, the above measures have their own advantages and disadvantages. The early use of plaster to fix the affected limb is cumbersome, and the plaster is thick and heavy, making it difficult to observe the condition of the affected limb, and has been gradually eliminated; heavy pressure can play a dual role of compressing the knee joint to straighten and compressing the wound to stop bleeding to a certain extent, but the weight of the pressed weight is not easy to control and the weight is difficult to adjust, so it will cause great harm to the patient; JAS joint orthosis has a certain effect on improving the flexion contracture of the patient's joint, but there is also the problem of insufficient knee extension, and the device is expensive and not very practical.

[0004] Therefore, how to solve the problem that the correction strength of the patient's knee extension disorder after surgery cannot be adjusted is an urgent problem to be solved in the field of knee joint correction medical devices. Based on this, the present application provides a self-controlled joint extension disorder correction device. Utility Model Content

[0005] In order to solve or at least address the problems raised in the above-mentioned background technology, the present application provides a self-controlled joint extension disorder correction device.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A self-controlled joint extension disorder correction device, comprising:

[0008] A pressure applying part, comprising a pressure block and a screw arranged from bottom to top;

[0009] A base part movably connected to the pressure-applying part up and down, the base part comprising a bottom plate and a connecting piece movably connected to the bottom plate;

[0010] and a fixing portion connected to the base portion.

[0011] As a further solution of the present application: one end of the screw is connected to a hand-cranked rocker for controlling the rotation of the screw, and the other end is connected to a pressing block.

[0012] As a further solution of the present application: a slide rail is arranged on the bottom plate; the connecting member includes a plurality of sliders moving along the slide rail, and also includes a fixed block and a support rod, and the fixed block is respectively connected to the plurality of sliders through a plurality of support rods.

[0013] As a further solution of the present application: the fixing block is provided with a through hole with an internal thread, and the screw rod is rotatably connected to the fixing block through the through hole.

[0014] As a further solution of the present application: the support rod on one side of the fixed block is rotatably connected to the slider via a hinge; the support rod on the other side is detachably connected to the slider via a buckle.

[0015] As a further solution of the present application: the buckle includes a plug-in unit arranged on the support rod, and the slider is provided with a buckle opening connected to the plug-in unit, and the plug-in unit and the buckle opening are detachably connected.

[0016] As a further solution of the present application: the fixing portion includes a plurality of leg straps connected to the bottom plate, and the plurality of leg straps are detachably connected to each other.

[0017] As a further solution of the present application: the pressing block includes a pressing plate and a rubber pad which are arranged in sequence, and an arc-shaped groove is arranged inside the rubber pad.

[0018] As a further solution of the present application: the arc-shaped groove is located in the lower middle part of the rubber pad.

[0019] Compared with the prior art, this application has the following beneficial effects:

[0020] 1. The present application provides a self-controlled joint extension disorder correction device, including a pressure-applying part, including a pressure block and a screw arranged from bottom to top; a base part movably connected to the pressure-applying part, the base part including a bottom plate, and a connecting piece movably connected to the bottom plate; and a fixing part connected to the base part. The present application can realize the function of correcting the patient's knee extension disorder, the structure is ingenious and the layout is reasonable, and the cooperation between the fixing part and the pressure-applying part solves the problem of insufficient knee extension in the prior art, and can effectively avoid the occurrence of sequelae such as leg deformity and joint injury after surgery.

[0021] 2. The present application further provides a screw connection structure based on the pressure-applying part, and drives the pressure-applying part to move vertically by rotating the hand-cranked rocker, thereby facilitating the adjustment of the pressure force applied to the patient, thereby solving the problem that the correction strength of the patient's postoperative knee extension disorder cannot be adjusted.

[0022] 3. The present application further configures a slide rail sliding structure based on the fixed part. By configuring the slide rail sliding structure, the pressure-applying part and the fixed part can be displaced on the slide rail through a slider, thereby adjusting the pressure-applying position of the patient, adapting to the pressure-applying parts of different patients, and avoiding further damage caused by improper pressure-applying position.

[0023] 3. The present application further provides a rubber pad and an arc-shaped groove at the bottom of the pressure block, which can effectively fit the patient's knee joint structure, facilitate a closer fit between the pressure block and the patient's knee joint, and effectively avoid mechanical damage caused by the mismatch between the pressure-applying component and the knee joint structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of a self-controlled joint extension disorder correction device provided in an embodiment of the present application.

[0025] Figure 2 This is a schematic diagram of a self-controlled joint extension disorder correction device provided in an embodiment of the present application.

[0026] Figure 3 A side view of a self-controlled joint extension disorder correction device provided in an embodiment of the present application.

[0027] Figure 4 for Figure 1 Enlarged view of point A.

[0028] In the figure: 1-hand crank; 2-pressure block; 21-pressure plate; 22-rubber pad; 23-arc groove; 3-screw; 4-support rod; 5-hinge; 6-slide rail; 7-slider; 8-buckle; 9-leg strap; 10-bottom plate; 11-fixing block. DETAILED DESCRIPTION

[0029] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0030] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] After TKA surgery, patients may have problems with knee extension, which affects their postoperative recovery. Traditional correction of affected knee extension is mostly done through care methods such as plaster, splints, and heavy compression. However, compression methods that cannot adjust the force for a long time may cause greater additional joint damage to the knee joint. In the case of long-term use, it requires high professional skills of nursing staff and cannot achieve a good and stable correction effect. The expensive JAS orthotic device is mainly used to solve the flexion problem of the replaced knee joint, but there are problems of insufficient knee extension and high cost, and it is not generally practical.

[0033] See also Figure 1-3 , Figure 1 A front view of a self-controlled joint extension disorder correction device provided in an embodiment of the present application. Figure 2 A top view of a self-controlled joint extension disorder correction device provided in an embodiment of the present application. Figure 3 The side view of a self-controlled joint extension disorder correction device provided in an embodiment of the present application. The self-controlled joint extension disorder correction device comprises: a pressure-applying part, a fixing part, a connecting piece and a bottom plate 10.

[0034] In this embodiment, the pressure-applying part includes a pressure block 2 and a screw rod 3 arranged from bottom to top; a base part movably connected to the pressure-applying part, the base part includes a bottom plate 10, and a connecting member movably connected to the bottom plate; and a fixed part connected to the base part. One end of the screw rod 3 is connected to a hand-cranked rocker 1 for controlling the rotation of the screw rod 3, and the other end is connected to the pressure block 2. A slide rail 6 is arranged on the bottom plate 10; the connecting member includes a plurality of sliders 7 moving along the slide rail 6, and also includes a fixed block 11 and a support rod 4, and the fixed block 11 is respectively connected to a plurality of sliders 7 through a plurality of support rods 4.

[0035] To achieve the compression effect, in the embodiment of the present application, one end of the screw rod 3 is bolted to the hand-cranked lever 1, and the other end is connected to the pressure block 2 through a bearing in the pressure block 2. The hand-cranked lever 1 achieves a labor-saving effect by increasing the torque, and the bearing connection is used to prevent the pressure block 2 from rotating synchronously when the screw rod 3 rotates.

[0036] In order to achieve the technical effect of autonomously adjusting the compressive force, in the embodiment of the present application, the fixed block 11 is provided with a through hole with an internal thread, and the screw 3 is connected to the fixed block 11 through the through hole. The threaded connection between the screw 3 and the fixed block 11 can make the screw move in the vertical direction of the fixed block 11, driving the pressure block 2 to move in the same direction, thereby realizing the adjustment of the compressive force.

[0037] In order to facilitate the patient to use the device without moving the affected limb, the device connects the connecting piece to the fixing piece and realizes the effect of detachable opening and closing of the device. In the embodiment of the present application, the support rod 4 on one side of the fixing block 11 is rotatably connected to the slider 7 through a hinge 5; the support rod 4 on the other side is detachably connected to the slider 7 through a buckle 8.

[0038] The purpose is to achieve the technical effect of detachable connection between two support rods with buckles and a slider, so as to facilitate patients to wear the correction device provided by this application. In the embodiment of this application, the buckle 8 includes a plug-in arranged on the support rod 4, and the slider 7 is provided with a buckle opening connected to the plug-in, and the plug-in and the buckle opening are detachably connected.

[0039] In order to adapt to the needs of different patients for pressure application points and avoid further damage caused by improper pressure application position, in the embodiment of the present application, a slide rail sliding structure is provided, and the four sliders 7 are slidably connected to two parallel slide rails 6 in pairs, which can effectively adjust the pressure application point to meet the needs of patients.

[0040] In order to achieve the connection between the bottom plate 10 and the connecting member, two parallel slide rails 6 are respectively bolted to the two sides of the bottom plate.

[0041] See also Figure 4 , Figure 4 for Figure 1The enlarged view of point A shows that in order to prevent the patient from twisting his legs during the correction process, which would cause the pressure-applying part of the pressure block 2 to separate from the patient's knee joint, in an embodiment of the present application, two sets of leg straps 9 are connected to the base plate 10, and the upper ends of the two sets of leg straps 9 can be detachably connected by Velcro, which is convenient for fixing the patient's affected limb in the correction device provided in the present application to achieve a stable correction effect.

[0042] In order to make the pressing block 2 fit the patient's knee joint more closely, increase the patient's comfort, and avoid mechanical damage caused by the mismatch between the pressure-applying component and the knee joint structure, in the embodiment of the present application, the pressing block 2 includes a pressing plate 21 and a rubber pad 22 arranged in sequence, and an arc-shaped groove 23 is arranged inside the rubber pad 22. The arc-shaped groove 23 is located in the middle and lower part of the rubber pad 22.

[0043] In order to achieve the technical effect of fitting the knee joint, in the embodiment of the present application, the rubber pad 22 is connected to the bottom end of the pressure plate 21, and the arc-shaped groove 23 is arranged inside the rubber pad 22 to fit the shape of the knee joint.

[0044] The working principle of the present application is: open the buckle 8, turn the support rod 4 and the fixed block 11 outward with the hinge 5 as the base point, so as to facilitate the patient to place the affected limb on the base plate 10, and use a set of leg straps 9 to tie the patient's thigh and calf parts to the base plate 10 respectively, so as to prevent the patient from twisting his legs during the correction process, causing the pressure block 2 to be misaligned with the patient's knee joint; close the buckle 8, slide the slider 7, drive the fixed block 11 to move, and align the pressure block 2 with the patient's knee joint; when applying pressure, turn the hand crank 1 to make the screw 3 rotate and descend, drive the pressure block 2 to descend in height, and provide appropriate pressure on the patient's knee joint, so as to achieve the effect of helping the patient to restore the degree of knee joint extension; when decompressing, turn the hand crank 1 in the opposite direction to make the screw 3 rotate and rise, and drive the pressure block 2 to rise in height to adjust the pressure force. The present application can realize the function of correcting the patient's knee joint extension disorder, with ingenious structural setting and reasonable layout, which solves the problem of insufficient knee extension in the prior art and avoids the occurrence of sequelae such as leg deformity and joint injury after surgery. At the same time, the present application solves the problem of adjusting the correction force while achieving the correction of knee extension disorder, thereby achieving an excellent joint extension disorder correction function.

[0045] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A self-controlled joint extension disorder correction device, characterized in that: include: A pressure-applying portion, comprising a pressure block (2) and a screw rod (3) arranged from bottom to top; A base portion movably connected to the pressure-applying portion in an up-and-down manner, the base portion comprising a bottom plate (10) and a connecting piece movably connected to the bottom plate; and a fixing portion connected to the base portion.

2. The self-controlled joint extension disorder correction device according to claim 1, characterized in that: One end of the screw rod (3) is connected to a hand-cranked rocker (1) for controlling the rotation of the screw rod (3), and the other end is connected to a pressing block (2).

3. The self-controlled joint extension disorder correction device according to claim 1, characterized in that: A slide rail (6) is arranged on the bottom plate (10); the connecting member comprises a plurality of slide blocks (7) moving along the slide rail (6), and also comprises a fixed block (11) and a support rod (4); the fixed block (11) is respectively connected to the plurality of slide blocks (7) via the plurality of support rods (4).

4. The self-controlled joint extension disorder correction device according to claim 3, characterized in that: The fixing block (11) is provided with a through hole with an internal thread, and the screw rod (3) is rotatably connected to the fixing block (11) through the through hole.

5. The self-controlled joint extension disorder correction device according to claim 3, characterized in that: The support rod (4) on one side of the fixed block (11) is rotatably connected to the slider (7) via a hinge (5); the support rod (4) on the other side is detachably connected to the slider (7) via a buckle (8).

6. The self-controlled joint extension disorder correction device according to claim 5, characterized in that: The buckle (8) comprises a plug-in unit arranged on the support rod (4); the slider (7) is provided with a buckle opening connected to the plug-in unit; the plug-in unit and the buckle opening are detachably connected.

7. The self-controlled joint extension disorder correction device according to claim 1, characterized in that: The fixing portion comprises a plurality of leg straps (9) connected to the bottom plate (10), and the plurality of leg straps (9) are detachably connected to each other.

8. The self-controlled joint extension disorder correction device according to claim 1, characterized in that: The pressing block (2) comprises a pressing plate (21) and a rubber pad (22) which are arranged in sequence, and an arc-shaped groove (23) is arranged inside the rubber pad (22).

9. The self-controlled joint extension disorder correction device according to claim 8, characterized in that: The arc-shaped groove (23) is located in the lower middle part of the rubber pad (22).

Images