Assembly type orthosis knee joint

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to an assembly type orthosis knee joint. The orthosis knee joint comprises a connecting cover, an upper fixing piece, a lower fixing piece, an upper connecting strip, a lower connecting strip, a movable locking piece, a fixed locking piece, a plug pin, an angle adjusting piece, a ball pressing block, a spring, a gasket, a screw, a nut and the like. The upper connecting strip and the upper fixing piece are fixed through a screw, the lower connecting strip and the lower fixing piece are fixed through a screw, a ball pressing block, a spring and a screw are installed on the upper fixing piece, and a plug pin is installed on the movable locking piece. The connecting cover, the upper fixing piece, the lower fixing piece, the movable locking piece and the fixed locking piece are fixed together through screws, nuts and gaskets. The orthosis knee joint solves the problem that in the prior art, a traditional orthosis knee joint cannot fix or limit the knee joint of a patient within a certain range according to actual conditions, and the orthosis knee joint is simple in overall structure, convenient to operate, high in universality and easy to accept by the majority of patients.

Description

Technical Field

[0001] The utility model belongs to the technical field of rehabilitation medical equipment, and in particular relates to a component-type orthotic knee joint. Background Art

[0002] The knee joint is one of the most important joints in the human body. It has a complex structure and is composed of the lower end of the femur, the upper end of the tibia, and the articular cartilage and medial and lateral menisci in between. The knee joint is an important joint that ensures the normal standing, walking and various activities of the human body. Therefore, once the joint is fractured or damaged, it will have a great impact on a person's work and life.

[0003] In order to recover after a fracture injury, a knee brace is usually required for rehabilitation training, and the core component of the knee brace is the orthotic knee joint connected to the thigh fixation part and the calf fixation part. In recent years, with the continuous development of science and technology, many types of orthotic knee joints have appeared on the market. Most of the existing orthotic knee joints have complex structures, inconvenient operation, poor stability, and cannot fix the patient's knee joint or limit it within a certain range of motion according to actual conditions. Utility Model Content

[0004] The utility model provides a component-type orthotic knee joint, so as to at least solve the problem in the prior art that the traditional orthotic knee joint cannot fix or limit the patient's knee joint within a certain range according to the actual situation.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a modular orthosis knee joint with an upper fixing part and a lower fixing part arranged above and below; a fixed locking part is arranged at the upper end of the lower fixing part; a movable locking part is hinged at the lower end of the upper fixing part, and the lower part of the movable end of the movable locking part matches the top of the fixed locking part; a first fixing device is arranged on the upper fixing part and is located above the movable locking part, and the first fixing device is used to fix the movable locking part in a first preset position; a second fixing device is arranged on the movable locking part and the upper fixing part, and the second fixing device is used to fix the movable locking part in a second preset position; an angle adjustment plate is detachably connected to the bottom of the upper fixing part, and the angle adjustment plate is used to adjust the inclination angle of the upper fixing part; wherein, in the first preset position, the lower part of the movable end of the movable locking part is clamped with the top of the fixed locking part; in the second preset position, the lower part of the movable end of the movable locking part is separated from the top of the fixed locking part.

[0006] Furthermore, an upper connecting strip is fixed to the upper end of the upper fixing piece by means of screws, and the upper connecting strip is used in conjunction with the thigh fixing piece to fix the patient's thigh.

[0007] Furthermore, a lower connecting strip is fixed to the lower end of the lower fixing piece by means of screws, and the lower connecting strip is used in conjunction with the calf fixing piece to fix the patient's calf.

[0008] Furthermore, the first fixing device is composed of a spherical pressure block and a spring, one end of the spring is embedded in the lower end of the upper fixing piece, and the other end is connected to the spherical pressure block.

[0009] Furthermore, the second fixing device is composed of a first pin hole, a second pin hole and a latch, the first pin hole is arranged on the movable locking member, the second pin hole is arranged on the upper fixing member, and when the movable locking member is in the first preset position, the latch is detachably arranged in the first pin hole, and when the movable locking member is in the second preset position, the latch is detachably inserted into the first pin hole and the second pin hole.

[0010] Furthermore, a spring is arranged in the second pin hole.

[0011] Furthermore, the lower fixing member and the fixing locking member are connected by interference fit.

[0012] Furthermore, a connecting cover is provided above the upper fixing member and the lower fixing member, and the connecting cover, the upper fixing member, the lower fixing member, the movable locking member and the fixed locking member are fixed together by screws, nuts and gaskets.

[0013] In summary, the advantages and positive effects of the utility model are:

[0014] 1. This orthosis knee joint product is divided into four models, and the appropriate model can be selected according to the patient's specific body size; each model provides six fixed angles and six ranges of motion. The appropriate angle can be determined according to the physical condition of different people and the appropriate accessories can be selected for installation.

[0015] 2. This product is a locked joint. After pulling the movable locking part upward and pressing the latch, it can be permanently unlocked and used as a free rotation joint. In the free rotation state, pull the movable locking part upward, the latch pops out, and it switches to a locked joint. The patient can perform this function at any time according to his or her own situation. The utility model is mainly used for the fixation and movement of the patient's knee joint. The overall structure of the product is simple, easy to operate, and has strong versatility, which is easily accepted by the majority of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is a schematic structural diagram of a modular orthotic knee joint provided in an embodiment of the utility model.

[0018] Figure 2 It is a schematic diagram of the ratchet-type structure of the knee joint of the component-type orthosis provided in the embodiment of the utility model.

[0019] Figure 3 It is a schematic diagram of the structure of a modular orthosis knee joint without a ratchet provided by an embodiment of the utility model.

[0020] The above drawings include the following reference numerals:

[0021] 1. Connecting cover; 2. Upper fixing piece; 3. Lower fixing piece; 4. Upper connecting strip; 5. Lower connecting strip; 6. Movable locking piece; 7. Fixed locking piece; 8. Latch; 9. Angle adjustment piece; 10. Ball pressure block. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] See also Figure 1-3 According to the embodiment of the utility model, a modular orthotic knee joint comprises: an upper fixing member 2 and a lower fixing member 3 are arranged above and below; a fixed locking member 7 is arranged at the upper end of the lower fixing member 3; a movable locking member 6 is hinged to the lower end of the upper fixing member 2, and the lower part of the movable end of the movable locking member 6 matches the top of the fixed locking member 7. The movable locking member 6 matches the top of the fixed locking member 7, so that the two parts are clamped and fit together to improve the stability of the modular orthotic knee joint.

[0024] The first fixing device is arranged on the upper fixing member 2 and is located above the movable locking member 6. The first fixing device is used to fix the movable locking member 6 at the first preset position, so that the movable locking member 6 is tightly connected with the fixed locking member 7. The second fixing device is arranged on the movable locking member 6 and the upper fixing member 2. The second fixing device is used to fix the movable locking member 6 at the second preset position. This design allows the locking state and the movable state of the modular orthosis knee joint to be switched through the second fixing device, thereby increasing the flexibility of the modular orthosis knee joint.

[0025] Angle adjustment plate 9 is detachably connected to the bottom of the upper fixing member 2. The angle adjustment plate 9 is used to adjust the tilt angle of the upper fixing member 2. This design makes the angle switching clearer and improves the practicality of the modular orthosis knee joint.

[0026] Among them, in the first preset position, the lower part of the movable end of the movable locking member 6 is clamped with the top of the fixed locking member 7; in the second preset position, the lower part of the movable end of the movable locking member 6 is separated from the top of the fixed locking member 7, and the orthotic knee joint can rotate freely, making the modular orthotic knee joint easier to operate.

[0027] When using it, the patient first determines the model and fixed angle of the orthosis knee joint according to the patient's physical condition, and then selects the corresponding connection cover 1, upper fixing part 2, lower fixing part 3, upper connecting strip 4, lower connecting strip 5, movable locking part 6, fixed locking part 7, latch 8, angle adjustment piece 9, spherical pressure block 10, spring, gasket, screw, nut and other accessories. After selecting the appropriate accessories, assemble the orthosis knee joint as required. After assembly, the upper connecting strip 4 of the orthosis knee joint is fixedly connected to the thigh fixing part, and the lower connecting strip 5 is fixedly connected to the calf fixing part. It is mainly used for the fixation and activity of the patient's knee joint. The overall structure of the product is simple, easy to operate, and has strong versatility, which is easily accepted by the majority of patients.

[0028] In specific implementation, the upper end of the upper fixing member 2 is fixed with an upper connecting bar 4 by screws, and the upper connecting bar 4 is used in conjunction with the leg ring to fix the patient's thigh, and the lower end of the lower fixing member 3 is fixed with a lower connecting bar 5 by screws, and the lower connecting bar 5 is used in conjunction with the leg ring to fix the patient's calf. The upper connecting bar 4 and the lower connecting bar 5 are divided into two models, and the patient can choose to adapt according to his or her own physical condition, thereby improving the flexibility of the knee joint of the modular orthosis.

[0029] In specific implementation, the angle adjustment piece 9 is divided into six specifications, namely 5°, 10°, 15°, 20°, 25°, and 30°, and the movable locking piece 6 and the fixed locking piece 7 used therewith are also divided into six specifications. The pre-assembly angle of the orthosis knee joint is 5°, and it can be assembled into products of 10°, 15°, 20°, 25°, and 30° according to the patient's requirements. This design makes the modular orthosis knee joint suitable for more patients.

[0030] In specific implementation, the movable locking member 6 and the fixed locking member 7 are divided into two structures, one structure uses a pawl for locking, and the other structure does not have a pawl. The use of the pawl structure not only improves the stability during locking, but also allows the angle of the knee joint of the modular orthosis to be flexibly adjusted, thereby reducing costs compared to traditional structures.

[0031] In specific implementation, the upper connecting bar 4 and the lower connecting bar 5 are divided into two types, and patients can choose to adapt according to their own physical conditions.

[0032] In specific implementation, the first fixing device is composed of a spherical pressure block 10 and a spring. One end of the spring is embedded in the lower end of the upper fixing member 2, and the other end is connected to the spherical pressure block 10, so that when locked, the spherical pressure block 10 squeezes the movable locking member 6 under the action of the spring, and the movable locking member 6 can quickly return to the second preset position and stably engage with the fixed locking member 7, so that the operation difficulty of the modular orthosis knee joint is reduced and the stability is improved.

[0033] In specific implementation, the second fixing device is composed of a first pin hole, a second pin hole and a latch 8. The first pin hole is arranged on the movable locking member 6, the second pin hole is arranged on the upper fixing member 2, a spring is arranged in the second pin hole, when the movable locking member 6 is in the first preset position, the latch 8 is detachably arranged in the first pin hole, and when the movable locking member 6 is in the second preset position, the latch 8 is detachably inserted into the first pin hole and the second pin hole. When unlocking with this design, the movable locking member 6 is pulled upward to press the latch, and the latch 8 is inserted into the first pin hole and the second pin hole, and the spherical pressure block squeezes the movable locking member under the action of the spring; when locking, the movable locking member 6 is pulled upward, and the latch pops out from the second pin hole under the action of the spring and is placed in the first pin hole, ensuring that switching is simple and not prone to failure.

[0034] In specific implementation, the gaskets for adjusting the overall movement of the lower fixing member 3 and the fixed locking member 7 are divided into five specifications. By selecting gaskets of different thicknesses, errors during machining are eliminated to ensure that the lower fixing member 3 and the fixed locking member 7 are just the right tightness during the overall rotational movement.

[0035] During specific implementation, a connecting cover 1 is provided above the upper fixing member 2 and the lower fixing member 3. The connecting cover 1, the upper fixing member 2, the lower fixing member 3, the movable locking member 6 and the fixed locking member 7 are fixed together by screws, nuts and gaskets. The connecting cover 1 is made of aluminum alloy. The characteristics of aluminum alloy are light weight, high strength, good plastic processing performance and corrosion resistance. The connecting cover 1 can be used not only to fix the upper fixing member 2 and the lower fixing member 3, but also to protect the internal structure of the knee joint of the modular orthosis.

[0036] In specific implementation, the movable locking member 6 and the fixed locking member 7 are made of stainless steel, which has the characteristics of high strength, high hardness, easy processing, good corrosion resistance, long service life, economy, practicality, environmental protection and safety.

[0037] In specific implementation, the upper fixing member 2, the lower fixing member 3, the upper connecting bar 4, and the lower connecting bar 5 are made of titanium alloy. Titanium alloy has low density, high strength, corrosion resistance, and good high and low temperature resistance. Therefore, it is lighter than many other metal structural materials and can still maintain its mechanical properties at low and ultra-low temperatures.

[0038] The above technical scheme only reflects the preferred technical scheme of the technical scheme of the utility model. Some changes that may be made to some parts thereof by technicians in this technical field all reflect the principles of the utility model and belong to the protection scope of the utility model. It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A modular orthotic knee joint, characterized in that: include: An upper fixing member (2) and a lower fixing member (3) are arranged above and below; A fixed locking member (7), wherein the fixed locking member (7) is arranged at the upper end of the lower fixing member (3); A movable locking member (6), wherein the movable locking member (6) is hinged to the lower end of the upper fixing member (2), and the lower part of the movable end of the movable locking member (6) matches the top of the fixed locking member (7); a first fixing device, the first fixing device being arranged on the upper fixing member (2), the first fixing device being located above the movable locking member (6), and the first fixing device being used to fix the movable locking member (6) at a first preset position; a second fixing device, the second fixing device being arranged on the movable locking member (6) and the upper fixing member (2), the second fixing device being used to fix the movable locking member (6) at a second preset position; An angle adjustment sheet (9), the angle adjustment sheet (9) being detachably connected to the bottom of the upper fixing member (2), and the angle adjustment sheet (9) being used to adjust the inclination angle of the upper fixing member (2); Wherein, in the first preset position, the lower part of the movable end of the movable locking member (6) is engaged with the top of the fixed locking member (7); in the second preset position, the lower part of the movable end of the movable locking member (6) is separated from the top of the fixed locking member (7).

2. The modular orthotic knee joint according to claim 1, characterized in that: An upper connecting strip (4) is fixed to the upper end of the upper fixing piece (2) by means of screws, and the upper connecting strip (4) is used in conjunction with the thigh fixing piece to fix the patient's thigh.

3. The modular orthotic knee joint according to claim 1, characterized in that: A lower connecting strip (5) is fixed to the lower end of the lower fixing piece (3) by means of screws, and the lower connecting strip (5) is used in conjunction with the calf fixing piece to fix the patient's calf.

4. The modular orthotic knee joint according to claim 1, characterized in that: The first fixing device is composed of a spherical pressing block (10) and a spring, one end of the spring is embedded in the lower end of the upper fixing member (2), and the other end is connected to the spherical pressing block (10).

5. The modular orthotic knee joint according to claim 1, characterized in that: The second fixing device is composed of a first pin hole, a second pin hole and a latch (8); the first pin hole is arranged on the movable locking member (6); the second pin hole is arranged on the upper fixing member (2); when the movable locking member (6) is in a first preset position, the latch (8) is detachably arranged in the first pin hole; when the movable locking member (6) is in a second preset position, the latch (8) is detachably inserted into the first pin hole and the second pin hole.

6. The modular orthotic knee joint according to claim 5, characterized in that: A spring is arranged in the second pin hole.

7. The modular orthotic knee joint according to claim 1, characterized in that: The lower fixing member (3) and the fixing locking member (7) are connected through interference fit.

8. The modular orthotic knee joint according to claim 1, characterized in that: A connection cover (1) is provided above the upper fixing member (2) and the lower fixing member (3); the connection cover (1), the upper fixing member (2), the lower fixing member (3), the movable locking member (6) and the fixed locking member (7) are fixed together by means of screws, nuts and washers.

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