CN108433937B - Knee joint straightening auxiliary exerciser - Google Patents

Abstract

The knee joint straightening auxiliary exerciser disclosed by the invention includes a stainless steel string combination, a connecting rod, a bending rod, a crankshaft, a tension spring, a spring elasticity adjuster, a spring fixed plate and a transcondylar auxiliary rotating ball; the stainless steel string combination It is connected to the connecting rod, and the connecting rod is connected to the bent rod through a crankshaft; one end of the crankshaft is fixed on the chute on the connecting rod through a support shaft, and the other end of the crankshaft is connected to the bent rod through a spring fixing plate; the bent rod A horizontal strut is provided on the rod, and the strut is connected to the connecting rod through a condylar auxiliary rotating ball; the tension spring is built into the crankshaft, one end of the tension spring is connected to the spring fixed plate, and the other end bypasses the support shaft and is connected to the spring fixed plate. Spring tension adjuster connection. The knee joint straightening and bending exercise device provided by the present invention has a reasonable structure and is convenient to operate. It provides patients with reasonable and scientific recovery exercises, effectively promotes rapid wound healing, prevents muscle atrophy, and improves joint range of motion.

Description

Knee joint straightening auxiliary exerciser

Technical field

The present invention relates to the technical field of medical devices, and in particular to a knee joint straightening auxiliary exerciser.

Background technique

Total Knee Arthroplasty (TKA) has become one of the surgical treatments for advanced degenerative osteoarthritis, rheumatoid arthritis, ankylosing spondylitis and other diseases. Its main purpose is to relieve pain caused by diseased joints, correct joint deformities, improve patients' knee joint function, and thereby improve patients' quality of life. With the widespread use of TKA, functional protection and rehabilitation training of postoperative muscle tissue have received increasing attention.

At this stage, the patient's post-operative recovery exercise mainly relies on the guidance of a doctor. The patient actively supports it with his hands or clamps and fixes it with a simple steel plate to perform contraction and stretching exercises. It is easy to atrophy without external force, and it is difficult to recover exercise ability after surgery. Moreover, if the patient stretches the muscles without accurate assistance, there is a risk of overstretching, which can easily cause damage, thereby prolonging the recovery time and affecting the recovery speed.

Therefore, there is an urgent need to design knee joint extension auxiliary exercisers to better protect muscle tissue, prevent muscle atrophy, provide patients with reasonable and scientific recovery exercises, and speed up patients' postoperative recovery.

Contents of the invention

The purpose of the present invention is to address the above technical problems. The knee joint straightening auxiliary exerciser provided by the present invention has a reasonable structure and can promote wound healing and prevent muscle atrophy in a short period of time after surgery through reasonable knee joint straightening exercises. Improve joint range of motion and strengthen quadriceps and hamstring muscles.

Technical solution of the present invention

In order to solve the above technical problems, the invention provides a knee joint straightening auxiliary exerciser, which specifically includes a stainless steel string combination, a connecting rod, a bending rod, a crankshaft, a tension spring, a spring elasticity adjuster, a spring fixed plate and a transcondylar auxiliary rotating ball. ; The stainless steel string combination is connected to the connecting rod, and the connecting rod is connected to the bent rod through a crankshaft; one end of the crankshaft is fixed on the chute on the connecting rod through a support shaft, and the other end of the crankshaft is connected to the connecting rod through a spring fixed plate. The bent rod is connected; the bent rod is provided with a horizontal strut, and the strut is connected to the connecting rod through the condylar auxiliary rotating ball; the tension spring is built into the crankshaft, and one end of the tension spring is connected to the spring fixed plate. The other end goes around the support shaft and is connected to the spring elastic adjuster.

In this application, when the femur and tibia are at an angle of 90°, the tension spring is set to the maximum stretching value, and the top of the tension spring is located in the six o'clock direction of the spring fixed plate; when performing straightening exercises, the fixed end of the tension spring slides to the spring fixed At the nine o'clock position, the tension spring contracts to provide assistance in stretching the calf upward and help the patient straighten and exercise.

When the femur and tibia are at an angle of 90°, set the tension spring to the maximum stretching value, and the top of the tension spring is located at the six o'clock direction of the spring fixed plate; when performing contraction training, the fixed end of the tension spring slides to the three o'clock direction of the spring fixed plate. position, the tension spring has a tendency to contract to provide assistance in stretching the calf toward the thigh, helping the patient perform contraction exercises.

In some embodiments, the knee joint straightening and bending exercise device further includes a distal fixed fulcrum of the knee joint, a proximal fixed fulcrum of the knee joint, and a distal fixed point of the femur. The distal fixed fulcrum of the knee joint is arranged on a stainless steel string. At the end position of the combination, the proximal fixation fulcrum of the knee joint is set at the connection position between the stainless steel string combination and the connecting rod, the distal femoral fixation point is set at the horizontal section of the bent rod; the spring elasticity adjuster is set Fixed fulcrum at the distal end of the knee joint.

In some embodiments, the bent rod and the support rod are fixed by fixing pins. A long slot is horizontally provided on the bent rod. The fixing pin can slide freely along the long slot on the bent rod and be locked. The support rod can move freely along the long groove on the curved rod to adjust the distance between the support rod and the connecting rod to meet the knee joint exercise needs of different patients.

In some embodiments, a scale plate is provided below the stainless steel string combination, and scale lines are provided on the scale plate. When adjusting the spring elasticity adjuster, the length of the stainless steel string combination is changed, and the scale plate is used as an auxiliary reference to adjust according to the patient's own strength conditions to ensure that the soft tissue around the knee joint is adequately stretched.

In some embodiments, the fixed end of the tension spring can slide freely along the center position of the spring fixed plate. The fixed end of the tension spring can move along the center of the spring fixed plate to achieve straightening and bending exercises of the knee joint.

In some embodiments, the position of the transcondylar auxiliary rotation ball is adjustable, and its rotation center line coincides with the patient's transcondylar line. In this technical solution, the transcondylar auxiliary rotating ball has more degrees of freedom, and the knee joint straightening and bending exercise device better fits the patient's limb, ensuring the stability of the exercise device during exercise, and assisting the patient in recovering the knee joint during training. Flexion, extension and rotation.

Beneficial effects of the present invention:

The knee joint straightening auxiliary exerciser provided by the invention has a reasonable structure and is convenient to operate. Through reasonable knee joint straightening exercises, it can better protect muscle tissue and prevent muscle atrophy, provide patients with reasonable and scientific recovery exercises, and speed up the recovery of patients. Postoperative recovery speed, early return to normal walking, and improved patient quality of life.

Description of drawings

The above-mentioned advantages of the present invention will become clearer and easier to understand through the detailed description in conjunction with the following drawings, which are only schematic and do not limit the present invention, wherein:

Figure 1 is a schematic structural diagram of the knee joint straightening auxiliary exerciser according to the present invention.

In the drawings, the components represented by each number are as follows:

1. Fixed fulcrum at the distal end of the knee joint; 2. Fixed fulcrum at the proximal end of the knee joint; 3. Fixed point at the distal end of the femur; 4. Spring elastic adjuster; 5. Scale plate; 6. Stainless steel string combination; 7. Tension spring; 8. Spring fixed plate; 9. Transcondylar auxiliary rotating ball; 10. Connecting rod; 11. Chute; 20. Bend rod; 21. Fixed pin; 30. Support rod; 40. Crankshaft.

Detailed ways

Figure 1 is a relevant drawing of the knee joint straightening and bending exercise device according to the present invention. The present application will be described in detail below with reference to specific embodiments and drawings.

The embodiments described here are specific implementations of the present invention and are used to illustrate the concept of the present invention. They are illustrative and illustrative and should not be construed as limiting the implementation of the present invention and the scope of the present invention. In addition to the embodiments recorded here, those skilled in the art can also adopt other obvious technical solutions based on the content disclosed in the claims and the specification of this application. These technical solutions include the use of any obvious technical solutions to the embodiments recorded here. Technical solutions for replacement and modification.

The drawings in this specification are schematic diagrams to assist in explaining the concept of the present invention, schematically showing the shapes of various parts and their mutual relationships. Please note that, in order to clearly show the structure of each component of the embodiment of the present invention, the same reference numerals are used to represent the same parts.

The structural diagram of the knee joint straightening auxiliary exerciser is shown in Figure 1. It specifically includes a stainless steel string combination 6, a connecting rod 10, a bending rod 20, a crankshaft 40, a tension spring 7, a spring elasticity regulator 4, and a spring fixed plate. 8 and the transcondylar auxiliary rotating ball 9; the stainless steel string combination 6 is connected to the connecting rod 10, and the connecting rod 10 is connected to the bending rod 20 through the crankshaft 40; one end of the crankshaft 40 is fixed on the connecting rod 10 through the support shaft 12 On the chute 11, the other end of the crankshaft 40 is connected to the bent rod 20 through the spring fixed plate 8; the bent rod 20 is provided with a horizontal strut 30, and the strut 30 assists the rotating ball 9 through the condyle. Connected to the connecting rod 10; the tension spring 7 is built into the crankshaft 40, one end of the tension spring 7 is connected to the spring fixed plate 8, and the other end is connected to the spring elastic regulator 4 around the support shaft 12.

In this application, the knee joint straightening and bending exercise device also includes a distal fixed fulcrum 1 of the knee joint, a proximal fixed fulcrum 2 of the knee joint and a distal femoral fixed point 3. The distal fixed fulcrum 1 of the knee joint is arranged on a stainless steel The end position of the string assembly 6, the proximal fixation fulcrum 2 of the knee joint is set at the connection position of the stainless steel string assembly 6 and the connecting rod 10, and the distal femoral fixation point 3 is set at the horizontal section of the curved rod 20 ; The spring elasticity adjuster 4 is arranged at the fixed fulcrum 1 at the distal end of the knee joint.

The distal fixation fulcrum 1 of the knee joint is bundled and fixed above the patient's ankle, the proximal fixation fulcrum 2 of the knee joint is bundled and fixed below the patient's knee joint, and the distal femoral fixation point 3 is bundled and fixed at the patient's thigh above the knee joint. , to complete the exercise of straightening and bending the knee joint.

The bent rod 20 and the support rod 30 are fixed by a fixing pin 21. A long slot is horizontally provided on the bent rod 20. The fixing pin 21 can slide freely along the long slot on the bent rod 20 and be locked. The support rod 30 can move freely along the long groove on the curved rod 20 to adjust the distance between the support rod 20 and the connecting rod 10 to meet the knee joint exercise needs of different patients.

The distal femoral fixed point 3 and the tibial proximal fixed point 2 are connected through a transcondylar auxiliary rotating ball 9; the distal fixed fulcrum 1 of the knee joint is equipped with a spring elastic adjuster 4, and the spring elastic adjuster 4 is made of stainless steel The string assembly 6 is connected to the proximal fixed fulcrum 2 of the knee joint; the end of the stainless steel string assembly 6 is connected to the tension spring 7, and the spring fixing plate 8 is set at the distal fixation point 3 of the femur, and the spring fixing plate 8 passes through the tension spring 7 is connected to the proximal fixed fulcrum 2 of the knee joint.

In this application, when the femur and tibia are at an angle of 90°, the tension spring 7 is set to the maximum stretching value, and the top of the tension spring 7 is located at the six o'clock direction of the spring fixed plate 8; when performing straightening exercises, the tension spring 7 is fixed The end slides to the nine o'clock position of the spring fixed plate 8, and the tension spring 7 shows a shrinking tendency to provide assistance for upward stretching of the calf to help the patient straighten and exercise. When the femur and tibia are at an angle of 90°, set the tension spring 7 to the maximum stretching value, and the top of the tension spring 7 is located at the six o'clock direction of the spring fixed plate 8; when performing contraction training, the fixed end of the tension spring 7 slides to the spring fixed plate 8 At the three o'clock position, the tension spring 7 shows a shrinking tendency to provide assistance in stretching the calf toward the thigh to help the patient perform contraction exercises.

A scale plate 5 is provided below the stainless steel string assembly 6, and scale lines are provided on the scale plate 5. When adjusting the spring elasticity adjuster 4, the length of the stainless steel string combination 6 is changed, and the scale plate 5 is used as an auxiliary reference to adjust according to the patient's own strength conditions to ensure that the soft tissue around the knee joint is adequately stretched.

The fixed end of the tension spring 7 can slide freely along the center position of the spring fixed plate 8 . The fixed end of the tension spring 7 can move along the center position of the spring fixed plate 8 to achieve straightening and bending exercise of the knee joint.

Specifically, when the femur and tibia are at an angle of 90°, it is set to the maximum stretching value of the tension spring 7, and the apex of the tension spring 7 is located in the six o'clock direction of the spring fixed plate 8; when performing straightening exercises, the fixed end of the tension spring 7 slides to The spring fixed plate 8 is at the nine o'clock position, and the tension spring 7 shows a shrinking tendency to provide assistance for upward stretching of the calf to help the patient straighten and exercise.

When performing contraction training, the fixed end of the tension spring 7 slides to the three o'clock position of the spring fixed plate 8, and the tension spring 7 shows a tendency to contract, providing assistance to stretch the calf toward the thigh to help the patient perform contraction exercises.

The position of the transcondylar auxiliary rotating ball 9 is adjustable, and its rotation center line coincides with the patient's transcondylar line. In this application, the transcondylar auxiliary rotating ball 9 has more degrees of freedom, and the knee joint straightening and bending exercise device better fits the patient's limb, ensuring the stability of the exercise device during exercise, and assisting the patient in recovering the knee joint during training. Flexion, extension and rotation.

Compared with the prior art, the knee joint straightening auxiliary exerciser provided by the present invention has a reasonable structure. Through reasonable knee joint straightening exercises, it can promote wound healing, prevent muscle atrophy, and improve joint activity in a short period of time after surgery. range, enhance the strength of the quadriceps and hamstring muscles, provide patients with reasonable and scientific recovery exercises, speed up the patient's postoperative recovery, return to normal walking as soon as possible, and improve the patient's quality of life.

The present invention is not limited to the above-mentioned embodiments. Anyone can produce various other forms of products under the inspiration of the present invention. However, regardless of any changes in its shape or structure, any product with the same or similar features as in the present application can be made. The technical solutions all fall within the protection scope of the present invention.

Claims (4)

1. Knee joint straightening auxiliary exerciser, which is characterized by including a stainless steel string combination (6), a connecting rod (10), a bending rod (20), a crankshaft (40), a tension spring (7), and a spring elastic adjuster. (4), spring fixed plate (8) and transcondylar auxiliary rotating ball (9); the stainless steel string combination (6) is connected to the connecting rod (10), and the connecting rod (10) is connected to the bent rod through the crankshaft (40) (20) Connection; one end of the crankshaft (40) is fixed on the chute (11) on the connecting rod (10) through the support shaft (12), and the other end of the crankshaft (40) is fixed on the spring plate (8) ) is connected to the curved rod (20); the curved rod (20) is provided with a horizontal strut (30), and the strut (30) is connected to the connecting rod (10) through the transcondylar auxiliary rotation ball (9) ; The tension spring (7) is built into the crankshaft (40), one end of the tension spring (7) is connected to the spring fixed plate (8), and the other end of the tension spring (7) bypasses the support shaft (12) and is connected to the spring elastic regulator (4) ; The fixed end of the tension spring (7) can slide freely along the center position of the spring fixed plate (8); The knee joint straightening auxiliary exerciser also includes a distal fixed fulcrum of the knee joint (1), a proximal fixed fulcrum of the knee joint (2) and a distal femoral fixed point (3). The distal fixed fulcrum of the knee joint (1 ) is disposed at the end of the stainless steel string assembly (6), the proximal knee joint fixed fulcrum (2) is disposed at the connection position between the stainless steel string assembly (6) and the connecting rod (10), the distal end of the femur The fixed point (3) is set at the horizontal section of the bent rod (20); the spring elasticity adjuster (4) is set at the fixed fulcrum (1) at the distal end of the knee joint. 2. The knee joint straightening auxiliary exerciser according to claim 1, characterized in that the curved rod (20) and the support rod (30) are fixed by a fixing pin (21), and a horizontal rod is arranged on the curved rod (20). long slot, the fixing pin (21) can slide freely along the long slot on the curved rod (20) and be locked. 3. The knee joint straightening auxiliary exerciser according to claim 1, characterized in that a scale plate (5) is provided below the stainless steel string combination (6), and a scale line is provided on the scale plate (5). . 4. The knee joint straightening auxiliary exerciser according to claim 1, characterized in that the position of the transcondylar auxiliary rotating ball (9) is adjustable, and its rotation center line coincides with the patient's transcondylar line.