CN201244165Y - Knee long axis retractor - Google Patents

Abstract

A knee joint long-axis retractor includes a base plate, a thigh support plate, a calf support plate, a fixed pulley and weights; a strip-shaped rope-passing hole is opened on the base plate, and along the long-axis direction of the strip-shaped rope-passing hole, at least Three sets of positioning components are installed; one end of the thigh pad is hinged to the bottom plate, and the other end is hinged to the calf pad, and the free end of the calf pad is positioned by a set of positioning components; the fixed pulley is installed on the calf pad One end of the stay rope wound on the fixed pulley is used to connect the traction belt, and the other end passes through the bar-shaped rope hole opened on the bottom plate to connect with the weight. The retractor can not only meet the needs of the knee joint mobilization treatment, but also has a simpler structure, reduced volume, and is easy to move and carry.

Description

Knee long axis retractor

technical field

The utility model belongs to rehabilitation medical appliances, in particular to a medical appliance for human knee joint rehabilitation.

Background technique

Knee osteoarthritis is also known as degenerative knee arthritis and deforming knee arthritis. The incidence of this disease increases with age, especially in middle-aged and elderly people, and the prevalence rate increases significantly. Patients mainly present with joint pain, locking, and dysfunction. At present, the treatment of knee osteoarthritis mostly adopts drugs, nerve block therapy, surgical treatment and simple physical factor treatment, but the effects are not satisfactory. Joint mobilization can relieve the clinical symptoms of patients very well. It is a safe, effective and painless treatment technique. However, manual operation is not only difficult to guarantee the treatment effect, but also increases the labor intensity of medical staff.

Chinese patent ZL200620035234.0 discloses a knee joint rehabilitation traction bed, which includes a bed frame, a bed board placed on the bed frame, at least one set of slide rails installed on the rear of the bed frame along the length direction of the bed frame, and The front and rear hinge supports that can slide along the slide rails and can be fixed are matched with the slide rails. One end of the leg support frame is hinged to each other. The other ends of the thigh frame and the calf frame are respectively hinged on the front and rear hinge supports. The frame is composed of a sleeve, a telescopic rod that extends into the sleeve at one end and a locking handle that can fix the telescopic rod and the sleeve through the sleeve. The telescopic length is locked by the locking handle, and the thigh pad is fixed. On the thigh frame, the calf pad is connected to the calf frame through a sliding sleeve, and can slide along the direction of the frame. The angle between the thigh frame and the calf frame can be adjusted in the range of 30-180 degrees. The traction bed is connected with the calf frame Gravity traction device (including front fixed pulley, rear fixed pulley and weight). Although this kind of traction bed can be used for joint mobilization surgery to implement gravity traction with different flexion and extension angles for knee joint patients, its structure is relatively complicated and its volume is large, which will inevitably increase the manufacturing cost and storage space, and is not easy to carry.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a long-axis retractor for the knee joint. This retractor can not only meet the needs of the knee joint mobilization treatment, but also has a simpler structure and reduced volume. Easy to move and carry.

The knee joint long-axis tractor described in the utility model includes a base plate, a thigh backing plate, a calf backing plate, a fixed pulley and a weight; the bottom plate is provided with a strip-shaped rope-passing hole, along the long-axis direction of the strip-shaped rope-passing hole, There are at least three sets of positioning components installed on the bottom plate; one end of the thigh pad is hinged with the bottom plate, and the other end is hinged with the calf pad, and the free end of the calf pad is positioned by a set of positioning components in the positioning components; the fixed pulley is installed on The free end of the shank backing plate, one end of the stay rope wound on the fixed pulley is used to connect the traction belt, and the other end passes through the bar-shaped rope hole provided on the base plate to be connected with the weight.

According to clinical experience, the angle α between the thigh pad and the calf pad is 90°, 135°, 165°, and 180°, which are commonly used angles for the mobilization of the patient's knee joint. Therefore, at least three groups should be installed on the bottom plate. Position widgets. If three sets of positioning components are installed on the base plate, when the free end of the calf support plate is positioned by the first set of positioning components, the included angle α between the thigh support plate and the calf support plate is 90°, and the free end of the calf support plate is positioned by the second set of positioning components. When the group positioning member is positioned, the included angle α between the thigh pad and the calf pad is 135°; when the free end of the calf pad is positioned by the third set of positioning members, the angle between the thigh pad and the calf pad is α is 165°, that is, the installation position of the three sets of positioning components on the bottom plate should meet the angle requirements between the thigh pad and the calf pad. When the thigh pad and the calf pad are placed flat on the bottom plate, the thigh pad The angle α between the board and the calf pad is 180°.

The length L2 of the thigh pad and the length L1 of the calf pad can be designed into several sizes, so as to be suitable for patients of different heights.

Compared with the ZL200620035234.0 patent, the knee joint long-axis tractor described in the utility model has simplified structure, reduced volume, reduced cost, and is easy to move and carry.

Description of drawings

Fig. 1 is the first structural diagram of the knee joint long-axis tractor described in the utility model, and three sets of positioning members are installed on the base plate;

Fig. 2 is the second structural diagram of the knee joint long-axis retractor described in the utility model, four sets of positioning components are installed on the base plate;

Fig. 3 is a schematic diagram of the third structure of the knee joint long-axis retractor of the present invention, five sets of positioning components are installed on the bottom plate.

Among the figure, 1—bottom plate, 2—thigh pad, 3—calf pad, 4—fixed pulley, 5—stay rope, 6—weight, 7—positioning member, 8—rope passing hole.

Detailed ways

Below in conjunction with accompanying drawing, the structure of the utility model is further described.

Example 1

In this embodiment, the structure of the long-axis retractor for the knee joint is shown in FIG. 1 , including a bottom plate 1 , a thigh pad 2 , a calf pad 3 , a fixed pulley 4 and a weight 6 . The length L2=31cm, the width b=21cm of the thigh pad 2, the length L1=49cm, the width b=21cm of the calf pad 3, the bottom plate 1 is provided with a strip-shaped rope hole 8, along which the strip-shaped rope hole In the direction of the long axis, three sets of positioning members are installed on the bottom plate 1 at a certain interval (the distance between each set of positioning members should meet the following angle requirements between the thigh pad 2 and the calf pad 3), and each set of positioning members consists of Two rectangular columns are formed, and the two rectangular columns are symmetrically installed on both sides of the bar-shaped rope-passing hole 8 . One end of the thigh pad 2 is hinged with the base plate 1, and the other end is hinged with the calf pad 3. The free end of the calf pad 3 is positioned by one of the three sets of positioning members, and the free end of the calf pad 3 When positioned by the first group of positioning members 7-1, the angle α between the thigh pad 2 and the calf pad 3 is 90°, and when the free end of the calf pad 3 is positioned by the second group of positioning members 7-2, The included angle α between the thigh pad 2 and the calf pad 3 is 135°, and when the free end of the calf pad 3 is positioned by the third group of positioning members 7-3, the angle between the thigh pad 2 and the shank pad 3 The included angle α is 165°. The fixed pulley 4 is one, installed on the free end of the shank backing plate 3, one end of the stay rope 5 wound on the fixed pulley is used to connect the traction belt, and the other end passes through the strip-shaped rope hole 8 and the weight provided on the base plate. 6 connections.

Example 2

In this embodiment, the structure of the long-axis retractor for the knee joint is shown in FIG. 2 . The difference from Embodiment 1 is that four sets of positioning members are installed on the bottom plate 1 at a certain interval, and when the free end of the calf support plate 3 is positioned by the first set of positioning members 7-1, the distance between the thigh support plate 2 and the calf support plate 3 The angle α between them is 90°, and when the free end of the calf pad 3 is positioned by the second set of positioning members 7-2, the angle α between the thigh pad 2 and the calf pad 3 is 135°, and the calf pad When the free end of 3 is positioned by the third group of positioning members 7-3, the angle α between the thigh pad 2 and the calf pad 3 is 150°, and the free end of the calf pad 3 is positioned by the fourth group of positioning members 7-3. 4 During positioning, the included angle α between the thigh pad 2 and the calf pad 3 is 165°.

Example 3

In this embodiment, the structure of the long-axis retractor for the knee joint is shown in FIG. 3 . The difference from Embodiment 1 is that five sets of positioning members are installed on the bottom plate 1 at a certain interval, and when the free end of the calf support plate 3 is positioned by the first set of positioning members 7-1, the distance between the thigh support plate 2 and the calf support plate 3 The angle α between them is 90°, and when the free end of the calf pad 3 is positioned by the second group of positioning members 7-2, the angle α between the thigh pad 2 and the calf pad 3 is 120°, and the calf pad When the free end of 3 is positioned by the third group of positioning members 7-3, the angle α between the thigh pad 2 and the calf pad 3 is 135°, and the free end of the calf pad 3 is positioned by the fourth group of positioning members 7-3. 4 When positioning, the included angle α between the thigh pad 2 and the calf pad 3 is 150°, and when the free end of the calf pad 3 is positioned by the fifth set of positioning members 7-5, the thigh pad 2 and the calf pad will The angle α between 3 is 165°.

Claims (5)

1, a kind of knee joint major axis traction apparatus, comprise thigh backing plate (2), shank backing plate (3), fixed pulley (4) and counterweight (6), it is characterized in that also comprising base plate (1), offer bar shaped rope through (8) on the described base plate (1), along bar shaped rope through long axis direction, three groups of align members are installed on the base plate (1) at least

One end of thigh backing plate (2) and base plate (1) are hinged, and its other end and shank backing plate (3) are hinged, and the free end of shank backing plate (3) is located by one group of align member in the align member,

Fixed pulley (4) is installed in the free end of shank backing plate (3), and stay cord (5) one ends that are wrapped on the fixed pulley are used to connect traction belt, and its other end passes the bar shaped rope through of offering on the base plate (8) and is connected with counterweight (6).

2, knee joint major axis traction apparatus according to claim 1, it is characterized in that being equipped with on the base plate (1) three groups of align members, when the free end of shank backing plate (3) is located by first group of align member (7-1), angle α between thigh backing plate (2) and the shank backing plate (3) is 90 °, when the free end of shank backing plate (3) is located by second group of align member (7-2), angle α between thigh backing plate (2) and the shank backing plate (3) is 135 °, when the free end of shank backing plate (3) was located by the 3rd group of align member (7-3), the angle α between thigh backing plate (2) and the shank backing plate (3) was 165 °.

3, knee joint major axis traction apparatus according to claim 1, it is characterized in that being equipped with on the base plate (1) four groups of align members, when the free end of shank backing plate (3) is located by first group of align member (7-1), angle α between thigh backing plate (2) and the shank backing plate (3) is 90 °, when the free end of shank backing plate (3) is located by second group of align member (7-2), angle α between thigh backing plate (2) and the shank backing plate (3) is 135 °, when the free end of shank backing plate (3) is located by the 3rd group of align member (7-3), angle α between thigh backing plate (2) and the shank backing plate (3) is 150 °, when the free end of shank backing plate (3) was located by the 4th group of align member (7-4), the angle α between thigh backing plate (2) and the shank backing plate (3) was 165 °.

4, knee joint major axis traction apparatus according to claim 1, it is characterized in that being equipped with on the base plate (1) five groups of align members, when the free end of shank backing plate (3) is located by first group of align member (7-1), angle α between thigh backing plate (2) and the shank backing plate (3) is 90 °, when the free end of shank backing plate (3) is located by second group of align member (7-2), angle α between thigh backing plate (2) and the shank backing plate (3) is 120 °, when the free end of shank backing plate (3) is located by the 3rd group of align member (7-3), angle α between thigh backing plate (2) and the shank backing plate (3) is 135 °, when the free end of shank backing plate (3) is located by the 4th group of align member (7-4), angle α between thigh backing plate (2) and the shank backing plate (3) is 150 °, when the free end of shank backing plate (3) was located by the 5th group of align member (7-5), the angle α between thigh backing plate (2) and the shank backing plate (3) was 165 °.

5, according to the described knee joint major axis of arbitrary claim traction apparatus in the claim 1 to 4, it is characterized in that every group of align member be made up of two rectangle columns, two rectangle column symmetries are installed in the both sides of bar shaped rope through (8).

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