A knee range of motion measuring device

Abstract

This utility model discloses a knee joint range of motion measuring device, including an upper strap assembly, a lower strap assembly, and a connecting measuring assembly. Both the upper and lower strap assemblies include corresponding arc-shaped pads. The connecting measuring assembly includes a semi-circular block with angle scale lines. The middle of the semi-circular block is hinged to one end of a connecting plate, and the other end of the connecting plate has a pointer. The upper and lower strap assemblies are used to fix the patient's thigh and lower leg, respectively. Then, the connecting measuring assembly measures the angle of knee joint range of motion. The arc-shaped pad in the lower strap assembly is slidably connected to the connecting block in the connecting measuring assembly via a sliding groove seat, facilitating adjustment of the relative position between the upper and lower strap assemblies. During angle measurement, when the patient's thigh and lower leg bend simultaneously, the semi-circular block rotates around its center, and the angle is read from the position indicated by the pointer.

Description

Technical Field

[0001] This utility model relates to the field of knee joint measurement technology, specifically a knee joint range of motion measuring device. Background Technology

[0002] In the clinical rehabilitation phase after knee surgery, the rehabilitation effect is assessed through follow-up and auxiliary examinations, determining whether the knee joint range of motion has reached the expected level. The rehabilitation period typically lasts 3-6 months, and during this phase, it is necessary to frequently obtain information on the knee joint range of motion to evaluate the rehabilitation progress.

[0003] Currently, clinical practice mainly obtains information about knee joint mobility in two ways: one is through physical examination of the knee joint to subjectively judge the range of motion after surgery, or by observing the gait of the knee to assess the recovery of knee joint mobility; the other is by measuring the range of motion of the knee joint with a set square. Although this method can obtain data on the range of motion of the knee joint, it is highly subjective, resulting in poor data accuracy, and it cannot measure the range of motion of the joint in real time. Utility Model Content

[0004] The purpose of this invention is to provide a knee joint range of motion measuring device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a knee joint range of motion measuring device, comprising an upper strap assembly, a lower strap assembly, and a connecting measuring assembly. Both the upper and lower strap assemblies include corresponding arc-shaped pads. One side of the arc-shaped pad is fixedly connected to one end of the strap, and the other end of the strap is adhered to the other side of the arc-shaped pad. The connecting measuring assembly includes a semicircular block, a connecting plate, and a sliding groove seat. The semicircular block has angle scale lines. One end of the connecting plate is fixedly connected to the arc-shaped pad in the upper strap assembly. The middle of the semicircular block is hinged to the end of the connecting plate away from the arc-shaped pad in the upper strap assembly. The end of the connecting plate fixedly connected to the arc-shaped pad in the upper strap assembly has a pointer. One side of the semicircular block is fixedly connected to the connecting block. The connecting block is slidably connected in the sliding groove seat, and the sliding groove seat is fixed on the arc-shaped pad of the lower strap assembly.

[0006] Preferably, the slide seat is provided with a locking screw, and the connecting block is provided with a plurality of screw holes that match the locking screw. One end of the locking screw extends into the corresponding screw hole to limit and fix the connecting block in the slide seat.

[0007] Preferably, the bottom of the free end of the strap is provided with a Velcro burr surface, and the arc-shaped pad is provided with a corresponding Velcro soft surface. The free end of the strap is attached to the Velcro burr surface of the arc-shaped pad through the Velcro soft surface.

[0008] Preferably, one end of the connecting plate is fixedly connected to the bottom end of the connecting shaft, the top end of the connecting shaft is provided with a limiting plate, the middle part of the semicircular block is provided with a connecting ring, and the connecting ring is sleeved on the connecting shaft.

[0009] Preferably, the pointer is fixed to the connecting plate by a connecting rod, the pointer is located above the angle scale line, and is located between one end of the limiting plate and the connecting plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This device fixes the patient's thigh and calf areas respectively through the upper and lower strap components. Then, the range of motion of the knee joint is measured by the connecting measuring component. The arc-shaped pad in the lower strap component is slidably connected to the connecting block in the connecting measuring component through the sliding seat, so as to adjust the relative position between the upper and lower strap components, so that the upper and lower strap components can better wrap the patient's leg and be used normally as a protective gear.

[0012] 2. When measuring angles with this device, the patient's thigh and calf bend simultaneously, causing the semicircular block to rotate around the center. The angle is then read by the position indicated by the pointer, providing real-time joint angle data. Furthermore, because the device's position remains unchanged, the data measurement is more accurate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a knee joint range of motion measuring device according to an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the connection and measurement component structure according to an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of a semi-circular block structure according to an embodiment of the present invention;

[0016] Figure 4 This is a schematic diagram of the connecting plate structure according to an embodiment of the present invention.

[0017] In the attached diagram, the following are the reference numerals: 1. Upper strap assembly; 2. Lower strap assembly; 3. Connecting measuring assembly; 4. Arc-shaped pad; 5. Strap; 6. Semicircular block; 7. Angle scale line; 8. Connecting plate; 9. Pointer; 10. Connecting block; 11. Slide seat; 12. Locking screw; 13. Screw hole; 14. Connecting ring; 15. Connecting shaft; 16. Limiting plate. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] Please see Figures 1-4 This utility model provides a knee joint range of motion measuring device, including an upper strap assembly 1, a lower strap assembly 2, and a connecting measuring assembly 3. Both the upper strap assembly 1 and the lower strap assembly 2 include corresponding arc-shaped pads 4. One side of the arc-shaped pad 4 is fixedly connected to one end of a strap 5, and the other end of the strap 5 is adhered to the other side of the arc-shaped pad 4. The connecting measuring assembly 3 includes a semicircular block 6, a connecting plate 8, and a sliding groove seat 11. The semicircular block 6 is provided with angle scale lines 7. One end of the connecting plate 8 is fixedly connected to the arc-shaped pad 4 in the upper strap assembly 1. The middle part is hinged to the end of the connecting plate 8 away from the arc-shaped pad 4 in the upper strap assembly 1. The connecting plate 8 is fixedly connected to the end of the arc-shaped pad 4 in the upper strap assembly 1 and is equipped with a pointer 9. One side of the semi-circular block 6 is fixedly connected to the connecting block 10. The connecting block 10 is slidably connected in the slide seat 11. The slide seat 11 is fixed on the arc-shaped pad 4 of the lower strap assembly 2 so as to adjust the relative position between the upper strap assembly 1 and the lower strap assembly 2, so that the upper strap assembly 1 and the lower strap assembly 2 can better wrap the patient's leg and be used normally as a protective gear.

[0020] In one or more embodiments of this utility model, a locking screw 12 is provided on the slide seat 11, and a plurality of screw holes 13 matching the locking screws are evenly provided on the connecting block 10. One end of the locking screw 12 extends into the corresponding screw hole 13 to limit and fix the connecting block 10 in the slide seat 11, which is used to fix and adjust the relative position between the upper strap assembly 1 and the lower strap assembly 2.

[0021] In one or more embodiments of this utility model, the bottom of the free end of the strap 5 is provided with a Velcro burr surface, and the arc-shaped pad 4 is provided with a corresponding Velcro soft surface. The free end of the strap 5 is bonded to the Velcro burr surface of the arc-shaped pad 4 through the Velcro soft surface.

[0022] In one or more embodiments of this utility model, one end of the connecting plate 8 is fixedly connected to the bottom end of the connecting shaft 15, the top end of the connecting shaft 15 is provided with a limiting plate 16, the middle part of the semi-circular block 6 is provided with a connecting ring 14, the connecting ring 14 is sleeved on the connecting shaft 15 and is located between the limiting plate 16 and one end of the connecting plate 8.

[0023] In one or more embodiments of this utility model, the pointer 9 is fixed to the connecting plate 8 by a connecting rod, and the pointer 9 is located above the angle scale line 7. When measuring the angle, the patient's thigh and calf bend synchronously, causing the semicircular block 6 to rotate around the center, and then the angle is read by the position pointed to by the pointer 9.

[0024] In use, the patient's thigh and calf are fixed by the upper strap assembly 1 and the lower strap assembly 2, respectively. Then, the range of motion of the knee joint is measured by the connecting measuring assembly 3. The arc-shaped pad 4 in the lower strap assembly 2 is slidably connected to the connecting block 10 in the connecting measuring assembly 3 through the sliding seat 11, so as to adjust the relative position between the upper strap assembly 1 and the lower strap assembly 2, so that the upper strap assembly 1 and the lower strap assembly 2 can better wrap the patient's leg and be used normally as a protective gear. When measuring the angle, when the patient's thigh and calf bend simultaneously, the semi-circular block 6 rotates around the center, and then the angle is read by the position pointed to by the pointer 9.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A knee joint range of motion measuring device, characterized in that: The assembly includes an upper strap assembly (1), a lower strap assembly (2), and a connecting measuring assembly (3). Both the upper strap assembly (1) and the lower strap assembly (2) include corresponding arc-shaped pads (4). One side of the arc-shaped pad (4) is fixedly connected to one end of the strap (5), and the other end of the strap (5) is adhered to the other side of the arc-shaped pad (4). The connecting measuring assembly (3) includes a semicircular block (6), a connecting plate (8), and a sliding groove seat (11). An angle scale line (7) is provided on the semicircular block (6), and one end of the connecting plate (8) is fixedly connected to the upper strap assembly (11). The arc-shaped pad (4) in the strap assembly (1) is hinged at the middle of the semi-circular block (6) to the end of the connecting plate (8) away from the arc-shaped pad (4) in the upper strap assembly (1). The connecting plate (8) is fixedly connected to one end of the arc-shaped pad (4) in the upper strap assembly (1) and is provided with a pointer (9). One side of the semi-circular block (6) is fixedly connected to the connecting block (10). The connecting block (10) is slidably connected in the slide seat (11). The slide seat (11) is fixed on the arc-shaped pad (4) of the lower strap assembly (2).

2. The knee joint range of motion measuring device according to claim 1, characterized in that: The sliding seat (11) is provided with a locking screw (12), and the connecting block (10) is provided with a plurality of screw holes (13) that match the locking screw. One end of the locking screw (12) extends into the corresponding screw hole (13) to limit and fix the connecting block (10) in the sliding seat (11).

3. The knee joint range of motion measuring device according to claim 2, characterized in that: The bottom of the free end of the strap (5) is provided with a Velcro burr surface, and the arc-shaped pad (4) is provided with a corresponding Velcro soft surface. The free end of the strap (5) is attached to the Velcro burr surface of the arc-shaped pad (4) through the Velcro soft surface.

4. The knee joint range of motion measuring device according to claim 3, characterized in that: One end of the connecting plate (8) is fixedly connected to the bottom end of the connecting shaft (15). The top end of the connecting shaft (15) is provided with a limiting plate (16). The middle part of the semi-circular block (6) is provided with a connecting ring (14). The connecting ring (14) is sleeved on the connecting shaft (15) and located between the limiting plate (16) and one end of the connecting plate (8).

5. The knee joint range of motion measuring device according to claim 4, characterized in that: The pointer (9) is fixed on the connecting plate (8) by a connecting rod, and the pointer (9) is located above the angle scale line (7).

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