CN116369902A - Standing position lower limb length difference measurement and evaluation device - Google Patents

Abstract

The invention discloses a device for measuring and evaluating the difference in length of lower limbs in a standing position, which relates to the field of medical equipment and includes a support base, a pedal, a lifting component, a control component, an analysis component and two sets of measuring rulers. The two pedals are respectively used by the measurer during the measurement The two feet are stepped on and placed, and the two sets of lifting components are used for the lifting of the two pedals. When measuring, it is judged that the two sides of the pelvis are in a horizontal position. The control component is used to control the two sets of lifting components to stop the lifting work, and the analysis component is used to analyze and measure. Judging that the two sides of the pelvis are in a horizontal position, two sets of measuring rulers are fixedly installed on the two pedals; through the design of the lifting component, analysis component and control component, the height of the two pedals is adjusted so that the measurer can stand in a state of symmetrical weight bearing Next, adjust the position of the short leg side pedal by raising it, so that the height of the left and right pelvis of the measurer is aligned horizontally, and at this time the difference in length between the measurer's lower limbs can be obtained.

Description

A device for measuring and evaluating the difference in length of lower limbs in standing position

technical field

The invention relates to the field of medical equipment, in particular to a device for measuring and evaluating differences in length of lower limbs in a standing position.

Background technique

Today, it is not uncommon to have unequal lengths of the lower limbs caused by a series of reasons such as hip dysplasia, malunion of old fractures of the lower limbs, bone and joint infections of the lower limbs, pelvic tilt, scoliosis, etc. Non-surgical treatments such as braces In the case of significant functional impairment that cannot be relieved by treatment, persistent joint pain, and rapid disease progression, doctors usually choose hip replacement, osteotomy and other surgical methods according to the cause.

In the preoperative planning stage before this type of operation officially begins, due to the unequal length of the lower limbs of the case, it is necessary to measure the difference in the length of the lower limbs in the weight-bearing standing position, so as to provide information for the doctor to perform osteotomy or limb extension during the operation. The accurate length difference guides the operation, so that the patient can achieve the purpose of equal length of both lower limbs after operation, and improve the patient's claudication state. At present, it is generally used to temporarily find wood chips to support different thicknesses on the bottom of the patient's feet to measure, and then manually mark and measure the wood chips. This method is likely to cause measurement errors and have a negative impact on the final surgical results.

Contents of the invention

The object of the present invention is to design a measurement and evaluation device for the difference in length of lower limbs in standing position in order to solve the above problems.

The present invention achieves the above object through the following technical solutions:

A device for measuring and evaluating differences in length of lower limbs in a standing position, comprising:

support base;

Two pedals; the two pedals are respectively used for stepping and placing the measurer's feet during the measurement;

Two sets of lifting components; two sets of lifting components are respectively used for the lifting of two pedals, and the two sets of lifting components are installed on the support base;

Control component; when measuring, it is judged that both sides of the pelvis are in a horizontal position, and the control component is used to control the two groups of lifting components to stop the lifting work;

An analysis component; the analysis component is used to determine that both sides of the pelvis are in a horizontal position during analysis and measurement;

Two groups of measuring rulers; the two groups of measuring rulers are respectively fixedly installed on the two pedals.

The beneficial effects of the present invention are: through the design of the lifting assembly, the analysis assembly and the control assembly, the height of the two pedals is adjusted so that the measurer can adjust the position of the short-leg side pedals by raising them in the state of standing with symmetrical loads, so that the measurement The left and right pelvic heights of the measurer are aligned horizontally, and the difference in length between the measurer's lower limbs can be obtained at this time.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of a device for measuring and evaluating the difference in length of lower limbs in standing position according to the present invention;

Fig. 2 is a side-view structure schematic diagram of a device for measuring and evaluating the difference in length of lower limbs in standing position according to the present invention;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is a top view structure schematic diagram of a device for measuring and evaluating the difference in length of lower limbs in standing position according to the present invention;

Wherein the corresponding reference numerals are:

1-support base, 2-pedal, 3-measurement ruler, 4-support rod, 5-first sliding sleeve, 6-first moving rod, 7-first threaded rod, 8-second sliding sleeve, 9-the first Two moving rods, 10-the second threaded rod, 11-the third sliding sleeve, 12-the third moving rod, 13-the third threaded rod, 14-lifting assembly.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right" etc. are based on those shown in the accompanying drawings. Orientation or positional relationship, or the orientation or positional relationship that is usually placed when the product of the invention is used, or the orientation or positional relationship that is commonly understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation.

In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise specified and limited, terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection or a Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, Figure 3, Figure 4, and Figure 5, a device for measuring and evaluating the difference in length of lower limbs in a standing position includes:

support base 1;

Two pedals 2; the two pedals 2 are respectively used for stepping on and placing the measurer's feet during the measurement;

Two sets of lifting assemblies 14; two sets of lifting assemblies 14 are respectively used for the lifting of two pedals 2, and the two sets of lifting assemblies 14 are installed on the support base 1;

Control assembly; when measuring, it is judged that both sides of the pelvis are in a horizontal position, and the control assembly is used to control two groups of lifting assemblies 14 to stop the lifting work;

An analysis component; the analysis component is used to determine that both sides of the pelvis are in a horizontal position during analysis and measurement;

Two groups of measuring rulers 3; two groups of measuring rulers 3 are fixedly installed on two pedals 2 respectively.

Analysis components include:

Two photoelectric sensors;

The support rod 4; the first end of the support rod 4 is fixedly installed on the support base 1;

Horizontal measuring frame; the horizontal measuring frame is installed on the support rod 4, and during measurement, the transmitting end and the receiving end of a photoelectric sensor are respectively fixed on the horizontal measuring frame and the anterior superior iliac spine on one side of the pelvis.

The horizontal measuring frame includes a first adjustment piece, two sets of second adjustment pieces and two sets of third adjustment pieces. The first adjustment piece is used to adjust the height of the emitting ends of the two photoelectric sensors, and a set of second adjustment pieces is used to adjust the height of the photoelectric sensor. The longitudinal position of the emitting end of the photoelectric sensor, and a set of third adjustment members are used to adjust the lateral position of the emitting end of the photoelectric sensor. Two photosensors are not shown in the figure.

The first regulator includes:

The first sliding sleeve 5; the first sliding sleeve 5 can be slidably set on the support rod 4, and the first sliding sleeve 5 is provided with a threaded hole;

Two first moving rods 6; the first ends of the two first moving rods 6 are fixedly installed on both sides of the first sliding sleeve 5, and two sets of second adjustment parts are installed on the first moving rods 6 respectively;

The first threaded rod 7 ; the first threaded rod 7 is threadedly connected with the first sliding sleeve 5 .

The second regulator includes:

The second sliding sleeve 8; the second sliding sleeve 8 can be slidably fitted on the first moving rod 6, and the second sliding sleeve 8 is provided with a threaded hole;

The second moving rod 9; the first end of the second moving rod 9 is fixedly installed on the second sliding sleeve 8, and a third adjusting member is installed on the second moving rod 9;

The second threaded rod 10 ; the second threaded rod 10 is threadedly connected with the second sliding sleeve 8 .

The third regulator includes:

The third sliding sleeve 11; the third sliding sleeve 11 can be slidably fitted on the second moving rod 9, and the third sliding sleeve 11 is provided with a threaded hole;

The third moving rod 12; the first end of the third moving rod 12 is fixedly installed on the third sliding sleeve 11, and the emitting end of the photoelectric sensor is fixedly installed on the third moving rod 12;

The third threaded rod 13 ; the third threaded rod 13 is threadedly connected with the third sliding sleeve 11 .

Each group of lifting components 14 includes any one of hydraulic pumps, oil cylinders and air cylinders.

The surfaces of the two pedals 2 are all provided with anti-slip lines, and the anti-slip lines are in a wavy structure, which can ensure anti-slip.

Both pedals 2 are provided with pressure sensors, and the two pressure sensors are used to measure the force between the measurer's two feet and the two pedals 2 .

The control assembly includes two first relays, the control signal output ends of the two first relays are respectively connected to the control signal input ends of the two groups of lifting assemblies 14, and the two photoelectric sensors are respectively electrically connected to the two first relays.

The control assembly includes two second relays, the control signal output ends of the two second relays are respectively connected to the control signal input ends of the two groups of lifting assemblies 14, and the two pressure sensors are electrically connected to the two second relays respectively.

The first relay and the second relay used to control the lifting assembly 14 of the same group are connected in parallel to control the lifting and control the lifting assembly 14 to stop the lifting operation.

The working principle of the device for measuring and evaluating the difference in length of lower limbs in the standing position of the present invention is as follows:

Before use, adjust and lower the two pedals 2 to the lowest height, so that the two pedals 2 fit the top surface of the outer support base 1, and the doctor installs the photoelectric sensor on the anterior superior iliac spine on both sides of the measurer's pelvis. At the receiving end, the receiving ends of the two photoelectric sensors should be installed so that when both sides of the pelvis are in a horizontal position, the receiving ends of the two photoelectric sensors are at the same height, and the measurer directly steps on the two pedals 2 when standing with a symmetrical load. The surface is used to adjust the position of the emitting end of the photoelectric sensor through the functions of the first adjustment member, two sets of second adjustment members and two sets of third adjustment members;

Manually control the start of the lifting assembly 14 installed on the pedal 2 on the side of the lower position, and adjust the position of the short-leg side pedal 2 by raising, and the measuring ruler 3 rises and falls with the lifting of the pedal 2. When the measurement of the two pressure sensors When the data is the same, the signals of the two pressure sensors are transmitted to the second relay, and the second relay is disconnected, which can also be controlled by a microprocessor; when the short-leg side pedal 2 rises to a certain position, the horizontal position photoelectric sensors on both sides The transmitting ends of the photoelectric sensor are respectively aligned with the receiving ends at the anterior superior iliac spines on both sides. When the receiving end of the photoelectric sensor receives the signal from the transmitting end, it is transmitted to the first relay, and the first relay is disconnected; when controlling the lift assembly 14 on the same side When both the first relay and the second relay are disconnected, the lifting assembly 14 stops the lifting operation. At this time, the anterior superior iliac spines on both sides of the pelvis are at the same level, and the pelvis reaches a horizontal state. Measure the reading of the measuring ruler 3 to obtain the limb length difference.

The technical solution of the present invention is not limited to the limitations of the above-mentioned specific embodiments, and any technical deformation made according to the technical solution of the present invention falls within the protection scope of the present invention.

Claims (9)

1. A device for measuring and evaluating the difference in length of lower limbs in a standing position, characterized in that it comprises: support base; Two pedals; the two pedals are respectively used for stepping on the feet of the measurer; Two sets of lifting components; two sets of lifting components are respectively used for the lifting of two pedals, and the two sets of lifting components are installed on the support base; Control component; when measuring, it is judged that both sides of the pelvis are in a horizontal position, and the control component is used to control the two groups of lifting components to stop the lifting work; An analysis component; the analysis component is used to determine that both sides of the pelvis are in a horizontal position during analysis and measurement; Two groups of measuring rulers; the two groups of measuring rulers are respectively fixedly installed on the two pedals. 2. A kind of standing position lower limb length difference measurement and evaluation device according to claim 1, is characterized in that, analysis component comprises: Two photoelectric sensors; A support rod; the first end of the support rod is fixedly installed on the support base; Horizontal measuring frame; the horizontal measuring frame is installed on the support rod, and during measurement, the transmitting end and receiving end of a photoelectric sensor are respectively fixed on the horizontal measuring frame and the anterior superior iliac spine on one side of the pelvis. 3. The device for measuring and evaluating the difference in length of lower limbs in a standing position according to claim 2, wherein the horizontal measuring frame comprises a first adjustment part, two groups of second adjustment parts and two groups of third adjustment parts, the first adjustment Parts are used to adjust the height of the emitting ends of the two photoelectric sensors, a set of second adjusting members is used to adjust the longitudinal position of the emitting ends of the photoelectric sensors, and a group of third adjusting members is used to adjust the lateral position of the emitting ends of the photoelectric sensors. 4. A device for measuring and evaluating the difference in length of lower limbs in a standing position according to claim 3, wherein the first adjusting part comprises: The first sliding sleeve; the first sliding sleeve can be slidably fitted on the support rod, and the first sliding sleeve is provided with a threaded hole; Two first moving rods; the first ends of the two first moving rods are fixedly installed on both sides of the first sliding sleeve, and two sets of second adjustment parts are installed on the first moving rods respectively; The first threaded rod; the first threaded rod is threadedly connected with the first sliding sleeve. 5. A device for measuring and evaluating the difference in length of lower limbs in a standing position according to claim 4, wherein the second adjustment member comprises: The second sliding sleeve; the second sliding sleeve can be slidably fitted on the first moving rod, and the second sliding sleeve is provided with a threaded hole; The second moving rod; the first end of the second moving rod is fixedly installed on the second sliding sleeve, and a third adjusting member is installed on the second moving rod; The second threaded rod; the second threaded rod is threadedly connected with the second sliding sleeve. 6. A device for measuring and evaluating the difference in length of lower limbs in a standing position according to claim 5, wherein the third adjustment member comprises: The third sliding sleeve; the third sliding sleeve can be slidably fitted on the second moving rod, and the third sliding sleeve is provided with a threaded hole; The third moving rod; the first end of the third moving rod is fixedly installed on the third sliding sleeve, and the emitting end of the photoelectric sensor is fixedly installed at the head end of the third moving rod; The third threaded rod; the third threaded rod is threadedly connected with the third sliding sleeve. 7. The device for measuring and evaluating the difference in length of lower limbs in a standing position according to claim 2, wherein the control assembly includes two first relays, and the control signal output ends of the two first relays are respectively connected to the two groups of lifting assemblies. The control signal input terminal is connected, and the two photoelectric sensors are respectively electrically connected with the two first relays. 8 . The device for measuring and evaluating the difference in length of lower limbs in a standing position according to claim 2 , wherein each group of lifting components includes any one of hydraulic pumps, oil cylinders and air cylinders. 9 . The device for measuring and evaluating the difference in length of lower limbs in a standing position according to claim 1 , wherein the surfaces of the two pedals are provided with anti-slip lines, and the anti-slip lines have a wavy structure.

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