CN209915991U

CN209915991U - Myoelectric signal acquisition auxiliary measuring chair

Info

Publication number: CN209915991U
Application number: CN201822116982.7U
Authority: CN
Inventors: 王芗斌; 陈博; 侯美金; 喻娇; 熊凤; 傅升星; 杨凤娇; 李镇辉
Original assignee: Fujian University of Traditional Chinese Medicine
Current assignee: Fujian University of Traditional Chinese Medicine
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-01-10
Anticipated expiration: 2028-12-17

Abstract

The electromyographic signal acquisition auxiliary measuring chair comprises a chair surface and a chair back, and further comprises a locking device and a fastening device, wherein the chair back is arranged at the rear end of the chair surface, a beam frame is arranged on two sides of the auxiliary measuring chair, the beam frame is arranged at the front end of the chair surface and used for supporting a beam, the beam frame forms a relatively fixed included angle with the chair surface through the locking device, two ends of the beam are connected with the beam frame, the chair back is hinged with the chair surface, so that the chair back at least has a backrest state that the chair back is flattened to be coplanar with the chair surface and forms a right angle or an obtuse angle, and the fastening device is used for adjusting the relative included angle between the chair back and the chair surface; people can conveniently use the equipment to measure the isometric contraction force of muscles.

Description

Myoelectric signal acquisition auxiliary measuring chair

Technical Field

The utility model relates to a healthy product design field especially relates to a chair for assisting flesh electrical signal gathers.

Background

At present, most of gait analysis laboratories in China are equipped with surface electromyography equipment, an indispensable link in the surface electromyography measurement process is MVC measurement, although the MVC measurement has a uniform standard posture, the MVC measurement devices are different, and the composition of lower limb surface muscles measured by gait analysis is approximately the same. The prior art lacks a device convenient for myoelectricity testing, so that each laboratory adopts a respective method to obtain MVC, artificial measurement is not used, so that the MVC measurement has larger test deviation, an auxiliary measurement device is needed to ensure that the measurement is more standard and standard, the error of the artificial measurement is worth popularizing and eliminating, the test is more standard, and a subject can ensure that the maximum isometric contraction force is generated to obtain the best MVC data.

Disclosure of Invention

Therefore, it is necessary to provide a new type of auxiliary measuring device for measuring the isometric contraction force of muscles, which can be conveniently used by people.

For realizing above-mentioned purpose, the inventor provides an electromyography signal acquisition auxiliary measurement chair, including seat and the back of the chair, still include locking device, fastener, the back of the chair sets up in the seat rear end, and the crossbeam frame sets up in the both sides of auxiliary measurement chair, and the crossbeam frame sets up the front end at the seat, the crossbeam frame is used for supporting the crossbeam, the crossbeam frame passes through locking device and forms relatively fixed contained angle with the seat, the both ends and the crossbeam frame of crossbeam are connected, the back of the chair is articulated with the seat for the back of the chair has at least the exhibition flat and seat coplane and forms right angle or obtuse back state, fastener is used for adjusting the relative contained angle of the back of the chair and seat.

Specifically, still include first intermediate layer in the seat back, including first splint in the intermediate layer, the splint can outwards be taken out and form ascending support plane, still include the second intermediate layer in the back of the chair, include the second splint in the intermediate layer, the second splint can be taken out from the second intermediate layer.

Preferably, the cross beam is rubber.

Optionally, the cross-beam is a telescopic frame.

Optionally, the telescopic frame is a multi-section umbrella frame type telescopic frame.

Optionally the telescopic frame is a scissor telescopic frame.

Specifically, a breathing hole is arranged on the second clamping plate.

Particularly, the chair further comprises armrests which are arranged on two sides of the chair surface.

Different from the prior art, the technical scheme can conveniently provide sitting support or horizontal support for people during electromyographic signal acquisition and test, meet the force generation requirements of multiple muscle groups through the adjustable cross beam, effectively avoid muscle cramps, acquire electric signals of related muscle groups through the electrode array, and solve the problem that no electromyographic signal auxiliary measuring device exists in the prior art through auxiliary MVC measurement.

Drawings

FIG. 1 is a diagram of the chair for auxiliary measurement of sitting posture by collecting myoelectric signals according to the embodiment of the present invention;

FIG. 2 is a diagram of the chair for assisting measurement of prone position of the electromyographic signal acquisition according to the embodiment of the present invention;

FIG. 3 is a schematic view of a locking device according to an embodiment of the present invention;

FIG. 4 is a schematic view of a fastening device according to an embodiment of the present invention;

FIG. 5 is a schematic view of a first interlayer of a chair seat according to an embodiment of the present invention;

FIG. 6 is a schematic view of a reclining chair of an auxiliary measuring chair according to an embodiment of the present invention;

fig. 7 is a schematic view of the state of the chair seat with auxiliary measurement according to the embodiment of the present invention.

Description of reference numerals:

1. a chair surface;

11. a cross beam frame;

12. a cross beam;

13. a first splint;

14. a support member;

2. a chair back;

21. a second splint;

3. a locking device;

41. a fastener;

42. a hook member;

5. a person to be tested;

6. a handrail.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Please refer to fig. 1 and fig. 2, which are the present invention, a myoelectric signal acquisition auxiliary measuring chair, comprising a chair seat 1 and a chair back 2, further comprising a locking device and a fastening device, wherein the chair back 2 is arranged at the rear end of the chair seat 1, a beam frame 11 is arranged at the two sides of the auxiliary measuring chair, the beam frame is arranged at the front end of the chair seat, the beam frame is used for supporting a beam 12, the beam frame forms a relatively fixed included angle with the chair seat through the locking device 3, and the two ends of the beam are connected with the beam frame. The chair back is hinged with the chair surface, so that the chair back at least has a backrest state that the chair back is flattened and coplanar with the chair surface and forms a right angle or an obtuse angle, and the fastening device is used for fastening after the relative included angle between the chair back and the chair surface is adjusted. In the embodiment shown in fig. 1, the beam frame is at a negative angle to the seat, so that the beam is below the plane of the seat, and when the angle is fixed, the sitting posture of the experimenter is limited. In the past technical scheme, most gait analysis experiments are provided with surface electromyography measurement equipment, wherein the surface electromyography measurement equipment comprises electromechanical signal measurement, namely MVC measurement, although the MVC measurement has a uniform standard posture, the design of a device for the MVC measurement is lacked, and the chair back, the chair seat and the cross beam can be set at a specific angle through the design of the chair back, the chair seat and the cross beam, the test person 5 can directly sit on the chair without being guided for many times through the test person, the foot can pass through a gap between the cross beam and the chair seat and abut against the cross beam to achieve the MVC measurement posture of the sitting posture, the force development requirement of the tibialis anterior muscle of the sitting posture measurement can be met, and the force development requirement of the quadriceps femoris muscle of the sitting posture measurement can be met when the cross beam abuts against the far end of the front end of the tibia. In other embodiments shown in fig. 2, when the chair back is adjusted to be in the same horizontal line of the chair surface, and the cross beam is rotated to be in a state of being perpendicular to the chair surface by rotating the cross beam frame, the tested person is guided to lie prone, the knee joint bends to enable the heel tendon to abut against the cross beam, and the requirement of measuring the force of biceps femoris in the prone position can be met.

The cross beam has the basic function of meeting the requirement of abutting against and exerting force, in a preferred embodiment, the cross beam can be made of rubber, harder vulcanized rubber can be selected, and the cross beam can still provide enough rigid acting force while protecting personnel from being injured, so that the cross beam is more suitable for the requirement of MVC measurement. The rubber piece can be further connected with the dynamometer, in some embodiments, the dynamometer is a pressure sensor or a force couple, data of the dynamometer is converted into a computer for collection through analog-digital conversion equipment, the fluctuation of the collection result of the dynamometer in the time domain can be subjected to subsequent processing, whether the fluctuation of MVC measurement data in the time domain is reasonable or not and whether the MVC measurement data belong to errors or not can be analyzed in an auxiliary mode, the data obtained by the dynamometer can be used for an experimenter to directly evaluate whether the tested person exerts force correctly or not, and timely correction in the experimental process is facilitated. The data obtained by the dynamometer can be used together with the data collected by the MVC to better assist in the experiment.

The locking device and the fastening device are used for fixing two parts connected by the hinge structure at a relative position by matching the hinge structure, so as to fasten. In the prior art, many designs can be used for reference, and only two examples are shown here for illustration, in the embodiment shown in fig. 3, the locking device 3 is a bolt which is coaxial with the hinge structure between the beam frame 11 and the seat 1, when the bolt needs to be rotated, the bolt is loosened, when the bolt needs to be relatively locked, the bolt is tightened, and thus the technical effect that the beam frame and the seat form different angles can be achieved. In the embodiment shown in fig. 4, the fastening device is a fastening assembly, and comprises a hook member 42 and a plurality of clamping members 41, wherein the fixed end of the hook member is hinged with the chair back, the movable end of the hook member is matched with the clamping members, the clamping members are arranged on the side surface of the chair back and protrude out of the paper surface, the distances between the plurality of clamping members and the hinging shafts of the chair back and the chair back are different, in the figure, the chair back 2 and the chair back 1 are in a horizontal state, and the fastening assemblies can not be mutually hooked. When the chair back needs to be erected, the hook piece and one of the clamping pieces are mutually hooked, so that the chair back and the chair surface form a right angle or an obtuse angle. Thereby achieving the effect of mutually fixing the chair back and the chair seat. The above-described locking means and fastening means may also be replaced by each other, and may also be adapted to other designs of the prior art, as long as the general spirit of the present invention is met.

In other specific embodiments, as shown in fig. 5, the seat surface 1 further comprises a first interlayer, the first interlayer comprises a first clamping plate 13, the clamping plate can be drawn out outwards and forms an upward supporting plane, for better supporting in the embodiment shown in fig. 3, we can see that a single-row supporting member 14 can be designed in the interlayer, the supporting member can be a small cylinder as shown in the figure, or other limiting plates, etc., only the movement of the first clamping plate in the interlayer can be supported, and a sliding space is provided, the tail of the first clamping plate 13 can comprise a baffle 131, and the baffle can clamp the supporting member 14 when the clamping plate is drawn out, so that the supporting member cannot fall out of the interlayer. The support members 14 may also be of a double row design so that the clamping plates do not move up and down after being pulled out of the sandwich, thereby providing sufficient support force. Similar optimization design can refer to the design of the existing similar drawer, and the clamping plate has the requirement of the similar drawer and is used for meeting the similar function, and the detailed description is omitted. Similarly, the chair back further comprises a second interlayer, the interlayer comprises a second clamping plate 21, and the second clamping plate can be drawn out of the second interlayer. The second splint can be provided with breathing holes 211 (see fig. 6) for facilitating the prostration of the user, and a wider support plane is provided through the first splint and the second splint, so that the user can feel more comfortable when performing prone position test, and better support can be provided for knees and hands.

In a further embodiment, the first clamping plate is also required to provide support for the flatly-placed lower leg, so that the cross beam frame is required to be arranged as a telescopic assembly, and when the cross beam frame is contracted to a position where the cross beam abuts against the far end of the rear thigh of the tested person after the tested person is in the prone position, the auxiliary measuring chair can be used for collecting MVC (myov-lumbar measurement) data of the gluteus maximus in the prone position. In some embodiments, when the examinee is in a lateral position, the adjusting cross beam frame inclines towards the upper side of the first clamping plate, and the adjusting cross beam is adjusted to be abutted against the far end of the lower leg. In other embodiments, the device can be correspondingly provided with a scissor type telescopic frame, and an extension spring is fixed between the far end and the near end of the cross beam relative to the chair surface, so that the cross beam can effectively clamp the thighs and the like of a person to be tested. More operation modes of measuring the chair are provided through the above mode, make things convenient for more MVC to measure the application of position in the reality, have solved the problem of flesh electrical signal collection better, have improved the utility model relates to a practicality.

In the embodiment shown in fig. 7, our auxiliary measuring chair further includes armrests, which are disposed on both sides of the chair seat and support and protect the body of the person to be tested.

The above embodiments are only embodiments of the present invention, and not intended to limit the scope of the present invention, and although the above embodiments have been described, once the basic inventive concept is known, those skilled in the art can make other changes and modifications to these embodiments, so that the above embodiments are only embodiments of the present invention, and not intended to limit the scope of the present invention, and all the modifications made by the equivalent structures or equivalent processes in the specification and drawings are utilized or are directly or indirectly applied to other related technical fields, and all the modifications are included in the scope of the present invention.

Claims

1. The utility model provides a flesh electrical signal gathers auxiliary measurement chair, its characterized in that includes the seat and the back of the chair, still includes locking device, fastener, the back of the chair sets up in the seat rear end, and the crossbeam frame sets up in the both sides of auxiliary measurement chair, and the crossbeam frame sets up the front end at the seat, the crossbeam frame is used for supporting the crossbeam, the crossbeam frame passes through locking device and forms relatively fixed contained angle with the seat, the both ends and the crossbeam frame of crossbeam are connected, the back of the chair is articulated with the seat for the back of the chair has at least that the exhibition is flat and seat coplane and form right angle or obtuse back state, fastener is used for adjusting the relative contained angle of the back of the chair and seat.

2. The electromyographic signal acquisition auxiliary measuring chair of claim 1, further comprising a first interlayer in the chair surface, wherein the first interlayer comprises a first splint which can be pulled out and form an upward supporting plane, and further comprising a second interlayer in the chair back, wherein the interlayer comprises a second splint which can be pulled out from the second interlayer.

3. The electromyographic signal acquisition auxiliary measurement chair of claim 2, wherein the second splint has a breathing hole.

4. The electromyographic signal acquisition auxiliary measuring chair of claim 1, wherein the cross beam is rubber.

5. The electromyographic signal acquisition auxiliary measuring chair of claim 1, wherein the cross-beam is a telescoping rack.

6. The electromyographic signal acquisition auxiliary measuring chair of claim 5, wherein the telescoping rack is a multi-joint umbrella frame telescoping rack.

7. The electromyographic signal acquisition auxiliary measurement chair of claim 5, wherein the telescoping rack is a scissor-type telescoping rack.

8. The electromyographic signal acquisition auxiliary measuring chair of claim 1, further comprising armrests disposed on both sides of the chair surface.