JP3004906U - Bone conduction wave detector for osteoporosis diagnostic device - Google Patents

Abstract

(57) [Abstract] [Purpose] Easy to use and wear, to improve the diagnostic accuracy of the osteoporosis diagnostic device and to improve the reliability of diagnostic data. [Structure] A tapping device 1 which is composed of a solenoid plunger having a tapping head 5 at the tip of a plunger rod 4 for giving a shock to a bone by tapping the skin, and a reciprocating motion of the plunger rod is repeated by a pulse current,
The wave receiver 9 is provided with an acceleration pickup that detects the conduction wave generated in the bone due to the impact.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bone conduction wave detector for impacting a bone in an osteoporosis diagnostic device and picking up a conduction wave propagating through the bone due to the impact.

[0002]

[Prior art]

 Although there are various types of osteoporosis diagnostic devices, the applicant company independently developed an osteoporosis diagnostic device having the configuration shown in FIG.

This diagnostic device impacts the bone by striking the skin, picks up the conduction wave propagating through the bone, analyzes the frequency of the conduction wave, calculates the bone density, and diagnoses the degree of progression of osteoporosis. The bone conduction wave detector is composed of a beating device that strikes the skin by hitting it and a wave receiver that picks up the conduction wave propagating in the bone. The tapping device 31 is connected to the control device 32 which also serves as a power supply device, and the wave receiver 33 is a fast Fourier transformer 34 for analyzing the frequency distribution of the conduction wave. The bone density is calculated from the analyzed frequency distribution data for diagnosis. It is connected to the microprocessor 35 in order, and the diagnostic result is output from the printer 36. Since it is non-invasive to the living body without using radiation or the like, it is possible to perform repeated diagnostics on a regular basis, and osteoporosis is possible. There is a merit that early detection and treatment of

[0004]

[Problems to be solved by the device]

 In the above-mentioned diagnostic device, it is necessary to give an appropriate impact to the bone and accurately pick up the conduction wave, and the bone conduction wave detector is an important element that influences the diagnostic accuracy of the diagnostic device.

[0005] In particular, in order to perform repetitive diagnosis and comparative diagnosis, the impact applied to the bone from the tapping device of the detector must be constant, and the detector must be easy to use. .

[0006]

【Purpose】

 The detector of the present invention is easy to use and wear, and can generate a predetermined tapping force to give an appropriate impact to the bone, and the impact can accurately capture the conduction wave propagating through the bone, thus resulting in osteoporosis. The purpose is to improve the diagnostic accuracy of the diagnostic device and improve the reliability of diagnostic data.

[0007]

[Means for Solving the Problems]

 Means and embodiments for carrying out the present invention are as follows.

<Means 1> A tapping device, which is composed of a solenoid plunger having a tapping head at the tip of a plunger rod that gives a shock to the bone by tapping the skin, and in which a reciprocating motion of a plunger rod is repeated by a pulse current, The wave receiver is provided with an acceleration pickup for detecting the waveguide generated in the bone by the impact.

<Means 2> A tapping device that is composed of a solenoid plunger having a tapping head at the tip of a plunger rod that impacts the bone by tapping the skin, and a reciprocating motion of a plunger rod is repeated by a pulse current, A grip sleeve is provided slidably along the outer periphery of a main shaft having an acceleration pickup for detecting the waveguide generated in the bone due to the impact, and a spring for urging the acceleration pickup in a direction to project from the grip sleeve. Is composed of a wave receiver installed between the grip sleeve and the main shaft.

<Means 3> A tapping device which is composed of a solenoid plunger having a tapping head at the tip of a plunger rod, which gives a shock to the bone by tapping the skin, and in which a reciprocating motion of a plunger rod is repeated by a pulse current, An accelerometer that detects the waveguide generated in the bone due to the impact is provided on one of the clamping pieces of the scissors-type clamp body that is compressed by a spring material such as a split spring so that the detection surface is on the inside. It consists of a receiver.

<Means 4> One of the clamping pieces of the scissors-type clamp body, which is pressed by a spring material such as a split spring, is provided with a tapping head that impacts the bone by tapping the skin with a tip of a plunger rod. It consists of a solenoid plunger that is equipped with a hammer, a hammer that reciprocates the plunger rod by a pulse current, and an accelerometer that detects the conduction wave generated in the bone due to the impact on the other clamping piece. I will set it up.

<Means 5> A tapping device which is composed of a solenoid plunger having a tapping head at the tip of a plunger rod, which gives a shock to the bone by tapping the skin, and a reciprocating motion of a plunger rod is repeated by a pulse current, The band is made of a stretchable material, and the inner surface of the band is provided with an acceleration pick-up for detecting a conduction wave generated in the bone due to the impact so that the detection surface is provided inside.

<Embodiment> In the above-mentioned means 2, a bridge is provided between the grip sleeves of the tapping device and the wave receiving device and fixed at appropriate intervals.

[0014]

【Example】

 Hereinafter, a specific example of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 (a) shows a beating device that strikes the skin at the site to be measured to give an impact to the bone, and the beating device 1 is composed of a solenoid plunger. The solenoid plunger is provided with a tapping head 5 made of hard rubber or plastic at the tip of a plunger rod 4, and a compression coil spring 6 for returning is provided on the lower surface of the plunger 3 and the inner bottom surface of the cylinder 7a. The plunger rod 4 projected by the excitation of the solenoid coil 2 is designed to be restored by the compression coil spring 6 when the coil is demagnetized.

A guide 8 formed in a cylindrical shape with a lower opening is provided in the lower portion of the housing 7, and the lower end edge is brought into close contact with the skin of the measurement site, so that the tapping head 5 is almost attached to the bone. It is designed to abut at a right angle.

Although the guide 8 is formed so as to surround the entire circumference of the tapping head 5 in the drawing, if the guide 8 has such a shape that the tapping device can be stably brought into contact with the measured portion. It is not necessary to surround the entire circumference of the tapping head.

FIG. 1 (b) shows a wave receiver that picks up a conduction wave propagating through the skin through the skin due to the impact from the beating device, and the wave receiver 9 shows the conduction wave generated in the bone due to the impact as an electric signal. An accelerometer 10 that changes to a main shaft is provided at the tip of a holder pipe 11, which is a main shaft, and a grip sleeve 12 concentric with the holder pipe is provided on the outer periphery of the holder pipe 11 so as to be slidable in the axial direction.

The grip sleeve 12 is a portion to be held by hand when the wave receiver 9 is used, and a compression coil spring is provided between an inner surface of an upper portion of the grip sleeve and a stopper 11a projecting near the lower end of the outer circumference of the holder pipe 11. 13 is provided so that when the user brings the acceleration pickup 10 into contact with the skin, the detection surface 10a of the acceleration pickup is brought into contact with the skin with an appropriate pressure by the elastic force of the compression spring. . This pressure is preferably 0.2 to 3.0 kg / cm @ 2, and a compression spring having a spring coefficient such that the pressure falls within this range is used. In the figure, reference numeral 14 is a signal line for sending an electric signal from the acceleration pickup 10 to the outside, and 15 is a cap at the upper end of the holder pipe.

Next, the operation of the detector configured as described above will be described. When the lower end edge of the guide 8 of the tapper 1 is brought into close contact with the skin of the site to be measured, and the pulse current is supplied to the coil from the controller that also functions as the power supply device, the plunger 3 resists the elastic return force of the compression spring 6 1 (a) It is pushed downward and the tapping head 5 at the lower end of the plunger rod 4 taps the skin. Further, when the energization is stopped, the plunger 3 is lifted upward by the elastic force of the compression spring 6, and the tapping head 5 returns.

Therefore, by adjusting the strength and frequency of the pulse current supplied to the tapping device 1, the strength, speed, and the number of times the tapping is repeated by the tapping head can be controlled.

The wave receiver 9 holds the grip sleeve 12 by hand and brings the detection surface 10a of the lower surface of the acceleration pickup 10 into contact with the skin. At this time, the acceleration pickup 10 is pressed against the skin by the elastic force of the compression spring 13 provided between the grip sleeve 12 and the holder pipe 11.

The detector according to the present invention is a device in which the bone is relatively shallow from the body surface in both the beating device and the wave receiving device, for example, the tibia front edge of the lower leg, the calcaneal side surface of the foot, and the spinous process of the vertebra. , It is used by abutting from above the skin against the radicle or ulnar stalk of the forearm.

FIG. 2 shows an example of use in the tibia T, in which the lower end edge of the guide 8 of the tapper 1 is brought into contact with the front edge of the tibia T 1, and the acceleration pickup 10 of the wave receiver 9 is also from the tapper. It is abutted with some distance.

FIG. 3 shows an example of use for the spinous process S of the vertebra V, in which a bridge 16 is provided between the tapping device 1 and the wave receiver 9, and the handle 17 is held by hand to be tapped. The device 1 and the wave receiver 9 can be brought into contact with each other.

In the above-described embodiment, both the tapping device and the wave receiver are used by holding them by hand, but a wave receiver of the type that is used by being fixed to the measurement site is shown in FIGS. Based on the explanation.

4 and 5 show a clamp type wave receiver 18, for example, a tip of one holding piece 20 a of a scissor type clamp body 20 to which a pressing force is applied by a ring-shaped split spring 19 or the like. An acceleration pickup 21 is provided on the inner side of the side so that the detection surface 21a is on the inner side, and the site to be measured (lower leg in the figure) is sandwiched by both sandwiching pieces 20a and 20b.

When this type of wave receiver 18 is attached to the measurement site, the acceleration pickup 21 is pressed against the measurement site with an appropriate pressure by the clamping force of the elastic force of the split spring 19. It is suitable for diagnosis in bones of the limbs such as the tibia T of the lower leg and the radius R and ulna U of the distal end of the forearm, and the tapping device 1 is used by applying it to a part apart from the wave receiver 18 to some extent.

When mounting on the lower leg as shown in FIG. 4, belts 23a and 23b fixed by pins 22a and 22b are provided at the tips of the clamping pieces 20a and 20b of the clamp body 20, The tips of the belts may be locked to each other so as to hold the opposite side of the clamp body 20 at the measurement site.

FIG. 6 shows an acceleration pickup 21 provided on one holding piece 20a of the clamp body 20 and a tapping device 1 provided on the other holding piece 20b. The clamp body 20 is attached to the calcaneus C for diagnosis. Shows the closed state.

FIG. 7 shows a band type wave receiver. In the wave receiver 24, an acceleration pickup 25 is provided on a stretchable band 26 so that a detection surface 25a faces inside.

This type is suitable for diagnosis in the radius R and the ulna U at the distal end of the forearm, and the tapping tool 1 is used by applying it to the skin on the upper surface of the intermediate portion of the radius R.

[0032]

[Effect of device]

 Since the detector of the osteoporosis diagnostic apparatus according to the present invention has the above-mentioned configuration, the following effects can be obtained.

Since the beating device taps the skin at a constant strength and time interval by being supplied with a pulse current, a constant impact can be accurately applied to the bone. In the wave receiver, the detection surface of the accelerometer is brought into contact with the bone at a constant pressure by the compression spring, the clamp body, or the band, and moreover, the bone conduction wave can be accurately captured.

Therefore, the detector can send accurate data to the osteoporosis diagnostic device, and can improve the reliability of diagnosis of the diagnostic device.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a view showing a state in which the detector of the present invention is used for a tibia.

FIG. 3 is a view showing a state in which the detector of the present invention is used for a vertebra.

FIG. 4 is a view showing another embodiment of the wave receiver in the detector of the present invention.

FIG. 5 is a view showing a state in which the above-mentioned wave receiver is used for a distal end of a forearm.

FIG. 6 is a view showing another embodiment of the detector of the present invention.

FIG. 7 is a view showing still another embodiment of the detector of the present invention.

FIG. 8 is a block diagram of an osteoporosis diagnostic apparatus using the detector according to the present invention.

[Explanation of symbols]

 1 tapping machine 2 solenoid coil 3 plunger 4 plunger rod 5 tapping head 6 compression spring 7 housing 7a cylinder 8 guide 9 wave receiver 10 acceleration pickup 10a detection surface 11 holder pipe 11a stopper 12 grip sleeve 13 compression spring 14 signal wire 15 cap 16 Bridge 17 Handle 18 Wave receiver 19 Ring split spring 20 Clamp body 20a, 20b Clamping piece 21 Acceleration pickup 21a Detection surface 22a, 22b Pins 23a, 23b Belt 24 Receiver 25 Acceleration pickup 25a Detection surface 26 Band T Tibia V Vertebra S spinous process R radius U ulna C calcaneus

Claims (5)

[Scope of utility model registration request] 1. A tapping device, which comprises a solenoid plunger having a tapping head at the tip of a plunger rod, which gives a shock to the bone by tapping the skin, and a tapping device in which the reciprocating motion of the plunger rod is repeated by a pulse current, and the bone by the impact. A bone conduction wave detector for an osteoporosis diagnostic apparatus, comprising a wave receiver including an acceleration pickup for detecting a conduction wave generated in the bone. 2. A tapping device comprising a solenoid plunger having a tapping head at the tip of a plunger rod, which strikes the bone by tapping the skin, and a tapping device in which the reciprocating motion of the plunger rod is repeated by a pulse current, and the bone by the impact. A grip sleeve is slidably provided along the outer periphery of a spindle having an acceleration pickup for detecting a conduction wave generated at the tip, and a spring for urging the acceleration pickup in a direction to project from the grip sleeve is provided between the grip sleeve and the spindle. A bone conduction wave detector of an osteoporosis diagnostic device, which comprises a wave receiver provided in the. 3. A tapping device, which comprises a solenoid plunger having a tapping head at the tip of a plunger rod, which strikes the bone by tapping the skin, and a tapping device in which the reciprocating motion of the plunger rod is repeated by a pulse current, a split spring, etc. More specifically, a scissor-shaped clamp body to which a clamping force is applied by a spring material, is provided with an accelerometer for detecting a conduction wave generated in the bone due to the impact, on one of the clamping pieces so that the detection surface is on the inside. Bone conduction wave detector for a new osteoporosis diagnostic device. 4. A tapping head for impacting the bone by tapping the skin is provided at the tip of the plunger rod on one of the clamping pieces of the scissor-type clamp body which is clamped by a spring material such as a split spring. A tapper composed of a solenoid plunger, in which the reciprocating motion of the plunger rod is repeated by a pulse current, is provided with an acceleration pickup for detecting the conduction wave generated in the bone due to the impact on the other clamping piece so that the detection surface is on the inside. A bone conduction wave detector for an osteoporosis diagnostic device. 5. A tapping device comprising a solenoid plunger having a tapping head for impacting a bone by tapping the skin at a tip of a plunger rod, and a tapping device in which a reciprocating motion of the plunger rod is repeated by a pulse current, and having elasticity. A bone conduction wave detector for an osteoporosis diagnostic apparatus, comprising: a wave receiver having an inner surface of a band made of a material and an acceleration pickup for detecting a conduction wave generated in the bone due to the impact so that the detection surface is on the inner side.