JPH0545290Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[0001]

[Industrial Application Field] The present invention relates to an improvement of a stethoscope.

[0002]

[Prior Art] Conventionally, there has been an instrument main body in which a pair of left and right main body arms are pivotally connected to each other at their proximal end so that the arms can be opened and closed according to the craniofacial width of the user, and a left arm and a right arm of the instrument main body. A pair of left and right listening earplugs are connected to the bent end of the arm, an auscultation tool that the user can hold in their hands and press against the diagnostic listening section, and a hearing earplug that records the diagnostic sounds captured by the auscultation tool. Stethoscopes equipped with a flexible conductive tube that guides the sound are known.

[0003]

[Problems to be solved by the invention] The conventional stethoscope has a pivot structure in which the base end pivot of the main body arm freely rotates and is locked at a predetermined opening/closing position by frictional engagement. When the frictional engagement force of the arm pivots decreases, the left and right main body arms open during use, causing the arm pivots to fall off the user's head.

[0004] Furthermore, in the conventional stethoscope, the left and right main body arms are formed of hollow members with a closed cross section, so flexible sound conducting tubes (left and right branch sound conducting tubes) are used.
There was also the problem that it was difficult to insert the arm into the inner hole, and it took time and effort to assemble the device.

[0005] The present invention was devised to solve the above-mentioned conventional problems, and its purpose is to make it easier to wear and use the instrument body, and to prevent the instrument body from detaching and falling from the user's head when wearing and using it. This is a stethoscope with a simple structure that has been improved so that it can reliably prevent this, and it is also easy to attach the stethoscope conductive tube (left and right branch conductive tubes) to the main body arm when assembling the device. This is what we are trying to provide.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the stethoscope of the present invention has the left main body arm 2 and the right main body arm 3 of the instrument main body 1 which can be attached to the user's head at different opening and closing angles. The arch-shaped curved part 2 has base end pivot parts 21, 31 that can regulate the movement of the springs, and distal end bent parts 22, 32 extending in opposite directions, and has spring attachment parts 23, 33 at intermediate positions inside the arch-shaped curved parts 20, 30.
The left body arm 2 and the right body Arm groove 2 of arm 3
The left and right branch sound conducting tubes 6 and 7 are fitted and held in the insides of the instrument body 1, and a curved leaf spring 11 is disposed along the inside of the instrument body 1.
One end 12 of 1 was fixed to the spring attachment part 23 of the left main body arm 2, and the other end 13 was fixed to the spring attachment part 33 of the right main body arm 3, thereby urging the main body arms 2 and 3 in the closing direction. It is characterized by

[0007]

[Operation] When the stethoscope having the above configuration is held open by holding the left arm 2 and the right arm 3 of the instrument body 1 with both hands, the curved leaf spring 11 disposed along the inside of the instrument body 1 stretches and bends. It deforms elastically so that it Therefore, when the opening operation of the arms 2 and 3 is released while the hearing earplugs 4 and 5 are in the ear canal,
The biasing force of the curved leaf spring 11 in the arm closing direction maintains the attachment and suspension state of the instrument body 1 to the user's head, and prevents the instrument body 1 from detaching from the user's head during use. Falling can be reliably prevented.

[0008] Furthermore, since the main body arms 2 and 3 are formed of arm members having a groove-shaped cross section, the sound transmission tubes of the stethoscope (the left and right branch sound conduction tubes 6 and 7) are easily adjusted when assembling the instrument. It can be easily attached to the main body arms 2 and 3 by a simple groove fitting operation.

[0009]

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

[0010] In the figure, 1 is a pair of left and right main body arms 2, 3.
The left main body arm 2 and the right main body arm 3 of this main body 1 have an opening/closing angle of 65° from the arm closed state in Fig. 1. A proximal pivot portion 21 that can be regulated to open the arm to the degree position;
31, and a tip bent portion 2 extending in the direction opposite to the arm.
2, 32, with spring mounting parts 23, 33 located at intermediate positions on the inner sides of the arcuate curved parts 20, 30, and sound-conducting spring mounting parts 23, 33 located on the outer side of the proximal pivot parts 21, 31 of the arcuate curved parts 20, 30. The arm member is made of synthetic resin and has a groove-shaped cross section (U-shaped in the embodiment) in which the tube insertion portions 24 and 34 are provided.

[0011] The base end pivot portion 21 of the left main body arm 2 has a first
The stopper end face 26a and the second stopper end face 26
A C-shaped circular disk outer circumferential wall 26 having a diameter b is provided, and the first stopper end face 26a and the second stopper end face 26
It has a configuration in which the notch angle between it and b is set at 155 degrees.

[0012] In addition, the base end pivot portion 31 of the right main body arm 3 has an arm base end fan-shaped portion 36 with an opening angle of 90 degrees, and is connected to this arm base end fan-shaped portion 36 and is connected to the arm base end fan-shaped portion 36 with an opening angle of 90 degrees. It is configured to have a cylindrical mouth portion 35 fitted between the plate center protruding tube 25 and the disk outer peripheral wall 26, and one end surface 36 of the sector-shaped portion 36.
a comes into contact with the first stopper end surface 26a as shown in FIG. 2 to regulate the arm closed state shown in FIG.
6b so as to be able to restrict the arm from being opened to the maximum extent.

[0013] The reference numeral 37 shown in FIG.
This arm stop is made of synthetic resin and has a disk flange 39 that abuts the fitting end surfaces of the arm base end pivots 21 and 31.

[0014] Reference numerals 4 and 5 shown in FIG. 1 are a pair of left and right hearing ear plugs that are connected to the bent end portions 22 and 32 of the left main body arm 2 and the right main body arm 3 of the instrument main body 1. The plugs 4 and 5 are fitted and fixed to the arm end protrusions of the left and right branch sound transmission tubes 6 and 7.

[0015] The left and right branch sound conducting tubes 6, 7 are flexible rubber hoses with a diameter of about 7 mm,
In-groove protrusions 2b and 3b that fit into the arm grooves 2a and 3a of the left main body arm 2 and the right main body arm 3 and are provided at multiple locations on the arms 2 and 3 (see FIG. 2).
A portion thereof extends outward through the sound conducting tube insertion portions 24, 34 of the arms 2, 3, and is connected to the two mouth portions of the three-way joint tube 8. There is.

[0016] Reference numeral 10 shown in FIG. 1 is an auscultation tool that the user (diagnosis person) can hold in his hand and press against the diagnostic listening section.
This is a conventionally known device in which a diaphragm (not shown) is installed inside the stethoscope, and the diagnostic sound captured by the auscultation device 10 is transmitted to a single sound conductive tube 9 connected to one mouth of the three-way joint tube 8.
(a flexible rubber hose with a diameter of about 7 mm) and hearing ear plugs 4,
It is now possible to lead to 5.

[0017] Reference numeral 11 denotes a curved leaf spring made of synthetic resin bent in an arc shape and arranged along the inside of the instrument main body 1. One end 12 of this curved leaf spring 11 is connected to the spring attachment part 23 of the left main body arm 2. The other end 13 is fitted and fixed to the spring mounting portion 33 of the right main body arm 3, and the main body arms 2 and 3 are biased to rotate in the closing direction with an appropriate elasticity. .

[0018]

[Effects of the invention] The stethoscope of the present invention has the above-mentioned configuration, and the left main body arm 2 and right main body arm 3 of the instrument main body 1 are pivoted by base end pivots 21 and 31 that can regulate the opening and closing angle. They are supported and connected in the arm closing direction by a curved leaf spring 11 disposed along the inside of the instrument main body 1, so when the main body arms 2 and 3 are held with both hands and pulled open,
The leaf spring 11 is elastically deformed to extend and bend.

[0019] Therefore, when the opening operation of the arms 2, 3 is released with the hearing earplugs 4, 5 inserted into the ear canals, the device is moved against the user's head by the biasing force of the curved leaf spring 11 in the arm closing direction. The mounted and suspended state of the main body 1 is maintained, and it is possible to reliably prevent the instrument main body 1 from falling away from the user's head during use.

[0020] Furthermore, since the main body arms 2 and 3 are formed of arm members having a grooved cross-sectional shape, the stethoscope conductive tube (left and right branch conductive tubes 6 and 7) can be easily adjusted when assembling the instrument. It can be easily attached to the main body arms 2 and 3 by a simple groove fitting operation.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a stethoscope according to an embodiment of the present invention, viewed from the back side.

FIG. 2 is an enlarged configuration diagram of the main parts of the stethoscope.

3: FIG. 3A is a cross-sectional view of the arm pivot portion taken along line A-A in FIG. 2; FIG. FIG. 3 is a cross-sectional view of the leaf spring attachment portion taken along line CC in FIG. 2;

[Explanation of symbols]

1...Equipment body 2... Left main body arm 3...Right side main body arm 2a, 3a...arm groove 4, 5...Left and right hearing earplugs 6,7...Branch sound tube 8...Three-way joint pipe 9...Single sound conducting tube 10...Auscultation tool 11...Curved leaf spring 12... One end of the spring 13... Spring other end 20, 30...A bow-shaped curved portion of the arm 21, 31...Proximal pivot of the arm 22, 32...Bending portion at the tip of the arm 23, 33...Spring attachment part of the arm 24, 34... Sound conduction tube insertion portion of the arm.

Claims (1)

[Scope of utility model registration request] Claim 1: A device main body in which a pair of left and right main body arms are pivotally connected at a base end pivot so that the main body arms can be opened and closed according to the craniofacial width of the user, and a left main body arm and a right main body arm of this device main body. A pair of left and right listening earplugs are connected to the bent portion of the tip, an auscultation tool that the user can hold in their hands and press against the diagnostic listening section, and the diagnostic sounds captured by the auscultation tool are guided to the listening earplugs. In a stethoscope equipped with a flexible sound conducting tube, the left main body arm and the right main body arm of the instrument main body have a proximal pivot part that can regulate the opening/closing angle and a distal end bending part extending in opposite directions. A spring mounting portion is formed at an intermediate position inside the bow-shaped curved portion by an arm member having a groove-shaped cross section and a sound conduction tube insertion portion provided at an outer portion located on the proximal pivot portion side of the bow-shaped curved portion;
The structure is such that the left and right branch sound conductive tubes are fitted and held in the arm grooves of the left main body arm and the right main body arm, and a curved leaf spring is arranged along the inside of the instrument main body, and one end of the curved leaf spring is arranged. A stethoscope characterized in that the other end of the left main body arm is fixed to a spring mounting portion of the left main body arm and the other end is fixed to the spring mounting portion of the right main body arm to bias the main body arm in a closing direction.