WO2014146385A1

WO2014146385A1 - Combined-type stethoscope membrane assembly

Info

Publication number: WO2014146385A1
Application number: PCT/CN2013/079071
Authority: WO
Inventors: 单希杰
Original assignee: 无锡市凯顺医疗器械制造有限公司
Priority date: 2013-03-21
Filing date: 2013-07-09
Publication date: 2014-09-25
Also published as: CN103156635A; DE212013000288U1

Abstract

The present invention relates to a medical instrument accessory, in particular to a stethoscope accessory, and specifically to a combined-type stethoscope membrane assembly. The combined-type stethoscope membrane assembly comprises a colloid-wrapped part (1) and a membrane (4). The colloid-wrapped part (1) comprises a first ring belt platform (2) and a second ring belt platform (3). The diameter of the first ring belt platform (2) is smaller than that of the second ring belt platform (3). A first annular sidewall (5) is disposed between the first ring belt platform (2) and the second ring belt platform (3). A second annular sidewall (5) is disposed at the rim of the second ring belt platform (3) and extends towards a direction away from the first ring belt platform (2). The membrane (4) is attached to the end surface outside the first ring belt platform (2). The stethoscope accessory has strong audio frequency attenuation resistance capability and strong durability, and has a proper effective contact area, and can accurately acquire activity information of a visceral organ and help a user make a correct diagnosis decision.

Description

Composite stethoscope diaphragm assembly

The present invention relates to the field of medical device accessories and, more particularly, to a composite stethoscope diaphragm assembly.

Background technique

Stethoscopes are important medical devices for physicians to auscultate the sound changes of organs such as the heart, lungs and pulse, and to diagnose diseases. The stethoscope mainly includes the body of the head, the shaft, the hose, the ear hook and the diaphragm. The sound collection effect of the sound collecting cavity formed between the head body and the diaphragm has an important influence on the sound amplification function of the stethoscope, and thus the diaphragm plays a key role in the sound conduction process.

When the stethoscope collects the organ audio, the wavelength of the sound wave emitted by the organ is changed by the diaphragm, so that the changed audio is an audio that is easily recognized by the human ear, so the effective contact area of the diaphragm and the patient's body and the degree of contact fit are good for the listening effect. The impact is significant. When the contact area is limited and the degree of coincidence is not high, the audio attenuation will be severe, which will affect the user to make the correct diagnosis decision.

Chinese Patent Application No. 200920040509. 3 discloses a high elastic variability composite diaphragm, as shown in Fig. 6, the outer edge of the diaphragm is embedded in the circular ring belt having a smaller diameter, due to the circular ring The wrapping of the strip makes it difficult for the diaphragm to directly contact the patient's body, and needs to be properly pressed to increase the patient's pain. Moreover, when the contact mode collects the organ audio, the audio attenuation is more obvious, which reduces the accuracy of the user's judgment of the organ activity. Summary of the invention

It is an object of the present invention to provide a composite stethoscope diaphragm assembly that overcomes the problem of limited effective contact area of existing stethoscopes, making the effective contact area with the patient more reasonable. Another object of the present invention is to provide a composite stethoscope diaphragm assembly that overcomes the problem of low degree of fit of existing stethoscopes, so that it is more consistent with effective contact with the patient.

Another object of the present invention is to provide a composite stethoscope diaphragm assembly that overcomes the significant problem of audio attenuation of existing stethoscopes, which is more resistant to audio attenuation.

Another object of the present invention is to provide a composite stethoscope diaphragm assembly that overcomes the problems of existing stethoscopes that are prone to patient suffering.

Another object of the present invention is to provide a composite stethoscope diaphragm assembly that is more durable.

Another object of the present invention is to provide a composite stethoscope diaphragm assembly that accurately captures the activity information of an organ for the user to make a correct diagnostic decision.

To this end, the present invention employs one of the following technical solutions:

A composite stethoscope diaphragm assembly comprising an encapsulant portion and a diaphragm.

The encapsulant portion includes a first annulus platform and a second annulus platform, wherein the diameter of the first annulus platform is smaller than the diameter of the second annulus platform;

Providing a first annular sidewall between the first annulus platform and the second annulus platform;

Providing a second annular sidewall at an edge of the second annulus platform, the second annular sidewall extending toward a direction away from the first annulus platform;

Moreover, the diaphragm is attached to an outer end surface of the first annulus platform.

Further, a ring-shaped groove is formed on the outer end surface of the first endless belt platform, and the diaphragm is embedded in the strip-shaped groove.

Further, the outer surface of the diaphragm is at the same level as the outer surface of the axially outer end surface of the first annulus platform.

Further, the diaphragm is attached to an outer end surface of the first belt platform, and the diaphragm is The outer diameter is equal to the outer diameter of the first annulus platform.

Further, the outer diameter of the diaphragm is larger than the inner diameter of the first annulus platform.

Further, the first end of the first annular side wall is connected to the outer diameter edge of the first annular belt platform, and the second end of the first annular side wall and the second endless belt platform The inner diameter edges are connected.

Further, the vertical height H of the first annular side wall is greater than 1. 3 mm

Preferably, the first annular side wall has a vertical height H of 2 mm.

Preferably, the first annulus platform and the second annulus platform are parallel and coaxial with each other.

5毫米。 The diaphragm is a circular diaphragm having a diameter of 37. 5mm.

Preferably, at least one exhaust orifice is disposed on the diaphragm.

The beneficial effects of the invention are:

(1) In this design, the outer surface of the stethoscope diaphragm is in direct contact with the patient's body, which increases the fit of the diaphragm to the patient's body, and the audio attenuation is greatly reduced because there is no medium other than air between the diaphragm and the patient's body. , enabling the user to accurately obtain the activity information of the organ;

(2) The diaphragm diameter is controlled to about 37.5 mm, and the vertical height H of the first annular side wall is set to 2 mm, which can avoid the influence of the diaphragm deformation on the listening effect when contacting the skin surface. It has been verified by experiments that the effect is far better than the listening effect of the diaphragm with the vertical height H of the first annular side wall of the market being 1. 3 mm. Therefore, the above settings ensure a good listening effect, making it easier for the user to make the correct diagnostic decision.

DRAWINGS

1 is a front view of a composite stethoscope diaphragm assembly according to a first embodiment of the present invention; FIG. 2 is a plan view of a composite stethoscope diaphragm assembly according to a first embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION A colloid of a composite stethoscope diaphragm assembly provided by Partial schematic diagram;

4 is a schematic structural view of a composite stethoscope diaphragm assembly according to a second embodiment of the present invention;

5 is a partial schematic view showing an encapsulant of a composite stethoscope diaphragm assembly according to Embodiment 2 of the present invention;

6 is a front elevational view of a composite stethoscope diaphragm assembly provided by the prior art.

In the picture:

1. The colloidal part; 2. The first ring belt platform; 3. The second ring belt platform; 4. The diaphragm; 5. The first annular side wall; 6. The second annular side wall; 7. The strip concave groove.

detailed description

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Embodiment 1 Figure 1-3 is a schematic structural view of a composite stethoscope diaphragm assembly provided in a specific embodiment 1 of the present invention.

A composite stethoscope diaphragm assembly comprising an encapsulant portion 1 and a diaphragm 4.

5毫米。 Diaphragm 4 is a glass fiber resin sheet having a diameter of 37. 5mm. 5毫米的,是最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最最Good range to find.

The circular diaphragm is provided with at least one venting hole, and the venting hole is located at the center and the center of the circular diaphragm, and the venting hole can avoid the circular diaphragm caused by the change of the air pressure inside the stethoscope during pressing. The deformation, that is, the venting action of the ventilating orifice, maintains a constant air pressure inside the stethoscope, prevents the circular diaphragm from being deformed, and ensures that the circular diaphragm is in close contact with the patient's body, improving the accuracy of audio detection.

The encapsulant portion 1 includes a first annulus platform 2 and a second annulus platform 3. Wherein, the first ring platform The diameter of 2 is smaller than the diameter of the second annulus platform 3, and a first annular side wall 5 is disposed between the first annulus platform 2 and the second annulus platform 3, and is disposed at an edge of the second annulus platform 3 The second annular side wall 6 extends in a direction away from the first annulus platform 2. Furthermore, the first end of the first annular side wall 5 is connected to the outer diameter edge of the first annulus platform 2, and the second end of the first annular side wall 5 is connected to the inner diameter edge of the second annulus platform 3.

The diaphragm 4 is attached to the outer end surface of the first endless belt platform 2. The first ring belt platform 2, the second ring belt platform 3, the first annular side wall 5 and the second annular side wall 6 are provided with chamfers at the joints.

A first vertical height H of the annular side wall is greater than 5 1. 3mm, preferably 1. 3mm 2. 0mm ₀ is compared with the prior art, a first vertical height H of the annular side wall 5, 2 as a vertical height H 0mm facilitates the formation of the sound collection chamber, making the detected audio closer to the actual audio emitted by the patient's organs. At the same time, it also avoids the effect of diaphragm deformation on the listening effect when it comes into contact with the skin surface. The effect of the diaphragm of the first annular side wall is 1. 3mm.

The first annulus platform 2 and the second annulus platform 3 are parallel and coaxial with each other and the first annulus platform 2, the second annulus platform 3, the first annular side wall 5 and the second annular side wall 6 body forming.

The outer end surface of the first endless belt platform 1 is provided with a strip-shaped recess 7 in the upper ring, and a circular diaphragm is embedded in the strip-shaped recess 7. Wherein, the axial outer side of the first annulus platform 1 refers to the side close to the patient's body when in use, and the inner side of the strip-shaped groove in the radial direction communicates with the radially inner side of the first annulus platform 1 , the circular membrane The sheet is embedded in the strip-like recess 7, and the outer surface of the circular diaphragm is at the same level as the outer surface of the axially outer end surface of the first annulus platform 1. Therefore, when the composite stethoscope diaphragm assembly is used, the circular diaphragm is in direct contact with the patient's body, which not only improves the fit of the circular diaphragm to the patient's body, but also has no medium other than air between the patient's body. The audio attenuation is greatly reduced, which enhances the accuracy of the user's access to the organ's activity information.

Embodiment 2, FIG. 4-5 is a composite stethoscope diaphragm provided in Embodiment 2 of the present invention. Schematic diagram of the structure of the component.

5毫米。 The diameter of the diameter of 37. 5mm. The diameter of the film is 31.5 mm.

The encapsulant portion 1 includes a first annulus platform 2 and a second annulus platform 3. Wherein the diameter of the first annulus platform 2 is smaller than the diameter of the second annulus platform 3, and the first annular side wall 5 is disposed between the first annulus platform 2 and the second annulus platform 3, and the second annular belt A second annular side wall 6 is provided at the edge of the platform 3, and the second annular side wall 6 extends away from the first annulus platform 2. The first end of the first annular side wall 5 is connected to the outer diameter edge of the first annulus platform 2, and the second end of the first annular side wall 5 is connected to the inner diameter edge of the second annulus platform 3.

The sum of the vertical height H of the first annulus platform 2 and the circular diaphragm is 2. 0 mm, so that the detected audio is closer to the actual audio emitted by the patient's organ. At the same time, it also avoids the effect of diaphragm deformation on the listening effect when it comes into contact with the skin surface.

The outer diameter of the circular diaphragm is equal to the outer diameter of the first annulus platform 2, and the circular diaphragm is attached to the first annulus platform 2 to ensure direct contact of the circular diaphragm with the patient's body.

The composite stethoscope diaphragm assembly of the first embodiment and the high-elasticity variable composite diaphragm of the prior art were subjected to audio testing in conjunction with Figs.

The sound source has a decibel of 114dB and the test audio frequencies are 1000Hz, 500Hz, and 250Hz.

The encapsulant 1 has a hardness of 35 °.

2 mm _{0 The} thickness of the film is 0. 2 mm ₀

In the prior art, the size specifications of the upper cladding thickness d of the circular diaphragm are: 0.7 mm, 0.55 mm, 0. 40 mm, 0. 25mm ₀

In the first embodiment, the size of the encapsulating thickness d of the upper portion of the circular diaphragm is 0 mm, that is, there is no encapsulation on the upper portion of the circular diaphragm.

The audio test results are shown in Table 1, Table 1 is as follows:

Table 1

It can be seen from Table 1 that the attenuated audio value has a linear relationship with the thickness d of the upper portion of the circular diaphragm. The smaller the thickness d of the upper portion of the circular diaphragm, the larger the attenuation of the audio value, that is, the more the audio attenuation Small, until the thickness d of the upper part of the circular diaphragm is 0 mm, that is, when there is no encapsulation on the upper part of the circular diaphragm, the attenuated audio value is the largest, that is, the audio attenuation is the smallest, and the sound transmission effect is the best.

The invention has been described above by way of examples only, but the invention is not limited to the above-described dimensions and appearances, and should not be construed as limiting the invention. Any modifications or variations of the present invention are intended to be included within the scope of the appended claims.

Claims

claims

1. A composite stethoscope diaphragm assembly, including a colloid part (1) and a diaphragm (4), which is characterized by:

The colloid part (1) includes a first annular belt platform (2) and a second annular belt platform (3), wherein the diameter of the first annular belt platform (2) is smaller than the diameter of the second annular belt platform (3);

A first annular side wall (5) is provided between the first annular belt platform (2) and the second annular belt platform (3); a second annular side wall is provided at the edge of the second annular belt platform (3) The second annular side wall (6) extends in a direction away from the first annular platform (2);

Moreover, the diaphragm (4) is attached to the outer end surface of the first annular belt platform (2).

2. The composite stethoscope diaphragm assembly according to claim 1, characterized in that, the outer end surface of the first annular belt platform (1) is provided with a belt-shaped groove (7), and the diaphragm ( 4) Embed in the belt-shaped groove (7).

3. The composite stethoscope diaphragm assembly according to claim 1 or 2, characterized in that the outer surface of the diaphragm (4) and the outer surface of the axial outer end surface of the first annular belt platform (2) at the same level.

4. The composite stethoscope diaphragm assembly according to claim 1, characterized in that the outer diameter of the diaphragm (4) is equal to the outer diameter of the first annular belt platform (2).

5. The composite stethoscope diaphragm assembly according to claim 4, characterized in that the outer diameter of the diaphragm (4) is larger than the inner diameter of the first annular platform (2).

6. The composite stethoscope diaphragm assembly according to claim 1, characterized in that the first end of the first annular side wall (5) and the outer diameter edge of the first annular platform (2) Connected, the second end of the first annular side wall (5) is connected to the inner diameter edge of the second annular platform (3).

7. The composite stethoscope diaphragm assembly according to claim 6, characterized in that the vertical height H of the first annular side wall (5) is greater than 1.3 mm, and further, the vertical height H is 2 mm.

8. The composite stethoscope diaphragm assembly according to claim 7, characterized in that the first annular belt platform (2) and the second annular belt platform (3) are parallel and coaxial with each other.

9. The composite stethoscope diaphragm assembly according to claim 1, characterized in that the diaphragm (4) is a circular diaphragm with a diameter of 37.5mm.

10. The composite stethoscope diaphragm assembly according to claim 1 or 9, characterized in that at least one ventilation hole is provided on the diaphragm (4).