KR101635003B1 - Method of preparing esophageal stethoscope - Google Patents

Abstract

The present invention relates to an esophageal stethoscope, and more particularly, to an esophageal stethoscope which has no problem in the body and has a circular shape, and a method of manufacturing the same. A cuff having a flexible material formed at a distal end portion, a tube as an intermediate portion extending from the cuff, a connector as a front end portion coupled to the tube, and a temperature sensor connected to the connector. The flexible material cuff, the tube and the connector are electrically connected, and the cuff as the end portion is made of a silicone-containing material. The esophageal stethoscope according to the present invention is harmless to the body even if it is exposed for a long time. Further, the esophageal stethoscope according to the present invention is harmless to the body even if it is exposed for a long time with a cuff portion formed as thin as possible even without bubbles.

Description

METHOD OF PREPARING ESOPHAGEAL STETHOSCOPE BACKGROUND OF THE INVENTION [0001]

The present invention relates to an esophageal stethoscope, and more particularly, to an esophageal stethoscope which has no problem in the body and has a circular shape, and a method of manufacturing the same.

In anesthesiology, stethoscaling heart and breath sounds provides vital information by providing information related to the patient's heart and breathing. Esophageal stethoscope (esophageal stethoscope) is a stethoscope used in the anesthesia, especially in the esophagus by inserting a catheter, heart and breathing sound is a medical device to stethoscope. Such an esophageal stethoscope is very useful because it is inexpensive, easy to use, and can detect heart sounds, respiratory sounds, and deep body temperature. Furthermore, a temperature sensor is provided for accurately measuring the body temperature of the patient.

Such an esophagus stethoscope includes a cuff 10 of flexible material formed at the distal end as exemplarily shown in Figure 1, a tube 20 as an intermediate portion extending from the cuff 10, A connector 30 as a front end portion coupled to the connector 30 and a temperature sensor 40 connected to the connector 30.

A commonly used esophageal stethoscope comprises a cuff portion formed of a polyvinyl chloride (PVC) compound, a tube portion of a PVC material formed from the cuff portion, and a connector portion formed of an ABS material.

However, the cuff portion of PVC and the tube portion of PVC are decomposed on long-term exposure to produce harmful plasticizer components. That is, if the esophageal stethoscope is exposed for a long period of time without using it immediately, the toxicity due to the plasticizer is a problem.

Korean Utility Model Registration No. 20-0215363 (registered on December 19, 2000, entitled "Esophageal Stethoscope")

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide an esophageal stethoscope harmless to the body even when exposed for a long time.

Another object of the present invention is to provide an esophagus stethoscope which is harmless to the body even if it has a cuff portion formed as thin as possible even without air bubbles for a long time, for example.

Another object of the present invention is to provide an esophageal stethoscope which is free from toxicity due to residues even when produced in large quantities.

In order to achieve the above and other objects,

A cuff having a flexible material formed at a distal end portion, a tube as an intermediate portion extending from the cuff, a connector as a front end portion coupled to the tube, and a temperature sensor connected to the connector, Wherein the flexible cuff, the tube and the connector are electrically connected, and the cuff as the distal portion is made of a silicone-containing material.

delete

In the present invention,

(a) immersing a mold in a liquid mixture of distilled water or a non-toxic life-enhancing detergent without a toxic mold release agent, washing it firstly with distilled water or water;

(b) drying the washed mold through the step (a) at a temperature of 100 ° C to 120 ° C for 2 to 5 minutes, followed by cooling;

(c) combining the silicon-containing raw material with a blue pigment and a diluent before, after or simultaneously with the step;

(d) maintaining the raw material blended in the step (c) at a pressure of 50 to 70 mmHg for 20 to 30 minutes to remove air bubbles;

(e) dipping the molding material in the mixing raw material from the step (d) and naturally drying it in an upside-down state for 10 to 30 minutes;

(f) drying the mold from step (e) at a temperature of 120 to 140 DEG C for 20 minutes to 40 minutes; And

(g) separating the resulting cuff from the dried mold from step (f) and then curing at a temperature of from 170 DEG C to 190 DEG C for from 80 minutes to 120 minutes.

The silicon-containing raw material used in step (c) is characterized by having a hardness of 20 to 30 A or 20 to 30 B.

The silicon-containing raw material used in the step (c) is characterized by being a homogeneous mixture of a raw material having a hardness of 20 to 30 A and a hardness of 20 to 30 B as raw materials.

And the thickness of the cuff manufactured from the steps (a) to (g) is 0.3 mm or less.

The esophageal stethoscope according to the present invention is harmless to the body even if it is exposed for a long time. Further, the esophageal stethoscope according to the present invention is harmless to the body even if it is exposed for a long time with a cuff portion formed as thin as possible even without bubbles.

Figure 1 is a photograph of an esophageal stethoscope having a basic configuration.
2 to 5 are views sequentially showing steps of manufacturing a tough applied to the esophageal stethoscope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail with reference to the following illustrative drawings. In describing the present invention, a description of known functions or configurations will be omitted for the sake of clarity of the present invention. In addition, like reference numerals designate like elements throughout the specification.

The term "variant" as used herein refers to the process of separating a particular product from a mold or forming mold containing the polymerized product or apparatus.

As used herein, the term " diluent " refers to a non-reactive, extractable material that is added to the polymerization mixture or the prepolymerized mixture.

Referring to FIG. 1, an esophagus stethoscope according to a preferred embodiment of the present invention includes a cuff 10 of a flexible material formed at a distal end portion, a tube 20 as an intermediate portion extending from the cuff, And a connector 30 as a front end portion coupled to the tube 20 and a temperature sensor 40 connected to the connector 30. [

The flexible cuff 10, the tube 20 and the connector are electrically connected. At this time, the cuff 10, particularly as the end portion, is made of a silicon-containing material.

The cuff 10 as the distal portion undergoes an expansion or contraction function to assist in secure fixation within the body's esophagus as needed.

To this end, the cuff 10 must be made of a flexible material, and a silicon-containing material is adopted as the flexible material. At this time, the cuff 10 has a thickness of 0.3 mm or less for smooth expansion.

Since the cuff 10 having a thickness of 0.3 mm or less is basically formed thin, there is no problem of bubble formation and tearing at the time of product formation, and it is not easy to eliminate such a problem in fact. That is, not only is the cuff 10 formed to have a uniform thickness at the time of forming the cuff 10, but the cuff 10 is not easily removed when the cuff 10 is pulled out from the mold, and bubbles are generated at the moment.

In order to eliminate such a problem, the present invention applies a similar but different method to the existing method, and application of such method is another important point of the present invention.

Hereinafter, a method of manufacturing the cuff 10 having a uniform thickness of 0.3 mm or less, but without the problem of tearing as well as generation of bubbles will be described.

First, distilled water or water as a mold jig cleansing agent and household detergent are mixed at a weight ratio of about 7: 3, and then the mold is immersed. The mold is then rinsed with distilled water or water secondarily, then dried at a temperature of 110 ± 10 ° C for 2 to 5 minutes and then allowed to cool.

The mold jig cleaner disclosed herein improves or facilitates the separation of tough from the mold. If a commonly used release agent is used, it will not be biocompatible, and the final release cuff will be affected by the residual release agent.

Before or after the previous step, the silicon-containing raw material, the blue pigment and the diluent are mixed in a raw material container such as a mixer for 30 minutes while gradually increasing the speed.

Herein, the term "silicon-containing component" means a component containing at least one [-Si-O-Si] bond in a monomer, a macromer or prepolymer (for example, a silicon-containing compound such as -SiR ₁ R ₂ O- Which may contain one or more organic radical substituents (R ₁ , R ₂ ) or substituted organic radical substituents which may be the same or different. As a specific embodiment, LSI-200 / 20A and / or LSI-200 / 20B (manufactured by Shanghai Silicon Co., Ltd.) is used particularly in the embodiment of the present invention. Here, 20A and 20B represent hardness. In the present invention, a hardness of 20 to 30 A or 20 to 30 B is suitable.

Blue pigments are used to increase the discrimination of medical instruments or devices intended for in-vivo imaging using medical devices, and such blue pigments are well known in the art.

The diluent refers to a non-reactive, extractable material that is added to the polymerization mixture or the prepolymerized mixture. The introduction of a non-reactive hydroxyl, ether, ketone, amide or C ₁ -C ₂₀ alcohol-containing liquid diluent into the polymerization mixture reduces the force required to release the polar resin mold and allows a high percentage of complete moldings to be obtained after deblocking ≪ / RTI > The diluent may subsequently be substantially extracted from the polymerized product. As understood from the disclosure herein, the diluent composition may comprise one or more diluents. For example, the diluent composition may comprise only a single diluent, or may comprise only two diluents, or may comprise more than two diluents, for example, 3, 4, 5, 6 or more, combinations of different diluents can do. Thus, certain embodiments of the inventive device, such as a pre-extracted device, may include a diluent composition. In at least one embodiment, the diluent composition comprises at least one compound selected from the group consisting of ether-alcohols, ethers, keto-alcohols, esters, ketones, amides, nitriles and C ₁ -C ₂₀ alcohols (e.g., 1,2,3,4,5,6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20 carbon containing alcohols. In one or more embodiments, the diluent composition comprises a C1-C10 alcohol. For example, the diluent may be selected from the group consisting of hydroxymethylpentanone (HMP), 1,4-dioxane, acetonitrile, tetrahydrofuran (THF), ethyl acetate, 2-ethoxyethanol, ), Isopropanol (IPA), and decyl alcohol, and any combination thereof. In another example, the diluent is selected from the group consisting of hydroxymethylpentanone and N, N-dimethylformamide, and combinations thereof.

In particular, nitrile may be used as a diluent in the present invention. In the present invention, RTV-THINNER (Shin-Etsu) may be suitably used as a diluent. In the present invention, a diluent mixed with nitrile and RTV-THINNER (Shin-Etsu) may be used.

After the compounded raw material is maintained under a pressure of 50 to 70 mmHg, when a certain indicated value is reached, the vacuum state is maintained for 30 minutes to completely remove the bubbles.

Then, as shown in FIG. 3, the forming die is fixed to the hydraulic press, and the forming die is dipped in the mixed raw material and placed upside down on the paper. In this case, the time required for the natural drying time is 10 to 30 minutes.

Thereafter, the naturally dried mold is dried at a temperature of 120 to 140 캜 for about 25 to 35 minutes.

As shown in FIGS. 4 and 5, the cuff manufactured in this manner can be manufactured to be thin without bubbles, so that a desired function can be exhibited when applied in the body, and there is no fear of toxicity by the plasticizer even if exposed for a long time.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that it is possible.

10: cuff
20: tube
30: Connector
40 Temperature sensor

Claims (5)

A cuff 10 of a flexible material formed at a distal end portion of the cuff 10 and a tube 20 serving as an intermediate portion extending from the cuff 10 and a connector 30 as a front end portion coupled to the tube 20, And a temperature sensor (40) connected to the connector (30), wherein the flexible cuff (10), the tube (20) and the connector (30) are electrically connected, The cuff 10 as a part is a method for manufacturing an esophageal stethoscope made of a silicone-containing material,
The cuff (10)
A thickness of 0.3 mm or less,
(a) immersing a mold in a liquid mixture of distilled water or a non-toxic life-enhancing detergent without a toxic mold release agent, washing it firstly with distilled water or water;
(b) drying the washed mold through the step (a) at a temperature of 100 ° C to 120 ° C for 2 to 5 minutes, followed by cooling;
(c) combining the silicon-containing raw material with a blue pigment and a diluent before, after or simultaneously with the step;
(d) maintaining the raw material blended in the step (c) at a pressure of 50 to 70 mmHg for 20 to 30 minutes to remove air bubbles;
(e) dipping the molding material in the mixing raw material from the step (d) and naturally drying it in an upside-down state for 10 to 30 minutes;
(f) drying the mold from step (e) at a temperature of 120 to 140 DEG C for 20 minutes to 40 minutes; And
(g) separating the cuff produced from the dried forming mold from step (f) and curing at a temperature of 170 캜 to 190 캜 for 80 minutes to 120 minutes. ≪ / RTI > delete The method according to claim 1,
Wherein the silicon-containing feedstock used in step (c) has a hardness of 20 to 30 A or 20 to 30 B. < RTI ID = 0.0 > 15. < / RTI > The method of claim 3,
Wherein the silicon-containing raw material used in step (c) is a homogeneous mixture of a raw material having a hardness of 20 to 30 A and a hardness of 20 to 30 B as raw materials. delete

Images