CN111840740A - Respiratory tube - Google Patents
Respiratory tube Download PDFInfo
- Publication number
- CN111840740A CN111840740A CN202010854398.0A CN202010854398A CN111840740A CN 111840740 A CN111840740 A CN 111840740A CN 202010854398 A CN202010854398 A CN 202010854398A CN 111840740 A CN111840740 A CN 111840740A
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- Prior art keywords
- breathing
- parts
- tube according
- breathing tube
- silicone rubber
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- 230000000241 respiratory effect Effects 0.000 title abstract description 6
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 37
- 239000000463 material Substances 0.000 abstract description 10
- 210000005069 ears Anatomy 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 20
- 229920002379 silicone rubber Polymers 0.000 description 17
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 15
- -1 vinyl siloxane Chemical class 0.000 description 15
- 239000012763 reinforcing filler Substances 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 229920002554 vinyl polymer Polymers 0.000 description 8
- 239000005977 Ethylene Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 4
- 229910021485 fumed silica Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 102100023170 Nuclear receptor subfamily 1 group D member 1 Human genes 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0666—Nasal cannulas or tubing
- A61M16/0672—Nasal cannula assemblies for oxygen therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0605—Means for improving the adaptation of the mask to the patient
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Otolaryngology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A respiratory tube relates to medical equipment and facilities, and comprises two groups of side ears and a group of connecting devices, wherein the left end and the right end of each connecting device are respectively connected with one group of side ears; meanwhile, the breathing tube made of new materials and a new process is adopted, and the breathing tube is attractive in appearance, soft in material and high in toughness, so that the breathing tube is comfortable to wear and not easy to damage.
Description
Technical Field
The invention relates to medical equipment and facilities, in particular to a breathing tube.
Background
The breathing tube is the necessary part of connecting on the breathing machine, and both breathing tubes and breathing machine can form the effect of assisted respiration after cooperating, especially have magical effect to sick or sick and dangerous patient, but the effect of assisted respiration can be solved to current breathing tube, and current breathing tube has following shortcoming: 1. the breathing tube is fixed only by the position of the nostril, and the fixing mode has the risk of falling off and is easy to damage the nose after being fixed for a long time; 2. the existing breathing tube is made of plastic, the softness, hardness, attractiveness and use effect of the material cannot meet the use standard, discomfort can be caused in the use process, and inconvenience can be brought to use.
Disclosure of Invention
The invention provides a vagina contracting ball, aiming at solving the problems in the background technology, the technical problems solved by the invention are realized by adopting the following technical scheme: a breathing tube comprises two sets of lugs and a set of connecting device, wherein the left end and the right end of the connecting device are respectively connected with a set of lugs.
The connecting device comprises a connecting pipe and two breathing devices, the left end and the right end of the connecting pipe are respectively connected with a group of side lugs, the connecting pipe is connected with the two breathing devices, and the two breathing devices are in an axisymmetric structure relative to the connecting pipe.
The breathing device comprises a nose seat, a suction tube and a breathing port, one end of the suction tube is connected with the connecting tube, the other end of the suction tube is provided with the nose seat, and the breathing port is arranged in the suction tube.
The side ear include fixed pipe, connector, otic placode and bulkhead, fixed pipe one end be connected with connecting pipe one end among the connecting device, fixed intraduct is equipped with the connector, fixed pipe is located otic placode side, otic placode another side is equipped with the bulkhead.
The edge lugs and the connecting device are both made of liquid silicon rubber.
The liquid silicone rubber consists of polymethyl vinyl siloxane, reinforcing filler and hexamethyldisilazane; the liquid silicone rubber comprises, by weight, 100-300 parts of polymethyl vinyl siloxane, 20-40 parts of reinforcing filler and 0-40 parts of hexamethyldisilazane.
The viscosity of the polymethyl ethylene siloxane is 1-20 ten thousand mPa.s under the condition of 25 ℃, and the ethylene group content of the polymethyl ethylene siloxane is 0.05-5.0% mol/mol.
The reinforcing filler has a specific surface area of 150-380M2(ii) one or a mixture of two of fumed silica or precipitated silica per gram.
The preparation method of the liquid silicone rubber comprises the following steps:
step one, sequentially putting 100 parts by mass of polymethyl vinyl siloxane with viscosity of 1-20 ten thousand mPa.s and vinyl content of 0.05-5.0% mol/mol at 25 ℃, 20-40 parts by mass of reinforcing filler with specific surface area of 150-380M2/g and 0-40 parts by mass of hexamethyldisilazane into a kneader and mixing;
step two, after the mixture is mixed in the step one, the temperature is raised to 120-150 ℃, and the mixture is heated and mixed for 1-3 hours under the condition of 120-150 ℃;
step three, after the heating and mixing in the step two, vacuumizing for 1-3 hours while mixing;
step four, after the three sides are mixed and vacuumized, discharging and cooling are carried out to obtain liquid silicone rubber base rubber;
and step five, obtaining an extruded rubber material through the step four, and grinding for 1-3 times at a distance of 1-5mm by using a three-roll grinder to obtain the liquid silicone rubber.
The invention has the beneficial effects that: the breathing tube is additionally provided with the two edge ears, the face can be tightly attached through the two edge ears, meanwhile, the attaching effect can be better through the partition frame, the pressure of the nose can be relieved through the assistance of the edge ears, the breathing tube can be prevented from falling off, and the safety and the stability can be ensured; meanwhile, the breathing tube made of new materials and a new process is adopted, and the breathing tube is attractive in appearance, soft in material and high in toughness, so that the breathing tube is comfortable to wear and not easy to damage.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a perspective view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A breathing tube comprises two sets of lugs 1 and a set of connecting device, wherein the left end and the right end of the connecting device are respectively connected with one set of lugs 1. The connecting device comprises a connecting pipe 2 and two breathing devices, the left end and the right end of the connecting pipe 2 are respectively connected with a group of side ears 1, the connecting pipe 2 is connected with the two breathing devices, and the two breathing devices are in an axisymmetric structure relative to the connecting pipe 2. The breathing device comprises a nose seat 301, a suction pipe 302 and a breathing port 303, wherein one end of the suction pipe 302 is connected with the connecting pipe 2, the other end of the suction pipe 302 is provided with the nose seat 301, and the breathing port 303 is arranged inside the suction pipe 302. The side ear 1 comprises a fixed tube 101, a connector 102, an ear plate 103 and a partition frame 104, one end of the fixed tube 101 is connected with one end of a connecting tube 2 in the connecting device, the connector 102 is arranged in the fixed tube 101, the fixed tube 101 is positioned on one side surface of the ear plate 103, and the partition frame 104 is arranged on the other side surface of the ear plate 103. The edge ears 1 and the connecting device are both made of liquid silicon rubber.
In the use process, be connected connector 102 in the limit ear 1 with the takeover of breathing machine, then hug closely the border position of bulkhead 104 with the face, ear plate 103 also can be in the same place and paste at the face this moment, there is a bit contact between face and the ear plate this moment, the surplus has the clearance, can realize the effect of vacuum this moment, make face and ear plate can not hug closely together, insert inside the nostril with nose seat 301 among the respiratory device simultaneously, it is fixed with the nostril through straw 302, simultaneously through vacuum effect, can make both hug closely.
Two limit ears have been increased on this respiratory tube, can closely laminate face through two limit ears, can also make the effect of laminating better through the bulkhead simultaneously, through the assistance of limit ear, not only can alleviate the pressure of nose, can also ensure that respiratory tube can not drop, can ensure safety and stability.
Example one
The liquid silicone rubber consists of polymethyl vinyl siloxane, reinforcing filler and hexamethyldisilazane; the weight of each component of the liquid silicone rubberThe weight portions are 100 portions of polymethyl vinyl siloxane, 20 portions of reinforcing filler and 5 portions of hexamethyldisilazane. The viscosity of the polymethylehilkylsiloxane is 15 ten thousand mPa.s under the condition of 25 ℃, and the content of an ethenyl group is 3% mol/mol. The reinforcing filler has a specific surface area of 2000M2(ii) one or a mixture of two of fumed silica or precipitated silica per gram.
Example two
The liquid silicone rubber consists of polymethyl vinyl siloxane, reinforcing filler and hexamethyldisilazane; the liquid silicone rubber comprises, by weight, 150 parts of polymethylethylsiloxane, 30 parts of a reinforcing filler and 20 parts of hexamethyldisilazane. The viscosity of the polymethyl ethylene siloxane at 25 ℃ is 10 ten thousand mPa.s, and the ethylene content of the polymethyl ethylene siloxane is 3.0% mol/mol. The reinforcing filler has a specific surface area of 200M2(ii) one or a mixture of two of fumed silica or precipitated silica per gram.
EXAMPLE III
The liquid silicone rubber consists of polymethyl vinyl siloxane, reinforcing filler and hexamethyldisilazane; the liquid silicone rubber comprises, by weight, 300 parts of polymethylethylsiloxane, 40 parts of a reinforcing filler and 40 parts of hexamethyldisilazane. The viscosity of the polymethyl ethylene siloxane at 25 ℃ is 20 ten thousand mPa.s, and the ethylene content is 5.0% mol/mol. The reinforcing filler has a specific surface area of 380M2(ii) one or a mixture of two of fumed silica or precipitated silica per gram.
The above three groups of examples were prepared by the following method:
the preparation method of the liquid silicone rubber comprises the following steps:
step one, 100 parts by mass of polymethylehilkylsiloxane with viscosity of 10 ten thousand mPa.s and ethyl vinyl content of 5.0% mol/mol at 25 ℃, 40 parts by mass of polymethylehilkylsiloxane with specific surface area of 380M2(ii)/g of a reinforcing filler and 40 parts by mass of hexamethyldisilazane were put into a kneader and mixed;
step two, after the mixture is mixed in the step one, heating to 130 ℃, and heating and mixing for 2 hours at the temperature of 130 ℃;
step three, after the heating and mixing in the step two, vacuumizing for 3 hours while mixing;
step four, after the three sides are mixed and vacuumized, discharging and cooling are carried out to obtain liquid silicone rubber base rubber;
and step five, obtaining an extruded rubber material through the step four, and grinding for 3 times at a distance of 5mm by using a three-roller grinder to obtain the liquid silicone rubber.
In the above example, by examining the effect of 100 patients on the breathing tube made of the liquid silicone rubber, the scoring criteria of the test items are as follows: the score of 5 is very satisfactory, the score of 4 is satisfactory, the score of 3 is general, the score of 2 is unsatisfactory, and the score of 1 is very unsatisfactory. Wherein the common group is a breathing tube made of medical material.
| Test items | Example one | Example two | EXAMPLE III | General group |
| Comfort of material | 4.9 | 4.6 | 4.7 | 3.0 |
| Softness | 4.9 | 4.7 | 5.0 | 1.0 |
| Aesthetic effect | 4.9 | 4.6 | 4.8 | 1.0 |
| Toughness of | 4.9 | 4.7 | 4.6 | 1.2 |
| Strength of | 4.9 | 4.6 | 4.7 | 1.0 |
The breathing tube made of the liquid silicone rubber can be obtained through the data, has the characteristics of comfort, softness, strong toughness and high strength, is attractive in appearance after being made into a product, and can ensure the safety of a user because the material is a non-toxic material.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A breathing tube, characterized by: the respiratory tube consists of two groups of side ears and a group of connecting device, wherein the left end and the right end of the connecting device are respectively connected with a group of side ears.
2. A breathing tube according to claim 1, wherein: the connecting device comprises a connecting pipe and two breathing devices, the left end and the right end of the connecting pipe are respectively connected with a group of side lugs, the connecting pipe is connected with the two breathing devices, and the two breathing devices are in an axisymmetric structure relative to the connecting pipe.
3. A breathing tube according to claim 2, wherein: the breathing device comprises a nose seat, a suction tube and a breathing port, one end of the suction tube is connected with the connecting tube, the other end of the suction tube is provided with the nose seat, and the breathing port is arranged in the suction tube.
4. A breathing tube according to claim 1, wherein: the side ear include fixed pipe, connector, otic placode and bulkhead, fixed pipe one end be connected with connecting pipe one end among the connecting device, fixed intraduct is equipped with the connector, fixed pipe is located otic placode side, otic placode another side is equipped with the bulkhead.
5. A breathing tube according to claim 1, wherein: the edge lugs and the connecting device are both made of liquid silicon rubber.
6. A breathing tube according to claim 5, wherein: the liquid silicone rubber consists of polymethyl vinyl siloxane, reinforcing filler and hexamethyldisilazane; the liquid silicone rubber comprises, by weight, 100-300 parts of polymethyl vinyl siloxane, 20-40 parts of reinforcing filler and 0-40 parts of hexamethyldisilazane.
7. A breathing tube according to claim 6, wherein: the viscosity of the polymethyl ethylene siloxane is 1-20 ten thousand mPa.s under the condition of 25 ℃, and the ethylene group content of the polymethyl ethylene siloxane is 0.05-5.0% mol/mol.
8. A breathing tube according to claim 6, wherein: the reinforcing filler has a specific surface area of 150-380M2(ii) one or a mixture of two of fumed silica or precipitated silica per gram.
9. A breathing tube according to claim 6, wherein: the preparation method of the liquid silicone rubber comprises the following steps:
step one, sequentially putting 100 parts by mass of polymethyl vinyl siloxane with viscosity of 1-20 ten thousand mPa.s and vinyl content of 0.05-5.0% mol/mol at 25 ℃, 20-40 parts by mass of reinforcing filler with specific surface area of 150-380M2/g and 0-40 parts by mass of hexamethyldisilazane into a kneader and mixing;
step two, after the mixture is mixed in the step one, the temperature is raised to 120-150 ℃, and the mixture is heated and mixed for 1-3 hours under the condition of 120-150 ℃;
step three, after the heating and mixing in the step two, vacuumizing for 1-3 hours while mixing;
step four, after the three sides are mixed and vacuumized, discharging and cooling are carried out to obtain liquid silicone rubber base rubber;
and step five, obtaining an extruded rubber material through the step four, and grinding for 1-3 times at a distance of 1-5mm by using a three-roll grinder to obtain the liquid silicone rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854398.0A CN111840740A (en) | 2020-08-21 | 2020-08-21 | Respiratory tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854398.0A CN111840740A (en) | 2020-08-21 | 2020-08-21 | Respiratory tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111840740A true CN111840740A (en) | 2020-10-30 |
Family
ID=72970526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010854398.0A Pending CN111840740A (en) | 2020-08-21 | 2020-08-21 | Respiratory tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111840740A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110247627A1 (en) * | 2008-11-27 | 2011-10-13 | Teijin Pharma Limited | Wearing tool for breathing mask, and breathing mask |
| CN103131192A (en) * | 2013-03-26 | 2013-06-05 | 东莞中硅新材料科技有限公司 | Liquid silicone rubber base rubber material and its preparation method and silicone coating using the rubber material and its preparation method |
| TW201323027A (en) * | 2011-12-05 | 2013-06-16 | Apex Medical Corp | Respiratory therapy mask |
| CN103249448A (en) * | 2010-10-18 | 2013-08-14 | 费雪派克医疗保健有限公司 | A nasal cannula, conduit and securement system |
| CN109906097A (en) * | 2016-08-31 | 2019-06-18 | 费雪派克医疗保健有限公司 | Patient interface, system and method |
-
2020
- 2020-08-21 CN CN202010854398.0A patent/CN111840740A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110247627A1 (en) * | 2008-11-27 | 2011-10-13 | Teijin Pharma Limited | Wearing tool for breathing mask, and breathing mask |
| CN103249448A (en) * | 2010-10-18 | 2013-08-14 | 费雪派克医疗保健有限公司 | A nasal cannula, conduit and securement system |
| TW201323027A (en) * | 2011-12-05 | 2013-06-16 | Apex Medical Corp | Respiratory therapy mask |
| CN103131192A (en) * | 2013-03-26 | 2013-06-05 | 东莞中硅新材料科技有限公司 | Liquid silicone rubber base rubber material and its preparation method and silicone coating using the rubber material and its preparation method |
| CN109906097A (en) * | 2016-08-31 | 2019-06-18 | 费雪派克医疗保健有限公司 | Patient interface, system and method |
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