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
• • 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
  • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
  • A61M16/0816—Joints or connectors
  • A61M16/0833—T- or Y-type connectors, e.g. Y-piece
• • 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
  • A61M16/10—Preparation of respiratory gases or vapours
  • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
  • A61M16/1095—Preparation of respiratory gases or vapours by influencing the temperature in the connecting tubes
• • 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
  • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
  • A61M16/0808—Condensation traps
• • 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
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/33—Controlling, regulating or measuring
  • A61M2205/3368—Temperature
  • A61M2205/3372—Temperature compensation
• • 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
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/36—General characteristics of the apparatus related to heating or cooling
  • A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
• • 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
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/42—Reducing noise

Definitions

• the invention relates to the technical field of goggles according to the preamble of claim 1, of nose pieces therefor according to the preambles of claims 12 to 15, of Y-pieces according to the preamble of claim 16 and of methods according to the preamble of claim 19.
• the invention relates to design changes that facilitate the use of air goggles in the pneumatic upper airway splinting.
• CPAP continuous positive airway pressure
• CPAP therapy In CPAP therapy, a patient is given a constant positive pressure via a nasal mask to appear in the upper airway. If the overpressure is properly selected, it will ensure that the upper airways remain fully open throughout the night, preventing obstructive respiratory disorders. Among other things, to improve comfort BiLevel devices were developed, which lower the pressure during the breather. As generic term for devices for the pneumatic splinting of the upper respiratory tract the term PAP devices is used here.
• Snoring and apneas may have the same cause, namely flabby palate and tongue tissue.
• Oxygen glasses for oxygen treatment are also known from the prior art. With the oxygen goggles, the patient is air with an increased oxygen partial pressure (> 210 mbar) or pure oxygen in the Nose applied.
• oxygen treatment occurs in acute or chronic hypoxemia due to respiratory or cardiovascular disorder (myocardial infarction, shock) or certain poisoning, for example, carbon monoxide, carbon dioxide, fluorescent gas or smoke.
• WO 02/062413 A2 discloses the use of oxygen spectacles in an anti-snoring device. Oxygen goggles are referred to in this context as air goggles.
• Vapotherm 200Oi is a humidification system that delivers air flows in the range of 8 to 40 l / min via nasal cannula to patients.
• the extracted air is humidified and heated.
• Air can be enriched with oxygen.
• the heating of a forked tube by means of a heating wire can prevent the compensation of moisture in the forked tube.
• a laying of the heating wire inside the fork tube is easy to manufacture. Due to the heat dissipation to the environment of the fork tube, the temperature in the fork tube drops approximately linearly with the distance from the compressor. This temperature drop can be compensated by a constant heat output per unit length, as they just created a heating wire. Due to the construction of the hose, the required heat output for the entire air-rollover can be kept below 15 watts. Otherwise, due to legal requirements, the use of fire-retardant plastics would be required, which are generally not biocompatible and whose use is therefore problematic in medical devices.
• a measurement of the temperature of the applied air makes it possible to control the heat output of a heating wire or a heater in a compressor housing in such a way that that the temperature is perceived by the user as pleasant. Without compensation for the temperature drop in the forked tube, the application openings in the tines would be the coldest places. Consequently, air humidity will most likely condense here. For this reason, a heat output control, due to a temperature measurement near the application ports, is best suited to prevent condensation in the entire goggle.
• a triangular cross-section of the elevations advantageously ensures that the contact area between the insulation of the heating wire and the inside of the fork tube remains small both in normal operation and when bent.
• the overall star-shaped cross-section of the insulation advantageously increases the surface of the insulation and thus provides for a reduction of the thermal resistance between the insulation and the passing air.
• Also extending in the longitudinal direction of the fork tube projections provide in an advantageous manner that even then sufficient air flow is ensured inter alia for cooling the heating wire, if the fork tube kinks.
• Stabilization threads serve to reduce a longitudinal expansion of the tubes.
• the mechanical connection of two pieces of the fork tube at its plug-side end makes it possible to save a Y-piece or to integrate this into the plug. This advantageously leads to a reduction of the acoustic emission because the Y-piece integrated in the plug is further away from the application openings.
• Inner radius stages at different connection points can just compensate for the hose thickness, so that after attachment of a hose, the transition between the hose and the corresponding component is smooth. A smooth transition creates less vortex and therefore less noise.
• transition areas between a tine and the central connector and a tine and the connector on the side of the tine are rounded to prevent vortex formation and thus a noise emission in an advantageous manner.
• an optimal flow resistance of the connector can be adjusted.
• FIG. 1 shows a goggle according to the invention with a first embodiment of a nosepiece
• FIG. 2 shows a Y-piece with a temperature sensor
• FIG. 3 shows a goggle according to the invention with a double lumen tube
• FIG. 5 shows the cross section of a heating wire.
• FIG. 6 shows the cross section of a hose with heating wire.
• FIG. 7 is a perspective view of a second embodiment of a
• FIG. 8 shows a section through a prong along ZZ.
• 9 is a perspective view of the second embodiment of the nosepiece from a second direction;
• Fig. 10 is a section along M-M
• Fig. 11 is a perspective view of the second embodiment of the nosepiece from a third direction.
• Fig. 12 is a Y-piece for a goggle according to the invention.
• Fig. 1 shows an inventive goggles 1 with a first embodiment of a nose piece 2.
• Nose piece 2 is supplied via a fork hose 3, a Y-piece 4, a supply hose 5, and a plug 6 with compressed air.
• Nose piece 2 has two prongs 12 for the application of air in the two nostrils of a user.
• Inner radius stages 16 compensate for the difference between the inner and outer radius of the fork tubes and thus prevent sudden changes in the cross section of the airways.
• Plug 6 has a pneumatic connector part 10, an electrical connector part 9 and a bracket 11. From the electrical connector part 9 performs a heating wire 8 through supply hose 5, Y-piece 4, the right piece of fork hose 3, the right part of the nose piece 2 to a temperature sensor 7 and from there through the left part of the nose piece 2, the left piece of forked hose 3, Y-piece 4 and supply hose 5 to the electrical connector part 9 back.
• Feed hose 5 has a larger cross-section than fork hose 3, because feed hose 5 typically has to transport twice the air flow, the distance to be bridged is greater and the loss of comfort with a large hose thickness is lower.
• the word forked hose was chosen only because supply hose 5 "aufgabelt" at Y-piece 4.
• heating wire 8 runs in the area of nose piece 2 in an additional lumen 17th
• the component 7 can be a temperature switch 19, which can be understood as a temperature sensor with a poor resolution of one bit.
• the temperature switch can be realized for example by a bimetallic contact, for example, with a triggering temperature in the range of 30 0 C to 50 0 C, in particular of 40 0 C. If the temperature of the temperature switch exceeds the trip temperature, the heating circuit is interrupted.
• a temperature sensor or switch 19 may be accommodated in the Y-piece 4, as shown in FIG.
• An additional temperature switch for example a bimetallic contact with a triggering temperature of (50 ⁇ 10) ° C, can represent a further safeguard against overheating, for example if the delivery hose 3 and / or the supply hose 5 are bent accidentally. Above the trip temperature, the heating circuit is interrupted.
• the temperature switch 19 shown in FIG. 2 represents a schematic bimetallic contact.
• a temperature sensor or switch 19 alone can effectively prevent condensation since the Y-piece does not end the supply hose 5 heated by the patient's body. Insofar is located in the supply hose 5 of the coldest and thus most susceptible to condensation point between the compressor and nose piece 2. Is the Temperature of the coldest point held above the dew point, no condensation takes place. A displacement of the temperature sensor or switch in the Y-piece 4 can increase the wearing comfort of the air rims 1, because the nose piece 2 can be made lighter and smaller.
• approximately the air temperature in the prongs 12 can be calculated from the temperature in the Y-piece, the heating power and the set flow, a displacement of the temperature sensor from the nosepiece 2 into the Y-piece Piece 4 to no significant loss of comfort.
• FIG. 3 shows a second embodiment of a pair of air goggles in which supply hose 5 and Y-piece 4 are replaced by a double-lumen hose 13.
• the double lumen tube consists of two forked tube pieces, which are mechanically connected to each other.
• the Y-piece 4 is omitted or is integrated according to another view in the connector 6.
• a clamp 14 may be provided which prevents further splicing of the double lumen tube.
• the division of an air flow on two forked tube pieces can be done in the plug 6 and is thus further away from the tines 12, so that the noise emission is lower.
• Fig. 4 shows a way to read a temperature sensor over only two heating wires.
• the two heating wires 8 are represented in the equivalent circuit shown in Figure 4 by the two resistors RH.
• R ⁇ represents a two-terminal with temperature-dependent terminal behavior.
• the resistor R ⁇ is only a temperature-dependent resistor such as a PtIOO or PtIOOO.
• R T is big compared to R H.
• the heating wires typically have a resistance of 15 ⁇ with large ones
• Heating voltage UH applied the temperature sensor is short-circuited by the parallel diode D, so that essentially only the heating wires are heated. If a negative or a small measuring voltage U M is applied to the three series-connected resistors, then the majority of the
• Example in the form of the integrated circuit AD592 is present as two-pole R ⁇ use.
• the diode D serves to provide the integrated circuit for the
• the direction of the measuring current is directed counter to the heating current. Its amount depends on the temperature and the integrated circuit used and is a few 100 ⁇ A.
• the special advantage of this solution is that the
• the conversion of the temperature signal by modulating on the heating current is possible. This can be done both analog and digital and realized in customer-specific circuits. Such circuits are known, for example, from telephones or baby monitors for modulating audio frequency signals to the operating voltage.
• the polarity or magnitude of the applied voltage can be switched much faster than the thermal inertia of the system, so that the switching between the heating voltage U H and measurement voltage U M has virtually no temperature change.
• a metal wire 21 is embedded in an insulation 22.
• the insulation has a star-shaped cross section with five triangular rays and is therefore invariant with respect to rotations by 72 °.
• the metal wire 21 may have a star-shaped cross-section. Each ray forms an elevation running along the wire.
• the bumps can also run helically around the lateral surface, wherein the length of a circulation is typically a multiple of the extent of the insulation.
• the purpose of the star-shaped insulation is to increase the surface area of the wire and thus reduce the thermal resistance to the surrounding air. In addition, even when kinked hose of the heating wire should be circulated as possible on all sides of air, not to overheat and melt into the surrounding tube.
• the triangular rays of the cross section spread the kink of a hose whereby the contact area between the hose and the insulation is small and thus the thermal resistance remains high.
• the metal wire 21 may have a diameter of about 0.3 mm and a circle that just encloses the tips of the cross section have a diameter of 1 mm.
• Fig. 6 shows a section through a hose, which may be a fork hose 3 or a supply hose 5. Both types of tubes typically differ mainly by their diameter.
• the inner circumferential surface of the hose has projections 32, which serve to spread the jacket of the hose at kinks in order not to completely cut off the air flow despite kink.
• stabilizing threads 31 and 33 are on or introduced to reduce a longitudinal expansion of the hose.
• the stabilizing threads 31 and 33 can be introduced into the tubing during the manufacturing process, in particular into protrusions 32.
• the stabilizing threads 31 and 33 may be made of artificial or natural fiber material, plastic or metal.
• the reason for the stabilization threads is that heat-resistant PVC is too stiff and therefore, for example, TPE or silicone must be used.
• TPE thermoplastic polyurethane
• the latter materials are highly elastic, which may be undesirable in the longitudinal direction, because then occurring tensile forces must be absorbed by the heating wire and mechanically stress this and its connections. Since the hoses are operated at maximum pressures of a few 100 millibars, stabilization in the radial direction does not appear necessary.
• the stabilization threads in particular those in projections 32, consist of an electrically conductive material, in particular of metal, possibly surrounded by a thermally stable, not necessarily biocompatible, electrical insulation, these can be used for heating and replace heating wire 8. In this way, problems with non-biocompatible insulation materials can be circumvented.
• fork tube 3 and / or supply hose 5 may be surrounded by a thermal insulation 34. This should not be too thick, since in particular a thin fork tube comfort and a thick insulation means a loss of comfort. On the other hand, insulation can make the surface of the hoses soft and thus more comfortable. From a technical point of view, the insulation has the advantage of reducing the heating power.
• Figures 7, 9 and 11 show three perspective views of a second embodiment of a nose piece 42.
• Figures 8 and 10 show sections along the lines Z-Z and M-M, respectively.
• the second embodiment of the nose piece 42 differs only qualitatively from the embodiment of the nose piece 2.
• To reduce the noise emission nose piece 2 is bulbous, d. H. the clear cross-sectional area increases more strongly from the hose connections to the tines. As a result, the flow velocity of the air is reduced in order to keep the noise emission low.
• the reduction of the flow resistance by increasing the cross-sectional area in the nosepiece is negligible because the flow resistance is largely determined by the thickness of forked tube 3.
• three prototypes are being prepared, each with a different increase in cross-sectional area. Measurement results are not available yet.
• Nose piece 42 comprises hose connections 44, hose transition regions 45, connecting pieces 47, tines 52 with annular nubs 53 and a central connecting piece 48.
• an inner radius step 46 is located between hose transition regions 45 and hose connections 44, which just the difference between Inner and outer radius of fork tube 3 compensated to achieve the smoothest possible transition between the inner surface of fork tube 3 and nose piece 42.
• the projections 32 may be removed or corresponding projections may be integrally formed on the inner surface of the nose piece 42.
• the clear cross-sectional area in the hose transition region 45 widens.
• the transition regions 54 between tines 52 and connecting pieces 47 are generously rounded in order to reduce noise emission.
• this radius outside is 4.3 mm.
• the outer diameter of the tines is 5.5 mm near the connector and 5 mm near the aperture.
• the wall thickness is about 0.5 mm.
• transition region between the central connector 48 and the tines 52 is also rounded, wherein the outer radius is also in the range between 4 and 5 mm.
• the indentation 43 in the central connecting piece 48 is shown in section in FIGS. 8 and 10 and in a plan view in FIG. 9. It serves to set a defined flow resistance between the left and right side of the nasal goggles.
• the goggles are mirror symmetric. This is also true in most cases for the user. As long as mirror symmetry is given, no air flows through the central connector 48.
• the symmetry can be broken, for example, that either the left or right forked tube 3 is bent or the user has runny nose and therefore a nostril swollen. In the former case, it is desirable on the one hand that both tines are supplied via the still open hose. On the other hand, the kinked fork hose is not completely closed.
• a pressure drop at the central connector 48 may be desirable. If a nostril is swollen, it is desirable to apply more air over the other prongs. Also in this case, air flow through the central connector 48 is desirable.
• FIGS. 9, 10 and 11 also show the temperature sensor 7.
• the Y-piece 4 is shown enlarged. It can be seen above the two fork hose connections 91 and below the supply hose connection 93.
• the Transition region 95 between the two fork tube connections is rounded and in one embodiment has a radius of 1 mm.
• the fork tubes and the supply hose have an inner radius (without protrusions 32) of 3 and 5 mm, respectively.
• the rounding of transition region 95 is particularly important if, for example, due to bending of a fork tube asymmetric flow conditions exist.
• All ports have inner radius stages 92 and 94 to compensate for the difference between inner radius and outer radius of the connected hoses.
• the inner radius stages may either have projections corresponding to the projections 32 in the connected hoses and / or the projections 32 may be removed at the hose ends.

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• Health & Medical Sciences (AREA)
• Pulmonology (AREA)
• Veterinary Medicine (AREA)
• Emergency Medicine (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Hematology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Engineering & Computer Science (AREA)
• Otolaryngology (AREA)
• Orthopedics, Nursing, And Contraception (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)
• Eye Examination Apparatus (AREA)
• External Artificial Organs (AREA)
• Media Introduction/Drainage Providing Device (AREA)
• Respiratory Apparatuses And Protective Means (AREA)
• Thermotherapy And Cooling Therapy Devices (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
• Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
• Vehicle Step Arrangements And Article Storage (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Related Child Applications (1)

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ID=36127291

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Cited By (7)

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• 2005
  • 2005-01-07 DE DE102005000922A patent/DE102005000922A1/de not_active Withdrawn
  • 2005-12-30 AT AT05850200T patent/ATE375178T1/de active
  • 2005-12-30 JP JP2007549791A patent/JP5026281B2/ja active Active
  • 2005-12-30 DE DE112005003491T patent/DE112005003491A5/de not_active Withdrawn
  • 2005-12-30 CN CN2005800461666A patent/CN101098726B/zh active Active
  • 2005-12-30 EP EP05850200A patent/EP1715909B1/de active Active
  • 2005-12-30 WO PCT/DE2005/002335 patent/WO2006072231A2/de not_active Ceased
  • 2005-12-30 ES ES05850200T patent/ES2297769T3/es active Active
  • 2005-12-30 AT AT07113959T patent/ATE495779T1/de active
  • 2005-12-30 EP EP07113959A patent/EP1859831B1/de active Active
  • 2005-12-30 DE DE502005010895T patent/DE502005010895D1/de active Active
  • 2005-12-30 US US11/920,100 patent/US20090025723A1/en not_active Abandoned
  • 2005-12-30 PT PT101863199T patent/PT2374494T/pt unknown
  • 2005-12-30 DE DE502005001679T patent/DE502005001679D1/de active Active
  • 2005-12-30 ES ES10186319.9T patent/ES2621654T3/es active Active
  • 2005-12-30 EP EP10186319.9A patent/EP2374494B1/de active Active
  • 2005-12-30 ES ES07113959T patent/ES2359995T3/es active Active
• 2007
  • 2007-07-13 US US11/879,027 patent/US7775210B2/en active Active

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