CN105190252A - Rotary needle and expanding bellows pressure indicator - Google Patents
Rotary needle and expanding bellows pressure indicator Download PDFInfo
- Publication number
- CN105190252A CN105190252A CN201480025187.9A CN201480025187A CN105190252A CN 105190252 A CN105190252 A CN 105190252A CN 201480025187 A CN201480025187 A CN 201480025187A CN 105190252 A CN105190252 A CN 105190252A
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- plate
- base portion
- corrugated tube
- pressure
- chamber
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- 239000012530 fluid Substances 0.000 claims abstract description 35
- 230000004044 response Effects 0.000 claims abstract description 7
- 230000008602 contraction Effects 0.000 claims abstract description 6
- 230000009467 reduction Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 claims description 3
- 230000037303 wrinkles Effects 0.000 claims description 3
- 210000001124 body fluid Anatomy 0.000 claims description 2
- 239000010839 body fluid Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007767 bonding agent Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000005070 sphincter Anatomy 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 210000003708 urethra Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
-
- 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
- A61M16/04—Tracheal tubes
- A61M16/0434—Cuffs
- A61M16/044—External cuff pressure control or supply, e.g. synchronisation with respiration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/06—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the bellows type
- G01L7/063—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges of the bellows type with mechanical transmitting or indicating means
-
- 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
- A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
- A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback
- A61M2205/584—Means for facilitating use, e.g. by people with impaired vision by visual feedback having a color code
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pulmonology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Emergency Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Anesthesiology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
A fluid pressure indicating device is disclosed. The fluid pressure indicating device includes a base defining an aperture therethrough, a plate separated from the base by a variable distance, the plate defining a hole therethrough, a shaft including a helical surface disposed within the hole of the plate, a first bellows extending between the base and the plate, and a second bellows extending between the base and the plate, the second bellows disposed around the first bellows, the first bellows and the second bellows defining a first chamber therebetween. The first bellows and the second bellows expand or contract in response to a difference between a pressure inside the first chamber and a pressure outside the first chamber. The variable distance between the base and the plate varies upon expansion or contraction of the first bellows and the second bellows, such that the shaft rotates relative to the plate.
Description
Technical field
The present invention relates generally to a kind of pressure indicator.More specifically, the present invention relates to a kind of pressure indicator being applicable to the inflatable balloon cuff of endotracheal tube.
Background technology
Inflatable balloon cuff is proposed, in order to apply clossing pressure to the flowing inner chamber of patient body or to seal between medicine equipment and the flowing inner chamber of patient body.Such as, endotracheal tube comprises inflatable balloon cuff, and when inflatable balloon cuff to be inserted in tracheae and to expand with gap between blanket gas inner catheter tube and tracheae, the profile of the tracheae of this inflatable balloon cuff and patient is fitted.In addition, pressure indicator is proposed, in order to monitor the hydrodynamic pressure in inflatable balloon cuff.
Application number is 4,727, the United States Patent (USP) case (hereinafter referred to " ' 877 patent ") of 887 describes a kind of artificial sphincter with closed cuff, and described closed cuff is used for applying clossing pressure to the flowing inner chamber (such as, urethra) of patient body.' 887 patents propose a kind of combined hypodermic injection pressure gauge (combinationhypodermicmanometer) comprising piston component further, and described piston component is adapted to pass through the sleeve to-and-fro movement being filled with fluid.Along with the piston component of ' 887 patents is through sleeve motion, corrugated tube is compressed, and alter is switched to the height of the fluid in the pressure gauge of corrugated tube whereby.But the manometric precision of hypodermic injection of ' 887 patents depends on the orientation of pressure gauge relative to gravity, it is made to be difficult in practice use in the mode with precision.In addition, the breaking or reveal and cause manometer fluid and the risk of fluid chemical field that contacts with closed cuff of corrugated tube.
Pressure indicator comprises the corrugated tube being positioned at the hollow shell that transparent material is made, and makes it possible to see indicator scale through shell, and known this pressure indicator uses together with pressure cuff.But this device can have long axial length to provide enough pointing accuracies, and cannot use together with opaque outer material.
Therefore, need the following method and apparatus being used to indicate the pressure in inflatable balloon cuff, described method and apparatus by little and the indicator of low cost provides enough precision, and provides the insensitive accuracy of the dimensional orientation of equipment.
Summary of the invention
Aforementioned claim is met to a great extent by the present invention, wherein provides a kind of equipment in one aspect, and described equipment comprises in certain embodiments: plate, and described plate is limited with the hole through described plate; And the axle that can rotate about the axis, described axle comprises the helical surface be provided through in the hole of plate, wherein, and the fluid communication that a part for plate and pressure will be measured.
An aspect of of the present present invention advantageously provides a kind of hydrodynamic pressure indicating device, and described device comprises: base portion, and described base portion is limited with the base portion aperture through described base portion; With the plate of the spaced apart variable range of described base portion, described plate is limited with the hole through described plate; The axle that can rotate around first axle, described axle comprises the helical surface in the hole being arranged on described plate; The first corrugated tube extended between described base portion and described plate; And the second corrugated tube extended between described base portion and described plate, described second ripple circumference of cannon bone is arranged around described first corrugated tube, and described first corrugated tube and described second corrugated tube limit the first chamber between them.Described first corrugated tube and described second corrugated tube expand in response to the pressure reduction between the pressure of described first chamber interior and the pressure of described first exterior thereto or shrink, and the variable range between described base portion and described plate changes along with the expansion of described first corrugated tube and described second corrugated tube or contraction, makes described axle rotate relative to described plate.
Another aspect of the present invention advantageously provides a kind of inflatable sleeves bag system, and described inflatable sleeves bag system comprises: conduit, and described conduit is limited with the inner chamber in described conduit; The inflatable bladder body be communicated with described cavity fluid; And hydrodynamic pressure indicator.Described hydrodynamic pressure indicator comprises: plate, and described plate is limited with the hole through described plate, and the axle that can rotate around first axle, and described axle comprises the helical surface be arranged in described hole.A part for described plate is communicated with described inflatable bladder body fluid by described inner chamber.
Another aspect of the present invention advantageously provides a kind of hydrodynamic pressure indicating device, and described hydrodynamic pressure indicating device comprises: base portion, and described base portion is limited with the base portion aperture through described base portion; With the plate of the spaced apart variable range of described base portion, described plate is limited with the hole through described plate; The axle that can rotate around first axle, described axle comprises the helical surface in the hole being arranged on described plate; The first device for limiting variable volume extended between described base portion and described plate; And the second device for limiting described variable volume extended between described base portion and described plate, arrange around described first device for limiting described variable volume for described second device limiting described variable volume.The first chamber between them is limited for limiting described first device of described variable volume and described second device for limiting described variable volume.The volume of described first chamber expands in response to the pressure reduction between the pressure of described first chamber interior and the pressure of described first exterior thereto or shrinks, and the variable range between described base portion and described plate changes along with the expansion of the volume of described first chamber or contraction, makes described axle rotate relative to described plate.
Therefore, herein briefly (instead of broadly) describes specific embodiment of the present invention, is described in detail in this can be better understood and so that the present invention can be understood better to the contribution of this area so that of the present invention.Certainly, other embodiment of the present invention will be described below and will form the theme of dependent claims of the present invention.
In this respect, before explaining at least one embodiment of the invention in detail, should understand, that the present invention is not limited to state in following the explanation in an application of the invention or details of the structure shown in accompanying drawing and the layout of parts.The present invention can for except those described embodiments embodiment and can be put into practice in many ways and be performed.In addition, term used herein and term and summary are to be described, and are not considered to be restrictive.
Like this, it will be understood by those skilled in the art that present disclosure based on imagination can easily be used as performing other structure of several object of the present invention, the basis of method and system for designing.Therefore, claim is believed to comprise this equivalent constructions, as long as it does not exceed the spirit and scope of the present invention.
Accompanying drawing explanation
Fig. 1 illustrates the schematic diagram of pressure sleeve bag system according to an embodiment of the invention;
Fig. 2 illustrates the schematic diagram of pressure sleeve bag system according to another embodiment of the present invention;
Fig. 3 illustrates the schematic diagram of endotracheal tube system according to an embodiment of the invention;
Fig. 4 illustrates the xsect of the endotracheal tube system shown in Fig. 3 along cross section 3-3;
Fig. 5 illustrates the skeleton view of pressure indicator according to an embodiment of the invention;
Fig. 6 illustrates the exploded view of the pressure indicator in Fig. 5;
Fig. 7 illustrates the exploded view of the modification of pressure indicator according to another embodiment of the present invention;
Fig. 8 illustrates the vertical view of the pressure indicator in Fig. 5;
Fig. 9 shows the cross-sectional view of the pressure indicator in Fig. 8 along cross section 9-9;
Figure 10 shows the birds-eye perspective of bellows component according to an embodiment of the invention;
Figure 11 shows the face upwarding view of the bellows component shown in Figure 10.
Embodiment
With reference to the accompanying drawings the present invention is described, Reference numeral identical in accompanying drawing represents identical parts all the time.Provide a kind of pressure indicator according to one embodiment of the invention, described indicator is for detecting the swelling pressure be applied in inflatable balloon cuff.
Fig. 1 illustrates the schematic diagram of pressure sleeve bag system 10 according to an embodiment of the invention.Pressure sleeve bag system 10 comprises the inflatable balloon cuff 12 be communicated with source of pressurised fluid 14 fluid by feed path 16.Pressure sleeve bag system 10 comprises the pressure indicator 18 be communicated with feed path 16 fluid further, makes the flow of pressurized fluid from source of pressurised fluid 14 flow through pressure indicator 18 in the way flowing to inflatable balloon cuff 12.For example, pressure fluid can comprise any fluid liquid (such as, water) or any gaseous fluid (such as, air).
Pressure sleeve bag system 10 can comprise the first valve 20 and the second valve 24 be arranged in feed path 16, and described second valve 24 branches out from feed path 16 and is communicated with this feed path fluid.In one embodiment of the invention, the first valve 20 is non-return valve, and this non-return valve is oriented such that the first valve 20 only allows along from source of pressurised fluid 14 towards the flowing in the direction of inflatable balloon cuff 12.In another embodiment of the invention, first valve 20 is the isolation valve (spring-loadedisolationvalve) that spring is housed of normally closed type, and the isolation valve that spring is housed of described normally closed type is configured to be opened by the syringe female Luer of the activating pressure cover bag system 10 as source of pressurised fluid 14.In another embodiment of the present invention, valve 24 is manually operated bleed valve.In another embodiment of the present invention, valve 24 is for being equipped with the pressure-release valve of spring, and described pressure-release valve is configured under threshold value high pressure from inflatable balloon cuff 12 pressure release.
Source of pressurised fluid 14 can comprise: any pump, such as, and syringe, elastic ball, rotary pump or positive displacement pump; The pumping chamber of convection cell pressurization; Their combination; Or it is known to persons of ordinary skill in the art for carrying other device any of pressure fluid.Inflatable balloon cuff 12 can comprise elastic film or other structure expanded when pressurizeing known to persons of ordinary skill in the art.
Fig. 2 illustrates the schematic diagram of the pressure sleeve bag system 10 according to an alternate embodiment of the present invention.In fig. 2, pressure indicator 18 is communicated with feed path 16 fluid by branched bottom 25.Herein, pressure indicator 18 has the entrance be communicated with feed path 16 fluid, but described pressure indicator does not have outlet.
Referring now to Fig. 3 and Fig. 4, it is intended that Fig. 3 illustrates the schematic diagram of endotracheal tube system 26 according to an embodiment of the invention; And Fig. 4 illustrates the xsect of the endotracheal tube system 26 shown in Fig. 3 along cross section 3-3.Endotracheal tube system 26 comprises slender conduit 28, and described slender conduit limits main inner chamber 30 (see Fig. 4) wherein.Inflatable balloon cuff 12 is arranged around the outer peripheral edges 32 of slender conduit 28.In one embodiment, inflatable balloon cuff 12 limits the annular space around slender conduit 28 in inflatable balloon cuff.
Slender conduit 28 can limit further and fill to inner chamber 34 (see Fig. 4), described in fill the space be switched to cavity fluid in inflatable balloon cuff 12.Feed path 16 can fluid communication to filling to inner chamber 34, and realize fluid between inflatable balloon cuff 12 and source of pressurised fluid 14 whereby and be communicated with.
Fig. 5 illustrates the skeleton view of pressure indicator 18 according to an embodiment of the invention.Pressure indicator 18 comprises shell 36, and shell 36 limits ingress port 38 and can limit outlet port 40.Pressure indicator 18 to feed path 16 (see Fig. 1), or is switched to feed path 16 (see Fig. 2) when there is not outlet port 40 by means of only ingress port 38 by ingress port 38 and outlet port 40 fluid communication.Pressure indicator 18 can comprise pointer 42 and pressure mark 44.
Fig. 6 shows the exploded view of the pressure indicator 18 in Fig. 5.The inside surface 46 of shell 36 also limits cavity 48 in shell.The cavity 48 of shell 36 holds axle 50 and the bellows component 54 with helical surface 52.Bellows component 54 comprises at least one corrugated tube 56 and plate 58.Plate 58 limits the hole 60 through plate 58, and its mesopore 60 receives the helical surface 52 of axle 50.
Pressure indicator 18 can comprise the cover top portion 62 be arranged on shell 36.In one embodiment of the invention, pressure mark 44 is arranged in cover top portion 62.Alternatively, pressure mark 44 can be arranged on plate 58.Cover top portion 62 can be limited with the hole 64 through cover top portion 62, makes hole 64 receive axle 50.Pointer 42 can be connected to the first end 68 of axle 50, and pointer 42 and axle 50 are together rotated.Pressure indicator 18 may further include the window 70 be arranged in cover top portion 62, and pointer 42 is arranged between cover top portion 62 and window 70.
Window 70 at least partially can through visible ray, make the user of pressure indicator 18 can see cover top portion 62 at least partially, pointer 42 or their combination.In addition, the entirety of window 70 can be roughly transparent or translucent.In one embodiment, translucent pressure mark 71 can be arranged on window 70, makes to can pass through translucent pressure mark 71 and pointer 42 seen by window 70.
Fig. 7 shows the exploded view of the modification of pressure indicator 18 according to another embodiment of the present invention.In the figure 7, disk 72 is connected to axle 50, and disk 72 and axle 50 are together rotated.Pressure mark 44 can be arranged on disk 72 and to indicate mark 74 and can be arranged on window 70, makes to indicate mark 74 and does not move relative to shell 36.It is to be appreciated that the non-limiting example shown in Fig. 7 can comprise any feature alone or in combination shown in Fig. 6.
Referring now to Fig. 8 and Fig. 9, it is to be appreciated that Fig. 8 shows the vertical view of the pressure indicator 18 in Fig. 5, and Fig. 9 shows the cross-sectional view along the cutting line 9-9 in Fig. 8 of pressure indicator 18.As shown in Figure 9, shell 36 wall 78 that comprises base portion 76 further and extend from base portion 76.The inside surface 46 of shell 36 can be the surface in the face of bellows component 54 of wall 78.
Bellows component 54 comprises outward corrugated tube 80 and inner corrugated pipe 82, and outward corrugated tube 80 is arranged around inner corrugated pipe 82.Outward corrugated tube 80 and inner corrugated pipe 82 all extend between the base portion 76 of shell 36 and plate 58.In addition, outward corrugated tube 80 and inner corrugated pipe 82 are all attached to base portion 76 and plate 58 at the longitudinal end place of each corrugated tube by the means of being tightly connected.Corrugated tube 80,82 can comprise with the means of being tightly connected between base portion 76 and plate 58 weld, bonding agent, securing member as screw or rivet, their combination or other securing member known to persons of ordinary skill in the art.
Shell 36 is limited with the flow channel 84 through shell 36 further.In one embodiment, flow channel 84 is communicated with outlet port 40 fluid with ingress port 38.In an alternative embodiment, wherein pressure indicator 18 is connected to the branched bottom 25 (see Fig. 2) of the feed path 16 of pressure sleeve bag system 10, and this flow channel 84 is only communicated with ingress port 38 fluid.Outward corrugated tube 80, inner corrugated pipe 82, base portion 76 and plate 58 limit the first chamber 86 wherein.First chamber 86 can be communicated with flow channel 84 fluid by one or more base portion aperture 88 extending through base portion 76.
Shell 36, outward corrugated tube 80, inner corrugated pipe 82 and plate 58 can limit the second chamber 90.Second chamber 90 can keep sealing with the surrounding environment 92 of pressure indicator 18.Alternatively, shell 36 can be limited with the aperture 94 through shell 36, and the second chamber 90 can be communicated with surrounding environment 92 fluid by aperture 94.
Outward corrugated tube 80 and inner corrugated pipe 82 can comprise the fexible film in general cylindrical shape.Corrugated tube 80,82 can be formed by polymkeric substance, metal forming, yarn fabric, paper, their combination or other similar material manufacture known to persons of ordinary skill in the art.In one embodiment of the invention, corrugated tube 80,82 comprises for corrugated tube 80,82 provides the wrinkle structure of elastic force.In another embodiment of the invention, corrugated tube 80,82 does not have wrinkle, but obtains elastic force by the elastic property of film forming material.
Plate 58 and base portion 76 be spaced apart variable range 96 according to the pressure reduction between the first chamber 86 and the second chamber 90.The elastic force of outward corrugated tube 80 or inner corrugated pipe 82 can make plate 58 be biased towards the base portion 76 of shell 36.In addition, the elastic force of outward corrugated tube 80 can make the position of plate 58 towards the space minimized in the first chamber 86 and maximize the location bias in the space in the second chamber 90.Along with the pressure increase in flow channel 84, the pressure reduction between the first chamber 86 and the second chamber 90 also can increase, thus corrugated tube 80,82 is extended along the axial direction of axle 50.And then the variable range 96 between plate 58 and base portion 76 increases along with the pressure increase in flow channel 84.In addition, the space in the first chamber 86 increases along with the pressure increase in flow channel 84.
Plate 58, along the moving of axis 97 direction of axle 50, makes axle 50 be rotated by the helical surface 52 of axle 50 and the joint in the hole 60 through plate 58.Base portion 76 can comprise the swivel bearing 98 of the second end 100 of engages axle 50, thus allows axle 50 to rotate around the axis 97 of axle 50.In addition, cover top portion 62 can comprise the swivel bearing 102 of engages axle 50.Therefore, axle 50 is relative to the position of rotation of shell 36 and the position of rotation of pointer 42 and the pressure reduction functional dependence between the first chamber 86 and the second chamber 90.Therefore, pressure mark 44 can be designed to mark 44,71 with the pressure on shell 36 and matches and indicate the difference of the pressure between the first chamber 86 and the second chamber 90 quantitatively or qualitatively.
In one embodiment of the invention, pressure mark 44 indicates the pressure size sensed quantitatively.In another embodiment of the invention, pressure mark 44 indicates the 3rd too high scope 108 (see Fig. 8) of the first too low scope 104 of pressure, acceptable second scope 106 of pressure and pressure qualitatively.In addition, the first scope 104, second scope 106 and the 3rd scope 108 can be associated with unique color.Such as, the first scope 104, second scope 106 and the 3rd scope 108 can be associated with yellow, green and redness respectively.Those skilled in the art it is to be appreciated that, other similar pressure mark 44 can be applied to pressure indicator 18 according to application-specific.In addition, it is to be appreciated that the example of pressure mark 44 is also applied to translucent pressure mark 71 (see the Fig. 6) above discussed.
Relation between the corresponding change of the change of the variable range 96 between plate 58 to base portion 76 and the position of rotation of axle 50 is determined by the pitch of spiral part 52.Therefore, the pitch of the spiral part 52 of axle 50 can be chosen to: make the quite little change of variable range 96 can cause the very large change of the position of rotation of axle 50 and pointer 42.Therefore, when this displacement of variable range 96 is not obvious when there is not the corresponding rotation of axle 50 and pointer 42, via pointer 42 indicated pressure, the overall size of pressure indicator 18 can be minimized by utilizing the little displacement of variable range 93.
Referring now to Figure 10 and Figure 11, it is to be appreciated that Figure 10 shows the birds-eye perspective of bellows component 54 according to an embodiment of the invention; And Figure 11 shows the face upwarding view of the bellows component 54 shown in Figure 10.Bellows component 54 has inner corrugated pipe 82 and outward corrugated tube 80.In one embodiment, inner corrugated pipe extends from the first ring-shaped edge 112 towards end cap 114 along longitudinal direction 110 roughly.Inner corrugated pipe 82 can limit the second ring-shaped edge 116 with the intersection of end cap 114.
End cap 114 can from the second ring-shaped edge 116 toward the outside corrugated tube 80 extend along radial direction 118 roughly.End cap 114 can limit the 3rd ring-shaped edge 120 with the intersection of outward corrugated tube 80.Outward corrugated tube 80 is extended end cap 114 along inner corrugated pipe 82 along roughly longitudinal direction.In another embodiment, outward corrugated tube 80 ends at the 4th ring-shaped edge.
In one embodiment of the invention, bellows component 54 can be formed by single, the manufacture of continuous print material pieces.In another embodiment of the invention, inner corrugated pipe 82 and end cap 114 can be formed by independently material pieces manufacture, are then linked by welding, bonding agent or other fastening means known to persons of ordinary skill in the art.In another embodiment of the present invention, outward corrugated tube 80 and end cap 114 can be formed by independently material pieces manufacture, are then linked by welding, bonding agent or other fastening means known to persons of ordinary skill in the art.
Although pressure indicator 18 is used to indicate the hydrodynamic pressure in pressure sleeve bag system 10, pressure indicator 18 also can be used for measuring the hydrodynamic pressure in other system having benefited from the instruction of quantitative or qualitative hydrodynamic pressure.
Many feature and advantage of the present invention are become clearly by detailed description, and therefore, claims are intended to cover the of the present invention all this feature and advantage fallen in connotation of the present invention and scope.In addition, because those skilled in the art easily expect many amendments and distortion, so do not wish to limit the present invention to shown with in described precise arrangements and operation, and therefore, all suitable amendments and equivalent all can be considered to fall within the scope of the present invention.
Claims (20)
1. a hydrodynamic pressure indicating device, comprising:
Base portion, described base portion is limited with the base portion aperture through described base portion;
With the plate of the spaced apart variable range of described base portion, described plate is limited with the hole through described plate;
The axle that can rotate around first axle, described axle comprises the helical surface in the hole being arranged on described plate;
The first corrugated tube extended between described base portion and described plate; And
The second corrugated tube extended between described base portion and described plate, described second ripple circumference of cannon bone is arranged around described first corrugated tube, and described first corrugated tube and described second corrugated tube limit the first chamber between them,
Wherein, described first corrugated tube and described second corrugated tube expand in response to the pressure reduction between the pressure of described first chamber interior and the pressure of described first exterior thereto or shrink, and
Wherein, the variable range between described base portion and described plate changes along with the expansion of described first corrugated tube and described second corrugated tube or contraction, and described axle is rotated relative to described plate.
2. hydrodynamic pressure indicating device according to claim 1, comprises the flow channel by described base portion aperture and described first chamber in fluid communication further.
3. hydrodynamic pressure indicating device according to claim 1 and 2, comprises setting pointer on the shaft further.
4. hydrodynamic pressure indicating device according to claim 3, comprises the pressure mark on the surface of described pointer being arranged on described plate further.
5. the hydrodynamic pressure indicating device according to any one of claim 3, comprises further:
Around the shell of described second corrugated tube; And
Be arranged on the pressure mark on the surface of described shell.
6. hydrodynamic pressure indicating device according to claim 5, wherein, the part marked adjacent to described pressure of described shell can through visible ray.
7. hydrodynamic pressure indicating device according to claim 5, wherein, described pointer is arranged between described plate and described shell, and can pass through described shell and described pressure mark see described pointer.
8. the hydrodynamic pressure indicating device according to any one of claim 1-7, comprises the shell around described second corrugated tube further.
9. hydrodynamic pressure indicating device according to claim 8, wherein, described shell and described second corrugated tube limit the second chamber between them, and
Wherein, described shell is limited with the enclosure hole through described shell, and described second chamber is communicated with the surrounding ambient fluid around described hydrodynamic pressure indicating device by described enclosure hole.
10. hydrodynamic pressure indicating device according to claim 9, wherein, described first corrugated tube and described second corrugated tube expand in response to the pressure reduction between the pressure of described first chamber interior and the pressure of described second chamber interior or shrink.
11. hydrodynamic pressure indicating devices according to any one of claim 1-10, wherein, described first corrugated tube and described second corrugated tube comprise multiple wrinkle separately.
12. hydrodynamic pressure indicating devices according to any one of claim 1-11, wherein, described first corrugated tube and described second corrugated tube are separately in general cylindrical shape.
13. hydrodynamic pressure indicating devices according to any one of claim 1-12, comprise further and are fixed to described base portion and the bearing being rotatably attached to described axle.
14. hydrodynamic pressure indicating devices according to Claim 8 according to any one of-10, comprise further and are fixed to described shell and the bearing being rotatably attached to described axle.
15. 1 kinds of inflatable sleeves bag systems, comprising:
Conduit, described conduit is limited with the inner chamber in described conduit;
The inflatable bladder body be communicated with described cavity fluid; And
Hydrodynamic pressure indicator, described hydrodynamic pressure indicator comprises:
Plate, described plate is limited with the hole through described plate, and
The axle that can rotate around first axle, described axle comprises the helical surface be arranged in described hole,
Wherein, a part for described plate is communicated with described inflatable bladder body fluid by described inner chamber.
16. inflatable sleeves bag systems according to claim 15, wherein, described hydrodynamic pressure indicator comprises further:
Base portion, described base portion is limited with the base portion aperture through described base portion, described base portion and the spaced apart variable range of described plate;
The first corrugated tube extended between described base portion and described plate; And
The second corrugated tube extended between described base portion and described plate, described second ripple circumference of cannon bone is arranged around described first corrugated tube, and described first corrugated tube and described second corrugated tube limit the first chamber between them.
17. inflatable sleeves bag systems according to claim 16, wherein, described first corrugated tube and described second corrugated tube expand in response to the pressure reduction between the pressure of described first chamber interior and the pressure of described first exterior thereto or shrink, and
Wherein, the variable range between described base portion and described plate changes along with the expansion of described first corrugated tube and described second corrugated tube or contraction, and described axle is rotated relative to described plate.
18. 1 kinds of hydrodynamic pressure indicating devices, comprising:
Base portion, described base portion is limited with the base portion aperture through described base portion;
With the plate of the spaced apart variable range of described base portion, described plate is limited with the hole through described plate;
The axle that can rotate around first axle, described axle comprises the helical surface in the hole being arranged on described plate;
The first device for limiting variable volume extended between described base portion and described plate; And
The second device for limiting described variable volume extended between described base portion and described plate, described second device for limiting described variable volume is arranged around described first device for limiting described variable volume, the first chamber between them is limited for limiting described first device of described variable volume and described second device for limiting described variable volume
Wherein, the volume of described first chamber expands in response to the pressure reduction between the pressure of described first chamber interior and the pressure of described first exterior thereto or shrinks, and
Wherein, the variable range between described base portion and described plate changes along with the expansion of the volume of described first chamber or contraction, and described axle is rotated relative to described plate.
19. hydrodynamic pressure indicating devices according to claim 18, comprise further and make described plate by towards the elastic component of location bias of volume minimizing described first chamber.
20. hydrodynamic pressure indicating devices according to any one of claim 18-19, comprise further and make described plate by towards the elastic component of location bias of volume maximizing described second chamber.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361784546P | 2013-03-14 | 2013-03-14 | |
| US61/784,546 | 2013-03-14 | ||
| PCT/US2014/027806 WO2014152807A1 (en) | 2013-03-14 | 2014-04-29 | Rotary needle and expanding bellows pressure indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105190252A true CN105190252A (en) | 2015-12-23 |
Family
ID=51527775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480025187.9A Pending CN105190252A (en) | 2013-03-14 | 2014-03-14 | Rotary needle and expanding bellows pressure indicator |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20140271292A1 (en) |
| EP (1) | EP2972121A4 (en) |
| JP (1) | JP2016513807A (en) |
| CN (1) | CN105190252A (en) |
| AU (1) | AU2014236571A1 (en) |
| CA (1) | CA2906087A1 (en) |
| WO (1) | WO2014152807A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112513604A (en) * | 2018-04-03 | 2021-03-16 | 特拉法格股份公司 | Density monitor with integrated low pressure indicator |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3525841A4 (en) * | 2016-10-17 | 2020-04-08 | Micromed Co., Ltd. | Micro delivery device |
| WO2019143707A1 (en) * | 2018-01-16 | 2019-07-25 | Q.E.D. Environmental Systems, Inc. | Fluid level monitoring system and method incorporating pressure sensor system having inflatable/collapsible bag |
| GB201817046D0 (en) * | 2018-10-19 | 2018-12-05 | Breatnach Cormac | A medical device |
| CN112562472B (en) * | 2020-12-10 | 2022-09-23 | 河北中医学院 | A multifunctional gastric lavage model and gastric lavage training method |
| ES2956095A1 (en) * | 2022-05-05 | 2023-12-13 | Eiberle Claudio Cristino Gerster | Continuous monitoring of endotracheal tube pneumotamponade pressure (Machine-translation by Google Translate, not legally binding) |
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- 2014-03-13 US US14/209,165 patent/US20140271292A1/en not_active Abandoned
- 2014-03-14 EP EP14770082.7A patent/EP2972121A4/en not_active Withdrawn
- 2014-03-14 JP JP2016502630A patent/JP2016513807A/en active Pending
- 2014-03-14 CN CN201480025187.9A patent/CN105190252A/en active Pending
- 2014-03-14 AU AU2014236571A patent/AU2014236571A1/en not_active Abandoned
- 2014-03-14 CA CA2906087A patent/CA2906087A1/en not_active Abandoned
- 2014-04-29 WO PCT/US2014/027806 patent/WO2014152807A1/en active Application Filing
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|---|---|---|---|---|
| US1652941A (en) * | 1925-10-12 | 1927-12-13 | Gen Electric | Fluid-flow indicator |
| US3262317A (en) * | 1963-09-30 | 1966-07-26 | Jr Somers H Smith | Differential pressure gage |
| US20090145236A1 (en) * | 2002-05-24 | 2009-06-11 | Ultimate Medical Pty Ltd | Device and method for pressure indication |
| CN201281614Y (en) * | 2008-11-04 | 2009-07-29 | 杭州华源人工环境工程有限公司 | Air quantity measuring device of air quantity change end device |
| CN102346055A (en) * | 2010-08-03 | 2012-02-08 | 深圳市泉源仪表设备制造有限公司 | Differential pressure and displacement double-parameter measurement variable-area target type flowmeter |
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| CN112513604A (en) * | 2018-04-03 | 2021-03-16 | 特拉法格股份公司 | Density monitor with integrated low pressure indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014152807A1 (en) | 2014-09-25 |
| EP2972121A1 (en) | 2016-01-20 |
| CA2906087A1 (en) | 2014-09-25 |
| US20140271292A1 (en) | 2014-09-18 |
| WO2014152807A8 (en) | 2015-10-15 |
| AU2014236571A1 (en) | 2015-10-22 |
| JP2016513807A (en) | 2016-05-16 |
| EP2972121A4 (en) | 2016-02-24 |
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Application publication date: 20151223 |