CN103070679B - The detection method that the transmission of liquid low pressure, sensing device and urinary urine bladder hydraulic pressure are strong - Google Patents
The detection method that the transmission of liquid low pressure, sensing device and urinary urine bladder hydraulic pressure are strong Download PDFInfo
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- CN103070679B CN103070679B CN201210077393.7A CN201210077393A CN103070679B CN 103070679 B CN103070679 B CN 103070679B CN 201210077393 A CN201210077393 A CN 201210077393A CN 103070679 B CN103070679 B CN 103070679B
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- 239000007788 liquid Substances 0.000 title claims abstract description 297
- 210000002700 urine Anatomy 0.000 title claims abstract description 54
- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 230000002485 urinary effect Effects 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 239000002775 capsule Substances 0.000 claims abstract description 101
- 206010011732 Cyst Diseases 0.000 claims abstract description 21
- 208000031513 cyst Diseases 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000004816 latex Substances 0.000 claims description 6
- 229920000126 latex Polymers 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 8
- 210000001635 urinary tract Anatomy 0.000 abstract description 7
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- 230000036724 intravesical pressure Effects 0.000 description 3
- 230000003907 kidney function Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000721 bacterilogical effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- 206010013990 dysuria Diseases 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Abstract
The invention relates to the detection method that the transmission of a kind of liquid low pressure, sensing device and urinary urine bladder hydraulic pressure are strong, the transmission of described liquid low pressure, sensing device comprise: liquid capsule assembly, pressure transducer and fixed cell; Described liquid capsule assembly comprises liquid stream incoming interface, liquid stream outgoing interface and liquid blister cavities body, liquid stream incoming interface and liquid stream outgoing interface are respectively used to be connected with liquid conduits, make liquid by liquid stream incoming interface influent blister cavities body, and by liquid stream outgoing interface effluent capsule assembly; The pressure-sensitive face of pressure transducer fully contacts with the cyst wall of described liquid blister cavities body as piezometric surface, can obtain and the pressure data of liquid in transmission fluid blister cavities body to make pressure transducer; Pressure transducer and described liquid capsule assembly are removably fixed by fixed cell.Be applied to the monitoring to human body urinary tract system, because the pressure-sensitive parts of sensor directly do not contact urine, only need change liquid capsule assembly as requested in using, decrease the loss of medical apparatus and instruments resource.
Description
Technical field
The invention relates to the transmission of a kind of liquid low pressure, sensing device, and utilize this device to detect the method for intravesical urine pressure.
Background technology
The Clinical Urinary hydromechanics of urology branch is pointed out, for the patient having dysuria, if urine storage phase intravesical pressure is continued above 40cm/H
2o, the phase of urinating is continued above 60cm/H
2o, the duration reaches more than 1 year person, and renal function 100% can suffer damage.And the monitoring strengthened urinary tract system and process, accomplish that low voltage-controlled urine and control are infected, greatly will reduce the possibility that severe complication appears in urinary system.Taking in corresponding measure to this, the very important point is the mensuration to intravesical urine pressure (by force), and urine storage phase intravesical pressure reaches 40cm/H
2bladder capacity corresponding during O is " comparatively safe bladder capacity ", just can reach the object of protection bladder structure and function, even renal function protecting in this range of capacity.
In prior art, the detection of liquid pressure in human body is still far from perfect, mainly through the liquid pressure in the electronic product human body such as pressure transducer, the usual cost of this series products using pressure transducer to form is higher, and need pressure transducer directly with liquid comes into contact ability tracer liquid pressure, in order to prevent the requirement of infection and health, this pressure transducer needs often to change, also its use of impossible many people, be a kind of very large loss as medical apparatus and instruments in clinical practice, be so just more difficult to widespread adoption and popularization clinically.
Summary of the invention
The invention provides that a kind of liquid low pressure transmits, sensing device, for solving the problem of the high and medical apparatus and instruments resource of liquid pressure sensing device replacement cost in prior art too loss.
The present invention also provides a kind of sensing device detecting urine pressure in bladder, the transmission of described liquid low pressure, sensing device are combined with the urinary catheter systems of Clinical practice, while realization is monitored at any time to bladder pressure, sensor can be avoided and directly contacts urine and cause the problem that sensing device replacement cost is high.
The present invention also provides a kind of method detecting urine pressure in bladder, the transmission of described liquid low pressure, sensing device are combined with the urinary catheter systems of Clinical practice, while can obtaining intravesical urine pressure information, avoid sensor and directly contact urine and cause the problem that sensing device replacement cost is high.
The invention provides the transmission of a kind of liquid low pressure, sensing device, it comprises:
Liquid capsule assembly, pressure transducer, fixed cell;
Described liquid capsule assembly comprises liquid stream incoming interface, liquid stream outgoing interface and liquid blister cavities body, described liquid stream incoming interface and liquid stream outgoing interface are respectively used to be connected with liquid conduits, make liquid by described liquid stream incoming interface influent blister cavities body, and flow out described liquid capsule assembly by described liquid stream outgoing interface;
The pressure-sensitive face of pressure transducer fully contacts with the cyst wall of described liquid blister cavities body as piezometric surface, can obtain and transmit the pressure data of liquid in described liquid blister cavities body to make pressure transducer;
Described pressure transducer and described liquid capsule assembly are removably fixed by fixed cell.Like this, by pressure transducer and described liquid capsule assembled, can be fixed together, and handling can be convenient to.
According to liquid low pressure transmission of the present invention, sensing device, by liquid capsule assembly is connected in the flow channel for liquids of cavity volume to be measured, this cavity volume to be measured is communicated with liquid blister cavities body, liquid pressure in the liquid blister cavities body that just can be provided by sensor, know the pressure in cavity volume to be measured, further, detachable between liquid capsule assembly and sensor, can use easily and change parts.Liquid low pressure of the present invention is transmitted, the urethral catheterization system in combination of sensing device and Clinical practice, namely, liquid capsule assembly and bladder are conducted, and may be used for urine pressure in the bladder of examination and controlling patient, thus provide convenient for the diagnosis and treatment of related disorder patients and help.
Transmit according to liquid low pressure provided by the invention, sensing device, preferably, described liquid blister cavities body be at least that latex or silica gel material are formed as the cyst wall of piezometric surface.That is, liquid blister cavities body preferably adopts the thin-wall construction of elastomeric material, is more conducive to sensor to the acquisition compared with low pressure, such as, selects to be used for liquid blister cavities body and is not more than 0.3 millimeter as the wall thickness of piezometric surface.
Transmit according to liquid low pressure provided by the invention, sensing device, described liquid stream incoming interface and the liquid stream outgoing interface of described liquid capsule assembly are zigzag pressure inlets, the direction that the sawtooth inclined-plane of described pressure inlet inserts towards described liquid conduits.The adapter described in application with broached-tooth design is more conducive to and contacts with the medial wall of liquid conduits, and such as, catheter is generally latex flexible pipe, and the broached-tooth design of interface outer wall docile can realize the airtight connection of system well in catheter inwall.
According to liquid low pressure transmission provided by the invention, sensing device, the liquid stream incoming interface of described liquid capsule assembly and/or also there is directional component respectively between liquid stream outgoing interface and liquid blister cavities body, correspond to this directional component in described fixed cell and be provided with catch mechanism, axis can not be produced or move radially or rotate when described liquid capsule assembly is fixed in fixed cell.Namely, by this directional component, be more conducive to liquid capsule assembly in a fixation unit fixing, thus guarantee the abundant laminating in liquid capsule piezometric surface and sensor pressure-sensitive face in testing process, in a particular embodiment, described directional component can be that at least one is protruding, and described catch mechanism is then the groove of the fixed cell matched with described projection.When fixed cell is fixed connection to liquid capsule assembly and pressure transducer, mutually holding of the projection on liquid capsule assembly and the groove on fixed cell, makes liquid capsule assembly that the movement/rotation of all directions can not occur, thus obtains stable pressure data.
According to the solution of the present invention, the liquid blister cavities body of described pressure transducer and at least liquid capsule assembly is embedded in fixed cell, and more preferably the part of liquid blister cavities body except the piezometric surface unit that is all fixed wrapped up.
According to the embodiment of liquid low pressure transmission of the present invention, sensing device, described fixed cell is stacked and formed so that demountable structure is affixed by fixture by upper mounted plate, middle fixing head and bottom plate, described pressure transducer is fixed on upper mounted plate, and described liquid capsule assembly is fixed between middle fixing head and bottom plate.By the fixed cell of so design, only middle fixing head need be separated with bottom plate, i.e. replaceable liquid capsule assembly.
Fixed plate, can adopt between middle fixing head and bottom plate any feasible connected mode realize removably connect.The scheme of indefiniteness has:
Fixed plate, middle fixing head and bottom plate by run through be bolted to together with, and when withdrawing from bolt, described bottom plate can be separated with middle fixing head and liquid capsule assembly is removed;
Between fixed plate with middle fixing head, middle fixing head is connected respectively by buckling piece with between bottom plate, and when removing withholding between described middle fixing head and bottom plate, described bottom plate can be separated with middle fixing head and liquid capsule assembly is removed.
On such scheme basis, present invention also offers a kind of transmission for urine pressure in bladder, sensing device, described sensing device comprises the transmission of catheter, urinary drainage bag and aforementioned liquids low pressure pressure, sensing device, in the urinary drainage bag displacement interface that this liquid low pressure transmits, the liquid stream incoming interface of the liquid capsule assembly of sensing device inserts catheter, liquid stream outgoing interface then inserts the drainage tube of urinary drainage bag.
In clinical practice, the urine drainage interface of catheter is inserted patient's bladder, make patient's bladder, between liquid blister cavities body and urinary drainage bag, form an airtight chamber, pressure transducer provides the pressure in this chamber by the piezometric surface of liquid blister cavities body, this result reflects the intravesical urine pressure of patient, the monitoring to patient's urinary tract system can be realized accordingly, as the foundation for the treatment of.
Human bladder can be described as a special cavity volume, checkout gear for obtaining liquid pressure in it provided by the invention, preferred described liquid blister cavities body is the gauge pressure pressure values of 0kpa-10kpa as the cyst wall transmission of piezometric surface and sensing pressures scope, and makes the repeatability error of described pressure values be not more than 0.2kpa.
So, invention further provides a kind of method detecting intravesical urine pressure, adopt liquid low pressure of the present invention transmission, sensing device, inserted by the liquid stream incoming interface of liquid capsule assembly in the urinary drainage bag displacement interface of catheter, liquid stream outgoing interface inserts in the drainage tube of urinary drainage bag.Make bladder by catheter, between liquid blister cavities body and urinary drainage bag, form an airtight chamber, obtain urine pressure bladder from pressure transducer.
To sum up, beneficial effect of the present invention can be summarized as follows:
Liquid low pressure provided by the invention transmits, sensing device, by the setting of liquid capsule assembly and pressure transducer, when forming with liquid storage cylinder bodies such as such as bladders the enclosed space be communicated with, liquid pressure in described liquid storage cavity can be embodied by the pressure information of liquid blister cavities body, namely, liquid pressure in liquid storage cavity is passed to pressure transducer by liquid blister cavities body, when being communicated with bladder, the liquid capsule cavity internal pressure obtained by pressure transducer just can reflect and provide intravesical urine pressure information, and without the need to directly measuring intravesical urine pressure again;
With the setting of the liquid capsule assembly of chamber conducting to be measured, pressure transducer does not need directly to contact with liquid, and sensor element of need not worrying easily pollutes and damages, and the replacement frequency of sensor can significantly reduce, and operation and use cost decline;
During clinical monitoring for patient's urinary tract system, only have liquid capsule assembly and urine contact, can realize detecting with urine contact without the need to sensor probe being stretched in patient body, change together with liquid capsule assembly when changing the liquid conduits such as urinary catheter, can hygienic requirements be ensured like this, avoid the problems such as bacteriological infection, and for the relatively high device of this cost of pressure transducer, reduction use cost can be reused, reduce medical apparatus and instruments resource loss;
Device of the present invention is used for detection and the monitoring of patient's urinary tract system, more convenient to operate, and also cost is low, is also beneficial to the misery reducing patient.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1 shows that the kind liquid pressure sensing device structural representation of the embodiment of the present invention;
Figure 2 shows that the structural representation of liquid capsule assembly in the embodiment of the present invention;
Figure 3 shows that another structural representation of liquid capsule assembly in the embodiment of the present invention;
Fig. 4 A is depicted as the exploded view of liquid pressure sensing device in one embodiment of the present of invention;
Fig. 4 B and Fig. 4 C is respectively the top view (A to B to) of upper mounted plate in Fig. 4 A, middle fixed plate structure;
Fig. 4 D is the upward view (C to) of bottom plate structure in Fig. 4 A;
Figure 5 shows that the embodiment of the present invention changes the repeatability error schematic diagram of liquid capsule assembly.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The liquid low pressure being illustrated in figure 1 the embodiment of the present invention transmits, sensing device structural representation.
See Fig. 1 and Fig. 2, the composition of this liquid low pressure transmission, sensing device comprises pressure transducer 101, liquid capsule assembly 102, fixed cell 103.Described liquid capsule assembly 102 two ends are respectively liquid stream incoming interface 201 and liquid stream outgoing interface 202 (according to service condition, the two can exchange), be respectively used to connecting fluid body canal, make liquid can flow into the cavity of described liquid capsule assembly 102 from the liquid stream incoming interface of described liquid capsule assembly 102, then flow out from the liquid stream outgoing interface of described liquid capsule assembly 102.
The middle part of liquid capsule assembly 102 is liquid blister cavities body 204 (see Fig. 2), the pressure-sensitive face of described pressure transducer 101 fully contacts with the cyst wall of the piezometric surface (also claiming work surface) of described liquid blister cavities body, and the exposure level of the two obtains so that pressure transducer can be made to stablize and transmits liquid pressure data stable in described liquid capsule assembly 102 cavity.For liquid blister cavities body 204, can be certain side cyst wall for pasting with the pressure-sensitive face of sensor 101 piezometric surface touched, also can be a part for side cyst wall, or can also be a few sides cyst walls.
Described pressure transducer 101 and described liquid capsule assembly 102 are removably fixed by described fixed cell 103.Preferred scheme is, fixed cell 103 wraps up except as the described liquid blister cavities body except the cyst wall of piezometric surface, makes liquid capsule assembly 102 can firmly be realized the detection of pressure.
As Fig. 1, described fixed cell 103 can also have a shell 104, described pressure transducer 101 can be placed in described shell 104, play the effect of protection pressure transducer 101.
Be illustrated in figure 2 the structural representation of liquid capsule assembly in the embodiment of the present invention, described liquid capsule assembly 102 comprises, liquid stream incoming interface 201, liquid stream outgoing interface 202, directional component 203, liquid blister cavities body 204.When described liquid stream incoming interface 201 is connected with liquid conduits respectively with liquid stream outgoing interface 202, liquid by liquid stream incoming interface 201 influent blister cavities body 204, then flows out described liquid capsule assembly by liquid stream outgoing interface 202.Described liquid flows into from liquid stream incoming interface 201, and the controlled valve of liquid stream outgoing interface 202 is when being closed, liquid blister cavities body 204 is full of by liquid gradually and oppresses cyst wall, because the piezometric surface cyst wall of liquid blister cavities body 204 fully contacts with pressure transducer pressure-sensitive face, liquid pressure is delivered to pressure transducer, and exports to relevant pressure monitor component in the mode of the signal of telecommunication.
Described liquid stream incoming interface 201 and liquid stream outgoing interface 202 can be arranged to have zigzag pressure inlet, as shown in the figure, the direction that the jagged inclined-plane of pressure inlet inserts towards described liquid conduits, when being communicated with liquid conduits, just contact with the medial wall of described liquid conduits and seal, thus described in being socketed on when liquid conduits, there is liquid stream incoming interface 201 or the liquid stream outgoing interface 202 of zigzag pressure inlet, can the connective stability of enhance liquid conduit and liquid stream incoming interface 201 or liquid stream outgoing interface 202.
The effect of directional component 203 is by coordinating with the card holding structure that fixed cell 103 is arranged, and makes liquid capsule assembly 102 really can be fixed and not produce axis or move radially or rotate, and then ensures the realization of detection, and is dropped to by detection error minimum.The concrete structure of this directional component and set-up mode can not be particularly limited, as long as can realize the stable of liquid capsule assembly.In the present embodiment, this directional component 203 can for being arranged on liquid capsule assembly liquid stream incoming interface 201 and/or at least one projection between liquid stream outgoing interface 202 and liquid blister cavities body 204, as shown in Figures 2 and 3, this directional component 203 can be the projection 203 of cuboid, described fixed cell 103 and this protruding opposite position then have the groove of cuboid, when fixed cell is implemented fixing to liquid capsule assembly and hydrostatic sensor, this groove just realizes holding to protruding 203, make described liquid capsule assembly 102 in described fixed cell 103 without rocking, reduce metrical error.
More than describe and be only a kind of embodiment, when utilizing fixed cell to implement fixing to liquid capsule assembly and pressure transducer, as required, by any feasible means, such as, can change above embodiment, directional component is arranged at fixed cell, card holding structure then correspondence is located on liquid capsule assembly, can be the combination of above-mentioned projection and groove, also can be other forms of inlay card combination etc.
Under the effect of fixed cell, described liquid blister cavities body 204 fully contacts with the pressure-sensitive face of described pressure transducer 101 as the cyst wall of piezometric surface, passes to described pressure transducer 101 to ensure that liquid pressure in liquid capsule is substantially break-even.For reducing the loss of pressure in transmittance process, this liquid blister cavities body 204 adopts latex or silica gel material to make, or be at least adopt latex or silica gel material to make as the cyst wall of piezometric surface, the wall thickness (also can be the wall thickness of whole liquid blister cavities body) of piezometric surface controls be not more than 0.3mm, such as about 0.1mm to 0.2mm, with avoid or be reduced in transmission and sensing compared with deviation during low pressure.The present invention's said " low pressure " generally refers to 0-10kpa, and when for urinary tract system (bladder) pressure detecting, more preferably can accurately transmit with sensing pressures normal range is 0kpa-6kpa (about 0cmH
2o-60cmH
2o) gauge pressure pressure values (all in gauge pressure in the present invention), now also can claim minute-pressure pressure.Certainly, as purposes needs, can also transmit, sensing pressures scope can reach 0kpa-10kpa (about 0cmH
2o-100cmH
2o) gauge pressure pressure values.Survey liquid pressure value repeatability error be not more than 0.2kpa (about 2cmH
2o).As shown in Figure 5, in this figure, abscissa is water-column device being applied to pressure, and vertical coordinate is the output voltage (mv) of sensor, from 2kpa-4kpa (i.e. 20cmH
2o-40cmH
2o) at interval of 0.2kpa (i.e. 2cmH
2o) record output voltage, draw curve, change three groups of liquid capsule assemblies and test, draw curve respectively.As an example, the repeatability error α of the liquid capsule inter-module when output voltage 2.7mv is shown in Fig. 5, α < 0.2kpa (i.e. 2cmH can have been found out
2o), easily find out, under other output voltage, the repeatability error of each group liquid capsule inter-module is also within the scope of this.
The shape of liquid blister cavities body 204 can be square in the present embodiment, also can be cylinder, the various shape such as spheroid, but liquid blister cavities body 204 fully should be able to contact with the pressure-sensitive face of pressure transducer 101 as the cyst wall of work surface, or the cyst wall of this liquid blister cavities body 204 can with described liquid stream incoming interface 201 and liquid stream outgoing interface 202 in same plane, namely as shown in Figure 3, whole liquid capsule assembly is a pipeline.
The sensing device of liquid pressure described in the embodiment of the present invention especially may be used for the transmission sensing device of human body intravesical urine pressure, can be connected with the urethral catheterization system of Clinical practice.Described urethral catheterization system can be any structure of Clinical practice, generally include catheter and the urinary drainage bag of mutual conduction, the two ends of catheter are urine drainage interface and urinary drainage bag displacement interface respectively, inserted by the liquid stream incoming interface 201 of described liquid capsule assembly during use in the urinary drainage bag displacement interface of catheter, the liquid stream outgoing interface 202 of liquid capsule assembly then inserts
in clinical practice, the urine drainage interface of catheter is inserted patient's bladder, make patient's bladder, between liquid blister cavities body and urinary drainage bag, form an airtight chamber, the urine flow that bladder produces is to urinary drainage bag (being commonly called as urinal), in this process, liquid blister cavities body 204 holds a certain amount of urine, and the pressure of urine in cavity is passed to by piezometric surface be affixed tactile pressure transducer 101, thus the intravesical pressure of (transmission) patient can be exported, realize the monitoring to patient's urinary tract system, for the determination of clinical monitoring and therapeutic scheme provides foundation.When needs change urinal or catheter, liquid capsule assembly can be changed together.Due to liquid capsule assembly, to prevent between urine with pressure transducer 101 pressure-sensitive part direct contacts, and pressure transducer 101 can be reused, thus reduces the cost of clinical monitoring and treatment.
The liquid pressure being illustrated in figure 4 one embodiment of the present of invention transmits the STRUCTURE DECOMPOSITION figure of sensing device, can be identical with above embodiment scheme, comprise pressure transducer 401, liquid capsule assembly 405 and fixed cell, the present embodiment, fixed cell comprises stacked upper mounted plate 402 (being the sectional view of upper mounted plate shown in Fig. 4) from top to bottom, middle fixing head 403 (being the sectional view of middle fixing head shown in Fig. 4), bottom plate 404 (being the sectional view of bottom plate shown in Fig. 4), pressure transducer 401 is arranged in upper mounted plate 402, liquid capsule assembly 405 is fixed jointly by middle fixing head 403 and bottom plate 404, and piezometric surface cyst wall can reach with the pressure-sensitive face of pressure transducer 401 and fully contacts.
Composition graphs 4B-Fig. 4 D; upper mounted plate 402 central area offers the through hole 4022 for hold pressure unit 401; periphery is also provided with multiple fixed bolt hole 4021, upper mounted plate and shell 104 can be fixed by fixed bolt hole 4021, to protect pressure transducer 401.The side of upper mounted plate 402 is also provided with a bolt hole 4024, is screwed into this bolt hole by respective bolt, holds out against fixing by pressure transducer 401 and upper mounted plate 402.The appropriate area of upper mounted plate 402 is also provided with connecting hole 4023, on middle fixing head 403 and bottom plate 404 side in opposite directions, correspondence is provided with the through hole 4032 and room 4042 that can hold liquid blister cavities body, and the groove 4031 and 4041 corresponded to as the projection 203 of directional component, the connecting hole 4023 middle fixing head 403 and bottom plate 404 also corresponding respectively to upper mounted plate offers connecting hole 4033 and 4043, by middle fixing head 403 with bottom plate 404 corresponding matching and after assembling with upper mounted plate 402, liquid capsule assembly is just made to be wrapped fixing, as directional component, this projection 203 is fastened in groove 4031 and 4041 just, the piezometric surface of liquid blister cavities body is then fully contacted by the pressure-sensitive face of through hole 4032 with pressure transducer 401, bolt is utilized to pass relative connecting hole 4023, 4033 and 4043, make, in, bottom plate is fixed to one, liquid capsule assembly and pressure transducer are fixed.
When withdrawing from bolt, described bottom plate 404 is separated with middle fixing head 403, and liquid capsule assembly can be removed to be changed, and changes complete when needing to detect next time, new liquid capsule assembly and former pressure transducer is combined in the manner described above.
Upper mounted plate 402, middle fixing head 403 and bottom plate 404 also can be connected by buckling piece or other feasible mode in other embodiments.Such as on upper mounted plate 402, middle fixing head 403 and bottom plate 404, have buckling piece respectively, upper mounted plate 402 is fixed by buckling piece and middle fixing head 403, and described middle fixing head 403 is fixed by buckling piece and bottom plate 404.On each fixing head, fixing or accommodating sensor can be identical with the vibrational power flow of liquid capsule assembly, no longer repeat specification.
By the above-mentioned setting utilizing upper mounted plate, middle fixing head and bottom plate, described pressure transducer and liquid capsule assembly more effectively can assemble and be convenient to install and remove; And fixed cell wraps up the non-working surface of liquid blister cavities body well, and is fully contacted with the pressure-sensitive face of pressure transducer in liquid blister cavities body running face, and the liquid pressure free of losses realized in liquid blister cavities body is delivered to described pressure transducer; In addition, can also pressure transducer be realized, fixed cell is reused, that is, in using or when replacing patient uses, only change liquid capsule assembly, such structural design, not only reduce the consume of medical apparatus and instruments resource, and reduction use cost, more can simplify doctors and patients' operation, person easy to use.
Realization of the present invention, insulating liquid blister cavities body and pressure transducer can be passed through, the liquid conduits such as urinary catheter can be changed together with liquid capsule assembly, can avoid antibacterial may to the infection of human body like this, simultaneously because reusing most of parts such as pressure transducer, and reduce use cost, reduce resource consume.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to restriction protection scope of the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (21)
1. for transmission, the sensing device of urine pressure in bladder, it is characterized in that, the described transmission for urine pressure in bladder, sensing device comprise the transmission of catheter, urinary drainage bag and liquid low pressure, sensing device, wherein,
The transmission of described liquid low pressure, sensing device comprise: liquid capsule assembly, pressure transducer, fixed cell;
Described liquid capsule assembly comprises liquid stream incoming interface, liquid stream outgoing interface and liquid blister cavities body, described liquid stream incoming interface and liquid stream outgoing interface are respectively used to be connected with liquid conduits, make liquid by described liquid stream incoming interface influent blister cavities body, and flow out described liquid capsule assembly by described liquid stream outgoing interface;
The pressure-sensitive face of pressure transducer fully contacts with the cyst wall of described liquid blister cavities body as piezometric surface, with make pressure transducer can obtain and transmission fluid capsule in liquid pressure;
Described pressure transducer and described liquid capsule assembly are removably fixed by fixed cell;
In the urinary drainage bag displacement interface that this liquid low pressure transmits, the liquid stream incoming interface of the liquid capsule assembly of sensing device inserts catheter, liquid stream outgoing interface then inserts the drainage tube of urinary drainage bag.
2. the transmission for urine pressure in bladder according to claim 1, sensing device, is characterized in that, described liquid blister cavities body be at least that latex or silica gel material are formed as the cyst wall of piezometric surface.
3. the transmission for urine pressure in bladder according to claim 1, sensing device, it is characterized in that, liquid stream incoming interface and the liquid stream outgoing interface of described liquid capsule assembly are zigzag pressure inlets, the direction that the sawtooth inclined-plane of described pressure inlet connects towards described liquid conduits.
4. the transmission for urine pressure in bladder according to claim 1, sensing device, it is characterized in that, the liquid stream incoming interface of described liquid capsule assembly and/or also there is directional component respectively between liquid stream outgoing interface and liquid blister cavities body, correspond to this directional component in described fixed cell and be provided with catch mechanism, axis can not be produced or move radially or rotate when described liquid capsule assembly is fixed in fixed cell.
5. the transmission for urine pressure in bladder according to claim 4, sensing device, is characterized in that, described directional component is that at least one is protruding, and described catch mechanism is the groove matched with described projection.
6. the transmission for urine pressure in bladder according to claim 1 or 4, sensing device, is characterized in that, the liquid blister cavities body of described pressure transducer and at least liquid capsule assembly is embedded in fixed cell.
7. the transmission for urine pressure in bladder according to claim 6, sensing device, is characterized in that, the part of liquid blister cavities body except the piezometric surface unit that is all fixed wrapped up.
8. the transmission for urine pressure in bladder according to any one of claim 1-4, sensing device, it is characterized in that, described fixed cell is stacked and formed so that demountable structure is affixed by fixture by upper mounted plate, middle fixing head and bottom plate, described pressure transducer is fixed on upper mounted plate, and described liquid capsule assembly is fixed between middle fixing head and bottom plate.
9. the transmission for urine pressure in bladder according to claim 8, sensing device, it is characterized in that, fixed plate, middle fixing head and bottom plate by run through be bolted to together with, and when withdrawing from bolt, described bottom plate can be separated with middle fixing head and make liquid capsule assembly be removed.
10. the transmission for urine pressure in bladder according to claim 8, sensing device, it is characterized in that, between fixed plate with middle fixing head, middle fixing head is connected respectively by buckling piece with between bottom plate, when removing withholding between described middle fixing head and bottom plate, described bottom plate can be separated with middle fixing head and liquid capsule assembly is removed.
11. transmission for urine pressure in bladder according to claim 1, sensing device, it is characterized in that, described liquid blister cavities body is the gauge pressure pressure values of 0kpa-10kpa as the cyst wall transmission of piezometric surface and sensing pressures scope, and makes the error of described pressure values be not more than 0.2kpa.
12. 1 kinds of methods detecting urine pressure in bladder, is characterized in that, adopt that liquid low pressure transmits, sensing device, and it comprises: liquid capsule assembly, pressure transducer, fixed cell, wherein,
Described liquid capsule assembly comprises liquid stream incoming interface, liquid stream outgoing interface and liquid blister cavities body, described liquid stream incoming interface and liquid stream outgoing interface are respectively used to be connected with liquid conduits, make liquid by described liquid stream incoming interface influent blister cavities body, and flow out described liquid capsule assembly by described liquid stream outgoing interface;
The pressure-sensitive face of pressure transducer fully contacts with the cyst wall of described liquid blister cavities body as piezometric surface, with make pressure transducer can obtain and transmission fluid capsule in liquid pressure;
Described pressure transducer and described liquid capsule assembly are removably fixed by fixed cell;
Described method is the liquid stream incoming interface of liquid capsule assembly is inserted the urinary drainage bag displacement interface of catheter, the liquid stream outgoing interface of liquid capsule assembly inserts the drainage tube of urinary drainage bag, make bladder by catheter, between liquid blister cavities body and urinary drainage bag, form an airtight chamber, obtain urine pressure bladder from pressure transducer.
In 13. detection bladders according to claim 12, the method for urine pressure, is characterized in that, described liquid blister cavities body be at least that latex or silica gel material are formed as the cyst wall of piezometric surface.
The method of urine pressure in 14. detection bladders according to claim 12, it is characterized in that, liquid stream incoming interface and the liquid stream outgoing interface of described liquid capsule assembly are zigzag pressure inlets, the direction that the sawtooth inclined-plane of described pressure inlet connects towards described liquid conduits.
The method of urine pressure in 15. detection bladders according to claim 12, it is characterized in that, the liquid stream incoming interface of described liquid capsule assembly and/or also there is directional component respectively between liquid stream outgoing interface and liquid blister cavities body, correspond to this directional component in described fixed cell and be provided with catch mechanism, axis can not be produced or move radially or rotate when described liquid capsule assembly is fixed in fixed cell.
In 16. detection bladders according to claim 15, the method for urine pressure, is characterized in that, described directional component is that at least one is protruding, and described catch mechanism is the groove matched with described projection.
The method of urine pressure in 17. detection bladders according to claim 12 or 15, it is characterized in that, the liquid blister cavities body of described pressure transducer and at least liquid capsule assembly is embedded in fixed cell.
In 18. detection bladders according to claim 17, the method for urine pressure, is characterized in that, the part of liquid blister cavities body except the piezometric surface unit that is all fixed wrapped up.
The method of urine pressure in 19. detection bladders according to any one of claim 12-15, it is characterized in that, described fixed cell is stacked and formed so that demountable structure is affixed by fixture by upper mounted plate, middle fixing head and bottom plate, described pressure transducer is fixed on upper mounted plate, and described liquid capsule assembly is fixed between middle fixing head and bottom plate.
The method of urine pressure in 20. detection bladders according to claim 19, it is characterized in that, fixed plate, middle fixing head and bottom plate by run through be bolted to together with, and when withdrawing from bolt, described bottom plate can be separated with middle fixing head and liquid capsule assembly is removed.
The method of urine pressure in 21. detection bladders according to claim 19, it is characterized in that, between fixed plate with middle fixing head, middle fixing head is connected respectively by buckling piece with between bottom plate, when removing withholding between described middle fixing head and bottom plate, described bottom plate can be separated with middle fixing head and liquid capsule assembly is removed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210077393.7A CN103070679B (en) | 2011-10-26 | 2012-03-22 | The detection method that the transmission of liquid low pressure, sensing device and urinary urine bladder hydraulic pressure are strong |
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| CN201110328820 | 2011-10-26 | ||
| CN201110328820.X | 2011-10-26 | ||
| CN201210077393.7A CN103070679B (en) | 2011-10-26 | 2012-03-22 | The detection method that the transmission of liquid low pressure, sensing device and urinary urine bladder hydraulic pressure are strong |
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| CN103070679A CN103070679A (en) | 2013-05-01 |
| CN103070679B true CN103070679B (en) | 2016-01-13 |
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| CN 201220110363 Expired - Lifetime CN202619647U (en) | 2011-10-26 | 2012-03-22 | Liquid low pressure transmission and sensing device and pressure transmission and sensing device for urine in bladder |
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| CN 201220110363 Expired - Lifetime CN202619647U (en) | 2011-10-26 | 2012-03-22 | Liquid low pressure transmission and sensing device and pressure transmission and sensing device for urine in bladder |
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| CN103070679B (en) * | 2011-10-26 | 2016-01-13 | 李铁林 | The detection method that the transmission of liquid low pressure, sensing device and urinary urine bladder hydraulic pressure are strong |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684245A (en) * | 1995-11-17 | 1997-11-04 | Mks Instruments, Inc. | Apparatus for mass flow measurement of a gas |
| US5722399A (en) * | 1994-09-14 | 1998-03-03 | Hospal Industrie | Device for measuring the pressure of a liquid and method for regulating such a device |
| CN1987080A (en) * | 2006-12-20 | 2007-06-27 | 陈志林 | Intelligent electronic fuel pump |
| CN201426796Y (en) * | 2009-05-18 | 2010-03-24 | 天津工程师范学院 | Intelligent catheter |
| CN202619647U (en) * | 2011-10-26 | 2012-12-26 | 李铁林 | Liquid low pressure transmission and sensing device and pressure transmission and sensing device for urine in bladder |
-
2012
- 2012-03-22 CN CN201210077393.7A patent/CN103070679B/en not_active Expired - Fee Related
- 2012-03-22 CN CN 201220110363 patent/CN202619647U/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5722399A (en) * | 1994-09-14 | 1998-03-03 | Hospal Industrie | Device for measuring the pressure of a liquid and method for regulating such a device |
| US5684245A (en) * | 1995-11-17 | 1997-11-04 | Mks Instruments, Inc. | Apparatus for mass flow measurement of a gas |
| CN1987080A (en) * | 2006-12-20 | 2007-06-27 | 陈志林 | Intelligent electronic fuel pump |
| CN201426796Y (en) * | 2009-05-18 | 2010-03-24 | 天津工程师范学院 | Intelligent catheter |
| CN202619647U (en) * | 2011-10-26 | 2012-12-26 | 李铁林 | Liquid low pressure transmission and sensing device and pressure transmission and sensing device for urine in bladder |
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|---|---|
| CN202619647U (en) | 2012-12-26 |
| CN103070679A (en) | 2013-05-01 |
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