CN103070679A - Liquid low pressure transferring and sensing device and detection method of bladder urine pressure - Google Patents
Liquid low pressure transferring and sensing device and detection method of bladder urine pressure Download PDFInfo
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- CN103070679A CN103070679A CN2012100773937A CN201210077393A CN103070679A CN 103070679 A CN103070679 A CN 103070679A CN 2012100773937 A CN2012100773937 A CN 2012100773937A CN 201210077393 A CN201210077393 A CN 201210077393A CN 103070679 A CN103070679 A CN 103070679A
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- 230000002485 urinary effect Effects 0.000 claims abstract description 25
- 239000002775 capsule Substances 0.000 claims description 83
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- 208000031513 cyst Diseases 0.000 claims description 18
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
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- 230000036724 intravesical pressure Effects 0.000 description 3
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Abstract
The invention relates to a liquid low pressure transferring and sensing device and a detection method of bladder urine pressure. The liquid low pressure transferring and sensing device comprises a sac assembly, a pressure sensor and a fixing unit, wherein the sac assembly comprises a liquid inlet interface, a liquid outlet interface and a sac cavity body, and the liquid inlet interface and the liquid outlet interface are respectively connected with a liquid pipe, so that a liquid flows into the sac cavity body through the liquid inlet interface and flows out of the sac assembly through the liquid outlet interface; the sensing surface of the pressure sensor fully comes into contact with a sac wall as the pressure measuring surface of the sac cavity body, so that the pressure sensor can obtain and transfer pressure data of the liquid in the sac cavity body; and the fixing unit is used for removably fixing the pressure sensor and the sac assembly. The liquid low pressure transferring and sensing device and the detection method of the bladder urine pressure are used for monitoring a urinary system of a human body. Because a pressure sensing component of the sensor does not directly come into contact with urine, and only the sac assembly needs to be replaced as required during use, the loss of medical appliance resources is reduced.
Description
Technical field
The invention relates to a kind of liquid low pressure pressure transmission, 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 that dysuria is arranged, if urine storage phase intravesical pressure is insisted on the continuous 40cm/H of surpassing
2O, the phase of urinating continues to surpass 60cm/H
2O, the duration reaches person more than a year, and renal function 100% can suffer damage.And reinforcement is accomplished low voltage-controlled urine and control infection will greatly reduce the possibility that severe complication appears in urinary system to monitoring and the processing of urinary tract system.This is being taked in the corresponding measure, the very important point is the mensuration to intravesical urine pressure (by force), and urine storage phase intravesical pressure reaches 40cm/H
2Corresponding bladder capacity is " comparatively safe bladder capacity " during O, just can reach the purpose of protection bladder structure and function even renal function protecting in this range of capacity.
In the prior art detection of liquid pressure in the human body is still far from perfect, main by the liquid pressure in the electronic product human body such as pressure transducer, the common cost of this series products that the working pressure sensor consists of is higher, and need pressure transducer directly to contact ability tracer liquid pressure with liquid, in order to prevent from infecting the requirement with health, this pressure transducer needs often to change, also can not its usefulness of many people, be a kind of very large loss as medical apparatus and instruments in clinical practice, so just more be difficult to clinically widespread adoption and popularization.
Summary of the invention
The invention provides that a kind of liquid low pressure pressure transmits, sensing device, be used for solving the too problem of loss of the high and medical apparatus and instruments resource of prior art liquid pressure sensing device replacement cost.
The present invention also provides a kind of sensing device that detects urine pressure in the bladder, the transmission of described liquid low pressure pressure, sensing device are combined with the urinary catheter systems of clinical use, can when realization is monitored at any time to bladder pressure, avoid sensor directly to contact urine and cause the high problem of sensing device replacement cost.
The present invention also provides a kind of method that detects urine pressure in the bladder, the transmission of described liquid low pressure pressure, sensing device are combined with the urinary catheter systems of clinical use, when can obtain intravesical urine pressure information, avoided sensor directly to contact urine and cause the high problem of sensing device replacement cost.
The invention provides a kind of liquid low pressure pressure transmission, sensing device, it comprises:
Liquid capsule assembly, pressure transducer, fixed cell;
Described liquid capsule assembly comprises that liquid flows into interface, liquid flows out interface and liquid blister cavities body, described liquid flows into interface and is respectively applied to be connected with liquid conduits with liquid outflow interface, make liquid pass through described liquid and flow into interface influent blister cavities body, and flow out described liquid capsule assembly by described liquid outflow interface;
The pressure-sensitive face of pressure transducer fully contacts with the cyst wall of described liquid blister cavities body as piezometric surface, so that pressure transducer can obtain and transmit the pressure data of liquid in the described liquid blister cavities body;
Fixed cell is removably fixing with described pressure transducer and described liquid capsule assembly.Like this, pressure transducer and described liquid capsule assembled can be fixed together, and can be convenient to loading and unloading.
According to liquid low pressure 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, make this cavity volume to be measured and liquid blister cavities bulk phase logical, liquid pressure in the liquid blister cavities body that just can provide by sensor, know the pressure in the cavity volume to be measured, and, detachable between liquid capsule assembly and the sensor, can use easily and change parts.Urethral catheterization system in combination with liquid low pressure pressure of the present invention transmission, sensing device and clinical use, namely, liquid capsule assembly and bladder are conducted, can for detection of with the bladder of monitored patient in urine pressure, thereby facilitate and help for relevant disease patient's diagnosis and treatment.
According to liquid low pressure pressure provided by the invention transmit, sensing device, preferably, described liquid blister cavities body be that latex or silica gel material consist of as the cyst wall of piezometric surface at least.That is, liquid blister cavities body preferably adopts the thin-wall construction of elastomeric material, is more conducive to sensor to than the obtaining of low pressure, and for example, selects to be used for liquid blister cavities body and is not more than 0.3 millimeter as the wall thickness of piezometric surface.
According to liquid low pressure pressure transmission provided by the invention, sensing device, the described liquid of described liquid capsule assembly flows into interface and liquid outflow interface is the zigzag pressure inlet, the direction that the sawtooth inclined-plane of described pressure inlet inserts towards described liquid conduits.The adapter that has broached-tooth design described in the application is more conducive to and contacts with the medial wall of liquid conduits, and for example, catheter is generally the latex flexible pipe, and the broached-tooth design of interface outer wall well docile is realized the airtight connection of system in the catheter inwall.
According to liquid low pressure pressure transmission provided by the invention, sensing device, the liquid of described liquid capsule assembly flows between interface and/or liquid outflow interface and the liquid blister cavities body also has respectively directional component, be provided with catch mechanism corresponding to this directional component in the described fixed cell, can not produce when making described liquid capsule assembly be fixed in the fixed cell axially or move radially or rotate.Namely, by this directional component, be more conducive to liquid capsule assembly fixing in fixed cell, thereby guarantee the abundant applying of liquid capsule piezometric surface and sensor pressure-sensitive face in the testing process, in specific embodiments, described directional component can be at least one projection, and described catch mechanism then is the groove of the fixed cell that matches with described projection.When fixed cell is connected with pressure transducer when connecting liquid capsule assembly, mutually the holding of the projection on the liquid capsule assembly and the groove on the fixed cell makes liquid capsule assembly that the movement of all directions/rotation can not occur, thereby obtains stable pressure data.
According to the solution of the present invention, described pressure transducer and at least the liquid blister cavities body of liquid capsule assembly be embedded in the fixed cell, more preferably the part of liquid blister cavities body except the piezometric surface unit that all is fixed wraps up.
Embodiment according to liquid low pressure pressure transmission of the present invention, sensing device, described fixed cell is by upper mounted plate, middle fixing head and bottom plate is stacked and form so that demountable structure is affixed by fixture, described pressure transducer is fixed in upper mounted plate, and described liquid capsule assembly is fixed between middle fixing head and the bottom plate.By the fixed cell of design like this, only need middle fixing head is separated with bottom plate, i.e. replaceable liquid capsule assembly.
Can adopt any feasible connected mode to realize removably connecting between fixed plate, middle fixing head and the bottom plate.The scheme of indefiniteness has:
Fixed plate, middle fixing head and bottom plate are by being bolted to together of running through, and when withdrawing from bolt, described bottom plate can separate with middle fixing head and liquid capsule assembly is removed;
Between fixed plate and the middle fixing head, be connected by buckling piece respectively between middle fixing head and the bottom plate, when removing withholding between described middle fixing head and the bottom plate, described bottom plate can separate with middle fixing head and liquid capsule assembly is removed.
On the such scheme basis, the present invention also provides a kind of transmission for bladder urine pressure, sensing device, described sensing device comprises that catheter, urinary drainage bag and aforementioned liquids low pressure pressure transmit, sensing device, in the urinary drainage bag displacement interface that this liquid low pressure pressure transmits, the liquid of the liquid capsule assembly of sensing device flows into interface insertion catheter, liquid flows out the drainage tube that interface then inserts urinary drainage bag.
In clinical practice, the urine drainage interface of catheter is inserted patient's bladder, make and form an airtight chamber between patient's bladder, liquid blister cavities body and the urinary drainage bag, the piezometric surface of pressure transducer by liquid blister cavities body provides the pressure in this chamber, this result has reflected patient's intravesical urine pressure, can realize accordingly the monitoring to patient's urinary tract system, as the foundation for the treatment of.
The human bladder can be described as a special cavity volume, checkout gear be used to obtaining liquid pressure in it provided by the invention, the gauge pressure pressure values that preferred described liquid blister cavities body is 0kpa-10kpa as cyst wall transmission and the sensing pressure range of piezometric surface, and make the repeatability error of described pressure values be not more than 0.2kpa.
So, the present invention further provides a kind of method that detects intravesical urine pressure, adopt liquid low pressure pressure transmission of the present invention, sensing device, the liquid of liquid capsule assembly is flowed in the urinary drainage bag displacement interface of interface insertion catheter, and liquid flows out interface and inserts in the drainage tube of urinary drainage bag.Make airtight chamber of formation between bladder, liquid blister cavities body and the urinary drainage bag by catheter, obtain urine pressure the bladder from pressure transducer.
To sum up, beneficial effect of the present invention can be summarized as follows:
Liquid low pressure pressure provided by the invention transmits, sensing device, setting by liquid capsule assembly and pressure transducer, when when forming the enclosed space be communicated with such as liquid storage cylinder bodies such as bladders, liquid pressure in the described liquid storage cavity can embody by the pressure information of liquid blister cavities body, namely, liquid pressure in the liquid storage cavity is passed to pressure transducer by liquid blister cavities body, when being communicated with bladder, the liquid blister cavities body internal pressure that obtains by pressure transducer just can reflect and provide intravesical urine pressure information, and need not directly to measure 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 the sensor element of needn't worrying easily pollutes and damages, and the replacement frequency of sensor can significantly reduce, operation and use cost decline;
When being used for the clinical monitoring of patient's urinary tract system, only have liquid capsule assembly to contact with urine, need not sensor probe stretched in the patient body to contact with urine can realize detecting, when the liquid conduits such as replacing urinary catheter, change together with liquid capsule assembly, can guarantee hygienic requirements like this, avoid the problems such as antibacterial infection, and for the relatively high device of this cost of pressure transducer, can reuse the reduction use cost, reduce the 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, also is beneficial to the misery that reduces the patient.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1 shows that the kind liquid pressure sensing device structural representation of the embodiment of the invention;
Figure 2 shows that the structural representation of liquid capsule assembly in the embodiment of the invention;
Figure 3 shows that another structural representation of liquid capsule assembly in the embodiment of the 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 are respectively the top view (A to B to) of upper mounted plate, middle fixed plate structure among Fig. 4 A;
Fig. 4 D is the upward view (C to) of the bottom plate structure among Fig. 4 A;
Figure 5 shows that the repeatability error schematic diagram of embodiment of the invention replacing liquid capsule assembly.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The liquid low pressure pressure that is illustrated in figure 1 as the embodiment of the invention transmits, the sensing device structural representation.
Referring to Fig. 1 and Fig. 2, the composition of this liquid low pressure 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 inflow interface 201 and liquid flows out interface 202 (according to operating position, the two can exchange), be respectively applied to the connecting fluid body canal, so that liquid can flow into the cavity that interface flows into described liquid capsule assembly 102 from the liquid of described liquid capsule assembly 102, the liquid from described liquid capsule assembly 102 flows out the interface outflow again.
The middle part of liquid capsule assembly 102 is liquid blister cavities body 204 (referring to 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 is can make the stable acquisition of pressure transducer and to transmit stable liquid pressure data in described liquid capsule assembly 102 cavitys.For liquid blister cavities body 204, the piezometric surface that is used for touching with the pressure-sensitive face subsides of sensor 101 can be a certain side cyst wall, also can be the part of a side cyst wall, perhaps can also be a few side cyst walls.
Described fixed cell 103 is removably fixing with described pressure transducer 101 and described liquid capsule assembly 102.Preferred scheme is that fixed cell 103 parcels make liquid capsule assembly 102 can firmly be realized the detection of pressure except as the described liquid blister cavities body the cyst wall of piezometric surface.
Such as Fig. 1, on described fixed cell 103, can also have a shell 104, described pressure transducer 101 can be placed in the described shell 104, play the effect of protection pressure transducer 101.
Be illustrated in figure 2 as the structural representation of liquid capsule assembly in the embodiment of the invention, described liquid capsule assembly 102 comprises, liquid inflow interface 201, and liquid flows out interface 202, directional component 203, liquid blister cavities body 204.When described liquid inflow interface 201 was connected with liquid conduits respectively with liquid outflow interface 202, liquid flowed into interface 201 influent blister cavities bodies 204 by liquid, flowed out interface 202 by liquid again and flowed out described liquid capsule assembly.Described liquid flows into interface 201 from liquid and flows into, and liquid flows out the controlled valve of interface 202 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 flows into interface 201 and liquid outflow interface 202 can be arranged to have the 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, thereby described liquid with zigzag pressure inlet flows into interface 201 or liquid flows out interface 202 when liquid conduits is socketed on, and can the enhance liquid conduit flows into the connective stability of interface 201 or liquid outflow interface 202 with liquid.
The effect of directional component 203 is by cooperating with card holding structure that fixed cell 103 arranges, liquid capsule assembly 102 can be fixed really and not produce axially or moves radially or rotate, and then guarantee the realization of detection, and detection error is dropped to 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 be for being arranged at least one projection between liquid capsule assembly liquid inflow interface 201 and/or liquid outflow interface 202 and the liquid blister cavities body 204, as shown in Fig. 2 and Fig. 3, this directional component 203 can be the projection 203 of cuboid, described fixed cell 103 and this projection opposite position then have the groove of cuboid, when fixed cell is implemented fixedly to liquid capsule assembly and hydrostatic sensor, this groove is just realized holding to projection 203, so that described liquid capsule assembly 102 nothing in described fixed cell 103 is rocked, reduce to detect error.
Above description only is a kind of embodiment, when utilizing fixed cell to implement fixedly to liquid capsule assembly and pressure transducer, as required, can by any feasible means, for example, can change above embodiment, directional component is arranged at fixed cell, card holding structure then correspondence is located on the 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 guarantee that liquid pressure in the 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, perhaps be to make as cyst wall employing latex or the silica gel material of piezometric surface at least, the wall thickness of piezometric surface (also can be the wall thickness of whole liquid blister cavities body) is controlled at and is not more than 0.3mm, about 0.1mm to 0.2mm for example transmits and the deviation of sensing during than low pressure to avoid or to be reduced in.The present invention's said " low pressure " generally refers to 0-10kpa, and when being used for urinary tract system (bladder) pressure detecting, more preferably can accurately transmit with sensing pressure is 0kpa-6kpa (about 0cmH normal range
2O-60cmH
2O) gauge pressure pressure values (among the present invention all in gauge pressure), also can claim minute-pressure pressure this moment.Certainly, need such as purposes, can also transmit, the sensing pressure range can reach 0kpa-10kpa (about 0cmH
2O-100cmH
2O) gauge pressure pressure values.The repeatability error of the liquid pressure value of surveying is not more than 0.2kpa (about 2cmH
2O).As shown in Figure 5, abscissa is the water-column that device is applied pressure among this figure, and vertical coordinate is the output voltage (mv) of sensor, (is 20cmH from 2kpa-4kpa
2O-40cmH
2O) every interval 0.2kpa (is 2cmH
2O) the record output voltage draws curve, changes three groups of liquid capsule assemblies and tests, and draws respectively curve.As an example, the repeatability error α of liquid capsule inter-module when output voltage 2.7mv has been shown among Fig. 5, can have found out that α＜0.2kpa (is 2cmH
2O), easily find out, in the repeatability error of respectively organizing liquid capsule inter-module under other output voltage also in this scope.
The shape of liquid blister cavities body 204 can be square in the present embodiment, it also can be cylinder, the various shapes such as spheroid, but liquid blister cavities body 204 should be able to fully contact with the pressure-sensitive face of pressure transducer 101 as the cyst wall of work surface, perhaps the cyst wall of this liquid blister cavities body 204 can flow out interface 202 in same plane with described liquid inflow interface 201 and liquid, 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 invention especially can for detection of the transmission sensing device of urine pressure in the human bladder, can be connected with the urethral catheterization system of clinical use.Described urethral catheterization system can be any structure of clinical use, generally include catheter and the urinary drainage bag of mutual conduction, the two ends of catheter are respectively urine drainage interface and urinary drainage bag displacement interface, liquid with described liquid capsule assembly during use flows in the urinary drainage bag displacement interface of interface 201 insertion catheters, and the liquid of liquid capsule assembly flows out then insertion of interface 202
In clinical practice, the urine drainage interface of catheter is inserted patient's bladder, make and form an airtight chamber between patient's bladder, liquid blister cavities body and the urinary drainage bag, the urine flow that bladder produces is to urinary drainage bag (being commonly called as urinal), liquid blister cavities body 204 holds a certain amount of urine in this process, and the pressure of urine in the cavity passed to by piezometric surface be affixed tactile pressure transducer 101, thereby can export the intravesical pressure of (transmission) patient, realization is to the monitoring of patient's urinary tract system, determines to provide foundation for clinical monitoring and therapeutic scheme.When needs are changed urinal or catheter, liquid capsule assembly can be changed together.Because liquid capsule assembly has stoped direct contact the between urine and the pressure transducer 101 pressure-sensitive parts, pressure transducer 101 can be reused, thereby reduced the cost of clinical monitoring and treatment.
The liquid pressure that is illustrated in figure 4 as 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 the upper mounted plate 402, liquid capsule assembly 405 by in fixing head 403 and bottom plate 404 jointly fixing, and the piezometric surface cyst wall can reach fully with the pressure-sensitive face of pressure transducer 401 and contacts.
In conjunction with Fig. 4 B-Fig. 4 D; upper mounted plate 402 central areas offer the through hole 4022 for hold pressure unit 401; periphery also is provided with a plurality of fixed bolt holes 4021, can upper mounted plate and shell 104 is fixing by fixed bolt hole 4021, and with protection pressure transducer 401.One side of upper mounted plate 402 also is provided with a bolt hole 4024, is screwed into this bolt hole by respective bolt, holds out against pressure transducer 401 and upper mounted plate 402 fixing.The appropriate area of upper mounted plate 402 also is provided with connecting hole 4023; Corresponding through hole 4032 and the room 4042 that can hold liquid blister cavities body that be provided with on middle fixing head 403 and bottom plate 404 side in opposite directions, and corresponding to the groove 4031 and 4041 as the projection 203 of directional component, the connecting hole 4023 that also corresponds respectively to upper mounted plate on middle fixing head 403 and the bottom plate 404 offers connecting hole 4033 and 4043, with middle fixing head 403 and bottom plate 404 corresponding matching and with upper mounted plate 402 assemblings after, just make liquid capsule assembly 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 then fully contacts by the pressure-sensitive face of through hole 4032 with pressure transducer 401, utilize bolt to pass relative connecting hole 4023,4033 and 4043, make, in, bottom plate is fixed to one, and liquid capsule assembly and pressure transducer are fixed.
When withdrawing from bolt, described bottom plate 404 separates with middle fixing head 403, and liquid capsule assembly can be removed to be changed, and when changing complete needs and detecting next time, in the manner described above new liquid capsule assembly and the combination of former pressure transducer is got final product.
In other embodiments upper mounted plate 402, middle fixing head 403 are connected with bottom plate also can by buckling piece or other feasible mode connect.For example have respectively buckling piece on upper mounted plate 402, middle fixing head 403 and bottom plate 404, upper mounted plate 402 fixes by buckling piece and middle fixing head 403, and described middle fixing head 403 fixes by buckling piece and bottom plate 404.Fixing or accommodating sensor can be identical with the structure setting of liquid capsule assembly on each fixing head, no longer repeat specification.
By the above-mentioned setting that utilizes upper mounted plate, middle fixing head and bottom plate, described pressure transducer and liquid capsule assembly can more effectively assemble and be convenient to mounting or dismounting; And fixed cell wraps up the non-working surface of liquid blister cavities body well, and liquid blister cavities body running face is fully contacted with the pressure-sensitive face of pressure transducer, realizes that the liquid pressure free of losses in the liquid blister cavities body is delivered to described pressure transducer; In addition, can also realize that pressure transducer, fixed cell reuse, that is, and in the use or when changing patient and using, only change liquid capsule assembly, such structural design not only reduces the consume of medical apparatus and instruments resource, and the reduction use cost, more can simplify doctors and patients' operation, make things convenient for user.
Realization of the present invention, can pass through insulating liquid blister cavities body and pressure transducer, the liquid conduits such as urinary catheter can be changed together with liquid capsule assembly, can avoid like this antibacterial may be to the infection of human body, simultaneously because reusing most of parts such as pressure transducer, and the reduction use cost reduces the resource consume.
The above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is 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 modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
- A liquid low pressure pressure transmit, sensing device, it is characterized in that comprising:Liquid capsule assembly, pressure transducer, fixed cell;Described liquid capsule assembly comprises that liquid flows into interface, liquid flows out interface and liquid blister cavities body, described liquid flows into interface and is respectively applied to be connected with liquid conduits with liquid outflow interface, make liquid pass through described liquid and flow into interface influent blister cavities body, and flow out described liquid capsule assembly by described liquid outflow interface;The pressure-sensitive face of pressure transducer fully contacts with the cyst wall of described liquid blister cavities body as piezometric surface so that pressure transducer can obtain and the transmission fluid capsule in liquid pressure;Fixed cell is removably fixing with described pressure transducer and described liquid capsule assembly.
- 2. device according to claim 1 is characterized in that, described liquid blister cavities body be that latex or silica gel material consist of as the cyst wall of piezometric surface at least.
- 3. device according to claim 1 is characterized in that, the liquid of described liquid capsule assembly flows into interface and liquid outflow interface is the zigzag pressure inlet, the direction that the sawtooth inclined-plane of described pressure inlet connects towards described liquid conduits.
- 4. device according to claim 1, it is characterized in that, the liquid of described liquid capsule assembly flows between interface and/or liquid outflow interface and the liquid blister cavities body also has respectively directional component, be provided with catch mechanism corresponding to this directional component in the described fixed cell, can not produce when making described liquid capsule assembly be fixed in the fixed cell axially or move radially or rotate.
- 5. device according to claim 4 is characterized in that, described directional component is at least one projection, the groove of described catch mechanism for matching with described projection.
- 6. according to claim 1 or 4 described devices, it is characterized in that, described pressure transducer and at least the liquid blister cavities body of liquid capsule assembly be embedded in the fixed cell.
- 7. device according to claim 6 is characterized in that, the part of liquid blister cavities body except the piezometric surface unit that all is fixed wraps up.
- 8. each described device according to claim 1-4, it is characterized in that, described fixed cell is by upper mounted plate, middle fixing head and bottom plate is stacked and form so that demountable structure is affixed by fixture, described pressure transducer is fixed in upper mounted plate, and described liquid capsule assembly is fixed between middle fixing head and the bottom plate.
- 9. device according to claim 8 is characterized in that, fixed plate, middle fixing head and bottom plate are by being bolted to together of running through, and when withdrawing from bolt, described bottom plate can separate with middle fixing head and liquid capsule assembly is removed.
- 10. device according to claim 8, it is characterized in that, between fixed plate and the middle fixing head, be connected by buckling piece respectively between middle fixing head and the bottom plate, when removing withholding between described middle fixing head and the bottom plate, described bottom plate can separate with middle fixing head and liquid capsule assembly is removed.
- 11. transmission, sensing device that is used for bladder urine pressure, it is characterized in that, described sensing device comprises that each described liquid low pressure pressure of catheter, urinary drainage bag and claim 1-11 transmits, sensing device, in the urinary drainage bag displacement interface that this liquid low pressure pressure transmits, the liquid of the liquid capsule assembly of sensing device flows into interface insertion catheter, liquid flows out the drainage tube that interface then inserts urinary drainage bag.
- 12. device according to claim 11 is characterized in that, the gauge pressure pressure values that described liquid blister cavities body is 0kpa-10kpa as cyst wall transmission and the sensing pressure range of piezometric surface, and make the error of described pressure values be not more than 0.2kpa.
- 13. method that detects urine pressure in the bladder, it is characterized in that, adopt each described liquid low pressure pressure transmission of claim 1-10, sensing device, the liquid of liquid capsule assembly is flowed into the urinary drainage bag displacement interface that interface inserts catheter, the liquid of liquid capsule assembly flows out the drainage tube that interface inserts urinary drainage bag, make airtight chamber of formation between bladder, liquid blister cavities body and the urinary drainage bag by catheter, obtain urine pressure the bladder from pressure transducer.
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| 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 true CN103070679A (en) | 2013-05-01 |
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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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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 |
| CN103070679B (en) | 2016-01-13 |
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