CN110530540A - A kind of load mould for intrusive ultrasonic probe surface temperature measurement - Google Patents
A kind of load mould for intrusive ultrasonic probe surface temperature measurement Download PDFInfo
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- CN110530540A CN110530540A CN201810508599.8A CN201810508599A CN110530540A CN 110530540 A CN110530540 A CN 110530540A CN 201810508599 A CN201810508599 A CN 201810508599A CN 110530540 A CN110530540 A CN 110530540A
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 17
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 238000002604 ultrasonography Methods 0.000 claims description 7
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The present invention provides a kind of load mould (1) for intrusive ultrasonic probe surface temperature measurement, structure includes body mould shell, sound-heat imitative organization material (7) and retaining-plate (4)；Body mould shell is fixedly connected on retaining-plate (4), and filling sound-heat imitates organization material (7) in body mould shell；Body mould shell is cylindrical shape comprising: bottom plate (9), top panel (3), metallic cylinder (2) and accent sleeve (5) and intracavitary sound window (21)；The bottom plate (9) of body mould shell is fastened by the first bolt (10) and the second bolt (11) and retaining-plate (4)；It is provided with circular hole in the middle part of bottom plate (9), and the circular hole is blocked by closing rubber (12)；The top of metallic cylinder (2) is equipped with top panel (3), is equipped with accent sleeve (5) and intracavitary sound window (21) at the middle part circular hole of top panel (3)；Metallic cylinder inner wall side is pasted with sound absorption liner (8).
Description
Technical field
The present invention relates to medical instrument quality examination technical fields, and in particular to one kind is for intrusive ultrasonic probe surface
The load mould of temperature measurement.
Background technique
Medical ultrasound diagnostic-custodial care facility be via ultrasonic probe to human body appointed part transmitting certain frequency, intensity and
The ultrasonic wave of form is received, processing reflection-scatter echo signal, people is then shown in the form of image, figure, number, sound etc.
The physiology and pathological information at the body position, to be judged to the presence or absence of disease, damage, property, degree, or to body
The complication system that sign parameter is monitored.However, sent out ultrasonic wave is while as information carrier and the load of power and energy
Body, by with radiant force, acoustic streaming and tissue resorption sound can after the thermal energy that is converted to act on tissue, can also cause sky in some cases
Change, cavitation causes high temperature again, high pressure acts on tissue.When acoustic pressure, sound intensity height to a certain extent when, one such or several works
With disorganization or denaturation, i.e. developmental biology effect will be caused.
But discovery later, damages tissue via ultrasonic probe, and there are also the heat that inverting element itself generates
Amount and caused temperature rise, to the invasive probe for entering body cavity and operative incision, this risk is particularly acute.Intrusive ultrasound is visited
Head is mainly used for the endoscope detecting invaded body cavity and epidermis lower cut, clinically include to such as vagina, rectum, urethra,
Alimentary canal carries out the medical ultrasonic probe of endoscope detecting and treatment, and this kind of ultrasonic probe needs to enter body cavity and subcutaneous tissue
It is interior.For this purpose, the medical ultrasound diagnostic in International Electrotechnical Commission (IEC) and China-custodial care facility underlying security and critical performance are special
Including having been covered with standard.Provided according to standard, the measurement of ultrasonic probe surface temperature be divided into imitate use state and
Imitate two kinds of situations of light condition.Wherein, the measurement for imitating use state, be using load mould as load in the case where,
It is carried out using film or Filamentous thermocouple；The measurement for imitating light condition is in no any coupling medium and load medium
In the case of, it is carried out using film or Filamentous thermocouple.
For this demand, United Kingdom National physics laboratory has developed one and is known as " surface temperature detection body mould
The device of (surface temperature test phantom) " ties up in plexiglass cylinder and a layer thickness is perfused about
Agar gel type sound-heat of 11cm imitates organization material, firstly, the title of the device be it is inaccurate, as body mould, it is only
As the tissue substitute of ultrasonic probe load, rather than a kind of measurement means.A piece of room temperature sulphur is temporarily covered when use
SiClx building rubber compound forms, and top surface is in plane.But this device is not only when for body surface probe there are multinomial major defect,
Plane sound window is only applicable to plane antenna probe, is not suitable for accounting for most of convex array probe used in clinic；In addition, its interior sound
Journey is too short, not can guarantee the effective attenuation of ultrasonic wave, and the heat transfer of its side wall is bad, will lead to the inclined of surface temperature of probe measured value
Difference；Its Open architecture will lead to liquid evaporation loss, to cause the change of imitative organization material sound-thermal characteristics, therefore be only capable of using
It is tested in short-term research, cannot function as fixed equipment long-term (several years) and use.Furthermore Open architecture also results in can not be in water
It is used in bath.The device is only applicable to plane probe, does not consider the needs of invasive probe at all.
Summary of the invention
It is an object of the invention to: to solve the problems, such as that invasive probe surface temperature can not be measured and be examined and determine, this
Invention provides a kind of load mould for intrusive ultrasonic probe surface temperature measurement, as the negative of intrusive ultrasonic probe
It carries, in the case where imitating use state, carries out the measurement of ultrasonic probe surface temperature, have for the insertion of Embedded Ultrasonic probe and coupling
Cylindric intracavitary sound window, it can be ensured that the conformal coupling of existing various intrusive ultrasonic probe radiating surfaces, reason does not couple
Measurement result that is bad and influencing surface temperature of probe.
To achieve the goals above, the present invention provides a kind of loads for intrusive ultrasonic probe surface temperature measurement
Body mould comprising: body mould shell, sound-heat imitate organization material and retaining-plate；Body mould shell is fixed on retaining-plate, body mould shell
Interior filling sound-heat imitates organization material；Retaining-plate and body mould shell are cylindrical shape structure, and the outer diameter of body mould shell is less than supporting
The diameter of plate；The body mould shell further comprises: bottom plate, top panel, metallic cylinder, accent sleeve and intracavitary sound window；It is close
Fixing threaded hole there are two symmetrically opening at the both ends of bottom plate passes through corresponding fixed spiral shell by the first bolt and the second bolt respectively
Hole, and be fixed on bottom plate；It is provided with circular hole in the middle part of bottom plate, and the circular hole is blocked by closing rubber；Metallic cylinder is located at
On retaining-plate, the top of metallic cylinder is equipped with top panel, is provided with circular hole in the middle part of top panel, and accent is installed at the circular hole
Sleeve and intracavitary sound window.
In the above-mentioned technical solutions, the metallic cylinder is made of stainless steel, and inner wall posts sound absorption liner, is used
In absorbing incident ultrasound wave, sound-heat imitates organization material temperature rise caused by eliminating because of its reflection.Wherein, absorb sound liner position mark
Note has the case where single-side radiating sound field for coupling transrectal probe etc. on top panel.
In the above-mentioned technical solutions, accent sleeve is the hollow cylindrical structure of a circular hole in the middle part of top panel；
Intracavitary sound window is the semi-enclosed cylinder-like structure being nested in below accent sleeve, and lower end is closed arc surface, the upper end
For opening, circular cylindrical cavity is formed, for being inserted into and coupling tested intrusive ultrasonic probe.
In the above-mentioned technical solutions, filling sound-heat imitates organization material in the middle metallic cylinder；Wherein, the sound-heat is imitative
Organization material is aqueous high molecular gel based composites, for imitating the acoustics and thermal characteristic of tissue, has standard
Defined acoustic characteristic and thermal characteristic.Wherein, sound-heat imitate organization material acoustics parameters include: the velocity of sound (1540 ±
10) m/s, acoustic attenuation coefficient slope (0.5 ± 0.1) dB/ (cmMHz)；Its thermal characteristic parameter include: specific heat (3500 ±
500) J/ (kgK), thermal conductivity (0.5 ± 0.1) W/ (mK), which, which imitates organization material, has maintainability.
In the above-mentioned technical solutions, using Precerving liquid through circular hole closing rubber injection in the middle part of bottom plate, to imitate tissue to sound-heat
Material carries out maintenance, it can be ensured that its acoustics, thermal characteristic are stablized constant.
In the above-mentioned technical solutions, the top panel, bottom plate, retaining-plate are all made of pmma material and are made.
In the above-mentioned technical solutions, the barrel of the accent sleeve uses polyvinyl chloride or acrylonitrile-butadiene-styrene (ABS)
Polymer plastic (ABS plastic) is made, and intracavitary sound window is made of sound transmitting rubber thin layer.
In the above-mentioned technical solutions, the closing rubber is made of vacuum rubber.
In the above-mentioned technical solutions, the sound-heat imitates the unidirectional sound path in organization material in 10cm or more, and is being sent out
Sound absorption liner is laid in front of ultrasonic beam, it can be ensured that its effective attenuation, will not influence thermal field near temperature thermocouple and
The measured value of surface temperature of probe.
In the above-mentioned technical solutions, the load mould can also can both use in a water bath in air；Load mould pair
The mode of intrusive ultrasonic probe surface temperature measurement includes: non-water-bath thermometric and water-bath thermometric.
The present invention has the advantages that
1, load mould of the invention has sound window in the cylindrical chamber for popping one's head in for Embedded Ultrasonic and being inserted into and coupling, can be true
The conformal coupling of existing various invasive probe radiating surfaces is protected, reason does not couple the bad measurement knot for influencing surface temperature of probe
Fruit.
2, using the thin-wall stainless steel cylinder with good thermal conductivity and stable material quality as the main body of shell, it is ensured that filled
The imitative organization material of sound-heat quickly obtains and the constant ambient temperature as defined in standard.
3, body mould shell is the full-closed structure comprising organic glass, stainless steel and sound transmitting rubber thin layer various material,
The stabilization that sound-heat imitates organization material ingredient is not only improved, and convenient for using under two kinds of environment of the air as defined in standard and water-bath.
4, sound-heat, which imitates organization material, has maintainability, it is ensured that material composition harmony-thermal characteristics is stablized, and use is increased
Service life.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of load mould for invasive probe surface temperature measurement of the invention；
Fig. 2 is a kind of forward sight section of load mould for invasive probe surface temperature measurement of the invention of Fig. 1
Figure；
Fig. 3 is that a kind of load mould for invasive probe surface temperature measurement of the invention is surveyed using non-water-bath mode
The structural schematic diagram of temperature；
Fig. 4 is a kind of load mould for invasive probe surface temperature measurement of the invention using water-bath mode thermometric
Structural schematic diagram.
Appended drawing reference:
1, load mould 2, metallic cylinder
3, top panel 4, retaining-plate
5, accent sleeve 6, circular cylindrical cavity
7, sound-heat imitates organization material 8, sound absorption liner
9, bottom plate 10, the first bolt
11, the second bolt 12, closing rubber
13, invasive probe 14, medical ultrasonic coupling agent are tested
15, thermocouple feeler lever 16, thermojunction type point thermometer
17, thermocouple seal wire 18, temperature control sink
19, distilled water 20, thermometer
21, intracavitary sound window
Specific embodiment
Below in conjunction with attached drawing, the present invention is described in further detail.
As illustrated in fig. 1 and 2, the present invention provides a kind of load moulds for intrusive ultrasonic probe surface temperature measurement
1 comprising: body mould shell, sound-heat imitate organization material 7 and retaining-plate 4；Body mould shell is fixed on retaining-plate 4, body mould shell
Internal filling sound-heat imitates organization material 7；Retaining-plate 4 and body mould shell are cylindrical shape structure, and the outer diameter of body mould shell is less than
The diameter of retaining-plate 4；The body mould shell further comprises: bottom plate 9, top panel 3, metallic cylinder 2, accent sleeve 5 and intracavitary
Sound window 21；Fixing threaded hole there are two symmetrically opening at the both ends of bottom plate 9 passes through the first bolt 10 and the second bolt 11 respectively
Across corresponding fixing threaded hole, and it is fixed on bottom plate 9；The middle part of bottom plate 9 is provided with circular hole, and blocks institute by closing rubber 12
State circular hole；Metallic cylinder 2 is located on retaining-plate 4, and the top of metallic cylinder 2 is equipped with top panel 3, and the middle part of top panel 3 is provided with circle
Hole, and installation cavity port sleeve 5 and intracavitary sound window 21 at the circular hole.
In the above-mentioned technical solutions, accent sleeve 5 is the hollow cylindrical structure of a circular hole in the middle part of top panel；
Intracavitary sound window 21 is the semi-enclosed cylinder-like structure for being nested in 5 lower section of accent sleeve, and lower end is closed arc surface, thereon
End is opening, circular cylindrical cavity 6 is formed, for being inserted into and coupling tested intrusive ultrasonic probe.
In the above-mentioned technical solutions, the barrel of the accent sleeve 5 uses polyvinyl chloride or acrylonitrile-butadiene-benzene second
Alkene polymer plastic (ABS plastic) is made, and the intracavitary sound window 21 of its underpart is made of sound transmitting rubber.
In the above-mentioned technical solutions, filling sound-heat imitates organization material 7 in the metallic cylinder 2；Wherein, the sound-heat is imitative
Organization material 7 is aqueous high molecular gel based composites, has acoustic characteristic and thermal characteristic as defined in standard.Sound-heat is imitative
The acoustic characteristic characterisitic parameter of organization material are as follows: the velocity of sound (1540 ± 10) m/s, acoustic attenuation coefficient slope (0.5 ± 0.1) dB/
(cm·MHz)；Its thermal characteristic parameter are as follows: specific heat (3500 ± 500) J/ (kgK), thermal conductivity (0.5 ± 0.1) W/ (mK).
Wherein, which, which imitates organization material 7, has maintainability, can carry out maintenance guarantor by the Precerving liquid injected through closing rubber 12
It supports, it is ensured that the stabilization of its ingredient and acoustics, thermal characteristic increases service life.
In the above-mentioned technical solutions, organization material 7 is imitated to sound-heat using Precerving liquid and carries out maintenance, Precerving liquid is the bottom of through
The closing rubber 12 at 9 middle part of plate injects.
In the above-mentioned technical solutions, the metallic cylinder 2 has and passes using being made with a thickness of the stainless pipe of 5mm
Hot rapid and stable performance feature；2 inner wall of metallic cylinder pastes sound absorption liner 8, for absorbing incident ultrasonic wave, eliminate because
Sound-heat caused by sound wave reflects is imitated 7 temperature of organization material and is increased.
In the above-mentioned technical solutions, as illustrated in fig. 1 and 2, the top panel 3, bottom plate 9, retaining-plate 4 be all made of with a thickness of
The pmma material of 10mm is made.
In the above-mentioned technical solutions, the closing rubber 12 is made of vacuum rubber.
In the above-mentioned technical solutions, the load mould 1 can also can both use in a water bath in air；Load mould 1
Mode to intrusive ultrasonic probe surface temperature measurement includes: non-water-bath thermometric and water-bath thermometric.
It specifically, is that load mould 1 is placed in air and is kept when the load mould 1 is used for non-water-bath mode
Environment temperature is constant, is then inserted into invasive probe 13 in intracavitary sound window 21 and coupled, uses thermojunction type point thermometer
The surface temperature situation of change of 16 measurement invasive probes 13.It is by load mould when the load mould 1 is used for water-bath mode
1 is placed in temperature control sink 18, is controlled by the temperature of temperature control sink 18, obtains load mould 1 and constant in bath temperature, so
Afterwards by invasive probe 13 be inserted into intracavitary sound window 21 and with its good coupling, measure intrusive spy using thermojunction type point thermometer 16
First 13 surface temperature.
Fig. 3 be for invasive probe surface temperature measurement load mould 1 be used for non-water-bath mode when schematic diagram,
In, load mould 1, tested probe 13 and medical ultrasonic coupling agent 14 are placed on small in the room or big room equipped with air conditioner
In isolation, temperature is controlled within the scope of 23 ± 3 DEG C, is maintained 3 hours, so that sound-heat inside load mould 1 imitates organization material
7 obtain the temperature of external environment, record the explicit value of environment temperature；Then the cylinder into the intracavitary sound window 21 of load mould 1
The appropriate medical ultrasonic coupling agent 14 of injection in shape cavity 6；The front end portion of thermocouple seal wire 17 is adjacent to gummed paper by probing
The center of first 13 radiating surface, thermocouple feeler lever 15 tighten the shank in tested probe with gummed paper, are put into togerther intracavitary sound window 21, with
Probe self weight realizes that the coupling with intracavitary 21 bottom of sound window should be by radiating surface direction for radiating surface in lateral transrectal probe
The locality of the sound absorption liner 8 indicated on alignment top panel 3 is coupled；Wherein, the shank of invasive probe 13 should use
Mechanical clamping device is fixed.Tested ultrasonic device, is switched on, by Ultrasound Instrument by the tested probe 13 of connection and tested ultrasonic device later
The preheating of device stipulated time, shows " defrosting " for ultrasonic instrument screen, keeps tested probe 13 in running order, continues 30 minutes,
The temperature of probe radiating surface is read from the gauge outfit of thermojunction type point thermometer 16 and gives record, and the difference of value and environment temperature does not surpass
6 DEG C are crossed as qualification.
Fig. 4 is that the load mould 1 of invasive probe surface temperature measurement tests the schematic device of use pattern in water-bath, test
In use, needing for be put into temperature control sink 18 load mould 1, which should include heating and stirring function, and
Water temperature can be measured by thermometer 20.Distilled water 19 is added into temperature control sink 18 to being higher by the about 1cm of load mould 1；By water temperature
37 DEG C are set in, stirring and the heating function of water-bath system is opened, maintains 3 hours, so that sound-heat in load mould 1 imitates group
It knits material 7 and obtains bath temperature；Then the distilled water 19 in temperature control sink 18 is taken out into a part, until the upper half of load mould 1
Section exposes the surface；The stirring of water-bath is suspended, will take out, outwelled in intracavitary sound window 21 in 1 temp auto-controlled sink 18 of load mould
It is placed back in after distilled water 19, is then injected into appropriate medical ultrasonic coupling agent 14；By the front end portion glue of thermocouple seal wire 17
Paper is adjacent in the center of 13 radiating surfaces of tested probe, and thermocouple feeler lever 15 tightens the shank in tested probe 13 with gummed paper, together
It is put into the intracavitary sound window 21 of load mould, the coupling with intracavitary 21 bottom of sound window is realized with the self weight of tested probe 13.For
Radiating surface in lateral transrectal probe, radiating surface direction should be aligned the locality of the sound absorption liner 8 indicated on top panel 3 into
Row coupling；Wherein, the shank for being tested probe 13 should be fixed using mechanical clamping device.The tested probe 13 of connection and tested ultrasound are set
It is standby, restore the stirring of water-bath, to keep the temperature of temperature control sink 18 uniform, tested ultrasonic device is switched on, ultrasonic instrument presses it
Stipulated time preheating；Screen is shown into " defrosting ", keeps tested probe in running order, duration regulation are as follows: for not having
The tested probe 13 of standby automatic stay function, run duration are 30 minutes；For having the probe of automatic stay function,
When time span before its automatic stay was less than 30 minutes, it is enabled to be again started up immediately, until gathering together enough 30 minutes, guarantees that it is held
Continuous work 30 minutes.The temperature of 13 radiating surfaces of tested probe is read from the gauge outfit of thermojunction type point thermometer 16 and gives record,
Value is no more than 43 DEG C i.e. and the difference of environment temperature is no more than 10 DEG C for qualification.
In other specific embodiments, the distilled water 19 can be replaced by deionized water.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, those skilled in the art should understand that, to technical side of the invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered of the invention
In scope of the claims.
Claims (9)
1. a kind of load mould (1) for intrusive ultrasonic probe surface temperature measurement, which is characterized in that its structure includes body
Mould shell, sound-heat imitate organization material (7) and retaining-plate (4)；Body mould shell is fixedly connected on retaining-plate (4), in body mould shell
Filling sound-heat imitates organization material (7), and retaining-plate (4) He Timo shell is cylindrical shape；The body mould shell further wraps
It includes: bottom plate (9), top panel (3), metallic cylinder (2), accent sleeve (5) and intracavitary sound window (21)；Close to the both ends of bottom plate (9)
Place is symmetrically opened there are two fixing threaded hole, respectively by the first bolt (10) and the second bolt (11) across corresponding fixed spiral shell
Hole, and be fixed on bottom plate (9)；It is provided with circular hole in the middle part of bottom plate (9), and the circular hole is blocked by closing rubber (12)；Gold
Belong to cylinder (2) to be located on retaining-plate (4), the top of metallic cylinder (2) is equipped with top panel (3), and top panel is provided with circle in the middle part of (3)
Hole, and installation cavity port sleeve (5) and intracavitary sound window (21) at the circular hole.
2. load mould (1) according to claim 1, which is characterized in that the metallic cylinder (2) uses stainless steel material
It is made, sound absorption liner (8) is posted on inner wall.
3. load mould (1) according to claim 1, which is characterized in that accent sleeve (5) is one embedded in top panel
(3) the hollow cylindrical structure of the circular hole in the middle part of；Intracavitary sound window (21) is the semi-enclosed circle being nested in below accent sleeve (5)
Tubular structure, lower end are closed arc surface, and the upper end is opening, are formed circular cylindrical cavity (6).
4. load mould (1) according to claim 1, which is characterized in that the internal filling sound-heat of the metallic cylinder (2)
Imitative organization material (7)；Wherein, the imitative organization material (7) is aqueous high molecular gel based composites.
5. load mould (1) according to claim 1, which is characterized in that the top panel (3), bottom plate (9), retaining-plate
(4) it is made of pmma material.
6. load mould (1) according to claim 1, which is characterized in that the accent sleeve (5) using polyvinyl chloride or
Acrylonitrile-butadiene-styrene (ABS) polymer plastic is made；Intracavitary sound window (21) is made of sound transmitting rubber.
7. load mould (1) according to claim 1, which is characterized in that the closing rubber (12) uses vacuum rubber
It is made.
8. load mould (1) according to claim 1, which is characterized in that the sound-heat imitates organization material (7) using guarantor
Nutrient solution is maintained, and the Precerving liquid is injected via the closing rubber (12) on bottom plate (9).
9. load mould (1) according to claim 1, which is characterized in that the load mould (1) visits intrusive ultrasound
The mode of head surface temperature measurement includes: non-water-bath thermometric and water-bath thermometric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508599.8A CN110530540B (en) | 2018-05-24 | 2018-05-24 | Load body model for measuring surface temperature of invasive ultrasonic probe |
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| Application Number | Priority Date | Filing Date | Title |
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