CN209460240U - Medical activity meter and Activity measuring system - Google Patents
Medical activity meter and Activity measuring system Download PDFInfo
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- CN209460240U CN209460240U CN201920030059.3U CN201920030059U CN209460240U CN 209460240 U CN209460240 U CN 209460240U CN 201920030059 U CN201920030059 U CN 201920030059U CN 209460240 U CN209460240 U CN 209460240U
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- containing part
- drug containing
- medical activity
- activity meter
- shell
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Abstract
A kind of Medical activity meter and Activity measuring system, belong to the field of medical instrument technology.The drug containing part that Medical activity meter includes: shell, the intracorporal semiconductor detector of shell is arranged in and is arranged on shell, drug containing part, which has, holds chamber, and the ratio for holding the distance between chamber and semiconductor detector and holding the height of chamber is greater than or equal to 10.Activity measuring system includes above-mentioned Medical activity meter.It is smaller that this Medical activity meter enables to the measurement accuracy of this Medical activity meter to be influenced by sodium chloride eluent solution height.
Description
Technical field
The utility model relates to the field of medical instrument technology, in particular to a kind of Medical activity meter and activity measurement
System.
Background technique
With radioisotopic development and nuclear technology biological field application and the nuclear medicine that grows up, currently
Have become the important component of modern medicine.Wherein Medical activity meter is that Nuclear Medicine Dept, hospital uses subject or patient
Radiopharmaceutical carries out indispensable a kind of important instrument when activity actual measurement.
In the prior art, Medical activity meter is usually and drug to be detected is placed in sodium chloride eluent solution, reuses
Detector detects the type and activity of contained nucleic in drug to be detected, due to semiconductor have atomic number and density compared with
Make lesser volume that the features such as high detection efficient, energy linearity are higher, energy resolution is high can be realized greatly, therefore medical
Activity meter is to the type of drug Radionuclide to be detected and the detection first choice semiconductor detector of activity.
But due to by semiconductor material processing technology and working condition limited, be difficult to be made into well structure and be looped around
Drug surrounding to be detected, therefore the output signal of semiconductor detector is caused to be easy to be influenced by sodium chloride eluent solution height,
So that poor with the measurement accuracy of radioactive activity.
Utility model content
The purpose of this utility model is to provide a kind of Medical activity meter and Activity measuring system, this medical work is enabled to
The measurement accuracy of degree meter is influenced smaller by sodium chloride eluent solution height.
The embodiments of the present invention are achieved in that
The one side of the utility model embodiment provides a kind of Medical activity meter, comprising: shell is arranged in the shell
The drug containing part of interior semiconductor detector and setting on the housing, the drug containing part, which has, holds chamber, institute
The ratio for holding the distance between chamber and the semiconductor detector and the height for holding chamber is stated more than or equal to 10.
Optionally, the distance between the chamber and the semiconductor detector of holding is more than or equal to 420mm.
Optionally, the shell includes the support portion and the accommodating semiconductor detector for connecting the drug containing part
Receiving portion, the support portion and described accommodation section are connected with each other.
Optionally, the support portion is less than institute along the area of section of the plane cutting perpendicular with the shell length direction
State the projected area of receiving portion on the plane.
Optionally, the end face of the support portion is provided with the aperture to match with the drug containing part, and the drug is contained
It puts portion and the support portion is embedded in by the aperture.
Optionally, the drug containing part protrudes into one that the intracorporal volume of the shell accounts for the volume of the drug containing part
Half.
Optionally, the detection area of the semiconductor detector is greater than or equal to 100mm2。
Optionally, the thickness range of the semiconductor detector is between 0.5mm~10mm.
Optionally, the material of the drug containing part includes high-molecular organic material or aluminium alloy.
The another aspect of the utility model embodiment provides a kind of Activity measuring system, comprising: described in above-mentioned any one
Medical activity meter.
The beneficial effect of the utility model embodiment includes:
Medical activity meter provided by the embodiment of the utility model, by the way that drug containing part is arranged on shell, so that making
When with Medical activity meter, sodium chloride eluent solution can be placed in drug containing part, and drug to be detected is placed on chlorine
Change and is sufficiently dissolved in sodium eluent solution；Allow to detect drug transmitting to be detected by the way that semiconductor detector is arranged in shell
Ray signal and output；By will hold the distance between chamber and semiconductor detector and hold chamber height ratio setting
For more than or equal to 10 so that the detection accuracy of the Medical activity meter of the present embodiment by sodium chloride eluent solution height influenced compared with
It is small, so that the detection accuracy of Medical activity meter is higher.
Activity measuring system provided by the embodiment of the utility model uses above-mentioned Medical activity meter, enables to medical
The measurement accuracy of activity meter is influenced smaller by sodium chloride eluent solution height.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of Medical activity meter provided by the embodiment of the utility model；
Fig. 2 is the top view of Fig. 1.
Icon: 100- Medical activity meter；110- shell；111- support portion；112- receiving portion；113- aperture；The end face 114-；
120- semiconductor detector；130- drug containing part；131- holds chamber；L- first distance；X- second distance；D- holds height.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or
The utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " etc. are only used for area
Divide description, is not understood to indicate or imply relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
Fig. 1 is please referred to, the one side of the utility model embodiment provides a kind of Medical activity meter 100, comprising: shell
110, the semiconductor detector 120 being arranged in shell 110 and the drug containing part 130 being arranged on shell 110, drug are contained
Portion 130 is put with chamber 131 is held, the distance between chamber 131 and semiconductor detector 120 is held and holds the height of chamber 131
Ratio is greater than or equal to 10.
It should be noted that the Medical activity meter 100 of the present embodiment further includes electric discharge road, SK shaping circuit before charge-sensitive
And back-end digital processing circuit (Fig. 1 is not shown).
When using the Medical activity meter 100 of the utility model embodiment, chamber is held in drug containing part 130 first
Sodium chloride eluent solution is added in 131, then drug to be detected is placed in sodium chloride eluent solution, drug to be detected is launched
Ray enter semiconductor detector 120 after, electron hole pair can be excited, electron hole pair is electric under the action of extra electric field
Electric discharge road is collected into electric signal before lotus is sensitive, and electric signal enters back-end digital processing circuit after SK shaping circuit, passes through number
The processing of word circuit and analysis will recognise that the energy of incident ray, and then identify the core in the drug to be detected of divergent-ray
Plain type；In addition, by the corresponding strength information of analysis different-energy ray, and then analyze the activity of radiopharmaceutical.
It should also be noted that, under normal conditions, drug containing part 130 can fill with sodium chloride eluent solution, due to be checked
It surveys after drug dissolves in sodium chloride eluent solution and is evenly dispersed in entire sodium chloride eluent solution, therefore identical activity
Drug to be detected causes the number of rays entered in detector different since the position in drug containing part 130 is different,
The number of the ray of sending and its height relationships in sodium chloride eluent solution are as follows:
D=A/ (4 × π × (L+x)2)×S (1)
In formula (1), D is number of rays, and A is the activity of drug to be detected, and first distance L is to hold chamber 131 and semiconductor
The distance between detector 120, second distance x are that drug distance to be detected holds the distance between 131 bottom of chamber, and S is partly to lead
The detection area of bulk detector 120.
The number of rays that drug to be detected positioned at the top for holding chamber 131 emits, which is compared to be located at, holds 131 bottom of chamber
The error of the number of rays of drug transmitting to be detected are as follows:
D1/D2=(L+d)2/L2 (2)
In formula (2), D1For the number of rays emitted positioned at the drug to be detected at the top for holding chamber 131, D2For positioned at holding
The number of rays of the drug to be detected transmitting of the bottom of chamber 131, holding height d is the height for holding chamber 131.
When the ratio of height for holding the distance between chamber 131 and semiconductor detector 120 and hold chamber 131 is greater than or waits
When 10, i.e. L/d >=10, then D1/D2≤1.21。
Medical activity meter 100 provided by the embodiment of the utility model, by the way that drug containing part 130 is arranged on shell 110,
So that sodium chloride eluent solution can be placed in drug containing part 130, and will be to be checked when using Medical activity meter 100
It surveys drug and is placed in sodium chloride eluent solution and sufficiently dissolve；By the way that semiconductor detector 120 is arranged in shell 110, make can
To detect ray signal and the output of drug transmitting to be detected；By will hold between chamber 131 and semiconductor detector 120 away from
Ratio from the height with drug containing part 130 is set greater than or is equal to 10, so that the Medical activity meter 100 of the present embodiment
Detection accuracy influenced by sodium chloride eluent solution height it is smaller so that the detection accuracy of Medical activity meter 100 is higher.
Optionally, the distance between chamber 131 and semiconductor detector 120 are held more than or equal to 420mm.
It should be noted that the medicine bottle that drug containing part 130 usually can select market general, dimensions can also be with
It is selected in existing size, for example, drug containing part 130 may be sized to be greater than along holding chamber 131 short transverse
Or it is equal to 42mm, and it is corresponding, the distance between chamber 131 and semiconductor detector 120 are held more than or equal to 420mm.
Optionally, Fig. 1 is please referred to, shell 110 includes the support portion 111 and accommodating semiconductor of connection drug containing part 130
The receiving portion 112 of detector 120, support portion 111 and receiving portion 112 are connected with each other.
It should be noted that identical material, such as organic polymer material can be used in support portion 111 and receiving portion 112
Material, aluminium alloy or stainless steel production；The light materials such as engineering plastics can also be set by the material of support portion 111, as long as
It can play a supporting role to the object that holds of drug containing part 130 and its inside.
Optionally, referring to Fig.1 and 2, support portion 111 is along the plane cutting perpendicular with 110 length direction of shell
Area of section is less than projected area of the receiving portion 112 in above-mentioned plane.
Since the Medical activity meter 100 of the present embodiment is usually that receiving portion 112 is placed on holding plane in use, medicine
Object containing part 130 places use upward, therefore the sectional area of support portion 111 is set smaller than receiving portion 112 in above-mentioned plane
On projected area so that the present embodiment Medical activity meter 100 in use place it is more stable.Further, since support
Portion 111 only plays a part of to support drug containing part 130, therefore the support portion 111 of small cross sections area is arranged, and enables to entire
The lighter in weight of Medical activity meter 100.
Optionally, Fig. 1 is please referred to, the end face 114 of support portion 111 is provided with the aperture to match with drug containing part 130
113, drug containing part 130 is embedded in support portion 111 by aperture 113.
Specifically, can set tubaeform for drug containing part 130, by by 130 upper section of drug containing part product compared with
Small one end is towards support portion 111 and protrudes into support portion 111, until the sectional area of drug containing part 130 and the cross of aperture 113
Sectional area can be fixed on support portion 111 when identical.Using above-mentioned structure, so that the Medical activity meter 100 of the present embodiment
Structure is relatively simple and convenient for disassembly and assembly.
Optionally, Fig. 1 is please referred to, the volume that drug containing part 130 protrudes into shell 110 accounts for the body of drug containing part 130
Long-pending half.
So, so that drug containing part 130 is fixedly more stable on shell 110, if drug containing part 130
The volume protruded into inside shell 110 is excessive, so that drug containing part 130 dismantles inconvenience；If drug containing part 130 protrudes into shell
Volume inside 110 is too small, and drug containing part 130 is caused fixedly to be not sufficiently stable on shell 110, is easy from shell 110
It falls.
Optionally, the detection area of semiconductor detector 120 is greater than or equal to 100mm2。
It is exemplary it should be noted that the present embodiment is not especially limited the shape of semiconductor detector 120, it can be with
It, can also be using shapes such as tetragonal bodies using cylindrical body.Using above-mentioned structure, so that semiconductor detector 120 can receive
The more rays emitted to drug to be detected, so that the precision of calculated activity is higher, so that the present embodiment
Medical activity meter 100 measurement accuracy it is higher.
Optionally, the thickness range of semiconductor detector 120 is between 0.5mm~10mm.
Specifically, the thickness of semiconductor detector 120 can be set to 0.5mm, 2mm, 4mm, 6mm, 8mm, 10mm.
Due to the voltage swing of the external electric field of the Medical activity meter 100 of the present embodiment and the thickness of semiconductor detector 120
It spends directly proportional, that is, thickness is bigger, and required voltage is also bigger.Therefore the thickness of semiconductor detector 120 selects above-mentioned numerical value
Range, so that the Medical activity meter 100 of the present embodiment does not need the external electric field of setting excessive voltage.
Optionally, the material of drug containing part 130 includes high-molecular organic material or aluminium alloy.
High-molecular organic material and aluminium alloy all have many advantages, such as that light weight, intensity are high, and therefore, drug containing part 130 is adopted
With above-mentioned material, so that the quality of the Medical activity meter 100 of the present embodiment is slimmer and more graceful.
The another aspect of the utility model embodiment provides a kind of Activity measuring system, comprising: the doctor of above-mentioned any one
With activity meter 100.This Activity measuring system has structure identical with the Medical activity meter 100 in previous embodiment and beneficial to effect
Fruit.Since the structure and beneficial effect of Medical activity meter 100 have been described in detail in the aforementioned embodiment, herein no longer
It repeats.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of Medical activity meter characterized by comprising shell, setting in the intracorporal semiconductor detector of the shell and
Drug containing part on the housing is set, and the drug containing part, which has, holds chamber, described to hold chamber and the semiconductor
The distance between detector and the ratio of the height for holding chamber are greater than or equal to 10.
2. Medical activity meter as described in claim 1, which is characterized in that described to hold between chamber and the semiconductor detector
Distance be greater than or equal to 420mm.
3. Medical activity meter as described in claim 1, which is characterized in that the shell includes connecting the drug containing part
Support portion and the receiving portion for accommodating the semiconductor detector, the support portion and described accommodation section are connected with each other.
4. Medical activity meter as claimed in claim 3, which is characterized in that the support portion edge and shell length direction phase
The area of section of vertical plane cutting is less than the projected area of described accommodation section on the plane.
5. Medical activity meter as described in claim 3 or 4, which is characterized in that the end face of the support portion be provided with it is described
The aperture that drug containing part matches, the drug containing part are embedded in the support portion by the aperture.
6. such as the described in any item Medical activity meters of Claims 1 to 4, which is characterized in that the drug containing part protrudes into described
The intracorporal volume of shell accounts for the half of the volume of the drug containing part.
7. such as the described in any item Medical activity meters of Claims 1 to 4, which is characterized in that the detection of the semiconductor detector
Area is greater than or equal to 100mm2。
8. such as the described in any item Medical activity meters of Claims 1 to 4, which is characterized in that the thickness of the semiconductor detector
Range is between 0.5mm~10mm.
9. Medical activity meter as described in claim 1, which is characterized in that the material of the drug containing part includes organic high score
Sub- material or aluminium alloy.
10. a kind of Activity measuring system, which is characterized in that including medical activity as claimed in any one of claims 1 to 9 wherein
Meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920030059.3U CN209460240U (en) | 2019-01-08 | 2019-01-08 | Medical activity meter and Activity measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920030059.3U CN209460240U (en) | 2019-01-08 | 2019-01-08 | Medical activity meter and Activity measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209460240U true CN209460240U (en) | 2019-10-01 |
Family
ID=68044014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920030059.3U Active CN209460240U (en) | 2019-01-08 | 2019-01-08 | Medical activity meter and Activity measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209460240U (en) |
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2019
- 2019-01-08 CN CN201920030059.3U patent/CN209460240U/en active Active
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