Support suitable for well type activity meter to measure phosphorus-32 applicator

Abstract

The utility model discloses a support suitable for a well-type activity meter to measure a phosphorus-32 applicator. The support comprises two annular horizontal frames which are parallel to each other up and down and are arranged at an interval; a plurality of first vertical frames are evenly and annularly distributed between the upper annular horizontal frame and the lower annular horizontal frame in the circumferential direction, the top ends and the bottom ends of the first vertical frames are fixedly connected with the upper annular horizontal frame and the lower annular horizontal frame respectively, second vertical frames are arranged on the outer side of each first vertical frame in parallel at intervals, and the bottom ends of the second vertical frames are connected with the bottom ends of the first vertical frames. An insertion part for inserting a bent phosphorus-32 applicator is formed between the first upright frame and the second upright frame; the two opposite first vertical frames are sleeved with a plurality of elastic threads in parallel in the vertical direction, and the elastic threads are used for fixing the phosphorus-32 applicator in the horizontal or vertical state. The fixing device can be used for fixing the phosphorus-32 applicator in a flat, upright and bent state, and has the advantages that the tough-induced radiation is small, the influence on activity measurement is small, and a well-type activity meter can be conveniently used for measuring and calibrating the applicator.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclide measurement, in particular to a bracket suitable for a well-type activity meter to measure phosphorus-32 applicator. Background Art

[0002] The clinical well-type activity meter measures based on the principle that the current formed by the ionization of gamma rays is proportional to the activity of the nuclide. For the activity measurement of nuclides that only emit beta rays, such as phosphorus-32, the measurement is based on the principle that the bremsstrahlung ionization current generated by beta rays and the medium is proportional to the activity. The carrier form of this type of nuclide needs to be consistent with the container, otherwise a large error will occur. Therefore, when using a well-type activity meter to measure beta-ray nuclides, it is generally only suitable for activity measurement of high-energy beta nuclides (such as phosphorus-32, yttrium-90) in solution in standard bottles (cillin bottles or penicillin bottles).

[0003] When measuring a planar β source such as a phosphorus-32 applicator, bremsstrahlung deviation is often caused. At the same time, due to the different sizes of phosphorus-32 applicators, when directly using a well-type activity meter for measurement, the angular position difference of the phosphorus-32 applicator in the ionization chamber of the well-type activity meter will lead to bremsstrahlung output differences, resulting in large measurement errors and the inability to accurately obtain the activity of the planar applicator. Therefore, there is an urgent need for a bracket suitable for measuring phosphorus-32 applicators with a well-type activity meter. Utility Model Content

[0004] In view of the deficiencies existing in the prior art, the utility model provides a bracket suitable for a well-type activity meter to measure phosphorus-32 applicator.

[0005] The utility model discloses a bracket suitable for a well-type activity meter to measure phosphorus-32 applicator, comprising two annular horizontal brackets which are parallel and spaced apart from each other;

[0006] A plurality of first upright frames are evenly arranged in a circumferential direction between the upper and lower annular horizontal frames, the top ends and bottom ends of the plurality of first upright frames are respectively fixedly connected to the upper and lower annular horizontal frames, a second upright frame is arranged in parallel and at intervals on the outer side of each of the first upright frames, the bottom end of the second upright frame is connected to the bottom end of the first upright frame, and an insertion portion for inserting the phosphorus-32 applicator in a bent state is formed between the first upright frame and the second upright frame;

[0007] A plurality of elastic lines are arranged in parallel along the vertical direction between the two opposite first upright frames, and the plurality of elastic lines are used to fix the phosphorus-32 applicator in a horizontal or upright state.

[0008] As a further improvement of the present invention, the diameter of the outer circle formed by the plurality of the second upright frames is smaller than the inner diameter of the basket of the well-type activity meter.

[0009] As a further improvement of the utility model, the spacing between the upper and lower annular horizontal frames is 3-6 cm.

[0010] As a further improvement of the present invention, the width of the middle seam between the first upright frame and the second upright frame is 1-3 mm.

[0011] As a further improvement of the utility model, the two opposite first upright frames are provided with 1-4 groups of parallel hooks from top to bottom, and an elastic line is sleeved between the two opposite groups of parallel hooks, and the elastic line is in a tensioned state;

[0012] A lowermost set of parallel hooks is disposed near the bottom end of the first upright frame.

[0013] As a further improvement of the utility model, each of the elastic lines is composed of two elastic lines arranged horizontally.

[0014] The two ends of the two elastic lines are respectively mounted on the corresponding parallel hooks of the first upright frame.

[0015] As a further improvement of the present invention, the diameter of the elastic line is 0.2-1 mm.

[0016] As a further improvement of the present invention, the number of the first upright frames is 6;

[0017] The six first upright frames are evenly distributed between the upper and lower annular horizontal frames along the circumferential direction.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model can fix the phosphorus-32 applicator in three postures: flat, upright and bent by arranging a plurality of annular horizontal frames, a first upright frame and a second upright frame, and cooperating with an insertion portion formed by elastic lines and the first upright frame and the second upright frame. The utility model has small bremsstrahlung radiation and small influence on activity measurement, and is convenient for using a well-type activity meter to measure and calibrate the applicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a bracket of a well-type activity meter suitable for measuring phosphorus-32 applicator disclosed in an embodiment of the utility model;

[0021] Figure 2 A schematic diagram of horizontal installation of a phosphorus-32 applicator of a bracket suitable for measuring phosphorus-32 applicators with a well-type activity meter disclosed in an embodiment of the utility model;

[0022] Figure 3A schematic diagram of an upright installation of a phosphorus-32 applicator of a bracket suitable for a well-type activity meter to measure a phosphorus-32 applicator disclosed in an embodiment of the utility model;

[0023] Figure 4 The utility model discloses a schematic diagram of a bent state installation of a phosphorus-32 applicator of a bracket suitable for a well-type activity meter to measure a phosphorus-32 applicator.

[0024] In the figure:

[0025] 1. Circular horizontal frame; 2. First upright frame; 3. Second upright frame; 4. Insertion part; 5. Elastic line; 6. Parallel hook; 7. Phosphorus-32 applicator; 71. Applicator active area. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0030] like Figure 1As shown, according to the utility model, a bracket suitable for a well-type activity meter to measure a phosphorus-32 applicator includes an annular horizontal frame 1, a first upright frame 2, a second upright frame 4, an elastic line 5 and a parallel hook 6, wherein the two annular horizontal frames 1 are arranged in parallel and spaced apart in the vertical direction, a plurality of first upright frames 2 are evenly distributed between the upper and lower annular horizontal frames 1 in the circumferential direction, the top and bottom ends of the plurality of first upright frames 2 are respectively fixedly connected to the upper and lower annular horizontal frames 1, a second upright frame 3 is arranged in parallel and spaced apart on the outer side of each first upright frame 2, the bottom end of the second upright frame 3 is connected to the bottom end of the first upright frame 2, an insertion portion 4 for inserting a phosphorus-32 applicator 7 in a bent state is formed between the first upright frame 2 and the second upright frame 3; a plurality of elastic lines 5 are arranged in parallel and spaced apart between the two opposite first upright frames 2 in the vertical direction, and the plurality of elastic lines 5 are used to fix the phosphorus-32 applicator 7 in a horizontal or upright state.

[0031] In this embodiment, by providing a plurality of annular horizontal frames 1, a first upright frame 2 and a second upright frame 3, in conjunction with an insertion portion 4 formed by an elastic line 5 and the first upright frame 2 and the second upright frame 3, the phosphorus-32 applicator 7 can be fixed in three postures: flat, upright and bent. This has small bremsstrahlung radiation and little effect on activity measurement, making it convenient to use a well-type activity meter to measure and calibrate the applicator.

[0032] Specific:

[0033] like Figure 1 As shown, in the above embodiment, preferably, the materials of the upper and lower annular horizontal frames 1 and the multiple first upright frames 2 and the multiple second upright frames 4 are all low atomic number materials. The materials of the upper and lower annular horizontal frames 1 and the multiple first upright frames 2 and the multiple second upright frames 4 in this embodiment can be carbon fiber, organic glass or other plastics or aluminum alloys.

[0034] In the above embodiment, preferably, the diameter of the outer circle formed by the plurality of second upright frames 3 is smaller than the inner diameter of the basket of the well-type activity meter, so that the bracket fixed with the phosphorus-32 applicator 7 can be placed in the basket of the well-type activity meter.

[0035] In the above embodiment, preferably, the distance between the upper and lower annular horizontal frames 1 is 3-6 cm.

[0036] In the above embodiment, preferably, the width of the insertion portion 4 formed by the middle seam between the first upright frame 2 and the second upright frame 3 is 1-3 mm to facilitate the insertion and fixation of the phosphorus-32 applicator 7 in a bent state.

[0037] In the above embodiment, preferably, the two opposite first upright frames 2 are provided with 1-4 groups of parallel hooks 6 from top to bottom, an elastic line 5 is sleeved between the two opposite groups of parallel hooks 6, and the elastic line 5 is in a tensioned state so as to better fix the phosphorus-32 applicator 7; in the present embodiment, each elastic line 5 is composed of two horizontally arranged elastic lines 5, and the two ends of the two elastic lines 5 are respectively sleeved on the parallel hooks 6 of the two opposite first upright frames 2.

[0038] In the above embodiment, preferably, the diameter of the elastic wire 5 is 0.2-1 mm, and a group of parallel hooks 6 located at the bottom layer are arranged close to the bottom end of the first upright frame 2, that is, the elastic wire 5 of the bottom layer is arranged close to the bottom surface, so that the horizontally placed phosphorus-32 applicator 7 can be fixed in place.

[0039] In the above embodiment, preferably, the number of the first upright frames 2 is 6; the 6 first upright frames 2 are evenly distributed between the upper and lower annular horizontal frames 1 along the circumferential direction.

[0040] In order to facilitate the application on the body surface, the existing phosphorus-32 applicator 7 is usually made of flexible materials, such as filter paper, as a carrier, and the middle area of ​​the filter paper forms the active area 71 of the applicator. At present, the phosphorus-32 applicator 7 can be roughly divided into three categories according to the different shapes and sizes of the lesions. One is a small size that can be directly placed flat on the bottom of the ionization chamber (about 6cm in diameter); one is a long strip with a width of less than 6cm and a length that cannot be completely placed horizontally at the bottom of the ionization chamber; the third is a width and length that are both greater than 6cm, but can be curled and placed at the bottom of the ionization chamber after bending. Based on this, the method of use of this embodiment is as follows:

[0041] 1) For a small size phosphorus-32 applicator 7, such as Figure 2 As shown, an elastic line 5 can be hung on two parallel hooks 6 at the bottom of a relative set of first upright frames 2, and a phosphorus-32 applicator 7 can be fixed at the bottom of the elastic line 5 to reduce the error of horizontal displacement during measurement; then the bracket fixed with the phosphorus-32 applicator 7 is placed in the basket of the well-type activity meter, and the bracket fixed with the phosphorus-32 applicator 7 is placed at the bottom of the ionization chamber through the basket;

[0042] 2) For the phosphorus-32 applicator 7 in an upright state, Figure 3 As shown, at least one set of elastic lines 5 of a relative set of first upright frames 2 can be selected for fixing, and the phosphorus-32 applicator 7 can also be placed in the middle of two parallel elastic lines 5 in each set of elastic lines 5 to ensure that the phosphorus-32 applicator 7 is in an upright state; then the bracket with the phosphorus-32 applicator 7 fixed is placed in the basket of the well-type activity meter, and the bracket with the phosphorus-32 applicator 7 fixed is placed at the bottom of the ionization chamber through the basket;

[0043] 3) The width and length of the phosphorus-32 applicator 7 are both larger than the inner diameter of the ionization chamber, such as Figure 4 As shown, the phosphorus-32 applicator 7 can be bent and inserted into the insertion part 4 formed by multiple first upright frames 2 and second upright frames 3; then the bracket with the phosphorus-32 applicator 7 fixed is placed in the basket of the well-type activity meter, and the bracket with the phosphorus-32 applicator 7 fixed is placed at the bottom of the ionization chamber through the basket.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bracket suitable for a well-type activity meter to measure phosphorus-32 applicator, characterized in that: It includes two annular horizontal frames which are parallel to each other and spaced apart from each other; A plurality of first upright frames are evenly arranged in a circumferential direction between the upper and lower annular horizontal frames, the top ends and bottom ends of the plurality of first upright frames are respectively fixedly connected to the upper and lower annular horizontal frames, a second upright frame is arranged in parallel and at intervals on the outer side of each of the first upright frames, the bottom end of the second upright frame is connected to the bottom end of the first upright frame, and an insertion portion for inserting the phosphorus-32 applicator in a bent state is formed between the first upright frame and the second upright frame; A plurality of elastic lines are arranged in parallel along the vertical direction between the two opposite first upright frames, and the plurality of elastic lines are used to fix the phosphorus-32 applicator in a horizontal or upright state.

2. The bracket according to claim 1, characterized in that: The diameter of the outer circle formed by the plurality of the second upright frames is smaller than the inner diameter of the basket of the well-type activity meter.

3. The bracket according to claim 1, characterized in that: The spacing between the upper and lower annular horizontal frames is 3-6 cm.

4. The bracket according to claim 1, characterized in that: The width of the middle gap between the first upright frame and the second upright frame is 1-3 mm.

5. The bracket according to claim 1, characterized in that: The two opposite first upright frames are provided with 1 to 4 groups of parallel hooks from top to bottom, and an elastic line is sleeved between the two opposite groups of parallel hooks, and the elastic line is in a tensioned state; A lowermost set of parallel hooks is disposed near the bottom end of the first upright frame.

6. The bracket according to claim 5, characterized in that: Each of the elastic lines is composed of two elastic lines arranged horizontally. The two ends of the two elastic lines are respectively mounted on the corresponding parallel hooks of the first upright frame.

7. The bracket according to claim 5, characterized in that: The diameter of the elastic line is 0.2-1 mm.

8. The bracket according to claim 1, characterized in that: The number of the first upright stands is 6; The six first upright frames are evenly distributed between the upper and lower annular horizontal frames along the circumferential direction.

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