Detection phantom

Abstract

The utility model discloses a detection phantom, and relates to the technical field of model moulds, the detection phantom comprises a housing, a test element, an elastic member and a movable member, the housing is provided with a mounting cavity arranged along a first direction opening; a test element is placed in the mounting cavity; the elastic piece is arranged at the bottom of the mounting cavity, abuts against one side of the test element in the first direction and is used for applying elastic force to the test element in the opening direction of the mounting cavity; the movable part is detachably installed at the opening position of the installation cavity, one end of the movable part in the first direction abuts against the other side of the test element in the first direction, and the movable part has a moving stroke in the first direction. According to the technical scheme provided by the utility model, the detection element is moved to a desired to-be-detected position through position adjustment of the movable part, and then the detection element is fixed through common clamping of the elastic part and the movable part, so that the stability of the die body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to model mould technical field, especially relate to a detection body mould. BACKGROUND

[0002] CT is electron computer tomography, it is with the high sensitivity probe of using accurate alignment X ray beam, gamma ray, ultrasonic wave etc. together around the body's some department makes a section scanning one after another, has the characteristics such as scanning time fast, image clear, can be used for the inspection of multiple diseases. The electronic control system and mechanical structure of CT equipment are very complex, in order to keep the good state of equipment in the use process, the medical health department will adopt CT mould body to carry out acceptance of the performance index of CT equipment, detects its stability.

[0003] CT mould body is the columnar detector that detection element is encapsulated in it. In the conventional CT detection mould body, material detection column, air detection column, metal wire detection column etc. detection element is installed in the position to be measured inside the shell, due to lack of effective fixing mode, cannot guarantee that detection element is fixed in the wanted position to be detected, leads to the insufficient stability of mould body itself. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of model moulds, to guarantee that detection element can be fixed in the wanted position to be detected, improve the stability of mould body itself.

[0005] To achieve the above object, the utility model provides a kind of detection body mould, comprising: shell, test element, elastic member and movable element, the shell has the installation cavity being set along the opening of first direction;Test element is placed in the installation cavity;Elastic member is set in the bottom of the installation cavity, with the first direction one side of the test element abutment, for the test element to the installation cavity opening direction exert elastic force;Movable element is detachably installed in the installation cavity opening position, the first direction one end of the movable element with the other side of the first direction of the test element abutment, and the movable element has the activity stroke along the first direction.

[0006] In an embodiment, the installation cavity includes first installation cavity, the first installation cavity is spaced apart and is provided with a plurality of along the second direction, the movable element includes first movable element, the first movable element is also provided with a plurality of corresponding to the first installation cavity.

[0007] In an embodiment, the movable element is provided with the scale in the first direction.

[0008] In an embodiment, the shell comprises a slot through in the second direction, the slot passes through a plurality of the first installation cavities, the detection phantom comprises a baffle, the baffle is provided with a plurality of through holes corresponding to a plurality of the first installation cavities, an inner thread is arranged in the through hole;

[0009] The movable part comprises:

[0010] A rod portion extends in the first direction and is provided with an outer thread on the circumference, the outer thread is matched with the inner thread of the through hole, and one end of the first direction is used for abutting against the test element;

[0011] A head portion is arranged at the other end of the rod portion in the first direction, the diameter of the head portion is greater than that of the through hole, and the head portion is provided with the scale.

[0012] In an embodiment, the shell further comprises a stopper, and the stopper is arranged at the end of the slot in the second direction.

[0013] In an embodiment, the baffle is longer than the slot in the second direction.

[0014] In an embodiment, the installation cavity comprises a second installation cavity, the second installation cavity is arranged at a third direction interval from the first installation cavity, and the size of the second installation cavity in the first direction is greater than that of the first installation cavity in the first direction.

[0015] In an embodiment, the second installation cavity is arranged at a plurality of second direction intervals, and the movable part comprises a second movable part, and the second movable part is also provided with a plurality of second installation cavities.

[0016] In an embodiment, the first installation cavity and the second installation cavity are cross-sectioned in a plane perpendicular to the first direction, and the profile comprises a polygon and a circle.

[0017] In an embodiment, the test element comprises a material detection column, an air detection column and a metal wire detection column.

[0018] The technical scheme of the utility model improves the stability of the phantom itself by adjusting the position of the movable part to move the test element to the desired detection position, and then fixing the test element through the elastic member and the movable part. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0020] Figure 1 A cross-sectional view of an embodiment of the detection phantom provided by the present application is shown in the figure.

[0021] Figure 2 For Figure 1 A cross-sectional view of the detection phantom in another direction is shown in the figure.

[0022] Explanation of reference numerals:

[0023] 100, detection phantom; 1, shell; 11, mounting cavity; 111, first mounting cavity; 112, second mounting cavity; 12, insertion slot; 13, stop block; 2, test element; 3, elastic member; 4, movable element; 41, first movable element; 411, rod portion; 412, head portion; 42, second movable element; 5, baffle; 51, through hole.

[0024] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0028] The CT phantom is a columnar detector in which the detection element is packaged. In a conventional CT detection phantom, the material detection column, the air detection column, the metal wire detection column and the like detection elements are installed at the to-be-detected position inside the shell. Due to the lack of effective fixing mode, it is impossible to ensure that the detection element is fixed at the desired to-be-detected position, resulting in insufficient stability of the phantom itself.

[0029] The utility model provides a kind of detection phantom.

[0030] Please refer to Figure 1 In an embodiment of the utility model, the detection phantom 100 includes: a shell 1, a test element 2, an elastic member 3 and a movable member 4, the shell 1 has an installation cavity 11 arranged in the first direction opening;The test element 2 is placed in the installation cavity 11;The elastic member 3 is arranged at the bottom of the installation cavity 11, and abuts against the first direction side of the test element 2, for applying elastic force to the test element 2 in the opening direction of the installation cavity 11;The movable member 4 is detachably installed at the opening position of the installation cavity 11, and the first direction end of the movable member 4 abuts against the other side of the test element 2 in the first direction, and the movable member 4 has a first direction activity stroke.

[0031] The technical scheme of the utility model, the movable member 4 is detachably installed at the opening position of the installation cavity 11, when the movable member 4 is not installed, the test element 2 is placed in the installation cavity 11, and then the movable member 4 is installed, at this time, the elastic member 3 and the movable member 4 jointly clamp the test element 2, and then the position of the movable member 4 is adjusted, and the test element 2 is always pressed against one end of the movable member 4 under the action of the elastic force of the elastic member 3, so that the test element 2 is adjusted to the required to-be-detected position and can be kept fixed. Among them, the elastic member 3 is generally provided as a spring, and the spring extends in the first direction.

[0032] Since the CT device is to scan the tomography of different heights, a plurality of test elements 2 are needed to be arranged at different heights in the shell 1. Therefore, the mounting cavity 11 comprises a plurality of first mounting cavities 111 arranged in the second direction, and the movable element 4 comprises a plurality of first movable elements 41 corresponding to the first mounting cavities 111. The plurality of test elements 2 are respectively placed in the plurality of first mounting cavities 111, and the plurality of test elements 2 are respectively adjusted at different heights by the first movable elements 41.

[0033] In order to adjust the test element 2 to the desired height, a scale in the first direction is arranged on the movable element 4. The height position of the test element 2 in the first direction can be known through the scale.

[0034] Since the test element 2 and the elastic element 3 are clamped by the shell 1 and the movable element 4 in the first direction, in order to prevent the test element 2 and the elastic element 3 from being damaged, in an embodiment, the shell 1 comprises a slot 12 penetrating in the second direction, the slot 12 penetrates a plurality of the first mounting cavities 111, the detection body model 100 comprises a baffle 5, a plurality of through holes 51 are arranged in the baffle 5 corresponding to a plurality of the first mounting cavities 111, and an internal thread is arranged inside the through hole 51; the first movable element 41 comprises a rod portion 411 and a head portion 412, the rod portion 411 extends in the first direction, an external thread is arranged on the side, and is used for cooperating with the internal thread of the through hole 51; the head portion 412 is arranged at the other end of the rod portion 411 in the first direction, the diameter of the head portion 412 is greater than that of the through hole 51, and the scale is arranged on the head portion 412. The first movable element 41 abuts against the test element 2 through the through hole 51, and the limit position of the first movable element 41 moving in the first direction is that the head portion 412 abuts against the baffle 5, at this time, the first movable element 41 cannot move into the first mounting cavity 111 any more, the pressure borne by the test element 2 and the elastic element 3 is ensured, and the test element 2 and the elastic element 3 are prevented from being damaged.

[0035] In order to make the plurality of through holes 51 correspond to the plurality of first mounting cavities 111, and facilitate the installation of the plurality of first movable elements 41, the shell 1 further comprises a stop block 13 arranged at the end of the slot 12 in the second direction. When the baffle 5 abuts against the stop block 13, the plurality of through holes 51 correspond to the plurality of first mounting cavities 111, at this time, when the first movable element 41 is inserted from the opening of the first mounting cavity 111, it can be inserted into the through hole 51.

[0036] When the test element 2 needs to be replaced, the baffle 5 needs to be extracted at this time, in order to facilitate the extraction of the baffle 5, the size of the baffle 5 in the second direction is longer than that of the slot 12 in the second direction, and the user can hold and extract from the part of the baffle 5 protruding from the slot 12.

[0037] Since the adjustment position of the test element 2 in the first direction in the first installation cavity 111 is limited, in order to obtain more installation positions, or in order to place other types of test elements 2, the installation cavity 11 comprises a second installation cavity 112, and even a third, fourth installation cavity, which is arranged according to requirements, the second installation cavity 112 is arranged in the third direction with the first installation cavity 111, and the size of the second installation cavity 112 in the first direction is greater than that of the first installation cavity 111 in the first direction.

[0038] Wherein the second installation cavity 112 part structure can be set with the first installation cavity 111 part structure, the second installation cavity 112 is spaced apart along the second direction, the movable element 4 comprises a second movable element 42, the second movable element 42 is also provided with a plurality of corresponding second installation cavities 112.

[0039] According to the test requirements, the test element 2 can be set to be various, and the corresponding installation cavity 11 can also be set to be variously formed, the profile of the first installation cavity 111 and the second installation cavity 112 in the plane perpendicular to the first direction includes polygon and circle.

[0040] Since the performance of the CT device needs to be detected, the test element 2 includes a material detection column, an air detection column and a metal wire detection column.

[0041] The above is only an exemplary embodiment of the present application, and does not limit the patent range of the present application, any equivalent structure transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A detection phantom, characterized in that, The application relates to a test element installation device, comprising: a housing with a mounting cavity arranged in an opening along a first direction; a test element placed in the mounting cavity; a resilient member arranged at the bottom of the mounting cavity and abutting against one side of the test element along the first direction, used for applying elastic force to the test element along the opening direction of the mounting cavity; a movable member detachably mounted at the opening position of the mounting cavity, one end of the movable member along the first direction abutting against the other side of the test element along the first direction, and the movable member having a movable stroke along the first direction.

2. The detection phantom of claim 1, wherein, The mounting cavity comprises a plurality of first mounting cavities arranged along a second direction, and the movable member comprises a plurality of first movable members corresponding to the first mounting cavities.

3. The detection phantom of claim 2, wherein, The movable member is provided with a scale along the first direction.

4. The detection phantom of claim 3, wherein, The housing comprises a slot penetrating along the second direction, the slot penetrating through the first mounting cavities, the test body model comprises a baffle provided with a plurality of through holes corresponding to the first mounting cavities, and the inner side of the through holes is provided with internal threads; The first movable member comprises: a rod part extending along the first direction and provided with external threads on the circumferential side, used for cooperating with the internal threads of the through holes, and one end along the first direction abutting against the test element; a head part arranged at the other end of the rod part along the first direction, the diameter of the head part being larger than that of the through hole, and the scale being arranged on the head part.

5. The detection phantom of claim 4, wherein, The housing further comprises a stop block arranged at the end of the slot along the second direction.

6. The test phantom of claim 5, wherein, The baffle is longer than the slot along the second direction.

7. The detection phantom of claim 2, wherein, The mounting cavity comprises a second mounting cavity arranged along a third direction and spaced apart from the first mounting cavity, and the size of the second mounting cavity along the first direction is larger than that of the first mounting cavity along the first direction.

8. The detection phantom of claim 7, wherein, The second mounting cavity comprises a plurality of second mounting cavities arranged along the second direction, and the movable member comprises a plurality of second movable members corresponding to the second mounting cavities.

9. The detection phantom of claim 8, wherein, The first mounting cavity and the second mounting cavity are in a polygonal or circular profile when being cut by a plane perpendicular to the first direction.

10. The detection phantom of claim 1, wherein, The test element comprises a material detection column, an air detection column and a metal wire detection column.

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