CN201782765U

CN201782765U - X-ray filter system of mammography system

Info

Publication number: CN201782765U
Application number: CN 201020295592
Authority: CN
Inventors: 王也平
Original assignee: Neusoft Medical Systems Co Ltd
Priority date: 2010-08-18
Filing date: 2010-08-18
Publication date: 2011-04-06
Anticipated expiration: 2020-08-18

Abstract

The utility model relates to a mammography system, in particular to an X-ray filter system of the mammography system. The X-ray filter system is arranged on a breast X-ray bulb tube in the mammography system, and comprises a filter wheel mounting plate and a rotatable filter wheel, wherein a motor is arranged on the filter wheel mounting plate and is used for driving the filter wheel, and a plurality of filters are uniformly distributed on the filter wheel; and each filter can rotate along with the filter wheel to a position corresponding to a bulb tube window on the breast X-ray bulb tube. In the X-ray filter system, the type and position of the X-ray filters can be accurately and easily determined, and the filter requirements of various X-rays can be met.

Description

A kind of X line defecator of mammary X-ray camera chain

Technical field

This utility model relates to the mammary X-ray camera chain, specifically a kind of X line defecator of mammary X-ray camera chain.

Background technology

In the mammary X-ray camera chain, because the feature X line that the X ray tube produces and the absorption characteristic of mammary gland tissue are complementary, therefore, if when taking, pass through with the elimination of continuous X line with defecator, utilize feature X line to penetrate mammary gland tissue, then can obtain image effect preferably, also can reduce the absorption of mammary gland simultaneously more low-energy continuous X line.

As shown in Figure 1, the X line defecator of existing mammary X-ray camera chain is made up of filter 1, upper mounting plate 2, motor fixing plate 3, motor 4, nut seat 5, the axis of guide 6, leading screw 7 and filter slide 8.Filter 1 is fixed on the filter slide 8, filter slide 8 is installed on the nut seat 5, and is driven by the motor 4 that is installed on the motor fixing plate 3, by the rotation of leading screw 7, drive nut seat 5 and the filter slide 8 of filter 1 is housed, before and after the slideway of upper mounting plate 2, slide.For guaranteeing the accurate of each part position, need to use the axis of guide 6 fixedly upper mounting plate 2 and motor fixing plate 3.Existing this filter apparatus configuration more complicated, and requirement on machining accuracy is higher, and cost of manufacture is bigger; And because three kinds of filters are form arranged linearly, the response time that switches different filters during work is longer; And, can produce mechanical wear in the slideway of the upper mounting plate of being everlasting, and then motion-affecting precision because the filter slide slides.

The utility model content

In order to solve the problems referred to above that existing X line defecator exists, the purpose of this utility model is to provide a kind of X line defecator of mammary X-ray camera chain.Multiple thickness filter on the filter wheel of this X line defecator can be taken turns co-rotation with filter, has satisfied the filtration requirement of various X lines.

The purpose of this utility model is achieved through the following technical solutions:

X line defecator of the present utility model is installed on the mammary X-ray bulb in the mammary X-ray camera chain, described X line defecator has rotating filter wheel, be evenly equipped with a plurality of filters installation site on this filter wheel, be installed on the described installation site each filter all can with the filter wheel rotate to the mammary X-ray bulb on the corresponding position of bulb window.

Wherein: described X line defecator comprises filter wheel installing plate, motor, filter wheel, gear and filter, wherein filter wheel installing plate is installed on the bulb window on the mammary X-ray bulb, on filter wheel installing plate, be separately installed with motor and rotating filter wheel, be connected with the gear that is meshed with the filter wheel on the output shaft of described motor; Be evenly equipped with a plurality of filters on the described filter wheel with its rotation; The outer round surface of filter wheel is a profile of tooth; Be evenly equipped with a plurality of and the corresponding groove of filter shape on the filter wheel, all be equipped with filter in each groove; Also have gasket groove in the groove of ccontaining filter, be provided with plain washer in gasket groove, filter is pressed in the groove of described ccontaining filter by plain washer; Be equipped with backplate on the filter of thinner thickness in the filter; Described filter wheel installing plate is " L " shape, be fixed with motor on the minor face of its " L " shape, the side plate that the edge on another long limit extends upward, formation is connected with bulb window on the mammary X-ray bulb, on side plate, have breach, side plate is divided into two, this indentation, there stretches out, forms extension, and described filter wheel is installed in this extension by the filter wheel shaft.

Advantage of the present utility model and good effect are:

1. the bulb window on defecator of the present utility model and the mammary X-ray bulb is fastening by screw, and the multiple thickness filter on the filter wheel can be taken turns co-rotation with filter, has satisfied the filtration requirement of various X lines.

2. the outer round surface of filter of the present utility model wheel is a profile of tooth, can be meshed by motor-driven gear, realize the rotation of multiple thickness filter; In addition, the gear driven cylindrical is that the filter wheel of profile of tooth can make bulk accomplish minimum, makes structure compact more.

3. filter of the present utility model, can directly being pressed in by plain washer that thickness is bigger filtered in the film trap, can place backplate again on the thinner thickness, is pressed in by plain washer and filters in the film trap, both can guarantee the accurate position of filter, can prevent the filter generation mechanical failure of thinner thickness again.

4. filter of the present utility model is to be pressed in the filtration film trap on the filter wheel by plain washer, has realized the fastening mounting means of screwless.

Description of drawings

Fig. 1 is the structural representation of existing mammary X-ray camera chain X line defecator;

Fig. 2 is one of perspective view of the present utility model;

Fig. 3 is two of a perspective view of the present utility model;

Fig. 4 is a structure explosive view of the present utility model;

Wherein: 1 is filter, and 2 is upper mounting plate, and 3 is motor fixing plate, 4 is motor, and 5 is nut seat, and 6 is the axis of guide, 7 is leading screw, and 8 is the filter slide, and 9 is the mammary X-ray bulb, 10 is that X line defecator is the bulb window of mammary X-ray bulb, 11 is the bulb window of mammary X-ray bulb, and 12 is the filter wheel shaft, and 13 is the filter wheel shaft, 14 is motor, 15 is backplate, and 16 is first filter, and 17 is second filter, 18 are the filter wheel, 19 is plain washer, and 20 is gear, and 21 is bearing, 22 is screw, and 23 are filter wheel installing plate.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As Fig. 2, shown in Figure 3, an end of the mammary X-ray bulb 9 in this utility model mammary X-ray camera chain is provided with bulb window 11, and X line defecator 10 is installed on the bulb window 11 on the mammary X-ray bulb 9.

As shown in Figure 4, defecator comprises filter wheel installing plate 23, filter wheel shaft 12, motor 14, backplate 15, first filter 16, second filter 17, filter wheel 18, plain washer 19, gear 20 and bearing 21.Filter wheel installing plate 23 is " L " shape, be connected with motor 14 by screw 22 on the minor face of its " L " shape, the side plate that the edge on another long limit extends upward, forms and the bulb window on mammary X-ray bulb 9 11 is affixed, have breach on side plate, side plate is divided into two, this indentation, there stretches out, forms extension.Have circular hole on " L " shape minor face of filter wheel installing plate 23, the output shaft of motor 14 passes, is connected with gear 20 by this circular hole below this minor face.Described filter wheel shaft 12 is passed by the extension on another long limit of " L " shape of filter wheel installing plate 23, two bearings 21 are pressed into filter respectively and take turns in the bearing mounting hole on 18 upper and lower surfaces, the filter wheel 18 that bearing 21 is housed is connected with filter wheel shaft 12, load onto jump ring 13 then, utilize jump ring 13 to prevent that filter wheel 18 from axial float taking place, make filter wheel 18 can walk around filter disc wheel shaft 12 smooth rotation; Filter wheel 18 is positioned at the below of filter wheel installing plate 23, and the outer round surface of filter wheel 18 is a profile of tooth, is meshed with gear 20 by motor 14 driven rotary; Be evenly equipped with a plurality of and the corresponding groove of filter shape on the filter wheel 18, all be equipped with filter in each groove, second filter 17 of thickness big (0.5mm) is packed in the groove on the filter wheel 18, can guarantee the accurate position of second filter 17, first filter 16 of thinner thickness (0.03mm) will be gone in the groove on the filter wheel 18, placing thickness on first filter 27 again is the backplate 15 of 1mm, this backplate 15 shields, both can guarantee first filter, 16 accurate positions, can prevent again that first filter 16 of thinner thickness from mechanical failure taking place; Backplate 15 is PMMA (polymethyl methacrylate, popular name are lucite) backplate.Both sides in ccontaining first and second filter 16,17 grooves also have gasket groove, be provided with plain washer 19 in this gasket groove, first and second filter 16,17 and backplate 15 are pressed in the groove of described ccontaining filter by plain washer 19, have realized the fastening mounting means of screwless.

Operation principle of the present utility model is:

During the work of mammary gland machine, motor 14 work, driven wheel 20 rotates, and by the engagement of gear 20 with filter wheel 18, drives filter wheel 18 and walks around 12 rotations of filter disc wheel shaft, determines the kind of filter; Mammary X-ray bulb 9 emission X lines are penetrated by bulb window 11, shine on first filter 16 or second filter 17, by the particular filter effect that the variety classes filter is had, satisfy the filtration requirement of various X lines.

Claims

1. the X line defecator of a mammary X-ray camera chain, it is characterized in that: this X line defecator (10) is installed on the mammary X-ray bulb (9) in the mammary X-ray camera chain, described X line defecator (10) has rotating filter wheel (18), be evenly equipped with a plurality of filters installation site on this filter wheel (18), be installed in each filter on the described installation site all can take turns with filter (18) rotate to mammary X-ray bulb (9) on the corresponding position of bulb window (11).

2. press the X line defecator of the described mammary X-ray camera chain of claim 1, it is characterized in that: described X line defecator (10) comprises filter wheel installing plate (23), motor (14), filter wheel (18), gear (20) and filter, wherein filter wheel installing plate (23) is installed on the bulb window (11) on the mammary X-ray bulb (9), on filter wheel installing plate (23), be separately installed with motor (14) and rotating filter wheel (18), be connected with the gear (20) that is meshed with filter wheel (18) on the output shaft of described motor (14); Be evenly equipped with a plurality of filters on the described filter wheel (18) with its rotation.

3. by the X line defecator of the described mammary X-ray camera chain of claim 2, it is characterized in that: the outer round surface of described filter wheel (18) is a profile of tooth.

4. by the X line defecator of the described mammary X-ray camera chain of claim 2, it is characterized in that: be evenly equipped with a plurality of and the corresponding groove of filter shape on the described filter wheel (18), all be equipped with filter in each groove.

5. press the X line defecator of the described mammary X-ray camera chain of claim 4, it is characterized in that: also have gasket groove in the groove of described ccontaining filter, be provided with plain washer (19) in gasket groove, filter is pressed in the groove of described ccontaining filter by plain washer (19).

6. by the X line defecator of claim 2 or 4 described mammary X-ray camera chains, it is characterized in that: be equipped with backplate (15) in the described filter on the filter of thinner thickness.

7. press the X line defecator of the described mammary X-ray camera chain of claim 2, it is characterized in that: described filter wheel installing plate (23) is " L " shape, be fixed with motor (14) on the minor face of its " L " shape, the side plate that the edge on another long limit extends upward, formation is connected with bulb window (11) on the mammary X-ray bulb (9), on side plate, have breach, side plate is divided into two, this indentation, there stretches out, forms extension, and described filter wheel (18) is installed in this extension by filter wheel shaft (12).