CN220404025U - Flat panel detector structure - Google Patents

Abstract

The utility model discloses a flat panel detector structure, comprising: a flat panel detector; the first adapter is fixedly connected with the flat panel detector; the second adapter is fixedly connected with the perspective equipment and is in relative rotation connection with the first adapter; and a rotation limiting mechanism for realizing relative rotation and limiting of the first adapter seat and the second adapter seat is arranged between the first adapter seat and the second adapter seat. The utility model realizes the rotation requirement of the flat panel detector for setting the angle, so that the flat panel detector can adjust the angle in the use process without the need of moving a patient to match or swing the position of equipment, thereby being beneficial to expanding the field of view.

Description

Flat panel detector structure

Technical Field

The utility model relates to the technical field of X-ray machines, in particular to a flat panel detector structure.

Background

The movable C-arm X-ray machine has the advantages of small radiation dose, low infection risk, small occupied area, convenient movement and the like, and is widely applied to departments such as orthopaedics, surgery, gynecology and the like in hospitals. The movable C-arm X-ray machine is mainly composed of a bulb tube, an image system, an image processing workstation, a frame and the like. The flat panel detector is one of core components in the flat panel detector cantilever ray imaging system, and the flat panel detector is used as an X-ray machine of an imaging system, so that the radiation dose is lower, the imaging area is larger, the digital image quality is higher, and doctors can be better assisted to complete various orthopedic and surgical treatments.

At present, when the image perspective is carried out on a patient clinically, the prior flat panel detector has some problems: 1. the imaging range of the flat panel detector is adjusted through the window change of the beam limiter, the imaging range is smaller, the image may be incompletely displayed when shooting the spine or long bones, and the rotation angle of the flat panel detector is limited, so that the imaging needs to be carried out for many times, and the radiation amount of a patient is increased; 2. in order to adjust the position of the flat panel detector relative to the human body to capture the region of interest, the patient or the swing device needs to be moved frequently during the operation, which is inconvenient to operate and is easy to cause injury to the patient.

Disclosure of Invention

The utility model aims to: in order to overcome the defects, the utility model provides the flat panel detector structure, the angle can be adjusted in the use process of the flat panel detector, the rotating position of the flat panel detector can be identified in real time, the operation is simple, the patient does not need to move to match or swing the position of the equipment, and the field of view is favorably expanded.

The technical scheme is as follows:

a flat panel detector structure comprising:

a flat panel detector;

the first adapter is fixedly connected with the flat panel detector;

the second adapter is fixedly connected with the perspective equipment and is in relative rotation connection with the first adapter;

and a rotation limiting mechanism for realizing relative rotation and limiting of the first adapter seat and the second adapter seat is arranged between the first adapter seat and the second adapter seat.

Specifically, the rotation limiting mechanism includes:

the rotating groove is arranged below the second adapter seat and is perpendicular to the rotating axis of the flat panel detector;

the limiting rod is arranged on the first adapter seat in a telescopic way along the direction pointing to the rotation axis of the flat panel detector, and the inner end of the limiting rod is arranged in the rotation groove in a sliding way;

the rotation groove is internally provided with a plurality of limit holes which are matched with limit ends arranged at the inner ends of the limit rods so as to realize limit, and the limit rods realize the separation and the matching of the limit ends of the limit rods and the limit holes through expansion and contraction, so that the limit release and the limit between the limit rods and the rotation groove are realized.

More specifically, the rotating groove is an arc groove coaxial with the flat panel detector.

More specifically, a rotary limiting block is fixedly arranged below the second adapter seat, and the rotary groove is formed in the rotary limiting block.

More specifically, a linear bearing is fixedly arranged at the position, corresponding to the rotary limiting block, on the first adapter seat, the limiting rod is slidably arranged in the linear bearing, an end cover is sleeved outside the linear bearing, and the end cover is fixedly connected with the outer end of the limiting rod.

Further, a spring is arranged between the end cover and the inner end of the linear bearing, and the limiting end of the limiting rod is positioned in the limiting hole of the rotating groove to realize limiting fit when the spring is in a natural state.

Further, a supporting seat is fixedly arranged at the position, corresponding to the linear bearing, on the first adapter seat, the inner end of the linear bearing is fixedly connected with the supporting seat, and the outer end of the linear bearing penetrates through a mounting hole, pointing to the rotation axis direction of the flat panel detector, on the supporting seat and penetrates through the end cover.

Still further still be located on the supporting seat the mounting hole lower extreme still has set firmly the cylindric lock of same direction, the pinhole has been seted up to corresponding position department on the end cover inner end, through the pinhole with the sliding fit of cylindric lock realizes the slip direction between the end cover with the linear bearing.

Further, a control button for pushing the end cover to move inwards to control the limiting rod to move inwards is fixedly arranged at the outer end of the end cover.

Further, the rotation limiting block is of an arc-shaped structure coaxial with the flat panel detector.

Specifically, the rotating groove is an arc-shaped sliding rail arranged on the lower end face of the second adapter seat, and a limiting hole in the arc-shaped sliding rail is formed in the radial outward direction.

More specifically, the side of the limiting end of the limiting rod, which is close to the first adapter seat, is also provided with a boss, and the arc-shaped sliding rail is provided with a protrusion which is matched with the boss to limit the limiting end in the arc-shaped sliding rail.

Specifically, the two ends of the rotating groove are respectively provided with a limiting hole matched with the limiting end arranged at the inner end of the limiting rod, and the length of the rotating groove is determined according to the rotating angle requirement of an actual flat panel detector.

Specifically, the first adapter is provided with a trigger element, and the upper end of the trigger element penetrates through the first adapter, the bearing and the second adapter and is higher than the upper end surface of the second adapter;

when the trigger element rotates to the two-pole limit positions of the corresponding flat panel detector along with the first adapter seat, the trigger element is respectively abutted with limit switches correspondingly arranged on the second adapter seat to trigger.

The beneficial effects are that: according to the utility model, through designing the rotation fit and rotation limit between the rotation groove and the limit rod, the rotation requirement of the flat panel detector for setting the angle is realized, so that the flat panel detector can adjust the angle in the use process, the operation is simple, the patient does not need to move to fit or swing the position of the device, and the field of view is beneficial to expanding.

Drawings

FIG. 1 is a mounting block diagram of a C-arm fixed end and a flat panel detector structure;

FIG. 2 is a block diagram of a rotational limit assembly;

FIG. 3 is another view of the rotational stop assembly;

fig. 4 is an exploded view of the rotation limiting assembly.

In the figure, 1 is a rotation limiting assembly, 2 is a flat panel detector, and 3 is a C arm;

11 is a first adapter, 12 is a bearing, 13 is a second adapter, 14 is a rotation limiting block, 15 is a supporting seat, 16 is a limiting rod, 17 is a linear bearing, 18 is an end cover, 19 is a spring, 20 is a control button, and 21 is a limiting plate;

111 is the backing plate, 131 is the limit switch, 132 is the adaptor, 141 is the rotation groove, 151 is the pinhole, 152 is the cylindric lock, 161 is the spacing, 162 is first through-hole, 181 is the second through-hole, 182 is set screw.

Detailed Description

The utility model is further elucidated below in connection with the drawings and the specific embodiments.

Referring to fig. 1, the flat panel detector structure of the present utility model is installed at a fixed end of a perspective device, such as a fixed end of a C-arm 3 of a C-arm machine, and includes a flat panel detector 2 installed opposite to a bulb tube, and a rotation limiting assembly 1 installed between the fixed end of the perspective device and a back surface of the flat panel detector 2 for realizing relative rotation and limiting of the two.

Referring to fig. 2, 3 and 4, the rotation limiting assembly 1 includes a first adapter seat 11 fixedly connected with the flat panel detector 2, a second adapter seat 13 fixedly connected with a fixed end of the perspective device, and a rotation limiting mechanism arranged between the two to realize relative rotation and limiting, specifically, the rotation limiting mechanism includes a bearing 12 arranged between the first adapter seat 11 and the second adapter seat 13, a rotation limiting block 14 fixedly connected with the second adapter seat 13, a limiting rod 16 matched with the rotation limiting block 14 to realize rotation and limiting, a linear bearing 17 sleeved outside the limiting rod 16, an end cover 18 sleeved outside the linear bearing 17, and a spring 19 arranged between the linear bearing 17 and the end cover 18.

As shown in fig. 2 and 4, the first adapter 11 includes a middle support portion and two end adapting portions, the support portion is higher than the adapting portions, the first adapter 11 is fixedly mounted on the back surface of the flat panel detector 2 through the two end adapting portions, a bearing 12 is fixedly mounted on the middle support portion of the first adapter 11, specifically, the bearing 12 is a crossed roller bearing, and an inner ring of the bearing is fixedly mounted on the middle support portion of the first adapter 11 through bolts.

In the present utility model, the bearing 12 may also adopt other structures, as long as the relative rotation fit connection between the first adapter 11 and the second adapter 13 can be realized.

Further, a pad 111 is provided between the bearing 12 and the support portion in the middle of the first adapter 11.

A supporting seat 15 is fixedly arranged on any switching part at two ends of the first switching seat 11, a mounting hole pointing to the axis direction of the bearing 12 is formed in the supporting seat 15, a linear bearing 17 is fixedly arranged in the mounting hole of the supporting seat 15, and a limiting rod 16 is arranged in the linear bearing 17 in a sliding manner; an end cover 18 is sleeved outside the part of the linear bearing 17 positioned on the outer end surface of the supporting seat 15 in a sliding manner, one end of the spring 19 is abutted against the end wall of the supporting seat 15, and the other end is abutted against the inner end wall of the end cover 18. And the outer end of the limiting rod 16 is provided with a first through hole 162, the end cover 18 is provided with a second through hole 181 corresponding to the first through hole 162 arranged at the outer end of the limiting rod 16, when the spring 19 is in a natural state, the second through hole 181 on the end cover 18 is exactly aligned with the first through hole 162 arranged at the outer end of the limiting rod 16, and the limiting rod 16, the linear bearing 17 and the end cover 18 are fixedly penetrated through the fixing screw 182, so that the matched installation among the limiting rod 16, the linear bearing 17 and the end cover 18 is realized. A control button 20 is also fixedly mounted to the outer end of the end cap 18 to facilitate subsequent rotational control.

Further, a pin hole 151 is formed in the support seat 15 at the lower end of the mounting hole, a cylindrical pin 152 is fixedly arranged in the pin hole 151, correspondingly, a pin hole is formed at a corresponding position on the inner end of the end cover 18, and sliding guiding between the end cover 18 and the linear bearing 17 is realized through sliding fit between the pin hole and the cylindrical pin 152.

As shown in fig. 1 and 4, the second adapter 13 is fixedly connected with the fixed end of the C-arm 3 through an adapter 132, and the lower end surface of the second adapter 13 is fixedly connected with the outer ring of the bearing 12 through a bolt, so that the relative rotation between the first adapter 11 and the second adapter 13, that is, the relative rotation between the flat panel detector 2 and the fixed end of the C-arm 3 can be realized; in the present utility model, the second adapter 13 is designed as an adapter plate.

A rotation limiting block 14 is also arranged below the second adapter 13 at a position corresponding to the limiting rod 16 on the side of the bearing 12, and specifically, the rotation limiting block 14 is fixedly arranged on the lower end surface of the second adapter 13 through a bolt; a rotation groove 141 perpendicular to the rotation axis (rotation axis of the bearing 12) of the flat panel detector 2 is formed on the rotation limiting block 14, and the length of the rotation groove 141 is determined according to the rotation angle requirement of the actual flat panel detector 2, which is based on the fact that the flat panel detector 2 can rotate by 45 ° in this embodiment. The inner end of the limiting rod 16 passes through the rotating groove 141, and a limiting end 161 is formed at the inner end of the limiting rod 16 along the direction vertical to the length direction of the limiting rod 16, and the size of the limiting end 161 is larger than the width of the rotating groove 141, so that the movable fit between the limiting rod 16 and the rotating groove 141 can be realized without separation; limiting holes are respectively formed in two ends of the rotating groove 141, and the shape of each limiting hole corresponds to the limiting end 161 of the limiting rod 16, so that the limiting end 161 of the limiting rod 16 is matched with the limiting hole of the rotating groove 141 to realize rotation limiting;

in the utility model, a rotating groove perpendicular to the rotating axis of the flat panel detector can be arranged directly below the second adapter seat, the limiting rod is arranged on the first adapter seat in a telescopic way along the direction pointing to the rotating axis of the flat panel detector, the inner end of the limiting rod is arranged in the rotating groove in a sliding way, and a plurality of limiting holes matched with the limiting ends arranged at the inner ends of the limiting rod are arranged in the rotating groove in the radial direction so as to realize limiting.

Further, a plurality of corresponding limiting holes can be formed on the rotating groove 141 except for the positions of the two ends of the rotating groove, so that finer angle adjustment limiting is realized.

Further, an angle scale may be disposed on the outer end surface of the rotation limiting block 14 along the direction of the rotation groove 141 to indicate the relative rotation angle between the limiting rod 16 and the rotation limiting block 14, i.e. the rotation angle of the flat panel detector 2.

Further, the rotating groove 141 is an arc-shaped groove, and is coaxial with the bearing 12; the radian of the limiting groove 141 is determined according to actual requirements, and in the present utility model, the radian of the limiting groove 141 is set to 45 °.

In the embodiment of the present utility model, the rotation limiting plate 14 is directly designed as an arc plate, and the arc plate is coaxial with the bearing 12, and then the rotation groove 141 is directly formed on the arc plate.

In the embodiment of the present utility model, the rotation limiting assembly is set to achieve 45 ° rotation of the flat panel detector 2, so that the axes of the linear bearing 17, the pin hole 151 of the supporting seat 15, the end cover 18, and the control button 20 are all on the same straight line with the rotation axis of the flat panel detector 2, and sequentially extend outwards along the direction perpendicular to the rotation axis of the flat panel detector 2.

In the utility model, a trigger element is arranged on the first adapter, the upper end of the trigger element penetrates through the first adapter, the bearing and the second adapter and is higher than the upper end surface of the second adapter, and when the trigger element follows the first adapter to rotate to the corresponding two-pole limit position of the flat panel detector, the trigger element is respectively abutted with the limit switch correspondingly arranged on the second adapter to trigger, so that the position of the flat panel detector 2 can be identified.

In a specific embodiment, a hole is formed in the second adapter 13 at a position corresponding to the bearing 12, and two limit switches 131 are fixedly installed on the second adapter 13 and respectively correspond to two limit positions of the flat panel detector 2 at 0 degrees and 45 degrees; further, the position of the first adapter 11 corresponding to the bearing 12 is also perforated, a trigger sensor 21 is fixedly installed on the lower end surface of the first adapter 11 as a trigger element, the upper end of the trigger sensor 21 penetrates through the first adapter 11, the bearing 12 and the second adapter 13 and is higher than the plane of one side of the second adapter 13, which is close to the C arm, the upper end of the trigger sensor 21 is located between two limit switches 131 installed on the second adapter 13 and rotates along with the first adapter 11, and when the flat panel detector 2 rotates to two limit positions, the upper end of the trigger sensor 12 is respectively abutted against one of the limit switches 131 and sends a trigger signal; after the flat panel detector 2 rotates in place, a trigger signal is transmitted to the beam limiter of the bulb tube, so that the rectangular kilolobe layer of the beam limiter is opened for subsequent image perspective.

The working principle of the utility model is as follows:

in the actual working process, when the angle of the flat panel detector is adjusted according to shooting requirements, the control button 20 is pressed, so that the end cover 18 overcomes the elasticity of the spring 19, and meanwhile, the limiting rod 16 fixedly connected with the end cover 18 through the screw is driven to slide inwards in the linear bearing 17, so that the limiting end 161 at the inner end of the limiting rod 16 is separated from the limiting hole at one end of the rotating groove 141, and at the moment, the control button 20 can be kept pressed inwards, the flat panel detector 2 is pulled to rotate, and the first adapter 11 rotates along with the limiting hole. The second adapter 13 is fixed relative to the C-arm 3, namely the first adapter 11 and the second adapter 13 rotate relative to each other, and the rotation limiting block 14 and the limiting rod 16 mounted on the lower end surface of the second adapter 13 rotate relative to each other, namely the limiting rod 16 slides in the rotation groove 141 of the rotation limiting block 14;

when the flat panel detector 2 rotates by a certain angle, for example 45 ° in the present embodiment, the limiting end 161 of the limiting rod 16 reaches the other end of the rotating groove 141, and moves outwards under the action of the elastic force of the spring 19, and just cooperates with the limiting hole at the end of the rotating groove 141 to complete rotation limiting, thereby completing rotation limiting of the flat panel detector 2, at this time, the upper end of the trigger sensor 21 abuts against the limiting switch 131 corresponding to the position of the flat panel detector 2 at this time and sends a trigger signal to identify that the flat panel detector 2 is at the 45 ° position.

In another embodiment of the present utility model, an arc-shaped sliding rail matched with the limiting end 161 of the limiting rod 16 may be disposed on the lower end surface of the second adapter 13 at a position corresponding to the limiting end 161 of the inner end of the limiting rod 16, where the arc-shaped sliding rail just can accommodate the limiting end 161 and can allow the limiting end 161 to slide therein; and the two ends of the arc-shaped slide rail are provided with limiting holes extending outwards along the radial direction, the shape of each limiting hole is consistent with that of each limiting end 161, when the limiting ends 161 slide to the positions of the two ends of the arc-shaped slide rail, the limiting rods 16 move outwards along the radial direction under the action of the springs 19 and just fall into the limiting holes at the two ends of the arc-shaped slide rail, so that the limiting ends 161 of the limiting rods 16 are limited in the arc-shaped slide rail.

Further, a boss is further disposed on a side of the limiting end 161 of the limiting rod 16, which is close to the second adapter 13, and a protrusion matched with the boss is disposed on the arc-shaped sliding rail, so that the limiting end 161 of the limiting rod 16 can be stably limited in the arc-shaped sliding rail to prevent falling off.

According to the utility model, through designing the switching structure and the rotating groove and the limiting rod which are respectively arranged on the switching structure and rotate relatively, the rotating fit and the rotating limiting between the switching structure and the limiting rod are designed, the rotating requirement of the flat panel detector for setting the angle is realized, so that the flat panel detector can adjust the angle and identify the rotating position in real time in the use process, the operation is simple, the patient does not need to move to match or swing the position of the equipment, the visual field range is favorably expanded, the repeated shooting is not needed, and the radiation quantity of the patient is reduced.

The preferred embodiments of the present utility model have been described in detail above, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes (such as number, shape, position, etc.) may be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and these equivalent changes all fall within the scope of the present utility model.

Claims (14)

1. A flat panel detector structure, characterized by: comprising the following steps:

a flat panel detector;

the first adapter is fixedly connected with the flat panel detector;

the second adapter is fixedly connected with the perspective equipment and is in relative rotation connection with the first adapter;

and a rotation limiting mechanism for realizing relative rotation and limiting of the first adapter seat and the second adapter seat is arranged between the first adapter seat and the second adapter seat.

2. The flat panel detector structure of claim 1, wherein: the rotation limiting mechanism comprises:

the rotating groove is arranged below the second adapter seat and is perpendicular to the rotating axis of the flat panel detector;

the limiting rod is arranged on the first adapter seat in a telescopic way along the direction pointing to the rotation axis of the flat panel detector, and the inner end of the limiting rod is arranged in the rotation groove in a sliding way;

and a plurality of limiting holes matched with the limiting ends arranged at the inner ends of the limiting rods to realize limiting are formed in the rotating grooves along the radial direction.

3. The flat panel detector structure of claim 2, wherein: the rotating groove is an arc groove coaxial with the flat panel detector.

4. The flat panel detector structure of claim 2, wherein: and a rotary limiting block is fixedly arranged below the second adapter seat, and the rotary groove is formed in the rotary limiting block.

5. The flat panel detector structure according to claim 4, wherein: the linear bearing is fixedly arranged at the position, corresponding to the rotary limiting block, on the first adapter seat, the limiting rod is slidably arranged in the linear bearing, an end cover is sleeved outside the linear bearing, and the end cover is fixedly connected with the outer end of the limiting rod.

6. The flat panel detector structure according to claim 5, wherein: a spring is arranged between the end cover and the inner end of the linear bearing.

7. The flat panel detector structure according to claim 5, wherein: the first adapter is fixedly provided with a supporting seat at a position corresponding to the linear bearing, the inner end of the linear bearing is fixedly connected with the supporting seat, and the outer end of the linear bearing passes through a mounting hole in the supporting seat along the direction pointing to the rotation axis of the flat panel detector and is arranged in the end cover in a penetrating manner.

8. The flat panel detector structure according to claim 7, wherein: the support seat is positioned at the lower end of the mounting hole and is fixedly provided with a cylindrical pin in the same direction, a pin hole is formed in the corresponding position of the inner end of the end cover, and sliding guide between the end cover and the linear bearing is realized through sliding fit of the pin hole and the cylindrical pin.

9. The flat panel detector structure according to claim 5, wherein: the outer end of the end cover is provided with a control button for pushing the end cover to move inwards so as to control the limiting rod to move inwards.

10. The flat panel detector structure according to claim 4, wherein: the rotary limiting block is of an arc-shaped structure coaxial with the flat panel detector.

11. The flat panel detector structure of claim 2, wherein: the rotating groove is an arc-shaped sliding rail arranged on the lower end face of the second adapter seat, and a limiting hole in the arc-shaped sliding rail is formed in the radial outward direction.

12. The flat panel detector structure according to claim 11, wherein: one side of the limiting end of the limiting rod, which is close to the first adapter seat, is also provided with a boss, and the arc-shaped sliding rail is provided with a protrusion which is matched with the boss to limit the limiting end in the arc-shaped sliding rail.

13. The flat panel detector structure of claim 2, wherein: and limiting holes matched with the limiting ends arranged at the inner ends of the limiting rods are respectively formed at the two ends of the rotating grooves, and the lengths of the rotating grooves are determined according to the rotating angle requirements of the actual flat panel detector.

14. The flat panel detector structure of claim 1, wherein: the first adapter is provided with a trigger element, and the upper end of the trigger element penetrates through the first adapter, the bearing and the second adapter and is higher than the upper end surface of the second adapter;

when the trigger element rotates to the two-pole limit positions of the corresponding flat panel detector along with the first adapter seat, the trigger element is respectively abutted with limit switches correspondingly arranged on the second adapter seat to trigger.