CN211325111U

CN211325111U - Laser positioning device of computer tomography system

Info

Publication number: CN211325111U
Application number: CN201921005809.8U
Authority: CN
Inventors: 吴智孟; 涂献堂; 吴子卿
Original assignee: Innovation Service Co ltd
Current assignee: Innovation Service Co ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-08-25
Anticipated expiration: 2029-06-28

Abstract

The utility model provides a laser positioning device of computed tomography system, include: a support, a linear rail, a slide and a laser source. The linear rail is arranged on the support and can move back and forth around an axis to a home position and a lifting position; in the home position, the linear rail is side-by-side with the support; in the raised position, the linear rails and the support member are staggered in the length direction. The slide carriage is arranged on a linear track, and can reciprocate along the length direction of the linear track. The laser source is rotatably disposed on the carriage, and the laser source is energized to emit a laser beam. Therefore, the linear track swings with a single arm, the sliding seat is guided to linearly slide along the length direction of the linear track in a straight line manner, and the laser source is matched to rotate and emit a light beam, so that the linear track is suitable for a computer tomography system and obtains the comprehensive positioning effect of a plurality of incidence angles.

Description

Laser positioning device of computer tomography system

Technical Field

The present invention relates to a positioning technique for a Computed Tomography (CT) system, and more particularly to a laser positioning device for a CT system.

Background

The known Computed Tomography (CT) system scans a human body with X-rays (X-ray) to obtain information, processes the information by a computer and reconstructs multi-slice images, has the advantages of accurate in-vivo information, high resolution, short scanning time, high popularization rate and the like, and is widely applied to medical diagnosis and treatment. It is troubling that even if the experienced person refers to the scanned image, they do not dare to ensure that the correct position inside the corresponding body on the body surface can be found every time.

To solve this problem, the following two configurations have been proposed:

patent Cooperation Treaty (abbreviated PCT) Patent application No. WO2006/125605, at figure 3 of which is drawn a first configuration. Firstly, a carrier device (9) is installed at the periphery of the computer tomography system, and the carrier device is provided with a radiation source (10). Secondly, the carrier device guides the radiation source to move back and forth along a semi-circle with a radius (11) plan. If necessary, the radiation source emits a laser beam (1) towards the object, which falls on the object to form a spot indicating the correct position inside the corresponding body surface.

Figure 4a shows a second configuration in which the radiation source is mounted on a joint (9c) of a robot arm. The arm has a plurality of segments (9a) which rotate about an axis (9b) and further motors (15) are mounted at the segments or joints. The radiation source is operated to emit a laser beam to the object, and the correct position in the body corresponding to the body surface can be clearly identified from the light spot.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a new laser positioning device is suitable for at computed tomography system, its main aim at: the positioning effect of a plurality of incident angles is obtained by adopting a comprehensive structure of single-arm swinging, linear sliding and light beam rotation.

In view of the above, the present invention provides a laser positioning device for a computed tomography system, comprising:

a support member;

a linear rail disposed on the support member to be capable of moving around an axis to and from a home position and a raised position, the linear rail and the support member being side-by-side in the home position, and a length direction of the linear rail being staggered with respect to a height direction of the support member in the raised position;

a slide base disposed on the linear rail, the slide base reciprocating along the length direction of the linear rail;

and the laser source is arranged on the sliding seat and can rotate, and the laser source is electrified to emit a beam of laser.

The laser positioning device of the computer tomography system is characterized in that the shaft is a spindle which is arranged on a transmission mechanism of the support and drives the linear track to rotate relative to the support.

The laser positioning device of the computer tomography system is characterized in that the transmission mechanism is driven by a rotating motor.

The laser positioning device of the computer tomography system is characterized in that the support part stands on a base.

The laser positioning device of the computer tomography system is characterized in that the base is an electric box which holds the support and stably falls on the ground.

The laser positioning device of the computed tomography system is characterized in that the electrical box is provided with a group of trundles.

The laser positioning device of the computer tomography system is characterized in that the base is a fixed base which supports the support piece to be suspended indoors.

The utility model also provides a laser positioning device of computed tomography system, a serial communication port, include:

a support member;

two linear rails respectively arranged on the supporting piece, wherein the two linear rails reciprocate to an original position and a lifting position around two staggered shafts; in the home position, the two linear tracks are side by side; when in the lifting position, the length directions of the two linear tracks are staggered with each other;

two sliding seats which are respectively arranged on the corresponding linear rails and reciprocate along the length direction of the linear rails;

two laser sources, which are respectively arranged on the corresponding sliding seats and can rotate, are electrified to respectively emit a laser beam.

The laser positioning device of the computer tomography system is characterized in that the support part consists of two vertically connected straight plates, each straight plate is provided with a transmission mechanism driven by a rotating motor, and a spindle defining the linear track driven by the transmission mechanism to rotate relative to the support part is taken as an axis.

Therefore, the utility model discloses a laser positioning device carries out the single armed swing with linear track, and the guide slide is along the linear slip of linear track length direction straight line, and cooperation laser source rotates and sends required light beam, can be suitable for at computerized tomography system, obtains the comprehensive location effect of a plurality of incident angles simultaneously.

To further clarify the objects, features and advantages of the present invention, one or more preferred embodiments will be described in detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a combined perspective view of a first embodiment of the laser positioning device of the present invention.

FIG. 2 is a top view of the laser positioning device with the housing removed.

Fig. 3 is a schematic diagram of the use state of the two laser modules.

FIG. 4 is a cross-sectional view of a first laser module.

Fig. 5 is a schematic view of a light emitting unit.

FIG. 6 is a schematic diagram of a computer tomography system with a laser positioning device.

Fig. 7 is a combined perspective view of a second embodiment of the laser positioning device of the present invention.

Description of reference numerals: a laser positioning device 10; a mounting hole 11; a base 12; an electrical box 14; a caster 16; a fixed seat 18; a support member 20; a housing 21;

straight plates

22, 23; covers 24, 25; a first laser module 30; the rotation motors 31, 41; the

transmission mechanisms

32, 42;

shafts

33, 43;

linear rails

34, 44;

slide

35, 45; the

wire track motors

36, 46;

light emitting units

37, 47; a connecting portion 371; an outer cover 372; heat dissipating holes 373; a through hole 374; a laser source 375; a mechanical structure 376; operating the motor 377;

arrows

37A, 30A, 40A; a second laser module 40; a remote controller 50; a computed tomography system 52; a detection station 54; the detection body 56; laser L1, L2; positioning points P1, P2.

Detailed Description

Fig. 1 illustrates a first embodiment of a laser positioning device 10, showing that the laser positioning device 10 is composed of a base 12, a supporting member 20, a first laser module 30, a second laser module 40 and a remote controller 50, wherein the remote controller 50 can remotely control the laser positioning device 10 to perform laser positioning operation.

The base 12 is shown as an electrical box 14 that provides the power required by the laser positioning device 10. The electrical box 14 is provided with a set of casters 16 at the bottom thereof, and the casters 16 can be stably kept on the ground and can be freely moved on the ground. Thus, the base 12 allows the laser positioning device 10 to be moved across the surface or parked at a predetermined location.

The support member 20 includes a housing 21 and two

straight plates

22, 23, the

straight plates

22, 23 stand on the top surface of the electrical box 14, and the support housing 21 is maintained at a certain height on the ground surface.

The first laser module 30 includes a linear rail 34, a slide 35, a rail motor 36 and a light emitting unit 37. The linear track 34 is disposed on the side of the plate 22 and serves as a home position for the linear track alongside the support member 20. The carriage 35 rides outside the linear rail 34, which is connected to the light emitting unit 37 while moving to a position adjacent the housing 21. The linear rail motor 36 is mounted on the linear rail 34, and can drive the slider 35 to reciprocate along the longitudinal direction of the linear rail 34.

Similarly, the second laser module 40 has a linear rail 44, the linear rail 44 being disposed on the side of the straight plate 23, which hangs down to serve as a home position alongside the linear rail 34.

Fig. 2 illustrates the configuration of the laser positioning device 10 from a top view, illustrating the linear rail 34 moving from a home position to a lift position about an axis 33. In the drawings, the shaft 33 is a spindle for driving the linear rail 34 to rotate relative to the support 20 by the transmission mechanism 32. In this embodiment, the transmission mechanism 32 may be a gear box fixed to the straight plate 22, and the housing is coupled to the cover 24 coupled to the straight plate 22 to protect the transmission mechanism 32 from being damaged by external force.

In some embodiments, the drive mechanism 32 may be a pulley, chain or other mechanical configuration that transmits torque.

In addition, the second laser module 40 is constructed in accordance with the first laser module 30, again by coupling a carriage 45 with a linear rail motor 46 on a linear rail 44, and coupling a light emitting unit 47 with the carriage 45. Therefore, the linear rail 44 goes from the original position to the raised position around the shaft 43, and the linear rail motor 46 drives the slider 45 to move back and forth along the length direction of the linear rail 44, so that the light emitting unit 47 is synchronously operated with the slider 45.

Of course, the shaft 43 is a spindle of the transmission mechanism 42 for driving the linear rail 44 to rotate relative to the support 20. The transmission mechanism 42 is fixed on the straight plate 23 and protected by the housing and the cover 25, so that the transmission mechanism 42 is prevented from being damaged by external force.

It is noted that the two

straight plates

22, 23 are vertically connected together so that the two

axes

33, 43 are staggered.

Fig. 3 shows the raised position, where the first laser module 30 provides the power required to oscillate the linear rail 34 relative to the bar 22 (or support 20), from a rotary motor 31 coupled to a transmission 32. Similarly, the second laser module 40 provides the power required to oscillate the linear rail 44 with respect to the plate 23 (or support 20), from another rotary motor 41 coupled below the transmission 42.

In addition, the two light emitting

units

37, 47 have the same configuration. Next, a description will be further made by taking the individual light emitting units 37 as an example.

As shown in fig. 4, the light-emitting unit 37 has a connecting portion 371 outside, and the connecting portion 371 detachably connects the sliding base 35 and a cover 372. The cover 372 forms a heat dissipating hole 373, and an operating motor 377 inside the light emitting unit 37 is seen through the heat dissipating hole 373. In this way, the outer cover 372 protects the internal components of the light emitting unit 37, and the heat inside the light emitting unit 37 is dissipated to the outside through the heat dissipating hole 373.

Fig. 5 depicts the specific structure of the interior of the light emitting unit 35, illustrating that the operating motor 377 is connected to a laser source 375 via a mechanical structure 376. When energized, the operating motor 377 rotates the mechanical structure 376 in the direction of arrow 37A, which drives the laser source 375 to rotate relative to the cover 372 (or the slider 35). The laser source 375 emits a laser beam that passes through a through hole 374 of the outer cover 372 to the outside.

In the present embodiment, the mechanical structure 376 is a linkage. In some embodiments, the mechanical structure 376 may be a gear set, a belt system, a chain drive, or other drive mechanism.

FIG. 6 shows the laser positioning device 10 adjacent a computed tomography system 52, just beside an inspection station 54 during use. The linear track of the first laser module 30 is controlled to rotate to a predetermined angle along the direction of the arrow 30A according to the scanned image, other data or the operation of the remote controller, and emits a laser beam L1 to the detecting station 54. The laser L1 is positioned on a detecting body 56 lying on the detecting table 54, so that a single positioning point P1 is formed, and the positioning point P1 is used as a reference point of the correct position of the body surface corresponding to the body.

Of course, the laser light L1 of the first laser module 30 is incident on the body surface of the detection body 56 at different positions to form a second positioning point P2, so that the reference value of the correct position in the body can be clearly identified.

For precision, after the linear track of the second laser module 40 is raised to a predetermined angle along the arrow 40A, another laser L2 is emitted toward the detecting table 54 and converged to the positioning point P1 or P2, indicating the correct value of the corresponding in-vivo position on the body surface of the detecting body 56.

Fig. 7 is a second embodiment of the laser positioning device 10, which is substantially identical in construction to the first embodiment, with the difference that: first, the base 12 is a mounting block 18, the mounting block 18 being secured to the ceiling of a building sufficient to allow the support member 20 to be suspended indoors.

Next, the fixing base 18 and the supporting member 20 are hollow structures for receiving conductive wires of the first and

second laser modules

30 and 40, and the wires are connected to external power through a mounting hole 11 of the fixing base 18.

Furthermore, portions of the first laser module 30 and the second laser module 40 are shielded by the support member 20. However, the support 20 does not affect the motion pattern of the remote control 50 to manipulate the first laser module 30 or the second laser module 40.

Claims

1. A laser positioning device for a computed tomography system, comprising:

a support (20);

a linear rail (34) disposed on the support (20) and capable of moving around an axis (33) between a home position in which the linear rail (34) and the support (20) are side-by-side and a raised position in which the length direction of the linear rail (34) crosses the height direction of the support (20);

a slide carriage (35) disposed on the linear rail (34), the slide carriage (35) reciprocating along the length direction of the linear rail (34);

a laser source (375) rotatably disposed on the carriage (35), the laser source (375) electrically emitting a laser beam (L1).

2. The laser positioning device of the computed tomography system as set forth in claim 1, wherein the shaft (33) is a spindle mounted on the support (20) and driving the linear rail (34) to rotate relative to the support (20) by a transmission mechanism (32).

3. Laser positioning device for a computer tomography system according to claim 2, characterized in that the transmission mechanism (32) is driven by a rotary motor (31).

4. The laser positioning device of a computed tomography system as set forth in claim 3, wherein the support (20) stands on a base (12).

5. The laser positioning device of a computed tomography system as in claim 4, wherein the base (12) is an electrical box (14) holding the support (20) stably on the ground.

6. The laser positioning device of a computed tomography system as in claim 5, wherein the electrical box (14) is provided with a set of casters (16).

7. The laser positioning device of the computed tomography system as set forth in claim 4, wherein the base (12) is a fixed base (18) that supports the support (20) suspended in the room.

8. A laser positioning device for a computed tomography system, comprising:

a support (20);

two linear rails (34, 44) respectively arranged on the support (20), wherein the two linear rails (34, 44) reciprocate to an original position and a lifting position around the staggered two shafts (33, 43); in the home position, the two linear rails (34, 44) are side by side; in the raised position, the length directions of the linear rails (34, 44) are staggered with each other;

two sliding seats (35, 45) respectively arranged on the corresponding linear rails (34, 44), wherein the sliding seats (35, 45) reciprocate along the length directions of the linear rails (34, 44);

two laser sources (375) are respectively arranged on the corresponding sliding seats (35, 45) and can rotate, and the two laser sources (375) are electrified to respectively emit a laser beam (L1, L2).

9. Laser positioning device for a computed tomography system according to claim 8, characterized in that the support (20) consists of two vertically connected straight plates (22, 23), each straight plate (22, 23) being provided with a transmission mechanism (32, 42) driven by a rotation motor (31, 41), the transmission mechanism (32, 42) defining as the axis (33, 43) the axis about which the linear track (34, 44) is driven by the transmission mechanism (32, 42) to rotate relative to the support (20).