Eye-shaped frame assembly for CT machine, rack, CT machine and PET / CT machine

Abstract

The utility model discloses an eye-shaped frame assembly for a CT machine, a rack, the CT machine and a PET / CT machine. The eye-shaped frame assembly comprises an eye-shaped frame body with a left ear-shaped structure and a right ear-shaped structure, and further comprises two bearing blocks which are respectively fixed on the left ear-shaped structure and the right ear-shaped structure; the left supporting rod and the right supporting rod comprise a left connecting rod and a right connecting rod respectively, each supporting rod further comprises two spherical bearings located at the two ends of the corresponding connecting rod respectively, one of the two spherical bearings of each supporting rod is connected to the corresponding bearing block, and the other one of the two spherical bearings of each supporting rod is connected to the corresponding bearing block; the two ends of each of the left connecting rod and the right connecting rod are provided with threads which are opposite in direction and matched with the corresponding spherical bearings, and each of the left connecting rod and the right connecting rod is provided with an operation part. When force is applied to one of the operation parts, the corresponding one of the left connecting rod and the right connecting rod rotates, and therefore the distance between the spherical bearings at the two ends is changed. According to the scheme, the structure design is ingenious, the redundancy protection function is achieved, and adjustment operation is flexible.

Description

[0001] Nouns and pronouns relating to persons in this patent application are not limited to a specific gender. Technical Field

[0002] The utility model relates to a CT machine and a PET / CT machine. Background Art

[0003] PET / CT is an advanced multi-modal medical imaging system that integrates positron emission tomography (PET) and traditional X-ray computed tomography (CT). It can simultaneously provide detailed anatomical and pathological information, as well as tissue molecular metabolism information. The combination of the two can provide more accurate diagnostic references.

[0004] As a fusion system of PET and CT imaging systems, PET / CT has higher requirements on the structural deformation and yaw control of its subsystem CT during rotation to obtain accurate fusion imaging quality, which is usually not met by traditional CT machines.

[0005] Due to the huge differences in imaging principles and structural components between CT and PET systems, CT and PET are usually manufactured, assembled, and debugged separately as subsystems, and finally integrated in the work room. During the system integration process, the racks of the two can generally be fixed on the same base plate, and the scanning axis (z-axis) can be adjusted and aligned. In addition, as a relatively independent and complete subsystem, the rack of the CT machine should also meet the structural requirements required for its manufacturing and testing processes in the factory before delivery.

[0006] Therefore, the CT gantry requires special design to achieve the functional requirements of adjustment, debugging, support, transportation and integration with PET. Utility Model Content

[0007] In view of this, the utility model proposes an eye-shaped frame assembly, a frame, a CT machine and a PET / CT machine for a CT machine.

[0008] According to a first aspect of the utility model, an eye-shaped frame assembly for a CT machine is provided, comprising an eye-shaped frame body having a left ear-shaped structure and a right ear-shaped structure, and also comprising: two bearing blocks, which are respectively fixed to the left ear-shaped structure and the right ear-shaped structure; a left support rod and a right support rod, which respectively comprise a left connecting rod and a right connecting rod, and each further comprises two spherical bearings separated at both ends of the corresponding connecting rod, one of the two spherical bearings of each is connected to the corresponding bearing block, both ends of each of the left connecting rod and the right connecting rod have threads in opposite directions that cooperate with the corresponding spherical bearings, and each of the left connecting rod and the right connecting rod has an operating part; when force is applied to one of the operating parts, the corresponding one of the left connecting rod and the right connecting rod rotates, thereby changing the distance between the spherical bearings at both ends.

[0009] In one embodiment, the operating portion is a prism segment on the left connecting rod and the right connecting rod.

[0010] In one embodiment, the operating portion is a hole formed on the side surfaces of the left connecting rod and the right connecting rod and perpendicular to the rotation axis thereof.

[0011] In one embodiment, the eye-shaped frame assembly further comprises a left tilting bearing and a right tilting bearing respectively mounted on the left ear-shaped structure and the right ear-shaped structure.

[0012] In one embodiment, the eye-shaped frame assembly also includes a locking sleeve, which includes: a nut; an eccentric bushing having a hexagonal surface, a cylindrical outer surface and a conical inner hole located at the eccentricity of the cylinder; a tapered shaft, which includes: a tapered section having a tapered outer profile, the tapered section cooperating with the tapered inner hole of the eccentric bushing; a rectangular section located in the first hole of the left ear-shaped structure or the right ear-shaped structure; and a threaded section cooperating with the nut.

[0013] According to a second aspect of the utility model, a frame for a CT machine is provided, comprising a left column, a right column, a left tilting bearing, and a right tilting bearing, and also comprising: an eye-shaped frame assembly as described above: the left tilting bearing and the right tilting bearing are respectively mounted on the left ear-shaped structure and the right ear-shaped structure of the eye-shaped frame assembly, and are respectively connected to the left column and the right column; the spherical bearing of each of the left connecting rod and the right connecting rod opposite to the bearing block is respectively connected to the left column and the right column.

[0014] In one embodiment, the frame further includes a rotating bearing and a turntable, wherein the rotating bearing is mounted on the eye-shaped frame assembly, and the turntable is mounted on the rotating bearing.

[0015] According to a third aspect of the utility model, a frame for a CT machine is provided, comprising a left column, a right column, a left tilting bearing, and a right tilting bearing, and also comprising: an eye-shaped frame assembly as described above: the left tilting bearing and the right tilting bearing are respectively mounted on the left ear-shaped structure and the right ear-shaped structure of the eye-shaped frame assembly, and are respectively connected to the left column and the right column; the cylindrical outer surface of the eccentric bushing is located in a second hole in the left column and the right column on the same side of the first hole where the rectangular section of the tapered shaft is located.

[0016] According to a fourth aspect of the present invention, a CT machine is provided, further comprising the frame as described above.

[0017] According to a fifth aspect of the utility model, a PET / CT machine is provided, which also includes the CT machine as described above.

[0018] The utility model proposes an original, practical and cost-effective eye-shaped frame assembly that can be used for PET / CT system integration. The eye-shaped frame assembly of the utility model can meet the structural support and adjustment requirements of the manufacturing and transportation of the CT scanner as a subsystem itself, and can also meet the structural alignment and adjustment requirements of the PET / CT system integration without significantly modifying the original CT system structure. The solution has a clever structural design, redundant protection function and flexible adjustment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will be more aware of the above and other features and advantages of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of a PET / CT machine according to an embodiment of the utility model.

[0021] Figure 2 for Figure 1 Schematic diagram of the interior of the CT machine's gantry of a PET / CT machine.

[0022] Figure 3 for Figure 2 Schematic left side view of the interior of the rack.

[0023] Figure 4 for Figure 2 Schematic right side view of the interior of the rack.

[0024] Figure 5 for Figure 2 Schematic partial stereoscopic view of the interior of a rack.

[0025] Figure 6 for Figure 2 Schematic perspective view of an eye-shaped frame assembly.

[0026] Figure 7 for Figure 6 Schematic enlarged view of the left portion of the eye-shaped frame assembly.

[0027] Figure 8 for Figure 6 Schematic enlarged view of the right portion of the eye-shaped frame assembly.

[0028] Fig. 9 for Figure 4 A schematic partial enlarged view of a schematic right view of the interior of the rack. Fig.10 for Fig. 9 A schematic cross-sectional view of a locking sleeve along a plane perpendicular to the paper surface. In the above drawings, the reference numerals used are as follows:

[0029] 100 PET / CT machine 129 Left support rod 102 PET machine 130 right connecting rod 103 Frame 131 Right support rod 104 CT machine 132 locking sleeve

[0030] 105 Eye-shaped frame assembly 134 Spherical bearing 106 frame base plate 136 pin

[0031] 107 Eye-shaped frame body 138 Bearing block

[0032] 108 left column 140 tapered shaft

[0033] 110 right column 141 first hole

[0034] 112 left ear structure 142 eccentric sleeve

[0035] 114 Right ear-shaped structure 143 Second hole

[0036] 116 Left tilt bearing 144 Nut

[0037] 118 right tilt bearing 145 outer surface

[0038] 120 Rotary bearing 146 Conical section

[0039] 122 Turntable 147 Operation surface

[0040] 124 X-ray tube 148 rectangular segment

[0041] 126 Detector 150 Thread segment

[0042] 128 Left connecting rod DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the following embodiments.

[0044] Figure 1 FIG. 1 is a schematic diagram of a PET / CT machine 100 according to an embodiment of the present invention. Figure 1 As shown, the PET / CT machine 100 includes a PET machine 102 and a CT machine 104, and the frames of the two machines can be fixed on the same base plate and the scanning axis (z axis) can be adjusted and aligned.

[0045] Figure 2 for Figure 1 Schematic diagram of the interior of the gantry 103 of the CT machine 104 of the PET / CT machine 100. Figure 2As shown, the frame 103 includes an eye-shaped frame assembly 105, a frame bottom plate 106, a left column 108, a right column 110, a left tilt bearing 116, and a right tilt bearing 118. The left tilt bearing 116 and the right tilt bearing 118 can adjust the tilt angle of the entire rotating part to meet the geometric vertical requirements of its tilt surface relative to the bottom plane of the frame, which is required when the CT itself is manufactured in the factory and operates normally. The eye-shaped frame assembly 105 has a left ear-shaped structure 112 and a right ear-shaped structure 114, and the left tilt bearing 116 and the right tilt bearing 118 are respectively installed on the left ear-shaped structure 112 and the right ear-shaped structure 114, and are respectively connected to the left column 108 and the right column 110. The left ear-shaped structure 112 and the right ear-shaped structure 114 are named so because they are separated on both sides and protrude outward, not because they are similar to ears in structure. The frame 103 also includes a rotating bearing 120 and a rotating disk 122. The rotating bearing 120 is mounted on the eye-shaped frame assembly 105, and the rotating disk 122 is mounted on the rotating bearing 120. The rotating bearing 120 can drive the rotating disk 122 to rotate, and the rotating disk 122 is equipped with an X-ray tube 124 and a detector 126.

[0046] Figure 3 for Figure 2 A schematic left side view of the interior of the rack 103, Figure 4 for Figure 2 A schematic right side view of the interior of the rack 103, Figure 5 for Figure 2 Schematic partial stereoscopic view of the interior of the rack 103.

[0047] like Figure 3 and Figure 4 As shown, the eye-shaped frame assembly 105 includes two bearing blocks 138, a left support rod 129 and a right support rod 131, and the bearing blocks 138 are respectively fixed to the left ear-shaped structure 112 and the right ear-shaped structure 114. Figure 4 As shown, the eye-shaped frame assembly 105 may also include a locking sleeve 132.

[0048] Figure 6 for Figure 2 Schematic perspective view of the eye-shaped frame assembly 105. Figure 7 for Figure 6 A schematic enlarged view of the left portion of the eye-shaped frame assembly 105, Figure 8 for Figure 6 Schematic enlarged view of the right portion of the eye-shaped frame assembly 105. Fig. 9 for Figure 4 A schematic partial enlarged view of a schematic right view of the interior of the rack 103.

[0049] like Figure 6As shown, the eye-shaped frame assembly 105 includes an eye-shaped frame body 107, a left ear-shaped structure 112, a left support rod 129, a right ear-shaped structure 114, and a right support rod 131. A bearing block 138 is fixed to the left ear-shaped structure 112 and the right ear-shaped structure 114. A rotating bearing 120 is installed on the eye-shaped frame body 107, and a rotating disk 122 is installed on the rotating bearing 120.

[0050] like Figure 7 and 8 As shown, the left support rod 129 and the right support rod 131 include a left connecting rod 128 and a right connecting rod 130 respectively, and the left support rod 129 and the right support rod 131 also include two spherical bearings 134 separated at the two ends of the corresponding connecting rods 128 and 130, and each of the left connecting rod 128 and the right connecting rod 130 has threads at both ends in opposite directions that cooperate with the corresponding spherical bearings 134 (that is, one end is left-handed and the other end is right-handed), and each of the left connecting rod 128 and the right connecting rod 130 has an operating part; when a tool such as a wrench is used to apply force to the operating part, the corresponding one of the left connecting rod 128 and the right connecting rod 130 will rotate, thereby changing the distance between the spherical bearings 134 at both ends.

[0051] In this embodiment, the operating portion is a prism segment on the left connecting rod 128 and the right connecting rod 130. In other embodiments, the operating portion may be a hole formed on the side of the left connecting rod 128 or the right connecting rod 130 and perpendicular to its rotation axis.

[0052] like Figure 3 and Figure 4 As shown, the spherical bearing 134 of each of the left connecting rod 128 and the right connecting rod 130, which is opposite to the bearing block 138, is respectively connected to the left column 108 and the right column 110. When the left connecting rod 128 or the right connecting rod 130 rotates, the distance between the spherical bearings 134 at both ends will change, so that the eye-shaped frame assembly 105 and the components thereon rotate around the left tilt bearing 116 and the right tilt bearing 118, thereby changing the pitch of the rotating part in the frame 103.

[0053] The configuration of the left support rod 129 and the right support rod 131 can provide extremely high support stiffness for the rotating part, while ensuring sufficient structural stiffness of the entire frame, which can greatly reduce the deformation of the scanning plane during the integration and operation of the PET / CT system. The structural form of the tilt bearing and the support rod can ensure the support and flexible adjustment required by the CT system during the manufacturing process.

[0054] like Figure 4-6As shown in FIGS. 8-9 , the eye-shaped frame assembly 105 may further include a locking sleeve 132. In this embodiment, the locking sleeve 132 is mounted on the right ear-shaped structure 114, but is not limited thereto. The locking sleeve 132 may serve as an additional support and locking mechanism to protect the rotating bearing 120 and the entire rotating component when the CT system is transported.

[0055] Fig.10 for Fig. 9 A schematic cross-sectional view of the locking sleeve 132 along a plane perpendicular to the paper surface. Fig.10 As shown, the locking sleeve 132 includes a nut 144, an eccentric bushing 142 and a tapered shaft 140. The eccentric bushing 142 has a cylindrical outer surface 145, a tapered inner hole located at the eccentric position of the cylinder and a hexagonal surface 147. In this embodiment, the eccentric bushing 142 is installed in the second hole 143 of the right column 110, and the hexagonal surface 147 is mainly convenient for installing the eccentric bushing 142. The tapered shaft 140 includes a tapered section 146, a rectangular section 148, and a threaded section 150. The tapered section 146 has a tapered outer profile, which cooperates with the tapered inner hole of the eccentric bushing 142. The rectangular section 148 is located in the first hole 141 of the right ear-shaped structure 114. The threaded section 150 cooperates with the nut 144.

[0056] The eccentric design of the eccentric bushing 142 can compensate for the deviation caused by manufacturing between the first hole 141 of the right ear-shaped structure 114 and the second hole 143 of the right column 110. After installing the two holes, by locking the nut 144 and the threaded section 150, a large tension can be generated between the tapered inner hole of the eccentric bushing 142 and the tapered section 146 of the tapered shaft 140, thereby firmly locking the locking sleeve 132 and providing support and constraint for the rotating part in the direction of gravity. The locking sleeve 132 is flexible to install and also provides sufficient safety protection for the transportation or vehicle-mounted use of the CT system.

[0057] According to another aspect of the present invention, a CT machine 104 is provided, including a frame 103 .

[0058] According to another aspect of the present invention, a PET / CT machine 100 is provided, including a CT machine 104 .

[0059] The utility model proposes an original, practical and cost-effective eye-shaped frame assembly that can be used for PET / CT system integration. The eye-shaped frame assembly of the utility model can meet the structural support and adjustment requirements of the manufacturing and transportation of the CT scanner as a subsystem itself, and can also meet the structural alignment and adjustment requirements of the PET / CT system integration without significantly modifying the original CT system structure. The solution has a clever structural design, redundant protection function and flexible adjustment operation.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An eye-shaped frame assembly (105) for a CT machine (104), comprising an eye-shaped frame body (107) having a left ear-shaped structure (112) and a right ear-shaped structure (114), characterized in that: include: Two bearing blocks (138) are respectively fixed to the left ear-shaped structure (112) and the right ear-shaped structure (114); The left support rod (129) and the right support rod (131) respectively include a left connecting rod (128) and a right connecting rod (130), and each also includes two spherical bearings (134) separated at the two ends of the corresponding connecting rod (128, 130), one of the two spherical bearings (134) of each is connected to the corresponding bearing block (138), and the two ends of each of the left connecting rod (128) and the right connecting rod (130) have threads in opposite directions that match the corresponding spherical bearings (134), and each of the left connecting rod (128) and the right connecting rod (130) has an operating part; when force is applied to one of the operating parts, the corresponding one of the left connecting rod (128) and the right connecting rod (130) rotates, thereby changing the distance between the spherical bearings (134) at the two ends.

2. The eye-shaped frame assembly (105) according to claim 1, characterized in that: The operating part is a prism section on the left connecting rod (128) and the right connecting rod (130).

3. The eye-shaped frame assembly (105) according to claim 1, characterized in that: The operating portion is a hole formed on the side surfaces of the left connecting rod (128) and the right connecting rod (130) and perpendicular to the rotation axis thereof.

4. The eye-shaped frame assembly (105) according to claim 1, characterized in that: It also includes a left tilting bearing (116) and a right tilting bearing (118) respectively mounted on the left ear-shaped structure (112) and the right ear-shaped structure (114).

5. The eye-shaped frame assembly (105) according to claim 1, characterized in that: Also included is a locking sleeve (132), wherein the locking sleeve (132) includes: Nut (144); An eccentric bushing (142) having a hexagonal face (147), a cylindrical outer surface (145) and a tapered inner hole located eccentrically of the cylinder; A tapered shaft (140) comprising: A tapered section (146) having a tapered outer profile, wherein the tapered section (146) cooperates with the tapered inner hole of the eccentric bushing (142); a rectangular section (148) located in the first hole (141) of the left ear-shaped structure (112) or the right ear-shaped structure (114); A threaded section (150) cooperates with the nut (144).

6. A rack (103) for a CT machine (104), comprising a left column (108), a right column (110), a left tilting bearing (116), and a right tilting bearing (118), wherein: include: The eye-shaped frame assembly (105) according to any one of claims 1 to 4: The left tilt bearing (116) and the right tilt bearing (118) are respectively mounted on the left ear-shaped structure (112) and the right ear-shaped structure (114) of the eye-shaped frame assembly (105), and are respectively connected to the left column (108) and the right column (110); The spherical bearing (134) of each of the left connecting rod (128) and the right connecting rod (130) opposite to the bearing block (138) is connected to the left column (108) and the right column (110), respectively.

7. The rack (103) according to claim 6, characterized in that: It also includes a rotating bearing (120) and a rotating disk (122), wherein the rotating bearing (120) is mounted on the eye-shaped frame assembly (105), and the rotating disk (122) is mounted on the rotating bearing (120).

8. A frame (103) for a CT machine (104), comprising a left column (108), a right column (110), a left tilting bearing (116), and a right tilting bearing (118), wherein: include: The eye-shaped frame assembly (105) according to claim 5: The left tilt bearing (116) and the right tilt bearing (118) are respectively mounted on the left ear-shaped structure (112) and the right ear-shaped structure (114) of the eye-shaped frame assembly (105), and are respectively connected to the left column (108) and the right column (110); The cylindrical outer surface (145) of the eccentric bushing (142) is located in a second hole (143) in the left column (108) and the right column (110) on the same side as the first hole (141) where the rectangular section (148) of the tapered shaft (140) is located.

9. A CT machine (104), characterized in that: It comprises a frame (103) as claimed in any one of claims 6 to 8.

10. A PET / CT machine (100), characterized in that: It comprises the CT machine (104) as claimed in claim 9.

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