Ergonomic CBCT (cone beam computed tomography) retention assembly
By designing an ergonomic CBCT retention component, the problems of instability and insufficient comfort of CBCT equipment are solved, and stable retention and efficient image acquisition of patients are achieved, reducing motion artifacts and radiation exposure.
Patent Information
- Application Number
- CN202422271603.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing CBCT equipment has problems such as unstable retention, insufficient comfort, and inability to adapt to different head sizes and morphology of patients in the dental department, resulting in frequent motion artifacts, affecting image clarity and radiation exposure of patients.
An ergonomic CBCT retention assembly is designed, including a chin support structure with a rectangular bottom support and a curved chin stop. Combined with a height-adjustable front support assembly and a Velcro fixation assembly, it increases the contact area and adjusts the retention, and adapts to different patient head forms.
Improves the comfort and stability of patient retention, reduces motion artifacts, ensures smooth progress of CBCT shooting, and avoids unnecessary radiation exposure.
Smart Images
Figure CN223275447U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oral CBCT, in particular to an ergonomic CBCT retention component. Background Art
[0002] Cone beam CT (CBCT) has become one of the most widely used devices in the dental field over the past decade due to its advantages such as submillimeter spatial resolution and low radiation dose. Currently, mainstream CBCT equipment at home and abroad are all standing or sitting, and shooting requires multiple positioning, the overall shooting time is relatively long, and patients are prone to motion artifacts during the CBCT shooting process. On the other hand, since CBCT is mainly used to identify subtle anatomical structures in the dental department, subtle motion artifacts can lead to a significant decrease in image clarity and make it impossible to make a clear diagnosis. This occurs more frequently in communities and private dental clinics that lack specialized oral and maxillofacial medical imaging specialists. Some patients will also need a second shot due to severe motion artifacts, and the second shot will expose the patient to unnecessary radiation.
[0003] Currently, most CBCT machines on the market are retained using a chin rest / bite bar + temporal clamp. Bite bar retention requires good cooperation from the patient and cannot be used for patients with missing front teeth, children, and the elderly. The chin rest is generally a platform-like structure with a chin stop in the front to prevent the patient from moving forward. The temporal clamp is generally a pair of sheet-like structures with a locking structure at the temporal part. This retention structure has the following problems: 1. The chin rest is small in size, the contact area is insufficient, and its vertical structure may lead to insufficient comfort during retention; 2. The chin rest and chin stop are not high enough, which makes it easy for the patient to slip out, increasing the chance of artifacts caused by patient movement; 3. The temporal clamp has only two points of retention, a small retention area, and the locking structure is prone to fatigue and even breakage due to repeated use; 4. The forehead rest cannot be adjusted according to the position of the patient's head. Utility Model Content
[0004] The purpose of the present invention is to provide an ergonomic CBCT retention assembly to solve the technical problems existing in the above-mentioned background technology.
[0005] To achieve the above purpose, the technical solution of the utility model is as follows:
[0006] An ergonomic CBCT retention assembly comprises: a base, a chin rest support detachably fixed to the front of the top of the base, a chin rest fixedly connected to the top of the chin rest support, the chin rest consisting of a rectangular base and an arcuate chin stop, the arcuate chin stop fixedly connected to the top of the rectangular base, the rectangular base ensuring full contact between the patient's chin and the chin rest, the arcuate chin stop being able to fully fit the patient's chin soft tissue, a height-adjustable forehead rest assembly provided at the rear side of the top of the base, and a fixing assembly for fixing the patient's head also provided on the forehead rest assembly.
[0007] Furthermore, two jacks 1 are symmetrically provided on the left and right sides of the front top of the base, and two insertion rods are symmetrically provided on the left and right sides of the bottom end of the chin support, and the two insertion rods are respectively inserted and fixed in the two jacks 1.
[0008] Furthermore, the area of the top surface of the rectangular base is 4*8CM 2 The height and width of the arc-shaped chin guard are 1.5 cm and 8 cm respectively.
[0009] Furthermore, the forehead rest assembly includes: a right column, a left column, a right slider, a left slider, a forehead rest and a driving assembly, the left column and the right column are respectively detachably plugged and fixed on the left and right sides of the rear top of the base, the upper ends of the left column and the right column are respectively provided with a vertical slide groove 2 and a vertical slide groove 1, the vertical slide groove 1 and the vertical slide groove 2 are respectively vertically slidably connected with the right slider and the left slider, the front ends of the left slider and the right slider are respectively fixedly connected to the left and right sides of the rear end of the forehead rest, and the right column is provided with a driving assembly for driving the right slider to move up and down.
[0010] Furthermore, the drive assembly includes: a right top plate, a bearing, a screw and a knob. The right top plate is fixedly connected to the top of the right column. The upper part of the screw is rotatably connected to the right top plate through a bearing. The bottom end of the screw is rotatably connected to the bottom end of a vertical slide. The screw vertically penetrates and is threadedly connected to the right slider. The top end of the screw penetrates to the top of the right top plate and is fixedly connected to the knob.
[0011] Furthermore, it also includes: a left top plate and a sliding rod 1, the left top plate is fixedly connected to the top end of the left column, and the sliding rod 1 is fixedly connected between the bottom end of the left top plate and the bottom end of the second vertical slide groove, and the sliding rod 1 vertically penetrates and is slidably connected to the left slider.
[0012] Furthermore, it also includes: a movable forehead support plate, a second slide rod, a second bearing, a second screw rod, a second knob and an arc-shaped pad. The movable forehead support plate is arranged at the front end of the forehead support, and two second slide rods are symmetrically fixedly connected to the left and right sides of the rear end of the movable forehead support plate. The two second slide rods respectively penetrate longitudinally and are slidably connected to the forehead support. The middle part of the rear end of the movable forehead support plate is rotatably connected to the front end of the second screw rod through the second bearing. The second screw rod penetrates longitudinally and is threadedly connected to the middle part of the forehead support. The rear end of the forehead support is fixedly connected to the second knob. The middle part of the front end of the movable forehead support plate is embedded and fixed with an arc-shaped pad.
[0013] Furthermore, the fixing component includes: a left strap, a right strap, a Velcro female end and a Velcro male end. The left and right sides of the front end of the forehead support are respectively fixedly connected with the fixed ends of the left strap and the right strap. The movable ends of the left strap and the right strap are respectively provided with a Velcro female end and a Velcro male end. The Velcro female end and the Velcro male end are detachably bonded.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] 1. Through the unique design of the chin support, the area of the top surface of the rectangular base is 4*8CM 2 , a larger contact area can increase the contact area with the patient's chin; the arc-shaped chin stop, the arc-shaped shape fits better with the human chin soft tissue; the height and width of the arc-shaped chin stop are 1.5cm and 8cm respectively. The height and width design make the patient feel comfortable when fixing and reduce the generation of motion artifacts.
[0016] 2. The fixing assembly consisting of a left strap, a right strap, a female Velcro end and a male Velcro end can be adjusted and fixed according to the size of each patient's head.
[0017] 3. The forehead support component can be adjusted according to the position of the patient's head, so that the patient's head can be well fixed, avoiding slight movements of the patient's head and ensuring the smooth completion of CBCT shooting. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural diagram of the utility model;
[0019] Figure 2 This is a rear side perspective view of the present invention;
[0020] Figure 3 It is a longitudinal sectional view of the utility model at the right slider;
[0021] Figure 4 It is a longitudinal sectional view of the utility model at the left slider;
[0022] Figure 5It is a cross-sectional view of the utility model at two locations of the screw.
[0023] The numbers in the accompanying drawings are: 1-base, 2-chin rest support, 3-insertion rod, 4-chin rest, 5-right column, 501-vertical slide groove one, 6-left column, 601-vertical slide groove two, 7-right slider, 8-left slider, 9-forehead rest, 10-right top plate, 11-left top plate, 12-bearing one, 13-screw one, 14-sliding rod one, 15-knob one, 16-movable forehead rest, 17-sliding rod two, 18-bearing two, 19-screw two, 20-knob two, 21-arc pad, 22-left strap, 23-right strap, 24-Velcro female end, 25-Velcro male end. DETAILED DESCRIPTION
[0024] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0025] See also Figures 1 to 5 As shown, an ergonomic CBCT retention assembly includes: a base 1, a chin support 2 is detachably fixed to the front of the top of the base 1, and a chin support 4 is fixedly connected to the top of the chin support 2. The chin support 4 consists of a rectangular base and an arc-shaped chin stop. The arc-shaped chin stop is fixedly connected to the top of the rectangular base. The rectangular base allows the patient's chin to fully contact the chin support 4. The area of the top surface of the rectangular base is 4*8CM 2 The larger contact area can increase the contact area with the patient's chin; the arc-shaped chin stop can fully fit with the patient's chin soft tissue, and the height and width of the arc-shaped chin stop are 1.5cm and 8cm respectively. The height and width design make the patient feel comfortable when fixed and reduce the generation of motion artifacts; a height-adjustable forehead rest component is provided on the rear side of the top of the base 1, and a fixing component for fixing the patient's head is also provided on the forehead rest component.
[0026] In this embodiment, two insertion holes 1 are symmetrically provided on the left and right sides of the front top of the base 1, and two insertion rods 3 are symmetrically provided on the left and right sides of the bottom end of the chin support 2. The two insertion rods 3 are respectively inserted and fixed in the two insertion holes 1.
[0027] In this embodiment, the forehead support assembly includes: a right column 5, a left column 6, a right slider 7, a left slider 8, a forehead support 9 and a driving assembly. The left column 6 and the right column 5 are respectively detachably plugged and fixed on the left and right sides of the rear top of the base 1. The upper ends of the left column 6 and the right column 5 are respectively provided with a vertical slide groove 2 601 and a vertical slide groove 1 501. The right slider 7 and the left slider 8 are respectively vertically slidably connected in the vertical slide groove 1 501 and the vertical slide groove 2 601. The front ends of the left slider 8 and the right slider 7 are respectively fixedly connected to the left and right sides of the rear end of the forehead support 9. A driving assembly for driving the right slider 7 to move up and down is provided on the right column 5; the driving assembly includes: a right top plate 10, a bearing 12, a screw 13 and a knob 15. The right top plate 10 is fixedly connected to At the top of the right column 5, the upper part of the screw 13 is rotatably connected to the right top plate 10 through the bearing 12, and the bottom end of the screw 13 is rotatably connected to the bottom end of the vertical slide groove 501. The screw 13 vertically penetrates and is threadedly connected to the right slider 7. The top end of the screw 13 penetrates to the top of the right top plate 10 and is fixedly connected to the knob 15; it also includes: a left top plate 11 and a slide bar 14. The top of the left column 6 is fixedly connected to the left top plate 11, and a slide bar 14 is fixedly connected between the bottom end of the left top plate 11 and the bottom end of the vertical slide groove 2 601. The slide bar 14 vertically penetrates and is slidably connected to the left slider 8; by rotating the knob 15, the screw 13 can be driven to rotate and then the right slider 7 can be driven to move up and down, thereby driving the forehead support 9 to move up and down so that it can fit the patient's forehead.
[0028] In this embodiment, the forehead support assembly also includes: a movable forehead support plate 16, a second slide rod 17, a second bearing 18, a second screw rod 19, a second knob 20 and an arc-shaped pad 21. The movable forehead support plate 16 is arranged at the front end of the forehead support 9, and two slide rods 2 17 are symmetrically fixedly connected to the left and right sides of the rear end of the movable forehead support plate 16. The two slide rods 2 17 respectively penetrate longitudinally and are slidably connected to the forehead support 9. The middle part of the rear end of the movable forehead support plate 16 is rotatably connected to the front end of the second screw rod 19 through the second bearing 18. The second screw rod 19 penetrates longitudinally and is threadedly connected to the middle part of the forehead support 9. The rear end of the forehead support 9 is fixedly connected with the second knob 20. The middle part of the front end of the movable forehead support plate 16 is embedded with an arc-shaped pad 21. The front and rear positions of the movable forehead support plate 16 can be adjusted by rotating the second knob 20 so that it can fully fit the patient's forehead.
[0029] In this embodiment, the fixing component includes: a left strap 22, a right strap 23, a Velcro female end 24 and a Velcro male end 25. The left and right sides of the front end of the forehead support 9 are respectively fixedly connected with the fixed ends of the left strap 22 and the right strap 23. The movable ends of the left strap 22 and the right strap 23 are respectively provided with the Velcro female end 24 and the Velcro male end 25. The Velcro female end 24 and the Velcro male end 25 are detachably bonded together. The left strap 22 and the right strap 23 are passed through the patient's temporal part and fixed by the Velcro female end 24 and the Velcro male end 25, thereby achieving fixation of the patient's head, avoiding slight movements of the patient's head, and ensuring the smooth completion of CBCT shooting.
[0030] Working principle: The patient places his chin on the chin rest 4, then turns knob 15 to drive screw 13 to rotate and then drive the right slider 7 to move up and down, driving the forehead rest 9 to move up and down to a suitable height, then turns knob 20 to adjust the front and back position of the movable forehead rest 16 so that it can fully fit the patient's forehead; then the left strap 22 and the right strap 23 are passed through the patient's temporal part and fixed through the Velcro female end 24 and the Velcro male end 25 to fix the patient's head, avoid slight movements of the patient's head, and ensure the smooth completion of CBCT shooting; finally, the CBCT shooting can be performed.
[0031] It should be noted that the entire CBCT retention component needs to be made of X-ray-penetrable and non-radioactive materials.
[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0033] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent replacement and improvement made by any technician familiar with the profession to the above embodiment without departing from the scope of the technical solution of the present invention and based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.
Claims
1. An ergonomic CBCT retention assembly, characterized in that: include: A base (1) is provided, wherein a chin support seat (2) is detachably plugged and fixed at the front of the top of the base (1), and a chin support (4) is fixedly connected to the top of the chin support seat (2), and the chin support (4) is composed of a rectangular base and an arc-shaped chin stop, and the arc-shaped chin stop is fixedly connected to the top of the rectangular base, so that the patient's chin is in full contact with the chin support (4) through the rectangular base, and the arc-shaped chin stop can fully fit the soft tissue of the patient's chin, and a height-adjustable forehead support assembly is provided at the rear side of the top of the base (1), and a fixing assembly for fixing the patient's head is also provided on the forehead support assembly.
2. The ergonomic CBCT retention assembly according to claim 1, characterized in that: Two insertion holes (1) are symmetrically provided on the left and right sides of the front top of the base (1), and two insertion rods (3) are symmetrically provided on the left and right sides of the bottom end of the chin support (2), and the two insertion rods (3) are respectively inserted and fixed in the two insertion holes (1).
3. The ergonomic CBCT retention assembly according to claim 1, characterized in that: The area of the top surface of the rectangular base is 4*8CM 2 The height and width of the arc-shaped chin guard are 1.5 cm and 8 cm respectively.
4. The ergonomic CBCT retention assembly according to claim 1, characterized in that: The forehead support assembly comprises: a right column (5), a left column (6), a right slider (7), a left slider (8), a forehead support (9) and a driving assembly, wherein the left column (6) and the right column (5) are respectively detachably plugged and fixed on the left and right sides of the rear top of the base (1), and the upper ends of the left column (6) and the right column (5) are respectively provided with a vertical slide groove 2 (601) and a vertical slide groove 1 (501), wherein the vertical slide groove 1 (501) and the vertical slide groove 2 (601) are respectively vertically slidably connected with the right slider (7) and the left slider (8), and the front ends of the left slider (8) and the right slider (7) are respectively fixedly connected with the left and right sides of the rear end of the forehead support (9), and the right column (5) is provided with a driving assembly for driving the right slider (7) to move up and down.
5. The ergonomic CBCT retention assembly according to claim 4, characterized in that: The driving assembly comprises: a right top plate (10), a bearing (12), a screw (13) and a knob (15), wherein the right top plate (10) is fixedly connected to the top of the right upright column (5), the upper portion of the screw (13) is rotatably connected to the right top plate (10) through the bearing (12), the bottom end of the screw (13) is rotatably connected to the bottom end of the vertical slide groove (501), the screw (13) vertically penetrates and is threadedly connected to the right slider (7), and the top end of the screw (13) penetrates to the top of the right top plate (10) and is fixedly connected to the knob (15).
6. The ergonomic CBCT retention assembly according to claim 5, characterized in that: Also includes: A left top plate (11) and a sliding rod (14), the top of the left column (6) is fixedly connected to the left top plate (11), and a sliding rod (14) is fixedly connected between the bottom end of the left top plate (11) and the bottom end of the second vertical slide groove (601), and the sliding rod (14) vertically penetrates and is slidably connected to the left slider (8).
7. The ergonomic CBCT retention assembly according to claim 4, characterized in that: Also includes: A movable forehead support plate (16), a second slide bar (17), a second bearing (18), a second screw rod (19), a second knob (20) and an arc pad (21), wherein the movable forehead support plate (16) is arranged at the front end of the forehead support (9), and two second slide bars (17) are symmetrically fixedly connected to the left and right sides of the rear end of the movable forehead support plate (16), and the two second slide bars (17) respectively penetrate longitudinally and are slidably connected to the forehead support (9), and the middle part of the rear end of the movable forehead support plate (16) is rotatably connected to the front end of the second screw rod (19) through the second bearing (18), and the second screw rod (19) penetrates longitudinally and is threadedly connected to the middle part of the forehead support (9), and the rear end of the forehead support (9) is fixedly connected to the second knob (20), and the middle part of the front end of the movable forehead support plate (16) is embedded and fixed with an arc pad (21).
8. The ergonomic CBCT retention assembly according to claim 4, characterized in that: The fixing assembly comprises: a left strap (22), a right strap (23), a female end of a Velcro (24) and a male end of a Velcro (25); the fixed ends of the left strap (22) and the right strap (23) are fixedly connected to the left and right sides of the front end of the forehead support (9), respectively; the movable ends of the left strap (22) and the right strap (23) are respectively provided with a female end of a Velcro (24) and a male end of a Velcro (25); the female end of a Velcro (24) and the male end of a Velcro (25) are detachably bonded.