Ankle joint semi-automatic support for 3D printing magnetic resonance

Abstract

The ankle joint semi-automatic support for 3D printing magnetic resonance comprises a bottom plate, a bearing base is installed in the middle of the bottom plate, clamping plate assemblies are symmetrically connected to the positions, on the left side and the right side of the bearing base, of the bottom plate in a sliding mode, and the two clamping plate assemblies are opposite in movement direction. A driving assembly used for driving the two clamping plate assemblies to be in linkage is installed at the position, below the bearing base, of the middle of the bottom plate, one clamping plate assembly is provided with a pushing and stopping mechanism, a containing groove is formed in the upper surface of the bearing base, the bearing base is clamped to the bottom plate, each clamping plate assembly comprises a sliding base, and a vertical arc-shaped clamping plate is installed on each sliding base. An ankle joint fixing area is defined by the left arc-shaped clamping plate, the right arc-shaped clamping plate and the containing groove. The device is reasonable in design, the bottom plate is fixed to the magnetic resonance bed, the required position of an ankle joint on the magnetic resonance bed is clamped through the left clamping plate assembly and the right clamping plate assembly, the number of times that a doctor repeatedly adjusts the position of the ankle of a patient is reduced, and the examination efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a semi-automatic support for ankle joints used for 3D printing magnetic resonance imaging. Background Art

[0002] At present, MRI is widely used to examine congenital abnormalities of various systems of the human body and the bone and joint systems, tumors and tumor-like lesions, inflammatory lesions and traumatic lesions. Routine examinations are generally performed through magnetic resonance imaging bed equipment. Since the magnetic resonance bed is large, when performing imaging examinations of the ankle joint, it is necessary to adjust the position several times to find a suitable examination position. Therefore, it is inconvenient during the imaging examination of the ankle joint. Summary of the invention

[0003] In view of this, the purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and provide a semi-automatic ankle joint bracket for magnetic resonance imaging.

[0004] The present invention is implemented by the following scheme: a semi-automatic support for ankle joints for magnetic resonance imaging: comprising a base plate, a bearing base is installed on the middle part of the base plate, splint assemblies are symmetrically slidably connected on the left and right sides of the bearing base on the base plate, and the two splint assemblies move in opposite directions, and a driving assembly for driving the two splint assemblies to be linked is installed on the middle part of the base plate under the bearing base, and a push-stop mechanism is installed on one of the splint assemblies.

[0005] Furthermore, a placement groove is provided on the upper surface of the bearing base, the bearing base is clamped on the bottom plate, the splint assembly includes a sliding base, a vertical arc-shaped clamping plate is installed on the sliding base, and an ankle joint fixing area is formed between the left and right arc-shaped clamping plates and the placement groove.

[0006] Furthermore, the driving assembly includes a linkage gear, and racks are meshed on both the front and rear sides of the linkage gear, and the two racks are respectively connected to the corresponding clamping plate assemblies.

[0007] Furthermore, a gear groove is opened in the middle of the base plate, and the linkage gear is horizontally rotatably connected in the gear groove. Horizontal rack grooves are symmetrically arranged on the base plate on the front and rear sides of the gear groove. The direction of the rack groove corresponds to the sliding direction of the splint assembly. The middle part of the rack groove is connected with the front and rear edges corresponding to the gear groove, and the rack is slidably connected in the rack groove.

[0008] Furthermore, a clamping block is arranged on the upper surface of the rack, and a clamping groove is arranged on the sliding base corresponding to the clamping block.

[0009] Furthermore, the push-stop mechanism includes a movable handle, a stop ruler is provided on the plate surface on one side of the push-stop mechanism in the middle of the base plate along the sliding direction of the clamping plate assembly, and a toothing that cooperates with the stop rack is provided on the movable handle.

[0010] Furthermore, the movable handle includes a swing arm and a movable arm, one end of the swing arm is hinged to the top of the clamping plate assembly away from the supporting base, the other end of the swing arm is hinged to one end of the movable arm, and a slider is hinged on the other end of the movable arm. A vertical slide rail is provided on the lower part of the clamping plate assembly away from the supporting base, the slider is slidably connected to the vertical slide rail, and the spline is installed on the slider.

[0011] Furthermore, a clearance groove is provided on the bottom of the sliding base corresponding to the stop ruler strip.

[0012] Furthermore, the tooth shape of the stop ruler strip and the tooth shape of the insert teeth are both right-angle cross-section teeth.

[0013] Furthermore, an inverted trapezoidal cross-section slide rail is provided on the base, the gear groove and the rack slide groove are opened on the inverted trapezoidal cross-section slide rail, trapezoidal cross-section slide grooves are provided corresponding to the inverted trapezoidal cross-section slide rail under the sliding base and the bearing base, and the stop ruler strip is installed on the inverted trapezoidal cross-section slide rail.

[0014] Compared with the prior art, the present invention has the following beneficial effects: reasonable design, the base plate is fixed on the magnetic resonance bed, and the ankle joint is clamped at the required position on the magnetic resonance bed by the left and right splint assemblies, which reduces the number of times the doctor repeatedly adjusts the patient's ankle position and improves the efficiency of the examination. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model (one of the splint components and the bearing base are removed);

[0017] Figure 3 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0018] In the figure: 1-base plate; 2-bearing base; 3-clamp assembly; 4-driving assembly; 5-push stop mechanism; 6-placing groove; 7-sliding base; 8-arc-shaped clamping plate; 9-linked gear; 10-rack; 11-gear groove; 12-rack slide groove; 13-block; 14-slot; 15-movable handle; 16-stop ruler; 17-gear insert; 18-swing arm; 19-movable arm; 20-slider; 21-vertical slide rail; 22-give way slot; 23-inverted trapezoidal section slide rail; 24-trapezoidal section slide groove. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] like Figure 1-3 As shown, a semi-automatic support for ankle joints used in 3D printing magnetic resonance imaging includes: a base plate 1, a bearing base 2 is installed in the middle of the base plate, and splint assemblies 3 are symmetrically slidably connected on the left and right sides of the base plate on the base plate, and the two splint assemblies move in opposite directions. A driving assembly 4 for driving the two splint assemblies to link together is installed under the bearing base in the middle of the base plate, and a push-stop mechanism 5 is installed on one of the splint assemblies. When in use, the base plate is arranged along the short axis direction of the magnetic resonance examination bed, and the base plate can be fixed to the magnetic resonance examination bed by any existing method, and one of the splint assemblies is driven to move by the push-stop mechanism, and then the two splint assemblies are driven to link together by the driving assembly to realize the opening or reduction of the distance between the two splints, and the ankle joint to be tested is put down and placed on the bearing base, and then the two splint assemblies are moved to clamp the ankle, and locked by the push-stop mechanism to realize fixation.

[0023] In this embodiment, for the sake of reasonable design, a more specific structure is as follows: a placement groove 6 is provided on the upper surface of the bearing base, and the bearing base is clamped on the bottom plate. The clamping method can be fixed in the form of an existing snap buckle, or it can be other fixing methods, as long as the fixation can be achieved. The splint assembly includes a sliding base 7, and a vertical arc-shaped clamping plate 8 is installed on the sliding base. The arc-shaped openings of the two arc-shaped clamping plates face the middle, and the left and right arc-shaped clamping plates and the placement groove form an ankle joint fixing area.

[0024] In this embodiment, in order to specifically realize the linkage of the two splint assemblies, the driving assembly includes a linkage gear 9, and racks 10 are meshed on the front and rear sides of the linkage gear. The two racks are respectively connected to the corresponding splint assemblies, that is, one splint assembly corresponds to one rack, and one splint assembly is driven to move through the push-stop mechanism, thereby driving the corresponding rack to slide, thereby driving the linkage gear to rotate, and then the gear drives the other rack to move, thereby realizing the movement of the other splint assembly, and realizing the reverse movement of the two splint assemblies.

[0025] In this embodiment, in order to further realize the installation of the driving assembly and avoid interference between the driving assembly clamping plate assembly and the supporting base, a gear groove 11 is opened in the middle of the base plate, and the linkage gear is connected to the gear groove through a bearing for horizontal rotation. A central axis that cooperates with the bearing is arranged in the middle of the gear groove, and horizontal rack grooves 12 are symmetrically arranged on the front and rear sides of the gear groove on the base plate. The direction of the rack groove corresponds to the sliding direction of the clamping plate assembly, and the middle of the rack groove is connected to the front and rear edges corresponding to the gear groove, and the rack is slidably connected in the rack groove.

[0026] In this embodiment, in order to realize the connection between the rack and the clamping plate assembly, a clamping block 13 is provided on the upper surface of the rack, and a clamping groove 14 is provided on the sliding base corresponding to the clamping block.

[0027] In this embodiment, for the sake of reasonable design, the push-stop mechanism includes a movable handle 15, and a stop ruler 16 is provided on the plate surface on one side of the push-stop mechanism in the middle of the base plate along the sliding direction of the splint assembly. The movable handle is provided with a tooth 17 that cooperates with the stop rack. When in use, the splint assembly is driven to move by holding the movable handle, and the splint assembly is fixed by the looseness between the tooth and the stop ruler.

[0028] In this embodiment, the movable handle includes a swing arm 18 and a movable arm 19, one end of the swing arm is hinged to the top of the side of the clamping plate assembly away from the bearing base, the other end of the swing arm is hinged to one end of the movable arm, and a slider 20 is hinged to the other end of the movable arm. A vertical slide rail 21 is arranged on the lower part of the side of the clamping plate assembly away from the bearing base, the slider is slidably connected to the vertical slide rail, the spline is installed on the slider, and a limit block is installed on the upper end of the vertical slide rail to prevent the slider from falling out upwards, and the spline is loosened by sliding the slider.

[0029] In this embodiment, a clearance groove 22 is provided on the bottom of the sliding base corresponding to the stop ruler, and the vertical slide rail is located on the clearance groove, so that the vertical slide rail will not interfere with the stop ruler.

[0030] In this embodiment, for the sake of reasonable design, the tooth shape of the stop ruler strip and the tooth shape of the insert gear are both right-angle cross-section teeth.

[0031] In this embodiment, in order to ensure reasonable design, an inverted trapezoidal cross-section slide rail 23 is provided on the base, the gear groove and the rack slide groove are opened on the inverted trapezoidal cross-section slide rail, a trapezoidal cross-section slide groove 24 is provided corresponding to the inverted trapezoidal cross-section slide rail under the sliding base and the bearing base, and the stop ruler is installed on the inverted trapezoidal cross-section slide rail.

[0032] In this embodiment, photosensitive resin is used to print the base plate, the supporting base, and the clamping plate assembly using light-curing rapid prototyping 3D printing technology.

[0033] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many feasible numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the utility model, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the utility model.

[0034] If the words "first", "second" and so on are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish the components. Unless otherwise stated, the above words have no special meaning.

[0035] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0036] In addition, the orientations or positional relationships indicated by terms such as "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" used in any of the technical solutions disclosed in the above-mentioned utility model are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent. Unless otherwise stated, the terms used to indicate shapes used in any of the technical solutions disclosed in the above-mentioned utility model include shapes that are approximate, similar or close to them.

[0037] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated molding process.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A semi-automatic ankle joint bracket for 3D printing magnetic resonance imaging, characterized in that: It includes a base plate, a bearing base is installed in the middle of the base plate, and clamping plate assemblies are symmetrically slidably connected on the left and right sides of the bearing base on the base plate. The two clamping plate assemblies move in opposite directions. A driving assembly for driving the two clamping plate assemblies to be linked is installed on the middle of the base plate under the bearing base, and a push-stop mechanism is installed on one of the clamping plate assemblies.

2. The ankle joint semi-automatic support according to claim 1, characterized in that; A placement groove is provided on the upper surface of the bearing base, and the bearing base is clamped on the bottom plate. The splint assembly includes a sliding base, and a vertical arc-shaped clamping plate is installed on the sliding base. The left and right arc-shaped clamping plates and the placement groove form an ankle joint fixing area.

3. The semi-automatic ankle joint support according to claim 2, characterized in that; The driving assembly comprises a linkage gear, and racks are meshed on both the front and rear sides of the linkage gear, and the two racks are respectively connected to the corresponding clamping plate assemblies.

4. The semi-automatic ankle joint support according to claim 3, characterized in that; A gear groove is provided in the middle of the base plate, and the linkage gear is horizontally rotatably connected in the gear groove. Horizontal rack grooves are symmetrically provided on the base plate on the front and rear sides of the gear groove. The direction of the rack groove corresponds to the sliding direction of the splint assembly. The middle of the rack groove is connected to the front and rear edges corresponding to the gear groove, and the rack is slidably connected in the rack groove.

5. The semi-automatic ankle joint support according to claim 3, characterized in that; A clamping block is arranged on the upper surface of the rack, and a clamping groove is arranged on the sliding base corresponding to the clamping block.

6. The semi-automatic ankle joint support according to claim 4, characterized in that; The push-stop mechanism comprises a movable handle, a stop ruler is arranged on the plate surface on one side of the push-stop mechanism in the middle of the bottom plate along the sliding direction of the clamping plate assembly, and a toothing which cooperates with the stop rack is arranged on the movable handle.

7. The semi-automatic ankle joint support according to claim 6, characterized in that; The movable handle includes a swing arm and a movable arm, one end of the swing arm is hinged to the top of the clamping plate assembly away from the bearing base, the other end of the swing arm is hinged to one end of the movable arm, and a slider is hinged on the other end of the movable arm. A vertical slide rail is provided on the lower part of the clamping plate assembly away from the bearing base, the slider is slidably connected to the vertical slide rail, and the spline is installed on the slider.

8. The ankle joint semi-automatic support according to claim 6, characterized in that; A clearance groove is arranged on the bottom of the sliding base corresponding to the stop ruler strip.

9. The semi-automatic ankle joint support according to claim 6, characterized in that; The tooth shape of the stop ruler strip and the tooth shape of the insert gear are both right-angle cross-section teeth.

10. The semi-automatic ankle joint support according to claim 6, characterized in that; The base is provided with an inverted trapezoidal cross-section slide rail, the gear groove and the rack slide groove are opened on the inverted trapezoidal cross-section slide rail, the sliding base and the bearing base are provided with trapezoidal cross-section slide grooves corresponding to the inverted trapezoidal cross-section slide rail, and the stop ruler is installed on the inverted trapezoidal cross-section slide rail.

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