Lower limb fixing device for CT imaging

Abstract

The utility model discloses a lower limb fixing device during CT (computed tomography) imaging, which is characterized in that a lower limb supporting, fixing and adjusting mode is designed compared with a traditional mode that a restraint strap is matched with a flat plate body to realize lower limb fixing or a mode that a lower limb protector is worn during examination; thighs and shanks of lower limbs are supported by the thigh supporting plate and the shank supporting plate respectively, the thigh supporting plate and the shank supporting plate relatively rotate with the same rotating shaft as the center, the bottom ends of the thigh supporting plate and the shank supporting plate can be rotationally connected with the bottom plate and can slide, and flexible adjustment of the bending angles of the thighs and the shanks is achieved; the adjusted relative angle can be visually read by the arc-shaped track on the side surface; the thigh supporting plate and the shank supporting plate are each provided with a fastening structure in a sliding mode and provided with a plurality of belt holes, the thighs and the shanks of the lower limbs can be pressed through the fastening mechanisms according to actual needs, or from the perspective of facilitating material taking, the thighs and the shanks of the lower limbs are bound and fixed by selecting belt body structures such as external restraint belts and bandages.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a lower limb fixing device during CT imaging. Background Art

[0002] CT examination is a relatively advanced medical imaging technology currently used in clinical practice. Its principle is to use X-rays to scan the patient's body structure. After the scan, the computer will convert the scan information into image information output, and the radiologist will issue a diagnosis report. CT examination can be applied to any part of the body, including the head, neck, chest, abdomen, spine, limbs and other organs. The diagnosis and differential diagnosis are of great significance. In the clinical diagnosis of diseases, CT scanning has become a conventional detection method, especially for bone and soft tissue lesions. It has good sensitivity and specificity, and can better display the range of lesions, which is conducive to preoperative planning and comparative observation before and after treatment.

[0003] When examining the joints of the lower limbs, for some examinees with low compliance or special examination positions, the examinee's lower limbs are easy to move, and the bilateral joints and bones are not easy to keep on the same scanning line, which affects the image quality and makes it difficult to compare the two sides, making it difficult to diagnose the disease. At the same time, because the joints are not on the same scanning line, the number of scans increases, causing unnecessary X-rays and machine wear for the patient, which brings great inconvenience to clinical work. In order to solve the above problems, the existing operation usually uses a restraint belt and a flat plate to tie the examinee's lower limbs to fix the lower limbs, or the examinee wears lower limb protective gear to fix the patient's lower limbs during CT examination;

[0004] However, the above-mentioned simple operation usually has the following shortcomings: 1. For trauma patients, it is not easy for the patient's lower limbs to maintain flexion, or it is not easy to straighten and flatten after flexion. The coordination between the restraint belt and the plate is relatively inflexible and cannot adapt to subjects with different degrees of flexion of the lower limbs; 2. The position and number of the restraint belts are single and fixed, and cannot effectively adapt to subjects with different lower limb lengths; 3. The restraining force of only the restraint belt is insufficient, and the lower limbs of subjects with low compliance cannot be stably restrained; 4. The degree of flexion of the patient's lower limbs cannot be observed, resulting in the inability to accurately keep the patient's bilateral lower limbs on the same scanning line.

[0005] Therefore, it is necessary to disclose a lower limb fixation device during CT imaging to improve the above-mentioned deficiencies. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a lower limb fixing device for CT imaging, which is designed in the support, fixation and adjustment mode of the lower limbs, and the thigh support plate and the calf support plate respectively support the thigh and the calf of the lower limb, and the relative angle of the thigh support plate and the calf support plate can be adjusted, and the adjusted relative angle can be visually read by the arc track on the side; both the thigh support plate and the calf support plate are slidably mounted with a fastening structure, and a plurality of belt holes are opened, and the thigh and the calf of the lower limb can be pressed by the fastening mechanism according to actual needs, or the thigh and the calf of the lower limb can be fastened by an external belt structure;

[0007] In order to achieve the above technical objectives, the utility model is implemented through the following technical solutions:

[0008] A lower limb fixing device for CT imaging, comprising: a bottom plate, a thigh support plate, a calf support plate, a rotating shaft, a fastening mechanism, and a foot support plate;

[0009] A thigh support plate and a calf support plate are respectively installed on both sides of the bottom plate; the thigh support plate and the calf support plate are rotatably connected with the axis of the same rotating shaft as the center; the bottom ends of the thigh support plate and the calf support plate are rotatably connected with the bottom plate through two sliders 1 and two sliders 2 respectively; the sliders 1 and 2 slide on the bottom plate to change the relative angle between the thigh support plate and the calf support plate; the front-to-back width of the thigh support plate is greater than the front-to-back width of the calf support plate;

[0010] Two fastening mechanisms are slidably mounted on the thigh support plate and the calf support plate respectively; a single fastening mechanism comprises a bracket, a pressing plate, a sliding plate, and a screw rod; the pressing plate is integrally connected with the sliding plate, and the sliding plate is driven by the screw rod mounted on the bracket to drive the pressing plate to slide up and down relative to the bracket;

[0011] The thigh support plate and the calf support plate are provided with a protruding indicator column 1 and an indicator column 2 on the same side, respectively, the indicator column 1 and the indicator column 2 are inserted into the arc track together, and the arc track is provided with an angle scale, and the angle scale indicates the relative angle between the thigh support plate and the calf support plate; the end of the calf support plate is slidably mounted with a foot support plate;

[0012] Furthermore, two pairs of slide rails are symmetrically provided on both sides of the bottom plate, which are slide rail one and slide rail two for sliding the two slide blocks one and the two slide blocks two; the limiting methods after the two slide blocks one and the two slide blocks two slide include but are not limited to, latch limiting and tightening knob limiting;

[0013] Furthermore, a plurality of parallel holes are provided on both sides of the thigh support plate and the calf support plate; the holes are long strip holes;

[0014] Furthermore, the bracket is an N-shaped structure, with vertical poles on both sides and a connecting rod integrally connected to the two poles on the top; the two ends of the slide plate are respectively sleeved on the two poles and slide on the poles; the pressing plate is a wide plate structure with an arc track, and the outer convex direction of the arc track is upward;

[0015] Furthermore, two sliders 3 are respectively provided at the bottom ends of the two vertical rods; slide rails 3 are respectively provided on both sides of the thigh support plate and the calf support plate; the two vertical rods slide on the thigh support plate and the calf support plate through the cooperation of the sliders 3 and the slide rails 3; the limiting methods after the two vertical rods slide include but are not limited to, latch limiting and tightening knob limiting;

[0016] Furthermore, two sliders 4 are provided on both sides of the bottom end of the foot support plate, and the foot support plate slides on the calf support plate through the cooperation between the sliders 4 and the slide rails 3, and the limiting methods after sliding include but are not limited to the limiting by latches and the limiting by tightening knobs; the foot support plate is at an angle to the calf support plate;

[0017] Furthermore, the arc-shaped track is fixedly connected to the rotating shaft at the end of the rotating shaft through a connecting column;

[0018] The beneficial effects of the utility model are:

[0019] The utility model provides a lower limb fixation device for CT imaging. Compared with the traditional method of fixing the lower limbs by combining a restraint belt with a flat plate or the method of the subject wearing a lower limb protective gear, the lower limb support fixation and adjustment method is designed;

[0020] 1. The thigh and calf support plates support the thigh and calf of the lower limbs respectively. The thigh and calf support plates rotate relative to each other around the same rotating shaft, and the bottom ends can be rotatably connected to the bottom plate and can slide, thereby realizing flexible adjustment of the flexion angles of the thigh and calf. The adjusted relative angle can be visually read from the arc track on the side;

[0021] 2. Both the thigh support plate and the calf support plate are slidably mounted with a fastening structure and are provided with a plurality of belt holes. The thigh and calf of the lower limbs can be compressed by the fastening mechanism according to actual needs, or external restraint belts, bandages and other belt structures can be selected to bind and fix the thigh and calf of the lower limb from the perspective of easy material acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of the utility model from another perspective;

[0025] Figure 3 It is a main structural schematic diagram of the utility model;

[0026] Figure 4 The utility model Figure 1 The enlarged structural diagram at A in the middle;

[0027] Figure 5 The utility model Figure 2 The enlarged structural diagram at B in the middle;

[0028] Figure 6 It is a fracture view of a side view of the bottom plate of the utility model;

[0029] Figure 7 It is an exploded view of the fastening mechanism, the calf support plate and the foot support plate of the utility model;

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1-bottom plate, 101-slide rail one, 102-slide rail two, 103-latch one, 2-thigh support plate, 201-slider one, 202-indicator column one, 3-calf support plate, 301-slider two, 303-indicator column two, 4-rotating shaft, 401-connecting column, 5-fastening mechanism, 501-bracket, 5011-vertical pole, 5012-connecting rod, 5013-slider three, 502-pressing plate, 503-slide plate, 504-screw rod, 505-slide rail three, 506-latch two, 6-foot support plate, 601-slider four, 602-latch three, 7-arc track, 701-angle scale, 8-with hole. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example 1

[0034] See also Figure 1-Figure 7 In this embodiment, a lower limb fixing device for CT imaging includes: a base plate 1, a thigh support plate 2, a calf support plate 3, a rotating shaft 4, a fastening mechanism 5, and a foot support plate 6;

[0035] In this embodiment, a thigh support plate 2 and a calf support plate 3 are respectively installed on both sides of the bottom plate 1; the thigh support plate 2 and the calf support plate 3 are rotatably connected with the axis of the same rotating shaft 4 as the center; the bottom ends of the thigh support plate 2 and the calf support plate 3 are rotatably connected with the bottom plate 1 through two sliders 1 201 and two sliders 2 301 respectively; the sliders 1 201 and 2 301 slide on the bottom plate 1, so that the relative angle between the thigh support plate 2 and the calf support plate 3 changes; the front and rear width of the thigh support plate 2 is greater than the front and rear width of the calf support plate 3; the thigh support plate 2, the calf support plate 3 and the bottom plate 1 form a triangular stable structure, and after the bottom ends of the thigh support plate 2 and the calf support plate 3 slide, the relative angle between the two changes, that is, they can adapt to different flexion degrees of the lower limbs;

[0036] In this embodiment, two fastening mechanisms 5 are slidably installed on the thigh support plate 2 and the calf support plate 3 respectively; the single fastening mechanism 5 includes a bracket 501, a pressure plate 502, a slide plate 503, and a screw rod 504; the pressure plate 502 is integrally connected with the slide plate 503, and the slide plate 503 is driven by the screw rod 504 installed on the bracket 501, driving the pressure plate 502 to slide up and down relative to the bracket 501; the lower limbs penetrate into the space between the pressure plate 502 and the bottom plate 1, the lower surface of the lower limb is supported by the thigh support plate 2 and the calf support plate 3, and the upper surface is compressed and fixed by the fastening mechanism 5, so that the lower limb can be stably supported and fixed from the upper and lower surfaces of the lower limb;

[0037] In this embodiment, the thigh support plate 2 and the calf support plate 3 are respectively provided with a protruding indicator column 1 202 and an indicator column 2 303 on the same side, and the indicator column 1 202 and the indicator column 2 303 are inserted into the arc track 7 together, and an angle scale 701 is provided on the arc track 7, and the angle scale 701 indicates the relative angle between the thigh support plate 2 and the calf support plate 3; a foot support plate 6 is slidably installed at the end of the calf support plate 3; the visualization of the relative angle between the thigh support plate 2 and the calf support plate 3 provides data for CT imaging of both sides of the lower limbs on the same scanning line, which is convenient for comparing the imaging results of the lower limbs on both sides;

[0038] In this embodiment, two pairs of slide rails are symmetrically provided on both sides of the bottom plate 1, which are slide rail 101 and slide rail 2 102 for sliding the two slide blocks 1 201 and the two slide blocks 2 301 respectively; the limiting methods of the two slide blocks 1 201 and the two slide blocks 2 301 after sliding include but are not limited to latch limiting and tightening knob limiting;

[0039] In this embodiment, a plurality of parallel belt holes 8 are provided on both sides of the thigh support plate 2 and the calf support plate 3; the belt holes 8 are long strip holes; in actual use, depending on the compliance performance of the subject, the degree of injury, etc., it may not be suitable to use the fastening mechanism 5 for compression and fastening. In this case, an external restraint belt or bandage is used to pass through the belt holes 8 to tie and fix the lower limbs;

[0040] In this embodiment, the bracket 501 is an N-shaped structure, with vertical poles 5011 on both sides and a connecting rod 5012 integrally connected to the two poles 5011 on the top; the two ends of the slide plate 503 are respectively mounted on the two poles 5011 and slide on the poles 5011; the pressing plate 502 is a wide plate structure with an arc track, and the outer convex direction of the arc track is upward; when in use, the lower limbs penetrate into the space between the pressing plate 502 and the support plate, and the pressing plate 502 moves downward to compress and fix the lower limbs;

[0041] In this embodiment, two sliders 3 5013 are respectively provided at the bottom ends of the two vertical rods 5011; slide rails 3 505 are respectively provided on both sides of the thigh support plate 2 and the calf support plate 3; the two vertical rods 5011 slide on the thigh support plate 2 and the calf support plate 3 through the cooperation of the sliders 3 5013 and the slide rails 3 505; the limiting methods after the two vertical rods 5011 slide include but are not limited to latch limiting and tightening knob limiting; the tightening mechanism 5 slides on the thigh support plate 2 or the calf support plate 3, which is to adapt to subjects with different lower limb lengths, and also to adapt to compressing and fixing the lower limbs at different positions of the lower limbs;

[0042] In this embodiment, two sliders 4 601 are provided on both sides of the bottom end of the foot support plate 6. The foot support plate 6 slides on the calf support plate 3 through the cooperation of the sliders 4 601 and the slide rails 3 505. The limiting methods after sliding include but are not limited to the limiting by latches and the limiting by tightening knobs. The foot support plate 6 is at an angle to the calf support plate 3. The foot support plate 6 supports the sole of the subject's foot, so that the bones and muscles of the lower limbs are kept in a normal state rather than a foot drop state, thereby increasing the accuracy of CT imaging.

[0043] In this embodiment, the arc track 7 is fixedly connected to the rotating shaft 4 at the end of the rotating shaft 4 through a connecting column 401;

[0044] In this embodiment, a specific use process of a lower limb fixation device during CT imaging is as follows:

[0045] After the utility model is assembled according to the drawings and the above description, the utility model is placed on the CT inspection equipment as a whole; according to the condition of the lower limbs of the subject, the relative angles of the thigh support plate 2 and the calf support plate 3 are adjusted to a suitable size and fixed; the thigh and calf of the lower limb of the subject are placed on the thigh support plate 2 and the calf support plate 3 respectively; according to the condition of the lower limbs of the subject, the two fastening mechanisms 5 are moved to suitable positions respectively, and the thigh and calf of the lower limb of the subject are compressed and fixed;

[0046] Example 2

[0047] See also Figure 1-Figure 7 Based on the above embodiment 1, in this embodiment, another form of lower limb fixation method is provided. When the subject is seriously injured and cannot withstand the compression and fixation of the fastening mechanism 5, the two fastening mechanisms 5 are slid and removed; the soft belt body of the restraint bandage is externally connected, and the two ends of the belt body are inserted into the belt holes 8 to tie and fix the lower limbs of the subject; because the belt body is made of soft material and has a certain elasticity, the compression on the lower limbs of the subject is lighter and the comfort is better;

[0048] In order to further increase the comfort and applicability of the utility model, a plurality of ventilation holes can be provided on the thigh support plate 2 and the calf support plate 3 to increase the breathability; soft pads can also be provided on the thigh support plate 2, the calf support plate 3 and the foot support plate 6 to increase the comfort performance; when used under CT imaging conditions, the materials of the various components of the utility model should be non-metallic materials.

[0049] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lower limb fixation device for CT imaging, characterized in that: include: Bottom plate, thigh support plate, calf support plate, rotating shaft, fastening mechanism, foot support plate; A thigh support plate and a calf support plate are respectively installed on both sides of the bottom plate; the thigh support plate and the calf support plate are rotatably connected with the axis of the same rotating shaft as the center; the bottom ends of the thigh support plate and the calf support plate are rotatably connected with the bottom plate through two sliders 1 and two sliders 2 respectively; the sliders 1 and 2 slide on the bottom plate to change the relative angle between the thigh support plate and the calf support plate; the front-to-back width of the thigh support plate is greater than the front-to-back width of the calf support plate; Two fastening mechanisms are slidably mounted on the thigh support plate and the calf support plate respectively; a single fastening mechanism comprises a bracket, a pressing plate, a sliding plate, and a screw rod; the pressing plate is integrally connected with the sliding plate, and the sliding plate is driven by the screw rod mounted on the bracket to drive the pressing plate to slide up and down relative to the bracket; The thigh support plate and the calf support plate are respectively provided with a protruding indicator column 1 and an indicator column 2 on the same side, and the indicator column 1 and the indicator column 2 are jointly inserted into an arc track, and an angle scale is provided on the arc track, and the angle scale indicates the relative angle between the thigh support plate and the calf support plate; a foot support plate is slidably installed at the end of the calf support plate.

2. The lower limb fixation device for CT imaging according to claim 1, characterized in that: Two pairs of slide rails are symmetrically opened on both sides of the bottom plate, which are slide rail one and slide rail two for sliding the two sliders one and the two sliders two; the limiting methods after the two sliders one and the two sliders two slide include but are not limited to latch limiting and tightening knob limiting.

3. The lower limb fixation device for CT imaging according to claim 1, characterized in that: A plurality of mutually parallel belt holes are arranged on both sides of the thigh support plate and the calf support plate; the belt holes are long strip holes.

4. The lower limb fixation device for CT imaging according to claim 1, characterized in that: The bracket is an "N"-shaped structure, with vertical poles on both sides and a connecting rod on the top that is integrally connected to the two poles; the two ends of the slide plate are respectively mounted on the two poles and slide on the poles; the pressure plate is a wide plate structure with an arc-shaped track, and the outer convex direction of the arc-shaped track is upward.

5. The lower limb fixation device for CT imaging according to claim 4, characterized in that: Two sliders three are respectively provided at the bottom ends of the two vertical poles; slide rails three are respectively provided on both sides of the thigh support plate and the calf support plate; the two vertical poles slide on the thigh support plate and the calf support plate through the cooperation of the sliders three and the slide rails three; the limiting methods after the two vertical poles slide include but are not limited to, latch limiting and tightening knob limiting.

6. The lower limb fixation device for CT imaging according to claim 5, characterized in that: Two sliding blocks four are provided on both sides of the bottom end of the foot support plate. The foot support plate slides on the calf support plate through the cooperation between the sliding blocks four and the slide rail three. The limiting methods after sliding include but are not limited to latch limiting and tightening knob limiting; the foot support plate is at an angle to the calf support plate.

7. The lower limb fixation device for CT imaging according to claim 1, characterized in that: The arc track is fixedly connected to the rotating shaft at the end of the rotating shaft through a connecting column.

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