Auxiliary positioning device for lower limb ultrasonic imaging
By designing a multi-joint fixation device, the problem of inconsistent joint angles in lower limb ultrasound imaging is solved, and the stable maintenance and multi-angle evaluation of the lower limb posture of the subject is achieved, adapting to different subjects and environments.
Patent Information
- Application Number
- CN202421919098.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The lack of joint fixation devices specifically used for lower limb ultrasound imaging in the prior art, resulting in inconsistent joint angles that affect the assessment of soft tissue mechanical properties, and the existing devices cannot flexibly adapt to different subjects and environments.
An auxiliary positioning device including a base plate, a thigh support telescopic lifting mechanism, a calf telescopic rotating mechanism and a foot sliding lifting mechanism is designed, and a combined an ankle and knee joint angle measuring instrument can achieve multi-joint fixation and posture maintenance.
It realizes stable maintenance of the lower limb posture of the subject, adapts to different subjects and environments, facilitates ultrasound imaging of the lower limbs, and can be flexibly adjusted to adapt to multiple angles of evaluation.
Smart Images
Figure CN223081680U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of auxiliary ultrasonic elastography, and particularly relates to an auxiliary positioning device for lower limb ultrasonic imaging. Background Technique
[0002] Ultrasonic elastography is a new technology that can objectively and quantitatively evaluate the mechanical properties of soft tissues. In the use of elastography to evaluate the physical properties of the locomotor system, the lower limbs are the most widely used part. It is generally believed that joint angles have a great influence on the mechanical properties of soft tissues. This is because when the joint angle is changed, soft tissues such as muscles, tendons, and ligaments are stretched or compressed to varying degrees. Therefore, whether the joint angles at the measurement sites are consistent in two elastographies is the greatest influencing factor in elastography of the locomotor system. Maintaining posture and movement requires the joints to be at different angles. In order to comprehensively understand the biomechanical performance of movement, when performing elastography, it is often necessary to evaluate the lower limb soft tissues at multiple angles.
[0003] At present, there is no special lower limb joint fixator for the ultrasound department. Rehabilitation fixators are mostly used. Such fixators can usually only fix one joint and ignore the influence of adjacent joints. The isokinetic muscle strength testing system can perform multi-joint fixation, but this instrument does not have the function of measuring joint angles, and it is large in size and has high environmental requirements, making it difficult to be flexibly applied in ultrasound work. The main functions of the above two joint angle fixation methods are not for ultrasound, and they do not consider fully exposing the entire lower limb skin. The parts at the support plate or cross bar cannot place the probe, which limits the application of ultrasonic elastography in lower limb soft tissues.
[0004] Therefore, it is a problem to be solved for us to assist the lower limbs of the subject to maintain a certain posture during lower limb ultrasonic imaging. Content of the Utility Model
[0005] In view of the above analysis, the utility model aims to provide an auxiliary positioning device for lower limb ultrasonic imaging to solve the problem that there is no device to assist the lower limbs of the subject to maintain a certain posture during lower limb ultrasonic imaging in the prior art.
[0006] The purpose of the utility model is mainly achieved through the following technical solutions:
[0007] The utility model provides an auxiliary positioning device for lower limb ultrasonic imaging, which includes a bottom plate, a thigh support telescopic lifting mechanism, a calf telescopic rotating mechanism, and a foot sliding lifting mechanism; the thigh support telescopic lifting mechanism and the foot sliding lifting mechanism are respectively arranged on both sides of the upper surface of the bottom plate, and the calf telescopic rotating mechanism is installed between the thigh support telescopic lifting mechanism and the foot sliding lifting mechanism;
[0008] The thigh support telescopic lifting mechanism includes a synchronous lifting component, a thigh support length adjustment component, and a thigh support component; the synchronous lifting component can drive the thigh support length adjustment component and the thigh support component to rise or fall synchronously as a whole; the thigh support length adjustment component can drive the thigh support component to expand and contract.
[0009] Further, the synchronous lifting component includes a first gear, a second gear, a third gear, a first rotating lever, a closed toothed belt, a first hollow internal threaded rod, a first threaded rod, a second hollow internal threaded rod, and a second threaded rod; the second hollow internal threaded rod and the first hollow internal threaded rod are both fixed in the middle of the second gear and the third gear, the second threaded rod is threadedly connected inside the second hollow internal threaded rod, the first threaded rod is threadedly connected inside the first hollow internal threaded rod, the first gear, the second gear, and the third gear are driven by the closed toothed belt, and the first rotating lever is fixed outside the transmission shaft at the lower end of the first gear.
[0010] Further, the first hollow internal threaded rod, the second hollow internal threaded rod, and the transmission shaft are all connected to the bottom plate through bearing seats.
[0011] Further, the first rotating lever can expand and contract.
[0012] Further, the thigh support length adjustment component includes a first fixed block, a third threaded rod, a rotating handwheel, a second fixed block, and an anti-rotation sliding rod; the anti-rotation sliding rod is fixed on one side of the second fixed block, and the second fixed block is rotatably connected to the third threaded rod, the rotating handwheel is installed at one end of the third threaded rod, the first fixed block is slidably connected to the anti-rotation sliding rod, and the first fixed block is threadedly connected to the third threaded rod.
[0013] Further, the thigh support component includes a first thigh support plate, a first telescopic rod, and a second thigh support plate; the first thigh support plate and the second thigh support plate are connected by the first telescopic rod.
[0014] Further, the calf telescopic and rotating mechanism includes a hollow sub-rod, a hollow mother-rod, a positioning pin, a foot pedal, and a support rod; the support rod is hinged to both sides at one end of the foot pedal, and the hollow mother-rod is hinged to both sides at the other end of the foot pedal, the hollow sub-rod is slidably sleeved inside the hollow mother-rod, and the positional relationship between the hollow mother-rod and the hollow sub-rod is fixed by a pin hole and a positioning pin.
[0015] Further, one end of the hollow sub-rod is hinged to the second thigh support plate of the synchronous lifting component.
[0016] Further, the foot sliding lifting mechanism includes a fourth threaded rod, a fourth hollow internal threaded rod, a second lever, a slider with holes, and a porous slide rail; the fourth hollow internal threaded rod is in threaded connection with the fourth threaded rod, and the second lever is installed on the outer side of the fourth hollow internal threaded rod. The lower end of the fourth hollow internal threaded rod is installed on the slider with holes through a bearing seat. The slider with holes can slide on the porous slide rail, and the relative position between the slider with holes and the porous slide rail is fixed by a hole rod.
[0017] Further, it further includes an ankle joint angle measuring instrument and a knee joint angle measuring instrument. The knee joint angle measuring instrument is fixed at the hinge joint between the thigh support telescopic lifting mechanism and the calf telescopic rotating mechanism, and the ankle joint angle measuring instrument is fixed at the hinge joint between the foot pedal of the calf telescopic rotating mechanism and the hollow mother rod.
[0018] Compared with the prior art, the present utility model can at least achieve one of the following beneficial effects:
[0019] 1. The auxiliary positioning device for lower limb ultrasonic elastography provided by the present utility model enables the lower limbs of the measured person to maintain a certain posture with its assistance through the settings of the thigh support telescopic lifting mechanism, the calf telescopic rotating mechanism, and the foot sliding lifting mechanism, so as to facilitate lower limb ultrasonic imaging.
[0020] 2. The auxiliary positioning device for lower limb ultrasonic imaging provided by the present utility model can adapt to chairs of different heights for the measured person and can adapt to different leg lengths of the measured person through the settings of the synchronous lifting assembly, the thigh support length adjustment assembly, and the thigh support assembly, and can achieve good adaptation to different measured persons.
[0021] 3. The auxiliary positioning device for lower limb ultrasonic imaging provided by the present utility model can facilitate the determination of the lower limb posture of the measured person through the settings of the ankle joint angle measuring instrument and the knee joint angle measuring instrument.
[0022] Other features and advantages of the present utility model will be described in the subsequent description, and some will become obvious from the description or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the written description and the drawings. Description of the Drawings
[0023] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present utility model. Throughout the drawings, the same reference signs represent the same components.
[0024] Figure 1 It is a schematic structural diagram of the auxiliary positioning device for lower limb ultrasonic imaging of the present utility model.
[0025] Figure 2 It is a schematic structural diagram of the thigh support telescopic lifting mechanism of the auxiliary positioning device for lower limb ultrasound imaging of the present utility model.
[0026] Figure 3 It is a schematic structural diagram of the calf telescopic rotation mechanism and the foot sliding lifting mechanism of the auxiliary positioning device for lower limb ultrasound imaging of the present utility model.
[0027] Reference numerals:
[0028] 1. Bottom plate, 2. Thigh support telescopic lifting mechanism, 3. Calf telescopic rotation mechanism, 4. Foot sliding lifting mechanism, 5. Ankle joint angle measuring instrument, 6. Knee joint angle measuring instrument;
[0029] 21. Synchronous lifting assembly, 22. Thigh support length adjusting assembly, 23. Thigh support assembly;
[0030] 211. First gear, 212. Second gear, 213. Third gear, 214. First rotating lever, 215. Closed toothed belt, 216. First hollow inner threaded rod, 217. First threaded rod, 218. Second hollow inner threaded rod, 219. Second threaded rod;
[0031] 221. First fixed block, 222. Third threaded rod, 223. Rotating handwheel, 224. Second fixed block, 225. Anti-rotation slide bar;
[0032] 231. First thigh support plate, 232. First telescopic rod, 233. Second thigh support plate;
[0033] 301. Hollow sub-rod, 302. Hollow mother-rod, 303. Positioning pin, 304. Foot pedal, 305. Support rod;
[0034] 401. Fourth threaded rod, 402. Fourth hollow inner threaded rod, 403. Second lever, 404. Slider with hole, 405. Multi-hole slide rail, 406. Hole rod. Detailed implementation manners
[0035] The following will specifically describe the preferred embodiments of the present utility model with reference to the accompanying drawings, wherein the accompanying drawings form a part of the present utility model and are used together with the embodiments of the present utility model to explain the principle of the present utility model.
[0036] This embodiment provides an auxiliary positioning device for lower limb ultrasound imaging, as Figure 1As shown, it includes a bottom plate 1, a thigh support telescopic lifting mechanism 2, a calf telescopic rotating mechanism 3, and a foot sliding lifting mechanism 4. On both sides of the upper surface of the bottom plate 1, the thigh support telescopic lifting mechanism 2 and the foot sliding lifting mechanism 4 are respectively provided, and the calf telescopic rotating mechanism 3 is installed between the thigh support telescopic lifting mechanism 2 and the foot sliding lifting mechanism 4.
[0037] The thigh support telescopic lifting mechanism 2 functions to support the thigh of the subject and can be lifted and telescoped to adapt to different subjects. The lifting is used to adapt to the different leg heights of the subject when sitting on seats of different heights, and the telescoping is used to adapt to subjects with different thigh lengths.
[0038] The calf telescopic rotating mechanism 3 functions to support the calf and foot of the subject and can be telescoped to adapt to the calf lengths of different subjects.
[0039] Preferably, as Figure 1 shown, the thigh support telescopic lifting mechanism 2 includes a synchronous lifting component 21, a thigh support length adjustment component 22, and a thigh support component 23. The synchronous lifting component 21 can drive the thigh support length adjustment component 22 and the thigh support component 23 to rise or fall synchronously as a whole. The thigh support length adjustment component 22 can drive the thigh support component 23 to telescope.
[0040] Preferably, as Figure 2 shown, the synchronous lifting component 21 includes a first gear 211, a second gear 212, a third gear 213, a first rotating lever 214, a closed toothed belt 215, a first hollow inner threaded rod 216, a first threaded rod 217, a second hollow inner threaded rod 218, and a second threaded rod 219. In the middle of both the second gear 212 and the third gear 213, the second hollow inner threaded rod 218 and the first hollow inner threaded rod 216 are fixed. The second threaded rod 219 is threadedly connected to the second hollow inner threaded rod 218, and the first threaded rod 217 is threadedly connected to the first hollow inner threaded rod 216. The first gear 211, the second gear 212, and the third gear 213 are driven by the closed toothed belt 215, and the first rotating lever 214 is fixed to the outer side of the transmission shaft at the lower end of the first gear 211.
[0041] The first rotating lever 214 drives the first gear 211 to rotate. The first gear 211 drives the second gear 212 and the third gear 213 to rotate through the closed toothed belt 215. The second gear 212 and the third gear 213 drive the second hollow inner threaded rod 218 and the first hollow inner threaded rod 216 to rotate. The second threaded rod 219 and the first threaded rod 217 rise or fall under their rotational action, thereby driving the thigh support length adjustment assembly 22 and the thigh support assembly 23 to rise or fall.
[0042] Preferably, the first hollow inner threaded rod 216, the second hollow inner threaded rod 218 and the transmission shaft are all connected to the bottom plate 1 through bearing seats.
[0043] Preferably, the first rotating lever 214 is telescopic.
[0044] Preferably, as Figure 2 shown, the thigh support length adjustment assembly 22 includes a first fixing block 221, a third threaded rod 222, a rotating handwheel 223, a second fixing block 224 and an anti-rotation slide rod 225; one side of the second fixing block 224 is fixed with the anti-rotation slide rod 225, and the second fixing block 224 is rotatably connected to the third threaded rod 222. One end of the third threaded rod 222 is installed with the rotating handwheel 223. The first fixing block 221 is slidably connected to the anti-rotation slide rod 225, and the first fixing block 221 is threadedly connected to the third threaded rod 222.
[0045] When the rotating handwheel 223 is rotated, the rotating handwheel 223 drives the third threaded rod 222 to rotate. The third threaded rod 222 approaches or moves away from the first fixing block 221 under the action of the threaded connection, thereby realizing the adjustment of the thigh support length.
[0046] Preferably, as Figure 2 shown, the thigh support assembly 23 includes a first thigh support plate 231, a first telescopic rod 232 and a second thigh support plate 233; the first thigh support plate 231 and the second thigh support plate 233 are connected by the first telescopic rod 232.
[0047] Preferably, as Figure 3 shown, the calf telescopic and rotating mechanism 3 includes a hollow sub-rod 301, a hollow mother rod 302, a positioning pin 303, a foot pedal 304 and a support rod 305; both sides of one end of the foot pedal 304 are hinged with the support rod 305, and both sides of the other end of the foot pedal 304 are hinged with the hollow mother plate. The hollow sub-rod 301 that can slide is sleeved inside the hollow mother rod 302. The positional relationship between the hollow mother rod 302 and the hollow sub-rod 301 is fixed through pin holes and the positioning pin 303.
[0048] Preferably, one end of the hollow sub-rod 301 is hinged to the second thigh support plate 233 of the synchronous lifting assembly 21.
[0049] Preferably, as Figure 3 shown, the foot sliding lifting mechanism 4 includes a fourth threaded rod 401, a fourth hollow inner threaded rod 402, a second lever 403, a perforated slider 404, and a perforated slide rail 405; the fourth hollow inner threaded rod 402 is threadedly connected to the fourth threaded rod 401, and the second lever 403 is installed on the outer side of the fourth hollow inner threaded rod 402. The lower end of the fourth hollow inner threaded rod 402 is installed on the perforated slider 404 through a bearing seat. The perforated slider 404 can slide on the perforated slide rail 405, and the relative position between the perforated slider 404 and the perforated slide rail 405 is fixed by a hole rod 406.
[0050] Preferably, as Figure 1 shown, it further includes an ankle joint angle measuring instrument 5 and a knee joint angle measuring instrument 6. The knee joint angle measuring instrument 6 is fixed at the hinge joint between the thigh support telescopic lifting mechanism 2 and the calf telescopic rotating mechanism 3, and the ankle joint angle measuring instrument 5 is fixed at the hinge joint between the foot pedal 304 of the calf telescopic rotating mechanism 3 and the hollow mother rod 302.
[0051] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.
Claims
1. An auxiliary positioning device for lower limb ultrasound imaging, characterized in that, It includes a bottom plate (1), a thigh support telescopic lifting mechanism (2), a calf telescopic rotation mechanism (3), and a foot sliding lifting mechanism (4); on both sides of the upper surface of the bottom plate (1), the thigh support telescopic lifting mechanism (2) and the foot sliding lifting mechanism (4) are respectively provided, and the calf telescopic rotation mechanism (3) is installed between the thigh support telescopic lifting mechanism (2) and the foot sliding lifting mechanism (4); The thigh support telescopic lifting mechanism (2) includes a synchronous lifting component (21), a thigh support length adjustment component (22), and a thigh support component (23); the synchronous lifting component (21) can drive the thigh support length adjustment component (22) and the thigh support component (23) to rise or fall synchronously as a whole; the thigh support length adjustment component (22) can drive the thigh support component (23) to expand and contract.
2. The auxiliary positioning device for lower limb ultrasonic imaging according to claim 1, wherein The synchronous lifting component (21) includes a first gear (211), a second gear (212), a third gear (213), a first rotating lever (214), a closed toothed belt (215), a first hollow internal threaded rod (216), a first threaded rod (217), a second hollow internal threaded rod (218), and a second threaded rod (219); in the middle of the second gear (212) and the third gear (213), the second hollow internal threaded rod (218) and the first hollow internal threaded rod (216) are both fixed. The second hollow internal threaded rod (218) is internally threaded with the second threaded rod (219), the first hollow internal threaded rod (216) is internally threaded with the first threaded rod (217), and the first gear (211), the second gear (212), and the third gear (213) are driven by the closed toothed belt (215), and the first rotating lever (214) is fixed on the outside of the transmission shaft at the lower end of the first gear (211).
3. The auxiliary positioning device for lower limb ultrasound imaging according to claim 2, characterized in that The first hollow internal threaded rod (216), the second hollow internal threaded rod (218), and the transmission shaft are all connected to the bottom plate (1) through bearing seats.
4. The auxiliary positioning device for lower limb ultrasonic imaging according to claim 2, characterized in that, The first rotating lever (214) can expand and contract.
5. The auxiliary positioning device for lower limb ultrasonic imaging according to claim 1, wherein The thigh support length adjustment component (22) includes a first fixed block (221), a third threaded rod (222), a rotating handwheel (223), a second fixed block (224), and an anti-rotation slide rod (225); on one side of the second fixed block (224), the anti-rotation slide rod (225) is fixed, and the second fixed block (224) is rotatably connected to the third threaded rod (222). One end of the third threaded rod (222) is equipped with the rotating handwheel (223). The first fixed block (221) is slidably connected to the anti-rotation slide rod (225), and the first fixed block (221) is threadedly connected to the third threaded rod (222).
6. The auxiliary positioning device for lower limb ultrasonic imaging according to claim 1, wherein The thigh support assembly (23) includes a first thigh support plate (231), a first telescopic rod (232), and a second thigh support plate (233); the first thigh support plate (231) and the second thigh support plate (233) are connected by the first telescopic rod (232).
7. The auxiliary positioning device for lower limb ultrasonic imaging according to claim 1, characterized in that, The calf telescopic and rotating mechanism (3) includes a hollow sub-rod (301), a hollow mother-rod (302), a positioning pin (303), a foot pedal (304), and a support rod (305); both sides of one end of the foot pedal (304) are hinged with the support rod (305), and both sides of the other end of the foot pedal (304) are hinged with the hollow mother-rod (302). The hollow sub-rod (301) that can slide is sleeved inside the hollow mother-rod (302), and the positional relationship between the hollow mother-rod (302) and the hollow sub-rod (301) is fixed by a pin hole and the positioning pin (303).
8. The auxiliary positioning device for lower limb ultrasonic imaging according to claim 7, characterized in that, One end of the hollow sub-rod (301) is hinged with the second thigh support plate (233) of the synchronous lifting assembly (21).
9. The auxiliary positioning device for lower limb ultrasonic imaging according to claim 1, wherein The foot sliding and lifting mechanism (4) includes a fourth threaded rod (401), a fourth hollow inner threaded rod (402), a second lever (403), a slider with holes (404), and a multi-hole slide rail (405); the fourth hollow inner threaded rod (402) is in threaded connection with the fourth threaded rod (401), and the second lever (403) is installed on the outer side of the fourth hollow inner threaded rod (402). The lower end of the fourth hollow inner threaded rod (402) is installed on the slider with holes (404) through a bearing seat. The slider with holes (404) can slide on the multi-hole slide rail (405), and the relative position between the slider with holes (404) and the multi-hole slide rail (405) is fixed by a hole rod (406).
10. The auxiliary positioning device for lower limb ultrasonic imaging according to claim 1, wherein It further includes an ankle joint angle measuring instrument (5) and a knee joint angle measuring instrument (6). The knee joint angle measuring instrument (6) is fixed at the hinge joint between the thigh support telescopic and lifting mechanism (2) and the calf telescopic and rotating mechanism (3), and the ankle joint angle measuring instrument (5) is fixed at the hinge joint between the foot pedal (304) of the calf telescopic and rotating mechanism (3) and the hollow mother-rod (302).