A lower limb immobilization device for use after vascular intervention
Patent Information
- Application Number
- CN202520941206.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-05-14
AI Technical Summary
目前相关技术中的医疗机构采用约束带绑扎法，即将患者下肢用布质/弹性约束带固定于床尾栏杆，由于相关技术中的约束带仅固定肢体远端，未锁定髋关节与膝关节，导致患者仍可通过髋关节内旋或膝关节屈曲，间接活动穿刺部位的问题
[0019]1. The hip joint fixation structure, through its multi-dimensional design that restricts joint movement, enhances stability, and improves comfort, effectively addresses the shortcomings of traditional restraint straps in limiting hip joint movement. The U-shaped third protective plate provides multi-directional mechanical restraint, preventing hip flexion/rotation. The third protective plate, with its U-shaped cross-section design, wraps around the anterior, lateral, and posterior sides of the hip joint (see...). Figure 2 This forms a semi-rigid enveloping structure. The first rubber pad is located at the bottom of the inner wall of the U-shaped structure, conforming to the greater trochanter region of the femur to prevent the device from sliding when the patient turns over. The second rubber pad covers the bony prominences on the lateral side of the hip joint (such as the iliac crest), dispersing local pressure through elastic deformation to prevent pressure sores. The hip joint fixation structure is connected to the leg fixation structure via a rigid connecting plate, forming a continuous braking system from the hip to the ankle.
Smart Images
Figure CN224639944U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical devices, and in particular relates to a lower limb immobilization and fixation device for use after vascular intervention. Background Technology
[0002] Interventional vascular procedures (such as percutaneous coronary intervention and lower extremity arteriovenous angioplasty) typically establish an access route by puncturing the femoral or radial artery. Post-procedure, the vascular endothelium at the puncture site is not fully closed. Premature movement or bending of the lower limb can lead to pressure imbalance in the surrounding tissues, causing blood extravasation and hematoma formation, which can compress nerves and blood vessels in severe cases. Therefore, strict lower limb immobilization is necessary post-procedure (usually requiring 6-8 hours of supine immobilization after femoral artery puncture) to maintain stable pressure at the puncture site, promote vascular endothelial repair, and reduce the risk of complications. Currently, some medical institutions use restraint straps to fix the patient's lower limbs to the bed rails with cloth / elastic restraint straps. However, because these restraint straps only fix the distal end of the limb and do not lock the hip and knee joints, patients can still indirectly move the puncture site by internal rotation of the hip joint or flexion of the knee joint. Summary of the Invention
[0003] In view of this, the present invention aims to at least partially solve one of the related technical problems.
[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0005] A lower limb immobilization and fixation device for use after vascular interventional procedures, comprising a hip joint fixation structure and a leg fixation structure;
[0006] One end of the hip joint fixation structure is connected to the leg fixation structure via a connecting plate;
[0007] The leg fixing structure includes a first protective plate, a fixing base, two second protective plates, two sliding rod structures, two telescopic connection structures, and two adjustable fixing mechanisms. The two second protective plates are symmetrically arranged on the front and rear sides of the first protective plate. Each second protective plate is connected to the end of the first protective plate through one of the sliding rod structures. The two telescopic connections are symmetrically arranged. One end of the telescopic connection structure is connected to the first protective plate, and the other end of the telescopic connection structure is connected to the second protective plate.
[0008] Both the first and second protective plates are curved plates that can fit with the human leg.
[0009] The first protective plate is provided with multiple first adjustable straps, and the second protective plate is provided with multiple second adjustable straps;
[0010] The fixing base is disposed on the outer wall of the first protective plate, and the two adjustable fixing mechanisms are symmetrically disposed on the fixing base. The inner end of the adjustable fixing mechanism is connected to the fixing base, and the outer end of the adjustable fixing mechanism is used to connect to the fixing end of the bed side.
[0011] Furthermore, the hip joint fixation structure includes a third protective plate and a third adjustable strap. The third protective plate has a U-shaped cross-section, and the third adjustable strap is disposed on the third protective plate.
[0012] Furthermore, a first rubber pad is provided at the bottom of the inner wall of the third protective plate, and a second rubber pad is provided on the side of the inner wall of the third protective plate.
[0013] Furthermore, the telescopic connection structure includes a telescopic rod, a guide sleeve, two fastening screws, a first fixing block, and a second fixing block. The second fixing block is disposed on the outer wall of the second protective plate, and the first fixing block is disposed on the outer wall of the first protective plate. The telescopic rod is slidably engaged with the guide sleeve. The telescopic rod is connected and fixed to the guide sleeve by two fastening screws. The first fixing block is connected to the end of the telescopic rod, and the second fixing block is connected to the end of the guide sleeve.
[0014] Furthermore, the adjustable fixing mechanism includes a threaded rod, an adjusting sleeve, a threaded sleeve, and a connecting device. One end of the adjusting sleeve is fixedly connected to the fixed base, and the other end of the adjusting sleeve is slidably engaged with the threaded rod. The threaded sleeve is rotatably disposed at the end of the adjusting sleeve, and the threaded sleeve is threadedly engaged with the threaded rod. The connecting device is disposed at the end of the threaded rod away from the adjusting sleeve.
[0015] Furthermore, the connecting device is a snap-fit or a suction cup.
[0016] Furthermore, the sliding rod structure includes multiple sliding rods, which are evenly distributed between the first protective plate and the second protective plate, and both the first and second protective plates slide in cooperation with the sliding rods.
[0017] Furthermore, a plurality of first strip-shaped airbags are arranged on the inner side of the first protective plate, and a plurality of second strip-shaped airbags are arranged on the inner side of the second protective plate.
[0018] Compared with existing technologies, the lower limb immobilization and fixation device for vascular interventional procedures described in this utility model has the following advantages:
[0019] 1. The hip joint fixation structure, through its multi-dimensional design that restricts joint movement, enhances stability, and improves comfort, effectively addresses the shortcomings of traditional restraint straps in limiting hip joint movement. The U-shaped third protective plate provides multi-directional mechanical restraint, preventing hip flexion / rotation. The third protective plate, with its U-shaped cross-section design, wraps around the anterior, lateral, and posterior sides of the hip joint (see...). Figure 2 This forms a semi-rigid enveloping structure. The first rubber pad is located at the bottom of the inner wall of the U-shaped structure, conforming to the greater trochanter region of the femur to prevent the device from sliding when the patient turns over. The second rubber pad covers the bony prominences on the lateral side of the hip joint (such as the iliac crest), dispersing local pressure through elastic deformation to prevent pressure sores. The hip joint fixation structure is connected to the leg fixation structure via a rigid connecting plate, forming a continuous braking system from the hip to the ankle.
[0020] 2. The first protective plate and two second protective plates of the leg fixation structure are both arc-shaped structures that match the curve of the human leg. Through the sliding engagement of the telescopic rod and the guide sleeve, and the locking with fastening screws, the spacing of the protective plates can be quickly adjusted to accommodate different patients. The rotating threaded sleeve drives the threaded rod to extend and retract, precisely controlling the distance between the device and the fixed end on the side of the bed; multiple independent airbags are arranged longitudinally along the inner side of the protective plate, forming a "wave-shaped" pressure interface after inflation, avoiding venous return obstruction caused by linear compression. Attached Figure Description
[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0022] Figure 1 This is a schematic diagram of a lower limb immobilization and fixation device for use after vascular interventional procedures, as described in an embodiment of this utility model.
[0023] Figure 2 This is a schematic diagram showing the distribution of the two retractable connection structures described in an embodiment of the present invention;
[0024] Figure 3 This is a schematic diagram of the connecting plate structure according to an embodiment of the present utility model;
[0025] Figure 4 This is a schematic diagram of the retractable connection structure described in an embodiment of the present utility model;
[0026] Figure 5 This is a schematic diagram of the adjustable fixing mechanism described in an embodiment of the present invention.
[0027] Explanation of reference numerals in the attached figures:
[0028] 100. Third protective plate; 110. First rubber pad; 120. Second rubber pad; 140. Connecting plate; 200. First protective plate; 210. First strip airbag; 220. First adjustable strap; 300. Second protective plate; 310. Second adjustable strap; 320. Second strip airbag; 410. Fixing seat; 500. Adjustable fixing mechanism; 510. Adjusting sleeve; 520. Threaded sleeve; 530. Threaded rod; 540. Connecting device; 600. Telescopic connecting structure; 610. First fixing block; 620. Second fixing block. Detailed Implementation
[0029] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] A lower limb immobilization and fixation device for use after vascular interventional procedures, such as Figure 1 As shown, it includes a hip joint fixation structure and a leg fixation structure; one end of the hip joint fixation structure is connected to the leg fixation structure via a connecting plate 140.
[0034] like Figure 1-2 As shown, the leg fixing structure includes a first protective plate 200, a fixing base 410, two second protective plates 300, two sliding rod structures, two telescopic connection structures 600, and two adjustable fixing mechanisms 500. The two second protective plates 300 are symmetrically arranged on the front and rear sides of the first protective plate 200. Each second protective plate 300 is connected to the end of the first protective plate 200 through a sliding rod structure. The two telescopic connections are symmetrically arranged, with one end of each telescopic connection structure 600 connected to the first protective plate 200. The other end is connected to the second protective plate 300; both the first protective plate 200 and the second protective plate 300 are arc-shaped plates that can conform to the human leg; the first protective plate 200 is provided with multiple first adjustable straps 220, and the second protective plate 300 is provided with multiple second adjustable straps 310; the adjustable straps adopt existing adjustable tightness straps; the sliding rod structure includes multiple sliding rods, which are evenly distributed between the first protective plate 200 and the second protective plate 300, and both the first protective plate 200 and the second protective plate 300 slide in cooperation with the sliding rods. Multiple first strip-shaped airbags 210 are arranged on the inner side of the first protective plate 200, and multiple second strip-shaped airbags 320 are arranged on the inner side of the second protective plate 300. The first protective plate 200 and the two second protective plates 300 of the leg fixing structure are arc-shaped structures that match the curve of the human leg. Through the sliding cooperation of the telescopic rod and the guide sleeve, and the locking with fastening screws, the spacing between the protective plates can be quickly adjusted, thus adapting to different patients. The rotating threaded sleeve 520 drives the threaded rod 530 to extend and retract, precisely controlling the distance between the device and the fixed end on the side of the bed; multiple independent airbags are arranged longitudinally along the inner side of the protective plate, forming a "wave-shaped" pressure interface after inflation, avoiding venous return obstruction caused by linear compression.
[0035] The fixing seat 410 is set on the outer wall of the first protective plate 200. Two adjustable fixing mechanisms 500 are symmetrically arranged on the fixing seat 410. The inner end of the adjustable fixing mechanism 500 is connected to the fixing seat 410, and the outer end of the adjustable fixing mechanism 500 is used to connect to the fixing end of the bed side.
[0036] The hip joint fixation structure includes a third protective plate 100 and a third adjustable strap. The third protective plate 100 has a U-shaped cross-section, and the third adjustable strap is mounted on the third protective plate 100. A first rubber pad 110 is located at the bottom of the inner wall of the third protective plate 100, and a second rubber pad 120 is located on the side of the inner wall of the third protective plate 100. The third adjustable strap is used to tighten the waist. The hip joint fixation structure, through its multi-dimensional design that restricts joint movement, enhances stability, and improves comfort, effectively solves the shortcomings of traditional restraint straps in restricting hip joint movement. The U-shaped third protective plate 100 provides multi-directional mechanical restraint, preventing hip flexion / rotation. The third protective plate 100, with its U-shaped cross-section design, wraps around the front, outer, and back sides of the hip joint (see...). Figure 2 This forms a semi-rigid enveloping structure. The first rubber pad 110 is located at the bottom of the inner wall of the U-shaped structure, conforming to the greater trochanter region of the femur to prevent the device from sliding when the patient turns over. The second rubber pad 120 covers the bony prominences on the lateral side of the hip joint (such as the iliac crest), dispersing local pressure through elastic deformation to prevent pressure sores. The hip joint fixation structure is connected to the leg fixation structure via a rigid connecting plate 140, forming a continuous braking system from the hip to the ankle.
[0037] The telescopic connection structure 600 includes a telescopic rod, a guide sleeve, two fastening screws, a first fixing block 610, and a second fixing block 620. The second fixing block 620 is disposed on the outer wall of the second protective plate 300, and the first fixing block 610 is disposed on the outer wall of the first protective plate 200. The telescopic rod is slidably engaged with the guide sleeve. The telescopic rod is connected and fixed to the guide sleeve by the two fastening screws. The first fixing block 610 is connected to the end of the telescopic rod, and the second fixing block 620 is connected to the end of the guide sleeve.
[0038] The adjustable fixing mechanism 500 includes a threaded rod 530, an adjusting sleeve 510, a threaded sleeve 520, and a connecting device 540. One end of the adjusting sleeve 510 is fixedly connected to the fixing base 410, and the other end of the adjusting sleeve 510 is slidably engaged with the threaded rod 530. The threaded sleeve 520 is rotatably disposed at the end of the adjusting sleeve 510, and the threaded sleeve 520 is threadedly engaged with the threaded rod 530. The connecting device 540 is disposed at the end of the threaded rod 530 away from the adjusting sleeve 510. The connecting device 540 is a suction cup.
[0039] How this example works
[0040] Step 1: Place the third protective plate 100 with the U-shaped cross section on the outside of the patient's hip joint, ensuring that the U-shaped opening faces upwards, and wrap around the front, outside, and back of the hip joint. Use the third adjustable strap (Velcro or ratchet buckle) to cross the end of the U-shaped opening to form a ring fixation. The strap should be tight enough to accommodate one finger.
[0041] A first rubber pad 110 (5mm thick) is attached to the bottom of the inner wall of the third protective plate 100, conforming to the greater trochanter area of the femur. A second rubber pad 120 (3mm thick) is attached to the side, covering bony prominences such as the iliac crest to prevent pressure sores.
[0042] Step 2: Place the first protective plate 200 in the middle of the thigh, and place the two second protective plates 300 symmetrically at the front and rear ends of the thigh. Insert multiple sliding rods into the reserved grooves of the protective plates and slide to adjust the spacing to fit the leg length.
[0043] Install the telescopic connection structure 600, insert the telescopic rod into the guide sleeve, adjust it to the required length, and lock it with the fastening screws. The first fixing block 610 and the second fixing block 620 are respectively welded to the outer walls of the first protective plate 200 and the second protective plate 300 to ensure that the telescopic rod is fixed to both ends of the sleeve.
[0044] Three first strip-shaped airbags 210 (4cm wide) are longitudinally attached to the inner side of the first protective plate 200, and two second strip-shaped airbags 320 are attached to the inner side of the second protective plate 300. Connect the airbag inflator, preset the airbag pressure to 15-25 mmHg, decreasing gradually (higher pressure proximally, lower pressure distally). Install the first adjustable strap 220 (upper and lower thigh sections) and the second adjustable strap 310 (mid-thigh section), securing them to the buckles on the outer side of the protective plate.
[0045] Step 3: Rigidly connect the third protective plate 100 of the hip joint fixation structure to the connecting plate 140 of the leg fixation structure with bolts to ensure that the hip-leg axis is aligned.
[0046] Rotate the threaded sleeve 520 to drive the threaded rod 530 to extend and retract, adjusting the length to the bed rail position. Press the suction cup to adhere to the bed surface, and use the vacuum pump to evacuate air until the suction force is ≥200N.
[0047] Step 4: With the patient lying supine, place the lower limbs within the curved plate of the device, ensuring there is no gap between the hip joint U-shaped protective plate and the leg protective plate. Adjust the distance between the side protective plates using the sliding lever to ensure there is no pressure or wobbling in the legs. Fine-tune the 600mm length of the telescopic connecting structure to compensate for slight leg movements (allowing ±2cm elastic displacement). Inflate the cuff to the target pressure and use a pressure gauge to check the pressure around the puncture site (maintaining 20-30mmHg). Check the dorsalis pedis artery pulsation and skin color to confirm there are no signs of ischemia.
[0048] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A lower extremity immobilization device for use after a vascular intervention, characterized in that: Including hip joint fixation structures and leg fixation structures; One end of the hip joint fixation structure is connected to the leg fixation structure via a connecting plate (140); The leg fixing structure includes a first protective plate (200), a fixing base (410), two second protective plates (300), two sliding rod structures, two telescopic connection structures (600), and two adjustable fixing mechanisms (500). The two second protective plates (300) are symmetrically arranged on the front and rear sides of the first protective plate (200). Each second protective plate (300) is connected to the end of the first protective plate (200) through one of the sliding rod structures. The two telescopic connections are symmetrically arranged. One end of the telescopic connection structure (600) is connected to the first protective plate (200), and the other end of the telescopic connection structure (600) is connected to the second protective plate (300). Both the first protective plate (200) and the second protective plate (300) are curved plates that can fit with the human leg. The first protective plate (200) is provided with a plurality of first adjustable straps (220), and the second protective plate (300) is provided with a plurality of second adjustable straps (310); The fixing seat (410) is disposed on the outer wall of the first protective plate (200), and two adjustable fixing mechanisms (500) are symmetrically disposed on the fixing seat (410). The inner end of the adjustable fixing mechanism (500) is connected to the fixing seat (410), and the outer end of the adjustable fixing mechanism (500) is used to connect to the fixing end of the bed side.
2. The immobilization device for the lower limb after vascular intervention according to claim 1, characterized in that: The hip joint fixation structure includes a third protective plate (100) and a third adjustable strap. The third protective plate (100) has a U-shaped cross-section, and the third adjustable strap is disposed on the third protective plate (100).
3. The lower limb immobilization and fixation device according to claim 2, characterized in that: The bottom of the inner wall of the third protective plate (100) is provided with a first rubber pad (110), and the side of the inner wall of the third protective plate (100) is provided with a second rubber pad (120).
4. A lower limb immobilization and fixation device according to any one of claims 1-3, characterized in that: The telescopic connection structure (600) includes a telescopic rod, a guide sleeve, two fastening screws, a first fixing block (610), and a second fixing block (620). The second fixing block (620) is disposed on the outer wall of the second protective plate (300), and the first fixing block (610) is disposed on the outer wall of the first protective plate (200). The telescopic rod is slidably engaged with the guide sleeve. The telescopic rod is connected and fixed to the guide sleeve by two fastening screws. The first fixing block (610) is connected to the end of the telescopic rod, and the second fixing block (620) is connected to the end of the guide sleeve.
5. A lower limb immobilization and fixation device according to claim 4, characterized in that: The adjustable fixing mechanism (500) includes a threaded rod (530), an adjusting sleeve (510), a threaded sleeve (520), and a connecting device (540). One end of the adjusting sleeve (510) is fixedly connected to the fixing seat (410), and the other end of the adjusting sleeve (510) is slidably engaged with the threaded rod (530). The threaded sleeve (520) is rotatably disposed at the end of the adjusting sleeve (510), and the threaded sleeve (520) is threadedly engaged with the threaded rod (530). The connecting device (540) is disposed at the end of the threaded rod (530) away from the adjusting sleeve (510).
6. A lower limb immobilization and fixation device according to claim 5, characterized in that: The connecting device (540) is a snap fastener or a suction cup.
7. A lower limb immobilization and fixation device according to claim 4, characterized in that: The slide bar structure includes multiple slide bars, which are evenly distributed between the first protective plate (200) and the second protective plate (300). Both the first protective plate (200) and the second protective plate (300) are slidably engaged with the slide bars.
8. A lower limb immobilization and fixation device according to claim 4, characterized in that: Multiple first strip-shaped airbags (210) are arranged inside the first protective plate (200), and multiple second strip-shaped airbags (320) are arranged inside the second protective plate (300).