Fixing frame for popliteal vein thrombolysis

Abstract

The utility model belongs to the field of medical instruments, and discloses a popliteal vein thrombolysis fixing frame which comprises two symmetrically-arranged first positioning arc plates and two symmetrically-arranged second positioning arc plates, the two ends of the two first positioning arc plates are detachably connected through flexible first adjusting buckles, and the two ends of the two second positioning arc plates are detachably connected through flexible second adjusting buckles. The two ends of the two second positioning arc plates are detachably connected through flexible second adjusting buckles, the corresponding first positioning arc plates and the corresponding second positioning arc plates are detachably connected through length-adjustable connecting buckles, and the connecting buckles are made of hard materials. In the using process, the body feeling is more comfortable, the wrapping feeling is high, the fixing effect is better on the premise of being adaptive to users of different body types, meanwhile, medical staff can conveniently observe the condition of a patient at any time, and the lower limb deep vein thrombosis fixing device is suitable for fixing the legs of the patient in the process of treating lower limb deep vein thrombosis through catheter thrombolysis.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically a popliteal vein thrombolysis fixation frame. Background Technology

[0002] With the maturation of endovascular interventional techniques, catheter-directed thrombolysis for lower extremity deep vein thrombosis has become one of the least invasive and most reliable methods for treating acute and subacute deep vein thrombosis. It has been fully recognized by the vascular surgery community both domestically and internationally. Popliteal vein puncture is the first technical element in implementing this treatment plan. Currently, the method for direct popliteal vein puncture is as follows: the patient lies prone with the knee in a standard anteroposterior position. The puncture point is the lowest popliteal crease. The needle is inserted at a 45º-60º angle, parallel to the longitudinal axis of the femur, and under fluoroscopy, punctures towards the lateral intercondylar eminence of the tibia. After successfully entering the popliteal vein, a sheath is inserted.

[0003] A common problem with this method in clinical practice is that it relies heavily on bony landmarks, thus requiring a high degree of precision in patient positioning. Secondly, the prone position, local anesthesia, puncture pain, and prolonged discomfort make it difficult to maintain a standard position for extended periods. Even slight changes in position increase the difficulty of the puncture and the risk of damaging the popliteal artery. These factors directly determine the success of the surgery, the incidence of complications, and the patient's prognosis.

[0004] Both Chinese utility model patents with authorization announcement numbers CN215229580U and CN209172457U disclose a thrombolytic immobilization support for popliteal vein puncture. The two are similar in principle, both fixing an arc-shaped plate structure above and below the user's knee to prevent the user's legs from bending and restrict changes in body position.

[0005] However, because the curved plate structure is made of rigid material and has a semi-circular cross-section, it has low compatibility with the legs. When using it, it is fixed to the legs with straps. If the straps are too loose, the fixation effect will be poor, and if the straps are too tight, it will cause discomfort to the patient during use. Utility Model Content

[0006] To address the aforementioned shortcomings in the existing technology, this utility model aims to provide a popliteal vein thrombolysis fixation frame, which achieves greater comfort while ensuring effective fixation.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a popliteal vein thrombolysis fixation frame, comprising two symmetrically arranged first positioning arc plates and two symmetrically arranged second positioning arc plates. Both the first and second positioning arc plates are arranged with outwardly convex arcs, and the central angles corresponding to the arcs formed by the first and second positioning arc plates are both less than 180°. The two ends of the two first positioning arc plates are detachably connected by flexible first adjusting buckles, so that the first positioning arc plates and the first adjusting buckles form a closed-loop structure for tightly wrapping the leg; the two ends of the two second positioning arc plates are detachably connected by flexible second adjusting buckles, so that the second positioning arc plates and the second adjusting buckles form a closed-loop structure for tightly wrapping the leg.

[0008] The corresponding first positioning arc plate and the corresponding second positioning arc plate are detachably connected by a length-adjustable connecting buckle made of rigid material.

[0009] As a limitation of this utility model: the connecting buckle includes a locking part and an insertion part. The locking part is fixed on one of the first positioning arc plate and the second positioning arc plate. The locking part includes a locking seat and a locking buckle that can be rotatably fastened to the locking seat. The insertion part is fixed on the other of the first positioning arc plate and the second positioning arc plate. The insertion part includes a long connecting strip and an insert fixed on one end of the connecting strip facing the locking part. The insert is detachably inserted between the locking seat and the locking buckle. When the locking buckle is engaged, the relative position of the insert is fixed.

[0010] As a limitation of this utility model: the insert has a plurality of insertion holes spaced apart along its length direction, and the locking seat is fixed with a limiting protrusion adapted to the size of the insertion holes. When the locking buckle is engaged, the insertion holes are fitted onto the limiting protrusion.

[0011] As a limitation of this utility model: the connecting strip has a widening portion that gradually widens in the middle.

[0012] As a limitation of this utility model: the first adjusting buckle includes a first side of Velcro fixed to one of the first positioning arc plates, and a pair of second sides of Velcro with strip structure respectively fixed to both ends of the other first positioning arc plate.

[0013] As a limitation of this utility model: the second adjusting buckle includes a first side of Velcro fixed to one of the second positioning arc plates, and a pair of second sides of Velcro with strip-shaped structures respectively fixed to both ends of the other second positioning arc plate.

[0014] As a limitation of this utility model: the outer contours of the first positioning arc plate and the second positioning arc plate are elliptical or rectangular with chamfers.

[0015] As a limitation of this utility model: both the first positioning arc plate and the second positioning arc plate are provided with flexible wrapping strips for wrapping the legs relatively independently, and both the first positioning arc plate and the second positioning arc plate are fixed with anti-slip layers to increase the friction between the corresponding positioning arc plate and the flexible wrapping strip.

[0016] As a limitation of this utility model, the anti-slip layer is made of rubber.

[0017] By adopting the above technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows:

[0018] This invention uses a pair of arc-shaped plates fixed to the user's legs. Since the central angle of the arc formed by the plates is less than 180°, and the plates are detachably connected via flexible adjustable buckles, when the fixation frame is installed on the user, the combination of the arc-shaped plates and the flexible connecting parts wraps around the user's legs. This not only avoids the rigid material end of the original fixation device from directly applying force to the patient's legs, making the user feel more comfortable, but also provides a strong sense of wrapping and is more suitable for users of different body types, with excellent positioning effect. Furthermore, the two pairs of positioning arc plates are connected by adjustable-length connecting buckles, which not only prevents relative movement between the two pairs of positioning arc plates, thereby preventing the user's knee from bending, but also leaves sufficient uncovered space between the two pairs of arc plates for observing the puncture point, facilitating medical staff to observe the patient's condition at any time. In addition, the length of the connecting buckles is adjustable, making it suitable for patients of different body types and highly adaptable.

[0019] In summary, this utility model provides a more comfortable and supportive experience during use, is suitable for users of different body types, offers better fixation, and facilitates medical staff in monitoring the patient's condition at any time. It is applicable for fixing the patient's legs during catheter-directed thrombolysis treatment of deep vein thrombosis in the lower extremities. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0022] Figure 2 This is a perspective view of the locking part in the open state according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the locking part in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the insertion part in an embodiment of the present invention.

[0025] In the diagram: 1-First positioning arc plate, 2-Second positioning arc plate, 3-First side of Velcro, 4-Second side of Velcro, 5-Flexible covering tape, 6-Locking part, 61-Locking seat, 62-Locking buckle, 63-Protruding structure, 64-Recessed structure, 65-Arc-shaped groove, 66-Limiting protrusion, 7-Insertion part, 71-Connecting strip, 72-Insertion strip, 73-Insertion hole, 74-Wideened part. Detailed Implementation

[0026] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. It should be understood that the popliteal vein thrombolysis fixation frame described herein is a preferred embodiment and is only used for illustration and explanation of this utility model, and does not constitute a limitation thereof.

[0027] The directional terms or positional relationships such as "up," "down," "left," and "right" used in this utility model are based on the accompanying drawings of this utility model specification. Figure 1 The orientation relationships in the description are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component must have a specific orientation, or that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content protected by this utility model. Example

[0028] This implementation example Figures 1-4 As shown, a popliteal vein thrombolysis fixation frame includes two symmetrically arranged first positioning arc plates 1 and two symmetrically arranged second positioning arc plates 2. The two ends of the two first positioning arc plates 1 are detachably connected by flexible first adjustment buckles, and the two ends of the two second positioning arc plates 2 are detachably connected by flexible second adjustment buckles. The corresponding first positioning arc plate 1 and the corresponding second positioning arc plate 2 are detachably connected by length-adjustable connecting buckles.

[0029] Specifically, both the first positioning arc plate 1 and the second positioning arc plate 2 are made of rigid material. Both are designed with an outwardly convex arc, meaning their cross-sections are both outwardly convex arcs, and the central angle corresponding to this arc is less than 180°. In this embodiment, the central angle corresponding to the arc formed by the first positioning arc plate 1 and the second positioning arc plate 2 is 120°. The outer contours of the first positioning arc plate 1 and the second positioning arc plate 2 are chamfered rectangles, or ellipses, which are smoother and improve safety during use. Furthermore, this partially enclosed arc structure of the arc plate not only better conforms to the user's leg lines but also adapts to users of different body types within a wider range.

[0030] Both ends of the two first positioning arc plates 1 are detachably connected by flexible first adjusting buckles, forming a closed-loop structure for wrapping the legs. Specifically, the first adjusting buckle includes a Velcro first surface 3 fixed to one of the first positioning arc plates 1. In this embodiment, the Velcro first surface 3 is the hook surface of the Velcro, and the Velcro loop surface covers the corresponding first positioning arc plate 1 as much as possible, thereby improving the adaptability of this embodiment. The first adjusting buckle also includes a pair of Velcro second surfaces 4 with strip structures fixed to both ends of the other first positioning arc plate 1. In this embodiment, the Velcro second surface 4 is the loop surface of the Velcro, which fits the skin better. The Velcro loop surface is a pair of wider strip structures, which provides stronger coverage. Alternatively, two or more narrower strip Velcro can be arranged side by side at one end of each first positioning arc plate 1. Similarly, both ends of the two second positioning arc plates 2 are detachably connected by flexible second adjusting buckles, forming a closed-loop structure for wrapping the legs. The second adjusting buckle includes a hook and loop fastener fixed to one of the second positioning arc plates 2, and a pair of hook and loop fasteners with strip-shaped structures fixed to both ends of the other second positioning arc plate 2, which will not be described in detail here. Of course, the hook and loop fasteners can also be used interchangeably.

[0031] To further improve the coverage, the first positioning arc plate 1 and the second positioning arc plate 2 are each provided with a relatively independent flexible covering strip 5 for wrapping the legs. In this embodiment, the flexible covering strip 5 is a fabric covering strip that can be wrapped around the user's legs, and the ends are fastened with Velcro. Correspondingly, the inner sides of the first positioning arc plate 1 and the second positioning arc plate 2 are each provided with an anti-slip layer (not shown in the figure) to increase the friction between the corresponding positioning arc plate and the flexible covering strip 5. The anti-slip layer is made of rubber.

[0032] The corresponding first positioning arc plate 1 and the corresponding second positioning arc plate 2 are detachably connected by a length-adjustable connecting buckle. Here, "corresponding" means that one of the first positioning arc plates 1 is detachably connected to one of the second positioning arc plates 2 below the first positioning arc plate 1 by a connecting buckle, and the other first positioning arc plate 1 is detachably connected to the other second positioning arc plate 2 below the first positioning arc plate 1 by a connecting buckle. Figure 2-4As shown, the connecting buckle is made of a rigid material to prevent bending at the knee. Specifically, the connecting buckle includes a locking part 6 and an insertion part 7. In this embodiment, the locking part 6 is fixed to the lower end of the first positioning arc plate 1. The locking part 6 includes a locking seat 61 with a planar structure and a locking buckle 62 that can be rotatably fastened to the locking seat 61. The locking seat 61 has a concave cross-section. The locking buckle 62 is rotatably disposed in the concave part, and protruding structures 63 are fixed on both sides of the locking buckle 62. Concave structures 64 that are adapted to the protruding structures 63 are provided on the inner walls of both sides of the locking part 6. When the locking buckle 62 is fastened, the protruding structures 63 are placed into the concave structures 64. Furthermore, the end of the locking buckle 62 is also provided with an arc-shaped groove 65 that makes it easy to open. The insertion part 7 is arranged along the height direction, and its lower end is fixed to the upper end of the second positioning arc plate 2. The insertion part 7 includes a long connecting strip 71 integrally formed with an insert strip 72 at one end of the connecting strip 71 facing the locking part 6. The insert strip 72 has a plurality of insertion holes 73 spaced apart along its length direction. The bottom surface of the recessed structure 64 of the locking seat 61 is fixed with limiting protrusions 66 that are adapted to the size of the insertion holes 73 and are fewer in number than the number of insertion holes 73. 2. A detachable insertion locking seat 61 and locking buckle 62 are connected. When the locking buckle 62 is open, the gap between the locking buckle 62 and the locking seat 61 increases, allowing the insertion strip 72 to move within the gap. The insertion hole 73 is fixedly fitted onto the limiting protrusion 66. When the locking buckle 62 is engaged, it presses the insertion strip 72, fixing its relative position. When different insertion holes 73 are fitted onto the limiting protrusion 66, the connecting buckle has different lengths. Of course, in other embodiments, the locking part 6 can also be fixed to the upper end of the second positioning arc plate 2, and the corresponding insertion part 7 can be fixed to the lower end of the first positioning arc plate 1. To enhance the stability of the structure, the connecting strip 71 has a gradually widening widening part 74 in the middle to further prevent bending at the knee.

[0033] In this embodiment, two flexible wrapping straps 5 are wrapped around the user's thigh above the knee and calf below the knee, respectively. The first positioning arc plate 1 and the second positioning arc plate 2 with the first Velcro side 3 are connected by the locking part 6, and the length of the locking part 6 is adjusted according to the user's height. The first positioning arc plate 1 and the second positioning arc plate 2 with the second Velcro side 4 are connected by the locking part 6, and the length of the locking part 6 is adjusted according to the user's height. First, the first positioning arc plate 1 and the second positioning arc plate 2 with the first Velcro side 3 are attached to the user's thigh and calf, respectively. Then, the first positioning arc plate 1 and the second positioning arc plate 2 with the second Velcro side 4 are attached to the user's thigh and calf, respectively. The second Velcro side 4 is attached to the corresponding first Velcro side 3 from both sides, so that the first positioning arc plate 1 and the first adjusting buckle form a closed loop structure for tightly wrapping the thigh, and the second positioning arc plate 2 and the second adjusting buckle form a closed loop structure for tightly wrapping the calf. The installation of this embodiment is completed. At this time, the popliteal fossa is exposed, which is convenient for medical staff to operate and observe.

Claims

1. A popliteal vein thrombolysis fixation frame, characterized in that: It includes two symmetrically arranged first positioning arc plates and two symmetrically arranged second positioning arc plates. Both the first and second positioning arc plates are arranged with an outward convex arc, and the central angles corresponding to the arcs formed by the first and second positioning arc plates are both less than 180°. The two ends of the two first positioning arc plates are detachably connected by a flexible first adjusting buckle, so that the first positioning arc plates and the first adjusting buckle form a closed-loop structure for tightly wrapping the legs. Both ends of the two second positioning arc plates are detachably connected by flexible second adjustment buckles, so that the second positioning arc plates and the second adjustment buckles form a closed-loop structure for tightly wrapping the legs; The corresponding first positioning arc plate and the corresponding second positioning arc plate are detachably connected by a length-adjustable connecting buckle made of rigid material.

2. The popliteal vein thrombolysis fixation frame according to claim 1, characterized in that: The connecting buckle includes a locking part and an insertion part. The locking part is fixed on one of the first positioning arc plate and the second positioning arc plate. The locking part includes a locking seat and a locking buckle that can be rotatably fastened to the locking seat. The insertion part is fixed on the other of the first positioning arc plate and the second positioning arc plate. The insertion part includes a long connecting strip and an insert fixed on one end of the connecting strip facing the locking part. The insert is detachably inserted between the locking seat and the locking buckle. When the locking buckle is engaged, the relative position of the insert is fixed.

3. The popliteal vein thrombolysis fixation frame according to claim 2, characterized in that: The insert has several holes spaced apart along its length. The locking seat has a limiting protrusion that matches the size of the holes. When the locking buckle is engaged, the holes are fitted onto the limiting protrusion.

4. The popliteal vein thrombolysis fixation frame according to claim 3, characterized in that: The connecting strip has a widening section that gradually widens in the middle.

5. The popliteal vein thrombolysis fixation frame according to any one of claims 1-4, characterized in that: The first adjusting buckle includes a first side of Velcro fixed to one of the first positioning arc plates, and a pair of second sides of Velcro with strip-shaped structures fixed to both ends of the other first positioning arc plate.

6. The popliteal vein thrombolysis fixation frame according to claim 5, characterized in that: The second adjusting buckle includes a first side of Velcro fixed to one of the second positioning arc plates, and a pair of second sides of Velcro with strip-shaped structures fixed to both ends of the other second positioning arc plate.

7. The popliteal vein thrombolysis fixation frame according to claim 6, characterized in that: The outer contours of the first and second positioning arc plates are elliptical or rectangular with chamfers.

8. The popliteal vein thrombolysis fixation frame according to any one of claims 1-4, 6, and 7, characterized in that: Both the first and second positioning arc plates have relatively independent flexible wrapping strips for wrapping the legs. The inner sides of both the first and second positioning arc plates are fixed with anti-slip layers to increase the friction between the corresponding positioning arc plates and the flexible wrapping strips.

9. The popliteal vein thrombolysis fixation frame according to claim 8, characterized in that: The anti-slip layer is made of rubber.

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