Knee fixing equipment for pelvic fracture patient

Abstract

The invention relates to the technical field of medical instruments, and discloses double knee fixing equipment for a pelvic fracture patient, which comprises a supporting shell, a first elastic piece is arranged in the supporting shell, a supporting frame is fixedly connected to the outer part of the supporting shell, a locking rod is arranged at one end of the supporting shell, and a second elastic piece is arranged at the other end of the supporting shell. The locking rod is arranged outside the first elastic piece, a self-adaptive mechanism is arranged inside the locking rod, the outer portion of the self-adaptive mechanism is arranged inside the supporting shell, the self-adaptive mechanism comprises a locking structure and an auxiliary assembly, and the outer portion of the locking structure is arranged inside the supporting shell and the locking rod. The first pressing block is pressed to drive the second elastic piece to be compressed, so that the effect that the device adapts to the body shape of a patient is achieved, the device can change according to the size of the lower limb posture of the patient, uniform and controllable constraint force is continuously provided, and fixing failure caused by constraint relaxation and displacement is fundamentally avoided.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a bilateral knee fixation device for patients with pelvic fractures. Background Technology

[0002] Knee immobilization devices are a key temporary measure in pre-hospital emergency care for pelvic fractures. By using wide restraints to fix the patient's knees together, the internal rotation of the lower limbs is used to keep the pelvis in a relatively closed state, thereby indirectly reducing the pelvic volume and restricting the movement of the fracture ends, so as to slow down life-threatening bleeding and relieve severe pain.

[0003] The existing knee fixation devices for pelvic fracture patients mostly use elastic wrapping to fix the patient's legs, relying on the contraction force of elastic materials such as elastic cloth and rubber to achieve restraint. The elastic materials are prone to displacement and wrinkling, leading to fixation failure due to loosening and displacement of restraint. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a bilateral knee fixation device for patients with pelvic fractures, which solves the problem that existing bilateral knee fixation devices for pelvic fractures are prone to displacement and wrinkling of elastic materials, leading to fixation failure due to loosening and displacement of restraint.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bilateral knee fixation device for patients with pelvic fractures, comprising a supporting shell, a first elastic element disposed inside the supporting shell, a support frame fixedly connected to the outside of the supporting shell, a locking rod disposed at one end of the supporting shell, the interior of the locking rod disposed outside the first elastic element, an adaptive mechanism disposed inside the locking rod, the exterior of the adaptive mechanism disposed inside the supporting shell, the adaptive mechanism comprising a locking structure and an auxiliary component, the exterior of the locking structure disposed inside the supporting shell and the locking rod, and the exterior of the auxiliary component disposed inside the supporting shell.

[0006] The above solution uses a rigid material as the core load-bearing and installation carrier of the overall structure. It has reserved assembly space for the first elastic element, locking rod and self-adaptive mechanism inside. At the same time, the support frame is fixedly connected to the outside of the support shell and is arranged symmetrically, which allows the Velcro to be inserted into it and fix the support shell to the patient's leg.

[0007] Preferably, the locking structure includes a locking plate, the outside of which is slidably connected to the inside of the locking rod, a guide rod is slidably connected to the inside of the locking plate, a second elastic element is provided on the outside of the locking plate, one end of the second elastic element is provided inside the locking rod, and a first pressing block is fixedly connected to the outside of the locking plate.

[0008] Preferably, both ends of the guide rod are fixedly connected to the inside of the locking rod, one end of the locking plate is slidably connected to the inside of the support housing, the inside of the second elastic element is disposed outside the guide rod, and the outside of the first pressing block is slidably connected to the inside of the locking rod.

[0009] Preferably, the auxiliary component includes a third elastic element, one end of which is disposed inside the support housing, and the other end of which is provided with a locking block. The locking block is externally slidably connected to the inside of the support housing, and a fixing block is disposed inside the support housing. The fixing block is externally fixedly connected to the outside of the locking rod.

[0010] Preferably, the support housing has a sliding groove inside, a telescopic component is provided inside the support housing, and the telescopic component is located outside the sliding groove.

[0011] Preferably, the telescopic component includes a sliding plate, the outside of which is slidably connected to the inside of the supporting housing. A magnet is fixedly connected to the inside of the sliding plate and the supporting housing. A supporting elastic element is provided inside the sliding plate. A second pressing block is provided at one end of the supporting elastic element. The outside of the second pressing block is provided inside the sliding groove and is slidably connected to the inside of the sliding plate.

[0012] Preferably, the interior of the supporting shell is provided with a sealing component, and the bottom end of the sealing component is provided with a sliding block.

[0013] Preferably, the sealing assembly includes a sliding baffle, the outer side of which is slidably connected to the inside of the supporting housing, a soft pad is fixedly connected to the inside of the sliding baffle, a pull rod is fixedly connected to one end of the sliding baffle, and a threaded rod is threadedly connected to the inside of the sliding baffle.

[0014] Preferably, the outer surface of the soft pad is slidably connected to the inside of the support housing, the bottom end of the soft pad is disposed at the top end of the sliding block, and the outer surface of the threaded rod is threadedly connected to the inside of the support housing.

[0015] Preferably, the sliding block is externally fixedly connected to a connecting buckle, the connecting buckle is internally provided with a connecting rope, one end of the connecting rope is fixedly connected to a support base, and the support base is externally fixedly connected to the outside of the support frame.

[0016] Working principle: By placing the patient's buttocks in the support area of ​​the support seat and the legs inside the support shell, when the patient is not in close contact with the device, the locking mechanism will cause the locking rod to lose its locking force. Then, the locking rod can be removed from the support shell, and the support shell will slide through the first elastic element. When the notch of the fixing block slides to the outside of the locking block, the support shell can be locked. The patient and the device are then fixed together by Velcro through the support frame, which can prevent fixation failure caused by loosening or displacement from the root.

[0017] This invention provides a bilateral knee fixation device for patients with pelvic fractures. It has the following beneficial effects: 1. This invention compresses the second elastic element by pressing the first pressing block, thereby causing the locking rod to lose its locking force from the support shell. After removing the locking rod, the support shell slides into another support shell through the action of the first elastic element. Consequently, the fixing block slides into the support shell and squeezes the locking block and the third elastic element, thus achieving the effect of the device adapting to the patient's body shape. It can change according to the size of the patient's lower limbs and continuously provide uniform and controllable restraint force, thereby avoiding fixation failure caused by loosening or displacement of restraint from the root.

[0018] 2. In this invention, pressing the second pressing block compresses the supporting elastic element, while the sliding plate slides due to the repulsion between the magnets. When the second pressing block slides onto the sliding groove, the supporting elastic element causes the second pressing block to extend outward and locks the sliding plate. This allows the length of the supporting shell to be adjusted according to the patient's leg length. By precisely adjusting the overall length of the device to match the lower limb size of different patients, precise constraint can be achieved for each individual.

[0019] 3. This invention removes the threaded rod and then pushes the pull rod inward to cause the sliding baffle and soft pad to slide, thereby causing the sliding block to lose its locking force. Then the sliding block is removed, and another support shell can be spliced ​​inside the support shell, thus achieving a modular splicing effect. This makes it convenient for medical staff to perform physical examinations and imaging examinations without completely removing the fixation device, avoiding pelvic displacement during disassembly. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the supporting shell of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a partial structural diagram of the first elastic element of the present invention; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is a partial structural diagram of the sliding plate of the present invention; Figure 7 This is a partial structural diagram of the supporting elastic element of the present invention; Figure 8 This is a partial structural diagram of the second pressing block of the present invention; Figure 9 for Figure 8 Enlarged diagram of point C in the middle.

[0021] The components include: 1. Supporting shell; 2. First elastic element; 3. Support frame; 4. Locking rod; 5. Adaptive mechanism; 51. Locking structure; 511. Locking plate; 512. Guide rod; 513. Second elastic element; 514. First pressing block; 52. Auxiliary component; 521. Third elastic element; 522. Locking block; 523. Fixing block; 6. Telescopic component; 61. Sliding plate; 62. Magnet; 63. Supporting elastic element; 64. Second pressing block; 7. Connecting rope; 8. Support base; 9. Sealing component; 91. Sliding baffle; 92. Soft pad; 93. Pulling rod; 94. Threaded rod; 10. Sliding block; 11. Connecting buckle; 12. Sliding groove. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 -Appendix Figure 3 This invention provides a bilateral knee fixation device for patients with pelvic fractures, including a support shell 1, a first elastic element 2 disposed inside the support shell 1, a support frame 3 fixedly connected to the outside of the support shell 1, a locking rod 4 disposed at one end of the support shell 1, the inside of the locking rod 4 disposed outside the first elastic element 2, an adaptive mechanism 5 disposed inside the locking rod 4, and the outside of the adaptive mechanism 5 disposed inside the support shell 1. The adaptive mechanism 5 includes a locking structure 51 and an auxiliary component 52. The outside of the locking structure 51 is disposed inside the support shell 1 and the locking rod 4, and the outside of the auxiliary component 52 is disposed inside the support shell 1. Specifically, the support shell 1 is used to support the first elastic element 2 for compression, and the support shell 1 is used to support the support frame 3 for fixation. The support frame 3 allows the Velcro to lock the patient's leg inside the support shell 1, and the locking rod 4 is locked inside the support shell 1 through the adaptive mechanism 5. The adaptive mechanism 5 is further divided into a locking structure 51 and an auxiliary component 52. The locking structure 51 can remove the locking rod 4 from the support shell 1, and the auxiliary component 52 can lock the two support shells 1 after they have adapted. The surface of the support shell 1 is made of silicone material, which can improve the patient's comfort.

[0024] Please see the appendix Figure 3 -Appendix Figure 5 The locking structure 51 includes a locking plate 511, the outer side of which is slidably connected to the inside of the locking rod 4. A guide rod 512 is slidably connected to the inside of the locking plate 511. A second elastic member 513 is provided on the outside of the locking plate 511. One end of the second elastic member 513 is provided inside the locking rod 4. A first pressing block 514 is fixedly connected to the outside of the locking plate 511. Both ends of the guide rod 512 are fixedly connected to the inside of the locking rod 4. One end of the locking plate 511 is slidably connected to the inside of the support housing 1. The inside of the second elastic member 513 is provided outside the guide rod 512. The outside of the first pressing block 514 is slidably connected to the inside of the locking rod 4. The auxiliary component 52 includes a third elastic member 521, one end of which is provided inside the support housing 1. A locking block 522 is provided on the other end of the third elastic member 521. The outside of the locking block 522 is slidably connected to the inside of the support housing 1. A fixing block 523 is provided inside the support housing 1. The outside of the fixing block 523 is fixedly connected to the outside of the locking rod 4. Specifically, the locking rod 4 supports the guide rod 512 for fixation and also supports the locking plate 511 for sliding. The locking plate 511 then supports the first pressing block 514 for fixation, and the locking rod 4 supports the second elastic member 513 for compression. When the first pressing block 514 is pressed, the locking plate 511 moves from inside the supporting housing 1 to inside the locking rod 4, compressing the second elastic member 513. The second elastic member 513 provides support to the locking plate 511, preventing pressure from being applied to the locking plate. At time 511, the locking plate 511 slides out from inside the support housing 1, and the guide rod 512 can prevent the second elastic element 513 from deforming too much on the left and right sides during compression. At the same time, the locking rod 4 can be removed. When the locking rod 4 is removed, the first elastic element 2 will drive the fixing block 523 to slide into the support housing 1, and the fixing block 523 will squeeze the third elastic element 521 and the locking block 522. Under the action of the third elastic element 521, the locking block 522 slides into the fixing block 523, which can lock the two support housings 1.

[0025] Please see the appendix Figure 6 -Appendix Figure 8 The support housing 1 has a sliding groove 12 inside, and a telescopic component 6 is provided inside the support housing 1. The telescopic component 6 is located inside the sliding groove 12. The telescopic component 6 includes a sliding plate 61. The outside of the sliding plate 61 is slidably connected to the inside of the support housing 1. A magnet 62 is fixedly connected to the inside of the sliding plate 61 and the support housing 1. A support elastic member 63 is provided inside the sliding plate 61. A second pressing block 64 is provided at one end of the support elastic member 63. The outside of the second pressing block 64 is located inside the sliding groove 12 and is slidably connected to the inside of the sliding plate 61. Specifically, the sliding plate 61 and the supporting shell 1 are used to support and fix the magnet 62. The magnet 62 can drive the sliding plate 61 to slide outward. Without pressing the second pressing block 64, the sliding plate 61 will not slide. The sliding plate 61 is used to support the supporting elastic member 63 for compression and assist the second pressing block 64 to slide. The supporting elastic member 63 and the second pressing block 64 are fixedly connected. By pressing the second pressing block 64, the supporting elastic member 63 is compressed and the second pressing block 64 slides into the sliding plate 61, which can make the sliding plate 61 lose its locking force. When the sliding plate 61 and the second pressing block 64 slide into the sliding groove 12, the supporting elastic member 63 will drive the second pressing block 64 to slide outward and lock the sliding plate 61, preventing the sliding plate 61 from continuing to slide under the repulsion of the magnet 62.

[0026] Please see the appendix Figure 7 -Appendix Figure 9 The support housing 1 is provided with a sealing component 9 inside. The bottom end of the sealing component 9 is provided with a sliding block 10. The sealing component 9 includes a sliding baffle 91. The outside of the sliding baffle 91 is slidably connected to the inside of the support housing 1. The inside of the sliding baffle 91 is fixedly connected with a soft pad 92. One end of the sliding baffle 91 is fixedly connected with a pull rod 93. The inside of the sliding baffle 91 is threadedly connected with a threaded rod 94. The outside of the soft pad 92 is slidably connected to the inside of the support housing 1. The bottom end of the soft pad 92 is located at the top end of the sliding block 10. The outside of the threaded rod 94 is threadedly connected to the inside of the support housing 1. Specifically, the supporting housing 1 is used to support the sliding baffle 91 and the soft pad 92 to slide. The soft pad 92 can prevent the sliding block 10 from damaging the sliding baffle 91 and provides greater friction to the sliding block 10 to prevent it from shaking. At the same time, the supporting housing 1 and the sliding baffle 91 are locked together by a threaded rod 94. When the threaded rod 94 is removed and the pulling rod 93 is pushed to drive the sliding baffle 91 and the soft pad 92 to slide, the sliding block 10 can lose its locking force and be exposed, so that the sliding block 10 can be replaced. The connection between the supporting housing 1 and the sliding block 10 is through a slide rail groove, which can prevent the sliding block 10 from moving outward.

[0027] Please see the appendix Figure 1 -Appendix Figure 3 The sliding block 10 is externally fixedly connected to a connecting buckle 11, and a connecting rope 7 is provided inside the connecting buckle 11. One end of the connecting rope 7 is fixedly connected to a support base 8, and the support base 8 is externally fixedly connected to the outside of the support frame 3. Specifically, the sliding block 10 is used to support and fix the connecting buckle 11, and the connecting buckle 11 can tie the connecting rope 7 inside it, thereby fixing one end of the connecting rope 7 to the support base 8, so that the two can be connected. The surface of the support base 8 is made of silicone material, which can improve the patient's comfort.

[0028] Workflow: First, pressing the first pressing block 514 causes the locking plate 511 to slide inwards towards the locking rod 4. The guide rod 512 provides guidance for the locking plate 511. Then, the locking head of the locking plate 511 slides from inside the supporting housing 1 into the locking rod 4. The second elastic element 513 is compressed by the locking plate 511, causing the locking rod 4 to lose its locking force with the supporting housing 1, thus removing the locking rod 4. Simultaneously, the supporting housing 1, through the inherent properties of the first elastic element 2, causes the fixing block 523 to slide into another supporting housing 1, compressing the locking block 522 and the third... When the notch of the fixed block 523 slides to the outside of the locking block 522, the elastic element 521 will drive the locking block 522 into the interior of the fixed block 523 and lock the two support shells 1. When the gap is still too large, the support shell 1 will be pushed to drive the fixed block 523 to continue sliding, and the other locking block 522 and the third elastic element 521 will be squeezed again. In this way, the device can adapt to the patient's body shape and change according to the size of the patient's lower limbs, continuously providing uniform and controllable restraint force, and fundamentally avoiding fixation failure caused by loosening or displacement of restraint. Simultaneously, pressing the second pressing block 64 compresses the supporting elastic element 63, causing the second pressing block 64 to slide from the sliding groove 12 into the supporting shell 1. The magnet 62, through its own repulsive force, drives the sliding plate 61 to slide outward. When the sliding plate 61 and the second pressing block 64 slide to another sliding groove 12, the supporting elastic element 63, through its own characteristics, drives the second pressing block 64 to slide into another sliding groove 12, locking the sliding plate 61 and the second pressing block 64 in place. This allows the length of the supporting shell 1 to be adjusted according to the patient's leg length. By precisely adjusting the overall length of the device to match the lower limb size of different patients, precise constraint can be achieved for each individual. When another support shell 1 needs to be connected, first remove the threaded rod 94 to make the sliding baffle 91 lose its locking force with the support shell 1. Then push the pull rod 93 to make the sliding baffle 91 and the soft pad 92 slide into the support shell 1 and make the sliding block 10 fully exposed. Then remove the connecting rope 7 from the connecting buckle 11 to remove the sliding block 10 from the support shell 1. Then another support shell 1 can be installed inside the support shell 1 to increase the length of the device leg fixation. This can achieve the effect of modular splicing, which can facilitate medical staff to perform physical examinations and imaging examinations without completely removing the fixation device and avoid pelvic displacement during disassembly.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bilateral knee fixation device for patients with pelvic fractures, comprising a supporting shell (1), characterized in that, The support shell (1) is provided with a first elastic element (2) inside. The support shell (1) is fixedly connected to a support frame (3) outside. One end of the support shell (1) is provided with a locking rod (4). The inside of the locking rod (4) is provided outside the first elastic element (2). The inside of the locking rod (4) is provided with an adaptive mechanism (5). The outside of the adaptive mechanism (5) is provided inside the support shell (1). The adaptive mechanism (5) includes a locking structure (51) and an auxiliary component (52). The outside of the locking structure (51) is provided inside the support shell (1) and the locking rod (4). The outside of the auxiliary component (52) is provided inside the support shell (1).

2. The bilateral knee fixation device for patients with pelvic fractures according to claim 1, characterized in that, The locking structure (51) includes a locking plate (511), the outside of which is slidably connected to the inside of the locking rod (4), a guide rod (512) is slidably connected inside the locking plate (511), a second elastic element (513) is provided on the outside of the locking plate (511), one end of the second elastic element (513) is provided inside the locking rod (4), and a first pressing block (514) is fixedly connected to the outside of the locking plate (511).

3. The bilateral knee fixation device for patients with pelvic fractures according to claim 2, characterized in that, The two ends of the guide rod (512) are fixedly connected to the inside of the locking rod (4), one end of the locking plate (511) is slidably connected to the inside of the support shell (1), the inside of the second elastic member (513) is disposed outside the guide rod (512), and the outside of the first pressing block (514) is slidably connected to the inside of the locking rod (4).

4. The bilateral knee fixation device for patients with pelvic fractures according to claim 1, characterized in that, The auxiliary component (52) includes a third elastic element (521), one end of which is disposed inside the support housing (1), and the other end of which is provided with a locking block (522). The locking block (522) is externally slidably connected to the inside of the support housing (1). The inside of the support housing (1) is provided with a fixing block (523), and the outside of the fixing block (523) is fixedly connected to the outside of the locking rod (4).

5. A bilateral knee fixation device for patients with pelvic fractures according to claim 1, characterized in that, The support shell (1) has a sliding groove (12) inside, and a telescopic component (6) is provided inside the support shell (1). The telescopic component (6) is located outside the sliding groove (12).

6. A bilateral knee fixation device for patients with pelvic fractures according to claim 5, characterized in that, The telescopic component (6) includes a sliding plate (61), the outside of which is slidably connected to the inside of the supporting shell (1). A magnet (62) is fixedly connected to the inside of the sliding plate (61) and the supporting shell (1). A supporting elastic element (63) is provided inside the sliding plate (61). A second pressing block (64) is provided at one end of the supporting elastic element (63). The outside of the second pressing block (64) is provided inside the sliding groove (12). The outside of the second pressing block (64) is slidably connected to the inside of the sliding plate (61).

7. A bilateral knee fixation device for patients with pelvic fractures according to claim 1, characterized in that, The support housing (1) is provided with a sealing component (9) inside, and a sliding block (10) is provided at the bottom end of the sealing component (9).

8. A bilateral knee fixation device for patients with pelvic fractures according to claim 7, characterized in that, The sealing assembly (9) includes a sliding baffle (91), the outside of which is slidably connected to the inside of the supporting housing (1), a soft pad (92) is fixedly connected inside the sliding baffle (91), a pull rod (93) is fixedly connected to one end of the sliding baffle (91), and a threaded rod (94) is threadedly connected inside the sliding baffle (91).

9. A bilateral knee fixation device for patients with pelvic fractures according to claim 8, characterized in that, The outer side of the soft pad (92) is slidably connected to the inside of the support shell (1), the bottom end of the soft pad (92) is set at the top of the sliding block (10), and the outer side of the threaded rod (94) is threadedly connected to the inside of the support shell (1).

10. A bilateral knee fixation device for patients with pelvic fractures according to claim 7, characterized in that, The sliding block (10) is fixedly connected to a connecting buckle (11), and a connecting rope (7) is provided inside the connecting buckle (11). One end of the connecting rope (7) is fixedly connected to a support seat (8), and the support seat (8) is fixedly connected to the outside of the support frame (3).

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