Reset maintaining brace in child humerus supracondylar fracture operation

Abstract

The utility model provides a reduction maintaining brace in a child humerus supracondylar fracture operation, and belongs to the technical field of medical instruments. Comprising a damping positioning hinge, an upper arm connecting structure and a front arm connecting structure, the damping positioning hinge comprises a damping positioning rotating shaft, a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are connected to the two rotating ends of the damping positioning rotating shaft respectively. The upper arm connecting structure comprises an upper arm support and an upper arm fixing belt connected to the upper arm support, the upper arm support is fixedly installed on the first connecting arm, the front arm connecting structure comprises a front arm support and a front arm fixing belt connected to the front arm support, the front arm support is fixedly installed on the second connecting arm, and the front arm fixing belt is fixedly installed on the front arm support. And matched magic tapes are correspondingly arranged on the upper arm fixing band and the front arm fixing band. Adaptive positioning and supporting can be carried out according to the intraoperative requirements and the bending state of the elbow joint of a patient, it is guaranteed that the elbow joint of the patient is always in the extremely-bent position, and the stability of intraoperative and postoperative fracture reduction is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a brace for reducing and maintaining supracondylar fractures of the humerus during surgery for children. Background Art

[0002] Supracondylar fracture of the humerus is the most common elbow fracture in children, accounting for about 40% of elbow fractures. Delayed or improper treatment can easily lead to impaired joint function and deformed appearance, seriously affecting the quality of life.

[0003] In related technologies, the treatment plan for supracondylar humeral fractures in children requiring surgery is first closed reduction and pinning. After closed reduction, the patient's elbow joint is extremely flexed. During the operation, a bandage is usually used to wrap the shoulder and wrist joint, and the upper arm and forearm are tied and fixed to maintain the initial stability of the fracture. The degree of reduction is then determined by fluoroscopy, and subsequent pinning operations are performed.

[0004] When using bandage wrapping to immobilize the patient's upper limbs, if the bandage wrapping is not tight enough, the bandage at the joint can easily loosen during intraoperative body position changes, resulting in ineffective postoperative fracture reduction and stability, ultimately leading to unsatisfactory surgical results. Overly tight bandage wrapping can also easily damage a child's delicate skin and soft tissue, causing secondary injury. Utility Model Content

[0005] The present invention provides a brace for intraoperative reduction and maintenance of supracondylar fractures of the humerus in children. The brace can adaptively position and support the patient's elbow according to the intraoperative requirements and the patient's elbow flexion state, ensuring that the patient's elbow is always in an extreme flexion position, thereby improving the stability of fracture reduction during and after surgery. The technical solution is as follows:

[0006] The present invention provides a brace for reducing and maintaining supracondylar fracture of humerus in children during surgery, comprising a damping positioning hinge, an upper arm connection structure and a forearm connection structure.

[0007] The damping positioning hinge includes a damping positioning shaft, a first connecting arm and a second connecting arm, wherein the first connecting arm and the second connecting arm are respectively connected to two rotating ends of the damping positioning shaft;

[0008] The upper arm connection structure includes an upper arm arm support and an upper arm fixing strap connected to the upper arm arm support, and the upper arm arm support is fixedly installed on the first connecting arm. The forearm connection structure includes a forearm arm support and a forearm fixing strap connected to the forearm arm support, and the forearm arm support is fixedly installed on the second connecting arm. Matching Velcro is correspondingly provided on the upper arm fixing strap and the forearm fixing strap.

[0009] Optionally, the upper arm support and the forearm support are both U-shaped groove structures and the concave surfaces are arranged opposite to each other.

[0010] Optionally, anti-slip silicone pads are provided on the concave surfaces of the upper arm arm rest and the forearm arm rest.

[0011] Optionally, a plurality of anti-slip protrusions are protruding from the anti-slip silicone pad, and the plurality of anti-slip protrusions are evenly spaced.

[0012] Optionally, a slider is provided on both the upper arm arm support and the forearm arm support, a slide groove and a first bolt hole are provided on the slider, and a plurality of second bolt holes are evenly spaced along an extended square on the first connecting arm and the second connecting arm, the upper arm arm support slides with the first connecting arm through the slide groove on the slider, and is bolted together through the first bolt hole and the second bolt hole; the forearm arm support slides with the second connecting arm through the slide groove on the slider, and is bolted together through the first bolt hole and the second bolt hole.

[0013] Optionally, both the upper arm support and the forearm support are provided with buckles, the upper arm fixing belt is wrapped around the buckle on the upper arm support, and the forearm fixing belt is wrapped around the buckle on the forearm support.

[0014] Optionally, the slider is detachably connected to the upper arm support and the forearm support.

[0015] Optionally, both the first connecting arm and the second connecting arm are telescopic arms.

[0016] Optionally, the first connecting arm and the second connecting arm are stainless steel structural parts.

[0017] Optionally, the upper arm support and the forearm support are polyethylene structural members.

[0018] The beneficial effects of the technical solution provided by the embodiment of the utility model include at least:

[0019] The intraoperative reduction and maintenance brace for supracondylar fractures of the humerus in children provided by the present invention is first used by adjusting the patient's elbow joint to an extreme flexion state, so that the inner side of the forearm and the inner side of the upper arm are in close contact. The damping positioning hinge is then adjusted and pulled apart to a certain angle, causing the first and second connecting arms to rotate relative to each other with the damping shaft as the rotation center until the patient's elbow joint in an extreme flexion state can be accommodated. The patient's elbow joint is then placed between the first and second connecting arms. The first and second connecting arms are reset and clamped under the elastic force of the damping shaft, and the upper arm support and forearm support are used to fully contact the outer side of the patient's upper arm and forearm. Finally, the forearm fixing strap and upper arm fixing strap are wrapped around the upper arm support and forearm support from the outside and fastened with Velcro, or directly pulled out through the gap on both sides of the upper arm support and forearm support to fasten them sideways, thereby achieving a tight and secure binding of the upper arm support and forearm support, ensuring a secure positioning of the upper arm support and forearm support. It has a simple structure and is easy to adjust. It can provide adaptive positioning support according to intraoperative needs and the patient's elbow flexion state, ensuring that the patient's elbow is always in an extreme flexion position, thereby improving the stability of fracture reduction during and after surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural diagram of a brace for reducing and maintaining supracondylar fractures of the humerus in children provided by an embodiment of the present invention;

[0022] Figure 2 This is a structural schematic diagram of a brace for reducing and maintaining supracondylar fractures of the humerus in children provided by an embodiment of the present invention in a working state;

[0023] Figure 3 This is a schematic structural diagram of the anti-slip silicone pad provided by an embodiment of the present utility model;

[0024] Figure 4 This is a structural diagram of a slider provided by an embodiment of the present utility model;

[0025] Figure 5 This is a schematic structural diagram of another brace for intraoperative reduction and maintenance of supracondylar fractures of the humerus in children provided by an embodiment of the present invention.

[0026] In the figure: 1-damping positioning hinge; 2-upper arm connecting structure; 3-forearm connecting structure; 4-anti-slip silicone pad; 5-slider; 6-ring; 11-damping shaft; 12-first connecting arm; 13-second connecting arm; 14-second bolt hole; 21-upper arm support; 22-upper arm fixing strap; 31-forearm support; 32-forearm fixing strap; 41-anti-slip protrusion; 51-slide groove; 52-first bolt hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Figure 1 This is a structural diagram of a brace for reducing and maintaining supracondylar fractures of the humerus in children provided by an embodiment of the present invention; Figure 2 This is a structural schematic diagram of a brace for reducing and maintaining supracondylar fractures of the humerus in children provided by an embodiment of the present invention in a working state; Figure 3 This is a schematic structural diagram of the anti-slip silicone pad provided by an embodiment of the present utility model; Figure 4 This is a structural diagram of a slider provided by an embodiment of the present utility model; Figure 5 This is a schematic diagram of the structure of another brace for reducing and maintaining supracondylar fracture of humerus in children provided by the embodiment of the present invention. Figures 1 to 5 As shown, an embodiment of the present invention provides a brace for intraoperative reduction and maintenance of supracondylar fractures of the humerus in children, comprising a damping positioning hinge 1, an upper arm connection structure 2 and a forearm connection structure 3.

[0029] The damping positioning hinge 1 includes a damping shaft 11 , a first connecting arm 12 and a second connecting arm 13 . The first connecting arm 12 and the second connecting arm 13 are respectively connected to two rotating ends of the damping shaft 11 .

[0030] For example, in an embodiment of the present invention, the first connecting arm 12 and the second connecting arm 13 are metal components, such as stainless steel, to ensure mechanical strength and overall structural stability. The damping shaft 11 is a metal mechanical disc spring structure, enabling both rotation and frictional positioning. In the direction of elbow flexion, the resistance is set to zero, allowing the damping shaft 11 to rotate freely. In the direction of elbow extension, the frictional resistance is greater than the elbow extension torque, thereby ensuring secure fixation of the elbow in the extreme flexion position.

[0031] The upper arm connection structure 2 includes an upper arm support 21 and an upper arm fixing strap 22 connected to the upper arm arm support. The upper arm support 21 is fixedly mounted on the first connecting arm 12. The forearm connection structure 3 includes a forearm support 31 and a forearm fixing strap 32 connected to the forearm support 31. The forearm support 31 is fixedly mounted on the second connecting arm 13. The upper arm fixing strap 22 and the forearm fixing strap 32 are respectively provided with matching Velcro.

[0032] For example, in this embodiment of the present invention, both the upper arm support 21 and the forearm support 31 have U-shaped grooves with their concave surfaces facing each other, designed to conform to the lateral surfaces of the patient's upper arm and forearm when the elbow joint is in extreme flexion. Both the upper fixing strap 22 of the upper arm support 21 and the forearm fixing strap 32 of the forearm support 31 are equipped with adjustable double-sided hook-and-loop Velcro straps, which can be intertwined and fixed to each other for a tight connection.

[0033] When using the intraoperative reduction and maintenance brace for supracondylar fractures of the humerus in children provided by the embodiment of the present invention, the patient's elbow joint is first adjusted to an extremely flexed state so that the inner side of the forearm is in close contact with the inner side of the upper arm. The damping positioning hinge 1 is then adjusted so that the first connecting arm 12 and the second connecting arm 13 are initially closed or at a relatively small angle. By pulling them apart to a certain angle, the first connecting arm 12 and the second connecting arm 13 are rotated relative to each other with the damping shaft 11 as the rotation center until the patient's elbow joint in an extremely flexed state can be accommodated. The patient's elbow joint is then placed between the first connecting arm 12 and the second connecting arm 13. The first connecting arm 12 and the second connecting arm 13 are reset and clamped under the elastic force of the damping shaft 11, and the upper arm support 21 and the forearm support 31 are used to fully fit in contact with the outer side of the patient's upper arm and the outer side of the forearm. Finally, the forearm fixation strap 32 and the upper arm fixation strap 22 are wrapped around the upper arm support 21 and the forearm support 31 from the outside and fastened together using Velcro, or directly pulled out through the gap on both sides of the upper arm support 21 and the forearm support 31 to fasten them sideways, thereby securing the upper arm support 21 and the forearm support 31 and ensuring their secure positioning with the limb. The simple structure and easy adjustment allow for adaptive positioning support based on intraoperative needs and the patient's elbow flexion state, ensuring that the patient's elbow is always in an extreme flexion position and improving the stability of fracture reduction during and after surgery.

[0034] Optionally, a non-slip silicone pad 4 is provided on the concave surfaces of the upper arm support 21 and the forearm support 31. For example, in the embodiment of the present invention, by providing a layer of non-slip silicone pad 4 on the concave surfaces of the upper arm support 21 and the forearm support 31, the non-slip silicone pad 4 utilizes its softness to further increase the contact area with the patient's skin, thereby increasing the anti-slip coefficient while ensuring comfort. This prevents the patient's upper arm or forearm from moving relative to the upper arm support 21 and the forearm support 31 during surgery and daily changes in body position, preventing the patient's upper arm or forearm from sliding and loosening toward the distal end of the elbow joint, further improving the stability of fracture reduction during and after surgery.

[0035] Optionally, a plurality of anti-slip protrusions 41 are provided on the anti-slip silicone pad 4, and the plurality of anti-slip protrusions 41 are evenly spaced. For example, in the embodiment of the present invention, by evenly spaced along the extending direction of the patient's upper arm or forearm, the anti-slip coefficient when in contact with the patient's skin is further improved, thereby ensuring the clamping tightness of the upper arm support 21 and the forearm support 31 and preventing relative movement and loosening.

[0036] Optionally, a slider 5 is provided on both the upper arm support 21 and the forearm support 31, and a slide groove 51 and a first bolt hole 52 are provided on the slider 5. A plurality of second bolt holes 14 are evenly spaced along an extended square on the first connecting arm 12 and the second connecting arm 13. The upper arm support 21 slides with the first connecting arm 12 through the slide groove 51 on the slider 5, and is bolted to the first bolt hole 52 and the second bolt hole 14; the forearm support 31 slides with the second connecting arm 13 through the slide groove 51 on the slider 5, and is bolted to the first bolt hole 52 and the second bolt hole 14. For example, in an embodiment of the present invention, according to the different lengths of the patient's upper arm and forearm, the relative position of the upper arm support 21 on the first connecting arm 12, or the forearm support 31 on the second connecting arm 13 can be adjusted by sliding according to actual needs. After the adjustment is in place, the first bolt hole 52 on the slider 5 and the second bolt hole 14 preset on the first connecting arm 12 or the second connecting arm 13 are coaxial, and then bolts are inserted to fix them, thereby realizing multi-level adjustment of the overall length of both sides of the brace to meet the matching degree of the upper limbs of children of different ages, ensure their wearing comfort, and improve adaptability.

[0037] Optionally, the slider 5 is detachably connected to the upper arm support 21 and the forearm support 31. For example, in an embodiment of the utility model, the upper arm support 21 and the forearm support 31 are polyethylene structural parts. High-density polyethylene is used for high-temperature negative pressure one-time molding, which has low manufacturing cost and sufficient mechanical strength, and is not easy to deform when supporting the patient's arm. It can also facilitate X-ray penetration during surgery, making it convenient for operations such as fracture fluoroscopy during surgery. If accidental damage occurs during patient use, the upper arm support 21 and the forearm support 31 can also be replaced separately, and the damping positioning hinge 1 structure can continue to be used, avoiding overall scrapping during use by a single patient and increasing service life.

[0038] It should be noted that the intraoperative reduction and maintenance brace for supracondylar fractures of the humerus in children provided by the embodiment of the present invention is independently sterile packaged when leaving the factory. It is for one-time use on a single patient, complies with the intraoperative sterility principle, and can effectively reduce the risk of cross infection.

[0039] Optionally, the first connecting arm 12 and the second connecting arm 13 are both telescopic arms. For example, in the embodiment of the present invention, in achieving the relative position adjustment contact of the upper arm support 21 on the first connecting arm 12, or the forearm support 31 on the second connecting arm 13, by adopting the first connecting arm 12 and the second connecting arm 13 in the form of telescopic arms, the overall length of the first connecting arm 12 and the second connecting arm 13 can be further adjusted to ensure that both the upper arm support 21 and the forearm support 31 can fully contact the patient's upper arm and forearm, thereby improving wearing comfort and wearing stability.

[0040] It should be noted that the first connecting arm 12 and the second connecting arm 13 can adopt a self-locking telescopic rod structure commonly available on the market, and the present invention does not limit its specific form.

[0041] Optionally, the upper arm support 21 and the forearm support 31 are both provided with a buckle 6, the upper arm fixing belt 22 is wrapped around the buckle 6 on the upper arm support 21, and the forearm fixing belt 32 is wrapped around the buckle 6 on the forearm support 31. For example, in an embodiment of the present utility model, the upper arm support 21 and the forearm support 31 can be provided with a buckle 6 structure to provide a wrapping and mounting point for the upper arm fixing belt 22 and the forearm fixing belt 32. The user can install or remove the fixing belt on the corresponding buckle 6 according to actual needs, and choose a convenient way to wrap and fix the entire brace. For example, in some use cases, the upper arm support 21 and the forearm support 31 can only mount the corresponding fixing belt on one end, and the other end can be directly fastened through the fixing belt and the buckle 6 without using Velcro for fixing. It is flexible to use and improves overall practicality.

[0042] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the present invention belongs. The terms "first", "second" and similar words used in the specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "include" or "comprising" mean that the elements or objects appearing before "include" or "comprising" include the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. Terms such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left", and "right" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] The above description is only an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A brace for reducing and maintaining supracondylar fracture of humerus in children during surgery, characterized in that: include: Damping positioning hinge (1), upper arm connecting structure (2) and forearm connecting structure (3), The damping positioning hinge (1) comprises a damping rotating shaft (11), a first connecting arm (12) and a second connecting arm (13), wherein the first connecting arm (12) and the second connecting arm (13) are respectively connected to two rotating ends of the damping rotating shaft (11); The upper arm connection structure (2) comprises an upper arm support (21) and an upper arm fixing belt (22) connected to the upper arm arm support, wherein the upper arm support (21) is fixedly mounted on the first connecting arm (12); the forearm connection structure (3) comprises a forearm support (31) and a forearm fixing belt (32) connected to the forearm support (31), wherein the forearm support (31) is fixedly mounted on the second connecting arm (13); and matching Velcro strips are correspondingly provided on the upper arm fixing belt (22) and the forearm fixing belt (32).

2. The brace for reducing and maintaining supracondylar fracture of humerus in children during surgery according to claim 1, characterized in that: The upper arm support (21) and the forearm support (31) are both U-shaped groove structures, and the concave surfaces are arranged opposite to each other.

3. The brace for reducing and maintaining supracondylar fracture of humerus in children during surgery according to claim 2, characterized in that: Anti-slip silicone pads (4) are provided on the concave surfaces of the upper arm support (21) and the forearm support (31).

4. The brace for intraoperative reduction and maintenance of supracondylar fracture of humerus in children according to claim 3, characterized in that: A plurality of anti-slip protrusions (41) are protruding from the anti-slip silica pad (4), and the plurality of anti-slip protrusions (41) are evenly spaced.

5. The brace for intraoperative reduction and maintenance of supracondylar fracture of humerus in children according to any one of claims 1 to 4, characterized in that: The upper arm support (21) and the forearm support (31) are both provided with a slider (5), the slider (5) is provided with a slide groove (51) and a first bolt hole (52), and the first connecting arm (12) and the second connecting arm (13) are provided with a plurality of second bolt holes (14) evenly spaced along an extended square. The upper arm support (21) is slidably matched with the first connecting arm (12) through the slide groove (51) on the slider (5), and is bolted to the first bolt hole (52) and the second bolt hole (14); the forearm support (31) is slidably matched with the second connecting arm (13) through the slide groove (51) on the slider (5), and is bolted to the first bolt hole (52) and the second bolt hole (14).

6. The brace for reducing and maintaining supracondylar fracture of humerus in children during surgery according to claim 5, characterized in that: The upper arm support (21) and the forearm support (31) are both provided with a buckle (6), the upper arm fixing belt (22) is connected around the buckle (6) on the upper arm support (21), and the forearm fixing belt (32) is connected around the buckle (6) on the forearm support (31).

7. The brace for reducing and maintaining supracondylar fracture of humerus in children during surgery according to claim 5, characterized in that: The slider (5) is detachably connected to the upper arm support (21) and the forearm support (31).

8. The brace for intraoperative reduction and maintenance of supracondylar fractures of the humerus in children according to any one of claims 1 to 4, characterized in that: The first connecting arm (12) and the second connecting arm (13) are both telescopic arms.

9. The brace for intraoperative reduction and maintenance of supracondylar fractures of the humerus in children according to any one of claims 1 to 4, characterized in that: The first connecting arm (12) and the second connecting arm (13) are stainless steel structural parts.

10. The brace for intraoperative reduction and maintenance of supracondylar fracture of humerus in children according to any one of claims 1 to 4, characterized in that: The upper arm support (21) and the forearm support (31) are polyethylene structural parts.

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