CN221617219U - Anatomical humeral greater knot locking steel plate with low notch - Google Patents
Anatomical humeral greater knot locking steel plate with low notch Download PDFInfo
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- CN221617219U CN221617219U CN202323589766.1U CN202323589766U CN221617219U CN 221617219 U CN221617219 U CN 221617219U CN 202323589766 U CN202323589766 U CN 202323589766U CN 221617219 U CN221617219 U CN 221617219U
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Abstract
本实用新型公开了一种低切迹节解剖型肱骨大结锁定钢板，涉及医疗器械技术领域，包括钢板头部、钢板体部和钢板侧部，钢板头部为长条形弧面结构，所述长条形弧面结构的曲面弧度贴合肱骨大结节的生理弧度，钢板头部上设有双排锁定螺孔，钢板体部与钢板头部第二排中间的两个锁定螺孔相连，钢板体部沿肱骨纵轴放置，钢板体部整体成“梯型”结构，钢板侧部用于连接钢板头部两侧与钢板体部尾端，该钢板与肱骨大结节贴敷良好，无需术中塑形即可完整包裹肱骨大结节骨折块，头部双排多方向角度螺钉固定可使应力分布更为均匀，避免应力集中；钢板体部“梯型”固定结构可有效将骨折部位的张力有效地转化为压应力进而可保持其骨折端的稳定性。
The utility model discloses a low-profile anatomical humeral tubercle locking steel plate, which relates to the technical field of medical devices and comprises a steel plate head, a steel plate body and a steel plate side. The steel plate head is a long strip arc surface structure, the curved surface curvature of the long strip arc surface structure fits the physiological curvature of the greater tubercle of the humerus, a double row of locking screw holes is arranged on the steel plate head, the steel plate body is connected to the two locking screw holes in the middle of the second row of the steel plate head, the steel plate body is placed along the longitudinal axis of the humerus, the steel plate body forms a "ladder-shaped" structure as a whole, the steel plate side is used to connect the two sides of the steel plate head with the tail end of the steel plate body, the steel plate is well attached to the greater tubercle of the humerus, and the greater tubercle of the humerus fracture block can be completely wrapped without intraoperative shaping, the double row of multi-directional angle screws on the head can make the stress distribution more uniform and avoid stress concentration; the "ladder-shaped" fixing structure of the steel plate body can effectively convert the tension of the fracture site into compressive stress and thus maintain the stability of its fracture end.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a low-notch anatomical humerus greater knot locking steel plate.
Background
The greater tuberosity fracture of the humerus is a common fracture type of shoulder injury, and the internal fixation method is various: the conventional steel plate is easy to cause shoulder impact due to large wound, so that shoulder joint dysfunction, chronic pain and the like are generated; the hollow screw is used alone to fix the fracture block, but the proximal humerus is loose bone, the holding force of the hollow screw is insufficient, the screw is easy to lift up and the fixation is failed, and the fracture block can not be fixed due to the small size of the comminuted fracture or fracture block; the anchor internal fixation is one of the operation formulas commonly used in orthopaedics and sports medicine departments at present, but the operation formulas also have certain defects, such as suture fracture, anchor channel damage, cutting effect and internal fixation loosening failure of the anchor or suture to the rotator cuff and the like possibly occur after operation, and particularly when the double-row anchor suture bridge internal fixation is adopted for treating the osteoporosis humerus tuberosity fracture, the probability of the defects is higher.
Along with clinical needs and refinement of orthopaedics profession and improvement of a design concept of a built-in object, when the humeral tuberosity avulsion bone block is fixed, how to distribute stress in a larger area and how to provide good biomechanical stability, meanwhile, the thickness is required to be thin, the notch is low, and the bone fracture fixation device is applied to the clinical blood circulation which is beneficial to protecting the rotator cuff and periosteum and is a technical problem which needs to be solved urgently in trauma orthopaedics.
Disclosure of Invention
The utility model aims to solve the problems and the defects in the background art and provides a low-notch anatomical type humerus greater knot locking steel plate which is used for fixing the fracture of the greater tuberosity of the humerus and has the characteristics of small wound, accurate reduction, firm fixation and the like.
The low-notch anatomical humeral greater knot locking steel plate comprises a steel plate head, a steel plate body and a steel plate side part, wherein the steel plate head is of a strip-shaped cambered surface structure, the cambered surface radian of the strip-shaped cambered surface structure is attached to the physiological radian of the greater humeral knot, and double rows of locking screw holes are formed in the steel plate head;
the steel plate body is connected with two locking screw holes in the middle of the second row of the steel plate head, the steel plate body is placed along the longitudinal axis of the humerus, the steel plate body is integrally in a ladder-shaped structure, and 5 locking screw holes are distributed on the steel plate body;
The side part of the steel plate is used for connecting the head part of the steel plate both sides and the tail end of the steel plate body.
Preferably, the number of the first row of locking screw holes on the steel plate head is 6, and the number of the second row of locking screw holes on the steel plate head is 4.
Preferably, the two sides of the lower end of the head of the steel plate are respectively provided with a wire groove with a semi-arc structure.
Preferably, the structure of the steel plate head part connected with the steel plate body part is in an inclined T-shaped structure.
Preferably, the steel plate head, the steel plate body and the steel plate side are integrally formed to form a parachute structure.
The utility model has the beneficial effects that:
The utility model is used for fixing the greater tuberosity fracture of the humerus and has the advantages of small wound, accurate reduction, firm fixation and the like;
The steel plate is well attached to the greater tuberosity of the humerus, the fracture block of the greater tuberosity of the humerus can be completely wrapped without molding in operation, and the double-row multi-directional angle screws at the head can lead the stress distribution to be more uniform and avoid stress concentration;
The ladder-shaped fixing structure of the steel plate body adopts the tension band internal fixing principle, so that the tension of the fracture part can be effectively converted into compressive stress, and the stability of the fracture end can be further maintained;
The overall flat and thin parachute-shaped design has the advantages that the periphery of the steel plate is round, and the interference of the low-notch structure to the subacromion gap is small.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model in use.
Detailed Description
Referring to fig. 1, a low-notch anatomical humerus greater knot locking steel plate comprises a steel plate head 1, a steel plate body 2 and a steel plate side 3, wherein the steel plate head 1 is of a strip-shaped cambered surface structure, the cambered surface radian of the strip-shaped cambered surface structure is attached to the physiological radian of a greater humerus tuberosity, double rows of locking screw holes are arranged on the steel plate head 1, the number of the first row of locking screw holes on the steel plate head 1 is 6, the locking screw holes are used for placing 2.0mm locking screws, the number of the second row of locking screw holes on the steel plate head 1 is 4, and used for placing 2.0mm locking screws;
The steel plate body 2 is connected with two locking screw holes in the middle of the second row of the steel plate head 1, so that the structure of the steel plate head 1 connected with the steel plate body 2 is in an inclined T-shaped structure; the steel plate body 2 is placed along the longitudinal axis of the humerus, the steel plate body 2 is integrally in a ladder-shaped structure, 5 locking screw holes are distributed on the steel plate body 2, and the locking screw holes are used for placing 2.0mm locking screws;
the steel plate side parts 3 are used for connecting two sides of the steel plate head part 1 with the tail end of the steel plate body part 2;
the steel plate head 1, the steel plate body 2 and the steel plate side 3 are integrally formed to be similar to a parachute structure.
The working principle of the utility model is as follows:
The utility model provides a low-notch anatomical humerus greater knot locking steel plate which is well attached to a humerus greater knot, and can completely wrap a fracture block of the humerus greater knot without molding in operation, and the fixation of head double-row multi-directional angle screws can lead the stress distribution to be more uniform and avoid stress concentration; the ladder-shaped fixing structure of the steel plate body 2 adopts the tension band internal fixing principle, so that the tension of the fracture part can be effectively converted into compressive stress, and the stability of the fracture end can be further maintained; the overall flat and thin parachute-shaped design has the advantages that the periphery of the steel plate is round, and the interference of the low-notch structure to the subacromion gap is small. The steel plate has good tensile resistance and anchoring force in osteoporosis and crushed fracture.
The working process of the utility model comprises the following steps:
The patient is anesthetized by combining general anesthesia with brachial plexus blocking, after the anesthesia is completed, a beach chair is adopted, the affected shoulder is padded up, the incision on the front and the outer sides of the affected shoulder peak is taken, the longitudinal incision with the length of about 5cm is made on the front and the outer sides of the deltoid muscle at the shoulder peak end, and the longitudinal split is carried out along the movement of deltoid muscle fibers, so that the large nodule is exposed. The method comprises the steps of resetting a large tuberosity bone block under direct vision, respectively suturing rotator sleeves around the large tuberosity by using three Ethbond No. 2 suture lines, enabling a wire tail to pass through a wire groove of a steel plate head 1, then gradually pulling the suture lines, placing the steel plate at a position about 3mm below the vertex of the large tuberosity, pressing the steel plate head 1 against the large tuberosity bone block of the humerus, placing a steel plate body 2 along the longitudinal axis of the humerus, temporarily fixing by drilling 2-3 1.5mm Kirschner needles through a locking screw hole after good adhesion, enabling a C-arm perspective confirmation broken end to reset well in operation, enabling the position of the steel plate to be satisfactory, sequentially placing a far-near locking screw into the locking screw hole on the basis of applying pressure by the steel plate, enabling the C-arm perspective confirmation broken end to reset well in operation again, enabling the position of the steel plate to be satisfactory, enabling the movable shoulder joint to have no blocking abnormal sound, tightening and knotting of the wire tail of the suture lines, and reinforcing the rotator sleeves.
Claims (5)
1. A low notch anatomical humeral greater knot locking steel plate, characterized in that: the novel high-strength steel plate comprises a steel plate head (1), a steel plate body (2) and a steel plate side (3), wherein the steel plate head (1) is of a strip-shaped cambered surface structure, the cambered surface radian of the strip-shaped cambered surface structure is attached to the physiological radian of a greater tuberosity of a humerus, and double rows of locking screw holes are formed in the steel plate head (1);
The steel plate body (2) is connected with two locking screw holes in the middle of the second row of the steel plate head (1), the steel plate body (2) is placed along the longitudinal axis of the humerus, the steel plate body (2) is integrally in a ladder-shaped structure, and 5 locking screw holes are distributed on the steel plate body (2);
The steel plate side part (3) is used for head of connecting steel plate two sides of the steel plate body (2) and the tail end of the steel plate body (1).
2. A low-notch anatomic humeral greater knot locking plate as claimed in claim 1, which is characterized in that: the number of the first row of locking screw holes on the steel plate head (1) is 6, and the number of the second row of locking screw holes on the steel plate head (1) is 4.
3. A low-notch anatomic humeral greater knot locking plate as claimed in claim 2, which is characterized in that: the two sides of the lower end of the steel plate head (1) are provided with wire grooves with semi-arc structures.
4. A low-notch anatomic humeral greater knot locking plate as claimed in claim 2, which is characterized in that: the structure of the steel plate head part (1) connected with the steel plate body part (2) is in an inclined T-shaped structure.
5. The low-notch anatomic humeral greater knot locking plate of claim 4, further comprising: the steel plate head (1), the steel plate body (2) and the steel plate side (3) are integrally formed to form a parachute structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323589766.1U CN221617219U (en) | 2023-12-27 | 2023-12-27 | Anatomical humeral greater knot locking steel plate with low notch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323589766.1U CN221617219U (en) | 2023-12-27 | 2023-12-27 | Anatomical humeral greater knot locking steel plate with low notch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221617219U true CN221617219U (en) | 2024-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323589766.1U Active CN221617219U (en) | 2023-12-27 | 2023-12-27 | Anatomical humeral greater knot locking steel plate with low notch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221617219U (en) |
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2023
- 2023-12-27 CN CN202323589766.1U patent/CN221617219U/en active Active
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