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CN-224220211-U - Bone screw for pelvis

CN224220211UCN 224220211 UCN224220211 UCN 224220211UCN-224220211-U

Abstract

The utility model discloses a bone screw for pelvis, in particular to the technical field of bone screws, which comprises a first screw, wherein a first inserting groove is formed in the first screw, a second screw is connected in the first inserting groove in a threaded manner, the first screw comprises a first substrate layer, a first anti-corrosion layer is arranged outside the first substrate layer, the second screw comprises a second substrate layer, a second anti-corrosion layer is arranged outside the second substrate layer, and the first anti-corrosion layer and the second anti-corrosion layer are anti-corrosion layers formed by coating bioactive substances on the surfaces of the first substrate layer and the second substrate layer. According to the utility model, the first screw and the second screw have anti-corrosion capability through the second anti-corrosion layer and the first anti-corrosion layer, so that adverse reactions of the first screw and the second screw and surrounding tissues are reduced, the service lives of the first screw and the second screw are prolonged, and a plurality of first screws can be fixed together through the fixing mechanism, so that the practicability of the utility model is improved.

Inventors

  • XU JIANPING
  • GU CHUN
  • XUE BING

Assignees

  • 江苏金鹿集团医疗器械有限公司

Dates

Publication Date
20260512
Application Date
20250205

Claims (6)

  1. 1. The bone screw for pelvis comprises a first screw (1) and is characterized in that a first inserting groove (3) is formed in the first screw (1), and a second screw (2) is connected with the first inserting groove (3) in a threaded manner; the first screw (1) comprises a first base material layer (101), and a first anti-corrosion layer (102) is arranged outside the first base material layer (101); the second screw (2) comprises a second base material layer (201), and a second anti-corrosion layer (202) is arranged outside the second base material layer (201); The first corrosion prevention layer (102) and the second corrosion prevention layer (202) are both formed by coating bioactive substances on the surfaces of the first substrate layer (101) and the second substrate layer (201).
  2. 2. The bone screw for pelvis according to claim 1, wherein the first base material layer (101) and the second base material layer (201) are made of titanium alloy materials.
  3. 3. A bone screw for pelvis according to claim 1, characterized in that the first screw (1) is externally fixed with a hexagonal nut (4).
  4. 4. The bone screw for pelvis according to claim 1, wherein the first screw (1) is provided with steel wires (5) on both sides.
  5. 5. The bone screw for pelvis according to claim 4, wherein the fixing mechanism (6) for fixing the steel wire (5) is provided at both sides of the first screw (1); The fixing mechanism (6) comprises first threaded holes (601) formed in two ends of the steel wire (5), second inserting grooves (603) are formed in two sides of the top of the first screw (1), second threaded holes (602) are formed in two sides of the first threaded holes (601), and the first threaded holes (601) and the second threaded holes (602) which are communicated are connected with one bolt (604) in a threaded mode.
  6. 6. A pelvic bone screw according to claim 5, characterized in that the wire (5) is adapted to the second socket (603).

Description

Bone screw for pelvis Technical Field The utility model relates to the technical field of bone screws, in particular to a bone screw for pelvis. Background Orthopedics is one of the most common departments of various hospitals, mainly researches the anatomy, physiology and pathology of a skeletal muscle system, maintains and develops the normal form and function of the system by using medicaments, operations and physical methods, and has obvious changes along with the change of times and society, for example, diseases such as bone joint tuberculosis, osteomyelitis, poliomyelitis and the like are obviously reduced, and the traumas caused by traffic accidents are obviously increased. For example, chinese patent application with publication number CN208511155U provides a bone screw for pelvis, including interior screw, outer screw barrel nail, interior screw cap, outer screw barrel nail tip, interior screw fixed slot and dog, outer screw barrel nail has outer screw barrel nail tip, have interior screw fixed slot and interior hexagonal plum blossom counter bore in the outer screw barrel nail tip, interior hexagonal plum blossom counter bore is located interior screw fixed slot periphery, cup joint interior screw in the outer screw barrel nail, the one end of interior screw is equipped with interior screw cap, interior screw cap is located interior screw fixed slot, set up the dog in the outer screw barrel nail, interior screw runs through the dog, outer screw barrel nail periphery is equipped with polished rod section and screw rod section, polished rod section is located between outer screw barrel nail tip and the screw rod section. This technical scheme is through setting up the pelvis that forms by interior screw, outer screw section of thick bamboo nail, dog, outer screw section of thick bamboo nail tip and interior screw head combination with the bone screw, thereby can be when using, screw in again after the trompil, thereby increase the fixed dynamics of bone screw, avoid appearing unable deep tightening and cause the phenomenon that bone screw is relaxed, through setting up hexagon plum blossom counter bore, thereby prevent the discomfort that causes because of patient's activity, be favorable to alleviateing the pain after the bone fracture, through setting up connecting wire and perforation at outer screw section of thick bamboo nail tip, thereby can be in operation in-process quick with connecting wire and bone screw connection, clinical use is more convenient, the operation time has been shortened, alleviate the misery of patient in the operation. Therefore, the practicability is very high, and the method is suitable for wide popularization. However, the problem still exists in this solution that the screw is inside the patient's body for a long time, which is prone to corrosion, possibly adversely affecting the patient's body. Disclosure of utility model The utility model aims to provide a bone screw for pelvis, which can enable a first screw and a second screw to have corrosion resistance through a second corrosion-resistant layer and a first corrosion-resistant layer, reduce adverse reactions of the first screw and the second screw and surrounding tissues, prolong the service lives of the first screw and the second screw, and fix a plurality of first screws together through a fixing mechanism, so that the practicability of the bone screw is improved, and the defects in the technology are overcome. In order to achieve the above purpose, the bone screw for pelvis comprises a first screw, a first inserting groove is formed in the first screw, a second screw is connected with the first screw in a threaded mode, the first screw comprises a first base material layer, a first anti-corrosion layer is arranged outside the first base material layer, the second screw comprises a second base material layer, and a second anti-corrosion layer is arranged outside the second base material layer. Preferably, the first substrate layer and the second substrate layer are made of titanium alloy materials, and the titanium alloy materials are used for improving the strength of the first screw and the second screw. Preferably, the first anti-corrosion layer and the second anti-corrosion layer are anti-corrosion layers formed by coating bioactive substances on the surfaces of the first substrate layer and the second substrate layer, and are used for enabling the first screw and the second screw to have anti-corrosion property and avoiding affecting the body of a patient. Preferably, the first screw is externally fixed with a hexagonal nut for driving the first screw to rotate. Preferably, steel wires are arranged on two sides of the first screw, and are used for connecting a plurality of first screws together. Preferably, the fixed establishment that first screw both sides were equipped with fixed establishment to the steel wire, fixed establishment is including seting up the first screw hole at steel wire both ends, th