Combined individual sacroiliac joint screw navigation template and manufacturing method

Abstract

The invention belongs to the technical field of medical instruments and apparatuses, and particularly relates to a combined individual sacroiliac joint screw navigation template and a manufacturing method. The template is characterized in that the navigation template is provided with a sleeve base, a positioning needle sleeve and a base, the positioning needle sleeve is provided with an outer sleeve and an inner sleeve, a guiding hole is formed in the sleeve base, the sleeve base is hollow, and the sleeve base is arranged in the guiding hole and is fixedly connected with the base into a whole;the outer sleeve is connected with the sleeve base, and the base completely fits the posterior superior iliac spine and adjacent partial iliac bone outer plates in shape; a screw through hole is formed inside the outer sleeve for penetrating through the inner sleeve or the hollow screw therein; a kirschner wire through hole is formed inside the inner sleeve for penetrating through a positioning kirschner wire, the bone restoration effect is good, and skin incision and hemorrhage during operation can be obviously reduced compared with a traditional integrated guiding plate.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a combined individualized sacroiliac screw navigation template and a manufacturing method. Background technique [0002] The pelvis is an important link connecting the spine and the main weight-bearing movement structure. The force generated by sitting, walking and other sports is transmitted to the spine along its bony structure. The pelvic ring is also the only way through which important blood vessels, nerves, and the reproductive and digestive systems pass. Therefore, severe damage to the pelvic ring not only leads to high mortality and disability rates, but also causes malunion, chronic pain and other complications due to improper treatment. The probability is also high. Early reduction and fixation can improve prognosis. [0003] For posterior pelvic ring fractures, internal fixation with sacroiliac joint screws has been accepted by more and more docto...

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Problems solved by technology

[0003] For posterior pelvic ring fractures, internal fixation with sacroiliac joint screws has been accepted by more and more doctors due to its advantages of less surgical trauma, less intraoperative blood loss, low risk of infection, and reliable internal fixation. However, there are many problems in the process of insertion. For example, the passage of sacroiliac screw is adjacent to important structures such as sacral nerve and pelvic viscera. , Nerve injury; the screw insertion area is narrow, the screw is placed incorrectly, and the internal fixation fails; traditional X-ray fluoroscopy cannot track the guide pin in real time, and the position of the sacral foramen cannot be clearly displayed. Therefore, the risk of nerve and blood vessel injury during the screw insertion process is greater , and continuous fluoroscopy is required during the operation, so that patients and medical staff receive a large amount of X-ray radiation

Computer navigation equipment can improve the accuracy of nail placement and reduce fluoroscopy, but it is expensive and difficult to popularize in primary hospitals

[0004] At present, there is an integrated guide plate, which can reduce the operation time and blood loss, improve the safety and accuracy of nail placement, and the incision is reduced compared with traditional surgery, but the base of the integrated guide plate and the guide hole are integrated as a whole. If the guide plate is placed in the center, a large incision is still required to expose, and the trauma is relatively large

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