Instrument for bone grafting under small arthroscope

Abstract

The invention discloses an instrument for bone grafting under a small arthroscope, and provides the instrument for bone grafting under the small arthroscope, which can be used for standardizing bone grafting steps, quantitatively calculating bone grafting amount and pressurizing bone grafting quality in advance, so that complications are not liable to occur in a bone grafting process, consumed time is short, and efficiency is high. The instrument comprises an insertion accessory (1) and a bone grafting accessory (2),wherein the insertion accessory (1) is used for being inserted into a bone defect position of a joint gap, a channel allowing the bone grafting accessory (2) to be inserted is formed, and the bone grafting accessory (2) is used for pressurizing bone substances and then feedingthe bone substances into the bone defect position through the channel formed in the insertion accessory (1); and the bone grafting accessory (2) is provided with an adjusting unit (23) for adjusting the quantity of the bone substances carried by the bone grafting accessory (2). The instrument is suitable for bone grafting under the small arthroscope.

Description

【Technical field】 [0001] The invention relates to the technical field of medical equipment, in particular to an instrument for bone grafting under small arthroscopy. 【Background technique】 [0002] Bone grafting is the surgical transplantation of bone tissue into a patient's body where there is a bone defect that needs strengthening or fusion. With the continuous development of endoscopic technology, arthroscopic surgery has become a routine diagnosis and treatment method in joint surgery. Arthroscopy can directly observe the internal structure of the joint, and judge the location, type, severity, and presence of associated injuries of the meniscus. Improve the accuracy of clinical diagnosis, and provide a reference for choosing the appropriate surgical method. [0003] For small joint bone diseases such as scaphoid nonunion and lunate cyst, arthroscopic minimally invasive treatment is currently used, and one of the key steps is bone filling under arthroscopy. However, at ...

AI Technical Summary

Problems solved by technology

However, at present, the bone grafting equipment used in the existing arthroscopic bone grafting operation is relatively simple, and the arthroscopic overtube and trocar or Kirschner wire are generally used for bone grafting. The process is: first put the arthroscopic overtube and supporting Insert the trocar into the joint, pull out the trocar, align it with the bone graft under the microscope, put the cancellous bone particles into the arthroscopic overtube through the curved forceps, and push it into the joint with a Kirschner wire slightly thinner than the trocar bone graft

This bone grafting process has the following disadvantages: 1. Only a little bone can be placed each time. If too much bone is easily stuck in the trocar, it is not easy to push out, so the efficiency is low, and the force is not easy to control when pushing out, which is prone to Bone falling into other spaces in the joint

2. Bone grafting cannot be performed with one hand under the supervision of arthroscopy

3. If the bone is stuck in the trocar, it needs to be pulled out and cleaned again, and then the bone grafting step is performed from the beginning, resulting in a long time-consuming

4. Bone grafting is scattered, and the number of bone grafts is unknown after bone grafting, so it is impossible to effectively evaluate the number of bone grafts

Images