WO2011116517A1

WO2011116517A1 - System for maxillary sinus elevation operation

Info

Publication number: WO2011116517A1
Application number: PCT/CN2010/071242
Authority: WO
Inventors: 耿建平
Original assignee: 常州华森生物科技有限公司
Priority date: 2010-03-23
Filing date: 2010-03-23
Publication date: 2011-09-29

Abstract

A system for maxillary sinus elevation operation of implant surgery in oral cavity has a stop-in-microstep function. An annular step (14) is located at the top of an elevation shaft (1) and a stop ring (2) is mounted on the annular step. Internal locking threads are provided in the inner surface of the stop ring and the degree of tightness is adjusted by thread tolerance. In each stop interval of the annular step, precise adjustment and control can be realized by the degree of tightness of the threads. Generally, the precision is controlled in the range of 45-60 degrees, namely the height adjusting range less than 0.2mm.

Description

Maxillary sinus lift surgery system

[Technical Field]

The present invention relates to the field of implantology in stomatology, and in particular to the design of a surgical instrument for oral implant surgery.

【Background technique】

The maxillary sinus lift surgery system is developed with the development of oral implant technology and is the most important surgical instrument in the field of maxillary sinus implant surgery. Switzerland Noble Biocare has designed a straight maxillary sinus lift surgery system. Dentsply of the United States subsequently improved the design of the elbow maxillary sinus lift surgery system to better adapt to the position of the posterior maxillary sinus. As a company specializing in the production of maxillary sinus lift surgery systems, Keler has designed a system with a stop to prevent maxillary sinus penetrating from accidents. This system greatly improves the safety of maxillary sinus surgery, but it does not completely avoid the occurrence of maxillary sinus membrane breakage, and it is impossible to accurately orient patients with small opening. Therefore, there is still a need to improve the safety performance and indications of surgical systems.

[Summary of the Invention]

It is an object of the present invention to provide a maxillary sinus lift surgery system having a microstep stop function, which has a microstep stop function to ensure the safety of maxillary sinus surgery. The technical scheme employed by the present invention is as follows.

A maxillary sinus lifting operation system, comprising a lifting rod with a curved portion of the body, wherein a spacing ring step is arranged below the head of the lifting rod, and an elastic holding stop ring is arranged on the annular step .

Wherein, the interval of the spacing is 2 mm, and the elastic holding stop ring has an internal thread structure, and the elastic phase-to-phase structure is adjusted by the tolerance between the threads.

Wherein, the head of the lifting rod is in the shape of an arc-shaped bullet.

Wherein, the bending span of the body of the lifting rod is not less than 17 mm. Wherein, the bottom of the lifting rod is provided with a plastic base, and the base and the lifting rod are mechanically combined with an inverted concave shape.

Wherein, the lifting rod has a diameter ranging from 2.0 mm to 5.5 mm.

Wherein, when the diameter of the lifting rod is 2.0 to 3.5 mm, the lifting range of the head is 0-9 mm. Wherein, when the lifting rod has a diameter of 3.5 to 5.5 mm, the lifting range of the head is 9-15 mm. The invention provides a maxillary sinus lifting surgery system, which comprises a lifting rod with a large span curved portion in the body, a spaced annular step platform under the head of the lifting rod, and an elastic hug on the annular step platform. Stop the ring. This system can make the maxillary sinus lift surgery safer and can easily reach the position of the maxillary second molar. It can also be used for patients with small opening. This system expands the range of clinical indications for implant application.

[Description of the Drawings]

1 is a schematic view of a maxillary sinus lift surgery system in accordance with an embodiment of the present invention;

2 is a schematic view of a head portion of a maxillary sinus lift surgery system in accordance with an embodiment of the present invention; and FIG. 3 is a cross-sectional view of a head portion of a maxillary sinus lift surgery system in accordance with an embodiment of the present invention. Main symbol meaning:

Lifting rod 2, stop ring

11, head 12, body

13, bottom 14, ring steps

15, plastic base

【detailed description】

The invention will now be further described with reference to the drawings in conjunction with the embodiments.

Example

Referring to FIG. 1 , a maxillary sinus lifting surgery system in the embodiment of the present invention is composed of a lifting rod 1 and a stopping ring 2 . The lifting rod 1 is composed of a head portion 11, a body portion 12 and a bottom portion 13. The head portion 11 has a circular arc-shaped bullet shape, and the lower side of the head portion 11 is provided with a ring-shaped step 14 of 2 mm intervals. 14 has a stop ring 2 on the top. The connecting portion of the head 11 and the body 12 is a curved portion which is bent The span of the curve is not less than 17 mm. The bottom portion 13 is provided with a plastic base 15 which is mechanically combined with the bottom portion 13 by an inverted concave type.

Referring to Figures 2 and 3, the stop ring 2 consists of an internal clamp screw that is attached to the outside of the lifter head 11 and can be adjusted by the tolerance between the threads, each 2 mm as a stop interval. Precise adjustment can be made in each stop gap, which is controlled by the tightness of the screw. When the screw is rotated, the precision is generally controlled within the range of 45-60 degrees, that is, the adjustment height range of 0.2mm or less can be achieved.

The surgical procedure of the maxillary sinus lifting device is: 1) cutting the gums and determining the planting point; 2) planting the ball drill to remove the cortical bone, 2mm reaming drill deep into the bone, reaching 3~4mm from the bottom of the maxillary sinus; 3) The maxillary sinus lift surgery system can be used to gently ream the hole, from 2.0mm diameter to 4.0mm, but does not penetrate the maxillary sinus floor wall; 4) Microstep maxillary sinus lift surgical instrument system using microstep stop, The system can perform step-by-step stop in the minimum 0.2mm range, gently fine-tune the top sinus membrane, so as to keep the sinus membrane intact and not to be worn out; 5) Fill the corresponding amount of bone powder according to the lifting height, and then expand the diameter to 4.0. ~5.5mm, continue to increase the height to the length of the surgically designed dental implant.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. These improvements and retouchings should also be considered. It is the scope of protection of the present invention.

Claims

1. A maxillary sinus lift surgery system having a unique microstep stop function, including a lift rod with a curved portion of the body, characterized in that a spaced loop step is provided below the head of the lift rod, An elastic clasp stop ring is provided on the annular step.

2. The maxillary sinus lift surgery system according to claim 1, wherein the annular step has an annular spacing of 2 mm.

3. The maxillary sinus lift surgery system according to claim 1, wherein the elastic clasp stop ring has an internal thread structure, and the elastic phase-to-phase structure is adjusted between tolerances of the threads.

4. The maxillary sinus lift surgery system according to claim 1, wherein the head of the lift rod is in the shape of a circular bullet.

The maxillary intrasacral sinus lifting surgery system according to claim 1, wherein the body of the lifting rod has a bending span of not less than 17 mm.

The maxillary intrasacral sinus lift surgery system according to claim 1, wherein the bottom of the lift rod is provided with a plastic base, and the base and the lift rod are mechanically combined with an inverted concave shape.

7. The maxillary sinus lift surgery system according to claim 1, wherein the lift rod has a diameter ranging from 2.0 mm to 5.5 mm.

8. The maxillary sinus lift surgery system according to claim 7, wherein the lift rod has a diameter of 2.0 to 3.5 mm and the head has a lifting range of 0 to 9 mm.

9. The maxillary sinus lift surgery system according to claim 7, wherein the lift rod has a diameter of 3.5 to 5.5 mm and the head has a lifting range of 9 to 15 mm.