Deburring process for interbody fusion devices
By using a 9060 sandblasting machine and PC40 plastic granules, the problem of high cost and long time consumption in deburring PEEK intervertebral fusion devices was solved, achieving efficient and low-cost deburring results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NINGBO ZHAOYING MEDICAL INSTR CO LTD
- Filing Date
- 2022-10-21
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, the deburring cost of PEEK material interbody fusion device is relatively high and time-consuming. Manual deburring has a low pass rate, and although dry ice deburring is fast, the cost is still high.
Deburring was performed using a 9060-type sandblasting machine and PC40 plastic granules. The working pressure of the sandblasting machine was adjusted to 0.3 MPa. The plastic granules were used to remove the burrs. The intervertebral fusion device was fixed by a tooling fixture and rotated 360 degrees. Finally, the residual particles were cleaned with an air gun.
It achieves rapid burr removal, reduces the processing cost of a single intervertebral fusion device, achieves a pass rate close to that of dry ice treatment, and is even cheaper.
Smart Images
Figure CN115429505B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of PEEK material processing technology, and in particular to a deburring process for intervertebral fusion devices. Background Technology
[0002] Interbody fusion cages are mainly used for decompression and fixation after discectomy and interbody fusion with bone grafting. The decompressed bone fragments are filled inside the interbody fusion cage. Autologous bone can increase the fusion rate. A large window should be left in the fusion cage to meet the needs of bone grafting.
[0003] Currently, polyetheretherketone (PEEK) resin is generally used as the main material for intervertebral fusion devices. PEEK material has the advantages of high temperature resistance, excellent mechanical properties, good self-lubrication, chemical corrosion resistance, flame retardancy, peel resistance, radiation resistance, stable insulation, hydrolysis resistance and easy processing. Furthermore, due to its high compatibility with the human body's internal environment, PEEK material can replace titanium metal.
[0004] However, PEEK interbody fusion cages, after machining, often have many fine, soft burrs that are extremely difficult to detect and remove. Since the fusion cage is an implant, clinical requirements dictate that it must be free of any fine burrs, and all must be removed before the product is sterilized.
[0005] Under current technology, burrs on interbody fusion devices are generally removed manually using a scalpel or by using dry ice. Manual burr removal has a low success rate, is time-consuming, and is costly. While dry ice burr removal is fast and has a high success rate, the cost remains high due to the large amount of dry ice used. Summary of the Invention
[0006] The purpose of this invention is to provide a deburring process for interbody fusion devices, which solves the problems of high cost and long time consumption in the existing technology for removing PEEK material from interbody fusion devices.
[0007] To achieve this objective, the present invention adopts the following technical solution: The present invention provides a deburring process for interbody fusion devices, comprising the following steps:
[0008] S1. Prepare a 9060 type sandblasting machine, adjust the parameters of the sandblasting machine, and adjust the working pressure of the sandblasting machine to 0.3MP;
[0009] S2, place the intervertebral fusion device in the basket of the sandblasting machine;
[0010] S3, aim the sandblasting gun at the intervertebral fusion device and spray the particles inside the sandblasting machine onto the intervertebral fusion device along the gun;
[0011] S3, remove the interbody fusion device from the basket and use an air gun to clean any remaining particles from the device.
[0012] Preferably, the granules are PC40 plastic granules.
[0013] Preferably, the sandblasting machine contains 5 kg of PC40 plastic granules.
[0014] Preferably, steps S1 and S2 further include connecting the intervertebral fusion device to the tooling and fixing the tooling inside the basket.
[0015] Beneficial effects: By using a sandblasting machine to spray particles onto the outer surface of the interbody fusion device, burrs can be quickly removed. At the same time, by recycling the sprayed particles, the cost of treating the interbody fusion device can be reduced. The treatment effect and treatment time can be similar. Compared with the dry ice deburring method, the cost can be reduced. Attached Figure Description
[0016] Figure 1 This is a flowchart of the deburring process for the intervertebral fusion device of the present invention. Detailed Implementation
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.
[0018] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0020] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.
[0021] Currently, PEEK interbody fusion devices are deburred using either manual methods or dry ice. However, manual deburring is inefficient, costing around 2 yuan per device and taking about two minutes. The pass rate of manually deburred devices is also low because the device is held by hand, creating blind spots that allow burrs to remain, resulting in a pass rate of only 70%. Dry ice is more expensive, costing around 1 yuan per device. Although the processing time is reduced to 30 seconds and the pass rate is increased to 95%, further cost reduction is still needed.
[0022] To solve the above problems, such as Figure 1 As shown, the present invention provides a deburring process for interbody fusion devices, comprising the following steps:
[0023] S1. Prepare a 9060 model sandblasting machine, with 5 kg of PC40 plastic granules inside.
[0024] The above steps can be performed using PC40 plastic. The plastic granules can remove the burrs on the intervertebral fusion device more cleanly, and the plastic granules can be reused to reduce the cost of burr removal per operation.
[0025] S2. Connect the intervertebral fusion device to the tooling. Typically, the tooling has a threaded head, and the intervertebral fusion device has a threaded hole. By connecting the threaded hole and the threaded head, the intervertebral fusion device can be fixed on the tooling. The tooling can be installed in the working chamber of the sandblasting machine. During sandblasting, it can avoid the use of hands or other clamping tools to contact the surface of the intervertebral fusion device, thus avoiding blind spots and improving the efficiency of burr removal.
[0026] S3, raise the sandblasting machine to 0.3MP, so that the PC40 plastic particles inside have a certain initial velocity and are sprayed onto the surface of the intervertebral fusion device on the tooling to remove burrs.
[0027] S4. Start the sandblasting machine and perform sandblasting. Control the sandblasting distance within 100 to 150 mm, and rotate the tooling to drive the intervertebral fusion device to rotate 360 degrees.
[0028] S5, remove the interbody fusion device from the sandblasting machine, and at the same time blow away the residual particles on the interbody fusion device with an air gun.
[0029] By cleaning the burrs on the interbody fusion device through the above steps and recycling the plastic particles from the sandblasting machine, the cost of cleaning a single interbody fusion device can be reduced to 0.36 yuan. At the same time, the pass rate and cleaning time of the cleaned interbody fusion device are close to those of dry ice.
[0030] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. An intervertebral cage deburring process for an intervertebral cage made of PEEK material; characterized in that, Includes the following steps: S1. Prepare a 9060 type sandblasting machine, adjust the parameters of the sandblasting machine, and adjust the working pressure of the sandblasting machine to 0.3MP; S2, place the intervertebral fusion device in the basket of the sandblasting machine; Between steps S1 and S2, the intervertebral fusion device is screwed onto the tooling and the tooling is fixed inside the basket. The tooling is provided with a threaded head and the intervertebral fusion device is provided with a threaded hole. The intervertebral fusion device is fixed onto the tooling through the connection between the threaded hole and the threaded head. The tooling is installed inside the working chamber of the sandblasting machine. S3, aim the sandblasting gun at the intervertebral fusion device and spray the particles inside the sandblasting machine onto the intervertebral fusion device along the gun; S3, Remove the interbody fusion device from the basket and use an air gun to clean the residual particles on the device; the particles are PC40 plastic particles.
2. As described in claim 1, characterized in that, The sandblasting machine contains 5 kg of PC40 plastic granules.