Method for manufacturing a bone cement injection cannula and bone cement injection cannula

Abstract

The present application relates to the technical field of medical devices, and in particular to a manufacturing method of a bone cement injection sleeve and the bone cement injection sleeve. The manufacturing method of the bone cement injection sleeve comprises the following steps: S1, clamping a hollow pipe material on a spindle clamp of a longitudinal cutting machine tool; S2, clamping a chamfering tool on a power tool holder to process an orifice chamfer on the hollow pipe material; S3, clamping a cutting tool on the power tool holder to cut off the hollow pipe material to process a sleeve; S4, clamping the sleeve on a sub-shaft clamp of the longitudinal cutting machine tool, and clamping a punching tool on the power tool holder to punch the opening of the sleeve; S5, clamping a milling tool on the power tool holder to mill a groove on the inner wall surface of the taper opening of the sleeve; S6, clamping a brush on the power tool holder to deburr the taper opening with the processed groove; S7, processing the surface of the sleeve; and S8, performing injection molding in an injection molding machine to form a finished product. The present application can reduce the manufacturing cycle, reduce the process, and improve the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a method for manufacturing a bone cement injection cannula and the bone cement injection cannula itself. Background Technology

[0002] Osteoporotic vertebral compression fractures are one of the most common complications of osteoporosis, frequently occurring in the elderly. Vertebroplasty (PKP) has become an important treatment for osteoporotic vertebral compression fractures due to its safety, efficiency, and minimally invasive nature. Vertebroplasty is a technique that strengthens the vertebral body by injecting bone cement into it. Among these techniques, the cannula-pushrod injection method is a relatively common method of bone cement injection due to its safety, efficiency, and low cost.

[0003] Bone cement injection cannulas, along with puncture needles, guide needles, injection cannulas, expanders, manual bone drills, and bone cement injection devices, constitute a bone cement injection cannulas assembly for vertebroplasty, used in vertebroplasty surgery. Currently, bone cement injection cannulas produced by orthopedic companies generally use high-hardness stainless steel bars over two meters in length. These bars undergo cutting, stamping, milling, manual chamfering and deburring, and other post-processing steps to form the cannulas, which are then injection molded from PC particles. Existing methods for manufacturing bone cement injection cannulas suffer from high reliance on manual labor, numerous processes, long manufacturing cycles, low production efficiency, and high costs.

[0004] Therefore, a method for manufacturing a bone cement injection sleeve and a bone cement injection sleeve are needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a method for manufacturing a bone cement injection sleeve and a bone cement injection sleeve, which can reduce the manufacturing cycle, reduce the number of processes, and improve production efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The method for manufacturing a bone cement injection sleeve includes the following steps:

[0008] S1. Clamp the hollow tube material onto the spindle fixture of the slitting machine tool;

[0009] S2. The power tool holder holds the chamfering tool to process the chamfer of the hole on the hollow tube;

[0010] S3. The power tool holder clamps the cutting tool and cuts the hollow tube material to produce a sleeve according to the set length.

[0011] S4. The sleeve is clamped onto the secondary shaft fixture of the longitudinal cutting machine tool, and the power tool holder holds the stamping tool to stamp the opening of the sleeve until a tapered opening with a set taper is formed.

[0012] S5, the power seat clamps the milling cutter to mill a groove on the inner wall surface of the taper mouth of the sleeve pipe;

[0013] S6, the power seat clamps the brush to deburr the processed groove of the taper mouth;

[0014] S7, the surface of the sleeve pipe is processed;

[0015] S8, injection molding is performed in an injection molding machine to form a finished product.

[0016] Further, in the step S4, the opening of the sleeve pipe is punched according to a feeding amount of 0.1mm.

[0017] Further, the cutting edge of the punching cutter is free of burrs and cracks.

[0018] Further, the step S7 comprises the following steps:

[0019] S71, the sleeve pipe is cleaned to remove oil stains on the surface of the sleeve pipe.

[0020] Further, the step S7 further comprises the following steps:

[0021] S72, the surface of the sleeve pipe is electro-polished to improve the surface quality of the sleeve pipe.

[0022] Further, the step S7 further comprises the following steps:

[0023] S73, the surface of the sleeve pipe is passivated.

[0024] Further, in the step S8, before injection molding, it is required to ensure that the mold surface in the injection molding machine is dry and free of grease and other contaminants.

[0025] Further, in the step S8, the setting temperature range of the injection molding machine is 120-130℃.

[0026] Further, in the step S8, the PC particles and the one end of the sleeve pipe with the taper mouth are put into the mold of the injection molding machine, and the mold automatically completes clamping, locking, injection, opening and ejection.

[0027] The bone cement injection sleeve is made by the manufacturing method of the bone cement injection sleeve.

[0028] The beneficial effects of the present application are as follows:

[0029] The manufacturing method of the bone cement injection sleeve provided by the application comprises the following steps: clamping a hollow pipe material on a main shaft clamp of a longitudinal cutting machine, clamping a chamfering tool on a power tool holder to process an orifice chamfer on the hollow pipe material, cutting the sleeve by using a cutting tool, clamping the sleeve on a sub-shaft clamp of the longitudinal cutting machine, clamping a punching tool on the power tool holder to punch a taper, milling a groove on the taper, deburring, taking out the sleeve for surface treatment, and then injection molding to obtain a finished product. By integrating the processing of the orifice chamfer, punching, milling and deburring on the longitudinal cutting machine, the manufacturing cycle can be effectively reduced, the process can be reduced, and the production efficiency can be improved.

[0030] The bone cement injection sleeve provided by the application can reduce the manufacturing cycle, reduce the process, and improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] Fig. 1 is a flow chart of the manufacturing method of the bone cement injection sleeve of the application;

[0032] Fig. 2 is a schematic view of the finished product in the manufacturing method of the bone cement injection sleeve of the application.

[0033] In the drawings:

[0034] 1, sleeve; 2, injection molding part. DETAILED DESCRIPTION

[0035] The technical solutions of the application will be further described below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the application, and not to limit the application. In addition, it should be noted that, for the convenience of description, only the parts related to the application are shown in the drawings, not all.

[0036] In the description of the application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0038] In the process of manufacturing the bone cement injection sleeve, in order to reduce the manufacturing cycle, reduce the process, improve the production efficiency, such as Figs. 1-2 As shown in the figure, the present application provides a manufacturing method of a bone cement injection sleeve. The manufacturing method of the bone cement injection sleeve comprises the following steps:

[0039] S1, clamping the hollow pipe material on the main shaft clamp of the longitudinal cutting machine tool;

[0040] S2, the power tool holder clamps the chamfer tool to process the chamfer of the opening on the hollow pipe material;

[0041] S3, the power tool holder clamps the cutting tool to cut the hollow pipe material according to the set length to process the sleeve 1;

[0042] S4, clamping the sleeve 1 to the auxiliary shaft clamp of the longitudinal cutting machine tool, and the power tool holder clamps the stamping tool to stamp the opening of the sleeve 1 until the tapered opening with the set taper is formed;

[0043] S5, the power tool holder clamps the milling tool to mill the groove on the inner wall surface of the tapered opening of the sleeve 1;

[0044] S6, the power tool holder clamps the brush to deburr the tapered opening with the processed groove;

[0045] S7, processing the surface of the sleeve 1;

[0046] S8, injection molding in the injection molding machine to form the finished product.

[0047] By combining the processes of blanking, stamping, milling and deburring on the longitudinal cutting lathe, the bone cement injection sleeve can be quickly and mass-produced, effectively shortening the product production cycle and reducing the manufacturing cost.

[0048] Further, in step S4, the opening of the sleeve 1 is stamped according to a feed amount of 0.1mm. Smaller feed amount is adopted for stamping, which can avoid cracks on the opening of the sleeve 1 caused by too fast stamping speed, so as to ensure that the quality of the tapered opening formed by stamping meets the requirements.

[0049] Further, the blade of the stamping tool is free of burrs and cracks. The quality of the stamping tool is ensured, the process of machining the taper is ensured to be smooth, and the quality of the machined taper meets the requirements.

[0050] Further, the step S7 comprises the following steps:

[0051] S71, clean the sleeve 1 to remove oil on the surface of the sleeve 1. By cleaning the surface of the sleeve 1, the surface of the sleeve 1 is ensured to be clean, thereby preparing for the subsequent electro-polishing and passivation.

[0052] Further, the step S7 further comprises the following steps:

[0053] S72, electro-polish the surface of the sleeve 1 to improve the surface quality of the sleeve 1. By electro-polishing, the quality of the surface of the sleeve 1 can be improved to ensure the smoothness of the surface of the sleeve 1.

[0054] Further, the step S7 further comprises the following steps:

[0055] S73, passivate the surface of the sleeve 1. By passivation, an oxide layer can be formed on the surface of the sleeve 1 to improve the corrosion resistance of the sleeve 1.

[0056] Further, in step S8, before injection molding, the surface of the mold in the injection molding machine needs to be dry and free of grease and other contaminants. By ensuring the cleanliness of the mold, the subsequent injection molding operation can be ensured to be smooth, and the quality of the injection molded product can meet the requirements.

[0057] Further, in step S8, the temperature range of the injection molding machine is set to 120-130℃. Specifically, in this embodiment, considering the characteristics of the injection molding machine, the temperature is set to 120℃.

[0058] Further, in step S8, the PC particles and the end of the sleeve 1 with the taper are placed into the mold of the injection molding machine, and the mold automatically completes clamping, locking, injection, opening, and ejection. Through the above injection molding process, the finished product can be integrally formed, thereby ensuring that the quality of the product formed after injection molding meets the requirements. And ensure the connection strength between the injection molding part 2 and the sleeve 1.

[0059] The embodiment also provides a bone cement injection sleeve made by the above method. By integrating the processes of chamfering the hole, stamping, milling, and deburring on the longitudinal cutting machine, the manufacturing cycle can be effectively reduced, the process can be reduced, and the production efficiency can be improved.

[0060] Obviously, the above embodiments of the present application are merely example for clearly explaining the present application, and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A method of manufacturing a bone cement injection cannula, characterized in that, The method comprises the following steps: S1, clamping the hollow pipe on the spindle clamp of the longitudinal cutting machine; S2, clamping the chamfering tool on the hollow pipe to process the chamfer of the opening; S3, clamping the cutting tool to cut the hollow pipe into a sleeve according to the set length; S4, clamping the sleeve on the sub-spindle clamp of the longitudinal cutting machine, and clamping the stamping tool to stamp the opening of the sleeve until a tapered opening with a set taper is formed; S5, clamping the milling tool to mill a groove on the inner wall of the tapered opening of the sleeve; S6, clamping the brush to deburr the tapered opening with the groove; S7, processing the surface of the sleeve; S8, injecting in the injection molding machine to form a finished product; By integrating the processing of chamfering, stamping, milling and deburring on the longitudinal cutting machine, the manufacturing cycle can be effectively reduced, the process can be reduced, and the production efficiency can be improved.

2. The method of manufacturing a cement injection sleeve according to claim 1, wherein, In the step S4, the opening of the sleeve is stamped at a feed rate of 0.1 mm.

3. The method of manufacturing a cement injection sleeve according to claim 1, wherein, The cutting edge of the stamping tool is free of chipping and cracking.

4. The method of manufacturing a cement injection sleeve according to claim 1, wherein, The step S7 comprises the following steps: S71, cleaning the sleeve to remove oil stains on the surface of the sleeve.

5. The method of manufacturing a cement injection sleeve according to claim 4, wherein, The step S7 further comprises the following steps: S72, electro-polishing the surface of the sleeve to improve the surface quality of the sleeve.

6. The method of manufacturing a cement injection sleeve according to claim 5, wherein, The step S7 further comprises the following steps: S73, passivating the surface of the sleeve.

7. The method of manufacturing a cement injection sleeve according to claim 1, wherein, In the step S8, before injection molding, the mold surface in the injection molding machine needs to be dry and free of grease and other contaminants.

8. The method of manufacturing a cement injection sleeve according to claim 1, wherein, In the step S8, the set temperature range of the injection molding machine is 120-130℃.

9. The method of manufacturing a cement injection sleeve according to claim 1, wherein, In the step S8, the PC particles and the end of the sleeve with the tapered opening are placed in the mold of the injection molding machine, and the mold automatically completes clamping, locking, injection, opening and ejection.

10. A bone cement injection sleeve, characterized in that The bone cement injection sleeve is manufactured by the method according to any one of claims 1-9.

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