A production apparatus for injectable tricalcium / tetracalcium phosphate materials

Abstract

This utility model discloses a production device for injectable tricalcium phosphate / tetracalcium phosphate material in the field of bone repair material production technology. It is used to mix tricalcium phosphate and tetracalcium phosphate powders and includes a mixing mechanism, a driving mechanism, and an auxiliary mechanism. The mixing mechanism includes a spherical mixer with a T-shaped annular track on its outer surface. The driving mechanism includes a hollow shaft perpendicular to the axis of the annular track and several pairs of rollers at the end of the hollow shaft. This design, by using a spherical mixer, allows for multi-directional compound tumbling during mixing. It can rotate along the axis of the hollow shaft and simultaneously along the axis of the annular track, which helps to re-tumble and thoroughly mix the layered powders. Furthermore, the multi-directional tumbling also helps to eliminate dead angles, allowing the powder to tumble and mix in multiple dimensions.

Description

Technical Field

[0001] This utility model relates to the field of bone repair material production, specifically to a production device for injectable tricalcium phosphate / tetracalcium phosphate material. Background Technology

[0002] Injectable bone repair materials are generally made by mixing powdered compound materials and liquid materials into a paste before surgery and then injecting it. The powdered compound materials are mainly composed of tricalcium phosphate powder and tetracalcium phosphate powder in a specific ratio, and functional ions are added.

[0003] Tricalcium phosphate particle size should be controlled at 20-50μm to ensure degradation rate, while tetracalcium phosphate needs to be controlled at 1-10μm to promote hydration reaction. When compounding powder materials, due to the different particle sizes and densities of the two powders, conventional mixing devices only mechanically stir and turn, which can easily lead to uneven mixing, resulting in differences in local bone function and hindering repair. Utility Model Content

[0004] The purpose of this invention is to provide a production device for injectable tricalcium / tetracalcium phosphate materials, which solves the problem of uneven mixing in existing compound production devices.

[0005] This utility model achieves the above objectives through the following technical solutions: A production apparatus for injectable tricalcium / tetracalcium phosphate material, used for mixing tricalcium phosphate and tetracalcium phosphate powders, includes a mixing mechanism, a driving mechanism, and an auxiliary mechanism. The mixing mechanism includes a spherical mixer with a T-shaped annular track on its outer surface. The driving mechanism includes a hollow shaft perpendicular to the axis of the annular track and several pairs of rollers at the ends of the hollow shaft. The rollers clamp the annular track to drive the spherical mixer to rotate via the hollow shaft. The auxiliary mechanism drives the rollers to rotate the spherical mixer along the axis of the annular track.

[0006] As a preferred embodiment of this utility model, the surface of the spherical mixer is provided with a cover plate, and the cover plate is provided with a fixing device for sealing and fixing with the spherical mixer when the cover plate is closed. The cover plate is used for feeding and discharging materials. When rotating upward, the material is fed, and when rotating downward, the mixed powder material is poured out.

[0007] As a preferred embodiment of this utility model, the annular track includes an extension and a pressing part. The hollow shaft end is provided with several connecting ears, and the rollers are arranged on the connecting ears to contact both sides of the pressing part. By providing connecting ears, this embodiment provides at least two sets of rollers in the circumferential direction of the annular track, with each set including two pairs of rollers, thereby achieving the purpose of supporting the spherical mixer.

[0008] In a preferred embodiment of this utility model, the hollow shaft is supported by a base, and the hollow shaft and the base are connected by at least two bearings. A second helical gear is provided on the outer surface of the hollow shaft, and a driving part is provided inside the base to drive the hollow shaft to rotate through the second helical gear. In this embodiment, by driving the hollow shaft to rotate, the spherical mixer rotates and mixes along the direction of the hollow shaft. The rotational mixing has a flipping effect, which can flip the layered powder to the top for thorough mixing.

[0009] As a preferred embodiment of this utility model, the surface of the roller that contacts the outer side of the pressing part is provided with driving teeth, the outer side of the pressing part is provided with corresponding tooth grooves, and the shaft of the roller is also provided with a first helical gear. The auxiliary mechanism is used to drive the first helical gear to rotate so that the roller rolls along the annular track. This embodiment enables the roller to drive the spherical mixer to rotate along the annular track by providing driving teeth.

[0010] As a preferred embodiment of this utility model, the auxiliary mechanism includes a shaft rotatably disposed inside the hollow shaft. The end of the shaft is provided with a third helical gear meshing with a first helical gear. A braking device is also provided in the base. The end of the hollow shaft away from the roller has an opening. The braking device extends into the opening and is connected to the shaft. The braking device is used to limit the rotation of the shaft so that the roller with drive teeth rotates when the hollow shaft rotates. This embodiment further provides a method for driving the roller. By setting the shaft inside the hollow shaft, the shaft can rotate with the hollow shaft, thus not driving the roller to rotate. When the shaft is braked, the roller is driven to rotate through the helical gear.

[0011] In a preferred embodiment of this utility model, the shaft and the hollow shaft are rotatably connected by a damping bearing, which is used to rotate with the hollow shaft when the shaft is not braked.

[0012] The beneficial effects of this utility model are as follows: by setting a spherical mixer, the spherical mixer can be flipped in multiple directions during mixing. It can rotate along the hollow axis and also rotate along the annular track axis at the same time. This is conducive to flipping up the layered powder and mixing it thoroughly. Moreover, the flipping in multiple directions can also help eliminate the flipping dead angle, so that the powder can be tumbled and mixed in multiple dimensions. Attached Figure Description

[0013] Figure 1 This is a front view of the overall structure of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 This utility model Figure 1 A schematic diagram of the spherical mixer after it has been rotated 90°. Figure 4 This utility model Figure 2 Enlarged view of the structure of section A in the middle; Figure 5 This utility model Figure 2 Enlarged view of the structure of section B; In the diagram: 1. Base; 2. Mixing mechanism; 21. Spherical mixer; 22. Cover plate; 23. Pressing part; 24. Extension part; 25. Gear groove; 3. Drive mechanism; 31. Hollow shaft; 32. Connecting lug; 33. Roller; 34. Drive gear; 35. First helical gear; 36. Drive part; 37. Second helical gear; 4. Auxiliary mechanism; 41. Shaft; 42. Damping bearing; 43. Braking device; 44. Third helical gear. Detailed Implementation

[0014] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0015] Example 1 like Figure 1-5 As shown, a production apparatus for injectable tricalcium / tetracalcium phosphate material is used to mix tricalcium phosphate and tetracalcium phosphate powders. It includes a mixing mechanism 2, a driving mechanism 3, and an auxiliary mechanism 4. The mixing mechanism 2 includes a spherical mixer 21, and the outer surface of the spherical mixer 21 is provided with a T-shaped annular track. The driving mechanism 3 includes a hollow shaft 31 perpendicular to the axis of the annular track and several pairs of rollers 33 disposed at the end of the hollow shaft 31. The rollers 33 are used to clamp the annular track so that the spherical mixer 21 is driven to rotate by the hollow shaft 31. The auxiliary mechanism 4 is used to drive the rollers 33 to drive the spherical mixer 21 to rotate along the axis of the annular track.

[0016] This solution uses a spherical mixer 21, which can rotate in multiple directions during mixing. It can rotate along the axis of the hollow shaft 31 and also rotate along the axis of the circular track at the same time. This helps to re-turn up the layered powder and mix it thoroughly. In addition, the multiple-direction rotation can also help to eliminate the dead corners of the rotation, so that the powder can be tumbled and mixed in multiple dimensions.

[0017] In one specific implementation, a cover plate 22 is provided on the surface of the spherical mixer 21. The cover plate 22 is provided with a fixing device for sealing and fixing with the spherical mixer 21 when the cover plate 22 is closed. The cover plate 22 is used for feeding and discharging. Feeding is performed when rotating upward and discharging the mixed powder material when rotating downward. In order to ensure that the part of the cover plate 22 entering the spherical mixer 21 does not affect the powder rolling, the inner side of the cover plate 22 and the inner side of the spherical mixer 21 form a complete spherical inner wall.

[0018] Please see Figure 3 Furthermore, the annular track includes an extension 24 and a pressing part 23. The hollow shaft 31 has several connecting ears 32 at its end. Rollers 33 are disposed on the connecting ears 32 to contact both sides of the pressing part 23. In this solution, by setting the connecting ears 32, the rollers 33 are arranged in three sets in the circumferential direction of the annular track. Each set includes two pairs of rollers 33. Each pair of rollers 33 is connected by a connecting ear 32 and presses against both sides of the pressing part 23 to achieve the purpose of supporting the spherical mixer 21.

[0019] The hollow shaft 31 is supported by the base 1, and the hollow shaft 31 and the base 1 are connected by at least two bearings. The outer surface of the hollow shaft 31 is provided with a second helical gear 37, and the base 1 is provided with a drive unit 36 ​​to drive the hollow shaft 31 to rotate through the second helical gear 37. In this solution, by driving the hollow shaft 31 to rotate, the spherical mixer 21 rotates and mixes along the direction of the hollow shaft 31. The rotational mixing has a flipping effect, which can flip the layered powder to the top for thorough mixing.

[0020] Specifically, the roller 33 that contacts the outer side of the pressing part 23 is provided with a drive tooth 34, and the outer side of the pressing part 23 is provided with a tooth groove 25. The shaft of the roller 33 is also provided with a first helical gear 35. The auxiliary mechanism 4 is used to drive the first helical gear 35 to rotate so that the roller 33 rolls along the annular track. This solution enables the roller 33 to drive the spherical mixer 21 to rotate along the annular track by providing the drive tooth 34.

[0021] The auxiliary mechanism 4 includes a shaft 41 rotatably disposed inside the hollow shaft 31. A third helical gear 44, meshing with a first helical gear 35, is provided at the end of the shaft 41. A brake device 43 is also provided inside the base 1. The end of the hollow shaft 31 away from the roller 33 has an opening. The brake device 43 extends into the opening and is connected to the shaft 41. The brake device 43 is used to restrict the rotation of the shaft 41 so that the roller 33 with the drive tooth 34 rotates when the hollow shaft 31 rotates. This solution further provides a method for driving the roller 33. By providing the shaft 41 inside the hollow shaft 31, the shaft 41 can rotate with the hollow shaft 31, thus not driving the roller 33 to rotate. When the shaft 41 is braked, the roller 33 is driven to rotate through the helical gear. The shaft 41 and the hollow shaft 31 are rotatably connected by a damping bearing 42, which is used to allow the shaft 41 to rotate with the hollow shaft 31 when it is not braked.

[0022] It should be noted that if the production demand is large, the spherical mixer 21 will be relatively heavy, and the load on a single hollow shaft 31 and roller 33 will be high. Figure 1-3 As shown, an auxiliary support device, including rollers, shafts and other driven support structures, can be added to the right side of the spherical mixer 21 without a drive source.

[0023] Open the cover plate 22 and pour in tricalcium phosphate and tetracalcium phosphate powder raw materials, as well as other additives. Close the cover plate 22 and start the drive unit 36 ​​to drive the hollow shaft 31 to rotate. The hollow shaft 31 drives the spherical mixer 21 to rotate. At this time, the shaft 41 and the hollow shaft 31 are relatively stationary. When the brake device 43 is activated, the rotation of the shaft 41 is restricted, and the shaft and the hollow shaft 31 rotate relative to each other. When the hollow shaft 31 rotates, the roller 33 with drive teeth 34 rotates around the axis of the hollow shaft 31. The axis of the hollow shaft 31 coincides with the shaft 41. The first helical gear 35 revolves around the fixed third helical gear 44, causing the first helical gear 35 to drive the roller to rotate, which in turn drives the spherical mixer 21 to rotate along the hollow shaft 31 and also along the circular track, increasing the change of the tumbling dimension and improving the mixing efficiency.

[0024] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A production apparatus for injectable tricalcium / tetracalcium phosphate material, used for mixing tricalcium phosphate and tetracalcium phosphate powders, characterized in that, The system includes a mixing mechanism (2), a driving mechanism (3), and an auxiliary mechanism (4). The mixing mechanism (2) includes a spherical mixer (21), the outer surface of which is provided with a T-shaped annular track. The driving mechanism (3) includes a hollow shaft (31) perpendicular to the axis of the annular track and several pairs of rollers (33) at the end of the hollow shaft (31). The rollers (33) are used to clamp the annular track so that the spherical mixer (21) is driven to rotate by the hollow shaft (31). The auxiliary mechanism (4) is used to drive the rollers (33) to drive the spherical mixer (21) to rotate along the axis of the annular track.

2. The production apparatus for injectable tricalcium / tetracalcium phosphate material according to claim 1, characterized in that, The surface of the spherical mixer (21) is provided with a cover plate (22), and the cover plate (22) is provided with a fixing device for sealing and fixing with the spherical mixer (21) when the cover plate (22) is closed.

3. The production apparatus for injectable tricalcium / tetracalcium phosphate material according to claim 1, characterized in that, The annular track includes an extension (24) and a clamping part (23). The hollow shaft (31) has several connecting ears (32) at its end, and rollers (33) are arranged on the connecting ears (32) to contact both sides of the clamping part (23).

4. The production apparatus for injectable tricalcium / tetracalcium phosphate material according to claim 1, characterized in that, The hollow shaft (31) is supported by the base (1), and the hollow shaft (31) and the base (1) are connected by at least two bearings. The outer surface of the hollow shaft (31) is provided with a second helical gear (37), and the base (1) is provided with a drive unit (36) to drive the hollow shaft (31) to rotate through the second helical gear (37).

5. The production apparatus for injectable tricalcium / tetracalcium phosphate material according to claim 4, characterized in that, The roller (33) that contacts the outside of the pressing part (23) has a drive tooth (34) on its surface, and a tooth groove (25) is provided on the outside of the pressing part (23). The roller (33) also has a first helical gear (35) on its shaft. The auxiliary mechanism (4) is used to drive the first helical gear (35) to rotate so that the roller (33) rolls along the circular track.

6. The production apparatus for injectable tricalcium / tetracalcium phosphate material according to claim 5, characterized in that, The auxiliary mechanism (4) includes a shaft (41) rotatably disposed inside the hollow shaft (31). The end of the shaft (41) is provided with a third helical gear (44) that meshes with the first helical gear (35). A brake device (43) is also provided in the base (1). The end of the hollow shaft (31) away from the roller (33) has an opening. The brake device (43) extends into the opening and is connected to the shaft (41). The brake device (43) is used to restrict the rotation of the shaft (41) so that the roller (33) with the drive tooth (34) rotates when the hollow shaft (31) rotates.

7. The production apparatus for injectable tricalcium / tetracalcium phosphate material according to claim 6, characterized in that, The shaft (41) and the hollow shaft (31) are rotatably connected by a damping bearing (42).

Images