阅读说明：本技术 一种植入剂包膜及干燥装置 (Implant diolame and drying device ) 是由 尹述贵 王实强 贾少微 张涛 刘庆哲 于 2018-08-22 设计创作，主要内容包括：本发明提供一种植入剂包膜及干燥装置,包括排片机、推片机、包膜池、药片管道、药片输送装置、干燥装置；所述排片机与所述推片机连接,所述包膜池为圆弧型；所述包膜池内装有包膜液；所述药片管道的入口与所述推片机连接,所述药片管道的出口与所述干燥装置连接,所述药片输送装置用于输送药片管道内的植入剂药片。本发明提供的一种植入剂包膜及干燥装置,结构简单,操作方便,避免了原有技术造成植入剂药片互相粘连、包膜破损,导致植入剂药片释放度不能稳定的缺陷,且本发明提供的植入剂的包膜及干燥装置适用于大规模生产。(The invention provides an implant coating and drying device, which comprises a tablet arranging machine, a tablet pushing machine, a coating pool, a tablet pipeline, a tablet conveying device and a drying device, wherein the tablet conveying device is arranged on the tablet arranging machine; the film arranging machine is connected with the film pushing machine, and the film coating pool is arc-shaped; the coating pool is filled with a coating liquid; the inlet of the tablet pipeline is connected with the tablet pushing machine, the outlet of the tablet pipeline is connected with the drying device, and the tablet conveying device is used for conveying the implant tablets in the tablet pipeline. The coating and drying device for the implant provided by the invention is simple in structure and convenient to operate, and overcomes the defect that the release degree of the implant tablet cannot be stable due to mutual adhesion and coating damage of the implant tablets in the prior art.)

1. An implant coating and drying device is characterized by comprising a tablet arranging machine, a tablet pushing machine, a coating pool, a tablet pipeline, a tablet conveying device and a drying device; the film arranging machine is connected with the film pushing machine, and the film coating pool is arc-shaped; the coating pool is filled with a coating liquid; the inlet of the tablet pipeline is connected with the tablet pushing machine, the outlet of the tablet pipeline is connected with the drying device, and the tablet conveying device is used for conveying the implant tablets in the tablet pipeline.

2. The implant enveloping and drying apparatus of claim 1, wherein the tablet conduit comprises a first tablet conduit, a second tablet conduit, a third tablet conduit, a fourth tablet conduit; the first tablet pipeline, the second tablet pipeline, the third tablet pipeline and the fourth tablet pipeline are all stainless steel pipes, are of an integrated structure and are sequentially connected;

the first tablet pipeline is connected with the tablet pushing machine, the third tablet pipeline is arranged in an inclined mode, the inclination angle is 5-20 degrees, the fourth tablet pipeline is arranged vertically, and an outlet of the fourth tablet pipeline extends into the drying device.

3. The implant enveloping and drying apparatus of claim 2, wherein the bottom end of the second tablet conduit is attached to the inner side of the enveloping tank, and the second tablet conduit is immersed in the enveloping solution.

4. The implant enveloping and drying apparatus of claim 2, wherein said second tablet conduit is provided with mesh openings, said mesh openings having a density of at least 100/30 cm; the diameter of the mesh is 2 mm.

5. The implant enveloping and drying apparatus of claim 2, wherein the second tablet conduit has a pipe diameter gradually decreasing from the inlet to the outlet, and the pipe diameter of the outlet of the second tablet conduit is 1.5-2mm larger than the diameter of the implant tablet.

6. The implant encapsulation and drying device of claim 2, wherein the second tablet conduit is provided with a first pushrod track and the third tablet conduit is provided with a second pushrod track;

the tablet conveying device comprises a first driving device, a rotating push rod, a second driving device and a translation push rod, and the first driving device is arranged at the position of the circle center of the coating pool; a second driving device is arranged at the upper end of the third tablet pipeline;

one end of the rotary push rod is connected with the first driving device, and the other end of the rotary push rod extends into the second tablet pipeline through the first push rod track;

one end of the translation push rod is connected with the second driving device, and the other end of the translation push rod extends into the third tablet pipeline through the second push rod rail.

7. The implant enveloping and drying apparatus of claim 6, wherein said rotary push rod and said translational push rod are made of steel material with teflon attached on the surface.

8. The implant encapsulation and drying device according to claim 5, wherein the encapsulation liquid is a PLA solution, and the concentration of the PLA solution is 5-9%.

9. The implant enveloping and drying apparatus as claimed in claim 1, wherein the drying apparatus comprises a blower, an air duct, a collecting device, an automatic control system, a push rod, a third driving device, the lower end of the air duct is connected to the blower through an air duct of the blower, and the blower supplies wind power to the air duct through the air duct of the blower; a screen is arranged at the joint of the air pipe and the blower pipeline; the screen is arranged obliquely, and the inclination angle is 10 degrees; the collecting device is arranged at one end of the lower part of the screen;

the third driving device is connected with the push rod and used for controlling the push rod to push the implant tablets on the screen mesh into the collecting device;

the air pipe is of a double-layer sleeve structure, the diameter of the outer layer is 10mm larger than that of the inner layer, and a gap between the wall of the outer layer and the wall of the inner layer is formed;

small holes are uniformly distributed on the inner layer cylinder wall; the distance between every two small holes is 2mm, and the aperture is 1 mm;

the top of the air pipe is provided with an opening for filling the implant tablets and discharging the gas blown out of the sleeve;

the automatic control system is used for controlling the rotating speed of the blower and further controlling the suspension time of the implant tablets in the air pipe.

10. The implant enveloping and drying apparatus as claimed in claim 9, wherein a plurality of small holes are uniformly distributed on said screen mesh, the interval between each of said small holes is 2mm, and the aperture of said small hole is 3 mm.

Technical Field

The invention relates to a medicine coating device, in particular to an implant coating and drying device.

Background

In the research of the sustained-release implant, the selection of biodegradable materials is crucial, polylactic acid is a polymer with excellent biocompatibility and degradability, the final product of in vivo metabolism is water and carbon dioxide, the intermediate product lactic acid is also a normal sugar metabolite in vivo, can not be accumulated in organs, and is a medical auxiliary material approved by the national drug administration. In order to ensure the compatibility of medicines, the implant envelope is prepared by adopting the material which is the same as or similar to the sustained-release matrix as far as possible, but the viscosity of polylactic acid is very high, the wet implant which is just soaked in the envelope solution is mutually adhered, the yield of the envelope is damaged, and the implant envelope is not suitable for the envelope operation. For example, chinese patent CN200610152903.7 discloses a long-acting sustained-release preparation of naltrexone, which uses polylactic acid to coat naltrexone microspheres, and chinese patent CN201110457641.6 discloses a long-acting naltrexone implant, which also uses DL-polylactic acid to coat the compressed naltrexone microspheres. However, as mentioned above, the polylactic acid has too high viscosity, and the coated microspheres or tablets are close to each other or contact with the bottom surface of the tray when being placed on the tray during drying, which causes the surface of the coated film to be adhered and cracked, thus affecting the integrity of the medicine.

In the traditional process, in order to realize various effects of coloring, gastric dissolution, enteric dissolution, slow release, controlled release and the like of the tablet, a coating material without viscosity is used, and the coating of the coating material without viscosity can be carried out in a coating pan in a spray drying way. However, the coating material for preparing the long-acting slow-release medicine is polylactic acid, the viscosity is high, and a plurality of tablets are coated in a container at the same time, so that the tablets are bound together.

The current research and published literature technologies are laboratory-level preparation processes, and large-scale production cannot be carried out, wherein a plurality of influence factors and obtained conditions for investigation and screening cannot be applied to large-scale production, because the active ingredients wrapped by the microspheres are different, the modes of adding the internal phase emulsion into the external phase solution are different, the components of the solutions are different, the optimal preparation process conditions are changed difficultly to be predicted due to the fact that the adopted specific auxiliary materials are different in components, and research needs to be carried out again to obtain the sustained-release implant with ideal sustained-release effect and treatment effect.

The Chinese invention patent (a slow release fertilizer coating device: 201810333180.3) discloses a slow release fertilizer coating device, which comprises a supporting device and a coating mechanism arranged on the supporting device; the film coating mechanism comprises a film coating cylinder and a feeding hopper fixed at the upper end of the film coating cylinder; a screen is fixed on the inner surface of the peripheral side of the coating cylinder, and a discharge notch is formed at the joint of the screen and the side wall of the coating cylinder; the surface of the side wall of the coating cylinder is provided with a circular through hole matched with the liquid spraying pipe, and the liquid spraying pipe penetrates through the side wall of the coating cylinder through the circular through hole; and a heating pipe is fixed on the inner surface of the peripheral side of the coating cylinder. Although the coating device of this patent is simple, use the hydrojet pipe to carry out the diolame in its patent, can't evenly spray to there being sticky diolame liquid at all, it can cause the adhesion of material grain and diolame section of thick bamboo wall, the incomplete and inhomogeneous condition of diolame, and some bags of some thickness of some bags of slow release fertilizer after the diolame in addition, the homogeneity is poor, causes slow release performance's inhomogeneous for cost increase.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the implant coating and drying device which is simple in structure and convenient to operate, and avoids the problem that the prior art can only carry out coating preparation of the implant in a laboratory and cannot carry out large-scale production.

In order to solve the technical problems, the invention adopts the technical scheme that: an implant coating and drying device is characterized by comprising a tablet arranging machine, a tablet pushing machine, a coating pool, a tablet pipeline, a tablet conveying device and a drying device; the film arranging machine is connected with the film pushing machine, the film pushing machine is positioned at one end of the film coating pool, and the film coating pool is arc-shaped; the coating pool is filled with a coating liquid; the inlet of the tablet pipeline is connected with the tablet pushing machine, the outlet of the tablet pipeline is connected with the drying device, and the tablet conveying device is used for conveying the implant tablets in the tablet pipeline.

Preferably, the tablet conduits include a first tablet conduit, a second tablet conduit, a third tablet conduit, a fourth tablet conduit; the first tablet pipeline, the second tablet pipeline, the third tablet pipeline and the fourth tablet pipeline are all stainless steel pipes, are of an integrated structure and are sequentially connected;

the first tablet pipeline is connected with the push rod machine, the third tablet pipeline is arranged in an inclined mode, the inclination angle is 5-20 degrees, the fourth tablet pipeline is arranged vertically, and an outlet of the fourth tablet pipeline extends into the drying device.

Preferably, the first tablet pipelines are arranged in parallel, the inlet of each first tablet pipeline is connected with the tablet pushing machine, and the outlet of each first tablet pipeline is connected with the inlet of each second tablet pipeline; the second tablet pipeline is arc-shaped, and the laminating is in the diolame pond, and the third tablet pipeline sets up for the slope, and the fourth tablet pipeline sets up perpendicularly.

Preferably, the bottom end of the second tablet pipeline is attached to the inner side of the coating pool, and the second tablet pipeline is soaked in the coating liquid.

Preferably, the length of the second tablet pipeline is 30cm, the second tablet pipeline is provided with meshes, and the density of the meshes is at least 100/30 cm; the diameter of the mesh is 2 mm.

Preferably, the pipe diameter of the second tablet pipeline is gradually reduced from the inlet to the outlet, the diameter of the pipe diameter inlet of the second tablet pipeline is 0.5-1.5mm larger than that of the outlet, and the pipe diameter of the outlet of the second tablet pipeline is 1.5-2mm larger than that of the implant tablet.

Preferably, the pipe diameter inlet of the second tablet pipeline is 0.9mm larger than the outlet, and the pipe diameter outlet of the second tablet pipeline is 1.5mm larger than the diameter of the implant tablet.

Preferably, the second tablet conduit and the third tablet conduit are respectively provided with a first push rod track and a second push rod track;

the tablet conveying device comprises a first driving device, a rotating push rod, a second driving device and a translation push rod, and the first driving device is arranged at the position of the circle center of the coating pool; a second driving device is arranged at the upper end of the third tablet pipeline;

one end of the rotary push rod is connected with the first driving device, and the other end of the rotary push rod extends into the second tablet pipeline through the first push rod track;

one end of the translation push rod is connected with the second driving device, and the other end of the translation push rod extends into the third tablet pipeline through the second push rod rail.

Preferably, the rotating push rod and the translation push rod are both made of steel materials with teflon (polytetrafluoroethylene) attached to the surfaces.

Preferably, the coating solution is a PLA solution, and the concentration of the PLA solution is 5-9%.

Preferably, the drying device comprises a blower, an air pipe, a collecting device, an automatic control system, a push rod and a third driving device, the lower end of the air pipe is connected with the blower through an air duct of the blower, and a screen is arranged at the joint of the air pipe and a pipeline of the blower; the screen is arranged obliquely, and the inclination angle is 10 degrees; the collecting device is arranged at one end of the lower part of the screen;

the third driving device is connected with the push rod and used for controlling the push rod to push the implant tablets on the screen mesh into the collecting device;

the air pipe is of a double-layer sleeve structure, the diameter of the outer layer is 10mm larger than that of the inner layer, and a certain gap is formed between the wall of the outer layer and the wall of the inner layer;

small holes are uniformly distributed on the inner layer cylinder wall; the distance between every two small holes is 2mm, and the aperture is 1 mm;

the top of the air pipe is provided with an opening for filling the implant tablets and discharging the gas blown out of the sleeve;

the automatic control system is used for controlling the rotating speed of the blower and further controlling the suspension time of the implant tablets in the air pipe.

Preferably, a plurality of small holes are uniformly distributed on the screen, the distance between every two small holes is 2mm, and the aperture of each small hole is 3 mm.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, PLA with high viscosity can be uniformly coated on the surface of each implant tablet through a special coating device, so that the problem of incomplete coating caused by adhesion of the implant tablets is effectively avoided, and the problem of incomplete coating when the PLA is used as a coating liquid in the prior art is solved.

(2) The diameters of the tablet pipeline (particularly the second tablet pipeline) and the implant tablet in the enveloping device provided by the invention are important, the diameter of the outlet of the second tablet pipeline provided by the invention is slightly larger than the diameter of the implant tablet by 1.5-2mm, the consistency of the enveloping thickness of the implant tablet can be effectively ensured, and the problem of uneven enveloping quality is avoided.

(3) The drying device provided by the invention has the advantages that the wind power is related to the weight of the implant tablet, so that the implant tablet can quickly form a coating in a suspended state for shaping, and the integrity of the coating is prevented from being damaged due to contact with other objects.

(4) The invention provides a coating and drying device for an implant for the first time, which is simple in structure and convenient to operate, and overcomes the defect that the release degree of implant tablets cannot be stable due to mutual adhesion and damaged coating of the implant tablets in the prior art.

(5) The pipe diameter of the second tablet pipeline provided by the invention is gradually reduced from the inlet to the outlet, so that the integrity of the envelope is ensured, and the thickness of the implant tablet can be uniform.

(6) The characteristic that the coating liquid provided by the invention is a high-viscosity material which can lose viscosity after being dried in air to form a film determines that the implant tablet can not be coated together with a plurality of implant tablets like a traditional boiling dryer, but the drying device provided by the invention can be coated in a single piece to prevent adhesion.

(7) The automatic control system in the drying device provided by the invention can control the film forming and drying time of the implant tablet, when the drying time is 30s, the effect is best, and the film forming is prevented from being too fast or too slow; the drying is too fast, and the implant tablet is easy to generate bubbles; the drying is too slow, which affects the production efficiency.

(8) The integrity, uniformity, thickness and coating speed of the coating device provided by the invention are related to the aperture of the second tablet pipeline, the concentration of the coating liquid and the elapsed time in the coating liquid, and the three are affected together, so that the coating is prevented from being too slow, the coating liquid is easy to permeate inwards, and the microspheres and the framework are damaged;

(9) the device for coating and drying the implant provided by the invention can realize one-in-one coating, non-adhesion and temperature control and control, ensures that the coating difference of each tablet is very small, and the release degree difference of each tablet is less than 3% in a release degree test.

(10) The first driving device and the rotary push rod provided by the invention can control the coating time of each tablet in the coating solution, so that the coating thickness of each tablet is controlled, and when the time for the implant tablet to pass through the coating solution is 30s, the coating thickness is proper and the integrity is good.

Drawings

FIG. 1 is a schematic structural view of an encapsulation and drying apparatus for an implant according to the present invention;

the specific meanings of the symbols in the drawings are as follows:

1: arranging a sheet machine; 2: pushing the sheet machine; 3: a coating pool; 4: coating liquid; 5: a first tablet conduit; 6: a second tablet conduit; 7: a third tablet conduit; 8: a fourth tablet conduit; 9: a first driving device; 10: a second driving device; 11: rotating the push rod; 12: translating the push rod; 13: a blower; 14: an air duct; 15: a collection device; 16: screening a screen; 17: a third driving device; 18: a push rod.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural view of a coating and drying apparatus for an implant according to the present invention.

An implant coating and drying device comprises a tablet arranging machine 1, a tablet pushing machine 2, a coating pool 3, a tablet pipeline, a tablet conveying device and a drying device; the film arranging machine 1 is connected with a film pushing machine 2, the film pushing machine 2 is positioned at one end of a film coating pool 3, and the film coating pool 3 is arc-shaped; the coating liquid 4 is filled in the coating pool 3; the inlet of the tablet pipeline is connected with the tablet pushing machine 2, the outlet of the tablet pipeline is connected with the drying device, and the tablet conveying device is used for conveying the implant tablets in the tablet pipeline.

The implant coating and drying device provided by the invention further comprises a micro motor and an automatic control device, wherein the tablet pushing machine 2 is electrically connected with the micro motor, a pushing tablet is arranged in the tablet pushing machine 2 and is electrically connected with the automatic control device, and the automatic control device is used for controlling the micro motor to drive the pushing tablet to push the implant tablet to move.

The tablet pipeline provided by the invention is divided into four sections; a first tablet pipeline 5, a second tablet pipeline 6, a third tablet pipeline 7 and a fourth tablet pipeline 8; the first tablet pipeline 5, the second tablet pipeline 6, the third tablet pipeline 7 and the fourth tablet pipeline 8 are all stainless steel pipes, the first tablet pipeline 5, the second tablet pipeline 6, the third tablet pipeline 7 and the fourth tablet pipeline 8 are of an integrated structure, and the first tablet pipeline 5, the second tablet pipeline 6, the third tablet pipeline 7 and the fourth tablet pipeline 8 are sequentially connected;

the first tablet pipeline 5 is arranged in parallel, the inlet of the first tablet pipeline 5 is connected with the tablet pushing machine 2, and the outlet of the first tablet pipeline 5 is connected with the inlet of the second tablet pipeline 6; second tablet pipeline 6 is the arc setting, and the laminating is in diolame pond 3, and third tablet pipeline 7 sets up for the slope, and fourth tablet pipeline 8 sets up perpendicularly.

The first tablet pipeline 5 provided by the invention is connected with the tablet pushing machine 2, the third tablet pipeline 7 is obliquely arranged, the inclination angle is 5-20 degrees, the fourth tablet pipeline 8 is vertically arranged, and the outlet of the fourth tablet pipeline 8 extends into the drying device. The bottom end of the second tablet pipeline 6 provided by the invention is attached to the inner side of the coating tank 3, and the second tablet pipeline 6 is soaked in the coating liquid 4.

The length of the second tablet pipeline 6 provided by the invention is 30cm, the second tablet pipeline 6 is provided with dense meshes, and the density of the meshes is at least 100/30 cm; the diameter of the mesh is 2 mm.

The pipe diameter of the second tablet pipeline 6 is gradually reduced from the inlet to the outlet, and the difference between the pipe diameter of the outlet of the second tablet pipeline 6 and the diameter of the implant tablet is 1.5-2 mm. When the pipe diameter inlet of the second tablet pipeline is 0.9mm larger than the outlet, and the pipe diameter outlet of the second tablet pipeline is 1.5mm larger than the diameter of the implant, the thickness and the integrity of the coating film are better.

The second tablet pipeline 6 and the third tablet pipeline 7 provided by the invention are respectively provided with a first push rod track and a second push rod track; first push rod track and rotatory push rod 11 looks adaptation, first push rod track are the opening that the width is 2mm, and rotatory push rod 11 diameter is 1.5 mm. The second push rod track and translation push rod 12 looks adaptation, the second push rod track is the opening that the width is 2mm, and translation push rod 12 diameter is 1.5 mm.

The tablet conveying device provided by the invention comprises a first driving device 9, a rotating push rod 11, a second driving device 10 and a translation push rod 12, wherein the first driving device 9 is arranged at the position of the circle center of the coating tank 3; the upper end of the third tablet pipeline 7 is provided with a second driving device 10;

one end of a rotary push rod 11 is connected with the first driving device 9, and the other end of the rotary push rod extends into the second tablet pipeline 6 through a first push rod track; one end of the translational push rod 12 is connected with the second driving device 10, and the other end thereof extends into the third tablet pipeline 7 through the second push rod track. The rotating push rod 11 and the translating push rod 12 are both made of steel materials with teflon attached to the surfaces, wherein teflon is actually made of polytetrafluoroethylene.

The coating liquid 4 is PLA solution, and the concentration of the PLA solution is 5-9%.

The drying device comprises a blower 13, an air pipe 14, a collecting device 15, an automatic control system, a push rod 18 and a third driving device 17, wherein the lower end of the air pipe 14 is connected with the blower 13 through an air channel of the blower, and a screen 16 is arranged at the joint of the air pipe 13 and a pipeline of the blower; the screen 16 is arranged obliquely, and the inclination angle is 10 degrees; the collecting device 15 is arranged at the lower end of the screen 16;

the third driving device 17 is connected with a push rod 18 and is used for controlling the push rod 18 to push the implant tablets on the screen 16 into the collecting device 15;

the air pipe 14 is of a double-layer sleeve structure, a certain gap is formed between the wall of the outer layer and the wall of the inner layer, and the diameter of the outer layer is 10mm larger than that of the inner layer; small holes are uniformly distributed on the inner layer cylinder wall; the distance between every two small holes is 2mm, and the aperture is 1 mm; the top of the air pipe 14 is provided with an opening for filling the implant tablets and discharging the air blown out of the sleeve; the automatic control system is used for controlling the rotating speed of the blower and further controlling the suspension time of the implant tablets in the air pipe, and the suspension time is 30 s.

A plurality of small holes are uniformly distributed on the screen 16, the distance between every two small holes is 2mm, and the aperture of each small hole is 3 mm.

The treatment process of the implant enveloping device comprises the following steps:

the tablet discharging machine 1 discharges the implant tablets into the tablet pushing machine 2, the tablet pushing machine 2 pushes the implant tablets into the tablet pipeline, the implant tablets enter the second tablet pipeline 6 along the first tablet pipeline 5, the time of the tablets in the second tablet pipeline 6 is controlled to be 15-50 s, preferably 30s through the first driving device 9 and the rotary push rod 11, and the temperature of the coating process is controlled to be 33-40 ℃, preferably 37 ℃; after the coating in the second tablet pipeline 6 is finished, the coated tablets enter a third tablet pipeline 7, and the implant tablets are pushed into a drying device for drying through a second driving device 10 and a translation push rod 12; the implant tablets pass through the fourth tablet pipeline 8 and then enter a drying device, the drying device utilizes the lifting force of airflow to lift the implant tablets falling from the top, so that the implant tablets are suspended in the airflow, and the high-viscosity emulsion coated on the surfaces of the implant tablets is volatilized and dried to form a coating film without viscosity; the automatic control system controls the rotating speed of the blower to enable the suspension drying time of the implant tablets in the wind tunnel to be 30 s; after the implant tablets are suspended for 30s, the automatic control system controls the rotating speed of the blower 13 to be reduced, so that the buoyancy of the wind is reduced, and the implant tablets fall into the screen 16; the third driving device 17 is now used to drive the pushing rod 18 to push the implant tablets into the collecting device 15 for collection. The suspension drying temperature provided by the invention is 18-24 ℃, and preferably, the drying temperature is 20 ℃.