CN113058804B - Medicine-containing catheter coating device - Google Patents
Medicine-containing catheter coating device Download PDFInfo
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- CN113058804B CN113058804B CN202110365334.9A CN202110365334A CN113058804B CN 113058804 B CN113058804 B CN 113058804B CN 202110365334 A CN202110365334 A CN 202110365334A CN 113058804 B CN113058804 B CN 113058804B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/09—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating separate articles
- B05C3/109—Passing liquids or other fluent materials into or through chambers containing stationary articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/11—Vats or other containers for liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
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Abstract
The invention relates to the technical field of medical drug-containing catheter equipment, in particular to a drug-containing catheter coating device, which comprises: the medicine storage tank is provided with a feed back port; the coating container is communicated with the medicine storage tank through a coating pipeline, a discharge hole communicated with the feed back hole is formed in the coating container, and an opening for inserting a guide pipe is formed in the coating container; the clamp is arranged at the opening and used for fixing the catheter; and the air pumping device is communicated with the medicine storage tank through a first air pipe and can pump air into the medicine storage tank or pump air out of the medicine storage tank. The medicine-containing catheter coating device greatly reduces the probability and the area of the exposed liquid medicine, avoids the pollution of the liquid medicine and greatly reduces the volatilization of the liquid medicine; meanwhile, the volatilization of the solvent in the medicine coating process is reduced, and the waste of the solvent is reduced.
Description
Technical Field
The invention relates to the technical field of medical drug-containing catheter equipment, in particular to a drug-containing catheter coating device.
Background
The medical medicine-containing catheter is produced through coating one layer of medicine onto the catheter, dissolving medicine in solvent to form medicine liquid, coating solvent to corrode the surface of the catheter and to make the medicine adhere to the surface of the catheter, volatilizing the solvent and drying the catheter to attach medicine. Such solvents are present and need to be volatilized during the coating process, but volatilization is difficult to control. In the prior art, when a medicine-containing catheter is produced, the surface of the catheter is generally coated with medicine liquid, or the catheter is immersed into a container filled with the medicine liquid; the two production modes are easy to expose the liquid medicine, not only are easy to pollute the liquid medicine, but also lead the liquid medicine and the solvent to be seriously volatilized.
Disclosure of Invention
The invention aims to provide a medicine-containing catheter coating device, which aims to solve the technical problem that liquid medicine and solvent are easy to leak out before or in the coating process to cause serious volatilization in the prior art.
In order to achieve the above object, the present invention provides a drug-containing catheter coating device comprising:
the medicine storage tank is provided with a feed back port;
the coating container is communicated with the medicine storage tank through a coating pipeline, a discharge hole communicated with the feed back hole is formed in the coating container, and an opening for inserting a guide pipe is formed in the coating container;
the clamp is arranged at the opening and used for fixing the catheter;
and the air pumping device is communicated with the medicine storage tank through a first air pipe and can pump air into the medicine storage tank or pump air out of the medicine storage tank. Greatly reducing the probability and the area of the exposed liquid medicine, avoiding the pollution of the liquid medicine and greatly reducing the volatilization of the liquid medicine; meanwhile, the volatilization of the solvent in the medicine coating process is reduced, and the waste of the solvent is reduced.
Preferably, the feed back port is arranged on the upper end face of the medicine storage tank, the discharge port is arranged on the lower end face of the coating container, and the coating container is positioned right above the medicine storage tank; the upper end surface of the medicine storage tank and the lower end surface of the coating container are both provided with through holes for the coating pipeline to pass through. Can better keep the sealing performance of the medicine storage tank and reduce the volatilization of the liquid medicine and the solvent.
Preferably, the lower end of the coating pipe is close to the bottom surface of the medicine storage tank, and the upper end of the coating pipe is close to the opening of the coating container. The liquid medicine is easier to be delivered to the coating container; the liquid medicine stored in the medicine storage tank at one time can be coated with more catheters, thereby reducing the times of increasing the liquid medicine and improving the production efficiency.
Preferably, the coating pipe located in the coating container is provided with a plurality of discharge holes along the axial direction thereof. The liquid medicine is directly sprayed to the catheter when sprayed out, so that the coating efficiency is accelerated.
Preferably, the volume ratio of the coating container to the medicine storage tank is 1: 1.2 to 1.6. The compressed amount of air and the loss of the liquid medicine in the conveying process can be counteracted, and the normal operation of the coating process is ensured.
Preferably, the air pumping device comprises a power cylinder, an air storage cylinder, a connector and an air supply device;
the first piston in the power cylinder divides the interior of the power cylinder into a first cavity and a second cavity, and the gas supply device is communicated with the first cavity and the second cavity through a second gas pipe and a third gas pipe respectively;
the second piston in the gas storage cylinder divides the gas storage cylinder into a third cavity and a fourth cavity, the third cavity is communicated with the gas supply device through a fourth gas pipe, and the fourth cavity is communicated with the medicine storage tank through the first gas pipe;
the first piston is provided with a first piston rod, the second piston is provided with a second piston rod, and the first piston rod is connected with the second piston rod through the connector. The liquid medicine is stably conveyed in the medicine storage tank and the coating container in an air pressure mode, and the conveying speed is easy to control, so that the production efficiency can be ensured.
Preferably, the volume ratio of the coating container to the gas storage cylinder is 1: 1.2 to 1.5. The gas in the gas storage cylinder can convey the liquid medicine in the medicine storage tank to the coating container, so that the volume of the liquid medicine in the coating container meets the specific requirement.
Preferably, the air pumping device further comprises an air path air pipe communicated with the air supply device, and the second air pipe and the fourth air pipe are communicated with the air path air pipe. The second air pipe and the fourth air pipe can input air to the first cavity and the third cavity more synchronously, and the liquid medicine is conveyed more timely.
Preferably, the pumping device further comprises a stroke adjusting block and a support, the support is located between the power cylinder and the gas storage cylinder, the stroke adjusting block is detachably mounted on the support, and the stroke adjusting block is used for limiting the distance of the connector moving from the power cylinder to the gas storage cylinder. The extrusion force of the gas on the liquid medicine and the gravity of the liquid level difference generated by the lifting of the liquid medicine are balanced, so that the phenomenon that the liquid medicine of the coating container is too much and even overflows due to too high air pressure is avoided.
Preferably, the clamp is provided with a clamping groove for fixing the catheter; the fixture is provided with a mounting groove, and the mounting groove is communicated with the plurality of clamping grooves. The clamp can be arranged at the opening to improve the sealing performance of the coating container and reduce the volatilization amount of the liquid medicine when the catheter is coated in the coating container while the catheter is clamped.
The invention relates to a medicine-containing catheter coating device, which at least has the following beneficial effects: the device is characterized in that a sealed medicine storage tank is arranged to store the liquid medicine in a sealed mode, a clamp for fixing the guide pipe is installed at an opening of the coating container, the liquid medicine stored in the medicine storage tank can be conveyed into a coating pipeline through an air pumping device, the liquid medicine is coated on the guide pipe, and the residual liquid medicine can flow back into the medicine storage tank; therefore, in the process of producing the medicine-containing catheter, the liquid medicine circulates between the closed medicine storage tank and the coating container with the clamp at the opening, thereby greatly reducing the probability and the area of the exposed liquid medicine, avoiding the pollution of the liquid medicine and greatly reducing the volatilization of the liquid medicine; meanwhile, the volatilization of the solvent in the medicine coating process is reduced, the waste of the solvent is reduced, and the concentration change of the liquid medicine in the coating process caused by the volatilization of the solvent is also reduced; after the volatilization of the liquid medicine and the solvent is reduced, on the other hand, the air pollution is also reduced, and the trouble of purifying air is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of the construction of the coating apparatus of the present invention;
FIG. 2 is a schematic cross-sectional view of a coating apparatus according to the present invention;
FIG. 3 is a schematic sectional view of the medicine storage tank of the present invention;
FIG. 4 is a schematic view of the construction of the coating vessel of the present invention;
FIG. 5 is a schematic structural view of a coated pipe of the present invention;
FIG. 6 is a schematic view of the structure of the clamp of the present invention.
In the drawings: 1-medicine storage tank, 11-feed back port, 12-through hole, 13-inclined part, 2-coating container, 21-discharge port, 22-opening, 3-coating pipeline, 31-discharge hole, 4-clamp, 41-clamp groove, 42-installation groove, 43-handle, 5-air pumping device, 51-power cylinder, 511-first piston, 512-first cavity, 513-second cavity, 514-first piston rod, 52-air storage cylinder, 521-second piston, 522-third cavity, 523-fourth cavity, 524-second piston rod, 53-connector, 55-second air pipe, 56-third air pipe, 57-fourth air pipe, 58-air passage air pipe, 59-stroke adjusting block, 510-support, 6-a first air pipe, 7-a guide pipe, 8-a bottom plate, 9-a return pipe, 10-a feeding funnel and 101-a valve.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 to 6, a drug-containing catheter application device includes:
the medicine storage tank 1 is provided with a feed back port 11;
a coating container 2 which is communicated with the medicine storage tank 1 through a coating pipeline 3, wherein the coating container 2 is provided with a discharge hole 21 communicated with the feed back hole 11, and the coating container 2 is provided with an opening 22 for inserting the conduit 7;
a clamp 4 mounted at the opening 22 for fixing the catheter 7;
and the air pumping device 5 is communicated with the medicine storage tank 1 through a first air pipe 6 and can pump air into or pump air out of the medicine storage tank 1.
The drug storage tank 1 stores the drug solution applied to the catheter 7, the application container 2 stores the catheter 7 and stores the drug solution when the catheter 7 is applied, and the pumping device 5 transfers the drug solution in the drug storage tank 1 into the application container 2 to apply the drug solution to the catheter 7. The coating container 2 is communicated with the medicine storage tank 1 through a coating pipeline 3, the medicine storage tank 1 is provided with a feed back port 11, and the coating container 2 is provided with a discharge port 21 communicated with the feed back port 11; the jig 4 fixing the guide tube 7 is installed at the opening 22 of the coating container 2 so that the guide tube 7 can be inserted into the coating container 2; the liquid medicine in the medicine storage tank 1 enters the coating container 2 through the coating pipeline 3 under the action of the air pumping device 5, the liquid medicine is coated on the guide pipe 7, and after the coating is finished, the liquid medicine in the coating container 2 flows back to the medicine storage tank 1 through the discharge port 21 and the feed back port 11.
In the prior art, when a medicine-containing catheter is produced, the surface of the catheter is generally coated with medicine liquid, or the catheter is immersed into a container filled with the medicine liquid; the two production modes are easy to expose the liquid medicine, not only are easy to pollute the liquid medicine, but also lead the liquid medicine to be seriously volatilized. According to the technical scheme, the sealed medicine storage tank 1 is arranged to store the medicine liquid in a sealed mode, the clamp 4 for fixing the guide pipe 7 is installed at the opening 22 of the coating container 2, the medicine liquid stored in the medicine storage tank 1 can be conveyed into the coating pipeline 3 through the air pumping device 5, the medicine liquid is coated on the guide pipe 7, and the residual medicine liquid can flow back into the medicine storage tank 1; therefore, in the process of producing the medicine-containing conduit 7, the liquid medicine circulates between the closed medicine storage tank 1 and the coating container 2 with the clamp 4 arranged at the opening 22, thereby greatly reducing the probability and the area of the exposed liquid medicine, avoiding the pollution of the liquid medicine and greatly reducing the volatilization of the liquid medicine; meanwhile, the volatilization of the solvent in the medicine coating process is reduced, the waste of the solvent is reduced, and the concentration change of the liquid medicine caused by the volatilization of the solvent in the production process is also reduced; after the volatilization of the liquid medicine and the solvent is reduced, on the other hand, the air pollution is also reduced, and the trouble of purifying air is saved.
Preferably, a return pipe 9 for communicating the drug storage tank 1 and the coating container 2 is inserted into the discharge port 21 and the return port 11. Even if the discharge port 21 and the return port 11 communicate with each other, there is still a gap between the coating container 2 and the drug storage tank 1, and therefore, there is a possibility that the drug solution leaks from the gap between the two; the return pipe 9 is inserted in the discharge port 21 and the return port 11, and the upper end and the lower end of the return pipe 9 are in an open state, so that the liquid medicine in the coating container 2 flows back to the medicine storage tank 1 through the return tank, and the leakage of the liquid medicine is effectively avoided. Preferably, the lower end of the return pipe 9 is close to the bottom surface of the medicine storage tank 1, so that the medicine liquid flowing out from the return pipe 9 can flow out into the medicine storage tank 1 at the bottom surface close to the medicine storage tank 1, and the splashing and other situations can not occur, thereby reducing the loss and volatilization of the medicine liquid.
Preferably, the medicine storage tank 1 is provided with a feeding funnel 10, and the feeding funnel 10 is provided with a valve 101. When the liquid medicine in the medicine storage tank 1 is insufficient, the liquid medicine can be conveniently supplemented into the medicine storage tank 1 through the feeding funnel 10, and the sealing performance of the medicine storage tank 1 can be improved and the volatilization of the liquid medicine and the solvent can be reduced only by using the feeding funnel 10; install valve 101 on feed hopper 10, when need not add the liquid medicine to medicine storage tank 1, then close valve 101, guarantee medicine storage tank 1's leakproofness, reduce the volatilization of liquid medicine and solvent.
More preferably, the bottom of the medicine tank 1 is provided with an inclined portion 13, and the inclined portion 13 is inclined from the side of the hopper 10 toward the side of the coating pipe 3 from the top down. The inclined portion 13 is provided to concentrate the liquid medicine in the medicine storage tank 1 on the side corresponding to the coating pipe 3, so that the liquid medicine in the medicine storage tank 1 can be more easily extruded into the coating pipe 3.
Further, the feed back port 11 is arranged on the upper end surface of the medicine storage tank 1, the discharge port 21 is arranged on the lower end surface of the coating container 2, and the coating container 2 is positioned right above the medicine storage tank 1; the upper end surface of the medicine storage tank 1 and the lower end surface of the coating container 2 are both provided with through holes 12 for the coating pipeline 3 to pass through.
Specifically, the coating container 2 is positioned right above the medicine storage tank 1, the lower end face of the coating container 2 is tightly attached to the upper end face of the medicine storage tank 1, and the feed back port 11 of the medicine storage tank 1 is opposite to and communicated with the discharge port 21 of the coating container 2; the coating pipe 3 communicates the coating container 2 and the drug storage tank 1, so that a through hole 12 is opened in correspondence to the upper end surface of the drug storage tank 1 and the lower end surface of the coating container 2, the coating pipe 3 is inserted into the through hole 12, and the upper and lower ends are inserted into the coating container 2 and the drug storage tank 1, respectively. Because the liquid medicine is mainly stored in medicine storage tank 1, consequently setting medicine storage tank 1 to seal structure, and setting up coating container 2 and can keeping medicine storage tank 1's leakproofness better directly over medicine storage tank 1's feed back 11 and through-hole 12, reduce the volatilization of liquid medicine and solvent.
Further, the lower end of the coating pipe 3 is close to the bottom surface of the medicine tank 1, and the upper end of the coating pipe 3 is close to the opening 22 of the coating container 2.
The coating pipeline 3 is a hollow structure, the lower end of the coating pipeline is provided with an opening for the liquid medicine to enter, and the upper end of the coating pipeline is provided with an opening for the liquid medicine to flow out. The general process of applying the medical solution to the catheter 7 is: the air pumping device 5 pumps air into the medicine storage tank 1, the pressure in the medicine storage tank 1 is increased, and the medicine liquid enters the coating pipeline 3 from the medicine storage tank 1; then the liquid medicine flows into the coating container 2 through the opening at the upper end of the coating pipeline 3, and when the liquid medicine in the coating container 2 reaches a certain amount, the conduit 7 is soaked in the liquid medicine, so that the liquid medicine is coated on the conduit 7 in the coating container 2; then the air pumping device 5 pumps the air in the medicine storage tank 1 to ensure that the pressure in the medicine storage tank 1 becomes normal, and the residual medicine liquid in the coating conduit 7 in the coating container 2 flows back to the medicine storage tank 1 through the discharge port 21 and the feed back port 11. When the air pumping device 5 pumps air into the medicine storage tank 1, the air is positioned above the medicine liquid, and the pressure at the opening at the lower end of the coating pipeline 3 is equal to the sum of the air pressure in the medicine storage tank 1 and the medicine liquid pressure, so that the lower end of the coating pipeline 3 is close to the bottom surface of the medicine storage tank 1, the pressure for driving the medicine liquid into the coating pipeline 3 is higher under the condition of certain air pressure, and the medicine liquid is easier to convey into the coating container 2; on the other hand, the lower end of the coating pipeline 3 is close to the bottom surface of the medicine storage tank 1, so that most of the medicine liquid in the medicine storage tank 1 can enter the coating pipeline 3, more guide pipes 7 can be coated by the medicine liquid stored in the medicine storage tank 1 at one time, the times of increasing the medicine liquid are reduced, and the production efficiency is improved. The upper end of the coating pipe 3 is close to the opening 22 of the coating container 2, so that the liquid medicine can be directly coated on the conduit 7 when entering the coating container 2, and the height of the opening at the upper end of the coating conduit 7 is high, so that when a large amount of liquid medicine is loaded in the coating container 2, the opening at the upper end of the coating conduit 7 is also subjected to less pressure or even no pressure of the liquid medicine, so that the liquid medicine can be prevented from flowing back from the coating conduit 7 into the medicine storage tank 1.
Further, the coating pipe 3 located in the coating container 2 is provided with a plurality of discharge holes 31 along the axial direction thereof.
The discharge hole 31 is positioned in the coating container 2, namely the discharge hole 31 is close to the upper end of the coating pipeline 3, and the upper end of the coating pipeline 3 is in a closed state; the chemical liquid flows from the discharge holes 31 into the coating container 2, and the plurality of discharge holes 31 are arranged in the axial direction of the coating pipe 3. The discharge port 21 is arranged in such a way that the liquid medicine can be prevented from being sprayed to the opening 22 of the coating container 2 when being sprayed out from the coating pipeline 3, and then the liquid medicine is splashed out to cause waste; the discharge port 21 is arranged on the side wall of the coating pipeline 3, so that the liquid medicine is directly sprayed to the guide pipe 7 when being sprayed out, and the coating efficiency is improved; since the coating tube 3 communicates the drug storage tank 1 and the coating container 2, the upper end of the coating tube 3 is closed to reduce the volatilization of the drug solution and the solvent.
More preferably, the number of the coating lines 3 is plural, and the upper end surface of the drug storage tank 1 and the lower end surface of the coating container 2 are provided with the same number of through holes 12 as the number of the coating lines 3. The coating pipeline 3 is provided with a plurality of coating pipelines, so that the speed of the liquid medicine entering the coating container 2 can be increased, and the production efficiency is improved. When a plurality of coating pipes 3 are provided, the plurality of coating pipes 3 may be arranged around the guide pipe 7; for example, four coating pipes 3 are respectively located at four corners of the coating container 2, and the discharge hole 31 of each coating pipe 3 faces the guide pipe 7, so that the coating efficiency can be improved, and the coating uniformity can be improved.
Further, the volume ratio of the coating container 2 to the medicine storage tank 1 is 1: 1.2 to 1.6.
When the air pumping device 5 pumps air into the medicine storage tank 1, the pressure intensity in the medicine storage tank 1 is increased to convey the medicine liquid in the medicine storage tank 1 to the coating container 2 through the coating pipeline 3; the pumped air is compressed, and the liquid medicine in the medicine storage tank 1 has a certain loss difference before and after the conduit 7 is coated (part of the liquid medicine is coated on the conduit 7), so that the volume of the medicine storage tank 1 is larger than that of the coating container 2, the liquid medicine in the medicine storage tank 1 can be extruded by the air and lifted from the medicine storage tank 1 to the coating container 2, and the liquid medicine in the coating container 2 can soak the conduit 7. The volume ratio of the coating container 2 to the medicine storage tank 1 is specifically 1: 1.2-1.6, the compressed air and the loss of the liquid medicine in the conveying process can be offset, and the normal operation of the coating process is ensured.
Further, the pumping device 5 comprises a power cylinder 51, a gas storage cylinder 52, a connector 53 and a gas supply device;
the first piston 511 in the power cylinder 51 divides the power cylinder 51 into a first cavity 512 and a second cavity 513, and the gas supply device is respectively communicated with the first cavity 512 and the second cavity 513 through a second gas pipe 55 and a third gas pipe 56;
the second piston 521 in the gas cylinder 52 divides the interior of the gas cylinder 52 into a third cavity 522 and a fourth cavity 523, the third cavity 522 is communicated with the gas supply device through a fourth gas pipe 57, and the fourth cavity 523 is communicated with the medicine storage tank 1 through the first gas pipe 6;
a first piston rod 514 is mounted on the first piston 511, a second piston rod 524 is mounted on the second piston 521, and the first piston rod 514 and the second piston rod 524 are connected by the connector 53.
The gas storage cylinder 52 is used for storing gas pumped into the drug storage tank 1, the power cylinder 51 is used for extruding the gas in the gas storage cylinder 52 into the drug storage tank 1, the gas supply device (not shown) is used for inputting gas into the first cavity 512, the second cavity 513 and the third cavity 522, and the connector 53 is used for fixedly connecting the first piston rod 514 and the second piston rod 524. The volumes of the first cavity 512 and the second cavity 513 are not fixed, and the first piston 511 is mainly used as a boundary between the two cavities, and the first piston 511 can move in the power cylinder 51, so that the volumes of the first cavity 512 and the second cavity 513 are changed correspondingly along with the movement of the first piston 511; likewise, the volumes of the third and fourth cavities 522 and 523 are not fixed, and the volumes of the two cavities change as the second piston 521 moves in the reservoir cylinder 52. The medicine storage tank 1 needs to be provided with a corrosion-resistant sealing element, such as silica gel; the volatile gas of the liquid medicine may have certain corrosiveness, and the gas storage cylinder 52 and the first gas pipe 6 also need to have corrosion resistance; the air storage cylinder 52 is made of polytetrafluoroethylene material, and the first air pipe 6 is made of polytetrafluoroethylene material or a composite material of silica gel and hard glue.
The process of controlling the liquid medicine in the medicine storage tank 1 to be input into the coating container 2 by the air pumping device 5 is approximately as follows: the gas supply device inputs gas into the first cavity 512 through the second gas pipe 55, and the first piston 511 moves towards the second cavity 513 under the pushing of the gas in the first cavity 512; the first piston 511 moves to drive the first piston rod 514 to move towards the air storage cylinder 52; the first piston rod 514 drives the second piston rod 524 to move, so that the second piston 521 moves from the third cavity 522 to the fourth cavity 523 in the air storage cylinder 52 (in the process, the air supply device pumps air into the third cavity 522 through the fourth air pipe 57, and further the second piston 521 is driven to move from the third cavity 522 to the fourth cavity 523); the gas in the fourth cavity 523 is pushed by the second piston 521 to enter the drug storage tank 1 through the first gas tube 6, so as to extrude the drug solution and make the drug solution enter the coating container 2. After the conduit 7 is coated with the liquid medicine, the process that the pumping device 5 controls the liquid medicine in the coating container 2 to flow back to the medicine storage tank 1 is approximately as follows: the gas supply device inputs gas into the second cavity 513 through the third gas pipe 56, and the first piston 511 is pushed by the gas in the second cavity 513 to move towards the first cavity 512, so as to drive the first piston rod 514 to move towards one side of the power gas rod; the second piston rod 524 moves toward the power cylinder 51 along with the first piston rod 514, so that the second piston 521 moves toward the third cavity 522; the gas in the medicine storage tank 1 is conveyed into the fourth cavity 523 through the first gas pipe 6, the pressure in the medicine storage tank 1 is reduced, and the medicine liquid in the coating container 2 flows back into the medicine storage tank 1 through the discharge port 21 and the feed back port 11.
The air pumping device 5 is arranged in such a way that the liquid medicine can be stably conveyed in the medicine storage tank 1 and the coating container 2 in an air pressure mode, and the conveying speed is easy to control, so that the production efficiency can be ensured; on the other hand, the volume of the liquid medicine entering the coating pipeline 3 from the medicine storage tank 1 can be adjusted by controlling the air pressure, so that the volume change of the liquid medicine in the production process is adapted.
Further, the volume ratio of the coating container 2 to the gas cylinder 52 is 1: 1.2 to 1.5.
The gas cylinder 52 is used for storing gas, and the gas is specifically stored in the fourth cavity 523, so the volume of the gas cylinder 52 mainly refers to the maximum volume of the fourth cavity 523. When the second piston 521 pushes the gas in the fourth cylinder, the air is compressed, and the pressure at the balance of the compression is 9.8 times the weight of the liquid medicine in the coating container 2/the cross-sectional area of the medicine storage tank 1; the density of the liquid medicine is close to that of water or slightly heavier, about 1-1.2; therefore, the estimated pressure is 0.1-0.4 MPa, and the volume ratio of air compression is below 50%, so that the maximum ratio of the air storage cylinder 52 to the coating container 2 is 50%; the volume ratio of the coating container 2 to the reservoir cylinder 52 is set to 1: 1.2-1.5, the gas in the gas storage cylinder 52 can convey the liquid medicine in the medicine storage tank 1 to the coating container 2, so that the volume of the liquid medicine in the coating container 2 meets the specific requirement.
Further, the air pumping device 5 further comprises an air path air pipe 58 communicated with the air supply device, and the second air pipe 55 and the fourth air pipe 57 are communicated with the air path air pipe 58.
As described above, in the process of controlling the liquid medicine in the medicine storage tank 1 to be input into the coating container 2 by the air pumping device 5, the air supply device respectively inputs air into the first cavity 512 and the third cavity 522 through the second air pipe 55 and the fourth air pipe 57, so that the second piston 521 pushes the air in the fourth cavity 523; the air passage air pipe 58 is arranged, so that air can be input into the first cavity 512 and the third cavity 522 from the second air pipe 55 and the fourth air pipe 57 more synchronously, and the liquid medicine can be conveyed more timely.
Further, the pumping device 5 further comprises a stroke adjusting block 59 and a bracket 510, the bracket 510 is located between the power cylinder 51 and the reservoir cylinder 52, the stroke adjusting block 59 is detachably mounted on the bracket 510, and the stroke adjusting block 59 is used for limiting the distance that the connector 53 moves from the power cylinder 51 to the reservoir cylinder 52.
The whole coating device also comprises a bottom plate 8, wherein the bottom plate 8 is used for supporting the power cylinder 51, the gas storage cylinder 52, the medicine storage tank 1 and the like; the bracket 510 is arranged on the bottom plate 8 and is positioned between the power cylinder 51 and the gas storage cylinder 52; the stroke adjusting block 59 is detachably mounted on the bracket 510, when the first piston rod 514 and the second piston rod 524 move towards the side of the air storage cylinder 52, the connector 53 moves synchronously, and when the connector 53 moves to a certain distance, the stroke adjusting block 59 can abut against the connector 53 and limit the connector 53 to continue moving towards the side of the air storage cylinder 52; the stroke adjusting block 59 adjusts the strokes of the power cylinder 51 and the gas storage cylinder 52 by limiting the movement of the connector 53, so as to limit the amount of gas filled into the medicine storage tank 1, balance the extrusion force of the gas on the medicine liquid and the gravity of the liquid level difference generated by the lifting of the medicine liquid, and avoid the phenomenon that the medicine liquid of the coating container 2 is too much or even overflows due to too large air pressure.
Further, the clamp 4 is provided with a clamping groove 41 for fixing the catheter 7; the fixture 4 is provided with a mounting groove 42, and the mounting groove 42 is communicated with the plurality of clamping grooves 41.
The main body of the clamp 4 is a plate-shaped structure, a clamping groove 41 is arranged on the clamp 4, the guide pipes 7 can be clamped in the clamping groove 41, the part needing to be coated with the liquid medicine extends into the coating container, and one clamping groove 41 can clamp a plurality of guide pipes 7. The number of the clamping grooves 41 is multiple, so that more guide tubes 7 can be clamped simultaneously, more guide tubes 7 can be processed by one-time coating, and the production efficiency is higher. The fixture 4 is further provided with an installation groove 42, the installation groove 42 is communicated with the plurality of clamping grooves 41, and the installation groove 42 is used for installing the conduit 7; specifically, the width of the mounting groove 42 is larger than that of the locking groove 41, and the guide tube 7 can be inserted into the mounting groove 42 first and then locked in the locking groove 41. The clamping groove 41 and the mounting groove 42 are arranged, so that the clamp 4 is mounted at the opening while the guide pipe 7 is clamped, the sealing performance of the coating container 2 can be improved, and the volatilization amount of the liquid medicine when the guide pipe 7 is coated in the coating container 2 is reduced.
Preferably, the two sides of the clamp 4 are provided with handles 43 extending outwards; the handle 43 is provided to facilitate the worker in mounting and dismounting the jig 4 to and from the opening 22.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A medicated catheter applicator device comprising:
the medicine storage tank (1) is provided with a feed back port (11);
the coating container (2) is communicated with the medicine storage tank (1) through a coating pipeline (3), a discharge hole (21) communicated with the feed back hole (11) is formed in the coating container (2), and an opening (22) for inserting a guide pipe (7) is formed in the coating container (2); the feed back port (11) is formed in the upper end face of the medicine storage tank (1), the discharge port (21) is formed in the lower end face of the coating container (2), and the coating container (2) is located right above the medicine storage tank (1); the upper end surface of the medicine storage tank (1) and the lower end surface of the coating container (2) are both provided with through holes (12) for the coating pipeline (3) to pass through;
a clamp (4) mounted at the opening (22) for fixing the catheter (7);
the air pumping device (5) is communicated with the medicine storage tank (1) through a first air pipe (6) and can pump air into or pump air out of the medicine storage tank (1);
the air pumping device (5) comprises a power cylinder (51), an air storage cylinder (52), a connector (53) and an air supply device;
a first piston (511) in the power cylinder (51) divides the power cylinder (51) into a first cavity (512) and a second cavity (513), and the gas supply device is respectively communicated with the first cavity (512) and the second cavity (513) through a second gas pipe (55) and a third gas pipe (56);
the second piston (521) in the gas storage cylinder (52) divides the gas storage cylinder (52) into a third cavity (522) and a fourth cavity (523), the third cavity (522) is communicated with the gas supply device through a fourth gas pipe (57), and the fourth cavity (523) is communicated with the medicine storage tank (1) through the first gas pipe (6);
a first piston rod (514) is installed on the first piston (511), a second piston rod (524) is installed on the second piston (521), and the first piston rod (514) and the second piston rod (524) are connected through the connector (53).
2. The drug-containing catheter application device of claim 1, wherein the lower end of the application conduit (3) is close to the bottom surface of the drug reservoir (1) and the upper end of the application conduit (3) is close to the opening (22) of the application container (2).
3. The drug-containing catheter coating device according to claim 2, characterized in that the coating tube (3) in the coating container (2) is provided with a plurality of discharge holes (31) along its axial direction.
4. The drug-containing catheter application device of claim 1, wherein the volume ratio of the application container (2) to the drug reservoir (1) is 1: 1.2 to 1.6.
5. The drug-containing catheter coating device according to claim 1, wherein the volume ratio of the coating container (2) to the air cylinder (52) is 1: 1.2 to 1.5.
6. The drug-containing catheter coating device according to claim 1, wherein the air pumping device (5) further comprises an air path tube (58) communicating with the air supply device, and the second air tube (55) and the fourth air tube (57) are both communicated with the air path tube (58).
7. The drug-containing catheter application device of claim 1, wherein the pumping device (5) further comprises a stroke adjustment block (59) and a bracket (510), the bracket (510) being located between the power cylinder (51) and the reservoir cylinder (52), the stroke adjustment block (59) being removably mounted to the bracket (510), the stroke adjustment block (59) being configured to limit the distance the connector (53) travels from the power cylinder (51) to the reservoir cylinder (52).
8. The drug-containing catheter coating device according to claim 1, wherein the clamp (4) is provided with a clamping groove (41) for fixing the catheter (7); the fixture (4) is provided with a mounting groove (42), and the mounting groove (42) is communicated with the clamping grooves (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110365334.9A CN113058804B (en) | 2021-04-02 | 2021-04-02 | Medicine-containing catheter coating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110365334.9A CN113058804B (en) | 2021-04-02 | 2021-04-02 | Medicine-containing catheter coating device |
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| CN113058804B true CN113058804B (en) | 2022-04-01 |
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| CN113058804A (en) | 2021-07-02 |
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