Catheter coating fluid apparatus

Abstract

The application discloses a kind of conduit coating liquid device, including pump, liquid storage container and lower shell, the pump is installed on the liquid storage container;The pump has pressure chamber, the pressure chamber is divided into upper part and lower part, the top of the upper part is embedded with vertically slidable rubber part, and elastic member is also arranged between the rubber part and the upper part, the pump further includes pump group driving part for driving rubber part reciprocating, the lower part is provided with liquid guide groove, and the lower part is communicated with the upper part by the liquid guide groove.The central axis of the tube is perpendicular to the workbench during tube coating, effectively avoiding the factor of non-perpendicular human operation, the flow of liquid outlet can be adjusted in real time, the scraping cap or scraping rod can effectively ensure the solution amount difference of the inner and outer surface of the tube, the solution has pungent smell and is volatile, the scraping cap or scraping rod and cover effectively reduce the solution exposed area, effectively slow down the volatilization of the solution, and the depth of tube coating is uniform.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and specifically to a catheter coating device. Background Technology

[0002] A catheter is a tube placed inside the human body to deliver medical devices. In order to allow the medical devices to pass through the catheter more smoothly, the inner wall of the distal end of the catheter (the end away from the operator) usually needs to be coated with a lubricating coating. The effective component of the lubricating coating is mostly silicone oil, which can effectively reduce the friction between the medical device and the inner wall of the catheter.

[0003] Currently, due to the small diameter of the catheter, the lubricating coating on its inner wall is mainly applied manually by brushing. Operators use a cylindrical mandrel with an outer diameter smaller than the inner diameter of the catheter to dip into the coating solution, insert the mandrel into the catheter and make contact with the inner wall of the catheter, and then brush the coating solution onto the inner wall of the catheter. During brushing, operators need to pay attention to the position of the mandrel at all times to avoid exceeding the predetermined brushing range. The brushing process is time-consuming and slow. At the same time, manual brushing is also prone to uneven coating. Therefore, the existing method of brushing the lubricating coating on the inner wall of the catheter still has the problems of low efficiency and unreliability. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned above in the background art, and to provide a catheter coating device.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A catheter coating device includes a pump, a liquid storage container, and a lower housing, wherein the pump is mounted on the liquid storage container;

[0007] The pump includes a pressure chamber, which is divided into an upper part and a lower part. A vertically sliding rubber component is embedded in the top of the upper part. An elastic component is also provided between the rubber component and the upper part. The pump also includes a pump drive unit for driving the rubber component to reciprocate. A liquid guide groove is provided in the lower part, and the lower part is connected to the upper part through the liquid guide groove. An inlet ball valve and an outlet ball valve are provided in the liquid guide groove. A return pipe and an inlet pipe are also installed on the liquid storage container. The outlet ball valve is connected to the inlet pipe, and the inlet ball valve is connected to the return pipe. The liquid guide groove is also connected to the liquid storage container.

[0008] The lower shell has a downward-through-through inlet and a return outlet, the inlet being connected to the inlet pipe and the return outlet being connected to the return pipe;

[0009] The lower shell is equipped with an external coating mechanism or an internal coating mechanism. The pump delivers the coating liquid to the external coating mechanism or the internal coating mechanism through the inlet pipe, and the external coating mechanism or the internal coating mechanism applies the coating liquid to the conduit.

[0010] As a further aspect of the present invention: the external coating liquid mechanism includes a first liquid inlet, the first liquid inlet having a cross-shaped first liquid inlet channel, the top of the first liquid inlet having an annular groove, the center of the first liquid inlet having a first through hole for liquid drainage, the first liquid inlet being connected to the liquid inlet, the first liquid inlet being fitted with a first upper cover plate, the first upper cover plate being connected to the lower shell, and a reflux chamber being formed between the first upper cover plate and the lower shell.

[0011] As a further aspect of the present invention: the external coating liquid mechanism further includes a scraper cap, which is fitted onto the top of the first liquid inlet, and the top of the scraper cap has a conical opening.

[0012] As a further aspect of the present invention: the internal coating liquid mechanism includes a second liquid inlet and a scraper rod. The second liquid inlet has a vertically formed "+" shaped second through hole. The scraper rod is vertically inserted into the second through hole. A blind hole is formed at the bottom of the scraper rod. Holes are also formed on both sides of the scraper rod. The holes communicate with the blind holes. The second liquid inlet is connected to the liquid inlet.

[0013] As a further aspect of the present invention: the external coating mechanism further includes a second upper cover plate, the top of which has a conical opening, the second upper cover plate is sleeved on the second liquid inlet, the second upper cover plate is connected to the lower shell, and a reflux chamber is formed between the second upper cover plate and the lower shell.

[0014] As a further aspect of the present invention: the pump drive unit includes a pump motor and a pump pressure rod, the output end of the pump motor is connected to the pump pressure rod, and the pump pressure rod can press against and contact the highest point of the rubber part.

[0015] The beneficial effects of this invention are as follows: when the tube is coated with liquid, the central axis of the tube is perpendicular to the worktable, which effectively avoids the factor of non-perpendicularity caused by human operation; the flow rate of the liquid can be adjusted in real time; the scraper cap or scraper rod can effectively ensure the difference in solution volume between the inner and outer surfaces of the tube; the solution has a pungent odor and is easily volatile; the scraper cap or scraper rod and cover plate effectively reduce the exposed area of ​​the solution and effectively slow down the evaporation of the solution; and the depth of liquid coating on the tube is uniform. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0019] Figure 3This is a schematic diagram of the cross-section of the lower shell of the present invention;

[0020] Figure 4 This is a schematic diagram of the external coating liquid mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram of the internal coating liquid mechanism of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the second liquid inlet and the scraper bar of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the first through hole in this invention;

[0024] Figure 8 This is a schematic diagram of the connection between the internal coating liquid mechanism and the lower shell of the present invention;

[0025] Figure 9 This is a schematic diagram of the connection between the external coating liquid mechanism and the lower shell of the present invention.

[0026] In the diagram: 1. Pump; 101. Cable; 102. Filler port; 103. Pump pressure rod; 201. Return pipe; 202. Inlet pipe; 401. Pressure chamber; 402. Rubber component; 403. Elastic component; 404. Inlet ball valve; 405. Outlet ball valve; 510. Lower shell; 511. Inlet; 512. Return port; 513. Return chamber; 521. First upper cover plate; 522. First inlet component; 5221. First inlet channel; 5223. First through hole; 523. Scraper cap; 531. Second upper cover plate; 5311. Second inlet component; 5312. Scraper rod. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1, please refer to Figure 1-2 As shown, the present invention is a catheter coating device, including a pump 1, a liquid storage container and a lower shell 510, wherein the pump 1 is installed on the liquid storage container;

[0029] The pump 1 is equipped with a liquid inlet 102 on the top and a cable 101 on the pump 1, which supplies power to the pump 1.

[0030] The pump 1 includes a pressure chamber 401, which is divided into an upper part and a lower part. A vertically sliding rubber part 402 is embedded in the top of the upper part. An elastic part 403, which can be a spring, is also provided between the rubber part 402 and the upper part. The pump 1 also includes a pump drive unit for driving the rubber part 402 to reciprocate. A liquid guide groove is opened in the lower part, and the lower part is connected to the upper part through the liquid guide groove. An inlet ball valve 404 and an outlet ball valve 405 are provided in the liquid guide groove. A return pipe 201 and an inlet pipe 202 are also installed on the liquid storage container. The outlet ball valve 405 is connected to the inlet pipe 202, and the inlet ball valve 404 is connected to the return pipe 201. The liquid guide groove is also connected to the liquid storage container.

[0031] The lower shell 510 has a downward through-hole formed by an inlet 511 and a return port 512. The inlet 511 is connected to the inlet pipe 202, and the return port 512 is connected to the return pipe 201.

[0032] The lower shell 510 is equipped with an external coating mechanism or an internal coating mechanism. The pump 1 delivers the coating liquid to the external coating mechanism or the internal coating mechanism through the inlet pipe 202, and the external coating mechanism or the internal coating mechanism applies the coating liquid to the conduit.

[0033] Example 2, please refer to Figure 1-9 As shown, the present invention is a catheter coating device, including a pump 1, a liquid storage container and a lower shell 510, wherein the pump 1 is installed on the liquid storage container;

[0034] The pump 1 is equipped with a liquid inlet 102 on the top and a cable 101 on the pump 1, which supplies power to the pump 1.

[0035] The pump 1 includes a pressure chamber 401, which is divided into an upper part and a lower part. A vertically sliding rubber part 402 is embedded in the top of the upper part. An elastic part 403, which can be a spring, is also provided between the rubber part 402 and the upper part. The pump 1 also includes a pump drive unit for driving the rubber part 402 to reciprocate. A liquid guide groove is opened in the lower part, and the lower part is connected to the upper part through the liquid guide groove. An inlet ball valve 404 and an outlet ball valve 405 are provided in the liquid guide groove. A return pipe 201 and an inlet pipe 202 are also installed on the liquid storage container. The outlet ball valve 405 is connected to the inlet pipe 202, and the inlet ball valve 404 is connected to the return pipe 201. The liquid guide groove is also connected to the liquid storage container.

[0036] The lower shell 510 has a downward through-hole formed by an inlet 511 and a return port 512. The inlet 511 is connected to the inlet pipe 202, and the return port 512 is connected to the return pipe 201.

[0037] The lower shell 510 is equipped with an external coating mechanism or an internal coating mechanism. The pump 1 delivers the coating liquid to the external coating mechanism or the internal coating mechanism through the inlet pipe 202, and the external coating mechanism or the internal coating mechanism applies the coating liquid to the conduit.

[0038] The external coating liquid mechanism includes a first liquid inlet 522, which has a cross-shaped first liquid inlet channel 5221. The top of the first liquid inlet 522 has an annular groove, and the center of the first liquid inlet 522 has a first through hole 5223 for liquid drainage. The first liquid inlet 522 is connected to the liquid inlet 511. A first upper cover plate 521 is fitted on the first liquid inlet 522 and is connected to the lower shell 510. A reflux chamber 513 is formed between the first upper cover plate 521 and the lower shell 510. The external coating liquid mechanism also includes a scraper cap 523, which is fitted on the top of the first liquid inlet 522 and has a conical opening at the top.

[0039] Example 3, please refer to Figure 1-9 As shown, the present invention is a catheter coating device, including a pump 1, a liquid storage container and a lower shell 510, wherein the pump 1 is installed on the liquid storage container;

[0040] The pump 1 is equipped with a liquid inlet 102 on the top and a cable 101 on the pump 1, which supplies power to the pump 1.

[0041] The pump 1 includes a pressure chamber 401, which is divided into an upper part and a lower part. A vertically sliding rubber part 402 is embedded in the top of the upper part. An elastic part 403, which can be a spring, is also provided between the rubber part 402 and the upper part. The pump 1 also includes a pump drive unit for driving the rubber part 402 to reciprocate. A liquid guide groove is opened in the lower part, and the lower part is connected to the upper part through the liquid guide groove. An inlet ball valve 404 and an outlet ball valve 405 are provided in the liquid guide groove. A return pipe 201 and an inlet pipe 202 are also installed on the liquid storage container. The outlet ball valve 405 is connected to the inlet pipe 202, and the inlet ball valve 404 is connected to the return pipe 201. The liquid guide groove is also connected to the liquid storage container.

[0042] The lower shell 510 has a downward through-hole formed by an inlet 511 and a return port 512. The inlet 511 is connected to the inlet pipe 202, and the return port 512 is connected to the return pipe 201.

[0043] The lower shell 510 is equipped with an external coating mechanism or an internal coating mechanism. The pump 1 delivers the coating liquid to the external coating mechanism or the internal coating mechanism through the inlet pipe 202, and the external coating mechanism or the internal coating mechanism applies the coating liquid to the conduit.

[0044] The internal coating mechanism includes a second inlet 5311 and a scraper 5312. The second inlet 5311 has a vertically formed cross-shaped second through hole. The scraper 5312 is vertically inserted into the second through hole. The scraper 5312 has a blind hole at its bottom and through holes on both sides. The holes communicate with the blind holes. The second inlet 5311 is connected to the inlet 511. The external coating mechanism also includes a second upper cover 531. The top of the second upper cover 531 has a conical opening. The second upper cover 531 is fitted onto the second inlet 5311. The second upper cover 531 is connected to the lower shell 510. A reflux chamber 513 is formed between the second upper cover 531 and the lower shell 510.

[0045] In another embodiment, the pump drive includes a pump motor and a pump pressure rod 103. The output end of the pump motor is connected to the pump pressure rod 103, and the pump pressure rod 103 can press against the highest point of the rubber part 402.

[0046] The working principle of this invention is as follows:

[0047] When the pump motor rotates and touches the high position of the rubber component 402, the rubber component 402 will descend. At this time, the outlet ball valve 405 opens and the inlet ball valve 404 closes, so that when the pump motor rotates and touches the low position of the rubber component 402, the rubber component 402 rises under the action of the spring. At this time, the outlet ball valve 405 closes and the inlet ball valve 404 opens, thus achieving liquid storage.

[0048] Explanation of the principle of external coating of the conduit: First, the power supply of pump 1 is turned on. The pump motor in pump 1 starts to rotate the piston in pump 1 periodically, so that the solution in pump 1 flows out to the inlet pipe 202 under pressure. Under the action of the inlet pipe coating mechanism, the outer surface of the conduit is coated with liquid. The scraper cap 523 can effectively prevent the excessive solution on the outer surface of the conduit. The excess solution will flow through the return chamber 513 and back to the pump solution storage container through the return pipe 201.

[0049] Explanation of the principle of inner coating of the conduit: First, the power supply of pump 1 is turned on. The pump motor in pump 1 starts to rotate the piston in pump 1 periodically, so that the solution in pump 1 flows out to the inlet pipe 202 under pressure. Under the action of the outer coating mechanism, the inner surface of the conduit is coated with liquid. The scraper 5312 can effectively avoid the excessive solution on the inner surface of the conduit. The excess solution will flow through the return chamber 513 and back to the pump solution storage chamber through the return pipe 201.

[0050] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the scope of the claims.

Claims

1. A catheter coating device, characterized in that, It includes a pump (1), a liquid storage container and a lower shell (510), wherein the pump (1) is mounted on the liquid storage container; The pump (1) includes a pressure chamber (401), which is divided into an upper part and a lower part. A vertically sliding rubber part (402) is embedded in the top of the upper part. An elastic part (403) is also provided between the rubber part (402) and the upper part. The pump (1) also includes a pump drive unit for driving the rubber part (402) to reciprocate. A liquid guide groove is provided in the lower part. The lower part is connected to the upper part through the liquid guide groove. An inlet ball valve (404) and an outlet ball valve (405) are provided in the liquid guide groove. A return pipe (201) and an inlet pipe (202) are also installed on the liquid storage container. The outlet ball valve (405) is connected to the inlet pipe (202). The inlet ball valve (404) is connected to the return pipe (201). The liquid guide groove is also connected to the liquid storage container. The lower shell (510) has a downward through-hole formed by an inlet (511) and a return port (512). The inlet (511) is connected to the inlet pipe (202), and the return port (512) is connected to the return pipe (201). An external coating mechanism or an internal coating mechanism is installed on the lower shell (510). The pump (1) delivers the coating liquid to the external coating mechanism or the internal coating mechanism through the inlet pipe (202), and the external coating mechanism or the internal coating mechanism coats the conduit with the liquid. The external coating liquid mechanism includes a first liquid inlet (522), which has a cross-shaped first liquid inlet channel (5221) and an annular groove at the top. The first liquid inlet (522) has a first through hole (5223) for draining liquid at the center of its interior. The first liquid inlet (522) is connected to the liquid inlet (511). A first upper cover plate (521) is fitted on the first liquid inlet (522). The first upper cover plate (521) is connected to the lower shell (510). A reflux chamber (513) is formed between the first upper cover plate (521) and the lower shell (510). The external coating mechanism also includes a scraper cap (523), which is fitted on the top of the first liquid inlet (522), and the top of the scraper cap (523) has a conical opening; The internal coating liquid mechanism includes a second liquid inlet (5311) and a scraper (5312). The second liquid inlet (5311) has a vertically formed "+" shaped second through hole. The scraper (5312) is vertically inserted into the second through hole. The scraper (5312) has a blind hole at its bottom. The scraper (5312) also has through holes on both sides. The holes are connected to the blind holes. The second liquid inlet (5311) is connected to the liquid inlet (511). The external coating liquid mechanism also includes a second upper cover plate (531), the top of which has a conical opening. The second upper cover plate (531) is sleeved on the second liquid inlet (5311). The second upper cover plate (531) is connected to the lower shell (510), and a reflux chamber (513) is formed between the second upper cover plate (531) and the lower shell (510).

2. The catheter coating device according to claim 1, characterized in that, The pump drive unit includes a pump motor and a pump pressure rod (103). The output end of the pump motor is connected to the pump pressure rod (103). The pump pressure rod (103) can press against the highest point of the rubber part (402).

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