WO2020118539A1

WO2020118539A1 - Negative pressure suction device for surgery

Info

Publication number: WO2020118539A1
Application number: PCT/CN2018/120450
Authority: WO
Inventors: 王晶; 高红; 崔佰红
Original assignee: 王晶
Priority date: 2018-12-10
Filing date: 2018-12-12
Publication date: 2020-06-18
Also published as: CN109589460A; ZA202003570B

Abstract

A negative pressure suction device for surgery, comprising a bottom support portion (1), a liquid collecting device (2), and a negative pressure generating device (3); the liquid collecting device (2) is detachably installed at an upper portion of the bottom support portion (1), and the liquid collecting device (2) is provided in communication with the negative pressure generating device (3). The device may effectively prevent a liquid collecting bottle (9) from falling down and prevent liquid inside of the liquid collecting bottle (9) from flowing out, may effectively prevent the liquid inside of the liquid collecting bottle (9) from contaminating an operating room, thereby preventing the spread of iatrogenic viruses, and may effectively prevent a vacuum pump (44) from being damaged due to a liquid entering same, thereby ensuring the service life of the device; negative pressure is used to attract waste fluid generated during heart surgery on a patient so as to provide medical personnel with a clear operating field environment, thereby ensuring surgery is performed smoothly; moreover, the device may prevent diseased tissue of a patient from being scratched, which may effectively reduce the trauma caused by heart surgery on a patient; meanwhile, the device may prevent the noise from the vacuum pump (44) being too loud during operation, which may affect medical personnel performing surgery.

Description

Surgical negative pressure suction device

Technical field

The present invention relates to the technical field of medical devices, and more specifically, it relates to a surgical negative pressure suction device.

Background technique

The heart is one of the most important organs in the body of vertebrates. Its main function is to provide pressure for blood flow and to run blood to all parts of the body. The human heart is located on the lower left side of the middle of the chest cavity, the volume is about the size of a fist, and the weight is about 250 grams. Women’s hearts are usually smaller and lighter than men’s. The human heart is shaped like a peach, located above the diaphragm, between the lungs and to the left. Heart disease is one of the common diseases of human beings. Severe heart disease requires timely surgical treatment, otherwise it will be life-threatening.

During heart surgery, in order to obtain a clearer surgical field, the negative suction pump of the heart surgery is usually used. However, in the existing negative suction pump of heart surgery, the collection bottle is easy to tip, resulting in the outflow of the liquid inside the collection bottle and contamination In the operating room, for patients with infectious diseases, once the waste liquid generated during the operation contaminates the operating room, it is easy to cause the spread of iatrogenic viruses. The liquid in the collection bottle easily enters the interior of the vacuum pump, which is often The liquid is damaged, thereby seriously shortening the service life. The diseased tissue of the patient is often scratched due to the suction of the waste fluid generated during the operation, resulting in more trauma during the cardiac operation of the patient. At the same time, the noise of the vacuum pump is too large during the operation, which seriously affects the medical staff To perform surgery, a surgical negative pressure suction device is proposed for this purpose.

Summary of the invention

In view of the deficiencies in the prior art, the object of the present invention is to provide a surgical negative pressure suction device, which can effectively prevent the collection bottle from tipping, prevent the liquid inside the collection bottle from flowing out, and can effectively avoid the liquid pollution inside the collection bottle Operating room, to avoid the spread of iatrogenic viruses, the setting of the one-way valve can effectively prevent the liquid inside the collection bottle from flowing out through the first hose, and the setting of the overflow valve can effectively prevent the liquid inside the collection bottle from passing through the second soft The tube enters the inside of the vacuum pump, which can effectively prevent the vacuum pump from being damaged due to entering the liquid, thereby ensuring the service life of the device. The negative pressure is used to attract the waste liquid generated during the cardiac operation of the patient, providing a clear surgical field environment for medical staff to ensure the operation The smooth progress of the patient can prevent the patient's diseased tissue from being scratched, which can effectively reduce the trauma caused by the patient's heart surgery, and can prevent the vacuum pump from working too loudly and affecting the medical staff to perform the operation.

To achieve the above objectives, the present invention provides the following technical solutions:

A surgical negative pressure suction device includes a bottom support portion, a liquid collection device, and a negative pressure generation device. The liquid collection device is detachably mounted on the upper portion of the bottom support portion, and the liquid collection device and the negative pressure The connection setting of the generating device;

The bottom support portion includes a cylindrical base, and a cylindrical groove is provided on an upper portion of the cylindrical base, and three first rubber feet are installed at the bottom of the cylindrical base at an equal angle with the center of the bottom as a center;

The liquid collecting device includes a liquid collecting bottle detachably installed inside the cylindrical groove, an end cap is screwed on an upper end of the liquid collecting bottle, and an upper part of the end cap communicates with a first connecting pipe and a Two connecting pipes, and a check valve communicating with the bottom end of the first connecting pipe and an anti-overflow valve communicating with the bottom end of the second connecting pipe are fixedly installed at the bottom of the end cover, the first A first valve is provided in the middle of the connecting pipe, and a first plug interface is provided at the upper end of the first connecting pipe, a second valve is provided in the middle of the second connecting pipe, and an upper end of the second connecting pipe A second plug interface is provided for communication, and a first hose is plugged outside the first plug interface;

The negative pressure generating device includes a casing, and suction pipes and outlet pipes are symmetrically installed on both side walls of the casing, and a vacuum pump is fixedly installed on the inner bottom of the casing, and the suction port of the vacuum pump and the One end of the suction pipe communicates with each other, and the air outlet of the vacuum pump communicates with one end of the outlet pipe, and the other end of the suction pipe communicates with the second socket through a second hose The third plug interface, the upper part of the housing is also fixedly installed with a vacuum pressure gauge communicating with the suction pipe.

By adopting the above technical solution, the bottom support part supports the liquid collection bottle, which can effectively prevent the liquid collection bottle from tipping and prevent the liquid inside the liquid collection bottle from flowing out. The liquid collection device is used to collect the waste liquid generated during the cardiac operation of the patient. The setting of the valve can effectively prevent the liquid inside the collecting bottle from flowing out through the first hose, and the setting of the anti-overflow valve can effectively prevent the liquid inside the collecting bottle from entering the inside of the vacuum pump through the second hose, which can effectively prevent the vacuum pump from entering the liquid If it is damaged, the negative pressure generating device is used to suck out the air inside the liquid collection bottle, so that the air pressure inside the liquid collection bottle is lower than its external air pressure to generate a negative pressure, and then the negative pressure is used to attract the waste liquid generated during cardiac surgery of the patient.

Further, the anti-overflow valve includes a hollow valve body fixedly installed at the bottom of the end cover, and a third connection that communicates with an upper end and a bottom end of the second connection pipe is installed on the top wall of the hollow valve body And a first air inlet hole is provided on the side wall of the hollow valve body, a rubber valve core is movably arranged at the inner bottom of the hollow valve body, and a support rod is fixedly connected to the bottom of the rubber valve core The bottom end of the support rod extends through the bottom wall of the hollow valve body to the bottom of the hollow valve body. A floating ball is connected to the outside of the bottom.

By adopting the above technical solution, when the liquid level in the liquid collection bottle is too high, the floating ball rises under the action of the buoyancy of the liquid, and the floating ball drives the support rod to rise at the same time, and the support rod drives the rubber valve core to rise and then The bottom end of the third connecting tube is blocked, so that the liquid in the liquid collection bottle can be prevented from entering the inside of the vacuum pump through the second hose, and the vacuum pump can be effectively prevented from being damaged by entering the liquid.

Further, the liquid collection bottle is made of transparent plastic, and a scale line is provided on the outer surface of the liquid collection bottle.

By adopting the above technical solution, it is convenient to directly observe the inside of the liquid collection bottle because it is convenient to process the liquid collection bottle in time, and it is easy to understand the amount of waste liquid generated by the patient during cardiac surgery through the tick mark.

Further, a protection head is inserted into the end of the first hose away from the first socket, and the protection head includes an end inserted into the first hose away from the first socket A plug-in tube inside the end and an arc-shaped silicone ferrule exposed outside the first hose, the plug-in tube and the arc-shaped silicone ferrule are integrally provided.

By adopting the above technical solution, when the device is used to attract the waste liquid generated during the operation, the arc-shaped silicone ferrule can directly contact the diseased tissue of the patient, and the end of the first hose can be prevented from directly contacting the diseased tissue of the patient In order to avoid scratching the diseased tissue of the patient, it can effectively reduce the trauma generated during the cardiac operation of the patient. The setting of the insertion tube is convenient for the protective head to be installed on the protective head.

Further, the housing is a square housing, and four second rubber feet are symmetrically provided at the corners of the bottom of the housing, and a control switch is also provided at the front of the housing. The control switch is connected to the vacuum pump through a wire Electrical connection.

By adopting the above technical solution, the four second rubber feet have a better supporting effect on the housing, and at the same time have the effect of anti-skid and shock absorption, the control switch is used to control the vacuum pump to work.

Further, a safety valve is connected and installed on the suction pipe at a position outside the housing, the safety valve includes a cylindrical barrel, the upper end of the cylindrical barrel is a closed end, and the cylindrical The bottom end of the cylinder body has an opening structure, and a second air inlet hole is centrally formed on the closed end wall of the cylindrical cylinder body, and the opening end of the cylindrical cylinder body is integrally provided with a first threaded portion, the cylinder The cylindrical barrel is fixedly installed on the upper surface of the suction pipe through the first threaded portion, and a baffle is fixedly installed at a position near the opening end of the cylindrical barrel, and the interior of the baffle A plurality of through holes are evenly provided, and the upper part of the baffle is fixedly installed with an arc-shaped rubber top core through a spring, and the arc surface of the arc-shaped rubber top core interferes with the second air inlet hole.

By adopting the above technical solution, when the anti-overflow valve inside the collection bottle is closed, under the action of the vacuum pump, the arc surface of the arc-shaped rubber top core will be separated from the second air inlet hole, and then the outside air will pass through the second The air intake hole and the through hole enter the interior of the vacuum pump, which can effectively prevent damage due to the overload of the vacuum pump, thereby ensuring the service life of the vacuum pump.

Further, a filter device is further provided on the second hose between the second plug interface and the third plug interface, the filter device includes a box body, and the two sides of the box body are symmetrically connected A fourth plug interface and a fifth plug interface both plugged inside the second hose are provided, and a stainless steel wire filter screen is fixedly installed in the center of the box body.

By adopting the above technical solution, during the operation of the vacuum pump, the stainless steel wire filter screen filters the gas passing through the second hose, which can prevent the dust and other foreign objects inside the collection bottle from directly entering the interior of the vacuum pump through the second hose. To prevent foreign matter from entering inside the vacuum pump, the settings of the fourth and fifth sockets are convenient for installing the filter device on the second hose,

Further, a cover plate is also installed on one side wall of the box body by screws, and a rubber sealing gasket is also provided between the cover plate and the side wall of the box body.

By adopting the above technical solution, the rubber sealing gasket plays a sealing role, which can prevent air leakage between the cover plate and the side wall of the box body. The cover plate is installed by screws, which makes it easy to remove the cover plate and clean the stainless steel wire filter mesh later.

Further, a muffler device is fixedly installed at the other end of the air outlet pipe, and the muffler device includes a cylindrical shell, and a second threaded portion is integrally connected to one end wall of the cylindrical shell, and the A plurality of exhaust holes are evenly formed on one end wall of the cylindrical shell, the cylindrical shell is fixedly installed on the other end of the air outlet pipe through the second threaded portion, and the cylindrical shell A cylindrical hollow plate body with a plurality of round holes uniformly opened on the side wall is fixedly installed in the center.

By adopting the above technical solution, the gas discharged from the vacuum pump can be dispersed into the inside of the cylindrical hollow plate body through the circular hole to change the sound frequency of the air flow, thereby achieving the purpose of noise reduction, which can prevent the vacuum pump from working too loudly and affecting the medical staff. surgery.

Further, the surface of the shell is also provided with an anti-corrosion layer, and the anti-corrosion layer is prepared by the following method:

Weigh the following raw materials in parts by weight: acrylic resin 35-45 parts, calcium carbonate 12-18 parts, p-toluenesulfonic acid powder 15-20 parts, mica powder 6-10 parts, phenolic resin 18-26 parts, glycerin 3- 5 parts, 12-12 parts of alcohol ester, 1-3 parts of ferric chloride solution and 40-60 parts of water;

S1. Add the weighed glycerin, ferric chloride solution, alcohol ester twelve, and water to the blender and stir for 20-30min at a stirring speed of 600-800r/min to prepare a mixed solution;

S2. Add acrylic resin, calcium carbonate, p-toluenesulfonic acid powder, mica powder and phenolic resin to the ball mill for fine grinding until the particle diameter is not more than 40um, to prepare a mixed powder material;

S3. Add the mixed powder material prepared in step S2 to the mixed solution prepared in step S1, and continue to stir for 30-40min with a stirrer, the stirring speed is set to 700-900r/min, the temperature is set to 80-90℃, Obtain anti-corrosion coating;

S4. Put the shell into the ultrasonic cleaning machine for cleaning, the frequency of the ultrasonic cleaning machine is set to 40-60KHz, the temperature is set to 50-60℃, and the cleaning is 12-16min;

S5. The shell cleaned in step S4 is dried with a hot air blower, and then the anticorrosive paint prepared in step S3 is evenly sprayed on the surface of the dried shell by using a high-pressure sprayer spray gun;

S6. Put the shell 35 sprayed with anti-corrosion paint in step S5 in a drying room for drying. The drying temperature is set at 100-120° C. and the time is set at 20-30 min, that is, the anti-corrosion layer is prepared on the surface of the shell.

By adopting the above technical scheme, the prepared anti-corrosion coating has a moderate viscosity, is not easy to delaminate, and no foam is generated, which is convenient for spraying, and the components are fully combined, and the comprehensive performance is good, so that the anti-corrosion coating can form a smooth, smooth, and uniform after spraying The coating film is not easy to crack, the prepared anti-corrosion layer has good anti-corrosion and anti-aging performance, good adhesion, not easy to fall off, can effectively protect the surface of the shell from corrosion, thereby increasing the service life of the device.

In summary, the present invention mainly has the following beneficial effects:

1. According to the present invention, the bottom supporting portion supports the liquid collection bottle, which can effectively prevent the liquid collection bottle from toppling, prevent the liquid inside the liquid collection bottle from flowing out, and effectively prevent the liquid inside the liquid collection bottle from contaminating the operating room, thereby avoiding iatrogenicity Spread of the virus;

2. In the present invention, the liquid collecting device is used to collect the waste liquid generated during the cardiac operation of the patient. The setting of the one-way valve can effectively prevent the liquid inside the liquid collecting bottle from flowing out through the first hose, and the setting of the overflow prevention valve can effectively prevent the collecting The liquid inside the liquid bottle enters the inside of the vacuum pump through the second hose, which can effectively prevent the vacuum pump from being damaged due to entering the liquid, thereby ensuring the service life of the device;

3. In the present invention, the negative pressure generating device is used to suck out the air in the liquid collection bottle, so that the air pressure inside the liquid collection bottle is lower than its external air pressure to generate negative pressure, and then use the negative pressure to attract the waste generated during the heart operation of the patient Liquid to provide a clear surgical field environment for medical staff to ensure the smooth operation of the operation;

4. In the present invention, when the liquid level inside the liquid collection bottle is too high, the floating ball rises under the action of the buoyancy of the liquid, and the floating ball drives the support rod to rise at the same time as it rises, and the support rod drives the rubber valve core to rise and then the first The bottom end of the three connecting tubes is blocked, so that the liquid in the collection bottle can be prevented from entering the inside of the vacuum pump through the second hose, which can effectively prevent the vacuum pump from being damaged by entering the liquid;

5. In the present invention, when the device is used to attract the waste liquid generated during the operation, the arc-shaped silicone ferrule can directly contact the diseased tissue of the patient, and the end of the first hose can be prevented from directly contacting the diseased tissue of the patient. In order to avoid the patient's diseased tissue from being scratched, it can effectively reduce the trauma produced by the patient during cardiac surgery;

6. In the present invention, when the anti-overflow valve inside the liquid collection bottle is closed, the arc surface of the arc-shaped rubber top core and the second air inlet hole will be separated under the action of the vacuum pump, and then the outside air will pass through the second inlet in turn The air hole and the through hole enter the interior of the vacuum pump, which can effectively prevent the damage caused by the overload of the vacuum pump, thereby ensuring the service life of the vacuum pump;

7. In the present invention, during the operation of the vacuum pump, the stainless steel wire filter screen filters the gas passing through the second hose, which can prevent the dust and other foreign objects inside the collection bottle from directly entering the interior of the vacuum pump through the second hose, which can be avoided Foreign matter enters inside the vacuum pump;

8. According to the present invention, the gas discharged from the vacuum pump can be dispersed into the interior of the cylindrical hollow plate through the circular hole to change the sound frequency of the air flow, thereby achieving the purpose of noise reduction, which can prevent the vacuum pump from working too loudly and affecting the medical staff to perform the operation ;

9. In the present invention, the prepared anti-corrosion coating has a moderate viscosity, is not easy to be layered, and no foam is generated, which is convenient for spraying, and the components are fully combined, and the comprehensive performance is good, so that the anti-corrosion coating can form a smooth, smooth, and even coating after spraying. The film is not easy to crack, the prepared anti-corrosion layer has good anti-corrosion and anti-aging performance, good adhesion, not easy to fall off, it can effectively protect the surface of the shell from corrosion, thereby increasing the service life of the device, it is worth promoting and universal.

BRIEF DESCRIPTION

1 is a schematic structural diagram of an embodiment of the present invention;

2 is a schematic structural diagram of a liquid collecting device according to an embodiment of the present invention;

3 is a schematic structural diagram of an anti-overflow valve according to an embodiment of the present invention;

4 is a schematic structural diagram of a filtering device according to an embodiment of the present invention;

5 is a schematic structural diagram of a protective head according to an embodiment of the present invention;

6 is a schematic structural diagram of a negative pressure generating device according to an embodiment of the present invention;

7 is a schematic cross-sectional structural view of a negative pressure generating device according to an embodiment of the present invention;

8 is a schematic structural diagram of a bottom support portion according to an embodiment of the present invention;

9 is a schematic diagram of the structure of a muffler device according to an embodiment of the present invention;

10 is a schematic structural diagram of a safety valve according to an embodiment of the present invention.

In the picture: 1. bottom support; 2. liquid collecting device; 3. negative pressure generating device; 4. filtering device; 5. first hose; 6. second hose; 7. protective head; 8. cover plate 9. Liquid collection bottle; 10. End cap; 11. First connection tube; 12. First plug interface; 13. First valve; 14. One-way valve; 15. Second connection tube; 16. Second plug Interface; 17, second valve; 18, anti-overflow valve; 19, scale line; 20, third connecting tube; 21, first air inlet; 22, rubber spool; 23, support rod; 24, float ball; 25. Hollow valve body; 26. Box body; 27. Stainless steel wire filter; 28. Fourth plug interface; 29. Fifth plug interface; 30. Plug-in tube; 31. Arc-shaped silicone ferrule; 32. Cylindrical base ; 33, cylindrical groove; 34, first rubber foot; 35, housing; 36, vacuum pressure gauge; 37, suction pipe; 38, third socket; 39, safety valve; 40, outlet pipe; 41, Silencer; 42, second rubber feet; 43, control switch; 44, vacuum pump; 45, cylindrical housing; 46, second threaded portion; 47, cylindrical hollow plate; 48, exhaust hole; 49, Cylindrical cylinder; 50, baffle; 51, first threaded portion; 52, through hole; 53, spring; 54, second air inlet hole; 55, curved rubber top core.

detailed description

Example 1

The present invention will be further described in detail below with reference to FIGS. 1-10.

A surgical negative pressure suction device, as shown in FIGS. 1-10, includes a bottom support portion 1 and a liquid collection device 2 and a negative pressure generating device 3, and the liquid collection device 2 is detachably mounted on the bottom support portion 1 The upper part, and the liquid collecting device 2 is connected to the negative pressure generating device 3;

The bottom support portion 1 includes a cylindrical base 32, and a cylindrical groove 33 is formed on the upper portion of the cylindrical base 32, and the bottom of the cylindrical base 32 is installed at three equal angles with the center of the bottom as the center of the circle. A rubber foot 34;

The liquid collecting device 2 includes a liquid collecting bottle 9 detachably installed inside the cylindrical groove 33, an upper end of the liquid collecting bottle 9 is screwed with an end cover 10, and an upper portion of the end cover 10 communicates with The first connecting pipe 11 and the second connecting pipe 15, and the bottom of the end cover 10 is fixedly installed with a check valve 14 communicating with the bottom end of the first connecting pipe 11 and the bottom of the second connecting pipe 15 An anti-overflow valve 18 connected at both ends, a first valve 13 is provided in the middle of the first connection pipe 11, and a first insertion port 12 is provided at the upper end of the first connection pipe 11, and the second connection pipe 15 is provided with a second valve 17 in the middle, and a second socket 16 is connected to the upper end of the second connection pipe 15, and a first hose 5 is inserted outside the first socket 12;

The negative pressure generating device 3 includes a housing 35, on both side walls of which a suction tube 37 and an air outlet tube 40 are symmetrically installed, and a vacuum pump 44 is fixedly installed on the inner bottom of the housing 35, the vacuum pump The suction port of 44 is connected to one end of the suction pipe 37, and the outlet of the vacuum pump 44 is connected to one end of the outlet pipe 40, and the other end of the suction pipe 37 is connected to The second hose 6 communicates with the third socket 38 of the second socket 16, and a vacuum pressure gauge 36 communicating with the suction pipe 37 is fixedly installed on the upper portion of the housing 35.

By adopting the above technical solution, the bottom support portion 1 supports the liquid collection bottle 9, which can effectively prevent the liquid collection bottle 9 from tipping and prevent the liquid inside the liquid collection bottle 9 from flowing out. The liquid collection device 2 is used to collect For waste liquid, the setting of the check valve 14 can effectively prevent the liquid inside the collecting bottle 9 from flowing out through the first hose 5, and the setting of the overflow prevention valve 18 can effectively prevent the liquid inside the collecting bottle 9 from entering through the second hose 6. The inside of the vacuum pump 44 can effectively prevent the vacuum pump 44 from being damaged by entering the liquid. The negative pressure generating device 3 is used to suck out the air inside the liquid collection bottle 9 so that the air pressure inside the liquid collection bottle 9 is lower than its external air pressure to generate a negative pressure In order to use negative pressure to attract the waste liquid generated during cardiac surgery of the patient.

Preferably, the anti-overflow valve 18 includes a hollow valve body 25 fixedly installed at the bottom of the end cover 10, and an upper end of the hollow valve body 25 communicates with an upper end and a bottom end of the second connecting pipe 15 A third connecting pipe 20 communicating with each other, and a first air inlet hole 21 is provided on the side wall of the hollow valve body 25, a rubber valve core 22 is provided on the inner bottom of the hollow valve body 25, and the rubber valve A support rod 23 is fixedly connected to the bottom of the core 22. The bottom end of the support rod 23 extends through the bottom wall of the hollow valve body 25 to the outside of the bottom of the hollow valve body 25 to which a float 24 is connected. When the liquid level inside the liquid collection bottle 9 is too high, the float 24 rises under the action of the buoyancy of the liquid, and the float 24 drives the support rod 23 to rise at the same time, and the support rod 23 drives the rubber spool 22 to rise and then The bottom end of the third connecting tube 20 is blocked, so that the liquid inside the collecting bottle 9 can be prevented from entering the inside of the vacuum pump 44 through the second hose 6, and the vacuum pump 44 can be effectively prevented from being damaged due to the entering liquid.

Preferably, the liquid collection bottle 9 is made of transparent plastic, and a scale line 19 is provided on the outer surface of the liquid collection bottle 9. It is convenient to directly observe the inside of the liquid collection bottle 9 because it is convenient to handle the liquid collection bottle 9 in time, and the tick mark 19 is convenient for understanding the amount of waste liquid generated by the patient during cardiac surgery.

Preferably, a protective head 7 is inserted into an end of the first hose 5 away from the first insertion port 12, and the protective head 7 includes a plug connected to the first hose 5 away from the A plug tube 30 inside one end of the first socket 12 and an arc-shaped silicone ferrule 31 exposed outside the first hose 5 are provided integrally with the arc-shaped silicone ferrule 31. When using the device to attract waste fluid generated during surgery, the curved silicone ferrule 31 can directly contact the diseased tissue of the patient, which can avoid the end of the first hose 5 directly contacting the diseased tissue of the patient, thereby avoiding the patient The diseased tissue is scratched, which can effectively reduce the trauma generated by the patient during cardiac surgery. The installation of the insertion tube 30 facilitates the installation of the protective head 7 on the protective head 7.

Preferably, the housing 35 is a square housing, and four second rubber feet 42 are symmetrically provided at the bottom corners of the housing 35, and a control switch 43 is further provided at the front of the housing 35. The control switch 43 is electrically connected to the vacuum pump 44 through a wire. The four second rubber feet 42 have a better supporting effect on the housing 35 and at the same time have the effect of anti-skid and shock absorption. The control switch 43 is used to control the vacuum pump 44 to work.

Preferably, a safety valve 39 is connected and installed on the suction pipe 37 at a position outside the casing 35, the safety valve 39 includes a cylindrical barrel 49, and the upper end of the cylindrical barrel 49 is closed And the bottom end of the cylindrical barrel 49 is an open structure, the closed end wall of the cylindrical barrel 49 is centrally provided with a second air inlet hole 54 and the open end of the cylindrical barrel 49 A first threaded portion 51 is integrally provided, the cylindrical barrel 49 is fixedly mounted on the upper surface of the suction pipe 37 through the first threaded portion 51, and the inside of the cylindrical barrel 49 is close to it A baffle 50 is fixedly installed at the position of the open end, and a plurality of through holes 52 are evenly opened inside the baffle 50, and an upper part of the baffle 50 is fixedly installed with an arc-shaped rubber top core 55 by a spring 53, the arc The curved surface of the rubber-shaped top core 55 interferes with the second air inlet 54. When the overflow prevention valve 18 inside the liquid collection bottle 9 is closed, the arc surface of the arc-shaped rubber core 55 and the second air inlet hole 54 will be separated under the action of the vacuum pump 44, and then the outside air will pass through the second inlet in turn The air hole 54 and the through hole 52 enter the inside of the vacuum pump 44, which can effectively prevent the damage caused by the overload of the vacuum pump 44, thereby ensuring the service life of the vacuum pump 44.

Preferably, the second hose 6 is further provided with a filtering device 4 between the second plug port 16 and the third plug port 38, the filter device 4 includes a box body 26, the box The two sides of the body 26 are symmetrically connected with a fourth socket 28 and a fifth socket 29 that are both plugged into the inside of the second hose 6, and a stainless steel wire filter is fixedly installed in the center of the box 26 Net 27. During the operation of the vacuum pump 44, the stainless steel wire filter 27 filters the gas passing through the second hose 6, which can prevent the dust and other foreign substances inside the collection bottle 9 from directly entering the interior of the vacuum pump 44 through the second hose 6. To prevent foreign matter from entering the inside of the vacuum pump 44, the arrangement of the fourth socket 28 and the fifth socket 29 facilitates the installation of the filter device 4 on the second hose 6,

Preferably, a cover plate 8 is also installed on one side wall of the box body 26 by screws, and a rubber sealing gasket is further provided between the cover plate 8 and the side wall of the box body 26. The rubber sealing gasket plays a sealing role, which can prevent air leakage between the cover plate 8 and the side wall of the box body 26. The cover plate 8 is installed by screws, so that it is convenient to remove the cover plate 8 later to clean the stainless steel wire filter 27.

Preferably, a muffler device 41 is fixedly installed at the other end of the air outlet tube 40, and the muffler device 41 includes a cylindrical housing 45, and one end of the cylindrical housing 45 communicates and is integrally provided with a second A screw portion 46 is provided, and a plurality of exhaust holes 48 are evenly formed on one end wall of the cylindrical housing 45, and the cylindrical housing 45 is fixedly installed on the air outlet pipe 40 through the second thread portion 46 At one end, and inside the cylindrical housing 45, a cylindrical hollow plate 47 with a plurality of round holes uniformly opened on the side wall is fixedly installed in the center. The gas discharged from the vacuum pump 44 can be dispersed into the inside of the cylindrical hollow plate body 47 through the circular hole to change the sound frequency of the airflow, thereby achieving the purpose of noise reduction, which can prevent the vacuum pump 44 from working too loud and affecting the medical staff to perform the operation.

Example 2

The difference from Embodiment 1 is that the surface of the housing 35 is further provided with an anti-corrosion layer, which is prepared by the following method:

Weigh the following raw materials in parts by weight: 35 parts of acrylic resin, 12 parts of calcium carbonate, 15 parts of p-toluenesulfonic acid powder, 6 parts of mica powder, 18 parts of phenolic resin, 3 parts of glycerin, 12 parts of alcohol ester, trichloro 1 part iron solution and 40 parts water;

S1, add the weighed glycerin, ferric chloride solution, alcohol ester twelve and water into the mixer for stirring for 20min at a stirring speed of 600r/min to prepare a mixed solution;

S2. Add acrylic resin, calcium carbonate, p-toluenesulfonic acid powder, mica powder and phenolic resin to the ball mill for fine grinding until the particle diameter is not more than 40um, to prepare mixed powder materials;

S3. Add the mixed powder material prepared in step S2 to the mixed solution prepared in step S1, and continue to stir for 30 minutes using a stirrer, the stirring speed is set to 700r/min, and the temperature is set to 80°C to prepare anticorrosive paint;

S4. Put the casing 35 into the ultrasonic cleaning machine for cleaning. The frequency of the ultrasonic cleaning machine is set to 40KHz, the temperature is set to 50°C, and the cleaning is performed for 12 minutes;

S5. The casing 35 cleaned in step S4 is dried with a hot air blower, and then the anticorrosive paint prepared in step S3 is evenly sprayed on the surface of the dried casing 35 using a high-pressure sprayer spray gun;

S6. Put the casing 35 sprayed with anti-corrosion paint in step S5 in a drying room for drying. The drying temperature is set to 100° C. and the time is set to 20 min, that is, the anti-corrosion layer is prepared on the surface of the casing 35.

Example 3

The difference from Example 2 is the preparation of the anticorrosive layer, and the specific preparation method is as follows:

Weigh the following raw materials in parts by weight: 40 parts of acrylic resin, 16 parts of calcium carbonate, 18 parts of p-toluenesulfonic acid powder, 8 parts of mica powder, 22 parts of phenolic resin, 4 parts of glycerin, 10 parts of alcohol ester, trichloromethane 2 parts of iron solution and 50 parts of water;

S1. Add the weighed glycerin, ferric chloride solution, alcohol ester twelve, and water to the blender and stir for 25 min at a stirring speed of 700 r/min to prepare a mixed solution;

S3. Add the mixed powder material prepared in step S2 to the mixed solution prepared in step S1, and continue to stir for 35 minutes using a mixer, the stirring speed is set to 800r/min, and the temperature is set to 85°C to prepare anticorrosive paint;

S4. Put the casing 35 into the ultrasonic cleaning machine for cleaning. The frequency of the ultrasonic cleaning machine is set to 50KHz, the temperature is set to 55℃, and the cleaning is for 14 minutes;

S6. Put the shell 35 sprayed with anti-corrosion paint in step S5 in a drying room for drying. The drying temperature is set to 110° C. and the time is set to 25 min, that is, the anti-corrosion layer is prepared on the surface of the shell 35.

Example 4

Weigh the following raw materials in parts by weight: 45 parts of acrylic resin, 18 parts of calcium carbonate, 20 parts of p-toluenesulfonic acid powder, 10 parts of mica powder, 26 parts of phenolic resin, 5 parts of glycerin, 12 parts of alcohol ester, trichloromethane 3 parts of iron solution and 60 parts of water;

S1. Add the weighed glycerin, ferric chloride solution, alcohol ester twelve, and water to the blender and stir for 30 min at a stirring speed of 800 r/min to prepare a mixed solution;

S3. Add the mixed powder material prepared in step S2 to the mixed solution prepared in step S1, and continue to stir for 40 minutes using a stirrer, the stirring speed is set to 900r/min, and the temperature is set to 90°C to prepare an anticorrosive coating;

S4. Put the casing 35 into the ultrasonic cleaning machine for cleaning. The frequency of the ultrasonic cleaning machine is set to 60KHz, the temperature is set to 60°C, and the cleaning is performed for 16 minutes;

S6. Put the casing 35 sprayed with anti-corrosion paint in step S5 in a drying room for drying. The drying temperature is set to 120° C. and the time is set to 30 min, that is, the anti-corrosion layer is prepared on the surface of the casing 35.

The shell 35 in Example 1-4 was subjected to the salt spray test under the same conditions in the laboratory. The comparison results are as follows:

	测试300后的结果Results after test 300
实施例1Example 1	外壳35的表面在40h时出现明显腐蚀迹象The surface of the housing 35 shows obvious signs of corrosion at 40h
实施例2Example 2	外壳35的表面在290h时出现轻微腐蚀迹象The surface of the housing 35 showed slight signs of corrosion at 290h
实施例3Example 3	外壳35的表面在288h时出现轻微腐蚀迹象The surface of the housing 35 showed slight signs of corrosion at 288h
实施例4Example 4	外壳35的表面在300h后未出现轻微腐蚀迹象The surface of the housing 35 showed no signs of slight corrosion after 300h

From the comparative analysis of the test results in the above table, it can be seen that Example 4 is the best example. By adopting the above technical scheme, the prepared anticorrosive paint has a moderate viscosity, is not easy to delaminate, and no foam is generated. It is convenient for spraying, and the various components are fully combined. Good, so that the anti-corrosion coating can form a smooth, smooth and uniform coating after spraying, which is not easy to crack. The prepared anti-corrosion layer has good anti-corrosion and anti-aging properties, good adhesion, not easy to fall off, and can be effectively protected The surface of the housing 35 is not corroded, thereby increasing the service life of the device.

Working principle: The negative pressure suction device of the heart operation supports the liquid collection bottle 9 at the bottom support portion 1, which can effectively prevent the liquid collection bottle 9 from tipping, prevent the liquid inside the liquid collection bottle 9 from flowing out, and can effectively avoid the inside of the liquid collection bottle 9 The liquid in the operating room contaminates the operating room, thereby avoiding the spread of iatrogenic viruses; the liquid collection device 2 is used to collect the waste liquid generated during the cardiac operation of the patient. The setting of the check valve 14 can effectively prevent the liquid inside the liquid collection bottle 9 from passing through the first soft The tube 5 flows out, and the anti-overflow valve 18 can effectively prevent the liquid inside the collection bottle 9 from entering the vacuum pump 44 through the second hose 6, and can effectively prevent the vacuum pump 44 from being damaged due to entering the liquid, thereby ensuring the service life of the device ; The negative pressure generating device 3 is used to suck the air inside the liquid collection bottle 9 so that the air pressure inside the liquid collection bottle 9 is lower than its external air pressure to generate a negative pressure, and then the negative pressure is used to attract the waste liquid generated during heart surgery of the patient , To provide medical staff with a clear field environment, so as to ensure the smooth operation of the operation; when the liquid level inside the collection bottle 9 is too high, the float 24 rises under the action of the buoyancy of the liquid, and the float 24 rises At the same time, the support rod 23 is raised, and the support rod 23 drives the rubber spool 22 to rise to block the bottom end nozzle of the third connecting tube 20, thereby preventing the liquid inside the collection bottle 9 from entering the vacuum pump 44 through the second hose 6 The inside of the can effectively prevent the vacuum pump 44 from being damaged by entering the liquid; when the device is used to attract the waste liquid generated during the operation, the curved silicone ferrule 31 can directly contact the patient's diseased tissue, which can avoid the first hose 5 The end is in direct contact with the patient's diseased tissue, thereby avoiding the patient's diseased tissue from being scratched, which can effectively reduce the trauma caused by the patient's cardiac surgery; when the anti-overflow valve 18 inside the collection bottle 9 is closed, the vacuum pump 44 Under the action, the arc surface of the arc-shaped rubber top core 55 and the second air inlet hole 54 will be separated. At this time, outside air will enter the interior of the vacuum pump 44 through the second air inlet hole 54 and the through hole 52 in sequence, which can effectively prevent the vacuum pump 44 is damaged due to overload, so that the service life of the vacuum pump 44 can be guaranteed; during the operation of the vacuum pump 44, the stainless steel wire filter 27 filters the gas passing through the second hose 6, which can prevent the dust inside the collection bottle 9 etc. Foreign matter directly enters the inside of the vacuum pump 44 through the second hose 6 to prevent the inside of the vacuum pump 44 from entering the foreign matter; the gas discharged from the vacuum pump 44 can be dispersed through the circular hole to enter the inside of the cylindrical hollow plate 47 to change the sound frequency of the airflow, Furthermore, the purpose of noise reduction can be achieved, which can prevent the vacuum pump 44 from being too noisy during operation, which may affect the operation of medical personnel.

This specific embodiment is merely an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications without creative contribution to this embodiment after reading this specification, as long as they have rights in the present invention Within the scope of the requirements are protected by patent law.

Claims

A surgical negative pressure suction device, characterized by comprising a bottom support part (1), a liquid collecting device (2) and a negative pressure generating device (3), the liquid collecting device (2) is detachably mounted on the bottom An upper part of the supporting part (1), and the liquid collecting device (2) is connected to the negative pressure generating device (3);

The bottom support portion (1) includes a cylindrical base (32), a cylindrical groove (33) is opened at an upper portion of the cylindrical base (32), and the bottom of the cylindrical base (32) is based on the bottom Three first rubber feet (34) are installed with the center point at the center of the circle at equal angles;

The liquid collecting device (2) includes a liquid collecting bottle (9) detachably installed inside the cylindrical groove (33), and an end cover (10) is screwed on an upper end of the liquid collecting bottle (9), A first connecting pipe (11) and a second connecting pipe (15) are connected to the upper part of the end cover (10), and the bottom of the end cover (10) is fixedly installed with the first connecting pipe (11) ) A one-way valve (14) communicating with the bottom end and an anti-overflow valve (18) communicating with the bottom end of the second connecting pipe (15), a first part of the first connecting pipe (11) is provided with a first A valve (13), and the upper end of the first connecting tube (11) is in communication with a first insertion port (12), and a second valve (17) is provided in the middle of the second connecting tube (15), and the A second insertion port (16) is connected to the upper end of the second connection tube (15), and a first hose (5) is inserted outside the first insertion port (12);

The negative pressure generating device (3) includes a housing (35), an intake pipe (37) and an air outlet pipe (40) are symmetrically installed on both side walls of the housing (35), and the housing (35) A vacuum pump (44) is fixedly installed on the inner bottom of the vacuum pump, the suction port of the vacuum pump (44) communicates with one end of the suction tube (37), and the air outlet of the vacuum pump (44) communicates with the air outlet tube One end of (40) communicates, and the other end of the suction pipe (37) communicates with a third socket (38) connected to the second socket (16) through a second hose (6) A vacuum pressure gauge (36) communicating with the suction pipe (37) is also fixedly installed on the upper part of the casing (35).
A surgical negative pressure suction device according to claim 1, characterized in that the anti-overflow valve (18) includes a hollow valve body (25) fixedly installed at the bottom of the end cover (10), the hollow A third connecting pipe (20) whose upper end communicates with the bottom end of the second connecting pipe (15) is connected and installed on the top wall of the valve body (25), and a side wall of the hollow valve body (25) is provided There is a first air inlet hole (21), a rubber valve core (22) is movably arranged on the inner bottom of the hollow valve body (25), and a support rod (23) is fixedly connected to the bottom of the rubber valve core (22), The bottom end of the support rod (23) extends through the bottom wall of the hollow valve body (25) to the bottom of the hollow valve body (25), and a float (24) is connected to the outside.
The surgical negative pressure suction device according to claim 1, characterized in that the liquid collection bottle (9) is made of transparent plastic, and the outer surface of the liquid collection bottle (9) is provided with a scale mark (19) ).
The surgical negative pressure suction device according to claim 1, characterized in that a protective head (7) is inserted into the end of the first hose (5) away from the first insertion port (12) ), the protective head (7) includes a plug-in tube (30) inserted into an end of the first hose (5) away from the first plug-in port (12) and exposed on the first An arc-shaped silicone ferrule (31) outside the hose (5), the plug-in tube (30) and the arc-shaped silicone ferrule (31) are provided integrally.
The surgical negative pressure suction device according to claim 1, characterized in that: the housing (35) is a square housing, and four second rubber feet ( 42), a control switch (43) is further provided at the front of the casing (35), and the control switch (43) is electrically connected to the vacuum pump (44) through a wire.
The surgical negative pressure suction device according to claim 1, characterized in that: a safety valve (39) is connected and installed on the suction tube (37) at a position outside the casing (35), The safety valve (39) includes a cylindrical barrel (49), the upper end of the cylindrical barrel (49) is a closed end, and the bottom end of the cylindrical barrel (49) is an open structure, the cylindrical The closed end wall of the barrel (49) is centrally provided with a second air inlet hole (54), and the open end of the cylindrical barrel (49) is integrally provided with a first threaded portion (51), the cylindrical The cylinder (49) is fixedly installed on the upper surface of the suction pipe (37) through the first threaded portion (51), and the inside of the cylindrical cylinder (49) is fixed at a position close to the open end thereof A baffle (50) is installed, and a plurality of through holes (52) are evenly opened inside the baffle (50), and an upper part of the baffle (50) is fixedly installed with a curved rubber top core through a spring (53) (55), the arc surface of the arc-shaped rubber top core (55) conflicts with the second air inlet hole (54).
The surgical negative pressure suction device according to claim 1, characterized in that the second hose (6) is located between the second socket (16) and the third socket (38) There is also a filtering device (4), the filtering device (4) includes a box body (26), the two sides of the box body (26) are symmetrically connected and provided with the second hose ( 6) An internal fourth insertion port (28) and a fifth insertion port (29), and a stainless steel wire filter screen (27) is fixedly installed in the center of the box body (26).
The surgical negative pressure suction device according to claim 7, characterized in that a cover plate (8) is further installed on one side wall of the box body (26) by screws, and the cover plate (8) and Rubber sealing gaskets are also arranged between the side walls of the box body (26).
The surgical negative-pressure suction device according to claim 1, characterized in that a silencer device (41) is fixedly installed at the other end of the air outlet tube (40), and the silencer device (41) includes a cylindrical shell Body (45), a second threaded portion (46) is integrally connected to one end wall of the cylindrical housing (45), and a plurality of exhausts are evenly provided on one end wall of the cylindrical housing (45) Hole (48), the cylindrical casing (45) is fixedly installed on the other end of the air outlet pipe (40) through the second threaded portion (46), and the cylindrical casing ( 45) A cylindrical hollow plate body (47) with a plurality of round holes uniformly opened on the side wall is fixedly installed in the center.
The surgical negative pressure suction device according to claim 1, wherein the surface of the casing (35) is further provided with an anti-corrosion layer, and the anti-corrosion layer is prepared by the following method:

Weigh the following raw materials in parts by weight: acrylic resin 35-45 parts, calcium carbonate 12-18 parts, p-toluenesulfonic acid powder 15-20 parts, mica powder 6-10 parts, phenolic resin 18-26 parts, glycerin 3- 5 parts, 12-12 parts of alcohol ester, 1-3 parts of ferric chloride solution and 40-60 parts of water;

S1. Add the weighed glycerin, ferric chloride solution, alcohol ester twelve and water to the mixer and stir for 20-30min at a stirring speed of 600-800r/min to prepare a mixed solution;

S2. Add acrylic resin, calcium carbonate, p-toluenesulfonic acid powder, mica powder and phenolic resin to the ball mill for fine grinding until the particle diameter is not more than 40um, to prepare mixed powder materials;

S3. Add the mixed powder material prepared in step S2 to the mixed solution prepared in step S1, and continue to stir for 30-40min with a stirrer, the stirring speed is set to 700-900r/min, the temperature is set to 80-90℃, Obtain anti-corrosion coating;

S4. Put the casing (35) into the ultrasonic cleaning machine for cleaning. The frequency of the ultrasonic cleaning machine is set to 40-60KHz, the temperature is set to 50-60℃, and the cleaning is 12-16min;

S5. The shell (35) cleaned in step S4 is dried with a hot air blower, and then the anticorrosive paint prepared in step S3 is evenly sprayed on the surface of the shell (35) after drying using a high-pressure sprayer spray gun;

S6. Put the shell (35) sprayed with anti-corrosion paint in step S5 in a drying room for drying, the drying temperature is set to 100-120 ℃, the time is set to 20-30min, that is, the anti-corrosion layer is prepared on the surface of the shell (35) .