CN112023126A - Medical waste liquid collecting cylinder - Google Patents

Abstract

The invention discloses a medical waste liquid collecting barrel which comprises a barrel body, a barrel cover and a stop valve; the cylinder cover is covered on the cylinder opening of the cylinder body and is provided with a negative pressure suction opening communicated with the inner cavity of the cylinder body; the flow stopping valve comprises a retainer and a floating core; the top of the retainer is fixed on the inner wall of the cylinder cover around the negative pressure suction port; the floating core can be kept in the retainer in a floating way, and can float upwards when receiving the buoyancy of the liquid in the inner cavity of the cylinder body so as to close the negative pressure suction port. The invention can avoid the problem that the negative pressure suction port of the medical waste liquid collecting cylinder is closed in advance due to splashing of liquid in the cylinder.

Description

Medical waste liquid collecting cylinder

Technical Field

The invention relates to medical waste liquid collecting equipment.

Background

In the operation process of removing blood, sputum, human tissue or body fluid of a patient in an operating room, an emergency room and the like, a negative pressure suction system is needed to absorb and store the medical waste liquid, so that the phenomenon of secondary pollution in a hospital is avoided. Medical waste collection cartridges are one of the main components of a negative pressure aspiration system for holding the absorbed waste. The cover of the medical waste liquid collecting cylinder connected with the negative pressure source is generally provided with a check valve, and the existing check valve mainly comprises a valve seat and a valve core. The valve seat is fixed on the inner wall of the cylinder cover of the medical waste liquid collecting cylinder, and the valve core is arranged on the valve seat. The components of the valve core mainly comprise a PE sintering material and water-blocking agent particles, and the water-blocking agent particles are distributed in pores of the PE sintering material. When the liquid level in the medical waste liquid collecting cylinder rises to be in contact with the valve core, the valve core can expand, and the negative pressure suction port arranged on the cylinder cover is closed, so that the situation that the waste liquid is sucked into the negative pressure source due to the overhigh liquid level in the medical waste liquid collecting cylinder, and the negative pressure source is damaged is avoided.

The existing check valve has the following defects: when the medical waste liquid collecting cylinder vibrates or inclines, liquid in the cylinder is easy to splash, once the stop valve contacts the splashed liquid, the stop valve expands, and then the negative pressure suction port can be closed, so that the medical waste liquid negative pressure suction system stops working under the condition that the medical waste liquid collecting cylinder is not filled with the waste liquid, and the waste of medical resources is caused.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a medical waste liquid collecting cylinder, which can avoid the problem that a negative pressure suction port of the medical waste liquid collecting cylinder is closed in advance due to splashing of liquid in the cylinder.

The embodiment of the invention provides a medical waste liquid collecting barrel which comprises a barrel body, a barrel cover and a stop valve; the cylinder cover is covered on the cylinder opening of the cylinder body and is provided with a negative pressure suction opening communicated with the inner cavity of the cylinder body; the flow stopping valve comprises a retainer and a floating core; the top of the retainer is fixed on the inner wall of the cylinder cover around the negative pressure suction port; the floating core can be kept in the retainer in a floating way, and can float upwards when receiving the buoyancy of the liquid in the inner cavity of the cylinder body so as to close the negative pressure suction port.

The invention has at least the following advantages:

1. when the liquid level of the floating core of the flow stopping valve in the cylinder body is higher than the closed liquid level, the floating core can float upwards under the action of the buoyancy of liquid in the cylinder body, so that the negative pressure suction port is closed, and when the liquid in the cylinder body splashes due to the vibration or the inclination of the medical waste liquid collecting cylinder, the floating core can not float upwards even if contacting the splashed liquid, so that the situation that the negative pressure suction port of the medical waste liquid collecting cylinder is closed in advance due to the splashing of the liquid in the cylinder body is avoided, and the normal work of a medical waste liquid negative pressure suction system is ensured;

2. the invention has simple structure and easy implementation.

Drawings

Fig. 1 shows a perspective view of a medical waste collection cartridge according to an embodiment of the present invention.

Fig. 2 shows an exploded view of a medical waste collection cartridge according to an embodiment of the present invention.

Fig. 3 shows a schematic cross-sectional view of a medical waste collection cartridge according to an embodiment of the invention, wherein the floating core of the flow stop valve is in an initial position.

Figure 4 shows a schematic cross-sectional view of a medical waste collection cartridge according to an embodiment of the invention with the floating core of the flow stop valve in the closed position.

Fig. 5 shows a schematic perspective view of a flow stop valve according to an embodiment of the invention.

Figure 6 shows a front view of a floating core according to another embodiment of the invention.

Fig. 7 shows a schematic B-B cross-sectional view of fig. 6.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Please refer to fig. 1 to 5. The medical waste liquid collecting cylinder comprises a cylinder body 1, a cylinder cover 2 and a stop valve 3.

The cover 2 covers the opening of the cylinder 1, and in this embodiment, the cover 2 is connected with the top end of the cylinder 1 in a snap-fit manner. The top of the cylinder cover 2 is provided with a plurality of protruding pipes 21 and a plurality of pipe caps 22 for respectively covering the plurality of protruding pipes 21. One of the convex tubes 21 connected to the negative pressure source is communicated with a negative pressure suction port 20 arranged on the cylinder cover 2, and the negative pressure suction port 20 is communicated with the inner cavity 10 of the cylinder body 1.

The flow stop valve 3 includes a cage 31 and a floating core 32. The top of the retainer 31 is fixed to the inner wall of the cylinder cover around the negative pressure suction port 20, the floating core 32 is floatably retained in the retainer 31, and the floating core 32 floats up when receiving the buoyancy from the liquid in the inner cavity of the cylinder to close the negative pressure suction port 20.

In the present embodiment, the holder 31 has a hollow structure penetrating in the axial direction of the holder, and the side wall 311 of the holder 31 is provided with a plurality of holding grooves 313 extending in the axial direction and penetrating the holder side wall 311. The floating core 32 is inserted into the holder from the lower end thereof, and a plurality of protrusions 323 corresponding to the plurality of holding grooves 313 are provided on the side surface of the floating core 32, respectively, and the plurality of protrusions 323 extend into the plurality of holding grooves 313 without falling down, respectively.

Alternatively, the number of the holding grooves 313 is 3, and the number of the protrusions 323 is 3. Each protruding portion 323 is supported at the bottom of the corresponding holding groove 313 to prevent the floating core 32 from falling, and meanwhile, the two side surfaces of the holding groove 313 also limit the protruding portions 323 to prevent the protruding portions 323 from being stuck to the inner circumferential surface of the holder 31 after being removed from the holding groove 313, thereby preventing the floating core 32 from floating upward.

In this embodiment, the holder 31 further includes an upper wall 312, the upper wall 312 is provided with a central through hole 3120, the central through hole 3120 is located right below the negative pressure suction port 20, the periphery of the upper wall 312 is connected with the side wall 311 of the holder, and the upper wall 312 and the side wall 311 of the holder 31 together define a cavity 314 with a downward opening, and the floating core 32 is inserted into the cavity 314. The top end of the side wall 311 of the holder 31 is hermetically connected to the inner wall of the cover around the negative pressure suction port 20, and the floating core 32 floats upwards when receiving the buoyancy of the liquid in the inner cavity of the cylinder to shield the central through hole 3120 of the upper wall 312, thereby closing the negative pressure suction port 20.

Alternatively, the inner wall of the cylinder cover around the negative pressure suction port 20 has a first annular protrusion 23 extending downward, and the outer peripheral surface of the top end of the sidewall of the holder 31 is in sealing fit with the inner peripheral surface of the first annular protrusion 23, and the sealing fit may be interference fit, heat seal connection, or the like.

Further, the inner wall of the cylinder cover around the negative pressure suction port 20 has a second annular projection 24 extending downward, and the second annular projection 24 is located inside the first annular projection 23. The medical waste liquid collecting barrel comprises an antibacterial breathable film 4, the shape of the antibacterial breathable film 4 can be a film shape or a sheet shape, the antibacterial breathable film 4 is supported on the upper wall 312 of the holder, the periphery of the antibacterial breathable film 4 is in sealing fit with the inner peripheral surface of the second annular bulge 24, and the sealing fit mode can be an interference fit mode and the like. Preferably, the top surface of the upper wall 312 of the holder is provided with a plurality of radially extending support ribs 315 at intervals around the central through hole; the antibacterial breathable film 4 is supported on the plurality of support ribs 315, and the antibacterial breathable film 4 is supported by the support ribs, so that the area of a gas channel can be increased, the gas flow of the negative pressure source during vacuum pumping is increased, and the gas flow resistance is reduced.

The floating core 32 comprises a floating core body 321 and a rubber plug 322, the rubber plug 322 is fixed on the top of the floating core body 321, and the plurality of protrusions 313 are arranged on the side surface of the floating core body 321. The top end of the rubber plug 322 has a closing portion 3221 with a rounded truncated cone shape, and the center of the top surface of the closing portion 3221 is recessed inward, which is favorable for forming a good sealing fit with the inner wall of the upper wall around the central through hole 3120, thereby reliably closing the central through hole 3120. Optionally, the floating core body 321 is made of plastic, and the rubber plug 322 is made of rubber, but not limited thereto.

In this embodiment, the floating core body 321 includes a bottom wall 3211 and a first annular side wall 3212 extending upward from the periphery of the bottom wall 3211, the bottom wall 3211 and the first annular side wall jointly define a first floating core inner cavity 3213 opening upward, and the rubber plug 322 is embedded in the mouth of the first floating core inner cavity 3213.

Fig. 6 and 7 show a structure of a floating core according to another embodiment of the present invention. Referring to fig. 6 and 7, in the another embodiment, the floating core body 321 includes a top wall 3215 and a second annular side wall 3216 extending downward from the periphery of the top wall 3215, and the top wall 3215 and the second annular side wall 3216 jointly define a second floating core cavity 3217 opening downward. The top wall 3215 is provided with a central hole 3218, and the rubber plug 322 is embedded in the central hole 3218 of the top wall. The floating core adopting the structure utilizes the air of the liquid level to compress the inner cavity 3217 of the second floating core to enable the floating core to float, and in addition, compared with the floating core structure, the volume of the rubber plug 322 is made smaller, thereby reducing the manufacturing cost.

The floating core 32 of the flow stop valve is in an initial position when the liquid level in the cylinder does not reach the closed liquid level, as shown in fig. 3, and at this time, the plurality of convex portions 323 of the floating core 32 are supported by the respective groove bottoms of the corresponding holding grooves 313 under the self-weight of the floating core 32. When the liquid level in the barrel is higher than the closed liquid level, the floating core 32 of the check valve floats upwards under the buoyancy of the liquid in the barrel, so that the central through hole 3120 of the upper wall 312 is closed, the negative pressure suction port 20 is also closed, the negative pressure source communicated with the negative pressure suction port 20 cannot suck the waste liquid in the barrel, and the damage of the negative pressure source caused by the fact that the liquid level in the medical waste liquid collecting barrel is too high to suck the waste liquid into the negative pressure source is avoided. When the liquid in the cylinder body splashes due to the vibration or the inclination of the medical waste liquid collecting cylinder, the floating core 32 can not float even if contacting the splashed liquid, thereby avoiding the situation that the negative pressure suction port of the medical waste liquid collecting cylinder is closed in advance due to the splashing of the liquid in the cylinder body and ensuring the normal work of the medical waste liquid negative pressure suction system.

The present embodiment has been described in conjunction with specific examples, but it will be understood by those of ordinary skill in the art that the present invention is not limited to the examples described herein, and that various modifications and changes may be made without departing from the spirit and scope of the present invention.

Claims (10)

1. A medical waste liquid collecting cylinder comprises a cylinder body, a cylinder cover and a flow stopping valve; the cylinder cover is covered on the cylinder opening of the cylinder body and is provided with a negative pressure suction opening communicated with the inner cavity of the cylinder body; the flow stopping valve is characterized by comprising a retainer and a floating core; the top of the retainer is fixed on the inner wall of the cylinder cover around the negative pressure suction port; the floating core can be floatingly held in the retainer, and floats upwards when receiving buoyancy from liquid in the inner cavity of the cylinder body so as to close the negative pressure suction port.

2. The medical waste liquid collecting cartridge as claimed in claim 1, wherein the holder has a hollow structure penetrating in an axial direction of the holder, and a side wall of the holder is provided with a plurality of holding grooves extending in the axial direction and penetrating the side wall of the holder;

the floating core is inserted into the retainer from the lower end of the retainer, a plurality of protruding parts corresponding to the plurality of retaining grooves are arranged on the side surface of the floating core, and the protruding parts respectively extend into the plurality of retaining grooves without falling to the ground.

3. The medical waste collection cartridge of claim 2, wherein each of said projections is supported on a groove bottom of a corresponding retention groove.

4. The medical waste liquid collecting cylinder as claimed in claim 2, wherein the holder includes an upper wall provided with a central through hole located directly below the negative pressure suction port, the periphery of the upper wall being connected to the side wall of the holder, the upper wall and the side wall of the holder together defining a downwardly open cavity, the floating core being inserted into the cavity;

the top end of the side wall of the retainer is hermetically connected with the inner wall of the cylinder cover around the negative pressure suction port, and the floating core floats upwards under the buoyancy of liquid in the inner cavity of the cylinder body to shield the central through hole of the upper wall, so that the negative pressure suction port is closed.

5. The medical waste liquid collecting cartridge as claimed in claim 4, wherein the inner wall of the cartridge cover around the negative pressure suction port has a downwardly extending annular projection;

the medical waste liquid collecting cylinder comprises an antibacterial breathable film, the antibacterial breathable film is supported on the upper wall of the holder, and the periphery of the antibacterial breathable film is in sealing fit with the inner peripheral surface of the annular bulge.

6. The medical waste collection cartridge of claim 5, wherein the top surface of the upper wall of the holder is spaced about the central opening by a plurality of radially extending support ribs; the antibacterial breathable film is supported on the plurality of supporting ribs.

7. The medical waste fluid collection cartridge of any one of claims 1-6, wherein the floating core comprises a floating core body and a rubber plug, wherein the rubber plug is fixed on the top of the floating core body.

8. The medical waste liquid collecting cylinder as claimed in claim 7, wherein the floating core body comprises a bottom wall and a first annular side wall extending upward from the periphery of the bottom wall, the bottom wall and the first annular side wall together define a first floating core inner cavity opening upward, and the rubber plug is embedded in the mouth of the first floating core inner cavity.

9. The medical waste collection cartridge of claim 7, wherein the floating core body includes a top wall and a second annular side wall extending downwardly from a periphery of the top wall, the top wall and the second annular side wall together defining a second floating core lumen that is downwardly open; the top wall is provided with a center hole, and the rubber plug is embedded in the center hole of the top wall.

10. The medical waste collection cartridge of claim 7, wherein the top end of the plug has a closure portion with an inverted truncated cone shape, the top center of the closure portion being recessed inwardly.

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