Medical waste liquid collector

Abstract

The invention discloses a medical waste liquid collector which comprises a combined collection container, an air guide pipe, a negative pressure aspirator, a liquid guide pipe and a suction head, the combined collection container is provided with a barrel body detachably sealed by a barrel cover, a soft bag is arranged in the barrel body, and the soft bag and the barrel cover are connected together and jointly surround to form a containing cavity for temporary storage of waste liquid. The barrel cover is provided with a cover body air guide connector and a cover body liquid guide connector which are communicated with the outside and the containing cavity, one end of the air guide pipe is communicated with the containing cavity through the cover body air guide connector, the other end of the air guide pipe is connected into the negative pressure aspirator, one end of the liquid guide pipe is communicated with the containing cavity through the cover body liquid guide connector, and the other end of the liquid guide pipe is connected into the suction head. The container reusability contradiction and the integration requirement of aerosol prevention and control can be systematically solved, and the efficient and safe clinical requirements of modern surgery are met.

Description

Technical Field

[0001] The present invention relates to the technical field of waste treatment, especially the technical field of medical waste liquid treatment. Background Art

[0002] In surgical operations and clinical procedures, the timely removal and safe treatment of waste liquid (including blood, body fluids, irrigation fluids, etc.) are key steps to ensure a clear surgical field and reduce the risk of infection. Existing medical waste liquid suction devices mostly use rigid containers (such as stainless steel or high-strength plastic buckets) to provide a cavity for the waste liquid, and are connected to a suction pump through a negative pressure pipeline (using negative pressure to promptly suck the waste liquid into the rigid container for temporary storage), such as a uterine cavity cleaning device for obstetrics with waste liquid treatment function with the publication number CN112043363B and a medical waste liquid collection tank with the publication number CN107892116A. However, such medical waste liquid suction devices often have the following significant defects: 1) High reuse cost and cumbersome disinfection operation of rigid containers: Although rigid containers are in direct contact with the waste liquid, due to the too high cost of single-use, they usually need to be disinfected repeatedly for reuse. Rigid containers are often fixed together with electronic components such as suction pumps and solenoid valves, which brings trouble to the disinfection operation. 2) Risk of secondary pollution caused by waste liquid dumping: During the process of medical staff dumping the waste liquid from the rigid container to the medical waste treatment system after the operation, it is very easy to generate aerosols (such as viruses and bacteria spreading with droplets), which pose a threat of biological pollution to medical staff and the environment, especially when dumping waste liquid from infectious cases (such as patients with hepatitis and HIV infection, etc.). 3) Lack or insufficient reliability of volume monitoring function: Most rigid containers rely on visual judgment of the liquid level, but medical staff are prone to overlook the observation in emergency situations during the operation, resulting in waste liquid overload and pipeline blockage. In addition, a few electronic monitoring solutions usually have defects such as complex sensor installation, high cost, or high false alarm rate. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the prior art, and propose a medical waste liquid collector with low cost, simple disinfection and anti-aerosol pollution, which can systematically solve the contradiction of container reusability and the integrated demand of aerosol prevention and control, and adapt to the efficient and safe clinical needs of modern surgeries.

[0004] To achieve the above-mentioned purpose, the present invention proposes a medical waste liquid collector, including a combined collection container, an air duct, a negative pressure suction device, a liquid duct and a suction head, the combined collection container has a barrel body detachably closed by a barrel cover, a soft bag is contained in the barrel body, the soft bag is connected to the barrel cover and together surrounds a cavity for temporarily storing waste liquid, the barrel cover has a cover body air duct joint and a cover body liquid duct joint connecting the outside world with the cavity, one end of the air duct is connected to the cavity through the cover body air duct joint and the other end is connected to the negative pressure suction device, one end of the liquid duct is connected to the cavity through the cover body liquid duct joint and the other end is connected to the suction head.

[0005] Preferably, it also includes a positioning joint, a balancing air pipe and a three-way joint, one end of the positioning joint passes through the barrel wall and extends to the annular cavity between the barrel body and the soft bag, and the other end is indirectly connected to the three-way joint through the balancing air pipe, and the three-way joint is installed between the cover body air guide joint and the air guide pipe.

[0006] Preferably, one end of the positioning joint located in the annular cavity is blocked by a plug, the plug has an outer protrusion extending toward the soft bag, and the positioning joint is also provided with a plurality of side air inlet holes arranged around the plug.

[0007] Preferably, a connecting joint is installed between the air-conducting joint of the cover body and the three-way joint, and between the liquid-conducting joint of the cover body and the liquid-conducting tube, respectively, and the connecting joint is provided with a joint cover.

[0008] Preferably, sealing rings are provided at adjacent surfaces of the barrel body and the barrel cover, and the combined collection container also includes a fastening mechanism that can assist the barrel body and the barrel cover to be brought closer together, and the fastening mechanism includes a ring, a locking handle and a locking head, and the ring is sleeved outside the barrel body, and one end of the locking handle and the locking head are respectively hinged to the ring and the other ends can be snapped together and jointly press the barrel cover to close the barrel body.

[0009] Preferably, it also includes a liquid level self-monitoring mechanism, which includes a shell, a water-soluble isolation block and a spring, one end of the cover gas guide joint extending into the cavity is inserted into the shell and supports the shell in sequence through the water-soluble isolation block and the spring, the shell has a shell hole connecting the shell cavity and the cavity, and the water-soluble isolation block can guide the gas from the shell to the cover gas guide joint through the block channel during the undissolved period.

[0010] Preferably, a pressure plate is provided between the water-soluble isolation block and the spring.

[0011] Preferably, the water-soluble isolation block is formed by pressing water-soluble salt particles mixed with a water-soluble adhesive.

[0012] Preferably, the barrel cover and the soft bag are detachably connected together.

[0013] Preferably, a bag clamping mechanism is provided between the bucket cover and the soft bag. The bag clamping mechanism includes an inner screw cylinder, an outer screw cylinder and a washer. The top end of the inner screw cylinder is fixed to the bucket cover, and the bottom end has an outwardly turned edge with an annular groove. The washer is located in the annular groove. The outer screw cylinder is threadedly connected outside the inner screw cylinder and can be inserted into the annular groove during relative threaded rotation with the inner screw cylinder and jointly clamp the soft bag with the inner screw cylinder.

[0014] Advantages of the present invention: 1) By adopting a detachable bucket cover to close the bucket body, and installing a soft bag that can extend into the bucket body below the bucket cover to hold waste liquid, and at the same time equipping with an air guide pipe and a liquid guide pipe to connect the soft bag to a negative pressure aspirator and a suction head respectively, it can not only make the bucket body only play a role of supporting and protecting the soft bag during use, so that the bucket body can avoid direct contact with the waste liquid as much as possible for later disinfection and reuse, taking into account the use cost and the convenience of reuse, and at the same time not directly installing charged components on the combined collection container, but only retaining the negative pressure aspirator provided separately relative to the combined collection container to provide suction power, which is more convenient for the disinfection and reuse work, and the waste liquid can be directly carried out and thrown into the collection basket with the soft bag, effectively avoiding the risk of secondary pollution caused by waste liquid dumping; 2) By installing a positioning joint on the bucket body, one end of the positioning joint penetrates the bucket wall and uses the side air inlet hole and the plug with an outward convex part for lateral air inlet, and the other end of the positioning joint is connected to the air extraction path by a balance air pipe, so that the cavity inside the soft bag and the annular cavity between the bucket body and the soft bag can maintain air pressure balance with each other, avoiding deformation of the soft bag due to inconsistent internal and external air pressures as much as possible, and at the same time being able to effectively prevent the soft bag from blocking the positioning joint during the expansion and sticking to the outside; 3) By adding a liquid level self-monitoring mechanism composed of a housing, a water-soluble isolation block, a pressing plate and a spring in the soft bag, on the one hand, it can not affect the normal air outlet of the soft bag when the liquid level in the bag is low, and on the other hand, it can make the water-soluble isolation block dissolve automatically when the liquid level in the bag is high, and then make the spring push the pressing plate against the air guide joint of the cover body to close the air outlet path. It not only has a simple overall structure and low preparation cost, but also can effectively avoid problems such as waste liquid overload, pipeline blockage and liquid backflow into the negative pressure aspirator caused by negligence of personnel supervision; 4) By adopting a bag clamping mechanism composed of an inner screw cylinder, an outer screw cylinder and a washer to install the bucket cover and the soft bag together by clamping, the bucket cover does not need to be discarded together with the soft bag, further reducing the waste rate of hard components and reducing the use cost of the device.

[0015] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the drawings. Description of the drawings

[0016] Figure 1 It is a working schematic diagram of the first embodiment; Figure 2 It is an assembly schematic diagram of the combined collection container, air duct and liquid guide tube in the first embodiment; Figure 3 It is an assembly schematic diagram of the barrel cover and the soft bag in the first embodiment; Figure 4 It is Figure 2 A cross-sectional view when removing the fastening mechanism; Figure 5 It is Figure 4 An enlarged schematic diagram of part A of Figure 6 It is a schematic diagram of the installation position of the liquid level self-monitoring mechanism in the second embodiment; Figure 7 It is an assembly schematic diagram of the combined collection container (when removing the fastening mechanism), air duct, liquid guide tube and liquid level self-monitoring mechanism in the second embodiment; Figure 8 It is Figure 7 An enlarged schematic diagram of part B of

[0017] In the figure: 1 - combined collection container, 11 - barrel body, 12 - barrel cover, 121 - cover body air guide joint, 122 - cover body liquid guide joint, 13 - soft bag, 131 - scale line, 14 - positioning joint, 141 - plug, 142 - side air intake hole, 15 - balance air duct, 16 - three-way joint, 17 - connection joint, 18 - fastening mechanism, 19 - bag clamping mechanism, 191 - inner screw cylinder, 192 - outer screw cylinder, 193 - washer, 2 - air duct, 3 - negative pressure aspirator, 4 - liquid guide tube, 5 - suction head, 6 - basket rack, 7 - liquid level self-monitoring mechanism, 71 - outer shell, 711 - shell hole, 72 - water-soluble isolation block, 721 - block body channel, 73 - pressing plate, 74 - spring. Specific implementation manners

[0018] First embodiment: Refer to Figures 1 to 5, this embodiment includes a combined collection container 1, an air duct 2, a negative pressure aspirator 3, a liquid guide tube 4, and a suction head 5. The combined collection container 1 has a barrel body 11 detachably closed by a barrel cover 12. A soft bag 13 is contained in the barrel body 11. The soft bag 13 is connected to the barrel cover 12 and together they enclose a cavity for temporarily storing waste liquid. The barrel cover 12 respectively has a cover body air guide joint 121 and a cover body liquid guide joint 122 that communicate the outside with the cavity. One end of the air duct 2 is connected to the cavity through the cover body air guide joint 121 and the other end is connected to the negative pressure aspirator 3. One end of the liquid guide tube 4 is connected to the cavity through the cover body liquid guide joint 122 and the other end is connected to the suction head 5. Among them, scale lines 131 are printed on the surface of the soft bag 13, and the negative pressure aspirator 3 can be directly embedded in the operating room wall to reduce the occupation of the operating room floor space.

[0019] It further includes a positioning joint 14, a balance air duct 15, and a three-way joint 16. One end of the positioning joint 14 penetrates the barrel wall and extends to the annular cavity between the barrel body 11 and the soft bag 13, and the other end is indirectly connected to the three-way joint 16 through the balance air duct 15. The three-way joint 16 is installed between the cover body air guide joint 121 and the air duct 2. With such a design, when the negative pressure aspirator 3 is started, on the one hand, it can make the cavity generate negative pressure through the cover body air guide joint 121 and have the function of sucking waste liquid, and on the other hand, it can also make the annular cavity and the cavity maintain a balance of internal and external vacuum negative pressure through the positioning joint 14 and the balance air duct 15 (that is, the soft bag 13 is not easily deflated rapidly under the influence of atmospheric pressure).

[0020] One end of the positioning joint 14 located in the annular cavity is blocked by a plug 141. The plug 141 has a convex portion extending towards the soft bag 13. A plurality of side air intake holes 142 are also provided on the positioning joint 14 around the plug 141. Among them, since the side air intake holes 142 are provided on the side of the positioning joint 14, even if the soft bag 13 is pressed against the barrel body 11 due to the influence of air pressure, it is not easily blocked by the soft bag 13 (that is, the negative pressure channel of the annular cavity is not easily blocked). In addition, the positioning joint 14 can also use the plug 141 with a convex portion to support the soft bag 13 outward, thereby further preventing the side air intake holes 142 from being blocked.

[0021] Connection joints 17 are respectively installed between the cover body air guide joint 121 and the three-way joint 16, and between the cover body liquid guide joint 122 and the liquid guide tube 4. The connection joints 17 are self-equipped with joint covers.

[0022] A sealing ring is provided at the adjacent surface of the barrel body 11 and the barrel cover 12. The combined collection container 1 further includes a fastening mechanism 18 that can assist the barrel body 11 and the barrel cover 12 to approach each other. The fastening mechanism 18 includes a ferrule, a locking handle, and a locking head. The ferrule is sleeved outside the barrel body 11. One end of the locking handle and the locking head are respectively hinged to the ferrule, and the other ends can be clamped together and jointly press the barrel cover 12 to tightly close the barrel body 11.

[0023] The combined collection container 1 is suspended above the ground or tabletop through a basket rack 6.

[0024] In this embodiment, the barrel cover 12, the soft bag 13, the balance air pipe 15, the three-way joint 16, the connection joint 17, the air guide pipe 2, the liquid guide pipe 4, and the suction head 5 are all disposable components, while the rest can be reused after disinfection.

[0025] The working process of this embodiment: Before use, first put the soft bag 13 into the barrel body 11 and cover the barrel cover 12 on the barrel body 11. After further closing the barrel cover 12 by using the fastening mechanism 18, as Figure 1 、 Figure 2 and Figure 4 shown, complete the pipeline connection work (install the three-way joint 16 at the connection joint 17 above the cover body air guide joint 121, install the balance air pipe 15 and the air guide pipe 2 between the three-way joint 16 and the positioning joint 14 and between the three-way joint 16 and the negative pressure suction device 3 respectively, and install the liquid guide pipe 4 and the suction head 5 in sequence at the connection joint 17 above the cover body liquid guide joint 122).

[0026] During use, extend the suction head 5 to the part to be aspirated, and then start the negative pressure suction device 3; during this period, on the one hand, the gas will successively leave the cavity along the cover body air guide joint 121, the connection joint 17, the three-way joint 16, and the air guide pipe 2, causing the soft bag 13 to generate a negative pressure suction force. On the other hand, the gas will also successively leave the annular cavity along the positioning joint 14, the balance air pipe 15, the three-way joint 16, and the air guide pipe 2 to make the cavity 7 and the annular cavity maintain the air pressure balance as much as possible; in addition, the waste liquid will enter the cavity along the suction head 5, the liquid guide pipe 4, the connection joint 17, and the cover body liquid guide joint 122 for temporary storage.

[0027] After use, first unplug the three-way joint 16 and the liquid guide pipe 4 at the two connection joints 17 respectively, and then close the joint covers of the two connection joints 17 respectively. Subsequently, disassemble the fastening mechanism 18, and then remove the barrel cover 12 and the soft bag 13 from the barrel body 11 and transfer them to the waste treatment center for centralized treatment.

[0028] Embodiment 2: Refer to Figure 6, and also includes a liquid level self-monitoring mechanism 7, which includes a shell 71, a water-soluble isolation block 72 and a spring 74. The end of the cover gas guide joint 121 extending into the cavity is inserted into the shell 71 and supports the shell 71 in sequence through the water-soluble isolation block 72 and the spring 74. The shell 71 has a shell hole 711 connecting the shell cavity and the cavity. The water-soluble isolation block 72 can guide the gas from the shell 71 to the cover gas guide joint 121 through the block channel 721 during the undissolved period.

[0029] A pressure plate 73 is provided between the water-soluble isolation block 72 and the spring 74 , so that the pressure plate 73 is used to prevent the spring 74 from squeezing the water-soluble isolation block 72 in a point-type manner.

[0030] The water-soluble isolation block 72 is formed by pressing water-soluble salt particles mixed with a water-soluble adhesive; wherein the water-soluble salt particles can be selected from one or a combination of sodium chloride (cheap and easy to obtain, and dissolves quickly), sodium sulfate (higher hardness than sodium chloride, more stable structure after pressing, but slightly slower dissolving speed) and sodium citrate (environmentally friendly and non-toxic, dissolves very quickly, but the cost is relatively high); on this basis, the water-soluble adhesive can be selected from polyvinyl alcohol (soluble in cold water, high bonding strength, and good compatibility with salt particles) and / or hydroxypropyl methylcellulose (quickly soluble in cold water, good film-forming properties, but slightly lower strength than PVA); in addition, the ratio of the water-soluble adhesive to the water-soluble salt particles is controlled at 1:5 to 10.

[0031] The rest is the same as in the first embodiment.

[0032] In this embodiment, the liquid level self-monitoring mechanism 7 can automatically monitor whether the soft bag 13 is overfilled; Specifically, under normal circumstances, since the water-soluble isolation block 72 is separated between the cover gas guide joint 121 and the pressure plate 73, the gas can first enter the shell cavity from the storage cavity along the shell hole 711, and then enter the cover gas guide joint 121 along the block channel 721; if the soft bag 13 is filled with too much liquid, the waste liquid will enter the shell cavity along the shell hole 711 and cause the water-soluble isolation block 72 to dissolve, so that the pressure plate 73 is close to and blocks the cover gas guide joint 121 under the elastic pushing action of the spring 74, thereby preventing the waste liquid from flowing out prematurely along the cover gas guide joint 121.

[0033] Embodiment three: See also Figure 7 and Figure 8 The barrel cover 12 and the soft bag 13 are detachably connected together.

[0034] A bag clamping mechanism 19 is provided between the barrel cover 12 and the soft bag 13, and the bag clamping mechanism 19 includes an inner screw barrel 191, an outer screw barrel 192 and a gasket 193. The top end of the inner screw barrel 191 is fixed to the barrel cover 12, and the bottom end has an outer flange with an annular groove, and the gasket 193 is located in the annular groove. The outer screw barrel 192 is threadedly connected to the outside of the inner screw barrel 191 and can be inserted into the annular groove during the threaded rotation relative to the inner screw barrel 191 and clamp the soft bag 13 together with the outer screw barrel 192.

[0035] In addition, in this embodiment, a press-type sealing strip may be further provided on the inner side of the soft bag 13 and near the top, so that the soft bag 13 can be temporarily sealed by the press-type sealing strip.

[0036] The rest is the same as in the second embodiment.

[0037] Compared with the first embodiment, the barrel cover 12 of this embodiment can be retained for disinfection and reuse, thereby reducing the cost of use; specifically, when the soft bag 13 containing waste liquid needs to be removed, the outer screw barrel 192 is directly twisted upward relative to the inner screw barrel 191 until the outer screw barrel 192 no longer clamps the soft bag 13 together with the outer screw barrel 192 through the gasket 193.

[0038] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A medical waste liquid collector, characterized in that: The invention comprises a combined collection container (1), an air guide tube (2), a negative pressure suction device (3), a liquid guide tube (4) and a suction head (5). The combined collection container (1) comprises a barrel body (11) which is detachably closed by a barrel cover (12). A soft bag (13) is contained in the barrel body (11). The soft bag (13) and the barrel cover (12) are connected together and together surround a cavity for temporarily storing waste liquid. The barrel cover (12) comprises a cover body air guide joint (121) and a cover body liquid guide joint (122) for connecting the outside with the cavity. One end of the air guide tube (2) is connected to the cavity through the cover body air guide joint (121) and the other end is connected to the negative pressure suction device (3). One end of the liquid guide tube (4) is connected to the cavity through the cover body liquid guide joint (122) and the other end is connected to the suction head (5).

2. The medical waste liquid collector according to claim 1, characterized in that: It also includes a positioning joint (14), a balancing air pipe (15) and a three-way joint (16), one end of the positioning joint (14) passes through the barrel wall and extends to the annular cavity between the barrel body (11) and the soft bag (13), and the other end is indirectly connected to the three-way joint (16) through the balancing air pipe (15), and the three-way joint (16) is installed between the cover body air guide joint (121) and the air guide pipe (2).

3. The medical waste liquid collector according to claim 2, characterized in that: One end of the positioning joint (14) located in the annular cavity is blocked by a plug (141), the plug (141) having an outer protrusion extending toward the soft bag (13), and a plurality of side air inlet holes (142) arranged around the plug (141) are also provided on the positioning joint (14).

4. The medical waste liquid collector according to claim 2, characterized in that: One end of the positioning joint (14) located in the annular cavity is blocked by a plug (141), the plug (141) having an outer protrusion extending toward the soft bag (13), and a plurality of side air inlet holes (142) arranged around the plug (141) are also provided on the positioning joint (14).

5. The medical waste liquid collector according to claim 1, characterized in that: A sealing ring is provided at adjacent surfaces of the barrel body (11) and the barrel cover (12). The combined collection container (1) further comprises a fastening mechanism (18) that can assist the barrel body (11) and the barrel cover (12) to be brought close together. The fastening mechanism (18) comprises a ring, a locking handle and a locking head. The ring is sleeved outside the barrel body (11). One end of the locking handle and the locking head are respectively hinged to the ring and the other ends can be snapped together and jointly press the barrel cover (12) to close the barrel body (11).

6. The medical waste liquid collector according to claim 1, characterized in that: The invention also comprises a liquid level self-monitoring mechanism (7), the liquid level self-monitoring mechanism (7) comprising a shell (71), a water-soluble isolation block (72) and a spring (74); one end of the cover body gas guide joint (121) extending into the cavity is inserted into the shell (71) and supports the shell (71) via the water-soluble isolation block (72) and the spring (74) in sequence; the shell (71) has a shell hole (711) connecting the shell cavity and the cavity; the water-soluble isolation block (72) can guide gas from the shell (71) to the cover body gas guide joint (121) through the block channel (721) when it is not dissolved.

7. The medical waste liquid collector according to claim 6, characterized in that: A pressure plate (73) is provided between the water-soluble isolation block (72) and the spring (74).

8. The medical waste liquid collector according to claim 6, characterized in that: The water-soluble isolation block (72) is formed by pressing water-soluble salt particles mixed with a water-soluble adhesive.

9. The medical waste liquid collector according to any one of claims 1 to 8, characterized in that: The barrel cover (12) and the soft bag (13) are detachably connected together.

10. The medical waste liquid collector according to claim 9, characterized in that: A bag clamping mechanism (19) is provided between the barrel cover (12) and the soft bag (13), the bag clamping mechanism (19) comprising an inner screw barrel (191), an outer screw barrel (192) and a gasket (193), the top end of the inner screw barrel (191) being fixed to the barrel cover (12) and the bottom end having an outer flange with an annular groove, the gasket (193) being located in the annular groove, the outer screw barrel (192) being threadedly connected to the outside of the inner screw barrel (191) and being inserted into the annular groove during the period of threaded rotation relative to the inner screw barrel (191) and clamping the soft bag (13) together with the outer screw barrel (192).

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