Liquid degassing appliance for urinary surgery, kit of liquid degassing appliance and medical instrument

Abstract

The utility model discloses a liquid degassing appliance for urinary surgery, a kit thereof and a medical instrument. The liquid degassing appliance comprises a body, and a flow guide part, a first filter part and a second filter part are arranged in a containing cavity of the body. After large-size bubbles in liquid flowing in from the liquid inlet are removed through the first filtering piece, the liquid reaches the flow guiding piece, the retention time of the liquid in the containing cavity is prolonged through guiding, then the liquid is received by the second filtering piece, and tiny bubbles contained in the liquid and generated gas are further exhausted from the exhaust port through the gas guiding pipe. According to verification, the liquid degassing device achieves efficient gas-liquid separation by means of the spiral face flow guide plate structure, prolonging of the liquid retention time, matching of the two-stage filter and the gas guide pipe penetrating into the tail of the flow guide assembly, and is suitable for flushing away pollutants such as tissue debris, blood and bacteria. The visual field of the endoscope is not shielded by bubbles, the operation visual field is clear, continuous and efficient implementation of the operation is facilitated, potential safety hazards caused by the fact that the bubbles are left in the body are avoided, and the safety of the operation is improved.

Description

Technical Field

[0001] This utility model relates to an instrument for assisting in surgical procedures, and more particularly to a liquid degassing device, which facilitates the removal of gas contained in liquids. It is used in combination with other accessories to form a kit for use as a medical device in urological surgery. Background Technology

[0002] In urological surgeries, it is often necessary to irrigate the patient's body cavities to remove contaminants such as tissue debris, blood, and bacteria, providing a clear surgical view and reducing the risk of infection. Existing irrigation devices and equipment have several shortcomings, particularly in the effective removal of air bubbles generated during gas flow. Systems that filter air bubbles are not visualized, and air bubbles mixed in the irrigation fluid can pose potential medical risks to patients. Furthermore, the flow rate adjustment is not precise enough to meet the needs of different surgical scenarios. Therefore, there is a clinical need for a liquid degassing device that would facilitate safer, more efficient, and more precise urological surgeries. Utility Model Content

[0003] One objective of this invention is to provide a liquid degassing device that facilitates the degassing of the liquid flowing into it, significantly reducing the amount of bubbles in the outflowing liquid, and providing a favorable environment for obtaining a clear field of vision during urological surgery.

[0004] Another objective of this invention is to provide a liquid degassing kit for urological surgery, which is more conducive to the safe, efficient and precise performance of urological surgery.

[0005] Another objective of this invention is to provide a medical device for urological surgery, enabling a clear field of vision during the procedure, timely replenishment of irrigation fluid, and efficient and precise execution of urological surgery.

[0006] A liquid degassing device, comprising:

[0007] The body includes a first end, a second end, and a cavity, with a liquid inlet and at least one vent outlet provided on the first end, and a liquid outlet provided on the second end.

[0008] The first filter element is disposed in the cavity to receive the liquid flowing in from the liquid inlet and remove large air bubbles in the liquid.

[0009] The flow guide is disposed in the cavity to receive liquid from the first filter element and guide the liquid to flow to the liquid outlet, thereby prolonging the residence time of the liquid in the cavity and enhancing the bubble separation effect.

[0010] The second filter element, located within the cavity, receives the liquid from the guide element and removes tiny air bubbles (generated during liquid flow), ensuring that the rinsing fluid entering the patient's body is free of air bubbles and improving rinsing safety.

[0011] When the liquid degassing device of this utility model is placed longitudinally with the first end above the second end, the exhaust port should be set higher than the liquid inlet.

[0012] Another type of liquid degassing device also includes a gas guide tube disposed within the cavity, with one end at an exhaust port and the other end at a gas inlet, for absorbing the gas separated from the liquid. Preferably, the gas inlet is positioned at the tail end of the guide member, close to the second filter element, along the flow direction of the guide member, so that the gas can be quickly discharged from the cavity.

[0013] Another liquid degassing device includes a flow guide comprising a spiral flow guide surface, which allows liquid from the first filter to flow along the spiral surface toward the liquid outlet, wherein the pitch of the spiral flow guide surface is less than 1 / 4 of the inner diameter of the cavity.

[0014] Another type of liquid degassing device includes several exhaust ports surrounding the liquid inlet, the number of which is, but not limited to, 3, 4, 5, 6 or more.

[0015] This utility model discloses a liquid degassing device, whose liquid outlet is connected to surgical instruments via a liquid outlet pipeline. It is used in urological surgery to irrigate the patient's body cavity, removing contaminants such as tissue debris, blood, and bacteria, reducing the risk of infection. It also effectively solves the problem of air bubbles affecting and obstructing the endoscopic view, providing a clear surgical field. A flow control valve is also installed on the liquid outlet pipeline for precise flow rate control.

[0016] In urological surgeries, multiple bags of lavage solution are needed to irrigate the patient's body cavity. However, the process of changing these lavage solution bags increases the risk of introducing large amounts of gas. Therefore, this invention also provides other accessories that can be combined with the liquid degassing device to form a kit, further preventing the introduction of large amounts of gas.

[0017] A liquid degassing kit for urological surgery, also including

[0018] Liquid inlet pipe is used to introduce washing liquid into liquid degassing equipment;

[0019] A branched piping system includes branch pipes and a hub pipe, with each branch pipe connected to the hub pipe, which in turn is connected to the liquid inlet pipe.

[0020] The liquid inlet is connected to a branch pipeline and a washing liquid bag at both ends, allowing the washing liquid to enter the pipeline.

[0021] The kit of this invention uses a branched pipeline with multiple levels of branches, i.e., at least two levels of branches, providing four liquid inlet ports and connecting four washing bags simultaneously. Shut-off valves are installed on the pipeline (e.g., branch pipelines) to control the amount of washing liquid used as needed, preventing the introduction of large amounts of gas into the pipeline during the connection of the washing bags to the liquid inlet ports.

[0022] The kit of this invention also includes a Murphy dropper on the liquid inlet line to provide a buffer for the washing liquid from the branched tubing.

[0023] Medical devices made from the kit of this invention can meet the clinical needs of urological surgery. During the flushing process to remove tissue debris, blood, bacteria, and other contaminants, the endoscopic view is no longer obstructed by air bubbles, resulting in a clear surgical field. This facilitates continuous and efficient surgery and avoids safety hazards caused by air bubbles remaining in the body, thus improving surgical safety. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the liquid degassing device of this utility model;

[0025] Figure 2 for Figure 1 A cross-sectional view of the liquid degassing device shown at one angle;

[0026] Figure 3 This is a schematic diagram of an embodiment of the liquid degassing kit for urological surgery according to the present invention. Detailed Implementation

[0027] The technical solution of this utility model is described in detail below with reference to the accompanying drawings. The embodiments of this utility model are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

[0028] Figure 1 This is a schematic diagram of the structure of one embodiment of the liquid degassing device of this utility model. Figure 2 for Figure 1 A cross-sectional view of the liquid degassing device shown at one angle. Figure 1 and Figure 2As shown, the liquid degassing device includes a body 100 made of transparent material, positioned longitudinally, i.e., along the Y-axis in a planar coordinate system. It includes a first end 110, a second end 120, and a cavity 130, with the first end 110 located above the second end 120. A liquid inlet 111 and at least one vent 112 are provided on the first end 110. The vent 112 should be positioned higher than the liquid inlet 111; for example, the center of the liquid inlet 111 on the first end 110 is recessed downwards, while the area around it where the vent 112 is located protrudes in a dome-like shape (see...). Figure 2 In this embodiment, there are four exhaust ports 112, which are symmetrically distributed around the liquid inlet 111. A liquid outlet 121 is provided on the second end 120. After the air bubbles are removed, the liquid is discharged through the liquid outlet 121 and connected to surgical instruments (e.g., tubing connected to the instruments) for flushing, such as in urological surgery, to flush out tissue debris, blood, bacteria and other contaminants in the body cavity.

[0029] The first filter element 200 is disposed within the cavity 130, receiving liquid flowing in from the liquid inlet 111 to remove larger air bubbles from the liquid. Its outer edge is fitted and fixed to an annular groove (not shown) located on the inner wall of the cavity 130. Liquid passing through the first filter element 200 reaches the guide element 300. The guide element 300, disposed within the cavity 130, is made of polyethylene and positioned below the first filter element 200. It includes a spiral guide surface 310 that guides the liquid from the first filter element 200 to flow towards the liquid outlet 121, increasing the residence time of the liquid within the cavity 130 and enhancing the bubble separation effect. For example, the pitch of the spiral guide surface is less than 1 / 4 of the inner diameter of the cavity.

[0030] The liquid reaching the tail of the guide member 300 still contains microbubbles, which, when used as an irrigation fluid, poses a risk of affecting the laparoscopic view. Therefore, in this embodiment, a second filter 400 is also provided in the cavity 130. This filter receives the liquid flowing out from the tail of the guide member 300 and removes the microbubbles generated during the liquid flow, ensuring that the irrigation fluid entering the patient's body is free of bubble residue and improving irrigation safety. In this embodiment, the second filter 400 has a membrane structure, which facilitates the filtration of microbubbles.

[0031] The liquid flowing out after passing through the second filter element 400 has had visible air bubbles removed. As a washing solution, it is connected to surgical instruments via the liquid outlet 121 and the liquid outlet line 40 for use in urological surgeries to flush out tissue debris, blood, bacteria, and other contaminants from body cavities. To precisely control the flow rate, a flow control valve 60 is also installed on the liquid outlet line 40 (see...). Figure 3For example, the flow control valve 60 consists of a polypropylene (PP) valve body and knob, and a medical-grade silicone valve core. One end of the valve body is connected to a transparent tube, and the other end is connected to the outlet. All connections are sealed with medical-grade adhesive to ensure a tight seal and prevent liquid leakage. By rotating the knob, the valve core rotates, changing the gap between the valve core and the valve body, thereby achieving precise adjustment of the liquid flow rate to meet the diverse needs of irrigation fluid flow rates in different surgical scenarios.

[0032] The gas discharged from the second filter element 400 enters through the air inlet 510 at one end of the air guide pipe 500 located near the top of the second filter element 400 and exits through the other end where the exhaust port 112 is located. The exhaust port 112 is a unidirectional exhaust component. For example, based on the balance of gas buoyancy and liquid static pressure, two exhaust ports arranged diagonally are assembled with the air guide pipe and extend into the tail of the flow guide assembly. When there is gas in the cavity 130, the gas rises and accumulates at the top. When the external gas pressure is greater than the pipeline system pressure, the float inside the component descends, opening the exhaust port and allowing the gas to be discharged. When the pipeline system is full of water, the float rises, closing the exhaust port to prevent liquid from flowing out. When the external gas pressure is higher than the internal pressure, the float inside the component descends, closing the exhaust port to prevent gas backflow, effectively ensuring the unidirectionality and stability of the exhaust.

[0033] The liquid degassing device of this embodiment can also be combined with other accessories to form a kit, which can be made into a medical device for urological surgery. Figure 3 A schematic diagram of an embodiment of the liquid degassing kit for urological surgery of this utility model is shown below. Figure 1 and Figure 2 ,like Figure 3 As shown, the liquid degassing kit for urological surgery in this embodiment further includes an inlet tubing 20, a branched tubing 30, and an inlet port 50. The inlet tubing 20 is used to introduce the washing solution into the liquid degassing device 10. The branched tubing 30 includes branch lines and a manifold, with each branch line connected to the manifold, which is connected to the inlet tubing. The inlet port 50 has two ends connected to one branch line and one washing solution bag (not shown), respectively, allowing the washing solution to enter the tubing.

[0034] The liquid inlet 50 includes a ring-shaped orifice holder 51 made of polyvinyl chloride or polyurethane. Each orifice holder is equipped with a straight-insertion cylindrical plug 52, made of the same material as the orifice holder 51. The plug 52 is directly inserted into the washing bag for quick connection and improved operational efficiency. The orifice holder 51 is hollow inside, serving as a channel for liquid entry. All orifice holders are of the same size to ensure stable liquid entry.

[0035] In this embodiment, the branched tubing 30 includes two levels of branches and provides four inlet ports, connecting four washing bags. Specifically, the first hub tubing 32 is connected to two first branch tubing 31 and the inlet tubing 20. The second hub tubing 34 is connected to two second branch tubing 33 and one first branch tubing 31. Shut-off valves 70 are installed on each branch tubing to control the amount of washing solution as needed, preventing the introduction of large amounts of gas into the tubing during the connection of the washing bags to the inlet ports. The shut-off valves 70 are made of medical-grade silicone and are rotary switches installed using an interference fit. Silicone has good flexibility and sealing properties; the rotary switch allows for precise control of the opening and closing of the orifice holder 51, thereby controlling the liquid inflow and allowing medical personnel to flexibly adjust the amount of washing solution entering according to actual needs.

[0036] Verification has shown that the device provided in this embodiment, through its spiral flow guide plate structure, extends the liquid residence time. Combined with a two-stage filter and an air duct extending deep into the tail of the flow guide assembly, it achieves highly efficient gas-liquid separation, ensuring that the rinsing fluid is free of air bubbles. This is suitable for use when the rinsing fluid is used to rinse away contaminants such as tissue debris, blood, and bacteria. During this process, the endoscopic view is no longer obstructed by air bubbles, resulting in a clear surgical field. This facilitates continuous and efficient surgical procedures and avoids safety hazards caused by air bubbles remaining in the body. It reduces the potential risks posed by air bubbles to the patient and improves the safety of the surgery.

[0037] The liquid degassing device and accessories are assembled into a kit to achieve precise flow rate adjustment. The manually rotated flow rate adjustment valve can precisely control the liquid flow rate to meet the needs of different surgical scenarios, improving the accuracy and safety of irrigation operations. The branched tubing enables distributed assembly of the irrigation bags, which not only avoids the introduction of air bubbles during replacement but also further improves the work efficiency of medical staff and the continuity of surgery.

Claims

1. A liquid degassing appliance, characterized in that The liquid degassing device comprises: a body comprising a first end, a second end and a cavity, a liquid inlet and at least one exhaust port being arranged on the first end, and a liquid outlet being arranged on the second end; a first filter arranged in the cavity, receiving liquid flowing from the liquid inlet and removing large bubbles in the liquid; a flow guide arranged in the cavity, receiving liquid from the first filter and guiding the liquid to flow towards the liquid outlet, so that the residence time of the liquid in the cavity is prolonged; a second filter arranged in the cavity, receiving liquid from the flow guide and removing small bubbles.

2. A liquid deaerating appliance according to claim 1, characterised in that a gas guide arranged in the cavity, one end of which is arranged at the exhaust port and the other end of which is arranged at a gas inlet, and the gas guide absorbs gas separated from the liquid.

3. A liquid deaeration appliance according to claim 2, characterised in that The gas inlet is arranged at the tail end of the flow guide, close to the second filter, along the flow direction of the flow guide.

4. The liquid deaeration appliance of claim 1, wherein The flow guide comprises a helical flow surface, so that liquid from the first filter flows along the helical surface towards the liquid outlet.

5. A liquid deaerating appliance according to claim 4, characterised in that The helical flow surface has a pitch less than 1 / 4 of the inner diameter of the cavity.

6. The liquid deaeration appliance of claim 1, wherein The number of exhaust ports is four, which are arranged around the liquid inlet, and the exhaust ports are arranged higher than the liquid inlet.

7. A liquid deaeration kit for use in urological surgery, characterized in that The liquid degassing device of claim 1, and a liquid inlet pipeline for guiding washing liquid into the liquid degassing device; a branched pipeline comprising branch pipelines and a trunk pipeline, each branch pipeline being connected to the trunk pipeline, and the trunk pipeline being connected to the liquid inlet pipeline; a liquid inlet interface, two ends of which are respectively connected to one branch pipeline and one washing liquid bag, so that washing liquid in the washing liquid bag flows into the pipeline.

8. The liquid deaeration kit for urological surgery according to claim 7, characterized in that The branched pipeline comprises two levels of branches, and four liquid inlet interfaces are provided, which are connected to four washing liquid bags.

9. The liquid deaeration kit for use in urological surgery according to claim 7, characterized in that A shut-off valve is arranged on the branch pipeline, which is used to control the amount of washing liquid.

10. A medical device, comprising The liquid degassing device of claim 1.

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