Waste liquid collecting device for knee arthroscopic surgery
By designing a waste fluid collection device that uses a bracket to fix the collection hood and collection bag, the problem of waste fluid splashing during knee arthroscopy was solved, achieving effective collection of waste fluid and cleaning of the surgical area, and reducing occupational exposure and the risk of falls.
Patent Information
- Application Number
- CN202520255450.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-18
AI Technical Summary
In existing knee arthroscopic surgeries, improper collection of waste fluid can easily lead to splashing, increasing the risk of occupational exposure for medical staff, and also contaminating the operating room floor, increasing maintenance costs and the risk of falls.
A waste fluid collection device was designed, comprising a support, a collection hood, and a collection bag. The support consists of two "7"-shaped rods. The collection hood is made of soft material. The collection bag is connected to the collection hood and fixed to both sides of the operating table by the support. The collection hood is provided with an operating hole and a fixing sleeve. The fixing sleeve tightly wraps the patient's limb with an airbag. The collection bag collects waste fluid.
It effectively prevents waste liquid from splashing, reduces the risk of occupational exposure for medical staff, reduces operating room pollution, lowers labor costs, and ensures the smooth conduct of surgeries.
Smart Images

Figure CN223615065U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a medical device, and more particularly to a device for collecting waste fluid during knee arthroscopy, specifically a waste fluid collection device for knee arthroscopy. Background Technology
[0002] In knee arthroscopy, several to tens of liters of saline solution are often required as the surgical medium. This saline solution continuously flows within the joint cavity, forming the surgical space. When this fluid flows out of the joint cavity, it mixes with the patient's bodily fluids and blood, becoming waste fluid. This waste fluid often splashes, increasing the risk of occupational exposure for medical staff. Furthermore, improper collection of waste fluid leading to spillage on the operating room floor can corrode the floor, causing cracks and bulges, increasing maintenance costs. The slippery floor also increases the risk of falls and injuries for medical staff, potentially leading to fractures and other serious consequences.
[0003] Currently, conventional waste fluid collection bags are mainly used in clinical practice for shielding or collecting waste fluid. However, these waste fluid collection bags are bag-shaped and made of PE film, with a small shielding area, poor airtightness, and require assistance from other personnel for support. This not only easily affects the surgical process but also increases personnel costs.
[0004] Therefore, improvements are urgently needed to better meet the needs of surgery. Utility Model Content
[0005] The purpose of this invention is to address the problems encountered in current knee arthroscopic surgery by providing a waste fluid collection device for knee arthroscopic surgery. This device can be easily installed in the surgical area, effectively blocking the splashing of waste fluid generated during surgery and effectively collecting the waste fluid, thus creating favorable conditions for the smooth progress of the surgery.
[0006] The technical solution of this utility model is:
[0007] A waste fluid collection device for knee arthroscopy surgery, comprising:
[0008] The support consists of two "7"-shaped supports, each including a horizontal bar and a vertical bar. The lower end of the vertical bar is detachably connected to the side of the operating table, allowing the supports to be positioned on both sides of the operating table. The length of the horizontal bar is adapted to the surgical area.
[0009] A fluid collection cover; the fluid collection cover is a rectangular box-shaped structure with an open top, made of soft material, with a cross-sectional size roughly equivalent to the surgical area, and its upper edges on both sides detachably connected to the crossbar; the front surface of the fluid collection cover has a through-hole-like operating hole to allow the patient's surgical limb to be inserted into the fluid collection cover from the outside in through the operating hole; and
[0010] Liquid collection bag; the liquid collection bag is rectangular in shape, made of soft material, and its length is similar to that of the liquid collection cover, while its width is smaller than that of the liquid collection cover; the liquid collection bag is located below the side of the liquid collection cover, its upper end is open, and it is connected to the bottom of the liquid collection cover; the bottom of the liquid collection bag is provided with a drain hole that can be opened and closed.
[0011] Furthermore, the lower end of the vertical rod is connected to a support device set on the operating table, which facilitates assembly and disassembly.
[0012] Furthermore, both the horizontal and vertical bars are hollow straight rods and are separate from each other; a connector is also included; the connector is a short cylindrical rod, one end of which is connected to the upper end of the vertical bar, and the other end is a suspended end, making the connector perpendicular to the vertical bar; the outer wall of the connector is threaded; one end of the horizontal bar is open, and its inner wall is threaded to mate with the connector, allowing the horizontal bar to be screwed onto the connector. Both the horizontal and vertical bars can be sterilized by high temperature and high pressure for use by medical personnel during surgery.
[0013] Furthermore, the upper edge of the side wall of the liquid collection hood is provided with several ropes for easy fastening to the crossbar; the front and rear corners of the liquid collection hood are respectively provided with connecting holes, so that the crossbar can pass through them to securely suspend the liquid collection hood.
[0014] Furthermore, there are two collection bags, which are respectively disposed on both sides of the collection cover; the distance between the collection bags is approximately equal to the width of the operating table.
[0015] Furthermore, it also includes a fixing sleeve; the fixing sleeve is a cylindrical shape with open ends, made of rigid material, and has an annular air bladder on its inner wall; the fixing sleeve is fitted into the operating hole, with its outer end flush with the outer wall of the liquid collection hood, and its inner end suspended in the liquid collection hood; the air bladder is provided with an air nozzle that can be inflated and deflated.
[0016] Furthermore, the outer end of the fixing sleeve is provided with a flange in the shape of a fly liner; the outer diameter of the flange is larger than the diameter of the operating hole, so that it can fit against the outside of the operating hole and make the connection more secure.
[0017] Furthermore, the air nozzle is in the shape of a flexible tube and is provided with a stop clip to control the opening and closing of the air nozzle.
[0018] The beneficial effects of this utility model are:
[0019] This utility model features a reasonable design, simple structure, and convenient use. It can be easily installed on the operating table to effectively enclose the knee arthroscopy surgery area, preventing the splashing of waste fluids generated during surgery, eliminating the risk of occupational exposure for medical staff, and ensuring the smooth progress of the surgery. Simultaneously, it allows for timely collection and discharge of waste fluids, preventing contamination of the operating room floor and eliminating the risk of medical staff slipping and falling due to a wet floor. Furthermore, this utility model requires no additional personnel for support during use, effectively reducing labor costs. Attached Figure Description
[0020] Figure 1 This is the first view of the present invention.
[0021] Figure 2 This is the second view of the present invention.
[0022] Figure 3 This is a structural diagram of the fixed sleeve.
[0023] Figure 4 This is a schematic diagram of the support frame.
[0024] Among them, 1-Collection bag; 2-Collection cover; 3-Tether; 4-Fixing sleeve; 5-Horizontal bar; 6-Operating table; 7-Vertical bar; 8-Support device; 9-Drainage hole; 10-Air nozzle; 11-Closing clip; 12-Operating hole; 13-Airbag; 14-Flange; 15-Connector. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] like Figures 1 to 4 As shown.
[0027] A waste fluid collection device for knee arthroscopy includes: a support, a collection hood 2, and a collection bag 1.
[0028] The support consists of two rods, both shaped like the number "7", comprising a horizontal bar 5 and a vertical bar 7. Both the horizontal bar 5 and the vertical bar 7 are hollow straight rods and are separate from each other. The length of the horizontal bar 5 is adapted to the surgical area. The length of the vertical bar 7 is approximately 60cm to meet usage requirements.
[0029] A connector 15 is provided at the upper end of the vertical rod 7. This connector 15 is a short cylindrical rod, one end of which is connected to the upper end of the vertical rod 7, and the other end is suspended, making the connector 15 perpendicular to the vertical rod 7. Furthermore, the outer wall of the connector 15 is threaded. Correspondingly, one end of the crossbar 5 is open, and its inner wall is threaded to mate with the connector 15, allowing the crossbar to be screwed onto the connector 15. This allows the bracket to be easily assembled and disassembled, facilitating use and sterilization storage.
[0030] As a standard design, the operating table 6 for knee arthroscopy is typically equipped with a support 8 on its side. This support 8 is an independent component and can be placed anywhere on the operating table's slide rail. Thus, the lower end of the vertical rod 7 can be inserted into the support 8, securing the support to both sides of the operating table and ensuring the horizontal rod is parallel to the operating table.
[0031] The fluid collection cover 2 is a rectangular box-shaped structure with an open top, made of soft material. Its cross-sectional size is approximately equal to the surgical area. Several tethers 3 are provided along the upper edge of its sidewalls for easy attachment to the crossbar 5, facilitating installation and removal. Additionally, connection holes are provided at the apex corners of the front and rear faces of the fluid collection cover 2, allowing the crossbar 5 to pass through and securely suspend the cover. The fluid collection cover 5 is approximately 40cm high, effectively preventing splashing of waste fluid during surgery and eliminating the risk of exposure for medical personnel.
[0032] The front end face of the liquid collection cover 2 is provided with a through-hole-shaped operating hole 12 with a diameter of 25-30cm, so that the patient's surgical limb can be inserted into the liquid collection cover 2 from the outside to the inside through the operating hole 12 to meet the surgical needs.
[0033] A fixing sleeve 4 is provided inside the operating hole 12. The fixing sleeve 4 is a cylindrical shape with open ends, made of rigid materials such as plastic, and has an annular air bladder 13 on its inner wall. The fixing sleeve 4 is fitted into the operating hole 12, with its outer end flush with the outer wall of the collection cover 2, and its inner end suspended within the collection cover 2. The air bladder 13 has an air nozzle 10 for inflation and deflation, allowing air to be inflated through the nozzle to tightly wrap around the patient's surgical limb, enhancing the stability of the collection cover and preventing waste fluid from flowing out of the operating hole. Preferably, the outer end of the fixing sleeve 4 has a flange 14. The outer diameter of the flange 14 is larger than the diameter of the operating hole 12, allowing it to fit snugly against the outside of the operating hole for a more secure connection.
[0034] The air nozzle 10 is a flexible tube with a stop clip 11. The stop clip 11 is sheet-shaped and made of rigid materials such as medical-grade plastic, and has a funnel-shaped through-hole. The larger end of the through-hole is round, with a diameter larger than the diameter of the air nozzle 10. The smaller end of the through-hole is wedge-shaped, which can compress the air nozzle to complete closure. The stop clip 11 is fitted onto the air nozzle 10, and the position of the through-hole can be changed to open or close the air nozzle. Specifically, when the air nozzle is at the larger end, it is open, allowing air to be inflated or deflated into the airbag; when the air nozzle is at the smaller end, it is closed, keeping the airbag in an inflated state.
[0035] The collection bag 1 is rectangular, made of soft material, and open at the top. Its length is approximately the same as the collection cover 2, while its width is less. Two collection bags are placed below each other on either side of the collection cover 2, with their upper ends connected to the bottom of the cover 2. This allows waste liquid collected by the cover 2 to flow into the collection bag 1, preventing contamination of the operating room floor. The distance between the collection bags 1 is approximately the same as the width of the operating table 6, ensuring stable placement on either side. Preferably, each collection bag 1 has an openable / closable discharge hole 9 at its bottom to promptly drain waste liquid and prevent excessive waste liquid from affecting its use.
[0036] When the liquid collection hood 2 and the liquid collection bag 1 are made into one piece and are made of TPE (thermoplastic elastomer) medical film, it is not only convenient for production and use, but also has the characteristics of wear resistance, tear resistance, and resistance to a variety of chemicals. It is suitable for contact with drugs and disinfectants, and can withstand various sterilization methods such as high temperature and radiation, which can fully meet the needs of use.
[0037] The method of using this utility model is as follows:
[0038] After the patient's surgical limb is disinfected and a sterile drape is laid on it, the non-surgical limb is positioned below the drape. After assembling the sterilized support, the lower end of the vertical rod is fixed to the support of the operating table. Then, the radiation-sterilized collection hood is unfolded, and its upper edge is fixed to the crossbar of the support. Simultaneously, the patient's surgical limb is inserted into the collection hood 2 through the operating port 12 from the outside in, and the collection bags are placed on both sides of the operating table. A pad is provided under the surgical limb to ensure it is positioned appropriately for surgery. Subsequently, the air nozzle is connected to an air pump and other equipment, and inflated to ensure the air bladder in the fixing sleeve inflates to an appropriate degree, ensuring a tight fit around the patient's surgical limb. This device effectively encloses the surgical area, without affecting the surgical procedure, and prevents waste fluid from splashing out during surgery, thus effectively eliminating the risk of occupational exposure for medical staff. At the same time, the collected waste fluid flows smoothly into the collection bag below, effectively preventing contamination of the operating room floor and eliminating the risk of medical staff slipping and falling due to a wet floor.
[0039] The parts not covered in this utility model are the same as or can be implemented using existing technologies.
Claims
1. A waste fluid collection device for knee arthroscopic surgery, characterized in that, include: support; The support consists of two "7"-shaped brackets, each including a horizontal bar and a vertical bar. The lower end of the vertical bar is detachably connected to the side of the operating table, allowing the brackets to be positioned on both sides of the operating table. The length of the horizontal bar is adapted to the surgical area. A fluid collection cover; the fluid collection cover is a rectangular box-shaped structure with an open top, made of soft material, with a cross-sectional size roughly equivalent to the surgical area, and its upper edges on both sides detachably connected to the crossbar; the front surface of the fluid collection cover has a through-hole-like operating hole to allow the patient's surgical limb to be inserted into the fluid collection cover from the outside in through the operating hole; and Liquid collection bag; the liquid collection bag is rectangular in shape, made of soft material, and its length is similar to that of the liquid collection cover, while its width is smaller than that of the liquid collection cover; the liquid collection bag is located below the side of the liquid collection cover, its upper end is open, and it is connected to the bottom of the liquid collection cover; the bottom of the liquid collection bag is provided with a drain hole that can be opened and closed.
2. The waste fluid collection device for knee arthroscopy according to claim 1, characterized in that, The lower end of the vertical rod is connected to the support device set on the operating table, which facilitates assembly and disassembly.
3. The waste fluid collection device for knee arthroscopy according to claim 1, characterized in that, Both the horizontal and vertical bars are hollow straight rods and are separate from each other; a connector is also included; the connector is a short cylindrical rod, one end of which is connected to the upper end of the vertical bar, and the other end is a suspended end, so that the connector is perpendicular to the vertical bar; the outer wall of the connector is threaded; one end of the horizontal bar is open, and its inner wall is threaded to mate with the connector, so that the horizontal bar can be screwed onto the connector.
4. The waste fluid collection device for knee arthroscopy according to claim 1, characterized in that, The upper edge of the side wall of the liquid collection hood is provided with several ropes for easy fastening to the crossbar; the front and rear corners of the liquid collection hood are respectively provided with connecting holes, so that the crossbar can pass through them to securely suspend the liquid collection hood.
5. The waste fluid collection device for knee arthroscopy according to claim 1, characterized in that, There are two collection bags, which are respectively located on both sides of the collection cover; the distance between the collection bags is approximately equal to the width of the operating table.
6. The waste fluid collection device for knee arthroscopy according to claim 1, characterized in that, It also includes a fixing sleeve; the fixing sleeve is a cylindrical shape with open ends, made of rigid material, and has an annular air bladder on its inner wall; the fixing sleeve is fitted into the operating hole, with its outer end flush with the outer wall of the liquid collection hood, and its inner end suspended in the liquid collection hood; the air bladder is provided with an air nozzle that can be inflated and deflated.
7. The waste fluid collection device for knee arthroscopy according to claim 6, characterized in that, The outer end of the fixing sleeve is provided with a flange in the shape of a fly liner; the outer diameter of the flange is larger than the diameter of the operating hole, so that it can fit against the outside of the operating hole and make the connection more secure.
8. The waste fluid collection device for knee arthroscopy according to claim 6, characterized in that, The air nozzle is in the shape of a flexible tube and has a stop clip on it to control the opening and closing of the air nozzle.