Orthopedic trauma wound irrigation device

Abstract

This invention relates to the field of medical device technology, specifically to an orthopedic wound irrigation device, comprising an irrigation handle and a reservoir for storing irrigation fluid. An irrigation tube is fixedly connected inside the irrigation handle, and a negative pressure tube is externally connected to the irrigation tube. A filter element is fixedly connected to the end of the negative pressure tube away from the irrigation handle, and the filter element is fixedly connected to the side wall of the irrigation tube. A cleaning component for automatically cleaning the filter element is provided inside the negative pressure tube. A delivery component for conveying the irrigation fluid in the reservoir to the irrigation tube, and a negative pressure component for generating negative pressure in the negative pressure tube to draw out waste irrigation fluid from the wound, are provided on the side wall of the reservoir. A switching component is provided on the negative pressure component; when the filter element becomes clogged, the switching component diverts the irrigation fluid from the irrigation tube to the negative pressure tube, performing reverse irrigation on the filter element. This invention can realize the functions of wound irrigation and waste fluid recovery, and has automatic anti-clogging and self-cleaning functions, thereby improving irrigation efficiency.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an orthopedic wound irrigation device. Background Technology

[0002] Trauma orthopedics is a comprehensive department that primarily studies the anatomy, physiology, and biomechanics of the musculoskeletal system. This discipline encompasses a variety of conditions, including traumatic fractures, joint dislocations, ligament injuries, meniscus tears, and spinal injuries. Fractures are common traumatic injuries; postoperative wound infection and non-healing can hinder fracture healing and impair limb function recovery. Clinically, if there is significant exudate at the fracture incision site and the incision fails to heal promptly, clinicians should leave the wound open to allow for adequate drainage. Simultaneously, the infected wound should be irrigated and wet-dressed with gentamicin and saline solution. The purpose of cleaning is to actively remove surface contaminants, loose debris, sloughed or softened necrotic microorganisms, and / or residue from previous dressings from the wound surface and surrounding skin.

[0003] In existing technologies, such as the medical pulse irrigator with model number FWS-WJ-001A, a pulse gun and a double-row tube are used. The pulse gun pressurizes the irrigating fluid into a liquid stream with a certain frequency and jet force, which is then sprayed out through the irrigating tube of the double-row tube. This allows for thorough irrigation of deep and superficial tissues and bone marrow cavities in wounds and is easy to operate. While thoroughly cleaning impurities, bacteria, tissue debris, hematomas, etc., within the wound, it reduces secondary damage to surrounding normal tissues and lowers the chance of infection. Furthermore, by connecting the negative pressure tube of the double-row tube to a vacuum suction pump and a waste fluid tank, it is possible to achieve simultaneous irrigation and suction, allowing for timely discharge of irrigating waste fluid.

[0004] However, in actual use of the aforementioned irrigation device, its negative pressure suction port lacks an effective filtration and cleaning structure. Large amounts of tissue debris and blood clots generated during surgery are easily sucked into the suction port and clog the negative pressure tubing, making rapid cleaning difficult and severely impacting the surgical process. Therefore, it is necessary to propose an orthopedic wound irrigation device to solve these problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an orthopedic wound irrigation device for continuous and efficient wound irrigation and waste fluid recovery, and features automatic anti-clogging and self-cleaning functions to ensure continuity during surgery.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: An orthopedic wound irrigation device includes an irrigation handle and a reservoir for storing irrigation fluid. An irrigation tube is fixedly connected inside the irrigation handle, and a negative pressure tube is sleeved on the irrigation tube. One end of the negative pressure tube is fixedly connected to the irrigation handle, and a filter element is fixedly connected to the end of the negative pressure tube away from the irrigation handle. The filter element is fixedly connected to the side wall of the irrigation tube. A cleaning component for automatically cleaning the filter element is provided inside the negative pressure tube. A conveying component for conveying the irrigation fluid in the reservoir to the irrigation tube and a negative pressure component for providing negative pressure to the negative pressure tube to aspirate the irrigation waste fluid at the wound are provided on the side wall of the reservoir. A switching component is provided on the negative pressure component. When the filter element becomes clogged, the switching component is used to divert the irrigation fluid from the irrigation tube to the negative pressure tube, and use the irrigation fluid to reverse-flush the filter element.

[0007] The technical principles of the above solution are as follows:

[0008] During use, hold the flushing handle and pump the flushing fluid from the storage tank to the flushing tube via the delivery component. The fluid is then sprayed out from the flushing tube to flush the wound. Simultaneously, the negative pressure component generates negative pressure to simultaneously suction out the waste fluid during flushing. The filter at one end of the negative pressure tube prevents debris from entering and clogging the tube, maintaining a constant negative pressure. When the filter becomes clogged, the vacuum in the negative pressure line increases. This pressure change triggers the switching component, which diverts some of the high-pressure flushing fluid from the flushing tube into the negative pressure tube. The fluid is then flushed from the inside out through the circumferentially arranged guide tubes, clearing the blockage from the filter. Once the negative pressure in the tube returns to normal, the switching component automatically resets, and the device resumes its normal flushing and suction mode.

[0009] The above approach has the following beneficial effects:

[0010] 1. This solution uses an integrated drive design to allow irrigation and aspiration to be performed simultaneously, which not only improves surgical efficiency but also effectively maintains wound cleanliness and avoids the risk of secondary infection caused by waste fluid accumulation.

[0011] 2. This solution innovatively utilizes a pressure feedback mechanism to achieve automatic anti-clogging. When filter blockage causes abnormal negative pressure in the system, it can immediately trigger the backwashing function to quickly unclog the filter, ensuring that the surgical procedure is not interrupted and improving the reliability and continuity of the device.

[0012] 3. This solution integrates the flushing and suction functions into a single flushing handle by using a coaxial nested design for the flushing and negative pressure tubing. This solves the problems of complex tubing and bulky equipment caused by separate flushing and suction functions in existing technologies. It simplifies the intraoperative tubing layout, avoids multiple tubing entanglements, improves operational flexibility and convenience, and allows medical staff to complete all flushing and suction operations with one hand.

[0013] Furthermore, the cleaning component includes several guide tubes that are circumferentially fixed to the inner wall of the negative pressure pipe.

[0014] Beneficial effects: The circumferentially arranged guide pipes can form a uniform annular water flow during backwashing, achieving thorough cleaning of the filter elements without any dead angles.

[0015] Furthermore, the delivery assembly includes a controller and a drive box fixedly connected to the side wall of the liquid storage tank; a support plate is fixedly connected to the bottom wall of the drive box, and a drive component is fixedly connected to one side wall of the support plate; the controller is used to control the rotation of the output shaft of the drive component.

[0016] The support plate has a sliding groove, and a bracket is slidably fitted inside the groove. An upper rack and a lower rack are symmetrically fixed to the inner side wall of the bracket.

[0017] The output shaft of the drive unit passes through the support plate and is coaxially fixedly connected to a half gear. The half gear is located in the slide groove and meshes with both the upper and lower racks.

[0018] A first piston rod is fixedly connected to one end of the bracket, and a first piston cylinder is fixedly connected to the inner side wall of the drive box. The first piston rod and the inner side wall of the first piston cylinder are in sliding fit. An inlet pipe and an outlet pipe are connected to the side wall of the first piston cylinder. A first check valve is connected to both the inlet pipe and the outlet pipe. The inlet pipe is connected to the bottom of the storage tank.

[0019] A functional box is fixedly connected to the top of the drive box, and a first connecting pipe is connected to the top of the functional box. The first connecting pipe is connected to the flushing pipe. A partition is provided inside the functional box, which divides the functional box into a positive pressure chamber and a negative pressure chamber. The partition and the inner side wall of the functional box are in sliding fit. The liquid outlet pipe is connected to the positive pressure chamber.

[0020] Beneficial effects: The transmission method of combining gears, racks and pinions with pistons converts rotary motion into linear reciprocating motion, realizing fluid transportation; through the half-gear design, the support can automatically change direction, realizing the integrated effect of pumping and suction, and simplifying the overall structure.

[0021] Furthermore, the negative pressure assembly includes a waste liquid chamber fixedly connected to the side wall of the storage tank, and a second piston column fixedly connected to the end of the bracket away from the first piston column; the waste liquid chamber is connected to the negative pressure chamber, and a second connecting pipe is connected to the top of the waste liquid chamber, which is connected to the negative pressure pipe; a second piston cylinder is fixedly connected to the inner side wall of the drive box, and the inner side walls of the second piston column and the second piston cylinder are slidably engaged; an air inlet pipe and an air outlet pipe are connected to the side wall of the second piston cylinder, and a first one-way valve is also connected to both the air inlet pipe and the air outlet pipe; the air inlet pipe is connected to the negative pressure chamber, and the air outlet pipe is connected to the outside of the drive box.

[0022] Beneficial effects: By using the same drive mechanism to synchronously drive the conveying component and the negative pressure component to operate simultaneously, a single drive source can be used to drive them.

[0023] Furthermore, the switching component includes a third connecting pipe fixedly connected to the top of the function box and a liquid guiding channel opened in the partition; the guiding pipes are all connected to the third connecting pipe; one end of the liquid guiding channel is connected to the positive pressure chamber; a second one-way valve is connected inside the third connecting pipe; a spring is fixedly connected to the inner wall of the negative pressure chamber, and the end of the spring away from the inner wall of the negative pressure chamber is fixedly connected to the partition; when the partition moves to the position below the third connecting pipe, one end of the liquid guiding channel is connected to the third connecting pipe.

[0024] Beneficial effects: The flow path is automatically switched by the displacement of the baffle, realizing the mode conversion between forward flushing and reverse flushing; the design does not require additional sensors and control circuits, has a simple structure, fast response, and high reliability.

[0025] Furthermore, a baffle is detachably connected to the end of the negative pressure tube away from the flushing handle.

[0026] Beneficial effects: When rinsing wounds, the baffle can effectively reduce water splashing during rinsing, keep the surgical area clean, prevent the spread of contaminants, and improve the environmental safety of surgical procedures.

[0027] Furthermore, a filling hole is provided on the top of the liquid storage tank, and a tank cover is detachably connected to the filling hole.

[0028] Beneficial effects: The filling port allows for convenient replenishment of the flushing fluid at any time, and the tank cover effectively prevents contaminants from entering the storage tank, ensuring the cleanliness of the flushing fluid.

[0029] Furthermore, the waste liquid tank is made of transparent material, and scale lines are engraved along the height direction on the side wall of the waste liquid tank.

[0030] Beneficial effects: The transparent waste fluid tank allows for real-time observation and measurement of the drainage volume of the irrigation waste fluid during surgery, providing doctors with a reference for judging the condition and adjusting the treatment plan.

[0031] Furthermore, a nozzle is detachably connected to the end of the flushing tube away from the flushing handle.

[0032] Beneficial effects: The device allows for quick replacement of appropriate nozzles based on the different depths and shapes of the wounds. The flat nozzle is suitable for large-area irrigation of superficial wounds, while the conical nozzle is suitable for concentrated irrigation of deep wounds, thus enhancing the applicability of the device.

[0033] Furthermore, it also includes an automatic water pressure control system;

[0034] The automatic water pressure control system includes: a data acquisition module, an analysis module, and a control module.

[0035] The acquisition module includes a camera fixedly connected to the irrigation handle; the acquisition module is used to acquire image information of the wound using the camera.

[0036] The analysis module is used to identify the wound type from the wound image information; when the wound is identified as a deep wound, it generates a command to increase the irrigation pressure; when the wound is identified as a superficial wound, it generates a command to decrease the irrigation pressure.

[0037] The control module generates control signals using commands to increase and decrease flushing pressure, which are then sent to the controller. The controller uses these control signals to control the drive components to increase or decrease their rotation speed.

[0038] Beneficial effects: Superficial wounds require gentle, low-pressure irrigation, while deep, contaminated wounds require medium- to high-pressure directional irrigation. The automatic water pressure control system can automatically select the irrigation pressure according to the type of wound, making the irrigation operation more intelligent and precise. While ensuring the irrigation effect, it effectively avoids tissue damage or incomplete irrigation caused by improper pressure.

[0039] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0040] Figure 1 This is an isometric view of the orthopedic wound irrigation device of the present invention.

[0041] Figure 2 This is a frontal sectional view of the negative pressure tube in the orthopedic wound irrigation device of the present invention.

[0042] Figure 3 This is a frontal sectional axonometric view of the drive box and function box in the orthopedic wound irrigation device of the present invention.

[0043] Figure 4 This is a bottom view of the negative pressure tube in the orthopedic wound irrigation device of the present invention.

[0044] Figure 5 This is a top-view sectional view of the negative pressure tube in the orthopedic wound irrigation device of the present invention.

[0045] Figure 6 This is a frontal cross-sectional view of the drive box and function box in the orthopedic wound irrigation device of the present invention.

[0046] Figure 7 This is a frontal sectional view of the waste fluid tank in the orthopedic wound irrigation device of the present invention.

[0047] The reference numerals in the accompanying drawings of the instruction manual include: 1. Flushing handle; 2. Liquid storage tank; 3. Flushing pipe; 4. Negative pressure pipe; 5. Filter screen; 6. Guide pipe; 7. Drive box; 8. Support plate; 9. Spring; 10. Bracket; 11. Upper rack; 12. Lower rack; 13. Half gear; 14. First piston column; 15. First piston cylinder; 16. Third connecting pipe; 17. Liquid guiding channel; 18. Function box; 19. First connecting pipe; 20. Partition; 21. Positive pressure chamber; 22. Negative pressure chamber; 23. Waste liquid tank; 24. Second piston column; 25. Second connecting pipe; 26. Second piston cylinder; 27. Limiting block; 28. Box cover. Detailed Implementation

[0048] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] The following detailed description illustrates the specific implementation method:

[0052] Implementation, for example, attached Figure 1 As shown: An orthopedic wound irrigation device includes an irrigation handle 1 and a reservoir 2 for storing irrigation fluid. The reservoir 2 has a filling hole on the top and a lid 28 is detachably connected to the filling hole by threads.

[0053] like Figure 2 and Figure 5As shown, an irrigation tube 3 is integrally formed inside the irrigation handle 1, and a negative pressure tube 4 is externally connected to the irrigation tube 3. One end of the negative pressure tube 4 is integrally formed with the irrigation handle 1, and a baffle is detachably threaded to the end of the negative pressure tube 4 away from the irrigation handle 1. A nozzle is detachably threaded to the end of the irrigation tube 3 away from the irrigation handle 1. The nozzle shape is either flat or conical; in this embodiment, a conical nozzle is selected. Appropriate nozzles can be quickly changed according to the different depths and shapes of the wound. Flat nozzles are suitable for large-area irrigation of superficial wounds, while conical nozzles are suitable for concentrated irrigation of deep wounds.

[0054] like Figure 4 As shown, one end of the negative pressure pipe 4 is integrally formed with the flushing handle 1, and a filter element is fixedly connected to the end of the negative pressure pipe 4 away from the flushing handle 1 by screws. In this embodiment, the filter element is a filter screen 5. The filter screen 5 is fixedly connected to the side wall of the flushing pipe 3 by screws. A cleaning assembly for automatically cleaning the filter element is provided inside the negative pressure pipe 4. The cleaning assembly includes several guide pipes 6 integrally formed circumferentially on the inner side wall of the negative pressure pipe 4.

[0055] The side wall of the storage tank 2 is provided with a conveying component for conveying the rinsing fluid in the storage tank 2 to the rinsing pipe 3, and a negative pressure component for providing negative pressure to the negative pressure pipe 4 to aspirate the rinsing waste fluid from the wound. The negative pressure component is provided with a switching component. When the filter screen 5 is clogged, the switching component is used to divert the rinsing fluid from the rinsing pipe 3 to the negative pressure pipe 4, and use the rinsing fluid to backwash the filter screen 5.

[0056] like Figure 3 As shown, specifically, the delivery assembly includes a controller and a drive box 7 fixedly connected to the side wall of the liquid storage tank 2 by screws; a support plate 8 is fixedly connected to the bottom wall of the drive box 7 by screws, and a drive component is fixedly connected to one side wall of the support plate 8 by screws. The controller is used to control the rotation of the output shaft of the drive component. In this embodiment, the drive component is a motor.

[0057] The support plate 8 has a sliding groove, and a bracket 10 is slidably fitted inside the groove. The inner side wall of the bracket 10 has an upper rack 11 and a lower rack 12 symmetrically integrally formed.

[0058] The motor output shaft passes through the support plate 8 and is coaxially fixed to a half gear 13 by screws. The half gear 13 is located in the slide groove and meshes with both the upper rack 11 and the lower rack 12.

[0059] One end of the bracket 10 is fixedly connected to the first piston column 14 by screws, and the inner wall of the drive box 7 is fixedly connected to the first piston cylinder 15 by screws. The inner walls of the first piston column 14 and the first piston cylinder 15 slide in fit. The side wall of the first piston cylinder 15 is connected to the inlet pipe and the outlet pipe. The inlet pipe and the outlet pipe are both connected to the first check valve. The inlet pipe is connected to the bottom of the storage tank 2.

[0060] The top of the drive box 7 is integrally formed with a function box 18, and the top of the function box 18 is connected to a first connecting pipe 19, which is connected to the flushing pipe 3.

[0061] The functional box 18 is equipped with a partition 20, which divides the functional box 18 into a positive pressure chamber 21 and a negative pressure chamber 22. The partition 20 and the inner wall of the functional box 18 are in sliding fit. The liquid outlet pipe is connected to the positive pressure chamber 21. The liquid flow direction of the first one-way valve in the liquid inlet pipe and the liquid outlet pipe is from the liquid storage tank 2 to the positive pressure chamber 21.

[0062] Combination Figure 3 As shown, before rinsing, the lid 28 on top of the reservoir 2 is removed, and rinsing fluid is manually added to the reservoir 2. In this embodiment, the rinsing fluid is physiological saline. After adding the fluid, the lid 28 is installed, and the wound rinsing operation begins. Specifically, the physician holds the rinsing handle 1, so that... Figure 2 The lower end of the irrigation tube 3 is aligned with the wound. At this time, the motor is started via the controller, and the motor output shaft drives the half gear 13 to rotate clockwise. When the teeth of the half gear 13 mesh with the upper rack 11, it pushes the support 10 to move to the right, which in turn drives the first piston column 14 fixed to the support 10 to move to the right. At this time, the space inside the first piston cylinder 15 increases, generating negative pressure. Under the pressure difference between the first piston cylinder 15 and the reservoir 2, and the action of the first one-way valve in the inlet pipe, the irrigation fluid in the reservoir 2 is drawn into the first piston cylinder 15 through the inlet pipe. When the teeth of the half gear 13 mesh with the lower rack 12, it can drive the support 10 to move to the left, which in turn drives the first piston column 14 fixed to it to move to the left. At this time, the space inside the first piston cylinder 15 decreases, generating positive pressure. Under the pressure difference between the first piston cylinder 15 and the positive pressure chamber 21, and the action of the first one-way valve in the outlet pipe, the flushing fluid in the first piston cylinder 15 is pumped into the positive pressure chamber 21 of the functional box 18 through the outlet pipe. As the bracket 10 continuously drives the first piston column 14 to move back and forth, the flushing fluid in the storage tank 2 can be continuously pumped into the positive pressure chamber 21 until it is full. At the same time, the flushing fluid in the positive pressure chamber 21 can enter the first connecting pipe 19 and then enter the flushing pipe 3, and then continuously flow from the first piston cylinder 15 into the positive pressure chamber 21. Figure 2 The conical nozzle at the bottom of the middle irrigation tube 3 sprays water to rinse the wound.

[0063] like Figure 2 and Figure 7 As shown, specifically, the negative pressure assembly includes a waste liquid chamber 23 fixedly connected to the side wall of the liquid storage tank 2 by screws, and a second piston column 24 fixedly connected to the end of the bracket 10 away from the first piston column 14 by screws.

[0064] Waste liquid chamber 23 is connected to negative pressure chamber 22. A second connecting pipe 25 is connected to the top of waste liquid chamber 23, and the second connecting pipe 25 is connected to negative pressure pipe 4. Waste liquid chamber 23 is made of transparent material. Scale lines are engraved along the height direction on the side wall of waste liquid chamber 23, and the scale values ​​on the scale lines decrease sequentially from top to bottom.

[0065] A second piston cylinder 26 is fixedly connected to the inner wall of the drive box 7 by screws. The second piston rod 24 and the inner wall of the second piston cylinder 26 are slidably engaged. An air inlet pipe and an air outlet pipe are connected to the side wall of the second piston cylinder 26. A first one-way valve is also connected to both the air inlet pipe and the air outlet pipe.

[0066] The air inlet pipe is connected to the negative pressure chamber 22, and the air outlet pipe is connected to the outside of the drive box 7.

[0067] Combination Figure 3 and Figure 7 As shown, when the irrigation tube 3 irrigates the wound, the half gear 13 rotates continuously, driving the support 10 to reciprocate left and right. When the support 10 moves to the right, it drives the fixed second piston column 24 to move to the right. At this time, the space inside the second piston cylinder 26 decreases, generating positive pressure. Under the action of the first one-way valve in the air outlet pipe, the positive pressure discharges the gas inside the second piston cylinder 26 to the outside of the drive box 7 through the air outlet pipe. When the support 10 moves to the left, it drives the fixed second piston column 24 to move to the left. At this time, the space inside the second piston cylinder 26 increases, generating negative pressure. Under the action of the first one-way valve in the air inlet pipe, the negative pressure draws the gas in the negative pressure chamber 22 into the second piston cylinder 26. At this time, the negative pressure chamber 22 generates negative pressure. The negative pressure in the negative pressure chamber 22 can cause the waste liquid chamber 23 connected to it to generate negative pressure simultaneously. The negative pressure generated by the waste liquid chamber 23 simultaneously causes the second connecting pipe 25 and the negative pressure pipe 4 connected to the second connecting pipe 25 to generate negative pressure, thus... Figure 2 The negative pressure at the bottom of the negative pressure tube 4 draws the rinsing waste fluid from the wound into the negative pressure. The waste fluid first passes through the filter screen 5, where larger tissue debris and blood clots are blocked on the outside of the filter screen 5. The filtered liquid then enters the negative pressure tube 4 and flows through the second connecting tube 25 into the waste fluid chamber 23 under the action of negative pressure.

[0068] Combination Figure 7 As shown, in this embodiment, the waste liquid tank 23 and the negative pressure chamber 22 are connected by a pipe. The height of the connection point between the pipe and the waste liquid tank 23 is higher than the bottom of the second connecting pipe 25, so that when waste liquid enters the waste liquid tank 23 from the second connecting pipe 25, it falls directly into the bottom of the waste liquid tank 23 and is collected due to gravity, without flowing into the negative pressure chamber 22, thus avoiding the waste liquid from entering the device and being difficult to clean. During this process, medical personnel can observe the scale lines through the transparent side wall of the waste liquid tank 23 to monitor the waste liquid drainage flow rate in real time.

[0069] The transmission method of the conveying component and the negative pressure component of this invention transforms the rotational motion of the half gear 13 into the linear reciprocating motion of the support 10, thereby achieving the integrated effect of fluid pumping and suction using only one motor. This simplifies the overall structure, integrating the flushing and suction functions into a single flushing handle 1, and solves the problems of complex tubing and bulky equipment caused by the separate flushing and suction functions in existing technologies. It simplifies the intraoperative tubing layout, avoids multiple tubing entanglements, improves operational flexibility and convenience, and allows medical staff to complete all flushing and suction operations with one hand.

[0070] like Figure 6 As shown, specifically, the switching assembly includes a third connecting pipe 16 fixed to the top of the function box 18 by screws, and a liquid guiding channel 17 opened in the partition 20.

[0071] The guide tubes 6 are all connected to the third connecting tube 16; one end of the liquid guiding channel 17 is connected to the positive pressure chamber 21; a second one-way valve is connected inside the third connecting tube 16. The liquid flow direction of the second one-way valve inside the third connecting tube 16 is from the negative pressure chamber 22 to the third connecting tube 16.

[0072] A spring 9 is fixedly connected to the inner wall of the negative pressure chamber 22 by screws. The end of the spring 9 away from the inner wall of the negative pressure chamber 22 is fixedly connected to the partition 20 by screws. When the partition 20 moves to the position below the third connecting pipe 16, one end of the liquid guiding channel 17 is connected to the third connecting pipe 16.

[0073] In this embodiment, symmetrical limit blocks 27 are integrally formed on the top and bottom walls of the negative pressure cavity 22. The limit blocks 27 are used to limit the movement of the partition 20.

[0074] Combination Figure 6 As shown, when the filter 5 is working normally and not blocked, the negative pressure pipe 4 maintains a normal negative pressure. Due to the elastic force of the spring 9, the baffle 20 can offset the pressure difference between the positive pressure chamber 21 and the negative pressure chamber 22, so that the baffle 20 will not move when it is located in the middle of the functional box 18.

[0075] At this time, the liquid guiding channel 17 is not connected to the third connecting pipe 16. The flushing liquid in the positive pressure chamber 21 can only enter the flushing pipe 3 through the first connecting pipe 19. At the same time, under the action of the second one-way valve in the third connecting pipe 16, the gas in the third connecting pipe 16 cannot enter the negative pressure chamber 22.

[0076] When filter 5 becomes clogged due to excessive adsorption of pollutants, the negative pressure in negative pressure pipe 4 increases, which in turn increases the negative pressure in negative pressure chamber 22. When the pressure difference between positive pressure chamber 21 and negative pressure chamber 22 exceeds the elastic deformation force of spring 9, the positive pressure in positive pressure chamber 21 can push partition 20 to the right to the position of limit block 27, where it is blocked by limit block 27 and stops moving. At this time, the upper end of liquid guiding channel 17 is connected to the third connecting pipe 16 (e.g., Figure 6 As shown), the high-pressure flushing fluid in the positive pressure chamber 21 enters the third connecting pipe 16 through the fluid guiding channel 17, and then enters each of the connecting pipes 6 connected to it. It is sprayed from the inside of the filter screen 5 to the outside to form a reverse flushing flow, which can effectively flush away tissue debris that is blocked on the outer surface of the filter screen 5, thereby avoiding the device from being blocked and affecting the efficiency of flushing and suction, ensuring that the surgical procedure is not interrupted, and improving the reliability and continuity of the device.

[0077] When the filter screen 5 is cleared, the pressure in the negative pressure pipe 4 returns to normal, the spring 9 returns to its original deformation, and the baffle 20 returns to its original position to the left under the action of the spring 9. The connection between the liquid guide channel 17 and the third connecting pipe 16 is cut off, the reverse flushing stops, and the device automatically returns to the normal flushing-suction working mode.

[0078] Specifically, this also includes an automatic water pressure control system;

[0079] The automatic water pressure control system includes: a data acquisition module, an analysis module, and a control module.

[0080] The acquisition module includes a camera that is fixedly connected to the irrigation handle 1 by screws; the acquisition module is used to acquire image information of the wound using the camera.

[0081] The analysis module uses the YOLOv8 image recognition algorithm to identify the wound type from the wound image information; when the wound is identified as a deep wound, it generates a command to increase the irrigation pressure; when the wound is identified as a superficial wound, it generates a command to decrease the irrigation pressure.

[0082] The control module generates control signals using commands to increase and decrease irrigation pressure, which are then sent to the controller. The controller uses these signals to control the motor to increase or decrease its speed. When the motor output shaft speed increases, the reciprocating frequency of the support 10 increases, thereby increasing the pumping volume of irrigation fluid per unit time and correspondingly increasing the outlet pressure of the irrigation pipe 3, achieving powerful irrigation of deep wounds. When the motor output shaft speed decreases, the reciprocating frequency of the support 10 decreases, the pumping volume of irrigation fluid per unit time decreases, and the outlet pressure of the irrigation pipe 3 decreases accordingly, achieving gentle irrigation of superficial wounds.

[0083] The automatic water pressure control system of this invention achieves adaptive matching between flushing pressure and wound type through intelligent identification and automatic adjustment, which not only ensures the flushing effect but also avoids secondary damage to wound tissue.

[0084] Meanwhile, the invention adopts a single drive source to synchronously control fluid delivery and negative pressure generation, simplifying the equipment structure; through a mechanical automatic switching device, reverse flushing is immediately started when filter 5 is detected to be blocked, effectively solving the problem of pipeline blockage during surgery; the overall design takes into account both ease of operation and functional reliability, enabling medical staff to complete all operations with one hand, significantly improving surgical efficiency and quality.

[0085] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An orthopedic wound irrigation device, comprising an irrigation handle (1) and a reservoir (2) for storing irrigation fluid, characterized in that, A flushing pipe (3) is fixedly connected inside the flushing handle (1), and a negative pressure pipe (4) is connected outside the flushing pipe (3). One end of the negative pressure pipe (4) is fixedly connected to the flushing handle (1), and the other end of the negative pressure pipe (4) away from the flushing handle (1) is fixedly connected to a filter element. The filter element is fixedly connected to the side wall of the flushing pipe (3). A cleaning component for automatically cleaning the filter element is provided inside the negative pressure pipe (4). The side wall of the storage tank (2) is provided with a conveying component for conveying the rinsing liquid in the storage tank (2) to the rinsing pipe (3), and a negative pressure component for providing negative pressure to the negative pressure pipe (4) to aspirate the rinsing waste liquid at the wound site; The negative pressure assembly is equipped with a switching component. When the filter element becomes clogged, the switching component is used to divert the flushing liquid from the flushing pipe (3) into the negative pressure pipe (4) and use the flushing liquid to back-flush the filter element.

2. The orthopedic wound irrigation device according to claim 1, characterized in that, The cleaning assembly includes several guide tubes (6) that are circumferentially fixed to the inner wall of the negative pressure tube (4).

3. The orthopedic wound irrigation device according to claim 2, characterized in that, The delivery assembly includes a controller and a drive box (7) fixedly connected to the side wall of the liquid storage tank (2); a support plate (8) is fixedly connected to the bottom wall of the drive box (7), and a drive component is fixedly connected to one side wall of the support plate (8). The controller is used to control the rotation of the output shaft of the drive component. The support plate (8) has a sliding groove, and a bracket (10) is slidably fitted inside the groove. An upper rack (11) and a lower rack (12) are symmetrically fixedly connected to the inner side wall of the bracket (10). The output shaft of the drive unit passes through the support plate (8) and is coaxially fixedly connected to a half gear (13). The half gear (13) is located in the slide groove and meshes with both the upper rack (11) and the lower rack (12). One end of the bracket (10) is fixedly connected to the first piston column (14), and the inner wall of the drive box (7) is fixedly connected to the first piston cylinder (15). The inner walls of the first piston column (14) and the first piston cylinder (15) slide together. The side wall of the first piston cylinder (15) is connected to the inlet pipe and the outlet pipe. The inlet pipe and the outlet pipe are both connected to the first check valve. The inlet pipe is connected to the bottom of the storage tank (2). A functional box (18) is fixedly connected to the top of the drive box (7). A first connecting pipe (19) is connected to the top of the functional box (18). The first connecting pipe (19) is connected to the flushing pipe (3). A partition (20) is provided inside the functional box (18). The partition (20) divides the functional box (18) into a positive pressure chamber (21) and a negative pressure chamber (22). The partition (20) and the inner wall of the functional box (18) are in sliding fit. The liquid outlet pipe is connected to the positive pressure chamber (21).

4. The orthopedic wound irrigation device according to claim 3, characterized in that, The negative pressure assembly includes a waste liquid chamber (23) fixedly connected to the side wall of the storage tank (2) and a second piston column (24) fixedly connected to the end of the bracket (10) away from the first piston column (14); the waste liquid chamber (23) and the negative pressure chamber (22) are connected, and a second connecting pipe (25) is connected to the top of the waste liquid chamber (23), and the second connecting pipe (25) and the negative pressure pipe (4) are connected; A second piston cylinder (26) is fixedly connected to the inner wall of the drive box (7), and the second piston column (24) slides in cooperation with the inner wall of the second piston cylinder (26); an air inlet pipe and an air outlet pipe are connected to the side wall of the second piston cylinder (26), and a first one-way valve is also connected to both the air inlet pipe and the air outlet pipe. The air inlet pipe is connected to the negative pressure chamber (22), and the air outlet pipe is connected to the external environment of the drive box (7).

5. The orthopedic wound irrigation device according to claim 4, characterized in that, The switching assembly includes a third connecting pipe (16) fixedly connected to the top of the function box (18) and a liquid guiding channel (17) opened in the partition (20); the guide pipes (6) are all connected to the third connecting pipe (16); one end of the liquid guiding channel (17) is connected to the positive pressure chamber (21); a second one-way valve is connected inside the third connecting pipe (16); a spring (9) is fixedly connected to the inner wall of the negative pressure chamber (22), and the end of the spring (9) away from the inner wall of the negative pressure chamber (22) is fixedly connected to the partition (20); When the partition (20) moves to the position below the third connecting pipe (16), one end of the liquid guiding channel (17) is connected to the third connecting pipe (16).

6. The orthopedic wound irrigation device according to claim 5, characterized in that, The negative pressure tube (4) is located away from the flushing handle (1) and has a baffle attached to one end.

7. The orthopedic wound irrigation device according to claim 6, characterized in that, The top of the liquid storage tank (2) has a liquid filling hole, and a tank cover (28) is detachably connected to the liquid filling hole.

8. The orthopedic wound irrigation device according to claim 7, characterized in that, The waste liquid tank (23) is made of transparent material, and scale lines are engraved on the side wall of the waste liquid tank (23) along the height direction.

9. The orthopedic wound irrigation device according to claim 8, characterized in that, The flushing tube (3) is detachably connected to a nozzle at one end away from the flushing handle (1).

10. The orthopedic wound irrigation device according to claim 9, characterized in that, It also includes an automatic water pressure control system; The automatic water pressure control system includes: a data acquisition module, an analysis module, and a control module; The acquisition module includes a camera fixedly connected to the irrigation handle (1); the acquisition module is used to acquire image information of the wound using the camera; The analysis module is used to identify the wound type from the wound image information; when the wound is identified as a deep wound, it generates a command to increase the irrigation pressure; when the wound is identified as a superficial wound, it generates a command to decrease the irrigation pressure. The control module generates control signals using commands to increase and decrease flushing pressure, which are then sent to the controller. The controller uses these control signals to control the output shaft of the drive component to increase or decrease its rotational speed.

Images