Handheld ultrasonic concussion pulse type bone infection flusher

Abstract

The invention discloses a handheld ultrasonic concussion pulse type bone infection flusher which comprises a handheld part, a clean water injection cavity is formed in the handheld part, a clean water spray pipe extending forwards is installed at the front end of the clean water injection cavity, the clean water injection cavity is connected with a clean water pipe, and a clean water piston rod is inserted into the rear end of the clean water injection cavity. The clean water piston rod is in driving connection with a linear motor; the pollution discharge shell is detachably installed on the upper portion of the handheld part, a pollution discharge injection cavity is installed in the pollution discharge shell, a pollution discharge suction pipe extending forwards is installed at the front end of the pollution discharge injection cavity, a pollution discharge pipe is connected to the outer side of the pollution discharge injection cavity, and a pollution discharge piston rod is inserted into the rear end of the pollution discharge injection cavity; the clean water piston rod is connected with the pollution discharge piston rod through a connecting rod; and the ultrasonic generator is mounted in the handheld part to oscillate the clear water. The medical pulse washing gun can solve the problems that an existing medical pulse washing gun needs to depend on an external negative pressure suction source when used, use is limited, and the use cost is high due to disposable design.

Description

Technical Field

[0001] The invention relates to the technical field of medical flushing devices, in particular to a handheld ultrasonic oscillation pulse type bone infection flushing device. Background Art

[0002] With the increase in the number of patients undergoing open fractures and internal fixation surgery, bone infection has gradually become a common and difficult problem in clinical practice. Thorough debridement is the key to treating bone infection, and irrigation is an important means of removing infected necrotic tissue during debridement.

[0003] At present, medical pulse irrigation guns are commonly used for intraoperative irrigation. Pulse irrigation uses pulsating water flow under a certain pressure to flush wound tissue. The oscillation of the pulse water flow causes bacteria, foreign matter, etc. in the wound to be separated from the tissue by bouncing, thereby achieving the purpose of thorough debridement. Today's medical pulse irrigation guns are all disposable structures. The disposable pulse irrigator is a disposable irrigation system that provides pulse irrigation and suction, and can be used for wound debridement and cleaning of surgical sites.

[0004] Problems and disadvantages of pulse flushing guns: ① Pathogens of bone infection will form biofilms and firmly adhere to the bone or medullary cavity. It is difficult for pulse flushing guns to remove biofilms by simply relying on water pressure flushing; ② The sewage suction of the flushing gun depends on an external negative pressure suction source, which limits the use conditions and environment; ③ The flushing gun is designed for single use as a whole, and the cost of use is relatively high.

[0005] If a medical pulse irrigation gun cannot be used for debridement, the problem and disadvantage of debridement with intramedullary burrs is bone infection, especially the debridement of intramedullary infection. At present, intramedullary burrs are often needed to scrape away the infected necrotic tissue in the bone marrow cavity. Although this can achieve the purpose of removing biofilm to a certain extent, the use of intramedullary burrs will cause a lot of bleeding, which will cause great harm to the patient. Summary of the invention

[0006] The present invention provides a handheld ultrasonic oscillation pulse bone infection flusher, which can solve the problem that the existing medical pulse flushing gun needs to rely on an external negative pressure suction source when in use, which is limited in use, and the disposable design leads to high cost of use. At the same time, ultrasonic oscillation flushing can solve the problem that the medical pulse flushing gun cannot remove bacterial biofilm.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a handheld ultrasonic oscillation pulse bone infection flusher, comprising a handheld part, a clean water injection chamber is installed near the front end of the handheld part, a clean water spray pipe extending forward is installed at the front end of the clean water injection chamber, a clean water pipe is connected to the front of the clean water injection chamber, a clean water piston rod is inserted into the rear end of the clean water injection chamber, one end of the clean water piston rod is driven by a linear motor inside the handheld part to move axially along the clean water injection chamber, and the linear motor can drive the clean water piston rod to move axially repeatedly, thereby generating negative pressure in the clean water injection chamber, and water in the clean water pipe is drawn into the clean water injection chamber and ejected from the clean water injection chamber, and then sprayed into the bone marrow cavity to flush the bone infection site; The sewage discharge shell is detachably mounted on the upper part of the handheld part, a sewage discharge injection chamber is mounted near the front end of the sewage discharge shell, a sewage discharge suction pipe extending forward is mounted on the front end of the sewage discharge injection chamber, a sewage discharge pipe is connected to the front part of the sewage discharge injection chamber, and a sewage discharge piston rod is inserted into the rear end of the sewage discharge injection chamber. The sewage discharge shell and its internal structure can be disassembled from the handheld part, and it is a disposable structure. Only clean water is passed through the handheld part, and it can be used repeatedly. The sewage discharge piston rod repeatedly moves axially in the sewage discharge injection chamber to timely absorb the flushing water in the bone marrow cavity through the sewage discharge suction pipe; A connecting rod, wherein the first end of the connecting rod is rotatably connected to the rear end of the clean water piston rod, and the second end of the connecting rod is detachably rotatably connected to the rear end of the sewage discharge piston rod. The linkage alternating movement of the sewage discharge piston rod and the clean water piston rod can be realized through the detachable connection between the connecting rod and the sewage discharge piston rod, so that the clean water flushing and sewage suction share a linear motor, and the sewage suction of the sewage discharge injection chamber does not need to rely on an external negative pressure source, thereby overcoming the situation of limited use; The ultrasonic generator is installed inside the handheld part. The output end of the ultrasonic generator is connected to the clean water nozzle to oscillate the clean water passing through the clean water nozzle. By setting the ultrasonic generator, the clean water sprayed from the clean water nozzle has an oscillation effect. The biofilm formed by bacteria is removed by utilizing the principle of ultrasonic oscillation, thereby solving the problem that the existing medical pulse flushing gun has a poor flushing effect on bone infection.

[0008] Preferably, the sewage suction pipe, the clean water spray pipe, the position between the clean water pipe and the clean water injection chamber, and the position between the sewage pipe and the sewage injection chamber are all installed with a one-way valve. By setting up multiple one-way valves, the flow direction of the clean water can be consistent without backflow, and the flow direction of the sewage can be consistent without backflow, thereby improving the efficiency of flushing and sewage suction.

[0009] Preferably, the second end of the connecting rod is connected to the rear end of the sewage discharge piston rod through a detachable pin, and a guide groove for the detachable pin to pass through is provided on the side wall of the sewage discharge shell. By providing the detachable pin, the connection between the connecting rod and the sewage discharge piston rod can be quickly achieved, and the guide groove can guide the movement of the sewage discharge piston rod, which is also convenient for the user to observe the use of the flushing gun.

[0010] Preferably, at least a pair of rotating connecting plates are installed on both sides of the upper part of the hand-held part, the lower end of the rotating connecting plate is rotatably connected to the hand-held part, and the upper end of the rotating connecting plate is connected to the sewage discharge shell by screws. The hand-held part and the sewage discharge shell can be firmly fixed from both sides by the rotating connecting plate to reduce vibration.

[0011] Preferably, positioning bosses are installed at the front and rear positions of the upper side of the hand-held part, and a positioning groove matching the positioning boss is provided on the lower side of the sewage discharge shell. The positioning boss and the positioning groove cooperate to enable the hand-held part and the sewage discharge shell to be quickly positioned during installation, facilitate the rapid installation of the rotating connecting plate, and reduce the front and rear vibration of the sewage discharge shell.

[0012] Preferably, a battery is installed inside the hand-held part, and a cleaning switch button is installed on the outside of the hand-held part. The battery, the cleaning switch button and the linear motor are connected by wires to form a loop. The battery can power the flushing gun alone without an external power supply. The cleaning switch button conveniently controls the start and stop of the linear motor.

[0013] Preferably, an ultrasonic switch button is installed on the outer side of the handheld part, and the ultrasonic generator, battery and ultrasonic switch button are connected by wires to form a loop, which is convenient for controlling the ultrasonic oscillation function.

[0014] Preferably, the clean water spray pipe and the sewage suction pipe are arranged close to each other, so that the clean water spray pipe and the sewage suction pipe can be extended into the relatively narrow bone marrow cavity at the same time.

[0015] Preferably, the middle portion of the connecting rod is rotatably connected to the hand-held portion via a rotating shaft, which is beneficial to the stability of the high-speed swing of the connecting rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The linear motor can drive the clean water piston rod to move axially repeatedly, generating negative pressure in the clean water injection chamber, drawing water in the clean water pipe into the clean water injection chamber and ejecting it from the clean water injection chamber, and then spraying it into the bone marrow cavity to flush the bone infection site; By setting an ultrasonic generator to make the clean water sprayed from the clean water nozzle have an oscillating effect, the biofilm formed by bacteria is removed by using the principle of ultrasonic oscillation, thus solving the problem that the existing medical pulse flushing gun has a poor flushing effect on bone infection. At the same time, the sewage discharge shell and its internal structure can be disassembled from the handheld part, which is a disposable structure. Only clean water flows through the handheld part and can be used repeatedly, which reduces the cost of use. The sewage discharge piston rod can repeatedly move axially in the sewage discharge injection chamber to promptly absorb the flushing water in the bone marrow cavity through the sewage discharge suction tube. The detachable connection between the connecting rod and the sewage discharge piston rod can realize the linkage alternating movement of the sewage discharge piston rod and the clean water piston rod, so that clean water flushing and sewage suction share a linear motor, and the sewage suction of the sewage discharge injection chamber does not need to rely on an external negative pressure source, thereby overcoming the limited use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a main structural diagram of the present invention; Figure 2 It is a schematic diagram of the overall principle of the present invention.

[0018] Reference numerals: 1. Hand-held part, 11. Cleaning switch button, 12. Clean water pipe, 13. Battery, 14. Ultrasonic generator, 15. Clean water injection chamber, 16. Sewage injection chamber, 17. Clean water piston rod, 18. Linear motor, 19. Sewage piston rod, 2. Sewage housing, 20. Rotating shaft, 21. Check valve, 22. Connecting rod, 3. Clean water nozzle, 4. Sewage suction pipe, 5. Sewage pipe, 6. Removable latch, 7. Guide slide, 8. Rotating connecting plate, 9. Positioning boss, 10. Ultrasonic switch button. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The present invention is to solve the above-mentioned various problems in the prior art. Figure 1-2 As shown, the following technical scheme is provided: a handheld ultrasonic oscillation pulse bone infection flusher, comprising a handheld part 1, a clean water injection chamber 15 is installed near the front end of the handheld part 1, a clean water spray pipe 3 extending forward is installed at the front end of the clean water injection chamber 15, a clean water pipe 12 is connected to the front of the clean water injection chamber 15, a clean water piston rod 17 is inserted into the rear end of the clean water injection chamber 15, one end of the clean water piston rod 17 is driven by a linear motor 18 inside the handheld part 1 to move axially along the clean water injection chamber 15, and the linear motor 18 can drive the clean water piston rod 17 to repeatedly move axially, thereby generating negative pressure in the clean water injection chamber 15, and the water in the clean water pipe 12 is drawn into the clean water injection chamber 15 and ejected from the clean water injection chamber 15, and sprayed into the bone marrow cavity to flush the bone infection site; The sewage shell 2 is detachably mounted on the upper part of the handheld part 1. A sewage injection chamber 16 is installed near the front end of the sewage shell 2. A sewage suction pipe 4 extending forward is installed at the front end of the sewage injection chamber 16. The front part of the sewage injection chamber 16 is connected to a sewage pipe 5. A sewage piston rod 19 is inserted into the rear end of the sewage injection chamber 16. The sewage shell 2 and its internal structure can be disassembled from the handheld part 1. It is a disposable structure. Only clean water is passed through the handheld part 1, which can be used repeatedly. The sewage piston rod 19 repeatedly moves axially in the sewage injection chamber 16 to timely absorb the flushing water in the bone marrow cavity through the sewage suction pipe 4; A connecting rod 22, wherein the first end of the connecting rod 22 is rotatably connected to the rear end of the clean water piston rod 17, and the second end of the connecting rod 22 is detachably rotatably connected to the rear end of the sewage discharge piston rod 19. The detachable connection between the connecting rod 22 and the sewage discharge piston rod 19 can realize the linkage alternating movement of the sewage discharge piston rod 19 and the clean water piston rod 17, so that the clean water flushing and sewage suction share a linear motor 18, and the sewage suction of the sewage discharge injection chamber 16 does not need to rely on an external negative pressure source, thereby overcoming the situation of limited use. The middle part of the connecting rod 22 is rotatably connected to the handheld part 1 through the rotating shaft 20, which is conducive to the stability of the high-speed swing of the connecting rod 22; The ultrasonic generator 14 is installed inside the handheld part 1. The output end of the ultrasonic generator 14 is connected to the clean water nozzle 3 to oscillate the clean water passing through the clean water nozzle 3. By setting the ultrasonic generator, the clean water sprayed from the clean water nozzle has an oscillation effect. The principle of ultrasonic oscillation is used to remove the biofilm formed by bacteria, thereby solving the problem that the existing medical pulse flushing gun has a poor flushing effect on bone infection.

[0021] Specifically, the handheld part 1 in this embodiment is in the shape of a gun as a whole, and has a grip part. The clean water pipe 12 is inserted from the lower end of the grip part into the handheld part 1 and connected to the front lower part of the clean water injection chamber 15. The clean water pipe 12 can be connected to an external clean water source, such as inserted into a bucket or saline. The sewage shell 2 is a separate component, and the sewage suction pipe 4, the sewage injection chamber 16 and the sewage pipe 5 are all firmly connected to the sewage shell 2. Since these components are in contact with the sucked-out dirt, they are disposable. The handheld part 1 can be reused repeatedly. Each time it is flushed, it only needs to replace the sewage shell 2. There are no control electrical components in the sewage shell 2, and the cost is relatively low.

[0022] When installing and disassembling the sewage discharge housing 2, it is only necessary to install and disassemble the connection position between the connecting rod 22 and the sewage discharge piston rod 19, which is very convenient. After the connecting rod 22 is connected to the sewage discharge piston rod 19, when the linear motor 18 extends forward, the clean water piston rod 17 moves forward to spray out the clean water in the clean water injection chamber 15, and at the same time, the sewage discharge piston rod 19 moves backward, generating negative pressure to suck the dirt in the sewage suction pipe 4 into the sewage injection chamber 16.

[0023] When the extension rod of the linear motor 18 is pulled back, the clean water piston rod 17 moves backward, sucking the clean water in the clean water pipe 12 into the clean water injection chamber 15, and at the same time, the sewage piston rod 19 moves forward, squeezing the sewage in the sewage injection chamber 16 into the sewage pipe 5 for discharge, so as to realize the simultaneous flushing and sewage discharge. At the same time, it can reduce the physical damage to the soft tissue and the bone marrow cavity and reduce the bleeding during the debridement process.

[0024] In this embodiment, one-way valves 21 are installed at the positions between the sewage suction pipe 4, the clean water spray pipe 3, the clean water pipe 12 and the clean water injection chamber 15, and the position between the sewage pipe 5 and the sewage injection chamber 16. By setting a plurality of one-way valves 21, the flow direction of the clean water can be consistent without backflow, and the flow direction of the sewage can be consistent without backflow, thereby improving the efficiency of flushing and sewage suction. The one-way valve 21 allows the dirt in the sewage suction pipe 4 to only enter the sewage injection chamber 16, the dirt in the sewage injection chamber 16 can only enter the sewage pipe 5, the clean water in the clean water injection chamber 15 can only enter the clean water spray pipe 3, and the clean water in the clean water pipe 12 can only enter the clean water injection chamber 15.

[0025] In this embodiment, the second end of the connecting rod 22 is connected to the rear end of the sewage discharge piston rod 19 through a detachable pin 6, and a guide slot 7 for the detachable pin 6 to pass through is provided on the side wall of the sewage discharge housing 2. By providing the detachable pin 6, the connection between the connecting rod 22 and the sewage discharge piston rod 19 can be quickly achieved, and the guide slot 7 can guide the movement of the sewage discharge piston rod 19, which is also convenient for the user to observe the use of the flushing gun. When in use, the detachable pin 6 is inserted into the guide slot 7, and at the same time, the connection between the connecting rod 22 and the sewage discharge piston rod 19 can be achieved by passing through the second end of the connecting rod 22 and the rear end of the sewage discharge piston rod 19. The detachable pin 6 is a commonly used structure in the prior art, and its structure can be of many kinds, which will not be repeated here.

[0026] In this embodiment, at least a pair of rotating connecting plates 8 are installed on both sides of the upper part of the hand-held part 1, the lower end of the rotating connecting plate 8 is rotatably connected to the hand-held part 1, and the upper end of the rotating connecting plate 8 is connected to the sewage discharge shell 2 by screws. The hand-held part 1 and the sewage discharge shell 2 can be firmly fixed from both sides by the rotating connecting plate 8 to reduce vibration. Of course, the rotating connecting plate 8 can also be designed as a non-rotating structure, and both ends are connected by screws, which can also meet the fixing requirements. The rotating connecting plate 8 can be set in the middle, front or rear of the sewage discharge shell 2, and the number can be adjusted as needed.

[0027] At the same time, positioning bosses 9 are installed at the front and rear positions of the upper side of the hand-held part 1, and a positioning groove matching the positioning boss 9 is provided on the lower side of the sewage discharge shell 2. The positioning boss 9 cooperates with the positioning groove so that the hand-held part 1 and the sewage discharge shell 2 can be quickly positioned during installation, which is convenient for the rapid installation of the rotating connecting plate 8 and can also reduce the front and rear vibration of the sewage discharge shell 2. The positioning boss 9 can be pointed, and the shape of the positioning groove matches the positioning boss 9. When in use, the sewage discharge shell 2 is directly placed on the upper side of the hand-held part 1 and positioned through the positioning boss 9 and the positioning groove, and then the rotating connecting plate 8 and the detachable latch 6 are installed.

[0028] In order to facilitate the use of the flushing gun, a battery 13 is installed inside the hand-held part 1, and a cleaning switch button 11 is installed on the outside of the hand-held part 1. The battery 13, the cleaning switch button 11 and the linear motor 18 are connected by wires to form a loop. The battery 13 can power the flushing gun alone without an external power supply. The cleaning switch button 11 conveniently controls the start and stop of the linear motor 18. The battery 13 is set in the handshake part of the hand-held part 1, and a rechargeable battery can be used.

[0029] In this embodiment, an ultrasonic switch button 10 is installed on the outer side of the handheld part 1, and the ultrasonic generator 14, the battery 13 and the ultrasonic switch button 10 are connected by wires to form a loop, wherein the ultrasonic switch button 10 and the cleaning switch button 11 can be arranged side by side, so that the two functions can be flexibly operated with one hand.

[0030] In this embodiment, the clean water spray pipe 3 and the sewage suction pipe 4 are arranged close to each other, so that the clean water spray pipe 3 and the sewage suction pipe 4 can be simultaneously extended into the relatively narrow bone marrow cavity. The clean water spray pipe 3 and the sewage suction pipe 4 can be arranged close to each other in parallel or obliquely.

[0031] It can be seen that the technical solution in this embodiment can effectively remove pathogens and the biofilm formed by them, reduce intraoperative bleeding compared to the debridement method of intramedullary cavity rasp, and the equipment is reusable and can be used in an environment without negative pressure equipment.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, in the present invention, descriptions such as "primary", "secondary", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "primary" or "secondary" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A handheld ultrasonic oscillation pulse bone infection flusher, characterized in that: include: A handheld portion (1), wherein a clean water injection chamber (15) is installed near the front end of the handheld portion (1), a clean water spray pipe (3) extending forward is installed at the front end of the clean water injection chamber (15), a clean water pipe (12) is connected to the front of the clean water injection chamber (15), a clean water piston rod (17) is inserted into the rear end of the clean water injection chamber (15), and one end of the clean water piston rod (17) is driven by a linear motor (18) inside the handheld portion (1) to move axially along the clean water injection chamber (15); A sewage discharge housing (2) is detachably mounted on the upper part of the handheld part (1); a sewage discharge injection chamber (16) is mounted near the front end of the sewage discharge housing (2); a sewage discharge suction pipe (4) extending forward is mounted at the front end of the sewage discharge injection chamber (16); a sewage discharge pipe (5) is connected to the front of the sewage discharge injection chamber (16); and a sewage discharge piston rod (19) is inserted into the rear end of the sewage discharge injection chamber (16); A connecting rod (22), wherein a first end of the connecting rod (22) is rotatably connected to a rear end of the clean water piston rod (17), and a second end of the connecting rod (22) is detachably rotatably connected to a rear end of the sewage discharge piston rod (19); An ultrasonic generator (14) is installed inside the handheld part (1), and an output end of the ultrasonic generator (14) is connected to the clean water spray pipe (3) to oscillate the clean water passing through the clean water spray pipe (3).

2. The handheld ultrasonic oscillation pulse bone infection flusher according to claim 1, characterized in that: One-way valves (21) are installed at the sewage suction pipe (4), the clean water spray pipe (3), the position between the clean water pipe (12) and the clean water injection chamber (15), and the position between the sewage pipe (5) and the sewage injection chamber (16).

3. The handheld ultrasonic oscillation pulse bone infection flusher according to claim 1, characterized in that: The second end of the connecting rod (22) is connected to the rear end of the sewage discharge piston rod (19) via a detachable latch (6), and a guide slot (7) for the detachable latch (6) to pass through is provided on the side wall of the sewage discharge housing (2).

4. The handheld ultrasonic oscillation pulse bone infection flusher according to claim 3 is characterized by: At least one pair of rotating connecting plates (8) is installed on both sides of the upper part of the handheld part (1), the lower ends of the rotating connecting plates (8) are rotatably connected to the handheld part (1), and the upper ends of the rotating connecting plates (8) are connected to the sewage discharge housing (2) via screws.

5. The handheld ultrasonic oscillation pulse bone infection flusher according to claim 4, characterized in that: Positioning bosses (9) are installed at the front and rear positions of the upper side of the handheld portion (1), and a positioning groove matching the positioning bosses (9) is provided at the lower side of the sewage discharge housing (2).

6. The handheld ultrasonic oscillation pulse bone infection flusher according to claim 1, characterized in that: A battery (13) is installed inside the handheld portion (1), a cleaning switch button (11) is installed outside the handheld portion (1), and the battery (13), the cleaning switch button (11) and the linear motor (18) are connected by wires to form a loop.

7. The handheld ultrasonic oscillation pulse bone infection flusher according to claim 6, characterized in that: An ultrasonic switch button (10) is installed on the outer side of the handheld part (1), and the ultrasonic generator (14), the battery (13) and the ultrasonic switch button (10) are connected by electric wires to form a loop.

8. The handheld ultrasonic oscillation pulse bone infection flusher according to claim 1, characterized in that: The clean water spray pipe (3) and the sewage suction pipe (4) are arranged close to each other.

9. The handheld ultrasonic oscillation pulse bone infection flusher according to claim 1, characterized in that: The middle portion of the connecting rod (22) is rotatably connected to the handheld portion (1) via a rotating shaft (20).

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