An oral and maxillofacial surgery interstitial infection abscess incision and drainage with guide tube

Abstract

The application provides an oral and maxillofacial surgery gap infection abscess incision drainage tube, which comprises a tube shell, a tray, a ring-shaped air tank, an expansion mechanism and a drainage mechanism, the expansion mechanism comprises an air pipe, an air bag and a pressure plate, and the drainage mechanism comprises a drainage tube, a storage bag, an air pump and a telescopic block. By pressing the pressing plate of the pressure plate with the thumb, the pressure plate and the piston are driven to move together, the downward movement of the piston extrudes the air in the ring-shaped air tank, the extruded air enters the air bag through the air pipe, the air bag and the sponge block jointly clamp and limit the skin around the incision, so that the skin around the incision is not easy to further crack during the process of pus suction, and the damage of the skin of the patient is reduced; the pus can be sucked away through the negative pressure drainage mechanism.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space. Background Technology

[0002] Facial abscesses occur when inflamed tissue dissolves and dies under the action of bacterial toxins and enzymes, eventually forming an abscess cavity on the face. The cavity contains necrotic tissue, exuding cytokines and bacteria, thus forming pus. During the surgical procedure, medical staff first need to locate the abscess, then make an incision at the location with a scalpel, and then use hemostatic forceps to open the incision. Finally, while the hemostatic forceps are open, a drainage tube is placed at the incision to drain the pus.

[0003] During surgery, using existing drainage tubes for drainage is quite cumbersome and requires medical staff to coordinate with both hands simultaneously. One hand uses clamps to hold and restrict the skin around the patient's incision, while the other hand holds the drainage tube to aspirate the pus. This is not only cumbersome but may also cause discomfort to the patient, potentially leading to pus overflowing from the wound and tearing when the wound is repeatedly opened. In addition, the pus inside the abscess can easily flow around the incision, making it difficult to aspirate the drained pus. Furthermore, the pus can stick to the skin around the incision and solidify at the incision site, making it difficult to remove the drainage tube and causing pulling on the skin around the incision, resulting in secondary damage. Summary of the Invention

[0004] To overcome the shortcomings of existing drainage tubes, such as the inconvenience of tearing the incision, difficulty in aspirating pus, and difficulty in removing the drainage tube, this invention provides a drainage tube for incision and drainage of infected abscesses in oral and maxillofacial surgical spaces. This tube can clamp and limit the epidermis around the patient's incision, concentrate the pus in the abscess in the center, better prevent the pus from solidifying at the incision site, facilitate better aspiration of pus, and reduce pulling on the patient's wound.

[0005] A drainage tube for incision and drainage of infected abscesses in oral and maxillofacial surgical spaces, wherein the drainage tube for incision and drainage of infected abscesses in oral and maxillofacial surgical spaces is provided with:

[0006] The tube shell has an axial push plate groove on its side wall;

[0007] The tray is fixedly installed on the lower part of the inner wall of the tube shell;

[0008] An annular gas cylinder is fixedly installed inside the casing and located on the upper part of the tray;

[0009] An expansion mechanism is provided, comprising an air tube, an air bladder, and a pressure plate. The air tube coaxially passes through an annular gas tank and a tray. An air bladder located below the tray is connected to the bottom of the air tube. The pressure plate is an annular shape with inner and outer diameters that are axially sliding and sealingly fitted with the air tube and the annular gas tank, respectively. A pressing plate extending to the outside of the tube shell is fixedly connected to the pressure plate. The pressing plate is slidably fitted with a pressing plate groove. An air inlet is provided on the side wall of the air tube between the bottom plate of the annular gas tank and the pressure plate.

[0010] The drainage mechanism includes a drainage tube, a storage bladder, an air pump, and a telescopic block. Both ends of the drainage tube pass through the air pump, and the bottom end of the drainage tube passes through and is exposed at the bottom of the air bladder. The top of the drainage tube is connected to the storage bladder located above the annular air tank. The storage bladder is connected to the air pump and a one-way tube. The air pump is connected to the telescopic block, which is radially slidable inside the annular air tank. The telescopic block is driven to slide radially by an axially sliding pressure plate. The end of the one-way tube extends to the outside of the tube shell.

[0011] Furthermore, the inner wall of the annular gas tank is provided with an annular plate, which is located between the pressure plate and the bottom plate of the annular gas tank, and the air inlet is located between the bottom plate of the annular gas tank and the annular plate.

[0012] The expansion mechanism also includes a piston plate located between the annular plate and the pressure plate. The piston plate slides and seals against the inner wall of the annular gas tank. A first return spring sleeved on the blast pipe is connected between the piston plate and the pressure plate.

[0013] Furthermore, the drainage mechanism is provided with at least two opposing wedge-shaped telescopic blocks, and the side wall of the annular gas tank is provided with multiple through holes for the telescopic blocks to slide. The upper and lower surfaces of the telescopic blocks near the inside of the annular gas tank are both inclined surfaces, and the other end is slidably engaged with a fixed block fixed to the inner wall of the tube shell. A second return spring is connected between the telescopic block and the fixed block.

[0014] An air-blowing plate is fixedly connected to each side of the air-blowing cylinder. The air-blowing plate is connected to two opposing telescopic blocks through a pressing block.

[0015] Furthermore, it also includes a pressing mechanism, which is mounted on the tray and connected to the drainage mechanism. The pressing mechanism includes an upper rack block, a pinion, a fixing frame, a lower rack block, and a pressing rod.

[0016] The lower end of the telescopic block is fixedly connected to an upper rack block, and the upper end of the tray is fixedly connected to an annular fixing frame. Multiple small gears are rotatably connected to the fixing frame. The lower rack block is radially slidably connected to the tray. Both the lower rack block and the upper rack block mesh with the small gears. The lower end of the lower rack block is fixedly connected to a pressing rod located at the bottom of the tray.

[0017] Furthermore, it also includes an anti-curing mechanism, which is located on the inner wall of the tube shell and connected to the pressing mechanism. The anti-curing mechanism includes a guide plate and a flexible hose.

[0018] The guide plate is coaxially and rotatably connected to the lower part of the inner wall of the tube shell. The guide plate is located below the tray. Multiple arc-shaped guide grooves are opened on the guide plate along the circumference. Each pressing rod passes through one arc-shaped guide groove of the guide plate and drives the guide plate to rotate.

[0019] The inlet pipe located below the annular gas tank is connected to multiple hoses, each hose is fixedly connected to the guide plate, and each hose passes through the air inlet pipe, the tray and the guide plate in sequence.

[0020] Furthermore, a sponge block is fixedly connected to the lower part of the outer wall of the air tube, located between the tray and the air bladder, and a guide plate is located between the tray and the sponge block.

[0021] Furthermore, it also includes a heating wire, which is spirally connected to the inner wall of the lower part of the tube shell.

[0022] Furthermore, the lower end face of the tube shell is provided with an annular groove, and several sets of extrusion devices are installed in the annular groove. Each set of extrusion devices includes a fixed rod, a push rod, and a torsion spring.

[0023] The fixing rod is fixedly installed in the annular groove. The fixing rod consists of a middle column and two end blocks. A stop bar is provided on the side of the middle column near the outer wall of the tube shell. One end of the push rod is provided with a collar that is rotatably sleeved on the middle column. The other end of the push rod is provided with a ball head. A torsion spring is fixedly connected between the collar and the stop block at one end of the middle column.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. This invention uses the thumb to press the pressure plate of the pressure plate, which drives the pressure plate and piston to move together. The downward movement of the piston compresses the air in the annular air canister. The compressed air enters the air bladder through the air tube, causing the air bladder to inflate. When the piston contacts the annular plate of the annular air canister, the piston stops moving, and the air bladder contacts the inside of the incision epidermis. This allows the air bladder and the sponge block to clamp and limit the epidermis around the patient's incision, thus preventing further tearing of the epidermis around the incision during pus aspiration and reducing damage to the patient's epidermis.

[0026] 2. The present invention uses a reciprocating sliding pressure plate to drive the telescopic block to extend and retract radially, and the telescopic block reciprocates to drive the air cylinder to inflate and vent air, continuously drawing pus into the storage sac and discharging the pus in the storage sac through a one-way tube.

[0027] 3. In this invention, the upper toothed block fixed to it moves through the drainage mechanism. The movement of the upper toothed block drives the small gear to rotate, which in turn drives the lower toothed block to move. The movement of the lower toothed block drives the pressing rod fixed to it to move, so that the four pressing rods move towards each other, thereby squeezing the abscess epidermis and causing the pus in the abscess to move from the periphery to the center. This concentrates the pus in the center of the abscess, allowing the drainage tube to better absorb the pus.

[0028] 4. The present invention uses a pressing mechanism to drive the guide plate to rotate. The rotation of the guide plate drives the four tubing to rotate around the sponge block together. Thus, when the drainage tube draws out pus, the four tubing simultaneously draw out the pus flowing out of the incision, which better prevents the pus from solidifying at the incision site, making it difficult to pull out the drainage tube, thereby reducing the discomfort caused to the patient by pulling the wound. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0031] Figure 2 This is a partial cross-sectional perspective view of the three-dimensional structure of the present invention.

[0032] Figure 3 For the present invention Figure 2 A magnified three-dimensional structural diagram at point A in the middle.

[0033] Figure 4 This is a schematic diagram of a second partial cross-sectional three-dimensional structure of the present invention.

[0034] Figure 5 For the present invention Figure 4 A magnified three-dimensional structural diagram at point B.

[0035] Figure 6 This is a schematic diagram of the third partial cross-sectional three-dimensional structure of the present invention.

[0036] Figure 7 This is a partially disassembled three-dimensional structural diagram of the expansion mechanism, drainage mechanism, and pressing mechanism of the present invention.

[0037] Figure 8 This is a three-dimensional structural diagram of the fixing rod, push rod, and torsion spring of the present invention.

[0038] Figure 9This is a schematic diagram of the fourth partial cross-sectional three-dimensional structure of the present invention.

[0039] Figure 10 This is a partial cross-sectional perspective view of the three-dimensional structure of the present invention.

[0040] Explanation of reference numerals in the attached drawings: 1-Tube shell, 2-Tray, 3-Blower tube, 301-Sponge block, 302-Airbag, 4-Inlet tube, 401-Storage bladder, 402-One-way tube, 5-Blower cylinder, 501-Blower plate, 61-Annular air tank, 62-Piston plate, 63-Pressure plate, 64-First return spring, 71-Fixing block, 72-Telescopic block, 73-Second return spring, 74-Pressing block, 81-Upper rack block, 82-Fixing frame, 83-Pin gear, 84-Lower rack block, 85-Pressing rod, 91-Guide plate, 92-Hose, 101-Heating wire, 111-Fixing rod, 112-Push rod, 113-Torsion spring. Detailed Implementation

[0041] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.

[0042] To fully understand this invention, detailed steps and structures will be presented in the following description to illustrate the technical solution of this invention. Preferred embodiments of the invention are described in detail below; however, in addition to these detailed descriptions, the invention may have other embodiments.

[0043] Example 1:

[0044] This embodiment 1 provides a drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space, such as... Figures 1-10 As shown, it includes a shell 1, a tray 2, an annular gas tank 61, an expansion mechanism, and a diversion mechanism.

[0045] The casing 1 is a cylindrical shape with an opening at the bottom and a closed top, and an axial sliding groove for the push plate is provided on the side wall of the casing 1. The tray 2 is fixedly installed on the lower part of the inner wall of the casing 1. The annular gas cylinder 61 is fixedly installed inside the casing 1 and located above the tray 2. The annular gas cylinder 61 is used to store gas.

[0046] The expansion mechanism includes an air tube 3, an air bladder 302, and a pressure plate 63. The air tube 3 coaxially passes through an annular air tank 61 and a tray 2. The top of the air tube 3 is closed, and the bottom is connected to the air bladder 302 located below the tray 2. The air bladder 302 is used for internal positioning of the abscess incision. The pressure plate 63 is annular, with its inner and outer diameters respectively sliding and sealingly engaging with the air tube 3 and the annular air tank 61 axially. The pressure plate 63 is fixedly connected to a pressing plate extending outside the tube shell 1, which slides in engagement with a pressing plate groove. An air inlet is provided on the side wall of the air tube 3, located between the bottom plate of the annular air tank 61 and the pressure plate 63. A sponge block 301 is fixedly connected to the lower part of the outer wall of the air tube 3, located between the tray 2 and the air bladder 302. The sponge block 301 is used for external positioning of the abscess incision.

[0047] The inner wall of the annular gas tank 61 is provided with an annular plate, such as Figure 2 As shown, the annular plate is located between the pressure plate 63 and the bottom plate of the annular gas tank 61, and the air inlet of the air blower pipe 3 is located between the bottom plate of the annular gas tank 61 and the annular plate. A piston plate 62 is slidably disposed within the annular gas tank 61, located between the annular plate and the pressure plate 63. The annular plate serves to limit the movement of the piston plate 62. A first return spring 64 is fitted onto the air blower pipe 3 between the piston plate 62 and the pressure plate 63. A vertical slide rail is provided on the piston plate 62, and the pressure plate 63 is slidably connected to the slide rail of the piston plate 62. The annular gas tank 61 and the piston plate 62 form a sealed cavity. The piston plate 62 is used to compress the gas inside the annular gas tank 61 and inflate the air bladder 302 through the air inlet.

[0048] The drainage mechanism includes a drainage tube 4, a storage bladder 401, an air pump 5, and a telescopic block 72. The drainage tube 4 is used to aspirate pus. Both ends of the drainage tube 4 pass through the air pump 3, and the top of the air pump 3 is sealed. The bottom end of the drainage tube 4 passes through and is exposed at the bottom of the air bladder 302. The top of the drainage tube 4 is connected to the storage bladder 401, which is located above the annular air tank 61. The storage bladder 401 is used to store the aspirated pus. The storage bladder 401 is connected to the air pump 5 and the one-way tube 402. The air pump 5 is connected to the telescopic block 72. The telescopic block 72 passes through the annular air tank 61 and is driven to slide radially by an axially sliding pressure plate 63. The end of the one-way tube 402 extends outside the tube shell 1 to drain pus. A piston plate 62 is located between the telescopic block 72 and the annular plate.

[0049] In an optional embodiment, the drainage mechanism is provided with four wedge-shaped telescopic blocks 72, and correspondingly, the sidewall of the annular gas tank 61 has four through holes for the radial extension and retraction of the telescopic blocks 72. Figure 2 and Figure 3As shown, the telescopic block 72 is a triangular block, with both the upper and lower surfaces near the axis of the annular gas tank 61 being inclined surfaces. Each telescopic block 72 is equipped with a fixing block 71, and the four fixing blocks 71 are fixedly connected to the middle of the inner wall of the tube shell 1. Each fixing block 71 is provided with a guide rod, and the telescopic block 72 slides in cooperation with the guide rod in the radial direction of the annular gas tank 61. A second return spring 73 is connected between each fixing block 71 and each telescopic block 72.

[0050] like Figure 4 As shown, an air-blowing plate 501 is fixedly connected to each side of the air-blowing cylinder 5. The air-blowing plate 501 is connected to two opposing telescopic blocks 72 via a pressing block 74. One end of a pressing block 74 is fixedly connected to the upper end of each of the two telescopic blocks 72, and the other end of the pressing block 74 is fixedly connected to the air-blowing plate 501. When the two telescopic blocks 72 slide radially, they drive the air-blowing plate 501 to move, thus enabling the air-blowing cylinder 5 to draw in and exhaust air.

[0051] During the surgical procedure, medical staff first make a small incision on the abscess on the patient's face with a scalpel. Then, holding the outer wall of the tube shell 1, they slowly insert the lower end of the intubation tube 4 and the balloon 302 of the inflator tube 3 into the abscess, ensuring that the sponge block 301 above the balloon 302 adheres to the incision surface. After insertion, the medical staff press the push plate of the pressure plate 63 with their thumb, causing the pressure plate 63 to move downwards. This causes the pressure plate 63 to move the piston plate 62 downwards as well. The downward movement of the piston plate 62 squeezes... The compressed air inside the annular air canister 61 is forced through the air inflator 3 into the air bladder 302, causing it to inflate. When the piston plate 62 contacts the annular plate of the annular air canister 61, the piston plate 62 stops moving, and the air bladder 302 contacts the inside of the incision skin. This allows the air bladder 302 and the sponge block 301 to jointly clamp and limit the skin around the patient's incision, thus preventing further tearing of the skin around the incision during pus aspiration and reducing damage to the patient's skin.

[0052] The pressure plate 63 continues to move downwards, squeezing the four telescopic blocks 72, causing them to move away from each other. Two of the telescopic blocks 72 drive the pressing blocks 74, which are fixed to them, to move away from each other. The two pressing blocks 74 then cause the two air-blowing plates 501 of the air cylinder 5 to unfold, creating a negative pressure inside the air cylinder 5. Under this negative pressure, the pus is drawn into the storage sac 401 through the drainage tube 4. This allows the pus inside the abscess on the patient's face to be suctioned out.

[0053] After the pus is aspirated, the medical staff lifts the pressure plate 63 and moves it upward. The upward movement of the pressure plate 63 disengages from the four telescopic blocks 72, causing the second return spring 73 to extend and move the telescopic blocks 72 toward each other. Two of the telescopic blocks 72 move the pressing blocks 74 fixed to them toward each other. The two pressing blocks 74 cause the two air-blowing plates 501 of the air-blowing cylinder 5 to contract, increasing the internal pressure of the air-blowing cylinder 5. Under the pressure, the pus is discharged from the storage sac 401 through the one-way tube 402 to the outside of the tube shell 1.

[0054] After the pus has drained, the medical staff continue to lift the pressure plate 63 upwards, causing the first reset spring 64 to extend and reset. The medical staff then continue to lift the pressure plate 63 upwards, causing the pressure plate 63 to drive the piston plate 62 upwards as well. The upward movement of the piston plate 62 creates a negative pressure inside the annular gas canister 61. Under the action of the negative pressure, the gas in the air bladder 302 is drawn into the annular gas canister 61 through the air tube 3, thereby deflating the air bladder 302. Then, the drainage tube 4 can be slowly withdrawn from the abscess incision, thus completing the surgery.

[0055] Example 2:

[0056] Based on Example 1, such as Figures 2-7 As shown, it also includes a pressing mechanism, which is located on the tray 2. The pressing mechanism is used to concentrate the pus in the abscess in the middle position, and the pressing mechanism is connected to the drainage mechanism. The pressing mechanism includes an upper rack block 81, a pinion 83, a fixing frame 82, a lower rack block 84, and a pressing rod 85. The lower end of the telescopic block 72 is fixedly connected to the upper rack block 81, and the upper end of the tray 2 is fixedly connected to the annular fixing frame 82. Four pinions 83 are rotatably connected to the fixing frame 82. The pinions 83 mesh with the upper rack block 81. The lower rack block 84 is slidably connected to the tray 2 and meshes with the pinions 83. The lower end of the lower rack block 84 is fixedly connected to the pressing rod 85, which is used to push the pus in the abscess to gather in the middle.

[0057] When the four telescopic blocks 72 move away from each other, they cause the upper rack block 81, which is fixed to them, to move away from each other. The movement of the upper rack block 81 causes the pinion 83 to rotate, which in turn causes the lower rack block 84 to move. The movement of the lower rack block 84 causes the pressing rod 85, which is fixed to it, to move. This causes the four pressing rods 85 to move closer to each other, thereby squeezing the abscess epidermis and causing the pus inside the abscess to move from the periphery to the center. This concentrates the pus in the center, allowing the drainage tube 4 to better absorb the pus. After the first abscess is absorbed, the four telescopic blocks 72 move closer to each other, causing the upper rack block 81, which is fixed to them, to move closer to each other. The movement of the upper rack block 81 causes the pinion 83 to rotate, which in turn causes the lower rack block 84 to move. The movement of the lower rack block 84 causes the pressing rod 85, which is fixed to it, to move away from each other.

[0058] Example 3:

[0059] Based on Example 2, such as Figures 6-10 As shown, it also includes an anti-curing mechanism, which is located on the inner wall of the tube shell 1. The anti-curing mechanism is used to reduce pus residue at the incision site. It includes a guide plate 91 and a hose 92. The guide plate 91 is rotatably connected to the lower part of the inner wall of the tube shell 1 and is located between the tray 2 and the sponge block 301. The guide plate 91 has four arc-shaped guide grooves. Each pressing rod 85 passes through one arc-shaped guide groove of the guide plate 91. The lower part of the inlet tube 4 is fixedly connected to four hoses 92. Each hose 92 is fixedly connected to the guide plate 91. Each hose 92 passes through the air tube 3, the tray 2 and the guide plate 91 in sequence. The hose 92 is located below the annular air tank 61. The hose 92 is used to absorb the pus overflowing from the incision site.

[0060] When the four lower rack blocks 84 move away from each other, they will drive the guide plate 91 to rotate. The rotation of the guide plate 91 will drive the four tubing tubes 92 to rotate around the sponge block 301. Thus, when the drainage tube 4 aspirates pus, the four tubing tubes 92 will simultaneously aspirate the pus flowing from the incision, reducing pus residue at the incision and better preventing pus from solidifying at the incision, making the drainage tube 4 difficult to remove. This will reduce the discomfort caused to the patient by pulling on the wound. Then, the four lower rack blocks 84 move away from each other, simultaneously driving the guide plate 91 to rotate. The rotation of the guide plate 91 will drive the four tubing tubes 92 to rotate together, so that all the tubing tubes 92 are reset.

[0061] Example 4:

[0062] Based on Example 3, such as Figure 6 As shown, it also includes a heating wire 101, which is fixedly connected to the lower inner wall of the tube shell 1. The heating wire 101 is used to reduce the solidification of pus and blood streaks.

[0063] Medical staff activate the heating wire 101, which heats the pus and blood inside the drainage tube 4, thereby reducing the solidification of the pus and blood and reducing the amount of pus and blood adhering to the drainage tube 4, so that the pus and blood can be discharged from the drainage tube 4 more effectively.

[0064] Example 5

[0065] Based on Example 4, such as Figure 1 , Figure 6 and Figure 8 As shown, it also includes a fixing rod 111, a push rod 112, and a torsion spring 113. The bottom of the tube shell 1 has an annular groove, and several fixing rods 111 are fixedly connected in the annular groove at the bottom of the tube shell 1. Each fixing rod 111 has a stop bar on the side near the outer wall of the tube shell 1. A push rod 112 is rotatably connected to the middle of each fixing rod 111, and each push rod 112 is tilted at 30 degrees towards the side near the inner wall of the tube shell 1. The push rod 112 is used to squeeze the surrounding healthy skin abscess to make it more prominent. A torsion spring 113 is connected between one side of each fixing rod 111 and each push rod 112.

[0066] When the bottom of the tube shell 1 is placed against the healthy skin next to the abscess on the patient's face, it will cause the push rod 112 at the bottom of the tube shell 1 to rotate towards the center, which will compress the healthy skin around the abscess, causing the skin to gather towards the abscess incision, making the abscess more prominent, and allowing the pus to be absorbed better. After the pus is absorbed, the medical staff will slowly pull out the drainage tube 4, which will move the tube shell 1, causing the push rod 112 to separate from the skin. The torsion spring 113 will drive the push rod 112 to return to its original position, so that the skin around the abscess is no longer compressed, thus completing the surgery.

[0067] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A drainage tube for incision and drainage of infected abscesses in oral and maxillofacial surgical spaces, characterized in that, The drainage tube used for incision and drainage of infected abscesses in the oral and maxillofacial surgical space is equipped with: The tube shell (1) has an axial push plate groove on its side wall; The tray (2) is fixedly installed on the lower part of the inner wall of the tube shell (1); An annular gas cylinder (61) is fixedly installed inside the casing (1) and located on the upper part of the tray (2); The expansion mechanism includes an air tube (3), an air bladder (302), and a pressure plate (63). The air tube (3) passes coaxially through the annular air tank (61) and the tray (2). The bottom of the air tube (3) is connected to the air bladder (302) located below the tray (2). The pressure plate (63) is an annular shape with inner and outer diameters that are axially sliding and sealingly fitted with the air tube (3) and the annular air tank (61), respectively. The pressure plate (63) is fixedly connected to a pressing plate extending outside the tube shell (1). The pressing plate is slidably fitted with the pressing plate groove. An air inlet is provided on the side wall of the air tube (3) between the bottom plate of the annular air tank (61) and the pressure plate (63). The drainage mechanism includes a drain tube (4), a storage bladder (401), an air pump (5), and a telescopic block (72). The drain tube (4) passes through the air pump (3) at both ends and the bottom end of the drain tube (4) passes through and is exposed at the bottom of the air bladder (302). The top of the drain tube (4) is connected to the storage bladder (401) located above the annular gas tank (61). The storage bladder (401) is connected to the air pump (5) and the one-way tube (402). An air pump plate (501) is fixedly connected to each side of the air pump (5). The air pump plate (501) is connected to two opposing telescopic blocks (72) through a pressing block (74). The telescopic blocks (72) are radially slidable inside the annular gas tank (61). The telescopic blocks (72) are driven to slide radially by the axially sliding pressure plate (63). The end of the one-way tube (402) extends to the outside of the tube shell (1).

2. The drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space as described in claim 1, characterized in that, The inner wall of the annular gas tank (61) is provided with an annular plate, which is located between the pressure plate (63) and the bottom plate of the annular gas tank (61), and the air inlet is located between the bottom plate of the annular gas tank (61) and the annular plate. The expansion mechanism also includes a piston plate (62) located between the annular plate and the pressure plate (63). The piston plate (62) is in sliding sealing fit with the inner wall of the annular gas tank (61). A first return spring (64) is connected between the piston plate (62) and the pressure plate (63).

3. The drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space as described in claim 1, characterized in that, The drainage mechanism is provided with at least two opposing wedge-shaped telescopic blocks (72). The side wall of the annular gas tank (61) is provided with multiple through holes for the telescopic blocks (72) to slide. The upper and lower surfaces of the telescopic blocks (72) near the inside of the annular gas tank (61) are both inclined surfaces. The other end is slidably engaged with the fixed block (71) fixed on the inner wall of the tube shell (1). A second return spring (73) is connected between the telescopic blocks (72) and the fixed block (71).

4. The drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space as described in claim 3, characterized in that, It also includes a pressing mechanism, which is located on the tray (2) and connected to the drainage mechanism. The pressing mechanism includes an upper rack block (81), a pinion (83), a fixing frame (82), a lower rack block (84), and a pressing rod (85). The lower end of the telescopic block (72) is fixedly connected to the upper rack block (81), the upper end of the tray (2) is fixedly connected to the ring fixing frame (82), and multiple small gears (83) are rotatably connected to the fixing frame (82). The lower rack block (84) is radially slidably connected to the tray (2). The lower rack block (84) and the upper rack block (81) are both meshed with the small gears (83). The lower end of the lower rack block (84) is fixedly connected to the pressing rod (85) located at the bottom of the tray (2).

5. The drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space as described in claim 4, characterized in that, It also includes an anti-curing mechanism, which is located on the inner wall of the tube shell (1) and is connected to the pressing mechanism. The anti-curing mechanism includes a guide plate (91) and a hose (92). The guide plate (91) is coaxially and rotatably connected to the lower part of the inner wall of the tube shell (1). The guide plate (91) is located below the tray (2). Multiple arc-shaped guide grooves are opened on the guide plate (91) along the circumference. Each pressing rod (85) passes through one arc-shaped guide groove of the guide plate (91) and the pressing rod (85) drives the guide plate (91) to rotate. The inlet pipe (4) located below the annular gas tank (61) is connected to multiple hoses (92), each hose (92) is fixedly connected to the guide plate (91), and each hose (92) passes through the air inlet pipe (3), the tray (2) and the guide plate (91) in sequence.

6. The drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space as described in claim 5, characterized in that, The lower part of the outer wall of the air tube (3) is fixedly connected to a sponge block (301) located between the tray (2) and the air bag (302), and the guide plate (91) is located between the tray (2) and the sponge block (301).

7. The drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space as described in claim 1, characterized in that, It also includes a heating wire (101), which is spirally connected to the lower inner wall of the tube shell (1).

8. The drainage tube for incision and drainage of an infected abscess in the oral and maxillofacial surgical space as described in claim 1, characterized in that, The lower end face of the tube shell (1) is provided with an annular groove, and several sets of extrusion devices are installed in the annular groove. Each set of extrusion devices includes a fixed rod (111), a push rod (112) and a torsion spring (113). The fixing rod (111) is fixedly installed in the annular groove. The fixing rod (111) consists of a middle column and two end blocks. A stop bar is provided on the side of the middle column near the outer wall of the tube shell (1). One end of the push rod (112) is provided with a collar that is rotatably sleeved on the middle column. The other end of the push rod (112) is provided with a ball head. A torsion spring (113) is fixedly connected between the collar and the stop block at one end of the middle column.

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