Negative pressure drainage device for treating suppurative wounds

Abstract

The negative pressure drainage device comprises a drainage rod, a grab handle and a negative pressure box, a drainage head assembly is arranged in the lower portion of the front end of the drainage rod, and a gauze liquid suction assembly is arranged in the position, above the rear side of the drainage head assembly, of the drainage rod; the drainage head assembly comprises a rotary drum, a rotary joint and a negative pressure suction head; the gauze liquid absorption assembly comprises a gauze ejection cylinder, an ejection cylinder frame, an inclined rotating rod, an ejection rod, a push rod, a gauze supply cylinder and a gauze winding drum; the tail end of the drainage rod is rotationally mounted in the front end of the grab handle; the negative pressure box is provided with a plurality of negative pressure assemblies with the same structure and different negative pressures, the negative pressure box is provided with a liquid suction connecting pipe and a liquid drainage pipe, pus is sucked by switching different negative pressure suction heads, the negative pressure assemblies can adjust different negative pressures, are manually controlled and can stop at any time, the negative pressure precision is high, and for residual pus, the negative pressure box is convenient to use. The device is attached to the suppuration position to be wiped and adsorbed by jacking up the gauze, residual fester is removed, operation is easy, and cleaning is rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of wound suppuration drainage devices, in particular to a negative pressure drainage device for treating suppurative wounds. Background Art

[0002] During surgery, a drainage tube needs to be placed because there is blood, fluid or pus accumulated in the wound to drain the blood and fluid out of the body. Sometimes two drainage tubes need to be placed for drainage at the same time, or one tube for flushing and the other for drainage. Keeping the drainage tube unobstructed is one of the important measures to ensure the effect of surgical operations and reduce postoperative complications. Due to the different degrees of suppuration of the wound, the required negative pressure and the caliber and model of the negative pressure suction are also different. A single negative pressure suction of pus is not effective and there will be residue. The negative pressure of a general negative pressure device is controlled by a negative pressure pump. The negative pressure effect requires electronic control, and the control cannot be precise. The doctor's manual control effect is poor. For the pus remaining after the negative pressure, a simple adsorption treatment is performed, and it is necessary to use tweezers to clamp the gauze for absorption. The operation is cumbersome and requires temporary spare gauze. Moreover, the tweezers are also easy to damage the wound. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to propose a negative pressure drainage device for treating purulent wounds, which solves the problems of inaccurate controllability, poor adjustability, and inability to timely treat residual pus when suctioning pus with negative pressure.

[0004] According to the utility model, a negative pressure drainage device for treating purulent wounds comprises a drainage rod, a handle and a negative pressure box, a drainage head assembly is arranged below the front end of the drainage rod, and a gauze liquid absorption assembly is arranged above the rear side of the drainage head assembly on the drainage rod;

[0005] The drainage head assembly comprises a rotating drum, a rotating joint and a negative pressure suction head, four negative pressure suction heads with different suction ports are arranged around the middle position of the rotating drum, one end of the rotating drum is rotatably sleeved with a mounting block, the other end is rotatably connected with a rotating joint and a hose interface is arranged on the rotating joint, a gear plate is sleeved on the rotating drum, the drainage head assembly is installed in the installation cavity of the drainage rod and the two side walls of the installation cavity are provided with side baffles and the top wall is provided with a top baffle, a chain rotating rod is arranged on the drainage rod, a rotating shaft is arranged on the chain rotating rod and the rotating shaft is inserted into the drainage rod and sleeved with a driving gear plate and the driving gear plate and the gear plate are connected with a chain;

[0006] The gauze liquid absorption assembly comprises a gauze top cylinder, a top cylinder frame, an inclined rotating rod, a top rod, a push rod, a gauze supply cylinder and a gauze reel, the upper surface of the drainage rod is provided with a top cylinder frame cavity, the bottom end of the top cylinder frame is rotatably installed on the left side of the bottom of the top cylinder frame cavity, and the gauze top cylinder is installed on the top of the top cylinder frame, a gauze top cylinder groove is provided in the middle position of the bottom of the top cylinder frame cavity, and a gauze reel groove is provided on the right side wall, and the gauze on the gauze top cylinder passes through the gauze top cylinder and is then rolled onto the gauze reel. One end of the inclined rotating rod is rotatably installed on the upper side wall of the rotating shaft at the bottom end of the top cylinder frame, and the other end of the inclined rotating rod is rotatably connected to one end of the top rod, and the other end of the top rod is fixed at a side position of the bottom end of the push rod, and one end of the rotating shaft of the gauze reel extends to the outside of the drainage rod and is covered with a knob thereon;

[0007] The tail end of the drainage rod is rotatably mounted in the front end of the handle, a hose is arranged in the handle and the hose is inserted from the tail end of the drainage rod into the interior thereof and connected to the hose interface, and an external hose pipe is arranged at the tail end of the handle;

[0008] The negative pressure box is provided with a plurality of negative pressure components with the same structure but different negative pressure sizes. The negative pressure box is provided with a liquid suction pipe and a liquid discharge pipe. The liquid suction pipe is connected to the hose external pipe through a connecting long hose, and the liquid discharge pipe is provided with a manual valve.

[0009] In some embodiments of the utility model, a disassembly cover is provided on the upper surface of the drainage rod where the top baffle is located, and a top baffle plug hole is provided at the installation position of the disassembly cover, and the top baffle is plugged into the top wall position of the installation cavity from the top baffle plug hole.

[0010] In some other embodiments of the utility model, the gauze top tube groove and the gauze winding tube groove are provided with a mounting side cover on the other side wall of the drainage rod away from the knob.

[0011] In other embodiments of the utility model, the front end of the handle is provided with an active cavity, the tail end of the drainage rod is inserted into the active cavity, the front end of the handle and the tail end of the drainage rod are penetrated by a rotating rod bolt and a nut is sleeved on the rotating rod bolt.

[0012] In other embodiments of the utility model, the negative pressure assembly includes a piston cylinder, a piston, a pressure rod and a return spring. Exhaust pipes and negative pressure pipes are provided on both side walls of the piston cylinder. A gas buffer chamber is separated from the bottom of the piston cylinder by a breathable partition. An outward-opening one-way valve communicating with the gas buffer chamber is provided at the bottom of the exhaust pipe. An inward-opening one-way valve communicating with the bottom of the negative pressure pipe is provided in the gas buffer chamber. The top of the exhaust pipe is connected to an exhaust hole connected to the outside, the negative pressure pipe is connected to the inside of the negative pressure box, the bottom end of the pressure rod is fixed on the piston, and a return spring is sleeved between the top end of the pressure rod and the top wall of the negative pressure box.

[0013] In other embodiments of the present invention, the larger the inner diameter of the piston cylinder is, the greater the resilience of the corresponding return spring is.

[0014] In the utility model, for different degrees and types of suppuration, pus is sucked out by switching different negative pressure suction heads, and the negative pressure component can adjust different negative pressure sizes and is manually controlled and can be stopped at any time. It has strong controllability and high negative pressure accuracy. For residual pus, the gauze top tube is lifted to push the gauze out of the drainage rod, and the gauze is attached to the suppuration site for wiping and absorption to remove the residual pus. The operation is simple and the cleaning is quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 The utility model is a schematic structural diagram of a negative pressure drainage device for treating purulent wounds.

[0017] Figure 2 This is a schematic diagram of the side installation structure of the drainage head assembly proposed by the utility model.

[0018] Figure 3 This is a schematic cross-sectional structure diagram of the drainage head assembly proposed in the utility model.

[0019] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of the gauze liquid absorption component.

[0020] Figure 5 This is a schematic diagram of the installation position structure of the side cover proposed by the utility model.

[0021] Figure 6 This is a schematic cross-sectional structure diagram of the drainage rod provided by the utility model installed at the handle.

[0022] Figure 7 This is a schematic cross-sectional structure diagram of the negative pressure assembly proposed by the utility model.

[0023] In the figure: 1. drainage rod; 11. disassembly cover; 12. knob; 13. chain rotating rod; 14. push rod; 141. push rod; 2. negative pressure suction head; 21. rotating drum; 211. gear plate; 212. mounting block; 213. rotating joint; 214. hose interface; 22. side baffle; 23. top baffle; 3. top drum rack; 31. gauze top drum; 33. tilting rotating rod; 4. handle; 41. rotating rod bolt; 42. nut; 43. movable chamber; 5. connecting long hose; 6. negative pressure box; 7. pressure rod; 70. piston; 71. exhaust hole; 72. piston cylinder; 721. exhaust pipe; 722. negative pressure pipe; 73. gas buffer chamber; 731. inward-opening one-way valve; 732. outward-opening one-way valve; 8. return spring; 9. gauze top drum; 90. installing side cover; 91. gauze reel. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] Reference Figure 1-7 A negative pressure drainage device for treating suppurative wounds, comprising a drainage rod 1, a handle 4 and a negative pressure box 6, wherein a drainage head assembly is provided at the lower front end of the drainage rod 1, and a gauze liquid absorption assembly is provided at the upper rear side of the drainage head assembly of the drainage rod 1;

[0027] The drainage head assembly includes a rotating drum 21, a rotating joint 213 and a negative pressure suction head 2. Four negative pressure suction heads 2 with different liquid suction ports are arranged around the middle position of the rotating drum 21. One end of the rotating drum 21 is rotatably sleeved with a mounting block 212, and the other end is rotatably connected with a rotating joint 213, and a hose interface 214 is provided on the rotating joint 213. A gear plate 211 is sleeved on the rotating drum 21. The drainage head assembly is installed in the installation cavity of the drainage rod 1, and the two side walls of the installation cavity are provided with side baffles 22, and the top wall is provided with a top baffle 23. The drainage rod 1 is provided with a chain rotating rod 13, and the chain rotating rod 13 is provided with a rotating shaft, and the rotating shaft is inserted into the drainage rod 1 and sleeved with a driving gear plate, and the driving gear plate and the gear plate 211 are connected by a chain;

[0028] The gauze liquid absorption assembly comprises a gauze top cylinder 31, a top cylinder frame 3, an inclined rotating rod 33, a top rod 141, a push rod 14, a gauze supply cylinder 9 and a gauze reel 91. The upper surface of the drainage rod 1 is provided with a top cylinder frame cavity, the bottom end of the top cylinder frame is rotatably mounted on the left side of the bottom of the top cylinder frame cavity, and a gauze top cylinder 31 is installed on the top of the top cylinder frame 3. A gauze top cylinder groove is provided in the middle position of the bottom of the top cylinder frame cavity, and a gauze reel groove is provided on the right side wall. The gauze on the gauze top cylinder 31 passes through the gauze top cylinder 31 and is then rolled onto the gauze reel 91. One end of the inclined rotating rod 33 is rotatably mounted on the upper side wall of the rotating shaft at the bottom end of the top cylinder frame 3, and the other end of the inclined rotating rod 33 is rotatably connected to one end of the top rod 141. The other end of the top rod 141 is fixed at a side position at the bottom end of the push rod 14, and one end of the rotating shaft of the gauze reel 91 extends to the outside of the drainage rod 1 and is covered with a knob 12;

[0029] The tail end of the drainage rod 1 is rotatably mounted in the front end of the handle 4, a hose is provided in the handle 4 and the hose is inserted from the tail end of the drainage rod 1 into the interior thereof and connected to the hose interface 214, and an external hose pipe is provided at the tail end of the handle 4;

[0030] The negative pressure box 6 is provided with a plurality of negative pressure components with the same structure but different negative pressure sizes. The negative pressure box 6 is provided with a suction pipe and a discharge pipe 61. The suction pipe is connected to the hose external pipe through a connecting long hose 5. The discharge pipe 61 is provided with a manual valve.

[0031] Install the drainage head assembly from the bottom of the installation cavity, and fasten the two sides of the drainage rod 1 with bolts ( Figure 1 The reference numeral 20 is screwed in and fixed, which is convenient for later disassembly, cleaning or replacement. Before installation, the hose is first connected to the hose interface 214. When the pus is sucked by negative pressure, the chain rotating rod 13 is rotated to rotate the rotating drum 21 according to the amount and position of the pus, so as to realize the switching of the negative pressure suction head 2 downward. The other three will be blocked by the side baffles 22 and the top baffles 23, and it will not be breathable during negative pressure. Insert a downward negative pressure suction head 2 into the suppuration position to absorb the pus. During the absorption process, simply rinse with an independent flushing liquid, and then absorb the flushing liquid under negative pressure. For the residual flushing liquid and pus, push the push rod 14 to push out the gauze top cylinder 31, support the gauze, and stick the gauze to the pus position to absorb the pus. After the absorption is completed, put down the top cylinder frame 3, and turn the knob 12 to roll up the used gauze. When it is used again, it is pushed out and the unused gauze is pulled out and wrapped.

[0032] The angle between the tail end of the drainage rod 1 and the handle 4 is adjustable to adjust the optimal angle for easy operation.

[0033] After the negative pressure component is used, there will be negative pressure in the hose, which will suck the pus from the negative pressure suction head 2 into the hose and then into the negative pressure box 6.

[0034] A disassembly cover plate 11 is provided on the upper surface of the drainage rod 1 where the top baffle plate 23 is located. A top baffle plate plug hole is provided at the installation position of the disassembly cover plate 11. The top baffle plate 23 is plugged into the top wall position of the installation cavity from the top baffle plate plug hole.

[0035] The top baffle is inconvenient to install and disassemble, so the disassembly cover plate 11 is set and installed from the top. During disassembly, it is pushed down with a rod and installed and inserted from the top.

[0036] Described gauze top tube groove and gauze reel groove are provided with installation side cover 90 on the other sidewall away from knob 12 on drainage rod 1. Insert installation from the side and seal with installation side cover 90.

[0037] The front end of the handle 4 is provided with an active cavity 43, the tail end of the drainage rod 1 is inserted into the active cavity 43, the front end of the handle 4 and the tail end of the drainage rod 1 are penetrated by a rotating rod bolt 41, and a nut 42 is sleeved on the rotating rod bolt 41. The rotating bolt 41 is rotated to clamp and fix the tail end of the drainage rod 1.

[0038] The negative pressure assembly includes a piston cylinder 72, a piston 70, a pressure rod 7 and a return spring 8. An exhaust pipe 721 and a negative pressure pipe 722 are provided on the two side walls of the piston cylinder 72. A gas buffer chamber 73 is separated from the bottom of the piston cylinder 72 by a breathable partition. An outward-opening one-way valve 732 communicating with the gas buffer chamber 73 is provided at the bottom of the exhaust pipe 721. An inward-opening one-way valve 731 communicating with the bottom of the negative pressure pipe 722 is provided in the gas buffer chamber 73. The top of the exhaust pipe 721 is connected to an exhaust hole 71 connected to the outside, and the negative pressure pipe 722 is connected to the inside of the negative pressure box 6. The bottom end of the pressure rod 7 is fixed on the piston 70, and a return spring 8 is sleeved between the top end of the pressure rod 7 and the top wall of the negative pressure box 6.

[0039] Press the pressure rod 7 downward, the piston presses the gas in the piston cylinder 72 downward, the gas covers the outward-opening one-way valve 732, and the gas is discharged from the exhaust pipe 721, while the inward-opening one-way valve 731 is under pressure and blocks the negative pressure pipe 722. When the pressure rod 7 is released, the return spring 8 pushes the pressure rod 7 upward, the piston moves upward, and the gas enters the gas buffer chamber 73 from the negative pressure pipe 722 to open the inward-opening one-way valve 731, while the outward-opening one-way valve 732 is closed. At this time, the negative pressure in the negative pressure box 6 has a negative pressure liquid absorption effect. The three different negative pressure components have different negative pressure effects. Manually pressing the pressure rod 7 can slightly control its rebound speed.

[0040] The larger the inner diameter of the piston cylinder 72 is, the greater the corresponding resilience of the rebound spring 8 is. The negative pressure size is selected according to needs.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A negative pressure drainage device for treating suppurative wounds, characterized in that: It comprises a drainage rod (1), a handle (4) and a negative pressure box (6); a drainage head assembly is provided below the front end of the drainage rod (1); and a gauze liquid absorption assembly is provided above the rear side of the drainage head assembly of the drainage rod (1); The drainage head assembly comprises a rotating drum (21), a rotating joint (213) and a negative pressure suction head (2); four negative pressure suction heads (2) with different suction ports are arranged around the middle of the rotating drum (21); one end of the rotating drum (21) is rotatably sleeved with a mounting block (212); the other end is rotatably connected to a rotating joint (213); and a hose interface (214) is arranged on the rotating joint (213); a gear plate (211) is sleeved on the rotating drum (21); the drainage head assembly is installed in the installation cavity of the drainage rod (1); side baffles (22) are arranged on both side walls of the installation cavity, and a top baffle (23) is arranged on the top wall; a chain rotating rod (13) is arranged on the drainage rod (1); a rotating shaft is arranged on the chain rotating rod (13); the rotating shaft is inserted into the drainage rod (1) and sleeved with a driving gear plate; and the driving gear plate and the gear plate (211) are connected by a chain; The gauze liquid absorption assembly comprises a gauze top cylinder (31), a top cylinder frame (3), an inclined rotating rod (33), a top rod (141), a push rod (14), a gauze supply cylinder (9) and a gauze reel (91), wherein the upper surface of the drainage rod (1) is provided with a top cylinder frame cavity, the bottom end of the top cylinder frame is rotatably mounted on the left side of the bottom of the top cylinder frame cavity, the top of the top cylinder frame (3) is provided with a gauze top cylinder (31), the middle position of the bottom of the top cylinder frame cavity is provided with a gauze top cylinder groove, the right side wall is provided with a gauze reel groove, and the gauze top cylinder (31) is provided with a gauze reel groove. The gauze on the cylinder (31) passes through the gauze top cylinder (31) and is then rolled onto the gauze reel (91); one end of the inclined rotating rod (33) is rotatably mounted on the upper side wall of the rotating shaft at the bottom end of the top cylinder frame (3); the other end of the inclined rotating rod (33) is rotatably connected to one end of the top rod (141); the other end of the top rod (141) is fixed to a position on one side of the bottom end of the push rod (14); one end of the rotating shaft of the gauze reel (91) extends to the outside of the drainage rod (1) and is covered with a knob (12); The tail end of the drainage rod (1) is rotatably mounted inside the front end of the handle (4); a hose is provided inside the handle (4) and the hose is inserted from the tail end of the drainage rod (1) into the interior thereof and connected to the hose interface (214); and an external hose pipe is provided at the tail end of the handle (4); The negative pressure box (6) is provided with a plurality of negative pressure components having the same structure but different negative pressures. The negative pressure box (6) is provided with a liquid suction pipe and a liquid discharge pipe (61). The liquid suction pipe is connected to the hose external pipe via a connecting long hose (5). The liquid discharge pipe (61) is provided with a manual valve.

2. The negative pressure drainage device for treating suppurative wounds according to claim 1, characterized in that: A disassembly cover plate (11) is provided on the upper surface of the drainage rod (1) where the top baffle plate (23) is located, a top baffle plate plug hole is provided at the installation position of the disassembly cover plate (11), and the top baffle plate (23) is inserted from the top baffle plate plug hole to the top wall position of the installation cavity.

3. The negative pressure drainage device for treating suppurative wounds according to claim 1, characterized in that: The gauze top tube groove and the gauze winding tube groove are provided with a mounting side cover (90) on the other side wall of the drainage rod (1) away from the knob (12).

4. The negative pressure drainage device for treating suppurative wounds according to claim 1, characterized in that: The front end of the handle (4) is provided with a movable cavity (43), and the rear end of the drainage rod (1) is inserted into the movable cavity (43). The front end of the handle (4) and the rear end of the drainage rod (1) are penetrated by a rotating rod bolt (41), and a nut (42) is sleeved on the rotating rod bolt (41).

5. The negative pressure drainage device for treating suppurative wounds according to claim 1, characterized in that: The negative pressure assembly comprises a piston cylinder (72), a piston (70), a pressure rod (7) and a return spring (8). An exhaust pipe (721) and a negative pressure pipe (722) are provided on both side walls of the piston cylinder (72). A gas buffer chamber (73) is separated at the bottom of the piston cylinder (72) by a breathable partition. An outward-opening one-way valve (732) communicating with the gas buffer chamber (73) is provided at the bottom end of the exhaust pipe (721). An inward-opening one-way valve (731) communicating with the bottom end of the negative pressure pipe (722) is provided in the gas buffer chamber (73). The top of the exhaust pipe (721) is connected to an exhaust hole (71) connected to the outside. The negative pressure pipe (722) is connected to the inside of the negative pressure box (6). The bottom end of the pressure rod (7) is fixed on the piston (70). A return spring (8) is sleeved between the top end of the pressure rod (7) and the top wall of the negative pressure box (6).

6. A negative pressure drainage device for treating suppurative wounds according to claim 5, characterized in that: The larger the inner diameter of the piston cylinder (72), the greater the corresponding rebound force of the rebound spring (8).

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