CN219290274U - A negative pressure diverter - Google Patents

Abstract

The utility model discloses a negative pressure drainage device, which belongs to the technical field of effusion drainage devices, and comprises a container with a hollow tubular structure, wherein sealing plates are fixedly arranged at two ends of the container, a drainage tube communicated with an inner cavity of the container is arranged at the outer side of one sealing plate, a through hole is arranged on the other sealing plate, a knob is rotatably connected to the container, and a rotation limiting mechanism which enables the knob to rotate only in one direction relative to the container is arranged between the knob and the container; the container is internally provided with a piston which can only slide along the length direction of the container and is always attached to the inner wall of the container, a screw rod which penetrates through the through hole and is in threaded connection with the knob is fixedly connected to the piston, and when the knob rotates on the container in a unidirectional mode, the screw rod drives the piston to slide towards one side opposite to the drainage tube. The utility model has the advantages of small volume, portability, no reflux phenomenon, reduced infection risk, simple and convenient operation and safety.

Description

A negative pressure diverter

technical field

The utility model belongs to the technical field of effusion drainage devices, in particular to a negative pressure drainage device.

Background technique

After the modified radical mastectomy for breast cancer, it is necessary to use various negative pressure drainage devices, drainage balls or negative pressure drainage devices to ensure the complete drainage of fluid and blood in the postoperative wound and promote tissue healing. However, in clinical work, it was found that due to the abundant lymphatic return around the mammary gland and the damage of the lymphatic return line caused by surgical trauma, patients still often have subcutaneous fluid after the wound heals and go home, and they need to go back to the hospital to suck the fluid. If there is persistent lymphatic effusion, the doctor will generally place an indwelling needle in the place where there is more subcutaneous effusion, connect the drainage bag, drain the effusion, and prevent wound infection. However, the drainage bag does not contain negative pressure, which can easily lead to reflux of the drainage fluid, and cannot quickly and completely and effectively drain the effusion. Patients are prone to local infection under the skin flap, and even lead to skin flap necrosis. Some patients still have subcutaneous fluid three or four months after surgery, even after returning to work.

Contents of the invention

The utility model aims at the drawbacks of inconvenient drainage when the subcutaneous effusion occurs in the patient in the prior art, and the backflow of the drainage fluid may cause infection if the common drainage bag is used, and provides a negative pressure drainage device, which is convenient to carry , allowing patients to handle at home by themselves, easy to operate, and using negative pressure for negative pressure drainage, which can reduce the risk of infection.

The purpose of the invention of the utility model is achieved through the following technical solutions: a negative pressure drainage device, including a hollow tubular container, the two ends of the container are fixed with sealing plates, and the outer side of one of the sealing plates is provided with the inner cavity of the container. Connected drainage tube, the other sealing plate is provided with a through hole, the container is rotated and connected with a knob, and a rotation limiting mechanism is provided between the knob and the container so that the knob can only rotate in one direction relative to the container; There is a piston that can only slide along the length of the container and is always attached to the inner wall of the container. The piston is fixedly connected with a screw that passes through the hole and is screwed with the knob. When the knob rotates in one direction on the container, the screw drives the piston toward the back. Slide against the side of the drain tube.

In the negative pressure diverter, the through hole is a non-circular structure, and the screw can only slide along the through hole.

In the negative pressure diverter, the side wall of the through hole is provided with a first plane, and the screw is provided with a second plane that always matches the first plane, and the centerline of the screw is parallel to the second plane.

In the negative pressure drainage device, the drainage tube is sheathed with a tube clip that can be used to clamp the drainage tube and close the drainage tube.

In the negative pressure diverter, a connecting nozzle communicating with the inner chamber of the container is fixed on the sealing plate not provided with the through hole, and the drainage tube is sleeved on the connecting nozzle.

In the negative pressure diverter, the knob includes a circular ring that can only be rotatably sleeved outside the container, the bottom of the circular ring is fixedly connected with a bottom plate, and the center of the bottom plate is provided with a screw hole that is screwed with the screw rod. The inner side of the upper end of the ring is fixed with helical teeth distributed in a circular array around the center line of the ring. All the helical teeth are connected end to end in turn to form a ring structure. There is a gap between the helical teeth and the container; the rotation limit mechanism includes The outer surface is an elastic part that cooperates with the helical teeth.

In the negative pressure diverter, a groove is provided on the outer surface of the container, and the elastic member includes a fixed piece pasted and fixed in the groove, and an elastic piece inclined relative to the fixed piece is fixed on the fixed piece.

In the negative pressure diverter, the outer surface of the container is fixed with an annular collar arranged around the center line of the container, the inner surface of the annular ring is provided with an annular groove, and the collar is rotatably sleeved on the inside the ring groove.

In the negative pressure diverter, the cover with the through hole is provided with a circular arc-shaped through groove, and a plurality of exhaust holes are distributed on the bottom plate. With the rotation of the knob, there is always exhaust air. The hole communicates with the through groove.

In the negative pressure diverter, the screw is provided with a plurality of discontinuous grooves of annular structure distributed along the length direction of the screw, the outer surface of the container is fixedly connected with a connecting ring, and the end of the drainage tube facing away from the connecting nozzle The part is fixed with an interface, and the interface is a threaded interface; the side wall of the container is made of transparent material.

Compared with the prior art, the utility model has the following beneficial effects:

1. When the utility model is used, the screw rod is driven downward by turning the knob, and then the piston is driven to slide, so that negative pressure is generated inside the container, which is used to absorb the patient's subcutaneous fluid, and is easy to control;

2. By setting the rotation limit mechanism, the knob can only rotate in one direction, which can avoid the backflow of fluid in the suction container, reduce the risk of infection for patients, and is easy to operate and safer;

3. The tube clamp can also be used to close the drainage tube, stop the drainage and avoid reflux, which is not only easier to operate but also safer.

Description of drawings

Fig. 1 is a perspective view of the utility model;

Fig. 2 is a three-dimensional view of the container;

Fig. 3 is a perspective view of a cover provided with a through hole;

Figure 4 is a perspective view of the knob;

Fig. 5 is a three-dimensional view of the elastic sheet;

Fig. 6 is a schematic diagram of the internal structure of the utility model after removing the drainage tube and the interface;

Marks in the figure: 1. Container, 2. Groove, 3. Collar, 4. Sealing plate, 5. Connecting mouth, 6. Drainage tube, 7. Pipe clamp, 8. Interface, 9. Through hole, 10. No. First plane, 11, knob, 12, piston, 13, screw, 14, second plane, 15, ring, 16, ring groove, 17, bottom plate, 18, helical teeth, 19, fixed piece, 20, shrapnel, 21, through groove, 22, air vent, 23, discontinuous groove, 24, connecting ring, 25, elastic piece, 26, screw hole.

Detailed ways

The utility model will be further described below in conjunction with the embodiment represented by accompanying drawing:

Example 1

As shown in Figures 1-6, a negative pressure drainage device includes a hollow tubular container 1, the side wall of the container 1 is made of transparent material, and the internal conditions of the container 1 can be observed through the transparent side wall of the container 1. The outer surface of the container 1 is provided with a groove 2 and a collar 3 of an annular structure arranged around the center line of the container 1, the collar 3 is fixed on the outer surface of the container 1, and the two ends of the container 1 are fixedly provided with a sealing plate 4, so The outer side of one of the sealing plates 4 is fixedly connected with a connecting nozzle 5 communicating with the inner cavity of the container 1. The connecting nozzle 5 is covered with a drainage tube 6. The drainage tube 6 is a hose. The clamp 7 that holds the hose and closes the drainage tube 6. One end of the drainage tube 6 facing away from the connecting nozzle 5 is fixedly provided with a threaded interface 8 . Another sealing plate 4 is provided with a through hole 9, the through hole 9 is a non-circular structure, the side wall of the through hole 9 is provided with a first plane 10, and the container 1 is rotatably connected with a knob 11, and the knob 11 is connected to the container 1. There is a rotation limiting mechanism that enables the knob 11 to only rotate in one direction relative to the container 1; the container 1 is provided with a piston 12 that can only slide along the length direction of the container 1 and is always attached to the inner wall of the container 1. The piston 12 is fixedly connected with a screw rod 13 passing through the through hole 9 and screwed with the knob 11. The screw rod 13 can only slide along the through hole 9. The screw rod 13 is provided with a second plane that always cooperates with the first plane 10. 14. The center line of the screw rod 13 is parallel to the second plane 14. When the knob 11 rotates in one direction on the container 1 , the screw rod 13 drives the piston 12 to slide toward the side facing away from the drainage tube 6 . Through the cooperation of the first plane 10 and the second plane 14, the screw 13 can only move along the through hole 9, and cooperate with the sliding piston 12 in the container 1 to make the operation of the piston 12 and the screw 13 more stable.

The knob 11 includes a ring 15 that can only rotate on its own and is sleeved outside the container 1 . The inner surface of the ring 15 is provided with a ring groove 16 , and the ring 3 is rotatably sleeved in the ring groove 16 . The lower end of the ring 15 is fixedly connected with a base plate 17, and the center of the base plate 17 is provided with a screw hole 26. The inner side of the upper end of the ring 15 is fixedly distributed with helical teeth 18 distributed in a circular array around the center line of the ring 15. All the helical teeth 18 Connected end to end in order to form a ring structure, there is a space between the helical teeth 18 and the container 1; the rotation limiting mechanism includes an elastic member 25 fixed on the outer surface of the container 1 and cooperating with the helical teeth 18, the elastic member 25 includes The fixed piece 19 fixed in the groove 2 is pasted and fixed, and the elastic piece 20 inclined relative to the fixed piece 19 is fixed on the fixed piece 19 . The unidirectional rotation of the knob 11 can be realized through the cooperation of the elastic piece 20 and the helical tooth 18 .

The cover with the through hole 9 is also provided with a through groove 21 with a circular arc structure, and a plurality of exhaust holes 22 are distributed on the bottom plate 17. With the rotation of the knob 11, there are always exhaust holes 22 It communicates with the through groove 21. Such arrangement can make the space between the piston 12 and the sealing plate 4 provided with the through hole 9 of the container 1 always communicate with the outside world, avoiding high pressure in this part of the space caused by the movement of the piston 12 .

The screw rod 13 is provided with a plurality of discontinuous grooves 23 of annular structure distributed along the length direction of the screw rod 13. When the knob 11 is turned, the screw rod 13 will be driven to rotate to make the screw rod 13 protrude from the lower end of the rotating sleeve to a certain length. The groove 23 breaks off the protruding screw rod 13 to prevent the protruding screw rod 13 from scratching the patient's skin. A connecting ring 24 is fixedly connected to the outer surface of the container 1 . The negative pressure drainage device can be bound and fixed on the patient's waist by using the strap connecting ring 24, which is convenient for carrying and using.

The use principle of the present utility model is as follows:

When the utility model is in use, the provided interface 8 is connected with the indwelling needle on the patient's body, and the knob 11 is gradually rotated in one direction, and the knob 11 will gradually drive the screw rod 13 to move, and then drive the piston 12 to move, so that the container 1 is placed between the piston 12 and the set Negative pressure is generated in the space between the sealing plates 4 connected to the mouth 5 to attract the subcutaneous fluid of the patient. Due to the negative pressure, the drainage fluid will not flow back, which can reduce the risk of infection of the patient. At the same time, the turning limit of the knob 11 is limited by the rotation limiting mechanism provided so that the knob 11 can only rotate in one direction and cannot rotate in the opposite direction. The tube clamp 7 can clamp and close the drainage tube 6 to stop drainage and reflux, which is more convenient and safe to use.

The specific embodiments described herein are only examples to illustrate the spirit of the present utility model. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (10)

1. A kind of negative pressure drainage device, comprises the container of hollow tubular structure, and container two ends are fixedly provided with sealing plate, it is characterized in that, described one of sealing plate outsides is provided with the drain tube that communicates with container lumen, another sealing plate There is a through hole on the plate, and a knob is connected to the container for rotation. A rotation limiting mechanism is provided between the knob and the container so that the knob can only rotate in one direction relative to the container; A piston that slides and always adheres to the inner wall of the container. The piston is fixedly connected with a screw that passes through the through hole and is screwed with the knob. When the knob rotates in one direction on the container, the screw drives the piston to slide toward the side facing away from the drainage tube. 2 . The negative pressure diverter according to claim 1 , wherein the through hole is a non-circular structure, and the screw can only slide along the through hole. 3 . 3. A negative pressure diverter according to claim 2, characterized in that, the side wall of the through hole is provided with a first plane, and the screw rod is provided with a second plane that is always matched with the first plane, and the screw rod The centerline is parallel to the second plane. 4 . The negative pressure drainage device according to claim 1 , wherein the drainage tube is sheathed with a tube clamp capable of clamping the drainage tube and closing the drainage tube. 5 . 5. A negative pressure drainage device according to claim 1, characterized in that, the sealing plate not provided with said through hole is fixedly provided with a connecting nozzle communicating with the inner cavity of the container, and said drainage tube is sleeved on Connect the mouth. 6. A negative pressure drainage device according to claim 1, characterized in that, the knob comprises a circular ring which can only be rotatably sleeved outside the container, the lower end of the circular ring is fixedly connected with a bottom plate, and the center of the bottom plate is set There is a screw hole screwed with the screw, and the inner side of the upper end of the ring is fixed with helical teeth distributed in a circular array around the center line of the ring. All the helical teeth are connected end to end in turn to form a ring structure. There is a gap between the helical teeth and the container. interval; the rotation limiting mechanism includes an elastic member fixed on the outer surface of the container and cooperating with the helical teeth. 7. A negative pressure drainage device according to claim 6, wherein a groove is provided on the outer surface of the container, and the elastic member includes a fixed piece pasted and fixed in the groove, and a fixed piece is fixed on the fixed piece. There are shrapnels inclined relative to the fixed piece. 8. A kind of negative pressure diverter according to claim 6 or 7, characterized in that, the outer surface of the container is fixedly provided with a collar of an annular structure arranged around the centerline of the container, and the inner surface of the annulus is An annular groove is provided, and the collar is rotatably set in the annular groove. 9. A negative pressure diverter according to claim 8, characterized in that, the cover provided with the through hole is provided with a circular arc-shaped through groove, and a plurality of exhaust gas outlets are distributed on the bottom plate Holes, along with the rotation of the knob, always have the exhaust hole to communicate with the through groove. 10. A negative pressure diverter according to claim 5, characterized in that, the screw is externally provided with a plurality of discontinuous grooves of annular structure distributed along the length direction of the screw, and the outer surface of the container is fixedly connected with a connection The end of the drainage tube facing away from the connection mouth is fixed with an interface; the side wall of the container is made of transparent material.

Images