CN203494039U - A negative pressure sealing drainage device - Google Patents

Abstract

The utility model provides a drainage device is sealed to negative pressure, include: the device comprises a porous foam cushion, a drainage tube, a breathable sealing film and a negative pressure device; the drainage tube is provided with an inlet section, an outlet section and a porous section extending into the porous foam cushion, the outlet end is communicated with a negative pressure device, the porous foam cushion is sealed on the wound by a breathable sealing film, and the drainage tube also comprises a poker; at least one part of the poker can enter the drainage tube and clear the blockage in the drainage tube, thus fundamentally solving the blockage problem of the drainage tube, avoiding secondary pollution and being convenient to use.

Description

A negative pressure sealing drainage device

technical field

The utility model relates to the technical field of medical equipment, in particular to a negative pressure sealing drainage device. the

Background technique

Vacuum sealing drainage technique (VSD) refers to the use of polyvinyl alcohol hydrated seaweed salt foam dressing (VSD auxiliary material) containing drainage tubes to cover or fill the wounds of skin and soft tissue defects, and then use biological semipermeable membranes to treat them. It is closed to make it a closed space, and finally the drainage tube is connected to a negative pressure source, which is a brand new treatment method to promote wound healing through controllable negative pressure. the

The materials needed to implement VSD include 1. Medical foam: it is a part directly placed in the drained area. It is a foam-type polyvinyl alcohol hydrated seaweed salt foam dressing (PVA foam), white in color, sponge-like, soft and elastic in texture , strong tensile strength, densely covered with a large number of gaps with a diameter of 0.2 to 1.0mm that communicate with each other, with excellent plasticity, water permeability and good biocompatibility 2. Drainage tube: multi-side hole drainage tube: Germany B.Braun The CH14-18 multi-side hole rigid silicone drainage tube produced by the company is 50cm long and has dense side holes within 14cm at one end. Medical foam supply of 18 multi-side hole drainage tubes, easy to use. 3. Permeable adhesive film: The transparent dressing produced by 3M Company in the United States is composed of polyurethane, which is a permeable adhesive film with molecular valve function. The finished product is packed in a sterile plastic bag for one-time use. It is used to seal the drained area to isolate it from the outside world; 4. Negative pressure source: provide drainage power to ensure the extraction of the things that should be drawn out in the drained area. the

The characteristics of VSD are: 1) Controllable negative pressure can promote blood flow growth and protein synthesis, promote granulation growth, and accelerate wound healing; at the same time, it provides power for all-round active drainage. 2) The sealing of the biological semipermeable membrane isolates the chance of infection between the wound surface and the external environment. 3) All-round drainage is to change the traditional point or local drainage into surface drainage, which ensures that the necrotic tissue and exudate in every part of the wound can be removed from the body in time. the

The advantages of using VSD are as follows: 1) The treatment time is significantly shortened, the pain of the patient is reduced, and the workload is reduced. Patients are exempted from the pain of changing dressings, and doctors are exempted from the labor of changing dressings. 2) Effectively avoid cross-infection VSD is carried out in a closed system. Negative pressure drainage enables the exudate and necrotic tissue in the drainage area to be removed in time. The method of continuous negative pressure suction is adopted to change passive drainage into continuous active suction without leaving any cavity. The level of pressure basically meets the requirements of physiological conditions, so blood supply is not affected. More importantly, the continuous negative pressure suction promotes the continuous flow of body fluid in the wound tissue to the direction of the drainage tube, providing effective, continuous and auxiliary power for the blood supply of the wound. 4) Avoid death. the

VSD technology has been widely used in our country: traumatology, burns, general surgery, orthopedics and other fields. the

However, it is very easy to cause drainage blockage during the use of VSD technology. The reasons are as follows: 1. There is too much necrotic tissue or a large amount of viscous elicited matter in the drainage area, which exceeds the processing capacity of the drainage tube. 2. The sealing film is not tightly sealed, resulting in the loss of the negative pressure environment. The liquid or small particles in the drainage tube will not be attracted and drawn into the drainage container, and will solidify in the drainage tube to form a section of dry lead to block the drainage tube. 3. The sealing film is not tightly sealed, which makes the porous foam cushion dealcoholized and hardened, causing the porous foam cushion to lose its drainage function. 4. Incomplete wound cleaning, such as incomplete hemostasis. the

In order to solve the above technical problems, Chinese patent document CN201529311U discloses a foam cushion structure with a drainage tube with a flushing tube built in. This patent has a flushing tube with a side hole in the built-in drainage tube, and the flushing tube passes through the rear end tube wall of the drainage tube and is drawn out. the

Although this patent document CN201529311U solves the problem of a part of the drainage tube clogging, yet, the drainage tube that is blocked by flushing with water is insufficient in flushing force, not only cannot solve the problem of clogging, but also the flushing fluid will leak to the wound surface, causing secondary infection. In addition, when blockage occurs frequently, frequent flushing is required, and excessive flushing fluid is used, which is not conducive to keeping the wound surface dry. the

Utility model content

In order to fundamentally solve the problem of the blockage of the drainage tube in VSD, the utility model provides a negative pressure sealing drainage device, which is provided with a special cleaning bar for dredging the drainage tube, which fundamentally solves the problem of the blockage of the drainage tube without causing secondary Pollution, easy to use. the

The technical scheme of the utility model is as follows: a negative pressure sealing drainage device, comprising: a porous foam cushion, a drainage tube, a breathable sealing film and a negative pressure device; the drainage tube has an inlet section, an outlet section and a The porous section in the foam cushion, the outlet section is connected to the negative pressure device, and the air-permeable sealing film seals the porous foam cushion on the wound, and also includes a cleaning rod; the cleaning rod is rod-shaped, at least a part of which can enter the drainage tube, And clear the blockage in it. the

A brush is attached to the outer peripheral surface of the cleaning rod. The brush can further unclog the blockage on the drainage tube. the

In order to facilitate multiple use of the cleaning rod, the cleaning rod is arranged in a transparent, retractable and foldable plastic sealing sleeve. the

The sealing sleeve is sealingly connected to one end of the tee pipe. the

Preferably, the three-way tube is also sealingly connected with the inlet section of the drainage tube, and the cleaning rod passes through the inner cavity of the three-way tube and enters the porous section in the drainage tube to clear the blockage therein. the

Preferably, a cleaning pipe is also provided on the tee pipe. the

Preferably, a collection bag is further provided between the negative pressure device and the outlet section. the

The beneficial effects of the utility model are: the negative pressure sealing drainage device is equipped with a special cleaning strip for dredging the drainage tube, which fundamentally solves the problem of the blockage of the drainage tube, does not cause secondary pollution, is convenient to use, and is easy to produce. the

Description of drawings

Fig. 1 is the structure schematic diagram of the first embodiment of the said pass bar of the negative pressure sealing drainage device described in the utility model;

Fig. 2 is the structure schematic diagram of the second embodiment of the pass bar described in the negative pressure sealing drainage device described in the present invention;

Fig. 3 is a schematic structural view of the third embodiment of the cleaning rod of the negative pressure sealing drainage device described in the utility model;

Fig. 4 is a structural schematic diagram of the negative pressure sealing and drainage device of the present invention, in which the cleaning rod shown in the third embodiment is used. the

Detailed ways

Referring to Fig. 1, Fig. 2 and Fig. 3, a negative pressure sealing and drainage device has a pass bar 10; the pass bar 10 is an elongated rod-shaped structure. Referring to FIG. 2 , a brush 11 is attached to the outer peripheral wall of the cleaning rod 10 . Referring to FIG. 3 , in order to facilitate repeated use of the cleaning rod 10 , the cleaning rod 10 is placed in a transparent, retractable and foldable plastic sealing sleeve 12 , and one end of the sealing sleeve 12 is provided with a tee pipe 13 . the

Referring to FIG. 4 , the negative pressure sealing drainage device further includes a porous foam cushion 20 , a drainage tube 30 , a breathable sealing film (not shown in the figure) and a negative pressure device 50 . The drainage tube 30 has an inlet section 31 , an outlet section 32 and a porous section 33 protruding into the porous foam cushion. The outlet section 32 is connected to the vacuum device 50 . The breathable sealing film seals the porous foam cushion 20 to a wound (not shown). The cleaning rod 10 can go in and out of the drainage tube 30, and clear the blockage therein. the

Preferably, referring to FIG. 4 , there is a collection bag 60 between the outlet section 32 and the negative pressure device 50 to collect secretions on the wound. the

The inlet section 31 of the drainage pipe 30 is connected to the tee pipe 12, and the cleaning rod 10 passes through the inner cavity of the tee pipe 12 and enters the porous section 33 of the drainage pipe 30 to clear the blockage therein. the

Preferably, the tee pipe 12 is also provided with a sealed flushing pipe or flushing port 14 . the

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, on the premise of not departing from the idea of the utility model, its structure form can be flexible and changeable, and a series of products can be derived. Just making some simple deductions or replacements should be considered as belonging to the patent protection scope of the utility model determined by the submitted claims. the

Claims (7)

1. a negative pressure closed drainage device, comprising: porous foam cushion, drainage tube, ventilative sealing film and negative pressure device; Described drainage tube has inducer, outlet section and stretches into the porous section in described porous foam cushion, and outlet section is connected negative pressure device, and ventilative sealing film is sealed in described porous foam cushion on wound, it is characterized in that, also comprises poker; Described poker is bar-shaped, and at least a portion can enter drainage tube, and cleaning tamper wherein.

2. negative pressure closed drainage device as claimed in claim 1, is characterized in that, has hairbrush on described poker outer peripheral face.

3. negative pressure closed drainage device as claimed in claim 1 or 2, is characterized in that, described poker is arranged in a plastic seal sleeve pipe transparent, telescopic folding.

4. negative pressure closed drainage device as claimed in claim 3, is characterized in that, be tightly connected one end of tee T of described Sealed casing pipe.

5. negative pressure closed drainage device as claimed in claim 4, is characterized in that, described tee T is also tightly connected with the inducer of described drainage tube, and described poker enters porous section in described drainage tube through the inner chamber of described tee T, cleaning tamper wherein.

6. negative pressure closed drainage device as claimed in claim 5, is characterized in that, is also provided with scavenge pipe on described tee T.

7. negative pressure closed drainage device as claimed in claim 1 or 2, is characterized in that, between described negative pressure device and described outlet section, is also provided with collecting bag.

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