CN204815317U - Take closed negative pressure suction device of fixed structure - Google Patents

Abstract

The utility model is a closed negative pressure suction device with a fixed structure, which solves the problems that the existing device has a complex structure, is inconvenient to use, and cannot guarantee a continuous negative pressure state. 4) The part between has multiple side holes in different directions, the porous dressing (4) is connected with the semi-permeable membrane (7), and the semi-permeable membrane (7) is 2-4cm larger than each side of the porous dressing, and the semi-permeable membrane The top of (7) is connected with the upper protective layer, and there is an adhesive layer under the semipermeable membrane (7). The adhesive layer of the semipermeable membrane is connected with the surface of the first and second drainage tubes extending out of the porous dressing. The adhesive layer of (7) is connected with the sides of the upper and lower porous dressings (4) and the upper surface of the upper porous dressing, and the lower protective layer of the semipermeable membrane (7) is connected with the adhesive layer and the lower surface of the lower porous dressing (4) .

Description

Closed negative pressure suction device with fixed structure

Technical field:

The utility model relates to a drainage device, in particular to a closed negative pressure suction device.

Background technique:

The existing closed negative pressure suction device is separate from the installation device. The installation and fixing device is a semi-permeable membrane with adhesion function. Its working principle: 1) First trim the dressing according to the size of the wound and cover it on the wound, The semi-permeable membrane is trimmed according to the size of the wound dressing so that the semi-permeable membrane is about 3cm larger than each side of the wound dressing. Tear off the protective film on the adhesive side of the semi-permeable membrane and adhere it to the dressing and its surroundings, then tear it off The protective film on the non-adhesive side of the semi-permeable membrane to assist in the installation; 2) Trim multiple semi-permeable membranes according to the number of drainage tubes (at least one semi-permeable membrane is required for each drainage tube), and wrap the semi-permeable membrane tightly around each drainage tube Then adhere to the skin under the drainage tube, and then tear off the protective film on the non-adherent side of the semi-permeable membrane to assist in the installation; 3) Turn on the negative pressure, check the airtightness of the negative pressure suction device after placement, and trim the semi-permeable membrane again The membrane is adhered to the air leak, and then the protective film on the non-adhered side of the semipermeable membrane is torn off to assist in the installation. This device has the following disadvantages: 1) The technical requirements for dressing changers are high: if the semipermeable membrane is trimmed too much, it will be too much The adhesion on the patient's skin will cause itching and discomfort, and if the trimming is too small, it will easily leak air and fail to reach the negative pressure state; the semi-permeable membrane will adhere to the patient's skin after wrapping the adhesive drainage tube and then it will be difficult to operate and easy to leak air; 2) It takes a long time to change the dressing, and it takes at least 10 minutes for skilled installers to install it; 3) The interval between dressing changes is short, and the number of dressing changes is high, which makes the patient suffer more pain; 4) The airtightness of the device has multiple translucences The membranes are spliced to each other, and the adhesion of the splicing part falls off with time, and the semi-permeable membrane needs to be trimmed again to repair. If the peeling part is not found in time, it will affect the negative pressure suction effect, affect the wound healing time and effect, and finally increase the treatment time and increase the treatment cost. The medicine interval is short, and the frequency of dressing change is many, so that the patient bears more misery.

The existing closed negative pressure suction device consists of a tee 1, drainage tubes 2, 3 without side holes located outside the dressing, porous dressing 4, drainage tubes 5, 6 with multiple side holes in different directions located in the middle of the dressing, semi-permeable Membrane 7 composition. A drainage tube with multiple side holes is connected with a drainage tube without side holes to form a complete drainage tube. The tee 1 is connected with the two drainage tubes, and the negative pressure device is placed on the wound surface through the semi-permeable membrane 7 and kept in a closed state. Its working principle: Cover the wound with a porous dressing 4 with porous drainage tubes 5 and 6 in the middle, and then use a semi-permeable membrane 7 on and around the dressing to seal and fix the dressing and the drainage tubes 2 and 3 around the dressing on the skin around the wound , The drainage tube is externally connected with a negative pressure device to form a continuously closed negative pressure space. The continuous negative pressure device can remove wound exudate and liquefied necrotic tissue under the condition of maintaining negative pressure and smooth pipeline; stimulate capillary proliferation and promote the growth of granulation tissue; drain wound bacteria, isolate air pollution, and reduce wound cross-infection; negative pressure The attractive force shrinks the wound surface, and the cells around the wound accelerate the directional growth to further shorten the wound healing time. The disadvantages are as follows: 1) Wound secretions and oozing blood can easily cause wound dressings to dry and agglomerate, drainage tubes can be blocked, and the wound surface can be compressed and cause pain; secretions, blood scabs, and bacteria cannot be cleaned up in time, resulting in increased wound necrosis tissue and aggravated infection , so that the wound surface is not conducive to the direction of healing; 2) Once the device is blocked, there is no effective treatment method, and the whole set of closed negative pressure suction device can only be replaced, which will cause the pain of patients when changing dressings, increase the economic and mental burden of patients, and increase the number of medical staff. Workload, waste of medical resources, and increase social and economic burden; 3) Closed negative pressure suction device without flushing tube cannot be flushed; 4) The flushing tube is inconvenient or placed in a poor location, resulting in an effective flushing range that cannot meet the doctor's expectations 5) It is inconvenient to perform wound drug treatment, and the drug is often only distributed around the irrigation tube or quickly sucked away by the suction tube, so that it cannot be evenly distributed on the wound as expected.

Utility model content:

The purpose of the utility model is to provide a closed negative pressure suction device with a fixed structure which is simple in structure, convenient to use, diverse in function, long in service life and capable of ensuring a continuous negative pressure state.

The utility model is achieved in that:

A closed negative pressure suction device with a fixed structure, the first and second parallel drainage tubes clamped between the upper and lower porous dressings 4 have multiple side holes in different directions, the porous dressing 4 is connected with the semi-permeable membrane 7, semi-permeable The permeable membrane 7 is 2-4cm larger than each side of the porous dressing, and there is an adhesive layer under the semipermeable membrane 7, and the adhesive layer of the semipermeable membrane is connected with the surface of the first and second drainage tubes stretching out from the porous dressing, and the semipermeable membrane The adhesive layer of 7 is connected with the side of upper and lower porous dressing 4 and the top of the upper porous dressing, and the lower protective layer 13 of semipermeable membrane 7 is connected with the adhesive layer and the lower porous dressing 4 below.

The lower ends of the parallel first and second drainage pipes are connected to the first tee 1, the upper ends of the first and second drainage pipes are connected to the second tee 10, or the upper ends of the first drainage pipe are connected to the second tee 10, and the upper ends of the first drainage pipe are connected to the second tee 10. The upper ends of the two drainage tubes are connected with syringes or long cotton swabs 11.

The upper surface of the semipermeable membrane 7 is connected to the upper protective layer 12 .

The first drainage tube of the utility model includes drainage tubes 2, 5, 8, and the second drainage tube includes drainage tubes 3, 6, 9.

On the basis of the original negative pressure device, the utility model continues to extend the first and second drainage tubes to the outside of the dressing 4, and the extended drainage tubes 8 and 9 have no side holes, which can be used as flushing tubes or negative pressure suction tubes; And add a three-way pipe 10 to connect the drainage pipes 8 and 9, which has good suction and flushing performance, can greatly shorten the replacement time of the closed negative pressure suction device, and increase the service life.

The closed negative pressure suction device and the installation device of the utility model are a unified body, and a plurality of semi-permeable membranes are pasted together to form a closed device, and a piece of semi-permeable membrane is used to complete the pasting, which solves the problem of pasting between the previous semi-permeable membranes. The problem of tightness and air leakage. A whole piece of semi-permeable membrane is cut in advance according to the size of different dressings so that each side is 3cm larger than the dressing. The semi-permeable membrane 7 wraps the drainage tubes 6 and 7 tightly. When installing by medical personnel, they only need to tear off the lower protective film of the semi-permeable membrane, place the dressing on the wound, press the upper protective layer of the semi-permeable membrane, make the semi-permeable membrane 7 firmly adhere to the skin to achieve a closed state, and then tear off the semi-permeable membrane. The protective layer on the membrane, the protective layer on the semi-permeable membrane does not have the function of adhesion, but it can provide support and make the installation more convenient.

As mentioned above, the utility model has the following advantages: 1) Easy installation and short installation time: when the medical staff installs, they only need to tear off the protective film on the side of the semi-permeable membrane, place the dressing on the wound, press the semi-permeable membrane The place in contact with the skin makes it adhere firmly to an airtight state. The whole installation process is about 1 minute, which is one tenth of the previous device; 2) The semi-permeable membrane is a unified body, and there is no place where multiple semi-permeable membranes adhere to each other It is not firm, which greatly reduces the incidence of air leakage; 3) The size of the semi-permeable membrane is adhered to the dressing before leaving the factory according to the standard, so as to avoid itching, discomfort and air leakage caused by improper trimming; 4) There is no gap between the semi-permeable membrane The occurrence rate of air leakage caused by improper installation is also greatly reduced, so that the closed negative pressure device can ensure a continuous negative pressure state, making the treatment effect better; 5) The replacement of negative pressure device caused by air leakage is reduced , can reduce the number of dressing changes for patients, and reduce the cost of dressing changes for patients; the guarantee of treatment effect can reduce the hospitalization time of patients and reduce costs; at the same time, it also reduces the workload of medical workers. 6) The utility model has the advantages of simple structure, convenient use, diverse functions, good suction and flushing performance, can greatly shorten the replacement time of the closed negative pressure suction device, increase the service life, reduce the pain of patients, reduce hospitalization costs, and reduce the workload of medical care , Reduce medical insurance and social burden.

Description of drawings:

Fig. 1 is a structural diagram of an existing closed vacuum suction device.

Fig. 2 is a structural diagram of the utility model.

Fig. 3 is one of the use status diagrams of the utility model.

Fig. 4 is the second use state diagram of the utility model.

Figure 5 is a cross-sectional view of the dressing.

FIG. 6 is a cross-sectional view along line A-A of FIG. 2 .

Fig. 7 is a sectional view along line BB of Fig. 2 .

Detailed ways:

Example 1:

The first and second drainage tubes that are juxtaposed between the upper and lower porous dressings 4 have multiple side holes in different directions. The porous dressing 4 is connected to the semi-permeable membrane 7, and the semi-permeable membrane 7 is larger than each side of the porous dressing by 2 -4cm, the top of the semipermeable membrane 7 is connected with the upper protective layer 12, and there is an adhesive layer under the semipermeable membrane 7, and the adhesive layer of the semipermeable membrane and the surface of the first and second drainage tubes that stretch out the porous dressing Connect, the adhesive layer of semi-permeable membrane 7 is connected with the side of upper and lower porous dressing 4 and the top of upper porous dressing, the lower protective layer 13 of semi-permeable membrane 7 is connected with adhesive layer and the bottom of lower porous dressing 4.

The lower ends of the first and second drainage tubes juxtaposed are connected to the first tee 1, the upper ends of the first and second drainage tubes are connected to the second tee 10, and the first and second drainage tubes are sandwiched between the inner and outer porous dressings 4. There are multiple side holes in different directions, and the outer surface of the outer porous dressing 4 is connected with the semipermeable membrane 7 . The first drainage tube includes drainage tubes 2 , 5 , 8 , and the second drainage tube includes drainage tubes 3 , 6 , 9 .

When the three-way 1 is fully opened and the other three-way 10 is fully closed, parts 2, 3, 5, and 6 of the drainage tube are in an open state, and parts 8 and 9 are in a closed state. No flushing effect, only achieves negative pressure suction treatment on the wound surface, which is consistent with the effect of the previous closed negative pressure device;

When the two three-way tubes are opened, the drainage tubes 2, 3, 5, 6, 8, and 9 are all open, and the irrigation fluid flows mainly in the drainage tube 8→drainage tube 5→drainage tube 2 and drainage tube 9→drainage Tube 6 → drainage tube 3, a small amount of drainage fluid flows between drainage tube 5, drainage tube 6, dressing 4 and the wound under the dressing. It mainly plays the role of negative pressure suction treatment on the wound surface and flushing the drainage tube at the same end, and slightly moistens the wound surface and flushes the drainage tube at the other end;

It can be used as both a wound irrigation tube and a wound drainage tube. When the tubes are unobstructed, the flushing and drainage speeds of the two tubes are the same. When one drainage tube is slightly blocked, the flushing and drainage speed will be reduced It is convenient for patients and medical staff to observe, achieving the dual effects of washing the wound and observing the patency of the drainage tube;

When the adjustment tee 1 is connected to the negative pressure device, the other tee 10 is connected to the flushing device and is half-open, that is, only the drainage tubes 2, 5, 6, 9 (or drainage tubes 3, 5, 6, 8) are opened. The flow direction of the irrigation fluid is drainage tube 9→6→5→2 or drainage tube 8→5→6→3, mainly to achieve negative pressure suction and moistening of the wound surface between the drainage tubes; rinse wound secretions, bacteria, blood scab; external antibiotics Rinse to treat wound infection; externally use drugs such as growth factors to promote wound healing, etc.; can fully attract and moisten the entire wound, and make the drug fully distributed to the entire wound.

Example 2:

The first and second drainage tubes that are juxtaposed between the upper and lower porous dressings 4 have multiple side holes in different directions. The porous dressing 4 is connected to the semi-permeable membrane 7, and the semi-permeable membrane 7 is larger than each side of the porous dressing by 2 -4cm, the top of the semipermeable membrane 7 is connected with the upper protective layer 12, and there is an adhesive layer under the semipermeable membrane 7, and the adhesive layer of the semipermeable membrane and the surface of the first and second drainage tubes that stretch out the porous dressing Connect, the adhesive layer of semi-permeable membrane 7 is connected with the side of upper and lower porous dressing 4 and the top of upper porous dressing, the lower protective layer 13 of semi-permeable membrane 7 is connected with adhesive layer and the bottom of lower porous dressing 4.

The lower ends of the parallel first and second drainage tubes are connected to the first tee 1, the upper end of the first drainage tube is connected to the second tee 10, the upper end of the second drainage tube is connected to the syringe, and the first and second drainage tubes are clamped on The part between the inner and outer porous dressings 4 has multiple side holes in different directions, and the outer surface of the outer porous dressing 4 is connected with the semipermeable membrane 7 . The first drainage tube includes drainage tubes 2 , 5 , 8 , and the second drainage tube includes drainage tubes 3 , 6 , 9 .

When the drainage tube is blocked or the dressing is dry, according to the blocked position, one of the drainage tubes 2, 3, 8, 9 and one of the drainage tubes 9 connected to the tee can be removed, and connected to a 20ml syringe with normal saline after the needle is removed. Repeatedly forcefully flush the drainage tube with the syringe to unclog the drainage tube; when the drainage tubes 2, 5, 6, and 9 are opened at the same time, and the drainage tubes 3 and 8 are closed, a 20ml syringe filled with normal saline is used to repeatedly force the drainage tube 9 Rinsing acts to clean and moisten the dressing.

Example 3:

The first and second drainage tubes that are juxtaposed between the upper and lower porous dressings 4 have multiple side holes in different directions. The porous dressing 4 is connected to the semi-permeable membrane 7, and the semi-permeable membrane 7 is larger than each side of the porous dressing by 2 -4cm, the top of the semi-permeable membrane 7 is connected with the upper protective layer 12, and there is an adhesive layer under the semi-permeable membrane 7, and the adhesive layer of the semi-permeable membrane is connected with the surface of the first and second drainage tubes extending out of the porous dressing, The adhesive layer of the semipermeable membrane 7 is connected with the sides of the upper and lower porous dressings 4 and the upper surface of the upper porous dressing, and the lower protective layer 13 of the semipermeable membrane 7 is connected with the adhesive layer and the lower porous dressing 4 below.

The lower ends of the first and second drainage tubes juxtaposed are connected with the first tee 1, the upper ends of the first and second drainage tubes are connected with the second tee 10, and the upper ends of the second drainage tube are connected with the long cotton swab 11. The part of the drainage tube clamped between the inner and outer porous dressings 4 has multiple side holes in different directions, and the outer surface of the outer porous dressing 4 is connected with the semipermeable membrane 7 . The first drainage tube includes drainage tubes 2 , 5 , 8 , and the second drainage tube includes drainage tubes 3 , 6 , 9 .

Unclog the drainage tube by two-way flushing and cross flushing. If it still cannot be dredged, a long cotton swab can be inserted into the drainage tube to dredge the blockage (see Figure 4), and then rinse repeatedly with a syringe.

Claims (3)

1. A closed negative pressure suction device with a fixed structure, the first and second drainage tubes side by side sandwiched between the upper and lower porous dressings (4) have multiple side holes in different directions, the porous dressing (4) and half The permeable membrane (7) is connected, and the semipermeable membrane (7) is 2-4cm larger than each side of the porous dressing. The surfaces of the first and second drainage tubes of the dressing are connected, the adhesive layer of the semipermeable membrane (7) is connected with the sides of the upper and lower porous dressings (4) and the upper surface of the upper porous dressing, and the lower protective layer of the semipermeable membrane (7) The layer (13) is joined to the adhesive layer and the underside of the lower porous dressing (4). 2. The closed negative pressure suction device with a fixed structure according to claim 1, characterized in that the lower ends of the parallel first and second drainage tubes are connected to the first tee (1), and the upper ends of the first and second drainage tubes Connect with the second tee (10), or connect the upper end of the first drainage tube with the second tee (10), and connect the upper end of the second drainage tube with a syringe or a long cotton swab (11). 3. The closed negative pressure suction device with fixed structure according to claim 1, characterized in that the upper surface of the semipermeable membrane (7) is connected with the upper protective layer (12).