CN203208514U - Negative pressure drainage and positive pressure dosing device - Google Patents

Abstract

The utility model relates to a medical device, in particular to a negative pressure drainage and positive pressure drug delivery device, which comprises a PVA or PU sponge dressing, a negative pressure drainage tube, a flushing tube and a tube plug. Wherein the PVA or PU sponge dressing has not less than one negative pressure drainage tube, flushing tube and observation window. The setting of the observation window realizes the dynamic observation of the wound or skin graft, which can not only realize the treatment at any time according to the situation, but also can be used for scientific research of wound healing and skin graft. The utility model moves the negative pressure drainage tube and the flushing tube from the center of the 8mm-9mm thick PVA and PU sponge dressing to the place 1mm away from the bottom surface of the PVA and PU sponge dressing, so that the negative pressure drainage tube and the flushing tube are closer to the wound, further improving the negative pressure. Effects of pressure drainage and positive pressure administration of oxygen. At the same time, multiple pieces of PVA and PU sponge dressings are spliced in parallel, series, and parallel in series, so that the negative pressure drainage tube and irrigation tube can reach all parts of the wound, and the splicing of multiple PVA and PU sponge dressings does not reduce the negative pressure drainage and Effects of Positive Pressure Irrigation Administration of Oxygen.

Description

A visual negative pressure drainage and positive pressure drug delivery device

1. Technical field

The utility model relates to medical equipment, in particular to a visible negative pressure drainage and positive pressure drug delivery device. the

2. Background technology

Negative pressure drainage in surgical operations and wound management is an important guarantee for successful operations and treatments. Appropriate negative pressure drainage can make the operation area or wound in a continuous negative pressure state, which can play a role in sufficient drainage, and plays an important role in controlling postoperative bleeding and exudation, eliminating dead space between wounds, and preventing postoperative infection. clinical significance. Continuous negative pressure sealing drainage technology has many advantages in treating various wounds: ①Continuous all-round and high-efficiency negative pressure drainage, that is, the exudate, pus and exfoliated necrotic tissue in the drainage area can be drawn out of the body in a timely and thorough manner without drainage It is necessary to limit the body position in the "low position" to fully keep the wound clean. ②Wound exudate is drawn out at any time to reduce the number of bacteria on the wound, eliminate the culture medium of bacteria, prevent the spread of infection and the absorption of toxins; it can greatly reduce the application of antibiotics and effectively prevent cross-infection in the hospital. ③ Negative pressure can promote wound healing, significantly accelerate the closure of the cavity, reduce the wound surface, reduce the area of skin grafting, and thus shorten the hospital stay. ④The operation is simple and easy, the treatment conditions are not high, and it can be operated at the bedside, which is suitable for grass-roots promotion. ⑤ easy care. There is no need to change the dressing every day, thereby eliminating the pain of frequent dressing changes for patients and the labor of medical staff. ⑥ Drug administration (chymotrypsin, antibiotics) and oxygen can be administered through the irrigation tube. ⑦ Simplify the two-stage operation. ⑧It can be used for bandaging during the survival process of skin grafts. After the skin graft is transplanted, it must be packed and bandaged, so that the grafted skin can always be in close contact with the wound base in order to survive. Continuous negative pressure sealing drainage technology can achieve a better effect than packing and pressure bandaging, and is more conducive to the survival of skin grafts, and has been widely used in skin graft operations. the

In addition to continuous negative pressure drainage, intermittent or continuous use of drugs and intermittent oxygen supply are also beneficial to control wound infection and promote wound healing. the

However, while this type of dressing (device, device or device) improves some functions, it also presents other disadvantages:

(1) It is impossible to observe the changes of the wound or skin graft in real time: although the outermost layer of the existing negative pressure drainage dressing is transparent, the foam material of the inner layer is opaque, so it is impossible to observe the changes of the wound or the wound surface. Variety. For example, the patent (Transparent Wound Dressing 200520084119.8) adds a water-absorbing pad under the transparent ultra-thin medical healing film, which can absorb exudate, but the water-absorbing pad is opaque after absorbing the exudate, and cannot observe the changes of the wound or the grafted skin. Moreover, such dressings have a limited amount of exudate absorption, cannot achieve continuous negative pressure suction, and also have the disadvantage of requiring frequent replacement. the

(2) When wound changes can be observed in real time, continuous negative pressure drainage cannot be achieved: recently, there is a patent (wound dressing CN202113231U) that uses plasma-treated translucent polymer elastic cloth fibers or carbon fibers as a support layer, and the The support layer is combined with the underlying hydrogel to form the liquid-permeable absorbent layer. When the exudate absorbing layer absorbs the exudate, it becomes transparent, so that the changes of the wound or grafted skin can be observed. However, when this type of dressing is used on a wound, its disadvantages are limited absorption of exudate, inability to sustain negative pressure suction, and frequent replacement. In addition, when this type of dressing is used in skin graft surgery, although it can sustain negative pressure suction, it may not be able to make the exudate-absorbing layer completely transparent due to less exudate, which is not conducive to observing changes in the skin graft. the

(3) The effect is reduced after splicing: the existing negative pressure drainage dressing usually adopts PVA or PU sponge dressing with a certain size (mostly 10cm×15cm) and a certain porosity. Class dressing stitched together. However, because the negative pressure drainage tube and irrigation tube of each dressing did not pass through the side of the sponge dressing, the negative pressure drainage tube and the irrigation tube of each sponge dressing could not be connected. There are negative pressure drainage tubes and flushing tubes in the sponge dressing of the drug delivery device (such as a syringe, etc.), which leads to the medicine, irrigation fluid and oxygen supplied by the proximal sponge dressing block to reach the distal sponge dressing through diffusion. The negative pressure in the distal sponge dressing must also be transmitted through the sponge. Therefore, this connection will significantly reduce the effectiveness of negative pressure suction and administration of oxygen, which limits the use of existing PVA or PU sponge dressings in larger wounds. or use in skin grafting. the

(4) Drainage or irrigation effect needs to be improved: the negative pressure drainage tube and irrigation tube on the existing drainage dressing usually pass through the middle of the sponge dressing with a thickness of about 9mm, so the wound exudate, irrigation fluid, medicine and oxygen, etc. Both need to go through a thicker sponge (when the outer diameter of the negative pressure drainage tube and irrigation tube is 5mm, the distance between the negative pressure drainage tube and the irrigation tube is at least 2mm; the smaller the outer diameter, the greater the distance) to reach the wound; and, With the prolongation of use time, due to the absorption of more wound exudate or pus or necrotic tissue, the pores of the sponge are blocked, which greatly reduces the effect of drainage and administration. the

(5) Restricting patient's activities: the existing continuous negative pressure drainage dressing must be connected to a negative pressure source. Once the negative pressure source is left, the negative pressure drainage will stop. Therefore, the patient must always keep connected to the negative pressure source, which will inevitably limit the patient's activities. , which is not conducive to wound healing, but also reduces the patient's quality of life; although the use of portable negative pressure sources such as lengthening the negative pressure drainage tube or connecting negative pressure bottles can increase the patient's activities to a certain extent, however, due to such portable negative pressure The negative pressure of the pressure source is limited, and the negative pressure drainage tube of the existing continuous negative pressure drainage dressing is not blocked, so that the patient's activity time is severely limited. the

For these shortcomings, the present invention has made the following improvements:

(1) Add an observation window with a diameter of 3mm-5mm at an interval of 1.0cm-2.0cm on the existing PVA or PU sponge dressing to realize dynamic observation of the wound or skin graft. Not only can it be treated at any time according to the situation, but it can also be used for scientific research of wound healing and skin grafting. the

(2) Put the negative pressure drainage tube and flushing tube through the PVA or PU sponge dressing, and one end gradually becomes thinner or the outer diameter of one end is equal to the inner diameter of the other end, so that the thin end can be inserted into the thick end and tightly connected to realize PVA or PU sponge dressing. After the PU sponge dressing is spliced, the negative pressure drainage tube and the irrigation tube can reach all parts of the wound or skin (the furthest distance is not more than 1.5cm), so that the splicing of multiple PVA or PU sponge dressings will not reduce the negative pressure drainage and flushing administration, etc. Effect. the

(3) Move the negative pressure drainage tube and irrigation tube from the center of the 9mm thick PVA or PU sponge dressing to 1mm away from one side of the PVA or PU sponge dressing, so that the negative pressure drainage tube and irrigation tube are closer to the wound or skin graft, and further improve Negative pressure drainage and medication, oxygen effect. the

(4) Set up tube plugs at both ends of the drainage tube and flushing tube, which is not only conducive to maintaining good negative pressure or positive pressure flushing, administering oxygen after PVA or PU sponge dressing is spliced, but also conducive to disconnecting the negative pressure source or The negative or positive pressure in the PVA or PU sponge dressing is maintained by a positive pressure source, so that the patient can move freely within a certain period of time and reduce the complications of long-term bed rest. the

3. Contents of the invention

The invention provides a visual negative pressure drainage and positive pressure drug delivery device, comprising: PVA or PU sponge dressing 1, negative pressure drainage tube 2, flushing tube 3 and tube blocking plug 12, characterized in that: PVA or PU sponge The dressing 1 has no less than one negative pressure drainage tube 2 , flushing tube 3 and observation window 4 , and the negative pressure drainage tube 2 and flushing tube 3 are transparent and hard silicone tubes with multiple side holes 11 . The front end 13 of the negative pressure drainage tube, the rear end 14 of the negative pressure drainage tube, the front end 15 of the flushing tube and the rear end 16 of the flushing tube all have a plug 12 for blocking the tube. Both ends of the drainage tube and the flushing tube are provided with detachable plugs 12, which are beneficial to maintaining good negative pressure or positive pressure flushing and oxygen supply after the splicing of PVA or PU sponge dressing 1, and are also conducive to disconnection. Negative pressure source or positive pressure source maintains the negative pressure or positive pressure in the PVA or PU sponge dressing 1, so that the patient can move freely within a certain period of time and reduce the complications of long-term bed rest. Negative pressure drainage tube 2 and flushing tube 3 all pass through the upper side 5 of PVA or PU sponge dressing 1, after passing through PVA or PU sponge dressing 1, pass through the lower side 6 of PVA or PU sponge dressing 1, PVA or PU sponge dressing 1 The distance between the upper surface 9 and the lower surface 10 of the PU sponge dressing 1 is 8mm-9mm, and the distance between the negative pressure drainage tube 2 and the flushing tube 3 and the lower surface 10 of the PVA or PU sponge dressing 1 is 1mm. Move the negative pressure drainage tube 2 and irrigation tube 3 from the center of the 8mm-9mm thick PVA or PU sponge dressing to 1mm away from one side of the PVA or PU sponge dressing, so that the negative pressure drainage tube 2 and irrigation tube 3 are closer to the wound, further improving Negative pressure drainage and administration of oxygen and dressing fixation effect. The observation window 4 runs through the upper surface 9 and the lower surface 10 of the PVA or PU sponge dressing 1, and is evenly distributed on the PVA or PU sponge dressing 1, and the observation window 4 does not overlap with the negative pressure drainage tube 2 and the irrigation tube 3. the

Wherein, the distance between the observation windows 4 is 2.0cm-3.0cm, and the distance between the observation window 4 on the side and the upper side 5 or the lower side 6 or the left side 7 or the right side 8 is 2.0cm-3.0cm. The diameter of the window 4 is 3mm-5mm. The introduction of the observation window enables dynamic observation of wounds or skin grafts, and can also be used in scientific research on wound healing and skin grafts. the

Wherein, the negative pressure drainage tubes 2 and flushing tubes 3 are distributed alternately. the

Wherein, the distance between the negative pressure drainage tubes 2 is between 2.0cm-3.0cm, and the distance between the most lateral negative pressure drainage tube 2 and the left side 7 or right side 8 is between 1.0cm-1.5cm between. the

Wherein, the distance between the flushing pipes 3 is between 2.0 cm and 3.0 cm, and the distance between the flushing pipe 3 on the most side and the left side 7 or the right side 8 is between 1.0 cm and 1.5 cm. the

Among them, the negative pressure drainage tube 2 is a transparent hard silicone tube: its length is the distance from the upper side 5 to the lower side 6 of the PVA or PU sponge dressing 1 plus 50mm-80mm, and it is evenly distributed on the negative pressure drainage tube 2. 6mm-10mm, a plurality of side holes 11 whose diameter is 1/3-1/2 of the outer diameter of the negative pressure drainage tube 2, the inner diameter of the front end 13 of the negative pressure drainage tube is 5mm-8mm, and the outer diameter of the rear end 14 of the negative pressure drainage tube is 5mm-8mm, can ensure that the negative pressure drainage tube rear end 14 can be inserted into the negative pressure drainage tube front end 13 and closely connected. After the splicing of PVA or PU sponge dressing 1, the negative pressure drainage tube 2 can reach all parts of the wound (the furthest distance is not more than 1.5cm), and the drainage effect will not be reduced after multiple pieces of PVA or PU sponge dressing are spliced. the

Among them, the flushing tube 3 is a transparent hard silicone tube: its length is the distance from the upper side 5 to the lower side 6 of the PVA or PU sponge dressing 1 plus 50mm-80mm, and it is evenly distributed on the flushing tube 3 with a spacing of 6mm-10mm. A plurality of side holes 11 whose diameter is 1/3-1/2 of the outer diameter of the flushing pipe 3, the front end 15 of the flushing pipe has an inner diameter of 4mm-6mm, and the rear end 16 of the flushing pipe has an outer diameter of 4mm-6mm, ensuring that the rear end 16 of the flushing pipe can be inserted The front end 15 of the flushing tube is closely connected. However, the outer diameter of the nipple of a commercially available syringe or infusion set is 4mm. Therefore, the inner diameter of the front end 15 of the flushing tube and the outer diameter of the rear end 16 of the flushing tube are preferably 4mm. Since the back end 16 of the flushing tube pierced by the PVA or PU sponge dressing can be inserted into the front end 15 of the flushing tube, the flushing tube 3 can reach all parts of the wound after the splicing of the PVA or PU sponge dressing 1 (the farthest point is not more than 1.5 cm), realizing multiple The splicing of block PVA or PU sponge dressings will not reduce the effect of washing and administering oxygen. the

The side holes 11 are evenly distributed on the tube wall of the negative pressure drainage tube 2 and the flushing tube 3, the side holes 11 are staggered from each other, and the distance between them is 6mm-10mm, and the diameter of the side holes 11 is equal to that of the negative pressure drainage tube 2 and the flushing tube 3. 1/3-1/2 of the outer diameter. the

Among them, the connecting catheter 17 is a transparent hard silicone tube, the inner diameter of the thick end is 4mm-8mm, and the outer diameter of the thin end is 4mm-8mm, so that the thin end can be tightly inserted into the front end 13 of the negative pressure drainage tube or the front end 15 of the flushing tube or the three-way pipe A branch of 18. In addition, both ends of the connecting conduit 17 are provided with detachable plugs, and the length of the connecting conduit 17 is 50mm-200mm. the

Wherein, the inner diameter of a branch pipe of the three-way pipe 18 is equal to the outer diameter of the thin end of the connecting conduit 17 or the rear end 14 of the negative pressure drainage tube or the outer diameter of the flushing tube rear end 16, so that the thin end of the connecting conduit 17 or the rear end 14 of the negative pressure drainage tube Or the rear end 16 of the flushing tube can be tightly inserted into the branch pipe; the outer diameter of the other two branch pipes is equal to the inner diameter of the thick end 17 of the connecting catheter or the front section 13 of the negative pressure drainage tube or the front section 15 of the flushing tube, so that this end can be inserted into the thick end of the connecting catheter 17 , the length of the three branch pipes is 15mm-20mm. the

4. Description of drawings

Fig. 1 is a front view of the present invention. the

FIG. 2 is a cross-sectional view through the observation window 4 of FIG. 1 . the

Fig. 3 is an extended application diagram of the visible negative pressure drainage and positive pressure drug delivery device. the

In the figure: 1. PVA or PU sponge dressing; 2. Negative pressure drainage tube; 3. Irrigation tube; 4. Observation window; 5. Upper side; 6. Lower side; 7. Left side; 8. Right side; 9. Upper surface; 10. Lower surface; 11. Side hole; 12. Plug; 13. Front end of negative pressure drainage tube; 14. Rear end of negative pressure drainage tube; 15. Front end of flushing tube; 16. Back end of flushing tube 17, connecting pipe; 18, three-way pipe; 19, the junction of negative pressure drainage tube front end 13 and rear end 14 and flushing pipe front end 15 and flushing pipe rear end 16; 20, the left side of two PVA or PU sponge dressings The place where the side 7 and the right side 8 are in close contact. the

5. Specific implementation

Example 1

The invention provides a visual negative pressure drainage and positive pressure drug delivery device, comprising: PVA or PU sponge dressing 1, negative pressure drainage tube 2, flushing tube 3, and tube plug 12, characterized in that: PVA or PU The sponge dressing 1 has not less than one negative pressure drainage tube 2, flushing tube 3 and observation window 4, the negative pressure drainage tube 2 and the flushing tube 3 are transparent and hard silicone tubes with multiple side holes 11, and the negative pressure drainage tube The front end 13 of the tube, the rear end 14 of the negative pressure drainage tube, the front end 15 of the flushing tube, and the rear end 16 of the flushing tube all have detachable plugs 12, and the negative pressure drainage tube 2 and the flushing tube 3 are all made of PVA or PU sponge dressing 1 After passing through the PVA or PU sponge dressing 1, it passes through the lower side 6 of the PVA or PU sponge dressing 1, and the distance between the upper surface 9 and the lower surface 10 of the PVA or PU sponge dressing 1 is 8mm-9mm, the distance between the negative pressure drainage tube 2 and the flushing tube 3 and the lower surface 10 of the PVA or PU sponge dressing 1 is 1mm, the observation window 4 runs through the upper surface 9 and the lower surface 10 of the PVA or PU sponge dressing 1, and is evenly distributed On the PVA or PU sponge dressing 1, and the observation window 4 does not overlap with the negative pressure drainage tube 2 and the irrigation tube 3. the

Wherein, wherein, the distance between the observation windows 4 is 2.0cm-3.0cm, and the distance between the most side observation window 4 and the upper side 5 or the lower side 6 or the left side 7 or the right side 8 is 2.0cm-3.0cm , the diameter of the observation window 4 is 3mm-5mm. The introduction of the observation window enables dynamic observation of wounds or skin grafts, and can also be used in scientific research on wound healing and skin grafts. the

Wherein, negative pressure drainage tubes 2 and flushing tubes 3 are distributed alternately. the

Wherein, the distance between the negative pressure drainage tubes 2 is between 2.0cm-3.0cm, and the distance between the most lateral negative pressure drainage tube 2 and the left side 7 or right side 8 is between 1.0cm-1.5cm between. the

Wherein, the distance between the flushing pipes 3 is between 2.0 cm and 3.0 cm, and the distance between the flushing pipe 3 on the most side and the left side 7 or the right side 8 is between 1.0 cm and 1.5 cm. the

Among them, the negative pressure drainage tube 2 is a transparent hard silicone tube: its length is the distance from the upper side 5 to the lower side 6 of the PVA or PU sponge dressing 1 plus 50mm-80mm, and it is evenly distributed on the negative pressure drainage tube 2. 6mm-10mm, a plurality of side holes 11 whose diameter is 1/3-1/2 of the outer diameter of the negative pressure drainage tube 2, the inner diameter of the front end 13 of the negative pressure drainage tube is 5mm-8mm, and the outer diameter of the rear end 14 of the negative pressure drainage tube is 5mm-8mm, it can ensure that the rear end 14 of the negative pressure drainage tube can be inserted into the front end 13 of the negative pressure drainage tube and be closely connected. After the splicing of PVA or PU sponge dressing 1, the negative pressure drainage tube 2 can reach all parts of the wound (the furthest distance is not more than 1.5cm), and the effect of negative pressure drainage will not be reduced after multiple pieces of PVA or PU sponge dressing 1 are spliced. the

Among them, the flushing tube 3 is a transparent hard silicone tube: its length is the distance from the upper side 5 to the lower side 6 of the PVA or PU sponge dressing 1 plus 50mm-80mm, and it is evenly distributed on the flushing tube 3 with a spacing of 6mm-10mm. A plurality of side holes 11 whose diameter is 1/3-1/2 of the outer diameter of the flushing pipe 3, the front end 15 of the flushing pipe has an inner diameter of 4mm-6mm, and the rear end 16 of the flushing pipe has an outer diameter of 4mm-6mm, ensuring that the rear end 16 of the flushing pipe can be inserted The front end 15 of the flushing tube is closely connected. However, the outer diameter of the nipple of a commercially available syringe or infusion set is 4mm, so the inner diameter of the front end 15 of the flushing tube or the outer diameter of the rear end 16 of the flushing tube is preferably 4mm. Since the back end 16 of the irrigation tube that the PVA or PU sponge dressing 1 passes through can be inserted into the front end 15 of the irrigation tube, the irrigation tube 3 can reach all parts of the wound after the splicing of the PVA or PU sponge dressing 1 (the farthest point is not more than 1.5 cm), realizing Splicing multiple PVA or PU sponge dressings will not reduce the effect of washing and administering oxygen. the

The side holes 11 are evenly distributed on the tube wall of the negative pressure drainage tube 2 and the flushing tube 3, the side holes 11 are staggered from each other, and the distance between them is 6mm-10mm, and the diameter of the side holes 11 is equal to that of the negative pressure drainage tube 2 and the flushing tube 3. 1/3-1/2 of the outer diameter. the

Among them, the connecting catheter 17 is a transparent hard silicone tube, the inner diameter of the thick end is 4mm-8mm, and the outer diameter of the thin end is 4mm-8mm, so that the thin end can be tightly inserted into the front end 13 of the negative pressure drainage tube or the front end 15 of the flushing tube or the three-way pipe A branch of 18. In addition, both ends of the connecting conduit 17 are provided with detachable plugs, and the length of the connecting conduit 17 is 50mm-200mm. the

Wherein, the inner diameter of a branch pipe of the three-way pipe 18 is equal to the outer diameter of the thin end of the connecting conduit 17 or the rear end 14 of the negative pressure drainage tube or the outer diameter of the flushing tube rear end 16, so that the thin end of the connecting conduit 17 or the rear end 14 of the negative pressure drainage tube Or the rear end 16 of the flushing tube can be tightly inserted into the branch pipe; the outer diameter of the other two branch pipes is equal to the inner diameter of the thick end 17 of the connecting catheter or the front section 13 of the negative pressure drainage tube or the front section 15 of the flushing tube, so that this end can be inserted into the thick end of the connecting catheter 17 , the length of the three branch pipes is 15mm-20mm. the

Example 2

The specific usage methods of the above visible negative pressure drainage and positive pressure drug delivery device are as follows:

1. Surgical debridement;

2. Place the PVA or PU sponge dressing 1 of the visible negative pressure drainage and positive pressure drug delivery device on the wound;

3. Fix it with a transparent adhesive film and seal it with the normal skin around the wound;

4. Block the rear end 14 of the negative pressure drainage tube and the rear end 16 of the flushing tube with the plug 12;

5. Remove the plug 12 at the front end 13 of the negative pressure drainage tube and the front end 15 of the flushing tube;

6. Connect the front end 13 of the negative pressure drainage tube and the front end 15 of the flushing tube to the negative pressure source (negative pressure drainage device) and the flushing source (medication device or flushing device) respectively via the connecting conduit 17 . the

Using the visible negative pressure drainage and positive pressure drug delivery device, doctors can realize dynamic observation of wounds or skin grafts through the observation window 4 . Not only can it be treated at any time according to the situation, but it can also be used for scientific research of wound healing and skin grafting. the

This visible negative pressure drainage and positive pressure administration device moves negative pressure drainage tube 2 and flushing tube 3 from the center of upper surface 9 and lower surface 10 of PVA or PU sponge dressing 1 to 101 mm away from lower surface, so that negative pressure The pressure drainage tube 2 and the irrigation tube 3 are closer to the wound or the skin graft, further improving the effects of negative pressure drainage, administration of oxygen, and bandaging and fixation. the

The front end 13 of the negative pressure drainage tube, the front end 15 of the flushing tube, the rear end 14 of the negative pressure drainage tube and the rear end 16 of the flushing tube of the visible negative pressure drainage and positive pressure drug delivery device are all provided with detachable plugs 12, It is not only beneficial to maintain good negative pressure or positive pressure flushing, oxygenation or bandage fixation after the splicing of PVA or PU sponge dressing 1, but also helps to disconnect the negative pressure source or positive pressure source to maintain the negative pressure in PVA or PU sponge dressing 1 Or positive pressure, so that patients can move freely within a certain period of time, reducing the complications of long-term bed rest. the

Example 3

If the wound is large, there are difficulties in the connection between the negative pressure suction tube 2 and the irrigation tube 3 of each PVA or PU sponge dressing 1, resulting in flushing and medicine or oxygen having to diffuse through the sponge to reach another sponge dressing, and the effect of negative pressure suction is also limited. It will be significantly reduced, and it is necessary to overcome this defect by connecting the device in parallel, in series or in series and parallel:

With reference to the connection method in Figure 3, each piece of PVA or PU sponge dressing 1 is connected in parallel and in series;

When connected in parallel, each piece of dressing is in close contact with each other to form the closely adhering place 20 of the left side 7 and the right side 8 of the PVA or PU sponge dressing 1; its outer layer is fixed with a transparent adhesive film. Then the negative pressure drainage tube rear end 14 and the flushing tube rear end 16 are blocked with a plug 12; the negative pressure drainage tube front end 13 and the flushing tube front end 16 are respectively connected to the negative pressure source (negative Pressure drain) and irrigation source (administration device or irrigation device) connection. the

When multiple dressings are connected in parallel, the front end 13 of a negative pressure drainage tube is connected sequentially through the connecting conduit 17 and a branch of the three-way pipe 18, and the other branch of the three-way pipe 18 is connected to the connecting conduit with the front end 13 of another negative pressure drainage tube 17 connections to form the first parallel connection. Next, the above-mentioned three-way pipe 18 is connected to the connecting pipe 17 connecting another one or two negative pressure drainage tubes 2 through the connecting conduit 17 and another three-way pipe 18 to form a second parallel connection; by analogy, multiple The negative pressure suction tube 2 is finally merged into a three-way tube 18 after multiple parallel connections, and then connected to the negative pressure source through the connecting conduit 17 . The parallel connection mode of the flushing tube 3 is the same as that of the negative pressure drainage tube. The multiple flushing tubes 2 are finally merged into a tee pipe 18, and then connected to the flushing source (medication device or flushing device) through the connecting conduit 17. the

When connecting in series, insert the back end 14 of the negative pressure drainage tube and the back end 16 of the flushing tube of the previous PVA or PU sponge 1 into the front end 13 of the negative pressure drainage tube and the front end 15 of the flushing tube of the next PVA or PU sponge 1 respectively to form a connection 19 , the distance between the upper side 5 of the back piece of PVA or PU sponge dressing 1 and the lower side 6 of the previous piece of PVA or PU sponge dressing 1 is less than 5mm; after the connection is completed, the outer layer of the dressing is fixed with a transparent adhesive film. Then the negative pressure drainage tube rear end 14 and the flushing tube rear end 16 are blocked with a plug 12; The source (negative pressure drainage device) and irrigation source (administration device or irrigation device) are connected. the

When using in combination in series and parallel, taking three pieces of PVA or PU sponge dressing 1 as an example, two pieces can be connected in series and then connected in parallel with the other piece, or two pieces can be connected in parallel and then connected in series with the other piece. the

Connected in the above way, after the splicing of PVA or PU sponge dressing 1, the negative pressure drainage tube 2 and irrigation tube 3 can reach all parts of the wound (the furthest distance is not more than 1.5cm), so that after splicing multiple pieces of PVA or PU sponge dressing 1 The effects of negative pressure drainage, positive pressure flushing, administration of oxygen, and bandaging and fixation will not be reduced. the

If simple positive pressure administration or oxygen is required, after the PVA or PU sponge dressing 1 is completely sealed, and its outermost layer is reinforced with a bandage, etc., the negative pressure drainage tube 2 and irrigation tube 3 can be used to pressurize, drug or oxygen. the

If simple negative pressure drainage is required, after the PVA or PU sponge dressing 1 is completely sealed, negative pressure suction can be performed through the negative pressure drainage tube 2 and the irrigation tube 3 simultaneously or separately. the

If simultaneous or intermittent negative pressure drainage and positive pressure administration or oxygen are required, negative pressure drainage can be performed through the negative pressure drainage tube 2 and pressurized administration or oxygen can be performed through the flushing tube 3; At the same time, it is sucked by negative pressure 2 negative pressure through the negative pressure drainage tube. the

The negative pressure drainage end and the flushing end can also be placed at the two ends of the PVA or PU sponge material 1, that is, one end is flushed and the other end is negative pressure drainage, and the treatment effect is better. the

When needed, the final connection conduit 17 connected to the negative pressure drainage tube 2 can be blocked by a plug 12 or connected to a mobile negative pressure source, and the final connection conduit 17 connected to the irrigation tube 3 can be blocked by a plug 12 or connected to a flushing source (for drug device or flushing device), the patient can move freely while maintaining negative pressure drainage and/or positive pressure drug delivery or oxygen. the

Claims (8)

1. a visual negative pressure drainage and malleation doser, comprise: PVA or PU sponge dressing (1), negative-pressure drainage tube (2), syringe pipe (3), with plugging plug (12), it is characterized in that: have the negative-pressure drainage tube (2) that is no less than on PVA or the PU sponge dressing (1), syringe pipe (3) and observation window (4), negative-pressure drainage tube (2) and syringe pipe (3) are for there being the transparent hard gel pipe of a plurality of side openings (11), negative-pressure drainage tube front end (13), negative-pressure drainage tube rear end (14), syringe pipe front end (15), syringe pipe rear end (16) all has dismountable plugging plug (12), negative-pressure drainage tube (2) and syringe pipe (3) all penetrate from the upper side (5) of PVA or PU sponge dressing (1), after passing PVA or PU sponge dressing (1), pass from the downside (6) of PVA or PU sponge dressing (1), the upper surface (9) of PVA or PU sponge dressing (1) and the distance between the lower surface (10) are 8mm-9mm, negative-pressure drainage tube (2) and syringe pipe (3) are 1mm with the distance of the lower surface (10) of PVA or PU sponge dressing (1), observation window (4) runs through upper surface (9) and the lower surface (10) of PVA or PU sponge dressing (1), be evenly distributed on PVA or the PU sponge dressing (1), and observation window (4) and negative-pressure drainage tube (2) and syringe pipe (3) zero lap.

2. visual negative pressure drainage as claimed in claim 1 and malleation doser, it is characterized in that: the diameter of observation window (4) is 3mm-5mm, spacing between each observation window (4) is 2.0cm-3.0cm, is 2.0cm-3.0cm by the observation window (4) of side apart from the spacing of upper side (5) or downside (6) or left surface (7) or right flank (8).

3. negative pressure drainage as claimed in claim 1 and malleation doser, it is characterized in that: negative-pressure drainage tube (2) and syringe pipe (3) are alternately distributed.

4. visual negative pressure drainage as claimed in claim 1 and malleation doser, it is characterized in that: the spacing between the negative-pressure drainage tube (2) is 2.0cm-3.0cm, be 1.0cm-1.5cm by the negative-pressure drainage tube (2) of side apart from the spacing of left surface (7) or right flank (8), negative-pressure drainage tube (2) is 1mm with the distance of the lower surface (10) of PVA or PU sponge dressing (1).

5. visual negative pressure drainage as claimed in claim 1 and malleation doser, it is characterized in that: the spacing between the syringe pipe (3) is 2.0cm-3.0cm, be 1.0-1.5cm by the syringe pipe (3) of side apart from the spacing of left surface (7) or right flank (8), syringe pipe (3) is 1mm with the distance of the lower surface (10) of PVA or PU sponge dressing (1).

6. visual negative pressure drainage as claimed in claim 1 and malleation doser, it is characterized in that: negative-pressure drainage tube (2) is that the upper side (5) that a length equals PVA or PU sponge dressing (1) adds that to downside (6) distance 50mm-80mm, negative-pressure drainage tube front end (13) internal diameter are that 5mm-8mm, negative-pressure drainage tube rear end (14) external diameter are the transparent hard gel pipe of 5mm-8mm, can guarantee that negative-pressure drainage tube rear end (14) can insert negative-pressure drainage tube front end (13) and closely link to each other.

7. visual negative pressure drainage as claimed in claim 1 and malleation doser, it is characterized in that: syringe pipe (3) is that a length is that the upper side (5) of PVA or PU sponge dressing (1) adds that to downside (6) distance 50mm-80mm, syringe pipe front end (15) internal diameter are that 4mm-6mm, syringe pipe rear end (16) external diameter are the transparent hard gel pipe of 4mm-6mm, can guarantee that syringe pipe rear end (16) can insert syringe pipe front end (15) and closely link to each other.

8. visual negative pressure drainage as claimed in claim 1 and malleation doser, it is characterized in that: side opening (11) is evenly distributed on the tube wall of negative-pressure drainage tube (2) and syringe pipe (3), side opening staggers between (11) mutually, its spacing is 6mm-10mm, and the diameter of side opening (11) is the 1/3-1/2 of negative-pressure drainage tube (2) and syringe pipe (3) external diameter.

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