A simple negative pressure device for small wounds

Abstract

The present invention provides a simple negative pressure device for small wounds, which includes an adsorption head, a connecting tube, and an electric negative pressure device. The electric negative pressure device includes a three-way joint, a negative pressure sensor, and a drainage bottle. The adsorption head includes at least three adsorption sheets with a return force. The bottoms of the adsorption sheets are connected together to form a closed cavity. The closed cavity is connected to the first joint of the three-way joint through a connecting tube. The other two joints of the three-way joint are respectively connected to the drainage bottle and the negative pressure sensor. The upper ends of the adsorption sheets converge towards the center and form a cylindrical structure with an opening. When pressed at the upper end, the adsorption sheets unfold into a flat shape and have a return force to restore the original cylindrical structure. With the adsorption sheets with a return force of the adsorption head, the present invention can play an excellent role in skin grasping and gathering when the adsorption head is opened and attached to the skin. The skin grasping and gathering effects are good, the wound can be effectively contracted, the flexibility is good, and pressure injuries will not be caused. Moreover, the structure is simple, practical and economical, the healing cycle can be significantly shortened, and the patient experience can be enhanced.

Description

Technical Field

[0001] The present invention relates to the field of medical auxiliary devices, and particularly to a simple negative pressure device for small wounds. Background Art

[0002] Clinically, we often encounter some chronic wounds with a large bottom and a small opening or a deep bottom and a small opening, especially small wounds with exposed bone. For such wounds, our conventional approach is to apply a drainage strip and wait for granulation to grow slowly until the wound closes. For some experienced wound nurses, they may adopt the method of applying pressure with a bandage every time during dressing change to accelerate wound closure. However, this method also has the risk of overpressure affecting the blood supply of the affected limb. Both of the above methods rely on the growth of the patient's own tissues, which takes a long time and a large economic expenditure, and there may also be a possibility of wound deterioration during this period. Summary of the Invention

[0003] In view of this, the present invention provides a simple negative pressure device for small wounds. For chronic wounds with a large bottom and a small opening or a deep bottom and a small opening where granulation grows well, especially small wounds with exposed bone, the simple negative pressure device of the present invention can be used for simple negative pressure suction, so that the wound environment is always in a negative pressure state, accelerating the attraction of granulation growth, accelerating wound filling, and accelerating wound cavity closure. During the use of this simple negative pressure device, no dressing change is required. In comparison, the healing cycle can be significantly shortened, the patient experience is better, and it is more economical and practical.

[0004] A simple negative pressure device for small wounds includes a suction head, a connecting tube, and an electric negative pressure device. The electric negative pressure device includes a three-way joint, a negative pressure sensor, and a drainage bottle; the suction head includes at least three suction sheets with a return force. The bottoms of the at least three suction sheets with a return force are connected together to form a closed cavity. The closed cavity is connected to the first joint of the three-way joint through a connecting tube. The other two joints of the three-way joint are respectively connected to the drainage bottle and the negative pressure sensor. The upper ends of the at least three suction sheets with a return force converge towards the center and form a cylindrical structure with an opening. When pressed at the upper end, the suction sheets expand outwards to form a flat shape and have a return force to restore the original cylindrical structure.

[0005] Further, the suction sheet has a three-layer structure, which is sequentially a tearable film, a double-sided adhesive layer, and a PE layer from the inside to the outside. The double-sided adhesive layer bonds the tearable film and the PE layer together.

[0006] Further, the double-sided adhesive layer uses double-sided adhesive.

[0007] Further, it also includes a medical semi-permeable membrane, which is located directly below the suction head during use, and the central part passes through the connecting tube. The side of the medical semi-permeable membrane that can be pasted faces the suction head.

[0008] Further, the area of the medical semi-permeable membrane is 10 cm * 10 cm.

[0009] Further, a shut-off clip is installed on the connecting tube.

[0010] Further, the drainage bottle is driven by a micro electric air pump. The micro electric air pump and the negative pressure sensor are connected to a controller, and the controller is used to control the power of the micro electric air pump according to the air pressure value monitored by the negative pressure sensor, so that the drainage bottle reaches the required negative pressure.

[0011] Further, it also includes a negative pressure value adjustment switch connected to the micro electric air pump. The negative pressure value adjustment switch is used to manually control the power of the micro electric air pump according to the air pressure value monitored by the negative pressure sensor, so that the drainage bottle reaches the required negative pressure.

[0012] In the present invention, the adsorption sheet with a return force of the adsorption head can play an excellent role in grasping and gathering the skin when the adsorption head is opened and attached to the skin. It has good skin grasping and gathering effects, can effectively contract the wound, has good flexibility, will not cause pressure injuries, and has a simple, practical and economical structure. It can significantly shorten the healing cycle and enhance the patient experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the simple negative pressure device for small wounds of the present invention;

[0014] Figure 2 is a schematic connection diagram of the three-way joint, the drainage bottle and the negative pressure sensor in the present invention;

[0015] Figure 3 is Figure 1 an enlarged view of part A in

[0016] Figure 4 is a schematic structural diagram of the adsorption head when it is unfolded and used in the present invention.

[0017] In the figure: 1 - adsorption head, 2 - medical semi-permeable membrane, 3 - connecting tube, 4 - three-way joint, 5 - drainage bottle, 6 - negative pressure sensor, 7 - shut-off clip, 8 - transparent cover, 9 - negative pressure value adjustment switch, 10 - filter membrane, 11 - adsorption head, 111 - tearable film, 112 - double-sided adhesive layer, 113 - polyethylene (PE) layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0019] Please refer to Figure 1 and Figure 2 , one embodiment of the simple negative pressure device for small wounds of the present invention includes an adsorption head 1, a medical semi-permeable membrane 2, a connecting tube 3, and an electric negative pressure device. The electric negative pressure device includes a three-way joint 4, a drainage bottle 5, and a negative pressure sensor 6. The drainage bottle 5 is driven by a micro electric air pump. The micro electric air pump and the negative pressure sensor 6 are connected to a controller. The controller controls the power of the micro electric air pump according to the air pressure value monitored by the negative pressure sensor 6 to achieve the required negative pressure. In this embodiment, there is also a negative pressure value adjustment switch 9 connected to the micro electric air pump. The negative pressure value adjustment switch 9 can manually control the power of the micro electric air pump according to the air pressure value monitored by the negative pressure sensor 6 to achieve the required negative pressure. The outer cover of the drainage bottle 5 is provided with a transparent cover 8, and the transparent cover 8 is used to prevent the drainage bottle 5 from loosening and facilitate observing the nature and quantity of the drainage fluid in the drainage bottle.

[0020] In the closed state, the adsorption head 1 is a cylindrical structure with a diameter of 1 cm, including at least three adsorption sheets 11 with a return force. The edges of the at least three adsorption sheets 11 with a return force are round and smooth. When opened, it resembles a petal. Their bottoms are connected together to form a closed cavity. The closed cavity is connected to the first joint of the three-way joint 4 through the connecting tube 3. The other two joints of the three-way joint 4 are respectively connected to the drainage bottle 5 and the negative pressure sensor 6. A filter membrane 10 is provided at the joint of the three-way joint 4 connecting the negative pressure sensor 6 to prevent the drainage fluid from contaminating the negative pressure sensor 6.

[0021] The upper ends of the at least three adsorption sheets 11 with a return force converge towards the center and form an opening. When pressed at the upper end, the adsorption sheets 11 can expand outward into a flat shape, as Figure 3 shown.

[0022] Please refer to Figure 3 in combination. The adsorption sheet 11 is a three-layer structure, which is sequentially composed of a tearable film 111, a double-sided adhesive layer 112, and a polyethylene (PE) layer 113 from the inside out. The polyethylene (PE) layer 113 has a certain flexibility and returnability to ensure that it can automatically recover after being opened without external force. When the product is opened and attached to the skin (as Figure 4 shown), it can play an excellent role in grasping the skin and pulling it back, thereby shrinking the closed wound. The middle double-sided adhesive layer 112 can use double-sided adhesive.

[0023] The connecting tube 3 is provided with a closing clip 7 , which can be made of PE material. The closing clip 7 is used when replacing the drainage bottle 5 for absorbing wound exudate, so that the wound is always kept in a negative pressure state.

[0024] The medical semipermeable membrane 2 is located directly below the adsorption head 1, with an area of about 10cm*10cm. The center part passes through the connecting tube 3. The adhesive side of the medical semipermeable membrane 2 faces the adsorption head 1, which is used to assist in fixing the adsorption sheet 11 to further ensure that the wound is in a closed state.

[0025] The scope of application of the present invention is as follows: 1. It is mainly used for small sinus tracts with good granulation growth or undermining wounds with small wound openings; 2. The wound opening is a circular wound within 0.5cm*0.5cm or a longitudinal wound within 0.5cm*1cm.

[0026] Specific operation method:

[0027] (1) Clean the wound surface and remove exudate;

[0028] (2) Use alcohol gauze to clean the skin with a diameter of more than 10 cm around the wound;

[0029] (3) Cut the center of the 10 cm*10 cm medical semipermeable membrane 2 to leave a wound opening, and stick it around the wound;

[0030] (4) Open the suction head 1 of the product, tear off the inner tearable film 111, and make the center of the suction head 1 (the petal pedicle) fit the wound;

[0031] (5) Tear off the 10 cm*10 cm medical semipermeable membrane 2 on the connecting tube 3 below the adsorption head 1, and tightly fix the adsorption head 1;

[0032] (6) The other end of the connecting tube 3 is connected to the tee 4, one end of the tee 4 is connected to the 10 ml drainage bottle 5, and the other end is connected to the negative pressure sensor 6 to adjust the required negative pressure;

[0033] (7) When replacing the drainage bottle 5, first close the closing clamp 7 on the connecting tube 3 to ensure a continuous negative pressure state, then open the transparent cover 8, pull out the contaminated drainage bottle 5, and take out the tee 4, then replace it with a new tee, connect the drainage tube port and the negative pressure sensor port, then push the new drainage bottle horizontally onto one end of the tee, finally close the transparent cover 8 and open the closing clamp 7.

[0034] The present invention has the following advantages:

[0035] 1. Small, beautiful, flexible, and will not cause pressure damage;

[0036] 2. To prevent cross-infection, only the three-way connector 4 and the drainage bottle 5 need to be replaced each time, which is simple, easy to implement, and highly operable;

[0037] 3. It has good skin grasping and gathering effects and can effectively contract the wound;

[0038] 4. It is economical and highly acceptable to patients.

[0039] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A simple negative pressure device for small wounds, characterized in that: It includes a suction head, a connecting pipe, and an electric negative pressure device. The electric negative pressure device includes a three-way joint, a negative pressure sensor, and a drainage bottle. The suction head includes at least three suction sheets with a return force. The bottoms of the at least three suction sheets with a return force are connected together to form a closed cavity. The closed cavity is connected to the first joint of the three-way joint through the connecting pipe. The other two joints of the three-way joint are respectively connected to the drainage bottle and the negative pressure sensor. The upper ends of the at least three suction sheets with a return force converge towards the center and form a cylindrical structure with an opening. When pressed at the upper end, the suction sheets expand outwards to be flat and have a return force to restore the original cylindrical structure. The suction sheet is a three-layer structure, which is sequentially a tearable film, a double-sided adhesive layer, and a PE layer from the inside out. The double-sided adhesive layer bonds the tearable film and the PE layer together.

2. The simple negative pressure device for small wounds according to claim 1, wherein: The double-sided adhesive layer uses double-sided adhesive.

3. The simple negative pressure device for small wounds according to claim 1, characterized in that: It further includes a medical semi-permeable membrane, which is located directly below the suction head during use, and the central part passes through the connecting pipe. The side of the medical semi-permeable membrane that can be pasted faces the suction head.

4. The simple negative pressure device for small wounds according to claim 3, wherein: The area of the medical semi-permeable membrane is 10 cm * 10 cm.

5. The simple negative pressure device for small wounds according to any one of claims 1-4, characterized in that: A shut-off clip is installed on the connecting pipe.

6. The simple negative pressure device for small wounds according to claim 1, characterized in that: The drainage bottle is driven by a micro electric air pump. The micro electric air pump and the negative pressure sensor are connected to a controller. The controller is used to control the power of the micro electric air pump according to the air pressure value monitored by the negative pressure sensor, so that the drainage bottle reaches the required negative pressure.

7. The simple negative pressure device for small wounds according to claim 6, characterized in that: It further includes a negative pressure value adjustment switch connected to the micro electric air pump. The negative pressure value adjustment switch is used to manually control the power of the micro electric air pump according to the air pressure value monitored by the negative pressure sensor, so that the drainage bottle reaches the required negative pressure.

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