CN213347082U - Pressure visual manual negative pressure device applied to high negative pressure closed drainage technology - Google Patents
Pressure visual manual negative pressure device applied to high negative pressure closed drainage technology Download PDFInfo
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- CN213347082U CN213347082U CN202021232876.6U CN202021232876U CN213347082U CN 213347082 U CN213347082 U CN 213347082U CN 202021232876 U CN202021232876 U CN 202021232876U CN 213347082 U CN213347082 U CN 213347082U
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Abstract
The utility model relates to a pressure visual manual negative pressure device applied to high negative pressure closed drainage technology, which comprises a negative pressure tank, an air pressure indicator, an air pump and a valve communicated with a drainage tube; the detection end of the air pressure indicator and the air suction opening of the air suction cylinder penetrate into the negative pressure tank from the top cover of the negative pressure tank, and the liquid outlet end of the valve is communicated into the tank; one end of the air pumping cylinder penetrates into the air pumping rod, and the other end of the air pumping cylinder is provided with a tip; a piston is arranged at the inner end of the air pumping rod, an elastic sealing ring which is tightly attached to the cylinder wall is annularly arranged on the outer ring of the piston, and the rod body of the air pumping rod is in clearance fit with one end of the air pumping cylinder; an air inlet one-way valve is arranged in the sharp nozzle, and the top cover is connected to the open opening of the tank in a sealing mode through threads. The beneficial effects of the utility model are that can provide portable negative pressure suction source when guaranteeing that the negative pressure produces the quality.
Description
Technical Field
The utility model relates to a closed negative pressure drainage technique specifically is a visual manual vacuum apparatus of pressure who is applied to high negative pressure closed drainage technique.
Background
The number of patients with chronic complex wounds is increasing due to changes in population architecture such as aging, increased numbers of patients with diabetes and obesity. While technological improvements in the treatment of wounds and burns have been able to save lives for patients with open lesions in the abdomen and large skin defects, the treatment of malignant tumors by advanced surgical and radiological means has also increased the complexity of the wound bed.
In the face of this series of daunting wounds, doctors have been searching for methods that can promote cell proliferation repair during the healing process of wounds for a long time. They initially placed their efforts on growth factors, but overall they had little effect on promoting wound healing. Based on the principle of promoting wound healing in a humid environment proposed by Winter, doctors adopt methods such as foam, hydrogel, cleaning agents, alginate, local antibacterial dressings and the like to promote wound healing. Argenta and Morykwas began to introduce negative pressure wound therapy techniques early in the 90 s of the 20 th century and first published related papers in 1997. The principle of the closed negative pressure drainage technology is already accepted by the public in the form of surgical negative pressure wound treatment technology.
The physical mechanism of negative pressure: the atmosphere on earth generates air pressure to human body. Astronauts need to wear compression suits to live in space. At sea level, 1 atmosphere corresponds to 760 mm Hg. According to the ideal gas law: PV ═ nRT, where P represents gas pressure; v represents a volume; n represents the number of gas molal; r represents a gas pressure constant; t is temperature in degrees Kelvin. Since V, n, R and T are all positive numbers, the P value is also determined to be a positive number. The term negative pressure is not appropriate from a professional point of view. We use gauge pressure, i.e. the difference between atmospheric pressure and system pressure, to measure pressure values. In the vacuum state, the measured pressure is relatively lower than atmospheric pressure, so it is referred to in the literature as negative pressure (gauge pressure). In pressurized cabins or in atmospheric pressures of denver, colorado, etc., close to 640mm of mercury, i.e., -125mm of mercury gauge pressure. It is clear that under such pressure the wound does not heal as well as under sea level pressure, so we can conclude that pressure difference is a key factor in promoting wound healing.
Negative pressure wound treatment products are now mainly composed of: a pipeline connecting the liquid collecting bottle and the negative pressure source, and a foam dressing contacting with the wound surface and transmitting the negative pressure. When in use, the wound surface must be completely sealed to maintain the negative pressure state, otherwise, air can permeate into the wound surface to dry the environment of the wound surface. Typically, the dressing is a porous polyurethane foam, which is hydrophobic and will be destroyed by excessive flow of negative pressure. Other consumables such as gauze, polyvinyl alcohol sponge, corrugated polymer and the like can transmit negative pressure to the wound surface, play a role in drainage, form micro deformation on the wound surface, and pull the skin from the periphery to the center.
The closed negative pressure drainage technology has the following characteristics: 1. a continuous closed state. 2. A continuous high negative pressure.
A common difficulty in the application of closed negative pressure drainage techniques is poor patient compliance. The main reasons are as follows: firstly, active high negative pressure is needed, the movement of a patient is limited, and the patient needs to be hospitalized for a long time. ② no negative pressure source exists for disabled people in nursing homes or homes. And thirdly, the patients with small-area chronic wound surfaces cannot tolerate long-time movement limitation and hospitalization.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and solve the problem that the closed negative pressure drainage is difficult to be matched with the patient to move.
In order to achieve the purpose of the utility model, a pressure visual manual negative pressure device applied to the high negative pressure closed drainage technology is provided, which comprises a negative pressure tank, an air pressure indicator, an air pump and a valve communicated with a drainage tube; the detection end of the air pressure indicator and the air suction opening of the air suction cylinder penetrate into the negative pressure tank from the top cover of the negative pressure tank, and the liquid outlet end of the valve is communicated into the tank; one end of the air pumping cylinder penetrates into the air pumping rod, and the other end of the air pumping cylinder is provided with a tip; a piston is arranged at the inner end of the air pumping rod, an elastic sealing ring which is tightly attached to the cylinder wall is annularly arranged on the outer ring of the piston, and the rod body of the air pumping rod is in clearance fit with one end of the air pumping cylinder; an air inlet one-way valve is arranged in the tip; the top cap is connected to the open mouth of the can by a screw seal.
The negative pressure tank can be composed of a tank and a top cover for sealing and plugging the tank. The gap between the air pumping rod body and the air pumping cylinder forms an air outlet, and the top of the sharp nozzle is an air pumping hole. One end of the air pumping cylinder can be arranged in an end cover mode.
Preferably, the air pressure indicator is a sleeve with one end communicated to the tank, an indication column penetrates into the sleeve in a sliding manner, the outer wall of the indication column is tightly attached to the inner wall of the sleeve, and the bottom of the indication column is connected with the bottom end of the sleeve through a spring; and an air pressure indicating mark is arranged on the outer wall of the indicating column along the length direction of the indicating column.
The air pressure indicating mark referred to herein moves with the indicating post within the sleeve.
Preferably, the air pressure indicator mark is a red color block, a yellow color block and a green color block which are sequentially arranged along the indicator column.
The color blocks are connected with each other, but not fused with each other.
Preferably, the sleeve is vertically arranged.
The casing tube is vertically arranged, and the indicating column is vertically moved up and down.
Preferably, the inner space of the negative pressure tank is divided into a gas cavity and a liquid storage cavity by a waterproof and breathable partition plate; the air pumping end of the air pumping cylinder is communicated to the air cavity, and the liquid outlet end of the valve is communicated to the liquid storage cavity.
During the air exhaust process, the negative pressure can penetrate through the partition plate and be transmitted to the liquid storage cavity.
Preferably, the edge of the partition is fixed under the top cover.
The baffle plate as referred to herein is snap-fitted to the top cover in a bowl-like configuration.
Preferably, the detection end of the air pressure indicator is communicated to the liquid storage cavity.
The sensing end of the air pressure indicator referred to herein may be an end of the sleeve.
When the air pumping rod pumps air outwards, the elastic sealing ring is sealed with the cylinder wall, and the air is pumped into the air pumping cylinder. When the air suction rod is pressed inwards, the air inlet one-way valve closes the passage, and the elastic sealing ring cannot be sealed with the cylinder wall due to the increase of air pressure, so that air is discharged from the air outlet, and a manual air suction step is completed. After a plurality of manual air pumping steps are circulated, the air pressure indicator indicates the pressure state in the tank, and when a set negative pressure value is reached, the valve can be opened, so that the drainage tube and the closed wound surface are subjected to negative pressure suction.
When the negative pressure state in the tank is achieved through air suction, the indicating columns are gradually sucked into the compression or extension springs, and the air pressure indicating marks on the indicating columns can be respectively and gradually aligned with the top end of the sleeve, so that the effect of indicating the current negative pressure condition in the tank is achieved.
When the indicating column is gradually sucked, the color block on the indicating column moves relative to the sleeve, and when the aligned position of the top end of the sleeve crosses the boundary of the color block, the negative pressure state reached in the tank can be conveniently and obviously identified.
When the sleeve pipe of vertical setting is adopted, its and indicate the gap between the post comparatively even, be difficult to take place to block.
Through fixing the baffle with the top cap, made things convenient for the dismantlement of baffle to wash, also easily replaced simultaneously.
Through with the sense terminal intercommunication of atmospheric pressure indicator is to stock solution chamber in the jar, can measure the atmospheric pressure of the stock solution part in the jar more accurately, and can not receive the influence of structures such as baffle.
The beneficial effects of the utility model are that can provide portable negative pressure suction source when guaranteeing that the negative pressure produces the quality.
Drawings
Fig. 1 is a top view of a pressure visual manual negative pressure device applied to the high negative pressure closed drainage technology of the present invention;
fig. 2 is a partial sectional view of the air pressure indicator of the manual negative pressure device with visible pressure according to the present invention;
fig. 3 is a partial cross-sectional view of the air pumping cylinder of the pressure-visible manual negative pressure device of the present invention;
fig. 4 is a schematic diagram of a first embodiment of a partition plate of the manual negative pressure device with visible pressure according to the present invention;
fig. 5 is a schematic diagram of a partition board arrangement of a second embodiment of the manual negative pressure device with visible pressure according to the present invention;
fig. 6 is a front schematic view of the pressure-visible manual negative pressure device of the present invention;
wherein:
1-negative pressure tank 11-top cover 12-tank
2-air pressure indicator 21-indicating column 22-spring
23-air pressure indication mark 3-air pump cylinder 31-air pump rod
311-piston 312-elastic sealing ring 32-tip
321-air inlet one-way valve 4-drainage tube 5-valve
6-baffle
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
The pressure visual manual negative pressure device applied to the high negative pressure closed drainage technology shown in fig. 1 to 6 comprises a negative pressure tank 1, an air pressure indicator 2, an air suction cylinder 3 and a valve 5 communicated to a drainage tube 4; the detection end of the air pressure indicator 2 and the air suction port of the air suction cylinder 3 penetrate into a tank 12 from a top cover 11 of the negative pressure tank 1, and the liquid outlet end of the valve 5 is communicated into the tank 12; one end of the air pumping cylinder 3 penetrates into the air pumping rod 31, and the other end of the air pumping cylinder is provided with a tip 32; a piston 311 is arranged at the inner end of the air pumping rod 31, an elastic sealing ring 312 which is tightly attached to the cylinder wall is arranged around the outer ring of the piston 311, and the rod body of the air pumping rod 31 is in clearance fit with one end of the air pumping cylinder 3; an air inlet one-way valve 321 is arranged in the sharp nozzle 32; the top cap 11 is connected to the open mouth of the can 12 by screw sealing. The sharp mouth 32 is an air suction opening.
According to the illustration of fig. 2, the air pressure indicator 2 is a vertical sleeve with one end communicated to the tank 12, an indication column 21 is slidably arranged in the sleeve, the outer wall of the indication column 21 is closely attached to the inner wall of the sleeve, and the bottom of the indication column 21 is connected with the bottom end of the sleeve through a spring 22; an air pressure indicating mark 23 is arranged on the outer wall of the indicating column 21 along the length direction. The air pressure indicating mark 23 is a red color block, a yellow color block and a green color block which are sequentially arranged along the indicating column.
As shown in fig. 4 to 5, the space in the negative pressure tank 1 is divided into a gas cavity and a liquid storage cavity by a waterproof and breathable partition plate 6; the air pumping end of the air pumping cylinder 3 is communicated with the air cavity, and the liquid outlet end of the valve 5 is communicated with the liquid storage cavity. The detection end of the air pressure indicator 2 is communicated to the liquid storage cavity.
According to a first embodiment of the manual negative pressure drainage device shown in fig. 4, the partition 6 is vertically fixed in the tank 12, and divides the inside of the tank 12 into a whole.
According to a second embodiment of the manual vacuum drainage device shown in fig. 5, the edge of the partition 6 is fixed under the top cover 11.
The specific use recommendation steps are as follows:
1. the top lid 11 and the can 12 are checked for tightness.
2. It is checked whether the valve 5 is in the "off" state.
3. The suction rod 31 is continuously drawn.
4. Indicating that the column 21 is slowly sinking to the target set point.
5. Is connected with an external drainage tube 4.
6. The valve 5 is rotated to the "on" state.
7. And after the liquid in the liquid storage cavity is full, pouring the liquid out, and repeating the steps 1-6.
The principle is that the interior of the tank 12 reaches a negative pressure state through continuous drawing action, the negative pressure is transmitted to the liquid storage cavity through the small holes on the partition plate 6, the indicating column 21 is gradually sucked, the display sequence is red, yellow and green, and the target set negative pressure value is reached when the indicating column sinks to a green area at the top of the sleeve. The outer drainage tube 4 is connected with the closed wound surface, and the valve 5 is rotated to a 'through' state to complete continuous closed negative pressure drainage. Liquid flows into the liquid storage cavity, negative pressure is gradually reduced, the indicating column 21 is slowly lifted, the display sequence is green, yellow and red, and the air pumping cylinder 3 can be continuously pulled to enable the indicating column 21 to be restored to the original set position again.
The pressure interval of the pressure indication mark displayed on the indication column 21 is a red area (0mmHg to-70 mmHg), a yellow area (-71mmHg to-140 mmHg), and a green area (-141mmHg to-210 mmHg).
And (3) abnormal conditions and handling:
the indicator column 21 does not sink when pumped down. And (3) treatment: firstly, whether the cover body 11 and the tank body are fastened or not is checked. ② whether the valve 5 is in an off state. Checking whether the drainage tube 4 is connected to slip or leak gas, and checking whether the wound surface covering film is separated or leak gas.
The device is recommended to be applied to the closed negative pressure drainage technology. Open drainage, low pressure drainage of the pleuroperitoneal cavity, etc. are not recommended.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, and that various changes and modifications may be made, which are within the scope of the appended claims.
Claims (7)
1. A pressure visual manual negative pressure device applied to a high negative pressure closed drainage technology is characterized by comprising a negative pressure tank, an air pressure indicator, an air suction cylinder and a valve communicated with a drainage tube; the detection end of the air pressure indicator and the air suction opening of the air suction cylinder penetrate into the negative pressure tank from the top cover of the negative pressure tank, and the liquid outlet end of the valve is communicated into the tank; one end of the air pumping cylinder penetrates into the air pumping rod, and the other end of the air pumping cylinder is provided with a tip; a piston is arranged at the inner end of the air pumping rod, an elastic sealing ring which is tightly attached to the cylinder wall is annularly arranged on the outer ring of the piston, and the rod body of the air pumping rod is in clearance fit with one end of the air pumping cylinder; an air inlet one-way valve is arranged in the tip; the top cap is connected to the open mouth of the can by a screw seal.
2. The manual negative pressure device with visual pressure as claimed in claim 1, wherein the air pressure indicator is a sleeve with one end communicated to the tank, an indicating column is slidably arranged in the sleeve, the outer wall of the indicating column is closely attached to the inner wall of the sleeve, and the bottom of the indicating column is connected with the bottom end of the sleeve through a spring; and an air pressure indicating mark is arranged on the outer wall of the indicating column along the length direction of the indicating column.
3. The visual manual vacuum device of pressure of claim 2, wherein the air pressure indicator marks are red, yellow, green color blocks arranged along the indicator column in sequence.
4. The visual manual vacuum of claim 2 wherein the sleeve is vertically disposed.
5. The manual negative pressure device with visible pressure of claim 1, wherein the inner space of the negative pressure tank is divided into a gas cavity and a liquid storage cavity by a waterproof and breathable partition plate; the air pumping end of the air pumping cylinder is communicated to the air cavity, and the liquid outlet end of the valve is communicated to the liquid storage cavity.
6. The visual manual vacuum of claim 5 wherein the edge of the diaphragm is secured under the top cover.
7. The visual manual vacuum of claim 5 wherein the sensing end of the air pressure indicator is connected to the reservoir chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021232876.6U CN213347082U (en) | 2020-06-29 | 2020-06-29 | Pressure visual manual negative pressure device applied to high negative pressure closed drainage technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021232876.6U CN213347082U (en) | 2020-06-29 | 2020-06-29 | Pressure visual manual negative pressure device applied to high negative pressure closed drainage technology |
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| CN213347082U true CN213347082U (en) | 2021-06-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111803723A (en) * | 2020-06-29 | 2020-10-23 | 上海市杨浦区殷行社区卫生服务中心 | Pressure visual manual negative pressure system applied to high negative pressure closed drainage technology |
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2020
- 2020-06-29 CN CN202021232876.6U patent/CN213347082U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111803723A (en) * | 2020-06-29 | 2020-10-23 | 上海市杨浦区殷行社区卫生服务中心 | Pressure visual manual negative pressure system applied to high negative pressure closed drainage technology |
| CN111803723B (en) * | 2020-06-29 | 2024-05-14 | 上海市杨浦区殷行社区卫生服务中心 | Pressure visual manual negative pressure system applied to high negative pressure closed drainage technology |
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