CN222341663U

CN222341663U - A portable negative pressure device

Info

Publication number: CN222341663U
Application number: CN202420843799.XU
Authority: CN
Inventors: 李立; 汪磊; 夏熙明; 刘洁; 谢雷
Original assignee: Wuhan VSD Medical Science and Technology Co Ltd
Current assignee: Wuhan VSD Medical Science and Technology Co Ltd
Priority date: 2024-04-22
Filing date: 2024-04-22
Publication date: 2025-01-14
Anticipated expiration: 2034-04-22

Abstract

The utility model relates to the technical field of medical devices, and in particular to a portable negative pressure device. The device includes a sealing layer, a liquid absorption layer and a manual air pumping mechanism; a liquid absorption layer is arranged below the sealing layer, and a through hole is arranged on the sealing layer; one end of the manual air pumping mechanism is fixed on the sealing layer, and a pumping cavity is arranged in the manual air pumping mechanism, and the pumping cavity is connected with the through hole; the manual air pumping mechanism is also provided with a one-way structure that allows gas to flow to the outside through the liquid absorption layer and the pumping cavity in sequence. The present application provides continuous negative pressure through a manual air pumping mechanism, and has the advantages of easy operation, low cost, small size, light weight and safe use. It can reduce the requirements on the technical level of the operator, facilitate the carrying of the negative pressure device and the movement of the patient, and improve the comfort of the patient; the liquid absorption layer absorbs the wound exudate, eliminating the drainage tube, liquid storage bag or liquid storage bottle and other structures, and further reducing the cost.

Description

Portable negative pressure device

Technical Field

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

Background

Negative pressure drainage treatment is a treatment method for promoting wound healing by pumping out exudates in a wound through a negative pressure device. In negative pressure drainage treatment, a doctor can place a negative pressure closed system around a wound, and the negative pressure closed system is connected to a negative pressure pump through a pipeline, so that exudates in the wound can be effectively removed through continuous negative pressure suction, infection risk is reduced, and wound healing is promoted.

At present, the operation of negative pressure drainage depends on a negative pressure closed system with larger volume, and the negative pressure closed system needs professional personnel to operate and manage, so that the negative pressure drainage treatment has the following defects that the cost of negative pressure drainage equipment and related consumables is relatively high, the technical requirements on medical staff are high in the negative pressure drainage treatment, the negative pressure source of the traditional negative pressure drainage treatment is often an active product with large volume, and the negative pressure source is heavy and can limit the movement of patients during treatment.

Thus, there is still a need for a portable negative pressure device suitable for use in a negative pressure wound therapy system.

Disclosure of utility model

The utility model aims to provide a portable negative pressure device which is low in cost, small in size, light in weight and simple to operate.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a portable negative pressure device comprises a sealing layer, a liquid absorbing layer and a manual air suction mechanism;

The manual air suction mechanism is characterized in that a liquid absorption layer is arranged below the sealing layer, a through hole is formed in the sealing layer, one end of the manual air suction mechanism is fixed on the sealing layer, an air suction cavity is arranged in the manual air suction mechanism and communicated with the through hole, and a one-way structure enabling gas to flow to the outside sequentially through the liquid absorption layer and the air suction cavity is further arranged in the manual air suction mechanism.

According to the utility model, the liquid absorbing layer is arranged in the dressing, so that seepage liquid which should be absorbed in the liquid storage bag or the liquid storage bottle is absorbed in the liquid absorbing layer, an additional liquid storage device is saved, and the volume of the device is reduced; compared with a large-volume negative pressure source type negative pressure closed drainage device, the size and weight of the negative pressure closed drainage device are further reduced by integrating the manual air suction mechanism on the dressing, the negative pressure closed drainage device can be convenient for patients to move in the negative pressure closed drainage treatment effect, the portability of products is improved, and the cost of the device is effectively reduced.

Further, the manual air extraction mechanism comprises a fixing part and an air extraction part which are communicated with each other, and the air extraction cavity is arranged in the air extraction part;

The one-way structure comprises a one-way valve I, and the one-way valve I is arranged in the fixing part.

The check valve has a simple structure and ingenious design, on one hand, the manual air suction mechanism can enable air to flow from the liquid suction layer to the manual air suction mechanism when air is extracted, but cannot reversely flow from the external air into the liquid suction layer, on the other hand, the check valve plays a role of a sealing plug, and continuously blocks the external air under the condition that the inside of the sealing layer is negative pressure after air suction is finished, so that the continuous negative pressure state in the device is ensured.

Further, the air extraction part is arranged as an air bag, the air extraction cavity is formed in the air bag, an air extraction opening of the air extraction cavity is communicated with the through hole, and an air outlet of the air extraction cavity is communicated with the outside.

The gasbag is convenient for use and operation, and the simple operation nature is strong.

Further, the air bag is an extrusion type air bag or a push-pull type air bag.

The air bag can be an existing extrusion type or push-pull type air bag, and only the deformation of the air suction cavity can be realized to form gas change.

Further, the fixing part is provided with a sucker which is fixedly connected with the sealing layer, and the through hole, the sucker and the air extraction opening of the air extraction cavity are communicated.

The sealing layer is connected through the sucker, the contact area of the two is increased, so that the connection is more stable.

Further, the one-way structure further comprises a second one-way valve, and the second one-way valve is arranged at the exhaust port of the air pumping cavity.

The second check valve can continuously block external air under the condition that the inside of the air extraction cavity is negative pressure after air extraction is finished, and the inside of the device is ensured to be in a continuous negative pressure state.

Further, a support conductive layer is included, the support conductive layer being disposed between the sealing layer and the underside of the wicking layer.

The supporting conductive layer can improve the deformation space of the device when the device pumps negative pressure and improve the conductivity of wound tissue fluid, and meanwhile, the supporting conductive layer can also absorb certain liquid amount and improve the whole liquid storage amount of the device.

Further, a transmission hole is formed in the liquid absorbing layer, and the transmission hole corresponds to the through hole in position.

The transmission hole can prevent the liquid absorbing layer 2 from blocking the through hole 111, so that the conductivity of wound tissue liquid is improved, the resistance of manual negative pressure pumping is reduced, and the operation convenience is improved.

The medical silicone gel comprises a sealing layer, a contact layer, a liquid absorbing layer, a breathable liquid-permeable medical silicone gel layer and a liquid absorbing layer, wherein the liquid absorbing layer is arranged between the sealing layer and the contact layer.

The contact layer is a breathable liquid-permeable medical silicone gel layer, can prevent the formation of a hyperplastic scar and is beneficial to the recovery of a wound surface.

Further, the sucking disc is clamped and fixed on the sealing layer.

The sucker is detachably fixed on the sealing layer, and has the purposes of being convenient to replace and saving the space of the device.

The utility model has the beneficial effects that:

the utility model provides a portable negative pressure device which comprises a sealing layer, a liquid absorbing layer and a manual air suction mechanism;

Compared with the existing negative pressure drainage device, the negative pressure drainage device has the advantages of convenience in operation, low cost, small size, light weight, safety in use and the like by providing continuous negative pressure through the manual air suction mechanism, can reduce the requirements on the technical level of operators, is convenient for carrying the negative pressure device and moving a patient, improves the comfort of the patient, and further reduces the cost by eliminating the structures such as a drainage tube, a liquid storage bag or a liquid storage bottle by absorbing wound exudate through the liquid absorption layer.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a portable negative pressure device according to an embodiment of the present utility model when an air bag is of a squeeze type;

Fig. 2 is a schematic structural diagram of the portable negative pressure device according to the first embodiment of the present utility model when the air bag is push-pull;

fig. 3 is a schematic structural diagram of a portable negative pressure device according to a second embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a portable negative pressure device according to a third embodiment of the present utility model.

Icon:

1-sealing layer, 111-through hole, 2-liquid absorbing layer, 21-transmission hole, 3-manual air suction mechanism, 31-fixing part, 32-air suction part, 321-air suction cavity, 4-one-way valve I, 5-one-way valve II, 6-supporting conducting layer and 7-contact layer.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the description of the present utility model, the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that, in the description of the present utility model, the terms "connected" and "mounted" should be understood in a broad sense, and for example, they may be fixedly connected, detachably connected, or integrally connected, may be directly connected, may be connected through an intermediate medium, and may be mechanically connected or electrically connected. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The existing negative pressure drainage device has the defects of high cost, large volume, high technical requirements on medical staff and the like, and brings much inconvenience to the treatment of patients.

Example 1

Based on the problems existing in the prior art, a first embodiment of the present utility model provides a portable negative pressure device, referring to fig. 1, the device includes a sealing layer 1, a liquid absorbing layer 2 and a manual air pumping mechanism 3;

A liquid absorbing layer 2 is arranged below the sealing layer 1, a through hole 111 is arranged on the sealing layer 1, one end of a manual air suction mechanism 3 is fixed on the sealing layer 1, an air suction cavity 321 is arranged in the manual air suction mechanism 3, the air suction cavity 321 is communicated with the through hole 111, and a one-way structure which enables gas to flow to the outside sequentially through the liquid absorbing layer 2 and the air suction cavity 321 is also arranged in the manual air suction mechanism 3.

When the liquid absorbing and sucking device is used, firstly, the liquid absorbing layer 2 is aligned to a wound surface, the sealing layer 1 is adhered or pressed on skin at the wound surface, the sealing layer 1 is covered above the liquid absorbing layer 2, then, at least part of gas in the air sucking cavity 321 is discharged to the outside through the manual air sucking mechanism 3, the air sucking cavity 321 is in a negative pressure state, at the moment, the gas between the sealing layer 1 and the skin continuously enters the air sucking cavity 321 through the through holes 111 under the suction force of the air sucking cavity 321, the space between the sealing layer 1 and the skin is in a negative pressure state, and the liquid absorbing layer 2 between the sealing layer 1 and the skin is promoted to absorb liquid exuded from the wound surface.

In the device, a unidirectional structure is arranged in the manual air suction mechanism 3, so that the air flows to the outside through the liquid absorbing layer 2 and the air suction cavity 321 in sequence, and after part or all of the air in the air suction cavity 321 is manually sucked out, the air in the air suction cavity 321 cannot be supplemented because the air outside cannot enter the air suction cavity 321, and the inside of the device is continuously provided with slight negative pressure. When the device is used, the wound permeate can be continuously absorbed only by pumping the pumping cavity 321 outwards once, frequent operation is not needed, and the healing of tissues at the bottom of the wound is facilitated.

The liquid absorbing layer 2 is arranged in the dressing, seepage liquid which is originally absorbed in a liquid storage bag or a liquid storage bottle is absorbed in the liquid absorbing layer 2, an additional liquid storage device is saved, the size of the device is reduced, compared with a negative pressure source type negative pressure closed drainage device with large size, the size and weight of the negative pressure closed drainage device are further reduced by integrating the manual air suction mechanism 3 on the dressing, the patient can conveniently move in the effect of negative pressure closed drainage treatment, the portability of a product is improved, the cost of the device is effectively reduced, the device can flow from the liquid absorbing layer 2 to the manual air suction mechanism 3 after manual air suction through the arrangement of a one-way mechanism in the manual air suction mechanism 3, the air cannot reversely flow into the liquid absorbing layer 2 from outside air, effective negative pressure sealing is further realized, and meanwhile, the outside air cannot enter the air suction cavity 321, so that the device has a continuous negative pressure drainage effect.

Compared with the existing negative pressure drainage device, the negative pressure drainage device has the advantages of convenience in operation, low cost, small size, light weight, safety in use and the like by providing continuous negative pressure through the manual air suction mechanism 3, can reduce the requirements on the technical level of operators, is convenient for carrying the negative pressure device and moving a patient, improves the comfort of the patient, and further reduces the cost by omitting the structures such as a drainage tube, a liquid storage bag or a liquid storage bottle by absorbing wound exudate through the liquid suction layer 2.

In this embodiment, the manual air extraction mechanism 3 includes a fixing portion 31 and an air extraction portion 32 which are mutually communicated, and an air extraction cavity 321 is provided in the air extraction portion 32, wherein:

The fixing part 31 is provided with a sucker which is fixedly connected with the sealing layer 1, and the through hole 111 and the sucker are communicated with an air extraction opening of the air extraction cavity 321;

The air extraction part 32 is provided as an air bag, an air extraction cavity 321 is formed in the air bag, an air extraction opening of the air extraction cavity 321 is communicated with the through hole 111, and an air outlet of the air extraction cavity 321 is communicated with the outside.

In the structure, the sealing layer 1 is connected through the sucking disc, so that the contact area of the sealing layer and the sucking disc is increased, and the connection is firmer. The air bag is adopted for exhausting, so that the air bag is convenient to use and operate, and high in operation convenience.

As an alternative embodiment, the suction cup may be detachably connected or glued to the sealing layer. Illustratively, the sucker is clamped on the sealing layer, so that the purposes of being convenient to replace, saving the space of the device and the like are achieved.

In other embodiments, the suction cup may be attached to the sealing layer 1 by magnetic attraction, specifically, a ring-shaped first magnetic member is disposed on the sealing layer 1 and located at a peripheral position of the through hole 111, and a second magnetic member with an opposite magnetic pole and the same shape as the first magnetic member is disposed on the suction cup, and the second magnetic member is disposed around the suction opening, so that the sealing layer 1 and the air bag can be detachably connected through the first magnetic member and the second magnetic member, and the air bag can be reused.

As an alternative embodiment, the balloon is an extruded balloon or a push-pull balloon, provided that deformation of the evacuation lumen 321 to create a gas change is achieved. In the embodiment shown in fig. 1, the air bag is an extruded air bag, and in the embodiment shown in fig. 2, the air bag is a push-pull air bag. The extrusion type air bag and the push-pull type air bag have different force application modes, but can realize the change of the internal pressure, wherein the volume of the push-pull type air bag can be smaller in a folding way, so that the negative pressure providing effect is better, and the better drainage effect can be achieved.

In other embodiments, the air extracting portion 32 may also have a hard shell structure, that is, the air extracting cavity 321 does not form a gas change in a deformation manner, but at least part of the gas in the air extracting cavity 321 is manually extracted by a tool such as an air extracting cylinder, so that the air extracting cavity 321 can have a continuous negative pressure.

On the basis of the structure, the liquid absorption layer 2 can be connected to the sealing layer 1 in a gluing mode, so that the liquid absorption layer 2 and the sealing layer 1 are integrated, the liquid absorption layer 2 can also not be connected with the sealing layer 1, after the sealing layer 1 is glued on the skin of a wound surface of a patient, the sealing layer 1 covers the liquid absorption layer 2, the periphery of the sealing layer 1 is glued with the skin, and the liquid absorption layer 2 is fixed between the sealing layer 1 and the skin.

As an optional embodiment, the sealing layer 1 is made of PU film, the sealing layer 1 is made of medical adhesive film or transparent film, and the wound surface is sealed by the medical adhesive film or the transparent film, so that air leakage is not easy, and the drainage effect is improved. The PU film material has the characteristics of light weight and softness, can better fit with the skin of a patient, and further improves the comfort level of the patient.

Optionally, the liquid absorbing layer 2 is made of foam dressing material, or sponge dressing material, or other materials with liquid absorbing and air permeability properties.

In this embodiment, the unidirectional structure includes a unidirectional valve one 4, and the unidirectional valve one 4 is disposed in the fixing portion 31. The check valve has a simple structure and ingenious design, on one hand, the manual air suction mechanism 3 can enable air to flow from the liquid suction layer 2 to the manual air suction mechanism 3 when air is sucked, but cannot flow into the liquid suction layer 2 from the manual air suction mechanism 3 reversely, on the other hand, the check valve plays a role of a sealing plug, and continuously blocks external air under the condition that the inside of the sealing layer 1 is negative pressure after air suction is finished, so that the continuous negative pressure state in the sealing layer 1 is ensured.

In this embodiment, the unidirectional structure further includes a second unidirectional valve 5, where the second unidirectional valve 5 is disposed at the exhaust port of the air extraction cavity 321. The check valve II 5 can continuously block external air under the condition that the inside of the air extraction cavity 321 is negative pressure, so that the device is in a continuous negative pressure state, and the service time and the adsorption effect of the device are improved.

Example two

The second embodiment of the present application provides a portable negative pressure device, which is different from the first embodiment in the following points:

Referring to fig. 3, in this embodiment, the sealing layer 1 is fixedly connected to the contact layer 7 by adhesion, the liquid absorbing layer 2 is disposed between the sealing layer 1 and the contact layer 7, and the contact layer 7 is a breathable liquid-permeable medical silicone gel layer.

The device can be adhered to the skin surface by the contact layer 7, so that the device is more convenient and faster to use, and the breathable liquid-permeable medical silicone gel layer can prevent the formation of a hyperplastic scar and is beneficial to the recovery of a wound surface.

Further, a supporting conductive layer 6 is also included, the supporting conductive layer 6 being arranged below the liquid absorbent layer 2. The support conducting layer 6 is arranged to improve the deformation space of the device when the device is used for pumping negative pressure, so that the conductivity of wound tissue fluid is improved, the support conducting layer 6 plays a role in supporting the whole device, the problem that the sealing layer 1, the liquid absorbing layer 2 and the contact layer 7 excessively deform under the action of negative pressure to cause unsmooth liquid absorption is avoided, the liquid absorbing effect of the device is improved, and in addition, the support conducting layer 6 can absorb a certain amount of liquid, and the whole liquid storage capacity of the device is improved.

In this embodiment, the sealing layer 1 and the contact layer 7 are adhesively fixed, and a space for accommodating the support conductive layer 6 and the liquid-absorbent layer 2 is formed therebetween. By the structure, the sealing layer 1 and the liquid absorbing layer 2 or the sealing layer 1, the liquid absorbing layer 2 and the supporting conductive layer 6 of the device are formed into a whole body when a product is formed, so that the operation and the use are convenient.

Optionally, a plurality of through holes are formed in the supporting conductive layer 6 or the supporting conductive layer 6 is in a hollow structure, so that liquid can pass through conveniently, and the liquid absorbing layer 2 can absorb exudates smoothly.

Optionally, the supporting conductive layer 6 is made of foam, plastic, rubber, metal, etc. The support conductive layer 6 is preferably made of foam or plastic material to minimize the weight of the support conductive layer 6. The supporting conductive layer 6 can be manufactured by adopting a 3D printing technology, so that the manufacturing cost is further reduced.

The rest of the structure of this embodiment is the same as that of the first embodiment, and will not be described here again.

Example III

The third embodiment of the present application provides a portable negative pressure device, which is different from the first or second embodiments as follows:

Referring to fig. 4, the liquid-absorbent layer 2 is provided with a transfer hole 21 at a position corresponding to the through hole 111. The device can avoid the phenomenon that the liquid absorbing layer 2 seals the through hole 111 under the action of negative pressure, improves the circulation of gas in the device and the conductivity of wound tissue liquid, and simultaneously can avoid the influence on the liquid absorbing effect caused by excessive deformation of the liquid absorbing layer 2, reduce the resistance of manual negative pressure pumping and improve the operation convenience.

In the embodiment, the contact layer 7, the supporting conductive layer 6, the liquid absorbing layer 2 and the sealing layer 1 are sequentially stacked, wherein the periphery of the sealing layer 1 is in sticky connection with the contact layer 7, the supporting conductive layer 6 and the liquid absorbing layer 2 are arranged between the sealing layer 1 and the contact layer 7, the air sac is connected to the sealing layer 1 through a sucking disc, and after the air sac is extruded, the inside of the device is provided with continuous slight negative pressure, so that the liquid absorbing layer 2 can continuously absorb wound permeate.

The rest of the structure of this embodiment is the same as that of the first embodiment or the second embodiment, and will not be described here again.

Example IV

The fourth embodiment of the present application provides a portable negative pressure device, which is different from the second or third embodiments in the following points:

In this embodiment, the negative pressure device is not provided with a contact layer 7, and the support conductive layer 6, the liquid absorbing layer 2 and the sealing layer 1 are provided in this order. In use, the periphery of the sealing layer 1 is adhered to the skin surrounding the wound, and the sealing layer 1 is covered over the wicking layer 2 and the supporting conductive layer 6.

The rest of the structure of this embodiment is the same as that of the second embodiment or the third embodiment, and will not be described here again.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present utility model.

Claims

1. The portable negative pressure device is characterized by comprising a sealing layer (1), a liquid absorbing layer (2) and a manual air suction mechanism (3);

The manual air suction mechanism is characterized in that a liquid suction layer (2) is arranged below the sealing layer (1), a through hole (111) is formed in the sealing layer (1), one end of the manual air suction mechanism (3) is fixed on the sealing layer (1), an air suction cavity (321) is formed in the manual air suction mechanism (3), the air suction cavity (321) is communicated with the through hole (111), and a one-way structure enabling air to sequentially flow through the liquid suction layer (2) and the air suction cavity (321) to the outside is further arranged in the manual air suction mechanism (3).

2. The portable negative pressure device according to claim 1, characterized in that the manual pumping mechanism (3) comprises a fixing part (31) and a pumping part (32) which are communicated with each other, and the pumping cavity (321) is arranged in the pumping part (32);

The one-way structure comprises a one-way valve I (4), and the one-way valve I (4) is arranged in the fixing part (31).

3. The portable negative pressure device according to claim 2, wherein the air extraction part (32) is an air bag, the air extraction cavity (321) is formed in the air bag, an air extraction opening of the air extraction cavity (321) is communicated with the through hole (111), and an air outlet of the air extraction cavity (321) is communicated with the outside.

4. A portable negative pressure device according to claim 3, wherein the balloon is an extruded balloon or a push-pull balloon.

5. A portable negative pressure device according to claim 3, characterized in that the fixing part (31) is provided as a suction cup which is fixedly connected to the sealing layer (1), and the through hole (111), the suction cup and the suction opening of the suction cavity (321) are communicated.

6. A portable negative pressure device according to claim 3, characterized in that the unidirectional structure further comprises a second unidirectional valve (5), the second unidirectional valve (5) being arranged at the exhaust port of the pumping chamber (321).

7. Portable negative pressure device according to claim 1, characterized in that it further comprises a supporting conducting layer (6), said supporting conducting layer (6) being arranged below said wicking layer (2).

8. Portable negative pressure device according to claim 7, characterized in that the liquid absorbing layer (2) is provided with a transmission hole (21), the transmission hole (21) corresponding to the position of the through hole (111).

9. The portable negative pressure device according to any one of claims 1-8, further comprising a contact layer (7), wherein the sealing layer (1) is fixedly connected with the contact layer (7) in an adhesive manner, the liquid absorbing layer (2) is arranged between the sealing layer (1) and the contact layer (7), and the contact layer (7) is a breathable liquid-permeable medical silicone gel layer.

10. Portable negative pressure device according to claim 5, characterized in that the suction cup is clamped and fixed on the sealing layer (1).