CN210330903U - Drainage device is sealed to compound hydrophilic layer negative pressure - Google Patents
Drainage device is sealed to compound hydrophilic layer negative pressure Download PDFInfo
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- CN210330903U CN210330903U CN201920401019.5U CN201920401019U CN210330903U CN 210330903 U CN210330903 U CN 210330903U CN 201920401019 U CN201920401019 U CN 201920401019U CN 210330903 U CN210330903 U CN 210330903U
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- hydrophilic layer
- drainage
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- polyvinyl formal
- negative pressure
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Abstract
The utility model discloses a drainage device is sealed to compound hydrophilic layer negative pressure, including transparent applying ointment or plaster, the top surface on hydrophilic layer is connected to the bottom surface on transparent applying ointment or plaster, and polyvinyl formal sponge layer is connected to the bottom surface on hydrophilic layer, and polyvinyl formal sponge layer passes through the drainage subassembly drainage. The utility model discloses can avoid current polyvinyl formal sponge drainage medium's problem well when keeping polyvinyl formal sponge drainage medium advantage.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to a drainage device is sealed to compound hydrophilic layer negative pressure.
Background
The negative pressure closed drainage device is widely applied to clinical wound treatment since the invention of doctor Fleischman in Germany in 1992, and a good effect is achieved. The device can directly discharge oozing blood, oozing liquid, liquefied necrotic tissue fragments, pus and the like in the wound surface of a human body out of the body, quickly clean the wound surface, avoid toxin reabsorption and promote wound surface healing, and a patient does not need to change medicines within 3-7 days, thereby avoiding cross infection, reducing the workload of medical personnel, reducing the pain of the patient and reducing the fatality rate and the disability rate of the wound.
The basic configuration of the existing negative pressure closed drainage technology comprises a drainage tube, a transparent application and a porous drainage medium, wherein the porous drainage medium generally adopts polyvinyl formal (PVF) sponge or Polyurethane (PU) sponge.
The polyurethane sponge has large pores, good permeability and good drainage effect, and still keeps the soft characteristic in a dry state, but the sponge has the problem that granulation tissues grow into the pores of the sponge, so that the wound surface is very easy to draw and bleed when being removed, pain is brought to patients, scraps are easy to fall off, and the safety problems of wound surface foreign body inflammatory reaction and secondary infection are further brought.
The polyvinyl formal sponge well avoids the problems of the polyurethane sponge, but the polyvinyl formal sponge has hard touch in a dry state, easily influences the drainage effect, possibly presses tissues of a contact part, and brings extra risks to a patient. This is particularly true when a sponge with a high porosity and a large pore size is used in order to achieve a better drainage effect, or later in the treatment, or in the case of a wound surface which itself is less exuding. In order to avoid the influence of the problem, the current negative pressure closed drainage device adopting polyvinyl formal sponge as the drainage medium does not sacrifice partial drainage characteristics, adopts the sponge with lower porosity and smaller pore diameter, does not shorten the service cycle of the product, and is replaced when the sponge is not dried yet, but the sponge brings another problem, namely the workload of medical care personnel and the medical expense burden of patients are increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a drainage device is sealed to negative pressure on compound hydrophilic layer when keeping polyvinyl formal sponge drainage medium advantage, can avoid the problem of current polyvinyl formal sponge drainage medium well.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a drainage device is sealed to compound hydrophilic layer negative pressure, including transparent applying ointment or plaster, the top surface on hydrophilic layer is connected to the bottom surface on transparent applying ointment or plaster, polyvinyl formal sponge layer is connected to the bottom surface on hydrophilic layer, polyvinyl formal sponge layer passes through the drainage subassembly drainage.
Preferably, the drainage assembly comprises a drainage tube, one end of the drainage tube is positioned in the polyvinyl formal sponge layer, and the other end of the drainage tube penetrates through the side wall of the polyvinyl formal sponge layer.
Further, the number of the drainage tubes is at least two.
As another preferred, the drainage assembly comprises a drainage tube and a sucker, one end of the drainage tube is connected with the sucker, the hydrophilic layer is provided with a through hole which is communicated up and down, and the through hole is matched with the sucker.
Preferably, the transparent application sheet completely covers the hydrophilic layer, the hydrophilic layer completely covers the polyvinyl formal sponge layer, and the surface area of the transparent application sheet is larger than that of the hydrophilic layer.
Preferably, the hydrophilic layer is adhered to the transparent application, and the polyvinyl formal sponge layer is adhered to the hydrophilic layer.
Preferably, the hydrophilic layer is made of carboxymethyl cellulose, chitosan, hyaluronic acid, alginate, xanthan gum or polyethylene glycol.
Preferably, the hydrophilic layer has a dry water absorption capacity of more than 10 times.
Preferably, the hydrophilic layer is a sheet-like or porous network structure.
Preferably, the hydrophilic layer is 1-5mm thick after water saturation, the polyvinyl formal sponge layer is 5-20 mm thick, and the average pore diameter is 0.5-2 mm.
The utility model discloses a use method as follows: the transparent plaster is pasted on the position of the wound surface of a human body, so that the polyvinyl formal sponge layer is pasted on the wound surface, and during drainage, the free end of the drainage tube is connected with a negative pressure source for drainage.
The utility model has the advantages as follows: the polyvinyl formal sponge drainage medium can well avoid the problem of the existing polyvinyl formal sponge drainage medium while keeping the advantages of the polyvinyl formal sponge drainage medium.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a sectional view of embodiment 1;
fig. 3 is a schematic structural view of embodiment 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and fig. 2, the embodiment comprises a transparent application 3, the bottom surface of the transparent application 3 is connected with the top surface of a hydrophilic layer 2, the bottom surface of the hydrophilic layer 2 is connected with a polyvinyl formal sponge layer 1, and the polyvinyl formal sponge layer 1 is drained through a drainage component; the drainage component comprises a drainage tube 4, one end of the drainage tube 4 is positioned in the polyvinyl formal sponge layer 1, and the other end of the drainage tube 4 penetrates through the side wall of the polyvinyl formal sponge layer 1; in order to enhance the drainage effect, the drainage tube 4 can be provided in plurality.
The transparent application 3 completely covers the hydrophilic layer 2, the hydrophilic layer 2 completely covers the polyvinyl formal sponge layer 1, and the surface area of the transparent application 3 is larger than that of the hydrophilic layer 2; the hydrophilic layer 2 is adhered with the transparent application 3, and the polyvinyl formal sponge layer 1 is adhered with the hydrophilic layer 2; the dry water absorption rate of the hydrophilic layer 2 is more than 10 times; the hydrophilic layer 2 can be in a complete sheet shape or a porous net structure; the thickness of the hydrophilic layer 2 after water absorption saturation is 1-5mm, the thickness of the polyvinyl formal sponge layer 1 is 5-20 mm, and the average pore diameter is 0.5-2 mm.
The hydrophilic layer 2 is made of carboxymethyl cellulose, chitosan, hyaluronic acid, alginate, xanthan gum or polyethylene glycol; the hydrophilic layer 2 may be a composite of two or more of the above materials.
Example 2
As shown in fig. 3, the present embodiment is an external drainage tube, and the difference between the present embodiment and embodiment 1 is that the drainage assembly of the present embodiment is different, the drainage assembly of the present embodiment includes a drainage tube 4 and a suction cup 41, one end of the drainage tube 4 is connected to the suction cup 41, the hydrophilic layer 2 is provided with a through hole running through up and down, and the through hole is adapted to the suction cup 41; when in use, the suction cup 41 is inserted into the through hole to ensure that the suction cup 41 is in direct contact with the polyvinyl formal sponge layer 1.
Other parts of this embodiment are the same as embodiment 1, and thus are not described in detail.
Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.
Claims (4)
1. The utility model provides a drainage device is sealed to hydrophilic layer negative pressure which characterized in that: the adhesive tape comprises a transparent application, wherein the bottom surface of the transparent application is connected with the top surface of a hydrophilic layer, the bottom surface of the hydrophilic layer is connected with a polyvinyl formal sponge layer, and the polyvinyl formal sponge layer is drained through a drainage component;
the drainage assembly comprises a drainage tube and a sucker, one end of the drainage tube is connected with the sucker, the hydrophilic layer is provided with a through hole which is communicated up and down, and the through hole is matched with the sucker;
the dry water absorption rate of the hydrophilic layer is more than 10 times;
the hydrophilic layer is of a sheet-shaped or porous reticular structure;
the thickness of the hydrophilic layer after water saturation is 1-5mm, the thickness of the polyvinyl formal sponge layer is 5-20 mm, and the average pore diameter is 0.5-2 mm.
2. The composite hydrophilic layer negative pressure closed drainage device according to claim 1, wherein: the transparent application is completely covered with the hydrophilic layer, the hydrophilic layer is completely covered with the polyvinyl formal sponge layer, and the surface area of the transparent application is larger than that of the hydrophilic layer.
3. The composite hydrophilic layer negative pressure closed drainage device according to claim 2, wherein: the hydrophilic layer is adhered to the transparent application, and the polyvinyl formal sponge layer is adhered to the hydrophilic layer.
4. The composite hydrophilic layer negative pressure closed drainage device according to claim 1, wherein: the hydrophilic layer is made of carboxymethyl cellulose, chitosan, hyaluronic acid, alginate, xanthan gum or polyethylene glycol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401019.5U CN210330903U (en) | 2019-03-27 | 2019-03-27 | Drainage device is sealed to compound hydrophilic layer negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401019.5U CN210330903U (en) | 2019-03-27 | 2019-03-27 | Drainage device is sealed to compound hydrophilic layer negative pressure |
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| Publication Number | Publication Date |
|---|---|
| CN210330903U true CN210330903U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920401019.5U Active CN210330903U (en) | 2019-03-27 | 2019-03-27 | Drainage device is sealed to compound hydrophilic layer negative pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025556A (en) * | 2022-04-20 | 2022-09-09 | 天台文浩新材料科技有限公司 | Filter core and artery hemostix thereof |
-
2019
- 2019-03-27 CN CN201920401019.5U patent/CN210330903U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025556A (en) * | 2022-04-20 | 2022-09-09 | 天台文浩新材料科技有限公司 | Filter core and artery hemostix thereof |
| CN115025556B (en) * | 2022-04-20 | 2024-01-30 | 天台文浩新材料科技有限公司 | Filter element and arterial hemostix thereof |
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