CN201643356U

CN201643356U - Negative pressure drainage device

Info

Publication number: CN201643356U
Application number: CN2010202019052U
Authority: CN
Inventors: 朱新生
Original assignee: 朱新生
Current assignee: GUANGDONG MEIJIE WAYSTECH BIOTECHNOLOGY CO., LTD.
Priority date: 2010-05-18
Filing date: 2010-05-18
Publication date: 2010-11-24
Anticipated expiration: 2020-05-18

Abstract

The utility mode discloses a negative pressure drainage device, which comprises a drainage pipe and a blocky medical foam material, wherein a medical thin film is covered on the outer surface of the foam material and is provided with a hole; a vertical sucker type pipe joint is arranged on the open hole in a sealing way; the drainage pipe comprises an outer pipe and an inner pipe; the inner pipe further comprises a vertical pipe and a horizontal pipe; the upper end of the vertical pipe is connected with the vertical sucker type pipe joint; the lower end of the vertical pipe is inserted and wrapped into the medical foam material; the lower end of the vertical pipe is communicated and connected with at least one horizontal pipe through the joint or an opening the pipe wall at the lower end; the horizontal pipe is wrapped into the medical foam material; a plurality of side holes for drainage are arranged on the pipe wall; the front end of the outer pipe is communicated with the inner pipe through the vertical sucker type pipe joint; and the rear end of the outer pipe is externally connected with a negative pressure source. The negative pressure drainage device can realize large range negative pressure conduction and favorable sealing performance, has ideal drainage effect and convenient sealing operation and is suitable for being popularized and used.

Description

A kind of negative pressure drainage device

Technical field

This utility model relates to medical apparatus and instruments, specifically is a kind of medical negative pressure drainage device.

Background technology

Clinically, sickness rate such as various acute and chronic wound surface, ulcer are higher, are commonly encountered diseases and frequently-occurring disease.Traditional wound surface is changed dressings and method such as drain is faced with problems such as wayward, the time-consuming length of traumatic infection, patient's misery, medical personnel's workload are big, how to improve the treatment level of relevant disease, is one of urgent problem medically.In the European and American areas, the next negative-pressure sealed drainage technology that constantly develops at surgical field of recent two decades (Vacuum SealingDrainage, VSD), also development is swift and violent at home in recent years, substantially, popularize at various big hospital, particularly orthopaedics, Burn and Plastic Surgery Dept. etc. are used more.

Basic operation method at the VSD technology of open wound treatment is: after the various wound surface debridements, with polyvinyl alcohol foamed materialss such as (PVA) as the intermediary between wound surface and the drainage tube, then with medical semipermeable membrane encapsulant sealing wound surface, the drainage tube rear end connects various negative pressure sources, and high negative pressure attracts to treat.

The negative pressure drainage device basic structure of existing employing VSD technology mainly contains two kinds:

A, comprise a long drainage tube and blocky foam material for medical use, have on the drainage tube leading portion tube wall among a plurality of drains inject and be wrapped in foam material for medical use with side opening and from the side level of block foam material for medical use.Use medical semipermeable membrane during use and paste sealing, drainage tube is used " mesentery method " or " puncture method " and is sealed.

The inventor once improved above-mentioned design, had increased syringe pipe, and to realize the wound surface washing capacity, using method and said structure are basic identical.

B, comprise a drainage tube and a blocky foam material for medical use that has sucker structure.During use foam material for medical use is covered or the filling wound surface, medical film is with wound surface and foam material for medical use integral sealing, have a hole on the medical film and be provided with a vertical sucked type pipe joint hermetically on the hole, drainage tube is fixed on the vertical sucked type pipe joint then.

But above-mentioned two kinds are adopted the negative pressure drainage device of VSD technology to have following shortcoming: second kind of scheme drainage tube relies on sucker structure to be connected with foamed materials, sucker is placed on the outer surface of foamed materials, belong to the point-like contact, because be subjected to the restriction of negative pressure conduction, the actual range of drainage tube attraction and drain is little, the negative pressure conduction is limited on a large scale, is not suitable for the treatment than the large tracts of land wound surface, directly influences therapeutic effect; First kind of scheme drainage tube used " mesentery method " or " puncture method " and sealed, and " puncture method " is because need puncture, seldom use at present on human body." mesentery method " is present most popular method, but because human body is perspired and wound exudate reasons such as physical activity tractive, " mesentery " located semipermeable membrane and can be become flexible, and the slit occurs, produces gas leak phenomenon, cause negative pressure to reduce, even disappear, directly influence treatment reliability; Also have, when using the treatment of VSD technology, employed semipermeable membrane reality all is two-way ventilated membrane, and foam material for medical use is taken out under the environment of negative-pressure vacuum, and air can see through inwardly slowly air inlet of semipermeable membrane, can cause negative pressure to weaken equally even disappear, continue suction so be extensive use of HC negative pressure or electric suction apparatus at present, could guarantee therapeutic effect, but like this, patient activity inconvenience has also greatly limited the scope of application of negative-pressure sealed drainage technology; In addition, the pad pasting sealing of second kind of scheme is inconvenient, because human body wound surface form and position have nothing in common with each other, in order to reach ideal sealing effectiveness, in actual the use medical personnel's Filming Technology is had relatively high expectations, even need to be equipped with professional pad pasting personnel, the standardization that this is unfavorable for this technology has limited promoting the use of of VSD technology.

The utility model content

The purpose of this utility model just provides and a kind ofly can realize large-scale negative conduction, good seal performance, has convenient, the suitable negative pressure drainage device of promoting the use of of desirable drainage effect and seal operation.

The purpose of this utility model can realize by following technical scheme:

A kind of negative pressure drainage device, comprise drainage tube and block foam material for medical use, be coated with medical film on the described foamed materials outer surface, have a hole on the described medical film and in described perforate, be provided with a vertical sucked type pipe joint hermetically, it is characterized in that: described drainage tube is divided into outer tube and interior pipe, pipe is divided into VERTICAL TUBE and horizontal tube again in described, described VERTICAL TUBE upper end is connected with described vertical sucked type pipe joint, the lower end is injected and is wrapped among the described foam material for medical use, the VERTICAL TUBE lower end is connected with at least one horizontal tube by the opening of joint or lower end tube wall, described horizontal tube is wrapped among the foam material for medical use and has a plurality of drain side openings on the tube wall, and described outer tube front end is communicated with described interior pipe by described vertical sucked type pipe joint, the external negative pressure source in rear end.

The drain of horizontal tube sidewall is played the effect that imbibition produces negative pressure with side opening during drain, many horizontal tube can enlarge the scope that produces negative pressure and drain simultaneously, what and length of horizontal tube can design as required or prune, the needs of the large-scale negative of satisfying the demand drain; Medical film can play the effect of sealing foamed materials, can form subnormal ambient after air is drawn out of under the film; The sucked type pipe joint can make the leakage between drainage tube and foamed materials and the medical film drop near zero.

On the basis of the above, this utility model can also be done further improvement:

Be provided with the syringe pipe that a upper end has interface, its stage casing pass and sealing and fixing in the hole of sucked type pipe joint sidewall, the lower end passes outside the foam material for medical use lower surface, the interface of upper end has plug, the shutoff interface is avoided polluting and gas leakage when not washing.

The area of described medical film is equal to or greater than foam material for medical use, and the neighboring of described medical semipermeable membrane greater than foam material for medical use has viscosity and is coated with protection sheet.So both can use mucosa separately, after also can directly protection sheet being torn foam material for medical use was fixed on the skin.

Medical film on the described foam material for medical use can also be hermetically sealable film or be coated with medical hermetically sealable film separately, can thoroughly avoid the slowly phenomenon of gas leakage of the conventional semipermeable membrane that uses like this.

During use, this device is covered on open wound or the wound surface, dressing can adopt medical PVA foamed materials or medical polyurethane foamed materials etc., and application stickup semipermeable membrane is pasted this device and is sealed on the normal skin then.Or use the semipermeable membrane that this device sticked on the dressing film surface and paste mutually with the skin of wound surface periphery; Connecting extension tube attached and negative pressure source then, start negative pressure source and just can carry out drain wound exudate or downright bad material, negative pressure source is generally-12～-80kPa.

Can wash wound by syringe pipe when needing.

Before the application, find no same product and emerge or deliver, compared with prior art, this utility model has produced beyond thought beneficial effect:

(1) vertical tube and horizontal tube play the imbibition drainage simultaneously during drain, can enlarge the drain scope, and horizontal tube length can design or prune as required, the needs of the large-scale negative of can satisfying the demand drain;

(2) the seamless connection between sucked type pipe joint and drainage tube and foamed materials and the medical film, avoided this place to produce gas leak phenomenon, avoided reducing to weaken drainage because of negative pressure;

(3) adopt air-locked thin film to substitute semipermeable membrane, medical film can play the effect to the foamed materials sealing, after air is drawn out of under the film, can form subnormal ambient, and avoid the semipermeable membrane on foamed materials surface because the situation that two-way ventilative generation negative pressure reduces takes place;

(4) area of semipermeable membrane is greater than the face that the mounts area of foam material for medical use and medical film, and the neighboring of medical semipermeable membrane has viscosity, the periphery of semipermeable membrane directly can be pasted on the skin of wound periphery after being placed on foam material for medical use on the wound during use, easy to use, simple to operate, lower to the requirement of Filming Technology level, do not need to be equipped with special pad pasting personnel, suitable promoting the use of.

Description of drawings

Fig. 1 is this utility model embodiment one profile;

The vertical view of Fig. 2 this utility model embodiment one;

Fig. 3 is the vertical view after specific embodiment two takes down foamed materials;

Fig. 4 is the vertical view after specific embodiment three takes down foamed materials;

Fig. 5 is the local enlarged diagram of embodiment four;

Fig. 6 is the profile of embodiment five;

Fig. 7 is that the vertical tube of embodiment six is connected the section enlarged diagram with horizontal tube.

The specific embodiment

A kind of negative pressure drainage device shown in Fig. 1～2 is embodiment one of the present utility model, it has comprised drainage tube, square or rectangle foam material for medical use 2 and has covered medical film 3 on the foamed materials outer surface, has had a hole on the medical film and be provided with a vertical sucked type pipe joint 4 hermetically in described perforate.

Drainage tube can be divided into outer tube 16 and interior pipe 1, interior pipe 1 is divided into the vertical tube 11 of vertical placement and the horizontal tube 12 of horizontal positioned again, vertical tube 11 is perpendicular to blocky foam material for medical use, the upper end is connected with described vertical sucked type pipe joint 4, the lower end is injected and is wrapped among the described foam material for medical use 2, and the lower end by joint (certainly, also can be by the opening of front end tube wall, referring to Fig. 7) be connected with horizontal tube 12, be wrapped in and have a plurality of drains on horizontal tube 12 tube walls among the foam material for medical use with side openings 5, these drain side openings 5 can further enlarge attraction and drain scope, to reach ideal drainage effect, the front end of outer tube is communicated with interior pipe by vertical sucked type pipe joint, back termination negative pressure source.

The area of medical film 3 is equal to or greater than foam material for medical use, has viscosity and is coated with protection sheet 13 greater than the neighboring of the medical semipermeable membrane of foam material for medical use, and medical film 3 fits tightly with the one side that foam material for medical use 2 contacts.Can directly stick on the skin of wound periphery pasting film after during use protection sheet being torn off.

Certainly, drainage tube can be made with vertical sucked type pipe joint one, or the interior pipe of drainage tube is made with vertical sucked type pipe joint one.

Negative pressure drainage device shown in Figure 3 is embodiment two of the present utility model, and it is with the different of embodiment one: the front end of the vertical tube 12 of described drainage tube 1 is connected with three horizontal tubes 12 that stretch out to the same side.

A kind of negative pressure drainage device shown in Figure 4 is embodiment three of the present utility model, and it is with the different of embodiment one and two: the front end of the vertical tube 12 of described drainage tube 1 is connected with four horizontal tubes 12 that stretch out to different directions.

Fig. 5 is the local enlarged diagram of embodiment four, is coated with medical impermeable membrane 14 on the medical film.

Embodiment five shown in Figure 6, be with embodiment one difference: be provided with the syringe pipe 14 that a upper end has interface 15, its stage casing pass and sealing and fixing in the hole of sucked type pipe joint sidewall, the lower end passes outside the foam material for medical use lower surface, the interface of upper end has plug, and the shutoff interface is avoided polluting and gas leakage when not washing.

This negative pressure drainage device pipe is applicable to various types of wound surface:

1, acute and chronic skin tissue defects wound surface

2, infective wound surface, abscess

3, skin grafted wounds

4, various intractable wound surface are as diabetic ulcer, pressure ulcer (pressure ulcer), venous stasis ulcer etc.

5, various fistula fistula road etc.

Claims

1. negative pressure drainage device, comprise drainage tube and block foam material for medical use, be coated with medical film on the described foamed materials outer surface, have a hole on the described medical film and in described perforate, be provided with a vertical sucked type pipe joint hermetically, it is characterized in that: described drainage tube is divided into outer tube and interior pipe, pipe is divided into VERTICAL TUBE and horizontal tube again in described, described VERTICAL TUBE upper end is connected with described vertical sucked type pipe joint, the lower end is injected and is wrapped among the described foam material for medical use, the VERTICAL TUBE lower end is connected with at least one horizontal tube by the opening of joint or lower end tube wall, described horizontal tube is wrapped among the foam material for medical use and has a plurality of drain side openings on the tube wall, and described outer tube front end is communicated with described interior pipe by described vertical sucked type pipe joint, the external negative pressure source in rear end.

2. negative pressure drainage device according to claim 1 is characterized in that: be provided with the syringe pipe that a upper end has interface, its stage casing pass and sealing and fixing in the hole of sucked type pipe joint sidewall, the lower end passes outside the described foam material for medical use lower surface.

3. negative pressure drainage device according to claim 1 and 2 is characterized in that: described medical film is semipermeable membrane or hermetically sealable film.

4. negative pressure drainage device according to claim 3 is characterized in that: the area of described medical film is equal to or greater than foam material for medical use, and the neighboring of described medical semipermeable membrane greater than foam material for medical use has viscosity and is coated with the viscosity protection sheet.

5. negative pressure drainage device according to claim 4 is characterized in that: be coated with medical stickup semipermeable membrane on the described medical film.