WO2017215418A1 - 用于深腔创面手术护理中的负压封闭引流系统 - Google Patents

用于深腔创面手术护理中的负压封闭引流系统 Download PDF

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Publication number
WO2017215418A1
WO2017215418A1 PCT/CN2017/085628 CN2017085628W WO2017215418A1 WO 2017215418 A1 WO2017215418 A1 WO 2017215418A1 CN 2017085628 W CN2017085628 W CN 2017085628W WO 2017215418 A1 WO2017215418 A1 WO 2017215418A1
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WIPO (PCT)
Prior art keywords
drainage
section
deep cavity
tube
sealing cover
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PCT/CN2017/085628
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English (en)
French (fr)
Inventor
朱玉明
刘昕婷
官红霞
宋九宏
Original Assignee
武汉维斯第医用科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 武汉维斯第医用科技股份有限公司 filed Critical 武汉维斯第医用科技股份有限公司
Priority to US16/310,077 priority Critical patent/US20200171221A1/en
Publication of WO2017215418A1 publication Critical patent/WO2017215418A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/05—Bandages or dressings; Absorbent pads specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/84—Drainage tubes; Aspiration tips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/91—Suction aspects of the dressing
    • A61M1/916—Suction aspects of the dressing specially adapted for deep wounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3344—Measuring or controlling pressure at the body treatment site
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/06—Head
    • A61M2210/0681—Sinus (maxillaris)
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/10—Trunk
    • A61M2210/1021—Abdominal cavity

Definitions

  • the invention relates to the technical field of medical instruments, in particular to a vacuum sealing drainage system for deep cavity wound surgery nursing.
  • the section of the effusion distribution area is relatively small. It is difficult to penetrate the root of the wound with ordinary foam.
  • the effect of bonding with the wound surface is general. As the deep cavity of the patient recovers gradually, the wound area is continuously reduced. The personnel need to replace the foam material corresponding to the wound area several times, and re-filming to close the deep cavity wound, the operation frequency is high, the replacement of the foam cushion is frequent, and the probability of secondary infection of the patient's wound is increased.
  • the object of the present invention is to overcome the deficiencies of the above background art and to provide a negative pressure closed drainage system for use in deep cavity wound surgery care.
  • the foam In the process of drainage, relying on the telescopic effect of the corrugated retractable sealing cover, the foam can be pulled out from the deep cavity wounds to ensure the airtightness of the system and avoid secondary sticking.
  • Membrane reducing the difficulty of medical work, easy to operate, can avoid the replacement of foam materials, without multiple filming, to promote rapid healing of deep cavity wounds. Effective negative pressure closed drainage is provided for patients with deep wounds and relatively small sections of effusion distribution.
  • Embodiments of the present invention provide a negative pressure closed drainage system for use in deep cavity wound surgical care, comprising a porous foam, a medical film, a drainage tube, a liquid storage container, and a negative pressure source, wherein the porous
  • the foam is a columnar porous foam drainage block, one end of the drainage tube is inserted into an upper end of the columnar porous foam drainage block, and the columnar porous foam drainage block is covered with a corrugated retractable sealing cover, the corrugated retractable sealing cover
  • the upper end is provided with a tubular interface sealingly connected with the drainage tube, and the lower end of the corrugated retractable sealing cover has an outer edge flash, and the medical film covers the outer edge flash.
  • the columnar porous foam drainage block has a cross-sectional area of 0.8 cm 2 to 3 cm 2 .
  • the columnar porous foam drainage block has a length of 10 cm to 28 cm.
  • the columnar porous foam drainage block has a foam hole, and the foam hole has a diameter of 1 to 2 mm.
  • the columnar porous foam drainage block is made of a hydrophilic foam.
  • the corrugated retractable sealing cover has a length in the natural state that is 20 mm to 50 mm smaller than the length of the columnar porous foam drainage block.
  • the radial width of the outer edge of the lower end of the corrugated retractable sealing cover is 10mm ⁇ 20mm.
  • the corrugated retractable sealing cover is a corrugated retractable film sealing cover.
  • the corrugated retractable film sealing cover has a wall thickness of 0.8 to 1 mm.
  • the gap between the inner cavity of the corrugated type retractable rubber film sealing cover and the columnar porous foam drainage block is 2 mm to 8 mm.
  • the tubular interface of the upper end of the corrugated retractable film sealing cover has a wall thickness of 2 mm to 4 mm.
  • the corrugated retractable sealing cover is a plastic retractable bellows sealing cover.
  • the plastic retractable bellows sealing cover has a wall thickness of 0.3 mm to 0.6 mm.
  • the minimum gap between the inner cavity of the plastic retractable bellows seal in the natural state and the columnar porous foam drainage block is 2 mm to 8 mm.
  • the tubular interface of the upper end of the plastic retractable bellows sealing cover has a wall thickness of 1 mm to 3 mm.
  • the drainage tube includes a connecting pipe section and a drainage section connected to each other, and the connecting pipe section is connected to the liquid storage container, and an end of the drainage section away from the connecting pipe section and the columnar porous foam drainage block
  • the connecting pipe section is a hollow inner cavity, and the drainage section has an inner cavity, and the drainage section is provided with a notch communicating with the inner cavity.
  • the drainage tube has an outer diameter of 6 mm and an inner diameter of 4 mm.
  • the notch is a groove disposed in a wall of the drainage section.
  • the number of the slots is four, and the drainage section is divided into four parts by the slots.
  • the inner cavity of the drainage section is provided with a cross support rib for supporting a wall of the drainage section, and the four ends of the cross support rib are respectively connected to the four parts of the groove.
  • the drainage tube is a reduced diameter tube, and the reduced diameter section of the reduced diameter tube has a diameter of 12 mm to 24 mm.
  • the connecting pipe segment has an outer diameter of 6 mm and an inner diameter of 4 mm.
  • the notch is a side hole disposed in a wall of the drainage section.
  • the inner cavity of the drainage section is provided with a zigzag support rib for supporting a wall of the drainage section, the zigzag support rib is located at an upper wall of the inner cavity, and the zigzag shape The tip of the support rib faces the tube axis of the reducer.
  • an irrigation tube is inserted into the hollow inner cavity in the connecting pipe section, and the flushing pipe is taken out when approaching the drainage section, and the drawn flushing pipe is parallel to the drainage section.
  • the whole system uses negative pressure drainage instead of traditional replacement therapy, which can reduce the patient's pain and improve the satisfaction of the family. Compared with the drainage of the drainage tube, it can promote the large-scale growth of the wound granulation tissue and shorten the patient. Hospital stay.
  • the invention effectively solves the sealing problem of the columnar porous foam block, and relies on the drainage process
  • the retractable function of the corrugated retractable sealing cover can separate the foam from the deep cavity wound surface, ensuring the airtightness of the system, avoiding secondary filming, reducing the difficulty of medical work, and convenient and simple operation.
  • the porous foam adopts a circular arc design, which is more ergonomically designed than the traditional cubic drainage foam.
  • the foam material When the foam material is finally pulled out, it will not form an unhealed wound circumference with a corner on the body surface, but a wound circumference corresponding to the circular foam cross section, and the wound can be closed in time after being sutured.
  • the side slotted drainage tube has a large contact area with the porous foam, the negative pressure conduction is faster, the drainage effect is better, the variable diameter drainage tube has a larger section of the drainage section, and the sinus is more for the tissue fluid of the wound cavity or after the abdominal operation. And patients after abdominal drainage and other operations.
  • the whole system provides an effective antibacterial environment, avoids secondary infection of wounds, reduces body toxin absorption, reduces wound infection and bleeding, and accelerates wound healing.
  • FIG. 1 is a schematic view of a negative pressure closed drainage system for deep cavity wound surgery care according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a columnar porous foam drainage block
  • Figure 3 is a schematic view showing the structure of a drainage tube having a groove
  • Figure 4 is a cross-sectional view of a drainage section including a slotted draft tube
  • Figure 5 is a schematic view showing the structure of a drainage tube containing a side hole
  • Figure 6 is a schematic structural view of a variable diameter drainage tube
  • Figure 7 is a cross-sectional view of the drainage section of the variable diameter drainage tube
  • Figure 8 is a schematic structural view of a corrugated type retractable rubber film sealing cover
  • Figure 9 is a schematic structural view of a plastic retractable bellows sealing cover
  • Figure 10 is a schematic view showing the use state of the negative pressure closed drainage system in deep cavity wound surgery nursing
  • Fig. 11 is a partially enlarged schematic view showing the section of the negative pressure closed drainage area shown in Fig. 10.
  • the negative pressure closed drainage system for deep cavity wound surgery care of the present invention comprises a porous foam, a medical film 3, a drainage tube 4, a liquid storage container 7, a negative pressure source 8, and a porous
  • the foam is a columnar porous foam drainage block 1, and one end of the drainage tube 4 is inserted into the upper end of the columnar porous foam drainage block 1, and the columnar porous foam drainage block 1 is covered with a corrugated type retractable sealing cover 2, and the upper end of the corrugated type retractable sealing cover 2 has The tubular interface 2a is sealingly connected to the drainage tube 4.
  • the lower end of the corrugated retractable sealing cover 2 has an outer edge flash 2b, and the medical film 3 is covered on the outer edge flash 2b.
  • the drain pipe 4 communicates with the first connecting pipe 6a through the through joint 5, and is connected to the liquid storage container 7, and the second connecting pipe 6b connects the liquid storage container 7 with the negative pressure Source 8 is connected.
  • FIG. 2 is a schematic view showing the structure of a columnar porous foam drainage block.
  • the columnar porous foam drainage block 1 has a cross-sectional area of 0.8 to 3 cm 2 , a length of 10 to 28 cm, a foam pore diameter of 1 to 2 mm, and a material of the columnar porous foam drainage block 1 is a hydrophilic foam.
  • 3 and 4 are schematic views showing the structure of the drainage tube 4 including the groove.
  • the drainage tube 4 has an outer diameter of 6 mm and an inner diameter of 4 mm, and includes a connecting pipe section 4b and a drainage section 4a.
  • the drainage section 4a has four slots 4c respectively communicating with the inner cavity, and the connecting pipe section 4b is a hollow inner cavity at the connecting pipe section. 4b, an irrigation tube 9 is inserted into the hollow lumen, and when approaching the drainage section 4a, the irrigation tube 9 is led out in parallel with the drainage section 4a.
  • the drainage section 4a of the drainage tube 4 with a groove is a four-cavity drainage tube, and the inner cavity of the drainage section 4a contains a cross support rib 4f to form a multi-cavity to prevent the drainage tube 4 from being under suction during suction. Being sucked.
  • Fig. 5 is a schematic view showing the structure of a drainage tube 4 including a side hole.
  • the drainage tube 4 with the side hole has an outer diameter of 6 mm and an inner diameter of 4 mm
  • the side wall 4d of the drainage section 4a has a side hole 4d communicating with the inner cavity
  • the connecting pipe section 4b is a hollow inner cavity
  • there is a flushing pipe. 9 is inserted into the hollow inner cavity, and when approaching the drainage section 4a, the flushing pipe 9 is taken out in parallel with the drainage section 4a.
  • Fig. 6 is a schematic view showing the structure of the variable diameter draft tube 4.
  • the diameter of the drainage section 4 of the variable diameter pipe 4 is 12 mm to 24 mm, and the wall of the drainage section 4a is The side hole 4d is in communication with the inner cavity, the connecting pipe section 4b is a hollow inner cavity, the outer diameter is 6 mm, and the inner diameter is 4 mm.
  • an irrigation pipe 9 is inserted into the hollow inner cavity, and when approaching the drainage section 4a, the flushing pipe 9 is flushed. It is taken out in parallel with the drainage section 4a.
  • Fig. 7 is a schematic sectional view showing the structure of the variable diameter draft tube 4.
  • the inner wall of the drainage section 4a of the variable diameter drainage tube 4 contains a zigzag support rib 4e to prevent the drainage tube 4 from being sucked during the vacuum suction process.
  • Figure 8 is a schematic view showing the structure of a corrugated type retractable film sealing cover.
  • the corrugated type retractable sealing cover 2 is a corrugated type retractable film sealing cover
  • the corrugated type retractable film sealing cover has a wall thickness of 0.8 to 1 mm
  • the corrugated type retractable film sealing cover has a length H in a natural state than a columnar shape.
  • the length of the porous foam drainage block 1 is 20-50 mm, and the gap between the inner cavity and the columnar porous foam drainage block 1 in the corrugated type retractable rubber film sealing cover is 2 mm ⁇ S ⁇ 8 mm, and the corrugated retractable rubber film sealing cover
  • the upper end tubular interface 2a has a wall thickness of 2 to 4 mm, the diameter D is matched with the draft tube 4, and the outer edge of the lower edge of the corrugated retractable film seal cover has a radial width R of 10 to 20 mm.
  • Figure 9 is a schematic view showing the structure of a plastic retractable bellows sealing cover.
  • the thickness of the plastic retractable bellows sealing cover is 0.3-0.6 mm, and the length of the plastic retractable bellows sealing cover in the natural state is larger than that of the columnar porous foam drainage.
  • the length of the block 1 is 20-50 mm, and the minimum gap of the inner cavity and the columnar porous foam drainage block 1 in the natural state of the plastic retractable bellows sealing cover is 2 mm to 8 mm, and the upper end tubular interface 2a of the plastic retractable bellows sealing cover is
  • the wall thickness is 1 to 3 mm, and the outer edge of the lower end of the plastic retractable bellows sealing cover has a radial width of 10 to 20 mm.
  • Fig. 10 is a schematic view showing the state of use of the negative pressure drainage system in the deep cavity wound surgery
  • Fig. 11 is an enlarged view of the closed drainage area of the negative pressure closed drainage system in the deep cavity wound care operation.
  • the columnar porous foam drainage block 1 is placed in the deep cavity wound surface to be drained, and then the corrugated retractable sealing cover 2 is connected through the drainage tube 4, and is closely adhered to the skin around the deep cavity wound by the medical film 3.
  • the size and depth of the deep cavity wound surface are detected, and the suitable columnar porous foam drainage block is selected according to its size and depth for pruning.
  • the requirement is that the length of the columnar porous foam drainage block should be 3-5 cm longer than the deep cavity wound surface.
  • the columnar porous foam drainage block covered with the threaded retractable sealing cover is placed together with the drainage tube into the deep cavity wound surface, and the threaded retractable sealing cover is adhered to the skin around the wound surface by a medical film to form a closed system, which requires:
  • the porous foam needs to go deep into the deepest part of the deep cavity wound. The purpose is to attract the deepest tissue fluid in the deep cavity by the negative pressure source, thereby achieving the anaerobic environment that destroys the microbial reproduction and preventing the microbes from continuing to multiply.
  • the negative pressure source is opened, and the porous foam is adsorbed in the deep cavity wound by the suction attraction, and the wound cavity is filled. Observe the healing ability of the patient's wound cavity and determine the time and number of times of extraction. Requirement: In order to prevent the occurrence of porous foam slippage during the extraction process, it is necessary to use a surgical forceps to simultaneously clamp the threaded retractable sealing cover and the end of the columnar porous foam drainage block and then pull out the part. Take advantage of the threaded retractable seal The telescopic function of the cover protects the porous foam.
  • the invention utilizes a columnar porous foam drainage block as an intermediary between the negative pressure drainage tube and the deep cavity wound surface, and the negative pressure is transmitted to the columnar porous foam drainage block through the drainage tube, and is evenly distributed on the surface of the columnar porous foam drainage block, due to
  • the columnar porous foam drainage block is highly malleable, and the negative pressure can reach every point in the drainage area of the deep cavity wound to form a full-scale drainage.
  • the tissue fluid is drawn into the drainage tube through the pores of the columnar porous foam drainage block under the action of negative pressure, and is quickly absorbed into the liquid storage solution.
  • the system is isolated from the outside by closing the wound to prevent contamination and cross-infection, and to ensure the persistence of negative pressure. Continuous negative pressure causes the exudate to be immediately aspirated, effectively keeping the wound clean and inhibiting bacterial growth.
  • the illustrated negative pressure closed drainage system for deep cavity wound surgery care includes a cylindrical porous foam drainage block 1, a medical film 3, a drainage tube 4, a liquid storage container 7, and a negative pressure source 8.
  • One end of the draft tube 4 is inserted into the upper end of the columnar porous foam drainage block 1, and the other end is in communication with the first connection tube 6a through the through joint 5.
  • One end of the first connecting pipe 6a away from the through joint 5 is inserted into the liquid storage container 7.
  • One end of the second connecting pipe 6b is also inserted into the liquid storage container 7, and the other end is connected to the negative pressure source 8.
  • the columnar porous foam drainage block 1 is provided with a corrugated retractable sealing cover 2, and the upper end of the corrugated retractable sealing cover 2 is sealingly connected to the drainage tube 4.
  • the lower end of the corrugated retractable sealing cover 2 is connected with the outer edge flash 2b, the lower end of the columnar porous foam drainage block 1 is placed in the deep cavity wound surface to be drained, and the outer edge flash 2b is attached to the skin around the deep cavity wound surface, medical
  • the film is covered on the outer edge of the flash 2b to form a sealed environment.
  • One end of the flushing tube 9 is inserted into the draft tube 4.
  • the columnar porous foam drainage block 1 has a cylindrical shape with dense foam pores on its surface.
  • the draft tube 4 includes a connecting tube section 4b and a draining section 4a.
  • the drainage section 4a has an inner cavity
  • the connecting pipe section 4b is a hollow inner cavity.
  • One end of the flushing tube 9 is inserted into the hollow inner cavity and is taken out near the draining section 4a, and the drawn flushing pipe 9 is parallel to the draining section 4a, and is inserted back into the inner cavity of the draining section 4a near the end of the draining section 4a.
  • the surface of the flushing tube 9 has a through hole.
  • the wall of the drainage section 4a is respectively provided with four slots 4c.
  • the four slots 4c are equally spaced apart, and the four slots 4c are all communicated with the inner cavity of the drainage section 4a, and the four slots 4c will be the drainage section 4a.
  • the inner cavity of the drainage section 4a contains a cross support rib, and the four ends of the cross support rib away from the intersection end are respectively connected by the above four parts.
  • a side hole is formed in the wall of the drainage section 4a of the drainage tube 4, and the side hole is in communication with the inner cavity.
  • the connecting pipe section 4b is a hollow inner cavity.
  • a flushing pipe 9 is inserted into the hollow inner cavity.
  • the flushing pipe is taken out, parallel to the draining section 4a, and inserted near the end of the draining section 4a.
  • the inner cavity of the flow section 4a is returned.
  • the surface of the flushing tube 9 has a through hole.
  • the drainage tube 7 is a reducing tube, and the diameter of the drainage section 4a of the reducing tube is larger than the connecting tube section 4b.
  • the tube wall of the drainage section 4a is provided with a side hole, and the side hole is in communication with the inner cavity.
  • the connecting pipe section 4b is a hollow inner cavity.
  • a flushing pipe 9 is inserted into the hollow inner cavity. When approaching the draining section 4a, the flushing pipe 9 is taken out, parallel to the draining section 4a, and near the end of the draining section 4a. The lumen of the drainage section 4a is inserted back.
  • the surface of the flushing tube 9 has a through hole.
  • the upper wall of the inner diameter of the drainage section 4a of the reducer tube has a zigzag support rib, and the serration of the zigzag support rib faces the tube axis of the reducer.
  • the corrugated retractable film sealing cover has a corrugated section, and one end of the corrugated section is connected
  • the tubular interface is connected to the outer edge of the flash 2b.
  • the tubular interface, the corrugated section and the outer edge flash are integrally formed.
  • the diameter of the corrugated retractable film seal is matched to the draft tube 4.
  • the plastic retractable bellows sealing cover has a corrugated section, one end of which is connected with a tubular interface, and the other end is connected with an outer brim 2b.
  • Each outer edge flash 2b has a first segment and a second segment, the first segment is perpendicular to the second segment, and one end of the corrugated segment away from the tubular interface is connected to a right angle formed by the first segment and the second segment, and A section fits over the inner wall of the corrugated section.
  • a conventional drainage tube can also be used in the present invention, and the above is only a preferred embodiment.
  • the core of the present invention is to use the corrugated retractable sealing cover to separate the foam from the deep cavity wound by the expansion and contraction function of the retractable sealing cover, thereby ensuring the airtightness of the system. Therefore, on the basis of the principle of the present invention, it is within the protection scope of the present invention to seal the negative pressure by the corrugated retractable sealing cover.

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  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
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  • Hematology (AREA)
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  • Otolaryngology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • External Artificial Organs (AREA)

Abstract

一种用于深腔创面手术护理中的负压封闭引流系统，包括：柱状多孔泡沫引流块（1）、波纹型可伸缩密封罩（2）、医用贴膜（3）、引流管（4）、储液容器（7）和负压源（8）。柱状多孔泡沫引流块（1）为亲水性泡沫，其周围被波纹型可伸缩密封罩（2）包覆。引流管（4）的一端插入柱状多孔泡沫引流块（1）的上端。在波纹型可伸缩密封罩（2）最下端外沿飞边（2b）由医用贴膜（3）将其与深腔创面周围皮肤贴合。波纹型可伸缩密封罩（2）的上端设置有管状接口（2a）与引流管（4）密封连接。引流管（4）通过直通接头（5）与连接管（6）相连通，插入储液容器（7），连接管将储液容器（7）与负压源（8）相连。柱状多孔泡沫引流块（1）的横截面积为0.8～3cm2，长度为10～28cm，泡沫孔直径为1～2mm。

Description

用于深腔创面手术护理中的负压封闭引流系统
本申请要求于2016年06月15日提交中国专利局的申请号为201610424612.2、名称“用于深腔创面手术护理中的负压封闭引流系统”的中国专利申请的优先权，其全部内容通过引用结合在申请中。
技术领域
本发明涉及医疗器械技术领域，具体地说是一种用于深腔创面手术护理中的负压封闭引流系统。
背景技术
目前临床上对于浅表创面，一般采用换辅治疗，治疗时间长，疗效欠佳，纱布容易被深处物浸湿，导致污染和再感染，需要频繁更换纱布。
对于深腔创面，积液分布区域截面相对较小的患者，现用普通泡沫很难深入创面根部，与创面贴合效果一般，随着患者深腔创面逐渐恢复，创面面积在不断减小，医护人员需多次更换与创面面积相对应的泡沫材料，并重新贴膜封闭深腔创面，操作频次高，更换泡沫软垫频繁，增加了患者伤口二次感染概率。
发明内容
本发明的目的在于克服上述背景技术的不足，提供一种用于深腔创面手术护理中的负压封闭引流系统。引流过程中，依靠波纹型可伸缩密封罩自身的伸缩作用，可将泡沫分次从深腔创面中拔出，保证了系统的气密性，避免二次贴 膜，减小医护工作难度，操作方便简单，可避免更换泡沫材料，无需多次贴膜，促进深腔创面快速愈合。对创面较深，积液分布区域截面相对较小的患者提供有效的负压封闭引流。
本发明的实施方式是这样实现的：
本发明的实施方式提供了一种用于深腔创面手术护理中的负压封闭引流系统，其包括多孔泡沫、医用贴膜、引流管、储液容器和负压源，其特征在于，所述多孔泡沫为柱状多孔泡沫引流块，所述引流管的一端插入所述柱状多孔泡沫引流块的上端，所述柱状多孔泡沫引流块上套有波纹型可伸缩密封罩，所述波纹型可伸缩密封罩的上端设置有管状接口与所述引流管密封连接，所述波纹型可伸缩密封罩的下端有外沿飞边，所述医用贴膜覆盖在所述外沿飞边上。
可选的，所述柱状多孔泡沫引流块的横截面积为0.8cm2～3cm2。
可选的，所述柱状多孔泡沫引流块的长度为10cm～28cm。
可选的，所述柱状多孔泡沫引流块具有泡沫孔，所述泡沫孔的直径为1～2mm。
可选的，所述柱状多孔泡沫引流块的材质为亲水性泡沫。
可选的，所述波纹型可伸缩密封罩在自然状态下的长度比所述柱状多孔泡沫引流块的长度小20mm～50mm。
可选的，所述波纹型可伸缩密封罩的下端的外沿飞边的径向宽度为 10mm～20mm。
可选的，所述波纹型可伸缩密封罩为波纹型可伸缩胶膜密封罩。
可选的，所述波纹型可伸缩胶膜密封罩的壁厚为0.8～1mm。
可选的，所述波纹型可伸缩胶膜密封罩在自然状态下的内腔与所述柱状多孔泡沫引流块之间的间隙为2mm～8mm。
可选的，所述波纹型可伸缩胶膜密封罩的上端的所述管状接口的壁厚为2mm～4mm。
可选的，所述波纹型可伸缩密封罩为塑料可伸缩波纹管密封罩。
可选的，所述塑料可伸缩波纹管密封罩的壁厚为0.3mm～0.6mm。
可选的，所述塑料可伸缩波纹管密封罩在自然状态下的内腔与所述柱状多孔泡沫引流块之间的最小间隙为2mm～8mm。
可选的，所述塑料可伸缩波纹管密封罩的上端的所述管状接口的壁厚为1mm～3mm。
可选的，所述引流管包括相互连接的连接管段和引流段，所述连接管段与所述储液容器连接，所述引流段的远离所述连接管段的一端与所述柱状多孔泡沫引流块连接，所述连接管段为中空内腔，所述引流段具有内腔，所述引流段设置有与所述内腔连通的缺口。
可选的，所述引流管的外径为6mm，内径为4mm。
可选的，所述缺口为设置于所述引流段的管壁的槽。
可选的，所述槽的数量为4条，所述引流段被所述槽分隔成4部分。
可选的，所述引流段的所述内腔设置有用于支撑所述引流段的管壁的十字交叉支撑筋，所述十字交叉支撑筋的4端分别连接于所述槽的4部分。
可选的，所述引流管为变径管，所述变径管的所述变径段的直径为12mm-24mm。
可选的，所述连接管段的外径为6mm，内径为4mm。
可选的，所述缺口为设置于所述引流段的管壁的侧孔。
可选的，所述引流段的所述内腔设置有用于支撑所述引流段的管壁的锯齿形支撑筋，所述锯齿形支撑筋位于所述内腔的上壁，且所述锯齿形支撑筋的齿尖朝向所述变径管的管轴。
可选的，在所述连接管段有一根冲洗管插入所述中空内腔，在接近所述引流段时，所述冲洗管被引出，引出的所述冲洗管与所述引流段平行。
与现有的技术相比，本实用新型实施例的有益效果是：
1、整个系统用负压引流，替代传统换辅治疗，可以减少患者痛苦，提高家属满意度，与引流管点状引流相比，在引流的同时，能促进创面肉芽组织大面积生长，缩短患者住院时间。
2、本发明有效地解决了柱状多孔泡沫块的密封问题，引流过程中，依靠 波纹型可伸缩密封罩自身的伸缩作用，可将泡沫分次从深腔创面中拔出，保证了系统的气密性，避免二次贴膜，减小医护工作难度，操作方便简单。
3、多孔泡沫采用圆弧形设计，较传统立方体引流泡沫，其尺寸更符合人体工学设计。泡沫材料在最后拔出时，不会在体表形成有边角的未愈合创周，而是与圆弧泡沫截面相对应的创周，经缝合后，可及时关闭创面。
4、侧开槽引流管与多孔泡沫接触面积大，负压传导更快，引流效果更好，变径引流管，其引流段截面更大，对于创腔组织液较多或者腹腔手术后的窦道及腹腔引流等手术后病人使用。
整个系统提供有效抗菌环境，避免伤口形成二次感染，减少机体毒素吸收，降低创面感染、出血，从而加快创面愈合。
附图说明
图1为本发明实施方式提供的用于深腔创面手术护理中的负压封闭引流系统的示意图；
图2为柱状多孔泡沫引流块的结构示意图；
图3为含开槽的引流管的结构示意图；
图4为含开槽引流管的引流段截面图；
图5为含侧孔引流管的结构示意图；
图6为变径引流管的结构示意图；
图7为变径引流管的引流段截面图；
图8为波纹型可伸缩胶膜密封罩的结构示意图；
图9为塑料可伸缩波纹管密封罩的结构示意图；
图10为深腔创面手术护理中的负压封闭引流系统使用状态的示意图；
图11为图10所示的负压封闭引流区域切面的局部放大示意图。
图中：1-柱状多孔泡沫引流块；2-波纹型可伸缩密封罩；2a-管状接口；2b-外沿飞边；3-医用贴膜；4-引流管；4a-引流段；4b-连接管段；4c-槽；4d-侧孔；4e-锯齿形支撑筋；4f-十字交叉支撑筋；5-直通接头；6-连接管；6a-第一连接管；6b-第二连接管；7-储液容器；8-负压源；9-冲洗管。
具体实施方式
下面结合附图详细说明本发明的实施情况，但它们并不构成对发明的限定，仅作举例而已。同时通过说明，本发明的优点将变得更加清楚和容易理解。
如图1、图8、图9：本发明的用于深腔创面手术护理中的负压封闭引流系统包括多孔泡沫、医用贴膜3、引流管4、储液容器7、负压源8，多孔泡沫为柱状多孔泡沫引流块1，引流管4一端插入柱状多孔泡沫引流块1的上端，柱状多孔泡沫引流块1上套有波纹型可伸缩密封罩2，波纹型可伸缩密封罩2的上端有管状接口2a与引流管4密封连接，波纹型可伸缩密封罩2的下端有外沿飞边2b，医用贴膜3覆盖在外沿飞边2b上。引流管4通过直通接头5与第一连接管6a相连通，接入储液容器7，第二连接管6b将储液容器7与负压 源8相连。
图2为柱状多孔泡沫引流块结构示意图。
柱状多孔泡沫引流块1的截面面积为0.8～3cm2，长度为10～28cm，泡沫孔直径为1～2mm，柱状多孔泡沫引流块1的材料为亲水性泡沫。
图3、图4为含开槽的引流管4的结构示意图。
引流管4的外径为6mm，内径为4mm，包括连接管段4b和引流段4a，其引流段4a管壁上有四条槽4c分别与内腔相通，连接管段4b为中空内腔，在连接管段4b,有一根冲洗管9插入中空内腔，在接近引流段4a时，冲洗管9被引出，与引流段4a平行。
如图4：含开槽的引流管4的引流段4a为四腔引流管，在引流段4a的内腔含有十字交叉支撑筋4f，形成多腔，防止引流管4在受负压吸引过程中被吸瘪。
图5为含侧孔的引流管4的结构示意图。
含侧孔的引流管4的外径为6mm，内径为4mm，其引流段4a管壁上有侧孔4d与内腔相通，连接管段4b为中空内腔，在连接管段4b，有一根冲洗管9插入中空内腔，在接近引流段4a时，冲洗管9被引出，与引流段4a平行。
图6为变径的引流管4的结构示意图。
变径的引流管4的引流段4a的直径为12mm-24mm，引流段4a的管壁上有 侧孔4d与内腔相通，连接管段4b为中空内腔，外径为6mm，内径为4mm，在连接管段4b，有一根冲洗管9插入中空内腔，在接近引流段4a时，冲洗管9被引出，与引流段4a平行。
图7为变径的引流管4的截面结构示意图。
变径的引流管4的引流段4a的内腔上壁含有锯齿形支撑筋4e，防止引流管4在受负压吸引过程中被吸瘪。
图8为波纹型可伸缩胶膜密封罩的结构示意图。
波纹型可伸缩密封罩2为波纹型可伸缩胶膜密封罩时，波纹型可伸缩胶膜密封罩的壁厚为0.8～1mm，波纹型可伸缩胶膜密封罩自然状态下的长度H比柱状多孔泡沫引流块1的长度小20～50mm，波纹型可伸缩胶膜密封罩自然状态下的内腔与柱状多孔泡沫引流块1的间隙为2mm<S<8mm，波纹型可伸缩胶膜密封罩的上端管状接口2a的壁厚为2～4mm，直径D与引流管4匹配，波纹型可伸缩胶膜密封罩的下端的外沿飞边2b的径向宽度R为10～20mm。
图9为塑料可伸缩波纹管密封罩的结构示意图。
波纹型可伸缩密封罩2为塑料可伸缩波纹管密封罩时，塑料可伸缩波纹管密封罩的壁厚为0.3～0.6mm，塑料可伸缩波纹管密封罩自然状态下的长度比柱状多孔泡沫引流块1的长度小20～50mm，塑料可伸缩波纹管密封罩自然状态下的内腔与柱状多孔泡沫引流块1的最小间隙为2mm～8mm，塑料可伸缩波纹管密封罩的上端管状接口2a的壁厚为1～3mm，塑料可伸缩波纹管密封罩的下端的外沿飞边2b的径向宽度为10～20mm。
图10为深腔创面手术护理中的负压引流系统使用状态示意图，图11为深腔创面护理手术中的负压封闭引流系统使用中封闭引流区域切面放大图。
使用时，将柱状多孔泡沫引流块1置于深腔创面待引流区，然后通过引流管4连接波纹型可伸缩密封罩2，并通过医用贴膜3将其与深腔创面周围皮肤紧密贴合，形成密封环境。打开负压源，将深腔创面渗液吸引出体外。
工作过程：根据深腔创面在负压引流过程分析，随着肉芽组织生长，创面逐渐愈合，腔道内体积也相应减少，因此，保证泡沫材料在不破坏系统的气密性的情况下，能分次拔出是本发明的主要功能。其操作过程如下：
首先，探测深腔创面大小及深度，根据其大小和深度选择适用的柱状多孔泡沫引流块，进行修剪，使用要求：柱状多孔泡沫引流块的长度应该比深腔创面长3-5cm。
然后，将罩有螺纹型可伸缩密封罩的柱状多孔泡沫引流块连同引流管一起放置进深腔创面内，用医用贴膜将螺纹型可伸缩密封罩与创面周围皮肤贴合，形成密闭系统，要求：多孔泡沫需深入深腔创面最深处，其目的是通过负压源将深腔创面最深处组织液吸引出来，从而达到破坏微生物繁殖的厌氧环境，防止创腔微生物继续繁殖。
最后，打开负压源，通过负压吸引力，将多孔泡沫吸附在深腔创面内，填充创腔。观察患者创腔愈合能力，确定分次拔出时间及次数。要求：为防止拔出过程中出现多孔泡沫滑脱的情况，操作时，需用手术钳同时夹住螺纹型可伸缩密封罩和柱状多孔泡沫引流块一端再拔出部分。充分利用螺纹型可伸缩密封 罩的伸缩功能，对多孔泡沫进行密封保护。
工作原理：本发明利用柱状多孔泡沫引流块作为负压引流管和深腔创面间的中介，负压经过引流管传递到柱状多孔泡沫引流块，且均匀分布在柱状多孔泡沫引流块的表面，由于柱状多孔泡沫引流块的高度可塑性，负压可以到达深腔创面被引流区的每一点，形成一个全方位的引流。引出组织液在负压作用下，经过柱状多孔泡沫引流块的孔隙进入引流管，被迅速吸收进储液溶液。该系统通过封闭创面与外界隔绝，防止污和交叉感染，并保证负压的持续存在。持续负压使创腔渗出物立即被吸走，从而有效保持创面清洁并抑制细菌生长。
实施例：
请参照图1，图示的用于深腔创面手术护理中的负压封闭引流系统包括柱状多孔泡沫引流块1、医用贴膜3、引流管4、储液容器7和负压源8。引流管4的一端插入柱状多孔泡沫引流块1的上端，另一端通过直通接头5与第一连接管6a相连通。第一连接管6a远离直通接头5的一端接入储液容器7内。第二连接管6b的一端也接入储液容器7内，另一端与负压源8连接。
柱状多孔泡沫引流块1套有波纹型可伸缩密封罩2，波纹型可伸缩密封罩2的上端与引流管4密封连接。波纹型可伸缩密封罩2的下端连有外沿飞边2b，柱状多孔泡沫引流块1的下端置于深腔创面待引流区，外沿飞边2b贴合于深腔创面周围的皮肤，医用贴膜覆盖在外沿飞边2b上，形成密封环境。
冲洗管9的一端插入引流管4。
请参照图2，柱状多孔泡沫引流块1为圆柱状，其表面具有密集的泡沫孔。
请参照图3，引流管4包括连接管段4b和引流段4a。引流段4a具有内腔，连接管段4b为中空内腔。冲洗管9的一端插入中空内腔，并在接近引流段4a处被引出，引出后的冲洗管9与引流段4a平行，并在靠近引流段4a末端处插回引流段4a的内腔。冲洗管9表面具有通孔。
请参照图4，引流段4a的管壁分别开设有4条槽4c，4条槽4c等距间隔开设，4条槽4c均与引流段4a的内腔相通，4条槽4c将引流段4a分隔成4部分。引流段4a的内腔含有十字交叉支撑筋，十字交叉支撑筋的远离交叉端的4端分别上述4部分连接。
请参照图5，引流管4的引流段4a的管壁开设有侧孔，侧孔与内腔连通。连接管段4b为中空内腔，在连接管段4b，有一根冲洗管9插入中空内腔，在接近引流段4a时，冲洗管被引出，与引流段4a平行，并在靠近引流段4a末端处插回引流段4a的内腔。冲洗管9表面具有通孔。
请参照图6，引流管7为变径管，变径管的引流段4a直径大于连接管段4b。引流段4a的管壁开设有侧孔，侧孔与内腔连通。连接管段4b为中空内腔，在连接管段4b，有一根冲洗管9插入中空内腔，在接近引流段4a时，冲洗管9被引出，与引流段4a平行，并在靠近引流段4a末端处插回引流段4a的内腔。冲洗管9表面具有通孔。
请参照图7，变径管的引流段4a的内腔上壁含有锯齿形支撑筋，锯齿形支撑筋的锯齿朝向变径管的管轴。
请参照图8，波纹型可伸缩胶膜密封罩具有波纹段，波纹段的一端连接有 管状接口，另一端连接有外沿飞边2b。上述管状接口、波纹段和外沿飞边为一体成型。波纹型可伸缩胶膜密封罩的直径与引流管4匹配。
请参照图9，塑料可伸缩波纹管密封罩具有波纹段，波纹段的一端连接有管状接口，另一端连接有外沿飞边2b。每侧外沿飞边2b均具有第一段和第二段，第一段与第二段垂直，波纹段远离管状接口的一端连接于第一段与第二段所形成的直角处，且第一段贴合于波纹段的内壁。
本发明也可以采用普通引流管，以上仅是最佳实施例。
综上所述：本发明的核心是利用波纹型可伸缩密封罩自身伸缩作用将泡沫分次从深腔创面中拔出，从而保证了系统的气密性。因此，在本发明原理的基础上，通过波纹型可伸缩密封罩密封负压封闭引流的，均属于本发明的保护范围。

Claims (25)

  1. 一种用于深腔创面手术护理中的负压封闭引流系统，包括多孔泡沫、医用贴膜、引流管、储液容器和负压源，其特征在于，所述多孔泡沫为柱状多孔泡沫引流块，所述引流管的一端插入所述柱状多孔泡沫引流块的上端，所述柱状多孔泡沫引流块上套有波纹型可伸缩密封罩，所述波纹型可伸缩密封罩的上端设置有管状接口与所述引流管密封连接，所述波纹型可伸缩密封罩的下端有外沿飞边，所述医用贴膜覆盖在所述外沿飞边上。
  2. 根据权利要求1所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述柱状多孔泡沫引流块的横截面积为0.8cm2～3cm2。
  3. 根据权利要求1或2所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述柱状多孔泡沫引流块的长度为10cm～28cm。
  4. 根据权利要求1-3任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述柱状多孔泡沫引流块具有泡沫孔，所述泡沫孔的直径为1～2mm。
  5. 根据权利要求1-4任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述柱状多孔泡沫引流块的材质为亲水性泡沫。
  6. 根据权利要求1-5任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述波纹型可伸缩密封罩在自然状态下的长度比所述柱状多孔泡沫引流块的长度小20mm～50mm。
  7. 根据权利要求1-6任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述波纹型可伸缩密封罩的下端的外沿飞边的径向宽度为10mm～20mm。
  8. 根据权利要求6或7所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述波纹型可伸缩密封罩为波纹型可伸缩胶膜密封罩。
  9. 根据权利要求8所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述波纹型可伸缩胶膜密封罩的壁厚为0.8～1mm。
  10. 根据权利要求8或9所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述波纹型可伸缩胶膜密封罩在自然状态下的内腔与所述柱状多孔泡沫引流块之间的间隙为2mm～8mm。
  11. 根据权利要求8-10任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述波纹型可伸缩胶膜密封罩的上端的所述管状接口的壁厚为2mm～4mm。
  12. 根据权利要求6-8任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述波纹型可伸缩密封罩为塑料可伸缩波纹管密封罩。
  13. 根据权利要求12所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述塑料可伸缩波纹管密封罩的壁厚为0.3mm～0.6mm。
  14. 根据权利要求12或13所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述塑料可伸缩波纹管密封罩在自然状态下的内腔与所述柱状多孔泡沫引流块之间的最小间隙为2mm～8mm。
  15. 根据权利要求12-14任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述塑料可伸缩波纹管密封罩的上端的所述管状接口的壁厚为1mm～3mm。
  16. 根据权利要求1-15任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述引流管包括相互连接的连接管段和引流段，所述连接管段与所述储液容器连接，所述引流段的远离所述连接管段的一端与所述柱状多孔泡沫引流块连接，所述连接管段为中空内腔，所述引流段具有内腔，所述引流段设置有与所述内腔连通的缺口。
  17. 根据权利要求16所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述引流管的外径为6mm，内径为4mm。
  18. 根据权利要求16或17所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述缺口为设置于所述引流段的管壁的槽。
  19. 根据权利要求18所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述槽的数量为4条，所述引流段被所述槽分隔成4部分。
  20. 根据权利要求19所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述引流段的所述内腔设置有用于支撑所述引流段的管壁的十字交叉支撑筋，所述十字交叉支撑筋的4端分别连接于所述槽的4部分。
  21. 根据权利要求16或17所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述引流管为变径管，所述变径管的所述变径段的直径为12mm-24mm。
  22. 根据权利要求21所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述连接管段的外径为6mm，内径为4mm。
  23. 根据权利要求21或22所述的用于深腔创面手术护理中的负压封闭 引流系统，其特征在于，所述缺口为设置于所述引流段的管壁的侧孔。
  24. 根据权利要求23所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，所述引流段的所述内腔设置有用于支撑所述引流段的管壁的锯齿形支撑筋，所述锯齿形支撑筋位于所述内腔的上壁，且所述锯齿形支撑筋的齿尖朝向所述变径管的管轴。
  25. 根据权利要求16-24任一项所述的用于深腔创面手术护理中的负压封闭引流系统，其特征在于，在所述连接管段有一根冲洗管插入所述中空内腔，在接近所述引流段时，所述冲洗管被引出，引出的所述冲洗管与所述引流段平行。
PCT/CN2017/085628 2016-06-15 2017-05-24 用于深腔创面手术护理中的负压封闭引流系统 WO2017215418A1 (zh)

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