CN201519362U - Superficial wound surface negative-pressure close drainage system - Google Patents
Superficial wound surface negative-pressure close drainage system Download PDFInfo
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- CN201519362U CN201519362U CN2009202282261U CN200920228226U CN201519362U CN 201519362 U CN201519362 U CN 201519362U CN 2009202282261 U CN2009202282261 U CN 2009202282261U CN 200920228226 U CN200920228226 U CN 200920228226U CN 201519362 U CN201519362 U CN 201519362U
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- porous foam
- foam cushion
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- drainage tube
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Abstract
A superficial tissue negative-pressure close drainage system comprises a porous foam soft mat (1) in contact with a superficial wound, a drainage tube (2) provided with a side hole, a seal film (3), a connector (4), a drainage container (5), a negative pressure source (6), and a pillar (8) arranged in the porous foam soft mat (1). The utility model overcomes the defect of the traditional drainage system that aperture gaps or vesicles of the porous foam soft mat are compacted easily, so that the negative-pressure conduction collusion efficiency of the aperture gaps and the vesicles is reduced, or the negative-pressure conduction function among the vesicles even disappears. In the utility model, the aperture gaps in the porous foam soft mat and vesicles which are mutually communicated are enabled to remain a normal state or deformed slightly, thereby reducing the possibility of drainage failure caused by the reason that drain blocks the tube, facilitating the growth of granulation of a superficial tissue wound, and reducing the healing time of the superficial tissue wound.
Description
Technical field
This utility model relates to body surface organization's negative-pressure sealed drainage system.It is to aim at various body surface organizations ulceration district treatment and design a kind of is used for the device to reason wound, burn, infection, compressing, endocrine disturbance, vascular occlusion, radio exposure, operation, postoperative complication, worm Serpentis sting and bite, former resulting wound surface such as freezing wound carries out the negative-pressure sealed drainage treatment.
Background technology
Negative-pressure sealed drainage technology (vacuum sealing drainage/VSD is called for short the VSD technology) is that German ULM Wim doctor Fleischman of university initiated in 1992, and forms theoretical blank, is used for the drain of extremity wound surface; Chinese professor Qiu Huade was applied to department of general surgery with the VSD technology first in 1994, started the beginning that the VSD technology is used in department of general surgery, Wang Yanfeng, Qiu Huade professor in authorized patent CN 2276350 on March 18th, 1998, is first patent of VSD technology in China.From then on, the VSD technology has obtained bigger development in China.
Existing VSD technology basic configuration comprises negative pressure source (comprising the central negative pressure device that medical attractor or hospital use), drainage tube, breathable films (hereinafter to be referred as sealing film), joint (comprising two pass joints, three way cock or multiple-pass joint), the drainage container of polyvinyl alcohol foam or other medical porous foam, sponge or gauze (hereinafter to be referred as the porous foam cushion), Pasting sealing usefulness are formed.Its version is: the drainage tube of an end band side opening (is generally two pipes of parallel placement, the porous foam cushion of small dimension is a pipe, big slightly specification, three of general parallel placements pipe or more than) feed in the hole-drilled porous foam cushion, when using polylith porous foam cushion, by three way cock, two pass joints or multiple-pass joint the port of export of drainage tube is merged into an outlet again, connect the negative pressure source drain, with liquefied material drains such as the fragment of tissue of the oozing of blood in the tissue, sepage, liquefaction and necrosis and puss to drainage container.
In the practical application, the porous foam cushion is wrapped up many side openings drainage tube, be placed on the wound surface or the wound intracavity, the reuse sealing film tightly seals the porous foam cushion and the drainage tube port of export, make it to be hedged off from the outer world, connect negative pressure source, just formed an efficient drainage system (VSD system).In this system, negative pressure is delivered to the porous foam cushion through the rigidity of drainage tube, and can negative pressure be distributed in each point on the porous foam cushion along with the trend of drainage tube.Because the bubble of the hole in the porous foam cushion interconnects and high resilience, negative pressure can arrive the every bit in target drain district, forms an omnibearing drain.Block derivated bigger, that quality is not too hard can be cut apart with plasticity under suction function becomes graininess, enters drainage tube through the hole of porous foam cushion or the hole bubble that connects mutually, is sucked rapidly in the drainage container again; The bulk derivated that may stop up drainage tube is then stopped by the porous foam cushion, can only leave body with the porous foam cushion when removing or change drain attached to porous foam cushion surface.The sealing of sealing film is maintained the negative pressure as drain power, also makes by the drain district simultaneously to be hedged off from the outer world, and has prevented pollution and cross infection effectively.Because negative pressure is through being uniformly distributed in by the surface in drain district as mesomeric soft porous foam cushion, contingent internal organs or tissue is sucked out or pressurized and complication (" negative-pressure sealed drainage technology " the 2nd edition P3-P4, Qiu Huade Song Jiuhong chief editor publishes the People's Health Publisher) such as the ischemia that causes, necrosis, perforation in the time of can preventing single drainage tube negative pressure drainage effectively.
Compare with existing common dressing change, the VSD technology can will be removed at the right time by exudate in the drain district and slough, can be reached " nil product is poly-" state in the drain district, wound surface can obtain clean environment soon, reduces the heavily absorption of body contratoxin greatly; Even there is bigger lacuna to exist, lacuna also will quicken to dwindle because of the existence of negative pressure, and for shallow table wound surface, sealing film and porous foam cushion also make the more approaching physiological moisture state of local environment; The negative pressure that acts on the wound surface soft tissue stimulates, and helps the improvement of local microenvironment and disappearing of tissue edema, has quickened the new life of granulation tissue in the wound surface, shortens wound healing time; In 3-7 days of VSD treatment, all do not need to change dressings again, reduced medical personnel's workload, reduced the patient suffering, reduced the general practice expense.
The VSD technology is widely used in China: fields such as traumatology department, orthopaedics, department of general surgery, Department of B urn.
But existing VSD technology is in the use of surface wound drain, still exist as: it is few that drainage tube goes out pipe, and the sealing difficulty forms problems such as " branch nets " easily, for the problems referred to above, inventor Song nine is grand to have applied for a collection of patent, and number of patent application is: 200920228003.5, and 200920228004.X, 200920228005.4,200920228006.9,200920228007.3,200920228008.8 etc.; But in use also there are the following problems for the VSD technology of above-mentioned patent applied for: 1., negative pressure is conducted in the porous foam cushion by drainage tube, each hole bubble in the porous foam cushion all has holes, connect mutually by each holes between each hole bubble, therefore when negative pressure is had an effect, the atmospheric pressure extruding that the sealed thin film of porous foam cushion is outer, so hole in the porous foam cushion or the hole bubble that connects mutually are crushed, even compacting fully, make the negative pressure conduction between the bubble of hole or hole gang up decrease in efficiency, even the negative pressure conduction function is completely lost between Kong Pao.2., the elasticity of porous foam cushion is crushed under suction function, make the loss of elasticity of porous foam cushion, thereby make the porous foam cushion keep the elastic construction forfeiture of vacuum environment.Above reason causes easily by the drain situation that causes stopping up drainage tube of condensing and increases, and has reduced drainage efficiency, thereby has had a strong impact on drainage effect, prolongs the healing time of wound surface.
Therefore, existing VSD technology is improved in the use in the surface wound tissue healing become a very urgent important process.
Summary of the invention
The purpose of this utility model is to overcome gangs up structure weak point such as forfeiture easily between hole in the porous foam cushion in the above-mentioned existing negative-pressure sealed drainage system or the hole bubble, and a kind of body surface organization negative-pressure sealed drainage system is provided.
The purpose of this utility model reaches by following measure: body surface organization's negative-pressure sealed drainage system, it comprises the porous foam cushion that contacts with surface wound, the drainage tube of band side opening, sealing film, joint, drainage container, negative pressure source, sealing film are sealed in the exit that reaches drainage tube on the porous foam cushion, drainage tube feeds in the drainage container, drainage container connects negative pressure source, it is characterized in that it also comprises pillar, and described pillar is positioned at the porous foam cushion.
In technique scheme, described drainage tube is a pipe, and is positioned at the top of porous foam cushion or porous foam cushion.
In technique scheme, described drainage tube is two to five pipes of parallel placement, is positioned at the top of porous foam cushion or porous foam cushion.
In technique scheme, described drainage tube is at least two cross-coupled integral structures, and is positioned at the top of porous foam cushion.
In technique scheme, described drainage tube or be " well " font, or be " ten " font, or be other chi structure.
In technique scheme, on the described porous foam cushion fluting is arranged, described drainage tube is positioned at the fluting on the porous foam cushion.
In technique scheme, jagged on the described pillar that is positioned at the porous foam cushion.
In technique scheme, described pillar is regular distribution in the porous foam cushion.
In technique scheme, described pillar is " T " font structure.
This utility model body surface organization negative-pressure sealed drainage system has following advantage: 1., pillar make the porous foam cushion between body surface organization's wound surface and sealing film, stand up the support effect, the hole bubble that makes the hole in the porous foam cushion and connect mutually all keeps normal condition, make liquefied materials such as the fragment of tissue of oozing of blood in body surface organization's wound surface, sepage, liquefaction and necrosis and pus can be smoothly by hole and the hole bubble drain that connects mutually to drainage tube, reduced because the possibility that the drain plugging causes drain to fail.2., the supporting role of pillar makes the porous foam cushion keep the elastic construction maintenance normal condition of vacuum environment, reduced because the effect of negative pressure makes the porous foam cushion contact closely with surface wound formation, make the growth of porous foam cushion and surface wound cell form the probability of unnecessary adhesion, help the growth of body surface organization's wound surface granulation, reduced the time of body surface organization's wound healing.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structure chart that the drainage tube of two parallel placements is positioned at the porous foam cushion.
Fig. 3 is a kind of structure chart of drainage tube between porous foam cushion and sealing film.
Fig. 4 is the another kind of structure chart of drainage tube between porous foam cushion and sealing film.
Fig. 5 is positioned at the structural representation of porous foam cushion for drainage tube.
Fig. 6 is positioned at the height comparison diagram of porous foam cushion for drainage tube under the normal condition.
Fig. 7 is the contraction state figure of Fig. 6 porous foam cushion under negative pressure state.
Fig. 8 is Fig. 6 increases pillar at porous foam cushion under negative pressure state contraction state figure.
Fig. 9 is the structure vertical view of decussation drainage tube, porous foam cushion and pillar.
Figure 10 is the structure vertical view of groined type intersection drainage tube, porous foam cushion and pillar.
1. porous foam cushions among the figure, the 2. drainage tube of band side opening, 3. sealing film, 4. joint, 5. drainage container, 6. negative pressure source, 7. fluting, 8. pillar (suitable), 9. burr with the porous foam cushion height under the normal condition.
The specific embodiment
Describe performance of the present utility model in detail below in conjunction with accompanying drawing, but they do not constitute to qualification of the present utility model, only do for example.Simultaneously by illustrating that advantage of the present utility model will become clear more and understand (dotted portion among the figure is invisible part) easily.
Consult accompanying drawing as can be known: this utility model body surface organization negative-pressure sealed drainage system, it comprises the porous foam cushion 1 that contacts with surface wound, the drainage tube 2 of band side opening, sealing film 3, joint 4, drainage container 5, negative pressure source 6, sealing film 3 is sealed in the exit that reaches drainage tube 2 on the porous foam cushion 1, drainage tube 2 feeds in the drainage container 5, drainage container 5 connects negative pressure source 6, and it also comprises pillar 8, and described pillar 8 is positioned at porous foam cushion 1 (as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8).
In this structure, the effect that pillar makes the porous foam cushion stand up between body surface organization's wound surface and sealing film and support, the hole bubble that makes the hole in the porous foam cushion and connect mutually all keeps normal condition, make liquefied materials such as the fragment of tissue of oozing of blood in body surface organization's wound surface, sepage, liquefaction and necrosis and pus can be smoothly by hole and the hole bubble drain that connects mutually to drainage tube, reduced because the possibility that the drain plugging causes drain to fail.
On the porous foam cushion 1 fluting is arranged, described drainage tube 2 is positioned at the fluting 7 on the porous foam cushion 1.The drainage tube of this X-type is placed in the porous foam cushion, make things convenient for the location of porous foam cushion, saved the boring of puncher in the porous foam cushion simultaneously, can overcome artificially unbalanced (as shown in Figure 4) to Wound-surface negative pressure of causing simultaneously because of arbitrarily putting of drainage tube.
Be positioned at jagged 9 (as Fig. 3, Fig. 4, Fig. 5, shown in Figure 8) on the pillar 8 of porous foam cushion 1.Burr 9 on the pillar 8 can be as a whole with fixing between pillar and the porous foam cushion, and pillar is not easy to transfer to.
When negative pressure drainage, because the effect that pillar makes the porous foam cushion stand up between body surface organization's wound surface and sealing film and support, the hole bubble that makes the hole in the porous foam cushion and connect mutually all keeps normal condition or the distortion of porous foam cushion less (as Fig. 6, Fig. 7, three kinds of states comparison diagram down shown in Figure 8), makes liquefied materials such as the fragment of tissue of oozing of blood in body surface organization's wound surface, sepage, liquefaction and necrosis and pus steep drain to drainage tube by the hole of hole and perforation mutually smoothly.The supporting role of pillar can make the porous foam cushion keep the elastic construction of vacuum environment simultaneously and keep normal condition or less deformation only takes place the porous foam cushion, reduced because the effect of negative pressure makes the porous foam cushion contact closely with surface wound formation, the part that porous foam cushion and surface wound cell are grown forms the probability of unnecessary adhesion, help the growth of body surface organization's wound surface granulation, reduced the time of body surface organization's wound healing.
Need to prove: to those of ordinary skill in the art, can also make some changes or distortion to this utility model under the prerequisite that does not change this utility model principle, this belongs to protection domain of the present utility model equally.
Claims (9)
1. body surface organization's negative-pressure sealed drainage system, it comprises the porous foam cushion (1) that contacts with surface wound, the drainage tube (2) of band side opening, sealing film (3), joint (4), drainage container (5), negative pressure source (6), sealing film (3) is sealed in porous foam cushion (1) and goes up the exit that reaches drainage tube (2), drainage tube (2) feeds in the drainage container (5), drainage container (5) connects negative pressure source (6), it is characterized in that it also comprises pillar (8), and described pillar (8) is positioned at porous foam cushion (1).
2. body surface organization according to claim 1 negative-pressure sealed drainage system is characterized in that described drainage tube (2) is a pipe, and is positioned at the top of porous foam cushion (1) or porous foam cushion (1).
3. body surface organization according to claim 1 negative-pressure sealed drainage system is characterized in that described drainage tube (2) is two to five pipes of parallel placement, is positioned at the top of porous foam cushion (1) or porous foam cushion (1).
4. body surface organization according to claim 1 negative-pressure sealed drainage system is characterized in that described drainage tube (2) is at least two cross-coupled integral structures, and is positioned at the top of porous foam cushion (1).
5. body surface organization according to claim 4 negative-pressure sealed drainage system is characterized in that described drainage tube (2) or is " well " font, or be " ten " font, or is other chi structure.
6. body surface organization according to claim 5 negative-pressure sealed drainage system is characterized in that fluting (7) is arranged on the described porous foam cushion (1), and described drainage tube (2) is positioned at the fluting (7) on the porous foam cushion (1).
7. according to claim 1 or 2 or 3 or 6 described body surface organization negative-pressure sealed drainage systems, it is characterized in that the described pillar (8) last jagged (9) that is positioned at porous foam cushion (1).
8. body surface organization according to claim 7 negative-pressure sealed drainage system is characterized in that described pillar (8) is regular distribution in porous foam cushion (1).
9. body surface organization according to claim 8 negative-pressure sealed drainage system is characterized in that described pillar (8) is " T " font structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202282261U CN201519362U (en) | 2009-09-17 | 2009-09-17 | Superficial wound surface negative-pressure close drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202282261U CN201519362U (en) | 2009-09-17 | 2009-09-17 | Superficial wound surface negative-pressure close drainage system |
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| Publication Number | Publication Date |
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| CN201519362U true CN201519362U (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202282261U Expired - Fee Related CN201519362U (en) | 2009-09-17 | 2009-09-17 | Superficial wound surface negative-pressure close drainage system |
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Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649000A (en) * | 2012-05-09 | 2012-08-29 | 李孝建 | Negative pressure sealing drainage device and operation method |
| CN104117131A (en) * | 2014-07-22 | 2014-10-29 | 翁跃勤 | Negative pressure incision healing device and method |
| CN105007870A (en) * | 2013-03-14 | 2015-10-28 | 史密夫及内修公开有限公司 | Compressible wound fillers and systems and methods of use in treating wounds with negative pressure |
| CN106974683A (en) * | 2011-02-04 | 2017-07-25 | 马萨诸塞州大学 | Negative Pressure Wound Closure Device |
| US10660992B2 (en) | 2013-10-21 | 2020-05-26 | Smith & Nephew, Inc. | Negative pressure wound closure device |
| US10702420B2 (en) | 2012-05-22 | 2020-07-07 | Smith & Nephew Plc | Wound closure device |
| US11083631B2 (en) | 2012-07-16 | 2021-08-10 | University Of Massachusetts | Negative pressure wound closure device |
| US11123474B2 (en) | 2013-07-16 | 2021-09-21 | Smith & Nephew Plc | Apparatuses and methods for wound therapy |
| US11123476B2 (en) | 2017-06-14 | 2021-09-21 | Smith & Nephew, Inc. | Fluid removal management and control of wound closure in wound therapy |
| US11123226B2 (en) | 2012-05-22 | 2021-09-21 | Smith & Nephew Plc | Apparatuses and methods for wound therapy |
| US11166726B2 (en) | 2011-02-04 | 2021-11-09 | University Of Massachusetts | Negative pressure wound closure device |
| US11241337B2 (en) | 2012-05-24 | 2022-02-08 | Smith & Nephew, Inc. | Devices and methods for treating and closing wounds with negative pressure |
| US11324876B2 (en) | 2017-06-13 | 2022-05-10 | Smith & Nephew Plc | Collapsible structure and method of use |
| US11375923B2 (en) | 2017-08-29 | 2022-07-05 | Smith & Nephew Plc | Systems and methods for monitoring wound closure |
| US11395873B2 (en) | 2017-06-14 | 2022-07-26 | Smith & Nephew, Inc. | Control of wound closure and fluid removal management in wound therapy |
| US11419767B2 (en) | 2013-03-13 | 2022-08-23 | University Of Massachusetts | Negative pressure wound closure device and systems and methods of use in treating wounds with negative pressure |
| US11439539B2 (en) | 2015-04-29 | 2022-09-13 | University Of Massachusetts | Negative pressure wound closure device |
| US11471586B2 (en) | 2015-12-15 | 2022-10-18 | University Of Massachusetts | Negative pressure wound closure devices and methods |
| US11583623B2 (en) | 2017-06-14 | 2023-02-21 | Smith & Nephew Plc | Collapsible structure for wound closure and method of use |
| US11590030B2 (en) | 2017-08-07 | 2023-02-28 | Smith & Nephew Plc | Wound closure device with protective layer and method of use |
| US11607344B2 (en) | 2017-07-27 | 2023-03-21 | Smith & Nephew Plc | Customizable wound closure device and method of use |
| US11617684B2 (en) | 2016-11-02 | 2023-04-04 | Smith & Nephew, Inc. | Wound closure devices |
| US11724020B2 (en) | 2017-06-14 | 2023-08-15 | Smith & Nephew Plc | Collapsible sheet for wound closure and method of use |
| US11872110B2 (en) | 2017-06-13 | 2024-01-16 | Smith & Nephew Plc | Wound closure device and method of use |
-
2009
- 2009-09-17 CN CN2009202282261U patent/CN201519362U/en not_active Expired - Fee Related
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106974683A (en) * | 2011-02-04 | 2017-07-25 | 马萨诸塞州大学 | Negative Pressure Wound Closure Device |
| CN106974683B (en) * | 2011-02-04 | 2020-02-21 | 马萨诸塞州大学 | Negative pressure wound closure device |
| US11166726B2 (en) | 2011-02-04 | 2021-11-09 | University Of Massachusetts | Negative pressure wound closure device |
| CN102649000A (en) * | 2012-05-09 | 2012-08-29 | 李孝建 | Negative pressure sealing drainage device and operation method |
| US11123226B2 (en) | 2012-05-22 | 2021-09-21 | Smith & Nephew Plc | Apparatuses and methods for wound therapy |
| US11559439B2 (en) | 2012-05-22 | 2023-01-24 | Smith & Nephew Plc | Wound closure device |
| US10702420B2 (en) | 2012-05-22 | 2020-07-07 | Smith & Nephew Plc | Wound closure device |
| US11241337B2 (en) | 2012-05-24 | 2022-02-08 | Smith & Nephew, Inc. | Devices and methods for treating and closing wounds with negative pressure |
| US11564843B2 (en) | 2012-07-16 | 2023-01-31 | University Of Massachusetts | Negative pressure wound closure device |
| US11083631B2 (en) | 2012-07-16 | 2021-08-10 | University Of Massachusetts | Negative pressure wound closure device |
| US11419767B2 (en) | 2013-03-13 | 2022-08-23 | University Of Massachusetts | Negative pressure wound closure device and systems and methods of use in treating wounds with negative pressure |
| US11097044B2 (en) | 2013-03-14 | 2021-08-24 | Smith & Nephew Plc | Compressible wound fillers and systems and methods of use in treating wounds with negative pressure |
| CN105007870A (en) * | 2013-03-14 | 2015-10-28 | 史密夫及内修公开有限公司 | Compressible wound fillers and systems and methods of use in treating wounds with negative pressure |
| US11123474B2 (en) | 2013-07-16 | 2021-09-21 | Smith & Nephew Plc | Apparatuses and methods for wound therapy |
| US10660992B2 (en) | 2013-10-21 | 2020-05-26 | Smith & Nephew, Inc. | Negative pressure wound closure device |
| CN104117131A (en) * | 2014-07-22 | 2014-10-29 | 翁跃勤 | Negative pressure incision healing device and method |
| US11439539B2 (en) | 2015-04-29 | 2022-09-13 | University Of Massachusetts | Negative pressure wound closure device |
| US11471586B2 (en) | 2015-12-15 | 2022-10-18 | University Of Massachusetts | Negative pressure wound closure devices and methods |
| US11617684B2 (en) | 2016-11-02 | 2023-04-04 | Smith & Nephew, Inc. | Wound closure devices |
| US11324876B2 (en) | 2017-06-13 | 2022-05-10 | Smith & Nephew Plc | Collapsible structure and method of use |
| US11872110B2 (en) | 2017-06-13 | 2024-01-16 | Smith & Nephew Plc | Wound closure device and method of use |
| US11395873B2 (en) | 2017-06-14 | 2022-07-26 | Smith & Nephew, Inc. | Control of wound closure and fluid removal management in wound therapy |
| US11583623B2 (en) | 2017-06-14 | 2023-02-21 | Smith & Nephew Plc | Collapsible structure for wound closure and method of use |
| US11123476B2 (en) | 2017-06-14 | 2021-09-21 | Smith & Nephew, Inc. | Fluid removal management and control of wound closure in wound therapy |
| US11690948B2 (en) | 2017-06-14 | 2023-07-04 | Smith & Nephew, Inc. | Fluid removal management and control of wound closure in wound therapy |
| US11724020B2 (en) | 2017-06-14 | 2023-08-15 | Smith & Nephew Plc | Collapsible sheet for wound closure and method of use |
| US11938002B2 (en) | 2017-06-14 | 2024-03-26 | Smith & Nephew, Inc. | Control of wound closure and fluid removal management in wound therapy |
| US11607344B2 (en) | 2017-07-27 | 2023-03-21 | Smith & Nephew Plc | Customizable wound closure device and method of use |
| US11590030B2 (en) | 2017-08-07 | 2023-02-28 | Smith & Nephew Plc | Wound closure device with protective layer and method of use |
| US11375923B2 (en) | 2017-08-29 | 2022-07-05 | Smith & Nephew Plc | Systems and methods for monitoring wound closure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan VSD Medical Science & Technology Co., Ltd. Assignor: Song Jiuhong Contract record no.: 2011420000066 Denomination of utility model: Superficial wound surface negative-pressure close drainage system Granted publication date: 20100707 License type: Exclusive License Record date: 20110509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20170917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |