CN107551331B - Pressure limiting device for negative pressure drainage device for pleuroperitoneal cavity - Google Patents
Pressure limiting device for negative pressure drainage device for pleuroperitoneal cavity Download PDFInfo
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- CN107551331B CN107551331B CN201710826193.XA CN201710826193A CN107551331B CN 107551331 B CN107551331 B CN 107551331B CN 201710826193 A CN201710826193 A CN 201710826193A CN 107551331 B CN107551331 B CN 107551331B
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- 238000004891 communication Methods 0.000 claims abstract description 55
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims abstract description 23
- 210000000115 thoracic cavity Anatomy 0.000 abstract description 9
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 210000004888 thoracic abdominal cavity Anatomy 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 210000000683 abdominal cavity Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000017074 necrotic cell death Effects 0.000 description 4
- 210000003815 abdominal wall Anatomy 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000968 intestinal effect Effects 0.000 description 2
- 208000003243 intestinal obstruction Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000001835 viscera Anatomy 0.000 description 2
- 206010017982 Gastrointestinal necrosis Diseases 0.000 description 1
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000002747 omentum Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
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Abstract
The invention discloses a pressure limiting device for a pleuroperitoneal cavity negative pressure drainage device, which comprises a flexible shell, a negative pressure connecting part, a drainage connecting part, a pressure stabilizing mechanism and a pressure limiting control mechanism, wherein the flexible shell is connected with the negative pressure connecting part; open ends at the top and the bottom of the flexible shell are respectively connected with the negative pressure connecting part and the drainage connecting part in a sealing way; the pressure stabilizing mechanism is arranged between the negative pressure connecting part and the drainage connecting part; the pressure limiting control mechanism comprises a blocking head and a supporting rod, the top end of the supporting rod is connected with the drainage connecting part, and the bottom end of the supporting rod is connected with the blocking head; the blocking head is opposite to the negative pressure communication port. The pressure stabilizing mechanism and the pressure limiting control mechanism can cooperatively act to control the blocking head to continuously and alternately block and open the negative pressure communication port, so that the negative pressure in the device is constant, and the limitation and stabilization of the negative pressure value of the suction thoracic cavity or abdominal cavity are realized.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a pressure limiting device for a negative pressure drainage device for the thoracic and abdominal cavity.
Background
The existing pleuroperitoneal cavity drainage devices have three types:
1. The principle of the negative pressure ball of the single-cavity drainage tube is that the negative pressure is formed by the elastic retractive force of the ball body wall after the negative pressure ball is pinched. Its advantages are convenient carrying about, small diameter, less wound on abdominal wall and less influence on viscera. However, the pressure is uncontrollable, the drainage effect is affected by too small pressure, and too large pressure is absorbed into the omentum and intestinal wall to cause the consequences of pipe blockage, intestinal obstruction, necrosis and the like; secondly, the capacity is limited, and when the drainage quantity is large, the drainage quantity needs to be replaced and emptied frequently; thirdly, an effective unidirectional valve control head is not arranged, and backflow is possible when the drainage liquid amount is large or the drainage liquid is extruded. The Chinese patent (application number 201520812916) issued to publication No. CN205163738U discloses a conjoined negative pressure ball drainage device, which is formed by connecting a spherical upper end drainage ball and a spherical lower end drainage ball through a one-way drainage valve, the drainage amount of the device is large, the device can be prevented from replacing the drainage ball device for a plurality of times, and meanwhile, the backflow can be avoided, but the pressure is still uncontrollable.
2. The negative pressure suction of the wall of the single-cavity pipe is based on the principle that the negative pressure is generated by connecting a negative pressure channel of the wall. The pressure can be adjusted, the requirement of larger negative pressure can be met, the suction effect on thick matters such as infection or necrosis is ideal, and more drainage liquid can be contained. However, the defect is very remarkable, firstly, the drainage tube is thick, the texture is hard, the damage to the abdominal wall is large, the influence on the viscera is also large, and the intestinal canal is easy to be pressed to cause obstruction and even necrosis; secondly, due to the lack of a pressure limiting device, the pressure rises sharply when the local cavity gap disappears, and a series of adverse consequences including intestinal obstruction, tissue necrosis and even massive hemorrhage appear, so that the life is endangered; thirdly, the portable electric heating cooker is very inconvenient to use and carry, and is difficult to apply in the open air under crude conditions.
3. The principle of the single-cavity pin foot negative pressure suction is that a fixed volume space is subjected to foot exhaust to form negative pressure. The pressure is relatively controllable, the requirement of large negative pressure can be met, the suction effect on thick substances is still good, and the carrying is relatively convenient. Firstly, a special person is required to pedal, and the requirement on manpower configuration is high; secondly, although the pressure can be adjusted according to the pedal force, the force is larger and difficult to accurately control; thirdly, the use is also relatively inconvenient, and the method is difficult to apply in the field and battlefield conditions.
All of the three pleuroperitoneal cavity drainage devices cannot meet the requirements of simplicity and convenience in use, constant and controllable pressure and large drainage quantity, so that the pleuroperitoneal cavity drainage device with the advantages of simplicity and convenience in use, constant and controllable pressure and good drainage effect is urgently needed.
Disclosure of Invention
Therefore, the invention aims to provide a pressure limiting device for a negative pressure drainage device for thoracic and abdominal cavities, aiming at the problem that the drainage pressure in the drainage device in the prior art cannot be constant and controllable, so as to limit and stabilize the negative pressure value of the suction thoracic cavity or abdominal cavity.
The pressure limiting device for the pleuroperitoneal cavity negative pressure drainage device comprises a flexible shell 1, a negative pressure connecting part 2, a drainage connecting part 3, a pressure stabilizing mechanism 4 and a pressure limiting control mechanism 5;
The open ends at the top and the bottom of the flexible shell 1 are respectively and hermetically connected with the negative pressure connecting part 2 and the drainage connecting part 3, and the negative pressure connecting part 2 and the drainage connecting part 3 are respectively provided with a negative pressure communication port and a drainage communication port;
The pressure stabilizing mechanism 4 is arranged between the negative pressure connecting part 2 and the drainage connecting part 3 and is used for providing axial elastic force for the negative pressure connecting part 2 and the drainage connecting part 3;
The pressure limiting control mechanism 5 comprises a blocking head 51 and a supporting rod 52, the top end of the supporting rod 52 is connected with the drainage connecting part 3, and the bottom end of the supporting rod 52 is connected with the blocking head 51; the blocking head 51 is opposite to the negative pressure communication port, and the diameter of the blocking head 51 is larger than the inner diameter of the negative pressure communication port;
The flexible casing 1 can axially stretch under the action of the negative pressure and the pressure stabilizing mechanism 4, and the drainage connecting part 3 and the pressure limiting control mechanism 5 can axially reciprocate relative to the negative pressure connecting part 2, so that the negative pressure communicating port can be alternately opened and blocked by the blocking head 51.
In some preferred embodiments of the present invention, the negative pressure communication port and the drainage communication port are respectively disposed at the center positions of the negative pressure connection portion 2 and the drainage connection portion 3, and respectively extend outwards to form a negative pressure connector 21 and a drainage connector 31; the top end of the supporting rod 52 is connected with the drainage connecting portion 3 through a communication joint 53, wherein the communication joint 53 is connected to the inner side of the drainage connecting portion 3 and is provided with a drainage port 531 communicated with the drainage communication port, and the top end of the supporting rod 52 is axially screwed with the communication joint 53.
In some preferred embodiments of the present invention, the flexible casing 1 has a corrugated or cylindrical shape, and the negative pressure connection part 2 and the drainage connection part 3 have a disc shape.
Further, the pressure stabilizing mechanism 4 is a cylindrical spring, and two ends of the cylindrical spring respectively support against the inner side surfaces of the negative pressure connecting portion 2 and the drainage connecting portion 3.
In other preferred embodiments of the present invention, the flexible casing 1 is in a cone shape, the drainage connection portion 3 is correspondingly in a cone shape and is attached to the inner side of the vertex of the flexible casing 1, and an opening is left on the vertex of the flexible casing 1 for the drainage tube connector 31 to pass through; the negative pressure connecting part 2 is disc-shaped and is inscribed at the vertebral bottom of the flexible shell 1; the pressure stabilizing mechanism 4 is a conical spring, the top end of the conical spring is propped against the drainage connecting portion 3, and the bottom end of the conical spring is propped against the end face of the negative pressure connecting portion 2.
In some preferred embodiments of the present invention, the negative pressure connection portion 2 is connected to the bottom end of the flexible housing 1 through a rigid connection ring 6, wherein the upper end of the rigid connection ring 6 is inscribed in the bottom end of the flexible housing 1, and the lower end of the rigid connection ring 6 is screwed or clamped with the negative pressure connection portion 2, and may also be connected through other sealing connection manners that facilitate disassembly and assembly. The arrangement of the rigid connection ring 6 can make the disassembly and assembly of the negative pressure connection part 2 and the flexible shell 1 more convenient, and especially the disassembly and the cleaning are more convenient when the flexible shell is plugged.
Regarding the arrangement of the pressure limiting control mechanism 5, in some preferred embodiments of the present invention, a groove is disposed at the center of the inner side of the drainage connection portion 3, the communication joint 53 is disc-shaped and is embedded in the groove, a threaded hole is disposed at the center of the communication joint 53 and is screwed with the support rod 52, and the drainage port 531 is disposed around the threaded hole.
Regarding the arrangement of the pressure limiting control mechanism 5, in other preferred embodiments of the present invention, the communication joint 53 is tubular, the upper end is connected to the drainage communication port, the lower end is provided with an internal thread and is screwed to the support rod 52, and the drainage port 531 is disposed on one side of the communication joint 53.
Further, a screwing groove for screwing the screwdriver is formed in the bottom of the blocking head 51 and/or the top of the supporting rod 52. After the screwdriver is inserted into the screwing groove from the negative pressure connector 21 or the drainage connector 31, the screwdriver can be rotated to drive the blocking head 51 and the supporting rod 52 to rotate, so that the screwing degree of the supporting rod 52 can be adjusted, the actual connection length of the supporting rod 52 can be adjusted, and the device is not required to be adjusted after being disassembled.
In addition, in some preferred embodiments of the present invention, the pressure stabilizing mechanism does not use a spring, and the flexible casing 1 has elasticity, and the flexible casing 1 itself can serve as the pressure stabilizing mechanism at the same time. In this case, the flexible casing 1 may have various shapes such as the bellows cylinder, the cylinder, and the cone, and the bellows cylinder is preferable.
The invention has the beneficial effects that:
1. When the pressure limiting device is used, the negative pressure connecting part 2 is connected with an external negative pressure source, the drainage connecting part 3 is connected with a drainage tube, and the drainage tube extends into the thoracic cavity or the abdominal cavity of a patient. When the negative pressure source is connected, the pressure stabilizing mechanism and the pressure limiting control mechanism can cooperatively act to enable the blocking head to continuously and alternately block and open the negative pressure communication port, so that the negative pressure in the device is constant, and further the limitation and stabilization of the negative pressure value of the suction thoracic cavity or the abdominal cavity are realized.
2. The negative pressure in the device is related to the deformation of the flexible shell 1, and the supporting rod 52 is in threaded connection with the communication joint 53, so that the rotatable supporting rod 52 controls the length of the pressure limiting control mechanism 5, and the effect of controlling the pressure is achieved. The longer the pressure limiting control mechanism 5 is, the smaller the shrinkage of the flexible shell 1 is when the negative pressure communication port is blocked by the blocking head 51, and the smaller the internal controllable constant negative pressure is; conversely, the shorter the pressure limiting control mechanism 5 is, the larger the contraction amount of the flexible casing 1 will be when the negative pressure communication port is blocked by the plug head 51, and the larger the internal controllable constant negative pressure will be. And the screw grooves at the bottom of the blocking head 51 and/or the top of the supporting rod 52 facilitate the adjustment.
Drawings
FIG. 1 is a schematic perspective view of embodiment 1 of the present invention;
FIG. 2 is a schematic diagram illustrating the disassembly of embodiment 1 of the present invention;
FIG. 3 is a schematic axial cross-section of example 1 of the present invention;
fig. 4 is a schematic perspective view of a pressure limiting control mechanism according to embodiment 1 of the present invention;
FIG. 5 is a schematic perspective view of embodiment 2 of the present invention;
FIG. 6 is a split schematic diagram of embodiment 2 of the present invention;
FIG. 7 is a schematic axial cross-section of embodiment 2 of the present invention;
FIG. 8 is a schematic perspective view of embodiment 3 of the present invention;
FIG. 9 is a split schematic of embodiment 3 of the present invention;
fig. 10 is a schematic axial cross-sectional view of embodiment 3 of the present invention.
Reference numerals
A flexible housing 1; a negative pressure connection part 2, a negative pressure connector 21; a drainage connection part 3 and a drainage connector 31; a pressure stabilizing mechanism 4; the pressure limiting control mechanism 5 is provided with a plug head 51, a support rod 52, a communication joint 53 and a drainage port 531; a rigid connection ring 6.
Detailed Description
The invention will be further illustrated with reference to specific examples. It should be understood that the following examples are illustrative of the present invention and are not intended to limit the scope of the present invention.
The top, bottom, upper and lower ends described herein are merely with respect to the orientation shown in the drawings and are not limited to the orientation of the device when in actual use.
Example 1
Fig. 1 to 3 show a pressure limiting device for a negative pressure drainage device for pleuroperitoneal cavity according to embodiment 1 of the present invention, which comprises a flexible housing 1, a negative pressure connecting portion 2, a drainage connecting portion 3, a pressure stabilizing mechanism 4 and a pressure limiting control mechanism 5.
The flexible casing 1 is in a corrugated tube shape, and the negative pressure connecting part 2 and the drainage connecting part 3 are in a disc shape and are respectively and hermetically connected with the opening ends at the top and the bottom of the flexible casing 1 in a inscription manner, as shown in fig. 3. The centers of the negative pressure connecting part 2 and the drainage connecting part 3 are respectively provided with a negative pressure communication port and a drainage communication port, and the negative pressure communication port and the drainage communication port respectively extend outwards to form a negative pressure connector 21 and a drainage connector 31.
The pressure stabilizing mechanism 4 is a cylindrical spring, and two ends of the cylindrical spring respectively support against the inner side surfaces of the negative pressure connecting part 2 and the drainage connecting part 3 and are used for providing axial elastic force for the negative pressure connecting part 2 and the drainage connecting part 3.
As shown in fig. 4, the pressure limiting control mechanism 5 includes a stopper head 51, a support rod 52, and a communication joint 53. The inner side center of the drainage connecting part 3 is provided with a groove, the communication joint 53 is disc-shaped and is embedded in the groove, the center of the communication joint 53 is provided with a threaded hole which is in threaded connection with the top end of the supporting rod 52, four drainage ports 531 are arranged around the threaded hole (of course, the number of the drainage ports is not limited to four), and the drainage ports 531 are communicated with the drainage communication ports. The top of the supporting rod 52 is provided with a screwing groove for screwing a screwdriver, so that when the supporting rod 52 is screwed into the threaded hole, the screwdriver can be used for adjusting by extending in the self-drainage connector 31, and the whole device is not required to be disassembled.
The plug head 51 is connected to the bottom end of the support rod 52 and is opposite to the negative pressure communication port, and the diameter of the plug head 51 is larger than the inner diameter of the negative pressure communication port.
The drainage connecting part 3 can do axial reciprocating motion relative to the negative pressure connecting part 2 under the action of the internal negative pressure and pressure stabilizing mechanism 4, the limiting control mechanism 5 can do axial reciprocating motion along with the limiting control mechanism, and meanwhile, the negative pressure communication port can be alternately blocked and opened by the blocking head 51.
Example 2
Fig. 5 to 7 show a pressure limiting device for a negative pressure drainage device for pleuroperitoneal cavity according to embodiment 2 of the present invention, which is different from embodiment 1 in that:
The flexible shell 1 is cylindrical, and the negative pressure connecting part 2 and the drainage connecting part 3 are in the shape of vertebral discs. The negative pressure connecting part 2 is connected to the bottom end of the flexible casing 1 through a rigid connecting ring 6, specifically, as shown in fig. 7, the upper end of the rigid connecting ring 6 is inscribed in the end part of the flexible casing 1, and the lower end of the rigid connecting ring 6 is provided with external threads and is in threaded connection with the negative pressure connecting part 2. The arrangement of the rigid connection ring 6 can make the disassembly and assembly of the negative pressure connection part 2 and the flexible shell 1 more convenient, and especially the disassembly and assembly and the cleaning are more convenient when the flexible shell is plugged.
In the pressure limiting control mechanism 5, the communication joint 53 is tubular, the upper end is communicated with the drainage communication port, the lower end is provided with internal threads and is in threaded connection with the support rod 52, the support rod 52 is shorter than the support rod 52 in the embodiment, the drainage port 531 is arranged on one side of the communication joint 53, a screwing groove for screwing a screwdriver is formed in the bottom of the plugging head 51, and therefore when the support rod 52 is screwed in, the screwdriver can be used for extending into the negative pressure connector 21 to be adjusted, and the whole device is not required to be detached.
Example 3
Fig. 8 to 10 show a pressure limiting device for a negative pressure drainage device for pleuroperitoneal cavity according to embodiment 3 of the present invention, which is different from embodiment 2 in that:
The flexible shell 1 is in a cone shape, the drainage connecting part 3 is correspondingly in a cone shape and is attached to the inner side of the cone top of the flexible shell 1, and an opening is reserved on the cone top of the flexible shell 1 for the drainage pipe joint 31 to pass through.
The pressure stabilizing mechanism 4 is a conical spring, the conical top end of the conical spring is propped against the drainage connecting part 3, and the conical bottom end of the conical spring is propped against the end face of the negative pressure connecting part 2.
Working principle:
when the above embodiments are used, the negative pressure connecting part 2 is connected with an external negative pressure source (the negative pressure source can provide a large and stable negative pressure) through the negative pressure connector 21, the drainage connecting part 3 is connected with a drainage tube through the drainage connector 31, and the drainage tube extends into the thoracic cavity or the abdominal cavity of a patient. In the initial state, the negative pressure communication port of the blocking head 51 and the negative pressure connecting part 2 is in a separated state, the whole device is internally communicated with a negative pressure source, negative pressure is generated, when the negative pressure is overlarge, the flexible shell 1 axially contracts and simultaneously moves with the limiting control mechanism 5 until the blocking head 51 blocks the negative pressure communication port on the negative pressure connecting part 2, and the negative pressure is not increased any more. When the liquid in the chest or abdominal cavity is gradually sucked into the device, the negative pressure in the device is reduced, the flexible shell 1 stretches under the action of the restoring force of the pressure stabilizing mechanism 4, and simultaneously moves with the pressure limiting control mechanism 5, and the blocking head 51 moves away from the negative pressure communication port on the negative pressure connecting part 2. When the negative pressure source is connected, the pressure stabilizing mechanism 4 and the pressure limiting control mechanism 5 cooperate, and the blocking head 51 can continuously and alternately block and open the negative pressure communication port, so that the negative pressure in the device is constant, and further the limitation and stabilization of the negative pressure value of the suction thoracic cavity or abdominal cavity are realized. The negative pressure in the device is related to the deformation of the flexible shell 1, and the supporting rod 52 is in threaded connection with the communication joint 53, so that the rotatable supporting rod 52 controls the length of the pressure limiting control mechanism 5. The longer the pressure limiting control mechanism 5 is, the smaller the shrinkage of the flexible shell 1 is when the negative pressure communication port is blocked by the blocking head 51, and the smaller the internal controllable constant negative pressure is; conversely, the shorter the pressure limiting control mechanism 5 is, the larger the contraction amount of the flexible casing 1 will be when the negative pressure communication port is blocked by the plug head 51, and the larger the internal controllable constant negative pressure will be.
In addition, the pressure stabilizing mechanism 4 may be a spring-free flexible casing, and when the flexible casing 1 itself has a certain restoring elastic force, the flexible casing 1 itself may serve as the pressure stabilizing mechanism 4 at the same time, and the corrugated tubular flexible casing having a certain elasticity of embodiment 1 may be preferred.
While the preferred embodiments of the present application have been illustrated and described, the present application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (2)
1. The pressure limiting device for the pleuroperitoneal cavity negative pressure drainage device is characterized by comprising a flexible shell (1), a negative pressure connecting part (2), a drainage connecting part (3), a pressure stabilizing mechanism (4) and a pressure limiting control mechanism (5);
The open ends of the top and the bottom of the flexible shell (1) are respectively and hermetically connected with the negative pressure connecting part (2) and the drainage connecting part (3), and the negative pressure connecting part (2) and the drainage connecting part (3) are respectively provided with a negative pressure communication port and a drainage communication port;
The pressure stabilizing mechanism (4) is arranged between the negative pressure connecting part (2) and the drainage connecting part (3) and is used for providing axial elastic force for the negative pressure connecting part (2) and the drainage connecting part (3);
The pressure limiting control mechanism (5) comprises a plug head (51) and a supporting rod (52), the top end of the supporting rod (52) is connected with the drainage connecting part (3), and the bottom end of the supporting rod (52) is connected with the plug head (51); the blocking head (51) is opposite to the negative pressure communication port, and the diameter of the blocking head (51) is larger than the inner diameter of the negative pressure communication port;
The flexible shell (1) can axially stretch under the action of negative pressure and the pressure stabilizing mechanism (4), the drainage connecting part (3) and the pressure limiting control mechanism (5) can axially reciprocate relative to the negative pressure connecting part (2) along with the drainage connecting part, and then the negative pressure communicating port can be alternately opened and blocked by the blocking head (51);
The negative pressure communication port and the drainage communication port are respectively arranged at the center positions of the negative pressure connecting part (2) and the drainage connecting part (3) and respectively extend outwards to form a negative pressure connector (21) and a drainage connector (31); the top end of the supporting rod (52) is connected with the drainage connecting part (3) through a communication joint (53), wherein the communication joint (53) is connected to the inner side of the drainage connecting part (3) and is provided with a drainage port (531) communicated with the drainage communication port, and the top end of the supporting rod (52) is axially screwed with the communication joint (53);
The flexible shell (1) is in a corrugated cylinder shape or a cylinder shape, and the negative pressure connecting part (2) and the drainage connecting part (3) are in a disc shape;
The pressure stabilizing mechanism (4) is a cylindrical spring, and two ends of the cylindrical spring respectively prop against the inner side surfaces of the negative pressure connecting part (2) and the drainage connecting part (3);
the drainage connecting portion (3) is characterized in that a groove is formed in the center of the inner side of the drainage connecting portion, the communication joint (53) is disc-shaped and embedded in the groove, a threaded hole is formed in the center of the communication joint (53) and is in threaded connection with the supporting rod (52), and the drainage opening (531) is formed in the periphery of the threaded hole.
2. The pressure limiting device for the negative pressure drainage device for the pleuroperitoneal cavity according to claim 1, wherein a screwing groove for screwing a screw driver is formed in the top of the supporting rod (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826193.XA CN107551331B (en) | 2017-09-14 | 2017-09-14 | Pressure limiting device for negative pressure drainage device for pleuroperitoneal cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710826193.XA CN107551331B (en) | 2017-09-14 | 2017-09-14 | Pressure limiting device for negative pressure drainage device for pleuroperitoneal cavity |
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| CN107551331A CN107551331A (en) | 2018-01-09 |
| CN107551331B true CN107551331B (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710826193.XA Active CN107551331B (en) | 2017-09-14 | 2017-09-14 | Pressure limiting device for negative pressure drainage device for pleuroperitoneal cavity |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109364309A (en) * | 2018-11-30 | 2019-02-22 | 江阴市人民医院 | A kind of negative pressure drainage device |
| CN113975475A (en) * | 2021-10-27 | 2022-01-28 | 王晶 | Flow-controllable negative pressure drainage device for orthopedic postoperative care |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7815616B2 (en) * | 2002-09-16 | 2010-10-19 | Boehringer Technologies, L.P. | Device for treating a wound |
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| US4484908A (en) * | 1981-04-21 | 1984-11-27 | Bioresearch Inc. | Method for relieving excess negativity in a drainage device |
| US6024731A (en) * | 1995-10-18 | 2000-02-15 | Summit Medical Ltd. | Wound drainage system |
| CN2281796Y (en) * | 1996-10-11 | 1998-05-20 | 刘海涛 | Disposable portable drainage device |
| CN101711895A (en) * | 2002-11-28 | 2010-05-26 | 住友电木株式会社 | Body fluid suction and collection unit |
| CN2703673Y (en) * | 2004-05-11 | 2005-06-08 | 祁梅均 | Vacuum constant-speed cruising device for automobile |
| KR100868360B1 (en) * | 2007-07-20 | 2008-11-12 | 이지메디케어(주) | A medical suction unit |
| CN102089018A (en) * | 2008-07-11 | 2011-06-08 | 凯希特许有限公司 | Manually-actuated, reduced-pressure systems for treating wounds |
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| CN107551331A (en) | 2018-01-09 |
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