CN203577101U - Pressure regulating type inflation valve - Google Patents
Pressure regulating type inflation valve Download PDFInfo
- Publication number
- CN203577101U CN203577101U CN201320803299.5U CN201320803299U CN203577101U CN 203577101 U CN203577101 U CN 203577101U CN 201320803299 U CN201320803299 U CN 201320803299U CN 203577101 U CN203577101 U CN 203577101U
- Authority
- CN
- China
- Prior art keywords
- valve core
- housing
- shell
- nonreturn valve
- pressure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
A pressure regulating type inflation valve comprises a shell and a check valve core. Openings are formed in the middle of the upper end of the shell and the middle of the lower end of the shell respectively. The air injection opening end of the check valve core extends out of the opening in the upper end of the shell. The air outlet end of the check valve core is opposite to the opening in the lower end of the shell. Threads and a nut are arranged on the outer wall of the check valve core. The lower end of the nut is connected with a guide gasket. Vent holes are formed in the gasket. A plurality of guide grooves are formed in the edge of the guide gasket. Guide protruding columns are distributed on the inner wall of the shell and matched with the guide grooves in the guide gasket. A boss is arranged on the inner edge of the bottom of the shell. Small supporting columns are arranged on the portion, between the boss and the inner edge, of the bottom of the shell. The check valve core is arranged on the small supporting columns. An exhaust passageway is reserved between the outer edge of the bottom of the check valve core and the boss. A sealing gasket is arranged on the exhaust passageway. A pressure limiting spring is arranged between the sealing gasket and the guide gasket. Pressure limiting scales are arranged on the outer wall of the shell. An exhaust opening is formed in one side of the top end of the shell. The pressure regulating type inflation valve is simple in structure and convenient to use, and allows the pressure inside a sleeve bag to be conveniently regulated and controlled.
Description
Technical field
This utility model relates to medical apparatus and instruments, in particular for a kind of pressure-adjustable type charge valve of cuff for endotracheal catheter.
Background technology
Endotracheal tube is a kind of conventional medical apparatus, and its structure is that the outer wall of endotracheal tube lower end is provided with a cuff, between cuff and pilot balloon, by gas tube, is connected, and pilot balloon is connected with a unidirectional charge valve again.When after patient's tracheal intubation, between endotracheal tube retention period, need to inject appropriate gas in the cuff on endotracheal tube, thereby prevent that mouthful intracavity liquid from flowing in trachea, and prevent from when mechanical assistance from breathing leaking gas.But the cuff after gas injection can produce pressure to tracheal mucosa, when this pressure exceedes the perfusion pressure of tracheal mucosa blood capillary, will make the tracheal mucosa ischemia of pressurized, thereby produce a series of complication.For preventing that the compressing of cuff from causing the damage of tracheal mucosa, is necessary to limit the pressure in cuff.The main method of monitoring cuff pressure has sense of touch method at present, electronics cuff pressure controller etc., its operating process is first to use gas injection device (syringe, cuff manometer etc.) to charge valve, inflate cuff is heaved, then by pinching the pilot balloon of pressing on charge valve, estimate the pressure in cuff, because existing charge valve is check valve, when cuff hypertonia, need to reduce pressure with gas injection device pumpback, sense of touch method is inaccurate to the pressure estimation in cuff, and between everyone, there is very big difference, and electronics cuff pressure controller belongs to the additional combinations auxiliary device of controlling cover intraluminal pressure, owing to using the factors such as inconvenient and expensive, be not promoted clinically.
Summary of the invention
The purpose of this utility model is improved above shortcoming exactly, provides simple in structure, easy to use, can facilitate the pressure-adjustable type charge valve of regulation and control cuff pressure.
Concrete scheme of the present utility model is: pressure-adjustable type charge valve, include housing and nonreturn valve core, the middle part of housing top and bottom is equipped with opening, it is characterized in that: the gas injection port end of described nonreturn valve core stretches out the upper end open of housing, the gas outlet end of nonreturn valve core is relative with housing lower ending opening, the outer wall of nonreturn valve core is provided with screw thread and has nut, nut below is fastenedly connected guiding collar, on guiding collar, have several passages, the edge of guiding collar is provided with some gathering sills, inner walls is provided with several guiding projections of longitudinally arranging, guiding projection matches with the gathering sill on guiding collar, the inside edge, bottom of housing is provided with a circle boss, housing bottom between boss inside edge is provided with several and supports pillar, described nonreturn valve core is placed at and supports on pillar, between the outer edge of nonreturn valve core bottom and housing boss, leave exhaust passage, exhaust passage is provided with seal washer, between seal washer and guiding collar, be provided with pressure limiting spring, the outer wall of housing is provided with pressure limiting scale, one side on housing top is provided with air vent.
This utility model is simple in structure, easy to use, can facilitate the pressure in regulation and control cuff.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A cutaway view Amplified image of Fig. 1;
Fig. 3 is the B-B cutaway view Amplified image of Fig. 1
Fig. 4 is the structural representation of endotracheal tube.
In figure, 1-endotracheal tube, 2-cuff, 3-pilot balloon, 4-housing, 5-opening, 6-nonreturn valve core, 7-screw thread, 8-nut, 9-guiding collar, 10-passage, 11-gathering sill, the 12-projection that leads, 13-boss, 14-supports pillar, 15-exhaust passage, 16-seal washer, 17-pressure limiting spring, 18-pressure limiting scale, 19-air vent.
The specific embodiment
Referring to Fig. 1-4, this utility model pressure-adjustable type charge valve, include housing 4 and nonreturn valve core 7, the middle part of housing 4 top and bottom is equipped with opening 5, the gas injection port end of described nonreturn valve core 6 stretches out the upper end open of housing 4, the gas outlet end of nonreturn valve core 6 is relative with housing 4 lower ending openings, the outer wall of nonreturn valve core 6 is provided with screw thread 7 and has nut 8, nut 8 belows are fastenedly connected guiding collar 9, on guiding collar 9, have several passages 10, the edge of guiding collar 10 is provided with some gathering sills 11, housing 4 inwalls are provided with several guiding projections 12 of longitudinally arranging, guiding projection 12 matches with the gathering sill 11 on guiding collar 10, the inside edge, bottom of housing 4 is provided with a circle boss 13, the housing bottom of boss 13 inside edges is provided with several and supports pillar 14, the bottom of described nonreturn valve core 6 is placed on to be supported on pillar 14, between the outer edge of nonreturn valve core bottom and housing boss, leave exhaust passage 15, exhaust passage 15 is provided with seal washer 16, between seal washer 16 and guiding collar 10, be provided with pressure limiting spring 17, the outer wall of housing 4 is provided with pressure limiting scale 18, one side on housing 4 tops is provided with air vent 19.Operation principle: this device and the pilot balloon 3 of endotracheal tube 1 are connected, the gas injection port end of rotary check valve core 6, nut 8 on nonreturn valve core 6 is advanced downwards, the guiding collar 10 of nut 8 lower ends is the spring of compacting pressure limiting downwards 17 under 12 guiding of guiding projection, when guiding collar 10 arrives after required setting value, the pressure of pressure limiting spring 17 is delivered on seal washer 16, make like this gas pressure in cuff 2 controlled, when with gas injection device gas injection, while exceeding pressure limiting spring 17 pressure as the pressure in cuff 2, the gas of cuff 2 will backflow and wash seal washer 16 open from air vent 19 these devices of discharge of housing 4 to exhaust passage 15.
Claims (1)
1. pressure-adjustable type charge valve, include housing and nonreturn valve core, the middle part of housing top and bottom is equipped with opening, it is characterized in that: the gas injection port end of described nonreturn valve core stretches out the upper end open of housing, the gas outlet end of nonreturn valve core is relative with housing lower ending opening, the outer wall of nonreturn valve core is provided with screw thread and has nut, nut below is fastenedly connected guiding collar, on guiding collar, have several passages, the edge of guiding collar is provided with some gathering sills, inner walls is provided with several guiding projections of longitudinally arranging, guiding projection matches with the gathering sill on guiding collar, the inside edge, bottom of housing is provided with a circle boss, housing bottom between boss inside edge is provided with several and supports pillar, described nonreturn valve core is placed in and supports on pillar, between the outer edge of nonreturn valve core bottom and housing boss, leave exhaust passage, exhaust passage is provided with seal washer, between seal washer and guiding collar, be provided with pressure limiting spring, the outer wall of housing is provided with pressure limiting scale, one side on housing top is provided with air vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320803299.5U CN203577101U (en) | 2013-12-10 | 2013-12-10 | Pressure regulating type inflation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320803299.5U CN203577101U (en) | 2013-12-10 | 2013-12-10 | Pressure regulating type inflation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203577101U true CN203577101U (en) | 2014-05-07 |
Family
ID=50575083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320803299.5U Expired - Fee Related CN203577101U (en) | 2013-12-10 | 2013-12-10 | Pressure regulating type inflation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203577101U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104027878A (en) * | 2014-05-23 | 2014-09-10 | 成都科创佳思科技有限公司 | Pressure regulating inflation valve |
| CN109395219A (en) * | 2017-08-15 | 2019-03-01 | 深圳市美好创亿医疗科技有限公司 | Gasbag pressure instruction device |
-
2013
- 2013-12-10 CN CN201320803299.5U patent/CN203577101U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104027878A (en) * | 2014-05-23 | 2014-09-10 | 成都科创佳思科技有限公司 | Pressure regulating inflation valve |
| CN104027878B (en) * | 2014-05-23 | 2016-03-02 | 黄东 | Adjust blood pressure charge valve |
| CN109395219A (en) * | 2017-08-15 | 2019-03-01 | 深圳市美好创亿医疗科技有限公司 | Gasbag pressure instruction device |
| CN109395219B (en) * | 2017-08-15 | 2024-05-17 | 深圳市美好创亿医疗科技股份有限公司 | Air bag pressure indicating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20141210 |
|
| EXPY | Termination of patent right or utility model |