CN201510280U - Pressure difference measuring instrument for portal-body venous systems - Google Patents
Pressure difference measuring instrument for portal-body venous systems Download PDFInfo
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- CN201510280U CN201510280U CN2009200733882U CN200920073388U CN201510280U CN 201510280 U CN201510280 U CN 201510280U CN 2009200733882 U CN2009200733882 U CN 2009200733882U CN 200920073388 U CN200920073388 U CN 200920073388U CN 201510280 U CN201510280 U CN 201510280U
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- single lumen
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Abstract
The utility model belongs to the field of medical appliances, relates to a pressure difference measuring instrument for portal-body venous systems, which is used during a hepatobiliary surgery. The pressure difference of the portal-body venous systems is usually needed to be measured during the hepatobiliary surgery, but the special clinical pressure difference measuring instrument for the portal-body venous systems does not exist at present, the utility model adopts two single lumen catheters which have the same caliber and use a common calibrated scale to be respectively connected with the portal vein and the body vein, wherein a stay cord is arranged at the head part of the single lumen catheter, a gravity cone is arranged at the lower end thereof, and the two catheters can be kept in a vertical state by being hung on an infusion support or directly lifted by hand. In the vertical state, the difference of the liquid levels in the left and the right single lumen catheters is just the pressure difference of the portal-body venous systems. The utility model can not only measure the pressure of the portal venous system but also the pressure of the body venous system simultaneously, meanwhile, the reading is accurate, and the repeatability is good. The utility model has easy machining and manufacturing, low cost, strong practicability and wide market prospect.
Description
Technical field
This utility model relates to technical field of medical instruments, is the measuring instrument that is used for door-vena systemica system pressure difference in a kind of hepatobiliary surgery.
Background technology
Clinically, hepatobiliary surgery is particularly with often needing to measure the unify pressure of vena systemica system of portal system in the operation of patients with portal hypertension, and the clinical meaning of pressure differential of in fact measuring both is bigger, can reflect the practical situation of liver perfusion more.But lack the measuring instrument that is specifically designed to door-vena systemica system pressure difference at present clinically, use internal diameter diameter 1.5mm often in the art, external diameter diameter 6mm, two glass single lumen catheters of long 20cm connect into the glass single lumen catheter of 40cm and measure pylic pressure.During use, place outside the otch omentum majus is smooth, under no tension force situation, select the outer genus of right gastroepiploic vein bow to prop up puncture, fill with water for injection and deflated glass single lumen catheter with what conduit connected long 40cm from the bottom, measurement from the right atrium level to the glass single lumen catheter in water-column, be portal venous pressure.The defective of former measuring method is: 1. when measuring in theory baseline should be the right atrium level, but the position of right atrium is estimated during practical operation, for easy and simple to handle, general 0 scale place with the glass single lumen catheter is positioned on the horizontal position patient stomach wall in the operation, because the distance of each patient from stomach wall to the right atrium level is different, cause each baseline of measuring just inconsistent, poor repeatability; 2. bare glass water column type scale portal vein pressure-measuring pipe can not guarantee to be in plumbness, so reading is inaccurate when causing measuring; 3. simple portal venous pressure is influenced by several factors, and only measured individual data, and door-vena systemica system pressure difference measuring instrument can measure portal venous pressure, vena systemica system pressure simultaneously and both is poor, the actual pressure condition that has reflected the preceding regulating liver-QI posterior vein system of liver of both differences has more clinical meaning than simple measurement of portovenous pressure.
Summary of the invention
The inventor is the deficiency that individual data is forbidden, only measured to the former portal vein pressure testing method poor repeatability of solution, reading, has invented a kind of door-vena systemica system pressure difference measuring instrument.
The present invention solves its technical problem by following technical proposal: two conduits that connect portal vein and vena systemica respectively adopt identical material, the upper end communicates with atmosphere, identical and the public rule of caliber is beneficial to the baseline unanimity of two pipes, and accuracy of reading is reliable.Head has stay cord, and there is the gravity circular cone lower end, hangs over drip stand or directly uses portablely, can make two single lumen catheters guarantee plumbness, guarantees accuracy of reading.About under plumbness in two single lumen catheters the difference of liquid level be door-vena systemica system pressure difference.
Description of drawings
Accompanying drawing is an organigram of the present utility model.
Among the figure: 1. be used to connect the left side catheter adapter of syringe, 2. be used to connect the right side catheter adapter of syringe, 3. link up with, 4. left side single lumen catheter, 5. right side single lumen catheter, 6. rule, 7. lower end stay cord, 8. the gravity circular cone 9. is used to connect the catheter adapter of pylic left side, 10. is used for the right side catheter adapter of connector venous.
The utility model upper end 1,2 and lower end 9,10 are long 10cm, external diameter 0.6cm, the pipe joint of internal diameter 0.5cm. Upper end drag hook 3 length overall 10cm. Conduit 4 and 5 is long 60cm all, external diameter diameter 6mm, and internal diameter diameter 1.5mm, central authorities are rule 6. 7 for the flexible lines of long 5cm. The diameter 4cm of gravity circular cone 8, high 5cm is connected on conduit 4 and 5 by flexible lines 7.
The utility model is simple in structure, and is easy to use, can solve effectively that former measurement is inaccurate, poor repeatability and measurement data Single-issue, can improve the accuracy of measurement.
Below in conjunction with drawings and Examples the utility model is further specified.
The specific embodiment
Reach specific embodiment in conjunction with the accompanying drawings and describe this utility model in detail.
As shown in the figure, this utility model is a kind of door-vena systemica system pressure difference measuring instrument.During use, by the operation routine operation, earlier with syringe connecting duct joint 1 and 2, inject the water for injection aerofluxus in the conductive pipe 4 and 5, then catheter adapter 9 is connected portal vein and vena systemica respectively with 10, again stay cord 3 is hung over drip stand or directly use portable, as far as possible that baseline " 0 " scale of rule 6 is consistent with patient's right atrium level as far as possible, 8 one-tenth nature plumbness of the gravity circular cone of lower end, the difference of liquid level is door-vena systemica system pressure difference in two single lumen catheters 4 and 5 under plumbness.Even baseline " 0 " scale can not be consistent with the right atrium level also only can influence the reading of portal vein and vena systemica pressure respectively, but to both difference promptly door-vena systemica system pressure difference do not have influence.
The foregoing description is a most preferred embodiment of the present utility model, and this embodiment can measure the poor of portal venous pressure, vena systemica system pressure and both simultaneously, has guaranteed the accurate and repeatable of numerical value again.Present embodiment is not that this utility model is done any type of restriction, and all any simple change, equivalent variations and modifications of the foregoing description being made according to technical spirit of the present utility model all belong to category of the present utility model.
Claims (2)
1. the instrument of human body portal vein and vena systemica system pressure difference measurements, it is characterized in that: connect two single lumen catheters that adopt identical material of portal vein and vena systemica respectively, the upper end communicates with atmosphere, the identical and shared rule of caliber.
2. door-vena systemica system pressure difference measuring instrument as claimed in claim 1, its feature also is: on stay cord is arranged, there is the gravity circular cone lower end, makes two single lumen catheters all be in plumbness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200733882U CN201510280U (en) | 2009-06-04 | 2009-06-04 | Pressure difference measuring instrument for portal-body venous systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200733882U CN201510280U (en) | 2009-06-04 | 2009-06-04 | Pressure difference measuring instrument for portal-body venous systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201510280U true CN201510280U (en) | 2010-06-23 |
Family
ID=42481675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200733882U Expired - Fee Related CN201510280U (en) | 2009-06-04 | 2009-06-04 | Pressure difference measuring instrument for portal-body venous systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201510280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104856724A (en) * | 2014-02-25 | 2015-08-26 | 首都医科大学附属北京佑安医院 | Direct pressure measurement device |
-
2009
- 2009-06-04 CN CN2009200733882U patent/CN201510280U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104856724A (en) * | 2014-02-25 | 2015-08-26 | 首都医科大学附属北京佑安医院 | Direct pressure measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20140604 |