CN216908896U - Three-cavity two-bag catheter for measuring and adjusting portal vein pressure and hepatic vein pressure - Google Patents
Three-cavity two-bag catheter for measuring and adjusting portal vein pressure and hepatic vein pressure Download PDFInfo
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- CN216908896U CN216908896U CN202123417152.6U CN202123417152U CN216908896U CN 216908896 U CN216908896 U CN 216908896U CN 202123417152 U CN202123417152 U CN 202123417152U CN 216908896 U CN216908896 U CN 216908896U
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Abstract
The utility model discloses a three-cavity two-balloon catheter for measuring and adjusting portal vein pressure and hepatic vein pressure, wherein a floating balloon and a filling balloon are arranged on a catheter body, and an inlet end of the catheter body is connected with a first tube, a second tube and a third tube, wherein the first tube is communicated with the floating balloon, the second tube is communicated with an outlet end, the third tube is communicated with the filling balloon, valves convenient for controlling the on-off of a pipeline are arranged at the tube openings of the first tube and the third tube, and a positioning mark for ensuring the accurate positioning of the catheter is arranged on the catheter body. The utility model has simple structure and convenient operation, can reduce the operation flow and the radiation time, can be used for measuring the portal vein pressure gradient and the hepatic vein pressure gradient, thereby more effectively guiding the curative effect of transjugular intrahepatic portal shunt operation, and can also adjust the size of the shunt channel according to the reduction degree of the venous pressure so as to improve the patency rate of the shunt channel and further reduce the incidence rate of hepatic encephalopathy.
Description
Technical Field
The utility model relates to the field of medical instruments, in particular to a three-cavity two-sac catheter for measuring and adjusting portal vein pressure and hepatic vein pressure.
Background
Portal hypertension is a common disease and frequently encountered disease in clinic, and transjugular intrahepatic portal vein shunt (TIPS) is a safe and effective minimally invasive means for treating portal hypertension-related complications. The monitoring and adjustment of the portal vein pressure have important significance on the occurrence, treatment and prognosis judgment of portal vein hypertension complications. At present, hepatic venous pressure gradient is mostly adopted to judge portal venous pressure, however, hepatic venous pressure gradient reaction is hepatic sinus pressure, not real portal venous pressure, and measurement results can deviate due to abnormal shunt in the liver. In addition, a measurement catheter entering the hepatic vein may fail to reach the hepatic vein wedge site or reflux occurs after injection of contrast media causing measurement errors.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention aims to provide a three-lumen two-balloon catheter for measuring and adjusting portal and hepatic venous pressures to solve the aforementioned problems in certain medical application scenarios.
The technical scheme adopted by the utility model is as follows:
a three-lumen two-balloon catheter for measuring and adjusting portal and hepatic venous pressures, comprising: the catheter comprises a catheter body, wherein a floating balloon and a filling balloon are arranged on the catheter body, and the floating balloon is closer to the outlet end of the catheter body than the filling balloon;
a first tube, a second tube and a third tube are respectively connected to the inlet end of the catheter body, wherein the first tube is communicated with the floating balloon, the second tube is communicated with the outlet end, and the third tube is communicated with the filling balloon;
valves are arranged at the pipe orifices of the first pipe and the third pipe; and a positioning mark is arranged on the catheter body and is positioned between the floating balloon and the outlet end.
In at least one possible implementation manner, distinguishing marks for identifying the first pipe, the second pipe and the third pipe are respectively arranged on the pipe bodies of the first pipe, the second pipe and the third pipe.
In at least one possible implementation manner, the distinguishing mark comprises tubes with different colors.
In at least one possible implementation manner, the distinguishing mark includes a word mark or a color mark arranged on the tube body.
In at least one possible implementation thereof, the positioning mark has an annular region.
In at least one possible implementation, the positioning mark is made of a material which is opaque to X-rays.
In at least one possible implementation manner, the valve is a three-way valve.
In at least one possible implementation manner, the pipe diameter of the conduit body is 1.8 mm-2 mm.
In at least one possible implementation thereof, the diameter of the buoyant balloon in the inflated state is between 11mm and 13 mm.
In at least one possible implementation, the inflated balloon has a diameter of 8mm to 10mm in the inflated state.
The main design concept of the utility model is that a floating balloon and a filling balloon are arranged on a catheter body, a first tube, a second tube and a third tube are respectively connected with the inlet end of the catheter body, wherein the first tube is communicated with the floating balloon, the second tube is communicated with the outlet end, the third tube is communicated with the filling balloon, valves which are convenient for controlling the on-off of a pipeline are arranged at the tube openings of the first tube and the third tube, and a positioning mark for ensuring the accurate positioning of the catheter is arranged on the catheter body. The utility model has simple structure and convenient operation, can reduce the operation flow and the radiation time, can be used for measuring the portal vein pressure gradient and the hepatic vein pressure gradient, thereby being capable of more effectively guiding the curative effect of transjugular intrahepatic portal shunt operation, and adjusting the size of the shunt according to the reduction degree of the vein pressure so as to improve the patency rate of the shunt and further reduce the incidence rate of hepatic encephalopathy.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a three-lumen two-balloon catheter for measuring and adjusting portal vein pressure and hepatic vein pressure according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the utility model.
The utility model provides an embodiment of a three-cavity two-sac catheter for measuring and adjusting portal vein pressure and hepatic vein pressure, in particular, as shown in figure 1, the three-cavity two-sac catheter comprises: the catheter comprises a catheter body 0, wherein a floating balloon 1 and a filling balloon 2 are arranged on the catheter body 0, and the floating balloon 1 is closer to the outlet end of the catheter body 0 than the filling balloon 2;
a first tube 3, a second tube 4 and a third tube 5 are respectively connected to the inlet end of the catheter body 0, wherein the first tube 3 is communicated with the floating balloon 1, the second tube 4 is communicated with the outlet end, and the third tube 5 is communicated with the filling balloon 2;
It is understood that three of the three lumens and two of the three lumens are referred to as three lumens, and the two lumens are referred to as a floating balloon and a filling balloon. For convenience of practical use, in other preferred embodiments of the present invention, it is contemplated to independently provide the catheter body 0, the first tube 3, the second tube 4 and the third tube 5 with an elongation mechanism, such as but not limited to, a flexible and/or bendable corrugated section on the tube body of the second tube 4.
Further, the first tube 3, the second tube 4, and the third tube 5 are provided with distinguishing marks for identifying the three tubes, respectively.
Further, the distinguishing mark comprises tube bodies of different colors.
Further, the distinguishing mark comprises a word mark or a color mark arranged on the pipe body.
Further, the positioning mark 7 has a ring-shaped region.
Furthermore, the positioning mark 7 is made of a material which is opaque to X-rays. The positioning mark 7 may be provided, for example, with a metal collar, or a paint containing a metal component.
Furthermore, the valve is preferably a three-way valve, so that three ways can be selectively connected with the catheter, the pressure sensor, the syringe, the pressure pump and other components, and the operation and the use are convenient.
Further, the catheter body 0 has a tube diameter of 1.8mm to 2mm, preferably, 5.5F to 1.83mm or 6F to 2mm (1F to 3mm), because the existing catheter applied in other medical scenes is mainly 16F (5.3mm), but limited by human anatomy, and the 16F catheter is not suitable for measuring and adjusting portal vein pressure, so that the pertinence of the specific tube diameter size of the present invention is emphasized here.
Further, the diameter of the floating balloon 1 in the inflated state is generally 11mm to 13 mm.
Further, the diameter of the inflated balloon 2 in the inflated state is typically 8mm to 10 mm.
Both of the above points are emphasized that the product embodiments proposed by the present invention cannot be replaced by existing catheter products due to the human anatomy and product characteristics.
The mode of use of the utility model is schematically illustrated below in connection with the various embodiments described above:
1. selecting the floating balloon 1 to be in the inferior vena cava under fluoroscopy (the position of the catheter can be positioned by the positioning mark 7 in the operation), and connecting a pressure sensor to the orifice of the second tube 4 to measure the pressure of the inferior vena cava; the filling balloon 2 is selected to be in a transjugular intrahepatic portal body shunt (in an unfilled state) under fluoroscopy, the floating balloon 1 is positioned in a portal vein trunk, the orifice of the second tube 4 is connected with a pressure sensor, the portal vein pressure after the TIPS operation is measured, and the portal vein pressure gradient after the TIPS operation (portal vein pressure-lower cavity vein pressure after the TIPS operation) is calculated.
2. Injecting contrast agent into the mouth of the third tube 5 to expand the filling balloon 2 so as to fully block the blood flow of the shunt channel, closing the valve of the third tube 5 to prevent the contrast agent of the filling balloon 2 from retracting due to reflux, then slowly injecting contrast agent through the mouth of the second tube 4 to perform portal vein angiography examination, connecting a pressure sensor to the mouth of the second tube 4, measuring the portal vein pressure before TIPS operation, and calculating the portal vein pressure gradient before TIPS operation (portal vein pressure before TIPS operation-lower cavity vein pressure).
3. Confirming the decompression degree according to the pressure gradient of the portal vein before and after the TIPS operation, and if the decompression degree is lower than a set value, connecting a pressure pump through a third pipe 5 to continue expanding the shunt; if the degree of depressurization is higher than the set value, a small-sized stent may be alternatively used to assist in reducing the flow split.
4. When the hepatic vein pressure gradient is measured, the floating balloon 1 is selected to the hepatic vein under fluoroscopy, and the opening of the second tube 4 is connected with a pressure sensor to measure the hepatic vein free pressure at a position 2-4 cm away from the inferior vena cava; injecting contrast agent into the first tube 3 to expand the floating balloon 1 so as to fully block hepatic vein blood flow, closing a valve at the opening of the first tube 3 to ensure that no contrast agent flows back to cause the floating balloon 1 to retract, slowly injecting contrast agent through the second tube 4 to perform hepatic vein contrast examination, connecting a pressure sensor with the opening of the second tube 4 to measure hepatic vein wedging pressure, and calculating hepatic vein pressure gradient.
In summary, the main design concept of the present invention is that the floating balloon and the filling balloon are disposed on the catheter body, and the inlet end of the catheter body is connected to the first tube, the second tube and the third tube, respectively, wherein the first tube is communicated with the floating balloon, the second tube is communicated with the outlet end, the third tube is communicated with the filling balloon, the ports of the first tube and the third tube are both provided with valves for controlling the on-off of the pipeline, and the catheter body is provided with positioning marks for ensuring the accurate positioning of the catheter. The utility model has simple structure and convenient operation, can reduce the operation flow and the radiation time, can be used for measuring the portal vein pressure gradient and the hepatic vein pressure gradient, thereby being capable of more effectively guiding the curative effect of transjugular intrahepatic portal shunt operation, and adjusting the size of the shunt according to the reduction degree of the vein pressure so as to improve the patency rate of the shunt and further reduce the incidence rate of hepatic encephalopathy.
In the embodiments of the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
The structure, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the above embodiments are merely preferred embodiments of the present invention, and it should be understood that technical features related to the above embodiments and preferred modes thereof can be reasonably combined and configured into various equivalent schemes by those skilled in the art without departing from and changing the design idea and technical effects of the present invention; therefore, the utility model is not limited to the embodiments shown in the drawings, and all the modifications and equivalent embodiments that can be made according to the idea of the utility model are within the scope of the utility model as long as they are not beyond the spirit of the description and the drawings.
Claims (10)
1. A three-lumen two-balloon catheter for measuring and adjusting portal and hepatic venous pressures, comprising: the catheter comprises a catheter body, wherein a floating balloon and a filling balloon are arranged on the catheter body, and the floating balloon is closer to the outlet end of the catheter body than the filling balloon;
a first tube, a second tube and a third tube are respectively connected to the inlet end of the catheter body, wherein the first tube is communicated with the floating balloon, the second tube is communicated with the outlet end, and the third tube is communicated with the filling balloon;
valves are arranged at the pipe orifices of the first pipe and the third pipe; and a positioning mark is arranged on the catheter body and is positioned between the floating balloon and the outlet end.
2. The three-lumen two-balloon catheter for measuring and adjusting portal vein pressure and hepatic vein pressure according to claim 1, wherein distinguishing marks for identifying the first tube, the second tube and the third tube are respectively provided on the tube bodies of the first tube, the second tube and the third tube.
3. The three-lumen two-balloon catheter for measuring and adjusting portal and hepatic venous pressures of claim 2, wherein the differentiating indicia comprises tubes of different colors.
4. The three-lumen two-balloon catheter for measuring and adjusting portal and hepatic venous pressures of claim 2, wherein the differentiating indicia comprises a word or color marking disposed on the tube.
5. The three-lumen two-balloon catheter for measuring and adjusting portal and hepatic venous pressures of claim 1, wherein the positioning markers have annular regions.
6. The three-lumen two-balloon catheter for measuring and adjusting portal and hepatic venous pressures of claim 1, wherein the positioning markers are radiopaque material.
7. The three-lumen two-balloon catheter for measuring and adjusting portal and hepatic venous pressures of claim 1, wherein the valve is a three-way valve.
8. The three-cavity two-sac catheter for measuring and adjusting portal vein pressure and hepatic vein pressure according to any one of claims 1 to 7, wherein the diameter of the catheter body is 1.8mm to 2 mm.
9. The triple lumen, double balloon catheter for measuring and adjusting portal and hepatic venous pressures of any of claims 1 to 7, wherein the diameter of the floating balloon in the inflated state is between 11mm and 13 mm.
10. The triple lumen, double balloon catheter for measuring and adjusting portal and hepatic venous pressures of any of claims 1 to 7, wherein the inflated balloon has a diameter of 8mm to 10mm in the inflated state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123417152.6U CN216908896U (en) | 2021-12-31 | 2021-12-31 | Three-cavity two-bag catheter for measuring and adjusting portal vein pressure and hepatic vein pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123417152.6U CN216908896U (en) | 2021-12-31 | 2021-12-31 | Three-cavity two-bag catheter for measuring and adjusting portal vein pressure and hepatic vein pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216908896U true CN216908896U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123417152.6U Active CN216908896U (en) | 2021-12-31 | 2021-12-31 | Three-cavity two-bag catheter for measuring and adjusting portal vein pressure and hepatic vein pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216908896U (en) |
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2021
- 2021-12-31 CN CN202123417152.6U patent/CN216908896U/en active Active
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