CN219208381U - Pressure relief device for extracorporeal circulation suction tube - Google Patents
Pressure relief device for extracorporeal circulation suction tube Download PDFInfo
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- CN219208381U CN219208381U CN202222182324.4U CN202222182324U CN219208381U CN 219208381 U CN219208381 U CN 219208381U CN 202222182324 U CN202222182324 U CN 202222182324U CN 219208381 U CN219208381 U CN 219208381U
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Abstract
The utility model relates to the technical field of medical appliances and discloses an extracorporeal circulation suction tube pressure relief device which comprises a connector, a connecting pipeline and a pressure relief valve, wherein one end of the connecting pipeline is connected with the connector, the other end of the connecting pipeline is connected with the pressure relief valve, the pressure relief valve comprises a shell and a valve core, the valve core comprises a flange matched with the shell in a blocking way from inside to outside and a flexible valve clack connected with the flange, the flexible valve clack is arranged on the outer side of the flange, and the flexible valve clack has an elastic closed state and an elastic opened working state when being subjected to pressure from inside to outside. When negative pressure appears in the left atrium or the left ventricle, the flexible valve clack is closed, the valve core moves inwards integrally, and the valve core keeps closed after pressure is discharged, so that the suction pipeline is guaranteed to be not sucked and closed, suction and decompression can be continuously carried out, pressure relief treatment is automatically carried out on the pipeline, the pipeline is guaranteed to rebound automatically, the negative pressure suction and closing are relieved, the position of an intubation tube is not required to be adjusted for many times by surgery, and smooth operation progress is guaranteed.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to an extracorporeal circulation suction tube pressure relief device.
Background
The extracorporeal circulation is life support technology for draining the blood of the heart-returning vein to the outside of the body by using a series of special artificial devices, and outputting the blood back to an arterial system in the body after gas exchange, temperature regulation and filtration by an artificial method. The in-vitro circulation needs to perform intra-operative suction, including left heart suction, right heart suction and/or second suction, wherein the left heart suction or left heart decompression is one of the very important contents of clinical in-vitro circulation work, and a surgeon is required to be matched with an in-vitro circulation perfusionist to achieve a better clinical effect through full communication.
At present, the conventional suction mode in operation is to use a left heart suction tube which is suitable for the weight of a patient to be connected with a left pipeline pressure pump for adjustment and then perform suction and decompression. The pump is adjusted at the during operation, and the roll extrusion pump needs certain rate of tension, and the perfusion engineer can carry out fine adjustment to the roll extrusion pump before opening the extracorporeal circulation, ensures that the pump has certain oppression to left side pipeline in the art, produces negative pressure to left side pipeline inside when the pump rotates to in the backward flow blood that makes patient left heart system returns to the extracorporeal circulation blood storage jar after the roll extrusion of pump. If the left heart suction effect is not good in heart operation, besides the fact that a clean operation visual field cannot be provided, the operation progress of a surgeon is influenced, the effect of protecting the operation center muscles is also influenced, for example, the left heart is locally expanded, the myocardial cooling is not definite, and further, the heart is difficult to recover and the myocardial is inhibited, and even the serious patient needs mechanical circulation assistance after operation because of difficult shutdown.
In the prior extracorporeal circulation operation, a left heart suction tube is placed in a left room or a left room, negative pressure suction and closure often occur in the operation, after the extracorporeal circulation perfusionist and a surgeon communicate the left heart suction and closure, the surgeon adjusts the position of a left heart drainage tube or punctures a small-size scalp needle on the left heart tube, and then the left heart is depressurized again, so that the smooth operation is influenced.
Disclosure of Invention
The purpose of the utility model is that: the utility model provides an extracorporeal circulation suction tube pressure relief device, which aims at solving the problems that after the left heart is sucked and closed in the extracorporeal circulation operation in the prior art, the position of a left heart drainage tube is adjusted or a scalp needle is punctured, and the smooth operation is affected.
In order to achieve the above purpose, the utility model provides an extracorporeal circulation suction tube pressure relief device, which comprises a connector, a connecting pipeline and a pressure relief valve, wherein the connector is used for being connected with a left heart suction pipeline, a side nozzle is further arranged on the connector, one end of the connecting pipeline is connected with the side nozzle, the other end of the connecting pipeline is connected with the pressure relief valve, the pressure relief valve comprises a shell and a valve core arranged in the shell, one side of the shell, which is close to the connector, is defined as the inner side, the valve core comprises a flange matched with the shell in a blocking way from inside to outside, and a flexible valve clack connected with the flange, and the flexible valve clack is arranged on the outer side of the flange and has a closed state of elastic closing and a working state of elastic opening when being subjected to pressure from inside to outside.
Preferably, the flexible valve clacks have two groups, and the two groups of flexible valve clacks form conical surface structures which gradually decrease from inside to outside when in a closed state.
Preferably, an annular baffle is arranged in the shell, the flange is of an annular structure, the flange is assembled with the baffle in a blocking way, and the flexible valve clack and the flange are positioned on two sides of the baffle.
Preferably, the pressure release valve further comprises a pressure barrier for containing liquid passing through the pressure release valve, wherein the pressure release valve is provided with a connector communicated with the flexible valve clack, and the pressure barrier is communicated with the connector.
Preferably, the pressure barrier comprises a connection pipe connected to the pressure release valve and an elastic bladder connected to the connection pipe.
Preferably, the pressure release valve further comprises a three-way joint, and the connecting pipeline is communicated with the pressure release valve through the three-way joint.
Preferably, the pressure measuring device further comprises a pressure measuring tube for connecting with a pressure detecting device, and the pressure measuring tube is used for connecting with the three-way joint or the pressure barrier.
Preferably, the side nozzle is connected with the connecting pipeline, and the connecting pipeline is connected with the pressure release valve through a luer connector.
Compared with the prior art, the extracorporeal circulation suction tube pressure relief device has the beneficial effects that: when in extracorporeal circulation operation, the connector can be connected into the existing left heart suction pipeline, and the connector is connected with the pressure release valve through the side mouth and the connecting pipeline, when positive pressure occurs in the left atrium or the left ventricle, the flange and the shell are blocked in a one-way from inside to outside, the pressure acts on the flexible valve clack to enable the flexible valve clack to be elastically opened, and the flexible valve clack is in a working state to release the pressure; when negative pressure appears in the left atrium or the left ventricle, the flexible valve clack is closed, the valve core integrally moves inwards, the pressure release valve is opened to release the negative pressure, and the valve is continuously kept closed after the pressure is released, so that the suction pipeline is ensured not to be sucked and closed, and suction and decompression can be continuously carried out, so that the pipeline can be automatically subjected to pressure relief treatment when the left atrium sucks and closes, the pipeline is ensured to automatically rebound, the suction and closing of the negative pressure are relieved, the surgical operation process is ensured to be smoothly carried out without regulating the cannula position for many times.
Drawings
FIG. 1 is a schematic view of the structure of the extracorporeal circulation suction tube pressure relief device of the present utility model;
FIG. 2 is a cross-sectional view of a pressure relief valve of the extracorporeal circulation suction tube pressure relief device of FIG. 1;
fig. 3 is a schematic view of the structure of the pressure barrier and the pressure measuring tube of the extracorporeal circulation suction tube pressure relief device of the present utility model.
In the figure, 1, a connector; 11. a side nozzle; 2. a connecting pipeline; 3. a pressure relief valve; 31. a housing; 311. a baffle; 32. a valve core; 321. a flange; 322. a flexible flap; 4. a pressure barrier; 41. a connecting pipe; 42. an elastic bag; 5. a three-way joint; 6. and (5) measuring the pressure of the pipe.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
In a preferred embodiment of the extracorporeal circulation suction tube pressure relief device of the present utility model, as shown in fig. 1 to 3, the extracorporeal circulation suction tube pressure relief device includes a connector 1, a connecting pipeline 2 and a pressure relief valve 3, wherein the connector 1, the connecting pipeline 2 and the pressure relief valve 3 all meet medical requirements. The extracorporeal circulation suction tube pressure relief device is used for being connected to an existing extracorporeal circulation left heart suction tube and is additionally arranged at a position in front of a rolling pump.
The connector 1 is used for being connected in the left heart suction pipeline of the prior art, the connector 1 is of a two-way structure, the two ends of the axial direction of the connector 1 are provided with connectors, the connector can be reserved on the left heart suction pipeline in advance, and the connector 1 can be connected at the sheared position after disinfection by using sterile scissors at the proper position of the left heart suction pipeline at the front section of the rolling pump.
The connector 1 is also provided with a side nozzle 11, the side nozzle 11 is provided with a luer street, one end of the connecting pipeline 2 is in threaded connection with the side nozzle 11, and the other end of the connecting pipeline is in threaded connection with the pressure release valve 3. In the embodiment, the connecting pipeline 2 is a hose, is convenient for bending connection, has the length of 20cm and the diameter of 1/8 inch, is made of PVC, and has one end of the connecting pipeline 2 as an outer conical joint and the other end as an inner conical joint.
The pressure release valve 3 comprises a shell 31 and a valve core 32, wherein the shell 31 is made of PVC, and the valve core 32 is arranged in the shell 31 and is used for pressure relief. The side of the housing 31, which defines the valve core 32, close to the connector 1 is the inner side, and the side of the housing 31, which is far away from the connector 1 is the outer side, the valve core 32 comprises a flange 321 and a flexible valve clack 322, and the flange 321 is in one-way stop fit with the housing 31 from inside to outside, so that the valve core 32 can only move from outside to inside.
The flexible flap 322 is disposed on the outer side of the flange 321, and the flexible flap 322 has elasticity, and the flexible flap 322 has a closed state of being elastically closed and an operating state of being elastically opened when being subjected to pressure from inside to outside. When positive pressure occurs in the left atrium or the left ventricle, the flange 321 and the shell 31 are blocked in a one-way from inside to outside, and the pressure acts on the flexible valve clack 322 to enable the flexible valve clack 322 to be elastically opened, so that the flexible valve clack 322 is in a working state to release the pressure, and the flexible valve clack 322 is kept closed after the pressure is relieved; when negative pressure occurs in the left atrium or left ventricle, the flexible flap 322 is closed, the valve spool 32 moves inward as a whole, and the pressure release valve 3 is opened to release the negative pressure, and the flexible flap 322 is in a closed state.
In the present embodiment, the operating pressure of the pressure release valve 3 is-100 to +5mmHg, the inside-out pressure in the pressure release valve 3 is positive pressure, and the outside-in pressure is negative pressure. When the positive pressure exceeds 5mmHg, the flexible valve clack 322 is elastically opened under pressure to be in an operating state, and the positive pressure is released; when the negative pressure is lower than-100 mmHg, the flange 321 of the pressure release valve 3 moves inwards to start releasing the negative pressure, and after the pressure is released, the flange 321 moves outwards to keep being blocked by the shell 31 and keeps being closed, so that the suction pipeline is ensured not to be closed, and suction and decompression can be continued.
The external circulation suction tube pressure relief device can automatically relieve pressure on a pipeline when the left heart sucks negative pressure to suck and close through the pressure relief valve 3, ensure that the pipeline automatically rebounds, relieve the negative pressure to suck and close, avoid the need of surgery to adjust the position of the intubation for many times, and ensure the smooth operation progress.
Preferably, the flexible flaps 322 have two sets, and the two sets of flexible flaps 322 form a tapered surface structure that tapers from the inside to the outside when in the closed state.
The flexible valve clacks 322 are two groups, and the two groups of flexible valve clacks 322 are mutually attached, so that the structure is simple; when negative pressure is generated in the suction pipeline, external pressure acts on the conical surface, so that the flexible valve clacks 322 are tightly attached, the tightness is better, and the valve core 32 is driven to move from right to left for pressure relief.
Preferably, an annular baffle 311 is arranged in the shell 31, the flange 321 is of an annular structure, the flange 321 is assembled with the baffle 311 in a blocking way, and the flexible valve clack 322 and the flange 321 are positioned on two sides of the baffle 311.
The baffle 311 and the flange 321 are of annular structures, and the valve core 32 is in annular contact with the housing 31, so that the tightness between the valve core 32 and the housing 31 is improved. The flexible valve flap 322 and the flange 321 are positioned on two sides of the baffle table 311, so that the valve core 32 can automatically release pressure.
Preferably, the pressure release valve further comprises a pressure barrier 4 for containing liquid passing through the pressure release valve 3, the pressure release valve 3 is provided with a port communicated with the flexible valve clack 322, and the pressure barrier 4 is communicated with the port.
The pressure barrier 4 and the pressure release valve 3 are connected through an interface, when the left atrium suction pipeline generates positive pressure, a small amount of blood can enter the pressure barrier 4 through the flexible valve clack 322 of the pressure release valve 3, the pressure barrier 4 is used for containing blood and plays a role in blocking pressure, and at the moment, the left atrium suction force is increased by temporarily increasing the rotating speed of the rolling pump, so that the blood can be sucked into the suction pipeline again.
Preferably, the pressure barrier 4 includes a connection pipe 41 connected to the pressure release valve 3 and an elastic bladder 42 connected to the connection pipe 41.
The elastic bag 42 is arranged on the connecting pipeline 41, blood enters the elastic bag 42 through the connecting pipeline 41, the elastic bag 42 can be elastically increased to increase the capacity when the pressure is larger, and can be elastically contracted after the pressure is reduced, so that the blood is pumped into the suction pipeline again.
Preferably, the pressure release valve further comprises a three-way joint 5, and the connecting pipeline 2 is communicated with the pressure release valve 3 through the three-way joint 5.
The three-way joint 5 can provide a plurality of interfaces for connecting equipment such as a pressure sensor and the like, and has strong functionality.
Preferably, a pressure measuring tube 6 for connection to a pressure detecting device is also included, the pressure measuring tube 6 being adapted for connection to the three-way connection 5 or the pressure barrier 4.
After the pressure measuring tube 6 is connected with the pressure detection equipment, an operator can continuously and dynamically monitor the pressure of the left heart pipeline, so that a perfusionist is scientifically and objectively guided by numerical values, the size of the left heart suction pump is properly increased or decreased, and the continuous normal work of left heart suction is ensured.
In this embodiment, the pressure measuring tube 6 is connected with the elastic bag 42 of the pressure barrier 4, and the elastic bag 42 will squeeze the volume in the pressure measuring tube 6 after being pressurized, so that the air pressure in the pressure measuring tube 6 changes, and the pressure value is convenient to obtain.
Preferably, the side nozzle 11 is connected to the connecting line 2, and the connecting line 2 and the pressure release valve 3 are all connected by luer connectors.
In the embodiment, the middle side mouth of the connector 1 is provided with a luer connector, one end of the connecting pipeline 2 is provided with a 6% (luer) outer conical connector, the other end of the connecting pipeline 2 is provided with a 6% (luer) inner conical connector, two ends of the pressure release valve 3 are provided with 6% (luer) outer conical connectors, and the luer connectors are medical standard connectors, so that the connector is convenient to connect with the existing suction pipeline and various devices.
In summary, the embodiment of the utility model provides an extracorporeal circulation suction tube pressure relief device, when extracorporeal circulation operation is performed, a connector can be connected into an existing left heart suction pipeline, meanwhile, the connector is connected with a pressure relief valve through a side nozzle and a connecting pipeline, when positive pressure occurs in a left atrium or a left ventricle, as a flange and a shell are blocked from inside to outside in a one-way manner, the pressure acts on a flexible valve clack to enable the flexible valve clack to be elastically opened, and the flexible valve clack is in a working state to release the pressure; when negative pressure appears in the left atrium or the left ventricle, the flexible valve clack is closed, the valve core integrally moves inwards, the pressure release valve is opened to release the negative pressure, and the valve is continuously kept closed after the pressure is released, so that the suction pipeline is ensured not to be sucked and closed, and suction and decompression can be continuously carried out, so that the pipeline can be automatically subjected to pressure relief treatment when the left atrium sucks and closes, the pipeline is ensured to automatically rebound, the suction and closing of the negative pressure are relieved, the surgical operation process is ensured to be smoothly carried out without regulating the cannula position for many times.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (8)
1. The utility model provides an extracorporeal circulation suction tube pressure relief device, its characterized in that includes connector, connecting line and pressure relief valve, the connector is used for being connected with left heart suction line, still arranged the side mouth on the connector, the one end of connecting line with the side mouth is connected, the other end with the pressure relief valve is connected, the pressure relief valve includes the shell and arranges the case in the shell, it is the inboard to define the shell is close to one side of connector, the case include with the shell from inside to outside keeps the complex edge of a wing and with the flexible valve clack that the edge of a wing is connected, the flexible valve clack is arranged the outside of edge of a wing, the flexible valve clack has the closed state of elasticity closure and receives the operating condition of elasticity opening when inside to outside pressure.
2. The extracorporeal circulation suction tube pressure relief device of claim 1 wherein the flexible valve flaps have two sets that form tapered surface structures that taper from inside to outside when the flexible valve flaps are in a closed condition.
3. The extracorporeal circulation suction tube pressure relief device of claim 2 wherein an annular stop is provided in the housing, the flange is of annular configuration, the flange is assembled with the stop, and the flexible flap and the flange are positioned on either side of the stop.
4. The extracorporeal circuit suction tube pressure relief device of any of claims 1-3, further comprising a pressure barrier for containing liquid passing through the pressure relief valve, the pressure relief valve having a port disposed thereon in communication with the flexible flap, the pressure barrier in communication with the port.
5. The extracorporeal circulation suction tube pressure relief device of claim 4 wherein the pressure barrier comprises a connecting tube connected to the pressure relief valve and an elastic bladder connected to the connecting tube.
6. The extracorporeal circulation suction tube pressure relief device of claim 4, further comprising a three-way connection through which the connecting line communicates with the pressure relief valve.
7. The extracorporeal circulation suction tube pressure relief device of claim 6, further comprising a pressure tube for connection to a pressure detection device, the pressure tube for connection to the three-way connector or the pressure barrier.
8. The extracorporeal circulation suction tube pressure relief device of any of claims 1-3 wherein the side nozzle and the connecting line, the connecting line and the pressure relief valve are all connected by a luer fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222182324.4U CN219208381U (en) | 2022-08-18 | 2022-08-18 | Pressure relief device for extracorporeal circulation suction tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222182324.4U CN219208381U (en) | 2022-08-18 | 2022-08-18 | Pressure relief device for extracorporeal circulation suction tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219208381U true CN219208381U (en) | 2023-06-20 |
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ID=86756607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222182324.4U Active CN219208381U (en) | 2022-08-18 | 2022-08-18 | Pressure relief device for extracorporeal circulation suction tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219208381U (en) |
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2022
- 2022-08-18 CN CN202222182324.4U patent/CN219208381U/en active Active
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