CN116059523A

CN116059523A - Cardiovascular intervention pump catheter

Info

Publication number: CN116059523A
Application number: CN202111279763.0A
Authority: CN
Inventors: 胡盛寿; 柳光茂
Original assignee: Fuwai Hospital of CAMS and PUMC
Current assignee: Fuwai Hospital of CAMS and PUMC
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2023-05-05

Abstract

The invention discloses a cardiovascular intervention pump catheter, which comprises a catheter wall with a multi-layer composite structure and an inner cavity with a plurality of cavities, wherein the cavities at least comprise a power supply wire cavity for accommodating a power supply wire, a sensor data wire cavity for accommodating a sensor data wire and a guide wire passing cavity for accommodating a guide wire. The chambers are independent of each other. The pipe wall of the catheter is provided with a composite structure formed by compositing an outer layer, an intermediate layer and an inner layer. The middle layer is a stainless steel winding spring. And a quick connector for plugging and unplugging the circuit from the cavity is arranged outside one end of the conduit. The invention can effectively avoid the problem that the slit generated by a plurality of catheters causes bleeding at the incision. After the heart intervention pump assembly is combined with the quick plug connector, the efficiency of the heart intervention pump assembly in the operation process can be greatly improved, and potential safety hazards caused by improper connection are avoided. Meanwhile, the function of guiding the guide wire in the operation can be better played.

Description

Cardiovascular intervention pump catheter

Technical Field

The invention relates to the technical field of medical appliances, in particular to a cardiovascular intervention pump catheter.

Background

When a cardiovascular interventional pump is placed in the heart, insertion into the body from either the femoral or carotid arteries requires long wires for power and control and other auxiliary functions of the interventional pump. The length of conduit contains power supply, control wires, various sensor data transmission lines and the like for the intervention pump. At present, most of the interventional pump catheters in the market are single-cavity catheters, and only the power supply wires penetrate through the catheters. When the interventional pump also requires other wires, such as sensor data wires, multiple catheters are required to be connected at the root of the interventional pump. This causes problems with bleeding at the incision in the gaps created by multiple catheters during surgery. In operation, a plurality of different wires need to be in one-to-one connection with a controller, and the operation time and the accuracy are also a problem faced by the current similar products.

Disclosure of Invention

The present invention has been made in view of the above-mentioned prior art, and an object of the present invention is to provide a cardiovascular interventional pump catheter, which effectively avoids the problem of bleeding at the incision due to gaps generated by multiple catheters.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

a cardiovascular interventional pump catheter comprising a tube wall having a multi-layer composite structure and an inner lumen having a plurality of lumens including at least a power wire lumen housing a power wire, a sensor data wire lumen housing a sensor data wire, and a guidewire pass-through lumen housing a guidewire.

Further, the plurality of chambers are independent of each other.

Further, the catheter is circular in shape in its radial cross section.

Further, the pipe wall of the catheter is provided with a composite structure formed by compositing an outer layer, an intermediate layer and an inner layer, and the intermediate layer is of a spring structure formed by winding stainless steel wires.

Further, the power supply line cavity is a double-cavity channel for two power supply wires to pass through respectively, and the section shape of the power supply line cavity is that two circles are connected together.

Further, the catheter is provided with a quick connector at one end of the catheter, which is positioned outside the body, the quick connector is provided with a plurality of outlets for a plurality of wires to pass through, and the intervention pump is connected with the catheter through the quick connector.

The invention has the beneficial effects that:

the invention can effectively avoid the problem that the slit generated by a plurality of catheters causes bleeding at the incision. After the heart intervention pump assembly is combined with the quick plug connector, the efficiency of the heart intervention pump assembly in the operation process can be greatly improved, and potential safety hazards caused by improper connection are avoided. Meanwhile, the function of guiding the guide wire in the operation can be better played.

Drawings

FIG. 1 is a schematic view of a cardiovascular interventional pump catheter tube of the present invention in radial cross-section.

Fig. 2 is a schematic cross-sectional view of another cardiovascular interventional pump catheter tube of the present invention in a radial direction.

Fig. 3 is a cross-sectional view of the cardiovascular interventional pump catheter shown in fig. 2 along the extension of the catheter, showing the inner end of the catheter connected to the root of the interventional pump.

Fig. 4 is a cross-sectional view of the cardiovascular interventional pump catheter shown in fig. 2 along the extending direction of the catheter, showing the state that the outer end of the catheter body is connected with a quick connector.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the drawings.

The cardiovascular intervention pump catheter is a multi-cavity intervention pump catheter, which comprises a pipe wall with a multi-layer composite structure and an inner cavity with a plurality of cavities, wherein the cavities at least comprise a power supply wire cavity for containing a power supply wire, a sensor data wire cavity for containing a sensor data wire and a guide wire passing cavity for containing a guide wire, and the cavities are mutually independent. As one implementation mode of the invention, the pipe wall of the catheter is formed by compounding three layers of materials, wherein the outer layer is made of PEBAX 6333; the middle layer is a spring structure formed by winding stainless steel wires (simply called a stainless steel winding spring); the inner layer is made of PTFE. The PEBAX6333 material constituting the outer layer of the tube wall is one of the most commonly used materials for direct contact with blood in the human body at present. The inner cavity wall needs to have a lower friction coefficient when the pipeline and the suction guide wire are inserted, and the friction coefficient of the PTFE material is 0.05 to 0.10, so that PTFE is selected as an inner layer material of the inner cavity wall. The stainless steel winding spring is added between the inner layer material and the outer layer material, so that the elasticity of the catheter can be effectively improved, and a certain strength is provided for the catheter.

The cardiovascular intervention pump catheter of the invention is circular in shape in its radial cross-section, i.e. the outer wall is circular in profile in its radial cross-section, which is advantageous in avoiding or reducing intraoperative incision bleeding problems. As shown in fig. 1, in a cardiovascular interventional pump catheter of the present invention, the lumen has three chambers: a power wire lumen 11, a sensor data wire lumen 12, and a guidewire pass lumen 13. The power supply wire cavity 11 is a main cavity channel, and the size of the inner cavity is determined according to the diameter of the power supply wire; the guide wire passing cavity 13 is a special cavity channel, the size of the guide wire is determined according to the diameter of the guide wire, and the cavity is a special built-in structure; the sensor data wire lumen 12 is an optional functional side lumen, and is directly connected to a catheter from an interventional pump root sensor, and is an optional built-in structure.

In general, the power supply wire cavity is a cavity channel for accommodating two power supply wires, and when the power supply wires penetrate into the catheter, the two power supply wires penetrate simultaneously, so that the power supply wire cavity can be designed into two cavity channels with circular sections according to the appearance of the power supply wires to be connected together, and the two power supply wires are accommodated in the respective cavity channels.

The guide wire passing cavity is of a special structure, and after the guide wire is inserted during operation, the intervention pump is placed at a designated position in the human body along the guide wire passing cavity. When the guide wire is deployed during operation, the guide wire passes through the special guide wire passing cavity, the intervention pump is placed into the specified position from the incision, and when the guide wire is pulled out after the intervention pump reaches the specified position, the guide wire is accommodated in the special guide wire passing cavity and is not in direct contact with a human body, and the guide wire is not in contact with other wires through the smooth inner-layer PTFE structure. In this procedure, all wires, including the guide wire, are contained within the same catheter with a circular cross-section outer wall. The bleeding problem at the incision is effectively avoided, and meanwhile, the influence caused by the relative displacement between the guide wire and the catheter or other leads during the insertion and extraction of the guide wire is avoided.

The sensor data wire lumen is an optional functional side lumen, typically disposed on one side of the power wire lumen. The appearance of sensor data line chamber mainly depends on the material and the shape of sensor data line, provides an independent environment for sensor data transmission. The cross section of the cavity channel of the sensor data line cavity is designed according to the shape of the data line, so that the sensor data line cavity can be tightly attached to the data line, the data line can be better protected, the stability of signals is improved, and the service life of the data line is prolonged. The independent cavity can avoid the possibility of damaging the data wire due to the pulling and inserting of other wires during the installation; the possibility of damaging a data wire due to the insertion and the extraction of a guide wire in an operation is avoided; the device reduces the influence of other wires on the stability and accuracy of data transmission during operation.

One end of a tube body of the cardiovascular intervention pump catheter is directly connected to the root of the intervention pump, and a power supply lead of the intervention pump and a carried sensor data line are directly connected into the catheter. The chance that leads of different materials are contacted with blood is avoided to the maximum extent.

The actual application of the multi-lumen access pump catheter will be described below with respect to an access pump with a fiber optic pressure sensor.

As shown in fig. 2, in the section of the cardiovascular interventional pump catheter provided with the optical fiber pressure sensor, the catheter is circular in shape, so that the tight fit degree with the fixing sheath can be improved, and the bleeding problem at the incision during operation can be effectively avoided.

The power wire lumen 23 serves as a main lumen channel. After other pipeline cavity positions are reserved, the power supply wire cavity is placed at a position relatively centered to the section of the whole catheter, and the shape can be determined together with other functional cavities according to the shape of the wire. Because the power supply wire sheath has certain plasticity during extrusion, the cross-sectional shape of the power supply wire cavity can be slightly changed, so that the whole catheter is more compact.

The fiber lumen 22 of the catheter is one of the optional functional lumens. The pressure sensor uses an optical fiber as a data transmission line. The size of the optical fiber cavity is determined according to the diameter of the data transmission optical fiber, so that the optical fiber is ensured not to be in direct contact with other wires and guide wires, and the optical fiber is protected from being damaged in installation and operation to the greatest extent.

The guide wire passing cavity 21 is a special cavity channel and is independently arranged at one side of the power supply wire cavity 23. The influence on the optical fiber data line when the guide wire is pulled out and inserted in the operation is reduced to the maximum extent.

As shown in fig. 3, the inner end 31 of the multi-lumen access pump catheter body is directly connected to the access pump root 32. The power supply wire 33 led out from the intervention pump root 32 is directly connected into the power supply wire cavity 23 of the catheter from the inner end 31 of the catheter body of the multi-cavity intervention pump, so that the possibility of contact between the power supply wire and blood is avoided, the contact length between the power supply wire 33 and the sensor optical fiber data wire 36 is reduced, and the mutual influence between the power supply wire and the sensor optical fiber data wire is minimized.

An optical fiber pressure sensor 35 is disposed at the access pump root 32 and a sensor optical fiber data line 36 is routed directly into the catheter's optical fiber lumen 22. The whole optical fiber is effectively protected in the independent optical fiber cavity.

The guide wire 34 is inserted through the lumen 21 by the insertion guide wire near the inner end 31 of the catheter body of the multi-lumen interventional pump. The guide wire passing lumen 21 is spaced from the fiber lumen 22 by the power wire lumen 23, maximizing the distance between the guide wire 34 and the sensor fiber optic data line 36 within the catheter.

Referring to fig. 4, the outer portion 41 of the catheter of the multichamber interventional pump includes a fixed end 42 which is connected to the epidermis of the human body and a distal end 43 which is remote from the fixed end 42, and a dedicated multi-outlet quick connect/disconnect connector 47 is connected to the distal end 43 for use, which can seal the distal end of the outer portion of the catheter and provide a quick connect/disconnect connection for various types of lines of the interventional pump.

An outlet for the guide wire 34 is provided near the distal end 43 of the outer portion 41 of the multi-lumen access pump catheter. The guide wire 34 does not pass through the incision solely, so that the bleeding amount of the incision can be effectively reduced, and certain help is provided for the operation.

The power lead 33 is connected to the Lei Mo connector 45 of the multi-port quick connect-disconnect connector 47 via the power lead lumen 23 of the multi-lumen access pump catheter. The rapid plugging characteristic of the Lei Mo connector 45 is utilized to simplify the operation of power supply connection of the interventional pump in operation.

The sensor fiber optic data line 36 is connected to a fiber FC flange 46 of a multi-port quick connect-disconnect connector 47 through the fiber lumen 22 of the multi-lumen access pump catheter. The connection operation of the sensor of the intervention pump in the operation is simplified by utilizing the plugging convenience of the fiber FC flange joint.

In view of the above, it can be seen that the multi-lumen interventional pump catheter of the present invention has the following advantages:

1. a multi-lumen access pump catheter separates the various lines within the catheter by multiple lumens. During the surgical procedure, the guide wire may be inserted through the lumen by a special guide wire in the multi-lumen catheter. Thus, the bleeding amount can be effectively reduced, and the pipelines in other inner cavities of the multi-cavity catheter are not affected.

2. The multi-cavity intervention pump catheter determines the number of inner cavities of the multi-cavity catheter according to the number of the intervention pump guide wires, the power supply wires and the sensor data wires; the corresponding die cavity is designed according to the appearance of different leads, so that the space utilization in the catheter is more compact and reasonable, the possibility of contact between various pipelines and blood and other human tissues can be better isolated, and the possibility of mutual interference between various pipelines is reduced.

3. The multicavity intervention pump catheter is directly connected at the intervention pump root, can effectively avoid the contact of blood in the human body with intervention pump wire, various sensor data lines.

4. According to the type of the pipelines, various pipeline plugging quick-assembling connectors are added at the outer tail end of the catheter body, so that the intervention pump is simpler, faster and safer to use and connect in operation.

Finally, it should be understood that the foregoing description is illustrative of the preferred embodiments of the present invention and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. A cardiovascular interventional pump catheter comprising a tubular wall having a multi-layer composite structure and an inner lumen having a plurality of lumens including at least a power wire lumen containing a power wire, a sensor data wire lumen containing a sensor data wire, and a guidewire pass-through lumen containing a guidewire.

2. The cardiovascular intervention pump catheter of claim 1, wherein the plurality of chambers are independent of each other.

3. The cardiovascular intervention pump catheter of claim 1, wherein the catheter has a circular outer wall cross-sectional profile.

4. The cardiovascular interventional pump catheter of claim 1, wherein the catheter wall has a composite structure of an outer layer, an intermediate layer and an inner layer.

5. The cardiovascular interventional pump catheter of claim 4, wherein the intermediate layer is a spring structure wound from stainless steel wire.

6. The cardiovascular interventional pump catheter of claim 1, wherein the power supply lumen is a dual lumen channel through which two power supply wires pass, the cross-sectional shape of which is a shape of two circles connected together.

7. The cardiovascular intervention pump catheter of claim 1, wherein the catheter is sealingly connected at one end thereof located outside the body to a quick connector having a plurality of outlets for the passage of a plurality of wires therethrough, and wherein the intervention pump is connected to the catheter via the quick connector.