CN112237681B - Integrated minimally invasive catheter type heart auxiliary device - Google Patents
Integrated minimally invasive catheter type heart auxiliary device Download PDFInfo
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- CN112237681B CN112237681B CN202010968965.5A CN202010968965A CN112237681B CN 112237681 B CN112237681 B CN 112237681B CN 202010968965 A CN202010968965 A CN 202010968965A CN 112237681 B CN112237681 B CN 112237681B
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Abstract
The invention relates to the technical field of heart assist, in particular to an integrated minimally invasive catheter type heart assist device, which comprises a blood circulation catheter, an axial flow impeller and a driving motor; the blood circulation catheter comprises a pigtail, a blood inflow port, a blood flow channel and a blood outflow port, and the pigtail, the blood inflow port, the blood flow channel and the blood outflow port are integrally designed and formed; according to the invention, the pigtail, the blood inflow port, the blood flow channel and the blood outflow port which form the blood circulation catheter are integrally designed, so that the application of the traditional glue and thermal welding modes is thoroughly abandoned, the risk of falling off among parts is avoided, and the risk of no glue precipitation of the product is avoided; in addition, the number of parts forming the blood circulation catheter is greatly reduced, the matching problem among the parts is not needed to be considered, the processing difficulty is reduced, and the processing time is saved.
Description
Technical Field
The invention relates to the technical field of heart assist, in particular to an integrated minimally invasive catheter type heart assist device.
Background
Mechanical heart assist devices have been touted in recent years, particularly short-term heart assist devices (for rescue, heart transition grafting), one of which, impella, is currently used for left ventricular assist; the device can increase heart displacement, and can effectively rest the heart by reducing the work of the left ventricle, thereby recovering the function and maintaining the perfusion to coronary arteries and terminal organs.
Existing image includes blood flow conduits, axial flow impellers, and drive motors; the blood circulation catheter comprises three parts, namely a tail pipe at the forefront end, a blood inflow port at the later part, a longer blood flow passage and a final blood outflow port in sequence; in the existing product manufacturing, the pigtail, the blood inflow port, the blood flow channel and the blood outflow port are all in split design, parts are more, the requirements on the joint degree of the parts are very high, and particularly, the material of the current blood inflow port is metal, so that the deviation of the joint degree occurs, steps or burrs occur, and serious vascular damage can be caused in the process of implanting blood vessels; the existing pigtail is made of medical polyurethane, the blood inflow port and the blood outflow port are made of metal, the blood flow channel is made of medical polyurethane, steel wires are embedded in the blood flow channel, different materials of all parts are bonded by glue, high requirements are set for the properties of the glue, for example, the biocompatibility of the glue must reach the standard, and the durability of the glue determines whether all parts fall off or not.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an integrated minimally invasive catheter type heart auxiliary device.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
an integrated minimally invasive catheter type heart auxiliary device comprises a blood circulation catheter, an axial flow impeller and a driving motor, wherein the blood circulation catheter comprises a pigtail tube, a blood inflow port, a blood flow channel and a blood outflow port, and the pigtail tube, the blood inflow port, the blood flow channel and the blood outflow port are integrally designed and formed.
Preferably, the method for manufacturing the blood circulation catheter comprises the following steps: firstly, manufacturing a die of a blood circulation catheter, and then obtaining a blank of the blood circulation catheter by adopting a polyurethane material with biocompatibility through an injection molding method;
and then hollowing the inside of the blank to form a blood flow channel, processing a blood flow inlet and a blood flow outlet at two ends of the blood flow channel, and finally polishing the fluid to obtain a finished product of the blood circulation catheter.
Preferably, the fluid polishing specifically adopts silicon carbide powder to wash the blood flow channel.
Compared with the prior art, the invention has the following technical effects:
1. according to the technical scheme provided by the invention, the pigtail, the blood inflow port, the blood flow channel and the blood outflow port which form the blood circulation catheter are integrally designed, so that the application of the traditional glue and thermal welding modes is thoroughly abandoned, the risk of falling off among parts is avoided, and the risk of no glue precipitation of the product is avoided;
2. in the technical scheme provided by the invention, the number of parts forming the blood circulation catheter is greatly reduced, the matching problem among the parts is not needed to be considered, the processing difficulty is reduced, and the processing time is saved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a schematic illustration of an integrated minimally invasive catheter-type heart assist device provided in accordance with an embodiment of the present invention;
the reference numerals in the figures illustrate: 1-pigtail, 2-blood inflow port, 3-blood flow channel and 4-blood outflow port.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention easy to understand, the present invention is further explained below with reference to the specific drawings.
It will be understood that when an element is referred to as being "fixed to" another element in this disclosure, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The invention provides an integrated minimally invasive catheter type heart auxiliary device, which is shown in fig. 1 and comprises a blood circulation catheter, an axial flow impeller and a driving motor, wherein the blood circulation catheter comprises a pigtail 1, a blood inflow port 2, a blood flow channel 3 and a blood outflow port 4, and the pigtail 1, the blood inflow port 2, the blood flow channel 3 and the blood outflow port 4 are integrally designed and formed.
The invention provides an integrated minimally invasive catheter type heart auxiliary device, and the manufacturing method of the blood circulation catheter comprises the following steps: firstly, manufacturing a die of a blood circulation catheter, and then obtaining a blank of the blood circulation catheter by adopting a polyurethane material with biocompatibility through an injection molding method; and then hollowing the inside of the blank to form a blood flow channel 3, processing a blood flow inlet 2 and a blood flow outlet 4 at two ends of the blood flow channel 3, and finally polishing the fluid to obtain a finished product of the blood circulation catheter.
Further, according to the invention, the fluid polishing is specifically to flush the blood flow channel by silicon carbide powder.
According to the technical scheme provided by the invention, the tail pipe 1, the blood inflow port 2, the blood flow channel 3 and the blood outflow port 4 which form the blood circulation catheter are integrally designed, so that the methods such as glue and thermal welding are thoroughly abandoned, the integral molding is adopted, the processing steps are reduced, the processing time is shortened, the number of parts is correspondingly reduced, and the falling risk of the parts in the manufacturing process of the product by the glue and thermal welding method is avoided.
When the integrated minimally invasive catheter type heart auxiliary device is specifically used, minimally invasive implantation is performed through femoral arteries of a human body, the minimally invasive catheter type heart auxiliary device ascends across an aortic arch, finally, a blood inflow port enters a left ventricle, the blood outflow port is located in an aorta, and blood accumulated in the left ventricle can be pumped out and fed into the aorta after a blood pump works.
The foregoing has outlined and described the basic principles, main features and features of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. An integrated minimally invasive catheter type heart auxiliary device comprises a blood circulation catheter, an axial flow impeller and a driving motor, and is characterized in that the blood circulation catheter comprises a pigtail tube, a blood inflow port, a blood flow channel and a blood outflow port, the pigtail tube, the blood inflow port, the blood flow channel and the blood outflow port are formed by adopting an integrated design,
the pigtail is positioned at the forefront end of the blood circulation catheter, the blood inflow port is positioned behind the pigtail,
the manufacturing method of the blood circulation catheter comprises the following steps: firstly, manufacturing a die of a blood circulation catheter, and then obtaining a blank of the blood circulation catheter by adopting a polyurethane material with biocompatibility through an injection molding method;
then hollowing the inside of the blank to form a blood flow channel, processing a blood flow inlet and a blood flow outlet at two ends of the blood flow channel, and finally polishing the fluid to obtain a blood circulation catheter finished product;
the fluid polishing specifically comprises the step of flushing a blood flow channel by silicon carbide powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010968965.5A CN112237681B (en) | 2020-09-15 | 2020-09-15 | Integrated minimally invasive catheter type heart auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010968965.5A CN112237681B (en) | 2020-09-15 | 2020-09-15 | Integrated minimally invasive catheter type heart auxiliary device |
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| Publication Number | Publication Date |
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| CN112237681A CN112237681A (en) | 2021-01-19 |
| CN112237681B true CN112237681B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010968965.5A Active CN112237681B (en) | 2020-09-15 | 2020-09-15 | Integrated minimally invasive catheter type heart auxiliary device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113599692A (en) * | 2021-08-05 | 2021-11-05 | 深圳核心医疗科技有限公司 | Blood pump |
| CN117298411A (en) * | 2022-06-23 | 2023-12-29 | 上海焕擎医疗科技有限公司 | Ventricular assist device and method for manufacturing ventricular assist device |
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| CN112237681A (en) | 2021-01-19 |
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