A percutaneous myocardial protective solution perfusion catheter

Abstract

The present invention discloses a percutaneous myocardial protective fluid perfusion catheter, which belongs to a medical device. The fifth channel hole of the present invention is located between the first balloon and the first channel, and can lead the blood in the left ventricle out of the body and enter the extracorporeal circulation machine, which plays a role in decompressing the left ventricle; the present invention can be placed through percutaneous intervention, and the myocardial protective fluid can be perfused to stop the heart, and the heart and ascending aorta can be deflated to avoid adhesion behind the sternum; when the sternum is split vertically, the tearing of the heart and ascending aorta is avoided. The present invention is used when the heart, aorta and anterior mediastinum are adhered or the enlarged heart and ascending aorta are close to the sternum, and when the sternum is split vertically, damage to the heart and ascending aorta is avoided.

Description

Technical Field

[0001] The invention belongs to medical equipment and relates to a percutaneous myocardial protective solution perfusion catheter. Background Art

[0002] When performing a cardiac operation, myocardial protection fluid needs to be perfused into the heart to put the heart in an electromechanical static state (i.e. cardiac arrest), so as to ensure the safe and efficient operation and protect the heart at the same time. In clinic, it is often encountered that the sternum is opened again for another cardiac operation. After the first cardiac operation, the outer surface of the heart or the ascending aorta may adhere to the sternum. When adhesion occurs, longitudinal splitting of the sternum may cause the risk of tearing the heart and the ascending aorta, causing blood to gush out of the heart and the ascending aorta, resulting in serious surgical accidents. When encountering a significantly enlarged heart or a significantly dilated ascending aorta, the heart or the ascending aorta will be close to the back of the sternum. At this time, longitudinal splitting of the sternum may also cause the risk of tearing the heart or the ascending aorta. Therefore, a method is urgently needed to avoid such surgical accidents. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a percutaneous myocardial protective fluid perfusion catheter; the purpose is to implant a perfusion catheter through the femoral artery under DSA before open-chest heart surgery, perfuse myocardial protective fluid, stop the heart, and drain the heart blood out of the body for extracorporeal circulation, so as to shrink the significantly enlarged heart or ascending aorta to facilitate subsequent surgery; at the same time, avoid the occurrence of surgical accidents.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a percutaneous interventional myocardial protective fluid perfusion catheter, characterized in that it includes a perfusion catheter body with a circular radial cross-section; the surface of one end of the perfusion catheter body is circumferentially covered with elastic capsule membranes, a total of two, which form a first elastic capsule and a second elastic capsule after being filled with a medium; a first channel, a second channel, a third channel and a fourth channel are arranged inside the perfusion catheter body; the first channel is located at the axis of the perfusion catheter body, and one end of the perfusion catheter body where the elastic capsule membrane is arranged is connected to the outside world through the first channel opening; one end of the second channel is connected to the outside world through the second channel opening between the two elastic capsule membranes; one end of the third channel is connected to the second elastic capsule; one end of the fourth channel is connected to the first elastic capsule.

[0005] A further technical solution is that a fifth channel is also provided inside the perfusion catheter body; on the side of the elastic capsule membrane closest to the end of the perfusion catheter body, the fifth channel is connected to the outside through a fifth channel opening, and the fifth channel opening and the second channel opening are respectively located on both sides of the elastic capsule membrane.

[0006] The beneficial effect of adopting the above technical solution is that: before the operation, after puncturing the femoral artery and guiding with a medical guide wire, a track from the femoral artery to the left ventricle of the heart is established, then the first channel of the perfusion catheter is put on the medical guide wire, and one end with the elastic capsule membrane is smoothly sent to the heart, so that the first elastic capsule is located in the left ventricle, and the second elastic capsule is located in the ascending aorta, and then saline with contrast agent is injected into the first elastic capsule, and the catheter is dragged so that the first elastic capsule is located under the aortic valve, and then saline with contrast agent is introduced into the second elastic capsule, so that the second elastic capsule is stuck in the ascending aorta, Then, myocardial cardioplegia solution is injected from the second channel, allowing the cardioplegia solution to enter the opening of the coronary artery to achieve the purpose of stopping the heart. At the same time, through traditional femoral arteriovenous catheterization, venous blood in the body is led out of the body through the femoral vein and enters the extracorporeal circulation machine, and then arterial blood is led back into the body through the femoral artery to establish extracorporeal circulation. At the same time, blood in the left ventricle is led out of the body through the first channel or the fifth channel and enters the extracorporeal circulation machine, which has the effect of decompressing the left ventricle; the heart and ascending aorta are deflated to avoid adhesion behind the sternum; and when the sternum is cut longitudinally, tearing of the heart and ascending aorta is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0008] Figure 1 It is a schematic diagram of the heart structure;

[0009] Figure 2 It is a schematic diagram of the structure of an embodiment of the present invention;

[0010] Figure 3 It is a structural schematic diagram of the present invention.

[0011] 1. Right atrium; 2. Right ventricle; 3. Left ventricle; 4. Left atrium; 5. Aorta; 6. Pulmonary artery; 7. Perfusion catheter body; 8. Second elastic sac; 9. First elastic sac; 10. First channel; 11. Second channel; 12. Fifth channel. DETAILED DESCRIPTION

[0012] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0014] In the embodiment of the present invention, Figure 3 As shown, a percutaneous interventional myocardial protective fluid perfusion catheter comprises a perfusion catheter body 7 with a circular radial cross-section; the surface of one end of the perfusion catheter body 7 is circumferentially covered with elastic capsule membranes, two in total, which are filled with a medium to form a first elastic capsule 9 and a second elastic capsule 8; a first channel 10, a second channel 11, a third channel and a fourth channel are arranged inside the perfusion catheter body 7; the first channel 10 is located at the axis of the perfusion catheter body 7, and one end of the first channel 10 where the elastic capsule membrane is arranged on the perfusion catheter body 7 is connected to the outside through the first channel opening; one end of the second channel 11 is connected to the outside through the second channel opening between the two elastic capsule membranes; one end of the third channel is connected to the second elastic capsule 8; one end of the fourth channel is connected to the first elastic capsule 9.

[0015] The specific implementation method is as follows: before the operation, after puncturing the femoral artery and guiding with a medical guide wire, a track from the femoral artery to the left ventricle 3 of the heart is established, and then the first channel 10 of the perfusion catheter is put on the medical guide wire, and one end with the elastic capsule membrane is smoothly delivered to the heart, so that the first elastic capsule 9 is located in the left ventricle 3, and the second elastic capsule 8 is located in the ascending aorta, and then the first elastic capsule 9 is injected with saline containing contrast agent through the fourth channel, and the catheter is dragged so that the first elastic capsule 9 is located under the aortic valve, and then the second elastic capsule 8 is introduced with saline containing contrast agent through the third channel, so that the second elastic capsule 8 is stuck in the left ventricle 3. At the ascending aorta, myocardial cardioplegia solution is then injected from the second channel 11, so that the cardioplegia solution enters the opening of the coronary artery to achieve the purpose of cardiac arrest. At the same time, through the traditional femoral artery and vein catheterization, the venous blood in the body is led out of the body through the femoral vein and enters the extracorporeal circulation machine, and then the arterial blood is led back to the body through the femoral artery to establish extracorporeal circulation. At the same time, through the first channel 10, the blood in the left ventricle 3 is led out of the body and enters the extracorporeal circulation machine, which has the effect of decompressing the left ventricle 3; the heart and ascending aorta are deflated to avoid adhesion behind the sternum; when the sternum is longitudinally cut, the tearing of the heart and ascending aorta is avoided.

[0016] In the embodiment of the present invention, a fifth channel 12 is further provided inside the perfusion catheter body 7; on the side of the elastic capsule membrane closest to the end of the perfusion catheter body 7, the fifth channel 12 is connected to the outside through a fifth channel opening, and the fifth channel opening and the second channel opening are respectively located on both sides of the elastic capsule membrane.

[0017] The specific implementation method is as follows: before the operation, after puncturing the femoral artery and guiding with a medical guide wire, a track from the femoral artery to the left ventricle 3 of the heart is established, and then the first channel 10 of the perfusion catheter is put on the medical guide wire, and one end with the elastic capsule membrane is smoothly delivered to the heart, so that the first elastic capsule 9 is located in the left ventricle 3, and the second elastic capsule 8 is located in the ascending aorta, and then the first elastic capsule 9 is injected with saline containing contrast agent through the fourth channel, and the catheter is dragged so that the first elastic capsule 9 is located under the aortic valve, and then the second elastic capsule 8 is introduced with saline containing contrast agent through the third channel, so that the second elastic capsule 8 is stuck in the ascending aorta. Then, myocardial cardioplegia solution is injected from the second channel 11, so that the cardioplegia solution enters the opening of the coronary artery to achieve the purpose of cardiac arrest. At the same time, through the traditional femoral artery and vein catheterization, the venous blood in the body is led out of the body through the femoral vein and enters the extracorporeal circulation machine, and then the arterial blood is led back to the body through the femoral artery to establish extracorporeal circulation, and the first channel 10 is blocked at the same time; the blood in the left ventricle 3 is led out of the body through the fifth channel 12 and enters the extracorporeal circulation machine, which has the effect of decompressing the left ventricle 3; the heart and the ascending aorta are deflated to avoid adhesion behind the sternum; when the sternum is longitudinally cut, the tearing of the heart and the ascending aorta is avoided.

Claims

1. A medical component for cardiac surgery, characterized in that: include: Medical guide wire; as well as A percutaneous myocardial protective solution perfusion catheter comprises a perfusion catheter body with a circular radial cross section; The surface of one end of the perfusion catheter body is circumferentially covered with elastic sac membranes, with a total of two, which are filled with a medium to form a first elastic sac and a second elastic sac; a first channel, a second channel, a third channel and a fourth channel are arranged inside the perfusion catheter body; the first channel is located at the axis of the perfusion catheter body, and one end of the elastic sac membrane arranged on the perfusion catheter body is connected to the outside through the first channel opening; the first channel is used to pass the medical guide wire to lead blood out of the body, one end of the second channel is connected to the outside through the second channel opening between the two elastic sac membranes, and the second channel is used to inject myocardial arrest solution; one end of the third channel is connected to the second elastic sac; one end of the fourth channel is connected to the first elastic sac.

2. A medical component for cardiac surgery according to claim 1, characterized in that: A fifth channel is also provided inside the perfusion catheter body; the fifth channel is connected to the outside through a fifth channel opening on the side of the elastic capsule membrane closest to the end of the perfusion catheter body, and the fifth channel opening and the second channel opening are respectively located on both sides of the elastic capsule membrane; the fifth channel is used to lead blood out of the body.

Images