Interventional medical instrument delivering system

Abstract

The invention discloses an interventional medical instrument delivering system. The system comprises a catheter with a hemostasis valve of which an opening is adjustable, the catheter comprises a pipe fitting and a hemostasis valve main body, and the near end of the pipe fitting is connected with the far end of the hemostasis valve main body; the system further comprises a silica gel ring and a screw cap, the screw cap is connected with the hemostasis valve main body through a thread at the near end of the hemostasis valve main body, and the size of an opening formed in the near end of the hemostasis valve main body is adjusted by rotatably compressing or loosening the silica gel ring through the thread; the side face of the hemostasis valve main body is provided with a side hole used for being connected with a hose and a three-way valve, and an injection syringe can be connected to the hemostasis valve main body through the three-way valve to inject medicine. According to the interventional medical instrument delivering system, adjusting operation on the opening of the hemostasis valve of the catheter is easy and convenient, the condition that blood overflows and gas enters the body of a patient in the using process can be avoided, an operator can conveniently inject medicine to the patient in case of need, therefore, the catheter intervention treatment effect can be effectively improved, the operation safety is improved, and the operation success rate is increased.

Description

technical field [0001] The invention relates to an interventional medical device delivery system, which comprises a catheter with an adjustable opening of a hemostatic valve, which can prevent blood from overflowing and gas from entering the patient's body during use. Background technique [0002] At present, with the development of interventional devices, many diseases that cannot be treated by surgical operations have been cured. Compared with the surgical treatment, the interventional therapy through the catheter has less trauma, faster recovery and better curative effect. After nearly half a century of development, transcatheter interventional therapy has developed rapidly, and various interventional medical device products have also been produced. Make more and more cures and patients get treatment. For example, atrial septal defect occluder, ventricular septal defect occluder, patent ductus arteriosus occluder, patent foramen ovale occluder, left atrial appendage occ...

AI Technical Summary

Problems solved by technology

But in the process of actual use, because the gasket is damaged during the insertion and extraction of the sheath core and the implant, the gasket is deformed, or when the steel cable with uneven surface passes through the gasket, the gasket's Not tightly sealed

Cause the patient to bleed, and even cause air to be inhaled into the patient's body, resulting in an air embolism, which endangers the life of the patient

[0007] Chinese patent CN103721341A discloses a hemostatic valve device. By pressing the pressure member, the seal and the incision are opened or closed, thereby preventing blood leakage or the entry of external air. The hemostatic valve device is only suitable for small catheters and cannot Adjust the opening size of the seal

Chinese patent CN201643402U discloses a rotary hemostatic valve. By rotating the rotary handle, the extruded part is pushed away or separated from the silicone gasket. Open and close, unable to adjust the opening size of the hemostatic valve

However, the design structure of the two hemostatic valves is more complicated, and the second hemostatic valve will still cause blood leakage or gas into the body when large instruments and catheters enter and exit

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