Air pump pipe fitting and manufacturing method thereof

Abstract

The invention provides an air pump pipe fitting which comprises a hollow body (1), a first spiral line (2), a second spiral line (3) and a hoop (5). The first spiral line (2) is arranged on the surface of the body (1), and the inner surface of the second spiral line (3) partially contacts with the body (1) and partially contacts with the first spiral line (2); the first spiral line (2) is inclined along a first direction of the length direction of the body (1), and the second spiral line (3) is inclined along a second direction of the length direction of the body (1); the included angle between the first direction and the second direction is 180 degrees; adjacent turns of the first spiral line (2) form a first interval, and adjacent turns of the second spiral line (3) form a second interval; the first interval is equal to the second interval; the first spiral line (2) forms at least one point of intersection with the second spiral line (3) within the first interval. The second spiral line (3) can fix the first spiral line (2) while enhancing the strength of the pipe fitting, and the pipe fitting is not prone to falling off.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an air pump tube and a manufacturing method thereof. Background technique [0002] Air pump tubing is often used in the medical field, for example to transport blood in extracorporeal blood circuits. It is necessary, for example, to transport blood at an appropriate flow rate during the extracorporeal blood circulation of hemodialysis. Such a catheter must have a sufficiently flexible structure to allow a stable flow rate to maintain a smooth hemodialysis process. [0003] For another example, the current international and domestic guidelines on the treatment of postpartum hemorrhage all propose the use of uterine cavity balloon packing, especially postpartum hemorrhage that occurs after vaginal delivery. The principle of hemostasis by balloon compression is to generate a hydrostatic pressure from the inside of the uterine cavity to the outside of the uterine cavity, which is gre...

AI Technical Summary

Problems solved by technology

[0006] However, in the above several application scenarios, traditional pipe fittings have thinner walls, which are prone to local blockage after being bent at a certain angle, resulting in a large flow rate loss

If the pipe fitting is too soft, it will be easily bent and blocked; if the pipe fitting is too hard, it will easily fall off from the pump body interface.

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