Medical infusion connector with shut-off valve connected to indwelling catheter outside the body

Abstract

A device for introducing media into the body, especially a medical infusion connector with a shut-off valve (4) connected to an indwelling catheter outside the body, including a connecting seat (1) and a connector body (2), and the front end of the connecting seat (1) It is connected with the extension tube (6) of the indwelling catheter, and the rear end of the joint body (2) is connected with the infusion set; it also includes a joint base (3), and the joint base (3) or the connection base (1 ) in one-piece structure or split structure but fixedly connected with the connection seat (1), and the front section of the joint body (2) is sleeved in the inner cavity of the joint base (3) in a manner that can be advanced and retreated. The device has the following characteristics: the method of preventing negative pressure and eliminating negative pressure is simple, effective, and easy to operate; and the intervention of the shut-off valve (4) cuts off the infusion channel while eliminating negative pressure, which is not only more hygienic and safer, Moreover, it is structurally ensured that the joint body (2) must be retreated first when the infusion is performed again, so that the joint body (2) has a space to advance to eliminate negative pressure after the infusion is completed. As the joint body (2) advances and gradually cuts off the flow, the shut-off valve (4) also functions as a flow regulating valve.

Description

technical field [0001] The invention relates to a device for introducing a medium into the body, in particular to a medical transfusion connector with a shut-off valve connected with an indwelling catheter outside the body. Background technique [0002] In clinical medicine, when patients need multiple infusions, indwelling catheters are usually used in vitro, and the connection methods between indwelling catheters and infusion sets are divided into needle connection and needleless connection. A needle connection method in the prior art such as figure 1 As shown, the medical infusion connector is composed of a connection base 1 and a connector body 2 affixed thereto. The connector body 2 connected with a needle is usually also called a heparin cap. The needle tube of the infusion set is inserted from the sealing rubber plug at the top of the joint body 2 . At the end of the infusion, when the needle tube of the infusion set is pulled out, the space originally occupied by t...

AI Technical Summary

Problems solved by technology

This kind of operation is cumbersome and there will still be a space that cannot be filled by the sealing fluid, and negative pressure will still be generated. In order to make up for this deficiency, it is customary to attach the stop clip to the catheter after clamping the extension tube with the stop clip. The component slides in the direction, so that the extension tube is gradually squeezed, and the liquid in the extension tube is squeezed into the lumen of the indwelling catheter to drive out the backflow blood. The tube is elongated and thinner. During the indwelling period, the catheter assembly is pulled out many times. In severe cases, the extension tube will be broken and cause bleeding. In addition, the catheter assembly is stuck on the patient's body. The length of the extension tube is limited. Be careful, the catheter assembly will be pulled away from the patient's body. In order to avoid the above-mentioned accidents, the medical staff should be cautious when operating. Sometimes the length of the stop clip is not enough to completely drive the blood out of the catheter, so this operation method is invisible. Increased workload and psychological burden of medical staff

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