Combination joint and production method thereof

Abstract

The invention discloses a combination joint of thermoplastic elastomer and PVC (polyvinyl chloride), and a production method of the combination joint. The combination joint comprises a PVC T-pipe and a thermoplastic elastomer connecting pipe. One pipe orifice of the T-pipe is connected with the connecting pipe by welding. The production method of the combination joint includes: nesting a weld segment of one pipe orifice of the T-pipe and a weld segment of the connecting pipe by overlapping, and keeping the nesting state; and welding together the weld segment of one pipe orifice of the T-pipe and the weld segment of the connecting pipe. The combination joint and the production method thereof have the advantages that cyclohexanone enters the inner walls of the T-pipe and the connecting pipe and enters a patient's body to cause damage due to dependence on adhesion of the cyclohexanone; harm of operators by long-term contact with the cyclohexanone is avoided; and potential safety hazards of the combination joint in use, such as connection failure and disconnection, are well avoided.

Description

technical field [0001] The invention relates to a combined joint of thermoplastic elastomer and PVC material and its manufacturing method. The combined joint is especially used in medical equipment, which can provide a firm and reliable connection, and does not require the use of chemicals in the manufacturing process. Health and Safety. Background technique [0002] Combined joints are widely used in medical equipment. For example, in peritoneal dialysis, on the one hand, it is necessary to input the peritoneal dialysis fluid in a medicine bag into the patient's peritoneal cavity through the peritoneal dialysis tube; The waste liquid in the peritoneal cavity is introduced into a drainage bag through the peritoneal dialysis tube. At this time, in order to connect the medicine bag and the drainage bag to the peritoneal dialysis tube, it is necessary to connect the two medicine bags, the drainage bag and the peritoneal dialysis tube. Set up combo joints. Wherein, the combina...

AI Technical Summary

Problems solved by technology

[0004] In actual production, because the three-way pipe and the connecting pipe are bonded with cyclohexanone, automatic production cannot be realized, and it can only be carried out manually, and the amount of cyclohexanone dipped in the manual operation is difficult to avoid. The difference is that when too much cyclohexanone is dipped, cyclohexanone easily enters the inner wall of the tee pipe and the connection sleeve, and enters the ring on the inner wall of the tee pipe and the connection sleeve when the above combined joint is used. Hexanone is easy to enter the patient's body along with the medicinal liquid, causing great harm to the patient; when the dipped cyclohexanone is too little, it will directly cause the tee pipe and the connecting pipe to be bonded weakly, resulting in the use of combined joints. Leakage and bacterial contamination threaten the life and health of patients

Moreover, cyclohexanone is a toxic chemical, which has paralysis and stimulation effects. Long-term exposure will cause dizziness, chest tightness and other symptoms, and it will also cause greater harm to operators.

In addition, because the dipping amount of cyclohexanone is difficult to control, the quality cannot be guaranteed to be uniform when using cyclohexanone to connect the tee pipe and the connecting pipe, and the connection qualification rate cannot reach 100%, which makes the above-mentioned combined joints difficult to use during use. There are safety hazards such as loose connection and falling off

Images