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Forming process of double-cavity tube and double-cavity tube

A molding process and cavity tube technology, applied in the direction of catheters, hollow probes, etc., can solve the problem that the effective area of ​​​​the cavity is difficult to fully utilize, and achieve easy molding quality control, high cavity utilization rate, and large effective utilization area. Effect

Pending Publication Date: 2021-04-13
DONGGUAN KEWEI MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extruded double-lumen tube is limited by the extrusion cavity, the wall of the extruded double-lumen tube will be thicker, and it is difficult to fully utilize the effective area of ​​the cavity, especially in the field of medical intubation. There are great limitations, because under the outer diameter of the cannula that is guaranteed to fit the vessel wall, the thinner the cannula wall, the greater the blood flow that can flow through the cannula within the same time period

Method used

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  • Forming process of double-cavity tube and double-cavity tube
  • Forming process of double-cavity tube and double-cavity tube
  • Forming process of double-cavity tube and double-cavity tube

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Embodiment 2

[0068] The molding process of the double-lumen tube in the embodiment itself is different from the first embodiment in that: in step S4, the inner lumen tube 10 and the outer lumen tube 20 of the wall-adhesive part are welded, including:

[0069] The ends of the inner lumen tube 10 and the outer lumen tube 20 away from the wall sticking portion are not welded.

[0070] It can be understood that the inner lumen tube 10 and the outer lumen tube 20 of the double lumen tube can be respectively connected with external joints after molding. In this embodiment, the ends of the inner lumen tube 10 and the outer lumen tube 20 away from the wall-adhesive part are not welded, that is, the outer wall of the inner lumen tube 10 near the middle part of the wall-adhesive part and the inner wall of the outer lumen tube 20 are welded, and The outer wall of the inner lumen tube 10 and the inner wall of the outer lumen tube 20 at the opposite ends of the wall-adhesive portion are not welded, so ...

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Abstract

The invention discloses a forming process of a double-cavity tube. The forming process comprises the following steps of respectively obtaining an inner cavity tube and an outer cavity tube, sleeving the outer cavity tube outside the inner cavity tube, keeping the shapes of the inner cavity tube and the outer cavity tube unchanged, adhering the inner wall of the outer cavity tube to the outer wall of the inner cavity tube to form a wall adhering part, sleeving a heat-shrinkable sleeve outside the outer cavity tube, heating the heat-shrinkable sleeve, enabling the heat-shrinkable sleeve to wrap the outer cavity tube in a heat shrinkage mode, and welding the inner cavity tube and the outer cavity tube of the wall adhering part. The invention further discloses the double-cavity tube. Firstly, the inner cavity tube and the outer cavity tube are obtained respectively, then the double-cavity tube is obtained in a mode that the inner cavity tube and the outer cavity tube are welded, the thickness of the tube wall of the formed double-cavity tube is smaller, the effective utilization area of the cavity is larger, the utilization rate of the cavity is higher, and the double-cavity tube is particularly convenient to apply to the field of medical intubation tubes.

Description

technical field [0001] The invention relates to the technical field of intubation, in particular to a molding process of a double-lumen tube and the double-lumen tube. Background technique [0002] Double-lumen tubes are more and more widely used in industries such as industry and medical treatment. see figure 1 , figure 1 It is a cross-sectional schematic diagram of an existing double-lumen tube. The double-lumen tube includes an inner-lumen tube 10 and an outer-lumen tube 20. The outer-lumen tube 20 is sleeved outside the inner-lumen tube 10. The inner wall of the outer-lumen tube 20 connects with the outer wall of the inner-lumen tube 10, thereby forming a non-interfering environment. Two cavities. When it is specifically applied to the intubation in the medical industry, the two cavities of the above-mentioned double-lumen tube are respectively connected with the arteries and veins of the human body, so as to cooperate with medical devices to complete the treatment p...

Claims

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Application Information

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IPC IPC(8): B29C48/09B29C63/42B29C65/02A61M25/00
CPCB29C48/0021B29C48/09B29C63/42B29C65/02B29C66/52211A61M25/0009A61M25/0023A61M25/0026
Inventor 郑剑波刘志军马奔袁栋平
Owner DONGGUAN KEWEI MEDICAL INSTR
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