Title:
PRESSURE CONVERSION DEVICE AND INFUSION CONNECTION JOINT
Document Type and Number:
WIPO Patent Application WO/2023/173808
Kind Code:
A1
Abstract:
A pressure conversion device and an infusion connection joint. A conversion member (1) for providing pressure conversion is provided in the pressure conversion device. When the pressure conversion device is connected to an infusion apparatus head (9) or an injector head, negative pressure is generated in the pressure conversion device, and a thrombus in an indwelling needle connected to the device is suctioned into an indwelling needle seat or the device, thereby reducing the probability that the thrombus enters the blood vessel of a patient again through the indwelling needle; then the negative pressure disappears, and liquid can normally flow into the body blood vessel through the indwelling needle. When the infusion apparatus head (9) or the injector head is pulled out, positive pressure is generated in the pressure conversion device within a certain period of time, and the liquid in the indwelling needle is pushed into the blood vessel, thereby avoiding blood backflow, thus reducing the formation of a thrombus in the indwelling needle.
Inventors:
DENG SANMING (CN)
Application Number:
PCT/CN2022/135231
Publication Date:
September 21, 2023
Filing Date:
November 30, 2022
Export Citation:
Assignee:
DENG SANMING (CN)
International Classes:
A61M5/14; A61M5/158; A61M39/10
Domestic Patent References:
| WO1987004079A1 | 1987-07-16 |
Foreign References:
| CN114642787A | 2022-06-21 | |||
| CN105879145A | 2016-08-24 | |||
| CN103845791A | 2014-06-11 | |||
| CN104606739A | 2015-05-13 | |||
| CN113577451A | 2021-11-02 |
Attorney, Agent or Firm:
SHENZHEN FENGCHENGZHIHE IP ATTORNEY LTD (CN)
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