Ultra-high precision magnetostrictive injection pump with self-sensing function

A magnetostrictive and self-sensing technology, applied in the direction of hypodermic injection equipment, pressure infusion, drug equipment, etc., can solve the problems of wasting time, inability to accurately control the dosage, etc., to expand the scope of use, avoid errors, Solve the effect of large error

Inactive Publication Date: 2018-09-14
SHANGHAI INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When performing intravenous anesthesia, the anesthetist usually uses a syringe to inject the anesthetic into the patient's body, and the dosage is manually controlled. This method wastes time and cannot accurately control the dosage

Method used

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  • Ultra-high precision magnetostrictive injection pump with self-sensing function
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  • Ultra-high precision magnetostrictive injection pump with self-sensing function

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, so as to help understand the content of the present invention.

[0027] Such as figure 1 and 2 As shown in FIG. 1 and 2 , respectively, are a schematic diagram and a cross-sectional view of the overall structure of an ultra-high-precision magnetostrictive syringe pump with self-sensing function provided by the present invention. The syringe pump includes a pump body 21, a syringe 14 and a bracket 15 supporting the syringe 14. The pump body 21 includes a housing, internal components and a left end cover 20 and a right end cover 11 located at the left and right ends of the housing for sealing the housing, The left end cover 20 and the right end cover 11 are fixedly connected to the housing by screws, and the central axis inside the housing is provided with a giant magnetostrictive rod 2, a piston 5 and a transmission shaft 12 in sequence from left to ...

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Abstract

The invention discloses an ultra-high precision magnetostrictive injection pump with a self-sensing function. The pump comprises a pump body, a syringe and a bracket, the pump body comprises a housingand left and right end covers at two ends of the housing, the inner axis of the inside of the housing is provided with a giant magnetostrictive rod, a piston and a transmission shaft from left to right, the transmission shaft is connected to the syringe through the right end cover, a plunger is arranged between the transmission shaft and the housing, a guiding ring is arranged between the plungerand the transmission shaft, a pump chamber filled with liquid is arranged between the plunger and the piston, a spring abutting the plunger is embedded in the right side of the piston, the outer portion of the giant magnetostrictive rod is sleeved with a coil bobbin, the piston is connected with the giant magnetostriction rod through the coil bobbin, a driving coil is arranged on the coil bobbin,a permanent magnet is arranged on the left end cover and is opposite to the driving coil, and the elongation of the giant magnetostrictive rod is adjusted in real time through a control system. The pump has high injection precision, wide speed regulation range and simple operation, is capable of self-sensing control, can effectively avoid errors caused by the manual operation, and is high in injection efficiency.

Description

technical field [0001] The invention relates to the technical field of medical injection pumps, in particular to an ultra-high-precision magnetostrictive injection pump with self-sensing function. Background technique [0002] Anesthesia is an essential drug during surgery. When performing intravenous anesthesia, the anesthetist usually uses a syringe to inject the anesthetic into the patient's body, and the dosage is manually controlled. This method wastes time and cannot accurately control the dosage. Nowadays, micro-injection pumps are often used instead of manual control of the dosage. Although this type of micro-injection pump can improve the operation accuracy, it still needs to manually adjust the dosage, and cannot perform self-sensing closed-loop control. In the process of clinical application, automatic An anesthetic microinjection pump that senses and adjusts the dosage will be much safer, and can improve injection efficiency and reduce surgical pressure. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/145
CPCA61M5/1454A61M2205/0272A61M2205/3334
Inventor 刘旭辉孙璐婵杨光郭甜甜蒲美玲罗启文邱冶张珈豪
Owner SHANGHAI INST OF TECH
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