Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Broken limb replantation and free flap postoperative blood supply evaluation device and method

A technology of free skin flap and evaluation device, applied in the field of medical devices, can solve the problems of inaccuracy, strong subjectivity, and inability to observe in real time, and achieve the effect of short half-life

Pending Publication Date: 2022-03-18
JILIN UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the shortcomings of inaccurate, subjective, and incapable of real-time observation based on doctors' clinical experience in the evaluation of blood supply after replantation of severed limbs and free skin flaps, and to provide a new method for replantation of severed limbs and free skin flaps. Device and method for assessing blood supply after flap operation, capable of real-time, quantitative and accurate assessment of blood supply after replantation of amputated finger (limb) and free skin flap

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Broken limb replantation and free flap postoperative blood supply evaluation device and method
  • Broken limb replantation and free flap postoperative blood supply evaluation device and method
  • Broken limb replantation and free flap postoperative blood supply evaluation device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, the present embodiment provides firstly a device for assessing blood flow after limb replantation and free skin flap operation, including a photoplethysmography signal acquisition device, a fluorescence image acquisition device and a workstation 5; the photoplethysmography signal collection device The acquisition device includes a photoelectric finger clip 2 (the commercially available DDG-3300K probe can be used) and a photoplethysmography acquisition box 1 connected with the photoelectric finger clip (can be purchased directly on the market); the photoelectric finger clip 2 is clamped on The anatomically symmetrical fingers of the replanted limb (eg figure 1 As shown, the left middle finger is the replanted finger, and the photoelectric finger clip is clamped on the right middle finger), the photoelectric finger clip 2 converts the optical signal carrying the indocyanine green drug concentration information through the finger into an electri...

Embodiment 2

[0054] This embodiment uses the above-mentioned device for assessing blood supply after limb replantation and free skin flap surgery, and further provides a method for assessing blood supply after limb replantation and free skin flap surgery, including the following steps:

[0055] Clamp the photoelectric finger clip on the anatomically symmetrical finger of the replanted limb, place the affected area in the imaging field of view of a fluorescence imaging camera with a near-infrared light source, turn on the near-infrared light source, and inject a certain concentration and dose of indole Cyanine drug enters the human body through peripheral vein or central vein bolus injection. At the same time, the fluorescence imaging camera and photoelectric finger clip with near-infrared light source start to collect fluorescence images and photoplethysmography signals, and send the data to the workstation for continuous collection. After 3-15 minutes, the collection is stopped, and the wo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Wavelengthaaaaaaaaaa
Wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a device and a method for evaluating blood supply after severed limb replantation and free flap surgery. The device comprises a photoelectric volume pulse wave signal acquisition device, a fluorescence image acquisition device and a workstation. Compared with the prior art, the method has the advantages that the ICG pigment concentration spectrum extracted from the PPG signal is used as the normal metabolism curve of the ICG pigment in the human body, the difference between the ICG metabolism curve at each pixel point acquired by the ICGA and the normal ICG metabolism curve in the human body is compared, the severed finger (limb) replantation and free flap postoperative blood supply condition is evaluated, and the severed finger (limb) replantation and free flap postoperative blood supply condition is evaluated. According to the method, the influence of adverse factors on the accuracy of ICGA evaluation of flap blood supply results is avoided or reduced, severed finger (limb) replantation and free flap postoperative blood supply evaluation parameters are directly generated and displayed in an imagination mode, intuition and objectivity are achieved, and the subjectivity that surgeons evaluate severed finger (limb) replantation and free flap postoperative blood supply conditions according to clinical experience is avoided.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a device and method for assessing blood supply after limb replantation and free skin flaps. Background technique [0002] The replantation of severed limbs (fingers and toes) refers to the high-level, high-spirited limbs that are completely or incompletely severed under the aid of an optical magnifying glass, reconnected to their original positions, restore blood circulation, make them alive and restore certain functions. , Fine surgery. Skin flap transplantation is one of the most basic and commonly used procedures in reconstructive surgery. It refers to transferring the skin and subcutaneous tissue with its own blood supply to other parts to achieve the purpose of repairing and reconstructing the recipient area of ​​the flap. 24-72 hours after replantation of severed fingers (limbs) and free skin flaps is a high-incidence period for anastomotic vascular crisis, which should be i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B5/00A61B5/02A61B5/1455
CPCA61B5/0071A61B5/02007A61B5/14551A61B5/02A61B5/441
Inventor 刘光达胡新蕾蔡靖孙玉冰
Owner JILIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com