Diagnostic method, treatment method and medical system

Patent metadata

Field	Value
Publication number	US-12471864-B2
Application number	US-201916265179-A
Country	US
Kind code	B2
Filing date	Feb 1, 2019
Priority date	Feb 1, 2018
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

A diagnostic method, a treatment method and a medical system are capable of selecting reasonably and effectively a favorable order of treatments capable of achieving desired effects when lesion areas in both left and right lower limb arteries are treated in order from an artery of an arm. The method of treating a patient having lesion areas X in both left and right lower limb arteries involves determining the lesion area X to be treated first, based on at least the two pieces of selected comparative information on each of the lesion areas X.

First claim

What is claimed is:

1 . A diagnostic method for diagnosing which of plural lesion areas in a plurality of bifurcated lumens in a body of a patient should be treated first and which of the plural lesion areas in the plurality of bifurcated lumens in the body of the patient should be treated second, the plurality of bifurcated lumens being connected to a main lumen via a bifurcated portion, the method comprising:
acquiring information about the patient; identifying one or more lesion areas present in each of the bifurcated lumens using the acquired information, the one or more lesion areas present in each of the bifurcated lumens being distal of the bifurcated portion; acquiring data of first comparative information about one of the one or more lesion areas and data of second comparative information about the one of the one or more lesion areas, and acquiring data of the first comparative information about an other one of the one or more lesion areas and data of the second comparative information about the other one of the one or more lesion areas so that the data of the first and second comparative information about the one of the one or more lesion areas can be compared to the data of the first and second comparative information about the other one of the one or more lesion areas respectively to determine whether the one of the one or more lesion areas or the other one of the one or more lesion areas should be treated first via a radial artery of the patient, the first comparative information and the second comparative information each having a respective priority, the first comparative information and the second comparative information each having at least two associated criterion, and wherein the first comparative information about the one of the one or more lesion areas and the first comparative information about the other one of the one or more lesion areas includes positions of the one of the one or more lesion areas and the other one of the one or more lesion areas, and the positions of the one of the one or more lesion areas and the other one of the one or more lesion areas having a difference of at least 40 mm; determining which of the one of the one or more lesion areas and the other one of the one or more lesion areas should be treated first using the priority and a selected one of the at least two associated criterion by advancing a guiding catheter with an inner catheter to the bifurcated portion without being beyond the bifurcation portion with the one of the one or more lesion areas and the other one of the one or more lesion areas being beyond the bifurcation portion; the determining of which of the one of the one or more lesion areas and the other one of the one or more lesion areas should be treated first comprising: i) determining which of the first and second comparative information has a higher priority; and ii) comparing the data of the higher priority comparative information about the one of the one or more lesion areas and the other one of the one or more lesion areas according to the criterion selected to determine which of the one of the one or more lesion areas and the other one of the one or more lesion areas satisfies the criterion selected; determining that the guiding catheter and the inner catheter are to be advanced along a single guidewire beyond the bifurcation portion into the one of the one or more lesion areas and the other of the one of the one or more lesion areas that is determined to be treated first, the one of the one or more lesion areas and the other of the one of the one or more lesion areas being beyond the bifurcation portion; and advancing the guiding catheter and the inner catheter beyond the bifurcation portion along the single guidewire to a different location after the single guidewire has been retracted to a position proximal of the bifurcation portion, the different location being into an other one of the one or more lesion areas and the other of the one of the one or more lesion areas after the one of the one or more lesion areas and the other of the one of the one or more lesion areas that is determined to be treated first has been treated.

2 . The diagnostic method according to claim 1 , wherein the main lumen is an aorta, the bifurcated portion is an aortailiac bifurcation, and the plurality of bifurcated lumens are left and right lower limb arteries.

3 . The diagnostic method according to claim 1 , wherein the first comparative information further includes a stenosis degree of the lesion area, and the second comparative information is one of a bending degree of the lesion area, a length of the lesion area, a blood vessel diameter of the lesion area or a hardness of the lesion area.

4 . The diagnostic method according to claim 1 , wherein the acquiring of the information about the patient includes acquiring electromagnetic wave information about the patient obtained based on a changed electromagnetic wave resulting after irradiating the patient with electromagnetic waves and detecting electromagnetic waves obtained through the patient, and the method further comprises acquiring plural pieces of information about each of the one or more lesion areas using the electromagnetic wave information.

5 . The diagnostic method according to claim 1 , wherein the acquiring of the information about the patient comprises acquiring non-electromagnetic wave information about the patient.

6 . The diagnostic method according to claim 1 , which is performed by assistance by artificial intelligence and/or by the artificial intelligence.

7 . The diagnostic method according to claim 6 , wherein the artificial intelligence includes machine-learning.

8 . The diagnostic method according to claim 1 , further comprising:
determining that the guiding catheter and the inner catheter is to be advanced beyond the bifurcation portion toward the one of the one or more lesion areas.

9 . The diagnostic method according to claim 1 , further comprising:
determining that the guiding catheter and the inner catheter is to be advanced beyond the bifurcation portion toward the one of the one or more lesion areas and the other of the one of the one or more lesion areas.

10 . A treatment method for treating a patient having lesion areas in both left and right lower limb arteries, the method comprising:
selecting, from information about the patient for the treatment method via a radial artery of the patient, i) a position of each lesion area relative to at least an aortailiac bifurcation, the position of each lesion area relative to the at least the aortailiac bifurcation being distal to the aortailiac bifurcation, and wherein the position of each lesion area relative to each other has a difference of at least 40 mm, and at least one item of information selected from: ii) a stenosis degree of each lesion area, iii) a bending degree of each lesion area, iv) a length of each lesion area, v) a blood vessel diameter of each lesion area, and vi) a hardness of each lesion area, as comparative information for comparison, each of the items of information having an associated priority, and each of the items of information having at least two associated criterion; the selecting of the at least one item of information as the comparative information for comparison including selecting the item of information having a highest priority; determining one of the lesion areas to be treated first before treating an other of the lesion areas using the item of information having the highest priority as the comparative information, the one lesion area to be treated first being determined by identifying the lesion area that satisfies a selected one of the at least two associated criterion for the item of informatio

Assignees

• Terumo Corp

Inventors

• Otake Yuya
• Takahashi Haruhiko
• Kamijo Haruhiko
• Fukuoka Tetsuya

Classifications

• A61B6/032

  Transmission computed tomography [CT] · CPC title

• A61B6/5211

  involving processing of medical diagnostic data · CPC title

• A61M25/10

  Balloon catheters ({A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02;} inflatable balloons for placing stents or stent-grafts A61F2/958 {; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00}) · CPC title

• A61M2025/1045

  for treating bifurcations, e.g. balloons in y-configuration, separate balloons or special features of the catheter for treating bifurcations · CPC title

• A61B6/481

  involving the use of contrast agents · CPC title