Granted Patent B2

US 12,629,307 · App. 17/972,153 · Granted May 19, 2026

Inventors: Shirish Joshi (Wurmlingen, DE); Faisal Kalim (Reutlingen, DE); Subhamoy Mandal (Kolkata, IN)

Assignee: ERBE VISION GMBH

A61G13/128B29C64/386B33Y50/00B33Y80/00A61B5/1077A61B2034/2072B29L2031/7546

Abstract

Claims (31)

1 . An arrangement for positioning a patient's body and tracking the patient's position during surgery comprising:

a body shape capturing device ( 11 ) adapted to acquire an outer contour shape (S) of at least a part of the patient's body ( 13 );

a processing unit ( 12 ) adapted to generate based on the outer contour shape (S) a data representation (M) for a patient receiving device ( 14 ) adapted to at least partially receive the patient's body ( 13 );

a 3D shape generating device ( 15 ) adapted to additively manufacture based on the data representation (M) at least parts of the patient receiving device ( 14 ), the patient receiving device ( 14 ) comprising at least one tracker element ( 16 ) that is connected to the patient receiving device ( 14 ) and adapted to indicate a position and orientation of the patient receiving device ( 14 );

a medical imaging system ( 21 ) adapted to acquire at least one at least two-dimensional medical image of a patient's region of interest in relation to the at least one tracker element in a preoperative scan;

a detection system ( 29 ) at an operation site for capturing data indicating the at least one tracker element's position during surgery;

a live imaging device ( 33 ) for acquiring live images of a surgical site; and

a computation unit ( 24 ) configured to generate a volume model of the patient's region of interest from the at least one at least two-dimensional medical image;

wherein the computation unit is further configured to generate a synthetic cross-sectional image of the volume model in a plane aligned with a plane of a live image and is adapted to register and blend the synthetic cross-sectional image and the live image according to the captured data of the tracker element's position during surgery.

2 . The arrangement of claim 1 , wherein the processing unit ( 12 ) is further adapted to compute the outer contour shape (S) using the at least one medical image ( 25 ).

3 . The arrangement of claim 1 , wherein the patient receiving device ( 14 ) includes a movable table ( 23 ) and an additively manufactured structure ( 31 ) that is configured to be placed on the movable table ( 23 ).

4 . The arrangement of claim 3 , wherein the 3D shape generating device ( 15 ) is adapted to additively build the additively manufactured structure ( 31 ) as one part.

5 . The arrangement of claim 3 , wherein an inner shape of the additively manufactured structure ( 31 ) is at least partly conformed to the outer contour shape (S) of the patient's body ( 13 ).

6 . The arrangement of claim 3 , wherein an inner shape of the additively manufactured structure ( 31 ) at least partly deviates from the outer contour shape (S) for bringing the patient's body into a desired position, orientation and/or shape (D).

7 . The arrangement of claim 3 , wherein the additively manufactured structure ( 31 ) comprises at least two parts ( 48 , 49 , 50 , 51 ) that are configured to be assembled, disassembled and/or reassembled.

8 . The arrangement of claim 1 , wherein the patient receiving device ( 14 ) comprises an opening ( 40 ) for exposing a region the surgery is to be performed on.

9 . The arrangement of claim 3 , wherein the 3D shape generating device ( 14 ) is adapted to additively build the at least one tracker element ( 16 ), wherein the at least one tracker element is configured to be connected to a surface of the movable table ( 23 ) and/or a surface of the additively manufactured structure ( 31 ).

10 . The arrangement of claim 1 , wherein the at least one tracker element ( 16 ) comprises spaced apart reflector elements detectable by the detection system ( 29 ).

11 . The arrangement of claim 1 , wherein the detection system comprises at least two cameras ( 37 , 38 ) for trigonometrically determining the position and the orientation of the at least one tracker element ( 21 ) in space.

12 . A method for positioning a patient's body and tracking the patient's position during surgery comprising:

acquiring an outer contour shape (S) of at least a part of the patient's body ( 13 );

generating a data representation (M) of a patient receiving device ( 14 ) for at least partially receiving the patient's body ( 13 ) based on the outer contour shape (S);

additively manufacturing at least parts of the patient receiving device ( 14 ) based on the data representation (M);

connecting at least one tracker element ( 16 ) to the patient receiving device ( 14 ) that indicates the position and orientation of the patient receiving device ( 14 );

acquiring at least one at least two-dimensional medical image of the patient's region of interest in relation to the at least one tracker element in a preoperative scan;

capturing data indicating the at least one tracker element's position during surgery at an operation site;

acquiring live images of a surgical site;

generating a three-dimensional volume model of the patient's region of interest from the at least one at least two-dimensional medical image;

generating a synthetic cross-sectional image of the volume model in a plane aligned with a plane of a live image; and

registering and blending the synthetic cross-sectional image and a live image of the live images according to the captured data of the tracker element's position during surgery.

13 . The method of claim 12 , wherein additively manufacturing at least parts of the patient receiving device ( 14 ) comprises additively building a structure ( 31 ) comprising an inner shape that is at least partly conformed to the outer contour shape (S) of the patient's body ( 13 ) and/or partly deviates from the outer contour shape (S) for bringing the patient's body ( 13 ) into a desired position, orientation, and/or shape (D).

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (47)