公开(公告)号：US12256948B1

公开(公告)日：2025-03-25

申请号：US16504185

申请日：2019-07-05

Applicant: Mary Hitchcock Memorial Hospital, for itself and on behalf of Dartmouth-Hitchcock Clinic ,  The Trustees of Dartmouth College

Inventor： Sohail K. Mirza ,  Keith D. Paulsen ,  Ryan J. Halter

IPC: A61B17/16

Abstract: A system and method for creating a cavity with a drill assembly provides a powered drill shaft assembly having an articulating tip and a position sensor along the drill shaft; a drill motor assembly with a rotational motor, linear actuator, torque sensor, rotation sensor, electrical resistance sensor and a controller unit having a plurality of programs providing user interface and controlling the operation of the powered drill arrangement; a shroud for the drill shaft with a water port; and a computer software package that combines user specifications with sensor data to control activation and displacement of the drill with a user interface, controls the motor for rotational speed and drilling depth, and gives sensor status, and a display displaying status of a drilling procedure and an image from an imaging device, and that is programmable for a set of parameters for a drilling procedure.

公开(公告)号：US12239494B1

公开(公告)日：2025-03-04

申请号：US17882508

申请日：2022-08-05

Applicant: The Trustees of Dartmouth College

Inventor： Keith D. Paulsen ,  Xiaoyao Fan ,  Songbai Ji ,  Sohail K. Mirza

IPC: H04N13/239 ,  A61B34/20 ,  A61B90/00 ,  H04N13/246 ,  A61B90/50

Abstract: This invention provides a hand-held stereovision (HHS) system that is an efficient, accurate, and radiation-free imaging device to acquire intraoperative profiles of the exposed spine in prone position. The reconstructed intraoperative stereovision surfaces (iSV) are registered with preoperative CT (pCT; supine position) in a nonrigid fashion to generate updated CT images (uCT) and correct for vertebral posture and alignment changes. Updated CT images are uploaded to a commercial navigation system for surgical navigation.

公开(公告)号：US12061328B2

公开(公告)日：2024-08-13

申请号：US18144767

申请日：2023-05-08

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Pablo A. Valdes ,  David W. Roberts ,  Keith D. Paulsen ,  Frederic Leblond

IPC: G02B21/06 ,  A61B1/06 ,  G02B21/36

CPC classification number: G02B21/06 ,  A61B1/063 ,  G02B21/36

Abstract: An imaging system includes an illumination device for illuminating a target. A surgical microscope receives light from the target, the surgical microscope comprising at least one optical output port at which at least a portion of the received light is provided as an output from the surgical microscope. A tunable filter receives the portion of the received light provided as the output from the surgical microscope, the tunable filter being tunable to pass a filtered portion of the received light, the filtered portion of the received light having a plurality of wavelengths selected by the tunable filter and provided as output from the tunable filter. A high-resolution, broad-bandwidth electronic camera receives the light of a plurality of wavelengths selected by the tunable filter, the electronic camera converting the light of a plurality of wavelengths selected by the tunable filter to a plurality of electrical signals. A processor processes the plurality of electrical signals to form an image of the target.

公开(公告)号：US20230363647A1

公开(公告)日：2023-11-16

申请号：US18223466

申请日：2023-07-18

Applicant: The Trustees of Dartmouth College

Inventor： Stephen Chad Kanick ,  Brian William Pogue ,  Keith D. Paulsen ,  Jonathan T. Elliott ,  David M. McClatchy, III ,  Venkataramanan Krishnaswamy

IPC: A61B5/00

CPC classification number: A61B5/0075 ,  A61B2576/00

Abstract: A method for determining sub-diffuse scattering parameters of a material includes illuminating the material with structured light and imaging remission by the material of the structured light. The method further includes determining, from captured remission images, sub-diffuse scattering parameters of the material. A structured-light imaging system for determining sub-diffuse scattering parameters of a material includes a structured-light illuminator, for illuminating the material with structured light of periodic spatial structure, and a camera for capturing images of the remission of the structured light by the material. The structured-light imaging system further includes an analysis module for processing the images to quantitatively determine the sub-diffuse scattering parameters. A software product includes machine-readable instructions for analyzing images of remission of structured light by a material to determine sub-diffuse scattering parameters of the material.

公开(公告)号：US10973589B2

公开(公告)日：2021-04-13

申请号：US16859065

申请日：2020-04-27

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Venkataramanan Krishnaswamy ,  Richard J. Barth, Jr. ,  Keith D. Paulsen

IPC: G06K9/00 ,  A61B34/20 ,  A61B34/00 ,  A61B90/00 ,  A61B34/10 ,  A61B17/00 ,  A61B17/34

Abstract: A method for guiding resection of local tissue from a patient includes generating at least one image of the patient, automatically determining a plurality of surgical guidance cues indicating three-dimensional spatial properties associated with the local tissue, and generating a visualization of the surgical guidance cues relative to the surface. A system for generating surgical guidance cues for resection of a local tissue from a patient includes a location module for processing at least one image of the patient to determine three-dimensional spatial properties of the local tissue, and a surgical cue generator for generating the surgical guidance cues based upon the three-dimensional spatial properties. A patient-specific locator form for guiding resection of local tissue from a patient includes a locator form surface matching surface of the patient, and a plurality of features indicating a plurality of surgical guidance cues, respectively.

公开(公告)号：US20190384048A1

公开(公告)日：2019-12-19

申请号：US16443760

申请日：2019-06-17

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Pablo A. Valdes ,  David W. Roberts ,  Keith D. Paulsen ,  Frederic Leblond

IPC: G02B21/06 ,  G02B21/36 ,  A61B1/06

Abstract: An imaging system includes an illumination device for illuminating a target. A surgical microscope receives light from the target, the surgical microscope comprising at least one optical output port at which at least a portion of the received light is provided as an output from the surgical microscope. A tunable filter receives the portion of the received light provided as the output from the surgical microscope, the tunable filter being tunable to pass a filtered portion of the received light, the filtered portion of the received light having a plurality of wavelengths selected by the tunable filter and provided as output from the tunable filter. A high-resolution, broad-bandwidth electronic camera receives the light of a plurality of wavelengths selected by the tunable filter, the electronic camera converting the light of a plurality of wavelengths selected by the tunable filter to a plurality of electrical signals. A processor processes the plurality of electrical signals to form an image of the target.

公开(公告)号：US10206632B2

公开(公告)日：2019-02-19

申请号：US15328981

申请日：2015-07-27

Applicant: THE TRUSTEES OF DARTMOUTH COLLEGE

Inventor： Ryan J. Halter ,  Keith D. Paulsen ,  Alexander Hartov

IPC: G06K9/00 ,  A61B5/00 ,  A61B5/0205 ,  A61B5/053 ,  A61B6/00 ,  A61B5/055 ,  G06T7/00 ,  A61B5/024 ,  A61B5/1455 ,  G06F19/00 ,  A61B6/03 ,  A61B5/0245 ,  A61B5/026

Abstract: A method for cardiovascular-dynamics correlated imaging includes receiving a time series of images of at least a portion of a patient, receiving a time series of cardiovascular data for the patient, evaluating correlation between the time series of images and the time series of cardiovascular data, and determining a property of the at least a portion of a patient, based upon the correlation. A system for cardiovascular-dynamics correlated imaging includes a processing device having: a processor, a memory communicatively coupled therewith, and a correlation module including machine-readable instructions stored in the memory that, when executed by the processor, perform the function of correlating a time series of images of at least a portion of a patient with a time series of cardiovascular data of the patient to determine a property of the at least a portion of a patient.

公开(公告)号：US09655545B2

公开(公告)日：2017-05-23

申请号：US14345029

申请日：2012-09-17

Applicant: The Trustees of Dartmouth College

Inventor： Songbai Ji ,  David W. Roberts ,  Keith D. Paulsen

IPC: A61B5/107 ,  A61B5/00 ,  G02B21/00 ,  G02B21/36 ,  A61B90/20 ,  G06T7/33 ,  A61B19/00 ,  G06T7/00 ,  A61B90/00

CPC classification number: A61B5/1079 ,  A61B5/0053 ,  A61B5/0077 ,  A61B90/20 ,  A61B2090/364 ,  A61B2090/371 ,  G02B21/0012 ,  G02B21/367 ,  G06T7/344 ,  G06T2200/04 ,  G06T2207/10012 ,  G06T2207/10056 ,  G06T2207/30016

Abstract: An apparatus and method for measuring mechanical properties of tissue has a stereo optical surgical microscope with at least one objective lens and at least two digital cameras such that paired images obtained from the digital cameras form stereo pairs, and a digital image processing system adapted to determine surface topography of tissue from the stereo pairs of images and a resulting surface displacement map as a result from indentation. The apparatus has an one indenter; and mechanical modeling routines stored in memory of the image processing system, the mechanical modeling routines capable of constructing computer models of mechanical properties of tissue, and fitting parameters of the computer model to observed surface displacement maps generated by coregistering surface topography of tissue with and without the indenter positioned on the tissue. In an embodiment, fitted parameters of the computer model are displayed and used to adjust a surgical plan. An apparatus and method for measuring mechanical properties of tissue has a stereo optical surgical microscope with at least one objective lens and at least two digital cameras such that paired images obtained from the digital cameras form stereo pairs, and a digital image processing system adapted to determine surface topography of tissue from the stereo pairs of images and a resulting surface displacement map as a result from indentation. The apparatus has an one indenter; and mechanical modeling routines stored in memory of the image processing system, the mechanical modeling routines capable of constructing computer models of mechanical properties of tissue, and fitting parameters of the computer model to observed surface displacement maps generated by coregistering surface topography of tissue with and without the indenter positioned on the tissue. In an embodiment, fitted parameters of the computer model are displayed and used to adjust a surgical plan.

公开(公告)号：US20160157723A1

公开(公告)日：2016-06-09

申请号：US15013623

申请日：2016-02-02

Applicant: The Trustees of Dartmouth College

Inventor： Stephen Chad Kanick ,  Brian William Pogue ,  Keith D. Paulsen ,  Jonathan T. Elliott ,  David M. McClatchy, III ,  Venkataramanan Krishnaswamy

IPC: A61B5/00

CPC classification number: A61B5/0075 ,  A61B2576/00

Abstract: A method for determining sub-diffuse scattering parameters of a material includes illuminating the material with structured light and imaging remission by the material of the structured light. The method further includes determining, from captured remission images, sub-diffuse scattering parameters of the material. A structured-light imaging system for determining sub-diffuse scattering parameters of a material includes a structured-light illuminator, for illuminating the material with structured light of periodic spatial structure, and a camera for capturing images of the remission of the structured light by the material. The structured-light imaging system further includes an analysis module for processing the images to quantitatively determine the sub-diffuse scattering parameters. A software product includes machine-readable instructions for analyzing images of remission of structured light by a material to determine sub-diffuse scattering parameters of the material.

Abstract translation: 用于确定材料的次漫散射参数的方法包括用结构化光照射材料并通过结构化光的材料进行成像缓解。 该方法还包括从捕获的缓解图像中确定材料的次漫散射参数。 用于确定材料的次散射散射参数的结构光成像系统包括用于用周期性空间结构的结构光照射材料的结构光照明器，以及用于通过所述结构光照明器 材料。 结构光成像系统还包括分析模块，用于处理图像以定量地确定亚漫射散射参数。 软件产品包括用于通过材料分析结构光的缓解图像以确定材料的次漫散射参数的机器可读指令。

公开(公告)号：US20160038252A1

公开(公告)日：2016-02-11

申请号：US14919411

申请日：2015-10-21

Applicant: The Trustees of Dartmouth College

Inventor： Richard J. Barth, JR. ,  Keith D. Paulsen ,  Venkataramanan Krishnaswamy

IPC: A61B19/00

CPC classification number: A61B34/10 ,  A61B34/25 ,  A61B2017/008 ,  A61B2017/3405 ,  A61B2034/105 ,  A61B2034/107 ,  A61B2034/2055 ,  A61B2090/363 ,  A61B2090/371 ,  A61B2090/3908 ,  A61B2090/395

Abstract: A method for guiding resection of local tissue from a patient includes generating at least one image of the patient, automatically determining a plurality of surgical guidance cues indicating three-dimensional spatial properties associated with the local tissue, and generating a visualization of the surgical guidance cues relative to the surface. A system for generating surgical guidance cues for resection of a local tissue from a patient includes a location module for processing at least one image of the patient to determine three-dimensional spatial properties of the local tissue, and a surgical cue generator for generating the surgical guidance cues based upon the three-dimensional spatial properties. A patient-specific locator form for guiding resection of local tissue from a patient includes a locator form surface matching surface of the patient, and a plurality of features indicating a plurality of surgical guidance cues, respectively.

Abstract translation: 用于引导患者的局部组织的切除的方法包括产生患者的至少一个图像，自动确定指示与局部组织相关联的三维空间特性的多个手术指导提示，以及产生手术指导线索的可视化 相对于表面。 用于产生用于从患者切除局部组织的外科手术引导线索的系统包括用于处理患者的至少一个图像以确定局部组织的三维空间属性的位置模块，以及用于产生外科手术的外科提示发生器 基于三维空间属性的指导线索。 用于引导患者局部组织切除的患者特异性定位器形式分别包括患者的定位器形式的表面匹配表面以及指示多个手术指导线索的多个特征。