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CN-121971168-A - Device for locating a medical object and method for emitting a light distribution

CN121971168ACN 121971168 ACN121971168 ACN 121971168ACN-121971168-A

Abstract

The invention relates to an apparatus for locating a medical object, comprising a control unit and a light guiding unit, wherein the control unit is configured to provide planning information about a planned location of the medical object, wherein the light guiding unit is configured to emit at least one light fan according to the planning information, wherein the at least one light fan has two different angular ranges adjoining each other along a borderline, wherein the angular ranges and/or the borderline has optically distinguishable characteristics, wherein the borderline illuminates at least a part of the planned location of the medical object. The invention also relates to a method for emitting a light distribution and a computer program product.

Inventors

  • A. Regensberg

Assignees

  • 西门子医疗股份公司

Dates

Publication Date
20260505
Application Date
20251029
Priority Date
20241031

Claims (18)

  1. 1. Device for locating a Medical Object (MO), Comprising a Control Unit (CU) and a light guiding unit (LFE), Wherein the Control Unit (CU) is configured to provide Planning Information (PI) about a planned localization of the Medical Object (MO), Wherein the light guiding unit (LFE) is configured to emit at least one light fan (LF 1) according to the Planning Information (PI), Wherein the at least one light fan (LF 1) has two different angular ranges (WB 1.1, WB 1.2) which adjoin each other along a boundary line (GL 1), Wherein the angular range (WB 1.1, WB 1.2) and/or the boundary line (GL 1) have optically distinguishable characteristics, Wherein the boundary line (GL 1) irradiates at least a part of the planned positioning of the Medical Object (MO) in the operating state of the device.
  2. 2. The device according to claim 1, Wherein the optically distinguishable characteristics of the angular range (WB 1.1, WB 1.2) and/or the boundary line (GL 1) comprise at least one of the following features: the color of the light-emitting diode is chosen, A spatial and/or temporal pattern, The polarization of the light is chosen to be, The brightness of the light is chosen to be, Line width and/or -Ambiguity.
  3. 3. The device according to claim 1 or 2, Wherein the light guiding unit (LFE) has a light source and/or a filter unit and/or a coupling unit, which is configured to produce optically distinguishable characteristics of the angular range (WB 1.1, WB 1.2) and/or of the boundary line (GL 1).
  4. 4. The device according to any of the preceding claims, Wherein the light guiding unit (LFE) is configured to adjust the angular range (WB 1.1, WB 1.2) according to the Planning Information (PI).
  5. 5. The device according to any of the preceding claims, Wherein the light guiding unit (LFE) is configured to emit a first light fan and a further light fan (LF 2) according to the Planning Information (PI), Wherein the first light fan (LF 1) has two different first angle ranges (WB 1.1, WB 1.2) which adjoin each other along a first boundary line (GL 1), Wherein the first angular range (WB 1.1, WB 1.2) and/or the first boundary line (GL 1) have optically distinguishable properties, Wherein the intersection of the first boundary line (GL 1) and the second light fan (LF 2) irradiates at least a part of the planned positioning of the Medical Object (MO) in the operating state of the device.
  6. 6. The apparatus according to claim 5, Wherein the further light fan (LF 2) has two different further angular ranges (WB 2.1, WB 2.2) which adjoin each other along a further boundary line (GL 2), Wherein the first and the further angular range (WB 1.1, WB1.2, WB2.1, WB 2.2) and/or the first and the further boundary line (GL 1, GL 2) have optically distinguishable properties, Wherein the intersection of the first boundary line and the further boundary line (GL 1, GL 2) irradiates at least a part of the planned positioning of the Medical Object (MO) in the operating state of the device.
  7. 7. The device according to any of the preceding claims, Wherein the Medical Object (MO) has at least one marker structure (MK), Wherein the at least one light fan (LF 1) and/or the boundary line (GL 1) in the operating state of the device just illuminate the marking structure (MK) when the Medical Object (MO) is positioned according to the plan.
  8. 8. The device according to any of the preceding claims, Wherein the Planning Information (PI) specifies a planned positioning of the Medical Object (MO) with respect to the examination object (31) in advance, Wherein the device comprises a sensor for capturing the instantaneous position of the examination object (31), Wherein the Control Unit (CU) is configured to register the Planning Information (PI) with an instantaneous position of the examination object (31).
  9. 9. The device according to any of the preceding claims, Also included is a medical imaging device that, Wherein the light guiding unit (LFE) is arranged on and/or at least partially integrated into the medical imaging device.
  10. 10. The device according to any of the preceding claims, Wherein the medical imaging device is configured as a medical X-ray device (37) for acquiring X-ray image data of an examination object (31), Wherein the X-ray device (37) comprises an X-ray detector (34) and an X-ray source (33) arranged in an opposed and defined arrangement, Wherein the light guiding unit (LFE) is arranged on the X-ray detector (34), the X-ray source (33) or a common support structure of the defined arrangement.
  11. 11. Method for emitting a light distribution (LF 1, LF 2), comprising: providing (PROV-PI) Planning Information (PI) about the planned positioning of the Medical Object (MO), -Transmitting (TR-LF) at least one light fan (LF 1, LF 2) by means of a light guiding unit (LFE) according to the Planning Information (PI), Wherein the at least one light fan (LF 1) has two different angular ranges (WB 1.1, WB 1.2) which adjoin each other along a boundary line (GL 1), Wherein the angular range (WB 1.1, WB 1.2) and/or the boundary line (GL 1) have optically distinguishable properties, Wherein the boundary line (GL 1) irradiates at least a part of the planned positioning of the Medical Object (MO).
  12. 12. The method according to claim 11, Wherein the optically distinguishable characteristics of the angular range (WB 1.1, WB 1.2) and/or the boundary line (GL 1) comprise at least one of the following features: the color of the light-emitting diode is chosen, A spatial and/or temporal pattern, The polarization of the light is chosen to be, The brightness of the light is chosen to be, Line width and/or -Ambiguity.
  13. 13. The method according to claim 11 or 12, Wherein the angular range (WB 1.1, WB1.2, WB2.1, WB 2.2) is adjusted (ADJ-WB) according to the Planning Information (PI).
  14. 14. The method according to any one of claim 11 to 13, Wherein a first and a further light fan (LF 1, LF 2) are emitted (TR-LF) in dependence of the Planning Information (PI), Wherein the first light fan (LF 1) has two different first angular ranges (WB 1.1, WB 1.2) which adjoin each other along a first boundary line (GL 1), Wherein the first angular range (WB 1.1, WB 1.2) and/or the first boundary line (GL 1) have optically distinguishable properties, Wherein an intersection of the first boundary line (GL 1) and the second light fan (LF 2) irradiates at least a portion of the planned positioning of the Medical Object (MO).
  15. 15. The method according to claim 14, Wherein the further light fan (LF 2) has two different further angular ranges (WB 2.1, WB 2.2) which adjoin each other along a further boundary line (GL 2), Wherein the first angular range and the further angular range (WB 1.1, WB1.2, WB2.1, WB 2.2) and/or the first and further boundary line (GL 1, GL 2) have optically distinguishable properties, Wherein the intersection of the first boundary line and the further boundary line (GL 1, GL 2) illuminates at least a part of the planned positioning of the Medical Object (MO).
  16. 16. The method according to any one of claim 11 to 15, Wherein the Medical Object (MO) has at least one marker structure (MK), Wherein the at least one light fan (LF 1) and/or the boundary line (GL 1) exactly illuminate the marking structure (MK) when the Medical Object (MO) is positioned according to the plan.
  17. 17. The method according to any one of claim 11 to 16, Wherein the Planning Information (PI) specifies a planned positioning of the Medical Object (MO) with respect to the examination object (31) in advance, Wherein the device comprises a sensor for capturing the instantaneous position of the examination object (31), Wherein the Planning Information (PI) is registered (REG-PI) with the instantaneous positioning of the examination object (31).
  18. 18. Computer program product comprising a computer program directly loadable into the memory of a Control Unit (CU), the computer program comprising program sections for performing all the steps of the method according to any of claims 11 to 17 when the program sections are executed by the Control Unit (CU).

Description

Device for locating a medical object and method for emitting a light distribution Technical Field The invention relates to a device for locating a medical object, a method for emitting a light distribution and a computer program product. Background In medical interventions, accurate positioning of a medical subject (e.g. a needle and/or a medical instrument) is often critical, in particular in minimally invasive interventions, such as biopsies for pain treatment and/or placement of catheters. In this case, the medical object should generally be brought to the target position along the planned trajectory and/or aligned along the planned trajectory (in particular in the direction of the planning space). In particular, in vertebroplasty, a method of stabilizing the vertebral body, and other percutaneous interventions such as hip interventions, and/or pulmonary surgery such as ablations, precise placement of the needle may play a central role. Laser needle guidance systems integrated in the detectors of C-arm X-ray devices are typically used. However, these systems only work under certain conditions, for example when the planned needle path is in a defined position relative to the probe. A common problem with existing laser needle guidance systems is their limited flexibility. In vertebroplasty, laser needle guidance is generally only used for so-called bulls-eye views, whereas the view of the progression perpendicular to the needle path is inadequate from a practical point of view of the physician. Furthermore, in many percutaneous hip procedures, the bulls-eye view and part of the procedural view are difficult to access due to collision problems. Thus, adjusting the correct needle trajectory is often cumbersome and time consuming. In pulmonary surgery, lateral transmission in 3D trajectory guidance and procedural views would be very helpful. However, lasers on current C-arm X-ray devices do not provide complete trajectory information in the procedural view. In order to solve these problems, various methods have been hitherto employed. For example, conventional laser needle guidance on a C-arm X-ray device may be used, or a computer tomography device (CT device) may be used instead of a C-arm X-ray device to perform the procedure, wherein a tiltable mirror based laser needle guidance system may be used. A disadvantage of these mechanically complex laser needle guidance systems is that they require more installation space and are more expensive. Alternatively, an external navigation system may be used. Alternatively, the guidance system may be entirely abandoned, using only fluoroscopic imaging work. Disclosure of Invention The object of the present invention is therefore to achieve an improved positioning of medical objects. The present invention relates in a first aspect to an apparatus for locating a medical object. The device comprises a control unit and a light guiding unit. The control unit is configured to provide planning information regarding planned positioning of the medical object. The light guiding unit is configured to emit at least one light fan according to the planning information. The at least one light fan has two different angular ranges, which are adjacent to each other along a borderline. The angular range and/or the boundary line have optically distinguishable characteristics. The boundary line irradiates at least a portion of the planned positioning of the medical object in the operational state of the device. The medical object may comprise a surgical instrument, such as a needle, in particular a puncture needle, and/or a drill, and/or a trocar, in particular a bone trocar, and/or a diagnostic instrument, such as an endoscope, in particular a laparoscope, and/or a catheter, and/or a guidewire, in particular a K-wire, and/or an implant. Advantageously, the medical object may be at least partially, in particular completely, rigid and elongated, in particular rod-shaped and/or needle-shaped. Providing the planning information may include, inter alia, retrieving and/or reading computer readable data storage and/or receiving from a data storage unit, such as a database. Further, the planning information may be provided by a providing unit of the medical imaging apparatus. Furthermore, the control unit may be configured to provide the planning information to the light guiding unit, e.g. by means of a corresponding signal. The planning information may advantageously have information, in particular predefined, about the planned spatial positioning, in particular the spatial position and/or orientation and/or posture and/or trajectory, of the medical object. The planning information can advantageously specify a planned positioning of the medical object with respect to the examination object, in particular with respect to a coordinate system of the examination object. The examination object may be, for example, a human and/or animal female patient and/or a human and/or animal male patient and/or