Recommending transseptal needle curvature based on anatomy
A tool to determine a pre-puncture needle shape to provide a desired approach to a target location based on measured patient anatomy is disclosed herein. Anatomical relationship between an outlet of an access vessel and a desired puncture sight on the interatrial septum is used to determine the pre-puncture needle shape. The tool may be used to provide a recommended preferred needle shape from a collection of predetermined needle shapes (e.g. commercially available needle shapes) and/or recommend a bent shape to which a physician may modify a predetermined needle shape to fit. Additionally, or alternatively, the tool may be used to provide a recommended preferred needle shape to manufacturers to create a bespoke needle shape for a given patient and/or a recommended preferred needle shape for patient cohort having similar anatomy within the cohort.
1. A system comprising:
a processor; and
non-transitory computer-readable medium with instructions thereon, that when executed by the processor, cause the system to:
determine a curvature of a transseptal needle based at least in part on a spatial relationship between an access vessel and a target puncture location and a predetermined needle shape;
determine a deployed position of the predetermined needle shape such that a proximal point of the predetermined needle shape is positioned at the access vessel and a distal point of the predetermined needle shape is positioned at an interatrial septum; and
determine the curvature using a rotational matrix to move the distal point to the target puncture location while holding the proximal point fixed.
2. The system of claim 1 , the access vessel comprising an inferior vena cava.
3. The system of claim 1 , the access vessel comprising a superior vena cava.
4. The system of claim 1 , the instructions further being configured to cause the system to:
determine the spatial relationship between the access vessel and the target puncture location.
5. The system of claim 1 , the instructions further being configured to cause the system to:
generate an anatomical map, wherein the anatomical map comprises the access vessel approximate a right atrium and at least a portion of an interatrial septum of the right atrium;
identify, based on the anatomical map, a location of the access vessel approximate the right atrium and the target puncture location; and
determine the spatial relationship between the access vessel and the target puncture location.
6. The system of claim 5 , the instructions further being configured to cause the system to:
modify the display of the anatomical map based on intracardiac fluoroscopy and/or ultrasound data.
7. The system of claim 5 , the instructions further being configured to cause the system to:
generate the anatomical map based at least in part on electromagnetic mapping.
8. The system of claim 1 , further comprising:
a display,
the instructions further being configured to cause the system to:
display a recommended curvature of the transseptal needle on the display.
9. The system of claim 1 , the instructions further being configured to cause the system to:
receive an indication of a needle selection of a needle in a catalogue of needles; and
identify the predetermined needle shape based on the indication of the needle selection.
10. The system of claim 9 , the instructions further being configured to cause the system to:
receive a needle identifier from an electrically erasable programmable read-only memory (EEPROM) of a needle in communication with the system; and
determine the indication of needle selection based at least in part on the needle identifier.
11. The system of claim 1 , the instructions further being configured to cause the system to:
select, based at least in part on the curvature of the transseptal needle, a preferred needle shape from a plurality of pre-determined needle shapes.
12. The system of claim 11 , the instructions further being configured to cause the system to:
recommend, to a user of the system, the preferred needle shape.
13. The system of claim 1 , the instructions further being configured to cause the system to:
recommend a transseptal needle design based at least in part on the curvature.
14. A method for transseptal puncture, the method comprising:
identifying a first location on an anatomical map of a patient, at an outlet of an inferior vena cava;
identifying a second location, on the anatomical map, at a desired puncture site on a fossa ovalis;
extrapolating a curve between the first location and the second location;
determining a deployed position of a predetermined needle shape such that a proximal point of the predetermined needle shape is positioned at the first location and a distal point of the predetermined needle shape is positioned at an interatrial septum;
determining a curvature of a needle shape template based at least in part on the extrapolated curve and using a rotational matrix to move the distal point to the desired puncture site while holding the proximal point fixed; and
providing, on a display, the needle shape template.
15. The method of claim 14 , further comprising:
recommending the predetermined needle shape.