Transcavital needle insertion device
First Claim
1. A transcavital needle insertion device comprising:
- a support sheath;
an ultrasound probe; and
a guide sheath having at least one needle guide.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a transcavital needle insertion device that incorporates a transrectal ultrasound (TRUS) probe; a support sheath incorporated with, but mechanically decoupled from the TRUS probe to substantially stabilize the target tissue being imaged; and a needle guide sheath that moves relative to the TRUS probe. The device substantially enables a practitioner to more accurately and precisely insert a therapeutic needle into a target tissue, such as a prostate, in a decoupled three degree of freedom coordinate space that is registered to the imagery generated from the TRUS probe. The support sheath may enable the practitioner to move the TRUS probe, and independently position and insert the needle, without problems brought about by variable deformation of the target tissue, which would otherwise result from motion of the TRUS probe and the needle.
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Citations
25 Claims
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1. A transcavital needle insertion device comprising:
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a support sheath;
an ultrasound probe; and
a guide sheath having at least one needle guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for inserting a needle into a cavity wall using a transcavital needle insertion device having a support sheath, an ultrasound probe, and a guide sheath having a needle guide, the method comprising the steps of:
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inserting the transcavital needle device into a cavity;
obtaining an ultrasound image;
determining a target location inside the cavity wall;
computing a guide sheath position corresponding to the target location;
computing a needle depth corresponding to the target location and the guide sheath position;
positioning the guide sheath according to the guide sheath position; and
inserting the needle according to the needle depth. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A computer readable medium encoded with a program for controlling a transcavital needle insertion device, the device having a guide sheath, a guide sheath positioner, and a needle depth positioner, the program comprising the steps of:
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acquiring a desired needle tip position;
converting the desired needle tip position to a desired translational position for the guide sheath, a desired rotational position for the guide sheath, and a desired needle depth;
sending a command to the guide sheath positioner corresponding to the desired translation position;
sending a command to the guide sheath positioner corresponding to the desired rotational position; and
sending a command to the needle depth positioner corresponding to the desired needle depth. - View Dependent Claims (23, 24)
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25. The computer readable medium of step 22, wherein the step of sending a command to the needle depth positioner comprises the step of displaying information to a practitioner informing the practitioner to insert a needle to the desired needle depth.
Specification