Active template guide plate and system and method for utilizing same

• US 20070043291A1
• Filed: 06/11/2006
• Published: 02/22/2007
• Est. Priority Date: 06/11/2005
• Status: Active Grant

• Current Assignee: Howard Fidel, Raul Guierrez
• Original Assignee: Howard Fidel, Raul Guierrez
• Inventors: Guierrez, Raul, Fidel, Howard
• Granted Patent: US 7,527,593 B2
• Time in Patent Office: Days
• US Class Current: 600/439
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 2017/00274 Prostate operation, e.g. prostatectomy, turp, bhp treatment
• CPC Class Codes: A61B 2017/3411 with a plurality of holes, e.g. holes in matrix arrangement
• CPC Class Codes: A61B 2017/3413 guided by ultrasound
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/4281 characterised by sound-transmitting media or devices for coupling the transducer to the tissue
• CPC Class Codes: A61B 8/461 Displaying means of special interest
• CPC Class Codes: A61N 2005/1012 Templates or grids for guiding the introduction of sources
• CPC Class Codes: A61N 5/1027 Interstitial radiation therapy
• CPC Class Codes: A61N 5/1048 Monitoring, verifying, controlling systems and methods

Abstract

A guide plate for inserting, into a body, instruments, such as needles, used for medical purposes, comprising a plurality of openings for receiving an instrument; for each of the openings, a sensor arrangement for detecting presence of an instrument when an instrument is received in an opening; and reporting apparatus for reporting sensing of an instrument by each respective sensor arrangement. The guide plate can be used with an imaging system, including a display for displaying an image of a portion of the body into which instruments are to be inserted. The imaging system can superimpose on the image an array corresponding to openings in the guide plate; a signal transmission means responsive to reports from respective reporting apparatus can transmit an output of the reporting apparatus to the imaging system. A display modification arrangement responsive to signals from the signal transmission means can modify elements of the array to indicate that an instrument has been inserted into a respective opening.

Claims

1. A guide plate for inserting, into a body, needles used for medical purposes, said guide plate comprising:

a plurality of openings, each opening being for receiving a needle;

for each of said openings, a sensor arrangement for detecting presence of a needle when a needle is received in an opening; and

for each of said openings, reporting apparatus for reporting sensing of a needle by each a respective sensor arrangement.

2. The guide plate of claim 1, wherein each of said sensors comprises an electromagnetic source and an electromagnetic detector responsive to energy from said source, said source and said detector being disposed so that insertion of a needle into a respective opening blocks at least a portion of energy traveling from the light source to the detector.

3. The guide plate of claim 1, wherein each of said sensors comprises an inductor, and means for detecting a change in inductance of said inductor, said inductor being disposed so that insertion of a needle into a respective opening changes inductance of said inductor.

4. The guide plate of claim 1, further comprising a first wall and a second wall, which are generally parallel to one another, and define a generally hollow space between the first wall and a second wall, the openings being defined by tubes extending from the first wall to the second wall, and a respective sensor arrangement being disposed about respective ones of said tubes.

6. The guide plate of claim 1, in combination with:

an imaging system, said imaging system including a display for displaying an image of a portion of the body into which needles are to be inserted, said imaging system having means for superimposing on said image on said display an array corresponding to openings in said guide plate;

signal transmission means responsive to reports from respective reporting apparatus for transmitting an output of said reporting apparatus to said imaging system; and

a display modification arrangement responsive to signals from said signal transmission means for modifying elements of said array to indicate that a needle has been inserted into a respective opening in said guide plate.

7. The combination of claim 6, wherein said imaging system is an ultrasonic imaging system, said ultrasonic imaging system comprising an ultrasonic probe for contacting the body to display the portion of the body where said needles are inserted.

8. The combination of claim 7, wherein said probe is a transrectal probe, and the portion of the body that is imaged includes the prostate.

9. The combination of claim 6, wherein said signal transmission means includes at least one selected from the group consisting of an electrical cable, a radio link and an infrared link.

10. The combination of claim 6, wherein said display modification arrangement changes color of a respective element of said array when a needle has been inserted into a respective opening in said guide plate.

11. The combination of claim 6, further comprising dosage calculation means for assisting in determining through which of said openings in said guide plate a needle should be placed for insertion into said body.

12. The guide plate of claim 1, shaped with a portion for receiving a transrectal probe associated with an ultrasonic imaging system, in combination with a cradle for carrying the transrectal probe and the guide plate.

13. A method for using the apparatus of claim 1, comprising the steps of:

connecting the apparatus of claim 1 to an imaging system having a capability for superimposing an array corresponding to said openings on an image of a portion of the body generated by said imaging system;

inserting successive needles in indicated ones of said openings; and

viewing modification of elements of said array as said needles are inserted to monitor which of said openings and corresponding locations in the body have needles inserted therein.

14. An imaging system for a portion of a body, comprising:

an array generator for generating an array of symbols superimposed on an image of said portion of the body;

an input for receiving data concerning which locations in the body corresponding to symbols of said array have undergone a change in status; and

means for changing an indication associated with said symbols in said array to indicate which locations in said body have undergone a change in status.

15. The system of claim 14, further comprising:

a guide plate having an array of openings corresponding to said array of symbols; and

a sensor arrangement for sensing insertion of an element into one of said openings and for providing an output indicative of said insertion; and

means for changing said indication in response to said output.

16. The system of claim 15, wherein said imaging system is an ultrasonic imaging system.

17. The system of claim 16, further comprising:

a transrectal probe for imaging a prostate;

said guide plate being disposed to guide treatment needles into the prostate.

18. A combination of components for operation with an imaging system, comprising:

a guide plate for inserting, into a body, needles used for medical purposes, said guide plate including;

a plurality of openings, each opening being for receiving a needle;

for each of said openings, a sensor arrangement for detecting presence of a needle when a needle is received in an opening; and

for each of said openings, reporting apparatus for reporting sensing of a needle by each a respective sensor arrangement; and

a sensor reading module, responsive to said reporting apparatus for providing to said imaging system, data concerning which of said openings has a needle disposed therein.

19. The combination of claim 18, wherein said data is provided to said imaging system to change an indication representative of one of said openings on a display of said imaging system, when a needle is disposed in said one of said openings.