Needle to port trajectory indicator

• US 9,047,708 B2
• Filed: 11/04/2013
• Issued: 06/02/2015
• Est. Priority Date: 09/20/2007
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Kalpin, Scott L.
• Primary Examiner(s): MEDWAY, SCOTT J
• Application Number:
  US14/070,665
• Publication Number:
  US 20140058327A1
• Time in Patent Office: 575 Days
• Field of Search: 128/901, 128/903, 607/39, 607/50, 607/62, 607/40, 607/55, 607/60, 604/17, 604/29, 604/30, 604/31, 604/32, 604/36
• US Class Current: 1/1
• 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 2034/107 Visualisation of planned trajectories or target regions
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: A61M 2039/0238 having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers
• CPC Class Codes: A61M 2205/3523 using telemetric means
• CPC Class Codes: A61M 2209/045 for filling, e.g. for filling reservoirs
• CPC Class Codes: A61M 5/14276 specially adapted for implantation
• CPC Class Codes: A61M 5/427 Locating point where body is to be pierced, e.g. vein location means using ultrasonic waves, injection site templates
• CPC Class Codes: G06T 11/206 Drawing of charts or graphs

Abstract

A system includes (i) a needle for insertion into a port of an implantable infusion device, and (ii) a receiver apparatus having a port location signal receiver module capable of receiving a signal from the implantable infusion device regarding spatial orientation of the port. The system further includes a processor operably coupled to the receiver apparatus and capable of determining the orientation of the needle relative to the port based on the received signal. The system also includes a display operably coupled to the processor. The processor is configured to cause the display to graphically render trajectory of the needle relative to the port. The port is graphically rendered as a target structure having a reference area. The needle is graphically rendered as an object moveable relative to the target structure. Occupation of the reference area by the object indicates trajectory alignment of the port and the needle.

Claims

1. A method comprising:

determining the orientation of a port of an implantable infusion device relative to a needle for insertion into the port, wherein the port has an axis defining a target trajectory for the needle and wherein the needle has a longitudinal axis;

displaying a trajectory of the needle relative to the port by graphically rendering the axis of the port as a target structure having a reference area and by graphically rendering the longitudinal axis of the needle as an object moveable relative to the target structure;

updating the graphical rendering of the longitudinal axis of the needle as the needle is being inserted into the port,

wherein occupation of the reference area by the object indicates trajectory alignment of the axis of the port and the longitudinal axis of the needle.

2. The method of claim 1, wherein displaying relative alignment of the needle with the port further comprises graphically rendering one or more target trajectory reticules demarcating defined tilt errors.

3. The method of claim 2, wherein graphically rendering one or more target trajectory reticules demarcating defined tilt errors comprises graphically rendering the reticules as concentric circles, wherein the reference area comprises the center of the concentric circles.

4. A non-transitory computer-readable medium containing instructions that when implemented cause a needle alignment medical device system to:

process information from a signal transmitted from an implantable infusion device regarding the location of a port of the infusion device, the port having an axis defining a target trajectory for a needle;

determine the orientation of the needle relative to the port based on the information from the transmitted signal, wherein the needle has a longitudinal axis; and

graphically render trajectory of the needle relative to the port, wherein the axis of the port is graphically rendered as a target structure having a reference area and the longitudinal axis of the needle is graphically rendered as an object moveable relative to the target structure;

updating the graphical rendering of the longitudinal axis of the needle as the needle is being inserted into the port,

wherein occupation of the reference area by the object indicates trajectory alignment of the axis of the port and the longitudinal axis of the needle.

5. A system for aligning a needle with a port of an implantable infusion device, the port having an axis defining a target trajectory for the needle and the needle having a longitudinal axis, the system comprising:

a receiver apparatus having a port location signal receiver capable of receiving a signal from the implantable infusion device regarding spatial orientation of the port, wherein the receiver apparatus is configured to be fixed relative to the longitudinal axis of the needle as the needle is being inserted into the port;

a processor operably coupled to the receiver apparatus and capable of determining the orientation of the axis of the needle relative to the axis of the port based on the received signal; and

a display operably coupled to the processor,

wherein the processor is configured to cause the display to graphically render a trajectory of the needle relative to the port, wherein the axis of the port is graphically rendered as a target structure having a reference area and the axis of the needle is graphically rendered as an object moveable relative to the target structure, wherein the processor is configured to update the graphical rendering of the axis of the needle as the needle is being inserted into the port, and wherein occupation of the reference area by the object indicates trajectory alignment of the port and the needle.

6. The system of claim 5, further comprising the implantable infusion device, wherein the implantable infusion device has a location signaling module capable of transmitting the signal regarding the orientation of the port.

7. The system of claim 5, wherein processor is further configured to cause the display to graphically render one or more target trajectory reticules demarcating defined tilt errors representing predetermined angular differences between the axis of the port and the axis of the needle.

8. The system of claim 7, wherein the trajectory reticules are concentric circles and wherein the reference area comprises the center of the concentric circles.

9. The system of claim 8, wherein at least a first and a second reticule are demarcated and a region is defined between the first and second reticule, the region representing between 5 degrees and 10 degrees of tilt error.

10. The system of claim 5, wherein at least a portion of the port location signal receiver module is disposed in a housing of the receiver apparatus, and wherein the display is disposed on or exposed through a surface of the housing.

11. The system of claim 10, wherein the processor is disposed in the housing.