Device for image guided automated insertion of an elongated hollow needle to a desired location in an animal body for effecting radiation therapy of cancerous tissue
The invention relates to a device for image guided automated insertion of an elongated an elongated hollow needle to a desired location in an animal body for effecting radiation therapy of cancerous tissue in said body comprising needle positioning means for positioning said needle having a distal end and a proximal end relative to said desired location; needle drive means for driving said needle with its distal end towards said desired location; and real time imaging means for creating and presenting an image of said desired location and the position of the distal end of said needle during insertion of said needle. It is an object of the invention to provide a device for inserting a needle in an animal body, wherein a better access to the treatment site in the patient's body is obtained thus improving the possibilities in configuring a treatment plan for said patient and wherein the patient is suffering lesser trauma, bleeding and discomfort. According to the invention these objects are met as the device is arranged for performing subsequent insertions using only one single needle, wherein the needle drive means are arranged for retracting said single needle from said desired location, and wherein said needle positioning means are arranged for repositioning said single needle relative to a subsequent desired location prior to a subsequent insertion.
1. Device for image guided automated insertion of an elongated hollow needle to a desired location in an animal body for effecting radiation therapy of cancerous tissue in said body comprising:
needle positioning means for positioning said needle having a distal end and a proximal end relative to said desired location;
needle drive means for driving said needle with its distal end towards said desired location; and
real time imaging means for creating and presenting an image of said desired location and the position of the distal end of said needle during insertion of said needle;
wherein
the device is arranged for performing subsequent insertions using only one single needle, wherein
the needle drive means are arranged for retracting said single needle from said desired location until the distal end of said needle arrives at a pivoting point, and wherein
said needle positioning means are arranged for repositioning said single needle relative to a subsequent desired location prior to a subsequent insertion by pivoting said needle around said pivoting point while said distal end of said needle is maintained in the pivoting point.
2. A device according to claim 1 , wherein said pivoting point is located inside said animal body.
3. A device according to claim 1 , wherein said pivoting point is located outside said animal body.
4. A device according to claim 1 , wherein said pivoting point is located at skin level of said animal body.
5. A device according to claim 4 , wherein said needle insertion means comprise a guidance channel having a proximal end and distal end for accommodating said single needle.
6. A device according to claim 5 , wherein said needle positioning means comprise a robotic system connected to said guidance channel.
7. A device according to claim 1 , wherein the proximal end of said single elongated hollow needle is connected to an after loading apparatus.
8. A device according to claim 7 , wherein the proximal end of said single elongated hollow needle is connected to an after loading apparatus by means of a flexible catheter tube.
9. A device according to claim 7 , wherein the after loading device is a radioactive seed loading apparatus, a HDR, PDR or LDR-device.
10. A device according to claim 7 , wherein the after loading device is connected to the robotic system of the needle positioning means.
11. A device according to claim 1 , wherein said single elongated hollow needle has an open distal end.
12. A device according to claim 1 , wherein said single elongated hollow needle has a closed distal end.
13. A device according to claim 1 , wherein said single elongated hollow needle is made of a non-ferromagnetic material.
14. A device according to claim 13 , wherein said non-ferromagnetic material is a titanium-zirconium alloy.
15. A device according to claim 1 , wherein the real time imaging means are ultrasound imaging means.
16. A device according to claim 1 , wherein the real time imaging means are magnetic resonance imaging means.
17. A device according to claim 1 , wherein the real time imaging means are computer tomography imaging means.