Rectal balloon with radiation sensor and/or markers
DCFirst Claim
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1. A prostate immobilizing rectal balloon, said rectal balloon comprising:
- a. a flexible shaft having a fluid passageway extending therethrough and having a distal end and a proximal end,b. a balloon having an upper surface, a bottom surface, a distal end near said distal end of said shaft and a proximal end that is affixed to the proximal end of said shaft, such that said fluid passageway communicates with an interior of said balloon,c. wherein said balloon comprises a top layer connected to a bottom layer to form said balloon,d. said balloon further comprising a middle layer extending between said top layer and said bottom layer, wherein said middle layer is connected to said top layer to form a groove overlying said shaft and making said upper surface generally flattened as compared with said bottom surface,e. wherein said balloon has a non-inflated condition,f. wherein said balloon has an inflated condition, wherein said groove has depth and forms a central seating area that is configured to engage with a prostate, andg. said balloon further comprising i) a radiation sensor in said groove for determining radiation dose from an external beam radiation device, or ii) one or more fiducial markers, or iii) both of i) and ii).
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Abstract
A rectal balloon apparatus has a shaft with a fluid passageway extending therethrough. A balloon is affixed over an end of the shaft such that the fluid passageway communicates with an interior of the balloon. The balloon has a laterally flat surface thereon when inflated. The laterally flat surface of the balloon has a longitudinal groove formed thereon. The balloon has a radiation sensor positioned within the groove and a plurality of fiducial markers positioned on a surface of the balloon. A stopper is slidably mounted on the shaft.
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Citations
9 Claims
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1. A prostate immobilizing rectal balloon, said rectal balloon comprising:
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a. a flexible shaft having a fluid passageway extending therethrough and having a distal end and a proximal end, b. a balloon having an upper surface, a bottom surface, a distal end near said distal end of said shaft and a proximal end that is affixed to the proximal end of said shaft, such that said fluid passageway communicates with an interior of said balloon, c. wherein said balloon comprises a top layer connected to a bottom layer to form said balloon, d. said balloon further comprising a middle layer extending between said top layer and said bottom layer, wherein said middle layer is connected to said top layer to form a groove overlying said shaft and making said upper surface generally flattened as compared with said bottom surface, e. wherein said balloon has a non-inflated condition, f. wherein said balloon has an inflated condition, wherein said groove has depth and forms a central seating area that is configured to engage with a prostate, and g. said balloon further comprising i) a radiation sensor in said groove for determining radiation dose from an external beam radiation device, or ii) one or more fiducial markers, or iii) both of i) and ii). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification