A dual double balloon catheter includes a catheter having a proximal end portion, a central portion and a distal end portion, and a secondary treatment balloon for a catheter. The catheter includes a plurality of lumens within the catheter extending from the proximal end portion, a plurality of inflatable balloons positioned in the central portion and a secondary treatment balloon communicatively associated with the distal end portion of the catheter, and the balloons and the secondary treatment balloon being communicatively connected with a corresponding one of the plurality of lumens to selectively inflate/deflate the corresponding inflatable balloon or to receive a radioactive dose or a therapeutic agent for a treatment.

A multi-purpose balloon catheter includes a catheter having a proximal end portion, a central portion and a non-branching distal end portion, a plurality of lumens associated with the catheter extending from the proximal end portion, and a plurality of inflatable balloons positioned in the central portion and/or the non-branching distal end portion. Each of the plurality of inflatable balloons is communicatively associated with a corresponding one of the plurality of lumens, the plurality of inflatable balloons being selectively inflated or deflated to position and stabilize the catheter in a cavity for delivery of a medical treatment. The catheter can include an extraction point associated with a lumen to remove fluids and materials from the cavity, and a connector associated with a corresponding lumen adapted to selectively receive one or more of a fluid medium or a radioactive isotope provided to a corresponding lumen for delivery of the medical treatment.

Provided in the present invention is a three-dimensional precise intracavitary radiotherapy method and system for treating tumours, comprising the steps of: (1) lesion three-dimensional quantitative measurement and analysis of three-dimensional scanning image of the lesion cavity; (2) comprehensive analysis according to lesion three-dimensional quantitative measurement results and lesion characteristics to calculate the three-dimensional distribution of lesion radiation dose; and (3) according to the three-dimensional distribution diagram of radiation dose, selecting appropriate radiation sources and radiation dose to make a stent, and performing three-dimensional precise intracavitary radiotherapy. At the same time, also provided by the present invention is a system for achieving the above radiotherapy method. The present invention uses modern medical imaging three-dimensional reconstruction technology for realizing three-dimensional precise internal radiotherapy to treat tumours with an optimized radiation dose and protect normal tissues to an extreme.

A dual double balloon catheter includes a catheter having a proximal end portion, a central portion and a distal end portion. The catheter includes a plurality of lumens within the catheter extending from the proximal end portion, and a plurality of inflatable balloons positioned in the central portion and/or the distal end portion, and the balloons being communicatively connected with a corresponding one of the plurality of lumens to selectively inflate/deflate the corresponding inflatable balloon, wherein one or more of inflatable balloons further includes a second one of the plurality lumens associated with a corresponding inner wall of a corresponding inflatable balloon and adapted to receive a radioactive dose or a therapeutic agent for a treatment. The plurality of balloons can have varying sizes in relation to each other and also include lumens within or associated with the inner walls of the balloons to deliver a treatment.

A method of treatment including: selecting tissue to be exposed to radiation for gradual closure of one or more blood vessel within the tissue to be exposed radiation; selecting radiation levels to promote gradual constriction of the one or more vessel; exposing the tissue to be exposed radiation to selected radiation levels.

This disclosure provides design, material, manufacturing method, and use alternatives for medical devices. An example medical device includes a stent having a first strut. The first strut may include an inner surface and an outer surface. The medical device may also include a first attachment member coupled to the strut and a radioactive element. The radioactive element may be coupled to the attachment member.

The disclosure describes devices and methods for asymmetrical irradiation at a body cavity or site, such as after removal of tissue, e.g. biopsy or cancer. One device includes a lumen which is off-set or off-settable from a longitudinal axis to increase the intensity of radiation received from a radiation source by a first tissue portion surrounding the body cavity and to reduce or minimize radiation received by a second tissue portion (e.g. healthy tissue) surrounding the body cavity.

According to one general aspect, there is a multi-balloon catheter for medical applications that includes a multi-balloon inflator that inflates multiple balloons on a single catheter, an extraction point used to remove human fluids from the human body, and a connecting point that allows a syringe or a machine to insert air or any other liquid, such as a liquid saline solution, for inflation of a corresponding balloon of the multiple balloons or insert radioactive isotopes into the multi-balloon inflator.

Exemplary brachytherapy applicators may include an interstitial tube having a body with a proximal end and a distal end and a central conduit extending from the distal end of the body, wherein the central conduit includes a proximal opening, a distal opening, and a channel extending from the proximal opening to the distal opening, and wherein the proximal opening is offset from an axis of the body. The proximal opening may be configured to fluidly connect to a brachytherapy guide tube, and the channel of the central conduit may be dimensioned to receive at least one of a needle or a catheter therethrough.

A catheter treatment apparatus comprises an elongate tubular member and an expandable support. The expandable support comprises a radioactive substance to treat cancerous tissue and is configured to expand from a narrow profile for insertion to a wide profile to engage and treat tissue remaining after resection. The expandable support can be sized to fit within a volume of removed tissue to place the radioactive substance in proximity to the capsule and remaining tissue, to spare the capsule and proximate nerves and vessels to treat tissue in proximity to the capsule. The elongate tubular member may comprise a channel such as a lumen to pass a bodily fluid such as urine when the expandable support engages the tissue to treat the patient for a plurality of days. The treatment apparatus can be used to resect and diagnose tissue concurrently. Based on the diagnosis, targeted segmental treatment may be given.