CN-224207241-U - Electron beam radiotherapy beam needle and radiotherapy device

CN224207241UCN 224207241 UCN224207241 UCN 224207241UCN-224207241-U

Abstract

The utility model discloses an electron beam radiotherapy beam needle which comprises a transmission body, a scattering body and a light source, wherein a first channel for transmitting electron beams is arranged in the transmission body, one end part of the first channel is an incident end part, the other end part of the first channel is an emergent end part, the scattering body is arranged at the emergent end part of the first channel to block the electron beams, and the scattering body scatters the electron beams towards the direction of the area where the scattering body is arranged. The electron beam radiation therapy beam needle can concentrate electron beam energy to the vicinity of the area where the scatterer is located. The utility model discloses a radiotherapy device, which comprises any one of the electron beam radiotherapy beam current needles and a beam current source, wherein the beam current source is used for providing electron beams, and is arranged at the incident end part of a transmission body. The radiotherapy device adopts the electron beam radiotherapy beam needle, and can realize radiotherapy with concentrated electron beam energy.

Inventors

WANG JINGHUI
GAI WEI
ZHU KUN
YAN XUEQING

Assignees

广东省新兴激光等离子体技术研究院
北京大学

Dates

Publication Date: 20260508
Application Date: 20250529

Claims (10)

1. An electron beam radiation therapy beam needle, comprising: A transmission body, wherein a first channel for transmitting electron beams is arranged in the transmission body, one end part of the first channel is an incident end part, and the other end part of the first channel is an emergent end part; And the scatterer is arranged at the emergent end part of the first channel so as to block the electron beam, and scatters the electron beam towards the direction of the area where the scatterer is positioned.
2. The electron beam radiotherapy beam needle of claim 1, wherein the first channel and the scatterer are both linear, and the first channel and the scatterer are arranged in a same direction in an extending manner and coaxially.
3. The electron beam radiation therapy beam needle of claim 1, wherein the scatterer is made of a solid material and has a density ρ of 0.8g/cm 3 ≤ρ≤1.2g/cm 3 .
4. The electron beam radiotherapy beam needle of claim 1 wherein the length of the scatterer corresponds to the energy of the electron beam, wherein the scatterer has a length of L1, the energy of the electron beam has an energy of E, l1=0.5e, wherein the unit of length is cm, and the unit of energy of the electron beam is MeV.
5. The electron beam radiotherapy beam needle of claim 1, wherein the transmission body is of a cylindrical tubular structure, the scattering body is of a cylindrical columnar structure, the outer diameter of the transmission body is phi 1, the inner diameter of the transmission body is phi 2, the diameter of the scattering body is phi 3, phi 1 is more than phi 2, phi 1 = phi 3, the value range of phi 1 is 1mm-5mm, and the value range of phi 2 is 0.5mm-4mm; And/or the length of the transmission body is L2, and the value range of L2 is 6cm-20cm.
6. The electron beam radiotherapy beam needle of claim 1, wherein the incident end of the first channel is positioned at one end of the transmission body, the incident end of the first channel is provided with an opening, and a connector is arranged on the transmission body near the incident end of the first channel; the emergent end part of the first channel is positioned at the other end part of the transmission body, the emergent end part of the first channel is provided with an opening, or the transmission body is provided with a vacuum window at the emergent end part of the first channel.
7. A radiotherapy apparatus comprising an electron beam radiotherapy beam needle according to any of claims 1 to 6, and further comprising a beam source for providing an electron beam, the beam source being disposed at an incident end of the transport body.
8. The radiotherapy device of claim 7, wherein the radiotherapy device further comprises a protection body, the protection body is of a tubular structure, at least one second channel for penetrating the electron beam radiotherapy beam needle is arranged in the protection body, one end of the second channel is provided with an opening, the other end of the second channel is closed, the protection body is sleeved outside the electron beam radiotherapy beam needle through the opening of the protection body, and the protection body is movably connected with the electron beam radiotherapy beam needle through the second channel.
9. The radiotherapy apparatus of claim 8, wherein said shielding body is a needle, and said shielding body is provided with said second channel; The radiotherapy device further comprises a guide plate, a plurality of third channels used for penetrating the electron beam radiotherapy beam needle are arranged on the guide plate, openings are formed in two end parts of the third channels, the third channels are arranged along the transverse direction and the longitudinal direction, and the guide plate is movably connected with the electron beam radiotherapy beam needle through the third channels; The guide plate is provided with the protection body at the position of the third channel, the second channel is communicated with the corresponding third channel, and the electron beam radiotherapy beam needle passes through the third channel and is inserted into different depths corresponding to the second channel.
10. The radiotherapy apparatus of claim 8, wherein the shielding body is an applicator, a plurality of second channels are arranged on the shielding body, the second channels are arranged at the center and the periphery of the shielding body, and the electron beam radiotherapy beam needles are inserted into the second channels at different depths; And/or the protection body comprises a first pipe body and a second pipe body which are connected with each other, the second channel positioned in the center of the protection body extends from the first pipe body to the second pipe body, and a plurality of second channels positioned on the periphery of the protection body are arranged in the second pipe body; and/or the outer diameter of the first pipe body is phi 4, the outer diameter of the second pipe body is phi 5, and phi 4 is less than phi 5; And/or, the first pipe body and the second pipe body are both linear, and the first pipe body and the second pipe body extend in the same direction and are coaxially arranged.

Description

Electron beam radiotherapy beam needle and radiotherapy device Technical Field The utility model relates to the technical field of medical instruments, in particular to an electron beam radiotherapy beam needle and a radiotherapy device. Background Brachytherapy technology has undergone a transition from early Low Dose Rate (LDR) brachytherapy to High Dose Rate (HDR) brachytherapy, and has gradually introduced new technologies such as electronic brachytherapy (eBT). However, the above treatment techniques mainly rely on X-rays or gamma-rays, and use corresponding applicators (rectal cancer applicators, cervical cancer applicators, prostate cancer insertion needles) to control the distribution of the dose to the target area of the human body to kill the tumor. X-rays and gamma rays penetrate deeply, and the existing radiotherapy equipment is poor in conformality, so that unavoidable irradiation damage can be caused to surrounding healthy tissues, and toxic and side effects are generated. Disclosure of utility model In order to overcome the defects in the prior art, one of the purposes of the utility model is to provide an electron beam radiotherapy beam needle, wherein a first channel is arranged in a transmission body and is used for transmitting electron beams, a scatterer is arranged at the emergent end part of the first channel to block the electron beams, and the scatterer scatters the electron beams towards the direction of the area where the scatterer is located, so that the electron beam radiotherapy beam needle can concentrate the energy of the electron beams to the vicinity of the area where the scatterer is located. Another object of the present utility model is to provide a radiotherapy apparatus which can realize radiotherapy with relatively concentrated electron beam energy. One of the purposes of the utility model is realized by adopting the following technical scheme: An electron beam radiation therapy beam needle comprising: the electron beam transmission device comprises a transmission body, wherein a first channel for transmitting electron beams is arranged in the transmission body, one end part of the first channel is an incident end part, and the other end part of the first channel is an emergent end part; and the scatterer is arranged at the emergent end part of the first channel to block the electron beam, and scatters the electron beam towards the direction of the area where the scatterer is positioned. In some embodiments, the first channel and the diffuser are both linear, and the first channel and the diffuser are disposed in a co-directional extension and coaxial arrangement. In some embodiments, the diffuser is made of a solid material and has a density ρ of 0.8g/cm 3≤ρ≤1.2g/cm3. In some embodiments, the length of the scatterer corresponds to the energy of the electron beam, wherein the scatterer has a length L1, the energy of the electron beam has an energy E, l1=0.5e, wherein the length has a unit of cm, and the energy of the electron beam has a unit of MeV. In some embodiments, the transmission body is in a cylindrical tubular structure, the scattering body is in a cylindrical columnar structure, the outer diameter of the transmission body is phi 1, the inner diameter of the transmission body is phi 2, the diameter of the scattering body is phi 3, phi 1> phi 2, phi 1 = phi 3, the value range of phi 1 is 1mm-5mm, and the value range of phi 2 is 0.5mm-4mm; And/or the length of the transmission body is L2, and the value range of L2 is 6cm-20cm. In some embodiments, the incident end of the first channel is located at one end of the transmission body, the incident end of the first channel has an opening, and the transmission body is provided with a connector near the incident end of the first channel; The emergent end part of the first channel is positioned at the other end part of the transmission body, the emergent end part of the first channel is provided with an opening, or the transmission body is provided with a vacuum window at the emergent end part of the first channel. The second purpose of the utility model is realized by adopting the following technical scheme: The radiotherapy device comprises the electron beam radiotherapy beam needle of any one of the above, and further comprises a beam source for providing electron beams, wherein the beam source is arranged at the incident end part of the transmission body. In some embodiments, the radiotherapy device further comprises a protection body, the protection body is of a tubular structure, at least one second channel used for penetrating the electron beam radiotherapy beam needle is arranged in the protection body, one end of the second channel is provided with an opening, the other end of the second channel is closed, the protection body is sleeved outside the electron beam radiotherapy beam needle through the opening of the protection body, and the protection body is movably connected with the electron beam radiotherapy