WO2023099847A1 - Dispositif de chargement et de poussee de grains radioactifs - Google Patents
Dispositif de chargement et de poussee de grains radioactifs Download PDFInfo
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- WO2023099847A1 WO2023099847A1 PCT/FR2022/052212 FR2022052212W WO2023099847A1 WO 2023099847 A1 WO2023099847 A1 WO 2023099847A1 FR 2022052212 W FR2022052212 W FR 2022052212W WO 2023099847 A1 WO2023099847 A1 WO 2023099847A1
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- loading
- grain
- radioactive
- cable
- branch
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1027—Interstitial radiation therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00547—Prostate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
- A61N2005/1009—Apparatus for loading seeds into magazines or needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
- A61N2005/101—Magazines or cartridges for seeds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N2005/1019—Sources therefor
- A61N2005/1023—Means for creating a row of seeds, e.g. spacers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N2005/1019—Sources therefor
- A61N2005/1024—Seeds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1055—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using magnetic resonance imaging [MRI]
Definitions
- the present disclosure relates to a radioactive seed loading and pushing device, as well as a brachytherapy treatment device comprising a radioactive seed loading and pushing device and a flexible catheter which extends to to a hollow needle.
- Such a treatment apparatus finds particular application for brachytherapy treatment with guidance under magnetic resonance imaging (MRI) assistance, and for example brachytherapy treatment of the prostate.
- MRI magnetic resonance imaging
- the present disclosure also relates to brachytherapy equipment by magnetic resonance imaging guidance comprising an imaging scanner comprising a magnet and a magnet tunnel, as well as a brachytherapy apparatus for which the needle is positioned inside the magnet tunnel; while the grain loading and pushing device according to the present disclosure is external to said magnet tunnel.
- the present disclosure relates to the field of devices used in therapies based on radioactivity. More particularly, the present disclosure relates to a device for loading and pushing radioactive seeds.
- the devices involved in therapies based on the use of radioactivity must generally comply with a certain number of constraints, in particular when they are used in combination with imaging systems such as MRI, scanners or yet ultrasound used to provide treatment guidance.
- imaging systems such as MRI, scanners or yet ultrasound used to provide treatment guidance.
- they in addition to the fact that they must be compatible with the imaging system used, they must also have a certain reliability in their use. Indeed, a reliability problem can lead to delays harmful in a patient's treatment protocol, or even delay the number of patients who can be treated, for example.
- brachytherapy is an internal radiotherapy technique in which the radiation source is introduced directly into the tumor or in close proximity to it by means of a catheter.
- sources of irradiation are generally placed, and they can consist of one or more radioactive grains, for example grains of iodine 125, Palladium Pd103, intraprostatic fiducial or positioning markers.
- document US Pat. No. 7,578,781 B2 describes a device for loading radioactive grains from a reservoir of free grains.
- the radioactive grains are released, one by one, in a downstream branch splitting at its proximal end into two upstream branches.
- the first upstream branch includes a pointed cable configured to puncture the tissues up to the area to be treated while blocking the possible release of a radioactive seed in the downstream branch.
- the second upstream branch comprises a cable making it possible to push the radioactive grain released into the downstream branch after removal of the pointed cable.
- a coil on which is wound a radioactive chain composed of radioactive grains and spacers (non-radioactive) between grains, alternately on the length of the chain, ensuring determined spacings between the consecutive grains of the radioactive chain
- a push system comprising a push cable, motorized, the push cable (then retracted) and the distal end of the chain then initially respectively arranged in two upstream guide branches, the two upstream branches joining after their junction in in a downstream branch forming a loading area,
- Such a loading and pushing device operates as follows: the chain is actuated, unwound by a portion of length corresponding to the number of grains to be inserted, at the level of the cutting system, then the portion of length is cut from the rest of the radioactive chain by the cutting system
- the severed grain chain is pushed by the unwinding of the grain coil as far as the downstream branch, then the radioactive chain (not severed) is wound up so as to free the junction, leaving the portion of severed chain in the Loading Zone.
- the push cable is then deployed so as to push the grain chain portion from the loading area to the processing area.
- Such a device makes it possible to insert into the zone to be treated several radioactive grains of the chain of radioactive grains spaced apart from each other by bio-absorbable spacers.
- Such a loading and pushing device has certain disadvantages, in particular linked to the use of a chain of grains which is more difficult to obtain than free grains.
- the spacers physically come to permanently determine the spacing between grains, which generates a lack of flexibility of the device when other spacings are desired for the treatment.
- Document US2004/0162458 A1 also discloses a brachytherapy needle loading device, from a first grain cartridge radioactive, and a second cartridge of spacers which are both in communication with a pre-loading chamber of the device.
- Such a device is configured to load the needle with a train formed of radioactive grains and spacers between grains when the needle is rigidly connected to a connection of the loading device.
- the hollow needle needs to be removed from the loading device, before its use for surgical deposits, namely seeds and spacers in the tissues of the patient's prostate, operations which can be carried out either manually by a practitioner, or even by automated means. In all cases, these automated means are separate from the pre-loading device which is not configured for this operation.
- the drive and guiding device comprising a first actuator and a guiding system for the pushing cable comprising a downstream branch forming the loading zone for the radioactive seed and an upstream branch, extending the downstream branch to a proximal end of the downstream branch, the upstream branch inside which a push end of the push cable is configured to retract, in a retracted position of the thrust,
- the upstream branch is a first upstream branch, the system ensuring the loading of a grain from the grain reservoir to the loading area including:
- downstream branch extending at its proximal end by splitting into said first upstream branch and said second upstream branch and in which the grain tank opens into the second branch, upstream, at the level of a zone of pre-loading a grain
- an actuation device comprising a second actuator and a thrust member configured to pass from a retracted initial position, beyond the proximal end, releasing the pre-loading zone by authorizing the exit of a seed from the grain tank in the second branch to a deployed position for which said thrust member moves the radioactive grain from the pre-loading zone to the loading zone by preventing the exit of a grain from the grain tank in the pre-loading area,
- control unit configured for, from the retracted position of the push cable and the retracted initial position of the push member:
- such provisions limit the risk of the push cable snagging or jamming, thus guaranteeing high reliability of the loading and pushing device.
- This increase in reliability guarantees a patient's treatment schedule as well as the number of patients to be treated.
- treatment zone it may be understood a zone comprising the tissues (e.g. biological tissues) of the patient to be treated.
- tissues e.g. biological tissues
- the device for loading and pushing radioactive seeds is fixed, while the hollow needle is movable, mobile for example by means of a robot, thanks to the flexible catheter which allows a freedom of movement between the hollow needle, mobile, and the device for loading and pushing radioactive seeds, fixed.
- the grain tank is a cartridge, removable, and in which the second branch comprises, at the level of the reloading zone, a lateral (in particular upper) opening as well as a support configured to securing the cartridge, removably, at the side opening.
- the loading and pushing device can be supplied with radioactive grains in a simple, fast and efficient manner, requiring no dismantling of the device and its own settings.
- the thrust member is a straight rod, and in which:
- downstream branch and the first upstream branch form a bend between them.
- the system for loading grain from the grain reservoir to the loading area includes a sensor targeting the loading area configured to detect a presence in the loading area , the detector emitting a signal at the input of the control unit, and in which .in /a/, the control unit is configured to ensure the displacement of the grain by the pushing member from the preloading zone to to the detection of grain by the detector in the loading area.
- the detector makes it possible to detect the presence of grain in the loading zone before activating the thrust member.
- control unit is configured to determine the initial position of the thrust member, at least in an initialization mode, by:
- the second actuator comprises a motor, as well as a transmission comprising a gear comprising a toothed wheel driven by the motor, and a rack integral with the thrust member.
- a cable detector targets a detection zone in said first branch and in which the control unit is configured to determine the retracted position of the push cable, at least in a mode of 'initialization, for which the first actuator moves the pushing cable until the detection of the pushing end by the cable detector, namely that the cable is advanced if the latter is not initially detected, or on the contrary receded if detected initially.
- the first actuator comprises a pair comprising a motorized roller and a pressure roller between which the push cable is clamped.
- a second pair comprises a roller coupled to a measuring means such as an incremental encoder and a second pressure roller between which the push cable is pinched.
- a system for adjusting the pressure of the first and second pressure roller comprising a first support for the first pressure roller and a second support for the second pressure roller articulated one to the other around a hinge axis, as well as a screw clamping system connecting the first support and the second support.
- the loading device comprises upstream of the first upstream branch a system for accumulating the push cable in the retracted position comprising a rigid sheath for the push cable, the sheath shaped according to a helicoid.
- Computer program comprising program code instructions for the execution of the steps of the method of the loading and pushing device according to the present disclosure when said program is executed on a computer.
- brachytherapy apparatus comprising a device for loading and pushing radioactive seeds according to the present disclosure and a flexible catheter which extends to a hollow needle, the catheter extending one end distal of the downstream branch of the device loading and wherein the push cable is configured to push the radioactive seed from the loading area to a tip of the hollow needle.
- hollow needle or needle
- rigid hollow needle or a controllable hollow needle such as that described in the document WO201 5/153174 for example.
- the device comprises a radioactive head removably coupled to the end of the push cable by means of attachment, the cable being configured to be deployed by the first actuator until the radioactive end extends beyond the tip of the hollow needle.
- the brachytherapy treatment apparatus further includes a guide assist configured to guide insertion of the hollow needle into the area to be treated and to guide deposition of at least a grain
- said guiding assistance comprising a guiding robot configured to be coupled with an imaging device, said guiding robot being configured to be placed within or near the imaging device and being further configured to move the hollow needle, and inserting it into the area to be treated, said imaging device being configured to visualize the movement and the insertion of the hollow needle into the area to be treated, as well as the deposition of the radioactive seed.
- the guiding robot can be further configured to be compatible with said imaging device when said imaging device uses magnetic field values between 0 and 5 Tesla.
- magnetic resonance imaging guidance brachytherapy equipment comprising an imaging scanner comprising a magnet and a magnet tunnel; as well as a brachytherapy device according to the present disclosure for which the needle is positioned inside the tunnel of the magnet; whereas the device for loading and pushing grains is external to said tunnel of the magnet.
- the visualization may correspond to the visualization of a video stream comprising a set of images obtained by the imaging device.
- the loading of at least the radioactive seed can also be carried out before the insertion of the hollow needle into the tissues of the patient.
- FIG. 1 schematically illustrates a loading and pushing device in one or more embodiments.
- FIG. 2a shows a partial sectional view of the device 100 along the plane
- FIG. 2b shows a partial sectional view of the device 100 along the plane
- FIG. 3a [Fig. 3b]; [Fig. 3c], [Fig. 3d] and [Fig. 3e] schematically illustrate the method of loading a radioactive seed into the loading zone of the device 100.
- FIG. 4 illustrates a device for implementing the method of the present disclosure.
- FIG. 5 is a sectional view of an apparatus according to the present disclosure comprising a loading and pushing device, a catheter and a hollow needle, the downstream branch of the device extended by the flexible catheter, which extends to the hollow needle, allowing guidance of the needle into the patient by magnetic resonance imaging (MRI), the hollow needle positioned in a magnet tunnel of the MRI scanner magnet while the loading and pushing device ; shown in Figure 1 is external to the tunnel.
- MRI magnetic resonance imaging
- FIG. 1 schematically illustrates a loading and pushing device in one or more embodiments.
- the loading and pushing device 100 may comprise a mobile support 103, for example a table positioned near the patient and the medical imaging device, comprising the different parts of the device 100 described below.
- the mobile support can be, for example, located close to an imaging system (eg MRI, scanner, etc.) used to monitor the placement of radioactive seeds in an area to be treated, for example following brachytherapy.
- an imaging system eg MRI, scanner, etc.
- the device 100 can comprise a pushing cable 120 included, at least partially in a protective casing, for example in the form of a rigid sheath 123.
- the push cable can be associated with an accumulation system based on a helical shape of the rigid sheath, thus ensuring great compactness of the push cable in the retracted position.
- the rigid helical sheath is linked and secured, at least in a few local positions, to the mobile support 103, in particular secured to the upper surface of the table forming the mobile support 103.
- the push cable can be made of metal such as a titanium, nickel or stainless steel alloy, or of composite or any other material compatible for operation within a control system.
- imaging such as MRI or a scanner, or compatible with imaging systems using magnetic field values between 0 and 5 Teslas.
- the movement and guidance of the push cable 120 can be ensured by means of a motorized guidance and drive device 130 included in the device 100 and a control unit 160 making it possible to control the movement of the cable 120.
- the control unit 160 can be located at a distance from the motorized guidance and drive device and communicate with the device 100 via a telecommunications network (eg wifi, Bluetooth, 4G/5G, etc.), or even wired. Alternatively, the control unit 160 is directly integrated into the device 100.
- device 100 can be connected to a catheter 150 (partially shown) configured to allow delivery of a radioactive seed pushed, through the catheter, by push cable 120 to the area of processing (not shown).
- Figures 2a and 2b respectively show a partial sectional view of the device 100 along the XY and XZ planes.
- the guide and drive device 130 of the push cable 120 may include a first actuator 220 allowing the movement of the cable 120.
- This first actuator may include a pair of rollers of pressure 220a1; 220a2/drive roller 220b pinching the push cable, the latter being moved by friction between the rollers 220a1; 220a2/220b driven by a motor (e.g. piezoelectric motor, servomotor, stepper motor, etc. .) coupled to one of the rollers 220a1; 220a2.
- a motor e.g. piezoelectric motor, servomotor, stepper motor, etc. .
- the guide and drive device may further comprise a measuring roller 220c in correspondence with one of the pressure rollers 220a1; 220a2, the measuring roller being coupled to a means of measurement (e.g. incremental encoder) (not shown) making it possible to determine a value of the length of the unwound pushing cable.
- a means of measurement e.g. incremental encoder
- the pressure of the pressure rollers 220a1; 220a2 can be configured via a pressure adjustment system.
- the adjustment system may comprise a first support 221a for the first pressure roller 220a1 and a second support 221b for the second pressure roller 220a2 hinged to each other around a hinge pin 221c, and adjusted by means of a screw clamping system 221 d connecting the first support to the second support.
- the value of the tightening torque exerted on the first and the second support can be included in a torque value range of 0.2 to 3 Nm-1.
- the device 100 can comprise one or more guides 220d in order to route the push cable in complete safety towards the guide system which comprises a downstream branch 223 forming the loading zone for a radioactive grain and an upstream branch 225) which can be defined as a first upstream branch.
- the upstream branch (or first upstream branch) can be configured so as to extend the downstream branch 223 at a proximal end, and allow the retraction of the push cable according to a retracted position, thus freeing the loading zone for the loading of a grain radioactive.
- the retraction of the push cable is made possible by the use of the accumulation system located before downstream of the first upstream branch.
- the retracted position of the push cable can be determined by means of a cable detector 220e configured to detect the presence of the end of the push cable in the first upstream branch or following a zone located in the first upstream branch.
- the device 100 can comprise a second upstream branch 230a and a grain detector 230b targeting the zone loading, the grain detector being configured to detect a presence (e.g. a radioactive grain) in the loading zone.
- a presence e.g. a radioactive grain
- first upstream branch 225 and the second upstream branch 230a are formed from the splitting of the downstream branch 223 at its proximal end, and the second upstream branch can comprise a preloading zone 245 into which opens, via a side opening, the radioactive grain tank.
- the downstream branch 223 and the second upstream branch 230a can extend straight, the downstream branch 223 and the first upstream branch 225 can then form a bend between them.
- the value of the angle of the elbow can be comprised in a range of values going from 10 to 45 degrees.
- the of thrust can pass from a retracted initial position, beyond the proximal end of the downstream branch, making it possible to release the pre-loading zone 245 for the loading of a radioactive grain to a deployed position making it possible to bring the radioactive grain released from the pre-loading zone to the loading zone 223 included in the downstream branch.
- the thrust member may be a rectilinear metal rod such as a titanium, nickel or stainless steel alloy, or a composite, or any material suitable for functioning within imaging system such as MRI or scanner.
- the second actuator 250 can be constituted by a motor 250a as well as a transmission comprising a gear, such as for example a toothed wheel 250b and a rack 250c which is integral with the thrust member 255.
- the drive of the toothed wheel by the motor thus makes it possible to move the thrust member 255 forwards or backwards.
- the different elements (or parts) included in the device 100 as described above can be compatible to operate within imaging systems, such as scanners, MRIs or systems imaging to perform ultrasounds.
- imaging systems such as scanners, MRIs or systems imaging to perform ultrasounds.
- the various elements included in the device 100 can be compatible to operate under a magnetic field having values in Tesla of between 0 and 5 Tesla.
- the various elements included in the device 100 can be compatible to operate under a magnetic field having values in Tesla between 0 and 3 Tesla.
- Figures 3a to 3e schematically illustrate the method of loading a radioactive seed into the loading zone of the device 100.
- the push cable can be in a retracted position and the push member can also be in a retracted initial position so as to release the different channels, i.e. upstream branches and downstream branch, and allowing radioactive seed to be loaded into the loading area.
- No radioactive grain is therefore present in the loading zone and the control unit can then receive an input signal of non-detection of radioactive grain by the grain detector targeting the loading zone in the downstream branch.
- a radioactive seed 300 can be released (e.g. by gravity or spring by the control unit or manually) 310a in the pre-loading zone included in the second upstream branch 230a, and the control unit 160 can then be configured to :
- the radioactive grain 300 can be advanced by the thrust member until it is detected 310e in the loading zone by the grain detector 230b. Once the grain detector detects the passage of the grain in the loading zone, the radioactive grain can be advanced by the pusher until the beginning of the entrance of the catheter 150.
- an initialization mode 320a can be activated before any loading of radioactive grain in the pre-loading zone of so as to determine the initial retracted position of the thrust member, the control unit can be configured to determine this position (at least in an initialization mode) by:
- the actual position of the thrust member in the loading zone can be determined by one or more round trips within the loading zone 223.
- an initialization mode can be activated 320a to determine the retracted position of the push cable.
- This initialization mode may be the same as that activated for determining the initial retracted position of the thrust member or may be a different initialization mode.
- the control unit can be configured to actuate 330a the first actuator allowing the displacement of the push cable until the detection 330b of its (distal) push end by the cable detector.
- control unit 160 advances the cable if the latter is not detected initially, and until its distal end is detected, the signal of the cable detector passing from a non-detection to a detection when the the distal end is in the field of the detector.
- control unit backs up the cable if the cable is detected initially until the cable detector 230b no longer detects a cable at a position immediately adjacent to the position of the distal end, the signal from the detector going from detection to non-detection.
- the push cable 255 can be retracted by a few millimeters (eg between 2 and 10 millimeters) so as to be in a waiting position before loading grain.
- Figure 4 illustrates a control unit 160 for implementing the method of the present disclosure.
- control unit 160 may comprise a computer 401, this computer comprising a memory 402 for storing program instructions which can be loaded into a circuit, and capable of causing the circuit 403 to execute the method of the present disclosure when the program instructions are handled by circuit 403.
- the memory 402 can also store data and information useful for carrying out the method of the present description as described above.
- the circuit 403 can be for example:
- processor or processing unit capable of interpreting instructions in a computer language
- the processor or processing unit may include, be associated with or be attached to a memory comprising the instructions, or
- processors / processing unit the combination of a processor / processing unit and a memory, the processor or the processing unit suitable for interpreting instructions in a computer language, the memory comprising said instructions, or
- programmable electronic chip such as an FPGA chip (for “Field-Programmable Gate Array”).
- This computer can include an input interface 405 for receiving input data and an output interface 407 for sending signals, for example commands.
- the input interface may receive input data such as a grain detection signal in the loading zone sent by the grain detector.
- the input interface can also receive, for example, a detection signal sent by the cable detector.
- the output interface can, for example, send signals so as to drive the various actuators of the loading and pushing device.
- a brachytherapy device comprising a device for loading and pushing radioactive seeds 100 according to the present disclosure and a flexible catheter 150 which extends to a hollow needle 501, the catheter 150 extending a distal end of the downstream branch 223 of the loading device.
- the push cable is configured to push the radioactive seed from the loading area to at least one tip of the hollow needle, and to deposit the seed at the tip into the tissues of the patient.
- the device for loading radioactive seeds OO can remain fixed, while the hollow needle 501 is movable, mobile, thanks to the flexible catheter which allows freedom of movement between the hollow needle 501, mobile, and the device of loading radioactive grains 100.
- This needle is intended to be inserted into the treatment zone, for example at the level of the prostate, in one or more target positions, which are typically determined beforehand in a treatment program.
- such insertion of the needle and the deposits of the seeds can be operated by a guidance assistance using an imaging device T (e.g. allowing real time) such as for example an imaging magnetic resonance (MRI), as well as a guide robot 515 (or a remote-controlled arm).
- an imaging device T e.g. allowing real time
- MRI imaging magnetic resonance
- guide robot 515 or a remote-controlled arm
- the guide robot or the remote-controlled arm can be configured to move and insert the hollow needle at different locations in the area to be treated, so as to deposit radioactive seeds at different positions in the area. to treat (e.g. prostate).
- to treat e.g. prostate
- the guide robot or the remote-controlled arm can be installed inside or close to the imaging device, and can be configured to move along the three axes X, Y, Z and rotate around each axis.
- Proximity can mean a distance of between 1 and 2 meters from the imaging device.
- the guide robot or the teleguide arm 515 can also be configured to be compatible with imaging devices, that is to say configured to operate within or near (e.g. between 1 or 2 meters) from an imaging system such as an MRI or a scanner, or within or near (e.g. between 1 or 2 meters) imaging systems using magnetic field values between 0 and 5 Tesla.
- imaging devices that is to say configured to operate within or near (e.g. between 1 or 2 meters) from an imaging system such as an MRI or a scanner, or within or near (e.g. between 1 or 2 meters) imaging systems using magnetic field values between 0 and 5 Tesla.
- the hollow needle, the catheter (in part) and the guide robot are internal to the imaging device, while the loading and pushing device is remote from the imaging device, in a distant position, and so as to avoid interference.
- brachytherapy equipment by magnetic resonance imaging (MRI) guidance comprising an MRI imaging scanner comprising a magnet and a magnet tunnel T; as well as a brachytherapy device according to the present disclosure for which the guide robot 515 as well as the hollow needle 501 are positioned inside the tunnel of the magnet T; while grain loading and pushing device 100 is external to said magnet tunnel.
- MRI magnetic resonance imaging
- the hollow needle and the catheter are internal to the tunnel of the magnet, while the loading and pushing device is at a distance from the tunnel, in a remote position , and so as to avoid interference.
- the present disclosure finds particular application for low dose rate (FDD) or low radiation rate (FDR) brachytherapy treatments, the radioactive seeds implanted by the push cable administering low radiation for a duration of treatment , typically for several hours or a few days.
- FDD low dose rate
- FDR low radiation rate
- the push cable of device 100 may be coupled to a radioactive end.
- This radioactive end is detachably coupled to the end of the cable by means of attachment.
- This cable being deployed by the first actuator, preferably by MRI guidance assistance, and until the radioactive end passes the tip of the hollow needle.
- the radioactive tip is left in the treatment area to deliver a high dose of radiation for a short time, typically on the order of one or more minutes.
- First actuator (Guiding and driving device),
- 250a, 250b, 250c. respectively motor, toothed wheel and rack
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
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Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22834690.4A EP4440693A1 (fr) | 2021-12-01 | 2022-12-01 | Dispositif de chargement et de poussee de grains radioactifs |
| US18/715,351 US20250018222A1 (en) | 2021-12-01 | 2022-12-01 | Device for loading and pushing radioactive seeds |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2112809A FR3129601A1 (fr) | 2021-12-01 | 2021-12-01 | Dispositif de chargement et de poussée de grains radioactifs |
| FRFR2112809 | 2021-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023099847A1 true WO2023099847A1 (fr) | 2023-06-08 |
Family
ID=80933924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2022/052212 Ceased WO2023099847A1 (fr) | 2021-12-01 | 2022-12-01 | Dispositif de chargement et de poussee de grains radioactifs |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250018222A1 (fr) |
| EP (1) | EP4440693A1 (fr) |
| FR (1) | FR3129601A1 (fr) |
| WO (1) | WO2023099847A1 (fr) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0836502A1 (fr) * | 1996-04-04 | 1998-04-22 | Novoste Corporation | Traitement radique du systeme vasculaire |
| US20020058854A1 (en) * | 2000-11-14 | 2002-05-16 | Reed Jay C. | Device for loading radioactive seeds |
| US20040162458A1 (en) | 2000-03-09 | 2004-08-19 | Green Thomas C. | Methods and apparatus for loading radioactive seeds into brachytherapy needles |
| US7118523B2 (en) | 2002-02-06 | 2006-10-10 | Eckert & Ziegler Eurotope Gmbh | Device and method for loading hollow implantation needles with chains of radiation sources for interstitial brachytherapy of tissue |
| US7578781B2 (en) | 2003-09-18 | 2009-08-25 | Wisconsin Alumni Research Foundation | Device for placement of needles and radioactive seeds in radiotherapy |
| US20140303423A1 (en) * | 2011-10-18 | 2014-10-09 | Koninklijke Philips N.V. | Medical apparatus for displaying the catheter placement position |
| WO2015153174A1 (fr) | 2014-04-02 | 2015-10-08 | Intuitive Surgical Operations, Inc. | Dispositifs, systèmes et procédés utilisant un stylet orientable et une aiguille souple |
-
2021
- 2021-12-01 FR FR2112809A patent/FR3129601A1/fr not_active Ceased
-
2022
- 2022-12-01 WO PCT/FR2022/052212 patent/WO2023099847A1/fr not_active Ceased
- 2022-12-01 US US18/715,351 patent/US20250018222A1/en active Pending
- 2022-12-01 EP EP22834690.4A patent/EP4440693A1/fr not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0836502A1 (fr) * | 1996-04-04 | 1998-04-22 | Novoste Corporation | Traitement radique du systeme vasculaire |
| US20040162458A1 (en) | 2000-03-09 | 2004-08-19 | Green Thomas C. | Methods and apparatus for loading radioactive seeds into brachytherapy needles |
| US20020058854A1 (en) * | 2000-11-14 | 2002-05-16 | Reed Jay C. | Device for loading radioactive seeds |
| US7118523B2 (en) | 2002-02-06 | 2006-10-10 | Eckert & Ziegler Eurotope Gmbh | Device and method for loading hollow implantation needles with chains of radiation sources for interstitial brachytherapy of tissue |
| US7578781B2 (en) | 2003-09-18 | 2009-08-25 | Wisconsin Alumni Research Foundation | Device for placement of needles and radioactive seeds in radiotherapy |
| US20140303423A1 (en) * | 2011-10-18 | 2014-10-09 | Koninklijke Philips N.V. | Medical apparatus for displaying the catheter placement position |
| WO2015153174A1 (fr) | 2014-04-02 | 2015-10-08 | Intuitive Surgical Operations, Inc. | Dispositifs, systèmes et procédés utilisant un stylet orientable et une aiguille souple |
Also Published As
| Publication number | Publication date |
|---|---|
| US20250018222A1 (en) | 2025-01-16 |
| EP4440693A1 (fr) | 2024-10-09 |
| FR3129601A1 (fr) | 2023-06-02 |
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