A multi-puncture needle depth control method of a radioactive source implantation device and a multi-radioactive source stack implantation method

Abstract

This invention discloses a method for controlling the depth of multiple puncture needles in a radiation source implantation device. The operator sets a placement plan for several puncture needles on the device's interface and selects a working mode, including a single-depth working mode and a multi-depth working mode. The operator adjusts the multi-depth working mode to the single-depth working mode and inputs a set puncture depth value into the puncture depth input box to form a puncture reference depth. The radiation source implantation device then automatically adjusts the radiation source placement plan. When the original puncture depth of the puncture needle is shallower than the reference depth, the puncture depth is adjusted to the reference depth. When the original puncture depth of the puncture needle is deeper than the reference depth, the puncture depth remains unchanged. When the original puncture depth is the same as the reference depth, the puncture depth remains unchanged.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a method for controlling the depth of multiple puncture needles and a method for stacking and implanting multiple radiation sources in a radiation source implantation device. Background Technology

[0002] Radioactive particle implantation surgery involves inserting multiple radioactive particles directly into the tumor through a puncture needle for localized radiotherapy. This procedure has a wide range of indications, including lung cancer, liver cancer, breast cancer, and prostate cancer. It is characterized by small incisions, minimal bleeding, and relatively few surgical complications, while effectively inhibiting tumor growth.

[0003] The basic procedure for this surgery is as follows: First, a preoperative CT scan is taken, and the puncture path and particle placement plan are determined using the TPS system. Then, according to the plan, multiple puncture needles are inserted into the tumor. This process can be accomplished with the help of a puncture guide template, ensuring that the spacing and direction between the needles are consistent with the preoperative plan. After confirming with CT that all puncture needles have reached their target positions, the doctor then pushes multiple particles into the tumor according to the preoperative plan through the channels established by the puncture needles, completing the surgery.

[0004] To reduce radiation damage to doctors, automated radiation source implantation devices have been developed to replace manual implantation guns. These devices connect to all puncture needles that have been inserted into the tumor and can automatically push multiple particles into the tumor according to the preoperative plan.

[0005] In the preoperative planning, the implantation depth of the radioactive particles in each puncture needle is different. During the operation, the doctor needs to insert multiple puncture needles into the target position according to the preoperative plan. After the radioactive source implantation device is connected to all the puncture needles that have been punctured, the radioactive source implantation device needs to match the puncture depth of each puncture needle to implant the radioactive particles at different depths. Since the puncture depth of each puncture needle may be different, a multi-puncture needle depth control method for the radioactive source implantation device is needed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a method for controlling the depth of multiple puncture needles and a method for stacking multiple radiation sources in a radiation source implantation device, so as to solve the existing technical defects and unmet technical requirements.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A method for controlling the depth of multiple puncture needles in a radiation source implantation device involves an operator setting a placement plan for several puncture needles on the device's interface and selecting a working mode. The working modes include a single-depth working mode and a different-depth working mode. The operator adjusts the different-depth working modes to the single-depth working mode and enters the set puncture depth value in the puncture depth input box to form a puncture reference depth. Then, the radiation source implantation device automatically adjusts the placement plan of the radiation source. When the puncture depth of the original puncture needle is shallower than the reference puncture depth, the puncture depth of the puncture needle is adjusted to the reference puncture depth. When the puncture depth of the original puncture needle is deeper than the puncture reference depth, the puncture depth of the puncture needle remains unchanged. When the puncture depth of the original puncture needle is the same as the puncture reference depth, the puncture depth of the puncture needle remains unchanged.

[0008] Preferably, the radiation source implantation device is connected to the puncture needle via a delivery conduit. The delivery conduit includes an inner tube and an outer tube. The front end of the inner tube is connected to the puncture needle, and the outer tube is sleeved on the inner tube. The front end of the outer tube abuts against or connects to the target object. The rear end of the inner tube is fixedly connected to the radiation source implantation device. The radiation source implantation device is equipped with a push rod drive mechanism and a needle removal drive device. The push rod drive mechanism drives the push rod to move back and forth within the delivery conduit and the puncture needle, thereby pushing the radiation source located at the front end of the push rod along the delivery conduit and the puncture needle. The needle removal drive device drives the push rod on it to extend forward. The push rod applies a pushing force to the rear end face of the outer tube, thereby driving the inner tube and the outer tube to move relative to each other, so that the inner tube pulls the puncture needle backward. In the same depth working mode, the radiation source implantation device first drives the push rod to extend forward a distance A, which is the distance between the current puncture depth of the puncture needle and the head of the first radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward simultaneously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward a distance B, which is the distance between the tail of the first radiation source and the head of the second radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward simultaneously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward a distance C, which is the distance between the tail of the second radiation source and the head of the third radiation source. This process continues until all radiation sources are implanted. In different depth working modes, the radiation source implantation device drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by a distance B, which is the distance between the tail of the first radiation source and the head of the second radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by a distance C, which is the distance between the tail of the second radiation source and the head of the third radiation source. This process continues until all radiation sources are implanted.

[0009] Preferably, the deployment plan of the radiation source can be set manually or automatically generated directly based on the deployment plan file generated by the external TPS system. The puncture depth of all puncture needles and the implantation depth of the radiation source in the deployment plan are consistent with those in the deployment plan file generated by the external TPS system.

[0010] Preferably, the operation interface of the radiation source implantation device is provided with a radiation source placement adjustment area, which can display the placement plan of the radiation source corresponding to the selected puncture needle.

[0011] Preferably, the puncture needle pattern can be displayed in the radiation source placement adjustment area. The puncture needle pattern includes a needle body pattern, a radiation source pattern, and an interval pattern. It is possible to add a radiation source pattern, remove a radiation source pattern, add / extend an interval pattern, or remove / shorten an interval pattern at the end of the pattern sequence within the currently selected puncture needle pattern.

[0012] A method for stacking and implanting multiple radiation sources using a radiation source implantation device is disclosed. The device is connected to a puncture needle via a delivery conduit. The delivery conduit includes an inner tube and an outer tube. The front end of the inner tube is connected to the puncture needle, and the outer tube is fitted over the inner tube. The front end of the outer tube abuts against or connects to the target object. The rear end of the inner tube is fixedly connected to the radiation source implantation device. The device includes a push rod drive mechanism and a needle removal drive device. The push rod drive mechanism moves a push rod back and forth within the delivery conduit and the puncture needle, thereby placing the radiation source located at the front end of the push rod along the delivery conduit and the puncture needle. The puncture needle is pushed forward, and the needle removal drive device drives the push rod on it to extend forward. The push rod applies a pushing force to the rear end face of the outer tube, thereby driving the inner tube and the outer tube to move relative to each other, so that the inner tube pulls the puncture needle backward. In the placement plan of the radiation source, the operator sets at least one puncture needle at the same depth and the number of radiation sources stacked at the same depth, N. When the number of radiation sources stacked, N, is greater than 1, the radiation source implantation device first drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by the length of N-1 radiation sources.

[0013] Preferably, the deployment plan of the radiation source can be set manually or automatically generated directly based on the deployment plan file generated by the external TPS system. The puncture depth of all puncture needles and the implantation depth of the radiation source in the deployment plan are consistent with those in the deployment plan file generated by the external TPS system.

[0014] Preferably, the operation interface of the radiation source implantation device is provided with a radiation source placement adjustment area, which can display the placement plan of the radiation source corresponding to the selected puncture needle.

[0015] Preferably, the puncture needle pattern can be displayed in the radiation source placement adjustment area. The puncture needle pattern includes a needle body pattern, a radiation source pattern, and an interval pattern. It is possible to add a radiation source pattern, remove a radiation source pattern, add / extend an interval pattern, or remove / shorten an interval pattern at the end of the pattern sequence within the currently selected puncture needle pattern.

[0016] Preferably, the number N of radioactive sources can be set by long-pressing or clicking one of the radioactive source graphics, or by selecting one of the radioactive source graphics and then clicking the function button. When the number N of radioactive sources is greater than 1, a stacking mark will appear at the position of the radioactive source graphics.

[0017] The beneficial effects of the present invention are as follows: 1. Based on the puncture depth of multiple puncture needles, the radiation source implantation device can adopt the same depth working mode and different depth working modes. Doctors can change different working modes according to the actual situation during the operation to adapt to different surgical situations. 2. The doctor sets the depth of radioactive source implantation in each puncture needle according to the radioactive source placement and adjustment area. Radioactive sources can be stacked, and multiple radioactive sources can be implanted at the same depth to meet different treatment needs. 3. The radiation source implantation device extends forward by independently controlling the push rod and the top push rod, thereby pushing out the radiation source and pulling the puncture needle. It has a simple structure and is easy to control. Attached Figure Description

[0018] Figure 1 The control interface for the radioactive source implantation device; Figure 2 State diagram for the same depth working mode; Figure 3 State diagrams for different depth working modes; Figure 4 This is the input interface for the puncture depth in the control interface; Figure 5 This is the area for adjusting the placement of radioactive sources; Figure 6 A diagram showing the state of the radiation source being pushed to the tip of the puncture needle; Figure 7 This diagram illustrates the implantation process of a radiation source using a single puncture needle operating at the same depth. Figure 8 This diagram illustrates the process of implanting a radiation source using a single puncture needle at different depths under different operating modes. Figure 9 This diagram illustrates the process of implanting a single puncture needle with stacked radiation sources at different depths under various working modes. Figure 10 Flowchart for multi-radiation source implantation; Figure 11 The internal structure of the radiation source implantation device; Figure 12 This is a schematic diagram of the push rod structure; Figure 13 This is a schematic diagram of the push rod drive mechanism; Figure 14 This is a schematic diagram of the implantable force sensor. Figure 15 This is a schematic diagram of the structure for pushing the outer tube with a push rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 10 The radiation source implantation device is connected to the puncture needle 01 via a delivery conduit 02. The delivery conduit 02 includes an inner tube and an outer tube. The front end of the inner tube is connected to the puncture needle 01, and the outer tube is sleeved on the inner tube. The front end of the outer tube abuts against or connects to the target object. The rear end of the inner tube is fixedly connected to the radiation source implantation device. The radiation source implantation device is equipped with a push rod drive mechanism and a needle removal drive device. The push rod drive mechanism drives the push rod 03 to move back and forth within the delivery conduit 02 and the puncture needle 01, thereby pushing the radiation source 04 located at the front end of the push rod 03 along the delivery conduit 02 and the puncture needle 01. The needle removal drive device drives the push rod on it to extend forward. The push rod applies a pushing force to the rear end face of the outer tube, thereby driving the inner tube and the outer tube to move relative to each other, so that the inner tube pulls the puncture needle 01 backward and pulls it out of the target object.

[0021] A method for controlling the depth of multiple puncture needles in a radiation source implantation device involves an operator setting a placement plan for several puncture needles (01) and radiation sources (04) on the device's interface. The operator selects a working mode, including a single-depth mode and a multi-depth mode. The operator adjusts the multi-depth mode to a single-depth mode by inputting the set puncture depth value in the puncture depth input box (05) to form a puncture reference depth (07). The radiation source implantation device then automatically adjusts the radiation source placement plan. Figure 5 The interface also has a particle spacing input box 06, which is the distance between the head of the previous particle and the head of the next particle, in cm. The minimum value of this parameter is 0.5.

[0022] When the puncture depth of the original puncture needle is shallower than the reference puncture depth, the puncture depth of the puncture needle is adjusted to the reference puncture depth. When the puncture depth of the original puncture needle is deeper than the puncture reference depth, the puncture depth of the puncture needle remains unchanged. When the puncture depth of the original puncture needle is the same as the puncture reference depth, the puncture depth of the puncture needle remains unchanged.

[0023] Specifically, with Figure 2 and Figure 3 For example: Figure 3 This can be considered the operating interface before the automatic adjustment of the deployment plan of the radioactive source 04 by the radioactive source implantation device. Figure 2 The interface can be seen as the operating interface after the radioactive source implantation device automatically adjusts the deployment plan of radioactive source 04. Figure 2 The yellow dashed line in the figure represents the puncture reference depth of 0.7.

[0024] For C4 needle size puncture needles, due to... Figure 3 The puncture depth is deeper than the reference puncture depth. Therefore, after the radiation source implantation device automatically adjusts the deployment plan of radiation source 04, in... Figure 2 The puncture depth remained unchanged.

[0025] For a B3.5 needle, due to... Figure 3 The puncture depth is the same as the reference puncture depth. Therefore, after the radiation source implantation device automatically adjusts the deployment plan of radiation source 04, in Figure 2 The puncture depth remained unchanged.

[0026] For C3.5 needle size puncture needles, due to... Figure 3 The puncture depth is shallower than the reference puncture depth. Therefore, after the radiation source implantation device automatically adjusts the placement plan of radiation source 04, in... Figure 2 The puncture depth is adjusted to the reference puncture depth.

[0027] like Figure 2 In the same depth working mode, the radiation source implantation device first pulls the puncture needle 01 to the implantation depth of the first radiation source 04 according to the deployment plan of the radiation source 04. Then, the radiation source implantation device drives the push rod 03 to push the first radiation source 04 out of the puncture needle 01. Then, according to the spacing between each radiation source 04 in the deployment plan of the radiation source 04, other radiation sources 04 are implanted, and the needle is pulled out at the same time as implantation.

[0028] Specific examples Figure 7 As shown, in the same depth working mode, the radiation source implantation device first drives the push rod to extend forward a distance A, where distance A is the distance between the current puncture depth of the puncture needle and the head of the first radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward simultaneously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward a distance B, where distance B is the distance between the tail of the first radiation source and the head of the second radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward simultaneously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward a distance C, where distance C is the distance between the tail of the second radiation source and the head of the third radiation source. This process continues until all radiation sources are implanted.

[0029] like Figure 3 In different depth working modes, the radiation source implantation device directly drives the push rod 03 to push the first radiation source 04 out of the puncture needle 01, and then implants other radiation sources 04 according to the spacing between each radiation source 04 in the radiation source 04 placement plan, and removes the needle at the same time as implantation.

[0030] Specific examples Figure 8 As shown, in different depth working modes, the radiation source implantation device drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by a distance B, which is the distance between the tail of the first radiation source and the head of the second radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by a distance C, which is the distance between the tail of the second radiation source and the head of the third radiation source. This process continues until all radiation sources are implanted.

[0031] The deployment plan for the radiation source 04 can be set manually or automatically generated based on the deployment plan file generated by the external TPS system. The puncture depth of all puncture needles 01 and the implantation depth of the radiation source 04 in the deployment plan are consistent with those in the deployment plan file generated by the external TPS system.

[0032] The operation interface of the radioactive source implantation device is provided with a radioactive source placement adjustment area, which can display the placement plan of the radioactive source corresponding to the selected puncture needle 01.

[0033] The radiation source placement adjustment area can display the puncture needle graphic, which includes the needle body graphic, radiation source graphic, and interval graphic. It is possible to add a radiation source graphic, remove a radiation source graphic, add / extend an interval graphic, or remove / shorten an interval graphic at the end of the graphic sequence within the currently selected puncture needle graphic.

[0034] A method for stacking multiple radioactive sources in a radioactive source implantation device, wherein the operator sets the number N of radioactive sources stacked at the same depth in the placement plan of radioactive source 04, with at least one puncture needle 01. When the number N of radioactive sources stacked is greater than 1, the radioactive source implantation device first drives the push rod and the top push rod to extend forward synchronously by the length of one radioactive source, and then the radioactive source implantation device drives the push rod to extend forward by the length of N-1 radioactive sources.

[0035] Specific examples Figure 9 As shown, in different depth working modes, the radiation source implantation device drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by a distance B, which is the distance between the tail of the first radiation source and the head of the second radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by the length of one radiation source (N=2, N-1=1). At this time, the second and third radiation sources are stacked at the same depth. Then, the radiation source implantation device drives the push rod to extend forward by a distance C, which is the distance between the tail of the third radiation source and the head of the fourth radiation source. This process continues until all radiation sources are implanted.

[0036] In the radioactive source placement and adjustment area, by long-pressing or clicking on one of the radioactive source graphics, or by selecting one of the radioactive source graphics and then clicking the function button, the number N of radioactive source 04 stacks can be set. When the number N of radioactive source 04 stacks is greater than 1, a stacking mark will appear at the position of the radioactive source graphic. In the subsequent implantation process of the radioactive source implantation device, the radioactive source implantation device will implant multiple radioactive sources to the same depth according to the stacking number.

[0037] Multiple radiation source implantation has the following specific procedures, such as Figure 10 As shown: 1. To initiate the process, the target number of particles (equivalent to radioactive sources) to be implanted is S; 2. The radiation source implantation device drives the push rod to push the S particles into the puncture needle and pushes the first particle to the tip of the puncture needle; 3. Determine if the working mode is a uniform depth mode (equivalent to the same depth working mode). If so, the radiation source implantation device first drives the push rod to extend forward a set distance, which is the distance between the current puncture depth of the puncture needle and the head of the first particle, so as to pull the puncture needle to the implantation depth of the first particle. Then, the radiation source implantation device drives the push rod and the push rod to extend forward simultaneously by the length of one particle to achieve the implantation of the first particle. If not, the radiation source implantation device drives the push rod and the push rod to extend forward simultaneously by the length of one particle. 4. Target quantity S = Target quantity S - 1. Determine if the target quantity S is greater than 0. If yes, determine if the next particle should be stacked. If no, the process ends and the radioactive source implantation device completes the implantation operation. 5. When determining whether the next particle is stacked, if yes, the radiation source implantation device drives the push rod to extend forward by the length of one particle, the top push rod remains stationary, only the particle is implanted, and then continue to step 4; if no, continue to step 3 and perform the corresponding operation in the unified depth mode.

[0038] like Figures 11 to 15 The radiation source implantation device includes: a motion platform 24010, a push rod drive mechanism 24012, and a docking nozzle 24050. The push rod drive mechanism 24012 and the docking nozzle 24050 are installed at corresponding positions within the motion platform 24010. Power is transmitted through a docking shaft structure, and electrical signals are transmitted through a conductive structure. The docking nozzle 24050 is vertically installed on the front end face of the motion platform 24010. The push rod drive mechanism 24012 is parallel to or inclined at a certain angle to the front end face of the motion platform 24010. The push rod drive mechanism 24012 is equipped with a radiation source magazine. The flexible conduit 24016 is connected to the docking nozzle 24050. The docking nozzle 24050 is installed in the motion platform 24010 through the front and rear movement module 24052 to enable the docking nozzle 24050 to move back and forth and dock with different delivery conduits on the docking plate. After docking, the push rod drive mechanism 24012 drives the flexible push rod through the radioactive source magazine, thereby pushing out the radioactive source in the radioactive source magazine, and then pushing the radioactive source located at the front end of the flexible push rod. The radioactive source is pushed into the delivery conduit through the docking nozzle 24050 and implanted into the target position through the puncture needle connected to the end of the delivery conduit.

[0039] The push rod drive mechanism 24012 drives the flexible push rod to push through a friction wheel or friction belt.

[0040] The forward and backward motion module 24052 is one or a combination of a lead screw and nut mechanism, an electric push rod, and a gear and rack mechanism.

[0041] The motion platform 24010 is rotatably mounted on the frame of the radiation source implantation device. The motion platform 24010 is driven to rotate by the drive source, and in conjunction with the front and rear motion modules 24052, the docking nozzle 24050 is controlled to dock with different delivery tubes on the docking plate.

[0042] like Figure 12 and Figure 15 The docking nozzle 24050 is provided with a needle removal drive device 201 on its side. The delivery catheter includes an inner tube 022 and an outer tube 021. The front end of the inner tube 022 is connected to the puncture needle. The outer tube 021 is sleeved on the inner tube 022. The front end of the outer tube 021 abuts or connects to the target object. The tail end of the inner tube 022 is installed on the docking plate of the radiation source implantation device. The push rod 202 of the needle removal drive device 201 directly applies a pushing force to the rear end face of the outer tube 021, thereby driving the inner tube 022 and the outer tube 021 to move relative to each other, so that the inner tube 022 pulls the puncture needle 01 out of the target object.

[0043] Specifically, the push rod drive mechanism 24012 drives the flexible push rod to push the target number of radiation sources into the puncture needle along the inner tube. When the tip of the first radiation source of the multiple radiation sources reaches the designated position of the puncture needle, the flexible push rod stops pushing. When the radiation source implantation device is started, the flexible push rod pushes the first radiation source at the inner front end of the puncture needle out of the needle tip. At the same time, the push rod drives the inner tube and the outer tube to move relative to each other, so that the inner tube pulls the puncture needle out of the target object by the target distance.

[0044] The end of the push rod 202 near the outer tube 021 is equipped with a needle pulling force sensor 203. When the push rod 202 pushes the outer tube 023, the needle pulling force sensor 203 detects the magnitude of the needle pulling force of the push rod 202.

[0045] like Figure 13 and Figure 14A quick-connect pipe 2401601 is fixedly connected to the end of the flexible pipe 24016 near the push rod drive mechanism 24012. A quick-connect seat 2401602 is provided on one side of the push rod drive mechanism 24012. The quick-connect pipe 2401601 can be quickly installed on the quick-connect seat 2401602 and communicates with the internal channel of the push rod drive mechanism 24012. This quick-installation structure is at least one of a threaded connection structure, a snap-fit ​​connection structure, and a locking connection structure. The quick-connect seat 2401... 602 is mounted on the push rod drive mechanism 24012 or motion platform 24010 via the implanted force sensor 2401603. The quick-connect fitting 2401602 is fixedly connected to the force-measuring end of the implanted force sensor 2401603. The implanted force sensor 2401603 is mounted on the push rod drive mechanism 24012 or motion platform 24010 via the connecting plate 2401604. The force-measuring direction of the implanted force sensor 2401603 is parallel to the axial direction of the end of the quick-connect fitting. When the flexible... When the flexible push rod encounters resistance during the delivery of the radiation source, it will move the flexible tube 24016 forward. The delivery force of the flexible push rod (i.e., the implantation force) can be detected by the implantation force sensor 2401603. The quick-connect tube 2401601 is equipped with a damping section to prevent the radiation source from returning to the push rod drive mechanism. The damping section is a soft rubber tube 2401605. When the radiation source clip is installed in the push rod drive mechanism 24012, the soft rubber tube... 2401605 can be made of materials with a high coefficient of friction, such as silicone, latex, and rubber. When the radioactive source is pushed out of the radioactive source magazine by the flexible push rod and passes through the soft rubber tube 2401605, the flexible push rod retracts. If the pipeline is tilted downwards, the radioactive source will be stuck in the soft rubber tube 2401605 due to the high coefficient of friction of the soft rubber tube 2401605 when it retracts along the pipeline under the action of gravity. This prevents the radioactive source from retracting into the radioactive source magazine and causing abnormal discharge of the radioactive source magazine.

[0046] Alternatively, the damping section can be replaced by a pipe with internal frosted material, or a pipe with internal elastic damping blocks or elastic damping rings.

[0047] Furthermore, the soft rubber tube 2401605 is elastic, and the inner diameter of the soft rubber tube 2401605 is smaller than the outer diameter of the flexible push rod. The soft rubber tube 2401605 is an elastic tube. When the flexible push rod finishes delivery and retracts into the push rod drive mechanism 24012, the soft rubber tube 2401605 can scrape off the bloodstains attached to the outer surface of the flexible push rod to achieve cleaning.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for controlling the depth of multiple puncture needles in a radiation source implantation device, characterized in that: The operator sets the placement plan of several puncture needles on the operation interface of the radiation source implantation device, and selects the working mode on the operation interface. The working modes include the same depth working mode and different depth working mode. The operator adjusts the different depth working mode to the same depth working mode, and forms the puncture reference depth by entering the set puncture depth value in the puncture depth input box. Then the radiation source implantation device automatically adjusts the placement plan of the radiation source. When the puncture depth of the original puncture needle is shallower than the reference puncture depth, the puncture depth of the puncture needle is adjusted to the reference puncture depth. When the puncture depth of the original puncture needle is deeper than the puncture reference depth, the puncture depth of the puncture needle remains unchanged. When the puncture depth of the original puncture needle is the same as the puncture reference depth, the puncture depth of the puncture needle remains unchanged.

2. The method for controlling the depth of multiple puncture needles in a radiation source implantation device according to claim 1, characterized in that, The radiation source implantation device is connected to the puncture needle via a delivery conduit. The delivery conduit includes an inner tube and an outer tube. The front end of the inner tube is connected to the puncture needle, and the outer tube is sleeved on the inner tube. The front end of the outer tube abuts against or connects to the target object. The rear end of the inner tube is fixedly connected to the radiation source implantation device. The radiation source implantation device is equipped with a push rod drive mechanism and a needle removal drive device. The push rod drive mechanism drives the push rod to move back and forth within the delivery conduit and the puncture needle, thereby pushing the radiation source located at the front end of the push rod along the delivery conduit and the puncture needle. The needle removal drive device drives the push rod on it to extend forward. The push rod applies a pushing force to the rear end face of the outer tube, thereby driving the inner tube and the outer tube to move relative to each other, so that the inner tube pulls the puncture needle backward. In the same depth working mode, the radiation source implantation device first drives the push rod to extend forward a distance A, which is the distance between the current puncture depth of the puncture needle and the head of the first radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward simultaneously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward a distance B, which is the distance between the tail of the first radiation source and the head of the second radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward simultaneously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward a distance C, which is the distance between the tail of the second radiation source and the head of the third radiation source. This process continues until all radiation sources are implanted. In different depth working modes, the radiation source implantation device drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by a distance B, which is the distance between the tail of the first radiation source and the head of the second radiation source. Then, the radiation source implantation device drives the push rod and the push rod to extend forward synchronously by the length of one radiation source. Then, the radiation source implantation device drives the push rod to extend forward by a distance C, which is the distance between the tail of the second radiation source and the head of the third radiation source. This process continues until all radiation sources are implanted.

3. The method for controlling the depth of multiple puncture needles in a radiation source implantation device according to claim 1, characterized in that, The deployment plan for the radioactive source can be set manually or automatically generated directly based on the deployment plan file generated by the external TPS system. The puncture depth of all puncture needles and the implantation depth of the radioactive source in the deployment plan are consistent with those in the deployment plan file generated by the external TPS system.

4. The method for controlling the depth of multiple puncture needles in a radiation source implantation device according to claim 3, characterized in that, The operation interface of the radioactive source implantation device is equipped with a radioactive source placement adjustment area, which can display the placement plan of the radioactive source corresponding to the selected puncture needle.

5. The method for controlling the depth of multiple puncture needles in a radiation source implantation device according to claim 4, characterized in that, The radiation source placement adjustment area can display the puncture needle graphic, which includes the needle body graphic, radiation source graphic, and interval graphic. It is possible to add a radiation source graphic, remove a radiation source graphic, add / extend an interval graphic, or remove / shorten an interval graphic at the end of the graphic sequence within the currently selected puncture needle graphic.

6. A method for stacking and implanting multiple radiation sources in a radiation source implantation device, characterized in that, The radioactive source implantation device is connected to the puncture needle via a delivery conduit. The delivery conduit includes an inner tube and an outer tube. The front end of the inner tube is connected to the puncture needle, and the outer tube is sleeved on the inner tube. The front end of the outer tube abuts against or connects to the target object, and the rear end of the inner tube is fixedly connected to the radioactive source implantation device. The radioactive source implantation device is equipped with a push rod drive mechanism and a needle removal drive device. The push rod drive mechanism drives the push rod to move back and forth within the delivery conduit and the puncture needle, thereby pushing the radioactive source located at the front end of the push rod along the delivery conduit and the puncture needle. The needle removal drive device drives the push rod on it to extend forward. The push rod applies a pushing force to the rear end face of the outer tube, thereby driving the inner tube and the outer tube to move relative to each other, so that the inner tube pulls the puncture needle backward. In the radioactive source placement plan, the operator sets at least one puncture needle at the same depth and the number of radioactive sources stacked at the same depth as N. When the number of radioactive sources stacked at N is greater than 1, the radioactive source implantation device first drives the push rod and the push rod to extend forward synchronously by the length of one radioactive source, and then the radioactive source implantation device drives the push rod to extend forward by the length of N-1 radioactive sources.

7. The method for stacking and implanting multiple radiation sources in a radiation source implantation device according to claim 6, characterized in that, The deployment plan for the radioactive source can be set manually or automatically generated directly based on the deployment plan file generated by the external TPS system. The puncture depth of all puncture needles and the implantation depth of the radioactive source in the deployment plan are consistent with those in the deployment plan file generated by the external TPS system.

8. The method for stacking and implanting multiple radiation sources in a radiation source implantation device according to claim 7, characterized in that, The operation interface of the radioactive source implantation device is equipped with a radioactive source placement adjustment area, which can display the placement plan of the radioactive source corresponding to the selected puncture needle.

9. The method for stacking and implanting multiple radiation sources in a radiation source implantation device according to claim 8, characterized in that, The radiation source placement adjustment area can display the puncture needle graphic, which includes the needle body graphic, radiation source graphic, and interval graphic. It is possible to add a radiation source graphic, remove a radiation source graphic, add / extend an interval graphic, or remove / shorten an interval graphic at the end of the graphic sequence within the currently selected puncture needle graphic.

10. The method for stacking and implanting multiple radiation sources in a radiation source implantation device according to claim 9, characterized in that, By long-pressing or clicking on one of the radioactive source graphics, or by selecting one of the radioactive source graphics and then clicking the function button, you can set the number N of radioactive sources to be stacked. When the number N of radioactive sources to be stacked is greater than 1, a stacking mark will appear at the position of the radioactive source graphics.

Images