Supporting assembly for supporting delivery catheter and radioactive source implantation system

Abstract

The utility model discloses a support assembly for supporting a delivery catheter and a radioactive source implantation system, the support assembly comprises a support main frame and at least one support sub-frame arranged on the support main frame, the support main frame and / or the support sub-frame can realize pose or shape adjustment, the support sub-frame is used for supporting the delivery catheter, and the support sub-frame is used for supporting the delivery catheter. The conveying catheter is prevented from drooping, so that the conveying catheter is prevented from pulling a puncture needle connected with the front end to damage a target object; the radioactive source implanting system comprises a sleeve type radioactive source implanting device and a supporting assembly, the sleeve type radioactive source implanting device comprises a radioactive source implanting host and a conveying catheter, the supporting assembly is used for supporting the conveying catheter, and the rear end of the conveying catheter is connected with an output port of the radioactive source implanting host. The radioactive source implanting host drives the radioactive source to enter the target object along the conveying catheter. The supporting device is used for supporting different flexible conveying catheters in the operation process so as to adapt to puncture needles with different distances and angles.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially a support assembly for supporting a delivery catheter and a radioactive source implantation system. BACKGROUND

[0002] Radioactive particle implantation surgery is a kind of local radiotherapy by directly implanting many radioactive particles into a tumor through puncture. This surgery has a wide range of indications, including lung cancer, liver cancer, breast cancer, prostate cancer, etc. It has small incisions, less bleeding, and relatively fewer surgical complications, but it can effectively inhibit the growth of tumors.

[0003] The basic process of this surgery is to first take a preoperative CT and determine the puncture path and particle arrangement scheme in the TPS system, and then insert many puncture needles into the tumor according to the plan. This process can be completed with the help of a puncture guide template to ensure that the spacing and direction of the needles are consistent with the preoperative plan. After confirming by CT that all the puncture needles have reached the target position, the doctor pushes multiple particles into the tumor according to the preoperative plan through the channel established by the puncture needle, completing the surgery.

[0004] In order to reduce the harm of radiation to doctors, an automatic radioactive source implantation device is used to complete the radioactive particle implantation surgery. During the radioactive source implantation process, a flexible delivery catheter is used to connect the radioactive source implantation device and the corresponding puncture needle, thereby guiding the implantation of the radioactive source. The radioactive source output by the radioactive source implantation device enters the target object through the flexible delivery catheter and the puncture needle connected at the front end. The flexible delivery catheter includes an inner tube and an outer tube. Taking a cannula type needle pulling mechanism and its use method with publication number CN118286612A as an example, it includes an inner tube, an outer tube, and a needle pulling driving mechanism. The outer tube is sleeved outside the inner tube. The front end of the inner tube is connected to the puncture needle inserted into the target object. The front end of the outer tube abuts against or is connected to the target object. During use, the front end of the outer tube remains relatively stationary with the target object and can support the puncture needle from being pulled. The target object includes biological tissue, a base, a puncture guide template, etc. The needle pulling driving mechanism is used to adjust the relative position of the inner tube and the outer tube. The inner tube and the outer tube can move relative to each other under the action of the needle pulling driving mechanism, so that the puncture needle moves away from the target object and is pulled out of the target object.

[0005] However, the flexible delivery catheter is relatively soft, and without support, the flexible delivery catheter will sag and bend greatly, thereby pulling the puncture needle connected at the front end and causing damage to the target object. Therefore, a support assembly is needed to support the flexible delivery catheter. SUMMARY

[0006] The purpose of this invention is to provide a support component for supporting a delivery catheter and a radiation source implantation system, so as to solve the existing technical defects and unmet technical requirements.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A support assembly for supporting a delivery catheter includes a main support frame and at least one support subframe disposed on the main support frame. The main support frame and / or the support subframe are capable of position or shape adjustment. The support subframe is used to support the delivery catheter to prevent the delivery catheter from sagging, thereby preventing the delivery catheter from pulling on the puncture needle connected to its front end and causing damage to the target object.

[0009] Preferably, the main support frame and several supporting sub-frames form a tree-like structure, and each supporting sub-frame includes a connecting end connected to the main support frame and a free end corresponding to the connecting end.

[0010] Preferably, the delivery conduit is mounted on a support frame, which supports the delivery conduit to prevent it from sagging; or the support frame is equipped with a suspension component, which suspends the delivery conduit from sagging. The suspension component is one or a combination of tape, cable tie, and shackle.

[0011] Preferably, the support frame has multiple needle tube limiting blocks distributed from its connecting end side to its free end side. When the delivery tube is placed on the support frame, the delivery tube is embedded in the needle tube limiting blocks, thereby achieving support for the delivery tube.

[0012] Preferably, the support frame has multiple adhesive layers distributed from its connecting end side to its free end side. When the delivery conduit is placed on the support frame, the delivery conduit is attached and fixed to the adhesive layers, thereby achieving support for the delivery conduit.

[0013] Preferably, the support frame includes a forked plate, on which a plurality of forked rods are fixedly connected. The forked rods are arranged horizontally and neatly on the forked plate. One end of each forked rod is fixedly connected to the forked plate, and the other end of each forked rod is fixedly connected to a stop block. Each conveying conduit is placed on the corresponding forked rod. The distance between the forked rods is 20-100 mm, the length of each forked rod is 400-800 mm, the number of forked rods is 3-10, and the distance between the forked rods is equal.

[0014] Preferably, the main support frame and / or the supporting sub-frame are universal tubes, corrugated tubes, or hollow metal tubes, and the posture adjustment is achieved by bending and shaping the main support frame and / or the supporting sub-frame themselves; or the main support frame and / or the supporting sub-frame are universal tubes, corrugated tubes, or flexible tubes, and the main support frame and / or the supporting sub-frame are provided with metal wires, and the bending and shaping of the main support frame and / or the supporting sub-frame is achieved by bending and shaping the metal wires; or the main support frame and / or the supporting sub-frame are provided with several hinges, ball joints, or telescopic rods, and the posture or shape adjustment of the main support frame and / or the supporting sub-frame is achieved by rotation and / or translation.

[0015] Preferably, when the main support frame and the supporting sub-frame adopt a hinge structure, the main support frame includes a first support rod and a second support rod. Hinges are provided between the first support rod and the main body of the radiation source implantation device, between the first support rod and the second support rod, and between the second support rod and the supporting sub-frame. The axes of the three sets of hinge structures are all arranged horizontally and are parallel to each other. The position of the supporting sub-frame in space is controlled by the three sets of hinge structures, and the support position of the delivery conduit is adjusted.

[0016] The hinge structure includes a first hinge block and a second hinge block, and the first hinge block and the second hinge block are connected by a screw knob. The tightness of the first hinge block and the second hinge block can be adjusted by rotating the screw knob in both directions. The opposite sides of the first hinge block and the second hinge block are respectively provided with a first tooth structure and a second tooth structure that can mesh with each other. The first tooth structure and the second tooth structure mesh with each other, which can improve the support rigidity of the hinge structure.

[0017] Preferably, the support frame is fitted with a disinfection isolation cover to separate the sterile environment from the sterile environment. The shape of the disinfection isolation cover is adapted to the shape of the support frame. The disinfection isolation cover has a corresponding number of branched cavities. Each support frame or branch of the support frame can be inserted into the corresponding cavity, thereby achieving a more conformal wrapping.

[0018] A radiation source implantation system with a support component includes a support component and a cannula-type radiation source implantation device. The cannula-type radiation source implantation device includes a radiation source implantation host and a delivery conduit. The rear end of the delivery conduit is connected to the output port of the radiation source implantation host. The radiation source implantation host drives the radiation source to enter the target object along the delivery conduit.

[0019] The delivery catheter includes an inner tube and an outer tube. The outer tube is sleeved outside the inner tube. The front end of the inner tube is connected to the puncture needle inserted into the target object, and the front end of the outer tube abuts against or is connected to the target object.

[0020] The cannula-type radiation source implantation device also includes a needle removal drive mechanism, which drives the inner tube and the outer tube to move relative to each other, so that the puncture needle moves away from the target object and is pulled out of the target object.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. The main support frame and / or the sub-support frame can achieve position or shape adjustment, control the position of the sub-support frame in space, adjust the support position of the delivery tube, and support the flexible delivery tube through the sub-support frame; prevent the delivery tube from sagging, thereby preventing the delivery tube from pulling on the puncture needle connected to its front end and causing damage to the target object; and effectively prevent the flexible delivery tube and the puncture needle connected to its front end from bending too much, resulting in delivery blockage;

[0023] 2. The main support frame and several supporting subframes form a tree-like structure, or several branch rods are fixedly connected to the branch plates of the supporting subframes to support different flexible delivery catheters during the operation, so as to accommodate puncture needles at different distances and angles.

[0024] 3. The disinfection isolation cover can separate the sterile delivery tubing from the sterile support frame, ensuring that the flexible delivery tubing is not contaminated. The shape of the disinfection isolation cover is adapted to the support frame, achieving a more conformal wrapping and more stable installation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0026] Figure 2 This is a schematic diagram of the support component structure of Example 1;

[0027] Figure 3 This is a schematic diagram of the hinge structure in Example 1;

[0028] Figure 4 This is a schematic diagram of the overall structure of Example 2;

[0029] Figure 5 This is a top view of Example 2;

[0030] Figure 6 This is a schematic diagram of the structure using adhesive tape in Example 2. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] A support assembly for supporting a delivery catheter includes: a main support frame and at least one support subframe disposed on the main support frame. The main support frame and / or the support subframe are capable of position or shape adjustment. The support subframe is used to support the delivery catheter to prevent the delivery catheter from sagging, thereby preventing the delivery catheter from pulling on the puncture point connected to its front end and causing damage to the target object.

[0034] The supporting frame includes a forked plate, on which several forked rods are fixedly connected. The forked rods are arranged horizontally and neatly on the forked plate. One end of each forked rod is fixedly connected to the forked plate, and the other end is fixedly connected to a stop block. Each conveying conduit is placed on its corresponding forked rod. The distance between the forked rods is 20-100mm, the length of each forked rod is 400-800mm, the number of forked rods is 3-10, and the distance between the forked rods is equal.

[0035] The main support frame and / or the supporting sub-frame are universal tubes, corrugated tubes, or hollow metal tubes, and their posture adjustment is achieved by bending and shaping the main support frame and / or the supporting sub-frame themselves; or the main support frame and / or the supporting sub-frame are universal tubes, corrugated tubes, or flexible tubes, and the main support frame and / or the supporting sub-frame are equipped with metal wires, and the bending and shaping of the main support frame and / or the supporting sub-frame is achieved by bending and shaping the metal wires; or the main support frame and / or the supporting sub-frame are equipped with several hinges, ball joints, or telescopic rods, and the posture or shape adjustment of the main support frame and / or the supporting sub-frame is achieved by rotation and / or translation.

[0036] like Figures 1 to 3In this embodiment, the main support frame and the secondary support frame are connected by a hinge structure 2401001. The main support frame includes a first support rod 2401002 and a second support rod 2401003. The secondary support frame adopts a bifurcated structure 2401004. Hinges 2401001 are provided between the first support rod 2401002 and the main body 2401 of the radiation source implantation device, between the first support rod 2401002 and the second support rod 2401003, and between the second support rod 2401003 and the bifurcated structure 2401004. The axes of the three sets of hinge structures 2401001 are all horizontally arranged. Moreover, the axes of the three sets of hinge structures 2401001 are parallel to each other. The position of the bifurcated structure in space is controlled by the three sets of hinge structures 2401001, thereby adjusting the support position of the flexible delivery conduit (not shown in the figure).

[0037] like Figure 3 The hinge structure 2401001 includes a first hinge block 24010011 and a second hinge block 24010012, and the first hinge block 24010011 and the second hinge block 24010012 are connected to a screw knob 24010013. The tightness of the first hinge block 24010011 and the second hinge block 24010012 is adjusted by rotating the screw knob 24010013 in both directions. The opposite sides of the first hinge block 24010011 and the second hinge block 24010012 are respectively provided with a first tooth structure 24010014 and a second tooth structure 24010015 that can mesh. The operator loosens the screw. When knob 24010013 is turned, the relative angle between the first hinge block 24010011 and the second hinge block 24010012 can be adjusted. After the angle is adjusted, tighten the screw knob 24010013 so that the first tooth structure 24010014 and the second tooth structure 24010015 are in contact and mesh, which can improve the support rigidity of the hinge structure and fix the included angle between the first hinge block 24010011 and the second hinge block 24010012 to achieve the locking function. The three sets of hinge structures 2401001 control the position of the forked structure 2401004 in space and adjust the support position of the delivery conduit.

[0038] like Figure 2The bifurcated structure 2401004 includes a bifurcated plate 24010041, on which a plurality of bifurcated rods 24010042 are fixedly connected. The bifurcated rods 24010042 are arranged horizontally and neatly on the bifurcated plate 24010041, and the distance between the bifurcated rods 24010042 is equal. One end of the bifurcated rod 24010042 is fixedly connected to the bifurcated plate 24010041, and the other end of the bifurcated rod 24010042 is fixedly connected to a stop block 24010043. The stop block 24010043 effectively prevents the conveying conduit hanging on the bifurcated rod 24010042 from falling off from the end of the bifurcated rod 24010042.

[0039] The forked rod 24010042 is also provided with a limiting block, which is used to limit the delivery conduit to a designated position on the forked rod 24010042, or to limit the delivery conduit to a designated position on the forked rod 24010042 by means of tape or adhesive backing.

[0040] The support frame is fitted with a sterile isolation cover (not shown in the figure) to isolate the sterile environment from the sterile environment, ensuring that the delivery tubing is not contaminated. The shape of the sterile isolation cover is adapted to the shape of the support frame. The sterile isolation cover has a corresponding number of bifurcated cavities. Each bifurcated rod 24010042 of the support frame can be inserted into the corresponding cavity, thereby achieving a more conformal wrapping and more stable installation.

[0041] Example 2

[0042] like Figures 4 to 6 As shown, referring to the working principle of Embodiment 1, the support component can be replaced with the following structure:

[0043] The main support frame and several supporting sub-frames form a tree-like structure. Each supporting sub-frame includes a connecting end connected to the main support frame and a free end corresponding to the connecting end.

[0044] The delivery conduit is mounted on a supporting sub-frame, which supports the delivery conduit to prevent it from sagging; or the supporting sub-frame is equipped with a suspension device, and the delivery conduit is suspended from the supporting sub-frame by the suspension device to prevent it from sagging. The suspension device is one or a combination of tape, cable tie, and shackle. In some embodiments not shown, the main supporting frame and / or the supporting sub-frame are universal joints, corrugated pipes, or hollow metal pipes, and the position adjustment is achieved by bending and shaping the main supporting frame and / or the supporting sub-frame itself.

[0045] Alternatively, the main support frame and / or the supporting sub-frames can be universal tubes, corrugated tubes, or flexible hoses, with metal wires inside the main support frame and / or the supporting sub-frames. The bending and shaping of the main support frame and / or the supporting sub-frames can be achieved by bending and shaping the metal wires.

[0046] Alternatively, the main support frame and / or the supporting sub-frames may be equipped with several hinges, ball joints, or telescopic rods, which allow for adjustment of the posture or shape of the main support frame and / or the supporting sub-frames through rotation and / or translation.

[0047] Form 2: such as Figure 4 As shown, the support frame 511322 has multiple needle tube limiting blocks 511323 distributed from its connecting end side to its free end side. When the delivery tube 51131 is directly placed on the support frame 511322, the delivery tube 51131 is embedded in the needle tube limiting block 511323, thereby achieving support and fixation of the delivery tube 51131.

[0048] Form 3: such as Figure 5 As shown, multiple adhesive layers are distributed on the support frame 511322 from its connecting end side to its free end side. When the delivery conduit 51131 is placed on the support frame 511322, the delivery conduit 51131 is attached and fixed to the adhesive layers, thereby achieving support for the delivery conduit 51131.

[0049] Specific examples Figure 4 He Ru Figure 5 The aforementioned support component 51132 is also covered with a disinfection isolation cover to separate the sterile environment from the sterile environment. The shape of the disinfection isolation cover is adapted to the shape of a tree branch structure. The disinfection isolation cover has multiple tree branch-shaped inner cavities. Each support bracket 511322 can be inserted into the corresponding inner cavity to achieve a more conformal wrapping and facilitate adjustment of the posture or shape of the support bracket 511322. The disinfection isolation cover has a tightening rope, and each end of the support bracket has a slot. The tightening rope can be tightened at the slot to fix the disinfection isolation cover and prevent slippage.

[0050] It is worth noting that when a disinfection isolation cover is fitted over the outside of the support component 51132, the aforementioned limiting block and adhesive layer can also be installed on the disinfection isolation cover.

[0051] For example, the part of the disinfection isolation cover that is fitted outside the support frame 511322 has multiple needle limit blocks 511323. When the delivery tube 51131 is placed on the support frame 511322, the delivery tube 51131 is embedded in the needle limit block 511323, thereby achieving support and fixation of the delivery tube 51131.

[0052] For example, the part of the disinfection isolation cover that is fitted over the support frame 511322 has multiple adhesive layers. When the delivery conduit 51131 is placed on the support frame 511322, the delivery conduit 51131 is attached and fixed to the adhesive layers, thereby achieving support for the delivery conduit 51131.

[0053] The second type of support is as follows: The support component 51132 is provided with a suspension component, and the delivery conduit 51131 is suspended on the support component 51132 through the suspension component to prevent it from sagging. The suspension component is one or a combination of tape, cable tie, and shackle.

[0054] Specifically: such as Figure 6 As shown, the support assembly 51132 includes a main support frame 511321 and multiple support sub-frames 511322 disposed on the main support frame 511321. The main support frame 511321 and the multiple support sub-frames 511322 form a tree-like structure. The conveying conduit 51131 is suspended and connected to the support sub-frames 511322 by a tape 51133.

[0055] Example 3

[0056] A radiation source implantation system with a support component includes a support component and a cannula-type radiation source implantation device. The cannula-type radiation source implantation device includes a radiation source implantation host and a delivery conduit. The support component is used to support the delivery conduit. The rear end of the delivery conduit is connected to the output port of the radiation source implantation host. The radiation source implantation host drives the radiation source to enter the target object along the delivery conduit.

[0057] The delivery catheter includes an inner tube and an outer tube. The outer tube is sleeved outside the inner tube. The front end of the inner tube is connected to the puncture needle inserted into the target object, and the front end of the outer tube abuts against or is connected to the target object.

[0058] The cannula-type radiation source implantation device also includes a needle removal drive mechanism, which drives the inner tube and the outer tube to move relative to each other, so that the puncture needle moves away from the target object and is pulled out of the target object.

[0059] The radioactive source implantation unit includes a pusher output channel, a first pusher, and a first pusher drive mechanism. The pusher output channel guides the first pusher to move back and forth. The first pusher drive mechanism is connected to the pusher output channel, which is connected to or opposite to the delivery conduit. The first pusher drive mechanism drives the first pusher to move back and forth along the pusher output channel, thereby pushing the radioactive source, which is positioned in front of the first pusher, along the delivery conduit and the puncture needle to the target position. The radioactive source supply mechanism can be a particle magazine.

[0060] The first push rod is a flexible push rod. The first push rod drive mechanism drives the flexible push rod by friction drive. A part of the first push rod drive mechanism is pressed against the flexible push rod. The friction force generated by the pressing drives the flexible push rod to move back and forth. The first push rod drive mechanism is one or more combinations of friction wheel, friction belt, and reciprocating clamping assembly. Preferably, the first push rod drive mechanism adopts the driving method of friction wheel. The friction wheel presses against the flexible push rod, and the rotation of the friction wheel drives the flexible push rod to move back and forth.

[0061] Furthermore, it also includes a storage assembly for storing the flexible push rod. The storage assembly is located at the rear end of the first push rod drive mechanism. The storage assembly is a wheel-type storage mechanism, which includes a storage wheel. The flexible push rod is wound around the inner or outer side of the storage wheel as the storage wheel rotates. Preferably, the storage assembly is a concave storage wheel. The concave storage wheel has an internal recessed structure and an opening on the side. The flexible push rod extends into the concave storage wheel from the side opening and is wound around the internal recess of the concave storage wheel.

[0062] The relative motion between the inner and outer tubes can take one of the following forms:

[0063] The rear end of the inner tube is fixed, and the outer tube is driven to move towards the target object.

[0064] Alternatively, fix the rear end of the outer tube and drive the inner tube to move away from the target object;

[0065] Alternatively, both the outer and inner tubes can be driven to move, but relative sliding motion occurs between them, with the inner tube moving towards the target object relative to the outer tube.

[0066] The needle removal drive mechanism can be a direct push-pull, clamping drive, friction drive, or meshing drive.

[0067] When the inner tube is fixed, and the needle removal drive mechanism adopts a direct push-pull drive method, the needle removal drive mechanism applies a thrust to the rear end face of the outer tube or to the stepped surface or connecting part set on the outer tube, thereby driving the outer tube to move towards the target object.

[0068] Specifically, the needle removal drive mechanism includes a push-pull motion component and a push-pull assembly. The push-pull assembly is mounted on the push-pull motion component and can move along a certain trajectory under the drive of the push-pull motion component. The push-pull assembly can directly apply a pushing force to the rear end face of the outer tube or to the stepped surface or connecting part mounted on the outer tube. Thus, through the cooperation of the push-pull motion component and the push-pull assembly, the inner tube and the outer tube can be directly driven to make relative sliding motion. The push-pull motion component adopts linear motion or arc rotation.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0070] 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 support assembly for supporting a delivery conduit, characterized in that, It includes a main support frame and at least one support subframe disposed on the main support frame. The main support frame and / or the support subframe can achieve position or shape adjustment. The support subframe is used to support the delivery catheter to prevent the delivery catheter from sagging, thereby preventing the delivery catheter from pulling on the puncture point connected to its front end and causing damage to the target object.

2. A support assembly for supporting a delivery conduit according to claim 1, characterized in that, The main support frame and several supporting sub-frames form a tree-like structure. Each supporting sub-frame includes a connecting end connected to the main support frame and a free end corresponding to the connecting end.

3. A support assembly for supporting a delivery conduit according to claim 2, characterized in that, The delivery conduit is mounted on a support frame, which supports the delivery conduit to prevent it from sagging; or the support frame is equipped with a suspension device, which suspends the delivery conduit from sagging. The suspension device is one or a combination of tape, cable tie, and shackle.

4. A support assembly for supporting a delivery conduit according to claim 2, characterized in that, The support frame has multiple needle tube limiting blocks distributed from its connecting end side to its free end side. When the delivery tube is placed on the support frame, the delivery tube is embedded in the needle tube limiting blocks, thereby achieving support for the delivery tube.

5. A support assembly for supporting a delivery conduit according to claim 2, characterized in that, Multiple adhesive layers are distributed on the support frame from its connecting end to its free end. When the delivery conduit is placed on the support frame, the delivery conduit is attached and fixed to the adhesive layers, thereby achieving support for the delivery conduit.

6. A support assembly for supporting a delivery conduit according to claim 1, characterized in that, The supporting frame includes a forked plate, on which several forked rods are fixedly connected. The forked rods are arranged horizontally and neatly on the forked plate. One end of each forked rod is fixedly connected to the forked plate, and the other end is fixedly connected to a stop block. Each conveying conduit is placed on its corresponding forked rod. The distance between the forked rods is 20-100mm, the length of each forked rod is 400-800mm, the number of forked rods is 3-10, and the distance between the forked rods is equal.

7. A support assembly for supporting a delivery conduit according to claim 1, characterized in that, The main support frame and / or the supporting sub-frame are universal tubes, corrugated tubes, or hollow metal tubes, and their posture adjustment is achieved by bending and shaping the main support frame and / or the supporting sub-frame themselves; or the main support frame and / or the supporting sub-frame are universal tubes, corrugated tubes, or flexible tubes, and the main support frame and / or the supporting sub-frame are equipped with metal wires, and the bending and shaping of the main support frame and / or the supporting sub-frame is achieved by bending and shaping the metal wires; or the main support frame and / or the supporting sub-frame are equipped with several hinges, ball joints, or telescopic rods, and the posture or shape adjustment of the main support frame and / or the supporting sub-frame is achieved by rotation and / or translation.

8. A support assembly for supporting a delivery conduit according to claim 7, characterized in that, When the main support frame and the supporting sub-frame adopt a hinge structure, the main support frame includes a first support rod and a second support rod. Hinges are provided between the first support rod and the main body of the radiation source implantation device, between the first support rod and the second support rod, and between the second support rod and the supporting sub-frame. The axes of the three sets of hinge structures are all arranged horizontally and are parallel to each other. The position of the supporting sub-frame in space is controlled by the three sets of hinge structures, and the support position of the delivery conduit is adjusted. The hinge structure includes a first hinge block and a second hinge block, and the first hinge block and the second hinge block are connected by a screw knob. The tightness of the first hinge block and the second hinge block can be adjusted by rotating the screw knob in both directions. The opposite sides of the first hinge block and the second hinge block are respectively provided with a first tooth structure and a second tooth structure that can mesh with each other. The first tooth structure and the second tooth structure mesh with each other, which can improve the support rigidity of the hinge structure.

9. A support assembly for supporting a delivery conduit according to claim 2 or 6, characterized in that, The support frame is covered with a disinfection isolation cover to separate the sterile environment from the sterile environment. The shape of the disinfection isolation cover is adapted to the shape of the support frame. The disinfection isolation cover has a corresponding number of bifurcated cavities. Each support frame or bifurcated rod of the support frame can be inserted into the corresponding cavity to achieve a more conformal wrapping.

10. A radiation source implantation system with a support assembly, characterized in that, The device includes a cannula-type radioactive source implantation device and a support component according to any one of claims 1-9. The cannula-type radioactive source implantation device includes a radioactive source implantation host and a delivery conduit. The support component is used to support the delivery conduit. The rear end of the delivery conduit is connected to the output port of the radioactive source implantation host. The radioactive source implantation host drives the radioactive source to enter the target object along the delivery conduit. The delivery catheter includes an inner tube and an outer tube. The outer tube is sleeved outside the inner tube. The front end of the inner tube is connected to the puncture needle inserted into the target object, and the front end of the outer tube abuts against or is connected to the target object. The cannula-type radiation source implantation device also includes a needle removal drive mechanism, which drives the inner tube and the outer tube to move relative to each other, so that the puncture needle moves away from the target object and is pulled out of the target object.

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