A particle implantation auxiliary device

Abstract

The present invention provides a particle implantation auxiliary device, which belongs to the field of medical devices, including a clamping assembly, a guide, a driving member and a traction member, and may also include a quick-release assembly. The mechanism design of the clamping assembly and the guide member in the present invention can provide a puncture auxiliary channel for the particle implantation process, realize the precise orientation of the puncture path during the operation, and ensure the smooth completion of the particle implantation operation; the use of the driving member and the traction member can realize the control of the clamping assembly to form and release the auxiliary channel; in addition, while providing precise orientation of the puncture path, the guide and the clamping assembly inevitably come into contact with the implantation needle, the patient, etc., so sterilization and disinfection are required before the operation, and the sterile state is maintained during the operation. The application of the quick-release assembly makes the guide and the clamping assembly easy to disassemble and assemble, and convenient for disinfection, thereby greatly optimizing the operation process.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and in particular relates to a particle implantation auxiliary device. Background Art

[0002] Radiotherapy is currently one of the important means of treating malignant tumors. About 60% to 70% of cancer patients need to receive radiotherapy.

[0003] Seed implantation is a currently popular radiotherapy method. A sealed radioactive source is implanted percutaneously into diseased tissue, where it continuously releases radiation to treat tumors. As a form of brachytherapy, seed implantation has been used for over 100 years and has been widely used in my country over the past decade, achieving remarkable clinical results.

[0004] Seed implantation is typically performed manually or automatically. Maintaining precise intraoperative puncture path planning is crucial for both manual and automated implantation, improving implant accuracy and minimizing puncture injury. However, with existing technologies, the implantation needle is prone to bending or deviating from the intended trajectory during implantation. Precise intraoperative puncture path orientation and management is challenging, and improved seed implantation equipment or auxiliary facilities are urgently needed for effective implementation. Summary of the Invention

[0005] The purpose of the present invention is to provide a particle implantation assisting device to achieve precise orientation of the puncture path during surgery.

[0006] Based on the above purpose, the technical solution of the present invention is as follows:

[0007] A particle implantation assisting device is used to assist in guiding and positioning a particle implantation needle. The particle implantation assisting device comprises a clamping assembly, a guide member, a driving member, and a traction member. The clamping assembly and the driving member are arranged on the guide member. One end of the traction member is connected to the clamping assembly, and the other end is connected to the driving member.

[0008] The clamping assembly of the present invention can be implemented using a four-bar linkage:

[0009] Specifically, the clamping assembly includes a clamping jaw, a rotating shaft, a first connecting arm and a second connecting arm; the clamping jaw includes a first clamping jaw piece and a second clamping jaw piece, the middle parts of the first clamping jaw piece and the second clamping jaw piece are hinged by the rotating shaft, and the position of the rotating shaft relative to the guide member remains unchanged; the first clamping jaw piece and the second clamping jaw piece are divided into a first side and a second side by the rotating shaft, the first opening formed by the first clamping jaw piece and the second clamping jaw piece on the first side is used to form an auxiliary channel for the particle implantation needle, the first clamping jaw piece and the second clamping jaw piece form a first connecting rod and a second connecting rod on the second side, the first connecting rod and the second connecting rod are connected to the first and second connecting arms in sequence end to end to form a closed structure, the connection between the first and second connecting arms is connected to the traction member, the first connecting rod and the second connecting rod form a second opening, the traction member drives the connection between the first and second connecting arms to move, so that the opening and closing degree of the second opening changes, thereby forming an auxiliary channel or releasing the auxiliary channel at the first opening.

[0010] Preferably, the first connecting arm, the second connecting arm and the traction member are all rigid;

[0011] Alternatively, the first connecting arm and the second connecting arm are rigid, the pulling member is flexible, the connection between the first connecting arm and the second connecting arm abuts against one end of an elastic element, the other end of the elastic element abuts against a fixed end, and the elastic element applies a force to the connection in a direction opposite to the pulling force of the pulling member;

[0012] Alternatively, the first connecting arm or the second connecting arm is flexible, and an elastic member is provided on the rotating shaft;

[0013] In the solution where the first connecting arm, the second connecting arm and the traction member are all rigid, and in the solution where the first connecting arm and the second connecting arm are rigid and the traction member is flexible, an elastic member may also be provided on the rotating shaft to enable the first opening to be opened flexibly.

[0014] The clamping assembly of the present invention can also be implemented using the following structure:

[0015] Specifically, the clamping assembly includes a clamping claw, a rotating shaft, and a sliding rod; the particle implantation auxiliary device also includes a mounting seat, the mounting seat is arranged at one end of the guide member, the mounting seat has a channel for the sliding rod to slide, and the sliding rod is arranged in the channel;

[0016] The sliding rod has at least one shaft segment, the radial dimension of which changes monotonically along the axial direction, and the sliding rod is connected to one end of the traction member;

[0017] The clamping jaw includes a first clamping jaw piece and a second clamping jaw piece, the middle parts of the first clamping jaw piece and the second clamping jaw piece are hinged by the rotating shaft, and the position of the rotating shaft relative to the guide member remains unchanged; the first clamping jaw piece and the second clamping jaw piece are divided into a first side and a second side by the rotating shaft, and the first opening formed by the first clamping jaw piece and the second clamping jaw piece on the first side is used to form an auxiliary channel for the particle implantation needle, and the second opening formed by the first clamping jaw piece and the second clamping jaw piece on the second side is used to cooperate with the sliding rod. When the second opening cooperates with different parts of the sliding rod, the opening and closing degree of the second opening is different, so that an auxiliary channel is formed at the first opening or the auxiliary channel is released.

[0018] Preferably, the traction member is rigid;

[0019] Alternatively, the traction member is flexible, one end of the sliding rod close to the driving member abuts against one end of an elastic element, the other end of the elastic element abuts against a fixed end, and the elastic element applies a force to the sliding rod in the opposite direction to the pulling force of the traction member.

[0020] In order to enable the first opening to be opened flexibly, an elastic member is provided on the rotating shaft.

[0021] The traction member of the present invention can be arranged outside the guide member; or, the guide member is a hollow structure, and the traction member is arranged inside the guide member.

[0022] Preferably, the particle implantation assisting device further comprises a quick-release assembly, wherein the quick-release assembly comprises a first connecting portion and a second connecting portion;

[0023] One end of the first connecting portion is connected to the driving member, and the other end is detachably connected to the second connecting portion;

[0024] One end of the second connection portion is connected to the traction member, and the other end is detachably connected to the first connection portion.

[0025] Preferably, the quick-release assembly further comprises a quick-release assembly fixing seat, the quick-release assembly fixing seat having an opening at one end and a side thereof away from the driving member, the first connecting portion being at least partially located in the quick-release assembly fixing seat, the second connecting portion entering the quick-release assembly fixing seat from the opening and docking with the first connecting portion.

[0026] Preferably, a set of matching first limiting protrusions and first limiting grooves are provided on the quick-release assembly fixing seat and the guide member for fixing the guide member.

[0027] Preferably, a second limiting protrusion is provided on the first connecting part and / or a third limiting protrusion is provided on the second connecting part, and a fourth limiting protrusion is provided on the quick-release assembly fixing seat, and the fourth limiting protrusion cooperates with the second limiting protrusion and / or the third limiting protrusion to limit the first connecting part and the second connecting part.

[0028] According to the particle implantation assisting device involved in the present invention, due to the mechanical design of the clamping structure and the guide member, a puncture assisting channel can be provided for the particle implantation process, thereby achieving precise orientation of the intraoperative puncture path and ensuring the smooth completion of the particle implantation surgery.

[0029] In addition, while providing precise orientation of the puncture path, the guide and clamping structure will inevitably come into contact with the implant needle or tissue fluid. The guide and clamping structure are designed as reusable devices, so they need to be sterilized before surgery and maintained in a sterile state during surgery. The application of the quick-release structure makes the guide or clamping mechanism easy to disassemble and assemble, and facilitates sterilization, thereby greatly optimizing the surgical process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective view of a particle implantation assisting device according to an embodiment of the present invention, showing a clamping assembly in a closed state;

[0031] Figure 2 and Figure 1 Correspondingly, the figure shows the open state of the clamping assembly;

[0032] Figure 3 for Figure 1-2 A structure of a clamping assembly in the figure, wherein the figure shows a closed state of the clamping assembly;

[0033] Figure 4 and Figure 3 Correspondingly, the figure shows the open state of the clamping assembly;

[0034] Figure 5 for Figure 1-2 Another structure of the clamping assembly in the figure, the figure shows the open state of the clamping assembly;

[0035] Figure 6 for Figure 1-2 Another structure of the clamping assembly in the figure, the figure shows the open state of the clamping assembly;

[0036] Figure 7 A perspective view of a particle implantation assisting device according to another embodiment of the present invention is shown, in which the clamping assembly is in a closed state;

[0037] Figure 8 for Figure 7 A partial cross-sectional view showing a structure of the clamping assembly;

[0038] Figure 9 for Figure 8 A partial enlarged view showing the closed state of the clamping assembly;

[0039] Figure 10 and Figure 9 Correspondingly, the figure shows the open state of the clamping assembly;

[0040] Figure 11 for Figure 7 Another structure of the clamping assembly in;

[0041] Figure 12 for Figure 7 Another structure of the clamping assembly in;

[0042] Figure 13 A perspective view of a particle implantation assisting device according to another embodiment of the present invention;

[0043] Figure 14 Schematic diagram of a particle implantation assisting device with a quick-release assembly according to the present invention, wherein the quick-release assembly is in a connected state;

[0044] Figure 15 and Figure 14 Correspondingly, the quick-release assembly in the figure is in a disassembled state;

[0045] Figure 16 It shows a three-dimensional view of the quick release assembly when it is provided with a quick release assembly fixing seat;

[0046] Figure 17 yes Figure 16 A partial enlarged view of the main view of FIG, showing the extreme position of the connecting portion away from the driving member;

[0047] Figure 18 yes Figure 16 A partial enlarged view of the main view shows the extreme position of the connecting part close to the driving member. DETAILED DESCRIPTION

[0048] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is described in detail in the following embodiments with reference to the accompanying drawings.

[0049] like Figure 1-2 The figure shows a three-dimensional diagram of a particle implantation assisting device provided by the present invention, which includes a clamping assembly 1, a guide member 2, a driving member 3 and a traction member 4. The clamping assembly 1 and the driving member 3 are arranged on the guide member 2, and one end of the traction member 4 is connected to the clamping assembly 1 and the other end is connected to the driving member 3. Figure 1 The clamping assembly 1 is shown in a closed state, wherein a particle implantation auxiliary channel 8 is formed. Figure 2The clamping assembly 1 is shown in an open state, and the particle implantation auxiliary channel 8 is released.

[0050] For the clamping assembly 1, the specific method is as follows: Figure 3-6 The structure shown is similar to a four-bar linkage. Figure 3-4 As shown, the clamping assembly 1 includes a clamping jaw 11, a rotating shaft 12, a connecting arm 13 and a connecting arm 14. The clamping jaw 11 includes a clamping jaw piece 111 and a clamping jaw piece 112. The middle parts of the clamping jaw piece 111 and the clamping jaw piece 112 are hinged by the rotating shaft 12. The position of the rotating shaft 12 relative to the guide member 2 remains unchanged. For example, both ends of the rotating shaft 12 are fixed on the guide member 2, or both ends of the rotating shaft 12 cooperate with the grooves on the guide member 2. The rotating shaft 12 can rotate around its own axis, but its position relative to the guide member 2 remains unchanged; the clamping jaw piece 111 and the clamping jaw piece 112 are divided into two sides by the rotating shaft 12. One side forms a first opening through the cooperation of the clamping jaw pieces 111 and 112. The first opening has different shapes. Figure 3 The first opening is closed to form a particle implantation auxiliary channel 8. Figure 4 The first opening in the middle is opened to release the particles to be implanted into the auxiliary channel 8; on the other side, the clamping claws 111 and 112 extend out connecting rods 113 and 114, and the connecting arms 13 and 14 and the connecting rods 113 and 114 are connected end to end to form a closed structure, and the connection between the connecting arms 13 and 14 is connected to the traction member 4, and the traction member 4 drives the connection between the connecting arms 13 and 14 to move, so that the opening and closing degree of the second opening formed by the connecting rods 113 and 114 changes, so that the first opening can realize the action of forming and releasing the auxiliary channel.

[0051] Figure 3-4 In the embodiment, the connecting arms 13, 14 and the pulling member 4 can all be rigid, for example, a rod-shaped object. When the driving member 3 pulls the pulling member 4 toward the driving member 3, as shown in FIG. Figure 3 As shown, the opening and closing degree of the second opening formed by the connecting rods 113 and 114 becomes smaller, and the first opening forms a particle implantation auxiliary channel. The particle implantation needle can perform puncture under the constraint of the auxiliary channel. The position and direction of the auxiliary channel limit the position and direction of puncture, so it can assist puncture. When the driving member 3 pushes the traction member 4 in the direction away from the driving member 3, as shown in FIG. Figure 4 As shown, the opening and closing degree of the second opening formed by the connecting rods 113 and 114 becomes larger, and the particle implantation auxiliary channel 8 is released at the first opening.

[0052] Alternatively, the traction member 4 may be configured to be flexible, such as a rope, and the connecting arms 13 and 14 may be configured to be rigid, such as a rod. In this case, due to the soft texture of the traction member 4, the driving member 3 can only move the connection of the connecting arms 13 and 14 closer to the driving member 3 through the traction member 4, but cannot move the connection of the connecting arms 13 and 14 away from the driving member 3. Figure 5 As shown, an elastic element 5 is provided at the connection of the connecting arms 13 and 14, the connection of the connecting arms 13 and 14 abuts against one end of the elastic element 5, and the other end of the elastic element 5 abuts against a fixed end 51, and the traction member 4 passes through the middle of the fixed end 51 and is connected to the connection of the connecting arms 13 and 14. The elastic element 5 can apply a force to the connection in the opposite direction to the pulling direction of the traction member 4, so that when the pulling force of the traction member 4 is reduced to a certain extent, the elastic element 5 can push the connection to move in the direction away from the driving member 3.

[0053] The connecting arm 13 or the connecting arm 14 can also be set to be flexible, for example, a rope-shaped object. In this case, Figure 5 The elastic element 5 in the second opening cannot well control the opening and closing degree of the second opening. Figure 6 As shown, an elastic member 121 is provided on the rotating shaft 12, which may be a torsion spring, a spring, a shrapnel, etc. Once the pulling force of the traction member 4 is reduced to a certain extent, the restoring force of the elastic member 121 will open the first opening, thereby releasing the particle implantation auxiliary channel 8. Figure 3-5 An elastic member 121 may also be provided on the rotating shaft 12 so that the first opening can be opened flexibly.

[0054] In this embodiment, Figure 1 As shown, the guide member 2 is a hollow structure, the pulling member 4 is disposed inside the guide member 2, and the fixed end 51 can be specifically an annular protrusion inside the guide member 2. The pulling member 4 can also be disposed outside the guide member 2 (not shown in the figure), in which case the fixed end 51 can be specifically a protrusion fixed to the outer surface of the guide member 2, and the protrusion has a hole for the pulling member 4 to pass through.

[0055] Figure 7-8 A perspective view showing a particle implantation assisting device according to another embodiment is shown. Figure 7 In the embodiment, the clamping assembly 1 is in a closed state, forming a particle implantation auxiliary channel; Figure 8 right Figure 7 The clamping assembly 1 in the figure is partially cut away. The particle implantation assisting device also includes a clamping assembly 1, a guide member 2, a driving member 3 and a pulling member 4. The clamping assembly 1 and the driving member 3 are arranged on the guide member 2. One end of the pulling member 4 is connected to the clamping assembly 1 and the other end is connected to the driving member 3. In the figure, the pulling member 4 is arranged outside the guide member 2. The guide member 2 can also be designed as a hollow structure, and the pulling member 4 is arranged inside the guide member 2, as shown in FIG. Figure 13As shown, no further details are given.

[0056] The clamping assembly 1 includes a clamping jaw 11, a rotating shaft 12, and a sliding rod 15. The mounting seat 6 is provided at one end of the guide member 2. The mounting seat 6 provides a sliding channel for the sliding rod 15, and the sliding rod 15 is disposed in the channel of the mounting seat 6. Here, the mounting seat 6 can be integral with the guide member 2 or can be separate from the guide member 2 and mounted on the guide member 2.

[0057] The clamping jaw 11 includes a clamping jaw piece 111 and a clamping jaw piece 112. The middle parts of the clamping jaw pieces 111 and 112 are hinged by a rotating shaft 12. The position of the rotating shaft 12 relative to the guide member 2 remains unchanged. The clamping jaw pieces 111 and 112 are divided into a first side and a second side by the rotating shaft 12. The first opening formed on the first side of the clamping jaw pieces 111 and 112 is used to form Figure 8 The auxiliary channel 8 of the particle implanting needle shown; the second opening formed on the second side of the clamping jaws 111, 112 is used to cooperate with the sliding rod 15. Figure 9-10 In the enlarged cross-sectional view of the middle clamping assembly 1, the radial dimension of one of the shaft sections of the sliding rod 15 changes monotonically along the axial direction. When the second opening cooperates with different parts of the sliding rod 15, the opening and closing degree of the second opening is different, thereby forming an auxiliary channel at the first opening or releasing the auxiliary channel.

[0058] Figure 9-10 In the embodiment, the traction member 4 can be rigid, for example, a rod-shaped object, one end of the sliding rod 15 is connected to the driving member 3 through the traction member 4, when the driving member 3 pulls the traction member 4 toward the driving member 3, as shown in FIG. Figure 9 As shown, the clamping claws 111 and 112 contact the radially largest portion of the sliding rod 15 on the second side, the second opening is opened to the maximum extent, and the first opening is closed, forming the particle implantation auxiliary channel 8; when the driving member 3 pushes the traction member 4 in the direction away from the driving member 3, as shown in FIG. Figure 10 As shown, the clamping claws 111 and 112 contact the radially smaller portion of the sliding rod 15 on the second side, the opening and closing degree of the second opening becomes smaller, and the first opening is opened to release the particle implantation auxiliary channel 8.

[0059] The traction member 4 can also be set to be flexible, such as a rope. In this case, since the traction member 4 is soft, the driving member 3 can only apply a pulling force to the sliding rod 15 through the traction member 4, but cannot apply a pushing force. Figure 11As shown, an elastic element 5 is provided on the side of the sliding rod 15 close to the driving member 3, one end of the elastic element 5 abuts the sliding rod 15, and the other end abuts a fixed end 51. The traction member 4 passes through the middle of the fixed end 51 and the elastic element 5 and is connected to one end of the sliding rod 15. The elastic element 5 can apply a force to the sliding rod 15 in the opposite direction to the pulling direction of the traction member 4, so that when the pulling force of the traction member 4 is reduced to a certain extent, the elastic element 5 can push the sliding rod 15 to move in the direction away from the driving member 3.

[0060] like Figure 12 As shown, no matter what the shape of the traction member 4 is, an elastic member 121 can be provided on the rotating shaft 12 so that the first opening can be opened flexibly.

[0061] Since the front end of the guide member 2 and the clamping assembly 1 may come into contact with the patient or other active components and may be easily contaminated, the present invention introduces a quick-release assembly 7 into the particle implantation assisting device, and adopts a detachable and separate sterilization method for the guide assembly 2 and the clamping assembly 1.

[0062] like Figure 14-15 FIG. 1 is a schematic diagram of a particle implantation assist device according to the present invention having a quick-release assembly 7. The quick-release assembly 7 includes a connecting portion 71 and a connecting portion 72. Connecting portion 71 is connected to the driver 3 at one end and detachably connected to connecting portion 72 at the other end. Connecting portion 72 is connected to the traction member 4 at one end and detachably connected to connecting portion 71 at the other end. In this embodiment, connecting portion 71 is connected to the driver 3 via an adapter 711. Alternatively, the connecting portion can be directly connected to the driver 3. The driver 3 transmits force via the connection between connecting portions 71 and 72, thereby controlling the traction member 4.

[0063] like Figure 16-18 As shown, to better secure the quick-release assembly 7 and ensure stability of the front guide member 2 and clamping assembly 1, the quick-release assembly 7 of the present invention is further provided with a quick-release assembly fixing seat 78. The quick-release assembly fixing seat 78 has an opening at its end and side away from the driving member 3. At least a portion of the connecting portion 71 is disposed within the quick-release assembly fixing seat 78. The connecting portion 72 can enter the quick-release assembly fixing seat 78 through the opening and dock with the connecting portion 71. Furthermore, a pair of matching limiting protrusions 73 and limiting grooves 74 are provided on the quick-release assembly fixing seat 78 and the guide member 2 for securing the guide member 2. The limiting protrusions 73 can be disposed on the quick-release assembly fixing seat 78 and the limiting grooves 74 on the guide member 2, or vice versa.

[0064] In order to prevent the traction member 4 from moving too far away from / close to the driving member 3, resulting in an abnormal state of the front clamping assembly 1, a limiting protrusion 75 is provided on the quick-release assembly fixing seat 78, a limiting protrusion 76 is provided on the connecting portion 71, and a limiting protrusion 77 is provided on the connecting portion 72, wherein, Figure 17 The figure shows the extreme position where the connecting parts 71 and 72 are away from the driving member 3. Figure 18 Shown are the extreme positions of the connecting parts 71 and 72 close to the driving member 3 .

[0065] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. The scope of the patent of the present invention cannot be limited by these embodiments alone.

Claims

1. A particle implantation assisting device for assisting the guidance and positioning of a particle implantation needle, characterized in that: The particle implantation auxiliary device comprises a clamping assembly, a guide, a driving member and a traction member, wherein the clamping assembly and the driving member are arranged on the guide, one end of the traction member is connected to the clamping assembly, and the other end is connected to the driving member; the clamping assembly comprises a clamping jaw, a rotating shaft and a sliding rod; the particle implantation auxiliary device also comprises a mounting seat, wherein the mounting seat is arranged at one end of the guide, the mounting seat has a channel for the sliding rod to slide, and the sliding rod is arranged in the channel; the sliding rod has at least one shaft segment, the radial dimension of the shaft segment changes monotonically along the axial direction, and the sliding rod is connected to one end of the traction member; the clamping jaw comprises a first clamping jaw piece and a first clamping jaw piece. Two clamping jaws, the middle parts of the first clamping jaw and the second clamping jaw are hinged by the rotating shaft, and the position of the rotating shaft relative to the guide member remains unchanged; the first clamping jaw and the second clamping jaw are divided into a first side and a second side by the rotating shaft, the first opening formed by the first clamping jaw and the second clamping jaw on the first side is used to form an auxiliary channel for the particle implantation needle, and the second opening formed by the first clamping jaw and the second clamping jaw on the second side is used to cooperate with the sliding rod, when the second opening cooperates with different parts of the sliding rod, the opening and closing degree of the second opening is different, so that an auxiliary channel is formed at the first opening or the auxiliary channel is released.

2. The particle implantation assisting device according to claim 1, characterized in that: The traction member is rigid.

3. The particle implantation assisting device according to claim 1, characterized in that: The traction member is flexible, one end of the sliding rod close to the driving member abuts against one end of an elastic element, the other end of the elastic element abuts against a fixed end, and the elastic element applies a force opposite to the pulling direction of the traction member to the sliding rod.

4. The particle implantation assisting device according to any one of claims 1 to 3, characterized in that: An elastic member is arranged on the rotating shaft.

5. The particle implantation assisting device according to any one of claims 1 to 3, characterized in that: The traction member is arranged outside the guide member; or the guide member is a hollow structure, and the traction member is arranged inside the guide member.

6. The particle implantation assisting device according to any one of claims 1 to 3, characterized in that: The particle implantation auxiliary device also includes a quick-release assembly, which includes a first connecting part and a second connecting part; one end of the first connecting part is connected to the driving part, and the other end is detachably connected to the second connecting part; one end of the second connecting part is connected to the traction part, and the other end is detachably connected to the first connecting part.

7. The particle implantation assisting device according to claim 6, characterized in that: The quick-release assembly also includes a quick-release assembly fixing seat, which has an opening at one end and a side thereof away from the driving member, the first connecting portion is at least partially located in the quick-release assembly fixing seat, and the second connecting portion enters the quick-release assembly fixing seat from the opening and docks with the first connecting portion.

8. The particle implantation assisting device according to claim 7, characterized in that: A set of matching first limiting protrusions and first limiting grooves are provided on the quick-release assembly fixing seat and the guide member, which are used to fix the guide member.

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