A puncture guide splicing unit

Abstract

The present invention relates to a puncture guide splicing unit, the structure of which includes a first unit body and a second unit body, the first unit body and the second unit body are spliced ​​into a complete splicing unit, the splicing unit is a rectangular parallelepiped, and fixed protrusions are respectively provided on the three surfaces of the splicing unit, and the surfaces where the three fixed protrusions are located are respectively adjacent to each other, and fixed grooves are respectively provided on the other three surfaces of the splicing unit, and a guide hole is opened on the splicing unit from the bottom surface to the top surface, and the guide hole is located on the splicing surface of the first unit body and the second unit body. The present invention can be combined into a plane template of any size for use, and the direction of each needle channel is adjustable, and it has the function of an adjustable angle template. The template size, shape and puncture needle angle can be individually designed, and coplanar needle channels and non-coplanar needle channels can be guided at the same time. The angle of each puncture needle can be adjusted according to the actual situation during the operation. The template can be designed, assembled and modified on site during the operation, which is more flexible than a 3D printed template.

Description

Technical Field

[0001] The invention relates to a puncture guide device, in particular to a puncture guide splicing unit. Background Art

[0002] Tumor treatment has entered the era of minimally invasive treatment dominated by needle puncture. Needle surgeries such as puncture biopsy, ablation, argon-helium knife, nano knife, particle implantation, etc. all require precise puncture into the tumor for treatment. Accurate puncture is the key to needle surgery. There are currently a variety of puncture guidance devices, such as flat guidance templates, adjustable angle guidance templates, 3D printed individualized guidance templates, etc. All can partially meet the requirements of puncture guidance, but various templates have their own advantages and disadvantages, and cannot replace each other for the time being.

[0003] The advantage of the flat template is that it is easy to learn and use. The disadvantage is that all needle tracks must be parallel. Some tumors are difficult to puncture during multiple needle punctures, and more needle tracks are used.

[0004] The adjustable angle template is a significant improvement on the flat template. The angles between each row of needle channels do not have to be parallel, and the single needle channel guide hole can be removed during surgery, which facilitates the adjustment of the needle channel direction during surgery. However, the adjustment of the needle channel is still limited to a certain extent. The direction of each row of needles must be consistent, and non-coplanar needle channels cannot be punctured.

[0005] The 3D printed personalized guide template is designed completely according to the patient's tumor location, endangered organs and body surface contours. Each needle track can be freely designed and does not have to be parallel to each other. It can puncture both coplanar and non-coplanar needle tracks. However, due to the need for personalized design, each template can only be used on a specific patient and is a one-time use. It must be designed and made at least one day before the operation. Once the production is completed, the operation must be carried out according to the design, and it is difficult to adjust the surgical plan during the operation. Encountering an emergency may make the template unusable.

[0006] Currently, there is no device that can simultaneously meet the advantages of the above three templates without their disadvantages. Summary of the invention

[0007] The purpose of the present invention is to provide a puncture guide splicing unit to solve the problem that the existing puncture template cannot conveniently adjust the needle path and is inflexible to use.

[0008] The present invention is implemented as follows: a puncture guide splicing unit includes a first unit body and a second unit body, the first unit body and the second unit body are spliced ​​into a complete splicing unit, the splicing unit is a rectangular parallelepiped, and fixing protrusions are respectively provided on three surfaces of the splicing unit, and the surfaces where the three fixing protrusions are located are respectively adjacent to each other, and fixing grooves are respectively provided on the other three surfaces of the splicing unit, and a guide hole is opened on the splicing unit from the bottom surface to the top surface, and the guide hole is located on the splicing surface of the first unit body and the second unit body.

[0009] The guide hole is formed by a first guide groove located on the joint surface of the first unit body and a second guide groove located on the joint surface of the second unit body.

[0010] The guide hole and the vertical line of the bottom surface of the splicing unit form an angle of -45° to 45°. There are several groups of splicing units in total. The angle between the guide hole and the vertical line of the bottom surface of each group of splicing units gradually changes from -45° to 45°, with a change range of 0.5° to 2°.

[0011] An inserting groove or an inserting protrusion is respectively arranged on the splicing surface of the first unit body and the splicing surface of the second unit body. The inserting groove and the inserting protrusion are both strip-shaped. The inserting protrusion is inserted into the inserting groove to connect the first unit body and the second unit body together.

[0012] The fixing protrusion is in the shape of a protruding oblate sphere, and the fixing groove is in the shape of a concave oblate sphere. The fixing protrusion on one splicing unit and the fixing groove on another splicing unit are fixed together by snapping.

[0013] The splicing unit is a cube.

[0014] The length of each side of the splicing unit is 1 cm.

[0015] The included angle between the guide hole and the vertical line of the bottom surface of the splicing unit is achieved in two ways:

[0016] In the first type, a joining surface between the first unit body and the second unit body is perpendicular to a bottom surface of the joining unit, and an angle between the guide hole and a center line of the joining surface is in a range of -45° to 45°.

[0017] In the second embodiment, a joining surface between the first unit body and the second unit body and a bottom surface of the joining unit form an angle of -45° to 45°, and the guide hole is located on a center line of the joining surface.

[0018] The present invention is a splicing unit of a puncture guide template, which itself is a unit body with a very small volume. It can be spliced ​​into a flat template, an adjustable angle template and an individualized template. The present invention integrates the design and application concepts of all existing guiding devices, and one device has multiple functions. The traditional flat template can be formed by combining the single planes of the splicing units, and the size and thickness of the template can be controlled by the number of assembled splicing units. It is more convenient to use than a flat template of a fixed size. After the device is assembled into a flat template, each guiding position can use a splicing unit with guide holes at different angles, and each splicing unit can adjust the direction, which has the function of an adjustable angle template. The assembled multiple planes can be assembled together at different angles to achieve several planes on a large template, which can meet the requirements of individualized needle distribution to the maximum extent. At the same time, in addition to adjusting the direction in the left and right directions, the splicing unit can also adjust the direction in the head and foot directions to achieve non-coplanar puncture tasks. In addition, when the direction of the puncture needle needs to be adjusted significantly during surgery, the splicing unit can be disassembled to separate the first unit from the second unit, thereby dividing the guide hole into two parts, freeing the implant needle, and replacing the splicing unit for large-angle adjustment. Compared with 3D printing templates, this template can also be individually designed according to the patient's condition, and then the units are assembled into the required template shape. After the operation, each unit can be disinfected and reassembled into other shape templates for continued use, greatly reducing the waste of medical resources.

[0019] Advantages of this patent: 1. It can be combined into a flat template of any size for use. 2. The direction of each needle channel is adjustable, and it has the function of an adjustable angle template. 3. The template size, shape and puncture needle angle can be individually designed, and it can guide coplanar and non-coplanar needle channels at the same time, and has some functions of 3D printing templates. 4. During surgery, the angle of each puncture needle can be adjusted according to actual conditions. 5. The needle channel guide hole unit of each needle is detachable. 6. The template can be designed, assembled and modified on-site during surgery, which is more flexible than 3D printing templates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the first structure of the present invention.

[0021] Figure 2 yes Figure 1 Schematic diagram after disassembly.

[0022] Figure 3 It is a schematic diagram of the second structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the present invention being spliced ​​into a flat template.

[0024] Figure 5 It is a schematic diagram of the present invention being spliced ​​into an angle-adjustable template.

[0025] Figure 6 It is a schematic diagram of the present invention splicing into individualized templates.

[0026] In the figure: 1. splicing unit; 2. first unit body; 3. second unit body; 4. fixing protrusion; 5. fixing groove; 6. guide hole; 7. first guide groove; 8. second guide groove; 9. plug-in groove; 10. plug-in protrusion; 11. plane template; 12. adjustable angle template; 13. individualized template. DETAILED DESCRIPTION

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention includes a first unit body 2 and a second unit body 3, which are spliced ​​into a complete splicing unit 1. The splicing unit 1 is a rectangular parallelepiped, and fixing protrusions 4 are respectively provided on three surfaces of the splicing unit 1. The surfaces where the three fixing protrusions 4 are located are respectively adjacent to each other. Fixing grooves 5 are respectively provided on the other three surfaces of the splicing unit 1. A guide hole 6 is opened on the splicing unit 1 and passes through from the bottom surface to the top surface. The guide hole 6 is located on the splicing surface of the first unit body 2 and the second unit body 3.

[0028] The guide hole 6 is located on the joint surface of the first unit body 2 and the second unit body 3, and is formed by the first unit body 2 and the second unit body 3. A first guide groove 7 is formed on the first unit body 2, and a second guide groove 8 is formed on the second unit body 3. The positions of the two guide grooves correspond to each other, and the first guide groove 7 and the second guide groove 8 are matched to form the guide hole 6.

[0029] The guide hole 6 has different diameters and angles to suit different puncture needles and requirements for puncture at different angles. The guide hole 6 forms an angle of -45° to 45° with the vertical line of the bottom surface of the splicing unit 1. There are several groups of splicing units 1, and the angle between the guide hole 6 of each group of splicing units 1 and the vertical line of the bottom surface gradually changes from -45° to 45°, with a range of 0.5° to 2°. For more precise occasions, an angle can be set every 0.5° from -45° to 45°. For occasions that do not require high precision, an angle can be set every 1° or even 2°. During surgery, splicing units 1 with guide holes of corresponding angles can be set at different positions according to the needle tract angle designed in the preoperative plan or according to the actual situation during the operation.

[0030] A plug-in groove 9 or a plug-in protrusion 10 is respectively provided on the splicing surface of the first unit body 2 and the splicing surface of the second unit body 3. The plug-in groove 9 and the plug-in protrusion 10 are both in the shape of long strips. The plug-in groove 9 or the plug-in protrusion 10 is located on both sides of the guide hole 6. The plug-in protrusion 10 is plugged into the plug-in groove 9 to connect the first unit body 2 and the second unit body 3 together. The cross-section of the connecting groove and the cross-section of the connecting protrusion can be a part of a circle, a part of an ellipse, a trapezoid or a dovetail shape, and the entire connecting groove and the connecting protrusion can be a gradient shape with a small upper end and a large lower end, so as to facilitate the separation of the first unit body 2 and the second unit body 3.

[0031] The fixing protrusion 4 is a protruding oblate spheroid, and the fixing groove 5 is a concave oblate spheroid. The fixing protrusion 4 on one splicing unit 1 is fixed together with the fixing groove 5 on another splicing unit 1 by snapping. The fixing protrusion 4 and the fixing groove 5 can also be other shapes, as long as the fixing protrusion 4 can be snapped into the fixing groove 5 when a certain force is applied, and the fixing protrusion 4 can be removed from the groove when an opposite force is applied. At the same time, the fixing groove 5 and the fixing protrusion 4 must be symmetrical along the axis, and the fixing groove 5 and the fixing protrusion 4 are located at the center of the plane, and the two adjacent splicing units 1 can rotate relative to each other around the axis of the fixing groove 5 and the fixing protrusion 4.

[0032] The included angle between the guide hole 6 and the vertical line of the bottom surface of the splicing unit 1 is achieved in two ways:

[0033] The first one, such as Figure 1 and Figure 2 As shown, the joint surface of the first unit body 2 and the second unit body 3 is perpendicular to the bottom surface of the joint unit 1, and the guide hole 6 forms an angle of -45° to 45° with the center line of the joint surface. In this way, the first unit body 2 and the second unit body 3 are both rectangular parallelepipeds, and the angle of the guide hole 6 changes on the joint surface. However, since the joint surface is provided with a plug-in protrusion 10 and a plug-in groove 9, when the width of the joint surface is not wide enough, interference may occur between the plug-in protrusion 10 or the plug-in groove 9 and the inclined guide hole 6.

[0034] The second type, such as Figure 3 As shown, the joint surface of the first unit body 2 and the second unit body 3 and the bottom surface of the joint unit 1 are at an angle of -45° to 45°, and the guide hole 6 is on the center line of the joint surface. In this way, the angle of the guide hole 6 is achieved by the angle of the joint surface itself. The length direction of the plug-in protrusion 10 and the plug-in groove 9 is the same as the direction of the guide hole 6. Since the guide hole 6 is parallel to the plug-in protrusion 10 or the plug-in groove 9, no interference will occur, and the joint surface can be any angle between -45° and 45° with the bottom surface.

[0035] Generally, the splicing unit 1 is made into a cube, and the splicing surface can just form an angle of -45° to 45° with the bottom surface of the splicing unit 1. Since the lengths of the edges of the splicing unit 1 are the same, the splicing unit 1 can still be spliced ​​to the template after rotating 90° at some positions of the template, so as to realize flexible adjustment of the angle of the guide hole 6. The length of each side of the splicing unit 1 is generally 1 cm.

[0036] like Figure 4 As shown, the splicing units 1 are sequentially connected to form a plurality of unit strips of the same length, and the plurality of unit strips are connected in parallel to form a plane template 11, and the guide holes 6 of all the splicing units 1 are directed from the bottom surface of the plane template 11 to the top surface of the plane template 11. If the single-layer plane template 11 is relatively thin, one or more layers of the plane template 11 can be superimposed on the single-layer plane template 11. After the required plane template 11 is formed, a fixing frame or fixing strip is installed around and on both sides of the plane template 11 to reinforce the plane template 11. The plane made by the present invention can realize the function of the existing plane template 11, and after the plane template 11 is made, it can be connected to the template guide bracket sold on the market.

[0037] like Figure 5 As shown, the splicing units 1 are sequentially connected to form a plurality of unit strips, and then a guide unit is installed between two adjacent unit strips every other splicing unit 1, so as to assemble an adjustable angle template 12. In the adjustable angle template 12, many splicing units 1 have only two opposite faces connected to other splicing units 1, and such splicing units 1 can rotate around the axis of the connecting protrusions or connecting grooves involved in the connection, so as to achieve angle adjustment. The angle adjustment function of the adjustable angle template 12 can also be combined with the angle adjustment function of the splicing unit 1 itself, for example: the left and right sides of the splicing unit 1 at a certain position are connected to other splicing units 1, so that the splicing unit 1 can only rotate in the front-to-back direction to achieve the front-to-back direction adjustment of the guide hole 6, but at the same time, the guide hole 6 of the splicing unit 1 itself has a certain angle in the left-right direction, and replacing different splicing units 1 can achieve the angle adjustment of the guide hole 6 in the left-right direction, so that the guide hole 6 of any angle can be obtained, thereby meeting the requirements for different puncture angles during puncture. If the direction of a puncture needle needs to be adjusted during surgery, first check whether rotating the corresponding splicing unit 1 can achieve this. If rotating the splicing unit 1 cannot be achieved, remove the splicing unit 1, free the puncture needle, replace the splicing unit 1 and adjust the angle of the guide hole 6.

[0038] like Figure 6As shown, the individualized template 13 generally has several planes in different directions. First, the unit strips or plane templates 11 spliced ​​by the splicing units 1 are assembled together at the required angles, and the rotatable splicing units 1 are rotated to adjust the directions of the guide holes 6, so as to achieve the personalized needs. For more complex individualized templates 13, simulation modeling can be performed by computer first, the positions and angles of the individual splicing units 1 can be calculated, and the required personalized template can be obtained by assembling according to the scheme provided by the computer.

[0039] The above various puncture guide templates can be reused after use. Each splicing unit 1 is disassembled, fully cleaned and disinfected, and stored in a sterile environment. The next time it is used, it can be spliced ​​into the required template shape and continued to be used. While meeting the needs of puncture surgery, it can greatly reduce the waste of medical resources. This splicing unit 1 has a great degree of freedom and can be spliced ​​into many shapes to meet various needs in puncture surgery.

Claims

1. A puncture guide splicing unit, characterized in that: The splicing unit comprises a first unit body and a second unit body, wherein the first unit body and the second unit body are spliced ​​into a complete splicing unit, the splicing unit is a cuboid, three surfaces of the splicing unit are respectively provided with fixing protrusions, the surfaces where the three fixing protrusions are located are respectively adjacent to each other, the other three surfaces of the splicing unit are respectively provided with fixing grooves, a guide hole is opened on the splicing unit from the bottom surface to the top surface, and the guide hole is located on the splicing surface of the first unit body and the second unit body; The guide hole is formed by a first guide groove located on the splicing surface of the first unit body and a second guide groove located on the splicing surface of the second unit body; the guide hole and the vertical line of the bottom surface of the splicing unit are at an angle of -45° to 45°, and there are a total of several groups of splicing units. The angle between the guide hole of each group of splicing units and the vertical line of the bottom surface gradually changes from -45° to 45°, and the change range is between 0.5° and 2°; The fixing protrusion is in the shape of a protruding oblate sphere, and the fixing groove is in the shape of a concave oblate sphere. The fixing protrusion on one splicing unit and the fixing groove on another splicing unit are fixed together by snapping.

2. The puncture guide splicing unit according to claim 1, characterized in that: An inserting groove or an inserting protrusion is respectively arranged on the splicing surface of the first unit body and the splicing surface of the second unit body. The inserting groove and the inserting protrusion are both strip-shaped. The inserting protrusion is inserted into the inserting groove to connect the first unit body and the second unit body together.

3. The puncture guide splicing unit according to claim 1, characterized in that: The splicing unit is a cube.

4. The puncture guide splicing unit according to claim 3, characterized in that: The length of each side of the splicing unit is 1 cm.

5. The puncture guide splicing unit according to claim 1, characterized in that: The joining surface of the first unit body and the second unit body is perpendicular to the bottom surface of the joining unit, and the guide hole and the center line of the joining surface form an angle of -45° to 45°.

6. The puncture guide splicing unit according to claim 1, characterized in that: An angle between the joint surface of the first unit body and the second unit body and the bottom surface of the joint unit is between -45° and 45°, and the guide hole is on the center line of the joint surface.

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