A puncture positioning guide plate

Abstract

The utility model provides a kind of auxiliary puncture positioning guide plate, it is related to medical navigation technical field, including substrate and guide portion, substrate includes positioning surface, and positioning surface is equipped with at least two positioning patches, guide portion is equipped with guide hole, the axis of guide hole is perpendicular to the plane where positioning surface is located, guide portion is equipped with upper extension section and lower extension section along axis direction, and upper extension section and lower extension section are projected on the positioning surface and lower surface of substrate respectively.The structure design of substrate cooperation positioning patch is adopted, substrate provides installation position for positioning patch, so that the size of overall structure can be maintained in smaller range, it is convenient for doctor to operate, two positioning patches can be used to determine the spatial position of substrate, to match with the surgical planning path in medical navigation system;Guide hole is perpendicular to positioning surface, it is convenient for doctor to observe positioning surface;Upper extension section and lower extension section of guide portion can guarantee the length of guide hole.

Description

Technical Field

[0001] This utility model relates to the field of medical navigation technology, and in particular to an auxiliary puncture positioning guide plate. Background Technology

[0002] In the field of medical navigation, when using auxiliary devices such as AR glasses for visual positioning, it is necessary to set positioning markers on the patient's body. By obtaining the position information of the positioning markers, the AR glasses and other auxiliary devices can match the positions of various AR elements in the AR glasses with the patient's body, thereby accurately positioning various AR elements on the patient's body and assisting the doctor's operation.

[0003] Existing auxiliary positioning markers are generally positioning balls, multiple positioning balls are used in combination and fixedly connected by a mechanical frame, and then the mechanical frame is fixed to the patient's body. Assistive devices such as AR glasses obtain the position information of these positioning balls and match the position of various AR elements with the patient's body.

[0004] The problem with using a positioning ball as an auxiliary positioning marker is that the ball is relatively large, takes up a lot of space, and can easily obstruct the doctor's field of vision, thus affecting the doctor's operation. Furthermore, the positioning ball needs to be used in conjunction with a mechanical frame, which further increases the overall space and weight required, making the operation more difficult for the doctor. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary puncture positioning guide plate to solve the problem of inconvenient use of auxiliary positioning marks in the prior art.

[0006] This utility model provides an auxiliary puncture positioning guide plate, including a base plate and a guide portion. The base plate includes a positioning surface, and the positioning surface is provided with at least two positioning patches. The guide portion is provided with a guide hole, the axis of which is perpendicular to the plane where the positioning surface is located. The guide portion is provided with an upper extension section and a lower extension section along the axial direction, and the upper extension section and the lower extension section protrude from the positioning surface and the lower surface of the base plate, respectively.

[0007] In an optional embodiment, the positioning surface is provided with a positioning groove that matches the shape of the positioning patch, and the positioning patch is disposed in the positioning groove.

[0008] In an optional implementation, the upper surface of the positioning patch is coplanar with the upper surface of the positioning surface.

[0009] In an optional implementation, the positioning surface is provided with at least three circular positioning patches, and the three circular positioning patches are not collinear.

[0010] In an optional implementation, at least one positioning patch has an orientation feature.

[0011] In an optional embodiment, the guide portion is located in the middle of the substrate, and the substrate is also provided with an observation window.

[0012] In an optional embodiment, the observation window is a hole penetrating the substrate; or, the observation window is a transparent material disposed on the substrate.

[0013] In an optional embodiment, reinforcing ribs are also provided between the guide portion and the substrate.

[0014] In an optional embodiment, the outer surface of the reinforcing rib is a concave arc surface.

[0015] In an optional embodiment, a transition portion is further provided between the reinforcing rib and the substrate, and the outer side of the transition portion is smoothly connected to the outer side of the reinforcing rib.

[0016] The auxiliary puncture positioning guide plate provided by this utility model has the following beneficial effects:

[0017] 1. The structure design adopts a base plate combined with a positioning patch. The base plate provides an installation position for the positioning patch. The positioning patch is small in size, which allows the overall structure to be kept within a small range, making it easy for doctors to operate. At the same time, the positioning patch can also be recognized by the medical navigation system, which can achieve the effect of medical navigation.

[0018] 2. The substrate is provided with at least two positioning patches. After the medical navigation system recognizes the two positioning patches, the three-dimensional coordinates of the two positioning patches can be used to determine the spatial position of the substrate, thereby matching it with the surgical planning path in the medical navigation system and performing assisted puncture by the medical navigation system.

[0019] 3. The axis of the guide hole is perpendicular to the plane of the positioning surface, which makes it easy for doctors to visually judge and estimate the angle or direction of the guide hole by observing the positioning surface;

[0020] 4. The upper and lower extensions of the guide section protrude from the positioning surface and lower surface of the substrate, respectively, which can ensure the length of the guide hole and thus ensure a better guiding effect on the puncture needle. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 One of the three-dimensional structural schematic diagrams of the auxiliary puncture positioning guide plate provided in the embodiment of this utility model;

[0023] Figure 2 A second three-dimensional structural schematic diagram of the auxiliary puncture positioning guide plate provided in an embodiment of this utility model;

[0024] Figure 3 A top view of the auxiliary puncture positioning guide plate provided in an embodiment of this utility model;

[0025] Figure 4 A side view of the auxiliary puncture positioning guide plate provided in an embodiment of this utility model;

[0026] Figure 5 A side cross-sectional view of the auxiliary puncture positioning guide plate provided in an embodiment of this utility model.

[0027] Explanation of main component symbols: 100-substrate; 110-positioning surface; 111-positioning groove; 120-observation window; 200-guide section; 210-guide hole; 220-upper extension section; 230-lower extension section; 300-positioning patch; 400-reinforcing rib; 500-transition section. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] This utility model embodiment provides an auxiliary puncture positioning guide plate, such as Figures 1 to 5 As shown, the substrate includes a substrate 100 and a guide portion 200. The substrate 100 includes a positioning surface 110, which is provided with at least two positioning patches 300. The guide portion 200 is provided with a guide hole 210, the axis of which is perpendicular to the plane of the positioning surface 110. The guide portion 200 is provided with an upper extension 220 and a lower extension 230 along the axial direction, which protrude from the positioning surface 110 and the lower surface of the substrate 100, respectively.

[0036] in, Figure 1 One of the three-dimensional structural schematic diagrams of the auxiliary puncture positioning guide plate provided in the embodiment of this utility model is a three-dimensional structural schematic diagram viewed from above the substrate 100. Figure 2The second three-dimensional structural schematic diagram of the auxiliary puncture positioning guide plate provided in the embodiment of this utility model is a three-dimensional structural schematic diagram viewed from below the substrate 100. Figure 3 A top view of the auxiliary puncture positioning guide plate provided in an embodiment of this utility model; Figure 4 A side view of the auxiliary puncture positioning guide plate provided in an embodiment of this utility model; Figure 5 A side cross-sectional view of the auxiliary puncture positioning guide plate provided in an embodiment of this utility model.

[0037] In use, the operator can hold the base plate 100 and use it in conjunction with the medical navigation system. The visual recognition module of the medical navigation system can identify the positioning patch 300 and match the surgical path planning provided by the medical navigation system with the positioning patch 300 on the base plate 100. This allows the guide hole 210 to be aligned with the predetermined puncture path, and the puncture needle is inserted through the guide hole 210 for puncture. When the operator holds the base plate 100, the positioning surface 110 of the base plate 100 faces the operator, the lower surface of the base plate 100 faces the patient, and the lower end of the lower extension 230 of the guide portion 200 abuts against the patient. The medical navigation system can identify the positioning patch 300 on the substrate 100 and form visual elements within the operator's field of vision through AR, VR or MR devices. The visual elements are the surgical plan. The operator can move the substrate 100 and match the positioning patch 300 on the substrate 100 with the visual elements, so that the guide hole 210 of the guide part 200 coincides with the visual elements, thereby determining the position of the guide hole 210. The guide hole 210 can limit the position and angle of the puncture needle to achieve assisted puncture.

[0038] For example, the positioning patch 300 may include a reflective layer that can be observed by a medical navigation device. This reflective layer can be configured to reflect infrared light, and the medical navigation system can then use an infrared acquisition module to obtain the position information of the positioning patch 300. Alternatively, the positioning patch 300 may also be identifiable through a magnetic coating. Other types of positioning patches 300 will not be described in detail here.

[0039] The auxiliary puncture positioning guide provided in this embodiment has the following beneficial effects:

[0040] 1. The structure design adopts a substrate 100 and a positioning patch 300. The substrate 100 provides an installation position for the positioning patch 300. The positioning patch 300 is small in size, which allows the overall structure to be kept within a small range, making it easy for doctors to operate. At the same time, the positioning patch 300 can also be recognized by the medical navigation system, which can achieve the effect of medical navigation.

[0041] 2. At least two positioning patches 300 are provided on the substrate 100. After the two positioning patches 300 are identified by the medical navigation system, the three-dimensional coordinates of the two positioning patches 300 can be used to determine the spatial position of the substrate 100, thereby matching it with the surgical planning path in the medical navigation system and performing assisted puncture by the medical navigation system.

[0042] 3. The axis of the guide hole 210 is perpendicular to the plane where the positioning surface 110 is located, which makes it easy for doctors to intuitively judge and estimate the angle or direction of the guide hole 210 by observing the positioning surface 110;

[0043] 4. The upper extension 220 and the lower extension 230 of the guide portion 200 protrude from the positioning surface 110 and the lower surface of the substrate 100, respectively, which can ensure the length of the guide hole 210, thereby ensuring a better guiding effect on the puncture needle.

[0044] In some embodiments, such as Figure 1 and Figure 3 As shown, the positioning surface 110 has a positioning groove 111 that matches the shape of the positioning patch 300, and the positioning patch 300 is disposed within the positioning groove 111. Figure 1 The positioning patch 300 was not shown; instead, the positioning groove 111 was shown. Figure 2 The image shows the positioning patch 300 installed in the groove.

[0045] The matching design of the positioning groove 111 precisely defines the installation position of the positioning patch 300, avoiding navigation system recognition errors caused by misalignment of the positioning patch 300. The physical constraint of the groove prevents the positioning patch 300 from shifting due to external forces or friction during operation, thereby ensuring the stability of the spatial coordinate calculation of the substrate 100. In addition, the embedded fit between the groove and the patch reduces the overall structural thickness, further minimizing obstruction of the doctor's field of vision.

[0046] The positioning patch 300 can be installed in the positioning groove 111 by adhesive bonding, or the positioning patch 300 can be installed in the positioning groove 111 by interference fit.

[0047] In some embodiments, the upper surface of the positioning patch 300 is coplanar with the upper surface of the positioning surface 110.

[0048] The coplanar design eliminates the height difference between the positioning patch 300 and the substrate 100, keeping the substrate 100 surface smooth and preventing protrusions or depressions from interfering with the doctor's grip or the movement path of the puncture needle. Simultaneously, the flat surface of the substrate 100 is easier to clean and disinfect, reducing the risk of bacterial residue. From the perspective of navigation system recognition, the coplanar structure reduces image distortion caused by height differences, improving the accuracy of feature point extraction from the positioning patch 300.

[0049] In some embodiments, such as Figure 1 and Figure 3 As shown, the positioning surface 110 is provided with at least three circular positioning patches 300, and any three circular positioning patches 300 are not collinear.

[0050] Three non-collinear positioning patches 300, using the principle of spatial three-point positioning, can uniquely determine the planar spatial position and attitude angle of the substrate 100. The symmetrical nature of the circular patches ensures that they can be stably identified by the navigation system from different viewing angles, enhancing robustness. The non-collinear layout avoids attitude calculation ambiguity caused by collinearity, ensuring that the navigation system can accurately match the surgical planning path with the actual spatial orientation of the guide plate.

[0051] By using a circular positioning patch 300, only the center position of the circular positioning patch 300 needs to be calculated. The circular shape makes it easy to determine the center position, and the algorithm is simple and less prone to errors.

[0052] exist Figure 1 and Figure 3 In the embodiments shown, four circular positioning patches 300 are provided. Since any three of the circular positioning patches 300 are not collinear, the planar spatial position and attitude angle of the substrate 100 can be determined based on any three positioning patches 300. The additional positioning patches 300 can be used for verification on the one hand, and can also avoid unexpected situations such as damage to the positioning patches 300 or failure to be identified on the other hand.

[0053] In some embodiments, such as Figure 1 and Figure 3 As shown, at least one positioning patch 300 has an orientation feature in its shape.

[0054] The positioning patch 300 with orientation features can provide a direction reference for the navigation system, simplifying the coordinate system alignment process. For example, asymmetrical shapes or specific patterns can be quickly determined by image recognition algorithms to determine the rotation angle of the substrate 100, reducing system calibration time. This feature significantly improves operational efficiency, especially when the guide plate needs frequent orientation adjustments.

[0055] Meanwhile, the positioning patch 300 with orientation features can reduce the number of positioning patches 300. Two positioning patches 300 are sufficient to determine the spatial coordinates. The orientation features of the positioning patch 300 can be used as additional information.

[0056] exist Figure 1 and Figure 3 The illustrated embodiment uses triangular and rectangular positioning patches 300, but in other embodiments, other non-circular shapes can be provided as needed.

[0057] In addition, such as Figure 1and Figure 3 As shown, the positioning patch 300 with directional features can be used in combination with the circular positioning patch 300, thereby obtaining the advantages of both types of positioning patches 300 at the same time.

[0058] In some embodiments, such as Figure 1 and Figure 3 As shown, the guide portion 200 is located in the middle of the substrate 100, and the substrate 100 is also provided with an observation window 120.

[0059] The observation window 120 allows doctors to directly visualize the puncture area, achieving dual verification through a combination of virtual and real-world verification, combined with the overlay of the navigation system's virtual path. The guide section 200, located in the center, balances the guide plate's center of gravity, preventing instability caused by offset. Furthermore, the central layout ensures a symmetrical distance between the guide hole 210 and the edge of the base plate 100, reducing angular deviation of the puncture needle due to leverage.

[0060] In some embodiments, such as Figure 1 and Figure 3 As shown, the observation window 120 is a through-hole that penetrates the substrate 100. The through-hole design provides an unobstructed view, allowing doctors to directly observe the position of the lower extension 230 and enhancing the intuitiveness of the operation.

[0061] In other embodiments, the viewing window 120 is a transparent material disposed on the substrate 100. The transparent material allows for visual penetration while maintaining structural integrity, preventing debris or liquid from penetrating the substrate 100. The transparent material can be, for example, medical-grade polycarbonate.

[0062] Multiple observation windows 120 can be set, such as Figure 1 and Figure 3 The four shown are symmetrically arranged around the guide portion 200, thereby providing a wider field of view. Even if the base plate 100 is rotated at multiple angles, it is still convenient for doctors to observe through the observation window 120.

[0063] In some embodiments, such as Figure 2 and Figure 4 As shown, a reinforcing rib 400 is also provided between the guide portion 200 and the substrate 100.

[0064] The reinforcing rib 400 significantly improves structural rigidity by increasing the cross-sectional area of ​​the connection region between the guide portion 200 and the substrate 100, preventing the guide portion 200 from bending or vibrating under stress during puncture. Increased rigidity ensures the consistency of the guide hole 210 axis with the planned path, avoiding puncture angle deviations caused by deformation. Furthermore, the reinforcing rib 400 can disperse stress and extend the service life of the guide plate.

[0065] The base of the reinforcing rib 400 can also form a structure connecting the guide portion 200 and the substrate 100. The reinforcing rib 400 can enhance the strength of the connection structure between the guide portion 200 and the substrate 100.

[0066] Combination Figures 1 to 4 As shown, the observation window 120 is a hole that penetrates the substrate 100. The reinforcing rib 400 can form a wall that separates each observation window 120, thereby maintaining the structural strength of the substrate 100 and the connection strength between the substrate 100 and the guide portion 200 when the observation window 120 is provided.

[0067] In some embodiments, such as Figure 2 and Figure 4 As shown, the outer surface of the reinforcing rib 400 is a concave arc surface.

[0068] The concave-arc surface design optimizes stress distribution, reduces stress concentration at the connection between the rib and the base plate 100, and lowers the risk of fatigue fracture. The curved contour is also ergonomic, allowing the doctor's fingers to fit more closely to the guide plate's contact surface, improving operational comfort. Furthermore, when applied to areas with significant deformation, such as the patient's abdomen, it provides greater flexibility to accommodate skin deformation. Simultaneously, the concave-arc surface reduces the overall weight of the guide plate, further optimizing operational flexibility.

[0069] In some embodiments, a transition portion 500 is provided between the reinforcing rib 400 and the substrate 100, and the outer side of the transition portion 500 is smoothly connected to the outer side of the reinforcing rib 400.

[0070] The transition section 500 can increase the strength of the connection structure between the base plate 100 and the reinforcing rib 400. At the same time, the continuous curved surface transition can reduce the foreign body sensation of patients or operators. Furthermore, the continuous curved surface transition can reduce stress abrupt changes and improve the impact resistance of the structure.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An auxiliary puncture positioning guide plate, characterized in that, The system includes a substrate (100) and a guide portion (200). The substrate (100) includes a positioning surface (110) with at least two positioning patches (300). The guide portion (200) has a guide hole (210) with the axis of the guide hole (210) perpendicular to the plane of the positioning surface (110). The guide portion (200) has an upper extension (220) and a lower extension (230) along the axial direction, with the upper extension (220) and the lower extension (230) protruding from the positioning surface (110) and the lower surface of the substrate (100), respectively.

2. The auxiliary puncture positioning guide plate according to claim 1, characterized in that, The positioning surface (110) is provided with a positioning groove (111) that matches the shape of the positioning patch (300), and the positioning patch (300) is disposed in the positioning groove (111).

3. The auxiliary puncture positioning guide plate according to claim 2, characterized in that, The upper surface of the positioning patch (300) is coplanar with the upper surface of the positioning surface (110).

4. The auxiliary puncture positioning guide plate according to claim 1, characterized in that, The positioning surface (110) is provided with at least three circular positioning patches (300), and any three circular positioning patches (300) are not collinear.

5. The auxiliary puncture positioning guide plate according to claim 1, characterized in that, At least one of the positioning patches (300) has an orientation feature.

6. The auxiliary puncture positioning guide plate according to claim 1, characterized in that, The guide portion (200) is located in the middle of the substrate (100), and the substrate (100) is also provided with an observation window (120).

7. The auxiliary puncture positioning guide plate according to claim 6, characterized in that, The observation window (120) is a hole that penetrates the substrate (100); or, the observation window (120) is a transparent material disposed on the substrate (100).

8. The auxiliary puncture positioning guide plate according to claim 6, characterized in that, A reinforcing rib (400) is also provided between the guide portion (200) and the substrate (100).

9. The auxiliary puncture positioning guide plate according to claim 8, characterized in that, The outer surface of the reinforcing rib (400) is a concave arc surface.

10. The auxiliary puncture positioning guide plate according to claim 9, characterized in that, A transition portion (500) is provided between the reinforcing rib (400) and the substrate (100), and the outer side of the transition portion (500) is smoothly connected to the outer side of the reinforcing rib (400).

Images