Puncture assembly with navigation function

Abstract

The utility model belongs to the field of medical apparatus and instruments, concretely relates to a puncture assembly with navigation function, include: the sheath, the tubular of hollow, the outer peripheral wall of its proximal end sets handle, the needle body, the movable puncture in the sheath, the proximal end of needle body sets needle handle to detachable connection handle, electromagnetic navigation component, it includes electromagnetic positioning sensor selectable connection to the needle body or the sheath, optical navigation component, it includes reference frame and the optical mark connected to the reference frame, the reference frame fixed connection on handle. The puncture assembly can utilize optical navigation component and / or electromagnetic navigation component and carry out positioning, its anti -interference ability is strong, can guarantee the accuracy of puncture assembly positioning. The reference frame and optical mark of optical navigation component are connected to the sheath, so that after the needle body removes the sheath, optical navigation component can continuously position puncture assembly, guarantee the accuracy and safety of operation.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a puncture component with navigation function. Background Technology

[0002] Navigation-guided puncture devices are important tools in modern medicine that combine image guidance and precise positioning technology. The puncture components of a navigation-guided puncture device typically include an outer sheath and a needle body, with the navigation component usually mounted on the needle body. During operation, the outer sheath and needle body are precisely punctured to the target location with the assistance of the navigation component. Then, the outer sheath is held in a fixed position, and the surgery can be performed using the existing puncture site or by changing to a different needle body, effectively improving the accuracy and safety of the puncture procedure.

[0003] However, the current navigation puncture component has the following problems:

[0004] 1. Conventional navigation components have limited navigation methods and are easily affected by interference, which can lead to failure and affect the accuracy of puncture operations.

[0005] 2. Since the navigation component is located on the needle body, it cannot maintain its position after the needle body is removed from the outer sheath, which affects the accuracy and safety of the surgical procedure.

[0006] 3. For optical navigation components that use optical navigation technology, they use an optical camera to receive infrared light reflected by a reflector ball. However, the reflector ball has problems such as poor and uneven brightness of the reflected light, rough surface that easily collects dust, and complex surface coating process that is easy to peel off. Utility Model Content

[0007] Based on this, the present invention provides a puncture component with navigation function to solve the problems of traditional navigation components being unable to continuously locate and being prone to failure due to interference.

[0008] A puncture assembly with navigation function according to an embodiment of the present invention includes:

[0009] The outer sheath is a hollow tube with a handle on its proximal outer peripheral wall.

[0010] The needle body is movably inserted into the outer sheath, and a needle handle is provided at the proximal end of the needle body to be detachably connected to the handle.

[0011] An electromagnetic navigation component, comprising an electromagnetic positioning sensor selectively connected to the needle body or the outer sheath;

[0012] An optical navigation component includes a reference frame and optical markers connected to the reference frame, the reference frame being fixedly connected to the handle.

[0013] In some embodiments, the optical marker is a light-emitting LED bead.

[0014] In some embodiments, the reference frame includes a support body and multiple branches. The support body is fixedly connected to a handle, and the fixed ends of the multiple branches are connected to the support body. The top of the free ends of the multiple branches are provided with grooves to mount the optical markers, and the top of the optical markers is lower than the opening of the grooves.

[0015] In some embodiments, the optical marker surface is provided with a rigid and transparent cover layer, which is a rigid transparent silicone.

[0016] In some embodiments, when the electromagnetic positioning sensor is connected to the outer sheath, the electromagnetic positioning sensor is disposed on the reference frame.

[0017] In some embodiments, when the electromagnetic positioning sensor is connected to the needle body, the electromagnetic positioning sensor is embedded in the interior of the needle body near the distal end.

[0018] In some embodiments, the two ends of the needle handle are rotationally symmetrical arc-shaped contours, and a locking block is provided on the arc-shaped contours; a receiving groove for accommodating the needle handle is provided on the handle, and a locking slot adapted to the locking block is provided on the groove wall of the receiving groove; the needle handle is rotatably disposed in the receiving groove, so that the locking block can move into or out of the locking slot.

[0019] In some embodiments, a first limiting protrusion is provided in the card slot, and a second limiting protrusion is provided on the card block. The first limiting protrusion and the second limiting protrusion cooperate to restrict the card block from moving out of the card slot.

[0020] In some embodiments, the receiving groove is further provided with an annular protrusion, which is coaxially arranged and communicates with the outer sheath tube, and the needle handle is provided with a slot adapted to the annular protrusion, so that the slot is rotatably sleeved on the outer periphery of the annular protrusion.

[0021] In some embodiments, the outer peripheral wall of the annular protrusion is provided with external threads to connect to an external pipe.

[0022] The puncture assembly with navigation function of this invention can be positioned using optical navigation components and / or electromagnetic navigation components. This overcomes the problem of optical navigation components being easily blocked by non-transparent objects, and also solves the problem of positioning drift caused by interference with electromagnetic navigation components, thus ensuring the accuracy of the puncture assembly's positioning. The reference frame and optical markers of the optical navigation component are connected to the outer sheath, allowing the optical navigation component to continuously position the puncture assembly after the needle is removed from the outer sheath, ensuring the accuracy and safety of the surgery. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the puncture component with navigation function in this embodiment;

[0024] Figure 2 A schematic diagram of the outer sheath and optical navigation components at one angle;

[0025] Figure 3 This is a structural schematic diagram of the outer sheath and optical navigation components from another angle.

[0026] Figure 4 A structural diagram showing the handle and needle body at one angle;

[0027] Figure 5 A structural diagram of the handle and needle body from another angle;

[0028] Figure 6 A cross-sectional structural diagram of the assembly of the handle and needle shank;

[0029] Figure 7 This is a structural diagram of the assembly of the card block and card slot.

[0030] In the figure: outer sheath tube 100; handle 200; receiving groove 210; slot 220; annular protrusion 230; first limiting protrusion 240; needle body 300; needle handle 400; locking block 410; second limiting protrusion 420; slot 430; electromagnetic positioning sensor 500; reference frame 600; support body 601; branch 602; groove 603; optical mark 620. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0033] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They 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, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] like Figures 1-3 As shown, this embodiment provides a puncture assembly with navigation function, including an outer sheath 100, a needle body 300, and a navigation system. The outer sheath 100 is a hollow tube, and a handle 200 is provided on the outer peripheral wall of its proximal end. The needle body 300 is movably inserted into the outer sheath 100, and a needle shank 400 is provided at the proximal end of the needle body 300 to be detachably connected to the handle 200. The assembly includes an optical navigation component and an electromagnetic navigation component. The optical navigation component includes a reference frame 600 and an optical marker 620 connected to the reference frame 600. The reference frame 600 is fixedly connected to the handle 200, such that the reference frame 600 and the optical marker 620 are connected to the outer sheath 100. The electromagnetic navigation component includes an electromagnetic positioning sensor 500, which can be selectively connected to either the needle body 300 or the outer sheath 100.

[0035] It should be noted that, specifically, the needle body 300 being movably inserted into the outer sheath 100 in this embodiment means that the needle body 300 can rotate circumferentially and move axially relative to the outer sheath 100. The principles by which the optical navigation component and electromagnetic navigation component locate the object are existing technologies. The optical navigation component first uses an optical camera to receive light from the optical mark 620 for image processing, then calculates the position information of the optical mark 620 based on the image, and finally calculates the spatial position of the puncture assembly based on the position information of the optical mark 620. The electromagnetic navigation component determines the position of the electromagnetic positioning sensor 500 through a magnetic field. When the magnetic field passes through the electromagnetic positioning sensor 500, the electromagnetic positioning sensor 500 generates an electrical signal. The electromagnetic navigation component first calculates the position information of the electromagnetic positioning sensor 500 based on this electrical signal, and then calculates the spatial position of the puncture assembly based on the position information of the electromagnetic positioning sensor 500. The means of combining optical navigation technology and electromagnetic navigation technology have also been disclosed in the applicant's prior applications and existing technologies.

[0036] The puncture assembly with navigation function in this embodiment can be positioned using optical navigation components and / or electromagnetic navigation components. This overcomes the problem of optical navigation components being easily blocked by non-transparent objects, and also solves the problem of positioning drift caused by interference with electromagnetic navigation components, thus ensuring the accuracy of puncture assembly positioning. The reference frame 600 and optical marker 620 of the optical navigation component are connected to the outer sheath 100, so that after the needle body 300 is removed from the outer sheath 100, the optical navigation component can continuously position the puncture assembly, especially continuously monitoring the spatial position of the distal end of the outer sheath 100, ensuring the accuracy and safety of the operation.

[0037] See details Figure 1 The reference frame 600 in this embodiment includes a support body 601 and multiple branches 602. The support body 601 is fixedly connected to the handle 200. One end of each branch 602 is a fixed end, which is fixedly connected to the support body 601. The other end of each branch 602 is a free end, which extends around the support body 601. The top of the free ends of each branch 602 is used to connect to optical marks 620. In this embodiment, the handle 200, the support body 601, and the multiple branches 602 are preferably integrally formed for ease of manufacturing. It should be noted that the number of branches 602 corresponds one-to-one with the number of optical marks 620, and the number of branches 602 and optical marks 620 is at least three. Since the arrangement and working principle of the reference frame 600 and the optical marks 620 are existing technologies, they will not be described in detail in this embodiment.

[0038] In this embodiment, the optical marker 620 preferably uses a light-emitting LED bead, which can actively emit light to ensure the brightness and uniformity of the light, making the image acquired by the optical camera clear, and further ensuring the accuracy of the optical navigation component in positioning the puncture component.

[0039] In this embodiment, a groove 603 is provided at the top of the free end of the branch 602 on the reference frame 600 to install the optical mark 620. The top of the optical mark 620 is lower than the opening of the groove 603, so that the entire optical mark 620 is located inside the corresponding groove 603. The groove 603 can not only position the optical mark 620, but also protect the optical mark 620, effectively improving the situation where the optical mark 620 is damaged by collision.

[0040] In this embodiment, the surface of the optical marker 620 is further provided with a hard and transparent covering layer, which makes the surface of the covering layer smooth, not easy to trap dirt, and has light transmittance and wear resistance, thereby further enhancing the protection of the optical marker 620 and extending its service life. The material of the covering layer in this embodiment is preferably existing hard transparent silicone, which is harmless to the human body, has good chemical stability, and is easy to process and mold.

[0041] See details Figure 3 In this embodiment, the electromagnetic positioning sensor 500 in the electromagnetic navigation component can be selectively mounted on the reference frame 600 as needed, allowing the electromagnetic positioning sensor 500 to connect to the outer sheath 100. Even after the needle body 300 is removed from the outer sheath 100, the electromagnetic navigation component can still locate the puncture assembly. Furthermore, the needle body 300 has low cost and can be discarded after single use, ensuring the cleanliness of the instrument. Alternatively, the electromagnetic positioning sensor 500 can be selectively embedded inside the needle body 300 near its distal end, bringing the distance between the electromagnetic positioning sensor 500 and the distal end of the needle body 300 closer, ensuring detection accuracy. The electromagnetic navigation component also includes an electromagnetic positioning battery and a circuit board. The electromagnetic positioning battery provides power to the electromagnetic positioning sensor 500 and the circuit board, while the circuit board processes electromagnetic signals.

[0042] See details Figures 3-6 In this embodiment, the needle handle 400 is preferably strip-shaped, with both ends of the needle handle 400 having a rotationally symmetrical arc-shaped profile, and a locking block 410 is provided on the arc-shaped profile. A receiving groove 210 for accommodating the needle handle 400 is provided on the handle 200, and a locking groove 220 adapted to the locking block 410 is provided on the groove wall of the receiving groove 210. The needle handle 400 is rotatably disposed in the receiving groove 210, so that the locking block 410 can move into or out of the locking groove 220. When the needle body 300 is just inserted into the outer sheath tube 100, the needle handle 400 is located in the groove 603 of the handle 200. At this time, the locking block 410 is located outside the slot 220. By rotating the needle handle 400, the locking block 410 is moved into the slot 220, which can lock the needle body 300 and the outer sheath tube 100. Before the needle body 300 is removed from the outer sheath tube 100, the locking block 410 is moved out of the slot 220 by rotating the needle handle 400, which can unlock the needle body 300 and the outer sheath tube 100.

[0043] See details Figure 7 In this embodiment, a first limiting protrusion 240 is provided in the slot 220, and a second limiting protrusion 420 is provided on the block 410. The first limiting protrusion 240 and the second limiting protrusion 420 cooperate to restrict the block 410 from moving out of the slot 220, so as to ensure the stability of the locked state between the needle body 300 and the outer sheath tube 100.

[0044] See details Figure 2 and Figure 5In this embodiment, the slot 220 is further provided with an annular protrusion 230, which is hollow. The annular protrusion 230 is coaxially arranged and communicates with the outer sheath tube 100, allowing the needle body 300 to pass through the annular protrusion 230 into the outer sheath tube 100. The needle handle 400 is provided with a slot 430 that matches the annular protrusion 230, allowing the slot 430 to be rotatably fitted around the outer periphery of the annular protrusion 230. The engagement of the annular protrusion 230 and the slot 430 allows the needle handle 400 to rotate within the receiving groove 210 about the central axis of the annular protrusion 230, ensuring that the locking block 410 on the needle handle 400 can smoothly and stably move into and out of the slot 220.

[0045] See details Figure 2 and 3 In this embodiment, the outer diameter of the annular protrusion 230 is adapted to the size of the external conduit, and an external thread is provided on the outer peripheral wall of the annular protrusion 230 to facilitate connection to the external conduit. That is, the annular protrusion 230 not only engages with the slot 430 on the needle handle 400 to restrict the rotation of the needle handle 400, but also facilitates the connection to the external conduit. It should be noted that the external conduit can be an injection conduit or a bone graft conduit, etc., configured according to surgical requirements.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A puncture assembly with navigation function, characterized in that, include: The outer sheath (100) is a hollow tube with a handle (200) on its proximal outer peripheral wall; The needle body (300) is movably inserted into the outer sheath (100), and the proximal end of the needle body (300) is provided with a needle handle (400) to be detachably connected to the handle (200); An electromagnetic navigation component, comprising an electromagnetic positioning sensor (500) selectively connected to the needle body (300) or the outer sheath (100); An optical navigation component includes a reference frame (600) and an optical marker (620) connected to the reference frame (600), the reference frame (600) being fixedly connected to the handle (200).

2. The puncture assembly with navigation function according to claim 1, characterized in that: The optical marker (620) is a light-emitting lamp bead.

3. The puncture assembly with navigation function according to claim 2, characterized in that: The reference frame (600) includes a support body (601) and multiple branches (602). The support body (601) is fixedly connected to the handle (200). The fixed ends of the multiple branches (602) are connected to the support body (601). The top of the free ends of the multiple branches (602) are provided with grooves (603) for mounting the optical mark (620). The top of the optical mark (620) is lower than the opening of the groove (603).

4. The puncture assembly with navigation function according to claim 3, characterized in that: The optical marker (620) has a hard and transparent cover layer on its surface, the cover layer being a hard transparent silicone.

5. The puncture assembly with navigation function according to claim 1, characterized in that: When the electromagnetic positioning sensor (500) is connected to the outer sheath (100), the electromagnetic positioning sensor (500) is mounted on the reference frame (600).

6. The puncture assembly with navigation function according to claim 1, characterized in that: When the electromagnetic positioning sensor (500) is connected to the needle body (300), the electromagnetic positioning sensor (500) is embedded in the interior of the needle body (300) near the distal end.

7. The puncture assembly with navigation function according to any one of claims 1-6, characterized in that: The two ends of the needle handle (400) are rotationally symmetrical arc-shaped contours, and the arc-shaped contours are provided with locking blocks (410); the handle (200) is provided with a receiving groove (210) for accommodating the needle handle (400), and the groove wall of the receiving groove (210) is provided with a locking slot (220) adapted to the locking block (410). The needle handle (400) is rotatably disposed in the receiving groove (210), so that the locking block (410) can move into or out of the locking slot (220).

8. The puncture assembly with navigation function according to claim 7, characterized in that: A first limiting protrusion (240) is provided in the card slot (220), and a second limiting protrusion (420) is provided on the card block (410). The first limiting protrusion (240) and the second limiting protrusion (420) cooperate to restrict the card block (410) from moving out of the card slot (220).

9. The puncture assembly with navigation function according to claim 7, characterized in that: The receiving groove (210) is also provided with an annular protrusion (230), which is coaxially arranged and connected with the outer sheath tube (100). The needle handle (400) is provided with a slot (430) that is adapted to the annular protrusion (230), so that the slot (430) can be rotatably sleeved on the outer periphery of the annular protrusion (230).

10. The puncture assembly with navigation function according to claim 9, characterized in that: The annular protrusion (230) has an external thread on its outer peripheral wall to connect to an external pipe.

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