Optical navigation auxiliary puncture device capable of being freely held

Abstract

The utility model belongs to the technical field of medical instruments, and discloses an optical navigation auxiliary puncture device capable of being freely held, which comprises a base, a spacer ring, a lantern ring and reflective stickers, a plurality of circular grooves distributed annularly are arranged on the outer circle of the base and the outer circle of the lantern ring, the reflective stickers are pasted in the circular grooves to form a polyhedral reflective marking structure, and the reflective stickers are arranged on the base and the outer circle of the lantern ring. A distance ring is connected between the base and the lantern ring, and different lengths of the distance ring are set according to different types of puncture needles so as to control the distance between the lantern ring and the base. The device is provided with an annular polyhedral reflective mark structure, the camera at each angle can shoot a mark point and track the position and posture of a needle point in real time, meanwhile, the distance ring is arranged between the base and the lantern ring, different puncture needle models are matched through the length of the distance ring, the position of the needle point is automatically calculated, a doctor does not need to input, input errors are avoided, and the accuracy of the device is improved. And the calibration accuracy is improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to an optical navigation-assisted puncture device that can be freely held. Background Technology

[0002] Surgical navigation systems are becoming increasingly widely used in clinical practice. Based on their operating principles, surgical navigation systems can be categorized into electromagnetic navigation and optical navigation. Currently, optical navigation systems are more widely used and offer greater accuracy.

[0003] In optically guided puncture surgery, the position of the puncture device needs to be captured in order to plan the puncture path. A common method of capture is to set a device with reflective markings on the puncture device or puncture clamping device (such as patents CN114668460A, CN108095810A).

[0004] However, reflective marking devices are generally large in size and are usually set on the same side. When doctors operate them, they need to intentionally align the side with the reflective marking with the optical camera. There may also be situations where the reflective ball is blocked when holding the device, which makes operation inconvenient. Utility Model Content

[0005] The purpose of this invention is to provide a freely gripable optical navigation-assisted puncture device to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the specific technical solution of this utility model for a freely gripable optical navigation-assisted puncture device is as follows:

[0007] A freely grippable optical navigation-assisted puncture device includes a base, a spacer ring, a collar, and reflective stickers. The base and the outer ring of the collar have multiple circular grooves with a ring of fabric. Reflective stickers are pasted in the circular grooves to form a polyhedral reflective marking structure. A spacer ring connects the base and the collar. The spacer ring has different lengths depending on the type of puncture needle, controlling the distance between the collar and the base. This controls the distance between the reflective stickers on the collar and the base, allowing the navigation system to automatically calculate the needle tip position based on the different distances.

[0008] Furthermore, the length of the collar is available in models ranging from 10 to 50 mm.

[0009] Furthermore, the circular groove has an angle α with the axis of the base or collar.

[0010] Furthermore, the base has a guide shaft at its center, and the spacer and collar have shaft holes at their centers. The spacer and collar are fitted onto the guide shaft, with one end face of the spacer connected to the base and the other end face connected to the collar.

[0011] Furthermore, the guide shaft has a guide strip, and the shaft holes of the spacer and the collar have grooves that match the guide strip. After the spacer and the collar are fitted onto the guide shaft, they cannot rotate, ensuring that the plane normal direction of the collar and the reflective sticker on each side of the base is consistent.

[0012] Furthermore, the base and the outer ring of the collar have six circular grooves.

[0013] Furthermore, the base, spacer ring, and collar ring are an integral structure.

[0014] Furthermore, it includes two optical marker balls with a fixed spacing and a through hole in the middle for fitting onto the outer tube of the puncture needle.

[0015] Furthermore, the spacing between the optical marker spheres is 10-50 mm.

[0016] This invention provides a freely grippable optical navigation-assisted puncture device with the following advantages: The device features a ring-shaped, multi-faceted reflective marking structure. Doctors do not need to manually rotate the puncture needle to align the reflective marking with the camera during navigation; the camera can capture the marking point from every angle, tracking the needle tip position in real time and avoiding damage to human tissue caused by needle rotation. Furthermore, the device incorporates a spacer ring between the base and the collar. Different puncture needle models are matched to the length of the spacer ring, automatically calculating the needle tip position without requiring doctor input, thus avoiding input errors and improving calibration accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the optical navigation-assisted puncture device of this utility model;

[0018] Figure 2 This is an exploded structural diagram of the optical navigation-assisted puncture device of this utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the optical navigation-assisted puncture device of this utility model;

[0020] Figure 4 This is a schematic diagram of another embodiment of the optical navigation-assisted puncture device of this utility model;

[0021] Figure 5 This is a schematic diagram of the optical marker sphere structure of this utility model;

[0022] The markings in the diagram are as follows: 1. Base; 11. Guide shaft; 111. Guide strip; 2. Spacer ring; 3. Collar ring; 4. Reflective sticker; 5. Circular groove; 6. Optical marker ball. Detailed Implementation

[0023] To better understand the purpose, structure, and function of this utility model, the following detailed description of a freely gripable optical navigation-assisted puncture device is provided in conjunction with the accompanying drawings.

[0024] like Figure 1 Figure 2 As shown, this utility model discloses a freely grippable optical navigation-assisted puncture device, comprising a base 1, a spacer ring 2, a collar ring 3, and reflective stickers 4. The base 1 and collar ring 3 have multiple circular grooves 5 formed by a ring of cloth on their outer rings. Reflective stickers 4 are affixed to the circular grooves 5, forming a polyhedral reflective marking structure. The spacer ring 2 connects the base 1 and collar ring 3. The spacer ring 2 has different lengths depending on the puncture needle model, controlling the distance between the collar ring 3 and the base 1, thereby controlling the distance between the reflective stickers 4 on the collar ring 3 and the reflective stickers 4 on the base 1. The navigation system captures images of the reflective stickers 4, identifies the positions of the base 1 and collar ring 3, determines the currently used puncture needle model based on the distance between the base 1 and collar ring 3, and automatically calculates the needle tip position.

[0025] The length of collar 3 is 10-50mm, such as 15mm, 20mm, 25mm.

[0026] Since the recognition camera is generally positioned slightly above, the circular groove 5 has an angle α with the axis of the base 1 or collar 3, where α is 0-10 degrees, preferably 5-8 degrees, so that the camera of the navigation system can better recognize the target.

[0027] The base 1 has a guide shaft 11 at its center, and the spacer ring 2 and collar ring 3 have shaft holes at their centers. The spacer ring 2 and collar ring 3 are fitted onto the guide shaft 11, with one end face of the spacer ring 2 connected to the base 1 and the other end face connected to the collar ring 3. The guide shaft 11 has a guide strip 111, and the shaft holes of the spacer ring 2 and collar ring 3 have grooves that match the guide strip 111. After the spacer ring 2 and collar ring 3 are fitted onto the guide shaft 11, they cannot rotate, thus ensuring that the plane normal direction of the collar ring 3 and the reflective sticker 4 on each side of the base 1 is consistent.

[0028] Preferably, the base 1 and the outer ring 3 have six circular grooves 5.

[0029] Generally, the base 1, spacer ring 2, and collar ring 3 are separate components, facilitating the replacement of different models of spacer ring 2. This is especially important when the equipment has a high production capacity. Figure 3 As shown, the base 1, spacer ring 2, and collar ring 3 can also be designed as an integrated structure to reduce assembly costs.

[0030] like Figure 4 As shown, the device is through the middle. When in use, the optical navigation-assisted puncture device is fixed on the outer tube of the puncture needle, near the tail end of the outer tube. Under optical navigation, the position information on the optical marker component is collected by the navigation camera, and the position of the needle tip is obtained by the algorithm.

[0031] like Figure 5 As shown, in one embodiment, a freely grippable optical navigation-assisted puncture device includes two optical marker balls 6 with a fixed spacing of 10-50 mm, such as 15 mm, 20 mm, or 25 mm. The position of the puncture needle tip relative to the optical markers can be determined through factory calibration. The diameter of the optical marker balls 6 is generally 11.5 mm. A through hole is provided between the two optical marker balls 6 for fitting onto the outer tube of the puncture needle.

[0032] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A free-holdable optical navigation auxiliary puncture device, comprising a base (1), a spacer ring (2), a sleeve ring (3), a reflective sticker (4), characterized in that, The base (1) and the collar (3) have multiple circular grooves (5) with rings of cloth on the outer ring. Reflective stickers (4) are attached to the circular grooves (5) to form a polyhedral reflective marking structure. A spacer (2) is connected between the base (1) and the collar (3). The spacer (2) is set with different lengths according to different puncture needle models to control the distance between the collar (3) and the base (1), thereby controlling the distance between the reflective stickers (4) on the collar (3) and the reflective stickers (4) on the base (1). This is used by the navigation system to automatically calculate the needle tip position of the puncture needle according to different distances.

2. The free-hand grippable optical navigation assisted puncture device of claim 1, wherein, The length of the collar (3) is 10-50mm.

3. The free-holdable optical navigation assisted puncture device according to claim 1, wherein, The circular groove (5) has an angle α with the axis of the base (1) or the collar (3).

4. The free-holdable optical navigation assisted puncture device of claim 1, wherein, The base (1) has a guide shaft (11) at its center, and the spacer (2) and the collar (3) have shaft holes at their centers. The spacer (2) and the collar (3) are fitted on the guide shaft (11). One end face of the spacer (2) is connected to the base (1), and the other end face is connected to the collar (3).

5. The free-hand grippable optical navigation assisted puncture device of claim 4, wherein, The guide shaft (11) has a guide strip (111), and the shaft holes of the spacer (2) and the collar (3) have grooves that match the guide strip (111). After the spacer (2) and the collar (3) are fitted onto the guide shaft (11), they cannot rotate, ensuring that the plane normal direction of the collar (3) and the reflective sticker (4) on each side of the base (1) is consistent.

6. The free-holdable optically navigated auxiliary puncture device according to claim 1, characterized in that, The base (1) and the outer ring (3) have six circular grooves (5) around the outer ring.

7. The free-holdable optical navigation assisted puncture device of claim 1, wherein, The base (1), spacer (2), and collar (3) are an integral structure.

8. The free-holdable optical navigation assisted puncture device of claim 1, wherein, It includes two optical marker balls (6) with a fixed spacing and a through hole in the middle of the two optical marker balls (6) for fitting onto the outer tube of the puncture needle.

9. The free-holdable optically navigated auxiliary puncture device according to claim 8, characterized in that, The optical marker spheres (6) are spaced 10-50 mm apart.

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