Positioning patch and body surface visual positioning device

Abstract

The invention provides a positioning patch and a body surface visual positioning device, and relates to the technical field of medical navigation, the body surface visual positioning device comprises a carrier and a positioning patch, the positioning patch comprises: a filtering layer configured to filter visible light and allow near-infrared light to pass through; a visual layer configured to reflect near infrared light; the metal layer, the filtering layer, the visual layer and the metal layer are all of a sheet-shaped structure, and the filtering layer, the visual layer and the metal layer are sequentially arranged from top to bottom. The filtering layer can avoid interference on the visual field of a doctor; the visual layer can be identified by a visual acquisition module in the medical navigation equipment; the metal layer can be used as a mark point of medical navigation equipment and a CT image; the filtering layer, the visual layer and the metal layer are all of a sheet-shaped structure, the size is small, the size is small, the shape is regular, cost can be reduced, and disinfection and cleaning are convenient. The positioning patch is relatively fixed with the skin and the body part of the patient through the carrier, so that the fixing effect of the positioning patch is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of medical navigation, and in particular to a positioning patch and a body surface vision positioning device. Background Art

[0002] In the field of medical navigation, when using auxiliary devices such as AR glasses for vision positioning, positioning marks need to be set on the patient's body. The auxiliary devices such as AR glasses can obtain the position information of the positioning marks, match the various visual elements in the auxiliary devices with the patient's body, so as to accurately position the various visual elements on the patient's body to assist the doctor's operation.

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

[0004] The problem with using positioning balls as auxiliary positioning marks is that the positioning balls are large in size, occupy more space, and are likely to affect the doctor's observation field of view, thus affecting the doctor's operation. At the same time, due to the requirement of sterility, the positioning balls, as auxiliary devices of medical instruments, cannot be reused. The large volume of the positioning balls also results in a high material cost and a high use cost of the positioning balls. Moreover, the spherical shape design of the positioning balls also makes it difficult to disinfect and clean the positioning balls. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a positioning patch to solve the technical problems of large size, high cost, and difficult disinfection of the auxiliary positioning marks in the prior art.

[0006] In a first aspect, the present invention provides a positioning patch, including:

[0007] A filtering layer configured to filter visible light and allow near-infrared light to pass through;

[0008] A vision layer configured to reflect near-infrared light;

[0009] A metal layer. The filtering layer, the vision layer, and the metal layer are all sheet-like structures, and the filtering layer, the vision layer, and the metal layer are arranged in sequence from top to bottom.

[0010] In an optional embodiment, the outer diameter of the vision layer is smaller than the outer diameters of the filtering layer and the metal layer, and the filtering layer and the metal layer are fixedly connected.

[0011] In an optional embodiment, the vision layer and the metal layer are adhesively connected; or, the vision layer is adhesively connected to the filtering layer and the metal layer respectively.

[0012] In an alternative embodiment, the transmittance of the filtering layer is less than 1% in the wavelength range of 400 - 700 nm and greater than 85% in the wavelength range of 850 - 1100 nm.

[0013] The second object of the present invention is to provide a body surface visual positioning device to solve the technical problem of inconvenient use of auxiliary positioning marks in the prior art.

[0014] In a second aspect, the present invention provides a body surface visual positioning device, which includes a positioning patch according to any one of the foregoing embodiments, and further includes a carrier. The positioning patch is fixedly provided on the top surface of the carrier, and an adhesive layer is provided on the bottom surface of the carrier.

[0015] In an alternative embodiment, it further includes an upper protective layer and a lower protective layer. The lower protective layer is connected to the bottom surface of the adhesive layer, and the upper protective layer is connected to the top surface of the carrier and covers the positioning patch.

[0016] In an alternative embodiment, the carrier is made of a fabric material, and the positioning patch is adhered to the carrier.

[0017] In an alternative embodiment, the carrier is made of a silicone material, and a hollow operation area is formed in the middle of the carrier.

[0018] In an alternative embodiment, the carrier is provided with a mounting hole, and the positioning patch is disposed in the mounting hole; or, the positioning patch is adhered to the surface of the carrier.

[0019] In an alternative embodiment, there are at least three positioning patches, and the positioning patches are spaced apart along the outer peripheral area of the top surface of the carrier.

[0020] The positioning patch provided by the present invention has the following beneficial effects: It adopts a three-layer structure of a filtering layer, a visual layer, and a metal layer. The filtering layer can filter visible light and allow near-infrared light to pass through, which can avoid the reflection of visible light in the surgical environment and avoid interfering with the doctor's vision; the visual layer reflects near-infrared light and can be recognized by the visual acquisition module in the medical navigation device; the metal layer can be recognized by CT scanning and can be used as a marking point for the medical navigation device and the CT image; 2. The filtering layer, the visual layer, and the metal layer are all in a sheet structure, with small size, small volume, and regular shape, which can reduce costs and is convenient for disinfection and cleaning.

[0021] The body surface visual positioning device provided by the present invention has the following beneficial effects: The adhesive layer on the bottom surface of the carrier is used to adhere to the patient's skin. The positioning patch is relatively fixed to the patient's skin and body part through the carrier. The positioning patch can maintain a small volume, while the carrier can adopt a larger contact area to increase the area of the adhesive layer, thereby increasing the adhesive effect and ensuring the fixing effect of the positioning patch. The carrier can also connect multiple positioning patches at the same time, ensuring the accuracy of the relative positions of the multiple positioning patches and increasing the efficiency of fixing the multiple positioning patches to the patient's skin. Brief Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic side structure diagram of the positioning patch provided by the embodiment of the present invention;

[0024] Figure 2 It is one of the schematic structure diagrams of the body surface visual positioning device provided by the embodiment of the present invention;

[0025] Figure 3 It is another schematic structure diagram of the body surface visual positioning device provided by the embodiment of the present invention;

[0026] Figure 4 It is the third schematic structure diagram of the body surface visual positioning device provided by the embodiment of the present invention.

[0027] Reference numerals: 100 - positioning patch; 110 - filtering layer; 120 - visual layer; 130 - metal layer; 200 - carrier; 210 - hollow operation area; 300 - upper protective layer; 400 - lower protective layer. Detailed Description of the Specific Embodiments

[0028] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention claimed, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0030] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0032] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only 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 inclined.

[0033] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0035] Positioning patch 100

[0036] An embodiment of the present invention provides a positioning patch 100, as Figure 1 shown, including:

[0037] A filtering layer 110, which is configured to filter visible light and allow near-infrared light to pass through;

[0038] A visual layer 120, which is configured to reflect near-infrared light;

[0039] A metal layer 130. The filtering layer 110, the visual layer 120, and the metal layer 130 are all sheet-like structures, and the filtering layer 110, the visual layer 120, and the metal layer 130 are arranged in sequence from top to bottom.

[0040] The positioning patch 100 provided by the present invention has the following beneficial effects: It adopts a three-layer structure of a filtering layer 110, a vision layer 120, and a metal layer 130. Among them, the filtering layer 110 can filter visible light and allow near-infrared light to pass through, which can avoid reflecting visible light in the surgical environment and avoid interfering with the doctor's vision; the vision layer 120 reflects near-infrared light and can be recognized by the vision acquisition module in the medical navigation device; the metal layer 130 can be recognized by CT scanning and can be used as a marking point for the medical navigation device and the CT image; 2. The filtering layer 110, the vision layer 120, and the metal layer 130 are all sheet-like structures, which are small in size, small in volume, and regular in shape, can reduce costs, and are convenient for disinfection and cleaning.

[0041] During use, first fix the positioning patch 100 to the human body surface, and then perform a CT scan. The obtained CT scan image includes the metal layer 130 of the positioning patch 100, and the positioning patch 100 can form a coordinate reference point for the CT scan image. Subsequently, during the surgical planning process before the operation, the medical navigation system can plan the surgical path according to the position of the positioning patch 100 and the CT scan image information, such as the puncture position, angle, depth, etc., and form visual elements. During the operation, the medical navigation system can recognize the vision layer 120 of the positioning patch 100 through the vision acquisition module, so as to perform coordinate matching between the visual elements formed during the surgical planning process and the positioning patch 100, and thus accurately match the visual elements with the patient.

[0042] Figure 1 It is a schematic side structure diagram of the positioning patch 100. In the figure, the size and proportional relationship are adjusted for the sake of clearly showing the structural relationship, which does not represent the real size and proportional relationship and does not constitute a limitation on the size and proportional relationship.

[0043] Figure 2 Shows the three-dimensional structure of the positioning patch 100. As Figure 2 shown, the positioning patch 100 as a whole presents a sheet-like structure. Specifically, the filtering layer 110, the vision layer 120, and the metal layer 130 are all sheet-like structures. The filtering layer 110, the vision layer 120, and the metal layer 130 can all adopt a circular structure.

[0044] Specifically, the filtering layer 110 can adopt glass coating, such as black wave glass and coating, and the coating can adopt a double-sided antireflection film.

[0045] Specifically, the metal layer 130 can adopt stainless steel material, or can also adopt platinum (Pt), gold (Au), tantalum (Ta), tungsten (W), titanium and its alloys (such as Ti-6Al-4V), as well as degradable metals (such as magnesium alloys, iron-based alloys) and high-entropy alloys, etc.

[0046] Specifically, the vision layer 120 can adopt a reflective film structure.

[0047] In some embodiments, the transmittance of the filtering layer 110 in the wavelength range of 400 - 700 nm is less than 1%, and the transmittance in the wavelength range of 850 - 1100 nm is greater than 85%.

[0048] The wavelength range of 400 - 700 nm covers the visible light band. In the surgical environment, visible light is absorbed by the filtering layer 110 and attenuated by more than 99%, which can effectively avoid reflection interference with the surgical field, prevent the positioning patch 100 from affecting the doctor's operation, and also prevent the positioning patch 100 from affecting the visual acquisition module of the medical navigation device. Especially in surgeries such as laparoscopy, the light of the shadowless lamp is relatively strong. By using the filtering layer 110 with a visible light band transmittance less than 1%, the reflection interference can be effectively avoided.

[0049] In some embodiments, as Figure 1 shown, the outer diameter of the visual layer 120 is smaller than the outer diameters of the filtering layer 110 and the metal layer 130, and the filtering layer 110 and the metal layer 130 are fixedly connected. In this structure, the filtering layer 110 and the metal layer 130 are directly fixedly connected. Since the filtering layer 110 can be made of glass material which has relatively high structural strength, and the metal layer 130 generally also has high strength, while the visual layer 120 can be made of a thin film structure such as a reflective film. Therefore, directly fixedly connecting the filtering layer 110 and the metal layer 130 can ensure the connection structural strength of the entire positioning patch 100, and the visual layer 120 can also use thin film materials to reduce the overall thickness and the size of the positioning patch 100.

[0050] Meanwhile, since the outer diameter of the visual layer 120 is smaller than the outer diameters of the filtering layer 110 and the metal layer 130, when connecting the filtering layer 110 and the metal layer 130, the connecting medium is not likely to affect the visual layer 120, avoiding affecting the reflection effect of the visual layer 120 and ensuring that the visual layer 120 can be recognized by the visual acquisition module of the medical navigation device. For example, when the filtering layer 110 and the metal layer 130 are bonded with UV glue, the UV glue can be coated only on the relative surfaces of the filtering layer 110 and the metal layer 130 outside the visual layer 120, and the UV glue is not likely to overflow onto the visual layer 120.

[0051] In some embodiments, the visual layer 120 and the metal layer 130 of the positioning patch 100 are adhesively connected to position and preliminarily fix the visual layer 120 and the metal layer 130. The visual layer 120 and the metal layer 130 can be fixed with glue such as UV glue, or can be fixed with the self-adhesive of the visual layer 120.

[0052] In some embodiments, the visual layer 120 of the positioning patch 100 is adhesively connected to the filtering layer 110 and the metal layer 130 respectively. That is, the upper and lower surfaces of the visual layer 120 are adhesively connected to the filtering layer 110 and the metal layer 130 respectively. At this time, at least on the top surface of the visual layer 120, that is, the surface where the visual layer 120 is connected to the filtering layer 110, a glue that does not affect the reflection performance of the visual layer 120 is used, such as fluorinated polymer glue, low refractive index silicone glue, ultraviolet curable optical glue, and polyimide-based adhesive.

[0053] Body surface visual positioning device

[0054] An embodiment of the present invention provides a body surface visual positioning device, such as Figures 2 to 4 shown, which includes the positioning patch 100 in any of the above embodiments, and further includes a carrier 200. The positioning patch 100 is fixedly arranged on the top surface of the carrier 200, and an adhesive layer is provided on the bottom surface of the carrier 200.

[0055] The adhesive layer on the bottom surface of the carrier 200 is used to adhere to the patient's skin. The positioning patch 100 is relatively fixed to the patient's skin and body part through the carrier 200. The positioning patch 100 can maintain a small volume, while the carrier 200 can adopt a larger contact area to increase the area of the adhesive layer, thereby increasing the adhesive effect and ensuring the fixing effect of the positioning patch 100. The carrier 200 can also connect multiple positioning patches 100 at the same time, ensuring the accuracy of the relative positions of the multiple positioning patches 100 and increasing the efficiency of fixing the multiple positioning patches 100 to the patient's skin. Connecting multiple positioning patches 100 by the carrier 200 can further improve the efficiency of various links such as the production, storage, use, and transportation of the body surface visual positioning device.

[0056] The carrier 200 can be made of a flexible material to increase the fitting effect with the patient's body surface; the carrier 200 can also adopt a shape customized according to the patient's body surface, such as obtaining the patient's body surface shape through 3D scanning, and then using 3D printing technology to make the shape of the carrier 200 that can completely fit the patient's body surface.

[0057] The adhesive layer can be a medical-grade adhesive tape or a medical glue, such as cyanoacrylate, fibrin glue, polyethylene glycol-based hydrogel, silicone-based medical pressure-sensitive adhesive, etc.

[0058] In some embodiments, such as Figure 4As shown, the body surface visual positioning device further includes an upper protective layer 300 and a lower protective layer 400. The lower protective layer 400 is connected to the bottom surface of the adhesive layer, and the upper protective layer 300 is connected to the top surface of the carrier 200 and covers the positioning patch 100. The upper protective layer 300 and the lower protective layer 400 can protect the entire body surface visual positioning device before use, avoiding wear, bumps, etc. during storage and transportation. In particular, it can protect the adhesive performance of the adhesive layer on the bottom surface of the carrier 200 and ensure that the position of the positioning patch 100 on the top surface of the carrier 200 remains unchanged.

[0059] Specifically, both the upper protective layer 300 and the lower protective layer 400 can be made of release films that are easy to tear. Before attaching the body surface visual positioning device to the patient's body, the upper protective layer 300 and the lower protective layer 400 can be torn off.

[0060] In some embodiments, as Figure 3 shown, the carrier 200 is made of a fabric material, such as non-woven fabric, and the positioning patch 100 is adhered to the carrier 200.

[0061] Using a fabric material as the carrier 200 allows for direct operation through the carrier 200 during the surgical process. For example, during a puncture operation, the puncture needle can directly penetrate the fabric material without the need to open holes. Moreover, the fabric material has a good fit with the patient, providing greater comfort. The fabric material is also more convenient for bonding, such as being more easily combined with glue or medical-grade adhesive tape, resulting in a good bonding effect of the carrier 200 and enhancing the fixation effect of the body surface visual positioning device on the patient's body surface.

[0062] Especially when there is a deviation between the preoperative plan and the intraoperative situation and the puncture position needs to be adjusted, the puncture needle can penetrate through any part of the fabric material, providing high surgical flexibility and facilitating adjustment by the doctor according to the actual situation.

[0063] In some embodiments, as Figure 2 and 4 shown, the carrier 200 is made of a silicone material, and a hollow operation area 210 is formed in the middle of the carrier 200.

[0064] During use, first pre-plan the general area for the planned surgery. When connecting the body surface visual positioning device to the patient's body surface, align the hollow operation area 210 with the pre-planned surgical area, and perform manual operations within the hollow operation area 210 during the surgery.

[0065] At the same time, since the silicone material has a certain flexibility, during the surgical process, when there is a deviation between the preoperative plan and the intraoperative situation and the puncture position needs to be adjusted, the silicone material carrier 200 can be pulled without hindering the progress of the surgery.

[0066] The silicone material is also flexible and can conform to the patient's body surface. Moreover, the silicone material has a certain thickness and high structural strength, which has a good fixing effect on the positioning patch 100.

[0067] The carrier 200 made of silicone material can be provided with mounting holes, and the positioning patch 100 is arranged in the mounting holes, so that the upper surface of the positioning patch 100 is flush with the upper surface of the carrier 200, thereby avoiding the displacement of the positioning patch 100 caused by external forces and ensuring the position of the positioning patch 100 on the carrier 200.

[0068] Similarly, the carrier 200 made of silicone material can also fix the positioning patch 100 by bonding. The bonding structure is simpler and no additional processing or customization of the silicone material is required.

[0069] In some embodiments, such as Figure 2 and 4 shown, at least three positioning patches 100 are provided. The positioning patches 100 are spaced along the outer peripheral region of the top surface of the carrier 200. The positioning patches 100 can form multi-point positioning, which is more convenient for the medical navigation system to perform three-dimensional modeling according to the CT scan image before surgery, and is also more convenient to match the visual elements planned before surgery with the positioning patches 100 during surgery.

[0070] Three positioning patches 100 can already form a three-dimensional information-based three-dimensional coordinate. More positioning patches 100 can also be set as needed, such as Figures 2 to 4 the five in

[0071] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning patch, characterized in that, Comprising: A filtering layer (110), the filtering layer (110) being configured to filter visible light and allow near-infrared light to pass through; A vision layer (120), the vision layer (120) being configured to reflect near-infrared light; A metal layer (130), the filtering layer (110), the vision layer (120) and the metal layer (130) are all in sheet-like structures, and the filtering layer (110), the vision layer (120) and the metal layer (130) are arranged in sequence from top to bottom.

2. The positioning patch according to claim 1, wherein The outer diameter of the vision layer (120) is smaller than the outer diameters of the filtering layer (110) and the metal layer (130), and the filtering layer (110) and the metal layer (130) are fixedly connected.

3. The positioning patch according to claim 2, wherein, The vision layer (120) and the metal layer (130) are adhesively connected; or, the vision layer (120) is adhesively connected to the filtering layer (110) and the metal layer (130) respectively.

4. The positioning patch according to claim 1, characterized in that, The transmittance of the filtering layer (110) in the wavelength range of 400 - 700 nm is less than 1% and the transmittance in the wavelength range of 850 - 1100 nm is greater than 85%.

5. A body surface visual positioning device, characterized in that, Comprising the positioning patch (100) according to any one of claims 1 to 4, further comprising a carrier (200), the positioning patch (100) being fixedly provided on the top surface of the carrier (200), and an adhesive layer being provided on the bottom surface of the carrier (200).

6. The body surface vision positioning device according to claim 5, characterized in that, Further comprising an upper protective layer (300) and a lower protective layer (400), the lower protective layer (400) being connected to the bottom surface of the adhesive layer, and the upper protective layer (300) being connected to the top surface of the carrier (200) and covering the positioning patch (100).

7. The body surface visual positioning device according to claim 5, characterized in that, The carrier (200) is made of fabric material, and the positioning patch (100) is adhesively bonded to the carrier (200).

8. The body surface visual positioning device according to claim 5, characterized in that, The carrier (200) is made of silica gel material, and a hollow operation area (210) is formed in the middle of the carrier (200).

9. The body surface visual positioning device according to claim 8, wherein, The carrier (200) is provided with mounting holes, and the positioning patch (100) is arranged in the mounting holes; or, the positioning patch (100) is adhesively bonded to the surface of the carrier (200).

10. The body surface visual positioning device according to claim 5, characterized in that There are at least three positioning patches (100), and the positioning patches (100) are spaced apart and distributed along the outer peripheral area of the top surface of the carrier (200).

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