Needle scale structure and ablation needle
By using a combination of opaque and transparent coatings on the ablation needle, clear graduations are formed by utilizing color differences, solving the problems of graduation detachment and unevenness in existing technologies, and achieving a smooth needle surface and accurate puncture results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-03-27
AI Technical Summary
The existing scale structure of ablation needles results in an uneven feel on the needle surface, which affects the puncture process, and the scale is prone to falling off.
A combination of an opaque first coating and a transparent second coating is used. The first coating is partially removed to form the scale area, while the second coating covers the entire area. The color difference is used to form clear scale markings, and the scale is protected by the transparent coating to eliminate the feeling of unevenness.
This results in clearer scale boundaries, prevents scale from falling off, ensures a smooth needle surface without any bumps or unevenness, and improves the accuracy and safety of the puncture process.
Smart Images
Figure CN224039341U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, especially a kind of needle scale structure and ablation needle. BACKGROUND
[0002] Among current tumor treatment means, there are generally through surgical operation to completely resect, through drug to carry out targeted chemotherapy, radiotherapy etc., through microwave ablation, radiofrequency ablation, cryoablation, high-voltage pulse ablation etc. minimally invasive treatment operation. Among them, minimally invasive ablation surgery is widely used in tumor ablation surgery in recent years, which is physically ablated on lesion at specified position of operating knife through percutaneous puncture, and has small trauma and good treatment effect.
[0003] Generally, the entire or part of the outside of the ablation needle body has an anti-adhesion coating and a scale mark. The coating can prevent the needle body from adhering to the tissue under the influence of high temperature or low temperature after the operation is completed, or it can play an insulating role. The scale can provide a position reference for the doctor during the operation.
[0004] The existing ablation needle scale is prepared by first spraying a layer or more of coating on the surface of the needle body, and then spraying a coating of different color as a scale mark on the original coating. However, the scale prepared in this way has an outer diameter larger than that of the region without scale, and the surface of the needle body has a concave-convex feeling, which affects the puncture process, and the scale boundary is blurred and there is a risk of scale coating falling off. SUMMARY
[0005] To solve the problem that the scale structure of the existing needle causes the surface of the needle body to have a concave-convex feeling, affects the puncture and is easy to fall off, the utility model provides a needle scale structure and an ablation needle.
[0006] In a first aspect, the utility model provides a needle scale structure, which includes:
[0007] a needle body;
[0008] an opaque first coating covering the surface of the needle body and having a color different from that of the needle body, the first coating including a coated area and a plurality of scale areas with locally removed coating, the scale areas exposing the needle body as scales; and
[0009] a transparent second coating covering the coated area and the scale areas of the first coating.
[0010] In one embodiment, the second coating fills the scale areas, and the part of the second coating corresponding to the coated area and the part corresponding to the scale areas are flush.
[0011] In one embodiment, the first coating and the second coating each comprise an insulating coating portion and a conductive coating portion, and the conductive coating portions of the first coating and the second coating correspond to each other.
[0012] In one embodiment, the conductive coating portion corresponds to at least an electrode portion of the needle body near a needle tip.
[0013] In one embodiment, the insulating coating portion and the conductive coating portion of the same coating seamlessly join at edges thereof.
[0014] In one embodiment, the first coating and the second coating do not cover a needle tip of the needle body.
[0015] In one embodiment, the first coating is one of red, yellow, blue, or one of colors produced by mixing the three colors together or two of the three colors together.
[0016] In one embodiment, the scale region is configured as an annular region continuously extending in a circumferential direction of the needle body.
[0017] In one embodiment, the scale regions and the coating regions are alternately arranged in an axial direction of the needle body, and a width of the scale region in the axial direction of the needle body is less than a width of the coating region adjacent to the scale region.
[0018] In a second aspect, the utility model provides a kind of ablation needle, it includes above-mentioned needle scale structure, further has its all technical effects.
[0019] The above technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of the utility model can be achieved.
[0020] Compared with the prior art, the needle scale structure and the ablation needle provided by the utility model have at least the following beneficial effects:
[0021] The needle scale structure and the ablation needle of the utility model form scale marks by utilizing the visual difference between the color of the needle body and the color of the first coating, do not need to spray scale structure separately, and the scale boundary is clearer. Meanwhile, the second coating covering the outer surface of the needle body as a whole can eliminate the concave-convex structure caused by the scale, so that the outer surface of the needle body has a complete and smooth curved surface, and the scale structure can be protected to avoid falling off. BRIEF DESCRIPTION OF DRAWINGS
[0022] The utility model will be described in more detail below based on embodiments and with reference to the drawings. Wherein:
[0023] Figure 1A cross-sectional view of the needle scale structure of the present application is shown.
[0024] Figure 2 A schematic view of the coating coverage area in the needle scale structure of the present application is shown.
[0025] Figure 3 A schematic view of the coating coverage area on a monopolar needle is shown.
[0026] Figure 4 A schematic view of the coating coverage area on a bipolar needle is shown.
[0027] In the drawings, the same components are designated by the same reference numerals. The drawings are not drawn to scale.
[0028] Reference numerals:
[0029] 11-needle body, 111-insulating medium, 112-electrode portion, 12-first coating layer, 121-coated area, 122-scale area, 13-second coating layer, 101-insulating coating portion, 102-conductive coating portion. DETAILED DESCRIPTION
[0030] The present application will be further described below with reference to the accompanying drawings.
[0031] The embodiment of the present application provides a needle scale structure, which comprises:
[0032] a needle body 11;
[0033] an opaque first coating layer 12, which covers the surface of the needle body 11 and has a color different from that of the needle body 11, the first coating layer 12 comprising a coated area 121 and a plurality of scale areas 122 from which the coating layer is partially removed, the scale areas 122 exposing the needle body 11 as scales; and
[0034] a transparent second coating layer 13, which covers the coated area 121 and the scale areas 122 of the first coating layer 12 as a whole.
[0035] Specifically, as shown in the accompanying drawings Figure 1As shown, the scale structure of the needle is composed of the needle body 11, the first coating layer 12 and the second coating layer 13. The first coating layer 12 is directly coated on the surface of the needle body 11 and is an incomplete continuous coating structure, i.e. the first coating layer 12 has a region where the coating is removed, i.e. the scale region 122, and a region where the coating is not removed, i.e. the coating region 121. In this way, the scale region 122 can expose the needle body 11 below the coating, and the color difference between the needle body 11 of the scale region 122 and the coating of the coating region 121 can visually form a scale mark. The second coating layer 13 is entirely coated on the first coating layer 12 and is made of transparent material, which does not affect the observation of the scale mark formed by the color contrast between the first coating layer 12 and the needle body 11 through the second coating layer 13. At the same time, the second coating layer 13 can protect the internal scale mark and reduce the concave-convex feeling of the surface of the needle body 11 caused by the relative concave-convex structure between the scale region 122 and the coating region 121.
[0036] In addition, the structure of the scale region 122 can be selected according to needs: (1) after the first coating layer 12 is entirely coated on the needle body 11, the coating of the region where the scale is needed is removed by machining or laser stripping to form the scale region 122; (2) before the first coating layer 12 is coated, a shield is covered on the region where the scale is needed, then the first coating layer 12 is entirely coated, and finally the shield is removed, which can also form the scale region 122.
[0037] Preferably, the second coating layer 13 fills the scale region 122, and the part of the second coating layer 13 corresponding to the coating region 121 is flush with the part of the second coating layer 13 corresponding to the scale region 122.
[0038] Specifically, as shown in the drawings Figure 1 By controlling the coating amount of the second coating layer 13, the part of the second coating layer 13 corresponding to the scale region 122 can completely fill the scale region 122, so that the outer surface of the second coating layer 13 is a continuous smooth flat surface, eliminating the concave-convex feeling of the surface of the needle body 11 caused by the relative concave-convex structure between the scale region 122 and the coating region 121, thereby ensuring the smooth consistency of the surface of the needle.
[0039] Optionally, the color of the first coating layer 12 is one of red, yellow and blue, or one of the colors produced by mixing the above three colors simultaneously or in pairs.
[0040] Specifically, the present application directly utilizes the color difference and contrast between the needle body 11 itself and the first coating layer 12 to form a visual scale mark, so the color of the needle body 11 and the color of the first coating layer 12 need to have a relatively obvious color difference. Based on the conventional material selection of the needle body 11, the color is usually silver or silver-white with metallic luster, so the color selection of the first coating layer 12 is one of the three primary colors of red, yellow and blue, which can form a relatively obvious color difference with the color of the needle body 11, or the color selection of the first coating layer 12 is one of the colors mixed by two of the three primary colors (green, orange, purple) or the color mixed by the three primary colors (black), which can also form a relatively obvious color difference with the color of the needle body 11.
[0041] In one embodiment, the first coating layer 12 and the second coating layer 13 each include an insulating coating part 101 and a conductive coating part 102, and the conductive coating parts 102 of the first coating layer 12 and the second coating layer 13 correspond to each other; the conductive coating part 102 at least corresponds to the electrode part of the needle body 11 near the needle tip.
[0042] Specifically, according to the use, conductivity and structure of the needle body 11, the structure of the coating and the drawing area can be targeted. For example, when used as an ablation needle, the needle body 11 needs to have a partial conductive function, so the first coating layer 12 and the second coating layer 13 with the insulating coating part 101 and the conductive coating part 102 can be selected accordingly. The ablation needle has an electrode part 112 near the needle tip, so the part of the first coating layer 12 and the second coating layer 13 at the corresponding position of the electrode part 112 should be configured as the conductive coating part 102 corresponding to each other. For the rest of the needle body 11 that does not need to be conductive, at least one of the corresponding parts of the first coating layer 12 and the second coating layer 13 is configured as the insulating coating part 101. For the needle tool without the need for conductive function, the first coating layer 12 and the second coating layer 13 are set as a whole without conductive function, i.e. only including the insulating coating part 101.
[0043] Preferably, when the first coating layer 12 or the second coating layer 13 includes the insulating coating part 101 and the conductive coating part 102, the edges of the adjacent insulating coating part 101 and the conductive coating part 102 are seamlessly connected.
[0044] Specifically, for the first coating layer 12, the edges of the adjacent insulating coating part 101 and the conductive coating part 102 are seamlessly connected, which means that they can be connected seamlessly in structure. If the adjacent insulating coating part 101 and the conductive coating part 102 are bounded by the scale area 122, they cannot be connected in structure at this time, so seamless connection is not required here. For the second coating layer 13, the edges of the adjacent insulating coating part 101 and the conductive coating part 102 are seamlessly connected. In the drawings, the adjacent insulating coating part 101 and the conductive coating part 102 are spaced apart, which is only for convenience of illustration.
[0045] In one embodiment, in order to avoid the coating affecting the puncture function of the needle, the covering area of the first coating 12 and the second coating 13 on the needle body 11 does not include the needle tip of the needle body 11, preventing the sharpness of the needle tip from being reduced. As shown in the drawings, the covering area of the coating generally needs to cover the insulating medium arranged near the needle tip on the needle body, but does not cover the needle tip. Figure 2
[0046] In one embodiment, in order to ensure that the scale can be observed from any position in the circumferential direction and improve the convenience of observation, the scale area 122 is configured as an annular area continuously extending in the circumferential direction of the needle body 11.
[0047] In one embodiment, the scale area 122 and the coating area 121 are alternately distributed in the axial direction of the needle body 11, and the width of the scale area 122 in the axial direction of the needle body 11 is smaller than the width of the coating area 121 adjacent thereto.
[0048] Specifically, since the scale mark on the needle body 11 relies on the visual difference between the color of the needle body 11 of the scale area 122 and the color of the coating of the coating area 121, in order to highlight the scale and ensure the accuracy of observation, the width of the scale area 122 and the coating area 121 needs to have a large difference, and the width of the scale area 122 needs to be obviously smaller than the width of the coating area 121. If the width of the scale area 122 and the coating area 121 has little visual difference, it is easy to cause personnel to mistakenly regard the coating area 121 as the scale mark, resulting in errors in observation.
[0049] The embodiment of the utility model also provides an ablation needle, which comprises the needle scale structure above, and further has the technical effects thereof.
[0050] In the description of the utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.
[0051] While the application has been described with reference to particular embodiments thereof, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present application. It will thus be appreciated that numerous modifications can be made to the illustrative embodiments and that other arrangements can be devised without departing from the spirit and scope of the present application as defined by the appended claims. It will be understood that the features described in relation to one embodiment can be used in combination with features described in relation to another embodiment.
Claims
1. A scale structure for a needle, comprising: The needle body; An opaque first coating layer covering the surface of the needle body and having a color different from the needle body, the first coating layer including a coated region and a plurality of scale regions with locally removed coating layer, the scale regions exposing the needle body as scales; And A transparent second coating layer covering the coated region and the scale regions of the first coating layer as a whole. The second coating layer fills the scale regions, and the portions of the second coating layer corresponding to the coated region and the portions corresponding to the scale regions are flush.
2. The needle scale structure of claim 1, wherein, The first coating layer and the second coating layer each include an insulating coating portion and a conductive coating portion, and the conductive coating portions of the first coating layer and the second coating layer correspond to each other.
3. The needle scale structure of claim 1, wherein, The conductive coating portion corresponds to at least an electrode portion near the needle tip on the needle body.
4. The needle scale structure of claim 3, wherein, The edges of the insulating coating portion and the conductive coating portion of the same coating layer seamlessly connect to each other.
5. The needle scale structure of claim 3, wherein, The covered area of the first coating layer and the second coating layer on the needle body does not include the needle tip of the needle body.
6. The needle scale structure of claim 1, wherein, The color of the first coating layer is one of red, yellow, blue, or one of the colors produced by mixing the three colors together or two by two.
7. The needle scale structure of claim 1, wherein The scale region is configured as an annular region continuously extending in the circumferential direction of the needle body.
8. The needle scale structure of claim 1, wherein, The scale regions and the coated regions are alternately distributed in the axial direction of the needle body, and the width of the scale regions in the axial direction of the needle body is less than the width of the coated regions adjacent thereto.
9. The structure according to claim 1 or 8, wherein The needle scale structure as claimed in any one of claims 1 to 9.
10. An ablation needle, characterized in that,