Surgical dilator

Abstract

The invention relates to the technical field of medical instruments, in particular to a surgical dilator which comprises a main body part, one end of the main body part is provided with a light inlet part, the light inlet part is connected with a light source, and the other end of the main body part is a traction part; the light guide part is arranged on the main body part; the number of the light guide parts is two or more, and all the light guide parts are stacked on the main body part layer by layer; each light guide part is provided with a light outlet, and the light outlet direction of the light outlet faces the traction part. According to the surgical dilator, light is emitted towards the surgical site through the light guide parts stacked layer by layer, a multi-stage, multi-point and multi-face light emitting illumination mode is formed, the illumination range can be enlarged through multi-stage and multi-face illumination range stacking, the illumination effect is ensured, the illumination uniformity can be improved through multi-stage and multi-face illumination range stacking, and the illumination effect is improved. Ghosting of other surgical instruments in the surgical area can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a surgical dilator. Background Art

[0002] Currently, surgical procedures often require the use of traction instruments to dilate wounds. This often requires additional illumination of the surgical site, placing high demands on the location and method of the illumination port to ensure both brightness and effectiveness. Most existing dilators utilize a single light source, with the port positioned high, which can affect the surgical field of view. This leads to poor illumination uniformity at the surgical site, creating bright and dark areas that hinder surgical performance. Summary of the Invention

[0003] The purpose of the present application is to provide a surgical dilator to solve, to a certain extent, the technical problem in the prior art that the existing dilator with lighting function has poor light outlet effect and easily produces bright areas that affect surgical operations.

[0004] The present application provides a surgical dilator, comprising: A main body, one end of which is provided with a light incident portion connected to a light source, and the other end of which is a traction portion; A light guide portion, the light guide portion being disposed on the main body portion; the number of the light guide portions is two or more, and all the light guide portions are stacked layer by layer and disposed on the main body portion; Each of the light guide parts is provided with a light outlet, and the light outlet direction of the light outlet is toward the traction part.

[0005] In the above technical solution, further, the light incident portion includes: a connection port, the connection port being connected to the light source; A light inlet is disposed in the connection port. In any of the above technical solutions, further, a first-level step portion is formed between two adjacent light-guiding portions, and a second-level step portion is formed between the light-guiding portion and the traction portion; the first-level step portion and the second-level step portion each include a step vertical surface and a step horizontal surface, and the light outlet is provided on the step vertical surface; The step facade is a plane; or the step facade is a curved surface.

[0006] In any of the above technical solutions, further, the angle between the step vertical surface and the step horizontal surface is α, 30°≤α≤150°; The angle α of the first-level step portion and the angle of the second-level step portion are the same or different.

[0007] In any of the above technical solutions, further, a concave portion is provided on a surface of the main body facing away from the light guide portion, the concave portion is recessed toward the inside of the light guide portion, and the concave portion extends along the length direction of the main body; The depth of the recess is 0.2-20 mm.

[0008] In any of the above technical solutions, further, the step vertical surface of the recessed portion close to the step portion is a fault surface, and the distance between the fault surface and the step vertical surface is 0.2-10 mm.

[0009] In any of the above technical solutions, further, the width of the main body is greater than the width of the light guide portion, the side of the main body protrudes relative to the side of the light guide portion to form a wing, and the wing is flush with one of the reflective surfaces.

[0010] In any of the above technical solutions, further, the local bending of the main body forms an arc-shaped bend; the arc radius of the arc-shaped bend is 10mm-500mm.

[0011] In any of the above technical solutions, further, a plurality of protrusions are provided on a surface of the traction portion on a side away from the light guiding portion.

[0012] Compared with the prior art, the present invention has the following advantages: The surgical expander provided in the present application includes: a main body, a light input portion is provided at one end of the main body, the light input portion is connected to a light source, and the other end of the main body is a traction portion; a light guide portion, the light guide portion is provided in the main body; the number of light guide portions is at least two or more, and all light guide portions are stacked layer by layer and provided in the main body; each light guide portion is provided with a light outlet, and the light outlet direction is toward the traction portion. The surgical expander provided in the present application emits light toward the surgical site through the light guide parts stacked layer by layer, forming a multi-level, multi-point, and multi-faceted lighting mode. The superposition of multiple levels of lighting range can increase the illumination range and ensure the lighting effect. The superposition of multiple levels of lighting range can increase the uniformity of lighting and can reduce the ghosting of other surgical instruments in the surgical area. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 A schematic structural diagram of a surgical dilator provided in an embodiment of the present application; Figure 2 Another structural schematic diagram of the surgical dilator provided in an embodiment of the present application; Figure 3 Another structural schematic diagram of the surgical dilator provided in an embodiment of the present application; Figure 4 Another perspective view of the surgical dilator provided in an embodiment of the present application; Figure 5 for Figure 4 Cross-sectional view along AA; Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the provided surgical dilator at point B.

[0015] Reference numerals: 1-main body, 101-arc bend, 102-connection port, 103-light inlet, 2-primary light guide part, 3-secondary light guide part, 4-light outlet, 5-primary step part, 6-secondary step part, 7-traction part, 8-concave part, 9-fault surface, 10-side wing, 11-convex part, a-step facade, b-reflection surface. DETAILED DESCRIPTION

[0016] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0017] The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.

[0018] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0019] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0021] Refer to the following Figures 1 to 6 The surgical dilator according to the embodiments of the present application is described.

[0022] See also Figures 1 to 6 As shown, an embodiment of the present application provides a surgical dilator. The surgical dilator includes a main body 1 and two or more light guides. All light guides are of different lengths and are stacked layer by layer on the main body 1. Preferably, the light guides and the main body 1 are integrally formed to form a single structure. The surgical dilator is made of a light-guiding fiber or a transparent light guide made of quartz or a polymer material. One end of the main body 1 is provided with a light input portion, which is connected to a light source. Light emitted by the light source enters the main body 1 through the light input portion and is emitted to each light guide portion. The light is then transmitted through each light guide portion by total internal reflection. Each light guide portion has a light outlet 4 formed at one end away from the light input portion. Light is ultimately emitted through each light outlet 4 and directed toward a traction portion 7 and toward the surgical site. The other end of the main body 1 is a traction portion 7. Preferably, the traction portion 7 is plate-shaped, which facilitates insertion into the surgical site to pull the surgical site and expand the surgical field of view.

[0023] It can be seen that the surgical expander provided by the present application emits light toward the surgical site through the light guide parts stacked layer by layer, forming a multi-level, multi-point, and multi-faceted lighting mode. The superposition of multiple levels of lighting range can increase the irradiation range and ensure the lighting effect. The superposition of multiple levels of lighting range can increase the uniformity of lighting, reduce the ghosting of other surgical instruments in the surgical area, and have the effect of a shadowless lamp.

[0024] Specifically, the surgical dilator is in the shape of a long strip, one end of which is a light input part for connecting a light source, preferably a mobile light source, and the other end is a traction part 7 for intervening in the surgical site. When in use, the doctor holds one end of the light input part to operate the surgical dilator.

[0025] The main body 1 is provided with a bending portion, and the local bending of the main body 1 forms an arc-shaped bend 101, so that the main body 1 is L-shaped as a whole. Preferably, the arc radius of the arc-shaped bend 101 is 10mm-500mm, and the inner wall surface of the arc-shaped bend 101 corresponds to the inner wall surface of the surgical expander, and the outer wall surface of the arc-shaped bend 101 corresponds to the outer wall surface of the surgical expander.

[0026] Furthermore, the light input portion includes a connection port 102 and a light inlet 103. The connection port 102 is annular, and its inner wall surface is provided with internal threads or a snap-fit ​​connection. The connection port 102 is connected to the light source via threads or a snap-fit ​​connection. The connection port 102 is arranged around the light inlet 103, and the light inlet 103 has a light-entry surface. Light emitted by the light source enters the main body 1 and each light guide portion through the light inlet 103.

[0027] The number of light guide parts is two or more. The following takes the number of two light guide parts as an example. The two light guide parts are a primary light guide part 2 and a secondary light guide part 3. The primary light guide part 2 is arranged close to the main body 1 on the outer surface of the main body 1. When the number of light guide parts is more than two, they are arranged in a stacked manner between the primary light guide part 2 and the secondary light guide part 3 according to the same rule.

[0028] Furthermore, the secondary light guide 3 is provided on the primary light guide 2, and a first step 5 is formed between the first light guide 2 and the second light guide 3. The first step 5 includes a step elevation a and a step transverse surface, and the step elevation a is one of the first light outlets 4. The length of the main body 1 is greater than that of the primary light guide 2. The portion of the main body 1 that protrudes from the primary light guide 2 is the traction portion 7. A secondary step portion 6 is formed between the outer surfaces of the primary light guide 2 and the traction portion 7. The secondary step portion 6 also includes a step elevation a and a step transverse surface. The step elevation a of the secondary step portion 6 is another level of light outlet 4. The light outlet 4 of the two-level light guide can be a plane or a curved surface. When the light outlet 4 is a curved surface, it can be an arc surface or a folded surface formed by multiple surfaces to expand the luminous radiation range of the light outlet 4. In addition, each light outlet 4 can be the same or different, and multiple light outlets 4 can adopt different combinations of planes and / or curved surfaces.

[0029] Furthermore, the angle between the step elevation a and the step transverse surface of each step portion 5 is α, 30°≤α≤150°, and when α is between 90° and 150°, the light entering each light guide portion is directly emitted through the corresponding light outlet 4.

[0030] Each step's transverse surface serves as a reflective surface b for light emitted from the light outlet 4 on the previous level. When α is within the range of 30° to 90°, light emitted from the light outlet 4 is first projected onto reflective surface b. After being reflected by reflective surface b, the light forms an illumination range that illuminates the surgical site. It should be noted that the angle α between the step's vertical surface a and the step's transverse surface at different levels can be the same or different.

[0031] The reflective surface b can be a plane or a curved surface. When the reflective surface b is a curved surface, it can be an arc surface. The arc opening of the arc surface can be inverted or outward, or it can be a folded surface formed by multiple surfaces to expand the luminous radiation range of the light outlet 4 and increase the regional brightness. The arc radius of the reflective surface b ranges from 10 mm to infinity. The multi-level reflective surface b can be a plane or a curved surface at the same time, or a combination of planes and curved surfaces can be used between the multi-level reflective surfaces b. In addition, by combining light outlets 4 of different combinations and light outlets 4 of different angles α, the different reflective paths and light emission paths between the reflective surfaces b increase the light output diversity of the surgical dilator, allowing light to be irradiated to different specific surgical areas, thereby expanding the irradiation range of the surgical dilator.

[0032] In addition, the reflective surface b can be a mirror surface, which helps to increase the brightness of a specific area; the reflective surface b can also be a non-mirror surface, which helps to illuminate the entire surgical cavity. The choice can be made according to usage requirements.

[0033] Furthermore, a recess 8 extending along the length direction of the main body 1 is formed on the back of the main body 1. The recess 8 is recessed from the inner surface of the main body 1 toward the outer surface. The depth of the recess 8 is 0.2-10 mm. The recess 8 is recessed into the interior of the light guide part, so that the inner surface of the light guide part forms a thinning effect, and then a fault plane 9 is formed on the back of the step facade a, that is, the boundary wall of the recess 8 and the step part. The distance between the fault plane 9 and the step facade a is D, preferably, 0.2 mm ≤ D ≤ 10 mm. The distance between the fault plane 9 and the step facade a within this range can, on the one hand, ensure the structural strength of the surgical dilator and avoid the surgical dilator being subjected to force and breaking at the step part when the surgical position is pulled. On the other hand, the distance D between the fault plane 9 and the step facade a corresponds to the thickness of the light outlet 4, which affects the light output of the light outlet 4 and can be used as a light outlet gate, especially for the light outlet 4 of the primary light guide part 2. This design is conducive to reducing the leakage of invalid light from the traction part 7 and improving the effective light utilization rate and the brightness of the surgical cavity.

[0034] Furthermore, the width of the main body 1 is greater than that of the light guide, forming wings 10 on either side of the light guide. These wings 10 arch relative to the outer wall of the main body 1, enhancing the structural rigidity and aesthetic appearance of the surgical dilator. They also allow the wings 10 to align with one of the reflective surfaces b, thereby expanding the reflective area of ​​that reflective surface b and improving the utilization of effective light, or enhancing the brightness of a specific location within the surgical area. The curvature of the wings 10 can be consistent with or different from that of the main body 1, and can be adjusted based on the specific surgical procedure.

[0035] Furthermore, the traction portion 7 has an arc. Specifically, the traction portion 7 has an arc in both its width direction and length direction. The traction portion 7 is bent toward the inner surface of the surgical expander in the length direction to intervene in the surgical cavity. The traction portion 7 has an arc opening in the width direction toward the outside of the surgical expander. Preferably, the arc radius of the traction portion 7 is 10-500mm.

[0036] Furthermore, a protrusion 11 is provided on the inner wall surface of the surgical expander at least in the area where the traction part 7 is located. The protrusion 11 can specifically be a plurality of parallel strip-shaped protrusions arranged at intervals, and the length of the strip-shaped protrusions extends along the width direction of the main body 1. It can also be a plurality of point-shaped protrusions arranged at intervals, or a quadrilateral strip-shaped protrusion, which can reduce the risk of the surgical expander slipping off the tissue when pulling the surgical position.

[0037] Preferably, the inner surface of the surgical dilator is entirely provided with a convex portion 11, which not only improves the friction between the surgical site and the surgical site, but also improves the friction when the doctor holds the surgical dilator.

[0038] To sum up, this surgical expander emits light toward the surgical site through the stacked light guides, forming a multi-level, multi-point, and multi-faceted lighting mode. The superposition of multiple levels of lighting range can increase the irradiation range and ensure the lighting effect. The superposition of multiple levels of lighting range can increase the uniformity of lighting, which can reduce the ghosting of other surgical instruments in the surgical area. It can also be designed for specific surgical procedures as an instrument that can increase lighting uniformity, reduce ghosting, and increase the brightness of specific surgical positions.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A surgical dilator, characterized in that: include: A main body, one end of which is provided with a light incident portion connected to a light source, and the other end of which is a traction portion; A light guide portion, the light guide portion being disposed on the main body portion; the number of the light guide portions is two or more, and all the light guide portions are stacked layer by layer and disposed on the main body portion; Each of the light guide parts is provided with a light outlet, and the light outlet direction of the light outlet is toward the traction part.

2. The surgical dilator according to claim 1, characterized in that The light incident portion includes: a connection port, the connection port being connected to the light source; A light inlet is disposed in the connection port.

3. The surgical dilator according to claim 1, wherein: A primary step portion is formed between two adjacent light guide portions, and a secondary step portion is formed between the light guide portion and the traction portion; both the primary step portion and the secondary step portion include a step vertical surface and a step horizontal surface, and the light outlet is provided on the step vertical surface; The step facade is a plane; or the step facade is a curved surface.

4. The surgical dilator according to claim 3, characterized in that The angle between the step elevation and the step transverse surface is α, 30°≤α≤150°; The angle α of the first-level step portion and the angle of the second-level step portion are the same or different.

5. The surgical dilator according to claim 3, characterized in that The step transverse surface forms a reflecting surface, and the reflecting surface is a plane or a curved surface.

6. The surgical dilator according to claim 3, characterized in that A concave portion is provided on a surface of the main body portion facing away from the light guide portion, the concave portion is recessed toward the inside of the light guide portion, and the concave portion extends along the length direction of the main body portion; The depth of the recess is 0.2-20 mm.

7. The surgical dilator according to claim 6, characterized in that The step vertical surface of the recessed portion close to the step portion is a fault surface, and the distance between the fault surface and the step vertical surface is 0.2-10 mm.

8. The surgical dilator according to claim 5, characterized in that The width of the main body is greater than the width of the light guide portion. Side edges of the main body protrude relative to the side edges of the light guide portion to form side wings, and the side wings are flush with one of the reflective surfaces.

9. The surgical dilator according to claim 1, wherein: The local bending of the main body forms an arc-shaped bend; the arc radius of the arc-shaped bend is 10mm-500mm.

10. The surgical dilator according to any one of claims 1 to 9, characterized in that: A plurality of protrusions are provided on a surface of the traction portion on one side facing away from the light guiding portion.

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