A disposable nasal skinning knife

Abstract

The application relates to the technical field of disposable nose skin preparation knives, and provides a disposable nose skin preparation knife which comprises a knife cover, a blade and a knife body, the knife cover comprises a conical cover body and a plurality of cutting holes, the cover body is internally provided with a cutting cavity, the plurality of cutting holes are distributed on the outer surface of the cover body and are respectively communicated with the cutting cavity, the opening edges of the cutting holes form cutting edges, the blade is rotationally arranged in the cutting cavity, the blade is driven to rotate so as to drive the blade edges to successively pass through the plurality of cutting edges to cut the nasal hair located between the two, and the blade is driven to rotate by the knife body. The conical cover body is arranged to completely protect the blade, the blade can be prevented from directly contacting the nasal cavity of a patient when penetrating into the nasal cavity of the patient, and the nasal cavity skin of the patient is effectively protected. The blade can interact with the cutting edges distributed on the knife cover, there is no end blind spot, any angle hair can be effectively cut, and the trimming efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of disposable nasal skin preparation razors, and more particularly to a disposable nasal skin preparation razor. Background Technology

[0002] Nasal shaving refers to the process of cleaning and preparing the nose and surrounding skin before nasal surgery. Its main purpose is to reduce the number of bacteria at the surgical site, prevent postoperative infection, and ensure the safety and effectiveness of the surgery. This practice arises because bacteria on the skin surface can enter the wound during surgery and cause infection, and shaving effectively reduces this risk. Furthermore, nasal shaving helps doctors to more clearly observe the surgical area, improving surgical precision. In summary, nasal shaving is a crucial preoperative preparation step, playing a vital role in ensuring a smooth surgical procedure and successful postoperative recovery for the patient.

[0003] In clinical practice, nasal hair must be completely removed during nasal prep for patients undergoing nasal surgery. Currently, this process primarily relies on scissors, which are often reused. The sterilization process for these scissors is cumbersome and prone to causing blade wear, reducing trimming efficiency and increasing sterilization costs. Furthermore, inadequate or improper sterilization can easily lead to cross-infection. Additionally, manually trimming nasal hair with scissors is laborious, time-consuming, and can easily damage the nasal cavity lining, posing certain safety risks.

[0004] To address the aforementioned issues, medical staff typically use electric nasal hair trimmers to trim the hair inside the patient's nasal cavity. However, this method suffers from the same disinfection and wear and tear problems. Furthermore, existing electric nasal hair trimmers are primarily designed to address the unsightly appearance of exposed nasal hair; their length is generally too short to completely remove the hair inside the nasal cavity. For example, patent CN211388891U discloses a button-operated manual nasal hair trimmer, which trims nasal hair by rotating an inner and outer blade, both ring-shaped and coaxial, in relative rotation. However, the outer blade has an open end facing the patient's nasal cavity, preventing it from interacting with the inner blade to cut the hair, thus affecting trimming efficiency. Moreover, because the end of the outer blade is not sealed, simply extending the length of both the inner and outer blades to reach deeper into the nasal cavity can cause the rotating inner blade to directly contact the patient's nasal skin, potentially damaging the nasal cavity. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a disposable nasal hair trimmer, which aims to solve the problem that existing electric nasal hair trimmers cannot penetrate deep into the nasal cavity to completely remove the hair inside the nasal cavity.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: a disposable nasal skin preparation knife, including a knife cover, a knife head and a knife body, wherein the knife cover includes: a conical cover body, and the cover body has a cutting cavity;

[0007] A plurality of cutting holes are distributed on the outer surface of the cover and are respectively connected to the cutting cavity. The cutting holes form a cutting edge facing the opening edge of the cutting cavity.

[0008] The blade head includes: a blade, which is rotatably disposed in the cutting cavity. The blade is driven to rotate so that the cutting edge of the blade sequentially passes through a plurality of cutting edges to cut the nose hairs located between them.

[0009] The blade body, the blade guard, and the blade are respectively disposed on the blade body, and the blade rotates under the drive of the blade body.

[0010] Furthermore, the cutting cavity is conical in shape, and the long axis of the cover, the long axis of the cutting cavity, and the rotation axis of the blade coincide with each other.

[0011] Furthermore, the cutting hole is strip-shaped and is arranged along the long axis of the cover.

[0012] Furthermore, the disposable nasal skin preparation knife also includes: a marking part, which is disposed on the outer surface of the cover and is used to indicate the distance between itself and the end of the cover away from the knife body.

[0013] Furthermore, the marking section includes two scale lines, the distance between the two scale lines and the end of the cover opposite to the blade being 5 mm and 10 mm.

[0014] Furthermore, the cutter head also includes: a drive shaft, which is detachably connected to the cutter body, and the blades are disposed on the drive shaft, with at least two blades evenly distributed on the drive shaft.

[0015] Furthermore, the drive shaft is provided with a lubricating oil groove along its radial direction for containing lubricating oil, and the blade portion is located within the lubricating oil groove.

[0016] Furthermore, the cutting head also includes a lubricating layer, which covers the cutting edge.

[0017] Furthermore, the blade is a manual blade.

[0018] Compared with existing technologies, this invention, by setting a conical cover to completely protect the blade, avoids direct contact between the blade and the patient's nasal cavity when penetrating deep into the nasal cavity, effectively protecting the patient's nasal skin. Furthermore, the blade interacts with the cutting edge covered by the blade cover, eliminating blind spots at the end and effectively cutting hair at any angle, improving trimming efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the disposable nasal skin preparation knife provided in this embodiment;

[0021] Figure 2 This is a schematic diagram showing the disassembly of the disposable nasal skin preparation knife provided in this embodiment;

[0022] Figure 3 yes Figure 2 A magnified schematic diagram of the partial structure at point A in the middle;

[0023] Figure 4 This is a cross-sectional view of the disposable nasal skin preparation knife provided in this embodiment.

[0024] In the diagram: 100, blade cover; 110, cover body; 120, cutting cavity; 130, cutting hole; 140, marking section; 200, blade head; 210, blade; 220, drive shaft; 221, lubricating oil groove; 300, blade body. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0026] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and 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 a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0029] This utility model provides, for example Figures 1 to 4 The disposable nasal shaving knife shown is designed to address the shortcomings of existing electric nasal hair trimmers that cannot reach deep into the nasal cavity to completely remove nasal hair.

[0030] This disposable nasal skin preparation knife mainly includes: a blade cover 100, a blade head 200, and a blade body 300.

[0031] The blade cover 100 includes a conical cover body 110 and a plurality of cutting holes 130 disposed on the outer surface of the cover body 110. The cover body 110 has a cutting cavity 120. The plurality of cutting holes 130 are distributed on the outer surface of the cover body 110 and are respectively connected to the cutting cavity 120. The cutting holes 130 form a cutting edge facing the opening edge of the cutting cavity 120.

[0032] Specifically, the cover 110 is inserted into the patient's nasal cavity. Its conical structure allows its outer surface to be curved, better conforming to the structure of the nasal vestibule. This allows hair inside the nasal cavity to more easily pass through the cutting holes 130 and enter the cutting cavity 120. The cutting holes 130 can be distributed at any location on the outer surface of the cover 110, avoiding blind spots and effectively cutting hair at any angle, thus improving trimming efficiency.

[0033] The blade head 200 includes a blade 210, which is rotatably disposed in the cutting cavity 120. The blade 210 is driven to rotate so that the cutting edge of the blade 210 sequentially passes through several cutting edges to cut the nose hairs located between them. The blade cover 100 and the blade 210 are respectively disposed on the blade body 300, and the blade 210 is driven to rotate by the blade body 300.

[0034] Specifically, the blade 210 can rotate in one direction or reciprocate, forming several cutting zones between the blade and several cutting edges. As the blade 210 rotates, the blade on the blade gradually approaches the cutting edge formed on one of the cutting holes 130. When hair from the nasal cavity passes through the cutting hole 130 and enters the cutting cavity 120, the hair is located within that cutting zone. When the blade 210 continues to rotate until the width of the cutting zone is zero, the hair is cut by both the blade and the cutting edge. Then, the blade 210 continues to rotate, forming other cutting zones between itself and the remaining cutting edges to cut other hair. The blade body 300 is detachable from the blade cover 100 and the blade 210. The blade cover 100, blade 210, and blade body 300 can be used individually, eliminating the need for repeated disinfection and cross-infection, thus improving work efficiency.

[0035] To address the aforementioned issues, medical staff typically use electric nasal hair trimmers to trim the hair inside the patient's nasal cavity. However, existing electric nasal hair trimmers are mainly designed to solve the problem of unsightly exposed nasal hair. They are generally short and cannot penetrate deep into the nasal cavity to completely remove the hair. Furthermore, patent CN211388891U discloses a button-type manual nasal hair trimmer, which trims nasal hair by rotating an inner and outer blade 200, both ring-shaped and coaxial, relative to each other. However, the outer blade 200 has an open end facing the patient's nasal cavity, preventing it from interacting with the inner blade 200 to cut the hair, thus affecting trimming efficiency. Moreover, because the end of the outer blade 200 is not sealed, simply extending the length of both the inner and outer blades 200 to penetrate the nasal cavity would cause the rotating inner blade 200 to directly contact the patient's nasal skin, potentially damaging the nasal cavity.

[0036] This invention, by setting a conical cover 110 to completely protect the blade 210, avoids direct contact between the blade 210 and the patient's nasal cavity when penetrating deep into the nasal cavity, effectively protecting the patient's nasal skin. Furthermore, the blade 210 interacts with the cutting edge covered by the blade cover 100, eliminating blind spots at the end and effectively cutting hair at any angle, improving trimming efficiency.

[0037] In some embodiments, such as Figure 1 , Figure 2 as well as Figure 4 As shown, the cutting cavity 120 is conical in shape, and the long axis of the cover 110, the long axis of the cutting cavity 120, and the rotation axis of the blade 210 coincide with each other.

[0038] Specifically, the above structure can better fit the structure of the nasal vestibule, making it easier to cut hairs at various angles within the nasal cavity.

[0039] In some embodiments, such as Figure 1 , Figure 2 as well as Figure 4 As shown, the cutting hole 130 is strip-shaped and is arranged along the long axis of the cover 110.

[0040] In some embodiments, such as Figure 1 , Figure 2 as well as Figure 4 As shown, the disposable nasal skin preparation knife also includes: a marking part 140, which is disposed on the outer surface of the cover 110 and is used to indicate the distance between itself and the end of the cover 110 away from the blade 300.

[0041] In actual use, in order to avoid the blade 200 from going too deep into the nasal cavity and causing damage to the patient's nasal skin, the distance between the marking part 140 and the end of the cover 110 away from the blade 300 can be obtained through the marking part 140, thereby obtaining the depth of insertion into the patient's nasal cavity and avoiding going too deep into the nasal cavity.

[0042] In some embodiments, such as Figure 1 , Figure 2 as well as Figure 4 As shown, the marking section 140 includes two scale lines, which are spaced 5 mm and 10 mm apart from the end of the cover 110 away from the blade 300.

[0043] The blade can be designed in different sizes to suit both children and adults. For example, the depth of an adult's nasal cavity from the anterior to the posterior nostrils is generally 10-14 cm, but this varies due to individual differences (such as gender, age, and facial bone development). With clear markings at 5 mm and 10 mm, medical staff can easily determine the depth to which the blade cover 100 is inserted into the patient's nasal cavity, effectively preventing the blade 200 from penetrating too deeply and causing skin damage.

[0044] In some embodiments, such as Figure 2 , Figure 3 as well as Figure 4 As shown, the cutter head 200 also includes: a drive shaft 220, which is detachably connected to the cutter body 300, and a blade 210 is disposed on the drive shaft 220, and at least two blades 210 are disposed on the drive shaft 220 and evenly distributed.

[0045] Preferably, one end of the drive shaft 220 is provided with an internal hexagonal slot, and the blade 300 is provided with a motor or manual rotation mechanism (such as the blade 300 of CN211388891U or CN202311147673.5) and extends an external hexagonal output shaft, which engages with the internal hexagonal slot to form a detachable transmission structure. With this configuration, the blade cover 100 and blade 210 can be installed once and used by a single person, while the blade 300 can be reused or used only once, effectively preventing cross-contamination. Preferably, one blade 300 can be used with different sized blade heads 200, detachably connected to the drive shaft 220, suitable for children or adults, adapting to more usage scenarios.

[0046] In some embodiments, such as Figures 2 to 4 As shown, the drive shaft 220 is provided with a lubricating oil groove 221 for containing lubricating oil along its radial direction, and the blade 210 is partially located in the lubricating oil groove 221.

[0047] Specifically, the opening of the lubricating oil groove 221 can be set to be relatively small, and a lubricating oil with high viscosity can be used, so that the lubricating oil in the lubricating oil groove 221 will not overflow on its own under normal storage conditions. When the drive shaft 220 rotates, the lubricating oil is subjected to centrifugal force and flows out from the opening of the lubricating oil groove 221 or is thrown onto the cutting cavity 120. The blade repeatedly rubs against the cutting edge, so the lubricating oil can lubricate the blade and the cutting edge, and can also reduce the friction between the blade 210 and the nose hair or skin, improve the smoothness of trimming, and reduce irritation and nasal discomfort. At the same time, since part of the blade 210 is located in the lubricating oil groove 221, the lubricating oil leaving the lubricating oil groove 221 can gradually flow along the blade body 300 of the blade 210 to the cutting edge, so that the blade and the cutting edge can be lubricated by the lubricating oil for a long time.

[0048] In some embodiments, the blade 200 further includes a lubricating layer that covers the blade edge.

[0049] Specifically, the lubricating layer reduces friction between the blade 210 and nasal hairs or skin, improving the smoothness of trimming while reducing irritation and nasal discomfort.

[0050] In some embodiments, such as Figure 1 and Figure 2 As shown, the blade 300 is a manual blade 300. Blades 300 such as those in CN211388891U or CN202311147673.5, compared to electric blades 300, avoid the problem of not being able to remove hair when there is no power. They also reduce manufacturing costs (e.g., the entire blade is made of biodegradable plastic), thus lowering the cost of single-use applications, eliminating the need for cleaning, and improving work efficiency.

[0051] In summary, a disposable nasal shaving razor is provided, comprising a razor cover, a blade, and a blade body. The razor cover includes a conical body and several cutting holes, with a cutting cavity inside the body. The cutting holes are distributed on the outer surface of the body and communicate with the cutting cavity. The opening edges of the cutting holes form cutting edges. The blade is rotatably positioned within the cutting cavity. The blade is driven to rotate, causing its cutting edge to sequentially slice through the cutting edges to cut the nasal hairs located between them. The blade is driven to rotate by the blade body. This invention, by using a conical body to completely protect the blade, avoids direct contact between the blade and the patient's nasal cavity when penetrating deep into the nasal cavity, effectively protecting the patient's nasal skin. Furthermore, the blade interacts with the cutting edges distributed throughout the razor cover, eliminating blind spots at the end and effectively cutting hairs at any angle, improving trimming efficiency.

[0052] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A disposable nasal skin preparation knife, comprising a blade cover, a blade head, and a blade body, characterized in that, The blade cover includes: a conical cover body, the cover body having a cutting cavity; A plurality of cutting holes are distributed on the outer surface of the cover and are respectively connected to the cutting cavity. The cutting holes form a cutting edge facing the opening edge of the cutting cavity. The blade head includes: a blade, which is rotatably disposed in the cutting cavity. The blade is driven to rotate so that the cutting edge of the blade sequentially passes through a plurality of cutting edges to cut the nose hairs located between them. The blade cover and the blade are respectively disposed on the blade body, and the blade is driven to rotate by the blade body.

2. The disposable nasal skin preparation knife according to claim 1, characterized in that, The cutting cavity is conical in shape, and the long axis of the cover, the long axis of the cutting cavity, and the rotation axis of the blade coincide with each other.

3. The disposable nasal skin preparation knife according to claim 2, characterized in that, The cutting hole is strip-shaped and is arranged along the long axis of the cover.

4. The disposable nasal skin preparation knife according to claim 1, characterized in that, The disposable nasal skin preparation knife further includes: a marking part, which is disposed on the outer surface of the cover and is used to indicate the distance between itself and the end of the cover away from the knife body.

5. The disposable nasal skin preparation knife according to claim 4, characterized in that, The marking section includes two scale lines, with a distance of 5 mm and 10 mm between the two scale lines and the end of the cover opposite to the blade.

6. The disposable nasal skin preparation knife according to claim 1, characterized in that, The cutter head further includes: a drive shaft, which is detachably connected to the cutter body, and the blades are disposed on the drive shaft, with at least two blades evenly distributed on the drive shaft.

7. The disposable nasal skin preparation knife according to claim 6, characterized in that, The drive shaft is provided with a lubricating oil groove along its radial direction for containing lubricating oil, and the blade portion is located within the lubricating oil groove.

8. The disposable nasal skin preparation knife according to claim 1, characterized in that, The cutting head also includes a lubricating layer, which covers the cutting edge.

9. The disposable nasal skin preparation knife according to claim 1, characterized in that, The blade is a manual blade.

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