Bending fitting type skin preparation scissors

Abstract

The utility model relates to the field of medical instruments, in particular to a pair of bending fitting type skin preparation scissors, which comprises two scissor half bodies, two handles are arranged at the rear ends of the two scissor half bodies, an upper blade and a lower blade which are pivoted with each other are arranged at the front ends of the two scissor half bodies, and the upper blade and the lower blade are arc-shaped blades tilting upwards. The distance between the cutting edges of the lower blade and the upper blade is gradually increased from the tail to the head, and a distance dividing mark is arranged on the surface of the upper blade. Through the change of the distance between the two cutting edges, the hair scissors can effectively adapt to different hair characteristics for cutting.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a bending and fitting type of skin preparation scissors. Background Technology

[0002] In fields such as surgery, cosmetic surgery, and clinical nursing, preoperative skin preparation is a crucial step in preventing postoperative wound infections. Commonly used skin preparation tools include razors, electric shavers, and scissors. Among these, scissors have gradually become the preferred tool in clinical practice due to their low cost and minimal risk of causing local skin damage.

[0003] Traditional skin-preparing scissors are difficult to apply to complex body contours such as the armpits and perineum, resulting in poor skin-preparing effects. To address this issue, a series of improved skin-preparing scissors have emerged in the present technology. For example, an axillary odor removal scissor with publication number CN208339570U has an upwardly curved upper and lower blade structure. When removing axillary odor, its cutting path matches the physiological characteristics of the armpit, allowing for close contact with the skin and a better cutting effect.

[0004] However, existing technologies still present other technical challenges in practical application. Clinically, there are different needs for skin preparation in various locations and among different individuals, with varying hair thickness and texture. Most current skin preparation scissors use a fixed-gap blade structure, making it difficult to precisely adapt to the different hair cutting requirements: when processing fine, soft hair, the relatively large blade spacing allows hair to easily slip through the gaps, resulting in incomplete cutting and leaving a large amount of stubble; while with coarse, hard hair, the smaller fixed gap may cause the scissors to jam, affecting preparation efficiency, accelerating blade wear, and reducing tool lifespan. Therefore, developing skin preparation scissors that can closely conform to the complex contours of human skin and effectively adapt to different hair characteristics has become a crucial issue that urgently needs to be addressed to improve the quality of clinical skin preparation. Utility Model Content

[0005] The present invention aims to provide a bending and fitting shaving scissors to solve the problem that the existing technology cannot effectively adapt to different hair characteristics.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The bending and fitting leather preparation scissors include two scissor halves. The rear ends of the two scissor halves are two handles, and the front ends of the two scissor halves are upper and lower blades that are pivotally connected to each other. Both the upper and lower blades are upward-curved arc blades. The distance between the blades of the lower and upper blades gradually increases from the tail to the head. The upper blade surface is provided with a distance division mark.

[0008] Preferably, as an improvement, the thickness of the bottom of the upper blade gradually decreases from its tail to its head.

[0009] Preferably, as an improvement, the spacing division mark is a text mark, a color mark, or a symbol mark.

[0010] Preferably, as an improvement, the upper blade or the lower blade is provided with a guide comb.

[0011] Preferably, as an improvement, the guide comb is disposed at the bottom of the lower blade.

[0012] Preferably, as an improvement, the cutting edge of the upper or lower blade is provided with anti-slip teeth.

[0013] Preferably, as an improvement, the density of the anti-slip teeth gradually increases from the tail to the head.

[0014] Preferably, as an improvement, the anti-slip toothed edge is a helical tooth.

[0015] Preferably, as an improvement, a locking structure is provided on one side of the two handles facing each other. The locking structure is a slot on one handle and a plastic clip fixed on the other handle that can be locked in the slot; or the locking structure is two magnets that can attract each other, and the two magnets are respectively fixed on one side of the two handles facing each other.

[0016] Preferably, as an improvement, the free ends of the upper and lower blades are provided with smooth tips to prevent punctures.

[0017] The principles and beneficial effects of this solution are as follows:

[0018] 1. In this design, the upper and lower blades are set to an upward-curving arc shape, which allows them to closely conform to the patient's skin and improve the cutting effect. In addition, the front of the scissors has an upward curve, and the back has a downward curve, which can be flexibly flipped to fit different parts of the skin in actual use, achieving efficient skin preparation.

[0019] Building upon the above, the distance between the blades of the lower and upper blades gradually increases from the tail to the head, allowing for targeted cutting based on the thickness of the hair. For fine, soft hair, the distance between the blades at the tail of the scissors is smaller, ensuring a tight grip on the hair during preparation. Since fine, soft hair has relatively weak shear resistance, the smaller distance effectively prevents hair from slipping through the blade gaps. Simultaneously, the smaller distance allows the upper and lower blades to more precisely conform to the hair, requiring less force to cut it, reducing damage from repeated cutting, ensuring a clean cut of fine, soft hair, and minimizing stubble residue.

[0020] For coarse, stiff hair, the scissor blades have a wider spacing, providing ample space for the hair to enter and preventing it from getting stuck due to insufficient spacing. Coarse, stiff hair typically has high shear strength and requires greater shearing force to cut. The scissor head, as the point of maximum leverage, generates greater shearing force according to the lever principle. Combined with the wider blade spacing, this allows for the smooth cutting of coarse, stiff hair. The larger spacing also distributes the shearing force, preventing excessive localized force that could lead to excessive blade wear, extending the scissor's lifespan while ensuring that coarse, stiff hair is cleanly and efficiently cut, achieving efficient skin preparation.

[0021] 2. The spacing markings on the upper blade surface provide clear operating guidance for users, helping them quickly determine the applicable hair types for different areas and select the appropriate area for cutting. This further improves the accuracy and convenience of targeted processing of fine and coarse hair. Diverse markings using text, colors, or symbols visually display the spacing information of different parts of the blade. Users do not need complex learning; they can quickly select the appropriate cutting area based on the visual markings.

[0022] 3. This solution achieves the variation in the distance between the upper and lower blades by gradually changing the thickness at the bottom of the upper blade. The gradual change in the thickness at the bottom of the upper blade can form a more precise match with the lower blade, making the gradual change in the distance between the upper and lower blades from the tail to the head smoother and more accurate.

[0023] Furthermore, the variation in blade thickness also affects the force distribution of the scissors: the thicker tail provides a stable support base for the lever structure, allowing it to withstand greater forces during cutting and preventing blade deformation or damage when handling coarse hair. The thinner head design reduces the weight at the tip of the scissors, shifting the overall center of gravity towards the handle, making it easier for the user to control the scissors and reducing hand strain, especially during prolonged shaving operations. This effectively reduces hand fatigue and improves operational comfort and smoothness. Using this type of scissors, users can quickly complete shaving work for different hair types without frequently adjusting operating methods or changing tools, making the shaving process more efficient.

[0024] 4. The guide comb uses a toothed structure to comb the hair, arranging it neatly before it enters the cutting area of ​​the blade. During skin preparation, the guide comb contacts the hair first, straightening any tangles and preventing knots, allowing the scissors to cut more accurately and efficiently. Furthermore, by placing the guide comb on the lower blade, it forms a physical barrier when the scissors approach the skin during preparation, separating the skin from the blade and reducing the chance of direct contact, thus lowering the risk of cuts. In addition, placing the guide comb on the lower blade avoids increasing the weight and volume of the upper blade, maintaining the overall compactness and operational stability of the scissors.

[0025] 5. The anti-slip serrated blade increases the friction between the blade and the hair, fixing the hair in place during cutting and preventing it from slipping. Whether the hair is smooth and slippery or has a special texture, the anti-slip serrated blade ensures precise cutting, reducing problems such as uneven cuts and residue caused by hair slippage. At the same time, the stable grip reduces abnormal blade wear, extends the life of the scissors, and improves the skin preparation effect and tool durability.

[0026] 6. The density of the anti-slip serrations gradually increases from the tail to the head, matching the change in blade spacing. In the small-spacing area at the tail where fine hairs are being processed, the lower serration density avoids excessive damage to the hair; while in the large-spacing area at the head where coarse hairs are being processed, the higher serration density enhances grip. This targeted design effectively secures coarse hairs while protecting fine hairs, reducing pulling damage and ensuring efficient cutting in different areas. This improves the safety and effectiveness of prep work, reducing hair residue and stubble. Furthermore, the oblique serrations generate a force along the tooth direction when in contact with hair, pulling the hair towards the blade and significantly increasing friction. Compared to straight serrations, oblique serrations are more adaptable to hairs growing in different directions, effectively preventing hair from slipping during cutting.

[0027] 7. The locking structure of the handle comes in two forms: slots and plastic clips, and magnetic attachment. Slots and plastic clips utilize the elastic deformation of the material to lock and unlock, ensuring a secure fit; magnetic attachment uses magnetic force to tightly adhere to the handle, making opening and closing convenient. When not in use, the locking structure prevents the scissors from accidentally opening, ensuring safe storage and carrying; when in use, it can be quickly unlocked without affecting operation.

[0028] 8. The free ends of both the upper and lower blades are designed with rounded tips to eliminate sharp edges. During skin preparation, even if the blade accidentally comes into contact with the skin due to patient movement or operator error, the rounded shape can prevent punctures. Especially when dealing with sensitive areas such as skin folds and depressions, or with uncooperative patients, the rounded tips allow for safer, deeper insertion, reducing scratching and damage to skin tissue and providing greater safety during the skin preparation process. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0030] Figure 2 This is a schematic diagram showing the distance between the cutting edges of the upper blade and the lower blade in Embodiment 1 of this utility model.

[0031] Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0032] Figure 4 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0033] Figure 5 for Figure 4 An enlarged schematic diagram of part A in the middle.

[0034] Figure 6 This is a structural schematic diagram of Embodiment 6 of the present invention. Detailed Implementation

[0035] The following detailed description illustrates the specific implementation method:

[0036] The reference numerals in the accompanying drawings include: handle 1, lower blade 2, upper blade 3, anti-slip toothed blade 31, spacing 4, guide comb 5, clamp head 6, and rounded head 7.

[0037] Example 1:

[0038] like Figure 1 and Figure 2 As shown, the bending and fitting leather preparation scissors include two scissor halves. The rear ends of the two halves are two handles 1, and the front ends are an upper blade 3 and a lower blade 2, pivotally connected by screws. Both the upper blade 3 and the lower blade 2 are upward-curving arc-shaped blades, and their free ends are integrally formed with a smooth, anti-puncture head 7. The thickness of the upper blade 3 gradually decreases from its tail to its head, causing the distance 4 between the blades of the lower blade 2 and the upper blade 3 to gradually increase from its tail to its head. The distance 4 varies from 1-5 mm. Figure 2 The distance 4 between the blades of the lower blade 2 and the upper blade 3 is only for illustration and is not the actual distance 4. The surface of the upper blade 3 is provided with a distance dividing mark (not shown in the figure). The distance dividing mark can be a text mark, a color mark, or a symbol. In this embodiment, it is a color mark. The head (free end) of the upper blade 3 is marked with a red mark and the tail is marked with a green mark. The red mark indicates that the distance 4 is larger and the green mark indicates that the distance 4 is smaller. Other colors can also be used in actual use.

[0039] In practical use, the user holds the handle 1 and applies power through the handle 1, using the screw pivot point as a fulcrum to open and close the upper blade 3 and the lower blade 2. Because the upper blade 3 and the lower blade 2 have an upward-curving arc structure, they can closely conform to the irregular skin contours of the armpit, perineum, and other areas, achieving precise positioning. Furthermore, the rounded tips 7 at the free ends of the upper blade 3 and the lower blade 2 effectively prevent accidental skin punctures during operation, ensuring safe operation.

[0040] Example 2:

[0041] like Figure 3 As shown, the difference between this embodiment and Embodiment 1 is that a guide comb 5 is provided on the upper blade 3 or the lower blade 2. In this embodiment, the guide comb 5 is fixed to the bottom of the lower blade 2. Using this embodiment, during the skin preparation process, the guide comb 5 first contacts the hair, straightens the messy hair, avoids tangling and knotting, and enables the scissors to complete the cutting action more accurately and efficiently.

[0042] Example 3:

[0043] Combination Figure 4 and Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the upper blade 3 or the lower blade 2 is provided with an anti-slip tooth 31. In this embodiment, the anti-slip tooth 31 is provided on the blade of the upper blade 3. Providing the anti-slip tooth 31 can increase the friction between the blade and the hair, thereby preventing the hair from slipping out of the gap between the upper blade 3 and the lower blade 2, and improving the hair cutting effect.

[0044] Example 4:

[0045] The difference between this embodiment and embodiment 3 is that the density of the anti-slip teeth 31 gradually increases from the root to the head of the upper blade. In this embodiment, the density of the anti-slip teeth 31 matches the variation in the blade spacing 4, enabling targeted processing of hair. Specifically, the smaller spacing area at the tail of the blade is used for processing fine and soft hair, where the lower density of the anti-slip teeth effectively avoids excessive damage to the hair; while the larger spacing area at the head of the blade, where the higher density of the anti-slip teeth enhances the gripping force, is used to cut coarse and stiff hair.

[0046] Example 5:

[0047] The difference between this embodiment and Embodiment 4 is that the anti-slip toothed blade 31 is oblique, which increases friction. Compared to straight teeth, oblique teeth are more adaptable to hair with different growth directions and can effectively prevent hair from slipping during cutting.

[0048] Example 6:

[0049] like Figure 6As shown, the difference between this embodiment and Embodiment 1 is that a locking structure is provided on the opposite side of the two handles 1. In this embodiment, the locking structure consists of a slot on one handle 1 and a plastic clip 6 glued to the other handle 1, which can be locked in the slot. In other embodiments, the locking structure can also be two magnets that can attract each other, with the two magnets glued to the opposite side of the two handles 1 respectively.

[0050] A locking structure is provided on the opposite side of the handle 1. When not in use, the two handles 1 can be locked by the locking structure to prevent the scissors from opening or closing accidentally and to ensure safe storage and carrying.

[0051] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A bending and fitting type skin preparation scissors, comprising two scissor halves, the rear ends of the two scissor halves being two handles, and the front ends of the two scissor halves being an upper blade and a lower blade pivotally connected to each other, both the upper blade and the lower blade being upwardly curved arc-shaped blades, characterized in that: The distance between the cutting edges of the upper blade and the lower blade gradually increases from the tail to the head, and the upper blade surface is provided with a distance division mark.

2. The fliipper skinner of claim 1 wherein: The thickness of the bottom of the upper blade gradually decreases from the tail to the head.

3. The fexed-blade skinning knife of claim 2, wherein: The distance division mark is a word mark or a color or symbol representation.

4. The fexed-blade skinning knife of claim 1, wherein: A guide comb is arranged on the upper blade or the lower blade.

5. The fexed-blade skinning knife of claim 4, wherein: The guide comb is arranged on the bottom of the lower blade.

6. The fexed-blade skinning knife of claim 1, wherein: Anti-skid teeth are arranged on the cutting edges of the upper blade or the lower blade.

7. The fexed-blade skinning knife of claim 6, wherein: The density of the anti-skid teeth gradually increases from the tail to the head.

8. The fexed-blade skinning knife of claim 7, wherein: The anti-skid teeth are bevel teeth.

9. The fexed-blade skinning knife of any of claims 1-8, wherein: Opposite sides of the two handles are provided with locking structures, which are clamping grooves opened on one handle and plastic clamping heads fixed on the other handle and capable of being clamped in the clamping grooves; or the locking structures are two magnets capable of being adsorbed to each other, and the two magnets are fixed on opposite sides of the two handles respectively.

10. The fexed scissor skinning tool of claim 9, wherein: The free ends of the upper blade and the lower blade are provided with smooth heads for preventing stab injury.

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