Skin preparation knife

Abstract

The utility model provides a skin preparation knife which comprises a knife handle and a knife head assembly fixedly arranged on the knife handle, the knife head assembly comprises a knife head frame and a blade fixedly connected with the knife head frame, a plurality of comb tooth grooves are formed in the knife head frame, one side of the groove bottom of each comb tooth groove extends inwards to form an arc-shaped cutting groove, and the arc-shaped cutting groove is formed in the knife head frame. The blade comprises a blade body, the blade body is provided with cutter teeth corresponding to the comb tooth grooves one to one, the cutting edges of the cutter teeth are matched with the arc-shaped cutting grooves, the arc-shaped cutting grooves are formed, the cutting edges of the blade are arranged in the arc-shaped cutting grooves, original scraping cutting is changed into rotary cutting, and the cutting edges of the blade are arranged in the arc-shaped cutting grooves. The cleaning is convenient, and the human skin cannot be scratched.

Description

Technical Field

[0001] This application relates to the field of medical tools, and more specifically, to a skin preparation knife. Background Technology

[0002] Preoperative skin cleaning is a cleaning procedure for patients before surgery and an important part of the surgical preparation process. Without damaging the integrity of the skin, skin cleaning can remove transient bacteria, reduce resident bacteria, lower the skin microbial load, and reduce the risk of SSI caused by introducing skin colonizing bacteria into the surgical site during the surgical incision.

[0003] Currently, removing human hair from the surgical area has become an important step in the skin cleansing process. The tool used is usually a shaving razor, which is different from a regular razor. Because some human hair is thick and even curly due to long-term neglect, a regular razor cannot remove it. In addition, using a razor can easily cause scratches to the skin, thereby aggravating bacterial infection. Therefore, the hair is not completely removed from the root during shaving; usually, a 0.5mm stubble is left. This not only removes most of the transient bacteria but also does not damage the skin and does not affect the procedure.

[0004] However, the commonly used prep razors also have certain drawbacks. The only difference between current prep razors and ordinary razors is that they have comb teeth on the razor head. The comb teeth are used to comb the thick and curly hair before the blades shave it off. Because of the comb teeth, the hair is not completely cleaned from the root. However, in actual use, if the medical staff's cleaning movements are too small, it is impossible to comb the hair at all. If the combing movements are too large, the blade edge is aligned with the direction of the comb teeth, which can easily scratch the skin and cause preoperative infection.

[0005] Therefore, it is necessary to improve the existing skin preparation knife to overcome the above-mentioned defects. Utility Model Content

[0006] The main purpose of this application is to provide a skin preparation knife, which, by setting an arc-shaped cutting groove, has the blade edge set inside the arc-shaped cutting groove, changing the original scraping into rotary cutting, which is not only convenient to clean but also will not scratch the human skin.

[0007] To achieve the above objectives, in a first aspect, this application provides a skin preparation knife, including a handle and a blade assembly fixedly disposed on the handle. The blade assembly includes a blade holder and a blade fixedly connected to the blade holder. The blade holder has a plurality of comb grooves, and one side of the bottom of each comb groove extends inward to form an arc-shaped cutting groove. The blade includes a blade body, and the blade body has teeth that correspond one-to-one with the comb grooves. The cutting edge of the teeth cooperates with the arc-shaped cutting groove.

[0008] A further improvement is that each of the comb grooves has a stop bar at its edge, the height of which is greater than the thickness of the blade.

[0009] A further improvement is that a limiting groove is formed on the inner side of the stop bar, and the end of the blade tooth is inserted into the limiting groove.

[0010] A further improvement is that the tool holder and the tool head holder are integrally formed.

[0011] A further improvement is that the handle and the blade holder are integrally molded from medical-grade plastic.

[0012] A further improvement is that the cutter head holder is detachably connected to the blade.

[0013] A further improvement is that the top of the cutter head holder is provided with a mounting groove, the blade is installed in the mounting groove, and the blade is fixedly connected to the cutter head holder by fasteners.

[0014] A further improvement is that the comb grooves are provided on both sides of the blade holder, and the blade teeth are provided on both sides of the blade.

[0015] The prep knife provided by this utility model has the following advantages compared with the prior art: by setting an extended arc-shaped cutting groove on one side of the comb groove, and placing the blade edge in the arc-shaped cutting groove, during combing, medical staff can comb according to the density and curliness of the hair without scratching the skin even with large movements. During combing, the hair gathers in the comb groove, and the medical staff rotates the prep knife, and the hair enters the arc-shaped cutting groove from one side of the comb groove, where the sharp blade cuts off the hair, thus making preoperative cleaning more convenient. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the utility model. Figure 1 (Handle and tip holder);

[0018] Figure 2 This is a schematic diagram of the utility model. Figure 2 (Equipped with blades);

[0019] Figure 3 yes Figure 1 Enlarged view of point A;

[0020] Figure 4 yes Figure 2 Enlarged view of point B;

[0021] Figure 5 This is a schematic diagram of the blade.

[0022] The components are: 1. handle, 2. headstock, 3. blade, 4. comb groove, 5. arc-shaped cutting groove, 6. blade body, 7. blade teeth, 8. blade edge, 9. limiting groove, 10. mounting groove, and 11. stop bar. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] In addition, the term "multiple" should mean two or more.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-5 As shown, a skin preparation knife includes a handle 1 and a blade assembly fixedly mounted on the handle 1. The blade assembly includes a blade holder 2 and a blade 3 fixedly connected to the blade holder 2. The blade holder 2 has a plurality of comb grooves 4. One side of the bottom of each comb groove 4 extends inward to form an arc-shaped cutting groove 5. The blade 3 includes a blade body 6. The blade body 6 has blade teeth 7 that correspond one-to-one with the comb grooves 4. The cutting edge 8 of the blade teeth 7 cooperates with the arc-shaped cutting groove 5.

[0030] Therefore, during preoperative cleaning, for patients with thick hair and curly hair due to long-term neglect, medical staff can directly comb the hair using the comb grooves 4. Multiple combings can be performed first. During the combing process, the hair gathered in the comb grooves 4 is then rotated by the medical staff to turn the hair into the arc-shaped cutting grooves 5. At the same time, the blades 8 set in the arc-shaped cutting grooves 5 cut the hair, forming a spiral cut. Since the direction of the blades 8 is not the same as that of the comb grooves 4, the skin will not be scratched during the combing process. Moreover, a small amount of hair inevitably enters the arc-shaped cutting grooves 5 during the combing process, and this part of the hair will also be cut off by the blades 8 during the combing process.

[0031] To prevent the blade 3 from scratching human skin during combing, each of the comb grooves 4 has a baffle 11 on its edge. The height of the baffle 11 is greater than the thickness of the blade 3. Although the blade 8 is deviated from the comb groove 4, the blade 3 is thin and usually made of steel. If the force is too great, it will still cause damage to human skin. Therefore, by setting the baffle 11, the above situation can be avoided, which helps to protect human skin from damage.

[0032] In order to enable the blade 3 to be better positioned, a limiting groove 9 is provided on the inner side of the stop bar, and the end of the blade tooth 7 is inserted into the limiting groove 9.

[0033] For ease of manufacturing, the handle 1 and the blade holder 2 are integrally formed from medical-grade plastic. Furthermore, to prevent cross-contamination, the blade holder 2 is detachably connected to the blade 3, allowing for replacement of the blade 3. Specifically, the top of the blade holder 2 has a mounting groove 10, in which the blade 3 is installed. The blade 3 is fixedly connected to the blade holder 2 using fasteners, making installation and disassembly convenient.

[0034] To enable hair removal from both sides and make operation more convenient, the comb grooves 4 are provided on both sides of the blade holder 2, and the blade teeth 7 are provided on both sides of the blade 3.

[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A leather preparation knife, comprising a handle and a blade assembly fixedly disposed on the handle, characterized in that, The cutter head assembly includes a cutter head holder and a blade fixedly connected to the cutter head holder. The cutter head holder has a plurality of comb grooves, and one side of the bottom of each comb groove extends inward to form an arc-shaped cutting groove. The blade includes a blade body, and the blade body has cutting teeth that correspond one-to-one with the comb grooves. The cutting edge of the cutting teeth cooperates with the arc-shaped cutting groove.

2. The skin preparation knife as described in claim 1, characterized in that: Each of the comb grooves has a stop bar at its edge, the height of which is greater than the thickness of the blade.

3. The skin preparation knife as described in claim 2, characterized in that: A limiting groove is provided on the inner side of the stop bar, and the end of the blade tooth is inserted into the limiting groove.

4. The skin preparation knife as described in claim 1, characterized in that: The handle and the headstock are integrally formed.

5. A skin preparation knife as described in claim 4, characterized in that: The handle and the blade holder are integrally molded from medical plastic.

6. A skin preparation knife as described in claim 1, characterized in that: The cutter head holder is detachably connected to the blade.

7. A skin preparation knife as described in claim 6, characterized in that: The top of the cutter head holder has a mounting groove, the blade is installed in the mounting groove, and the blade is fixedly connected to the cutter head holder by fasteners.

8. A skin preparation knife as described in claim 1, characterized in that: The comb grooves are provided on both sides of the blade holder, and the blade teeth are provided on both sides of the blade.

Images