Scraping knife for cyst surgery

Abstract

The utility model discloses a cyst surgery scraping knife which comprises a knife handle and a knife edge, one end of the knife handle is provided with an installation notch, two opposite faces in the installation notch are provided with rotating holes, rotating shafts are embedded in the rotating holes, a rotating frame is sleeved on the rotating shafts, the knife edge is detachably installed on the rotating frame, and the rotating frame rotates relative to the knife handle through the rotating shafts. Wherein the cutting edge is made of low-oxygen titanium and has remarkable fracture toughness, light weight, corrosion resistance and biocompatibility, when the cutting edge is assembled on the knife handle, the cutting edge is firstly installed on the rotating frame, and the cutting edge is correspondingly driven to rotate by a certain angle through rotating connection of the rotating frame and the knife handle; due to the fact that the knife edge and the knife handle are assembled in a clamping and embedding mode, the knife handle is assembled with the knife edges of different shapes so as to meet operation requirements of different conditions, different operation requirements in an operation can be met through the characteristics that the knife edge is replaceable and rotatable, and practicability and use flexibility of products are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical tool technical field especially, relates to a cyst operation curettage knife. BACKGROUND

[0002] The jaw cyst is a kind of common benign disease, mainly forms on the jaw of human body, after the size development of cyst to certain degree, cyst is scraped off in time, to prevent cyst pathological change or cause other diseases to cause life danger to human body.

[0003] At present, in the jaw cyst curettage open operation, cyst is scraped off usually by using specific surgical instrument, and the commonly used surgical instrument is curet at present, and the feature of curet is that head is various in shape, is suitable for various cysts to adapt different operation needs, but the cutting edge of the curettage knife in the prior art cannot rotate, when scraping off part position more tricky cyst, the scraping difficulty is greater, under the condition that the force is not careful, cyst is scraped easily, causes the operation risk such as implantation transfer, and in the operation of skull base mass, its operation difficulty is determined by multiple factors including the size of mass, position, the relationship of important structure around mass and the overall health condition of patient, and the anatomical structure in skull base area is complex, important brain nerves and venous vessels are designed, and tumor exposure is difficult, leading to high operation risk, when scraping some smaller, adhesion tighter cyst, curet can not separate cyst wall due to over-thickness, breakage is caused;Therefore, a cyst operation curettage knife with reasonable structure is needed to solve the above technical problems. SUMMARY

[0004] In view of the above-mentioned technical problems that the head of the curet is relatively hard and cannot rotate, the utility model provides a cyst operation curettage knife.

[0005] To achieve the above object, the utility model provides a cyst operation curettage knife, including handle and cutting edge, one end of handle is equipped with installation gap, opposite two sides in installation gap are provided with rotating hole, rotating shaft is embedded in rotating hole, rotating shaft is equipped with rotating frame, cutting edge is detachably installed on rotating frame, cutting edge rotates relative to handle through rotating frame;

[0006] Among them, the cutting edge is made of low-oxygen titanium.

[0007] As an improved scheme of the utility model, one side of the rotating frame is formed with a mounting protrusion, and the cutting edge is formed with a mounting slot opening matched with the mounting protrusion, and the cutting edge is embedded on the mounting protrusion through the mounting slot opening.

[0008] As an improved scheme of the utility model, the distance between the two sides of the cutting edge continuously approaches in the direction of the handle towards the cutting edge.

[0009] As an improved scheme of the utility model, the thickness of the blade continuously decreases along the handle towards the blade.

[0010] As an improved scheme of the utility model, the handle is further provided with anti-skid lines.

[0011] As an improved scheme of the utility model, the edges on both sides of the blade are rounded.

[0012] The utility model discloses the beneficial effect is: compared with the prior art, the utility model provides a kind of cyst surgical curettage knife, the one end of the handle is equipped with installation gap, the opposite two sides in installation gap are provided with rotating hole, rotating hole is embedded with rotating shaft, rotating shaft is equipped with rotating frame, blade is detachably installed on rotating frame, and blade is rotated relative to handle by rotating frame;The blade of the utility model is assembled on the handle, first, blade is installed to rotating frame, and the rotation of rotating frame and handle is correspondingly driven blade to rotate by a certain angle, and because the assembly mode of blade and handle is carded into the embedded type, therefore, the blade of different shapes is assembled to handle to make the surgical requirement of different situations, by the characteristics of replaceable and rotatable blade, different surgical requirements in surgery can be met, the practicability and use flexibility of product are improved;Blade is made of low-oxygen titanium, has significant fracture toughness, lightweight, corrosion resistance and biocompatibility, can be bent and deformed within a certain limit, has strong ductility, is suitable for removing cyst wall completely, and its superior lightweight and corrosion resistance are extremely suitable for being used as surgical tool;Its lightweight can provide the convenience and persistence of operation for doctor in long-time surgery, reduces the burden in long-time surgical process;And its corrosion resistance and biocompatibility meet the preferred material of long-term implantation medical equipment in human body, meet the stringent requirements of surgical knife material. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the assembly drawing of the utility model;

[0014] Figure 2 It is the perspective view of the utility model;

[0015] Figure 3 It is the first schematic view of the blade bending of the utility model;

[0016] Figure 4 It is the second schematic view of the blade bending of the utility model;

[0017] Figure 5 It is the rotating angle schematic view of the blade of the utility model.

[0018] The main element symbol is explained as follows:

[0019] 1, knife handle; 2, rotating frame; 3, knife edge; 4, installation gap; 5, rotating shaft; 6, rotating hole; 7, installation protrusion; 8, installation notch. DETAILED DESCRIPTION

[0020] In order to more clearly express the utility model, the utility model is further described below in combination with the drawings.

[0021] In the following description, the example details are given in order to provide a more in-depth understanding of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. It should be understood that the described specific embodiments are only used to explain the utility model, and are not used to limit the utility model.

[0022] It should be understood that when the terms "contain" and / or "include" are used in the specification, it indicates the presence of the described features, whole, steps, operations, elements or components, but does not exclude the presence or addition of one or more other features, whole, steps, operations, elements, components or their combinations.

[0023] In the prior art, the scalpel blade 3 for scraping cyst cannot rotate, and when scraping part of the cyst is relatively tricky, the scraping difficulty is large, and in the case of careless force control, the cyst is easily scraped, causing the risk of implantation transfer and other operations, so there is an urgent need for a cyst surgical scraping knife with reasonable structure to solve the above technical problems.

[0024] Please refer to Figure 1 The utility model of a cyst surgical scraping knife, one end of the knife handle 1 is provided with an installation gap 4, opposite two surfaces in the installation gap 4 are provided with rotating holes 6, the rotating shaft 5 is embedded in the rotating hole 6, the rotating shaft 5 is provided with a rotating frame 2, the knife edge 3 is detachably installed on the rotating frame 2, and the knife edge 3 rotates relative to the knife handle 1 through the rotating frame 2;When the knife edge 3 of the utility model is assembled and fixed on the knife handle 1, the knife edge 3 is detachably arranged on the rotating frame 2, since the rotating frame 2 is embedded with the rotating shaft 5 on the knife handle 1 through the rotating hole 6, the knife edge 3 can rotate by a certain angle relative to the knife handle 1 through the rotating frame 2, and since the knife edge 3 and the knife handle 1 are detachably assembled, the knife handle 1 can also be assembled with different shapes and sizes of the knife edge 3 to meet the surgical requirements of different situations, through the replaceable and rotatable characteristics of the knife edge 3, different surgical requirements in the operation can be met, and the practicability and use flexibility of the product are improved.

[0025] The blade 3 of the product is made of low-oxygen titanium, has significant fracture toughness, light weight, corrosion resistance and biocompatibility, and the oxygen content is precisely controlled at 0.02 wt%, which realizes significant improvement of fracture toughness, and the mode I fracture toughness is about 255 MPa m^(1 / 2), and the crack initiation toughness based on J-integral reaches about 537 kJ / m^2. In addition, the uniform elongation of LO-Ti is more than 35%, and the density is about 4.43 g / cm^3, which is about 40% lighter than traditional steel, please refer to Figure 3 The blade 3 made of low-oxygen titanium can be bent and deformed within a certain limit, has strong ductility, is suitable for completely removing the cyst wall, and has excellent light weight and corrosion resistance, and is extremely suitable for being used as a surgical tool; the light weight can provide convenience and persistence for the doctor during long-time operation, and reduces the burden during long-time operation; and the corrosion resistance and biocompatibility meet the preferred material of the medical device implanted in the human body for a long time, and meet the strict requirements of the surgical knife material.

[0026] The working principle of the utility model is:

[0027] When assembling the blade 3 and the handle 1, first, the installation slot 8 of the blade 3 is aligned with the installation protrusion 7 on the rotating frame 2 and is embedded and fixed with the installation protrusion 7, so that the blade 3 and the handle 1 are assembled, and when disassembling, the blade 3 is pulled out, and because the rotating frame 2 and the handle 1 are rotated through the cooperation of the rotating shaft 5 and the rotating hole 6, the blade 3 can be adjusted and rotated at a certain angle relative to the handle 1.

[0028] In the embodiment, one side of the rotating frame 5 is formed with the installation protrusion 7, the blade 3 is formed with the installation slot 8 matched with the installation protrusion 7, the blade is embedded on the installation protrusion 7 through the installation slot 8, and the blade 3 can be assembled on the rotating frame 2 through the embedded connection of the installation slot 8 and the installation protrusion 7, the blade 3 can be matched and arranged as a plurality of different lengths but the same shape or the same length but different shapes, for example, 2, 4, 6, 8 mm, etc., to form a set of tools, so as to adapt to cysts of different sizes, shapes and positions, and improve the practical flexibility of the surgical knife.

[0029] In order to prevent the blade 3 from cutting the cyst when scraping the cyst, the distance between the two sides of the blade 3 is continuously close to the handle 1 towards the blade 3, the thickness of the blade 3 is continuously reduced from the handle 1 towards the blade 3, the edges of the two sides of the blade 3 are rounded, the edges of the blade 3 are configured as round and blunt, and the blade has a certain arc, so that the cyst can be completely scraped during scraping, and the risk of infection, implantation and transfer of the patient during operation is reduced.

[0030] In the embodiment, the shank 1 is further provided with anti-skid lines, which effectively increase the contact area and friction force between the hand and the shank 1, so that the holder is not easy to drop, and the stability of holding is improved.

[0031] The utility model has the advantages of:

[0032] 1. The blade of the product can rotate at a certain angle relative to the shank, and the shank can be embedded with blades of different shapes and lengths, improving the practicality and flexibility of the product, and being able to cope with different surgical needs in the process of cyst scraping surgery, and being suitable for cysts of different sizes, positions and types.

[0033] 2. The blade of the product is made of low-oxygen titanium, has good durability and softness, meets the material standard for long-term contact with the human body, can be bent and deformed within a certain limit, and the product is light in weight, reducing the burden on doctors during long-term surgery and providing convenience for operation.

[0034] The above disclosure is only a few specific embodiments of the utility model, but the utility model is not limited to this, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the utility model.

Claims

1. A cyst surgical curet, comprising a handle and a blade, characterized in that, One end of the knife handle is provided with a mounting gap, opposite two surfaces in the mounting gap are provided with rotating holes, rotating shafts are embedded in the rotating holes, rotating frames are sleeved on the rotating shafts, the knife edge is detachably mounted on the rotating frame, and the knife edge rotates relative to the knife handle through the rotating frame. The knife edge is made of low-oxygen titanium.

2. The cystoscopic curet of claim 1, wherein: One side of the rotating frame is formed with a mounting protrusion, the knife edge is formed with a mounting notch matched with the mounting protrusion, and the knife edge is embedded on the mounting protrusion through the mounting notch.

3. The cystoscopic curet of claim 1, wherein: The knife handle is also provided with anti-skid lines.

4. The cystoscopic curet of claim 1, wherein: The distance between the two sides of the knife edge continuously approaches in the direction of the knife handle towards the knife edge.

5. The cystoscopic curet of claim 1, wherein: The thickness of the knife edge continuously decreases in the direction of the knife handle towards the knife edge.

6. The cyst operation curet according to claim 1, wherein The edges of the two sides of the knife edge are round corners.

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