Safety scalpel

Abstract

The embodiment of the utility model provides a safety scalpel. The safety scalpel comprises a shell, a blade, a push handle and an elastic component. The shell is provided with a cavity and a telescopic opening communicated with the shell, the blade is arranged in the cavity in a sliding mode, the push handle is arranged on the shell in a sliding mode, and the push handle is connected with the blade. The elastic part is arranged in the cavity and connected to the shell and the push handle. Under the action of external force, the push handle can move along the shell to drive the blade to extend out of the shell from the telescopic opening, and the deformation quantity of the elastic component is increased. Under the state that the external force is removed, the elastic part recovers deformation and drives the push handle and the blade to move reversely, so that the blade completely retracts into the cavity. According to the safe scalpel, it can be guaranteed that the blade is completely contracted in the cavity of the shell when the scalpel is not used only through few active operation steps, and it is guaranteed that the blade is completely covered with the protection device and cannot fall off to the maximum extent when the scalpel is not used; and the condition that the sharp instrument is damaged after being used is prevented to the greatest extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a safe scalpel. BACKGROUND

[0002] The scalpel is an essential tool for surgical operation, and its safety is crucial for the operating surgeon and the patient. The traditional scalpel usually has two types: one is a plastic handle scalpel, and the other is a steel handle scalpel. The plastic handle scalpel is mainly composed of a disposable blade and a disposable plastic handle, and the front of the plastic handle is provided with a blade seat, and the blade is installed on the blade seat. The steel handle scalpel is mainly composed of a disposable blade and a non-disposable steel handle, and the blade needs to be installed on the handle before use and removed from the handle after use. Whether it is a plastic handle scalpel or a steel handle scalpel, the user suffers from potential harm from exposed blades or contamination caused by blood on the blade, and the surgeon is also prone to sharp instrument injuries when passing the exposed scalpel to colleagues.

[0003] In order to improve safety, the current surgical scalpel is designed under the concept of carrying a protective sleeve. For example, a patent for a disposable safe self-destructive scalpel is provided in the related art, which can meet the requirement that the scalpel can be stored in the protective sleeve, and the scalpel can be fixed in the "use state" and the "standby state" or an additional "scrap state" through a clamping position. However, this requires the doctor and the nurse to pay attention to the current state of the scalpel to ensure that the scalpel is in the corresponding use state under the current use environment, and the scalpel needs to be specially operated after use to switch to the "standby state" or the "scrap state". If the operation is forgotten, the problem of sharp instrument injuries may occur. The use process is complex and the operation is cumbersome.

[0004] Therefore, the present application is proposed. CONTENT OF THE UTILITY MODEL

[0005] In order to solve one of the above technical defects, the present application provides a safe scalpel to solve the problems in the prior art.

[0006] The utility model discloses the following technical scheme:

[0007] The purpose of the present application is to provide a safe scalpel, which comprises:

[0008] The shell has a cavity and a telescopic opening communicating with the shell;

[0009] The blade is slidably arranged in the cavity;

[0010] The push handle is slidably arranged in the shell, and the push handle is connected with the blade;

[0011] An elastic component is disposed within the cavity and is connected to both the housing and the push handle.

[0012] Under the action of external force, the push handle can move along the housing, causing the blade to extend out of the housing from the telescopic port, and the deformation of the elastic component increases;

[0013] When the external force is removed, the elastic component recovers its deformation, causing the push handle and the blade to move in the opposite direction, so that the blade is completely retracted into the cavity.

[0014] Optionally, the housing has a groove that communicates with the cavity;

[0015] The push handle has an inner body and an outer body;

[0016] The inner body is located in the cavity, and the outer body is located outside the housing;

[0017] The inner body is connected to the outer body;

[0018] The inner body is connected to the blade, and the inner body is also connected to the elastic member.

[0019] Optionally, the internal body includes protrusions;

[0020] The blade has a through groove, and the protrusion passes through the through groove;

[0021] The movement of the internal body is driven by the protrusion, which in turn moves the blade.

[0022] Optionally, the inner body has a bonding plate, and the protrusion is disposed on one side of the bonding plate along the thickness direction;

[0023] With the blade connected to the inner body, the blade is attached to the bonding plate.

[0024] Optionally, the protrusion is provided with a hanging groove;

[0025] One end of the elastic component is attached to the hanging groove.

[0026] Optionally, the hanging groove extends from the telescopic opening to the elastic member;

[0027] Furthermore, in the direction from the telescopic opening to the elastic component, the hanging groove gradually approaches the bonding plate.

[0028] Optionally, the inner wall of the housing is provided with two protruding ribs at intervals;

[0029] Both ribs extend along the direction of the blade's movement;

[0030] The blade is respectively attached to and supported on the corresponding ribs on both sides along the width direction;

[0031] The rib is located on the side of the blade away from the bonding plate.

[0032] Optionally, the housing includes a first housing and a second housing;

[0033] The first housing has the telescopic opening and a portion of the sliding groove;

[0034] The second housing has the aforementioned portion of the groove;

[0035] The first housing and the second housing are detachably connected, and the first housing and the second housing enclose the cavity and the complete groove.

[0036] Optionally, a limiting shaft is provided on the inner side of the second housing;

[0037] The end of the elastic component is connected to the limiting shaft.

[0038] Optionally, the first housing has a tab portion;

[0039] The second housing has an avoidance notch;

[0040] The edge of the protruding part is provided with a locking protrusion, and the second housing is provided with a recessed part at the edge of the clearance notch. The extending direction of the locking protrusion is perpendicular to the extending direction of the protruding part.

[0041] With the first housing and the second housing connected, the protrusion is inserted into the clearance notch, and the snap-fit ​​is engaged with the recess.

[0042] By adopting the above technical solution, this application has the following beneficial effects:

[0043] This safety scalpel, while offering the advantages of safety, ease of use, and reliability, requires minimal active operation during use, making it extremely simple to use and operate. When not in use, the handle is pulled by the elastic component, keeping the blade fully retracted within the cavity, ensuring safety during transportation, storage, and preparation for use. During use, the user holds the casing and presses the handle towards the retractable opening with their fingers. The handle slides towards the retractable opening, increasing the deformation of the elastic component and causing the blade to extend from the casing, allowing for normal operation. After use, simply releasing the fingers from the handle, without any further operation, allows the elastic component to return to its original shape, moving the handle and blade away from the retractable opening, causing the blade to fully retract into the cavity.

[0044] The safety scalpel of this application requires only a few active operating steps to ensure that the blade is completely retracted within the cavity of the casing when not in use. This maximizes the protection that the blade will not come out when not in use, and also minimizes the risk of sharps injury after use, thus protecting the lives of medical personnel. Attached Figure Description

[0045] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0046] Figure 1 This is a three-dimensional structural diagram showing the safety scalpel blade provided in this application when it is not extended, viewed from a top angle.

[0047] Figure 2 This is a three-dimensional structural diagram showing the safety scalpel blade provided in the embodiment of this application when it is extended, viewed from above.

[0048] Figure 3 A three-dimensional structural diagram showing the extended blade of the safety scalpel provided in this application embodiment is shown from a downward angle.

[0049] Figure 4 This is a top-view exploded structural diagram of the safety scalpel provided in an embodiment of this application;

[0050] Figure 5 This is a schematic diagram of the exploded structure of a safety scalpel provided in an embodiment of this application, viewed from below.

[0051] Figure 6 This diagram shows a cross-sectional view of the safety scalpel blade provided in this application when it is not extended, in a first direction.

[0052] Figure 7 This diagram shows a cross-sectional view of the safety scalpel blade provided in this application when it is extended in a first direction.

[0053] Figure 8 This diagram shows a cross-sectional view of the safety scalpel blade provided in this application when it is not extended, in a second direction.

[0054] Figure 9 This diagram shows a cross-sectional view of the safety scalpel blade in a second direction when it is extended, according to an embodiment of this application.

[0055] Figure 10 This is a three-dimensional structural diagram of the first housing of the safety scalpel provided in an embodiment of this application, viewed from below.

[0056] Figure 11 This is a three-dimensional structural diagram of the second housing of the safety scalpel provided in an embodiment of this application, viewed from below.

[0057] Figure 12 This is a three-dimensional structural diagram of the push handle of the safety scalpel provided in the embodiment of this application, viewed from below.

[0058] In the figure: housing 1, first housing 11, protruding part 111, locking protrusion 1111, telescopic opening 112, protruding rib 113, second housing 12, avoidance notch 122, recessed part 1221, sliding groove 101, limiting shaft 104, blade 2, through groove 21, push handle 3, inner body 31, protrusion 311, hanging groove 3111, bonding plate 312, outer body 32, friction rib 321, elastic component 4, hook 41, hanging ring 42. Detailed Implementation

[0059] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0060] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are 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 of this application.

[0061] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0062] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] like Figures 1 to 12 As shown in the illustration, this application provides a safety scalpel, including a housing 1, a blade 2, a push handle 3, and an elastic component 4. The housing 1 has a cavity and a telescopic opening 112 communicating with the housing 1. The blade 2 is slidably disposed in the cavity, and the push handle 3 is slidably disposed in the housing 1, connected to the blade 2. The elastic component 4 is disposed within the cavity and is connected to both the housing 1 and the push handle 3. Under external force, the push handle 3 moves along the housing 1, causing the blade 2 to extend out of the housing 1 from the telescopic opening 112, increasing the deformation of the elastic component 4. When the external force is removed, the elastic component 4 returns to its original deformation, causing the push handle 3 and the blade 2 to move in opposite directions, so that the blade 2 is completely retracted into the cavity.

[0064] This safety scalpel, while offering the advantages of safety, ease of use, and reliability, requires minimal active operation during use, making it extremely simple to use and operate. When not in use, the push handle 3 is pulled by the elastic component 4, causing the blade 2 to be fully retracted within the cavity, ensuring safety during transportation, storage, and preparation for use. During use, the user holds the housing 1 and presses the push handle 3 towards the telescopic opening 112, causing the push handle 3 to slide towards the telescopic opening 112. This increases the deformation of the elastic component 4, pulling the blade 2 out of the housing 1, allowing for normal operation. After use, simply releasing the finger from the push handle 3, without any further operation, allows the elastic component 4 to return to its original shape, moving the push handle 3 and blade 2 away from the telescopic opening 112, causing the blade 2 to fully retract into the cavity.

[0065] The safety scalpel of this application requires only a few active operating steps to ensure that the blade 2 is completely retracted into the cavity of the housing 1 when the scalpel is not in use. This ensures that the blade 2 is completely covered by the protective device and will not fall out when not in use, and also minimizes the possibility of sharp instrument injury after use, thus protecting the lives of medical personnel.

[0066] In some possible implementations, the housing 1 has a groove 101 communicating with the cavity. The push handle 3 has an inner body 31 and an outer body 32, the inner body 31 being located in the cavity and the outer body 32 being located outside the housing 1. The inner body 31 is connected to the outer body 32, the inner body 31 is connected to the blade 2, and the inner body 31 is connected to the elastic member 4. The outer body 32 protrudes outside the housing 1 to facilitate full contact with it when the finger applies force, while the inner body 31 is located inside the cavity and connected to the blade 2, ensuring that the blade 2 can extend out of the housing 1 with the push handle 3.

[0067] In some possible implementations, the outer body 32 is provided with friction ribs 321, which can increase the friction between the finger and the push handle 3. When the finger pushes the push handle 3, it can ensure that the finger and the push handle 3 are in a stable position, and the blade 2 is in a stable position, so that the scalpel is more stable when used.

[0068] In some possible implementations, the inner body 31 includes a protrusion 311, and the blade 2 has a through groove 21 through which the protrusion 311 passes. Movement of the inner body 31 is achieved by the protrusion 311, which in turn moves the blade 2. The protrusion 311 is located within the through groove 21, and when the push handle 3 moves, it abuts against the wall of the through groove 21, causing the blade 2 to move synchronously. The engagement of the protrusion 311 and the through groove 21 ensures that the push handle 3 will not fail to apply force to the blade 2.

[0069] Furthermore, the protrusion 311 is shaped to match the through groove 21, reducing the space between the blade 2 and the push handle 3, ensuring more precise movement of the blade 2 and better control. The through groove 21 is a strip-shaped groove that extends along the sliding direction of the push handle 3, with curved transition edges at both ends along its length. This shape facilitates nested installation and minimizes relative wobbling.

[0070] In some possible implementations, the inner body 31 has a bonding plate 312, and the protrusion 311 is disposed on one side of the bonding plate 312 along the thickness direction. When the blade 2 is connected to the inner body 31, the blade 2 is bonded to the bonding plate 312. The bonding plate 312 increases the contact area between the push handle 3 and the blade 2, providing support for the blade 2 and contributing to its stability. The bonding plate 312 is also bonded to the inner wall of the housing 1, making the push handle 3 less prone to wobbling, further contributing to the stability of the blade 2.

[0071] The elastic component 4 can be a spring, rubber block, rubber band, or other structure with good elastic deformation recovery capability. Considering durability and stability, the elastic component 4 is preferably a spring. The spring can be a compression spring or a tension spring. Tests have shown that tension springs offer better feel, performance, and rebound. Therefore, the most preferred option is a tension spring for the elastic component 4.

[0072] In some possible implementations, a hanging groove 3111 is provided on the protrusion 311, and one end of the elastic member 4 is hooked into the hanging groove 3111. A hook 41 is provided on one side of the elastic member 4, and the hook 41 is embedded in the hanging groove 3111. The hanging groove 3111 limits the hook 41, which can prevent the hook 41 from disengaging from the push handle 3 to the greatest extent and improve the stability of use.

[0073] Furthermore, the blade 2 is positioned between the bonding plate 312 and the hanging groove 3111. After the elastic component 4 is attached to the hanging groove 3111, the elastic component 4 will also apply a clamping force to the blade 2, further improving the stability of the blade 2 and making the blade 2 almost free from wobbling along the height direction of the protrusion 311.

[0074] In some possible implementations, the hanging groove 3111 extends from the telescopic opening 112 to the elastic member 4, and in this direction, the hanging groove 3111 gradually approaches the bonding plate 312. This directional extension of the hanging groove 3111 has several advantages: firstly, it prevents the hook 41 of the elastic member 4 from easily detaching from the hanging groove 3111; secondly, it positions the elastic member 4 closer to the middle of the thickness of the push handle 3, causing the force exerted by the elastic member 4 on the push handle 3 to be more concentrated along the sliding direction of the push handle 3, reducing forces in other directions and making the force application smoother. Furthermore, this arrangement causes the elastic member 4 to press more firmly against the blade 2, ensuring the blade 2 adheres tightly to the bonding plate 312, further improving the stability of the blade 2 and preventing it from wobbling along the height direction of the protrusion 311.

[0075] In some possible implementations, the inner wall of the housing 1 is provided with two ribs 113 spaced apart, both ribs 113 extending along the direction of movement of the blade 2. The blade 2 is supported on its respective sides along its width direction by the corresponding ribs 113, with the ribs 113 located on the side of the blade 2 facing away from the bonding plate 312. The two ribs 113 prevent the blade 2 from wobbling in the width direction, further improving the stability of the blade 2 during use. Furthermore, the two ribs 113 limit the movement of the blade 2, eliminating the need for the blade 2 to adhere to the inner wall of the housing 1, reducing friction and improving the user experience.

[0076] In some possible implementations, the housing 1 includes a first housing 11 and a second housing 12. The first housing 11 has the telescopic opening 112 and a portion of the slide groove 101, and the second housing 12 has the portion of the slide groove 101. The first housing 11 and the second housing 12 are detachably connected, and the first housing 11 and the second housing 12 enclose the cavity and the complete slide groove 101. The housing 1 is configured as two detachably connected parts, which facilitates the assembly of the blade 2 push handle 3 and the elastic component 4. The surgical blade 2 is not reusable, but depending on the usage environment, the housing 1 can be discarded once after sterilization or reused, depending on the requirements for discarding the housing 1.

[0077] In some possible implementations, a limiting shaft 104 is provided inside the second housing 12, and the end of the elastic member 4 is connected to the limiting shaft 104. A hanging ring 42 is provided on the side of the elastic member 4 away from the hook 41, and the hanging ring 42 is hung on the limiting post to ensure the stable connection of the elastic member 4.

[0078] In some possible embodiments, the first housing 11 has a protruding portion 111, and the second housing 12 has a clearance notch 122. A latching protrusion 1111 is provided along the edge of the protruding portion 111, and a recess 1221 is provided along the edge of the clearance notch 122 in the second housing 12. The extending direction of the latching protrusion 1111 is perpendicular to the extending direction of the protruding portion 111. When the first housing 11 and the second housing 12 are connected, the protruding portion 111 is inserted into the clearance notch 122, and the latching protrusion 1111 is engaged with the recess 1221. The extending direction of the latching protrusion 1111 is perpendicular to the insertion direction of the first housing 11 and the second housing 12.

[0079] The engagement of the protrusion 1111 and the recess 1221 ensures that the relative positions of the first housing 11 and the second housing 12 are not easily changed when there is no large pulling force, thus ensuring the stable insertion of the first housing 11 and the second housing 12.

[0080] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0081] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0082] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A safety scalpel, characterized in that, include: A housing having a cavity and a telescopic opening communicating with the housing; A blade, which is slidably disposed in the cavity; A push handle, which is slidably disposed in the housing, and the push handle is connected to the blade; An elastic component is disposed within the cavity and is connected to both the housing and the push handle. Under the action of external force, the push handle can move along the housing, causing the blade to extend out of the housing from the telescopic port, and the deformation of the elastic component increases; When the external force is removed, the elastic component recovers its deformation, causing the push handle and the blade to move in the opposite direction, so that the blade is completely retracted into the cavity.

2. The safety scalpel according to claim 1, characterized in that, The housing has a groove that communicates with the cavity; The push handle has an inner body and an outer body; The inner body is located in the cavity, and the outer body is located outside the housing; The inner body is connected to the outer body; The inner body is connected to the blade, and the inner body is also connected to the elastic member.

3. The safety scalpel according to claim 2, characterized in that, The internal body includes protrusions; The blade has a through groove, and the protrusion passes through the through groove; The movement of the internal body is driven by the protrusion, which in turn moves the blade.

4. The safety scalpel according to claim 3, characterized in that, The inner body has a bonding plate, and the protrusion is disposed on one side of the bonding plate along the thickness direction; With the blade connected to the inner body, the blade is attached to the bonding plate.

5. The safety scalpel according to claim 4, characterized in that, The protrusion is provided with a hanging groove; One end of the elastic component is attached to the hanging groove.

6. The safety scalpel according to claim 5, characterized in that, The hanging groove extends from the telescopic opening to the elastic component; Furthermore, in the direction from the telescopic opening to the elastic component, the hanging groove gradually approaches the bonding plate.

7. The safety scalpel according to claim 4, characterized in that, The inner wall of the shell is provided with two protruding ribs at intervals; Both ribs extend along the direction of the blade's movement; The blade is respectively attached to and supported on the corresponding ribs on both sides along the width direction; The rib is located on the side of the blade away from the bonding plate.

8. The safety scalpel according to any one of claims 2-7, characterized in that, The housing includes a first housing and a second housing; The first housing has the telescopic opening and a portion of the sliding groove; The second housing has the aforementioned portion of the groove; The first housing and the second housing are detachably connected, and the first housing and the second housing enclose the cavity and the complete groove.

9. The safety scalpel according to claim 8, characterized in that, A limiting shaft is provided on the inner side of the second housing; The end of the elastic component is connected to the limiting shaft.

10. The safety scalpel according to claim 8, characterized in that, The first housing has a protruding tab portion; The second housing has an avoidance notch; The edge of the protruding part is provided with a locking protrusion, and the edge of the second housing located at the clearance notch is provided with a recessed part, and the extending direction of the locking protrusion is perpendicular to the extending direction of the protruding part. With the first housing and the second housing connected, the protrusion is inserted into the clearance notch, and the snap-fit ​​is engaged with the recess.

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