Drainage U-shaped paracentesis knife

Abstract

The utility model relates to the technical field of knife body design, in particular to a hydrophobic U-shaped puncture knife which comprises a knife body assembly and a protective cap which can be mutually combined and / or separated, one end of the knife body assembly protrudes outwards along the knife body assembly, the whole protective cap is of a cylindrical structure, one end of the cylindrical structure is provided with a semi-closed opening, and the protective cap comprises a limiting portion and a movable portion. According to the utility model, through the design of the holding part and the holding groove according with the biological structure, the hand holding is more comfortable and safer, the puncture operation is more stable, meanwhile, the holding groove can increase the palm contact area, and the handle is prevented from slipping during cutting.

Description

Technical Field

[0001] The utility model relates to the technical field of knife body design, in particular to a hydrophobic U-shaped puncture knife. Background Art

[0002] Existing puncture knives generally directly adopt a triangular-structured knife body, a cylindrical straight knife handle, etc., and corresponding external components are added according to different specific needs, so as to realize different functions through the puncture knife. This puncture knife has a traditional structure and has no design for the knife body itself. During specific use, the blade of the knife body is easy to loosen, which is inconvenient for personnel to operate and prone to operating errors. It is inconvenient to use and the stability during use cannot be guaranteed;

[0003] The Chinese patent with publication number CN219271309U discloses an anterior chamber puncture knife with a flushing sleeve, comprising a puncture knife handle, a flushing sleeve, and a puncture knife head. One end of the puncture knife handle is connected to one end of the puncture knife head, and the other end of the puncture knife head is a sharp spike. The flushing sleeve is sleeved on the puncture knife head and the spike at the other end of the puncture knife head is exposed. However, the patent mainly discloses the addition of an external flushing sleeve to realize the flushing operation in the puncture and cutting operations of the knife body, and does not disclose how to improve the stability of the knife body;

[0004] The Chinese patent with publication number CN215779111 U discloses an adjustable puncture knife for vitreous cutting, which drives the blade head and the needle body to extend and retract synchronously by a toggle rod, and cooperates with the movable clamping between the deflection rod and the telescopic sleeve rod to limit the blade head and the needle body after they are extended and retracted synchronously, so that the puncture knife can select needle bodies of different lengths according to the specific pathological conditions of the patient. However, the operation of the patent is too complicated and inconvenient to use, and the relevant content of stability in use is not mentioned;

[0005] In summary, how to develop a puncture knife that is easy to use and has high stability has become a problem to be solved. Utility Model Content

[0006] The utility model aims to provide a hydrophobic U-shaped puncture knife to solve the problem that the prior art is inconvenient to use and the stability during use cannot be guaranteed.

[0007] In order to achieve the above objectives, the following technical solutions are provided:

[0008] A hydrophobic U-shaped puncture knife, used for puncture and / or cutting operations, comprises: a knife body assembly and a protective cap which can be combined and / or separated with each other, one end of the knife body assembly is arranged to protrude outward along the knife body assembly, the protective cap as a whole is a columnar structure with a semi-closed opening at one end, the protective cap comprises a limiting part and a movable part, the limiting parts are arranged parallel to each other and side by side at the left and right ends of the protective cap, there are two movable parts, and both are semi-circular shell structures, the two movable parts are bent at one end away from the opening of the protective cap, and the bending parts of the two movable parts are buckled and closed with each other, the limiting parts are respectively embedded in the two movable parts, and the side walls thereof are arranged to fit the movable parts, at least a part of the knife body assembly can be limitedly arranged in the protective cap, and has the freedom to move along the opening direction of the protective cap.

[0009] Preferably, the limiting portion is also provided with a limiting protrusion along its inner wall protruding into the protective cap, and the extension direction of the limiting protrusion is perpendicular to the inner surface of the limiting portion. The limiting portion is also provided with a touch strip along its outer wall protruding out of the protective cap, and the touch strip extends from the limiting portion to the movable portion and fits with the outer surface of the protective cap, so as to separate the knife body assembly from the protective cap.

[0010] Preferably, the blade assembly includes a blade and a handle body, one end of the handle body protrudes outwardly and is provided with a connecting portion for connecting the blade and combining with a protective cap, the other end of the handle body is bent, and the blade is detachably connected to the connecting portion, and a side wall of the handle body is also provided with a gripping portion for holding the handle body.

[0011] Preferably, the end of the handle body with the connecting portion is a square column structure, and its side edges are rounded, and the other end of the handle body is bent toward the top of the handle body and extends toward the connecting portion, and then the end of the handle body without the connecting portion is bent to form a semi-closed structure for the hanging operation of the puncture knife.

[0012] Preferably, the holding portion is arranged correspondingly at the bottom of the handle body, and the holding portion is arranged to protrude outward in a stepped manner along a direction perpendicular to the bottom surface of the handle body. The two ends of the holding portion are in contact with the bottom surface of the handle body, and the holding portion is symmetrically protruded from the two ends to the middle thereof in sequence along a direction away from the handle body. The left and right side walls of the handle body are also respectively provided with a certain number of holding grooves with through openings at both ends, and the holding grooves are inclined toward one side of the connecting portion.

[0013] Preferably, when the blade body assembly and the protective cap are combined with each other, the left and right side walls of the connecting part are configured to abut against the limiting protrusions to limit the blade body assembly, and a certain gap is provided between the top and bottom ends of the connecting part and the movable part to separate the blade body assembly from the protective cap.

[0014] Preferably, a middle opening is provided in the connecting portion for connecting a blade, and a circular hole penetrating the blade is respectively provided at the front and rear ends of the blade, which are respectively used for balancing the blade and fixing it to the connecting portion, and the blade end is a crescent-shaped structure with edges sharpened on both sides, and the surface of the blade is coated with a hydrophobic coating.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model adopts the design of the holding part and the holding groove that conforms to the biological structure, which makes the hand holding more comfortable and safe, and the puncture operation more stable. At the same time, the holding groove can increase the contact area of ​​the palm to prevent the handle from slipping during cutting;

[0017] 2. The utility model prevents the adhesion of the blade through the hydrophobic coating design of the blade, and is more convenient for blade disinfection. The blade is a crescent-shaped double-edged extended structure, which has a smaller cutting wound surface and a larger effective incision area. At the same time, the blade has a balancing hole, and the cutting force is more stable;

[0018] 3. The utility model uses the limiting protrusions provided in the limiting part, so that the knife body assembly can be limited by the limiting protrusions and can also move through the gap between the limiting protrusions and the movable part, which is convenient for storing and taking out the knife body assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 The structure of the protective cap is shown in Figure 1. Figure 1 ;

[0021] Figure 3 The structure of the protective cap is shown in Figure 1. Figure 2 ;

[0022] Figure 4 is a schematic diagram of the structure of the blade;

[0023] Figure 5 Schematic diagram of the structure of the cutter body assembly without the blade Figure 1 ;

[0024] Figure 6 Schematic diagram of the structure of the cutter body assembly without the blade Figure 2 ;

[0025] In the figure: 10-blade assembly, 101-blade, 102-handle, 103-connecting portion, 104-holding portion, 105-holding groove, 106-circular hole;

[0026] 20 - protective cap, 201 - limiting portion, 202 - movable portion, 203 - limiting protrusion, 204 - touch bar. DETAILED DESCRIPTION

[0027] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions of the schematic diagrams in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-6 As shown, a hydrophobic U-shaped puncture knife is used for puncture and / or cutting operations, comprising: a knife body assembly 10 and a protective cap 20 which can be combined and / or separated with each other, one end of the knife body assembly 10 is protruding outward along the knife body assembly 10, the protective cap 20 is a columnar structure with a semi-closed opening at one end, the protective cap 20 comprises a limiting portion 201 and a movable portion 202, the limiting portions 201 are arranged parallel to each other at the left and right ends of the protective cap 20, there are two movable portions 202, and both are semi-circular shell structures, the two movable portions 202 are bent away from one end of the opening of the protective cap 20, and the bending parts of the two movable portions 202 are buckled and closed with each other, the limiting portions 201 are respectively embedded in the two movable portions 202, and the side walls thereof are fitted with the movable portions 202, at least a part of the knife body assembly 10 can be limitedly arranged in the protective cap 20, and has the freedom to move along the opening direction of the protective cap 20;

[0029] In some embodiments, the limiting portion 201 is further provided with a limiting protrusion 203 protruding from the inner side wall thereof toward the inside of the protective cap 20, and the extending direction of the limiting protrusion 203 is perpendicular to the inner surface of the limiting portion 201. The limiting portion 201 is further provided with a touch strip 204 protruding from the outer side wall thereof toward the outside of the protective cap 20, and the touch strip 204 is extended from the limiting portion 201 toward the movable portion 202, and is in contact with the outer surface of the protective cap 20, and is used to separate the blade assembly 10 from the protective cap 20;

[0030] In some embodiments, the blade assembly 10 includes a blade 101 and a handle 102. One end of the handle 102 is protruding outward and provided with a connecting portion 103 for connecting the blade 101 and combining with the protective cap 20. The other end of the handle 102 is bent and the blade 101 is detachably connected to the connecting portion 103. A side wall of the handle 102 is also provided with a gripping portion 104 for gripping the handle 102.

[0031] In some embodiments, one end of the handle body 102 having the connection portion 103 is a square column structure, and the side edges thereof are rounded, and the other end of the handle body 102 is bent toward the top side of the handle body 102 and extends toward the connection portion 103, and then the end of the handle body 102 not having the connection portion 103 is bent to form a semi-closed structure for the hanging operation of the puncture knife;

[0032] In some embodiments, the gripping portion 104 is correspondingly arranged at the bottom of the handle body 102, and the gripping portion 104 is stepped outwardly protruding in a direction perpendicular to the bottom surface of the handle body 102. The two ends of the gripping portion 104 are in contact with the bottom surface of the handle body 102, and the gripping portion 104 is symmetrically protruding from the two ends to the middle thereof in sequence in a direction away from the handle body 102. The left and right side walls of the handle body 102 are also respectively provided with a certain number of gripping grooves 105 with through openings at both ends, and the gripping grooves 105 are inclined toward one side of the connecting portion 103. Through the design of the gripping portion 104 and the gripping grooves 105 that conform to the biological structure, the hand grip is more comfortable and safe, and the puncture operation is more stable. At the same time, the gripping grooves 105 can increase the contact area of ​​the palm to prevent the handle 102 from slipping during cutting.

[0033] In some embodiments, when the blade assembly 10 and the protective cap 20 are combined with each other, the left and right side walls of the connecting portion 103 are configured to abut against the limiting protrusions 203, which are used to limit the blade assembly 10. A certain gap is provided between the top and bottom ends of the connecting portion 103 and the movable portion 202, which is used to separate the blade assembly 10 and the protective cap 20. Through the limiting protrusions 203 provided in the limiting portion 201, the blade assembly 10 can be limited by the limiting protrusions 203, and can also be moved through the gap between the limiting protrusions 203 and the movable portion 202, which is convenient for storing and taking out the blade assembly 10.

[0034] In some embodiments, a hole is provided in the middle of the connecting portion 103 for connecting the blade 101. A circular hole 106 penetrating the blade 101 is respectively provided at the front and rear ends of the blade 101, which are respectively used to balance the blade 101 and fix it to the connecting portion 103. The blade end of the blade 101 is a crescent-shaped structure with edges sharpened on both sides, and the surface of the blade 101 is coated with a hydrophobic coating. The hydrophobic coating design of the blade 101 prevents adhesion of the blade 101 and facilitates disinfection of the blade 101. The blade 101 is in the shape of a crescent-shaped double-edged elongated structure, with a smaller cutting wound and a larger effective incision area. At the same time, the blade 101 has a balancing hole, and the cutting force is more stable.

Claims

1. A hydrophobic U-shaped puncture knife for puncturing and / or cutting operations, characterized in that: include: A knife body assembly and a protective cap that can be combined and / or separated from each other, one end of the knife body assembly is protruding outward along the knife body assembly, and the protective cap as a whole is a columnar structure with a semi-closed opening at one end, and the protective cap includes a limiting portion and a movable portion, and the limiting portions are arranged parallel to each other at the left and right ends of the protective cap, and there are two movable portions, and both are semi-circular shell structures, and the two movable portions are bent at one end away from the opening of the protective cap, and the bending parts of the two movable portions are locked and closed with each other, and the limiting portions are respectively embedded in the two movable portions, and the side walls thereof are fitted with the movable portions, and at least a part of the knife body assembly can be limitedly arranged in the protective cap, and has the freedom to move along the opening direction of the protective cap.

2. The hydrophobic U-shaped puncture knife according to claim 1, characterized in that: The limiting portion is also provided with a limiting protrusion protruding along its inner wall toward the inside of the protective cap, and the extending direction of the limiting protrusion is perpendicular to the inner surface of the limiting portion. The limiting portion is also provided with a touch strip protruding along its outer wall toward the outside of the protective cap, and the touch strip extends from the limiting portion to the movable portion and fits with the outer surface of the protective cap, so as to separate the knife body assembly from the protective cap.

3. The hydrophobic U-shaped puncture knife according to claim 2, characterized in that: The blade assembly includes a blade and a handle body. One end of the handle body protrudes outward and is provided with a connecting portion for connecting the blade and combining with a protective cap. The other end of the handle body is bent, and the blade is detachably connected to the connecting portion. A side wall of the handle body is also provided with a gripping portion for holding the handle body.

4. The hydrophobic U-shaped puncture knife according to claim 3, characterized in that: The end of the handle body with a connecting portion is a square column structure, and its side edges are rounded. The other end of the handle body is bent toward the top of the handle body and extends toward the connecting portion. The end of the handle body without a connecting portion is bent to form a semi-closed structure for the hanging operation of the puncture knife.

5. The hydrophobic U-shaped puncture knife according to claim 4, characterized in that: The holding portion is correspondingly arranged at the bottom of the handle body, and the holding portion is arranged to protrude outward in a stepped manner along a direction perpendicular to the bottom surface of the handle body. The two ends of the holding portion are in contact with the bottom surface of the handle body, and the holding portion is symmetrically protruded from the two ends to the middle thereof in sequence along the direction away from the handle body. The left and right side walls of the handle body are also respectively provided with a certain number of holding grooves with through openings at both ends, and the holding grooves are arranged inclined toward one side of the connecting portion.

6. The hydrophobic U-shaped puncture knife according to claim 5, characterized in that: When the blade assembly and the protective cap are combined with each other, the left and right side walls of the connecting part are configured to abut against the limiting protrusions to limit the blade assembly, and a certain gap is provided between the top and bottom ends of the connecting part and the movable part to separate the blade assembly and the protective cap.

7. The hydrophobic U-shaped puncture knife according to claim 6, characterized in that: The middle opening of the connecting part is used to connect the blade. The front and rear ends of the blade are respectively provided with a circular hole penetrating the blade, which are used to balance the blade and fix it to the connecting part respectively. The blade end is a crescent-shaped structure with edges on both sides, and the surface of the blade is coated with a hydrophobic coating.

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