Flat-head-shaped guide needle

Abstract

According to the technical scheme, the flat-head-shaped guide needle comprises a needle body, a duckbilled cutting edge part is arranged at the front end of the needle body, the front end of the duckbilled cutting edge part is arranged to be in an inclined state, the section of the cutting edge part is round, the inclination angle of the front end of the duckbilled cutting edge part is 10-20 degrees, and the duckbilled cutting edge part gradually inclines to form a puncture tip end. The duckbilled cutting edge part is arranged on the needle body, the machining and grinding direction of the cutting edge is longitudinal, the needle body is a concave-convex grab handle connecting rod, a pagoda-shaped drainage tube connecting part is arranged at the tail end of the needle body and can be firmly connected with a drainage tube, and the duckbilled cutting edge part, the needle body and the connecting part are integrally formed to form the flat-head-shaped guide needle. According to the utility model, the existing three-edged and multi-prismatic guide needle is improved into the flat-head-shaped guide needle with the longitudinal cutting edge processing and grinding direction, and the drainage tube is punctured and mounted in a manner of'squeezing 'to conform to human tissues, so that the'cutting' puncture manner of the prismatic guide needle is changed, and the injury to the organism tissues of a patient is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of guide needles, in particular to a flat-head guide needle. Background Art

[0002] A guide needle is a medical device used for drainage tube puncture guidance during surgical operations. Existing guide needles are mostly triangular or multi-prism-shaped guide needles that are grinded transversely (perpendicular to the direction of the guide needle). The puncture process relies on the tip of the blade to cut through the tissue to lead out the drainage tube.

[0003] This shape of guide needle forms a cut wound during the puncture, which has a larger wound range, slow healing, and deep scar marks. At the same time, the grinding lines of the horizontal grinding edge of the guide needle with triangular or multi-prism processing during puncture also injure human tissue, adding to the risk of tissue damage during the puncture process. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a flat-headed guide needle.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A flat-head guide needle comprises a needle body, wherein a duckbill cutting edge is arranged at the front end of the needle body, the front end of the duckbill cutting edge is arranged in an inclined state, the cross-section of the cutting edge of the duckbill cutting edge is circular, the cutting edge of the duckbill cutting edge is processed and ground in a longitudinal direction, the front end inclination angle of the duckbill cutting edge is 10-20°, and the duckbill cutting edge is gradually inclined to form a tip.

[0007] Preferably, the inclined surface of the duckbill cutting edge is set as a flat surface.

[0008] Preferably, the length of the inclined surface of the duckbill cutting edge is 15-20 mm.

[0009] Preferably, the diameter of the cross section of the duckbill cutting edge is 3-7 mm.

[0010] Preferably, the needle body comprises a recessed portion and a handle portion, the recessed portion is arranged between the duckbill-shaped cutting edge portion and the handle portion, and a "pagoda"-shaped connecting portion is arranged at the rear end of the needle body.

[0011] Preferably, the duckbill cutting edge portion, the recessed portion, the handle portion and the connecting portion are integrally formed.

[0012] Preferably, the total length of the duckbill cutting edge, the recessed portion, the handle portion and the connecting portion is 150-170 mm.

[0013] Preferably, the duckbill cutting edge, the recessed portion, the handle portion and the connecting portion are all made of medical stainless steel.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model improves the existing triangular and multi-prism guide needles into flat-head guide needles with longitudinally ground edges. The flat-head guide needles are mainly "squeezed" rather than "cut". The grinding lines on the guide needle edge are consistent with the puncture direction of human tissue, which can minimize the risk of tissue damage. The flat-head guide needles are much less harmful to capillaries and peripheral nerves than triangular and multi-prism guide needles, and have less trauma, faster healing, and smaller scars.

[0016] 2. The utility model uses a duckbill-shaped blade processing technology to grind the blade longitudinally. During surgical puncture, the blade pattern is consistent with the puncture direction, reducing the damage during the puncture process;

[0017] 3. The utility model facilitates the bending of the guide needle through the recessed portion, which helps the user to grasp the direction during puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components. Among them:

[0019] Figure 1 It is the front view of the utility model;

[0020] Figure 2 This is a top view of the utility model.

[0021] Notes in the figure: 1. Duckbill blade; 2. Recessed portion; 3. Handle portion; 4. Connecting portion. DETAILED DESCRIPTION

[0022] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0023] like Figure 1As shown, as a flat-head guide needle of the utility model, it includes a duckbill blade portion 1, a recessed portion 2, a handle portion 3 and a connecting portion 4. The duckbill blade portion 1, the recessed portion 2, the handle portion 3 and the connecting portion 4 are integrally formed, and the material is stainless steel. The recessed portion 2 is located between the duckbill blade portion 1 and the handle portion 3, and the connecting portion 4 is located at the rear end of the handle portion 3. The recessed portion 2 and the handle portion 3 constitute a guide needle body, and the connecting portion 4 is configured as a "pagoda"-shaped guide needle connecting end. The integral molding is beneficial to the production of the product and improves the production efficiency. The connecting portion 4 is used to connect the drainage tube, and the guide needle is conveniently bent through the reduced diameter portion of the recessed portion 2, which is beneficial to the user to grasp the direction during puncture.

[0024] like Figure 2 As shown, the front end of the duckbill blade portion 1 is set to an inclined state, and the inclined surface of the duckbill blade portion 1 is set to a flat surface, the blade processing and grinding direction of the duckbill blade portion is longitudinal, and the blade is longitudinally ground through the duckbill blade processing technology. During the surgical puncture, the blade texture is consistent with the puncture direction, which reduces the damage during the puncture process. The front end inclination angle of the duckbill blade portion 1 is 10-20°, and the duckbill blade portion 1 is gradually tilted to form a tip, and a small opening is produced by the flat head needle tip, and then the tissue elasticity is used to squeeze the tissue to the surroundings through mechanical force to form a channel. By improving the existing triangular and multi-faceted guide needles with transverse grinding processes into longitudinally ground duckbill guide needles, the risk of damage to the tissue can be minimized mainly by "squeezing" rather than "cutting". The duckbill flat head guide needle is much lighter than the triangular and multi-faceted guide needles in terms of capillaries and peripheral nerves, and has less trauma, faster healing, and smaller scars.

[0025] The cross-section of the blade of the duckbill blade portion 1 is circular, and the diameter is 3-7mm. The appropriate diameter ensures that the guide needle will not be too thick. If it is too thick, its puncture resistance will increase sharply, and once it exceeds the normal elasticity of the tissue, it will cause more serious lacerations, which is not worth the loss. The length of the inclined surface of the duckbill blade portion 1 is 15-20mm, and the total length of the duckbill blade portion 1, the recessed portion 2, the handle portion 3 and the connecting portion 4 is 150-170mm. The sufficient length ensures that the front puncture depth is sufficient and the handle portion 3 is stressed, making the guide needle more convenient and labor-saving to use. It is suitable for thyroid and breast surgery, as well as orthopedic and limb surgery.

[0026] A small opening is created using a flat-tipped needle tip, and then the tissue elasticity is used to mechanically squeeze the tissue to form a channel. After the tube is removed, the tissue can be well bonded together simply by relying on its elastic recovery and surface tension. It has the advantages of less trauma, faster healing, and smaller scars.

[0027] The technical scope of the present invention is not limited to the contents described above. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A flat head guide needle, characterized in that: The needle body comprises a needle body, wherein a duckbill-shaped cutting edge portion (1) is arranged at the front end of the needle body, the front end of the duckbill-shaped cutting edge portion (1) is arranged in an inclined state, the cross section of the cutting edge of the duckbill-shaped cutting edge portion (1) is circular, the cutting edge of the duckbill-shaped cutting edge portion (1) is processed and ground in the longitudinal direction, the front end of the duckbill-shaped cutting edge portion (1) has an inclination angle of 10-20°, and the duckbill-shaped cutting edge portion (1) is gradually inclined to form a tip.

2. A flat head guide needle according to claim 1, characterized in that: The inclined surface of the duckbill cutting edge portion (1) is arranged as a flat surface.

3. A flat head guide needle according to claim 2, characterized in that: The length of the inclined surface of the duckbill cutting edge (1) is 15-20 mm.

4. The flat-head guide needle according to claim 3, characterized in that: The diameter of the cross section of the duckbill cutting edge (1) is 3-7 mm.

5. The flat-headed guide needle according to claim 1, characterized in that: The needle body comprises a recessed portion (2) and a grip portion (3), the recessed portion (2) being arranged between the duckbill-shaped cutting edge portion (1) and the grip portion (3), and a "pagoda"-shaped connecting portion (4) being arranged at the rear end of the needle body.

6. The flat-headed guide needle according to claim 5, characterized in that: The duckbill-shaped cutting edge portion (1), the recessed portion (2), the handle portion (3) and the connecting portion (4) are integrally formed.

7. The flat-headed guide needle according to claim 6, characterized in that: The total length of the duckbill-shaped cutting edge portion (1), the recessed portion (2), the handle portion (3) and the connecting portion (4) is 150-170 mm.

8. The flat-headed guide needle according to claim 7, characterized in that: The duckbill-shaped cutting edge portion (1), the recessed portion (2), the handle portion (3) and the connecting portion (4) are all parts made of medical stainless steel.

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