CN216495548U - Anti-skid puncture needle for negative pressure drainage - Google Patents

Abstract

The utility model provides an anti-skid puncture needle for negative pressure drainage, which comprises a cylindrical needle body front section and a needle body rear section, wherein the needle body front section is smoothly connected with the needle body rear section, a needle point is arranged at the end part of the needle body front section far away from the needle body rear section, a drainage tube connecting part is arranged at the end part of the needle body rear section far away from the needle body front section, the needle body rear section comprises an axial anti-skid section, n annular axial anti-skid grooves are arranged on the peripheral surface of the axial anti-skid section, on the axial cross section of the needle body rear section, each axial anti-skid groove is V-shaped, the groove wall of the axial anti-skid groove close to the needle body front section is vertical to the axis of the needle body rear section, the included angle between the groove wall of the axial anti-skid groove far away from the needle body front section and the axis of the needle body rear section is alpha which is not less than 30 degrees and not more than 70 degrees. The utility model has the beneficial effects that by adopting the technical scheme, the slipping condition of holding and pinching the puncture needle under the condition of mucus can be effectively reduced, and an operator can better master the puncture position, the puncture angle and apply axial thrust.

Description

Anti-skid puncture needle for negative pressure drainage

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an anti-skidding puncture needle for negative pressure drainage.

Background

The negative pressure wound treating technology is one new technology developed in recent years for treating wound, and has semi-permeable biological film to close open wound, special negative pressure machine to produce certain negative pressure, drainage tube and dressing to act on the wound after debridement. The process of placing the drainage tube into the wound surface is realized by a puncture needle, one end of the puncture needle is connected with the drainage tube, one end of the drainage tube is placed into the wound surface by penetrating through the skin under the guidance of the puncture needle, and the other end of the drainage tube is connected with a negative pressure device.

The needle body of the puncture needle in the prior art is mostly of a rod-shaped structure with a certain bending angle, the front end of the needle body is provided with a needle point, the rear end of the needle body is connected with a drainage tube, when the puncture needle is used, an operator holds the part of the puncture needle far away from the needle point, the angle of the needle point of the puncture needle is adjusted to enable the needle point and the skin to form an included angle of 30-60 degrees to penetrate the skin, then the part of the needle body close to the needle point is pinched to enable the drainage tube to penetrate the skin, and in order to reduce the frictional resistance between the drainage tube and the skin, the needle body of the puncture needle is mostly arranged to be a smooth surface.

In the actual use process, after the puncture needle is in contact with the wound surface, or after the fingers of an operator are in contact with the wound surface, the puncture needle or the hands of the operator are inevitably stained with liquid such as wound surface mucus, blood, fat and the like, so that the friction force between the puncture needle and the fingers of the operator is very small, the operator is difficult to apply axial pressure to the puncture needle to enable the puncture needle to penetrate through the skin, and meanwhile, the operator is difficult to apply circumferential torque to the puncture needle to adjust the angle of the puncture needle penetrating through the skin.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-skid puncture needle for negative pressure drainage, which has a simple structure and is convenient for applying force, and is particularly suitable for being applied to the negative pressure drainage process of a wound surface.

The technical scheme of the utility model is as follows:

the utility model provides an antiskid pjncture needle for negative pressure drainage, includes cylindrical needle body anterior segment and needle body back end, and needle body anterior segment and needle body back end are level and smooth to be connected to each other, and the contained angle between needle body anterior segment and the needle body back end is 150, and the tip that the needle body back end was kept away from to the needle body anterior segment is equipped with the needle point, and the tip that the needle body anterior segment was kept away from to the needle body back end is equipped with drainage tube connecting portion, and drainage tube connecting portion are used for linking to each other with the drainage tube. The needle body back end includes axial antiskid section, be equipped with 16 annular axial antiskid grooves on axial antiskid section's global, on the axle cross-section of needle body back end, axial antiskid groove is the V-arrangement, and the cell wall that axial antiskid groove is close to the needle body anterior segment is perpendicular with the axis of needle body back end, and the cell wall that axial antiskid groove is kept away from the needle body anterior segment is alpha with the contained angle of the axis of needle body back end, and alpha = 60.

When the puncture needle is used, the part held by an operator is the rear section of the needle body of the puncture needle, and the fingers of the operator apply axial thrust and circumferential torque on the rear section of the needle body to ensure that the needle point penetrates through the skin at a specific angle. According to the utility model, the axial anti-slip section is arranged at the rear section of the needle body, the plurality of axial anti-slip grooves are arrayed at the axial anti-slip section, the groove wall of a single anti-slip groove close to the front section of the needle body is in a circular shape and is vertical to the axis of the rear section of the needle body, when an operator applies thrust to the front section of the needle body at the rear section of the needle body, the thumb and forefinger of the operator can be pinched at the axial anti-slip section, so that the fingers are abutted against the groove wall of the axial anti-slip groove close to the front section of the needle body, and further the force is convenient to apply.

The groove wall of the axial antiskid groove far away from the front section of the needle body is a conical surface facing the advancing direction of the puncture needle (facing the front section of the needle body), and after the needle point penetrates through the skin, the conical surface can enable the rear section of the needle body to smoothly penetrate through the skin, so that the through holes of a person to be punctured are reduced.

Through the scheme, the puncture needle can conveniently apply axial thrust to an operator under the condition that the sliding resistance of the puncture needle and the skin is not excessively increased, and the condition that the operator cannot exert force due to the existence of mucus is reduced.

The axial antiskid section is equipped with on keeping away from the global of the needle body back end of needle body anterior segment one side and is no less than 1 circumference antiskid groove, and the tank bottom surface in circumference antiskid groove is the cylinder, and the straight generating line of cylinder is on a parallel with the axis of needle body back end, and the alignment line of cylinder is convex, and the axis of cylinder place circle is located the tank bottom surface and keeps away from one side of needle body back end axis.

Specifically, a plane respectively coinciding with the axis of the cylinder where the cylindrical surface is located and the axis of the rear section of the needle body is a first plane, a plane respectively coinciding with the axis of the front section of the needle body and the axis of the rear section of the needle body is a symmetrical plane, an included angle between the first plane and the symmetrical plane is beta, and beta =80 °.

When an operator holds the rear section of the needle body, the operator can hold the needle body by three fingers, namely a thumb, an index finger and a middle finger, the thumb and the index finger are held at the axial anti-slip section, the middle finger is supported against the circumferential anti-slip groove, and power is provided for rotation of the rear section of the needle body by the middle finger. According to the utility model, the symmetry plane is perpendicular to the skin surface and is set as the reference direction of the puncture needle, the thumb and the forefinger are pinched at the left side and the right side of the symmetry plane, and the middle finger can be better embedded with the circumferential anti-skidding groove under the condition that the angle is beta =80 degrees. In addition, due to the angular positioning of the circumferential anti-slip groove, the general position of the needle tip can be judged under the condition that the needle tip is not positioned in the lower layer of the skin.

Furthermore, the number of the circumferential anti-slip grooves is two, and the two circumferential anti-slip grooves are symmetrical about the symmetry plane. The two circumferential anti-slip grooves may be adapted for left-handed and right-handed operators.

The circumferential surface of the front section of the needle body is provided with 2 clamping holes which are symmetrical about a symmetrical plane. The clamping hole is used for being matched with the pug grasper, and after the front section of the needle body of the puncture needle extends out of the skin, the puncture needle is integrally pulled out of the skin through the pug grasper.

The utility model has the advantages and positive effects that: due to the adoption of the technical scheme, the slipping condition of holding and pinching the puncture needle under the condition of mucus can be effectively reduced, and an operator can better master the puncture position, the puncture angle and apply axial thrust.

Drawings

Fig. 1 is a schematic diagram of the structural principle of the present invention.

Fig. 2 is a schematic front view of the present invention.

Fig. 3 is a detailed view at B in fig. 2.

Fig. 4 is a cross-sectional view at a-a in fig. 2.

In the figure: 1. the needle body anterior segment 2, the needle body back end 3, drainage tube connecting portion 4, axial non-slip section 5, circumference antiskid groove 6, symmetry plane 7, centre gripping hole 41, axial antiskid groove.

Detailed Description

As shown in fig. 1-4, the present invention:

the utility model provides an antiskid pjncture needle for negative pressure drainage, includes cylindrical needle body anterior segment 1 and needle body back end 2, and needle body anterior segment 1 links to each other with 2 levels of needle body back end, and the contained angle between needle body anterior segment 1 and the needle body back end 2 is 150, and the tip that needle body back end 2 was kept away from to needle body anterior segment 1 is equipped with the needle point, and the tip that needle body anterior segment 1 was kept away from to needle body back end 2 is equipped with drainage tube connecting portion 3, and drainage tube connecting portion 3 is used for linking to each other with the drainage tube. The needle body back end 2 comprises an axial anti-slip section 4, 16 annular axial anti-slip grooves 41 are formed in the circumferential surface of the axial anti-slip section 4, the axial anti-slip grooves 41 are V-shaped on the axial cross section of the needle body back end 2, the groove wall, close to the front needle body section 1, of each axial anti-slip groove 41 is perpendicular to the axis of the needle body back end, the included angle formed by the groove wall, far away from the front needle body section, of each axial anti-slip groove and the axis of the needle body back end 2 is alpha, and alpha =60 degrees.

The axial non-slip section 4 is equipped with on keeping away from the global of the needle body back end 2 of 1 one side of needle body anterior segment and is no less than 1 circumference antiskid groove 5, and the tank bottom surface in circumference antiskid groove 5 is the cylinder, and the straight generating line of cylinder is on a parallel with the axis of needle body back end, and the alignment line of cylinder is convex, and the axis of cylinder place circle is located one side that the needle body back end axis was kept away from to the tank bottom surface.

The plane respectively coinciding with the axis of the cylinder where the cylindrical surface is located and the axis of the needle body rear section 2 is a first plane, the plane respectively coinciding with the axis of the needle body front section 1 and the axis of the needle body rear section 2 is a symmetrical plane 6, the included angle between the first plane and the symmetrical plane is beta, and beta =80 degrees.

The circumferential surface of the front section of the needle body is provided with 2 clamping holes 7 which are symmetrical about a symmetry plane.

The working process of the example is as follows:

when the anti-skidding needle is used, an operator holds and pinches the rear section 2 of the needle body, three fingers, namely a thumb, an index finger and a middle finger are used for holding and pinching, the thumb and the index finger are held and pinches the anti-skidding section 4 in the axial direction, and the middle finger is abutted against the anti-skidding groove 5 in the circumferential direction. When the operator applys the thrust to the needle body anterior segment at the needle body back end, the thumb and the forefinger of operator's finger can be held between the fingers in axial antiskid section 4 departments, make thumb and forefinger offset near the cell wall of needle body anterior segment with axial antiskid groove 41, and then are convenient for exert oneself, and the finger provides power for the rotation of needle body back end 2 in the utilization. After the front section 1 of the needle body of the puncture needle extends out of the skin, the puncture needle is integrally pulled out of the skin through the pug forceps.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the utility model. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (4)

1. The utility model provides an antiskid pjncture needle for negative pressure drainage, includes cylindrical needle body anterior segment and needle body back end, and needle body anterior segment and needle body back end are level and smooth to be connected to each other, and contained angle between needle body anterior segment and the needle body back end is 110 + 170, and the tip that the needle body back end was kept away from to the needle body anterior segment is equipped with the needle point, and the tip that the needle body anterior segment was kept away from to the needle body back end is equipped with drainage tube connecting portion, its characterized in that: the needle body back end comprises an axial anti-slip section, n annular axial anti-slip grooves are formed in the circumferential surface of the axial anti-slip section, n is larger than or equal to 2 and is an integer, the axial anti-slip grooves are V-shaped, the groove wall of each axial anti-slip groove close to the front needle body section is perpendicular to the axis of the rear needle body section, the included angle between the groove wall of each axial anti-slip groove far away from the front needle body section and the axis of the rear needle body section is alpha, and alpha is larger than or equal to 30 degrees and smaller than or equal to 70 degrees.

2. The negative pressure drainage antiskid puncture needle according to claim 1, characterized in that: the axial antiskid section is equipped with on keeping away from the global of the needle body back end of needle body anterior segment one side and is no less than 1 circumference antiskid groove, and the tank bottom surface in circumference antiskid groove is the cylinder, and the straight generating line of cylinder is on a parallel with the axis of needle body back end, and the alignment line of cylinder is convex, and the axis of cylinder place circle is located the tank bottom surface and keeps away from one side of needle body back end axis.

3. The negative pressure drainage antiskid puncture needle according to claim 2, characterized in that: the plane respectively coinciding with the axis of the cylinder where the cylindrical surface is located and the axis of the rear section of the needle body is a first plane, the plane respectively coinciding with the axis of the front section of the needle body and the axis of the rear section of the needle body is a symmetrical plane, the included angle between the first plane and the symmetrical plane is beta, and the beta is more than or equal to 60 degrees and less than or equal to 90 degrees.

4. The negative pressure drainage antiskid puncture needle according to claim 3, characterized in that: the circumferential surface of the front section of the needle body is provided with 2 clamping holes which are symmetrical about a symmetrical plane.

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