CN203647390U - Puncture needle for multi-point biopsy under guidance of type B ultrasonography - Google Patents

Abstract

The utility model relates to a puncture needle for multi-point biopsy under guidance of type B ultrasonography. The puncture needle comprises a needle stand, a puncture needle and a solid needle core, wherein one end of the needle stand is fixedly connected with the tail end of the puncture needle, the needle stand is provided with a through hole, the head portion of the solid needle core passes through the needle stand through hole and the puncture needle sequentially, the tail portion of the solid needle core is provided with a needle core projection, a plurality of tissue notches are arranged on the puncture needle, the opening directions of adjacent two tissue notches are arranged on the puncture needle in a staggered manner, and the puncture needle is provided with an annular supersonic identifier at a position close to needle tip end. The tissue notches are quadrangular, and the edges of the quadrangle are arc. The tissue notch communicates with the inner hole of the puncture needle, and the four edges of the tissue notches are grinded with inward knife edges. The distance between the annular supersonic identifier and the rear tail portion of the needle point is 1-2mm. The puncture needle allows completion of operation in one time, samples from multiple points, and is flexible in use, accurate and rapid in sampling, simple in manufacture technique. The puncture needle allows micro-invasive biopsy, and is economical and practical.

Description

The lower multiple punch biopsy puncture needle of B ultrasonic guiding

Technical field

This utility model belongs to technical field of medical instruments, relates to the lower multiple punch biopsy puncture needle of a kind of B ultrasonic guiding.

Background technology

Biopsy needle is a kind of medical apparatus and instruments, is applicable to the multiple organs such as kidney, liver, lung, mammary gland, thyroid, prostate, pancreas, testis, uterus, ovary, body surface, can be used for living tissue sampling, the absorption cell of entity tumor and not clear tumor etc.Utilize outer pin detachable, injectable hemorrhage and treatment etc.Present conventional biopsy needle mostly is needle puncture biopsy, though the method is easy and simple to handle, safer, shortcoming is that the amount of drawing materials is less, lacks experience or draws materials position not at that time, does not thrust tumor district and obtains representational tumor tissue, be difficult to draw conclusion accurately, even make the conclusion making mistake.According to domestic, needle puncture biopsy success rate is 77.5～97.0 ﹪ (average 80 ﹪).Therefore, in the process of aspiration biopsy tissue, be badly in need of seeking a kind of quick, method accurate, that reduce sufferer misery of drawing materials.

Summary of the invention

This utility model, for the deficiencies in the prior art, provides a kind of B ultrasonic guiding lower multiple punch biopsy puncture needle.

This utility model comprises needle stand, puncture needle, solid nook closing member, one end of needle stand is fixedly connected with puncture needle afterbody, on described needle stand, have along puncture needle direction the through hole that diameter is more than or equal to puncture needle internal diameter, and on needle stand, the centrage of through hole centrage and puncture needle is overlapping; Solid needle core head is transfixion pin block hole and puncture needle successively, and described solid nook closing member afterbody is provided with nook closing member projection, for blocking needle stand, guarantees that solid nook closing member is in puncture needle; Described puncture needle comprises needle point, needle handle, and the angle [alpha] of needle point is 8～12 degree; On puncture needle needle handle, have multiple notches of organizing, and adjacent two are organized the opening direction of notch to be and to shift to install on needle handle; Puncture needle needle handle is provided with loop-shaped ultrasound identification marking near needle tip;

Needle point rear end tails adopts arc line shaped design, makes the aperture area of needle point reach maximization, and needle point rear end tails inside and outside wall arc transition, does not produce sharp-pointed corner angle, is difficult for scraping injured tissue; Needle point front end afterbody and needle point rear end head arc transition, do not produce sharp-pointed corner angle, is difficult for scraping injured tissue;

Needle point front end adopts the inner arc design of needle point rear end extended line, makes the tip of needle point thinner, reduces the hemorrhage of patient and damage, reduces postoperative stomachache in art;

The described notch of organizing is tetragon, and this tetragonal limit is arc; Organize notch to be communicated with puncture needle endoporus; Organize four edges of notch all to grind the sharp knife edge, this knife edge inwardly;

Described loop-shaped ultrasound identification marking and the distance of needle point rear end tails are 1～2mm.

Described solid needle core diameter is less than the internal diameter of puncture needle, and the distance of the head of solid nook closing member and nook closing member projection is less than the total length 0.1～1cm of needle stand and puncture needle.

This utility model can be according to the position of specifically drawing materials, and selects internal diameter and the length of different puncture needles.

The beneficial effects of the utility model:

This utility model is compared traditional puncture needle; the needle point of this utility model puncture needle is thinner, reduces the hemorrhage of patient and damage, reduces postoperative stomachache in art; thereby can reduce tranquilizer or narcotic using dosage or not use tranquilizer or anesthetis, patient recovers normal activity sooner.

Before skin puncture arrives object tissue, this utility model punctures with solid nook closing member, avoids having non-biopsy to enter in puncture needle in piercing process, thereby affects biopsy effect.

This utility model has the notch of organizing of multiple different loci in use, and notch four edges all grind the sharp knife edge, can be up and down, circumgyration incision tissue, have once and complete, multi-point sampling, uses the advantages such as flexible, accurately location, Wicresoft hinder, processing technology is easy, economical and practical.

Accompanying drawing explanation

Fig. 1 is the front view of this utility model needle stand and puncture needle;

Fig. 2 is the side view of this utility model needle stand and puncture needle;

Fig. 3 is the partial enlarged drawing of Fig. 1;

Fig. 4 is the partial enlarged drawing of Fig. 2;

Fig. 5 is generalized section of the present utility model.

Wherein, 1 is needle stand, and 2 is puncture needle, solid nook closing member 3, and 2-1 is needle point, and 2-2 is for organizing notch, and 2-3 is loop-shaped ultrasound identification marking, and 3-1 is nook closing member projection, and 2-1-1 is needle point front end, and 2-1-2 is needle point rear end.

The specific embodiment

Below in conjunction with accompanying drawing, this utility model is further analyzed.

As shown in Fig. 1,2,3,4,5, this utility model comprises needle stand 1, puncture needle 2, solid nook closing member 3, one end of needle stand 1 is fixedly connected with puncture needle 2 afterbodys, on described needle stand 1, have along puncture needle 2 directions the through hole that diameter is more than or equal to puncture needle 2 internal diameters, and the centrage of through hole centrage on needle stand 1 and puncture needle is overlapping; Solid nook closing member 3 heads run through needle stand 1 through hole and puncture needle 2 successively, and described solid nook closing member 3 afterbodys are provided with nook closing member projection 3-1, for blocking needle stand 1, keep solid nook closing member 2 in puncture needle 2; Described puncture needle 2 comprises needle point 2-1, needle handle, and the angle [alpha] of needle point 2-1 is 8～12 degree; On puncture needle 2 needle handles, offer and multiplely organize notch 2-2, and adjacent two are organized the opening direction of notch 2-2 to be and to shift to install on needle handle; Puncture needle 2 needle handles are provided with loop-shaped ultrasound identification marking 2-3 near needle point 2-1 end;

Needle point rear end 2-1-2 afterbody adopts arc line shaped design, makes the aperture area of needle point 2-1 reach maximization, and needle point rear end 2-1-2 afterbody inside and outside wall arc transition, does not produce sharp-pointed corner angle, is difficult for scraping injured tissue; Needle point front end 2-1-1 afterbody and needle point rear end 2-1-2 head arc transition, do not produce sharp-pointed corner angle, is difficult for scraping injured tissue;

Needle point front end 2-1-1 adopts the inner arc design of needle point rear end 2-1-2 extended line, makes needle point thinner, reduces the hemorrhage of patient and damage, reduces postoperative pain in art;

The described notch 2-2 that organizes is tetragon, and this tetragonal limit is arc; Organize notch 2-2 to be communicated with puncture needle 2 endoporus; Organize four edges of notch 2-2 all to grind the sharp knife edge, this knife edge inwardly;

The distance of described loop-shaped ultrasound identification marking 2-3 and needle point rear end 2-1-2 afterbody is 1～2mm.

Described solid nook closing member 3 diameters are less than the internal diameter of puncture needle 2, and the distance of the head of solid nook closing member 3 and nook closing member projection 3-1 is less than the total length 0.1～1cm of needle stand 1 and puncture needle 2.

When this utility model is used for as common thick puncture needle, the internal diameter of puncture needle 2 is 1.5～2mm, and length is 11～12cm.

Use procedure:

Puncturing while organizing, by this utility model (with solid nook closing member 3) skin puncture and arrive after object tissue, solid nook closing member 3 is taken out, needle stand 1 connects syringe.Biopsy enters organizing in notch 2-2 on puncture needle 2 needle handles by the negative pressure-pumping of syringe, organize notch 2-2 to stop up during as some, can biopsy be sucked by the other notch 2-2 that organizes, move up and down or rotate this utility model (without solid nook closing member 3), Biopsy tissue, by organizing notch 2-2 to suck in puncture needle 2, reaches a pin multidraw object.Accurate loop-shaped ultrasound identification marking 2-3 is carved with in puncture needle 2 sides, adapts to different patients' demand, can accurately locate the degree of depth of inserting needle, to have guaranteed accuracy and the safety of sampling operation.

Above-described embodiment is not that this utility model is not limited only to above-described embodiment for restriction of the present utility model, as long as meet this utility model requirement, all belongs to protection domain of the present utility model.

Claims (1)

1. the lower multiple punch biopsy puncture needle of B ultrasonic guiding, is characterized in that comprising needle stand, puncture needle, solid nook closing member; One end of needle stand is fixedly connected with puncture needle afterbody, on needle stand, has along puncture needle direction the through hole that diameter is more than or equal to puncture needle internal diameter, and on needle stand, the centrage of through hole centrage and puncture needle is overlapping; Solid needle core head is transfixion pin block hole, puncture needle successively; Solid nook closing member afterbody is provided with nook closing member projection; Described puncture needle comprises needle point, needle handle, and the angle [alpha] of needle point is 8～12 degree; On puncture needle needle handle, have multiple notches of organizing, and adjacent two are organized the opening direction of notch to be and to shift to install on needle handle; Puncture needle needle handle is provided with loop-shaped ultrasound identification marking near needle tip, and the distance of loop-shaped ultrasound identification marking and needle point rear end tails is 1～2mm;

Needle point rear end tails adopts arc line shaped design, and needle point rear end tails inside and outside wall arc transition; Needle point front end afterbody and needle point rear end head arc transition; Needle point front end adopts the inner arc design of needle point rear end extended line;

The described notch of organizing is tetragon, and this tetragonal limit is arc; Organize notch to be communicated with puncture needle endoporus; Organize four edges of notch all to grind the sharp knife edge, this knife edge inwardly;

Described solid needle core diameter is less than the internal diameter of puncture needle, and the distance of the head of solid nook closing member and nook closing member projection is less than the total length 0.1～1cm of needle stand and puncture needle.

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