CN200994793Y - Etat negative-pressure tissue cutting needle core - Google Patents

Abstract

The utility model relates to a needle core of a screen hole type negative pressure structure cutting needle, which comprises a hollow tubular needle core body. One end of the needle core body is provided with a caudal end which is connected with an injector, the utility model is characterized in that the internal of the tube orifice of the other head end of the needle core body is provided with a round flat screen plate which matches the inner cavity of the tube orifice, and the round flat screen plate is provided with a plurality of screen holes.

Description

Sieve aperture formula negative pressure is organized the cutting needle nook closing member

Technical field

This utility model relates to a kind of biopsy and organizes the cutting needle nook closing member with negative pressure, belongs to medical instruments field.

Background technology

The biopsy pin of current application roughly is divided into two classes, and a class is supporting sucking type biopsy needle, is characterized in cutting organizational process and has negative pressure, and another kind of is the cutting needle of no negative pressure.When using existing negative pressure cutting needle, organize stripping and slicing usually broken or cut less than tissue, can't reach the purpose of biopsy, also increased patient's misery.

The utility model content

The purpose of this utility model is exactly in order to overcome above-mentioned deficiency, provides a kind of sieve aperture formula negative pressure to organize the cutting needle nook closing member, and this nook closing member cooperates with other existing negative pressure cutting needle assembly, can make to cut to have higher success rate when organizing and difficult fragmentation.

The technical solution of the utility model is: sieve aperture formula negative pressure is organized the cutting needle nook closing member, comprise hollow tubular nook closing member body, be provided with the tail end that links to each other with syringe at an end of nook closing member body, it is characterized in that, another head end mouth of pipe internal fixation at the nook closing member body has the circular flat sieve plate that cooperates with mouth of pipe inner chamber, and this circular flat sieve plate is evenly equipped with a plurality of sieve apertures.

The beneficial effects of the utility model are: because the sieve plate of hollow sieve aperture nook closing member can stop tissue, tissue is unlikely in fragmentation or the inhalation syringe, makes to cut when organizing to have higher success rate.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the sieve aperture formula nook closing member body right side enlarged diagram of Fig. 1;

Fig. 3 is the cutting needle structural representation that is used with sieve aperture formula nook closing member body of the present utility model;

Fig. 4 is the solid needle cored structure sketch map of the cutting needle that is used with sieve aperture formula nook closing member body of the present utility model.

Among the figure; 1 tail end, 2 nook closing member bodies, 3 sieve plates, 4 sieve apertures, 5 solid nook closing members, 6 cutting needles.

The specific embodiment

Be sieve aperture formula nook closing member body structure as shown in Figure 1 and Figure 2.Its middle part is for hollow tubular nook closing member body 1, be provided with the tail end 2 that links to each other with syringe at an end of nook closing member body 1, another head end mouth of pipe internal fixation at the nook closing member body has the circular flat sieve plate 3 that cooperates with mouth of pipe inner chamber, this circular flat sieve plate 3 is evenly equipped with a plurality of sieve apertures 4, is preferably 6 sieve apertures.

Fig. 3 is the cutting needle structural representation that is used with sieve aperture formula nook closing member body of the present utility model.

Cutting needle 6 is the needle body of hollow tubular, and its needle point end flushes clear-cut margin.This is existing member.

Fig. 4 is the solid needle cored structure sketch map of the cutting needle that is used with sieve aperture formula nook closing member body of the present utility model.This is existing member.

Solid nook closing member 5 can be inserted in the cutting needle 6, contact closely, and plug is flexible, and its tip is coniform.Solid nook closing member 5 inserts the coniform needle points in cutting needles 6 backs and just in time exposes outside the cutting needle needle point plane, because needle point is not inclined-plane but the skew of direction does not just take place during inserting needle circular cone.

Sieve aperture formula nook closing member as shown in Figure 1 and Figure 2 also can be inserted in the cutting needle 6, and contact closely can plug again flexibly.Sieve aperture formula nook closing member inserts the cutting needle 6 back sieve plate 3 plane separation cutting needle needle tip about 2cm in edge.

Solid nook closing member 5 is penetrated in the cutting needle 6, extract practice nook closing member 5 after thrusting human body target, penetrate sieve aperture formula nook closing member then, be connected on the 5ml syringe in the tail end 1 of sieve aperture formula nook closing member, lift the syringe pintle and form negative pressure and advance cutting needle 6 to organize cutting simultaneously rapidly.

Claims (1)

1, sieve aperture formula negative pressure is organized the cutting needle nook closing member, comprise hollow tubular nook closing member body, be provided with the tail end that links to each other with syringe at an end of nook closing member body, it is characterized in that, another head end mouth of pipe internal fixation at the nook closing member body has the circular flat sieve plate that cooperates with mouth of pipe inner chamber, and this circular flat sieve plate is evenly equipped with a plurality of sieve apertures.

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