CN2449657Y

CN2449657Y - Pathological tissue aspiration biopsy needle

Info

Publication number: CN2449657Y
Application number: CN 00255855
Authority: CN
Inventors: 陈著声
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-30
Filing date: 2000-11-30
Publication date: 2001-09-26
Anticipated expiration: 2010-11-30

Abstract

The utility model discloses a pathological tissue aspiration biopsy needle which is composed of a stylophore 1 and a needle core 2. Ends of the stylophore 1 and needle core 2 are provided with slopes with identical angles. The back of the tip slope of the needle core 2 is provided with a barb 5. The hand-hold end of the needle core 2 is provided with a positioning block 6. The end symmetrical point of the hand-hold end of the stylophore 1 is provided with a shallow positioning slot and a deep limit slot which match with the positioning block 6 to ensure respectively that the slope of the needle core 2 matches with the slope of the stylophore 1 and the barb 5 arranged on the back of the tip slope completely extends out of the slope of the aspiration end of the stylophore 1. The utility model has the advantages that the utility model has simple structure and convenient operation and the utility model can cut out the pathological tissue by one-time aspiration.

Description

Pathological tissue aspiration biopsy pin

This utility model relates to the apparatus of medical field biopsy, particularly a kind of pathological tissue aspiration biopsy pin.

The method that cuts pathological tissue generally is to adopt operation to cut at present, operation process needs higher professional technique comparatively speaking, and relatively waste time and energy, damage to patient has simultaneously caused bigger misery greatly and to patient, also cause malignant tumor to shift easily, increased the probability of pathological changes diffusion.

The aspiration biopsy pin that provides a kind of one-time puncture can cut pathological tissue just is provided the purpose of this utility model, and should have simple in structure, convenience operation.

For achieving the above object, this utility model pathological tissue aspiration biopsy pin is by stylophore, nook closing member is formed, stylophore, the cutting tip of nook closing member has the identical inclined-plane of angle, the back of the pinpoint inclined plane of nook closing member cutting tip is provided with the barb with sharp sword, symmetric position place, end at the handheld terminal of stylophore has a more shallow locating slot and a darker stopper slot, be provided with the locating piece of a projection at the handheld terminal of nook closing member, wherein the total length of nook closing member is slightly larger than the total length of stylophore, after the locating piece on the nook closing member enters more shallow locating slot location, the inclined-plane of nook closing member is just in time identical with the inclined-plane of stylophore, when nook closing member Rotate 180 °, locating piece enter darker stopper slot spacing after, the barb at pinpoint inclined plane back stretches out the inclined-plane of stylophore cutting tip fully.

When using this utility model pathological tissue aspiration biopsy pin to organize to cut, earlier the locating piece on the nook closing member is inserted more shallow locating slot location, the inclined-plane of the inclined-plane of nook closing member and stylophore coincide at this moment, form the needle tip of an integral body, puncture needle can thrust pathological tissue inside easily like this, after thrusting pathological tissue inside, extracting nook closing member slightly removes the location and fetters Rotate 180 ° again, continue then nook closing member is thrust, it is spacing with darker stopper slot by locating piece to thrust the degree of depth, the barb at back, nook closing member inclined-plane stretches out the inclined-plane of stylophore cutting tip fully at this moment, and form a front cutting edge with the ramp of stylophore cutting tip, extract nook closing member slightly and can downcut a fritter pathological tissue this moment, at last whole puncture needle extracted promptly to finish to cut pathological tissue, thereby guaranteed that one-time puncture can cut the purpose of pathological tissue, damage to patient is little, alleviated patient's misery, simultaneously the simple structure of puncture needle, it is also extremely convenient to operate, and does not need special professional technique.

Below in conjunction with the drawings and specific embodiments this utility model pathological tissue aspiration biopsy pin is described in further detail.

Fig. 1 is the front view of this utility model pathological tissue aspiration biopsy pin stylophore.

Fig. 2 is the vertical view of stylophore shown in Figure 1.

Fig. 3 is the partial bottom view of stylophore shown in Figure 1.

Fig. 4 is the front view of this utility model pathological tissue aspiration biopsy pin nook closing member.

Fig. 5 is the vertical view of nook closing member shown in Figure 4.

Fig. 6 is the front view of this utility model stylophore and nook closing member assembling when forming locating piece on puncture needle and the nook closing member and inserting more shallow locating slot location.

Fig. 7 is that the assembling of this utility model stylophore and nook closing member forms locating piece on puncture needle and the nook closing member and is positioned at the front view of darker stopper slot when spacing.

Fig. 1 to Fig. 7 has provided the specific embodiment of this utility model pathological tissue aspiration biopsy pin, it is made up of stylophore 1, nook closing member 2, nook closing member 2 kinks are in stylophore 1, and the cutting tip of stylophore 1, nook closing member 2 has the identical inclined-plane of angle, wherein Fig. 1 to Fig. 3 has provided the sketch map of stylophore 1, the end of the handheld terminal of stylophore 1 is bigger than the sheath body, the handheld terminal place also is provided with handle, to make things convenient for the doctor to hand puncture needle, the end of stylophore 1 handheld terminal also has a mutual symmetric more shallow locating slot 3 and a darker stopper slot 4.Fig. 4 and Fig. 5 have provided the sketch map of nook closing member 2, the back of the pinpoint inclined plane of nook closing member 2 cutting tips is provided with the barb 5 with sharp sword, the handheld terminal of nook closing member 2 is provided with the locating piece 6 of a projection, the end of nook closing member 2 handheld terminals is also big, to make things convenient for the doctor to insert, extract or rotate nook closing member 2, the locating slot 3 of the width of this locating piece 6 and stylophore 1 handheld terminal end, the width of stopper slot 4 matches, the total length of nook closing member 2 is slightly larger than the total length of stylophore 1, the diameter of the diameter of nook closing member 2 and stylophore 1 centre bore matches, the locating slot 3 of stylophore 1 end, the degree of depth of stopper slot 4 should satisfy: after the locating piece on the nook closing member 26 enters more shallow locating slot 3 location, the inclined-plane of nook closing member 2 is just in time identical with the inclined-plane of stylophore 1, when nook closing member 2 Rotate 180s °, locating piece 6 enter darker stopper slot 4 spacing after, the barb 5 at pinpoint inclined plane back stretches out the inclined-plane of stylophore 1 cutting tip fully.When Fig. 6 and Fig. 7 have provided stylophore 1 and nook closing member 2 assemblings respectively and form locating piece 6 on puncture needles and the nook closing member 2 and insert more shallow locating slot 3 location, locating piece 6 on the nook closing member 2 is positioned at darker stopper slot 4 sketch map when spacing, insert under the more shallow locating slot 3 localized situations at the locating piece on the nook closing member 2 shown in Figure 66, the inclined-plane of nook closing member 2 is just in time identical with the inclined-plane of stylophore 1, can form the needle tip of an integral body like this, can successfully thrust pathological tissue and can not carry the normal structure of stinging fashionable process secretly, be positioned under the spacing situation of darker stopper slot 4 at the locating piece 6 on the nook closing member 2 shown in Figure 7, the barb 5 at back, nook closing member 2 inclined-plane stretches out the inclined-plane of stylophore 1 cutting tip fully, and form a front cutting edge with the ramp of stylophore 1 cutting tip, extract nook closing member 2 slightly and can downcut a fritter pathological tissue and be kept in the cutting edge of needle point this moment, can obtain the pathological tissue that cuts after taking out puncture needle easily.

Claims

1, a kind of pathological tissue aspiration biopsy pin, by stylophore (1), nook closing member (2) is formed, nook closing member (2) kink is in stylophore (1), it is characterized in that: stylophore (1), the cutting tip of nook closing member (2) has the identical inclined-plane of angle, the back of the pinpoint inclined plane of nook closing member (2) cutting tip is provided with the barb (5) with sharp sword, the handheld terminal of nook closing member (2) is provided with the locating piece (6) of a projection, the end of stylophore (1) handheld terminal also has a mutual symmetric more shallow locating slot (3) and a darker stopper slot (4), locating slot (3), locating piece (6) on the width of stopper slot (4) and the nook closing member (2) matches, locating slot (3), the degree of depth of stopper slot (4) satisfies: after the locating piece (6) on the nook closing member (2) enters more shallow locating slot (3) location, the inclined-plane of nook closing member (2) is just in time identical with the inclined-plane of stylophore (1), when nook closing member (2) Rotate 180 °, locating piece (6) enter darker stopper slot (4) spacing after, the barb at pinpoint inclined plane back (5) stretches out the inclined-plane of stylophore (1) cutting tip fully.