CN2717393Y - Bone narrow suction puncturing needle - Google Patents

Abstract

The utility model discloses a bone narrow suction puncturing needle, comprising a tubular syringe needle 1, a needle core 3, a hypodermic syringe needle cylinder 4, a piston 5 and a piston rod 6, which is characterized in that the needle core 3 is a hollow cavity 7, and the needle front face is a tapered plane 8, and an elliptical suction socket 9 is positioned on the back side of the tapered plane 8. The tubular needle 1 is arranged on the front end seat of the minitype needle cylinder 10, and the hollow cavity 7 of the needle core 3 is communicated with the inner cavity of the minitype needle cylinder 10 whose the outer wall is fixed with hypodermic syringe needle cylinder 4 in parallel. The bone narrow suction puncturing needle collects the paracentesis and suction as an integration, thus which can increase the operating speed, and as a consequence of adopting the combination of big and small needle cylinders, which makes the suction capacity reading be magnified, thus making both the suction capacity and the suction strength easy to be controlled, in addition, also can avoid the bacterial affection.

Description

The bone marrow aspiration puncture needle

Technical field

This utility model relates to a kind of improvement of marrow puncture needle, specifically a kind of bone marrow aspiration puncture needle that collects puncture, suction, quantitatively combines.

Background technology

Bone marrow aspiration marrow aspiration liquid is a kind of traumatic inspection means, is generally first puncture, suction two steps in back are finished.Present employed marrow puncture needle comprises tubular syringe needle, needle holder and nook closing member composition, and nook closing member is solid shank, syringe needle is a tapered plane, is contained in the tubular syringe needle, and the tapered plane of nook closing member tip flushes with the angle face of tubular syringe needle, during puncture, can prevent that foreign material such as bone bits from stopping up the pin hole of tubular syringe needle.When marrow aspiration liquid, use syringe at present usually, after the success of puncture bone marrow, nook closing member is extracted, and the injection head with syringe is inserted in the bellmouth of needle holder again, evenly firmly spurs the piston in the syringe, carry out marrow aspiration liquid, taking out the marrow amount is 0.1-0.2ml.Its weak point: the one, adopt two step operations, incured loss through delay operating time, operation is also inconvenient; The 2nd, extracting nook closing member and installing in the process of inserting syringe, expose operation, increased the chance of courses of infection; The 3rd, in the mounting of syringe process, hands is shaken easily, causes the puncture needle deflection, has increased misery to patient, also can make the puncture needle bending when serious, so that influence is extracted; In addition, pumping velocity and aspiration are also wayward.

Summary of the invention

The purpose of this utility model is to provide a kind of operation simple in structure, easy, disposable puncture and finishes immediately and take out marrow liquid, and the bone marrow aspiration puncture needle of pumping velocity and the easy control of aspiration.

For reaching above purpose, the technical scheme that this utility model adopted is: this bone marrow aspiration puncture needle, by the tubular syringe needle, needle holder, nook closing member, injector syringe, syringe piston, syringe piston rod constitutes, syringe piston and syringe piston rod are contained in the injector syringe, nook closing member is contained in the tubular syringe needle, it is characterized in that being in the nook closing member hollow cavity, the front end face of nook closing member is a tapered plane, establish the ellipticity suction socket at the dorsal part of tapered plane, the needle holder of tubular syringe needle is installed on the front end seat of miniature syringe, the needle core base end is fixed in the pump orifice of miniature syringe end, and bonding is fixing, the hollow cavity of nook closing member is communicated with the inner chamber of miniature syringe, in miniature syringe, sliding plunger is housed, miniature syringe is sealed syringe, fixing injector syringe on the outer wall of miniature syringe side by side, areole is established in the upper end of injector syringe, and be communicated with the areole of miniature syringe upper end, when carrying out bone marrow aspiration, by the pulling syringe piston rod, to pressurizeing in the miniature syringe, make sliding plunger be pressed in the front bottom end of miniature syringe, after puncturing successfully, to stablize the tubular syringe needle and do not rotate, nook closing member rotates 90 degree, the ellipticity suction socket of tapered plane dorsal part that makes nook closing member is towards a side of the angle face of tubular syringe needle, at this moment, the ellipticity suction socket can be exposed, again the pushing syringe piston rod, syringe piston moves down, make to form negative pressure in the miniature syringe, move on the sliding plunger, in the miniature syringe of bone marrow fluid suction immediately.This utility model is also implemented by following measure: the radius of described injector syringe is greater than the radius of miniature syringe, make the aspiration reading reach amplification, as the height on injector syringe is 0.1mm, when radius is 30mm, if miniature syringe radius is 3mm, then the height on miniature syringe is scalable is 10mm, be convenient in time to observe what of aspiration, injector syringe and miniature syringe can once be injected into an integral body, can disposablely use, the front end of injector syringe is established end cap, and the middle part of end cap is provided with passage; The hollow cavity diameter of described nook closing member is 1mm, and overall diameter is consistent with tubular syringe needle interior diameter, and wall thickness 0.3mm also establishes the paracentesis depth baffle ring on the needle holder of tubular syringe needle, so that the control paracentesis depth.

The beneficial effects of the utility model are: owing to integrating puncture, aspirating, so can improve speed of operation; Owing to adopt injector syringe and suction minitype piston tube to combine, make aspiration reach amplification, so in time read aspiration easily, timely suction Controlled amount is avoided the complication of the too much or very few appearance of aspiration; Because in the injector syringe during suction, to carrying on the sliding plunger, so the suction of injector syringe has firmly been played cushioning effect, the easy suction Controlled uniformity coefficient of exerting oneself has been avoided the generation of the too quickly phenomenon of suction force by the negative pressure in the minitype piston tube; Because nook closing member is hollow cavity, top closure, the ellipticity suction socket is established in the side, thus when puncture, both can prevent that the bone bits from entering in the tubular syringe needle, also rotatable 90 degree backs direct in the hollow cavity of nook closing member marrow aspiration liquid, easy to operate, and avoided the infection of antibacterial.

Description of drawings

Fig. 1 looks sketch map for this utility model structure master.

Fig. 2 is that this utility model is along the A-A cross-sectional schematic.

Fig. 3 is that this utility model is along B-B section cross-sectional schematic.

The specific embodiment

Make this utility model with reference to accompanying drawing 1,2,3.This bone marrow aspiration puncture needle, by tubular syringe needle 1, needle holder 2, nook closing member 3, injector syringe 4, syringe piston 5, syringe piston rod 6 constitutes, syringe piston 5 and syringe piston rod 6 are contained in the injector syringe 4, nook closing member 3 is contained in the tubular syringe needle 1, in the nook closing member 3 is hollow cavity 7, the front end face of nook closing member 3 is a tapered plane 8, establish ellipticity suction socket 9 at the dorsal part of tapered plane 8, the needle holder 2 of tubular syringe needle 1 is installed on the front end seat of miniature syringe 10,3 ends 11 of nook closing member are fixed in the pump orifice of miniature syringe 10 ends, and bonding is fixing, the hollow cavity 7 of nook closing member 3 is communicated with the inner chamber of miniature syringe 10, in miniature syringe 10, sliding plunger 13 is housed, miniature syringe 10 is sealed syringe, fixing injector syringe 4 on the outer wall of miniature syringe 10 side by side, areole 12 is established in the upper end of injector syringe 4, and be communicated with the areole of miniature syringe 10 upper ends, when carrying out bone marrow aspiration, by pulling syringe piston rod 6, to pressurization in the miniature syringe 10, make sliding plunger 13 be pressed in the front bottom end of miniature syringe 10, after puncturing successfully, stablizing tubular syringe needle 1 does not rotate, nook closing member 3 rotates 90 degree, and the ellipticity suction socket 9 of tapered plane 8 dorsal parts that makes nook closing member 3 is towards a side of the angle face of tubular syringe needle 1, at this moment, ellipticity suction socket 9 can be exposed, the pushing syringe piston rod 6 again, and syringe piston 5 moves down, and make in the miniature syringe 10 and form negative pressure, move on the sliding plunger 13, in the miniature syringe 10 of bone marrow fluid suction immediately.The radius of described injector syringe 4 is greater than the radius of miniature syringe 10, make the aspiration reading reach amplification, as the height on injector syringe 4 is 0.1mm, when radius is 30mm, if the radius of miniature syringe 10 is 3mm, then the height on miniature syringe 10 is scalable is 10mm, be convenient in time to observe what of aspiration, injector syringe 4 can once be injected into an integral body with miniature syringe 10, can disposablely use, the front end of injector syringe 4 is established end cap 15, and the middle part of end cap 15 is provided with passage; Hollow cavity 7 diameters of described nook closing member 3 are 1mm, and overall diameter is consistent with tubular syringe needle 1 interior diameter, and wall thickness 0.3mm also establishes paracentesis depth baffle ring 14 on the needle holder of tubular syringe needle 1, so that the control paracentesis depth.

Claims (2)

1, a kind of bone marrow aspiration puncture needle, by tubular syringe needle (1), needle holder (2), nook closing member (3), injector syringe (4), syringe piston (5), syringe piston rod (6) constitutes, syringe piston (5) and syringe piston rod (6) are contained in the injector syringe (4), nook closing member (3) is contained in the tubular syringe needle (1), it is characterized in that being in the nook closing member (3) hollow cavity (7), the front end face of nook closing member (3) is tapered plane (8), establish ellipticity suction socket (9) at the dorsal part of tapered plane (8), the needle holder (2) of tubular syringe needle (1) is installed on the front end seat of miniature syringe (10), nook closing member (3) seat end (11) is fixed in the pump orifice of miniature syringe (10) end, the hollow cavity (7) of nook closing member (3) is communicated with the inner chamber of miniature syringe (10), sliding plunger (13) is housed in miniature syringe (10), the fixing side by side injector syringe (4) of going up on the outer wall of miniature syringe (10), areole (12) is established in the upper end of injector syringe (4), and is communicated with the areole of miniature syringe (10) upper end.

2, bone marrow aspiration puncture needle according to claim 1, hollow cavity (7) diameter that it is characterized in that described nook closing member (3) is 1mm, overall diameter is consistent with tubular syringe needle (1) interior diameter, and wall thickness 0.3mm also establishes paracentesis depth baffle ring (14) on the needle holder of tubular syringe needle (1).

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