CN2469893Y

CN2469893Y - Disposable infant's sternal puncture needle

Info

Publication number: CN2469893Y
Application number: CN 01212884
Authority: CN
Inventors: 黄卫东
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-26
Filing date: 2001-03-26
Publication date: 2002-01-09
Anticipated expiration: 2011-03-26

Abstract

The utility model discloses a disposable children sternum puncture needle for extracting marrow, which comprises a needle tube and a needle handle, the utility model also comprises a needle core with one end being inserted into the needle tube and the other end being fixed with a column shape plastic head; a shroud ring arranged between the needle handle and the needle core head is covered on the needle core, the shroud ring has a gap, which can be pulled out laterally; and a cuboid needle handle laterally arranged on one side of the needle handle, the gripe connects with the needle handle to form a rigid body. The puncture needle has a simple structure with low cost, which can be used for once, thus avoiding the cross infection, the utility model is easy to locate and operate, the puncturing is reliable with high success rate, the utility model is particularly suitable for the puncture of children sternum marrow extraction.

Description

Disposable children's's sternal puncture needle

This utility model relates to a kind of apparatus that takes out medium in the human body, especially extracts the puncture needle of bone marrow.

In medical science department of pediatrics clinically, the diagnosis of some disease need be done bone marrow cytomorphologic examination, and does bone marrow cytomorphologic examination, must carry out the bone marrow aspiration operation, extracts bone marrow.Before there are tibia, an ilium in the position of bone marrow aspiration operation, posterior superior iliac spine, prominent and breastbone etc., the abundantest with the bone marrow of breastbone, it is best to draw materials, and is the site of puncture of the best.At present, the department of pediatrics puncture needle that can be used as bone marrow aspiration clinically has following several:

1, marrow puncture needle: be conventional, traditional marrow puncture needle, its advantage is that pin is solid, reusable, durable in use.Its shortcoming: (1) this pin many before tibia, ilium, the posterior superior iliac spine puncture because the medullary cavity at these positions of children's is relatively little, or locate badly, easily cause puncture failure; Because of sterilization, not strict some transmission of disease that causes of cleaning, (3) during as sqternal puncture when (2) reusing, and the danger that causes blood vessel behind the breastbone, heart and injury is arranged; Therefore lessly be used for sqternal puncture; (4) wear spicule diameter big (needle tubing is 12#, 16#), damage during puncture greatly, infant and family members thereof are difficult for accepting psychologically.

2, lumbar puncture needle: this pin also has as bone marrow aspiration its shortcoming as the lumbar puncture art clinically: (1) inconvenient operation, and the pin stem is long, no handle, the bad pin of holding; (2) the pin stem is soft relatively, easily causes bending, causes the inserting needle failure.

3, disposable scalp acupuncture: also be useful on bone marrow aspiration, its shortcoming is: because no nook closing member, needle tubing stops up easily, causes puncture failure.

Task of the present utility model provides disposable children's's sternal puncture needle that a kind of bone marrow extracts, and it should be simple in structure, easy to operate and good reliability, can reduce patient's misery.

This utility model comprises needle tubing and is located at this needle tubing one end, the fixing cylinder needle handle of needle tubing, and its characteristics are also to comprise:

(a) end inserts in the described needle tubing from described cylinder needle handle plane one end, and the other end is fixed with the nook closing member of cylindrical plastic head, this nook closing member can be in needle tubing vertical play flexibly;

(b) be arranged between described cylinder needle handle and the nook closing member plastic cap, be enclosed within the collar on the nook closing member, this collar has a breach, can laterally pull out;

(c) be horizontally installed on the rectangular body acupuncture handle in the described cylinder needle handle outside, this pin handle is become an entity with the cylinder needle handle.

The outside, described cylinder needle handle one transverse plane place also is provided with a concave indentation; A side also is provided with a prominent plush copper on described nook closing member plastic cap the inner, and is corresponding with the concave indentation on the cylinder needle handle;

Described collar afterbody is "T"-shaped, laterally pulls out with convenient, separates with nook closing member.

The bone marrow of said structure extracts disposable children's's sternal puncture needle compared with prior art, has following advantage: (1) is simple in structure, and cost is low; (2) disposable use avoids intersection to spread disease; (3) laterally being provided with rectangular body acupuncture handle on the cylinder handle is convenient to the operator and holds pin; (4) operating process is simple, and processing ease is grasped; (5) bone marrow of sternum is abundant than other positions, and with the breastbone position that operates, it is good to draw materials; (6) be provided with nook closing member in the needle tubing, be provided with the detachable collar between nook closing member and the needle tubing again, after pin enters breastbone, shed the collar, nook closing member continues to push ahead, and can avoid the obstruction after needle tubing is worn bone; (7) because pin footpath and length are shorter, damage the dangerous minimum of patient's blood vessel, patient and family members easily accept; (8) puncture is reliable, the success rate height, and through putting into practice: punctured and got bone marrow 102 examples, one-time puncture successfully reaches 98 examples.

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Shown in Figure 1, be structural front view of the present utility model.

Shown in Figure 2, be the left view of Fig. 1.

Shown in Figure 3, be the vertical view of Fig. 1.

In Fig. 1, for expressing clearly structure, upper and lower part has been made broken section.Needle tubing 7 two are unobstructed, and the upper end is a beveled point, and the lower end connects with the center fixation of cylinder needle handle 5, and concordant with its lower surface.The outside, cylinder needle handle 5 lower ends also is provided with a concavity breach 6.Nook closing member 3 one ends penetrate in the needle tubing 7 concordant with the oblique needle point in the upper end of needle tubing 7, the other end is fixed in the columniform plastic cap 1, plastic cap 1 also is nook closing member head 1, the outer upper end of this nook closing member head 1 is provided with a projection 2, corresponding with the concavity breach 6 on the cylinder needle handle 5, promptly projection 2 can stretch in the concavity breach 6.On the nook closing member 3 between cylinder needle handle 5 lower surfaces and the nook closing member head 1, be with a plastics collar 4, but cast-over core 3 rotates, intermediate portion part is notched cylinder, one place, the outside is provided with one and is "T"-shaped afterbody, this breach just allowed nook closing member 3, laterally draw it to be "T"-shaped afterbody, can pull out the collar 4.If draw off the collar 4, nook closing member is subjected to upwards longitudinal force, and the projection 2 on the nook closing member head 1 can insert in the concavity breach 6 on the needle handle 5, and promptly at the needle tip of needle tubing 7, nook closing member 3 can be longer than outside the needle tubing 7, this effect can get rid of pierce through bone after, be blocked in the tamper at needle tubing 7 needle point places.Also be provided with a cuboid handle 8 in the outside of cylinder needle handle 5, this handle 8 constitutes an entity with cylinder needle handle 5, generally adopts plastic production.

In Fig. 2, the side that coexists of the projection 2 on concane gap 6 and the nook closing member head 1 on the needle point of needle tubing 7 and the cylinder needle handle 5 is convenient to positioning action as can be known.Cuboid handle 8 laterally is located on the outside of cylinder 5, conveniently controls integral body and operation technique.

In Fig. 3, needle tubing 7 and nook closing member 3 are in the center of cylinder needle handle 5, and cuboid handle 8 laterally is located at a side of cylinder needle handle 5, but 3 rotations of the collar 4 cast-over cores, and its "T"-shaped afterbody horizontally set is conveniently pulled out.

This disposable children's's sternal puncture needle is to use like this: hand-held needle handle 5 of operator or pin handle 8, at the sqternal puncture position, make needle tubing 7 thrust skin until the breastbone pulp cavity, pull off the collar 4 then, nook closing member 3 is vertically advanced inward again, pushes the tamper of needle tubing 7 needle surfaces open, again 3 groups of nook closing members from needle tubing 7, with the tail end and the syringe of suitable sebific duct connection needle tubing, can extract bone marrow out.

Claims

1, a kind ofly be used for disposable children's's sternal puncture needle that bone marrow extracts, it comprises needle tubing (7) and is located at this needle tubing one end, and the fixing cylinder needle handle (5) of needle tubing is characterized in that also comprising:

(a) end inserts in the described needle tubing (7) from described cylinder needle handle plane one end, and the other end is fixed with the nook closing member (3) of cylindrical plastic head (1), this nook closing member (3) can be in needle tubing (7) vertical play flexibly;

(b) be arranged between described cylinder needle handle (5) and the nook closing member plastic cap (1), be enclosed within the collar (4) on the nook closing member (3), this collar has a breach, can laterally pull out;

(c) be horizontally installed on described cylinder needle handle (5) the rectangular body acupuncture handle (8) of a side outward, this pin handle is become one with cylinder needle handle (5).

2, disposable children's's sternal puncture needle according to claim 1 is characterized in that: the outside, described cylinder needle handle (5) one transverse plane places also is provided with a concave indentation (6); The inner last outside of described nook closing member plastic cap (1) is provided with a plush copper (2), and is corresponding with the concave indentation (6) on the needle handle (5).

3, disposable children's's sternal puncture needle according to claim 1 is characterized in that: the described collar (4) also is provided with one and is "T"-shaped afterbody.