CN2202501Y - Using muscular injection syringe needle as core of bone marrow puncture needle - Google Patents

Abstract

The utility model provides a fine needle core that can be matched with a common intramuscular injection needle head and that acts as a puncture needle. The utility model can be matched with an injection needle head to perform a bone-marrow extracting operation at the parts of the breastbones, etc., and when operating, user just need to directly connect the needle head with the injector and hold the injector as holding a pen and directly press the needle in with brawn. The utility model is composed of a common needle core stem and a needle core handle that is provided with a blind taper hole and that is made of plastics or stainless steels. The utility model is simple in structure, easy in production and low in cost, and the operation method is simple and is easy to learn; the force applied in the utility model is easy to control, and the utility model can be used together with a common intramuscular injection needle head as a disposable puncture needle; the utility model is safe, sanitary and reliable.

Description

Using muscular injection syringe needle as core of bone marrow puncture needle

This utility model relates to a kind of therapeutic medical apparatus, particularly matches with common intramuscular injection syringe needle as the nook closing member of the puncture needle that carries out the bone marrow aspiration operation at chest.

Traditional marrow puncture needle is a kind of thicker pin, it divides nook closing member and syringe needle two parts, and nook closing member comprises needle core handle and nook closing member stalk, and a protuberance is arranged on the edge of needle core handle, match with piercing needle, generally take the method for arm strength rotation inserting needle when using it to puncture.Because of its structure is complicated, the syringe needle external diameter is thicker, make supporting nook closing member also longer, so complicated operation during puncture needs local anesthesia, required time is longer, makes patient very painful, uses extremely inconvenient.And because needle core handle is less, be difficult for gripping, the operation effort firmly is difficult to control, and is big to patient trauma, dangerous.

(the Chinese patent notification number: 2063006) size has certain reducing to medullo-puncture needle after the improvement, does not need local anaesthesia, but the structure of nook closing member is still comparatively complicated, makes difficulty, and difficult the gripping, and the wayward size that it is exerted oneself easily causes damage.

Some hospital takes directly to match with syringe as puncture needle with common intramuscular injection syringe needle to carry out the operation of chest bone marrow aspiration at present, inserting needle is more convenient, do not need local anesthesia, but owing to do not have nook closing member in the syringe needle, easily produce the phenomenon that bony spur is stopped up syringe needle during puncture, cause difficulty to the operator, make puncture time increase and puncture failure, then bring misery for the patient.

The purpose of this utility model be to avoid the weak point of above-mentioned existing conventional art and provide a kind of thinner can with the match nook closing member of cooperation puncture needle of common intramuscular injection syringe needle.

The purpose of this utility model is achieved in that the tail end of needle core handle has a blind taper hole that matches with the ordinary syringe interface in the nook closing member, the axis of cone or awl splined shaft or frustum rank axle that the needle core handle outer rim has the taper hole with common intramuscular injection syringe needle to adapt.

This nook closing member is owing to the blind taper hole on the needle core handle can be connected with the interface of syringe, the taper hole of needle core handle outer rim or awl splined shaft or frustum rank axle can combine with the taper hole of common intramuscular injection syringe needle closely again, so carry out bone marrow aspiration as puncture needle on breastbone and perform the operation as long as the needle tubing that the operator grips syringe firmly just can match with common intramuscular injection syringe needle and nook closing member.

The long 40-60mm of nook closing member stalk, external diameter 0.25-0.45mm.

The manufactured materials of needle core handle can adopt plastics or rustless steel.

A sign point or a line that aligns with nook closing member stalk end chamfer tip is arranged on the outer rim of needle core handle.

This utility model is because just process a blind taper hole (outer rim of needle core handle is taper hole, awl splined shaft or frustum rank axle) on the needle core handle of traditional nook closing member, so it does not have any special requirement to the structure and the production method of nook closing member, manufacturing process is very simple, and cost is lower, is widely used.The puncture mode that its pen gripping type is directly depressed is very familiar, easy to learn concerning medical personnel, and exert oneself is the very easy control of wrist power, and it is as safe as a house for patients reliable to puncture with common intramuscular injection syringe needle.The needle core handle outer rim is the axis of cone or awl splined shaft or frustum rank axle, and when material adopted common plastics, combining between nook closing member and common intramuscular injection syringe needle and the syringe adapter was comparatively tight, just can not produce the phenomenon that nook closing member and syringe needle come off or misplace when inserting needle.Simultaneously, this nook closing member of making the needle handle material with common plastics is particularly useful for manufacturing the nook closing member of disposable wearing pricker, adapts to the requirement of current medical development.A sign point or a line that aligns with nook closing member stalk end chamfer tip is arranged on the outer rim of needle core handle, the two end of nook closing member stalk and syringe needle is positioned on the same inclined-plane, make inserting needle convenient, wound is little, also can prevent bony spur obstruction syringe needle when carrying out the bone marrow aspiration operation.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Accompanying drawing 1 is the structural representation that this utility model matches with the intramuscular injection syringe needle.

Accompanying drawing 2 is structural representations of the present utility model.

Accompanying drawing 3 is structural representations of another embodiment of the present utility model.

Accompanying drawing 4 is structural representations of another embodiment of this utility model.

Describe in detail according to apparatus detail and the working condition that the utility model proposes below in conjunction with accompanying drawing.

Nook closing member (3) comprises a nook closing member stalk (1) that matches with common intramuscular injection syringe needle, nook closing member stalk (1) is made with the stainless steel silk of φ 0.34mm, be connected with a needle core handle (2) that has blind taper hole (4) thereon, the material of needle core handle (2) is medical disposable plastics, its outer rim is the axis of cone, awl splined shaft or frustum rank axles (5), the size then taper hole with common intramuscular injection syringe needle is suitable, and it has a sign point or a line (6) that aligns with nook closing member stalk (1) end chamfer tip.

When utilizing this nook closing member (3) to combine on the breastbone of child below 14 years old, to carry out the bone marrow aspiration operation with syringe, common intramuscular injection syringe needle, nook closing member stalk (1) is inserted in the common intramuscular injection syringe needle, allow the sign point (6) on the nook closing member align with the beveled tip of syringe needle end, make the two in conjunction with tight, on the blind taper hole (4) of needle core handle (2), connect a last syringe adapter then, the operator grips syringe needle tube, with pen gripping type inserting needle about sternal angle, work angle is advisable with 75 degree, utilizes wrist power directly to depress and thrusts breastbone.Because the sclerotin at breastbone place is comparatively weak loose, the dynamics of exerting oneself will suitably be grasped, and feels and injection needle can erect the time when feeling to have obviously to fall through after thrusting, and has promptly thrust medullary cavity.At this moment, extract syringe and nook closing member (3) out, the two is connected on syringe pumpback promptly has red bone marrow fluid inhalation syringe on the syringe needle after separately again.

Among the above embodiment, piercing needle and nook closing member stalk (1) long 40mm, the external diameter of nook closing member stalk (1) is about 0.34mm.If the chest muscle of infant than horn of plenty, then can adopt long piercing needle and nook closing member, is about 60mm as length, the external diameter of nook closing member stalk is about 0.4mm.The applicant utilizes this nook closing member (3) to combine with common intramuscular injection syringe needle and syringe to implement bone marrow aspiration perform the operation 50 routine infants and a part of adult patients, obtains good result.Do not have 1 example and meet accident, do not have 1 routine puncture failure.

Claims (4)

1, a kind of nook closing member of marrow puncture needle, form by nook closing member stalk and needle core handle, the nook closing member stalk inserts among the puncture needle syringe needle, it is characterized in that: needle core handle (2) tail end has a blind taper hole (4) that matches with the ordinary syringe interface, the axis of cone, awl splined shaft or frustum rank axles (5) that needle core handle (2) outside has the taper hole with common intramuscular injection syringe needle to adapt.

2, nook closing member according to claim 1 is characterized in that: needle core handle (2) is apart from nook closing member stalk (1) point 40-60mm, and external diameter is 0.25-0.45mm.

3, nook closing member according to claim 1 and 2 is characterized in that: the manufactured materials of needle core handle (2) is medical plastic or rustless steel.

4, nook closing member according to claim 3 is characterized in that: a sign point or a line that aligns with nook closing member stalk (1) end chamfer tip is arranged on the outer rim of needle core handle (2).

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