CN203619637U

CN203619637U - Safe combined puncture epidural anesthesia puncture needle

Info

Publication number: CN203619637U
Application number: CN201320888762.0U
Authority: CN
Inventors: 王家松
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-29
Filing date: 2013-12-31
Publication date: 2014-06-04
Anticipated expiration: 2023-12-31
Also published as: CN104546075A

Abstract

A safe combined puncture epidural anesthesia puncture needle is mainly composed of an epidural puncture needle, an epidural puncture needle core, a lumbar puncture needle and a lumbar puncture needle core. The arc-shaped crook of the epidural puncture needle is provided with a lumbar puncture dorsal pore. The epidural puncture needle core is composed of a safety protection device at the front part, a negative pressure conduction device in the middle, a negative pressure display device at the rear part, an elastic forward device at the tail part and a needle core base, and an epidural puncture needle core is connected with an lumbar puncture needle rear base in a detachable fixing manner. Apart from achieving the purpose of identifying the epidural space doubly, the puncture needle can avoid the needle point of the epidural puncture needle and the epidural conduit entering the subarachnoid space by the needle hole of the lumbar puncture needle, the lumbar puncture needle is prevented from being broken, and the lumbar puncture needle is conveniently fixed in the epidural puncture needle.

Description

Safe combined spinal epidural puncture needle

Technical field

The present invention relates to a kind of safe combined spinal epidural puncture needle.

Background technology

In the time carrying out epidural puncture, falling through while mostly relying on anesthesia personnel to operate feels to judge that anesthesia spinal needle needle point has arrived epidural space at present.Then connect smooth syringe and verify that whether needle tip position is really at epidural space.Also have by various liquid or airbag apparatus and judge whether anesthesia spinal needle reaches epidural space.Because everyone feel sensitivity and reaction coordinated speeds are different, in the time feeling or find that oneself reaches epidural space, puncture may still advanced, and is easy to wear out spinal dura mater, and even Spinal Cord, causes serious consequence.

Now, use clinically commonplace combined spinal epidural puncture needle to have 2 kinds, be U.S. company BD, the product of German Braun company and their similar products, although the latter has a dorsal pore on the needle point flexure plane of anesthesia spinal needle, be strayed into the chance of subarachnoid space to reduce epidural catheter, and can improve the success rate that waist is worn, but lumbar puncture needle still can pass from the angle of anesthesia spinal needle, be not with dorsal pore with the former compared with advantage little.

Summary of the invention

The object of the invention is to design a kind of safe combined spinal epidural puncture needle, can automatically show that needle point arrives epidural space position and pushes in time spinal dura mater open, make the needle point of anesthesia spinal needle away from spinal dura mater, avoid wearing out spinal dural new type of safe combined spinal epidural puncture needle, can also in the situation that not extracting epidural nook closing member, test the reliability of epidural negative pressure, thereby reach the object of dual evaluation epidural space.And, can avoid anesthesia spinal needle needle point and epidural catheter to enter subarachnoid space by lumbar puncture needle pinprick, prevent that lumbar puncture needle from fractureing, facilitate lumbar puncture needle fixing in anesthesia spinal needle.

Safe combined spinal epidural puncture needle of the present invention is made up of anesthesia spinal needle and epidural nook closing member, lumbar puncture needle and lumbar puncture needle core.Wherein, epidural nook closing member is made up of the epidural nook closing member base at anterior epidural nook closing member core body part and rear portion.The front end of core body part has safety device, and mid portion has negative pressure conduction device, and rear end is negative pressure display device.Before having an elasticity in epidural nook closing member base, push away device and nook closing member injection orifice.Epidural nook closing member core body can move forward and backward in epidural nook closing member base.Epidural nook closing member base is that draw-in groove or other fixed forms are connected with anesthesia spinal needle back seat, to prevent that epidural needle core base from rotating at puncture needle back seat.Epidural nook closing member base and lumbar puncture needle tail end are card slot type, rail mounted or other modes and are connected and fixed, and the lumbar puncture needle after preventing from puncturing successfully moves or rotates.Anesthesia spinal needle front end bent back has a waist to wear dorsal pore.

Safety device: preferred scheme is to establish oblate head at the front end of epidural puncture needle core core body part, for the blunt circular arc elbow of circle, oblate head seals anesthesia spinal needle front end in the time of epidural puncture needle core retracted state and waist is worn dorsal pore, prevents that cut tissue from entering in anesthesia spinal needle.In the time that ejecting state, epidural puncture needle core can surmount anesthesia spinal needle needle point 1 ~ 2mm, and spinal dura mater can be pushed open forward and prevented that anesthesia spinal needle needle point from wearing out spinal dura mater, and can expose waist and wear dorsal pore, make epidural space wear dorsal pore by waist and communicate with the external world.

Negative pressure conduction device: be epidural nook closing member core body mid portion, main body is core body, preferred scheme is below core body, to dig one to fall the grooves such as " V " font, " C " shape, " U " shape, the front end of groove is downward slope shape, be connected with safety device, pass waist for guiding lumbar puncture needle and wear dorsal pore; End is connected with nook closing member injection orifice.Can conducting pressure, also can supplied gas, liquid passes through.Also can above core body, excise a part, making has other passages such as an arcuate gap between core body and puncture needle.

Negative pressure display device: be the block outthrust of the end at core body, when after nook closing member perception epidural space negative pressure, under elastic device pushes in the back, rapidly to moving above, stop to being subject to when puncture needle afterbody stops, move the gap of generation and the variation of safety label color below and can judge and arrived epidural space by observing it.Also can be other negative pressure display devices such as an ejection air bag, thin slice.

Before elasticity, push away device: at epidural nook closing member base end, before producing the elasticity that continues thrust forward, nook closing member core body is moved forward, push away device.Can be " V " font, fall the elastic sheets such as " V " font, " C " shape, also can be other elastic devices such as spring, elastic bag.

Epidural nook closing member base: front has smooth track to move for epidural nook closing member core body thereon, and can prevent that it from coming off; There is end gear at rear, can adhere to for pushing away device before elasticity; There is the nook closing member injection orifice communicating with front groove middle and lower part; There is the orbital groove for fixing lumbar puncture needle below.

The head of lumbar puncture needle is half taper tip, has certain radian that has a down dip, and Open Side Down.The tangent plane of lumbar puncture needle nook closing member coincide into a complete coniform tip with lumbar puncture needle front end half taper tip, reaches the spinal dural object of non-cutting.

Lumbar puncture needle back seat can insert and coincide with the nook closing member injection orifice in epidural nook closing member base, and its trapezoidal long column in below can insert in the orbital groove on epidural nook closing member base.After fitting like a glove, the front end of lumbar puncture needle can surmount epidural puncture needle point 7.5mm ~ 15mm.

Dismountable fixed forms such as epidural nook closing member base and lumbar puncture needle back seat can also " U " shape hold, built-in draw-in groove are connected.

Lumbar puncture needle also can be common lumbar puncture needle.

Accompanying drawing explanation

Fig. 1 is epidural puncture needle core when retraction side view of invention preferred embodiment.Wherein: 1-epidural nook closing member core body, 2-waist push away device, 8-nook closing member injection orifice, 9-epidural nook closing member base, 10-lumbar puncture needle needle body, 11-lumbar puncture needle base, the 12-lumbar puncture needle front end back side, the front end grain of 13-lumbar puncture needle, 14-lumbar puncture needle core, 15-lumbar puncture needle core tangent plane end before wearing dorsal pore, 3-anesthesia spinal needle inclined-plane, 4-safety device, 5-epidural puncture Aculeata, 6-negative pressure display device, 7-elasticity.

Side view when Fig. 2 is epidural puncture needle core ejection.

Fig. 3 is the side view after lumbar puncture needle is inserted.

Fig. 4 is lumbar puncture needle toe side view.

Fig. 5 is lumbar puncture needle core toe side view.

Fig. 6 is that lumbar puncture needle core is inserted rear overall toe side view.

The specific embodiment

After ready work, get the anesthesia spinal needle of safety combined spinal epidural puncture needle, make negative pressure display device upwards, conventional puncture procedure, the nook closing member power that is hampered bounces back in puncture needle, in the time of the anterior arrival of puncture needle epidural space, resistance reduces or disappears, before elasticity in back seat, push away device and promote core body reach, safety device is pushed spinal dura mater forward open, prevent that puncture needle from wearing out spinal dura mater, simultaneously, negative pressure display device reach, and expose safety label, prompting puncture needle has arrived epidural space, now must stop puncturing forward, can be by the injection orifice of nook closing member, connection syringe is again tested epidural negative pressure and is reached dual negative pressure test effect, and can watch and have or not blood, cerebrospinal fluid outflow.Adjust after direction, in epidural nook closing member injection orifice, insert lumbar puncture needle, and the trapezoidal long column of lumbar puncture needle back seat is inserted in the orbital groove on epidural nook closing member base, to fix lumbar puncture needle, remaining routine operation.

The foregoing is only embodiments of the invention, not thereby the scope of the claims of restriction invention, meet any transformation of the way of the design's thinking so any and in the application of other relevant technical fields all in the scope of the present invention.

Claims

1. a safe combined spinal epidural puncture needle, main body is made up of anesthesia spinal needle and epidural puncture needle core, lumbar puncture needle and lumbar puncture needle nook closing member, it is characterized in that: the head arc-shaped bend place of anesthesia spinal needle has waist to wear dorsal pore; Anesthesia spinal needle nook closing member is by anterior safety device, middle negative pressure conduction device, and the negative pressure display device at rear portion, pushes away device and nook closing member base and forms before the elasticity of afterbody; Epidural nook closing member base is connected with dismountable fixed form with lumbar puncture needle back seat.

2. according to the safe combined spinal epidural puncture needle described in claim 1, it is characterized in that: safety device can be oblate head having the blunt circular arc elbow of circle.

3. according to the safe combined spinal epidural puncture needle described in claim 1, it is characterized in that: negative pressure conduction device is " V " font, " C " shape, " U " connected in star, the curved channel of core body below, and its front end is downward slope shape.

4. according to the safe combined spinal epidural puncture needle described in claim 1, it is characterized in that: negative pressure display device is block outthrust, eject air bag, thin slice having safety label color after it, on it, can have injection orifice, can communicate with groove.

5. according to the safe combined spinal epidural puncture needle described in claim 3, it is characterized in that: before elasticity, push away device for " V " font, fall " V " font, " C " shape elastic sheet, spring, elastic bag.

6. according to the safe combined spinal epidural puncture needle described in claim 1, it is characterized in that: the front of epidural nook closing member base has the track moving for epidural nook closing member core body thereon, there is the end gear adhering to for pushing away device before elasticity at rear, and there is nook closing member injection orifice middle and lower part; There is the orbital groove for fixing lumbar puncture needle below.

7. according to the safe combined spinal epidural puncture needle described in claim 1, it is characterized in that: the head of lumbar puncture needle is half taper tip, have certain radian that has a down dip, Open Side Down.

8. according to the safe combined spinal epidural puncture needle described in claim 1, it is characterized in that: the tangent plane of lumbar puncture needle nook closing member coincide into a complete coniform tip with lumbar puncture needle front end half taper tip.

9. according to the safe combined spinal epidural puncture needle described in claim 1, it is characterized in that: Lumbus puncture needle bench has protuberance or other modes and epidural puncture needle stand to fix.

10. according to the safe combined spinal epidural puncture needle described in claim 1, it is characterized in that: between epidural nook closing member base and lumbar puncture needle back seat, be card slot type, rail mounted, orbital groove formula, " U " shape and hold the detachable fixed form such as formula, built-in draw-in groove and be connected.