CN200991292Y - Cone-head-like needle-free-core pressure-detection lumbar vertebrae puncturing needle - Google Patents

Abstract

The utility model discloses a taper conical point needle core free pressure measurement lumbar puncture needle, which belongs to a medical treatment apparatus and comprises a needle tube (1), a needle seat (2), and a hand holder (3), which is characterized in that the lower port edge of the needle tube (1) is a flat port edge, and the lower port is provided with the conical head (5) automatically popping out; and the hand holder (3) is arranged on the upper end of the needle seat (2) in the rotation way, while a sealed pressure measurement tube (9) is connected to one side of ht needle seat (2) through a pressure measurement connecting tube (8), whereas a liquid medicine or liquid pumping connecting tube (10) is connected to the other side of the needle seat (2). Due to the conical head shape of needle point part of ht utility model, the puncturing force can not produce deflexion and the aperture direction of the through hole is vertical to the axial direction of the needle tube; and the through hole can be automatically sealed to puncture into the back of the vertebral canal and automatically opened during the puncturing process, thus not only capable of observing the cerebrospinal fluid pressure but also perceiving the puncturing position in good time, making the lumber puncture more convenient and laborsaving, further improving the safety and lumber puncture speed.

Description

The conehead shape does not have nook closing member pressure measurement lumbar puncture needle

Technical field

This utility model relates to the improvement of lumbar puncture needle, belongs to medical instruments field, and specifically a kind of conehead shape does not have nook closing member pressure measurement lumbar puncture needle.

Background technology

Lumbar puncture is diagnosis nerve illness, spinal anesthesia, spinal canal myelography, banish indispensable inspection treatment means such as cerebrospinal fluid, and employed utensil is a lumbar puncture needle when lumbar puncture.Present employed lumbar puncture needle generally all is made of syringe needle, needle stand, nook closing member, the front end of syringe needle is an angle, the front end of nook closing member is the inclined-plane, when puncture, nook closing member is inserted in the tube chamber of syringe needle, the inclined-plane of nook closing member front end gets lodged on the angle of syringe needle front end, after puncture needle enters canalis spinalis, extract nook closing member again, during as if drainage of cerebrospinal fluid or detection cerebrospinal pressure, need on needle stand, connect aspirator or pressure tester by conduit.The weak point of this lumbar puncture needle is: 1, measuring cerebrospinal pressure or extracting cerebrospinal fluid and in Taper Pipe during injection, all must go out nook closing member by withdrawing, when extracting nook closing member, because of not knowing cerebrospinal pressure in advance, therefore press patient then can produce the cerebrospinal fluid ejection if meet high cranium,, insert nook closing member again again for preventing the cerebrospinal fluid ejection, deal with improperly, can form cerebral hernia; 2, adopt the method extract or insert nook closing member to control the cerebrospinal fluid measuring pressure, receive cerebrospinal fluid or canalis spinalis administration etc. repeatedly, inconvenient operation, also more complicated; 3, in operating process, determine whether needle point thrusts canalis spinalis, be to judge fully, and according to circumstances the degree of depth, direction are thrust in change, or withdraw from nook closing member and observe by doctor's experience, accuracy is relatively poor; 4, owing to the nook closing member top end opening, dark as if thrusting, canalis spinalis leading edge soft tissue can stop up the pin mouth, and it is unpunctual to judge, then wants repeated localised puncture, brings bigger misery to patient; 5, because the pin hole of syringe needle front end is an angle, nook closing member back stifled suitable for reading is the inclined-plane, and this inclined-plane is in piercing process, and it is oblique that puncture force is caused to a lateral deviation, can not make syringe needle be in center position, influences the inserting needle direction.

Summary of the invention

The purpose of this utility model is to provide a kind of above the deficiencies in the prior art that overcome, pass in the journey at waist, safe and reliable, easy grasp puncture direction can prevent that cerebrospinal fluid from spraying outward, can in time observe a kind of conehead shape of cerebrospinal pressure not have nook closing member pressure measurement lumbar puncture needle again.

For reaching above purpose, the technical scheme that this utility model adopted is: this conehead shape does not have nook closing member pressure measurement lumbar puncture needle, by needle tubing, needle stand, hand holding handle constitutes, needle tubing is fixed on the bottom side of needle stand, the end opening that it is characterized in that needle tubing is along being flat mouthful edge, on the wall on the end opening edge of needle tubing, establish symmetric two axial penetrating draw-in grooves, end opening at needle tubing is established conehead, on the edge of conehead, establish symmetric two axial card articles, two axial card articles on the conehead are stuck in the needle tubing end opening along in the corresponding axial penetrating draw-in groove on the wall, in two axial penetrating draw-in grooves, be equipped with bow-shaped shrapnel, the upper end of bow-shaped shrapnel is welded on the upper edge wall of axial penetrating draw-in groove, the lower end of bow-shaped shrapnel is welded on the upper end wall of the axial card article on the conehead, the outer edge of bow-shaped shrapnel is equal with the outer surface of needle tubing, when in piercing process, conehead is stressed, axial card article on the conehead is along moving on the axial penetrating draw-in groove on the needle tubing, the compression bow-shaped shrapnel, the last plane of conehead gets lodged in the end opening of needle tubing along last, simultaneously, axial card article on the conehead gets lodged in the axial penetrating draw-in groove on the needle tubing, after conehead enters canalis spinalis, conehead no longer is stressed, under the effect of bow-shaped shrapnel, make axial card article on the conehead along the axial penetrating draw-in groove on the needle tubing to lower slider, just form symmetric two through holes between two axial card articles on the conehead, at this moment, two axial penetrating draw-in grooves on the needle tubing also form through hole, like this, four through hole feed liquors can be arranged, cerebrospinal fluid is difficult for stopping up through hole, hand holding handle in the rotation of the upper end of needle stand, and make the upper port sealing of needle stand by sealing ring, on a sidewall of needle stand, establish the pressure measurement connection tube, connecting sealed pressure-measuring pipe on the pressure measurement connection tube, establish injection or drawing liquid connection tube at the opposite side of needle stand, on injection or drawing liquid connection tube, can connect medicine injecting device or liquid extracting device as required.This utility model is also implemented by following measure: described sealed pressure-measuring pipe is a lucite pipe, caliber is 2-5mm, length is 30-50mm, airtight slip vernier is housed in sealed pressure-measuring pipe, in the outer end of airtight slip vernier is gas compartment, on the outer wall of sealed pressure-measuring pipe, be provided with the force value indicating graduation, the inner of sealed pressure-measuring pipe is rotated on the pressure measurement connection tube, and sealing, when the conehead of puncture needle enters in the canalis spinalis, cerebrospinal pressure moves outward by promoting sealing slip vernier in the needle lumen, and the gas that Compressed Gas is indoor can directly be read force value on the wall of sealed pressure-measuring pipe; Be equipped with switch on the pressure measurement connection tube and on injection or the drawing liquid connection tube; The thickness of the axial card article on the described conehead is identical with the wall thickness of needle tubing, its width is identical with the width of axial penetrating draw-in groove, axially the outer arc surface of card article is greater than the inner arc surface, conehead is contacted with needle tubing closely, in can not producing, outer deflection, the width of bow-shaped shrapnel is identical with the wall thickness of needle tubing, length after the bow-shaped shrapnel compression is 1mm, length after the stretching, extension is 2mm, the length of the axial penetrating draw-in groove on the needle tubing is 3mm, the length of the axial card article on the conehead is 2mm, after conehead stretched out downwards, the distance between the last plane of the end opening of needle tubing edge and conehead was 1mm, forms the through hole of 1mm, axial card article on its conehead and the axial penetrating draw-in groove on the needle tubing also have the long contact surface of 1mm, make conehead can not break away from the end opening edge of needle tubing; Because the tip of conehead is in the center,, make the conehead tip can be not long from the distance of through hole so the waist that the tip height of conehead can be equivalent to use is at present bored puncture needle pin mouth chamfer length half.

The beneficial effects of the utility model are: compare with the lumbar puncture needle of present use, because the needle tip of syringe needle is the conehead shape, making puncture firmly can not produce deflection, and the aperture direction vertical needle tubular axis of through hole to, through hole can seal automatically in piercing process, after penetrating canalis spinalis, through hole can be opened automatically, and can in time observe cerebrospinal pressure, can in time aware puncture puts in place, can in time observe cerebrospinal pressure again, it is convenient, laborsaving that waist is worn, and improved safety and waist is worn speed.

Description of drawings

Fig. 1 looks enlarged diagram for this utility model structure master.

Fig. 2 analyses and observe enlarged diagram for this utility model along Figure 1A-A.

Fig. 3 overlooks enlarged diagram for this utility model conehead.

The specific embodiment

Make this utility model with reference to accompanying drawing 1,2,3.This conehead shape does not have nook closing member pressure measurement lumbar puncture needle, by needle tubing 1, needle stand 2, hand holding handle 3 constitutes, needle tubing 1 is fixed on the bottom side of needle stand 2, the end opening that it is characterized in that needle tubing 1 is along being flat mouthful edge, on the wall on the end opening edge of needle tubing 1, establish symmetric two axial penetrating draw-in grooves 4, establish conehead 5 at the end opening of needle tubing 1, on the edge of conehead 5, establish symmetric two axial card articles 6, two axial card articles 6 on the conehead 5 are stuck in needle tubing 1 end opening along in the corresponding axial penetrating draw-in groove 4 on the wall, in two axial penetrating draw-in grooves 4, be equipped with bow-shaped shrapnel 7, the upper end of bow-shaped shrapnel 7 is welded on the upper edge wall of axial penetrating draw-in groove 4, the lower end of bow-shaped shrapnel 7 is welded on the upper end wall of the axial card article 6 on the conehead 5, the outer edge of bow-shaped shrapnel 7 is equal with the outer surface of needle tubing 1, hand holding handle 3 in the rotation of the upper end of needle stand 2, and make the upper port sealing of needle stand 2 by sealing ring, on a sidewall of needle stand 2, establish pressure measurement connection tube 8, connecting sealed pressure-measuring pipe 9 on the pressure measurement connection tube 8, establish injection or drawing liquid connection tube 10 at the opposite side of needle stand 2; Described sealed pressure-measuring pipe 9 is a lucite pipe, caliber is 2-5mm, length is 30-50mm, airtight slip vernier 11 is housed in sealed pressure-measuring pipe 9, in the outer end of airtight slip vernier 11 is gas compartment, be provided with force value indicating graduation 12 on the outer wall of sealed pressure-measuring pipe 9, the inner of sealed pressure-measuring pipe 9 is rotated on the pressure measurement connection tube 8, and sealing; Be equipped with switch 13 on the pressure measurement connection tube 8 and on injection or the drawing liquid connection tube 10; The thickness of the axial card article 6 on the described conehead 5 is identical with the wall thickness of needle tubing 1, its width is identical with the width of axial penetrating draw-in groove 4, axially the outer arc surface of card article 6 is greater than the inner arc surface, conehead 5 is contacted with needle tubing 1 closely, in can not producing, outer deflection, the width of bow-shaped shrapnel 7 is identical with the wall thickness of needle tubing 1, length after bow-shaped shrapnel 7 compressions is 1mm, length after the stretching, extension is 2mm, the length of the axial penetrating draw-in groove 4 on the needle tubing 1 is 3mm, the length of the axial card article 6 on the conehead 5 is 2mm, after conehead 5 stretches out downwards, distance between the end opening edge of needle tubing 1 and the last plane of conehead 5 is 1mm, forms the through hole of 1mm, and axial card article 6 and the axial penetrating draw-in groove on the needle tubing 14 on its conehead 5 also have the long contact surface of 1mm; The waist that the tip height of conehead 5 can be equivalent to use is at present bored half of puncture needle pin mouth chamfer length.

Claims (3)

1, a kind of conehead shape does not have nook closing member pressure measurement lumbar puncture needle, by needle tubing (1), needle stand (2), hand holding handle (3) constitutes, needle tubing (1) is fixed on the bottom side of needle stand (2), the end opening that it is characterized in that needle tubing (1) is along being flat mouthful edge, on the wall on the end opening edge of needle tubing (1), establish symmetric two axial penetrating draw-in grooves (4), establish conehead (5) at the end opening of needle tubing (1), on the edge of conehead (5), establish symmetric two axial card articles (6), two axial card articles (6) on the conehead (5) are stuck in needle tubing (1) end opening along in the corresponding axial penetrating draw-in groove (4) on the wall, in two axial penetrating draw-in grooves (4), be equipped with bow-shaped shrapnel (7), the upper end of bow-shaped shrapnel (7) is welded on the upper edge wall of axial penetrating draw-in groove (4), the lower end of bow-shaped shrapnel (7) is welded on the upper end wall of the axial card article (6) on the conehead (5), go up hand holding handle (3) in the rotation of the upper end of needle stand (2), on a sidewall of needle stand (2), establish pressure measurement connection tube (8), on pressure measurement connection tube (8), connect sealed pressure-measuring pipe (9), establish injection or drawing liquid connection tube (10) at the opposite side of needle stand (2).

2, conehead shape according to claim 1 does not have nook closing member pressure measurement lumbar puncture needle, it is characterized in that described sealed pressure-measuring pipe (9) is a lucite pipe, caliber is 2-5mm, length is 30-50mm, airtight slip vernier (11) is housed in sealed pressure-measuring pipe (9), in the outer end of airtight slip vernier (11) is gas compartment, is provided with force value indicating graduation (12) on the outer wall of sealed pressure-measuring pipe (9), and the inner of sealed pressure-measuring pipe (9) is rotated on the pressure measurement connection tube (8).

3, conehead shape according to claim 1 does not have nook closing member pressure measurement lumbar puncture needle, it is characterized in that the thickness of the axial card article (6) on the described conehead (5) is identical with the wall thickness of needle tubing (1), and its width is identical with the width of axial penetrating draw-in groove (4); The width of bow-shaped shrapnel (7) is identical with the wall thickness of needle tubing (1).

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