CN201642045U - Dual-head chamfering anti-clogging penholder type blood taking needle - Google Patents

Abstract

The utility model discloses a dual-head chamfering anti-clogging penholder type blood taking needle which comprises a puncture needle, a needle stand, a bottle inserting needle, a bottle inserting needle blood-stop sheath, a puncture needle sleeve and a bottle inserting needle sleeve, wherein the puncture needle and the bottle inserting needle form an integrated needle tube. The penholder type blood taking needle is characterized in that left and right side edges are processed on the left and the right side walls of the puncture needle point and the bottle inserting needle point, so as to form chamfer, so that the puncture needle point takes the shape of a pointed head with a front plane surface, a left plane surface, a right plane surface and a circular arc-shaped back; and the thickness of the side wall at the top of the needle cavity of the bottle inserting needle blood-stop sheath is thickened. Besides the advantages of the conventional blood taking needle, the penholder type blood taking needle also improves the sharpness of the puncture needle point, alleviates the pain of patients, improve the success rate of puncture, reduces wound of the bottle inserting needle blood-stop sheath, ensures the leak tightness of the bottle inserting needle blood-stop sheath, effectively prevents the needle hole from being clogged by chips generated when the bottle inserting needle penetrates into a vacuum blood taking tube, and has the advantages of high efficiency, high leak tightness, repercussion prevention, and good safety.

Description

Double end chamfering blockage resisting pen type blood taking needle

Technical field

This utility model relates to medical apparatus, especially relates to a kind of double end chamfering blockage resisting pen type blood taking needle that is used for the venipuncture blood sampling.

Background technology

Blood taking needle is a kind of medical apparatus commonly used, it is by puncture needle, needle stand, needle for inserting bottle, needle for inserting bottle resistance blood sheath, puncture needle sleeve and needle for inserting bottle sleeve are formed, puncture needle and needle for inserting bottle constitute incorporate needle body, have the side opening that in the shortest time, can see blood back at the middle part of needle body, needle stand is transparent, there is following shortcoming in this kind blood taking needle: 1, the puncture needle needle point of puncture needle is to carry out the sharp shape that oblique grinding forms in the front, but because the back of puncture needle needle point and about two sidewalls still be circular-arc, about two sidewall edge make the puncture needle needle point still sharp inadequately because of grinding, when medical personnel use puncture needle to carry out venipuncture, can bring violent pain to patient; 2, the needle for inserting bottle needle point of needle for inserting bottle also is to carry out the sharp shape that oblique grinding forms in the front, but because the back of needle for inserting bottle needle point and about two sidewalls still be circular-arc, about two sidewall edge make the needle for inserting bottle needle point still sharp inadequately because of grinding, thereby needle for inserting bottle can stop up pin hole because of producing the bits end when thrusting the bottle stopper of vacuum test tube, cause thrombosis, the influence blood sampling; 3, through a large amount of experimental verifications and clinical investigation, the needle for inserting bottle of unmodified thickening resistance blood sheath, self sealss are poor, the time regular meeting produce the seepage phenomenon, and have " bomb tube " phenomenon, have a strong impact on the blood specimen collection quality, easily pollute blood sample.

Summary of the invention

The purpose of this utility model is to provide a kind of sharpness that can improve the puncture needle needle point, alleviate patient's pain, stop up pin hole, have efficient self sealss and prevent rebound effect, the double end chamfering blockage resisting pen type blood taking needle that safety is good because of producing the bits end when preventing effectively that needle for inserting bottle from thrusting vacuum test tube.

The purpose of this utility model is achieved in that this utility model is by needle for inserting bottle sleeve, needle for inserting bottle resistance blood sheath, needle for inserting bottle, needle stand, puncture needle and puncture needle sleeve with form, needle for inserting bottle and puncture needle constitute incorporate needle tubing, and needle stand is fixed on the middle part sidewall of needle tubing; Be used to protect the needle for inserting bottle resistance blood sheath of needle for inserting bottle to be connected, on the cylinder on needle stand the right, be processed with several fins perpendicular to column side wall with the spiral basilar part on the needle stand left side of needle for inserting bottle outer end root; The internal diameter of puncture needle sleeve left end and the external diameter of several fins on the needle stand adapt, the external diameter of the internal diameter of needle for inserting bottle sleeve right-hand member and puncture needle sleeve left end adapts, make needle for inserting bottle sleeve and puncture needle sleeve fasten mutually, needle for inserting bottle sleeve and puncture needle sleeve are by fixing needle for inserting bottle needle stand, needle stand and puncture needle are fixed on the sleeve intracavity, feature is that the left side wall and the right side wall of the puncture needle needle point of puncture needle grinds to form narrow limit, left side and narrow right edge respectively, makes the puncture needle needle point be the front, the left side and the right are the plane, the back is the tip shape of circular arc.

The left side wall of the needle for inserting bottle needle point of needle for inserting bottle and right side wall grind to form narrow limit, left side and narrow right edge respectively, make the needle for inserting bottle needle point be that front, the left side and the right are the plane, the back is the tip shape of circular arc.

The limit, left side and the angle between the right edge of needle for inserting bottle needle point are the 10--40 degree; The limit, left side and the angle between the right edge of puncture needle needle point are the 10--40 degree.

Needle for inserting bottle being hindered the vertical sheath sidewall thickness in pin chamber of blood sheath thickeies, the sheath sidewall thickness is thickeied 0.025--0.04mm by the 0.02mm of routine, make needle for inserting bottle hinder the effect that the blood sheath has efficient self sealss and prevents to rebound, thereby improve medical personnel's safety.

This utility model is except that the pin with conventional blood taking needle punctures, repeatedly takes a blood sample, takes a blood sample is quick, the patient suffering is few, the handling ease, low cost and other advantages, also have following advantage:

1, this utility model is on the basis of conventional puncture needle, adopt advanced pinpoint rubbing technique, the left and right sidewall of the circular arc of puncture needle needle point is ground to form plane left and right side respectively, form chamfering, make the puncture needle needle point be front, the left side, the right and be tip shape plane, that the back is circular arc, thereby improved the sharpness of puncture needle needle point, alleviated patient's pain, improved puncture success rate;

2, this utility model is on the basis of conventional puncture needle, adopt advanced pinpoint rubbing technique, the left and right sidewall of the circular arc of needle for inserting bottle needle point is ground to form plane left and right side respectively, make the needle for inserting bottle needle point be front, the left side, the right and be tip shape plane, that the back is circular arc, when the needle for inserting bottle needle point when puncturing needle for inserting bottle resistance blood sheath, can reduce the wound of needle for inserting bottle needle point cutting needle for inserting bottle resistance blood sheath, also can avoid needle point to stab the protective sleeve side, thereby guarantee the sealing of needle for inserting bottle resistance blood sheath, improve medical personnel's safety; And the needle for inserting bottle needle point can also guarantee to reduce penetration Resistance when thrusting the bottle stopper of vacuum test tube, reduces the generation at bits end, stops up pin hole thereby prevent to consider to be worth doing the end effectively;

3, the vertical sheath sidewall thickness in pin chamber of thickening needle for inserting bottle resistance blood sheath makes the thickening needle for inserting bottle hinder the effect that the blood sheath has efficient self sealss and prevents to rebound, and improves medical personnel's safety.

Description of drawings

Fig. 1 is a cutaway view of the present utility model;

Fig. 2 is the front enlarged diagram of the puncture needle needle point of a-quadrant among Fig. 1;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the right view of Fig. 2;

Fig. 5 is the front schematic view of the needle for inserting bottle needle point in B zone among Fig. 1;

Fig. 6 is the left view of Fig. 5;

Fig. 7 is the right view of Fig. 5;

Fig. 8 is the cutaway view Amplified image of needle for inserting bottle resistance blood sheath.

The specific embodiment

Below in conjunction with embodiment and contrast accompanying drawing this utility model is described in further detail.

This utility model hinders blood sheath 2, needle for inserting bottle 4, needle stand 6, puncture needle 8 and puncture needle sleeve 9 by needle for inserting bottle sleeve 1, needle for inserting bottle and forms, and needle for inserting bottle 4 and puncture needle 8 constitute incorporate needle tubing 12, and needle stand 6 is fixed on the middle part sidewall of needle tubing 12; Be used to protect the needle for inserting bottle resistance blood sheath 2 of needle for inserting bottle 4 to be connected, on the cylinder 11 on needle stand 6 the right, be processed with several fins 7 perpendicular to cylinder 11 sidewalls with spiral base 5 bottoms on needle stand 6 left sides of needle for inserting bottle 4 outer end roots; The internal diameter of puncture needle sleeve 9 left ends and the external diameter of several fins 7 on the needle stand 6 adapt, the external diameter of the internal diameter of needle for inserting bottle sleeve 1 right-hand member and puncture needle sleeve 9 left ends adapts, make needle for inserting bottle sleeve 1 and puncture needle sleeve 9 fasten mutually, needle for inserting bottle sleeve 1 and puncture needle sleeve 9 are by fixing needle for inserting bottle 4 needle stand 6, needle stand 6 and puncture needle 8 are fixed in the sleeve chamber 13, the left side wall of the puncture needle needle point 10 of puncture needle 8 and right side wall grind to form narrow limit, left side 14 and narrow right edge 15 respectively, make puncture needle needle point 10 be the front, the left side and the right are the plane, the back is the tip shape of circular arc.

The left side wall of the needle for inserting bottle needle point 3 of needle for inserting bottle 4 and right side wall grind to form narrow limit, left side 16 and narrow right edge 17 respectively, make needle for inserting bottle needle point 3 be that front, the left side and the right are the plane, the back is the tip shape of circular arc.

The limit, left side 14 and the angle α between the right edge 15 of puncture needle needle point 10 are the 10--40 degree; The limit, left side 16 and the angle β between the right edge 17 of needle for inserting bottle needle point 3 are the 10--40 degree.

The pin chamber 18 vertical sheath sidewall thickness d that needle for inserting bottle hindered blood sheath 2 thicken, and sheath sidewall thickness d thickeies 0.025--0.04mm by the 0.02mm of routine.

Operation principle:

This utility model in use, needle for inserting bottle is hindered blood sheath 2 to be screwed with spiral base 5 bottoms of the needle stand 6 of needle for inserting bottle 4 outer end roots and is connected, take off puncture needle sleeve 9, by the venipuncture routine, hospital protects personnel and pricks tourniquet at patient's blood sampling site epimere, in partly sterilised of blood sampling portion, hand-held then blood taking tube sheath, puncture needle 8 is thrust in skin and the venae subcutaneae blood vessel, in case puncture successfully, blood will follow needle tubing 12 and reflux.At this moment, get vacuum test tube, its rubber stopper one end is inserted in the blood taking tube sheath, firmly upwards push away, the rubber stopper that needle for inserting bottle 4 is punctured on needle for inserting bottle resistance blood sheath 2 and the vacuum test tube enters vacuum test tube, and venous blood flows in the vacuum test tube under the attraction of negative pressure of vacuum, to specified volume, because the disappearance of negative pressure, venous blood stop to reflux, blood sampling finishes.Pull out puncture needle 8, hemostasis is pushed in the local skin sterilization.

Claims (4)

1. double end chamfering blockage resisting pen type blood taking needle, by needle for inserting bottle sleeve (1), needle for inserting bottle resistance blood sheath (2), needle for inserting bottle (4), needle stand (6), puncture needle (8) and puncture needle sleeve (9) with form, needle for inserting bottle (4) and puncture needle (8) constitute incorporate needle tubing (12), and needle stand (6) is fixed on the middle part sidewall of needle tubing (12); Be used to protect the needle for inserting bottle resistance blood sheath (2) of needle for inserting bottle (4) to be connected, on the cylinder (11) on needle stand (6) the right, be processed with several fins (7) perpendicular to cylinder (11) sidewall with spiral base (5) bottom on needle stand (6) left side of needle for inserting bottle (4) outer end root; The internal diameter of puncture needle sleeve (9) left end and the external diameter of several fins (7) on the needle stand (6) adapt, the external diameter of the internal diameter of needle for inserting bottle sleeve (1) right-hand member and puncture needle sleeve (9) left end adapts, make needle for inserting bottle sleeve (1) and puncture needle sleeve (9) fasten mutually, needle for inserting bottle sleeve (1) and puncture needle sleeve (9) are by fixing needle for inserting bottle (4) needle stand (6), needle stand (6) and puncture needle (8) are fixed in the sleeve chamber (13), it is characterized in that: the left side wall of the puncture needle needle point (10) of puncture needle (8) and right side wall grind to form narrow limit, left side (14) and narrow right edge (15) respectively, make puncture needle needle point (10) be the front, the left side and the right are the plane, the back is the tip shape of circular arc.

2. double end chamfering blockage resisting pen type blood taking needle as claimed in claim 1, it is characterized in that: the left side wall of the needle for inserting bottle needle point (3) of needle for inserting bottle (4) and right side wall grind to form narrow limit, left side (16) and narrow right edge (17) respectively, make needle for inserting bottle needle point (3) be that front, the left side and the right are the plane, the back is the tip shape of circular arc.

3. double end chamfering blockage resisting pen type blood taking needle as claimed in claim 2 is characterized in that: the limit, left side (14) of puncture needle needle point (10) and the angle α between the right edge (15) are the 10--40 degree; The limit, left side (16) of needle for inserting bottle needle point (3) and the angle β between the right edge (17) are the 10--40 degree.

4. double end chamfering blockage resisting pen type blood taking needle as claimed in claim 1 or 2 is characterized in that: pin chamber (18) the vertical sheath sidewall thickness d that needle for inserting bottle is hindered blood sheath (2) is 0.025--0.04mm.

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