CN201469869U - Puncture needle with movable needle tip - Google Patents

Abstract

The utility model relates to medical device field, in particular to a puncture needle with a movable needle tip, which comprises a sheath, a needle core and a needle handle, the needle core is fixed on the needle handle, the puncture needle is characterized in that the front end of the needle core is provided with a conical section needle tip with inclined end surface, the conical segment needle tip comprises an upper needle tip section and a lower inclined plane section, wherein the upper needle tip section is conical, the conical angle is less than the inclined angle of the lower inclined plane section, graduation is arranged on the external wall of the sheath, more than two circular guiding holes are arranged on the sheath wall of the front end of the sheath, when in use, part of the sheath with the guiding holes is completely immersed in liquid, and is not easy to have blockage due to the guiding holes; meanwhile, as the front end of the needle core in the sheath is provided with the conical section needle tip with the inclined plane end surface, the needle tip is easy to puncture into skin so that the operation difficulty of the medical staff and the pain of patient are reduced, the medical staff can intuitively know the puncture length through the graduation on the wall of the sheath; the puncture needle with the movable needle tip has reasonable structure, convenient use and is safe and reliable.

Description

A kind of puncture needle with detachable needle

Technical field:

This utility model relates to medical instruments field, specifically a kind of puncture needle with detachable needle.

Background technology:

Puncture needle is widely used in clinical treatment at present, as thoracentesis, abdominal paracentesis, joint puncture etc.The not too big difference of puncture needle and normal injection syringe needle, when inserting the radiology operation, can pass through lancet puncture skin, further guide the interventional radiology equipment, enter in the body as seal wire, conduit, filter, support etc., puncture needle mainly is divided into several kinds at present: the single wall puncture needle, make by rustless steel, can there be difform substrate on the sharp keen one-tenth of pin end inclined-plane, needle handle part, so that the advance and retreat of control pin during puncture.The two parts trocars are made of trocar sheath and nook closing member, and the three parts trocars are made up of trocar sheath, interior pin, occluder; The atrial septal puncture pin is two parts metals; The disposable use metal needle of peeling puncture needle, shank wall are that two halves butt joints forms, and after pin imports blood vessel into, directly conduit are sent into through pin without seal wire and to be pushed aside two halves shank wall then piecemeal, and withdraw from blood vessel fully, stay conduit.Yet the structure that existing puncture needle adopted all causes needle tubing to stop up when running into bulky grain or separating easily, causes the puncture mass ratio relatively poor, can't extract liquid etc., has strengthened operation of medical workers difficulty and patient's misery.

Summary of the invention:

This utility model proposes a kind of easy to use, rational in infrastructure, safe and reliable puncture needle for overcoming the deficiencies in the prior art.

The technical measures that this utility model adopts are:

A kind of puncture needle with detachable needle, comprise sleeve pipe, nook closing member and needle handle, nook closing member is fixed on the needle handle, it is characterized in that the nook closing member front end is provided with the conical section needle point of end slope, comprise needle point section and lower inclined plane section, last needle point section is conical, and its angle of taper is less than the angle of inclination of lower inclined plane section, sleeve outer wall is provided with scale, and sleeve pipe front end tube wall is provided with circular delivery hole more than two.

This utility model in use; will be in vivo with the complete submergence of the part that is provided with circular delivery hole; because the effect of the delivery hole that sleeve pipe front end tube wall is provided with; even run into bulky grain or barrier film; also be not easy to result in blockage; thereby guarantee to be easy to extract liquid; alleviate medical personnel's the workload and the misery of sufferer; in addition; because the front end of nook closing member is provided with the conical section needle point of end slope in the sleeve pipe; and the cone angle size of last needle point section is less than the angle of inclination of lower inclined plane section, when carrying out puncture procedure, and the easier skin that thrusts of syringe needle; further reduced operation of medical workers difficulty and patient's misery; simultaneously, the metering scale that sleeve outer wall is provided with can make medical personnel conveniently get information about the length of thrusting, and the utlity model has rational in infrastructure; easy to use; significant advantage such as safe and reliable grade.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model.

Accompanying drawing 2 is structural representations of conical section needle point on this utility model nook closing member.

Reference numeral: sleeve pipe 1, nook closing member 2, needle handle 3, scale 4, last needle point section 5, lower inclined plane section 6, delivery hole 7.

The specific embodiment:

A kind of puncture needle with detachable needle; comprise sleeve pipe 1; nook closing member 2 and needle handle 3; nook closing member 2 is fixed on the needle handle 3; it is characterized in that nook closing member 2 front ends are provided with the conical section needle point of end slope; comprise needle point section 5 and lower inclined plane section 6; last needle point section is conical; its angle of taper is less than the angle of inclination of lower inclined plane section 6; sleeve pipe 1 outer wall is provided with scale 4; sleeve pipe 1 front end tube wall is provided with circular delivery hole 7 more than two; this utility model in use; the complete submergence of part that sleeve pipe 1 will be provided with circular delivery hole 7 in vivo; because the effect of the delivery hole 7 that sleeve pipe 1 front end tube wall is provided with; even run into bulky grain or barrier film; also be not easy to result in blockage; thereby guarantee to be easy to extract liquid; alleviate medical personnel's the workload and the misery of sufferer; in addition; because the front end of nook closing member 2 is provided with the conical section needle point of end slope in the sleeve pipe 1; and the cone angle size of last needle point section 5 is less than the angle of inclination of lower inclined plane section 6; when carrying out puncture procedure; the easier skin that thrusts of syringe needle; further reduced operation of medical workers difficulty and patient's misery; simultaneously; the metering scale 4 that sleeve pipe 1 outer wall is provided with can make medical personnel conveniently get information about the length of thrusting, and the utlity model has rational in infrastructure; easy to use; significant advantage such as safe and reliable grade.

Claims (1)

1.

A kind of puncture needle with detachable needle, comprise sleeve pipe, nook closing member and needle handle, nook closing member is fixed on the needle handle, it is characterized in that the nook closing member front end is provided with the conical section needle point of end slope, comprise needle point section and lower inclined plane section, last needle point section is conical, and its angle of taper is less than the angle of inclination of lower inclined plane section, sleeve outer wall is provided with scale, and sleeve pipe front end tube wall is provided with circular delivery hole more than two.

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