CN205903294U

CN205903294U - Bore dark vein pjncture needle of sharp formula

Info

Publication number: CN205903294U
Application number: CN201620504627.5U
Authority: CN
Inventors: 罗和国; 蔺琳
Original assignee: Wuyishan Jiean Medical Devices Manufacturing Co Ltd
Current assignee: Wuyishan Jiean Medical Devices Manufacturing Co Ltd
Priority date: 2016-05-27
Filing date: 2016-05-27
Publication date: 2017-01-25
Anticipated expiration: 2026-05-27

Abstract

The utility model discloses a bore dark vein pjncture needle of sharp formula, including core needle and outer trocar, the core needle comprises 5 an organic wholes at core needle connector 1, hollow core needle needle body 2 and the sharp formula needle point of closed awl, and the sharp formula needle point position of nearly awl of core needle needle body is provided with core needle aperture 4, outer trocar comprises 8 an organic wholes of outer trocar connector 7, cover needle body 3 and needle tip, and the nearly needle tip department of cover needle body is provided with trocar aperture 6, and the needle tip is provided with cyclic annular inclined plane, and the core needle passes through core needle connector 1 and outer trocar connector 7 swing joint with outer trocar. The utility model discloses a needle tip of outer trocar makes up into awl point form with the needle point of core needle, fluid passage core needle aperture and the business turn over of trocar aperture, and the cut is little when puncturing when carrying out the puncture of dark vein. The cover needle body of outer trocar and core needle needle body slidable, the mistake can not lead to the fact big cut after wearing pleura or artery, has avoided gas leakage and has leaked blood, significantly reduces to patient's damage.

Description

Cone formula deep vein puncture needle

Technical field

The utility model is related to a kind of deep vein puncture needle, more particularly to a kind of cone formula deep vein puncture needle.

Background technology

At present, the pin diameter being clinically used for deep vein puncture is thicker, if thus wear pleura when puncturing and cause gas by mistake Its consequence of chest is serious, can cause serious pneumothorax, lead to patient respiration difficult or even dead.If arteriae perforantes leads to neck hemotoncus by mistake, Impact brain blood supply and compressing air flue, severe patient may also lead to the death of patient.

China Patent No. zlcn200820179450.1 discloses one kind and can try deep vein puncture needle on, and it is by one No. 18 Bodkin and a No. 24 fine needles composition, wherein fine needle is enclosed within bodkin, and the tip of fine needle is exposed at the most advanced and sophisticated outer of bodkin needle point 1.5cm, the other end of two pins is connecting portion, is connected with the connecting portion of injector syringe.This can be tried deep vein puncture needle on and use The fine needle that Shi Xianjing is enclosed within inside bodkin is tried on, after pumpback of threading a needle has blood, will be enclosed within bodkin outside fine needle along fine needle side Slide forward and flush with the needle point of fine needle, fine needle is extracted out, bodkin is enclosed within syringe and adjusts after paracentesis depth pumpback has blood and is Can, this utility model can reduce the generation of severe complication such as haemopneumothorax, hemotoncus caused by traditional deep vein puncture needle.

But above-mentioned utility model exists not enough as follows: the needle point of first fine needle and bodkin is all as regular injection syringe needle There is an inclined-plane, when fine needle is enclosed within bodkin, total inclined-plane area of two syringe needles is larger, the site of puncture to patient when puncturing Tissue produce certain damage, it two is to there is an annular space between the outer surface of fine needle and the inner surface of bodkin, in puncture procedure Shi Yi leaks air and leaks the generation of blood phenomenon.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of cone formula deep vein puncture needle.

The technical solution of the utility model is summarized as follows:

Cone formula deep vein puncture needle, including core needle and outer casing needle, described core needle is by the core needle of core needle connector 1, hollow Cone formula needle point 5 one of needle body 2 and closure forms, and is provided with core needle aperture 4 at the nearly cone formula needle point of core needle needle body；Described Outer casing needle is integrally made up of outer casing needle connector 7, set needle body 3 and needle end part 8, is provided with trocar little at the nearly needle end part of set needle body Hole 6, needle end part is provided with annular chamfer, the angle angle of annular chamfer and set needle body center line and cone formula pinpoint inclined plane and core The angle angle of pin needle body center line is identical, and core needle and outer casing needle are connected by core needle connector 1 and outer casing needle connector 7 activity Connect, so that the inner surface of the set needle body of outer casing needle is contacted with the outer surface of core needle needle body and core needle needle body can be made sliding in trocar body Dynamic.

Advantage of the present utility model:

Cone formula deep vein puncture needle of the present utility model, core needle people's needle point does not have hole, in the cone formula of closure, outer casing needle After being enclosed within core needle, the needle end part of outer casing needle and the needle point of core needle are also combined into cone tip shape, and liquid passes through core needle aperture and trocar is little Hole passes in and out, and when puncturing when carrying out deep vein puncture, cut is little.The inner surface of set needle body of outer casing needle and the appearance of core needle needle body Face contact and slidably, does not result in big cut, it is to avoid gas leakage and leakage blood, the damage to patient by mistake after wearing pleura or artery Greatly reduce.

Brief description

Fig. 1 is cone formula deep vein puncture needle core needle schematic diagram.

Fig. 2 is cone formula deep vein puncture needle outer casing needle schematic diagram.

Fig. 3 is core needle and outer casing needle passes through core needle connector and outer casing needle connector connection diagram.

Fig. 4 is core needle and outer casing needle partial cutaway schematic.

Specific embodiment

Below in conjunction with the accompanying drawings the utility model is further described.

Cone formula deep vein puncture needle, including core needle and outer casing needle, core needle is by the core needle needle body 2 of core needle connector 1, hollow Form with cone formula needle point 5 one of closure, at the nearly cone formula needle point of core needle needle body, be provided with core needle aperture 4；Outer casing needle by Outer casing needle connector 7, set needle body 3 and needle end part 8 one form, and are provided with trocar aperture 6, pin end at the nearly needle end part of set needle body Portion is provided with annular chamfer, in the angle angle and cone formula pinpoint inclined plane and core needle needle body of annular chamfer and set needle body center line The angle angle of heart line is identical, and core needle and outer casing needle are flexibly connected by core needle connector 1 and outer casing needle connector 7, make overcoat The inner surface of the set needle body of pin is contacted with the outer surface of core needle needle body and core needle needle body can be made to slide in trocar body.

Core needle connector 1 can be connected with the connecting portion of the syringe of syringe with outer casing needle connector 7.

Use:

First core needle and outer casing needle are connected by core needle connector and outer casing needle connector and be connected with injector syringe, core Pin aperture is relative with trocar aperture, carries out deep vein puncture and tries on, penetrates after Deep venou blood back after core needle, will be enclosed within outside core needle Outer casing needle slide forward along core needle and concordant with the needle point of core needle, core needle is extracted out, outer casing needle is connected with injector syringe After regulation paracentesis depth pumpback has blood afterwards.

Claims

1. cone formula deep vein puncture needle, including core needle and outer casing needle, it is characterized in that described core needle by core needle connector (1), in Cone formula needle point (5) one of empty core needle needle body (2) and closure forms, and is provided with core at the nearly cone formula needle point of core needle needle body Pin aperture (4)；Described outer casing needle is made up of outer casing needle connector (7), set needle body (3) and needle end part (8) one, covers the near of needle body It is provided with trocar aperture (6), needle end part is provided with annular chamfer, the angle angle of annular chamfer and set needle body center line at needle end part Degree is identical with the angle angle of cone formula pinpoint inclined plane and core needle needle body center line, and core needle and outer casing needle pass through core needle connector (1) with outer casing needle connector (7) be flexibly connected, make outer casing needle set needle body inner surface contact with the outer surface of core needle needle body and Core needle needle body can be made to slide in trocar body.