CN2245986Y

CN2245986Y - Medical deep portion intravenous insertion needle

Info

Publication number: CN2245986Y
Application number: CN 96202028
Authority: CN
Inventors: 赵素贞; 张立; 孟凡民; 宋祖慧
Original assignee: Henan Provincial Peoples Hospital
Current assignee: Henan Provincial Peoples Hospital
Priority date: 1996-02-08
Filing date: 1996-02-08
Publication date: 1997-01-29
Anticipated expiration: 2006-02-08

Abstract

The utility model provides a medical deep portion vein insertion needle which is used for infusion and monitoring for a patient's jugular veins, subclavian veins, and femoral veins. The utility model is formed by that an extending tube is additionally arranged on the basis of a puncture appliance which uses a guide wire method. The utility model is characterized in that spring guide wires are arranged in a puncture needle in a penetration manner; the extending tube which is arranged in an outer sleeve tube is sheathed on the spring guide wires; the outer sleeve tube is arranged in blood vessels along the guide wires; as a result, the diameter of a guide tube is enlarged to the greatest extent; the outer sleeve tube has scales. The length of the outer sleeve tube can be determined according to requirements, which not only is favorable to infusion and monitoring for veins, but also is convenient for long-term preservation. As a result, puncture safety is enhanced by the method. The utility model has the advantages of simple structure, convenient use, and high success rate for puncturing a placing tube.

Description

Medical deep vein cover contact pin

This reality is novel to relate to a kind of medical apparatus and instruments, particularly a kind of medical deep vein cover contact pin, and it can be used for patient's internal jugular vein, subclavian vein, femoral venous infusion and monitoring also help staying for a long time pipe.

Be used for dark venous Centesis instrument at present both at home and abroad and have three kinds: (1) metal puncture pin.It is after puncturing successfully, inserts conduit by the puncture needle endoporus, and this method is too thick because of puncture needle, and allows the conduit of inserting thinner, brings many inconvenience to treatment, seldom uses at present.(2) trocar is to be made of metal nook closing member and trocar sheath, and it is after puncturing successfully, trocar sheath is sent into blood vessel, and puncture needle and trocar sheath thrust blood vessel simultaneously, wound is bigger, the method is suitable for peripheral vein, and the deep venipuncture is just existed the shortcoming of using inconvenience.(3) seal wire method Centesis instrument, the puncture needle of this method is often thicker, causes accident or complication when inserting easily in that patient is visited repeatedly.Limited because of the expansion ratio of inserting conduit again, and the degree of depth that conduit is inserted is unmarked, in clinical use, especially for infant inconvenience is arranged.

The purpose of this utility model is a kind of medical deep vein cover contact pin of developing at above deficiency, and it is to have set up convergent divergent channel on the basis of seal wire method Centesis instrument, inserts the diameter of conduit with expansion.It is that convergent divergent channel is contained in the trocar sheath, inserts blood vessel along seal wire, enlarges conduit diameter to greatest extent, is beneficial to transfusion and pressure measurement.Scale is arranged on the trocar sheath.Can get as required and stay length, also help venoclysis and monitoring, be convenient to stay for a long time pipe, the method to improve the safety of puncture.

This utility model is achieved in that medical deep vein cover contact pin, comprises puncture needle 1, spring-guide wire 2, trocar sheath 4 and convergent divergent channel 3, and wherein, spring-guide wire 2 is installed in the puncture needle 1, and trocar sheath 4 built-in convergent divergent channels 3 are sleeved on the spring-guide wire 2.

This utility model also can be achieved in that scale 5 on the trocar sheath 4.

Good effect of the present utility model is:

1, puncture needle of the present utility model is thinner, and it can reduce tissue injury, reduces the danger of puncture.

2, this utility model infant and puncture difficult patient thinner to blood vessel, puncture and intubation success rate height.

3, often be accompanied by large artery trunks or important organ around the vein of deep, of the present utility model rational in infrastructure, reliable, can reduce and accidentally injure the surrounding tissue organ pipe, to reduce complication.

4,, not only enlarge the trocar sheath diameter and help transfusion fast and venous pressure monitoring, but also avoided puncture needle to enclose oozing of blood near the eyes owing to the effect of this utility model convergent divergent channel.

5, on the trocar sheath of the present utility model scale is arranged, be convenient to understand the depth of putting pipe.

6, this utility model is through clinical practice 205 examples, success rate 100%, and no complication takes place, and is safe and convenient.

Description of drawings.

Fig. 1 is a shape and structure cutaway view of the present utility model.

Fig. 2 is the shape sketch map of this utility model puncture needle.

Fig. 3 is the shape sketch map of this utility model spring-guide wire.

Fig. 4 is the shape sketch map of this utility model convergent divergent channel.

Fig. 5 be this utility model trocar sheath the shape sketch map.

Fig. 6 is the user mode sketch map of this utility model spring-guide wire and puncture needle.

Fig. 7 is the user mode sketch map of this utility model trocar sheath and convergent divergent channel.

Fig. 8 is a user mode sketch map of the present utility model.

Wherein:

1, puncture needle 2, spring-guide wire 3, convergent divergent channel 4, trocar sheath 5, scale

The utility model is described in further detail below in conjunction with accompanying drawing.

Clinically to critical patient's rescue, special operation and anesthesia, intravenous hyperalimentation or the like all needs one can keep for a long time, can react the infusion channel of deep vein pressure.Unobstructed venous access provides assurance for clinical treatment, and the deep venipuncture has become common clinically operation.Cover contact pin of the present utility model can reduce tissue injury to greatest extent, enlarges the indwelling tube passage, the puncture success rate height.

As Fig. 1,2,3,4,5, shown in.The internal diameter of puncture needle 1 of the present utility model is 0.6mm, and external diameter is that 0.9mm is the thin-walled smooth type, is applicable to the metal needle than the puncture of position, deep.The diameter of spring-guide wire 2 is 0.5mm, and its front end is pliable and tough to be pure round, can be by the endoporus of puncture needle.Convergent divergent channel 3 is that internal diameter is 0.55mm, and external diameter is the rigid plastics goods of 1mm, its wall thickness, and inner chamber is little, and front end is sharp slightly, is beneficial to play dilating effect by skin and blood vessel wall.Trocar sheath 4 is that internal diameter is 1.1 mm, and external diameter is the flexible plastic goods of 1.6mm, and its wall is thin, the chamber is big, pliable and tough, and the front end tube wall is slim, is close to convergent divergent channel 3, when convergent divergent channel 3 during by blood vessel wall, and intravasation thereupon.Scale 5 on the trocar sheath 4 can be pointed out medical personnel, and the trocar sheath 4 of this moment enters intravital length.

Shown in Fig. 1,6,7,8.The method of manipulating of the present utility model is: at first in drafting site of puncture sterilization, drape, puncture needle 1 is connected on the syringe of 5ml.At puncture place inserting needle, after puncture needle 1 thrust skin, the pumpback syringe flowed out as blood is arranged in the syringe, proves and punctures successfully, unloads syringe.Then spring-guide wire 2 is pierced into puncture needle 1 and exceed the front end 3-5cm of puncture needle 1, withdraw from puncture needle 1.Trocar sheath 4 built-in convergent divergent channels 3 are sleeved on the spring-guide wire 2, and send into blood vessel along spring-guide wire 2.Withdraw from spring-guide wire 2 and convergent divergent channel 3 behind trocar sheath 4 intravasations, trocar sheath 4 is kept somewhere in vivo.According to patient's situation, fixed jacket pipe 4 is in desired depth.Look the state of an illness on the needle stand of trocar sheath 4 or connect transfusion device, or connect pressure-measuring pipe and get final product.

Claims

1, a kind of medical deep vein cover contact pin, comprise puncture needle (1), spring-guide wire (2), trocar sheath (4) and convergent divergent channel (3) is characterized in that, bomb tube seal wire (2) is installed in the puncture needle (1), and the built-in convergent divergent channel of trocar sheath (4) (3) is sleeved on the spring-guide wire (2).

2, medical deep according to claim 1 vein cover contact pin is characterized in that: scale (5) is arranged on the trocar sheath (4).