CN203139256U

CN203139256U - Novel deep vein puncture remaining needle

Info

Publication number: CN203139256U
Application number: CN 201320166770
Authority: CN
Inventors: 王科
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-03
Filing date: 2013-04-03
Publication date: 2013-08-21
Anticipated expiration: 2023-04-03

Abstract

The utility model discloses a novel deep vein puncture remaining needle which comprises a puncture needle and a casing pipe sleeved at the outer side of the puncture needle. The inner wall of the casing pipe is attached to the outer wall of the puncture needle. The casing pipe comprises a soft remaining guiding pipe and a casing pipe seat, wherein the soft remaining guiding pipe and the casing pipe seat are fixedly connected. The soft remaining guiding pipe is pushed into the deep vein in the direction of the puncture needle and then a guiding steel wire is placed in the deep vein through the casing pipe, so that the condition that the steel wire is usually difficult to place when the puncture needle is fixed manually is avoided. A backflow-resistant valve is additionally arranged in a port of the tail portion of the casing pipe and used for preventing the deep vein blood from flowing back and air from entering the deep vein. In addition, an infusion pipe can be directly connected for fluid infusion in emergencies. The novel deep vein puncture remaining needle is high in application safety coefficient, capable of facilitating puncture, reducing emergencies and the hazard rate of the puncture and facilitating successful completion of the puncture process and good in practicality.

Description

Novel deep vein puncture remaining needle

Technical field

This utility model relates to medical instruments field, especially relates to a kind of novel deep vein puncture remaining needle.

Background technology

Along with the develop rapidly of Medical Technology, the deep vein puncture technology has been widely used in clinical at present, can transfuse blood fast, transfusion, central venous pressure monitoring, placement float catheter etc.Deep vein puncture is to thrust in internal jugular vein, subclavian vein or the femoral vein with a thicker puncture needle at present, extract a small amount of venous blood to determine venous locations, venous blood occurs and can judge that then puncture needle has entered in the vein, need this moment artificially with hands puncture needle to be fixed, and then guide wire inserted in the dark vein by puncture needle, extract puncture needle, dark venous duct is enclosed within on the steel wire sends in the vein.Because the site of puncture is comparatively complicated in the human body location, even puncture needle has been found venous locations accurately, but under situations such as some position changes, urgent rescue, puncture needle is understood frequent occurrence positions and is moved during artificial fixedly puncture needle, occur puncturing vein easily or stab other surrounding tissue equivalent damage phenomenons, cause guide wire to be difficult to insert and cause the puncture difficulty.

And some present trocar bases are open state, need the people for pressing after puncture finishes, if deal with improperly, venous blood may flow out external or air enters in the vein, and patient's life is caused danger.

The utility model content

The purpose of this utility model is to overcome the defective of prior art, a kind of novel deep vein puncture remaining needle is provided, it can avoid going artificially fixedly puncture needle, overcome steel wire and insert situation of difficult, prevent the backflow of venous blood and entering of air, reduce the risk that urgent emergency situations takes place, reduced the mortality of puncture, be conducive to finishing smoothly of piercing process.

For achieving the above object, the utility model proposes following technical scheme: a kind of novel deep vein puncture remaining needle, it comprises puncture needle, the Paracentesis needle holder of fixedlying connected with puncture needle, the inner chamber of described Paracentesis needle holder communicates with puncture needle, described deep vein puncture remaining needle also comprises the sleeve pipe that is nested with in the puncture needle outside, described internal surface of sleeve pipe and puncture needle outer wall fit, and described sleeve pipe afterbody is provided with first interface that is connected with puncture needle, set up the flap valve of anti-adverse current in described first interface.

Preferably, described sleeve pipe comprises fixedly connected soft inlying catheter and casing seat, and described puncture needle passes flap valve and passes through the inlying catheter passage, and described puncture needle syringe needle is longer than the inlying catheter tube head.

The top is the plane on the described indwelling casing tube tube head.

The described syringe needle of threading a needle is nib type, is in order to reduce the cross-sectional area of puncture needle medicated pillow, thereby has reduced the probability that the puncture needle syringe needle is accidentally injured tremulous pulse, has guaranteed patient safety.

Described Paracentesis needle holder one end is provided with second interface that connects syringe.

The beneficial effect of novel deep vein puncture remaining needle of the present utility model is:

(1) sets up sleeve pipe in the puncture needle outside, be used for after puncture needle penetrates vein, direction along puncture needle directly pushes the soft inlying catheter of sleeve pipe in the vein, avoid going artificially fixedly puncture needle, reduce the generation probability that the puncture needle occurrence positions moved, punctured tremulous pulse or stabs situation such as other surrounding tissues, improved safety and the puncture accuracy of piercing process; And in case of emergency can directly carry out fluid infusion by inlying catheter, improve the success rate that patient rescues greatly.

(2) add flap valve in sleeve pipe afterbody interface, prevent after puncture needle is extracted out, air enters in the vein or the phenomenon of venous return, has avoided air embolism and unnecessary loss of blood, and patient's life is caused danger;

(3) inlying catheter adopts flexible material, is difficult for its hetero-organization is damaged, and has improved the safety in utilization of puncture remaining needle.

Description of drawings

Fig. 1 is the structural representation of the novel deep vein puncture retained needle puncture of this utility model pin;

Fig. 2 is the structural representation of the novel deep vein puncture remaining needle of this utility model sleeve pipe;

Fig. 3 is the structural representation of the novel deep vein puncture remaining needle of this utility model;

Reference numeral: 1, puncture needle, 11, the puncture needle syringe needle, 2, Paracentesis needle holder, 21, the upper end, 22, the lower end, 3, second interface, 4, the splicing needle stand, 5, sleeve pipe, 51, inlying catheter, 511, inlying catheter tube head, 52, casing seat, 6, first interface, 7, flap valve.

The specific embodiment

Below in conjunction with accompanying drawing of the present utility model, the technical scheme of this utility model embodiment is carried out clear, complete description.

As shown in Figure 1, the novel deep vein puncture remaining needle that this utility model discloses, comprise puncture needle 1 and the Paracentesis needle holder 2 of fixedlying connected with puncture needle 1, the inner chamber of Paracentesis needle holder 2 communicates with puncture needle 1, puncture needle 1 adopts the metallic hard material, and Paracentesis needle holder 2 materials can be plastics, and puncture needle syringe needle 11 adopts the nib type structure, the cross-sectional area of nib type tube head is less, has reduced the probability that blood vessel is accidentally injured.Paracentesis needle holder 2 is divided into upper end 21 and lower end 22, and needle stand upper end 21 external diameters are less than needle stand lower end 22 external diameters, and needle stand upper end 21 is used for being connected with casing seat 52.Paracentesis needle holder 2 one ends are provided with second interface 3 that connects syringe, are used for confirming whether puncture needle 1 penetrates into vein, can continue to connect splicing needle stand 4 in second interface 3.

As shown in Figure 2, the novel deep vein puncture remaining needle that this utility model discloses, also comprise the sleeve pipe 5 that is nested with outside puncture needle 1, sleeve pipe 5 comprises: fixedly connected soft inlying catheter 51 and casing seat 52, the inner chamber of casing seat 52 communicates with inlying catheter 51, sleeve pipe 5 afterbodys are provided with first interface 6 that is connected with puncture needle 1, set up the flap valve 7 of anti-adverse current in first interface 6, are used for preventing that air from entering into vein and venous return phenomenon.

As shown in Figure 3, the novel deep vein puncture remaining needle that this utility model discloses comprises sleeve pipe 5 and the puncture needle 1 that cooperatively interacts and connect, the outer wall of the inwall of inlying catheter 51 and puncture needle 1 fits, puncture needle syringe needle 11 is longer than inlying catheter tube head 511, the inwall of casing seat 52 and Paracentesis needle holder 2 outer walls fit, sleeve pipe 5 is connected with puncture needle 1 by casing seat 52, between inlying catheter 51 and the puncture needle 1 for being slidingly connected, after puncture needle 1 thrusts vein, the direction of inlying catheter 31 along puncture needle 1 pushed fully and be retained in the vein, casing seat 52 is positioned at the skin outside, is used for introducing steel wire or directly inserting transfusion catheter.

The operation principle of the novel deep vein puncture remaining needle of this utility model: puncture needle 1 is thrust in the vein, second interface, 3 places at puncture needle 1 connect syringe, extract a small amount of venous blood to determine the position of vein, after venous blood occurring, illustrate that puncture needle 1 has thrust vein, then the direction of soft inlying catheter 51 along puncture needle 1 is pushed in the vein, extract puncture needle 1, and then guide wire passed flap valve 7 and pass through the direction of inlying catheter 51 passages, insert in the vein, extract sleeve pipe 5, dark venous duct is enclosed within guide wire sends in the vein, extract guide wire at last again, piercing process finishes; Perhaps in case of emergency transfusion catheter directly can be inserted on the base 52 behind the inlying catheter and carry out fluid infusion.

Technology contents of the present utility model and technical characterictic have disclosed as above; yet those of ordinary skill in the art still may be based on teaching of the present utility model and announcements and are done all replacement and modifications that does not deviate from this utility model spirit; therefore; this utility model protection domain should be not limited to the content that embodiment discloses; and should comprise various do not deviate from replacement of the present utility model and modifications, and contained by present patent application claim.

Claims

1. novel deep vein puncture remaining needle, it comprises puncture needle, the Paracentesis needle holder of fixedlying connected with puncture needle, the inner chamber of described Paracentesis needle holder communicates with puncture needle, it is characterized in that: described deep vein puncture remaining needle also comprises the sleeve pipe that is nested with in the puncture needle outside, described internal surface of sleeve pipe and puncture needle outer wall fit, described sleeve pipe afterbody is provided with first interface that is connected with puncture needle, sets up the flap valve that prevents the venous blood adverse current in described first interface.

2. novel deep vein puncture remaining needle according to claim 1, it is characterized in that, described sleeve pipe comprises fixedly connected soft inlying catheter and casing seat, the inner chamber of casing seat communicates with inlying catheter, described puncture needle passes flap valve and passes through the inlying catheter passage, and described puncture needle syringe needle is longer than the inlying catheter tube head.

3. novel deep vein puncture remaining needle according to claim 2 is characterized in that, the top is the plane on the described indwelling casing tube tube head.

4. novel deep vein puncture remaining needle according to claim 1 is characterized in that, described puncture needle syringe needle is nib type.

5. novel deep vein puncture remaining needle according to claim 1 is characterized in that, described Paracentesis needle holder one end is provided with second interface that connects syringe.