CN202538081U

CN202538081U - Safe remaining needle

Info

Publication number: CN202538081U
Application number: CN2012200385871U
Authority: CN
Inventors: 赵继龙; 王强
Original assignee: Shandong Shinva Ande Healthcare Apparatus Co Ltd
Current assignee: Shandong Shinva Ande Healthcare Apparatus Co Ltd
Priority date: 2012-02-08
Filing date: 2012-02-08
Publication date: 2012-11-21
Anticipated expiration: 2022-02-08

Abstract

The utility model belongs to the medical apparatus, and particularly relates to a safe remaining needle. The safe remaining needle comprises a steel needle, a steel needle base, a soft catheter and a catheter base. The steel needle is positioned in the soft catheter, a shell is arranged outside the steel needle base, and a recycle barrel is fixedly arranged at the tail end of the shell. A sliding groove is arranged in the external wall of the shell and is provided with a transverse sliding switch. The shell is provided with a vertical opening which is internally provided with a radial moveable button. The button is internally provided with a transverse through hole matched with the switch. The rear end of the steel needle base is in the transverse through hole. A bump matched with the button is arranged on the external wall of the steel needle base. A compression spring is installed in a cavity formed by the front end of the bump, the steel needle base and the shell. After the safe remaining needle is successfully punctured, the switch is retreated from the transverse through hole of the button through forward pushing the switch, and the button is pressed, and the steel needle base is retracted into the recycle barrel under the effect of the compression spring, so that the tip of the steel needle is not exposed, therefore, safety of a patient, medical staff and other associated personnel is ensured, and puncture and cross infection are avoided.

Description

Safety indwelling needle

Technical field

This utility model relates to a kind of safety indwelling needle, is used for quiet (moving) arteries and veins transfusion (blood), belongs to medical apparatus and instruments.

Background technology

Safety indwelling needle is used clinical at present widely, and it adopts the form of flexible catheter cover draw point, and flexible catheter and draw point puncture after the human vas success simultaneously; Extract draw point out and flexible catheter is retained in human vas; It can keep somewhere a couple of days at blood vessel, reduces the patient because of the misery that venipuncture repeatedly causes reaches the fear to having an injection, and alleviates patient's impatience; Be convenient to the infusion of the rescue medication of clinical application and critical, critical patient, alleviate nurse's workload.

Common safety indwelling needle is after clinical puncture finishes, and the draw point of extraction is because of can not in time handling, perhaps in depleted process; Can not effectively protect draw point; Make that in this process exposed needle point is stabbed/scratched patient or associated care personnel formation easily, causes cross infection.Therefore after the success of safety indwelling needle puncture vessel, it is clinical pressing for that draw point is reclaimed protection.

The utility model content

According to above deficiency of the prior art, the technical problem that this utility model will solve is: the draw point that provides a kind of and carry the draw point retracting device, can avoid going out of use stings the safety indwelling needle that injures cross infection.

This utility model solves the technical scheme that its technical problem adopted: described safety indwelling needle, comprise draw point, draw point seat, flexible catheter and catheter block, and draw point, flexible catheter are separately fixed at the front end of draw point seat, catheter block; Draw point is arranged in flexible catheter, it is characterized in that: the draw point seat is provided with shell outward, the terminal fixedly recovery cylinder of shell; Has chute on the outer wall of shell; Horizontal slide switch is installed in the chute, is had vertical opening on the shell, radially active button is installed in the vertical opening; The cross through hole that cooperates with switch is set in the button; The draw point base rear end is arranged in cross through hole, and the convexity that cooperates with button is set on the outer wall of draw point seat, and the compression spring is installed in the cavity that forms between protruding front end, draw point seat and the shell.

In this utility model, shell has chute and vertical opening, and chute is used to place switch, and switch can slide in chute, through moving of switch, and radial motion that can lock/unlock button; Button has cross through hole, and cross through hole cooperates with switch on the one hand, and switch can get into/withdraw from, thus the radial motion of lock/unlock button; Cooperate with the draw point seat on the other hand, after switch got into cross through hole, the front end face of button stopped retreating of draw point seat; After switch withdraws from cross through hole, button to be pressed, cross through hole moves down; The draw point seat passes cross through hole under the effect of compression spring, the draw point seat gets in the recovery cylinder together with draw point; The convexity that is provided with on the draw point seat outer wall both can be used as the strong point/face that compresses spring, again can be when button is limited by switch; Form dislocation with the cross through hole of button, stop the draw point seat, withdrawing from when switch through the button cross through hole; When button was pressed, convexity can be passed through cross through hole, made the draw point seat under the effect of compression spring; Pass cross through hole, get into recovery cylinder together with draw point, the operation cycle finishes; Draw point is isolated from the outside, and avoids draw point mistake thorn, plays protection related personnel's effect.

Wherein, the described various ways that is raised with can be the bulge loop that is provided with around draw point seat periphery, also can be salient point, and the quantity of salient point is at least two.

In this utility model, recovery cylinder and the shell fixed form between the two has multiple, preferred following two kinds of schemes:

Scheme one: described recovery cylinder and shell adopt interference fit.Can guarantee that through interference fit recovery cylinder and shell are connected to one.

Scheme two: described recovery cylinder is connected through screw threads for fastening with shell.Through being threaded, can either guarantee that recovery cylinder and shell connect as one, and are convenient to production and assembly again.

The beneficial effect that this utility model had is:

The safety remaining needle is after successfully puncturing; Through preceding buck switch, switch is withdrawed from, then push button from the cross through hole of button; The draw point seat will be retracted in the recovery cylinder under the effect of compression spring together with draw point; The draw point needle point can not exposed, thereby protection patient, medical personnel and other related personnel's safety avoid thorn to injure cross infection.

Description of drawings

Fig. 1 is the structural representation of this utility model under the original state;

Fig. 2 is the position view of button and draw point seat among Fig. 1;

Fig. 3 is the structural representation that draw point reclaims back this utility model;

Fig. 4 is the position view that button is pressed back button and draw point seat.

Among the figure: 1, sheath; 2, draw point; 3, flexible catheter; 4, catheter block; 5, shell; 6, compression spring; 7, switch; 8, button; 9, draw point seat; 10, recovery cylinder; 11, convexity.

The specific embodiment

Below in conjunction with accompanying drawing the embodiment of this utility model is done and to further describe:

Like Fig. 1, shown in 2, safety indwelling needle comprises draw point 2, draw point seat 9, flexible catheter 3 and catheter block 4, and draw point 2, flexible catheter 3 are separately fixed at the front end of draw point seat 9, catheter block 4; Draw point 2 is arranged in flexible catheter 3, the draw point seat 9 outer shells 5 that are provided with, shell 5 terminal fixedly recovery cylinders 10; Has chute on the outer wall of shell 5; Horizontal slide switch 7 is installed in the chute, is had vertical opening on the shell 5, radially active button 8 is installed in the vertical opening; The cross through hole that cooperates with switch 7 is set in the button 8; Draw point seat 9 rear ends are arranged in cross through hole, and the convexity 11 that cooperates with button is set on the outer wall of draw point seat 9, and compression spring 6 is installed in the cavity that forms between protruding 11 front end, draw point seat 9 and the shell 5.

Under original state, as shown in Figure 1, draw point 2 is fixed on draw point seat 9 front ends; Button 8 is in raised position, and switch 7 is positioned at cross through hole, under the effect of switch 7; Button 8 can't be pressed, and at this moment, compression spring 6 is in compressive state; The rear end face and the cross through hole of draw point seat 9 protruding 11 form dislocation, and be as shown in Figure 2, and button 8 stops the ejection of draw point seat 9.After safety indwelling needle punctures successfully, with pushing away before the switch 7, after switch 7 withdraws from from cross through hole fully; Press the button 8, cross through hole is moved down, after the convexity 11 of draw point seat 9 is in cross through hole fully; As shown in Figure 4, draw point seat 9 passes cross through hole under the effect of compression spring 6; Draw point seat 9 enters into recovery cylinder 10 together with draw point 2, and is as shown in Figure 3.

Wherein, recovery cylinder 10 is a hollow structure, and an end seals an end opening, and opening and shell 5 one ends are secure fit or interference fit, produces and guaranteed performance for convenient, preferentially selects for use screw threads for fastening to cooperate; Shell 5 open rearward end, front end are the end face of perforate/groove, and hole/groove can make draw point seat 9 join the draw point end through also playing the effect of compressing spring 6 that stops; Convexity 11 on draw point seat 9 outer walls can be a bulge loop, also can be a plurality of salient points; In order to guarantee the safe in utilization and sanitary condition of safety indwelling needle, can be provided with sheath 1 at the safety indwelling needle front end by the structure of conventional security remaining needle.

Claims

1. a safety indwelling needle comprises draw point, draw point seat, flexible catheter and catheter block, and draw point, flexible catheter are separately fixed at the front end of draw point seat, catheter block; Draw point is arranged in flexible catheter, it is characterized in that: the draw point seat is provided with shell outward, the terminal fixedly recovery cylinder of shell; Have chute on the outer wall of shell, horizontal slide switch is installed in the chute, have vertical opening on the shell; Radially active button is installed in the vertical opening, the cross through hole that cooperates with switch is set in the button, the draw point base rear end is arranged in cross through hole; The convexity that cooperates with button is set on the outer wall of draw point seat, the compression spring is installed in the cavity that forms between protruding front end, draw point seat and the shell.

2. safety indwelling needle according to claim 1 is characterized in that: described convexity is the bulge loop that is provided with around draw point seat periphery.

3. safety indwelling needle according to claim 1 is characterized in that: described convexity is a salient point, and the quantity of salient point is at least two.