CN201551575U

CN201551575U - Cam-slot type liquid transfer device

Info

Publication number: CN201551575U
Application number: CN2009203154909U
Authority: CN
Inventors: 油雅宁
Original assignee: SHAANXI TAIYANGYANG TECHNOLOGY Co Ltd
Current assignee: Gansu Chengji Biopharmaceutical Co., Ltd.
Priority date: 2009-11-23
Filing date: 2009-11-23
Publication date: 2010-08-18
Anticipated expiration: 2019-11-23

Abstract

The utility model discloses a cam-slot type liquid transfer device, which comprises an inner sleeve and an outer shell that are coaxially sheathed with each other, wherein one end of the inner sleeve inserting into the outer shell is provided with an opening, and the other end thereof is provided with an inner sleeve end cover; a needle hole is arranged at the axle center of the inner sleeve end cover; the inner surface of the inner sleeve end cover is coaxially provided with a needle base; the axle center of the needle base is fixed with a break-over needle; one end of the break-over needle penetrates through the needle hole of the inner sleeve end cover; the needle hole is provided with a needle protective cap; the other end of the break-over needle extends out of the opening of the inner sleeve and is aligned with a puncturing hole of the outer shell; cam slots are arranged on the periphery of the inner sleeve; the outer shell is divided into a puncturing chamber and a spring chamber; convex ribs are arranged at the inner periphery of the puncturing chamber; the puncturing hole is arranged between the puncturing chamber and the spring chamber; a spring is arranged between the bottom end of the spring chamber and the needle base; hanging slots are arranged on the outer periphery of the spring chamber; and each of the hanging slots can be connected with the cam slots on the inner sleeve by elastic guide rods. The cam-slot type liquid transfer device has simple structure, convenient use and low cost.

Description

Cam slot type pipettor

Technical field

This utility model belongs to technical field of medical instruments, relates to a kind of cam slot type pipettor.

Background technology

When clinical transfusion, existing lyophilized injectable powder and injectable powder to the process that large transfusion bottle shifts are: 1. be to draw a certain amount of solvent with disposable syringe, 2. solvent is dissolved in lyophilized injectable powder bottle or powder injection bottle (solute bottle), the medicinal liquid dissolving, 3. the solute after will dissolving sucks in the disposable syringe, 4. then solute is added to large transfusion bottle, realizes the dissolving and the transfer of medicine.The operation of the transfer process of this medicine is complicated, and medicinal liquid is drawn in the disposable syringe by secondary, causes the secondary pollution of medicine easily, is unfavorable for drug safety.

In the prior art, one class is to be used for the aqueous injection medicine shifts drug feeding device from medicinal liquid to large transfusion bottle, another kind is that solvent bottle (dress water for injection or sodium chloride injection) is relative with the bottleneck of solute bottle (dress lyophilized injectable powder or injectable powder), realize that by a hollow conducting pin conducting mixes medicine between the two, implement injection then.These two kinds similar deficiencies of moving the existence of medicine device are: first kind is moved the transfer that the medicine device only is applicable to the aqueous injection medicine, is not suitable for the transfer of injectable powder and lyophilized injectable powder, so its scope of application is quite limited; Second kind of pipettor is applicable to bigger transfusion flexible bag, is not suitable for a large amount of clinically common cillin bottles that use, and needs special solvent bottle and solute bottle, the cost height, and the scope of application is very little, can not large-scale popularization use.

Summary of the invention

The purpose of this utility model provides a kind of cam slot type pipettor, overcomes complicated operation in the prior art, causes the deficiency of medicine secondary pollution, the problem that the scope of application is limited easily.

The technical scheme that this utility model adopted is, a kind of cam slot type pipettor, comprise coaxial belled interior cover and shell, the end that interior cover stretches into shell is an opening, cover end cap in the other end of interior cover is provided with, interior cover end cap axle center has pin hole, the inner surface of interior cover end cap is coaxially arranged with needle stand, the axle center of needle stand is fixed with the conducting pin, the pin hole of cover end cap in conducting pin one end passes, this pin hole is equipped with the pin helmet, the opening of cover in the other end of conducting pin grows, and align mutually with the puncturing hole of shell, the circumference of interior cover is provided with cam path;

Shell is divided into puncture chamber and spring cavity, the inner periphery in puncture chamber is provided with convex tendon, has puncturing hole between puncture chamber and the spring cavity, is provided with a spring between the bottom of spring cavity and the needle stand, have hanging groove on the excircle of spring cavity, each hanging groove by the elasticity guide rod with in the cam path that puts be connected.

Pipettor of the present utility model, its feature also is:

Described cam path is heart-shaped structure groove, whole cam path is divided into four sections by four limiting points, every section groove depth is by shoaling gradually according to the direction of arrow deeply, 4 in deep, each section groove two ends is identical, 4 of superficial parts are also identical, vertically apex of the heart end is the inserting needle stop, and vertically the recessed end of the heart is a withdraw of the needle stop, and the circumference two-end-point is transition stop one and transition stop two.

The bottom of described spring cavity is provided with spring base.

The port in described puncture chamber is provided with over cap.

The beneficial effects of the utility model are, are applicable to that the aseptic pipettor of the formula of injecting is exempted from the disposable use of bottled solvent in common XiLin and solute, and it is simple in structure, and is easy to use, and cost is low, are fit to clinically or field and first aid occasion large-scale popularization are used.

Description of drawings

Fig. 1 is the structural representation of this utility model device;

Fig. 2 is the cam path structural representation in this utility model device;

Fig. 3 is elasticity guide rod and the cam path shift position sketch map in this utility model device, wherein a is that the elasticity guide rod is in transition stop one position, b be the elasticity guide rod at withdraw of the needle dead-centre position, c be the elasticity guide rod in transition stop two positions, d is that the elasticity guide rod is at the inserting needle dead-centre position;

Fig. 4 is this utility model device and powder syringe and medicine bottle connection diagram;

Fig. 5 is this utility model device and powder syringe and medicine bottle and pressurization water bottle connection diagram;

Fig. 6 is this utility model device and powder syringe and medicine bottle and transfusion medicine bottle connection diagram.

Among the figure, 1. spring, 2. conducting pin, 3. needle stand; 4. pin helmet, 5. in cover, 51. inserting needle stops, 52. withdraw of the needle stops; 53. transition stop one, 54. transition stop two, 6. elasticity guide rod, 7. shell; 8. over cap, 9. convex tendon, 10. spring base, 11. hanging grooves; 12. the powder syringe and medicine bottle, 13. pressurization water bottles, 14. transfusion medicine bottles, 15. cam paths; 16. interior cover end cap, 17. puncture chambeies, 18. spring cavitys.

The specific embodiment

Below in conjunction with the drawings and specific embodiments this utility model is elaborated.

As Fig. 1, pipettor of the present utility model, be used for lyophilized injectable powder and injectable powder medicine and exempt from the aseptic medicine device that moves of the formula of injecting to the disposable use that large transfusion bottle shifts, concrete structure is, comprise coaxial belled interior cover 5 and shell 7, interior cover 5 ends that stretch into shell 7 are opening, cover end cap 16 in the other end of interior cover 5 is provided with, interior cover end cap 16 axle center have pin hole, the inner surface of interior cover end cap 16 is coaxially arranged with needle stand 3, the axle center of needle stand 3 is fixed with conducting pin 2, the pin hole of cover end cap 16 in conducting pin 2 one ends pass, this pin hole is equipped with the pin helmet 4 of conducting pin 2, the opening of cover 5 in the other end of conducting pin 2 grows, and align mutually with the puncturing hole of shell 7, the circumference of interior cover 5 is provided with two groups of cam paths 15;

Shell 7 is divided into puncture chamber 17 and spring cavity 18; the inner periphery in puncture chamber 17 is provided with convex tendon 9; convex tendon 9 is used for being connected along buckle-type with bottleneck; the port in puncture chamber 17 is provided with over cap 8; have puncturing hole between puncture chamber 17 and the spring cavity 18; the bottom of spring cavity 18 is provided with spring base 10; be provided with a spring 1 between spring base 10 and the needle stand 3; have one or two group of hanging groove 11 on the excircle of spring cavity 18, each hanging groove 11 is connected with a cam path 15 on the interior cover 5 respectively by an elasticity guide rod 6.

As Fig. 2, the cam path 15 of this utility model pipettor is heart-shaped structure groove, and whole cam path 15 is divided into four sections by four limiting points, and every section groove depth is by shoaling gradually according to the direction of arrow deeply, and 4 in deep, each section groove two ends is identical, and 4 of superficial parts are also identical.Vertically apex of the heart end is an inserting needle stop 51, and inserting needle stop 51 is deviate from the spacing of shell 7 for cover 5 in preventing, that is to say that the injection depth of conducting pin 2 is spacing; Vertically the recessed end of the heart is a withdraw of the needle stop 52, and withdraw of the needle stop 52 penetrates the spacing of puncture chamber 17 for conducting pin 2; The circumference two-end-point is transition stop 1 and transition stop 2 54.

Slide at elasticity guide rod 6 tight end of pasting in heart-shaped groove, because the depth of every section bottom land relation makes the motion of elasticity guide rod be constrained on upwards slip of folk prescription.Slide block whenever moves downward once, because the effect of spring force, pressing force is removed the position of elasticity guide rod in groove, back all can rest on a specific limit, and limit is impulse stroke along the parallel distance between the direction of motion.

As Fig. 3, the cam path 15 of this utility model pipettor and hanging groove 11 by the work engagement process of elasticity guide rod 6 are figure a, cover 5 in pushing, spring 1 is compressed, and elasticity guide rod 6 slides into transition stop 1 from inserting needle stop 51, and cover 5 gos deep into shell 7 in being equivalent to; Figure b, cover 5 in unclamping, spring 1 is upheld, and elasticity guide rod 6 is fixed at the deep trouth that slides into withdraw of the needle stop 52 from transition stop 1, and cover 5 gos deep into shell 7 to the extreme position finger lock in being equivalent to, the conducting pin then stings out the puncturing hole of shell, puncture the plug of solute bottle simultaneously, the conducting pin other end punctures the solvent bottle plug, and this solvent bottle is filled with the band pressing bottle of gas in being, solvent then under stress enters the solute bottle automatically, implements to mix medicine.

Figure c, cover 5 in pushing once more, spring 1 is compressed, and elasticity guide rod 6 slides into transition stop 2 54 from withdraw of the needle stop 52, and cover 5 is outwards deviate from shell 7 in being equivalent to; Figure d, cover 5 in unclamping once more, spring 1 is upheld, elasticity guide rod 6 is fixed from the deep trouth that transition stop 2 54 slides into inserting needle stop 51, cover 5 outwards moves to the extreme position finger lock from shell 7 in being equivalent to, the conducting pin is extracted out from the solute bottle plug automatically, makes the solute bottle be in full closeding state, guarantees that the pressure of solute bottle is not revealed.So finish the process of an inserting needle and the withdraw of the needle.

Remove the solvent bottle of conducting pin one end, again this end is thrust in the infusion bottle, promote shell, make elasticity guide rod 6 be in withdraw of the needle stop 52 positions, the other end of conducting pin punctures the solute bottle plug once more, and solute enters into large transfusion bottle under pressure automatically, has implemented the totally-enclosed transfer of medicine.

The operation principle of this utility model device is, with reference to Fig. 1,

At first,, take down pin helmet 4 and over cap 8 with reference to Fig. 4, with the convex tendon 9 in puncture chamber 17 and the bottleneck clamping of powder syringe and medicine bottle 12, with this utility model pipettor and 12 firm connections of powder syringe and medicine bottle,

Then, with reference to Fig. 5, the conducting pin 2 of interior cover 5 is inserted in the pressurization water bottle 13, simultaneously interior cover 5 is pressed into the spring cavity 18 of shell 7, make the other end of conducting pin 3 insert in the powder syringe and medicine bottle 12, the pressurization water bottle 13 of top position is communicated with the powder syringe and medicine bottle 12 of lower position, and the powder injection in the powder syringe and medicine bottle 12 obtains dilution

At last, take down pressurization water bottle 13, will dilute good powder syringe and medicine bottle 12 and this utility model pipettor again and be connected with transfusion medicine bottle 14 downwards, conducting pin 3 is inserted in the transfusion medicine bottle 14, the medicinal liquid that dilution in the powder syringe and medicine bottle 12 is good is transferred to transfusion medicine bottle 14, promptly can be used for the transfusion injection.

Pipettor of the present utility model is simple in structure, portably uses conveniently, has realized the asepticize operation, can be used in field and first aid occasion in a large number, has broad prospects.

Claims

1. cam slot type pipettor, it is characterized in that: comprise coaxial belled interior cover (5) and shell (7), the end that interior cover (5) stretches into shell (7) is an opening, cover end cap (16) in the other end of interior cover (5) is provided with, interior cover end cap (16) axle center has pin hole, the inner surface of interior cover end cap (16) is coaxially arranged with needle stand (3), the axle center of needle stand (3) is fixed with conducting pin (2), the pin hole of cover end cap (16) in conducting pin (2) one ends pass, this pin hole is equipped with pin helmet (4), the other end of conducting pin (2) grows the opening of interior cover (5), and aligns mutually with the puncturing hole of shell (7), and the circumference of interior cover (5) is provided with cam path (15);

Shell (7) is divided into puncture chamber (17) and spring cavity (18), the inner periphery in puncture chamber (17) is provided with convex tendon (9), have puncturing hole between puncture chamber (17) and the spring cavity (18), be provided with a spring (1) between the bottom of spring cavity (18) and the needle stand (3), have hanging groove (11) on the excircle of spring cavity (18), each hanging groove (11) is connected with cam path (15) on the interior cover (5) by elasticity guide rod (6).

2. pipettor according to claim 1, it is characterized in that: described cam path (15) is heart-shaped structure groove, whole cam path (15) is divided into four sections by four limiting points, every section groove depth is by shoaling gradually according to the direction of arrow deeply, 4 in deep, each section groove two ends is identical, and 4 of superficial parts are also identical, and vertically apex of the heart end is inserting needle stop (51), vertically the recessed end of the heart is withdraw of the needle stop (52), and the circumference two-end-point is transition stop one (53) and transition stop two (54).

3. pipettor according to claim 1 is characterized in that: the bottom of described spring cavity (18) is provided with spring base (10).

4. pipettor according to claim 1 is characterized in that: the port in described puncture chamber (17) is provided with over cap (8).