CN218356222U - Blood sampling device capable of preventing needle stick injury - Google Patents

Abstract

The utility model belongs to the field of medical appliances, in particular to a blood sampling device for preventing needle stick injuries, which comprises a needle feeding tube, a needle head, a conical block and a telescopic mechanism; a telescopic mechanism is arranged in the needle feeding pipe; one end of the needle feeding tube is provided with a conical block, and a needle head penetrates through the conical block and is fixedly connected with the telescopic mechanism; the telescopic mechanism comprises a telescopic pipe, a first spring, a blood sampling pipe and a pressure rod; one side of the extension tube is provided with a pressure groove; the bottom of the pressure lever is contacted with the pressure groove; the pressure rod penetrates through the side wall of the needle feeding tube; the pressing rod is sleeved with a second spring; the lower end of the second spring is fixedly connected with the pressure lever; the upper end of the second spring is fixedly connected with the inner wall of the needle feeding pipe; one end of the telescopic pipe is sleeved with a first spring; one end of the first spring is fixedly connected with the side wall of the needle feeding tube; one end of the first spring is fixedly connected with the telescopic pipe; the side wall of the extension tube is fixedly connected with a push rod; the telescopic pipe is sleeved outside the blood sampling pipe; the needle head is pushed out by pushing the push rod, the press rod is pulled up to recover the needle head, and the medical care personnel are prevented from being punctured by the needle head before and after blood sampling operation.

Description

Blood sampling device capable of preventing needle stick injury

Technical Field

The utility model relates to the field of medical equipment, specifically a prevent blood sampling device that needle prick hindered.

Background

Blood collection refers to a process in which medical personnel takes arterial or venous blood samples of patients;

generally, before blood sampling, medical personnel needs to take off a needle protecting cap, insert a needle into a blood vessel for operation, and insert the needle into the needle protecting cap again after the blood sampling is finished for subsequent treatment operation;

after blood sampling is finished, the needle head is inserted back into the needle protecting cap again, so that the operation is inconvenient, and medical workers are easily stabbed by the operation; therefore, a blood sampling device for preventing needle stick injury is provided to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to make up the deficiency of the prior art, the blood sampling process easily causes the problem of stabbing, the utility model provides a prevent blood sampling device that the needle pricked.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a blood sampling device for preventing needle stick injuries, which comprises a needle feeding tube, a needle head, a conical block and a telescopic mechanism; a telescopic mechanism is arranged in the needle feeding pipe; one end of the needle feeding pipe is provided with a conical block, and the needle head penetrates through the conical block and is fixedly connected with the telescopic mechanism;

the telescopic mechanism comprises a telescopic pipe, a first spring, a blood sampling pipe and a pressure rod; one side of the extension tube is provided with a pressure groove; the bottom of the pressure lever is contacted with the pressure groove; the pressure rod penetrates through the side wall of the needle feeding tube; the pressing rod is sleeved with a second spring; the lower end of the second spring is fixedly connected with the pressure lever; the upper end of the second spring is fixedly connected with the inner wall of the needle feeding pipe; one end of the extension tube is sleeved with a first spring; one end of the first spring is fixedly connected with the side wall of the needle feeding tube; one end of the first spring is fixedly connected with the telescopic pipe; the side wall of the extension tube is fixedly connected with a push rod; a sliding groove is formed in one side of the needle feeding pipe; the push rod is connected in the sliding groove in a sliding manner; the telescopic pipe is sleeved outside the blood sampling pipe; heparin tube one end and syringe needle fixed connection can be with in the syringe needle income cone, avoid direct exposure in the air, cause the stab wound.

Preferably, a fixing pipe is sleeved outside the compression bar; the bottom of the fixed tube is fixedly connected with the outer wall of the needle feeding tube; bulges are arranged on two sides of the pressure lever; limiting grooves are formed in the side walls of the two sides of the fixed pipe; the width of the limiting groove is consistent with that of the protrusion; an arc-shaped groove is formed in one side of the limiting groove; the arc groove width is consistent with the limiting groove length, and pollution caused by the fact that the lower end of the pressing rod touches the needle head is avoided.

Preferably, a hard tube is sleeved outside the blood collection tube; one end of the hard pipe is fixedly connected with the bottom of the telescopic pipe; the other end of the hard tube is arranged on the outer side of the needle feeding tube; hard tube and needle tube sliding connection send, guarantee that the displacement of flexible pipe is smooth to go on, avoid heparin tube to influence.

Preferably, two sides of the extension tube are fixedly connected with limiting rods; a groove is formed in the inner wall of the needle feeding pipe; the limiting rod is connected in the groove in a sliding mode, and the telescopic pipe is prevented from inclining in the displacement process.

Preferably, the bottom of the conical block is provided with threads; threads are arranged in the opening of the needle feeding pipe; the conical block is in threaded connection with the needle feeding pipe, so that the needle head is convenient to treat.

Preferably, a fixed block is clamped at the opening of the telescopic pipe; the syringe needle runs through the fixed block, can pull out syringe needle and heparin tube together, convenient to detach.

The utility model discloses an useful part lies in:

1. the utility model discloses a set up first spring in flexible pipe bottom, utilize first spring to carry out the receiving and releasing of syringe needle, make the syringe needle can contract in the toper piece and stretch out the toper piece when using, around avoiding the blood sampling operation, the syringe needle exposes in the air, easily causes the puncture, utilize the cooperation of depression bar and indent to realize that the syringe needle is spacing at the during operation, through the screens of depression bar and flexible pipe front end hypotenuse, thereby realize the syringe needle spacing of accomodating, through setting up the arch in depression bar both sides, carry out spacing to the depression bar, avoid depression bar lower extreme contact syringe needle, cause the pollution to the syringe needle;

2. the utility model discloses a establish the hard tube at the outer cover of blood sampling pipe, make flexible pipe carry out at the intraductal displacement process smoothness of syringe that send, avoid the blood sampling pipe of hose material to influence flexible pipe displacement.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic perspective view of a first embodiment;

FIG. 2 is a schematic sectional front view illustrating the first embodiment;

FIG. 3 is a schematic top view of the fixing tube according to the first embodiment;

FIG. 4 is a schematic sectional view of a telescopic tube in accordance with a first embodiment;

fig. 5 is an overall front sectional structural view of the second embodiment.

In the figure: 1. a needle feeding tube; 2. a needle head; 3. a telescoping mechanism; 4. a fixed tube; 5. a limiting groove; 6. an arc-shaped slot; 7. a blood collection tube; 8. a hard pipe; 9. a conical block; 301. a telescopic pipe; 302. a first spring; 303. a push rod; 304. pressing a groove; 305. a pressure lever; 306. a second spring; 307. a chute; 308. a limiting rod; 309. a push plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-4, a blood sampling device for preventing needle stick injury comprises a needle feeding tube 1, a needle head 2, a conical block 9 and a telescopic mechanism 3; a telescopic mechanism 3 is arranged in the needle feeding tube 1; one end of the needle feeding tube 1 is provided with a conical block 9, and the needle head 2 penetrates through the conical block 9 and is fixedly connected with the telescopic mechanism 3;

the telescopic mechanism 3 comprises a telescopic pipe 301, a first spring 302, a blood sampling pipe 7 and a pressure lever 305; one side of the extension tube 301 is provided with a pressure groove 304; the bottom of the pressure rod 305 is in contact with the pressure groove 304; the pressure rod 305 penetrates through the side wall of the needle feeding tube 1; a second spring 306 is sleeved on the compression bar 305; the lower end of the second spring 306 is fixedly connected with the pressure lever 305; the upper end of the second spring 306 is fixedly connected with the inner wall of the needle feeding tube 1; one end of the extension tube 301 is sleeved with a first spring 302; one end of the first spring 302 is fixedly connected with the side wall of the needle feeding tube 1; one end of the first spring 302 is fixedly connected with the bottom of the extension tube 301; the side wall of the extension tube 301 is fixedly connected with a push rod 303; a sliding chute 307 is arranged on one side of the needle feeding tube 1; the push rod 303 is slidably connected in the sliding groove 307; the extension tube 301 is sleeved outside the blood collection tube 7; one end of the blood collection tube 7 is fixedly connected with the needle head 2;

the during operation, before the blood sampling operation, syringe needle 2 is received in conical block 9, through promoting push rod 303, drive flexible pipe 301 displacement, syringe needle 2 displacement simultaneously, first spring 302 compression, possess elastic potential energy, depression bar 305 lower extreme is contradicted with the telescopic link lateral wall, second spring 306 compression, second spring 306 possesses elastic potential energy this moment, when indent 304 displacement arrives depression bar 305 lower extreme, because elastic potential energy's effect, second spring 306 pushes depression bar 305 into indent 304, fix the telescopic link position, after the blood sampling operation is accomplished, need take in syringe needle 2 in conical block 9, avoid stabbing, through pulling out depression bar 305, under the elastic potential energy effect of first spring 302, flexible pipe 301 is to sending needle pipe 1 bottom displacement, drive syringe needle 2 displacement simultaneously, syringe needle 2 is taken in conical block 9.

A fixed pipe 4 is sleeved outside the pressure lever 305; the bottom of the fixed tube 4 is fixedly connected with the outer wall of the needle feeding tube 1; the two sides of the pressure lever 305 are provided with protrusions; the side walls of the two sides of the fixed pipe 4 are provided with limit grooves 5; the width of the limiting groove 5 is consistent with that of the protrusion; an arc-shaped groove 6 is formed in one side of the limiting groove 5; the width of the arc-shaped groove 6 is consistent with the length of the limiting groove 5;

during operation, pull up depression bar 305, flexible pipe 301 contracts, and the arch slides in fixed pipe 4's spacing groove 5, draws the arch of depression bar 305 both sides to fixed pipe 4 upper end, and clockwise rotation depression bar 305 makes the arch slide to in the arc wall 6, avoids depression bar 305 lower extreme touching syringe needle 2 to cause the pollution.

A hard tube 8 is sleeved outside the blood collection tube 7; one end of the hard pipe 8 is fixedly connected with the bottom of the extension pipe 301; the other end of the hard tube 8 is arranged outside the needle feeding tube 1; the hard tube 8 is connected with the needle feeding tube 1 in a sliding way;

during operation, flexible pipe 301 takes place the displacement in sending needle pipe 1, and the stiff tube 8 with sending needle pipe 1 bottom sliding connection simultaneously the displacement of flexible pipe 301 is guaranteed and is gone on smoothly, avoids the influence of the blood collection tube 7 of hose texture.

Two sides of the extension tube 301 are fixedly connected with limit rods 308; the inner wall of the needle feeding tube 1 is provided with a groove; the limiting rod 308 is connected in the groove in a sliding manner;

when the needle feeding device works, the telescopic tube 301 displaces in the needle feeding tube 1, the limiting rods 308 on two sides of the telescopic tube 301 slide in the grooves to limit the telescopic tube 301, and the telescopic tube 301 is prevented from deviating in the displacement process.

The bottom of the conical block 9 is provided with threads; threads are arranged in the opening of the needle delivery tube 1; the conical block 9 is in threaded connection with the needle feeding tube 1;

during operation, after blood sampling is finished, the conical block 9 can be separated from the needle feeding tube 1 by rotating the conical block 9, and the needle head 2 is convenient to process.

A fixed block is clamped at the pipe orifice of the telescopic pipe 301; the needle head 2 penetrates through the fixing block;

during operation, with toper piece 9 with send needle pipe 1 to separate, extract the fixed block again, can extract syringe needle 2 and heparin tube 7 together from the telescopic tube, be convenient for dismantle syringe needle 2 and heparin tube 7 after the use to telescoping device used repeatedly.

Example two

Referring to fig. 5, as another embodiment of the present invention, in a first comparative example, a push plate 309 is fixedly connected to an outer end of the push rod 303; when the push plate pushing device works, the push plate 309 is pushed to drive the push rod 303 to move, so that the push plate 309 can be conveniently pushed.

The working principle of the method is that,

after the existing needle is used, a medical worker is used to insert the needle back into the needle protecting cap, the medical worker is easily hurt by the operation mode, when the device is used, namely before blood sampling operation, the needle 2 is retracted into the conical block 9, the telescopic tube 301 is driven to displace by pushing the push rod 303, the needle 2 simultaneously displaces, the first spring 302 compresses to have elastic potential energy, the lower end of the press rod 305 is abutted against the inclined plane at the front end of the telescopic tube 301, the second spring 306 compresses to have elastic potential energy, when the press groove 304 displaces to the lower end of the press rod 305, the second spring 306 pushes the press rod 305 into the press groove 304 due to the effect of the elastic potential energy, the position of the telescopic tube 302 is fixed by the cooperation of the press rod 305 and the press groove 304, the needle 2 is limited when working, after the blood sampling operation is completed, the needle 2 needs to be retracted into the conical block 9, the puncture is avoided, the pressing rod 305 is pulled up, the telescopic pipe 301 retracts, the protrusions slide in the limiting grooves 5 of the fixed pipe 4, the protrusions on two sides of the pressing rod 305 are pulled to the upper end of the fixed pipe 4, the pressing rod 305 is rotated clockwise to enable the protrusions to slide into the arc-shaped grooves 6, the lower end of the pressing rod 305 is prevented from touching the needle head 2 to cause pollution, under the action of elastic potential energy of the first spring 302, the telescopic pipe 301 displaces towards the bottom of the needle feeding pipe 1 and simultaneously drives the needle head 2 to displace, the needle head 2 is collected into the conical block 9, the retraction process of the needle head 2 is realized through the collection and release of the first spring 302, the limiting during collection of the needle head 2 is realized through the clamping of the pressing rod 305 and the inclined plane at the front end of the telescopic pipe 301, when the telescopic pipe 301 displaces, the hard pipe 8 connected with the bottom of the needle feeding pipe 1 in a sliding mode simultaneously displaces, the displacement of the telescopic pipe 301 is ensured to be carried out smoothly, and the influence of the blood sampling pipe 7 is avoided;

after the blood sampling is finished, the conical block 9 is separated from the needle feeding tube 1 by rotating the conical block 9, the fixed block is pulled out, and the needle head 2 and the blood sampling tube 7 can be pulled out together, so that the replacement is convenient.

In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (6)

1. The utility model provides a blood sampling device that needle-prick prevention hindered which characterized in that: comprises a needle feeding tube (1), a needle head (2), a conical block (9) and a telescopic mechanism (3); a telescopic mechanism (3) is arranged in the needle feeding tube (1); one end of the needle feeding tube (1) is provided with a conical block (9), and the needle head (2) penetrates through the conical block (9) and is fixedly connected with the telescopic mechanism (3);

the telescopic mechanism (3) comprises a telescopic pipe (301), a first spring (302), a blood collection pipe (7) and a pressure lever (305); one side of the telescopic pipe (301) is provided with a pressing groove (304); the bottom of the pressure rod (305) is in contact with the pressure groove (304); the pressure lever (305) penetrates through the side wall of the needle feeding tube (1); a second spring (306) is sleeved on the compression rod (305); the lower end of the second spring (306) is fixedly connected with the pressure lever (305); the upper end of the second spring (306) is fixedly connected with the inner wall of the needle feeding tube (1); one end of the telescopic pipe (301) is sleeved with a first spring (302); one end of the first spring (302) is fixedly connected with the side wall of the needle feeding tube (1); one end of the first spring (302) is fixedly connected with the bottom of the extension tube (301); the side wall of the telescopic pipe (301) is fixedly connected with a push rod (303); a sliding chute (307) is formed in one side of the needle conveying tube (1); the push rod (303) is connected in the sliding groove (307) in a sliding way; the telescopic pipe (301) is sleeved outside the blood collection pipe (7); one end of the blood collection tube (7) is fixedly connected with the needle head (2).

2. The needle stick resistant lancing device of claim 1, further comprising: a fixed pipe (4) is sleeved outside the pressure lever (305); the bottom of the fixed tube (4) is fixedly connected with the outer wall of the needle feeding tube (1); bulges are arranged on two sides of the pressure lever (305); the side walls of two sides of the fixed pipe (4) are provided with limit grooves (5); the width of the limiting groove (5) is consistent with that of the protrusion; an arc-shaped groove (6) is formed in one side of the limiting groove (5); the width of the arc-shaped groove (6) is consistent with the length of the limiting groove (5).

3. The needle stick resistant lancing device of claim 2, further comprising: a hard tube (8) is sleeved outside the blood collection tube (7); one end of the hard pipe (8) is fixedly connected with the bottom of the telescopic pipe (301); the other end of the hard tube (8) is arranged on the outer side of the needle conveying tube (1); the hard tube (8) is connected with the needle feeding tube (1) in a sliding way.

4. A needle stick resistant lancing device according to claim 3, wherein: limiting rods (308) are fixedly connected to two sides of the telescopic pipe (301); the inner wall of the needle delivery tube (1) is provided with a groove; the limiting rod (308) is connected in the groove in a sliding mode.

5. The needle stick resistant lancing device of claim 4, wherein: the bottom of the conical block (9) is provided with threads; a thread is arranged in the opening of the needle delivery tube (1); the conical block (9) is in threaded connection with the needle feeding pipe (1).

6. The needle stick resistant lancing device of claim 5, wherein: a fixed block is clamped at the pipe orifice of the telescopic pipe (301); the needle head (2) penetrates through the fixing block.

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