CN201612848U

CN201612848U - Dispensing syringe needle

Info

Publication number: CN201612848U
Application number: CN2010203014662U
Authority: CN
Inventors: 吕海洋
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-25
Filing date: 2010-01-25
Publication date: 2010-10-27
Anticipated expiration: 2020-01-25

Abstract

The utility model provides a dispensing syringe needle, which belongs to the technical field of medical equipment and solves such problems of the conventional dispensing syringe needle as high dispensing difficulty and drug waste. The dispensing syringe needle comprises a needle bar provided with a liquor passing channel and a needle bed provided with a liquor passing hole, wherein one end of the needle bar is fixedly connected with the needle bed; the liquor passing channel of the needle bar is communicated with the liquor passing hole of the needle bed; the needle bar is sleeved by a cylindrical loop bar; and an air guide channel communicated with the external air is formed on the side wall of the loop bar, so that the air inside a drug bottle can be communicated with the external air during dispensing. The utility model has the advantages that the dispensing syringe needle can reduce the labor intensity of medical workers and avoid drug waste and pollution during dispensing.

Description

A kind of syringe needle that makes up a prescription

Technical field

This utility model belongs to technical field of medical instruments, relates to a kind of syringe needle that makes up a prescription.

Background technology

Medical personnel are when infusing to patient, need configuration medicinal liquid earlier, at present, preparating liquid uses disposable syringe mostly clinically, be that the hand-held disposable syringe of medical personnel extracts water for injection or diluent, inject dissolving or dilution medicine in the medicine bottle, after medicine is fully dissolved, draw again and inject in the infusion bottle.In the suction process, owing to dose in the medicine bottle reduces to produce negative pressure, the difficulty of extraction also increases gradually, and the medicinal liquid in the bottle is difficult for draining only, and reality has reduced the injection dose, does not reach due therapeutic effect.In addition, when injecting medicinal liquid toward infusion bottle, along with the increase of dose, its pressure is also increasing in the infusion bottle, so the strength of medical personnel's injection liquid also needs and then to increase, and has brought very big difficulty for the work of making up a prescription.

For this reason, people have designed a kind of bushing type automatic air intake and discharge dispensing needle, and declared patent, its notification number is CN2689956Y, this dispensing needle is by the syringe adapter of bringing the exhaust passage into, and the puncture needle of bringing exhaustor into that is fixed on the syringe adapter is formed, the upper end of air inlet-outlet pipe communicates with porting on the syringe needle, the lower end communicates with intake and exhaust channel, the overcoat needle tubing is equipped with in the outside of puncture needle, the top of overcoat needle tubing has the liquid in-out mouth, between overcoat needle tubing and the puncture needle syringe needle seal is housed.

As can be seen, the puncture needle of this dispensing needle is in reaching medicinal liquid the time, and its porting equally also reaches in the medicinal liquid.This dispensing needle is when extracting medicinal liquid, and ambient atmosphere can be passed through intake and exhaust channel, air inlet-outlet pipe and porting successively toward the interior inflation of medicine bottle, with the pressure inside and outside the balance medicine bottle.But when in medicine bottle, injecting medicinal liquid, because the increase of dose, pressure in the medicine bottle can be greater than ambient pressure, and this moment porting owing to be arranged in medicinal liquid, this hyperbar that will occur in the medicine bottle is extruded the situation of medicine bottle with balance medicine bottle external and internal pressure with medicinal liquid from air inlet-outlet pipe and intake and exhaust channel, has caused the waste of medicinal liquid.Therefore, this dispensing needle can only be used for extracting medicinal liquid in medicine bottle, and can not fundamentally solve existing problem when making up a prescription at present.

Summary of the invention

The purpose of this utility model is at the existing the problems referred to above of existing dispensing needle, and has proposed a kind ofly in the process of making up a prescription, and extracts and injects the medicinal liquid operation and the time can make medicine bottle internal gas pressure and ambient pressure remain the equilibrated syringe needle that makes up a prescription.

The purpose of this utility model can realize by following technical proposal: a kind of syringe needle that makes up a prescription, comprise shank with liquid passage and needle stand with liquid-through hole, one end and the needle stand of described shank are connected, and the liquid passage of crossing of shank is communicated with the liquid-through hole of needle stand, it is characterized in that, be socketed with the loop bar of a tubular on the described shank, the sidewall of described loop bar offers one can make the air guide channel that gas communicates with ambient atmos in the medicine bottle when making up a prescription.

In the process of making up a prescription, the gas in the medicine bottle can communicate with the external world by air guide channel all the time.When extracting medicinal liquid in medicine bottle, the pressure in the medicine bottle can reduce, and this moment, ambient atmosphere added in the medicine bottle by air guide channel, makes air pressure and ambient pressure in the medicine bottle keep balance.When injecting medicinal liquid in medicine bottle, the pressure in the medicine bottle can increase, and the interior gas of medicine bottle this moment is discharged by air guide channel, makes air pressure and ambient pressure in the medicine bottle keep balance.

In above-mentioned a kind of syringe needle that makes up a prescription, described air guide channel is an air slot, and this air slot axially is opened in the outer surface of loop bar.Because air slot is opened in the outer surface of loop bar, the part that air slot is inserted in the medicine bottle all can carry out exchanging into and out of gas.So, even if an end of air guide channel is inserted into the work that also can not have influence on equilibrium air pressure in the medicinal liquid.

In above-mentioned a kind of syringe needle that makes up a prescription, have on the described loop bar and make things convenient for loop bar together to insert spigot surface in the medicine bottle with shank.The plug of shank penetration of vials is inserted into when carrying out dispensing operation in the medicine bottle, and the spigot surface on the loop bar can make things convenient for loop bar together to insert in the medicine bottle with shank, plays the effect that reduces resistance.

In above-mentioned a kind of syringe needle that makes up a prescription, described spigot surface is tapered, and is positioned at the end that loop bar inserts an end of medicine bottle.

In above-mentioned a kind of syringe needle that makes up a prescription, be fixed with outstanding laterally shoulder block on the described loop bar.Shoulder block plays position-limiting action, prevents that loop bar from inserting when inserting medicine bottle deeply and make whole section air guide channel all be positioned at medicine bottle.

In above-mentioned a kind of syringe needle that makes up a prescription, described shoulder block is arranged on the end of loop bar and is connected with needle stand ringwise.

In above-mentioned a kind of syringe needle that makes up a prescription, offer on the described shoulder block run through the shoulder block sidepiece cross the gas passage, this is crossed the gas passage and is communicated with and is communicated with atmosphere all the time with above-mentioned air guide channel.Be positioned under the end of loop bar and the situation that needle stand is connected at shoulder block, when loop bar insertion medicine bottle to shoulder block leans on plug, air guide channel on the loop bar all is inserted in the medicine bottle, and the gas passage excessively on the shoulder block can be communicated with air guide channel and atmosphere at this moment, finish gas communication.

In above-mentioned a kind of syringe needle that makes up a prescription, described shoulder block and needle stand are fixed together by binding agent.

In above-mentioned a kind of syringe needle that makes up a prescription, described loop bar closely is socketed on the shank, and both are fixed together.

Compared with prior art, originally the syringe needle that makes up a prescription is provided with the loop bar with air guide channel on shank, this air guide channel carries out gas communication with medicine bottle inside with extraneous conducting, make air pressure and ambient pressure in the medicine bottle remain balance, the work of making up a prescription saves time, laborsaving, greatly facilitate medical personnel, alleviated their labor intensity.Simultaneously, the situation that overflow of drug fluid causes drug waste and pollution can not appear during dispensing operation.

Description of drawings

Fig. 1 is the sectional structure sketch map of syringe needle of originally making up a prescription.

Fig. 2 is the main TV structure sketch map of loop bar in the syringe needle of originally making up a prescription.

Fig. 3 is the cutaway view of Fig. 2 at the A-A place.

Fig. 4 is the sketch map of syringe needle when carrying out dispensing operation that originally make up a prescription.

Among the figure, 1, shank; 11, cross the liquid passage; 2, loop bar; 21, shoulder block; 21a, mistake gas passage; 22, spigot surface; 23, air slot; 3, needle stand; 31, liquid-through hole; 4, plug; 5, medicine bottle.

The specific embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but this utility model be not limited to these embodiment.

As shown in Figure 1, the syringe needle that originally makes up a prescription comprises shank 1 with liquid passage 11 and the needle stand 3 with liquid-through hole 31, and the end of shank 1 and needle stand 3 are connected, and the liquid passage 11 of crossing of shank 1 is communicated with the liquid-through hole 31 of needle stand 3.Closely be socketed with a loop bar 2 on the shank 1, the sidewall of loop bar 2 offers one can make the air guide channel that gas communicates with ambient atmos in the medicine bottle 5 when making up a prescription.

As shown in Figures 2 and 3, loop bar 2 is tubular, its the inner is provided with the spigot surface 22 of taper, its end, outer end is provided with an outstanding laterally annular shoulder block 21, the outer face of shoulder block 21 and needle stand 3 are fixed together by binding agent, offer on the shoulder block 21 one run through the shoulder block sidepiece cross gas passage 21a, this is crossed gas passage 21a and is communicated with air guide channel.In the present embodiment, air guide channel is an air slot 23, axially is opened in the outer surface of loop bar 2.

As shown in Figure 4, when making up a prescription, to the make up a prescription shank 1 of syringe needle of the dispensing instrument that has a syringe needle that originally makes up a prescription is inserted in the medicine bottle 5, loop bar 2 on the shank 1 also is inserted in the medicine bottle 5 with the plug 4 of shank 1 penetration of vials 5, and the tapered guide surface 22 of loop bar 2 the inners can help loop bar 2 to pierce through plug 4 smoothly to be inserted in the medicine bottle 5 well.Shank 1 end extend in the medicinal liquid, and loop bar 2 is shorter, does not extend in the medicinal liquid.Air slot 23 parts on the loop bar 2 are positioned at medicine bottle 5, and a part is positioned at outside the medicine bottle 5, so, just gas and ambient atmos in the medicine bottle 5 have been communicated with.

When dispensing instrument injected waters for injection or diluent in the medicine bottle 5, water for injection or diluent were successively through liquid-through hole 31 with cross liquid passage 11 and be injected in the medicine bottle 5, and the medicinal liquids in the medicine bottle 5 increase, air in the compression medicine bottle 5.By air slot 23 gases at high pressure are discharged when producing malleation in the medicine bottle 5, up to bottle internal gas pressure and ambient pressure balance.When dispensing instrument extracts medicinal liquid in medicine bottle 5, produce negative pressure in the needle stand 3, gas is pressed into medicinal liquid the dispensing instrument from crossing liquid passage 11 and liquid-through hole 31 in the medicine bottle 5, and bottle giving drugs into nose liquid measure reduces, and the pressure in the medicine bottle 5 reduces.When producing negative pressure in the medicine bottle 5, ambient atmos replenishes in the medicine bottle 5 by air slot 23, with balance medicine bottle 5 inner and outer air pressures.

When shank 1 and loop bar 2 inserted when dark, when just the air slot 23 of loop bar 2 all was positioned at medicine bottle 5, the shoulder block 21 that plays position-limiting action leaned on plug 4.Because the 21a of gas passage excessively on the shoulder block 21 is through the sidepiece of annular shoulder block 21, even if therefore the inner face and the plug 4 of shoulder block 21 lean, the sidepiece of shoulder block 21 still has and the extraneous opening that communicates.By this opening with cross gas passage 21a with air slot 23 with extraneously be communicated with to get up.

Embodiment two, and loop bar 2 is integral structure with shank 1, and is as a whole, are equivalent to direct sidepiece at shank 1 and offer air slot 23.Certainly, this time, shank 1 fluting position thickness was thicker.

Specific embodiment described herein only is that this utility model spirit is illustrated.This utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Claims

1. syringe needle that makes up a prescription, comprise shank (1) with liquid passage (11) and needle stand (3) with liquid-through hole (31), one end of described shank (1) and needle stand (3) are connected, and the liquid passage (11) of crossing of shank (1) is communicated with the liquid-through hole (31) of needle stand (3), it is characterized in that, be socketed with the loop bar (2) of a tubular on the described shank (1), the sidewall of described loop bar (2) offers one can make the air guide channel that gas communicates with ambient atmos in the medicine bottle (5) when making up a prescription.

2. a kind of syringe needle that makes up a prescription according to claim 1 is characterized in that, described air guide channel is air slot (23), and this air slot (23) axially is opened in the outer surface of loop bar (2).

3. a kind of syringe needle that makes up a prescription according to claim 1 and 2 is characterized in that, has on the described loop bar (2) to make things convenient for loop bar (2) together to insert the interior spigot surface (22) of medicine bottle (5) with shank (1).

4. a kind of syringe needle that makes up a prescription according to claim 3 is characterized in that described spigot surface (22) is tapered, and is positioned at the end that loop bar (2) inserts an end of medicine bottle (5).

5. a kind of syringe needle that makes up a prescription according to claim 1 and 2 is characterized in that, is fixed with outstanding laterally shoulder block (21) on the described loop bar (2).

6. a kind of syringe needle that makes up a prescription according to claim 5 is characterized in that, described shoulder block (21) is arranged on the end of loop bar (2) and is connected with needle stand (3) ringwise.

7. a kind of syringe needle that makes up a prescription according to claim 6 is characterized in that, offer on the described shoulder block (21) run through shoulder block (21) sidepiece cross gas passage (21a), this is crossed gas passage (21a) and is communicated with and is communicated with atmosphere all the time with above-mentioned air guide channel.

8. a kind of syringe needle that makes up a prescription according to claim 6 is characterized in that, described shoulder block (21) is fixed together by binding agent with needle stand (3).

9. a kind of syringe needle that makes up a prescription according to claim 1 and 2 is characterized in that described loop bar (2) closely is socketed on the shank (1), and both are fixed together.