CN201603202U - Cushion syringe - Google Patents

Abstract

The utility model discloses a cushion syringe which includes a sticking mechanism (5), an internal body (4) and a top cover (1); the internal body (4) is fixed on the back surface of the sticking mechanism (5) and includes a medicine bin (17) capable of holding liquid medicine; the bottom part of the medicine bin (17) is opened and downwards extends as a catheter (11); the catheter (11) penetrates the sticking mechanism (5) and continuously extends downwards; the top part of the medicine bin (17) is sealed by a septum (6); a guide pin (10) is fixedly arranged on the top cover (1), penetrates the septum (6) and enters the medicine bin (17); the head part of the guide pin (10) stretches out from the catheter (11); the guide pin (10) is tightly stuck with the catheter (11) and can move up and down in the catheter (11). The cushion syringe integrates the advantages of a hypodermic syringe and a venous syringe, has a simple structure, is convenient to be operated, can lead the medicine to be stably absorbed and has good absorption effect.

Description

A kind of buffering syringe

Technical field

This utility model relates to a kind of hypodermic buffering syringe that is used for.

Background technology

Injecting method at present commonly used mainly contains two kinds of subcutaneous injection and intravenous injections.

Hypodermic injection is exactly a method of medicinal liquid being injected subcutis.When carrying out subcutaneous injection, syringe relies on external force that medicinal liquid is injected in the subcutaneous tissue, and injection rate is very fast, and just can finish common several seconds.And medicinal liquid in entering human body after, general about 30 minutes vivo medicine concentrations reach summit, begin rapid reduction then.The advantage of hypodermic syringe is that injection operation is more convenient, and shortcoming is the drug absorption excessive velocities, can not be absorbed stably by human body.And the injection of some medicinal liquid does not fit into common hypodermic syringe.Such as, child's growth hormone injection, the injection of hepatitis B interferon, injection of insulin of diabetes patient or the like.The injecting liquid drug amount of the above-mentioned type is few, and will keep its injection process slow, lasting, just can reach best therapeutic effect.It is documented, diabetics is required at insulin injection half an hour before the meal, by the time have a meal and digest and assimilate, the blood glucose peak generally occurs in just after the meal about 1-2 hour, therefore do not wish that injected insulin plays a role very soon, otherwise blood sugar concentration is too high in the body, can cause life danger.

Intravenous injection is a kind of medicinal liquid to be injected the venous method, splash into " law of connected vessels " in (infiltration) blood by the pressure action of intravenous injector by medicinal liquid self, can directly inject medicinal liquid in the blood slowly, constantly, the advantage of intravenous injector is to make body inner liquid medicine concentration level average, longer duration does not have bigger Wave crest and wave trough.But this syringe construction complexity, it includes parts such as transfusion bottle, a whole set of pipeline and hard pin, and injection simultaneously is more time-consuming, per injection needs the time of several hrs, and need the medical worker of specialty to operate, patient oneself can not operate, and uses inconvenient.

The utility model content

The technical problems to be solved in the utility model is according to the above-mentioned deficiency of existing in prior technology, and a kind of simple in structure, easy to operate, buffering syringe that can make medicine smooth absorption and good absorbing effect is provided.

Solve technical scheme that this utility model technical problem adopted and be this buffering syringe comprise can with the fit body of human body skin applying, inside subject and top cover, described inside subject is fixed on the reverse side of fit body, but inside subject comprises the medicine storehouse of a splendid attire medicinal liquid, medicine storehouse bottom opening also extends to indwelling tube downwards, indwelling tube passes fit body to be continued to extend downwards, top, medicine storehouse is by the barrier film capping, be fixed with guide needle on the top cover, guide needle is passed barrier film and is entered the medicine storehouse, the needle section of guide needle is stretched out from indwelling tube, and guide needle and indwelling tube fit tightly and can move up and down in indwelling tube.

Preferably, described barrier film adopts elastomeric material to make, and this elastomeric material makes that barrier film is directed the pin puncture can auto-closing after withdrawing from, thereby medicinal liquid can not flow out from the puncturing hole of guide needle.Preferred barrier film adopts silicones to make.

More preferably, described top cover also has outside support outward, described outside support inwall is provided with track, the length direction of track is parallel with the direction of motion of guide needle, be provided with the firing button that can slide in orbit in the track, firing button is fixedlyed connected with cap base, firing button inside also is provided with back-moving spring, have key hole on the outside support, key hole is in track upper end place, when firing button when track upwards slides into the key hole position, firing button ejects under the effect of back-moving spring and is stuck in the key hole.

Further preferably, also be surrounded with main spring outside inside subject, an end of described main spring is fixed on the top cover, and the other end is fixed on the bottom of outside support.When guide needle enters subcutis, provide power-assisted by main spring to guide needle, the process of thrusting that makes guide needle fast and swift and violent, by injector's fundamental sensation less than pain.

Preferably; contaminated before using, and prevent that guide needle from causing secondary pollution after using for fear of guide needle, also can be provided with over cap at the front end of guide needle; over cap envelopes the leading section of whole outside support, and itself and outside support are by being threaded togather.

Further preferably, also can be with protective cap on the indwelling tube, protective cap its thickness for indwelling tube is bigger, can effectively protect indwelling tube, also provides effective support for inside subject simultaneously.

Outside support is set outside top cover, has following beneficial effect: the first, be convenient for carrying, when carrying resistance to compression crashproof, can play the effect of each parts in the protection outside support; The second, can make the structure of top cover inside be in aseptic condition all the time; The 3rd, in when injection, provide thrust by main spring, it is subcutaneous that guide needle is thrust fast, do not have pain, and can't see needle section when using, and is specially adapted to the child is injected; The 4th, guide needle effectively can be preserved after finishing using, to avoid the secondary blood contamination.

Preferably, described guide needle adopts hollow needle tubing, has relief hole on the guide needle, and relief hole is in the position between top cover and the barrier film.Like this, when guide needle when thrusting skin, its internal pressure is got rid of by relief hole, thrusts resistance thereby can further reduce.

Preferred described medicine storehouse be shaped as inversed-cone shape.

The area of described fit body both can also can be a bit larger tham or equal the area of inside subject bottom surface less than the area of inside subject bottom surface.The area of preferred fit body equals the area of inside subject bottom surface.

Wherein, fit body can be made up of non-woven fabrics and medical glue, also has antibacterial-anti-inflammatory drug on the preferred non-woven fabrics, with the isolating exterior antibacterial.

Preferred inside subject adopts transparent plastic material to make, even so that observe the situation of the medicinal liquid in the medicine storehouse.

Indwelling tube adopts the PE polythene material to make.Guide needle comprises the top layer that nook closing member is outer with being coated on nook closing member, and top layer and indwelling tube are close to, and described nook closing member is made by stainless steel material, and described top layer is made by plastic material.

Discover that the 9mm place is the most suitable position of carrying out injectable drug under the fat partially fell in 6mm place under the thin partially fell of build, build, carries out the liquid medicine injection good absorbing effect at these positions, the length of therefore preferred indwelling tube is 6-9mm, and caliber is 1mm; The length of guide needle is preferably 25-35mm, 30mm more preferably, and its caliber is 0.8mm.

Before this utility model buffering syringe uses is by guide needle inside subject and top cover to be linked together; After guide needle drive indwelling tube enters human body skin; upwards spur top cover; guide needle withdraws from human body skin; then guide needle is separated with inside subject; but guide needle and top cover and outside support still link together; over cap is spun on the screw thread of outside support, thereby can effectively preserves depleted guide needle, to avoid secondary pollution.After injection finishes, inside subject can be put back in outside support and the over cap in the lump together with indwelling tube and fit body and be preserved, as the recyclable plastics garbage disposal, its use environmental protection more that becomes.

Can load the medicinal liquid of 20 ius in this utility model cushions the medicine storehouse of syringe, i.e. 0.2 milliliter of left and right sides medicinal liquid, medicinal liquid are flowed through and can slowly be infiltrated subcutaneous tissue behind the indwelling tube that inserts subcutis in 3-4 hour.Find through test, for absorbing slow hepatitis B interferon, use this utility model buffering syringe, through the subcutaneous injection first time, after 3 hours, can measure interferon concentration in the blood, when carrying out for the second time and during injection for the third time (for the second time, for the third time injection process only need to add medicinal liquid by ordinary syringe toward the medicine storehouse in and get final product), blood internal interference element concentration continues to keep the therapeutic dose level, medicine is smooth absorption in vivo.

Simultaneously,, do not need external equipments such as transfusion bottle, therefore do not hinder and in injection process, carry out other activities by the injector because whole injection process is by fit body inside subject to be fitted on the skin to carry out.

Because there is a best subcutaneous injection position in the people to different builds, injection position is shallow, and skin swells easily, and causes medicine not absorb; Injection position is dark, because skin gos deep into the position blood capillary, nervous system is abundant, therefore pain is strong.When adopting common hypodermic syringe, because the insertion depth of entry needle is controlled by the operator in the common hypodermic syringe, has only veteran operator, could control good this optimal injection position and entry needle is inserted into this position, therefore common hypodermic syringe is had relatively high expectations to operator's experience.For this utility model, because it is changeless inserting the length of the indwelling tube of human body, only need select the indwelling tube of appropriate length before the injection at the people of different builds, the mouth of pipe of indwelling tube is rested on the optimal injection position, feasible injection is more accurate, also strengthen simultaneously the injection effect, reduced painful sense.And, cannot see syringe needle when using this syringe, this point is very important for initial injection person, child and the person of having a fainting spell during acupuncture treatment.In addition, provide power-assisted by main spring, the process that guide needle is thrust becomes fast and swift and violent, and fundamental sensation is less than pain.

This utility model buffering syringe has been concentrated the advantage of hypodermic syringe and intravenous injector, the shortcoming that does not have above-mentioned two kinds of syringes again, it is easy to operate, patient can oneself operate, and injection fast, no pain, medicinal liquid absorbs steadily, can keep high concentration medicine level effective, stable in the blood after the injection, improve curative effect, also reduced patient's frequency injection (only need carry out a shot, only need in the medicine storehouse, replenish medicinal liquid in the operating process of back and get final product) simultaneously, drug absorption is effective, thereby has improved patient's quality of life.

This utility model buffering syringe is used for subcutaneous injection, is specially adapted to the medicinal liquid that the multiple batches of frequent low dose of needs is injected, as children growth hormone, hepatitis B interferon, insulin etc.

Description of drawings

Fig. 1 is the structural representation of this utility model buffering syringe

Fig. 2 is the A-A cutaway view among Fig. 1

1-top cover 2-outside support 3-over cap 4-inside subject 5-fit body 6-barrier film 7-relief hole 8-button hole 9-track 10-guide needle 11-indwelling tube 12-back-moving spring 13-firing button 14-main spring 15-protective cap 16-screw thread 17-medicine storehouse

The specific embodiment

Below in conjunction with embodiment and accompanying drawing this utility model is described in further detail.

Following examples are indefiniteness embodiment of the present utility model.

Embodiment 1:

As shown in Figure 1, 2, in the present embodiment, this utility model buffering syringe comprises outside support 2, top cover 1, over cap 3, inside subject 4 and fit body 5.

Top cover 1 is coated on inside subject 4 outsides, and outside support 2 is outside top cover 1, and top cover 1, outside support 2 and over cap 3 are together to form an airtight aseptic separate space, jointly inside subject 1 are coated on its inside.

Inside subject 4 is fixed on the reverse side of fit body 5, but inside subject 4 comprises the medicine storehouse 17 of a splendid attire medicinal liquid.In the present embodiment, medicine storehouse 17 is an inversed-cone shape.In the present embodiment, the capacity in medicine storehouse is the 0.2-0.3 milliliter.

The intermediate openings of 17 bottoms, medicine storehouse also extends to indwelling tube 11 downwards, and wherein, indwelling tube 11 and medicine storehouse 17 bottom openings are made as one.Indwelling tube 11 passes fit body 5 backs and continues to extend downwards, and in the present embodiment, the length of indwelling tube 11 is 6-9mm, and its caliber size is 1mm.17 tops, medicine storehouse are by barrier film 6 cappings.

(its middle part, bottom with inside subject 4 is corresponding) is fixed with guide needle 10 at the middle part of top cover 1, guide needle 10 is passed barrier film 6 and is entered medicine storehouse 17, its needle section is stretched out from indwelling tube 11, and guide needle 10 fits tightly together and can move up and down in indwelling tube 11 with indwelling tube 11.

In the present embodiment, guide needle 10 adopts hollow needle tubing, has relief hole 7 on the guide needle 10, and relief hole 7 is in the position between top cover 1 and the barrier film 6.The length of guide needle 10 is for can be 25-35mm, and in the present embodiment, the length of guide needle 10 is 30mm, and its caliber size is 0.8mm.

Outside at indwelling tube 11 also is with protective cap 15, and there is a breach draw-in groove in the medicine storehouse near the 17 bottom opening places, and an end of protective cap 15 is located in this breach draw-in groove.Protective cap 15 is for the thickness of indwelling tube 11, and its thickness is bigger, with effective protection indwelling tube 11, and can play the effect of supporting whole inside subject 4.

Outside support 2 is coated on outside the top cover 1, and outside support 2 inwalls are provided with track 9, and the length direction of track 9 is parallel with the direction of motion of guide needle 10.Be provided with firing button 13 in the track 9, firing button 13 can slide in track 9, and firing button 13 is fixedlyed connected with top cover 1 bottom.Firing button 13 inside also are provided with back-moving spring 12 (back-moving spring 12 is in compressive state), externally have key hole 8 on the support 2, key hole 8 is in track 9 upper end places, when firing button 13 when track 9 upwards slides into the position of key hole 8, firing button 13 ejects under the effect of back-moving spring 12 and is stuck in the key hole 8.

Also be surrounded with main spring 14 (main spring 14 does not contact with inside subject 4) outside inside subject 4, main spring 14 is located in the top cover 1, and an end of main spring 14 is fixed on the top cover 1, and the other end is fixed on the bottom of outside support 2.

The length of track 9 is more longer slightly than indwelling tube 11, and like this, during extension spring 14, indwelling tube 11 and guide needle 10 can be retracted in the inside subject 4 fully, can't see syringe needle during use.In the present embodiment, the length of track 9 is 15mm.

Over cap 3 is located at the front end of guide needle 10, and over cap 3 envelopes the leading section of whole outside support 2, and links together by screw thread 16 with outside support 2.

In the present embodiment, for ease of observing the medicinal liquid situation in the medicine storehouse 17, whole inside subject 4 adopts transparent plastic material to make.Barrier film 6 adopts elastomeric materials to make, and this elastomeric material makes that barrier film 6 is directed the pin puncture can auto-closing after withdrawing from, such as adopting the medical grade silicone material.Fit body 5 is made up of non-woven fabrics and medical glue, has antibacterial-anti-inflammatory drug on the non-woven fabrics, with the isolating exterior antibacterial.Indwelling tube 11 adopts the PE polythene material to make.Protective cap 15 adopts the PVC plastic material to make.Guide needle 10 comprises the top layer that nook closing member is outer with being coated on nook closing member, and this top layer and indwelling tube 11 fit tightly together, and nook closing member is made by stainless steel material, and the top layer is made by plastic material.

During use; earlier over cap 3 is spun down from outside support 2; take off protective cap 15 on the main body 4 internally; upwards spur top cover 1; top cover 1 drives guide needle 10 upwards; guide needle 10 drive indwelling tubes 11 and and then drive whole inside subject 4 and move upward; firing button 13 moves upward along the length direction of track 9 thereupon; arrive button hole 8 places (this moment, guide needle 10 was retracted in the inside subject 4 fully) when firing button 13 moves upward, firing button 13 ejects and is stuck in the button hole 8 by button hole 8 under the effect of back-moving spring 12.At this moment, main spring 14 is in extended state under the pulling of top cover 1, reach user mode.The needle section of guide needle 10 is aimed at the skin surface that will inject, press firing button 13, firing button 13 reenters in the track 9, top cover 1 drives internal structures such as guide needle 10 and inside subject 4 and moves downward fast under the effect of main spring 14, drive indwelling tube 11 by guide needle 10 and thrust skin histology, because guide needle 10 and indwelling tube 11 is in conjunction with closely being in the same place, both can not break away from the process of thrusting.After guide needle 10 leads indwelling tube 11 to enter human body skin, firmly push top cover 1, make fit body 5 closely stick on skin surface.Fit body 5 just entirely is fixed on inside subject 4 on the skin surface like this.Upwards spur top cover 1 again, driving guide needle 10 by top cover 1 moves upward, guide needle 10 moves up in indwelling tube 11 and final and indwelling tube 11 disengagings, inside subject 4 is owing to fixedlying connected with fit body 5 so being left on the skin surface, and top cover 1 and the structures such as outside support 2 that are attached thereto are separated with inside subject 4.After the separation, over cap 3 is threaded onto on the outside support 2 by screw thread 16, and keeps properly, to avoid secondary pollution.

Before injection, there is not medicinal liquid in the medicine storehouse 17, when guide needle 10 is thrust skin, and after extracting guide needle 10, can adopt common syringe to thrust and lentamente medicinal liquid be injected 18 inside, medicine storehouse in the elastic diaphragm 6, until the full whole medicine storehouse 17 of medicinal liquid, extract syringe then, do not heave and depression is a standard with barrier film 6.Elastic force and subcutaneous tissue body fluid at elastic diaphragm 6 circulate under the combined effect of the negative pressure that is produced, and medicinal liquid can slowly be penetrated into inside of human body by indwelling tube 11 from medicine storehouse 17.After the time period situation that retains of noting observing medicine storehouse 17 inner liquid medicines at any time, when the medicinal liquid in finding medicine storehouse 17 is used up soon, can be once more in the medicine storehouse 17 additional medicinal liquids.

Find through test, injection 20 units (promptly 0.2 milliliter) insulin in the forward direction human body of having dinner, in 4 hours, insulin can smooth absorption, and the blood in human body in sugar level does not have than great fluctuation process.

Embodiment 2:

The difference of present embodiment and embodiment 1 is, the buffering syringe in the present embodiment does not comprise parts such as outside support 2, over cap 3, firing button 13, main spring 14, in the present embodiment other structures all with embodiment 1 in identical, repeat no more here.

The structure of the buffering syringe in the present embodiment is for embodiment 1, and its structure is more simple.When injecting, be that the active force of the hands by the operator thrusts guide needle 10 in the human body skin, use afterwards is similar to Example 1.

Claims (10)

1. one kind is cushioned syringe, it is characterized in that comprising the fit body (5) that to fit with human body skin, inside subject (4) and top cover (1), described inside subject (4) is fixed on the reverse side of fit body (5), inside subject (4) but comprise the medicine storehouse (17) of a splendid attire medicinal liquid, medicine storehouse (17) bottom opening also extends to indwelling tube (11) downwards, indwelling tube (11) passes fit body (5) to be continued to extend downwards, top, medicine storehouse (17) is by barrier film (6) capping, be fixed with guide needle (10) on the top cover (1), guide needle (10) is passed barrier film (6) and is entered medicine storehouse (17), the needle section of guide needle is stretched out from indwelling tube (11), and guide needle (10) fits tightly and can move up and down in indwelling tube (11) with indwelling tube (11).

2. buffering syringe according to claim 1 is characterized in that described barrier film (6) adopts elastomeric material to make, and this elastomeric material makes that barrier film (6) is directed the pin puncture can auto-closing after withdrawing from.

3. buffering syringe according to claim 2 is characterized in that barrier film (6) adopts silicones to make.

4. buffering syringe according to claim 1, it is characterized in that the outer outside support (2) that also is provided with of described top cover (1), described outside support (2) inwall is provided with track (9), the length direction of track (9) is parallel with the direction of motion of guide needle (10), be provided with the firing button (13) that can in track (9), slide in the track (9), firing button (13) is fixedlyed connected with top cover (1) bottom, firing button (13) inside also is provided with back-moving spring (12), have key hole (8) on the outside support (2), key hole (8) is in track (9) upper end place, when firing button (13) when track (9) upwards slides into key hole (8) position, firing button (13) ejects and is stuck under the effect of back-moving spring (12) in the key hole (8).

5. buffering syringe according to claim 4 is characterized in that also being surrounded with main spring (14) outside the inside subject (4), and an end of main spring (14) is fixed on the top cover (1), and the other end is fixed on the bottom of outside support (2).

6. buffering syringe according to claim 4, it is characterized in that also being provided with over cap (3) at the front end of guide needle (10), over cap (3) envelopes the leading section of whole outside support (2), and itself and outside support (2) link together by screw thread (16); Also be with protective cap (15) on the indwelling tube (11).

7. according to the described buffering syringe of one of claim 1-6, it is characterized in that described guide needle (10) adopts hollow needle tubing, have relief hole (7) on the guide needle (10), relief hole (7) is in the position between top cover (1) and the barrier film (6).

8. according to the described buffering syringe of one of claim 1-6, it is characterized in that described medicine storehouse (17) is inversed-cone shape.

9. according to the described buffering syringe of one of claim 1-6, it is characterized in that fit body (5) is made up of non-woven fabrics and medical glue, on the non-woven fabrics with antibacterial-anti-inflammatory drug; Inside subject (4) adopts transparent plastic material to make; Indwelling tube (11) adopts the PE polythene material to make; Guide needle (10) comprises the top layer that nook closing member is outer with being coated on nook closing member, and top layer and indwelling tube (11) are close to, and described nook closing member is made by stainless steel material, and described top layer is made by plastic material.

10. according to the described buffering syringe of one of claim 1-6, the length that it is characterized in that described indwelling tube (11) is 6-9mm, and caliber is 1mm; The length 25-35mm of guide needle (10), caliber are 0.8mm.

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