CN101428159A

CN101428159A - Injector without needle for animals

Info

Publication number: CN101428159A
Application number: CNA2007101580644A
Authority: CN
Inventors: 于丽寒; 谢志忠; 王孝军; 于彤; 范立民; 王琪
Original assignee: ASTRONAUTIC XINGUANG LOW TEMP VESSELS Manufacturing Co Ltd SHENYANG
Current assignee: ASTRONAUTIC XINGUANG LOW TEMP VESSELS Manufacturing Co Ltd SHENYANG
Priority date: 2007-11-09
Filing date: 2007-11-09
Publication date: 2009-05-13
Anticipated expiration: 2027-11-09
Also published as: CN101428159B

Abstract

The invention relates to a veterinary needleless injector comprising drug containing tube components, an injector and a high pressure air supply; the injector includes a magnetic thrust piston arranged inside a cavity on a housing; a pure iron locating part corresponding to the magnetic thrust piston is arranged in the cavity; a tail rod end protrudes out of the housing; the rod end of the magnetic thrust piston is movably connected with a piston rod of an injection piston inside an injection syringe arranged at the front end of the housing; an injection head is arranged at the front end of the injection syringe; a drug inlet port on one side is connected with the outlet port of the drug containing tube components through pipe fittings; a switch plug is arranged at one end of the inside of a through cavity at the lower part of the housing; the outer end is in contact with the side surface of a trigger; a hollow gas circuit movable switch plug corresponding to the switch plug is arranged on the other side in the cavity; and a spring is arranged at the tail end which is connected with the high pressure air supply through pipe fittings. The invention has the advantages of rapidity, high efficiency, no infliction of pain on animals, continuous injection, accurate control of dosage, controllable and adjustable injection pressure for livestock, effective prohibition against cross infection and good safety.

Description

Injector without needle for animals

Technical field

The present invention relates to a kind of injector for medical purpose, particularly a kind of injector without needle for animals is that units such as livestock-raising field, veterinary's outpatient service and pets hospital are to domestic animal vaccination or the first-selected syringe of treatment injection.

Background technology

Along with the development of herding cause, also obtain swift and violent development such as all kinds of plants such as beef cattle, milch cow, pig, sheep and professional raising farmer.Improve the people's quality of life for the market boom, the dining table that enriches people and brought into play positive effect.Each plant is for providing the high-quality livestock products to market, prevent or reduce the generation epidemic infection illness, and all will inoculate all kinds of corresponding vaccines every year in good time, normally with band needle applicator for animals every domestic animal is carried out vaccination.As everyone knows, this traditional injection system, thick needle thrusts Intradermal and causes suffering to animal, and the situation of also often therefore doing folding, looper head happens occasionally; Have again because frequent loading and unloading syringe needle workload is big, and the efficient consuming time of taking a lot of work is low, disinfect, because the big carelessness slightly of amount also stays the hidden danger of cross infection easily although syringe needle all passes through.There are above-mentioned all drawbacks based on traditional syringe, cause the concern of relevant departments and R﹠D institution already, also drop into the research staff and tackle key problems, but regrettably up to the present do not see the report that successfully solves as yet.What make that livestock-raising enterprise and doctor veterinary have no way out still continues to use traditional syringe year after year so far.

Summary of the invention

The present invention is directed to above-mentioned problems of the prior art, a kind of injection efficiency height, animal no pain are provided, can have injected continuously, dose precise control, injection promote pressure controlled, adjustable, substantially eliminate cross infection, processing ease, be suitable for muscle and hypodermic injector without needle for animals.

The objective of the invention is to realize by the following technical solutions:

Comprise the Sheng pencil assembly, syringe and the high-pressure air source that place on the housing, its described syringe comprises the magnetic thrust piston that places intracavity on the housing, the pure iron locating part is opposite to intracavity mutually with the magnetic thrust piston, the foot piece end stretches out housing, magnetic thrust piston rod end flexibly connects by adapter sleeve and the piston rod that is located at the injection ram in the syringe of housing front end, the front end of syringe is provided with injection head, and the feeding opening of a side links to each other with the outlet of containing the pencil assembly by pipe fitting; The switch thromboembolism is located at the end in the lower housing portion cavity, the outer end contacts with the side of trigger, the relative opposite side of being located at intracavity of gas circuit movable switch bolt of hollow with the switch thromboembolism, tail end is provided with spring, and link to each other with high-pressure air source by pipe fitting, be provided with the gentle path II of gas path I up and down between two chambeies.

Be provided with check valve in the feeding opening on the described syringe.

The bar portion of described pure iron locating part is the dose adjusting screw(rod), combines with the housing screw thread.

Be provided with check valve in the injection port on the described injection head, the injection aperture is 0.20-0.26mm.

The front end of described injection head also is provided with a plate-like skin stretcher.

The described high-pressure air source high pressure air bottle that is of portable form, a kind of in carbon dioxide gas, nitrogen and the argon.

Advantageous effect of the present invention is as follows:

Compared with prior art, because adopting gases at high pressure is power, moment promotes injection ram fast the micropore of medicine from injection head is ejected, transdermal makes medicinal liquid form ultra tiny drug flow, realizes technical measures such as subcutaneous or intramuscular injection, and through evidence have rapidly and efficiently, the animal no pain, and can inject continuously, dose precise control, injection pressure are controllable according to different domestic animals, effectively stop cross infection, and safety is good; The general staff trains a little and can both inject in addition, saves the medical worker.Implement to be beneficial to and to apply easily.

Description of drawings

Fig. 1 is a main TV structure sketch map of the present invention.

Working state schematic representation when Fig. 2 is injection.

Fig. 3 is the working state schematic representation after the injection.

Among the figure, 1. injection head, 2. syringe, 3. injection ram is 4. contained pencil assembly, 5. gas path I, 6. magnetic thrust piston, 7. gas path II, 8. pure iron locating part, 9. trigger, 10. switch thromboembolism, 11. housings, 12. shut off valve cover, 13. gas circuit movable switch bolt, 14. dose adjusting screw(rod)s, 15. high-pressure air source; 16. exhaust duct, 17. joint sleeves.

The specific embodiment

Embodiment

Content of the present invention is described in detail in conjunction with the accompanying drawings by embodiment.

Housing 11 as shown in Figure 1, Sheng pencil assembly 4 is loaded on the top of housing 11 by connector, the magnetic thrust piston 6 horizontal last intracavity of being located at housing 11, pure iron locating part 8 and the magnetic thrust piston 6 relative opposite sides that are loaded on the epicoele of housing 11, the dose adjusting screw(rod) 14 of afterbody stretches out outside the housing 11, the rod end of magnetic thrust piston 6 flexibly connects by joint sleeve 17 and the piston rod that is located at the injection ram 3 in the housing 11 front end syringes 2, syringe 2 front ends one side is provided with the feeding opening of installing check valve in it, link to each other with the outlet of containing the pencil assembly by pipe fitting, have the injection head 1 of penetrating the medicine hole and be loaded on the front end of syringe 2, be provided with check valve in the injection port, penetrating the medicine aperture is 0.20-0.26mm, and discous skin stretcher is loaded on the termination (not providing among the figure) of injection head 1.Have the slot that is respectively charged into injection ram 3 and magnetic thrust piston 6 on the sidewall of described joint sleeve 17; Switch thromboembolism 10 is loaded in the shut off valve cover 12 that is located at housing 11 cavity of resorptions one end, gas circuit movable switch bolt 13 1 ends of hollow are corresponding with switch thromboembolism 10, the tail end of the other end is provided with spring, and by pipe fitting with its on have a pressure regulator valve portable high-pressure source of the gas 15 link to each other, be provided with gas path I5 and gas path II7 between the upper and lower cavity of housing 11, the bottom of cavity of resorption is provided with waste gas and discharges the medial surface that outer exhaust duct 16, one ends of housing are hinged on the trigger 9 on the housing 11 and contact with the outer end of switch thromboembolism 10.Described Sheng pencil assembly 4 comprises having graduated Sheng pencil on it and inject piston; Be of portable form a kind of in high pressure air bottle, carbon dioxide cylinder, argon bottle and the nitrogen cylinder of described high-pressure air source 15.

When the present invention uses, will inject that air pressure transfers to the pressure that is complementary with it and vaccination packed into according to different domestic animal kinds and contain in the pencil assembly 4, regulating dose adjusting screw(rod) 14 is injectable after reaching predetermined dose.Open gas source switch, gases at high pressure enter from the passage of gas circuit movable switch bolt 13 and back down switch thromboembolism 10 and by gas path I5 magnetic thrust piston 6 is moved right and attract to contact with pure iron locating part 8 when reaching the magnetic force range distance, drive injection ram 3 moves right at this moment thereupon, and syringe 2 interior injecting cavities form negative pressure, predetermined dose is sucked injecting cavity from feeding opening, when rapid pulloff 9 until on earth the time, switch thromboembolism 10, gas circuit movable switch bolt 13 moves right in turn, switch thromboembolism 10 closes the path I5 that holds one's breath, then high pressure gas enters the cavity of pure iron locating part 8 from gas path II7, when the moment magnetic thrust piston of air pressure during greater than the captivation between magnetic thrust piston 6 and the pure iron locating part 86 produces propulsive explosive force left, promote injection ram 3 and fast the medicinal liquid transdermal is injected muscle, finish an intramuscular injection, meanwhile the waste gas in former chamber by gas path I5 outside exhaust duct 16 is released housings as shown in Figure 2, when unclamp trigger 9 as shown in Figure 3 medicinal liquid be inhaled into pending next injections such as injecting cavity again, go round and begin again.Subordinate list 1 is injection pressure and the injection type reference value of various domestic animals.

Different domestic animal injection pressures of table 1 and injection type reference value

Table 1

Attention: pressure does not surpass 20Kg.

Claims

1. injector without needle for animals, comprise the Sheng pencil assembly (4) that places on the housing (11), syringe and high-pressure air source (15), it is characterized in that described syringe comprises the magnetic thrust piston (6) that places housing (11) to go up intracavity, pure iron locating part (8) is opposite to intracavity mutually with magnetic thrust piston (6), the foot piece end stretches out housing (11), magnetic thrust piston rod end flexibly connects by the piston rod of the interior injection ram (3) of joint sleeve (17) and the syringe (2) that is located at housing (11) front end, the front end of syringe (2) is provided with injection head (1), and the feeding opening of a side links to each other with the outlet of containing pencil assembly (4) by pipe fitting; Switch thromboembolism (10) is located at the end in the cavity of housing (11) bottom, the outer end contacts with the side of trigger (9), the relative opposite side of being located at intracavity of the gas circuit movable switch bolt (13) of hollow with switch thromboembolism (10), tail end is provided with spring, and link to each other with high-pressure air source (15) by pipe fitting, be provided with the gentle path II of gas path I (5) (7) up and down between two chambeies.

2, injector without needle for animals according to claim 1 is characterized in that being provided with check valve in the feeding opening on the described syringe (2).

3, injector without needle for animals according to claim 1, the bar portion that it is characterized in that described pure iron locating part (8) is dose adjusting screw(rod) (14), combines with housing (11) screw thread.

4, injector without needle for animals according to claim 1 is characterized in that being provided with check valve in the injection port on the described injection head (1), and the injection aperture is 0.2-0.26mm.

5,, it is characterized in that the front end of described injection head (1) also is provided with a plate-like skin stretcher according to claim 1 or 4 described injector without needle for animals.

6, injector without needle for animals according to claim 1 is characterized in that described high-pressure air source (15) high pressure air bottle that is of portable form, a kind of in carbon dioxide gas, nitrogen and the argon.