CN101417158B - Continuous medicine-filling injector - Google Patents

Abstract

The invention discloses a continuous drenching injector, which is applicable to prevention and therapeutic drenching and injection of livestock, poultry and fed wild animals. The continuous drenching injector comprises a small handle, a large handle, a cylinder body, and a pistol-typed structure which is arranged at the front end of the cylinder body and consists of joints which are used for connecting drenching pipe components or injection heads; wherein, the cylinder body is connected with the upper part of the large handle by a connection part; the lower part of the large handle and the small handle are internally provided with the same main spring and connected with each other by a connection pin and a pin buckle; the cylinder body and the large handle are respectively and internally provided with a piston and a piston connection rod which are provided with O-shaped sealing rings; the rear end of the piston connection rod is provided with a channel; the other end of the small handle is embedded into the channel; the upper part of the large handle corresponding to the back part of the small handle at the end is provided with a dosage adjusting net and a thread; and the internal side of the small handle is provided with a liquid suction device which is connected with the piston connection rod by the thread. The continuous drenching injector has the advantages of precise dosage, convenient use of the piston-typed structure, comfortable hand-feeling, light weight of product, good anti-corrosion performance and the like.

Description

Continuous medicine-filling injector

Technical field

The invention discloses a kind of continuous medicine-filling injector, be applicable to domestic animal, poultry, and the prevention of wild letting animals feed and therapeutic injection.

Background technology

The disclosed instrument used for injection to the animal drug administration by injection mainly contains following several types in the prior art: all-glass syringe, Luer's syringe, plastic injector, continuous injector, transfusion device, dartlike weapon syringe.

Wherein, all-glass syringe is made up of piston and trocar sheath, time spent inserts piston in the trocar sheath, utilize hand-power driven plunger liquid medicine injection, but need careful operation because of quality is fragile, be used for ear vein injection of pig and the injection of small test animal more,, be unfavorable for promoting so this syringe is confined to the very little scope of application.

Luer's syringe, this structure comprises metal sleeve, its front end is an injection head, use for connecting syringe needle, shell is one to have the metal sleeve of slotted hole, interior dress is the glass tubing of size suitably, the connection part of glass tubing front and back end and injection head and sleeve glass tubing fixed screw respectively is lined with an elastic tape, when tightening fixed screw, the glass tubing two ends get final product driving fit, piston is that two ends respectively are made up of several layers of fixed elastic tape of metal stator folder, and the rotary-piston regulating handle can make elastic tape compress or loosen, thus the regulating piston diameter, make it to fit tightly with glass, with the capacity regulating screw, be used for limiting institute's expense on the piston scale bar, holding handle system points the fixedly position of syringe when injecting.This syringe is mainly used under the animal skins, intramuscular injection, be to use maximum syringes, but the compensating roller difficulty of the piston of this syringe, cause liquid leakage easily, so that consumption is inaccurate, the distance when being filled medicinal liquid between holding handle and the piston regulating handle is excessive, and some point short, the operator that hand-power is little is difficult to control, Chang Yinwei animal disturbance and the defective that causes this section of syringe needle or syringe to drop.

The similar of continuous injector is in Luer's syringe, different is that a spring assembly is arranged in the handle, every injection once, handle will automatically reset, and at the regressive medicinal liquid that sucks simultaneously to glass tubing, so can do continuous injection, the continuous injector of the prior art is used for low dose of protective inoculation more.

Its shape of dartlike weapon syringe is as pistol, in spring assembly is housed, the plastic injector that will be similar to the dartlike weapon sample by the compression spring during use ejects and to thrust by the injection site, and this syringe only is used for the anesthesia of violent animal, can not carry out the injection of heavy dose of common drug, the scope of application is limited to.

In view of this, developing and a kind ofly conveniently control, can arbitrarily change direction of operating, adapt to the syringe of displacement, has been vast veterinary work person's eager needs.Though and all-glass syringe consumption in the past is accurate, need not the regulating piston degree of tightness, it has the fragile broken easily shortcoming of quality again; Though Luer's syringe has overcome the shortcoming of all-glass syringe,, need regulating piston, leak easily, and volume is heavily controlled difficulty; The dartlike weapon syringe is only limited to the anesthesia of wild animal; One more plastic injector in the prior art, but this kind syringe can't be applied in the veterinary clinic because inject time is long; Therefore develop a kind of laborsavingly, safe, accurate, of many uses and sturdy and durable, particularly promptly can be used for perfusion, can realize that again the multi-functional poultry of injecting is exactly a goal of the invention of the present invention with injection device.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, purpose is to provide a kind of dosage accurate, and pistol-type structure is convenient to be used, comfortable feel, the continuous medicine-filling injector that safety is firm.

For realizing above purpose, the technical solution used in the present invention is: a kind of continuous medicine-filling injector, it is characterized in that: comprise miniature lever, big handle and cylindrical shell, and the front end of cylindrical shell is provided with the pistol-type structure that the union joint that is used to connect drug tube assembly or injection chieftain is formed, its middle cylinder body links to each other by connector with the top of big handle, same main spring is installed and is buckled in the junction in the bottom of big handle and the miniature lever and link to each other by connecting pin and pin, be respectively equipped with the piston and the piston brace rod of band " O " RunddichtringO in cylindrical shell and the big handle top, the rear end of piston brace rod is provided with groove, in the other end embedded groove of miniature lever, the big handle top that should hold the miniature lever rear is equipped with dosage adjusting nut and screw thread, and the miniature lever inboard is provided with the liquid sucking device that links to each other by nut with piston brace rod.The present invention further is set to:

Described liquid sucking device comprises imbibition joint, imbibition sebific duct and inserts in aspirating needle and return-air pin on the infusion vessel, wherein the upper end of imbibition joint and piston brace rod are by being threaded, the link that is piston brace rod is provided with external screw thread, the imbibition joint has female thread, both spirals are tightened and are got final product, the lower end of imbibition joint connects the imbibition sebific duct, and the imbibition sebific duct connects aspirating needle.The imbibition sebific duct passes the through hole of big handle bottom, aspirating needle is installed again, and then aspirating needle is inserted in infusion vessel, and the return-air pin also is inserted in infusion vessel.Flexibility by utilizing the imbibition sebific duct is not so that miniature lever can have influence on the conveying of medicinal liquid when promoting continuously.

Be provided with valve, soft little spring in the described imbibition joint imbibition joint, and the sealing ring that places the junction of imbibition joint and piston brace rod.Wherein, adopt the effect of soft little spring to be that the medicinal liquid that the imbibition syringe needle that the imbibition joint is linked to each other by the imbibition sebific duct quickens in the absorption infusion vessel passes to cylindrical shell, so that the output of continuous and exact dose.

Be provided with valve, hard little spring in the described union joint, and the sealing ring that places union joint and drug tube assembly or injection chieftain's junction.

Described piston and piston brace rod be for being threaded, and adopt the seccotine sealing at threaded joints.Apply seccotine and help the enhanced leaktightness effect, both guaranteed that medicinal liquid can not leak from the junction of piston and piston brace rod, avoided again because of the long-term phenomenon of becoming flexible with the piston junction that promote continuously that piston brace rod causes.

The two ends of described connector have external screw thread and internal thread hole, and wherein external screw thread links to each other with the internal thread hole of big handle, and internal thread hole then is connected with the external screw thread of cylindrical shell, and connector also has interior projection.Adopt connector to help the fastness that is connected between reinforced tube and the big handle, increase the service life, and saving parts alternative costs.If adopt cylindrical shell directly to be connected with big handle, that petty its connecting portion has damaged, must change big handle and cylindrical shell simultaneously, and adopt cylindrical shell and big handle to be connected on the connector now, if the junction of cylindrical shell and connector has been damaged, only need to change cylindrical shell or cylindrical shell and two parts of connector and get final product, cost is little, and than cylindrical shell and the big direct-connected good sealing effect of handle.Connector also integral type is connected with interior projection, projection is pressed close to the outer wall of piston and piston brace rod in being somebody's turn to do, degree of balance when helping further guaranteeing the piston brace rod promotion, and the compressive strength of reinforced tube wall and big handle superstructure, and guarantee Stroke Control.

The top of described big handle also is provided with the stifle of detachable installation.The parts installation or removal that help in the big handle superstructure are convenient.

Described on the lower wall on big handle top, offer elongated slot from port to the bottom and the junction, top of big handle thereafter.Drive piston brace rod for miniature lever and promote piston, offer this elongated slot from the rear port of big handle, help the wider adjusting dosage of dosage adjusting nut, miniature lever is with the adjusting of dosage adjusting nut.

Described main spring is linked to connect to intersect by connecting pin and pin and is the formed two ends of basic point foot, and one end foot is fixed on the miniature lever, and the other end then foot is fixed in the bottom of big handle by elastic modulator.When realizing continuous medicine-filling or injecting continuously, by the elasticity that the parts elastic modulator is regulated main spring, the comfortable feel degree when using to satisfy different veterinarys.

Described connecting pin and pin are buckled the outer rubber hose sheath that is provided with.Not only attractive in appearance but also protect the stability of sheath internal structure.

In sum, it is accurate that the present invention has dosage; Integral body is pistol-type structure, and is easy to use; Product adopts the high-quality plastics material to make, and is in light weight, and good corrosion resistance is safe in utilization firm; The comfort level of feel has adopted especially and set up the elastic force governor motion on main spring, so that flexible spring degree of tightness comfort level during for the assurance injection; The present invention can directly pacify liquid bottle, and to relatively large animals and plants, epidemic prevention such as domestic animals and fowls all can be used, and the treatment large bolus injection, and perfusion liquid is also comparatively suitable.

Below in conjunction with description of drawings and specific embodiment the present invention is further detailed:

Description of drawings

Fig. 1 is the integrally-built partial cutaway schematic of the present invention;

Fig. 2, Fig. 3 are respectively A portion among Fig. 1, B portion enlarged drawing;

Fig. 4 is an injection chieftain structure for amplifying sketch map of the present invention;

Fig. 5 is an imbibition sebific duct structure for amplifying sketch map of the present invention;

Fig. 6 is an aspirating needle structure for amplifying sketch map of the present invention;

Fig. 7 is a return-air pin structure for amplifying sketch map of the present invention.

The specific embodiment

A kind of continuous medicine-filling injector, illustrate together in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7: compriseminiature lever 19, big handle 9 and cylindrical shell 5, and the front end of cylindrical shell 5 is provided with the integral body that the parts such as union joint 3 that are used to connect drug tube assembly 1 or injection chieftain 2 form and is pistol-type structure.Wherein big handle 9 is divided into top 91 and bottom 92, top 91 is tubular structure, the bottom is the structure that meets four intervals of tool concave arc shape of holding, link to each other byconnector 8 between the top 91 of big handle and the cylindrical shell 5, the two ends that areconnector 8 have external screw thread 81 and internal thread hole 82, wherein external screw thread 81 links to each other with the internal thread hole 93 of big handle 9, and 82 of internal thread holes are connected with the external screw thread 53 of cylindrical shell 5, andconnector 8 also has interior projection 83.Be communicated with and the same chamber of tool in the top 91 of cylindrical shell 5 and big handle, be provided with piston 7 in the cylindrical shell 5, be provided withpiston brace rod 10 in the top 91 of big handle, piston 7 andpiston brace rod 10 are for being threaded, the port that is piston 7 is provided with screw, and the port ofpiston brace rod 10 is provided with the external screw thread that is complementary with screw, after piston and piston brace rod are tightened, and adopts the seccotine sealing at piston and threaded joints.By 6 sealings of " O " RunddichtringO, " O " RunddichtringO 6 has pliability between piston 7 and the cylindrical shell 5, is made by elastomeric material, on routine techniques installation and piston 7.The rear end ofpiston brace rod 10 is provided with groove 101, the other end ofminiature lever 19 places groove 101, the rear that should holdminiature lever 19 is with dosage adjusting nut 11 in big handle top 91 fit ons, and this fragment position on big handle top 91 is provided with the screw thread 911 that is matched with the dosage adjusting nut, this end nut that is positioned on the lower wall on big handle top 91 is close tominiature lever 19, the bottom 92 and the top 91 of big handle are the integral type fixing mechanism, on the lower wall on big handle top 91, elongated slot 94 is offered with 91 junctions, top in bottom 92 from port thereafter to big handle, promote injection for miniature lever, the rear port on big handle top 91 is equipped with stifle 12, is detachable installation.In big handle bottom 92 and theminiature lever 19 same main spring 18 is installed, and the intersection point of main spring 18 is in the hinged place of big handle bottom 92 withminiature lever 19, and this hinged place is buckled 21 by connectingpin 20 and pin and is linked to each other, and connectingpin 20 and pin are buckled the 21 outerrubber hose sheaths 22 that are provided with.Main spring 18 is buckled 21 by connectingpin 20 and pin and is connected the crossing formed two ends of the basic point foot that is, one end foot is fixed on theminiature lever 19, and the other end then foot is fixed on the bottom 92 of big handle by elastic modulator 17.Elastic modulator 17 is used to regulate the elasticity of main spring 18, thereby satisfies the different comfortable feel degree of different veterinarys.Be positioned atminiature lever 19 inboards and be provided with the liquid sucking device 4 that links to each other by screw thread 16 with piston brace rod 10.Liquid sucking device 4 comprisesimbibition joint 41, imbibitionsebific duct 42 and inserts in aspiratingneedle 43 and return-air pin 44 on the infusion vessel 45, wherein the upper end ofimbibition joint 41 is connected by screw thread 16 withpiston brace rod 10, the lower end ofimbibition joint 41 connects imbibitionsebific duct 42, imbibitionsebific duct 42 connects aspiratingneedle 43, the through hole 921 that aspiratingneedle 43 passes big handle bottom 92 is inserted in infusion vessel 45, and return-air pin 44 also is inserted in infusion vessel 45.Be provided withvalve 411, softlittle spring 412 in the imbibitionjoint imbibition joint 41, and thesealing ring 413 that places the junction ofimbibition joint 41 and piston brace rod 10.Also be provided withvalve 34 and hardlittle spring 33 in the union joint 3, and thesealing ring 32 that places union joint 3 and drug tube assembly 1 or injection chieftain's 2 junction.Also be provided with the scale of expression dosage size on the cylindrical shell.

Use of the present invention is: aspirating needle and the insertion of return-air pin are equipped with on the infusion vessel of medicinal liquid, setting dosage size, the scale adjusting dosage adjusting nut of pressing on the cylindrical shell according to the consumption of single injection or perfusion gets final product, but the elastic modulator on the main spring also, meet individual's use feel to be adjusted to, promote miniature lever, course of action is that miniature lever drives piston brace rod and piston-advance is regained to the cylindrical shell Inner Front End, make in the preceding cylindrical shell of piston to be full of medicinal liquid, can inject continuously or perfusion.Be inject state when miniature lever advances to big handle bottom, miniature lever is a cylindrical shell imbibition state when replying.

Claims (9)

1. continuous medicine-filling injector, it is characterized in that: comprise miniature lever (19), big handle (9) and cylindrical shell (5), and the front end of cylindrical shell (5) is provided with the pistol-type structure that the union joint (3) that is used to connect drug tube assembly (1) or injection chieftain (2) is formed, its middle cylinder body (5) links to each other by connector (8) with the top (91) of big handle, the bottom (92) of big handle is also buckled (21) by connecting pin (20) and pin with the interior same main spring of installation of miniature lever (19) (18) and is linked to each other in the junction, be respectively equipped with the piston (7) and the piston brace rod (10) of band " O " RunddichtringO (6) in the top (91) of cylindrical shell (5) and big handle, the rear end of piston brace rod (10) is provided with groove (101), in the other end embedded groove (101) of miniature lever (19), the big handle top (91) that should hold miniature lever (19) rear is equipped with dosage adjusting nut (11) and screw thread (911), and miniature lever (19) inboard is provided with the liquid sucking device (4) that links to each other by screw thread (16) with piston brace rod (10); Described liquid sucking device (4) comprises imbibition joint (41), imbibition sebific duct (42) and inserts in aspirating needle (43) and return-air pin (44) on the infusion vessel (45), wherein the upper end of imbibition joint (41) is connected by screw thread (16) with piston brace rod (10), the lower end of imbibition joint (41) connects imbibition sebific duct (42), imbibition sebific duct (42) connects aspirating needle (43), the through hole (921) that aspirating needle (43) passes big handle bottom (92) is inserted in infusion vessel (45), and return-air pin (44) also is inserted in infusion vessel (45).

2. a kind of continuous medicine-filling injector according to claim 1, it is characterized in that: be provided with valve (411), soft little spring (412) in the described imbibition joint (41), and the sealing ring (413) that places the junction of imbibition joint (41) and piston brace rod (10).

3. a kind of continuous medicine-filling injector according to claim 1, it is characterized in that: be provided with valve (34), hard little spring (33) in the described union joint (3), and the sealing ring (32) that places union joint (3) and drug tube assembly (1) or injection chieftain's (2) junction.

4. a kind of continuous medicine-filling injector according to claim 1 is characterized in that: described piston (7) and piston brace rod (10) be for being threaded, and adopt the seccotine sealing at threaded joints.

5. a kind of continuous medicine-filling injector according to claim 1, it is characterized in that: the two ends of described connector (8) have external screw thread (81) and internal thread hole (82), wherein external screw thread (81) links to each other with the internal thread hole (93) of big handle (9), internal thread hole (82) then is connected with the external screw thread (53) of cylindrical shell (5), and connector (8) also has interior projection (83).

6. a kind of continuous medicine-filling injector according to claim 1 is characterized in that: the top (91) of described big handle (9) also is provided with the stifle (12) of detachable installation.

7. a kind of continuous medicine-filling injector according to claim 1 is characterized in that: on the lower wall on big handle top (91), the bottom (92) from port thereafter to big handle offers elongated slot (94) with junction, top (91).

8. a kind of continuous medicine-filling injector according to claim 1, it is characterized in that: described main spring (18) is buckled (21) by connecting pin (20) and pin and is connected the crossing formed two ends of the basic point foot that is, one end foot is fixed on the miniature lever (19), and the other end then foot is fixed in the bottom (92) of big handle by elastic modulator (17).

9. a kind of continuous medicine-filling injector according to claim 1 is characterized in that: described connecting pin (20) and pin are buckled (21) outer rubber hose sheath (22) that is provided with.

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