CN209137618U - A kind of combined type pre-charge injector - Google Patents

Abstract

The utility model discloses a kind of combined type pre-charge injector, the combined type pre-charge injector includes tube body, female Luer, push rod and partition, the female Luer is fixedly connected with the tube body, the push rod and the tube body are flexibly connected, the partition is arranged in the tube body, the tubular body is divided into the first cavity and the second cavity by the barrier action of the partition, first cavity is connect by the female Luer with the external world；The tubular body is divided into first cavity and second cavity by the way that the partition is arranged in the utility model, realizes that the pre-charge injector completes the injection of drug twice.

Description

A kind of combined type pre-charge injector

Technical field

The utility model relates to field of medicaments, and in particular to a kind of combined type pre-charge injector.

Background technique

Intravenous injection is a kind of common treatment means, and usually intravenous injection is to extract solvent (water for injection out with syringe Deng), then syringe needle penetrated into solute bottle (powder-injection or liquid drugs injection), then release solvent mix dissolving with solute, Human body could be carried out in admixing medical solutions to syringe injecting or to dosing in infusion bottle by finally extracting out again.

Mostly use pre-charge injector by will infuse in solute and solvent in advance filling solution conventional syringe operation greatly now The tired problem of mixed drug anesthesia before penetrating；But when encountering the case where successively need to carrying out different pharmaceutical injection, two precharges are respectively adopted Emitter is injected respectively will cause the unnecessary wasting of resources.

In view of the above drawbacks, the utility model creator obtains originally practical new finally by prolonged research and practice Type.

Utility model content

To solve above-mentioned technological deficiency, the technical solution adopted in the utility model is, provides a kind of combined type precharge Emitter, the combined type pre-charge injector include tube body, female Luer, push rod and partition, the female Luer and the tube body It is fixedly connected, the push rod and the tube body are flexibly connected, and the partition is arranged in the tube body, pass through the resistance of the partition The tubular body is divided into the first cavity and the second cavity every effect, first cavity is by the female Luer and outside Boundary's connection.

Preferably, the tube body includes several sliding rails, the partition includes notch, and the sliding rail and notch cooperation are set It sets, the close connection of liquid of the partition and the tube body is realized by the mating connection of the sliding rail and the notch.

Preferably, the tube body further includes diversion division, the diversion division is arranged on the sliding rail, and the diversion division is transversal Face size is less than the sliding rail cross sectional dimensions.

Preferably, the female Luer includes gradual change chamber and pin hole chamber, first cavity passes through the gradual change chamber and institute State the connection of pin hole chamber.

Preferably, the gradual change chamber cross-sectional shape is provided in round, the gradual change chamber diameter is by the inner cavity to institute It states and is gradually become smaller on pin hole cavity direction.

Preferably, the partition includes diaphragm body, the diaphragm body is set as circular cone shape, and the diaphragm body is thick Degree is less than the gradual change chamber radical length, and the diaphragm body minimum cross sectional diameter is equal to the needle bore diameter.

Preferably, the partition includes connector, the notch is arranged on the connector.

Preferably, the connector includes extension and sealing, the extension and the sealing form the slot Mouthful, the sliding rail includes interconnecting piece and fixed part, and the fixed part is fixedly connected by the interconnecting piece with the tube body, described Notch and sliding rail dimensional fits setting.

Preferably, the extension is fixed in the groove formed by the interconnecting piece and the fixed part.

Preferably, the fixed part cross-sectional shape be preferably arranged to it is trapezoidal.

It, will be in the tube body by the way that the partition is arranged compared with the prior art the utility model has the beneficial effects that: 1 Part is divided into first cavity and second cavity, realizes that the pre-charge injector completes the injection of drug twice；2, lead to The connection for crossing the sliding rail and the notch, the close connection of liquid for realizing the partition and the tube body and the partition are described It manages intracorporal free to slide；3, by the way that diversion division is arranged, realize the difference of drug in first cavity and second cavity Injection；4, avoid the combined type pre-charge injector from completing injection by the setting of the shape of the gradual change chamber and the diaphragm body After generate that big medicine amount liquid is remaining, reduce the accurate control increased while the medical fluid wasting of resources to injecting liquid drug amount.

Detailed description of the invention

Fig. 1 is the topology view of the utility model combined type pre-charge injector；

Fig. 2 is the topology view of partition described in the utility model combined type pre-charge injector；

Fig. 3 is the local structure view of the utility model combined type pre-charge injector.

Digital representation in figure:

1- tube body；2- female Luer；3- push rod；4- partition；11- guide way；The first cavity of 12-；The second cavity of 13-；14- Diversion division；21- gradual change chamber；22- pin hole chamber；31- piston；41- diaphragm body；42- connector；111- interconnecting piece；112- is fixed Portion；421- sealing；422- extension.

Specific embodiment

Below in conjunction with attached drawing, the above and other technical features and advantages of the present invention are described in more detail.

Embodiment one

As shown in FIG. 1, FIG. 1 is the topology views of the utility model combined type pre-charge injector.The utility model combined type Pre-charge injector includes tube body 1, female Luer 2, push rod 3 and partition 4, and the female Luer 2 is fixedly connected on the tube body 1 Lower end, the push rod 3 and the tube body 1 are flexibly connected, and the partition 4 is arranged in the tube body.

The tube body 1 includes inner cavity, guide way 11 is arranged on the surface of internal cavity, if the guide way 11 is preferentially set as Dry sliding rail, the sliding rail cross section are set as one of triangle, rectangle, semicircle and other Reasonable Shapes or a variety of；It is single The whole cross sectional dimensions of a sliding rail is consistent.Piston 31, the piston 31 and the partition 4 is arranged in the push rod 3 It is respectively provided with notch, the notch and sliding rail dimensional fits setting, it is real by the mating connection of the notch and the sliding rail The existing close connection of liquid between the piston 31, the partition 4 and the tube body 1；By the connection of the notch and the sliding rail, Realize that the partition 4 is free to slide in the tube body 1；The sliding rail sets at least to 4, and along the axis of the tube body 1 Wire loop is uniformly arranged, and is reduced the partition 4 and is answered 4 deflection of partition caused by unbalance stress；Pass through the barrier of the partition 4 The inner cavity is divided into the first cavity 12 and the second cavity 13 by effect, first cavity 12 by the female Luer 2 and External world's connection.

The female Luer 2 includes gradual change chamber 21 and pin hole chamber 22, and the inner cavity passes through the gradual change chamber 21 and the needle Vestibule 22 connects the internal injection pipeline for forming the combined type pre-charge injector, and 21 cross-sectional shape of gradual change chamber is preferably set It is set to circle, the gradual change chamber diameter gradually becomes smaller on by the inner cavity to 22 direction of pin hole chamber, forms circular cone shape Cavity；The shape setting of the gradual change chamber 21 guarantees that the partition 4 is moved to the partition 4 when 2 position of female Luer Position is fixed.

Diversion division 14 is arranged in the sliding rail lower end, and 14 cross sectional dimensions of diversion division is slightly less than sliding rail cross section ruler Very little, when the partition 4 is moved to the diversion division 14, the notch and the diversion division 14 of the partition 4 generate gap.

As shown in Fig. 2, Fig. 2 is the topology view of the partition.The partition 4 includes diaphragm body 41 and connector 42, The connector 42 is fixed in the diaphragm body 41, and the notch is arranged on the connector 42.The diaphragm body 41 are preferably arranged to circular cone shape, the pointed end of the diaphragm body 41,41 thickness of diaphragm body be slightly less than it is described gradually Become 21 radical length of chamber, the 41 lower end surface diameter of diaphragm body is equal to 22 diameter of pin hole chamber.41 material of diaphragm body Material is preferably arranged to hard material, avoids the partition 4 from causing overall deformation when being squeezed by medical fluid and leads to 4 He of partition The destruction of the close connection status of liquid between the tube body 1；The connector 42 is preferably arranged to the flexible materials such as rubber, described in guarantee The close connection of liquid between the partition 4 and the tube body 1 is realized in close contact between connector 42 and the sliding rail.

When first cavity 12 and second cavity 13 are stored with medical fluid respectively, by squeezing the push rod 3, institute State the sliding rail slide downward described in the extruding lower edge of medical fluid in second cavity 12 of partition 4, first cavity 12, it is described gradually Become chamber 21 and the pin hole chamber 22 forms the first injection canal, the intracorporal medical fluid of the first chamber is made in the extruding of the partition 4 It is flowed out with lower by first injection canal；When the partition 4 is moved to 14 position of diversion division, described first is completed The injection of medical fluid in cavity 12；Since the shape of the gradual change chamber 21 is arranged, the partition 4 is fixed on the tube body 4 and institute At the link position for stating female Luer 2；When the partition 4 is fixed on the link position of the tube body 4 and the female Luer 2 Place, generates gap, the diaphragm body 41 and the gradual change chamber 21 between the notch and the diversion division 14 of the partition 4 Annular housing is formed, it is logical that second cavity 13, the gap, the annular housing and the pin hole chamber 22 form the second injection Road, the medical fluid in second cavity 13 pass through second injection canal and flow out；When the piston 31 is squeezed in the push rod 1 When the lower and partition 4 contacts, the injection of medical fluid in second cavity is completed.

Due to the diaphragm body 41 shape be arranged, greatly reduce when the partition 4 be fixed on the tube body with Space when at the link position of the female Luer between the diaphragm body 41 and the gradual change chamber 21 guarantees described first Medical fluid in cavity 12 all flows out, and big medicine amount liquid remnants, drop are generated after avoiding the combined type pre-charge injector from completing injection Increase the accurate control to injecting liquid drug amount while the low medical fluid wasting of resources.

Embodiment two

As shown in figure 3, Fig. 3 is the local structure view of combined type pre-charge injector described in embodiment two.Embodiment two It being further improved on the basis of example 1, specific improvements are that the sliding rail includes interconnecting piece 111 and fixed part 112, The connector 42 includes extension 422 and sealing 421, and the fixed part 112 passes through the interconnecting piece 111 and the tube body 1 is fixedly connected, and the extension 422 and the sealing 421 form the notch, the notch and the sliding rail dimensional fits Setting.

111 cross-sectional shape of interconnecting piece is preferably arranged to rectangle, and 112 cross-sectional shape of fixed part may be configured as Circle, rectangle, trapezoidal or other Reasonable Shapes, 112 cross-section width dimension of fixed part are greater than 111 width of interconnecting piece Size, causes the tube body 1, the interconnecting piece 111 and the fixed part 112 to form groove, and the extension 422 is arranged in institute It states in groove.

It is carrying out that it is flat not can guarantee the 4 force-bearing surfaces each position pressure of partition in injection process using syringe , by the way that the extension 422 is arranged and the extension 422 is fixed on by the interconnecting piece 111 and the fixed part 112 In the groove formed, reinforces the sliding rail to the connection effect of the partition 4, improve the partition 4 in moving process Stability, avoid run-off the straight in the case where unbalance stress of partition 4, increase the reality of the combined type pre-charge injector Use effect.

112 cross-sectional shape of fixed part is preferably arranged to trapezoidal, and the fixed part 112 of preferable shape is realizing institute It states sliding rail and while the partition 4 is stably connected with, optimizes the contact condition of the sliding rail and the partition 4, avoid because of addition The fixed part 112 and caused by the sliding rail and 4 contact area of the partition increase considerably, guarantee the partition 4 in institute State good sliding mode on sliding rail.

The above is only the preferred embodiment of the present invention, is merely illustrative for the utility model, and It is unrestricted.Those skilled in the art understand that can be to it in the spirit and scope defined by the utility model claims Many changes, modifications, and even equivalents are carried out, but all will fall within the protection scope of the utility model.

Claims (10)

1. a kind of combined type pre-charge injector, which is characterized in that including tube body, female Luer, push rod and partition, described Rule is connect Head is fixedly connected with the tube body, and the push rod and the tube body are flexibly connected, and the inner cavity of the tube body is arranged in the partition, The inner cavity of the tube body is divided into the first cavity and the second cavity by the barrier action of the partition, first cavity is logical The female Luer is crossed to connect with the external world.

2. combined type pre-charge injector as described in claim 1, which is characterized in that the tube body includes several sliding rails, described Partition includes notch, and the sliding rail and the notch are equipped with, and is realized by the mating connection of the sliding rail and the notch The close connection of the liquid of the partition and the tube body.

3. combined type pre-charge injector as claimed in claim 2, which is characterized in that the tube body further includes diversion division, described Diversion division is arranged on the sliding rail, and the diversion division cross sectional dimensions is less than the sliding rail cross sectional dimensions.

4. combined type pre-charge injector as described in claim 1, which is characterized in that the female Luer includes gradual change chamber and needle Vestibule, first cavity are connect by the gradual change chamber with the pin hole chamber.

5. combined type pre-charge injector as claimed in claim 4, which is characterized in that the gradual change chamber cross-sectional shape is set as Circle, the gradual change chamber diameter gradually become smaller on by the inner cavity to the pin hole cavity direction.

6. combined type pre-charge injector as claimed in claim 5, which is characterized in that the partition includes diaphragm body, described Diaphragm body is set as circular cone shape, and the diaphragm body thickness is less than the gradual change chamber radical length, and the diaphragm body is most Small cross-sectional diameter is equal to the needle bore diameter.

7. combined type pre-charge injector as claimed in claim 2, which is characterized in that the partition includes connector, the slot Mouth is arranged on the connector.

8. combined type pre-charge injector as claimed in claim 7, which is characterized in that the connector includes extension and sealing Portion, the extension and the sealing form the notch, and the sliding rail includes interconnecting piece and fixed part, and the fixed part is logical It crosses the interconnecting piece to be fixedly connected with the tube body, the notch and sliding rail dimensional fits setting.

9. combined type pre-charge injector as claimed in claim 8, which is characterized in that the extension is fixed on by the connection In the groove that portion and the fixed part are formed.

10. combined type pre-charge injector as claimed in claim 9, which is characterized in that the fixed part cross-sectional shape setting It is trapezoidal.