CN109999266A - Injection device - Google Patents

Abstract

The invention relates to an injection device, comprising a syringe joint and a puncture assembly, the syringe joint comprises a main body and a plurality of joint pipes, the main body has an injection cavity, and the plurality of joint pipes are respectively communicated with the injection cavity, the An injection lumen communicates with the piercing assembly. The inner diameter of the joint tube can be matched with the mastoid of the syringe, so that the syringe can be fixed, and multiple joint tubes can fix multiple syringes at the same time, which is convenient for the injection of various drugs. Resuscitate newborns from asphyxiation quickly and efficiently.

Description

Injection device

technical field

The invention relates to the field of medical instruments, in particular to an injection device.

Background technique

Neonatal asphyxia refers to the occurrence of intrauterine distress due to fetal hypoxia due to various prenatal, intrapartum or postpartum causes, or the occurrence of respiratory and circulatory disorders during delivery, resulting in no spontaneous breathing or failure to establish regular breathing. Hypoxemia, hypercapnia and acidosis are the main pathophysiological changes. Rapid and effective resuscitation of neonatal asphyxia has a very important impact on the survival and recovery of neonates.

At present, in neonatal resuscitation, small-sized ordinary scalp needles are mainly used for puncturing the umbilical vein. When injecting different medicines, the syringes need to be changed frequently, which may cause bacterial infection. One-handed operation is not flexible. Another resuscitator is needed to manually replace the syringe when the liquid is inhaled, which is time-consuming and labor-intensive, delays the time for medication, is not conducive to the rapid and effective asphyxia resuscitation of the newborn, and affects the resuscitation effect.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide an injection device to solve the problem of inconvenient operation when a scalp needle is used for neonatal resuscitation.

An injection device includes a syringe joint and a puncture assembly, the syringe joint includes a main body and a plurality of joint pipes, the main body has an injection cavity, the plurality of joint pipes are respectively communicated with the injection cavity, and the injection cavity is connected with the injection cavity. The piercing assemblies are in communication.

In one example, at least one of the plurality of joint pipes is provided with a backflow prevention valve.

In one example, the backflow prevention valve includes a stacked grid and a backflow prevention film, the backflow prevention film is disposed on a side of the grid close to the injection cavity, and the backflow prevention film is provided with Liquid fissures.

In one example, the joint pipe includes a first pipe body and a second pipe body, the first pipe body is provided on the main body, a limit table is provided in the first pipe body, and the second pipe body is The body is in contact with the limiting platform to limit the grid and the anti-reflux film between the first pipe body and the second pipe body.

In one example, the grid and the limiting platform of the first pipe body are integrally formed.

In one example, the anti-reflux film is an elastic film.

In one example, the liquid-passing crack is in-line and located in the middle of the anti-reflux film.

In one example, the grid has a first through hole in the middle and a plurality of second through holes arranged around the first through hole.

In one example, the injection device further includes a defoamer, the defoamer includes a casing and a defoaming sponge, the casing has a defoaming cavity and a liquid inlet communicated with the defoaming cavity and A liquid outlet, the liquid inlet communicates with the injection cavity, the liquid outlet communicates with the puncture assembly, and the defoaming sponge is arranged in the defoaming cavity.

In one example, a baffle is provided in the defoaming cavity, and the baffle divides the defoaming cavity into a buffer cavity and a accommodating cavity, and one end of the buffer cavity is open and connected to the injection cavity. The other end of the buffer cavity is closed, one end of the accommodating cavity is open and communicated with the injection cavity, the other end of the accommodating cavity is open to form the liquid outlet, and the defoaming sponge is provided in the accommodating cavity.

In one example, the puncture assembly includes a puncture needle, a flexible tube, a drawing handle and a fixing seat; the fixing seat has a flow cavity and a first opening, a second opening and a third opening respectively communicating with the flow cavity The first opening communicates with the injection cavity, the second opening and the third opening are arranged opposite to each other, and the pulling handle is arranged on the fixing seat and is located at the second opening, so The first end of the puncture needle is connected to the drawing handle through the second opening, the second end of the puncture needle is protruded from the fixing seat through the third opening, and the hose cover The puncture needle is arranged on the puncture needle and communicated with the third opening, the second end of the puncture needle protrudes from the hose, and the pulling handle is used to extract the puncture needle from the hose .

In one example, the hose is a plastic hose; and/or

The puncture needle is a metal wire.

In one example, a sealing ring is provided between the pulling handle and the fixing seat.

In one example, the fixing base is provided with a fixing clip.

In one example, the fixing clip is located between the second opening and the third opening of the fixing base.

Compared with the existing scheme, the present invention has the following beneficial effects:

The above-mentioned injection device is provided with a syringe joint with a plurality of joint tubes, and the inner diameter of the joint tube can be matched with the mastoid of the syringe, so that the syringe can be fixed, and the plurality of joint tubes can fix a plurality of syringes at the same time, which is convenient for various drugs to be injected separately. In the process of neonatal resuscitation, it is not necessary to replace the syringe with time and manpower, which is beneficial to resuscitate the neonate quickly and effectively. At least one of the joint pipes of the above-mentioned injection device is provided with a backflow prevention valve, which can prevent the backflow of the injection liquid.

Description of drawings

1 is a schematic structural diagram of an injection device according to an embodiment;

Fig. 2 is a partial exploded view of the injection device shown in Fig. 1;

Fig. 3 is the sectional view of the defoamer in the injection device shown in Fig. 1;

4 is a schematic structural diagram of a puncture assembly in the injection device shown in FIG. 1;

FIG. 5 is an enlarged view of part A in FIG. 4 .

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in FIG. 1 , an injection device 100 according to an embodiment of the present invention includes a syringe connector 170 and a puncture assembly.

Wherein, the syringe connector 170 includes a main body 171 and a plurality of connector tubes 172 . The main body 171 has an injection cavity that communicates with the puncturing assembly. The plurality of joint pipes 172 communicate with the injection chambers, respectively.

The above-mentioned injection device 100 is provided with a syringe joint 170 having a plurality of joint tubes 172. The inner diameter of the joint tube 172 can be matched with the mastoid of the syringe, so that the syringe can be fixed. The drugs are injected separately, and in the process of neonatal resuscitation, it is not necessary to spend time and manpower to replace the syringe, which is conducive to the rapid and effective asphyxia resuscitation of the neonate.

The number of the joint tubes 172 on the syringe joint 170 is multiple, such as three or four. In the specific example shown in FIG. 1 , the number of joint tubes 172 on the syringe joint 170 is three. Two of the joint pipes 172 are disposed opposite to each other on the main body 171 , and the other joint pipe 172 is perpendicular to the two joint pipes 172 to form a T-shaped structure. In this way, it is convenient for the operator to hold.

In one example, at least one joint pipe 172 is provided with a backflow prevention valve 173 . Preferably, each joint pipe 172 is provided with a backflow valve.

As shown in FIG. 2 , in one example, the backflow prevention valve 173 includes a grid 1731 and a backflow prevention film 1732 arranged in layers. The backflow prevention film 1732 is arranged on the side of the grid 1731 close to the injection cavity, and the backflow prevention film 1732 A liquid-passing crack 1733 is provided.

Further, as shown in FIG. 2 , in one example, the joint pipe 172 includes a first pipe body 1721 and a second pipe body 1722 , the first pipe body 1721 is disposed on the main body 171 , and a limiter is provided in the first pipe body 1721 The positioning platform 1723 and the second tube body 1722 are in contact with the positioning platform 1723 to limit the grid 1731 and the anti-reflux film 1732 between the first tube body 1721 and the second tube body 1722 . In this way, production and installation can be facilitated.

In the specific example shown in FIG. 2 , the grid 1731 and the limiting platform 1723 of the first pipe body 1721 are integrally formed. For example, the main body 171 and the first pipe body 1721 of the joint pipe 172 can be fabricated in one step by plastic injection molding.

The anti-reflux film 1732 is preferably an elastic film. For example, the anti-reflux film 1732 can be made of rubber such as silicone.

The shape of the backflow prevention film 1732 may be, but not limited to, a circle, an ellipse, a square, and the like.

In the specific example shown in FIG. 2 , the liquid-passing crack 1733 is in-line and is located in the middle of the anti-reflux film 1732 .

In the specific example shown in FIG. 2 , the grid 1731 has a first through hole in the middle and a plurality of second through holes arranged around the first through hole.

Please refer to FIG. 1 and FIG. 3 , in one example, the injection device 100 further includes a defoamer 180 . The defoamer 180 includes a casing 181 and a defoaming sponge 182 , and the casing 181 has a defoaming cavity and a defoaming cavity. The liquid inlet 183 and the liquid outlet 184 are communicated, the liquid inlet 183 is communicated with the injection cavity, the liquid outlet 184 is communicated with the puncture assembly, and the defoaming sponge 182 is arranged in the defoaming cavity.

As shown in FIG. 3 , further, in one example, a baffle 185 is provided in the defoaming cavity, and the baffle 185 divides the defoaming cavity into a buffer cavity 186 and an accommodating cavity 187 , and one end of the buffer cavity 186 Open and communicate with the injection cavity, the other end of the buffer cavity 186 is closed, one end of the accommodating cavity 187 is open and communicated with the injection cavity, the other end of the accommodating cavity 187 is opened to form a liquid outlet 184, and the defoaming sponge 182 is arranged in the accommodating cavity 184. in cavity 187. In this way, the injection liquid flows into the injection cavity, fills the buffer cavity, and flows into the accommodating cavity, and the defoaming sponge can exhaust more completely and effectively.

In the specific example shown in FIG. 3 , the baffle member 185 includes a first baffle plate 1851 and a second baffle plate 1852 , and the first baffle plate 1851 , the second baffle plate 1852 and the side wall of the defoaming cavity enclose a buffer cavity. The bubble removing cavity is a cylindrical cavity, the first partition plate 1851 extends axially along the cylindrical cavity, and the second partition plate 1852 extends radially along the cylindrical cavity.

As shown in FIG. 1 , FIG. 4 and FIG. 5 , in one example, the puncture assembly includes a puncture needle 110 , a flexible tube 120 , a pulling handle 130 and a fixing seat 140 .

Wherein, the fixing seat 140 has a flow cavity and a first opening, a second opening and a third opening which are respectively communicated with the flow cavity. The first opening is used for feeding liquid into the flow chamber. The second opening and the third opening are opposite to each other.

The pulling handle 130 is disposed on the fixing base 140 and is located at the second opening. The first end of the puncture needle 110 is connected to the pulling handle 130 through the second opening, and the second end of the puncture needle 110 is protruded from the fixing seat 140 through the third opening.

The hose 120 is sheathed on the puncture needle 110 and communicated with the third opening. The second end of the puncture needle 110 extends out of the hose 120 , and the pulling handle 130 is used to withdraw the puncture needle 110 from the hose 120 .

At present, in neonatal resuscitation, small-sized ordinary scalp needles are mainly used to puncture the umbilical vein for drug administration. During resuscitation after scalp needle puncture, the steel needle is likely to pierce the umbilical vein, resulting in the inability of the medicinal solution to enter the neonate's body, affecting the resuscitation effect. . The injection device 100 of this example is used for the umbilical vein injection operation of the newborn. The puncture needle 110 is used to pierce the cortex, and the tube 120 sheathed on the puncture needle 110 is brought into the blood vessel. After the puncture is successful, hold and pull The handle 130 directly pulls the puncture needle 110 out of the flexible tube 120, leaving the flexible tube 120 in the umbilical vein of the newborn, so that the fluid in the flow cavity can be input into the umbilical vein through the flexible tube 120, without the need for a hard needle, during resuscitation The umbilical vein will not be perforated.

Wherein, the hose 120 can be selected from a plastic hose 120 . The puncture needle 110 can be made of metal wire.

In one example, one end of the hose 120 away from the fixing seat 140 is set as a pointed end, which facilitates smooth puncturing.

In one example, the pull-out handle 130 is provided with a slot for engaging with the fixing base 140 .

As shown in FIGS. 1 and 4 , in one example, a sealing ring 180 is provided between the pull handle 130 and the fixing base 140 . Specifically, one side of the sealing ring 180 is sleeved on the fixing seat 140 , and the other side of the sealing ring 180 is in contact with the pulling handle 130 . In one example, the sealing ring 180 is a rubber ring.

As shown in FIG. 1 and FIG. 4 , in one example, the outer wall of the pull handle 130 is provided with anti-slip textures.

As shown in FIG. 1 and FIG. 4 , in one example, the fixing base 140 is provided with a fixing clip 150 , which is convenient for fixing after successful puncture, can clamp the umbilical cord of the newborn, and avoid the loosening of the hose 120 . In one example, the fixing clip 150 is an alligator clip. In the specific example shown in FIG. 1 , different from the conventional alligator clip (which uses spring elastic clamping), the fixing clip 150 is clamped by the plastic elasticity of the plastic molding itself, which is more simplified. Further, the clamping arm of the fixing clip 150 is provided with protruding dislocation teeth, which increases the clamping degree and friction force, and is not easy to fall off.

The fixing clip 150 is located between the second opening and the third opening of the fixing base 140 . The traditional small-sized ordinary scalp needle has a small needle handle, which is not conducive to the operator's grip during resuscitation, and is easy to slide, making the puncture difficult to succeed. In the injection device 100 of the present example, the fixing clip 150 is provided on the fixing base 140, which can facilitate the operator to hold the needle and is not easy to slip.

In the specific example shown in FIG. 4 , the fixing base 140 is in the shape of a strip, the fixing base 140 is disposed on one of the clamping arms of the fixing clip 150 , and the fixing base 140 and the clamping arm have an integral structure.

As shown in FIG. 1 and FIG. 4 , in one example, the injection device 100 further includes a conduit 160 , one end of the conduit 160 communicates with the first opening of the fixing seat 140 , and the other end of the conduit 160 communicates with the syringe connector 170 . After the puncture is completed, the syringe injects the liquid through the syringe connector 170 , and the liquid enters the flow cavity of the fixing seat 140 through the conduit 160 .

As shown in FIG. 1 and FIG. 4 , the fixed seat 140 is provided with a raised communication column 142 , the communication column 142 has a flow channel communicating with the flow cavity, and the conduit 160 communicates with the flow channel of the communication column 142 . The communication post 142 is provided between the second opening and the third opening.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. An injection device, characterized in that it comprises a syringe joint and a puncture assembly, the syringe joint comprises a main body and a plurality of joint pipes, the main body has an injection cavity, and a plurality of the joint pipes are respectively communicated with the injection cavity , the injection cavity is communicated with the puncture assembly; at least one of the joint pipes is provided with a backflow prevention valve, and the backflow prevention valve includes a stacked grid and a backflow prevention film. The backflow prevention film is arranged on the side of the grid close to the injection cavity, and the backflow prevention film is provided with a liquid passage slit. 2 . The injection device according to claim 1 , wherein the joint tube comprises a first tube body and a second tube body, the first tube body is disposed on the main body, and the first tube body is inside the first tube body. 3 . A limiting table is provided, and the second pipe body abuts with the limiting table to limit the grid and the anti-reflux film between the first pipe body and the second pipe body. 3 . The injection device according to claim 2 , wherein the grid and the limiting platform of the first pipe body are integrally formed. 4 . 4. The injection device of claim 1, wherein the anti-reflux film is an elastic film. 5 . The injection device according to claim 1 , wherein the liquid-passing slit is in a line shape and is located in the middle of the anti-reflux film. 6 . 6 . The injection device of claim 1 , wherein the grid has a first through hole in the middle and a plurality of second through holes surrounding the first through hole. 7 . 7 . The injection device according to claim 1 , further comprising a defoamer, the defoamer comprising a casing and a defoaming sponge, and the casing has a defoaming cavity and a defoaming cavity. The liquid inlet and the liquid outlet are communicated, the liquid inlet is communicated with the injection cavity, the liquid outlet is communicated with the puncture assembly, and the defoaming sponge is arranged in the defoaming cavity. 8 . The injection device according to claim 7 , wherein a blocking member is arranged in the defoaming cavity, and the blocking member divides the defoaming cavity into a buffer cavity and an accommodating cavity, and the One end of the buffer cavity is open and communicated with the injection cavity, the other end of the buffer cavity is closed, one end of the accommodating cavity is open and communicated with the injection cavity, and the other end of the accommodating cavity is opened to form the A liquid outlet, the defoaming sponge is arranged in the accommodating cavity. 9. The injection device according to any one of claims 1 to 8, wherein the puncture assembly comprises a puncture needle, a hose, a pulling handle and a fixing seat; the fixing seat has a flow cavity and is respectively connected with the The first opening, the second opening and the third opening communicated with the flow cavity, the first opening communicates with the injection cavity, the second opening and the third opening are oppositely arranged, and the pulling handle is arranged at The fixing seat is located at the second opening, the first end of the puncture needle passes through the second opening and is connected to the pulling handle, and the second end of the puncture needle passes through the second opening. Three openings protrude from the fixing seat, the hose is sleeved on the puncture needle and communicates with the third opening, the second end of the puncture needle protrudes from the hose, the suction A pull handle is used to withdraw the puncture needle from the hose. 10. The injection device of claim 9, wherein the hose is a plastic hose; and/or The puncture needle is a metal wire.