CN212522597U - Intravenous injection device - Google Patents

Abstract

The application discloses intravenous injection device, including consecutive auto-lock syringe, connecting piece and pipe, the auto-lock syringe is provided with the first appearance chamber that is used for holding the injection material, the connecting piece is provided with the second and holds the chamber, the pipe is provided with the third and holds the chamber, first appearance chamber the second holds the chamber and the third holds the chamber intercommunication, the second holds the chamber and is provided with an outflow end and two at least inflow ends, every equal sealing connection of inflow end has one the auto-lock syringe, the outflow end with pipe sealing connection, the auto-lock syringe includes the barrel, sliding connection has the activity wall in the barrel, the activity wall compresses the volume in first appearance chamber so that the injection material is followed first appearance chamber flows through the second holds the chamber and flows in the third holds the chamber. The operation difficulty is reduced, and the operation time is saved.

Description

Intravenous injection device

Technical Field

The utility model relates to the field of medical equipment generally, concretely relates to medicament impels the apparatus field, especially relates to an intravenous route device.

Background

Varicose veins in the lower extremities are one of the most common surgical diseases, and the incidence rate can reach 30% in western countries. The incidence of varicose veins of the lower limbs increases with age, which seriously affects the life quality of people and increases the economic burden of society. Non-operative treatment is less effective and is prone to relapse. The traditional operation is high ligation and stripping, which is widely used for thorough treatment, but has the disadvantages of large operation injury, more scars, beautiful appearance and high recurrence rate. The treatment of the foam sclerosing agent is incomplete, and particularly has poor curative effect on thick varicose veins, high recurrence rate and frequent secondary thrombophlebitis. The heat treatment technologies such as intracavity laser treatment, radio frequency treatment and the like require special equipment, need anesthesia, often cause heat damage to skin and saphenous nerves, and cannot treat thin varicose veins or buckled and agglomerated varicose veins.

The medical field always seeks an economical, practical, simple and effective method which can be treated by an outpatient clinic and has a beautifying effect. The biological glue or tissue glue is applied to the adhesion treatment of varicose veins of lower limbs, and the effect of closing varicose veins can be achieved. The adhesive is bonded without anesthesia and heat loss, and can achieve the same curative effect as intracavity laser treatment and radio frequency treatment.

In the process of using the injector to inject the adhesive to the treatment part through the catheter to treat the varicosity, the operation may need to be suspended, at the moment, the injector absorbing the sugar water needs to be replaced, and the sugar water is introduced into the catheter to wash the catheter, so that the adhesive is prevented from blocking the catheter. The operator needs to separate the syringe containing the adhesive from the catheter, then connect the syringe containing the sugar water with the catheter, and then push the sugar water into the catheter to wash the catheter, so that the operation is inconvenient, the operator needs to act quickly, and otherwise the adhesive in the catheter contacts blood to block the catheter.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide an intravenous injection device that is convenient to operate.

In a first aspect, the utility model discloses an intravenous injection device, including consecutive auto-lock syringe, connecting piece and pipe, the auto-lock syringe is provided with the first appearance chamber that is used for holding the material of waiting to inject, the connecting piece is provided with the second and holds the chamber, the pipe is provided with the third and holds the chamber, first appearance chamber the second holds the chamber and the third holds the chamber intercommunication, the second holds the chamber and is provided with an outflow end and two at least inflow ends, every the equal sealing connection of inflow end has one the auto-lock syringe, the outflow end with pipe sealing connection, the auto-lock syringe includes the barrel, sliding connection has the activity wall in the barrel, the activity wall compresses the volume in first appearance chamber so that wait to inject the material and follow first appearance chamber flows through the second holds the chamber and flows in the third holds the chamber.

According to the technical scheme that this application embodiment provided, set up two at least inflow ends through the connecting piece to every inflow end all is connected with the auto-lock syringe, inhales adhesive and syrup respectively in the syringe of difference, when using the syrup to wash away the pipe, need not separate syringe and pipe, has reduced the operation degree of difficulty, has practiced thrift operating time, and it is more convenient to operate, can solve the inconvenient problem of operation of prior art.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural view of a self-locking syringe of an intravenous injection device according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a self-locking syringe of an intravenous injection device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a self-locking syringe of an intravenous injection device according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an iv set according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an iv set according to an embodiment of the present invention;

fig. 6 is a schematic view of a catheter cross section of an intravenous device according to an embodiment of the present invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 6, the intravenous injection device of the present invention includes a self-locking injector 100, a connecting member 200 and a conduit 300 connected in sequence, the self-locking injector 100 is provided with a first accommodating cavity 11 for accommodating a substance to be injected, the connecting member 200 is provided with a second accommodating cavity, the conduit 300 is provided with a third accommodating cavity, the first accommodating cavity 11, the second accommodating cavity and the third accommodating cavity are communicated, the second accommodating cavity is provided with an outflow end 220 and at least two inflow ends 230, each inflow end 230 is hermetically connected to a self-locking injector 100, the outflow end 220 is hermetically connected to the conduit 300, the self-locking injector 100 includes a cylinder 10, a movable wall 12 is slidably connected to the cylinder 10, and the movable wall 12 compresses the volume of the first accommodating cavity 11 so that the substance to be injected flows through the second accommodating cavity from the first accommodating cavity 11 and flows into the third.

In the embodiment of the present invention, the connecting member is used for connecting a plurality of self-locking syringes and catheters, and during the varicose vein treatment, it is usually necessary to inject an adhesive and sugar water, i.e. two inflow ends are required, wherein one inflow end is connected to the self-locking syringe extracted with the adhesive, and the other inflow end is connected to the self-locking syringe extracted with the sugar water. When the adhesive needs to be introduced into the catheter, the push rod of the self-locking syringe with the adhesive is pressed to enable the adhesive to enter the vein through the catheter. When sugar water needs to be introduced into the catheter, the push rod of the self-locking injector with the sugar water is pressed to flush the catheter with the sugar water, so that the adhesive is prevented from blocking the catheter. The syringe does not need to be replaced in the operation process, the operation is convenient, the operation speed is high, and the risk of tube blockage is reduced. With inflow end sealing connection be the auto-lock syringe, that is at the injection in-process, the activity wall of auto-lock syringe only can be along the direction motion of compressing first chamber 11 volume, can prevent to promote the activity wall motion in-process of certain auto-lock syringe, because the atmospheric pressure increase in the first chamber 11, it is ejecting with the activity wall of other auto-lock syringes, make the operator when using intravenous injection device to inject, operator's hand only need press one auto-lock syringe can, need not press the direction motion that a plurality of auto-lock syringes prevented the activity wall, the operation degree of difficulty has been reduced.

Further, the outer wall and/or the inner lumen of the catheter 300 is provided with a hydrophilic coating. The outer wall of the catheter is provided with a hydrophilic coating, which is beneficial to the entrance and exit of the catheter into the venous cavity. The inner cavity of the catheter is provided with a hydrophilic coating, which is beneficial to the insertion of guide wires and optical fibers which move in the inner cavity of the catheter.

Further, the third cavity includes a first sub-cavity 311 and a second sub-cavity 312 which are independent from each other, both the first sub-cavity 311 and the second sub-cavity 312 penetrate through the conduit 300 along the length direction of the conduit 300, and the second sub-cavity 312 is communicated with the second cavity.

In an embodiment of the present invention, the catheter is provided with two independent first sub-cavities and second sub-cavities, wherein the second sub-cavity is communicated with the second cavity and with the first cavity 11, and the substance to be injected by the self-locking injector flows from the first cavity 11 through the second cavity and the second sub-cavity into the vein. The first sub-cavity is used for passing through a guide wire and an optical fiber, but not limited to, the cross section of the second sub-cavity is of a stub shape, the cross section of the first sub-cavity is circular, and the second sub-cavity can semi-surround the first sub-cavity to increase the area of the cross section of the second sub-cavity and facilitate the passing of a solution to be injected.

Further, the inner diameter of the first sub-cavity 311 is 0.5 to 1.1mm, and the inner diameter of the second sub-cavity 312 is 0.2 to 0.7 mm.

Further, the length of the conduit 300 is 60-150 cm.

Further, the catheter 300 is extended to form a first connection port, the first connection port is provided with a first rotation lock, the outflow end 220 is provided with a second rotation lock, and the first rotation lock and the second rotation lock are locked in rotation.

The utility model discloses an in the embodiment, through first rotatory lock and the rotatory locking of second come connecting conduit and outflow end, first rotatory lock and the rotatory lock of second can all set up to the luer lock, connect reliably convenient operation.

Further, the auto-lock injector 100 is provided with a second connection port 17, the second connection port 17 is provided with a third rotation lock 18, the inflow end 230 is provided with a fourth rotation lock, and the third rotation lock 18 and the fourth rotation lock are locked in rotation.

In the embodiment of the utility model, connect auto-lock syringe and inflow end through the rotatory locking of third rotatory lock and fourth rotatory lock, third rotatory lock and fourth rotatory lock can all set up to the luer lock, connect reliably convenient operation.

Further, the catheter 300 is a 6F catheter.

Further, the connector 200 is provided with a valve body for communicating the outflow end 220 with only an inflow end 230.

In the embodiment of the present invention, the valve body may be a check valve, and the check valve can limit the substance to be injected to flow into the first accommodating chamber 11 only from the first accommodating chamber 11, and cannot flow into the first accommodating chamber 11 from the first accommodating chamber 11. The valve body can also be a rotary valve, and the rotary valve rotates to different positions, so that different inflow ends are communicated with the inflow end, the situation that substances to be injected reversely push into the self-locking injector is avoided, and the reliability of the injection device is improved. The valve body is such that the outflow end communicates with only one inflow end for a certain period of time.

Further, the diameter of the outflow end 220 is smaller than the diameter of the inflow end 230.

In the embodiment of the utility model, the catheter needs to stretch into the vein, the diameter of the tube body of the catheter is smaller than the diameter of the needle nozzle of the self-locking injector, and the connection of the tube bodies with two different diameters is realized through the connecting piece.

Further, the auto-lock injector 100 comprises a barrel 10, the barrel 10 is provided with a first cavity 11 for containing a substance to be injected, two ends of the first cavity 11 are respectively a first open end 111 and a second open end 112, a movable wall 12 is hermetically and slidably connected in the first cavity 11, the movable wall 12 moves between the first open end 111 and the second open end 112, the movable wall 12 is fixedly connected with a push rod 13, the push rod 13 extends from the second open end 112 to the outside of the first cavity 11,

the connection between the push rod 13 and the cylinder 10 is via the ratchet mechanism 20, so that the movable wall 12 moves in one direction in the first cavity 11 from the second open end 112 to the first open end 111.

In the embodiment of the present invention, the cylinder is provided with a first cavity for containing the substance to be injected, wherein the substance to be injected is a solution or a medicament used for treating varicose vein, the substance to be injected can be an adhesive, the adhesive can be but not limited to bio-gel or tissue gel, and the substance to be injected can also be sugar water used for washing the adhesive in the catheter. The substance to be injected is injected into the catheter through the self-locking injector 100 and then led out to a predetermined area through the catheter, the predetermined area is usually the affected part of varicose veins, and part of blood vessels of the varicose veins are adhered through adhesive to achieve the aim of sealing the blood vessels to finish treatment.

The movable wall is connected with the first accommodating cavity in a sealing mode, and the movable wall is not used for sealing the whole accommodating cavity but is connected with the cylinder in a sealing mode, so that substances to be injected in the first accommodating cavity cannot flow out of the first accommodating cavity from a gap between the movable wall and the cylinder, and unnecessary loss of the substances to be injected in the self-locking injector 100 can be avoided. Of course, it can also be ensured that the substance to be injected in the first chamber is forced out of the first chamber from the first open end by the movement of the movable wall. The movable wall may be, but is not limited to, a rubber piston.

The two ends of the first cavity are respectively a first opening end and a second opening end, the first opening end is used for sucking and spitting out a substance to be injected, the push rod extends out of the second opening end and is manually pushed by a doctor, and certainly, the push rod can also be pushed in an auxiliary manner by means of an external device. The push rod is connected with the barrel through the ratchet mechanism, when the self-locking injector 100 is used for injecting a substance to be injected, the push rod can move in one direction from the second opening end to the first opening end in the barrel through the limitation of the ratchet mechanism, namely, in the injection process, a doctor does not need to push the push rod all the time to prevent the movable wall from moving in the opposite direction, and the use convenience of the self-locking injector 100 is improved.

Fig. 1 is a schematic view of the movable wall of the self-locking syringe 100 at the side of the second opening end, fig. 2 is a schematic view of the pawl and ratchet locking of the self-locking syringe 100, and fig. 3 is a schematic view of the pressing part being pressed to separate the pawl from the ratchet movement path and the push rod being withdrawn.

Further, the ratchet mechanism 20 comprises a ratchet 21 and a pawl 22, the push rod 13 is provided with a plurality of ratchets 21 at intervals, the barrel 10 is fixedly connected with the pawl 22 through an elastic element 23, one side of the ratchet 21, which faces away from the movable wall 12, is a stop surface 211,

the pawl 22 cooperates with the stop surface 211 to move the movable wall 12 in a single direction within the first receptacle 11 in a direction from the second open end 112 to the first open end 111.

The utility model discloses an in the embodiment, the push rod interval is provided with a plurality of ratchets, and the interval between the specific quantity of ratchet and the adjacent ratchet can be designed according to the demand of difference, and of course, the more or the less interval between the adjacent ratchet of ratchet quantity in the unit length, when using the push rod to promote the activity wall motion, control single that can be more accurate promotes the volume of waiting to inject the material. The pawl is connected with the barrel through the elastic element, the pawl is matched with a single ratchet for details, in the process of pushing the push rod to move, the pawl can be in contact with one side, facing the first opening end, of the ratchet, along with the movement of the push rod, the pawl is pushed by the ratchet to move towards the direction far away from the push rod, at the moment, the elastic element can deform and store energy, the pawl is enabled to be tightly attached to the surface of the ratchet until the pawl moves to the side, facing away from the first opening end, of the ratchet, namely, the side of the stop surface, at the moment, the elastic element can release internal elastic force, the pawl moves to the side, facing away from the first opening end, of the ratchet under the driving of the elastic element, at the moment, the stop surface can stop the pawl, the push rod is prevented from moving backwards, and therefore the one-way movement of the movable wall in the first accommodating. Of course, after completing a single injection, the pawl can be manually shifted, and the elastic element deforms at the moment, so that the pawl is separated from the ratchet, that is, the pawl is not located on the movement path of the ratchet, and the push rod can be pulled at the moment, so that the movable wall moves along the direction from the first opening end to the second opening end, and in the movement process of the movable wall, the self-locking injector 100 can continue to suck other substances to be injected into the first containing cavity, thereby realizing the reuse of the self-locking injector 100.

Further, the elastic element 23 is a spring.

In the embodiment of the present invention, for other elastic elements such as springs, the elastic sheet has a simple structure, occupies a small area, and is more favorable for popularizing the auto-lock syringe 100.

Furthermore, the side of the ratchet 21 facing the movable wall 12 is a sliding surface 212, and the distance between the side of the sliding surface 212 close to the movable wall 12 and the push rod 13 is smaller than the distance between the side of the sliding surface 212 far from the movable wall 12 and the push rod 13.

The utility model discloses an in the embodiment, the glide plane can be but not limited to for plane, curved surface or dysmorphism face, and in the promotion push rod motion process, the glide plane makes the pawl can steady motion to the backstop face, comes backstop pawl through the backstop face, realizes the one-way motion of activity wall. When the elastic element is not deformed, the distance between the pawl and the push rod is smaller than the distance between the side of the stop surface far away from the push rod and the push rod.

Further, the ratchet 21 is provided as a circular truncated cone, and the ratchet 21 is coaxial with the push rod 13.

The embodiment of the utility model provides an in, the push rod can rotate for the barrel, sets up the ratchet into the round platform to the ratchet is coaxial with the push rod, can guarantee to use when auto-lock syringe 100 injects and treat the injection material no matter what position the push rod rotates, and the pawl can both cooperate with the ratchet, realizes the one-way motion of activity wall.

Further, an opening 15 is formed in one side of the side wall of the cylinder 10 close to the second opening end 112, the pawl 22 is provided with a pressing portion 221, and the pressing portion 221 extends out of the first accommodating cavity 11 from the opening 15.

In the embodiment of the present invention, when the auto-lock syringe 100 is used to suck the substance to be injected or to move the movable wall in the direction from the first opening end to the second opening end, the pressing portion is pressed to separate the pawl from the movement path of the ratchet, and at this time, the elastic element deforms, and the push rod is pulled back, and the pawl does not contact with the stop surface. When the push rod is pulled back to a preset position, the pressing part is loosened, and the pawl is driven by the elastic element to recover the state matched with the ratchet. The pressing part extends out of the first accommodating cavity from the opening, so that the pressing part can be pressed conveniently, the operation difficulty is reduced, and the operation speed is increased.

Furthermore, a bending portion 222 is disposed on a side of the pressing portion 221 away from the push rod 13, and the pressing portion 221 is bent to a side back to the second opening end 112 to form the bending portion 222.

The utility model discloses an in the embodiment, when pressing the splenium, can press the kink with the hand and be the motion route that the pawl breaks away from the ratchet, because elastic element can produce deformation, press the contained angle between splenium and the push rod and can produce the change, through setting up the kink, can avoid pressing the splenium to take off the hand pressing the in-process, reduced the degree of difficulty of pressing, improved the reliability of pressing.

Further, one end of the push rod 13 away from the first open end 111 is fixedly connected with a push handle 14, and the diameter of the push handle 14 is larger than that of the first accommodating cavity 11.

The utility model discloses an in the embodiment, the diameter that pushes away the handle is greater than the diameter that holds the chamber, and the diameter that must push away the handle is greater than the diameter of push rod, and convenient to use person promotes the push rod motion through pressing away the handle, has reduced the finger and has pushed away the pressure between the handle, simultaneously, also can prevent to push away the handle and is promoted the first intracavity that holds that gets into, is difficult to follow first appearance intracavity and takes out and push away the handle.

Further, a clamping handle 16 is fixedly connected to the cylinder 10.

The embodiment of the utility model provides an in, when using auto-lock syringe 100 injection to treat the injection material, through the common centre gripping clamping handle of forefinger and middle finger, the thumb is pressed and is pushed away the handle and promote the activity wall along the direction motion from second open end to first open end, and is rational in infrastructure, has reduced auto-lock syringe 100's the operation degree of difficulty. The clamping handle may be, but is not limited to being, disposed at one side of the second open end of the barrel to facilitate clamping of the clamping handle.

Further, the first opening end 111 is fixedly connected with a needle nozzle (second connection port) 17 and a third rotary lock 18 respectively, an inner cavity of the needle nozzle (second connection port) 17 is communicated with the first accommodating cavity 11, and the needle nozzle (second connection port) 17 is located in an inner cavity of the third rotary lock 18.

In the embodiment of the present invention, the auto-lock injector 100 is connected to the catheter through the connector 200, and can be directly connected to the catheter through the needle nozzle, and the needle nozzle and the catheter are fixed by the friction force between the needle nozzle and the catheter, and the needle nozzle and the catheter can also be fixed by the third rotary lock, which can be but not limited to a luer lock.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (10)

1. The utility model provides an intravenous injection device, its characterized in that, is including consecutive auto-lock syringe, connecting piece and pipe, the auto-lock syringe is provided with the first appearance chamber that is used for holding the material of treating the injection, the connecting piece is provided with the second and holds the chamber, the pipe is provided with the third and holds the chamber, first appearance chamber the second holds the chamber and the third holds the chamber intercommunication, the second holds the chamber and is provided with an outflow end and two at least inflow ends, every the equal sealing connection of inflow end has one the auto-lock syringe, the outflow end with pipe sealing connection, the auto-lock syringe includes the barrel, sliding connection has the activity wall in the barrel, the activity wall compresses the volume in first appearance chamber so that the material of treating the injection follow first appearance flows through the second holds the chamber and flows in the third holds the chamber.

2. The intravenous injection apparatus of claim 1, wherein an outer wall and/or a lumen of the catheter is provided with a hydrophilic coating.

3. The iv set of claim 1 wherein the third cavity comprises a first sub-cavity and a second sub-cavity that are independent of each other, wherein the first sub-cavity and the second sub-cavity both extend through the conduit along the length of the conduit, and wherein the second sub-cavity is in communication with the second cavity.

4. The intravenous injection apparatus of claim 3, wherein the first sub-volume has an inner diameter of 0.5 to 1.1mm and the second sub-volume has an inner diameter of 0.2 to 0.7 mm.

5. The iv set of claim 1 wherein the catheter has a length of 60-150 cm.

6. The iv set of claim 1 wherein the catheter extends to form a first port, the first port being provided with a first rotational lock, the outflow end being provided with a second rotational lock, the first rotational lock being rotationally locked with the second rotational lock.

7. The intravenous injection apparatus of claim 1, wherein the self-locking syringe is provided with a second port provided with a third rotational lock, the inflow end is provided with a fourth rotational lock, and the third rotational lock is rotationally locked with the fourth rotational lock.

8. The intravenous injection apparatus of claim 1, wherein the catheter is a 6F catheter.

9. The intravenous injection apparatus according to claim 1, wherein a push rod is fixedly connected to the movable wall, the push rod is provided with a plurality of ratchet teeth at intervals, the barrel is fixedly connected with a pawl through an elastic element, the ratchet teeth and the pawl form a ratchet mechanism, and the push rod is connected with the barrel through the ratchet mechanism, so that the movable wall moves in one direction in the first accommodating cavity.

10. The iv set of claim 9 wherein the side wall of the barrel distal from the inflow end is provided with an opening, and the pawl is provided with a pressing portion extending from the opening out of the first cavity.

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