CN212522596U - Injection device - Google Patents

Abstract

The application discloses injection apparatus, including the connecting piece, the connecting piece is provided with hollow first appearance chamber, first appearance chamber is provided with an outflow end and two at least inflow ends, every equal sealing connection of inflow end has a auto-lock syringe, the auto-lock syringe includes the barrel, the barrel is provided with the second that is used for holding the injection material and holds the chamber, sliding connection has the activity wall in the barrel, the second hold the chamber with first appearance chamber intercommunication, the compression of activity wall the volume that the second held the chamber is so that the injection material is followed the second holds the chamber and flows in first appearance chamber and follow the outflow end flows first appearance chamber. The operation difficulty is reduced, the operation time is saved, and the operation is more convenient.

Description

Injection device

Technical Field

The utility model relates to the field of medical equipment, concretely relates to medicament impels the apparatus field, especially relates to an injection 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 injection device that is convenient to operate.

In a first aspect, the utility model discloses an injection device, including the connecting piece, the connecting piece is provided with hollow first appearance chamber, first appearance chamber is provided with an outflow end and two at least inflow ends, every the equal sealing connection of inflow end has a auto-lock syringe, the auto-lock syringe includes the barrel, the barrel is provided with the second that is used for holding the injection material and holds the chamber, sliding connection has the activity wall in the barrel, the second hold the chamber with first appearance chamber intercommunication, the activity wall compression the volume that the second held the chamber so that the injection material is followed the second holds the chamber and flows first appearance chamber is and followed the outflow end flows first appearance chamber.

According to the technical scheme that this application embodiment provided, through setting up two at least inflow ends 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 injector of an injection device according to an embodiment of the present invention;

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

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

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

fig. 5 is a schematic structural diagram of an injection 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 5, the injection device of the present invention includes a connecting member 200, the connecting member 200 is provided with a hollow first accommodating chamber, the first accommodating chamber 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 self-locking injector 100 includes a cylinder 10, the cylinder 10 is provided with a second accommodating chamber 11 for accommodating a substance to be injected, the cylinder 10 is slidably connected to a movable wall 12, the second accommodating chamber 11 is communicated with the first accommodating chamber, the movable wall 12 compresses the volume of the second accommodating chamber 11 so that the substance to be injected flows into the first accommodating chamber from the second accommodating chamber 11 and flows out of the first accommodating chamber from the outflow end 220.

In the embodiment of the present invention, the connector is used for connecting a plurality of 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 syringe extracting the adhesive, and the other inflow end is connected to the syringe extracting the sugar water. When the adhesive needs to be introduced into the catheter, the push rod of the syringe extracting the adhesive is pressed, so that the adhesive enters the vein through the catheter. When sugar water needs to be introduced into the catheter, the push rod of the injector with the sugar water is pressed, so that the catheter is flushed by the sugar water, and 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 auto-lock syringe, that is at the injection in-process, the activity wall of syringe only can be along compressing the second and holding the direction motion of chamber volume, can prevent to promote the activity wall motion in certain syringe, because the atmospheric pressure increase in the first appearance intracavity, it is ejecting with the activity wall of other syringes, make the operator when using injection device to inject, operator's hand only need press a auto-lock syringe can, need not press the direction motion that a plurality of syringes prevented the activity wall, the operation degree of difficulty has been reduced.

Further, the inflow end 230 is provided with a first pair of interfaces 240, and the auto-lock injector 100 is provided with a second pair of interfaces 17, wherein the second pair of interfaces 17 extends into the first pair of interfaces 240 and is in butt joint with the first pair of interfaces 240.

The utility model discloses an in the embodiment, connect inflow end and auto-lock syringe through first butt joint mouth and the butt joint of second butt joint mouth, wherein, the second butt joint mouth is the needle mouth of auto-lock syringe, when the butt joint of second butt joint mouth and first butt joint mouth, the inner chamber of first butt joint mouth is stretched into to the second butt joint mouth, the inner wall of first butt joint mouth can be provided with certain tapering, the length that first butt joint mouth was stretched into to the second butt joint mouth is longer, interval between second butt joint mouth and the first butt joint mouth is less, block the outer wall of second butt joint mouth until the inner wall of first butt joint mouth, fix auto-lock syringe and inflow end through the frictional force between first butt joint mouth and the second butt joint mouth, and be sealing connection between auto-lock syringe and the inflow end, can avoid waiting to inject the material and flow out between the gap between the two, moreover, the steam generator is. Of course, other detachable fixing connection structures may be provided to connect the auto-lock syringe and the inflow end, wherein the detachable fixing connection structure may be, but not limited to, a rotary connection structure, a snap connection structure, an electromagnetic connection structure, etc.

Further, the inflow end 230 is provided with a first rotational lock and the auto-lock syringe 100 is provided with a second rotational lock 18, the first rotational lock being rotationally locked with the second rotational lock 18.

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

Further, the outflow end 220 is provided with a third rotation lock.

The utility model discloses an in the embodiment, the outflow is provided with the rotatory lock of third, connects outflow and pipe through the rotatory lock of third, and the rotatory lock of third can be but not limited to for the luer lock, connects reliably, and convenient operation has good commonality. Of course, the connection of the outflow end and the catheter is also a sealing connection, so that the substance to be injected is prevented from flowing out of the gap between the catheter and the outflow end. The self-locking injector is connected with the inflow end, the outflow end is connected with the catheter, the substance to be injected in the self-locking injector is pushed into the first containing cavity from the second containing cavity by pushing the movable wall of the self-locking injector, and the substance to be injected finally enters the varicose vein part in the containing cavity of the inflow catheter to adhere to the blood vessel, so that the effect of treating varicose vein is achieved.

Further, the first cavity is provided with two inflow ends 230.

In the embodiment of the utility model, when the varicosity is treated, the adhesive and the sugar water are injected according to the requirement, wherein one inflow end is connected with the injector extracted with the adhesive, and the other inflow end is connected with the injector extracted with the sugar water. When the adhesive needs to be introduced into the catheter, the push rod of the syringe extracting the adhesive is pressed, so that the adhesive enters the vein through the catheter. When sugar water needs to be introduced into the catheter, the push rod of the injector with the sugar water is pressed, so that the catheter is flushed by the sugar water, and the adhesive is prevented from blocking the catheter. The adhesive may be, but is not limited to, a bio-gel or a tissue gel, and the sugar water may be, but is not limited to, 5% dextrose water. The number of the inflow ends and the substance to be injected extracted by the self-locking injector can be set according to actual needs.

Furthermore, the included angle between two adjacent inflow ends 230 is 30-60 degrees. Can be convenient for the operator to carry out manual operation, of course, the motion path of the push rod of two adjacent auto-lock syringes can not be mutual interference, guarantees the smoothness nature of operation to improve the operating speed, reduce the risk of stifled pipe.

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 chamber from the second chamber only, and cannot flow into the second chamber from the first chamber. 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 includes a barrel 10, the barrel 10 is provided with a second cavity 11 for accommodating a substance to be injected, two ends of the second cavity 11 are a first open end 111 and a second open end 112, the second cavity 11 is internally sealed and slidably connected with a movable wall 12, 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 second cavity 11, and the push rod 13 is connected with the barrel 10 through a ratchet mechanism 20, so that the movable wall 12 moves in the second cavity 11 in a one-way direction along the direction 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 second 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 to the second cavity in a sealing manner, it can be understood that the movable wall does not seal the whole cavity, but the movable wall is connected to the cylinder in a sealing manner, that is, the substance to be injected in the second cavity does not flow out of the second cavity from a gap between the movable wall and the cylinder, and unnecessary loss of the substance to be injected in the self-locking syringe 100 can be avoided. Of course, it can also be ensured that the substance to be injected in the second chamber is forced out of the second 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 second 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, and the push rod extends out of the second opening end and is manually pushed by a doctor, or the push rod can be pushed by an external device in an auxiliary mode. 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 includes ratchet teeth 21 and a pawl 22, the push rod 13 is provided with a plurality of ratchet teeth 21 at intervals, the barrel 10 is fixedly connected with the pawl 22 through an elastic element 23, one side of the ratchet teeth 21 facing away from the movable wall 12 is a stopping surface 211, and the pawl 22 is matched with the stopping surface 211, so that the movable wall 12 moves in one direction from the second opening end 112 to the first opening end 111 in the second cavity 11.

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 second cavity. 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, namely, 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 continuously suck other substances to be injected into the second containing cavity, thereby realizing the repeated use 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 second 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 second containing 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 second 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 entering second and hold the intracavity, is difficult to follow the second and holds the intracavity and take 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 (a second pair of interfaces) 17 and a second rotating lock 18 respectively, an inner cavity of the needle nozzle (the second pair of interfaces) 17 is communicated with the second containing cavity 11, and the needle nozzle (the second pair of interfaces) 17 is located in an inner cavity of the second rotating 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 second 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 injection device, its characterized in that, includes the connecting piece, the connecting piece is provided with hollow first appearance chamber, first appearance chamber is provided with an outflow end and two at least inflow ends, every equal sealing connection of inflow end has a auto-lock syringe, the auto-lock syringe includes the barrel, the barrel is provided with the second that is used for holding the material of treating the injection and holds the chamber, sliding connection has the activity wall in the barrel, the second hold the chamber with first appearance chamber intercommunication, the activity wall compression the volume that the second held the chamber so that the material of treating the injection is followed the second holds the chamber and flows in first appearance chamber and follow the outflow end flows first appearance chamber.

2. The injection device of claim 1, wherein the inflow end is provided with a first pair of ports, and the auto-lock injector is provided with a second pair of ports that extend into and interface with the first pair of ports.

3. The injection device of claim 1, wherein the inflow end is provided with a first rotational lock and the auto-lock syringe is provided with a second rotational lock, the first rotational lock being rotationally locked with the second rotational lock.

4. An injection device according to claim 1, wherein the outflow end is provided with a third rotational lock.

5. The injection device as defined in claim 1, wherein the first cavity is provided with two of the inflow ends.

6. The injection device as claimed in claim 1, wherein the included angle between two adjacent inflow ends is 30-60 degrees.

7. An injection device according to claim 1, wherein the connector is provided with a valve body for communicating the outflow end with only one of the inflow ends.

8. The injection device of claim 1, wherein the outflow end has a diameter smaller than a diameter of the inflow end.

9. The injection device as claimed in 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, a pawl is fixedly connected to the barrel through an elastic element, the ratchet teeth and the pawl form a ratchet mechanism, and the push rod is connected to the barrel through the ratchet mechanism, so that the movable wall moves in one direction in the second cavity.

10. The injection device as defined in claim 9, wherein an opening is provided in a side wall of the barrel remote from the inflow end, and the pawl is provided with a pressing portion extending from the opening out of the second cavity.

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