CN219847671U

CN219847671U - Injection device

Info

Publication number: CN219847671U
Application number: CN202223193001.1U
Authority: CN
Inventors: 张春谊; 杨耀武; 孙沫逸; 廖习坪; 杨扬; 李佳时
Original assignee: Air Force Medical University of PLA
Current assignee: Air Force Medical University of PLA
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-10-20
Anticipated expiration: 2032-11-30

Abstract

The utility model provides an injection device, which comprises a first injector and a second injector, and is characterized in that: the joint of the first syringe and the joint of the second syringe are respectively sealed and glued with a perfusion tube, a first three-way valve is arranged on the perfusion tube connected with the first syringe in a sealing way, a second three-way valve is arranged on the perfusion tube connected with the second syringe in a sealing way, a clamping knob is sleeved on the outer wall of the protruding joint, the clamping knob is in threaded connection with the protruding joint in a matched way, the injection device can be adapted to two ways of vascular malformation treatment through the matched use of the first three-way valve and the second three-way valve, in addition, the problem that the syringe and the three-way valve which are fixedly connected are disconnected easily by doctors during use is solved, and the problems of pollution and waste of medicaments generated in the use are solved, and the problem that the transfusion speed of two hands is inconsistent when the doctors infuse simultaneously by left and right hands is solved by a fixed block and a limiting block arranged at the tail end of the piston of the syringe.

Description

Injection device

Technical Field

The utility model relates to the field of syringes, in particular to an injection device.

Background

At present, the foam hardener is widely applied to treating vascular malformations, a doctor usually connects two syringes with two interfaces of a three-way valve, and hands are staggered to push the piston handles of the syringes, so that air in the syringes and the medicament are fully mixed uniformly and are beaten into foam, and then the foam is injected into a lesion part of a patient;

however, vascular malformations generally have two treatment modes, one mode is to mix and foam in advance, then inject the foamed foam hardener after foaming into the lesion site of a patient, the other mode is to push a syringe containing two medicaments with both hands, and inject the two medicaments into the lesion site of the patient at the same time, usually pingyangmycin and fibrin glue are injected in a ratio of 1:1, but because the two medicaments form gel after being mixed, the two medicaments can only be mixed just before being injected into the lesion site of the patient, and the mixing time points of the two modes are different;

accordingly, conventional foam hardener formulation injection devices typically suffer from the following disadvantages:

1. the conventional device can only meet one treatment mode, two injection devices are adopted in two modes, the cost is high, and the operation is complicated;

2. when the interface of the injector is directly connected with the interface of the three-way valve, the connection part is easy to loosen, and medical staff easily fall off from the interface of the three-way valve when mixing and foaming, so that foam hardening agent in the injector flows out, and unnecessary waste and pollution are caused;

3. when two medicaments are injected to the lesion part of a patient simultaneously, the propulsion speeds of the left hand and the right hand of a doctor cannot be completely the same, and the accurate 1:1 injection cannot be made.

Disclosure of Invention

In view of the above, the present utility model provides an injection device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an injection device, includes first syringe and second syringe, the junction of first syringe with the junction of second syringe seals the glue joint respectively has a transfer line, the transfer line that first syringe connects is last to be sealed to be equipped with first three-way valve, the second syringe is connected the transfer line is last to be sealed to be equipped with the second three-way valve, the external diameter of the protruding joint of first three-way valve with the internal diameter of the second protruding joint of second three-way valve suits, the chucking knob has been cup jointed on the outer wall of protruding joint, the internal thread has been lined up on the inner wall of chucking knob, the external wall line of protruding joint has with internal thread matched with external screw thread, chucking knob with protruding joint matched with threaded connection, protruding joint's external diameter is followed protruding joint is to the valve body direction increase gradually, protruding joint's minimum external diameter with the internal diameter of second protruding joint suits.

Preferably, the clamping knob is divided into a sleeve and a fixed pipe, the sleeve is fixedly attached to the fixed pipe, a concave chute is formed in the inner wall of the fixed pipe, a limiting ring which is matched with the chute in size is protruded on the surface of the protruded joint, the limiting ring is arranged in the chute, the inner diameter of the sleeve is matched with the outer diameter of the second protruded joint, and the inner diameter of the fixed pipe is matched with the outer diameter of the protruded joint.

Preferably, the first three-way valve and the second three-way valve are T-shaped three-way valves capable of controlling the opening and closing of the flow of 3 interfaces.

Preferably, the tail end of the piston handle of the first injector is provided with a fixed block, the protruding direction of the fixed block is perpendicular to the moving direction of the piston handle, a limiting groove with the extending direction consistent with the protruding direction of the fixed block is arranged in the fixed block, the tail end of the piston handle of the second injector is provided with a limiting block, the cross section of the limiting groove is isosceles trapezoid, and the limiting block is an isosceles trapezoid column with the same size as the cross section of the limiting groove.

Preferably, the injection device further comprises a mixing cavity, the left ends of the two infusion tubes are all in through connection with the mixing cavity, the inner diameter of the mixing cavity is larger than twice the inner diameter of the infusion tube, and the front end of the mixing cavity is connected with the injection needle.

Preferably, a filter screen is arranged at the joint of the mixing cavity and the two infusion tubes, and the filter screen is of a fine porous structure.

Preferably, a porous structure is arranged on the inner wall of the protruding joint, and the porous structure is distributed throughout the protruding joint.

Preferably, the infusion tube and the mixing cavity are coated with anti-adhesive layers.

Preferably, the first injector and the second injector are connected by an elastic clamping plate, the elastic clamping plate wraps the needle head part of the first injector and the needle head part of the second injector, and the left side and the right side of the elastic clamping plate clamp the needle cylinder part of the first injector and the needle cylinder part of the second injector.

Compared with the prior art, the utility model has the beneficial effects that:

1. the infusion tube of the two syringes is provided with three-way valves, the injection device can be suitable for the two treatment modes, when the two three-way valves are mutually communicated, the three-way valves are adjusted to enable the passages of the syringes and the infusion tube to be closed, and the first syringe and the second syringe form a passage through the three-way valves, so that the infusion tube can be used for mixing medicament and air in advance and foaming the medicament and the air, and then injecting the medicament and the air into a lesion part of a patient; when the three-way valves are not connected together, valve cores of the two three-way valves are adjusted to enable the syringes and the infusion tube to form a passage, and the first syringe and the second syringe can be used for simultaneously injecting fibrin glue and pingyangmycin into a lesion part of a patient;

2. the first three-way valve and the second three-way valve are fixedly and hermetically integrated at the joint of the infusion tube and the first and second syringes to form a sealed and fixedly connected joint of the infusion tube and the three-way valve and the protruding joint of the syringe, so that the protruding joint of the syringe is prevented from falling off from the three-way valve;

3. the tail end of the piston handle of the first injector is provided with the fixed block, the tail end of the piston handle of the second injector is provided with the limiting block, the limiting block is matched with the limiting groove in the fixed block in shape and size, the limiting block is convenient to enter the limiting groove, after entering the limiting groove, the limiting block is pushed to push the fixed block, the two piston handles of the first injector and the second injector move at the same speed at the same time, the injection speed of the first injector and the injection speed of the second injector are guaranteed to be equal, and then the medicine amount entering a lesion part of a patient is guaranteed to be 1:1.

drawings

FIG. 1 is a schematic view of an injection device of the present utility model;

FIG. 2 is a schematic view of a first syringe tail of an injection device according to the present utility model;

FIG. 3 is a schematic view of the tail end of a second syringe of an injection device according to the present utility model;

fig. 4 is a schematic view of a clamping knob of an injection device according to the present utility model.

Detailed Description

For a further understanding of the objects, construction, features, and functions of the utility model, reference should be made to the following detailed description of the preferred embodiments.

Referring to fig. 1, 2 and 3, an injection device according to an embodiment of the utility model includes a first syringe 1 and a second syringe 2, a fluid pipe 3 is sealed and glued at the joint of the first syringe 1 and the joint of the second syringe 2, a first three-way valve 5 is sealed and arranged on the fluid pipe 3 connected with the first syringe 1, a second three-way valve 6 is sealed and arranged on the fluid pipe 3 connected with the second syringe 2, an outer diameter of a protruding joint 71 of the first three-way valve 5 is adapted to an inner diameter of a second protruding joint 72 of the second three-way valve 6, a clamping knob 73 is sleeved on an outer wall of the protruding joint 71, an inner thread is provided on an inner wall of the clamping knob 73, an outer wall of the protruding joint 71 is provided with an outer thread matched with the inner thread, the clamping knob 73 is in threaded connection with the protruding joint 71, an outer diameter of the protruding joint 71 is gradually increased from the protruding joint 71 to a valve body direction, and a minimum outer diameter of the protruding joint 71 is adapted to an inner diameter of the second protruding joint 72.

Through the connection between the first three-way valve 5 and the second three-way valve 6, a new passage can be formed between the first syringe 1 and the second syringe 2, at the moment, the first three-way valve 5 and the second three-way valve 6 are adjusted to disconnect the connection between the syringe and the infusion tube 3, a doctor pushes the piston handle of the first syringe 1 and the piston handle of the second syringe 2 in a staggered manner, the device can be used for uniformly mixing medicines and foaming the medicines, the connection between the first three-way valve 5 and the second three-way valve 6 is disconnected, at the moment, the first three-way valve 5 and the second three-way valve 6 are adjusted to be communicated with the syringe and the infusion tube 3, at the moment, the device can be used for simultaneously injecting medicines to the lesion part of a patient, and is suitable for two clinical medical treatment modes.

Preferably, the clamping knob 73 is divided into a sleeve 74 and a fixed pipe 75, the sleeve 74 is fixedly attached to the fixed pipe 75, an inward concave chute 76 is arranged on the inner wall of the fixed pipe 75, a limiting ring 77 which is matched with the chute 76 in size is protruded on the surface of the protruded joint 71, the limiting ring 77 is arranged in the chute 76, the inner diameter of the sleeve 74 is matched with the outer diameter of the second protruded joint 72, and the inner diameter of the fixed pipe 75 is matched with the outer diameter of the protruded joint 71.

The second protruding joint 72 and the protruding joint 71 are rotationally clamped through the clamping knob 73, so that tight connection between the second protruding joint 72 and the protruding joint 71 is guaranteed, looseness cannot be generated, and the fact that the second protruding joint 72 and the protruding joint 71 are disconnected when a doctor foams is prevented from causing foaming agent to be sprinkled out is avoided.

Preferably, the first three-way valve 5 and the second three-way valve 6 are T-shaped three-way valves capable of controlling the opening and closing of the flow of 3 interfaces.

Compared with an L-shaped three-way valve, the T-shaped three-way valve can realize more diversion directions of liquid and is more flexible.

Preferably, the tail end of the piston handle 8 of the first syringe 1 is provided with a fixed block 81, the protruding direction of the fixed block 81 is perpendicular to the moving direction of the piston handle 8, a limiting groove 82 with the extending direction consistent with the protruding direction of the fixed block 81 is arranged in the fixed block 81, the tail end of the piston handle 8 of the second syringe 2 is provided with a limiting block 83, the cross section of the limiting groove 82 is isosceles trapezoid, and the limiting block 83 is an isosceles trapezoid column with the same size as the cross section of the limiting groove 82.

The limit groove 82 and the limit groove 82 are matched adaptively, so that the limit groove 82 and the limit groove 83 form a mortise and tenon structure, the limit groove 83 cannot shake everywhere, two piston handles 8 can move at the same speed simultaneously when the fixed block 81 is pressed, the problem that the injection speed is uneven due to separate injection of two hands of a doctor is avoided, and the function of 1:1 injection of medicament is achieved.

Preferably, the injection device further comprises a mixing cavity 4, the left ends of the two infusion tubes 3 are all in through connection with the mixing cavity 4, the inner diameter of the mixing cavity 4 is larger than twice the inner diameter of the infusion tube 3, and the front end of the mixing cavity 4 is connected with an injection needle.

The mixing cavity 4 is used for mixing the pingyangmycin and the fibrin glue before entering the lesion of a patient when two medicaments are injected simultaneously, and then the mixture is injected into the lesion of the patient, and the mixing cavity 4 with larger inner diameter can also prevent the mixed medicaments from forming gel-like substances to block the infusion tube.

Further, the inner diameter of the injection needle is smaller than the inner diameter of the infusion tube 3, so that the medicine liquid is fully mixed in the mixing cavity 4.

Preferably, the filter screens are arranged at the joints of the mixing cavity 4 and the two infusion tubes 3, and are of fine and porous structures, so that the liquid medicine can be changed into fine and split flows through the fine and porous filter screens, and the liquid medicine is mixed more uniformly.

Preferably, the inner wall of the protruding joint 71 is provided with a porous structure 78, and the porous structure 78 is distributed over the protruding joint 71.

The porous structure in the protruding joint 71 can make the air and the liquid medicine mixed more evenly and finely, and the effect of the foam hardener is better.

Preferably, the infusion tube 3 and the mixing cavity 4 are coated with anti-adhesion layers, and the anti-adhesion layers can effectively prevent the liquid medicine from adhering to the inner walls of the infusion tube 3 and the mixing cavity 4, so that waste is caused.

Preferably, the first injector 1 and the second injector 2 are connected by adopting an elastic clamping plate 9, the elastic clamping plate 9 wraps needle positions of the first injector 1 and the second injector 2, and the left side and the right side of the elastic clamping plate 9 clamp needle cylinder positions of the first injector 1 and the second injector 2.

The elastic clamping plate 9 is used for fixing the first syringe 1 and the second syringe 2, so that when a doctor pushes the fixing block 81, the first syringe 1 and the second syringe 2 can be fixed by the elastic clamping plate 9, and the doctor can push at a constant speed conveniently.

When the utility model is actually used, the utility model is divided into two use cases, when the two use cases are required to be uniformly mixed in advance, the convex joint 71 of the first three-way valve 5 and the second convex joint 72 of the second three-way valve 6 are fixedly connected in a sealing way through the clamping knob 73, a new passage can be formed between the first syringe 1 and the second syringe 2, the connection between the first three-way valve 5 and the second three-way valve 6 and the infusion tube 3 is disconnected, a doctor pushes the piston handle of the first syringe 1 and the piston handle of the second syringe 2 in a staggered way, the device can be used for uniformly mixing medicines and foaming the medicines, then the obtained foam hardening agent is stored in the first syringe 1, the first three-way valve 5 is regulated to be communicated between the first syringe 1 and the infusion tube 3, and the foam hardening agent can be injected into a lesion part of a patient after the communication between the first syringe 1 and the infusion tube 3 is re-opened; when the pingyangmycin and the fibrin glue need to be injected simultaneously, the connection between the first three-way valve 5 and the second three-way valve 6 is disconnected, the first three-way valve 5 and the second three-way valve 6 are adjusted to the state that the injector is communicated with the infusion tube 3, the limiting block 83 is arranged in the limiting groove 82, the fixed block 81 is pressed to push, at the moment, the injection speed of the first injector 1 and the injection speed of the second injector 2 are consistent, and the quantity of medicaments entering the lesion part of a patient is guaranteed to be 1:1, so that the device is suitable for two clinical medical treatment modes.

Therefore, according to the injection device, through switching of the first three-way valve 5 and the second three-way valve 6, two functions of the injection device are realized, and the injection device is convenient for medical staff to use.

The utility model has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the utility model. It should be noted that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. An injection device comprising a first syringe (1) and a second syringe (2), characterized in that: the joint of first syringe (1) with the joint of second syringe (2) seals the joint of gluing respectively and has a transfer line (3), the first syringe (1) is connected the outer wall line of transfer line (3) is last to be sealed to be equipped with first three-way valve (5), the second syringe (2) is connected the transfer line (3) is last to be sealed to be equipped with second three-way valve (6), the external diameter of the protruding joint (71) of first three-way valve (5) with the internal diameter of the second protruding joint (72) of second three-way valve (6) suits, cup joint chucking knob (73) on the outer wall of protruding joint (71), the internal thread has on the inner wall line of chucking knob (73), the external thread that matches with the internal thread of protruding joint (71) is threaded connection in coordination, the external diameter that protruding joint (71) from protruding joint (71) to the internal diameter gradually increases, protruding joint (71) minimum external diameter adaptation that connects with second joint (72).

2. An injection device according to claim 1, wherein: the clamping knob (73) is divided into a sleeve (74) and a fixed pipe (75), the sleeve (74) is fixedly attached to the fixed pipe (75), a concave sliding groove (76) is formed in the inner wall of the fixed pipe (75), a limiting ring (77) which is adaptive to the sliding groove (76) in size is arranged on the surface of the protruding joint (71) in a protruding mode, the limiting ring (77) is arranged in the sliding groove (76), the inner diameter of the sleeve (74) is adaptive to the outer diameter of the second protruding joint (72), and the inner diameter of the fixed pipe (75) is adaptive to the outer diameter of the protruding joint (71).

3. An injection device according to claim 1, wherein: the first three-way valve (5) and the second three-way valve (6) are T-shaped three-way valves capable of controlling the opening and closing of the flow of 3 interfaces.

4. An injection device according to claim 1, wherein: the tail end of a piston handle (8) of the first injector (1) is provided with a fixed block (81), the protruding direction of the fixed block (81) is perpendicular to the moving direction of the piston handle (8), a limiting groove (82) with the extending direction being consistent with the protruding direction of the fixed block (81) is arranged in the fixed block (81), the tail end of the piston handle (8) of the second injector (2) is provided with a limiting block (83), the cross section of the limiting groove (82) is isosceles trapezoid, and the limiting block (83) is an isosceles trapezoid column with the same size as the cross section of the limiting groove (82).

5. An injection device according to claim 1, wherein: the injection device further comprises a mixing cavity (4), the left ends of the two infusion tubes (3) are all in through connection with the mixing cavity (4), the inner diameter of the mixing cavity (4) is larger than twice the inner diameter of the infusion tubes (3), and the front end of the mixing cavity (4) is connected with an injection needle.

6. An injection device as claimed in claim 5, wherein: the filter screens are arranged at the joints of the mixing cavity (4) and the two infusion tubes (3), and are of fine and porous structures.

7. An injection device according to claim 1, wherein: the inner wall of the protruding joint (71) is provided with a porous structure (78), and the whole protruding joint (71) is fully distributed by the porous structure (78).

8. An injection device as claimed in claim 6, wherein: anti-sticking layers are coated in the infusion tube (3) and the mixing cavity (4).

9. An injection device according to claim 1, wherein: the first injector (1) is connected with the second injector (2) through an elastic clamping plate (9), the elastic clamping plate (9) wraps the needle head part of the first injector (1) and the needle head part of the second injector (2), and the left side and the right side of the elastic clamping plate (9) clamp the needle cylinder part of the first injector (1) and the needle cylinder part of the second injector (2).