JP2002369886A - Side injection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side injection device side-injecting a liquid chemical without using an injection needle and completely eliminating the injection needle erroneous piercing accidents and hospital infection accidents of persons engaged in medical treatment and patients. SOLUTION: On one surface of the middle part of a tube main body 1 provided with the connection part 3 of a liquid guiding tube 2 on both ends, a movable body 5 provided with a receiving port 6 connectable to the tip tube S' of a syringe S is brought into slidable contact and held movably. On the slidable contact surface of the movable body 5 and the tube main body 1, a hole 8 communicated to the receiving port 6 and the hole 9 communicated with the inside of the tube main body are oppositely provided. By the moving position of the movable body 5, the two holes 8 and 9 are made communicated or not communicated with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device which is installed in an extracorporeal blood circuit or a transfusion or infusion set used for treatment of renal insufficiency or the like so that a necessary drug solution can be injected into a patient in a timely manner. Note This is for the device.

[0002]

2. Description of the Related Art In general, a side injection device is provided in an extracorporeal blood circuit or a transfusion or infusion set used for treatment of a patient with renal failure. As shown in FIG. 5, this conventional side injection device is provided with a standing pipe 54 on the upper surface of an intermediate portion of a tube main body 53 having a connecting portion 52 for a liquid guide tube 51 at both ends. A cap 56 was formed by partially exposing and holding the rubber stopper 55 through which S ″ could be pierced.

In the above-mentioned conventional side injection device, an injection needle S "connected to a front tube S 'of a syringe S via a needle base is pierced into a rubber stopper 55 exposed from a cap 56, and a plunger is pushed as shown by an arrow. The rubber stopper 55 is immediately closed by the elasticity of the material of the rubber stopper 55 when the injection needle S ″ is pulled out after the injection of the drug solution. The side injection work does not cause any obstacle to the original treatment work for connecting the patient with the extracorporeal blood circuit, blood transfusion or infusion set.

[0004]

However, as described above, a protective cap (not shown) is immediately provided on the injection needle withdrawn from the rubber stopper 55 after the injection of the drug solution, and the injection needle is attached together with the protective cap. Although it is removed from the syringe and discarded separately, there is a possibility that the needle tip of the injection needle may be pierced into the finger when the protective cap is applied to the injection needle, and the infectious carrier carries the needle tip of the injection needle. If blood adhered, infection could occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to allow side injection of a drug solution without using a needle, and to prevent accidental puncture of a needle by a medical worker or patient. Another object of the present invention is to provide a side injection device that eliminates no hospital infection accident.

[0006]

In order to achieve the above-mentioned object, the present invention provides a receiving port to which a front pipe of a syringe can be connected on one surface of an intermediate portion of a pipe main body having connection portions for liquid guide tubes at both ends. The movable body having a movable body is slidably held, and a hole communicating with the receiving port and a hole communicating with the inside of the tube body are provided on a sliding contact surface between the movable body and the tube body. The two holes can be made conductive or non-conductive depending on the movable position of the movable body.

According to a second aspect of the present invention, the movable body is rotated along the circumferential direction or along the axial direction into a cylindrical body which is overlapped with the pipe main body at right angles. It is characterized by being able to slide or rotate or slide in four directions starting from one neutral point, and can be easily operated by rotating, sliding, or operating in all directions around the neutral point. The structure is such that conduction and non-conduction between the two holes can be controlled.

Further, in the invention according to a third aspect, all or a part of at least one sliding contact surface of the movable body or the pipe main body provided with the hole is made of an elastic material having the hole. And the liquid-tight performance of conduction and non-conduction between the two holes can be further improved.

[0009]

Next, an embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view of the side injection device of the present application, FIG. 2 is an exploded perspective view of the side injection device of the present application, FIG. 3 is a sectional view showing the operation of the side injection device of the present application, and FIG. 4 regulates the movable direction and range of the movable part. It is a top view showing a guide groove.

In FIG. 1, reference numeral 10 denotes a side injection device of the present application. The side injection device 10 of the present application includes a tube body 1 having connection portions 3 of a liquid guide tube 2 at both ends, and a tubular body 4 integrally laminated on one surface of an intermediate portion of the tube body 1. Although the cylindrical body 4 is orthogonal to the pipe main body 1 in the drawing, it may be oblique or parallel to the pipe main body 1. Although not shown, the liquid guide tube 2 connects the extracorporeal blood circuit to the patient, a vial of a blood transfusion or infusion set, and the patient.

A movable body 5 is movably held in the tubular body 4 so as to slide on one surface of the tube body 1. The movable body 5 is provided with a receiving port 6 to which a front tube S 'of the syringe S can be connected. The receiving port 6 is exposed through a guide groove 7 provided on the upper surface 4a of the cylindrical body 4, and the movable direction and the movable range are regulated by the guide groove 7.

In the present embodiment, the cylindrical body 4 is, as shown in FIG.
It is formed in two parts in the horizontal direction, and its lower surface portion 4b is fixed to the upper surface of the tube main body 1 so as to form a part of the tube main body 1. The upper surface portion 4a is the lower surface portion after housing the movable body 5. 4b. The receiving port 6 may be later coupled to the movable body 5 through a guide groove 7 provided in the upper surface 4a of the tubular body 4.

Lower surface of the movable body 5 (sliding contact surface with the tube body)
A hole 8 communicating with the receiving port 6 is provided, and a hole 9 communicating with the inside of the tube body 1 is also provided on the lower surface 4b (sliding contact surface with the movable body) of the tubular body 4. I have. The two opposing holes 8 and 9 allow the movable body 5 to be connected to the guide grooves 7.
At one position when they are moved along (conducting), and are shifted from each other (non-conducting).

As shown in FIG. 2, an elastic material (for example, a soft plastic material or a rubber material) D having the hole 8 is fitted into the lower surface of the movable body 5 so that the two holes 8 and 9 are electrically connected or In some cases, the configuration is such that higher liquid tightness can be achieved during non-conduction. The lower surface 4b of the cylindrical body 4 forming the sliding contact surface with the movable body 5 may be made of an elastic material having the hole 9.

In the present embodiment, the two holes 8 and 9 are electrically connected in a state where the outer surface of the receiving port 6 of the movable body 5 stands against the groove end 7a of the guide groove 7 as shown in FIG. And FIG.
As shown in (a), when the outer surface of the receiving port 6 of the movable body 5 is inclined so as to come into contact with the other groove end 7b of the guide groove 7, a non-conductive state is established. Needless to say, the two holes 8 and 9 may be electrically connected to each other when the receiving port 6 is inclined, and may be in a non-conductive state when the receptacle 6 is upright.

The movable direction and range of the movable body 5 are regulated by a guide groove 7 provided on the upper surface 4a of the tubular body 4 exposing the receiving port 6. For example, as shown in FIG. 4A, when the guide groove 7 is formed so as to rotate between two points A and B in the circumferential direction of the upper surface 4a of the tubular body 4, The two holes 8 and 9 are electrically connected at one rotation point A and are not electrically connected at another rotation point B, but may be set to the opposite.

Further, as shown in FIG.
Is formed so as to slide between two points A and B in the sliding direction of the upper surface 4a of the tubular body 4,
The two holes 8 and 9 may be conductive at one slide point A and non-conductive at another slide point B, or vice versa.

Further, as shown in FIG. 4C, the guide groove 7 is movable toward each point B in four directions (three directions may be provided) starting from one neutral point A. When formed, the two holes 8 and 9 may conduct at the neutral point A and become non-conductive at the other movable point B, or vice versa.

Next, the operation will be described. First, the side injection device 10 of the present application is installed in the middle of the liquid guide tube 2 of the extracorporeal blood circuit (not shown). In this case, of course, the receiving port 6 of the movable body 5 is inclined as shown in FIG. 3B, and the hole 8 communicating with the receiving port 6 and the hole 9 communicating with the inside of the tube body 1 are not formed. Conducted (closed). Dialysis treatment or the like is performed in this state.

In such a situation, when it becomes necessary to inject and treat a necessary drug solution for the patient, a syringe S containing the drug solution is required.
Of the movable pipe 5 is connected to the receiving pipe 6 of the movable body 5 by removing air bubbles. Next, together with the syringe S, the socket 6 is inserted into the guide groove 7.
3A, the movable body 5 is in a standing state as shown in FIG. 3A, and the two holes 8 and 9 are electrically connected to each other.

Next, by pushing the plunger of the syringe S, the drug solution can be injected into the blood (infusion) passing through the liquid guide tube. When the injection operation is completed, the syringe S is immediately inserted through the receiving port 6 of the movable body 5.
3 is moved along the guide groove 7 together with the syringe S in a state where the tip tube S 'of FIG.
As shown in (b), the two holes 8 and 9 are made non-conductive. Thereafter, the syringe S is withdrawn from the receptacle 6. This has no effect on the original treatment work between the patient and the extracorporeal blood circuit (blood transfusion or infusion set),
A series of chemical side injection work is completed.

The injection device 10 of the present application has been described for injecting a drug solution. However, when the injection device 10 of the present application is applied to an extracorporeal blood circuit, it may of course be used for blood collection (inhalation into a syringe). is there.

Further, although not described in the above embodiment, the receiving port 6 of the movable body 5 is biased by a spring so that the hole communicating with the receiving port and the hole communicating with the inside of the tube body are always in a non-conductive state. In some cases, it is configured to automatically return from the conductive state to the non-conductive state.

[0024]

As described above, according to the present invention, a movable body having a receiving port to which a leading pipe of a syringe can be connected is provided on one surface of an intermediate portion of a tube main body having connection portions for liquid guide tubes at both ends. To the sliding contact surface between the movable body and the pipe body,
Since the hole communicating with the receiving port and the hole communicating with the inside of the tube body are provided opposite to each other, the tip tube of the syringe is connected to the receiving port of the movable part, and the movable part is moved in the coupled state. The holes provided in the sliding contact surface between the movable part and the tube body are electrically connected to each other to inject the chemical, and after the injection, the movable part is moved to make the holes non-conductive and the front end of the syringe from the receiving port. By removing this, there is an excellent effect that the medicinal solution injection operation can be completed quickly without affecting the original treatment operation connecting the extracorporeal blood circuit (blood transfusion or infusion set) and the patient.

According to a second aspect of the present invention, there is provided the apparatus according to the first aspect, wherein the movable body is pivoted along the circumferential direction or slid along the axial direction into the tubular body superimposed on the pipe main body. Since it is characterized in that it rotates or slides in four directions starting from one neutral point, two holes, a hole communicating with the receiving port and a hole communicating with the inside of the pipe body, are operated by rotating the movable part. There is an excellent effect that conduction and non-conduction can be easily controlled by sliding operation or operation in four directions around the neutral point.

Further, in the invention according to a third aspect, all or a part of at least one sliding contact surface of the movable body or the pipe body provided with the hole is formed of an elastic material having the hole. Therefore, there is an excellent effect that the liquid-tight performance of conduction and non-conduction between the two holes can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a side injection device of the present application.

FIG. 2 is an exploded perspective view of the side injection device of the present application.

FIGS. 3A and 3B are cross-sectional views showing the operation of the side injection device of the present application, wherein FIG. 3A shows a state in which conduction is established between a port of the movable part and the inside of the tube body, and FIG. It is at the time of conduction.

FIGS. 4A and 4B are plan views showing grooves of a guide member for restricting a movable direction of a movable portion, wherein FIG. 4A shows a rotation guide groove, FIG. 4B shows a slide guide groove, and FIG. It is a guide groove to have.

FIG. 5 is a perspective view showing a conventional side injection device and an injection needle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Injection apparatus on the side of this application 1 Tube main body 2 Liquid guide tube 3 Connection part 4 Cylindrical body 4a Upper surface part 4b Lower surface part 5 Movable body 6 Reception port 7 Guide groove 7a, 7b Groove end of guide groove 8 Hole communicating with reception port 9 Tube Hole communicating with the main body D Elastic material S Syringe S 'Syringe tip S' Injection needle 51 Liquid guide tube 52 Connection 53 Tube body 54 Standing tube 55 Rubber stopper 56 Cap

Claims (3)

[Claims] 1. A movable body having a receptacle to which a leading pipe of a syringe can be connected is slidably held on one surface of an intermediate portion of a tube main body having connection portions for liquid guide tubes at both ends, the movable body being connected to the movable body. A side injection device characterized in that a hole communicating with the receptacle and a hole communicating with the inside of the pipe body are provided on a sliding contact surface with the pipe body. 2. The movable body may rotate in a circumferential direction, slide along an axial direction, or slide in an axial direction in a cylindrical body superimposed on the tube main body, starting from one neutral point. The side note device according to claim 1, wherein the side note device rotates or slides. 3. The sliding body according to claim 1, wherein at least one of the sliding surfaces of the movable body or the tube body provided with the hole is made of an elastic material having the hole.
The side note device according to 1.