JPS59155255A - Connector with valve body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Background Technical Field of the Invention The present invention relates to a connector with a valve body that is suitable for use particularly in extracorporeal circulation using a heart-lung machine, extracorporeal circulation using an artificial kidney apparatus, and the like.

Prior Art FIG. 1 is a circuit diagram showing a general extracorporeal circulation circuit for perfusing blood outside the body during heart surgery.

One end of the circulation tube 1 is connected to a vein of the human body 2, the other end of the circulation tube 1 is connected to an artery, and the middle part of the circulation tube 1 is connected to the arterial blood by removing carbon dioxide from the venous blood and adding oxygen. artificial lung 3, whose blood is transferred to the human body 2
It has a blood pump (artificial stone) 4 that sends blood into the blood vessel. In addition to the artificial lung 3 and the blood pump 4, a blood storage tank 5, a heat exchanger 6, and a filter 7 are installed in the middle part of the circulation tube 1.
etc. are provided.

Here, in the extracorporeal circulation circuit having the oxygenator 3 and the blood pump 4, in order to test whether or not the oxygenator 3 is performing proper gas exchange work, for example, It is necessary to detect oxygen partial pressure, enzymatic dioxide partial pressure, and pH.

However, in the conventional extracorporeal circulation circuit, the middle part of the circulation tube 1 is formed of a rubber tube or the like, and after blood is collected with a syringe inserted into the rubber tube, the blood is sent to a blood gas analyzer. Because it involves analysis, it requires a considerable amount of manpower, and it is difficult to perform continuous testing to ensure patient safety.

It is also possible to incorporate a detector into any part of the circulation tube 1 in order to continuously perform gas analysis of the blood perfusing the extracorporeal circulation circuit, but in that case,
The piping system of the circulation tube 1, which includes the oxygenator 3, blood pump 4, blood storage tank 5, heat exchanger 6, filter 7, etc., becomes more complicated and its handling becomes complicated. There is a risk that blood clots or the like may adhere to the internal parts, and stable and highly reliable detection results cannot always be expected.

■ Purpose of the Invention The object of the present invention is to provide a connector with a valve body that allows a rod-shaped body to be inserted in a liquid-tight or air-tight state into a passage communicating with a passage of a tube that allows fluid to circulate. do.

■Structure of the Invention In order to achieve the above object, the connector with a valve body according to the present invention has at least two open ends connected to the open ends of the tube, and the open ends are connected to each other. A connector body that shoulders a communicating flow path and has a passageway that communicates with the flow path;
A rod-shaped body is inserted into the passage in a tight state, and a valve body is provided so as to close the passage when the rod-shaped body is not inserted, and a guide portion is provided on the valve body to guide the insertion of the rod-shaped body. This is how it was done.

Further, in the valve body-equipped connector according to the present invention, the guide portion of the valve body has a ml incision that opens only on one end surface of the valve body;
It consists of a second cut that opens only on the other end surface, and the first cut and the second cut intersect inside.

Further, in the valve body-equipped connector according to the present invention, the valve body is made of a flexible and elastic material.

Further, in the valve body-equipped connector according to the present invention, the first notch of the valve body is composed of a plurality of mutually intersecting notches,
The second cut is made up of a plurality of cuts that intersect with each other, and the first cut and the second cut intersect at a single position inside the valve body.

Further, in the valve body-equipped connector according to the present invention, the first notch of the valve body is composed of a plurality of notches that do not intersect with each other, and the second notch is composed of a plurality of notches that do not intersect with each other, The first cut and the second cut intersect at multiple positions inside the valve body.

Moreover, in the valve body-equipped connector according to the present invention, the end face of the valve body is formed into a convex shape.

(2) Detailed Description of the Invention FIG. 2 is a cross-sectional view showing a valve body-equipped connector according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view showing the fitting part taken out. The extracorporeal circulation circuit 10 includes, for example, a valve-equipped connector 13 interposed between a first tube 11 connected to a vein in the human body and a second tube 12 connected to an artery in the human body. There is. Each of the tubes 11 and 12 and the connector with valve body 13 communicate with each other through channels 11A and 12A, respectively.
.

13A, mutually forming a circulation pipe, and an artificial lung, a blood pump, etc. similar to that shown in FIG. ing.

The connector 13 with a valve body has two open ends 13D.

Flow path forming part 1 forming the flow path 13A together with 13E
3F, and an opening 13C having an opening 13B that is perpendicular to the flow path 13A and allows a rod-shaped body, for example, a detector 14 to be inserted into the flow path 13A, and an opening 13B of the opening 13C.
In addition to defining the inside and outside of the circulation piping, the detector 14
A valve body 15 is disposed that allows the detector to be inserted into the opening 13B of the flow path 13A1 in a liquid-tight state and closes when the detector 14 is not inserted. The valve body 15 is positioned in the opening 13B while being held between the valve body-equipped connector 13 and the cap 16♂ fitted to the valve body-equipped connector 13.

The cap 16 has a passage 1 through which the detector 14 can be inserted.
6A is formed.

The valve body 15 is made of synthetic rubber such as silicone rubber, urethane rubber, or fluororubber, or natural rubber or other flexible elastic material.

Here, as shown in FIG. 4, the guiding portion of the valve body 15 has a first notch 17 that opens only on one end surface, and a second notch 18 that opens only on the other end surface.
are carved, and the first notch 17 and the second notch 18
are located inside the valve body 15 and intersect with each other. That is, the first notch 17 and the second notch 18 form an intersection 19 that is separated by a distance, and therefore the detector 14 detects the first notch 17 and the second notch 18 under elastic deformation of the valve body 15. of .

It is made to be able to pass through the notches 18 and their intersections 19.

FIG. 5 is an explanatory diagram showing the deformation direction of the first notch 17 and the second notch 18 when the detector 14 is inserted into the valve body 15, and FIG.
FIG. 4 is an explanatory diagram showing the opening shapes of the first notch 17 and the second notch 18 in the case where the first notch 17 and the second notch 18 are inserted. When the valve body 15 is sliced into three characteristic parts in its axial direction, namely, a part where only the first notch 17 exists, a part where the intersection 19 exists, and a part where only the second notch 18 exists, 15A as shown in Figure 5 (1)
to 15C(7) 3 parts. If the valve body 15 is simply made up of three separate parts as shown in 15A to 15C above, the direction of deformation of each cut 17 and 18 when inserting the detector 14 is The state shown by the arrow in (2) in Figure 5 is reached, and the opening shape of each cut 11, 1"8 after insertion is as shown in (2) in Figure 6.
The state shown in 1) is reached. However, since the valve body 15 is originally one piece, each slice portion is influenced by other adjacent portions, and when trying to insert the detector 14, the deformation direction of each cut 17, 18 is the fifth. (
As shown by the arrow in 3), the shape changes continuously in the axial direction inside the valve body 15, and the opening shape of each notch 17, 18 after insertion becomes the state shown in (2) in FIG. . In other words, even if the outer diameter of the area around the detection a14 inserted into the valve body 15 is relatively small,
Even in the case of a relatively large outer diameter, each cut 17.1
8, it is pressed continuously in the axial direction without any gaps.

Here, since the valve body 15 is made of a flexible and elastic material as described above, each of the notches 17 and 18 is in close surface contact with the outer circumference of the detector 14, and the valve body 15 and the detector 14 are in close contact with each other. forms a reliable liquid-tight condition. Note that the distance between the intersection 19 of the first notch 17 and the second notch 18 is determined according to the maximum outer diameter of the detector 14 inserted into the valve body 15.

In the present invention, the guide portion of the valve body refers to a cut or the like that guides the insertion of the rod-shaped body, and its form is not particularly limited.

(2) Specific Effects of the Invention The effects of the above embodiment will be explained below. The extracorporeal circulation circuit 10 in which an artificial lung, a blood pump, etc. are interposed,
When connected to the human body, each flow path 11A to 1 of the first tube 11, second tube 12, and valve body connector 13
3A produces an end flow of blood. Here, the connector with valve body 1
Since the valve body 15 is disposed in the opening 13B of the valve body 13, and the first notch 17 and the second notch 18 of the valve body 15 are in a closed state, blood flows into the opening 13B of the valve body attached connector 13.
There is no leakage to the outside. In addition, since the notches 17 and 18 of the valve body 15 do not open to the other end face, the valve body 15 has high pressure resistance against the blood pressure lζ acting on the end face of the valve body 15, and is resistant to deformation due to the blood pressure. Not maintain a stable closed state.

In the blood perfusing the extracorporeal circulation circuit 10 as described above,
When inspecting whether proper gas exchange is being performed, the detector 14 corresponding to the inspection item is passed through each notch 17, 18 of the passage 16A1 of the cap 16 and the valve body 15.
It is inserted into the opening 13B1 of the valve-equipped connector 13 and the flow path 13A, so that it is possible to continuously detect oxygen partial pressure, carbon dioxide partial pressure, pH, etc. in blood. Here, each notch 17 of the valve body 15
18 is in close contact with the periphery of the detector 14 without any gaps, maintaining a liquid-tight state and preventing blood from leaking.

When the detector 14 completes the desired detection operation or when a blood clot or the like adheres to the detector 14 located inside the valve connector 13 and the detector 14 needs to be replaced, The detector 14 is removed from each notch 17,18 of the valve body 15. Here, each notch 17 and 18 of the valve body 15
forms a complete closed state as soon as the detector 14 is withdrawn, preventing blood from flowing out. Note that since each of the notches 17 and 18 of the valve body 15 is opened only on one end face of the valve body 15, the force to the closed state is strong when the detector 14 is removed; There is no reverse opening operation on the end face side.

According to the above embodiment, the detector 14 can be placed in the valve-equipped connector 13, and it is possible to continuously detect oxygen partial pressure, carbon dioxide partial pressure, pH, etc. in the blood. This makes it possible to ensure patient safety.

Further, the detector 14 can be installed inside the valve body connector 13 after the extracorporeal circulation circuit 10 is set up on the patient.
There is no need to complicate handling of the piping system. In addition, the detector 14 can be easily connected to the connector 13 with a valve body during the extracorporeal circulation process.
For example, when a blood clot or the like adheres, it can be removed and replaced with a new detector 14 quickly and easily. Moreover, each notch 17, 18 of the valve body 15 can be used even when the outer diameter of the inserted detector 14 is relatively small.
Even if it is relatively thick, it is in close contact with the periphery of the detector 14 without any gaps, so it can be in close contact with any of the detectors 14 having different outer diameters in a liquid-tight state.

In addition, although the above embodiment describes the case where the present invention is applied to an extracorporeal circulation circuit using an artificial heart-lung machine, the present invention can be similarly applied to an integral extracorporeal circulation circuit equipped with an artificial kidney device. be. Further, the rod-like detector of the present invention may be one that detects the internal pressure, temperature, flow path, etc. of a blood circuit. In addition to the above, the rod-shaped body may include the tip of a syringe, and is not particularly limited as long as it needs to be inserted into the fluid through the valve body. In addition, the open end portions 13D, 1 of the connector with valve body 13
In addition to the tubes 11 and 12 described above, an artificial heart-lung machine or an artificial kidney machine may be directly connected to 3E. In the present invention, the open end of the flow path forming portion includes the open end of the tube.

FIGS. 7(5) and (B) show the first valve body of the present invention.
It is an explanatory view showing a modification. In this valve body 40,
A cut 41A in which the first cuts 41 intersect with each other,
41B, the second cut 42 consists of mutually intersecting cuts 42A, 42B, and the first cut 4
1 and the second notch 42 intersect at a single position inside the valve body 40. According to this valve body 40,
Under conditions in which the lengths of each notch 41 and 42 are made relatively short, it is possible to increase the deformability of each notch 41 and 42, and it is possible to increase the deformability of each notch 41 and 42. It becomes possible to also insert a detector.

The eighth part and (B) are explanatory views showing a second modified example of the valve body in the present invention. In this valve body 50, the first
A cut 51A in which the cuts 51 do not intersect with each other,
51B and 51C, the second notch 52 is made up of notches 52A, 52B, and 52C that do not intersect with each other, and the first notch 51 and the second notch 52 are connected to the valve body 5.
They intersect at 9 positions inside 0. Therefore, with this valve body 50, it is possible to insert and hold a maximum of nine detectors at the same time.

Figures 9 fA) and (B) show the third valve body of the present invention.
It is an explanatory view showing a modification. This valve body 60 has a first notch 61 and a second notch 62, and each end face 63,64 is convex. Therefore, according to the detector installation structure using this valve body 60, the blood pressure acting on the end of the valve body 60 is directed toward the center of the valve body 60, and the closed state of the valve body 60 and the detector are It becomes possible to more reliably form a liquid-tight state with respect to the

FIG. 10 is an explanatory view showing a connector with a valve body using a fourth modified example of the valve body in the present invention. The difference between this fourth modification and the embodiment shown in FIGS. 2 and 3 is that instead of the valve body 15 in the embodiment, a pair of first valve bodies 7 are provided.
1 and the second valve body 72 are used. As shown in FIG. 11, the first valve body 71 has a circular lower part 1A at its center and can prevent blood leakage when the detector is inserted through the detector, and the second valve body 72 has It has a slit 72A in its center, making it possible to prevent blood from flowing out under μ without passing the detector through it. Therefore, such a first valve body 7
Even when a set of valve bodies consisting of the first and second valve bodies 72 is used, the state of blood flowing in the circulation circuit can be continuously detected with high reliability.

In the present invention, the fluid circulating in the tube is not limited to liquids such as blood, but also includes, for example, gas in the breathing circuit.

■ Specific Effects of the Invention As described above, the connector with a valve body according to the present invention has at least two open ends connected to the open ends of the tube, and the open ends are connected to each other. A connector main body having a flow path communicating with the flow path and a passage communicating with the flow path, and a rod-shaped body inserted into the passage in a tight state, and provided so as to close the passage when the rod-shaped body is not inserted. The valve body is provided with a guide portion for guiding the insertion of the rod-like body into the valve body.

Therefore, the rod-like body can be inserted in a liquid-tight or air-tight state into a passage communicating with a channel of a tube that allows fluid to circulate.

Further, in the valve body-equipped connector according to the present invention, the guide portion of the valve body has a first notch that opens only on one end surface thereof;
It consists of a second notch that opens only on the other end face, and the first notch and second notch intersect within the second notch, so that a wide range of palpitations with various outside diameters can be passed through the flow path. The rod-like body is inserted and held in close contact with the flow path to reliably prevent fluid leakage, and when the rod-shaped body is suddenly pulled out of the flow path, fluid leakage is reliably prevented.Furthermore, the structure is simplified by providing a single valve body. It becomes possible to convert into

Further, in the valve body-equipped connector according to the present invention, the valve body is made of a flexible elastic material, so that each notch of the valve body is in close surface contact with the outer circumference of the rod-shaped body, and the valve body is made of a flexible and elastic material. It becomes possible to ensure close contact between the body and the rod-shaped body.

Further, in the valve body-attached connector according to the present invention, the first notch of the front valve body is made up of a plurality of mutually intersecting notches, and the second notch is made of a plurality of mutually intersecting notches. The first notch and the second notch.
By intersecting the notches at a single position inside the valve body, it is possible to increase the deformability of each notch while making the length of each notch relatively short. It becomes possible to insert and hold a rod-shaped body having a large specific outer diameter through the valve body.

Further, in the valve body-attached connector according to the present invention, the first notch of the valve body is made up of a plurality of notches that do not intersect with each other, and the second notch is made of a plurality of notches that do not intersect with each other. By intersecting the first notch and the second notch at a plurality of positions inside the valve body, a plurality of insertion positions of the rod-like body with respect to the valve body are formed, and a plurality of rod-like bodies are inserted into the valve body at the same time. It becomes possible to insert it.

In addition, in the valve body-equipped connector according to the present invention, by making the end face of the valve body convex, fluid pressure acting on the end face of the valve body is directed toward the center of the valve body, and the valve body is in a closed state. Also, it becomes possible to more reliably form Cζ in close contact with the rod-shaped body.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing an example of a general extracorporeal circulation circuit, Fig. 2 is a sectional view showing a connector with a valve body according to an embodiment of the present invention, and Fig. 3 shows the main part of Fig. 2. FIG. 4 (5) is a perspective view of the valve body in FIG. 2, FIG. 4 (5) is a plan view of the valve body, and FIG. 5 is an explanatory diagram showing the deformation direction of each notch provided in the valve body, FIG. 6 is an explanatory diagram showing the opening shape of each notch provided in the valve body, and FIG. 7 (5) is an explanatory diagram showing the deformation direction of each notch provided in the valve body. FIG. 7(B) is a side view of FIG. 7(5), and FIG. 8 is a plan view showing a second modification of the valve body of the present invention. , Figure 8(B) is Figure 8(5)
9(5) is a plan view showing a third modification of the valve body according to the present invention, FIG. 9) is a side view of FIG. 9(8), and FIG. 10 is a side view of the valve body according to the present invention. FIG. 11 is a cross-sectional view showing a fourth modification of the valve body, and FIG. 11 is a perspective view showing the valve body of FIG. 10 taken out. 10... Extracorporeal circulation/circuit, 11.12... Tube, 13... Connector with valve body, 13A... Channel, 13B...
・Opening, 13C... Opening, 13D, 13E... Opening end, 14... Detector, 15, 40, 50.60.71
. 72...Valve body, 17,41.51.61...First notch, 18,42.52.62...Second notch, 19...Intersection, 41A, 41B, 42A. 42B, 51A, 51B, 51C, 52A. 52B, 52C...notches, 63.64...end faces. Patent Applicant: Chill 7 Co., Ltd. Representative, Sakaijin Patent Attorney: Osamu Shiokawa Figure 7 Figure 10 Figure 11 Figure 1

Claims (1)

[Claims] fl) A tube having at least two open ends connected to open ends of the tube, the open ends having flow passages communicating with each other, and a passage communicating with the flow passages. a connector main body having a connector body, a valve body provided to insert a rod-like body into the passage in a tight state and close the passage when the rod-like body is not inserted; A connecting tool with a valve body, characterized in that it is provided with a guiding part for guiding. (2) The guide portion of the valve body includes a first notch that opens only on one end surface of the valve body, and a second notch that opens only on the other end surface, and the first notch and the second notch open only on the other end surface. A connector with a valve body according to claim 1, wherein the two notches intersect within the connector. (3) A connector with a valve body according to claim 1 or 2, wherein the valve body is made of a soft and elastic material. (4) The first cut consists of a plurality of cuts that intersect with each other, and the second cut consists of a plurality of cuts that intersect with each other, and the first cut and the second cut
A connector with a valve body according to any one of claims 1 to 3, wherein the notches intersect at a single position inside the valve body. (5) The first incision consists of a plurality of incisions that do not intersect with each other, the second incision consists of a plurality of incisions that do not intersect with each other, and the first incision and the second incision are A connecting tool with a valve body according to any one of claims 1 to 3, which intersects several bales of water inside the valve body. (6) A connector with a valve body according to any one of claims 1 to 5, wherein the end surface of the valve body is convex.