JP3231085U7 - - Google Patents

Description

This idea relates to a medical connector, and more specifically, it is connected to a nutrient injection line such as a gastrostomy catheter tube, and when the nutrient is injected, the nutrient remains at the connection part with the connector or the like, or is connected. It is related to a connector that can prevent leakage from the part and can insert a transgastric fistula endoscope.

In recent years, many medical accidents have occurred due to misconnection on the bedside of medical connectors (for example, enteral nutritional supplements are misconnected to the infusion drip line and administered), and as a countermeasure, misconnection prevention connectors have occurred. International standardization (ISO standard 80369-3) is underway.

By the way, the applicant can use the utility model registration No. 3221614 (Patent Document 1) as a medical connector into which a transgastric fistula endoscope can be inserted first, even when injecting a highly viscous nutritional supplement. We have proposed Utility Model Registration No. 3222455 (Patent Document 2) as a syringe capable of reducing injection resistance.

When the nutrient was actually injected using the syringe described in Patent Document 2, as shown in FIG. 9, the screw 01a provided around the nutrient injection port 01b of the syringe 01 was attached to the luer lock of the connector 02. When the nutrient is connected to the portion 02b, the nutrient is injected from the syringe and discharged from the tip of the connector body 02a, the problem that the nutrient remains in the gap 03 formed between the connector body 02a and the seal member 02c occurs. did.

When the cause of this problem was investigated, when the seal member 02c was compressed by the nutrient injection port 01b due to the connection of the luer lock portion 02b, it was expanded in the outer peripheral direction and deformed unevenly toward the luer lock portion, resulting in the result. As shown in the figure, a gap 03 was formed on the inner peripheral side, and the nutrient entered into this gap, so that the nutrient remained in the gap 03 between the connector main body 02a and the seal member 02c. Further, if the nutrient is further injected in this state, there is a problem that the nutrient leaks from the gap between the connector body and the luer lock portion.

Utility Model Registration No. 3221614 Utility Model Registration No. 322245

Therefore, this device solves the above-mentioned conventional problem, and when the nutrient is injected, the sealing member functions reliably, and the nutrient remains at the connection part with the connector or the like, and the leakage from the connection part is prevented. It is intended to provide a medical connector that can be used.

In order to solve the above problems, the device according to claim 1 is a connector main body portion, a luer lock portion attached to the connector main body portion, and an annular seal member sandwiched and arranged by both portions. The connector main body portion has a lumen having both ends open in the axial direction, and the inner surface of the lumen is formed as a smooth surface without any throttle, and the seal member is formed in the axial direction. An annular tip convex portion is formed on one of the facing side surfaces, and a sealing member disposing portion is formed in an annular shape on the one end surface of the connector main body facing the tip convex portion in the axial direction. In a medical connector in which an annular concave portion to which the tip convex portion is inserted and mounted is formed in the seal member arrangement portion, the inner peripheral surface thereof faces the outer peripheral side of the seal member arrangement portion in the axial direction. Is integrally provided so as to surround the seal member arrangement portion with a seal member deformation suppressing portion that is in contact with the seal member arranged in the seal member arrangement portion and suppresses the deformation of the seal member, and is sealed by the lure lock portion. When the member is pushed into the lumen side of the connector body, the gap formed between the syringe or connector connected to the connector body and the connector body is filled so that it does not protrude into the cavity. and said that you are.

The invention according to claim 2 is the invention according to claim 1, wherein the connector main body portion has an inner diameter of 5.0 mm, and the seal member arrangement portion has an outer diameter of 11.5 mm. The seal member deformation suppressing portion is formed to have an axial length of 0.9 mm, the seal member is formed of a material having a shore hardness of 70 A, and an inner diameter 6 larger than the inner diameter of the connector main body portion is at the center thereof. A hole of 0.0 mm is formed, an outer diameter is formed to 12.0 mm, and a thickness is formed to 1.5 mm.

The invention according to claim 3 is a connector connected to the medical connector according to claim 1, comprising a main body having a lumen with both ends open in the axial direction, and the inner diameter of the lumen of the main body is large. It is formed larger than the inner diameter of the connector conforming to the international standard ISO80369-3.

The device according to claim 4 is an assembly of a medical connector including the medical connector according to claim 1 and the medical connector according to claim 3.

The device according to claim 5 is a medical connector having the following configuration. That is, in the medical connector according to claim 3, one end side in the axial direction is connected to the adapter on the side of the endoscope insertion assisting tool, and the other end side is connected to the medical connector according to claim 1. The medical connector according to claim 1 has one end side in the axial direction connected to the other end side of the medical connector according to claim 3 and the other end side connected to a gastrostomy catheter tube.

This device is as described above, and according to the device according to claim 1, the seal is oriented toward the outer peripheral side of the seal member arrangement portion in the axial direction and its inner peripheral surface is arranged in the seal member arrangement portion. A seal member deformation restraining portion that comes into contact with the member and suppresses deformation of the seal member is integrally provided so as to surround the seal member disposing portion, and the seal member is pushed into the lumen side of the connector main body by the luer lock portion. When this is done, the gap formed between the syringe or connector connected to the connector body and the connector body is filled so that it does not protrude into the cavity, preventing uneven deformation of the seal member. It becomes possible to do. Therefore, a gap is generated between the connector and the connector, etc. like the conventional connector, and when injecting the nutrient due to this, the nutrient remains at the connection between the connector and the connector, etc. , The excellent effect that the nutritional supplement does not leak from the connection part can be expected.

According to the invention according to claim 2, the connector main body portion has an inner diameter of 5.0 mm, and the seal member arrangement portion has an outer diameter of 11.5 mm. The deformation restraining portion is formed to have an axial length of 0.9 mm, the sealing member is formed of a material having a shore hardness of 70 A, and the inner diameter of the seal member is 6.0 mm, which is larger than the inner diameter of the connector main body. Since the holes are formed, the outer diameter is formed to 12.0 mm, and the thickness is formed to 1.5 mm, the effect of the device according to claim 1 is empirically shown in the examples. It has a supporting effect.

According to the third aspect of the present invention, the connector connected to the medical connector according to the first aspect includes a main body having a lumen with both ends open in the axial direction, and the lumen of the main body is provided. Since the inner diameter is formed larger than the inner diameter of the connector conforming to the international standard ISO80369-3, it is possible to insert a transgastric fistula endoscope, which was not possible with conventional connectors, and it can be used for nutritional supplement injection lines. You can also connect.

According to the device according to claim 4 or 5, the medical connector according to claim 1 and the medical connector according to claim 3 can be organically coupled.

It is a schematic front view which shows the whole of the auxiliary tool for inserting an endoscope. It is a partial view which shows the state before assembly as above. It is an enlarged sectional view of the adapter part of FIG. A connector mounted on the adapter portion is shown, (A) is a front view, (B) is a plan view, (C) is a bottom view, and (D) is a side view. The same connector is shown, (A) is an enlarged sectional view of the connector, and (B) is an enlarged sectional view of an international standard connector. It is sectional drawing which shows the connector on the gastrostomy catheter tube side connected to the same connector in the attached state. It is an exploded sectional view of the connector on the gastrostomy catheter tube side. It is a partial view showing the state before assembling by connecting the connector on the gastrostomy catheter tube side to the nutrient injection tube. It is an enlarged sectional view of the tip part which shows the state which attached the connector to the syringe of the prior art (Patent Document 2).

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 is an endoscope insertion assisting tool. The endoscope insertion assisting tool 1 includes an air supply tube 3 having an endoscope insertion adapter 2. The air supply tube 3 is for inflating the inside of the stomach with air to improve the field of view of the endoscope. Reference numeral 5 denotes a gastrostomy catheter tube connected to the adapter 2 of the air supply tube 3. A balloon 6 is attached near the tip opening thereof, and a stopper that abuts on the abdominal wall on the posterior end side of the balloon. 7 is provided.

As shown in FIGS. 2 and 3, a connector 8 is attached to the rear end opening of the gastrostomy catheter tube 5. On the other hand, the connector 10 connected to the connector 8 is attached to the lower end opening of the adapter 2 which is a connector compliant with the international standard ISO80369-3 of the misconnection prevention connector. The connector 10 is a double male connector.

The connector 10 has a main body 10b having a lumen 10a with both ends open in the axial direction, as shown in FIGS. 3 and 4. An annular flange portion 10c is provided at an intermediate position in the length direction on the outer peripheral surface of the main body 10b, and a protrusion having a plurality of annular stepped portions whose diameter gradually decreases toward the upper end on the outer peripheral surface above the flange portion. The strip portion 10d is formed, and the luer lock portion 10e is formed at the lower end portion of the outer peripheral surface below the flange portion 10c. The ridge portion 10d is for making the connection tight when connecting to the adapter 2. Further, the luer lock portion 10e can be locked with the luer lock portion provided on the connector 8.

As shown in FIG. 5A, the inner diameter r of the lumen 10a of the connector 10 is set to 5.00 mm so that a transgastric fistula endoscope can be inserted through the lumen 10a. That is, the inner diameter r is formed to be larger than the inner diameter 2.9 mm of the lumen of the connector (adapter) conforming to ISO80369-3. On the other hand, the outer diameter R of the main body 10b other than the luer lock portion 10e and the flange portion 10c must be connected to a nutrient injection line or the like and used, and is therefore set to 8.10 mm. That is, the outer diameter R is sized according to ISO80369-3 so that it can be connected to the injection line of nutritional supplements, while the inner diameter r is compliant with ISO80369-3 to insert a transgastric fistula endoscope. It has its own size. In contrast to this connector 10, the conventional connector 10'conforming to ISO80369-3 shown in FIG. 5B has a throttle on the inner surface of the lumen of the main body, so that the inner diameter r'is 2. It is 9 mm. Therefore, it is designed so that a transgastric fistula endoscope with a maximum outer diameter of 3.05 mm cannot be inserted. In this example, the inner diameter r of the lumen 10a of the connector 10 is 5.00 mm, but the present invention is not limited to this, and any value in the range of 3.06 mm to 5.8 mm can be used. ..

As is clear from FIG. 5A, the inner surface of the lumen 10a of the main body 10b of the connector 10 is formed as a smooth surface without any throttle as in the conventional connector 10'. Therefore, as in the prior art, the transgastric fistula endoscope inserted here can pass smoothly without any buffering. Therefore, the insertion can be performed smoothly and quickly.

FIG. 6 shows the configuration of the connector 8 attached to the rear end opening of the gastrostomy catheter tube 5 and the attached state thereof. The connector 8 is a male-female connector. The connector 8 includes a connector main body portion 12, a luer lock portion 13 attached to the connector main body portion, and an annular seal member 14 sandwiched and arranged by both portions. The seal member 14 is made of, for example, elastic rubber, and has an annular tip convex portion 15 on one side surface in the axial direction as shown in FIG. 7. Further, the shore hardness of the seal member 14 is set to 70 A. Previously, 50A and 60A were used, but they were too soft and the connectors sometimes came into contact with each other before compression sealing. Therefore, when the thickness of the seal member was increased, the luer lock portion did not fit well this time. Further, when it was set to 80A, it became too hard this time, and the rotation operation of the connector became hard, and the operability deteriorated. Therefore, when the thickness of the seal member was reduced, the seal member was idle in the connector, causing misalignment. Under these circumstances, the one with a hardness of 70A is the best and is adopted.

Further, the seal member 14 has an inner diameter rb of the center hole 17 larger than the inner diameter ra of the connector main body 12 and is formed to be 6.0 mm. Therefore, even if it is sandwiched by the luer lock portion 13 after being attached to the connector main body portion 12 and deformed, it does not protrude in a certain direction of the lumen 18.

The inner diameter ra of the lumen 18 of the connector main body 12 is not compliant with ISO80369-3 and has a unique size for inserting a transgastric fistula endoscope. In this example, 5.00 mm is the same as the inner diameter of the lumen 10a of the connector 10 of 5.00 mm. Although the lumen of the connector main body 12 seems to have the same diameter in the drawing, it is actually formed in a tapered shape so that the lumen expands toward the end. Therefore, there is an advantage that the inner diameter of the lumen at the end thereof is about 5.69 mm, and the sliding contact with a connector or the like conforming to the international standard ISO80369-3 can be ensured.

Further, a seal member disposing portion 19 is formed in an annular shape on the end surface of the connector body 12 on the luer lock portion 13 side. That is, the seal member disposing portion 19 has a shape that is concave to a predetermined depth from the end face in combination with the seal member deformation suppressing portion 20 described later. The annular recess 16 described above is provided on the surface of the seal member disposing portion 19 facing the axial direction. The convex portion 15 at the tip of the sealing member 14 is inserted into the annular recess 16 and mounted. Therefore, once mounted, the convex portion 15 and the concave portion 16 fit tightly to each other, and the seal member 14 can maintain a stable mounting state without lateral displacement. After the seal member 14 is attached, in order to attach the luer lock portion 13 to the connector main body portion 12, the luer lock portion 13 is pushed toward the connector main body portion 12, and the annular ridge provided at the tip thereof is attached to the connector main body portion 12. I will press it into the annular recess provided in. At the same time, it is locked by the luer lock part.

Reference numeral 20 denotes a seal member deformation suppressing portion, which is integrally provided so as to face the outer peripheral side of the seal member arrangement portion 19 in the axial direction and its inner peripheral surface is in contact with the seal member 14 and surrounds the seal member arrangement portion 19. There is. The seal member deformation suppressing portion 20 is in contact with the seal member 14 arranged in the seal member disposing portion 19 on the inner peripheral surface as described above, and when the seal member is compressed and deformed by the luer lock portion 13, the luer lock is performed. It has a function to prevent the deformation from being biased toward the part. The outer diameter Rb of the seal member arrangement portion 19 is set to 11.5 mm, which is somewhat smaller than the outer diameter Ra of the seal member 14 of 12.0 mm. Further, the height (length in the axial direction) h of the seal member deformation suppressing portion 20 is set to 0.9 mm, which is somewhat thinner than the thickness t of the seal portion. Therefore, the surface of the seal member 14 is slightly protruded from the end surface of the connector main body portion 12 before the luer lock portion 13 is attached.

By setting the dimensional difference as described above for each part, the seal member 14 is pushed into the connector 8 at the tip of the luer lock portion 10e of the connector 10 as shown in FIG. 6, and when the seal member 14 is compressed and deformed, the seal is sealed. Even if the contact side 0.6 mm of the member 14 with the luer lock portion 10e is pressed toward the luer lock portion 13 and the remaining 0.9 mm is pressed against the lumen side of the connector main body portion 12, the seal member 14 is pressed. Does not protrude to the lumen 18 side. Therefore, a gap does not occur between the connector main body 12 and the seal member 14 as in the past, and the injected nutrient does not remain or enter. Moreover, since the adhesion between the annular tip convex portion 15 of the seal member 14 and the annular concave portion 16 of the connector main body portion 12 can be further improved, high sealing performance can be maintained.

As for the connector 8 as described above, one end side of the connector main body 12 is attached to the gastrostomy catheter tube 5 as shown in FIG. 6, but the other end side of the luer lock portion 13 is connected to the connector 10. That is, the luer lock portion 10e of the connector 10 is engaged with the luer lock 13 of the connector 8 to be locked, and at that time, the seal member 14 is pushed by the tip of the luer lock portion 10e of the connector 10. Although the seal member 14 is compressed by this pushing operation, it does not protrude toward the lumen 18. Therefore, as shown in FIG. 8, the sealing member 14 prevents the nutrient from leaking from the joint even when the adapter 2 is connected to the tube 21 of the nutrient injection line instead of the endoscope insertion adapter 2. Can be done.

In FIG. 8, 25 is a cap for the connector 8, and when the connector 8 is not connected anywhere, it is connected to the neck of the connector 8 by a connecting piece 26, and has the same shape as the lower half of the connector 10. The luer lock portion 27 provided at the lower end thereof is inserted into the luer lock portion 13 of the connector 8 to lock the connector 8. On the other hand, when connecting to the tube 21 of the nutrient injection line as described above, after the cap 25 is removed, the luer lock portion 10e of the connector 10 provided at the lower end of the tube is used as the luer lock portion of the connector 8. Plug it into 13 and lock it to connect. In this way, the connector 8 can be selectively connected to the endoscope insertion adapter 2 and the tube 21 of the nutrient injection line.

The assembly of the endoscope insertion assisting tool 1 will be described. In order to connect the endoscope insertion assisting tool 1 and the gastrostomy catheter tube 5, first, the connector 8 in which the seal member 14 and the luer lock portion 13 are previously attached to the connector main body 12 is attached to the connector 8 after the gastrostomy catheter tube 5. Insert it into the end opening and attach it. After that, in the same manner, the connector 10 attached to the lower end opening of the adapter 2 of the endoscope insertion assisting tool 1 is inserted toward the connector 8 (this state is shown in FIG. 2), and the luer lock is performed. The portion 10e is locked to the luer lock portion 13. When this insertion and locking is completed, it will be in the assembled state (Fig. 6).

At the time of use, as shown in FIG. 1, the gastrostomy catheter tube 5 is inserted into the gastrostomy from the tip side where the balloon 6 is located, through the abdominal wall and the stomach wall, and the tip portion including the balloon 6 is inserted. After insertion, the balloon 6 is inflated, and the stopper 7 is brought into contact with the abdominal wall and fixed so as to sandwich both walls with the balloon 6. After confirming that it has been fixed, attach the assistive device 1 and insert the transgastric fistula endoscope from the adapter 2 into the stomach. At this time, it is possible to clarify the field of view with the endoscope by inflating the stomach by sending air into the stomach with a syringe or the like connected to the air supply tube 3. When inserting this transgastric fistula endoscope, the inner diameter r of the lumen 10a of the connector 10 through which the endoscope passes is set to 5.00 mm, and the inner diameter ra of the lumen 18 of the connector 8 is set to 5.00 mm. , You can pass here without any hindrance to the passage.

Moreover, since the outer diameter R of the main body 10b other than the luer lock portion 10e and the flange portion 10c of the connector 10 does not conform to ISO80369-3, this connector 10 is used for the connector of the nutrient injection tube 21 as shown in FIG. It can be effectively connected to the gastrostomy catheter tube 5 without interfering with the connection.

After inserting the transgastric fistula endoscope into the gastric fistula as described above and confirming that the gastrostomy catheter tube 5 is correctly inserted into the stomach, the transgastric fistula endoscope is pulled out and replaced with the adapter 2. As shown in FIG. 8, the connector 10 attached to the nutrient injection tube 21 is reconnected to the connector 8 attached to the gastrostomy catheter tube 5, and the nutrient is injected.

When the nutrient is injected, the sealing member 14 is made of elastic rubber having a hardness of 70 A, so that the nutrient remains at the connection portion between the connector 8 and the connector 10, or the nutrient leaks from the connection portion. There is no. Therefore, unlike the conventional case, the nutrient does not remain in the gap and leaks from the gap, so that smooth injection of the nutrient can be ensured. In addition, a transgastric fistula endoscope can be inserted. This applies not only to the connector 8 and the connector 10, but also to the connector 8 and the syringe, and high sealing performance can be obtained by the sealing member 14.

As described above, by using the connector 10 and the connector 8 of this embodiment, it is possible to insert a transgastric fistula endoscope into a gastrostomy, which is not possible with a conventional connector compliant with ISO80369-3. , Can be useful in the current medical field. Therefore, it can be expected to have an excellent effect of being able to provide a product having extremely high utility value in this technical field.

As described above, the connector 10 is used by being attached to the lower end opening of the adapter 2 provided in the air supply tube 3 of the endoscope insertion assisting tool 1 when the endoscope is inserted, and also for administration of nutritional supplements. Is used by being attached to the rear end opening of the enteral nutritional supplement injection tube 21, and the attachment site is different. In either case, the tube is connected to the connector 8 of the gastrostomy catheter tube 5.

It goes without saying that the connector 10 and the connector 8 shown in this embodiment are merely preferred examples, and the specific shape, structure, and the like can be appropriately redesigned within the scope of the claims. No.

1 Endoscope insertion aid 2 Endoscope insertion adapter 3 Air supply tube 5 Gastrostomy catheter tube 6 Balloon 7 Stopper 8 Connector 10 Connector 10a Lumen 10b Main body 10c Flange part 10d Luer lock part 12 Connector Main body 13 Luer lock 14 Ring seal member 15 Ring tip convex 16 Circular recess 17 Center hole 18 Lumen 19 Seal member arrangement 20 Seal member deformation restraint 21 Nutrient injection tube

Claims (5)

It includes a connector main body, a luer lock part attached to the connector main body, and an annular sealing member sandwiched and arranged by both parts.
The connector main body has a lumen with both ends open in the axial direction, and the inner surface of the lumen is formed as a smooth surface without any throttle.
An annular tip convex portion is formed on one side surface of the seal member facing the axial direction, and a seal member is arranged on one end surface of the connector main body facing the tip convex portion facing the axial direction. In a medical connector in which a portion is formed in an annular shape, and an annular concave portion to which the tip convex portion is inserted and mounted is formed in the seal member arrangement portion.
The seal member deformation suppressing portion is arranged so that the seal member is oriented in the axial direction toward the outer peripheral side of the seal member arrangement portion and its inner peripheral surface is in contact with the seal member arranged in the seal member arrangement portion to suppress the deformation of the seal member. It is integrally provided so as to surround the portion, and is formed between the syringe or the connector connected to the connector main body and the connector main body when the seal member is pushed into the lumen side of the connector main body by the luer lock portion. A medical connector characterized in that it is configured so that the gap is filled and does not protrude into the lumen. The connector body has a lumen with an inner diameter of 5.0 mm.
The sealing member arrangement portion is formed to have an outer diameter of 11.5 mm.
The seal member deformation suppressing portion is formed to have an axial height of 0.9 mm.
The sealing member is formed of a material having a shore hardness of 70 A, and a hole having an inner diameter of 6.0 mm, which is larger than the inner diameter of the connector main body, is formed in the center thereof, and the outer diameter is formed to 12.0 mm. The medical connector according to claim 1, which is molded to a thickness of 1.5 mm. A connector connected to the medical connector according to claim 1, which comprises a main body having a lumen with both ends open in the axial direction, and the inner diameter of the lumen of the main body conforms to the international standard ISO80369-3. A medical connector characterized by being formed larger than the inner diameter of the connector. An assembly of a medical connector including the medical connector according to claim 1 and the medical connector according to claim 3. The medical connector according to claim 3, one end side in the axial direction is connected to the adapter on the side of the endoscope insertion assisting tool, and the other end side is connected to the medical connector according to claim 1. The medical connector according to No. 1 is an assembly of a medical connector having one end side in the axial direction connected to the other end side of the medical connector according to claim 3 and the other end side connected to a gastrostomy catheter tube.