JP3123054U - Breathing circuit connector - Google Patents

Abstract

To provide a breathing circuit connector for preventing a medical accident of a subsequent patient by detecting a decrease in pressure in the breathing circuit with a low-pressure monitor of a ventilator.
A breathing circuit connector (1) in which a hole (6) through which a lumen of a cylinder part (2) can communicate with the outside is formed in a substantially middle part or a substantially lower part of a cylinder part (2). Engagement that extends toward the center of the cylinder part (2) or the inner cylinder part (32) on the upper part of the cylinder part (2) or the inner cylinder part (32) made of a hard or semi-rigid material having rebound resilience Portion 5 was provided.
[Selection] Figure 1

Description

  The present invention is an improvement of a breathing circuit connector (hereinafter sometimes simply referred to as a “connector”) used between a line tube connected to a ventilator and a vent tube inserted into a patient's trachea. It is about.

  When the patient's respiratory function stops or declines, the ventilator substitutes or assists the patient's ventilation. The ventilator has a low ventilation monitor (monitors the amount of air flowing through the breathing circuit) in order to respond to medical accidents caused by the connector tube and vent tube connection adapter being removed during the ventilator. Alternatively, a low-pressure monitor (monitors the pressure in the breathing circuit) is provided. When the connector cylinder and vent pipe connection adapter are removed, the former gives an alarm based on the change in ventilation volume, and the latter gives an alarm based on the pressure drop.

  However, when the cylindrical portion of the connector and the vent pipe connection adapter are removed, the opening portion of the cylindrical portion itself may be blocked by the patient's clothes. At this time, the load of the ventilator pump required for ventilation through the patient's clothes, etc. is not different from the load when connected to the patient's lungs. Both alarms may not function properly. If this happens, a medical accident will occur in which the patient falls into a serious situation.

In Patent Document 1, as a connector used for a line tube connecting a ventilator and a patient, a cannula 2 (corresponding to the vent pipe connection adapter 8 and the vent pipe 13 of the present invention) to be inserted into a patient's pipe and a connector 3 ( The breathing circuit connector 1 of the present invention and the branch pipe 14 are connected), and the connector tube 5 is connected to a line tube connected to the ventilator.
Patent Document 2 discloses a connector in which a tubular duct 10 (corresponding to a part of the vent pipe connection adapter 8 of the present invention) is attached to the coupling element 10c (corresponding to the cylindrical portion 2 and the branch pipe 14 of the present invention). Has been.
In Patent Documents 1 and 2, when the connector 3 or the tubular duct 10 is removed, the opening of the connector 3 or the tubular duct 10 may be blocked by the clothes of the patient. Happens.
JP 2002-177378 A (see FIGS. 1 and 2) Japanese translation of PCT publication No. 2005-510282 (see FIGS. 1 and 2)

  The problem to be solved by the present invention is that, when using a ventilator, the connector cylinder, vent tube connection adapter, and connector are removed, and the patient's clothes are stuck on the opening of the cylinder. The existing alarm system does not function properly.

Therefore, as a result of intensive studies to solve the above problems, the present inventor has reached the following idea.
[1] The present invention provides a breathing circuit connector (1) in which a hole (6) through which the inner cavity of the cylinder part (2) can communicate with the outside is formed in a substantially middle or lower part of the cylinder part (2). To do.
[2] The present invention forms the outer cylinder part (33) by opening a gap (38) from the substantially central part of the inner cylinder part (32) to the outer periphery of the substantially lower part,
An inner hole (36) and an outer hole (37) are formed in the substantially middle or substantially lower part of the inner cylinder part (32) and the outer cylinder part (33), respectively.
Provided is a breathing circuit connector (31) formed so that the lumen of the inner cylinder part (32) can communicate with the outside through the inner hole (36), the gap (38) and the outer hole (37).
[3] In the present invention, the center of the cylindrical portion (2) or the inner cylindrical portion (32) is formed on the upper portion of the cylindrical portion (2) or the inner cylindrical portion (32) having rebound resilience and made of a hard or semi-rigid material. A breathing circuit connector (1, 31) according to [1] or [2], wherein an engaging portion 5 extending in the direction is provided.
[4] The present invention attaches the vent pipe connection adapter (8) to the lower part of the cylinder part (2) or the inner cylinder part (32) according to any one of [1] to [3],
The vent pipe connection adapter (8) is formed with a cylindrical connector connection portion (9) on the upper side, a flange portion (10) protruding from a substantially middle portion, and an inner portion of the connector connection portion (9) on the lower side. Forming a tubular vent pipe connection (12) in communication with the cavity;
When the inner peripheral wall of the cylindrical portion (2) or the inner cylindrical portion (32) and the outer peripheral wall of the connector connecting portion (9) of the vent pipe connecting adapter (8) are fitted,
The hole (6) of the cylinder part (2) or the inner hole (36) of the inner cylinder part (32) is connected to the breathing circuit connector (1, 31) blocked by the outer peripheral wall of the connector connection part (9). provide.
[5] In the present invention, a branch pipe (14) is mounted on the upper part of the cylinder part (2) or the inner cylinder part (32) according to any one of [1] to [4], and the branch pipe (14 ) Is formed on the side of the tube, and an upper protrusion (16) and a lower protrusion (17) are formed below the branch pipe (14). The breathing circuit according to any one of [1] to [4], wherein an engagement groove (15) that engages with the engagement portion (5, 35) of the portion (2) or the inner cylinder portion (32) is formed. Connectors (1, 31) are provided.

  In the breathing circuit connectors 1 and 31 of the present invention, a hole 6 through which the lumen of the cylindrical portion 2 can communicate with the outside is formed in a substantially middle or abdomen of the cylindrical portion 2, or from a substantially central portion of the inner cylindrical portion 32. An outer cylinder part 33 is formed by opening a gap 38 in the outer periphery of the substantially lower part, and an inner hole 36 and an outer hole 37 are formed in the inner cylinder part 32 and the substantially middle part or substantially lower part of the outer cylinder part 33, respectively. Since the lumen of the inner cylinder portion 32 is formed so as to be able to communicate with the outside through the inner hole 36, the gap 38 and the outer hole 37, the vent pipe connecting adapter 8 is connected to the breathing circuit connector 1 (31). Even when the opening of the breathing circuit connector 1 (31) is attached to the clothes of the patient 20 or the like, the air from the hole 6 (inner hole 36, outer hole 37) of the breathing circuit connector 1 (31) is removed. Leaks to the outside. For this reason, since the pressure drop in the breathing circuit can be detected by the low-pressure monitor of the ventilator, it is possible to prevent a subsequent medical accident of the patient.

  1 is a cross-sectional view of the tube portion 2 of the breathing circuit connector 1 and the vent pipe connection adapter 8 of the present invention. FIG. 2 is a cross-sectional view of the tube portion 2 of FIG. 1A is a cross-sectional view taken along line YY in FIG. 1, FIG. 4B is a cross-sectional view illustrating another embodiment of FIG. 3A, FIG. 4 is a cross-sectional view taken along line XX in FIG. FIG. 6 is a cross-sectional view of a state where the branch pipe 14 is connected to the cylindrical portion 2, FIG. 6 is a cross-sectional view of the inner cylindrical portion 32 / outer cylindrical portion 33 of the breathing circuit connector 31 and the vent pipe connecting adapter 8 of the present invention, and FIG. 6 is a cross-sectional view of a state in which the inner tube portion 32 / outer tube portion 33 and the vent pipe connecting adapter 8 are connected, FIG. 8A is a cross-sectional view taken along line Y′-Y ′ of FIG. 6, and FIG. 9) is a sectional view showing another embodiment of the present invention, FIG. 9 is a view showing the state of use of the breathing circuit connector 1 (31) of the present invention, and (a) is a cylindrical portion 2 (inner cylindrical portion 32) and a vent pipe connecting adapter 8 Is normal (B) is a state in which the cylindrical portion 2 (inner cylindrical portion 32) and the vent pipe connecting adapter 8 are removed.

[Breathing circuit connectors 1, 31]
As illustrated in FIGS. 1 to 2, the breathing circuit connector 1 has a hole 6 through which the inner cavity of the tube portion 2 can communicate with the outside in a substantially middle or substantially lower portion of the tube portion 2.
As illustrated in FIG. 5 to FIG. 7, the breathing circuit connector 31 forms an outer cylinder portion 33 with a gap 38 formed between a substantially central portion of the inner cylinder portion 32 and a substantially lower outer periphery. An inner hole 36 and an outer hole 37 are formed in a substantially middle part or a substantially lower part of the inner cylinder part 32 and the outer cylinder part 33, respectively, and the inner cavity of the inner cylinder part 32 passes through the inner hole 36, the gap 38 and the outer hole 37. To communicate with the outside.
The cylinder part 2 or the inner cylinder part 32 has rebound resilience, is made of a hard or semi-rigid material, and is provided with engaging parts 5 and 35 extending upward into the cylinder.
Further, as illustrated in FIG. 4, an annular rib 4 (34) in which convex portions 4A, (34A) and a concave portion 4B (34B) are formed on the outer periphery of the substantially central portion from the substantially upper portion of the cylindrical portion 2 (inner cylindrical portion 32). May be formed. The rib 4 (34) prevents slipping when the breathing circuit connector 1 (31) and the vent pipe connection adapter 8 (38) are attached / detached, and makes the attachment / detachment smoother.

[Hole 6, Inner Hole 36, Outer Hole 37]
The hole 6 may have any shape and size as long as the lumen of the cylindrical portion 2 can communicate with the outside (air can pass through).
The inner hole 36 and the outer hole 37 may have any shape and size as long as the inner cavity of the inner cylinder portion 32 can communicate with the outside (air can pass through) the gap 38 and the outer cylinder portion 33.
A plurality of holes 6 are preferably formed, and at least four holes are preferably formed at a predetermined interval as illustrated in FIG. 3A and a maximum of eight holes as illustrated in FIG. 3B. It is preferable that a plurality of inner holes 36 and outer holes 37 are also formed. At least four holes are formed at predetermined intervals as illustrated in FIG. 8A, and a maximum of eight holes are formed as illustrated in FIG. 8B. Is preferred.

[Vent pipe connection adapter 8]
As shown in FIG. 1, the breathing circuit connector 1 (31) has a vent pipe connecting adapter 8 attached to the lower part of the cylinder part 2 (inner cylinder part 32).
The vent pipe connection adapter 8 is formed with a cylindrical connector connection portion 9 on the upper side, a flange portion 10 projecting substantially at the center, and a cylindrical vent pipe connection portion communicating with the lumen of the connector connection portion 9 on the lower side. 12 is formed. The inner peripheral wall of the cylindrical portion 2 (inner cylindrical portion 32) of the breathing circuit connector 1 (31) and the outer peripheral wall of the connector connecting portion 9 of the vent pipe connecting adapter 8 are fitted. The breathing circuit connector 1 (31) and the vent pipe connection adapter 8 can be attached and detached more smoothly by grasping the heel part 10 of the vent pipe connection adapter 8 by hand and pushing or pulling. When the breathing circuit connector 1 (31) and the vent pipe connection adapter 8 are fitted, the hole 6 of the cylinder part 2 (the inner hole 36 of the inner cylinder part 32) is blocked by the outer peripheral wall of the connector connection part 9. It is peeling off.
[Branch pipe 14]
The upper part of the breathing circuit connector 1 (31) is connected to the branch pipe 14 as illustrated in FIG.
A line tube connecting pipe 18 is formed on the side of the branch pipe 14, and an upper protrusion 16 and a lower protrusion 17 are formed on the lower part of the branch pipe 14, and the cylindrical portion 2 or the inner cylindrical portion 32 is interposed therebetween. The engaging grooves 15 that engage with the engaging portions 5 and 35 are formed.
The engaging portion 5 of the cylindrical portion 2 (the same applies to the engaging portion 35 of the inner cylindrical portion 32) gets over the annular lower protrusion 17 formed on the outer peripheral wall of the lower portion of the branch pipe 14 as illustrated in FIG. It engages with an engagement groove 15 formed between the upper protrusion 16 and the lower protrusion 17 without going over the annular upper protrusion 16 having a diameter larger than that of the lower protrusion 17. At this time, the breathing circuit connector 1 (31) and the branch pipe 14 are freely rotated by the engaging portion 5 (35) along the engaging groove 15. Therefore, the vent pipe 13 connected to the vent pipe connecting adapter 8 is used. Can be prevented from twisting.

[Example of operation method]
The ventilation pipe connection adapter 8 is attached to the lower part of the breathing circuit connector 1 (31), and the branch pipe 14 is attached to the upper part of the cylinder part 2 (inner cylinder part 32).
As illustrated in FIG. 9A, the connection pipe 18 of the branch pipe 14 is connected to the line tube 19 connected to the ventilator (not shown), and the vent pipe connection adapter 8 is connected to the vent pipe 13. Then assemble the breathing circuit.
Air is introduced into the vent pipe 13 from the ventilator through the line tube 19, the branch pipe 14, the cylinder part 2 (inner cylinder part 32), and the vent pipe connection adapter 8. At this time, the hole 6 (inner hole 36) of the cylinder part 2 (inner cylinder part 32) of the breathing circuit connector 1 (31) is closed by the outer peripheral wall of the connector connection part 9 of the vent pipe connection adapter 8. Therefore, the air in the breathing circuit does not leak to the outside.
On the other hand, as illustrated in FIG. 9B, the vent pipe connection adapter 8 is removed from the cylindrical portion 2 (inner cylindrical portion 32), and the patient 20 receives the opening of the cylindrical portion 2 (inner cylindrical portion 32). Even when clothes or the like are stuck, the air in the breathing circuit [line tube 19, branch pipe 14, tube portion 2 (inner tube portion 32)] is retained in the hole 6 (inner hole of the tube portion 2 (inner tube portion 32)). 36, leakage from the outer hole 37) to the outside. For this reason, the low-pressure monitor of the ventilator can sense the pressure in the breathing circuit [line tube 19, branch pipe 14, tube portion 2 (inner tube portion 32)] and notify it by an alarm or the like.

Sectional drawing of the cylinder part 2 of the connector 1 for breathing circuits of this invention, and the vent pipe connection adapter 8 Sectional drawing of the state which connected the cylinder part 2 and the vent pipe connection adapter 8 of FIG. (A) YY sectional view of FIG. 1, (b) Cross sectional view showing another embodiment of FIG. 3 (a) XX sectional view of FIG. Sectional drawing of the state which connected the branch pipe 14 to the cylinder part 2 of FIG. Sectional drawing of the inner cylinder part 32 / outer cylinder part 33 of the breathing circuit connector 31 and the vent pipe connection adapter 8 Sectional drawing of the state which connected the inner cylinder part 32, the outer cylinder part 33, and the vent pipe connection adapter 8 of FIG. (A) Y'-Y 'sectional drawing of FIG. 6, (b) Sectional drawing which shows the other Example of Fig.8 (a). FIG. 2 is a view showing the state of use of the breathing circuit connector 1 (31) of the present invention; (a) a state in which the tube portion 2 (inner tube portion 32) and the vent pipe connection adapter 8 are normally connected; Inner cylinder part 32) and vent pipe connection adapter 8 removed

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 31 Respiratory circuit connector 2 Cylinder part 4, 34 Rib 4A, 34A Convex part 4B, 34B Concave part 5, 35 Engagement part 6 Hole 8 Vent pipe connection adapter 9 Connector connection part 10 Hook part 12 Vent pipe connection part 13 Trachea 14 Branch pipe 15 Engaging groove 16 Upper protrusion 17 Lower protrusion 18 Line tube connection pipe 19 Line tube 20 Patient 32 Inner cylinder part 33 Outer cylinder part 36 Inner hole 37 Outer hole 38 Gap

Claims (5)

  A breathing circuit connector (1), characterized in that a hole (6) through which the lumen of the tube portion (2) communicates with the outside is formed in a substantially middle or substantially lower portion of the tube portion (2). A gap (38) is formed in the outer periphery of the substantially lower part from the substantially central part of the inner cylinder part (32) to form the outer cylinder part (33),
An inner hole (36) and an outer hole (37) are formed in the substantially middle or substantially lower part of the inner cylinder part (32) and the outer cylinder part (33), respectively.
Respiratory circuit connector (31), characterized in that the inner cylinder portion (32) has a lumen that communicates with the outside through the inner hole (36), gap (38), and outer hole (37). ).   Engagement that extends toward the center of the cylinder part (2) or the inner cylinder part (32) on the upper part of the cylinder part (2) or the inner cylinder part (32) made of a hard or semi-rigid material having rebound resilience The breathing circuit connector (1, 31) according to claim 1 or 2, wherein the portion 5 is protruded. A vent pipe connection adapter (8) is attached to the lower part of the cylindrical part (2) or the inner cylindrical part (32) according to any one of claims 1 to 3,
The vent pipe connection adapter (8) is formed with a cylindrical connector connection portion (9) on the upper side, a flange portion (10) protruding from a substantially middle portion, and an inner portion of the connector connection portion (9) on the lower side. Forming a tubular vent pipe connection (12) in communication with the cavity;
When the inner peripheral wall of the cylindrical portion (2) or the inner cylindrical portion (32) and the outer peripheral wall of the connector connecting portion (9) of the vent pipe connecting adapter (8) are fitted,
A breathing circuit connector (1, 31) in which the hole (6) of the cylindrical portion (2) or the inner hole (36) of the inner cylindrical portion (32) is closed by the outer peripheral wall of the connector connecting portion (9).   A branch pipe (14) is mounted on the upper part of the cylinder part (2) or the inner cylinder part (32) according to any one of claims 1 to 4, and a side part of the branch pipe (14). A line tube connecting pipe (18) is formed on the lower pipe, and an upper protrusion (16) and a lower protrusion (17) are formed below the branch pipe (14). Or the connector for respiratory circuits of any one of Claim 1 to 4 which formed the engaging groove (15) engaged with the engaging part (5, 35) of an inner cylinder part (32). 1, 31).

Images