Exhaust components and medical equipment

Abstract

To provide an exhaust member used in a medical device capable of being adjusted so as to produce an appropriate pressure in a negative-pressure part, and the medical device.SOLUTION: An exhaust member 4 is used in a medical device comprising a negative-pressure part. The exhaust member 4 comprises: a first opening part 4b capable of being connected to the negative-pressure part; a second opening part 4c capable of exhausting air from the inside to the outside at the time of contraction; and a compression part 4a constituted so as to be elastically recoverable, and allowing air to be repeatedly exhausted by the first opening part 4b and the second opening part 4c. A protrusion 4d is formed in an inner surface or an outer surface of the compression part 4a.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an exhaust member that is used in a medical instrument having a negative pressure section and is connected to the negative pressure section to exhaust air to the outside, and to a medical instrument having the exhaust member. [Background technology]

[0002] In order to suck and drain bodily fluids from the human body through a tube, a medical device equipped with a negative pressure section is used. Some such medical devices are equipped with an exhaust member (pump) that is an elastically restorable rubber sphere that creates negative pressure in the negative pressure section.

[0003] For example, Patent Document 1 discloses an invention relating to a medical instrument (referred to as a medical suction instrument in the same document) that includes an exhaust member (referred to as an exhaust means in the same document) and a balloon. Although Patent Document 1 does not provide detailed disclosure, conventional exhaust members (rubber bulbs) have generally been made of natural rubber in order to ensure elastic restoring force. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2006-102486 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, from the viewpoint of allergies of operators, etc., there was a demand for exhaust members (rubber bulbs) made of synthetic rubber such as isoprene rubber, rather than natural rubber. However, synthetic rubber such as isoprene rubber has a lower elasticity than natural rubber, and has a weak recovery force after the exhaust member is compressed and deformed. Therefore, when using an exhaust member made of synthetic rubber, it is not possible to suction the inside of the container to a high negative pressure. For this reason, it takes time to transition the inside of the negative pressure section to a predetermined negative pressure state.

[0006] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide an exhaust member for use in a medical instrument that can quickly adjust the pressure inside a negative pressure section to an appropriate level, and a medical instrument. [Means for solving the problem]

[0007] The exhaust member of the present invention is used in a medical instrument having a negative pressure portion, The device is provided with a first opening that can be connected to the negative pressure unit, a second opening that can exhaust air from the inside to the outside when contracted, and a compression unit that is configured to be elastically restored and can repeatedly exhaust the air through the first opening and the second opening, The compression section is characterized in that a protrusion is formed on the inner or outer surface thereof.

[0008] The medical instrument of the present invention is a medical instrument that aspirates drainage liquid by negative pressure generated in a negative pressure section, and is characterized by comprising the negative pressure section and the exhaust member. Effect of the Invention

[0009] The exhaust member and medical instrument of the present invention can quickly adjust the pressure inside the negative pressure section to an appropriate level. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a medical device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of the exhaust member according to the first embodiment, taken along line II-II in FIG. [Diagram 3] 1. FIG. 4 is a cross-sectional view of the exhaust member according to the second embodiment, taken along line II-II in FIG. [Figure 4] 1. FIG. 2 is a cross-sectional view of an exhaust member according to a third embodiment, taken along line II-II of FIG. [Diagram 5] 1. FIG. 2 is a cross-sectional view of the exhaust member according to the fourth embodiment, taken along line II-II of FIG. [Figure 6] 1. FIG. 1 is a cross-sectional view of an exhaust member according to a fifth embodiment, taken along line II-II of FIG. [Figure 7] FIG. 13 is a diagram showing a side surface of an exhaust member according to a sixth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an exhaust member and a medical instrument including an exhaust member of the present invention will be described with reference to the drawings. The embodiment described below is merely an example for facilitating understanding of the present invention, and is not intended to limit the present invention. In other words, the shapes, dimensions, arrangements, and other aspects of the components described below may be modified or improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof. In addition, in all the drawings, the same components are denoted by the same reference numerals, and duplicated explanations are omitted as appropriate. In the following, the "vertical direction" refers to the vertical direction in a state in which the medical device 1 is placed upright, as shown in FIG.

[0012] <Summary> First, an overview of an exhaust member 4 according to this embodiment and a medical instrument 1 including the exhaust member 4 will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a perspective view showing the medical instrument 1 according to this embodiment, and Fig. 2 is a cross-sectional view of the exhaust member 4 according to the first embodiment, taken along line II-II in Fig. 1.

[0013] The exhaust member 4 according to this embodiment is used in a medical device 1 having a negative pressure section (suction container 2) shown in FIG. 1 and 2, the exhaust member 4 includes a first opening 4b connectable to a negative pressure section, a second opening 4c capable of exhausting air from the inside to the outside when contracted, and a compressing section 4a configured to be elastically restored. The compressing section 4a is configured to be able to repeatedly exhaust air through the first opening 4b and the second opening 4c, and is characterized in that a ridge 4d is formed on the inner surface of the compressing section 4a.

[0014] According to the above configuration, the protrusions 4d increase the rigidity of the compression portion 4a, thereby increasing the elastic restoring force, and it is possible to provide an exhaust member 4 that can quickly adjust the pressure inside the negative pressure portion to an appropriate level by allowing air to be smoothly and repeatedly exhausted. In other words, even if the compression portion 4a is made of a material or structure with low elastic recovery, such as isoprene rubber, silicone rubber, or other synthetic rubber, air can be repeatedly and effectively exhausted to the outside of the exhaust member 4 (medical instrument 1).

[0015] Specifically, the compression part 4a of the exhaust member 4 has a function of exhausting air from inside the compression part 4a to the outside through the second opening 4c when contracted, and sucking air from inside the suction container 2 into the compression part 4a through the first opening 4b when restored. This function is realized by providing a one-way valve on each of the flow paths passing through the first opening 4b and the second opening 4c.

[0016] In addition, the "rib" according to the present invention refers to a rib that has a length dimension sufficiently larger than its width dimension and is formed in a stripe shape. It is preferable that at least one rib is formed around the entire circumference of the compressed portion, since this increases the elastic restoring force of the compressed portion, but the present invention is not limited to such a configuration. Specifically, the ribs may be formed in a row of several ribs at intervals.

[0017] The medical device 1 according to this embodiment is a medical device 1 that aspirates drainage liquid by negative pressure generated in a negative pressure section (suction container 2). The medical device 1 includes a negative pressure section and an exhaust member 4. According to the above configuration, the protrusion 4d increases rigidity, thereby increasing elastic restoring force, and air can be smoothly and repeatedly exhausted, thereby providing a medical device 1 that can quickly adjust the pressure inside the negative pressure section to an appropriate level.

[0018] <<First embodiment>> First, the overall configuration of a medical device 1 will be described with reference to FIG. The medical instrument 1 mainly comprises a suction container 2 that is in a negative pressure state, a storage container 3 that stores body fluids and the like, an exhaust member 4 for exhausting the air inside the medical instrument 1 (suction container 2) to the outside, and a balloon 5 for checking the pressure state of the suction container 2, etc.

[0019] A cap 2a capable of releasing air by communicating the air inside the suction container 2 with the outside is attached to the lower part of the suction container 2. In addition, a balloon 5 is disposed inside the suction container 2 by the cap 2a. The suction container 2 and the storage container 3 are internally connected by a connecting tube 6 . The upper part of the storage container 3 is provided with a suction port 3a and a discharge port 3c, and a tube not shown is connected to the suction port 3a, so that the storage container 3 can store body fluids, etc., and the stored body fluids, etc. can be directly discharged through the discharge port 3c. A clamp member 3b is attached to the suction port 3a, and the clamp member 3b is configured to block the flow path leading to the suction port 3a, thereby making it possible to stop the flow of bodily fluids from the human body into the storage container 3.

[0020] Next, the exhaust member 4 according to the first embodiment will be described with reference to FIGS. The exhaust member 4 is used to create a negative pressure state inside the suction container 2 and includes an elastic, spherical compressing portion 4a, a cylindrical first opening 4b that protrudes downward from the compressing portion 4a and is connected to the upper portion of the suction container 2, and a cylindrical second opening 4c that communicates with the outside. 1, a one-way valve 7 is attached to the second opening 4c, and a one-way valve (not shown) is also attached to the top of the suction container 2 connected to the first opening 4b. These one-way valves make it possible to form a one-way air flow that exhausts the air sucked from the suction container 2 into the exhaust member 4 to the outside (upward) of the exhaust member 4, as described above.

[0021] A protrusion 4d having a semicircular cross section that extends in the latitude direction and protrudes toward the axis of the exhaust member 4 is formed around the entire periphery of the inner surface of the compressed portion 4a of the exhaust member 4 at the center in the vertical direction. The thus formed ridges 4d increase the cross-sectional area of ​​the compressed portion 4a over the entire circumference, thereby increasing the rigidity of the compressed portion 4a and increasing the restoring force of the compressed portion 4a after it is compressed. Therefore, the compressed portion 4a can be repeatedly compressed to exhaust air from the exhaust member 4, and the inside of the suction container 2 can be quickly transitioned to a set negative pressure state.

[0022] <<Second embodiment>> Next, an exhaust member 14 according to a second embodiment will be described with reference to Fig. 3. Fig. 3 is a cross-sectional view of the exhaust member 14 according to the second embodiment, taken along line II-II in Fig. 1. The compression portion 14a is formed in a spherical shape, and multiple (four in this embodiment) protrusions 14d are arranged on the inner surface of the compression portion 14a of the exhaust member 14 at equal intervals in the circumferential direction (in this embodiment, every 90 degrees from the center of the compression portion 14a when viewed in a plane). The protrusions 14d extend in the meridian direction of the compressed portion 14a and have a semicircular cross-sectional shape that protrudes toward the axial center of the exhaust member 14.

[0023] In this way, the ribs 14d increase the cross-sectional area of ​​the compressing portion 14a all around, thereby increasing the rigidity of the compressing portion 14a and increasing the restoring force of the compressing portion 14a after it is compressed. Therefore, the compressing portion 14a can be repeatedly compressed to exhaust air from the exhaust member 14, and the inside of the suction container 2 can be quickly transitioned to a set negative pressure state. In particular, the ridges 14d formed at equal intervals in the circumferential direction of the compressed portion 14a facilitate the compressed portion 14a to restore to its original shape evenly. Therefore, the operator can smoothly and repeatedly compress the compressed portion 14a when applying negative pressure to the suction container 2.

[0024] The protrusions 14d are formed only on the spherical compression portion 14a, and are not formed on the cylindrical first opening 4b and second opening 4c. By forming them in this manner, when a one-way valve (not shown) is attached to the first opening 4b and a one-way valve 7 is attached to the second opening 4c, air leakage due to the protrusions 14d is prevented.

[0025] In the above description, the four ridges 14d are formed at equal intervals on the compression portion 14a, but the present invention is not limited to this configuration. For example, the ridges 14d may be formed in an odd number, such as three, five, or seven, at equal intervals on the compression portion 14a. With this configuration, when the operator squeezes the compression portion 14a, the ridges 14d are prevented from coming into contact with each other, so that the compression portion 14a can be deeply squeezed, and the inside of the suction container 2 can be quickly transitioned to a target negative pressure state. Furthermore, if the ridges 14d are formed at equal intervals on the compressed portion 14a, the compressed portion 14a can be easily restored without bias after compression, allowing the operator to suitably perform another compression. However, the present invention is not limited to such a configuration, and the ridges 14d may be formed at sparse intervals on the compressed portion 14a.

[0026] <<Third embodiment>> Next, exhaust member 24 according to a third embodiment will be described with reference to Fig. 4. Fig. 4 is a cross-sectional view of exhaust member 24 according to the third embodiment, taken along line II-II in Fig. 1. The compressed portion 24a of the exhaust member 24 is formed in a spherical shape, and the protrusions 24d extend in the latitude direction of the compressed portion 24a and are arranged symmetrically about the central latitude line in multiple locations (in this embodiment, three including one located in the center). According to the above-mentioned configuration, the compression portion 24a can be easily restored to a uniform state, so that the operator can smoothly and repeatedly compress the compression portion 24a when applying negative pressure to the suction container 2.

[0027] In particular, the ribs 24d according to this embodiment are formed to have a trapezoidal or rectangular cross section rather than a semicircular cross section, and the lengths L1 and L2 of the sides of the ribs 24d extending toward the center of the compressed portion 24a are longer than the length L3 of the short side of the surface facing the center of the compressed portion 24a. According to the above-mentioned configuration, the second moment of area of ​​the ridges 24d can be increased, and the rigidity of the compression portions 24a can be effectively increased, thereby increasing the elastic restoring force of the compression portions 24a.

[0028] <<Fourth embodiment>> Next, an exhaust member 34 according to a fourth embodiment will be described with reference to Fig. 5. Fig. 5 is a cross-sectional view of the exhaust member 34 according to the fourth embodiment, taken along line II-II in Fig. 1. The ridges 34d, 34e provided on the compressed portion 34a of the exhaust member 34 according to the fourth embodiment are formed in a lattice pattern with a plurality of ridges intersecting each other. Specifically, the compression portion 34a of the exhaust member 34 is formed in a spherical shape, and the protrusions 34d extend in the latitude direction of the compression portion 34a, and are arranged symmetrically with respect to the central latitude line in multiple locations (in this embodiment, three including the one located in the center). Furthermore, the ridges 34e extend in the meridian direction of the compression portion 34a and are arranged at equal intervals in the circumferential direction (in this embodiment, four ridges) at intervals of 90 degrees from the center of the compression portion 14a in a plan view. The ridges 34d and 34e have semicircular cross-sectional shapes that protrude toward the axis of the exhaust member 34, are arranged to intersect with each other, and are formed in a lattice pattern as a whole. In this way, by forming the ridges 34d, 34e in a lattice pattern, the elastic restoring force of the compressed portion 34a can be increased, and the compressed portion 34a can easily restore to its original shape evenly. This makes it easier for the operator to repeatedly squeeze the compressed portion 34a.

[0029] <<Fifth embodiment>> Next, an exhaust member 44 according to a fifth embodiment will be described with reference to Fig. 6. Fig. 6 is a cross-sectional view of exhaust member 44 according to the fifth embodiment, taken along line II-II in Fig. 1. Protrusions 44d provided on compressed portions 44a of exhaust member 44 according to the fifth embodiment are formed to have a triangular cross section rather than a semicircular cross section. With this configuration, when the operator squeezes the compression portion 44a, interference caused by the protrusions 44d coming into contact with each other is suppressed, allowing the compression portion 44a to be deeply squeezed, and the interior of the suction container 2 can be quickly transitioned to the target negative pressure state. In addition, as long as the protrusion 44d has a pointed shape at least on the central side of the compression portion 44a, the above-mentioned effect can be achieved, and the cross section is not limited to a triangular shape.

[0030] <<Sixth embodiment>> Next, an exhaust member 54 according to a sixth embodiment will be described with reference to Fig. 7. Fig. 7 is a diagram showing a side view of the exhaust member 54 according to the sixth embodiment. The compressed portion 54a of the exhaust member 54 according to the fifth embodiment has ridges 54d and 54e formed on its outer surface. The ridges 54d, 54e are formed in a lattice shape in the same configuration as the ridges 34d, 34e formed on the inner surface of the compression portion 34a shown in FIG. 5 and described above. In this way, even if the ridges 54d, 54e are formed on the outer surface of the compression portion 54a, the rigidity of the compression portion 54a can be increased.

[0031] For example, protrusions may be formed on both the outer and inner surfaces of the compression portion 54a, which can further increase the elastic restoring force of the compression portion. On the other hand, the ridges 54d and 54e may be formed only on the outer surface of the compression part 54a, and the inner surface may be smooth without ridges. In this way, the compression part 54a can be deeply compressed without being hindered by the ridges during compression, and the inside of the suction container 2 can be quickly transitioned to a target negative pressure state. Other latitudinal or longitudinal ridges may be formed on the outer surface of the compression portion.

[0032] <<Molding method>> The exhaust members 4, 14, 24, 34, 44, and 54 according to the above embodiments are formed by compression molding. Specifically, the rubber is heated and compressed between a pair of outer mold halves (not shown) and a roughly spherical inner mold, and then cooled and hardened. By forming grooves in a shape corresponding to the ridges of the compression parts on the outer peripheral surface of the inner mold, it is possible to mold the exhaust members 4, 14, 24, 34, 44 having ridges protruding from the inner surface of the compression parts. Also, by forming grooves in a shape corresponding to the ridges of the compression parts on the inner peripheral surface of the outer mold, it is possible to mold the exhaust member 54 having ridges protruding from the outer surface of the compression parts. Then, the molded exhaust member is inflated with air, and the cylindrical opening (first opening 4b or second opening 4c) is opened wide to eject the inner mold, thereby allowing the exhaust member to be removed from the inner mold and the outer mold.

[0033] In the medical device 1 according to the above embodiment, the suction container 2 and the storage container 3 are separately provided, but the present invention is not limited to such a configuration as long as an exhaust member is provided. In other words, the suction container 2 and the storage container 3 may be integrally formed to constitute a negative pressure section.

[0034] The above embodiment encompasses the following technical ideas. (1) Used in a medical device equipped with a negative pressure section, The device is provided with a first opening that can be connected to the negative pressure unit, a second opening that can exhaust air from the inside to the outside when contracted, and a compression unit that is configured to be elastically restored and can repeatedly exhaust the air through the first opening and the second opening, An exhaust member characterized in that a protrusion is formed on an inner or outer surface of the compression portion. (2) The exhaust member according to (1), wherein the protrusions are formed in a lattice pattern by intersecting a plurality of protrusions. (3) The compression portion is formed in a spherical shape, The exhaust member according to (1) or (2), wherein the protrusions extend in a meridian direction of the compressed portion and are disposed uniformly in a circumferential direction. (4) The compression portion is formed in a spherical shape, The exhaust member according to any one of (1) to (3), wherein the protrusions extend in a latitude direction of the compressed portion and are arranged symmetrically with respect to a central latitude line. (5) The compression portion is formed in a spherical shape, The exhaust member according to any one of (1) to (4), wherein the length of the side of the protrusion extending toward the center of the compressed portion is longer than the length of the short side of the surface facing the center of the compressed portion. (6) A medical device that aspirates drainage fluid by negative pressure formed in a negative pressure section, The negative pressure unit, A medical instrument comprising an exhaust member according to any one of (1) to (5). [Explanation of symbols]

[0035] 1 Medical equipment 2 Suction container (negative pressure section) 2a Cap 3. Containment Container 3a Suction port 3b Clamping member 3c outlet 4 Exhaust parts 4a Compression section 4b 1st opening 4c 2nd opening 4d protrusion 5. Balloon 6 Connecting tube 7 One-way valve 14 Exhaust parts 14a Compression section 14d protrusion 24 Exhaust parts 24a Compression section 24d protrusion 34 Exhaust parts 34a Compression section 34d, 34e protrusions 44 Exhaust parts 44a Compression section 44d, 44e protrusions 54 Exhaust parts 54a Compression section 54d, 54e protrusions

Claims

1. Used in a medical device having a negative pressure section, The device is provided with a first opening that can be connected to the negative pressure unit, a second opening that can exhaust air from the inside to the outside when contracted, and a compression unit that is configured to be elastically restored and can repeatedly exhaust the air through the first opening and the second opening, The compression portion is formed in a spherical shape, A plurality of ridges are formed on the inner surface of the compression section, If a virtual line passing through the center of the compression unit is defined as the axis of the compression unit, The first opening is disposed on one end side in the axial direction of the compression portion, The second opening is disposed on the other end side in the axial direction, the plurality of ridges include a plurality of first ridges arranged spaced apart from one another in the axial direction, an entirety of each of the plurality of first protrusions is on an imaginary plane perpendicular to the axis, and extends all around the circumference in a latitude direction centered on the axis, an exhaust member characterized in that the plurality of first ridges include a first latitude line ridge arranged on a latitude line at the center of the compression portion, and a plurality of second latitude line ridges arranged symmetrically to one another in the axial direction with respect to the first latitude line ridge.

2. the plurality of ridges further includes a plurality of second ridges extending in a direction perpendicular to the plurality of first ridges, The exhaust member according to claim 1 , wherein the first ridges and the second ridges are perpendicular to each other to form a lattice shape.

3. The plurality of ridges include a plurality of second ridges, the second ridges extend in a meridian direction centered on the axis, The exhaust member according to claim 1 or 2, wherein the second ridges are disposed at equal angular intervals in the circumferential direction of the compressed portion.

4. 4. The exhaust member according to claim 1, wherein a length of a side of the protrusion extending toward a center of the compressed portion is longer than a length of a short side of a surface facing the center of the compressed portion.

5. A medical device that aspirates drainage fluid by negative pressure formed in a negative pressure section, The negative pressure unit, A medical instrument comprising the exhaust member according to any one of claims 1 to 4.

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