JP3030032U - Board fixing tool for medical equipment - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a substrate fixing tool for a medical instrument capable of fixing substrates to each other with a small number of parts and by a simple operation and greatly improving productivity and maintainability. Two substrates used in a medical device
A substrate fixing tool for a medical instrument, in which at least an outer peripheral portion for fixing 0 and 30 to each other in an electrically insulating state is formed of an electrically insulating material, the substrate having a height corresponding to the thickness of the substrate 30. An upper cylindrical portion 11, a prismatic portion 12, an intermediate cylindrical portion 14, which has a length corresponding to the thickness of the substrate 20 and which is fitted to the hole portions 31 to 33 arranged in the substrate 30 and which is disposed in the substrate 20. 21-23
Lower cylindrical portion 15 that fits in the circular portion, and screw engaging portions (1 having a cross-sectional nebula cross-sectional shape that engages the holes 21 to 23).
3), and a screw hole is provided inside the central portion of the upper surface of the upper cylindrical portion 11.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a board fixing tool for medical instruments for fixing boards used in medical institutions.

[0002]

[Prior art]

 In patient monitoring devices and other medical devices to which electronic technology is applied, it is the most important to ensure the safety of the patient and the operator, and generally a ground wire is connected to prevent accidents such as electric shock. Has been done. Furthermore, in medical equipment, measures must be taken to prevent electric shock accidents even if an accident such as disconnection of the ground wire occurs.

Therefore, in a conventional medical device, a photocoupler is used for a sensor or the like that comes into direct contact with a living body, and is electrically insulated from a processing unit of a machine body having a large electric capacity. Was adopted to improve patient safety.

[0004]

[Problems to be solved by the device]

 However, in a patient monitoring device, etc., the target to be monitored differs depending on the patient. , The biometric information input unit is removed or inserted as necessary.

For this reason, when the module is removed or inserted, the metal portion on the surface of the module housing comes into contact with the module, which may cause an electric shock in the module or static electricity stored in the living body. There is an unavoidable risk that an accident may flow into the module and destroy the electric circuit of the module. In order to prevent this, when fixing the board inside the module to the external housing of the module, etc., it was fixed with a screw formed of an insulating material. For this reason, there were many problems that the screws could not be fixed when the screws were lost, such as when replacing the board. In this case, if the board is fixed with a general metal screw, the board and the external housing are electrically connected to each other, which may cause an accident such as electric shock.

[0006]

[Means for Solving the Problems]

 The present invention has been made for the purpose of solving the above problems, and an object of the present invention is to provide a substrate fixing device for a medical device that ensures safety and at the same time has improved productivity and maintainability. And, as one means for achieving such an object, for example, the following configuration is provided.

That is, the two substrates (20, 30) used in the medical device are fixed to each other in an electrically insulating state, and at least the outer peripheral portion is formed of an electrically insulating material. A tool, the first board having a height substantially equal to the thickness of the first board (30) and fitted into the holes (31 to 33) arranged in the first board (30). A hole provided in the first substrate (30) having an insertion protrusion (11) and a prismatic portion (12) having a polygonal cross section in at least a part continuous with the first substrate insertion protrusion (11). The intermediate portion (12, 14) having a wider cross-sectional area than the portion (31 to 33), the columnar portion (15) having a predetermined diameter of at least the second substrate thickness, and the columnar portion (15). ) Has a cross-sectional shape of a nebula with a part protruding outward from the shape of the cylinder (15) And a screw hole into which a screw having a predetermined diameter is screwed is provided inside the upper surface of the first board insertion convex portion (11).

Further, for example, the medical device substrate fixing tool is characterized by being formed of an insulating plastic. The prism portion (12) of the intermediate portion is a hexagonal prism formed continuously with the first substrate insertion convex portion (11). Alternatively, the first substrate insertion convex portion has a columnar portion (15a) having a predetermined diameter of a length corresponding to the thickness of the first substrate and the columnar portion (15a) continuous with the columnar portion (15a). 15a) A screw engaging portion (13a) having a substantially nebula cross-sectional shape, a part of which protrudes outward from the shape.

Further, for example, a through hole (17) is formed in the central portion, and the through hole portion (17) is provided in one of the upper and lower housing portions that cover the first and second substrates. The screw (310) inserted through the hole (320) provided is penetrated and the distal end of the screw (310) is screwed into the screw hole (111) provided in the other housing. The holding pieces (121, 122) for holding the protruding portion of the screw engagement portion (13) from both sides are provided outside at least one of the screw hole portions (111) of the other housing portion. It is characterized by being done.

[0010]

[Embodiment of device]

 Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. [First Embodiment of the Invention] FIG. 1 is an exploded view showing an example in which two substrates are fixed to each other by using a medical device substrate fixing tool according to an embodiment of the present invention. FIG. The figure which shows the state which fixed the two board | substrates shown using the board | substrate fixing tool for medical devices of embodiment of this invention, and FIG. 3 is a side view of the board | substrate fixing tool for medical devices of this example.

In the figure, 10 is a medical device substrate fixing tool according to an embodiment of the present invention, and 20 and 30 are electronic circuit boards fixed to each other by the medical device substrate fixing device 10 of this example. . The medical instrument substrate fixing tool 10 of the present example is formed of a material having a predetermined strength and having an electrical insulating property, for example, insulating plastic, and two substrates 20 and 20 are formed through the medical instrument substrate fixing tool 10. The 30 is formed so as not to be electrically connected. Moreover, since the whole is made of an insulating material, even if a part of the outer peripheral portion of the medical device substrate fixing tool 10 comes into contact with the external housing, or it is made of another conductive material. It is the same even if it touches a place.

The substrate fixing tool 10 for a medical instrument includes an upper columnar portion 11 forming a first substrate insertion convex portion to be fitted in holes 31 to 33 of a predetermined diameter arranged in the electronic circuit board 30, and the upper portion. After the cylindrical portion 11, a slightly larger diameter prismatic portion 12 having a substantially hexagonal cross section, an intermediate cylindrical portion 14 following the prismatic portion 14, and a hole portion 21 formed in the substrate 20 with a small diameter following the intermediate cylindrical portion 14 A lower cylindrical portion 15 having an outer diameter substantially the same as the diameter of the circular portion of 23, and a screw thread having a cross-section substantially nebula sectional shape which is continuous with the lower cylindrical portion 15 and partially protrudes outward from the lower cylindrical portion 15 It is configured with the engaging portion 13.

The length of the upper cylindrical portion 11 is at least the thickness of the substrate 30, and the length of the lower cylindrical portion 15 is substantially the thickness of the substrate 20. In the board 20, 24 is an input / output interface connector, 25 is a female connector for connection with the board 30, and 26 is a pushing connector for connection with the board 30. Further, in the board 30, 35 is a male connector connected to the female connector 25 of the board 20, and 36 is a female connector connected to the male connector 26 of the board 20. In the board 20 and the board 30, other electronic components unrelated to the connection and fixing of the boards are omitted, and in the actual board, a large number of ICs and the like are mounted on the board. It should be noted that the bottom surface of the substrate 20 (the back side portion in FIG. 1) and the bottom surface of the substrate 30 (the top surface portion in FIG. 1), substantially the entire surface and most of the surface, are not affected by contact with other parts. The insulating coating is formed so that.

An operation of fixing the two substrates 20 and 30 to each other by using the medical instrument substrate fixing tool 10 of the present example having the above configuration will be described below. The holes 21 to 23 of the substrate 20 have substantially the same shape as the cross section of the screw engagement portion 13, and the screw engagement portion 13 is aligned with the holes 21 to 23 so that the substrate 20 is positioned at the lower cylindrical portion 15. Insert until it comes. Then, by rotating the medical device substrate fixing tool 10 in this state by approximately 90 degrees, the projecting portion of the screw engaging portion 13 is rotated from the hole to the bottom surface of the substrate 20, and the medical device substrate fixing device 10 is rotated. Can be fixed to the substrate 20.

In this example, since the prismatic portion 12 is formed unlike the conventional tool of this type, the spanner is set on the prismatic portion 12 when the medical instrument substrate fixing tool 10 is rotated. Then, it can be rotated using this spanner. As a result, a tool with good workability can be obtained. In this way, the substrate fixing tool 10 for a medical instrument of this example is attached to each of the three holes 21 to 23 arranged in the substrate 20.

Next, insert the connectors while carefully aligning the female connectors 25 and the male connectors 35 of the substrates 20 and 30 and the male connectors 26 and the female connectors 36 of the substrates 20 and 30 so that they are securely connected. To go. Then, when the holes 31 to 33 of the substrate 30 reach the upper position of the upper cylindrical portion 11 of the medical device substrate fixing tool 10 of the present example, the holes 31 to 33 and the upper cylindrical portion 11 are aligned with each other. The upper column part 11 is fitted into the parts 31 to 33.

As a result, the substrate 20 and the substrate 30 are fixed with the upper cylindrical portion 11 fitted in the holes 31 to 33. Since the distance between the substrate 20 and the substrate 30 is regulated by the total length of the prismatic portion 12 and the intermediate cylindrical portion 14, this length ensures that the connectors of the substrates 20 and 30 are securely connected. It needs to be in a state.

FIG. 2 shows a state in which the two substrates 20 and 30 are thus fixed by using the medical instrument substrate fixing tool 10 of the present example. In the medical device substrate fixing tool 10 of this example, a screw hole 16 is further formed from the upper surface of the upper cylindrical portion 11, and the screws 41 to 43 can be screwed into this screw hole as shown in FIG. It is made possible. However, the screws 41 to 43 are not directly screwed from the upper portion of the upper columnar portion 11, but are screwed through a fixing hole provided in an external casing that covers the substrate, and the substrate is casing. Used to fix inside the body.

In this case, since the medical device substrate fixing tool 10 of this example is formed of an insulating plastic, the screws 41 to 43 are special-purpose screws formed of an insulating material. Even if a metal screw having a normal general specification is used, it is possible to prevent an electrical conduction state caused by screwing the screws 41 to 43. Therefore, even if the user accidentally loses the screw when using it on the user side, the board part can be fixed to the external housing by simply screwing the general metal screw. It is possible to provide a medical machine that does not generate any electric shock.

This is especially important for medical equipment, and if different screws are used by mistake by using a safe machine that will not be adversely affected by whatever screw is used. However, it can prevent an accident from occurring. Further, in this example, when the two substrates are engaged with each other and fixed, by using the medical instrument substrate fixing tool 10 having a common specification, the two substrates can be fixed with substantially one-touch, which greatly improves the operability. You can In other words, the number of parts can be reduced and the operation is extremely simple compared to the case where two boards are fixed via a spacer and screws are screwed into the spacer from above and / or below. It can be fixed.

Furthermore, by making the diameter of the upper cylindrical portion 11 substantially equal to or slightly larger than the diameter of the holes 31 to 33 of the upper substrate 30, the upper cylindrical portion 11 is made to have the holes 31 to 31 of the substrate 30. The substrate 30 can be fixed to the medical device substrate fixing tool 10 only by fitting it into the device 33, and operability can be greatly improved in this respect as well. As described above, according to the embodiment of the present invention, two board members can be fixed with one touch, the number of parts for fixing can be minimized, and productivity (easy to assemble) can be improved. And cost reduction effect) can be greatly improved.

Furthermore, it is possible to provide a substrate fixing tool for a medical device that ensures safety while improving productivity and maintainability. Further, by fixing the substrate using the medical instrument substrate fixing tool 10 which is entirely made of an insulating material, and by screwing a screw into the screw hole 16 of the medical instrument substrate fixing tool 10, The board can be fixed to the housing, and even in this case, the ground wire on the board can be reliably electrically isolated from the external housing without affecting the screw type. Therefore, a highly safe medical device can be provided.

[Embodiment of the Second Invention] In the above description, an example in which a screw hole is provided in the medical device substrate fixing tool 10 is described, but the present invention is not limited to the above example. It is not intended to use the substrate fixing tool 10 for a medical instrument only for engaging two substrates, but to facilitate the operation of accommodating and fixing the engaged substrate group in the housing. By doing so, the assembly of the entire medical machine including the housing can be easily fixed, the number of parts for fixing can be minimized, and productivity (easy to assemble and cost reduction effect) can be achieved. It can be greatly improved.

In the embodiment of the second invention, in the medical device substrate fixing tool 10, a through hole is formed in the central portion in place of the screw hole 11 shown in FIG. 3, and the through hole is used. A screw for fixing the casing is formed so as to be screwed into a screw hole portion provided in the casing. Hereinafter, a second example of the embodiment of the present invention will be described with reference to FIG. FIG. 4 is a diagram for explaining an example of fixing a substrate in a housing using a substrate fixing tool for a medical device according to an embodiment of the second invention. 4A is an overall view showing the fixing method, and FIG. 4B is a partially enlarged view for explaining the relationship between the medical device substrate fixing tool 10 and the upper and lower casings.

In comparison with the first embodiment shown in FIG. 3, the medical device board fixing tool according to the second embodiment of the present invention shown in FIG. 4 has a threaded hole 11 instead of the screw hole 11. A hole 17 is formed. Then, as in the first embodiment, the two substrates are fixed as shown in FIG. The operation of fixing the substrate 200 fixed by the medical device substrate fixing tool 10 in the second embodiment in the box-shaped casing formed by the lower casing 100 and the upper casing 300 will be described below. explain.

As clearly shown in FIG. 4B, the lower housing 100 is provided with a female screw portion 111 in accordance with the position of the through hole 17 of the substrate fixing tool 10 for a medical instrument of the substrate 200. The female screw portion 111 is clamped outwardly in the lateral direction of the housing, and a part of the screw-engagement portion 13 of the medical device substrate fixing tool 10 is protruded from both sides to sandwich the medical device substrate. Clamping pieces 121 and 122 are provided to prevent the fixing tool 10 from rotating. As shown in FIG. 4, the upper surfaces of the holding pieces 121 and 122 are formed to be higher than the upper surface of the female screw portion 111 by a predetermined distance, and the board 200 has a part of the screw engagement portion 13 protruding outward. By fixing so as to project in the lateral direction of the housing and housing it in the lower housing 100, it is possible to prevent the medical device substrate fixing tool 10 from rotating with respect to the substrate.

Then, the upper casing is set in a state where the substrate 200 is housed in the lower casing 100, for example, so that the screw 310 penetrates the through hole 17 from the fixing hole 320 provided in the upper casing 300. And is screwed into a screw hole portion 111 provided in the lower casing 100 to fix the upper and lower casing portions and the substrate to each other. In the portion of the substrate 200 where the substrate fixing tool 10 for medical equipment is not arranged, the substrate 200 and the upper housing are fixed by the screw 315, and the substrate 200 has a screw hole. .

In FIG. 4, a flexible conductive plate, which is coated with an insulating thin film on the top and bottom, is provided between the substrate 200 and the lower casing 100 and the upper casing 300 except for the substrate fixing tool 10 for medical instruments. It is desirable to arrange so that the influence of external noise is reduced. As described above, according to the embodiment of the second invention, the substrate can be housed and fixed in the housing with a simple structure and work. Further, by forming the medical instrument base plate fixing tool 10 with an insulating material, it is possible to maintain the housing and the substrate in a completely insulated state even if the screw is a conductive material.

In addition, it is possible to provide a substrate fixing device for a medical device that secures safety and improves productivity and maintainability as in the case of the above-described first embodiment of the invention. [Third Embodiment of the Invention] Further, in the above description, one end portion of the medical instrument substrate fixing tool has an insertion convex portion that fits into the round hole portion provided in the first substrate. The example in which the other end is provided with the threaded engagement portion has been described. However, the present invention is not limited to the above example, and both ends may be provided with screw engaging portions. With this configuration, the substrates can be fixed to each other without using screws or the like.

Further, in this case, by providing the through hole in the central portion of the substrate fixing tool for medical instruments, the upper and lower housings and the substrate can be fixed in substantially the same manner as the example shown in FIG. A third embodiment of the present invention is shown in FIG. As shown in FIG. 5, in the third embodiment, a cross section in which both ends are connected to the columnar portions 15a and 15b and the columnar portions 15a and 15b, and a part of the shape of the columnar portions 15a and 15b protrudes outward Screw engaging portions 13a and 13b having a substantially nebula cross-sectional shape.

When the substrate is fixed using the third embodiment having the above-mentioned configuration, the screw engagement portions 13a and 13b of the substrate to be fixed are replaced with the screw engagement portions 13a and 13b. The hexagonal prism 12 is rotated by 90 degrees by hand or with a spanner or the like to move the outward projecting portions of the screw engaging portions 13a and 13b from the hole position. By the above, the substrate can be fixed without using screws.

[0032]

[Effect of device]

 As described above, according to the present invention, substrates can be fixed to each other with a small number of parts and a simple operation, and productivity and maintainability can be greatly improved. Furthermore, by forming the whole body with an electrically insulating material, it is possible to reliably prevent electrical continuity due to the fixture for fixing the substrates, and to fix the control substrate of the patient monitoring device that is often removed. Even in such a case, the metal portion on the surface of the housing and the substrate can be reliably kept in an insulated state, and safety can be ensured.

[Brief description of drawings]

FIG. 1 is an exploded view showing an example in which two substrates are fixed to each other using a medical device substrate fixing tool according to an example of an embodiment of the present invention.

FIG. 2 is a diagram showing a state in which the two substrates shown in FIG. 1 are fixed by using the medical device substrate fixing tool according to the embodiment of the present invention.

FIG. 3 is a side view of the medical device substrate fixing tool of this example.

FIG. 4 is a view for explaining an example of fixing a substrate in a housing using the substrate fixing tool for a medical device according to the second embodiment of the present invention.

FIG. 5 is a side view of a medical device substrate fixing tool according to an embodiment of a third device of the present invention.

[Explanation of symbols]

 10 Medical Device Board Fixing Tool 11 Upper Cylinder Part 12 Square Cylinder Part 13 Threading Engaging Part 14 Intermediate Cylinder Part 15 Lower Cylinder Part 16 Screw Hole 20, 30 Electronic Circuit Board

Claims (5)

[Scope of utility model registration request] 1. A device for fixing a substrate for a medical device, wherein at least an outer peripheral portion of the two substrates (20, 30) used in the medical device is electrically insulated from each other and is fixed to each other. The hole portions (31 to 3) each having a height at least approximately equal to the thickness of the first substrate (30) and arranged in the first substrate (30).
3) A first board insertion convex part (11) fitted to the first board insertion convex part (11), and a prism board part (12) having a polygonal cross section in at least a part continuous with the first board insertion convex part (11). An intermediate portion (12, 14) having a wider cross-sectional area than the hole portions (31-33) arranged in (30), and a predetermined diameter of at least the thickness of the second substrate (20). A columnar portion (15) and a threaded engagement portion (13) continuous with the columnar portion (15) and having a substantially nebula cross-sectional shape in which a part of the columnar portion (15) protrudes outward. A board fixing tool for a medical machine, characterized in that a screw hole (16) into which a screw of a predetermined diameter is screwed is provided inside the upper surface of the first board insertion convex portion (11). 2. The substrate fixing tool for a medical machine according to claim 1, wherein the substrate fixing tool for a medical machine is formed of an insulating plastic. 3. The prismatic portion (12) of the intermediate portion is provided with the first
The substrate fixing tool for a medical instrument according to claim 1 or 2, which is a hexagonal prism formed continuously with the substrate insertion convex portion (11). 4. The first board insertion protrusion is formed on the first substrate.
Columnar portion (15 having a predetermined diameter equal to the thickness of the substrate)
a) and the columnar portion (15a) continuously with the columnar portion (1
5a) A threaded engagement portion (13a) having a cross-section substantially nebula cross-sectional shape, a part of which protrudes outward from the shape, and a medical instrument substrate according to any one of claims 1 to 3. Fixing tool. 5. A through hole (17) is formed in a central portion, and the through hole portion (17) is arranged in one housing portion of upper and lower housing portions covering the first and second substrates. The screw (310) inserted through the hole (320) provided is penetrated and the distal end of the screw (310) is screwed and fixed to the screw hole (111) provided in the other housing. A clamping piece (121, 122) for clamping the projecting portion of the screw engagement portion (13) from both sides is provided outside at least one of the screw hole portions (111) of the other casing. The substrate fixing device for a medical instrument according to claim 1, wherein