JP2010538711A - Pressure measuring device, especially blood pressure measuring device - Google Patents

Abstract

The present invention relates to a pressure measuring device including a meter and an impact damping mechanism, and more particularly to a blood pressure measuring device. According to the present invention, a screw coupling portion is provided for connecting the instrument to the impact damping mechanism.
[Selection] Figure 2

Description

  The present invention relates to a pressure measuring device including a meter and an impact damping mechanism, and more particularly to a blood pressure measuring device.

  A pressure measuring device of the above kind is known, for example, from US Pat. At that time, an impact damping mechanism is formed by a holding portion 320 called a retainer, and a meter is embedded in the holding portion. As long as the force that moves the meter out of the holding unit acts on the meter, the holding unit itself does not exhibit an impact damping effect.

  Furthermore, an impact damping mechanism comparable to that of a pressure measuring device is known from US Pat.

International Publication No. 2006/099578 Pamphlet US Patent Application Publication No. 2004/0083816

  An object of the present invention is to improve a known pressure measuring device according to Patent Document 1 so that the instrument is better protected against damage due to impact or the like.

  According to the present invention, this problem is solved by a screw coupling for connecting the instrument to the impact damping mechanism.

  The recognition underlying the present invention is that the screw connection guarantees a reliable connection of both parts to be joined together and in all spatial directions. This threaded joint can withstand, for example, a compressive load as well as a tensile load. As a result, the instrument is reliably protected from damage due to impact or the like, and is protected regardless of the direction in which the impact acts.

  Preferably, according to the present invention, the instrument and / or the impact damping mechanism has one hole, and the female screw of the screw coupling portion is disposed in the hole.

  In other words, the internal thread of the threaded joint can be attached to the instrument, to the impact damping mechanism, or both.

  Similarly, preferably according to the present invention, the impact attenuating mechanism and / or the instrument has one protrusion, and the external thread of the screw coupling part is arranged in the protrusion.

  That is, as is still valid, the protrusions can be placed on the instrument, on the impact damping mechanism, or both.

  Preferably, according to the present invention, the female screw and / or the male screw of the screw coupling portion are formed integrally with the instrument or the impact damping mechanism.

  Such a configuration has an advantage that the number of parts is small.

  However, according to the present invention, the female thread of the screw coupling part can be additionally or selectively formed on the threaded insert.

  Such a threaded insert is preferably arranged according to the invention in the hole of the instrument or impact damping mechanism in which the internal thread for the threaded connection is provided.

  More preferably, according to the present invention, the pressure measuring device has a housing, and the threaded insert pushes the protrusion of the impact damping mechanism into the undercut of the housing.

  In other words, in this configuration, the threaded insert is not only used as a part of the screw joint, but also used to hold the impact damping mechanism in the housing.

  More preferably, according to the present invention, a housing is provided in the pressure measuring device, and the impact damping mechanism is fixed to the housing.

  This fixation can be realized in any manner, in particular by means of shape bonding, friction bonding or fixing elements.

  According to a particularly preferred embodiment of the present invention, a female screw of the screw coupling portion is attached to the inner wall of the passage, and the instrument is coupled to the outside through the passage. The passage is thus used for two purposes: on the one hand to couple the instrument to the outside world and on the other hand to receive the internal thread.

  In order to couple the instrument to the outside world, for example, the gas (air) whose pressure is to be measured can be supplied to the instrument through a passage. Alternatively, the passage may be utilized to transmit a mechanical measurement variable by receiving a waveform that is rotated depending on the dominant pressure. Finally, the passage can also receive a line, for example an electrical line for transmitting the measurement variable.

  Preferably, a mechanism for preventing the instrument from rotating with respect to the impact damping mechanism is provided.

  Such a rotation prevention mechanism is beneficial to the accuracy of the measurement result (read).

  Preferably, according to the present invention, the rotation preventing mechanism has a deformed portion. In other words, this anti-rotation mechanism is based on the principle of friction bonding and / or shape bonding. The deformed portion can be a rib, a corrugation or the like.

  In order to solve the problem of better protecting the instrument from damage due to impact or the like in the present invention instead of or in addition to the above-described screw coupling portion, the impact damping mechanism is provided on the bottom side of the instrument or on the screw. Has an instrument edge enclosure on the side of the coupling.

  As long as the screw connection is provided, the bottom side of the instrument is coincident with the screw connection side.

  The enclosure preferably surrounds the instrument along the edge.

  In other words, the enclosure completely surrounds the instrument in the circumferential direction. This allows the enclosure to be used for instrument sealing as well as shock attenuation.

  More preferably, an introduction slope is provided in the enclosure.

  This configuration facilitates the insertion of the instrument into the enclosure.

  Also preferably, according to the present invention, in order to increase the measurement accuracy / reading accuracy, a mechanism for preventing the instrument from rotating with respect to the enclosure can be provided.

  The anti-rotation mechanism can also have a deformed portion, which can be a rib, a corrugation or the like.

  The enclosure can basically be formed arbitrarily. In particular, the enclosure can be formed integrally with a part of the impact damping mechanism that is useful for screwing. Preferably according to the invention, the enclosure is secured to the housing of the pressure measuring device.

  Such a fixation can optionally also be effected in particular by friction bonding, shape bonding or fixing elements.

  Preferably, according to the invention, the (other) part of the shock damping mechanism is on the instrument side opposite the bottom or the threaded connection.

  The threaded connection-as detailed above-already provides protection against impacts from any spatial direction, but it is advantageous or necessary to take such other protective measures. There may even be.

  One (other) part of the shock damping mechanism can still be formed by a separate member or group of structures, or it can be integral with the enclosure and / or attached to the screw coupling of the shock damping mechanism. It can also be formed integrally with the part.

  Preferably, a spacer is provided between the instrument and a part of the impact damping mechanism on the side of the instrument opposite to the bottom or the screw coupling portion.

  Such a spacer provides a space for receiving the instrument between the individual parts of the impact damping mechanism. This space is maintained, for example, when one part or one structure group of the impact damping mechanism is subjected to a compressive load. Such a compressive load (preload) may be significant in improving the sealing performance of the instrument.

  In order to increase the measurement accuracy / reading accuracy, according to the present invention, a mechanism for preventing the spacer from rotating with respect to the instrument is provided.

  For the same reason, according to the present invention, a mechanism for preventing the rotation of the reading scale with respect to the spacer is more preferably provided.

  By this rotation prevention mechanism, the rotation of the reading scale is also prevented with reference to the instrument, and the measurement accuracy and the reading accuracy are maintained.

  Preferably according to the invention, at least one part of said impact damping mechanism has a hardness of Shore A 40 ° to 80 °.

Finally, at least one part of the impact damping mechanism comprises one or more of the following materials:
-Synthetic rubber, preferably nitrile butadiene rubber (NBR),
-Terpolymer elastomer (rubber), preferably ethylene propylene diene rubber (EPDM),
-silicone.

  When the pressure measuring device constructed according to the present invention is suitably designed for both dimensions and hardness, impact resistance against free fall from a height of up to 1.5 m is achieved.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and other details based on preferred embodiments.

It is a general | schematic expanded sectional view of the components of the blood-pressure measuring device by preferable one Embodiment of this invention. Another embodiment of the present invention is shown in the same view as FIG. Yet another embodiment of the present invention is shown in the same view as FIGS. Yet another embodiment of the present invention is shown in the same view as FIGS.

  Attached to the blood pressure measuring device of FIG. 1 are an instrument 10, an enclosure 12 for an instrument edge 14, a damper 14, a housing 16 and a threaded insert 18. The enclosure 12 has an introduction ramp 20 to facilitate introduction of the instrument 10 into the enclosure 12. A protrusion 22 with a male screw 24 is attached to the instrument 10. The threaded insert 18 has a corresponding female thread 26. A protrusion 30 with an undercut 32 is attached to the bottom 28 of the housing 16. In the assembled state, the threaded insert 18 pushes the bead 34 into the undercut 32, and the damper 14 is held by the housing 16 in a shape joining manner.

  The blood pressure measuring device of FIG. 2 is constructed substantially the same as that of FIG. 1, i.e. has a damper 14 with a threaded insert 18 and an enclosure 12. However, in addition, a damper 40 supported by the damper 14 via the scale disk 36, the spacer 38 and the instrument 10 is provided. The damper 40 is pushed down in FIG. 2 by the fixing ring 44 through the transparent plastic disk 42 by screwing the fixing ring 44 to the housing 16. For this reason, the fixing ring 44 is provided with a female screw (not shown), while the housing 16 has a male screw (not shown).

  Therefore, the preload acting on the dampers 14 and 40 and the enclosure 12 contributes to the sealing of the blood pressure measuring device.

  The embodiment of FIG. 3 is substantially consistent with the embodiment of FIG. 2, but does not have a damper 14 with a threaded insert 18. Therefore, the protrusion 22 is not provided in the meter. Thus, in the embodiment of FIG. 3, only the damper 40 and the enclosure 12 serve to prevent and seal the impact.

  In the embodiment shown in FIG. 4, the enclosure 12 is integrated with the damper 14. An appreciable passage 46 serves to supply the instrument 10 with air whose pressure must be measured. A passage 48 forming an extension of the passage 46 communicates with the interior of the threaded insert 18. Although not shown in the drawings, the instrument has other passages that couple the instrument to passages 48 or 46.

  2 and 3, the scale disc 36 is provided with a rotation preventing mechanism 50 in the form of a protruding portion, and this protruding portion engages in a corresponding groove (not shown) of the spacer 38. Reference numeral 51 denotes a rotation preventing mechanism disposed in the spacer 38.

  Still other anti-rotation mechanisms are provided, but they are not shown. The surfaces of the enclosure 12, the damper 14 and the damper 40 are each provided with a corrugated step surface, and thus the members (housing 16, instrument 10, spacer 38 and / or threaded insert 18) which respectively abut against these surfaces are rotated. Movement is prevented.

  The features of the invention disclosed in the above specification, claims and drawings may be essential to the implementation of the invention in various embodiments, either individually or in any combination.

Claims (22)

  In a pressure measuring device including a meter (10) and an impact damping mechanism (12, 14, 40), particularly a blood pressure measuring device, a screw coupling portion (24, 26) for connecting the meter to the impact damping mechanism is provided. A pressure measuring device.   The instrument (10) and / or the impact damping mechanism (12, 14, 40) has one hole, and the female screw (26) of the screw coupling portion (24, 26) is disposed in the hole. The pressure measuring device according to claim 1, wherein:   The impact damping mechanism (12, 14, 40) and / or the instrument (10) has one protrusion (22), and the external thread (24) of the screw coupling part (24, 26) is formed in the protrusion. The pressure measuring device according to claim 1, wherein the pressure measuring device is arranged.   The preceding claim, characterized in that the internal thread and / or external thread of the screw connection (24, 26) is formed integrally with the instrument (10) or the impact damping mechanism (12, 14, 40). The pressure measuring device according to any one of claims.   A pressure measuring device according to any one of the preceding claims, characterized in that the female thread (26) of the threaded connection (24, 26) is formed in a threaded insert (18).   The housing (16) and the threaded insert (18) push the protrusion (34) of the impact damping mechanism (12, 14, 40) into the undercut (32) of the housing. Item 6. The pressure measuring device according to Item 5.   A pressure measuring device according to any one of the preceding claims, characterized in that the housing (16) and the impact damping mechanism (12, 14, 40) are secured to the housing.   Any of the preceding claims, characterized in that the internal thread (26) of the threaded connection is attached to the inner wall of the passage (48) and the instrument (10) is connected to the outside through the passage. The pressure measuring device according to claim 1.   The pressure measuring device according to any one of the preceding claims, characterized by a mechanism for preventing rotation of the instrument (10) with respect to the impact damping mechanism.   The pressure measuring device according to claim 9, wherein the rotation preventing mechanism has a deformed portion.   A pressure measuring device according to any one of the preceding claims, particularly comprising an instrument (10) and an impact damping mechanism (12, 14, 40), wherein the impact damping mechanism is located on the bottom (28) side of the instrument or A pressure measuring device comprising an enclosure (12) of an instrument edge (14) on the side of the screw connection (24, 26).   12. Pressure measuring device according to claim 11, characterized in that the enclosure (12) surrounds the instrument (10) along the edge (14).   13. A pressure measuring device according to claim 11 or 12, characterized in that the introduction slope (20) of the enclosure (12).   The pressure measuring device according to any one of claims 11 to 13, characterized by a mechanism for preventing the instrument (10) from rotating with respect to the enclosure (12). The pressure measuring device according to claim 14, wherein the rotation preventing mechanism has a deformed portion.   16. Pressure measuring device according to any one of claims 11 to 15, characterized in that the housing (16) and the enclosure (12) are secured to the housing.   One part (12, 14) of the impact damping mechanism (12, 14, 40) is on the opposite side of the instrument (10) from the bottom (28) or the screw connection (24, 26). The pressure measuring device according to any one of the preceding claims, characterized in that:   A spacer (10) between the instrument (10) and the part of the shock damping mechanism (12, 14, 40) on the side of the instrument opposite to the bottom (28) or the screw coupling (24, 26) ( 38) The pressure measuring device according to claim 17.   19. Pressure measuring device according to claim 18, characterized in that it comprises a mechanism (51) for preventing rotation of the spacer (38) with respect to the instrument (10).   The pressure measuring device according to any one of claims 17 to 19, characterized by a mechanism (50) for preventing rotation of the reading scale (36) with respect to the spacer (38).   The pressure measuring device according to any one of the preceding claims, characterized in that at least one component of the impact damping mechanism (12, 14, 40) has a hardness of Shore A 40 ° to 80 °. At least one part of the impact damping mechanism (12, 14, 40) is-synthetic rubber, preferably nitrile butadiene rubber (NBR),
-Terpolymer elastomer (rubber), preferably ethylene propylene diene rubber (EPDM),
-Pressure measuring device according to any one of the preceding claims, characterized in that it comprises one or more of the abovementioned silicones.

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