A midaxillary line positioning device for central venous pressure measurement

Abstract

The utility model relates to a kind of axillary midline positioning device for central venous pressure measurement, including vertical ruler, the bottom of the ruler is provided with fixed axillary rod, the top of the fixed axillary rod is provided with to be used for the up-down adjustment of ruler movable axillary rod, movable axillary rod and fixed axillary rod between the movable clamping block for up-down adjustment of ruler are provided with, the movable clamping block is provided with centering instruction line, and the position corresponding with centering instruction line is provided with bayonet, to connect hose. The axillary midline found by the device is more accurate relative to visual method, which is beneficial to improve the accuracy of central venous pressure measurement.

Description

Technical Field

[0001] This utility model relates to a midaxillary line positioning device for central venous pressure measurement. Background Technology

[0002] Central venous pressure (CVP) refers to the pressure in the right atrium and the thoracic segments of the superior and inferior vena cava. It can assess a patient's overall blood volume, cardiac function, and vascular tone, and is distinct from peripheral venous pressure.

[0003] When measuring central venous pressure, it is necessary to locate the midaxillary line. In current technology, medical staff generally use visual estimation, which has the problem of inaccurate midaxillary line location.

[0004] To address the above technical issues, this paper proposes a midaxillary line positioning device for central venous pressure measurement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a midaxillary line positioning device for central venous pressure measurement.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: an axillary midline positioning device for central venous pressure measurement, including a vertical ruler, a fixed axillary bar at the bottom of the ruler, a movable axillary bar for raising and lowering adjustment on the ruler directly above the fixed axillary bar, a movable locking block for raising and lowering adjustment on the ruler between the movable axillary bar and the fixed axillary bar, a centering indicator line on the movable locking block, and a locking slot at the position corresponding to the centering indicator line for locking a flexible tube.

[0007] Preferably, both the fixed armpit bar and the movable armpit bar are straight bars perpendicular to the ruler.

[0008] Preferably, the top surface of the fixed armpit bar is aligned with the zero mark of the ruler.

[0009] Preferably, the movable armpit bar is provided with a first sliding groove, the ruler is fixedly provided with a first slider, the first slider is embedded in the first sliding groove, and the movable armpit bar is screwed with a first wing-shaped set screw.

[0010] Preferably, the movable block is provided with a second sliding groove, the ruler is fixed with a second slider, the second slider is embedded in the second sliding groove, and the movable block is screwed with a second wing-shaped set screw.

[0011] Preferably, the movable block is made of transparent material and covers part of the ruler's scale lines.

[0012] Preferably, the bayonet is a horizontally axially cylindrical shape, and a section of the inferior arc is cut off from the cylindrical bayonet to form a hose connection inlet / outlet on the periphery of the bayonet.

[0013] Preferably, the centering indicator line is horizontally positioned on the inner peripheral wall of the bayonet.

[0014] Preferably, the hose is connected to a central venous pressure measuring device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The axillary midline positioning device for central venous pressure measurement has a simple structure. When in use, the patient lies supine, the medical staff holds the ruler, fixes the axillary bar close to the armpit and places it on the bed, and adjusts the lifting and lowering of the movable axillary bar to align it with the anterior axillary line. At this time, the distance between the movable axillary bar and the fixed axillary bar is indicated by the scale line of the ruler.

[0016] Then adjust the height of the movable locking block so that the centering indicator line of the movable locking block is aligned with the middle position between the movable armpit bar and the fixed armpit bar. At this time, the locking slot is at the armpit centerline position.

[0017] The axillary midline located by this device is more accurate than visual estimation, which helps improve the accuracy of central venous pressure measurement.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the working state of an embodiment of the present utility model.

[0020] Figure 2 A side view of a movable clip with a flexible tube embedded in it.

[0021] Figure 3 This is a front view of an embodiment of the present utility model.

[0022] Figure 4 This is a top view of an embodiment of the present utility model. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] like Figures 1-4 As shown, this embodiment provides an axillary midline positioning device for central venous pressure measurement, including a vertical ruler 1, a fixed axillary bar 2 at the bottom of the ruler, a movable axillary bar 3 for raising and lowering on the ruler directly above the fixed axillary bar, a movable locking block 4 for raising and lowering on the ruler between the movable axillary bar and the fixed axillary bar, an alignment indicator line 5 on the movable locking block, and a locking slot 6 at a position corresponding to the alignment indicator line for locking a transparent flexible tube 7.

[0027] In this embodiment of the invention, both the fixed armpit bar and the movable armpit bar are straight bars perpendicular to the ruler.

[0028] In this embodiment of the invention, the top surface of the fixed armpit bar is aligned with the zero mark of the ruler.

[0029] In this embodiment of the utility model, a first sliding groove 8 is provided on the movable armpit bar, a first slider 9 is fixed on the ruler, the first slider is embedded in the first sliding groove, and a first wing-shaped set screw 10 is screwed onto the movable armpit bar.

[0030] Tighten the first wing set screw. The first wing set screw will press against the ruler, and the movable armhole bar will not be able to move up or down. Loosen the first wing set screw, and the movable armhole bar can be moved up or down.

[0031] In this embodiment of the utility model, the movable block is provided with a second sliding groove 11, the ruler is fixed with a second slider 12, the second slider is embedded in the second sliding groove, and the movable block is screwed with a second wing-shaped set screw 13.

[0032] Tighten the second wing-shaped set screw. The second wing-shaped set screw will press against the ruler, and the movable block will not be able to move up or down. Loosen the second wing-shaped set screw, and the movable block can move up and down.

[0033] In this embodiment of the invention, the movable card is made of transparent material and covers part of the scale line of the ruler. The value of the scale line can be read through the transparent movable card.

[0034] In this embodiment of the invention, the bayonet is a horizontally axially cylindrical shape, and a section of inferior arc is cut off from the periphery of the cylindrical bayonet to form a hose connection inlet / outlet on the periphery of the bayonet.

[0035] In this embodiment of the invention, the centering indicator line is horizontally disposed on the inner peripheral wall of the bayonet.

[0036] In this embodiment of the invention, the flexible tube is connected to a central venous pressure measuring mechanism.

[0037] In this embodiment of the invention, the central venous pressure measuring mechanism includes a syringe 14 and a transparent L-shaped tube 15, wherein the L-shaped tube is made of the same material as the syringe.

[0038] In this embodiment of the utility model, the injection port of the syringe is inserted into the top end of the L-shaped tube, the vertical section of the L-shaped tube is provided with a scale, the bottom end of the L-shaped tube is connected to a flexible tube, and the other end of the flexible tube is covered with a sealing cap 16.

[0039] In this embodiment of the utility model, the working principle of the axillary midline positioning device for central venous pressure measurement is as follows: when in use, the patient lies supine, one of the medical staff holds the ruler, fixes the axillary bar close to the armpit and places it on the bed, and adjusts the lifting and lowering of the movable axillary bar to align it with the anterior axillary line. At this time, the distance between the movable axillary bar and the fixed axillary bar is indicated by the scale line of the ruler.

[0040] Then adjust the height of the movable locking block so that the centering indicator line of the movable locking block is aligned with the middle position between the movable armpit bar and the fixed armpit bar. At this time, the locking slot is at the armpit centerline position.

[0041] Another medical staff member operates the central venous pressure measuring device. The syringe, L-shaped tube, and flexible tubing are connected together, and the flexible tubing is inserted into the clamp located at the mid-axillary line. The sealing cap is then removed. The syringe, filled with normal saline, is used to vent the pressure measuring device. Then, the other end of the flexible tubing is inserted into the connecting tube of the deep vein in the patient's neck. The syringe is then removed, and the level of normal saline in the L-shaped tube drops until it stabilizes, thus measuring the patient's central venous pressure.

[0042] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A mid-axillary line positioning device for central venous pressure measurement, characterized in that: The device includes a vertical ruler with a fixed armhole at its bottom and a movable armhole for height adjustment on the ruler directly above the fixed armhole. A movable locking block for height adjustment on the ruler is provided between the movable armhole and the fixed armhole. The movable locking block has an alignment indicator line and a locking slot at a position corresponding to the alignment indicator line for engaging a flexible tube.

2. The axillary midline positioning device for central venous pressure measurement according to claim 1, characterized in that: Both the fixed armhole bar and the movable armhole bar are straight bars perpendicular to the ruler.

3. The axillary midline positioning device for central venous pressure measurement according to claim 1, characterized in that: The top surface of the fixed armpit bar is aligned with the zero mark of the ruler.

4. The axillary midline positioning device for central venous pressure measurement according to claim 1, characterized in that: The movable armpit bar is provided with a first sliding groove, and the ruler is fixed with a first slider. The first slider is embedded in the first sliding groove, and the movable armpit bar is screwed with a first wing-shaped set screw.

5. The axillary midline positioning device for central venous pressure measurement according to claim 1, characterized in that: The movable block is provided with a second sliding groove, the ruler is fixed with a second slider, the second slider is embedded in the second sliding groove, and the movable block is screwed with a second wing-shaped set screw.

6. The axillary midline positioning device for central venous pressure measurement according to claim 1, characterized in that: The movable card is made of transparent material and covers part of the ruler's scale lines.

7. The axillary midline positioning device for central venous pressure measurement according to claim 6, characterized in that: The bayonet is a horizontally axially cylindrical shape, and a section of the inferior arc is cut off from the cylindrical bayonet to form a hose connection inlet and outlet on the periphery of the bayonet.

8. The axillary midline positioning device for central venous pressure measurement according to claim 7, characterized in that: The centering indicator line is horizontally set on the inner circumferential wall of the bayonet.

9. The axillary midline positioning device for central venous pressure measurement according to claim 1, characterized in that: The hose is connected to the central venous pressure measuring device.

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