A measuring scale for facilitating accurate measurement of central venous pressure

Abstract

The utility model discloses a measuring scale convenient to accurate measurement central venous pressure, the back of measuring scale main part is connected with fixed assembly, the fixed assembly includes the fixed base of setting on the back end surface of measuring scale main part and the first connecting part and the second connecting part of setting respectively on the both sides side edge of fixed base, measuring scale main part can be fixed on the bedside guardrail and infusion support through fixed assembly, and the first connecting part and the second connecting part are bound fixed, and measuring scale is kept horizontal state fixed, and the measuring data will not be influenced because of the deviation, and the user will be in the state of keeping the measuring scale fixed and horizontal when using, and the measuring scale body is made to slide up and down along the sliding groove through the control slider control, so that the ruler is aligned with the heart position of patient, avoids the situation that the ruler is not aligned with the heart position of patient after fixing, and needs to be fixed after alignment.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a measuring ruler that facilitates accurate measurement of central venous pressure. Background Technology

[0002] When measuring central venous pressure, the hydrograph should generally be aligned with the patient's heart position. This position usually corresponds to the level of the fourth intercostal space along the midaxillary line when the patient is lying supine. This is because the measurement value of central venous pressure is affected by the patient's heart position. Only when the hydrograph is aligned with the heart position can the central venous pressure be measured accurately. If the hydrograph is not aligned with the heart position, it may lead to inaccurate measurement results, which may affect subsequent treatment and evaluation.

[0003] Existing central venous pressure measuring rulers are usually fixed to the infusion rod with rubber bands at both ends. Using rubber bands to fix the measuring ruler is very unstable during measurement and the installation and disassembly steps are relatively troublesome. At the same time, it is necessary to ensure that the measuring ruler is in a horizontal position during measurement. Using rubber bands makes it difficult to ensure that the measuring ruler is in a horizontal position, causing the infusion rod to tilt during measurement and affecting the measurement data. Utility Model Content

[0004] To address the technical deficiencies in the prior art, this utility model proposes a measuring ruler for accurate measurement of central venous pressure, solving the aforementioned technical problems and meeting practical needs. The specific technical solution is as follows: A measuring ruler for accurate measurement of central venous pressure includes a measuring ruler body. The front end face of the measuring ruler body has an embedding groove extending along its length. A scale line is provided on one side of the embedding groove, and a scale is provided corresponding to the origin of the scale line. A fixing assembly is connected to the back of the measuring ruler body. The fixing assembly includes a fixing base disposed on the back end face of the measuring ruler body and a first connecting part and a second connecting part respectively disposed on both sides of the fixing base. A sliding part protruding towards the fixing base is provided on the back end face of the measuring ruler body. A sliding groove is provided on the end face of the fixing base facing the measuring ruler body at a position corresponding to the sliding part. A driving assembly is provided on one side of the fixing base to drive the sliding part to slide linearly along the sliding groove.

[0005] As an improvement to the above solution, the sliding part includes a sliding bar and a first rack fixed on the sliding bar. The back of the first rack is fixed to the side of the sliding bar. Both the sliding bar and the first rack are driven to slide along the length direction of the sliding groove by a driving assembly.

[0006] As an improvement to the above solution, the cross-sectional groove shape of the sliding groove matches the cross-sectional shape of the sliding part. The fixed base has a circular first chamber on one side corresponding to the sliding groove, and a strip-shaped second chamber on the side of the first chamber away from the sliding groove.

[0007] As an improvement to the above solution, the drive assembly includes a rotating gear disposed in the first chamber and a second rack disposed in the second chamber. The outer edge of the rotating gear partially overlaps with the sliding groove and the second chamber. The tooth surfaces of the first rack and the second rack both mesh with the rotating gear.

[0008] As an improvement to the above solution, the second rack is movably connected to the fixed base along the length of the second chamber. The fixed base has a slot on one end face corresponding to the back side of the second rack, and the back side of the second rack has a control slider extending toward the slot.

[0009] As an improvement to the above solution, the front end of the measuring ruler body is provided with a hinge seat on the side of the embedded groove away from the scale line, and a truncated cone-shaped fixing block is provided on the other side of the embedded groove at a position aligned with the hinge seat.

[0010] As an improvement to the above solution, the hinge seat is hinged to the main body of the measuring ruler, and the hinge seat is provided with a fixing groove extending along its length direction, and an angle limiting block is fixedly provided on one side adjacent to the hinge seat.

[0011] As an improvement to the above solution, the back end face of the fixed base is provided with an arc-shaped groove, and a first connecting part is provided on one side of the arc-shaped groove. The end of the first connecting part is provided with a loop, and the end of the second connecting part passes through the loop and folds outward. Velcro is provided on the two end faces of the second connecting part that fit together after folding.

[0012] As an improvement to the above solution, the locking assembly includes a threaded hole on the other side of the fixed base and a screw handle that is screwed through the threaded hole, and the back of the second rack is provided with several snap-fit ​​grooves.

[0013] The beneficial effects of this utility model are as follows: the main body of the measuring ruler can be fixed to the bedside railing and infusion stand by the fixing component, and is bound and fixed by the first connecting part and the second connecting part to keep the measuring ruler in a horizontal state. The measurement data will not be affected by the deviation. When using it, after the measuring ruler is fixed in a horizontal state, the user can control the measuring ruler to slide up and down along the sliding groove by moving the control slider so that the ruler is aligned with the patient's heart position, avoiding the situation where it is not aligned with the patient's heart position after fixing and needs to be aligned and fixed again. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the measuring ruler of this utility model.

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0016] Figure 3 for Figure 1 Enlarged schematic diagram of the structure in section A after removing the scale.

[0017] Figure 4 This is a schematic diagram of the internal structure of the fixed base of this utility model.

[0018] Figure 5 This is a schematic diagram of the fixed state structure of the first connecting part and the second connecting part of this utility model.

[0019] The components include: measuring ruler body 1, embedded groove 101, scale line 102, hinge seat 103, fixing block 104, fixing groove 105, angle limiting block 106, scale 2, fixing component 3, fixing base 4, sliding groove 401, first chamber 402, second chamber 403, straight groove 404, arc groove 405, first connecting part 5, loop ring 501, second connecting part 6, Velcro 601, sliding part 7, sliding strip 701, first rack 702, drive component 8, rotating gear 801, second rack 802, control slider 803, locking component 9, threaded hole 901, screw handle 902, and snap-fit ​​groove 903. Detailed Implementation

[0020] The embodiments of this utility model will be described below with reference to the accompanying drawings and related examples. The embodiments of this utility model are not limited to the following examples, and this utility model relates to relevant necessary components in this technical field, which should be regarded as well-known technology in this technical field and can be known and mastered by those skilled in this technical field.

[0021] like Figure 1As shown, a measuring ruler for accurate measurement of central venous pressure includes a measuring ruler body 1. The front end face of the measuring ruler body 1 is provided with an embedding groove 101 extending along its length direction. A scale line 102 is provided on one side of the embedding groove 101. A scale 2 is provided at the origin position of the scale line 102. A fixing component 3 is connected to the back of the measuring ruler body 1. The fixing component 3 includes a fixing base 4 disposed on the back end face of the measuring ruler body 1 and a first connecting part 5 and a second connecting part 6 respectively disposed on the two sides of the fixing base 4. A sliding part 7 protruding towards the fixing base 4 is provided on the back end face of the measuring ruler body 1. A sliding groove 401 is provided on the end face of the fixing base 4 facing the measuring ruler body 1 at the position corresponding to the sliding part 7. A driving component 8 is provided on one side of the fixing base 4 to drive the sliding part 7 to slide linearly along the sliding groove 401.

[0022] like Figure 1 Figure 4 and Figure 5 As shown, in terms of structure, the measuring ruler body 1 has a fixing component 3 at its rear. The fixing component 3 is fixed to a vertical bedside rail or a vertical infusion stand via a first connecting part 5 and a second connecting part 6. The back of the measuring ruler body 1 has a sliding strip 701. The fixing component 3 has a sliding groove 401 corresponding to the sliding strip 701 on the back of the measuring ruler body 1. The measuring ruler body 1 moves synchronously by driving the sliding strip 701 to reciprocate along the length of the sliding groove 401 via a driving component 8. After the measuring ruler is fixed, the measuring ruler body 1 is moved up and down by the driving component 8 to align the ruler 2 with the patient's heart position.

[0023] like Figure 4 As shown, further, in the above solution, the sliding part 7 includes a sliding bar 701 and a first rack 702 fixed on the sliding bar 701. The back of the first rack 702 is fixed to the side of the sliding bar 701. Both the sliding bar 701 and the first rack 702 are driven to slide along the length direction of the sliding groove 401 by the driving assembly 8. The driving assembly 8 meshes with the first rack 702 on the side of the sliding bar 701 and drives the sliding bar 701 to reciprocate along the length direction of the sliding groove 401 through gear and rack transmission.

[0024] like Figure 5 As shown, further, in the above scheme, the cross-sectional groove shape of the sliding groove 401 matches the cross-sectional shape of the sliding part 7. The fixed base 4 has a circular first chamber 402 on one side corresponding to the sliding groove 401, and a strip-shaped second chamber 403 on the side of the first chamber 402 away from the sliding groove 401.

[0025] Furthermore, in the above scheme, the drive assembly 8 includes a rotating gear 801 disposed in the first chamber 402 and a second rack 802 disposed in the second chamber 403. The outer edge of the rotating gear 801 partially overlaps with the sliding groove 401 and the second chamber 403. The tooth surfaces of the first rack 702 and the second rack 802 both mesh with the rotating gear 801.

[0026] like Figure 4 As shown, it should be noted that the rotating gear 801 is disposed in the first chamber 402, and the outer edge of the rotating gear 801 is meshed with the first rack 702 on the sliding bar 701. The rotating gear 801 drives the sliding bar 701 to move the measuring ruler body 1 back and forth along the length direction of the sliding groove 401 by rotating the sliding gear 701. The first chamber 402 is provided with a second chamber 403 on the other side away from the sliding groove 401. The second chamber 403 is provided with a second rack 802. The second rack 802 meshes with the rotating gear 801. By sliding the second rack 802, the first rack 702 meshing with the rotating gear 801 is driven to slide synchronously in the opposite direction. The sliding of the first rack 702 drives the measuring ruler body 1 to slide back and forth, so that the scale 2 is aligned with the patient's heart position.

[0027] like Figure 4 As shown, further, in the above scheme, the second rack 802 is movably connected to the fixed base 4 along the length direction of the second chamber 403. The fixed base 4 has a slot 404 on the end face corresponding to the back side of the second rack 802. The back side of the second rack 802 has a control slider 803 extending towards the slot 404. The control slider 803 extends out of the side of the fixed base 4. After the medical staff fixes the measuring ruler body 1 in a general position by fixing the fixing component 3, they slide the control slider 803 along the length direction of the slot 404, so that the second rack 802 moves linearly along the length direction of the second chamber 403. The linear movement of the second rack 802 drives the rotating gear 801 to rotate axially. The axial rotation of the rotating gear 801 drives the first rack 702 to rotate linearly. Simultaneously, the sliding part 7 is controlled to reciprocate along the sliding groove 401, so as to realize the fine adjustment of the height of the measuring ruler body 1, which makes it convenient for the medical staff to align the ruler 2 with the patient's heart position.

[0028] like Figure 1 , Figure 2 and Figure 3As shown, further, in the above scheme, the front end face of the measuring ruler body 1 is provided with a hinge seat 103 on the side of the embedded groove 101 away from the scale line 102, and a fixed rubber block 104 in the shape of a frustum is provided on the other side of the embedded groove 101 at the position aligned with the hinge seat 103.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, further, in the above scheme, the hinge seat 103 is hinged to the measuring ruler body 1, the hinge seat 103 is provided with a fixing groove 105 extending along its length direction, and an angle limiting block 106 is fixedly provided on one side adjacent to the hinge seat 103.

[0030] like Figure 2 , Figure 3 and Figure 4 As shown, it should be noted that the scale 2 and the measuring scale body 1 are detachable. The bottom end of the scale 2 has a round hole. When using it, medical staff fix the measuring scale body 1 to the bedside railing or infusion stand, rotate the hinge seat 103 clockwise 90° until it fits the angle limiting block 106, and then snap the round hole on the scale 2 into the fixing block 104. The scale body of the scale 2 is snapped into the fixing groove 105. The height of the measuring scale body 1 is adjusted by adjusting the position of the control slider 803 so that the scale 2 is aligned with the level of the fourth intercostal space of the midaxillary line when the patient is lying flat, which can accurately measure the central venous pressure.

[0031] like Figure 4 As shown, further, in the above solution, the back end face of the fixed base 4 is provided with an arc-shaped groove 405, one side of the arc-shaped groove 405 is provided with a first connecting part 5, the end of the first connecting part 5 is provided with a loop 501, the end of the second connecting part 6 passes through the loop 501 and folds outward, and the two end faces of the second connecting part 6 after folding and fitting together are provided with Velcro 601.

[0032] It should be noted that the arc-shaped groove 405 on the fixed base 4 can fit against the vertical guardrail or infusion stand of the bed. The first connecting part 5 and the second connecting part 6 are used to fix the fixed base 4 and the guardrail. Each fixed base 4 is provided with at least two pairs of first connecting parts 5 and second connecting parts 6. In use, the arc-shaped groove 405 on the fixed base 4 fits against the guardrail. The end of the second connecting part 6 passes through the loop 501 at the end of the first connecting part 5 and is then folded over and fixed by Velcro 601.

[0033] Furthermore, in the above scheme, after adjusting the horizontal height of the measuring ruler body 1 by moving the control slider 803, the locking component 9 is used to lock the second rack, thereby fixing the height of the measuring ruler body 1. The locking component 9 includes a threaded hole 901 on the other side of the fixed base 4 and a screw handle 902 that is screwed into the threaded hole 901. The back of the second rack 802 is provided with several locking grooves 903. When it is necessary to fix the horizontal height of the measuring ruler body 1, the screw handle 902 is screwed so that the front end of the screw handle 902 extends into the locking grooves 903 on the back of the second rack 802, thereby fixing the measuring ruler body 1. When it is necessary to reset the measuring ruler body 1, the screw handle 902 is rotated so that its end disengages from the locking grooves 903, thereby pushing the measuring ruler body 1 to reset.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A measuring ruler for easy and accurate measurement of central venous pressure, characterized in that, The measuring ruler includes a main body (1), the front end face of which is provided with an insert groove (101) extending along its length direction, a scale line (102) is provided on one side of the insert groove (101), and a scale (2) is provided at the origin position of the scale line (102). A fixing component (3) is connected to the back of the measuring ruler (1), the fixing component (3) including a fixing base (4) provided on the back end face of the measuring ruler (1) and first connecting parts respectively provided on both sides of the fixing base (4). 5) With the second connecting part (6), the back end face of the measuring ruler body (1) is provided with a sliding part (7) protruding towards the fixed base (4). The end face of the fixed base (4) facing the measuring ruler body (1) is provided with a sliding groove (401) corresponding to the sliding part (7). One side of the fixed base (4) is provided with a driving component (8) that drives the sliding part (7) to slide linearly along the sliding groove (401). The other side of the fixed base (4) is provided with a locking component (9) that is adapted to the driving component (8).

2. The measuring ruler for accurately measuring central venous pressure according to claim 1, characterized in that, The sliding part (7) includes a sliding bar (701) and a first rack (702) fixed on the sliding bar (701). The back of the first rack (702) is fixed to the side of the sliding bar (701). The sliding bar (701) and the first rack (702) are both driven by the driving assembly (8) to slide along the length direction of the sliding groove (401).

3. The measuring ruler for accurately measuring central venous pressure according to claim 2, characterized in that, The cross-sectional groove shape of the sliding groove (401) matches the cross-sectional shape of the sliding part (7). The fixed base (4) has a circular first chamber (402) on one side corresponding to the sliding groove (401), and a strip-shaped second chamber (403) on the side of the first chamber (402) away from the sliding groove (401).

4. The measuring ruler for accurately measuring central venous pressure according to claim 3, characterized in that, The drive assembly (8) includes a rotating gear (801) disposed in the first chamber (402) and a second rack (802) disposed in the second chamber (403). The outer edge of the rotating gear (801) partially overlaps with the sliding groove (401) and the second chamber (403). The tooth surfaces of the first rack (702) and the second rack (802) both mesh with the rotating gear (801).

5. The measuring ruler for accurately measuring central venous pressure according to claim 4, characterized in that, The second rack (802) is movably connected to the fixed base (4) along the length direction of the second chamber (403). The fixed base (4) has a slot (404) on the end face of the side corresponding to the back of the second rack (802). The back of the second rack (802) is provided with a control slider (803) extending toward the slot (404).

6. The measuring ruler for accurately measuring central venous pressure according to claim 1, characterized in that, The front end of the measuring ruler body (1) is provided with a hinge seat (103) on the side of the embedded groove (101) away from the scale line (102), and a fixed rubber block (104) in the shape of a frustum is provided on the other side of the embedded groove (101) at a position aligned with the hinge seat (103).

7. The measuring ruler for accurately measuring central venous pressure according to claim 6, characterized in that, The hinge seat (103) is hinged to the measuring ruler body (1). The hinge seat (103) is provided with a fixing groove (105) extending along its length direction. An angle limiting block (106) is fixedly provided on one side adjacent to the hinge seat (103).

8. The measuring ruler for accurately measuring central venous pressure according to claim 1, characterized in that, The back end face of the fixed base (4) is provided with an arc-shaped groove (405). A first connecting part (5) is provided on one side of the arc-shaped groove (405). A loop (501) is provided at the end of the first connecting part (5). The end of the second connecting part (6) passes through the loop (501) and folds outward. Velcro (601) is provided on the two end faces of the second connecting part (6) after folding and fitting together.

9. The measuring ruler for accurately measuring central venous pressure according to claim 4, characterized in that, The locking assembly (9) includes a threaded hole (901) on the other side of the fixed base (4) and a screw handle (902) that is screwed through the threaded hole (901). The back of the second rack (802) is provided with several snap-fit ​​grooves (903).

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