CN211022627U

CN211022627U - Instrument of measurement central venous pressure of quick location zero point position

Info

Publication number: CN211022627U
Application number: CN201921084310.0U
Authority: CN
Inventors: 孙于舒; 李秀萍; 李清春
Original assignee: Affiliated Sir Run Run Shaw Hospital of School of Medicine Zhejiang University
Current assignee: Affiliated Sir Run Run Shaw Hospital of School of Medicine Zhejiang University
Priority date: 2018-07-12
Filing date: 2019-07-11
Publication date: 2020-07-17
Anticipated expiration: 2029-07-11
Also published as: CN110464323B; CN110464323A

Abstract

The utility model relates to a tool for measuring central venous pressure for fast positioning zero position, which comprises a clamping component, an equally dividing telescopic component, a clamping plate component and a measuring component; the clamping component, the measuring component and the clamping plate component are respectively connected to the equant telescopic components; the plane at screens subassembly and screens board subassembly place is parallel to screens subassembly and screens board subassembly are located the same one side of equalling divide telescopic component. The utility model is a tool which is used for being clamped on the body of a patient and can quickly position the zero point position and measure the central venous pressure, and the tool can quickly position the zero point position and can accurately position; thereby accurately and rapidly measuring the central venous pressure of the patient. And this instrument alone is operatable, and convenient and fast has shortened measuring time, can also reduce the nursing volume by a wide margin. In addition, the tool is foldable and convenient to carry and place. And the tool has low cost and is easy to popularize and apply.

Description

Instrument of measurement central venous pressure of quick location zero point position

Technical Field

The utility model belongs to medical care auxiliary device relates to a measuring tool of central venous pressure, especially can the independent operation, the position at quick location zero point to convenient, accurate measuring tool of measuring central venous pressure.

Background

The central venous pressure is one of the common clinical operations, is the pressure in the right atrium or the upper and lower vena cava close to the right atrium, can display the actual bearing capacity of the body to the volume load, has excellent prompting function to the insufficiency or the excess of the volume load, the incomplete cardiac function and the like, and can be used for guiding clinical treatment. When measuring the central venous pressure, the central venous catheter is needed to be used, the central venous catheter is used for placing the far end of the central venous catheter at the position, close to the opening of the right atrium, of the superior vena cava through the internal jugular vein or the subclavian vein, and the near end of the venous catheter is used for intravenous infusion and the like. Since the distal end of the central venous catheter is in the right atrium, the central venous pressure is obtained by measuring the pressure. Clinically, central venous pressure is typically measured only for patients who have undergone central venous catheterization. The traditional method for measuring the central venous pressure comprises the following steps: connecting the front end of an extension tube which is not less than 60cm with a tee joint, connecting the front end of the extension tube with the rear end of the extension tube by using an injector, injecting normal saline, connecting the tee joint to the near end of the central venous catheter of a patient after the extension tube and the tee joint are filled with the normal saline, and closing the tee joint. Under the state of the patient lying position, the extension tube close to the three-way part is horizontally arranged at the zero position of the patient, the rest part is bent upwards and is perpendicular to the horizontal line, meanwhile, 0cm of the scale is positioned at the zero position, the extension tube is upwards perpendicular to the horizontal line and is tightly attached to the extension tube, the injector is removed, the three-way is opened, and the physiological saline in the extension tube can flow back into the blood vessel due to pressure difference until the pressure of the physiological saline in the extension tube is equal to the pressure of the central venous pressure. After the liquid level of the physiological saline in the extension tube is stable, the liquid level height of the physiological saline in the extension tube is read through the graduated scale at the end of expiration (namely when the patient exhales soon), and the pressure represented by the liquid level height of the physiological saline at the time is the central venous pressure, and the unit of the pressure is centimeter water column. Wherein the zero point is located at the crossing line of the horizontal plane at 2/3 upward on the back of the patient and the vertical plane between the fourth ribs, and the zero point is usually selected at the crossing point of the crossing line and the outer surface of the human body, or a point on the crossing line adjacent to the outer surface of the human body is selected as the zero point.

There are three problems with this current measurement method: 1. the position 2/3 on the back of the patient and the fourth rib are positioned by the experience of the personnel, the difference of zero point positioning among different operators is large, and the positioning of the zero point position is difficult, so that the measurement of the central venous pressure is inaccurate; 2. this operation is usually performed by two nurses, one for determining the zero position and keeping the extension tube vertical; the other person is responsible for injecting the normal saline, and holds the graduated scale to measure and read, so that the operation is time-consuming and labor-consuming; 3. the extension tube and the graduated scale need to be held by hands in the process, and the reading is inaccurate due to the fact that the extension tube and the graduated scale are easy to be held by hands unstably.

There are currently clinically improved central venous pressure measurement patents, which are mainly classified into three types. The first is to improve a zero point positioning device, such as CN201420105100.6, CN201520262061.5, which does not improve the reading link; the second one improves the reading link during measurement, such as CN201320711564.7, CN201420546298.1, CN201410068279.7, CN201520262061.5, CN201520277534.9, etc., which does not improve the zero point positioning link; the third method is to improve the zero point positioning device and the measurement reading link, such as CN201420105100.6, but needs a pressure converter, a computer, three-channel rotary valves, etc., and the use cost is high.

Therefore, the central venous pressure measuring tool which can conveniently, quickly and accurately position the zero point position, can fix the pressure measuring pipeline, facilitates reading, reduces the workload of nursing and is low in cost is needed at the present stage.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a when solving measurement center venous pressure, can be quick accurate location zero point position to accurate measurement center venous pressure uses manpower sparingly simultaneously, reduces the work load of nursing, provides the instrument of measurement center venous pressure with the quick location zero point of the present measuring tool complete difference.

The utility model discloses a concrete technical scheme as follows:

a tool for measuring central venous pressure for quickly positioning a zero point position comprises a clamping assembly, an equal division telescopic assembly, a clamping plate assembly and a measuring assembly; the clamping component, the measuring component and the clamping plate component are respectively connected to the equant telescopic components; the plane at screens subassembly and screens board subassembly place is parallel to screens subassembly and screens board subassembly are located the same one side of equalling divide telescopic component.

Preferably, the equal division telescopic assembly comprises a plurality of X-shaped scissors forks, a lower cross bar and a lower cross bar; the plurality of X-shaped scissor forks are connected in series and hinged; the lower cross rod is connected to the bottoms of the X-shaped scissors forks which are hinged in series; the upper cross bar is connected to the tops of the X-shaped scissors forks which are hinged in series.

Preferably, the plurality of X-shaped scissor tines is three, or six, or nine X-shaped scissor tines.

Preferably, the upper cross rod and the lower cross rod are provided with strip-shaped concave holes; one end point of the bottom of the X-shaped scissors fork is fixed at one end of the lower cross rod, and the other end point of the bottom of the X-shaped scissors fork is provided with a bulge which is positioned in the strip-shaped concave hole of the lower cross rod and can slide in the strip-shaped concave hole; the top of X-shaped scissors fork and a corresponding extreme point of bottom stiff end are fixed in the one end of last horizontal pole, and another extreme point at the top of X-shaped scissors fork is equipped with the arch, the arch is located the long bar-shaped concave hole of last horizontal pole and can slide in rectangular shape concave hole.

Preferably, the lower cross bar is hingedly connected to the detent plate assembly.

Preferably, the height of the equal division telescopic assembly which can be adjusted at the highest is more than 40cm and is more than the height of the chest cavity of a common human body.

Preferably, the clamping component comprises a first clamping rod; the first clamping rod is vertical to the plane of the X-shaped scissor fork; the first clamping rod is connected to the upper cross rod. Specifically, the first clamping rod is connected to one end of the upper cross rod, on which the X-shaped scissors fork is not fixed.

Preferably, the first clamping rod is movably connected with the upper cross rod, and the first clamping rod can rotate relative to the upper cross rod; the first clamping rod can be folded towards the plane direction of the equal-division telescopic assembly to enable the first clamping rod to be parallel to the upper cross rod. Preferably, the first clamping rod is hinged with the upper cross rod through a nut.

Preferably, the clamping plate assembly comprises two clamping plates; the two clamping plates are hinged. Specifically, two screens boards are articulated through the hinge, and two screens boards rotate through the hinge and can coincide.

Preferably, the lower cross rod of the equal division telescopic assembly is connected to the side edge of one clamping plate; the plane of the equal division telescopic component is vertical to the plane of the clamping plate.

Preferably, the lower cross rod of the equal division telescopic assembly is hinged to the side edge of one clamping plate through a hinge, and the plane where the equal division telescopic assembly is located is perpendicular to the plane where the clamping plate is located.

Preferably, the lower cross bar and the equant telescopic assembly can rotate and fold towards the clamping plate through hinges.

Preferably, the clamping rod and the clamping plate are both positioned on the same side of the X-shaped scissor fork.

Preferably, the measuring assembly comprises a fixed cross bar and a measuring scale; the measuring scale is vertically connected to the fixed cross rod.

Preferably, the fixed cross bar is attached at bottom-to-top 2/3 of the X-shaped scissors fork.

Preferably, when there are three X-shaped scissors, the fixed cross bar is connected to the top of the second X-shaped scissors.

Preferably, when the number of the X-shaped scissors fork is six, the fixed cross bar is connected with the top of the fourth X-shaped scissors fork.

Preferably, when the number of the X-shaped scissors fork is nine, the fixed cross bar is connected with the top of the sixth X-shaped scissors fork.

Preferably, the fixed cross rod is provided with a strip-shaped concave hole; one end of the fixed cross bar is fixed with the end point of the X-shaped scissors fork; the other end of the X-shaped scissors fork is provided with a bulge which is positioned in the elongated concave hole of the fixed cross rod and slides along the elongated concave hole.

Preferably, the measurement scale is a scale in centimeters.

Preferably, a bump is arranged at the 0 scale mark of the measuring scale and is positioned in the elongated concave hole of the fixed cross rod; the projection can slide in the long strip-shaped concave hole.

Preferably, a U-shaped buckle is arranged at the 0 scale mark of the measuring scale.

Preferably, the other positions of the measuring scale and the fixed cross rod are provided with a plurality of U-shaped buckles for fixing the extension pipe.

In other preferred embodiments of the present invention, the halving telescopic assembly comprises a plurality of same movable telescopic bars in an X-shaped structure; the telescopic bars of the same movable X-shaped structure are connected in series end to end.

Preferably, the halving telescopic assembly is formed by connecting a plurality of telescopic bars in an identical movable X-shaped structure in series end to end.

More preferably, the halving telescopic assembly is formed by connecting three or six or nine identical telescopic bars in the movable X-shaped structure in series end to end.

Preferably, the clamping component comprises a first clamping rod and a second clamping rod, wherein the tail end of the second clamping rod is connected with the middle point of the first clamping rod, and the tail end of the second clamping rod and the middle point of the first clamping rod are perpendicular to each other; the two are connected through the movable buckle, and the second clamping rod can be folded towards the end part direction of the first clamping rod to enable the two clamping rods to be arranged side by side.

Preferably, the tail end of the first clamping rod is fixed at the right edge of the top of the equal division telescopic bar, and the plane where the first clamping rod and the second clamping rod are located is perpendicular to the plane where the equal division telescopic bar is located.

Preferably, the first clamping rod is movably connected with the equant telescopic strip, and the first clamping rod can be folded towards the equant telescopic strip to be attached to the equant telescopic strip side by side. The first clamping rod is connected with the equally-divided telescopic strips in a buckling mode.

Preferably, the measuring assembly is composed of a fixing unit for fixing and a measuring unit.

Preferably, the fixing unit is a fixing cross rod with a clamping groove and used for fixing the extension pipe; the fixed cross bar is horizontally fixed at the position 2/3 from bottom to top of the equal division telescopic bar.

Preferably, the measuring unit is a graduated scale perpendicular to the fixing unit and used for reading the central venous pressure value; the edge of the graduated scale is provided with a clamping groove and is also used for fixing the extension pipe.

Preferably, the cross bar and the scale intersect at 0cm of the scale, and the intersection point is at the midpoint of the equal division of the width of the telescopic bar.

Preferably, the detent plate assembly comprises a detent plate; the clamping plate can be folded by 180 degrees along the unidirectional equal division telescopic strip, and the folding position is positioned at the position near 1/2 in the center of the clamping plate.

Preferably, the clamping plate is vertically fixed at the bottom of the equant telescopic strip, and the clamping plate is parallel to the plane of the clamping component and is arranged on the same side of the equant telescopic strip.

Preferably, the connection part of the clamping plate and the equant telescopic strips is a hinge link with a high damping coefficient, and the clamping plate can be folded to be attached to the equant telescopic strips side by side.

Preferably, the hinge link with the higher damping coefficient is a living hinge.

The utility model discloses in, the high more than or equal to patient's thorax front and back footpath with adjustable the flexible subassembly of partition equally, according to human numerical value, the height with adjustable the flexible subassembly of partition equally is between 15 ~ 60 cm. Screens board subassembly width more than or equal to patient's thorax is footpath about, according to human numerical value, preferably, screens board subassembly width is between 23 ~ 53 cm. Specifically, the width of two clamping plates forming the clamping plate component is 15-30 cm.

The utility model discloses in, folding screens subassembly, the flexible subassembly of partition, screens board subassembly, all can be folding after using, conveniently carry and place.

In the utility model, the clamping component and the clamping plate component can use polyvinyl chloride resin, thereby ensuring the comfort of the patient; the equal division telescopic assembly and the measuring assembly can adopt aluminum alloy materials and can ensure the utility model discloses a durability and structural stability to guarantee the measuring accuracy.

Advantageous effects

The utility model can quickly locate the zero point and measure the central venous pressure, and can accurately locate; thereby accurately and rapidly measuring the central venous pressure of the patient. And this instrument alone is operatable, and convenient and fast has shortened measuring time, can also reduce the nursing volume by a wide margin. In addition, the tool is foldable and convenient to carry and place. And the tool has low cost and is easy to popularize and apply.

Drawings

Fig. 1 is a schematic structural diagram of a tool for measuring central venous pressure for rapidly locating a zero point position according to the present invention;

FIG. 2 is a schematic view of the tool of FIG. 1 in a stowed condition for measuring central venous pressure at the fast positioning zero position;

FIG. 3 is a schematic view of the tool of FIG. 1 in a anthropometric state;

fig. 4 is a schematic structural diagram of another tool for measuring central venous pressure for rapidly locating a zero point position according to the present invention;

FIG. 5 is another state diagram of the another tool for measuring central venous pressure of the fast positioning zero position of FIG. 4;

FIG. 6 is another state diagram of the another tool for measuring central venous pressure of the fast positioning zero position of FIG. 4;

FIG. 7 is another state diagram of the another tool for measuring central venous pressure of the fast positioning zero position of FIG. 4;

FIG. 8 is a schematic view of the alternative rapid zero location central venous pressure measurement tool of FIG. 4 in an anthropometric state;

fig. 9 is a schematic diagram of a transverse section of the tool for measuring central venous pressure for fast positioning the zero point position of the present invention in a human body measurement state.

Reference numerals

100-a tool for measuring central venous pressure for fast zero point positioning, 200-another tool for measuring central venous pressure for fast zero point positioning of the present invention, 11, 21-a first clamping strip, 12-a second clamping strip, 001-a zero point position mark point, 002-a middle point of the second clamping strip, 2, 22-a clamping plate, 3-an equal division telescopic strip, 23-an X-shaped scissors fork, 41, 24-a fixed cross bar of a measuring component, 42, 25-a scale of the measuring component, 45, 27-0 scale marks, 43-an upper clamping groove of the fixing unit, 26-a U-shaped buckle, 44-an upper clamping groove of the measuring unit, 10-a human body, 28-an upper cross bar, 281-one end of the upper cross bar, 282-the other end of the upper cross bar, 29-a lower cross bar, 291-one end of a lower cross bar, 231-one end point of the bottom of an X-shaped scissor fork, 232-the other end point of the bottom of the X-shaped scissor fork, 233-one end point of the top of the X-shaped scissor fork, 234-the other end point of the top of the X-shaped scissor fork, 51-elongated concave holes of the upper cross bar and the lower cross bar, 52-elongated concave holes of a fixed cross bar, 53-protrusions on the end points of the X-shaped scissor fork, 54-protrusions, 55-hinges, 56-nuts, 57-screws, and 101-a cross line of a vertical plane between a horizontal plane at the position where the back of a patient faces upward 2/3 and a fourth rib.

Detailed Description

The embodiments described in this specification are merely illustrative of implementations of the inventive concept and should not be considered as limiting the scope of the invention to the specific forms set forth in the embodiments but rather as being based on the equivalent technical measures which can be conceived by one skilled in the art from the inventive concept.

As shown in fig. 1-9, the utility model discloses a tool for measuring central venous pressure of quick location zero point position comprises four bibliographic categories, promptly screens subassembly, measuring component, the flexible subassembly of partition and screens board subassembly. Wherein, screens subassembly, measuring component and screens board subassembly are connected respectively and are equallyd divide the flexible subassembly to, the plane parallel at screens subassembly and screens board subassembly place, and screens subassembly and screens board subassembly lie in equallyd divide the flexible subassembly with one side. The clamping assembly is used for clamping the lower part of the thoracic cavity of a human body and is used for measuring the height of the thoracic cavity together with the clamping assembly; the measuring assembly is used for positioning a zero point position, fixing an extension tube for measuring the central venous pressure and assisting in measuring and reading the central venous pressure; the clamping plate component is fixed on the back of the human body and is used for measuring the height of the thoracic cavity together with the clamping component above the human body; the halving telescopic assembly is used for adjusting the height so as to be capable of clamping the clamping assembly and the measuring assembly to the position needing to be measured, and meanwhile, the height of the chest of the human body is halved and halved. Specifically, the clamping component and the measuring component are respectively and movably connected to the equant telescopic component; when the tool is not in use, the equant telescopic component can rotate and fold towards the clamping plate component, and the clamping component can fold towards the equant telescopic component, so that the whole tool is folded to reduce the occupied space, as shown in fig. 2 and 4.

As shown in fig. 9, the intersection 101 of the horizontal plane at 2/3 and the vertical plane at the fourth intercostal position is shown with the zero position at one point on the intersection. The zero point position is usually selected at the intersection of the cross line and the outer surface of the human body, or a point 001 on the cross line adjacent to the outer surface of the human body is selected as the zero point position. The utility model discloses a position of 2/3 department position and fourth rib that the patient is from back upwards can be definitely confirmed to the instrument to can be fast accurate definite zero point position.

In one embodiment of the present invention, as shown in fig. 1-3, the halving telescopic bars 3 are composed of a plurality of telescopic bars of the same movable X-shaped structure connected in series end to end. In a particular embodiment, the halved telescopic bars 3 are composed of three identical telescopic bars of movable X-shaped structure connected in series end to end. The height of the halving telescopic strip 3 is more than or equal to the thickness of the chest of the patient.

As shown in fig. 1-3, the locking assembly includes a first locking rod 11 and a second locking rod 12, wherein the tail end of the second locking rod 12 is connected to the middle point of the first locking rod 11, and the two are perpendicular to each other; the two are connected through movable buckles or hinges, and the second clamping rod 12 can be folded towards the end part of the first clamping rod 11 to enable the two clamping

rods

11 and 12 to be arranged side by side. Moreover, the tail end of the first position clamping rod 11 is fixed at the right edge of the top of the equant telescopic bar 3, and the plane of the first position clamping rod 11 and the plane of the second position clamping rod 12 are perpendicular to the plane of the equant telescopic bar 3. The second position-retaining rod 12 has a center position of 002 for cooperating with the chest of the human body 10 to position a zero point for measurement. The first clamping rod 11 is movably connected with the equant telescopic strips 3; in some embodiments, the first position-retaining rod 11 is hinged to the bisecting telescopic bar 3. The first clamping strip 11 can be folded towards the direction of the equant telescopic strip 3 to be closely attached to the equant telescopic strip 3 side by side.

The utility model discloses in, measuring unit comprises fixed unit and the measuring unit that is used for fixing. Wherein, the fixed unit is a fixed cross bar 41 with a clamping groove 43, and the fixed cross bar 41 is used for fixing the extension pipe and the measuring unit; the fixed cross bar 41 is horizontally fixed at the position 2/3 from bottom to top of the equant expansion bar 3; the measuring unit is a graduated scale 42 vertical to the fixed cross rod 41 and used for reading the central venous pressure value; the edge of the graduated scale 42 is provided with a clamping groove 44, and the clamping groove 44 is used for fixing the extension pipe. The fixed cross rod 41 and the graduated scale 42 intersect at the position 45 of 0cm of the graduated scale, and the intersection point is located at the midpoint of the equal division of the width of the telescopic bar and is also the zero point 001 position to be positioned. The scale 42 can rotate between 0-90 degrees relative to the fixed cross bar 41, so that the whole tool 100 can be folded and carried conveniently.

In some embodiments, the position-limiting plate 2 can be folded 180 degrees towards the equally-divided telescopic strips 3 in one direction, and the folding is positioned at the position close to 1/2 degrees in the center of the position-limiting plate 2. In order to improve the comfort of the patient during the measurement process, the width of the clamping plate 2 is more than or equal to the width of the chest cavity of the patient 10. Specifically, the width of the clamping plate is 23-53 cm

Specifically, the clamping plate 2 is vertically fixed at the bottom of the equant telescopic strip 3, and the clamping plate 2 is parallel to the plane where the first clamping rod 11 and the second clamping rod 12 are located and is located on the same side of the equant telescopic strip 3. In a specific embodiment, the movable connection part of the clamping plate 2 and the equant telescopic strips 3 is a hinge with a higher damping coefficient, and the clamping plate 3 can be folded to be closely attached to the equant telescopic strips 3 side by side.

In one specific embodiment, the first position-retaining rod 11 is 20cm long; the length of the second clamping rod is 12 cm; the length of the equally divided telescopic strips 3 is 13 cm; the equal division telescopic strips 3 are formed by combining 3 same telescopic strips, and the extensible degree is 20-35 cm; the measuring unit is 25cm long; the screens board width 50 cm.

When the tool 100 for measuring the central venous pressure for quickly positioning the zero point position of the utility model is used for measurement, as shown in fig. 3, the clamping plate 2 of the tool 100 is placed under the back of the patient 10, and the operation is used for positioning the bottom of the chest cavity of the patient; the plane of the equant expansion bar 3 is parallel and close to the lateral wall of the chest of the patient, so that the plane of the first clamping rod 11 and the second clamping rod 12 is positioned on the chest of the human body 10; the left and right adjustment of the blocking component makes the center 002 point of the second blocking rod 12 located on the line connecting the two nipples of the patient 10, i.e. the fourth rib. The utility model discloses in, select the 002 point as the advantage of fourth intercostal setpoint to lie in female breast position to this 002 point that lies in on 10 two nipple lines of patient is located fourth intercostal sternum handle, consequently, from the human height of 002 point (the sternum handle between the fourth rib) to screens board 2 (thorax bottom) for the thorax height, make to measure more accurately. The equant telescopic strip 3 is adjusted to enable the first clamping rod 11 and the second clamping rod 12 to be tightly attached to the thorax of the patient, and the operation is used for positioning the top of the thorax of the patient; the distance between the clamping plate 2 and the planes of the first clamping rod 11 and the second clamping rod 12, that is, the height of the equant telescopic bar 3 is the height of the thoracic cavity, at this time, the 2/3 height position of the equant telescopic bar 3 is the position 2/3 from the back to the chest of the patient, and the position where the fixing unit on the measuring assembly and the measuring unit intersect at the 0cm position 45 of the graduated scale is the zero point 001. Thus, the metrology tool 100 achieves a fast positioning of the zero point position, as shown in FIG. 8. Before the central venous pressure is measured, the front end of an extension tube (not shown in the figure) is connected with a tee joint, an injector is connected to the tail end of the extension tube, the extension tube and the tee joint are filled with physiological saline through the injector, then the tee joint is connected with the near end of a central venous catheter of a patient, at the moment, the extension tube is filled with the physiological saline, and the tee joint is closed. The rear end of the extension tube is firstly buckled in a clamping groove 43 of a fixed cross rod 41, then the extension tube is bent at a position 45 of 0cm of a graduated scale and is parallel to and upwards from the graduated scale 42, the tail end of the extension tube is buckled in a clamping groove 44 of the graduated scale 42, the tail end of the extension tube is positioned at the position of the graduated scale 42, wherein the length of the extension tube above the zero point position 001 is required to be ensured to be more than 30cm, an injector positioned at the tail end of the extension tube is removed, a tee joint is opened, and at the moment, the physiological saline in the extension tube can flow back into the blood vessel due to pressure difference until the pressure of the physiological saline in the extension tube. After the liquid level of the physiological saline in the extension tube is stable, the liquid level height of the physiological saline in the extension tube is read when a patient exhales, and the pressure represented by the liquid level height of the physiological saline at the moment is the central venous pressure, so that the zero point can be quickly positioned and the central venous pressure can be measured.

After the use is finished, the second clamping rod can be folded towards the end part of the first clamping rod, then the first clamping rod is folded towards the direction of the equant telescopic strips, and the first clamping rod and the second clamping rod are tightly attached to the equant telescopic strips side by side; folding the inside (equant telescopic bar) partition folding of screens board outside part, will measurationing the unit and turn to fixed unit to side by side, will equant telescopic bar to screens board orientation folding, can with the utility model discloses instrument 100 arranges in order for accomodating the state, as shown in fig. 2 to conveniently carry.

In the utility model discloses in, in the instrument 200 of another embodiment, as shown in fig. 4-9, the equant flexible subassembly includes three X-shaped scissors fork 23 and goes up horizontal pole and sheer pole, and three X-shaped scissors fork 23 is established ties articulated, goes up the horizontal pole and connects at the flexible top of three X-shaped scissors fork 23 equant, and the sheer pole is connected in the flexible bottom of three X-shaped scissors fork 23 equant. The height of the three X-shaped scissors 23 which can be adjusted by stretching is more than or equal to the thickness of the chest of the patient, namely more than 40 cm. Preferably, the height of the X-shaped scissors-fork 23 adjustable by telescoping is greater than 60 cm. The X-shaped scissors forks are connected by hinging the two upper end points of the lower X-shaped scissors fork with the two lower end points of the upper X-shaped scissors fork. The utility model discloses in, X-shaped scissors fork 23 is rotatable coupling at the intersect of X, and two scissors forks are rotatable at the intersect, when needs compression and tensile X-shaped scissors fork 23, two scissors forks rotate at the intersect and make the scissors fork rotate certain angle and change the height of whole X-shaped scissors fork 23. In some embodiments, the two scissors are provided with a through hole at the intersection of the X, and the two scissors are connected by inserting a screw 57 into the through hole, the scissors being rotatable relative to the screw 57. Of course, the utility model discloses well scalable subassembly also can utilize six scissors forks 23 to establish ties articulated, perhaps, utilizes nine scissors forks 23 to establish ties articulated, realizes the flexible function of partition equally.

In some embodiments, the upper and lower cross bars 28, 29 are symmetrically positioned relative to the attachment of the X-shaped scissors assembly 23. Specifically, the upper cross bar 28 and the lower cross bar 29 are provided with elongated recesses 51. One end point 231 of the bottom of the X-shaped scissors fork 23 is fixed at one end 291 of the lower cross bar 29, the other end point 232 of the bottom of the X-shaped scissors fork is provided with a protrusion 53, and the protrusion 53 is positioned in the elongated concave hole 51 of the lower cross bar and can slide in the elongated concave hole 51; one end point 233, corresponding to the fixed end point at the bottom, of the top of the X-shaped scissors fork is fixed at one end 281 of the upper cross bar 28, the other end point 234 of the top of the X-shaped scissors fork is provided with a protrusion 53, and the protrusion 53 is positioned in the elongated concave hole 51 of the upper cross bar 28 and can slide in the elongated concave hole 51. When the X-shaped scissors fork 23 is stretched and adjusted in height, the bulge 53 at the other end point 232 at the bottom of the X-shaped scissors fork slides in the elongated concave hole 51 of the lower cross bar; meanwhile, the protrusion 53 of the other end 234 of the top of the X-shaped scissors fork slides in the elongated concave hole 51 of the upper cross bar, so as to ensure the free telescopic adjustment of the X-shaped scissors fork.

The blocking component comprises a first blocking rod 21, and the first blocking rod 21 is perpendicular to the plane of the X-shaped scissor fork 23. Specifically, one end of the first position-locking rod 21 is movably connected to the upper cross rod 28; more specifically, the first capture lever 21 is coupled to an end 282 of the upper cross bar 28 to which the X-shaped scissors assembly is not secured. In other embodiments, the first position-retaining rod 21 may also be connected to the middle portion of the upper cross bar 28, so that when the tool 200 is used for measuring a patient with a small size, the first position-retaining rod 21 is closer to the position of the thoracic cavity, and the zero point position is more accurately positioned. The first clamping rod 21 is movably connected with the upper cross rod 28, and the first clamping rod 21 can rotate relative to the upper cross rod 28; the first position-retaining bar 21 can be folded towards the plane of the retractable assembly so that the first position-retaining bar 21 is arranged side by side with the upper cross bar 28. Specifically, the other end of the upper cross rod is provided with a convex plate, a through hole is formed in the convex plate, a through hole is also formed in the connecting end of the first clamping plate 21, and the two through holes are connected through a nut 56, so that the first clamping plate 21 can rotate on the nut 56.

The detent plate assembly may be a detent plate. The detent plate assembly may also include two detent plates 22; the two clamping plates 22 are hinged through hinges; the two clamping plates 22 can be folded by the rotation of the hinge.

The lower cross bar 29 of the halving telescopic assembly is hinged on the side of one of the clamping plates 22 through the hinge 55, so that the plane of the halving telescopic assembly is vertical to the plane of the clamping plate 22. Meanwhile, the lower cross bar 29 can be folded toward the blocking plate by the hinge 55. The clamping rod and the clamping plate are both positioned on the same side of the X-shaped scissor fork.

The measuring assembly comprises a fixed cross bar 24 and a measuring scale 25; the measuring scale 25 is vertically attached to the fixed crossbar 24. The fixed crossbar 24 is attached to the X-shaped scissor fork 23 at a bottom-to-top 2/3. That is, when there are three X-shaped scissors 23, the fixed crossbar 24 connects the tops of the second X-shaped scissors. When six of the X-shaped scissors forks 23 are present, the fixed crossbar 24 is connected to the top of the fourth X-shaped scissors fork. When the number of the X-shaped scissors 23 is nine, the fixed cross bar 24 is connected with the top of the sixth X-shaped scissors. The fixed cross bar 24 is provided with a strip-shaped concave hole 52; one end of the fixed cross bar 24 is fixed with the end point of the X-shaped scissor fork 23; the other end of the X-shaped scissors fork is provided with a protrusion 53, and the protrusion 53 is positioned in the elongated recess 52 of the fixed cross bar 24 and slides along the elongated recess 52. The measurement scale is a graduated scale 25 in centimeters for reading the level of saline in the extension tube, i.e., the central venous pressure value. A bump 54 is arranged at the 0 scale mark 27 of the measuring scale, and the bump 54 is positioned in the elongated concave hole 52 of the fixed cross rod 24; the projection 54 is slidable within the elongate recess 52 to allow the scale 25 to be moved along the fixed rail 24. The fixed bar 24 intersects the measurement scale 25 at a 0cm point 27 of the measurement scale 25, which is a movable point.

A U-shaped buckle 26 is arranged at the 0 scale mark 27 of the measuring scale 25, and a plurality of U-shaped buckles 26 for fixing the extension pipe are arranged at other positions of the measuring scale 25 and the fixed cross rod 24. These U-shaped snaps 26 are used to secure the extension tube and to guide the position and turning of the extension tube.

When the tool 200 for measuring the central venous pressure for quickly positioning the zero point position of the utility model is used for measurement, as shown in fig. 8 and 9, the clamping plate 22 of the tool 200 is placed under the back of the patient 10, and the operation is used for positioning the bottom of the chest of the patient; the plane where the equant telescopic component is located is close to the lateral wall of the chest of the patient in parallel, and the equant telescopic component is adjusted to enable the first clamping rod 21 to be tightly attached to the chest of the human body 10, so that the operation is used for positioning the top of the chest of the patient; the distance between the clamping plate 22 and the first clamping rod 21, namely the height of the equal division telescopic assembly is the height of the thoracic cavity, and the fixed cross rod 24 positioned at the 2/3 height of the equal division telescopic assembly is the 2/3 height of the thoracic cavity of the patient from bottom to top; then slide the measuring scale 25 left and right to align with the line connecting the two nipples of the patient, i.e. the position between the fourth ribs, at this time, the 0-scale line 27 on the measuring scale 25 is 001 point, i.e. the zero point for measuring the central venous pressure (the point where the horizontal plane of the back of the patient facing upwards 2/3 and the vertical plane between the fourth ribs form the intersection). Thus, the metrology tool accomplishes a fast positioning of the zero point location.

After the zero point position 001 is positioned, the front end of the extension tube is connected with the tee joint, the injector is connected to the tail end of the extension tube, the extension tube and the tee joint are filled with the normal saline through the injector, the tee joint is connected with the near end of the central venous catheter of a patient, the extension tube is filled with the normal saline at the moment, and the tee joint is closed. The rear end part of the extension pipe is firstly buckled in a U-shaped buckle 26 of a fixed cross bar 24, then the extension pipe is pressed into the U-shaped buckle 26 at the positioned zero point 001 (the position of a scale mark 27 of 0) and is vertically and upwards buckled into the U-shaped buckle 26 of a measuring scale 25 after being bent, so that the tail end of the extension pipe is positioned at the measuring scale 25 (the extension pipe is not shown in the figure), wherein the length of the extension pipe above the zero point 001 is required to be ensured to be more than 30 cm; and then removing the injector at the tail end of the extension tube, opening the tee joint, so that the physiological saline in the extension tube can flow back into the blood vessel due to pressure difference until the pressure of the physiological saline in the extension tube is equal to the central venous pressure, reading the liquid level height of the physiological saline in the extension tube when the patient exhales the tail end after the liquid level of the physiological saline in the extension tube is stable, and determining the pressure represented by the liquid level height of the physiological saline as the central venous pressure to realize quick zero point positioning and central venous pressure measurement.

After the use is finished, the first clamping rod 21 can be folded towards the direction of the equant telescopic component, so that the first clamping rod 21 and the equant telescopic component are attached to each other side by side; compress X shape scissors fork to minimum state, fold screens board 22 outside part inside (the flexible subassembly direction of equalling), fold the flexible subassembly of equalling to screens board 22 direction, can with the utility model discloses instrument 200 arranges in order for accomodating the state, as shown in fig. 4 to conveniently carry.

Claims

1. The tool for measuring the central venous pressure for quickly positioning the zero point position is characterized by comprising a clamping assembly, an equal division telescopic assembly, a clamping plate assembly and a measuring assembly; the clamping component, the measuring component and the clamping plate component are respectively connected to the equant telescopic components; the plane at screens subassembly and screens board subassembly place is parallel to screens subassembly and screens board subassembly are located the same one side of equalling divide telescopic component.

2. The tool for rapidly locating the zero position and measuring central venous pressure of claim 1, wherein the bisector telescoping assembly comprises a plurality of X-shaped scissors forks, a bottom rail and a bottom rail; the plurality of X-shaped scissor forks are connected in series and hinged; the lower cross rod is connected to the bottoms of the X-shaped scissors forks which are hinged in series; the upper cross bar is connected to the tops of the X-shaped scissors forks which are hinged in series.

3. The tool for rapidly locating the zero position measuring central venous pressure of claim 2, wherein the plurality of X-shaped scissors tines is three, or six, or nine X-shaped scissors tines.

4. The tool for rapidly positioning the zero point position and measuring the central venous pressure as claimed in claim 2, wherein the upper cross bar and the lower cross bar are provided with elongated concave holes; one end point of the bottom of the X-shaped scissors fork is fixed at one end of the lower cross rod, and the other end point of the bottom of the X-shaped scissors fork is provided with a bulge which is positioned in the strip-shaped concave hole of the lower cross rod and can slide in the strip-shaped concave hole; the top of X-shaped scissors fork and a corresponding extreme point of bottom stiff end are fixed in the one end of last horizontal pole, and another extreme point at the top of X-shaped scissors fork is equipped with the arch, the arch is located the long bar-shaped concave hole of last horizontal pole and can slide in rectangular shape concave hole.

5. The tool for rapidly locating the zero position and measuring central venous pressure of any one of claims 1 to 4, wherein the detent assembly comprises a first detent lever; the first clamping rod is vertical to the plane of the X-shaped scissor fork; the first clamping rod is connected to the upper cross rod.

6. The tool for rapidly locating the zero position and measuring central venous pressure of claim 5, wherein the clamping plate assembly comprises two clamping plates; the two clamping plates are hinged; the lower cross rod of the equal division telescopic component is connected to the side edge of one clamping plate; the plane of the equal division telescopic component is vertical to the plane of the clamping plate.

7. The tool for measuring central venous pressure for rapidly locating the zero position according to claim 6, wherein the measuring assembly comprises a fixed cross bar and a measuring scale; the measuring scale is vertically connected to the fixed cross rod.

8. The tool for rapidly locating the zero position measuring central venous pressure of claim 7, wherein the fixed cross bar is attached at bottom-to-top 2/3 of the X-shaped scissors fork.

9. The tool for measuring central venous pressure capable of rapidly positioning the zero point position is characterized in that a bump is arranged at the 0-scale mark of the measuring scale and is positioned in an elongated concave hole of the fixed cross rod; the projection can slide in the long strip-shaped concave hole.

10. The tool for measuring the central venous pressure for quickly positioning the zero point position according to claim 7, wherein a U-shaped buckle is arranged at the 0-scale mark of the measuring scale; the other positions of the measuring scale and the fixed cross rod are provided with a plurality of U-shaped buckles for fixing the extension pipe.