CN109907748B - Invasive blood pressure measuring device convenient for blood sample collection - Google Patents
Invasive blood pressure measuring device convenient for blood sample collection Download PDFInfo
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- CN109907748B CN109907748B CN201910306482.6A CN201910306482A CN109907748B CN 109907748 B CN109907748 B CN 109907748B CN 201910306482 A CN201910306482 A CN 201910306482A CN 109907748 B CN109907748 B CN 109907748B
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Abstract
The invention relates to a invasive blood pressure measuring device convenient for blood sample collection, which comprises an arterial catheter, a flushing pipe, a three-way valve, a pressure measuring transducer and a temporary storage device, wherein the arterial catheter is connected with the pressure measuring transducer through the three-way valve, the temporary storage device and the flushing pipe in sequence, and is characterized in that: the temporary storage device consists of a cylinder, a piston, a push handle and a communicating pipe, the front end of the piston forms a liquid storage cavity, the center of the push handle is provided with a central through cavity, and the central through cavity is communicated with the liquid storage cavity; one end of the communicating pipe is communicated with the liquid storage cavity, the other end of the communicating pipe is communicated with the flushing pipe, and a limiting device for limiting the push handle is arranged on the cylinder. The invasive blood pressure measuring device not only can realize the real-time monitoring of the invasive blood pressure of the artery of the patient, but also can extract the blood through the three-way valve after the communication between the arterial catheter and the liquid storage cavity is closed, solves the problems that the existing invasive blood pressure measuring device is complicated in operation steps, easy to cause misoperation and easy to cause cross infection of the patient, has remarkable beneficial effects, and is suitable for application and popularization.
Description
Technical Field
The present invention relates to an invasive blood pressure measuring device, and more particularly, to an invasive blood pressure measuring device that facilitates blood sample collection and can effectively avoid nosocomial infections.
Background
Compared with a noninvasive blood pressure measuring device, the invasive blood pressure measuring device not only can timely and accurately monitor the blood pressure change of a patient, but also can conveniently collect blood samples through a pipeline and send and examine various assays (such as arterial blood gas analysis and the like), is favorable for medical staff to accurately judge the state of the patient, and is suitable for critical patients with various shock, severe myocardial infarction, heart failure, respiratory failure, burn and the like, complex operation, postoperative monitoring and the like. The pressure measuring method adopted by the invasive blood pressure measuring device is direct pressure measurement in the artery, and generally consists of an arterial catheter, a flushing pipe, a three-way valve and a pressure measuring transducer. The front end of the arterial catheter is inserted into an artery of a patient and is connected with the pressure measuring transducer through the flushing pipe, a three-way valve is arranged at the joint of the arterial catheter and the flushing pipe so as to be beneficial to blood sampling, and the pressure measuring transducer converts arterial pressure signals into electric signals and outputs the electric signals to the blood pressure monitoring equipment. The blood sample collection is usually carried out by using a hollow needle to draw at a three-way valve, and in the blood drawing process, 2 hollow needles are needed to switch the on-off state of the three-way valve for multiple times, namely, firstly, the three-way valve is used for switching off the communication between an arterial catheter and a flushing pipe, then, one hollow needle is used for drawing heparin brine in the arterial catheter, and then, an outer through pipe of the three-way valve is switched off; after the blood is extracted, the outer through pipe is closed again, a first hollow needle is connected, the mixture containing heparin saline and a little blood extracted by the first hollow needle is injected into a patient, then the three-way valve is used for connecting the communication between the arterial catheter and the flushing pipe, and the heparin saline is used for flushing the whole pipeline. Critical patients often need more frequent blood sample collection and delivery and various assays, because the blood collection operation steps are very tedious, the burden of medical staff is seriously increased, the blood possibly flows out of the three-way valve due to a little negligence in the operation process, the three-way valve is extremely easy to pollute, microorganisms are caused to enter the blood, the occurrence risk of adverse events of the patients and the infection probability in a hospital are increased, and the result is serious.
Disclosure of Invention
In order to overcome the defects of the technical problems, the invention provides an invasive blood pressure measuring device which is convenient for blood sample collection and can effectively avoid nosocomial infection.
The invention relates to a invasive blood pressure measuring device convenient for blood sample collection, which comprises an arterial catheter, a flushing pipe, a three-way valve, a pressure measuring transducer and a temporary storage device, wherein the front end of the arterial catheter is placed into an artery of a patient, the arterial catheter is connected with the pressure measuring transducer through the three-way valve, the temporary storage device and the flushing pipe in sequence, and the pressure measuring transducer is used for converting a blood pressure signal into an electric signal and outputting the electric signal; the method is characterized in that: the temporary storage device consists of a cylinder, a piston, a push handle and a communicating pipe, wherein the piston is positioned in an inner cavity of the cylinder, a liquid storage cavity is formed between the front end surface of the piston and the inner wall of the cylinder, the rear end surface of the piston is connected with the push rod, the center of the push handle is provided with a central through cavity along the length direction of the push handle, the central through cavity is communicated with the liquid storage cavity, and the liquid storage cavity is communicated with an arterial catheter through a three-way valve; one end of the communicating pipe is communicated with the central through cavity, the other end of the communicating pipe is communicated with the flushing pipe, and a limiting device for limiting the extending length of the push handle is arranged on the cylinder.
The invention relates to a invasive blood pressure measuring device convenient for blood sample collection, which consists of two rotating rods, two limiting plates and an arc plate, wherein the pushing handle is fixed with two horizontal plates along the length direction of the pushing handle; limiting blocks for preventing the two rotating rods from excessively rotating outwards are fixed on end plates at the outer sides of the two rotating rods; under the condition that the arc-shaped plate is not subjected to external force, the inner ends of the two limiting plates have a trend of being pressed into the notch on the pushing handle, and when the arc-shaped plate is pressed downwards, the two rotating rods rotate outwards to drive the limiting plates to move out of the notch.
According to the invasive blood pressure measuring device convenient for blood sample collection, the vertical plate is fixed on the push handle along the length direction of the push handle, and the guide groove for limiting the vertical plate is arranged in the inner cavity of the cylinder.
The invention relates to a invasive blood pressure measuring device convenient for blood sample collection, which comprises a sealing bag for sealing the opening end of a cylinder, wherein one end of the sealing bag is fixed on the outer surface of the cylinder, and the other end of the sealing bag is fixed on the outer surface of a communicating pipe.
According to the invasive blood pressure measuring device convenient for blood sample collection, the saline filling pipe and the signal cable are arranged on the pressure measuring transducer, the saline filling pipe is connected with the flushing pipe through the pressure measuring transducer, the upper end of the saline filling pipe is connected with the saline bottle or the saline bag, and the signal cable is connected with the blood pressure monitoring equipment.
The invention relates to a invasive blood pressure measuring device convenient for blood sample collection, which consists of a control handle and 3 through pipes, wherein an arterial catheter and a cylindrical barrel are respectively connected with 2 through pipes in the 3 through pipes, and the rest 1 through pipe is used for blood drawing; the control handle rotates to the upper part of the through pipe, and the through pipe is in a cut-off state.
According to the invasive blood pressure measuring device convenient for blood sample collection, the hard or soft heparin cap is connected to the outwards-facing through pipe on the three-way valve.
The invention relates to a invasive blood pressure measuring device convenient for blood sample collection, which consists of a rotating rod, a spring and a handle, wherein an end plate is fixed at the end part of a cylindrical barrel; when the rotating rod is not subjected to external force, the rotating rod has a tendency to be pressed into the notch on the upper plate.
The beneficial effects of the invention are as follows: the invention discloses a invasive blood pressure measuring device convenient for blood sample collection, which is characterized in that a temporary storage device consisting of a cylinder, a piston, a push handle, a communicating pipe and a limiting device is arranged on a flushing pipe between a three-way valve and a pressure measuring transducer, a liquid storage cavity is formed between the front end surface of the piston and the cylinder, the flushing pipe is communicated with the liquid storage cavity through the communicating pipe and a central through cavity, and the limiting device is used for limiting the extension length of the push handle. When monitoring blood pressure, the piston is pushed to the forefront end, the volume of the liquid storage cavity is the smallest (near 0), and the flushing pipe is communicated with the arterial catheter through the communicating pipe, the central communicating cavity and the three-way valve in sequence, so that the invasive blood pressure of the artery of the patient is monitored in real time and effectively; when a blood sample needs to be extracted, the limiting device is controlled to be separated from the limit of the push handle, so that arterial blood of a patient flows into the liquid storage cavity sequentially through the arterial catheter and the three-way valve, heparin salt water in the arterial catheter and the three-way valve is discharged, at the moment, the communication between the arterial catheter and the liquid storage cavity is turned off, and the blood is extracted through the three-way valve, so that the problems that the operation steps of the existing invasive blood pressure measuring device convenient for blood sample collection are complex, misoperation is easy to occur, and hospital infection is easy to occur to the patient are solved, and the blood pressure measuring device has remarkable beneficial effects and is suitable for application and popularization.
Drawings
FIG. 1 is a schematic diagram of a prior art invasive blood pressure measuring device for facilitating blood sample collection;
FIGS. 2 and 3 are schematic diagrams of drawing a blood sample using a conventional invasive blood pressure measuring device that facilitates blood sample collection;
FIG. 4 is a schematic diagram of the structure of the invasive blood pressure measuring apparatus of the present invention for facilitating blood sample collection;
FIG. 5 is a schematic view of the structure of a push handle in the invasive blood pressure measuring apparatus of the present invention for facilitating blood sample collection;
FIG. 6 is a block diagram of a limiting device in a limiting state in the invasive blood pressure measuring device of the present invention for facilitating blood sample collection;
FIG. 7 is a block diagram of a limiting device in a non-limiting state in the invasive blood pressure measuring device of the present invention for facilitating blood sample collection;
fig. 8 and 9 are schematic diagrams of drawing a blood sample using the invasive blood pressure measuring apparatus of the present invention for facilitating blood sample collection.
Fig. 10 and 11 are schematic structural views of a second limiting device according to the present invention, where the limiting device in fig. 10 is in a limiting state, and the limiting device in fig. 11 is in an non-limiting state.
In the figure: the device comprises an arterial catheter, a 2 three-way valve, a 3 flushing pipe, a 4 pressure measuring transducer, a 5 signal cable, a 6 saline filling pipe, a 7 control handle, an 8 patient, a 9 first hollow needle, a 10 second hollow needle, an 11 cylindrical barrel, a 12 piston, a 13 pushing handle, a 14 liquid storage cavity, a 15 communicating pipe, a 16 sealing bag, a 17 notch, a 18 end plate, a 19 rotating rod, a 20 rotating shaft, a 21 limiting plate, a 22 arc plate, a 23 horizontal plate, a 24 vertical plate, a 25 guide groove, a 26 limiting block, a 27 heparin cap, a 28 central through cavity, a 29 rotating rod, a 30 spring, a 31 handle and a 32 upper plate.
Description of the embodiments
The invention will be further described with reference to the drawings and examples.
As shown in fig. 1, a structural schematic diagram of a conventional invasive blood pressure measuring device convenient for blood sample collection is provided, which consists of an arterial catheter 1, a three-way valve 2, a flushing tube 3 and a pressure measuring transducer 4, wherein the front end of the arterial catheter 1 is used for being inserted into an arterial blood vessel of a patient 8, the arterial catheter 1 is connected with the flushing tube 3 through the three-way valve 2, and heparin saline is very slowly injected into the three-way valve 2 and the arterial catheter 1 by the flushing tube 3, so that thrombus does not appear in the arterial catheter 1, and the pressure measuring transducer 4 can accurately measure the pressure in the arterial blood vessel of the patient 8. The pressure measuring transducer 4 is provided with a signal cable 5 and a saline filling pipe 6, and the pressure measuring transducer 4 is used for converting arterial blood pressure signals into electric signals and inputting the signal cable 5 to blood pressure monitoring equipment. The upper end of the saline filling pipe 6 is connected with a saline bag or a saline bottle for filling heparin saline into the flushing pipe 3. The three-way valve 2 is provided with a control handle 7 and 3 through pipes, the control handle 7 rotates to the upper end of the through pipe, and the through pipe is in a cut-off state.
In the blood pressure monitoring period, the control handle 7 on the three-way valve 2 rotates to the upper part of the through pipe at the outer end, so that the arterial catheter 1 and the flushing pipe 3 are in a communication state, and the pressure measuring transducer 4 measures arterial blood pressure of a patient in real time. When a blood sample of a patient needs to be collected, a first hollow needle 9 is firstly inserted into a through pipe at the outer end of the three-way valve 2, then the control handle 7 is rotated to be above a through pipe connected with the flushing pipe 3, at the moment, the communication between the arterial catheter 1 and the flushing pipe 3 is disconnected, the arterial catheter 1 is communicated with the through pipe at the upper outer end of the three-way valve 2, heparin saline in the arterial catheter 1 and the three-way valve 2 is pumped out by the first hollow needle 9 until a small amount of blood enters the first hollow needle 9, as shown in fig. 2. Then, the communication between the arterial catheter 1 and the outer tube on the three-way valve 2 is closed, the second hollow needle 10 is quickly replaced, and the control handle 7 is rotated to the upper part of the tube connected with the flushing tube 3 again, so that the blood drawing operation is performed, as shown in fig. 3.
After the blood drawing is completed, the outer tube on the three-way valve 2 is required to be closed again through the control handle 7, then a first hollow needle 9 containing heparin salt water and a small amount of blood mixed liquid is connected to the outer tube, then the control handle 7 is rotated again to the upper part of the tube connected with the flushing tube 3, the mixed liquid in the first hollow needle 9 is injected into a patient, finally the control handle 7 is rotated to the upper part of the outer tube, the outer tube on the three-way valve 2 is disconnected, and the arterial catheter 1 is communicated with the flushing tube 3 for blood pressure measurement and monitoring. Therefore, the operation steps are very complicated, misoperation can easily occur, the misoperation can lead to blood drawing failure, or blood of a patient flows out through the outer tube on the three-way valve 2, and moreover, the outer tube of the three-way tube 2 is extremely easy to pollute due to repeated insertion and extraction of the hollow needle, so that the infection complication of the patient can be caused.
As shown in fig. 4, a schematic structural diagram of an invasive blood pressure measuring device for facilitating blood sample collection is provided, which is composed of an arterial catheter 1, a three-way valve 2, a flushing pipe 3, a pressure measuring transducer 4 and a temporary storage device, wherein the front end of the arterial catheter 1 is used for being inserted into an arterial blood vessel of a patient 8, the arterial catheter 1 is connected with the pressure measuring transducer 4 through the three-way valve 2, the temporary storage device and the flushing pipe 3 in sequence, and a saline filling pipe 6 and a signal cable 5 are also arranged on the pressure measuring transducer 4. The arterial catheter 1, the three-way valve 2, the flushing pipe 3, the pressure measuring transducer 4, the signal cable 5 and the saline filling pipe 6 have the same structure and function as the corresponding parts on the existing invasive blood pressure measuring device which is convenient for blood sample collection, and the difference is that a temporary storage device is arranged between the control handle 7 and the flushing pipe 3 in the technical scheme of the invention.
The temporary storage device is composed of a cylindrical barrel 11, a piston 12, a push handle 13 and a communicating pipe 15, wherein the cylindrical barrel 11 can adopt an empty needle outer barrel, the interior of the cylindrical barrel 11 is a cavity, the piston 12 is positioned in the inner cavity of the cylindrical barrel 11, and the piston 12 is in interference fit with the inner cavity of the cylindrical barrel 11. The inner end of the push handle 13 is fixed in the center of the outer side surface of the piston 12, a liquid storage cavity 14 is formed between the inner side surface of the piston 12 and the inner cavity of the cylinder 11, a central through cavity 28 is formed in the center of the push handle 13 along the length direction of the push handle, the front end of the cylinder 11 is connected with the three-way valve 2, and when the piston 12 is pushed to the foremost end of the cylinder 11, the central through cavity 28 is directly communicated with the arterial catheter 1; after the piston 12 is retracted to form the liquid storage cavity 14 inside the cylinder 11, the central through cavity 28 is communicated with the arterial catheter 1 through the liquid storage cavity 14. The outer end of the cylinder 11 is provided with a limiting device for controlling the extension length of the push handle 13. One end of the communicating pipe 15 is communicated with the liquid storage cavity 14 through the central through cavity 28, and the other end is communicated with the flushing pipe 3, so that the arterial catheter 1 is communicated with the pressure measuring transducer 4 through the three-way valve 2, the central through cavity 28, the communicating pipe 15 and the flushing pipe 3 in sequence, and the timely and accurate measurement of the invasive arterial blood pressure of a patient is realized.
In the period of monitoring the invasive arterial blood pressure of the patient 8, the piston 12 moves to the forefront end of the cylindrical barrel 11, and the piston 12 is at the forefront position and is not moved under the limiting and fixing effects of the limiting device on the push handle 13, so that the liquid storage cavity 14 does not exist; heparin saline extremely slowly flowing down from the flushing pipe 3 is injected into the artery of a patient through the communicating pipe 15, the central through cavity 28, the three-way valve 2 and the arterial catheter 1 in sequence, so as to realize the measurement of arterial blood pressure. When the blood of the patient 8 needs to be collected, the limiting device is separated from the control of the push rod 13, the piston 12 moves backwards under the action of the arterial blood pressure of the human body, heparin saline in the arterial catheter 1 and the three-way valve 2 enters the liquid storage cavity 14, the blood in the artery of the patient enters the arterial catheter 1 and the three-way valve 2, and after the blood flows into the three-way valve 2, the requirement of blood extraction from the three-way valve 2 is met, and at the moment, the push rod 13 is limited by the limiting device, so that the blood can be extracted. In order to facilitate blood drawing and pollute the three-way valve 2, the three-way valve 2 is connected with a heparin cap 27, the heparin cap 27 adopts a hard or soft heparin cap, and the soft heparin cap can be directly inserted into a needle to draw blood; the hard heparin cap is used for drawing blood by using the hollow needle after the plugging head is unscrewed. After the extraction, the pushing handle 13 is pushed to the forefront end through the piston 12, and the extracted heparin saline and blood are refilled into the patient.
As shown in fig. 5, a schematic structural diagram of the push handle 13 in the present invention is provided, and gaps 17 are arranged on the push handle 13 at intervals, and the limiting device is matched with the gaps 17 to realize positioning of the push handle 13. As shown in fig. 6 and 7, the limiting device in the invasive blood pressure measuring device for blood sample collection of the present invention is shown in the limiting and non-limiting state, the limiting device is composed of two rotating rods 19, two limiting plates 21 and an arc 22, the end of the cylindrical tube 11 is fixed with an end plate 18, the plane of the end plate 18 is perpendicular to the push rod 13, the lower ends of the two rotating rods 19 are hinged on the end plate 18 via a rotating shaft 20, the upper ends of the two rotating rods 19 are respectively fixed at two ends of the arc 22, and the arc 22 is in an upward convex shape, so that the two rotating rods 19 can rotate to two sides in the process of pressing the arc 22 downwards.
Horizontal plates 23 are fixed on two sides of the push handle 13 along the length direction, notches 17 are formed at the same positions of the two horizontal plates 23, and the notches 17 are multiple groups. The two limiting plates 21 are respectively fixed on the inner sides of the middle parts of the two rotating rods 19, under the condition that the arc-shaped plate 22 is not subjected to external force, the inner ends of the two limiting plates 21 are driven to press the push handle 13, and if the pressing position is positioned at the notch 17, the inner ends of the limiting plates 21 are pressed into the notch 17 so as to realize the positioning of the push handle 13.
Limiting blocks 26 are fixed on end plates 18 outside the upper ends of the two rotating rods 19, and the limiting blocks 26 can prevent the rotating rods 19 from excessively rotating outwards, so that the two rotating rods 19 can rotate outwards by a proper angle, the two limiting plates 21 can be moved out of the notches 17, and the limiting of the push handle 13 is released. In order to prevent the push handle 13 from rotating during the reciprocating motion of the piston 12 and the push handle 13, a vertical plate 24 is fixed on the push handle 13 along the length direction of the push handle 13, and a guide groove 25 for limiting and guiding the vertical plate 24 is arranged in the inner cavity of the cylindrical barrel 11, so that the push handle 13 is prevented from rotating, and the notch 17 is always oriented to the limiting plate 21.
As shown in fig. 10 and 11, a schematic structural diagram of a second limiting device in the present invention is provided, the limiting device in fig. 10 is in a limiting state, the limiting device in fig. 11 is in an non-limiting state, the second limiting device is composed of a rotating rod 29, a spring 30 and a handle 31, an upper plate 32 is provided on the outer surface of the push handle 13 along the length direction thereof, a plurality of notches 17 are provided on the upper plate 32, one end of the rotating rod 29 is hinged on the end plate 18 via a rotating shaft, one end of the spring 30 is fixed on the end plate 18, the other end presses the rotating rod 29, and when the rotating rod 29 is not subjected to external force, the rotating rod 29 has a tendency to press into the notches on the upper plate. When the push handle 13 is used, the limit of the push handle 13 can be released by lifting the handle 31, the handle 31 is released, and the push handle 13 can be limited after the rotating rod 29 is clamped into the notch 17 on the upper plate 32, and the push handle 13 at the moment can not move.
As shown in fig. 8 and 9, a schematic diagram of drawing a blood sample using the invasive blood pressure measuring apparatus for facilitating blood sample collection of the present invention is provided, and the control handle 7 on the three-way valve 2 is rotated to the upper side of the outer tube during the blood pressure monitoring period, and the arterial catheter 1 is communicated with the central through cavity 28, so as to monitor the blood pressure of the patient. When the blood of a patient needs to be collected, the arc-shaped plate 22 is pressed down, so that the limiting plate 21 is moved out of the notch 17 and is separated from limiting the push handle 13; at this time, the blood in the artery of the patient 8 flows into the arterial catheter 1 and the three-way valve 2 under the self pressure, the piston 12 moves to the right to increase the volume of the liquid storage cavity 14, and meanwhile, the original heparin saline in the arterial catheter 1 and the three-way valve 2 is pushed into the liquid storage cavity 14. After the three-way valve 2 is filled with blood, as shown in fig. 8, an empty needle is inserted into a heparin cap 27 on the three-way valve 2, then the control handle 7 is swung above a tube connected with the cylindrical barrel 11, the arterial catheter 1 is disconnected from the liquid storage cavity 14, and the blood is extracted. After the extraction, the control handle 7 is turned back to the original position, then the pushing handle 13 is pushed in, the solution in the liquid storage cavity 14 is pushed into the patient, and the state of blood pressure monitoring of the patient 8 is returned again.
Claims (5)
1. The invasive blood pressure measuring device comprises an arterial catheter (1), a flushing pipe (3), a three-way valve (2), a pressure measuring transducer (4) and a temporary storage device, wherein the front end of the arterial catheter is placed into an artery of a patient, the arterial catheter is connected with the pressure measuring transducer through the three-way valve, the temporary storage device and the flushing pipe in sequence, and the pressure measuring transducer is used for converting blood pressure signals into electric signals and outputting the electric signals; the method is characterized in that: the temporary storage device consists of a cylindrical barrel (11), a piston (12), a pushing handle (13) and a communicating pipe (15), wherein the piston is positioned in an inner cavity of the cylindrical barrel, a liquid storage cavity (14) is formed between the front end surface of the piston and the inner wall of the cylindrical barrel, the rear end surface of the piston is connected with the pushing handle, the center of the pushing handle is provided with a central through cavity (28) along the length direction of the pushing handle, the central through cavity is communicated with the liquid storage cavity, and the liquid storage cavity is communicated with an arterial catheter through a three-way valve; one end of the communicating pipe is communicated with the central through cavity, the other end of the communicating pipe is communicated with the flushing pipe, and a limiting device for limiting the extension length of the push handle (13) is arranged on the cylindrical barrel (11);
a vertical plate (24) is fixed on the push handle (13) along the length direction of the push handle, and a guide groove (25) for limiting the vertical plate is arranged in the inner cavity of the cylindrical barrel (11);
the limiting device consists of two rotating rods (19), two limiting plates (21) and an arc plate (22), wherein the push handle (13) is fixed with two horizontal plates (23) along the length direction of the push handle, the end part of the cylindrical barrel (11) is fixed with an end plate (18), the two horizontal plates are provided with notches (17), the lower ends of the two rotating rods are hinged on the end plate through rotating shafts (20), the upper ends of the two rotating rods are fixed with the two ends of the arc plate, the outer ends of the two limiting plates are respectively fixed on the two rotating rods, and the inner ends of the two limiting plates are matched with the notches; limiting blocks (26) for preventing the end plates (18) from excessively rotating outwards are fixed on the outer sides of the two rotating rods (19); under the condition that the arc-shaped plate is not subjected to external force, the inner ends of the two limiting plates have a trend of being pressed into the notch (17) on the pushing handle, and when the arc-shaped plate is pressed downwards, the two rotating rods rotate outwards to drive the limiting plates to move out of the notch;
or the limiting device consists of a rotating rod (29), a spring (30) and a handle (31), wherein the end part of the cylindrical barrel (11) is fixedly provided with an end plate (18), the outer surface of the pushing handle (13) is provided with an upper plate (32) along the length direction of the pushing handle, the upper plate is provided with a plurality of notches (17), one end of the rotating rod is hinged to the end plate through a rotating shaft, the spring applies pressure to the other end of the rotating rod, and the handle is fixed at the position where the spring applies pressure to the rotating rod; when the rotating rod is not subjected to external force, the rotating rod has a tendency to be pressed into the notch on the upper plate; when the push handle (13) is used, the limit on the push handle (13) can be released by lifting the handle (31), the handle (31) is released, and when the rotating rod (29) is clamped into the notch (17) on the upper plate (32), the push handle (13) can be limited, and the push handle (13) at the moment is not movable.
2. The invasive blood pressure measurement device for facilitating blood sample collection of claim 1, wherein: comprises a sealing bag (16) for sealing the opening end of the cylinder (11), one end of the sealing bag is fixed on the outer surface of the cylinder, and the other end is fixed on the outer surface of the communicating pipe (15).
3. The invasive blood pressure measuring device for facilitating blood sample collection according to claim 1 or 2, wherein: the pressure measuring transducer (4) is provided with a salt injection pipe (6) and a signal cable (5), the salt injection pipe is connected with the flushing pipe (3) through the pressure measuring transducer, the upper end of the salt injection pipe is connected with a salt water bottle or a salt water bag, and the signal cable is connected with blood pressure monitoring equipment.
4. The invasive blood pressure measuring device for facilitating blood sample collection according to claim 1 or 2, wherein: the three-way valve (2) consists of a control handle (7) and 3 through pipes, the arterial catheter (1) and the cylindrical barrel (11) are respectively connected with 2 through pipes in the 3 through pipes, and the rest 1 through pipe is used for drawing blood; the control handle rotates to the upper part of the through pipe, and the through pipe is in a cut-off state.
5. The invasive blood pressure measuring device for facilitating blood sample collection according to claim 1 or 2, wherein: the through pipe facing outwards on the three-way valve (2) is connected with a hard or soft heparin cap (27).
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| CN201910306482.6A CN109907748B (en) | 2019-05-20 | 2019-05-20 | Invasive blood pressure measuring device convenient for blood sample collection |
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| CN109907748B true CN109907748B (en) | 2024-02-06 |
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| CN107374648A (en) * | 2016-05-17 | 2017-11-24 | 爱康医学农业合作协会有限公司 | Flushable Fluid Handling Component |
| CN208709875U (en) * | 2017-04-28 | 2019-04-09 | 南昌大学第二附属医院 | Blood pressure monitoring blood collection device and blood pressure monitoring blood collection system |
| CN109621186A (en) * | 2019-01-28 | 2019-04-16 | 黄智勇 | A kind of Intensive Care Therapy sampling apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9320493B2 (en) * | 2014-07-08 | 2016-04-26 | Nadarasa Visveshwara | System and method for measuring fluidics in arteries |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374648A (en) * | 2016-05-17 | 2017-11-24 | 爱康医学农业合作协会有限公司 | Flushable Fluid Handling Component |
| CN208709875U (en) * | 2017-04-28 | 2019-04-09 | 南昌大学第二附属医院 | Blood pressure monitoring blood collection device and blood pressure monitoring blood collection system |
| CN109621186A (en) * | 2019-01-28 | 2019-04-16 | 黄智勇 | A kind of Intensive Care Therapy sampling apparatus |
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