CN221690913U - An invasive blood pressure sensor kit - Google Patents

Abstract

The present application discloses an invasive blood pressure sensor kit, which includes a three-way rotary valve including a sensing pipe port and a working pipe port, wherein the sensing pipe port is connected to a pressure sensing unit, and the sensing pipe port is also connected to the working pipe port through a flushing pipeline; a flow rate controller arranged in the flushing pipeline includes a roller and a shell, wherein the shell is provided with a motion channel for the roller to move, and a motion guide groove is provided on the side wall of the motion channel, the roller is connected to the motion guide groove, and points in the direction of the outlet along the inlet of the motion channel, and the distance between the motion guide groove and the channel bottom wall of the motion channel gradually decreases, and a pressure plate is provided at the outlet of the motion channel, the pressure plate is connected to the shell through an elastic plate, the pressure plate is provided between the motion guide groove and the channel bottom wall, and the pressure plate is provided with an extrusion plane facing the channel bottom wall; the flushing pipeline passes between the roller and the channel bottom wall, and between the pressure plate and the channel bottom wall to leave the motion channel; when the roller moves to the outlet of the motion channel, the pressure plate is squeezed so that the extrusion plane squeezes and closes the flushing pipeline.

Description

An invasive blood pressure sensor kit

Technical Field

The present application belongs to the field of medical device technology, and specifically relates to an invasive blood pressure sensor kit.

Background Art

Invasive blood pressure monitoring refers to a method of directly measuring blood pressure by inserting a catheter and some monitoring probes directly into the human blood vessel cavity or heart cavity through the human body surface. It is mainly for patients with unstable vital signs. The measurement principle is to first place the catheter through puncture and place it in the blood vessel of the measured part. One end of the catheter is connected to the blood vessel, and the other end is connected to the pressure sensor. The catheter is filled with physiological saline or other solutions through the infusion device structure. The solution filling the catheter has the function of pressure transmission. The pressure in the blood vessel will be transmitted to the external pressure sensor through the liquid in the catheter, so that the dynamic waveform of the real-time pressure change in the blood vessel can be obtained by using the pressure sensor. Through a specific calculation method, the systolic pressure, diastolic pressure and mean arterial pressure of the blood vessel at the measured part can be obtained. The pressure sensor is connected to the monitor, and the monitor displays the blood pressure value and waveform in real time, which can show the dynamic blood pressure, so as to adjust the injected medicine amount in real time according to the measured blood pressure.

Arterial blood sampling is usually performed for blood gas analysis to timely understand the body's blood oxygen saturation, assist medical staff in timely judging the oxygen supply in the blood, and promptly discover oxygen supply problems in the patient's body. Arterial blood sampling is one of the important means to understand the patient's fluid balance and blood oxygen status.

In order to reduce harm to patients, blood is often drawn from patients using invasive blood pressure sensors in clinical practice. However, blood is likely to remain at the blood collection port during blood collection, and invasive blood pressure sensors sometimes need to be worn for a week or even longer. Blood remaining at the blood collection port during blood collection is likely to cause tube contamination, thereby affecting the patient's life and health.

Utility Model Content

In order to reduce the blood residue at the tube mouth when drawing blood using an invasive blood pressure sensor kit and reduce the possibility of the tube mouth being contaminated, the present application provides an invasive blood pressure sensor kit.

An invasive blood pressure sensor kit includes: an infusion pipeline, the infusion pipeline is connected to a three-way rotary valve; the three-way rotary valve includes a sensing pipe port and a working pipe port, the sensing pipe port is connected to a pressure sensing unit, and the sensing pipe port is also connected to the working pipe port through a flushing pipeline; a flow rate controller arranged in the flushing pipeline, the flow rate controller includes a roller and a shell, the shell is provided with a motion channel, the motion channel runs through the shell, the side wall of the motion channel is provided with a motion guide groove, the end of the roller is connected to the motion guide groove, and can move along the motion guide groove in the extension direction of the motion channel, along the motion guide groove The inlet of the channel points in the direction of the outlet, and the distance between the moving guide groove and the bottom wall of the moving channel gradually decreases. A pressure plate is provided at the outlet of the moving channel, and the pressure plate is connected to the shell through an elastic plate. The pressure plate is provided between the moving guide groove and the bottom wall of the channel, and the pressure plate is provided with an extrusion plane facing the bottom wall of the channel; the flushing pipeline passes between the roller and the bottom wall of the channel, and between the pressure plate and the bottom wall of the channel to leave the moving channel; when the roller moves to the outlet of the moving channel, the extrusion pressure plate moves toward the bottom wall of the channel, and the extrusion plane squeezes the flushing pipeline to close the flushing pipeline.

In one embodiment of the present application, a clamping groove is provided in the motion guide groove at the outlet of the motion channel, and the clamping groove is arranged on the groove wall of the motion guide groove away from the bottom wall of the channel; the extrusion plane squeezes the flushing pipeline, and after the flushing pipeline is closed, the end of the roller can be clamped into the clamping groove to limit the movement of the roller along the motion channel.

In one embodiment of the present application, the motion guide groove includes an inclined section and a parallel section, and the inclined section and the parallel section are connected in sequence along the direction from the inlet of the motion channel to the outlet; along the direction from the inlet of the motion channel to the outlet, the distance between the inclined section and the bottom wall of the channel gradually decreases, and the distance between the parallel section and the bottom wall of the channel is equal.

In one embodiment of the present application, the bottom wall of the channel includes a clamping plane, the clamping plane is provided with a clamping protrusion, the clamping protrusion extends in the transverse direction of the movement channel, and the clamping plane and the squeezing plane cooperate to close the flushing pipeline.

In one embodiment of the present application, the bottom wall of the channel is a plane.

In one embodiment of the present application, the invasive blood pressure sensor kit also includes a shunt tube, which is arranged in the working pipe opening. The extension direction of the shunt tube is the same as the extension direction of the working pipe opening. The diameter of the shunt tube is smaller than the inner diameter of the working pipe opening. The outer wall of the shunt tube and the inner wall of the working pipe opening form a flushing cavity, and the flushing pipeline is connected to the flushing cavity; a plurality of connecting holes are provided on the side wall of the shunt tube.

In one embodiment of the present application, a plurality of communication holes are arranged in an array around the axis of the shunt tube.

In one embodiment of the present application, the inner diameter of the flow dividing pipe gradually increases along the axial outward direction of the working pipe opening.

In one embodiment of the present application, the invasive blood pressure sensor kit further includes a sealing cap capable of closing the working tube port.

In one embodiment of the present application, the flushing pipeline is a transparent tube.

The present application has at least the following beneficial effects:

1. By flushing the pipeline, the liquid in the sensing pipeline can flush the residual blood at the working pipe mouth without passing through the inside of the three-way rotary valve, avoiding blood coagulation at the working pipe mouth and forming thrombus, and preventing thrombus from entering the human body through the pipeline during the next blood drawing operation.

2. The flow rate controller in the present application can control the liquid flow rate in the flushing pipeline on the one hand, and on the other hand, when the flushing is completed, the pulley squeezes the pressure plate so that the extrusion plane squeezes the pipeline, thereby reducing the liquid residue in the flushing pipeline by plane extrusion, thereby reducing the possibility of contamination.

3. When using a syringe to draw blood through the working tube opening, the syringe nipple is inserted into the working tube opening and enters the shunt tube. After the blood drawing is completed, the syringe nipple leaves the shunt tube. At this time, there may be blood residue in the shunt tube. After the liquid in the flushing pipeline enters the flushing cavity, it enters the shunt tube through multiple connecting holes, and changes from one fluid to multiple fluids, thereby flushing the blood in the shunt tube and reducing the blood residue in the shunt tube.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an exemplary embodiment of the present application;

FIG2 is a perspective schematic diagram of a schematic implementation of a flow rate controller in the present application;

FIG3 is a partial structural diagram of an exemplary embodiment of a flow rate controller in the present application;

FIG4 is a schematic structural diagram of a schematic implementation of a motion guide groove in the present application;

FIG5 is a schematic structural diagram of an exemplary embodiment of the roller squeezing the pressing plate in the present application;

FIG6 is a schematic structural diagram of a schematic implementation of a three-way rotary valve in the present application;

FIG. 7 is a schematic structural diagram of a schematic implementation of a shunt tube in the present application.

In the figure:

100, three-way rotary valve; 101, sensing pipe port; 102, working pipe port; 103, patient end pipe port;

201. Flushing pipeline;

301, flow rate controller; 302, housing; 303, roller; 304, slot; 305, motion guide groove; 306, channel bottom wall;

307, inclined section; 308, parallel section; 309, clamping protrusion;

401, pressing plate; 402, elastic plate;

501, shunt pipe; 502, connecting hole; 503, flushing cavity;

601. Sealing cap; 602. Pressure sensing unit.

DETAILED DESCRIPTION

In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods of the present application are now described with reference to the accompanying drawings. The same reference numerals in the drawings represent components with the same structure or similar structures but the same functions.

In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked.

Please refer to Figures 1 to 7 for an understanding of this application.

Referring to FIG1 , an invasive blood pressure sensor kit includes: an infusion line, the infusion line connects an infusion bag and a patient's arterial blood vessel, the infusion line is connected to a three-way rotary valve 100, the three-way rotary valve 100 includes a sensing tube port 101, a patient-end tube port 103 and a working tube port 102, the sensing tube port 101 is connected to a pressure sensing unit, the patient-end tube port 103 can be connected to the patient's arterial blood vessel, when measuring arterial blood pressure, the patient-end tube port 103 and the sensing tube port 101 need to be opened, the infusion line is connected to the arterial blood vessel, the liquid in the infusion line can transmit the blood pressure fluctuation in the arterial blood vessel, the pressure sensing unit can measure the liquid fluctuation in the infusion line, thereby obtaining the arterial blood pressure.

When using an invasive blood pressure sensor to draw blood, it is necessary to close the sensing tube port 101, open the patient-end tube port 103 and the working tube port 102, and use the syringe nipple to connect to the working tube port 102 to extract the liquid in the infusion line between the patient-end tube port 103 and the patient to prevent the liquid in the infusion line from affecting the blood test results. Then use another syringe to draw blood. After the blood drawing operation, a small amount of blood may remain in the working tube port 102, so the working tube port 102 needs to be flushed.

Referring to FIGS. 1 to 5 , the sensing nozzle 101 is also connected to the working nozzle 102 through a flushing pipeline 201. A flow rate controller 301 is provided in the flushing pipeline 201. The flow rate controller 301 includes a roller 303 and a shell 302. The shell 302 is provided with a motion channel. The motion channel runs through the shell 302. A motion guide groove 305 is provided on the side wall of the motion channel. The end of the roller 303 is connected to the motion guide groove 305 and can move along the motion guide groove 305 in the extension direction of the motion channel, along the direction of the inlet of the motion channel pointing to the outlet. The distance between the motion guide groove 305 and the channel bottom wall 306 of the motion channel gradually decreases. When the roller 303 is located at the inlet of the motion channel, the liquid in the infusion pipeline can flow to the flushing pipeline 201, thereby flushing the working nozzle 102. The user can control the position of the roller 303 relative to the motion channel, thereby adjusting the flow rate in the flushing channel. The liquid flow rate is such that when the sensing tube port 101 is closed, the flushing line 201 is used to directly transport the liquid in the infusion line to the working tube port 102, so as to flush the blood that may exist in the working tube port 102. When the flushing is completed, the roller 303 can be moved to the position at the exit of the movement channel to close the flushing line 201. Of course, when the flushing line 201 is not needed, the position of the roller 303 can also be adjusted to close the flushing line 201, open the sensing tube port 101 and the patient end tube port 103, and the liquid in the infusion bag can enter the patient end tube port 103 through the sensing tube port 101, so as to measure the arterial blood pressure; when the roller 303 is adjusted to make the flushing line 201 connected, the pressure plate 401 moves in the direction away from the bottom wall 306 of the channel under the action of the elastic plate 402, so that the pressure plate 401 no longer closes the flushing line 201 by squeezing.

A pressure plate 401 is provided at the outlet of the motion channel, and the pressure plate 401 is connected to the shell 302 through an elastic plate 402. The pressure plate 401 is provided between the motion guide groove 305 and the bottom wall 306 of the channel, and the pressure plate 401 is provided with an extrusion plane facing the bottom wall 306 of the channel; the flushing pipeline 201 passes between the roller 303 and the bottom wall 306 of the channel, and leaves the motion channel between the pressure plate 401 and the bottom wall 306 of the channel; when the roller 303 moves to the outlet of the motion channel, the pressure plate 401 is squeezed to move toward the bottom wall 306 of the channel, and the extrusion plane squeezes the flushing pipeline 201 to close the flushing pipeline 201, and the pressure plate 401 has an inclined direction, that is, along the direction of the motion channel outlet pointing to the motion channel inlet, and the pressure plate gradually approaches the bottom wall 306 of the channel, and the inclined direction of the pressure plate in FIG. 3 can be seen. , so that when the roller 303 squeezes the pressing plate 401, the pressing plate 401 can more easily enter between the roller 303 and the bottom wall 306 of the channel, so that the pressing plate 401 can squeeze the flushing pipeline 201, and use the extrusion plane to perform a planar extrusion on the flushing pipeline 201, thereby closing the flushing pipeline 201 and preventing the flushing pipeline 201 from being connected to the outside world, causing contamination in the infusion pipeline. On the other hand, the setting of the pressing plate 401 can discharge the liquid between the roller 303 and the working nozzle 102 in the flushing pipeline 201 as much as possible, thereby preventing the liquid between the roller 303 and the working nozzle 102 from being contaminated, and due to the inclined direction of the pressing plate 401, the pressing plate 401 can gradually squeeze out a section of the liquid in the flushing pipeline 201.

Preferably, the outlet of the movement channel is arranged at the place where the flushing pipeline 201 is connected to the working nozzle 102, so that the pressure plate 401 is used to discharge the liquid between the roller 303 and the working nozzle 102.

Referring to Figure 3, in one embodiment of the present application, a motion guide groove 305 at the outlet of the motion channel is provided with a clamping groove 304, and the clamping groove 304 is arranged on the groove wall of the motion guide groove 305 away from the bottom wall 306 of the channel; the extrusion plane squeezes the flushing pipeline 201, and after the flushing pipeline 201 is closed, since the roller 303 squeezes the flushing pipeline 201 through the pressure plate 401, the tube wall of the flushing pipeline 201 gives the roller 303 a force away from the pressure plate 401 through the pressure plate 401, and the end of the roller 303 can be clamped into the clamping groove 304 to limit the movement of the roller 303 along the motion channel, so as to avoid the roller 303 moving toward the inlet of the motion channel when the flushing pipeline 201 needs to be closed, causing the flushing pipeline 201 to connect the infusion pipeline and the working nozzle 102, so that the setting of the clamping groove 304 can effectively reduce the possibility of risks.

Referring to Figure 4, further, in one embodiment of the present application, the motion guide groove 305 includes an inclined section 307 and a parallel section 308, and the inclined section 307 and the parallel section 308 are connected in sequence along the direction from the inlet of the motion channel to the outlet; along the direction from the inlet of the motion channel to the outlet, the distance between the inclined section 307 and the bottom wall 306 of the channel gradually decreases, and the distance between the parallel section 308 and the bottom wall 306 of the channel is equal.

Since the roller 303 squeezes the flushing pipeline 201 through the pressure plate 401, the tube wall of the flushing pipeline 201 applies a force to the roller 303 in the direction away from the pressure plate 401 through the pressure plate 401, and points in the direction of the outlet along the inlet of the moving channel. The distance between the moving guide groove 305 and the channel bottom wall 306 of the moving channel gradually decreases. When the roller 303 is in the inclined section 307, the roller 303 may move toward the direction close to the inlet of the moving channel under the force given by the flushing pipeline 201, and the distance between the parallel section 308 and the channel bottom wall 306 is equal everywhere, so that the roller 303 is not affected by the component force given by the flushing pipeline 201 along the extension direction of the parallel section 308, so that the roller 303 can more stably close the flushing pipeline 201.

4 , preferably, the slot 304 is disposed in the parallel section 308 , so that when the flushing pipeline 201 exerts a force on the roller 303 , the roller 303 is not easily disengaged from the slot 304 , making the position of the roller 303 more stable, thereby ensuring the sealing effect on the flushing pipeline 201 .

Referring to Figure 3, in one embodiment of the present application, the channel bottom wall 306 includes a clamping plane, and the clamping plane is provided with a clamping protrusion 309, and the clamping protrusion 309 extends in the transverse direction of the movement channel. The combined action of the clamping plane and the extrusion plane can close the flushing pipeline 201, thereby achieving a better sealing effect on the flushing pipeline 201 and preventing the flushing pipeline 201 from being connected.

Referring to FIG. 3 , in one embodiment of the present application, the channel bottom wall 306 is a plane, so that the extrusion plane of the pressure plate 401 can better perform planar extrusion on the flushing pipeline 201 with the channel bottom wall 306 , thereby ensuring the sealing effect on the flushing pipeline 201 .

In one embodiment of the present application, the flushing pipeline 201 is a transparent tube, so that medical staff can observe the flow of liquid in the pipeline conveniently.

Referring to Figures 6 and 7, in one embodiment of the present application, the invasive blood pressure sensor kit also includes a shunt tube 501, which is arranged in the working pipe mouth 102. The extension direction of the shunt tube 501 is the same as the extension direction of the working pipe mouth 102. The diameter of the shunt tube 501 is smaller than the inner diameter of the working pipe mouth 102. The outer wall of the shunt tube 501 and the inner wall of the working pipe mouth 102 form a flushing cavity 503, and the flushing pipeline 201 is connected to the flushing cavity 503; a plurality of connecting holes 502 are provided on the side wall of the shunt tube 501.

When using a syringe to draw blood through the working tube mouth 102, the syringe nipple is inserted into the working tube mouth 102 and enters the shunt tube 501. After the blood drawing is completed, the syringe nipple leaves the shunt tube 501. At this time, there may be blood residue in the shunt tube 501. After the liquid in the flushing pipeline 201 enters the flushing cavity 503, it enters the shunt tube 501 through multiple connecting holes 502, and changes from one fluid to multiple fluids, so that the blood in the shunt tube 501 can be flushed, reducing the blood residue in the shunt tube 501.

In one embodiment of the present application, a plurality of communication holes 502 are arranged in an array around the axis of the shunt tube 501 .

The liquid enters the shunt tube 501 through the flushing cavity 503 and each connecting hole 502, thereby flushing the blood that may remain in the shunt tube 501. By arranging the multiple connecting holes 502 in an array around the axis of the shunt tube 501, the liquid can flush the shunt tube 501 in all directions, thereby improving the cleanliness of the shunt tube 501.

In one embodiment of the present application, the inner diameter of the shunt tube 501 gradually increases along the axial outward direction of the working tube opening 102, thereby facilitating the insertion of the syringe nipple and the flow of the flushing liquid in the shunt tube 501 to the outside.

In one embodiment of the present application, the invasive blood pressure sensor kit further includes a sealing cap 601 capable of sealing the working nozzle 102. When the working nozzle 102 is not in use, the sealing cap 601 can be used to seal the working nozzle 102 to prevent the working nozzle 102 from being contaminated.

It should be understood that although this specification is described according to various implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

The series of detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present application. They are not intended to limit the scope of protection of the present application. Any equivalent implementation scheme or changes that do not deviate from the technical spirit of the present application, such as combination, division or repetition of features, should be included in the scope of protection of the present application.

Claims (10)

1. An invasive blood pressure sensor kit, comprising:

The infusion pipeline is communicated with a three-way rotary valve;

The three-way rotary valve comprises a sensing pipe orifice and a working pipe orifice, wherein the sensing pipe orifice is communicated with the pressure sensing unit, and the sensing pipe orifice is also communicated with the working pipe orifice through a flushing pipeline;

the flow rate controller comprises a roller and a shell, wherein the shell is provided with a movement channel, the movement channel penetrates through the shell, the side wall of the movement channel is provided with a movement guide groove, the end part of the roller is connected with the movement guide groove and can move along the movement guide groove in the extending direction of the movement channel, the distance between the movement guide groove and the bottom wall of the movement channel is gradually reduced along the direction of the inlet of the movement channel to the outlet, the outlet of the movement channel is provided with a pressing plate, the pressing plate is connected with the shell through an elastic plate, the pressing plate is arranged between the movement guide groove and the bottom wall of the channel, and the pressing plate is provided with an extrusion plane facing the bottom wall of the channel;

The flushing pipeline passes through the gap between the roller and the bottom wall of the channel, and the gap between the pressing plate and the bottom wall of the channel leaves the motion channel;

When the roller moves to the outlet of the movement channel, the pressing plate is extruded to move towards the bottom wall of the channel, and the extrusion plane extrudes the flushing pipeline to seal the flushing pipeline.

2. An invasive blood pressure sensor set according to claim 1, characterized in that,

The moving guide groove at the outlet of the moving channel is provided with a clamping groove, and the clamping groove is arranged on the groove wall of the moving guide groove far away from the bottom wall of the channel;

The extrusion plane extrudes the flushing pipeline, and after the flushing pipeline is closed, the end part of the roller can be clamped into the clamping groove so as to limit the movement of the roller along the movement channel.

3. An invasive blood pressure sensor set according to claim 1, characterized in that,

The motion guide groove comprises an inclined section and a parallel section, and the inclined section and the parallel section are sequentially connected along the direction that the inlet of the motion channel points to the outlet;

Along the direction that the inlet of the motion channel points to the outlet, the distance between the inclined section and the bottom wall of the channel gradually decreases, and the distance between the parallel section and the bottom wall of the channel is equal.

4. An invasive blood pressure sensor set according to claim 1, characterized in that,

The channel bottom wall comprises a clamping plane, the clamping plane is provided with a clamping protrusion, the clamping protrusion extends transversely to the movement channel, and the flushing pipeline can be closed under the combined action of the clamping plane and the extrusion plane.

5. An invasive blood pressure sensor set according to claim 1, characterized in that,

The bottom wall of the channel is a plane.

6. An invasive blood pressure sensor set according to claim 1, characterized in that,

The invasive blood pressure sensor kit further comprises a shunt tube, the shunt tube is arranged in the working tube orifice, the extending direction of the shunt tube is the same as that of the working tube orifice, the diameter of the shunt tube is smaller than the inner diameter of the working tube orifice, a flushing cavity is formed by enclosing the outer wall of the shunt tube and the inner wall of the working tube orifice, and the flushing pipeline is communicated with the flushing cavity;

the side wall of the shunt tube is provided with a plurality of communication holes.

7. An invasive blood pressure sensor set according to claim 6, characterized in that,

The plurality of communication holes are arranged in an array about an axis of the shunt.

8. An invasive blood pressure sensor set according to claim 6, characterized in that,

The inner diameter of the shunt tube is gradually increased along the axial outward direction of the working tube orifice.

9. An invasive blood pressure sensor set according to claim 1, characterized in that,

The invasive blood pressure sensor kit further comprises a sealing cap capable of sealing the working tube orifice.

10. An invasive blood pressure sensor set according to claim 1, characterized in that,

The flushing pipeline is a transparent pipe.