CN209865029U

CN209865029U - Intensive care sampling device

Info

Publication number: CN209865029U
Application number: CN201920144539.2U
Authority: CN
Inventors: 黄智勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2019-12-31
Anticipated expiration: 2029-01-28

Abstract

The utility model discloses an intensive care sampling device, its characterized in that: the medical pressure sensor is connected with the switcher, the arterial catheter, the central venous catheter, the positive pressure connector and the medical pressure sensor, the switcher is provided with a first connector, a second connector, a third connector, a fourth connector and a fifth connector, the first connector is communicated with the arterial catheter through a first infusion tube, the positive pressure connector is mounted on the second connector, the third connector is communicated with the central venous catheter through a second infusion tube, and the fifth connector is connected with an exhaust pipe; and blood sampling devices are respectively arranged on the first infusion tube and the second infusion tube. The utility model has the advantages that: a switcher with multiple channels is matched with an arterial catheter, a central venous catheter, a monitor and a positive pressure joint to form a multifunctional monitoring and sampling device; the blood pressure monitoring device can be used for switching and monitoring arterial and central venous blood pressure and collecting blood samples, and more importantly, the operation problems caused by a multi-stage valve can be avoided.

Description

Intensive care sampling device

Technical Field

The utility model relates to an intensive care sampling device, in particular to an intensive care sampling device which has small pollution probability and can realize multi-catheter monitoring.

Background

Intensive care therapy means that various advanced medical technologies and modern monitoring and rescuing equipment are applied to various critical patients for receiving and treating to intensively treat and nurse the critical patients. To ensure the survival and the subsequent life quality of the patient to the maximum extent. The requirements of indoor buildings and facilities in the intensive care unit are higher than those of a common ward, so that critical patients can be conveniently monitored and rescued in time to the maximum extent. The medical instruments are not only necessary in the general ward, but also equipped with various monitoring instruments to monitor various vital signs of the patient in real time.

The frequently used blood pressure monitoring comprises invasive artery monitoring and central vein monitoring, wherein the arterial blood pressure monitoring is a method for directly measuring the intra-arterial blood pressure by placing an arterial catheter into an artery, and is suitable for intra-operative and post-operative monitoring of patients suffering from shock, severe diseases, severe peripheral vasoconstriction, major surgery or life-threatening surgery and monitoring of other patients suffering from high-risk conditions; the central venous pressure monitoring refers to monitoring the pressure of the right atrium and thoracic sections of the superior and inferior vena cava, and can judge the comprehensive condition of the blood volume, the cardiac function and the blood vessel tension of a patient.

In artery monitoring or vein monitoring, a catheter needs to be placed in an artery or a central vein, and the catheter is connected into a related monitor to ensure the accuracy of data; also, catheters are typically provided with blood collection devices for collecting blood gas samples from patients.

At present, the conventional blood sampling device adopts a plurality of three-way valves or four-way valves which are connected in series to carry out necessary operations such as blood sampling, exhaust and the like, and although the conventional blood sampling device has the advantages of difficult blood leakage, safety and reliability, the conventional blood sampling device only can meet the blood sampling requirement of a single catheter and is limited in use; the number of the valves is large, usually more than two, the use is complex, and the technical requirements on puncture medical care personnel are very high; and still need use the closing cap on some three-way valves, when dismantling the closing cap and carry out corresponding operation, the easy problem that appears the closing cap and drop the pollution, it is troublesome.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an intensive care sampling device that can reduce the operation degree of difficulty and can realize the monitoring of many pipes.

In order to solve the technical problem, the utility model adopts the technical scheme that: intensive care sampling device, its characterized in that: comprises a switcher, an arterial catheter, a central venous catheter, a positive pressure joint and a medical pressure sensor;

the switcher comprises a shell, an inner core, a return spring and an upper cover,

the shell is a hollow cylindrical structure which is vertically arranged along an axis, the center of the shell is provided with a cylindrical accommodating cavity which extends from the top end of the shell to the bottom of the shell along the vertical direction, and the bottom of the cylindrical accommodating cavity is provided with a spring mounting column; the outer circumferential surface of the shell is integrally formed with a first joint, a second joint, a third joint and a fourth joint which are communicated with the cylindrical containing cavity, and the first joint, the second joint, the third joint and the fourth joint are sequentially and uniformly distributed on the outer circumferential surface of the shell in an annular array;

the inner core is arranged in a cylindrical accommodating cavity of the shell, the inner core is a cylinder which can be just embedded into the cylindrical accommodating cavity, a fifth joint is integrally formed in the center of the upper end face of the inner core, a positioning pit is formed in the center of the lower end face of the inner core, the inner core is provided with a horizontal first channel, a horizontal second channel and a horizontal third channel, the horizontal first channel and the horizontal second channel are located on the same horizontal plane, the axes of the horizontal first channel and the horizontal second channel are mutually vertical, the outer ends of the first horizontal channel and the second horizontal channel extend to the outer circumferential face of the inner core, the inner ends of the first horizontal channel and the second horizontal channel are mutually communicated, the third horizontal channel is located right above the second horizontal channel, the axes of the third horizontal channel are mutually parallel, the outer end of the third horizontal channel extends to the outer circumferential face of the; the outer end of the third horizontal channel and the outer end of the second horizontal channel are arranged in the opposite direction on the outer circumferential surface of the inner core;

the reset spring is arranged between the lower end face of the inner core and the shell, the upper end of the reset spring is embedded into the inner core positioning pit, and the lower end of the reset spring is sleeved on the spring mounting column;

the upper cover is connected to the top end of the shell through threads, and a central hole for the fifth joint to penetrate through is formed in the center of the upper cover;

the inner core is respectively positioned at the upper limit and the lower limit in the shell through the upper cover and the spring mounting column, and when the inner core is positioned at the upper limit, the horizontal first channel and the horizontal second channel are positioned at the same height as the first joint, the second joint, the third joint and the fourth joint; when the inner core is positioned at the lower limit position, the horizontal third channel, the first joint, the second joint, the third joint and the fourth joint are positioned at the same height;

the first joint is communicated with an arterial catheter through a first infusion tube, the second joint is provided with a positive pressure joint for communication, the third joint is communicated with a central venous catheter through a second infusion tube, the fourth joint is directly connected with a medical pressure sensor, and the fifth joint is connected with an exhaust pipe; and blood sampling devices are respectively arranged on the first infusion tube and the second infusion tube.

The inner surface of the shell is provided with a layer of annular antibacterial sealing lining.

The upper and lower parts of the outer circumferential surface of the inner core are provided with sealing grooves extending along the circumferential direction, and O-shaped sealing rings are embedded in the sealing grooves.

The positive pressure joint comprises a cover body, a seat body, an elastic plug and an anti-lateral bending spring;

the cover body is of a hollow structure, the upper end of the cover body is of a luer female joint structure, the inner cavity of the cover body mainly comprises a small cylindrical upper cavity, a circular truncated cone middle cavity and a large cylindrical lower cavity, the lower end surface of the cover body is tightly attached to the upper end surface of the base body and is fixedly connected, and a plurality of guide grooves which extend along the axial direction of the cover body and are uniformly distributed are arranged on the inner wall of the large cylindrical lower cavity of the cover body;

the center of the upper end of the seat body is provided with a bulge extending into the lower cavity of the cover body, the side wall of the bulge is provided with a flow guide hole, the upper end surface of the bulge is provided with a spring mounting part, the lower end of the seat body is of a Ruhr male seat body structure, the center of an internal thread shell of the Ruhr male seat body is provided with an external conical sleeve, and a central channel of the external conical sleeve is communicated with the flow guide hole of the bulge;

the elastic plug is mainly composed of a small cylindrical upper end, a circular truncated cone-shaped middle section and a hollow corrugated pipe-shaped lower end, the elastic plug is arranged in the cover body, and the lower end of the elastic plug is arranged on a sleeve-shaped bulge in the center of the upper end of the base body through an adhesive;

prevent the spring that bends sideways, prevent that the spring that bends sideways installs on bellied spring mounting portion, and be located the elasticity stopper.

The utility model has the advantages that: a switcher with multiple channels is matched with an arterial catheter, a central venous catheter, a monitor and a positive pressure joint to form a multifunctional monitoring and sampling device; the blood pressure monitoring device can be used for switching and monitoring the blood pressure of an artery and a central vein, can also be used for collecting blood samples in the artery or the vein according to medical requirements, and more importantly, can avoid the operation problem caused by a multi-stage valve.

Drawings

Fig. 1 is the schematic diagram of the intensive care sampling device of the present invention.

Fig. 2 is a schematic diagram of the middle switch of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a cross-sectional view taken along line B-B of fig. 2.

Fig. 5 is a front view of the housing of the switch device of the present invention.

Fig. 6 is a top view of the housing of the switch device of the present invention.

Fig. 7 is a front view of the inner core of the middle switch of the present invention.

Fig. 8 is a cross-sectional view taken along line C-C of fig. 7.

Fig. 9 is a schematic view of the structure of the positive pressure joint of the present invention.

Detailed Description

The intensive care sampling device of the utility model is shown in fig. 1, comprising a switcher 1, an arterial catheter 2 connected with the switcher 1, a central venous catheter 3, a positive pressure joint 4 and a medical pressure sensor 10, wherein the switcher 1 is provided with a first joint, a second joint, a third joint, a fourth joint and a fifth joint, the first joint is communicated with the arterial catheter 2 through a first infusion tube 5, the second joint is provided with the positive pressure joint 4, the third joint is communicated with the central venous catheter 3 through a second infusion tube 6, and the fifth joint is connected with an exhaust pipe 8; blood sampling devices 9 are mounted on both the first infusion tube 5 and the second infusion tube 6. The medical pressure sensor 10 is provided with two mutually communicated interfaces and a signal output connector, one interface of the medical pressure sensor 10 is directly connected with the fourth connector, the other interface is connected with the continuous flushing device through the pressure flushing pipe 7, the connector signal output connector is connected into the monitor, and the interface connected with the fourth connector on the medical pressure sensor 10 is a female connector of a luer connector.

As shown in fig. 2, 3 and 4, the switcher 1 includes a housing 11, an inner core 12, a return spring 13 and an upper cover 14,

as shown in fig. 5 and 6, the housing 11 is a hollow cylindrical structure with an axis vertically arranged, the center of the housing has a cylindrical accommodating cavity 115 extending from the top end of the housing to the bottom of the housing along the vertical direction, and the bottom of the cylindrical accommodating cavity 115 has a spring mounting post 116; a first connector 111, a second connector 112, a third connector 113 and a fourth connector 114 which are communicated with the cylindrical containing cavity are integrally formed on the outer circumferential surface of the shell 11, and the first connector 111, the second connector 112, the third connector 113 and the fourth connector 114 are sequentially and uniformly distributed on the outer circumferential surface of the shell 11 in an annular array; the inner surface of the housing 11 has an annular antimicrobial sealing liner. In this embodiment, the fourth connector 114 is a male connector structure of a luer connector, so as to be directly connected with a female connector of the luer connector at one end of the medical pressure sensor.

As shown in fig. 7 and 8, the inner core 12 is disposed in the cylindrical cavity of the housing 11, the inner core 12 is a cylinder that can be inserted into the cylindrical cavity, a fifth joint 124 is integrally formed in the center of the upper end face of the inner core, a positioning pit 125 is formed in the center of the lower end face of the inner core 12, the inner core is provided with a horizontal first channel 121, a horizontal second channel 122 and a horizontal third channel 123, the horizontal first channel 121 and the horizontal second channel 122 are located on the same horizontal plane, the axes of the horizontal first channel 121 and the horizontal second channel 122 are perpendicular to each other, the outer ends of the first horizontal channel 121 and the second horizontal channel 122 extend to the outer circumferential face of the inner core, the inner ends of the first horizontal channel 121 and the second horizontal channel 122 are communicated with each other, the third horizontal channel 123 is located right above the second horizontal channel 122, the axes are parallel to each other, the outer end of the third horizontal channel 123 extends to the outer circumferential surface of the inner core, and the inner end of the third horizontal channel 123 is communicated with the fifth joint 124; the outer end of the third horizontal passage 123 and the outer end of the second horizontal passage 122 are oppositely arranged on the outer circumferential surface of the inner core 12; further, seal grooves 126 extending in the circumferential direction are formed in the upper and lower portions of the outer circumferential surface of the inner core 12, and O-rings are fitted into the seal grooves 126.

The return spring 13 is arranged between the lower end face of the inner core 12 and the shell 11, the upper end of the return spring 13 is embedded into the inner core positioning pit 125, and the lower end of the return spring 13 is sleeved on the spring mounting column 116; the upper cap 14 is screwed to the top end of the housing 11, and the center of the upper cap 14 has a center hole for the fifth connector 124 to pass through.

In the present invention, the inner core 12 is respectively limited at the upper and lower ends in the housing 11 by the upper cover 14 and the spring mounting post 116, and when the inner core 12 is limited at the upper end, the horizontal first channel 121 and the horizontal second channel 122 are located at the same height as the first joint 111, the second joint 112, the third joint 113 and the fourth joint 114; when the inner core 12 is positioned at the lower limit position, the horizontal third channel 123 is positioned at the same height as the first joint 111, the second joint 112, the third joint 113 and the fourth joint 114.

In addition, in order to more conveniently adjust the position of the inner core 12 and achieve logical conduction between each horizontal channel and each joint, an operating handle (not shown in the figure) is connected to the fifth joint 124 at the top end of the inner core 12, and positions of the horizontal first channel 121, the horizontal second channel 122 and the horizontal third channel 123 inside the inner core 12 can be marked on the operating handle, and of course, indication contents corresponding to the marks on the operating handle can also be set on the upper cover 14.

As the utility model discloses more specific embodiment case, the utility model provides a malleation connects 4 has adopted the structure of preventing deflecting, avoids the elasticity stopper during operation to appear the lateral bend and causes abnormal work:

as shown in fig. 9, the positive pressure joint 4 includes a cover 41, a seat 42, an elastic plug 43, and a lateral bending prevention spring 44;

the cover body 41 is of a hollow structure, the upper end of the cover body 41 is of a luer female joint structure, the inner cavity of the cover body 41 mainly comprises a small cylindrical upper cavity, a circular truncated cone middle cavity and a large cylindrical lower cavity, the lower end face of the cover body 41 is tightly attached to the upper end face of the base body 42 and is fixedly connected, and a plurality of guide grooves which extend along the axial direction of the cover body and are uniformly distributed are arranged on the inner wall of the large cylindrical lower cavity of the cover body 41.

The base 42 has a protrusion extending into the lower cavity of the cover at the center of the upper end of the base 42, the sidewall of the protrusion is provided with a flow guide hole 45, the upper end surface of the protrusion is provided with a spring mounting portion, the lower end of the base is of a luer male base structure, an external conical sleeve is arranged at the center of the internal thread shell of the luer male base, and a central channel 46 of the external conical sleeve is communicated with the flow guide hole 45 of the protrusion.

The elastic plug 43 is mainly composed of a small cylindrical upper end, a circular truncated cone-shaped middle section and a hollow corrugated tube-shaped lower end, the elastic plug 43 is arranged in the cover body 41, and the lower end of the elastic plug is arranged on a bulge at the center of the upper end of the seat body 42 through an adhesive.

And a lateral bending prevention spring 44, the lateral bending prevention spring 44 being mounted on the protruded spring mounting portion and being located inside the elastic plug 43.

The working principle is as follows:

before use, the medical pressure sensor needs to be zeroed, air in the first infusion tube 5 and the second infusion tube 6 needs to be discharged,

in an initial state, the inner core 12 is in an upper limit position under the action of the return spring 13, the position of the inner core 12 is adjusted by rotating and pressing the operating handle, so that the inner core 12 overcomes the elastic deformation force of the return spring 13 and moves to a lower limit position, the horizontal third channel 123 is communicated with the fourth joint 114, and the medical pressure sensor is communicated with the atmosphere through the fourth joint, the horizontal third channel, the fifth joint and the exhaust pipe for zero setting;

then the inner core 12 is rotated through the operating handle, so that the horizontal first channel 121 and the horizontal second channel 122 are respectively communicated with the first joint 111 and the fourth joint 114; then the continuous flushing device sequentially passes through the pressure flushing pipe 7, the medical pressure sensor 10, the fourth joint 114, the horizontal second channel 122, the horizontal first channel 121 and the first joint 111 at a certain pressure to enter the first infusion pipe 5, and further exhausts the air in the first infusion pipe 5; correspondingly, the inner core 12 is rotated, so that the horizontal first channel 121 and the horizontal second channel 122 are respectively communicated with the fourth joint 114 and the third joint 113; injecting the injection liquid through the flusher, and discharging the air in the second infusion tube 6;

continuing to rotate the inner core 12, so that the horizontal first channel 121 and the horizontal second channel 122 are respectively communicated with the second connector 112 and the first connector 111, evacuating the air in the positive pressure connector 4 by using a syringe, and filling the backflow injection liquid in the positive pressure connector;

when monitoring the blood pressure, the inner core 12 is rotated as required, so that the first joint 111 and the fourth joint 114 are communicated or the fourth joint 114 and the third joint 113 are communicated, and the measurement of the arterial blood pressure or the central venous blood pressure on the corresponding passage can be carried out;

when the artery is used for blood collection, the inner core 12 is rotated to the corresponding position, the first connector 111 is communicated with the second connector 112, the artery catheter, the first infusion tube, the switcher and the positive pressure connector are further communicated, the flushing fluid is extracted from the positive pressure connector by adopting the injector, the blood in the artery flows back to the first infusion tube until the blood flows back to the blood collector 9, the blood can be collected by the needle tube puncture blood collector, after the blood collection is finished, the extracted flushing fluid is injected again through the positive pressure connector, and the blood enters the artery under the action of the flushing fluid; when the central vein is used for blood sampling, the inner core is correspondingly rotated to communicate the second joint with the third joint, and blood sampling is carried out in the same way.

Claims

1. An intensive care sampling device which characterized in that: comprises a switcher, an arterial catheter, a central venous catheter, a positive pressure joint and a medical pressure sensor; the switcher comprises a shell, an inner core, a return spring and an upper cover,

2. The intensive care sampling device of claim 1, wherein: the inner surface of the shell is provided with a layer of annular antibacterial sealing lining.

3. The intensive care sampling device of claim 1, wherein: the upper and lower parts of the outer circumferential surface of the inner core are provided with sealing grooves extending along the circumferential direction, and O-shaped sealing rings are embedded in the sealing grooves.

4. The intensive care sampling device of claim 1, wherein: the positive pressure joint comprises a cover body, a seat body, an elastic plug and an anti-lateral bending spring;