CN212327082U

CN212327082U - Blood storage device for extracorporeal circulation of cardiac surgery

Info

Publication number: CN212327082U
Application number: CN202021414403.8U
Authority: CN
Inventors: 刘燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-01-12
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a blood storage device for extracorporeal circulation of cardiac surgery, a liquid feeding pipe passes through an upper cover and is connected with a puncture outfit and a trapezoidal joint through a three-way joint, a filter screen is arranged in a soft bag, an independent space is formed in the soft bag after four sides of the filter screen and the inner wall of the right side of the soft bag are sealed and welded, the end of the liquid feeding pipe passes through the upper cover and the filter screen and is positioned between the filter screen and the right side wall of the soft bag, a liquid feeding pipe I is also arranged at the bottom of the soft bag, the upper ends of the first liquid inlet pipe and the second liquid inlet pipe respectively penetrate through the middle part of the soft bag and the lowest part of the filter screen and are positioned between the filter screen and the right side wall of the soft bag, the upper end of the first liquid inlet pipe is lower than that of the second liquid inlet pipe, and liquid outlet holes are respectively and uniformly arranged on the pipe wall parts, positioned between the lowest part of the filter screen and the upper cover, of the first liquid inlet pipe and the second liquid inlet pipe in a staggered mode at intervals. The invention can effectively reduce the contact between the blood in the bag and the air, and can ensure better filtering effect.

Description

Blood storage device for extracorporeal circulation of cardiac surgery

Technical Field

The utility model relates to a medical instrument, in particular to a blood storage device for extracorporeal circulation of cardiac surgery.

Background

During the direct-view heart surgery, the extracorporeal circulation is required to replace the heart and the lung of a human body to work, the systemic circulation and the respiratory function are maintained, most of the conventional extracorporeal circulation blood storage devices used at present are hard shells and open type designs, the pre-charging amount is large, and the extracorporeal circulation can be carried out only by using more pre-charging liquid to dilute blood. Secondly, the contact area of blood with foreign surfaces and air is large, which is easy to cause the activation of blood coagulation and fibrinolysis systems and the activation of complement to cause inflammatory reaction; thereby affecting the recovery of the patient after the operation and even causing various complications of the patient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a closed blood storage device combining soft and hard to solve the above-mentioned insufficiency. The technical scheme is as follows: the utility model provides a heart operation extracorporal circulatory system is with storing blood device which constitutes and includes the upper cover and installs positive negative pressure safety control valve and VAVD interface on the upper cover, and the filling tube passes the upper cover and is connected with puncture ware and trapezoidal joint through three way connection, its characterized in that: the lower part of the upper cover is connected with the soft bag, the soft bag is internally provided with a filter screen, four sides of the filter screen and the inner wall of the right side of the soft bag are hermetically welded to form an independent space in the soft bag, the tail end of the liquid feeding pipe penetrates through the upper cover and the filter screen and is positioned between the filter screen and the right side wall of the soft bag, the bottom of the soft bag is also provided with a liquid inlet pipe I, a liquid inlet pipe II and a liquid outlet pipe, the liquid outlet pipe is connected with the lowest part of the soft bag, the upper ends of the liquid inlet pipe I and the liquid inlet pipe II respectively penetrate through the middle part of the soft bag and the lowest part of the filter screen and are positioned between the filter screen and the right side wall of the soft bag, the upper end of the liquid inlet pipe I is lower than the liquid inlet pipe II, the pipe wall parts of the upper ends of the liquid inlet pipe I and the liquid inlet pipe, the longitudinal distance between the liquid outlet holes is 1-2 cm.

In order to make the working effect of the blood storage device better, the upper cover is in a round and hard shell type design, the diameter of the upper cover is 10-25cm, and the height of the upper cover is 5-10 cm; the soft bag is in an inverted cone shape, the upper part of the soft bag is tightly combined with the upper cover through welding or adhesive bonding, and the inner diameter of the upper part of the soft bag is consistent with the outer diameter of the lower part of the upper cover.

In order to make the added liquid better mixed with blood and bubble generation, the end of the liquid adding pipe is 1-3cm away from the lowest part of the filter screen.

An exhaust pipe is arranged at the joint of the soft bag and the upper cover, a three-way valve is arranged at the right end of the exhaust pipe, and a standby interface is further arranged on the upper cover. The upper side part of the three-way valve can be connected with an exhaust pipe to an upper cover standby interface, and the three-way valve is opened to exhaust quickly during pre-charging or when a large amount of bubbles exist and is closed after exhausting; opening the top passage of the three-way valve, wherein the top passage is provided with an automatic exhaust cap, the top of the exhaust cap is provided with a layer of membrane which allows gas to pass through liquid but not liquid, and a small amount of bubbles can be automatically discharged through the membrane during flow conversion.

In order to conveniently and quickly connect various external devices, a pipe clamp IV, a pipe clamp V and a pipe clamp III are respectively arranged on the liquid inlet pipe I, the liquid inlet pipe II and the liquid outlet pipe; and the tail end of the connector is respectively provided with a first connector, a second connector and a third connector.

In order to make the filtering effect better, the aperture of the filtering net is 120-200 microns.

In order to ensure that the VAVD interface is safer to use, the tail end of the VAVD interface is provided with a water blocking filter.

The utility model discloses following beneficial effect has:

1. the soft bag part of the blood storage device is in a flat state after exhausting gas, and a gas-free closed system is formed in the bag, so that the contact area between blood and air in the bag is reduced.

2. When the venous drainage is insufficient under the action of gravity and siphon, a VAVD interface on the hard shell cover can be connected with a specific negative pressure device to generate certain negative pressure to assist the venous drainage.

3. The liquid feeding pipe, the liquid inlet pipe I and the liquid inlet pipe II extend into the partial pipe bodies in the bag to play a supporting role simultaneously, and the front wall and the rear wall of the bag body are prevented from being adhered together to influence blood flow.

4. When the liquid amount is not enough, liquid can be quickly added through the liquid adding port, and bubbles can be avoided in the liquid adding process.

5. The utility model discloses a filter screen and the right flank of soft bag form a space inclosed relatively, and the liquid that liquid feeding pipe, feed liquor pipe one and feed liquor pipe two got into when flowing to soft bag bottom must flow to the space between filter screen and the soft bag left side wall through the filter screen in, then flow downwards, have ensured filterable effect.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view schematic of the structure of fig. 1.

In the figure: the puncture outfit comprises a puncture outfit 1, a trapezoid joint 2, a pipe clamp II 3, a pipe clamp I4, a three-way joint 5, a liquid feeding pipe 6, a standby interface 7, a VAVD interface 8, a water blocking filter 9, a scale mark 10, a positive and negative pressure safety regulating valve 11, an exhaust pipe 12, a three-way valve 13, a filter screen 14, a liquid inlet pipe I15, a liquid inlet pipe II 16, a pipe clamp V17, a joint II 18, a pipe clamp IV 19, a joint I20, a pipe clamp III 21, a liquid outlet pipe 22, a joint III 23, an upper cover 25 and a soft bag 26.

Detailed Description

As shown in fig. 1 to 2, a blood storage device for extracorporeal circulation of cardiac surgery, which comprises an upper cover 25, a positive and negative pressure safety regulating valve 11 and a VAVD interface 8, wherein the positive and negative pressure safety regulating valve 11 and the VAVD interface 8 are mounted on the upper cover 25, a liquid feeding pipe 6 passes through the upper cover and is connected with a puncture outfit 1 and a trapezoidal joint 2 through a three-way joint 5, and the blood storage device is characterized in that: the lower part of the upper cover 25 is connected with a soft bag 26, a filter screen 14 is arranged in the soft bag 26, four sides of the filter screen 14 are hermetically welded with the inner wall of the right side of the soft bag 26 to form an independent space in the soft bag 26, the tail end of the liquid feeding pipe 6 penetrates through the upper cover 25 and the filter screen 14 and is positioned between the filter screen 14 and the right side wall of the soft bag 26, the bottom of the soft bag 26 is also provided with a liquid inlet pipe I15, a liquid inlet pipe II 16 and a liquid outlet pipe 22, the liquid outlet pipe 22 is connected with the lowest part of the soft bag 26, the upper ends of the liquid inlet pipe I15 and the liquid inlet pipe II 16 respectively penetrate through the middle part of the soft bag 26 and the lowest part of the filter screen 14 and are positioned between the filter screen 14 and the right side wall of the soft bag 26, the upper end of the liquid inlet pipe I15 is lower than the liquid inlet pipe II 16, and the pipe wall parts of the upper ends of the liquid, the diameter of the liquid outlet holes is 3-5mm, and the longitudinal spacing distance between the liquid outlet holes is 1-2 cm.

The upper cover 25 is in a round and monocoque design, and the diameter of the upper cover is 10-25cm, and the height of the upper cover is 5-10 cm; the soft bag 26 is in an inverted cone shape, the upper part of the soft bag is tightly combined with the upper cover 25 by welding or gluing, and the inner diameter of the upper part of the soft bag 26 is consistent with the outer diameter of the lower part of the upper cover 25.

The distance between the tail end of the liquid adding pipe 6 and the filter screen at the lowest part is 141-3 cm.

An exhaust pipe 12 is arranged at the joint of the soft bag 26 and the upper cover 25, and a three-way valve 13 is arranged at the right end of the exhaust pipe 12.

The first liquid inlet pipe 15, the second liquid inlet pipe 16 and the liquid outlet pipe 22 are respectively provided with a pipe clamp IV 19, a pipe clamp V17 and a pipe clamp III 21; and the tail ends of the two connectors are respectively provided with a first connector 20, a second connector 18 and a third connector 23.

The upper cover 25 is also provided with a standby interface 7.

The aperture of the filter 14 is 120-200 microns.

And a water blocking filter 9 is arranged at the tail end of the VAVD interface 8.

The puncture outfit 1 and the trapezoidal joint 2 are respectively provided with a first pipe clamp 4 and a second pipe clamp 3.

The utility model discloses store the blood device for a part in the heart operation extracorporeal circulation system, it constitutes unified airtight circulation system through parts such as extracorporal circulation pipeline and blood pump, oxygenator, artery thrombus filter when using.

The upper part of the device is designed in a round and hard shell closed type, and the lower part of the device is a soft bag. The inner diameter of the upper part of the soft bag is consistent with the outer diameter of the lower part of the hard shell. The filter screen 14 in the soft bag 26 divides the inner cavity of the soft bag into two parts, one part is a liquid inlet cavity, the other part is a liquid outlet cavity, all liquid entering the bag through the liquid adding pipe 6, the first liquid inlet pipe 15 and the second liquid inlet pipe 16 firstly enters the liquid inlet cavity, and only after being filtered by the filter screen 14, the liquid can enter the liquid outlet cavity and flow out from the liquid outlet pipe 22. The liquid outlet 22 is at the lowest end of the flexible bag to ensure the least amount of residue in the flexible bag 26.

The cover is provided with a VAVD interface 8 which can be connected with negative pressure for assisting vein drainage and can be externally connected with negative pressure for assisting vein drainage, and when the vein drainage is insufficient under the action of gravity and siphon, a certain negative pressure is generated by a specific negative pressure device for assisting vein drainage. One end of the VAVD interface 8 positioned in the upper cover is connected with a water filter 9, so that the VAVD interface is air-permeable and liquid-impermeable, and prevents liquid from entering the gas path to cause pollution; at the same time, a positive and negative pressure safety regulating valve 11 is arranged, and the valve can be automatically opened when the pressure in the blood storage device is more than 2mmHg or less than-60 mmHg.

A liquid feeding pipe 6 is covered on the cover, and the part of the liquid feeding pipe 6 in the pipe extends to about 2/3 parts of the soft bag 26 and is 1-3cm away from the lowest part of the filter screen 14; the liquid feeding pipe 6 is connected with the puncture outfit 1 and the trapezoidal joint 2 through the three-way joint 5 and can be externally connected with a liquid soft bag, the pipe clamp I4 and the pipe clamp II 3 are in a clamping state when in standby, if the liquid amount in the blood storage device is not enough, the liquid can be quickly supplemented through the pipe clamp I4 and the pipe clamp II 3, and the circulation flow is ensured.

The exhaust pipe 12 is arranged at the joint of the soft bag 26 and the upper cover 25, and the tail end is connected with a three-way valve 13; the upper side part of the three-way valve 13 can be connected with an exhaust pipe to the spare connector 7 of the upper cover, and the valve is opened to exhaust quickly during pre-charging or when a large amount of bubbles exist and is closed after exhausting; the top passage is opened, the top is provided with an automatic exhaust cap, the top of the exhaust cap is provided with a layer of membrane which allows gas to pass through liquid but not liquid, and a small amount of bubbles can be automatically exhausted through the membrane during the diversion.

The bag body is provided with a capacity scale mark 10, the maximum liquid storage capacity is 1500mL, a filter screen 14 is arranged in the bag body, and the aperture of the filter screen is 120-200 microns; one side of the right side of the filter screen 14 is provided with a liquid inlet pipe I15, a liquid inlet pipe II 16 and a liquid feeding pipe 6. The liquid inlet pipe I15 and the liquid inlet pipe II 16 extend into 1/3 parts of the bag with the length occupying the height of the filter screen, and extend into side holes with the diameter of 3-5mm on the side wall of the branch pipe inside the bag at 90-degree staggered intervals of 1-2 cm; the upper end 15 of the first liquid inlet pipe 15 is lower than the second liquid inlet pipe 16.

The soft bag 26 of the blood storage device is in a flat suction state after exhausting gas, and a gas-free closed system is formed in the bag. After the structure of the soft bag is set, the speed of exhausting gas is faster. The liquid inlet pipe I15, the liquid inlet pipe II 16 and the liquid feeding pipe 6 extend into the partial pipe bodies in the bag and play a supporting role at the same time, so that the front wall and the rear wall of the bag are prevented from being adhered together to influence blood flow.

When in use, the device is vertically fixed on an artificial heart-lung machine by using a special bracket, so that the smoothness of each pipeline is ensured, and the phenomenon of folding is avoided. The second liquid inlet pipe 16 is a main liquid inlet and is connected with the pipeline to drain venous blood of the human body through a second connector 18; the liquid outlet pipe 22 is connected with the blood pump and the oxygenator through a joint III 23; the first liquid inlet pipe 15 is a secondary liquid inlet and is connected with a pipeline to the autologous blood and intraoperative surgical field blood suction recovery device through a first connector 20. The liquid feeding pipe 6 is connected with the puncture outfit 1 and the trapezoidal joint 2 through the three-way joint 5, can be externally connected with a liquid soft bag and can be used for quickly filling liquid. The inlet and the outlet are respectively controlled by a first pipe clamp 4, a second pipe clamp 3, a third pipe clamp 21, a fourth pipe clamp 19 and a fifth pipe clamp 17, and the inlet and the outlet of the liquid are controlled by opening or closing the pipe clamps as required at any time.

Claims

1. The utility model provides a heart operation extracorporal circulatory system is with storing blood device which constitutes and includes upper cover (25) and install positive negative pressure safety control valve (11) and VAVD interface (8) on upper cover (25), and filling tube (6) pass the upper cover and are connected with puncture ware (1) and trapezoidal joint (2) through three way connection (5), its characterized in that: the lower part of the upper cover (25) is connected with a soft bag (26), a filter screen (14) is arranged in the soft bag (26), four sides of the filter screen (14) and the inner wall of the right side of the soft bag (26) are hermetically welded to form an independent space in the soft bag (26), the tail end of the liquid adding pipe (6) penetrates through the highest points of the upper cover (25) and the filter screen (14) and is positioned between the filter screen (14) and the right side wall of the soft bag (26), a liquid inlet pipe I (15), a liquid inlet pipe II (16) and a liquid outlet pipe (22) are further arranged at the bottom of the soft bag (26), the liquid outlet pipe (22) is connected with the lowest part of the soft bag (26), the upper ends of the liquid inlet pipe I (15) and the liquid inlet pipe II (16) respectively penetrate through the middle part of the soft bag (26) and the lowest part of the filter screen (14) and is positioned between the filter screen (14) and the right side wall of the soft bag (26), and the upper end, liquid outlet holes are respectively and uniformly arranged on the pipe wall parts, located between the lowest part of the filter screen (14) and the upper cover (25), of the upper ends of the first liquid inlet pipe (15) and the second liquid inlet pipe (16) in a staggered mode at intervals, the diameters of the liquid outlet holes are 3-5mm, and the longitudinal spacing distance between the liquid outlet holes is 1-2 cm.

2. The blood reservoir device for extracorporeal circulation for cardiac surgery according to claim 1, wherein: the upper cover (25) is in a round and monocoque design, the diameter of the upper cover is 10-25cm, and the height of the upper cover is 5-10 cm; the soft bag (26) is in an inverted cone shape, the upper part of the soft bag is tightly combined with the upper cover (25) through welding or adhesive bonding, and the inner diameter of the upper part of the soft bag (26) is consistent with the outer diameter of the lower part of the upper cover (25).

3. The blood reservoir device for extracorporeal circulation for cardiac surgery according to claim 1, wherein: the distance between the tail end of the liquid adding pipe (6) and the lowest part of the filter screen (14) is 1-3 cm.

4. The blood reservoir device for extracorporeal circulation for cardiac surgery according to claim 1, wherein: an exhaust pipe (12) is arranged at the joint of the soft bag (26) and the upper cover (25), and a three-way valve (13) is arranged at the right end of the exhaust pipe (12).

5. The blood reservoir device for extracorporeal circulation for cardiac surgery according to claim 1, wherein: the first liquid inlet pipe (15), the second liquid inlet pipe (16) and the liquid outlet pipe (22) are respectively provided with a fourth pipe clamp (19), a fifth pipe clamp (17) and a third pipe clamp (21); and the tail ends of the two connectors are respectively provided with a first connector (20), a second connector (18) and a third connector (23).

6. The blood reservoir device for extracorporeal circulation for cardiac surgery according to claim 1, wherein: the upper cover (25) is also provided with a standby interface (7).

7. The blood reservoir device for extracorporeal circulation for cardiac surgery according to claim 1, wherein: the aperture of the filter screen (14) is 120-200 microns.

8. The blood reservoir device for extracorporeal circulation for cardiac surgery according to claim 1, wherein: and a water blocking filter (9) is arranged at the tail end of the VAVD interface (8).