Continuous blood purification autologous circulation control device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a continuous blood purification autologous circulation control device which comprises a connecting part and a control part. The control part comprises a pressure measuring device and a controller which are connected through a wire; the connecting part comprises a hose, a first connecting port, a measuring port and a second connecting port; the first connecting port and the second connecting port are located at the two ends of the hose respectively. The measuring port is connected in series in the hose; the pressure measuring device is detachably connected with the measuring port; the control part is arranged outside the hose in a sleeving manner; a limiter is arranged in the controller; and the limiter can selectively clamp the hose.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a continuous blood purification autologous circulation control device. Background Technology

[0002] Continuous blood purification is a novel blood purification method. It involves continuous blood purification therapy for 24 hours or nearly 24 hours daily, replacing the purification methods used by impaired kidney function. It is one of the most commonly used blood purification techniques in critical care. Mimicking the glomerular filtration principle, it removes solutes through two methods: convection and diffusion. Arterial or venous blood is introduced into a semi-permeable membrane filter with good permeability. Water and dissolved low- to medium-molecular-weight solutes in the plasma are removed through convection, i.e., by relying on the pressure gradient across the semi-permeable membrane. Substances smaller than the membrane pores are filtered out, while simultaneously, substances needed by the body are introduced into the body as replacement fluid to maintain homeostasis.

[0003] During continuous blood purification therapy, the proper functioning of the machine is crucial for the smooth progress of the treatment, and the machine's monitoring system ensures patient safety throughout the process. When abnormal conditions occur during treatment, the machine will alert medical staff via alarm. However, frequent alarms can interrupt the treatment, cause the blood pump to stop operating, leave blood outside the patient's body, increase the risk of coagulation events, and in severe cases, even threaten the patient's life.

[0004] The main causes of alarms in continuous blood purification include pressure alarms, balance alarms, air bubble alarms, and blood leakage alarms, with pressure alarms accounting for the highest proportion. The primary cause of pressure alarms is insufficient blood flow; therefore, preventing continuous blood purification alarms, especially those related to poor blood flow at the blood collection point, is particularly important.

[0005] This invention addresses the aforementioned problems by providing a continuous blood purification autologous circulation control device. Utility Model Content

[0006] In order to overcome the problems mentioned in the background art, the present invention provides a continuous blood purification autologous circulation control device.

[0007] A continuous blood purification autologous circulation control device includes a connecting part and a control part; the control part includes a pressure sensor and a controller connected by wires; the connecting part includes a hose, a first connecting port, a measuring port, and a second connecting port; the first connecting port and the second connecting port are respectively located at both ends of the hose; the measuring port is connected in series inside the hose; the pressure sensor and the measuring port are detachably connected; the control part is sleeved on the outside of the hose; the controller has a limiter inside; the limiter can selectively clamp the hose.

[0008] Furthermore, the controller includes a housing and a limiting member; the housing and the limiting member are detachably connected; the housing has a first mounting groove on the side facing the limiting member; the limiting member has a second mounting groove on the side facing the housing; when the limiting member is installed on the housing, the first mounting groove and the second mounting groove are joined together to form a channel.

[0009] Furthermore, the limiter is located inside the housing.

[0010] Furthermore, the hose passes through the controller via a channel.

[0011] Furthermore, the controller also includes a display and buttons; both the display and buttons are disposed on the side wall of the housing.

[0012] Furthermore, the button includes one or more of the following: power button, reset button, and control button.

[0013] Furthermore, the controller also includes an alarm; the alarm is disposed on the side wall of the housing.

[0014] Furthermore, the housing is provided with a pressure testing interface; the pressure tester is provided with a wire; the end of the wire away from the pressure tester is provided with a pressure testing connector; the pressure testing connector is detachably connected to the pressure testing interface.

[0015] Furthermore, a power interface is provided on the housing.

[0016] Furthermore, the first connection port, the measurement port, and the second connection port are all three-way valves.

[0017] The beneficial effects of this utility model are:

[0018] 1. During use, connect the first connection port to the blood inlet end of the blood filtration tube and the blood inlet end of the blood filtration machine, and connect the second connection port to the blood return end of the blood filtration tube and the blood return end of the blood filtration machine. At this time, the measuring port is located between the first connection port and the control unit. Connect the pressure sensor to the measuring port, and the blood flow information can be obtained by measuring the blood pressure at the blood inlet end. When the blood flow is sufficient, the limiter clamps the tubing. When the pressure sensor detects that the blood flow is insufficient, the limiter releases the tubing, allowing the filtered blood to flow back through the tubing to the blood inlet end of the blood filtration machine and into the interior of the blood filtration machine. This prevents the blood filtration machine from stopping, maintains the continuity of treatment, avoids interruption of the treatment process, reduces the risk of extracorporeal coagulation, improves treatment efficiency, and relatively reduces the workload of nursing care.

[0019] 2. When the pressure sensor detects insufficient blood flow, the control unit issues an alarm to alert medical staff to handle the situation. Attached Figure Description

[0020] Figure 1 A perspective view of a continuous blood purification autologous circulation control device that implements this utility model;

[0021] Figure 2 A front view of a continuous blood purification autologous circulation control device that implements this utility model;

[0022] Figure 3 A front view of a controller that implements this utility model;

[0023] Figure 4 for Figure 3 Sectional view along axis AA;

[0024] Figure 5 A rear view of a controller that implements this utility model;

[0025] Figure 6 A perspective view of another continuous blood purification autologous circulation control device that realizes this utility model;

[0026] In the diagram, 1 is the connecting part; 2 is the control part; 11 is the first connecting port; 12 is the measuring port; 13 is the second connecting port; 14 is the first auxiliary port; 15 is the second auxiliary port; 21 is the pressure sensor; 22 is the controller; 23 is the limiter; 24 is the power interface; 221 is the display; 222 is the alarm; 223 is the pressure measuring interface; 224 is the reset button; 225 is the mute button; 226 is the control button; 227 is the housing; 228 is the limit component; 229 is the power button; 231 is the pressure block; 232 is the push rod; and 233 is the motor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The present utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] This invention provides an autologous circulation device connected to the blood extraction end to prevent blood extraction alarms. When the blood extraction pressure at the blood extraction end reaches a certain level during treatment, this autologous circulation device is automatically activated to alleviate insufficient blood extraction and reduce the occurrence of coagulation events.

[0031] Example 1

[0032] like Figure 1-5 The device disclosed is a continuous blood purification autologous circulation control device, comprising a disposable connecting part and a reusable control part; the control part includes a pressure sensor and a controller connected by wires; the connecting part includes a hose, a first connecting port, a measuring port, and a second connecting port; the first connecting port and the second connecting port are located at opposite ends of the hose; the measuring port is connected in series inside the hose; the pressure sensor and the measuring port are detachably connected; the control part is sleeved on the outside of the hose; the controller has a limiter inside; the limiter can selectively clamp the hose.

[0033] Specifically, the first connection port, the measuring port, and the second connection port are all three-way valves. One end of the first and second connection ports is connected to a hose. The two ports of the measuring port are connected to the hose, and the third port is detachably connected to the pressure gauge.

[0034] In use, first pre-flushing the connecting part with normal saline, then connecting the first connecting port to the blood inlet end of the blood filtration tubing and the blood inlet end of the blood filtration machine, and connecting the second connecting port to the blood return end of the blood filtration tubing and the blood return end of the blood filtration machine. Next, sleeve the control unit over the tubing, ensuring the control unit is positioned between the measuring port and the second connecting port. At this point, the measuring port is located between the first connecting port and the control unit. Connecting the pressure gauge to the measuring port allows for the acquisition of blood flow information by measuring the blood pressure at the blood inlet end.

[0035] When blood flow is sufficient, the restrictor clamps the tubing; when the pressure gauge detects insufficient blood flow, the restrictor releases the tubing, allowing the filtered blood to flow back through the tubing to the blood inlet of the blood filtration machine and into the machine's interior. This prevents the blood filtration machine from stopping, maintains the continuity of treatment, avoids interruptions in the treatment process, reduces the risk of extracorporeal coagulation, improves treatment efficiency, and relatively reduces nursing workload.

[0036] In some embodiments of this application, the controller includes a housing and a limiting member; the housing and the limiting member are detachably connected; a first mounting groove is provided on the side of the housing facing the limiting member; a second mounting groove is provided on the side of the limiting member facing the housing; when the limiting member is installed on the housing, the first mounting groove and the second mounting groove are joined together to form a channel.

[0037] The limiter is located inside the housing. In use, the hose is passed through the channel to the controller, at which point the limiter is positioned directly over the hose.

[0038] In the illustrative embodiment of this application, the limiter includes a pressure block, a push rod, and a motor. The motor drives the push rod to move the pressure block. The direction of movement of the push rod is perpendicular to the axis of the channel to ensure that the pressure block can completely clamp the hose under the drive of the motor.

[0039] Specifically, the push rod is a screw; the pressure block is rotatably connected to the push rod, and the motor rotation drives the push rod to move along its own axis.

[0040] In some examples of this application, the controller also includes an alarm; the alarm is mounted on the side wall of the housing. When the pressure sensor detects insufficient blood flow, the control unit triggers the alarm to sound, alerting medical personnel to provide assistance.

[0041] Specifically, the alarm will sound an alarm through sound, lights being turned off, or other means.

[0042] Furthermore, the controller also includes a display and buttons; both the display and buttons are located on the side wall of the housing. The controller's attitude can be adjusted via the buttons.

[0043] Specifically, the buttons include one or more of the following: power button, mute button, reset button, and control button. The power button turns the controller on or off. The mute button silences the alarm. The reset button resets the limiter. The control buttons adjust the alarm threshold.

[0044] In a specific example of this application, the housing is provided with a pressure measuring interface; the pressure measuring device is provided with a wire; the end of the wire away from the pressure measuring device is provided with a pressure measuring connector; the pressure measuring connector and the pressure measuring interface are detachably connected.

[0045] Furthermore, a power interface is provided on the housing. During use, the power cord is plugged into the power interface to provide power to the controller and voltage sensor.

[0046] Example 2

[0047] like Figure 6 As shown, the difference between this embodiment and Embodiment 1 is that:

[0048] A first auxiliary port and a second auxiliary port are provided between the first connection port and the measurement port. The first auxiliary port and the second auxiliary port are located on both sides of the controller.

[0049] An implantation port is designed on the controller, through which injection devices such as peristaltic pumps are connected to the controller.

[0050] When in use, the first auxiliary port and the second auxiliary port are connected to the peristaltic pump and other injection devices. When the patient returns to blood flow, anticoagulant, saline and other liquids are injected into the tube through the first auxiliary port and the second auxiliary port to flush and seal the tube to prevent blood from remaining inside the tube. Then, the tube is clamped with a limiter to continue purifying the blood.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The embodiments described in this application are merely some, not all, embodiments of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Without conflict, the following embodiments and features in the embodiments can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

Claims

1. A continuous blood purification autologous circulation control device, comprising a connecting part and a control part, characterized in that, The control unit includes a pressure sensor and a controller connected by wires; the connection unit includes a hose, a first connection port, a measuring port, and a second connection port; the first connection port and the second connection port are located at opposite ends of the hose; the measuring port is connected in series inside the hose; the pressure sensor and the measuring port are detachably connected; the control unit is sleeved on the outside of the hose; the controller has a limiter inside; the limiter can selectively clamp the hose.

2. The continuous blood purification autologous circulation control device according to claim 1, characterized in that, The controller includes a housing and a limiting member; the housing and the limiting member are detachably connected; the housing has a first mounting groove on the side facing the limiting member; the limiting member has a second mounting groove on the side facing the housing; when the limiting member is installed on the housing, the first mounting groove and the second mounting groove are joined together to form a channel.

3. The continuous blood purification autologous circulation control device according to claim 2, characterized in that, The limiter is located inside the housing.

4. The continuous blood purification autologous circulation control device according to claim 2, characterized in that, The hose passes through the controller via a channel.

5. The continuous blood purification autologous circulation control device according to claim 2, characterized in that, The controller also includes a display and buttons; both the display and buttons are located on the side wall of the housing.

6. The continuous blood purification autologous circulation control device according to claim 5, characterized in that, The buttons include one or more of the following: power button, reset button, and control button.

7. The continuous blood purification autologous circulation control device according to claim 2, characterized in that, The controller also includes an alarm; the alarm is mounted on the side wall of the housing.

8. The continuous blood purification autologous circulation control device according to claim 2, characterized in that, The housing is provided with a pressure measuring interface; the pressure measuring device is provided with a wire; the end of the wire away from the pressure measuring device is provided with a pressure measuring connector; the pressure measuring connector is detachably connected to the pressure measuring interface.

9. A continuous blood purification autologous circulation control device according to claim 2, characterized in that, The housing is equipped with a power interface.

10. A continuous blood purification autologous circulation control device according to claim 2, characterized in that, The first connection port, the measurement port, and the second connection port are all three-way valves.

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