CN117582577B - Improved limb perfusion device - Google Patents
Improved limb perfusion device Download PDFInfo
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- CN117582577B CN117582577B CN202410077892.9A CN202410077892A CN117582577B CN 117582577 B CN117582577 B CN 117582577B CN 202410077892 A CN202410077892 A CN 202410077892A CN 117582577 B CN117582577 B CN 117582577B
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- tube
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- 230000010412 perfusion Effects 0.000 title claims abstract description 79
- 239000007788 liquid Substances 0.000 claims abstract description 80
- 230000000903 blocking effect Effects 0.000 claims abstract description 62
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 39
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 19
- 210000005077 saccule Anatomy 0.000 claims abstract description 12
- 230000036772 blood pressure Effects 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000008280 blood Substances 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000001802 infusion Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000017074 necrotic cell death Effects 0.000 description 2
- 206010061225 Limb injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 206010028320 muscle necrosis Diseases 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3621—Extra-corporeal blood circuits
- A61M1/3643—Priming, rinsing before or after use
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M31/00—Devices for introducing or retaining media, e.g. remedies, in cavities of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cardiology (AREA)
- External Artificial Organs (AREA)
Abstract
The invention belongs to the technical field of limb perfusion, and relates to an improved limb perfusion device. The invention comprises a perfusion box, wherein a peristaltic pump, a control valve, a pressure sensor, a flow sensor, a temperature sensor, a power supply and a controller are arranged in the perfusion box; the outer surface of the pouring box is provided with a display. The liquid outlet of the peristaltic pump is provided with a filling pipe through a control valve. The peristaltic pump infuses the perfusate in the liquid storage cavity into the blood vessel of the limb of the patient through the perfusate tube, and the controller adjusts the control valve according to the data received by the pressure sensor and the flow sensor. One end of the perfusion tube is communicated with a hard tube, and a blocking saccule is sleeved on the hard tube. The device has the characteristics of simple structure, convenient operation, safety, reliability, easy maintenance and the like. In the device, when the blocking saccule is fixed in a blood vessel of a patient, the blocking saccule can be effectively prevented from expanding along the length direction of the blood vessel, the blocking saccule is gathered towards the middle, and the tightness of the blocking saccule and the inner wall of the blood vessel is ensured.
Description
Technical Field
The invention belongs to the technical field of limb perfusion, and relates to an improved limb perfusion device.
Background
Ischemia after injury of the limb is a serious condition, and can lead to muscle necrosis, tissue necrosis, and even life threatening. Perfusion treatment after limb injury is mainly to restore blood supply to the limb as soon as possible to prevent further injury and necrosis, to save limbs and lives.
In perfusion, it is necessary to fix the perfusion tube to the inner wall of the vessel by means of a blocking balloon. However, when the blocking balloon is extruded by the inner wall of the blood vessel in the expanding process, the blocking balloon is easy to deform along the length direction of the blood vessel, so that poor adhesion, poor tightness and easy loosening between the blocking balloon and the inner wall of the blood vessel are caused, and further the subsequent perfusion is influenced.
In order to solve the problems, the invention provides an improved limb perfusion device.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides an improved limb perfusion device.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an improved limb perfusion device comprises a perfusion box, wherein a liquid storage cavity for containing perfusion liquid is arranged in the perfusion box; a peristaltic pump, a control valve, a pressure sensor, a flow sensor, a temperature sensor, a power supply and a controller are arranged in the perfusion box; the outer surface of the pouring box is provided with a display; the power supply, the peristaltic pump, the control valve, the pressure sensor, the flow sensor, the temperature sensor and the display are all electrically connected with the controller; the pressure sensor, the flow sensor and the temperature sensor are all installed in a matched manner with the perfusion tube;
a liquid outlet of the peristaltic pump is provided with a perfusion tube through a control valve; the peristaltic pump infuses the perfusate in the liquid storage cavity into the blood vessel of the limb of the patient through the perfusate tube, and the controller adjusts the control valve according to the data received by the pressure sensor and the flow sensor;
one end of the perfusion tube is communicated with a hard tube, and a blocking balloon is sleeved on the hard tube; the two ends of the hard tube are connected with connecting rings in a threaded manner, and the blocking saccule is fixedly connected between the two connecting rings; be provided with the pivoted actuating assembly of drive go-between on the hard tube, under actuating assembly's effect, the go-between rotates, and the rotation direction of two go-between is opposite, blocks the tip of sacculus and twists reverse and become tight, prevents to block sacculus axial expansion, and two go-between are close to each other simultaneously, block the sacculus and draw close to the centre, increase and block the laminating degree of sacculus and vascular inner wall.
Further, the blocking balloon comprises a first balloon segment, a second balloon segment and a limiting plate; the two first balloon sections are respectively arranged at two ends of the second balloon section, one end of the first balloon section is fixedly connected with the second balloon section, and the other end of the first balloon section is fixedly connected with the connecting ring; the limiting plates are uniformly distributed along the outer circumference of the hard pipe; a plurality of limit grooves are formed in the outer circumference of the hard pipe along the axial direction, the limit grooves correspond to the limit plates one by one, and the limit plates are arranged in the corresponding limit grooves in a sliding manner; one side of the limiting plate, which is far away from the hard tube, is fixedly connected with the inner wall of the second saccule section.
Further, the driving assembly comprises an impeller, a bevel gear ring and a fixed rod; the inner wall of the hard tube is provided with a first liquid channel and a second liquid channel, one end of the second liquid channel is communicated with the liquid injection tube, and the other end of the second liquid channel is communicated with the first liquid channel; one end of the first liquid channel, which is far away from the second liquid channel, is communicated with the blocking balloon; a rotating shaft is rotatably arranged in the first liquid channel, and an impeller is fixedly arranged on the rotating shaft; one end of the rotating shaft extends into the blocking saccule and is coaxially and fixedly connected with a bevel gear; the bevel gear ring is provided with two bevel gear rings which are respectively arranged on two sides of the bevel gear and are engaged with the bevel gear, a plurality of fixing rods are fixed on the end face of each bevel gear ring, and the connecting rings are in sliding connection with the fixing rods on the same side.
Further, the system also comprises a monitoring system for detecting physiological parameters of the patient, wherein the monitoring system comprises a blood pressure detector, a heart rate monitor and an oximeter.
Further, still include the alarm, the alarm is connected with the controller electricity, and when the detected value of blood pressure detector, heart rate monitor, oximeter appears unusual, can automatic triggering alarm, reminds medical personnel to handle in time.
Further, a temperature control system for adjusting the temperature of the perfusion fluid is arranged in the perfusion box; the temperature control system is electrically connected with the controller, and the controller controls the temperature control system according to the measured value of the temperature sensor so as to regulate the temperature of the perfusate.
Compared with the prior art, the invention has the following beneficial effects:
in the device, when the blocking sacculus is fixed in a blood vessel of a patient, the blocking sacculus can be effectively prevented from expanding along the length direction, and the blocking sacculus is integrally gathered towards the middle, so that the blocking sacculus is tightly attached to the inner wall of the blood vessel, the connection between the blocking sacculus and the blood vessel is more stable, and the blocking sacculus is prevented from loosening. The second balloon segment can ensure the tightness of the blocking balloon and the inner wall of the blood vessel.
The device can automatically adjust the pouring speed and the pouring pressure through the cooperation of the control valve, the pressure sensor and the flow sensor.
The device adopts automatic control mode, can alleviate medical personnel's work burden, improves work efficiency. The alarm can remind medical staff to timely handle when abnormal conditions occur to patients.
The monitoring system can monitor physiological parameters of patients in time, and is convenient for medical staff to know the conditions of the patients in time.
The device has the characteristics of simple structure, convenient operation, safety, reliability, easy maintenance and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a control schematic of the controller of the present invention
FIG. 3 is a schematic view of the structure of the perfusion tube according to the present invention;
FIG. 4 is a schematic view of the internal structure of a hard tube according to the present invention;
FIG. 5 is a schematic view of the structure of the first liquid channel in the present invention;
fig. 6 is a cross-sectional view of a second balloon segment of the present invention.
In the figure: 1. a pouring box; 2. a perfusion tube; 3. a hard tube; 4. a first liquid channel; 5. a second liquid channel; 6. a liquid injection pipe; 7. a rotating shaft; 8. an impeller; 9. bevel gears; 10. conical toothed ring; 11. a fixed rod; 12. a connecting ring; 13. a thread groove; 14. blocking balloon, 1401, first balloon segment, 1402 second balloon segment; 1403. a limiting plate; 15. a blood pressure detector; 16. an oximeter; 17. a heart rate monitor; 18. a flow sensor; 19. a temperature sensor; 20. a pressure sensor; 21. a peristaltic pump; 22. a control valve; 23. a display; 24. an alarm.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, the technical scheme adopted by the invention is as follows: an improved limb perfusion device comprises a perfusion box 1, wherein a liquid storage cavity is arranged in the perfusion box 1 and used for containing perfusion liquid. A temperature control system for adjusting the temperature of the perfusate is arranged in the perfusate box 1. A peristaltic pump 21, a control valve 22, a monitoring system for detecting physiological parameters of the patient, an alarm 24, a pressure sensor 20, a flow sensor 18, a temperature sensor 19, a power supply and a controller are arranged in the perfusion chamber 1. The perfusion chamber 1 is provided with a display 23. Peristaltic pump 21, control valve 22, monitoring system, alarm 24, pressure sensor 20, flow sensor 18, temperature sensor 19, power supply, and display 23 are all electrically connected to the controller.
The peristaltic pump 21 is fitted with a perfusion tube 2 at its outlet via a control valve 22, the other end of the perfusion tube 2 being secured to the patient's blood vessel via a blocking balloon 14. The liquid inlet of the peristaltic pump 21 is communicated with the liquid storage cavity, and the peristaltic pump 21 is used for pouring the perfusion liquid in the liquid storage cavity into the blood vessel of the limb of the patient through the perfusion tube 2. Perfusate flows out after circulation in the blood vessels of the patient's limb.
The control valve 22 is used to regulate the perfusion rate and perfusion pressure to ensure safety and comfort of the perfusion process. The control valve 22 may be automatically adjusted based on the patient's physiological parameters as monitored by the monitoring system, or may be manually adjusted by the healthcare worker.
The pressure sensor 20, the flow sensor 18 and the temperature sensor 19 are all matched with the perfusion tube 2. The pressure sensor 20 is used to monitor the pressure of the perfusion fluid in the perfusion tube 2. The temperature sensor 19 is used to monitor the temperature of the perfusate in the perfusion tube 2. The flow sensor 18 is used to monitor the flow of perfusion fluid within the perfusion tube 2. The pressure sensor 20, the flow sensor 18 and the temperature sensor 19 transmit detected values to the controller, and the controller automatically adjusts the pouring speed and the pressure by adjusting the control valve 22, so that the safety of the pouring process is ensured.
The monitoring system comprises a blood pressure detector 15, a heart rate monitor 17 and an oximeter 16. The monitoring system communicates the sensed data to a controller that automatically adjusts the control valve 22 based on the patient's physiological parameters.
The temperature control system is used for adjusting the temperature of the perfusate in the liquid storage cavity so as to maintain the perfusate entering the limb of the patient within a proper temperature range.
When abnormal conditions of blood pressure, blood sample saturation and heart rate of the patient occur, the alarm 24 can be automatically triggered to remind medical staff of timely treatment, and safety of the patient is ensured.
The display 23 is used for displaying physiological parameters and perfusion status of the patient, i.e. pressure, flow, temperature, etc. during the perfusion process, so that the medical staff can know the condition and the perfusion situation of the patient at any time. And the allowable range values of the blood pressure, heart rate, blood oxygen saturation of the patient can be set through the display 23. When the patient's blood pressure, heart rate, and blood oxygen saturation are not within the allowable range values, the alarm 24 will alert the healthcare worker to perform timely treatment.
One end of the pouring tube 2 is communicated with a hard tube 3, and the pouring tube 2 is fixedly connected with the hard tube 3 in a coaxial way. The thread groove 13 has all been seted up at the both ends of hard tube 3, and the both ends of hard tube 3 all threaded connection has go-between 12, blocks sacculus 14 cover and establishes on hard tube 3 and blocks sacculus 14 fixed connection between two go-between 12. The connecting ring 12, the blocking balloon 14 and the hard tube 3 enclose a sealed space. The blocking balloon 14 includes a first balloon segment 1401, a second balloon segment 1402, and a stop plate 1403. The first balloon section 1401 has two, and two first balloon sections 1401 are established at the both ends of second balloon section 1402 separately, and the one end and the second balloon section 1402 fixed connection of first balloon section 1401, the other end and the go-between 12 fixed connection of first balloon section 1401. The plurality of the stopper plates 1403 is provided, and the plurality of stopper plates 1403 are uniformly distributed along the outer circumference of the hard tube 3. A plurality of limit grooves are formed in the outer circumference of the hard tube 3 along the axial direction, and the limit grooves are in one-to-one correspondence with the limit plates 1403. The limit plate 1403 is slidably disposed in the corresponding limit groove. One side of the limiting plate 1403 away from the hard tube 3 is fixedly connected with the inner wall of the second balloon segment 1402.
The blocking balloon 14 is gradually inflated by injecting a liquid into the blocking balloon 14. Simultaneously, the connecting rings 12 are rotated, the rotation directions of the two connecting rings 12 are opposite, and the connecting rings 12 drive the corresponding first balloon sections 1401 to rotate, so that the first balloon sections 1401 are gradually twisted, the first balloon sections 1401 are further lengthened and become tensed in the length direction, and the resistance to deformation of the first balloon sections 1401 in the length direction of the blood vessel is increased. And simultaneously, the two connecting rings 12 are close to each other, so that the first balloon segment 1401 moves towards the middle, the blocking balloon 14 is gathered towards the middle as a whole, the inner blocking balloon 14 is expanded along the radial direction of the blood vessel along with the continuous entering of liquid, and the extrusion force of the blocking balloon 14 to the blood vessel is increased. The blocking balloon 14 is tightly attached to the blood vessel, so that the connection between the blocking balloon 14 and the inner wall of the blood vessel is more stable, and the blocking balloon 14 is prevented from loosening. When the second balloon segment 1402 is gradually expanded, the limiting plate 1403 slides outwards along the corresponding limiting groove, so that the second balloon segment 1402 is further prevented from expanding along the length direction of the blood vessel, the fitting degree of the second balloon segment 1402 and the inner wall of the blood vessel is improved, and the sealing degree of the second balloon segment 1402 and the blood vessel is further improved.
The hard tube 3 is provided with a driving component for driving the connecting ring 12 to rotate. The drive assembly comprises an impeller 8, a bevel ring 10 and a fixed rod 11. The inner wall of the hard tube 3 is provided with a first liquid channel 4 and a second liquid channel 5, one end of the second liquid channel 5 is communicated with a liquid injection tube 6, and the other end of the second liquid channel 5 is communicated with the first liquid channel 4. The end of the first liquid channel 4 remote from the second liquid channel 5 communicates with the blocking balloon 14. The liquid injection pipe 6 is communicated with a liquid injection pump, and the liquid injection pump conveys liquid into the movable blocking balloon 14 through the liquid injection pipe 6, the second liquid channel 5 and the first liquid channel 4, so that the blocking balloon 14 is gradually inflated.
The first liquid channel 4 is rotatably provided with a rotating shaft 7, and the rotating shaft 7 is fixedly provided with an impeller 8. One end of the rotating shaft 7 extends into the blocking saccule 14 and is coaxially and fixedly connected with a bevel gear 9. The bevel gear rings 10 are provided with two bevel gear rings 10 which are all sleeved on the hard pipe 3 in a rotating mode, the two bevel gear rings 10 are respectively arranged on two sides of the bevel gear 9 and are all meshed with the bevel gear 9, a plurality of fixing rods 11 are fixed on the end face of each bevel gear ring 10, and the fixing rods 11 are uniformly distributed along the circumference of the axis of the hard pipe 3. The connecting ring 12 is slidingly connected with the fixing rod 11 on the same side. Specifically, a sliding hole in sealing sliding fit with the fixed rod 11 is formed in the connecting ring 12, and the connecting ring 12 is in sealing sliding connection with the fixed rod 11 through the sliding hole. When the liquid flows through the first liquid channel 4, the impeller 8 is pushed to rotate, the rotating shaft 7 rotates, the bevel gear 9 drives the bevel gear ring 10 to enable the bevel gear ring 10 to rotate around the axis of the hard pipe 3, and the rotation directions of the two bevel gear rings 10 are opposite, so that the connecting ring 12 rotates around the axis of the hard pipe 3. Under the action of the screw grooves 13, the two connecting rings 12 are simultaneously brought close to each other.
Working principle: initially, the connecting ring 12 is at the end of the fixing rod 11, the first balloon segment 1401 is not twisted, and the blocking balloon 14 is entirely in a radially contracted state.
In use, the range of allowable blood pressure, heart rate, blood oxygen saturation values are set via the display 23. The blood pressure monitor 15, heart rate monitor 17, and oximeter 16 are attached to the patient. One end of the perfusion tube 2 is fixed to the inner wall of the patient's blood vessel by means of a blocking balloon 14. The peristaltic pump 21 is started, the peristaltic pump 21 conveys the perfusion liquid in the liquid storage cavity into the blood vessel of the limb of the patient through the perfusion tube 2, and the perfusion liquid flows out after circulating in the blood vessel of the limb of the patient. During the perfusion process, the temperature sensor 19 detects the temperature of the perfusion, the pressure sensor 20 detects the pressure of the perfusion, the flow sensor 18 detects the flow of the perfusion, and the blood pressure, heart rate, blood oxygen saturation, perfusion pressure, perfusion volume and temperature of the perfusate of the patient can be visually observed through the display 23.
The controller adjusts the control valve 22 according to the received blood pressure, heart rate, blood oxygen saturation, and perfusion pressure, temperature, and flow rate, ensuring the safety of the perfusion process. .
When one end of the perfusion tube 2 is fixed to the blood vessel by the blocking balloon 14, a liquid is injected into the blocking balloon 14 by an injection pump. The liquid enters the blocking balloon 14 through the liquid injection tube 6, the second liquid channel 5 and the first liquid channel 4, so that the blocking balloon 14 is gradually inflated. When the liquid flows through the first liquid channel 4, the liquid pushes the impeller 8 to rotate, the rotating shaft 7 rotates, the bevel gear 9 drives the bevel gear ring 10 to enable the bevel gear ring 10 to rotate around the axis of the hard pipe 3, and the rotation directions of the two bevel gear rings 10 are opposite. The conical tooth ring 10 drives the connecting rings 12 to rotate through the fixing rods 11, and the rotating directions of the two connecting rings 12 are opposite, the connecting rings 12 drive the corresponding first balloon sections 1401 to rotate, so that the end parts of the first balloon sections 1401 are gradually twisted, the first balloon sections 1401 are further lengthened in the length direction and become tight, and the resistance to deformation of the first balloon sections 1401 in the length direction of the blood vessel is increased. And simultaneously, the two connecting rings 12 are close to each other, so that the first balloon segment 1401 moves towards the middle, the blocking balloon 14 is gathered towards the middle as a whole, the inner blocking balloon 14 is expanded along the radial direction of the blood vessel along with the continuous entering of liquid, and the extrusion force of the blocking balloon 14 to the blood vessel is increased. The blocking balloon 14 is tightly attached to the blood vessel, so that the connection between the blocking balloon 14 and the inner wall of the blood vessel is more stable, and the blocking balloon 14 is prevented from loosening. When the second balloon segment 1402 is gradually expanded, the limiting plate 1403 slides outwards along the corresponding limiting groove, so that the second balloon segment 1402 is further prevented from expanding along the length direction of the blood vessel, the fitting degree of the second balloon segment 1402 and the inner wall of the blood vessel is improved, and the sealing degree of the second balloon segment 1402 and the blood vessel is further improved.
After the occlusion balloon 14 is secured to the vessel, the infusion pump is turned off.
After the completion of the perfusion, when the blocking balloon 14 needs to be removed from the blood vessel, the infusion pump is started to suck the liquid in the blocking balloon 14. The liquid in the blocking balloon 14 flows out from the first liquid channel 4, the second liquid channel 5 and the liquid filling pipe 6. When the liquid flows through the first liquid channel 4, the liquid pushes the impeller 8 to reversely rotate, the bevel gear 9 reversely rotates, the bevel gear ring 10 reversely rotates, the connecting rings 12 reversely rotate, and simultaneously, under the action of the thread grooves 13, the two connecting rings 12 are gradually far away, so that the first balloon segment 1401 is changed to an initial state. Simultaneously, the limiting plate 1403 slides into the limiting groove, and the second balloon segment 1402 changes to the initial state. After the occlusion balloon 14 returns to its original state, the infusion pump is turned off and the occlusion balloon 14 is removed from the vessel.
The device can automatically adjust the pouring speed and the pouring pressure through the cooperation of the control valve 22, the pressure sensor 20 and the flow sensor 18. The device adopts automatic control mode, can alleviate medical personnel's work burden, improves work efficiency. The alarm 24 is provided to alert the healthcare worker to timely handle the patient when an abnormal condition occurs. The monitoring system can monitor physiological parameters of patients in time, and is convenient for medical staff to know the conditions of the patients in time. The device has the characteristics of simple structure, convenient operation, safety, reliability, easy maintenance and the like.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (5)
1. An improved limb perfusion apparatus, characterized in that: comprises a perfusion box (1), wherein a liquid storage cavity for containing perfusion liquid is arranged in the perfusion box (1); a peristaltic pump (21), a control valve (22), a pressure sensor (20), a flow sensor (18), a temperature sensor (19), a power supply and a controller are arranged in the perfusion box (1); the outer surface of the pouring box (1) is provided with a display (23); the power supply, the peristaltic pump (21), the control valve (22), the pressure sensor (20), the flow sensor (18), the temperature sensor (19) and the display (23) are electrically connected with the controller; the pressure sensor (20), the flow sensor (18) and the temperature sensor (19) are arranged in a matched manner with the perfusion tube (2);
a liquid outlet of the peristaltic pump (21) is provided with a perfusion tube (2) through a control valve (22); the peristaltic pump (21) is used for pouring the perfusion liquid in the liquid storage cavity into the blood vessel of the limb of the patient through the perfusion tube (2), and the controller is used for adjusting the control valve (22) according to the data received by the pressure sensor (20) and the flow sensor (18);
one end of the perfusion tube (2) is communicated with a hard tube (3), and a blocking saccule (14) is sleeved on the hard tube (3); the two ends of the hard tube (3) are connected with connecting rings (12) in a threaded manner, and the blocking saccule (14) is fixedly connected between the two connecting rings (12); the hard tube (3) is provided with a driving component for driving the connecting rings (12) to rotate, under the action of the driving component, the connecting rings (12) rotate, the rotation directions of the two connecting rings (12) are opposite, the end parts of the blocking balloon (14) are twisted to enable the blocking balloon (14) to be lengthened and become tight, the blocking balloon (14) is prevented from expanding along the length direction of a blood vessel, meanwhile, the two connecting rings (12) are mutually close, the blocking balloon (14) is close to the middle, and the fitting degree of the blocking balloon (14) and the inner wall of the blood vessel is increased;
the blocking balloon (14) comprises a first balloon segment (1401), a second balloon segment (1402) and a limiting plate (1403); the two first balloon sections (1401) are respectively arranged at two ends of the second balloon section (1402), one end of the first balloon section (1401) is fixedly connected with the second balloon section (1402), and the other end of the first balloon section (1401) is fixedly connected with the connecting ring (12); the limiting plates (1403) are multiple, and the limiting plates (1403) are uniformly distributed along the outer circumference of the hard tube (3); a plurality of limit grooves are formed in the outer circumference of the hard pipe (3) along the axial direction, the limit grooves correspond to the limit plates (1403) one by one, and the limit plates (1403) are arranged in the corresponding limit grooves in a sliding mode; one side of the limiting plate (1403) far away from the hard tube (3) is fixedly connected with the inner wall of the second balloon section (1402).
2. An improved limb perfusion apparatus according to claim 1, wherein: the driving assembly comprises an impeller (8), a bevel gear ring (10) and a fixed rod (11); a first liquid channel (4) and a second liquid channel (5) are formed in the inner wall of the hard pipe (3), one end of the second liquid channel (5) is communicated with a liquid injection pipe (6), and the other end of the second liquid channel (5) is communicated with the first liquid channel (4); one end of the first liquid channel (4) away from the second liquid channel (5) is communicated with the blocking balloon (14); a rotating shaft (7) is rotatably arranged in the first liquid channel (4), and an impeller (8) is fixedly arranged on the rotating shaft (7); one end of the rotating shaft (7) extends into the blocking saccule (14) and is coaxially and fixedly connected with a bevel gear (9); the conical tooth rings (10) are provided with two conical tooth rings and are all rotatably sleeved on the hard pipe (3), the two conical tooth rings (10) are respectively arranged on two sides of the bevel gear (9) and are all meshed with the bevel gear (9), a plurality of fixing rods (11) are all fixed on the end face of each conical tooth ring (10), and the connecting rings (12) are in sliding connection with the fixing rods (11) on the same side.
3. An improved limb perfusion apparatus according to claim 1, wherein: the system also comprises a monitoring system for detecting the physiological parameters of the patient, wherein the monitoring system comprises a blood pressure detector (15), a heart rate monitor (17) and an oximeter (16).
4. An improved limb perfusion apparatus according to claim 3, wherein: the blood pressure monitor also comprises an alarm (24), wherein the alarm (24) is electrically connected with the controller, and when the detection values of the blood pressure monitor (15), the heart rate monitor (17) and the oximeter (16) are abnormal, the alarm (24) can be automatically triggered to remind medical staff to conduct timely treatment.
5. An improved limb perfusion apparatus according to claim 1, wherein: a temperature control system for adjusting the temperature of the perfusion fluid is arranged in the perfusion box (1); the temperature control system is electrically connected with the controller, and the controller controls the temperature control system according to the measured value of the temperature sensor (19) so as to regulate the temperature of the perfusate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN117582577A (en) | 2024-02-23 |
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