Free flap in-vitro remote blood supply device applied to plastic surgery

Abstract

The invention discloses a free flap in-vitro remote blood supply device applied to plastic surgery in the technical field of plastic surgery, which comprises an alignment buckle, a first limiting plate, a second limiting plate and a central column, and is characterized in that the outer wall of the central column between the first limiting plate and the second limiting plate is rotationally connected with a vein chamber and fixedly connected with an artery chamber respectively; the artery cavity is located below the vein cavity, the second limiting plate is rotationally connected to the bottom of the center column, the interior of the vein cavity is divided into a rolling cavity through a partition plate, and the outer wall of the artery cavity communicates with a first catheter and a second catheter; the ends, away from the artery cavity, of the first catheter and the second catheter are communicated with an artery puncture needle and a flap artery anastomosis needle respectively, the outer wall of the vein cavity is communicated with a third catheter and a fourth catheter respectively, and the ends, away from the vein cavity, of the third catheter and the fourth catheter are communicated with a flap vein anastomosis needle and a vein puncture needle respectively. The device is scientific and reasonable, and the overall stability of the device is improved through cooperation of the winding structure and the heat preservation quilt.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic surgery, and in particular is an extracorporeal distal blood supply device for a free flap used for plastic surgery. Background Art

[0002] Free flap transplantation is a commonly used repair technique in plastic surgery, especially when dealing with skin and soft tissue defects. This technique achieves the purpose of repair by cutting skin with blood supply and its attached free flap and transplanting it to the defect site. The survival of the free flap depends on the integrity of its vascular pedicle, so during the transplantation process, it is necessary to ensure that the blood vessels of the flap are accurately anastomosed with those of the recipient area. Since the free flap needs to be cut from the donor area and its vascular pedicle is temporarily severed before transplantation, an extracorporeal distal blood supply device is required to provide a stable blood supply to the flap before and during transplantation. This device can simulate the blood circulation environment in the body, provide the flap with necessary nutrients and oxygen, and take away metabolic waste, thereby maintaining the activity and survival of the flap.

[0003] When using an extracorporeal remote blood supply device, a puncture needle needs to be inserted into the artery and vein of the donor site to obtain blood. However, the stability of the puncture needle and catheter in existing devices may be insufficient, and they are prone to hypothermia, displacement or detachment during surgery, resulting in poor blood supply quality, interruption or flap damage.

[0004] In summary, how to improve the stability of the extracorporeal distal blood supply device has become an urgent problem to be solved by technicians in this field. Therefore, it is necessary to propose an extracorporeal distal blood supply device for free flaps used for plastic surgery. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide an extracorporeal distal blood supply device for free flaps for plastic surgery, which prevents the disorderly arrangement of the catheter during the operation through a rolling structure and optimizes the blood flow path. The rolling structure cooperates with the thermal blanket to wrap and heat the catheter and the rolling structure as a whole to prevent blood from hypothermia, thereby improving the overall stability of the device.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: an extracorporeal distal blood supply device for free flaps for plastic surgery, comprising an alignment buckle, a first limit plate, a second limit plate and a center column, the outer wall of the center column between the first limit plate and the second limit plate is respectively rotatably connected to a venous chamber and fixedly connected to an arterial chamber, the arterial chamber is located at the bottom of the venous chamber, the second limit plate is rotatably connected to the bottom of the center column, the venous chamber is separated by a partition with a winding chamber, a multi-section winding sheet is fixedly connected to the winding chamber, and a micro peristaltic pump is fixedly connected to the venous chamber.

[0007] The outer wall of the arterial cavity is connected with a first catheter and a second catheter respectively, and the ends of the first catheter and the second catheter away from the arterial cavity are connected with an arterial puncture needle and a flap arterial anastomosis needle respectively; the outer wall of the venous cavity is connected with a third catheter and a fourth catheter respectively, and the ends of the third catheter and the fourth catheter away from the venous cavity are connected with a flap venous anastomosis needle and a venous puncture needle respectively; the inner walls of the alignment buckle are detachably connected with a battery and a filter cartridge respectively, the battery is electrically connected to a micro peristaltic pump, the arterial cavity is separated into two chambers by a partition, the outer wall of the central column in the arterial cavity is connected with two arterial transmission tubes, and the other ends of the arterial transmission tubes are connected to the two sides of the filter cartridge respectively.

[0008] The basic principles and beneficial effects of adopting the above scheme are as follows:

[0009] Basic principle: The winding structure is composed of the first limit plate, the central column, the second limit plate, the venous chamber and the arterial chamber. The venous chamber is provided with a winding chamber and a multi-section winding sheet, which are used to orderly wind up and fix key components such as the first catheter, the second catheter, the third catheter and the fourth catheter, so as to avoid the disorder of the catheter during the operation, reduce the interference of the operation and improve the safety of the operation. At the same time, the arterial chamber and the venous chamber are responsible for the transmission of arterial blood and venous blood respectively, and the power is provided by the micro peristaltic pump to ensure the smooth flow of blood in the catheter.

[0010] Beneficial effects:

[0011] 1. The present invention integrates the catheter system in an orderly manner through the design of the rolling structure, avoids the disorderly arrangement of the catheter during the operation, reduces operational interference, makes the blood flow path clearer and smoother, and improves the operation efficiency.

[0012] 2. The present invention has a compact structure, and the components are tightly connected, which is convenient for carrying and surgical operation. At the same time, the detachable design of the positioning buckle, battery, filter cartridge and other components also facilitates the maintenance and replacement of the device.

[0013] 3. The rolling structure of the present invention not only plays a limiting role, but also optimizes the blood flow path, making the blood transmission in the device smoother, reducing resistance and possible blood congestion, and improving the blood supply effect of the flap.

[0014] 4. The present invention integrates components such as batteries, micro peristaltic pumps, and filter cartridges to achieve the integration of power supply, blood transmission, and filtration, thereby reducing the need for external equipment during surgery, simplifying the surgical process, and reducing the complexity of surgery.

[0015] Furthermore, it also includes a thermal insulation quilt, which is provided with alignment holes for combining with alignment buckles, a plurality of heating wires are embedded in the thermal insulation quilt, and a plurality of Velcro strips are fixedly connected to one side of the thermal insulation quilt.

[0016] Beneficial effects: Several heating wires embedded in the thermal blanket can continuously and evenly emit heat, heating and insulating the internal catheter, winding structure and blood, effectively preventing the temperature of the blood from dropping during transmission, ensuring the activity and stability of the blood, and further improving the survival rate of the flap and the postoperative recovery effect.

[0017] Furthermore, a plush layer is fixedly connected to the thermal insulation quilt, and the plush layer is engaged with the Velcro.

[0018] Beneficial effects: The plush layer further improves the thermal insulation effect of the thermal blanket with its good thermal insulation and heat insulation properties. It can form a soft thermal insulation layer inside the thermal blanket, effectively reducing heat loss and ensuring that the blood maintains a stable temperature during transmission, which is crucial for the survival rate of the flap and postoperative recovery. The design of the plush layer and Velcro not only simplifies the fixing method of the thermal blanket, but also significantly improves its sealing performance. The softness and adhesion of the plush layer allow the thermal blanket to fit more closely on the catheter, reducing the gap for air circulation, thereby effectively preventing the intrusion of external cold air and ensuring the internal temperature stability.

[0019] Furthermore, the alignment buckle, the first limiting plate, the venous chamber, the arterial chamber, the central column and the second limiting plate are all made of heat-conducting materials.

[0020] Beneficial effects: The thermal conductive material has good thermal conductivity and can quickly transfer the heat in the thermal blanket to key parts, including the arterial chamber and the venous chamber. This helps to keep the temperature of the blood stable during the transmission process and prevents the activity of the blood and the blood supply effect of the flap from being affected by the local temperature drop.

[0021] Furthermore, a magnetic layer is fixedly connected to the inner wall of the alignment hole and the outer wall of the alignment buckle, and the inner wall of the alignment hole and the outer wall of the alignment buckle are magnetically matched.

[0022] Beneficial effects: The magnetic design makes it faster and more convenient to fix the thermal blanket to the alignment buckle. Medical staff only need to align the alignment hole on the thermal blanket with the alignment buckle, and the two can automatically fit together through magnetic attraction, without the need for additional fixing tools or complicated operating steps, greatly improving the efficiency of surgical preparation and cleaning.

[0023] Furthermore, both sides of the arterial puncture needle, the skin flap arterial anastomosis needle, the skin flap venous anastomosis needle and the venous puncture needle are fixedly connected with fixing belts.

[0024] Beneficial effects: The design of the fixing belt can ensure that during the operation, key components such as the arterial puncture needle, flap arterial anastomosis needle, flap venous anastomosis needle and venous puncture needle can be firmly fixed on the patient, reducing the risk of falling off or shifting due to movement or accidental touch.

[0025] Furthermore, an elastic layer is fixedly connected to the bottom of the second limiting plate.

[0026] Beneficial effects: In some surgical scenarios, the catheter needs to remain relatively still with the patient's body to ensure the accuracy and safety of the surgical operation. The elastic layer helps prevent the device from slipping or falling off during surgery by increasing the friction between the catheter and the patient's body, thereby improving stability.

[0027] Furthermore, a plurality of temperature sensors are fixedly connected to the first limiting plate, the second limiting plate and the transmission tube.

[0028] Beneficial effects: By monitoring the temperature in real time, medical staff can promptly detect and handle any situations that may cause abnormal temperature, such as heating system failure, insulation damage, or changes in patient body temperature. This helps avoid safety risks caused by abnormal temperature and improves the overall safety of surgery.

[0029] Furthermore, a plurality of one-way injection ports are provided on the top of the alignment buckle, and the one-way injection ports are all connected to the arterial transmission tube.

[0030] Beneficial effects: Since the one-way injection port is directly connected to the arterial delivery tube, medical staff can control the injection volume and speed of the drug. This control helps ensure the uniform distribution and effective absorption of the drug in the flap area, improving the accuracy and reliability of treatment.

[0031] Furthermore, a display screen is fixedly connected to the top of the alignment buckle, and the battery and the temperature sensor are both electrically connected to the display screen.

[0032] Beneficial effect: Since the temperature sensor is electrically connected to the display screen, the display screen can display the temperature information inside the winding structure and the transmission tube in real time. This allows medical staff to intuitively understand the temperature changes of blood during transmission, so as to take timely measures to adjust and ensure that the blood remains within the optimal temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is an axonometric diagram of an embodiment of the present invention.

[0034] Figure 2 It is a top view of a cross-sectional view of an alignment buckle according to an embodiment of the present invention.

[0035] Figure 3 It is a top view of a sectional view of a venous chamber according to an embodiment of the present invention.

[0036] Figure 4 It is a lateral cross-sectional view of the arterial chamber according to an embodiment of the present invention.

[0037] The figure marks in the drawings of the specification include: 1. alignment buckle; 2. first limit plate; 3. second limit plate; 4. venous puncture needle; 5. arterial puncture needle; 6. flap arterial anastomosis needle; 7. flap venous anastomosis needle; 8. filter cartridge; 9. fixing belt; 10. thermal blanket; 11. alignment hole; 12. Velcro; 13. first catheter; 14. second catheter; 15. third catheter; 16. fourth catheter; 17. battery; 18. magnetic layer; 19. arterial transmission tube; 20. one-way injection port; 21. venous chamber; 22. micro peristaltic pump; 23. central column; 24. multi-section winding sheet; 25. winding chamber; 26. display screen; 27. elastic layer; 28. arterial chamber; 29. ​​partition. DETAILED DESCRIPTION

[0038] The following is further described in detail through specific implementation methods:

[0039] Example 1

[0040] Basically as attached Figure 1-Figure 4 As shown: an extracorporeal distal blood supply device for free flap for plastic surgery, comprising an alignment buckle 1, a first limiting plate 2, a second limiting plate 3, a central column 23 and a thermal insulation blanket 10, the thermal insulation blanket 10 is provided with an alignment hole 11 for combining with the alignment buckle 1, a plurality of heating wires are embedded in the thermal insulation blanket 10, and a plurality of Velcro 12 are fixedly connected with bolts on one side of the thermal insulation blanket 10. A plush layer is bonded to the thermal insulation blanket 10, and the plush layer and the Velcro 12 are bonded and matched.

[0041] The outer wall of the center column 23 between the first limiting plate 2 and the second limiting plate 3 is respectively rotatably matched with a venous chamber 21 and fixedly connected with an arterial chamber 28 by bolts. The arterial chamber 28 is located at the bottom of the venous chamber 21. The second limiting plate 3 is rotatably matched with the bottom of the center column 23. The bottom of the second limiting plate 3 is bonded with an elastic layer 27. The venous chamber 21 is separated by a partition 29 with a winding chamber 25. The winding chamber 25 is fixedly connected with a multi-segment winding sheet 24 by bolts. The venous chamber 21 is fixedly connected with a micro peristaltic pump 22 by bolts. The alignment buckle 1, the first limiting plate 2, the venous chamber 21, the arterial chamber 28, the center column 23 and the second limiting plate 3 are all made of heat-conducting materials.

[0042] The outer wall of the arterial chamber 28 is connected to the first catheter 13 and the second catheter 14 respectively, and the ends of the first catheter 13 and the second catheter 14 away from the arterial chamber 28 are connected to the arterial puncture needle 5 and the flap arterial anastomosis needle 6 respectively. The outer wall of the venous chamber 21 is connected to the third catheter 15 and the fourth catheter 16 respectively, and the ends of the third catheter 15 and the fourth catheter 16 away from the venous chamber 21 are connected to the flap venous anastomosis needle 7 and the venous puncture needle 4 respectively. Fixing belts 9 are bonded on both sides of the arterial puncture needle 5, the flap arterial anastomosis needle 6, the flap venous anastomosis needle 7 and the venous puncture needle 4.

[0043] The inner wall of the alignment buckle 1 is detachably connected with a battery 17 and a filter cartridge 8, the battery 17 is electrically connected to the micro peristaltic pump 22, the arterial chamber 28 is separated into two chambers by a partition 29, the outer wall of the central column 23 in the arterial chamber 28 is connected with two arterial transmission tubes 19, and the other ends of the arterial transmission tubes 19 are respectively connected to the two sides of the filter cartridge 8.

[0044] Specific implementation steps:

[0045] First, insert the arterial puncture needle 5 and the venous puncture needle 4 into the patient's artery and vein respectively to ensure that the puncture is successful and the connection is tight. Then connect the flap arterial anastomosis needle 6 and the flap venous anastomosis needle 7 to the corresponding blood vessels of the flap respectively, and prepare for vascular anastomosis. The first catheter 13 and the second catheter 14 ensure that arterial blood can flow smoothly into the flap, and the third catheter 15 and the fourth catheter 16 return the blood in the flap to the patient's body. After confirming that the blood connection is completed, the arterial puncture needle 5, the venous puncture needle 4, the flap arterial anastomosis needle 6 and the flap venous anastomosis needle 7 are initially fixed by the fixing belt 9.

[0046] The doctor then adjusts the rotation of the venous chamber 21 and the arterial chamber 28 to reel in or loosen the first catheter 13, the second catheter 14, the third catheter 15 and the fourth catheter 16, and locks the reeling structure after adjusting them to the appropriate length. The battery 17 starts to power the micro peristaltic pump 22, and the micro peristaltic pump 22 starts to circulate the blood in the arterial chamber 28. The arterial transmission tube 19 sends the blood in the arterial chamber 28 to the filter cartridge 8 for filtration to remove impurities and blood clots in the blood, and then flows into the flap arterial anastomosis needle 6 through the arterial chamber 28 to provide a stable blood supply for the flap. According to the needs of the operation, the doctor controls the flow rate and flow of the blood by adjusting the parameters of the micro peristaltic pump 22 to meet the growth requirements of the flap.

[0047] Turn on the power supply of the heating wire in the thermal blanket 10 and preheat to an appropriate temperature to maintain the blood temperature required for the flap during surgery. Then accurately place the alignment buckle 1 on the alignment hole 11 of the thermal blanket 10 to ensure that it is tightly combined with the thermal blanket 10 to provide stable support and warming for subsequent vascular connection. Cover the thermal blanket 10 in the transmission area of ​​the first catheter 13, the second catheter 14, the third catheter 15 and the fourth catheter 16, and use the adhesion of the plush layer and the Velcro 12 to firmly fix the thermal blanket 10 on the patient, completing the secondary catheter fixation and wrap-type warming, reducing the temperature loss of the winding structure and the catheter.

[0048] After the operation is completed, the micro peristaltic pump 22 is first turned off, and the heat preservation blanket 10 and the fixing belt 9 are removed. Then, the connection of all catheters and puncture needles is carefully removed to avoid unnecessary harm to the patient.

[0049] Example 2

[0050] Basically as attached Figure 2 and Figure 4 As shown: The difference from the above embodiment is that a magnetic layer 18 is bonded to the inner wall of the alignment hole 11 and the outer wall of the alignment buckle 1, and the inner wall of the alignment hole 11 and the outer wall of the alignment buckle 1 are magnetically matched.

[0051] Specific implementation steps: The doctor uses the attraction of the magnetic layer 18 to gently move the alignment buckle 1 close to the alignment hole 11, and the two will automatically adsorb together. The thermal insulation blanket 10 is firmly fixed on the alignment buckle 1 without the need for additional fixing devices.

[0052] Example 3

[0053] Basically as attached Figure 4 As shown: The difference from the above embodiment is that the first limit plate 2, the second limit plate 3 and the transmission tube are all fixedly connected with a plurality of temperature sensors by bolts. The top of the alignment buckle 1 is fixedly connected with a display screen 26 by bolts, and the battery 17 and the temperature sensor are both electrically connected to the display screen 26.

[0054] Specific implementation steps: The temperature sensor transmits the monitored temperature information and the battery 17 power information to the display screen 26, and displays the temperature conditions of the first limit plate 2, the second limit plate 3 and the transmission tube in real time. Medical staff can adjust the heating intensity of the insulation blanket 10 in time according to the data on the display screen 26 to ensure that the blood in the catheter is in the best temperature environment for flap growth.

[0055] Example 4

[0056] Basically as attached Figure 1 and Figure 2 As shown: The difference from the above embodiment is that a plurality of one-way injection ports 20 are opened on the top of the alignment buckle 1, and the one-way injection ports 20 are connected to the arterial transmission tube 19.

[0057] Specific implementation steps: The doctor prepares the medicine, nutrient solution or blood anticoagulant to be injected in the syringe according to the needs of the operation and ensures that it is in a sterile state. Insert the needle of the syringe into the one-way injection port 20 at the top of the alignment buckle 1, and ensure that the one-way injection port 20 is well sealed and does not cause blood reflux.

[0058] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An extracorporeal distal blood supply device for free flaps used for plastic surgery, characterized in that: The invention comprises an alignment buckle (1), a first limiting plate (2), a second limiting plate (3) and a central column (23); the outer wall of the central column (23) between the first limiting plate (2) and the second limiting plate (3) is rotatably connected to a venous chamber (21) and fixedly connected to an arterial chamber (28); the arterial chamber (28) is located at the bottom of the venous chamber (21); the second limiting plate (3) is rotatably connected to the bottom of the central column (23); a winding chamber (25) is separated from the venous chamber (21) by a partition (29); a multi-segment winding sheet (24) is fixedly connected to the winding chamber (25); and a micro peristaltic pump (22) is fixedly connected to the venous chamber (21); The outer wall of the arterial chamber (28) is connected to a first catheter (13) and a second catheter (14), respectively; the ends of the first catheter (13) and the second catheter (14) away from the arterial chamber (28) are connected to an arterial puncture needle (5) and a flap arterial anastomosis needle (6), respectively; the outer wall of the venous chamber (21) is connected to a third catheter (15) and a fourth catheter (16), respectively; the ends of the third catheter (15) and the fourth catheter (16) away from the venous chamber (21) are connected to The skin flap venous anastomosis needle (7) and the venous puncture needle (4), the inner side walls of the alignment buckle (1) are detachably connected to a battery (17) and a filter cartridge (8), the battery (17) is electrically connected to a micro peristaltic pump (22), the arterial chamber (28) is separated into two chambers by a partition (29), the outer wall of the central column (23) in the arterial chamber (28) is connected to two arterial transmission tubes (19), and the other ends of the arterial transmission tubes (19) are respectively connected to the two sides of the filter cartridge (8).

2. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 1, characterized in that: The invention also comprises a thermal insulation quilt (10), wherein the thermal insulation quilt (10) is provided with an alignment hole (11) for combining with the alignment buckle (1), a plurality of heating wires are embedded in the thermal insulation quilt (10), and a plurality of Velcro strips (12) are fixedly connected to one side of the thermal insulation quilt (10).

3. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 2, characterized in that: A plush layer is fixedly connected to the thermal insulation quilt (10), and the plush layer is engaged with the Velcro (12).

4. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 3, characterized in that: The alignment buckle (1), the first limiting plate (2), the venous chamber (21), the arterial chamber (28), the central column (23) and the second limiting plate (3) are all made of heat-conducting materials.

5. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 4, characterized in that: The inner wall of the alignment hole (11) and the outer wall of the alignment buckle (1) are fixedly connected with a magnetic layer (18), and the inner wall of the alignment hole (11) and the outer wall of the alignment buckle (1) are magnetically matched.

6. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 5, characterized in that: Both sides of the arterial puncture needle (5), the skin flap arterial anastomosis needle (6), the skin flap venous anastomosis needle (7) and the venous puncture needle (4) are fixedly connected with fixing bands (9).

7. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 6, characterized in that: An elastic layer (27) is fixedly connected to the bottom of the second limiting plate (3).

8. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 7, characterized in that: A plurality of temperature sensors are fixedly connected to the first limit plate (2), the second limit plate (3) and the transmission pipe.

9. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 8, characterized in that: A plurality of one-way injection ports (20) are provided on the top of the alignment buckle (1), and the one-way injection ports (20) are all connected to the arterial transmission tube (19).

10. The device for extracorporeal distal blood supply for free flap for plastic surgery according to claim 9, characterized in that: A display screen (26) is fixedly connected to the top of the alignment buckle (1), and the storage battery (17) and the temperature sensor are both electrically connected to the display screen (26).

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