Joint device for rapid aorta suspension and lossless fixation in heart transplantation

Abstract

The invention discloses a connector device for rapid suspension and lossless fixation of aorta in heart transplantation, and relates to the technical field of heart transfer equipment, the connector device comprises a connector main body, the connector main body comprises an aorta connector, and a clamping mechanism is arranged on the circumferential side of the aorta connector; the clamping mechanism comprises a fixing ring, a conical barrel and a plurality of wedge-shaped clamping jaws. Through the arrangement of the aorta connector, the clamping mechanism, the flexible parts and the like, the multiple wedge-shaped clamping jaws clamp and fix the aorta blood vessel wall through axial movement of the conical barrel, the multiple flexible parts make direct contact with the aorta blood vessel wall and wrap the aorta blood vessel wall, damage to the aorta blood vessel wall due to hard contact is avoided, and the aorta blood vessel wall is protected; and compared with a purse-string suture mode, the device has the advantages of stable circumferential clamping force and short operation time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heart rotation equipment, and particularly relates to a joint device for rapid suspension and non-damage fixation of a main artery in heart transplantation. BACKGROUND

[0002] In a heart transportation and transplantation operation, a donor heart needs to be connected with an extracorporeal circulation machine or a perfusion device, and the connection of the main artery is a crucial step. The current standard operation mode usually adopts the following manner: first, the end of the main artery is clamped with a vascular clamp, then a traditional main artery cannula is inserted, and finally the wall of the main artery is tightly tied on the cannula with a bandage or a purse-string suture to prevent falling off and leakage.

[0003] However, this mode has many defects: the purse-string suture itself is a delicate and time-consuming operation, which requires the operator to complete precise circular suture in a limited space and ensure uniform tension and no leakage. In the context of heart transplantation, every minute of ischemic time is directly related to the survival rate of myocardial cells and the possibility of postoperative functional recovery. Therefore, the additional time consumed by the purse-string suture not only increases the total length of cold ischemia and hot ischemia, but also may become a key negative factor affecting the success rate of transplantation.

[0004] Moreover, the existing fixation mode mainly relies on bandage winding or suture tightening to achieve sealing. When the donor heart moves slightly during transportation, placement or access to the perfusion system, the combined interface between the cannula and the main artery is easily subjected to shear force, resulting in loosening or even complete falling out. Once the cannula falls off, it will cause perfusion interruption, which will lead to serious consequences.

[0005] In addition, the purse-string suture mode is highly dependent on the suture experience of the operator, and the thickness of the main artery wall varies significantly with gender and age. If the clamping of the vascular clamp and the tightening action of the bandage directly press and rub the intima of the main artery end, especially in the case of a weak donor main artery wall, it is easy to induce intimal tear, plaque shedding or local thrombosis.

[0006] Therefore, the present application provides a joint device for rapid suspension and non-damage fixation of a main artery in heart transplantation to solve the above problems. SUMMARY

[0007] The present application aims to provide a joint device for rapid suspension and non-damage fixation of a main artery in heart transplantation to solve the technical problems proposed in the background.

[0008] To achieve the above object, the application provides the following technical scheme: a joint device for fast suspension and non-damage fixation of aorta in heart transplantation, comprising a joint body, wherein the joint body comprises an aorta joint, a clamping mechanism is arranged on the circumferential side of the aorta joint, and the clamping mechanism comprises: a fixing ring fixedly connected to the circumferential side of the aorta joint; a conical cylinder comprising a vertical part threadedly connected to the fixing ring, wherein a conical part is arranged on one end of the vertical part close to the aorta joint; a plurality of wedge-shaped clamping claws uniformly distributed on the circumference and slidably connected to the fixing ring, wherein the outer side of each wedge-shaped clamping claw is arranged as a slope matched with the conical part, a first elastic member is arranged between two adjacent wedge-shaped clamping claws, and a flexible part for contacting the aorta blood vessel is arranged on the inner side of the wedge-shaped clamping claw; when the conical cylinder rotates, the plurality of wedge-shaped clamping claws can move along the radial direction of the aorta joint to clamp or release the aorta blood vessel.

[0009] Preferably, the end of the aorta joint is trumpet-shaped, the surface of the aorta joint is coated with an ultralubricating coating, and a sealing groove is arranged on the outer circumferential side of the aorta joint.

[0010] Preferably, a pressure stabilizing mechanism is arranged inside each wedge-shaped clamping claw, and two flexible parts are arranged on the inner side of the wedge-shaped clamping claw, wherein the two flexible parts are distributed along the axial direction of the aorta joint, and the flexible part is arranged on the surface of the flexible part. When the plurality of wedge-shaped clamping claws approach the aorta blood vessel, the pressure stabilizing mechanism can keep the pressure inside the two flexible parts consistent and prevent the clamping force from being too large to cause damage to the aorta blood vessel.

[0011] Preferably, the pressure stabilizing mechanism comprises a cavity arranged in the wedge-shaped clamping claw, two first piston plates and second piston plates are slidably connected in the cavity, the first piston plate and the second piston plate divide the cavity into a first hydraulic chamber, a second hydraulic chamber and a detection chamber, the detection chamber is located between the first piston plate and the second piston plate, a second elastic member and a pressure detecting member are arranged in the detection chamber. An oil channel is arranged on the side wall of the first hydraulic chamber and the second hydraulic chamber, respectively, and the oil channel is in communication with the two flexible parts, the first hydraulic chamber, the second hydraulic chamber, the oil channel and the two flexible parts are filled with liquid medium, and the flexible part is a liquid storage bag.

[0012] Preferably, the pressure detecting member is two electric contacts, the two electric contacts are fixed on the opposite sides of the first piston plate and the second piston plate, respectively, a signal lamp electrically connected to the two electric contacts is arranged on the fixing ring, and the signal lamp is turned on when the two electric contacts are in contact.

[0013] Preferably, the second piston plate and the second hydraulic cavity are further provided with a locking part, when the first piston plate and the second piston plate are close to each other and the two electric contact pieces are in contact, the locking part locks the second piston plate, so that the hydraulic pressure in the second hydraulic cavity is always in a constant pressure state.

[0014] Preferably, the locking part comprises a fixed rod fixedly connected with the inner wall of the second hydraulic cavity, a rotating barrel coaxially arranged with the fixed rod is rotatably connected to the second piston plate, the rotating barrel is a one-side opening cylindrical structure, a spiral track is formed on the circumferential side of the fixed rod, a connecting block matched with the spiral track is arranged on the inner wall of the rotating barrel, a sliding groove is formed on the side of the second piston plate close to the fixed rod, an annular plate is sealingly and slidably connected in the sliding groove, a third elastic part is arranged between the annular plate and the sliding groove, a connecting plate is coaxially fixed on the side of the rotating barrel in the sliding groove, and the connecting plate and the annular plate are provided with locking parts matched with each other. During the slow contact of the two electric contact pieces, the annular plate moves to the side of the connecting plate under the hydraulic pressure in the second hydraulic cavity and overcomes the elastic force of the third elastic part, and after the two electric contact pieces are in contact, the locking parts make the rotating barrel unable to rotate, so that the second piston plate is in a locked state.

[0015] Preferably, the locking part comprises a first gear ring fixedly connected to the connecting plate, and a second gear ring matched with the first gear ring is arranged on the side of the annular plate close to the connecting plate.

[0016] Preferably, the flexible part is a plurality of soft horizontal strips arranged at intervals.

[0017] Preferably, one end of the aortic connector is fixedly connected with a connecting valve, a hanging fixing cylinder is arranged between the aortic connector and the connecting valve, and the circumferential side of the hanging fixing cylinder is fixedly connected with an external stent.

[0018] The present application has the following advantages: The present application is provided with an aortic connector, a clamping mechanism and a flexible part, the axial movement of the tapered cylinder makes the plurality of wedge-shaped clamping jaws clamp and fix the aortic blood vessel wall, and the plurality of flexible parts directly contact the aortic blood vessel wall and wrap the aortic blood vessel wall, which not only avoids damage caused by hard contact, but also has the advantages of stable circumferential clamping force and short operation time compared with the purse-string suture method. In addition, the provision of the two hydraulic cavities and the two piston plates makes the clamping force of the two flexible parts consistent, and in the process of stable pressure increase, when the two electric contact pieces are in contact and the signal lamp is on, it represents that the clamping force of the wedge-shaped clamping jaws on the aortic blood vessel reaches a threshold value, and the operator no longer rotates the tapered cylinder. Even if the blood vessel wall thickness is different due to different ages, different genders or diseases, the connector body can still clamp the aortic blood vessels of different thicknesses, and the clamping force is always consistent, which avoids damage to the aortic blood vessels caused by excessive clamping force. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a connector device for rapid aortic suspension and non-destructive fixation during heart transplantation according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the connector body of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the present invention, showing the interaction between multiple wedge-shaped clamps and the aortic connector.

[0022] Figure 4 This is a schematic diagram showing the interaction between the multiple wedge-shaped grippers and the first elastic element of the present invention.

[0023] Figure 5 For the present invention Figure 2 The structural cross-sectional view at point AA.

[0024] Figure 6 for Figure 5 A magnified view of the area along direction A.

[0025] Figure 7 This is a schematic diagram showing the interaction between the flexible component and the wedge-shaped gripper of the present invention.

[0026] Figure 8 This is a cross-sectional schematic diagram of the locking component and the voltage stabilizing mechanism of the present invention.

[0027] Figure 9 for Figure 8 A magnified view of the area along direction B.

[0028] Figure 10 This is a schematic diagram of the structure of the locking member and the locking mechanism of the present invention.

[0029] The attached figures are labeled as follows: 1. Connector body; 11. Aortic connector; 12. Connecting valve; 13. Suspension fixing cylinder; 2. Clamping mechanism; 21. Fixing ring; 22. Conical cylinder; 221. Vertical part; 222. Conical part; 23. Wedge-shaped gripper; 24. First elastic element; 25. Flexible part; 26. Sealing groove; 3. Pressure stabilizing mechanism; 31. First piston plate; 32. Second piston plate; 33. First hydraulic chamber; 34. Second hydraulic chamber; 35. Detection chamber; 36. Second elastic element; 37. Pressure detection element; 371. Electrical contact; 38. Oil passage; 4. Flexible components; 5, locking member; 51, fixing rod; 52, rotating drum; 53, spiral track; 54, sliding groove; 55, annular plate; 56, third elastic member; 57, connecting plate; 58, locking member; 581, first tooth ring; 582, second tooth ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative effort fall within the protection scope of the present application. EMBODIMENT

[0031] In a heart transport transplantation operation, since purse string suture itself is a delicate and time-consuming operation, the operator is required to complete accurate annular suture in a limited space and ensure uniform tension and no leakage. In the context of heart transplantation, every minute of ischemic time is directly related to the survival rate of myocardial cells and the possibility of postoperative functional recovery. Therefore, the additional time consumed by purse string suture not only increases the total length of cold ischemia and hot ischemia, but also may become a key negative factor affecting the success rate of transplantation. To solve the above problems, the embodiment is invented.

[0032] Referring to Figures 1 to 10 An embodiment of the present application is a joint device for rapid suspension and lossless fixation of a main artery in a heart transplantation operation, which comprises a joint body 1. The joint body 1 comprises a main artery joint 11. One end of the main artery joint 11 is fixedly connected with a connecting valve 12. A suspension fixing cylinder 13 is arranged between the main artery joint 11 and the connecting valve 12. The circumferential side of the suspension fixing cylinder 13 is fixedly connected with an external support. The circumferential side of the main artery joint 11 is provided with a clamping mechanism 2. The clamping mechanism 2 comprises a fixed ring 21, a conical cylinder 22 and a plurality of wedge-shaped clamping jaws 23.

[0033] The fixed ring 21 is fixedly connected to the circumferential side of the main artery joint 11.

[0034] The conical cylinder 22 comprises a vertical part 221 which is threadedly connected with the fixed ring 21. The vertical part 221 is provided with a conical part 222 at one end close to the main artery joint 11.

[0035] The plurality of wedge-shaped clamping jaws 23 are circumferentially distributed on the outer circumferential side of the main artery joint 11 and are slidably connected with the fixed ring 21. The outer side of each wedge-shaped clamping jaw 23 is provided with a slope which matches the conical part 222. A first elastic member 24 is arranged between two adjacent wedge-shaped clamping jaws 23. The inner side of the wedge-shaped clamping jaw 23 is provided with a flexible part 25 for contacting the main artery.

[0036] When the tapered cylinder 22 rotates, the plurality of wedge-shaped clamping jaws 23 can move radially along the aortic joint 11 to clamp or release the aortic blood vessel.

[0037] It should be noted that the connecting valve 12 is provided with a pressure monitoring interface and a perfusion side branch interface in communication with the aortic joint 11. During perfusion, the perfusion pressure can be monitored in real time through the pressure monitoring interface, and the perfusion side branch interface is connected to the oxygenator through a pipeline. The blood mixed with oxygen by the oxygenator enters the aortic joint 11 through the pipeline and the perfusion side branch interface, and finally perfuses into the heart through the aortic blood vessel.

[0038] Please refer to Figure 2 and Figure 6 , the end of the aortic joint 11 is trumpet-shaped and its surface is coated with a super-lubricating coating, and a sealing groove 26 is formed on the outer circumferential side of the aortic joint 11.

[0039] Please refer to Figure 4 , the flexible part 25 is a plurality of soft transverse strips arranged at intervals.

[0040] In heart transplant transportation, when the donor heart needs to be connected, the aortic joint 11 coated with a super-lubricating coating is dipped in physiological saline, and then gently inserted into the aortic stump of the donor heart. After being inserted into position, the operator stabilizes the joint body 1 with one hand and rotates the tapered cylinder 22 to move the tapered cylinder 22 away from the aortic stump. At this time, the tapered part 222 of the tapered cylinder 22 interacts with the inclined surface of the plurality of wedge-shaped clamping jaws 23, and the axial movement of the tapered cylinder 22 is converted into the radial movement of the plurality of wedge-shaped clamping jaws 23, so that the plurality of wedge-shaped clamping jaws 23 synchronously and smoothly move towards the aortic blood vessel wall, until the flexible part 25 gently and firmly holds the aortic blood vessel wall.

[0041] In addition to the use of the connecting valve 12 and the suspension fixing cylinder 13, the female head of the extracorporeal circulation arterial pipeline that has been pre-charged with air is aligned with the male head of the connecting valve 12, and is inserted to the bottom with force. When the locking sound is heard, it indicates that the connection is complete, the self-closing valve core inside is pushed open, and the pipeline is smooth. At this time, the operator can connect the suspension bracket connected externally through the suspension fixing cylinder 13, and the operator can suspend and adjust the heart to the best position and angle for transportation operation.

[0042] After the transplantation transportation is completed, the connecting valve 12 is disconnected, the valve core inside is automatically closed to prevent blood from flowing out, then the tapered cylinder 22 is reversed, the plurality of wedge-shaped clamping jaws 23 are reset under the action of the first elastic member 24, and then the joint body 1 is removed from the aortic blood vessel.

[0043] In summary, through the aortic joint 11, clamping mechanism 2 and flexible part 25, etc. are provided, the axial movement of the tapered cylinder 22 makes the multiple wedge-shaped clamping jaws 23 clamp and fix the aortic vessel wall, like a "gentle hand", the multiple flexible parts 25 directly contact the aortic vessel wall, wrap the aortic vessel wall, avoid damage caused by hard contact, compared with the purse string suture method, has the advantages of stable circumferential clamping force and short operation time, and avoids the problem of long time of purse string suture leading to cardiac ischemia. Embodiment

[0044] Because the purse string suture method is highly dependent on the suture experience of the operator, and the thickness of the aortic vessel wall is significantly different from gender and age, if the clamping of the vessel forceps and the over-tightening of the binding action directly press and rub the intima of the aortic stump, especially in the case of a weak donor aortic wall, it is easy to induce intimal tear, plaque shedding or local thrombosis. Therefore, the present embodiment is further improved on the basis of the above embodiment.

[0045] Please refer to Figures 5 to 7 Each of the wedge-shaped clamping jaws 23 is provided with a pressure stabilizing mechanism 3, and the inner side of the wedge-shaped clamping jaw 23 is provided with two flexible members 4, and the flexible part 25 is arranged on the surface of the flexible member 4.

[0046] When the multiple wedge-shaped clamping jaws 23 approach the aortic vessel, the pressure stabilizing mechanism 3 can keep the pressure inside the two flexible members 4 consistent, and prevent the clamping force from causing damage to the aortic vessel.

[0047] Please refer to Figure 7 The pressure stabilizing mechanism 3 includes a cavity opened in the wedge-shaped clamping jaw 23, two first piston plates 31 and second piston plates 32 are sealingly and slidably connected in the cavity, the first piston plate 31 and the second piston plate 32 divide the cavity into a first hydraulic chamber 33, a second hydraulic chamber 34 and a detection chamber 35, the detection chamber 35 is located between the first piston plate 31 and the second piston plate 32, and the detection chamber 35 is provided with a second elastic member 36 and a pressure detecting member 37.

[0048] Oil channels 38 are respectively arranged on the side walls of the first hydraulic chamber 33 and the second hydraulic chamber 34 and communicated with the two flexible members 4, the first hydraulic chamber 33, the second hydraulic chamber 34, the oil channels 38 and the interiors of the two flexible members 4 are filled with liquid medium, the flexible member 4 is a liquid storage bag, and in the present embodiment, the liquid medium can be selected from medical liquids harmless to human body such as physiological saline.

[0049] Please refer to Figure 9As shown, the pressure detection member 37 is two electric contacts 371, and the two electric contacts 371 are respectively fixed on the opposite sides of the first piston plate 31 and the second piston plate 32. The fixed ring 21 is provided with a signal lamp electrically connected with the two electric contacts 371. When the two electric contacts 371 are in contact, the signal lamp is lit.

[0050] On the basis of the above embodiment, in use, flexible members 4 are arranged at intervals on the inner side of the plurality of wedge-shaped clamping jaws 23, and the flexible portions 25 are located on the surface of the flexible members 4. In the process of gradually closing and clamping the aortic vessel wall by the plurality of wedge-shaped clamping jaws 23, the two flexible members 4 are deformed after being in contact with the aortic vessel, and the liquid medium in the interior thereof enters the first hydraulic chamber 33 and the second hydraulic chamber 34, respectively. At this time, the first piston plate 31 and the second piston plate 32 slide up and down in the cavity to make the pressure in the two hydraulic chambers consistent. Then, with the continuous increase of the pressure in the first hydraulic chamber 33 and the second hydraulic chamber 34, the first piston plate 31 and the second piston plate 32 approach each other after overcoming the force of the second elastic member 36, until the two electric contacts 371 are in contact, and the signal lamp is lit, representing that the pressure in the two hydraulic chambers reaches a predetermined threshold. After the operator sees the signal lamp lit, the conical barrel 22 is no longer rotated.

[0051] In summary, through the arrangement of the pressure stabilizing mechanism 3, the flexible members 4 and the electric contacts 371, the two flexible members 4 clamp the aortic vessel respectively, and the two flexible members 4 are distributed along the length direction of the aortic vessel to form double clamping. Through the arrangement of the two hydraulic chambers and the two piston plates, the clamping force of the two flexible members 4 on the aortic vessel is kept consistent, and in the process of stable pressure increase, when the two electric contacts 371 are in contact to make the signal lamp lit, it represents that the clamping force of the wedge-shaped clamping jaw 23 on the aortic vessel reaches the threshold, and the operator no longer rotates the conical barrel 22. Even if the thickness of the aortic vessel is different due to different ages, different genders or diseases, the joint body 1 can still clamp the aortic vessel with different thicknesses, and the clamping force is always consistent, avoiding damage to the aortic vessel caused by excessive clamping force. Embodiment

[0052] Since the existing fixing method mainly relies on the sealing of yarn band winding or sewing, when the donor heart moves slightly during transportation, placement or connection to the perfusion system, the combination interface between the cannula and the aorta is easily subjected to shearing force, resulting in loosening or even complete falling out. Once the cannula falls out, the perfusion is interrupted, which may cause serious consequences.

[0053] Please refer to Figures 8 to 10The second piston plate 32 and the second hydraulic cavity 34 are provided with a locking member 5, when the first piston plate 31 and the second piston plate 32 are close to each other and the two electric contact pieces 371 are contacted, the locking member 5 locks the second piston plate 32, so that the hydraulic pressure in the second hydraulic cavity 34 is always in a constant pressure state.

[0054] The locking member 5 comprises a fixed rod 51 fixedly connected with the inner wall of the second hydraulic cavity 34, the second piston plate 32 is rotatably connected with a rotating barrel 52 coaxially arranged with the fixed rod 51, the rotating barrel 52 is a barrel structure with one side opening, the circumferential side of the fixed rod 51 is provided with a spiral track 53, the inner wall of the rotating barrel is provided with a connecting block matched with the spiral track 53, the side of the second piston plate 32 close to the fixed rod 51 is provided with a sliding groove 54, the sliding groove 54 is sealingly and slidably connected with an annular plate 55, the inner ring side and the outer ring side of the annular plate 55 are sealingly and slidably connected with the circumferential side of the rotating barrel 52 and the inner wall of the sliding groove 54 respectively, the annular plate 55 and the sliding groove 54 are provided with a third elastic member 56, the side of the rotating barrel 52 coaxially fixed in the sliding groove 54 is fixedly connected with a connecting plate 57, the connecting plate 57 and the annular plate 55 are provided with locking members 58 matched with each other.

[0055] During the slow contact of the two electric contact pieces 371, the annular plate 55 is driven by the hydraulic pressure in the second hydraulic cavity 34 to move to the side of the connecting plate 57 against the elastic force of the third elastic member 56, after the two electric contact pieces 371 are contacted, the locking members 58 make the rotating barrel 52 unable to rotate, so that the second piston plate 32 is in a locked state.

[0056] The locking members 58 comprise a first tooth ring 581 fixedly connected with the connecting plate 57, the side of the annular plate 55 close to the connecting plate 57 is provided with a second tooth ring 582 matched with the first tooth ring 581.

[0057] In use, during the process that the first piston plate 31 and the second piston plate 32 are close to each other, the rotating barrel 52 and the fixed rod 51 form a rotating fit, during the process that the second piston plate 32 moves upward, the rotating barrel 52 rotates under the action of the spiral track 53 and the connecting block, and with the increase of the liquid pressure in the second hydraulic cavity 34, the annular plate 55 slowly moves to the side of the connecting plate 57 against the elastic force of the third elastic member 56 under the pushing of the liquid, when the liquid pressure in the second hydraulic cavity 34 reaches a predetermined threshold value, the first tooth ring 581 and the second tooth ring 582 are engaged, and the rotating barrel 52 stops rotating.

[0058] To prevent the aortic vessel from slipping during clamping, as the aortic end gradually slips, the flexible member 4 connected to the first hydraulic chamber 33 gradually deforms, and the liquid pressure in the first hydraulic chamber 33 gradually decreases or tends to decrease. At this time, the second piston plate 32 is locked and cannot move upward, and the second elastic member 36, which is in a compressed state, gradually releases its elastic potential energy to compensate for the pressure in the first hydraulic chamber 33, so that the flexible member 4 on this side can always effectively clamp the aortic vessel.

[0059] To supplement the reset process of locking element 5, after the transfer is completed, the operator rotates the conical cylinder 22 in the opposite direction, the two flexible elements 4 gradually reset and the pressure in the first hydraulic chamber 33 and the second hydraulic chamber 34 gradually decreases. At this time, the annular plate 55 gradually resets under the action of the third elastic element 56, the first toothed ring 581 and the second toothed ring 582 disengage, the rotating cylinder 52 resumes rotation, and the second piston plate 32 is released from the locked state.

[0060] And, as Figure 6 As shown, the sealing groove 26 opened on the circumferential side of the aortic connector 11 forms a clamping fit with the flexible member 4. The middle part of the flexible member 4 corresponds to the edge of the sealing groove 26. During the process of the flexible member 4 clamping the aortic blood vessel, the flexible member 4 makes the blood vessel fit more closely to the sealing groove 26, further improving the fixation effect of the flexible member 4 on the aortic blood vessel.

[0061] In addition, once the aortic blood vessel slips, the pressure inside the first hydraulic chamber 33 decreases, causing the first piston plate 31 to move upward and the two electrical contacts 371 to disengage. Then the indicator light goes out, and the operator can directly see the clamping status of the aorta and make timely adjustments.

[0062] In summary, through the cooperation of the locking element 5, the pressure stabilizing mechanism 3, and the detection element, when the aortic blood vessel slips out, the second piston plate 32 is locked under the action of the locking element 5, the pressure in the second chamber remains unchanged, and the second elastic element 36, which is in a compressed state, gradually compensates for the pressure in the first hydraulic chamber 33, so that the flexible element 4 near the aortic end always effectively clamps the blood vessel, reducing the slippage speed of the aortic blood vessel. During this process, the operator can use the indicator light status to provide feedback on the clamping status of the aortic blood vessel, detect it early, and take remedial measures in a timely manner, thereby improving the reliability of the connector body 1.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A connector device for rapid aortic suspension and non-destructive fixation during heart transplantation, characterized in that, The connector body includes an aortic connector, and a clamping mechanism is provided on the circumferential side of the aortic connector. The clamping mechanism includes: A fixing ring is fixedly connected to the circumferential side of the aortic connector; A conical cylinder includes a vertical portion that is threadedly connected to a retaining ring, wherein the vertical portion has a conical portion at one end near the aortic connector; Multiple wedge-shaped grippers are evenly distributed around their circumference and slidably connected to a fixing ring. The outer side of each wedge-shaped gripper is provided with an inclined surface that matches the conical part. A first elastic element is provided between two adjacent wedge-shaped grippers. The inner side of each wedge-shaped gripper is provided with a flexible part for contacting the aortic blood vessel. When the conical cylinder rotates, multiple wedge-shaped jaws can move radially along the aortic connector to clamp or release the aortic vessels.

2. The connector device for rapid aortic suspension and non-destructive fixation during heart transplantation as described in claim 1, characterized in that, The end of the aortic connector is flared and its surface is coated with a super-lubricating coating. A sealing groove is provided on the outer circumference of the aortic connector.

3. The connector device for rapid aortic suspension and non-destructive fixation during heart transplantation as described in claim 2, characterized in that, Each of the wedge-shaped grippers is provided with a pressure stabilizing mechanism inside, and two flexible members are provided on the inner side of the wedge-shaped gripper. The two flexible members are distributed along the axial direction of the aortic connector, and the flexible part is provided on the surface of the flexible member. When the multiple wedge-shaped grippers approach the aorta, the pressure stabilizing mechanism ensures that the pressure inside the two flexible components remains consistent and prevents excessive clamping force from damaging the aorta.

4. A connector device for rapid aortic suspension and non-destructive fixation during heart transplantation as described in claim 3, characterized in that, The pressure stabilizing mechanism includes a cavity inside the wedge-shaped gripper. Two spaced-apart first piston plates and second piston plates are sealed and slidably connected inside the cavity. The first piston plates and second piston plates divide the cavity into a first hydraulic chamber, a second hydraulic chamber, and a detection chamber. The detection chamber is located between the first piston plates and the second piston plates. A second elastic element and a pressure detection element are provided inside the detection chamber. The first hydraulic chamber and the second hydraulic chamber are respectively provided with oil passages that communicate with the two flexible components. The first hydraulic chamber, the second hydraulic chamber, the oil passages and the interior of the two flexible components are filled with liquid medium, and the flexible components are liquid storage bladders.

5. A connector device for rapid aortic suspension and non-destructive fixation during heart transplantation as described in claim 4, characterized in that, The pressure detection element consists of two electrical contacts, which are respectively fixed on opposite sides of the first piston plate and the second piston plate. The fixing ring is equipped with an indicator light that is electrically connected to the two electrical contacts. When the two electrical contacts are in contact, the indicator light illuminates.

6. A connector device for rapid aortic suspension and non-destructive fixation during heart transplantation as described in claim 5, characterized in that, The second piston plate and the second hydraulic chamber are also equipped with a locking element. When the first piston plate and the second piston plate approach each other and the two electrical contacts come into contact, the locking element locks the second piston plate, so that the hydraulic pressure in the second hydraulic chamber is always in a constant pressure state.

7. A connector device for rapid aortic suspension and non-destructive fixation during heart transplantation as described in claim 6, characterized in that, The locking component includes a fixed rod fixedly connected to the inner wall of the second hydraulic chamber, a rotating cylinder coaxially arranged with the fixed rod rotatably connected to the second piston plate, the rotating cylinder being a cylindrical structure with one side open, a spiral track being provided on the circumferential side of the fixed rod, a connecting block matching the spiral track being provided on the inner wall of the rotating cylinder, a sliding groove being provided on the side of the second piston plate near the fixed rod, an annular plate being slidably connected in the sliding groove, a third elastic element being provided between the annular plate and the sliding groove, a connecting plate being coaxially fixed on the side of the rotating cylinder located in the sliding groove, and locking components cooperating with each other being provided on the connecting plate and the annular plate; During the slow contact of the two electrical contacts, the annular plate moves to one side of the connecting plate under the hydraulic drive of the second hydraulic chamber, overcoming the elastic force of the third elastic element. After the two electrical contacts contact, the locking element prevents the rotating drum from rotating, thus locking the second piston plate.

8. A connector device for rapid aortic suspension and non-destructive fixation during heart transplantation according to claim 7, characterized in that, The locking element includes a first toothed ring fixedly connected to the connecting plate, and a second toothed ring matching the first toothed ring is provided on the side of the annular plate near the connecting plate.

9. A connector device for rapid aortic suspension and non-destructive fixation during heart transplantation as described in claim 8, characterized in that, The flexible part consists of multiple spaced-apart soft horizontal bars.

10. A connector device for rapid aortic suspension and non-destructive fixation during heart transplantation according to claim 9, characterized in that, A connecting valve is fixed to one end of the aortic connector, and a suspension fixing cylinder is provided between the aortic connector and the connecting valve. The circumferential side of the suspension fixing cylinder is fixedly connected to an external bracket.

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