CN116784917A - Calcified aortic occlusion perfusion systems and methods - Google Patents
Calcified aortic occlusion perfusion systems and methods Download PDFInfo
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- CN116784917A CN116784917A CN202311061376.9A CN202311061376A CN116784917A CN 116784917 A CN116784917 A CN 116784917A CN 202311061376 A CN202311061376 A CN 202311061376A CN 116784917 A CN116784917 A CN 116784917A
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- 206010058178 Aortic occlusion Diseases 0.000 title claims abstract description 28
- 230000010412 perfusion Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 12
- 210000000709 aorta Anatomy 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 30
- 239000007924 injection Substances 0.000 claims abstract description 30
- 239000011148 porous material Substances 0.000 claims abstract description 14
- 239000002775 capsule Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 13
- 239000013013 elastic material Substances 0.000 claims description 5
- 238000001802 infusion Methods 0.000 claims description 5
- 208000010496 Heart Arrest Diseases 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 15
- 210000001367 artery Anatomy 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- 230000004087 circulation Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 238000002627 tracheal intubation Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/12031—Type of occlusion complete occlusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/1204—Type of occlusion temporary occlusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12136—Balloons
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Reproductive Health (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of medical equipment, and provides a calcified aortic occlusion perfusion system and a calcified aortic occlusion perfusion method, wherein the system comprises the following steps: the device comprises a cannula main body, a branch pipe, a plugging assembly and a limiting piece. The branch pipe is arranged on the inner wall of the cannula main body and is the same as the extension direction of the cannula, and is provided with a first opening and a second opening communicated with the outer wall of the cannula main body. The plugging assembly comprises an elastic bag body arranged in the branch pipe and a guide pipe communicated with the inner cavity of the elastic bag body, the elastic bag body is provided with a pore canal, the pore canal is parallel to the extending direction of the guide pipe, the guide pipe extends to extend out of the first opening, and the elastic bag body is suitable for extending out or retracting from the second opening under the drive of the guide pipe. One end of the liquid injection pipe extends to extend out of the first opening, and the other end of the liquid injection pipe faces the second opening. The limiting piece comprises two movable semicircular ends, and the two ends are suitable for being mutually close and clamping the aorta through respective intrados. The limiting piece limits the outer wall of the aorta, so that the aorta is not required to be burst by the expansion pressure of the elastic bag body, and the safety is improved.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a calcified aortic occlusion perfusion system and method.
Background
The main function of extracorporeal circulation operation is to drain the blood of the aorta of human body to the outside of human body, then to discharge carbon dioxide through artificial lung oxygen, and then to pump the oxygenated blood into the vein of human body for blood circulation in the blood vessel of human body.
In the three-dimensional external circulation operation, the main artery is blocked by a balloon, but the main artery of a part of patients is calcified, namely, calcium-containing compounds are adhered to the inner wall of the main artery, and the calcium-containing compounds generally are hard, so that the wall of the main artery vessel is fragile and easy to break, and in such a case, if the main artery is blocked by the balloon directly, the main artery is extremely easy to be burst by the balloon, and the life safety of the patients is seriously threatened.
In addition, during the three-dimensional external circulation operation, heart stopping fluid is injected into the heart through the aorta, and is directly injected into blood vessels nearby the heart through the cooperation of a guide wire and a cannula, so that the notch of the blood vessels is increased, and the postoperative recovery of a patient is not facilitated.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the calcified aorta is ruptured due to the balloon blockage commonly used in extracorporeal circulation operation in the prior art, and the heart is injected with the stopping fluid by an additional cannula, which is unfavorable for the recovery of a patient, so as to provide a calcified aorta blocking perfusion system and a calcified aorta blocking perfusion method.
According to a first aspect of the present invention, there is provided a calcified aortic occlusion perfusion system comprising:
a cannula body; the branch pipe is arranged on the inner wall of the cannula main body and has the same extending direction as the cannula main body, and is provided with a first opening and a second opening communicated with the outer wall of the cannula main body; the plugging assembly comprises an elastic bag body and a catheter, the elastic bag body is movably arranged in the branch pipe, the catheter is communicated with the inner cavity of the elastic bag body, the elastic bag body is provided with a pore canal, the pore canal is parallel to the extending direction of the catheter, the catheter extends to extend out of the first opening, and the elastic bag body is suitable for extending out or retracting from the second opening under the driving of the catheter; the liquid injection pipe is fixedly arranged in the pore canal, one end of the liquid injection pipe extends to extend out of the first opening, and the other end of the liquid injection pipe faces the second opening; the limiting piece comprises two movable semicircular ends, and the two ends are suitable for being mutually close to each other and clamping the aorta through respective intrados.
Optionally, the limiting piece comprises a first shearing fork arm and a second shearing fork arm which are hinged together, and the cross sections of the end heads of the first shearing fork arm and the second shearing fork arm are semicircular.
Optionally, the end of the first shearing arm and the end of the second shearing arm are combined to form a circular ring shape or a circular tube shape.
Optionally, the hole is located at the center of the elastic bag body and penetrates through the two ends of the elastic bag body.
Optionally, the first opening is provided with a first mounting block, the first mounting block is provided with a first through hole and a second through hole, the conduit passes through the first through hole, and the liquid injection pipe passes through the second through hole.
Optionally, a first seal is provided on the first opening and a second seal is provided on the second opening, the first seal and the second seal being adapted to prevent liquid or gas in the manifold from flowing out of the cannula body.
Optionally, a third through hole is provided on the first mounting block, and a gas release valve is provided on the third through hole, the gas release valve being adapted to allow gas in the branch pipe to flow out of the cannula body.
Optionally, a second mounting block is arranged on the second opening, the second mounting block is made of an elastic material, a first abutting surface and a second abutting surface are arranged on the second mounting block, the first abutting surface and the second abutting surface are turned over to the outer side or the inner side of the cannula main body under the action of external force, the end parts of the first abutting surface and the second abutting surface are abutted to form an upper circular through hole and a lower circular through hole under the action of the elastic force, and sealing surfaces positioned on the upper side and the lower side of the circular through hole are eliminated by the external force; after the elastic bag body stretches out of the cannula main body, the guide pipe and the liquid injection pipe are respectively positioned in the two circular through holes.
Optionally, the second mounting block is disposed in the cannula main body, and the outer wall of the second mounting block is an arc surface with the same shape as the outer wall of the cannula main body.
Optionally, a third sealing member is provided on the cannula body, the third sealing member being adapted to seal off the connection of the aorta with the cannula body.
According to a second aspect of the present invention, there is provided a calcified aortic occlusion perfusion method, applied to the calcified aortic occlusion perfusion system described above, comprising:
inserting the cannula body into the aorta;
pushing the elastic bag body into the aorta through the guide pipe and the liquid injection pipe, and then clamping the outer wall of the aorta corresponding to the elastic bag body through two semicircular ends of the limiting piece;
injecting gas or liquid into the elastic capsule through the catheter, and expanding the elastic capsule until the inner wall of the aorta is abutted;
and pouring cardiac arrest liquid through the liquid filling pipe.
The invention has the following advantages:
the present invention provides a calcified aortic occlusion perfusion system comprising: the device comprises a cannula main body, a branch pipe, a plugging assembly and a limiting piece. The branch pipe is arranged on the inner wall of the cannula main body and is the same as the extension direction of the cannula, and is provided with a first opening and a second opening communicated with the outer wall of the cannula main body. The plugging assembly comprises an elastic bag body and a guide pipe, wherein the elastic bag body is movably arranged in the branch pipe, the guide pipe is communicated with the inner cavity of the elastic bag body, the elastic bag body is provided with a pore canal, the pore canal is parallel to the extending direction of the guide pipe, the guide pipe extends to extend out of the first opening, and the elastic bag body is suitable for extending out or retracting from the second opening under the driving of the guide pipe. The liquid injection pipe is fixedly arranged in the pore canal, one end of the liquid injection pipe extends to extend out of the first opening, and the other end of the liquid injection pipe faces the second opening. The limiting piece comprises two movable semicircular ends, and the two ends are suitable for being mutually close and clamping the aorta through respective intrados.
When the main body of the intubation tube is used, the main body of the intubation tube can be inserted into the aorta so that the orifice and the second opening of the main body of the intubation tube are positioned in the inner cavity of the aorta, and the elastic bag body in the branch pipe is pushed to extend out of the second opening through the guide pipe and/or the liquid injection pipe until the elastic bag body is completely positioned at the corresponding position of the inner cavity of the aorta. The inner cambered surfaces of the two semicircular ends of the limiting piece are used for clamping the outer wall of the aorta corresponding to the elastic bag body in position, so that the outer wall of the aorta is ensured not to deform. And then, the elastic bag body is filled with gas or liquid through the guide pipe to enable the elastic bag body to expand to be abutted against the inner wall of the aorta so as to seal the aorta, and as the limiting piece limits the outer wall of the aorta, the aorta is not required to be burst by the expansion pressure of the elastic bag body, and the safety is improved. And then, the heart stopping fluid can be poured into the aorta through the fluid pouring pipe, so that the operation of additionally performing a tube inserting operation on the aorta is not needed, the number of wounds of the aorta is reduced, and the help is provided for postoperative recovery.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a calcified aortic occlusion perfusion system in accordance with an embodiment of the invention;
FIG. 2 is a schematic cross-sectional view of an elastic balloon according to an embodiment of the present invention;
FIG. 3 is a schematic view of a limiting member according to an embodiment of the present invention;
fig. 4 is an enlarged view at a in fig. 1;
fig. 5 is an enlarged view at B in fig. 1;
fig. 6 is a schematic structural view of a second mounting block in an embodiment of the present invention.
Reference numerals illustrate:
1. a cannula body; 11. a first opening; 111. a first mounting block; 12. a second opening; 121. a second mounting block; 1211. a first mating surface; 1212. a second abutment surface; 13. a first seal; 14. a second seal; 15. a bleed valve; 2. a branch pipe; 31. an elastic bladder; 311. a duct; 32. a conduit; 4. a liquid injection pipe; 51. an end head; 52. a first scissor arm; 53. a second scissor arm; 6. an aorta; 7. and a third seal.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1 and 2, in one embodiment of the present invention, there is provided a calcified aortic occlusion perfusion system comprising: the cannula comprises a cannula main body 1, a branch pipe 2, a plugging assembly, a liquid injection pipe 4 and a limiting piece 5. The branch pipe 2 is provided on the inner wall of the cannula body 1 in the same direction as the extension direction of the cannula body 1, and has a first opening 11 and a second opening 12 communicating with the outer wall of the cannula body 1. The plugging assembly comprises an elastic bag body 31 and a conduit 32, wherein the elastic bag body 31 is movably arranged in the branch pipe 2, the conduit 32 is communicated with the inner cavity of the elastic bag body 31, the elastic bag body 31 is provided with a pore canal 311, the pore canal 311 is parallel to the extending direction of the conduit 32, the conduit 32 extends to extend out of the first opening 11, and the elastic bag body 31 is suitable for being extended or retracted from the second opening 12 under the driving of the conduit 32. The liquid injection pipe 4 is fixedly arranged in the pore channel 311, one end of the liquid injection pipe extends to extend out of the first opening 11, and the other end of the liquid injection pipe faces the second opening 12. The stop comprises two movable semicircular ends 51, the two ends 51 being adapted to be mutually adjacent and to clamp the aorta 6 via respective intrados surfaces. The limiting piece is made of stainless steel.
In use, the cannula body 1 may be inserted into the aorta 6 with the orifice of the cannula body 1 and the second opening 12 in the lumen of the aorta 6, and the elastic capsule 31 in the branch tube 2 may be pushed through the catheter 32 and/or the infusion tube 4 until the elastic capsule 31 is fully positioned in the corresponding position in the lumen of the aorta 6. The inner cambered surfaces of the two semicircular ends 51 of the limiting piece are used for clamping the outer wall of the aorta 6 corresponding to the elastic bag body 31 in position so as to ensure that the outer wall of the aorta 6 cannot deform. Then, the elastic bag body 31 is filled with gas or liquid through the guide pipe 32 to enable the elastic bag body 31 to expand to be abutted against the inner wall of the aorta 6 so as to seal the aorta 6, and as the limiting piece limits the outer wall of the aorta, the expansion pressure of the elastic bag body is not required to be worried about to break the aorta, so that the safety is improved. And then, the heart stopping fluid can be poured into the aorta 6 through the fluid pouring tube 4, so that the operation of additionally performing a tube inserting operation on the aorta 6 is not needed, the number of wounds of the aorta 6 is reduced, and the help is provided for postoperative recovery.
Besides the elastic bag body 31 is driven to move by the guide pipe 32, the elastic bag body 31 can be driven to move by the liquid injection pipe 4 or the cooperation of the liquid injection pipe 4 and the guide pipe 32. The elastic capsule 31 may be made of medical rubber or medical silica gel. In addition, the cannula body 1 above the branch tube 2 can be temporarily blocked by the blocking forceps to prevent the blood from flowing out during the cannula operation, and the blocking forceps can be removed again when the extracorporeal circulation is started.
Referring to fig. 1 and 3, in one embodiment of the present invention, the stopper includes a first scissor arm 52 and a second scissor arm 53 hinged together, and the ends 51 of the first and second scissor arms 52 and 53 are semicircular in cross section. The ends 51 of the two scissor arms are identical in shape and of a certain size and can be brought close to each other and combined into a circle, thus adapting to the cross-sectional shape of the aorta 6 for limiting.
The ends of the first and second scissor arms 52 and 53 opposite the ends 51 are handles by which the two ends 51 can be manipulated toward or away from each other.
Referring to fig. 1 and 3, in one embodiment of the present invention, the tip 51 of the first scissor arm 52 and the tip 51 of the second scissor arm 53 are combined to form a circular ring or a tube. The tip 51 has a certain width dimension, and a direction parallel to the direction in which the aorta extends is defined as a width direction, and for example, the width of the tip 51 may be 2cm to 5cm, and the expansion of the aorta 6 due to the swelling of the elastic capsule 31 may be limited according to the actual situation.
Referring to fig. 1 and 3, in one embodiment of the present invention, the hole 311 is located at the center of the elastic balloon 31 and penetrates the proximal and distal ends of the elastic balloon 31. The end of the elastic capsule 31 near the operator is defined as the proximal end, and the other end is defined as the distal end, that is, the position of the hole channel 311 at the central axis of the elastic capsule 31, thereby ensuring that the outer wall of the liquid injection tube 4 positioned in the hole channel 311 is uniformly stressed. Meanwhile, the uniformity of the pressure in the inner cavity of the elastic bag body 31 can be guaranteed, so that all positions of the outer wall of the elastic bag body 31 along the circumferential direction can be close to the inner wall of the aorta 6, and the plugging effect is guaranteed.
Referring to fig. 1 and 4, in one embodiment of the present invention, the first opening 11 is provided with a first mounting block 111, and the first mounting block 111 has a first through hole through which the conduit 32 passes and a second through hole through which the filling pipe 4 passes. The first mounting block 111 is suitable for plugging the first opening 11, and is arc-shaped and is matched with the outer wall of the cannula main body 1, a first through hole and a second through hole are formed in the first mounting block 111 at intervals, and the catheter 32 and the liquid injection tube 4 can respectively move in the first through hole and the second through hole so as to ensure tightness.
Referring to fig. 1 and 4, in one embodiment of the invention, a first seal 13 is provided on the first opening and a second seal 14 is provided on the second opening, the first seal 13 and the second seal 14 being adapted to prevent liquid or gas in the manifold 2 from flowing out of the cannula body. The first sealing element 13 and the second sealing element 14 can be made of elastic materials, such as medical rubber, medical plastic or medical silica gel, the first sealing element 13 and the second sealing element 14 are in a truncated cone shape with through holes, the outer wall of the conduit 32 is tightly attached to the first sealing element 13, the outer wall of the liquid injection pipe 4 is tightly attached to the second sealing element 14, and therefore blood or gas in the branch pipe 2 can be prevented from flowing out of the first through holes or the second through holes, and tightness is guaranteed.
Referring to fig. 1 and 4, in one embodiment of the present invention, a third through hole is provided in the first mounting block 111, and a purge valve 15 is provided in the third through hole, the purge valve 15 being adapted to allow the gas in the branch pipe 2 to flow out of the cannula body 1. A small amount of gas may be present in the branch pipe 2, and the gas in the branch pipe 2 may be discharged through a gas release valve 15 in order to avoid gas flow into the aorta.
Referring to fig. 1, 5 and 6, in one embodiment of the present invention, a second mounting block 121 is disposed on the second opening 12, the second mounting block 121 is made of an elastic material, the second mounting block 121 has a first abutting surface 1211 and a second abutting surface 1212, the first abutting surface 1211 and the second abutting surface 1212 are turned over to the outside or the inside of the cannula body 1 under the action of external force, and the ends of the first abutting surface 1211 and the second abutting surface 1212 abut against each other under the action of the elastic force to form an upper circular through hole and a lower circular through hole, and sealing surfaces located on the upper side and the lower side of the circular through hole. After the elastic bag body stretches out of the cannula main body, the catheter and the liquid injection pipe are respectively positioned in the two circular through holes.
The second mounting block 121 is made of an elastic material, and can be shaped to be abutted against the ends of the first abutting surface 1211 and the second abutting surface 1212, and has two through holes spaced up and down and a sealing surface located up and down of the through holes, and external force can be provided by the elastic capsule 31, when the elastic capsule 31 enters or extends out of the second opening 12, the elastic capsule 31 pushes the first abutting surface 1211 and the second abutting surface 1212 to separate and fold towards the movement direction of the elastic capsule 31, so that a larger through hole is formed, and the elastic capsule 31 can conveniently enter or leave the branch pipe 2. After the elastic bag body 31 extends out of the second opening 12, the first butt joint surface 1211 and the second butt joint surface 1212 are restored to the butt joint state, the guide tube 32 and the liquid injection tube 4 are respectively positioned in the two through holes, and the respective outer walls are tightly attached to the two through holes, so that the sealing effect is achieved.
Referring to fig. 1 and 5, in one embodiment of the present invention, a second mounting block 121 is provided in the cannula body 1, and the outer wall of the second mounting block 121 is a cambered surface having the same shape as the outer wall of the cannula body 1. The outer wall of the second mounting block 121 is arc-shaped and can be smoothly connected with the outer wall of the cannula body 1. The second mounting block 121 does not hinder the insertion of the cannula body 1 when the cannula body 1 is inserted into the aorta 6.
Referring to fig. 1, in one embodiment of the invention, the cannula body 1 is provided with a third seal 7, the third seal 7 being adapted to seal off the connection of the aorta 6 with the cannula body 1. The third seal 7 may be annular and may be placed over the cannula body 1, the third seal 7 being adapted to seal off the connection of the aorta 6 to the cannula body 1 after the cannula body 1 has been inserted into place, to prevent blood flow.
According to a second aspect of the present invention, there is provided a calcified aortic occlusion perfusion method, applied to the calcified aortic occlusion perfusion system described above, comprising:
the cannula body is inserted into the aorta. The elastic bag body is pushed into the aorta through the catheter and the liquid injection pipe, and then the outer wall of the aorta corresponding to the elastic bag body is clamped through the two semicircular ends of the limiting piece. The elastic balloon may be advanced into the aorta through a catheter, an infusion tube, or both.
The elastic bag body is injected with gas or liquid through the catheter, and the elastic bag body is expanded to the inner wall of the aorta to be abutted. And pouring the cardiac arrest liquid through the liquid pouring pipe.
The method of this embodiment has been described above in connection with the description of a calcified aortic occlusion infusion system, and the specific procedure of the calcified aortic occlusion infusion method of this embodiment can be deduced by those skilled in the art with reference to the description above and will not be described in detail here.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (11)
1. A calcified aortic occlusion perfusion system, comprising:
a cannula body (1);
a branch pipe (2) which is arranged on the inner wall of the cannula main body (1) and has the same extending direction as the cannula main body (1), and is provided with a first opening (11) and a second opening (12) communicated with the outer wall of the cannula main body (1);
the plugging assembly comprises an elastic bag body (31) movably arranged in the branch pipe (2) and a conduit (32) communicated with the inner cavity of the elastic bag body (31), wherein the elastic bag body (31) is provided with a pore canal (311), the pore canal (311) is parallel to the extending direction of the conduit (32), the conduit (32) extends to extend out of the first opening (11), and the elastic bag body (31) is suitable for extending out of or retracting back from the second opening (12) under the driving of the conduit (32);
the liquid injection pipe (4) is fixedly arranged in the pore canal (311), one end of the liquid injection pipe extends to extend out of the first opening (11), and the other end of the liquid injection pipe faces the second opening (12);
the limiting piece comprises two movable semicircular ends (51), and the two ends (51) are suitable for approaching each other and clamping the aorta through respective intrados.
2. The calcified aortic occlusion perfusion system of claim 1, wherein the stop includes a first scissor arm (52) and a second scissor arm (53) hinged together, and the ends (51) of the first scissor arm (52) and the second scissor arm (53) are semi-circular in cross-section.
3. The calcified aortic occlusion perfusion system of claim 2, wherein the tip (51) of the first scissor arm (52) and the tip (51) of the second scissor arm (53) merge to form a ring shape or a round tube shape.
4. The calcified aortic occlusion perfusion system of claim 1, wherein the tunnel (311) is centered in the elastic balloon (31) and extends through both distal and proximal ends of the elastic balloon (31).
5. Calcified aortic occlusion perfusion system according to claim 1, characterized in that the first opening (11) is provided with a first mounting block (111), the first mounting block (111) having a first through hole and a second through hole, the catheter (32) passing through the first through hole, the filling tube (4) passing through the second through hole.
6. Calcified aortic occlusion perfusion system according to claim 5, characterized in that a first seal is provided on the first opening (11) and a second seal is provided on the second opening (12), the first and second seals being adapted to prevent the flow of liquid or gas in the branch tube (2) out of the cannula body.
7. Calcified aortic occlusion perfusion system according to claim 5, characterized in that a third through hole is provided in the first mounting block (111), a deflation valve (15) is provided in the third through hole, the deflation valve (15) being adapted to allow the gas in the branch tube (2) to flow out of the cannula body.
8. The calcified aortic occlusion perfusion system of claim 1, wherein a second mounting block (121) is disposed on the second opening (12), the second mounting block (121) is made of an elastic material, a first abutting surface and a second abutting surface are disposed on the second mounting block (121), the first abutting surface and the second abutting surface are turned over to the outside or the inside of the cannula body under the action of external force, the external force disappears, the first abutting surface and the second abutting surface abut against the lower end of the first abutting surface under the action of the elastic force to form an upper circular through hole and a lower circular through hole, and sealing surfaces are disposed on the upper side and the lower side of the circular through hole; after the elastic bag body (31) stretches out of the cannula main body, the guide pipe (32) and the liquid injection pipe (4) are respectively positioned in the two circular through holes.
9. The calcified aortic occlusion perfusion system of claim 8, wherein the second mounting block (121) is disposed within the cannula body, and the second mounting block (121) outer wall is a cambered surface having the same shape as the cannula body outer wall.
10. Calcified aortic occlusion infusion system according to claim 9, wherein a third seal (7) is provided on the cannula body, the third seal (7) being adapted to occlude the connection of the aorta with the cannula body (1).
11. A calcified aortic occlusion perfusion method applied to the calcified aortic occlusion perfusion system of any one of claims 1 to 10, the calcified aortic occlusion perfusion method comprising:
inserting the cannula body into the aorta;
pushing the elastic bag body into the aorta through the guide pipe and the liquid injection pipe, and then clamping the outer wall of the aorta corresponding to the elastic bag body through two semicircular ends of the limiting piece;
injecting gas or liquid into the elastic capsule through the catheter, and expanding the elastic capsule until the inner wall of the aorta is abutted;
and pouring cardiac arrest liquid through the liquid filling pipe.
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| CN202311061376.9A CN116784917A (en) | 2023-08-22 | 2023-08-22 | Calcified aortic occlusion perfusion systems and methods |
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| CN202311061376.9A CN116784917A (en) | 2023-08-22 | 2023-08-22 | Calcified aortic occlusion perfusion systems and methods |
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| US20090012350A1 (en) * | 2007-07-06 | 2009-01-08 | Claude Tihon | Partial cuff |
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| US20090012350A1 (en) * | 2007-07-06 | 2009-01-08 | Claude Tihon | Partial cuff |
| CN205460387U (en) * | 2016-03-09 | 2016-08-17 | 凌云飞 | A aorta tube inserting device for extracorporal circulatory system |
| CN207323596U (en) * | 2017-03-14 | 2018-05-08 | 重庆康华众联心血管病医院有限公司 | A kind of stent sacculus is put with luggage |
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