CN115252072B - Quick fixing and pouring device for liver in liver transplantation - Google Patents
Quick fixing and pouring device for liver in liver transplantation Download PDFInfo
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- CN115252072B CN115252072B CN202210675848.9A CN202210675848A CN115252072B CN 115252072 B CN115252072 B CN 115252072B CN 202210675848 A CN202210675848 A CN 202210675848A CN 115252072 B CN115252072 B CN 115252072B
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- 210000004185 liver Anatomy 0.000 title claims abstract description 83
- 238000002054 transplantation Methods 0.000 title claims abstract description 24
- 230000010412 perfusion Effects 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 43
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000008602 contraction Effects 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims description 22
- 230000037431 insertion Effects 0.000 claims description 22
- 238000001802 infusion Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 12
- 238000002627 tracheal intubation Methods 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000002792 vascular Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003978 infusion fluid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010057573 Chronic hepatic failure Diseases 0.000 description 1
- 208000010334 End Stage Liver Disease Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 208000011444 chronic liver failure Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/02—Preservation of living parts
- A01N1/0205—Chemical aspects
- A01N1/021—Preservation or perfusion media, liquids, solids or gases used in the preservation of cells, tissue, organs or bodily fluids
- A01N1/0226—Physiologically active agents, i.e. substances affecting physiological processes of cells and tissue to be preserved, e.g. anti-oxidants or nutrients
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/02—Preservation of living parts
- A01N1/0205—Chemical aspects
- A01N1/0231—Chemically defined matrices, e.g. alginate gels, for immobilising, holding or storing cells, tissue or organs for preservation purposes; Chemically altering or fixing cells, tissue or organs, e.g. by cross-linking, for preservation purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3498—Valves therefor, e.g. flapper valves, slide valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00969—Surgical instruments, devices or methods, e.g. tourniquets used for transplantation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B2017/348—Means for supporting the trocar against the body or retaining the trocar inside the body
- A61B2017/3482—Means for supporting the trocar against the body or retaining the trocar inside the body inside
- A61B2017/3484—Anchoring means, e.g. spreading-out umbrella-like structure
- A61B2017/3488—Fixation to inner organ or inner body tissue
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Biophysics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
The invention provides a rapid liver fixing and pouring device in liver transplantation, belonging to the technical field of medical appliances; the novel cannula comprises a cannula, an annular groove is formed in the outer side of the cannula, a plurality of communication holes are formed in the outer side of the cannula in an annular array mode, and a first guide part, a second guide part, a first limiting part, a second limiting part, a third limiting part and a fourth limiting part are arranged on the cannula. According to the invention, the contraction bag is arranged, the perfusion liquid entering the intubation tube enables the contraction bag to expand outwards, so that the fixation of the intubation tube and the inner wall of the blood vessel is completed, the fixation effect is stable, the movable clamping table and the fixed clamping table are separated by pressing the fourth sliding rod, so that the surface of the liver only remains the fixed clamping table, the interference of the perfusion tube on medical staff in the transplanting process is avoided, the damage to the blood vessel can not be enlarged when the medical staff dismantles the device by pressing the fifth sliding rod, and the safety of the operation is further ensured.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a rapid liver fixing and perfusion device in liver transplantation.
Background
At present, liver transplantation has become a conventional treatment means for treating end-stage liver diseases, and the survival rate after liver transplantation is continuously improved along with continuous popularization and improvement of liver transplantation technology in China in the present year. The incidence of postoperative complications also decreases year by year. In liver transplantation, one of the key technologies in the acquisition of liver is liver perfusion.
For example, a rapid fixation and perfusion device for liver in liver transplantation disclosed in China patent publication No. CN104770361B comprises a puncture guiding device and a connecting ring connected with a perfusion tube, wherein the puncture guiding device is a puncture steel wire with a contractible ring at the top end, and the contractible ring is magnetic; the top end of the connecting ring is conical, the bottom of the connecting ring is connected with the pouring tube, a unidirectional flowing valve is arranged in the bottom of the connecting ring, the top of the connecting ring is made of iron-containing materials, and the top of the connecting ring is mutually matched with the contractible ring and is mutually adsorbed through magnetism. The invention has simple and feasible operation and strong pertinence, and is mainly used for rapid perfusion when liver acquisition is completed in liver transplantation. The invention provides effective technical support for rapid and efficient liver perfusion and high-quality liver supply.
The device can be used for completing quick fixation of the perfusion tube and backflow prevention in the perfusion process, however, in the actual use process, the perfusion tube which extends to the outside of a patient and is fixedly connected with a blood vessel of the patient can increase interference to medical staff in the operation process of transplanting the liver by medical staff, the liver is required to be stably connected with the perfusion tube all the time in the moving process, when the liver is prevented from moving, the perfusion tube is pulled to the liver, so that the liver is damaged, the movement of the whole liver is inconvenient, the operation efficiency of the medical staff is reduced, meanwhile, the perfusion tube fixed in the blood vessel in the mode is extremely difficult to take out due to the instability of magnetic connection, and the contractile ring is always in an expanded state under the action of the connecting ring in the taking out process, so that the difficulty of taking out of the device and the damage to the blood vessel of the patient are increased, the risk of operation is increased, and the operation efficiency is further reduced.
Disclosure of Invention
The invention aims to solve the technical problems that the prior perfusion tube which extends to the outside of a patient and is fixedly connected with a blood vessel of the patient can be increased to interfere with the medical staff in the operation process of transplanting the liver by the medical staff, the liver is required to be stably connected with the perfusion tube all the time in the moving process, the liver is prevented from being damaged by the perfusion tube when moving, the whole liver is inconvenient to move, the operation efficiency of the medical staff is reduced, meanwhile, the perfusion tube fixed in the blood vessel in the mode is extremely difficult to take out due to the instability of magnetic connection, and the perfusion tube is always in an expanded state under the action of a connecting ring in the taking out process, so that the difficulty of taking out the device and the damage to the blood vessel of the patient are increased, and the risk of operation is increased.
In order to solve the technical problems, the invention provides the following technical scheme:
The quick liver fixing and pouring device comprises a cannula, wherein an annular groove is formed in the outer side of the cannula, a plurality of communication holes are formed in the outer side of the cannula in an annular array, a baffle is fixedly installed in the cannula, the plurality of communication holes are all located at the top of the baffle, the cannula is a hard metal tube, and a first guide part, a second guide part, a first limiting part, a second limiting part, a third limiting part and a fourth limiting part are installed on the cannula; the first guide component is used for puncturing a blood vessel, the first guide component and the second guide component are used for limiting the perfusate in the cannula to flow unidirectionally, the first limiting component is used for fixing the cannula in the blood vessel, the second limiting component is used for limiting the second guide component, the second guide component in a vacuum state is prevented from moving before being fixed with the blood vessel, the vacuum environment in the cannula is kept, the third limiting component is used for releasing the limit of the second limiting component on the first limiting component, the vacuum environment in the cannula is released, the perfusate can enter the cannula, and the fourth limiting component is used for limiting the second guide component so as to release the limit of the second guide component on the perfusate in the cannula to flow unidirectionally.
Preferably, the first guiding component comprises a needle head fixedly installed at one end of the insertion tube, a plurality of liquid outlets are formed in the outer side of the needle head in an annular array, a first through hole is formed in the top of the needle head, a first cavity is formed in the needle head, a first ball body is placed in the first cavity, the first through hole and the liquid outlets are communicated, and the diameter of the first ball body is larger than that of the first through hole.
Preferably, the second guiding component comprises a fixed clamping table fixedly mounted at the other end of the insertion pipe, a second cavity is formed in the fixed clamping table, a plurality of limiting rods are fixedly mounted on the inner side of the second cavity in an annular array, the bottom ends of the limiting rods are fixedly connected with the same supporting ring, a second through hole is formed in the top of the fixed clamping table, a second sphere is placed in the second cavity, the diameter of the second sphere is larger than that of the second through hole, the second cavity is communicated with the second through hole, and two horizontal limiting holes are symmetrically formed in the outer side of the second sphere with respect to the axis of the fixed clamping table.
Preferably, the first limiting component comprises a shrinkage bag fixedly installed in the annular groove, a plurality of fixing rings are fixedly installed on the inner side of the shrinkage bag in an annular array, connecting rings are sleeved on the fixing rings, a plurality of movable columns are sleeved on the outer side of the insertion tube in a sliding mode in an annular array, the movable columns penetrate through and extend into the insertion tube, one ends, far away from each other, of the movable columns are fixedly connected with the connecting rings, limiting rings are fixedly sleeved on the outer sides of the movable columns, and liquid outlet cavities are formed in the movable columns.
Preferably, the second limiting component comprises two third cavities arranged in the fixing clamping table, the two third cavities are symmetrical with respect to the axis of the insertion tube, the two third cavities are internally sheathed with a first sliding ring in a sliding manner, the first sliding ring is a waist-shaped ring, one end of the first sliding ring is fixedly provided with a first sliding rod which is sheathed with the third cavity in a sliding manner, the first sliding rod penetrates through and extends into the second cavity, the first sliding rod is inserted into the horizontal limiting hole, a first fixing shaft is sheathed in the first sliding ring in a sliding manner, a second sliding rod is sheathed in the outer side of the first fixing shaft in a fixed manner, one side of the first sliding ring is provided with a first through groove, the second sliding rod is positioned in the first through groove, the bottom of the third cavity is fixedly provided with a first spring, and the top end of the first spring is fixedly connected with the second sliding rod.
Preferably, two clamping holes are symmetrically formed at the top of the fixed clamping table about the axis of the fixed clamping table, the two clamping holes penetrate through and extend to the third cavity, and the second sliding rod is in sliding sleeve connection with the clamping holes.
Preferably, the third limiting component comprises a movable clamping table sleeved in the fixed clamping table, two fourth cavities are formed in the movable clamping table, the two fourth cavities are symmetrical with respect to the axis of the movable clamping table, a second sliding ring is fixedly sleeved in the fourth cavities in a sliding manner, a third sliding rod sleeved in the fourth cavities in a sliding manner is fixedly arranged at one end of the second sliding ring, the second sliding ring is a waist-shaped ring, a second fixed shaft is sleeved in the second sliding ring in a sliding manner, a fourth sliding rod penetrating through and extending out of the movable clamping table is fixedly sleeved on the second fixed shaft, a second through groove is formed in the outer side of the second sliding ring, the fourth sliding rod is located in the second through groove, a second spring is fixedly arranged on one side of the fourth cavity, and one end of the second spring is fixedly connected with the fourth sliding rod.
Preferably, the fixing clamping table is provided with two clamping grooves which are symmetrical about the center of the axis of the fixing clamping table, and the fourth sliding rod is positioned in the clamping grooves.
Preferably, the fourth limiting component comprises a fifth sliding rod which is in sliding sleeve connection with one side of the fixed clamping table, the fifth sliding rod penetrates through and extends to the fifth sliding rod in the second cavity, and a limiting disc is fixedly arranged at one end of the fifth sliding rod in the second cavity.
Preferably, a liquid injection hole is formed in the movable clamping table, a perfusion tube is fixedly sleeved in the liquid injection hole, and one end of the perfusion tube is fixedly connected with the liver perfusion machine.
Compared with the prior art, the invention has at least the following beneficial effects:
In the scheme, through setting up the shrink bag, under the elasticity effect of second spring, the third slide rod of inserting in the joint hole can contradict and extrude the second slide rod and make its downward movement with the second slide rod, the second slide rod of downward movement drives first fixed axle motion, the first fixed axle of motion drives first slide rod along the horizontal direction motion through first sliding ring under the restriction of fourth cavity, two first slide rods keep away from each other this moment, and remove with the spheroidal grafting relation of second, under the effect of intubate negative pressure, the second spheroid moves down and contradicts with the gag lever post, start the liver perfusion machine again, the perfusate in the perfusion tube passes through the second cavity in the fixed ka tai this moment, in the clearance entering intubate between gag lever post and the second spheroid, the perfusate that gets into in the intubate passes through the intercommunicating pore and in the shrink bag, and make shrink bag outwards expand, and then accomplish intubate and the fixed of blood vessel inner wall, be simple swift, need not manual operation, and fixed effect is stable.
Through setting up the fourth slide bar, when the liver is accomplished to be perfused and is needed to transplant, stop the continuation of perfusion machine and pour into, extrude both sides fourth slide bar, the fourth slide bar makes the upward movement of third slide bar through the second fixed axle, the second sliding ring, and break away from the grafting with the joint hole, afterwards rotate the fourth slide bar, after until one side of fourth slide bar and draw-in groove is contradicted, slide the fourth slide bar and make fourth slide bar break away from with the draw-in groove, can make the fourth slide bar drive movable clamping table and fixed clamping table separation through this operation, make the liver surface keep fixed clamping table only, and under the hydraulic pressure effect of the perfusate in the intubate second spheroid and the conflict of second through hole, avoid the perfusate outflow in the intubate, can transplant fast this moment, avoid the interference that the perfusion tube led to the fact medical personnel in the transplantation process, the surgical efficiency has been improved, the transplanting degree of difficulty has been reduced, and the security of operation has been further improved.
Through setting up the fifth slide bar, when the completion is got rid of the intubate to the patient when external, press the fifth slide bar, the fifth slide bar drives the limiting disc and removes and contradict the second spheroid to the inner wall of second cavity, the perfusate in the intubate is taken out through the liver infusion machine this moment, under the cooperation of first spheroid and syringe needle, the intraductal liquid of blood vessel can not get into in the intubate, the liquid of baffle bottom gets into shrink bag through the play liquid chamber, the perfusate in the shrink bag gets into the intubate through the intercommunicating pore again, and because the second spheroid is contradicted by the limiting disc, perfusate accessible second through-hole, annotate the liquid hole, the perfusion tube flows back to the infusion machine, because lose the hydraulic support of perfusate, shrink bag shrink and release with the vascular fixed, at this moment, can take out intubate and syringe needle through holding the fixed clamping table, through last structural design, the dismantlement efficiency of this device has been improved, and medical personnel's operating efficiency has been further improved, can not enlarge the damage to the blood vessel when dismantling simultaneously, further guarantee the security of operation.
Through setting up first spheroid and making the perfusate that gets into in the intubate only can one-way inflow vascular, when the intraductal liquid of blood to the syringe needle in flow, the first spheroid motion that receives hydraulic pressure influence is contradicted with first through-hole, and then makes the top of first cavity seal to make the liquid that gets into in the syringe needle through the liquid outlet by the shutoff in the syringe needle, avoid stopping when filling, the liquid backward flow in the liver, guarantee the security of filling efficiency and operation.
Through setting up the shrink bag, because of the perfusate in the intubate does not run off, under the hydraulic effect of perfusate, the shrink bag keeps the inflation state to last stable fixing in the blood vessel, so that medical personnel installs movable cassette again and perfuses the liver through the perfusion tube, further improved medical personnel's operation efficiency.
Through setting up the spacing ring, the shrink bag of inflation drives the movable column through solid fixed ring, go out the one side motion of pipe axle center to keeping away from, until the one end in liquid chamber is located the shrink bag, at this moment, the perfusate in the shrink bag gets into the intubate through liquid chamber, and extrude first spheroid, later get into in the blood vessel through the liquid outlet on the needle, and keep pouring into in the liver, can carry out spacingly through setting up the movable column that the spacing ring can move simultaneously, avoid all getting into the shrink bag in the both ends in liquid chamber, keep the spacing stability of shrink bag.
Drawings
The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.
FIG. 1 is a schematic perspective view of a rapid liver fixation perfusion device in liver transplantation;
FIG. 2 is a schematic view of a partially sectioned perspective view of a rapid liver-fixing perfusion device in liver transplantation;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;
FIG. 4 is a schematic view of the partial enlarged structure of FIG. 2;
FIG. 5 is a schematic view of a cut-away, perspective, enlarged structure of the cannula and the first stop member after assembly;
FIG. 6 is a schematic view of a partial enlarged structure of FIG. 5;
fig. 7 is a partially cut-away enlarged perspective view of the assembled fixing clip and fourth spacing member.
[ Reference numerals ]
1. A cannula; 2. a needle; 3. a first sphere; 4. a communication hole; 5. a baffle; 6. a constrictor bladder; 7. a fixing ring; 8. a connecting ring; 9. a movable column; 10. a limiting ring; 11. a liquid outlet cavity; 12. a fixing clamping table; 13. a first slip ring; 14. a first slide rod; 15. a first fixed shaft; 16. a second slide rod; 17. a first spring; 18. a limit rod; 19. a second sphere; 20. a movable clamping table; 21. a second slip ring; 22. a second fixed shaft; 23. a third slide rod; 24. a fourth slide rod; 25. a second spring; 26. a clamping hole; 27. a clamping groove; 28. a fifth slide rod; 29. a limiting disc; 30. and (5) pouring a tube.
While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the invention, this is for illustrative purposes only and is not intended to limit the invention to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.
Detailed Description
The following describes in detail a perfusion device for rapid fixation of liver in liver transplantation according to the present invention with reference to the accompanying drawings and specific examples. While the invention has been described herein in terms of the preferred and preferred embodiments, the following embodiments are intended to be more illustrative, and may be implemented in many alternative ways as will occur to those of skill in the art; and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the invention specifically.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Generally, the terminology may be understood, at least in part, from the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead, depending at least in part on the context, allow for other factors that are not necessarily explicitly described.
As used herein, the term "nominal" refers to a desired or target value for a characteristic or parameter of a component or process operation, and a range of values above and/or below the desired value, that is set during a design phase of a production or manufacturing process. The range of values may be due to slight variations in manufacturing processes or tolerances. As used herein, the term "about" indicates a given amount of value that may vary based on the particular technology node associated with the subject semiconductor device. Based on a particular technology node, the term "about" may indicate a given amount of a value that varies, for example, within 5% -15% of the value (e.g., ±5%, ±10% or±15%).
It will be understood that the meanings of "on … …", "on … …" and "over … …" in this disclosure should be interpreted in the broadest sense so that "on … …" means not only "directly on" something but also includes the meaning of "on" something with intervening features or layers therebetween, and "on … …" or "over … …" means not only "on" or "over" something, but also may include its meaning of "on" or "over" something without intervening features or layers therebetween.
Furthermore, spatially relative terms such as "under …," "under …," "lower," "above …," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein may similarly be interpreted accordingly.
As shown in fig. 2 and fig. 4, an embodiment of the present invention provides a rapid fixation and perfusion device for liver in liver transplantation, which comprises a cannula 1, wherein an annular groove is formed on the outer side of the cannula 1, a plurality of communication holes 4 are formed on the outer side of the cannula 1 in an annular array, a baffle 5 is fixedly installed in the cannula 1, the plurality of communication holes 4 are all positioned at the top of the baffle 5, the cannula 1 is a hard metal tube, and a first guide component, a second guide component, a first limit component, a second limit component, a third limit component and a fourth limit component are installed on the cannula 1; the first guide part is used for puncturing a blood vessel, the first guide part and the second guide part are used for limiting the perfusate in the cannula 1 to flow unidirectionally, the first limiting part is used for fixing the cannula 1 in the blood vessel, the second limiting part is used for limiting the second guide part, the second guide part in a vacuum state is prevented from moving before being fixed with the blood vessel, the vacuum environment in the cannula 1 is kept, the third limiting part is used for releasing the limiting of the second limiting part on the first limiting part, the vacuum environment in the cannula 1 is released, the perfusate can enter the cannula 1, and the fourth limiting part is used for limiting the second guide part so as to release the limiting of the second guide part on the perfusate unidirectional flow in the cannula 1.
As shown in fig. 1-6, in this embodiment, the first guiding component includes a needle 2 fixedly installed at one end of a cannula 1, a plurality of liquid outlets are formed on the outer side of the needle 2 in a ring array, a first through hole is formed at the top of the needle 2, a first cavity is formed in the needle 2, a first ball 3 is placed in the first cavity, the first through hole and the liquid outlets are communicated, and the diameter of the first ball 3 is larger than that in the first through hole, so that the first ball 3 is prevented from being separated from the first cavity; the second guide part comprises a fixed clamping table 12 fixedly arranged at the other end of the insertion tube 1, a second cavity is formed in the fixed clamping table 12, a plurality of limiting rods 18 are fixedly arranged on the inner side of the second cavity in an annular array, the bottom ends of the limiting rods 18 are fixedly connected with the same supporting ring, a second through hole is formed in the top of the fixed clamping table 12, a second sphere 19 is placed in the second cavity, the diameter of the second sphere 19 is larger than that of the second through hole, the second sphere 19 is prevented from being separated from the second cavity, the second cavity is communicated with the second through hole, and two horizontal limiting holes are symmetrically formed in the outer side of the second sphere 19 relative to the axis of the fixed clamping table 12; the first limiting component comprises a shrinkage bag 6 fixedly installed in an annular groove, a plurality of protrusions are arranged on the outer side of the shrinkage bag 6 in an annular array mode, the friction force of the outer surface of the shrinkage bag 6 can be increased, the fixing stability of the shrinkage bag 6 is further improved, a plurality of fixing rings 7 are fixedly installed on the inner side of the shrinkage bag 6 in an annular array mode, connecting rings 8 are sleeved on the fixing rings 7 in a sleeved mode, a plurality of movable columns 9 are sleeved on the outer side of the insertion tube 1 in a sliding mode in an annular array mode, the movable columns 9 penetrate through and extend into the insertion tube 1, vacuum is formed in the insertion tube 1, one ends, away from each other, of the movable columns 9 are fixedly connected with the connecting rings 8, limiting rings 10 are fixedly sleeved on the outer sides of the movable columns 9, and liquid outlet cavities 11 are formed in the movable columns 9.
When the cannula 1 is required to be fixed in a blood vessel of a patient, a medical staff can pinch the fixing clamping table 12, the needle point part of the needle head 2 is inserted into the blood vessel after aligning with the perfusion point, when the shrinkage bag 6 on the cannula 1 is completely immersed in the blood vessel, the third limiting part and the second limiting part are fixed, and perfusion liquid can not form an air lock when entering the blood vessel of the patient through the fixing clamping table 12, the cannula 1, the shrinkage bag 6, the liquid outlet cavity 11 and the needle head 2 through the vacuum environment in the cannula 1, so that the operation safety of the patient is ensured.
As shown in fig. 1-3, in this embodiment, the second limiting component includes two third cavities formed in the fixing clamping platform 12, the two third cavities are symmetrical about the axis of the insertion tube 1, the two third cavities are both in sliding connection with a first sliding ring 13, the first sliding ring 13 is a waist-shaped ring, a first sliding rod 14 in sliding connection with the third cavity is fixedly mounted at one end of the first sliding ring 13, the first sliding rod 14 penetrates through and extends into the second cavity, the first sliding rod 14 is inserted into the horizontal limiting hole, a first fixed shaft 15 is in sliding connection with the first sliding ring 13, a second sliding rod 16 is fixedly connected with the outer side of the first fixed shaft 15, a first through groove is formed in one side of the first sliding ring 13, the second sliding rod 16 is located in the first through groove, a first spring 17 is fixedly mounted at the bottom of the third cavity, and the top end of the first spring 17 is fixedly connected with the second sliding rod 16; two clamping holes 26 are symmetrically formed in the top of the fixed clamping table 12 around the axis of the fixed clamping table 12, the two clamping holes 26 penetrate through and extend to the third cavity, and the second sliding rod 16 is in sliding sleeve joint with the clamping holes 26; the third limiting component comprises a movable clamping table 20 sleeved in the fixed clamping table 12, two fourth cavities are formed in the movable clamping table 20, the two fourth cavities are symmetrical with respect to the axis of the movable clamping table 20, a second sliding ring 21 is slidably sleeved in the two fourth cavities, a third sliding rod 23 which is slidably sleeved with the fourth cavities is fixedly arranged at one end of the second sliding ring 21, the second sliding ring 21 is a waist-shaped ring, a second fixed shaft 22 is slidably sleeved in the second sliding ring 21, a fourth sliding rod 24 which penetrates through and extends out of the movable clamping table 20 is fixedly sleeved on the second fixed shaft 22, a second through groove is formed in the outer side of the second sliding ring 21, the fourth sliding rod 24 is located in the second through groove, a second spring 25 is fixedly arranged at one side of the fourth cavity, one end of the second spring 25 is fixedly connected with the fourth sliding rod 24, a liquid injection hole is fixedly sleeved in the liquid injection hole, one end of the liquid injection pipe 30 is fixedly connected with a liver perfusion machine, two clamping grooves 27 which are symmetrical with respect to the axis center of the fixed clamping table 12 are formed in the fixed clamping table 12.
When the contraction bag 6 is completely immersed into a blood vessel of a patient, the liver perfusion machine is started to input perfusion liquid into the perfusion tube 30 until liquid drops drop from a liquid outlet of the perfusion tube 30, at the moment, the fourth sliding rods 24 are aligned with notches of the clamping grooves 27, the movable clamping table 20 is sleeved in the fixed clamping table 12, when the bottom of the movable clamping table 20 is contacted with the top of the fixed clamping table 12, the third sliding rods 23 are abutted to move upwards and drive the second sliding rings 21 to move, the second sliding rings 21 drive the fourth sliding rods 24 to move horizontally under the limit of the third cavities through the second fixing shafts 22, and squeeze the second springs 25, then the movable clamping table 20 is rotated by taking the fourth sliding rods 24 as a force point until the two third sliding rods 23 are coaxial with the clamping holes 26, at the moment, under the elastic action of the second springs 25, the two fourth sliding rods 24 are mutually separated along the horizontal direction, and drive the second sliding rings 21 to move vertically downwards under the limit of the third cavities through the second fixing shafts 22 until the third sliding rings 23 are inserted into the clamping holes 26, the second sliding rings 16 are pressed, the movable clamping table 20 is installed with the fixed clamping table 12, and the safety of the fixed clamping table is further improved, the installation difficulty of the perfusion device is further improved, and the installation of the perfusion device is realized, and the perfusion device is easy, and the installation difficulty of the perfusion device is stable, and the installation is easy, and the installation is stable, and the installation and the device is easy and the stable.
Under the action of the elastic force of the second spring 25, the third sliding rod 23 inserted into the clamping hole 26 is abutted against the second sliding rod 16 and extrudes the second sliding rod 16 to enable the second sliding rod 16 to move downwards, the second sliding rod 16 moving downwards drives the first fixed shaft 15 to move, the moving first fixed shaft 15 drives the first sliding rod 14 to move along the horizontal direction through the first sliding ring 13 under the limit of the fourth cavity, at the moment, the two first sliding rods 14 are away from each other and are released from the inserting connection with the second ball 19, under the action of negative pressure in the cannula 1, the second ball 19 moves downwards and is abutted against the limiting rod 18, the liver perfusion machine is started again, at the moment, perfusate in the perfusion tube 30 enters the cannula 1 through the second cavity in the fixing clamping table 12 through the gap between the limiting rod 18 and the second ball 19, and the perfusate entering the cavity between the cannula 1 and the shrinkage bag 6 through the communication hole 4, and the shrinkage bag 6 is enabled to expand outwards, and the fixation of the cannula 1 and the inner wall of a blood vessel is completed, the fixation effect is simple and rapid, and the fixation effect is stable.
The expanded shrinkage bag 6 drives the movable column 9 to move to one side far away from the axis of the insertion tube 1 through the fixed ring 7 and the connecting ring 8 until one end of the liquid outlet cavity 11 is positioned in the shrinkage bag 6, at the moment, perfusate in the shrinkage bag 6 enters the insertion tube 1 through the liquid outlet cavity 11 and extrudes the first ball body 3, then enters a blood vessel through a liquid outlet on the needle head 2 and continuously fills the liver, and meanwhile, the movable column 9 which moves can be limited through the limiting ring 10, two ends of the liquid outlet cavity 11 are prevented from entering the shrinkage bag 6, and the limiting stability of the shrinkage bag 6 is maintained.
Through setting up first spheroid 3 so that the perfusate that gets into in the intubate 1 can only one-way inflow vascular, when the intraductal liquid of blood flows in to syringe needle 2, the first spheroid 3 motion that receives hydraulic pressure influence is contradicted with first through-hole, and then makes the top of first cavity seal to make the liquid that gets into in the syringe needle 2 through the liquid outlet by the shutoff in syringe needle 2, avoid stopping when filling, the liquid backward flow in the liver, guarantee the security of filling efficiency and operation.
When the liver is filled and needs to be transplanted, the continuous filling of the filling machine is stopped, the fourth slide rods 24 on two sides are extruded, the fourth slide rods 24 enable the third slide rod 23 to move upwards through the second fixed shaft 22 and the second sliding ring 21 and to be separated from the clamping holes 26, then the fourth slide rods 24 are rotated until the fourth slide rods 24 are in contact with one sides of the clamping grooves 27, the fourth slide rods 24 are slid to enable the fourth slide rods 24 to be separated from the clamping grooves 27, the movable clamping table 20 and the fixed clamping table 12 can be driven by the fourth slide rods 24 to be separated through the operation, only the fixed clamping table 12 is reserved on the surface of the liver, the second sphere 19 is in contact with the second through holes under the hydraulic action of the perfusate in the cannula 1, the perfusate in the cannula 1 is prevented from flowing outwards, the liver can be transplanted rapidly at the moment, the interference of the perfusate tube 30 to medical staff in the transplanting process is avoided, the operation efficiency is improved, the transplanting difficulty is reduced, and the safety of an operation is further improved.
Meanwhile, because the perfusate in the cannula 1 is not lost, under the action of the perfusate hydraulic pressure, the contraction bag 6 keeps an expanded state and is continuously and stably fixed in the blood vessel, so that medical staff can conveniently install the movable clamping table 20 again and perfuse the liver through the perfusion tube 30, and the operation efficiency of the medical staff is further improved.
As shown in fig. 7, in this embodiment, the fourth limiting component includes a fifth sliding rod 28 slidably sleeved on one side of the fixing clamping table 12, the fifth sliding rod 28 penetrates through and extends to the fifth sliding rod 28 in the second cavity, and a limiting disc 29 is fixedly mounted at one end of the fifth sliding rod 28 in the second cavity.
When the infusion to the liver is completed, when the cannula 1 needs to be removed to the outside of the patient, the fifth sliding rod 28 is pressed, the fifth sliding rod 28 drives the limiting disc 29 to move and props the second sphere 19 against the inner wall of the second cavity, at the moment, the infusion liquid in the cannula 1 is extracted through the liver infusion machine, under the cooperation of the first sphere 3 and the needle head 2, the liquid in the blood vessel can not enter the cannula 1, the liquid at the bottom of the baffle 5 enters the shrinkage bag 6 through the liquid outlet cavity 11, the infusion liquid entering the shrinkage bag 6 enters the cannula 1 again through the communication hole 4, and because the second sphere 19 is propped against by the limiting disc 29, the infusion liquid in the cannula 1 can flow back to the infusion machine through the second through hole, the infusion hole and the infusion tube 30, the shrinkage bag 6 is contracted and the fixation with the blood vessel is released, at the moment, the cannula 1 and the needle head 2 can be taken out through the pinching fixing clamping table 12, the disassembly efficiency of the device is improved through the upper structural design, the operation efficiency of medical staff is further improved, the damage to the blood vessel can not be enlarged during the disassembly, and the safety of the operation is further ensured.
According to the technical scheme provided by the invention, through arranging the needle head, when the cannula needs to be fixed in a blood vessel of a patient, a medical staff can pinch the fixing clamping table, the needle point part of the needle head is aligned with the perfusion point and then is inserted into the blood vessel, when the contraction bag on the cannula is completely immersed in the blood vessel, the third limiting part and the second limiting part are fixed, and through the vacuum environment in the cannula, perfusion liquid can not form an air lock when entering the blood vessel of the patient through the fixing clamping table, the cannula and the needle head, so that the operation safety of the patient is ensured.
Through setting up the third slide bar, when the shrink bag is submerged into patient's blood vessel completely, start the liver infusion machine earlier and input the perfusion fluid into the perfusion tube, until there is the liquid drop to drip from the liquid outlet of perfusion tube, this moment aligns the breach department of fourth slide bar and draw-in groove, and with movable clamping table cover in fixed clamping table, when the bottom of movable clamping table and the top of fixed clamping table contact, the third slide bar receives the conflict upward movement and drives the motion of second sliding ring, the second sliding ring passes through the restriction of second fixed axle drive fourth slide bar in the third cavity and horizontal migration, and extrude the second spring, later use the fourth slide bar as the impetus to rotate movable clamping table, until two third slide bars and joint hole concentric, at this moment, under the elasticity effect of second spring, two fourth slide bars are kept away from each other along the horizontal direction, and drive the second sliding ring and insert the card downthehole and extrude the second slide bar under the restriction of third cavity, accomplish spacing and the fixed of movable clamping table this moment, this moment's structure has reduced the limit and fixed with movable clamping table, the installation efficiency has been accomplished simultaneously, the safety and stability has been improved, the installation device has been accomplished to the safety and has been guaranteed.
Through setting up the shrink bag, under the elasticity effect of second spring, insert the third slide rod in the joint hole and can contradict and extrude the second slide rod and make its downward movement with the second slide rod, the second slide rod of downward movement drives first fixed axle motion, the first fixed axle of motion drives first slide rod along the horizontal direction motion through first sliding ring under the restriction of fourth cavity, two first slide rods keep away from each other this moment, and remove with the spheroidal grafting relation of second, under the effect of intubate negative pressure, the second spheroid moves down and contradicts with the gag lever post, start liver perfusion machine again, perfusate in the perfusion tube passes through the second cavity in the fixed block at this moment, in the clearance entering intubate between gag lever post and the second spheroid, perfusate in the entering intubate passes through the cavity between intubate and the shrink bag, and make shrink bag outwards expand, and then accomplish the fixed of intubate and blood vessel inner wall, and is simple swift, need not manual operation, and fixed effect is stable.
Through setting up the spacing ring, the shrink bag of inflation drives the movable column through solid fixed ring, go out the one side motion of pipe axle center to keeping away from, until the one end in liquid chamber is located the shrink bag, at this moment, the perfusate in the shrink bag gets into the intubate through liquid chamber, and extrude first spheroid, later get into in the blood vessel through the liquid outlet on the needle, and keep pouring into in the liver, can carry out spacingly through setting up the movable column that the spacing ring can move simultaneously, avoid all getting into the shrink bag in the both ends in liquid chamber, keep the spacing stability of shrink bag.
Through setting up first spheroid and making the perfusate that gets into in the intubate only can one-way inflow vascular, when the intraductal liquid of blood to the syringe needle in flow, the first spheroid motion that receives hydraulic pressure influence is contradicted with first through-hole, and then makes the top of first cavity seal to make the liquid that gets into in the syringe needle through the liquid outlet by the shutoff in the syringe needle, avoid stopping when filling, the liquid backward flow in the liver, guarantee the security of filling efficiency and operation.
Through setting up the fourth slide bar, when the liver is accomplished to be perfused and is needed to transplant, stop the continuation of perfusion machine and pour into, extrude both sides fourth slide bar, the fourth slide bar makes the upward movement of third slide bar through the second fixed axle, the second sliding ring, and break away from the grafting with the joint hole, afterwards rotate the fourth slide bar, after until one side of fourth slide bar and draw-in groove is contradicted, slide the fourth slide bar and make fourth slide bar break away from with the draw-in groove, can make the fourth slide bar drive movable clamping table and fixed clamping table separation through this operation, make the liver surface keep fixed clamping table only, and under the hydraulic pressure effect of the perfusate in the intubate second spheroid and the conflict of second through hole, avoid the perfusate outflow in the intubate, can transplant fast this moment, avoid the interference that the perfusion tube led to the fact medical personnel in the transplantation process, the surgical efficiency has been improved, the transplanting degree of difficulty has been reduced, and the security of operation has been further improved.
Through setting up the shrink bag, because of the perfusate in the intubate does not run off, under the hydraulic effect of perfusate, the shrink bag keeps the inflation state to last stable fixing in the blood vessel, so that medical personnel installs movable cassette again and perfuses the liver through the perfusion tube, further improved medical personnel's operation efficiency.
Through setting up the fifth slide bar, when the completion is got rid of the intubate to the patient when external, press the fifth slide bar, the fifth slide bar drives the limiting disc and removes and contradict the second spheroid to the inner wall of second cavity, the perfusate in the intubate is taken out through the liver infusion machine this moment, under the cooperation of first spheroid and syringe needle, the intraductal liquid of blood vessel can not get into in the intubate, the liquid of baffle bottom gets into shrink bag through the play liquid chamber, the perfusate in the shrink bag gets into the intubate through the intercommunicating pore again, and because the second spheroid is contradicted by the limiting disc, perfusate accessible second through-hole, annotate the liquid hole, the perfusion tube flows back to the infusion machine, because lose the hydraulic support of perfusate, shrink bag shrink and release with the vascular fixed, at this moment, can take out intubate and syringe needle through holding the fixed clamping table, through last structural design, the dismantlement efficiency of this device has been improved, and medical personnel's operating efficiency has been further improved, can not enlarge the damage to the blood vessel when dismantling simultaneously, further guarantee the security of operation.
The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the following description of preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will be fully understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present invention.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in implementing the methods of the embodiments described above may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium, such as: ROM/RAM, magnetic disks, optical disks, etc.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A rapid fixation and perfusion device for liver in liver transplantation, comprising:
The device comprises an insertion pipe, wherein an annular groove is formed in the outer side of the insertion pipe, a plurality of communication holes are formed in the outer side of the insertion pipe in an annular array, a baffle is fixedly installed in the insertion pipe, a plurality of communication holes are formed in the top of the baffle, the insertion pipe is a hard metal pipe, and a first guide part, a second guide part, a first limiting part, a second limiting part, a third limiting part and a fourth limiting part are installed on the insertion pipe;
The first guide component is used for puncturing a blood vessel, the first guide component and the second guide component are used for limiting the perfusate in the cannula to flow unidirectionally, the first limiting component is used for fixing the cannula in the blood vessel, the second limiting component is used for limiting the second guide component, the second guide component in a vacuum state is prevented from moving before being fixed with the blood vessel, the vacuum environment in the cannula is kept, the third limiting component is used for releasing the limit of the second limiting component on the first limiting component, the vacuum environment in the cannula is released, the perfusate can enter the cannula, and the fourth limiting component is used for limiting the second guide component so as to release the limitation of the second guide component on the perfusate in the cannula to flow unidirectionally;
The second guide part comprises a fixed clamping table fixedly arranged at the other end of the insertion pipe, a second cavity is formed in the fixed clamping table, a plurality of limiting rods are fixedly arranged on the inner side of the second cavity in an annular array, the bottom ends of the limiting rods are fixedly connected with the same supporting ring, a second through hole is formed in the top of the fixed clamping table, a second sphere is placed in the second cavity, the diameter of the second sphere is larger than that of the second through hole, the second cavity is communicated with the second through hole, and two horizontal limiting holes are symmetrically formed in the outer side of the second sphere around the axis of the fixed clamping table;
The second limiting component comprises two third cavities arranged in the fixed clamping table, the two third cavities are symmetrical with respect to the axis of the insertion tube, the two third cavities are internally provided with first sliding rings in a sliding sleeve mode, the first sliding rings are waist-shaped rings, one end of each first sliding ring is fixedly provided with a first sliding rod which is in sliding sleeve connection with the third cavity, the first sliding rods penetrate through and extend into the second cavities, the first sliding rods are inserted into the horizontal limiting holes, a first fixed shaft is sleeved in the first sliding rings in a sliding mode, the outer side of the first fixed shaft is fixedly sleeved with a second sliding rod, one side of each first sliding ring is provided with a first through groove, each second sliding rod is located in the first through groove, the bottoms of the third cavities are fixedly provided with first springs, and the top ends of the first springs are fixedly connected with the second sliding rods.
2. The rapid fixation and infusion device for liver in liver transplantation according to claim 1, wherein the first guiding component comprises a needle fixedly installed at one end of the cannula, a plurality of liquid outlets are formed in the outer side of the needle in a ring-shaped array, a first through hole is formed in the top of the needle, a first cavity is formed in the needle, a first sphere is placed in the first cavity, the first through hole and the liquid outlets are communicated, and the diameter of the first sphere is larger than that of the first through hole.
3. The rapid fixation perfusion device for liver in liver transplantation according to claim 1, wherein the first limiting component comprises a contraction bag fixedly installed in the annular groove, a plurality of fixing rings are fixedly installed on the inner side of the contraction bag in an annular array, a plurality of connecting rings are sleeved on the fixing rings, a plurality of movable columns are sleeved on the outer side of the insertion tube in a sliding mode in the annular array, the movable columns penetrate through and extend into the insertion tube, one ends, far away from each other, of the movable columns are fixedly connected with the connecting rings, limiting rings are fixedly sleeved on the outer sides of the movable columns, and liquid outlet cavities are formed in the movable columns.
4. The rapid fixation and infusion device for liver in liver transplantation according to claim 1, wherein two clamping holes are symmetrically formed in the top of the fixing clamping table with respect to the axis of the fixing clamping table, the two clamping holes penetrate and extend to the third cavity, and the second sliding rod is in sliding sleeve connection with the clamping holes.
5. The rapid liver fixation perfusion device for liver transplantation according to claim 1, wherein the third limiting component comprises a movable clamping table sleeved in the fixed clamping table, two fourth cavities are formed in the movable clamping table, the two fourth cavities are symmetrical with respect to the axis of the movable clamping table, second sliding rings are slidably sleeved in the two fourth cavities, a third sliding rod slidably sleeved with the fourth cavities is fixedly arranged at one end of each second sliding ring, the second sliding ring is a waist-shaped ring, a second fixing shaft is slidably sleeved in the second sliding ring, a fourth sliding rod penetrating through and extending out of the movable clamping table is fixedly sleeved on the second fixing shaft, a second through groove is formed in the outer side of each second sliding ring, the fourth sliding rod is located in the second through groove, a second spring is fixedly arranged on one side of each fourth cavity, and one end of each second spring is fixedly connected with the fourth sliding rod.
6. The rapid fixation and infusion device for liver in liver transplantation according to claim 5, wherein the fixing clamping table is provided with two clamping grooves which are symmetrical about the center of the axis of the fixing clamping table, and the fourth sliding rod is positioned in the clamping groove.
7. The rapid fixation perfusion device for liver in liver transplantation according to claim 1, wherein the fourth limiting component comprises a fifth sliding rod which is in sliding sleeve connection with one side of the fixing clamping table, the fifth sliding rod penetrates through and extends to the fifth sliding rod in the second cavity, and a limiting disc is fixedly arranged at one end of the fifth sliding rod in the second cavity.
8. The rapid fixation and infusion device for liver in liver transplantation according to claim 5, wherein the movable clamping table is internally provided with a liquid injection hole, a perfusion tube is fixedly sleeved in the liquid injection hole, and one end of the perfusion tube is fixedly connected with a liver perfusion machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210675848.9A CN115252072B (en) | 2022-06-15 | 2022-06-15 | Quick fixing and pouring device for liver in liver transplantation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210675848.9A CN115252072B (en) | 2022-06-15 | 2022-06-15 | Quick fixing and pouring device for liver in liver transplantation |
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| CN115252072A CN115252072A (en) | 2022-11-01 |
| CN115252072B true CN115252072B (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (7)
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|---|---|---|---|---|
| WO1983003535A1 (en) * | 1982-04-16 | 1983-10-27 | Baxter Travenol Lab | Liver perfusion system and bypass member |
| CN104770361A (en) * | 2015-03-11 | 2015-07-15 | 浙江大学 | Supplied-liver quickly-fixed perfusion device for liver transplant |
| CN112790188A (en) * | 2019-10-28 | 2021-05-14 | 西安交通大学医学院第一附属医院 | Rapid perfusion device for liver supply in liver transplantation |
| CN213994410U (en) * | 2020-07-15 | 2021-08-20 | 昆明市第一人民医院 | Hepatic portal vein puncture perfusion device |
| CN113303857A (en) * | 2021-05-31 | 2021-08-27 | 蚌埠冠硕医疗科技有限公司 | A porta hepatis blood flow blocking device for in liver operation |
| CN113678819A (en) * | 2021-09-30 | 2021-11-23 | 四川大学华西医院 | Liver supplying fast fixing perfusion device in liver transplantation |
| CN114366254A (en) * | 2022-03-22 | 2022-04-19 | 中南大学 | Liver puncture outfit |
-
2022
- 2022-06-15 CN CN202210675848.9A patent/CN115252072B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1983003535A1 (en) * | 1982-04-16 | 1983-10-27 | Baxter Travenol Lab | Liver perfusion system and bypass member |
| CN104770361A (en) * | 2015-03-11 | 2015-07-15 | 浙江大学 | Supplied-liver quickly-fixed perfusion device for liver transplant |
| CN112790188A (en) * | 2019-10-28 | 2021-05-14 | 西安交通大学医学院第一附属医院 | Rapid perfusion device for liver supply in liver transplantation |
| CN213994410U (en) * | 2020-07-15 | 2021-08-20 | 昆明市第一人民医院 | Hepatic portal vein puncture perfusion device |
| CN113303857A (en) * | 2021-05-31 | 2021-08-27 | 蚌埠冠硕医疗科技有限公司 | A porta hepatis blood flow blocking device for in liver operation |
| CN113678819A (en) * | 2021-09-30 | 2021-11-23 | 四川大学华西医院 | Liver supplying fast fixing perfusion device in liver transplantation |
| CN114366254A (en) * | 2022-03-22 | 2022-04-19 | 中南大学 | Liver puncture outfit |
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| Publication number | Publication date |
|---|---|
| CN115252072A (en) | 2022-11-01 |
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