CN101849852B - Magnetic device for portacaval shunt - Google Patents

Magnetic device for portacaval shunt Download PDF

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Publication number
CN101849852B
CN101849852B CN2010102002427A CN201010200242A CN101849852B CN 101849852 B CN101849852 B CN 101849852B CN 2010102002427 A CN2010102002427 A CN 2010102002427A CN 201010200242 A CN201010200242 A CN 201010200242A CN 101849852 B CN101849852 B CN 101849852B
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China
Prior art keywords
permanent magnet
magnet
seal wire
shunt
electric
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CN2010102002427A
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Chinese (zh)
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CN101849852A (en
Inventor
吕毅
严小鹏
马锋
李建辉
王善佩
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Xian Jiaotong University
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Xian Jiaotong University
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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
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00876—Material properties magnetic
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B2017/1107—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis for blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
    • A61B2017/1117—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus adapted for discharge after necrotisation, e.g. by evacuation, expulsion or excretion

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)
  • Magnetic Treatment Devices (AREA)

Abstract

The invention provides a magnetic device for portacaval shunt. The magnetic device for the portacaval shunt comprises a permanent magnet set, wherein the permanent magnet set consists of a first permanent magnet and a second permanent magnet, wherein the first permanent magnet is provided with a first guide wire; and the second permanent magnet is provided with an electromagnet with a second guide wire matched with the second permanent magnet. The shunt from a portal vein to inferior vena cava is finished by combining two permanent magnets with corresponding sizes and shapes with a mini electromagnet, so that the defect that an internal supporting tube for the shunt is narrowed gradually, and even is obstructed is avoided. In addition, the surface of the built anastomotic stoma is smooth; the shunt port can remain unobstructed for a long time; and after the anastomotic stoma of the portal vena cava is formed, the two magnets can be taken out through the guide wires remained in the operation without a foreign matter reserved in a body.

Description

A kind of magnetic devices of portacaval shunt
Technical field
The present invention relates to a kind of medical apparatus and instruments, be specifically related to a kind of magnetic devices of portacaval shunt.
Background technology
The device of present portacaval shunt mainly is through interior stay pipe device, between portal vein and postcava, sets up passage, inserts interior stay pipe, to realize portacaval shunt.But because its long-term efficacy is poor; Main cause is that the interior stay pipe that is used to shunt can take place narrow gradually; Even inaccessible, this is owing in the bracing frame due to the false neointimal hyperplasia, report that stenosis rate 1 year was 40.5%; Reached 50.8% in 2 years, these shortcomings have had a strong impact on the long-term efficacy of interior stay pipe device.
Summary of the invention
In order to overcome the deficiency that above-mentioned prior art exists; The object of the present invention is to provide a kind of magnetic devices of portacaval shunt, utilize two corresponding block permanent magnets of size and shape to combine minitype electromagnet to accomplish portal vein, avoided like this adopting the interior stay pipe of shunting can take place narrow gradually to inferior caval shunting; Even inaccessible shortcoming; The anastomotic stoma smooth surface of its foundation in addition, diffluence pass can keep clear for a long time, and after a door caval vein anastomotic stoma forms; Can two blocks of Magnet be taken out through the seal wire of keeping somewhere in the art, can not be detained foreign body in vivo.
In order to achieve the above object, the technical scheme that the present invention adopted is:
A kind of magnetic devices of portacaval shunt; Comprise permanent magnet groups; Described permanent magnet groups is made up of first permanent magnet 1 that has first seal wire 4 and second permanent magnet 2; Second permanent magnet 2 has the electric magnet that has second seal wire 53 that matches with it, and the outside of electric magnet 3 is by colloidal silica 6 parcels, and the coil power line 12 that has plug of second seal wire 5 and electric magnet 3 stretches out outside the colloidal silica 6.
The length of described first permanent magnet 1 is greater than the width of the length of second permanent magnet 2 or first permanent magnet 1 width greater than second permanent magnet 2.
Described first permanent magnet 1 is the semicylinder of two ends circle obtuse, and second permanent magnet 2 is the semicylinder of an end circle obtuse, and colloidal silica 6 is the semicylinder of an end circle obtuse.
Through utilizing two corresponding block permanent magnets of size and shape to combine minitype electromagnet to accomplish portal vein to inferior caval shunting; It is narrow to have avoided adopting the interior stay pipe of shunting to take place gradually like this, even inaccessible shortcoming, the anastomotic stoma smooth surface of its foundation in addition; Diffluence pass can keep clear for a long time; And after door caval vein anastomotic stoma forms, can two blocks of Magnet be taken out through the seal wire of keeping somewhere in the art, can not be detained foreign body in vivo.
Description of drawings
Fig. 1 is the structural representation of first permanent magnet of the present invention.
Fig. 2 is the structural representation of second permanent magnet of the present invention.
Fig. 3 is second seal wire of the present invention and has the coil power line of plug and the structural representation of colloidal silica.
Fig. 4 is the structural representation of second seal wire of the present invention and the electric magnet of coil power line that has plug and colloidal silica inside.
Fig. 5 is the view that first permanent magnet of the present invention is presented to the preparatory anastomotic position of postcava.
Fig. 6 is the view that second permanent magnet of the present invention is delivered to the preparatory anastomotic position of portal vein.
Fig. 7 is the view of first permanent magnet of the present invention and the second permanent magnet adhesive.
Fig. 8 is the view after through second seal wire former road of electric magnet being extracted of the present invention.
Fig. 9 is first permanent magnet 1 of the present invention and second permanent magnet 2 view when extracting.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done more detailed explanation.
As shown in Figure 1, first permanent magnet, 1, the first permanent magnet 1 that has first seal wire 4 of portacaval shunt magnetic devices is the semicylinder of two ends circle obtuse.
As shown in Figure 2, second permanent magnet, 2, the second permanent magnets 2 of portacaval shunt magnetic devices are the semicylinder of an end circle obtuse.
As shown in Figure 3, second seal wire 5 stretches out outside the colloidal silica 6 with the coil power line 12 that has plug, and colloidal silica 6 is the semicylinder of an end circle obtuse.
As shown in Figure 4, the outside that has the electric magnet 3 of second seal wire 5 is wrapped up by colloidal silica 6, has the coil power line 12 of plug and the coil of electric magnet 3 and is connected.
In addition, the length of described first permanent magnet 1 is slightly larger than the length of second permanent magnet 2, and perhaps the width of first permanent magnet 1 is slightly larger than the width of second permanent magnet 2.
Operation principle of the present invention is: earlier that first permanent magnet 1 is presented to postcava 9 preparatory anastomotic positions is as shown in Figure 5 through connecting first seal wire 4; Connect the power supply of electric magnet 3 through the plug of power line 12; Make it with the 2 tight adhesives of second permanent magnet after, through liver 8 puncture and through the seal wire 5 of electric magnet 3 second permanent magnet 2 of tight adhesive to be delivered to portal vein 10 preparatory anastomotic positions as shown in Figure 6, that first permanent magnet 1 and 2 adhesives of second permanent magnet is as shown in Figure 7; The reverse electromagnet power supply of connecting after the adhesive; 2 magnetic of this moment electric magnet 3 and second permanent magnet change, and because of repulsion separates, extract electric magnet 3 former roads as shown in Figure 8 through second seal wire 5 this moment between the two; Keep somewhere seal wire 4 and set up, extract as shown in Figure 9 together with attraction first permanent magnet 1 and second permanent magnet 2 together seal wire 4 until door caval vein anastomotic stoma 11.
Through utilizing two corresponding block permanent magnets of size and shape to combine minitype electromagnet to accomplish portal vein to inferior caval shunting; It is narrow to have avoided adopting the interior stay pipe of shunting to take place gradually like this, even inaccessible shortcoming, the anastomotic stoma smooth surface of its foundation in addition; Diffluence pass can keep clear for a long time; And after door caval vein anastomotic stoma forms, can two blocks of Magnet be taken out through the seal wire of keeping somewhere in the art, can not be detained foreign body in vivo.First permanent magnet 1 that is adopted in addition is that blunt semicylinder of end circle and colloidal silica 6 are the blunt semicylinder of end circle for blunt semicylinder, second permanent magnet 2 of two terminal circle; Make surperficial slyness insert conveniently; And the length of described first permanent magnet 1 is bigger than the length of second permanent magnet 2 or the width of first permanent magnet 1 is bigger than the width of second permanent magnet 2, can guarantee that a chamber anastomotic stoma forms back first permanent magnet 1 and second permanent magnet 2 and can not fall into and cause in the portal vein and can't extract.

Claims (3)

1. the magnetic devices of a portacaval shunt; It is characterized in that: comprise permanent magnet groups; Described permanent magnet groups is made up of first permanent magnet (1) that has first seal wire (4) and second permanent magnet (2); Second permanent magnet (2) has and its electric magnet that has second seal wire (5) (3) of breaking off of adhesive mutually, and the outside of electric magnet (3) is by colloidal silica (6) parcel, and the coil power line (12) that has plug of second seal wire (5) and electric magnet (3) stretches out outside the colloidal silica (6);
Through connecting first seal wire (4) first permanent magnet (1) is presented to postcava (9) anastomotic position in advance earlier; Connect the power supply of electric magnet (3) through the plug of power line (12); Make it and second permanent magnet (2) closely after the adhesive; Through liver (8) puncture and through second seal wire (5) of electric magnet (3) second permanent magnet (2) of tight adhesive is delivered to portal vein (10) anastomotic position in advance, with first permanent magnet (1) and second permanent magnet (2) adhesive, the reverse power supply of connecting electric magnet after the adhesive; Magnetic changes between electric magnet (3) and second permanent magnet (2) at this moment, separates because of repulsion between the two.
2. the magnetic devices of a kind of portacaval shunt according to claim 1 is characterized in that: the length of described first permanent magnet (1) is greater than the width of the length of second permanent magnet (2) or first permanent magnet (1) width greater than second permanent magnet (2).
3. the magnetic devices of a kind of portacaval shunt according to claim 1 and 2; It is characterized in that: described first permanent magnet (1) is the semicylinder of two ends circle obtuse; Second permanent magnet (2) is the semicylinder of an end circle obtuse, and colloidal silica (6) is the semicylinder of an end circle obtuse.
CN2010102002427A 2010-06-13 2010-06-13 Magnetic device for portacaval shunt Active CN101849852B (en)

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CN101849852B true CN101849852B (en) 2012-08-29

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102599943B (en) * 2012-04-09 2014-04-16 杨杨 Medical shunt device for portal hypertension
CN110141409B (en) * 2019-06-25 2021-08-20 中国医学科学院阜外医院 Guide wire assembly for conveying forked type covered stent

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2199751Y (en) * 1994-08-17 1995-06-07 刘志红 Constant pressure controller for portacaval H shape shunt

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3893065B2 (en) * 2002-02-15 2007-03-14 有限会社 パックス オプティカ ジャパン Organ anastomosis device
WO2007067206A2 (en) * 2005-05-10 2007-06-14 Michael Gertner Obesity treatment systems
US8864781B2 (en) * 2007-02-28 2014-10-21 Cook Medical Technologies Llc Intestinal bypass using magnets
US8262680B2 (en) * 2008-03-10 2012-09-11 Ethicon Endo-Surgery, Inc. Anastomotic device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2199751Y (en) * 1994-08-17 1995-06-07 刘志红 Constant pressure controller for portacaval H shape shunt

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Hirofuml Akita.Use of a metallic-wall stent in the magnet compression anastomosis technique for bile duct obstruction after liver transplantation.《LIVER TRANSPLANTATION》.2008,第14卷118-120. *
JP特开2003-235852A 2003.08.26
山内荣五郎.消化道介入放射学疗法新进展－磁铁压迫吻合术（三内法）.《日本医学介绍》.2001,第22卷(第2期),76-79. *

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