Surgery – Instruments – Surgical mesh – connector – clip – clamp or band
Reexamination Certificate
2000-08-18
2003-10-14
Calvert, John J. (Department: 3765)
Surgery
Instruments
Surgical mesh, connector, clip, clamp or band
C606S159000, C606S170000, C606S180000
Reexamination Certificate
active
06632229
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field of the Invention
The present invention relates to an organ anastomosing apparatus and method for forming a bypass by strongly pinching and pressing walls of the adjacent organs of a subject such as patient by adsorbing a pair of magnets to each other so as to cause apoptosis to locally occur and forming a through hole (a passage) for making communication between the organs and anastomosis region around the through hole.
2. Prior Art
In general, the anastomosis of organs such as gut of a body of a subject (which may be described as subject's body hereinlater) is frequently performed to form a bypass (a through hole) between two cavity guts, for example, in order to flow the content of the gut or bile of bile duct again when constriction of the gut or bile duct progresses by its tumor, ulcer, inflammation, or trauma and the like.
An example of a conventional organ anastomosing apparatus used for such type of the anastomosis is described in Japanese Patent Laid-open Publication No. HEI 9-10218. In this example, a pair of magnets capable of being automatically self-centered are disposed on both sides of two organ walls to be anastomosed. By adsorption of a pair of the large and small magnets, the organ walls are strongly pinched from both sides and are compressed (pressed to be pinched) to cause apoptosis to locally occur, thereby forming the anastomosis with the through hole (fistula) and the peripheral rim (edge) of a small magnet is formed at a sharp cut rim (edge) for promoting the anastomosis.
However, in such conventional organ anastomosing apparatus, the peripheral rim of a small magnet is formed at a sharp cut rim. Thus, there is a fear that the other many organs mare damaged by the cut rim until this small magnet is inserted into a predetermined organ, is inducted into a predetermined site (region), and is disposed at the site.
In addition, after the anastomosis with the through hole has been formed by the adsorption of a pair of magnets, there is no means for holding the through hole formation. Thus, after the anastomosis, for example, it is required to take complicated steps, such that a drainage tube is inserted into the body independent of the organ anastomosing apparatus and inducted to the through hole to be inserted into the through hole, and that the inserted state must be maintained about three months until the anastomosis has been completed.
Further, an N-pole face and an S-pole face on the adsorption surfaces of a pair of magnets each have only one face. Thus, if the adsorption surfaces are disposed in opposite to each other with high precision via an organ wall of the subject, the same poles resist against each other and cannot be adsorbed by each other so that it is required for these magnets to have high disposition precision, and a pair of magnets are not always adsorbed easily.
SUMMARY OF THE INVENTION
The present invention was conceived to overcome or solve the defects or problems encountered in the prior art mentioned above and to provide an organ anastomosing apparatus and method capable of safely disposing a pair of magnets at predetermined sites or regions each in one of organs without almost damaging the other organ and forming anastomosis and capable of simply and reliably achieving through hole formation after the anastomosis.
It is another object of the present invention to provide an organ anastomosing apparatus and method capable of simply and reliably performing alignment between the adsorption surfaces of a pair of magnets at predetermined regions in the organs of a subject to be anastomosed.
These and other objects can be achieved according to the present invention by providing, in one aspect, an organ anastomosing apparatus comprising:
a pair of magnets being disposed to predetermined sites of organs of a subject to be anastomosed to each other so as to be opposed to each other through wall portions of the respective organs, the magnets being mutually adsorbed to each other so as to form an anastomosis site having a through hole for making communication between the organ walls;
a flexible guide wire detachably mounted to at least one of the paired magnets; and
a guide tube inserted into a body of the subject with the guide wire being inserted therein, the guide tube coming into contact with a guide wire mount surface of the one of magnets so as to support the one magnet when the guide wire is removed from the one magnet, the guide tube being inserted into the through hole of the anastomosis site to maintain formation of the through hole.
In preferred embodiments of this aspect, the apparatus further comprises a cylindrical sheath inserted into the body of the subject from an outside thereof so as to insert the one magnet to which the guide wire is mounted to guide the one magnet in a vicinity of the predetermined sites of organs.
The one magnet has an adsorption surface larger than that of the other one magnet. The paired magnets may be formed in substantially a same size. A surface of the magnet is coated with at least one of an acid resistant membrane and a thrombus resistant membrane. The magnet may be formed of a rare earth element.
The other one magnet is taken into the subject's body and then guided from an outside thereof by means of an induction magnet to a predetermined site of the organ of the subject. The induction magnet has an N-pole and an S-pole opposite to each other and an axial intermediate portion to which a stem is provided so as to extend in a direction perpendicular to the axial intermediate portion.
The other one magnet is removably pinched by pinching means of an endoscope to be disposed at the predetermined site of the organ of the subject's body. The pinching means of the endoscope is made of a non-magnetic material. The other one magnet is provided with a flexible non-magnetic holding member to be pinched by the pinching means of the endoscope.
The organ may be one of digestive system, blood vessel, ureter, bladder, skin and bone.
According to the present invention, when a pair of magnets disposed in opposite to each other via each organ wall of the subject's body are adsorbed to each other, the organ wall is pinched from both sides by a pair of the magnets and is compressed (pressed to be pinched). Then, the apoptosis occurs and the through hole making communication between the organ walls is formed. At the same time, the peripheral rim of the through hole adheres, the anastomosis is formed and a bypass is thereby formed. Then, a guide tube and a guide wire are removed from one magnet. Further, a tip end of the guide tube is inserted into the through hole of the anastomosis site and the inserted state is maintained until the anastomosis has been completed. In this manner, the formation of the through hole at the anastomosis site is maintained. On the other hand, a pair of magnets removed, with being adsorbed to each other, are discharged to the outside of the body together with the dejection.
Therefore, according to the present invention, unlike the prior art, since the peripheral rim of the magnet is not formed at a sharp cut rim. There can be effectively prevented such a fear that the other many organs are damaged by the cut rim until the magnet is inserted into a predetermined organ, is inducted into a predetermined site, and is disposed at the site.
In addition, after the anastomosis with the through hole has been formed on the organ walls by the adsorption of a pair of magnets to thereby form the through hole, the guide tube already inserted into the subject's body in the vicinity of the anastomosis site together with one magnet is inserted into the through hole of the anastomosis site immediately, and the inserted state is maintained until the anastomosis has been completed. In this manner, the formation of the through hole can be easily maintained. Therefore, unlike the prior art, after the anastomosis, there can be eliminated the complicated steps, such that a drainage tube is inserted into the body independent of the organ anastomosi
Calvert John J.
Muromoto Jr. Robert H.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Yugengaisha Pacs Optica Japan
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