Surgery – Instruments – Surgical mesh – connector – clip – clamp or band
Patent
1998-09-16
2000-05-23
Buiz, Michael
Surgery
Instruments
Surgical mesh, connector, clip, clamp or band
A61B 1708
Patent
active
060661488
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a method of connecting an end region of a first vessel to the side of a second vessel by carrying out an end-to-side anastomosis.
BACKGROUND ART
A method of this kind is described in the international application PCT/DK95/00430. In this previous method, the stapling plungers as well as the associated clamping members were adapted to move in directions substantially parallel to the passage, in which the graft vessel was placed in readiness for establishing an end-to-side anastomosis with e.g. a coronary artery. With such an arrangement, the number of staples as well as their mutual closeness were limited by the purely mechanical need for guiding the stapling plungers in their operative movement, with the result that in the "seam" connecting the two vessels, there could be substantial distances between adjacent staples.
DISCLOSURE OF THE INVENTION
It is the object of the present invention to provide a method of the kind referred to above, with which it is possible to use the instrument for establishing anastomoses with a greater number of staples and with smaller distances between adjacent staples than has been possible with the previously known method referred to above. This object is achieved by proceeding as set forth hereinbelow. In this manner, the guideways for the stapling plungers will mostly be situated at a greater "radius" than the staple-bending recesses, so that there is ample space for forming these guideways in a greater number than previously, to converge at very small mutual distances at the staple-bending recesses in the anvil.
The present invention also relates to an anastomotic instrument for carrying out the method according to the invention, and this instrument is characterized by the anastomotic instrument also described hereinbelow.
Advantageous embodiments of the method and the anastomotic instrument according to the invention, the effects of which--beyond what is self-evident--are explained in the following detailed part of the present description.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following detailed part of the present description, the invention will be explained in more detail with reference to the exemplary embodiments of an anastomotic instrument according to the invention shown in the drawings, in which
FIGS. 1-8 show the process of performing an end-to-side anastomosis using an anastomotic instrument according to the invention subject of the application PCT/DK95/00430 referred to initially, FIGS. 1-7 being drawn in a highly simplified manner for ease of understanding,
FIGS. 9-11 in perspective and with certain parts cut away show a practical embodiment of an anastomotic instrument according to the present invention with the various possible relative positions of the relatively movable parts,
FIGS. 12-14 are side views of a staple-pusher set consisting of a stapling plunger, a clamping slide and their common operating slide in positions corresponding to those shown in FIG. 9-11, respectively.
FIG. 15 is a sectional side view of the complete instrument,
FIG. 16 is a sectional view taken along the line XVI--XVI in FIG. 15,
FIGS. 17-19 show a core member with associated anvil tube as viewed from the rear, side and front, respectively, and
FIGS. 20-22 show a housing likewise as viewed from the rear, side and front, respectively.
Please note that the "front end" of the instrument is the end comprising the part in operation being in contact with the anastomosis being established, in this case the anvil 503A, 503B.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
As mentioned above, the embodiment shown in FIGS. 1-8 of the anastomosis instrument according to the invention subject of the application PCT/DK95/00430 constitutes a simplified version with the primary purpose of explaining the invention; this does not, however, preclude the possibility of using this embodiment in actual practice.
Thus, FIG. 1 shows an anastomosis instrument 1 consisting of three main components that are movable relative to each other in the longit
REFERENCES:
patent: 5119983 (1992-06-01), Green et al.
patent: 5205459 (1993-04-01), Brinkerhoff et al.
patent: 5292052 (1994-03-01), Bilotti et al.
patent: 5366462 (1994-11-01), Kaster et al.
patent: 5695504 (1997-12-01), Gifford, III et al.
Bernafon AG
Buiz Michael
Oticon A/S
Trinh Vikki
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