Device for clamping organic tissue, in particular blood vessels

Abstract

Device for clamping organic tissue, in particular blood vessels in minimal invasive surgery, with an application base for holding two clamping bars of absorbing material which, in their final position, are connectable to become a tissue clamp. The tissue clamp can be separated from the latter by means of an inner pusher. The application base ( 2; 23 ) perpendicular to its longitudinal guide slot is equipped with two clamping bars and these can be merged to a tissue clamp. The application bar and clamping bars have guides, holders and fixatives which serve to precisely align the elements of the device and their unclamping.

1 . Device for clamping organic tissue, in particular blood vessels with a base plate, that is attached in a removable manner to the distal end of an application instrument and from which an applicator base stretches out distally in which a inner pusher can be shoved lengthwise, whereby the clamping bars primarily vertical to the applicator base are of absorbing material and can be pushed toward one another from the initial position, where they have a large distance from one another, to the final position, where they are close to one another and, wherein, the applicator base ( 2 ;  23 ) has a first holder ( 12 ;  17 ) on its distal end ( 5 ), wherein perpendicular to the applicator base ( 2 ;  23 ) the first clamp bar ( 7 ;  19 ) can be inserted and at a distance from this the second clamp bar ( 8 ;  25 ) can be inserted perpendicularly to the applicator base ( 2 ;  23 ), whereby the two holders ( 12 ;  13 ;  17 ;  27 ) as well as the corresponding clamp bars ( 7 ;  8 ;  19 ;  25 ) have holders and/or guides which connect the holders ( 12 ;  13 ;  17 ;  27 ) by means of a guide slot ( 4 ;  24 ) running the length of the applicator base ( 2 ;  23 ), whereby the guide slot ( 4 ;  24 ) and at least one of the 7xa has at least guide device by means of which the mutual mobility of the clamp bars ( 7 ;  8 ;  19 ;  25 ) is assured while continuously maintaining the opposite orientation to one another and the clamp bars ( 7 ;  8 ;  19 ;  25 ) have an attachment device to attach themselves in their final position.  
   
   
       2 . Device in accordance with  claim 1 , wherein the inserting and holding of the clamp bars ( 7 ;  8 ;  19 ;  25 ) into or within the holders ( 12 ;  13 ;  17 ;  27 ) of the applicator base ( 2 ;  23 ) is force- and form-fitting.  
   
   
       3 . Device in accordance with  claim 1 , wherein the inserting and holding of the clamp bars ( 7 ;  8 ;  19 ;  25 ) is primarily by force-fitting and the holding and/or guiding is formed by the dimensioning of the corresponding areas of the holders ( 12 ;  13 ;  17 ;  27 ) of the applicator base ( 2 ;  23 ) and the bases ( 10 ;  11 ;  18 ;  26 ) of the clamp bars ( 7 ;  8 ;  19 ;  25 ) as a press fit.  
   
   
       4 . Device in accordance with  claim 1 , by wherein the inserting and holding of the clamp bars ( 7 ;  8 ;  19 ;  25 ) is primarily by force-fitting and the holding and/or guiding of the holders ( 12 ;  13 ;  17 ;  27 ) and the clamp bars ( 7 ;  8 ;  19 ;  25 ) is formed by at least one traverse slot ( 14 ;  20 ) within and perpendicular to the applicator base ( 2 ;  23 ) and at least one corresponding projection rising from a base ( 10 ;  11 ;  18 ;  26 ) of the clamp bars ( 7 ;  8 ;  19 ;  25 ).  
   
   
       5 . Device in accordance with  claim 1 , wherein projection of the holders ( 12 ;  13 ;  17 ;  27 ) is located on the applicator base ( 2 ;  23 ) and the traverse slot ( 14 ;  20 ) on the bases ( 10 ;  11 ;  18 ;  26 ) of the clamp bars ( 7 ;  8 ;  19 ;  25 ).  
   
   
       6 . Device in accordance with  claim 1 , wherein the traverse slot ( 20 ) of the distal holder ( 17 ) is in the direction of the fist clamp bar ( 19 ) and a corresponding projection is on this which is formed as a projecting attachment shoulder ( 21 ) from the base ( 18 ).  
   
   
       7 . Device in accordance with  claim 1 , wherein an attachment shoulder runs along the traverse slot ( 20 ) and is elastic in such a way that when moving the clamp bar ( 19 ) toward the applicator base ( 23 ) and that it exits from the traverse slot ( 20 ) when the force limit for the separation of the tissue clamp of the applicator base ( 23 ) and the tissue clamp can be moved along the applicator base ( 23 ).  
   
   
       8 . Device in accordance with  claim 1 , comprising the traverse slot ( 20 ) and the attachment shoulder ( 21 ) being on both sides of the distal first holder ( 17 ) on the side closer to the base.  
   
   
       9 . Device in accordance with  claim 1 , wherein at least one traverse slot ( 14 ) in the insertion direction of the clamp bars ( 7 ;  8 ; 25 ) projects as holder and guide of the holders ( 12 ;  13 ;  27 ) for the form-fit insertion in the projection which projects as corresponding guide pin ( 15 ) from the bases ( 10 ;  11 ;  26 ) of the clamp bars ( 7 ;  8 ;  25 ).  
   
   
       10 . Device in accordance with  claim 1 , wherein one of the traverse slots ( 14 ) is foreseen on each side of the holders ( 12 ;  13 ;  27 ) which can slip into the corresponding guide pins ( 15 ) on either side of the bases ( 10 ;  11 ;  26 ) of the clamp bars ( 7 ;  8 ;  25 ).  
   
   
       11 . Device in accordance with  claim 1 , wherein two of the traverse slots ( 14 ) are located one behind the other on both sides in the longitudinal direction of the applicator base ( 2 ;  23 ) and in each of the guide slots ( 4 ;  24 ) a pair of corresponding guide pins ( 15 ) slip into the insertion direction of the clamp bars ( 7 ;  8 ;  25 ) one behind the other.  
   
   
       12 . Device in accordance with  claim 1 , wherein the guide slot ( 4 ;  24 ) connecting the first and second holders ( 12 ;  13 ;  17 ;  27 ) have a guiding device to take up and guide the clamp bar ( 8 ;  25 ) while it is moving along the applicator base ( 2 ;  23 ).  
   
   
       13 . Device in accordance with  claim 1 , comprising the guide device having at least one longitudinal slot ( 28 ) and at least one corresponding projection to this is formed that located such that it is either for the applicator base ( 2 ;  23 ) or the clamp bar ( 8 ;  25 ).  
   
   
       14 . Device in accordance with  claim 1 , comprising the longitudinal slot  28  being in the guide slot ( 4 ;  24 ) of the applicator base ( 2 ;  23 ) and the corresponding projection projects from the base ( 11 ;  26 ) of the clamp bar ( 8 ;  25 ).  
   
   
       15 . Device in accordance with  claim 1 , comprising there being several longitudinal slots ( 28 ) of which the cross-section of the guide slot ( 4 ;  24 ) of the applicator base ( 2 ;  23 ) having a T or double T-shaped form into which the corresponding projections from the base ( 11 ;  26 ) of the clamp bar ( 8 ;  25 ) slip.  
   
   
       16 . Device in accordance with  claim 1 , wherein at least one projection projects from the guide slot ( 4 ;  24 ) and a corresponding longitudinal slot  28  stretches along the base ( 11 ;  26 ) of the clamp bar ( 8 ;  25 ).  
   
   
       17 . Device in accordance with  claim 1 , wherein a guide in an applicator base ( 34 ) is formed by at least one base ( 32 ) and a corresponding longitudinal slot ( 29 ) which stretches along the applicator base ( 34 ) and is allocated to either a guide slot ( 33 ) of the applicator base ( 34 ) or a base of a clamp bar ( 31 ).  
   
   
       18 . Device in accordance with  claim 1 , wherein the base ( 32 ) of the applicator base ( 34 ) stretches into the guide slot ( 33 ) and slips into the longitudinal slot ( 29 ) of the base ( 30 ).  
   
   
       19 . Device in accordance with  claim 1 , wherein the base ( 32 ) and the longitudinal slot ( 29 ) located together on both sides of the applicator base ( 34 ) or base ( 30 ) and the applicator base ( 34 ) can be spread out to equip it with the clamp bar ( 31 ) until the base ( 30 ) is taken up in the guide slot ( 33 ) and the base ( 32 ) enters into the longitudinal slot ( 29 ).  
   
   
       20 . Device in accordance with  claim 1 , wherein the holder ( 12 ;  13 ), the clamp bars ( 7 ;  8 ;  19 ;  25 ), traverse slot ( 14 ), guide slot ( 4 ;  24 ) and longitudinal slot ( 28 ) are dimensioned so that the tissue clamp can be pushed distally from the applicator base ( 2 ;  23 ) by means of the inner push ( 3 ) after reaching the final position.  
   
   
       21 . Device in accordance with  claim 1 , comprising the attachment device being formed by a holding pin ( 36 ) and coaxial bore ( 37 ) that runs coaxially the length of the applicator base ( 2 ;  23 ) and is on either the one or the other clamp bars ( 7 ;  8 ;  19 ;  25 ).  
   
   
       22 . Device in accordance with  claim 1 , wherein the holding pin ( 36 ) and the holding bore ( 37 ) are located on the bases ( 10 ;  11 ;  18 ;  26 ) of the clamp bars ( 7 ;  8 ;  19 ;  25 ), these formed with corresponding cross-section and an overlapping of such that they are parallel to the clamp bars ( 7 ;  8 ;  19 ;  25 ) during the clamping of the tissue and also they are securely fastened in the final position both force and form-fitting.  
   
   
       23 . Device in accordance with  claim 1 , wherein the cross-section shows the form of geometric figures crossing over and merging with one another around a central axis ( 38 ).  
   
   
       24 . Device in accordance with  claim 1 , comprising the cross-section being formed by overlapping circles forming a star around an axis ( 38 ).  
   
   
       25 . Device in accordance with  claim 1 , comprising the holding pin ( 36 ) and the holding bore ( 37 ) being shaped correspondingly either as pyramids, cones, or cylinders.  
   
   
       26 . Device in accordance with  claim 1 , comprising the clamp bars ( 7 ;  8 ;  19 ;  25 ) being slightly conical and pre-stressed toward one another 50 that they have a greater distance to one another near the applicator base ( 2 ;  23 ) than they do farther away from it.  
   
   
       27 . Device in accordance with  claim 1 , by wherein the distal front surface of the inner push ( 3 ) and the proximal front surface of the base ( 11 ;  26 ) of the clamp bar ( 8 ;  25 ) have corresponding profiles.  
   
   
       28 . Device in accordance with  claim 1 , wherein the profiles are shaped by a centering pin ( 39 ) and a centering bore ( 40 ) that is located either on the base ( 11 ;  26 ) or the inner push ( 3 ).