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Full text of "USPTO Patents Application 10532180"

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Claims 



1. An orthopaedic ratcheting forceps, especially for fixation 
5 of fractui-es, with two handles (2, 12), wherein a first catching 
element (5 or 35) is mounted pivotally with one handle (2 or 
12) , wherein a complementary catching element (26 or 37) is 
mounted on the othei^ handle (12 or 2), wherein the catching ele- 
ments (26, 27) can assume only two stable settings which can be 

10 switched with a single hand, one closed setting within which the 
jaws (4) of the forceps can only be further closed and an open 
setting within which the handles (2, 12) of the forceps are 
freely movable, so that the forceps can be opened as well as 
closed, characterised in that a spring means (28; 47) is pro- 

15 vided in one handle (12), said spring means (28; 47) is biased 
between two mounting points, a lever end (25; 58; 49) connected 
with one of the catching elements (26; 37) engages the spring 
means (28; 47) and thi-ough movement of an activation element 
(32; 42; 49) the lever end (25; 49) is* switchable between the 

20 . closed setting auid the open setting. 

2- The forceps according to claim 1, wherein the activation 
element is the one handle (12) which is pivotable. 

25 3. The forceps according to claim 1 or 2, wherein the spring 
means is a leaf spring (28) mounted within the one handle (12) 
or wherein the spring means is a part of said one handle (12) 
having a memory effect allowing for the two settings. 



30 4. The forceps according to claim 3, wherein said spring (28) 
is mounted between abutting side walls (14, 24) within said han- 
dle (12) . 



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5. The forceps according to claim 4, wherein said one handle 
(12) compi*ises two portions (22, 32) hinged together at a pivotT 
ing point (13) , wherein said pivoting point is the second mount- 
ing point (13) of the spring (28) and wherein said spring (28) 
5 is confined between two, especially convex, side walls (14, 24) 
of the jaws portion (22) of the two portions (22, 32) and the 
prolongation of the fingerhole portion (32) of the two portions 
(22, 32) forms the lever end (25) and engages the leaf spring 
(28) . 



6. The forceps according to claim 5, wherein said first catch- 
ing element is a rod (5) mounted pivotally on the other handle 
(2) , the rod (5) extending through an opening (8) within the 
fingerhole portion (32) and having grooves (10) on the side di- 
15 rected towards the jaws (4) of the forceps and wherein the 
grooves (10) of the rod (5S) can be engaged through the comple- 
mentary catching element formed as a nose (26) extending from 
said fingerhole portion (32) . 

20 7. The forceps according to claim 6, wherein said rod (5) is 
prebiased in direction of the jaws (4) of the forceps through a 
spring (7) pushing the i-od (5) in the direction of the grooves 
(10) on the side directed towards the jaws (4) . 

25 8. The forceps according to claim 1, wherein the second mount- 
ing point (57) is the point of engagement of the lever end (58) 
which can be switched between the two side walls (14, 24) of the 
first handle (12). 

30 9. The forceps according to claim 8, wherein the catching ele- 
ments (35) and the complementary catching elements (37) are 
curved elements wherein at least one catching element (35 or 37) 
has a changing radius of cuirvature, in order to provide, in the 



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closed setting - a blocking device upon contact of the surfaces 
(36) of the catching elements (35 and 37) against further move- 
ment in the direction of opening the forceps . 

5 10. The forceps according to claim 1, wherein said first catch- 
ing element is a rod (5) mounted pivotal ly on the other handle 
(2) , the rod (5) extending through an opening (8) within the 
handle (12) and having grooves (50) on the side directed towards 
the jaws (4) of the forceps and wherein the grooves (50) of the 
10 rod (5) can be engaged through the spring (47) , 

11, The forceps according to claim 10, wherein the complementary 
catching element (37) is part of the activation element (49) 
comprising the complementary catching elements (37) which can be 
15 pushed inside said opening (8) within the handle (12) to disen- 
gage the spring (47) from the rod (5) .