US20100012002A1 - Universal fixing metal fitting for operating table - Google Patents

Abstract

An object of the present invention is to provide a universal fixing metal fitting1 for an operating table capable of being easily attached and detached, capable of enabling simultaneous firm fixing between the fixing metal fitting, an appliance to be fixed, and an accessory attachment table by performing fastening one time regardless of the existence/nonexistence of a sheet or the like, capable of ensuring the same firm fixing even when the shape of the accessory attachment table is changed and capable of fixing no matter what the shape of the appliance to be fixed is. To achieve the above-described object, there is provided a universal fixing metal fitting1 for an operating table characterized by having a base member2 in which a first attachment leg2bhaving an attachment portion2dand including a slant portion2hformed thereon and a second attachment leg2chaving an attachment portion2eand including a slant portion2iformed thereon are formed continuously with a flat portion2ahaving a screw-engaging hole2kformed at its center, an upper pinching member3 in which a first pinching portion3bis formed continuously with one end of a connecting portion3ahaving a V-cut3kat its center and L-cuts3dformed continuously with the V-cut3k,and in which a second pinching portion3cis formed continuously with the other end of the connecting portion3a,a lower pinching member4 in which a third pinching portion4bis formed continuously with one end of a connecting portion4ahaving a V-cut4kat its center and L-cuts4dformed continuously with the V-cut4k,and in which a fourth pinching portion4cis formed continuously with the other end of the connecting portion4a,and a fastening portion5 in which a handle5chaving spherical stoppers5dprovided on its opposite ends is loosely fitted in a through hole5fin a cylindrical head portion 5aprovided on one end of a screw-engaging shaft5b,the universal fixing metal fitting1 also characterized in that when the upper pinching member3 and the lower pinching member4 are coupled to the base member2, coil springs are attached by being interposed between the first pinching portion3band the attachment portion2d,between the second pinching portion3cand the attachment portion2e,between the third pinching portion4band the attachment portion2dand between the fourth pinching portion4cand the attachment portion2e,and in that the screw-engaging shaft5bis mounted in the screw-engaging hole2kwhen the fastening portion5 is coupled to the base member2. There is also provided a universal fixing metal fitting1 for an operating table having the above-described features and also characterized in that a pressing member5eis attached to a tip of the screw-engaging shaft5b.

Description

TECHNICAL FIELD
• The present invention relates to a fixing metal fitting for an operating table used when a member, an instrument or the like is mounted in any position on an accessory attachment rail along the operating table.
BACKGROUND ART
• A subject and an operating table are covered with a clean sheet or the like during surgical operation. It was, therefore, difficult to mount a conventional fixing metal fitting over a sheet or the like in such a case. A type of fixing metal fitting capable of fixing over a sheet or the like was thereafter developed. However, fixing of the fixing metal fitting on an accessory attachment rail and fixing between the fixing metal fitting and an appliance to be fixed were performed separately from each other. A considerably long time was required for mounting, and the fixing metal fitting, the accessory attachment table and the appliance to be fixed were not firmly fixed and stabilized.
• A fixing metal fitting was also developed in which, as disclosed in U.S. Pat. No. 5,535,973, an accessory attachment rail was pinched between upper and lower arms and a flat plate; a knob was fastened to reduce the distance between left and right arms and the flat plate; and the fixing metal fitting and an appliance to be fixed are were simultaneously fixed on an accessory attachment rail by the pressure of the fastening. However, there was still the same difficulty in mounting, the force for fixing to the accessory attachment rail varied depending on the thickness of a sheet or the like, and it was difficult to obtain a sufficient and stable fixing force.
• Thus, conventional fixing metal fittings lacked safety and were, therefore, not suitable as a fixing metal fitting for fixing an appliance on an accessory attachment rail of an operating table and were incapable of enabling medical practitioners to do medical work without anxiety.
• Also, it was difficult to firmly fix the conventional fixing metal fittings in the case of use with accessory attachment rails differing in shape and an increased number of sheets or the like. Also for this reason, the conventional fixing metal fittings are unsuitable as a medical appliance which needs to be safe.
• It is, therefore, an object of the present invention to provide a universal fixing metal fitting for an operating table capable of being easily attached and detached, capable of enabling simultaneous firm fixing between the fixing metal fitting, an appliance to be fixed, and an accessory attachment table by performing fastening one time regardless of the existence/nonexistence of a sheet or the like, capable of ensuring the same firm fixing even when the shape of the accessory attachment table is changed and capable of fixing no matter what the shape of the appliance to be fixed is.
DISCLOSURE OF THE INVENTION
• To achieve the above-described object, according to the present invention, there is provided a universalfixing metal fitting1 for an operating table characterized by having abase member2 in which afirst attachment leg2bhaving anattachment portion2dand including aslant portion2hformed thereon and asecond attachment leg2chaving anattachment portion2eand including aslant portion2iformed thereon are formed continuously with aflat portion2ahaving a screw-engaginghole2kformed at its center, anupper pinching member3 in which afirst pinching portion3bis formed continuously with one end of a connectingportion3ahaving a V-cut3kat its center and L-cuts3dformed continuously with the V-cut3k,and in which asecond pinching portion3cis formed continuously with the other end of the connectingportion3a,alower pinching member4 in which athird pinching portion4bis formed continuously with one end of a connectingportion4ahaving a V-cut4kat its center and L-cuts4dformed continuously with the V-cut4k,and in which afourth pinching portion4cis formed continuously with the other end of the connectingportion4a,and afastening portion5 in which ahandle5chavingspherical stoppers5dprovided on its opposite ends is loosely fitted in a throughhole5fin acylindrical head portion5aprovided on one end of a screw-engaging shaft5bhaving apressing member5eattached to the other end, the universalfixing metal fitting1 also characterized in that when theupper pinching member3 and thelower pinching member4 are coupled to thebase member2, coil springs are attached by being interposed between thefirst pinching portion3band theattachment portion2d,between thesecond pinching portion3cand theattachment portion2e, between thethird pinching portion4band theattachment portion2dand between thefourth pinching portion4cand theattachment portion2e,and in that the screw-engaging shaft5bis mounted in the screw-engaginghole2kwhen thefastening portion5 is coupled to thebase member2.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is a perspective view of a universal fixing metal fitting for an operating table according to the present invention;
• FIG. 2 is a front view of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 3 is a plan view of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 4 is a left side view of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 5 is a right side view of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 6 is a front view of a base member of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 7 is a plan view of the base member of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 8 is a left side view of the base member of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 9 is a front view of upper and lower pinching members of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 10 is a plan view of the upper pinching member and the lower pinching member of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 11 is a left side view of the upper pinching member and the lower pinching member of the universal fixing metal fitting for an operating table according to the present invention;
• FIG. 12 is a right side view of the upper pinching member and the lower pinching member of the universal fixing metal fitting for an operating table according to the present invention; and
• FIG. 13 is a diagram showing the state of use of the universal fixing metal fitting for an operating table according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
• A fixing metal fitting for an operating table according to the present invention will be described in detail with reference to the accompanying drawings.
• FIGS. 1,2,3, and4 are a perspective view, a front view, a plan view, a left side view, and a right side view, respectively, of a universalfixing metal fitting1 for an operating table according to the present invention. As shown inFIGS. 1 to 5, the universalfixing metal fitting1 for an operating table according to the present invention includes abase member2, anupper pinching member3, alower pinching member4, and afastening portion5. Thebase member2 includes aflat portion2a,afirst attachment leg2bformed perpendicularly to and continuously with theflat portion2a,and asecond attachment leg2cformed perpendicularly to and continuously with theflat portion2a.Theupper pinching member3 includes a connectingportion3a,afirst pinching portion3bformed on one end of the connectingportion3a,and asecond pinching portion3cformed on the other end of the connectingportion3a.
• Thelower pinching member4 includes a connectingportion4a,athird pinching portion4bformed on one end of the connectingportion4a,and afourth pinching portion4cformed on the other end of the connectingportion4a.Thefastening portion5 has as its main components a screw-engaging shaft5bhaving apressing member5eattached to its tip and ahead portion5aprovided on one side thereof, and includes ahandle5cpassed through a through hole bored in thehead portion5aandspherical stoppers5dprovided on opposite ends thereof.
• As shown inFIG. 1, a screw-engaging hole2kis bored inflat portion2aof thebase member2 generally in the form of a rectangular block at a center of the same. The screw-engaging shaft5bis screw-engaged with this screw-engaginghole2k.
• A rectangular throughhole2fis bored in a central portion of thefirst attachment leg2bformed perpendicularly to and continuously with theflat portion2aof thebase member2.
• A rectangular throughhole2gis also bored in a central portion of thesecond attachment leg2cformed perpendicularly to and continuously with theflat portion2a.
• As shown inFIG. 3, at positions closer to theflat portion2aof thebase member2 in the connectingportion3aconnecting thefirst pinching portion3band thesecond pinching portion3cof theupper pinching member3, L-cuts3dare respectively formed on thefirst pinching portion3bside and thesecond pinching portion3cside, and a V-cut3kis formed between the L-cuts3don the opposite sides. Thefirst pinching portion3bis formed perpendicularly to and continuously with one end of the connectingportion3a,while thesecond pinching portion3cis formed perpendicularly to and continuously with the other end of the connectingportion3a.Thefirst pinching portion3band thesecond pinching portion3care equal in shape and size to each other.
• As shown inFIGS. 4 and 5, thelower pinching member4 includes a connectingportion4ain which L-cuts4dare formed, athird pinching portion4bformed perpendicularly to and continuously with one end of the connectingportion4a,and afourth pinching portion4cformed perpendicularly to and continuously with the other end of the connectingportion4a.At positions closer to theflat portion2aof thebase member2 in the connectingportion4aconnecting thethird pinching portion4band thefourth pinching portion4cof thelower pinching member4, L-cuts4dare respectively formed on thethird pinching portion4bside and thefourth pinching portion4cside, and a V-cut4kis formed between the L-cuts4don the opposite sides.Reference characters3f,3g,4f,and4gdenote inwardly projecting projections of thefirst pinching portion3b,thesecond pinching portion3c,thethird pinching portion4band thefourth pinching portion4c.
• Thethird pinching portion4bis formed perpendicularly to and continuously with one end of the connectingportion4a,while thefourth pinching portion4cis formed perpendicularly to and continuously with the other end of the connectingportion4a.Thethird pinching portion4band thefourth pinching portion4care equal in shape and size to each other. Also, theupper pinching member3 and thelower pinching member4 are equal in shape and size to each other. Details of the members will be described with reference toFIGS. 6 to 12 before describing the states of coupling between the members.FIG. 6 is a front view of thebase member2 constituting the universal fixing metal fitting for an operating table according to the present invention;FIG. 7 a plan view of thebase member2; andFIG. 8 a left side view of thebase member2.
• As shown inFIGS. 6 to 8, thebase member2 is a member provided as a basis for the universalfixing metal fitting1 for an operating table according to the present invention. As shown inFIG. 6, thefirst attachment leg2band thesecond attachment leg2care formed perpendicularly to and continuously with the opposite ends of theflat portion2aof thebase member2, and the throughholes2fand2gare formed in central portions of these attachment legs.
• As shown inFIG. 7,slant portions2hand2iare provided at intermediate positions in thefirst attachment leg2band thesecond attachment leg2c,and anattachment portion2dand anattachment portion2eprovided on the left hand sides of theslant portions2hand2icontinuously with theslant portions2hand2iare formed so that their thickness is about half that of the portions on the right hand sides. Theslant portions2hand2iare provided on the outer surface sides of theattachment portion2dand theattachment portion2e.Accordingly, the inner wall surfaces of thefirst attachment leg2band thesecond attachment leg2care formed as flat surfaces.
• As shown inFIGS. 6 and 7,attachment holes21 andpin insertion holes2mare bored in upper and lower portions in theattachment portion2dof thefirst attachment leg2band theattachment portion2eof thesecond attachment leg2c.The fourpin insertion holes2min total are small holes, while the four attachment holes2lin total are large holes.
• As shown inFIGS. 6 to 8, theslant portions2hare formed in two places in thefirst attachment leg2b, and theslant portions2iare formed in two places in thesecond attachment leg2c.Theslant portions2hand2islant toward centers of surfaces of theattachment portion2dand theattachment portion2eshown inFIG. 6.
• As shown inFIGS. 9 to 12, theupper pinching member3 and thelower pinching member4 are equal in shape and size to each other. Therefore, description will be made below mainly of theupper pinching member3 and description will then be made of thelower pinching member4.
• Referring toFIG. 10, theupper pinching member3 includes the connectingportion3a,thefirst pinching portion3bformed continuously with one end of the connectingportion3a,and thesecond pinching portion3cformed continuously with the other end of the connectingportion3a.
• As shown inFIG. 9, a left end of thefirst pinching portion3bis formed generally into a bird's beak shape; an upper curved portion3lwhich curves largely toward anextreme end3qis formed in an upper left position; aslant portion3mis formed continuously from the upper curved portion3lto the right; and an upperflat portion3nis formed continuously from theslant portion3mto the right.
• A U-cut3his provided on the right hand side of theextreme end3qof thefirst pinching portion3b,and a lowerflat portion3pis formed continuously from the U-cut3hto the right. A lower curved portion3ois formed continuously from the lowerflat portion3pto the right. Acoupling hole3iis bored on the right hand side of the U-cut3h,and apin insertion hole3jis bored in the vicinity of the upper curved portion3l.
• Theupper pinching member3 is of such a structure that the connectingportion3a,thefirst pinching portion3band thesecond pinching portion3care not provided as separate members but formed integrally with each other.
• As shown inFIG. 10, arectangular recess3eis formed on the left hand side of the connectingportion3aconnecting thefirst pinching portion3band thesecond pinching portion3con the opposite ends.
• The L-cuts3dare formed on the right hand side of the connectingportion3ain two places at opposed positions such that anattachment rod10 having a square or rectangular section can be firmly fixed so as not to swing. The V-cut3kis formed between the L-cut3dand the L-cut3din the two places to enable fixation of a cylindrical member.
• Each of theupper pinching member3 and thelower pinching member4 has is generally H-shaped.
• As shown inFIGS. 11 and 12, the left and right side surfaces of theupper pinching member3 constitute a generally U-shaped configuration.
• As shown inFIGS. 9 to 12, thelower pinching member4 includes the connectingportion4a,thethird pinching portion4bformed continuously with the right end of the connectingportion4a,and thefourth pinching portion4cformed continuously with the left end of the connectingportion4a.
• As shown inFIG. 9, thethird pinching portion4bis generally of a bird's beak shape; an uppercurved portion41 which curves largely toward anextreme end4qis formed in an upper left position; aslant portion4mis formed continuously from the upper curved portion4lto the right; and an upperflat portion4nis formed continuously from theslant portion4mto the right.
• A U-cut4his provided on the right hand side of theextreme end4qof thethird pinching portion4b,and a lowerflat portion4pis formed continuously from the U-cut4hto the right. A lower curved portion4ois formed continuously from the lowerflat portion4pto the right. Acoupling hole4iis bored on the right hand side of the U-cut4h,and apin insertion hole4jis bored in the vicinity of the upper curved portion4l.
• Thelower pinching member4 is of such a structure that the connectingportion4a,thethird pinching portion4band thefourth pinching portion4care not provided as separate members but formed integrally with each other.
• As shown inFIG. 10, arectangular recess4eis formed on the left hand side of the connectingportion4aformed continuously with thethird pinching portion4band thefourth pinching portion4con the opposite ends.
• The L-cuts4dare formed on the right hand side of the connectingportion4ain two places at opposed positions such that anattachment rod10 having a square or rectangular section can be firmly fixed so as not to swing. The V-cut4kis formed between the L-cut4dand the L-cut4din the two places to enable fixation of a cylindrical member.
• Each of theupper pinching member3 and thelower pinching member4 has is generally H-shaped.
• Description will be made below of how thebase member2, theupper pinching member3, thelower pinching member4 and thefastening portion5 are coupled to form the universalfixing metal fitting1 for an operating table according to the present invention.
• As shown inFIGS. 1 to 5, the screw-engagingshaft5bhaving the pressingmember5eattached to its tip is screw-engaged with the screw-engaginghole2kbored in theflat portion2aof thebase member2 at a center of the same.
• The screw-engagingshaft5bhas the shape of a male screw. A female screw which meshes with the male screw on the screw-engagingshaft5bis formed in the inner wall surface of the screw-engaginghole2k.
• Thepressing member5emay not be attached to the tip of the screw-engagingshaft5b.The material and shape of thepressing member5eare not limited to particular ones. Thepressing member5emay be formed by changing the material and shape as required.
• Aninsertion hole5fis formed in thehead portion5aattached to the screw-engagingshaft5b.Thehandle5chaving thespherical stoppers5dattached to its opposite ends is loosely inserted in theinsertion hole5fso as to be slidable in one direction. Since thestoppers5dare attached to the opposite ends of thehandle5c,thehandle5cdoes not come off theinsertion hole5fof thehead portion5a.
• As shown inFIG. 2, theupper pinching member3 and thelower pinching member4 are turnably attached to thefirst attachment leg2band thesecond attachment leg2cof thebase member2 by four retainingmembers7.
• That is, theupper pinching member3 is turnably attached to thebase member2 by using the retainingmembers7 in the attachment holes2lprovided in theattachment portion2dof thefirst attachment leg2band theattachment portion2eof thesecond attachment leg2c(seeFIG. 6) and thecoupling hole3iof thefirst pinching portion3b(seeFIG. 9).
• Similarly, thelower pinching member4 is turnably attached to thebase member2 by using the retainingmembers7 in the attachment holes2lprovided in theattachment portion2dof thefirst attachment leg2band theattachment portion2eof thesecond attachment leg2c(seeFIG. 7) and thecoupling hole4iof thethird pinching portion4b(seeFIG. 9).
• When thefirst pinching portion3bof theupper pinching member3 and theattachment portion2dof thefirst attachment leg2bare coupled to each other by the retainingmember7, the retainingmember7 is inserted in acoil spring6 and thecoil spring6 is placed between thefirst pinching portion3band theattachment portion2dof thefirst attachment leg2b.
• One end of thecoil spring6 is engaged with theslant portion2hformed on thefirst attachment leg2b, while the other end of thecoil spring6 is engaged with aspring stopper9 mounted in thepin insertion hole3jof thefirst pinching portion3b.
• The range of turning of thefirst pinching portion3bis limited by apin8 mounted in thepin insertion hole2mbored in theattachment portion2bof thefirst attachment leg2b.
• As shown inFIG. 2, when theupper pinching member3 is turned clockwise on the retainingmember7, thespring stopper9 inserted in thepin insertion hole3jand theslant portion2hare brought closer to each other and the opposite ends of the coil spring are also brought closer to each other. A counterclockwise torque is then produced on theupper pinching member3 by the restoring force of thecoil spring6 acting to return to the original state. Also, when thesecond pinching portion3cof theupper pinching member3 and theattachment portion2eof thesecond attachment leg2care coupled to each other by the retainingmember7, the retainingmember7 is inserted in acoil spring6 and thecoil spring6 is placed between thesecond pinching portion3cand theattachment portion2eof thesecond attachment leg2c.
• One end of thecoil spring6 is engaged with theslant portion2iformed on thesecond attachment leg2c, while the other end of thecoil spring6 is engaged with aspring stopper9 mounted in thepin insertion hole3jof thesecond pinching portion3c.
• At this time, turning of thesecond pinching portion3cis limited by apin8 mounted in thepin insertion hole2mprovided in theattachment portion2eof thesecond attachment leg2c.
• As shown inFIGS. 1 to 7, when thethird pinching portion4bof thelower pinching member4 and theattachment portion2eof thesecond attachment leg2care coupled to each other by the retainingmember7, the retainingmember7 is inserted in acoil spring6 and thecoil spring6 is placed between thethird pinching portion4band theattachment portion2eof thesecond attachment leg2c.
• One end of thecoil spring6 is engaged with theslant portion2iformed on thesecond attachment leg2c, while the other end of thecoil spring6 is engaged with aspring stopper9 mounted in thepin insertion hole4jof thethird pinching portion4b.
• The range of turning of the U-cut4hof thethird pinching portion4bis limited by apin8 mounted in thepin insertion hole2mbored in theattachment portion2eof thesecond attachment leg2c.
• When thefourth pinching portion4cof thelower pinching member4 and theattachment portion2dare coupled to each other by the retainingmember7, the retainingmember7 is inserted in acoil spring6 and thecoil spring6 is placed between thefourth pinching portion4cand theattachment portion2d.
• One end of thecoil spring6 is engaged with theslant portion2hformed on theattachment portion2dof thefirst attachment leg2b,while the other end of thecoil spring6 is engaged with aspring stopper9 mounted in thepin insertion hole4jof thefourth pinching portion4c.
• The range of turning of the U-cut4hof thefourth pinching portion4cis limited by apin8 mounted in thepin insertion hole2mbored in theattachment portion2dof thefirst attachment leg2b.
• Accordingly, as shown inFIG. 2, when thelower pinching member4 is turned counterclockwise on the retainingmember7, thespring stopper9 inserted in thepin insertion hole4jand theslant portion2hare brought closer to each other and the opposite ends of thecoil spring6 are also brought closer to each other. A clockwise torque is then produced on thelower pinching member4 by the restoring force of thecoil spring6 acting to return to the original state.
• Thus, when theupper pinching member3 and thelower pinching member4 are coupled to thebase member2, thecoil springs6 are disposed to produce pinching force between theupper pinching member3 and thelower pinching member4, thereby enabling mount of the universalfixing metal fitting1 for an operating table on anaccessory attachment rail11bby firmly pinching theaccessory attachment rail11b.
• In the present invention, when thefirst pinching portion3band thesecond pinching portion3cof theupper pinching member3 and theattachment portion2dof thefirst attachment leg2band theattachment portion2eof thesecond attachment leg2care coupled to each other, twocoil springs6 in total are used each in a one-to-one relationship with the coupling position.
• Also, when thethird pinching portion4band thefourth pinching portion4cof thelower pinching member4 and theattachment portion2dof thefirst attachment leg2band theattachment portion2eof thesecond attachment leg2care coupled to each other, twocoil springs6 in total are used each in a one-to-one relationship with the coupling position.
• Thecoil spring6 may be used for coupling of only one of thefirst pinching portion3band thesecond pinching portion3c.
• Also, thecoil spring6 disposed and used at the time of coupling of thethird pinching portion4band thefourth pinching portion4cof thelower pinching member4 may be disposed and used at both or only one of thethird pinching portion4band thefourth pinching portion4c.
• That is, when thefirst pinching portion3band thesecond pinching portion3cof theupper pinching member3 and thethird pinching portion4band thefourth pinching portion4cof thelower pinching member4 are coupled to thefirst attachment leg2band thesecond attachment leg2c,fourcoil springs6 may be used or onecoil spring6 used on theupper pinching member3 side and anothercoil spring6 used on thelower pinching member4 side, twocoil springs6 in total, may be disposed and used.
• FIG. 13 is a diagram showing the state of use of the universal fixing metal fitting for an operating table according to the present invention. At the time of mounting on an operating table11, the universalfixing metal fitting1 for an operating table according to the present invention is first attached to anaccessory attachment rail11bprovided parallel to an operating table side surface11a.At the time of mounting, the U-cuts3hand4hof theupper pinching member3 and thelower pinching member4 of the universalfixing metal fitting1 for the operating table are opened outwardly and theaccessory attachment rail11bis pinched therebetween for attachment. At this time, even after the external force applied to the universalfixing metal fitting1 for the operating table has been removed, the fixingmetal fitting1 is fixed on theaccessory attachment rail11bby the torque produced on thespring stoppers9 so as not to fall from therail11b.
• A member to be mounted is inserted in thespace2jin thebase member2. The inserted member may have the shape of a plate or a round rod. Anattachment rod10 in the form of a rectangular plate is illustrated inFIG. 13 by way of example. Description will be made below of a case of using theattachment rod10. Side surfaces of theattachment rods10 are fitted to the L-cuts3dand4dformed in the connectingportions3aand4aor to the V-cuts3kand4kformed inwardly relative to the L-cuts3dand4d,and thefastening portion5 is rotated for fastening by forcing the screw-engagingshaft5bin the direction of the fixing member.
• Theattachment rod10 is thereby caused to push theupper pinching member3 and thelower pinching member4 to produce a torque about the retainingmembers7 such that theupper pinching member3 and thelower pinching member4 turn in such directions as to pinch theaccessory attachment rail11b.
• In this way, theattachment rod10 of the member to be mounted on the operating table11 is firmly fixed on theaccessory attachment rail11bby the universalfixing metal fitting1 for the operating table.
• In the example of use shown inFIG. 13, the appliance to be mounted on the operating table11 is a trunk-fixingpad10d.The trunk-fixingpad10dis connected to acoupling part10aby a connectingmember10b,and thecoupling part10ais attached to the upper end of theattachment rod10 and fixed by an adjustingpart10c.
• By fastening with thefastening portion5, the appliance to be mounted is fixed on thebase member2 and the pinching force of theupper pinching member3. Simultaneously, thelower pinching member4 is increased by fastening with thefastening portion5.
• The universalfixing metal fitting1 for the operating table is capable of being firmly fixed on theaccessory attachment rail11bof the operating table11 and enabling the appliance to be mounted on the universalfixing metal fitting1 for the operating table to be firmly fixed simultaneously.
INDUSTRIAL APPLICABILITY
• The universalfixing metal fitting1 for an operating table according to the present invention has advantages described below.
• First, fixing between the universal fixing metal fitting for an operating table and an accessory attachment rail and fixing between the universal fixing metal fitting for an operating table and an appliance to be fixed can be simultaneously performed. Thus, the universal fixing metal fitting can be easily mounted in a shorter time and can be firmly fixed.
• Second, although a case where appliances having coupling portions varying in shape and state are to be fixed is conceivable, the universal fixing metal fitting for an operating table according to the present invention is capable of being adapted to different shapes such as the shape of a member having a square or rectangular section and the shape of a round rod and, therefore, capable of being used in various circumstances including changing the appliance to be fixed, and is particularly advantageous on a medical scene where safety is required and various appliances are used.
• Third, while there has been a need to use different fixing metal fittings in a case where there are operating table accessory attachment rails differing in shape as between Japan and Europe, the present invention is adaptable to rails of any shape and can therefore be used even when the rail shape is changed.
• Fourth, while an appliance to be fixed is ordinarily placed under a sterilized clean sheet with which a subject on an operating table is covered, or placed so as not to contact the sheet, the fixing metal fitting can be mounted on a rail even in a state where the rail is covered with such a sheet to become thicker relative to the normal state, because the fixing metal fitting can be sterilized by steam at a high pressure and can be used regardless of the rail shape.

Claims (2)

1. A universal fixing metal fitting for an operating table characterized by comprising a base member in which a first attachment leg having an attachment portion and including a slant portion formed thereon and a second attachment leg having an attachment portion and including a slant portion formed thereon are formed continuously with a flat portion having a screw-engaging hole formed at its center, an upper pinching member in which a first pinching portion is formed continuously with one end of a connecting portion having a V-cut at its center and L-cuts formed continuously with the V-cut, and in which a second pinching portion is formed continuously with the other end of the connecting portion, a lower pinching member in which a third pinching portion is formed continuously with one end of a connecting portion having a V-cut at its center and L-cuts formed continuously with the V-cut, and in which a fourth pinching portion is formed continuously with the other end of the connecting portion, and a fastening portion in which a handle having spherical stoppers provided on its opposite ends is loosely fitted in a through hole in a cylindrical head portion provided on one end of a screw-engaging shaft, the universal fixing metal fitting also characterized in that when the upper pinching member and the lower pinching member are coupled to the base member, coil springs are attached by being interposed between the first pinching portion and the attachment portion, between the second pinching portion and the attachment portion, between the third pinching portion and the attachment portion and between the fourth pinching portion and the attachment portion.

2. The universal fixing metal fitting for an operating table according toclaim 1, characterized in that a pressing member is attached to a tip of the screw-engaging shaft.

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