In order to lock the snap close of titanium cableTechnical field
The present invention relates to medical instruments field, particularly relate to the snap close of locking titanium cable.
Background technology
Titanium alloy hawser---be called for short titanium cable general at the Application comparison of field of orthopaedics, when human limb position fracture, the situation such as bone splits time, usually use titanium cable to tie up skeleton fixing, then with flat joint, two of titanium cable hawser heads are locked, complete tying up of skeleton fixing.In actual operation operation, first titanium cable is worn the position around needing to tie up, again two hawser heads are all located in a locking through hole on flat joint, then with bitt compressor tool, hawser is tightened up, finally extrude flat joint with Press Plier, two hawser heads are locked in flat joint, complete the fastening of titanium cable and locking.There is following shortcoming in above-mentioned traditional flat joint: one, is only provided with a locking through hole in flat joint, time fastening, two hawser heads of titanium cable are all located in this locking through hole, this fastening means need make flat joint and locking through hole produce larger deformation could by two hawser head lockings, so not only need operator to have larger strength, and the insecure accident of locking easily occurs.Two, owing to needing in locking process to make flat joint and locking through hole produce larger deformation, therefore steel material usually can only be selected to make flat joint, and the pure titanium material with special nature can not be selected to make flat joint, this is because pure titanium material occurs compared with easy to crack during large deformation.But the flat joint of steel is stayed in human body and patient can be made not carry out NMR (Nuclear Magnetic Resonance)-imaging, so just makes the titanium cable of function admirable be difficult to be advantageously applied to the recovery carrying out breastbone in open chest surgery fastening.Three, the upper and lower surface of flat joint is all smooth plane, on the one hand, such structure makes to need to leave between flat joint and skeleton when extruding flat joint with Press Plier to be convenient to the gap that Press Plier binding clip carries out stitching operation, usually this gap is called crimping gap, complete after locking work removes Press Plier, the existence in this crimping gap can make the generation of titanium cable lax, thus affects surgical effect; On the other hand, easily there is slippage in the flat joint having flat surface upon completing the procedure, this also can affect surgical effect on skeleton.
Summary of the invention
The technical problem of solution required for the present invention is: provide a kind of and can use the making of pure titanium material, reliable lock does not loosen, the postoperative snap close in order to lock titanium cable that slippage can not occur.
For solving the problem, the technical solution used in the present invention is: in order to lock the snap close of titanium cable, comprise: the snap close body of pure titanium material, the locking through hole of two longitudinal direction through snap close body rear and front ends is arranged at intervals with in snap close body, the arcwall face that the lower surface of snap close body caves inward for ease of fitting with skeleton, be positioned at the upper of the snap close body in the middle of two locking through holes, at least one of lower surface is provided with longitudinal groove on the surface, groove can accept the deformation of the snap close body after being extruded, the lower surface of snap close body is provided with the fixed claw that at least two protrude from snap close body lower surface, fixed claw is identical with snap close body material, fixed claw make snap close body with leave between skeleton that the binding clip being convenient to Press Plier carries out stitching operation crimp gap.
Further, the aforesaid snap close in order to lock titanium cable, wherein: on the upper and lower surface being positioned at the snap close body in the middle of two locking through holes, be respectively arranged with a groove.
Further, the aforesaid snap close in order to lock titanium cable, wherein: be respectively arranged with the convex shoulder protruding from snap close body arranged on left and right sides in the rear and front end of snap close body, convex shoulder is identical with the material of snap close body.
Further, the aforesaid snap close in order to lock titanium cable, wherein: on four angles of the bottom of rear and front end convex shoulder, be respectively arranged with a fixed claw, and fixed claw and convex shoulder and this body by integral forming of snap close.
The invention has the beneficial effects as follows: the snap close of the said structure using pure titanium material to make, in actual operation operation, only need less deformation just titanium cable reliably can be locked and not easily loosen, again due to do not exist in operating process crimping gap therefore complete locking after titanium cable can not produce lax, carry out nuclear magnetic resonance check after so just facilitating operation in patients, and postoperatively slippage can not occur.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the snap close in order to lock titanium cable of the present invention.
Fig. 2 be Fig. 1 overlook direction schematic diagram.
Fig. 3 is the left apparent direction schematic diagram of Fig. 1.
Fig. 4 is the structural representation of A-A section in Fig. 2.
Fig. 5 is the perspective view shown in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, technical solutions according to the invention are described in further detail.
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5, in order to lock the snap close of titanium cable, comprise: the snap close body 1 of pure titanium material, the locking through hole 4 of two longitudinal direction through snap close body 1 rear and front ends is arranged at intervals with in snap close body 1, the arcwall face that the lower surface 2 of snap close body 1 caves inward for ease of fitting with skeleton, be positioned at the upper of the snap close body 1 in the middle of two locking through holes 4, lower surface is respectively arranged with the groove 7 of a longitudinal direction, groove 7 can accept the deformation of the snap close body 1 after being extruded, be respectively arranged with in the rear and front end of snap close body 1 and protrude from snap close body 1 left side, the convex shoulder 8 of right both sides, convex shoulder 8 is identical with the material of snap close body 1, four angles of the bottom of rear and front end convex shoulder 8 are respectively arranged with a fixed claw 5 identical with snap close body 1 material, and fixed claw 5 and convex shoulder 8 one-body molded with snap close body 1, fixed claw 5 make snap close body 1 with leave between skeleton that the binding clip being convenient to Press Plier carries out stitching operation crimp gap.
The using method of snap close of the present invention is as follows: be first located in by the titanium cable of one end band bulb in a locking through hole 4 in snap close body 1, bulb is greater than locking through hole and can not passes locking through hole, then titanium cable is worn the skeletal sites around needing to tie up, again another hawser head of titanium cable is located in another locking through hole in snap close body, then with bitt compressor tool, hawser is tightened up, finally with a left side for Press Plier extruding snap close body, right both sides, make snap close body generation deformation, two hawser heads are locked in snap close body, complete the fastening of titanium cable and locking.
Fixed claw ensure that snap close body with leave between skeleton that the binding clip being convenient to Press Plier carries out stitching operation crimp gap, make the fixed claw when carrying out crimping work to be firmly close to and to grab and be attached to bone surface, namely during crimping, snap close body crimps gap with not existing between skeleton, complete after locking work removes Press Plier like this, titanium cable can not produce lax, and fixed claw tightly can be grabbed and is attached to bone surface, and postoperative snap close can not produce slippage; In addition, two hawser heads can be located in two locking through holes on snap close body respectively, and the groove that can accept to crimp deformation is provided with in the upper and lower surface of snap close body, such one side only needs to make snap close body that less deformation occur can lock titanium cable, make on the other hand pure titanium material latch in deformation time not easily there is the accident that ftractures, locking is more reliably not easily loosened; Moreover the snap close using pure titanium material to make, can accept nuclear magnetic resonance check after making operation in patients, so just the titanium cable of function admirable can be advantageously applied to the recovery carrying out breastbone in open chest surgery fastening, greatly widen the range of application of titanium cable.