CN2317822Y - Split device for setting of fracture - Google Patents

Abstract

The utility model discloses an osteosynthesis plate set, which is a bond plate made of shape memory alloys which is suitable for rod or tubular skeletons (such as arm bones, ribs, shanks, etc.). In the bond plate, an encircled type fixed jaw is separated from a main bone plate. The utility model is made from the shape memory alloy materials and is provided with at least one main bone plate and at least one encircled type fixed jaw. The main bone plate and the encircled type fixed jaw are two components which are mutually independent and can match with each other. The main bone plate is provided with a device which is fixed with the skeleton, and the encircled type fixed jaw is an opening annular component. When the utility model conducts the implantation and extraction, a small operation opening needs to be incised.

Description

Separate type synthetism utensil

This utility model relates to a kind of synthetism utensil, a kind ofly exactly makes with marmem, is applicable to bar, tubulose skeleton (as the skeleton at positions such as arm part, chest or shank), and encircling type fixed claw and synthetism mainboard are arranged on it.

The blade plate made from marmem that is applicable to bar, tubular bone has a plurality of patent disclosures in the Chinese patent communique, its basic configuration of synthetism utensil of the prior art mostly is herring-bone form or similar herring-bone form, as Chinese utility model patent 91108519.X, disclosed synthetism utensils such as 91232887.8 and 90211525.1.The main deficiency of prior art is in use, the obvolvent position of fixed claw can only be positioned at the below (being the back side of skeleton under the scalpel edge) of skeleton, when the taking-up synthetism utensil of enforcement is performed the operation again in the operation of implantation synthetism utensil and after the skeleton healing like this, all need cut a bigger scalpel edge at patient's operative site, but also need do peeling off of large-area skeleton and the outer tissue of skeleton, could realize the implantation of bone fracture device like this, or the obvolvent position of utensil is exposed, to open the blade plate fixed claw of obvolvent, take out blade plate.Therefore the use of prior art makes on the one hand and implants and take out the operation more complicated, and the opposing party has also increased patient's the misery and the difficulty of wound healing.

The purpose of this utility model provides a kind of prior art deficiency that overcomes, and can reduce to implant and take out the complexity of operation, reduces patient's the misery and the difficulty of wound healing.

The purpose of this utility model realizes by following measure: make with shape memory alloy material and have a synthetism mainboard and have an encircling type fixed claw at least at least, and synthetism mainboard and encircling type fixed claw are not divided into separate two members that can cooperatively interact.Synthetism mainboard of the present utility model is provided with and the skeleton stationary device; And the encircling type fixed claw is an opening annular component.This utility model only need be opened a smaller scalpel edge when implanting then will be above refrigerative synthetism mainboard places knochenbruch under the surgical openings, with its with fixed by the synthetism arm, to draw back through the cyclic encircling type fixed claw of cooled opening again, be through at outside the skeleton, being turned back inwards in fixed claw two opening part ends makes it to place synthetism mainboard place can finish implant surgery again, after sewing up, the encircling type fixed claw recovers its original-shape under the effect of patient temperature, simultaneously knochenbruch and synthetism mainboard are held tightly, knochenbruch and synthetism mainboard is tightly fixing, realize fixation.In knochenbruch healing back, only need open a smaller scalpel edge again, and then the fixed claw that will be located immediately under the scalpel edge cools off, and with it from the opening part disassemble, its opening two ends and synthetism mainboard are separated, an end of fixed claw in the clamping of reuse operating theater instruments, extract fixed claw and taking-up out along the top of skeleton, after taking out all fixed claws, open the fixture between skeleton and synthetism mainboard again, just can take out the synthetism mainboard.Obviously, no longer need open a bigger scalpel edge to the bone place behind employing this utility model, also not need to implement large tracts of land of the prior art again and peeled off the patient.

Set and skeleton stationary device can be the L shaped nail leg structures that is positioned at synthetism mainboard two ends on the synthetism mainboard of the present utility model, also can be to be used for the hole of matching with nail, to realize fixing between blade plate and skeleton, overcome blade plate with by relative slip and displacement between the synthetism arm.When the structure that adopts the former should be inserted L shaped nail foot in the hole that gets out in advance when implementing operation on skeleton, and insert in the hole that gets out in advance on the skeleton when the hole that the structure that adopts the latter should be passed nail the synthetism mainboard.In a kind of structure of L sprig foot, in implant surgery, need under cooling condition, to follow closely foot earlier and draw back before particularly adopting, when the synthetism mainboard resiles shape, can produce certain longitudinal pressure like this, can avoid becoming flexible between knochenbruch and blade plate effectively.

On synthetism mainboard of the present utility model, be provided with the groove that matches with fixed claw, during operation fixed claw folded into groove and just can prevent from relative displacement between synthetism mainboard and fixed claw to have strengthened the fixed effect of fixed claw the synthetism mainboard.

On synthetism mainboard of the present utility model, can also be provided with at least one bending segment again, in implant surgery, can press preceding method again and implement implant surgery earlier with more stretching through the bending segment of refrigerative synthetism mainboard.Being fixed on the synthetism mainboard except that fixed claw after patient temperature acts on the synthetism utensil, the synthetism mainboard also recovers original shape, has produced along the vertical bigger additonal pressure of knochenbruch, has further improved fixed effect.Be when in stationary device between synthetism mainboard and skeleton is this structure in the hole of matching with nail, also adopting the structure that adds at least one bending segment on it especially, because mainboard can produce additional longitudinal pressure, equally also can avoid becoming flexible between knochenbruch and blade plate

This practical advantage is: can reduce scalpel edge when adopting this utility model, reduce patient's misery, accelerating wound healing; Can simplify the implant surgery process of synthetism utensil and take out operation process; Can produce bigger longitudinal pressure, knochenbruch is tightly combined, obviously improve fixed effect; Area of the present utility model is less than the area of the various synthetism utensils of prior art, therefore adopts this utility model can make the outer tissue of the injury of the bone and bone that more the contact arranged, and is more conducive to the healing of knochenbruch.

Accompanying drawing of the present utility model is a kind of most preferred embodiment, and wherein Fig. 1 is the front view of the synthetism mainboard among the embodiment; Fig. 2 is the vertical view of synthetism mainboard; Fig. 3 is the front view of ringwise fixed claw; Fig. 4 is the side view of fixed claw; Fig. 5 and Fig. 6 are present embodiment user mode sketch maps, and wherein Fig. 5 is equivalent to inwardly look at the finding situation straight from scalpel edge, and Fig. 6 is equivalent to from scalpel edge parallel direction finding situation, i.e. the vertical view of Fig. 5, and front A is edge of a knife position among Fig. 6.

In the embodiment that accompanying drawing provides: synthetism mainboard (1), see Fig. 1 and Fig. 2, it is one section straight flake shape memorial alloy, the groove (2) that matches with the encircling type fixed claw is arranged on it, the width of groove (2) is a bit larger tham the width of fixed claw, be provided with four grooves (2) in the present embodiment, a bending segment (3) arranged, the L shaped nail foot (4) of downward bending is respectively arranged at the two ends of mainboard (1) at the middle part of synthetism mainboard (1); Encircling type fixed claw (5) is an annular component, has a breach (6) on it.

The embodiment that accompanying drawing provides in use, earlier synthetism mainboard and fixed claw are inserted in the cooling medium and cool off, L shaped nail foot (4) with mainboard (1) outwards draws back then, it is more stretching slightly to bend the section of tearing open (3), to lead (1) again and place knochenbruch place through reduction, L shaped nail foot (4) is inserted in the hole that gets out on the skeleton, again fixed claw (5) is drawn back, one of fixed claw is passed along the skeleton periphery, finally make skeleton between the fixed claw two ends, two ends with fixed claw bends to synthetism mainboard Y-direction respectively then, and make the termination of rolling over place mainboard groove (2), this moment from the situation that combines of the being seen blade plate of scalpel edge and fixed claw and skeleton referring to accompanying drawing 5, the being seen synthetism mainboard in its side, the situation that combines of fixed claw and knochenbruch is sewed up the edge of a knife then referring to accompanying drawing 6.After patient's body temperature raise synthetism utensil temperature, shape promptly took place and recovers in synthetism mainboard and fixed claw, simultaneously the knochenbruch place is tightly combined.After the knochenbruch healing, again from the implantation surgery wound site other do one with the suitable operative incision of synthetism mainboard size, with apparatus that the fixed claw termination that folds back is stretching after exposing the synthetism mainboard, and of hauling fixed claw outwards pulls out it along skeleton, so just can take out fixed claw, again L shaped nail foot is tripped out from skeleton, can take out the synthetism mainboard like this.

Claims (5)

1, a kind of synthetism utensil made from shape memory alloy material, at least one synthetism mainboard and at least one encircling type fixed claw are wherein arranged, feature of the present utility model is that described synthetism mainboard and encircling type fixed claw are not divided into separate member, wherein be provided with and the skeleton stationary device on described synthetism mainboard, described encircling type fixed claw is an opening annular component.

2, synthetism utensil according to claim 1 is characterized in that be provided with is the nail foot of the L shaped structure at synthetism mainboard two ends with the skeleton stationary device on the synthetism mainboard.

3, synthetism utensil according to claim 1 is characterized in that be provided with is to be useful on the hole of passing nail on the synthetism mainboard with the skeleton stationary device on the synthetism mainboard.

4, according to claim 1,2 or 3 described synthetism utensils, it is characterized in that the synthetism mainboard is provided with the groove that matches with fixed claw.

5, synthetism utensil according to claim 4 is characterized in that at least one bending segment is arranged on the synthetism mainboard.

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