CN206867270U - The elastic intramedullary needle and its fixator of a kind of ulnar fracture - Google Patents

Abstract

The utility model discloses a kind of elastic intramedullary needle and its fixator for treating ulnar fracture, including main pin in marrow, main pin includes the near-end set gradually in the marrow, distal end and distal end, the near-end is cylinder, the distal end is triangular prism shaped, the distal end is conehead structure, the length of the distal end is 3cm, the first lock slots and the second lock slots laterally set are sequentially provided with the incline of the distal end, first lock slots and the second lock slots cross section are semicircle, first lock slots and second lock slots coordinate with the first purl and the second purl so that the first lock slots of main pin and the second lock slots position in marrow described in pairing respectively.The utility model elastic intramedullary needle in operation can be fixed to ulnar fracture exactitude position, and the first purl and the second purl is accurately squeezed into the first lock slots and the second lock slots, smoothly complete operation, it is ensured that fixed effect, realize minimally-invasive treatment.

Description

The elastic intramedullary needle and its fixator of a kind of ulnar fracture

Technical field

It the utility model is related to technical field of medical instruments, and in particular to the elastic intramedullary needle of a kind of ulnar fracture and its solid Determine device.

Background technology

At present, after ulnar fracture, its normal anatomical relationship is destroyed, Displaced fractures, generally need to make it by operation Replacement and fixation makes rapid healing of fracture.At present, open reduction and Kirschner wire fixation treatment ulnar fracture is clinically commonly used.For ulnar fracture Fixation device mainly has dissection armor plate screw, exterior fixing rack etc. at present.Wherein, steel plate screw is fixed ulnar fracture first choice and made With, but the operation that steel plate screw fixes ulnar fracture has incision soft tissue scope big, needs to peel off muscle and periosteum in operation, So as to have impact on the blood circulation around fracture, the nutrition during knitting is reduced or blocked, often results in ulnar fracture The slow or generation nonunion of healing；Due to using steel plate screw fixation ulna fracture operation wound big, infection also add Incidence.Meanwhile steel plate screw fixes operation and also has the deficiencies of long complex operation, operating time, increase patient's pain.In view of The deficiency for the treatment of ulnar fracture fixture, in the market are badly in need of a kind of minimally-invasive treatment, ulna bone easy to operate, fixation at present Roll over elastic intramedullary needle and fixing device.

Utility model content

The utility model is intended at least solve one of the problems of the prior art.

The purpose of this utility model is the elastic intramedullary needle and its fixator for proposing a kind of ulnar fracture, the utility model Have the advantages that minimally-invasive treatment, easy to operate, fixation, union are fast, according to the mechanics principle of axial restraint, Neng Gouyou The good blood circulation of effect protection fracture end, it is a kind of inner fixing device of preferably treatment ulnar fracture.

It is main in the marrow according to the elastic intramedullary needle of the ulnar fracture of embodiment of the present utility model, including main pin in marrow Pin includes the near-end, distal end and the distal end that set gradually, and the near-end is cylinder, the distal end be it is triangular prism shaped, it is described Distal end is conehead structure, and the length of the distal end is 3cm, and first laterally set is sequentially provided with the incline of the distal end Lock slots and the second lock slots, first lock slots and the second lock slots cross section are semicircle, first lock Determine groove and second lock slots coordinate respectively with the first purl and the second purl with described in pairing in marrow main pin described first Lock slots and second lock slots positioning.

In addition, according to the elastic intramedullary needle of the ulnar fracture of the utility model above-described embodiment, can also have following attached Add technical characteristic：

According to one embodiment of the present utility model, the opening direction phase of first lock slots and second lock slots Together.

According to one embodiment of the present utility model, first lock slots are identical with the second lock slots diameter.

According to one embodiment of the present utility model, main needle set is flexible in the marrow, and main pin is flexible in the marrow The big I of radian is changed in inserting needle according to the degree of crook and fracture of fracture pulp cavity by doctor.

According to one embodiment of the present utility model, in addition to tail cap, the end of the near-end is provided with tail cap mating holes, institute State tail cap be fixedly connected with the tail cap mating holes so as to by the marrow main pin squeezing into marrow and will after union Main pin is extracted out of marrow in the marrow.

According to one embodiment of the present utility model, the tail cap is hexagon socket head cap screw, and the tail cap mating holes is provided with interior Screw thread, the tail cap are fixedly connected with the tail cap mating holes.

According to needle lock in the elastic intramarrow of the ulnar fracture of embodiment of the present utility model, include the elasticity of ulnar fracture Intramedullary needle, fixed support, travel(l)ing rest, bolt and purl guider, the fixed support are used to fix the ulnar fracture Elastic intramedullary needle and be provided with several screwed holes, the travel(l)ing rest is arranged above the fixed support and is provided with several Screwed hole, the purl guider is connected and is provided with the travel(l)ing rest to be locked with first purl and described second respectively The pilot hole that pin is connected, the bolt successively match somebody with somebody by the screwed hole with the travel(l)ing rest, the support bracket fastened screwed hole Connection is closed with the fixation travel(l)ing rest and the fixed support.

According to one embodiment of the present utility model, the purl guider includes purl fixed column and purl is oriented to Frame, the purl fixed column are connected with the fixed support, and the purl leading truck is connected and is provided with the purl fixed column Two pilot holes.

According to one embodiment of the present utility model, the fixed support is L-shaped, and described fixed support one end is vertically arranged And the elastic intramedullary needle of end and the ulnar fracture is connected, the other end is horizontally disposed and end is provided with several screwed holes.

According to one embodiment of the present utility model, the bolt is provided with two.

Relative to prior art, the beneficial effects of the utility model are：

By said structure design, needle set has following structure special in the elastic intramarrow of the ulnar fracture of the utility model design Point：Main needle set has certain elasticity in the marrow, because ulna has certain radian in itself, by using the flexible marrow Interior main pin, main stylus printer can be made to enter ulna pulp cavity in the marrow more convenient；It is three by the remote design of main pin in the marrow It is prismatic, because triangle has stability, therefore ulna can be fixed well；Pass through the main pin in the marrow The first lock slots and the second lock slots laterally set are set gradually on the incline of the distal end, can be very good in the marrow Main pin is fixed in marrow, it is therefore prevented that main pin is moved or rotated in marrow and the injury to caused by human body in the marrow, also, is passed through Triangular prism shaped and the first circular purl of the distal end of main pin and the second purl cross-fixing in the marrow, it can make to fix more Add reliable；Meanwhile the end of the near-end of main pin is provided with tail cap mating holes in the marrow, the tail cap coordinates with the tail cap Hole, which is fixedly connected, to extract main pin in the marrow out of marrow after union, makes the extraction of main pin in the marrow convenient Fast, patient's pain is reduced.

By said structure design, needle lock has following knot in the elastic intramarrow of the ulnar fracture of the utility model design Structure feature：In use, determining ulnar fracture position first, then according to fracture do not cut the closed reduction of skin, After reduction of the fracture satisfaction, stylus printer in the elastic intramarrow of ulnar fracture is entered into ulna pulp cavity, selects the screwed hole of suitable travel(l)ing rest With support bracket fastened screwed hole, make the two position correspondence, then insert bolt, respectively the screwed hole with travel(l)ing rest, fixation The screwed hole of support is connected, and fixes travel(l)ing rest and support bracket fastened position, and the bullet of ulnar fracture now can be achieved Property intramedullary needle and the first purl and the second purl squeeze into the fixation of the first lock slots and the second lock slots.

The structure of the elastic intramedullary needle and its fixator of ulnar fracture of the present utility model is simple, easy to use, quick, and Make ulnar fracture fixed, x-ray exposed amount in art can be reduced, and obtain postoperative satisfactory effect.

Brief description of the drawings

The following drawings is only intended to, in doing the utility model schematic illustration and explanation, not limit model of the present utility model Enclose.Wherein：

Fig. 1 be the utility model embodiment described in marrow in main pin structural representation；

Structural representation when Fig. 2 uses for main pin in the marrow described in the utility model embodiment；

Fig. 3 is the structural representation of needle lock in the elastic intramarrow of the ulnar fracture described in the utility model embodiment；

In figure：Main pin in 1- marrows, 11- near-ends, 111- tail cap mating holes, 112- tail caps, 12- distal ends, 121- first are locked Groove, the lock slots of 122- second, the purls of 123- first, the purls of 124- second, 13- distal ends, 2- ulnas, the bullet of 3- ulnar fractures Property intramedullary needle fixator, 31- fixed supports, 32- travel(l)ing rests, 33- purl guiders, 331- purl fixed columns, 332- lock Pin leading truck, 34- bolts.

Embodiment

With reference to the accompanying drawings and examples, the utility model is expanded on further.In the following detailed description, only pass through Bright mode describes some one exemplary embodiments of the present utility model.Undoubtedly, one of ordinary skill in the art can be with Recognize, can be with a variety of modes to described in the case of without departing from spirit and scope of the present utility model Embodiment is modified.Therefore, accompanying drawing and description are inherently illustrative, rather than for limiting the protection of claim Scope.

As shown in Figure 1 to Figure 2, according to the elastic intramedullary needle of the ulnar fracture of the utility model embodiment, including master in marrow Pin 1, main pin 1 includes near-end 11, distal end 12 and the distal end 13 set gradually in the marrow, and the near-end 11 is cylinder, To be triangular prism shaped, the distal end 13 is conehead structure for the distal end 12, and the length of the distal end 12 is 3cm, the distal end The first lock slots 121 and the second lock slots 122 laterally set, the He of the first lock slots 121 are sequentially provided with 12 incline The cross section of second lock slots 122 is semicircle, first lock slots 121 and second lock slots 122 respectively with First purl 123 and the second purl 124 coordinate with described in pairing in marrow main pin the first lock slots 121 and the second lock slots 122 Positioning.

Wherein, the distal end 12 of main pin 1 in the marrow is designed as it is triangular prism shaped, because triangle has stability, Therefore ulna 2 can be fixed well；By being sequentially provided with the marrow on the incline of the distal end 12 of main pin 1 It the first lock slots 121 and the second lock slots 122 laterally set, can be very good main pin 1 in the marrow being fixed in marrow, prevent Stop main pin 1 in the marrow to move or rotate in marrow and the injury to caused by human body, also, pass through main pin 1 in the marrow Distally 12 triangular prism shaped and the first circular purl 123 and the cross-fixing of the second purl 124, fixed more stable, jail can be made Gu.

Preferably, first lock slots 121 are identical with the opening direction of second lock slots 122.It is arranged such, can Make main pin 1 in the marrow fixed, strengthen fixed effect.

Further, first lock slots 121 are identical with the diameter of the second lock slots 122.It is arranged such, can be made One purl 123 and the second purl 124 have versatility, improve procedure efficiency, reduce production cost.

Further, main pin 1 is flexible in the marrow, and in the marrow main 1 flexible radian of pin big I according to The degree of crook and fracture of fracture pulp cavity are changed by doctor in inserting needle.It is arranged such, main pin 1 has certain in the marrow Elasticity, because ulna has certain radian in itself, by using main pin 1 in the flexible marrow, it can make main in the marrow It is more convenient that pin 1 squeezes into ulna pulp cavity.Preferably, main pin 1 is made up of medical elastic stainless steel in the marrow.

Further, in addition to tail cap 112, the end of the near-end 11 are provided with tail cap mating holes 111, the tail cap 112 It is fixedly connected with the tail cap mating holes 111 so as to which main pin 1 in the marrow is squeezed into marrow and after union by institute Main pin 1 in marrow is stated to extract out of marrow.Be arranged such, can make main pin 1 in the marrow squeeze into and extract it is convenient and swift, reduce disease People's pain, postoperative rehabilitation can also be carried out well simultaneously by shortening operating time.

Further, the tail cap 112 is hexagon socket head cap screw, and the tail cap mating holes 111 is provided with internal thread, the tail cap 112 are fixedly connected with the tail cap mating holes 111.It is arranged such, the tail cap 112 and the tail cap mating holes 111 can be improved The reliability being fixedly connected.

As shown in figure 3, according to needle lock 3 in the elastic intramarrow of the ulnar fracture of the utility model embodiment, including it is described Ulnar fracture elastic intramedullary needle, fixed support 31, travel(l)ing rest 32, bolt 34 and purl guider 33, the fixation Support 31 is used to fix the elastic intramedullary needle of the ulnar fracture and is provided with several screwed holes, and the travel(l)ing rest 32 is arranged at The top of the fixed support 31 and be provided with several screwed holes, the purl guider 33 it is connected with the travel(l)ing rest 32 and Provided with the pilot hole being connected respectively with first purl 123 and second purl 124, the bolt 34 successively with institute State the screwed hole of travel(l)ing rest 32, the screwed hole of the fixed support 31 is connected with the fixation travel(l)ing rest 32 and described Fixed support 31.

In use, determining the fracture of ulna 2 first, the closure for then according to fracture do not cut skin is answered Position, after reduction of the fracture satisfaction, stylus printer in the elastic intramarrow of ulnar fracture is entered into ulna pulp cavity, it is suitable then to be selected according to fracture Travel(l)ing rest 32 screwed hole and fixed support 31 screwed hole, make the two position correspondence, then insert bolt 34, respectively The screwed hole of screwed hole, fixed support 31 with travel(l)ing rest 32 is connected, and makes the position of travel(l)ing rest 32 and fixed support 31 Fixation is put, is now the elastic intramedullary needle and the cooperation position of the first purl 123 and the second purl 124 that ulnar fracture can be achieved Cross-fixing.It is arranged such, can effectively avoids injury of the multiple x-ray to human body, can efficiently, efficiently realizes the bullet of ulnar fracture Property intramedullary needle and the first purl 123, the fixation of the second purl 124.

Further, the purl guider 33 includes purl fixed column 331 and purl leading truck 332, the purl Fixed column 331 is connected with the fixed support 31, and the purl leading truck 332 is connected and is provided with the purl fixed column 331 Two pilot holes.

Further, the fixed support 31 is L-shaped, and described one end of fixed support 31 is vertically arranged and end and the chi The elastic intramedullary needle of bone fracture is connected, the other end is horizontally disposed and end is provided with several screwed holes.Preferably, the fixed branch The end of the one end of frame 31 is provided with screwed hole, and the tail cap 112 is hexagon socket head cap screw, and the tail cap mating holes 111 is provided with internal thread, The screwed hole of the fixed support 31 is correspondingly arranged with the tail cap mating holes 111, by the hexagon socket head cap screw of the tail cap 112 according to In the screwed hole and the tail cap mating holes 111 of the secondary insertion fixed support 31, you can realize the fixed support 31 and institute Being connected for the elastic intramedullary needle of ulnar fracture is stated, the end of the other end of fixed support 31 is described for connecting provided with several The screwed hole of travel(l)ing rest 32.

Further, the bolt 34 is provided with two.It is arranged such, the travel(l)ing rest 32 and the fixation can be improved The reliability that support 31 is fixedly connected, prevent one of them described bolt 34 from connecting not firm or failure.

The structure of the elastic intramedullary needle and its fixator of ulnar fracture of the present utility model is simple, easy to use, quick, wound Hinder small, knitting soon and make the fracture fixation of ulna 2 firm, x-ray exposed amount in art can be reduced, and obtain postoperative satisfactory effect.This Utility model has wide application prospects in the fracture of ulna 2.

The schematical embodiment of the utility model is the foregoing is only, is not limited to model of the present utility model Enclose.Any those skilled in the art, the made equivalent change on the premise of design of the present utility model and principle is not departed from Change and change, the scope of the utility model protection all should be belonged to.

Claims (10)

1. A kind of 1. elastic intramedullary needle of ulnar fracture, it is characterised in that：Including main pin in marrow, main pin includes setting successively in the marrow Near-end, distal end and the distal end put, the near-end are cylinder, and the distal end is triangular prism shaped, and the distal end is cone Header structure, the length of the distal end is 3cm, and the first lock slots and second laterally set are sequentially provided with the incline of the distal end Lock slots, first lock slots and the second lock slots cross section are semicircle, first lock slots and described Two lock slots coordinate with the first purl and the second purl with first lock slots of main pin and described in marrow described in pairing respectively Second lock slots position.
2. 2. the elastic intramedullary needle of ulnar fracture as claimed in claim 1, it is characterised in that first lock slots and described The opening direction of two lock slots is identical.
3. 3. the elastic intramedullary needle of ulnar fracture as claimed in claim 1 or 2, it is characterised in that first lock slots and institute It is identical to state the second lock slots diameter.
4. 4. the elastic intramedullary needle of ulnar fracture as claimed in claim 1, it is characterised in that main needle set is flexible in the marrow, And in the marrow the main flexible radian of pin big I according to fracture pulp cavity degree of crook and fracture by doctor in inserting needle Shi Bianhua.
5. 5. the elastic intramedullary needle of ulnar fracture as claimed in claim 1, it is characterised in that also including tail cap, the near-end End is provided with tail cap mating holes, and the tail cap is fixedly connected with the tail cap mating holes so as to which main pin in the marrow is squeezed into bone Extracted in marrow and by main pin in the marrow after union out of marrow.
6. 6. the elastic intramedullary needle of ulnar fracture as claimed in claim 5, it is characterised in that the tail cap is hexagon socket head cap screw, The tail cap mating holes is provided with internal thread, and the tail cap is fixedly connected with the tail cap mating holes.
7. 7. needle lock in a kind of elastic intramarrow of ulnar fracture, it is characterised in that including any one of claim 1 to 6 Ulnar fracture elastic intramedullary needle, fixed support, travel(l)ing rest, bolt and purl guider, the fixed support is used for Fix the elastic intramedullary needle of the ulnar fracture and be provided with several screwed holes, the travel(l)ing rest is arranged at the fixed support Top and several screwed holes are provided with, the purl guider is connected with the travel(l)ing rest and provided with respectively with described first The pilot hole that purl and second purl are connected, the bolt screwed hole with the travel(l)ing rest, described solid successively The screwed hole of fixed rack is connected with the fixation travel(l)ing rest and the fixed support.
8. 8. needle lock in the elastic intramarrow of ulnar fracture as claimed in claim 7, it is characterised in that the purl guider Including purl fixed column and purl leading truck, the purl fixed column is connected with the fixed support, the purl leading truck with The purl fixed column is connected and is provided with two pilot holes.
9. 9. needle lock in the elastic intramarrow of ulnar fracture as claimed in claim 7, it is characterised in that the fixed support is in L Type, described fixed support one end is vertically arranged and the elastic intramedullary needle of end and the ulnar fracture is connected, other end level is set Put and end is provided with several screwed holes.
10. 10. needle lock in the elastic intramarrow of ulnar fracture as claimed in claim 7, it is characterised in that the bolt is provided with Two.