CN104665916A

CN104665916A - Intramedullary nail entry angle regulator

Info

Publication number: CN104665916A
Application number: CN201510079211.3A
Authority: CN
Inventors: 陆爱清
Original assignee: Individual
Current assignee: Suzhou And Science & Technology Development Co ltd
Priority date: 2015-02-15
Filing date: 2015-02-15
Publication date: 2015-06-03
Anticipated expiration: 2035-02-15
Also published as: CN104665916B

Abstract

The invention discloses an intramedullary nail entry angle regulator, which comprises a guide rod, wherein a lead-in section is arranged on the front end of the guide rod; the guide rod and the lead-in section are in an integral forming structure; a first guide channel parallel with the center axis of the guide rod penetrates through the guide rod and the lead-in section; the first guide channel penetrates through the rear end face of the guide rod to form a first guide hole; the first guide channel penetrates through the external surface of the lead-in section to form a lead-out hole; a plurality of second guide channels which incline relative to the first guide channel are arranged in the guide rod; each second guide channel penetrates through the guide rod and the lead-in section; each second guide channel penetrates through the rear end face of the guide rod to form a second guide hole; the second guide channels penetrate through the lead-in section to be collected in the lead-out hole; the inclination angles of the second guide channels relative to the first guide channel are different. The intramedullary nail entry angle regulator has the advantages that the intramedullary nail entry angle can be rapidly and accurately regulated, the operation time is effectively shortened, and the use is very convenient.

Description

Intramedullary pin needle angle actuator

Technical field

The present invention relates to the assistive device that auxiliary intra medullary nail enters pulp cavity, particularly relate to a kind of intramedullary pin needle angle actuator.

Background technology

The fixed form of Fracture of femur often adopts intramedullary pin methods of internal fixation, intramedullary pin enter the entry point of femoral bone cavitas medullaris and needle angle most important, it is very difficult that the entry point location of intramedullary pin and the incorrect meeting of intramedullary pin needle angle cause intramedullary pin to enter pulp cavity, serious also can affect whole therapeutic process, thus causes Fracture of femur place delayed union, disunion or malunion.At present when performing the operation, the entry point of intramedullary pin and needle angle are assisted by X-ray, relied on its experience to judge by doctor and adjust, intramedullary pin inserting needle path is introduced into femoral bone cavitas medullaris by guide pin, when intramedullary pin enters femoral bone cavitas medullaris along guide pin introducing path, if guide pin introducing path relative pulp cavity generation deflection, then intramedullary pin is difficult to insert or cannot insert in pulp cavity at all, is thus badly in need of a kind ofly adjusting guide pin introducing path quickly and accurately thus regulating the assistive device of intramedullary pin needle angle.

Summary of the invention

The technical problem of solution required for the present invention is: provide a kind of intramedullary pin needle angle actuator that can adjust intramedullary pin needle angle quickly and accurately.

For solving the problem, the technical solution used in the present invention is: described intramedullary pin needle angle actuator, comprising: guide post, guide post front end is provided with introducing section, and introducing section is by the rear cone reduced gradually to front diameter; Guide post with introduce section and to be one of the forming structure, be arranged at guide post with the first guide channel of guide post centerline axis parallel is through and introduces in section, first guide channel runs through guide post rear end face and forms the first pilot hole, and the first guide channel runs through to be introduced section outer surface and forms fairlead; The second guide channel that some relative first guide channels tilt is provided with in guide post, each second guide channel is through to be arranged at guide post and to introduce in section, each second guide channel runs through guide post rear end face and forms the second pilot hole, each second guide channel comes together in fairlead after running through introducing section, and each second guide channel is all not identical relative to the angle of inclination of the first guide channel.

Further, aforesaid intramedullary pin needle angle actuator, wherein, guide post sidewall is arranged at intervals with some strip grooves be inwardly recessed, and strip groove is arranged along guide post axis direction, and each strip groove is distributed on guide post sidewall.

Further, aforesaid intramedullary pin needle angle actuator, wherein, described strip groove is the arc groove be inwardly recessed.

Further, aforesaid intramedullary pin needle angle actuator, wherein, is provided with three the second guide channels in guide post, and the angle of inclination of three relative first guide channels of the second guide channel is respectively: 3 °, 5 °, 7 °.

The invention has the beneficial effects as follows: the structure of this intramedullary pin needle angle actuator is simple, in use the most applicable guide lead can be selected to enter the first or second guide channel of femoral bone cavitas medullaris according to X-ray development, so just can adjust the introducing path of guide pin quickly and accurately, thus realize the adjustment of intramedullary pin needle angle, use very convenient, substantially reduce operating time, greatly reduce the amount of radiation suffered by doctor and patient simultaneously.

Accompanying drawing explanation

Fig. 1 is the cross-sectional schematic of intramedullary pin needle angle actuator of the present invention.

Fig. 2 is the structural representation of left apparent direction 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 depicted in figs. 1 and 2, the intramedullary pin needle angle actuator described in the present embodiment, comprising: guide post 4, is provided with introduces section 5 in the front end of guide post 4, and introducing section 5 is by the rear cone reduced gradually to front diameter; Guide post 4 with introduce section 5 and to be one of the forming structure, the introducing section 5 of cone shape can guide guide post 4 to stretch to and femur inserting needle location contacts from skin incision better.First guide channel 6 is through to be arranged at guide post 4 and to introduce in section 5, first guide channel 6 is parallel to each other with the central axis of guide post 4, first guide channel 6 runs through guide post 4 rear end face and forms the first pilot hole 41, first guide channel 6 and run through and introduce section outer surface and form fairlead 51; The second guide channel 61 that some relative first guide channels 6 tilt is provided with in guide post 4, each second guide channel 61 is through to be arranged at guide post 4 and to introduce in section 5, each second guide channel 61 runs through the rear end face of guide post 4 and forms the second pilot hole 42, each second guide channel 61 comes together in fairlead 51 after running through introducing section 5, and the angle of inclination of relative first guide channel 6 of each second guide channel 61 is all not identical.As shown in Figure 1, in the present embodiment, the angle of inclination being provided with relative first guide channel 6 of three the second guide channels, 61, three the second guide channels 61 in guide post 4 is respectively: 3 °, 5 °, 7 °.In the present embodiment, the sidewall of guide post 4 is arranged at intervals with some strip grooves 43 be inwardly recessed, strip groove 43 is arranged along guide post 4 axis direction, and each strip groove 43 is distributed on the sidewall of guide post 4.In the present embodiment, the arc groove of described strip groove 43 for being inwardly recessed.The setting of strip groove 43, makes doctor can control this intramedullary pin needle angle actuator better, effectively improves procedure efficiency.

In use, under X-ray is auxiliary, guide pin is stretched to from skin incision and contacts with femur, then the fairlead 51 of guide post is just inserted in guide pin, guide pin is made to be positioned at the first guide channel 6, the angular deflection degree of guide pin needle angle is judged according to X-ray development, then the most applicable guide lead is selected to enter a certain second guide channel 61 of femoral bone cavitas medullaris, suppose that the degree of skewness of the guide pin being positioned at the first guide channel 6 is 3 °, then rotary steering bar makes to rotate to relevant position with the second guide channel 61 of the first guide channel 6 deflection 3 °, guide pin is made to enter femoral bone cavitas medullaris under the guiding of this second guide channel 61, then intramedullary pin just can enter femoral bone cavitas medullaris along guide pin introducing path swimmingly.

Advantage of the present invention is: the structure of this intramedullary pin needle angle actuator is simple, in use the most applicable guide lead can be selected to enter the first or second guide channel 6 and 61 of femoral bone cavitas medullaris according to X-ray development, so just can adjust the introducing path of guide pin quickly and accurately, thus realize the adjustment of intramedullary pin needle angle, use very convenient, substantially reduce operating time, greatly reduce the amount of radiation suffered by doctor and patient simultaneously.

Claims

1. intramedullary pin needle angle actuator, comprising: guide post, it is characterized in that: guide post front end is provided with introducing section, and introducing section is by the rear cone reduced gradually to front diameter; Guide post with introduce section and to be one of the forming structure, be arranged at guide post with the first guide channel of guide post centerline axis parallel is through and introduces in section, first guide channel runs through guide post rear end face and forms the first pilot hole, and the first guide channel runs through to be introduced section outer surface and forms fairlead; The second guide channel that some relative first guide channels tilt is provided with in guide post, each second guide channel is through to be arranged at guide post and to introduce in section, each second guide channel runs through guide post rear end face and forms the second pilot hole, each second guide channel comes together in fairlead after running through introducing section, and each second guide channel is all not identical relative to the angle of inclination of the first guide channel.

2. according to intramedullary pin needle angle actuator according to claim 1, it is characterized in that: on guide post sidewall, be arranged at intervals with some strip grooves be inwardly recessed, strip groove is arranged along guide post axis direction, and each strip groove is distributed on guide post sidewall.

3. according to intramedullary pin needle angle actuator according to claim 2, it is characterized in that: described strip groove is the arc groove be inwardly recessed.

4. according to the intramedullary pin needle angle actuator described in claim 1 or 2, it is characterized in that: in guide post, be provided with three the second guide channels, the angle of inclination of three relative first guide channels of the second guide channel is respectively: 3 °, 5 °, 7 °.