CN208355545U

CN208355545U - A kind of intramedullary nail suitable for fractured near end of thighbone

Info

Publication number: CN208355545U
Application number: CN201721406927.0U
Authority: CN
Inventors: 蔡弢艺; 黄国峰; 陈志达; 黄佳平
Original assignee: 175th Hospital of PLA
Current assignee: 175th Hospital of PLA
Priority date: 2017-10-27
Filing date: 2017-10-27
Publication date: 2019-01-11
Anticipated expiration: 2027-10-27

Abstract

The utility model discloses a kind of intramedullary nails suitable for fractured near end of thighbone, including proximally and distally；Inside and outside mounting hole is run through equipped with multiple in the proximal end, and the internal diameter of the mounting hole is gradually increased from outside to inside, and the mounting hole is equipped with Universal lock by spherical linkage in the outer part.The utility model has the beneficial effects that cooperating lock screw since Universal lock being arranged on the mounting hole of the proximal end of intramedullary nail, lock screw is allowed to change in certain angle；It prevents from being biased to cause locking failure due to lock screw position or needs to rebuild, reduce operation and take, improve success rate of operation, and reduce wound；The internal diameter of the mounting hole is gradually increased from outside to inside, provides space for the insertion of lock screw；The mutual cooperation of spacer pin and limiting slot improves the stability of lock screw.

Description

A kind of intramedullary nail suitable for fractured near end of thighbone

Technical field

The utility model relates to a kind of intramedullary nails suitable for fractured near end of thighbone.

Background technique

The current far-end locking of femoral interlocking nail mostly uses airmanship (magnetic navigation, core bore navigation): both in hollow marrow Merging, which is led, in nail turns, and navigation carries out far-end locking.These methods can greatly improve far-end locking accuracy, but precondition be must Navigation system or core brill must be placed in intramedullary nail, and leading far-end locking is needed to fix.If fracture end is located near end of thighbone Operative treatment need to be carried out using reconstruction nail.Proximal end pressurization nail can not accurately hold neck of femur direction if far-end locking is fixed in advance Cause to set nail failure or far-end locking need to be removed to set nail again, navigation system can not be put by pressurizeing if nail is fixed if leading proximal end Enter intramedullary nail and loses the accurate sexual clorminance of distal locking nail.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, provide one kind.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of intramedullary nail suitable for fractured near end of thighbone, including proximally and distally；It is characterized by: the proximal end is equipped with Multiple to run through inside and outside mounting hole, the internal diameter of the mounting hole is gradually increased from outside to inside, and the mounting hole passes through in the outer part Spherical linkage is equipped with Universal lock.

In a further preferred embodiment, the Universal lock includes a split ring；The inner wall of the split ring is equipped with screw thread, outside Wall is adapted to form the spherical linkage with the inner wall in the outer part of mounting hole.

It in a further preferred embodiment, further include spacer pin；The outside of the mounting hole is equipped with limiting slot, the spacer pin It can be inserted into the limiting slot to position the split ring.

In a further preferred embodiment, there are two the mounting holes, two mounting holes are distributed along the length direction of intramedullary nail Setting.

The utility model has the beneficial effects that since Universal lock, cooperation lock being arranged on the mounting hole of the proximal end of intramedullary nail Determine screw, lock screw is allowed to change in certain angle；Prevent due to lock screw position be biased to cause locking failure or It needs to rebuild, reduces operation and take, improve success rate of operation, and reduce wound；The internal diameter of the mounting hole is from outside to inside gradually It increases, provides space for the insertion of lock screw；The mutual cooperation of spacer pin and limiting slot improves the stability of lock screw.

The utility model is described in further detail with reference to the accompanying drawings and embodiments；But one kind of the utility model is suitable Intramedullary nail for fractured near end of thighbone is not limited to the embodiment.

Detailed description of the invention

Fig. 1 is the partial cutaway schematic view of a preferred embodiment of the utility model.

Fig. 2 is the side schematic view of a preferred embodiment of the utility model.

Fig. 3 is the enlarged structure schematic diagram of part A in Fig. 2.

Fig. 4 is the cut-away section structural schematic diagram of the Universal lock of a preferred embodiment of the utility model.

Specific embodiment

Embodiment, referring to FIG. 1 to FIG. 4, a kind of intramedullary nail suitable for fractured near end of thighbone of the utility model 100, including distal end 110 and proximal end 120；Inside and outside mounting hole 130, two mounting holes 130 are run through there are two setting in the proximal end 120 Length direction along intramedullary nail 100 is distributed setting.The internal diameter of the mounting hole 130 is gradually increased from outside to inside, as shown in Fig. 2, The mounting hole 130 is equipped with Universal lock 140 by spherical linkage in the outer part.

The Universal lock 140 includes a split ring；The inner wall of the split ring is equipped with screw thread 141, outer wall and mounting hole 130 Inner wall in the outer part be adapted to form the spherical linkage.

The present embodiment further includes spacer pin (not shown)；The outside of the mounting hole 130 is equipped with limiting slot 150, such as Shown in Fig. 3, the spacer pin be can be inserted into the limiting slot 150 to position the split ring 140.

Above-described embodiment only is used to further illustrate a kind of intramedullary nail suitable for fractured near end of thighbone of the utility model, But the utility model is not limited to embodiment, and made by the above technical examples according to the technical essence of the present invention What simple modification, equivalent change and modification, each falls in the protection scope of technical solutions of the utility model.

Claims

1. a kind of intramedullary nail suitable for fractured near end of thighbone, including proximally and distally；It is characterized by: the proximal end is equipped with more A to run through inside and outside mounting hole, the internal diameter of the mounting hole is gradually increased from outside to inside, passes through spherical shape on the outside of the mounting hole Hinge is equipped with Universal lock.

2. a kind of intramedullary nail suitable for fractured near end of thighbone according to claim 1, it is characterised in that: the Universal lock Including a split ring；The inner wall of the split ring is equipped with screw thread, and outer wall is adapted to form institute with the inner wall in the outer part of mounting hole State spherical linkage.

3. a kind of intramedullary nail suitable for fractured near end of thighbone according to claim 2, it is characterised in that: further include limit Pin；The outside of the mounting hole is equipped with limiting slot, and the spacer pin can be inserted into the limiting slot to position the split ring.

4. a kind of intramedullary nail suitable for fractured near end of thighbone according to claim 1, it is characterised in that: the mounting hole There are two, two mounting holes are distributed setting along the length direction of intramedullary nail.