JP2001224600A5

JP2001224600A5 -

Info

Publication number: JP2001224600A5
Application number: JP2000038417A
Authority: JP
Filing date: 2000-02-16
Publication date: 2005-04-14
Anticipated expiration: 2020-02-16

Description

【０００８】
【課題を解決するための手段】
上記課題を解決するために本発明の髄内釘の調整具は、骨の髄内に挿入配置され、軸線方向に伸びる軸穴及び軸線方向と交差する方向に貫通した交差孔を備えた本体釘と、該本体釘の前記交差孔に挿通され、外周面に周回方向に複数の係合溝を有する交差ネジと、前記本体釘に前記交差孔に挿通された前記交差ネジを少なくとも回転方向に結合させるために、前記軸穴内に導入されて前記交差孔に対する開口部から突出することにより前記係合溝に係合するように構成された係合部材とを有する髄内釘に対して、前記交差ネジの前記係合溝を前記軸穴に合致させるための調整具であって、前記軸穴の少なくとも前記交差孔に到達するまでの深さ以上の長さを有する軸部と、該軸部の先端に形成され、前記係合溝に係合可能に構成された係合端部を備えた先端部とを有し、該先端部が前記軸穴に対して出し入れ自在に構成されていることを特徴とする。 [0008]
[Means for Solving the Problems]
In order to solve the above problems, the adjusting tool for an intramedullary nail of the present invention is a body nail which is inserted and disposed in the bone marrow and has an axially extending axial hole and a cross hole penetrating in a direction intersecting the axial direction. And a cross screw inserted into the cross hole of the main body nail and having a plurality of engagement grooves in the circumferential direction on the outer peripheral surface, and the cross screw inserted into the cross hole into the main body nail at least in the rotational direction An intramedullary nail having an engagement member configured to engage the engagement groove by being introduced into the axial hole and protruding from an opening to the cross hole, An adjustment tool for aligning the engagement groove of a screw with the shaft hole, the shaft portion having a length equal to or greater than the depth of at least the intersection hole of the shaft hole, and the shaft portion An engagement end formed at the tip and configured to be engageable with the engagement groove The and a distal portion having, tip portion, characterized in that it is out freely configured for the shaft hole.

次に、本発明の髄内釘の取付装置は、骨の髄内に挿入配置され、軸線方向に伸びる軸穴及び軸線方向と交差する方向に貫通した交差孔を備えた本体釘と、該本体釘の前記交差孔に挿通され、外周面に周回方向に複数の係合溝を有する交差ネジと、前記本体釘に前記交差孔に挿通された前記交差ネジを少なくとも回転方向に結合させるために前記軸穴内に導入されて前記交差孔に対する開口部から突出することにより前記係合溝に係合するように構成された係合部材とを有する髄内釘に対して、前記交差ネジを前記交差孔に通してねじ込むための髄内釘の取付装置であって、前記交差ネジに対して回転方向に係合可能に構成された回転工具と、前記交差ネジを前記交差孔に向けて案内するための案内部とを有し、前記回転工具には複数の前記係合溝に対応した位置に複数の係合部が設けられ、前記案内部には前記係合溝が前記軸穴に合致した状態で前記係合部に対して係合する被係合部が設けられ、前記係合部と前記被係合部のうち少なくともいずれか一方を他方に向けて付勢する付勢手段を備えていることを特徴とする。

Next, the intramedullary nail attachment device of the present invention is inserted into the bone marrow, and includes a body nail having an axially extending axial hole and a cross hole penetrating in a direction intersecting the axial direction; In order to connect at least in the rotational direction the cross screw which is inserted in the cross hole of the nail and which has a plurality of engagement grooves in the circumferential direction on the outer peripheral surface and the cross screw which is inserted in the cross hole in the main body nail The cross screw is inserted into the cross hole for the intramedullary nail having an engagement member configured to be engaged with the engagement groove by being introduced into the axial hole and protruding from the opening for the cross hole. Apparatus for mounting an intramedullary nail for threading through a screw, the rotary tool being configured to be rotatably engageable with the cross screw, and guiding the cross screw towards the cross hole And a guide portion, and the rotary tool A plurality of engaging portions are provided at positions corresponding to the grooves, and the guide portions are provided with engaged portions that engage with the engaging portions in a state where the engaging grooves are in alignment with the axial holes. A biasing means is provided for biasing at least one of the engaging portion and the engaged portion toward the other.

Claims

The nail is inserted into the bone marrow and has an axial hole extending in the axial direction and a cross hole penetrating in the direction crossing the axial direction, and the nail is inserted into the cross hole of the main nail and the circumferential direction is in the circumferential direction. A screw thread having a plurality of engaging grooves and the lead screw introduced into the shaft hole so as to at least connect in a rotational direction the screw thread inserted into the hole into the body nail and project from an opening for the hole An attachment device for an intramedullary nail for screwing the cross screw through the cross hole to an intramedullary nail having an engagement member configured to engage the engagement groove by ,
The rotary tool has a rotary tool configured to be rotatably engaged with the cross screw, and a guide for guiding the cross screw toward the cross hole, and the rotary tool has a plurality of engagements. A plurality of engaging portions are provided at positions corresponding to the mating grooves, and the guide portion is provided with an engaged portion which engages with the engaging portions in a state where the engaging grooves are in alignment with the axial holes. And a biasing means for biasing at least one of the engaging portion and the engaged portion toward the other.

The nail is inserted into the bone marrow and has an axial hole extending in the axial direction and a cross hole penetrating in the direction crossing the axial direction, and the nail is inserted into the cross hole of the main nail and the circumferential direction is in the circumferential direction. And at least a rotational direction for coupling the cross screw having a plurality of engagement grooves and the cross screw inserted into the cross hole to the main body nail, introduced into the shaft hole through an opening for the cross hole An adjustment tool for matching the engagement groove of the cross screw with the axial hole for an intramedullary nail having an engagement member configured to engage the engagement groove by projecting There,
A shaft portion having a length equal to or greater than the depth to reach at least the cross hole of the shaft hole, and an engagement end formed at the tip of the shaft portion and configured to be engageable with the engagement groove An intramedullary nail adjustment device characterized in that the distal end portion is provided so as to be able to be inserted into and removed from the axial hole.

The intramedullary nail adjuster according to claim 2, wherein the shaft portion of the adjuster has flexibility and elasticity.

The intramedullary nail adjustment tool according to claim 2 or 3, further comprising an operation handle at an end of the shaft opposite to the tip.