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System, method and tool for ensuring correct insertion of an artificial hip joint

A technology for hip joints and tools, applied in the direction of hip joints, joint implants, joint implants, etc., which can solve problems such as expensive systems, propagation of piercing surgery, misalignment of prosthetic components, etc.

Inactive Publication Date: 2006-06-28
OM SURGICAL UK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because these systems are expensive, complex, and demanding to use, they are primarily employed in a limited number of university clinics, while smaller hospitals do not have the technology or specially trained human resources to operate them, thus requiring, for example, The present invention is such an inexpensive mechanical invention to solve a common emerging problem involving misalignment of prosthetic components, and to spread minimal puncture surgery beyond university clinics

Method used

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  • System, method and tool for ensuring correct insertion of an artificial hip joint
  • System, method and tool for ensuring correct insertion of an artificial hip joint
  • System, method and tool for ensuring correct insertion of an artificial hip joint

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Embodiment Construction

[0126] Figure 1 shows a positioning tool 1 according to the invention. The positioning tool 1 of the invention comprises two supports 2, 2', a handle part 14 and two flexible arms 7, 7'. The supports 2, 2' are fixed to the femur and pelvis respectively by means of screws 3, 3' in a conventional manner, alternatively pins can also be used instead of the screws. In order to avoid or reduce damage to the soft tissue, a protective sheath 4, 4' is placed around the part of the screw that is in contact with the soft tissue. Another method for securing the support is by means of clips that clip onto the bone.

[0127] The handle part 14 comprises a stem part 16 and a fork part 15, the handle part 14 replaces the shank (the rake head) of the tool 30 described in WO 01 / 19296, wherein the fork part is designed to interact with the rake head 30, as shown described in the referenced publications.

[0128] The fork part 15 is connected to the stem by means of a ball joint 17 which can b...

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Abstract

A system for ensuring correct insertion and spatial orientation of a prosthesis cup and / or a prosthesis neck of an artificial hip joint is described. The system comprises a tool ( 30 ) for controlling the mutual positioning of the main components in a femoral prosthesis; a measuring device ( 40 ) for measuring the distance between two supports ( 2, 2 ') connected to the patient s pelvis and femur; and a positioning tool ( 1 ) designed to be releasably connected to a handle part ( 14 ) connected to the tool according to item a) and to the two supports connected to the patients pelvis and femur. A measuring device and a positioning tool included in the system is also described in addition to a method for surgery by means of the present tools.

Description

technical field [0001] The present invention relates to the field of orthopedic surgery and in particular to systems for ensuring correct insertion of prosthetic components or parts thereof when implanting artificial hip joints, and for ensuring correct insertion of parts of artificial hip joints or femoral prostheses during surgical procedures method. Background technique [0002] An artificial hip joint has two main parts: the prosthetic stem and the joint socket, often called the "socket." One end of the prosthetic stem is provided with a spherical ball head or prosthetic neck, which may be modular and designed so that the prosthetic neck can rotate within the prosthetic stem, a ball head can be placed on the prosthetic stem. The ball head is designed for a tight, sliding fit in a spherical recess in the socket. Together the prosthetic stem / neck with ball head and socket acts as a ball joint to replace the natural hip joint. [0003] The other end of the prosthetic ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/17A61B17/00A61B17/16A61B19/00A61F2/02A61F2/32A61F2/34A61F2/36A61F2/38A61F2/46
CPCA61B17/00234A61B17/1659A61B17/1746A61B17/175A61F2/32A61F2/34A61F2/36A61F2/3662A61F2/38A61F2/4657A61F2/4684A61F2002/30153A61F2002/30538A61F2002/3611A61F2002/365A61F2002/4631A61F2002/4635A61F2002/4658A61F2002/4668A61F2230/0019A61F2250/0006A61F2002/4687A61B2090/067A61B2090/061
Inventor B·F·伊韦尔森
Owner OM SURGICAL UK
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