Adjustable length ossicular prosthesis with low profile resilient joint

A technology for ossicles and prostheses, which is applied in the field of ossicles prostheses with adjustable lengths, can solve problems such as limiting prostheses, poor sound conduction of the ossicular chain, and prosthesis displacement.

Active Publication Date: 2018-08-31
ENTEROPTYX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This condition may lead to displacement of the prosthesis or otherwise cause poor sound conduction along the ossicular chain
[0008] Furthermore, the construction of ALTO limits the minimum length to which the prosthesis can be adjusted
This limitation may limit the use of the ALTO prosthesis in patients with short anatomical distances between the tympanic membrane and floor plate or stapes

Method used

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  • Adjustable length ossicular prosthesis with low profile resilient joint
  • Adjustable length ossicular prosthesis with low profile resilient joint
  • Adjustable length ossicular prosthesis with low profile resilient joint

Examples

Experimental program
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Embodiment Construction

[0028] refer to figure 1 and figure 2 , shows an adjustable-length auditory ossicle prosthesis 10 according to the present invention. In accordance with the present invention, the prosthesis 10 can optionally be used for complete repair or replacement (as described below with respect to Figure 13 ) or partial repair or replacement (as discussed below on Figure 14 discussion).

[0029] The prosthesis 10 includes an enlarged head 12 for contacting the eardrum when implanted in a human ear. According to a preferred aspect of the present prosthesis, a flexible sleeve 14 is mounted in the head 12 . The elongated shaft 16 has a proximal or outer end 18 and a distal or inner end 20 . As used herein, the relative terms medial and lateral, and proximal and distal relate to the relative position of the prosthesis 10 when placed in a person's ear for the intended operation. Shaft 16 extends from sleeve 14 to a smaller middle ear engaging structure, such as second smaller head 22...

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Abstract

An ossicular prosthesis is adjustable in length and temporarily and resiliently adjustable in angular orientation. The prosthesis includes a head for contacting a tympanic membrane, and a resilient sleeve is mounted within the head. An elongate shaft extends through the sleeve, and includes a distal end adapted to engage a footplate or stapes. The sleeve forms a resilient joint that allows the shaft to undergo an angular motion relative to the sleeve when subject to a non-axial force, and then subsequently return to its original position after the force is removed. The sleeve may also be longitudinally displaceable within the head of the prosthesis such that the shaft can undergo a damped linear motion. Also as a result of the arrangement of the sleeve, the prosthesis is adjustable to a very short length.

Description

technical field [0001] The present invention relates to ossicle prostheses for complete replacement and reconstruction of the ossicular chain. More specifically, the present invention relates to adjustable length auditory ossicle prostheses. Background technique [0002] The ossicles of the middle ear are sometimes damaged due to disease, trauma, or a birth deformity. If this damage causes a discontinuity in the bone between the eardrum and the oval window, then there is no sound transmission and hearing loss results. Some or all of these ossicles can be replaced with small prostheses. For some surgeons, the material of choice over the years was and remains the patient's own bone. Typically, the incus body is taken and then modified into a strut that rests on any gap that exists between the tympanic membrane and the oval window. Although this is an effective method of reconstruction, the time required to take and carve the incus into a usable prosthesis led to the develo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/18
CPCA61F2250/0006A61F2/18A61F2002/183A61F11/00
Inventor A.D.普雷斯科特P.爱尔兰
Owner ENTEROPTYX
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