Implantation


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implantation

[‚im‚plan′tā·shən]
(medicine)
Placement of a tissue transplant in depth in the body.
Placement in the body of a device for mechanical repair, such as for a ventral hernia or a fracture.
Embedding of an embryo into the endometrium.

Implantation

 

the attachment of the embryo to the wall of the uterus in man and in all mammals with intrauterine development.

Three types of implantation are distinguished: superficial implantation, in which the embryo remains in the uterine cavity and attaches itself to the wall either by the entire surface of the trophoblast or by part of it (in Chiroptera and ruminants); eccentric implantation, in which the embryo deeply penetrates a fold of the uterine mucosa (a uterine crypt), the wall of which then grows together over the embryo and forms an implantation chamber that is isolated from the uterine cavity (in rodents); and interstitial implantation, characteristic of higher mammals (primates and man), in which the embryo destroys cells of the uterine mucosa and implants itself within the cavity formed, the uterine defect then healing and the embryo embedding itself totally within the uterine wall, where its subsequent development occurs.

References in periodicals archive ?
He assured the Philippines through an interview with select members of the media, including the BusinessMirror, of Med-El's continuous search for breakthroughs in the field of cochlear implantation that will make medicine and digital technology work together to battle deafness.
The cases underwent pure tone/free field audiometry, tympanometry, acoustic reflex measurements, brainstem audiometry (BSA) and auto acoustic emission (OAE) tests before cochlear implantation. All the patients were referred to the departments of pediatric psychiatry and neurology for evaluation.
convenient and flexible implantation comfortable wearing and no dependence on the characteristics of patient cooperation (Favero et al., 2010; Wahabuddin et al., 2015; Turkkahraman & Sarioglu, 2016).
Hence, it can be briefly summarized that there is a relationship between the structure and Ag implantation as shown in Figure 3.
Secondly, it would be expected that MDET has a better chance to pinpoint the WOI by covering a larger period of time for implantation [20].
Postoperative changes, abnormalities, complications, and unexpected events associated with the artificial iris implantation were noted in standardized full ophthalmic examinations.
The ascending aortic replacement with deep hypothermic circulatory cardiac arrest and additional aortic valve replacement during LVAD implantation was extensively discussed.
The pacemaker implantation via xiphisternal incision was successful in all 10(100%) patients.
It was also noted that of the two patients with bilateral simultaneous cochlear implantation had undergone re-implantation because of hard failure (one after 10 years and the other after three years) while the contralateral implant was functional.
Five patients suffered from vertigo after head trauma before implantation and facial nerve palsy was observed in four cases.
Table-IV: Significance of pacemaker implantation in patients with various etiological factors.

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