Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Implantables > Bone C Implant Midterm > Flashcards

Bone C Implant Midterm Flashcards

1
Q

Electromagnetic Transducer for BAHA
* parts and process

A
  • armature (moves) & the yoke (fixed) w/small air spaces between them
  • Armature is surrounded by wired coils and contains a permanent magnet (yoke remains fixed and does not move)
  • electrical current is delivered though the coil creating a magnetic field in the amature
  • fluctuations of field = oscillating magnetic field
  • creating attract and repel between the armuture and yoke
  • creating mehcnical energy that is transmistted to the skull when sound processor is coupled to the head.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the Basic Components of the BAHA?

A

External sound processor
* captures acoutics signals, converst to mechnical vibration and delivers the M vibrations to the internal component

Titanium components
* surgically implanted in the skull and used to deliver mechnical vibrations to the cochlea via bone conduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the common complications associated with BAHA?

A
  • Peri-implant infection
  • Flap Necrosis
  • Loss of the abutment (infection or trauma)
  • Osseointegration failure
  • Skin Numbness
  • Skin overgrowth over the abutment
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

osseointegrated vs. non-osseointegrated

A

Osseointegrated: implants require surgically placing an implant screw that integrates with the temporal bone. (bone adheres to screw)
Non-osseointegrated: implants are attached to the bone of the skull, but do not rely on osseointegration for the function of the device

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Osseointegration refers to the process in which what?

A

Osseointegration refers to the process in which bone cells attach/adhere to the surface of a metal (titanium) surface.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Osseointegration and an example

A
  • process in which bone cells attach/adhere to the surface of a metal (titanium) surface.
  • implants require surgically placing an implant screw that integrates with the temporal bone.
  • BAHA
  • BAHA attract
  • Osia
  • Ponto
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Non-osseointegration and an example

A

implants are attached to the bone of the skull, but do not rely on osseointegration for the function of the device.
* Bonebridge
* Sophono

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

direct drive vs. skin drive

A

Skin Drive: Vibrations are transmitted to the bone through the skin via an external drive placed on the skin surface
Direct Drive: Vibrations are directly transmitted to the bone through an implanted transducer without the need for skin transmission

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is skin drive & an example

A

Skin drive: vibrations are transmitted to the bone through the skin via an external device placed on the skin surface
* headband
* Softband
* adjoin
* Baha attract
* Sophono

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is direct drive and an example

A

Direct drive: vibrations are directly transmitted to the bone through an implanted transducer without the need for skin transmission
* Baha
* Ponto
* BoneBridge
* BCI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Percutaneous VS
Transcutaneous

A

Percutaneous: Penetrating the skin; this is what people refer to as Baha
Transcutaneous: Across the skin. vibrations from the soound processor are transmitted across the skin.
* keeps skin intect.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is Passive and an example

A

Passive: transducer is imbeded in the speech processor. stimultion is applied outside onto the skin. Less optimal
* BAHA
* Baha Attract
* Sophono
* Headband
* Softband

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is Percutaneous and an example.

A

Penetrating the skin; this is what people refer to as Baha.
* Baha
* Ponto

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Transcutaneous and an example

A

Across the skin. The vibrations from the sound processor are transmitted across the skin. Keeps the skin intact.
* Baha Attrect
* Sophono
* Headband
* Softband
* Bonebridge (trans & active)
* BCI (trans & active)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

active vs. passive implant

A

Active: Implanted; implant generate vibrations that is directly applied to the bone. (direct drive bone condution).
* Optimal BC sound transmission

Passive: Transducer is imbeded in the speech processor. Sound processor generates stimultion that is applied from the outside onto the skin.
* less optimal, Skin attenuates sound

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is Active and an example?

A

Active: transducer implanted, directly to the bone. Optimal tranmission
* Bonebridge
* BCI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Implantable BCHs are available in what two basic forms?

A

Percutaneous systems
&
Transcutaneous systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Stages of osseointegration

A

A screw is surgically placed and eventually, osseointegrate to the temporal bone; bone cells attach/adhere forming a biologic attachment.
* One stage: implant with the abutment is placed as a single piece in one surgical setting
* Two stages: the fixture is implanted in the first stage and the abutment is placed after osseointegration has taken place which is usually 3–6 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The FDA-approved indication for activation of BC. Percurtaneous

A
  • 5 yrs + & 2.5 mm skull thickness
  • CHL & no benefit from HA’s
  • Mixed HL Mild to Moderate SNHL w/BC thrsholds of 65db or better
  • for SSD Better ear BC thresholds 20db HL or better (but these imlants are generally able to provide enough stimultion that will allow transfer of the BC signal to the better hearing ear w/mild HL
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The FDA-approved indication for activation of BC Transcutaneous

A
  • 5 yrs + w/ 2.5mm skull thickness & at least 3mm skin thickness.
  • BC thresholds of 45dbHL ot better
  • Best for CHL or SSD w/ normal BC thresholds in better ear (due to any attenuation casued by the skin
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Current pratice for activation of BC

22
Q

what new design enhancements do current devices use to promote osseointegration (e.g., in BAHA Connect and Ponto devices)?

23
Q

Advantages of Transcutaneous

A
  • Lower rate of complications at and around incision site
  • Minimal wound care
  • Better aesthetics; invisable
  • Less risk of trauma to implant
  • Can be activated wi/ 4 weeks of surgery
24
Q

Advantages of percutaneous

A
  • Optimal Signal Delivery
  • Better for PT’s w/ sensitive skin
  • Excellent retention for active recipients
  • Approved for MRI w/strength up to 3T
  • artifact/shadow minimized
25
Limitations of percutaneous devices
* higher risk of abutment - related complications (skin overgrowth, infections and granulation tissue) * high risk of loss or truma * high hygiene maintain * 3 to 6 mos waiting btwn surgery and coupling of processor to abutment (allow for osseointegration) * Astheic concerns * Issues w/ attching soound processor when dexterity is a cocern
26
Limitations of transcutaneous devices
* Skin attenutaion up to 20db * insufficient power for BC mild to moderate HL * not MRI cleared above 1.5 T * magnetic plate create artifact and shadowing around the implant area * magnet pressure could aggreavate soft tissue problems
27
What detemines candidacy for Bone conduction devices?
* AC threshfrom 250 - 8k * BC Thresholds 250,500,1,1.5,2,3,4 (mask when possible) * WRS (CNC & Az-Bio)
28
Bone Conduction Candidacy Criteria CHL/MHL
* Average BC thresholds @500,1,2 & 3 khz candidate if **≤ 65 dB HL** (65 dB HL or better) * Average ABG @500,1,2 & 4khz Candidate if **≥ 30 dB** (ABG is 30 dB or greater) * 5 yrs + (surgical) * Any age (Non-surgical)
29
Bone Conduction Candidacy Criteria SSD
* Poor ear: Profound SNHL **≥ 80 dB HL** (80 dB HL or worse) * Good Ear: AC PTA (500,1,2,3) **≤ 20 dB** (20 dB HL or better) * 5+ (surgical) * any age (non surgical)
30
What are the main benefits of using a bone conduction device for patients with SSD?
BCD alleviates the head shadow effect **improving speech recognition** in quiet and in noise when speech arrives from the side of the poorer ear.
31
What are the main benefits of using a bone conduction device for patients with unilateral CHL?
efficacy remains **uncertain** with variability in outcomes across studies.
32
What are the main benefits of using a bone conduction device for patients with Bilateral CHL?
Significant improvement in audibility, speech recognition in quiet and in noise, and localization.
33
What are the main benefits of using a bone conduction device for patients with candidates w/ mild BC thresholds?
mild BC thresholds typically experience significant **audibility improvements**, while those with poorer thresholds may not benefit as much from BCDs.
34
What is the protocol and test setup for aided speech assessment in patients with CHL/MHL
* Functional Gain SF, Warble tone detection thresholds (500 -6khz) * Unaided & aided CNC @65 *dbSPL* speaker 0 azimuth, 1 meter away * Adaptive speech in noise, Aided & unaided. (QuickSIN, BKB-SIN) 65dbA signal routed to a speaker 0 and 1 meter away & noise 90 or 180 behind PT * Compare performance between aided and unaided
35
What is the protocol and test setup for aided speech assessment in patients with SSD
* Functional gain SF, Warble tone (500-6khz) * Adaptive Speech in noise aided & unaided **@65dbA** (quickSIN,BKB-SIN) * 90 and -90 (270) azimuth * Signal to poorer ear and noise to better ear * Improved SNR between aided and unaided = BCD benefit | (no CNC unlike CHL)
36
What are the current bone conduction devices?
Cochlear Baha * **Baha Connect** * **Baha Attract** * **Osia** Otocon * **Ponto** MED-EL * **Bonebridge** * **ADHEAR** Medtronic * **Sophono** Non-surgical * **Baha 5 Softband** * **SoundArc**
37
what are the Four major manufacturers of implantable bone conduction devices.
Cochlear Baha Oticon Ponto MED-EL BONEBRIDGE Medtronic Sophono
38
What are the two types of Cochlear baha & there implant types
**Baha Connect** * Osseointergated * Percutaneous * Direct Drive * Passive **Baha Attract** * Osseointegrated * Transcutaneous * Skin Drive * Passive
39
Identify BAHA components
40
Identify Baha Attract
41
Identify Ponto
42
Baha Connect * Osseo or non-osseo * percutaneous or transcutaneous, * passive or active * Direct or skin drive * function * info
* Osseointegrated (tioblast) * Percutaneous * Passive * Direct Drive * FDA 12 week gap btwn implantation & connection * activation wi/4-6 wks * MRI compatabile 3T
43
Baha Attract * Osseo or non-osseo * percutaneous or transcutaneous, * passive or active * Direct or skin drive * function * info
* Osseointegrated * Transcutaneous * Passive * Sjkin Drive * 4 wks should pass btwn implantation and * MRI 1.5 T
44
Oasia * Osseo or non-osseo * percutaneous or transcutaneous, * passive or active * Direct or skin drive * info
* Osseointegrated * Transcutaneous * Active * Skin Drive * Piezoeletric * MRI 3 T *
45
Key benefit of the Osia?
* no movement between parts that wear down over time * excellent hearing performace * slim, smart and robust * powerful and consistent performace
46
Ponto * Osseo or non-osseo * percutaneous or transcutaneous, * passive or active * Direct or skin drive * info
* Osseointegration * Percutaneous * Passive * Direct Drive * Soft band option * smallest BCD w/ two levels * (45,55 &65db)
47
MED- EL Bonebridge * Osseo or non-osseo * percutaneous or transcutaneous, * passive or active * Direct or skin drive * info
* Non-Osseointegrated * Transcutaneous (completely under the skin) * Active * Direct drive * wireless signal transmission between the SAMBA 2 audio processor and the active implant.
48
How does the MED-EL Bonebridge work?
* sound processor attaches to head via magnet * Processed signal is delivered to a transmitting coil located at the periphery of the SAMBA. * transmitting coil converts signal to an electromagnetic signal & transmitted across the skin and received by the internal coil of the BONEBRIDGE implant Internal implant contains four components: * A **coil** to receive electromagnetic signals from an external sound processor * A **magnet**, encased in a Silastic silicone sleeve, located at the center of the coil. * A **processor**, enclosed in a titanium case, that analyzes signals and determines the appropriate stimulation for the recipient. * A bone conduction floating mass transducer **(BC-FMT)** that converts signals from the processor into mechanical oscillations delivered to the skull.
49
Medtronic Sophono * Osseo or non-osseo * percutaneous or transcutaneous, * passive or active * Direct or skin drive * info
* non-osseointegrated * Transcutaneous * Passive * Skin drive * 45 minute surgery * MRI 3 T
50
MED-EL Adhear
* Non - surgical * Stick, click, hear * Skin drive * passive * Contains an adhesive adapter placed behind the ear coupled to the sound processor and delivers mechanical oscillations to mastoid bone
51
What nonsurgical bone conduction options are available to patients?
* ADHEAR * Baha Softband & Sound Arc
52

Implantables (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions