AUTHORIZING PROGRAMMING OF AN IMPLANTED DEVICE USING SECOND FACTOR
Described herein are techniques to ensure a user using an external device is authorized to connect and connecting to a correct implantable medical device using a wireless communication protocol. A request for authorization is sent to the external device from the implantable medical device, and the authorization can be provided by an authorization pulse sent using the implantable medical device charger over the inductive link between the charging device and the implanted device. The authorization pulse can be trusted because the inductive link is short range, ensuring the patient is aware of the connection to the implanted device. Once the implanted device receives the authorization pulse, it may finalize the pairing over the first connection.
1 . A method, comprising:
receiving, by a medical device, a request to pair from an external device over a first wireless communication path;
in response to receiving the request to pair:
enabling, by the medical device, a window of exclusivity for pairing with the external device, and
transmitting, by the medical device, an authorization instruction message to the external device over the first wireless communication path;
during the window of exclusivity, receiving, via a second wireless communication path, an authorization pulse; and
in response to receiving the authorization pulse, pairing with the external device.
2 . The method of claim 1 , wherein the authorization pulse is received from an authorization device.
3 . The method of claim 2 , wherein the authorization device is a charging device for the medical device.
4 . The method of claim 2 , wherein the authorization pulse is an encoded command instructing the medical device to authorize the request to pair.
5 . The method of claim 2 , wherein the authorization device is not the external device.
6 . The method of claim 1 , wherein the request to pair is a request to initiate a pairing relationship between the medical device and the external device using short-wavelength ultra-high frequency radio waves.
7 . The method of claim 1 , wherein engaging the window of exclusivity comprises declining all other pairing requests over a communication protocol of the first wireless communication path while the window of exclusivity is active.
8 . The method of claim 1 , wherein the medical device is implanted into a patient, and wherein the external device is configured with an interface for obtaining information from or setting parameters of the medical device.
9 . The method of claim 1 , wherein the second wireless communication path is an inductive communication path or a near-field communication path.
10 . The method of claim 1 , further comprising:
broadcasting an advertisement packet; and
stop broadcasting the advertisement packet during the window of exclusivity.
11 . A medical device comprising:
a first antenna;
a second antenna;
a processor; and
a non-transitory computer-readable medium storing instructions that, when executed by the processor, cause the processor to:
receive a request to pair from an external device over a first wireless communication path via the first antenna;
in response to receiving the request to pair:
enable, by the medical device, a window of exclusivity for pairing with the external device, and
transmit, by the medical device, an authorization instruction message to the external device over the first wireless communication path;
during the window of exclusivity, receive, via a second wireless communication path via the second antenna, an authorization pulse; and
in response to receiving the authorization pulse, pairing with the external device.
12 . The medical device of claim 11 , wherein the authorization pulse is received from an authorization device.
13 . The medical device of claim 12 , wherein the authorization device is a charging device for the medical device.
14 . The medical device of claim 12 , wherein the authorization pulse is an encoded command instructing the medical device to authorize the request to pair.
15 . The medical device of claim 12 , wherein the authorization device is not the external device.
16 . The medical device of claim 11 , wherein the request to pair is a request to initiate a pairing relationship between the medical device and the external device using short-wavelength ultra-high frequency radio waves.
17 . The medical device of claim 11 , wherein engaging the window of exclusivity comprises declining all other pairing requests over a communication protocol of the first wireless communication path while the window of exclusivity is active.
18 . The medical device of claim 11 , wherein the medical device is implanted into a patient, and wherein the external device is configured with an interface for obtaining information from or setting parameters of the medical device.
19 . The medical device of claim 11 , wherein the second wireless communication path is an inductive communication path or a near-field communication path.
20 . The medical device of claim 11 , wherein the non-transitory computer-readable medium further stores instructions that, when executed by the processor, cause the processor to:
broadcast an advertisement packet; and
stop broadcast of the advertisement packet during the window of exclusivity.