US5752978A
Expired / Lapsed
US
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Detrusor myoplasty and neuro-muscular electrical stimulation
Assignee: Thomas Jefferson University
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Filing: 1994-12-06
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Granted: 1998-05-19
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Expires: 2014-12-06
Abstract
Abstract An implantable micturition inducer is disclosed. The device comprises an implantable actuatable signal generator that comprises one or more switches and a power source, and at least one electrical lead having one end connected to the signal generator and the other end adapted to be connected to muscle transected to form a muscle bag around an individual's bladder. Actuation of the switch or switches results in the delivery of a series of stimulus pulses from the signal generator to the muscle bag which are sufficient to cause the muscle bag to contract and thereby induce micturation on demand. Methods for inducing micturition in patients with areflexic bladders or an otherwise diminished capacity to intentionally micturate are disclosed.
Inventors
- 👤 Michael B. Chancellor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:59
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/36007; A61N1/36042
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
141 words
A method of inducing micturition by a patient comprising the steps of: a) transecting an abdominal muscle of said patient to create a muscle flap attached, wherein blood supply and innervation to said muscle flap is preserved, b) wrapping said muscle flap around said patient's bladder and suturing said muscle flap to itself creating a muscle bag around said bladder; c) attaching to said muscle bag or at least one preserved nerve at least one electrical lead; d) attaching the other end of an electrical lead that is attached to said muscle bag or intercostal nerve to an actuatable signal generator that comprises one or more switches and a power source; and e) actuating said switch or switches and delivering a series of stimulus pulses from said signal generator to said muscle bag sufficient to cause said muscle bag to contract.
Claim 2
Independent Claim
141 words
A method of inducing micturition by a patient comprising the steps of: a) transecting an abdominal muscle of said patient to create a muscle flap attached, wherein blood supply and innervation to said muscle flap is preserved, b) wrapping said muscle flap around said patient's bladder and suturing said muscle flap to itself creating a muscle bag around said bladder; c) attaching to said muscle bag or at least one preserved nerve at least one electrical lead; d) attaching the other end of an electrical lead that is attached to said muscle bag or intercostal nerve to an actuatable signal generator that comprises one or more switches and a power source; and e) actuating said switch or switches and delivering a series of stimulus pulses from said signal generator to said muscle bag sufficient to cause said muscle bag to contract.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said power source of said actuatable signal generator is a battery.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein two leads are attached to said actuatable signal generator and to two nerves that innervate said muscle flap.
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein a lead is attached to said muscle bag.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein two leads are attached to said actuatable signal generator and to said muscle bag.
Claim 7
Dependent Claim
45 words
The method of claim 1 wherein said stimulus pulses are delivered at a frequency of 1 to 50 Hz, with each said pulse having a 0.01 to 1.0 msec pulse duration, 1 to 300 volt amplitude and a stimulation duration of up to 3 minutes.
Claim 8
Dependent Claim
43 words
The method of claim 1 wherein said stimulus pulses are delivered at a frequency of 10 to 35 Hz, with each said pulse having a pulse duration of 0.05 to 0.5 msec and said series has a duration of 0.2 to 1 minute.
Claim 9
Dependent Claim
43 words
The method of claim 1 wherein said stimulus pulses are delivered at a frequency of 10 to 30 Hz, with each said pulse having a pulse duration of 0.3 to 0.5 msec and said series has a duration of 0.2 to 1 minute.
Claim 10
Dependent Claim
15 words
The method of claim 1 wherein said stimulus pulses range from 1 to 50 volts.
Claim 11
Dependent Claim
24 words
The method of claim 1 wherein said actuatable signal generator comprises a switch that is a radiofrequency controlled electromagnetic switch or a magnetic switch.
Claim 12
Dependent Claim
26 words
The method of claim 1 wherein said actuatable signal generator comprises two switches wherein at least one is a radiofrequency controlled electromagnetic switches or magnetic switches.
Claim 13
Dependent Claim
20 words
The method of claim 1 wherein said actuatable signal generator comprises a switch that is a radiofrequency controlled electromagnetic switch.
Claim 14
Dependent Claim
20 words
The method of claim 1 wherein said actuatable signal generator comprises two switches that are both radiofrequency controlled electromagnetic switches.
Claim 15
Dependent Claim
18 words
The method of claim 1 wherein said actuatable signal generator comprises one switch that is a magnetic switch.
Claim 16
Dependent Claim
15 words
The method of claim 1 wherein at least one lead comprises a spiral nerve electrode.
Claim 17
Dependent Claim
15 words
The method of claim 1 wherein at least one lead is a wire extramuscular lead.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2001-05-18 | 2001-11-17 | 2002-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-18 | 2005-11-17 | 2006-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-18 | 2009-11-17 | 2010-05-19 | $7700.00 | Window Closed / Lapsed |