US5370670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detrusor myoplasty and neuromuscular electrical stimulation of the urinary bladder
Assignee: Thomas Jefferson University
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Filing: 1993-12-13
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Granted: 1994-12-06
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Expires: 2013-12-13
Abstract
Abstract A system and method for inducing micturition in patients with areflexic bladders or an otherwise diminished capacity to intentionally micturate are disclosed. The method disclosed comprises the steps of transecting a patient's rectus abdominis muscle between the xiphoid and umbilicus, preserving the patient's inferior epigastric artery and 2 to 4 innervating intercostal nerves and thereby creating a muscle flap attached to the symphysis pubis; wrapping the muscle flap around the patient's bladder and suturing it to itself to create a muscle bag around the bladder; attaching to the muscle bag and/or at least one of the innervating intercostal nerves, at least one electrical lead which is attached to an actuatable signal generator that comprises one or more switches and a power source; and actuating the switch of the actuatable signal generator in order to deliver a series of stimulus pulses from the signal generator to the muscle bag which are sufficient to cause the muscle bag to contract.
Inventors
- 👤 Michael B. Chancellor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:10
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/36007; A61N1/36042
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
157 words
A method of inducing micturition by a patient comprising the steps of: a) transecting said patient's rectus abdominis muscle between the xiphoid and umbilicus wherein said patient's inferior epigastric artery and at least two innervating intercostal nerves are preserved, to create a muscle flap attached to said patient's symphysis pubis; 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 of said preserved intercostal nerves, 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
157 words
A method of inducing micturition by a patient comprising the steps of: a) transecting said patient's rectus abdominis muscle between the xiphoid and umbilicus wherein said patient's inferior epigastric artery and at least two innervating intercostal nerves are preserved, to create a muscle flap attached to said patient's symphysis pubis; 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 of said preserved intercostal nerves, 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
18 words
The method described in claim 1 wherein said power source of said actuatable signal generator is a battery.
Claim 4
Dependent Claim
15 words
The method described in claim 1 wherein a lead is attached to an intercostal nerve.
Claim 5
Dependent Claim
21 words
The method described in claim 1 wherein two leads are attached to said actuatable signal generator and to two intercostal nerves.
Claim 6
Dependent Claim
15 words
The method described in claim 1 wherein a lead is attached to said muscle bag.
Claim 7
Dependent Claim
21 words
The method described in claim 1 wherein two leads are attached to said actuatable signal generator and to said muscle bag.
Claim 8
Dependent Claim
46 words
The method described in 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 9
Dependent Claim
44 words
The method described in 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 10
Dependent Claim
44 words
The method described in 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 11
Dependent Claim
16 words
The method described in claim 1 wherein said stimulus pulses range from 1 to 50 volts.
Claim 12
Dependent Claim
25 words
The method described in claim 1 wherein said actuatable signal generator comprises a switch that is a radiofrequency controlled electromagnetic switch or a magnetic switch.
Claim 13
Dependent Claim
27 words
The method described in claim 1 wherein said actuatable signal generator comprises two switches wherein at least one is a radiofrequency controlled electromagnetic switches or magnetic switches.
Claim 14
Dependent Claim
21 words
The method described in claim 1 wherein said actuatable signal generator comprises a switch that is a radiofrequency controlled electromagnetic switch.
Claim 15
Dependent Claim
21 words
The method described in claim 1 wherein said actuatable signal generator comprises two switches that are both radiofrequency controlled electromagnetic switches.
Claim 16
Dependent Claim
19 words
The method described in claim 1 wherein said actuatable signal generator comprises one switch that is a magnetic switch.
Claim 17
Dependent Claim
16 words
The method described in claim 1 wherein at least one lead comprises a spiral nerve electrode.
Claim 18
Dependent Claim
16 words
The method described in claim 1 wherein at least one lead is a wire extramuscular lead.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |