System, method, and kit for positioning a monitor transducer on a patient

• US 7,789,836 B2
• Filed: 05/12/2006
• Issued: 09/07/2010
• Est. Priority Date: 05/18/2005
• Status: Active Grant

• Current Assignee: Rachelle R Van Wyk, Robert A Van Wyk
• Original Assignee: Rachelle R Van Wyk, Robert A Van Wyk
• Inventors: Van Wyk, Rachelle R., Van Wyk, Robert A.
• Primary Examiner(s): Smith; Ruth S
• Assistant Examiner(s): REARDON, ROCHELLE D
• Application Number:
  US11/432,351
• Publication Number:
  US 20070167753A1
• Time in Patent Office: 1,579 Days
• Field of Search: 128/870, 128/876, 600/300, 600/304, 600/407, 600/437, 600/453, 600/454, 600/456, 600/586, 600/588, 600/459, 607/902
• US Class Current: 600/459
• CPC Class Codes: A61B 2503/02 Foetus
• CPC Class Codes: A61B 2562/164 the sensor is mounted in or on a conformable substrate or carrier
• CPC Class Codes: A61B 5/02411 of foetuses
• CPC Class Codes: A61B 5/1107 Measuring contraction of parts of the body, e.g. organ, muscle apparatus for measuring work or force in general G01L
• CPC Class Codes: A61B 5/4356 Assessing uterine contractions A61B5/033 takes precedence
• CPC Class Codes: A61B 5/4362 Assessing foetal parameters
• CPC Class Codes: A61B 5/68 Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
• CPC Class Codes: A61B 5/6823 Trunk, e.g., chest, back, abdomen, hip
• CPC Class Codes: A61B 5/6831 Straps, bands or harnesses
• CPC Class Codes: A61B 7/00 Instruments for auscultation
• CPC Class Codes: A61B 8/02 Measuring pulse or heart rate
• CPC Class Codes: A61B 8/0866 involving foetal diagnosis; pre-natal or peri-natal diagnosis of the baby
• CPC Class Codes: A61B 8/4227 characterised by straps, belts, cuffs or braces
• CPC Class Codes: A61B 8/4236 characterised by adhesive patches
• CPC Class Codes: A61B 8/4281 characterised by sound-transmitting media or devices for coupling the transducer to the tissue

Abstract

An improved patient monitoring system is described herein. In particular, the present invention provides an improved system, method, and kit for positioning and removably mounting, often repeatedly, a monitor transducer on a patient, for example, an external fetal monitor used during pregnancy and childbirth labor. The improved system of the present invention avoids many of the disadvantages of conventional monitoring systems in that it maintains transducer position during patient movement, allows the position of the transducer to be changed without repositioning the patient, allows for simple and expeditious adjustment so as to maximize signal quality without causing patient discomfort, eliminates the need for a belt circumferentially disposed about the patient'"'"'s abdomen, and can be applied to a wide array of body types, including patients having round abdomens. The system, method, and kit of the present invention is not only both efficient and effective but also economical.

Claims

1. An external fetal monitoring system comprising:

a. two or more discrete anchor strips characterized as having opposed medial and lateral edges and opposed upper and lower surfaces, wherein each of said anchor strips is comprised of (i) a first layer of adhesive material adapted for application to the skin in medical applications and configuring said anchor strip lower surface for attachment to a patient'"'"'s skin, and (ii) a second layer composed of a compliant material having one or more fasteners disposed thereon and configuring said anchor strip upper surface for attachment to a corresponding fastener receiver, wherein said first and second layers are permanently joined to each other;

b. one or more discrete elongate elastomeric straps characterized as having opposed first and second ends and opposed upper and lower surfaces, wherein each end of each of said one or more straps has one or more fastener receivers disposed on the lower surface thereof and is configured for removable attachment to the one or more fasteners of said anchor strip second layer, wherein said elastomeric strap fastener receivers and anchor strip fasteners mate to form a fastener pair; and

c. one or more monitor transducers mounted to said one or more elastomeric straps by a retaining means disposed on one side thereof, said retaining means for laterally moving said one or more monitor transducers along the length of said one or more elastomeric straps so that said one or more transducers can be rapidly repositioned.

2. The system of claim 1, wherein said retaining means comprises one or more members through which at least one of said one or more elastomeric straps is fed, such that said one or more transducers can slide from one end of said one or more elastomeric straps to the other.

3. The system of claim 1, wherein said one or more fasteners comprise a plurality of hook-shaped protrusions and said one or more fastener receivers comprise a plurality of eyes or pile fabric pad.

4. The system of claim 1, wherein said one or more fasteners comprise a plurality of eyes or a pile fabric pad and said one or more fastener receivers comprise a plurality of hook-shaped protrusions.

5. The system of claim 1, wherein at least one of said one or more fasteners comprises a button and at least one of said one or more fastener receivers comprises a button hole.

6. The system of claim 1, wherein said one or more fasteners and said one or more fastener receivers comprise mating snaps.

7. The system of claim 1, wherein each anchor strip'"'"'s lateral edge comprises a plurality of elongated, laterally extending tabs.

8. The system of claim 1, wherein said compliant material is polymeric foam.

9. The system of claim 1, wherein at least one of said one or more elastomeric straps comprises a fabric belt.

10. The system of claim 1, wherein at least one of said one or more monitor transducers comprises a sonic or ultrasonic transducer.

11. The system of claim 1, wherein at least one of said one or more monitor transducers comprises an acoustic signal transducer and a pressure signal transducer.

12. A method for positioning at least one monitor transducer on a patient comprising the steps of:

a. providing the external fetal monitoring system of claim 1;

b. positioning said two or more anchor strips on a patient'"'"'s abdomen in a substantially vertical and laterally spaced fashion and attaching said strips to said patient'"'"'s abdomen by means of said first layer adhesive material;

c. extending said one or more elastomeric straps in a substantially horizontal fashion across the patient'"'"'s abdomen, transverse to said anchor strips, and attaching the first and second ends of said one or more elastomeric straps to said anchor strips by means of said mating fasteners and fastener receivers; and

d. positioning said one or more transducers along the length of said one or more elastomeric straps so as to measure a desired parameter.

13. The method of claim 12, further comprising the step of feeding at least one of said one or more elastomeric straps through the retaining means provided on said one or more monitor transducers, to thereby adapt said one or more transducers for sliding from one end said one or more elastomeric straps to the other.

14. The method of claim 12, further including the step of adjusting said one or more transducers without detaching said elastomeric straps from said anchor strips.

15. The method of claim 12, wherein said one or more transducers comprise an acoustic signal monitor and a pressure signal monitor, further wherein step (d) includes the step of measuring fetal heartbeat and intrauterine contractions by means of said acoustic signal monitor and pressure signal monitor.

16. The method of claim 12, wherein step (d) includes the step of measuring fetal heartbeat.

17. The method of claim 12, wherein step (d) includes the step of measuring intrauterine contractions.

18. A kit for external fetal monitoring comprising:

a. one or more pairs of discrete anchor strips characterized as having opposed medial and lateral edges and opposed upper and lower surfaces, wherein each of said anchor strips is comprised of (i) a first layer of adhesive material adapted for application to the skin in medical applications and configuring said anchor strip lower surface for attachment to a patient'"'"'s skin, and (ii) a second layer composed of a compliant material having one or more fasteners disposed thereon and configuring said anchor strip upper surface for attachment to a corresponding fastener receiver, wherein said first and second layers are permanently joined to each other;

b. one or more elastomeric straps characterized as having opposed first and second ends and opposed upper and lower surfaces, wherein each end of each of said one or more straps has one or more fastener receivers disposed on the lower surface thereof and is configured for removable attachment to the one or more fasteners of said anchor strip second layer, wherein said elastomeric strap fastener receivers and anchor strip fasteners receivers mate to form a fastener pair; and

c. one or more monitor transducers mounted to said one or more elastomeric straps by a retaining means disposed on one side thereof, said retaining means for laterally moving said one or more monitor transducers along the length of said one or more elastomeric straps so that said one or more transducers can be rapidly repositioned.

19. An external fetal monitoring system comprising:

a. two or more discrete anchor strips characterized as having opposed medial and lateral edges and opposed upper and lower surfaces, wherein each of said anchor strips is comprised of (i) a first layer of adhesive material adapted for application to the skin in medical applications and configuring said lower surface for attachment to a patient'"'"'s skin and (ii) a second layer composed of a compliant material having one or more fasteners disposed thereon and configuring said anchor strip upper surface for attachment to a corresponding fastener receiver, wherein said first and second layers are permanently joined to each other;

b. one or more discrete elongate elastomeric straps, each comprised of a first portion and a second portion, wherein each first and second portion is characterized as having opposed first and second ends and opposed upper and lower surfaces wherein (i) the first ends of said first and second portions are adapted for attachment to a transducer and (ii) the second ends of said first and second portions have one or more fastener receivers disposed on the lower surface thereof and are configured for removable attachment to the one or more fasteners of said anchor strip second layer, wherein said elastomeric strap fastener receivers and anchor strip fasteners mate to form a fastener pair; and

c. one or more monitor transducers, each of which is mounted to said second ends of said first and second elastomeric strap portions by means of one or more retaining means through which said second ends are fed, said retaining means for rapidly repositioning said one or more monitor transducers through adjustment of the relative lengths of said first and second strap portions.