US20050101969A1 - Vacuum extraction monitoring - Google Patents
Vacuum extraction monitoring Download PDFInfo
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- US20050101969A1 US20050101969A1 US10/988,675 US98867504A US2005101969A1 US 20050101969 A1 US20050101969 A1 US 20050101969A1 US 98867504 A US98867504 A US 98867504A US 2005101969 A1 US2005101969 A1 US 2005101969A1
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- pressure
- vacuum
- pump
- attachable
- monitor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/42—Gynaecological or obstetrical instruments or methods
- A61B17/44—Obstetrical forceps
- A61B17/442—Obstetrical forceps without pivotal connections, e.g. using vacuum
Definitions
- the invention relates to business methods, and more specifically, the invention relates to business methods that reduce liability exposure for physicians that perform vacuum extraction deliveries.
- Vacuum extraction in labor/delivery suites has become a well-accepted and commonly performed form of vaginal delivery because it may be less hazardous to the mother and fetus than forceps extraction.
- forceps extraction there is the potential for harm to the fetus from prolonged suction application to the fetal head.
- guidelines governing the amount of vacuum pressure that should be applied to the fetal head as well as guidelines regarding the duration of time that the vacuum pressure is applied to the fetal head during vacuum extraction (these guidelines are printed by the manufacturers of vacuum devices, and are also available in medical literature).
- Exemplary effects of vacuum extraction on an infant during delivery include: fetal hypoxia, retinal hemorrhage, chignon, scalp marking and abrasion, cephalhematoma and subcutaneous hematoma, neonatal jaundice, intra-cranial hemorrhage, shoulder dystocia, and subgaleal hemorrhage.
- Subgaleal hematoma is a particularly dangerous condition.
- Subgaleal hematoma is formed when bleeding occurs into the potential space beneath the aponeurosis of an infant's scalp. It may be a life threatening condition for a newborn baby, and is often considered the most serious complication associated with the vacuum extraction.
- subgaleal hematoma arises because the subaponeurotic space stretches over the whole part of the cranial vault of the infant, and a large proportion of the baby's blood volume can accumulate in this space (typically, from damage to the emissary veins). Although subgaleal hematoma may occur after forceps and natural deliveries, incidents of subgaleal hematoma are increased considerably in vacuum extractions since the introduction of the vacuum device pulls the aponeurosis from the cranium and may injure the underlying veins. Furthermore, because hemorrhaging into the subgaleal space may occur slowly, and for several hours following delivery, bleeding into the subgaleal space may be difficult to initially detect.
- the present invention provides a solution for reducing the value of a claim against those associated with a fetal delivery, and also reduces the likelihood of an erroneous claim being filed against these persons.
- the invention provides technical advantages as a system, device and method that enables a fetal extraction monitor that is used to monitor fetal heart rates to also monitor a vacuum pressure in a vacuum device.
- One embodiment of the invention is a vacuum extraction monitoring system for aiding a person who is assisting with fetal extraction.
- the system includes a suction device that is enabled for vacuum attachment to a fetus, a pump that is capable of producing a vacuum pressure, a tubing that fluidly couples the suction device to the pump, a means for detecting a vacuum pressure coupled to the suction device, and a fetal monitor for automatically displaying a vacuum pressure, the fetal monitor being coupled to the means for detecting a vacuum pressure.
- the invention is a method of aiding a person who is assisting with fetal extraction.
- the method includes attaching a suction device to a fetus by placing the vacuum device on the fetus and then inducing a vacuum pressure in the suction device, detecting the vacuum pressure, and automatically displaying the vacuum pressure on a fetal monitor.
- FIG. 1 provides a block diagram of a vacuum device, illustrating systems incorporated by the invention
- FIG. 2 provides a more detailed block schematic of a vacuum device
- FIG. 3 provides a flowchart of a recording algorithm which illustrates one embodiment of the invention
- FIG. 5 provides a block diagram of an adapter assembly which provides existing vacuum devices the features of the invention, and is accordingly another embodiment of the invention
- FIG. 6 illustrates a pump attachable device capable of attachment to an electrical pump
- FIG. 7 as a tube attachable device
- FIG. 8 illustrates a pump attachable device configured to attach to a hand pump, such as a KIWI hand pump.
- FIG. 1 provides a block diagram of a vacuum device 100 , illustrating systems incorporated by the invention.
- a pump 110 which could be a manually activated hand pump, an electric pump, or any other type of air pump, is fluidly coupled to a suction device 120 .
- the suction device 120 is attachable to a fetus, being preferably attachable to fetal head.
- the suction device 120 is preferably a cup, such as a SILC, a SILASPIC, a SOFT-CUP, or a MALMSTROM-type cup, for example.
- Fluid coupling between the suction device 120 and the pump 110 may be accomplished by a tube 112 , and is preferably a plastic tube.
- a recording device 130 which may be a monitor, an enhanced monitor, or a custom-developed device for example, provides a user the ability to monitor air pressures and record air pressures. Accordingly, air pressures may be measured in the monitor 130 , or in the tube 112 , or in the pump 110 . Furthermore, in FIG. 1 , a cable 116 couples the tube 112 to the monitor 130 . Accordingly, in this embodiment, an air pressure is detected in the tube 112 and converted into information by a device such as a transducer. Next, the detected pressure is passed as information along the cable 116 to the monitor 130 .
- the coupling is enabled to detect the pressure in the tubing (whether the pressure is actually detected in the tubing 112 , the suction device 120 , or the pump 110 ).
- the coupling 114 is a plastic tube with a transducer therein.
- a transducer in the coupling detects a pressure, and then produces a mechanical or electrical signal based on the pressure detected, or other transportable signal based on the detected pressure (such as a wireless radio frequency communication).
- a processor 140 was coupled to the pressure gauge 132 , and provides a means for processing data from the pressure gauge 132 and associating that data with various tables, algorithms, and other information. Furthermore, processor 140 may drive other systems such as a display 136 , a printing device 138 , warning system 144 , or a safety system 142 , or send information to a recording device 134 .
- the processor is a digital signal processor (DSP), a Pentium processor, or a Strong Arm processor, for example.
- DSP digital signal processor
- the processor 140 retrieves various tables, algorithms, and other information from the recording device 134 , that preferably stores an electronic record.
- the recording device 134 is embodied as memory, such as RAM, ROM, or removable memory such as Flash RAM, a Memory Stick, or a CD ROM.
- the printing device 138 provides the ability to print numbers or graphs indicating a pressure over time, progressive pressures detected over time. Preferably, the printing device 138 generates these prints on paper. Furthermore, although illustrated as being integrated into the recording device 130 , it should be understood that the printing device 138 may be located externally from the recording device 130 .
- the warning system 144 is for producing a warning when a predetermined pressure or pressures are detected.
- the predetermined pressure will be a vacuum pressure, which is lower than a predetermined vacuum pressure, such as 0.2 kgms/cm 2 -0.8 kgms/cm 2 , depending on the stage of delivery.
- the warning may be embodied as a light, a sound, or a voice, for example. A light may flash at different rates, or present different colors, or present different intensities as pressure changes in the tube. Similarly, a sound may change in tone as different pressures are detected, or a voice may verbally indicate a pressure or a warning condition.
- the warning system may be used to trigger and provide information to the safety system 142 .
- FIG. 3 provides a flowchart of a recording algorithm 300 .
- the recording algorithm 300 records a pressure, which exists in a vacuum device.
- the recording algorithm 300 creates a permanent record of the pressure which was recorded in the record pressure act 310 .
- FIG. 4 illustrates a block flow diagram of a vacuum device algorithm 400 that implements one embodiment of the invention.
- the vacuum device algorithm 400 comprises a pump algorithm 402 for illustrating acts performed with a vacuum device pump, and a monitor algorithm 405 illustrating acts associated with a recording device.
- the vacuum device algorithm 400 begins in a pump algorithm 402 .
- the pump algorithm 402 proceeds to an initiate vacuum act 420 .
- a vacuum pressure is created in the vacuum device by manually actuating a manual pump, or by engaging the vacuum switch or trigger in an electric pump.
- the next act in the pump algorithm 402 changes the vacuum pressure. This is accomplished in an alter vacuum pressure act 425 , and is typically employed as a result of a response received from the monitor algorithm 405 .
- altering the vacuum pressure may not be necessary during a vacuum extraction procedure, and thus the alter vacuum pressure act 425 should especially be viewed as an optional act for the present embodiment (although the only needed acts are explicitly articulated in the claims).
- a disengage vacuum act 430 is performed when the pressure in the vacuum device is returned to at least local atmospheric pressure. Furthermore, the pressure may be raised to a pressure greater than local atmospheric pressure to encourage the suction device to separate from the fetus. Then, the vacuum device algorithm 400 and pump algorithm 402 end together in a remove suction device act 435 , in which the suction device is removed from the fetus. Furthermore, in the remove suction device act 435 the recording device may be disengaged, and the record of the pressures detected during the vacuum device algorithm 400 may be stored in a permanent medical record, which may be a physical paper record and/or an electronic record.
- the recorded pressures are monitored and processed in a process recorded pressure act 460 .
- the process recorded pressure act 460 evaluates the detected pressure in a warning system, and may direct the displaying or printing of additional information in response to the warning system.
- the process-recorded pressure 460 may include a sub-act of displaying the processed information on the display device, such as a monitor.
- the process recorded pressure act 460 may direct a pressure change, such as a lower pressure, or an immediate return to local atmospheric pressure, in a direct pressure change act 465 .
- the direct pressure change act 465 produces the electrical or mechanical signals needed to implement the alter-vacuum pressure act 425 .
- the invention provides the ability to accurately measure, record, and trace pressure events that transpire in a vacuum device during vacuum extraction. Accordingly, the invention assist physicians, hospitals, and other delivery personnel in the defense of accusation that proper guidelines were not followed during the vacuum extraction. Furthermore, those who suffer from improper vacuum extraction also have access to a permanent medical record, which should facilitate mediated settlements, and avoid the costs of lengthy discovery and emotionally scaring litigation. Also, because data will be collected with each vacuum extraction, the guidelines for the conduct of a vacuum extraction may be changed and improved to more accurately be able to predict safe guidelines for a vacuum extraction delivery.
- FIG. 5 provides a block diagram of an adapter assembly 500 , which provides existing vacuum devices access to advantages of the invention, and is accordingly another embodiment of the invention.
- the adapter assembly 500 comprises a pump 510 fluidly coupled to a suction device 520 by a tubing 525 .
- a display device 530 is connected to the pump 510 .
- the display device 530 is coupled to the pump 510 via an adapter to the pump 510 .
- FIG. 6 illustrates a pump attachable device 600 capable of attachment to an electrical pump 655 .
- the pump attachable device 600 has an adapter 610 , such as the threaded fittings illustrated in FIG. 6 .
- the pump attachable device 600 has a pressure transducer 620 , which detects a pressure and converts the detected pressure to a mechanical or electrical signal capable of being transferred to a monitor (not shown) via a cable 630 .
- the cable 630 includes a plug 635 capable of attachment to a monitor or other recording device.
- a pump system 650 having a pump attachable device attached thereto.
- the pump system 650 includes an electric pump 655 such as a MITYVAC, or disposable MTFYVAC, for example.
- the electric pump 655 has a front end 665 , which has a cavity for supporting other devices and for transporting the pressures, including the vacuum pressure, created by the electric pump 655 .
- the tube attachable device 700 includes a first end 705 , and a second end 707 .
- the first end 705 is preferably configured to either attach to a plastic tube section, or a suction device.
- the second end 707 is preferably configured to attach to a tube, or a front end such as the front end 765 that is adapted to receive the second end 707 .
- the tube attachable device 700 includes tubing 740 , which is preferably plastic tubing.
- the tubing 740 includes a pressure gauge receiver 760 . Accordingly, a transducer/pressure gauge 720 is inserted into the tubing 740 and secured in the tubing by an adapter 710 . Furthermore, pressures detected by the pressure transducer 720 are converted into a data signal that is sent to a recording device along a cable 730 .
- the cable 730 also includes a plug 735 , which is connectable to the recording device monitor 780 , or to a second plug 737 .
- the plug 737 couples an extension cord 738 to a second plug 739 .
- the second plug 739 is also attachable to the recording device 780 at a plug socket 788 .
- the recording device 780 may produce a printed-paper record 782 , as well as a visual display 784 .
- the printed-paper record 782 or the visual display 784 may print or display numbers, graphical representation or other indicia of the pressures being detected in the vacuum device.
- the recording device 780 provides a warning device 786 which could produce a light, sound, or a vocalized recording of a warning to those assisting with the fetal extraction.
Abstract
The invention provides technical advantages as a system, device and method that enables a fetal extraction monitor that is used to monitor fetal heart rates to also monitor a vacuum pressure in a vacuum device.
Description
- The present invention is a divisional of and claims priority from to co-pending U.S. patent application Ser. No. 09/727,124, entitled Vacuum Extraction Monitor with Attachment For Hand Pump also by Dr. Victor Vines, filed on Nov. 30, 2000.
- The invention relates to business methods, and more specifically, the invention relates to business methods that reduce liability exposure for physicians that perform vacuum extraction deliveries.
- When operative vaginal deliveries are necessary, there are presently two options—forceps extraction, or vacuum extraction. Vacuum extraction in labor/delivery suites has become a well-accepted and commonly performed form of vaginal delivery because it may be less hazardous to the mother and fetus than forceps extraction. However, there is the potential for harm to the fetus from prolonged suction application to the fetal head. In addition, there are guidelines governing the amount of vacuum pressure that should be applied to the fetal head, as well as guidelines regarding the duration of time that the vacuum pressure is applied to the fetal head during vacuum extraction (these guidelines are printed by the manufacturers of vacuum devices, and are also available in medical literature).
- Exemplary effects of vacuum extraction on an infant during delivery include: fetal hypoxia, retinal hemorrhage, chignon, scalp marking and abrasion, cephalhematoma and subcutaneous hematoma, neonatal jaundice, intra-cranial hemorrhage, shoulder dystocia, and subgaleal hemorrhage. Subgaleal hematoma is a particularly dangerous condition. Subgaleal hematoma is formed when bleeding occurs into the potential space beneath the aponeurosis of an infant's scalp. It may be a life threatening condition for a newborn baby, and is often considered the most serious complication associated with the vacuum extraction. One danger associated with subgaleal hematoma arises because the subaponeurotic space stretches over the whole part of the cranial vault of the infant, and a large proportion of the baby's blood volume can accumulate in this space (typically, from damage to the emissary veins). Although subgaleal hematoma may occur after forceps and natural deliveries, incidents of subgaleal hematoma are increased considerably in vacuum extractions since the introduction of the vacuum device pulls the aponeurosis from the cranium and may injure the underlying veins. Furthermore, because hemorrhaging into the subgaleal space may occur slowly, and for several hours following delivery, bleeding into the subgaleal space may be difficult to initially detect.
- Accordingly, there are occasions when a fetus does poorly during or after vacuum extraction. Whether or not proper guidelines were followed during the delivery process, sometimes a legal claim is made against a doctor, hospital, nurses, and others associated with the delivery, alleging that the guidelines regarding the use of the vacuum device were not followed. The present invention provides a solution for reducing the value of a claim against those associated with a fetal delivery, and also reduces the likelihood of an erroneous claim being filed against these persons.
- The invention provides technical advantages as a system, device and method that enables a fetal extraction monitor that is used to monitor fetal heart rates to also monitor a vacuum pressure in a vacuum device. One embodiment of the invention is a vacuum extraction monitoring system for aiding a person who is assisting with fetal extraction. The system includes a suction device that is enabled for vacuum attachment to a fetus, a pump that is capable of producing a vacuum pressure, a tubing that fluidly couples the suction device to the pump, a means for detecting a vacuum pressure coupled to the suction device, and a fetal monitor for automatically displaying a vacuum pressure, the fetal monitor being coupled to the means for detecting a vacuum pressure. In another embodiment, the invention is a method of aiding a person who is assisting with fetal extraction. The method includes attaching a suction device to a fetus by placing the vacuum device on the fetus and then inducing a vacuum pressure in the suction device, detecting the vacuum pressure, and automatically displaying the vacuum pressure on a fetal monitor.
- Of course, other features and embodiments of the invention will be apparent to those of ordinary skill in the art. After reading the specification, and the detailed description of the exemplary embodiment, these persons will recognize that similar results can be achieved in not dissimilar ways. Accordingly, the detailed description is provided as an example of the best mode of the invention, and it should be understood that the invention is not limited by the detailed description. Accordingly, the invention should be read as being limited only by the claims.
- Various aspects of the invention, as well as an embodiment, are better understood by reference to the following EXEMPLARY EMBODIMENT OF A BEST MODE. To better understand the invention, the EXEMPLARY EMBODIMENT OF A BEST MODE should be read in conjunction with the drawings in which:
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FIG. 1 provides a block diagram of a vacuum device, illustrating systems incorporated by the invention; -
FIG. 2 provides a more detailed block schematic of a vacuum device; -
FIG. 3 provides a flowchart of a recording algorithm which illustrates one embodiment of the invention; -
FIG. 4 illustrates a block flow diagram of a vacuum device algorithm that implements one embodiment of the invention; -
FIG. 5 provides a block diagram of an adapter assembly which provides existing vacuum devices the features of the invention, and is accordingly another embodiment of the invention; -
FIG. 6 illustrates a pump attachable device capable of attachment to an electrical pump; -
FIG. 7 as a tube attachable device; and -
FIG. 8 illustrates a pump attachable device configured to attach to a hand pump, such as a KIWI hand pump. - The invention allows physicians to measure and record the amount of pressure and the duration of pressure applied to a fetus' head during vacuum extraction, it enables improved communication between the nurse and delivering physician thus improving the safety of the vacuum assisted delivery, and the invention lowers litigation costs because a permanent record of vacuum pressures applied during delivery is created. Accordingly, the invention provides systems, devices, and methods for aiding a person who is assisting with fetal extraction. The invention is attachable to a vacuum device, and may incorporate a vacuum device. Furthermore, the pressure inside the vacuum device is monitored and recorded by a recording device.
- Preferably, the invention provides at least the features of monitoring and recording pressures in a suction device used for vacuum-based fetal extraction. Accordingly,
FIG. 1 provides a block diagram of avacuum device 100, illustrating systems incorporated by the invention. Apump 110 which could be a manually activated hand pump, an electric pump, or any other type of air pump, is fluidly coupled to asuction device 120. Thesuction device 120 is attachable to a fetus, being preferably attachable to fetal head. Thesuction device 120 is preferably a cup, such as a SILC, a SILASPIC, a SOFT-CUP, or a MALMSTROM-type cup, for example. Fluid coupling between thesuction device 120 and thepump 110 may be accomplished by atube 112, and is preferably a plastic tube. - A
recording device 130, which may be a monitor, an enhanced monitor, or a custom-developed device for example, provides a user the ability to monitor air pressures and record air pressures. Accordingly, air pressures may be measured in themonitor 130, or in thetube 112, or in thepump 110. Furthermore, inFIG. 1 , acable 116 couples thetube 112 to themonitor 130. Accordingly, in this embodiment, an air pressure is detected in thetube 112 and converted into information by a device such as a transducer. Next, the detected pressure is passed as information along thecable 116 to themonitor 130. - With an initial understanding of the
vacuum device 100, one may gain a better understanding of the invention by referring to a more detailed block schematic. Accordingly,FIG. 2 provides a more detailed block schematic of avacuum device 200. Thevacuum device 200 has apump 110 in fluid communication with thesuction device 120 through atubing 112. Thetubing 112, although not illustrated, may contain therein a wire for coupling thepump 110 to the suction device 120 (to provide a device which may support traction tension between thepump 110 and the suction device 120). Acoupling 114 is shown dividing thetubing 112. However, it should be understood that thecoupling 114 need not be intrusive of thetubing 112, and could be embodied as a cap/tap, for example. In any event, the coupling is enabled to detect the pressure in the tubing (whether the pressure is actually detected in thetubing 112, thesuction device 120, or the pump 110). Preferably, thecoupling 114 is a plastic tube with a transducer therein. Although not shown inFIG. 2 , a transducer in the coupling detects a pressure, and then produces a mechanical or electrical signal based on the pressure detected, or other transportable signal based on the detected pressure (such as a wireless radio frequency communication). - The
cable 116 provides a commutative connection between thecoupling 114 and apressure gauge 132 located in therecording device 130. Of course, although thepressure gauge 132 is illustrated as being located in therecording device 130, thepressure gauge 132 could in fact be located in thecoupling 114, or along thecable 116. Thus, thepressure gauge 132 functions as a mechanical or electrical signal receiver, which translates a mechanical signal, or electrical signal, or a wireless signal into data that is associated with a pressure. - A
processor 140 was coupled to thepressure gauge 132, and provides a means for processing data from thepressure gauge 132 and associating that data with various tables, algorithms, and other information. Furthermore,processor 140 may drive other systems such as adisplay 136, aprinting device 138,warning system 144, or asafety system 142, or send information to arecording device 134. Preferably, the processor is a digital signal processor (DSP), a Pentium processor, or a Strong Arm processor, for example. Theprocessor 140 retrieves various tables, algorithms, and other information from therecording device 134, that preferably stores an electronic record. Preferably, therecording device 134 is embodied as memory, such as RAM, ROM, or removable memory such as Flash RAM, a Memory Stick, or a CD ROM. - The
display 136 provides real time information, such as pressures over time, dangerous conditions detected (or other information) to persons assisting with the extraction of the fetus. Preferably, thedisplay 136 is a cathode ray video screen, or a plasma screen. - The
printing device 138 provides the ability to print numbers or graphs indicating a pressure over time, progressive pressures detected over time. Preferably, theprinting device 138 generates these prints on paper. Furthermore, although illustrated as being integrated into therecording device 130, it should be understood that theprinting device 138 may be located externally from therecording device 130. - The
safety system 142 causes the implementation of a safety pressure release valve preferably located on thepump 110. When triggered, thesafety system 142 may release some of the pressure, or all of the pressure thus returning the pressure inside thetubing 112 to the local atmospheric pressure (or room pressure). Thesafety system 142 may be embodied as software algorithm for execution in memory, or as mechanical device. - The
warning system 144 is for producing a warning when a predetermined pressure or pressures are detected. Typically, the predetermined pressure will be a vacuum pressure, which is lower than a predetermined vacuum pressure, such as 0.2 kgms/cm2-0.8 kgms/cm2, depending on the stage of delivery. The warning may be embodied as a light, a sound, or a voice, for example. A light may flash at different rates, or present different colors, or present different intensities as pressure changes in the tube. Similarly, a sound may change in tone as different pressures are detected, or a voice may verbally indicate a pressure or a warning condition. Furthermore, the warning system may be used to trigger and provide information to thesafety system 142. - A better understanding of the invention may be achieved by examining the operation of the invention.
FIG. 3 provides a flowchart of arecording algorithm 300. First, in arecord pressure act 310, therecording algorithm 300 records a pressure, which exists in a vacuum device. Then, in a store recordedpressure act 320, therecording algorithm 300 creates a permanent record of the pressure which was recorded in therecord pressure act 310. - An even better understanding of the invention may be realized by examining the processes flow of a vacuum device embodied according to the invention. Accordingly,
FIG. 4 illustrates a block flow diagram of avacuum device algorithm 400 that implements one embodiment of the invention. Thevacuum device algorithm 400 comprises apump algorithm 402 for illustrating acts performed with a vacuum device pump, and amonitor algorithm 405 illustrating acts associated with a recording device. Thevacuum device algorithm 400 begins in apump algorithm 402. - The
pump algorithm 402 is initiated in an engagemonitor act 410. The engage monitor act may include attaching a cable between a vacuum pump and a recording device, and then turning on the recording device. After the engagemonitor act 410, thepump algorithm 402 proceeds to an applysuction device act 415 in which a suction device is attached to a fetus, and preferably a fetal head. It should be noted that in the applysuction device act 415, if a disposable MITYVAC is being used in the procedure, adapters should be attached to suction tubing of the vacuum device and the disposable MITYVAC assembly. Prior to applying the suction device to the fetus, the applysuction device act 415 calibrates, or zeros, the monitor so that the pressure detected prior to applying a vacuum to the fetus is recognized as being the local atmospheric pressure. Likewise, prior to the application of a vacuum to a fetus, the monitor is initialized, or “zeroed,” to local atmospheric conditions. - Following the apply
suction device act 415, thepump algorithm 402 proceeds to an initiatevacuum act 420. In the initiate vacuum act 420 a vacuum pressure is created in the vacuum device by manually actuating a manual pump, or by engaging the vacuum switch or trigger in an electric pump. The next act in thepump algorithm 402 changes the vacuum pressure. This is accomplished in an altervacuum pressure act 425, and is typically employed as a result of a response received from themonitor algorithm 405. Of course, altering the vacuum pressure may not be necessary during a vacuum extraction procedure, and thus the altervacuum pressure act 425 should especially be viewed as an optional act for the present embodiment (although the only needed acts are explicitly articulated in the claims). - Next, a
disengage vacuum act 430 is performed when the pressure in the vacuum device is returned to at least local atmospheric pressure. Furthermore, the pressure may be raised to a pressure greater than local atmospheric pressure to encourage the suction device to separate from the fetus. Then, thevacuum device algorithm 400 andpump algorithm 402 end together in a removesuction device act 435, in which the suction device is removed from the fetus. Furthermore, in the removesuction device act 435 the recording device may be disengaged, and the record of the pressures detected during thevacuum device algorithm 400 may be stored in a permanent medical record, which may be a physical paper record and/or an electronic record. - The
monitor algorithm 405 initiates in a detectpressure act 450, which begins in response to the initialization of the recording device in the engagemonitor act 410. In the detect pressure act 450 a pressure in the vacuum device is detected, which will typically be between a room (or atmospheric) pressure and vacuum pressure (meaning a pressure lower than the local atmospheric pressures). Next, thevacuum device algorithm 400 continues to arecord pressure act 455. In therecord pressure act 455 the pressure detected in the detectpressure act 450 is automatically recorded (or stored), preferably by an electronic means (such as a memory) or by a paper means. Furthermore, therecord pressure act 455 may include the displaying of the recorded pressure on a monitor or other display. - The recorded pressures are monitored and processed in a process recorded
pressure act 460. The process recordedpressure act 460 evaluates the detected pressure in a warning system, and may direct the displaying or printing of additional information in response to the warning system. [The process-recordedpressure 460 may include a sub-act of displaying the processed information on the display device, such as a monitor.] Likewise, if the process is recorded at 460 determines if the detected pressure exceeds a predetermined pressure, the process recordedpressure act 460 may direct a pressure change, such as a lower pressure, or an immediate return to local atmospheric pressure, in a directpressure change act 465. The directpressure change act 465 produces the electrical or mechanical signals needed to implement the alter-vacuum pressure act 425. - The invention provides the ability to accurately measure, record, and trace pressure events that transpire in a vacuum device during vacuum extraction. Accordingly, the invention assist physicians, hospitals, and other delivery personnel in the defense of accusation that proper guidelines were not followed during the vacuum extraction. Furthermore, those who suffer from improper vacuum extraction also have access to a permanent medical record, which should facilitate mediated settlements, and avoid the costs of lengthy discovery and emotionally scaring litigation. Also, because data will be collected with each vacuum extraction, the guidelines for the conduct of a vacuum extraction may be changed and improved to more accurately be able to predict safe guidelines for a vacuum extraction delivery.
- It will sometimes be advantageous to provide existing vacuum devices the ability to access the advantages provided by the invention.
FIG. 5 provides a block diagram of anadapter assembly 500, which provides existing vacuum devices access to advantages of the invention, and is accordingly another embodiment of the invention. Theadapter assembly 500 comprises apump 510 fluidly coupled to asuction device 520 by atubing 525. Adisplay device 530 is connected to thepump 510. Preferably, thedisplay device 530 is coupled to thepump 510 via an adapter to thepump 510. Better understanding of theadapter assembly 500 may be achieved by examining specific embodiment. -
FIG. 6 illustrates a pumpattachable device 600 capable of attachment to anelectrical pump 655. The pumpattachable device 600 has anadapter 610, such as the threaded fittings illustrated inFIG. 6 . Furthermore, the pumpattachable device 600 has apressure transducer 620, which detects a pressure and converts the detected pressure to a mechanical or electrical signal capable of being transferred to a monitor (not shown) via acable 630. Thecable 630 includes aplug 635 capable of attachment to a monitor or other recording device. - Also, illustrated in
FIG. 6 is apump system 650 having a pump attachable device attached thereto. Thepump system 650 includes anelectric pump 655 such as a MITYVAC, or disposable MTFYVAC, for example. Theelectric pump 655 has afront end 665, which has a cavity for supporting other devices and for transporting the pressures, including the vacuum pressure, created by theelectric pump 655. - The
front end 665 has thereon apressure gauge receiver 660. Typically, thepressure gauge receiver 660 accepts a pressure gauge that mechanically detects a pressure, which is then displayed for those performing the vacuum procedures. In operation of one embodiment of the invention, the pressure gauge is removed from the electric pump, typically by unscrewing the pressure gauge, and the pumpattachable device 600 is then inserted into thepressure gauge receiver 660. Also provided by thefront end 665 is apressure release valve 670. Thepressure release valve 670 allows the inflow of air into the front end, and particularly into the cavity of the front end, in order to increase the pressure in the vacuum device. - Another embodiment of the invention is illustrated in
FIG. 7 as a tubeattachable device 700. The tubeattachable device 700 includes afirst end 705, and asecond end 707. Thefirst end 705 is preferably configured to either attach to a plastic tube section, or a suction device. Thesecond end 707 is preferably configured to attach to a tube, or a front end such as thefront end 765 that is adapted to receive thesecond end 707. The tubeattachable device 700 includestubing 740, which is preferably plastic tubing. - The
tubing 740 includes apressure gauge receiver 760. Accordingly, a transducer/pressure gauge 720 is inserted into thetubing 740 and secured in the tubing by anadapter 710. Furthermore, pressures detected by thepressure transducer 720 are converted into a data signal that is sent to a recording device along acable 730. Thecable 730 also includes aplug 735, which is connectable to therecording device monitor 780, or to asecond plug 737. Theplug 737 couples anextension cord 738 to asecond plug 739. Thesecond plug 739 is also attachable to therecording device 780 at aplug socket 788. - The vacuum device illustrated in
FIG. 7 includes apump 755, which provides a disposable MITYVAC, and apressure gauge 760, which is fitted into thefront end 765. Thus, the vacuum device provides a physician the advantage of having a mechanical visual display provided by the gauge 760 (thus requiring little change by those who are accustom to viewing the mechanical gate 760), as well as providing mechanical and electric displays and printouts of the recorded pressures while therecording device 780. - The
recording device 780 may produce a printed-paper record 782, as well as avisual display 784. Of course, the printed-paper record 782 or thevisual display 784 may print or display numbers, graphical representation or other indicia of the pressures being detected in the vacuum device. Furthermore, therecording device 780 provides awarning device 786 which could produce a light, sound, or a vocalized recording of a warning to those assisting with the fetal extraction. -
FIG. 8 illustrates a pumpattachable device 800 configured to attach to ahand pump 855, such as a KIWI hand pump. The pumpattachable device 800 includes anadapter 810, such as threading, gaskets, or other attachments capable of forming a fluid-tight seal, a pressure-recording device 820, such as a transducer, and acable 830 for communicating a detected pressure to a recording device via aplug 835. Thehand pump 855 includes ahandle 857, which maintains avacuum cavity 865 therein. Thevacuum cavity 865 is fluidly connected to ahose 870 and asuction device 872. Thehandle 857 also includes apressure gauge receiver 860. In an unmodified hand pump, the pressure gauge receive 860 accepts a mechanical pressure gauge that mechanically indicate a detected pressure in thevacuum cavity 865. In the vacuum device according to the present embodiment of the invention, the pumpattachable device 800 is secured into thehandle 857 of thehand pump 855 via thepressure gauge 860. - Thus, though the invention has been described with respect to a specific preferred embodiment, many variations and modifications will become apparent to those skilled in the art upon reading the present application. It is therefore the intention that the appended claims be interpreted as broadly as possible in view of the prior art to include all such variations and modifications.
Claims (13)
1. A device for recording a pressure produced by a vacuum extraction device, the vacuum extraction device enabled to couple to a fetus via a suction device, comprising:
a cable that is attachable to a monitor, the monitor capable of recording a detected pressure;
a pressure detection device coupled to the cable, the pressure detection device couples to a cavity of a vacuum extraction device for use with fetal extraction such that the pressure detection device may detect a pressure in the cavity;
the pressure detection device further adapted to communicate a detected vacuum pressure to the monitor via the cable;
the vacuum extraction device being adapted to produce a vacuum therein via hand-actuation; and
the vacuum extraction device comprising a suction device being vacuum attachable to a scalp portion of a fetus.
2. The device of claim 1 wherein the tubing has a first end and a second end.
3. The device of claim 2 wherein the first end and the second end are enabled to couple to tubing.
4. The device of claim 2 wherein the first end is enabled to attach to a vacuum pump.
5. The device of claim 2 wherein the first end is enabled to attach to a suction device.
6. A vacuum extraction pump-attachable device that monitors a vacuum pressure in a vacuum extraction device, comprising:
an adaptor enabled to attach to a pressure gauge receiver of a hand actuated vacuum extraction device, the vacuum extraction device comprising a suction device adapted to couple to a scalp portion of a fetus;
a vacuum pressure detector secured in the adapter such that the vacuum pressure detector is exposed to an air cavity in the vacuum extraction device; and
a cable coupled to the vacuum pressure detector, the cable enabled to attach to a monitor for recording a detected vacuum pressure.
7. The pump-attachable device of claim 6 wherein the air pressure detector is a transducer.
8. The pump-attachable device of claim 6 wherein the monitor is coupled to the cable.
9. The pump-attachable device of claim 8 wherein the monitor is enabled to display a detected pressure.
10. The pump-attachable device of claim 6 wherein the air pressure detector generates a mechanical signal based on the pressure.
11. The pump-attachable device of claim 6 wherein the air pressure detector generates an electrical signal based on the pressure.
12. The pump-attachable device of claim 8 wherein the monitor is enabled to generate a paper record.
13. The pump-attachable device of claim 6 further comprising a pressure release valve coupled to the hand pump.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/988,675 US20050101969A1 (en) | 2000-11-30 | 2004-11-15 | Vacuum extraction monitoring |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/727,124 US6872212B2 (en) | 2000-11-30 | 2000-11-30 | Vacuum extraction monitor with attachment for hand pump |
US10/988,675 US20050101969A1 (en) | 2000-11-30 | 2004-11-15 | Vacuum extraction monitoring |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/727,124 Division US6872212B2 (en) | 2000-11-30 | 2000-11-30 | Vacuum extraction monitor with attachment for hand pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050101969A1 true US20050101969A1 (en) | 2005-05-12 |
Family
ID=24921427
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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US09/727,124 Expired - Fee Related US6872212B2 (en) | 2000-11-30 | 2000-11-30 | Vacuum extraction monitor with attachment for hand pump |
US10/618,891 Abandoned US20040010266A1 (en) | 2000-11-30 | 2003-07-14 | Vacuum extraction monitoring with existing fetal heart rate monitors |
US10/988,675 Abandoned US20050101969A1 (en) | 2000-11-30 | 2004-11-15 | Vacuum extraction monitoring |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
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US09/727,124 Expired - Fee Related US6872212B2 (en) | 2000-11-30 | 2000-11-30 | Vacuum extraction monitor with attachment for hand pump |
US10/618,891 Abandoned US20040010266A1 (en) | 2000-11-30 | 2003-07-14 | Vacuum extraction monitoring with existing fetal heart rate monitors |
Country Status (10)
Country | Link |
---|---|
US (3) | US6872212B2 (en) |
EP (1) | EP1339333A2 (en) |
JP (1) | JP2004514532A (en) |
KR (1) | KR100688053B1 (en) |
AU (1) | AU2002243242A1 (en) |
BR (1) | BR0108114A (en) |
CA (1) | CA2426709A1 (en) |
IL (2) | IL150983A0 (en) |
MX (1) | MXPA02007392A (en) |
WO (1) | WO2002045604A2 (en) |
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US20130289577A1 (en) * | 2011-12-23 | 2013-10-31 | Leah BERHANE | Scapuloblade Shoulder Dystocia Device |
CN105286964A (en) * | 2015-11-02 | 2016-02-03 | 南京世帝医疗科技股份有限公司 | Color Doppler ultrasound abortion equipment with negative pressure display and control functions and control device and method |
CN109717937A (en) * | 2019-01-14 | 2019-05-07 | 上海理工大学 | A kind of obstetrics' electric suction apparatus |
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US6872212B2 (en) * | 2000-11-30 | 2005-03-29 | Victor L. Vines | Vacuum extraction monitor with attachment for hand pump |
CN1318093C (en) * | 2001-09-28 | 2007-05-30 | 参天制药株式会社 | Injections for eye tissue containing drug bound to polyethylene glycol |
US7163544B1 (en) * | 2003-06-06 | 2007-01-16 | Nicola Perone | Axis-traction handle with a pull-sensing grip for the obstetrical forceps |
US20050015098A1 (en) * | 2003-07-14 | 2005-01-20 | Vines Victor L. | Vacuum extraction business method |
DE102004048866A1 (en) * | 2004-10-07 | 2006-04-13 | Leybold Vacuum Gmbh | Fast-rotating vacuum pump |
EP2010074A4 (en) | 2006-04-26 | 2012-08-29 | Illuminoss Medical Inc | Apparatus and methods for reinforcing bone |
CN105411718B (en) * | 2015-12-09 | 2017-07-14 | 中国农业科学院农业信息研究所 | A kind of porkling automatic nursing system |
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CN105286964A (en) * | 2015-11-02 | 2016-02-03 | 南京世帝医疗科技股份有限公司 | Color Doppler ultrasound abortion equipment with negative pressure display and control functions and control device and method |
CN109717937A (en) * | 2019-01-14 | 2019-05-07 | 上海理工大学 | A kind of obstetrics' electric suction apparatus |
Also Published As
Publication number | Publication date |
---|---|
EP1339333A2 (en) | 2003-09-03 |
US6872212B2 (en) | 2005-03-29 |
BR0108114A (en) | 2004-06-15 |
US20020065520A1 (en) | 2002-05-30 |
CA2426709A1 (en) | 2002-06-13 |
US20040010266A1 (en) | 2004-01-15 |
IL150983A0 (en) | 2003-02-12 |
KR20020081284A (en) | 2002-10-26 |
WO2002045604A3 (en) | 2002-10-10 |
WO2002045604A2 (en) | 2002-06-13 |
JP2004514532A (en) | 2004-05-20 |
AU2002243242A1 (en) | 2002-06-18 |
MXPA02007392A (en) | 2005-02-25 |
KR100688053B1 (en) | 2007-02-28 |
IL150983A (en) | 2008-04-13 |
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