Portable Suction System

Abstract

The portable suction system includes a pump device and a removable bag device. The pump device includes a housing defining a recess, a motor assembly positioned within the housing, a first rod extending at least partially from the housing into the recess, and a second rod extending at least partially from the housing into the recess. The first rod and the second rod are driven in response to energization of the motor assembly. The bag device is positioned at least partially within the recess and includes a bag, a vacuum connector, a first piston coupled to the first rod, and a second piston coupled to the second rod.

Description

[Background technology]

[0001] (Related Applications) This application claims priority to and benefit of U.S. Provisional Patent Application No. 63 / 417,406, filed October 19, 2022, which is incorporated by reference in its entirety for all purposes.

[0002] (background) Many military and civilian patients require treatment provided by medical systems in the field, but are unable to receive such treatment because such systems remain deployed solely within medical treatment facilities due to size, power requirements, climate constraints, and other factors. For example, the standard of care for patients requiring such treatment in medical or trauma facilities is 0-550 mmHg suction from a wall-mounted or battery-powered unit, which may use a variety of suction attachments (e.g., suction hoses of variable lengths, catheters, including a variety of soft and hard catheters), each with a different purpose.

[0003] Currently, many first responders and military medical personnel use low-suction manual devices as first aid measures (e.g., bulb suction, syringe suction, airway positioning maneuvers, etc.) in the event of an injury to improvise suction treatment until the patient can reach either an equipped transport vehicle or emergency treatment facility. Conventional suction devices are large, require significant power, have a limited duration of effectiveness, and are problematic in adverse conditions. Thus, conventional suction solutions compromise the patient's ability to survive. Summary of the Invention [Means for solving the problem]

[0004] (summary) This summary is provided to introduce a selection of concepts that are further described below in the detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in limiting the scope of the claimed subject matter.

[0005] One aspect of the present disclosure provides a device including a motor assembly and a barrel drive rotatably driven by the motor assembly about a barrel axis. A cam is formed within the barrel drive. The device further includes a first follower positioned within the cam, a second follower positioned within the cam, a first rod coupled to the first follower, a second rod coupled to the second follower, a pressure regulator including a cavity, a valve in fluid communication with the cavity, and a pressure sensor in fluid communication with the cavity.

[0006] In some embodiments, operation of the motor assembly is adjusted in response to detecting pressure within the cavity using a pressure sensor.

[0007] In some embodiments, operation of the valve is adjusted in response to detecting pressure within the cavity using a pressure sensor.

[0008] In some embodiments, the device further includes a processor electrically coupled to the motor assembly, the pressure sensor, and the valve.

[0009] In some embodiments, the motor assembly includes an electric motor, a gear set, a transmission, a first position sensor, and a second position sensor.

[0010] In some embodiments, the barrel drive includes an outer cylindrical surface and the cam is formed within the outer cylindrical surface of the barrel drive.

[0011] In some embodiments, the cam extends 360 degrees around the outer cylindrical surface.

[0012] In some embodiments, the first rod defines a first rod axis and the second rod defines a second rod axis, the first rod axis being parallel to the second rod axis.

[0013] In some embodiments, the first rod axis is parallel to the barrel axis.

[0014] In some embodiments, the device further includes a first seal and a second seal, the first rod extending through the first seal and being movable relative to the first seal, and the second rod extending through the second seal and being movable relative to the second seal.

[0015] In some embodiments, the first rod includes a flange formed on an end of the first rod, and the first rod includes a groove that at least partially defines the flange.

[0016] In some embodiments, the regulator includes an air inlet, a first port, and a second port, the first port in fluid communication with the cavity and the second port in fluid communication with the pressure sensor.

[0017] In some embodiments, the regulator includes a passageway that contains the metering insert.

[0018] In some embodiments, the passage extends between the air inlet and the pressure sensor.

[0019] In some embodiments, the device further includes a housing that at least partially defines a recess, and a sensor configured to detect the presence of the attachment is positioned within the recess.

[0020] In some embodiments, the device further includes a status display and a user interface, and the pressure in the cavity is adjustable in response to receiving user input at the user interface.

[0021] In some embodiments, the device is placed in a standby configuration in response to de-energizing the device, the standby configuration including the first rod and the second rod at the same position along the barrel axis.

[0022] In some embodiments, the device includes a battery assembly, wherein the battery assembly is removable.

[0023] In some embodiments, the device includes a latch with a plurality of teeth and a spring that biases the latch to a closed position, the housing includes a cover with a plurality of teeth that engage with the plurality of teeth on the latch, the cover being movable in response to the latch being moved to an open position against the spring bias.

[0024] One aspect of the present disclosure provides a device comprising: a bag; a vacuum connector; a first stem coupled to the vacuum connector, the first stem including a first cylindrical portion and a first cavity; a second stem coupled to the vacuum connector, the second stem including a second cylindrical portion and a second cavity; a first piston positioned within the first cylindrical portion and movable relative to the first cylindrical portion; a second piston positioned within the second cylindrical portion and movable relative to the second cylindrical portion; a first bag port extending between the first cavity and the bag; and a second bag port extending between the second cavity and the bag.

[0025] In some embodiments, the bag is flexible.

[0026] In some embodiments, the first cavity is defined at least in part by a first piston and the second cavity is defined at least in part by a second piston.

[0027] In some embodiments, the device further includes a first one-way valve positioned between the first stem and the vacuum connector and a second one-way valve positioned between the second stem and the vacuum connector.

[0028] In some embodiments, the first bag port extends along a first port axis, the first barrel extends along a first barrel axis, and the first port axis is perpendicular to the first barrel axis.

[0029] In some embodiments, the second bag port extends along a second port axis, the second barrel extends along a second barrel axis, and the second port axis is perpendicular to the second barrel axis.

[0030] In some embodiments, the second barrel axis is parallel to the first barrel axis.

[0031] In some embodiments, the first piston includes a first notch and the second piston includes a second notch.

[0032] In some embodiments, the device includes a cap assembly coupled to the bag, the cap assembly being movable between a venting position, a closed position, and a removed position.

[0033] In some embodiments, the device includes a cover and an actuator extending from the cover, the actuator deflecting in response to activation by a user.

[0034] In some embodiments, the device includes a regulator stem assembly coupled to the vacuum connector, the regulator stem assembly including a first opening, a second opening, a first one-way valve, and a second one-way valve.

[0035] One aspect of the present disclosure provides a system including a first device and a second device. The first device includes a housing defining a recess, a motor assembly positioned within the housing, a first rod extending at least partially from the housing into the recess, and a second rod extending at least partially from the housing into the recess. The first rod and the second rod are driven in response to energization of the motor assembly. The second device is positioned at least partially within the recess. The second device includes a bag, a vacuum connector, a first piston coupled to the first rod, and a second piston coupled to the second rod. The second device is removable from the first device.

[0036] In some embodiments, the second device includes a cover and an actuator extending from the cover, the second device being released from the first device in response to actuation of the actuator.

[0037] In some embodiments, the first device includes a pressure regulator including a cavity, a valve in fluid communication with the cavity, and a pressure sensor in fluid communication with the cavity.

[0038] In some embodiments, the second device includes a regulator stem assembly in fluid communication with the pressure regulator.

[0039] In some embodiments, the first rod is driven out of phase with the second rod.

[0040] Other aspects of the present disclosure will become apparent by consideration of the detailed description and accompanying drawings. [Brief explanation of the drawings]

[0041] The accompanying figures and examples are offered by way of illustration, not by way of limitation. The foregoing aspects and other features of the present disclosure are set forth in the following description, taken in conjunction with the accompanying illustrative figures (also "FIGS"), which relate to one or more embodiments.

[0042] [Figure 1] FIG. 1 is a perspective view of a portable suction system including a pump device and a bag device.

[0043] [Figure 2] 2 is a perspective view of the portable suction system of FIG. 1 shown with the bag device removed from the pump device.

[0044] [Figure 3] 3 is a partial perspective view of the pump device of FIG. 1. FIG.

[0045] [Figure 4] FIG. 4 is a partial perspective view of the bag device of FIG.

[0046] [Figure 5] 5 is a perspective view of the pump device of FIG. 1 shown with the housing removed.

[0047] [Figure 6] 6 is a perspective cross-sectional view of the pump device of FIG. 1. FIG.

[0048] [Figure 7] 7 is a perspective cross-sectional view of the pump device of FIG. 1. FIG.

[0049] [Figure 8] FIG. 8 is a perspective view of the barrel drive, the first rod, and the second rod.

[0050] [Figure 9] FIG. 9 is a perspective view of the pressure regulator and circuit board assembly.

[0051] [Figure 10] 10 is a perspective cross-sectional view of the pressure regulator and circuit board assembly of FIG. 9. FIG.

[0052] [Figure 11]11 is a partial perspective cross-sectional view of the pressure regulator of FIG.

[0053] [Figure 12] 12 is a partial perspective cross-sectional view of the pressure regulator and circuit board assembly of FIG. 9. FIG.

[0054] [Figure 13] 13 is a partial perspective cross-sectional view of the bag device of FIG. 1. FIG.

[0055] [Figure 14] FIG. 14 is a cross-sectional view of the bag device and regulator.

[0056] [Figure 15] 15 is a cross-sectional view of a cap assembly on the bag device of FIG. 1. FIG.

[0057] [Figure 16] 16 is a partial perspective cross-sectional view of a bag device coupled to the pump device of FIG. 1. FIG.

[0058] [Figure 17] 17 is another partial perspective cross-sectional view of a bag device coupled to the pump device of FIG. 1. FIG.

[0059] [Figure 18] 18 is another partial perspective cross-sectional view of a bag device coupled to the pump device of FIG. 1. FIG.

[0060] [Figure 19] 19 is another partial perspective cross-sectional view of a bag device coupled to the pump device of FIG. 1. FIG.

[0061] [Figure 20] FIG. 20 is a perspective view of the latch in a closed position with the teeth interfacing with teeth formed on the cover.

[0062] [Figure 21] FIG. 21 is a perspective view of the cover and latch in the open position.

[0063] [Figure 22] FIG. 22 is a pneumatic schematic of the airflow in the system of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0064] Before any embodiment is described in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways.

[0065] (Detailed explanation) Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In case of conflict, the present specification, including definitions, will control. Preferred methods and materials are described below, although methods and materials similar or comparable to those described herein can also be used in the practice or testing of the present disclosure. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety. The materials, methods, and examples disclosed herein are illustrative only and are not intended to be limiting.

[0066] For the purposes of promoting an understanding of the principles of the present disclosure, reference will now be made to preferred embodiments and specific language will be used to describe the same. Nonetheless, it is to be understood that no limitation of the scope of the disclosure is thereby intended, and that such variations and further modifications of the disclosure as exemplified herein are contemplated as would ordinarily occur to one skilled in the art to which the present disclosure pertains.

[0067] The articles "a" and "an" are used herein to refer to one or to more than one (i.e., to at least one) of the grammatical object of the article. By way of example, "an element" means "at least one element" and can include "more than one element."

[0068] "About" and "approximately" are used to provide flexibility in the endpoints of a numerical range by assuming that a given value can be "slightly above" or "slightly below" the endpoint without affecting the desired result.

[0069] Use of the terms "including," "comprising," or "having," and variations thereof, herein means to encompass the subsequently listed elements, equivalents thereof, and additional elements. As used herein, "and / or" refers to and encompasses any and all possible combinations of one or more of the associated listed items, as well as the lack of combinations when interpreted in the alternative ("or").

[0070] The present disclosure also contemplates that in some embodiments, any feature or combination of features described herein may be excluded or omitted. For illustrative purposes, if the specification describes an apparatus as comprising components A, B, and C, it is specifically intended that any of A, B, or C, or combinations thereof, singly or in any combination, may be omitted and negated.

[0071] The recitation of ranges of values ​​herein, unless otherwise indicated herein, is intended to serve as a shorthand method of individually referring to each separate value within the range, and each separate value is incorporated herein to the same extent as if it were individually recited herein. For example, if a concentration range is recited as 1% to 50%, values ​​of 2% to 40%, 10% to 30%, or 1% to 3%, etc., are intended to be expressly recited herein. These are merely examples of what is specifically intended, and all possible combinations of numerical values ​​between and including the lowest and highest recited values ​​shall be considered to be expressly recited in this disclosure.

[0072] As used herein, the terms “processor,” “central processing unit,” or “CPU” are used interchangeably and refer to a device capable of reading a program from a computer memory (e.g., a ROM or other computer memory) and performing a set of steps in accordance with the program. As used herein, the term “processor” (e.g., a microprocessor, microcontroller, processing unit, or other suitable programmable device) may include, among other things, a control unit, an arithmetic logic unit (“ALC”), and multiple registers, and may be implemented using known computer architectures (e.g., modified Harvard architecture, von Neumann architecture, etc.). In some embodiments, a processor may be configured to communicate in standalone and / or distributed environments, and may be configured to communicate with other processors via wired or wireless communication; such one or more processors may be configured to operate on one or more processor-controlled devices, which may be similar or different devices.

[0073] As used herein, the term "memory" refers to any memory storage, non-transitory computer-readable medium. Memory may include, for example, a program storage area and a data storage area. The program and data storage areas may include a combination of different types of memory, such as ROM, RAM (e.g., DRAM, SDRAM, etc.), EEPROM, flash memory, a hard disk, an SD card, or other suitable magnetic, optical, physical, or electronic memory devices. A processor is connected to the memory and can execute software instructions, which may be stored in the RAM of the memory (e.g., during execution), the ROM of the memory (e.g., substantially permanently), or another non-transitory computer-readable medium, such as another memory or a disk. In some embodiments, memory includes one or more processor-readable and accessible memory elements and / or components that are internal to the processor-controlled device, may be external to the processor-controlled device, and may be accessed via a wired or wireless network. Software included in the implementation of the methods disclosed herein may be stored in the memory. Software includes, for example, firmware, one or more applications, program data, filters, rules, one or more program modules, and other executable instructions. For example, a processor can be configured to read from memory and execute instructions related to, among other things, the processes and methods described herein.

[0074] As used herein, the term "computer-readable medium" refers to any device or system for storing and providing information (e.g., data and instructions) to a computer processor. Examples of computer-readable media include, but are not limited to, DVDs, CDs, hard disk drives, magnetic tapes, and servers for streaming media over a network, whether local or remote (e.g., cloud-based).

[0075] The term "coupled," as used herein, is defined as "connected," although not necessarily directly, and not necessarily mechanically. The term "coupled" shall be understood to mean physically, magnetically, chemically, fluidly, electrically, or otherwise coupled, connected, or joined, and does not exclude the existence of intermediate elements between coupled elements, absent specific language to the contrary.

[0076] As used herein, the term "in electronic communication" refers to electrical devices (e.g., computers, processors, etc.) that are configured to communicate with each other through direct or indirect signal transmission. Similarly, a computer that is configured to transmit information to another computer or device (e.g., through cables, wires, infrared signals, telephone lines, airwaves, etc.) also communicates electronically with other computers or devices.

[0077] As used herein, the terms "vacuum" or "suction" refer to a gas pressure below atmospheric pressure.

[0078] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0079] 1, portable suction system 10 includes a pump device 14 and a bag device 18. The portable suction system 10 described herein provides a safe and effective solution for use in the field (e.g., during transport to a transport vehicle, in a vehicle to a medical facility, or in situations where moving a patient for an extended period of time is impractical or impossible).

[0080] 2 , bag device 18 is removable from pump device 14. In some embodiments, bag device 18 is single-use and disposable. Pump device 14 includes a housing 22 defining a recess 26. In the illustrated embodiment, bag device 18 is positioned at least partially within recess 26 when bag device 18 is coupled to pump device 14. In the illustrated embodiment, pump device 14 includes a sensor 30 positioned within recess 26, sensor 30 configured to detect the presence of bag device 18 when bag device 18 is positioned within recess 26.

[0081] 5, 6, and 7, pump device 14 includes a motor assembly 34 coupled to a barrel drive 38. In the illustrated embodiment, motor assembly 34 and barrel drive 38 are positioned within housing 22. In the illustrated embodiment, barrel drive 38 is rotatably driven by motor assembly 34 about barrel axis 42. Motor assembly 34 includes an electric motor 46, a gear set 50, and a transmission 54. In some embodiments, electric motor 46 is a DC motor, a brushless DC motor, a reluctance motor, an induction motor, a permanent magnet motor, or other suitable motor. In some embodiments, gear set 50 is a planetary gear set. In some embodiments, transmission 54 is a belt transmission.

[0082] 6, the motor assembly 34 includes a first position sensor 58 (e.g., a giant magnetoresistance "GMR" sensor). The first position sensor 58 detects the magnetic field resulting from the position of the magnet 62. In some embodiments, the motor assembly 34 also includes a second position sensor 66 (e.g., a Hall-effect sensor). The second position sensor 66 may advantageously provide increased position resolution detection of the position of the electric motor 46. In the illustrated embodiment, the absolute position of the electric motor 46 and, correspondingly, the rods 90, 94 are detectable using the first position sensor 58 and the second position sensor 66.

[0083] 6, the pump device 14 includes a battery assembly 70. In some embodiments, the battery assembly 70 is removable and replaceable with another battery assembly. In some embodiments, the battery assembly 70 includes a CR123 battery. In some embodiments, the battery assembly 70 includes a lithium ion battery.

[0084] 20 and 21, the pump device 14 includes a latch 23 for securing a movable cover 24. In the illustrated embodiment, the cover 24 is releasable to gain access to the battery assembly 70. The latch 23 includes a plurality of teeth 23A, and a spring 25 biases the latch 23 to a closed position (FIG. 20). The cover 24 includes a plurality of teeth 24A that correspond to and overlap the plurality of teeth 23A on the latch 23A in the closed position. The cover 24 is movable to an open position (FIG. 21) in response to the latch 23 being moved against the bias of the spring 25, which separates the teeth 23A from the teeth 24A. The teeth 23A, 24A increase the capture area at full contact without increasing the latch size or required movement. In the illustrated embodiment, the latch 23 moves to the open position by moving the distance of one tooth.

[0085] 7 and 8 , a cam 74 is formed within the barrel drive 38. In the illustrated embodiment, the barrel drive 38 includes an outer cylindrical surface 78, and the cam 74 is formed within the outer cylindrical surface 78 of the barrel drive 38. In the illustrated embodiment, the cam 74 extends 360 degrees around the outer cylindrical surface 78. A first follower 82 is positioned within the cam 74, and a second follower 86 is positioned within the cam 74. In other words, more than one follower 82, 86 is positioned within the cam 74. The followers 82, 86 slide within the cam 74 as the barrel drive 38 rotates about the barrel axis 42.

[0086] 7 , the pump device 14 includes a first rod 90 coupled to the first follower 82 and a second rod 94 coupled to the second follower 86. In the illustrated embodiment, the pump device 14 includes two rods 90, 94 that are driven in response to energizing the motor assembly 34. In other embodiments, the pump device 14 includes any number of rods driven by the motor assembly. The first rod 90 extends at least partially from the housing 22 into the recess 26, and the second rod 94 extends at least partially from the housing 22 into the recess 26 ( FIG. 3 ). In the illustrated embodiment, the rods 90, 94 are driven in an alternating manner, e.g., the first rod 90 extends from the housing 22 while the second rod 94 is retracted into the housing 22. In other words, the first rod 90 is driven out of phase with the second rod 94.

[0087] The first rod 90 includes a flange 98 formed on an end 102 of the first rod 90. In the illustrated embodiment, the first rod 90 includes a groove 106 that at least partially defines the flange 98. Similarly, the second rod 94 includes a flange 110 and a groove 118 formed on an end 114 of the second rod 94. As described in further detail herein, the ends 102, 114 of the rods 90, 94 are removably coupled to the bag portion 18. The first rod 90 defines a first rod axis 122, and the second rod 94 defines a second rod axis 126. In the illustrated embodiment, the first rod axis 122 is parallel to the second rod axis 126. In the illustrated embodiment, the first rod axis 122 and the second rod axis 126 are parallel to the barrel axis 42.

[0088] 7, pump device 14 further includes a first seal 130 and a second seal 134. First rod 90 extends through and is movable relative to first seal 130. Second rod 94 extends through and is movable relative to second seal 134. Thus, pump device 14 remains sealed from the external environment in which system 10 is used.

[0089] 9 , the pump device 14 further includes a pressure regulator 138, a first valve 142, a second valve 146, and a circuit board assembly 150. The pressure regulator 138 defines a cavity 154. The pressure regulator 138 includes an air inlet 158, a first port 162, and a second port 166. In the illustrated embodiment, the first port 162 is in fluid communication with the cavity 154 by a passage 170. In the illustrated embodiment, the second port 166 is in fluid communication with a sensing chamber 174 by a passage 172. In some embodiments, the pressure regulator 138 includes one or more metering inserts 178 positioned with the passages to restrict the flow of air, thereby generating a metered air flow. The metered air pressure bleed system advantageously allows for regulation and pressure measurement of the suction side of the pump. The regulator 138 allows for pressure recovery in measurements after the pump experiences a low pressure event (eg, high suction pressure).

[0090] Referring to FIG. 12 , valves 142, 146 control the flow of ambient air into cavity 154. In some embodiments, valves 142, 146a are electronically controlled by circuit board assembly 150 to regulate pressure within cavity 154. In the illustrated embodiment, first valve 142 and second valve 146 are “bullet valves” and are electronically controlled to move between open and closed positions. In the illustrated embodiment, two pneumatic valves 142, 146 are positioned in series with each other. A passage 182 from air inlet 158, including a metering insert 178, connects between the two pneumatic valves 142, 146, providing pressure control with high accuracy over a wide range of pressure and flow conditions. In some embodiments, first valve 142 is controlled for large-scale pressure regulation and second valve 146 is controlled for small-scale pressure regulation. In some embodiments, only one valve is utilized. In some embodiments, any number of valves are utilized to regulate the pressure within the cavity.

[0091] 9 , circuit board assembly 150 includes a pressure sensor 186 mounted on circuit board 190. Pressure sensor 186 is in fluid communication with cavity 154 within pressure regulator 138. Specifically, in the illustrated embodiment, pressure sensor 186 is fluidly coupled to sensing chamber 174. In the illustrated embodiment, a flexible conduit 192 fluidly connects pressure sensor 186 to pressure regulator 138. In some embodiments, cavity 154 and sensing chamber 174 advantageously attenuate noise generated by reciprocating rods 90, 94, improving measurement of pressure by pressure sensor 186. In the illustrated embodiment, regulator 138 includes a passageway 194 from air inlet 158 ​​to sensing chamber 174, and includes a metering insert 178 positioned therein.

[0092] In some embodiments, the circuit board assembly 150 includes a processor 198 electrically coupled to the motor assembly 34, the pressure sensor 186, the valves 142, 146, or any combination thereof. In some embodiments, the operation of the motor assembly 34 is adjusted in response to detecting pressure using the pressure sensor 186. In other words, the speed or power output of the electric motor 46 is adjusted in response to pressure feedback detected by the pressure sensor 186. In some embodiments, the operation of one or more valves 142, 146 is adjusted in response to detecting pressure using the pressure sensor 186. In other words, the valves 142, 146 are adjusted in response to pressure feedback detected by the pressure sensor 186. In some embodiments, both the operation of the motor assembly 34 and the operation of the valves 142, 146 are adjusted in response to detecting pressure using the pressure sensor 186. Thus, the pump device 14 achieves precise suction pressure control by adjusting the speed of the electric motor 46 and controlling the valves 142, 146 based on pressure feedback from the pressure sensor 186.

[0093] In some embodiments, the pump device 14 is placed in a standby configuration in response to de-energizing (e.g., turning off) the pump device 14. Referring to FIG. 3 , the standby configuration includes the first rod 90 and the second rod 94 at the same position along the barrel axis 42. In other words, the rods 90, 94 are aligned with one another. Advantageously, the standby configuration facilitates removal and installation of the bag device 18. The use of precision stops to achieve the standby configuration aligns the rods 90, 94 and advantageously allows the bag device 18 to be quickly removed and / or replaced without adjustment or misalignment. As described in detail herein, absolute position feedback from the first sensor 58 provides feedback for achieving the standby configuration.

[0094] Continuing with reference to FIG. 1 , pump device 14 includes a status display 202 and a user interface 206. In some embodiments, the pressure within cavity 154 is adjustable in response to receiving user input at user interface 206. In other words, the pressure generated by system 10 may be user-selected. System 10 is quiet to allow for communication in noisy environments and has minimal illumination for low-light or no-light applications. The electronic interface and indicator lights are designed to reflect no-light SOP implementation for small units. In some embodiments, system 10 can be controlled by commands typed into pump device 14. In some embodiments, control commands from a user may originate from an external device, such as a cell phone, and be communicated via wireless communication (e.g., Bluetooth®).

[0095] 4 and 13, bag device 18 includes bag 220 (e.g., a reservoir). In the illustrated embodiment, bag 220 is flexible and not a rigid pressure chamber. In some embodiments, bag 220 is made of a polymer. In some embodiments, bag 220 has a collection volume of approximately 500 mL. Bag device 18 includes a vacuum connector 224 with a connection port 228. Connection port 228 is configured to interface with accessories that may be utilized for different medical procedures. As detailed herein, bag device 18 collects biohazardous waste on-site and can be easily removed and replaced from pump device 14.

[0096] 13 and 14 , the bag device 14 includes a first stem 232 coupled to the vacuum connector 224 and a second stem 236 coupled to the vacuum connector 224. In the illustrated embodiment, the first stem 232 includes a first cylindrical portion 240 and at least partially defines a first cavity 244. Similarly, the second stem 236 includes a second cylindrical portion 248 and at least partially defines a second cavity 252. The first cylindrical portion 240 extends along a first cylindrical portion axis 256, and the second cylindrical portion 248 extends along a second cylindrical portion axis 260. In the illustrated embodiment, the second cylindrical portion axis 260 is parallel to the first cylindrical portion axis 256.

[0097] A first piston 264 is positioned within and movable relative to the first cylindrical portion 240. Similarly, a second piston 268 is positioned within and movable relative to the second cylindrical portion 248. As described in further detail herein, the pistons 264, 268 are driven to reciprocate within their respective cylindrical portions 240, 248 by the rods 90, 94 of the pump device 14. In the illustrated embodiment, the first piston 264 includes a first notch 272 configured to receive the first flange 98 of the first rod 90, and the second piston 268 includes a second notch 276 configured to receive the second flange 110 of the second rod 94. In the illustrated embodiment, the first cavity 244 is defined at least in part by the first piston 264, and the second cavity 252 is defined at least in part by the second piston 268. Thus, the cavities 244, 252 have variable volumes as the pistons 264, 268 reciprocate within the barrels 240, 248.

[0098] 13 and 14, the bag device 18 includes multiple one-way valves 280. In the illustrated embodiment, a first one-way valve 280 is positioned between the first stem 232 and the vacuum connector 224, and a second one-way valve 280 is positioned between the second stem 236 and the vacuum connector 224.

[0099] A first bag port 284 (FIG. 14) extends between the first cavity 244 and the bag 220, and a second bag port 288 extends between the second cavity 252 and the bag 220. The first bag port 284 extends along a first port axis 292, which is perpendicular to the first barrel axis 256. Similarly, the second bag port 288 extends along a second port axis 296, which is perpendicular to the second barrel axis 260.

[0100] As described in further detail herein, fluid is drawn into the vacuum connector 224 and first cavity 244 when the first piston 264 moves away from the vacuum connector 224 (e.g., when the first piston 264 is retracted). The fluid in the first cavity 244 is then pushed into the bag 220 through the first bag port 284 when the first piston 264 moves toward the vacuum connector 224 (e.g., when the first piston 264 is extended). When the first piston 264 moves toward the vacuum connector 224, a first one-way valve 280, positioned between the first stem 232 and the vacuum connector 224, prevents the fluid in the first cavity 244 from re-entering the vacuum connector 224. Similarly, fluid is drawn into the second cavity 252 as the second piston 268 moves away from the vacuum connector 224 and expelled into the bag 220 through the second bag port 288 as the second piston 268 moves toward the vacuum connector 224. In some embodiments, the first piston 264 and the second piston 268 are driven out of phase with each other (e.g., alternating) so that one piston draws in fluid while the other piston expels fluid into the bag. In the illustrated embodiment, the bag device 18 forms a fluid transfer pump. In some embodiments, the fluid being transferred is a biological fluid from the patient (e.g., vomit, blood, mucus, etc.). In some embodiments, the fluid is a liquid containing a semi-solid or solid.

[0101] In the illustrated embodiment, the bag device 18 further includes a regulator stem assembly 300 coupled to the vacuum connector 224. In the illustrated embodiment, the regulator stem assembly 300 includes a first opening 304 (corresponding to the first port 162 on the pump device 14) and a second opening 308 (corresponding to the second port 166 on the pump device 14). In some embodiments, the regulator stem assembly 300 includes a first one-way valve 312 at the interface with the vacuum connector 224 and a second one-way valve 316 positioned between the openings 304, 308. As described in detail herein, within the pressure regulator 138, the second opening 308 leads to the sensing chamber 174 and the first opening 304 leads to the cavity 154.

[0102] 15 , the bag device 18 includes a cap assembly 320 including a threaded portion 324 with at least one vent hole 326, a cap 328, and a ratchet 332. In the illustrated embodiment, the cap assembly 320 is movable between a vent position, a closed position, and a removed position. In the vent position, the vent hole 326 is exposed to the atmosphere. In the closed position, the vent hole 326 is removed and blocked by the cap 328. In the removed position, the cap 328 is separated from the threaded portion 324. In one embodiment, the cap assembly 320 is initially in the vent position. An outer surface 336 of the cap 328 includes a plurality of grooves 340 that interface with the ratchet 332. The ratchet 332 acts as a detent to secure the cap 328 in place when the cap 328 is not being rotated by the user.

[0103] 16 and 17, the bag device 18 is shown attached to the pump device 14. The end 102 of the first rod 90 is received within a notch 272 in the first piston 264, and the end 114 of the second rod 94 is received within a notch 276 in the second piston 268. The pump device 14 is shown in a standby configuration in FIGS. 16 and 17 so that the bag device 18 can be easily removed or attached as desired.

[0104] 18 and 19 , the bag device 18 further includes a cover 344 and an actuator 348. In the illustrated embodiment, at least a portion of the actuator 348 extends from the cover 344 (e.g., the user-actuated portion). When the actuator 348 is not depressed by the user, wings 352 on the actuator 348 interface with the pump device 14, securing the bag device 18 in place. When the actuator 348 is depressed, the actuator 348 deflects and the wings 352 are retracted away from the pump device 14, releasing the bag device 18 from the pump device 14. In the illustrated embodiment, the actuator 348 deflects in response to activation by the user.

[0105] Referring to FIG. 22, a pneumatic schematic for the system 10 is illustrated.

[0106] The system 10 disclosed herein solves the problems associated with using emergency devices for suction in the field, which leads to poor patient treatment. Defective treatment results from an insufficient amount of suction, incomplete suction as the device and system simply run out of adequate power, and excessive attention from emergency responders, resulting in other serious injuries being inappropriately treated. The system 10 disclosed herein provides long-term, adequately powered suction strength in a miniaturized system that is new to the industry. As detailed herein, the system 10 is portable. In some embodiments, the system 10 measures approximately 7.58 inches high, 3.25 inches wide, and 2.5 inches deep. In some embodiments, system 10 is utilized for airway suction in airway procedures, including cricothyrotomy and intubation, chest suction for management of penetrating chest trauma (e.g., using 20 mmHg continuous or intermittent suction), or on-path damage control surgical suction for open thoracotomy procedures by advanced resuscitation surgical teams.

[0107] In some embodiments, system 10 provides an adjustable suction pressure within a range of about 0 mmHg to about 550 mmHg. In some embodiments, system 10 provides an adjustable suction pressure within a range of about 0 mmHg to about 750 mmHg. In some embodiments, system 10 activates at about 80 mmHg for about two hours, which constitutes a procedure such as a transitional DCS application. In some embodiments, system 10 activates at about 20 mmHg (about 30 cmH2O), for example, a transitional chest injury management procedure.

[0108] Those skilled in the art will readily appreciate that the present disclosure is clearly adapted to carry out the objects and obtain the ends and advantages mentioned, as well as those inherent therein. The present disclosure described herein is an exemplary embodiment and is not intended as a limitation on the scope of the disclosure. Modifications therein and other uses will occur to those skilled in the art that are encompassed within the spirit of the disclosure as defined by the scope of the claims.

[0109] Any reference, including any non-patent or patent document cited herein, is not admitted to constitute prior art. It should be understood that, unless specifically stated otherwise, the reference to any document herein does not constitute an admission that any of these documents form part of the common general knowledge in the art in the United States or any other country. Any discussion of a reference describes what its author asserts, and the applicants reserve the right to challenge the accuracy and pertinence of any of the documents cited herein. All references cited herein are incorporated by reference in their entirety unless expressly stated otherwise. In the event of any discrepancy between any definitions and / or explanations found in the cited references, the present disclosure shall control.

[0110] Various features and advantages are set forth in the following claims.

Claims

1. A device, a motor assembly; a barrel drive rotatably driven by the motor assembly about a barrel axis, the cam being formed within the barrel drive; a first follower positioned within the cam; and a second follower positioned within the cam; and a first rod coupled to the first follower; a second rod coupled to the second follower; a pressure regulator including a cavity; a valve in fluid communication with the cavity; a pressure sensor in fluid communication with the cavity; A device comprising:

2. The device of claim 1 , wherein operation of the motor assembly is adjusted in response to detecting pressure within the cavity with the pressure sensor.

3. The device of claim 1 , wherein operation of the valve is regulated in response to detecting pressure within the cavity with the pressure sensor.

4. The device of claim 1 , further comprising a processor electrically coupled to the motor assembly, the pressure sensor, and the valve.

5. The device of claim 1 , wherein the motor assembly includes an electric motor, a gear set, a transmission, a first position sensor, and a second position sensor.

6. The device of claim 1 , wherein the barrel drive includes an outer cylindrical surface, and the cam is formed within the outer cylindrical surface of the barrel drive.

7. The device of claim 6 , wherein the cam extends 360 degrees around the outer cylindrical surface.

8. 10. The device of claim 1, wherein the first rod defines a first rod axis and the second rod defines a second rod axis, the first rod axis being parallel to the second rod axis.

9. The device of claim 8 , wherein the first rod axis is parallel to the barrel axis.

10. 10. The device of claim 1, further comprising a first seal and a second seal, wherein the first rod extends through the first seal and is movable relative to the first seal, and the second rod extends through the second seal and is movable relative to the second seal.

11. The device of claim 1 , wherein the first rod includes a flange formed at an end of the first rod, the first rod including a groove that at least partially defines the flange.

12. 10. The device of claim 1, wherein the regulator includes an air inlet, a first port, and a second port, the first port in fluid communication with the cavity and the second port in fluid communication with the pressure sensor.

13. The device of claim 12 , wherein the regulator includes a passageway that contains a metering insert.

14. The device of claim 13 , wherein the passage extends between the air inlet and the pressure sensor.

15. The device of claim 1 , further comprising a housing at least partially defining a recess, wherein a sensor configured to detect the presence of an attachment is positioned within the recess.

16. The device of claim 1 , further comprising a status display and a user interface, wherein the pressure within the cavity is adjustable in response to receiving user input at the user interface.

17. 10. The device of claim 1, wherein the device is placed in a standby configuration in response to de-energizing the device, the standby configuration including the first rod and the second rod at the same position along the barrel axis.

18. The device of claim 1 further comprising a battery assembly, said battery assembly being removable.

19. 10. The device of claim 1, further comprising a latch with a plurality of teeth and a spring biasing the latch to a closed position, the housing including a cover with a plurality of teeth that engage with the plurality of teeth on the latch, the cover being movable in response to the latch being moved to an open position against the spring bias.

20. A device, A bag and A vacuum connector; a first stem coupled to the vacuum connector, the first stem including a first cylindrical portion and a first cavity; a second stem coupled to the vacuum connector, the second stem including a second cylindrical portion and a second cavity; a first piston positioned within the first cylindrical portion and movable relative to the first cylindrical portion; a second piston positioned within the second cylindrical portion and movable relative to the second cylindrical portion; a first bag port extending between the first cavity and the bag; a second bag port extending between the second cavity and the bag; and A device comprising:

21. 21. The device of claim 20, wherein the bag is flexible.

22. 21. The device of claim 20, wherein the first cavity is defined at least in part by the first piston and the second cavity is defined at least in part by the second piston.

23. 21. The device of claim 20, further comprising a first one-way valve positioned between the first stem and the vacuum connector, and a second one-way valve positioned between the second stem and the vacuum connector.

24. 21. The device of claim 20, wherein the first bag port extends along a first port axis, the first barrel extends along a first barrel axis, and the first port axis is orthogonal to the first barrel axis.

25. 25. The device of claim 24, wherein the second bag port extends along a second port axis, the second barrel extends along a second barrel axis, and the second port axis is orthogonal to the second barrel axis.

26. 26. The device of claim 25, wherein the second barrel axis is parallel to the first barrel axis.

27. 21. The device of claim 20, wherein the first piston includes a first notch and the second piston includes a second notch.

28. 21. The device of claim 20, further comprising a cap assembly coupled to the bag, the cap assembly being movable between a venting position, a closed position, and a removed position.

29. 21. The device of claim 20, further comprising a cover and an actuator extending from the cover, the actuator deflecting in response to activation by a user.

30. 21. The device of claim 20, further comprising a regulator stem assembly coupled to the vacuum connector, the regulator stem assembly comprising a first opening, a second opening, a first one-way valve, and a second one-way valve.

31. 1. A system comprising: A first device, the first device comprising: a housing defining a recess; a motor assembly positioned within the housing; a first rod extending at least partially from the housing into the recess; a second rod extending at least partially from the housing into the recess; and Including, a first device, the first rod and the second rod being driven in response to energization of the motor assembly; a second device positioned at least partially within the recess; and Equipped with the second device includes a bag, a vacuum connector, a first piston coupled to the first rod, and a second piston coupled to the second rod; The system wherein the second device is removable from the first device.

32. 32. The system of claim 31, wherein the second device includes a cover and an actuator extending from the cover, the second device releasing from the first device in response to actuation of the actuator.

33. 32. The system of claim 31, wherein the first device comprises a pressure regulator including a cavity, a valve in fluid communication with the cavity, and a pressure sensor in fluid communication with the cavity.

34. 34. The system of claim 33, wherein the second device includes a regulator stem assembly in fluid communication with the pressure regulator.

35. 34. The system of claim 33, wherein the first rod is driven out of phase with the second rod.

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