CN102614074B

CN102614074B - Compression therapeutic apparatus

Info

Publication number: CN102614074B
Application number: CN201210098027.XA
Authority: CN
Inventors: 马修·J·佩里; 马克·A·维斯; 斯科特·武迪卡
Original assignee: Tyco Healthcare Group LP
Current assignee: Covidien LP
Priority date: 2004-02-23
Filing date: 2005-02-23
Publication date: 2015-09-23
Anticipated expiration: 2025-02-23
Also published as: AU2005216923A1; NO20064255L; CA2552355C; EP2319476A3; DK1720504T3; EP2314268B1; DE602005022165D1; CA2552353A1; EP1718894A1; ATE468834T1; PL1720504T3; CA2552354C; PL1720505T3; IL176409A; HK1091390A1; AU2005216924B2; EP1722738A1; EP1720504B1; ATE473390T1; WO2005082316A2

Abstract

A kind of compression therapeutic apparatus (10), it comprises the first air bag (46a, 46b, 46c, 48a, 48b, 48c) around limb support.Second air bag is also around described limb support.Described air bag is communicated with and described airbag inflation with fluid source (50) fluid, makes described first airbag inflation continue first time period, and described second airbag inflation continued for the second time period.Described second time period starts in described first time period.Single pressure sensor and described first air bag and described second air bag are connected.

Description

Compression therapeutic apparatus

This divisional application is 200580004326.0 based on application number, and the applying date is on 02 23rd, 2005, and denomination of invention is the divisional application of the Chinese patent application of " compression therapeutic apparatus ".

Technical field

The disclosure is usually directed to the vascular treatment field of the limbs being applied to health, relates more specifically to the compression therapeutic apparatus of the controller with regulated fluid stream.

Background technology

Main concern for fixing patient and similar people is the medical condition forming clot in blood, such as venous thrombosis (DVT) and PE.Such patient and people comprise patient and the people of those experience operations, anesthesia and long-term bed recuperation etc.These blood coagulation situations usually occur in the Deep venou of lower limb and/or pelvis.These veins, such as deoxidation blood is turned back to heart by iliac vein, femoral vein, popliteal vein and shin vein.Such as, when the blood circulation in these veins due to disease, damage or stop and be delayed time, the trend that blood has gathering or accumulates.It is desirable that static blood pond is formed for clot.The principal risk be associated with this situation interferes cardiovascular circulation.When the most serious, the fragment of clot can be shaken off and move.Lung embolus can form main pulmonary artery and block, and this may threat to life.

The situation be associated with patient's inertia and adjoint risk can by the limbs to patient, and the lower limb such as comprising thigh, shank and foot applies intermittent pressure and controlled to help blood circulation and alleviate.Known device for helping blood circulation, such as monolithic pad and compressing boots.For example, see United States Patent(USP) Nos. 6,290,662 and 6,494,852.

Such as, order compressorium is used, and it is formed by being connected to the disposable air pump holding pad by a series of air hose.The described part holding pad and be configured to around patient's lower limb, such as thigh, shank or foot are arranged.Multiple pad can be installed to lower limb to cover the various piece of lower limb.Then air is sequentially pressed into and one or morely holds in the different piece of pad, produces pressure, which thereby enhance venous return around thigh, shank or foot.

These known devices can suffer various defect due to their huge and heavy operating characteristic.These defects reduce comfortableness, compliance and adversely can hinder the activity of patient after surgery in rehabilitation course.

In addition, this known order compressorium typically comprises and regulates one or more controller assemblies holding air stream in pad and pressure.Described controller assemblies can be installed to bed and during use plug is inserted in the wall outlet for powering.Such as, but such as when needs of patients performs some task, go toilet, physical therapy etc., this layout can bring a difficult problem.In these cases, usually remove described pad, therefore adversely have ceased vascular treatment.Therefore, these controller assemblies suffer various defect, and reason is them and is not suitable with patient's transfer or movable, and are typically not suitable for expansion thigh pad, leg mat and foot pad.

So, it is desirable to overcome shortcomings and deficiencies of the prior art with a kind of compression therapeutic apparatus with controller, described compression therapeutic apparatus be suitable for expansion thigh, shank and foot cover and adapt to patient transfer and activity to provide continuous vascular treatment.It is desirable to the type that described system detects the cover be attached thereto automatically.Particularly it is desirable to described system and comprise pneumatic circuit, this pneumatic circuit is convenient to monitor that pressure is to realize advantage of the present disclosure with single pressure sensor.Can predict, easily and efficiently can manufacture described compression therapeutic apparatus.

Summary of the invention

Therefore, in order to overcome shortcomings and deficiencies of the prior art, provide a kind of compression therapeutic apparatus with controller, this compression therapeutic apparatus be suitable for expansion thigh, shank and foot cover and adapt to patient transfer and activity to provide continuous vascular treatment.Ideally, described system detects the type of the cover be attached thereto automatically.Most desirably, described system comprises pneumatic circuit, and this pneumatic circuit is convenient to monitor that pressure is to realize advantage of the present disclosure with single pressure sensor.Described compression therapeutic apparatus easily and manufactured efficiently.

According to principle of the present disclosure, described compression therapeutic apparatus can provide the pneumatic compressing of interval for preventing DVT.As will be discussed, described compression therapeutic apparatus can also comprise vein and recharge detection, and compact, quiet, lightweight, and battery supply is provided.Described compression therapeutic apparatus also have for each limbs provide individually order, the ability of gradient compressing and provide the motility of compressing for difference cover, it such as can comprise three air bags.As will be discussed, described cover can comprise thigh length and tears characteristic sum knee-length cover.In addition, described compression therapeutic apparatus can provide higher pressure, oppress slowly for foot cover.When using described system at whole treatment facility, described compression therapeutic apparatus provides unbroken DVT to prevent, and can be dressed and use continuously by patient in the whole risk phase.

Described compression therapeutic apparatus can be portable, thus for there being the patient suffering from DVT risk to provide continuous treatment.During patient activity and task, such as, shifting to check, going toilet, physical therapy etc., this structure is advantageously convenient to continuous print vascular treatment.Therefore, by providing a kind of controller, when not plugging in, this controller will drive with battery, and described compression therapeutic apparatus prevents from interrupting in the treatment, and will enough comfortable, compact with lightweight to move together with patient when needed.

Described compression therapeutic apparatus comprises controller, pipe group and cover.Such as, described compression therapeutic apparatus delivers air to a pair disposable pull by described pipe group, and a cover is used for limbs.Described cover can have three air bags respectively corresponding to ankle, shank and thigh.Described compression therapeutic apparatus oppresses one in limbs independently, left limbs or right limbs.The alternating expansion between when two limbs are all connected.Alternately, a cover is only had to be connected.

Alternately, described compression therapeutic apparatus is used as slowly oppressing foot unit.In this configuration, described compression therapeutic apparatus comprise a pair single use of alternative described cover, the disposable foot cover of monosaccate.Single foot cover can also be used.Described compression therapeutic apparatus also contemplates and on the first limbs, to use foot cover and use cover on the second limbs.

Described compression therapeutic apparatus comprises the pipe group connector port interlocked with the matching geometries in described pipe group.When described compression therapeutic apparatus starts to be powered, air is transferred by described port until the cover (i.e. lower limb cover or foot cover) which port of described system identification is connected to cover and what type is connected to those ports.Compression therapeutic is transported to the port be connected with suitable cover.

Such as, described compression therapeutic apparatus is provided for the clinical parameter of vascular treatment, such as the expansion period of 11 seconds, and be then the draining period of 20-60 second, this depends on that vein recharges measurement.The pressing time of 11 seconds is in order: start to expand at 0 second the first air bag.Start to expand at 2.67 seconds the second air bags, start to expand at 5.67 seconds the 3rd air bags.After 11 seconds, all three air bags discharges.The necessary preserving gradient of pressure between the phase of expansion, the first air bag is greater than the second air bag, and the second air bag is greater than the 3rd air bag.As an example, end cycle pressure can be that be 40mmHg in the second air bag, be 30mmHg in the 3rd air bag for 45mmHg in the first air bag.Compressing continues in this cyclic pattern, until described compression therapeutic apparatus is closed or described controller is reported to the police.

As another not limiting example, foot compressing parameter can comprise the expansion period of 5 seconds, be then with provide above oppress (20-60 second) identical draining period for overlapping.At the end of the phase of expansion of 5 seconds, the end cycle pressure of foot cover will have the setting pressure object of 130mmHg.

Vein recharges detection and may be used for described compression therapeutic apparatus.Vein recharges to detect to be included in the second described air bag collects a certain amount of air, and monitors when the vein in the limbs of patient is recharged by blood that pressure increases.When described compression therapeutic apparatus arrives setting pressure, at every 30 minutes thereafter, controller measure venous was recharged and is the drain time that any single limbs regulate between expansion period, from 20 seconds to 60 seconds.Recharge to measure from the longer vein of two limbs and will be used to regulate drain time.

Described compression therapeutic apparatus benefits from some advantages, comprises compact and lightweight so that the battery power controller that carries.Described compression therapeutic apparatus can also be used for one or two limbs and can provide slow compressing for foot cover.Described compression therapeutic apparatus can also detect the type of connected cover and automatically apply suitable compressing.

Described compression therapeutic apparatus also comprises the pneumatic circuit that is designed to described compression therapeutic apparatus to allow swelling gasbag and only to use a sensor monitoring pressure.Carry out pressure monitoring from the manifold side of solenoid valve and solve pressure drop valve, and have and only need a sensor to monitor the attendant advantages of the air bag of any connection.This structure advantageously leads to low manufacturing cost and low maintenance requirement, especially about pick up calibration.

In one embodiment, according to principle of the present disclosure, described compression therapeutic apparatus comprises the first air bag around limb support.Second air bag is also around described limb support.Described air bag and fluid fluid communication and described airbag inflation, make described first airbag inflation continue first time period, described second airbag inflation continued for the second time period.Described second time period starts in described first time period.Single pressure sensor and described first air bag and described second air bag are connected.Described pressure transducer is configured to the pressure monitoring each in described air bag.

Described compression therapeutic apparatus can comprise the controller be connected with source of pressurised fluid and pressure transducer.Described controller is configured to monitor and regulate the pressure in described air bag.Described controller can be arranged together with portable enclosure.Described shell can comprise multiple ports that can be connected to multiple air bag.

Whether the pressure at each place that described pressure transducer can monitor at described multiple port is attached thereto to determine air bag and representation signal is sent to described controller.Described controller can comprise the separate valves of the expansion regulating described air bag.Described compression therapeutic apparatus can limit pneumatic circuit.Described pressure transducer can be connected to described pneumatic circuit and be arranged between the described valve in described source of pressurised fluid and described pneumatic circuit.

Described compression therapeutic apparatus can comprise the 3rd air bag supported around foot.Described 3rd air bag and described fluid fluid communication, single pressure sensor and described air bag are connected.Described source of pressurised fluid alternately can make the air bag arranged around described limbs and the airbag inflation arranged around foot.

In an alternate embodiment, described compression therapeutic apparatus comprises more than first air bag around the first limb support.More than second air bag around the second limb support, described air bag and fluid fluid communication.First airbag inflation of described more than first air bag continues first time period, and the second airbag inflation of described more than first air bag continued for the second time period.Described second time period starts in described first time period.

First airbag inflation of described more than second air bag continued for the 3rd time period, and the second airbag inflation of described more than second air bag continued for the 4th time period.Described 4th time period starts within described 3rd time period.Single pressure sensor and described air bag are connected.Described source of pressurised fluid alternately can make the air bag arranged around described first limbs and the airbag inflation arranged around described second limbs.

In another alternate ways, described compression therapeutic apparatus can comprise more than first air bag around the first limb support and more than second air bag around the second limb support.Each air bag of described more than first air bag and described more than second air bag has the separate valves be connected with it.Described valve and fluid fluid communication.

First valve is opened, and make the first airbag inflation of described more than first air bag continue first time period, and the second valve is opened, and makes the second airbag inflation of described more than first air bag continue for the second time period.Described second time period starts in described first time period.3rd valve is opened, and makes the 3rd airbag inflation of described more than first air bag continue for the 3rd time period.Described 3rd time period starts within described second time period.

4th valve is opened, and make the first airbag inflation of described more than second air bag continue for the 4th time period, and the 5th valve is opened, and makes the second airbag inflation of described more than second air bag continue for the 5th time period.Described 5th time period starts within described 4th time period.6th valve is opened, and makes the 6th airbag inflation of described more than second air bag continue for the 6th time period.Described 6th time period starts within described 5th time period.Single pressure sensor and described air bag are connected.

Accompanying drawing explanation

It is believed that it is that novel object of the present disclosure and feature are specifically set forth in appended claim.The disclosure study carefully its tissue and mode of operation and further object and advantage can be understood best by reference to following description by reference to the accompanying drawings, described accompanying drawing is described below.

Fig. 1 is the front view of a detailed description of the invention of compression therapeutic apparatus according to principle of the present disclosure;

Fig. 2 is the side view of the compression therapeutic apparatus shown in Fig. 1;

Fig. 3 is the top view of the compression therapeutic apparatus shown in Fig. 1;

Fig. 4 is the rearview of the compression therapeutic apparatus shown in Fig. 1;

Fig. 5 is the schematic diagram of the pneumatic circuit of the compression therapeutic apparatus shown in Fig. 1;

Fig. 6 is the plane graph of cover of the compression therapeutic apparatus shown in Fig. 1 arranged around limbs;

Fig. 7 is an alternate embodiment of the cover shown in Fig. 6; With

Fig. 8 is another alternate embodiment of the cover shown in Fig. 6.

Detailed description of the invention

The vascular treatment that disclosed compression therapeutic apparatus and the exemplary embodiment of operational approach just comprise the preventative compressorium of the limbs being applied to health is discussed, and more specifically just has the compression therapeutic apparatus being suitable for expansion thigh, shank, ankle and foot cover and adapting to the controller of patient's transfer and activity and discusses.Can predict, described compression therapeutic apparatus may be used for preventing and overcome the risk be associated with patient's inertia.Can predict further, described compression therapeutic apparatus eliminates the situation that patient's inertia produces, thus such as prevents DVT, PE etc.Can predict, all types of vein compression system can be attributed to according to compression therapeutic apparatus of the present disclosure, include but not limited to preventative order compressorium.Term " preventative order " is to be understood as and limits general vein compression therapeutic apparatus described here.But can imagine, the disclosure can be applied to people and the similar patient of various fixed condition, the people of such as those experience operations, anesthesia, long-term bed recuperation, fat, old, malignant tumor, previously thromboembolism etc. and patient.

In discussion below, term " near-end " represents the structure division closer to the trunk for the treatment of target, and term " far-end " represents the part further from trunk.When using at this, term " treatment target " refers to the patient that experience uses the vascular treatment of compression therapeutic apparatus.According to the disclosure, term " doctor " refers to the individuality of execution compression therapeutic apparatus and can comprise paraprofessional personnel.

Below discuss the description comprising compression therapeutic apparatus, describe the typical method according to operate compression therapeutic apparatus of the present disclosure afterwards.Now by concrete with reference to by the exemplary embodiment shown in accompanying drawing and open.

Refer now to accompanying drawing, wherein in all some views, similar parts are referred to by similar Reference numeral.First with reference to figure 1-5, it illustrates the compression therapeutic apparatus 10 according to principles of construction of the present disclosure.Compression therapeutic apparatus 10 comprises shell 12.Shell 12 closes the parts (as can be seen in the schematic depiction in figure 5) of the controller 14 be arranged in wherein.

Shell 12 has half circle shape configuration and has the handle 16 along its peak 18, so that transfer and treatment target activity.Can imagine, shell 12 can have different structures and size, such as rectangle, spherical etc.Can imagine further, can by any suitable technique package shell 12, such as snap fit, binding agent, solvent welded, hot weld, ultra-sonic welded, screw, rivet etc.Alternately, shell 12 can integrally be formed or by multiple housing parts overall package, and can be transparent, opaque etc. substantially.Shell 12 can comprise rib, ridge etc. so that operation compression therapeutic apparatus 10.

The parts of shell 12 can by the material manufacture being suitable for medical application, and such as polymer or metal (such as rustless steel), this depends on the preference of specific medical application and/or doctor.Can predict and use semi-rigid and rigid polymer, and elastomeric material, such as molded medical grade polypropylene manufactures.But, according to the disclosure, it should be appreciated by those skilled in the art that being suitable for assembling and other material manufactured and manufacture method will be also suitable.

Shell 12 portability is so that carry out continuous vascular treatment to treatment target (not shown).Shell 12 comprises is convenient to the bracket 20 that shell 12 is releasably attached to such as hospital bed, workbench etc.Bracket 20 extends from the rear portion 22 of shell 12 and provides hook construction to hang shell 12 for the bed from treatment target etc.Can predict, bracket 20 can hang from the various structures for removably mounting casing 12, or alternately, shell 12 does not comprise bracket, but can be placed on floor or other stayed surface.Alternately, shell 12 comprises shoulder belt 24 as shown in Figure 2, and this shoulder belt allows during transfer shell 12 to be worn on it treatment target or doctor.Shoulder belt 24 can use or not use bracket 20 and such as can be fixed to any part of shell 12, comprises handle 16.

Compression therapeutic apparatus 10 uses the electronics AC/DC Switching Power Supply for operating its parts.Power line 26 is connected to shell 12 for parts electric power being transmitted to controller 14.Power line 26 is by access AC power supplies such as wall outlets.Controller 14 can comprise transformator or other electronic equipment for being connected to power supply.Can imagine, power line 26 can in order to store and be wound around bracket 20 between transfer and treatment target active stage.Can imagine further, described compression therapeutic apparatus 10 can comprise and keeps the storage of power line 26 to capture mechanism with shell 12.Mechanism is captured in described storage can comprise bungee, pulley etc.

The battery 28 that compression therapeutic apparatus 10 also uses the parts for controller 14 to power is so that transfer and treatment target activity.Battery 28 is placed in the battery case 30 of shell 12.Can predict, battery 28 can comprise one or more unit.Battery unit can be type lithium ion, etc.Can predict further, battery 28 rechargeable, and may be used for the working time of various scope, such as 6 hours, 8 hours, 10 hours, etc.Such as, power line 26 can be pulled out and be captured mechanism by the storage of shell 12 and be captured.Compression therapeutic apparatus 10 then with battery 28 power work and treatment target can walk about.

Can imagine, battery 28 can be installed to the outer surface of shell 12 or be separated with it.Can imagine further, compression therapeutic apparatus 10 can comprise the alternative source of power supply, such as solar energy, non-electricity etc., or alternately can not comprise battery supply.

Shell 12 has the control panel 32 be arranged on its front surface 34.Control panel 32 comprises controller for operating compression therapeutic apparatus 10 and indicator.Control panel 32 has light-emitting diode display 36, and this light-emitting diode display provides the condition prompting, message etc. of the various parts of system 10, and such as power, battery, cover identification and connection, expansion, discharge, vein recharge, mistake etc.Control panel 32 also comprises the hand switch etc. for powering for system 10.Can predict, such switch is the membrane switch etc. started by finger pressure.

The rear portion 22 of shell 12 limits port 38,40 (Fig. 4).Port 38,40 comprises output port 38a, 38b, 38c respectively, and output port 40a, 40b, 40c.As will be discussed, output port 38a, 38b, 38c and output port 40a, 40b, 40c are communicated with inflatable chamber 48a, 48b, 48c fluid overlapping 48 respectively with the inflatable chamber 46a of compressing cover 46,46b, 46c and compressing, and described inflatable chamber is configured to be arranged on around the lower limb for the treatment of target by matching connector 42 and pipe group 44.Output port 38a, 38b, 38c, 40a, 40b, 40c are configured to be connected to pipe group 44.Each port 38,40 can be connected to specific compressing cover, such as lower limb cover, foot cover etc.

Shown in pneumatic circuit as shown in Figure 5, port 38,40 is also connected with the parts of the controller 14 be arranged in shell 12 so that the compressing cover selected that expands.As will be discussed, controller 14 comprises source of pressurised fluid, the pump 50 be such as communicated with valve manifold 52 fluid for connectivity port 38,40.Pump 50 comprises the motor of air compressing to valve manifold 52 by piping etc.The speed of Electronic Control pump motor is with as required for each output pressure provides corresponding compressor speed.Can predict, the power panel comprising necessary electronic equipment, circuit, software etc. well known by persons skilled in the art is connected to other parts of pump engine and controller 14 to regulate its power.Can imagine, pump 50 can be membrane pump.

As will be discussed, controller 14 also comprises check-valves 54, recharges between detection period at vein, and when monitoring gasbag pressure, described check-valves prevents air from leaking back through pump 50.Air relief valve 56 is arranged to prevent from oppressing the overvoltage in cover together with pneumatic circuit.Air relief valve 56 is configured to release excess air pressure if desired.Can predict, various types of valve can be used, such as spring-loaded plunger valve etc.

Valve manifold 52 comprises solenoid valve 58a, 58b, 58c, 60a, 60b, 60c of being connected to output port 38a, 38b, 38c, 40a, 40b, 40c respectively.Solenoid valve 58a, 58b, 58c, 60a, 60b, 60c all have the related solenoid of the control processor electric drive by controller 14.Solenoid is connected to the valve seat of each specific solenoid valve 58a, 58b, 58c, 60a, 60b, 60c, makes the described valve seat when starting solenoid operationally open and close respective solenoid valve.For example, see the U.S. Patent No. 5,876 of the people such as Bock, the solenoid valve described in 359, the whole content of described patent is incorporated into this with for referencial use.Can predict, other instruction that electronic equipment, circuit, software etc. that the control processor of controller 14 comprises necessity well known by persons skilled in the art sense with the parts of the change condition and controller 14 that respond compression therapeutic apparatus 10 and measure and start solenoid valve 58a, 58b, 58c, 60a, 60b, 60c.Can imagine, one or more solenoid valve can be used, or alternately, the valve of other type can be used.

Solenoid valve 58a, 58b, 58c, 60a, 60b, 60c and their related valves parts are installed to the port 38,40 on the inside of shell 12.Solenoid valve 58a, 58b, 58c, 60a, 60b, 60c are dibit, threeway normally close valve, and it has opening 62a, 62b, 62c, 64a, 64b, 64c respectively.At open position, air flows to correlation output port 38a, 38b, 38c by opening 62a, 62b, 62c, 64a, 64b, 64c, 40a, 40b, 40c and enter the inflatable chamber 48a of the compressing inflatable chamber 46a of cover 46,46b, 46c and compressing cover 48,48b, 48c.In closed position, opening 62a, 62b, 62c, 64a, 64b, 64c are blocked, and from compressing cover 46, the air of 48 passes through output port 38a, 38b, 38c, 40a, 40b, 40c and passes through the discharge port 66a of related valves, 66b, 66c, 68a, 68b, 68c backflow to shrink inflatable chamber 46a, 46b, 46c, 48a, 48b, 48c.

Solenoid valve 58a, 58b, 58c, 60a, 60b, 60c in order by the inflatable chamber 46a that operates to pressurize, 46b, 46c, 48a, 48b, 48c and under the control processor of controller 14 for it provides pressurized in sequence and discharges described room.Can predict, when needing the cooling down operation of cover, solenoid valve 58a, 58b, 58c, 60a, 60b, 60c can optionally be activated, for example, see the U.S. Patent No. 5,876,359 of the people such as Bock.

The pulse width modulating signal that solenoid valve 58a, 58b, 58c, 60a, 60b, 60c are provided by the control processor of controller 14 drives.Solenoid drive signal is initially in the high power level for starting solenoid valve fast and initiatively.After the initial startup, can drive singal be reduced, such as, reduce 70% and start with maintaining valve, reduce power consumption thus.Can imagine, can stop using solenoid valve 58a, 58b, 58c, 60a, 60b, 60c as required.Can imagine further, the control processor of controller 14 comprises the ability of the state of inspection solenoid valve 58a, 58b, 58c, 60a, 60b, 60c.When the condition change of solenoid valve 58a, 58b, 58c, 60a, 60b, 60c, their state of control processor inspection.Such as, if particular valve short circuit detected or open, compression therapeutic apparatus 10 will enter particular error pattern, and this will discuss.

Controller 14 also comprises the pressure transducer 66 be arranged in shell 12.Pressure transducer 66 is connected to pneumatic circuit by piping etc. and is arranged in pump 50 and between solenoid valve 58a, 58b, 58c, 60a, 60b, 60c.Pressure transducer 66 be communicated with inflatable chamber 46a, 46b, 46c, 48a, 48b, 48c fluid for monitor inflatable chamber 46a, 46b, 46c, 48a, 48b, 48c each in pressure.The control processor guiding pressure sensor 66 of controller 14 is measured and is connected to their respective solenoid valves and the inflatable chamber 46a be therefore in fluid communication with it, any one in 46b, 46c, 48a, 48b, 48c.Manifold side pressure transducer 66 being arranged in pneumatic circuit before solenoid valve is advantageously convenient to only use single pressure sensor for the pressure measured in inflatable chamber.This structure is convenient to one or more inflatable chamber that expands.This structure also advantageously reduces the volume of controller 14 to contribute to the compact of compression therapeutic apparatus 10 and lightweight design, is convenient to transfer, patient activity and minimizing manufacturing cost.

Such as, during the compressing cycle selected, solenoid valve 58a, 58b, 58c, 60a, 60b, 60c are sequentially energized to arrive open position for the inflatable chamber 46a that pressurizes in order, 46b, 46c, 48a, 48b, 48c.At open position, solenoid valve 58a, 58b, 58c, 60a, 60b, 60c allow air from pump 50 by respective output port 38a, 38b, 38c, and 40a, 40b, 40c arrive inflatable chamber.Pressure transducer 66 monitor the inflatable chamber 46a of pneumatic circuit, 46b, 46c, 48a, 48b, 48c each and provide the signal of telecommunication to export for feedback control for the control processor of controller 14.

When the compressing end cycle selected, solenoid valve 58a, 58b, 58c, 60a, 60b, 60c are arrived the closed position being used for disconnecting pump 50 from cover 46,48 by power-off simultaneously.In closed position, pump 50 air is blocked and cover pressure is discharged into air by the discharge port 66a on valve manifold 52,66b, 66c, 68a, 68b, 68c by solenoid valve 58a, 58b, 58c, 60a, 60b, 60c.Can predict, compression therapeutic apparatus 10 can room between alternating expansion first limbs and the second limbs.Can predict further, compression therapeutic apparatus 10 can expand each air bag individually.

With reference to figure 6, compression therapeutic apparatus 10 similar to the above is assembled and pack for use.In operation, compression therapeutic apparatus 10 comprises the above-mentioned controller 14 arranged together with shell 12, and cover 112.Cover 112 comprises thigh air bag 114, calf bladder 116 and ankle air bag 118.Cover 112 comprises the adapter 120 coordinated with matching connector 42, and described matching connector is connected to port 38 by piping 44.Adapter 120 is communicated with by the room fluid of pipe group 122 with cover 112.Therefore, this structure is convenient to air bag 114, fluid between 116,118 and pump 50 is communicated with.Can predict at this, adapter 120 may further include the valve system controlling fluid stream.

There is provided and arrange for the lower limb L around treatment target (not shown) with operating sleeve 112.Adapter 120 and matching connector 42 coordinate and are communicated with to set up fluid between cover 112 and pneumatic circuit.Cover 112 is wound around lower limb L and is fixed with it by hook and ring pad 124,126.Can predict, compression therapeutic apparatus 10 can with being similar to the compressing cover of cover 112 by the Article 2 lower limb connecting treatment target with port 40.As described in alternate embodiment below, in the compressing cycle replaced with the following compressing cycle being used for the treatment of lower limb L, treat Article 2 lower limb.

The above-mentioned portable nature of shell 12 and controller 14 provides a kind of compression therapeutic apparatus 10 being convenient to transfer and treatment target activity.When using described system at whole treatment facility, this favorable structure provides unbroken DVT and prevents, and can be dressed and use continuously by treatment target in the whole risk phase.During treatment target activity and task, such as shifting to check, going toilet, physical therapy etc., compression therapeutic apparatus 10 is advantageously convenient to continuous print vascular treatment.By providing controller 14, when do not plug in line time this controller will drive with battery 28, compression therapeutic apparatus 10 prevents from interrupting in the treatment, and will enough comfortable, compact with lightweight to move together with treatment target when needed.

The hand switch of the control panel 32 of controller 14 connects compression therapeutic apparatus 10 for being its power supply.When compression therapeutic apparatus 10 is initially switched on, carry out a series of self-test by the control processor of controller 14.The LED indicator of display 36 is lit and can hears that prompting sounding is to check the operability of audiovisual indicator.Display 36 is opened to check display operability.The operability of the software of control processor also checked by controller 14.If any one checks unsuccessfully, error code provides representativeness can listen and/or visual cues.

Can predict, if the control processor of controller 14 can not continue normal running software, error code will be triggered.This causes compression therapeutic apparatus 10 reset and restart normal operating.Cover 112 will discharge during restart routine.Can listen and can also be used for representing condition with visual cues.

Once complete the self-test sequence for compression therapeutic apparatus 10, controller 14 starts to overlap trace routine to determine one or more types of the cover being connected to port 38,40.After controller 14 is initially energized, carry out cover during the cycle in the first expansion (detection) detect.During described sense cycle, pump 50 is worked two seconds, or until pressure arrives default threshold value, air is alternately conducted through port 38,40.After one second, pressure transducer 66 carries out pressure measxurement to determine whether air bag is connected to specific output port 38a, 38b, 38c, 40a, 40b or 40c under cover detects.

Such as, for carrying out the trace routine of air bag 114,116,118 for each of overlapping port 38,40.If do not have counter-pressure in the specific outlet port for being connected with air bag, then the control processor determination air bag of controller 14 is not for specific outlet port.The cover structural accommodation compression therapeutic of described control processor correspondingly for detecting.For 3 Air sac covers, counter-pressure detected when being connected to controller 14 at air bag 114,116,118.Can predict, if this program does not detect cover at port 38 or 40, if or the structure detected unrecognized.Then by listening prompting trigger low-voltage mistake accordingly.Can predicting further, according to the requirement of application-specific, can using for detecting expansion and tonometric various timing period.

Alternately, thigh air bag 114 can be removed from calf bladder 116.Such as, calf bladder 116 is removably connected to thigh air bag 114 by porose connector, for example, see disclosed in 23 days February in 2004, denomination of invention is " compressorium ", serial number is No.10/784, cover described in the U.S. Patent application of 607, the full content of described application is incorporated into this with for referencial use.For dismountable thigh air bag 114, the control processor of controller 14 performs similar cover trace routine, as mentioned above.Flowing limiting valve (not shown) owing to being equipped with adapter 120 is detected 3 Air sac covers by control processor.For example, see disclosed in 23 days February in 2004, denomination of invention is " fluid passage electrical connector ", serial number is No.10/784, the flowing limiting valve described in the U.S. Patent application of 639, the full content of described application is incorporated into this with for referencial use.The counter-pressure that described flowing limiting valve simulation thigh 114 produces when the air bag in fact do not connected.Therefore, be converted to 2 air bag knee-length from 3 air bag thigh length covers and overlap not appreciable impact compressing parameter, and controller 14 continues vascular treatment, just still complete as thigh 114.

In an alternate embodiment, as shown in Figure 7, overlap 112 and comprise thigh air bag 114 and single entry second air bag 218.Second air bag 218 has lower leg portion 220 and ankle part 222.Pump 50 is fluidly communicated with cover 112 by valve connector 224 and independent piping 226,228, uses with similar to the above, comprises being waited by perforation selectively dismantling thigh 114.

For in the specific compressing cycle of compression therapeutic apparatus 10, compressing parameter comprises the phase of expansion of 11 seconds for swelling gasbag 114,116,118, is then the discharge of 60 seconds for shrinking air bag 114,116,118.The phase of expansion of 11 seconds is sequenced:

1) started initial bubble ankle air bag 118 at 0 second and continue first time period;

2) thereafter and during first time period, start expand calf bladder 116 and continued for the second time period, the beginning of the second time period overlapped with persistent period of about 2.67 seconds of first time period;

3) thereafter and during the second time period, start expand thigh air bag 114 and continued for the 3rd time period, the beginning of the 3rd time period overlapped with the persistent period of the persistent period of about 3.0 seconds of the second time period and about 5.67 seconds of first time period;

4) after 11 seconds of first time period, discharge air bag 114,116 and 118 also continues minimum 20 seconds maximum 60 seconds.An example has been shown in table 1 below.

Table 1

Can predict, lower limb L terminated to measure the discharge cycle to next expansion period from the first expansion period.Can predict further, two limbs for the treatment of target can be treated the vascular treatment and compression therapeutic apparatus 10 hockets from lower limb L to Article 2 lower limb.Can imagine, terminate to change within 4.5-24.5 second to the time period the expansion period for Article 2 lower limb from the expansion period for lower limb L.

During the initial bubble cycle being used for the treatment of lower limb L as above, pump 50 starts default low-voltage, thus at initial period only swelling gasbag 114,116,118.Solenoid valve 58a, 58b, 58c are energized to arrive open position as above, make described valve open to use the cycle sequential of expectation that air is delivered to ankle air bag 118, then to calf bladder 116, then to the thigh air bag 114 of cover 112.Pressure transducer 66 monitors the pressure in each of air bag 114,116,118 the compressing cycle of whole 11 seconds.At the end of expansion period, pump 50 stop and solenoid valve 58a, 58b, 58c power-off to arrive closed position, thus by discharge port 66a, 66b, 66c allow air bag 114,116,118 shrink.

Can imagine, if the Article 2 lower limb for the treatment of target is for vascular treatment, solenoid valve 60a, 60b, 60c are energized to arrive open position as above, make described valve open to use the cycle sequential of expectation to be delivered to by air to be similar to the corresponding air bag of the cover arranged around Article 2 lower limb of cover 112.Pressure transducer 66 monitors the pressure in each of described corresponding air bag the compressing cycle of whole 11 seconds.At the end of expansion period, pump 50 stop and solenoid valve 60a, 60b, 60c power-off to arrive closed position, thus allow described corresponding air bag to shrink by discharge port 68a, 68b, 68c.Can predict further, the expansion period being used for the treatment of Article 2 lower limb can start for about 24.5 seconds after completing the expansion period being used for the treatment of lower limb L.This process can be repeated for the cycle relevant with two legs.

In this embodiment, the pressure preserving gradient of the air bag 114,116,118 measured with the corresponding signal of the control processor being relayed to controller 14 by pressure transducer 66 during expansion period, the pressure of ankle air bag 118 is greater than the pressure of calf bladder 116, and the pressure of calf bladder 116 is greater than the pressure of thigh air bag 114.End cycle pressure such as comprises, and is 45mmHg in ankle air bag 118, is 40mmHg in calf bladder 116, is 30mmHg in thigh air bag 114.An example has been shown in table 2 below.Can predict, in this cyclic pattern, compressing continues, until compression therapeutic apparatus 10 is closed or controller 14 passes through can listen or visual cues misdirection code.It is also envisioned that other cycle pressure.

Table 2

For described for the expansion period after the initial bubble cycle of lower limb L, pressure feedback adjustment is carried out in the pressure measxurement can carried out according to pressure transducer 66.When the initial bubble end cycle for lower limb L, the end cycle pressure in ankle air bag 118 is measured by pressure transducer 66 and is compared with the setting pressure of 45mmHg by the control processor of controller 14.If the pressure of ankle air bag 118 is higher or lower than setting pressure, then needs the corresponding reduction of the speed of pump 50 or increase to reduce or increase pressure conveying.Pump speed regulates based on following calculating:

Regulate=| 45-P|, wherein P=is at the pressure at ankle place.

If described pressure is less than setting pressure, then the pump speed for next cycle is increased regulated quantity.If described pressure is greater than setting pressure, then the pump speed for next cycle is reduced regulated quantity.Can predict, even after reaching setting pressure scope, adjustment process also continues.Can predict further, compression therapeutic apparatus 10 can regulate independent pump speed for each cover being connected to controller 14.It is also envisioned that other order compressing cycle.

In an alternate embodiment, compression therapeutic apparatus 10 performs vein and recharges measure of time.Vein recharges the time (VRT) measures is that volume of air traces technology, and this technology determines when the vein of limbs after the compressing cycle is recharged by blood completely.For example, see the U.S. Patent No. 6,231 of the people such as Watson, the vein described in 352 recharges measure of time, and the full content of described patent is incorporated into this with for referencial use.VRT makes blood keep the time span stagnated to minimize at intravenous.VRT will substitute the default time of having a rest (60 seconds), and prerequisite is VRT in 20-60 second.If VRT is less than 20 seconds, then use the default value of 20 seconds.If VRT is greater than 60 seconds, then use the maximum of 60 seconds.Arrive setting pressure first when system and carry out VRT measurement every 30 minutes thereafter.Can predict, VRT technology and calculating method may be used for both cover and foot compressing.

VRT measures and uses volume of air to trace technology, wherein applies low pressure to calf bladder.When vein is by hemoperfusion, the pressure in calf bladder increases, until reach steady.Making pressure reach the time steadily used is VRT.If two covers are connected to controller 14, then individually for each just oppressed limbs determine VRT and two measure in the greater be used as the new drain time in compressing cycle.Be that each cover carries out VRT measurement when each certain set reaches setting pressure independently.But, do not upgrade drain time, until be that two covers calculate VRT measurement.

Such as, compression therapeutic apparatus 10 can use VRT to measure after system starts vascular treatment.Subsequently, after past 30 minutes, VRT measurement will be carried out complete expansion period at the next one.After any one expansion in above-mentioned cover, one or more air bags of certain set are discharged and drop to zero in default expansion period.

Can predict, be closed with the floss hole of air bag when pressure drop is monitored to gasbag pressure selected during 5-7mmHg.If the pressure in current cycle air bag is 5-7mmHg, then carry out VRT measurement.If the pressure in air bag does not discharge and drops to 5-7mmHg, then drain time fell to remain on its currency and fall and carried out another measurement in 30 minute.If made a mistake, then corresponding alarm provides and can listen and/or visual cues.

VRT Measurement Algorithm determines when steady the pressure in selected air bag is after compressing.Will individually for two legs determines VRT.Two comparatively elders recharging the time will be used as new drain time.Apply compressing iff to one leg, then the VRT for that lower limb is used as new drain time.VRT Measurement Algorithm starts from the timer from the end of expansion period, occurs in selected air bag described expansion period and reaches 5-7mmHg (causing air bag to keep the enough pressure with the surface contact of lower limb) and after discharging and stopping.VRT Measurement Algorithm starts from the timer from the end of described expansion period.

Then the pressure in selected air bag is monitored.As an example, described pressure is monitored with the mobile sampling window of 10 seconds.Described window moves with the interval of 1 second.When first in window and the difference between last value are less than about 0.3mmHg, curve reaches its plateau.VRT measurement is regarded as completing, and the period is determined.The point that the terminal Venous system be regarded as in limbs of window is recharged.

Do not rely on VRT to measure, before the next one compressing cycle on identical limbs starts, allow selected air bag discharge at least 15 seconds.As safety coefficient, for the time of recharging of measuring increases by 5 seconds, thus limbs can not be oppressed too early.Can predict, the time of recharging that drain time can equal to measure adds 5 seconds.Such as, as the result of patient's movement, the standard deviation in sampling window may be too high, thus make measurement occur mistake.In this, result of calculation is dropped and uses VRT value in the past.If the pressure in air bag selected by any time during measuring is less than 2mmHg, then VRT measurement be considered to be mistake, result of calculation is dropped, and use before VRT value.This may occur to deposit in systems in which in the case of a leak.Can predict, if any time pressure during VRT measures is greater than 20mmHg, then use former VRT value.Can predict further, if carried out VRT measurement for two legs, then use the longer VRT of two legs.Can imagine, if the VRT calculated is greater than 60 seconds, then use the value of 60 seconds.If the VRT calculated is less than 20 seconds, then use the value of 20 seconds.

Alternately, compression therapeutic apparatus 10 can use in following error code one, multiple or all to provide listening and/or visual cues of system mistake or fault.The safety for the treatment of target during these features advantageously enhance vascular treatment.Some error conditions can cause compression therapeutic apparatus 10 provide alarm and stop the specific compressing cycle.Can predict, compression therapeutic apparatus 10 can glitter error indicator, sends continuous signal sound, etc., cause user to reset compression therapeutic apparatus 10.Controller 14 can be in following error condition, multiple or all provide false alarm: high pressure mistake, comprises those that exceed setting pressure and measures pressure; Low pressure mistake, comprises and measures pressure and cover do not detected lower than those of setting pressure; System pressure mistake, is included in the pressure outside the parameter expected determined in expansion period; Valve mistake; Software error; Pump mistake; Discharge and contraction mistake; Battery mistake; With temperature mistake, be included in the mensuration temperature outside specific environmental condition.

In an alternate embodiment, as shown in Figure 8, comprise with the compression therapeutic apparatus 10 of the above-mentioned type the foot cover 312 that the foot being configured to treatment target provides vascular treatment.Foot cover 312 comprises air bag 314, and described air bag air expansion is to apply pressure to foot and then to shrink.For example, see disclosed in 23 days February in 2004, denomination of invention is " compressorium ", serial number is No.10/784, the cover described in the U.S. Patent application of 604, the full content of described application is incorporated into this with for referencial use.

Pump 50 is fluidly communicated with foot cover 312.Cover 312 comprises the adapter 316 coordinated with matching connector 42, and described matching connector is connected to port 40 by piping 44.Valve connector 316 is communicated with by air bag 314 fluid of piping 318 with cover 312.Therefore, the fluid that this structure is convenient between air bag 314 and pump 50 is communicated with.Foot cover 312 is wound around sufficient sidepiece by crossing the hook on sufficient instep and ring-like brace 320 and hook and ring-like connection ankle bands 322.

Be similar to the described self-test order compressing being used for the treatment of system 10 once complete, controller 14 starts to overlap trace routine to determine one or more types of the cover being connected to port 38,40.About foot cover 312, detect counter-pressure by the control processor of the controller 14 corresponding to air bag 314, described air bag is connected to outlet port 40b.Can predict, compression therapeutic apparatus 10 also can treat lower limb L as mentioned above with the foot of the Article 2 lower limb of foot cover 312 treatment target in the alternating expansion cycle.

For in the specific typical compressing cycle of foot cover 312, compressing parameter comprises the phase of expansion of 5 seconds, is then the discharge of 60 seconds.An example has been shown in table 3 below.

Table 3

Can predict, the foot for the treatment of target terminated to measure draining period to next expansion period from an expansion period.Can predict further, two limbs for the treatment of target can be treated the vascular treatment and compression therapeutic apparatus 10 hockets from lower limb L to Article 2 lower limb.Can imagine, terminate to change within 7.5-27.5 second to the time period the expansion period for Article 2 lower limb from the expansion period for lower limb L.

During the initial bubble cycle of foot being used for the treatment of object as above, pump 50 starts default low-voltage, thus at initial period only swelling gasbag 314.Solenoid valve 60b is energized to arrive open position as above, makes described valve open to use the cycle sequential of expectation that air is delivered to air bag 314.Pressure transducer 66 monitors the pressure in air bag 314 the compressing cycle of whole 5 seconds.At the end of expansion period, pump 50 stop and solenoid valve 60b power-off to arrive closed position, thus by discharge port 68b allow air bag 314 shrink.

Can imagine, if second for the treatment of target is enough to be used in vascular treatment, solenoid valve 58b is energized to arrive open position as above, makes described valve open to use the cycle sequential of expectation to be delivered to by air to be similar to the corresponding air bag of the foot cover of arranging around another one leg of foot cover 312.Such as, pressure transducer 66 monitored the pressure in described corresponding air bag the compressing cycle of whole 5 seconds.At the end of expansion period, pump 50 stop and solenoid valve 58b power-off to arrive closed position, thus allow described corresponding air bag to shrink by discharge port 66b.Can predict further, the expansion period being used for the treatment of second foot can start for about 27.5 seconds after completing the expansion period being used for the treatment of the foot that foot cover 312 is treated.This process can be repeated for the cycle relevant with two foots, or alternately, for the foot cover of Article 1 lower limb and the lower limb cover of Article 2 lower limb repeat this process.Can predict, compression therapeutic apparatus 10 can provide alternately compressing for any combination of cover and foot cover, if use such combination, then be 6 seconds of all draining period increases such as additional emissions time cushion after foot expansion period, thus with default, total time overlap that to oppress parameter consistent.Other cycle time can be predicted.

In this embodiment, the object pressure measured by pressure transducer 66 and the corresponding signal of the control processor being relayed to controller 14 is such as 130mmHg.Can predict, oppress and continue in this cyclic pattern, until compression therapeutic apparatus 10 is closed or controller 14 passes through can listen or visual cues misdirection code.

For described for the expansion period after the initial bubble cycle of foot cover 312, pressure feedback adjustment is carried out in the pressure measxurement can carried out according to pressure transducer 66.When the initial bubble end cycle for foot cover 312, the end cycle pressure in air bag 314 is measured by pressure transducer 66 and is compared with the setting pressure of 130mmHg by the control processor of controller 14.If the pressure of air bag 314 is higher or lower than setting pressure, then needs the corresponding reduction of the speed of pump 50 or increase to reduce or increase pressure conveying.Pump speed regulates based on following calculating:

Regulate=| 130-P|, wherein P=is at the pressure at foot place.

Will be understood that, various amendment can be carried out to embodiment disclosed herein.So above description is not to be construed as limiting, but only should be understood as that the citing of various embodiment.After invest this claim scope and spirit in those skilled in the art can imagine that other is revised.

Claims

1. a compression therapeutic apparatus, comprising:

Around the first and second air bags of limb support;

For monitoring the pressure transducer of the pressure of described first and second air bags;

For controlling the check-valves that fluid flows relative to fluid source, wherein said first and second air bags, pressure transducer and check-valves and described fluid fluid communication, and wherein, described check-valves is arranged between described fluid source and described pressure transducer.

2. compression therapeutic apparatus as claimed in claim 1, comprises the controller be connected with described fluid source and described pressure transducer further, and described controller is configured to monitor and regulate the pressure in described first and second air bags.

3. compression therapeutic apparatus as claimed in claim 2, wherein, described compression therapeutic apparatus also comprises the shell of closed described controller, and described shell comprises multiple ports that can be connected to described first and second air bags.

4. compression therapeutic apparatus as claimed in claim 3, whether the pressure at each place that wherein said pressure transducer monitors at described multiple port is attached thereto to determine air bag and representation signal is sent to described controller.

5. a compression therapeutic apparatus, comprising:

Around at least one air bag of limb support;

For monitoring the pressure transducer of the pressure of each of at least one air bag described; With

For controlling the check-valves that fluid flows relative to fluid source, wherein said check-valves is arranged between fluid source and pressure transducer.