WO2006091093A2 - An apparatus for treating a patient with ultrasound, as wellas an ultrasound treatment head for use in said apparatus - Google Patents

An apparatus for treating a patient with ultrasound, as wellas an ultrasound treatment head for use in said apparatus Download PDF

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Publication number
WO2006091093A2
WO2006091093A2 PCT/NL2006/050005 NL2006050005W WO2006091093A2 WO 2006091093 A2 WO2006091093 A2 WO 2006091093A2 NL 2006050005 W NL2006050005 W NL 2006050005W WO 2006091093 A2 WO2006091093 A2 WO 2006091093A2
Authority
WO
WIPO (PCT)
Prior art keywords
ultrasound
vacuum cup
treatment head
patient
active element
Prior art date
Application number
PCT/NL2006/050005
Other languages
French (fr)
Other versions
WO2006091093A3 (en
Inventor
Theodorus Johannes Virginia Caberg
Original Assignee
Enraf Nonius B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Enraf Nonius B.V. filed Critical Enraf Nonius B.V.
Priority to EP06700805A priority Critical patent/EP1835966A2/en
Publication of WO2006091093A2 publication Critical patent/WO2006091093A2/en
Publication of WO2006091093A3 publication Critical patent/WO2006091093A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/225—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves
    • A61B17/2251—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves characterised by coupling elements between the apparatus, e.g. shock wave apparatus or locating means, and the patient, e.g. details of bags, pressure control of bag on patient
    • A61B2017/2253—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves characterised by coupling elements between the apparatus, e.g. shock wave apparatus or locating means, and the patient, e.g. details of bags, pressure control of bag on patient using a coupling gel or liquid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/30—Surgical pincettes without pivotal connections
    • A61B2017/306—Surgical pincettes without pivotal connections holding by means of suction

Definitions

  • the invention relates to an apparatus for treating a patient with ultrasound, comprising an ultrasound generator and an ultrasound treatment head provided with an active element for converting an electric ultrasound signal from the ultrasound generator into ultrasound, to an ultrasound treatment head for use in such an apparatus and to a method for placing the ultrasound treatment head on a part of the patient's body that is to be treated.
  • the ultrasound treatment head When the known apparatus is used in the treatment of a patient with ultrasound, the ultrasound treatment head is placed on the patient ' s skin at the location where the treatment is to be carried out.
  • An acoustic coupling medium in the form of a gel is used so as to realise a good acoustic coupling and thus an adequate transfer of energy.
  • the treatment head According to the classical manner of treatment, the treatment head is continuously moved by the person in attendance so as to achieve a maximum result and prevent damage of tissue caused by an excess amount of acoustic energy.
  • the drawback of this classical method of treatment is that the person in atten- dance in fact carries out the treatment himself and consequently must stay with the patient during the treatment .
  • the object of the invention is to provide an appa- ratus of the above kind in which one or more of the aforesaid drawbacks are obviated.
  • the apparatus is according to the invention characterized in that the ultrasound treatment head comprises a vacuum cup, by means of which the treatment head can be fixed to a part of the patient 1 S body that is to be treated, which vacuum cup comprises a holding space for a gel pad, with the apparatus comprising a vacuum pump that can be connected to the vacuum cup.
  • the ultrasound treatment head can be fixed to the part of the patient's body that is to be treated in a relatively simple manner by using an underpressure that is generated in the vacuum cup by the vacuum pump.
  • the person in attendance does not need to stay with the patient during the treatment.
  • the treatment can take place with a relatively low intensity of the ultrasound, and a good acoustic contact that remains constant during the treatment is ensured as a result of the fixation of the treatment head to the part of the body that is to be treated.
  • the invention furthermore provides an ultrasound treatment head for the apparatus according to the invention, which ultrasound treatment head is characterized by a vacuum cup in which the active element is mounted, wherein the va ⁇ - uum cup comprises a holding space for a gel pad, which on the one hand provides a good acoustic coupling between the skin and the active element and which on the other hand prevents the medium used for realising the acoustic coupling from reaching the vacuum part of the apparatus or the treatment head.
  • the invention provides a method for placing such an ultrasound treatment head on a part of a patient's body that is to be treated, wherein according to the invention a gel pad is placed in the holding space in the vacuum cup and the vacuum cup holding the gel pad is placed on said part of the patient's body, and wherein an underpressure is generated in the vacuum cup.
  • Fig. 1 is a perspective view of an embodiment of the ultrasound treatment head of the apparatus according to the invention for treating a patient with ultrasound.
  • Fig. 2 is a schematic cross-sectional view of the ultrasound treatment head that is shown in Fig. 1.
  • Fig. 3 is a schematic side view of part of the ul- trasound treatment head of Fig. 1.
  • Fig. 4 is a block diagram of an embodiment of the apparatus according to the invention.
  • Figs . 1 and 2 show an ultrasound treatment head 1 of an apparatus for treating a patient with ultrasound that is very schematically represented in Fig. 4. Said apparatus is furthermore provided with an ultrasound generator 20, which is known per se, to which the treatment head 1 can be connected.
  • the treatment head 1 is provided with an active element 2 mounted on a carrier 3, which components are shown in side view in Fig. 3 and in cross-sectional view in Fig. 2.
  • the carrier 3 comprises a connecting element 4 for a line 5 only partially shown in Fig. 2.
  • the carrier 3 further comprises a mounting disc 6, to which the active element 2 is mounted by means of a screwed connection 7 in the illustrated embodiment, with an 0-ring 8 providing a seal.
  • the line 5 is configured as a combination of a vacuum line 9 and an electric line 10.
  • the electric line 10 is sealingly passed through the mounting disk 6 to the active element 2.
  • the electric line 10 provides the electrical connection between the electronic components, which are known per se, and the ultrasound crystal that form part of the active element 2. These components are not shown in the drawing.
  • the carrier 3 is mounted in a vacuum cup 11 together with the active element 2, which vacuum cup is made of a deformable material, such as silicone rubber.
  • a holding space 13 for a gel pad 14 (indicated by a dashed line ⁇ is present between the active element 2 and the bottom edge 12 of the vacuum cup 11, which gel pad provides a good acoustic coupling between the active element and the part of the patient's body on which the vacuum cup 11 is placed.
  • gel pads which are known per se, comprise a chemical composition which exhibits excellent acoustic properties and which is more or less dimensionalIy stable. Said gel pads are supplied in an airtight package. When the gel pad is to be used, it is removed from the package and placed into the holding space 13. Exposure to air causes the gel pad to harden and after some time it is no longer usable.
  • the gel pads are very suitable for use in the vacuum cup 11. The gel pad will retain its shape and the underpressure will not lead to the material of the gel pad being sucked out .
  • the vacuum line 9 is connected to a vacuum pump 21, which preferably forms part of the apparatus for treating the patient with ultrasound that is schematically shown in Fig. 4.
  • a vacuum pump 21 which preferably forms part of the apparatus for treating the patient with ultrasound that is schematically shown in Fig. 4.
  • the person in attendance places a gel pad 14 in the holding space 13, after which the treatment head 1 can be placed at the desired location on the part of the patient's body that is to be treated.
  • an underpressure is generated in the vacuum cup 11, which underpressure ensures that the treatment head 1 is held in place on the part of the patient's body that is to be treated.
  • the treatment head 1 sucks itself to the patient's skin, as it were.
  • the underpressure that is generated by the vacuum pump is adjustable, for example by adjusting means 22 as schematically indicated in Fig. 4.
  • the underpressure is preferably adjustable within a range from 0 to about 500 mbar. This enables the person in attendance to adjust the underpressure in dependence on the part of the pa- tient's body and the nature thereof so as to ensure a proper fixation of the treatment head without any inconvenience to the patient.
  • the apparatus comprises an automatic control circuit that maintains the underpressure in the vacuum cup 11 at the adjusted level.
  • the person in attendance can adjust the intensity of the ultrasound that is generated to a desired level by adjusting means 23, in such a manner that the risk of tissue damage is excluded. Since the ultrasound treatment head 1 is fixed to the patient's skin as a result of the underpressure, the presence of the person in attendance during the treatment is not required. Small movements made by the patient will not affect the effectiveness of the treatment .
  • the ultrasound generator 20 will be so arranged that the active elements will sequentially receive a.n ultrasound signal. This makes it possible to simulate a treatment that involves move- ment of the ultrasound source.
  • the ultrasound generator 20 is preferably provided with adjusting means 24, by which the sequence in which the active elements receive the ultrasound signal can be selected.
  • the ultrasound generator may furthermore be provided with ad- justing means by which the intensity of the ultrasound signal for each active element can be adjusted.
  • the ultrasound generator 20 may be configured with adjusting means 25, by which the period during which each active element receives the ultrasound signal can be adjusted.
  • the ultrasound generator 20 may be accommodated in the vacuum cup 11. In that case the electric line 10 will provide the supply voltage for the ultrasound generator and the components of the active elements.

Abstract

An apparatus for treating a patient with ultrasound comprises an ultrasound generator and an ultrasound treatment head provided with an active element for converting an electric ultrasound signal from the ultrasound generator into ultrasound. The ultrasound treatment head comprises a vacuum cup, by means of which the treatment head can be fixed to a part of the patient's body that is to be treated. Said vacuum cup comprises a holding space for a gel pad. The apparatus comprises a vacuum pump that can be connected to the vacuum cup.

Description

An apparatus for treating a patient with ultrasound, as well as an ultrasound treatment head for use in said apparatus
The invention relates to an apparatus for treating a patient with ultrasound, comprising an ultrasound generator and an ultrasound treatment head provided with an active element for converting an electric ultrasound signal from the ultrasound generator into ultrasound, to an ultrasound treatment head for use in such an apparatus and to a method for placing the ultrasound treatment head on a part of the patient's body that is to be treated.
When the known apparatus is used in the treatment of a patient with ultrasound, the ultrasound treatment head is placed on the patient ' s skin at the location where the treatment is to be carried out. An acoustic coupling medium in the form of a gel is used so as to realise a good acoustic coupling and thus an adequate transfer of energy. According to the classical manner of treatment, the treatment head is continuously moved by the person in attendance so as to achieve a maximum result and prevent damage of tissue caused by an excess amount of acoustic energy. The drawback of this classical method of treatment is that the person in atten- dance in fact carries out the treatment himself and consequently must stay with the patient during the treatment .
From US patent US-B-6,599,246 an apparatus of the above kind is known in which the ultrasound treatment head is fixed to the part of the patient's body that is to be treated by means of a strap. Several active elements are arranged in the ultrasound treatment head, which elements are alternately driven, thus effecting a movement of the acoustic energy in the tissue. A drawback of said known apparatus is the fact that the ultrasound treatment head is complex and relatively costly.
As an alternative it is known to mount the ultrasound treatment head on a stand and place it into contact with the part of the patient's body to be treated. Since the treatment head is not kept in motion, the treatment must be carried out with a relatively low intensity of the ultrasound. A drawback of this known solution is that a small movement on the part of the patient may already lead to a significant decrease of the acoustic contact between the part of the body that is to be treated and the treatment head, as a result of which the effectiveness of the treatment will strongly decrease or even be reduced to zero.
The object of the invention is to provide an appa- ratus of the above kind in which one or more of the aforesaid drawbacks are obviated.
In order to achieve that object, the apparatus is according to the invention characterized in that the ultrasound treatment head comprises a vacuum cup, by means of which the treatment head can be fixed to a part of the patient 1S body that is to be treated, which vacuum cup comprises a holding space for a gel pad, with the apparatus comprising a vacuum pump that can be connected to the vacuum cup. In this way an apparatus for treating a patient with ultrasound is obtained in which the ultrasound treatment head can be fixed to the part of the patient's body that is to be treated in a relatively simple manner by using an underpressure that is generated in the vacuum cup by the vacuum pump. The person in attendance does not need to stay with the patient during the treatment. The treatment can take place with a relatively low intensity of the ultrasound, and a good acoustic contact that remains constant during the treatment is ensured as a result of the fixation of the treatment head to the part of the body that is to be treated.
The invention furthermore provides an ultrasound treatment head for the apparatus according to the invention, which ultrasound treatment head is characterized by a vacuum cup in which the active element is mounted, wherein the vaσ- uum cup comprises a holding space for a gel pad, which on the one hand provides a good acoustic coupling between the skin and the active element and which on the other hand prevents the medium used for realising the acoustic coupling from reaching the vacuum part of the apparatus or the treatment head.
Finally, the invention provides a method for placing such an ultrasound treatment head on a part of a patient's body that is to be treated, wherein according to the invention a gel pad is placed in the holding space in the vacuum cup and the vacuum cup holding the gel pad is placed on said part of the patient's body, and wherein an underpressure is generated in the vacuum cup. The invention will now be explained in more detail with reference to the drawing, which shows an embodiment of the apparatus according to the invention for treating a patient with ultrasound.
Fig. 1 is a perspective view of an embodiment of the ultrasound treatment head of the apparatus according to the invention for treating a patient with ultrasound.
Fig. 2 is a schematic cross-sectional view of the ultrasound treatment head that is shown in Fig. 1.
Fig. 3 is a schematic side view of part of the ul- trasound treatment head of Fig. 1.
Fig. 4 is a block diagram of an embodiment of the apparatus according to the invention.
Figs . 1 and 2 show an ultrasound treatment head 1 of an apparatus for treating a patient with ultrasound that is very schematically represented in Fig. 4. Said apparatus is furthermore provided with an ultrasound generator 20, which is known per se, to which the treatment head 1 can be connected. The treatment head 1 is provided with an active element 2 mounted on a carrier 3, which components are shown in side view in Fig. 3 and in cross-sectional view in Fig. 2. The carrier 3 comprises a connecting element 4 for a line 5 only partially shown in Fig. 2. The carrier 3 further comprises a mounting disc 6, to which the active element 2 is mounted by means of a screwed connection 7 in the illustrated embodiment, with an 0-ring 8 providing a seal.
The line 5 is configured as a combination of a vacuum line 9 and an electric line 10. The electric line 10 is sealingly passed through the mounting disk 6 to the active element 2. The electric line 10 provides the electrical connection between the electronic components, which are known per se, and the ultrasound crystal that form part of the active element 2. These components are not shown in the drawing.
The carrier 3 is mounted in a vacuum cup 11 together with the active element 2, which vacuum cup is made of a deformable material, such as silicone rubber. A holding space 13 for a gel pad 14 (indicated by a dashed line} is present between the active element 2 and the bottom edge 12 of the vacuum cup 11, which gel pad provides a good acoustic coupling between the active element and the part of the patient's body on which the vacuum cup 11 is placed. Such gel pads, which are known per se, comprise a chemical composition which exhibits excellent acoustic properties and which is more or less dimensionalIy stable. Said gel pads are supplied in an airtight package. When the gel pad is to be used, it is removed from the package and placed into the holding space 13. Exposure to air causes the gel pad to harden and after some time it is no longer usable. The gel pads are very suitable for use in the vacuum cup 11. The gel pad will retain its shape and the underpressure will not lead to the material of the gel pad being sucked out .
The vacuum line 9 is connected to a vacuum pump 21, which preferably forms part of the apparatus for treating the patient with ultrasound that is schematically shown in Fig. 4. To treat the patient, the person in attendance places a gel pad 14 in the holding space 13, after which the treatment head 1 can be placed at the desired location on the part of the patient's body that is to be treated. When said vacuum pump 21 is activated, an underpressure is generated in the vacuum cup 11, which underpressure ensures that the treatment head 1 is held in place on the part of the patient's body that is to be treated. The treatment head 1 sucks itself to the patient's skin, as it were.
In the embodiment of the apparatus according to the invention as described herein, the underpressure that is generated by the vacuum pump is adjustable, for example by adjusting means 22 as schematically indicated in Fig. 4. The underpressure is preferably adjustable within a range from 0 to about 500 mbar. This enables the person in attendance to adjust the underpressure in dependence on the part of the pa- tient's body and the nature thereof so as to ensure a proper fixation of the treatment head without any inconvenience to the patient. The apparatus comprises an automatic control circuit that maintains the underpressure in the vacuum cup 11 at the adjusted level. The person in attendance can adjust the intensity of the ultrasound that is generated to a desired level by adjusting means 23, in such a manner that the risk of tissue damage is excluded. Since the ultrasound treatment head 1 is fixed to the patient's skin as a result of the underpressure, the presence of the person in attendance during the treatment is not required. Small movements made by the patient will not affect the effectiveness of the treatment .
It is noted that instead of a treatment head 1 comprising one active element 2 it is also possible to use a treatment head comprising two or more active elements in the apparatus as described herein. In such an embodiment the ultrasound generator 20 will be so arranged that the active elements will sequentially receive a.n ultrasound signal. This makes it possible to simulate a treatment that involves move- ment of the ultrasound source. In that case the ultrasound generator 20 is preferably provided with adjusting means 24, by which the sequence in which the active elements receive the ultrasound signal can be selected. In this embodiment, the ultrasound generator may furthermore be provided with ad- justing means by which the intensity of the ultrasound signal for each active element can be adjusted. In addition, the ultrasound generator 20 may be configured with adjusting means 25, by which the period during which each active element receives the ultrasound signal can be adjusted. According to a further variant of the invention, the ultrasound generator 20 may be accommodated in the vacuum cup 11. In that case the electric line 10 will provide the supply voltage for the ultrasound generator and the components of the active elements.
The invention is not limited to the embodiments as described in the foregoing, which can be varied in several ways within the scope of the invention as defined in the claims .

Claims

1. An apparatus for treating a patient with ultrasound, comprising an ultrasound generator and an ultrasound treatment head provided with an active element for converting an electric ultrasound signal from the ultrasound generator into ultrasound, characterized in that the ultrasound treatment head comprises a vacuum cup, by means of which the treatment head can be fixed to a part of the patient's body- that is to be treated, which vacuum cup comprises a holding space for a gel pad, with the apparatus comprising a vacuum pump that can be connected to the vacuum cup.
2. An apparatus according to claim 1, wherein the underpressure that can be realised by the vacuum pump is adjustable within a range from 0 to about 500 mbar, wherein a control circuit is provided that automatically maintains the adjusted underpressure at the adjusted value.
3. An apparatus according to claim 1 or 2, wherein the ultrasound treatment head comprises two or more active elements, wherein the ultrasound generator is capable of supplying the electric ultrasound signal to each active element.
4. An apparatus according to claim 3, wherein the sequence in which the active elements receive the ultrasound signal as well as the intensity and/or the duration of the ultrasound signal for each active element are adjustable.
5. An apparatus according to any one of the preced- ing claims, wherein the/each element is mounted in the vacuum cup.
6. An apparatus according to any one of the preceding claims, wherein the ultrasound generator is disposed in the vacuum cup.
7. An ultrasound treatment head for an apparatus according to any one of the preceding claims, comprising at least one active element for converting an electric signal into ultrasound, characterized by a vacuum cup in which the active element is mounted, wherein the vacuum cup comprises a holding space for a gel pad.
8. An ultrasound treatment head according to claim 7, wherein each active element is mounted on a carrier, which carrier is provided with a connecting element for a vacuum line and an electric line and with a mounting disc on which the active element is sealingly mounted, wherein the connecting element projects outside the vacuum cup and the electric line is sealingly passed through the mounting disc to the active element and the vacuum line is connected to the interior space of the vacuum cup via the connecting element .
9. A method for placing an ultrasound treatment head according to claim 7 or 8 on a part of a patient's body, characterized in that a gel pad is placed in the holding space of the vacuum cup and the vacuum cup holding the gel pad is placed on said part of the body, with an underpressure being generated in the vacuum cup.
PCT/NL2006/050005 2005-01-14 2006-01-10 An apparatus for treating a patient with ultrasound, as wellas an ultrasound treatment head for use in said apparatus WO2006091093A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06700805A EP1835966A2 (en) 2005-01-14 2006-01-10 An apparatus for treating a patient with ultrasound, as wellas an ultrasound treatment head for use in said apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1028029A NL1028029C2 (en) 2005-01-14 2005-01-14 Device for treating a patient with ultrasound, as well as an ultrasound treatment head for this device.
NL1028029 2005-01-14

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WO2006091093A2 true WO2006091093A2 (en) 2006-08-31
WO2006091093A3 WO2006091093A3 (en) 2006-10-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147698A1 (en) 2008-07-23 2010-01-27 Enraf Nonius B.V. An ultrasound treatment head for an apparatus for treating a patient with ultrasound
WO2011008594A3 (en) * 2009-07-15 2011-03-31 Cardinal Health - Neurocare Ultrasound probe and method of using the same

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US6599246B1 (en) 2002-01-25 2003-07-29 Kenneth W. Coffey Apparatus and method for substantially stationary transducer therapeutic ultrasound treatment

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JP3860227B2 (en) * 1993-03-10 2006-12-20 株式会社東芝 Ultrasonic therapy device used under MRI guide
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US6626855B1 (en) * 1999-11-26 2003-09-30 Therus Corpoation Controlled high efficiency lesion formation using high intensity ultrasound
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US6599246B1 (en) 2002-01-25 2003-07-29 Kenneth W. Coffey Apparatus and method for substantially stationary transducer therapeutic ultrasound treatment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147698A1 (en) 2008-07-23 2010-01-27 Enraf Nonius B.V. An ultrasound treatment head for an apparatus for treating a patient with ultrasound
US8409100B2 (en) 2008-07-23 2013-04-02 Enraf-Nonius B.V. Ultrasound treatment head for an apparatus for treating a patient with ultrasound
EP2147698B1 (en) * 2008-07-23 2015-07-01 Enraf Nonius B.V. An ultrasound treatment head for an apparatus for treating a patient with ultrasound
WO2011008594A3 (en) * 2009-07-15 2011-03-31 Cardinal Health - Neurocare Ultrasound probe and method of using the same
EP2453801A2 (en) * 2009-07-15 2012-05-23 Carefusion 209, Inc. Ultrasound probe and method of using the same
EP2453801A4 (en) * 2009-07-15 2012-12-26 Carefusion 209 Inc Ultrasound probe and method of using the same

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NL1028029C2 (en) 2006-07-19
WO2006091093A3 (en) 2006-10-12
EP1835966A2 (en) 2007-09-26

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