WO2019197072A1

WO2019197072A1 - Shockwave generator, handpiece for a shock wave therapy device and shockwave therapy device

Info

Publication number: WO2019197072A1
Application number: PCT/EP2019/054510
Authority: WO
Inventors: Armin PETRASCHKA
Original assignee: Zimmer Medizinsysteme Gmbh
Priority date: 2018-04-12
Filing date: 2019-02-25
Publication date: 2019-10-17
Also published as: DE102018205574A1

Abstract

The present invention relates to a shockwave generator for generating mechanical shock waves, in particular for medical applications, having a drive assembly, a shock element, provided such that it can move with respect to the drive assembly, in order to generate the shock waves, and an applicator for transmitting the shock waves to an application target, wherein the applicator is accommodated in a seat and the seat is designed to be liquid-cooled. The invention further relates to a handpiece for a shock-wave therapy device having such a shock wave generator and to a corresponding shock-wave therapy device.

Description

Shock wave generator, handpiece for a shock wave therapy device and shock wave therapy device

FIELD OF THE INVENTION

The present invention relates to a shock wave generator for the generation of mechanical shock waves, in particular special for medical applications, as well as a hand

Piece for a shock wave therapy device and such shock wave therapy _V orrichtung.

TECHNICAL BACKGROUND

Shock wave generators are used for the so-called radial shock wave therapy, for example for physical or aesthetic treatment. In this case, spherical shock waves are generated, which propagate spherically or radially in egg ner treatment zone. It is an extracorporeal application in which the shock waves are generated outside the patient's body and introduced through the skin.

To generate suitable shock waves exist different Liche systems, including air-driven and elekt romagnetisch operated systems with a movable shock element. For example, DE 20 2010 009 899 Ul describes a shock wave apparatus for generating mechanical shock waves by means of an electromagnetic Antriebsanord voltage. This has at least one acceleration magnet and at least one Rückholmmagneten, between which a shock element is movable. The acceleration magnet is configured to drive the impact element in a first direction towards an applicator in which a pulse of the impact element is transmitted upon impact. By means of the applicator, a shock wave is to be introduced in this way. acting target initiated. The return beam magnet is configured to move the push member back in a second direction away from the applicator so that re-acceleration is enabled.

Sometimes a maximum Thera is limited piezzeit in such systems, since the shock wave apparatus heats up during operation.

SUMMARY OF THE INVENTION

Against this background, the present invention has the object to admit an improved shock wave generator.

According to the invention this object is achieved by a Stoßwellenge generator with the features of claim 1 and / or by a handpiece for a shock wave therapy device with the features of claim 8 and / or a corresponding shock wave therapy device with the Merkma len of claim 15.

Accordingly, it is provided:

- A shock wave generator for generating mechanical shock waves, in particular for medical applications, with a drive assembly, with a respect to the Antriebsan orderly provided shock element for generating the shock waves, and an applicator for transmitting the shock waves to an application target, wherein the applicator in a seat taken and the seat is liquid cooled ausgebil det.

Handpiece for a shock wave therapy device, comprising: a handheld housing; a housing in the housing NEN shock wave generator according to the invention; and a cooling liquid connection for supplying the shock wave generator sector with cooling liquid.

A shock wave therapy device, comprising: a handpiece according to the invention; and a coolant circuit which is coupled to the coolant port.

The finding underlying the present invention is that the high temperatures in and on an application part of a shock wave therapy device, in particular a special handpiece, mainly due to losses in impact generation between a shock element and egg nem applicator arise.

The idea underlying the present invention is now to provide the seat of the applicator, in which the momentum transfer of the impact element takes place, specifically with liquid cooling. Thus, according to the invention, heat is thus dissipated directly at its main source, thereby realizing effective and efficient cooling of the application part. In this way, a possible operating or treatment time significantly he increased and also reduces the wear.

An inventive handpiece for a shock wave therapy device in which the invention Stoßwellengene is integrated, accordingly has a Kühlflüs sigkeitsanschluss to supply the seat with coolant on speed.

In a shockwave therapy device according to the invention, accordingly, a cooling circuit is provided which feeds the coolant connection. A Flüssigkeitssküh development can, for example by means of a hose system of a main unit or stand part of Stoßwellentherapievor direction to the application part or handpiece to be transported.

Advantageous embodiments and further developments will become apparent from the other dependent claims and from the description Be with reference to the figures of the drawing.

According to an advantageous embodiment, the seat and the drive assembly are taken in a common carrier shell. In this way, a common structure of the shock wave generator is formed. In one embodiment, elements of the liquid keitskühlung, in particular a cooling chamber and an inlet and outlet are arranged within the carrier shell. Furthermore, preferably suitable log lines between the seat and the carrier shell are provided.

According to one embodiment, the seat has a cooling chamber, which forms out with a cooling liquid can flow. The cooling chamber may be formed in or on the seat, for example in the form of a channel or a Ausneh determination. The basic shape of the seat needs to be modified only slightly compared to an uncooled version. Thus, the liquid can be realized in the application part of a shock wave therapy device, in particular a handpiece, with very small space and only ge ringer change of the mechanical structure.

According to an advantageous embodiment, the cooling chamber is formed limited by a recess of the seat and an inner surface of the carrier shell. In particular, the cooling chamber is formed around the seat circumferentially. In this way, a particularly simple realization of the cooling chamber be made available. For axial sealing of the cooling chamber above and below the recess can each have a seal between see the seat and the carrier shell be provided, for example in the form of an O-ring.

According to a preferred embodiment, an inlet and a drain for supplying the cooling chamber with cooling liquid are integrated into the carrier shell. Of course, it would also be conceivable to integrate only one inlet or one expiration in the carrier shell. For example, the carrier shell for the realization of the integral training be formed as a hollow cylinder. In particular, the inlet and the outlet can be integrated into a double-walled design of the carrier sleeve. Advantageously need in this way no additional lines or hoses along the drive assembly within an application part, in particular handpiece to be performed, which optimizes the space op and simplifies installation. Furthermore, the drive arrangement can be cooled by the outside along it along cooling liquid. In this way, electrical resistances in the drive arrangement are reduced.

According to a preferred embodiment, the drain has a larger cross-section than the inlet. In particular, in a double-walled construction of the carrier sleeve, a space between the carrier sleeve can be divided in such a way that the drain has a larger cross-section than the inlet. In example, the process over a majority of the circumference, in particular greater than two-thirds of the circumference, preferably greater than three-quarters of the circumference, more preferably greater than nine-tenths of the circumference, he stretch. The inlet extends correspondingly over a smaller remaining part of the circumference.

According to an advantageous development, the inlet and the outlet extend at least in sections parallel to the push element. Preferably, they run from the seat along the drive assembly. In this way, additionally heat can be dissipated from the drive assembly, wel che arises during acceleration of the shock element by friction or electrical resistance. The drive arrangement is therefore effectively cooled by the liquid cooling, which advantageously reduces friction coefficients, electrical resistances and thus ultimately energy consumption and wear. This is especially advantageous in an electromagnetic Ausfüh tion of the drive assembly, which otherwise unlike, for example, an electropneumatic design is not flowed through with Flu iden in a synergistic manner.

Accordingly, in a particularly advantageous embodiment, the drive arrangement is in the form of an electromagnetic drive arrangement, in particular with a magnetic push element, an acceleration magnet and a return beam magnet.

In an advantageous embodiment of a handpiece, the housing has an upper part, in which the Kühlflüs sigkeitsanschluss is arranged. Further, the housing has a lower part, in which the shock wave generator is arranged. In this way, on the one hand, the treatment is not disturbed by connections in the area of the applicator. On the other hand, the guidance of the inlet and outlet through the carrier sleeve is advantageous in this way. The Kühlflüs sigkeitsanschluss preferably has a flow and a return channel and is coupled to the inlet and the outlet of the carrier sleeve.

According to an advantageous embodiment, an applicator head is provided on the lower part, in which the Applika gate arranged and which is ausgebil det for shock wave therapy. For this purpose, in particular a suitable storage or Guide the applicator, for example in a flexible cuff, be provided on the applicator head. In this way, a shock wave therapy can be made over the skin of a patient or the shock waves can be introduced through the skin.

According to an advantageous development, the Appli katorkopf on a surrounding the applicator silencer element. This can be formed, for example, as a sleeve-like manner around a treatment zone circumferential flexible cover. In this way, the noise level in the treat- ment is lowered, thus improving the comfort of treatment.

According to a preferred embodiment, the cooling liquid keitsanschluss is designed with a common integrated inlet and outlet. Thus, the number of individual connections is re duced and the handling of the handpiece improved.

According to a particularly advantageous embodiment, the cooling liquid connection is designed as a hybrid connection, which in addition to the supply of cooling fluid also enables a power supply and / or signal connection for operating the drive arrangement. In particular, the hand piece thus has only a single connection in the form of the hybrid connection, via which all supply and connection can be made. This considerably simplifies the handling and also ensures an appealing external design of the handpiece.

According to one embodiment, the shockwave generator is designed with an electromagnetic drive arrangement and the hybrid connection has an electrical energy supply. Here, the liquid cooling according to the invention particularly advantageously provides a fluidic cooling of the Schlaggenerierungsverluste receiving seat and, if necessary, also the drive assembly ready.

It would also be conceivable to provide an electrohydraulically designed drive device. In this case, it would be a pneumatic power supply integrated into the hybrid connector.

The above embodiments and developments can, if appropriate, combine with each other as desired. In particular, all embodiments of a shock wave generator are generally transferable to an application part of a shock wave therapy device as well as to an inventive handpiece for a shock wave therapy device. Other possible embodiments, developments and implementations of the invention also include not explicitly mentioned combinations of previously or subsequently described with respect to the embodiments features of inven tion. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

CONTENT OF THE DRAWING

The present invention will be explained in more detail with reference to the execution examples given in the schematic figures of the drawing. It shows:

Fig. 1 is a longitudinal sectional view of a shock wave generator sector;

Fig. 2 is a more detailed longitudinal sectional view of the shock wave generator of Fig. 1; Fig. 3 is a partial perspective sectional view of a shock wave generator in the region of an inlet for cooling medium supply;

Fig. 4 is a perspective cross-sectional view of a

Carrier sleeve in the region of an inlet;

Fig. 5 is a perspective cross-sectional view of a

Carrier sleeve in the region of a drain;

Fig. 6 is a perspective cross-sectional view of a

Cooling chamber;

Fig. 7 is a perspective view of a handpiece;

Fig. 8 is a longitudinal sectional view of the handpiece according to

Fig. 7; and

9 is a schematic block diagram of a shockwave therapy device.

The accompanying figures of the drawing are intended to convey a further understanding of the embodiments of the invention. They illustrate embodiments and serve in conjunction with the description of the principles and concepts of the invention. Other embodiments and many of the stated advantages will become apparent with reference to the drawings. The elements of the drawings are not necessarily shown to scale to each other.

In the figures of the drawing are the same, functionally identical and same-acting elements, features and components - unless otherwise stated - each provided with the same reference numerals. DESCRIPTION OF EMBODIMENTS

Fig. 1 shows a longitudinal sectional view of a shock wave generator rators first

The shock wave generator 1 is used to generate mechanical shock waves for medical applications, in particular for extracorporeal radial shock wave therapy.

To generate shock waves, the shock wave generator 1, a drive assembly 2 for accelerating a Stoßele element 3, which is exemplified here as an electromagnetic drive assembly 2. Further, the bezüg Lich the drive assembly 2 movable shock element 3 for generating the shock waves by impulse transmission to an applicator 4 is provided.

The applicator 4 is arranged at a lower end of the Antriebsan Regulation 2 for the transmission of shock waves to an application. By impact on the applicator 4, a pulse in the shock element 3 is transferable, which can then be transmitted in the form of a shock wave to the application target. For this purpose, the applicator 4 is received in a seat 5 of the Stoßwel lengenerators 1 and axially movable gela siege it.

In the transmission of shocks or pulses occur friction losses, so that the applicator and the seat 5 he warm. To dissipate the heat during operation of the shock wave generator 1, the seat 5 according to the invention is formed liquid-cooled, which will be explained in more detail with reference to Figure 2.

FIG. 2 now shows a more detailed longitudinal sectional view of the shockwave generator according to FIG. 1. The electromagnetic drive assembly 2 has a substantially cylindrical shape in We and includes a accel nigungsmagneten 11 and a Rückholmmagneten 12. About the acceleration magnet 11 can be the strength of the acceleration Be and thus the shock waves to be created.

The acceleration magnet 11 and the return beam magnet 12 are each formed in this embodiment as a cylindrical coil, which are wound on a common bobbin 13. To isolate the coils from each other, a central flange is provided on the bobbin 13. Furthermore, the bobbin 13 is formed here in one piece with the seat 5 or passes into this.

The acceleration magnet 11 and the Rückholmagnet 12 are supplied via an electrical connection 17 as needed with electrical energy. By means of the acceleration magnet 11, the impact element 3 is accelerated in a first axial direction 6 towards the applicator 4 (not shown in FIG. 2 for clarity). When the impact element 3 encounters an inner end of the applicator 4 laterally guided on the seat, the momentum of the impact element 3 is transmitted to the applicator 4.

The shock element 3 is in a circular recess ge outsourced, which extends through the acceleration magnet 4 and the Rückholmmagneten 5. In the illustrated imple mentation form is a cylindrical axi al extending through hole of the bobbin. The push member 3 is slidably mounted therein, preferably with a clearance fit. In addition, not dargestell te plain bearing bushes can be provided for friction reduction here The seat 5 and the drive assembly 2 are received in a common seed double-walled carrier sleeve 6. The seat 5 has a cooling chamber 7 formed with a recess 8, which is closed at its radially outer side by the inner surface of the carrier sleeve 6 and formed with a cooling liquid through-flow. Accordingly, in each case axially on both sides next to the recess 8 lines 14 are provided which are formed here by way of example with O-rings.

An inlet 9 and a drain 10 for supplying the cooling chamber 7 with cooling liquid are integrated into the double-walled construction of the carrier sleeve 6. In this way, the inlet 9 and the outlet 10 extend parallel to the impact element 3 in the axial direction. The double-walled Ausbil tion of the support sleeve 6 has to an inner sleeve 15 and ei ne outer sleeve 19, between which a gap is seen before.

The inner sleeve 15 is provided at a side facing away from the seat 5 end of the carrier sleeve 6 with connection holes 16 which are coupled to the inlet 9 and the outlet 10. In this connection bores 16 connecting sleeves for connecting a flow and a return hose are provided here by way of example. Of course, in other Ausfüh tion forms but other types of connections, for example, suitable pipe fittings or the like may be provided.

Fig. 3 shows a perspective partial sectional view of a shock wave generator 1 in the region of an inlet 9 for cooling medium supply. The inlet 9 extends from the connection bore 16 of the inner sleeve 15 axially along the support sleeve 6 to the cooling chamber. 7

4 shows a perspective cross-sectional view of the carrier sleeve 6 in the region of an inlet 9.

For circumferential limitation of the inlet 9 axially duri Fende webs 18 are provided between the inner sleeve 15 and the outer sleeve 19, which are formed here by way of example with the inner sleeve. Thus, over a comparatively small part of the circumference of the support sleeve 6, here example, over an angle of about 30 °, extending Zulaufka channel is formed.

5 shows a perspective cross-sectional view egg ner carrier sleeve in the region of a flow 10th

The drain 10 also extends between the webs 18 over the remaining circumference of the support sleeve 6 and thus occupies the major part of the circumference, here for example over about 330 °, a.

Fig. 6 shows a perspective cross-sectional view ei ner cooling chamber. 7

The cooling chamber 7 is formed by a recess 8 of the seat 5 and extends in the region of the recess 8 between tween the seat 5 and the support sleeve 6. the recess 8 is uniformly circumferentially formed and tapered at its axial edge. It is fed via the not presented here Darge inlet 9 with coolant and directs them evenly in the flow 10, preferably over the entire circumference shown in Fig. 5. Fig. 7 shows a perspective view of a hand piece 20 for a shock wave therapy device 30th

The handpiece 20 has a hand-held housing 21 and egg nen recorded in the housing 21 shock wave generator 1, as described with reference to Figures 1 to 6. To supply the shock wave generator 1 with Kühlflüs fluid, a cooling liquid connection 22 is provided on the housing 21.

The housing 21 is formed with an upper part 23 and a lower part 24, which are connected via fastening means. On the upper part 23 of the Kühlflüssigkeitsan circuit 22 is arranged, while the shock wave generator 1 is disposed in within the housing 21 in the lower part 24. On the lower part 24, an applicator head 25 is also seen easily, in which the applicator 4 of the shock wave generator 1 is arranged and which forms out for shock wave therapy.

The dimensions of the housing 21, in particular the design of the lower part 24 are formed for one-handed handling from. In particular, the outer surface of the lower part 24 is formed as a handle, so that the handpiece 20 for shock wave therapy is one-handed operation.

In particular, the applicator head 25 is suitable for use on a body surface of a patient to be treated by means of radial shockwave therapy. Preferably, a contact gel is used for impedance matching between the applicator and a skin of the patient.

FIG. 8 shows a longitudinal section of the handpiece according to FIG. 7th The applicator 4 is accommodated in a skin contact flexible sleeve 29 of the applicator head 25. Furthermore, the applicator 4 is movably mounted in the applicator head 25. The applicator 4 is constructed in several parts in the dargestell th embodiment. He has a neren firing pin 38 for impulse transmission and a dele gation element 39 with an outer spherical transmission surface for the transmission of shock waves. Further, a bearing sleeve 39 is provided for the movable mounting of the applicator 4 in the flexible sleeve 29. An impulse generated with the element 3 Stoßele pulse can be delivered to the radial Stoßwellenthe therapy via the applicator 4 in the form of a spherical or radially propagating shock wave to an application target.

In order to reduce the noise level, the applicator head 25 also has a silencer element 26 surrounding the applicator 4. For example, it may be a flexible peripheral wall that surrounds the applicator and an application target or a treatment zone. In particular, the wall contains a ge for sound deadening suitable elastomeric material.

The silencer element is preferably supported circumferentially on the skin of the patient with one end face and thus shields the sound emitted by the shock waves to the outside.

The coolant connection 22 on the upper part 23 of the housing is designed as a hybrid connection. He has accordingly speaking in addition to the supply of cooling fluid and a power supply for the electrical connection 17 of the

Shock wave generator 1 on. For this purpose, each appropriate Kon clocks 28 are provided in the hybrid connection. The cooling liquid connection 22 is further provided with a common integrated supply. run and drain trained, which each have a running in the upper part of the housing, here for clarity about clarity not shown inlet and outlet hose to the provided in the connection holes 16 spouts are being introduced.

9 shows a schematic block diagram of a shock wave therapy device 30.

The shock wave therapy device 30 has a handpiece 20 according to FIGS. 7 and 8 as well as a cooling liquid circuit 22 coupled to the cooling liquid circuit 31 and a control device 34.

The cooling liquid circuit 31 supplies, by means of a pump 33, coolant cooled to the cooling liquid connection 22. Returned coolant is passed into a heat exchanger 32 ge and cooled again.

The control device 34 is coupled to the drive assembly 2 via a connecting line for operating the Antriebsanord voltage 2 and has, for example, a driver scarf device 35, a PWM unit 36 and a time controller 37, whose control, for example, in DE 20 2010 009 899 Ul in detail is explained. Of course, the control device 34 can also be realized in other suitable ways.

The control device 34 is preferably ausgebil det such that by means of the control device 34 both the energy with which the shock element 3 hits the applicator 4, as well as the frequency with which the shock waves he testifies, can be set and controlled exactly , The control device 34 may be formed together with the pump 33 and the heat exchanger 32 in a spatially separate from the handpiece 20 housing the shock wave therapy device 30, for example, a main part of the Stoßwel lentherapievorrichtung 30. The connections and lines, in particular a supply line, a drain line, a power supply line and a (signal) connection line, are in a common

Bundled hose and bundle and connected via the Hybridan connection together to the handpiece 20.

Alternatively and preferably, the control device 34 may also be formed integrated in the handpiece 20, as shown in Fig. 8. In this case, the control device 34 is formed as shown in FIG. 8 by way of example between the thinning out as a hybrid connection th cooling fluid port 22 and the drive assembly 2 in the form of an integrated only schematically in the housing 21 board. In this case, an external electrical Energieversor supply via the hybrid connection is preferably also provided before.

Although the present invention has been fully described above with reference to preferred embodiments, it is not limited thereto but can be modified in a variety of manners.

In particular, a provided with the shock wave generator according to the invention application part also have a different shape than the handpiece described. Strict wave generator

drive arrangement

impact element

applicator

Seat

carrier case

cooling chamber

recess

Intake

procedure

acceleration magnet

Rückholmagnet

bobbins

poetry

inner sleeve

connection bore

electrical connection

web

outer sleeve

handpiece

casing

Coolant connection

top

lower part

applicator

silencer element

electrical power supply contacts

flexible cuff

Shock wave therapy device Cooling fluid circuit

heat exchangers pump

Control device driver circuit PWM unit

Time control device firing pin

Transmission element bearing sleeve

Claims

Shock wave generator (1) for generating mechanical shock waves, in particular for medical applications, with a drive arrangement (2), with respect to the drive assembly (2) movably before seen shock element (3) for generating the shock waves, and an applicator (4) for transmitting the shock waves to an application target, wherein the applicator (4) received in a seat (5) and the seat (5) is formed liquid-cooled.

2. Shock wave generator according to claim 1,

characterized ,

in that the seat (5) and the drive arrangement (2) are accommodated in a common carrier sleeve (6).

3. Shock wave generator according to claim 1 or 2,

characterized ,

in that the seat (5) has a cooling chamber (7) which can be flowed through by a cooling liquid.

4. Shock wave generator according to claim 2 and 3,

characterized ,

that the cooling chamber (7) through a recess (8) of the seat (5) and an inner surface of the carrier shell (6) is limited forms.

5. Shock wave generator according to claim 4,

characterized ,

that an inlet (9) and / or a drain (10) for supplying the cooling chamber (7) with cooling liquid in the carrier shell (6), in particular in a double-walled training of Trä gerhülle, is provided integrated.

6. Shock wave generator according to claim 5,

characterized ,

in that the inlet (9) and / or the outlet (10) run parallel to the impact element (3) at least from sectionwise.

7. Shock wave generator according to one of the preceding and work,

characterized ,

in that the drive arrangement (2) is designed as an electromagnetic drive arrangement.

8. A handpiece (20) for a shock wave therapy device, comprising: a handheld housing (21); a shock wave generator (1) received in the housing (21) according to one of the preceding claims; and a coolant connection (22) for supplying the shock wave generator (1) with coolant.

9. Handpiece according to claim 8,

characterized ,

in that the housing (21) has an upper part (23) in which the coolant connection (22) is arranged and a lower part (24) in which the shock wave generator (1) is arranged.

10. Handpiece according to claim 9,

characterized , that on the lower part (24) an applicator head (25) is vorgese hen, in which the applicator (4) arranged and wel cher is formed for shock wave therapy.

11. Handpiece according to claim 10,

characterized ,

the applicator head (25) has an applicator (4) surrounded by the silencer element (26).

12. Handpiece according to one of claims 8 to 11,

characterized ,

that the coolant connection (22) is formed with a common inte grated inlet and outlet.

13. Handpiece according to one of claims 8 to 12,

characterized ,

in that the cooling liquid connection (22) is designed as a hybrid connection which, in addition to the supply of cooling liquid, also makes possible a power supply and / or signal connection for the operation of the drive arrangement (2).

14. Handpiece according to claim 13,

characterized ,

that the shock wave generator (1) according to claim 7 is ausgebil det and the hybrid connection has an electrical Energiever supply (27).

15. A shock wave therapy device (30), comprising: a handpiece (20) according to any one of claims 8 to 14; and a cooling liquid circuit (31) which is coupled to the cooling liquid connection (22).