CN102397085B

CN102397085B - Ultrasound probe

Info

Publication number: CN102397085B
Application number: CN201110266074.6A
Authority: CN
Inventors: D·G·奥克斯; C·J·桑德斯
Original assignee: Toshiba Corp; Toshiba Medical Systems Corp
Current assignee: Canon Medical Systems Corp
Priority date: 2010-09-09
Filing date: 2011-09-09
Publication date: 2015-04-08
Anticipated expiration: 2031-09-09
Also published as: CN102397085A

Abstract

The invention provides an ultrasound probe, which can make heat generated from a heat source cooled with high efficiency. The ultrasound probe comprises a heat generating source, an outer wall and an inner wall. The heat generating source generates heat. The outer wall is equipped on the periphery of the heat generating source. The inner wall is equipped between the outer wall and the heat generating source. A heat conducting medium for transmitting heat generating by the heat generating source is equipped in a flow space enclosed by the outer wall and inner wall.

Description

Ultrasound probe

(cross reference of related application)

The application is based on the U.S. Patent application No.12/878 also required formerly, 576 (JIUYUE was submitted on the 9th in 2010) and Japanese patent application No.2011-177906 (on August 16th, 2011 submits) are priority, and its full content is hereby incorporated by reference.

Technical field

Present embodiment relates to ultrasound probe.

Background technology

Figure 32 is the figure of the formation of the diagnostic ultrasound equipment illustrated according to conventional example.Shown in Figure 32, the diagnostic ultrasound equipment according to conventional example has: handling part 1, display part 2, cable 3 and ultrasound probe 4.Ultrasound probe 4 is connected to handling part 1 via cable 3.Handling part 1 controls ultrasound probe 4, to send ultrasonic pulse to the region-of-interest in detected body and to receive the ultrasonic echo reflected by detected body.Handling part 1 receives ultrasonic echo in real time, so as to carry out the ultrasonography relevant with region-of-interest be shown on display part 2 and so on post processing.

In more detail, ultrasound probe 4 has predetermined multiple oscillators.Multiple oscillator is distinguished into the channel for sending ultrasonic pulse and is used for receiving the channel of ultrasonic echo.When collecting two-dimentional photographed data, channel number is set to the number of the scope of 64 ~ 256 usually.When collecting three-dimensional photographed data, channel number requires usually more than 1000.In order to carry out captured in real-time, ultrasound probe 4 will receive and keep a large amount of electronic units of the electronic circuit and other element etc. of the transmitting-receiving for controlling ultrasonic pulse.

Above-mentioned electronic unit can produce unwanted heat in ultrasound probe.Due to the framework of unwanted heat to ultrasound probe, the surface conductive of sound conformable layer lens, so when diagnostic ultrasound equipment works, the surface of ultrasound probe can reach inappropriate, sometimes even harmful temperature.Such as, sometimes ultrasound investigation technician hand-held during ultrasound probe, unwanted heat can make the hands of ultrasound investigation technician perspire or scald.Therefore, not only can comfortableness in reduction work and safety, also can cause harmful effect because of framework slippery surface to degree of accuracy.Unwanted heat also can cause harmful effect via the contact surface contacted with detected body body surface on lens surface or other ultrasound probe surface etc. to detected body.When unwanted heat reaches predetermined temperature, the contact surface of ultrasound probe can injure body surface because of heating.

Have developed the technology of the temperature controlling ultrasound probe by various means.But which kind of technology also all can not get desired efficiency, do not reach the level of installation.

< patent documentation 1> Japanese Unexamined Patent Publication 2001-353147 publication

< patent documentation 2> Japanese Unexamined Patent Publication 10-127632 publication

Summary of the invention

(inventing the problem that will solve)

The object of the present invention is to provide the ultrasound probe that the heat produced from thermal source can be made to cool efficiently.

(scheme of dealing with problems)

Ultrasound probe according to the present embodiment, is characterized in that comprising: the delivery in hot weather source of students producing heat; The outer wall arranged around above-mentioned delivery in hot weather source of students; And the inwall arranged between above-mentioned outer wall and above-mentioned delivery in hot weather source of students, in the flowing space surrounded by above-mentioned outer wall and above-mentioned inwall, receive and keep the heat-conduction medium being used for conducting the heat produced from above-mentioned delivery in hot weather source of students.

(effect of invention)

The ultrasound probe that the heat produced from thermal source can be made to cool efficiently can be provided.

Accompanying drawing explanation

Figure 1A is the side view of the ultrasound probe according to embodiment 1.

Figure 1B is the top view of the ultrasound probe according to embodiment 1.

Fig. 2 A is the X-X profile of Figure 1A.

Fig. 2 B is the W-W profile of Figure 1B.

Fig. 3 is the V-V profile of Figure 1A.

Fig. 4 A is the amplification profile of the subregion Z of Fig. 2 A.

Fig. 4 B is the amplification profile of the subregion A of Fig. 2 B.

Fig. 5 is the AE-AE profile of Figure 1A or Fig. 4 A.

Fig. 6 A is the side view of the ultrasound probe according to embodiment 2.

Fig. 6 B is the top view of the ultrasound probe according to embodiment 2.

Fig. 7 A is the E-E profile of Fig. 6 A.

Fig. 7 B is the F-F profile of Fig. 6 B.

Fig. 8 is the L-L profile of Fig. 6 A.

Fig. 9 A is the amplification profile of the subregion J of Fig. 7 A.

Fig. 9 B is the amplification profile of the subregion K of Fig. 7 B.

Figure 10 is the H-H profile of Fig. 6 A or Fig. 9 A.

Figure 11 A is the side view of the ultrasound probe according to embodiment 3.

Figure 11 B is the top view of the ultrasound probe according to embodiment 3.

Figure 12 A is the B-B profile of Figure 11 A.

Figure 12 B is the A-A profile of Figure 11 B.

Figure 13 is the K-K profile of Figure 11 A.

Figure 14 A is the amplification profile of the subregion J of Figure 12 A.

Figure 14 B is the amplification profile of the subregion M of Figure 12 B.

Figure 15 is the D-D profile of Figure 11 A or Figure 14 A.

Figure 16 is the side view of the ultrasound probe according to embodiment 4.

Figure 17 is the amplification stereogram of the probe cable of the ultrasound probe shown in Figure 16.

Figure 18 is the figure of the front face of the ultrasound probe illustrated according to embodiment 4.

Figure 19 is the N-N profile of Figure 18.

Figure 20 is the amplification profile of the subregion Q of Figure 19.

Figure 21 is the N-N profile of Figure 18.

Figure 22 is the amplification profile of the subregion T of Figure 21.

Figure 23 is the side view of the ultrasound probe according to embodiment 5.

Figure 24 is the C-C profile of Figure 23.

Figure 25 is the amplification profile of the subregion E of Figure 24.

Figure 26 is the G-G profile of Figure 23.

Figure 27 is the amplification profile of the subregion J of Figure 26.

Figure 28 is the axonometric chart of the ultrasound probe according to embodiment 6.

Figure 29 is the front view of the ultrasound probe according to embodiment 6.

Figure 30 is the F-F profile of Figure 29.

Figure 31 is the B-B profile of Figure 29.

Figure 32 is the figure of the formation of the diagnostic ultrasound equipment illustrated according to conventional example.

(description of reference numerals)

10: coaxial cable; 30: outer wall; 40: inwall; 50: medium flow space; 50A: space, suction side; 60A: discharge side space; 70: suction inlet; 80: outlet; 92: electronic component unit; 94: flexible cable; 100: ultrasound probe; 101: framework; 110: probe cable; 120: layered transducer elements

Detailed description of the invention

Ultrasound probe according to the present embodiment, comprising: delivery in hot weather source of students, outer wall and inwall.Delivery in hot weather source of students produces heat.Outer wall is arranged on around delivery in hot weather source of students.Inwall is arranged between outer wall and delivery in hot weather source of students.In the flowing space surrounded by outer wall and inwall, harvesting has the heat-conduction medium of the heat produced from delivery in hot weather source of students for conduction.

Below, with reference to accompanying drawing explanation ultrasound probe according to the present embodiment.

Diagnostic ultrasound equipment according to the present embodiment, has ultrasound probe, handling part and cable.Ultrasound probe is connected with handling part by cable.Ultrasound probe according to the present embodiment, produces ultrasonic pulse, sends ultrasonic pulse to certain region in detected body.Then, ultrasound probe according to the present embodiment receives the ultrasonic echo from detected body reflection, to obtain the internal image of detected body.Ultrasound probe according to the present embodiment has portable size.But ultrasound probe is according to the present embodiment not limited in this, also portable size can not be had.In addition, usually, ultrasound probe according to the present embodiment has cooling structure, cooling covering.In order to the heat produced from the oscillator in ultrasound probe, electronic unit is cooled efficiently, the framework of cooling structure, cooling covering and ultrasound probe forms.

(embodiment 1)

Figure 1A is the side view of the ultrasound probe 100 according to embodiment 1.Ultrasound probe 100 has framework 101.Probe cable 110 is installed in one end of framework 101, is configured with the layered transducer elements 120 be made up of multiple oscillator at the other end.Probe cable 110 is connected with the handling part of diagnostic ultrasound equipment, to receive and dispatch electric signal via coaxial cable 10 between the handling part and ultrasound probe 100 of diagnostic ultrasound equipment.Framework 101 provides the Handheld Division for hand-held ultrasound probe 100 to operator, to the layered transducer elements 120 of area configurations ultrasound probe 100 desired by detected body.Erect image with reference to other profile can see such, the major part of framework 101 by the covering outside ultrasound probe 100 and outer wall 30 institute coated.Although ultrasound probe 100 is illustrative as the pocket device be connected with diagnostic ultrasound equipment cable, present embodiment is not limited in this, also can be non-pocket device.

Fig. 2 A is the X-X profile of Figure 1A, is the major axis profile of ultrasound probe 100.Shown in Fig. 2 A, the coaxial cable 10 that framework 101 is received and kept electronic component unit 92 and is connected with electronic component unit 92.Electronic component unit 92 has the multiple electronic circuits utilized by ultrasound probe 100.Electronic circuit is made up of the electronic unit of such as element, circuit etc.Such as, electronic component unit 92 comprises: be used for from layered transducer elements 120 send ultrasonic pulse transtation mission circuit, process the reception with ultrasonic echo with cause layered transducer elements 120 and the receiving circuit of electric signal that produces.Coaxial cable 10 is arranged on the inside of probe cable 110.Flexible cable 94 is connected to layered transducer elements 120 electronic component unit 92.As described above, the major part of framework 101 is coated by the outer wall 30 of ultrasound probe 100 institute.The covering in outside or outer wall 30 are from putting the extended lateral parts to probe cable 110 near layered transducer elements 120.The covering of inner side and inwall 40 are configured in the inner side of outer wall 30, are arranged between outer wall 30 and electronic component unit 92.Inwall 40 is along major axis from putting the extended lateral parts to probe cable 110 near layered transducer elements 120.

Inwall 40 and outer wall 30 jointly form cavity and medium flow space 50.That is, the space surrounded by inwall 40 and outer wall 30 forms medium flow space 50.Medium flow space 50 is arranged along the housing of framework 101.The material (hereinafter referred to as heat-transfer fluid) of the solid, gas, liquid etc. of the heat produced from electronic component unit 92, layered transducer elements 120 for conduction is filled with in medium flow space 50.In order to conduction of heat, at random use the phase transformation of heat-transfer fluid.Usually, the heat produced from electronic component unit 92, layered transducer elements 120 is transmitted to outer wall 30 via inwall 40.Inwall 40 is formed by the material with at least high than outer wall 30 thermal conduction characteristic, to make thermal capacitance easily not conduct to the outer surface of outer wall 30 to heat-transfer fluid conduction.Such as, inwall 40 is formed by plastics, aluminum, carbon/aluminum, copper, graphite or other known heat-conducting substance, also can be formed by their combination in any.Medium flow space 50 is extended along the major axis of ultrasound probe 100, receives and keeps above-mentioned heat-transfer fluid.Therefore, from the major part of the heat of electronic component unit 92, layered transducer elements 120, absorbed by heat-transfer fluid before arrival outer wall 30.Such as, heat-transfer fluid moves to discharge side space 60A from suction inlet 70 via space, suction side 50A, uni-directionally moves to outlet 80.In addition, the flow direction of above-mentioned heat-transfer fluid also can be different direction.

Figure 1B is the top view of the ultrasound probe 100 according to embodiment 1.Figure 1B is figure Figure 1A 90-degree rotation obtained around major axis.In addition, " above " and " side " is the term representing relative position relation, the direction of the ultrasound probe 100 when being not meant to be use.Probe cable 110 has coaxial cable 10, suction inlet 70A and outlet 80A.Both the suction inlet 70A and outlet 80A of at least one pair of tubulose is provided with between the outer side covers thing and coaxial cable 10 of probe cable 110.Framework 101 receives and keeps electronic component unit.

Fig. 2 B is the W-W profile of Figure 1B, is the major axis profile of the ultrasound probe 100 according to embodiment 1.Shown in Fig. 2 B, framework 101 receives and keeps electronic component unit 92 and coaxial cable 10.Coaxial cable 10 is connected with electronic component unit 92.Flexible cable 94 is connected to layered transducer elements 120 electronic component unit 92.The not shown partition wall of Fig. 2 B 90A and 90B inwall 40 and outer wall 30 separated.But as having illustrated in fig. 2, the major part of framework 101 is coated by outer wall 30 institute, and outer wall 30 is from putting the extended lateral parts to probe cable 110 near layered transducer elements 120.As described above, inwall 40 is configured in the inner side of outer wall 30, is arranged between electronic component unit 92 and outer wall 30.Inwall 40 is also from putting the extended lateral parts to probe cable 110 near layered transducer elements 120.Partition wall 90A and 90B is being formed between outer wall 30 and inwall 40 along in the W-W section of major axis.

Partition wall 90A with 90B is connected with inwall 40 and outer wall 30 respectively.Partition wall 90A and 90B is divided at least two parts medium flow space 50 respectively.Partition wall 90A and 90B is along major axis from putting the extended lateral parts to probe cable 110 near layered transducer elements 120.About this structure, further illustrate in Fig. 4 A and Fig. 4 B.Because medium flow space 50 is extended along the major axis of ultrasound probe 100, so each medium flow space 50 after segmentation is also extended along major axis.Below, in the medium flow space 50 after segmentation is called space, suction side 50A, and another is called discharge side space 60A.Such as, heat-transfer fluid flows to discharge side space 60A from space, suction side 50A.Like this, by making heat-transfer fluid along the peripheral circulation of framework 101, the heat cooling that can will produce from layered transducer elements 120, electronic component unit 92.

Fig. 3 is the V-V profile of Figure 1A, shows the drawing in side sectional elevation of the ultrasound probe 100 of partition wall 90A and 90B.Both outer wall 30 and inwall 40 surround the electronic component unit 92 in the generation source as heat.Partition wall 90A and 90B is located between outer wall 30 and inwall 40 respectively, is connected with both outer wall 30 and inwall 40.Like this, partition wall 90A and 90B is divided into space, suction side 50A and discharge side space 60A medium flow space 50.

Fig. 4 A is the amplification profile of the subregion Z of Fig. 2 A, is the figure of the details that medium flow space 50 is shown.Shown in the Z of subregion, inwall 40 and outer wall 30 jointly form medium flow space 50, are arranged to cross electronic component unit 92 from the side of coaxial cable 10, connect with the side of layered transducer elements 120.Cover before layered transducer elements 120 on sound lens 130.In addition, layered transducer elements 120 be below connected to electronic component unit 92 via flexible cable 94.

Fig. 4 B is the amplification profile of the subregion A of Fig. 2 B, is the figure of the details that partition wall 90A and 90B is shown.Fig. 4 B is orthogonal with Fig. 4 A.Therefore, in figure 4b, partition wall 90A and 90B is divided into space, suction side 50A and discharge side space 60A medium flow space 50.Flexible cable 94 illustrates by rectangle in figure 4b, illustrates in Figure 4 A, this shows, have belt structure with line.

Shown in Fig. 4 A and Fig. 4 B, outer wall 30 and inwall 40 couple together by partition wall 90A and 90B, medium flow space 50 is divided into space, suction side 50A and discharge side space 60A.Partition wall 90A and 90B, encloses electronic component unit 92 from coaxial cable 10 side ring is wrapped, near the left side of extended until layered transducer elements 120 and right side.In other words, partition wall 90A with 90B does not contact left side and the right side of layered transducer elements 120.Utilize this structure, between partition wall 90A and the left side of layered transducer elements 120, form opening 96A, between partition wall 90B and the right side of layered transducer elements 120, form opening 96B.Opening 96A and 96B is arranged between space, suction side 50A in medium flow space 50 and discharge side space 60A.With this opening 96A with 96B, space, suction side 50A is communicated with discharge side space 60A.Space, the suction side 50A be connected and discharge side space 60A jointly forms the stream (hereinafter referred to as communication stream) of heat-transfer fluid capable of circulation, to be absorbed the heat from electronic component unit 92, layered transducer elements 120 by above-mentioned heat-transfer fluid.The flow direction of the heat-transfer fluid in communication stream need not be one direction, also can be multiple directions.And the number of opening 96A and 96B, size and configuration can suitably be changed as required.Communication stream can be open to outside, also can to Exterior capsule.

Suction inlet 70A is connected with circulating device (not shown) via the stream of heat-transfer fluid with discharge 80A.Circulating device promotes the circulation of the heat-transfer fluid in communication stream, improves the cooling effectiveness of the heat from electronic component unit 92, layered transducer elements 120.

The details of opening 96A and 96B is described referring to Fig. 5.Fig. 5 is the AE-AE profile of Figure 1A or Fig. 4 A, is the drawing in side sectional elevation of ultrasound probe 100.In Figure 5, opening 96A and 96B is interconnected.Opening 96A and 96B formation around layered transducer elements 120 has annular space and namely to communicate space 55.In other words, stream of communicating at least comprises space, suction side 50A, communication space 55 and discharge side space 60A.Space, suction side 50A, communication space 55 and discharge side space 60A are interconnected, and have received and kept heat-transfer fluid, to absorb the heat from electronic component unit 92, layered transducer elements 120 capable of circulationly.Like this, stream of communicating is arranged to make heat-transfer fluid flow through near electronic component unit 92, layered transducer elements 120.Thus, owing to being absorbed efficiently by heat-transfer fluid from the heat of electronic component unit 92, layered transducer elements 120, so cooling effect improves.

As above-mentioned explanation, ultrasound probe 100 has delivery in hot weather source of students 92 and 120, outer wall 30 and inwall 40.Outer wall 30 is arranged on delivery in hot weather source of students 92 and 120 around.Inwall 40 is arranged between outer wall 30 and delivery in hot weather source of students 92 and 120.In the flowing space surrounded by outer wall 30 and inwall 40, harvesting has the heat-transfer fluid of the heat produced from delivery in hot weather source of students 92 and 120 for conduction.Like this, because heat-transfer fluid is distributed in delivery in hot weather source of students 92 and 120 around, so the heat produced from delivery in hot weather source of students 92 and 120 can be absorbed efficiently.The heat absorbed by heat-transfer fluid is dispersed away from delivery in hot weather source of students 92 and 120 by conduction in heat-transfer fluid or because of the heat-transfer fluid heated up by heat.Therefore, the heat produced from delivery in hot weather source of students 92 and 120 can be cooled according to the ultrasound probe 100 of embodiment 1, can prevent the temperature of the inside of ultrasound probe 100 from rising.

(embodiment 2)

Secondly, according in the ultrasound probe of embodiment 1, be set to the previous section that outer wall and inwall do not cover layered transducer elements.According in the ultrasound probe of embodiment 2, be arranged to the previous section of outer wall and inwall covering layered transducer elements.The following describes the ultrasound probe according to embodiment 2.In addition, in the following description, for the element with function roughly the same with embodiment 1, give identical Reference numeral, only carry out repeat specification where necessary.

Fig. 6 A is the side view of the ultrasound probe 200 according to embodiment 2.Ultrasound probe 200 has framework 201.Probe cable 110 ' is installed in one end of framework 201, is configured with layered transducer elements 120 at the other end.Probe cable 110 ' is connected with the handling part of diagnostic ultrasound equipment, to receive and dispatch electric signal via coaxial cable 10 ' between the handling part and ultrasound probe 200 of diagnostic ultrasound equipment.Framework 201 provides the Handheld Division for hand-held ultrasound probe 200 to operator.Known with reference to other profile, the major part of framework 201 by the covering outside ultrasound probe 200 and outer wall 30 ' institute coated.Although ultrasound probe 200 is illustrative as the pocket device be connected with diagnostic ultrasound equipment cable, also can be non-pocket device.

Fig. 7 A is the E-E profile of Fig. 6 A, is the major axis profile of ultrasound probe 200.Shown in Fig. 7 A, the coaxial cable 10 ' that framework 201 is received and kept electronic component unit 92 and is connected with electronic component unit 92.Coaxial cable 10 ' is arranged on the inside of probe cable 110 '.Flexible cable 94 ' is connected to layered transducer elements 120 electronic component unit 92.As described above, the major part of framework 201 is coated by the outer wall 30 ' of ultrasound probe 200 institute.Outer wall 30 ' is extended to probe cable 110 ' from the previous section of layered transducer elements 120, with the previous section of the whole of overlay electronic component unit 92 with layered transducer elements 120.The covering of inner side and inwall 40 ' are configured in the inner side of outer wall 30 ', are arranged between outer wall 30 ' and electronic component unit 92.Inwall 40 ' is also in the same manner as outer wall 30 ', extended to probe cable 110 ' from the previous section of layered transducer elements 120, to cover the previous section of layered transducer elements 120.

Inwall 40 ' and outer wall 30 ' jointly form cavity and medium flow space 50 '.That is, the space surrounded by inwall 40 ' and outer wall 30 ' forms medium flow space 50 '.Be used in the middle filling of medium flow space 50 ' conducting the heat-transfer fluid of heat produced from electronic component unit 92, layered transducer elements 120.In order to conduction of heat, at random use the phase transformation of heat-transfer fluid.Usually, the heat produced from electronic component unit 92, layered transducer elements 120 is transmitted to outer wall 30 ' via inwall 40 '.Inwall 40 ' is formed by the material with at least high than outer wall 30 ' thermal conduction characteristic, to make thermal capacitance easily not conduct to the outer surface of outer wall 30 ' to heat-transfer fluid conduction.Such as, inwall 40 ' is formed by plastics, aluminum, carbon/aluminum, copper, graphite or other known heat-conducting substance, also can be formed by their combination in any.Medium flow space 50 ' extends along the major axis of ultrasound probe 200, and harvesting has above-mentioned heat-transfer fluid.Therefore, the major part from the heat of electronic component unit 92, layered transducer elements 120 was absorbed by heat-transfer fluid before arrival outer wall 30 '.Such as, heat-transfer fluid from suction inlet 70 ' via space, suction side 50A ' to the 60A ' movement of discharge side space, uni-directionally move to outlet 80 '.In addition, the flow direction of above-mentioned heat-transfer fluid also can be different direction.

Fig. 6 B is the top view of the ultrasound probe 200 according to embodiment 2.Fig. 6 B is figure Fig. 6 A 90-degree rotation obtained around major axis.In addition, " above " and " side " is the term representing relative position relation, the direction of the ultrasound probe 200 when being not meant to be use.Probe cable 110 ' has coaxial cable 10 ', suction inlet 70A ' and outlet 80A '.Be provided with between the probe outer side covers thing of cable 110 ' and coaxial cable 10 ' the suction inlet 70A ' of at least one pair of tubulose and outlet 80A ' both.Framework 201 receives and keeps electronic component unit.

Fig. 7 B is the F-F profile of Fig. 6 B, is the major axis profile of ultrasound probe 200.Shown in Fig. 7 B, framework 201 receives and keeps electronic component unit 92 and coaxial cable 10 '.Coaxial cable 10 ' is connected with electronic component unit 92.Flexible cable 94 ' is connected to layered transducer elements 120 electronic component unit 92.In addition, Fig. 7 B not shown partition wall 90A ' and 90B ' is separated to inwall 40 ' and outer wall 30 '.But as having illustrated in fig. 7, the major part of framework 201 is coated by outer wall 30 ' institute, and outer wall 30 ' is from putting the extended lateral parts to probe cable 110 ' near layered transducer elements 120.As described above, inwall 40 ' is configured in the inner side of outer wall 30 ', and is arranged between electronic component unit 92 and outer wall 30 '.Inwall 40 ' is also from putting the extended lateral parts to probe cable 110 ' near layered transducer elements 120.Partition wall 90A ' and 90B ' is being formed between outer wall 30 ' and inwall 40 ' along in the F-F section of major axis.

Partition wall 90A ' and 90B ' are connected with inwall 40 ' and outer wall 30 ' respectively.Partition wall 90A ' and 90B ' is divided at least two parts medium flow space 50 ' respectively.Be used in the middle harvesting of medium flow space 50 ' transmitting the heat-transfer fluid of heat produced from electronic component unit 92, layered transducer elements 120.Partition wall 90A ' and 90B ' is extended to probe cable 110 ' from putting near layered transducer elements 120 along major axis.About this structure, further illustrate in Fig. 9 A and Fig. 9 B.Because medium flow space 50 ' is extended along the major axis of ultrasound probe 200, so each medium flow space 50 ' after segmentation is also extended along major axis.

Fig. 8 is the L-L profile of Fig. 6 A, is the drawing in side sectional elevation of ultrasound probe 200.Both encirclement of outer wall 30 ' and inwall 40 ' is as the layered transducer elements 120 in the generation source of heat.Partition wall 90A ' and 90B ' is located between outer wall 30 ' and inwall 40 ' respectively, and both is connected with outer wall 30 ' and inwall 40 '.Like this, partition wall 90A ' and 90B ' is divided into space, suction side 50A ' and discharge side space 60A ' medium flow space 50 '.

Fig. 9 A is the amplification profile of the subregion J of Fig. 7 A, is the figure of the details that medium flow space 50 ' is shown.Shown in the J of subregion, inwall 40 ' and outer wall 30 ' jointly form medium flow space 50 ', and extended one-tenth crosses electronic component unit 92 from the side of coaxial cable 10 ', cover the previous section of layered transducer elements 120.At this, the space of the previous section of the layered transducer elements 120 in medium flow space 50 ' is called shared connected space 96C.In other words, layered transducer elements 120 is arranged on the rear of shared connected space 96C.Electronic component unit 92 is connected to via flexible cable 94 ' after layered transducer elements 120.

Fig. 9 B is the amplification profile of the subregion K of Fig. 7 B, is the figure of the details that partition wall 90A ' and 90B ' is shown.Fig. 9 B is orthogonal with Fig. 9 A.Therefore, in figures 9 b and 9, partition wall 90A ' and 90B ' splits medium flow space 50 '.Similarly, flexible cable 94 ' illustrates by rectangle in figures 9 b and 9, illustrates in figure 9 a with line, it can thus be appreciated that, there is belt structure.As described above, covered by shared connected space 96C before layered transducer elements 120, after layered transducer elements 120, be connected to electronic component unit 92 via flexible cable 94 '.

Shown in Fig. 9 A and Fig. 9 B, partition wall 90A ' and 90B ' is extended near the side of layered transducer elements 120 near the side of the interior coaxial cable 10 ' of medium flow space 50 '.That is, partition wall 90A ' and 90B ' can not the extended previous section side arriving the interior layered transducer elements 120 of medium flow space 50 '.Utilize this structure, in the medium flow space 50 ' of the previous section side of layered transducer elements 120, form the shared connected space 96C that there is not partition wall 90A ' and 90B '.Share connected space 96C as the communication stream being used for making heat-transfer fluid circulate between space, suction side 50A ' and discharge side space 60A '.Space, suction side 50A ' and discharge side space 60A ' jointly forms the communication stream of heat-transfer fluid capable of circulation, to be absorbed the heat from electronic component unit 92, layered transducer elements 120 by above-mentioned heat-transfer fluid.Flowing in this communication stream need not be one direction.And sharing the number of connected space 96C, size and configuration can suitably change as required.Communication stream can be open to outside, also can to Exterior capsule.

Suction inlet 70A ' is connected with circulating device (not shown) via the stream of heat-transfer fluid with outlet 80A '.Circulating device promotes the circulation of the heat-transfer fluid in communication stream, improves the cooling effectiveness of the heat from electronic component unit 92, layered transducer elements 120.

The details of opening 96A and 96B is described referring to Figure 10.Figure 10 is the H-H profile of Fig. 6 A or Fig. 9 A, is the drawing in side sectional elevation of ultrasound probe 200.In Fig. 10, share connected space 96C the space in Fig. 10 with toroidal is connected with layered transducer elements 120.In other words, stream of communicating at least comprises space, suction side 50A ', shares connected space 96C and discharge side space 60A '.Space, suction side 50A ', shared connected space 96C and discharge side space 60A ' are interconnected, and receive and keep heat-transfer fluid, to absorb the heat from electronic component unit 92, layered transducer elements 120 capable of circulationly.The flowing of the heat-transfer fluid in communication stream is not limited to be one direction, also can be any direction.

As above-mentioned explanation, ultrasound probe 200 has delivery in hot weather source of students 92 and 120, outer wall 30 ' and inwall 40 '.Outer wall 30 ' is arranged on delivery in hot weather source of students 92 and 120 around.Inwall 40 ' is arranged between outer wall 30 ' and delivery in hot weather source of students 92 and 120.In more detail, outer wall 30 ' and inwall 40 ' are arranged to the previous section covering layered transducer elements 120.In the flowing space surrounded by outer wall 30 ' and inwall 40 ', receive and keep the heat-transfer fluid being used for conducting the heat produced from delivery in hot weather source of students 92 and 120.Like this, because heat-transfer fluid is distributed in delivery in hot weather source of students 92 and 120 around, so the heat produced from delivery in hot weather source of students 92 and 120 can be absorbed efficiently.In addition, because the flowing space (sharing connected space 96C) leads to the previous section side of the layered transducer elements 120 that temperature rises fast, so ultrasound probe 200 can absorb the heat produced from layered transducer elements 120 efficiently.In addition, as described above, owing to there is not partition wall 90A ' and 90B ' in the previous section side of layered transducer elements 120, so the good propagation of the ultrasonic echo that the ultrasonic pulse, the layered transducer elements 120 that send from layered transducer elements 120 receive can be maintained.

(embodiment 3)

Secondly, according in the ultrasound probe of embodiment 1, layered transducer elements is arranged on the inner side of framework.According in the ultrasound probe of embodiment 3, layered transducer elements is arranged on the outside of framework.The following describes the ultrasound probe according to embodiment 3.In addition, in the following description, for the element with function roughly the same with embodiment 1, give identical Reference numeral, only carry out repeat specification where necessary.

Figure 11 A is the side view of the ultrasound probe 300 according to embodiment 3.Ultrasound probe 300 has framework 301.Probe cable 110 is installed in one end of framework 301 ", the layered transducer elements 120 be made up of multiple oscillator is configured at the other end.Probe cable 110 " is connected with the handling part of diagnostic ultrasound equipment, so that via coaxial cable 10 and " between the handling part and ultrasound probe 300 of diagnostic ultrasound equipment, receives and dispatches electric signal.Framework 301 provides the Handheld Division for hand-held ultrasound probe 300 to operator.Known with reference to other profile, the major part of framework 301 is by the covering outside ultrasound probe 300 and outer wall 30, and " institute is coated.Although ultrasound probe 300 is illustrative as the pocket device be connected with diagnostic ultrasound equipment cable, also can be non-pocket device.

Figure 12 A is the B-B profile of Figure 11 A, is the major axis profile of ultrasound probe 300.Shown in Figure 12 A, the coaxial cable 10 that framework 301 is received and kept electronic component unit 92 and is connected with electronic component unit 92 ".The inside of coaxial cable 10 " being arranged on probe cable 110 ".Flexible cable 94 " is connected to layered transducer elements 120 electronic component unit 92.As described above, the major part of framework 301 is by the outer wall 30 of ultrasound probe 300, and " institute is coated.The lateral parts of outer wall 30 " extended to probe cable 110 from the aft section of layered transducer elements 120 ", whole with overlay electronic component unit 92.That is, layered transducer elements 120 is arranged on the outer surface of outer wall, is exposed to outside.The covering of inner side and the inner side of inwall 40 " being configured in outer wall 30 ", be arranged on outer wall 30 " and between electronic component unit 92.The lateral parts of inwall 40 " extended to probe cable 110 along major axis from the aft section side of layered transducer elements 120 ".

Inwall 40 " and outer wall 30 " jointly forms cavity and medium flow space 50 ".Utilize said structure, medium flow space 50 and " be arranged on the aft section side of layered transducer elements 120.At medium flow space 50 " in be filled with the heat-transfer fluid of heat produced from electronic component unit 92, layered transducer elements 120 for conduction.In order to conduction of heat, at random use the phase transformation of heat-transfer fluid.Usually, heat is via inwall 40 " being transmitted to outer wall 30 ".The material of the thermal conduction characteristic that inwall 40 " by having at least than outer wall 30 " is high is formed, so as to make thermal capacitance easily to regulation heat-transfer fluid conduction and not to outer wall 30 " outer surface conduction.Such as, inwall 40 " is formed by plastics, aluminum, carbon/aluminum, copper, graphite or other known heat-conducting substance, also can be formed by their combination in any." major axis along ultrasound probe 300 is extended, receives and keeps above-mentioned heat-transfer fluid for medium flow space 50.Therefore, from the major part of the heat of electronic component unit 92, layered transducer elements 120, " absorbed by heat-transfer fluid before at arrival outer wall 30.Such as, heat-transfer fluid is from suction inlet 70 " via space, suction side 50A " to discharge side space 60A " mobile, " uni-directionally move to outlet 80.In addition, the flow direction of above-mentioned heat-transfer fluid also can be different direction.

Figure 11 B is the top view of the ultrasound probe 300 according to embodiment 3.Figure 11 B is figure Figure 11 A 90-degree rotation obtained around major axis.In addition, " above " and " side " is the term representing relative position relation, the direction of the ultrasound probe 300 when being not meant to be use.In one end of framework 301, probe cable 110 is installed along major axis ", at the other end, layered transducer elements 120 is installed.Probe cable 110 " there is coaxial cable 10 further ", suction inlet 70A " and outlet 80A ".Be provided with between probe cable 110 " outer side covers thing and coaxial cable 10 " at least one pair of tubulose suction inlet 70A " with outlet 80A " both.Framework 301 receives and keeps electronic component unit.

Figure 12 B is the A-A profile of Figure 11 B, is the major axis profile of ultrasound probe 300.Shown in Figure 12 B, framework 301 receives and keeps electronic component unit 92 and coaxial cable 10 ".Coaxial cable 10 " is connected with electronic component unit 92.Flexible cable 94 " is connected to layered transducer elements 120 electronic component unit 92.In addition, Figure 12 B not shown partition wall 90A " and 90B " is separated for inwall 40 " and outer wall 30 ".But as having illustrated in fig. 12, the major part of framework 301 is by outer wall 30, " institute is coated, the lateral parts of outer wall 30 " extended to probe cable 110 from the aft section of layered transducer elements 120 ".As described above, the inner side of inwall 40 " being configured in outer wall 30 ", is arranged on electronic component unit 92 and outer wall 30 " between.The lateral parts of inwall 40 " also extended to probe cable 110 from the aft section of layered transducer elements 120 ".Partition wall 90A " and 90B " is being formed between outer wall 30 " and inwall 40 " along in the A-A section of major axis.

Partition wall 90A " with 90B " is connected with inwall 40 " and outer wall 30 " respectively.Partition wall 90A " and 90B " " is divided at least two parts medium flow space 50 respectively.At medium flow space 50 " in harvesting be used for transmitting the above-mentioned heat-transfer fluid be made up of the material of gas, liquid etc. of heat produced from electronic component unit 92, layered transducer elements 120.Partition wall 90A " and 90B " along major axis from put near layered transducer elements 120 extended to probe cable 110 " lateral parts.About this structure, further illustrate in Figure 14 A and Figure 14 B.Due to medium flow space 50, " major axis along ultrasound probe 300 is extended, so each medium flow space 50 after segmentation is " also extended along major axis.

Figure 13 is the K-K profile of Figure 11 A, is the drawing in side sectional elevation of ultrasound probe 300.Partition wall 90A " and 90B " is located between outer wall 30 " and inwall 40 " respectively, and both is connected partition wall 90A " with 90B " with outer wall 30 " and inwall 40 " respectively.Like this, partition wall 90A " and 90B " is medium flow space 50 " being divided into space, suction side 50 " A and discharge side space 60A ".

Figure 14 A is the amplification profile of the subregion J of Figure 12 A, is that medium flow space 50 is shown " the figure of details.The extended aft section to layered transducer elements 120 of lateral parts that shown in the J of subregion, inwall 40 " and outer wall 30 " jointly forms medium flow space 50 ", be arranged to from coaxial cable 10 ", whole with overlay electronic component unit 92.At this, the space of the aft section side of the layered transducer elements 120 in medium flow space 50 ' is called shared connected space 96D.In other words, layered transducer elements 120 is arranged on the front of shared connected space 96D." electronic component unit 92 is connected to via flexible cable 94 after layered transducer elements 120.

Figure 14 B is the amplification profile of the subregion M of Figure 12 B, is the figure of the details that partition wall 90A " and 90B " is shown.Figure 14 B is orthogonal with Figure 14 A.Therefore, in Figure 14 B, partition wall 90A " and 90B " " segmentation respectively medium flow space 50.Similarly, flexible cable 94 " illustrate by rectangle in Figure 14 B, illustrate with line in Figure 14 A, it can thus be appreciated that, there is belt structure.

Shown in Figure 14 A and Figure 14 B, partition wall 90A " and 90B " is near the side of medium flow space 50 " near the side of interior coaxial cable 10 ' the extended flexible cable 94 to layered transducer elements 120 ".Utilize this structure, formed between partition wall 90A " and flexible cable 94 ", between partition wall 90B " and flexible cable 94 " and share connected space 96D.Share connected space 96D as the communication stream being used for making heat-transfer fluid circulate between space, suction side 50A " and discharge side space 60A ".Space, the suction side 50A " and discharge side space 60A " be connected jointly forms the communication stream of heat-transfer fluid capable of circulation, to be absorbed the heat from electronic component unit 92, layered transducer elements 120 by above-mentioned heat-transfer fluid.Flowing in this communication stream need not be one direction.And sharing the number of connected space 96D, size and configuration can suitably change as required.Communication stream can be open to outside, also can to Exterior capsule.

Suction inlet 70A " with outlet 80A " is connected via stream and the circulating device (not shown) of heat-transfer fluid.Circulating device promotes the circulation of the heat-transfer fluid in communication stream, improves the cooling effectiveness of the heat from electronic component unit 92, layered transducer elements 120.

The details of shared connected space 96D is described referring to Figure 15.Figure 15 is the D-D profile of Figure 11 A or Figure 14 A, is the drawing in side sectional elevation of ultrasound probe 300.In fig .15, share connected space 96D and be arranged near layered transducer elements 120, there is toroidal.In other words, stream of communicating at least comprises space, suction side 50 " A, shared connected space 96D and discharge side space 60A ".Space, suction side 50 " A, shared connected space 96D and discharge side space 60A " is interconnected, and receives and keeps heat-transfer fluid to absorb the heat from electronic component unit 92, layered transducer elements 120 capable of circulationly.The flowing of the heat-transfer fluid in communication stream is not limited to be one direction, also can be any direction.

As above-mentioned explanation, ultrasound probe 300 has delivery in hot weather source of students 92 and 120, outer wall 30 " and inwall 40 ".Outer wall 30 " be arranged on as delivery in hot weather source of students electronic component unit 92 around.Between inwall 40 " being arranged on outer wall 30 " and electronic component unit 92.In more detail, outer wall 30 " is arranged to the whole of overlay electronic component unit 92 and layered transducer elements 120 is exposed to outside.In other words, outer wall 30 " surface and the rear contact of layered transducer elements 120.In the flowing space surrounded by outer wall 30 " and inwall 40 ", receive and keep the heat-transfer fluid being used for conducting the heat produced from delivery in hot weather source of students 92 and 120.Like this, because heat-transfer fluid is distributed in delivery in hot weather source of students 92 and 120 around, so the heat produced from delivery in hot weather source of students 92 and 120 can be absorbed efficiently.In addition, because the flowing space (sharing connected space 96D) leads to the aft section side of the layered transducer elements 120 that temperature rises fast, so ultrasound probe 300 can absorb the heat produced from layered transducer elements 120 efficiently.In addition, owing to there is not outer wall 30 " and inwall 40 " in the previous section side of layered transducer elements 120, so the good propagation of the ultrasonic echo that the ultrasonic pulse, the layered transducer elements 120 that send from layered transducer elements 120 receive can be maintained.

(embodiment 4)

Secondly, according in the ultrasound probe of embodiment 1, be set to and one deck medium flow space is set in the inner side of framework.According in the ultrasound probe of embodiment 4, the inner side of framework is provided with the multilayer dielectricity flowing space.The following describes the ultrasound probe according to embodiment 4.In addition, in the following description, for the element with function roughly the same with embodiment 1, give identical Reference numeral, only carry out repeat specification where necessary.

Figure 16 is the side view of the ultrasound probe 400 according to embodiment 4.Ultrasound probe 400 has framework 401.Probe cable 110 is installed in one end of framework 401 " ', be configured with layered transducer elements 120 at the other end.Probe cable 110 " ' be connected with the handling part of diagnostic ultrasound equipment, so that via coaxial cable 10 " ' between the handling part and ultrasound probe 400 of diagnostic ultrasound equipment, receive and dispatch electric signal.Framework 401 provides the Handheld Division for hand-held ultrasound probe 400 to operator.Known with reference to other profile, the major part of framework 401 is by the covering outside ultrasound probe 400 and outer wall 30, and " ' institute is coated.Although ultrasound probe 400 is illustrative as the pocket device be connected with diagnostic ultrasound equipment cable, also can be non-pocket device.

Figure 17 is the probe cable 110 of the ultrasound probe 400 shown in Figure 16 " ' amplification stereogram.Shown in Figure 17, the aft section of ultrasound probe 400 be provided with suction inlet 70A-1 " ', outlet 80A-1 " ', suction inlet 70A-2 " ' and outlet 80A-2 " '.Suction inlet 70A-1 " ' with outlet 80A-1 " ' is communicated with, and suction inlet 70A-2 " ' with outlet 80A-2 " ' is communicated with.Suction inlet 70A-1 " ', outlet 80A-1 " ', suction inlet 70A-2 " ' and outlet 80A-2 " ' round coaxial cable 10 " ' arrange.Suction inlet 70A-1 " ' and outlet 80A-1 " ' is arranged on than suction inlet 70A-2 " ' and outlet 80A-2 " ' from coaxial cable 10 " on ' farther position.Its reason describes below.

Figure 18 is the figure of the previous section that ultrasound probe 400 is shown.Shown in Figure 18, the previous section of ultrasound probe 400 has four concentric circular regions.Four concentric circular regions have: what be arranged on inner side has round-shaped sound lens 130, the annulus region 401A, the first tilting zone 401B that surround sound lens 130 and the second tilting zone 401C.Annulus region 401A, the first tilting zone 401B and the second tilting zone 401C form the part of framework 401, form outer wall 30 " ' a part.

Figure 19 is the N-N profile of Figure 18, is the major axis profile of ultrasound probe 400.Shown in Figure 19, the coaxial cable 10 that framework 401 is received and kept electronic component unit 92 and is connected with electronic component unit 92 " '.Coaxial cable 10 " ' be arranged on probe cable 110 " ' inside.Flexible cable 94 " ' electronic component unit 92 is connected to layered transducer elements 120.As described above, the major part of framework 401 is by the outer wall 30 of ultrasound probe 400, and " ' institute is coated.Outer wall 30 " ' from the extended whole probe cable 110 to overlay electronic component unit 92 of the lateral parts of the front face side of layered transducer elements 120 " ' lateral parts.The inner side of the first covering i.e. first inwall 40-1 " ' be configured in outer wall 30 " ' of inner side, is arranged on outer wall 30 " ' and electronic component unit 92 between.The lateral parts of the first inwall 40-1 " ' from the extended whole probe cable 110 to overlay electronic component unit 92 of the lateral parts of the front face side of layered transducer elements 120 " '.The inner side of the second inwall 40-2 " ' be configured in outer wall 30 " ', is arranged on electronic component unit 92 and the first inwall 40-1 " ' between.The lateral parts of the second inwall 40-2 extended whole probe cable 110 to overlay electronic component unit 92 of lateral parts of the side below of layered transducer elements 120 " ' from " '.

First inwall 40-1 " ' and outer wall 30 " ' jointly form the first cavity and first medium flowing space 50-1 " '.That is, the space surrounded by the first inwall 40-1 " ' and outer wall 30 " ' forms first medium flowing space 50-1 " '.First medium flowing space 50-1 " ' not with the contacts side surfaces of layered transducer elements 120, tapering near the side of the front face side of layered transducer elements 120.That is, in the previous section of layered transducer elements 120, the first inwall 40-1 " ' with outer wall 30 " ' contacts.At first medium flowing space 50-1 " ' in be filled with the heat-transfer fluid of heat produced from electronic component unit 92, layered transducer elements 120 for conduction.Similarly, the first inwall 40-1 " ' and the second inwall 40-2 " ' jointly forms the second cavity and the second medium flowing space.That is, the space surrounded by the first inwall 40-1 " ' and the second inwall 40-2 " ' forms the second medium flowing space.In addition, in Figure 19, be not used in the partition wall 90A arranged in the second medium flowing space " ' the second medium flowing space is shown.The second medium flowing space is arranged to the contacts side surfaces with layered transducer elements 120.Also the heat-transfer fluid of the heat produced from electronic component unit 92, layered transducer elements 120 for conduction is filled with in the second medium flowing space.Like this, in ultrasound probe 400 with first medium flowing space 50-1 " ' and the second medium flowing space realize the two layer medium flowing space.

Partition wall 90A " ' with 90B " ' and the first inwall 40-1 " ' and the second inwall 40-2 " ' be connected.Partition wall 90A " ' and 90B " ' the second medium flowing space is divided at least two parts.Partition wall 90A " ' and 90B " ' is extended to probe cable 110 from putting near layered transducer elements 120 along major axis " ' lateral parts.About this structure, further illustrate in fig. 20.Because the second medium flowing space is extended along the major axis of ultrasound probe 400, so each second medium flowing space after segmentation is also extended along major axis.

Figure 20 is the amplification profile of the subregion Q of Figure 19.Shown in Figure 20, the first inwall 40-1 " ' and outer wall 30 " ' jointly form first medium flowing space 50-1 " '.The previous section of framework 401 is formed as almost parallel with the previous section of layered transducer elements 120, has even shape.Covered by sound lens 130 before layered transducer elements 120.Via flexible cable 94 after layered transducer elements 120 " ' be connected to electronic component unit 92.

Partition wall 90A " ' with 90B " ' is connected the first inwall 40-1 " ' and the second inwall 40-2 " ', with second medium flowing space 50-2 " ' be divided into the second space, suction side 50A-2 " ' and the second discharge side space 60A-2 " '.Second space, suction side 50A-2 " ' with suction inlet 70A-2 " ' is communicated with, and the second discharge side space 60A-2 " ' with outlet 80A-2 " ' is communicated with.Partition wall 90A " ' and 90B " ' is from coaxial cable 10, and " ' side ring is wrapped encloses electronic component unit 92, near the upper surface of extended until layered transducer elements 120 and lower surface.In other words, partition wall 90A " ' with 90B " ' does not contact upper surface and the lower surface of layered transducer elements 120.Utilize this structure, at partition wall 90A " ' and the upper surface of layered transducer elements 120 between form opening 96A " ', at partition wall 90B " ' and the lower surface of layered transducer elements 120 between form opening 96B " '.Opening 96A " ' and 96B " ' is arranged on second medium flowing space 50-2 " ' in the second space, suction side 50A-2 " ' and the second discharge side space 60A-2 " ' between.With this opening 96A " ' with 96B " ', the second space, suction side 50A-2 " ' with the second discharge side space 60A-2 " ' is communicated with.The second space, suction side 50A-2 of being connected " ' and the second discharge side space 60A-2 " ' forms the second communication stream of the heat-transfer fluid that is used for circulating.Second communication stream receives and keeps heat-transfer fluid, to absorb the heat from electronic component unit 92, layered transducer elements 120 capable of circulationly.Such as, heat-conduction medium is from the second space, suction side 50A-2 " ' via the second suction inlet 70A-2 " ' to the second discharge side space 60A-2 " ' mobile, to second row outlet 80A-2 " ' uni-directionally move.The flowing of the heat-transfer fluid in the second communication stream is not limited to be one direction, also can be any direction.And the number of opening 96A " ' and 96B " ', size and configuration can suitably be changed as required.Second communication stream can be open to outside, also can to Exterior capsule.

Suction inlet 70A-2 " ' with outlet 80A-2 " ' is connected via stream and the circulating device (not shown) of heat-transfer fluid.Circulating device promotes the circulation of the heat-transfer fluid in the second communication stream, improves the cooling effectiveness of the heat from electronic component unit 92, layered transducer elements 120.

Figure 21 is the E-E profile of Figure 18.Shown in Figure 21, the coaxial cable 10 that framework 401 is received and kept electronic component unit 92 and is connected with electronic component unit 92 " '.Outer wall 30 " ' extended to probe cable 110 from putting near layered transducer elements 120 " ' lateral parts.The inner side of the first inwall 40-1 " ' be configured in outer wall 30 " ', is arranged on outer wall 30 " ' and electronic component unit 92 between.The inner side of the second inwall 40-2 " ' be configured in outer wall 30 " ', is arranged on electronic component unit 92 and the first inwall 40-1 " ' between.First inwall 40-1 " ' and the second inwall 40-2 " ' is extended to probe cable 110 from putting near layered transducer elements 120 along major axis " ' lateral parts.

First inwall 40-1 " ' and outer wall 30 " ' form first medium flowing space 50-1 " '.At first medium flowing space 50-1 " ' in be filled with heat-transfer fluid.In addition, in figure 21, be not used in the partition wall 90C " ' and 90D " ' arranged in the first medium flowing space and the first medium flowing space is shown.

Partition wall 90C " ' with 90D " ' and outer wall 30 " ' and the first inwall 40-1 " ' be connected.Partition wall 90C " ' and 90D " ' first medium flowing space 50-1 " ' be divided at least two parts.Partition wall 90C " ' and 90D " ' is extended to probe cable 110 from putting near layered transducer elements 120 along major axis " ' lateral parts.Due to first medium flowing space 50-1 " ' extended along the major axis of ultrasound probe 400, so each first medium flowing space after segmentation is also extended along major axis.

Figure 22 is the amplification profile of the subregion T of Figure 21.Shown in Figure 22, the first inwall 40-1 " ' and outer wall 30 " ' jointly form first medium flowing space 50-1 " ', extended one-tenth crosses electronic component unit 92.

Partition wall 90C " ' with 90D " ' be connected outer wall 30 " ' and the first inwall 40-1 " ', with first medium flowing space 50-1 " ' be divided into the first space, suction side 50A-1 " ' and the first discharge side space 60A-1 " '.First space, suction side 50A-1 " ' with suction inlet 70A-1 " ' is communicated with, and the first discharge side space 60A-1 " ' with outlet 80A-1 " ' is communicated with.Partition wall 90C " ' and 90D " ' is from coaxial cable 10, and " ' side ring is wrapped encloses electronic component unit 92, near the left side of extended until layered transducer elements 120 and right side.In other words, partition wall 90C " ' with 90D " ' does not contact left side and the right side of layered transducer elements 120.Utilize this structure, at partition wall 90C " ' and the left side of layered transducer elements 120 between form opening 96C " ', at partition wall 90D " ' and the right side of layered transducer elements 120 between form opening 96D " '.Opening 96C " ' and 96D " ' is arranged on first medium flowing space 50-1 " ' in the first space, suction side 50A-1 " ' and the first discharge side space 60A-1 " ' between.With this opening 96C " ' with 96D " ', the first space, suction side 50A-1 " ' with the first discharge side space 60A-1 " ' is communicated with.The first space, suction side 50A-1 of being connected " ' and the first discharge side space 60A-1 " ' forms the first communication stream of the heat-transfer fluid that is used for circulating.First communication stream receives and keeps heat-transfer fluid, to absorb the heat from electronic component unit 92, layered transducer elements 120 capable of circulationly.Such as, heat-conduction medium is from the first space, suction side 50A-1 " ' via the first suction inlet 70A-1 " ' to the first discharge side space 60A-1 " ' mobile, to first row outlet 80A-1 " ' uni-directionally move.The flowing of the heat-transfer fluid in the first communication stream is not limited to be one direction, also can be any direction.And the number of opening 96C " ' and 96D " ', size and configuration can suitably be changed as required.First communication stream can be open to outside, also can to Exterior capsule.

Suction inlet 70A-1 " ' with outlet 80A-1 " ' is connected via stream and the circulating device (not shown) of heat-transfer fluid.Circulating device promotes the circulation of the heat-transfer fluid in the first communication stream, improves the cooling effectiveness of the heat from electronic component unit 92, layered transducer elements 120.

As Figure 19,20, shown in 21 and 22, the heat from electronic component unit 92, layered transducer elements 120 is transmitted to outer wall 30 via the first inwall 40-1 " ' and the second inwall 40-2 " ' " '.First inwall 40-1 " ' and the second inwall 40-2 " ' is by having at least than outer wall 30 " material of ' high thermal conduction characteristic is formed so that make thermal capacitance easily to heat-transfer fluid conduction not to outer wall 30 " ' outer surface conduct.In addition, outer wall 30 " ' there is thermal insulation.Such as, the first inwall 40-1 " ' and the second inwall 40-2 " ' formed by plastics, aluminum, carbon/aluminum, copper, graphite or other known heat-conducting substance, also can be formed by their combination in any.First inwall 40-1 " ' and the second inwall 40-2 " ' can be formed with the material of identical type, also can be formed with different types of material.In addition, can be formed with the material of identical type with the heat-transfer fluid in second medium flowing space 50-2 " ' and 60-2 " ' middle flowing at the heat-transfer fluid of first medium flowing space 50-1 " ' and 60-1 " ' middle flowing, also can be formed with different types of material.

As Figure 19,20, shown in 21 and 22, the first medium flowing space 50-1 of harvesting heat-transfer fluid " ' and second medium flowing space 50-2 " ' is arranged to surround electronic component unit 92, layered transducer elements 120.Therefore, the heat produced from electronic component unit 92, layered transducer elements 120 arrives the heat-transfer fluid of outer wall 30 " ' before by first medium flowing space 50-1 " ' middle flowing and " heat-transfer fluid of ' middle flowing absorbs at second medium flowing space 50-2.

In Figure 19,20,21 and 22, be set to and be provided with two-layer flow space 50 in ultrasound probe 400, be i.e. first medium flowing space 50-1 " ' and 60-1 " ' and second medium flowing space 50-2 " ' and 60-2 " '.But the number of the medium flow space arranged in ultrasound probe 400 is not limited to two, also can be more than 3.Such multilayer dielectricity flowing space forms multiple stream of independently communicating.Or the multilayer dielectricity flowing space also integration can become a stream of communicating.Moreover, it can be, the several communication streams in this multilamellar communication stream form multiple stream of independently communicating, and the remaining communication stream integration in multilamellar communication stream becomes a stream of communicating.

As above-mentioned explanation, ultrasound probe 400 have delivery in hot weather source of students 92 and 120, outer wall 30 " ' and multiple inwall 40 " '.Outer wall 30 " ' be arranged on delivery in hot weather source of students 92 and 120 around.Between multiple inwall 40 " ', be arranged on outer wall 30 " ' and delivery in hot weather source of students 92 and 120, form multiple flowing spaces of the heat-transfer fluid can receiving and keeping the heat produced from delivery in hot weather source of students 92 and 120 for conduction.Like this, due to multiple flowing space each in the heat-transfer fluid received and kept be distributed in around delivery in hot weather source of students 92 and 120, so the heat produced from delivery in hot weather source of students 92 and 120 can be absorbed efficiently.In addition, by arranging the multilamellar flowing space, compared with when the monolayer flowing space is set, the heat from electronic component unit 92, layered transducer elements 120 can be more efficiently made to cool.

In addition, ultrasound probe 400 has multiple partition wall 90 " '.Each of multiple partition wall be arranged on outer wall 30 " ' and multiple inwall 40 " ' in hithermost inwall 40 " ' between; with outer wall 30 " ' and hithermost inwall 40 " ' both is connected, to form at least one stream of heat-transfer fluid at least one flowing space in multiple flowing space.Thus, can in each flowing space, heat-transfer fluid be flowed, can more efficiently make the heat from electronic component unit 92, layered transducer elements 120 cool.

(embodiment 5)

According in the ultrasound probe of embodiment 5, the works being used for improving cooling effectiveness is set in medium flow space.The following describes the ultrasound probe according to embodiment 5.In addition, in the following description, for the element with function roughly the same with embodiment 1, give identical Reference numeral, only carry out repeat specification where necessary.

Figure 23 is the side view of the ultrasound probe 500 according to embodiment 5.Shown in Figure 23, ultrasound probe 500 has framework 501.Probe cable 110 " " is installed in one end of framework 501, is configured with layered transducer elements 120 at the other end.Probe cable 110 " " is connected with the handling part of diagnostic ultrasound equipment, receives and dispatches electric signal via coaxial cable 10 " " between the handling part and ultrasound probe 500 of diagnostic ultrasound equipment.Framework 501 provides the Handheld Division for hand-held ultrasound probe 500 to operator.Known with reference to other profile, the major part of framework 501 by the covering outside ultrasound probe 500 and outer wall 30 " " institute coated.Although ultrasound probe 500 is illustrative as the pocket device be connected with diagnostic ultrasound equipment cable, also can be non-pocket device.

Figure 24 is the C-C profile of Figure 23, is the drawing in side sectional elevation of ultrasound probe 500.Shown in Figure 24, outer wall 30 " " and inwall 40 " " are arranged to surround the electronic component unit 92 as delivery in hot weather source of students in framework 501.Partition wall 90A " " and 90B " " is located between outer wall 30 " " and inwall 40 " " respectively.In addition, both is connected with outer wall 30 " " and inwall 40 " " respectively for partition wall 90A " " and 90B " ".Like this, partition wall 90A " " and 90B " " is divided into space, suction side 50A " " and discharge side space 60A " " medium flow space 50 " ".In the inside in space, suction side 50A " " and discharge side space 60A " ", multiple fin 98 is set.Such as, inwall 40 " " is formed by plastics, aluminum, carbon/aluminum, copper, graphite or other known heat-conducting substance, also can be formed by their combination in any.

Figure 25 is the amplification profile of the ultrasound probe 500 in the subregion E of Figure 24.Shown in Figure 25, between outer wall 30 " " and inwall 40 " ", multiple fin 98 is installed on inwall 40 " " towards outer wall 30 " ".Multiple fin 98 increases the surface area of inwall 40 " ", to improve cooling effectiveness.Such as, when inwall 40 " " is formed with plastics, can above form multiple fin 98 by injection-molded at inwall 40 " ".And when inwall 40 " " is formed with metal or other material, turning (skiving), injection-molded, silk thread EDM technique etc. can be passed through and form multiple fin 98.

Figure 26 is the G-G profile of Figure 23, is the profile of cutting sth. askew of ultrasound probe 500.Shown in Figure 26, outer wall 30 " " and inwall 40 " " are arranged to surround the electronic component unit 92 as delivery in hot weather source of students in framework 501.Partition wall 90A " " and 90B " " is located between outer wall 30 " " and inwall 40 " " respectively.In addition, both is connected with outer wall 30 " " and inwall 40 " " respectively for partition wall 90A " " and 90B " ".Like this, partition wall 90A " " and 90B " " is divided into space, suction side 50A " " and discharge side space 60A " " medium flow space 50 " ".The inside in space, suction side 50A " " and discharge side space 60A " " is provided with multiple fin 98.

Figure 27 is the amplification profile of the ultrasound probe 500 in the subregion J of Figure 26.Shown in Figure 27, multiple fin 98, between outer wall 30 " " and inwall 40 " ", is installed on inwall 40 " " towards outer wall 30 " ".Multiple fin 98 increases the surface area of inwall 40 " ", to improve cooling effectiveness.Shown in Figure 27, fin 98 has " U " shape.The number of fin 98, shape and size are not limited to above-mentioned example, and number whatever, shape and size can.

As described above, not only in embodiment 5, multiple fin 98 also can be set according in the ultrasound probe of embodiment 1,2,3 or 4.And, multiple fin 98 can be set to each inwall at embodiment 4.

As above-mentioned explanation, ultrasound probe 500 has multiple fin 98 in medium flow space 50 " ".Multiple fin 98 be arranged on inwall 40 " " towards on the surface of medium flow space 50 " ".That is, multiple fin 98 increases the surface area of inwall 40 " ".Utilize this structure, increase the heat-transfer fluid of flowing and the contact surface of inwall 40 " " in medium flow space 50 " ", increase heat-transfer fluid to the absorbtivity of the heat from electronic component unit 92, layered transducer elements 120.Therefore, ultrasound probe 500 can make to cool from the heat of electronic component unit 92, layered transducer elements 120 efficiently.

(embodiment 6)

According in the ultrasound probe of embodiment 6, outer wall arranges the floss hole (notch part) being used for improving cooling effectiveness.The following describes the ultrasound probe according to embodiment 6.In addition, in the following description, give identical Reference numeral for the element with function roughly the same with embodiment 1, only carry out repeat specification where necessary.

Figure 28 is the axonometric chart of the ultrasound probe 600 according to embodiment 6.Shown in Figure 28, ultrasound probe 600 has framework 601.Be provided with in one end of framework 601 probe cable 110 " " ', be configured with layered transducer elements 120 at the other end.Probe cable 110 " " ' be connected with the handling part of diagnostic ultrasound equipment, via coaxial cable 10 " " ' receive and dispatch electric signal between the handling part and ultrasound probe 600 of diagnostic ultrasound equipment.In addition, framework 601 to operator provide for hand-held ultrasound probe 600 Handheld Division.Known with reference to other profile, the major part of framework 601 by the covering outside ultrasound probe 600 and outer wall 30 " " ' institute coated.Although ultrasound probe 600 is illustrative as the pocket device be connected with diagnostic ultrasound equipment cable, can be non-pocket device.

Figure 29 is the figure of the previous section of the ultrasound probe 600 illustrated according to embodiment 6.Shown in Figure 29, the previous section of ultrasound probe 600 has four concentric circular regions.Four concentric circular regions have: that be arranged on inner side with most inner region that is sound lens 130 " " ' consistent, surround sound lens 130 " " ' first ring shape area 601A, floss hole 97 and the second annulus region 601B.Floss hole 97 is arranged in order to the cooling effectiveness improving ultrasound probe 600.In more detail, first ring shape area 601A and the second annulus region 601B form a part for framework 601, formed outer wall 30 " " ' a part.

Figure 30 is the F-F profile of Figure 29, is the major axis profile of ultrasound probe 600.Shown in Figure 30, framework 601 receive and keep electronic component unit 92 and be connected with electronic component unit 92 coaxial cable 10 " " '.Coaxial cable 10 " " ' be arranged on probe cable 110 " " ' inside.Flexible cable 94 " " ' electronic component unit 92 is connected to layered transducer elements 120.Outer wall 30 " " ' from away from the part of layered transducer elements 120 extended to probe cable 110 " " ' lateral parts.That is, outer wall 30 " " ' do not contact layered transducer elements 120.The covering of inner side and inwall 40 " " ' be configured in outer wall 30 " " ' inner side, be arranged between outer wall 30 " " ' and electronic component unit 92.Inwall 40 " " ' along major axis from the aft section of layered transducer elements 120 extended to probe cable 110 " " ' lateral parts.

Inwall 40 " " ' and outer wall 30 " " ' jointly formed cavity and medium flow space 50 " " '.That is, by the space of inwall 40 " " ' and outer wall 30 " " ' surround form medium flow space 50 " " '.As described above, due to outer wall 30 " " ' away from layered transducer elements 120, so medium flow space 50 " " ' do not contact layered transducer elements 120.Like this, ultrasound probe 600 has floss hole 97 between medium flow space 50 " " ' and layered transducer elements 120.

Medium flow space 50 " " ' in be filled with the heat-transfer fluid of heat produced from electronic component unit 92, layered transducer elements 120 for conduction.In order to conduction of heat, at random use the phase transformation of heat-transfer fluid.Usually, from the heat that electronic component unit 92, layered transducer elements 120 produce, via inwall 40 " " ' be transmitted to outer wall 30 " " '.Inwall 40 " " ' at least formed than the material of the thermal conduction characteristic of outer wall 30 " " ' high by having, so as to make thermal capacitance easily to heat-transfer fluid conduction not to outer wall 30 " " ' outer surface conduction.Such as, inwall 40 " " ' formed by plastics, aluminum, carbon/aluminum, copper, graphite or other known heat-conducting substance, also can be formed by their combination in any.Medium flow space 50 " " ' extended along the major axis of ultrasound probe 600, receives and keeps above-mentioned heat-transfer fluid.Therefore, from the major part of the heat of electronic component unit 92, layered transducer elements 120 in arrival outer wall 30 " " ' absorbed by heat-transfer fluid before.In ultrasound probe 600, heat-transfer fluid uni-directionally moves from suction/outlet 72 to suction/discharge side space 52, and absorbed heat externally discharges via floss hole 97.In addition, the flow direction of above-mentioned heat-transfer fluid also can be different direction.

Figure 31 is the B-B profile of Figure 29, is the major axis profile of ultrasound probe 600.In addition, not shown partition wall 90A " " in Figure 31 ' and 90B " " ' inwall 40 " " ' with outer wall 30 " " ' separated.

Partition wall 90A " " ' and 90B " " ' and inwall 40 " " ' and outer wall 30 " " ' both is connected.Partition wall 90A " " ' and 90B " " ' are medium flow space 50 " " ' be divided at least two parts.Partition wall 90A " " ' and 90B " " ' is along major axis from putting the extended lateral parts to probe cable 110 near layered transducer elements 120.Due to medium flow space 50 " " ' extended along the major axis of ultrasound probe 600, so each medium flow space 50 " " after segmentation ' also extended along major axis.

Shown in Figure 31, partition wall 90A " " ' and 90B " " ' from coaxial cable 10 " " ' lateral parts extended to medium flow space 50 " " ' previous section. utilize partition wall 90A " " ' and 90B " " ' medium flow space 50 " " ' be divided into space, suction side 50A " " ' with discharge side space 60A " " '.Space, suction side 50A " " ' in heat-transfer fluid and discharge side space 60A " " ' in heat-transfer fluid between conduction of heat carry out via floss hole 97.In other words, the heat absorbed by heat-transfer fluid externally discharges via floss hole 97.

Floss hole 97 can be formed with arbitrary shape as required.Such as, floss hole 97 can be open to outside, also can to Exterior capsule.When heat-transfer fluid is air, floss hole 97 can be open to outside as described above.And heat-transfer fluid is when being gas, liquid or other composite material beyond air, floss hole 97 can to Exterior capsule to be stored in heat-transfer fluid in ultrasound probe 600.Or this airtight floss hole also can be the heat carrier region or fin that arrange on the outer wall section do not contacted with detected body, user.The floss hole be blocked on outer wall is used as cooling mechanism further.And the size of floss hole 97, shape and position can at random be arranged.

Above-mentioned floss hole 97 also goes for according in any one in the ultrasound probe of embodiment 1,2,3,4 and 5.Resemble when carrying multilamellar cooling structure the ultrasound probe according to embodiment 4, such as only floss hole 97 can be set on outer wall.In addition, when the ultrasound probe according to embodiment 4, also such as floss hole 97 can be set on multiple inwall.Certainly, according in the ultrasound probe of embodiment 4, also floss hole 97 can be all set on outer wall and inwall.

As above-mentioned explanation, ultrasound probe 600 is at outer wall 30 " " ' above have floss hole 97.Floss hole 97 can be open to outside, also can to Exterior capsule.The heat that medium flow space 50 " " ' interior heat-transfer fluid absorbs externally discharges via floss hole 97.Therefore, ultrasound probe 600 can make to cool from the heat of electronic component unit 92, layered transducer elements 120 efficiently.

(variation)

The above-mentioned ultrasound probe according to embodiment 1,2,3,4,5 and 6, is set to the heat-transfer fluid by flowing through the medium flow space surrounded around delivery in hot weather source of students, the heat from electronic component unit, layered transducer elements is cooled.According to the ultrasound probe of variation, make to cool from the heat of electronic component unit, layered transducer elements by other mechanism.

As according to the ultrasound probe of embodiment 1 ~ 6, because the delivery in hot weather source of students of electronic component unit, layered transducer elements and so on is surrounded by gap in framework, so in order to improve the cooling effectiveness in ultrasound probe, the thermal coupling structure comprised in the gap also can be set.Thermal coupling structure also can be heat pipe, TEC (thermoelectric (al) cooler), directly contact with thermal compound, the combination of thermal diffusion material (such as, copper or aluminum, carbon/aluminum, phase change material, heat conductivity liquid).Certainly, when delivery in hot weather source of students is immersed heat conductivity liquid, electrically, delivery in hot weather source of students is set independently.Such as, shown in Fig. 2 B and Fig. 4 B, in gap 92A, 92B, 92C of being arranged in around electronic component unit or the gap arranged in the rear portion side of layered transducer elements 120, be provided with thermal coupling structure.Similarly, in Fig. 7 B, 9B, 12B, 14,19,20,24 and 30, gap is represented with the Reference numeral of correspondence.

Thus, ultrasound probe according to the present embodiment can make the heat produced from thermal source cool efficiently.

Although the description of several embodiment, but these embodiments only propose as an example, are not used for limiting scope of the present invention.In fact, these new method and systems can be implemented with other various forms, and, in the scope of central scope not departing from invention, can various omission, replacement, change be carried out.These forms and distortion thereof are included in scope of invention and central scope, and be included in claims record invention and equivalent scope in.

Claims

1. a ultrasound probe, is characterized in that, comprising:

Produce the delivery in hot weather source of students of heat;

Be arranged on the outer wall of the surrounding of above-mentioned delivery in hot weather source of students; And

Be arranged on the inwall between above-mentioned outer wall and above-mentioned delivery in hot weather source of students,

In the flowing space surrounded by above-mentioned outer wall and above-mentioned inwall, harvesting has the heat-conduction medium of the heat produced from above-mentioned delivery in hot weather source of students for conduction,

Described ultrasound probe also comprises partition wall, and this partition wall is arranged on and is all connected between above-mentioned outer wall and above-mentioned inwall, with both above-mentioned outer wall and above-mentioned inwall and is used for being formed the stream of above-mentioned heat-conduction medium in the above-mentioned flowing space.

2. ultrasound probe as claimed in claim 1, is characterized in that:

There is the multiple above-mentioned inwall for forming multiple partial-flow space in the above-mentioned flowing space.

3. ultrasound probe as claimed in claim 2, is characterized in that:

Comprise multiple above-mentioned partition wall,

Each of above-mentioned multiple partition wall is arranged between the hithermost inwall in above-mentioned outer wall and above-mentioned multiple inwall, be connected with above-mentioned outer wall and above-mentioned hithermost both inwalls, to form at least one stream of above-mentioned heat-conduction medium at least one the partial-flow space in above-mentioned multiple partial-flow space.

4. ultrasound probe as claimed in claim 1, is characterized in that:

Above-mentioned delivery in hot weather source of students comprises at least one party in the layered transducer elements and electronic circuit comprising multiple oscillator.

5. ultrasound probe as claimed in claim 1, is characterized in that:

Above-mentioned outer wall have for the Thermal release in above-mentioned heat-conduction medium to above-mentioned ultrasound probe outside, to the airtight floss hole of said external.

6. ultrasound probe as claimed in claim 1, is characterized in that:

Above-mentioned outer wall has for outside, the floss hole of to said external open of the Thermal release in above-mentioned heat-conduction medium to above-mentioned ultrasound probe.

7. the ultrasound probe as described in claim 1 or 3, is characterized in that:

Above-mentioned stream has suction passage and discharge duct.

8. ultrasound probe as claimed in claim 7, characterized by further comprising:

Be arranged at the suction inlet of above-mentioned suction passage; With

Be arranged at the outlet of above-mentioned discharge duct.

9. ultrasound probe as claimed in claim 8, characterized by further comprising:

Be used for the circulation portions promoting that above-mentioned heat-conduction medium circulates from above-mentioned suction passage to above-mentioned discharge duct.

10. the ultrasound probe as described in claim 1 or 3, characterized by further comprising:

Be used for the circulation portions of circulation of the above-mentioned heat-conduction medium promoted in above-mentioned stream.

11. ultrasound probes as claimed in claim 1, is characterized in that:

Above-mentioned inwall is formed by the material that the pyroconductivity of the material of the above-mentioned outer wall of thermal conductivity ratio is high.

12. ultrasound probes as claimed in claim 1, characterized by further comprising:

Be arranged on the fin on above-mentioned inwall.

13. ultrasound probes as claimed in claim 1, characterized by further comprising:

Be arranged on the thermal coupling structure in the gap of above-mentioned inwall and above-mentioned delivery in hot weather source of students.

14. ultrasound probes as claimed in claim 2, characterized by further comprising:

Be arranged on the multiple fin at least one inwall in above-mentioned multiple inwall.

15. ultrasound probes as claimed in claim 2, characterized by further comprising:

Be arranged on the thermal coupling structure be configured in the inwall of inner side and the gap of above-mentioned delivery in hot weather source of students in above-mentioned multiple inwall.

16. 1 kinds of ultrasound probes, is characterized in that comprising:

Comprise the layered transducer elements of multiple oscillator;

Be arranged on the outer wall of the surrounding of above-mentioned layered transducer elements;

Be arranged on the inwall between above-mentioned outer wall and above-mentioned layered transducer elements;

Be used for conducting the heat-conduction medium of the heat produced from above-mentioned layered transducer elements in the flowing space surrounded by above-mentioned outer wall and above-mentioned inwall; And

Be arranged on the paired partition wall between above-mentioned outer wall and above-mentioned inwall, this paired partition wall is all connected to form the single stream of above-mentioned heat-conduction medium in the above-mentioned flowing space with both above-mentioned outer wall and above-mentioned inwall, and above-mentioned stream is formed by the space of opening with the side, rear portion being arranged on above-mentioned layered transducer elements.