CN207250180U

CN207250180U - A kind of low capacitance ultrasonic image cable

Info

Publication number: CN207250180U
Application number: CN201721299944.9U
Authority: CN
Inventors: 张伟; 许高华
Original assignee: Three Yuan Technology (shenzhen) Co Ltd
Current assignee: Three Yuan Technology (shenzhen) Co Ltd
Priority date: 2017-10-10
Filing date: 2017-10-10
Publication date: 2018-04-17
Anticipated expiration: 2027-10-10

Abstract

A kind of low capacitance ultrasonic image cable is the utility model is related to, including：Low capacitance miniature diameter coaxial cable, filling line, PTFE tape, woven shield, restrictive coating, the low capacitance miniature diameter coaxial cable include：Plain conductor, insulating layer, winding shielded layer, coaxial restrictive coating, the insulating layer are socketed in outside the plain conductor, and outside the insulating layer, the coaxial restrictive coating is socketed in winding shielding and takes the winding shielding band.The advantages of the utility model is：The capacitance stability contorting of cable reduces in 50PF/M, the quality higher of cable signal, and cable dimension and quality, and equipment cost is than relatively low.

Description

A kind of low capacitance ultrasonic image cable

Technical field

A kind of signal cable is the utility model is related to, more particularly to a kind of low capacitance ultrasonic image cable.

Background technology

Ultrasonic image cable, commonly used in being transmitted to the reflected signal between ultrasonic probe and control circuit, due to The echo voltage that ultrasonic probe is reflected back is very low, and signal becomes larger by the loss of cable, influences signal quality.But if electricity The capacitance of cable is lower, better therewith by the signal quality of cable transmission.

The method that low capacity symmetrical cable technology generally uses extrusion foaming polytetrafluoroethylene (PTFE) PFA at present, extrusion foaming polytetrafluoroethyl-ne Alkene PFA has two ways, and one kind is chemical blowing method, and foaming materials degree is very low, and dielectric constant does not reach required value；One kind is With physical blowing mode, equipment precision requirement is very high, and equipment vendor's selection face very little, equipment investment cost is very high, and capacitance is only It can stablize in 60PF/M or so, customer requirement can be exceeded by completing outside diameter.

Utility model content

In view of the above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of low capacitance ultrasonic image Cable, capacitance can not only be reduced and stablized in 50PF/M, improve the quality of cable signal, and can meet cable in size and More light compact requirement, use are more flexible in weight.

In order to solve the above-mentioned technical problem, the utility model is to be achieved through the following technical solutions：

A kind of low capacitance ultrasonic image cable, including：Low capacitance miniature diameter coaxial cable, filling line, PTFE tape, braid shielded Layer, restrictive coating, the low capacitance miniature diameter coaxial cable and the filling line assemble rounding shape harness, the PTFE tape around Outside rounding shape harness, the woven shield is socketed in outside the PTFE tape, and the restrictive coating is socketed in the braiding Outside shielded layer, the low capacitance miniature diameter coaxial cable includes：Plain conductor, insulating layer, winding shielded layer, coaxial restrictive coating, institute State insulating layer to be socketed in outside the plain conductor, the winding shielding band is outside the insulating layer, the same to sheath shaft Layer is socketed in the winding shielding and takes.

The plain conductor is to be twisted silver-plated alloyed copper wire.

The insulating layer uses the expanded PTFE ePTFE of high-temperature resistant low dielectric coefficient.

The shielding wire of the winding shielding band is tin plating alloyed copper or silver-plated alloy copper wire.

The coaxial restrictive coating uses medical grade polyvinylchloride or thermoplastic polyurethane TPU.

The PTFE is polytetrafluoroethylene tape, and surface is smooth, homogeneous, has excellent heat resistance, corrosion resistance, and And there are tack, good fit and containment.

Compared with prior art, it is the advantages of the utility model：The capacitance stability contorting of cable is in 50PF/M, cable signal Quality higher, and cable dimension and quality reduce, and equipment cost is than relatively low.

Brief description of the drawings

Fig. 1 is the structure diagram of the utility model

Fig. 2 is the Section A-A figure of the utility model Fig. 1

Fig. 3 is the schematic enlarged-scale view of low capacitance miniature diameter coaxial cable 1 in Fig. 2

Embodiment

In order to which the technical problem, technical solution and the beneficial effect that are solved the utility model are more clearly understood, below In conjunction with the embodiments, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only To explain the utility model, it is not used to limit the utility model.

A kind of low capacitance ultrasonic image cable, including：Low capacitance miniature diameter coaxial cable 1, filling line 2, PTFE tape 3, braiding screen Cover layer 4, restrictive coating 5.

As shown in Figure 1, 2, the utility model includes：Multiple low capacitance miniature diameter coaxial cables 1, a filling line 2, a PTFE Band 3, a woven shield 4, a restrictive coating 5, the multiple low capacitance miniature diameter coaxial cable 1 and the filling line 2 assemble Rounding shape harness, for the PTFE tape 3 around assembling outside rounding shape harness, the woven shield 4 is socketed in institute State outside PTFE tape 3, the braided metal silk of the woven shield 4 is tinned wird or tin plating copper foil wire, the restrictive coating 5 It is socketed in outside the woven shield 4, the filling line 2 can require selection according to pull-off force and size：KEVLAR, fragrance Fypro etc..

The multiple low capacitance miniature diameter coaxial cable 1 is the multiple combinations of 16 groups to 256 groups single low capacitance miniature diameter coaxial cables.

The low capacitance miniature diameter coaxial cable includes：Plain conductor 101, insulating layer 102, winding shielded layer 103, same to sheath shaft Layer 104.

As shown in figure 3, the single low capacitance miniature diameter coaxial cable 1 includes：One plain conductor, 101, insulating layers 102nd, one winding the coaxial restrictive coating 104 of shielded layer 103, one, the insulating layer 102 be socketed in the plain conductor 101 it Outside, for the winding shielding band 103 outside the insulating layer 102, the coaxial restrictive coating 104 is socketed in winding shielding band On 103, which can conveniently select different colours using double-deck self-adhesion PET strip.

101 specification of plain conductor can be 46AWG to 36AWG various specifications, which is twisted silver-plated Alloyed copper wire.In other embodiments, silver-plated copper or tin plating alloyed copper wire be can also be, which uses fine pith The layer heart twists technique, and copper wire rounding size uniform is stablized.

The insulating layer 102 is insulated using the ePTFE of high-temperature resistant low dielectric coefficient, and ePTFE band lapped insulations have 1.3- 1.6 low-k；Using excellent technique, ensure that insulation has stable structure size, compared to PFA can by capacitance by 110PF/M is reduced to 50PF/M, capacitance can be reduced to 50PF/M by 60PF/M compared to expanded polytetrafluoroethyl(ne PFA.

The shielding wire of the winding shielding band 103 is tin plating alloyed copper or silver-plated alloy copper wire.

The coaxial restrictive coating 104 uses polyvinylchloride or thermoplastic polyurethane TPU, can meet ISO10993- The related requests such as 5/-10 biocompatibilities.

The total stranding of the utility model uses dedicated back twist technique, it is ensured that stranding rounding, size uniform.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, therefore, only This is should be included in all any modification, equivalent and improvement that the utility model specification and drawings content is made etc. Within the protection domain of utility model.

Claims

1. a kind of low capacitance ultrasonic image cable, including：Low capacitance miniature diameter coaxial cable, filling line, PTFE tape, woven shield, Restrictive coating, it is characterised in that the low capacitance miniature diameter coaxial cable and the filling line assemble rounding shape harness, the PTFE Outside rounding shape harness, the woven shield is socketed in outside the PTFE tape band, and the restrictive coating is socketed in Outside the woven shield.

2. low capacitance ultrasonic image cable according to claim 1, it is characterised in that the low capacitance miniature diameter coaxial cable bag Include：Plain conductor, insulating layer, winding shielded layer, coaxial restrictive coating, the insulating layer are socketed in outside the plain conductor, institute Winding shielding band is stated outside the insulating layer, the coaxial restrictive coating is socketed in the winding shielding and takes.

3. low capacitance ultrasonic image cable according to claim 2, it is characterised in that the plain conductor is twisted silver-plated Alloyed copper wire.

4. low capacitance ultrasonic image cable according to claim 2, it is characterised in that the insulating layer is low using high temperature resistant The ePTFE of dielectric coefficient.

5. low capacitance ultrasonic image cable according to claim 2, it is characterised in that the shielding gold of the winding shielding band It is tin plating alloyed copper or silver-plated alloy copper wire to belong to silk.

6. low capacitance ultrasonic image cable according to claim 2, it is characterised in that the coaxial restrictive coating is using medical treatment Level PVC or TPU.