CN102379686B - Limited channel control circuit for minimally invasive intervention intraductal multi-channel electrical signals - Google Patents
Limited channel control circuit for minimally invasive intervention intraductal multi-channel electrical signals Download PDFInfo
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- CN102379686B CN102379686B CN 201110243782 CN201110243782A CN102379686B CN 102379686 B CN102379686 B CN 102379686B CN 201110243782 CN201110243782 CN 201110243782 CN 201110243782 A CN201110243782 A CN 201110243782A CN 102379686 B CN102379686 B CN 102379686B
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Abstract
The invention relates to a limited channel control circuit for minimally invasive intervention intraductal multi-channel electrical signals, which is used for the medical field of minimally invasive intervention and comprises a control unit, a power cord, a ground wire and a communication wire. The power cord, the ground wire and the communication wire are respectively connected with a miniature chip in the control unit, the control unit further comprises a set of drivers connected in parallel, one end of each driver is connected with the power cord, and the other end of each driver is connected with the miniature chip. The limited channel control circuit has the advantages that number of wires needed by the far-end multi-driver and multi-sensing function for a duct can be reduced greatly, miniature of the duct is benefited, sufficient degree of freedom is supplied for completing complex intervention operations, data channels are supplied for surgical safety and acquisition of multiple physiological parameters in blood vessel and blood environment, and technical support is provided for functions of electrode ablation and the like requiring voltage induced into a human body.
Description
Technical field
The present invention relates to the limited channel control circuit of multi-channel electric signal in a kind of Wicresoft interposing catheter, for Wicresoft's interventional medicine field.
Background technology
Wicresoft's intervene operation is little with its wound, lose blood less and recover the plurality of advantages such as fast is widely used in clinical in the world.Conduit is as its most basic instrument, and far-end still lacks degree of freedom flexibly, at the inside of human body operating difficulties.Therefore, having initiatively, the conduit of choice direction function becomes the focus that various countries pay close attention to.
The conduit of present clinical use only have the electrode ablation conduit within it section steel wire cable be housed operate the selection of conduit travel direction as driver, but owing to adopting mechanical system to realize driving, further miniaturization.Intellectual material take marmem (SMA) and ion exchange polymer/metallic material (IPMC) as representative adopts the mode of electricity to realize driving, and has significant advantage and good application prospect aspect miniaturization.But in order to obtain sufficient degree of freedom, must need a plurality of drivers are carried out independent driving, increase and sharply increase along with degree of freedom with regard to the quantity that causes electric lead like this.But conduit has very strict restriction for small size, does not therefore allow number of conductors excessively to increase.In addition, in intervention procedure, the doctor need to detect the multi-signal in human body, such as temperature, pressure and flow etc., these transducing signals are many to be transformed at distal end of catheter, spreads out of externally by electric lead with the form of the signal of telecommunication, has further increased the quantity of wire.For some specific functions in Wicresoft's intervene operation, such as the electrophysiologicalcatheter catheter far-end has a plurality of mapping electrodes, and the electrode ablation distal end of catheter has a plurality of mappings and ablating electrode, different voltage need to be introduced human body, the problem of also having brought number of conductors to increase.The number of conductors problem has become this product of Wicresoft's interposing catheter and has moved towards microminiaturization, multiple degrees of freedom and the significant obstacle of many sensing directions.
Summary of the invention
Bring electric lead quantity to increase severely in order to overcome Wicresoft's interposing catheter multiple degrees of freedom and many sensing functions, thereby can't satisfy microminiaturized requirement, the invention provides method and the device of introducing multi-channel electric signal in a kind of Wicresoft interposing catheter, can use the electric lead of limited quantity to power as multiplex driver, obtain the multichannel heat transfer agent and plurality of voltages is introduced human body.
The technical scheme that the present invention adopts for achieving the above object is: the limited channel control circuit of multi-channel electric signal in a kind of Wicresoft interposing catheter, it is characterized in that, comprise one group of control unit and power line, ground wire, the order wire introduced from the outside, power line, ground wire, order wire are connected with microchip in control unit respectively, and described control unit also comprises one group of driver that is connected in parallel; One end connecting power line of described each driver, the other end is connected with microchip.
Described microchip comprises a state machine and the metal-oxide-semiconductor identical with number of drives that limited State-output is provided; The drain electrode of described metal-oxide-semiconductor connects one to one with described driver respectively, and source class is connected with described ground wire, and grid is connected with the outfan of described state machine respectively; The input of described state machine is connected with order wire, and power and ground provides voltage for described state machine.
Described order wire pin input has the packet that is made of command header, chip address, on off state and order tail.
State machine in described microchip is decoded to the sequence signal of order wire input, controls the open and close of metal-oxide-semiconductor, and specific passage is selected, and power supply is introduced or sensor signal is drawn.
The limited channel control circuit of multi-channel electric signal in a kind of Wicresoft interposing catheter, it is characterized in that, comprise one group of control unit and power line, ground wire, the order wire introduced from the outside, power line, ground wire, order wire are connected with microchip in control unit respectively, and described control unit also comprises one group of driver that is connected in parallel; One end of described each driver connects ground wire, and the other end is connected with microchip.
Described microchip comprises that one provides the state machine of limited State-output, metal-oxide-semiconductor, the power management module identical with number of drives; The drain electrode of described metal-oxide-semiconductor is connected with described power management module, and source class connects one to one with described driver respectively, and grid is connected with the outfan of described state machine respectively; The input of described state machine is connected with order wire, and power and ground provides voltage for described state machine; The voltage transitions that described power management module provides power line becomes the dissimilar voltage of multichannel to offer metal-oxide-semiconductor.
Described order wire pin input has the packet that is made of command header, chip address, on off state and order tail.
State machine in described microchip is decoded to the sequence signal of order wire input, controls the open and close of metal-oxide-semiconductor, and specific passage is selected, and power supply is introduced or sensor signal is drawn.
The limited channel control circuit of multi-channel electric signal in a kind of Wicresoft interposing catheter, it is characterized in that, comprise one group of control unit and power line, ground wire, order wire and the data acquisition line concentration introduced from the outside, power line, ground wire, order wire and data acquisition line concentration are connected with microchip in control unit and are connected, and described control unit also comprises one group of sensor; Each sensor is connected with microchip, provides voltage by power and ground.
Described microchip comprises a state machine and the metal-oxide-semiconductor identical with number of drives that limited State-output is provided; The drain electrode of described metal-oxide-semiconductor connects one to one with described sensor respectively, and source class is connected with described data acquisition line concentration, and grid is connected with the outfan of described state machine respectively; The input of described state machine is connected with order wire, and power and ground provides voltage for described state machine.
Described order wire pin input has the packet that is made of command header, chip address, on off state and order tail.
State machine in described microchip is decoded to the sequence signal of order wire input, controls the open and close of metal-oxide-semiconductor, and specific passage is selected, and power supply is introduced or sensor signal is drawn.
The limited channel control circuit of multi-channel electric signal in a kind of Wicresoft interposing catheter, it is characterized in that, comprise one group of control unit and power line, ground wire, the order wire introduced from the outside, power line, ground wire, order wire are connected with microchip in control unit respectively, and described control unit also comprises one group of electrode; Described each electrode is connected on microchip.
Described microchip comprises a state machine and the metal-oxide-semiconductor identical with number of drives that limited State-output is provided; The drain electrode of described metal-oxide-semiconductor is connected with described power line, and source class connects one to one with described electrode respectively, and grid is connected with the outfan of described state machine respectively; The input of described state machine is connected with order wire, and power and ground provides voltage for described state machine.
Described order wire pin input has the packet that is made of command header, chip address, on off state and order tail.
State machine in described microchip is decoded to the sequence signal of order wire input, controls the open and close of metal-oxide-semiconductor, and specific passage is selected, and power supply is introduced or sensor signal is drawn.
The invention has the beneficial effects as follows, can significantly reduce the many drivings of distal end of catheter and the desired number of conductors of many sensing functions, be conducive to the microminaturization of conduit, thereby provide sufficient degree of freedom for completing complicated intervene operation, for the collection of multiple physiological parameter in the safety of operation and blood vessel and blood environment provides data channel, the function that also has voltage to introduce human body requirements for electrode ablation and so on provides technical support.
Description of drawings
Fig. 1 is the schematic diagram of the embodiment of the present invention 1;
Fig. 2 is microchip cut-away view in Fig. 1;
Fig. 3 is the schematic diagram of the embodiment of the present invention 2;
Fig. 4 is microchip cut-away view in Fig. 3;
Fig. 5 is the schematic diagram of the embodiment of the present invention 3;
Fig. 6 is microchip cut-away view in Fig. 5;
Fig. 7 is the schematic diagram of the embodiment of the present invention 4;
Fig. 8 is microchip cut-away view in Fig. 7;
Fig. 9 is that the communication protocol of Vs end of the present invention consists of schematic diagram.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Embodiment 1:
As shown in Figure 1, comprise power line Vcc, ground wire GND, order wire Vs, a M*N driver B and N the microchip A that introduces from the outside.The end of the M of every string driver B is connected with power line Vcc respectively, and the other end of N row driver B is connected with each self-corresponding microchip A respectively, and N microchip A is connected with external power cord Vcc, ground wire GND, order wire Vs respectively.
As shown in Figure 2, microchip A inside comprises state machine E and M the metal-oxide-semiconductor S that limited State-output is provided.State machine D provides voltage by external power cord Vcc and ground wire GND for it; The outfan of state machine D is connected respectively with the grid of M metal-oxide-semiconductor S; The input of state machine D is connected with order wire Vs.The drain electrode of metal-oxide-semiconductor S is connected respectively with the M of every row driver B; The source electrode of metal-oxide-semiconductor S is connected respectively with ground wire GND.State machine D decodes to the sequence signal of order wire Vs input, thereby controls opening or closure of M metal-oxide-semiconductor S, thereby realizes M driver B applied voltage.
Vcc is external power cord, for the inside micro chip provides voltage, is simultaneously the driver power supply; GND is outside ground wire; Vs is order wire, is responsible for selecting microchip A and transfer control instruction.Universal meaning, the quantity of driver B can be divided into the capable N row of M, and the driver B of every string connects a microchip A.The end of the M of every string driver B is connected with external power source Vcc, and the other end is controlled break-make by a microchip A.
As shown in Figure 7, the communication of the present embodiment distal end of catheter inside is controlled by order wire Vs pin input packet.Described packet is made of successively command header, chip address, on off state and order tail.Command header provides the order indication to microchip, and chip address represents that order acts on specific microchip, and on off state provides operational order for selected microchip, controls opening or closure of inner metal-oxide-semiconductor S.
Embodiment 2:
As shown in Figure 3, the present embodiment comprises power line Vcc, ground wire GND, order wire Vs, a M*N driver B and N microchip of introducing from the outside, the end of the M of every string driver B is connected with outside ground wire GND, the other end of the N row driver B microchip A corresponding with each respectively is connected, whether N microchip A is connected with external power cord Vcc respectively, control each driver B by microchip A and be connected with external power cord Vcc.
As shown in Figure 4, microchip A inside comprises state machine D, power management module E and M the metal-oxide-semiconductor S that limited State-output is provided.Power management module E changes into the dissimilar voltage of multichannel with external power cord Vcc, offers M driver B.The drain electrode of M metal-oxide-semiconductor S is corresponding connected one by one with M the voltage output end of power management module E; The source class of M metal-oxide-semiconductor S is connected with the end of corresponding each driver B; The ground level of M metal-oxide-semiconductor S is connected with state machine D.State machine D provides voltage by external power cord Vcc and ground wire GND for it.The input of state machine D is connected with order wire Vs.By state machine D, the sequence signal of order wire Vs end input is decoded, thereby control opening or the Voltage-output situation of closure and power management module E of M metal-oxide-semiconductor S, thereby realization applies voltage to M driver B.
In Fig. 3 and Fig. 4: Vcc is external power source, and A provides voltage for the inside micro chip, is simultaneously driver B power supply; GND is outside ground wire; Vs is order wire, is responsible for selecting microchip A and transfer control instruction.In this example, the quantity of driver B is the capable N of M row, need to pack into the joint C of an integrated micro chip A of the driver B of every string.The communication of this routine distal end of catheter inside is controlled by order wire Vs pin input packet, and is identical with embodiment 1 structure.
Embodiment 3:
As shown in Figure 5 and Figure 6, this example comprises external power cord Vcc, ground wire GND, order wire Vs, data acquisition line concentration Va, microchip and N sensor R.Described microchip A inside comprises state machine D and N metal-oxide-semiconductor S of a finite state output, state machine D input be connected with order wire Vs, its outfan is connected with the grid of N metal-oxide-semiconductor S, the drain electrode of N metal-oxide-semiconductor S is connected respectively with the outfan of N sensor R, the source electrode of metal-oxide-semiconductor S is connected with data acquisition line concentration Va, and the transducing signal of distal end of catheter is sent to catheter proximal end.By state machine D, the sequence signal of Vs end input is decoded, thus the selection of control multiple sensor R.
Wherein: Vcc is external power source, for inside micro chip and sensor provide voltage, is the driver power supply simultaneously; GND is outside ground wire; Vs is order wire, is responsible for selecting sensor; Va is the data acquisition line concentration, is responsible for the transducing signal of distal end of catheter is sent to catheter proximal end.The communication of this routine distal end of catheter inside is controlled by order wire Vs pin input packet, and is identical with embodiment 1 structure.
Embodiment 4:
As shown in Figure 7 and Figure 8, the present embodiment comprises external power cord Vcc, ground wire GND, order wire Vs, microchip A and N electrode J, described microchip A inside comprises state machine D and N metal-oxide-semiconductor S of a finite state output, the input of described state machine D is connected respectively with order wire Vs, its outfan is connected respectively with the base stage of N metal-oxide-semiconductor S, the colelctor electrode of N metal-oxide-semiconductor S is connected respectively with external power cord Vcc, and the emitting stage of metal-oxide-semiconductor S is connected respectively with N electrode.By state machine D, the sequence signal of order wire Vs end input is decoded, thereby control, voltage is released on selected electrode.
Wherein: Vcc is external power source, for inside micro chip A and sensor R provide voltage, is driver B power supply simultaneously; GND is outside ground wire; Vs is order wire, is responsible for selecting sensor; Va is the data acquisition line concentration, is responsible for the transducing signal of distal end of catheter is sent to catheter proximal end.The communication of this routine distal end of catheter inside is controlled by order wire Vs pin input packet, and is identical with embodiment 1 structure.
In four embodiment of the present invention, the number of M and N is thought setting, quantity optionally and arranging, and namely by the size of conduit, the size of driver, sensor and electrode and quantity, chip sizes etc. are comprehensively determined but are subject to the restriction in space.Generally, M and N all are not more than 100.
Claims (11)
1. the limited channel control circuit of multi-channel electric signal in Wicresoft's interposing catheter, it is characterized in that, comprise one group of control unit and power line, ground wire, the order wire introduced from the outside, power line, ground wire, order wire are connected with microchip in control unit respectively, and each control unit also comprises one group of driver that is connected in parallel; One end connecting power line of described each driver, the other end is connected with microchip.
2. the limited channel control circuit of the interior multi-channel electric signal of Wicresoft's interposing catheter according to claim 1, is characterized in that, described microchip comprises a state machine and the metal-oxide-semiconductor identical with number of drives that limited State-output is provided; The drain electrode of described metal-oxide-semiconductor connects one to one with described driver respectively, and source class is connected with described ground wire, and grid is connected with the outfan of described state machine respectively; The input of described state machine is connected with order wire, and power and ground provides voltage for described state machine.
3. the limited channel control circuit of multi-channel electric signal in Wicresoft's interposing catheter, it is characterized in that, comprise one group of control unit and power line, ground wire, the order wire introduced from the outside, power line, ground wire, order wire are connected with microchip in control unit respectively, and each control unit also comprises one group of driver that is connected in parallel; One end of described each driver connects ground wire, and the other end is connected with microchip.
4. the limited channel control circuit of multi-channel electric signal in Wicresoft according to claim 3 interposing catheter, it is characterized in that, described microchip comprises that one provides the state machine of limited State-output, metal-oxide-semiconductor, the power management module identical with number of drives; The drain electrode of described metal-oxide-semiconductor is connected with described power management module, and source class connects one to one with described driver respectively, and grid is connected with the outfan of described state machine respectively; The input of described state machine is connected with order wire, and power and ground provides voltage for described state machine; The voltage transitions that described power management module provides power line becomes the dissimilar voltage of multichannel to offer metal-oxide-semiconductor.
5. the limited channel control circuit of multi-channel electric signal in Wicresoft's interposing catheter, it is characterized in that, comprise one group of control unit and power line, ground wire, order wire and the data acquisition line concentration introduced from the outside, power line, ground wire, order wire and data acquisition line concentration are connected with microchip in control unit and are connected, and each control unit also comprises one group of sensor; Each sensor is connected with microchip, provides voltage by power and ground.
6. the limited channel control circuit of the interior multi-channel electric signal of Wicresoft's interposing catheter according to claim 5, is characterized in that, described microchip comprises a state machine and the metal-oxide-semiconductor identical with number of sensors that limited State-output is provided; The drain electrode of described metal-oxide-semiconductor connects one to one with described sensor respectively, and source class is connected with described data acquisition line concentration, and grid is connected with the outfan of described state machine respectively; The input of described state machine is connected with order wire, and power and ground provides voltage for described state machine.
7. the limited channel control circuit of multi-channel electric signal in Wicresoft's interposing catheter, it is characterized in that, comprise one group of control unit and power line, ground wire, the order wire introduced from the outside, power line, ground wire, order wire are connected with microchip in control unit respectively, and each control unit also comprises one group of electrode; Described each electrode is connected on microchip.
8. the limited channel control circuit of the interior multi-channel electric signal of Wicresoft's interposing catheter according to claim 7, is characterized in that, described microchip comprises a state machine and the metal-oxide-semiconductor identical with number of electrodes that limited State-output is provided; The drain electrode of described metal-oxide-semiconductor is connected with described power line, and source class connects one to one with described electrode respectively, and grid is connected with the outfan of described state machine respectively; The input of described state machine is connected with order wire, and power and ground provides voltage for described state machine.
9. according to claim 1, the limited channel control circuit of multi-channel electric signal in 3,5 or 7 described Wicresoft interposing catheters, it is characterized in that, described order wire pin input has the packet that is made of command header, chip address, on off state and order tail.
10. the limited channel control circuit of multi-channel electric signal according to claim 2,4 or 8 described Wicresoft interposing catheters, it is characterized in that, state machine in described microchip is decoded to the sequence signal of order wire input, control the open and close of metal-oxide-semiconductor, specific passage is selected, power supply is introduced.
11. the limited channel control circuit of multi-channel electric signal in Wicresoft according to claim 6 interposing catheter, it is characterized in that, state machine in described microchip is decoded to the sequence signal of order wire input, control the open and close of metal-oxide-semiconductor, specific passage is selected, sensor signal is drawn.
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| CN1788675A (en) * | 2004-12-15 | 2006-06-21 | 日东电工株式会社 | Catheter and production method thereof |
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| WO2007081842A2 (en) * | 2006-01-09 | 2007-07-19 | University Of Virginia Patent Foundation | Multi-port catheter system with medium control and measurement systems for therapy and diagnosis delivery |
| US20080190438A1 (en) * | 2007-02-08 | 2008-08-14 | Doron Harlev | Impedance registration and catheter tracking |
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