CN105232141A - Medical catheter head end capable of measuring contact force - Google Patents
Medical catheter head end capable of measuring contact force Download PDFInfo
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- CN105232141A CN105232141A CN201510642085.8A CN201510642085A CN105232141A CN 105232141 A CN105232141 A CN 105232141A CN 201510642085 A CN201510642085 A CN 201510642085A CN 105232141 A CN105232141 A CN 105232141A
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- head end
- medical catheter
- catheter head
- piezoelectric ceramics
- pedestal
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Abstract
The invention provides a medical catheter head end capable of measuring contact force. The medical catheter head end comprises an electrode head and a force measuring device, a plurality of blind holes are formed in the electrode head, the force measuring device comprises a plurality of piezoelectric ceramic spring sensors, a base and a plurality of tail lines, and a plurality of through holes are formed in the base. A deformation member and sensors are combined and simplified to be in a two-in-one mode, so that assembly difficult and error are reduced, and accuracy of a force measuring head end is improved. Pressure when the catheter head end contacts with a heart or arterial tissue rich in sympathetic nerve is measured to ensure the pressure to be within a safe range so as to improve safety of high-radio-frequency ablation operation; during the ablation operation, ablation depth can be judged by measuring the pressure when the catheter head end contacts with the tissue, and reliable data support can be provided for doctors to select reasonable ablation power and time.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly relate to a kind of medical catheter head end surveying contact force.
Background technology
In medical interventions, radio frequency ablation catheter has had extensive use, and it is mainly used in the treatment of the diseases such as heart atrial fibrillation, arrhythmia, intractable hypertension.X-ray machine auxiliary under, radio frequency ablation catheter is inserted heart by blood vessel by puncturing on femoral artery or radial artery or is rich in orthosympathetic tremulous pulse by doctor, carries out radio-frequency (RF) ablation to lesions position.
Current this radio-frequency ablation procedure is completed by experienced doctor's manual operation, because staff is difficult to control the recline power of conduit head end to tissue accurately, so often have the complication of perforation and edema to occur in heart and artery ablation operation.
Therefore, the conduit having the complication of perforation and edema to occur can be reduced in the urgent need to a kind of in market.
Summary of the invention
For the defect of above-mentioned prior art, the invention provides a kind of medical catheter head end surveying contact force, the safety of radio-frequency ablation procedure can be improved, for doctor provides the force data support that reclines reliably.
For achieving the above object, the present invention adopts following technical scheme:
Survey a medical catheter head end for contact force, described medical catheter head end comprises electrode tip and device for measuring force; Described electrode tip is provided with some blind holes; Described device for measuring force comprises some piezoelectric ceramics spring sensors, pedestal, some buttock lines, and described pedestal is provided with some through holes; Wherein, the head end of each described piezoelectric ceramics spring sensor is corresponding respectively and be fixed in described blind hole; The tail end of each described piezoelectric ceramics spring sensor is corresponding respectively and be fixed on the described through hole of described pedestal, and is connected respectively on corresponding described buttock line by described through hole.
, described some buttock lines are positioned at the inside of described conduit supervisor in such scheme preferably, and described buttock line is connected with demodulated equipment through described conduit supervisor.
In such scheme preferably, described conduit supervisor is fixedly connected with described pedestal.
In such scheme preferably, described some piezoelectric ceramics spring sensors are radially placed between described electrode tip and described pedestal.
In such scheme preferably, described some piezoelectric ceramics spring sensors are uniformly distributed along the circumferencial direction of described conduit.
In such scheme preferably, the number of through-holes on described blind hole, piezoelectric ceramics spring sensor, buttock line and described pedestal is equal.
In such scheme preferably, the number of through-holes on described blind hole, piezoelectric ceramics spring sensor, buttock line and described pedestal is 3.
Deformable body and sensor combinations are reduced to two-in-one pattern by the present invention, thus reduce assembling difficulty and error, improve the precision of dynamometry head end.The present invention by measuring conductor housing end in contact heart or being rich in the pressure of orthosympathetic arterial tissue, to ensure in the scope of safety, to be used for improving the safety of radio-frequency ablation procedure; In ablative surgery, depth of ablation can be judged by the pressure measuring conduit head end and contact tissue, for doctor selects rational ablation power and time to provide reliable Data support.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation surveying the medical catheter head end of contact force of the present invention.
Fig. 2 is that a kind of medical catheter head end surveying contact force of the present invention is at supravasal installation site schematic diagram.
Fig. 3 is that a kind of medical catheter head end surveying contact force of the present invention is at supravasal base construction figure.
Detailed description of the invention
In prior art, the structure of measuring pressure conduit head end can need the device of a deformable body and some sensor combinations described in CN201420301029.9, the adnexa had more like this can cause measurement error bigger than normal.Eliminate this deformable body structure in the present invention, deformable body and sensor combinations are reduced to two-in-one pattern, thus reduce assembling difficulty and error, improve the precision of dynamometry head end.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
So-called head end, tail end are with pedestal 3 for reference, and near pedestal 3 is tail end, and opposite base 3 one end far away is head end.
The invention provides a kind of medical catheter head end surveying contact force, described head end comprises electrode tip, and is connected the device for measuring force for calculating the stressed size and Orientation of described electrode tip with described electrode tip.
Wherein, described device for measuring force comprises some piezoelectric ceramics spring sensors that deformation can occur according to stressed change, measures out the stressed size and Orientation of described electrode tip by the different distortion of some piezoelectric ceramics spring sensors.Described some piezoelectric ceramics spring sensors are radially placed between the electrode tip of medical catheter and pedestal, and described some piezoelectric ceramics spring sensors are uniformly distributed along the circumferencial direction of conduit.
Described piezoelectric ceramics spring sensor becomes spring-like.When the electrode tip of this medical catheter is stressed, described some piezoelectric ceramics spring sensor generation deformation, and produce the signal of telecommunication (can millivolt be accurate to), this signal of telecommunication is derived through its latter linked buttock line, carry out detection analytical calculation after the demodulated equipment that described buttock line connects obtains the described signal of telecommunication, finally draw the stressed size and Orientation of medical catheter head end.
Fig. 1 is a kind of structural representation surveying the medical catheter head end of contact force of the present invention.As shown in Figure 1, described medical catheter head end comprise electrode tip 1 and on electrode tip 1 arrange three blind holes (501,502,503) and device for measuring force, described device for measuring force comprises three piezoelectric ceramics spring sensors (201,202,203), pedestal 3, three buttock lines (401,402,403).
Fig. 3 is that a kind of medical catheter head end surveying contact force of the present invention is at supravasal base construction figure.Described pedestal 3 is arranged three through holes 601,602,603.
Wherein, one end of each described piezoelectric ceramics spring sensor 201,202,203 is corresponding respectively and be fixed in three described blind holes 501,502,503, the other end of each described piezoelectric ceramics spring sensor 201,202,203 is corresponding respectively and be fixed on described through hole 601,602,603, the distance of three the piezoelectric ceramics spring sensors 201,202,203 of adjustment between electrode tip 1 and pedestal 3, makes them be consistent.Buttock line 401,402,403 is connected at the tail end of each described piezoelectric ceramics spring sensor 201,202,203.
Fig. 2 is that a kind of medical catheter head end surveying contact force of the present invention is at supravasal installation site schematic diagram.As shown in Figure 2, three buttock lines 401,402,403 are connected to the near-end of conduit by conduit supervisor 5, be connected on demodulated equipment finally by conduit supervisor 5.Three buttock lines 401,402,403 are included by conduit supervisor 5, and head end and the pedestal 3 of conduit supervisor 5 are fixed together.
When electrode tip 1 is stressed, can deformation be there is in three piezoelectric ceramics spring sensors 201,202,203, the millivolt signal caused due to deformation will be delivered on demodulated equipment by three buttock lines 401,402,403, can obtain accurate stressed size and Orientation by the calculating of demodulated equipment.
In ablative surgery, medical catheter head end provided by the invention, by electrode tip is connected with device for measuring force, be applied on radio frequency ablation catheter, the force value can measured conductor housing end in contact heart or be rich in orthosympathetic arterial tissue is to judge depth of ablation, for doctor selects rational ablation power and time to provide reliable Data support, make it in the numerical range of safety by operation, be used for improving the safety of radio-frequency ablation procedure.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. can survey a medical catheter head end for contact force, it is characterized in that, described medical catheter head end comprises electrode tip and device for measuring force; Described electrode tip is provided with some blind holes;
Described device for measuring force comprises some piezoelectric ceramics spring sensors, pedestal, some buttock lines, and described pedestal is provided with some through holes;
Wherein,
The head end of each described piezoelectric ceramics spring sensor is corresponding respectively and be fixed in described blind hole;
The tail end of each described piezoelectric ceramics spring sensor is corresponding respectively and be fixed on the described through hole of described pedestal, and is connected respectively on corresponding described buttock line by described through hole.
2. medical catheter head end as claimed in claim 1, is characterized in that, described some buttock lines are positioned at the inside of described conduit supervisor, and described buttock line is connected with demodulated equipment through described conduit supervisor.
3. medical catheter head end as claimed in claim 1, is characterized in that, described conduit supervisor is fixedly connected with described pedestal.
4. medical catheter head end as claimed in claim 1, it is characterized in that, described some piezoelectric ceramics spring sensors are radially placed between described electrode tip and described pedestal.
5. medical catheter head end as claimed in claim 1, it is characterized in that, described some piezoelectric ceramics spring sensors are uniformly distributed along the circumferencial direction of described conduit.
6. medical catheter head end as claimed in claim 1, it is characterized in that, the number of through-holes on described blind hole, piezoelectric ceramics spring sensor, buttock line and described pedestal is equal.
7. medical catheter head end as claimed in claim 6, it is characterized in that, the number of through-holes on described blind hole, piezoelectric ceramics spring sensor, buttock line and described pedestal is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642085.8A CN105232141B (en) | 2015-09-30 | 2015-09-30 | A kind of medical catheter head end for surveying contact force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642085.8A CN105232141B (en) | 2015-09-30 | 2015-09-30 | A kind of medical catheter head end for surveying contact force |
Publications (2)
| Publication Number | Publication Date |
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| CN105232141A true CN105232141A (en) | 2016-01-13 |
| CN105232141B CN105232141B (en) | 2018-03-13 |
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| CN201510642085.8A Active CN105232141B (en) | 2015-09-30 | 2015-09-30 | A kind of medical catheter head end for surveying contact force |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106606373A (en) * | 2016-08-30 | 2017-05-03 | 四川锦江电子科技有限公司 | Ablation catheter capable of accurate pressure measurement |
| CN108601618A (en) * | 2016-01-29 | 2018-09-28 | 波士顿科学医学有限公司 | The power sensing tube of orientation with impedance guiding |
| CN110123444A (en) * | 2019-06-03 | 2019-08-16 | 江苏吉瑞达电子有限公司 | Medical belt pressure sensor radio frequency ablation catheter |
| CN117257438A (en) * | 2023-11-21 | 2023-12-22 | 梅奥心磁(杭州)医疗科技有限公司 | Dual-energy mapping ablation catheter |
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| CN205041520U (en) * | 2015-09-30 | 2016-02-24 | 乐普（北京）医疗器械股份有限公司 | Medical catheter head end of measurable contact force |
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2015
- 2015-09-30 CN CN201510642085.8A patent/CN105232141B/en active Active
Patent Citations (12)
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| US4977886A (en) * | 1989-02-08 | 1990-12-18 | Olympus Optical Co., Ltd. | Position controlling apparatus |
| US5807265A (en) * | 1996-01-09 | 1998-09-15 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Catheter having pressure detecting ability |
| US6287292B1 (en) * | 1996-04-18 | 2001-09-11 | Advanced Cardiovascular Systems, Inc. | Guidewire with a variable stiffness distal portion |
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| US20080294144A1 (en) * | 2007-05-24 | 2008-11-27 | Giovanni Leo | Touch Sensing Catheter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601618A (en) * | 2016-01-29 | 2018-09-28 | 波士顿科学医学有限公司 | The power sensing tube of orientation with impedance guiding |
| CN106606373A (en) * | 2016-08-30 | 2017-05-03 | 四川锦江电子科技有限公司 | Ablation catheter capable of accurate pressure measurement |
| CN106606373B (en) * | 2016-08-30 | 2019-02-12 | 四川锦江电子科技有限公司 | A kind of ablation catheter of accurate dynamometry |
| CN110123444A (en) * | 2019-06-03 | 2019-08-16 | 江苏吉瑞达电子有限公司 | Medical belt pressure sensor radio frequency ablation catheter |
| CN117257438A (en) * | 2023-11-21 | 2023-12-22 | 梅奥心磁(杭州)医疗科技有限公司 | Dual-energy mapping ablation catheter |
| CN117257438B (en) * | 2023-11-21 | 2024-02-06 | 梅奥心磁(杭州)医疗科技有限公司 | Dual-energy mapping ablation catheter |
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| CN105232141B (en) | 2018-03-13 |
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Effective date of registration: 20180906 Address after: 102200 building 7, 37 Chao Qian Road, Changping District, Beijing. Patentee after: Beijing Tiandihexie Technology Co., Ltd. Address before: 102200 building 7, 37 Chao Qian Road, Changping District, Beijing. Patentee before: Lepu (Beijing) Medical Equipment Co.,Ltd. |
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Effective date of registration: 20200102 Address after: 102200, Changping District, Beijing, super Road, No. 37 Patentee after: Lepu (Beijing) Medical Devices Co., Ltd. Address before: 102200 Beijing, Changping District super Road, building No. 37, No. 7 Patentee before: Beijing Tiandihexie Technology Co., Ltd. |