CN105232141B - A kind of medical catheter head end for surveying contact force - Google Patents
A kind of medical catheter head end for surveying contact force Download PDFInfo
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- CN105232141B CN105232141B CN201510642085.8A CN201510642085A CN105232141B CN 105232141 B CN105232141 B CN 105232141B CN 201510642085 A CN201510642085 A CN 201510642085A CN 105232141 B CN105232141 B CN 105232141B
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- head end
- medical catheter
- pedestal
- piezoelectric ceramics
- catheter head
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Abstract
The present invention provides a kind of medical catheter head end for surveying contact force, and the medical catheter head end includes electrode tip and device for measuring force；Some blind holes are provided with the electrode tip；The device for measuring force includes some piezoelectric ceramics spring sensors, pedestal, some buttock lines, and some through holes are provided with the pedestal.Deformable body and sensor combinations are reduced to two-in-one pattern by the present invention, so as to reduce assembling difficulty and error, improve the precision of dynamometry head end.The present invention is by measuring the pressure of conductor housing end in contact heart or arterial tissue rich in sympathetic nerve, to ensure in the scope of safety, with for improving the security of radio-frequency ablation procedure；In ablative surgery, depth of ablation can be judged with contacting the pressure of tissue by measuring conduit head end, select rational ablation power and time to provide reliable data and support for doctor.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of medical catheter head end for surveying contact force.
Background technology
In medical interventions, radio frequency ablation catheter has had extensive use, and it is mainly used in heart atrial fibrillation, the heart
Restrain the treatment of the diseases such as uneven, intractable hypertension.Under the auxiliary of X-ray machine, doctor passes through on femoral artery or radial artery
Puncture radio frequency ablation catheter by blood vessel insertion heart or the artery rich in sympathetic nerve, carrying out radio frequency to lesions position and disappearing
Melt.
Current this radio-frequency ablation procedure is by the manually operated completion of experienced doctor, because human hand is difficult to accurately
Conduit head end is controlled to the power that reclines of tissue, thus often have in heart and artery ablation operation perforation and oedema and
Send out disease.
Therefore, there is an urgent need to a kind of conduit that can be reduced the complication for having perforation and oedema and occur in the market.
The content of the invention
The defects of for above-mentioned prior art, the present invention provide a kind of medical catheter head end for surveying contact force, Neng Gouti
The security of firing frequency ablative surgery, provide the reliable force data that reclines for doctor and support.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of medical catheter head end for surveying contact force, the medical catheter head end include electrode tip and device for measuring force；Institute
State and some blind holes are provided with electrode tip；The device for measuring force includes some piezoelectric ceramics spring sensors, pedestal, some tails
Line, some through holes are provided with the pedestal；Wherein, the head end of each piezoelectric ceramics spring sensor is corresponding and solid respectively
Determine into the blind hole；The tail end of each piezoelectric ceramics spring sensor corresponds to and is fixed to the described of the pedestal respectively
On through hole, and it is connected respectively to by the through hole on the corresponding buttock line.
In such scheme preferably, some buttock lines are located at the inside of conduit supervisor, and the buttock line passes through institute
Conduit supervisor is stated to be connected with demodulated equipment.
In such scheme preferably, the conduit supervisor is fixedly connected with the pedestal.
In such scheme preferably, some piezoelectric ceramics spring sensors are radially placed on the electrode
Between head and the pedestal.
In such scheme preferably, circumferencial direction of some piezoelectric ceramics spring sensors along the conduit is uniform
Distribution.
In such scheme preferably, the through hole on the blind hole, piezoelectric ceramics spring sensor, buttock line and the pedestal
Number is equal.
In such scheme preferably, the through hole on the blind hole, piezoelectric ceramics spring sensor, buttock line and the pedestal
Number is 3.
Deformable body and sensor combinations are reduced to two-in-one pattern by the present invention, so as to reduce assembling difficulty and error,
Improve the precision of dynamometry head end.The present invention is by measuring the pressure of conductor housing end in contact heart or arterial tissue rich in sympathetic nerve
Power, to ensure in the scope of safety, with for improving the security of radio-frequency ablation procedure；In ablative surgery, it can pass through
Conduit head end is measured with contacting the pressure of tissue to judge depth of ablation, selects rational ablation power and time to provide for doctor
Reliable data are supported.
Brief description of the drawings
Fig. 1 is a kind of structural representation for the medical catheter head end for surveying contact force of the present invention.
Fig. 2 is that a kind of medical catheter head end for surveying contact force of the present invention is illustrated in supravasal installation site
Figure.
Fig. 3 is a kind of medical catheter head end for surveying contact force of the present invention in supravasal base construction figure.
Embodiment
In the prior art, described in CN201420301029.9 can measuring pressure conduit head end structure need one deformation
The device of body and some sensor combinations, the annex so having more can cause measurement error bigger than normal.Eliminated in the present invention this
Deformable body structure, deformable body and sensor combinations are reduced to two-in-one pattern, so as to reduce assembling difficulty and error, improved
The precision of dynamometry head end.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
So-called head end, tail end are for reference with pedestal 3, and what it is close to pedestal 3 is for tail end, the one end of opposite base 3 farther out
Head end.
The present invention provides a kind of medical catheter head end for surveying contact force, and the head end includes electrode tip, and with it is described
Electrode tip is connected to calculate the device for measuring force of the electrode tip stress size and Orientation.
Wherein, some piezoelectric ceramics springs that the device for measuring force includes according to stress to be changed and being deformed upon sense
Device, the size and Orientation of the electrode tip stress is measured out by the different distortion of some piezoelectric ceramics spring sensors.It is described
Some piezoelectric ceramics spring sensors are radially placed between the electrode tip of medical catheter and pedestal, and described some
Piezoelectric ceramics spring sensor is uniformly distributed along the circumferencial direction of conduit.
The piezoelectric ceramics spring sensor is into spring-like.When the electrode tip stress of the medical catheter, if the dry-pressing
Electroceramics spring sensor deforms upon, and produces electric signal (can be accurate to millivolt), should by its latter linked buttock line export
Electric signal, the demodulated equipment that the buttock line connects carry out detection and analysis calculating after obtaining the electric signal, finally draw medical lead
The stress size and Orientation at tube head end.
Fig. 1 is a kind of structural representation for the medical catheter head end for surveying contact force of the present invention.As shown in figure 1,
The medical catheter head end includes electrode tip 1 and three blind holes (501,502,503) and dynamometry that are set on electrode tip 1 dress
Put, the device for measuring force include three piezoelectric ceramics spring sensors (201,202,203), 3, three buttock lines of pedestal (401,
402、403)。
Fig. 3 is a kind of medical catheter head end for surveying contact force of the present invention in supravasal base construction figure.Institute
State three through holes 601,602,603 of setting on pedestal 3.
Wherein, one end of each piezoelectric ceramics spring sensor 201,202,203 corresponds to and fixed to three respectively
In the blind hole 501,502,503, the other end of each piezoelectric ceramics spring sensor 201,202,203 corresponds to simultaneously respectively
Fixed to the three piezoelectric ceramics spring sensors on the through hole 601,602,603, adjusted between electrode tip 1 and pedestal 3
201st, 202,203 distance so that they are consistent.In each piezoelectric ceramics spring sensor 201,202,203
Tail end is connected to buttock line 401,402,403.
Fig. 2 is that a kind of medical catheter head end for surveying contact force of the present invention is illustrated in supravasal installation site
Figure.As shown in Fig. 2 three buttock lines 401,402,403 are connected to the near-end of conduit by conduit supervisor 5, finally by conduit master
Pipe 5 is connected on demodulated equipment.Three buttock lines 401,402,403 5 are included by conduit supervisor, the head end of conduit supervisor 5 with
Pedestal 3 is fixed together.
When 1 stress of electrode tip, three piezoelectric ceramics spring sensors 201,202,203 can deform upon, due to deformation
Caused millivolt signal will be delivered on demodulated equipment by three buttock lines 401,402,403, pass through the calculating energy of demodulated equipment
Access accurate stress size and Orientation.
In ablative surgery, medical catheter head end provided by the invention, by the way that electrode tip is connected with device for measuring force, application
On radio frequency ablation catheter, the pressure value of conductor housing end in contact heart or the arterial tissue rich in sympathetic nerve can be measured to sentence
Disconnected depth of ablation, select rational ablation power and time to provide reliable data and support for doctor, pacifying it by operation
In full number range, for improving the security of radio-frequency ablation procedure.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (5)
1. a kind of medical catheter head end for surveying contact force, it is characterised in that the medical catheter head end includes electrode tip and survey
Power apparatus；Some blind holes are provided with the electrode tip；
The device for measuring force includes some piezoelectric ceramics spring sensors, pedestal, some buttock lines, is provided with the pedestal some
Through hole, the number of through-holes on the blind hole, piezoelectric ceramics spring sensor, buttock line and the pedestal is 3；
Wherein,
The head end of each piezoelectric ceramics spring sensor corresponds to and fixed in the blind hole respectively；
The tail end of each piezoelectric ceramics spring sensor corresponds to and on the through hole fixed to the pedestal respectively, and leads to
The through hole is crossed to be connected respectively on the corresponding buttock line.
2. medical catheter head end as claimed in claim 1, it is characterised in that some buttock lines are located at conduit supervisor's
Inside, the buttock line are connected through conduit supervisor with demodulated equipment.
3. medical catheter head end as claimed in claim 1, it is characterised in that the conduit supervisor fixes with the pedestal to be connected
Connect.
4. medical catheter head end as claimed in claim 1, it is characterised in that some piezoelectric ceramics spring sensors are along footpath
It is placed on to direction between the electrode tip and the pedestal.
5. medical catheter head end as claimed in claim 1, it is characterised in that some piezoelectric ceramics spring sensors are along institute
The circumferencial direction for stating conduit is uniformly distributed.
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 |
|---|---|
| CN105232141A CN105232141A (en) | 2016-01-13 |
| CN105232141B true CN105232141B (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601618B (en) * | 2016-01-29 | 2021-05-25 | 波士顿科学医学有限公司 | Force sensing catheter with impedance guided orientation |
| 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 |
| 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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| US5807265A (en) * | 1996-01-09 | 1998-09-15 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Catheter having pressure detecting ability |
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| US8347738B2 (en) * | 2007-05-09 | 2013-01-08 | The Board Of Trustees Of The Leland Stanford Junior University | Sensors and control for an interventional catheter |
| CN203915066U (en) * | 2014-06-06 | 2014-11-05 | 乐普（北京）医疗器械股份有限公司 | A kind of medical catheter head end that can measuring pressure |
| CN104244808A (en) * | 2012-04-04 | 2014-12-24 | 布鲁塞尔大学 | Optical force transducer |
| CN104586499A (en) * | 2013-10-30 | 2015-05-06 | 上海微创电生理医疗科技有限公司 | Medical treatment catheter |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8157789B2 (en) * | 2007-05-24 | 2012-04-17 | Endosense Sa | Touch sensing catheter |
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2015
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US8347738B2 (en) * | 2007-05-09 | 2013-01-08 | The Board Of Trustees Of The Leland Stanford Junior University | Sensors and control for an interventional catheter |
| CN102548496A (en) * | 2009-09-15 | 2012-07-04 | 皇家飞利浦电子股份有限公司 | Medical ultrasound device with force detection |
| CN102078187A (en) * | 2009-11-30 | 2011-06-01 | 韦伯斯特生物官能公司 | Catheter with pressure measuring tip |
| CN102160909A (en) * | 2009-12-28 | 2011-08-24 | 韦伯斯特生物官能(以色列)有限公司 | Catheter with strain gauge sensor |
| CN104244808A (en) * | 2012-04-04 | 2014-12-24 | 布鲁塞尔大学 | Optical force transducer |
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| CN105232141A (en) | 2016-01-13 |
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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. |
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