JPH0288666U - - Google Patents
Info
- Publication number
- JPH0288666U JPH0288666U JP17003488U JP17003488U JPH0288666U JP H0288666 U JPH0288666 U JP H0288666U JP 17003488 U JP17003488 U JP 17003488U JP 17003488 U JP17003488 U JP 17003488U JP H0288666 U JPH0288666 U JP H0288666U
- Authority
- JP
- Japan
- Prior art keywords
- catheter
- original shape
- sensor component
- fixing means
- view
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 3
- 230000036760 body temperature Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000000747 cardiac effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000005241 right ventricle Anatomy 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000005245 right atrium Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrotherapy Devices (AREA)
Description
第１図〜第１０図は本考案の実施例を示すもの
であつて、第１図はカテーテルを示し、同図ａは
固定手段が原形復帰する前の拡大断面図、同図ｂ
は固定手段が原形復帰した状態での拡大断面図、
第２図は他の例によるカテーテルを示し、同図ａ
は固定手段（導線先端側）が原形復帰する前の拡
大断面図、同図ｂは固定手段を原形復帰させよう
としている過程での拡大断面図、同図ｃ及びｃ′
は固定手段が原形復帰した状態での拡大断面図、
第３図は第１図のカテーテルの電極を心臓の右心
室心尖部に固定した状態を示す部分断面図、第４
図は心臓に第１図のカテーテルの先端を送り込ん
だ状態を示す概略図、第５図は形状記憶合金の応
力−歪線図、第６Ａ図及び第６Ｂ図は血管に第１
図のカテーテルが挿通される状態を示す概略図、
第７図は形状記憶合金の熱処理条件と原形復帰温
度との関係をグラフ、第８図は心電図のスケツチ
、第９図は心臓ペースメーカーの内部構造を示す
概略ブロツク図、第１０図はＲ波検出の概略ブロ
ツク図、である。第１１図〜第１７図は従来例を
示すものであつて、第１１図、第１２図、第１３
図、第１４図、第１５図及び第１６図はカテーテ
ル先端部の斜視図、第１７図は他のカテーテルを
示し、同図ａは固定前の部分断面図、同図ｂは固
定しようとしている過程での部分断面図、である
。
なお、図面に示された符号において、１，２１
……カテーテル、２，２２……カテーテル本体、
２ａ，２３ａ……貫通孔、３……電極、３ａ……
固定部、４，２４……導線、５……心臓ペースメ
ーカー、６……大静脈、８……右心房、９……右
心室、９ａ……心尖部、９ｂ……肉索、２３……
電極案内、２４ａ，２４ｂ……電極及び固定部を
兼ねた導線先端側、Ｗ……温水、である。
Figures 1 to 10 show an embodiment of the present invention, in which Figure 1 shows a catheter, Figure a is an enlarged sectional view before the fixing means returns to its original shape, Figure b
is an enlarged sectional view of the fixing means in a state where it has returned to its original shape;
Figure 2 shows a catheter according to another example;
is an enlarged sectional view of the fixing means (conductor tip side) before returning to its original shape, figure b is an enlarged sectional view of the fixing means in the process of returning to its original shape, figure c and c'
is an enlarged sectional view of the fixing means in a state where it has returned to its original shape;
FIG. 3 is a partial cross-sectional view showing the state in which the electrode of the catheter shown in FIG. 1 is fixed to the apex of the right ventricle of the heart;
The figure is a schematic diagram showing the state in which the tip of the catheter shown in Figure 1 is sent into the heart, Figure 5 is a stress-strain diagram of the shape memory alloy, and Figures 6A and 6B are the first catheter tip inserted into the blood vessel.
A schematic diagram showing the state in which the catheter shown in the figure is inserted;
Figure 7 is a graph showing the relationship between heat treatment conditions and original shape recovery temperature for shape memory alloys, Figure 8 is a sketch of an electrocardiogram, Figure 9 is a schematic block diagram showing the internal structure of a cardiac pacemaker, and Figure 10 is R-wave detection. FIG. 11 to 17 show conventional examples, and FIG. 11, FIG. 12, and FIG.
14, 15, and 16 are perspective views of the tip of the catheter, and FIG. 17 shows another catheter. Figure a is a partial sectional view before fixation, and figure b is about to be fixed. This is a partial cross-sectional view of the process. In addition, in the symbols shown in the drawings, 1, 21
... Catheter, 2, 22 ... Catheter body,
2a, 23a...through hole, 3...electrode, 3a...
Fixed part, 4, 24... Conductor, 5... Cardiac pacemaker, 6... Cava, 8... Right atrium, 9... Right ventricle, 9a... Apex, 9b... Muscle, 23...
Electrode guides, 24a, 24b... the leading end side of the conductor serving as the electrode and the fixing part, W... hot water.
補正 平１．４．１０
図面の簡単な説明を次のように補正する。
明細書第１６頁第２０行〜明細書第１７頁第１
行の「原形復帰」を「電極案内からカテーテル本
体外に突出」と訂正します。
明細書第１７頁第２行の「ｃ′」円「ｄ」と訂
正します。Amendment 1.4.10 Hei 1. The brief description of the drawing is amended as follows. Specification page 16, line 20 to specification page 17, line 1
Correct "Return to original shape" in the line to "Protrude from the electrode guide to the outside of the catheter body." Correct the "c'" circle "d" on the second line of page 17 of the specification.
Claims (1)
生体の所定位置の組織に固定させるための固定手
段が設けられたセンサ構成素子付きカテーテルに
おいて、生体の体温以上の温度で原形復帰する形
状記憶合金によつて前記固定手段が構成され、前
記原形復帰状態で前記固定がなされることを特徴
とするセンサ構成素子付きカテーテル。 A catheter with a sensor component, which has a sensor component and is provided with a fixing means for fixing the sensor component to tissue at a predetermined position of a living body, is made of a shape memory alloy that returns to its original shape at a temperature equal to or higher than the body temperature of the living body. A catheter with a sensor component, characterized in that the fixing means is configured so that the fixing is performed in the state of returning to the original shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17003488U JPH0288666U (en) | 1988-12-28 | 1988-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17003488U JPH0288666U (en) | 1988-12-28 | 1988-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0288666U true JPH0288666U (en) | 1990-07-13 |
Family
ID=31460617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17003488U Pending JPH0288666U (en) | 1988-12-28 | 1988-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0288666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016527991A (en) * | 2013-08-16 | 2016-09-15 | カーディアック ペースメイカーズ， インコーポレイテッド | Leadless cardiac pacing device |
| US11027125B2 (en) | 2016-01-21 | 2021-06-08 | Medtronic, Inc. | Interventional medical devices, device systems, and fixation components thereof |
-
1988
- 1988-12-28 JP JP17003488U patent/JPH0288666U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016527991A (en) * | 2013-08-16 | 2016-09-15 | カーディアック ペースメイカーズ， インコーポレイテッド | Leadless cardiac pacing device |
| US11027125B2 (en) | 2016-01-21 | 2021-06-08 | Medtronic, Inc. | Interventional medical devices, device systems, and fixation components thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Park et al. | Effect of alteration of left ventricular activation sequence on the left ventricular end-systolic pressure-volume relation in closed-chest dogs. | |
| Farshidi et al. | Electrophysiologic characteristics of concealed bypass tracts: clinical and electrocardiographic correlates | |
| US5423772A (en) | Coronary sinus catheter | |
| JPS6162444A (en) | Method and apparatus for detecting frequent pulse generatingposition | |
| Amat-y-Leon et al. | Catheter mapping of retrograde atrial activation. Observations during ventricular pacing and AV nodal re-entrant paroxysmal tachycardia. | |
| Lüderitz | History of the disorders of cardiac rhythm | |
| Tada et al. | Successful catheter ablation of atrial tachycardia originating near the atrioventricular node from the noncoronary sinus of Valsalva | |
| EP0606688A2 (en) | Intravenous cardiac lead with improved fixation and method | |
| JPH03118762U (en) | ||
| WO2005051481A1 (en) | Implantable defibrillator lead including a physiological sensor | |
| US20110208077A1 (en) | System and method for exploiting atrial eelctrocardiac parameters in assessing left atrial pressure using an implantable medical device | |
| JPH0288666U (en) | ||
| JPH0488666U (en) | ||
| JPH02203869A (en) | Electric stimulating device | |
| Siegel et al. | Intracardiac electrode detection of early or subendocardial ischemia | |
| JPH0488665U (en) | ||
| JPH0288665U (en) | ||
| Chinushi et al. | Frequency and output‐dependent change in conduction over slow pathways in a patient with sustained ventricular tachycardia unrelated to coronary artery disease | |
| Paul et al. | Non-contact mapping and ablation of tachycardia originating in the right ventricular outflow tract | |
| Huiskamp et al. | Invasive confirmation of the human ventricular activation sequence as computed from body surface potentials | |
| Castini et al. | Demonstration of the relationship between heart dimensions and QRS voltage amplitude | |
| Watanabe | Terminology and Electrophysiologic Concepts in Cardiac Arrhythmias. II. Concealed Conduction. | |
| Marchlinski et al. | Ventricular tachycardia from the aortic cusps: localization and ablation | |
| Correia-Junior et al. | Ambulatory ST segment changes and related incidence of silent ischemia | |
| Morady et al. | Dissociation of atrial electrograms by right and left atrial pacing in patients with atrioventricular reciprocating tachycardia |