CN204072312U - The controllable radio frequency ablation catheter that a kind of two curved adjustable damping push-and-pull controls - Google Patents
The controllable radio frequency ablation catheter that a kind of two curved adjustable damping push-and-pull controls Download PDFInfo
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- CN204072312U CN204072312U CN201420403639.XU CN201420403639U CN204072312U CN 204072312 U CN204072312 U CN 204072312U CN 201420403639 U CN201420403639 U CN 201420403639U CN 204072312 U CN204072312 U CN 204072312U
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- drawing handle
- push rod
- catheter
- push
- interposing catheter
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Abstract
The utility model discloses the controllable radio frequency ablation catheter that a kind of two curved adjustable damping push-and-pull controls, comprise ablating electrode, interposing catheter, drawing handle and draught line, interposing catheter front end is bendable tune, ablating electrode is located on bendable tune, steerable catheter also comprises push rod, interposing catheter tail end is fixed on push rod front end, push rod movable set is in drawing handle, draught line is built in interposing catheter, draught line front end is fixed in bendable tune, the rear end of draught line is fixed in drawing handle through push rod, push rod slides along drawing handle and makes the generation bilateral deflection of bendable tune with push-and-pull draught line or beat directly.This utility model is by simple push-pull fashion operation drawing handle, by reciprocatingly sliding between push rod and drawing handle, realize the bilateral deflection of interposing catheter and beat straight, good straightforward energy is beaten because this utility model has, be conducive to interposing catheter rotation, return, adjustment and recovery, doctor is easier to desired location interposing catheter being sent to heart.
Description
Technical field
This utility model relates to a kind of ablation catheter used in radio-frequency ablation procedure, the controllable radio frequency ablation catheter of particularly a kind of two curved adjustable damping push-and-pull control.
Background technology
Radiofrequency catheter ablation (RFCA) is that development in recent years is got up and a kind of effective ways for effecting a radical cure paroxysmal supraventricular tachycardia (PSVT) and atrial fibrillation reached its maturity, primary treatment tachy-arrhythmia.Its operation principle is: under the monitoring of X-ray angiography machine, pass through puncture vessel, ablation catheter is inserted heart, first determine to cause tachycardic anomalous structure position with the inspection of electro physiology mapping catheter, then high frequency electric is discharged in this local, place, by the heat energy of high frequency electric, make local organization produce damage, reach therapeutic purposes.
By joystick, control is carried out to the deflection of melting catheter proximal end and be called steerable catheter.Steerable catheter comprises front end and the interposing catheter of ablating electrode is housed and is located at the joystick of interposing catheter tail end, and the front end being provided with ablating electrode is bendable tune, and the front end of interposing catheter has steel wire to be connected with joystick.By operating control handle, the front end of steel wire push-and-pull interposing catheter realizes deflection.Namely joystick is controlled by the front end of steel wire to interposing catheter be fixed thereon.
In the market, Johnson & Johnson and IBI controllable radio frequency ablation catheter all adopt propelling movement mode to apply pulling force to steel wire and realize interposing catheter front end unilateral deflection, there is following defect in this mode: interposing catheter is being sent in desired location process by doctor, generally just can be able to put in place through multi-pass operation, need interposing catheter to beat directly in this process, then proceed to bit manipulation, owing to there is no bilateral deflection function, and shortcoming beats straightforward energy, is unfavorable for the rotation of interposing catheter, return, adjustment and recovery.And MED controllable radio frequency ablation catheter implements pulling force and thrust by the knob on joystick to steel wire, realize bilateral deflection, but owing to not being carry out with simple push-pull fashion, but employing rotation mode, make manner of execution directly perceived not, and operation is more complicated, feel is poor.
Utility model content
The purpose of this utility model is to provide the controllable radio frequency ablation catheter that a kind of structure is simple, the two curved adjustable damping push-and-pull of simple and direct-viewing operation, good hand touch controls.
The purpose of this utility model is realized by following technical measures: the controllable radio frequency ablation catheter that a kind of two curved adjustable damping push-and-pull controls, comprise ablating electrode, interposing catheter, drawing handle and draught line, the front end of described interposing catheter is bendable tune, described ablating electrode is located on described bendable tune, it is characterized in that: described steerable catheter also comprises push rod, the tail end of described interposing catheter is fixed on the front end of push rod, described push rod movable set is in described drawing handle, described draught line is built in described interposing catheter, the front end of described draught line is fixed in the bendable tune of interposing catheter, the rear end of described draught line is fixed in drawing handle through push rod, push rod slides along drawing handle and makes the generation bilateral deflection of bendable tune with push-and-pull draught line or beat directly.
This utility model is by simple push-pull fashion operation drawing handle, by reciprocatingly sliding between push rod and drawing handle, realize the bilateral deflection of interposing catheter and beat straight, good straightforward energy is beaten because this utility model has, be conducive to the rotation of interposing catheter, return, adjustment and recovery, doctor is easier to desired location interposing catheter being sent to heart.This utility model simple and direct-viewing operation, good hand touch.Compared with the bilateral deflection conduit of MED radio frequency ablation catheter, this utility model is simpler easily more usual by doctor institute.
Improve as one of the present utility model, between described push rod and drawing handle, be provided with the position-limit mechanism for spacing push rod sliding stroke in drawing handle.
As a kind of embodiment of the present utility model, described position-limit mechanism comprises chute and locating part, and described chute is arranged on the outer wall of push rod vertically, and described locating part to be arranged on drawing handle and to insert into the inner, and the inserting end of locating part is arranged in described chute.
This utility model is provided with the zero point mediated and the positive negative flag being distributed in both sides at zero point on the edge of chute, what indicate interposing catheter zero point beats straight state, positive negative flag indicates the bilateral deflection state of interposing catheter respectively, corresponds to the position perforate of drawing handle zero point to show the labelling corresponding to different conditions.
As further improvement of the utility model, described controllable radio frequency ablation catheter also comprises and is sleeved on tubular gland on push rod and damped ring, the rear end of described gland has external screw thread, the front inner wall of described drawing handle has groove, the external screw thread that described groove walls is provided with screw thread and gland is suitable, the rear end inwall of described gland is provided with mounting groove, a part for described damped ring is arranged in mounting groove, another part is positioned at the groove of drawing handle, make gland and drawing handle generation relative movement to realize the resistance-adjustable between push rod and drawing handle to damped ring enforcement axial compressive force by turn gland.
Push rod described in the utility model is made into integration primarily of the lever of fairlead, flat bulk and slide bar, the front end of described slide bar and the rear end of fairlead are connected on the two sides of lever, the rear end of described interposing catheter is fixed on lever through fairlead, and described slide bar and described drawing handle are slidably matched.
As a kind of embodiment of the present utility model, described draught line adopts titanium-nickel wire, the rear portion of described drawing handle is provided with the fixed leg inserted into the inner, and the rear end of described NiTi titanium-nickel wire is rigidly attached on the inserting end of fixed leg, and the duct for being set with slide bar is arranged in the front portion of drawing handle.
Compared with prior art, this utility model has following significant effect:
(1) this utility model is by simple push-pull fashion operation drawing handle, by reciprocatingly sliding between push rod and drawing handle, realize the bilateral deflection of interposing catheter and beat straight, good straightforward energy is beaten because this utility model has, be conducive to the rotation of interposing catheter, return, adjustment and recovery, doctor is easier to desired location interposing catheter being sent to heart.
(2) this utility model structure is simple, simple and direct-viewing operation, good hand touch.
(3) this utility model is by the compression degree of gland to damped ring, the resistance to sliding between regulating pushing rod and drawing handle.
(4) the titanium-nickel wire fixed form of this utility model uniqueness guarantees that titanium-nickel wire can not split at manipulation process interrupt and lose efficacy.
(5), compared with the bilateral deflection conduit of existing MED radio frequency ablation catheter, this utility model is simpler easily more usual by doctor institute, can be widely used in each medical institutions.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is one of perspective structure schematic diagram of the present utility model (interposing catheter front end deflects left);
Fig. 2 is perspective structure schematic diagram two (interposing catheter is in beating straight state) of the present utility model;
Fig. 3 is perspective structure schematic diagram three (interposing catheter front end deflects to the right) of the present utility model;
Fig. 4 is one of this utility model gland, drawing handle, damped ring assembly structure partial schematic sectional view (damped ring does not compress completely);
Fig. 5 is this utility model gland, drawing handle, damped ring assembly structure partial schematic sectional view two (damped ring compresses completely).
Detailed description of the invention
As shown in Fig. 1 ~ 5, it is the controllable radio frequency ablation catheter that a kind of two curved adjustable damping push-and-pull of this utility model controls, comprise ablating electrode, interposing catheter 1, drawing handle 8, draught line and push rod 4, draught line adopts titanium-nickel wire 2, the front end of interposing catheter 1 is bendable tune 11, ablating electrode is located on bendable tune 11, the tail end of interposing catheter 1 is fixed on the front end of push rod 4, push rod 4 movable set is in drawing handle 8, titanium-nickel wire 2 is built in interposing catheter 1, the front end of titanium-nickel wire 2 is fixed in the bendable tune 11 of interposing catheter 1, the rear portion of drawing handle 8 is provided with the fixed leg 9 inserted into the inner, the rear end of titanium-nickel wire 2 is rigidly attached on the inserting end of fixed leg 9, be rigidly connected between titanium-nickel wire and fixed leg and can realize can not bending when titanium-nickel wire bears pressure, drawing handle 8 slides along push rod 4 and makes bendable tune 11 that bilateral deflection occur with push-and-pull titanium-nickel wire 2 or beat straight.
The position-limit mechanism for spacing push rod sliding stroke in drawing handle is provided with between push rod 4 and drawing handle 8.In the present embodiment, position-limit mechanism comprises chute 41 and locating part, locating part adopts screw 7, chute 41 is arranged on the outer wall of push rod 4 vertically, screw 7 to be arranged on drawing handle 8 and to insert into the inner, the inserting end of screw 7 is arranged in chute 41, for the range that spacing push rod 4 slides in drawing handle 8, the edge of chute 41 is provided with the zero point mediated and the positive negative flag being distributed in both sides at zero point, what indicate interposing catheter 1 zero point beats straight state, positive negative flag indicates the bilateral deflection state of interposing catheter 1 respectively, correspond to the position perforate of drawing handle 8 zero point to show the labelling corresponding to different conditions.
As shown in Figure 4,5, also comprise and be sleeved on tubular gland 5 on push rod 4 and damped ring 6, the rear end of gland 5 has external screw thread, the front inner wall of drawing handle 8 has groove 81, the external screw thread that groove 81 wall is provided with screw thread and gland 5 is suitable, the rear end inwall of gland 5 is provided with mounting groove, a part for damped ring 6 is arranged in mounting groove, another part is positioned at the groove 81 of drawing handle 8, makes gland 5 and drawing handle 8 that relative movement occur to implement to damped ring 6 resistance-adjustable that axial compressive force realizes between push rod 4 and drawing handle 8 by turn gland 5.In above-mentioned adjustment process, damped ring is under axial compressive force effect, and its thickness constantly reduces, and because damped ring external diameter is limited, internal diameter is diminished, the resistance that damped ring is applied on push rod increases gradually, realizes the resistance-adjustable between push rod and drawing handle.
Push rod 4 is made into integration primarily of the lever 43 of fairlead 42, flat bulk and slide bar 44, the front end of slide bar 44 and the rear end of fairlead 42 are connected on the two sides of lever 43, the rear end of interposing catheter 1 is fixed on through fairlead 42 and lever 43 realizes interposing catheter 1 is fixed on push rod 4, slide bar 44 and drawing handle 8 are slidably matched, and the duct 82 for being set with slide bar 44 is arranged in the front portion of drawing handle 8.
Work process of the present utility model is as follows: hand-held lever 43, driven forward drawing handle 8, push rod 4 does relative motion, slip in drawing handle 8, titanium-nickel wire 2 is under the promotion of drawing handle, and interposing catheter 1 front end is stressed, interposing catheter 1 leading portion is deflected left gradually, until screw 7 arrives the range place, left side of sliding tray, interposing catheter 1 front end completes and farthest deflects left, as shown in Figure 1; Pull back drawing handle 8, push rod 4 does relative motion, and skids off drawing handle 8 gradually, and when screw 7 is positioned at the centre position of sliding tray, titanium-nickel wire 2 is in the state of not stressing, and now, interposing catheter 1 is in beats straight state, as shown in Figure 2; Continue to pull back drawing handle 8, interposing catheter 1 front end is by pulling force, until screw 7 arrives the range place, right side of sliding tray, interposing catheter 1 front end completes and farthest deflects to the right, as shown in Figure 3.Visible, this utility model, by simple push-pull fashion operation drawing handle, achieves the bilateral deflection of interposing catheter and beats straight.Continue according to the cycling of aforesaid operations process, good beat straightforward energy because this utility model has, be conducive to the rotation of interposing catheter, return, adjustment and recovery, doctor is easier to desired location interposing catheter being sent to heart.
Embodiment of the present utility model is not limited thereto; according to foregoing of the present utility model; according to ordinary technical knowledge and the customary means of this area; do not departing under this utility model above-mentioned basic fundamental thought prerequisite; this utility model can also make the amendment of other various ways, replacement or change, all drops within this utility model rights protection scope.
Claims (7)
1. the controllable radio frequency ablation catheter of two curved adjustable damping push-and-pull control, comprise ablating electrode, interposing catheter, drawing handle and draught line, the front end of described interposing catheter is bendable tune, described ablating electrode is located on described bendable tune, it is characterized in that: described steerable catheter also comprises push rod, the tail end of described interposing catheter is fixed on the front end of push rod, described push rod movable set is in described drawing handle, described draught line is built in described interposing catheter, the front end of described draught line is fixed in the bendable tune of interposing catheter, the rear end of described draught line is fixed in drawing handle through push rod, push rod slides along drawing handle and makes the generation bilateral deflection of bendable tune with push-and-pull draught line or beat directly.
2. the controllable radio frequency ablation catheter of two curved adjustable damping push-and-pull control according to claim 1, is characterized in that: be provided with the position-limit mechanism for spacing push rod sliding stroke in drawing handle between described push rod and drawing handle.
3. the controllable radio frequency ablation catheter of two curved adjustable damping push-and-pull control according to claim 2, it is characterized in that: described position-limit mechanism comprises chute and locating part, described chute is arranged on the outer wall of push rod vertically, described locating part to be arranged on drawing handle and to insert into the inner, and the inserting end of locating part is arranged in described chute.
4. the controllable radio frequency ablation catheter of two curved adjustable damping push-and-pull control according to claim 3, it is characterized in that: on the edge of chute, be provided with the zero point mediated and the positive negative flag being distributed in both sides at zero point, what indicate interposing catheter zero point beats straight state, positive negative flag indicates the bilateral deflection state of interposing catheter respectively, corresponds to the position perforate of drawing handle zero point to show the labelling corresponding to different conditions.
5. the controllable radio frequency ablation catheter of two curved adjustable damping push-and-pull control according to claim 4, it is characterized in that: described controllable radio frequency ablation catheter also comprises and is sleeved on tubular gland on push rod and damped ring, the rear end of described gland has external screw thread, the front inner wall of described drawing handle has groove, the external screw thread that described groove walls is provided with screw thread and gland is suitable, the rear end inwall of described gland is provided with mounting groove, a part for described damped ring is arranged in mounting groove, another part is positioned at the groove of drawing handle, make gland and drawing handle generation relative movement to realize the resistance-adjustable between push rod and drawing handle to damped ring enforcement axial compressive force by turn gland.
6. the controllable radio frequency ablation catheter of two curved adjustable damping push-and-pull control according to claim 5, it is characterized in that: described push rod is made into integration primarily of the lever of fairlead, flat bulk and slide bar, the front end of described slide bar and the rear end of fairlead are connected on the two sides of lever, the rear end of described interposing catheter is fixed on lever through fairlead, and described slide bar and described drawing handle are slidably matched.
7. the controllable radio frequency ablation catheter of two curved adjustable damping push-and-pull control according to claim 6, it is characterized in that: described draught line adopts titanium-nickel wire, the rear portion of described drawing handle is provided with the fixed leg inserted into the inner, the rear end of described titanium-nickel wire is rigidly attached on the inserting end of fixed leg, and the duct for being set with slide bar is arranged in the front portion of drawing handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403639.XU CN204072312U (en) | 2014-07-21 | 2014-07-21 | The controllable radio frequency ablation catheter that a kind of two curved adjustable damping push-and-pull controls |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420403639.XU CN204072312U (en) | 2014-07-21 | 2014-07-21 | The controllable radio frequency ablation catheter that a kind of two curved adjustable damping push-and-pull controls |
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| Publication Number | Publication Date |
|---|---|
| CN204072312U true CN204072312U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420403639.XU Active CN204072312U (en) | 2014-07-21 | 2014-07-21 | The controllable radio frequency ablation catheter that a kind of two curved adjustable damping push-and-pull controls |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031658B (en) * | 2015-03-19 | 2019-04-19 | 上海微创电生理医疗科技有限公司 | A kind of modular catheter and the radio frequency ablation catheter using the handle |
| CN110251123A (en) * | 2019-07-09 | 2019-09-20 | 深圳市惠泰医疗器械有限公司 | Can simultaneously coordination electrode conduit two kinds of bendings of head end control mechanism |
| CN115363745A (en) * | 2022-10-27 | 2022-11-22 | 杭州德诺电生理医疗科技有限公司 | Ablation catheter |
-
2014
- 2014-07-21 CN CN201420403639.XU patent/CN204072312U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031658B (en) * | 2015-03-19 | 2019-04-19 | 上海微创电生理医疗科技有限公司 | A kind of modular catheter and the radio frequency ablation catheter using the handle |
| CN110251123A (en) * | 2019-07-09 | 2019-09-20 | 深圳市惠泰医疗器械有限公司 | Can simultaneously coordination electrode conduit two kinds of bendings of head end control mechanism |
| CN115363745A (en) * | 2022-10-27 | 2022-11-22 | 杭州德诺电生理医疗科技有限公司 | Ablation catheter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |