CN207785273U - A kind of cryoablation conduit with pusher - Google Patents
A kind of cryoablation conduit with pusher Download PDFInfo
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- CN207785273U CN207785273U CN201721128714.6U CN201721128714U CN207785273U CN 207785273 U CN207785273 U CN 207785273U CN 201721128714 U CN201721128714 U CN 201721128714U CN 207785273 U CN207785273 U CN 207785273U
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- rigid pipe
- pusher
- conveying assembly
- movable part
- connect
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Abstract
The utility model is related to a kind of cryoablation conduit with pusher, pusher includes push handle, movable part, first rigid pipe and the second rigid pipe, push handle is connect with movable part, the distal end of movable part is connect with the proximal end of the first rigid pipe, the proximal end of second rigid pipe is sleeved on the distal portions of the first rigid pipe, conveying assembly is arranged on the inside of the first rigid pipe, the distal end of conveying assembly is connect with the proximal end of freezing element, the proximal part of conveying assembly is connect with movable part, operation push handle drives movable part so that freezing element moves axially in reciprocal fashion by conveying assembly；The conveying assembly in the first rigid pipe can be protected by the way that the first rigid pipe is arranged, conveying assembly is avoided and fracture occurs during push freezes element or folds to bring operation risk.
Description
Technical field
The utility model is related to cryoablation fields, and in particular to a kind of cryoablation conduit with pusher.
Background technology
Cryoablation (Cryoablation) is to make intraor extracellular form ice hockey to destroy cell by low temperature.Freezing
When ablation, cryoprobe is placed in the surface of tissue, low temperature is led to by refrigeration so that the intraor extracellular for surrounding of popping one's head in forms ice
Ball.With the decline of temperature, the cell in ice hockey generates the damage of irreversibility.Cryoablation damage process can be divided into 3 ranks
Section：(1) freezing/rewarming phase；(2) bleeding and inflammatory phase；(3) fiber forms the phase.
Cryoablation is a kind of useful therapeutic modality in extensive intervention operation catheter-based.For example, freezing
Ablation can be used for melting Pulmonary venous vestibule, cause pulmonary vein to be electrically isolated, to treat auricular fibrillation；Cryoablation can be used for melting
Arteria renalis sympathetic nerve, to treat resistant hypertension, which has been used to clinical test；Cryoablation can be additionally used in
Ablated tumor, treatment arteries are narrow etc..During these cold therapies, cryoablation can be pushed via body lumen
Distensible utricule delivers refrigerant.These utricules are operably connected to external operating element (such as cryogen source).
Application No. is the Chinese patents of CN201180050945.9 to disclose a kind of medical system, including：Catheter body, this is led
Tube body has proximal part and distal portions；Axis, the axis are slidably disposed in a part for catheter body, the axis limit distal side
End；Fluid injection conduit, the fluid injection conduit are connected to the distal portions of catheter body and the distal end of axis, the fluid injection conduit
It can be transitioned into the second geometrical construction from the first geometrical construction；Diaphragm, the diaphragm are connected to axis and by least the one of fluid injection conduit
In being partially enclosed therein；And coolant source, the coolant source are in fluid communication with fluid injection conduit.First geometrical construction can be big
It causes linearly, and the second geometrical construction can be substantially spiral, septation is tensioned across in the second geometrical construction
Fluid injection conduit at least part, and the manipulation of axis makes fluid injection conduit be transitioned into the second geometry structure from the first geometrical construction
It makes；There is freezing units, and security risk is likely to occur in moving process for the patent, and operation handle is long is unfavorable for using
The problem of person manipulates.
Invention content
Utility model aims to solve problems of the prior art, a kind of protection conveying assembly is provided and is being pushed away
Cryoablation conduit not easy to break with pusher during sending.
The utility model aim is achieved through the following technical solutions：
A kind of cryoablation conduit with pusher, including push handle, movable part, the first rigid pipe and the second rigidity
Pipe, the push handle are connect with the movable part, and the distal end of the movable part is connect with the proximal end of first rigid pipe, institute
The proximal end for stating the second rigid pipe is sleeved on the distal portions of first rigid pipe, and conveying assembly is arranged on first rigidity
In pipe, the distal end of the conveying assembly is connect with the proximal end of freezing element, the proximal part of the conveying assembly and the activity
Part connects, and operating the push handle can drive the freezing element to move axially in reciprocal fashion.
Preferably, the distal portions of second rigid pipe are arranged on the proximal inner of sheath.
Preferably, second rigid pipe is integrally set the proximal inner in sheath.
Preferably, the conveying assembly is fixedly connected with the lumen wall of first rigid pipe.
Preferably, the outer diameter of first rigid pipe is slightly less than the internal diameter of second rigid pipe.
Preferably, first rigid pipe and second rigid pipe are stainless steel tubes.
Preferably, the movable part is sliding block.
Preferably, the switching proximally by the movable part of the conveying assembly is connect with connection unit.
Compared with prior art, the beneficial effects of the utility model are mainly reflected in：
The cryoablation conduit with pusher of the utility model is by being arranged the first rigid pipe and being sleeved on first just
Property pipe distal end the second rigid pipe can protect the conveying assembly in the first rigid pipe, avoid conveying assembly push freezing member
Fracture occurs during part or folds the operation risk brought；Second rigid pipe is completely set in the proximal end of supply unit
Portion can save the length of operating unit, avoid operation handle long, patient is facilitated to operate.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of cryoablation conduit with pusher of the utility model；
Fig. 2 a are a kind of sectional view of embodiment of the pusher of the utility model in an axial direction；
Fig. 2 b are the sectional view of the another embodiment of the pusher of the utility model in an axial direction；
Fig. 3 is a kind of partial enlarged view of cryoablation distal catheter portion with pusher of the utility model；
Fig. 4 is sectional views of the Fig. 3 along A-A；
Wherein：1 is connection unit, and 2 be operating unit, and 3 be supply unit, and 4 be flexible steel in flat section tubing, and 5 be freezing unit, 21
It is to adjust curved element, 22 be mandrel interface, and 23 be full interface, and 24 be pusher, and 241 be push handle, and 242 be movable part,
243 be the first rigid pipe, and 244 or 244 ' be the second rigid pipe, and 31 be sheath, and 32 be conveying assembly, and 321 be to flow into chamber, and 322 are
Chamber is flowed out, 323 be vacuum chamber, and 33 be full pipe, and 34 be mandrel, and 51 be freezing element, and 52 be sacculus, conductor housing 53.
Specific implementation mode
To make the purpose of this utility model, technical solution and advantage be more clearly understood, develop simultaneously implementation below in conjunction with attached drawing
The utility model is further described in example.It should be appreciated that specific embodiment described herein is only explaining this practicality
It is novel, it is not used to limit the utility model.
Proximal end described in the utility model refers to one end close to operator, and the distal end refers to far from operator
One end.
Embodiment 1：
As shown in Figure 1, a kind of cryoablation conduit with pusher of the utility model, including connection connected in sequence
The proximal end of unit 1, flexible steel in flat section tubing 4, operating unit 2, supply unit 3 and freezing unit 5, the connection unit 1 is arranged one
Or multiple connection plugs, the connection plug are connected with freezing equipment, freezing equipment is by connection unit 1 to freezing unit 5
Refrigerant and vacuum protection are provided, monitor the temperature and pressure signal of freezing unit 5 in real time.The operating unit 2 includes that tune is curved
Element 21, mandrel interface 22, full interface 23 and pusher 24, it is described to adjust curved element 21 that adjust 3 distal end of supply unit
Angle so that freezing unit 5 is connected to close to treatment position, mandrel interface 22 with the proximal end of mandrel 34, in the inner cavity of mandrel 34
Seal wire or conduit are can be inserted into, full interface 23 is connected to the proximal end of full pipe 33, and mandrel interface 22 also provides a liquid injection port, must
It can be with saline injection, contrast agent or other liquid by the liquid injection port when wanting.As shown in figure 4, the supply unit 3 includes
The sheath 31 and conveying assembly 32 being arranged in the sheath 31, full pipe 33 and mandrel 34, the conveying assembly 32 includes true
Cavity 323 and the inflow chamber 321 being arranged in the vacuum chamber 323 and outflow chamber 322.As shown in figure 3, the freezing unit 5
Including sacculus 52 and the freezing element 51 being arranged in the sacculus 52 and conductor housing 53, the sacculus 52 and the full pipe 33
It is in fluid communication, liquid/gas is injected into full pipe 33 by full interface 23 so that sacculus 52 is full, and pusher 24 can
The mobile conveying assembly 32 being arranged inside supply unit 3, to drive the release or compression of freezing element 51, the sacculus 52
For deployable elements, it can be moved to open configuration from contraction state, so as to be contacted with target tissue, conductor housing 53 is soft
Soft polymer tube prevents cryoablation conduit from stabbing blood vessel or tissue.
In one embodiment, as shown in Figure 2 a, the pusher 24 include push handle 241, movable part 242,
First rigid pipe 243 and the second rigid pipe 244, the push handle 241 is rotatable/member of translational, and the movable part 242 is
The external screw thread of sliding block, 242 outer surface of internal thread and the movable part of push 241 inner wall of handle is connected, the work
The distal end of moving part 242 is fixedly connected with first rigid pipe 243 proximally by techniques such as bonding, welding, hot melts, and described
The proximal end of two rigid pipes 244 is sleeved on the distal portions of first rigid pipe 243, and the outer diameter of first rigid pipe 243 omits
Less than the internal diameter of second rigid pipe 244 so that the first rigid pipe 243 can enter described second just in moving process
The inside of property pipe 244, when proximally direction is moved to maximum position, distal portions still remain in first rigid pipe 243
In the proximal part of second rigid pipe 244, the distal portions of second rigid pipe 244 are arranged in the proximal end of sheath 31
Portion, the conveying assembly 32, which is fixed with the lumen wall of first rigid pipe 243 by techniques such as bonding, welding, hot melts, to be connected
It connects, such conveying assembly 32 may be implemented safely to move back and forth in sheath 31, avoids conveying assembly 32 and is freezed in push
Fracture occurs during element 51 or folds the operation risk brought.First rigid pipe 243 and second rigid pipe
244 be stainless steel tube, can also be the rigid pipe of the same materials such as other.The distal end of the conveying assembly 32 and freezing element 51
Proximal end connects, and the proximal part of the conveying assembly 32 is transferred at movable part 242, and the proximal end of the conveying assembly 32 is across soft
Property connecting tube 4 connect with the connection unit 1, when manipulation push handle 241, movable part 242 moves axially in reciprocal fashion, to band
Dynamic first rigid pipe 243, conveying assembly 32 and freezing element 51 realize axially reciprocating, when the movable part 242 is to distally
When mobile, freezing element 51 is pushed to the inside of sacculus 52, and restores presetting form, and the movable part 242 is proximally
When mobile, the inside that freezing element 51 is drawn back into sheath 31 passes through operation to realize the release or recycling of freezing element 51
Pusher 24 may make unfolded state of the freezing element 51 in sacculus 52 and Compression and Expansion into the contraction state in sheath 31
Between switch, so as to using refrigerant provide freezing energy ablation target tissue.
Pulmonary veins isolation is to treat the common art formula of atrial fibrillation, and the birth of cryoablation conduit makes pulmonary vein be electrically isolated
Art is simpler convenient.But since atrium sinistrum space is limited, and cryoablation position is only limitted to Pulmonary venous vestibule, it is desirable that cold
Freeze the preceding hemisphere that energy concentrates on sacculus.When using cryoablation conduit with pusher, led by what is be inserted into mandrel 34
Silk or mapping catheter are as guiding, and the cryoablation distal end of catheter of push belt pusher enters atrium sinistrum, by filling interface
23 inject gas or liquid into full pipe 33 so that sacculus 52 expands.Operation push handle 241 so that freezing element 51 from
The state being compressed in sheath 31 is transferred to the state fully discharged in sacculus 52, when freezing element 51 is abundant with sacculus 52
When contact, curved element 21 is adjusted in adjustment so that freezing unit 5 is bonded with orifices of pulmonary veins to be ablated, operates freezing equipment, injection system
Cryogen realizes cryoablation treatment, to which isolation of pulmonary veins electric signal treats atrial fibrillation.
Embodiment 2：
In another embodiment, as shown in Figure 2 b, it based on embodiment 1, differs only in：Second rigid pipe
244 ' are integrally set the proximal inner in sheath 31.Second rigid pipe 244 ' is stainless steel tube or the same materials such as other
Rigid pipe, this structure can save the length of operating unit 2, avoid operating unit 2 long, patient is facilitated to operate.
The foregoing is merely the preferred embodiment of the utility model, it is not limited to the utility model, it is all in the utility model
All any modification, equivalent and improvement etc., should be included within the protection domain of the utility model made by within spirit and principle.
Claims (7)
1. a kind of cryoablation conduit with pusher, it is characterised in that：The pusher (24) includes push handle
(241), movable part (242), the first rigid pipe (243) and the second rigid pipe (244,244 '), the push handle (241) and institute
Movable part (242) connection is stated, the distal end of the movable part (242) connect with the proximal end of first rigid pipe (243), and described the
The proximal end of two rigid pipes (244,244 ') is sleeved on the distal portions of first rigid pipe (243), and conveying assembly (32) is set
It sets in first rigid pipe (243), the distal end of the conveying assembly (32) is connect with the proximal end of freezing element (51), described
The proximal part of conveying assembly (32) is connect with the movable part (242), and the operation push handle (241) can drive described
Freezing element (51) moves axially in reciprocal fashion.
2. the cryoablation conduit according to claim 1 with pusher, it is characterised in that：Second rigid pipe
(244) distal portions are arranged on the proximal inner of sheath (31).
3. the cryoablation conduit according to claim 1 with pusher, it is characterised in that：Second rigid pipe
(244 ') are integrally set the proximal inner in sheath (31).
4. the cryoablation conduit according to claim 1 with pusher, it is characterised in that：The conveying assembly (32)
It is fixedly connected with the lumen wall of first rigid pipe (243).
5. the cryoablation conduit according to claim 1 with pusher, it is characterised in that：First rigid pipe
(243) outer diameter is less than the internal diameter of second rigid pipe (244,244 ').
6. the cryoablation conduit according to claim 1 with pusher, it is characterised in that：The movable part (242)
It is sliding block.
7. the cryoablation conduit according to claim 1 with pusher, it is characterised in that：The conveying assembly (32)
The switching proximally by the movable part (242) connect with connection unit (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721128714.6U CN207785273U (en) | 2017-09-05 | 2017-09-05 | A kind of cryoablation conduit with pusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721128714.6U CN207785273U (en) | 2017-09-05 | 2017-09-05 | A kind of cryoablation conduit with pusher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207785273U true CN207785273U (en) | 2018-08-31 |
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ID=63274856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721128714.6U Active CN207785273U (en) | 2017-09-05 | 2017-09-05 | A kind of cryoablation conduit with pusher |
Country Status (1)
| Country | Link |
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| CN (1) | CN207785273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111887972A (en) * | 2020-08-12 | 2020-11-06 | 上海心玮医疗科技有限公司 | Freezing sacculus pipe of refrigeration uniformity |
-
2017
- 2017-09-05 CN CN201721128714.6U patent/CN207785273U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111887972A (en) * | 2020-08-12 | 2020-11-06 | 上海心玮医疗科技有限公司 | Freezing sacculus pipe of refrigeration uniformity |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.15, Lane 3399, Kangxin highway, Pudong New Area, Shanghai, 201321 Patentee after: Kangfeng Biotechnology (Shanghai) Co.,Ltd. Address before: No.15, Lane 3399, Kangxin highway, Pudong New Area, Shanghai, 201321 Patentee before: CRYOFOCUS MEDTECH (SHANGHAI) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |