CN209695281U - A kind of embolism spring ring conveying device escape wire position limiting structure - Google Patents
A kind of embolism spring ring conveying device escape wire position limiting structure Download PDFInfo
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- CN209695281U CN209695281U CN201821516678.5U CN201821516678U CN209695281U CN 209695281 U CN209695281 U CN 209695281U CN 201821516678 U CN201821516678 U CN 201821516678U CN 209695281 U CN209695281 U CN 209695281U
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- spring ring
- wire
- escape
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Abstract
A kind of embolism spring ring conveying device escape wire position limiting structure, it includes escape wire (9) and limit plunger (7), limit plunger (7) is mounted on push rod (2) remote location, it is characterized in that being equipped with the position-limit mechanism for preventing escape wire from excessively releasing to match with limit plunger (7) on escape wire (9), the position-limit mechanism is the retention bead on escape wire (9) surface, and the outer diameter of the retention bead is greater than the through-hole on limit plunger (7).The utility model structure is simple, can increase substantially the safety of conveying device.
Description
Technical field
The utility model relates to a kind of medical instrument, especially a kind of hemangioma cure instrument is specifically a kind of
The predetermined position of people's body vessel place embolism spring ring with freeing the embolism spring ring conveying device of structure with freeing
Silk position limiting structure.
Background technique
For many years, the flexible sheath that imports is used for always the various medical instruments of intravascular placement in human body.Such medical treatment
Instrument includes expanded spheres, developer solution, liquid medicine and various types of locking devices such as ball and embolism spring ring.Such as beauty
State's patent 5,108,407 and United States Patent (USP) 5,122,136, these patents, which disclose this device based on importing sheath, to be used to
It places embolism spring ring and treats aneurysm to the predetermined position of human vas, or in specific position sealing blood vessels.
Embolism spring ring, which is placed on the mode in blood vessel, can be spiral way, and random coil mode or spring ring are again
The of this sort spring ring mode such as secondary winding spring circle.Such as 5,382,259 public affairs of United States Patent (USP) 5,334,210 and United States Patent (USP)
Different spring ring configurations is opened.Embolism spring ring has the special of good biocompatibility usually by radip-opaque
Metal material, such as the composition of alloy of platinum, gold, tungsten, NiTi or these metals.In general, several embolism spring rings are placed on one
Scheduled position promotes thrombosis to block blood to flow through blood vessel or artery tumor in a specified pattern.
In general, currently, spring ring ways of relief has, hydrolysis is de-, electrolysis is de-, hot melt is freed and machinery frees four kinds of masters
The mode wanted.De- hydrolysis is that after filling solvent into conveying lever, the purpose of release spring circle is realized with dissolution characteristics, it exists
The unstable problem of ways of relief and the easy increase vascular pressure of injection solvent, if solvent insufficient infusion does not reach bullet again
The position that spring coil is freed, it is difficult to which realization is freed.De- electrolysis is that spring ring passes through together with electric welding between seal wire.It is welded cold
But welding portion can be uneven after, is easy to produce relatively high voltage, and spring ring is caused to power on the time freed from importing sheath not
It is easy to control, is electrolysed the de- time from 30 seconds to a few minutes etc..Hot melt is freed, and needs to introduce electric current, electric wire and electrode etc.,
It is that thermo-fuse is fused when heat reaches a certain level to realize that spring ring is freed by electric energy production heat.Hot melt
When can generate smoke event, lead to the intracorporal local damage of people, increase the pain of patient.Machinery frees current main stream approach
It is section cascaded, that is, increases by a movable connecting rod, movable connecting rod end is spherical characteristic, and movable connecting rod head end is with spring ring
Connection, escape wire are to be put into conveying together with movable connecting rod assembling to import sheath, and spring ring solution is realized by withdrawing escape wire
It is de-.
In the past, embolism spring ring is placed on the distal end for importing sheath.When the distal end for importing sheath is properly positioned, spring
Circle can release the end for importing sheath by push rod, in desired position release spring circle.This placement embolism spring
The process of circle is carried out under perspective, can monitor the movement of spring ring by the vascular of body in this way, and by spring
Circle is placed on desired position.
United States Patent (USP) 5,263,964 is disclosed another method and is related to being led using glue or welding spring ring to be connected to
On silk, and seal wire be placed on it is flexible import it is intrathecal, for spring ring to be navigated to the pre-selected locations in blood vessel.Once spring
Circle is in required position, and spring ring is held in place by importing sheath, and seal wire is drawn out, so that spring ring be made to be detached from seal wire
And it is discharged from importing in sheath.
It is in the distal end for importing sheath with one that United States Patent (USP) 5,350,397, which discloses the localization method of another spring ring,
Connector, for maintaining a ball.The diameter of this ball is typically larger than the outer diameter of spring ring, is placed on and imports sheath distal
In the inner cavity of connector, it then will import sheath and be moved in blood vessel, so that spring ring is placed on desired position.Once reaching
The position, in end, ball is released connector for by the proximate promotion by importing sheath by the push rod with piston, with
Just in desired locations release spring circle.
It is using heat-fusible that United States Patent (USP) 5,108,407, which discloses and places another method of embolism spring ring in the blood vessels,
Spring ring is maintained at the distal end for importing sheath by the bonding freed.This system transmits laser energy by using fiber optic cables, with
Apply heat to abutting edge, so as to from import sheath end release spring circle.
It includes an importing sheath, importing sheath tool that United States Patent (USP) 6,113,622, which discloses another spring ring conveying device,
Have through the lumen and remote spring circle for importing sheath whole length, for keeping spring ring so that spring ring is located in pre-determined bit
It sets.The distal tip for importing sheath is made of a kind of special material, it is characterised in that when the lumen for importing sheath is pressurized, distal tip
Hold radial dilatation in predetermined position release spring circle.
United States Patent (USP) 5,925,059 discloses another spring ring conveying device joined relieving mechanism on spring ring.
Interlocking end on spring ring has similar interlocking mechanism in push bar assembly.The control silk extended through locking mechanism is by bullet
Spring coil is fixed in push bar assembly.Push bar assembly and spring ring are initially positioned in the lumen for importing sheath.When spring ring quilt
When release importing sheath end is placed, control line is retracted, and spring ring is detached from from push bar assembly.
Another spring ring conveying device of United States Patent (USP) 2002/0165569 includes being releasably attached to push bar assembly
Distal end and the embolization device that is held in position with connector screw thread or fiber.Fiber, which passes through, can be activated to cut off connector fibre
The cutting assembly of dimension.Once connector fiber is cut off, embolization device is released.
United States Patent (USP) 2004/0034363 discloses another spring ring conveying device and combines one with stretch-proof group
The embolization device of part.Stretch-proof component is distally connected to embolism spring ring, stretch-proof component proximally by bonding agent or company
It is connected to the connection fiber of push bar assembly, is releasably attached in push bar assembly, and can be discharged by applying heat.
It includes a push silk and a rigidity that United States Patent (USP) 6,203,547, which discloses another spring ring conveying device,
Waveform end, it is connected on embolism spring ring and is placed in the inner cavity for importing sheath.Before spring ring is by importing sheath
Into until reaching the predetermined position in blood vessel, push silk is retracted at this time, and embolism spring ring is released.
United States Patent (USP) 11/143,052 discloses another for placing the further of stretch-proof embolization device or spring ring
Embolism spring ring conveying device includes that conveying imports sheath and flexible push bar assembly.Embolization device is kept by an interlocking mechanism,
The mechanism includes a release component, which passes through the hole in fastener.Engagement of loops on fastener and embolization device.
When release component is exited from hole, stretch-proof embolization device is released..
In view of the above-mentioned problems, applicant devises, one kind is shown in Fig. 3 to be placed on embolization device in human vas
Presumptive area, and realize accurate positioning, free quick embolism spring ring conveying device, escape wire therein is worn in order to prevent
Cross the too long damage caused to blood vessel of distance of baffle ring, it is necessary to which corresponding position limiting structure is set.
Utility model content
The purpose of this utility model be existing embolism spring ring escape wire easily occur excessively be pierced by baffle ring aiming at the problem that,
Design a kind of embolism spring ring conveying device escape wire position limiting structure.
The technical solution of the utility model first is that:
A kind of embolism spring ring conveying device escape wire position limiting structure, it includes escape wire 9 and limit plunger 7, limit plunger 7
It is mounted on 2 remote location of push rod, it is characterized in that be equipped on escape wire 9 prevents escape wire from excessively pushing away with what limit plunger 7 matched
Position-limit mechanism out, the position-limit mechanism are the retention bead on 9 surface of escape wire, and the outer diameter of the retention bead is greater than limit plunger
Through-hole on 7.
The technical solution of the utility model second is that:
A kind of embolism spring ring conveying device escape wire position limiting structure, it includes escape wire 9 and limit plunger 7, limit plunger 7
It is mounted on 2 remote location of push rod, it is characterized in that be equipped on escape wire 9 prevents escape wire from excessively pushing away with what limit plunger 7 matched
Position-limit mechanism out, the position-limit mechanism is welded by two escape wire dislocation, wherein an escape wire passes through limit plunger 7
After be then passed through baffle ring 8, the end and limit plunger end face of another escape wire offset to limit another escape wire and be pierced by baffle ring
Length.
The utility model has the beneficial effects that
The utility model structure is simple, easily manufactured, can increase substantially the safety of operation.
Detailed description of the invention
Fig. 1 is one of position limiting structure schematic diagram of the utility model.
Fig. 2 is the two of the position limiting structure schematic diagram of the utility model.
Fig. 3 is the structural schematic diagram for being equipped with the embolism spring ring conveying device of the utility model position limiting structure.
Fig. 4 is the relieving mechanism schematic diagram of the utility model.
In figure: 1 is imports sheath, and 2 be push rod, and 3 be embolism spring ring, and 4 be relieving mechanism, and 5 be label spring ring (development
Point), 6 be heat-shrink tube, and 7 be limit plunger, and 8 be baffle ring, and 9 be escape wire, and 10 be clear opening, and 11 be release ball.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
Embodiment one
As shown in Figure 1.
A kind of embolism spring ring conveying device escape wire position limiting structure, it includes escape wire 9 and limit plunger 7, limit plunger 7
It is mounted on 2 remote location of push rod, the limit for preventing escape wire from excessively releasing to match with limit plunger 7 is equipped on escape wire 9
Mechanism, the position-limit mechanism are the retention bead on 9 surface of escape wire, and the outer diameter of the retention bead is greater than logical in limit plunger 7
Hole.
Embodiment two
As shown in Figure 2.
A kind of embolism spring ring conveying device escape wire position limiting structure, it includes escape wire 9 and limit plunger 7, limit plunger 7
It is mounted on 2 remote location of push rod, it is characterized in that be equipped on escape wire 9 prevents escape wire from excessively pushing away with what limit plunger 7 matched
Position-limit mechanism out, the position-limit mechanism is welded by two escape wire dislocation, wherein an escape wire passes through limit plunger 7
After be then passed through baffle ring 8, the end and limit plunger end face of another escape wire offset to limit another escape wire and be pierced by baffle ring
Length.
Details are as follows:
As shown in Figure 3,4.
Fig. 3 is a kind of embolism spring ring conveying device schematic diagram for being equipped with the utility model position-limit mechanism, it includes leading
Enter sheath 1 and push rod 2.The label spring ring 5 of development is installed, push rod 2 is located at the proximal end imported outside sheath 1 in push rod 2
Part is equipped with several circle snap slots.The distal end insertion of push rod 2 imports in sheath 1 and is connected with embolism spring ring 3, the push
Bar 2, which is located on the distal end imported in sheath 1, is equipped with baffle ring 8, and baffle ring 8 is equipped with clear opening 10(such as close to the distal end side of push rod
Fig. 4), the proximal end of embolism spring ring 3 is connected with release ball 11(such as Fig. 4), which is located at 10 left side of clear opening and passes through
Escape wire 9 realizes the positioning in baffle ring 8, and the proximal end of escape wire 9, which passes through push rod 2 and is fixed on push rod, to be located at outside importing sheath
Portion；Push rod distal end, baffle ring 8, release ball 11 and the escape wire 9 constitutes embolism spring ring relieving mechanism 4.Described
Limit plunger 7 is installed in push rod 2, the limit for preventing escape wire from excessively releasing to match with limit plunger 7 is equipped on escape wire 9
Mechanism, the position-limit mechanism are the retention bead on 9 surface of Fig. 1 escape wire, and the outer diameter of the retention bead is greater than in limit plunger 7
Through-hole.The position-limit mechanism can be also welded to be shown in Fig. 2 by two escape wire dislocation, wherein an escape wire passes through
Baffle ring 8 is then passed through after limit plunger 7, the end of another escape wire is offseted with limit plunger end face to limit another escape wire and be pierced by
The length of baffle ring.Escape wire can be fabricated by one of carbon steel, stainless steel, NiTi and its mixture.On escape wire surface
The PTFE plastic tube for reducing friction is cased with equipped with the PTFE coating or escape wire outer surface for reducing friction.
The parts not involved in the utility model is the same as those in the prior art or can be realized by using the prior art.
Claims (2)
1. a kind of embolism spring ring conveying device escape wire position limiting structure, it includes escape wire (9) and limit plunger (7), limit
Plug (7) is mounted on push rod (2) remote location, it is characterized in that be equipped on escape wire (9) prevents from solving with what limit plunger (7) matched
The position-limit mechanism that running is excessively released, the position-limit mechanism are the retention bead on escape wire (9) surface, the retention bead it is outer
Diameter is greater than the through-hole on limit plunger (7).
2. a kind of embolism spring ring conveying device escape wire position limiting structure, it includes escape wire (9) and limit plunger (7), limit
Plug (7) is mounted on push rod (2) remote location, it is characterized in that be equipped on escape wire (9) prevents from solving with what limit plunger (7) matched
The position-limit mechanism that running is excessively released, the position-limit mechanism is welded by two escape wire dislocation, wherein an escape wire
It is then passed through after limit plunger (7) baffle ring (8), the end and limit plunger end face of another escape wire offset to limit another solution
Running is pierced by the length of baffle ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821516678.5U CN209695281U (en) | 2018-09-17 | 2018-09-17 | A kind of embolism spring ring conveying device escape wire position limiting structure |
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| CN201821516678.5U CN209695281U (en) | 2018-09-17 | 2018-09-17 | A kind of embolism spring ring conveying device escape wire position limiting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114469231A (en) * | 2022-01-27 | 2022-05-13 | 南京思脉德医疗科技有限公司 | Embolic coil conveying system |
-
2018
- 2018-09-17 CN CN201821516678.5U patent/CN209695281U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114469231A (en) * | 2022-01-27 | 2022-05-13 | 南京思脉德医疗科技有限公司 | Embolic coil conveying system |
| CN114469231B (en) * | 2022-01-27 | 2024-04-05 | 南京思脉德医疗科技有限公司 | Embolic coil conveying system |
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