CN203425362U - Medical guide wire - Google Patents
Medical guide wire Download PDFInfo
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- CN203425362U CN203425362U CN201320223562.3U CN201320223562U CN203425362U CN 203425362 U CN203425362 U CN 203425362U CN 201320223562 U CN201320223562 U CN 201320223562U CN 203425362 U CN203425362 U CN 203425362U
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- mandrel
- head end
- tinsel
- extension
- seal wire
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Abstract
A medical guide wire comprises a long bar-shaped mandrel with flexibility, a guide wire lead end positioned at the top of the mandrel, and a coating layer made of a flexible material. The guide wire head end is hollow out and is shaped likes a spindle with a smooth surface. The guide wire head end is equipped with flexible bar-shaped lobes arranged in an axial direction. The advantages of the medical guide wire are that pressure of the guide wire on a cavity can be buffered through deformation of the guide wire itself, risks of perforation into the cavity are reduced, and risks of clinic operations are minimized.
Description
Technical field
This utility model relates to medical instruments field, particularly a kind of medical guiding wire for endoscopic surgery.
Background technology
When catheter apparatus being inserted in the organism nature tracts such as digestive tract, blood vessel, in order to arrive more smoothly disease position, this catheter instrumentation seal wire need to be guided to the target site of organism tube chamber.Seal wire inserts in conduit and uses.In addition, also use seal wire to carry out observation and the disposal of the organism tube chamber of endoscope.During use, seal wire is inserted in the guidewire lumen of endoscope, seal wire by the supporting instrument guide of endoscope to target location.
The seal wire of mentioning in International Application No. WO 2005044358, its material of main part is all a tinsel with certain toughness and intensity, the point diameter of its seal wire is all generally the ball shape of 1mm left and right, and the front end of seal wire is used soft macromolecular material or ductile metal spring housing in outside.The shortcoming of this seal wire is: because the natural tract of organism has a lot of gauffers, even if front end is coated with flexible material, if the head end of seal wire is inserted into the lowest point of gauffer and is absorbed in the time of can not skidding off in it, if doctor firmly advances seal wire again, the head end of seal wire is because being more carefully easy to puncture tract wall, cause perforation, clinical application risk is very large.
Chinese patent application 200380105092.X has disclosed a kind of guide wire for medical use, the metal core wire being covered by resin by surface forms, have and bend to round and smooth curvilinear leading section, the direction extended line of this leading section and seal wire baseline angulation are 40 ~ 70 degree.The shortcoming of this seal wire is, doctor, when using seal wire, is to come repeatedly seal wire to be extracted, inserted according to the feedback of the faint power of seal wire be passed back, until position, seal wire directed overshoot position.Therefore, although the seal wire of head-bent easily enters tract in direction of insertion, while extracting, sweep is also easily hooked into tract wall, causes tract perforation, the having a big risk of clinical use.
Utility model content
The shortcoming that easily causes tract perforation in order to overcome existing medical guiding wire, this utility model provides a kind of tract perforation risk little medical guiding wire.
Medical guiding wire, comprise and there is flexible strip mandrel, be positioned at the seal wire head end of mandrel head and be coated on the clad that mandrel is outer, made by flexible material, it is characterized in that: seal wire head end is the round and smooth spindle of hollow out and surface, this seal wire head end forms by having flexible bar shaped lobe, and bar shaped lobe arranges vertically.
Further, seal wire head end is fixedly connected with mandrel by connector, and clad covers the connecting portion of seal wire head end and mandrel.
Further, on bar shaped lobe, be coated with the sleeve pipe of macromolecular material or by fine wire, be wound in the tinsel sleeve pipe of spring tubulose; On sleeve pipe, be coated with the lubricant coating of hydrophilic nmature or there is the lubriation materials such as PTFE of high-lubricity matter; Bar shaped lobe surface-coated has lubricant coating.
Concrete structure as follows: described bar shaped lobe is a tinsel, and two terminations wiry and mandrel are fixed, and tinsel middle bent forms the part contact with tract.Bending section rounding off wiry.
Connector is sleeve, and mandrel and termination wiry are all socketed in sleeve, and sleeve is by welding or be adhesively fixed mandrel and tinsel.
Quantity wiry is one, or two, or more than two.
Quantity wiry is two or two when above, and tinsel is angled to be fixedly connected with mandrel.When tinsel is two, two one metal wire quadratures.The position that tinsel intersects can be connected, and can be also disjunct.
The concrete structure of another kind of head end is as follows: described bar shaped lobe is laths of metal, and seal wire head end has at least two laths of metals, and all laths of metals are from same center to external radiation, laths of metal and center one, and free end and the mandrel of laths of metal are fixed.The laths of metal spindle ，Gai center that the is round and smooth part for contacting with tract that is stamped.
Laths of metal is uniformly distributed along center.
Connector is sleeve, and mandrel and laths of metal are all socketed in sleeve, and sleeve is by welding or be adhesively fixed mandrel and laths of metal.
The concrete structure of another kind of head end is as follows: described bar shaped lobe is tinsel, seal wire head end comprises at least two one metal wires, the tinsel formation spindle that outwards arches upward, and one end of every one metal wire is fixedly connected with mandrel, the other end and other tinsel are fixed on a bit, and fixing point wiry is round and smooth.
Between tinsel for being welded and fixed or being adhesively fixed.Fixing point becomes round and smooth front end after polishing, and this fixing point is as the part contacting with tract.
The concrete structure of another kind of head end is as follows: the head end of mandrel has ，Gai extension, extension as bar shaped lobe, and free end and the mandrel of extension are fixed, the middle bent of extension.This bending section is as the part contacting with tract.
This extension is by levigate rear formation of mandrel.Or this extension forms by mandrel cutting is rear.The diameter of extension is less than or equal to half of axle diameter.Connector is sleeve, extension and connector interference fit.Also can extension and the head end interference fit of clad, now, the head end of clad is as connector.
In order to make this head end have stereochemical structure, seal wire head end also has an additional metal silk, and described connector is sleeve, and the two ends of additional metal silk are fixedly connected with connector respectively, the middle bent of additional metal silk, additional metal silk and extension quadrature.
The concrete structure of another kind of head end is as follows: mandrel has extension, and this extension cuts at least two isodiametric lines of formation vertically, and the head end of all lines is fixed on a bit, and fixing point is round and smooth, and the tail end of extension is positioned at clad.The head end interference fit of extension and clad, the head end of clad is as connector.
When head end of the present utility model enters in the natural tract of organism, if head end runs into gauffer, because head end is round and smooth, therefore can not cause the damage of tract wall.And, because head end is hollow spindle, therefore, when head end runs into gauffer and during pressurized, deformation can occur head end self, plays the effect of compensator or trimmer pressure, reduce the risk of tract perforation; Head end axial length diminishes simultaneously, and it is large that radial width becomes, and makes head end more easily from fold place, depart from and enter in normal tract.In addition, when head end enters in the narrow positions of tract, wire rod is compressive deformation inwardly, and head end is passed through smoothly.
The utlity model has and can cushion the pressure of seal wire to tract by self deformation, reduce the risk of tract perforation, reduce the advantage of clinical operation risk.
Accompanying drawing explanation
Schematic diagram when Fig. 1 is this utility model process loculus road.
Fig. 2 is the schematic diagram of this utility model while running into tract gauffer.
Fig. 3 is the schematic diagram of this utility model head end distortion while running into tract gauffer.
Fig. 4 is the schematic diagram that this utility model normally enters tract.
Fig. 5 the utlity model has the schematic diagram that the first head end has an one metal wire.
Fig. 6 the utlity model has the schematic diagram that the first head end has two one metal wires.
Fig. 7 is that the A-A of Fig. 6 is to schematic diagram.
Fig. 8 is the schematic diagram that the utlity model has the second head end.
Fig. 9 is that the B-B of Fig. 8 is to schematic diagram.
Figure 10 is the three valve structure schematic diagrams that the utlity model has the third head end.
Figure 11 is that the C-C of Figure 10 is to schematic diagram.
Figure 12 is the pintongs structural representation that the utlity model has the third head end.
Figure 13 is that the D-D of Figure 10 is to schematic diagram.
Figure 14 is the schematic diagram that the 4th kind of head end of the levigate formation in extension and connector are sleeve.
Figure 15 is the schematic diagram that extension the 4th kind of head end of cutting formation and connector are sleeve.
Figure 16 is the schematic diagram that the 4th kind of head end of the levigate formation in extension and connector are clad.
Figure 17 is that extension mill cuts into the schematic diagram that the 4th kind of head end and connector are clad.
Figure 18 is the schematic diagram with the 4th kind of head end of additional metal silk.
Figure 19 is the pintongs structural representation of the 5th kind of head end.
Figure 20 is that the E-E of Figure 19 is to schematic diagram.
Figure 21 is three valve structure schematic diagrams of the 5th kind of head end.
Figure 22 is that the F-F of Figure 20 is to schematic diagram.
The specific embodiment
In conjunction with Fig. 1-7
Medical guiding wire, comprise and there is flexible strip mandrel 1, be positioned at the seal wire head end 2 of mandrel 1 head and be coated on the clad 3 that mandrel 1 is outer, made by flexible material, seal wire head end 2 is the round and smooth spindle of hollow out and surface, this seal wire head end 2 forms by having flexible bar shaped lobe, and bar shaped lobe arranges vertically.Clad 3 can be to be made by macromolecular material, can be also to make as the other materials that bourdon tube etc. has elasticity and a low-friction coefficient.Having of clad 3 is beneficial to the resistance that reduces to push seal wire, makes doctor obtain better feel.
Seal wire head end 2 is fixedly connected with mandrel 1 by connector 4, and clad 3 covers the connecting portion of seal wire head end 2 and mandrel 1.
On bar shaped lobe, be coated with macromolecular material sleeve pipe or by fine wire, be wound in the tinsel sleeve pipe of spring tubulose; Polymer surface is coated with the lubricant coating of hydrophilic nmature or has the lubriation materials such as PTFE of high-lubricity matter.
This macromolecular material sleeve pipe and outside lubricant coating, cover hydrophilic coating as TPU repastes, or directly on bar shaped lobe, apply PTEE material.
Can also on bar shaped lobe, be wound around the bourdon tube being coiled into by developing material.Or on bar shaped lobe, add the metal level of one deck good springiness, as stainless steel spring pipe, platinum bourdon tube etc., to strengthen the deformation behavior ability of seal wire head end and to strengthen the development effect under X-ray.
The concrete structure of head end is as follows: bar shaped lobe is tinsel 2A, and two terminations wiry and mandrel 1 are fixing, and tinsel 2A middle bent forms the part contacting with tract A.The bending section rounding off of tinsel 2A.The widest position D that tinsel 2A bending forms is afterwards 1.2mm ~ 2mm.The diameter d of stem stem is 0.5mm ~ 1mm.The length of seal wire head end is 3mm ~ 6mm.
The quantity of tinsel 2A is one, as shown in Figure 5.Or the quantity of tinsel 2A is two, as shown in Figure 6.Or the quantity of tinsel 2A is more than two.
When the quantity of tinsel 2A is one, head end becomes the obtuse structure of plane, when head end is subject to extruding force radially, can be retracted to minimum diameter, is conducive to the narrow positions by tract.
The quantity of tinsel 2A is two or two when above, and tinsel 2A is angled to be fixedly connected with mandrel.When tinsel 2A is two, as shown in Figure 7, two one metal wire 2A quadratures.The position that tinsel 2A intersects can be connected, and can be also disjunct.While having two above tinsel 2A, seal wire head end 2 is three-dimensional shape, and the head end of three-dimensional shape is compared more easily to deviate from from fold place with the head end of flat shape.
When seal wire head end enters in the natural tract A of organism, if head end runs into gauffer B, the bending section rounding off of tinsel 2A, therefore can not cause the damage of tract wall.When head end runs into gauffer B and during pressurized, can there is deformation and present axial length and diminish in tinsel 2A self, and it is large that radial width becomes, and plays the effect of compensator or trimmer pressure, reduces the risk of tract A perforation; Tinsel 2A deformation simultaneously makes head end more easily from gauffer B, depart from and enter in normal tract A.In addition, in the time of in head end enters minor diameter tract A, tinsel 2A is compressive deformation inwardly, and head end is passed through smoothly.When tinsel 2A crosses after minor diameter tract, tinsel 2A recovers deformation automatically.
, can there is deformation when head end is obstructed and carry out compensator or trimmer pressure in the seal wire in the present embodiment, have the risk that can reduce tract perforation automatically, improves the advantage of the safety of clinical operation.
In conjunction with Fig. 8,9
The present embodiment is that from the difference part of embodiment 1 concrete structure of head end is different.Concrete structure is as follows: as shown in Figure 9, bar shaped lobe is laths of metal 2B, and seal wire head end 2 has at least two laths of metal 2B, and all laths of metal 2B are from same center C to external radiation, laths of metal 2B and center C one, the free end of laths of metal 2B and mandrel 1 are fixing.Laths of metal 2B is stamped and is round and smooth spindle, and this center C is the part contacting with tract A.Laths of metal 2B is uniformly distributed along center C.Connector 4 is sleeve, and mandrel 1 and laths of metal 2B are all socketed in sleeve, and sleeve is by welding or be adhesively fixed mandrel 1 and laths of metal 2B.All the other structures are all identical with embodiment 1.
In the present embodiment, adopt integrated laths of metal punching press to form seal wire head end, head end is more round and smooth, more easily enters organism tract, avoids damaging tract wall.Laths of metal can be used as standard component and produces, and can reduce the cost of the manufacturing, and Sheet Metal Forming Technology is simple.
In Fig. 8, be the schematic diagram of the pintongs structure while having 4 laths of metals, seal wire head end can also be made three valve structures or two valve structures.Wherein ideal with three valve structures, because three valve structures are three-dimensional shape, after closing up, compression can obtain best diameter again, be more conducive to the narrow positions by tract.
Figure 10-13
The present embodiment is that from the difference part of embodiment 1 concrete structure of head end is different.Concrete structure is as follows: described bar shaped lobe is tinsel 2C, seal wire head end 2 comprises at least two one metal wire 2C, the tinsel 2C formation spindle that outwards arches upward, one end of every one metal wire 2C is fixedly connected with mandrel 1, the other end and other tinsel 2C are fixed on a bit, and the fixing point of tinsel 2C is round and smooth.All the other structures are all identical with embodiment 1.
Between tinsel 2C for being welded and fixed or being adhesively fixed.Fixing point becomes round and smooth front end after polishing, and this fixing point is as the part contacting with tract A.
Between tinsel 2C welding or be adhesively fixed after need fixing point grinding process to obtain round and smooth front end, thereby avoid damaging tract wall.
Be the three valve structure head ends that form while thering is three one metal wire 2C as shown in FIG. 10 and 11.Figure 12,13 is depicted as the pintongs structure head end forming while having four one metal wire 2C.Certainly, also can adopt two one metal wire 2C to form the head end of two valve structures.Wherein ideal with three valve structures, because three valve structures are three-dimensional shape, after closing up, compression can obtain best diameter again, be more conducive to the narrow positions by tract.
The present embodiment is used welded wire or bonding formation seal wire head end, and tinsel is preshaped is circular arc, then by the fusiform seal wire head end of the fixing formation of tinsel, consumptive material wiry is few, has advantages of cost-saving.
Figure 14-18
The present embodiment is that from the difference part of embodiment 1 concrete structure of head end is different.Concrete structure is as follows: the head end of mandrel 1 has 2D，Gai extension, extension 2D as bar shaped lobe, and the free end of extension 2D and mandrel 1 are fixing, the middle bent of extension 2D.This bending section is as the part contacting with tract A.All the other structures are all identical with embodiment 1.
This extension 2D is by levigate rear formation of mandrel 1, as shown in figure 14.Or this extension 2D is by rear the formation as shown in figure 15 of mandrel 1 cutting.The diameter of extension 2D is less than or equal to half of mandrel 1 diameter.Connector 4 is sleeve, and extension 2D and connector 4 interference fit, as shown in Figure 14,15.Also can extension 2D and the head end interference fit of clad 3, now, the head end of clad 3 is as connector 4, as shown in Figure 16,17.
In order to make this head end there is stereochemical structure, as shown in figure 18, seal wire head end 2 also has an additional metal silk 2E, described connector 4 is sleeve, the two ends of additional metal silk 2E are fixedly connected with connector 4 respectively, the middle bent of additional metal silk 2E, additional metal silk 2E and extension 2D quadrature.The seal wire head end of stereochemical structure, when running into gauffer, can strut gauffer after head end deformation, and the seal wire head end of comparing plane more easily departs from gauffer.
In the present embodiment, adopt the extension of mandrel itself to make seal wire head end, have advantages of that the connectivity robustness of seal wire head end and mandrel is good.
Embodiment 5
Figure 19-22
The present embodiment is that from the difference part of embodiment 1 concrete structure of head end is different.Concrete structure is as follows: mandrel 1 has extension, and this extension cuts at least two isodiametric lines 2F of formation vertically, and the head end of all lines is fixed on a bit, and fixing point is round and smooth, and the tail end of extension is positioned at clad 3.The head end interference fit of extension and clad 3, the head end of clad 3 is as connector 4.All the other structures are all identical with embodiment 1.
The extension that Figure 19,20 is depicted as mandrel is cut into the schematic diagram of the pintongs structure head end of the timesharing such as 4.The extension that Figure 21,22 is depicted as mandrel is cut into the schematic diagram of three valve structure head ends of 3 deciles.Between lines 2F, by welding or being adhesively fixed, fixing point becomes round and smooth front end after polishing, and this fixing point is as the part contacting with tract A.
Minute cuttings such as mandrel extension are formed to seal wire head end, have between seal wire head end and mandrel and fix without weld or bonding etc., and the advantage being connected firmly.In this structure, only need make the outer end of clad covering extension, without setting up independent connector, also without welding or bonding processing, simplification of flowsheet.
Content described in this description embodiment is only enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also and the equivalent technologies means that can expect according to this utility model design in those skilled in the art.
Claims (10)
1. medical guiding wire, comprise and there is flexible strip mandrel, be positioned at the seal wire head end of mandrel head and be coated on the clad that mandrel is outer, made by flexible material, it is characterized in that: seal wire head end is the round and smooth spindle of hollow out and surface, this seal wire head end forms by having flexible bar shaped lobe, and bar shaped lobe arranges vertically.
2. medical guiding wire as claimed in claim 1, is characterized in that: seal wire head end is fixedly connected with mandrel by connector, and clad covers the connecting portion of seal wire head end and mandrel.
3. medical guiding wire as claimed in claim 2, it is characterized in that: bar shaped lobe is coated with flexible layer, flexible layer is for to make sleeve pipe by macromolecular material, and this outside of sleeve is coated with lubricant coating or this flexible layer is by fine wire, to be wound in the tinsel sleeve pipe of spring tubulose; Bar shaped lobe surface-coated has lubricant coating.
4. the medical guiding wire as described in one of claim 1-3, is characterized in that: described bar shaped lobe is tinsel, and two terminations wiry and mandrel are fixed, and tinsel middle bent forms the part contacting with tract, bending section rounding off wiry.
5. medical guiding wire as claimed in claim 4, is characterized in that: connector is sleeve, and mandrel and termination wiry are all socketed in sleeve, and sleeve is by welding or be adhesively fixed mandrel and tinsel; Quantity wiry is one, or two, or more than two.
6. the medical guiding wire as described in one of claim 1-3, it is characterized in that: described bar shaped lobe is laths of metal, and seal wire head end has at least two laths of metals, and all laths of metals are from same center to external radiation, laths of metal and center one, free end and the mandrel of laths of metal are fixed.
7. the medical guiding wire as described in one of claim 1-3, it is characterized in that: described bar shaped lobe is tinsel, seal wire head end comprises at least two one metal wires, the tinsel formation spindle that outwards arches upward, one end of every one metal wire is fixedly connected with mandrel, the other end and other tinsel are fixed on a bit, and fixing point wiry is round and smooth.
8. medical guiding wire as claimed in claim 2 or claim 3, it is characterized in that: the head end of mandrel has by levigate rear the formation or the rear extension forming of mandrel cutting of mandrel, this extension is as bar shaped lobe, and free end and the mandrel of extension are fixed, the middle bent of extension.
9. medical guiding wire as claimed in claim 8, it is characterized in that: seal wire head end also has an additional metal silk, described connector is sleeve, and the two ends of additional metal silk are fixedly connected with connector respectively, the middle bent of additional metal silk, additional metal silk and extension quadrature.
10. the medical guiding wire as described in one of claim 1-3, it is characterized in that: mandrel has extension, this extension cuts at least two isodiametric lines of formation vertically, and the head end of all lines is fixed on a bit, fixing point is round and smooth, and the tail end of extension is positioned at clad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320223562.3U CN203425362U (en) | 2013-04-27 | 2013-04-27 | Medical guide wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320223562.3U CN203425362U (en) | 2013-04-27 | 2013-04-27 | Medical guide wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203425362U true CN203425362U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320223562.3U Withdrawn - After Issue CN203425362U (en) | 2013-04-27 | 2013-04-27 | Medical guide wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203425362U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381281A (en) * | 2013-04-27 | 2013-11-06 | 王东 | Medical guide wire |
| CN112245770A (en) * | 2020-11-16 | 2021-01-22 | 勃森生命科技(上海)有限公司 | Guide wire for aortic arch interventional therapy |
-
2013
- 2013-04-27 CN CN201320223562.3U patent/CN203425362U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103381281A (en) * | 2013-04-27 | 2013-11-06 | 王东 | Medical guide wire |
| CN112245770A (en) * | 2020-11-16 | 2021-01-22 | 勃森生命科技(上海)有限公司 | Guide wire for aortic arch interventional therapy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140212 Effective date of abandoning: 20150520 |
|
| RGAV | Abandon patent right to avoid regrant |