CN102716543A - Magnetic catheter with trawl wire capture capability - Google Patents
Magnetic catheter with trawl wire capture capability Download PDFInfo
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- CN102716543A CN102716543A CN2012102236433A CN201210223643A CN102716543A CN 102716543 A CN102716543 A CN 102716543A CN 2012102236433 A CN2012102236433 A CN 2012102236433A CN 201210223643 A CN201210223643 A CN 201210223643A CN 102716543 A CN102716543 A CN 102716543A
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- magnetic
- catheter
- magnetic catheter
- barb
- trawlnet
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Abstract
The invention discloses a magnetic catheter with trawl wire capture capability. A magnetic part is arranged on the magnetic catheter close to the head of the magnetic catheter, and a plurality of barbs are arranged on the outer surface of the magnetic part, and one end of each barb is connected with the magnetic catheter, while the other end of each barb is arranged toward the tail part of the magnetic catheter. When the magnetic catheter provided by the invention is used, the magnetic catheter is fed into the anterior urethra of a patient by adopting conventional catheter retaining operation; and after a trawl which can be adsorbed by a magnet is adsorbed by the magnetic part, the magnetic catheter is pulled outward, and the trawl is hooked by the barbs arranged on the outer surface of the magnetic part to prevent the trawl from slipping away from the magnetic catheter, so that the success rate of extracting the trawl out of the urethral orifice is increased, and the aim of quickly pulling out a catheter stent tube which is implanted in a patient body and provided with a trawl can be achieved.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly, relate to a kind of magnetic catheter with netting twine capture ability.
Background technology
A kind of kidney, ureters etc. of being applied to of ureter rack tube are gone up the medical apparatus and instruments that is used to keep the urinary tract drain in the operation on urethra.Traditional ureter rack tube need utilize cystoscope to pull out, and has brought very big misery to the patient.Thus, those skilled in the art have worked out a kind of ureteric branches rack device, with realize alleviating in pulling out the ureter rack tube process to the patient bring painful and uncomfortable.Should comprise ureter rack tube that is provided with trawlnet and the catheter that is provided with magnetic portion by defeated ureteric branches rack device; Please refer to Fig. 1 and Fig. 2; Ureter rack tube comprises support tube body 01, is connected in the draught line 02 of support tube body 01 1 ends and is fixedly connected on draught line 02 free-ended trawlnet 03 that being provided with in the trawlnet 03 can be by the ferrous material of magnet absorption; Catheter 04 comprises inner core 041 and epitheca 042; Inner core 041 is set in the epitheca 042 slidably; Interior core head leans on the position, back to be provided with magnetic portion 0411, and the head inner surface of epitheca 042 is coniform inclined-plane, and the outer surface of coniform inclined-plane and inner core 041 has surrounded the trawlnet lock chamber.
When needs take out above-mentioned ureter rack tube in patient's body; At first adopt the operation of conventional indwelling catheter to send into patient's anterior urethra above-mentioned catheter 04, utilize the ferrous material in the magnetic portion 0411 absorption trawlnet 03 again, the pulled backwards inner core 041 then; Make trawlnet 03 embed the trawlnet lock chamber; Whole more outwards pulling catheter 04 can make trawlnet 03 draw urethral orifice smoothly, and this moment can be through pulling trawlnet 03; To in the patient body, take out through the support tube body 01 that draught line 02 links to each other with trawlnet 03, thereby accomplish the operation of pulling out ureter rack tube.
Through using above-mentioned ureteric branches rack device, operator do not use cystoscope when pulling out ureter rack tube, have avoided the patient to pull out the suffered misery of operation and uncomfortable because of cystoscope.But, after through magnetic portion 0411 location trawlnet 03, need utilize the cooperation of inner core 041 and epitheca 042 that trawlnet 03 is embedded the trawlnet lock chamber, and then bull trawl 03 pulls; Because the outer surface of trawlnet 03, inner core 041 and epitheca 042 is all very smooth; The above-mentioned intravesical that operates in the patient carries out simultaneously; The urine that intravesical is remaining has played certain lubrication again; Cause trawlnet 03 to be easy to slippage from the catheter, above-mentioned " making trawlnet 03 embed the trawlnet lock chamber " is not easy to realize that operator need repeatedly attempt could success.
By the above, how a kind of catheter is provided, to realize pulling out fast the purpose of the above-mentioned ureter rack tube that is provided with trawlnet, become the technical problem that those skilled in the art need solution badly.
Summary of the invention
In view of this, the present invention provides a kind of magnetic catheter with netting twine capture ability, is used for pulling out fast being implanted the intravital ureter rack tube that is provided with trawlnet of patient.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of magnetic catheter with netting twine capture ability, the magnetic catheter is provided with magnetic portion near self head place, and the outer surface of magnetic portion is provided with a plurality of ends and links to each other with the magnetic catheter, and the other end is towards the barb of magnetic catheter afterbody.
Preferably, in above-mentioned magnetic catheter, magnetic portion is magnetic material or soft magnetic materials.
Preferably, in above-mentioned magnetic catheter, magnetic portion is magnetic rubber or soft magnetism plastics.
Preferably, in above-mentioned magnetic catheter, the bill of barb is towards magnetic catheter surface.
Preferably, in above-mentioned magnetic catheter, bill is slick and sly bill.
Preferably, in above-mentioned magnetic catheter, a plurality of barbs are staggered on the surface of magnetic catheter.
Preferably, in above-mentioned magnetic catheter, the magnetic catheter is provided with the diameter of the diameter at barb place less than other positions of magnetic catheter.
Preferably, in above-mentioned magnetic catheter, the magnetic catheter is provided with the oval ball head, and the maximum radius of oval ball head is greater than the radius of other cross sections of magnetic catheter.
Preferably, in above-mentioned magnetic catheter, comprise also being sheathed on the outside epitheca of magnetic catheter that the external diameter of epitheca is less than the maximum gauge of oval ball head, the internal diameter of epitheca is greater than the diameter of magnetic catheter.
The invention provides a kind of magnetic catheter with netting twine capture ability; Be provided with magnetic portion at the magnetic catheter near self head place; Simultaneously, the outer surface of magnetic portion is provided with a plurality of ends and links to each other with the magnetic catheter, and the other end is towards the barb of magnetic catheter afterbody.
When using magnetic catheter provided by the present invention, adopt conventional indwelling catheter operation the magnetic catheter to be sent into patient's anterior urethra.Adsorbing in magnetic portion can be by the trawlnet of magnet absorption; Be pulled outwardly the magnetic catheter; At this moment, the barb that is arranged on magnetic portion outer surface can hook trawlnet, prevents trawlnet slippage from the magnetic catheter; Thereby improved the success rate of trawlnet being drawn this operation of urethral orifice, realized pulling out fast and implanted the intravital purpose that is provided with the ureter rack tube of trawlnet of patient.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is for being provided with the structural representation of the ureter rack tube of trawlnet in the prior art;
Fig. 2 is for being provided with the structural representation of the catheter of magnetic portion in the prior art;
Fig. 3 is the structural representation of the magnetic catheter that the embodiment of the invention provided;
Fig. 4 is the sketch map of the bill of barb towards magnetic catheter surface;
Fig. 5 is the sketch map of the bill of barb towards magnetic catheter head;
Fig. 6 is the sketch map of staggered barb;
Fig. 7 is provided with the sketch map of the diameter at barb place less than other position diameters for the magnetic catheter;
Fig. 8 is the sketch map that is provided with the magnetic catheter of oval ball head;
Fig. 9 is the structural representation of the magnetic catheter that includes epitheca that the embodiment of the invention provided.
Among above Fig. 1-9:
The specific embodiment
The present invention provides a kind of magnetic catheter with netting twine capture ability, is used for pulling out fast being implanted the intravital ureter rack tube that is provided with trawlnet of patient.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
As shown in Figure 3; The magnetic catheter 10 with netting twine capture ability that the embodiment of the invention provided is being provided with magnetic portion 11 near self head place; Outer surface in magnetic portion 11 is provided with a plurality of barbs 20; Barb 20 links to each other with magnetic catheter 10 through the neck of hook 21, and the opening direction between barb 20 and the catheter 10 is towards the afterbody of magnetic catheter 10.
When using magnetic catheter 10 provided by the present invention, adopt conventional indwelling catheter operation magnetic catheter 10 to be sent into patient's anterior urethra.Adsorbing in magnetic portion 11 can be by the trawlnet of magnet absorption; Be pulled outwardly magnetic catheter 10; At this moment, the barb 20 that is arranged on magnetic portion 11 outer surfaces can hook trawlnet, prevents trawlnet slippage from the magnetic catheter 10; Thereby improved the success rate of trawlnet being drawn this operation of urethral orifice, realized pulling out fast and implanted the intravital purpose that is provided with the ureter rack tube of trawlnet of patient.
Further, in the magnetic catheter that the foregoing description provided, magnetic portion 11 is magnetic material or soft magnetic materials, and preferably, magnetic portion 11 is magnetic rubber or soft magnetism plastics.
Concrete, as shown in Figure 4, in the magnetic catheter that the foregoing description provided, the bill 22 of barb 20 is towards the surface of magnetic catheter 10.Can expect that after the netting twine on the trawlnet got into the space between barb 20 and magnetic catheter 10 surfaces, if magnetic catheter 10 still travels forward, netting twine can be deviate from from barb 20, cause trawlnet slippage from the magnetic catheter.Be set to towards the surface of magnetic catheter 10 through bill 22 barb 20, when netting twine will be deviate from from barb 20, can be hooked by bill 22, thus avoided the phenomenon of trawlnet slippage from the magnetic catheter.What it may occur to persons skilled in the art that is, can also barb 20 be set to the form of bill 22 towards magnetic catheter 10 heads, as shown in Figure 5.
Preferably, in the above-described embodiments, bill 22 is slick and sly bill.Because the mucosa of inside of human body is comparatively fragile, sharp bill can scratch mucomembranous surface when slipping over.Bill 22 is set to slick and sly bill, can avoids this problem.
Further, in the above-described embodiments, a plurality of barbs 20 are staggered on the surface of magnetic catheter 10, and are as shown in Figure 6.Learn through practice, after barb 20 is set to staggered pattern, can improve the ability that barb 20 is caught trawlnet, thereby further reduce operator's required number of attempt when using the magnetic catheter to pull out ureter rack tube.
In order further to prevent to be arranged on the mucosa that the surperficial barb of magnetic catheter scratches inside of human body, as shown in Figure 7, magnetic catheter 10 is provided with the diameter of the diameter at barb 20 places less than other position on the magnetic catheter 10.Can see; The height of barb 20 is lower than the height that barb surfaces is not set on the magnetic catheter 10; Like this, when magnetic catheter 10 is pushed patient's anterior urethra, barb place part is not set on the magnetic catheter 10 can struts anterior urethra; Thereby avoided contacting of barb 20 and inside of human body mucosa, just prevented that also barb 20 from scratching the inside of human body mucosas.
Preferably, in the magnetic catheter that the foregoing description provided, the head of magnetic catheter 10 is oval ball, and is as shown in Figure 8, and simultaneously, the maximum radius of oval ball head is greater than the radius of other cross section of magnetic catheter.After magnetic catheter 10 was inserted patient's urethra, the oval ball head that front end expands can strut urethra, thereby avoided mucous membrane of urethra to be scratched by other position of catheter.
In order to prevent that when outwards pulling trawlnet barb 20 is out of shape and then causes trawlnet slippage from the magnetic catheter because of stressed, on the basis of the foregoing description, the magnetic catheter that the embodiment of the invention provided also comprises epitheca 30.As shown in Figure 9, epitheca 30 is set in the outside of magnetic catheter 10 for hollow tubular structures, and simultaneously, the external diameter of epitheca 30 is less than the maximum gauge of above-mentioned ellipsoid head, and the internal diameter of epitheca 30 is greater than the diameter of magnetic catheter.What can expect is that epitheca 30 can slide outside magnetic catheter 10.
When the use magnetic catheter that the embodiment of the invention provided is pulled out ureter rack tube, at first epitheca 30 is stuck in the ellipsoid head rear of magnetic catheter 10, both are pushed jointly patient's urethra; After magnetic catheter 10 got into patient's bladder, fixedly epitheca 30 was motionless, and continued to push magnetic catheter 20 forward, made the magnetic portion 11 that is provided with barb 20 stretch out epitheca 30; After utilizing barb 20 to hook trawlnet, fixedly epitheca 30 is motionless, and magnetic catheter 10 is pulled outwardly; At last, magnetic catheter 10 and epitheca 30 are together extracted out in patient's body.What can expect is, trawlnet has been stuck between magnetic catheter 10 and the epitheca 30, even if barb 20 can't hook trawlnet because of stressed excessive deformation, trawlnet also can't skid off between magnetic catheter 10 and epitheca 30.Through being set, epitheca 30 further improves the success rate when the use magnetic catheter that the embodiment of the invention provided is pulled out ureter rack tube.
Each embodiment adopts the mode of going forward one by one to describe in this description, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (9)
1. magnetic catheter with netting twine capture ability; Said magnetic catheter is provided with magnetic portion near self head place; It is characterized in that the outer surface of said magnetic portion is provided with a plurality of ends and links to each other with said magnetic catheter, the other end is towards the barb of said magnetic catheter afterbody.
2. magnetic catheter according to claim 1 is characterized in that, said magnetic portion is magnetic material or soft magnetic materials.
3. magnetic catheter according to claim 2 is characterized in that, said magnetic portion is magnetic rubber or soft magnetism plastics.
4. magnetic catheter according to claim 2 is characterized in that, the bill of said barb is towards said magnetic catheter surface.
5. magnetic catheter according to claim 3 is characterized in that, said bill is slick and sly bill.
6. magnetic catheter according to claim 4 is characterized in that, a plurality of said barbs are staggered on the surface of said magnetic catheter.
7. according to the described magnetic catheter of claim 1-6, it is characterized in that said magnetic catheter is provided with the diameter of the diameter at barb place less than other positions of magnetic catheter.
8. magnetic catheter according to claim 7 is characterized in that, said magnetic catheter is provided with the oval ball head, and the maximum radius of said oval ball head is greater than the radius of said other cross sections of magnetic catheter.
9. magnetic catheter according to claim 8; It is characterized in that; Also comprise being sheathed on the outside epitheca of said magnetic catheter, the external diameter of said epitheca is less than the maximum gauge of said oval ball head, and the internal diameter of said epitheca is greater than the diameter of said magnetic catheter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223643.3A CN102716543B (en) | 2012-06-29 | 2012-06-29 | Magnetic catheter with trawl wire capture capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210223643.3A CN102716543B (en) | 2012-06-29 | 2012-06-29 | Magnetic catheter with trawl wire capture capability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102716543A true CN102716543A (en) | 2012-10-10 |
| CN102716543B CN102716543B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210223643.3A Expired - Fee Related CN102716543B (en) | 2012-06-29 | 2012-06-29 | Magnetic catheter with trawl wire capture capability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110974364A (en) * | 2013-11-12 | 2020-04-10 | 美敦力公司 | Open channel implantation tool |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790809A (en) * | 1985-08-29 | 1988-12-13 | Medical Engineering Corporation | Ureteral stent |
| US6551304B1 (en) * | 1999-12-01 | 2003-04-22 | Abbeymoor Medical, Inc. | Magnetic retrieval device and method of use |
| CN202682516U (en) * | 2012-06-29 | 2013-01-23 | 中国人民解放军第三军医大学第二附属医院 | Magnetic catheter with net wire capturing capability |
-
2012
- 2012-06-29 CN CN201210223643.3A patent/CN102716543B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790809A (en) * | 1985-08-29 | 1988-12-13 | Medical Engineering Corporation | Ureteral stent |
| US6551304B1 (en) * | 1999-12-01 | 2003-04-22 | Abbeymoor Medical, Inc. | Magnetic retrieval device and method of use |
| CN202682516U (en) * | 2012-06-29 | 2013-01-23 | 中国人民解放军第三军医大学第二附属医院 | Magnetic catheter with net wire capturing capability |
Non-Patent Citations (1)
| Title |
|---|
| 许晓婷，等: "末端带牵引线的输尿管支架管在肾移植中的应用价值", 《器官移植》, vol. 3, no. 2, 31 March 2012 (2012-03-31), pages 91 - 94 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110974364A (en) * | 2013-11-12 | 2020-04-10 | 美敦力公司 | Open channel implantation tool |
| CN110974364B (en) * | 2013-11-12 | 2023-10-27 | 美敦力公司 | Open Channel Implantation Tool |
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| CN102716543B (en) | 2014-09-03 |
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Granted publication date: 20140903 Termination date: 20200629 |