CN102716543B - Magnetic catheter with trawl wire capture capability - Google Patents
Magnetic catheter with trawl wire capture capability Download PDFInfo
- Publication number
- CN102716543B CN102716543B CN201210223643.3A CN201210223643A CN102716543B CN 102716543 B CN102716543 B CN 102716543B CN 201210223643 A CN201210223643 A CN 201210223643A CN 102716543 B CN102716543 B CN 102716543B
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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
Ureter rack tube is a kind of to be applied in the upper operation on urethra such as kidney, ureter for keeping the medical apparatus and instruments of upper urinary tract drain.Traditional ureter rack tube need to utilize cystoscope to pull out, and to patient, has brought very large misery.Thus, those skilled in the art have worked out a kind of Ureteral stent device, to realize, alleviate bring to patient painful and uncomfortable in pulling out ureter rack tube process.This defeated Ureteral stent device comprises the ureter rack tube that is provided with trawlnet and the catheter that is provided with magnetic portion, 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 one end and is fixedly connected on the free-ended trawlnet 03 of draught line 02, and in trawlnet 03, being provided with can be by the ferrous material of magnet absorption; Catheter 04 comprises inner core 041 and epitheca 042, inner core 041 is set in epitheca 042 slidably, interior core head is provided with magnetic portion 0411 by rear position, 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 trawlnet lock chamber.
Need to be by above-mentioned ureter rack tube when taking out in patient body, first adopt the operation of conventional indwelling catheter to send into patient's anterior urethra above-mentioned catheter 04, ferrous material in recycling magnetic portion 0411 absorption trawlnet 03, then pull back inner core 041, make trawlnet 03 embed trawlnet lock chamber, integral body pulls out catheter 04 again, can make trawlnet 03 draw smoothly urethral orifice, now can be by pulling trawlnet 03, the support tube body 01 being connected with trawlnet 03 by draught line 02 is taken out in patient body, thereby complete the operation of pulling out ureter rack tube.
By using above-mentioned Ureteral stent device, operator do not use cystoscope when pulling out ureter rack tube, have avoided patient to pull out and operate suffered misery and uncomfortable because of cystoscope.But, after by magnetic portion 0411 location trawlnet 03, need to utilize the cooperation of inner core 041 and epitheca 042 that trawlnet 03 is embedded to 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 patient carries out simultaneously, the urine that intravesical is remaining has played again certain lubrication, cause trawlnet 03 to be easy to slippage from catheter, above-mentioned " making trawlnet 03 embed trawlnet lock chamber " is not easy to realize, and operator need to repeatedly attempt could success.
By the above, how a kind of catheter is provided, to realize the object of pulling out fast 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 invention provides a kind of magnetic catheter with netting twine capture ability, for pulling out fast the ureter rack tube that is provided with trawlnet in implanted patient body.
For achieving the above object, the invention provides following technical scheme:
A magnetic catheter with netting twine capture ability, magnetic catheter is provided with magnetic portion near self head place, and the outer surface of magnetic portion is provided with a plurality of one end and is connected with 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 round and smooth 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 diameter that is provided with barb place on magnetic catheter is less than the diameter of other positions of magnetic catheter.
Preferably, in above-mentioned magnetic catheter, magnetic catheter is provided with 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, also comprise the epitheca that is sheathed on magnetic catheter outside, the external diameter of epitheca is less than the maximum gauge of oval ball head, and 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, at magnetic catheter, near self head place, be provided with magnetic portion, meanwhile, the outer surface of magnetic portion is provided with a plurality of one end and is connected with 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 magnetic catheter to be sent into patient's anterior urethra.In magnetic portion, adsorbing can be by the trawlnet of magnet absorption, be pulled outwardly magnetic catheter, now, the barb that is arranged on magnetic portion outer surface can hook trawlnet, prevent trawlnet slippage from magnetic catheter, thereby improved the success rate of trawlnet being drawn to this operation of urethral orifice, realized the object of pulling out fast the ureter rack tube that is provided with trawlnet in implanted patient body.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is provided with the structural representation of the ureter rack tube of trawlnet in prior art;
Fig. 2 is provided with the structural representation of the catheter of magnetic portion in prior art;
The structural representation of the magnetic catheter that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is that the bill of barb is towards the schematic diagram on magnetic catheter surface;
Fig. 5 is that the bill of barb is towards the schematic diagram of magnetic catheter head;
Fig. 6 is the schematic diagram of staggered barb;
Fig. 7 is the schematic diagram that the diameter that is provided with barb place on magnetic catheter is less than other position diameters;
Fig. 8 is the schematic diagram that is provided with the magnetic catheter of oval ball head;
The structural representation of the magnetic catheter that includes epitheca that Fig. 9 provides for the embodiment of the present invention.
In above Fig. 1-9:
Support tube body 01, draught line 02, trawlnet 03, catheter 04, inner core 041, magnetic portion 0411, epitheca 042;
Magnetic catheter 10, magnetic portion 11, barb 20, the neck of hook 21, bill 22, epitheca 30.
The specific embodiment
The invention provides a kind of magnetic catheter with netting twine capture ability, for pulling out fast the ureter rack tube that is provided with trawlnet in implanted patient body.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 3, the magnetic catheter 10 with netting twine capture ability that the embodiment of the present invention provides 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 is connected with magnetic catheter 10 by the neck of hook 21, and the opening direction between barb 20 and 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.In magnetic portion 11, adsorbing can be by the trawlnet of magnet absorption, be pulled outwardly magnetic catheter 10, now, the barb 20 that is arranged on magnetic portion 11 outer surfaces can hook trawlnet, prevent trawlnet slippage from magnetic catheter 10, thereby improved the success rate of trawlnet being drawn to this operation of urethral orifice, realized the object of pulling out fast the ureter rack tube that is provided with trawlnet in implanted patient body.
Further, in the magnetic catheter providing at above-described embodiment, 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 providing at above-described embodiment, the bill 22 of barb 20 is towards the surface of magnetic catheter 10.Can expect, the netting twine on trawlnet enters behind 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, causes trawlnet slippage from magnetic catheter.By the bill of barb 20 22 is set to towards the surface of magnetic catheter 10, when netting twine will be deviate from from barb 20, meeting be hooked by bill 22, thereby has avoided the phenomenon of trawlnet slippage from magnetic catheter.It may occur to persons skilled in the art that, barb 20 can also be set to bill 22 towards the form of magnetic catheter 10 heads, as shown in Figure 5.
Preferably, in the above-described embodiments, bill 22 is round and smooth 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 round and smooth 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, as shown in Figure 6.By practice, learn, barb 20 is being set to, after staggered pattern, can improve the ability that barb 20 is caught trawlnet, thereby further reduce operator's required number of attempt when using magnetic Removal of uriethral catheter ureter rack tube.
The mucosa that scratches inside of human body in order further to prevent from being arranged on the barb on magnetic catheter surface, as shown in Figure 7, the diameter that is provided with barb 20 places on magnetic catheter 10 is less than the diameter of other position on magnetic catheter 10.Can see, the height of barb 20 is lower than the height of barb surfaces is not set on magnetic catheter 10, like this, when magnetic catheter 10 is pushed to patient's anterior urethra, barb place part is not set on magnetic catheter 10 and can struts anterior urethra, thereby avoided contacting of barb 20 and inside of human body mucosa, also just prevented that barb 20 from scratching inside of human body mucosas.
Preferably, in the magnetic catheter providing at above-described embodiment, the head of magnetic catheter 10 is oval ball, and as shown in Figure 8, meanwhile, the maximum radius of oval ball head is greater than the radius of other cross section of magnetic catheter.Magnetic catheter 10 is being inserted after patient's urethra, the oval ball head that front end expands can strut urethra, thereby avoids mucous membrane of urethra to be scratched by other position of catheter.
In order to prevent that barb 20 is out of shape and then causes trawlnet slippage from magnetic catheter because of stressed when outwards pulling trawlnet, on the basis of above-described embodiment, the magnetic catheter that the embodiment of the present invention provides 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 meanwhile, 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.Can expect, epitheca 30 can be in the outer slip of magnetic catheter 10.
When the magnetic Removal of uriethral catheter ureter rack tube that uses the embodiment of the present invention to provide, first epitheca 30 is stuck in to the ellipsoid head rear of magnetic catheter 10, both are pushed jointly to patient's urethra; At magnetic catheter 10, enter after patient's bladder, fixedly epitheca 30 is motionless, and continues to push forward magnetic catheter 20, makes the magnetic portion 11 that is provided with barb 20 stretch out epitheca 30; When utilizing barb 20 to hook after trawlnet, fixedly epitheca 30 is motionless, and magnetic catheter 10 is pulled outwardly; Finally, magnetic catheter 10 and epitheca 30 are together extracted out in patient body.Can expect, trawlnet has been stuck between magnetic catheter 10 and epitheca 30, even if barb 20 cannot hook trawlnet because of stressed excessive deformation, trawlnet also cannot skid off between magnetic catheter 10 and epitheca 30.Success rate while further improving by epitheca 30 is set the magnetic Removal of uriethral catheter ureter rack tube providing in the use embodiment of the present invention.
In this description, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a magnetic catheter with netting twine capture ability, described magnetic catheter is provided with magnetic portion near self head place, it is characterized in that, the outer surface of described magnetic portion is provided with a plurality of one end and is connected with described magnetic catheter, and the other end is towards the barb of described magnetic catheter afterbody.
2. magnetic catheter according to claim 1, is characterized in that, described magnetic portion is magnetic rubber or soft magnetism plastics.
3. magnetic catheter according to claim 1, is characterized in that, the bill of described barb is towards described magnetic catheter surface.
4. magnetic catheter according to claim 3, is characterized in that, described bill is round and smooth bill.
5. magnetic catheter according to claim 3, is characterized in that, a plurality of described barbs are staggered on the surface of described magnetic catheter.
6. according to the magnetic catheter described in claim 1-5 any one, it is characterized in that, the diameter that is provided with barb place on described magnetic catheter is less than the diameter of other positions of magnetic catheter.
7. magnetic catheter according to claim 6, is characterized in that, described magnetic catheter is provided with oval ball head, and the maximum radius of described oval ball head is greater than the radius of described other cross sections of magnetic catheter.
8. magnetic catheter according to claim 7, it is characterized in that, also comprise the epitheca that is sheathed on described magnetic catheter outside, the external diameter of described epitheca is less than the maximum gauge of described oval ball head, and the internal diameter of described epitheca is greater than the diameter of described 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 CN102716543A (en) | 2012-10-10 |
| CN102716543B true CN102716543B (en) | 2014-09-03 |
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN102716543B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10792490B2 (en) * | 2013-11-12 | 2020-10-06 | Medtronic, Inc. | Open channel implant tools and implant techniques utilizing such tools |
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 |
|---|
| 末端带牵引线的输尿管支架管在肾移植中的应用价值;许晓婷，等;《器官移植》;20120331;第3卷(第2期);第91-94页 * |
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| CN102716543A (en) | 2012-10-10 |
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Granted publication date: 20140903 Termination date: 20200629 |
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| CF01 | Termination of patent right due to non-payment of annual fee |