CN102579171B - Ureteral stent device - Google Patents
Ureteral stent device Download PDFInfo
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- CN102579171B CN102579171B CN201210055494.4A CN201210055494A CN102579171B CN 102579171 B CN102579171 B CN 102579171B CN 201210055494 A CN201210055494 A CN 201210055494A CN 102579171 B CN102579171 B CN 102579171B
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- draught line
- inner core
- ureteral stent
- patient
- section
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
- A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
- A61M27/008—Implant devices for drainage of body fluids from one part of the body to another pre-shaped, for use in the urethral or ureteral tract
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- Health & Medical Sciences (AREA)
- Hematology (AREA)
- Heart & Thoracic Surgery (AREA)
- Otolaryngology (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Ophthalmology & Optometry (AREA)
- Urology & Nephrology (AREA)
- Anesthesiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- External Artificial Organs (AREA)
Abstract
The invention discloses a ureteral stent device which comprises an ureteral stent tube and an urethral catheter, wherein a pull line of the ureteral stent tube comprises a magnetic adsorption section and an elastic section for ensuring the length of the pull line to be less than the length from the tail part of a stent tube body to an urethral orifice of a patient after the ureteral stent tube is implanted into the body of the patient when the elastic section in a freely expanded state; the elastic section is an elastic silk thread; the elastic section is arranged between the stent tube body and the magnetic adsorption section; the magnetic adsorption section is a silk thread with interrupted iron cores; the urethral catheter comprises an outer sheath and an inner core; the inner core is sleeved in the outer sheath in a slideable mode; the inner surface of the head part of the outer sheath and the outer surface of the inner core are surrounded into a pull line fixing cavity; and a magnetic part is arranged at the position of the inner core, close to the head part of the inner core. Compared with the existing pull line, in the using process of the ureteral stent device provided by the invention, the pull line is totally retained in the body of the patient and cannot be stained by outside dirts, so that the patient cannot be infected by pollution to the pull line and the patient also cannot feel uncomfortable due to a thread end exposed out of the body of the patient.
Description
Technical field
The present invention relates to medical instruments field, more particularly, relate to a kind of Ureteral stent device.
Background technology
A kind of medical apparatus and instruments of ureter rack tube, profile is an elongated flexible pipe.When ureter blocks because calculus, cicatricial stricture, tumor etc. cause, can, by by ureter rack tube implantation, in order to support ureter, thus urine be enable to drain into bladder from kidney.Meanwhile, operation on ureter (comprising ureteral ligation, rubble and ureter open surgery) and renal pelvis operation (such as: pyelolithotomy, renal pelvis shaping, percutaneous nephroscope lithotripsy etc.) routine also need to place ureter rack tube.At present also without any a kind of ureter rack tube can permanent indwelling in vivo, in use for some time, need to pull out ureter rack tube by store period, be generally cystoscope operation.Although cystoscope operation is not really major operation, larger misery can be brought to patient, especially obvious for male patient, need in operation process to carry out local anesthesia or general anesthesia to palliate the agonizing sufferings to patient.And can cause the damage of degree varies during tube drawing to urinary tract tissue, make it occur to infect and edema, some cases usually need emergency treatment.
In order to solve the above problems, those skilled in the art investigated a kind of ureter rack tube with draught line.Please refer to Fig. 1, this ureter rack tube comprises support tube body 1 and draught line 2, wherein, the structure of support tube body 1 is identical with existing ureter rack tube, one end and the support tube body 1 of draught line 2 are fixedly linked, the other end is that free end and support tube body are separated, and the free end of draught line 2 is wrapped in the end of support tube body 1, and outside scribbles biodegradable coating 3.
Identical with common ureter rack tube when this ureter rack tube with draught line is in implantation, but the one end being connected with draught line is towards outside patient body.This ureter rack tube is in implantation after a period of time, biodegradable coating decomposes gradually, can trail gradually with the flowing of urine after draught line loses the parcel of biodegradable coating, its free end finally excretes with urine, if now need to take out ureter rack tube, from urethral orifice tractive draught line, and then the ureter rack tube implanted can be taken out.
But when using above-mentioned ureter rack tube, draught line excretes with urine after biodegradable coating decomposes.Take out the condition of ureter rack tube if now also do not reached, no matter from the angle bringing new misery to patient, or from the angle of Financial cost, all should not again implant new ureter rack tube in patient body.And the free end of having discharged the draught line outside patient body is suspended from urethral orifice, first, from the angle of health, the end of a thread exposed becomes easily infected by dirt, if dirt enters in patient body through draught line, easily causes infection; Secondly, the end of a thread that draught line exposes easily causes the discomfort of patient.
By the above, how to provide a kind of Ureteral stent device, under the prerequisite realizing existing ureter rack tube function, the draught line solving existing ureter rack tube becomes easily infected by dirt and causes the problem infecting and easily cause patient's discomfort.
Summary of the invention
In view of this, the invention provides a kind of Ureteral stent device, under the prerequisite realizing existing ureter rack tube function, the draught line solving existing ureter rack tube becomes easily infected by dirt and causes the problem infecting and easily cause patient's discomfort.
For achieving the above object, the invention provides following technical scheme:
A kind of Ureteral stent device, comprising:
Ureter rack tube, ureter rack tube comprises support tube body and draught line, wherein, draught line makes draught line length be less than in implantation after-poppet tube body afterbody to the stretch section of the length of patient's urethral orifice when comprising magnetic absorption section and be in free deployed condition, stretch section is elastomer yarn or helical form elastic thread, stretch section is arranged between support tube body and magnetic absorption section, and magnetic absorption section is interrupted the silk thread of iron core for being provided with; With
Catheter, catheter comprises epitheca and inner core, and inner core is set in epitheca slidably, and the head inner surface of epitheca and the outer surface of inner core surround draught line lock chamber, and inner core is provided with magnetic portion near self head place.
Preferably, in above-mentioned Ureteral stent device, helical form elastic thread is the spiral type elastic thread that polymeric biocompatible material is made.
Preferably, in above-mentioned Ureteral stent device, magnetic absorption section also comprises the ferrous material ring of hoop in silk thread outside.
Preferably, in above-mentioned Ureteral stent device, catheter is flexible silicone catheter.
Preferably, in above-mentioned Ureteral stent device, draught line rule is coiled in the afterbody of support tube body, and draught line is outer to be wrapped up by degradation material.
Preferably, in above-mentioned Ureteral stent device, the head of inner core is provided with target seeker, and target seeker is soft oval ball, and the cross section maximum radius of oval ball is greater than the maximum radius of other position cross section of catheter.
Preferably, in above-mentioned Ureteral stent device, magnetic portion is magnetic rubber block.
The invention provides a kind of Ureteral stent device, comprise ureter rack tube and catheter, wherein, ureter rack tube comprises support tube body and draught line, draught line makes draught line length be less than in implantation after-poppet tube body afterbody to the stretch section of the length of patient's urethral orifice when comprising magnetic absorption section and be in free deployed condition, stretch section is elastomer yarn or helical form elastic thread, stretch section is arranged between support tube body and magnetic absorption section, and magnetic absorption section is interrupted the silk thread of iron core for being provided with; Catheter comprises epitheca and inner core, and inner core is set among epitheca slidably, and the inner surface of epitheca head and the outer surface of inner core surround draught line lock chamber, and inner core is provided with magnetic portion near self head place.
When using Ureteral stent device provided by the present invention, first, by ureter rack tube implantation, its implantation process is identical with existing ureter rack tube; Ureter rack tube is in implantation after certain hour, draught line relies on the flowing of urine to launch in patient body, because stretch section is now in free deployed condition, the length of draught line is less than the length of support tube body afterbody to patient's urethral orifice, and therefore draught line can not expose.When needing ureter rack tube to take out, utilize catheter provided by the invention, adopt conventional indwelling catheter to operate and catheter is sent into anterior urethra, after utilizing magnetic portion to adsorb draught line, make draught line be embedded into draught line lock chamber by pulling back inner core, then entirety pulls out catheter, and draught line can be made to draw urethral orifice smoothly, now namely by pulling draught line, ureter rack tube is taken out in patient body.
Compared with existing draught line, Ureteral stent device provided by the present invention in use draught line rests in patient body completely, extraneous dirt can not be infected with, also patient infection would not be caused because of the pollution of draught line, meanwhile, patient can not feel well because exposing external the end of a thread yet.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation with the ureter rack tube of draught line in prior art;
The structural representation of the Ureteral stent device that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 provides by the embodiment of the present invention structural representation of the draught line being provided with ferrous material ring.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of Ureteral stent device, under the prerequisite realizing existing ureter rack tube function, the draught line solving existing ureter rack tube becomes easily infected by dirt and causes the problem infecting and easily cause patient's discomfort.
A kind of Ureteral stent device, as shown in Figure 2, comprises ureter rack tube and catheter.
Wherein, ureter rack tube comprises support tube body 21 and draught line 22, support tube body 21 is the tubular structure of hollow, and its material adopts medical macromolecular materials, such as: the block copolymer etc. of the block copolymer based on polyethylene, silicones, silicone, styrene/ethylene/butylene.The tube wall of support tube body 21 is provided with several urethral catheterization holes 211.In addition, the two ends of support tube body all bend to circular arc, the two ends of support tube body and bending in the opposite direction respectively, after bending, the bending circular arc in one end of support tube body and the bending circular arc of the other end of support tube body lay respectively at the both sides of support tube body.
Draught line 22 comprises magnetic absorption section and stretch section, magnetic absorption section is interrupted the silk thread of iron core for being provided with, stretch section is elastomer yarn or helical form elastic thread, stretch section is arranged between support tube body 21 and magnetic absorption section, when stretch section is in free deployed condition, the length of draught line 22 be less than support tube body 21 after the implantation its afterbody to the length of patient's urethral orifice.Draught line 22 is wrapped in the afterbody of support tube body 21, and the length after winding on support tube body 21 is at 4-6cm.One end of draught line 22 and the afterbody of support tube body 21 fix, the other end is wound around to the afterbody of support tube body 21 from the middle part of support tube body 21, after this winding direction of draught line 22 and support tube body 21 put into human body, the direction that urine is discharged is consistent, namely draught line 22 can unclamp along with the flowing of urine, and can prevent draught line 22 from tiing a knot in vivo.Draught line 22 can be wound around one deck on support tube body 21, in addition, also according to the thickness situation of draught line 22, support tube body 21 can be wound around multilamellar.Meanwhile, draught line outer wrap has degradation material, to ensure that the draught line that rule is wound around can not be at random in implantation process.
Catheter 23 comprises epitheca 231 and inner core 232, and inner core 232 is set in epitheca 231 slidably.The head inner surface of epitheca 23 1 is coniform inclined-plane, and the outer surface of coniform inclined-plane and inner core 232 defines draught line lock chamber.Inner core is made up of the silica gel of softness; Interior core head rearward position is provided with magnetic portion 2321.Preferably, magnetic portion 2321 is the magnetic rubber block identical with inner core profile.Epitheca is made up of the silica gel of softness equally.
When using Ureteral stent device provided by the present invention, first, by the body of ureter rack tube implant patient, its implantation process is identical with existing ureter rack tube; Ureter rack tube is in implantation after certain hour, draught line relies on the flowing of urine to launch in patient body, because stretch section is now in the state freely launched, the length of draught line is less than the length of support tube body afterbody to patient's urethral orifice, and therefore draught line can not expose.When ureter rack tube takes out by needs, utilize catheter provided by the present invention, adopt conventional indwelling catheter to operate and catheter is sent into anterior urethra, after utilizing magnetic portion to adsorb draught line, pull back inner core, make draught line embed draught line lock chamber, then entirety pulls out catheter, draught line can be made to draw urethral orifice smoothly, now namely by pulling draught line, ureter rack tube is taken out in patient body.
Compared with existing ureter rack tube, the Ureteral stent device that the embodiment of the present invention provides have employed has magnetic absorption portion, and when freely launching, length is less than the draught line of support tube body tip to patient's urethral orifice length, also comprises the catheter with magnetic sections and draught line lock chamber.In use, draught line is in the body of patient all the time, when needs take out ureter rack tube, the position of draught line is determined by the attracting each other of magnetic absorption portion of catheter magnetic portion and ureter rack tube draught line, and utilize the draught line lock chamber on catheter draught line and catheter to be fixed, in patient body, draw draught line, eventually through pulling draught line, ureter rack tube is taken out in patient body.
Preferably, on the basis of above-described embodiment, the embodiment of the present invention adopts helical form elastic thread as the stretch section of draught line, the radius of spin of elastic thread is slightly larger than support tube body radius, elastic thread can rely on the spiral of self be set with and outside support tube body, be conducive to the making of ureter rack tube.Meanwhile, helical form elastic thread when being stretched by untiing spiral to increase length, this process be hit by a bullet the line of force cross-sectional diameter change less, tensile strength is higher.
Preferably, in the above-described embodiments, helical form elastic thread is the helical form elastic thread be made up of polymeric biocompatible material, and polymeric biocompatible material ensure that after in implantation, and draught line can not cause the untoward reaction of patient.
On the basis of above-described embodiment, the magnetic absorption section of Ureteral stent device provided by the present invention also comprises the ferrous material ring that hoop is located at silk thread outside.
Please refer to Fig. 3, in order to ensure that draught line can be taken out smoothly, on the basis of above-described embodiment, the draught line 22 that the present embodiment provides has multiple ferrous material ring 2211 at the outside of magnetic absorption section hoop.When using supporting medical apparatus and instruments to attract the adsorption section of draught line, the ferrous material ring bound round outside magnetic absorption section silk thread increases the magnetic force between draught line and medical apparatus and instruments, to make when taking out draught line draught line can more easily attract by medical apparatus and instruments.
Preferably, the distance on silk thread between adjacent two ferrous material rings is not less than silk thread radius and ferrous material ring radius sum, to ensure that silk thread has good flexible.
For the ease of ureter rack tube installation and alleviate patient and implanting the sensation of the discomfort after ureter rack tube, the Ureteral stent device that the embodiment of the present invention provides utilizes flexible silica gel to make, can bend arbitrarily and change shape, with the shape of ureter of better fitting, anterior urethra.
Meanwhile, the head of catheter inner core is provided with the target seeker of oval ball shape, and the maximum radius of its cross section is greater than the maximum radius at other position of catheter.When catheter operates in patient's urethra, target seeker can play a protective role, and avoids mucous membrane of urethra by other site tissue damage of catheter.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a Ureteral stent device, is characterized in that, comprising:
Ureter rack tube, described ureter rack tube comprises support tube body and draught line, wherein, described draught line rule is coiled in the afterbody of described support tube body, described draught line is outer to be wrapped up by degradation material, after described draught line makes draught line length be less than in implantation when comprising magnetic absorption section and be in free deployed condition, described support tube body afterbody is to the stretch section of the length of patient's urethral orifice, described stretch section is elastomer yarn or helical form elastic thread, described stretch section is arranged between described support tube body and described magnetic absorption section, described magnetic absorption section is interrupted the silk thread of iron core for being provided with, with
Catheter, described catheter comprises epitheca and inner core, described inner core is set in described epitheca slidably, the head of described inner core is provided with target seeker, described target seeker is soft oval ball, the cross section maximum radius of described oval ball is greater than the maximum radius of other position cross section of described catheter, and the head inner surface of described epitheca and the outer surface of described inner core surround draught line lock chamber, and described inner core is provided with magnetic portion near self head place.
2. Ureteral stent device according to claim 1, is characterized in that, described helical form elastic thread is the spiral type elastic thread that polymeric biocompatible material is made.
3. Ureteral stent device according to claim 1, is characterized in that, described magnetic absorption section also comprises the ferrous material ring of hoop in silk thread outside.
4. Ureteral stent device according to claim 1, is characterized in that, described catheter is flexible silicone catheter.
5. Ureteral stent device according to claim 1, is characterized in that, described magnetic portion is magnetic rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210055494.4A CN102579171B (en) | 2012-03-05 | 2012-03-05 | Ureteral stent device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210055494.4A CN102579171B (en) | 2012-03-05 | 2012-03-05 | Ureteral stent device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102579171A CN102579171A (en) | 2012-07-18 |
| CN102579171B true CN102579171B (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210055494.4A Expired - Fee Related CN102579171B (en) | 2012-03-05 | 2012-03-05 | Ureteral stent device |
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| Country | Link |
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| CN (1) | CN102579171B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9387312B2 (en) | 2008-09-15 | 2016-07-12 | Brightwater Medical, Inc. | Convertible nephroureteral catheter |
| US9956100B2 (en) | 2009-09-15 | 2018-05-01 | Brightwater Medical, Inc. | Systems and methods for coupling and decoupling a catheter |
| EP3096716B1 (en) * | 2014-01-20 | 2019-01-09 | Brightwater Medical, Inc. | Convertible nephroureteral catheter |
| EP3062863B1 (en) | 2014-04-04 | 2019-06-12 | Gyrus ACMI, Inc. (d.b.a.Olympus Surgical Technologies America) | Ureteral stent with anti-migration features |
| CA2956401C (en) | 2014-08-12 | 2022-10-25 | Brightwater Medical, Inc. | Systems and methods for coupling and decoupling a catheter |
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| US4790809A (en) * | 1985-08-29 | 1988-12-13 | Medical Engineering Corporation | Ureteral stent |
| CN2257196Y (en) * | 1996-03-13 | 1997-07-02 | 孙志广 | Urethral catheter |
| CN2671602Y (en) * | 2003-12-25 | 2005-01-19 | 罗功唐 | Disposable pigtail type catheter |
| CN201061668Y (en) * | 2007-07-30 | 2008-05-21 | 佛山特种医用导管有限责任公司 | Urethra dilator |
| CN201768250U (en) * | 2010-08-28 | 2011-03-23 | 刘震 | Double-J tube capable of being extracted without endoscope |
| CN202052173U (en) * | 2010-11-10 | 2011-11-30 | 文武魁 | Dedicated withdrawing device for built-in tube in human body |
| CN102363060A (en) * | 2011-11-10 | 2012-02-29 | 成都禹溪医疗科技有限公司 | Ureteral stent |
| CN202537720U (en) * | 2012-03-05 | 2012-11-21 | 中国人民解放军第三军医大学第二附属医院 | Ureteral stent device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988005317A1 (en) * | 1987-01-13 | 1988-07-28 | Kuntz David H | Urethral stent |
| US6719804B2 (en) * | 2001-04-02 | 2004-04-13 | Scimed Life Systems, Inc. | Medical stent and related methods |
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2012
- 2012-03-05 CN CN201210055494.4A patent/CN102579171B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4790809A (en) * | 1985-08-29 | 1988-12-13 | Medical Engineering Corporation | Ureteral stent |
| CN2257196Y (en) * | 1996-03-13 | 1997-07-02 | 孙志广 | Urethral catheter |
| CN2671602Y (en) * | 2003-12-25 | 2005-01-19 | 罗功唐 | Disposable pigtail type catheter |
| CN201061668Y (en) * | 2007-07-30 | 2008-05-21 | 佛山特种医用导管有限责任公司 | Urethra dilator |
| CN201768250U (en) * | 2010-08-28 | 2011-03-23 | 刘震 | Double-J tube capable of being extracted without endoscope |
| CN202052173U (en) * | 2010-11-10 | 2011-11-30 | 文武魁 | Dedicated withdrawing device for built-in tube in human body |
| CN102363060A (en) * | 2011-11-10 | 2012-02-29 | 成都禹溪医疗科技有限公司 | Ureteral stent |
| CN202537720U (en) * | 2012-03-05 | 2012-11-21 | 中国人民解放军第三军医大学第二附属医院 | Ureteral stent device |
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| Publication number | Publication date |
|---|---|
| CN102579171A (en) | 2012-07-18 |
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Granted publication date: 20150318 Termination date: 20200305 |