CN212592591U - Ureteral stent - Google Patents
Ureteral stent Download PDFInfo
- Publication number
- CN212592591U CN212592591U CN202020703028.2U CN202020703028U CN212592591U CN 212592591 U CN212592591 U CN 212592591U CN 202020703028 U CN202020703028 U CN 202020703028U CN 212592591 U CN212592591 U CN 212592591U
- Authority
- CN
- China
- Prior art keywords
- pipe body
- ureter
- ureteral stent
- guide sleeve
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000000626 ureter Anatomy 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 9
- 229920002635 polyurethane Polymers 0.000 claims abstract description 9
- 239000004814 polyurethane Substances 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000002513 implantation Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 231100000241 scar Toxicity 0.000 abstract description 5
- 230000033001 locomotion Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 239000004575 stone Substances 0.000 description 9
- 210000000244 kidney pelvis Anatomy 0.000 description 7
- 230000002757 inflammatory effect Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000002980 postoperative effect Effects 0.000 description 5
- 210000002700 urine Anatomy 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- 206010063659 Aversion Diseases 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036262 stenosis Effects 0.000 description 2
- 208000037804 stenosis Diseases 0.000 description 2
- 210000003708 urethra Anatomy 0.000 description 2
- 210000001635 urinary tract Anatomy 0.000 description 2
- 230000029663 wound healing Effects 0.000 description 2
- 206010007027 Calculus urinary Diseases 0.000 description 1
- 206010020524 Hydronephrosis Diseases 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 208000004608 Ureteral Obstruction Diseases 0.000 description 1
- 208000009911 Urinary Calculi Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 208000006750 hematuria Diseases 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000002485 urinary effect Effects 0.000 description 1
- 201000002327 urinary tract obstruction Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Urology & Nephrology (AREA)
- Ophthalmology & Optometry (AREA)
- Otolaryngology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
- Prostheses (AREA)
Abstract
The utility model provides a ureteral stent, its characterized in that: the guide sleeve covers the middle pipe body and the lower pipe body and can be movably arranged relative to the pipe body, the inner diameter of the guide sleeve is matched with the outer diameter of the lower pipe body, and the middle pipe body can be placed into the guide sleeve under pressure; the utility model discloses ureteral stent need say guide pin bushing and seal wire installation in advance when using and target in place, takes out from seal wire and guide pin bushing convenient operation after putting into, the utility model discloses stable after putting into, avoided the support at internal round trip movement to lead to the damage, and relative expansibility can avoid the narrow phenomenon of scar department ureter by force, and based on the flexible material of polyurethane cooperates the well body of U type to be deformable, can also alleviate the damage to ureter.
Description
Technical Field
The invention relates to the field of medicines, in particular to a ureteral stent.
Background
The ureteral stent is firstly applied to clinic in the last 70 years of the last century due to the internal supporting and internal drainage functions, and is widely applied to various operations of the urinary system at present. The ureter bracket can effectively relieve temporary upper urinary tract obstruction caused by upper urinary tract calculus and ureter edema, prevent postoperative ureter stenosis and urine leakage, and is beneficial to the recovery of the function of the affected side kidney. In urinary calculus minimally invasive surgery, calculus is broken through laser and other stone breaking tools, large calculus fragments can be flushed out through water flow and taken out through a stone sleeving basket, powdered calculus (2 mm) is often discharged after surgery, a ureteral stent is placed, calculus powder can be orderly discharged along the wall of the stent, and the internal drainage function of the ureteral stent keeps the urinary tract unobstructed.
At present, double J tubes applied at home and abroad are usually made of polyurethane, have a shape memory function, are bent into elastic rings at two tail ends in a natural state and are respectively used for being placed in a renal pelvis and a bladder to play a role in fixing, the middle of the double J tubes is in a straight tube shape, and the tube walls of the double J tubes are provided with small holes which are parts placed in a ureter to play a role in internal support drainage, namely, the double J tubes are used for expanding the ureter so that stones and urine are discharged into the bladder along the inside and the outside of the tube through the peris. When the double-J tube is placed in, a guide wire is placed in the operation cavity of the cystoscope, the double-J tube is pulled straight and sleeved outside the guide wire, the double-J tube is sent into a corresponding position along the guide wire, the guide wire is drawn out, the double-J tube restores to the original shape, the elastic rings at the two ends are respectively hung on the renal pelvis and the bladder, and if the double-J tube needs to be taken out, the double-J tube only needs to be. The double J tube is convenient to insert and has definite effect, so the double J tube is very widely applied clinically. However, the following disadvantages of the double J-tube are found in clinical use: firstly, because the diameter of the double J-shaped tube is limited, the supporting and expanding effects on the inner cavity of the ureter are not enough, so that the situation that calculus or calculus fragments are not smoothly discharged sometimes occurs; due to the reason that the supporting and expanding functions of the double J tubes are insufficient, even though the double J tubes are reserved after the ureterotomy is performed, the ureter is sometimes narrowed at a scar after the double J tubes are taken out after a wound is healed; still because the double J pipe diameter is limited, the straight tube part has little support force to the ureter, and the relative fixing of its position mainly relies on the elastic ring at its both ends, and the material of double J pipe is polyurethane, and whole pipe is soft, and the holding power of elastic ring is limited, under the continuous wriggling of ureter wall, sometimes can appear double J pipe aversion, and human breathing, motion still can increase its range of aversion. This condition is more likely to occur when there is severe hydronephrosis, and the renal pelvis and its upper end have large movement spaces. When the displacement amplitude is large, the lower end of the double J tube can retract into the ureter to cause difficult tube drawing or completely drop into the bladder to lose the drainage function; when the amplitude is not large, although the serious consequences are avoided, the repeated friction of the elastic rings at the two ends during the displacement can stimulate the renal pelvis and the bladder mucosa to cause obvious macroscopic hematuria, which is not rare clinically.
Disclosure of Invention
It is an object of the present invention to provide a ureteral stent capable of contributing to the treatment of ureteral obstruction.
The utility model discloses the content as follows: a ureteral stent, characterized in that: the pipe body comprises a pipe body divided into three sections and fixedly welded, wherein the pipe body comprises an upper pipe body, a middle pipe body and a lower pipe body in sequence, a plurality of small holes are formed in the pipe body, the upper pipe body and the lower pipe body are arranged in a vortex shape after being arranged, the middle pipe body is in a U shape, the joint of the upper pipe body and the middle pipe body and the joint of the lower pipe body and the middle pipe body are provided with transitional tapers, the guide sleeve and the guide wire are arranged, the guide wire penetrates into the hollow pipe body from the end part of the lower pipe body, the guide sleeve covers the middle pipe body and the lower pipe body and can be movably arranged relative to the pipe body, the inner diameter of the guide sleeve is matched with the.
Through the setting, the ureteral stent of this scheme comprises three-section no trace welded body, and the cooperation sets up by guide pin bushing and seal wire, presses into the well body of U type through the guide pin bushing circularly to be convenient for put into the ureter, and the ureteral stent of this scheme is internal through the swirl column structure relative fixation of upper and lower body, avoids the displacement, realizes the drainage to the size rubble and realizes the support to the ureteral inner wall of the ureteral catheter of postoperative through the expansion of the house steward body of U type through the well body of U type.
Furthermore, the small holes are uniformly distributed on the whole pipe body.
Through the arrangement, the small holes can be used as a standby scheme for drainage, and the ureteral stent can be better used when the large drainage groove and the small drainage groove are blocked or the drainage is not smooth.
Furthermore, the middle tube body is matched with the inner wall of the ureter after the middle tube body is placed.
Through the arrangement, the middle tube body is used for supporting the inner wall of the ureter so as to avoid a narrow site of a postoperative wound healing scar.
Further, the end of the upper pipe body is in a circular closed arrangement.
Further, the material of the pipe body is polyurethane shape memory resin material.
Further, the outer wall of the pipe body is provided with a super-smooth coating.
The utility model has the advantages that:
1. according to the scheme, the middle tube body positioned in the ureter is U-shaped, after the middle tube body is placed in the ureter, the middle tube body is drawn away from the guide wire and the guide sleeve, the upper tube body and the lower tube body are respectively placed in the renal pelvis and the bladder to stably prevent the ureter stent from falling off from the ureter based on shape memory flexible polyurethane, the middle tube body is restored and simultaneously supports the inner wall of the ureter to play a role in expansion, and the large drainage groove is formed, so that the condition that the existing product is not expanded enough to discharge stones or stone fragments is avoided; secondly, after the double J tubes are taken out for the healing of the expanded wound, the ureteral stenosis phenomenon at the healing scar position is avoided, and the flexible material based on polyurethane can deform in cooperation with the U-shaped middle tube body, so that the damage to the ureter is reduced.
2. After the operation, the back is smashed to the calculus in the ureter, will the utility model discloses a ureter support places in the ureter, and the cavity and the both ends open-ended structure of ureter support can be used for transmitting the urine this moment, and calculus and inflammatory liquid after smashing just lie in between ureter support's the outside and the ureter inboard, because ureter itself can produce the wriggling, ureter inner wall can guide calculus and inflammatory liquid to remove along big or small drainage groove this moment, until will follow the urethra and discharge, and the filtration transmission urine can further be realized in the setting of aperture.
Description of the drawings:
fig. 1 is a schematic structural view of the ureteral stent in this embodiment.
FIG. 2 is a schematic structural view of a cross section of the ureteral stent in the present embodiment;
fig. 3 is a schematic sectional view of the ureteral stent in this embodiment, which is placed in the guide sheath;
fig. 4 is a schematic structural view of the ureteral stent in this embodiment after the guide sleeve and the guide wire are inserted.
Reference numerals: 1-a pipe body; 11-feeding the tube body; 12-a middle tube body; 13-lower tube body; 2-large drainage grooves; 3-small drainage groove; 4-guide sleeve; 5-guide wire.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, the specific contents of the embodiment are as follows: a ureteral stent, characterized in that: the improved pipe comprises a pipe body 1 divided into three sections and fixedly welded, wherein the pipe body 1 is sequentially an upper pipe body 11, a middle pipe body 12 and a lower pipe body 13, a plurality of small holes are formed in the pipe body 1, the upper pipe body 11 and the lower pipe body 13 are arranged in a vortex shape after being arranged, the middle pipe body 12 is U-shaped, the connection part of the upper pipe body 11, the lower pipe body 13 and the middle pipe body 12 is provided with transitional taper, the improved pipe further comprises a guide sleeve 4 and a guide wire 5, the guide wire 5 penetrates into the hollow pipe body 1 from the end part of the lower pipe body 13, the guide sleeve 5 covers the middle pipe body 12 and part of the lower pipe body 13 and can be movably arranged relative to the pipe body 1, the inner diameter of the guide sleeve 5 is matched with the outer diameter of the lower pipe body.
Through the setting, the ureteral stent of this scheme comprises three-section no trace welded body 1, and the cooperation sets up by guide pin bushing 4 and seal wire 5, press into the circular ureteral of being convenient for to put into through guide pin bushing 4 with the well body 12 of U type, the ureteral stent of this scheme, swirl column structure through upper and lower body 11, 13 sets up in vivo, be difficult to produce the displacement relatively current product, realize the drainage to big or small rubble and realize the support to the ureteral inner wall of the ureteral of postoperative through the expansion of body 12 in the U type through the well body 12 of U type.
Furthermore, the small holes are uniformly distributed on the whole pipe body 1.
Through the arrangement, the small holes can be used as a standby scheme for drainage, and the ureteral stent can be better used when the large drainage groove 2 and the small drainage groove 3 are blocked or the drainage is not smooth.
Further, the middle tube body 12 is matched with the inner wall of the ureter after the implantation is finished.
Through the above arrangement, the middle tube body 12 is used for supporting the inner wall of the ureter so as to avoid a narrow site of a postoperative wound healing scar.
Further, the end of the upper tube 11 is in a circular closed configuration.
Further, the material of the pipe body 1 is a polyurethane shape memory resin material.
Further, the outer wall of the pipe body 1 is provided with a super-smooth coating.
When the product of the embodiment is put in, the guide wire 5 and the guide sleeve 4 need to be installed in a matching manner, the guide wire 5 is firstly pulled away after the putting in is finished, when the guide wire 5 is pulled away to the middle tube body 12, the upper tube body 11 loses support due to the pulling away of the guide wire, the shape of the upper tube body is changed into a vortex shape due to the shape memory resin polyurethane, the outlet of the renal pelvis is clamped, and an operator slightly pulls away from the guide sleeve 4 to complete the putting in of the ureteral stent.
After the operation, the back is smashed to the calculus in the ureter, will the utility model discloses a ureter support places in the ureter, because the setting of super smooth coating, the ureter support slides easily in the ureter, has avoided the wriggling of ureter inner wall and ureter support outer wall damage, can also let the rubble discharge more easily. The upper tube body 11 and the lower tube body 12 can be fixedly connected to a U-shaped middle tube body 12 which is expanded by matching with a renal pelvis and a bladder, the ureter is prevented from being frequently damaged by sliding of the ureter support in a ureter, at the moment, the structures of the large drainage groove 2 and the small drainage groove 3 of the ureter support can be used for conveying urine, broken stones and inflammatory liquid are located between the outer side of the ureter support and the inner side of the ureter, the inner wall of the ureter can guide the stones and the inflammatory liquid to move along the ureter support until the stones and the inflammatory liquid are conveyed into the bladder to be discharged due to the fact that the inner wall of the ureter per se can creep, and if the stones and the inflammatory liquid are conveyed out from. The tube body 1 is made of an absorbable material, which is similar to an absorbable surgical suture and can be directly decomposed after a period of time (about 30 days) and directly discharged from the urethra.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.
Claims (6)
1. A ureteral stent, characterized in that: comprises a pipe body (1) which is divided into three sections and fixedly welded, an upper pipe body (11), a middle pipe body (12) and a lower pipe body (13) in sequence, the pipe body (1) is provided with a plurality of small holes, the upper pipe body (11) and the lower pipe body (13) are in a vortex shape after being placed in, the middle pipe body (12) is U-shaped, the connecting parts of the upper pipe body (11) and the lower pipe body (13) and the middle pipe body (12) are provided with transitional tapers, the middle pipe body further comprises a guide sleeve (4) and a guide wire (5), the guide wire (5) is arranged by penetrating into the hollow pipe body (1) from the end part of the lower pipe body (13), the guide sleeve (4) coats the middle pipe body (12) and the lower pipe body (13) and can be movably arranged relative to the pipe body (1), the inner diameter of the guide sleeve (4) is matched with the outer diameter of the lower pipe body (13), and the middle pipe body (12) can be placed into the guide sleeve (4) under pressure.
2. A ureteral stent according to claim 1, wherein: the small holes are uniformly distributed on the whole pipe body (1).
3. A ureteral stent according to claim 1, wherein: the middle tube body (12) is matched with the inner wall of the ureter after the implantation is finished.
4. A ureteral stent according to claim 1, wherein: the end part of the upper pipe body (11) is in a circular closed arrangement.
5. A ureteral stent according to claim 1, wherein: the pipe body (1) is made of polyurethane shape memory resin material.
6. A ureteral stent according to claim 1, wherein: the outer wall of the pipe body (1) is provided with a super-smooth coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020703028.2U CN212592591U (en) | 2020-04-30 | 2020-04-30 | Ureteral stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020703028.2U CN212592591U (en) | 2020-04-30 | 2020-04-30 | Ureteral stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212592591U true CN212592591U (en) | 2021-02-26 |
Family
ID=74710152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020703028.2U Expired - Fee Related CN212592591U (en) | 2020-04-30 | 2020-04-30 | Ureteral stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212592591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113967305A (en) * | 2021-12-22 | 2022-01-25 | 德宝恒生科技服务有限公司 | Urination tube |
-
2020
- 2020-04-30 CN CN202020703028.2U patent/CN212592591U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113967305A (en) * | 2021-12-22 | 2022-01-25 | 德宝恒生科技服务有限公司 | Urination tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210226 |