CN216418047U - Ureteral stent capable of controlling discharge time and free of surgical extraction - Google Patents

Ureteral stent capable of controlling discharge time and free of surgical extraction Download PDF

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CN216418047U
CN216418047U CN202120803436.XU CN202120803436U CN216418047U CN 216418047 U CN216418047 U CN 216418047U CN 202120803436 U CN202120803436 U CN 202120803436U CN 216418047 U CN216418047 U CN 216418047U
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ureteral stent
degradable
silk thread
drainage
stent
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金卫
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Zhejiang Jiaxing Xinchuangrei Technology Co ltd
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Abstract

The utility model discloses a ureteral stent capable of controlling the drainage time and being taken out without operation, which comprises a ureteral stent, a silk thread and a drainage body, wherein two ends of the silk thread are respectively connected with the ureteral stent and the drainage body, the ureteral stent further comprises a degradable line, the drainage body is bound on the ureteral stent or the silk thread by the degradable line and is arranged close to the connection part of the ureteral stent and the silk thread, the drainage body is a magnetic part and further comprises an external magnetic part, the external magnetic part comprises a permanent magnet block and an iron plate, one surface of the permanent magnet block is connected with the iron plate, and the other surface of the permanent magnet block is provided with an inner concave part. The utility model can utilize the degradable wire which is automatically dissolved after a certain time, thereby meeting the discharge controllability requirement of the ureteral stent, and can break the degradable wire by utilizing the magnetic force when the degradable wire is not degraded, thereby releasing the discharge body in advance.

Description

Ureteral stent capable of controlling discharge time and free of surgical extraction
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of ureteral stents, in particular to the technical field of a ureteral stent which can control the discharge time and is free from surgical extraction.
[ background of the utility model ]
The ureter is connected with the renal pelvis and the bladder, is a pair of slender pipelines, is in an oblate column shape, has the average pipe diameter of 0.5-0.7 cm and the overall length of 25-35 cm (for adults), is positioned behind the peritoneum, and vertically descends along the front of the inner side of the psoas major to enter the pelvis. The ureteral stent has the advantages of relieving ureteral obstruction, expanding the ureter, preventing ureteral stenosis, facilitating stone discharge, promoting ureteral postoperative recovery and the like, and is widely used in hospitals.
With the wide development of minimally invasive operations such as ureteral soft ureteroscope, hard ureteroscope, percutaneous nephroscope, laparoscope and robot laparoscope in urinary surgery, the postoperative recovery speed of patients is faster and faster, so the requirements of the patients are higher and higher. However, the existing double J-tube must be removed through a secondary cystoscope operation after placement, which greatly increases the pain of the postoperative patient, especially for male patients, and also increases the medical cost of the patient. In order to solve the above technical problems, methods such as an absorbable stent and an in vitro indwelling method have been studied in the industry, but the effect is not ideal. The Chinese patent ZL201921377413.6 novel ureteral stent convenient to take out without operation solves the technical problem that the ureteral stent in the prior art must be taken out through cystoscope operation and cannot be discharged automatically in a line and ball combined mode. However, since the time of the discharge of the small ball is not controllable during urination and the discharge time is short, it is only suitable for patients who have a short time for placing the double J-tube.
[ Utility model ] content
The utility model aims to solve the problems in the prior art, provides a ureteral stent which can control the discharge time and is taken out without operation, and can meet the discharge controllability requirement of the ureteral stent by utilizing a degradable wire which is automatically dissolved after a certain time.
In order to achieve the purpose, the utility model provides a ureteral stent capable of controlling the drainage time and being taken out without operation, which comprises a ureteral stent, a silk thread and a drainage body, wherein two ends of the silk thread are respectively connected with the ureteral stent and the drainage body, and the ureteral stent further comprises a degradable line, wherein the drainage body is bound on the ureteral stent or the silk thread by the degradable line and is arranged close to the connection part of the ureteral stent and the silk thread.
Preferably, the ureteral stent comprises a stent body and a forward J-shaped tube, wherein the stent body is tubular, and the left end and the right end of the stent body are respectively connected with the silk thread and the forward J-shaped tube.
Preferably, one end of the bracket body, which is far away from the forward J-shaped pipe, is provided with a flared pipe or a reverse J-shaped pipe, and the silk thread is connected with the flared pipe or the reverse J-shaped pipe.
Preferably, the support body, the forward J-shaped pipe and the reverse J-shaped pipe are respectively provided with a plurality of drainage holes.
Preferably, the length of the wire is greater than the length of the human urethra.
Preferably, the degradable thread is made of one or a mixture of two of L-lactide/epsilon-caprolactone copolymer and glycolide/epsilon-caprolactone copolymer.
Preferably, the length of the degradable thread is 2-3 cm, the thickness of the degradable thread is 5-zero, and the thickness of the degradable thread is about the thickness of the hair.
Preferably, the surface of the discharger is smooth and is provided with a through hole, the silk thread and the degradable line both penetrate through the through hole to bind the discharger, and the aperture of the through hole can be used for a loach guide wire or a zebra guide wire to penetrate through.
Preferably, the discharging body is a magnetic part and further comprises an outer magnetic part, the outer magnetic part comprises a permanent magnet block and an iron plate, one surface of the permanent magnet block is connected with the iron plate, and the other surface of the permanent magnet block is provided with an inner concave part.
Preferably, the discharge body is a non-magnetic member.
The utility model has the beneficial effects that:
1) through the arrangement of the degradable line binding discharger, the discharger can be limited near the connection part of the ureteral stent and the silk thread when not dissolved, the discharger is prevented from being discharged out of the body in advance under the action of gravity and urine impact force, the discharger can be automatically dissolved after a certain time, and the position limitation on the discharger is cancelled, so that medical personnel or patients can take out the whole ureteral stent by using the discharger discharged out of the body along with urine in cooperation with the silk thread, the whole ureteral stent is taken out, the overall structure is simple, the cost is low, the operation is convenient and fast, and the disease pain and the economic burden of the patients caused by the secondary cystoscope operation are effectively avoided;
2) doctors can select degradable lines made of different materials according to the requirements, and the degradation time of the degradable lines is controlled, so that the controllability requirement of ureteral stent discharging is met;
3) the length of the degradable thread is 2-3 cm, the thickness is 5 zero, the thickness of the degradable thread is about the thickness of hair, the produced degradation products in the bladder are few, the degradable thread can be easily discharged along with urine, and the degradable thread has no great discomfort to a human body;
4) through adopting the magnetic part as the eduction gear to the magnetic force of piece is inhaled to cooperation outer magnetism adsorbs, can utilize magnetic force to break the degradable line when the degradable line is not degraded, thereby further improves ureter support exhaust controllability.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a front view of the first embodiment when the degradable thread is not degraded;
FIG. 2 is a front view of the first embodiment when the degradable thread has been degraded;
FIG. 3 is a front view of the second embodiment when the degradable thread has been degraded;
FIG. 4 is a front view of the third embodiment when the degradable thread has been degraded;
FIG. 5 is a view showing a state in which the excretory substance of the third embodiment is used when not excreted from the human body;
FIG. 6 is a view showing a state in which the discharging body of the third embodiment is used after it has been discharged from the human body;
fig. 7 is a front view of an external magnetic suction element of a ureteral stent of the present invention allowing control of the drainage time and free of surgical extraction.
In the figure: 1-ureteral stent, 11-stent body, 12-forward J-shaped tube, 13-flared tube, 14-reverse J-shaped tube, 15-drainage hole, 2-silk thread, 3-drainage body, 4-degradable thread, 5-external magnetic attraction piece, 51-permanent magnet block, 511-internal concave part, 52-iron plate and 6-ureter.
[ detailed description ] embodiments
The first embodiment is as follows:
referring to fig. 1, 2 and 7, the ureteral stent capable of controlling the drainage time and being taken out without operation comprises a ureteral stent 1, a silk thread 2 and a drainage body 3, wherein two ends of the silk thread 2 are respectively connected with the ureteral stent 1 and the drainage body 3, the ureteral stent further comprises a degradable thread 4, and the degradable thread 4 binds the drainage body 3 on the ureteral stent 1 or the silk thread 2 and is arranged close to the connection part of the ureteral stent 1 and the silk thread 2. Wherein, the degradable thread 4 can prevent the discharging body 3 from being discharged out of the body too early under the action of gravity and the impact force of urine when the discharging body discharges urine when not degraded. When the degradable thread 4 is degraded, the discharging body 3 can be automatically discharged out of the body under the action of gravity and the impact force of urine. At this time, medical staff or a patient can directly pull out the ureteral stent 1 connected with the silk thread 2 out of the body by pulling the discharger 3, so that a secondary cystoscope operation is avoided.
The ureteral stent 1 comprises a stent body 11 and a forward J-shaped tube 12, wherein the stent body 11 is tubular, and the left end and the right end of the stent body are respectively connected with the silk thread 2 and the forward J-shaped tube 12. This structure is suitable for placing the forward J-shaped tube 12 from the top to the bottom in percutaneous nephroscope operation.
And a plurality of drainage holes 15 are formed in the bracket body 11 and the forward J-shaped pipe 12. The drainage hole 15 can effectively improve the drainage dredging effect of the ureteral stent 1.
The length of the silk thread 2 is larger than that of the urethra of the human body, so that the requirement of discharging the discharging body 3 out of the body is met.
The degradable thread 4 is made of a material with a slow degradation speed (L-lactide/epsilon-caprolactone copolymer) or a material with a fast degradation speed (glycolide/epsilon-caprolactone copolymer). In addition, the degradable thread 4 can also be prepared by mixing the above two materials, or by using other degradable materials. Wherein, the physician can select the degradable thread 4 with suitable degradation time according to the needs, so that the ureteral stent 1 can be taken out according to the approximate scheduled time of the physician, thereby improving the controllability of the operation.
The length of the degradable thread 4 is 2-3 cm, the thickness is 5-zero, the thickness of the degradable thread is about the thickness of hair, the produced degradation products in the bladder are few, the degradation products are easy to discharge along with urine, and the human body does not have great discomfort.
The surface of the discharger 3 is smooth and provided with a through hole, the silk thread 2 and the degradable thread 4 penetrate through the through hole to bind the discharger 3, and the aperture of the through hole can be used for a loach guide wire (the model is 038/150) or a zebra guide wire to penetrate through. The discharge body 3 may have various shapes, and is preferably a spherical shape having no noticeable foreign body sensation in the body. In addition, the through holes can not only realize the binding connection between the discharger 3 and the silk thread 2 and the degradable thread 4, but also enable the discharger 3 to pass through the guide wire along with the ureteral stent 1, the silk thread 2 and the degradable thread 4 and be pushed by the push rod to be placed in the renal pelvis, the ureteral 6 and the bladder in the operation process, thereby effectively improving the convenience of operation.
The discharging body 3 is a magnetic part and further comprises an outer magnetic part 5, the outer magnetic part 5 comprises a permanent magnet block 51 and an iron plate 52, one surface of the permanent magnet block 51 is connected with the iron plate 52, and the other surface of the permanent magnet block is provided with an inner concave part 511. When the ureteral stent 1 needs to be taken out, the external magnetic suction piece 5 can be placed on the outer side of the skin at the perineum or pubic bone, mutually attracts the discharger 3 through human tissue, and enables the discharger 3 to be released from the degradable wire 4 in advance in the moving process, so that the controllability of the operation is further improved. The iron plate 52 can weaken the magnetic attraction on the back side (i.e. the side close to the iron plate 52) of the permanent magnet block 51 and strengthen the magnetic attraction on the front side (i.e. the side far from the iron plate 52) of the permanent magnet block 51. The concave portion 511 is a concave structure having a circular arc surface or a hemispherical surface. The concave portion 511 can make the magnetic force lines more concentrated and make the magnetic force lines attractable further, thereby realizing the remote adsorption of the discharger 3.
Secondly, if the degradable thread 4 can be sufficiently degraded according to a predetermined time or the operation has low requirements for the time for removing the ureteral stent, a non-magnetic member may be used as the drainage body 3. The material of the discharging body 3 may be metal, glass or other materials, and the density is heavier than that of water, and preferably, austenitic stainless steel (304 stainless steel) having little influence on the human body.
Example two:
referring to fig. 3, a flared tube 13 is disposed at an end of the stent body 11 away from the forward J-shaped tube 12, and the silk thread 2 is connected to the flared tube 13. The flared tube 13 can be clamped at the bladder, so as to reduce the stimulation to the bladder wall, avoid the phenomena of frequent micturition, urgent micturition, hematuria and the like of a patient, and simultaneously prevent the problem that the lower end of the bracket body 11 retracts and moves upwards due to the reasons of reflux and peristalsis of the ureter 6 or bladder contraction and the like.
The other steps are the same as those of the first embodiment.
Example three:
referring to fig. 4, a reverse J-shaped tube 14 is arranged at one end of the stent body 11 away from the forward J-shaped tube 12, and the silk thread 2 is connected with the reverse J-shaped tube 14. The reverse J-shaped tube 14 can be locked at the bladder, and simultaneously, the problem that the lower end of the bracket body 11 retracts and moves upwards due to the reflux and peristalsis of the ureter 6, the contraction of the bladder and the like is prevented.
The reverse J-shaped pipe 14 is also provided with a plurality of drainage holes 15.
The other steps are the same as those of the first embodiment.
Referring to fig. 5, during installation, a guidewire is first placed into the ureter 6. Then, the silk thread 2 is passed through the through-hole and the displacer 3 is bound, and the displacer 3 is bound to the silk thread 2 at or near the end of the reversed J-tube 14 by the degradable thread 4. Subsequently, the ureteral stent 1 and the drainage body 3 are simultaneously passed through the outside of the guide wire and then slowly advanced along the guide wire, so that the forward J-tube 12 is placed at the renal pelvis of the patient, the end of the stent body 11 is placed at the bladder opening of the patient, and the reverse J-tube 14, the silk thread 2, the drainage body 3 and the degradable thread 4 are placed inside the bladder.
Referring to fig. 5 and 6, the undegraded degradable thread 4 can prevent the discharging body 3 from being prematurely discharged out of the body by gravity and impact force of urine during urination. When the degradable thread 4 is degraded, the discharging body 3 is discharged out of the body under the impact force of gravity and urine. At this time, medical staff or a patient can directly pull out the ureteral stent 1 connected with the silk thread 2 out of the body by pulling the discharger 3, so that a secondary cystoscope operation is avoided. If the degradable thread 4 is not sufficiently degraded according to the predetermined time, the external magnetic attraction piece 5 can be placed on the outer side of the skin at the perineum or pubis and mutually attracted with the discharger 3 through human tissue, so that the discharger 3 is released from being fixed with the degradable thread 4 in advance in the moving process.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (10)

1. A ureteral stent capable of controlling the drainage time and being taken out without operation comprises a ureteral stent (1), silk threads (2) and a drainage body (3), wherein two ends of the silk threads (2) are respectively connected with the ureteral stent (1) and the drainage body (3), and the ureteral stent is characterized in that: the ureteral stent also comprises a degradable line (4), wherein the drainage body (3) is bound on the ureteral stent (1) or the silk thread (2) by the degradable line (4) and is arranged close to the connection part of the ureteral stent (1) and the silk thread (2).
2. The ureteral stent capable of controlling drainage time and being removed without operation according to claim 1, wherein: the ureteral stent (1) comprises a stent body (11) and a forward J-shaped tube (12), wherein the stent body (11) is tubular, and the left end and the right end of the stent body are respectively connected with the silk thread (2) and the forward J-shaped tube (12).
3. The ureteral stent capable of controlling drainage time and being removed without operation according to claim 2, wherein: one end, far away from the forward J-shaped pipe (12), of the support body (11) is provided with a flared pipe (13) or a reverse J-shaped pipe (14), and the silk thread (2) is connected with the flared pipe (13) or the reverse J-shaped pipe (14).
4. A ureteral stent with controlled drainage time and surgical removal-free according to claim 3, wherein: the support body (11), the forward J-shaped pipe (12) and the reverse J-shaped pipe (14) are all provided with a plurality of drainage holes (15).
5. The ureteral stent capable of controlling drainage time and being removed without operation according to claim 1, wherein: the length of the silk thread (2) is larger than that of the urethra of the human body.
6. The ureteral stent capable of controlling drainage time and being removed without operation according to claim 1, wherein: the degradable thread (4) is prepared from one or a mixture of two of L-lactide/epsilon-caprolactone copolymer and glycolide/epsilon-caprolactone copolymer.
7. The ureteral stent capable of controlling drainage time and eliminating surgical extraction according to claim 6, wherein: the length of the degradable line (4) is 2-3 cm, and the thickness is 5 zero.
8. A ureteral stent with controllable drainage time and no surgical removal according to any of claims 1 to 7, wherein: the surface of the discharging body (3) is smooth and is provided with a through hole, the silk thread (2) and the degradable thread (4) penetrate through the through hole to bind the discharging body (3), and the aperture of the through hole can be used for a loach guide wire or a zebra guide wire to penetrate through.
9. The ureteral stent capable of controlling drainage time and eliminating surgical extraction according to claim 8, wherein: the discharging body (3) is a magnetic part and further comprises an outer magnetic part (5), the outer magnetic part (5) comprises a permanent magnet block (51) and an iron plate (52), one surface of the permanent magnet block (51) is connected with the iron plate (52), and the other surface of the permanent magnet block is provided with an inner concave part (511).
10. The ureteral stent capable of controlling drainage time and eliminating surgical extraction according to claim 8, wherein: the discharge body (3) is a non-magnetic member.
CN202120803436.XU 2021-04-20 2021-04-20 Ureteral stent capable of controlling discharge time and free of surgical extraction Active CN216418047U (en)

Priority Applications (1)

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CN202120803436.XU CN216418047U (en) 2021-04-20 2021-04-20 Ureteral stent capable of controlling discharge time and free of surgical extraction

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Application Number Priority Date Filing Date Title
CN202120803436.XU CN216418047U (en) 2021-04-20 2021-04-20 Ureteral stent capable of controlling discharge time and free of surgical extraction

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Effective date of registration: 20231109

Address after: Building 2, No. 35 North Street, Gangqu District, Pinghu City, Jiaxing City, Zhejiang Province, 314201

Patentee after: Jiaxing Haohua Medical Device Technology Co.,Ltd.

Address before: 314200 No.11, Liya lane, Zhapu Town, Pinghu City, Jiaxing City, Zhejiang Province

Patentee before: Jin Jiahao

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Effective date of registration: 20240416

Address after: Room 601-1, Building 37, Hangzhou Bay New Economic Park, Jiaxing Port District, Zhejiang Province, China, 314201

Patentee after: Zhejiang Jiaxing Xinchuangrei Technology Co.,Ltd.

Country or region after: China

Address before: Building 2, No. 35 North Street, Gangqu District, Pinghu City, Jiaxing City, Zhejiang Province, 314201

Patentee before: Jiaxing Haohua Medical Device Technology Co.,Ltd.

Country or region before: China

TR01 Transfer of patent right