CN211270665U

CN211270665U - Ureter soft lens sheath inner core

Info

Publication number: CN211270665U
Application number: CN201922155730.XU
Authority: CN
Inventors: 汤庆峰; 黄晓科; 刘承万
Original assignee: Chengdu Xindu Peoples Hospital
Current assignee: Chengdu Xindu Peoples Hospital
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-08-18
Anticipated expiration: 2029-12-05

Abstract

The utility model provides a flexible ureteroscope sheath inner core relates to medical instrument technical field, it includes the transparent core, the front end of core is provided with the toper portion, be provided with guide wire passageway and the fibre channel that runs through along the axial in the core, the core has cup jointed the nozzle in neighbouring toper portion department rotation, be provided with in the nozzle and hold the chamber, be provided with the drain passageway that lets in the chamber on the core, the front end of nozzle is that the emission form distributes and has a plurality ofly and holds the jet orifice that the chamber communicates, the middle part of nozzle is provided with a plurality ofly along the circumference around its axis and to the rotatory spiral hole of rear end. Solves the problems that the ureter soft endoscope sheath in the prior art can not effectively monitor the implantation position and can not thoroughly discharge the broken stones when being implanted into the ureter.

Description

Ureter soft lens sheath inner core

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a flexible ureteroscope sheath inner core.

Background

Urinary calculus is a common disease and frequently encountered disease in the clinical aspect of urinary surgery, and with the development of minimally invasive technology, the ureter soft-lens lithotripsy is called as an important means for treating urinary calculus. The lithotripsy under soft ureteroscope is mainly characterized by that the soft ureteroscope is passed through urethra and fed into ureter, renal pelvis and renal calyx, and the soft ureteroscope can be used for breaking stone, and after the stone is broken, the stone can be sucked into the exterior of body by means of negative pressure. During operation, a flexible ureteroscope sheath is generally required to be placed as an operation channel, the flexible ureteroscope sheath can facilitate the flexible ureteroscope to enter a kidney, the flexible ureteroscope and the wall of a ureter can be isolated, and the damage of the flexible ureteroscope activity and other operations to the wall of the ureter is reduced.

Generally, a flexible ureteroscope sheath comprises an outer sheath and an inner core with a long cone shape inserted into the outer sheath, and the conventional use method is to firstly use a flexible ureteroscope to place a guide wire in a ureter at the affected side, and blindly push the flexible ureteroscope sheath to the renal pelvis junction of the ureter by the hand feeling and experience under the guide of the guide wire, or perform the monitoring under the C-arm X-ray. If the patient pushes the patient blindly, the ureter is easily damaged and is easily placed in an improper position, and radiation injury is accompanied under X-rays. The calculus broken in the existing ureter soft lens operation is usually naturally discharged out of the body of a patient, so that the calculus is easily discharged incompletely.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem among the prior art, the utility model provides a soft mirror sheath inner core of ureter has solved among the prior art the problem that can not effectively monitor when the soft mirror sheath of ureter is put into the ureter and put into the position and can not thoroughly discharge the rubble.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:

the utility model provides a ureter soft lens sheath inner core, it includes transparent core, the front end of core is provided with the toper portion, be provided with along the seal wire passageway and the fibre channel that the axial runs through in the core, the core rotates near toper portion and has cup jointed the nozzle, be provided with in the nozzle and hold the chamber, be provided with the drain passageway that lets in and hold the chamber on the core, the front end of nozzle is that the emission form distributes and has a plurality ofly and hold the jet orifice that the chamber communicates, the middle part of nozzle is provided with a plurality ofly along the circumference around its axis and to the rotatory spiral hole of rear end.

Furthermore, no less than three spiral holes are uniformly distributed in the middle of the nozzle along the circumference.

Further, the maximum outer diameter of the nozzle is equal to the maximum outer diameter of the core.

Furthermore, an annular groove is arranged on the rear end face of the nozzle, and an annular boss arranged on the core body is inserted in the annular groove. Through the cooperation of annular boss and ring channel, carry out the position to the rotary motion of nozzle and prescribe a limit to, make the nozzle rotate around the axis of core all the time, improve the controllability.

Furthermore, a first sealing ring is arranged on the inner side of the annular boss, and a second sealing ring is arranged between the inner hole surface of the front end of the nozzle and the outer cylindrical surface of the core body. The cavity is sealed through first sealing washer and second sealing washer, avoids holding the chamber in the perfusate leak outward.

Furthermore, the front end of the nozzle is a spherical surface, and the injection hole is communicated into the cavity along the radial direction of the spherical surface.

Further, one end of the nozzle, which is adjacent to the conical part, is provided with a retainer ring, and the retainer ring is detachably connected to the core body. The axial limiting of the nozzle is realized through the retainer ring, so that the nozzle is prevented from slipping out of the core body in the rotating process.

The utility model has the advantages that: when the flexible ureteroscope sheath is placed into a ureter, the guide wire channel is used for a guide wire to pass through, the optical fiber channel is used for a flexible ureteroscope to pass through, and the camera on the flexible ureteroscope can penetrate through the transparent core body in real time to acquire the position information of the flexible ureteroscope sheath, so that an operator can avoid damaging the ureter in the process of placing the flexible ureteroscope sheath and can place the flexible ureteroscope sheath in place easily.

Through set up the spiral hole on the nozzle, the perfusate that gets into in the appearance chamber produces the efflux from the spiral hole to the oblique rear of nozzle, the hydraulic torque that utilizes the efflux to produce makes the nozzle rotatory around its axis, rotatory nozzle makes also rotatory from jet orifice spun perfusate, and then produces the vortex in the rubble district, by garrulous calculus along with the vortex removes, more do benefit to discharge outside under the negative pressure effect, and can not store up internally, improve the discharge thoroughness of calculus, avoided needing to carry out the rubble operation to the patient repeatedly. The rotation of nozzle is through changing the structure of nozzle itself to with the help of the pressure of perfusate, so only need control to get into the hydraulic pressure that holds the perfusate in the chamber through leading the liquid passageway and can control the rotational speed of nozzle, need not to increase other mechanical structure again, simple structure, design benefit, effectual, easily control.

Drawings

Fig. 1 is a front view of the inner core of a ureter soft endoscope sheath.

Fig. 2 is a left side view of the inner core of the flexible ureteroscope sheath.

Fig. 3 is a sectional view taken along a-a in fig. 2.

Wherein, 1, the core body; 11. a tapered portion; 12. a guidewire channel; 13. a fiber channel; 14. a drainage channel; 15. an annular boss; 2. a nozzle; 21. a cavity; 22. an injection hole; 23. a helical bore; 3. a first seal ring; 4. a second seal ring; 5. and a retainer ring.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

As shown in fig. 1 to 3, the ureteroscope sheath core comprises a core body 1, a tapered part 11 is arranged at the front end of the core body 1, and a guide wire channel 12 and an optical fiber channel 13 which penetrate through the core body 1 along the axial direction are arranged. The core body 1 is rotatably sleeved with the nozzle 2 adjacent to the conical part 11, and the maximum outer diameter of the nozzle 2 is equal to that of the core body 1, namely, the outer cylindrical surface of the nozzle 2 is flush with the maximum diameter outer cylindrical surface of the core body 1.

The rear end face of the nozzle 2 is provided with an annular groove, and an annular boss 15 arranged on the core body 1 is inserted in the annular groove. The inner side of the annular boss 15 is provided with a first sealing ring 3, and a second sealing ring 4 is arranged between the inner hole surface at the front end of the nozzle 2 and the outer cylindrical surface of the core body 1. The end of the nozzle 2 adjacent the conical portion 11 is provided with a collar 5, the collar 5 being removably attached to the core 1.

A cavity 21 is arranged in the nozzle 2, a liquid guide channel 14 which is communicated with the cavity 21 is arranged on the core body 1, and the liquid guide channel 14 is arranged in parallel with the guide wire channel 12 and the optical fiber channel 13. The front end of the nozzle 2 is a spherical surface, a plurality of injection holes 22 communicated with the cavity 21 are arranged along the radial direction of the spherical surface, and the injection holes 22 are distributed as shown in fig. 2.

The middle part of the nozzle 2 is provided with a plurality of spiral holes 23 which rotate around the axis and the rear end along the circumference, and no less than three spiral holes 23 are evenly distributed along the circumference.

When the flexible ureteroscope operation is carried out, a flexible ureteroscope display system is opened, a guide wire is placed in a ureter, an inner core of a flexible ureteroscope sheath is used for replacing an original inner core in the prior art, a flexible ureteroscope is placed in an optical fiber channel 13, a flexible lens is placed to a conical part 11, the inner core is placed in the flexible ureteroscope sheath for fixation, the guide wire is reversely inserted into the conical part 11 from a guide wire channel 12, and then the flexible ureteroscope sheath is integrally and slowly placed in a ureter under the direct vision of the flexible ureteroscope.

After the calculus is broken, the liquid guide channel 14 is connected with the liquid filling device, the liquid filling device is opened, the filling liquid with certain pressure enters the cavity 21 along with the liquid guide channel 14 and is sprayed out from the spray hole 22 and the spiral hole 23, the liquid sprayed out from the spray hole 22 directly enters the calculus breaking area to wash out tissue walls, the nozzle is rotated around the axis by hydraulic torque generated by the liquid sprayed out from the spiral hole 23, the rotating nozzle enables the filling liquid sprayed out from the spray hole to also rotate, further eddy current is generated in the calculus breaking area, broken calculus moves along with the eddy current, then the eddy current-shaped liquid is led out by the negative pressure drainage device, and the calculus can be thoroughly cleaned along with the eddy current.

Claims

1. The utility model provides a soft mirror sheath inner core of ureter, its characterized in that, includes transparent core (1), the front end of core (1) is provided with toper portion (11), be provided with in core (1) along axial through's seal wire passageway (12) and fibre channel (13), core (1) is neighbouring toper portion (11) department rotates and has cup jointed nozzle (2), be provided with in nozzle (2) and hold chamber (21), be provided with on core (1) and let in hold drain channel (14) of chamber (21), the front end of nozzle (2) be the launch form distribute have a plurality ofly with hold the jet orifice (22) of chamber (21) intercommunication, the middle part of nozzle (2) is provided with a plurality ofly along the circumference around its axis and to rear end rotatory spiral hole (23).

2. The flexible ureteroscope sheath core according to claim 1, wherein not less than three spiral holes (23) are uniformly distributed in the middle of the nozzle (2) along the circumference.

3. The ureteroscope sheath core according to claim 1, wherein the maximum outer diameter of the nozzle (2) is equal to the maximum outer diameter of the core (1).

4. The ureteroscope sheath core according to claim 1, wherein the rear end face of the nozzle (2) is provided with an annular groove, and an annular boss (15) arranged on the core body (1) is inserted into the annular groove.

5. The flexible ureteroscope sheath core according to claim 4, characterized in that a first sealing ring (3) is arranged on the inner side of the annular boss (15), and a second sealing ring (4) is arranged between the inner hole surface of the front end of the nozzle (2) and the outer cylindrical surface of the core body (1).

6. The ureteroscope sheath core according to claim 1, wherein the front end of the nozzle (2) is spherical, and the injection hole (22) opens into the cavity (21) along the radial direction of the spherical surface.

7. The ureteroscope sheath core according to claim 1, wherein the end of the nozzle (2) adjacent to the tapered portion (11) is provided with a collar (5), and the collar (5) is detachably connected to the core (1).