CN210843208U

CN210843208U - Ureter guide sheath

Info

Publication number: CN210843208U
Application number: CN201921268896.6U
Authority: CN
Inventors: 刘家兴; 黄佳
Original assignee: Jingzhou Yihai Technology Co ltd
Current assignee: Jingzhou Yihai Technology Co ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-06-26
Anticipated expiration: 2029-08-06

Abstract

The utility model discloses a ureter guide sheath, including guide sheath pipe and expansion pipe, the one end of guide sheath pipe is connected with guide sheath main part pipe, a pot head that guide sheath main part pipe is close to guide sheath pipe is equipped with universal ring, guide sheath main part pipe is including the restriction the spacing portion of displacement around universal ring goes on, guide sheath main part pipe is kept away from guide sheath pipe's one end is fixed with the connecting piece, the connecting piece is kept away from the expander joint is installed to guide sheath main part pipe's one end, the expansion pipe passes in proper order guide sheath pipe, guide sheath main part pipe and connecting piece with the expander joint is connected. The utility model discloses a set up universal ring the place ahead of guide sheath main part pipe is compared in setting up universal ring between guide sheath main part pipe and connecting piece, accords with human mechanics more, and operation equilibrium is higher, more makes things convenient for doctor's operation, has significantly reduced the unbalanced risk of bringing of operation to effectively shortened the time of putting the pipe operation.

Description

Ureter guide sheath

Technical Field

The utility model relates to the technical field of medical equipment, in particular to ureter guide sheath.

Background

In urological endoscopic procedures, ureteral access sheaths are commonly used to assist the endoscope and other instruments in accessing the urinary tract in order to establish a surgical channel. The ureteral access sheath can dilate the ureter prior to introduction of endoscopes and other instruments and as a continuous access channel for its passage, and can protect the ureter during instrument exchanges, reducing the possibility of trauma. For example, a ureteral access sheath disclosed in the patent application No. 201821662253.5 solves the problem that the ureteral access sheath is not easy to adjust the angle, but the universal finger ring is disposed between the main tube of the access sheath and the access sheath fixing member, which causes inconvenience for the operation of the doctor, and is not compliant with the body mechanics, and may bring about a risk of operation due to imbalance of the operation, and the time of the catheterization operation is long.

Thus, the prior art has yet to be improved and enhanced.

SUMMERY OF THE UTILITY MODEL

In view of the deficiencies of the prior art, the utility model aims to provide a ureter guide sheath, structural design is reasonable, and the operation is balanced, more makes things convenient for doctor's operation, can also effectively shorten the time of putting the pipe operation.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a ureter guide sheath, includes guide sheath pipe and expansion pipe, the one end of guide sheath pipe is connected with guide sheath main part pipe, the pot head that guide sheath main part pipe is close to guide sheath pipe is equipped with universal ring, guide sheath main part pipe is including the restriction universal ring for guide sheath main part pipe carries out the spacing portion of front and back displacement, guide sheath main part pipe is kept away from the one end of guide sheath pipe is fixed with the connecting piece, the connecting piece is kept away from the expander joint is installed to the one end of guide sheath main part pipe, the expansion pipe passes in proper order guide sheath pipe, guide sheath main part pipe and connecting piece with the expander joint is connected.

Preferably, in the ureteral guide sheath, the guide sheath main body tube further includes a connecting portion, the connecting portion and the limiting portion are integrally formed, the connecting portion includes a connecting tube, the head end of the connecting tube is connected with the tail end of the limiting portion, a negative pressure drainage mouthpiece and a negative pressure control mouthpiece are connected to the side wall of the connecting tube, the negative pressure drainage mouthpiece and the negative pressure control mouthpiece are both communicated with the connecting tube, and a tube opening matched with the connecting piece is arranged at the tail end of the connecting tube.

Preferably, ureter guide sheath in, spacing portion includes the spacing pipeline of being connected with guide sheath pipe, the head of spacing pipeline is provided with first flange, the junction of spacing pipeline and connecting pipe forms a step, spacing pipeline includes straight section and expansion section, the one end of straight section with the one end of guide sheath pipe is connected, the one end of expansion section is connected to the other end of straight section, the other end of expansion section is connected the head end of connecting pipe, the internal diameter of expansion section is crescent by head end to end.

Preferably, in the ureter guide sheath, the universal finger ring comprises a pipe sleeve, the outer wall of the pipe sleeve is connected with a plurality of finger rings, and the pipe sleeve is sleeved on the limiting pipeline and is matched with the limiting pipeline in size.

Preferably, in the ureter guide sheath, the connecting piece include guide sheath lower cover and with guide sheath lower cover complex guide sheath upper cover, guide sheath lower cover includes first lid, first lid with the mouth of pipe interference fit that the end of connecting pipe set up, the end of first lid is provided with the second flange, the symmetry is provided with two archs on the lateral wall of flange, guide sheath upper cover includes the second lid, one side symmetry of second lid is provided with the lug, be provided with in the lug with protruding complex draw-in groove, the internal thread pipe is installed to the opposite side of second lid, first lid and second lid all are provided with the confession the through-hole that the expansion pipe passed through.

Preferably, in the ureteral access sheath, the connecting piece further comprises a sealing ring arranged between the lower cover of the access sheath and the upper cover of the access sheath.

Preferably, in the ureter guide sheath, the expander joint comprises a flat straight pipe, an external threaded pipe matched with the internal threaded pipe is arranged at the head end of the flat straight pipe, a joint is arranged at the other end of the flat straight pipe, and the expansion pipe penetrates through the external threaded pipe and is connected with the flat straight pipe.

Preferably, in the ureteral guide sheath, one end of the expansion tube, which is far away from the main tube of the guide sheath, is conical.

Compared with the prior art, the utility model provides a ureter guide sheath, including guide sheath pipe and expansion pipe, the one end of guide sheath pipe is connected with guide sheath main part pipe, a pot head that guide sheath main part pipe is close to guide sheath pipe is equipped with universal ring, guide sheath main part pipe is including the restriction universal ring for guide sheath main part pipe carries out the spacing portion of front and back displacement, guide sheath main part pipe is kept away from the one end of guide sheath pipe is fixed with the connecting piece, the connecting piece is kept away from the expander joint is installed to the one end of guide sheath main part pipe, the expansion pipe passes in proper order guide sheath pipe, guide sheath main part pipe and connecting piece with the expander joint is connected. The utility model discloses a set up universal ring the place ahead of guide sheath main part pipe is compared in setting up universal ring between guide sheath main part pipe and connecting piece, accords with human mechanics more, and operation equilibrium is higher, more makes things convenient for doctor's operation, has significantly reduced the unbalanced risk of bringing of operation to effectively shortened the time of putting the pipe operation.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the ureteral access sheath provided in the present invention.

Fig. 2 is an exploded view of a ureteral access sheath according to a preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of a preferred embodiment of the connecting member of the ureteral access sheath provided in the present invention.

Fig. 4 is a schematic structural view of a preferred embodiment of the dilator joint in the ureteral access sheath provided by the present invention.

Detailed Description

The utility model provides a ureter guide sheath, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the attached drawing and the embodiment of lifting the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "on," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

Please refer to fig. 1, which is a schematic structural diagram of a preferred embodiment of the ureteral guiding sheath provided by the present invention, including a guiding sheath tube 1 and an expanding tube 2, one end of the guiding sheath tube 1 is connected with a guiding sheath main body tube 3, one end of the guiding sheath main body tube 3 close to the guiding sheath tube 1 is sleeved with a universal finger ring 4, the guiding sheath main body tube 3 includes a limiting portion 31 for limiting the universal finger ring 4 to move back and forth relative to the guiding sheath main body tube 3, one end of the guiding sheath main body tube 3 far away from the guiding sheath tube 1 is fixed with a connecting member 5, one end of the connecting member 5 far away from the guiding sheath main body tube 3 is installed with an expander joint 6, and the expanding tube 2 sequentially passes through the guiding sheath tube 1, the guiding sheath main body tube 3 and the connecting member 5 and is connected with the expander joint 6.

Specifically, when the ureteral access sheath provided by the embodiment is used, the ureteral access sheath is firstly guided by the guide wire to enter the part of the human body needing to be guided or establishing a channel through the urethra, then the dilator is taken out, and the access sheath 1 is left in the body for the insertion of surgical instruments. If the stone is needed to be broken, the instrument performs laser stone breaking, then the broken stone is discharged through the negative pressure suction of the guide sheath, the guide sheath is not only used for ureteral calculus, but also used for establishing a channel, and can also be used for laser cutting tumor, and the broken stone is discharged through the negative pressure suction of the guide sheath. When needs carry out angular adjustment, hold guide sheath main part pipe 3, then utilize the finger to rotate universal ring 4 can realize the adjustment of arbitrary angle, makes things convenient for the doctor to operate, and the utility model discloses a set up universal ring 4 the place ahead of guide sheath main part pipe 3 is compared in setting up universal ring 4 between guide sheath main part pipe 3 and connecting piece 5, accords with human mechanics more, and operation balance nature is higher, more makes things convenient for doctor's operation, has significantly reduced the risk that the unbalanced operation brought to effectively shortened the time of putting the pipe operation.

In addition, the utility model discloses only need through a guide sheath main part pipe 3 can restrict the displacement around universal ring 4, require to the connection stationarity of each pipeline and connecting piece lower, and the part of directly utilizing guide sheath main part pipe 3 and guide sheath pipe 1 to be connected supplies universal ring 4 to cover establishes, need not to add a pipeline again at the end of guide sheath main part pipe 3 and supply universal ring 4 to cover establishes, can effectively reduce the length of ureter guide sheath under the same condition, can further increase the equilibrium of operation when saving cost; in addition, the joint of the main guide sheath tube 3 and the connecting piece 5 is not covered by the universal finger ring 4, so that the main guide sheath tube 3 and the connecting piece 5 can be separated more conveniently, and the ureteral guide sheath can be detached and assembled conveniently.

Further, referring to fig. 2, the main tube 3 of the guide sheath further includes a connecting portion 32, the connecting portion 32 and the limiting portion 31 are integrally formed, the connecting portion 32 includes a connecting tube 321, a head end of the connecting tube 321 is connected to a tail end of the limiting portion 31, a negative pressure drainage interface tube 322 and a negative pressure control interface tube 323 are connected to a side wall of the connecting tube 321, the negative pressure drainage interface tube 322 and the negative pressure control interface tube 323 are both communicated with the connecting tube 321, a tube opening matched with the connecting piece 5 is arranged at a tail end of the connecting tube 321, and the negative pressure drainage interface tube 322 and the negative pressure control interface tube 323 facilitate formation of a reverse torque force for rotating the universal ring.

Further, the limiting portion 31 includes a limiting pipe 311 connected to the guiding sheath pipe 1, a first flange 312 is disposed at a head of the limiting pipe 311, a step 313 is formed at a connection position of the limiting pipe 311 and the connecting pipe 321, the limiting pipe 311 includes a straight section 3111 and an expansion section 3112, one end of the straight section 3111 is connected to one end of the guiding sheath pipe 1, the other end of the straight section 3111 is connected to one end of the expansion section 3112, the other end of the expansion section 3112 is connected to a head end of the connecting pipe 321, and an inner diameter of the expansion section 3112 is gradually increased from the head end to the tail end.

Specifically, the first flange 312 and the step 313 can limit the universal finger ring 4 from moving left and right, so as to ensure that the universal finger ring 4 cannot move transversely; the straight section 3111 is used for connecting guide sheath pipe 1, the expansion section 3112 is used for expanding, makes things convenient for putting into of medical instrument, the little head end of expansion section 3112 with the pipe diameter adaptation of straight section 3111, the big head end of expansion section 3113 with the pipe diameter adaptation of connecting pipe 321.

In a further embodiment, the universal finger ring 4 includes a sleeve 41, the outer wall of the sleeve 41 is connected with a plurality of finger rings 42, the finger rings 42 are used for being sleeved by fingers of a doctor for operation, and the sleeve 41 is sleeved on the limiting pipeline 311 and is matched with the limiting pipeline 311 in size, so that the universal finger ring 4 can rotate relative to the guide sheath main body tube 3.

Preferably, the tube sleeve 41 comprises an upper tube sleeve and a lower tube sleeve which are connected by bolts, so that the universal finger ring 4 can be conveniently taken down from the main body tube 3 of the guide sheath, and the maintenance and replacement of the guide sheath of the ureter are convenient.

Referring to fig. 3, the connecting member 5 includes a lower guiding sheath cover 51 and an upper guiding sheath cover 52 engaged with the lower guiding sheath cover 51, the lower guiding sheath cover 51 includes a first cover body 511, the first cover body 511 is in interference fit with a pipe orifice provided at the end of the connecting pipe 321, a second flange 512 is provided at the end of the first cover body 511, two protrusions 513 are symmetrically provided on the side wall of the flange 512, the upper guiding sheath cover 52 includes a second cover body 521, a protrusion 522 is symmetrically provided at one side of the second cover body 521, a slot 523 engaged with the protrusion 513 is provided in the protrusion 522, an internal threaded pipe 524 is installed at the other side of the second cover body 521, and through holes for the expansion pipe 2 to pass through are provided in both the first cover body 511 and the second cover body 521.

Specifically, the connecting member 5 is used for connecting the main body tube 3 of the introducer sheath with the dilator joint 6, the first cover 511 is used for connecting the main body tube 3 of the introducer sheath, the second cover 521 is used for connecting the dilator joint 6, and the protrusion 513 is connected with the engaging groove 523 in a matching manner, so that the connecting member 5 can be a whole, and further the whole transportation and the drawing-off of the main body tube of the introducer sheath and the guide sheath tube are facilitated.

Preferably, the connecting member 5 further comprises a sealing ring 53 installed between the lower sheath cover 51 and the upper sheath cover 52, so as to ensure that the lower sheath cover 51 and the upper sheath cover 52 can be tightly fitted to ensure the connection of the pipe fittings.

Referring to fig. 4, the expander joint 6 includes a flat tube 61, an external threaded tube 62 matching with the internal threaded tube 524 is disposed at the head end of the flat tube 61, a joint 63 is disposed at the other end of the flat tube 61, the expander tube 2 passes through the external threaded tube 62 to be connected with the flat tube 61, the external threaded tube 62 is used for connecting with the internal threaded tube 524, the joint 63 is used for connecting with other devices, and the expander joint 6 can facilitate the introduction of medical devices.

Preferably, the end of the dilating tube 2 away from the main guiding sheath tube 3 is tapered to facilitate the entry of the ureteral guiding sheath into the urinary tract.

To sum up, the utility model provides a ureter guide sheath, including guide sheath pipe and expansion pipe, the one end of guide sheath pipe is connected with guide sheath main part pipe, a pot head that guide sheath main part pipe is close to guide sheath pipe is equipped with universal ring, guide sheath main part pipe is including the restriction universal ring for guide sheath main part pipe carries out the spacing portion of front and back displacement, guide sheath main part pipe is kept away from the one end of guide sheath pipe is fixed with the connecting piece, the connecting piece is kept away from the expander joint is installed to the one end of guide sheath main part pipe, the expansion pipe passes in proper order guide sheath pipe, guide sheath main part pipe and connecting piece with the expander articulate. The utility model discloses a set up universal ring the place ahead of guide sheath main part pipe is compared in setting up universal ring between guide sheath main part pipe and connecting piece, accords with human mechanics more, and operation equilibrium is higher, more makes things convenient for doctor's operation, has significantly reduced the unbalanced risk of bringing of operation to effectively shortened the time of putting the pipe operation.

It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.

Claims

1. The utility model provides a ureter guide sheath, its characterized in that, is including guide sheath pipe and expansion pipe, the one end of guide sheath pipe is connected with guide sheath main part pipe, a pot head that guide sheath main part pipe is close to guide sheath pipe is equipped with universal ring, guide sheath main part pipe is including the restriction universal ring for guide sheath main part pipe carries out the spacing portion of front and back displacement, guide sheath main part pipe is kept away from the one end of guide sheath pipe is fixed with the connecting piece, the connecting piece is kept away from the expander joint is installed to the one end of guide sheath main part pipe, the expansion pipe passes in proper order guide sheath pipe, guide sheath main part pipe and connecting piece with the expander joint is connected.

2. The ureteral access sheath according to claim 1, wherein the access sheath main tube further comprises a connecting portion, the connecting portion is integrally formed with the limiting portion, the connecting portion comprises a connecting tube, a head end of the connecting tube is connected with a tail end of the limiting portion, a negative pressure drainage mouthpiece and a negative pressure control mouthpiece are connected to a side wall of the connecting tube, the negative pressure drainage mouthpiece and the negative pressure control mouthpiece are both communicated with the connecting tube, and a nozzle matched with the connecting member is arranged at a tail end of the connecting tube.

3. The ureteral access sheath according to claim 2, wherein the limiting portion comprises a limiting pipe connected to the guiding sheath, the head of the limiting pipe is provided with a first flange, the connecting portion of the limiting pipe and the connecting pipe forms a step, the limiting pipe comprises a straight section and an expanding section, one end of the straight section is connected to one end of the guiding sheath, the other end of the straight section is connected to one end of the expanding section, the other end of the expanding section is connected to the head end of the connecting pipe, and the inner diameter of the expanding section gradually increases from the head end to the tail end.

4. The ureteral access sheath of claim 3, wherein the universal finger ring comprises a sleeve, wherein a plurality of finger rings are connected to the outer wall of the sleeve, and the sleeve is sleeved on the limiting pipe and is matched with the limiting pipe in size.

5. The ureteral access sheath according to claim 4, wherein the connecting member comprises an access sheath lower cover and an access sheath upper cover which is engaged with the access sheath lower cover, the access sheath lower cover comprises a first cover body, the first cover body is in interference fit with a pipe orifice which is arranged at the end of the connecting pipe, a second flange is arranged at the end of the first cover body, two protrusions are symmetrically arranged on the side wall of the flange, the access sheath upper cover comprises a second cover body, a protruding block is symmetrically arranged on one side of the second cover body, a clamping groove which is engaged with the protrusion is arranged in the protruding block, an internal threaded pipe is arranged on the other side of the second cover body, and through holes for the expansion pipe to pass through are arranged on the first cover body and the second cover body.

6. The ureteral access sheath of claim 5, wherein the connector further comprises a sealing ring mounted between the access sheath lower cover and the access sheath upper cover.

7. The ureteral access sheath of claim 6, wherein the dilator joint comprises a straight tube, wherein an external threaded tube is arranged at the head end of the straight tube to match the internal threaded tube, a joint is arranged at the other end of the straight tube, and the dilating tube passes through the external threaded tube to be connected with the straight tube.

8. The ureteral access sheath of claim 1, wherein an end of the dilating tube distal to the access sheath body tube is tapered.