CN219089518U

CN219089518U - Ureter guiding sheath

Info

Publication number: CN219089518U
Application number: CN202223078064.2U
Authority: CN
Inventors: 王飞龙
Original assignee: Zhuhai Shixin Endoscope Co ltd
Current assignee: Zhuhai Shixin Endoscope Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-05-30
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses a ureter guiding sheath, which comprises: the sheath tube seat is provided with an attraction cavity, the outer wall of the sheath tube seat is provided with a mounting groove, the mounting groove is communicated with the attraction cavity through an air passage, the sheath tube seat is also provided with an attraction port, and the attraction port is communicated with the attraction cavity; the pressure sensor is arranged in the mounting groove; the sheath tube is provided with a plurality of capillary holes on the tube wall, the capillary holes extend along the axial direction of the sheath tube, the peripheral wall of the sheath tube is provided with an annular groove, the capillary holes are communicated with the annular groove, the sheath tube is connected with a sheath tube seat, the lumen of the sheath tube is communicated with the suction cavity, and the annular groove is communicated with the air passage; the negative pressure suction machine is provided with a suction nozzle and a data interface, the data interface is connected with the pressure sensor, the suction nozzle is communicated with the suction nozzle, and the negative pressure suction machine automatically adjusts the negative pressure suction force of the pressure sensor according to the internal pressure of the kidney monitored by the pressure sensor so as to release pressure of the kidney and control the internal pressure of the kidney in a set range in real time.

Description

Ureter guiding sheath

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a ureter guiding sheath.

Background

In the process of intrarenal laser lithotripsy, water is required to be continuously injected into the kidney to flush out stone fragments, the flushed stone fragments are discharged from the ureter guiding sheath, and when water is injected, if the water injection speed is too high, the intrarenal pressure is easy to be caused to be high, and the kidney of a patient is damaged, so that the intrarenal pressure is required to be monitored, and the ureter guiding sheath is controlled to generate negative pressure to reduce the intrarenal pressure.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the ureter guiding sheath provided by the utility model can monitor the internal pressure of the kidney in real time so as to balance the internal pressure of the kidney and avoid excessive internal pressure of the kidney of a patient.

A ureteral introducer sheath according to an embodiment of the first aspect of the present utility model, comprises: the sheath tube seat is provided with an attraction cavity, the outer wall of the sheath tube seat is provided with a mounting groove, the mounting groove is communicated with the attraction cavity through an air passage, the sheath tube seat is also provided with an attraction port, and the attraction port is communicated with the attraction cavity; a pressure sensor installed in the installation groove; the sheath tube is provided with a plurality of capillary holes on the tube wall, the capillary holes extend along the axial direction of the sheath tube, the peripheral wall of the sheath tube is provided with an annular groove, the capillary holes are communicated with the annular groove, the sheath tube is connected with the sheath tube seat, the lumen of the sheath tube is communicated with the suction cavity, and the annular groove is communicated with the air passage; the negative pressure suction machine is provided with a suction nozzle and a data interface, wherein the data interface is connected with the pressure sensor, and the suction nozzle is communicated with the suction nozzle.

The ureteral guiding sheath provided by the embodiment of the utility model has at least the following beneficial effects: the sheath tube is sealed and adhered to the sheath tube seat by glue to ensure air tightness, when the internal pressure of the kidney is too high, water in the renal pelvis enters from the capillary holes, air in the capillary holes is compressed, the compressed air acts on the pressure sensor through the air passages, the pressure sensor senses the pressure and then transmits data to the negative pressure suction machine, the negative pressure suction machine adjusts the magnitude of negative pressure suction force according to the pressure, thereby realizing real-time monitoring and control of the internal pressure of the kidney, namely, the change of the air pressure at the position of the pressure sensor is detected by the pressure sensor, the pressure sensor converts a pressure signal into an electric signal to be transmitted to the negative pressure suction machine through a wire for corresponding treatment, the suction mouth of the negative pressure suction machine is communicated with the suction mouth, and the negative pressure suction machine automatically adjusts the magnitude of the negative pressure suction force of the pressure sensor according to the internal pressure of the kidney monitored by the pressure sensor so as to release the pressure of the kidney, thereby controlling the internal pressure of the kidney in a set range in real time, providing a safe and reliable internal pressure monitoring method for the internal pressure of the kidney, reducing the risk of monitoring and monitoring the internal pressure of the kidney and the dynamic monitoring and the surgical operation on the patient is improved, and the risk of the patient is reduced, and the risk of monitoring and the internal pressure monitoring method is improved.

According to some embodiments of the utility model, a jack is arranged on the sheath tube seat, the jack is communicated with the suction cavity, a baffle is arranged at the junction of the jack and the suction cavity and used for blocking the end part of the sheath tube, and the baffle is arranged to prevent the sheath tube from sliding into the sheath tube seat in the using process, so that the use is affected.

According to some embodiments of the utility model, the capillary bore, the annular groove, and the air passage form a pressure measuring channel.

According to some embodiments of the utility model, four capillary holes are arranged, and the four capillary holes are uniformly distributed around the circumference of the sheath tube, so that the influence on pressure judgment caused by blockage of one capillary hole is avoided.

According to some embodiments of the utility model, hydrophilic layers are coated on the inner side and the outer side of the sheath tube, so that the resistance of the sheath tube entering the urinary tract is reduced, and intubation is facilitated.

According to some embodiments of the utility model, the outer wall of the sheath is provided with graduations to facilitate viewing of the depth and position of the cannula.

According to some embodiments of the utility model, the sheath hub is provided with an opening communicating with the suction chamber, the opening being disposed obliquely.

According to some embodiments of the utility model, the device further comprises an expansion pipe, the expansion pipe sequentially penetrates through the sheath pipe seat and the sheath pipe, a connector is arranged at one end of the expansion pipe, a guide head is arranged at the other end of the expansion pipe, the guide head penetrates out of the other end of the sheath pipe, the connector is in buckling connection with the sheath pipe seat, and a through working channel is arranged on the expansion pipe.

According to some embodiments of the utility model, the connector comprises a stopper and an elastic clamping block, the stopper and the elastic clamping block are integrally formed, the stopper is used for abutting against the open end of the sheath tube base, and the elastic clamping block is used for hooking the convex edge of the open end of the sheath tube base.

According to some embodiments of the utility model, the outer circumferential wall of the dilation tube and the working channel are both coated with a second hydrophilic layer, the outer circumferential wall of the dilation tube being provided with a second scale.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a ureteral introducer sheath according to an embodiment of the present utility model;

fig. 2 is an exploded view of the ureteral introducer sheath removal negative pressure suction machine shown in fig. 1;

fig. 3 is a perspective view cross-sectional view of the ureter introducer sheath removal negative pressure suction machine shown in fig. 1;

FIG. 4 is an enlarged view of FIG. 3A;

fig. 5 is an exploded view in perspective and cross-section of the ureteral introducer sheath removal negative pressure suction machine shown in fig. 1;

FIG. 6 is a schematic view of the structure of the open portion of the sheath hub;

fig. 7 is a perspective semi-sectional view of a dilation tube inserted into a ureter guide sheath;

fig. 8 is a perspective semi-sectional view of the stent of fig. 7 taken off the catheter hub.

Sheath tube holder 100, suction chamber 110, mounting groove 120, air channel 130, suction port 140, jack 150, baffle 160, and opening 170;

pressure sensor 200, sheath 300, capillary 310, annular groove 320;

a negative pressure suction machine 400, a suction nozzle 410 and a data interface 420;

expansion tube 500, connector 510, stop 511, and elastic clamp block 512.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a plurality means one or more, and a plurality means two or more, and it is understood that greater than, less than, exceeding, etc. does not include the present number, and it is understood that greater than, less than, within, etc. include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 to 8, a ureteral introducer sheath, comprising: the sheath tube holder 100 is provided with a suction cavity 110, the outer wall of the sheath tube holder 100 is provided with a mounting groove 120, the mounting groove 120 is communicated with the suction cavity 110 through an air passage 130, the sheath tube holder 100 is also provided with a suction port 140, and the suction port 140 is communicated with the suction cavity 110; a pressure sensor 200 installed in the installation groove 120; the sheath 300 is provided with a plurality of capillary holes 310 on the pipe wall, the capillary holes 310 extend along the axial direction of the sheath 300, the peripheral wall of the sheath 300 is provided with annular grooves 320, the capillary holes 310 are communicated with the annular grooves 320, the sheath 300 is connected with the sheath holder 100, the pipe cavity of the sheath 300 is communicated with the suction cavity 110, and the annular grooves 320 are communicated with the air passage 130; the negative pressure suction machine 400 is provided with a suction nozzle 410 and a data interface 420, wherein the data interface 420 is connected with the pressure sensor 200, and the suction nozzle 410 is communicated with the suction port 140.

The sheath 300 is sealed and bonded to the sheath holder 100 by using glue, that is, the sheath 300 is inserted into the insertion hole 150, and the sheath 300 and the insertion hole 150 are bonded by using glue, so that air tightness is ensured. Before use, in order to ensure the pressure measurement accuracy, the pressure sensor 200 needs to be calibrated by zeroing, in the use process, the sheath tube base 100 is arranged outside the human body, the sheath tube 300 enters the interior of the human renal pelvis, and at this time, the human renal pelvis channel, the capillary holes 310, the air channel 130 and the pressure sensor 200 are communicated. In the use process, water is injected into the kidney of a human body, the internal pressure of the renal pelvis is gradually increased, when the internal pressure of the kidney is too high, capillary holes 310 at the rear end of sheath 300 are submerged, water in the renal pelvis enters from the capillary holes 310, air in the capillary holes 310 is compressed, the compressed air acts on pressure sensor 200 through air passages 130, after the pressure sensor 200 senses the pressure, data are transmitted to negative pressure aspirator 400, the negative pressure aspirator 400 adjusts the magnitude of negative pressure attractive force according to the pressure, and therefore real-time monitoring and control of the internal pressure of the kidney are achieved, namely, the pressure change of the position where pressure sensor 200 is located is detected by pressure sensor 200, pressure signals are converted into electric signals by pressure sensor 200 and transmitted to negative pressure aspirator 400 through a conducting wire to be correspondingly processed, suction mouth 410 of negative pressure aspirator 400 is communicated with suction port 140 through a suction connecting pipe, and negative pressure aspirator 400 automatically adjusts the magnitude of negative pressure attractive force of pressure aspirator 200 according to the magnitude of the internal pressure of the kidney monitored by pressure sensor 200 so as to release the pressure of the kidney. Meanwhile, when the intra-renal pressure is detected to be low, the negative pressure suction machine 400 will decrease the operation power, so that the suction amount of the suction nozzle 410 of the negative pressure suction machine 400 is reduced, and in the case of maintaining the intra-renal water injection unchanged, the intra-renal pressure will gradually increase to return to the set level. The present embodiment controls the intra-renal pressure within a set range in real time, provides a safe and reliable intra-renal pressure monitoring means for intra-renal surgery, reduces the risk of injury to patients in the surgical process, provides a dynamic intra-renal pressure monitoring and adjusting method for medical staff, reduces the difficulty of intra-renal surgery, and improves the success rate of surgery, and it is understood that the pressure sensor 200 is further electrically connected with a display, the display is used to display a pressure value, the negative pressure suction machine 400 is a common negative pressure suction machine 400, and a microcomputer or a processor and other host machines capable of processing pressure signals are arranged inside the negative pressure suction machine 400.

In some embodiments, the sheath tube holder 100 is provided with a jack 150, the jack 150 is communicated with the suction cavity 110, a baffle 160 is disposed at the junction of the jack 150 and the suction cavity 110, the baffle 160 is used for blocking the end of the sheath tube 300, and the disposed baffle 160 prevents the sheath tube 300 from sliding into the sheath tube holder 100 during use, so as to affect use.

In some embodiments, capillary holes 310, annular grooves 320, and air channels 130 form a pressure measuring channel.

In some embodiments, four capillaries 310 are provided, and the four capillaries 310 are evenly distributed around the circumference of the sheath 300, so as to avoid blocking one of the capillaries 310 and affecting pressure determination.

In some embodiments, both the inside and outside of sheath 300 are coated with a hydrophilic layer, reducing the resistance of sheath 300 to entry into the urinary tract, facilitating intubation.

In some embodiments, the outer wall of the sheath 300 is provided with graduations to facilitate viewing of the depth and location of the cannula.

In some embodiments, the sheath holder 100 is provided with an opening 170, the opening 170 communicates with the suction cavity 110, and the opening 170 is obliquely arranged, it is understood that the opening 170 can be more convenient for installing the expansion tube 500, and plays a role of guiding the insertion of the expansion tube 500, and can also be used for abutting against the expansion tube 500.

In some embodiments, the device further comprises an expansion tube 500, the expansion tube 500 sequentially penetrates through the sheath tube holder 100 and the sheath tube 300, one end of the expansion tube 500 is provided with a connector 510, the other end of the expansion tube 500 is provided with a guide head, the guide head penetrates out of the other end of the sheath tube 300, the connector 510 is in buckling connection with the sheath tube holder 100, and the expansion tube 500 is provided with a through working channel. It should be noted that the front end of the expansion tube 500 is tapered, that is, the guide head is tapered, so that the expansion tube can play a role in expanding a ureter during the process of inserting the ureter, and the working channel of the expansion tube 500 can be inserted with a guide wire.

In some embodiments, the connector 510 includes a stopper 511 and an elastic block 512, the stopper 511 and the elastic block 512 are integrally formed, the stopper 511 is used for abutting against the open end of the sheath tube holder 100, and the elastic block 512 is used for hooking the flange of the open end of the sheath tube holder 100.

In some embodiments, the outer peripheral wall of the dilation tube 500 and the working channel are both coated with a second hydrophilic layer, and the outer peripheral wall of the dilation tube 500 is provided with a second scale.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. A ureteral introducer sheath, comprising:

the sheath tube seat is provided with an attraction cavity, the outer wall of the sheath tube seat is provided with a mounting groove, the mounting groove is communicated with the attraction cavity through an air passage, the sheath tube seat is also provided with an attraction port, and the attraction port is communicated with the attraction cavity;

a pressure sensor installed in the installation groove;

the sheath tube is provided with a plurality of capillary holes, the capillary holes extend along the axial direction of the sheath tube and penetrate through the tube wall, an annular groove is formed in the peripheral wall of one end of the sheath tube, the capillary holes are communicated with the annular groove, the sheath tube is connected with the sheath tube seat, the lumen of the sheath tube is communicated with the suction cavity, and the annular groove is communicated with the air passage;

the negative pressure suction machine is provided with a suction nozzle and a data interface, wherein the data interface is connected with the pressure sensor, and the suction nozzle is communicated with the suction nozzle.

2. The ureteral introducer sheath according to claim 1, characterized in that: the sheath tube seat is provided with a jack, the jack is communicated with the suction cavity, a baffle is arranged at the junction of the jack and the suction cavity, one end of the sheath tube is installed in the jack, and the baffle is used for blocking the end part of one end of the sheath tube.

3. The ureteral introducer sheath according to claim 2, characterized in that: the capillary holes, the annular grooves and the air passages form a pressure measuring channel.

4. The ureteral introducer sheath according to claim 1, characterized in that: the capillary holes are formed in four, and the four capillary holes are uniformly distributed around the circumference of the sheath tube.

5. The ureteral introducer sheath according to claim 1, characterized in that: the inner wall and the outer peripheral wall of the sheath tube are both coated with a first hydrophilic layer.

6. The ureteral introducer sheath according to claim 1, characterized in that: the outer peripheral wall of the sheath tube is provided with a first scale.

7. The ureteral introducer sheath according to claim 1, characterized in that: the sheath tube seat is provided with an opening part, the opening part is communicated with the suction cavity, and the opening part is obliquely arranged.

8. The ureteral introducer sheath according to any of claims 1 to 7, characterized in that: still include the extension tube, the extension tube passes in proper order sheath tube socket with the sheath tube, the one end of extension tube is provided with the connector, the other end of extension tube is provided with the guide head, the guide head wears out the other end of sheath tube, the connector with sheath tube socket buckle is connected, the extension tube is provided with the working channel who link up.

9. The ureteral introducer sheath according to claim 8, characterized in that: the connector comprises a stop block and an elastic clamping block, the stop block is integrally formed with the elastic clamping block, the stop block is used for being abutted to the opening end of the sheath tube base, and the elastic clamping block is used for hooking the convex edge of the opening end of the sheath tube base.

10. The ureteral introducer sheath according to claim 8, characterized in that: the outer peripheral wall of the expansion pipe and the working channel are both coated with a second hydrophilic layer, and the outer peripheral wall of the expansion pipe is provided with second scales.